964 results on '"Gurkan, G."'
Search Results
252. Laparoscopic sacral colpopexy with polyester fiber suture: Ozerkan modification.
- Author
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Ozerkan K, Orhan A, Kasapoglu I, Ata B, and Uncu G
- Subjects
- Female, Gynecologic Surgical Procedures adverse effects, Humans, Polyesters, Quality of Life, Surgical Mesh adverse effects, Sutures adverse effects, Treatment Outcome, Laparoscopy, Pelvic Organ Prolapse surgery, Uterine Prolapse surgery
- Abstract
Introduction and Hypothesis: Mesh-related problems are significant complications of laparoscopic sacral colpopexy. The conventional technique precludes performing laparoscopic sacral colpopexy without using a mesh. We describe the Ozerkan modification for laparoscopic sacral colpopexy using a polyester fiber suture instead of a standard mesh and report 1-year objective and subjective outcomes., Methods: Women diagnosed with stage ≥ 2 vaginal vault prolapse were prospectively recruited for the Ozerkan modification between 2015 and 2017. The primary outcome was the anatomic success of the repair, defined by objective parameters using the pelvic organ prolapse quantification system (stage 0 or 1). Secondary outcomes were subjective outcomes assessed with the quality of life scores., Results: Twenty-two women underwent the Ozerkan modified laparoscopic sacrocolpopexy. Mean operation time was 85.6 min. Mean estimated blood loss was 71 ml. One patient was lost during the clinical follow-up in the outpatient clinic up to 1 year. Nineteen of 21 patients had stage 0 or 1 prolapse at the end of 1 year. Two patients were not satisfied with their pelvic floor after 1 year. Both the objective and subjective cure rates were 90.4%. There were no bladder or bowel complications during the peri- or postoperative period., Conclusions: The new modification of laparoscopic sacral colpopexy seems a feasible and safe option to avoid mesh complications in the treatment of vaginal vault prolapse.
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- 2020
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253. COVID-19 pandemic: changes in cancer admissions.
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Guven DC, Aktas BY, Aksun MS, Ucgul E, Sahin TK, Yildirim HC, Guner G, Kertmen N, Dizdar O, Kilickap S, Aksoy S, Yalcin S, Turker A, Uckun FM, and Arik Z
- Abstract
Background: COVID-19 pandemic could create a collateral damage to cancer care denoting disruptions in care due to a significant burden on healthcare and resource allocations. Herein, we evaluate the early changes in the inpatient and outpatient oncology clinics to take a snapshot of this collateral damage at Hacettepe University Cancer Institute., Methods: Patients applying the outpatient clinic and outpatient palliative care (OPC) clinic for the first time and patients admitted to inpatient wards in the first 30 days after the first case of COVID-19 in Turkey were evaluated. These data were compared with data from the same time frame in the previous 3 years., Results: The mean number of daily new patient applications to the outpatient clinic (9.87±3.87 vs 6.43±4.03, p<0.001) and OPC clinic (3.87±1.49 vs 1.13±1.46, p<0.001) was significantly reduced compared with the previous years. While the number of inpatient admissions was similar for a month frame, the median duration of hospitalisation was significantly reduced. The frequency of hospitalisations for chemotherapy was higher than in previous years (p<0.001). By comparison, the rate of hospitalisations for palliative care (p=0.028) or elective interventional procedures (p=0.001) was significantly reduced., Conclusion: In our experience, almost all domains of care were affected during the pandemic other than patients' systemic treatments. There were significant drops in the numbers of newly diagnosed patients, patients having interventional procedures and palliative care services, and these problems should be the focus points for the risk mitigation efforts for prevention of care disruptions., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2020. No commercial re-use. See rights and permissions. Published by BMJ.)
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- 2020
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254. Melatonin and vitamin E alleviate homocysteine-induced oxidative injury and apoptosis in endothelial cells.
- Author
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Aykutoglu G, Tartik M, Darendelioglu E, Ayna A, and Baydas G
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- Caspases genetics, Caspases metabolism, Homocysteine pharmacology, Human Umbilical Vein Endothelial Cells metabolism, Humans, Oxidative Stress, Proto-Oncogene Proteins c-bcl-2 genetics, Proto-Oncogene Proteins c-bcl-2 metabolism, Antioxidants pharmacology, Apoptosis, Human Umbilical Vein Endothelial Cells drug effects, Melatonin pharmacology, Vitamin E pharmacology, Vitamins pharmacology
- Abstract
A relationship exists between hyperhomocysteinemia and cardiovascular diseases, although the underlying mechanisms are still incompletely defined. One possibility involves a homocysteine (Hcy)-induced increased oxidative stress. Melatonin (Mel) and vitamin E (vitE) are important anti-oxidants. The main purpose of this study was (1) to compare the effect of treatments with Mel, vitE or both, on Hcy-induced apoptosis in human umbilical vein endothelial cells (HUVECs), and (2) to investigate the underlying mechanisms. Cell proliferation assay was carried out by Water Soluble Tetrazolium-1 (WST-1) assay kit. Apoptotic index was calculated by TUNEL Assay. Anti-oxidant parameters were studied by measurement of reactive oxygen species (ROS) and lipid peroxidation (LPO) levels. mRNA and protein expression levels of apoptotic and anti-apoptotic genes and proteins were studied by quantitative real time polymerase chain reaction (qRT-PCR) and Western blotting experiments respectively. The results showed that treatments with Mel, vitE or Mel + vitE suppressed Hcy-induced cell death, with a higher efficiency for the Mel and Mel + vitE treatments. Our results suggests that the mechanisms by which these anti-oxidants protected endothelial cells include the decrease in ROS and LPO levels, an increase in cell migration, the downregulation of pro-apoptotic proteins Cas 3, Cas 9, Cyt C and Bax and the upregulation of anti-apoptotic protein Bcl 2. Collectively, these results revealed the protective role of vitE and Mel against Hcy-induced cell apoptosis, which may add insight into therapeutic approaches to Hcy-induced damages.
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- 2020
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255. From Where Does the Uterine Artery Originate? A Prospective, Observational Laparoscopic Anatomic Study.
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Orhan A, Ozerkan K, Kasapoglu I, Taskiran C, Vatansever D, Sendemir E, and Uncu G
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- Adult, Dissection, Female, Gynecology, Humans, Hysterectomy methods, Iliac Artery anatomy & histology, Iliac Artery pathology, Iliac Artery surgery, Middle Aged, Prospective Studies, Retroperitoneal Space pathology, Retroperitoneal Space surgery, Turkey, Ureter pathology, Ureter surgery, Uterine Artery pathology, Uterine Artery surgery, Laparoscopy methods, Models, Biological, Uterine Artery anatomy & histology, Uterine Artery embryology
- Abstract
Study Objective: To determine and categorize the anatomic variations of the uterine artery (UA) as observed during laparoscopic hysterectomy with retroperitoneal dissection for benign conditions., Design: A prospective, observational study., Setting: A hospital department of obstetrics and gynecology, Uludag University Hospital, Bursa, Turkey., Patients: A total of 378 female patients who presented with indications for laparoscopic hysterectomy for benign disease., Interventions: Laparoscopic hysterectomy with retroperitoneal dissection was performed bilaterally in all patients between March 2014 and October 2018. The vascular anatomy beginning at the bifurcation of the common iliac artery down to the crossing of the UA with the ureter was exposed and subsequently studied. The UA was identified, and its variable branching patterns were recorded. The patterns were then categorized into groups adapted from classic vascular anatomy studies., Measurements and Main Results: Retroperitoneal dissections of 756 UAs were performed in 378 female patients. The UA was the first anterior branch of the internal iliac artery in 80.9% of the cases (Model 1; Main Model). Three additional models adequately described other variations of the UA as follows: Model 2 (Cross Model), 3.7%; Model 3 (Trifurcation Model), 3.1%; and Model 4 (Inverted-Y Model), 7.4%. The origin of the UA could not be determined in 7.4% of the cases., Conclusion: The UA is the first anterior branch of the internal iliac artery in more than 80% of females. Surgeons should be aware of the anatomic variations of the UA to perform safe and efficient procedures., (Copyright © 2020 AAGL. Published by Elsevier Inc. All rights reserved.)
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- 2020
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256. Inflammatory pathway analytes predicting rapid cognitive decline in MCI stage of Alzheimer's disease.
- Author
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Pillai JA, Bena J, Bebek G, Bekris LM, Bonner-Jackson A, Kou L, Pai A, Sørensen L, Neilsen M, Rao SM, Chance M, Lamb BT, and Leverenz JB
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- Aged, Aged, 80 and over, Chemokine CCL2 cerebrospinal fluid, Female, Humans, Interleukin-10 metabolism, Longitudinal Studies, Male, Middle Aged, Neurofilament Proteins cerebrospinal fluid, Alzheimer Disease immunology, Alzheimer Disease metabolism, Alzheimer Disease pathology, Alzheimer Disease physiopathology, Cognitive Dysfunction immunology, Cognitive Dysfunction metabolism, Cognitive Dysfunction pathology, Cognitive Dysfunction physiopathology, Disease Progression, Inflammation immunology, Inflammation metabolism, Inflammation pathology, Inflammation physiopathology
- Abstract
Objective: To determine the inflammatory analytes that predict clinical progression and evaluate their performance against biomarkers of neurodegeneration., Methods: A longitudinal study of MCI-AD patients in a Discovery cohort over 15 months, with replication in the Alzheimer's Disease Neuroimaging Initiative (ADNI) MCI cohort over 36 months. Fifty-three inflammatory analytes were measured in the CSF and plasma with a RBM multiplex analyte platform. Inflammatory analytes that predict clinical progression on Clinical Dementia Rating Scale-Sum of Boxes (CDR-SB) and Mini Mental State Exam scores were assessed in multivariate regression models. To provide context, key analyte results in ADNI were compared against biomarkers of neurodegeneration, hippocampal volume, and CSF neurofilament light (NfL), in receiver operating characteristic (ROC) analyses evaluating highest quartile of CDR-SB change over two years (≥3 points)., Results: Cerebrospinal fluid inflammatory analytes in relation to cognitive decline were best described by gene ontology terms, natural killer cell chemotaxis, and endothelial cell apoptotic process and in plasma, extracellular matrix organization, blood coagulation, and fibrin clot formation described the analytes. CSF CCL2 was most robust in predicting rate of cognitive change and analytes that correlated to CCL2 suggest IL-10 pathway dysregulation. The ROC curves for ≥3 points change in CDR-SB over 2 years when comparing baseline hippocampal volume, CSF NfL, and CCL2 were not significantly different., Interpretation: Baseline levels of immune cell chemotactic cytokine CCL2 in the CSF and IL-10 pathway dysregulation impact longitudinal cognitive and functional decline in MCI-AD. CCL2's utility appears comparable to biomarkers of neurodegeneration in predicting rapid decline., (© 2020 The Authors. Annals of Clinical and Translational Neurology published by Wiley Periodicals LLC on behalf of American Neurological Association.)
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- 2020
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257. Addition of intramuscular progesterone to vaginal progesterone in hormone replacement therapy in vitrified-warmed blastocyst transfer cycles.
- Author
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Polat M, Mumusoglu S, Bozdag G, Ozbek IY, Humaidan P, and Yarali H
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- Administration, Intravaginal, Adult, Cryopreservation, Female, Humans, Injections, Intramuscular, Live Birth, Longitudinal Studies, Pregnancy, Pregnancy Rate, Retrospective Studies, Vitrification, Embryo Implantation, Embryo Transfer methods, Progesterone administration & dosage
- Abstract
Research Question: Does intramuscular progesterone supplementation ensure ongoing pregnancy rates (OPR) comparable with vaginal progesterone only in hormone replacement therapy cycles for vitrified-warmed embryo transfer; and is there a window of serum progesterone concentration out of which reproductive outcomes may be negatively affected?, Design: Retrospective longitudinal cohort study carried out at a single IVF clinic. In total, 475 consecutive, day-5 to day-6 vitrified-warmed embryo transfer cycles using hormone replacement therapy regimen were included. Vaginal progesterone only was given to 143 patients; supplementation of vaginal progesterone only with intramuscular progesterone supplementation every third day was given to 332 patients. On the sixth day of progesterone administration, immediately before frozen-thawed embryo transfer, circulating progesterone levels were measured. Main outcome measure was OPR., Results: The baseline demographic features and embryological data of the vaginal progesterone only and intramuscular progesterone supplementation groups were comparable. The OPR were 48.3% and 51.8%, respectively (P = 0.477). Neither the circulating progesterone level nor the type of progesterone administration were independent predictors of OPR. The effect of serum progesterone levels on OPR was evaluated by percentiles (<10%, 10-49%, 50-90% and >90%), taking 50-90% as the reference sub-group. All percentiles in the intramuscular progesterone supplementation group and in the vaginal progesterone only group had similar OPR., Conclusions: Intramuscular progesterone supplementation every third day, overall, does not enhance OPR compared with vaginal progesterone only., (Copyright © 2020 Reproductive Healthcare Ltd. Published by Elsevier Ltd. All rights reserved.)
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- 2020
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258. Social media awareness among non-urogynecologists regarding the current mesh discussions in urogynecology: a survey study.
- Author
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Orhan A, Rantell A, Ozerkan K, Kasapoglu I, Ocakoglu G, Aslan K, Mert SN, Uncu G, and Cardozo L
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- Humans, Surgical Mesh, Surveys and Questionnaires, Turkey, United States, Gynecology, Social Media
- Abstract
Introduction and Hypothesis: There has been a great deal of discussion about mesh complications in urogynecology in recent years. However, awareness of other doctors who are not urogynecologists is unknown. This study was aimed at determining the level of awareness of mesh discussions among medical doctors whose specialty is not urology or gynecology., Methods: A survey study was administered, and all medical doctors, except gynecologists and urologists, were invited. Respondent doctors were classified into four groups: King's College Hospital (KCH), UK; Uludag University Hospital (UUH), Turkey; the United States (USA); and the world (WORLD). The primary outcome was the awareness of mesh discussion in urogynecology, and the secondary outcome was the social media awareness of the mesh discussion., Results: 1231 doctors responded to the survey. The awareness of the current mesh problems among the respondent doctors was 15.8% in KCH, 15.4% in UUH, 26.9% in the USA, and 16.2% in WORLD. The social media awareness about mesh problems was 20.8% in KCH, 20.3% in UUH, 32.8% in the USA, and 20.6% in WORLD. Although there were no differences among three of the groups with regard to primary and secondary outcomes, the USA group score was statistically significantly higher than the others., Conclusions: Social media can influence doctors' thinking on controversial academic issues. In this survey study, non-urogynecologist doctors in the USA cohort have higher awareness levels and a higher social media awareness level than other groups.
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- 2020
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259. The Role of Ankaferd Blood Stopper and Oxytocin as Potential Therapeutic Agents in Endometriosis: A Rat Model.
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Hortu I, Ozceltik G, Karadadas E, Erbas O, Yigitturk G, and Ulukus M
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- Animals, Chemokine CCL2 metabolism, Disease Models, Animal, Endometriosis metabolism, Female, Rats, Rats, Sprague-Dawley, Tumor Necrosis Factor-alpha metabolism, Vascular Endothelial Growth Factor A metabolism, Endometriosis drug therapy, Oxytocin pharmacology, Plant Extracts pharmacology
- Abstract
To evaluate the potential effect of Ankaferd Blood Stopper (ABS) and oxytocin (OT) in an experimental endometriosis model, 18 female Sprague Dawley rats were used in this study. The animals were divided randomly into three groups after surgical induction of endometriosis: group 1: control group (isotonic NaCl, 1 mL/kg/day, intramuscular, n=6); group 2: OT group (OT, 80 U/kg/day, intramuscular, n=6); group 3: ABS group (ABS, 1.5 mL/kg/day, intraperitoneal, n=6). Each group was treated for four weeks (two times per week). Volumes of endometriotic explants were measured in biopsy samples for histopathological analysis. Vascular endothelial growth factor (VEGF), monocyte chemotactic protein-1 (MCP-1), and tumour necrosis factor (TNF-α) levels were measured in plasma and peritoneal fluid. Endometriotic explant volumes were significantly decreased after OT administration (P<0.0001). The epithelial score was significantly decreased in both treatment groups compared to the control group (P<0.05). TUNEL immunohistochemistry showed more apoptotic changes in the endometriosis foci (gland epithelium and surrounding tissue) in the OT group than in the control group (P<0.05). The levels of VEGF, MCP-1, and TNF-α were significantly reduced in the OT group (P<0.05), whereas no significant changes in protein levels were found in the ABS-applied group. The results indicate that OT has greater potential as a therapeutic agent in experimentally induced peritoneal endometriosis, where ABS, which is a VEGF modulator, appears to act through different mechanisms to show its palliative effects on a rat model of peritoneal endometriosis.
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- 2020
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260. Gravitational displacement of submacular haemorrhage in patients with age-related macular disease.
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Erdogan G, Kirmaci A, Perente I, and Artunay O
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- Endotamponade, Fibrinolytic Agents therapeutic use, Fluorescein Angiography, Humans, Retinal Hemorrhage drug therapy, Retinal Hemorrhage etiology, Retrospective Studies, Tomography, Optical Coherence, Vitrectomy, Macular Degeneration drug therapy, Tissue Plasminogen Activator therapeutic use
- Abstract
Objectives: To investigate the efficacy of gravitational displacement following vitrectomy for the patients with submacular haemorrhage (SMH) secondary to age-related macular degeneration (AMD)., Methods: Retrospective, interventional series of nine consecutive AMD patients with SMH. All patients underwent pars plana vitrectomy (PPV) combined with subretinal tissue plasminogen activator (t-PA) and intravitreal anti-vascular endothelial growth factor (anti-VEGF) injection without any tamponade. The patients were positioned according to the location and distribution of SMH postoperatively in order to provide the maximum gravitational force effect to displace. Outcome measures were the change in visual acuity, the displacement in SMH, and the occurrence of per- and postoperative complications., Results: Complete displacement of haemorrhage occurred in all patients postoperatively. The mean preoperative and postoperative best-corrected visual acuity (BCVA) at the last visit were 2.46 and 1.7 logMAR, respectively, after a mean follow-up of 10.4 months (Range: 3-18 months) (p = 0.045). The mean duration of haemorrhage was 15.3 days (range: 3-40 days). The recurrence of SMH was observed in two (22%) patients and there were no other postoperative complications., Conclusion: Gravitational displacement following PPV combined with subretinal t-PA and intravitreal anti-VEGF injection can be considered as an effective surgical intervention in selected AMD patients with SMH.
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- 2020
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261. Synthesis and Characterization of Cross Linked Acetoguanamine Polymer Complexes: Investigation of their Thermal and Magnetic Properties.
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Guney G, Uysal S, and Koc ZE
- Abstract
In this study, 2,4-diamino-6-methyl-1,3,5-triazine (acetoguanamine) was used as the starting material. 2,4-diamino-6-methyl-1,3,5-triazine was boiled under reflux with glutaraldehyde and terephthaldehyde in acetonitrile. And, s-triazine-containing polymer ligands (IV and V) were obtained by these condensation reactions. These target s-triazin containing polymer ligands we obtained were analyzed by 1H-NMR, FT-IR and elemental analysis. Then, polymeric metal (Co2+, Ni2+ and Cu2+) complexes of the polymeric ligands (VI-XI) were obtained from the interaction with CoCl2 ∙ 6H2O, NiCl2 ∙ 6H2O and CuCl2 ∙ 2H2O at 60 ℃ in ethyl alcohol. The structures of these complexes were also illuminated and elucidated using FT-IR, elemental analysis and magnetic susceptibility analysis. The polymerization degrees of the polymeric ligands were determined by the molecular weight determination study with the viscometer.
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- 2020
262. Bioabsorbable magnesium screw versus conventional titanium screw fixation for medial malleolar fractures.
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May H, Alper Kati Y, Gumussuyu G, Yunus Emre T, Unal M, and Kose O
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- Absorbable Implants, Adult, Device Removal, Female, Fracture Fixation, Internal methods, Humans, Magnesium, Male, Middle Aged, Retrospective Studies, Titanium, Young Adult, Ankle Fractures surgery, Ankle Injuries surgery, Ankle Joint surgery, Bone Screws, Fracture Fixation, Internal instrumentation
- Abstract
Background: It is still unknown whether bioabsorbable magnesium (Mg) screws provide an advantage over titanium screws in the treatment of medial malleolar (MM) fractures. The purpose of this retrospective study is to compare the clinical and radiological outcomes of MM fractures fixed with either bioabsorbable Mg screws or conventional titanium screws., Materials and Methods: A cohort of 48 patients with MM fractures who underwent compression screw fixation was retrospectively reviewed. Twenty-three patients (16 male, 7 female; mean age: 37.9 ± 17.7 years) were treated with bioabsorbable Mg screws, and 25 patients (14 male, 11 female; mean age: 45.0 ± 15.7 years) were treated with conventional titanium screw fixation. All patients were followed up for at least 1 year, with a mean time of 24.6 ± 10.5 months (12-53 months). The American Orthopedic Foot and Ankle Society (AOFAS) scale was used to evaluate the clinical results. The Kellgren-Lawrence (KL) osteoarthritis grading was used to evaluate posttraumatic osteoarthritis on final ankle radiographs. Fracture union, rate of implant removal, and complications were recorded. Comparative analysis of two independent groups was performed using the chi-squared test and the Mann-Whitney U-test., Results: The two groups were comparable concerning demographic and clinical characteristics. Age (p = 0.146), sex (p = 0.252), side (p = 0.190), MM fracture type (p = 0.500), associated fractures (p = 0.470), and follow-up period (p = 0.903) were similar between the groups. At final follow-up examination, AOFAS score (p = 0.191) was similar between groups. Fracture union was achieved in all cases. Grade of posttraumatic osteoarthritis, according to KL, was equally distributed in both groups (p = 0.074). No deep infection or osteomyelitis was seen. Five patients in the titanium screw group underwent implant removal, due to pain in three of them and difficulty in wearing shoes in the other two (p = 0.031). Implant removal was performed after a mean of 14.2 ± 3.1 months (12-19 months)., Conclusions: Bioabsorbable Mg and titanium screws had similar therapeutic efficacy in MM fracture fixation regarding functional and radiological outcomes. However, the rate of implant removal was higher with titanium screws. Bioabsorbable Mg screws may be a favorable fixation option since secondary implant removal procedures can be prevented., Level of Evidence: Level IV, Retrospective case series.
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- 2020
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263. Micro-computed tomographic assessment of the shaping ability of the One Curve, One Shape, and ProTaper Next nickel-titanium rotary systems.
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Tufenkci P, Orhan K, Celikten B, Bilecenoglu B, Gur G, and Sevimay S
- Abstract
Objectives: This micro-computed tomographic (CT) study aimed to compare the shaping abilities of ProTaper Next (PTN), One Shape (OS), and One Curve (OC) files in 3-dimensionally (3D)-printed mandibular molars., Materials and Methods: In order to ensure standardization, 3D-printed mandibular molars with a consistent mesiobuccal canal curvature (45°) were used in the present study ( n = 18). Specimens were instrumented with the OC, OS, or PTN files. The teeth were scanned pre- and post-instrumentation using micro-CT to detect changes of the canal volume and surface area, as well as to quantify transportation of the canals after instrumentation. Two-way analysis of variance was used for statistical comparisons., Results: No statistically significant differences were found between the OC and OS groups in the changes of the canal volume and surface area before and after instrumentation ( p > 0.05). The OC files showed significantly less transportation than the OS or PTN systems for the apical section ( p < 0.05). In a comparison of the systems, similar values were found at the coronal and middle levels, without any significant differences ( p > 0.05)., Conclusions: These 3 instrumentation systems showed similar shaping abilities, although the OC file achieved a lesser extent of transportation in the apical zone than the OS and PTN files. All 3 file systems were confirmed to be safe for use in mandibular mesial canals., Competing Interests: Conflict of Interest: No potential conflict of interest relevant to this article was reported., (Copyright © 2020. The Korean Academy of Conservative Dentistry.)
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- 2020
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264. Evaluation of the neuroprotective effects of ozone in an experimental spine injury model.
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Gürkan G, Sayin M, Kizmazoglu C, Erdogan MA, Yigitturk G, Erbak Yilmaz H, Uzunoglu I, Kaya I, and Yuceer N
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Objective: The pathophysiology of spine injury consists of primary and secondary damage mechanisms. The vast majority of treatments aim to prevent or at least stop the progression of secondary neurotoxic events during the acute period. Ozone has been found to have potent antiinflammatory effects, to activate the immune system, and to have a substantial impact on the antioxidant system. In this study the authors aimed to evaluate the neuroprotective effects of ozone and their possible roles in recovery from spine injury, assessed based on biochemical, histological, and neurological parameters using an experimental spine injury model in rats., Methods: The study included 31 female Wistar albino rats. The rats were divided randomly into 5 groups, with 7 rats in each group except the sham group, which contained 3 rats, as follows: group 1 (sham), laminectomy; group 2 (control), laminectomy and spinal trauma with no medical treatment (0.5 ml isotonic saline applied 1 hour postsurgery); group 3, single medical treatment with 30 mg/kg methylprednisolone applied intraperitoneally 1 hour after laminectomy and trauma; group 4, single medical treatment with 60 μg/ml ozone at 0.7 mg/kg applied intraperitoneally 1 hour after laminectomy and trauma; and group 5, double medical treatment with 30 mg/kg methylprednisolone and 60 μg/ml ozone at 0.7 mg/kg applied intraperitoneally 1 hour after laminectomy and trauma. After neurosurgery, neurobehavioral tests were performed in all groups. After 7 days of follow-up, all the rats were killed. Biopsy specimens obtained from trauma sites were examined using H & E, cresyl violet, immunohistochemical (anticonnexin-43), and TUNEL staining processes. Levels of interleukin (IL)-1β, IL-6, and tumor necrosis factor-α (TNF-α) and total oxidant status (TOS) and total antioxidant status (TAS) were measured in blood samples., Results: The level of neurobehavioral healing was the highest in the double-treatment group (group 5), and the difference between the groups was significant. The minimum IL-6 level was found in group 5, indicating that the antiinflammatory impact was the most significant in this group (p = 0.01). Additionally, ozone was found to reduce oxidant stress more effectively than methylprednisolone (p = 0.03). Although methylprednisolone was superior to ozone in terms of the antiinflammatory effect, this effect was greater in group 5. Nevertheless, the number of neurons in group 5 was close to that of the control group, and the number of apoptotic cells was the least in group 5 (p < 0.001)., Conclusions: In acute spinal injury, the combined application of methylprednisolone and ozone was found to have a greater antiinflammatory effect, hasten clinical recovery, and increase histological recovery compared with methylprednisolone therapy alone. This study showed that this combination therapy of methylprednisolone with the addition of ozone might have a more beneficial effect in the treatment of spinal injury than methylprednisolone therapy alone.
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- 2020
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265. Protective effect of oxytocin on a methotrexate-induced ovarian toxicity model.
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Hortu I, Ozceltik G, Ergenoglu AM, Yigitturk G, Atasoy O, and Erbas O
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- Animals, Female, Humans, Oxytocin pharmacology, Rats, Rats, Sprague-Dawley, Ovary drug effects, Oxytocin therapeutic use
- Abstract
Purpose: Although cancer predominantly affects people at older ages, a substantial number of patients, like breast cancer patients, are diagnosed before they have completed their families or even before giving birth. Furthermore, cytotoxic chemotherapy may be required in addition to treat cancer survivors. The present study was conducted to investigate the protective effect of oxytocin (OT) on methotrexate (MTX)-induced ovarian toxicity in rats., Methods: Eighteen adult female Sprague-Dawley rats were used in the study. All rats were divided randomly into three groups. The control group (n = 6) received no treatment. The remaining 12 rats received a single dose of 20 mg/kg of MTX. Half of the rats (n = 6) were treated with 1 mg/kg/day of saline, and the other half (n = 6) were treated with 160 µg/kg/day of OT for 21 days. Then, blood samples were collected for biochemical analysis, and an ovariectomy was performed for histopathological examination., Results: Plasma malondialdehyde (MDA) and transforming growth factor-β (TGF-β) levels were significantly lower in the MTX + OT group compared to the MTX + saline group (p = 0.000036 for MDA; p = 0.0044 for TGF-β). AMH levels were also significantly higher in the MTX + OT group than in the MTX + saline group (p = 0.000036). The ovarian fibrosis percent was also notably lower in the MTX + OT group than in the MTX + saline group (p = 0.000036)., Conclusion: On the basis of these findings, OT is a promising agent for ameliorating harmful effects of MTX on rat ovaries in an experimental model.
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- 2020
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266. Crimean-Congo hemorrhagic fever virus in tortoises and Hyalomma aegyptium ticks in East Thrace, Turkey: potential of a cryptic transmission cycle.
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Kar S, Rodriguez SE, Akyildiz G, Cajimat MNB, Bircan R, Mears MC, Bente DA, and Keles AG
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- Animals, Arachnid Vectors virology, DNA, Viral, Disease Reservoirs virology, Phylogeny, Polymerase Chain Reaction, Turkey epidemiology, Turtles parasitology, Hemorrhagic Fever Virus, Crimean-Congo genetics, Hemorrhagic Fever Virus, Crimean-Congo isolation & purification, Hemorrhagic Fever, Crimean transmission, Ticks virology, Turtles virology, Zoonoses virology
- Abstract
Background: Recent reports have demonstrated the presence of Crimean-Congo hemorrhagic fever virus (CCHFV) genomic material in Hyalomma aegyptium ticks feeding primarily on tortoises belonging to the genus Testudo. This raises the question if these ticks and their hosts play a role in the natural transmission dynamics of CCHFV. However, the studies are limited, and assessing the relevance of H. aegyptium in perpetuating the virus in nature, and a potential spillover to humans remains unknown. This study aimed to detect CCHFV in H. aegyptium ticks and their tortoise hosts in the East Thrace region of Turkey, where H. aegyptium is the most common human-biting tick and where a high density of tortoises of the genus Testudo can be found., Methods: During the study period, 21 blood samples from different tortoises (2 T. hermanni and 19 T. graeca), 106 tick pools (containing 448 males, 152 females, 93 nymphs and 60 larvae) collected from 65 tortoises (5 T. hermanni and 60 T. graeca), 38 adult unfed questing ticks (25 males and 13 females, screened individually) and 14 pools (containing 8 nymphs and 266 larvae) of immature unfed questing ticks collected from the ground were screened for CCHFV genome by nested PCR and partial genomes sequenced., Results: As a result of the screening of these 179 samples, 17 (9.5%) were detected as positive as follows: 2 of 21 blood samples (9.52%), 13 (containing 18 nymphs in 3 pools, and 52 males and 8 females in 10 pools) of 106 tick pools from tortoises (12.26%), and 2 of 38 adult questing ticks (5.26%). No positive result was determined in 14 pools of immature questing ticks., Conclusions: Previous studies have shown that reptiles can participate in the transmission of arthropod-borne viruses, but they may contribute to different aspects of the disease ecology and evolution of tick-borne viral pathogens. Our results indicate the presence of CCHFV in questing and feeding H. aegyptium ticks as well as tortoise hosts. This may indicate that CCHFV circulates in a cryptic transmission cycle in addition to the primary transmission cycle that could play a role in the natural dynamic of the virus and the transmission to humans.
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- 2020
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267. Comparison of ultrastructural changes and the anticarcinogenic effects of thymol and carvacrol on ovarian cancer cells: which is more effective?
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Elbe H, Yigitturk G, Cavusoglu T, Baygar T, Ozgul Onal M, and Ozturk F
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- Anticarcinogenic Agents chemistry, Apoptosis drug effects, Cell Line, Tumor, Cell Proliferation drug effects, Cell Survival drug effects, Female, Humans, Oils, Volatile chemistry, Anticarcinogenic Agents pharmacology, Cymenes pharmacology, Oils, Volatile pharmacology, Ovarian Neoplasms ultrastructure, Thymol pharmacology
- Abstract
Ovarian cancer is the seventh most common cancer worldwide in women. Many anticancer drugs are currently used clinically have been isolated from plant species or are based on such substances. Thymol (5-methyl-2-isopropylphenol) and carvacrol are oxygenated aromatic compounds from the monoterpene group. They are the main constituents of thyme essential oil and show antiproliferative, antioxidant, and antiseptic properties. The aim of this study is to compare the antiproliferative and apoptotic effects of thymol and carvacrol on SKOV-3 ovarian cancer cell line. The cancer cells were treated with different concentrations of thymol and carvacrol (100, 200, 400, 600 µM) at 24 h and 48 h durations. The cell viability was investigated by MTT assay and analysis of apoptosis with annexin V assay was determined. The study show that thymol and carvacrol significantly induced apoptosis in all groups as dose and time-dependent ( p < .05). The data in the present study demonstrated that thymol and carvacrol have apoptotic and antiproliferative properties in a concentration-dependent manner toward ovarian cancer cells. SKOV-3 cancer cell line was much more sensitive to the toxic effect of thymol than carvacrol.
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- 2020
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268. Predictive and prognostic impact of preoperative complete blood count based systemic inflammatory markers in testicular cancer.
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Arda E, Arikan G, Akdere H, Akgul M, and Yuksel I
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- Adult, Aged, Case-Control Studies, Humans, Kaplan-Meier Estimate, Male, Middle Aged, Predictive Value of Tests, Prognosis, Retrospective Studies, Sensitivity and Specificity, Testicular Neoplasms mortality, Young Adult, Biomarkers, Tumor blood, Testicular Neoplasms blood
- Abstract
Purpose: To determine the utility of preoperative complete blood count (CBC) based systemic inflammatory markers in the prediction of testicular cancer and its prognosis., Material and Methods: Between 2008-2017 the data of all testicular tumor patients undergoing radical orchiectomy were retrospectively analyzed. Patient baseseline characteristics (age, tumor stage, tumor markers, etc.) and results of routine preoperative blood tests including mean platelet volume (MPV), red cell distribution width (RDW), lymphocyte ratio (LR) and neutrophil ratio (NR) were retrieved. In addition, neutrophil to lymphocyte ratio (NLR) was calculated., Results: Mean age of the tumor and control group was 36.0±15 and 30.50±11 years, respectively. Mean RDW, NR and NLR were significantly higher in the tumor group with p values<0.001; whereas LR and MPV were signifi cantly higher in the control group (p<0.001). Receiver Operating Characteristic (ROC) analyses of LR, NR, RDW, MPV, and NLR are shown in Table-3. The cut off values for RDW and NR were found as 13,7 (Area under the curve (AUC): 0.687, sensitivity = 42.2%, specifi city = 84.8%) and 55.3 (AUC:0.693, sensitivity 72.2%, specifi city 62%), respectively. Area under the curve for NLR in tumor group was 0.711, with a threshold value of 1.78 and sensitivity=81.8% and specifi city=55.4% (AUC:0.711/sig<0.001) that together with RDW exhibited the best differential diagnosis potential which could be used as an adjuvant tool in the prediction of testicular tumor and its prognosis., Conclusion: Several systemic inflammatory markers, which are obtained by routinely performed cost-effective blood tests, could demonstrate incremental predictive and prognostic information adjuvant to preoperativly achieved testiscular tumor markers., Competing Interests: None declared., (Copyright® by the International Brazilian Journal of Urology.)
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- 2020
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269. Sex and age as determinants for high blood pressure in pediatric renal transplant recipients: a longitudinal analysis of the CERTAIN Registry.
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Sugianto RI, Schmidt BMW, Memaran N, Duzova A, Topaloglu R, Seeman T, König S, Dello Strologo L, Murer L, Özçakar ZB, Bald M, Shenoy M, Buescher A, Hoyer PF, Pohl M, Billing H, Oh J, Staude H, Pohl M, Genc G, Klaus G, Alparslan C, Grenda R, Rubik J, Krupka K, Tönshoff B, Wühl E, and Melk A
- Subjects
- Adolescent, Age Factors, Blood Pressure Determination statistics & numerical data, Child, Child, Preschool, Cyclosporine administration & dosage, Cyclosporine adverse effects, Cyclosporine pharmacokinetics, Europe epidemiology, Female, Follow-Up Studies, Graft Rejection immunology, Graft Rejection prevention & control, Humans, Hypertension diagnosis, Hypertension etiology, Immunosuppressive Agents administration & dosage, Immunosuppressive Agents adverse effects, Immunosuppressive Agents pharmacokinetics, Longitudinal Studies, Male, Prevalence, Registries statistics & numerical data, Retrospective Studies, Sex Factors, Tacrolimus administration & dosage, Tacrolimus adverse effects, Tacrolimus pharmacokinetics, Time Factors, Transplant Recipients statistics & numerical data, Hypertension epidemiology, Kidney Transplantation adverse effects
- Abstract
Background: High prevalence of arterial hypertension is known in pediatric renal transplant patients, but how blood pressure (BP) distribution and control differ between age groups and whether sex and age interact and potentially impact BP after transplantation have not been investigated., Methods: This retrospective analysis included 336 pediatric renal transplant recipients (62% males) from the Cooperative European Pediatric Renal Transplant Initiative Registry (CERTAIN) with complete BP measurement at discharge and 1, 2 and 3 years post-transplant., Results: At discharge and 3 years post-transplant, arterial hypertension was highly prevalent (84% and 77%); antihypertensive drugs were used in 73% and 68% of the patients. 27% suffered from uncontrolled and 9% from untreated hypertension at 3 years post-transplant. Children transplanted at age < 5 years showed sustained high systolic BP z-score and received consistently less antihypertensive treatment over time. Younger age, shorter time since transplantation, male sex, higher body mass index (BMI), high cyclosporine A (CSA) trough levels, and a primary renal disease other than congenital anomalies of the kidney and urinary tract (CAKUT) were significantly associated with higher systolic BP z-score. Sex-stratified analysis revealed a significant association between high CSA and higher systolic BP in older girls that likely had started puberty already. An association between BP and estimated glomerular filtration rate was not detected., Conclusions: BP control during the first 3 years was poor in this large European cohort. The description of age- and sex-specific risk profiles identified certain recipient groups that may benefit from more frequent BP monitoring (i.e. young children) or different choices of immunosuppression (i.e. older girls).
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- 2020
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270. Therapeutic effect of adenosine on experimentally induced acute ulcerative colitis model in rats.
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Ercan G, Yigitturk G, and Erbas O
- Subjects
- Acetic Acid, Acute Disease, Animals, C-Reactive Protein analysis, Colitis, Ulcerative chemically induced, Colitis, Ulcerative pathology, Colon pathology, Enzyme-Linked Immunosorbent Assay, Immunohistochemistry, Male, Malondialdehyde blood, NF-kappa B analysis, Rats, Sprague-Dawley, Rectum pathology, Reference Values, Reproducibility of Results, Serum Amyloid P-Component analysis, Thiobarbituric Acid Reactive Substances, Time Factors, Treatment Outcome, Tumor Necrosis Factor-alpha analysis, Adenosine therapeutic use, Anti-Inflammatory Agents therapeutic use, Colitis, Ulcerative drug therapy
- Abstract
Purpose: To examine the therapeutic effect of external adenosine on an acetic acid-induced acute ulcerative colitis model in rats., Methods: Thirty male mature rats were divided into three groups as control, acute colitis (AC) and AC+adenosine group (AC+AD). AC was induced by rectal administration of 4% acetic acid (AA). 5mg/kg/day adenosine was performed i.p for 4 weeks to AC+AD group. Rectum and colon were excised for microscopic and histopathological histopathologic evaluations, and immunohistochemical analysis of nuclear factor kappa B (NF-kB). Blood samples were collected for biochemical detection of TNF-α, Pentraxin-3 and malondialdehyde (MDA) levels., Results: AC group had generalized hyperemia and hemorrhage with increased macroscopic and histopathological scores compared with control (P <0.0001) while adenosine treatment decreased these scores significantly (P <0.001), with reduced distribution of disrupted epithelium, leukocyte infiltrates, and focal hemorrhage. AC group showed significantly increased immunoexpression of NF-kB in rectum, plasma and tissue levels of TNF-α, plasma Pentraxin-3 and MDA levels (P <0.0001) while adenosine reduced these levels (P < 0.05)., Conclusion: Adenosine appears to promote healing of colon and rectum exposed to AA-induced AC, suggesting a boosting effect of adenosine on the intestinal immune system to cure ulcerative colitis.
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- 2020
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271. Early and Late Switch from Ranibizumab to an Intravitreal Dexamethasone Implant in Patients with Diabetic Macular Edema in the Event of a Poor Anatomical Response.
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Demir G, Ozkaya A, Yuksel E, Erdogan G, Tunc U, Celal Ocal M, and Sakır Goker Y
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- Aged, Diabetic Retinopathy physiopathology, Female, Humans, Macular Edema physiopathology, Male, Middle Aged, Retrospective Studies, Visual Acuity, Dexamethasone administration & dosage, Diabetic Retinopathy drug therapy, Drug Implants, Macular Edema drug therapy, Ranibizumab therapeutic use
- Abstract
Background and Objective: Patients with diabetic macular edema may not have optimal outcomes even with monthly ranibizumab intravitreal injections. A corticosteroid implant might be considered in such patients. The objective of this study was to compare the outcomes of switching from ranibizumab to an intravitreal dexamethasone implant after three or six consecutive monthly injections of ranibizumab., Methods: Patients with treatment-naïve diabetic macular edema who showed a poor anatomical response to three or six consecutive intravitreal ranibizumab injections and received an intravitreal dexamethasone implant were enrolled in this retrospective study. Patients were divided into two groups as early- and late-switch groups. The early-switch group consisted of the patients who initially received three consecutive monthly ranibizumab injections and the late-switch group consisted of the patients who initially received six consecutive monthly ranibizumab injections and switched to a dexamethasone implant because of a poor anatomical response. Best corrected visual acuity and central retinal thickness at the baseline and 3, 6, 9, and 12 months in the study population were recorded., Results: Sixty-eight eyes of 68 patients were included. The early-switch group consisted of 34 eyes and the late-switch group consisted of 34 eyes. The mean change in best corrected visual acuity was similar between the two groups at 3, 9, and 12 months; however, it was significantly better in the early-switch group than the late-switch group at 6 months. The change in central retinal thickness was similar between the two groups at 3, 9, and 12 months; however, it was significantly better in the early-switch group than the late-switch group at 6 months., Conclusions: Although both early switching and late switching are similar in terms of providing functional and morphological improvement, early switching appeared better for ensuring patient well-being in the early period and improving patient adherence.
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- 2020
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272. Validation of ART Calculator for Predicting the Number of Metaphase II Oocytes Required for Obtaining at Least One Euploid Blastocyst for Transfer in Couples Undergoing in vitro Fertilization/Intracytoplasmic Sperm Injection.
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Esteves SC, Yarali H, Ubaldi FM, Carvalho JF, Bento FC, Vaiarelli A, Cimadomo D, Özbek İY, Polat M, Bozdag G, Rienzi L, and Alviggi C
- Abstract
This multicenter study evaluated the reliability of the recently published ART calculator for predicting the minimum number of metaphase II (MII) oocytes (MIImin) to obtain at least one euploid blastocyst in patients undergoing in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI). We used clinical and embryonic retrospective data of 1,464 consecutive infertile couples who underwent IVF/ICSI with the intention to have preimplantation genetic testing for aneuploidy. The validation procedure followed a stepwise approach. Firstly, we assessed the distribution of euploid blastocysts per patient and found that it followed a negative binomial distribution. Secondly, we used generalized linear models and applied the Lasso procedure-including MII oocytes to adjust the data-to select the factors predicting the response variable "euploid blastocyst." Third, a logistic regression model-fit to the binomial response euploid (yes/no) for each MII oocyte-was built using the relevant factors. The observational unit was the "woman" whereas the response was the pair (m, n), where n is the number of retrieved MII oocytes and m the corresponding number of euploid blastocysts. The model was internally validated by randomly splitting the data into training and validation sets. The R-squares (~0.25) and the area under the ROC curve (~0.70) did not differ between the training and validation datasets. Fourth, mathematical equations and the calculated probabilities generated by the validation model were used to determine the MIImin required for obtaining at least one euploid blastocyst according to different success probabilities. Lastly, we compared the fittings generated by the validation model and the ART calculator and assessed the predictive value of the latter using the validation dataset. The fittings were sufficiently close for both the estimated probabilities of blastocyst euploid per MII oocyte ( r = 0.91) and MIImin ( r = 0.88). The ART calculator positive predictive values, i.e., the frequency of patients with at least one euploid blastocyst among those who achieved the estimated MIImin, were 84.8%, 87.5%, and 90.0% for 70%, 80%, and 90% predicted probabilities of success, respectively. The ART calculator effectively predicts the MIImin needed to achieve at least one euploid blastocyst in individual patients undergoing IVF/ICSI. The prediction tool might be used for counseling and planning IVF/ICSI treatments., (Copyright © 2020 Esteves, Yarali, Ubaldi, Carvalho, Bento, Vaiarelli, Cimadomo, Özbek, Polat, Bozdag, Rienzi and Alviggi.)
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- 2020
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273. Practical, rapid, and cost-efficient interior architectural precautions for prevention of COVID-19 in the workplace.
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Ozenen G
- Subjects
- Betacoronavirus, COVID-19, Disease Transmission, Infectious prevention & control, Humans, Occupational Diseases virology, SARS-CoV-2, Coronavirus Infections prevention & control, Coronavirus Infections transmission, Cost-Benefit Analysis, Interior Design and Furnishings economics, Occupational Diseases prevention & control, Pandemics prevention & control, Pneumonia, Viral prevention & control, Pneumonia, Viral transmission, Workplace economics
- Abstract
Background: During the COVID-19 pandemic, it has been essential for some workplaces to stay open. Considering the rapid spread of the virus, interior architectural re-designing of these essential workplaces such as markets, banks, and drugstores is crucial for prevention. The employees, as well as the customers in these workplaces, have a high infection rate. Some precautions need to be taken urgently to prevent the spread of the disease. Some workplaces may have already performed their action plan whereas others have not., Objective: Some practical, rapid, and cost-efficient preventive precautions are presented in this paper for employers to take action in their workplaces., Methods: Two new proposals are advised to be carried out. The contents of these newly designed barriers will be introduced., Results: Some practical and cost-efficient ideas are given within this report., Conclusion: All the preventions proposed in this paper are claimed to reduce the spread of COVID-19 and may save lives around the country as well as the world.
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- 2020
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274. Role of T1 mapping to evaluate brain aging in a healthy population.
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Kupeli A, Kocak M, Goktepeli M, Karavas E, and Danisan G
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- Adult, Aged, Aged, 80 and over, Brain physiology, Brain Mapping methods, Caudate Nucleus anatomy & histology, Caudate Nucleus physiology, Corpus Callosum anatomy & histology, Corpus Callosum physiology, Female, Globus Pallidus anatomy & histology, Globus Pallidus physiology, Healthy Volunteers, Humans, Magnetic Resonance Imaging methods, Male, Middle Aged, Thalamus anatomy & histology, Thalamus physiology, White Matter anatomy & histology, White Matter physiology, Young Adult, Aging physiology, Brain anatomy & histology
- Abstract
Purpose: To investigate the relationship between healthy brain aging and T1 relaxation time obtained by T1 mapping., Materials and Methods: A total of 211 (102 males, 109 females; age range: 20-89 years; mean age: 54 years) healthy volunteers underwent T1 mapping between July 2018 and January 2019. Regions of interest (ROIs) were placed on T1 maps in different anatomical regions, including the thalamus, putamen, globus pallidus, head of the caudate nucleus, nucleus accumbens, genu of the corpus callosum, and frontal lobe white matter (WM). Additionally, linear and quadratic regression analyses of ROIs were performed., Results: There were significant quadratic and negative linear correlations between T1 relaxation times in the thalamus, putamen, and age (p < .001). Although the nucleus accumbens did not show a significant relationship between T1 relaxation times and age by linear regression (p = .624), a statistically significant relationship was obtained by quadratic regression (p < .001). For the globus pallidus, head of the caudate nucleus, genu of the corpus callosum and frontal lobe WM the quadratic regression analysis showed a better relationship than the linear correlation analysis., Conclusion: Age-related changes in T1 relaxation time vary by location in GM and WM., (Copyright © 2019 Elsevier Inc. All rights reserved.)
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- 2020
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275. A novel combined treatment for plasminogen deficiency with lung involvement.
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Kilinc AA, Tarcin G, Kurugoglu S, Schuster V, Cokugras H, and Celkan T
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- Child, Coagulation Protein Disorders, Female, Fibrin, Humans, Plasma, Lung physiopathology, Plasminogen deficiency, Tissue Plasminogen Activator therapeutic use
- Abstract
Plasminogen deficiency is characterized by fibrin-rich pseudomembrane formation on all mucosal surfaces, particularly the conjunctiva. Respiratory system involvement is common; fibrin often obstructs the upper or lower respiratory tract, causing death. Although many treatments have been applied, no definitive treatment (especially of the respiratory involvement) yet exists. Although excision of tracheobronchial tree membranes affords temporary improvement, this should be performed only for patients in severe respiratory distress; the procedure triggers fibrin redeposition. Here, we share our experience with an 8-year-old plasminogen-deficient female with severe lung involvement; we successfully delivered local tissue plasminogen activator followed by nebulized fresh frozen plasma., (© 2019 Wiley Periodicals, Inc.)
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- 2020
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276. Development of de novo psoriasis during nivolumab therapy in a patient with small cell lung cancer.
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C Guven D, Kilickap S, Guner G, Taban H, and Dizdar O
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- Female, Humans, Middle Aged, Programmed Cell Death 1 Receptor antagonists & inhibitors, Antineoplastic Agents, Immunological adverse effects, Lung Neoplasms drug therapy, Nivolumab adverse effects, Psoriasis chemically induced, Small Cell Lung Carcinoma drug therapy
- Abstract
Introduction: The immune checkpoint inhibitors recently entered to small cell lung cancer (SCLC) stage, firstly in the third and recently in the first lines of therapy. This efficacy comes at the expense of many toxicities including skin toxicity. This toxicity is usually in the form of rash and pruritis; however, rare reactions like psoriasis can also be seen., Case Report: Herein, we report an SCLC case who developed de novo psoriasis while treated with nivolumab as the third-line treatment for SCLC., Management and Outcome: The psoriatic plaques were regressed with the topical highly potent steroid therapy, and immunotherapy was continued without further complications., Discussion: We think that rare adverse events like de novo psoriasis are important considering the expanding role of these agents; their timely recognition and treatment are important in the management of cancer patients.
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- 2020
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277. ERCC2 Lys751Gln rs13181 and XRCC2 Arg188His rs3218536 Gene Polymorphisms Contribute to Subsceptibility of Colon, Gastric, HCC, Lung And Prostate Cancer.
- Author
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Balkan E, Bilici M, Gundogdu B, Aksungur N, Kara A, Yasar E, Dogan H, and Ozturk G
- Subjects
- Female, Genetic Predisposition to Disease, Humans, Male, Middle Aged, Polymorphism, Genetic, DNA-Binding Proteins genetics, Neoplasms genetics, Xeroderma Pigmentosum Group D Protein genetics
- Abstract
Purpose: Cancer is the leading cause of death in economically developed countries and the second leading cause of death in developing countries. The relationship between genetic polymorphisms and cancer risk has been extensively researched. In the present study, we evaluated the association between polymorphisms in two DNA repair genes, ERCC2 Lys751Gln (rs13181) and XRCC2 Arg188His (rs3218536) and the risk of colorectal, stomach, HCC, prostate and lung cancer., Methods: This study was planned by the Medical Biology Unit and Department of Internal Medicine, Pathology and Surgical Medicine Sciences of Ataturk University. A total of 40 colon cancer, 40 gastric cancer, 40 hepatocellular carcinoma (HCC), 40 prostate cancer, and 40 lung cancer patients and 40 healthy individuals over 18 years of age were enrolled in the study (Controls). All patients and healthy subjects underwent ERCC2 Lys751Gln rs13181 and XRCC2 Arg188His rs3218536 genotyping. After collection of 10 ml venous blood from the patients, DNA was isolated and single nucleotide polymorphism (SNP) analysis was performed using Roche 480 Real-Time PCR device. Results were analyzed using SPSS version 23.0 software., Results: There were statistically significant differences in ERCC2 Lys751Gln rs13181 polymorphism variants GG colon and GT in the colon control and GG,TTprostate cancer groups when compared with the control group.. GG variant of XRCC2 Arg188 rs3218536 was higher in the gastric patient group. AG variant of XRCC2 Arg188 rs3218536 was higher in gastric control group Conclusion: The results of the present study demonstrate that ERC22 Lys751Gln polymorphisms may be associated with the development of colon and prostate cancers in the Turkish population. This was a small-scale study, and the results should be corroborated with further research including larger groups of patients with each cancer type and more healthy controls.
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- 2020
278. Reliability and validity of the Turkish version of the Core Outcome Measures Index for the neck pain.
- Author
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Karabicak GO, Hazar Kanik Z, Gunaydin G, Pala OO, and Citaker S
- Subjects
- Culturally Competent Care, Disability Evaluation, Humans, Reproducibility of Results, Surveys and Questionnaires, Translations, Turkey, Neck Pain diagnosis, Neck Pain therapy, Pain Measurement methods, Patient Outcome Assessment
- Abstract
Purpose: The Core Outcome Measures Index (COMI) is a short and multidimensional scale covering all domains recommended to be included in outcome measures for patients with neck pain. The purpose of the present study was to translate and cross culturally adapt the COMI into Turkish and to test its reliability and validity in patients with neck pain., Methods: One hundred and six patients with a complaint of chronic neck pain (> 3 months) were enrolled in the present study. Participants completed a questionnaire booklet containing the COMI-neck, Neck Disability Index (NDI), Neck Pain and Disability Scale (NPDS), Short Form-36 (SF-36), and pain Numeric Rating Scale (NRS). The validation of the COMI included the assessment of its construct validity and reliability., Results: Cronbach's alpha value of the questionnaire was found to be 0.774 indicating a high internal consistency. Intraclass correlation coefficient values for test-retest reliability were found to be in the range of 0.817-0.986, which indicates a sufficient level of test-retest reliability. Pearson's correlation coefficient values of the COMI with SF-36, NDI, NPDS, and NRS ranged between 0.417 and 0.700, indicating a good correlation., Conclusion: Considering the analyses, it was concluded that the Turkish version of the COMI is a valid and reliable scale for chronic neck pain patients. These slides can be retrieved under Electronic Supplementary Material.
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- 2020
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279. CLIC4 and CLIC1 bridge plasma membrane and cortical actin network for a successful cytokinesis.
- Author
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Uretmen Kagiali ZC, Saner N, Akdag M, Sanal E, Degirmenci BS, Mollaoglu G, and Ozlu N
- Subjects
- Actin Cytoskeleton metabolism, Calcium-Binding Proteins metabolism, Cell Cycle Proteins metabolism, Chloride Channels genetics, Cytoskeletal Proteins metabolism, Endosomal Sorting Complexes Required for Transport metabolism, Gene Knockout Techniques, HEK293 Cells, HeLa Cells, Humans, Microfilament Proteins metabolism, Protein Interaction Maps, Transfection, rhoA GTP-Binding Protein genetics, rhoA GTP-Binding Protein metabolism, Actins metabolism, Cell Membrane metabolism, Chloride Channels metabolism, Cytokinesis genetics
- Abstract
CLIC4 and CLIC1 are members of the well-conserved chloride intracellular channel proteins (CLICs) structurally related to glutathione-S-transferases. Here, we report new roles of CLICs in cytokinesis. At the onset of cytokinesis, CLIC4 accumulates at the cleavage furrow and later localizes to the midbody in a RhoA-dependent manner. The cell cycle-dependent localization of CLIC4 is abolished when its glutathione S-transferase activity-related residues (C35A and F37D) are mutated. Ezrin, anillin, and ALIX are identified as interaction partners of CLIC4 at the cleavage furrow and midbody. Strikingly, CLIC4 facilitates the activation of ezrin at the cleavage furrow and reciprocally inhibition of ezrin activation diminishes the translocation of CLIC4 to the cleavage furrow. Furthermore, knockouts of CLIC4 and CLIC1 cause abnormal blebbing at the polar cortex and regression of the cleavage furrow at late cytokinesis leading to multinucleated cells. We conclude that CLIC4 and CLIC1 function together with ezrin where they bridge plasma membrane and actin cytoskeleton at the polar cortex and cleavage furrow to promote cortical stability and successful completion of cytokinesis in mammalian cells., (© 2019 Uretmen Kagiali et al.)
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- 2019
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280. Laparoscopic hysterectomy trends in challenging cases (1995-2018).
- Author
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Orhan A, Ozerkan K, Kasapoglu I, Ocakoglu G, Cetinkaya Demir B, Gunaydin T, and Uncu G
- Subjects
- Chi-Square Distribution, Female, Humans, Hysterectomy methods, Hysterectomy statistics & numerical data, Hysterectomy, Vaginal methods, Hysterectomy, Vaginal statistics & numerical data, Hysterectomy, Vaginal trends, Laparoscopy statistics & numerical data, Middle Aged, Obesity epidemiology, Organ Size, Retrospective Studies, Statistics, Nonparametric, Time Factors, Turkey, Uterus anatomy & histology, Hysterectomy trends, Laparoscopy trends
- Abstract
Objective: To investigate the effect of challenging factors on laparoscopic hysterectomy trends within twenty-four years., Population and Method: This was a trend analysis study of 7558 women who underwent hysterectomy for benign indications between 1995-2018 in Bursa Uludag University Hospital, Turkey. A trend analysis of obesity, previous laparotomy (≥3) and uterine specimen weight (≥500g) was applied for abdominal hysterectomy (TAH), vaginal hysterectomy (VH), and laparoscopic hysterectomy (TLH) rates in this period. The primary outcome was laparoscopic hysterectomy trends throughout the years. We measured the effect of obesity, previous laparotomies and large uterus on TLH trends as secondary outcomes., Results: The ratio of TLHs to all hysterectomies was 2.4% in 1995 and 44.7% in 2018 which increased 33 times higher over 24 years. The percentage of obese patients in TLH cases increased from 1% to 37%, the rate of patients who had three or more previous laparotomy in TLH cases increased from 0% to 32.2%, and the percentage of patients who had more than 500g uterus specimen in laparoscopic hysterectomy cases increased from 0% to 32.8%., Conclusion: Laparoscopic hysterectomy trends are increasing in challenging cases. Obesity, previous surgeries, and large uteruses are no longer a limiting factor for laparoscopic hysterectomy., (Copyright © 2019 Elsevier Masson SAS. All rights reserved.)
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- 2019
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281. Reply to: "Is there any correlation with adnexal torsion and fecundability?"
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Calis P, Erturk N, and Bozdag G
- Subjects
- Animals, Female, Fertility, Humans, Rats, Fallopian Tube Diseases, Urogenital Abnormalities
- Published
- 2019
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282. Effects of Kinesio Taping on the Relief of Delayed Onset Muscle Soreness: A Randomized, Placebo-Controlled Trial.
- Author
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Hazar Kanik Z, Citaker S, Yilmaz Demirtas C, Celik Bukan N, Celik B, and Gunaydin G
- Subjects
- Adult, Biomarkers metabolism, Exercise Test, Female, Healthy Volunteers, Humans, Male, Quadriceps Muscle physiology, Single-Blind Method, Young Adult, Athletic Tape, Muscle Strength, Myalgia therapy, Pain Management methods
- Abstract
Objective: The purpose of this study was to examine the effects of Kinesio taping (KT) on delayed onset muscle soreness., Design: Randomized controlled study., Setting: Clinical laboratory., Participants: Fifty-four nonathletic volunteers were assigned randomly to KT (n = 27) and placebo KT (n = 27) groups., Interventions: The intense exercise protocol consisted of 100 consecutive drop jumps from a 0.60-m-high platform. Kinesio tape was applied with the fan technique on the quadriceps muscles in the KT group. The placebo KT group received the Kinesio tape with no technique and tension., Main Outcome Measure: Muscle soreness, maximal isometric quadriceps muscle strength, vertical jump height, and blood analyses (creatine kinase, lactate dehydrogenase, myoglobin, and C-reactive protein) were measured preexercise, immediately postexercise, 48 hours postexercise, and 72 hours postexercise., Results: There was a significant effect of time in all outcome measures (P < .05) except serum C-reactive protein level (P > .05). The intensity of muscle soreness was significantly lower in the KT group relative to the placebo KT group at 72 hours postexercise (P = .01). The serum creatine kinase level was significantly higher in the KT group compared with the placebo KT group at 72 hours postexercise (P = .01). There were no statistically significant differences between groups for the other outcome measures (P > .05)., Conclusions: These findings indicate that KT intervention following the intense exercise protocol reduced muscle soreness. However, it had no effect on maximal quadriceps isometric strength and vertical jump height or serum lactate dehydrogenase, myoglobin, and C-reactive protein levels. Furthermore, KT application after intense exercise also increased serum creatine kinase levels.
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- 2019
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283. Prognosis, complications and treatment response in systemic juvenile idiopathic arthritis patients: A single-center experience.
- Author
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Barut K, Adrovic A, Sahin S, Tarcin G, Tahaoglu G, Koker O, Yildiz M, and Kasapcopur O
- Subjects
- Adolescent, Adrenal Cortex Hormones adverse effects, Antirheumatic Agents adverse effects, Arthritis, Juvenile diagnosis, Arthritis, Juvenile immunology, Arthritis, Juvenile mortality, Biological Products adverse effects, Bone Density drug effects, Child, Child, Preschool, Female, Growth Disorders chemically induced, Humans, Immunosuppressive Agents adverse effects, Macrophage Activation Syndrome immunology, Macrophage Activation Syndrome mortality, Male, Multiple Organ Failure immunology, Multiple Organ Failure mortality, Opportunistic Infections immunology, Opportunistic Infections mortality, Remission Induction, Retrospective Studies, Risk Factors, Time Factors, Treatment Outcome, Turkey, Young Adult, Adrenal Cortex Hormones therapeutic use, Antirheumatic Agents therapeutic use, Arthritis, Juvenile drug therapy, Biological Products therapeutic use, Immunosuppressive Agents therapeutic use
- Abstract
Aim: Systemic juvenile idiopathic arthritis (sJIA) is a distinctive subtype of JIA characterized by systemic features and poor outcome. We aimed to investigate demographic and clinical features, long-term treatment response and disease complications in a large sJIA cohort., Methods: Patients diagnosed with sJIA followed up at a pediatric rheumatology outpatient department from January 2003 to December 2017 were included. Demographic and clinical features, long-term treatment response and disease complications were retrospectively collected., Results: A total of 168 sJIA patients (51.8% female, 48.2% male) were included: 31.5% with monocyclic, 13.7% polycyclic and 54.8% with persistent clinical course. Corticosteroids were initially used in all patients. Methotrexate was used in 75% and cyclosporine A was used in 17.3% patients. Biological drugs were used in 42.8% patients; etanercept in 29.7%, anakinra in 16%, canakinumab in 16%, tocilizumab in 10% patients. Remission off medication was achieved in 82 (48.8%). Macrophage activation syndrome (MAS) was present in 11.9%, growth retardation in 11.3% patients. Eight percent (4/50) of patients had low bone mineral density. Three patients (1.78%) died due to MAS secondary multiorgan insufficiency and infection., Conclusion: The disease is characterized with diverse clinical presentation and possibly severe complications. MAS complicated with multiorgan insufficiency is the major mortality factor. Corticosteroids represent the mainstay of the initial treatment. In patients resistant to classic treatment, biological drugs should be timely introduced., (© 2019 Asia Pacific League of Associations for Rheumatology and John Wiley & Sons Australia, Ltd.)
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- 2019
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284. Progesterone Elevation and Preventive Strategies to Avoid Implantation Failure.
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Bozdag G, Turkyilmaz E, Yildiz S, Mumusoglu S, and Yarali H
- Subjects
- Embryo Transfer, Female, Fertilization in Vitro, Humans, Pregnancy, Pregnancy Rate, Ovulation Induction adverse effects, Progesterone
- Abstract
Despite the wide utilization of gonadotropin-releasing hormone analogs, progesterone elevation (P
4 E) in the late follicular phase occurs in 5 to 30% of all ovarian stimulation (OS) cycles. Although the detrimental effect of P4 E on pregnancy rates in fresh in vitro fertilization cycles is valid in all subsets of cases, higher levels of P4 and a longer duration of P4 E may be needed in patients with a hyper-ovarian response in order for a negative impact on pregnancy rates to occur. Available preclinical and clinical data suggest that aggressive OS with high doses of follicle-stimulating hormone might increase 3β-hydroxy steroid dehydrogenase and 17β-hydroxy steroid dehydrogenase enzyme activity in human granulosa cells, which leads to high P4 production and hence a higher amount of leakage to the systemic circulation due to a lack of 17α-hydroxylase enzyme expression in human species. High P4 concentrations appear to alter gene expression in the endometrium; however, caution is necessary regarding its potential effect on oocyte/embryo quality with respect to the role of inherent follicular disruption in some women. In terms of the mechanism of overproduction in P4 synthesis, the main preventive strategy should be avoiding aggressive stimulation. Unfortunately, there is lack of large-scale randomized controlled trials for other approaches, including deferred embryo transfer in the thaw cycle. Since there is a significant inter-assay variability for P4 measurement, it may be wise to recommend that every center should define their own P4 E and the level needed for harm to occur based on their own assays and datasets before deciding the best approach., Competing Interests: The authors declare that they have no conflict of interest., (Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.)- Published
- 2019
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285. Anti-Müllerian hormone as a diagnostic tool for PCOS under different diagnostic criteria in an unselected population.
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Bozdag G, Mumusoglu S, Coskun ZY, Yarali H, and Yildiz BO
- Subjects
- Adult, Cross-Sectional Studies, Female, Humans, Ovarian Follicle diagnostic imaging, Polycystic Ovary Syndrome blood, Polycystic Ovary Syndrome epidemiology, Turkey epidemiology, Ultrasonography, Young Adult, Anti-Mullerian Hormone blood, Polycystic Ovary Syndrome diagnosis
- Abstract
Research Question: Is anti-Müllerian hormone (AMH) a valid tool to diagnose polycystic ovary syndrome (PCOS) according to different subsets of criteria among an unselected group of women?, Design: In this cross-sectional study, AMH concentrations were measured in an unselected group of women. The ability of AMH to diagnose PCOS according to National Institutes of Health (NIH), Rotterdam-2003 and Androgen Excess and PCOS Society (AE-PCOS) criteria was tested by using frozen serum aliquots (n = 392) that had been collected from a previous prevalence study of PCOS., Results: The respective age and body mass index adjusted area under the curve (aAUC, 95% confidence interval) values were 0.80 (0.71-0.89), 0.74 (0.67-0.81) and 0.71 (0.64-0.79). When the definition of polycystic ovary morphology (PCOM) was set to an antral follicle count (AFC) of 20 instead of 12, the prevalence of syndrome dropped from 19.9% to 10.2% and from 15.3% to 8.9% according to Rotterdam-2003 and AE-PCOS criteria, respectively. In patients with Phenotype A, who had hyperandrogenism, ovulatory dysfunction and PCOM, AMH had an aAUC of 0.85 (0.77-0.92) to diagnose the syndrome. In Phenotypes B (hyperandrogenism + ovulatory dysfunction), C (hyperandrogenism + PCOM) or D (ovulatory dysfunction + PCOM), AMH had poor to fair ability to diagnose the syndrome., Conclusion: AMH has poor to fair validity to diagnose PCOS among an unselected group of women, except for patients bearing all features of the syndrome (Phenotype A). This finding is valid using the NIH, Rotterdam-2003 and AE-PCOS criteria and even after revising the definition of PCOM as AFC ≥20., (Copyright © 2019 Reproductive Healthcare Ltd. Published by Elsevier Ltd. All rights reserved.)
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- 2019
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286. Male breast cancer: A 10 year retrospective case series in a tertiary care hospital.
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Yetkin G, Celayir MF, Tanik C, Citgez B, Uludag M, and Mihmanli M
- Subjects
- Aged, Antineoplastic Agents, Hormonal therapeutic use, Axilla, Breast Neoplasms, Male metabolism, Breast Neoplasms, Male therapy, Carcinoma, Ductal, Breast metabolism, Carcinoma, Ductal, Breast therapy, Carcinoma, Intraductal, Noninfiltrating metabolism, Carcinoma, Intraductal, Noninfiltrating therapy, Chemotherapy, Adjuvant, Humans, Lymph Node Excision, Male, Mastectomy, Mastectomy, Modified Radical, Middle Aged, Neoplasm Staging, Prognosis, Proportional Hazards Models, Radiotherapy, Adjuvant, Receptor, ErbB-2 metabolism, Receptors, Estrogen metabolism, Receptors, Progesterone metabolism, Retrospective Studies, Sentinel Lymph Node Biopsy, Survival Rate, Tertiary Care Centers, Tumor Burden, Turkey, Breast Neoplasms, Male pathology, Carcinoma, Ductal, Breast pathology, Carcinoma, Intraductal, Noninfiltrating pathology, Lymph Nodes pathology
- Abstract
Male breast cancer is a rare disease and it differs from breast cancer in women by some characteristics. The incidence of the disease has increased in the last 25 years. The records of male patients who underwent surgery for breast cancer between 2007 and 2017 were retrospectively reviewed in a tertiary care hospital in Istanbul, Turkey. The patients' ages, background, family history, clinical features, histopathological features of the tumour, its stage, the treatment and the survival were investigated. SPSS 15.0 for Windows programme was used for statistical analysis.Survival analysis was performed with Kaplan-Meier method.Determinants were analysed by univariate Cox regression analysis. A total of 15 patients were evaluated in our study. Fourteen patients had invasive ductal carcinoma and one patient had intraductal papillary carcinoma. The median followup period of the patients was 36 months The axillary lymph node metastasis positivity rate (number of metastatic lymph nodes/number of lymph nodes dissected) was statistically significantly higher in patients who died than in patients who survived.In univariate Cox regression analysis, the effects of age, tumour size, estrogen, progesterone, the presence of HER2/neu receptor and axillary metastasis on survival were not determined. We believe that raising awareness on male breast cancer in the community, genetic testing and screening mammography in high-risk patients will be useful in early diagnosis of the disease and improvement of its prognosis.
- Published
- 2019
287. PGT for aneuploidy does not affect three-cycle cumulative IVF discontinuation rate in women of advanced maternal age.
- Author
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Mumusoglu S, Ozbek IY, Coskun ZY, Polat M, Sokmensuer LK, Bozdag G, and Yarali H
- Subjects
- Adult, Cohort Studies, Embryo Transfer statistics & numerical data, Female, Humans, Longitudinal Studies, Middle Aged, Pregnancy, Pregnancy Rate, Retrospective Studies, Time Factors, Treatment Outcome, Aneuploidy, Fertilization in Vitro statistics & numerical data, Maternal Age, Patient Dropouts statistics & numerical data, Preimplantation Diagnosis methods, Preimplantation Diagnosis statistics & numerical data, Withholding Treatment statistics & numerical data
- Abstract
Research Question: Does preimplantation genetic testing for aneuploidy (PGT-A) influence the discontinuation rate in women with advanced maternal age (AMA) undergoing IVF?, Design: Retrospective longitudinal cohort study carried out at a single IVF clinic in Turkey. In total, 401 consecutive AMA cases were included. Discontinuation rates of pre-intervention (conventional IVF; June 2013 to October 2014; 203 couples; 270 cycles) and post-intervention (PGT-A; April 2015 to June 2016; 198 couples; 285 cycles) periods were compared. To delineate the reason for discontinuation, a telephone survey was conducted. Primary outcome measure was cumulative discontinuation rate before completing three cycles of IVF treatment without achieving an ongoing pregnancy., Results: The discontinuation rates after the first and second failed cycles were comparable between the two arms as were the cumulative discontinuation rates before completing three cycles. The cumulative ongoing pregnancy rate per embryo transfer was significantly higher in the PGT-A arm (43.2% versus 16.8%; P < 0.001). The cumulative ongoing pregnancy rate per patient was comparable between the two arms (20.7% versus 16.3%, respectively). Female age was the only significant contributor to treatment discontinuation (hazard ratio [HR] 1.07; 95% CI 1.09 to 1.13). Of the 296 couples discontinuing treatment in both arms, 179 (179/296 [60.5%]) participated in the survey; overall, psychological burden was the main reason for treatment discontinuation (37/179 [20.7%])., Conclusions: About 90% of AMA cases not achieving an ongoing pregnancy discontinue IVF treatment before completing three cycles. Discontinuation rate is not reduced by carrying out PGT-A. Female ageing is the only significant contributor, with a hazard of discontinuing further IVF treatment of 7% with female ageing of 1-year., (Copyright © 2019 Reproductive Healthcare Ltd. Published by Elsevier Ltd. All rights reserved.)
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- 2019
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288. Evaluation of the effect of combined intravitreal ranibizumab injection and sub-tenon steroid injection in the treatment of resistant diabetic macular edema.
- Author
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Eriş E, Perente I, Vural E, Vural A, Seymen Z, Celebi ARC, Erdogan G, Ozkaya A, and Artunay O
- Subjects
- Angiogenesis Inhibitors administration & dosage, Case-Control Studies, Diabetic Retinopathy diagnosis, Diabetic Retinopathy drug therapy, Drug Therapy, Combination, Female, Follow-Up Studies, Glucocorticoids administration & dosage, Humans, Intravitreal Injections, Macular Edema diagnosis, Macular Edema etiology, Male, Middle Aged, Retrospective Studies, Time Factors, Tomography, Optical Coherence, Treatment Outcome, Vascular Endothelial Growth Factor A antagonists & inhibitors, Diabetic Retinopathy complications, Macula Lutea pathology, Macular Edema drug therapy, Ranibizumab administration & dosage, Triamcinolone Acetonide administration & dosage, Visual Acuity
- Abstract
Purpose: To compare sub-tenon steroid plus anti-VEGF injection with anti-VEGF injection solely in the treatment of resistant diabetic macular edema (DME)., Method: Patients who exhibited insufficient anatomic [over 350 μm central macular thickness (CMT)] and less than 3 lines of visual gain at least six anti-VEGF injections, were randomly divided into two groups. In group I, the anti-VEGF injection was performed 10 days after the sub-tenon steroid injection [Triamcinolone acetonide (Sinakort-A
® )]. And anti-VEGF was performed when needed during the follow-up period. In group II, treatment was continued with anti-VEGF only. All patients' visual acuity and CMT were followed up for 6 months., Results: The baseline BCVA in group I and group II was 0.51 ± 0.667 logMAR and 0.47 ± 0.60 logMAR, respectively (p = 0.52). In group I and II, at the end of 6-month follow-up, BCVA improved to 0.38 ± 0.60 logMAR (p < 0.001) and 0.43 ± 0.60 logMAR (p = 0.20), respectively. The baseline CMT in group I and group II was 494 ± 118.32 and 438.20 ± 90.99 μm, respectively (p = 0.029). In group I and II, at the end of 6 months, CMT decreased to 302.57 ± 69.89 μm (p < 0.001) and 439.20 ± 107.6 μm (p = 0.96), respectively., Conclusion: Adding steroid to routine anti-VEGF treatment is an effective way of treatment method for resistant DME.- Published
- 2019
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289. Exploiting DNA repair defects in breast cancer: from chemotherapy to immunotherapy.
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Aktas BY, Guner G, Guven DC, Arslan C, and Dizdar O
- Subjects
- Animals, Antineoplastic Agents adverse effects, Antineoplastic Agents pharmacology, Breast Neoplasms genetics, Breast Neoplasms pathology, DNA Damage genetics, DNA Repair genetics, Female, Humans, Molecular Targeted Therapy, Poly(ADP-ribose) Polymerase Inhibitors administration & dosage, Poly(ADP-ribose) Polymerase Inhibitors adverse effects, Poly(ADP-ribose) Polymerase Inhibitors pharmacology, Antineoplastic Agents administration & dosage, Breast Neoplasms therapy, Immunotherapy methods
- Abstract
Introduction : Impaired DNA damage response (DDR) and subsequent genomic instability are associated with the carcinogenic process itself, but it also results in sensitivity of tumor cells to certain drugs and can be exploited to treat cancer by inducing deadly mutations or mitotic catastrophe. Exploiting DDR defects in breast cancer cells has been one of the main strategies in both conventional chemotherapy, targeted therapies, or immunotherapies. Areas covered : In this review, the authors first discuss DDR mechanisms in healthy cells and DDR defects in breast cancer, then focus on current therapies and developments in the treatment of DDR-deficient breast cancer. Expert opinion : Among conventional chemotherapeutics, platinum-based regimens, in particular, seem to be effective in DDR-deficient patients. PARP inhibitors represent one of the successful models of translational research in this area and clinical data showed high efficacy and reasonable toxicity with these agents in patients with breast cancer and BRCA mutation. Recent studies have underlined that some subtypes of breast cancer are highly immunogenic. Promising activity has been shown with immunotherapeutic agents, particularly in DDR-deficient breast cancers. Chemotherapeutics, DNA-repair pathway inhibitors, and immunotherapies might result in further improved outcomes in certain subsets of patients with breast cancer and DDR.
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- 2019
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290. Conjunctival Melanoma Targeted Therapy: MAPK and PI3K/mTOR Pathways Inhibition.
- Author
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El Zaoui I, Bucher M, Rimoldi D, Nicolas M, Kaya G, Pescini Gobert R, Bedoni N, Schalenbourg A, Sakina E, Zografos L, Leyvraz S, Riggi N, Rivolta C, and Moulin AP
- Subjects
- Adult, Aged, Aged, 80 and over, Benzimidazoles therapeutic use, Blotting, Western, Conjunctival Neoplasms enzymology, Conjunctival Neoplasms pathology, Female, Fluorescent Antibody Technique, Indirect, Humans, Imidazoles therapeutic use, Indazoles therapeutic use, Male, Melanoma enzymology, Melanoma pathology, Middle Aged, Proto-Oncogene Proteins B-raf genetics, Pyridones therapeutic use, Pyrimidinones therapeutic use, Quinolines therapeutic use, Sulfonamides therapeutic use, Tumor Cells, Cultured, Antineoplastic Agents therapeutic use, Conjunctival Neoplasms drug therapy, Melanoma drug therapy, Mitogen-Activated Protein Kinases antagonists & inhibitors, Molecular Targeted Therapy, Phosphatidylinositol 3-Kinases drug effects, Protein Kinase Inhibitors therapeutic use, TOR Serine-Threonine Kinases antagonists & inhibitors
- Abstract
Purpose: To analyze the activity of mitogen-activated protein kinase (MAPK) and phosphoinositide 3-kinases/mechanistic target of rapamycin (PI3K/mTOR) pathways in benign and malignant conjunctival melanocytic proliferations and explore whether specific inhibitors can suppress growth of conjunctival melanoma (CJM) cells., Methods: The presence of a BRAF V600E mutation and activation of ERK, MEK, S6, and AKT were assessed with immunohistochemistry in 35 conjunctival nevi and 31 melanomas. Three CJM cell lines were used: CRMM1, carrying the BRAF V600E mutation; CRMM2, harboring the NRAS Q61L mutation; and T1527A, with a BRAF G466E mutation. WST-1 assays were performed with a BRAF inhibitor (vemurafenib), two MEK inhibitors (trametinib, selumetinib), a PI3K inhibitor (pictilisib), and a dual PI3K/mTOR inhibitor (dactolisib). The phosphorylation of ERK, MEK, and S6 were tested with western blots and apoptosis with cleaved caspase-3 immunostaining., Results: A BRAF V600E mutation was detected in 42.6% of nevi and in 35.5% of CJM. MEK and ERK activation were higher in CJM, occurring in 62.9% and 45.7% of the nevi and 90.3% and 96.8% of the CJM, respectively. There was also a significant increase in S6 activation in CJM (90.3%) compared with the nevi (20%). CRMM1 was sensitive to trametinib and the PI3K inhibitors but only marginally to vemurafenib. CRMM2 was moderately sensitive to pictilisib, whereas T1527A was resistant to all drugs tested., Conclusions: The MAPK pathway activity in CJM is increased, not only as a consequence of the BRAF V600E mutation. Targeted therapy may be useful for patients with CJM, especially those with activating BRAF mutations, whereas NRAS-mutated melanomas are relatively resistant.
- Published
- 2019
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291. Does ischemia reperfusion affect fecundability in a rat model?
- Author
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Calis P, Erturk N, and Bozdag G
- Subjects
- Animals, Disease Models, Animal, Female, Pregnancy, Rats, Rats, Wistar, Adnexal Diseases physiopathology, Fertility physiology, Reperfusion Injury physiopathology, Torsion Abnormality physiopathology
- Abstract
Background: Adnexal torsion constitutes 2.7% of all gynecological emergencies. Because normal follicular growth has been demonstrated after examination of surgical specimens retrieved from oophorectomies, organ-sparing strategy has gained more popularity irrespective of the appearance of the ovary. However, the functionality of the remaining follicles has not been known. The aim of the study was to evaluate the effect of ischemia-reperfusion on fecundability in a rat model with adnexal torsion., Methods: A total of 30 female adult Wistar albino rats were assessed. In the first laparotomy, right ovaries were twisted for 8 (Group I, n = 10) or 24 (Group II, n = 10) hours. Second laparotomy was performed to untwist the torsion side and oophorectomy to the other side. In the control group (Group III, n = 10), left ovaries were removed and right ovaries were kept without any intervention. After 30 days from the last operation, female rats were mated for 10 days and euthanized 4 days later. Fecundability was calculated using beta-human chorionic gonadotropin (hCG) levels for detection of pregnancy rates., Results: The mean beta-hCG values in control, 8-hour, and 24-hour groups between pregnant rats were 19.8 ± 26.02, 11.7 ± 0.17, and 22.97 ± 11.87 mIU/mL, respectively. Whereas two out of 10 rats (20%) conceived in the 8-hour group, three out of 10 rats (30%) got pregnant in the 24-hour group. In total, whereas five out of the 20 rats got pregnant in the experimental groups, in the control group, seven out of 10 subjects conceived (25% vs 70 %, p = 0.018)., Conclusion: Although there was a statistical difference between experimental and control groups, statistical significance was not reached among 8-hour and 24-hour torsion subgroups. In this context, patients with torsion but treated with detorsion should be further investigated for their fecundability potency and be informed accordingly.
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- 2019
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292. Examination of cervical swabs of patients with endometriosis using Fourier transform infrared spectroscopy.
- Author
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Bozdag G, Igci N, Calis P, Ayhan B, Ozel Demiralp D, Mumusoglu S, and Yarali H
- Subjects
- Adult, Female, Humans, Prospective Studies, Cervix Uteri pathology, Endometriosis diagnosis, Spectroscopy, Fourier Transform Infrared methods
- Abstract
Purpose: There is no established non-invasive method to diagnose patients with endometriosis. As a nondestructive type of radiation, infrared light might be used for discrimination by causing vibration of the covalent bonds of the molecules when absorbed by the tissues. The aim of the study was to test whether cervical swab can be used to diagnose women with endometriosis using Fourier transform infrared spectroscopy (FTIR)., Methods: In this prospective case-control study, women between 18-45 years old and undergoing laparoscopy due to various reasons were recruited (n = 20). According to the findings during laparoscopy, patients were stratified as stage I-II or stage III-IV endometriosis groups. Women lacking any visible lesions of endometriosis were recruited as controls. A cervical swab was taken from all patients just before the surgical procedure and pulled into a tube containing saline solution. FTIR spectra were obtained and the fingerprint region (1750-850 cm
-1 ) was used for analyses., Results: Finally, three samples in stage I-II, five samples in stage III-IV and five samples in the control group were analyzed. Hierarchical cluster analysis and principal component analysis were performed as the chemometric method. A total of ten observable peaks were detected in the absorbance spectra of samples. The peaks at 1450 and 1405 cm-1 originating from lipids and proteins significantly increased in the stage III-IV endometriosis group when compared with controls. In addition, nucleic acid/carbohydrate ratio was significantly lower in the stage I-II group indicating that the alteration of the carbohydrate level might be important., Conclusions: Examination of cervical swab with FTIR spectroscopy might be a proper candidate for a non-invasive diagnostic approach of endometriosis.- Published
- 2019
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293. Matrix metalloproteinase-3 levels in relation to disease activity and radiological progression in rheumatoid arthritis.
- Author
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Tuncer T, Kaya A, Gulkesen A, Kal GA, Kaman D, and Akgol G
- Subjects
- Arthritis, Rheumatoid blood, Biomarkers blood, Blood Sedimentation, Case-Control Studies, Disease Progression, Enzyme-Linked Immunosorbent Assay, Humans, Matrix Metalloproteinase 3 metabolism, Predictive Value of Tests, Rheumatoid Factor, Arthritis, Rheumatoid diagnostic imaging, Matrix Metalloproteinase 3 blood, Radiography
- Abstract
Background: Rheumatoid arthritis (RA) is a chronic inflammatory and systemic disease of unknown etiology that primarily affects synovial joints and involves progressive destruction around the joints. Inflammation starting in the joint synovium causes the destruction of cartilage, bone and other adjacent tissues with pannus formation., Objectives: The aim of this study was to evaluate serum matrix metalloproteinase-3 (MMP-3) levels and their clinical and radiological significance in patients with rheumatoid arthritis., Material and Methods: The study included 59 patients with RA and 30 healthy controls. Serum MMP-3 levels were measured using the enzyme-linked immunosorbent assay (ELISA) method. Patients with a Disease Activity Score 28 (DAS28) ≤3.2 were categorized as having lower disease activity, while a DAS28 score >3.2 indicated patients with moderate/high disease activity. Additionally, the patients were divided into 2 groups in terms of disease duration: early RA (disease duration ≤2 years) and established RA (disease duration ≥2 years). Functional disability was evaluated using the Health Assessment Questionnaire (HAQ) and Nottingham Health Profile (NHP). Radiographs were scored using modified Larsen scoring., Results: Serum MMP-3 levels in patients with RA were significantly higher than in controls (p = 0.001). Serum MMP-3 levels were correlated with laboratory and clinical parameters of disease activity, including erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), DAS28, and HAQ score; the exceptions were rheumatoid factor (RF) and cyclic citrullinated peptides (CCP). The serum MMP-3 levels of RA patients with moderate/high disease activity were found to be significantly higher than those of the patients with low disease activity (p < 0.001). However, MMP-3 levels were found to be similar in both established and early RA patients (p = 0.927). Additionally, the modified Larsen scores, which indicate structural damage, correlated significantly with serum MMP-3 levels (p = 0.001)., Conclusions: These results indicate that serum MMP-3 levels may be used as an indicator for structural damage such as erosions in the early stages of the disease, and to monitor disease activity.
- Published
- 2019
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294. Ultrasound guided modified Thoracolumbar Interfascial Plane block for low back pain management.
- Author
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Ahiskalioglu A, Yayik AM, Celik EC, Aydin ME, and Uzun G
- Subjects
- Adult, Anesthetics, Local administration & dosage, Humans, Low Back Pain diagnosis, Male, Pain Measurement, Paraspinal Muscles diagnostic imaging, Paraspinal Muscles innervation, Treatment Outcome, Ultrasonography, Interventional, Low Back Pain therapy, Nerve Block methods, Pain Management methods
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- 2019
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295. Passive microinjection within high-throughput microfluidics for controlled actuation of droplets and cells.
- Author
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Azarmanesh M, Dejam M, Azizian P, Yesiloz G, Mohamad AA, and Sanati-Nezhad A
- Subjects
- Equipment Design, High-Throughput Screening Assays instrumentation, High-Throughput Screening Assays methods, Imaging, Three-Dimensional, Lab-On-A-Chip Devices, Microinjections instrumentation, Microfluidics instrumentation, Microfluidics methods, Microinjections methods
- Abstract
Microinjection is an effective actuation technique used for precise delivery of molecules and cells into droplets or controlled delivery of genes, molecules, proteins, and viruses into single cells. Several microinjection techniques have been developed for actuating droplets and cells. However, they are still time-consuming, have shown limited success, and are not compatible with the needs of high-throughput (HT) serial microinjection. We present a new passive microinjection technique relying on pressure-driven fluid flow and pulsative flow patterns within an HT droplet microfluidic system to produce serial droplets and manage rapid and highly controlled microinjection into droplets. A microneedle is secured within the injection station to confine droplets during the microinjection. The confinement of droplets on the injection station prevents their movement or deformation during the injection process. Three-dimensional (3D) computational analysis is developed and validated to model the dynamics of multiphase flows during the emulsion generation. We investigate the influence of pulsative flows, microneedle parameters and synchronization on the efficacy of microinjection. Finally, the feasibility of implementing our microinjection model is examined experimentally. This technique can be used for tissue engineering, cells actuation and drug discovery as well as developing new strategies for drug delivery.
- Published
- 2019
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296. Clinical Use of Dexamethasone Implants in Resistant Macular Edema Secondary to Branch Retinal Vascular Occlusion Compared with Intravitreal Anti-Vascular Endothelial Growth Factor.
- Author
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Eris E, Perente I, Erdogan G, Seymen Z, Sucu ME, Ozkaya A, Demircan A, Alkin Z, Demirok A, and Artunay O
- Abstract
Objectives: Branch retinal vein occlusion (BRVO) is the second most common type of retinal vascular disorder. Both inflammation and increased vascular endothelial growth factor (VEGF) levels play important roles in the pathogenesis of macular edema (ME) secondary to BRVO. The aim of this study was to compare the efficacy of 0.7-mg intravitreal dexamethasone implants with continued anti-VEGF treatment in patients with ME secondary to BRVO who were poor responders to at least 6 previous anti-VEGF injections., Methods: Patients exhibiting an insufficient response to at least 6 ranibizumab treatments and who subsequently underwent a dexamethasone implant were included Group 1. Patients who were at risk for cataract or glaucoma continued treatment with the same drug and were defined as Group 2. The best corrected visual acuity (BCVA) and central macular thickness (CMT) changes at month 2, 4, and 6 were measured., Results: Ninety eyes were evaluated. In Group 1, the mean baseline BCVA of 0.71±0.75 logarithm of the minimum angle of resolution (logMAR) improved to 0.53±0.62 logMAR at month 2 (p<.001), 0.67±0.72 logMAR at month 4 (p=0.325), and 1.03±0.83 logMAR at month 6 (p=.001). In Group 2, the mean baseline BCVA was 0.73±0.83 logMAR, and improved to 0.68±0.83 logMAR at month 2 (p=0.12), 0.698±0.81 logMAR at month 4 (p=0.270), and 0.76±0.80 at month 6 (p=0.546). The baseline CMT in each group was 588±176 μm and 545±165 μm, respectively (p=0.248). The mean CMT of Group 1 changed from a baseline measurement of 588±176 μm to 308±132 μm at month 2 (p<.001), 450±195 μm at month 4 (p<.001), and 510±190 μm at month 6 (p<.001). The mean CMT of Group 2 changed from a baseline value of 545±165 μm to 486±162 μm at month 2 (p<.001), 516±168 μm at month 4 (p<.001), and 528±171 μm at month 6 (p=0.037)., Conclusion: Dexamethasone implants were a more effective treatment for patients with BRVO-related resistant ME than ranibizumab at month 2. However, this positive effect seems to decline rapidly in the long term., Competing Interests: Conflict of Interest: None declared., (Copyright: © 2019 by Beyoglu Eye Training and Research Hospital.)
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- 2019
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297. Who needs extra time? Amniotic membrane wrapped pauci-suture model for rapid anastomoses .
- Author
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Ercin BS, Bicer A, Yigitturk G, Cinar C, Cavusoglu T, Uyanikgil Y, and Gurler T
- Subjects
- Angiography, Animals, Endothelins metabolism, Femoral Artery diagnostic imaging, Femoral Artery surgery, Femoral Vein diagnostic imaging, Femoral Vein surgery, Models, Animal, Rats, Wistar, Vascular Patency, Amnion, Anastomosis, Surgical methods, Microsurgery methods, Sutures
- Abstract
An ideal anastomosis method will obtain the highest post-anastomotic vessel patency and will repair the vessel anatomically with minimal thrombosis in an easier, faster and cheaper fashion. To achieve these goals an anastomosis model using an amniotic membrane is introduced. The study was performed on the femoral arteries of 22 Wistar Albino rats (11 control group, 11 experimental group). In the experiment group, the microvascular anastomosis was completed with three sutures and a patch of amniotic membrane which was wrapped around the anastomotic site. The conventional anastomosis technique with eight sutures was performed in the control group. The effects of the model on the patency and histological structure of the vessels were evaluated. As a result, normal patency was determined radiologically and macroscopically in all of the anastomoses. No thrombosis or aneurysm was detected in any of the anastomoses. In the angiographic study, vessel patency was detected in both the control and experimental groups. The average time to complete the arterial anastomosis was 18.14 (±2.84) and 10.39 (±2.45) minutes in the control and the experiment groups respectively. In the histological studies, anti-eNOS staining revealed that endothelin levels were significantly higher in the experimental group. This method describes a new anastomosis model in microvascular surgery with promising results that call for additional experimental studies and further clinical implementations. We believe that this experimental technique can be put into clinical practice as an alternative to the conventional microvascular anastomosis technique.
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- 2019
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298. The Comparison of Outcomes between the "Skeleton Uterus Technique" and Conventional Techniques in Laparoscopic Hysterectomies.
- Author
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Orhan A, Kasapoglu I, Ocakoglu G, Yuruk O, Uncu G, and Ozerkan K
- Abstract
Aim: The aim of this study is to compare demographic characteristics, operative data, and complication rates of women who underwent total laparoscopic hysterectomy by the skeleton uterus technique (Skeleton-TLH) with those of women who underwent TLH by the standard technique (Standard-TLH) in a university teaching and research hospital., Materials and Methods: This retrospective study included 932 laparoscopic hysterectomies in a university teaching and research hospital between January 1, 2013 and December 31, 2017. Clinical characteristics, operative outcomes, and complications were recorded and compared for the two techniques., Results: In total, 932 laparoscopic hysterectomies were performed, 454 by Skeleton-TLH and 478 by Standard-TLH. The general demographic characteristics of the patients were similar; only gravida and parity were statistically significantly different between the groups ( P < 0.001). Based on the primary outcomes (the operative data), total anesthesia time and main operation time were similar in the two groups. Estimated blood loss was statistically significantly lower in the Skeleton-TLH group than in the Standard-TLH group. Hospital stay was longer for the Skeleton-TLH group, and specimen weight was heavier. The secondary outcome was the complication rate. There were no differences between the Skeleton-TLH and Standard-TLH groups in the rates of all minor and major complications., Conclusion: TLH with the skeleton uterus technique is feasible and safe, especially for advanced pelvic surgeons. This technique not only provides retroperitoneal access to the pelvic spaces and good anatomical visibility; but it also delivers a safer laparoscopic hysterectomy by clamping the uterine arteries and monitoring the ureter throughout the operation., Competing Interests: There are no conflicts of interest.
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- 2019
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299. Semiquantitative assessment of osteoblastic, osteolytic, and mixed lytic-sclerotic bone lesions on fluorodeoxyglucose positron emission tomography/computed tomography and bone scintigraphy.
- Author
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Gurkan G, Sarikaya I, and Sarikaya A
- Abstract
Bone scintigraphy is widely used to detect bone metastases, particularly osteoblastic ones, and F-18 fluorodeoxyglucose (FDG) positron emission tomography (PET) scan is useful in detecting lytic bone metastases. In routine studies, images are assessed visually. In this retrospective study, we aimed to assess the osteoblastic, osteolytic, and mixed lytic-sclerotic bone lesions semiquantitatively by measuring maximum standardized uptake value (SUV
max ) on FDG PET/computed tomography (CT), maximum lesion to normal bone count ratio (ROImax) on bone scintigraphy, and Hounsfield unit (HU) on CT. Bone scintigraphy and FDG PET/CT images of 33 patients with various solid tumors were evaluated. Osteoblastic, osteolytic, and mixed lesions were identified on CT and SUVmax , ROImax , and HU values of these lesions were measured. Statistical analysis was performed to determine if there is a difference in SUVmax , ROImax , and HU values of osteoblastic, osteolytic, and mixed lesions and any correlation between these values. Patients had various solid tumors, mainly lung, breast, and prostate cancers. There were 145 bone lesions (22.8% osteoblastic, 53.1% osteolytic, and 24.1% mixed) on CT. Osteoblastic lesions had a significantly higher value of CT HU as compared to osteolytic and mixed lesions ( P < 0.01). There was no significant difference in mean ROImax and mean SUVmax values of osteolytic and osteoblastic bone lesions. There was no correlation between SUVmax and ROImax , SUVmax and HU, and ROImax and HU values in osteolytic, osteoblastic, and mixed lesions ( P > 0.05). Not finding a significant difference in SUVmax and ROImax values of osteoblastic, osteolytic, and mixed lesions and also lack of correlation between SUVmax , ROImax , and HU values could be due to treatment status of the bone lesions, size of the lesion, nonmetastatic lesions, erroneous measurement of SUVmax and ROImax , or varying metabolism in bone metastases originating from various malignancies., Competing Interests: There are no conflicts of interest.- Published
- 2019
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300. A Quality Analysis of Disc Herniation Videos on YouTube.
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Gokcen HB and Gumussuyu G
- Abstract
Background: An increasing number of patients are investigating health information by using the Internet because of its exponential growth. Therefore, it is important to test the accuracy of the information presented to determine which information should not be shared. This study investigated the information available on YouTube with regard to disc herniation., Methods: The first 50 videos found after the keyword "disc herniation" was used in the YouTube search engine were included in the study. Video popularity was evaluated with an index called the video power index (VPI). The quality and accuracy of the information were evaluated by 2 independent spinal surgeons using the Journal of American Medical Association (JAMA) score and the DISCERN scoring system. Interobserver agreement and individual correlations of the data of each video were statistically analyzed., Results: Of the 50 videos evaluated, 16 (32%) contained animation and 34 (64%) contained real images. The mean duration was 6.587 minutes, and the mean view was 423.472. The mean DISCERN score was 30.7 (±10.3), and the mean JAMA score was 1.8 (±0.5). There was good agreement between the 2 researchers in terms of DISCERN and JAMA scores. No statistically significant correlation was found between the JAMA and DISCERN scores of both researchers and VPI values, video lengths, animation, or real images., Conclusions: The quality of the disc herniation information offered on YouTube is low. The evaluation of medical information obtained from the Internet by health professionals is an important step in guiding the correct flow of medical information to patients., (Copyright © 2019 Elsevier Inc. All rights reserved.)
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- 2019
- Full Text
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