21 results on '"Yildirim S"'
Search Results
2. Epidemiological analysis of the victıms wıth crush syndrome in earthquakes of southeastern Turkey.
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Ozturk I, Gungor O, Ozturk S, Olmaz R, Keskin AJG, Kocyigit I, Sipahioglu MH, Dede F, Ulu S, Turgutalp K, Torun D, Sahutoglu T, Erdur FM, Altunoren O, Danis R, Yildiz G, Gurel A, Horoz M, Kucuksu M, Karakose S, Yildirim T, Altiparmak MR, Ayli MD, Tugcu M, Eren Z, Eroglu E, Yavuz YC, Akcali E, Sit D, Polat M, Yildirim S, Alagoz S, Bek SG, Pembegul I, Karaaslan T, Keles M, Sari F, Yilmaz U, Gorgulu N, Sahin G, Aydin Z, Yadigar S, Ulutas O, Selcuk NY, Ayar Y, Turgut D, Oto OA, Koc M, Yıldız A, Tuglular S, and Sever MS
- Abstract
Background: Each year, millions face natural disasters, encountering mass fatalities and severe medical issues such as crush injuries and crush syndrome. Crush syndrome, marked by acute kidney injury (AKI) and hyperkalemia, correlates with mortality. This study focuses on presenting epidemiological data on kidney disease resulting from the February 6, 2023 earthquakes centered in Kahramanmaras., Methods: This retrospective analysis included patients diagnosed with crush syndrome after the 2023 Kahramanmaras earthquakes, treated in regional hospitals or referred elsewhere in Turkey. Patient data were documented using the web-based system developed by the Turkish Nephrology Association Renal Disaster Working Group., Results: Of the 1024 analyzed patients from 46 centers, 515 (50.3%) were women. The mean age was 41 ± 16 years, with a median duration of 12 h under rubble, and the median presentation time to the first health facility was 4 h after extrication from the rubble. Upon admission, 79.8% received intravenous fluid therapy, all potassium-free. Initial serum creatinine, K
+ , and creatinine kinase levels averaged 2.59 ± 2 mg/dl, 5.1 ± 1 mmol/L 38,305 ± 54,303 U/L, respectively. Intensive care unit (ICU) admissions were 53.6%, with mean hospital and ICU stays of 20 and 11 days, respectively. Compartment syndrome occurred in 40.8% of patients, with 75.8% undergoing fasciotomy. Acute kidney injury developed in 67.9% of patients, with 70.3% undergoing hemodialysis, totaling 3016 sessions on 488 patients. The overall in-hospital mortality rate was 9.8%., Conclusion: Earthquakes have a significant impact on kidney health. Although our study indicates some progress compared to previous earthquake responses, there remains a crucial need for drills emphasizing post-earthquake initial response, fluid-electrolyte balance management, and emergency dialysis protocols., (© 2024. The Author(s) under exclusive licence to Italian Society of Nephrology.)- Published
- 2024
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3. Effects of incremental peritoneal dialysis with low glucose-degradation product neutral pH solution on clinical outcomes.
- Author
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Yeter HH, Altunok M, Cankaya E, Yildirim S, Akturk S, Bakirdogen S, Akoğlu H, Bulut M, Sahutoglu T, Erdut A, Ozkahya M, Koc Y, Tunca O, Kara E, Erek M, Polat M, Akagun T, and Guz G
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- Humans, Male, Female, Middle Aged, Prospective Studies, Hydrogen-Ion Concentration, Aged, Treatment Outcome, Peritoneal Dialysis, Continuous Ambulatory, Kidney Failure, Chronic therapy, Retrospective Studies, Adult, Glucose, Peritoneal Dialysis, Dialysis Solutions chemistry
- Abstract
Purpose: Incremental peritoneal dialysis (IPD) could decrease unfavorable glucose exposure results and preserve (RKF). However, there is no standardization of dialysis prescriptions for patients undergoing IPD. We designed a prospective observational multi-center study with a standardized IPD prescription to evaluate the effect of IPD on RKF, metabolic alterations, blood pressure control, and adverse outcomes., Methods: All patients used low GDP product (GDP) neutral pH solutions in both the incremental continuous ambulatory peritoneal dialysis (ICAPD) group and the retrospective standard PD (sPD) group. IPD patients started treatment with three daily exchanges five days a week. Control-group patients performed four changes per day, seven days a week., Results: A total of 94 patients (47 IPD and 47 sPD) were included in this study. The small-solute clearance and mean blood pressures were similar between both groups during follow-up. The weekly mean glucose exposure was significantly higher in sPD group than IPD during the follow-up (p < 0.001). The patients with sPD required more phosphate-binding medications compared to the IPD group (p = 0.05). The rates of peritonitis, tunnel infection, and hospitalization frequencies were similar between groups. Patients in the sPD group experienced more episodes of hypervolemia compared to the IPD group (p = 0.007). The slope in RKF in the 6th month was significantly higher in the sPD group compared to the IPD group (65% vs. 95%, p = 0.001)., Conclusion: IPD could be a rational dialysis method and provide non-inferior dialysis adequacy compared to full-dose PD. This regimen may contribute to preserving RKF for a longer period., (© 2024. The Author(s), under exclusive licence to Springer Nature B.V.)
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- 2024
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4. Bilateral ureteral stones; factors affecting treatment decision.
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Sinanoglu O, Yildirim S, Suceken FY, Bicaklioglu F, Aydin ME, Uslu M, Arikan O, and Sarica K
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- Humans, Male, Female, Middle Aged, Adult, Retrospective Studies, Aged, Treatment Outcome, Creatinine blood, Urinary Tract Infections epidemiology, Urinary Tract Infections etiology, Ureteral Calculi surgery, Ureteral Calculi therapy, Ureteroscopy, Lithotripsy methods, Stents, Clinical Decision-Making
- Abstract
Aim: To evaluate certain factors that may affect the decision-making process for the rational management approach in cases presenting with bilateral ureteral stones., Methods: A total of 153 patients presenting with bilateral ureteral stones from 6 centers were evaluated and divided in three groups. Group 1 (n:21) Patients undergoing DJ stent insertion in one ureter and ureterorenoscopic (URS) lithotripsy for the contralateral ureteral stone. Group 2 (n:91), URS lithotripsy for both ureteral stones and Group 3 (n:41) patients undergoing bilateral DJ stent insertion. The outcomes of the procedures and the relevant patient as well as stone related factors have been comparatively evaluated in three groups., Results: While associated UTI rates and serum creatinine levels were significantly higher in bilateral DJ group, previous URS history was found to be significantly higher in cases undergoing bilateral URS than those undergoing bilateral DJ stenting. URS was performed significantly more often in cases with lower ureteral stones and DJ stenting seems to be more rational approach in upper ureteral stones. In patients with lower ureteral stones, larger and harder stones, endourologists tended to perform URS as the first option., Conclusions: Decision making for a rational approach in cases with bilateral ureteral stones my be challenging. Our findings demonstated that serum creatinine levels, associated UTI, location and the hardness of the stone and previous ureteroscopy anamnesis could be important factors in making a decision between JJ stenting and ureteroscopic stone extraction in emergency conditions., (© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
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- 2024
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5. Confirmation of negative urine culture status after appropriate antibiotic treatment prior to endourological stone procedures: Is it really necessary?
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Sahin C, Sobay R, Asik A, Sahinler EB, Yildirim S, Kul K, and Sarica K
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- Humans, Anti-Bacterial Agents therapeutic use, Urinalysis, Postoperative Complications, Retrospective Studies, Urinary Tract Infections drug therapy, Urinary Tract Infections epidemiology, Urinary Tract Infections etiology, Kidney Calculi surgery
- Abstract
To evaluate the necessity of confirmation for a negative urine culture test outcome after an appropriate antibiotic regimen for urinary tract infection (UTI) prior to endoscopic stone removal procedures. 170 cases receiving an appropriate antibiotic treatment for culture proven UTI based on test outcomes before endoscopic stone removal were evaluated in two groups: Group 1 (n = 85) Patients in whom a second urine culture test was performed to ensure "negative urine culture" status prior to the procedures after receiving antibiotic therapy and Group 2 (n = 85). Patients receiving the same antibiotic therapy without any additional urine culture test before the procedures. Cases were comparatively evaluated with respect to the statistical significance of post-operative infective complications (fever, sepsis), duration of hospital stay and readmission rates during early post-operative period. Our findings demonstrated no significant difference regarding the rate of infective complications (presence of fever, incidence of septic findings), hospitalization period and readmission rates between the two groups. Although the presence of a negative urine status has been confirmed by urine culture test in group 1 cases, no additional urine culture test was performed with this aim in group 2 cases (negative urine culture was confirmed only with urinalysis) and the outcomes regarding the infective problems were found to be similiar. Our current findings indicate that a second urine culture test may not be a "must" if the patients receive an appropriate antibiotic regimen based on the sensitivity test outcomes for a reasonable time period., (© 2024. The Author(s).)
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- 2024
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6. Geographic Diversity in Clinical Problem-Solving Exercises.
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Murillo Chavez FA, Araujo de Oliveira Santana M, Yildirim S, Alemán MJ, and Nematollahi S
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- Humans, Problem Solving
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- 2023
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7. The potential effect mechanism of high-fat and high-carbohydrate diet-induced obesity on anxiety and offspring of zebrafish.
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Türkoğlu M, Baran A, Sulukan E, Ghosigharehagaji A, Yildirim S, Ceyhun HA, Bolat İ, Arslan M, and Ceyhun SB
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- Animals, Anxiety etiology, Carbohydrates, Humans, Obesity etiology, Diet, High-Fat adverse effects, Zebrafish
- Abstract
Anxiety and obesity are two current phenomena. They are among the important public health problems with increasing prevalence worldwide. Although it is claimed that there are strong relations between them, the mechanism of this relationship has not been fully clarified yet. On the other hand, the effect of this relationship on the offspring has been another research subject. In this study, obese zebrafish were obtained by feeding two different diets, one containing high amount of lipid (HF) and the other containing high amount of carbohydrate (HK), and their anxiety levels were evaluated. To establish a relationship between these two phenomena, in addition to histopathological and immunohistochemical analysis in the brain tissues of fish, the transcription levels of some genes related to lipid and carbohydrate metabolisms were determined. In addition, offspring were taken from obese zebrafish and studied to examine the effect of parental obesity on offspring. As a result, it was observed that the HC diet, causing more weight increase than the HF diet, showed an anxiolytic while the HF diet an anxiogenic effect. It was suggested that the probable cause of this situation may be the regulatory effect on the appetite-related genes depending on the upregulation severity of the PPAR gene family based on the diet content. In addition, it was also suggested that it may have contributed to this process in neuron degenerations caused by oxidative stress. Regarding effects on offspring, it can be concluded that HF diet-induced obesity has more negative effects on the next generation than the HC diet.Level of evidenceNo Level of evidence: animal study., (© 2021. The Author(s), under exclusive licence to Springer Nature Switzerland AG part of Springer Nature.)
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- 2022
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8. The floating kidney: an unusual complication of nephrotic syndrome.
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Yildirim S and Guz G
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- Humans, Kidney, Glomerulosclerosis, Focal Segmental, Kidney Diseases, Nephrotic Syndrome diagnosis, Nephrotic Syndrome etiology, Urinary Tract
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- 2021
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9. Medical research and reproductive medicine in an ethical context: a critical commentary on the paper dealing with uterine lavage published by Munné et al.
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Murtinger M, Wirleitner B, Hradecký L, Comploj G, Okhowat J, Spitzer D, Stadler J, Haidbauer R, Schuff M, Yildirim S, Soepenberg T, Eibner K, and Gagsteiger F
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- Adult, Aneuploidy, Embryo Implantation genetics, Embryo Transfer ethics, Female, Fertilization in Vitro ethics, Humans, Male, Oocyte Retrieval ethics, Oocytes cytology, Pregnancy, Semen cytology, Biomedical Research ethics, Oocytes growth & development, Preimplantation Diagnosis ethics, Reproductive Medicine ethics
- Abstract
A recent study published in Human Reproduction claimed that uterine lavage offers a non-surgical, minimally invasive strategy for the recovery of human embryos from fertile women who do not want or need IVF for medical reasons but who desire preimplantation genetic testing (PGT) for embryos. To prove this hypothesis, the researchers recruited dozens of young Mexican women. The prospective oocyte donors underwent ovarian stimulation to induce the production of multiple mature oocytes. Subsequently, these women were inseminated by donor semen. A few days later, the developing embryos were collected by uterine lavage (uterine flushing) and subjected to genetic testing for aneuploidies (PGT-A). Oocyte donors with persistently elevated hCG levels, indicating the implantation of one or more embryos after uterine lavage, had to undergo uterine curettage and/or treatment with methotrexate. A critical opinion paper discussing the aforementioned study was published by De Santis and colleagues and has raised critical issues that are largely technical in nature. However, this opinion paper neglects-from our point of view-critical issues of the Mexican study regarding ethical principles and moral standards in human research. These aspects are summarized below.
- Published
- 2020
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10. Protective effects of zingerone on cisplatin-induced nephrotoxicity in female rats.
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Kandemir FM, Yildirim S, Caglayan C, Kucukler S, and Eser G
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- Animals, Female, Rats, 8-Hydroxy-2'-Deoxyguanosine, Apoptosis drug effects, Autophagy, Blood Urea Nitrogen, Catalase metabolism, Deoxyguanosine analogs & derivatives, DNA Damage, Glutathione metabolism, Glutathione Peroxidase metabolism, Inflammation metabolism, Interleukin-6 metabolism, Lipid Peroxidation, NF-kappa B metabolism, Oxidation-Reduction, Oxidative Stress drug effects, Superoxide Dismutase metabolism, Toxicity Tests, Tumor Necrosis Factor-alpha metabolism, Antioxidants metabolism, Cisplatin toxicity, Guaiacol analogs & derivatives, Guaiacol metabolism, Kidney drug effects, Kidney metabolism
- Abstract
Zingerone (ZO), one of the active components of ginger (Zingiber officinale), is a phenolic alkanone with antioxidant, antiapoptotic, and anti-inflammatory properties. Cisplatin (CP) is a widely used chemotherapeutic drug for solid tumors, but its therapeutic use is limited due to dose-dependent nephrotoxicity. In the present study, we investigated the ameliorative effect of ZO against CP-induced nephrotoxicity. Intraperitoneal administration of single-dose CP (7 mg/kg body weight) on the first day enhanced kidney lipid peroxidation and reduced antioxidant enzyme activities such as catalase (CAT), superoxide dismutase (SOD), glutathione peroxidase (GPx), and glutathione (GSH). CP increased serum urea and creatinine levels and disrupted histological integrity while causing a decrease aquaporin 1 (AQP1) level in the kidney tissues. CP induced inflammatory responses by elevating the levels of tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), interleukin-6 (IL-6), interleukin-33 (IL-33) and nuclear factor kappa B (NF-κB), and activities of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2). Moreover, it also caused oxidative DNA damage and activation of apoptotic pathway by increasing of 8-hydroxy-2'-deoxyguanosine (8-OHdG), p53, cysteine aspartate-specific protease-3 (caspase-3), and Bcl-2-associated x protein (bax) while decreasing B cell lymphoma-2 (Bcl-2). However, treatment with ZO at a dose of 25 and 50 mg/kg b.wt. for 7 days significantly decreased oxidative stress, apoptosis, inflammation, and histopathological alterations while increased AQP1 levels in the kidney tissue. The results of the current study suggested that ZO as an effective natural product attenuates CP-induced nephrotoxicity.
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- 2019
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11. Naringin protects against cyclophosphamide-induced hepatotoxicity and nephrotoxicity through modulation of oxidative stress, inflammation, apoptosis, autophagy, and DNA damage.
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Caglayan C, Temel Y, Kandemir FM, Yildirim S, and Kucukler S
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- Animals, Chemical and Drug Induced Liver Injury immunology, Chemical and Drug Induced Liver Injury metabolism, Chemical and Drug Induced Liver Injury pathology, Cyclophosphamide toxicity, Inflammation, Kidney immunology, Kidney metabolism, Kidney pathology, Male, Oxidation-Reduction, Rats, Rats, Wistar, Apoptosis drug effects, Autophagy drug effects, Chemical and Drug Induced Liver Injury prevention & control, DNA Damage drug effects, Flavanones pharmacology, Kidney drug effects, Oxidative Stress drug effects
- Abstract
Cyclophosphamide (CP) is a common chemotherapeutic agent that is effective against a wide variety of tumors. The associated hepatotoxicity and nephrotoxicity, however, limit its therapeutic use. Naringin (NG) is a natural flavanone glycoside that has pharmacological and therapeutic activities, such as anti-inflammation, anti-apoptotic, and antioxidant properties. Therefore, the present study was undertaken to evaluate the protective effect of NG against CP-induced hepatotoxicity and nephrotoxicity in rats. Rats were pre-treated with NG (50 and 100 mg/kg b.w.) for 7 days before administering a single dose of CP (200 mg/kg b.w.) on the seventh day. CP-induced hepatotoxicity and nephrotoxicity were associated with an increase in serum toxicity markers and a decrease in antioxidant enzyme activities. CP also induced inflammatory responses by increasing the levels of tumor necrosis factor-α (TNF-α), nuclear factor kappa B (NF-κB), interleukin-6 (IL-6), and interleukin-1β (IL-1β), and activities of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2). Moreover, it activated the apoptotic and autophagic pathway by increasing cysteine aspartate-specific protease-3 (caspase-3) expression and light chain 3B (LC3B) level and also increased the expression of 8-hydroxy-2'-deoxyguanosine (8-OHdG), which is the marker of oxidative DNA damage. Pre-treatment with NG (50 and 100 mg/kg), however, significantly decreased serum toxicity markers, increased antioxidant enzyme activities, and regulated inflammation, apoptosis, autophagy, and oxidative DNA damage in hepatic and renal tissues. These results indicated that NG was an effective protectant against CP-induced hepatotoxicity and nephrotoxicity.
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- 2018
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12. Analysis of functional brain connections for positive-negative emotions using phase locking value.
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Dasdemir Y, Yildirim E, and Yildirim S
- Abstract
In this study, we investigate the brain networks during positive and negative emotions for different types of stimulus (audio only, video only and audio + video) in [Formula: see text], and [Formula: see text] bands in terms of phase locking value, a nonlinear method to study functional connectivity. Results show notable hemispheric lateralization as phase synchronization values between channels are significant and high in right hemisphere for all emotions. Left frontal electrodes are also found to have control over emotion in terms of functional connectivity. Besides significant inter-hemisphere phase locking values are observed between left and right frontal regions, specifically between left anterior frontal and right mid-frontal, inferior-frontal and anterior frontal regions; and also between left and right mid frontal regions. ANOVA analysis for stimulus types show that stimulus types are not separable for emotions having high valence. PLV values are significantly different only for negative emotions or neutral emotions between audio only/video only and audio only/audio + video stimuli. Finding no significant difference between video only and audio + video stimuli is interesting and might be interpreted as that video content is the most effective part of a stimulus.
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- 2017
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13. Tools for visualization of phosphoinositides in the cell nucleus.
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Kalasova I, Fáberová V, Kalendová A, Yildirim S, Uličná L, Venit T, and Hozák P
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- Antibodies immunology, Antigen-Antibody Reactions, Cell Nucleolus metabolism, Cells, Cultured, Fluorescent Antibody Technique, Indirect, Humans, Microscopy, Confocal, Microscopy, Fluorescence, Phosphatidylinositols immunology, Phosphatidylinositols metabolism, Cell Nucleolus chemistry, Phosphatidylinositols analysis
- Abstract
Phosphoinositides (PIs) are glycerol-based phospholipids containing hydrophilic inositol ring. The inositol ring is mono-, bis-, or tris-phosphorylated yielding seven PIs members. Ample evidence shows that PIs localize both to the cytoplasm and to the nucleus. However, tools for direct visualization of nuclear PIs are limited and many studies thus employ indirect approaches, such as staining of their metabolic enzymes. Since localization and mobility of PIs differ from their metabolic enzymes, these approaches may result in incomplete data. In this paper, we tested commercially available PIs antibodies by light microscopy on fixed cells, tested their specificity using protein-lipid overlay assay and blocking assay, and compared their staining patterns. Additionally, we prepared recombinant PIs-binding domains and tested them on both fixed and live cells by light microscopy. The results provide a useful overview of usability of the tools tested and stress that the selection of adequate tools is critical. Knowing the localization of individual PIs in various functional compartments should enable us to better understand the roles of PIs in the cell nucleus.
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- 2016
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14. Evaluation of the serum cystatin C values in prediction of indications for hemodialysis in patients with chronic renal failure.
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Sit D, Basturk T, Yildirim S, Karagoz F, Bozkurt N, and Gunes A
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- Adult, Aged, Aged, 80 and over, Biomarkers blood, Female, Glomerular Filtration Rate, Humans, Kidney Failure, Chronic physiopathology, Male, Middle Aged, Predictive Value of Tests, Young Adult, Cystatin C blood, Kidney Failure, Chronic blood, Kidney Failure, Chronic therapy, Renal Dialysis
- Abstract
Background: Indications of dialysis treatment for patients with end-stage renal disease depend on various clinical and laboratory parameters. In this study, we aimed to determine whether standardized serum cystatin C (SCC) equation may be an applicability of marker for dialysis initiation and its relationship to other clearance values among patients with advanced chronic kidney disease., Materials and Methods: A total of 84 patients (45 males, 39 females) aged 19-89 were evaluated in this study. Hemodialysis was indicated according to clinical and laboratory findings, and estimated glomerular filtration rate (eGFR) was according to four different formulas [MDRD, EpiCKD, Cockcroft Gault formula (CGF) and SCC equation]., Results: eGFR values of patients in the study were 7.23 ± 3.26, 7.86 ± 3.78, 15.09 ± 10.88 and 11.31 ± 4.54 according to MDRD, EpiCKD, SCC equation and CGF, respectively. There was a positive correlation between MDRD, EpiCKD and CGF, and between EpiCKD and CGF (p < 0.01). Also, statistically significant correlation was found between SCC equation and CGF (p < 0.05)., Conclusion: SCC equation was not seemed to be an appropriate marker for starting dialysis in patients with advanced CKD.
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- 2014
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15. Actin complexes in the cell nucleus: new stones in an old field.
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Castano E, Philimonenko VV, Kahle M, Fukalová J, Kalendová A, Yildirim S, Dzijak R, Dingová-Krásna H, and Hozák P
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- Actins chemistry, Animals, Cell Nucleus chemistry, DNA Repair, DNA Replication, Humans, Microfilament Proteins chemistry, Models, Biological, Actins metabolism, Cell Nucleus metabolism, Microfilament Proteins metabolism
- Abstract
Actin is a well-known protein that has shown a myriad of activities in the cytoplasm. However, recent findings of actin involvement in nuclear processes are overwhelming. Actin complexes in the nucleus range from very dynamic chromatin-remodeling complexes to structural elements of the matrix with single partners known as actin-binding proteins (ABPs). This review summarizes the recent findings of actin-containing complexes in the nucleus. Particular attention is given to key processes like chromatin remodeling, transcription, DNA replication, nucleocytoplasmic transport and to actin roles in nuclear architecture. Understanding the mechanisms involving ABPs will definitely lead us to the principles of the regulation of gene expression performed via concerting nuclear and cytoplasmic processes.
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- 2010
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16. A method for the reduction of chronic pain after tension-free repair of inguinal hernia: iliohypogastric neurectomy and subcutaneous transposition of the spermatic cord.
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Caliskan K, Nursal TZ, Caliskan E, Parlakgumus A, Yildirim S, and Noyan T
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- Chi-Square Distribution, Chronic Disease, Humans, Male, Middle Aged, Neurosurgical Procedures, Polypropylenes, Prospective Studies, Spermatic Cord surgery, Statistics, Nonparametric, Surgical Mesh, Treatment Outcome, Hernia, Inguinal surgery, Hypogastric Plexus surgery, Inguinal Canal innervation, Pain, Postoperative prevention & control
- Abstract
Purpose: We assessed the efficacy of iliohypogastric neurectomy and subcutaneous transposition of the spermatic cord and ilioinguinal and genital nerves on the incidence of postoperative chronic pain (PCP) after open inguinal hernia repair with polypropylene mesh., Methods: Between October 2006 and November 2006, 54 adult male patients with primary inguinal hernia were randomised into two groups. In group A, we performed Lichtenstein hernia repair, neurectomy and the new procedure; in group B, only Lichtenstein's operation was performed., Results: One month after operation, the incidence rate of PCP was significantly lower in group A. At 6 months, there was no significant difference between both groups regarding PCP at rest and coughing. However, there were no patients who complained of PCP after walking and climbing up stairs in group A. The sensorial changes in the groin region were similar in the two groups., Conclusion: This procedure decreases the incidence of physical activity-induced PCP, without increasing the risks of sensory changes.
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- 2010
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17. Effect of hypothyroidism on the purinergic responses of corpus cavernosal smooth muscle in rabbits.
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Yildirim MK, Bagcivan I, Sarac B, Kilicarslan H, Yildirim S, and Kaya T
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- Adenosine pharmacology, Adenosine Triphosphate pharmacology, Analysis of Variance, Animals, Cyclic GMP metabolism, Disease Models, Animal, Electric Stimulation, Female, Impotence, Vasculogenic metabolism, Male, Muscle Relaxation physiology, Muscle, Smooth, Vascular physiology, Testosterone metabolism, Thyroid Hormones metabolism, Thyroidectomy, Hypothyroidism complications, Hypothyroidism metabolism, Impotence, Vasculogenic etiology, Muscle, Smooth, Vascular metabolism, Penis metabolism, Receptors, Purinergic physiology
- Abstract
Aims: Several studies have reported evidence of hormonal abnormalities in 25-35% of impotent men. Hypothyroidism has been reported to occur in 6% of impotent men. In the present study, we examined purinergic relaxation responses in hypothyroidism in an experimental rabbit model and compared them with controls to evaluate the possible involvement of the purinergic pathway., Materials and Methods: The study comprised 20 male New Zealand white rabbits. The rabbits were divided into two equal groups. We tested the effects of ATP, alpha beta ATP, and adenosine precontracted with phenylephrine on the isolated corpus cavernosum preparations from control and hypothyroid rabbits. We also evaluated the effects of ATP, alpha beta ATP, and adenosine on the cGMP levels in the isolated corpus cavernosum preparations from control and hypothyroid rabbits., Results: T3, T4, and testosterone levels were significantly lower in hypothyroid rabbits. ATP, alpha beta ATP, carbachol, and electrical field stimulation (EFS)-induced frequency-dependent relaxation responses in the isolated rabbit corpus cavernosum strips precontracted with phenylephrine reduced significantly (P<0.05). Adenosine-induced relaxation responses did not change significantly in hypothyroid rabbits., Conclusion: Reduction of relaxation response in hypothyroid rabbits corpus cavernosum can depend on a decreased release of nitric oxide (NO) from nitrergic nerves and endothelium.
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- 2008
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18. Kikuchi-Fujimoto Disease: analysis of 244 cases.
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Kucukardali Y, Solmazgul E, Kunter E, Oncul O, Yildirim S, and Kaplan M
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- Adolescent, Adult, Asia, Child, Child, Preschool, Diagnosis, Differential, Europe, Female, Humans, Infant, Japan, Lupus Erythematosus, Systemic pathology, Male, Medical Records, Middle Aged, Spain, Taiwan, Histiocytic Necrotizing Lymphadenitis pathology
- Abstract
Kikuchi-Fujimoto Disease (KFD) was first described in Japan in 1972. The disease frequently mimics tuberculous lymphadenitis, malign lymphoma, and many other benign and malignant conditions. To our knowledge, there is no previous study comparing the clinical and laboratory characteristics of patients from different geographical parts of the world. We searched literature records beginning from 1991 and analyzed epidemiological, clinical, and laboratory data of 244 patients (including cases diagnosed in our institution) reported in 181 publications. Of the 244 cases, 33% were male and 77% were female. Mean age was 25 (1-64) and 70% was younger than 30. Most of the cases were reported from Taiwan (36%), USA (6.6%), and Spain (6.3%). Fever (35%), fatigue (7%) and joint pain (7%) were the most frequent symptoms, while lymphadenomegaly (100%), erythematous rashes (10%), arthritis (5%), hepatosplenomegaly (3%), leucopenia (43%), high erythrocyte sedimentation rate (40%), and anemia (23%) being the most common findings. KFD was associated with SLE (32 cases), non-infectious inflammatory diseases (24 cases), and viral infections (17 cases). SLE was more frequent in cases from Asia than Europe (28 and 9%, respectively). The disease was self-limiting in 156 (64%) and corticosteroid treatment was necessary in 16 (16%) of the cases. The mortality rate was 2.1%. Early diagnosis is crucial as the clinical and laboratory presentation generally imitates situations needing lengthy and costly diagnostic and therapeutic interventions. Additionally, association with SLE needs further investigation.
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- 2007
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19. The effect of zinc supplementation on ghrelin-immunoreactive cells and lipid parameters in gastrointestinal tissue of streptozotocin-induced female diabetic rats.
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Bolkent S, Yanardag R, Bolkent S, Mutlu O, Yildirim S, Kangawa K, Minegishi Y, and Suzuki H
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- Analysis of Variance, Animals, Blood Glucose metabolism, Body Weight drug effects, Cholesterol blood, Cholesterol, HDL blood, Diabetes Mellitus, Experimental blood, Diabetes Mellitus, Experimental physiopathology, Dietary Supplements, Female, Gastrointestinal Tract cytology, Gastrointestinal Tract metabolism, Ghrelin, Immunohistochemistry, Lipids blood, Peptide Hormones analysis, Rats, Zinc administration & dosage, Diabetes Mellitus, Experimental metabolism, Gastrointestinal Tract drug effects, Lipid Metabolism drug effects, Peptide Hormones metabolism, Zinc pharmacology
- Abstract
Zinc is an essential nutrient with a wide range of functions and closely involved in a variety of enzymatic processes of importance in glucose, protein and lipid metabolism. Ghrelin is the endogenous ligand of the G protein coupled growth hormone secretagogue receptor. The regulatory mechanism that explain the biosynthesis and secretion of ghrelin in the gastrointestinal tract has not been clarified. This study was undertaken to examine the effect of zinc supplementation on the streptozotocin (STZ)-induced diabetic rats, which exhibits ghrelin production and secretion, and lipid metabolism on the gastrointestinal tract. The animals were divided into four groups. Group I: Non-diabetic untreated animals. Group II: Zinc-treated non-diabetic rats. Group III: STZ-induced diabetic untreated animals. Group IV: Zinc-treated diabetic animals. Zinc sulfate was given to some of the experimental animals by gavage at a dose of 100 mg/kg body weight every day for 60 days. In the zinc-treated diabetic group, the blood glucose levels decreased and body weight increased as compared to the diabetic untreated group. Zinc supplementation to STZ-diabetic rats revealed the protective effect of zinc on lipids parameters such as total lipid, cholesterol, HDL-cholesterol and atherogenic index. There is no statistically change in ghrelin-immunoreactive cells in gastrointestinal tissue. But, it has found that zinc supplementation caused a significant reduction in densities of ghrelin-producing cells of fundic mucosa of zinc-treated diabetic animals as compared to untreated, non-diabetic controls. Zinc supplementation may contribute to prevent some complications of diabetic rats, biochemically.
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- 2006
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20. Colonic interposition vs. gastric pull-up after total esophagectomy.
- Author
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Yildirim S, Köksal H, Celayir F, Erdem L, Oner M, and Baykan A
- Subjects
- Adult, Aged, Aged, 80 and over, Colon blood supply, Esophagus blood supply, Female, Follow-Up Studies, Humans, Male, Middle Aged, Patient Satisfaction, Plastic Surgery Procedures, Stomach blood supply, Colon transplantation, Esophagectomy, Esophagus surgery, Postoperative Complications, Stomach transplantation
- Abstract
Gastric pull-up is the most frequent reconstruction after esophagectomy. In this report we aimed to compare gastric pull-up with colonic interposition in terms of graft function and patient satisfaction. Of 62 patients undergoing esophagectomy, reconstruction was performed by colonic interposition in 11 and gastric pull-up in 51 (without pyloric drainage in 44 and with pyloric drainage in 7). All esophagectomies were performed transhiatally. Patient follow-up ranged from 6 to 132 months (median 14 months). Follow-up examinations were performed 1, 9, 15, and 24 months postoperatively. The following factors were evaluated: time to the start of oral liquid and solid nutrients without vomiting, frequency of regurgitation, presence of pillow staining (night regurgitation), postprandial fullness, and degree of satisfaction during and after eating compared between groups undergoing colonic interposition and gastric pull-up with or without pyloric drainage. Among patients undergoing gastric pull-up, regurgitation was observed in 22% to 27% during follow-up. None of the patients with colonic interposition had reflux or regurgitation. Twenty-five percent of patients with gastric pull-up without drainage and 66% of patients with gastric pull-up plus drainage had reflux esophagitis at 15 months. No esophagitis was observed in patients with colonic interposition during the same period. Overall satisfaction was superior in patients undergoing colonic interposition followed by gastric pull-up with no drainage. Colonic interposition after esophageal resection is a viable option. Our study suggests that function of the replacement is better in this group of patients.
- Published
- 2004
- Full Text
- View/download PDF
21. Laparoscopic resection of patent omphalomesenteric duct in an adult.
- Author
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Nursal TZ, Yildirim S, Tarim A, and Noyan T
- Subjects
- Adult, Humans, Male, Surgical Staplers, Suture Techniques, Laparoscopy methods, Vitelline Duct abnormalities, Vitelline Duct surgery
- Abstract
The omphalomesenteric duct is the embryonic structure connecting the yolk sac to the primitive gut that disappears at 8 to 9 weeks of gestation. Failure of this duct to involute results in various anomalies. Failure of complete closure at different stages results in various anomalies, which occur in approximately 2% of the population. However, complete patency of omphalomesenteric duct is rare, reportedly occurring in approximately 15% omphalomesenteric duct anomalies. Adult presentations are extremely rare. We report the case of a 44-year-old man with a patent omphalomesenteric duct (POMD). He was admitted with a foul-smelling discharge from the umbilicus that he had experienced for 5 years. The condition had been interpreted as an umbilical granuloma at other centers, and multiple unsuccessful sessions of cauterization with silver-nitrate bar had been performed. At laparoscopy through three ports, the POMD was resected with the aid of a laparoscopic linear stapler. To our knowledge, this is the first adult case of POMD resected laparoscopically. The pitfalls of this diagnosis in the adult and the technique of laparoscopic resection is discussed in light of the available literature.
- Published
- 2002
- Full Text
- View/download PDF
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