Publications by authors named "Ahmet Engin Atay"

18 Publications

  • Page 1 of 1

The relationship between glycemic control and osteocalcin, type 1 collagen C-terminal telopeptide, bone-specific alkaline phosphatase and the effects of anti-diabetic regimens on circulating markers of bone turnover in newly diagnosed diabetic patients: Bone health in diabetics.

Clin Nephrol 2021 May 27. Epub 2021 May 27.

Aim: Bone mineral disorders are being increasingly seen among diabetic populations as the frequency of diabetes mellitus (DM) is rising at an alarming rate. Our aim is to examine the relationship between glycemic control and bone turnover markers like osteocalcin (OC), C-terminal carboxy telopeptide (CTX), and bone-specific alkaline phosphatase (ALP) in patients with type 2 diabetes, and the effects of anti-diabetic regimens on these markers.

Materials And Methods: A total of 80 newly diagnosed type 2 DM patients were enrolled into the study and divided into two groups according to glucose regulation (group 1 HbA1c < 7 and group 2 HbA1c ≥ 7). They were also classified into three groups according to antidiabetic regimen. Physical examination findings, demographic characteristics, and anti-diabetic regimens of the patients were recorded. Hemogram and biochemical parameters were studied after 12 hours of fasting. Serum levels OC and CTX were examined by ELISA method. Bone-specific ALP was examined by Chemiluminesence immuneassay (CLIA) method. Bone densitometry was performed on the 2016 model Stratos DR device of DMS brand, and T scores of the patients were recorded. All parameters were repeated at the 6th month of the study.

Results: Serum vitamin D and OC levels of group 1 were higher, while ALP was higher in group 2. However, we failed to determine a significant difference in CTX levels between the groups. OC levels were enhanced only in patients receiving metformin plus vildagliptin therapy. The CTX levels increased in all groups, whereas they decreased in the metformin plus DPP-4 group.

Conclusion: Better glucose regulation is associated with better bone formation, and among three groups metformin plus vildagliptin therapy has a favorable effect on both bone formation and resorption.
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http://dx.doi.org/10.5414/CN110394DOI Listing
May 2021

The role of serum E-selectin level and E-selectin gene S128R polymorphism on the enlargement of renal cyst in patients with polycystic kidney disease: Genetic background of renal cyst growth
.

Clin Nephrol 2020 Jan;93(1):34-49

Background: To determine the role of E-selectin gene S128R polymorphism on the enlargement of renal cysts in patients with polycystic kidney disease (PKD).

Materials And Methods: 76 PKD patients with no comorbidity were enrolled in the study. Serum E-selectin levels were analyzed by enzyme-linked immunoabsorbent assay (ELISA). E-selectin gene S128R (561 A>C, rs: 5361) polymorphism was examined by polymerase chain reaction restriction fragment length (PCR-RFLP). Magnetic resonance imaging was performed at baseline evaluation and at the end of the 1 year to determine cyst enlargement and total kidney volume (TKV).

Results: No significant difference was identified between AA genotype and AC or CC variants of E-selectin gene S128R polymorphism in terms of age, disease duration, baseline cyst volume, cyst volume at the 12 month, baseline dominant cyst volume, and dominant cyst volume at the 12 month. In contrast, a significant difference was determined between the groups with regard to the change of TKV (2.9 ± 13.4 vs. 5.2 ± 16.3 mm; respectively, p = 0.01). In the correlation analysis, the serum E-selectin level was significantly correlated to glucose, alanine transaminase, creatinine, calcium, phosphorus, total protein, albumin, and end diastolic volume (p = 0.0001, p = 0.001, p = 0.03, p = 0.021, p = 0.023, p = 0.002, p = 0.003, and p = 0.047, respectively). Multivariate logistic regression analysis demonstrated a 1.32-fold higher risk of cyst enlargement in patients with CC polymorphism when compared to AA genotype (p = 0.052), but not between AA and AC genotypes or CC and AC genotypes.

Conclusion: PKD patients with CC variants of the E-selectin gene S128R polymorphism are at greater risk of cyst enlargement. The results of the present study should be confirmed with further studies with large sample size and longer duration of follow-up.
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http://dx.doi.org/10.5414/CN109750DOI Listing
January 2020

Serum ICAM-1 level and ICAM-1 gene 1462A>G (K469E) polimorphism on microalbuminuria in nondiabetic, nonhypertensive and normolipidemic obese patients: Genetical background of microalbuminuria in obesity.

Nefrologia 2017 Jul - Aug;37(4):381-388. Epub 2017 May 30.

Department of Endocrinology and Metabolism, Marmara University School of Medicine, Istanbul, Turkey.

Background: A growing body of evidence suggest that obese individuals are under risk of renal parenchymal disorders when compared to nonobese counterparts. Microalbuminuria is the early marker of renal involvement. Although most of obese patients carries multiple risk factors for microalbuminuria, some obese individuals without risk factor may progress to microalbuminuria. The present study was performed to examine the role of ICAM-1 gene 1462A>G (K469E) polymorphism on microalbuminuria in obese subjects without diabetes mellitus, hypertension, hiperlipidemia and older age.

Methods: Ninety eight obese and 96 nonobese individuals without a comorbidity enrolled into the study. Serum ICAM-1 level was measured by enzyme linked immunoabsorbent assay (ELISA) method. ICAM-1 gene 1462A>G (K469E) polymorphism was examined by restriction fragment length polymorphism-polymerase chain reaction (RFLP-PCR). Nepholometric method was used to examine urinary albumin loss, and microalbuminuria was measured by albumin to creatinine ratio.

Results: Obese individuals had significantly higher microalbuminuria and proteinuria level compared to nonobese subjects (p: 0.043 and p: 0.011; respectively). GG genotype of ICAM-1 carriers have significantly higher microalbuminuria compared to individuals with AA or AG genotype carriers (p: 0.042). Serum ICAM-1 level was significantly correlated with creatinine and microalbuminuria (p: 0.002 and p: 0.03; respectively). Logistic regression analysis indicated a 7.39 fold increased risk of microalbuminuria in individuals with GG genotype of ICAM-1 gene 1462A>G (K469E) polymorphism.

Conclusions: GG genotype of ICAM-1 gene K469E polymorphism is associated with increased microalbuminuria in obese individuals without another metabolic risk factor.
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http://dx.doi.org/10.1016/j.nefro.2016.11.025DOI Listing
May 2017

The relation of anthropometric measurements and insulin resistance in patients with polycystic kidney disease.

J Transl Int Med 2016 Sep 23;4(3):127-134. Epub 2016 Sep 23.

Bagcilar Education and Research Hospital, Internal Medicine, Istanbul, Turkey.

Objective: To examine the frequency of insulin resistance (IR) and its relation with anthropometric measurements in patients with autosomal dominant polycystic kidney disease (ADPKD).

Material And Methods: Nonobese 82 patients with ADPKD and 58 age matched healthy controls were enrolled into the study. None of participants were diabetic or receiving renal replacement therapies (RRT). IR was determined by homeostasis model assessment of insulin resistance (HOMA-IR) formula. Tanita body composition analyzer was used for anthropometric measurements. Creatinine clearance of participant were assessed by the modification of diet in renal diseases (MDRD).

Results: Patients with ADPKD had significantly higher level of urea and creatinine, microalbuminuria, and lower level of MDRD. Body fat distribution and HOMA-IR in both the groups were similar. Systolic and diastolic blood pressure of patients were higher than those of controls.

Conclusion: We failed to determine a higher frequency of IR among patients with ADPKD.
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http://dx.doi.org/10.1515/jtim-2016-0029DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5290883PMC
September 2016

Decreased Serum 25-hydroxyvitamin D Level Causes Interventricular Septal Hypertrophy in Patients on Peritoneal Dialysis: Cardiovascular Aspects of Endogenous Vitamin D Deficiency.

Int J Nephrol 2016 27;2016:2464953. Epub 2016 Nov 27.

Department of Internal Medicine and Nephrology, Cerrahpasa School of Medicine, Istanbul University, Istanbul, Turkey.

. In the present study, we aimed to analyze the relation of vitamin D with echocardiographic indexes in patients with end stage renal disease (ESRD) receiving renal replacement therapy (RRT). . A total of 98 patients, 64 patients on hemodialysis (HD) (29F/35M, mean age 56.75 ± 18.63 years) and 34 age matched patients on peritoneal dialysis (PD) (21F/13M, mean age 58.11 ± 10.63 years), with similar duration of ESRD and RRT were enrolled into this cross-sectional study. Echocardiographic examination was performed after dialysis session at normovolemic status. Fasting blood samples were obtained before dialysis session. . Patients on PD and female patients in both groups had significantly lower level of 25-OH-D3 level when compared to patients on HD or male patients (: 0.0001 and : 0.0001). When all participants were considered, there was no significant association between 25-OH-D3 and echocardiographic parameters; however, in patients on PD, a significant negative correlation was determined between 25-OH-D3 and diastolic blood pressure, interventricular septal hypertrophy (ISH), and left ventricular mass index (LVMI) (: -0.424, : 0.012; : -0.508, : 0.004; : 0.489, : 0.04, resp.). . Low serum 25-hydroxyvitamin D levels is associated with ISH and LVMI in PD patients.
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http://dx.doi.org/10.1155/2016/2464953DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5149695PMC
November 2016

Relation of Complementary-Alternative Medicine use with glomerular filtration rate and depression in patients with chronic kidney disease at predialysis stage.

Nephrology (Carlton) 2015 Oct;20(10):671-678

Division of Nephrology, Department of Internal Medicine, Bagcilar Education and Research Hospital, Istanbul, Turkey.

Aim: Complementary and alternative medicine is a broad field of health including all health care practices and methods, and their accompanying theories and beliefs. In the present study, we aimed to examine the frequency of complementary-alternative medicine use, and its relation with glomerular filtration rate and depression in patients with chronic kidney disease at predialysis stage.

Methods: A total of 1053 predialysis patients; 518 female and 535 male, that were followed up with chronic kidney disease for at least 3 months were enrolled into the study. Demographic features, biochemical parameters and findings of physical examination were recorded. Their compliance to diet, and knowledge about disease were questioned. Beck depression inventory and questionnaire regarding complementary-alternative medicine use were performed.

Results: The overall frequency of complementary-alternative medicine use was 40.3% . Total ratio of herbal products was 46%. Complementary-alternative medicine use was significantly more frequent in female or single patients, and patients that informed about chronic kidney disease or under strict diet (P = 0.007, P = 0.016, P = 0.02, P = 0.016, respectively). When glomerular filtration rate of participants were considered, complementary-alternative medicine use was similar in different stages of kidney disease. Depression was observed in 41.9% of patients and significantly frequent in patients with alternative method use (P = 0.002). Depression score was higher as creatinine increases and glomerular filtration rate decreases (P = 0.002; r = 0.093).

Conclusion: We determined that complementary-alternative medicine use gradually increases at predialysis stage as glomerular filtration rate decreases and there is a strict relation between complementary-alternative medicine use and depression or female gender. Disorder related stressors may lead to seeking of alternative methods.
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http://dx.doi.org/10.1111/nep.12503DOI Listing
October 2015

The relation of mean platelet volume with microalbuminuria and glomerular filtration rate in obese individuals without other metabolic risk factors: the role of platelets on renal functions.

Clin Nephrol 2015 Jun;83(6):322-9

Introduction: Mean platelet volume (MPV) is an indirect indicator of platelet activity that plays a major role in the pathogenesis of endothelial injury. Obese individuals have higher microalbuminuria which is the initial step of renal endothelial injury. We aimed to analyze the relation of microalbuminuria and MPV in obese individuals without metabolic risk factors.

Methods: A total of 290 obese individuals (body mass index (BMI)>30 kg/m2) without an accompanying chronic disorder, and 204 nonobese healthy subjects were enrolled into the study. All participants underwent physical examination. Biochemical, hemogram, and hormonal parameters along with urine albumin analysis were performed. Glomerular filtration rate (GFR) was measured by Cockcroft-Gault (GFRC&G), modification of diet in renal disease (MDRD). The BMI was calculated as weight/height2 (kg/m2). Logistic regression analysis was used to analyze relation of variables.

Results: The patient group consisted of 171 (59%) female (mean age: 37.15±8.05 years) and 119 (41%) male (mean age 38.98±10.68 years) obese individuals. 130 (63.7%) age matched female (mean age 36.18±8.26 years) and 74 (36.3%) age matched male (mean age 36.49±10.25 years) controls were assigned to the control group. There was a significant difference between groups with regard to BMI, spot microalbuminuria, spot urine microalbuminuria/creatinine ratio but not with to MPV and spot urine creatinine (p: 0.01, 0.004, 0.002; respectively). GFR measured by MDRD and Cockcroft-Gault formula were significantly higher in the obese group (p<0.001 for both). Correlation analysis revealed a significant correlation between BMI and spot urine microalbuminuria, spot urine microalbuminuria/creatinine ratio, GFR (Cockcroft-Gault Formula), Homeostasis Model Assessment of Insulin resistance (HOMA-IR), insulin, C-peptide, diastolic blood pressure, glucose, uric acid, total cholesterol, low density lipoprotein (LDL)-cholesterol, c-reactive protein (CRP), thyroid stimulating hormone (TSH), leukocyte count, platelet count. MPV was inversely and significantly correlated with spot urine creatinine, systolic blood pressure, triglyceride, C-peptide, and platelet count. Mean urea, creatinine, uric acid, triglyceride, total cholesterol, LDL-cholesterol, insulin, C-peptide, HOMA-IR were significantly higher in obese male individuals while obese female individuals had higher levels of mean high density lipoprotein (HDL), CRP, TSH, platelet count, spot urine microalbumin/creatinine rate, and GFR measured by MDRD.

Conclusions: Obese individuals have higher microalbuminuria and nonsignificantly elevated MPV, however, urine albumin loss is independent of MPV.
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http://dx.doi.org/10.5414/CN108534DOI Listing
June 2015

Is hemodialysis a reason for unresponsiveness to hepatitis B vaccine? Hepatitis B virus and dialysis therapy.

World J Hepatol 2015 Apr;7(5):761-8

Dede Sit, Bennur Esen, Ahmet Engin Atay, Hasan Kayabaşı, Department of Internal Medicine and Nephrology, Bagcilar Education and Research Hospital, Istanbul 34200, Turkey.

Impaired renal function is associated with a high risk of chronicity of hepatitis B virus (HBV) infection. Patients on hemodialysis (HD) or peritoneal dialysis are at an increased risk of viral transmission due to frequent necessity of blood product transfer as well as use of contaminated dialysate or dialysis materials. Additionally, health professionals may cause viral spread via contaminated hands and carelessness against hygiene rules. The frequency of chronic HBV infection may be as high as 80% in patients on renal replacement therapies. This is because HBV vaccination is essential to eliminate chronic HBV infection. However, response rates of HD patients to HBV vaccination vary between 10%-50%. Dialysis adequacy and early vaccination before the onset of dialysis therapy seem to be major determinants of high seroconversion rates. Older age, male gender, duration of dialysis therapy and nutritional status are other well-known factors associated with seroconversion rate. There are controversial reports regarding the role of the presence of diabetes mellitus, HCV positivity, erythropoietin resistance, hyperparathyroidism, and vitamin D inadequacy. The role of genetic alteration in the functions or production of cytokines still needs to be elucidated.
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http://dx.doi.org/10.4254/wjh.v7.i5.761DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4404381PMC
April 2015

Evaluation of relationship between sexual functions, depression and quality of life in patients with chronic kidney disease at predialysis stage.

Ren Fail 2015 Mar 18;37(2):262-7. Epub 2014 Dec 18.

Division of Nephrology, Department of Internal Medicine, Bagcilar Research and Training Center , Istanbul , Turkey .

Aim: The relation of chronic kidney disease (CKD) with metabolic, psychiatric and endocrinologic disorder is well-known. Depressive mood and sexual dysfunction are frequently observed as renal functions deteriorate. We aimed to analyze the relationship of sexual dysfunction, depressive mood and life quality in patients with CKD at predialysis stage.

Patients And Methods: Fifty-three patients; 27 female and 26 male with CKD who had estimated glomerular filtration rate (eGFR) between 15 and 90 mL/min and followed up in the Nephrology Department, Bursa Sevket Yılmaz Education and Research Hospital, were enrolled. Age- and sex-matched 20 female and 20 male healthy control subjects were assigned to the control group. Detailed medical and sexual history was obtained by using Female Sexual Function Index (FSFI), Erectile Function International Evaluation Form (IEFF), Short form (SF) 36 Form and Beck Depression Questionnaire (BDI). Biochemical and hormonal parameters including urea, creatinine, uric acid, sedimentation rate, c-reactive protein, total testosterone, DHEA-S, FSH, LH, TSH, estradiol and prolactin were analyzed.

Findings: Depression was observed in 12 male (46%) and 14 female (51%) patients. The frequency of depression among male patients and control subjects was similar, however, significantly higher in female patients than female controls (p=0.036). Physical function score, physical role score and pain score in SF 36 of entire patients were significantly lower than controls (p=0.0001, 0.0001, 0.001, respectively). The frequency of depression was similar between patients and controls (p>0.05). When SF 36 tests of male and female patients were compared, general health status, vitality and mental health status were significantly better in male patients (p=0.005, 0.016, 0.035, respectively). SF 36 scores of female patients were significantly lower than female controls (p=0.0001). The frequency of erectile dysfunction (ED) was similar between male patients (84%) and controls (75%) (p=0.62). On the other hand, sexual dysfunction was significantly higher in female patients when compared to female controls (92% vs. 30%; p=0.0001).

Conclusion: We showed that sexual dysfunction and depression are more frequent among female patients with CKD at predialysis stage; however, it does not have significant impact on life quality. When life quality of female and male patients was compared, general health status, vitality and mental health status of female patients were poorer. We failed to demonstrate a relationship between sexual dysfunction and sex hormone level.
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http://dx.doi.org/10.3109/0886022X.2014.990348DOI Listing
March 2015

Association of endothelial nitric oxide synthase gene G894T polymorphism and serum nitric oxide levels in patients with preeclampsia and gestational hypertension.

J Matern Fetal Neonatal Med 2015 Nov 20;28(16):1907-11. Epub 2014 Oct 20.

a Department of Obstetrics and Gynecology , Suleymaniye Maternity Education and Research Hospital , Istanbul , Turkey .

Objective: Pregnancy-induced hypertension is one of the most important cause of maternal-fetal morbidity and mortality. Pregnancy-related hypertensive disorders are usually associated with diminished nitric oxide (NO) levels. We aimed to evaluate the role of serum NO levels and eNOS gene G894T polymorphism on hypertensive disorders of pregnancy.

Methods: Eighty patients with gestational hypertension or preeclampsia, and 80 healthy pregnants were enrolled to analyze serum NO levels and G894T polymorphism of the eNOS gene. NO level was analyzed by high-performance liquid chromatography (HPLC) method. The G894T polymorphism of the eNOS gene was determined by polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP).

Results: There was no significant difference between groups in terms of G894T/eNOS genotype and allele frequencies (p > 0.05). Serum NO levels were significantly lower in the patients group. In the control group, subjects with thymine-thymine (TT) genotype had significantly lower NO levels when compared to subjects with guanine-guanine (GG) or guanine-thymine (GT) genotype (p < 0.05).

Conclusions: We failed to demonstrate an association between eNOS gene G894T polymorphism and serum NO levels in patients with pregnancy-induced hypertensive disorders. We established a relation between pregnancy-induced hypertension and low NO levels.
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http://dx.doi.org/10.3109/14767058.2014.971748DOI Listing
November 2015

Lack of Association between PTPN22 Gene +1858 C>T Polymorphism and Susceptibility to Generalized Vitiligo in a Turkish Population.

Ann Dermatol 2014 Feb 17;26(1):88-91. Epub 2014 Feb 17.

Department of Internal Medicine, Bagcilar Education and Research, İstanbul, Turkey.

Background: Vitiligo is an autoimmune polygenic disorder characterized by loss of pigmentation due to melanocyte destruction. The PTPN22 gene +1858 C>T single nucleotide polymorphism (rs2476601) has been shown to be associated with various autoimmune disorders.

Objective: The aim of this study was to investigate whether the PTPN22 gene +1858 C>T single nucleotide polymorphism is associated with susceptibility to generalized vitiligo in a Turkish population.

Methods: One hundred and seven patients with generalized vitiligo, and one hundred and twelve gender-, age-, and ethnic-matched controls were enrolled in the study. Genotyping was done by polymerase chain reaction-restriction fragment length polymorphism.

Results: The PTPN22 +1858 C>T genotype and allele frequencies of the generalized vitiligo patients did not differ significantly from those of healthy controls.

Conclusion: We found no association between the PTPN22 +1858 C>T gene polymorphism and vitiligo susceptibility in Turkish generalized-vitiligo patients.
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http://dx.doi.org/10.5021/ad.2014.26.1.88DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3956800PMC
February 2014

Prenatal diagnosis of 4p and 4q subtelomeric microdeletion in de novo ring chromosome 4.

Case Rep Obstet Gynecol 2013 19;2013:248050. Epub 2013 Dec 19.

Department of Medical Biology and Genetics, Faculty of Medicine, Dicle University, 21280 Diyarbakir, Turkey.

Ring chromosomes are unusual abnormalities that are observed in prenatal diagnosis. A 23-year-old patient (gravida 1, para 0) referred for amniocentesis due to abnormal maternal serum screening result in the 16th week of second pregnancy. Cytogenetic analysis of cultured amniyotic fluid cells revealed out ring chromosome 4. Both maternal and paternal karyotypes were normal. Terminal deletion was observed in both 4p and 4q arms of ring chromosome 4 by fluorescence in situ hybridization (FISH). However deletion was not observed in the WHS critical region of both normal and ring chromosome 4 by an additional FISH study. These results were confirmed by means of array-CGH showing terminal deletions on 4p16.3 (130 kb) and 4q35.2 (2.449 Mb). In the 21th week of pregnancy, no gross anomalia, except two weeks symmetric growth retardation, was present in the fetal ultrasonographic examination. According to our review of literature, this is the first prenatal case with 4p and 4q subtelomeric deletion of ring chromosome 4 without the involvement of WHS critical region. Our report describes the prenatal case with a ring chromosome 4 abnormality completely characterized by array-CGH which provided complementary data for genetic counseling of prenatal diagnosis.
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http://dx.doi.org/10.1155/2013/248050DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3880738PMC
January 2014

The association of endothelial nitric oxide synthase gene G894T polymorphism and serum nitric oxide concentration with microalbuminuria in patients with gestational diabetes.

Clin Nephrol 2014 Feb;81(2):105-11

Department of Internal Medicine, Bagcılar Education and Research Hospital, Istanbul, Department of Medical Biology, Medical School of Harran University, Sanlıurfa, Department of Physiology, Medical School of Mustafa Kemal University, Hatay, Department of Obstetrics and Gynecology, Suleymaniye Education and Research Hospital, Istanbul, Department of Obstetrics and Gynecology, Medical Faculty of Harran University, Sanlıurfa, and Department of Medical Biology and Genetics, Medical Faculty of Dicle University, Diyarbakir, Turkey.

Aim: Gestational diabetes mellitus (GDM) is a glucose intolerant condition that affects 14% of all pregnancies. Diabetes mellitus (DM) occurs in 30 - 70% of patients with GDM after delivery. DM and GDM are associated with structural and functional deterioration of the renovascular system. Our aim is to investigate the association Glu- 298Asp polymorphism of the endothelial nitric oxide synthase (eNOS) gene with serum nitric oxide levels and microalbuminuria in patients with GDM and healthy pregnancies.

Material And Methods: Serum nitric oxide (NO) levels, urinary excretion of albumin and Glu298Asp polymorphism of the eNOS gene were analyzed in 68 patients with GDM and 73 healthy controls. High performance liquid chromatography (HPLC-Griess) method was used to analyze serum NO levels. Microalbuminuria was evaluated by rate nephelometry method. The Glu298Asp polymorphism of the eNOS gene was determined by polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP).

Results: Nitric oxide, glucose, creatinine, and microalbuminuria were significantly different between the patients and the control subjects (p = 0.001, p = 0.001, p = 0.002, and p = 0.005, respectively). There was a significant difference between groups in terms of the ratio of GG/GT+TT of eNOS gene Glu- 298Asp (p = 0.02). The patients with GT+TT genotype had significantly higher microalbuminuria levels and lower NO concentrations (22.16 vs. 9.51, p = 0.005, and 10.56 vs. 12.73, p = 0.021, respectively). The presence of T allele of eNOS gene is an independent predictor of microalbuminuria (OR: 2.346, 95% confidence interval: 1.247 - 5.238, p = 0.02) as well as serum glucose and NO concentration.

Conclusion: The G894T polymorphism of eNOS gene and decreased NO concentration seem to be independent predictors of increased urinary excretion of albumin in patients with GDM. Determining the frequency of eNOS gene G894T polymorphism may help to identify pregnancies at increased risk of microalbuminuria.
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http://dx.doi.org/10.5414/cn108138DOI Listing
February 2014

An unusual case of cavernous hemangioma of the rib in a young man with lung tuberculosis: a brief review and case report.

Intern Med 2013 ;52(11):1263-5

Department of Chest Surgery, Diyarbakir Training Hospital, Turkey.

Hemangiomas are benign vascular tumors that usually involve the liver, skin, eyes and central nervous system. Hemangioma of the bone is unusual and is generally observed in the vertebrae or skull while hemangioma of the costae is extremely rare. Hemangioma of the rib and chest wall tuberculosis may be misdiagnosed as chest wall tumors. We herein report a case of hemangioma of the rib with a tuberculosis infection of the pleura.
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http://dx.doi.org/10.2169/internalmedicine.52.9212DOI Listing
February 2014

Predictive role of acute phase reactants in the response to therapy in patients with chronic hepatitis C virus infection.

Gut Liver 2013 Jan 13;7(1):82-8. Epub 2012 Nov 13.

Department of Internal Medicine, Gaziantep University Faculty of Medicine, Gaziantep, Turkey.

Background/aims: Biochemical parameters and acute-phase proteins (APPs) may provide complementary data in patients with chronic hepatitis C (CHC). We aimed to evaluate the predictive role of APPs in the response to antiviral therapy.

Methods: Forty-five patients underwent antiviral therapy. Serum ferritin, C-reactive protein (CRP), transferrin, albumin, alpha-1 acid glycoprotein (A1AG), and alpha-2 macroglobulin (A2MG) levels were examined at the initial evaluation and at the 4th, 12th, and 48th weeks. HCV RNA levels were examined at the initial evaluation and at the 12th and 48th weeks.

Results: Ferritin, transferrin, A1AG, and A2MG levels were significantly higher in the patient group (p<0.05). CRP, ferritin, A1AG, and A2MG levels were significantly increased from baseline to the 4th week (p<0.05). The responders and nonresponders to antiviral therapy had insignificantly but remarkably different levels of CRP, ferritin, transferrin, A1AG, A2MG, and alanine aminotransferase (ALT) both at the initial evaluation and at the 12th week.

Conclusions: Variations in ferritin, A1AG, A2MG, albumin, CRP, and transferrin levels are not alternatives to virological and biochemical parameters for predicting an early response to therapy in patients with CHC. However, the investigation of ALT levels and hepatitis C virus RNA in combination with acute-phase reactants may provide supplementary data for evaluating responses to antiviral therapy.
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http://dx.doi.org/10.5009/gnl.2013.7.1.82DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3572325PMC
January 2013

Effects of hyperbaric oxygen on crystalline lens and retina in nicotine-exposed rats.

Cutan Ocul Toxicol 2013 Mar 6;32(1):9-12. Epub 2012 Jun 6.

Department of Ophthalmology, Medicine Faculty, Dicle University, Diyarbakir, Turkey.

Objective: To determine histopathological changes on crystalline lens and retina of rats after subcutaneous injection of nicotine and to examine the effects of hyperbaric oxygen (HBO) on these changes related to nicotine exposure.

Methods: Twenty-eight female Sprague-Dawley rats were enrolled in the study and the rats were divided into four equal sized groups randomly (Group N: the rats exposed only to nicotine, group HB: the rats received only HBO, group N+HB: the rats that underwent to nicotine injection and subsequently received HBO, group C: the control group that neither exposed to nicotine nor received HBO). The rats were sacrificed by decapitation method and all were enucleated immediately after scarification. Tissue samples from crystalline lens, lens capsule, and the retina from the right eyes of the rats were examined by light microscopy.

Results: While the histological appearances of the retina and the lens was similar in group HB, group N+HB, and the control group; group N showed some pathological changes like decrement in the retinal ganglion cell density, atrophy of the retinal nerve fiber layer, congestion of the vessels in the optic nerve head, thinning of the internal plexiform layer, thinning of the lens capsule, and transformation of the anterior subcapsular epithelium into squamous epithelia.

Discussion: Subcutaneous injection of nicotine was found to be related with some pathological changes in the retina and lens of the Sprague-Dawley rats. However HBO caused no significant negative effect. Furthermore, the histopathological changes related to nicotine exposure in the lens and retina of the rats recovered by the application of HBO.
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http://dx.doi.org/10.3109/15569527.2012.686078DOI Listing
March 2013

Tuberous sclerosis presented with polycystic kidney disease and acute renal failure.

Arch Iran Med 2012 Jun;15(6):384-6

Department of Internal Medicine, Family Medical Center, Diyarbakir, Turkey.

Tuberous sclerosis complex (TSC) is an autosomal dominant disorder characterized by hamartomatous involvement of multiple organs such as the skin, central nervous system, kidneys, lungs, and heart. A linkage has been found with a locus on the long arm of chromosome 9 (9q34) and with a locus on the short arm of chromosome 16 (16p13). TSC has a birth incidence of 1/6000. Children with TSC are almost universally born with normal kidneys, but cystic disease and angiomyolipomas develop with increasing age. Angiomyolipomas, renal cysts, and renal cell carcinoma are classical features of renal involvement in TSC. Renal complications are the most common cause of death in adult TSC patients, thus renal involvement has a crucial importance on the course of this disease. We present a 27-year-old patient previously diagnosed as tuberous sclerosis complex and referred with acute renal failure and polycystic kidney disease.
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http://dx.doi.org/012156/AIM.0015DOI Listing
June 2012

Use of adjunctive mitomycin C in external dacryocystorhinostomy surgery compared with surgery alone in patients with nasolacrimal duct obstruction: A prospective, double-masked, randomized, controlled trial.

Curr Ther Res Clin Exp 2009 Aug;70(4):267-73

Department of Ophthalmology, Dicle University Faculty of Medicine, Diyarbakir, Turkey.

Background: The most common cause for the failure of external dacryocystorhinostomy (DCR) surgery is the formation of granulation tissue at the osteotomy site or common canaliculus.

Objectives: The aims of this study were to assess the efficacy of intraoperative adjunctive mitomycin C (MMC) treatment in external DCR surgery and to compare this procedure with the standard DCR procedure alone in the long term (1 year).

Methods: In this prospective, double-masked, randomized, controlled trial, patients with primary acquired nasolacrimal duct obstruction were randomized (using a random number table) into 2 groups based on surgical procedure. In the MMC group, intraoperative adjunctive MMC 0.2 mg/mL was applied to the osteotomy site for 30 minutes. The control group underwent standard DCR procedure only. The results of the DCR surgeries were assessed using objective findings (eg, cessation of excessive tearing via nasolacrimal duct irrigation and the improvement in height of tear meniscus) and subjective symptoms (asking patients to describe the degree of tearing improvement). Both the patients and the researchers who were assessing the study outcomes were masked to treatment group.

Results: One hundred eyes of 100 Turkish patients were assessed and equally randomized to the MMC (27 women, 23 men; mean [SD] age, 47.0 [7.6] years) and control (26 women, 24 men; mean age, 46.6 [8.8] years) groups. The follow-up period was not significantly different between the MMC and the control groups (13.1 [1.1] vs 13.2 [1.4] months). Significantly more eyes in the MMC group than the control group remained symptom-free throughout the 1-year follow-up period (45/50 [90%] vs 33/50 [66%]; P=0.005). Significantly more patients in the control group than the MMC group had an improvement in symptoms at the 1-year follow-up (8/50 [16%] vs 2/50 [4%] eyes; P=0.005). Based on the patency of the drainage system, the success rate was significantly greater in the MMC group than the control group (48/50 [96%] vs 42/50 [84%]; P=0.005). Based on nasolacrimal duct irrigation, significantly fewer patients in the MMC group than the control group had an enclosed naso-lacrimal duct (2/50 [4%] vs 8/50 [16%]). No adverse effects (eg, abnormal nasal bleeding, mucosal necrosis, infection) or any other surgical adverse events were observed.

Conclusions: In the management of these patients with primary acquired nasolacrimal duct obstruction, adjunctive intraoperative MMC application with standard DCR surgery had a significantly higher success rate than did standard DCR surgery alone. Further large, double-masked, randomized studies are needed to confirm these findings.
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http://dx.doi.org/10.1016/j.curtheres.2009.08.003DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3967366PMC
August 2009