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    Dynamic thiol disulphide homeostasis in operating theater personnel exposed to anesthetic gases
    (Wiley, 2017) Kozanhan, Betul; Inanli, Ikbal; Deniz, Cigdem Damla; Iyisoy, Mehmet Sinan; Neselioglu, Salim; Sahin, Osman; Akin, Fatma
    Background: The purpose of this study was to investigate the association between dynamic thiol/disulphide homeostasis and occupational exposure to volatile anesthetic gases in operating theater personnel. Decreased blood thiol levels and raised blood disulphide levels serve as biomarkers of oxidative stress. Methods: Weincluded 65 subjects occupationally exposed and 55 unexposed healthy medical professionals into the study. A novel method enabled separate measurements of components involved in dynamic thiol/disulphide homeostasis (native thiol, disulphide, and total thiol). To control for the potential confounding effect on oxidative stress of psychological symptoms potentially caused by occupational stress, we used scores obtained from four different anxiety and depression inventories. Results: Mean +/- standard deviation native thiol was found to be 433.35 +/- 30.68 in the exposed group, lower than among controls, 446.61 +/- 27.8 (P = 0.02). Disulphide in the exposed group was 15.78 +/- 5.12, higher than among controls, 12.14 +/- 5.33 (P < 0.001). After adjusting for anxiety and depression scores, age and gender, native thiol remained lower and disulphide higher in the exposed group (P = 0.008 and P < 0.001). Conclusion: Dynamic thiol/disulphide homeostasis in workers exposed to anesthetic gases was found to be disturbed after adjusting for the possible contribution of anxiety. We infer that this is due to the oxidative effect of exposure to anesthetic gases.
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    Ganglion cell complex thickness changes in patients with different states of bipolar disorder
    (Springernature, 2022) Cokunlu, Yusuf; Mirza, Enver; Caliskan, Ali Metehan; Inanli, Ikbal; Cicek, Ismet Esra; Ozcimen, Muammer; Eren, Ibrahim
    Objectives Neuroimaging studies in patients with bipolar disorder have suggested that a neuropathological process may be effective in this disease. Neurodegenerative changes in the retina can be followed by optical coherence tomography, a non-invasive imaging method that allows in vivo visualization of the retinal layers. The aim of this study was to investigate the possible differences in optical coherence tomography parameters during euthymic, manic, and depressive episodes in patients diagnosed with bipolar disorder. Methods A total of 150 patients with bipolar disorder were included in the study, divided into three groups (50 patients in a euthymic state, 50 patients in a manic state, and 50 patients in a depressive state) and compared with 50 healthy controls. Ganglion cell complex thickness was measured with automated macular segmentation software of spectral-domain optical coherence tomography. Results Ganglion cell complex thicknesses were thicker in all quadrants in patient groups than the control group but the differences were significant in perifoveal superior and perifoveal inferior quadrants (p < 0.001, p < 0.001). There were no differences in ganglion cell complex thickness among the patient groups (p > 0.05). Conclusion The evaluation of ganglion cell complex thickness by spectral-domain optical coherence tomography may give a clue for monitoring neurodegenerative changes in patients with bipolar disorder.