124 results on '"OZTÜRK, G"'
Search Results
2. Sarcopenia assessment project in the nursing homes in Turkey
- Author
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Halil, M, Ulger, Z, Varlı, M, Döventaş, A, Oztürk, G B, Kuyumcu, M E, Yavuz, B B, Yesil, Y, Tufan, F, Cankurtaran, M, Saka, B, Sahin, S, Curgunlu, A, Tekin, N, Akçiçek, F, Karan, M A, Atlı, T, Beger, T, Erdinçler, D S, and Arıoğul, S
- Published
- 2014
- Full Text
- View/download PDF
3. Development of a New Incontinence Containment Product and an Investigation of Its Effect on Perineal Dermatitis in Patients With Fecal Incontinence: A Pilot Study in Women
- Author
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Leblebícíglu H., Khorshid L., Öndogan Z., Oztürk G., and Ege Üniversitesi
- Abstract
EgeUn###, Research related to the design and development of new incontinence containment products for women is scarce. PURPOSE: The purpose of this 2-part study was to 1) develop a new incontinence containment product for fecal incontinence and 2) examine the effect of this new product on the occurrence of incontinence-associated dermatitis (IAD). METHODS: In part 1, a new incontinence containment product was designed, developed, and trialed among 10 healthy female volunteers. The product was comprised of a double layer of polypropylene nonwoven fabric and 100% cotton interlock fabric with a 3-ply 100% cotton interlock fabric added into the perianal section. Participants wore the product for 8 hours and were asked to defecate into the product and evaluate its comfort, ability to contain liquids and protect privacy, any personal allergic reaction, and air permeability. In part 2, after any product modifications, 12 bedridden women treated in the neurology unit of a hospital in western Turkey who had an indwelling urinary catheter and fecal incontinence and who did not have diabetes mellitus, a darkly pigmented area in the perianal area, pressure injury, or erythema were randomized to 2 groups (study product and control, a premium adult diaper) and monitored for 8 days for the development and severity of perineal dermatitis (scored from 0 [no erythema] to 4 [broken, abraded skin]) using a skin assessment tool. Any type of erythema was considered IAD. Skin care (cleansing with a washcloth and water) was provided daily and after each defecation to all study participants. Data were collected via paper-and-pencil completion of the perineal skin integrity assessment and patient observation forms and entered into and analyzed by a computerized statistical program. Fisher's exact test and the chi-squared test were used to analyze the difference in IAD incidence and severity between the 2 groups, and the Mann Whitney U test was used to detect differences in the number and consistency of defecations. RESULTS: No statistically significant differences were noted among the characteristics of the 12 participants (6 in each group) except for age; patients in the study product group were significantly older (70.66 ± 10.36 vs 52.20 ± 16.78 years; P
- Published
- 2019
4. Bir Nöron Hasar Modeli Olarak Laser Mikrodiseksiyon
- Author
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Yenidünya, Elçin, Kaval Oğuz, Elif, and OZTÜRK, G
- Published
- 2010
5. JC1 Boyası İle Canlı Hücrelerde Apoptoz Sürecinin Gözlenmesi
- Author
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Yenidünya, Elçin, OZTÜRK, G, and Kaval Oğuz, Elif
- Published
- 2010
6. Ölürken Öldürmek: Kültürde Transnöronal Dejenerasyon
- Author
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Yenidünya, Elçin, ERDOĞAN, Emrah, CENGIZ, N, OZTÜRK, G, Kaval Oğuz, Elif, and Him, Aydın
- Published
- 2010
7. Sinir Rejenerasyonu İçin Bir in vitro Şartlandırma Modeli. 18-22 Nisan 2009
- Author
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ERDOĞAN, Emrah, Kaval Oğuz, Elif, OZTÜRK, G, and CENGIZ, N
- Published
- 2009
8. Şartlandırma Hasarı Etkisi ve Lösemi İnhibe Edici Faktör
- Author
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CENGIZ, N, Kaval Oğuz, Elif, ERDOĞAN, Emrah, and OZTÜRK, G
- Published
- 2009
9. Effects of topical mitomycin and trimetazidine on myringosclerosis
- Author
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YUCA, K, OZTÜRK, G, DÜLGER, H, KIRIS, M, ÇANKAYA, Hakan, KÖSEM, M, Kiroglu, F, and ERDOGAN, Emrah
- Published
- 2008
10. The Effects of Proximal Branches on the Degeneration of the Neurites of Cultured Dorsal Root Ganglion Neurons.. 27 July-1 August 2009. Kyoto/JAPAN
- Author
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Kaval Oğuz, Elif, CENGIZ, N, ERDOĞAN, Emrah, Him, Aydın, and OZTÜRK, G
- Published
- 2008
11. Kaval Oğuz, E., Cengiz, N., Öztürk, G. 2008. Sinir Rejenerasyonunda Şartlandırma Hasarı Etkisi ve Mekanizmasının Araştırılmasında Kullanılan Metotlar
- Author
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Kaval Oğuz, Elif, OZTÜRK, G, and CENGIZ, N
- Published
- 2008
12. The Effect of Temperature on the Survival of Cultured Primary Sensory Neurons After Neurite Transection
- Author
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Kaval Oğuz, Elif, ERDOĞAN, Emrah, Him, Aydın, CENGIZ, N, and OZTÜRK, G
- Published
- 2008
13. Nerve Growth Factor (NGF) Rescues Mouse Primary Sensory Neurons Following Neurite Transection in vitro.. 12-16 July 2008
- Author
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ERDOĞAN, Emrah, Kaval Oğuz, Elif, OZTÜRK, G, CENGIZ, N, and HIM, A
- Published
- 2008
14. Histolojide Laser Mikrodiseksiyon Uygulamaları.27-30 Haziran 2006
- Author
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ERDOĞAN, Emrah, CENGIZ, N, OZTÜRK, G, and Kaval Oğuz, Elif
- Published
- 2006
15. The effects of Endogeneous Opioids on the Neurons İnjured in vitro.. 10-14 April 2006
- Author
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Kaval Oğuz, Elif, CENGIZ, N, OZTÜRK, G, and Öztürk, Mustafa
- Published
- 2006
16. A novel amperometric biosensor based on artichoke (Cynara scolymus L.) tissue homogenate immobilized in gelatin for hydrogen peroxide detection
- Author
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Erhan Dinçkaya, F.N. Ertas, Oztürk G, Erol Akyilmaz, and Tural H
- Subjects
food.ingredient ,Biomedical Engineering ,Biosensing Techniques ,Gelatin ,chemistry.chemical_compound ,food ,Cynara scolymus ,Animals ,Hydrogen peroxide ,Polytetrafluoroethylene ,Chromatography ,biology ,Cell-Free System ,Chemistry ,Membranes, Artificial ,Hydrogen Peroxide ,Amperometry ,Milk ,Biochemistry ,Catalase ,Electrode ,biology.protein ,Cattle ,Glutaraldehyde ,Biosensor ,Biotechnology - Abstract
A biosensor for specific determination of hydrogen peroxide was developed by using homogenized artichoke (Cynara scolymus L.) tissue in combination with a dissolved oxygen probe and applied in determination of hydrogen peroxide in milk samples. Artichoke tissue, which has catalase activity, was immobilized with gelatine by means of glutaraldehyde and fixed on a pretreated teflon membrane. The electrode response was maximum when 0.05 M phosphate buffer was used at pH 7.0 and at 30 degrees C. Upon addition of hydrogen peroxide, the electrode gives a linear response in a concentration range of 5.0-50 x 10(-5) M with a response time of 3 min. The method was also applied to the determination of hydrogen peroxide in milk samples.
- Published
- 2004
17. 15 The examination of the daily port use behaviours of cancer patients with implantable catheter port
- Author
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Ugur, O., primary, Akdeniz, A., additional, Arslan, D., additional, Küçükkurt, H., additional, and Oztürk, G., additional
- Published
- 2014
- Full Text
- View/download PDF
18. Vitamin C decreases intracellular calcium level in human lymphoid cells
- Author
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Oztürk G, Cw, Mulholland, and Bernie Hannigan
- Subjects
Intracellular Fluid ,Ionophores ,Humans ,Calcium ,Ascorbic Acid ,Lymphocytes ,Antioxidants ,Calcimycin ,Cell Line, Transformed - Abstract
Human lymphocytes have low levels of many antioxidant enzymes however they are know to concentrate vitamin C. Cell injury, including oxidative stress effects, is associated with calcium influx so the influence of vitamin C on the maintenance of calcium levels in leukocytes was studied. Incubation of Molt-3 human lymphoblastoid cells with physiologically relevant concentrations of vitamin C and the calcium ionophore A23187 reversed the calcium influx and increased nuclear protein level associated with the ionophore alone. It is concluded that intracellular vitamin C can inhibit calcium influx into leukocytes so helping to minimise cell damage.
- Published
- 2001
19. A viable residual spinal hydatid cyst cured with albendazole. Case report
- Author
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Edali N, Baykaner Mk, Tali T, Doğulu F, and Oztürk G
- Subjects
medicine.medical_specialty ,Adolescent ,Albendazole ,Thoracic Vertebrae ,Central nervous system disease ,Spinal cord compression ,Echinococcosis ,parasitic diseases ,medicine ,Back pain ,Mediastinal Diseases ,Humans ,Cyst ,Anthelmintics ,Muscle Weakness ,business.industry ,Mediastinum ,General Medicine ,medicine.disease ,Spinal cord ,Surgery ,medicine.anatomical_structure ,Back Pain ,Female ,Spinal Diseases ,medicine.symptom ,business ,Spinal Cord Compression ,medicine.drug ,Follow-Up Studies - Abstract
✓ Spinal hydatid disease is a rare entity that frequently yields to severe, acute-onset neurological deficits. Although the gold standard treatment is total surgical removal of the cysts without inducing any spillage, it may not be possible to perform this in patients with multiple and fragile cysts. In such cases, the neural structures should be adequately decompressed and albendazole should be administered promptly. The authors describe the case of a 13-year-old girl who was admitted with a history of back pain and acute-onset lower-extremity weakness. Magnetic resonance imaging scans demonstrated severe spinal cord compression caused by multiple cysts involving T-4 and the mediastinum. The patient underwent surgery, and the cysts were removed, except for one cyst that was hardly exposed. Following histopathological confirmation of spinal hydatid disease, she was treated with albendazole for 1 year. One year postoperatively, the residual cyst had gradually shrunk and had almost disappeared. Although a single case is not sufficiently promising, we believe that administration of albendazole is efficient to prevent recurrences in cases in which it is not possible to obtain total removal of the cysts without inducing spillage.
- Published
- 2000
20. BONE MINERAL DENSITY AND BONE TURNOVER IN PREMENOPAUSAL WOMEN WITH MILD HYPERPROLACTINEMIA.
- Author
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Oztürk, G. F., Celik, O., Kadioglu, A., and Kadioglu, P.
- Subjects
- *
BONE density , *HYPERPROLACTINEMIA , *DUAL-energy X-ray absorptiometry , *PROLACTINOMA , *MEDICAL schools , *OSTEOCALCIN , *LUMBAR vertebrae , *COLLAGEN - Abstract
Context. Bone mineral density (BMD) loss and progressive bone loss have been detected in patients with untreated hyperprolactinemia. It is unclear in patients with mild hyperprolactinemia. Objective. The aim of the study was to evaluate bone metabolism through bone mineral density by using dual energy X-ray absorptiometry (DXA) and bone turnover markers in premenopausal women with prolactinoma. Design, Subjects and Methods. Twenty five patients newly diagnosed with prolactinoma and treated surgically and/or medically, but whose prolactin levels were above the normal limits (PRL > 25 μg/L) and 25 healthy controls were included in the study, which was conducted at the Cerrahpasa Medical School, Division of Endocrinology and Metabolism outpatient clinic. Bone mineral density was measured using the DXA method. Bone turn-over markers such as alkaline phosphatase (ALP), osteocalcin, Type I collagen Ntelopeptide (NTX) and Type I collagen CTelopeptide (CTX) levels were determined. Results. The only significant difference in bone density (p=0.02) was in L4 lumbar vertebrae. There were no significant differences between the patient and the control groups in ALP, osteocalcin, NTX, and CTX levels. Conclusion. There were no significant differences between the patient and the control groups in bone mineral density and bone turnover markers, except in the L4 lumbar vertebrae. [ABSTRACT FROM AUTHOR]
- Published
- 2012
- Full Text
- View/download PDF
21. Age-related changes in tissue and plasma zinc levels: modulation by exogenously administered melatonin [corrected] [published erratum appears in EXP AGING RES 2009 Jan-Mar;152].
- Author
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Oztürk G, Akbulut KG, and Afrasyap L
- Abstract
Melatonin (MEL) is synthesized mainly in the pineal gland and derived from 5-hydroxytryptophan (5-HTP). Zinc (Zn) is one of the most important trace elements in the body. Zn and MEL levels are changed with aging. The aim of this study was to investigate the age-related changes of tissue and plasma Zn levels and effect of MEL administration on these parameters. Male wistar rats received for 3 weeks subcutaneous injection of MEL (10 mg/kg). Kidney and pancreas Zn levels in old rats were significantly lower than middle-aged group. Spleen, small intestine, and plasma Zn levels were not different in middle-aged and old rats. On the other hand, MEL treatment increased Zn levels of small intestine and plasma in middle-aged rats. However, kidney, spleen, and pancreas Zn levels were unaffected by MEL treatment. [ABSTRACT FROM AUTHOR]
- Published
- 2008
- Full Text
- View/download PDF
22. Effects of urtica dioica extract on experimental acute pancreatitis model in rats
- Author
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Delibasi T, Caner S, Yüksel O, Ismail Oskay Kaya, Ucar E, Coban S, Oztürk G, Ginis Z, Albayrak A, Büyükcam F, Ekiz F, Altinbas A, Aktas B, Basar O, and Yilmaz B
23. Coagulopathy in Gaucher disease.
- Author
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Oztürk, G, Koçak, U, Gürsel, T, and Ezgü, F S
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- 1998
- Full Text
- View/download PDF
24. Oral megadose methylprednisolone therapy in a patient with chronic progressive multiple sclerosis.
- Author
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Gücüyener, Kwilcim, Hasanoğlu, Alev, Tunaoğlu, Sedef, Öztürk, Gülyüz, Gücüyener, K, Hasanoğlu, A, Tunaoğlu, S, and Oztürk, G
- Published
- 1993
- Full Text
- View/download PDF
25. Development of a New Incontinence Containment Product and an Investigation of Its Effect on Perineal Dermatitis in Patients With Fecal Incontinence: A Pilot Study in Women.
- Author
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Leblebícíglu H, Khorshid L, Öndogan Z, and Oztürk G
- Subjects
- Adult, Aged, Chi-Square Distribution, Dermatitis epidemiology, Dermatitis nursing, Female, Humans, Incidence, Middle Aged, Perineum abnormalities, Perineum physiopathology, Pilot Projects, Statistics, Nonparametric, Surgical Stomas adverse effects, Surgical Stomas standards, Surveys and Questionnaires, Turkey, Dermatitis etiology, Equipment Design standards, Fecal Incontinence nursing
- Abstract
Research related to the design and development of new incontinence containment products for women is scarce., Purpose: The purpose of this 2-part study was to 1) develop a new incontinence containment product for fecal incontinence and 2) examine the effect of this new product on the occurrence of incontinence-associated dermatitis (IAD)., Methods: In part 1, a new incontinence containment product was designed, developed, and trialed among 10 healthy female volunteers. The product was comprised of a double layer of polypropylene nonwoven fabric and 100% cotton interlock fabric with a 3-ply 100% cotton interlock fabric added into the perianal section. Participants wore the product for 8 hours and were asked to defecate into the product and evaluate its comfort, ability to contain liquids and protect privacy, any personal allergic reaction, and air permeability. In part 2, after any product modifications, 12 bedridden women treated in the neurology unit of a hospital in western Turkey who had an indwelling urinary catheter and fecal incontinence and who did not have diabetes mellitus, a darkly pigmented area in the perianal area, pressure injury, or erythema were randomized to 2 groups (study product and control, a premium adult diaper) and monitored for 8 days for the development and severity of perineal dermatitis (scored from 0 [no erythema] to 4 [broken, abraded skin]) using a skin assessment tool. Any type of erythema was considered IAD. Skin care (cleansing with a washcloth and water) was provided daily and after each defecation to all study participants. Data were collected via paper-and-pencil completion of the perineal skin integrity assessment and patient observation forms and entered into and analyzed by a computerized statistical program. Fisher's exact test and the chi-squared test were used to analyze the difference in IAD incidence and severity between the 2 groups, and the Mann Whitney U test was used to detect differences in the number and consistency of defecations., Results: No statistically significant differences were noted among the characteristics of the 12 participants (6 in each group) except for age; patients in the study product group were significantly older (70.66 ± 10.36 vs 52.20 ± 16.78 years; P <.05. Four (4) patients in the study group exhibited 13 areas of perineal dermatitis (degree 1 = 6 areas; degree 2 = 6 areas; degree 3 = 1 area; and degree 4 = 0); 1 patient in the control group had 4 areas with degree 1., Conclusion: This prototype product is not sufficient to be used in clinical practice in patients with fecal incontinence, but further study in a larger population is warranted..
- Published
- 2019
26. Clofarabine experience in children with multi-relapsed acute leukemia.
- Author
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Karakaş Z, Koç BS, Karaman S, Anak S, Unüvar A, Uysalol E, Devecioğlu O, Ağaoğlu L, and Oztürk G
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- 2014
- Full Text
- View/download PDF
27. The utility of thrombopoietin in predicting liver fibrosis in chronic hepatitis B.
- Author
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Yilmaz B, Basar O, Altınbas A, Ekiz F, Aktas B, Oztürk G, Ginis Z, Coban S, Ucar E, Erarslan E, Coskun Y, Yüksel I, Tuna Y, and Yüksel O
- Abstract
Many noninvasive serum markers have been studied to determine the liver fibrosis score (LFS). In this study, we aimed to investigate the association between thrombopoietin (TPO) levels and the stage of liver fibrosis in patients with chronic hepatitis B (CHB). Seventy-seven patients (64 active and 13 inactive) with CHB were included in this cross-sectional study. Patients were divided into three groups: In group 1, patients with mild or no fibrosis (F0, F1); in group 2, patients with significant fibrosis (F2-F4); and in group 3, inactive CHB carriers. Digital patient records were used to access pre-treatment laboratory findings including HBV DNA, HBeAg, ALT, AST, total bilirubin, PLT, albumin, INR. Liver biopsies were examined by experienced pathologists in our hospital who were blinded to the data of the patients. Serum TPO levels were measured using commercial ELISA kit. Serum TPO levels were significantly lower in patients with active CHB compared with the inactive carriers (528 vs 687.1 p=0.003). There was no statistically significant difference in TPO levels between the patients with and patients without significant fibrosis (568.9 vs 459.8 p=0.367). Correlation analysis with respect to ALT, AST, TPO, HBV-DNA level, platelet count, histological activity index (HAI) and liver fibrosis score was performed. TPO was only weakly positively correlated with AST, ALT and HBV-DNA levels (r=0.269 p=0.018; r=0.341 p=0.002; r=0.308 p=0.006; respectively) and no correlation in TPO with LFS and HAI was found (r=0.140 p=0.270, r=0.162 p=0.201; respectively). TPO was not associated with significant fibrosis (p=0.270). In conclusion, TPO levels were decreased in active CHB patients compared with inactive carriers but there was no correlation between TPO levels and the stage of fibrosis in active CHB.
- Published
- 2014
28. Effects of urtica dioica extract on experimental acute pancreatitis model in rats.
- Author
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Yilmaz B, Basar O, Aktas B, Altinbas A, Ekiz F, Büyükcam F, Albayrak A, Ginis Z, Oztürk G, Coban S, Ucar E, Kaya O, Yüksel O, Caner S, and Delibasi T
- Abstract
Acute pancreatitis is the acute inflammation of pancreas and peripancreatic tissues, and distant organs are also affected. The aim of this study was to investigate the effect of Urtica dioica extract (UDE) treatment on cerulein induced acute pancreatitis in rats. Twenty-one Wistar Albino rats were divided into three groups: Control, Pancreatitis, and UDE treatment group. In the control group no procedures were performed. In the pancreatitis and treatment groups, pancreatitis was induced with intraperitoneal injection of cerulein, followed by intraperitoneal injection of 1 ml saline (pancreatitis group) and 1 ml 5.2% UDE (treatment group). Pancreatic tissues were examined histopathologically. Pro-inflammatory cytokines (tumor necrosis factor-α), amylase and markers of apoptosis (M30, M65) were also measured in blood samples. Immunohistochemical staining was performed with Caspase-3 antibody. Histopathological findings in the UDE treatment group were less severe than in the pancreatitis group (5.7 vs 11.7, p = 0.010). TNF-α levels were not statistically different between treated and control groups (63.3 vs. 57.2, p = 0.141). UDE treatment was associated with less apoptosis [determined by M30, caspase-3 index (%)], (1.769 vs. 0.288, p = 0.056; 3% vs. 2.2%, p = 0.224; respectively). UDE treatment of pancreatitis merits further study.
- Published
- 2014
29. Predictors of mortality in childhood burns: an 8-year review.
- Author
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Saritas A, Cakir ZG, Akçay MN, Kandis H, Ersunan G, Oztürk G, and Aslan S
- Subjects
- Adolescent, Age Distribution, Body Surface Area, Burns epidemiology, Child, Child, Preschool, Female, Humans, Infant, Male, Retrospective Studies, Turkey, Burns mortality
- Abstract
This study aims to analyze the epidemiological characteristics and predictors of mortality from burn injuries in childhood patients admitted to our hospital during an eight-year period. The medical records of acute childhood burn patients were reviewed retrospectively. All variables thought to be associated with mortality were entered in a multiple binary logistic regression model (method = stepwise). The magnitude of risk was measured by the odds ratio, and the 95% confidence interval was estimated. A total of 2269 acute childhood burn patients were admitted during the study period. A total of 86 (3.8%) children died due to burn injuries. Deaths were seen 1.849 times more in males than in females. According to the 1%-10% total body surface area (TBSA) burned group, mortality occurred 121.116 times more in the >41% TBSA burned group. Most burn injuries can be avoided by keeping children away from hazardous and dangerous environments. Also, requiring a multidisciplinary management in these patients, quality of care services given by physicians and nurses certainly will create a positive impact on patients' outcomes.
- Published
- 2014
- Full Text
- View/download PDF
30. Incidental parathyroidectomy during thyroid surgery: risk factors, incidence, and outcomes.
- Author
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Ozoğul B, Nuran Akçay M, Kisaoğlu A, Atamanalp SS, Oztürk G, and Aydinli B
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Female, Humans, Hypocalcemia etiology, Incidence, Male, Middle Aged, Risk Factors, Treatment Outcome, Parathyroidectomy, Thyroidectomy adverse effects
- Abstract
Aim: Incidental removal of the parathyroid glands is common in some cases. In this trial, we investigated the risk factors, incidence, and outcomes associated with incidental excision of the parathyroid glands during thyroid surgery., Materials and Methods: The records of patients who had undergone thyroid surgery in our department between January 2006 and December 2011 were retrospectively evaluated., Results: A total of 801 patients were enrolled in the trial. The number of incidental parathyroidectomies was determined as 19 (2.3%). Statistical evaluation revealed that sex (P > 0.05) and type of surgical operation (P > 0.05) were not associated with a significant impact on incidental parathyroidectomies. However, the rate of incidental parathyroidectomies was determined to be statistically significantly high among patients with malignant conditions (P < 0.05). Hypocalcemia was observed to be statistically significant in patients with an incidental parathyroidectomy (P < 0.05)., Conclusion: Incidental parathyroidectomy is a rare condition in centers specializing in endocrine surgery. Furthermore, the parathyroid glands should always be explored during dissection in patients with malignancies. The clinical manifestation of hypocalcemia is a common condition observed after incidental parathyroidectomy.
- Published
- 2014
31. Serum m 30 levels reflects ulcerative colitis activity.
- Author
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Aktaş B, Altınbaş A, Başar O, Yılmaz B, Ekiz F, Giniş Z, Oztürk G, Coban S, Tuna Y, Uçar E, Erarslan E, and Yüksel O
- Subjects
- Adult, Case-Control Studies, Enzyme-Linked Immunosorbent Assay, Female, Follow-Up Studies, Humans, Male, Proctitis blood, Proctitis diagnosis, Prognosis, Biomarkers blood, Colitis, Ulcerative blood, Colitis, Ulcerative diagnosis, Keratin-18 blood, Peptide Fragments blood
- Abstract
Background: Apoptosis plays a role in epithelial and mucosal injury, which is 1 of the mechanisms in the pathogenesis of ulcerative colitis. Apoptotic cells increase as a result of injured mucosa in ulcerative colitis and serum M 30 levels increase in epithelial cell apoptosis. In this study, we aimed to evaluate the relation between M 30 serum levels and ulcerative colitis activity., Methods: Eighty patients with ulcerative colitis and 40 healthy controls were enrolled into the study. The patient group consisted of 31 extensive colitis, 30 left-sided colitis, and 19 proctitis. The activity of ulcerative colitis was determined with clinical and endoscopic findings. Serum M 30 levels, acute phase reactants, and biochemical tests were analyzed in all subjects., Results: Serum M 30 levels in patients with active ulcerative colitis were significantly higher when compared with the healthy controls (165.6 ± 60.6 and 129.6 ± 37.4; P = 0.003). Serum M 30 levels in active left-sided colitis patients was significantly higher when compared with patients in remission phase (180.6 ± 58.5, 141.5 ± 35.4; P = 0.044). When we exclude patients with ulcerative proctitis, M 30 levels in active ulcerative colitis patients were significantly higher than that the patients in remission phase (174.0 ± 63.5, 135.0 ± 29.9; P = 0.017)., Conclusions: We found that M 30 levels increase in patients with active ulcerative colitis. Our findings support the role of apoptosis demonstrated by serum M 30 levels in the pathogenesis of active ulcerative colitis.
- Published
- 2013
- Full Text
- View/download PDF
32. Tuning photoinduced intramolecular electron transfer by electron accepting and donating substituents in oxazolones.
- Author
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Oztürk G, Karabıyık H, Aygün M, Alp S, and Ozçelik S
- Subjects
- Electron Transport, Models, Molecular, Molecular Conformation, Spectrometry, Fluorescence, Oxazolone chemistry, Photochemical Processes
- Abstract
The solvatochromic and spectral properties of oxazolone derivatives in various solvents were reported. Fluorescence spectra clearly showed positive and negative solvatochromism depending on substituents. The solvatochromic plots and quantum chemical computations at DFT-B3LYP/6-31 + G(d,p) level were used to assess dipole moment changes between the ground and the first excited singlet-states. The electron accepting nitro substituent at the para-position increased the π-electron mobility, however, the 3,5-dinitro substituent decreased the π-electron mobility as a result of inverse accumulation of the electronic density as compared with that of its ground state. Experimental and computational studies proved that the photoinduced intramolecular electron transfer (PIET) is responsible for the observed solvatochromic effects. We demonstrate that PIET can be finely tailored by the position of the electron accepting and donating substituents in the phenyl ring of the oxazolone derivatives. We propose that the photoactive CPO derivatives are new molecular class of conjugated push-pull structures using azlactone moiety as the π-conjugated linker and may find applications in photovoltaic cells and light emitting diodes.
- Published
- 2013
- Full Text
- View/download PDF
33. Protective effect of melatonin and 1,25-dihydroxyvitamin D3 on renal ischemia-reperfusion injury in rats.
- Author
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Sezgin G, Oztürk G, Güney S, Sinanoğlu O, and Tunçdemir M
- Subjects
- Acute Kidney Injury metabolism, Acute Kidney Injury pathology, Animals, Antioxidants metabolism, Drug Evaluation, Preclinical, Kidney metabolism, Kidney pathology, Male, Rats, Rats, Wistar, Reperfusion Injury metabolism, Reperfusion Injury pathology, Acute Kidney Injury prevention & control, Antioxidants therapeutic use, Calcitriol therapeutic use, Melatonin therapeutic use, Reperfusion Injury prevention & control
- Abstract
Ischemia-reperfusion (I/R) injury induces the generation of reactive oxygen species (ROS) which affect many organs. This study was designed to investigate the roles of melatonin and 1,25-dihydroxyvitamin D3 (VD3) on renal I/R injury. Thirty male Wistar albino rats were divided into five groups: group 1, control; group 2, right nephrectomy (RN) + I/R in the contralateral kidney; group 3, melatonin + RN + I/R; group 4, VD3 + RN + I/R; and group 5, melatonin + VD3 + RN + I/R. Melatonin (10 mg/kg), VD3 (0.5 μg/kg), and melatonin plus VD3 were injected intraperitoneally for 7 days before renal I/R. After 7 days, right nephrectomy was initially performed and left renal artery was clamped for 45 min. After 45-min reperfusion, the serum and kidney tissue samples were obtained for assays. Melatonin and VD3 had an ameliorative effect on biochemical parameters such as serum creatinine (SCr) and blood urea nitrogen (BUN). Renal tissue malondialdehyde (MDA), glutathione (GSH), nitric oxide (NO) levels, and superoxide dismutase (SOD) activity were determined. Renal I/R decreased the kidney tissue GSH levels and SOD activity and increased the NO levels as compared with control group. However, melatonin and VD3 and melatonin plus VD3 treatment significantly increased the tissue GSH levels and SOD activity and decreased the NO levels compared with those of I/R group. Meanwhile, MDA levels were not different between the control and I/R groups. But, MDA levels decreased in all treated groups compared to I/R and control groups. These data support that melatonin and VD3 have beneficial effects on renal injury.
- Published
- 2013
- Full Text
- View/download PDF
34. Intrapartum sacral stress fracture due to pregnancy-related osteoporosis: a case report.
- Author
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Oztürk G, Külcü DG, and Aydoğ E
- Subjects
- Adult, Diagnosis, Differential, Female, Fractures, Stress etiology, Humans, Low Back Pain etiology, Magnetic Resonance Imaging, Pregnancy, Pregnancy Complications etiology, Sacrum pathology, Fractures, Stress diagnosis, Low Back Pain diagnosis, Osteoporosis complications, Osteoporotic Fractures diagnosis, Pregnancy Complications diagnosis, Sacrum injuries
- Abstract
Introduction: Low back pain (LBP) and hip pain frequently occur during pregnancy and postpartum period. Although pelvic and mechanic lesions of the soft tissues are most responsible for the etiology, sacral fracture is also one of the rare causes., Case Report: A 32-year-old primigravid patient presented with LBP and right hip pain which started 3 days after vaginal delivery. Although direct radiographic examination was normal, magnetic resonance imaging of the sacrum revealed sacral stress fracture. Lumbar spine and femoral bone mineral density showed osteoporosis as a risk factor. There were no other risk factors such as trauma, excessive weight gain, and strenuous physical activity. It is considered that the patient had sacral fatigue and insufficiency fracture in intrapartum period. The patient's symptoms subsided in 3 months after physical therapy and rest., Conclusion: In conclusion, sacral fractures during pregnancy and postpartum period, especially resulting from childbirth, are very rare. To date, there are two cases in the literature. In cases who even do not have risk factors related to vaginal delivery such as high birth weight infant and the use of forceps, exc., sacral fracture should be considered in the differential diagnosis of LBP and hip pain started soon after child birth. Pregnancy-related osteoporosis may lead to fracture during vaginal delivery.
- Published
- 2013
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35. Consequences of neurite transection in vitro.
- Author
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Cengiz N, Oztürk G, Erdoğan E, Him A, and Oğuz EK
- Subjects
- Animals, Axotomy, Female, Ganglia, Spinal injuries, Lasers, Male, Mice, Mice, Inbred BALB C, Microdissection, Nerve Regeneration physiology, Neurites pathology
- Abstract
In order to quantify degenerative and regenerative changes and analyze the contribution of multiple factors to the outcome after neurite transection, we cultured adult mouse dorsal root ganglion neurons, and with a precise laser beam, we transected the nerve fibers they extended. Cell preparations were continuously visualized for 24 h with time-lapse microscopy. More distal cuts caused a more elongated field of degeneration, while thicker neurites degenerated faster than thinner ones. Transected neurites degenerated more if the uncut neurites of the same neuron simultaneously degenerated. If any of these uncut processes regenerated, the transected neurites underwent less degeneration. Regeneration of neurites was limited to distal cuts. Unipolar neurons had shorter regeneration than multipolar ones. Branching slowed the regenerative process, while simultaneous degeneration of uncut neurites increased it. Proximal lesions, small neuronal size, and extensive and rapid neurite degeneration were predictive of death of an injured neuron, which typically displayed necrotic rather than apoptotic form. In conclusion, this in vitro model proved useful in unmasking many new aspects and correlates of mechanically-induced neurite injury.
- Published
- 2012
- Full Text
- View/download PDF
36. Rituximab therapy for refractory autoimmune thrombocytopenia in patients with systemic lupus erythematosus.
- Author
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Atay D, Oztürk G, Anak S, Devecioğlu O, Unüvar A, Karakaş Z, and Ağaoğlu L
- Published
- 2012
- Full Text
- View/download PDF
37. Human herpes virus type 8-associated Kaposi sarcoma in a pediatric liver transplant recipient.
- Author
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Celtik C, Unüvar A, Aydoğan A, Gökçe S, Oztürk G, Güllüoğlu M, Yılmaz G, Türkoğlu S, Anak S, Sökücü S, and Durmaz O
- Subjects
- Antineoplastic Agents therapeutic use, Female, Humans, Immunosuppressive Agents adverse effects, Immunosuppressive Agents therapeutic use, Infant, Lymphoproliferative Disorders virology, Paclitaxel therapeutic use, Prognosis, Sirolimus therapeutic use, Treatment Outcome, Herpesvirus 8, Human genetics, Liver Failure complications, Liver Failure virology, Liver Transplantation adverse effects, Sarcoma, Kaposi complications, Sarcoma, Kaposi virology
- Abstract
Development of KS in pediatric liver transplant recipients is a rare entity and has dismal prognosis. Latent HHV-8 infection, immunosuppression, and genetic predisposition are possible etiological factors. Decreasing the dose or cessation of immunosuppressive drugs, switching to sirolimus with antiproliferative and antitumor properties, and different chemotherapeutic regimens are the current therapeutic strategies. We herein report a pediatric liver transplant recipient who developed generalized KS at post-transplant fifth month. The disease had an aggressive course despite the highly toxic chemotherapy. On the other hand, a prompt and durable response was provided by paclitaxel with tolerable side effects. The patient is now free of disease for at least 24 months and healthy with good graft function under sirolimus therapy as maintenance immunosuppression. Instead of highly toxic chemotherapy, paclitaxel can be used as therapeutic option in cases with generalized disease and in those who are unresponsive to conventional chemotherapy. However, new studies are needed to assess the efficacy of the paclitaxel therapy in KS in the liver transplant recipients., (© 2010 John Wiley & Sons A/S.)
- Published
- 2011
- Full Text
- View/download PDF
38. Gastric perforation caused by Strongyloides stercoralis: a case report.
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Oztürk G, Aydınlı B, Celebi F, and Gürsan N
- Subjects
- Abdominal Pain, Adult, Animals, Female, Humans, Peptic Ulcer Perforation surgery, Stomach Ulcer surgery, Strongyloidiasis diagnosis, Strongyloidiasis surgery, Peptic Ulcer Perforation parasitology, Stomach Ulcer parasitology, Strongyloides stercoralis isolation & purification, Strongyloidiasis complications
- Abstract
Strongyloidiasis is a parasitosis caused by the female nematode of the Strongyloides stercoralis. S. stercoralis causes a chronic infection that is asymptomatic in 50% of chronically infected patients, and it can also affect the stomach. Gastric involvement causes symptoms mostly mimicking gastritis. We report herein a case of gastric perforation in a 37-year-old woman, which was thought to be caused by S. stercoralis.
- Published
- 2011
39. Comparison of permissive hypotensive resuscitation, low-volume fluid resuscitation, and aggressive fluid resuscitation therapy approaches in an experimental uncontrolled hemorrhagic shock model.
- Author
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Durusu M, Eryilmaz M, Oztürk G, Menteş O, Ozer T, and Deniz T
- Subjects
- Animals, Disease Models, Animal, Fluid Therapy methods, Guinea Pigs, Hematocrit, Lactates blood, Male, Resuscitation methods, Survival Analysis, Shock, Hemorrhagic therapy
- Abstract
Background: In this study, we aimed to compare the efficacy of aggressive fluid resuscitation, low-volume fluid resuscitation and permissive hypotensive resuscitation in an experimental uncontrolled hemorrhagic shock model., Methods: Forty-four male Guinea pigs were used in the study in an experimental uncontrolled shock model. Guinea pigs were split into six groups including normovolemic-normotensive fluid treatment group, normovolemic-permissive hypotensive fluid treatment group, low-volume normotensive fluid treatment group, low-volume permissive hypotensive fluid treatment group, no treatment (n=6), and sham-operated groups (n=6). Resuscitation was initiated when mean arterial pressure (MAP) reached 30 mmHg. In the permissive hypotensive resuscitation group, fluid treatment continued until MAP reached 45+/-5 mmHg and in the aggressive fluid groups until MAP reached 60+/-5 mmHg. Resuscitation fluid was hetastarch 6% (hydroxyethyl starch) in the low-volume fluid groups and Ringer's lactate in the normovolemic fluid groups., Results: Mean survival time was 122.75+/-4.83 min in the normovolemic-normotensive fluid group, 130.87+/-16.31 min in the normovolemic-permissive hypotensive group, 122.12+/-11.53 min in the low-volume-normotensive fluid group, and 152.25+/-9.10 min in the low-volume-permissive hypotensive fluid group. Survival time was found significantly higher in the group in which low-volume-permissive hypotensive fluid treatment was applied than in the other groups., Conclusion: When pressure effect was compared during treatment, permissive-hypotensive resuscitation was found more effective in both groups that received colloid and crystalloid treatment.
- Published
- 2010
40. Glutamate responsiveness of medial vestibular nucleus neurons in aged rats.
- Author
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Him A, Guneser R, Cengiz N, and Oztürk G
- Subjects
- Action Potentials physiology, Animals, In Vitro Techniques, Male, Microelectrodes, Rats, Rats, Sprague-Dawley, Receptors, AMPA agonists, Receptors, AMPA metabolism, Receptors, Kainic Acid agonists, Receptors, Kainic Acid metabolism, Receptors, N-Methyl-D-Aspartate agonists, Receptors, N-Methyl-D-Aspartate metabolism, Aging physiology, Glutamic Acid metabolism, N-Methylaspartate metabolism, Neurons physiology, Vestibular Nuclei physiology, alpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid metabolism
- Abstract
Disequilibrium, dizziness, vertigo and falls are vestibular system-related problems which are very common especially in older people. In order to clarify these age-related disorders one must understand first the age-related changes in the properties of vestibular neurons that are responsible for equilibrium. The responsiveness of medial vestibular nucleus (MVN) neurons to the NMDA and AMPA/kainate receptor agonists was investigated in slices prepared from young and aged rats using extracellular single cell recording techniques. In both young and aged rats bath application of NMDA and AMPA caused a reversible, dose-dependant increase in the spontaneous discharge of the MVN neurons. The excitatory effects of both NMDA and AMPA on the spontaneous activity of aged MVN neurons were similar to those of young MVN neurons. The spontaneous firing rates of the MVN cells were also similar in young and aged rats. These results suggest that the responsiveness of the NMDA and AMPA/kainate receptors and the excitability of the MVN neurons do not change with age.
- Published
- 2010
- Full Text
- View/download PDF
41. An extreme foreign body ingestion (surgical blade) in a soldier.
- Author
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Harlak A, Oztürk G, Mentes O, and Tufan T
- Subjects
- Foreign Bodies diagnostic imaging, Foreign Bodies surgery, Humans, Male, Radiography, Young Adult, Colon, Ascending, Foreign Bodies etiology, Military Personnel, Surgical Instruments
- Published
- 2010
- Full Text
- View/download PDF
42. Effects of rhG-CSF plus dexamethasone on hemostatic parameters in healthy granulocyte donors: role of u-PA and nitric oxide.
- Author
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Ekmekçi OB, Oztürk G, Ekmekçi H, Atay D, Yanaşik M, Anak S, and Devecioğlu O
- Subjects
- Adult, Biomarkers analysis, Blood Component Removal methods, Dexamethasone administration & dosage, Drug Therapy, Combination, Factor VIII drug effects, Fibrin Fibrinogen Degradation Products drug effects, Granulocyte Colony-Stimulating Factor administration & dosage, Humans, Male, Middle Aged, Nitric Oxide blood, Recombinant Proteins, Risk, Thrombosis, Tissue Donors, Urokinase-Type Plasminogen Activator blood, Urokinase-Type Plasminogen Activator drug effects, von Willebrand Factor drug effects, Dexamethasone pharmacology, Granulocyte Colony-Stimulating Factor pharmacology, Granulocytes transplantation, Hemostasis drug effects
- Abstract
Granulocyte colony-stimulating factor (G-CSF) is widely used to reduce the risk of infection resulting from neutropenias and to mobilize and collect CD34+ hematopoetic progenitor cells (HPCs) for autologous and allogenic transplantation. The safety of recombinant human G-CSF (rhG-CSF) administration in healthy donors has been investigated in several studies. However, there are limited cumulative data about the effects of rhG-CSF on hemostasis. Hemostatic parameters, including urokinase-type plasminogen activator antigen (u-PA:Ag) and nitric oxide in 17 healthy granulocyte apheresis donors who donated for neutropenic patients were evaluated. rhG-CSF (single dose, 10 microg/kg subcutaneously) and dexamethasone (8 mg, single dose oral) were given to donors 12 hours before granulocyte apheresis. Two blood samples were drawn at time 0 (T(0)) before rhG-CSF and dexamethasone administration and at time 1 (T1), immediately before the apheresis. A statistically significant rise in coagulant factor VIII (FVIII) and von Willebrand factor (vWF), and slightly rise in u-PA:Ag were observed after G-CSF plus dexamethasone administration. In addition, there were positive correlations between vWF-D-dimer and FVIII-D-dimer. A significant decrease in mean total nitric oxide (NOx), nitrite, and nitrate levels was also found after G-CSF plus dexamethasone administration. Moreover, there was a strong negative correlation between nitrite and D-dimer levels (r = -0.611; P = .009). Even if partially compensated with u-PA and protein C, increased FVIII and vWF activity, and decreased nitric oxide levels may still partially contribute to progress of thrombosis risk in rhG-CSF plus dexamethasone administered healthy granulocyte donors. Large numbers of healthy donors exposed to G-CSF plus dexamethasone will be needed to evaluate the risk of thrombosis in this population.
- Published
- 2009
- Full Text
- View/download PDF
43. Blunt colonic injury: a 64-case series.
- Author
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Oztürk G, Aydinli B, Atamanalp SS, Celebi F, Acemoğlu H, and Dönmez R
- Subjects
- Adolescent, Adult, Aged, Colostomy, Female, Humans, Male, Middle Aged, Postoperative Complications, Prognosis, Retrospective Studies, Shock complications, Trauma Severity Indices, Treatment Outcome, Wounds, Nonpenetrating diagnosis, Young Adult, Colon injuries, Colon surgery, Wounds, Nonpenetrating mortality, Wounds, Nonpenetrating surgery
- Abstract
Background: Blunt colonic injuries are rare but can complicate the management of the blunt trauma patient and worsen the outcome. We analyzed in this study the colonic injuries caused by blunt abdominal trauma., Methods: The records of 64 patients (60 male, 4 female; mean age 39.3 years; range 16 to 69 years) were investigated retrospectively. The records were reviewed for clinical presentation, investigations, diagnostic methods, associated injuries, time from injury to operation, site of colon injury, operative management, morbidity, and mortality., Results: One-stage operation was performed in 53 cases (82.8%) and two-stage operation in 11 cases (17.2%). The treatment chosen was strongly related with the degree of fecal contamination and grade of colonic injury (p<0.01). The overall incidence of colonic injury-related abdominal complications was 26.5% (17 cases). There were six non-colon-related and one colon-related mortalities. Shock at presentation, severe fecal contamination, colon injury scale (CIS) grade, and associated injuries were related with complications and mortality., Conclusion: We conclude that in patients with shock at presentation, severe fecal contamination and higher CIS grade, two-staged operation is appropriate.
- Published
- 2009
44. Penetrating colon injury: experience of a single centre.
- Author
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Oztürk G, Aydinli B, Selcuk Atamanalp S, Celebi F, Ilhan Yildirgan M, and Donmez R
- Subjects
- Adolescent, Adult, Aged, Cohort Studies, Colectomy, Colostomy, Debridement, Female, Humans, Male, Middle Aged, Retrospective Studies, Risk Factors, Suture Techniques, Wounds, Gunshot diagnosis, Wounds, Gunshot mortality, Wounds, Stab diagnosis, Wounds, Stab mortality, Young Adult, Colon injuries, Wounds, Gunshot surgery, Wounds, Stab surgery
- Abstract
Objective: Penetrating colonic injuries are amongst the most discussed intra-abdominal injuries because of the complexity of their management and the severe complications. Penetrating colonic injuries can be managed by either primary repair or diversion. There is a debate over which procedure has to be used under which circumstances. In this retrospective study we analyzed our experience to contribute to the answer., Patients and Methods: The records of patients with penetrating colonic injury between January 1995 and December 2006 at the General Surgery Department of Atatürk University School of Medicine, were reviewed retrospectively., Results: One hundred and forty-one patients were included in the study. Ten patients did not need any surgical treatment. Seventy-nine patients (56%) were treated without formation of a stoma and fifty-two patients (36.8%) with formation of a stoma. The overall complication rate was 50.3% (71 patients). The rate of septic complications was 33.3%., Conclusion: There is an ongoing debate whether formation of a stoma is indicated in penetrating colonic injury or not. Our clinical experience showed that severe faecal contamination, shock at presentation, and high CIS grades are associated with increased postoperative complications and mortality. Therefore the treatment of penetrating colonic injury in the presence of these risk factors should be stoma formation rather than primary repair.
- Published
- 2009
- Full Text
- View/download PDF
45. Effects of topical mitomycin and trimetazidine on myringosclerosis.
- Author
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Cankaya H, Kösem M, Kiroglu F, Kiris M, Yuca K, Oztürk G, Dülger H, and Erdogan E
- Subjects
- Administration, Topical, Animals, Paracentesis, Rabbits, Sclerosis etiology, Sclerosis prevention & control, Middle Ear Ventilation adverse effects, Mitomycin administration & dosage, Nucleic Acid Synthesis Inhibitors administration & dosage, Trimetazidine administration & dosage, Tympanic Membrane pathology, Vasodilator Agents administration & dosage
- Abstract
Introduction: Myringosclerosis, one of the most common complications of ventilation tube placement, is a kind of tympanosclerosis and is defined as subepithelial hyalinization of the tympanic membrane. There are two arguments in the development of myringosclerosis: inflammation triggering the development of myringosclerosis and free oxygen radicals released during inflammation causing myringosclerosis., Objective: The aim of the present study was to explore the effects on the development of myringosclerosis of mitomycin, which has anti-inflammatory effects, and trimetazidine, which is believed to inhibit free oxygen radicals when given systemically., Materials and Method: The study was carried out on rabbits. Animals were divided into five groups, with six rabbits in each group: three control groups (paracentesis only, paracentesis+tube placement, and no intervention), a trimetazidine group, and a mitomycin group. Mitomycin (0.4 mg/mL) and trimetazidine (20 mg/mL) were applied topically to the tympanic membrane, and the presence and degree of sclerosis were graded histopathologically after Masson's trichrome staining., Results: In the histopathologic examination, sclerosis that developed in the tympanic membranes of rabbits that had undergone paracentesis or paracentesis plus tube application or received trimetazidine was significantly more extensive than sclerosis in the membranes of unoperated animals and those that had been administered mitomycin., Conclusions: Paracentesis in rabbits, independent of tube placement, causes sclerosis of the tympanic membrane. Results show that topical use of mitomycin, due to its anti-inflammatory effect, had alleviating effects on myringosclerosis, whereas topical trimetazidine did not.
- Published
- 2008
46. Differential analysis of effect of high glucose level in the development of neuropathy in a tissue culture model of diabetes mellitus: role of hyperosmolality.
- Author
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Oztürk G, Erdoğan E, Oztürk M, Cengiz N, and Him A
- Subjects
- Animals, Apoptosis drug effects, Axons drug effects, Axons physiology, Cell Death drug effects, Cell Movement drug effects, Diabetic Neuropathies physiopathology, Disease Models, Animal, Ganglia, Spinal drug effects, Ganglia, Spinal pathology, Hyperglycemia complications, In Situ Nick-End Labeling, Mannitol pharmacology, Mice, Neurons drug effects, Neurons pathology, Neurons physiology, Peripheral Nerves drug effects, Peripheral Nerves physiopathology, Regeneration drug effects, Diabetic Neuropathies epidemiology, Ganglia, Spinal physiopathology, Glucose pharmacology, Hyperglycemia physiopathology
- Abstract
To analyse the contributions of metabolic toxicity of high glucose level and accompanying hyperosmolality to the development of diabetic neuropathy, mouse dorsal root ganglion (DRG) cultures were used. DRGs from postnatal day 7 mice were embedded in collagen gel and incubated in RPMI 1640 culture medium with increasing concentrations of glucose or equimolar amounts of mannitol which would create similar osmolalities. Outgrowth of axons from the peripheral nerve attached to DRG and migration of cells into the gel were quantified. The extent of cell death, apoptosis and mitosis among the migrating cells and apoptosis among DRG neurons following exposure to high glucose or mannitol were also evaluated. The growth of axons was almost equally affected by increasing concentrations of glucose or mannitol up to 395 mOsm/kg H (2)O. Number of migrating cells was close to control values with mannitol between 340-395 mOsm/kg H (2)O while high concentrations of glucose always decreased it. Exposure to high glucose or mannitol led to increased proportions of dead and apoptotic migrating cells and apoptotic DRG neurons. Mitotic activity was also negatively affected by high glucose or mannitol. While glucose proved significantly more detrimental to migrating cells than mannitol in the latter tests, the extent of apoptosis was similar among DRG neurons in both conditions. In conclusion, the contribution of hyperosmolality to the development of neuropathy in high glucose condition appears to be quite significant. The peripheral nerve cells and neurons, however, are differentially affected by hyperosmolality and metabolic toxicity of high glucose.
- Published
- 2008
- Full Text
- View/download PDF
47. Reduction of hepatitis B seroprevalence in blood banking units by combined utilization of self-exclusion forms and clinical evaluation of blood donation candidates in Turkey.
- Author
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Yenicesu I, Dilsiz G, and Oztürk G
- Subjects
- Blood Banks standards, Hepatitis B prevention & control, Hepatitis B virology, Hepatitis B virus immunology, Humans, Medical Records, Seroepidemiologic Studies, Turkey epidemiology, Blood Donors psychology, Hepatitis B epidemiology, Hepatitis B Antibodies blood, Physical Examination, Self Disclosure, Transfusion Reaction
- Abstract
In this retrospectively designed study, we evaluate the influence of the permanence and qualifications of health-care professionals on blood disposal rates due to hepatitis seropositivity. We observed a decrease of 44.2% in the number of blood units being rejected due to the donor's hepatitis B seropositivity in the second study period in which self-exclusion forms and where blood donation candidates were evaluated by a family physician. However, a similar decrease of the disposal rate due to hepatitis C seropositivity was not observed. This is especially important in countries which cannot afford many of the expensive modern laboratory tests. A comprehensive evaluation of self-exclusion forms and a brief examination prior to donation will greatly increase transfusion safety. Unfortunately, there are blood banks in Turkey which employ no physicians at all.
- Published
- 2008
- Full Text
- View/download PDF
48. Evaluation of myorelaxant activity of 7-substituted hexahydroquinoline derivatives in isolated rabbit gastric fundus.
- Author
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Gündüz MG, Sevim Oztürk G, Vural IM, Simşek R, Sarioğlu Y, and Safak C
- Subjects
- Animals, Drug Evaluation, Preclinical, In Vitro Techniques, Muscle, Smooth drug effects, Muscle, Smooth physiology, Norepinephrine pharmacology, Pinacidil pharmacology, Quinolines chemistry, Rabbits, Gastric Fundus drug effects, Gastric Fundus physiology, Muscle Relaxation drug effects, Quinolines pharmacology
- Abstract
In this article, 16 new methyl(ethyl) 4-(dichlorophenyl)-2,7-dimethyl-5-oxo-l,4,5,6,7,8-hexahydroquinoline-3-carboxylates and methyl(ethyl) 2-methyl-4-(dichlorophenyl)-5-oxo-7-phenyl-l,4,5,6,7,8-hexahydroquinoline-3-carboxylate derivatives have been synthesized by the Hantzsch reaction and screened for their myorelaxant and potassium channel opening activities. The maximum relaxant effects (E(max)) and pD(2) values on exogenous noradrenaline precontracted tissues and inhibitory effects on cholinergic neurotransmission of the compounds and pinacidil were determined on isolated strips of rabbit gastric fundus smooth muscle. Obtained results indicated that some compounds and pinacidil produced concentration-dependent relaxation on rabbit gastric fundus smooth muscle strips in the two test conditions.
- Published
- 2008
- Full Text
- View/download PDF
49. Tandir burns: a severe cause of burns in rural Turkey.
- Author
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Akçay MN, Oztürk G, Aydinli B, and Ozoğul B
- Subjects
- Adolescent, Adult, Age Distribution, Body Surface Area, Burns epidemiology, Child, Child, Preschool, Female, Humans, Infant, Male, Middle Aged, Trauma Severity Indices, Turkey epidemiology, Accidents, Home, Burns etiology, Cooking and Eating Utensils
- Abstract
Tandir is the name given to an oven used for baking bread in the eastern and south-eastern part of Anatolia. Tandir burn is a special kind of burns in which primarily women and small children fall in it and have deep extensive burns (TBSA %). The records of 60 patients with tandir burn who were treated in our Burn Center from September 1999 to January 2006 were reviewed. The patients consisted of 9.2% of all burned patients. The mean age was 17.10 years (1-60 years) and 61.50% of the patients were female. The mean total body surface area (TBSA) burned was 21.09% (6-58) and 88% of the patients had third-degree burns. Eight of the patients underwent amputation of an extremity, 10 had fasciotomies, and 25 partial thickness skin grafts. The mean hospitalization period was 31.64 days (3-73 days). Fifteen patients (25%) died. Tandir burn is a severe kind of burn with a higher morbidity and mortality.
- Published
- 2008
- Full Text
- View/download PDF
50. Alveolar echinococcosis of liver presenting with neurological symptoms due to brain metastases with simultaneous lung metastasis: a case report.
- Author
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Aydinli B, Aydin U, Yazici P, Oztürk G, Onbaş O, and Polat KY
- Subjects
- Aphasia parasitology, Ataxia parasitology, Brain Diseases diagnosis, Brain Diseases drug therapy, Echinococcosis, Hepatic diagnosis, Echinococcosis, Hepatic drug therapy, Echinococcosis, Pulmonary diagnosis, Echinococcosis, Pulmonary drug therapy, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Brain Diseases parasitology, Echinococcosis, Hepatic complications, Echinococcosis, Pulmonary complications
- Abstract
Alveolar echinococcosis (AE) is a chronic and serious, even lethal, parasitic infection caused by the helminth Echinococcus multilocularis (EM). AE is an endemic disease in Turkey and it is particularly common in people living in the eastern Anatolia Region. In addition to various clinical presentations, symptoms which lead to diagnosis, however, are usually associated with the metastatic lesions. We herein reported a 62-year-old man who had liver alveolar hydatid disease with simultaneous lung and brain metastasis. We think there was only one therapeutic option, namely medical treatment with albendazol, which is the usual treatment for patients living in eastern Anatolia and who are admitted late resulting in a subsequent inoperable situation. Thus, radiological screening studies for the public in this region may increase the possibility of surgical treatment for alveolar hydatid disease.
- Published
- 2008
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