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Öğe Hepatitis B virus infection in patient with Hodgkin's and non-Hodgkin's lymphoma and clinical significance(2007) Altintaş A.; Kaplan M.A.; Çil T.; Yilmaz Ş.; Bayan K.; Daniş R.; Ayyildiz O.Hepatitis B virus (HBV) is a hepatotrophic virus that have also a potential to replicate in lymphoid cells. This has led to evaluation of potential association between HBV infection and lymphomas. In this study, we retrospectively determined the HBV surface antigen and anti-HBs antibody in Southeastern region of Turkey where the prevalence of this infection is relatively high. A total of 276 patients were recruited, 203 (73.6%) with non-Hodgkin's lymphoma (NHL) and 73 (26.4%) with Hodgkin's lymphoma (HL), in the period of January 1995 and December 2005. In total, 40 (14.5%) patients were positive for HBsAg. Of them, 12 (16.4%) were in HL group and 28 (13.7%) were in NHL group. Anti-HBs antibody was positive in total of 123 patients [29 (39.7%) in HL and 94 (46.3%) in NHL]. Eleven patients were taken lamivudine prophylaxis (100 mg po / day) in the last two years. Ten were not developed a reactivation, while one with diffuse large-cell NHL reactivated. Besides, one patients with HL who was not taking prophylaxis developed anti-HBcIgM positive with aminotransferase elevations compatible with acute hepatitis. Although HBsAg positivity was higher in lymphoma patients than in general population in our study, for a possible casual association there is need for prospective studies with wider populations. In conclusion, prophylaxis with lamivudine of HBV carriers is important and treatment should be continued until one year after termination of chemotherapy.Öğe Insulin Sensitivity, ? Cell Function and Serum Lipid Levels in Helicobacter Pylori Positive, Non-Obese, Young Adult Males(2004) Dursun M.; Bahceci M.; Tuzcu A.; Yilmaz Ş.; Canoruç F.It is not clear whether Helicobacter pylori (Hp) infection affects insulin levels and insulin sensitivity. We aimed to determine insulin sensitivity and beta cell function, and to evaluate serum lipids in subjects with and without Hp infection. Eighty non-obese young adult males, 40 of whom were Hp positive and 40 were negative, were included in the study. Two endoscopic biopsy specimens were obtained from each subject. Height, weight and waist-hip circumference were measured, and body mass index (BMI) was calculated. Serum glucose, total, HDL, LDL and VLDL-cholesterol and triglyceride levels were determined. Body fat mass and percentage were determined by bioelectric impedance. Serum insulin levels were measured by the RIA method. HOMA was used as an index of pancreatic beta cell function and insulin sensitivity. The independent-t test was used in the comparison of results. Age, BMI, waist and hip circumferences, and fat percentages did not exhibit any statistical differences. Mean HOMA-B [111.7, in Hp(+) and 112.0 in Hp(-) subjects] and HOMA-S [67.7 in Hp(+) and 60.7 Hp(-) subjects] did not differ amoung the groups. The lipid and aminotransferase levels of the 2 groups were also similar. Conclusion: Hp infection is not associated with impairment of insulin sensitivity and deterioration of the glucose metabolism. It seems to be metabolically neutral in terms of serum lipids and aminotransferase levels.Öğe Investigation of autoantibody, anti-HCV and anti-HIV seropositivities in "anti-HBc alone" positive samples(2006) Meşe S.; Özekinci T.; Yilmaz Ş.; Atmaca S.; Arikan E."Anti-HBc alone" which is an unusual serologic pattern of hepatitis B virus (HBV) infections, may be detected in the seropositive samples for hepatitis C virus (HCV), human immunodeficiency virus (HIV) infections and in the presence of autoantibodies due to cross reactions. In this study, 20 serum samples with isolated antibody to hepatitis B core antigen, which were detected in May 2005, have been investigated by means of the presence of some autoantibodies (anti-nuclear antibody; ANA and rheumatoid factor; RF), anti-HCV and anti-HIV, in the Central Laboratory of Dicle University Medical School. All of the "anti-HBc alone" samples were negative for HBV-DNA by real-time polymerase chain reaction (PCR), and liver enzyme (ALT and AST) levels were normal except for three patients. As a result, a total of six (30%) samples were found positive. Four of them were positive for ANA and two were positive for anti-HCV, while one serum yielded positivity for both ANA and anti-HCV. Anti-HCV positive samples were searched for the presence of HCV-RNA by real-time PCR, and none were found positive. Of three patients with increased AST and ALT levels, one was anti-HCV positive, one was ANA positive, while the other was negative for all parameters. In conclusion, possible presence of autoantibodies and anti-HCV should be taken into consideration during the evaluation of isolated anti-HBc IgG positive test results.Öğe Microchimerism, a dilemma in current medicine(2006) Özmen Ş.; Daniş R.; Altintaş A.; Bayan K.; Yilmaz Ş.Microchimerism refers to presence of a small number of cells, or DNA of one individual harbored in another individual. Many studies indicate that cell trafficking occurs between the fetus and mother during pregnancy and between others after organ transplantation or blood transfusions. These cells or DHA can persist in recipient's blood or tissues for decades, creating a state of physiologic microchimetism. In several recent studies, microchimerism has been shown to have potential roles in pathogenesis of different diseases. However, due to the fact that microchimerism has also been found in healthy individuals and in organs affected by non-autoimmune conditions, an alternative hypothesis has been suggested in which microchimeiic cells are associated with the healing process of a tissue injury as opposed to causing disease. As a conclusion of this review of recent studies, we can say that microchimerism studies yielded more questions than answers.Öğe A patient with gastric carcinoid tumor: Treatment and surveillance options [2](2005) Yilmaz Ş.; Dursun M.; Canoruç F.[No abstract available]Öğe An unusual case of fever of unknown origin: Kikuchi-Fujimoto disease(2008) Tüzün Y.; Bayan K.; Altintaş A.; Çil T.; Yilmaz Ş.; Dursun M.Kikuchi-Fujimoto disease (KFD), also called histiositic necrotizing lenfadenitis is a self limited disease, which commonly affects young Asian women. Etiology of KFD is unknown. The disease presents with lymphadenopathy, predominantly in the cervical region, fever, leucopenia and high erythrocyte sedimentation rate. It has occasionally been misdiagnosed as malignant lymphoma. The diagnosis of disease is confirmed by histopathological examination of affected lymph node. Herein, we reported a patient who presented with fever of unknown origin and diagnosed as KFD. We suggest that KFD needs to be considered as one of the differential diagnoses in patients presenting with fever of unknown origin and lymphadenopathy.
