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    The effect of exogen glutathione administration on the gastric mucosal barrier in rats under stress
    (1998) Kanay Z.; Sert C.; Isik B.; Kurt D.; Guzel C.; Mete N.
    We investigated the effect of glutathione (GSH) on the gastric mucosal barrier of rats under stress. Twenty two swiss Albino rats weighing between 150-200 g were used and stress was induced by cold and immobilisation. GSH was administered in 300 mg/kg doses to the study group and oral saline was given to a control group. Mucus and phospholipid levels of the gastric mucosal barrier were then measured using come and Baur's methods. These important components of the gastric mucosal barrier were found to be decreased (p<0.05), but levels were higher in rats given GSH than in the control group (p<0.01, p<0.05 respectively). To conclude, GSH was found to be effective in preventing gastric mucosal barrier damage caused by stress.
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    Rate of microscopic colitis and cytokine levels in patients with irritable bowel syndrome
    (Acta Medica Mediterranea, 2015) Uçmak F.; Göral V.; Firat U.; Mete N.
    Aims: The aim of this study is to determine the rate of microscopic colitis (MC) among patients diagnosed as Irritable Bowel Syndrome (IBS) in accordance with Roma III criteria and to investigate the correlation of cytokine levels with the type of IBS and presence of MC. Methodology: A total of Eighty-nine patients who were diagnosed with IBS based on Rome III diagnostic criteria were included in this study. Biopsies taken from caecum, ascending colon, transverse colon, descending colon and rectosigmoid region during colonoscopy were put in separate tubes and histopathologically examined. In addition, serum TNF-?, IL-1? and IL-6 levels were determined in peripheral blood samples of patients. Results: The frequency of MC was higher in the study groups compared to the general population (22.5% and 20.4% in IBS-D and IBS-C groups, respectively). Specimens taken from caecum, ascending colon, transverse colon and descending colon were more likely to lead to the diagnosis of MC compared to those taken from rectrosigmoid region (p<0.001). No significant difference was found between presence of MC and IL-1?, IL-6 and TNF-? levels. In addition, TNF-? levels were significantly higher in the IBS-C group (p= 0.013). Conclusion: Rate of MC in IBS patients is higher than the rate in normal population. In IBS patients, biopsy samples obtained solely from rectosigmoid area is not sufficient to preclude MC diagnosis. No difference exists between IBS patients with and without MC in terms of cytokine levels.
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    Serum osteocalcin, bone alkaline phosphatase and cathepsin k levels of patients with postmenopausal ra: Correlation with disease activity and joint damage
    (Acta Medica Mediterranea, 2014) Batmaz I.; Çakirca G.; Sariyildiz M.A.; Dilek B.; Mete N.; Hamidi C.; Bozkurt M.
    Objective: To investigate serum levels of osteocalcin (OC), bone alkaline phosphatase (BALP) and cathepsin K in patients with postmenopausal rheumatoid arthritis (RA) and to evaluate the relationship between these markers and disease activity and radiological joint damage. Material and methods: Forty six postmenopausal women diagnosed with RA according to the criteria of American College of Rheumatology and 42 postmenopausal healthy women who have similar age range with the patient group were involved into the study. Disease activity was measured with Disease Activity Score (DAS 28). Furthermore, Larsen score was used to evaluate radiological damage. Results: OC and BALP levels were not different between postmenopausal patients with RA and control group (p >0.05). However, levels of cathepsin K were elevated in serum of the patients with postmenopausal RA when compared with that of the healthy control group (p<0.05). In addition, the elevated serum levels of cathepsin K were positively correlated with disease activity and joint destruction (p<0.05). No significant relationship was observed between OC and BALP levels and disease activity and joint destruction (p >0.05). Conclusions: Cathepsin K may be a valuable parameter to assess disease prognosis in postmenopausal RA.