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DEMİRCAN, CELALEDDİN

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DEMİRCAN

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CELALEDDİN

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2009 - 200912010 - 20201
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    Aging protects rat cortical slices against to oxygen-glucose deprivation induced damage
    (Taylor & Francis, 2020-02-22) Gul, Zulfiye; Buyukuysal, Rifat Levent; Demircan, Celaleddin; DEMİRCAN, CELALEDDİN; Bagdas, Deniz; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Farmakoloji Anabilim Dalı.; HJZ-4470-2023
    Objective: In present study, we aimed to clarify effect of aging on the susceptibility of brain tissue to neurodegeneration induced by ischemia. Methods: Damage induced by oxygen-glucose deprivation (OGD) followed by reoxygenation (REO) were compared in cortical slices prepared from young (3 months of age) and aged (22-24 months of age) male Sprague Dawley rats. Results: After incubation of the slices in an oxygen and glucose containing control condition, 2,3,5-triphenyl tetrazolium chloride (TTC) staining intensity was found significantly high in aged cortical slices. Although thirty minutes incubation of the slices in OGD medium followed by REO (OGD-REO) caused similar decline in TTC staining in young and aged cortical slices, staining intensity was still significantly higher in the slices prepared from aged animals. Thirty minutes of OGD-REO, on the other hand, also caused more increase in lactate dehydrogenase (LDH) leakage from young slices. While water contents of the slices were almost equal under control condition, it was significantly high in young cortical slices after OGD-REO incubations. In contrary to these findings, OGD and REO caused more increases in S100B output from aged rat cortical slices. S100B levels in brain regions including the cerebral cortex were also found higher in aged rats. Conclusion: All these results indicate that, cortical slices prepared from aged male rats are significantly less responsive to in vitro OGD-REO induced alterations. Since protein S100B outputs were almost doubled from aged cortical slices, a possible involvement of this enhanced S100B output seems to be likely.
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    Analysis of acute adult poisoning cases among patients admitted to the emergency department in Bursa, Turkey
    (Galenos Yayınevi, 2009-01-01) Demircan, Celaleddin; Kahveci, Ferda; Engindeniz, Zülfi; Kıyıcı, Murat; Girgin, Nermin Kelebek; Ercan, İlker; Tekce, Hikmet; Özdemir, Fatma; Özyurt, Gurayten; DEMİRCAN, CELALEDDİN; KAHVECİ, FERDA ŞÖHRET; Engindeniz, Zülfi; KIYICI, MURAT; KELEBEK GİRGİN, NERMİN; ERCAN, İLKER; Tekce, Hikmet; ÖZDEMİR, FATMA; Özyurt, Gurayten; Uludağ Üniversitesi/Tıp Fakültesi/Dahili Tıp Bilimleri Anabilim Dalı.; Uludağ Üniversitesi/Tıp Fakültesi/Anesteziyoloji ve Reanimasyon Anabilim Dalı.; Uludağ Üniversitesi/Tıp Fakültesi/Acil Tıp Anabilim Dalı.; Uludağ Üniversitesi/Tıp Fakültesi/Gastroenteroloji ve Hepatoloji Anabilim Dalı.; Uludağ Üniversitesi/Tıp Fakültesi/Biyoistatistik Anabilim Dalı.; 0000-0003-4820-2288; 0000-0003-1874-5097; 0000-0002-3208-6211; 0000-0002-2382-290X; HJZ-4470-2023; AAG-9356-2021; JBJ-5787-2023; AAI-4213-2021; AAH-7250-2019; ABF-2367-2020; JGP-4019-2023; JKS-7683-2023; JKO-9428-2023
    Purpose: The aim of this study was to define the epidemiological features such as age, sex, toxic substance, suicide, and mortality rates of the adult poisoning cases among patients admitted to the Emergency Department (ED) of Uludag University Medical Faculty Hospital.Materials and Methods: Records of acute adult poisoning cases at the ED within a one-year period (June 1, 2002 - May 31, 2003) were evaluated retrospectively. Data were compared to those of similar studies from Turkey and around the world.Results: In total 430 (1.96%) of 21,934 patients admitted to the ED during the study period suffered acute poisoning. Of these patients 259 (60.2%) were women and 171 (39.8%) were men and the mean age of the patients was 29.9. Patients were exposed to different types of toxic substances: drugs (47.4%), pesticides (10.7%), toxic gases (10%), corrosives (6.5%), alcohol (3.5%), food (15.8%), toxic substances of animal origin (3.0%), and others (3.0%). In all, 29.8% of the patients were admitted to hospital, 22.3% were transferred to other hospitals, and 47.9% were discharged from the ED, and the overall mortality rate was 1.2%. In addition, 54.9% of the poisonings were suicide attempts and within this group the women to men ratio was 2.2 and the most common toxic substance was a drug (85.2%).Conclusion: Our results were similar to those of previous studies from this country as acute poisonings are more common in women and younger ages, most of them were suicide attempts, and the mortality rate was low. Our transfer rate was high and this may necessitate the organization of short-term observation of these patients.