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Gurel A, Elmaagac B, Oner S. Evaluating the effect of sleep quality and chronotype differences on erectile dysfunction. Eur Rev Med Pharmacol Sci 2023; 27:2770-2775. [PMID: 37070877 DOI: 10.26355/eurrev_202304_31907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
OBJECTIVE Erectile dysfunction (ED) refers to an inability to achieve or maintain a firm penile erection sufficient for satisfactory sexual intercourse. Insufficient, irregular sleep and sleep disorders adversely affect human health, including sexual function. Significant differences between biological rhythms (chronotypes) have been reported. In the present study we examine the effect of sleep quality and chronotype differences on ED patients and a control group. PATIENTS AND METHODS The study included 69 patients who presented with ED and 64 healthy controls. The respondents completed a sociodemographic data form, and disease severity in the ED group was measured using the International Index of Erectile Function (IIEF). The participants were further administered the Hospital Anxiety and Depression Scale (HADS), Insomnia Severity Index (ISI), Pittsburgh Sleep Quality Index (PSQI) and Morningness-Eveningness Questionnaire (MEQ), and the scale scores were compared statistically between the patient and control groups. RESULTS There was no difference in the age, body mass index (BMI), alcohol use and smoking of the ED and healthy control groups, while the IIEF score was significantly lower in the ED group than in the control group. The PSQI subscale scores other than for sleep duration subscale, the PSQI global score and the HADS score were higher in the ED group than in the control group, while there was no difference between the groups in the MEQ and ISI scores. The IIEF score was correlated with the PSQI and HADS scores, and the PSQI score with the ISI and HADS scores. CONCLUSIONS It would be useful to evaluate sleep quality in addition to anxiety and depression while evaluating patients with ED. Our study found no relationship between chronotype differences and ED.
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Affiliation(s)
- A Gurel
- Department of Urology, Afyonkarahisar Health Science University, Afyonkarahisar, Turkey.
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Ipek V, Kaya K, Cebi C, Gurel A, Ayozger LEO. Effects of fish oil on
methotrexate‐induced
reproductive damage in rats. Andrologia 2022; 54:e14638. [DOI: 10.1111/and.14638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 10/18/2022] [Accepted: 10/29/2022] [Indexed: 11/13/2022] Open
Affiliation(s)
- Volkan Ipek
- Faculty of Veterinary Medicine, Department of Pathology Burdur Mehmet Akif Ersoy University Burdur Turkey
| | - Kursat Kaya
- Faculty of Medicine, Department of Medical Biochemistry Pamukkale University Denizli Turkey
| | - Cigdem Cebi
- Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination Harran University Şanlıurfa Turkey
| | - Ali Gurel
- Faculty of Medicine, Department of Internal Medicine, Department of Nephrology Firat University Elazig Turkey
| | - Leyla Elif Ozgu Ayozger
- Faculty of Veterinary Medicine, Department of Pathology Burdur Mehmet Akif Ersoy University Burdur Turkey
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Gurel SG, Sogut I, Hurdag C, Gurel A, Tutar A, Cikler-Dulger E. Effect of fulvic acid on gastric mucosa damage caused by chronic water avoidance stress. Biotech Histochem 2021; 97:199-206. [PMID: 34100319 DOI: 10.1080/10520295.2021.1926541] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
We investigated the antioxidant and anti-ulcerogenic effects of fulvic acid (FA) on oxidative damage caused by water avoidance stress (WAS) in rat gastrointestinal mucosa. Three experimental groups were established: control (C), chronic stress (CS), and chronic stress + FA (CS + FA). After WAS, a single dose of FA was administered for 10 days to the CS + FA group. Samples of the pyloric region of the stomach were stained with hematoxylin and eosin (H & E) and periodic acid-Schiff (PAS). Immunohistochemical staining was performed for inducible nitric oxide synthase (iNOS) and endothelial nitric oxide synthase (eNOS). Total antioxidant status (TAS), total oxidant status (TOS), oxidative stress index (OSI), superoxide dismutase (SOD), glutathione peroxidase (GPx), and catalase (CAT) levels were measured biochemically. By light microscopy, we observed loss of gastric epithelial cells and greater polymorphonuclear cell migration into the mucosa in the CS group compared to the C group. We found intact epithelial cell structure and a thick superficial mucus layer in the CS + FA group compared to the CS group. These findings in the CS + FA group were similar to those for group C. iNOS staining was stronger in the CS group compared to the C group. TOS and OSI levels in the CS + FA group were decreased compared to the CS group, but TAS, SOD, GPx and CAT levels were increased. We found that WAS caused damage to epithelium and connective tissue of the stomach mucosa and that this damage was prevented by FA. Therefore, administration of FA appears to prevent stress induced damage to rat stomach.
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Affiliation(s)
- Sezen Gizem Gurel
- Faculty of Medicine, Department of Histology and Embryology, Demiroglu Bilim University, Istanbul, Turkey
| | - Ibrahim Sogut
- Faculty of Medicine, Department of Biochemistry, Demiroglu Bilim University, Istanbul, Turkey
| | - Canan Hurdag
- Faculty of Medicine, Department of Histology and Embryology, Demiroglu Bilim University, Istanbul, Turkey
| | - Ali Gurel
- Istanbul Forest Management, Marmara Forestry Research Institute, Istanbul, Turkey
| | - Ahmet Tutar
- Faculty of Science Department of Chemistry, Sakarya University, Sakarya, Turkey
| | - Esra Cikler-Dulger
- Hamidiye Medical School, Department of Histology and Embryology, University of Health Science, Istanbul, Turkey
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Ozen A, Cakmak E, Bilen N, Akel M, Gurel A, Selcuk M. Investigation of sarcopenia in hemodialysis patients in Adiyaman province. Med-Science 2021. [DOI: 10.5455/medscience.2021.01.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Ozturk S, Turgutalp K, Arici M, Odabas AR, Altiparmak MR, Aydin Z, Cebeci E, Basturk T, Soypacaci Z, Sahin G, Elif Ozler T, Kara E, Dheir H, Eren N, Suleymanlar G, Islam M, Ogutmen MB, Sengul E, Ayar Y, Dolarslan ME, Bakirdogen S, Safak S, Gungor O, Sahin I, Mentese IB, Merhametsiz O, Oguz EG, Genek DG, Alpay N, Aktas N, Duranay M, Alagoz S, Colak H, Adibelli Z, Pembegul I, Hur E, Azak A, Taymez DG, Tatar E, Kazancioglu R, Oruc A, Yuksel E, Onan E, Turkmen K, Hasbal NB, Gurel A, Yelken B, Sahutoglu T, Gok M, Seyahi N, Sevinc M, Ozkurt S, Sipahi S, Bek SG, Bora F, Demirelli B, Oto OA, Altunoren O, Tuglular SZ, Demir ME, Ayli MD, Huddam B, Tanrisev M, Bozaci I, Gursu M, Bakar B, Tokgoz B, Tonbul HZ, Yildiz A, Sezer S, Ates K. Mortality analysis of COVID-19 infection in chronic kidney disease, haemodialysis and renal transplant patients compared with patients without kidney disease: a nationwide analysis from Turkey. Nephrol Dial Transplant 2020; 35:2083-2095. [PMID: 33275763 PMCID: PMC7716804 DOI: 10.1093/ndt/gfaa271] [Citation(s) in RCA: 122] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 10/01/2020] [Indexed: 02/06/2023] Open
Abstract
Background Chronic kidney disease (CKD) and immunosuppression, such as in renal transplantation (RT), stand as one of the established potential risk factors for severe coronavirus disease 2019 (COVID-19). Case morbidity and mortality rates for any type of infection have always been much higher in CKD, haemodialysis (HD) and RT patients than in the general population. A large study comparing COVID-19 outcome in moderate to advanced CKD (Stages 3–5), HD and RT patients with a control group of patients is still lacking. Methods We conducted a multicentre, retrospective, observational study, involving hospitalized adult patients with COVID-19 from 47 centres in Turkey. Patients with CKD Stages 3–5, chronic HD and RT were compared with patients who had COVID-19 but no kidney disease. Demographics, comorbidities, medications, laboratory tests, COVID-19 treatments and outcome [in-hospital mortality and combined in-hospital outcome mortality or admission to the intensive care unit (ICU)] were compared. Results A total of 1210 patients were included [median age, 61 (quartile 1–quartile 3 48–71) years, female 551 (45.5%)] composed of four groups: control (n = 450), HD (n = 390), RT (n = 81) and CKD (n = 289). The ICU admission rate was 266/1210 (22.0%). A total of 172/1210 (14.2%) patients died. The ICU admission and in-hospital mortality rates in the CKD group [114/289 (39.4%); 95% confidence interval (CI) 33.9–45.2; and 82/289 (28.4%); 95% CI 23.9–34.5)] were significantly higher than the other groups: HD = 99/390 (25.4%; 95% CI 21.3–29.9; P < 0.001) and 63/390 (16.2%; 95% CI 13.0–20.4; P < 0.001); RT = 17/81 (21.0%; 95% CI 13.2–30.8; P = 0.002) and 9/81 (11.1%; 95% CI 5.7–19.5; P = 0.001); and control = 36/450 (8.0%; 95% CI 5.8–10.8; P < 0.001) and 18/450 (4%; 95% CI 2.5–6.2; P < 0.001). Adjusted mortality and adjusted combined outcomes in CKD group and HD groups were significantly higher than the control group [hazard ratio (HR) (95% CI) CKD: 2.88 (1.52–5.44); P = 0.001; 2.44 (1.35–4.40); P = 0.003; HD: 2.32 (1.21–4.46); P = 0.011; 2.25 (1.23–4.12); P = 0.008), respectively], but these were not significantly different in the RT from in the control group [HR (95% CI) 1.89 (0.76–4.72); P = 0.169; 1.87 (0.81–4.28); P = 0.138, respectively]. Conclusions Hospitalized COVID-19 patients with CKDs, including Stages 3–5 CKD, HD and RT, have significantly higher mortality than patients without kidney disease. Stages 3–5 CKD patients have an in-hospital mortality rate as much as HD patients, which may be in part because of similar age and comorbidity burden. We were unable to assess if RT patients were or were not at increased risk for in-hospital mortality because of the relatively small sample size of the RT patients in this study.
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Affiliation(s)
- Savas Ozturk
- Department of Nephrology, University of Health Sciences, Haseki Training and Research Hospital, Istanbul, Turkey
| | - Kenan Turgutalp
- Department of Internal Medicine, Division of Nephrology, Faculty of Medicine, Mersin University Training and Research Hospital, Mersin, Turkey
| | - Mustafa Arici
- Department of Nephrology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Ali Riza Odabas
- Department of Nephrology, University of Health Sciences, Sultan 2.Abdulhamid Han Training and Research Hospital, Istanbul, Turkey
| | - Mehmet Riza Altiparmak
- Department of Internal Medicine, Division of Nephrology, Istanbul University - Cerrahpasa Cerrahpasa Faculty of Medicine, Istanbul, Turkey
| | - Zeki Aydin
- Department of Nephrology, Darica Farabi Training and Research Hospital, Kocaeli, Turkey
| | - Egemen Cebeci
- Department of Nephrology, University of Health Sciences, Haseki Training and Research Hospital, Istanbul, Turkey
| | - Taner Basturk
- Department of Nephrology, Sisli Hamidiye Etfal Training and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Zeki Soypacaci
- Department of Internal Medicine, Division of Nephrology, Izmir Katip Celebi University, Atatürk Training and Research Hospital, Izmir, Turkey
| | - Garip Sahin
- Department of Internal Medicine, Division of Nephrology, Faculty of Medicine, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Tuba Elif Ozler
- Department of Internal Medicine, Division of Nephrology, University of Health Sciences, Kanuni Sultan Suleyman Training and Research Hospital, Istanbul, Turkey
| | - Ekrem Kara
- Department of Internal Medicine, Division of Nephrology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Hamad Dheir
- Department of Internal Medicine, Division of Nephrology, Sakarya University Training and Research Hospital, Sakarya, Turkey
| | - Necmi Eren
- Department of Nephrology, Faculty of Medicine, Kocaeli University, Kocaeli, Turkey
| | - Gultekin Suleymanlar
- Department of Internal Medicine, Division of Nephrology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Mahmud Islam
- Department of Nephrology, Zonguldak Ataturk State Hospital, Zonguldak, Turkey
| | - Melike Betul Ogutmen
- Department of Nephrology, University of Health Sciences, Haydarpasa Numune Training and Research Hospital, Istanbul, Turkey
| | - Erkan Sengul
- Department of Nephrology, University of Health Sciences, Kocaeli Derince Training and Research Hospital, Kocaeli, Turkey
| | - Yavuz Ayar
- Department of Nephrology, Bursa City Hospital, Bursa, Turkey
| | - Murside Esra Dolarslan
- Department of Nephrology, University of Health Sciences, Trabzon Kanuni Training and Research Hospital, Trabzon, Turkey
| | - Serkan Bakirdogen
- Department of Internal Medicine, Division of Nephrology, Canakkale Onsekiz Mart University, Canakkale, Turkey
| | - Seda Safak
- Department of Internal Medicine, Division of Nephrology, Istanbul University Faculty of Medicine, Istanbul, Turkey
| | - Ozkan Gungor
- Department of Nephrology, Kahramanmaras Sutcu Imam University Faculty of Medicine, Kahramanmaras, Turkey
| | - Idris Sahin
- Department of Internal Medicine, Division of Nephrology, Inonu University Faculty of Medicine, Turgut Ozal Medical Center, Malatya, Turkey
| | - Ilay Berke Mentese
- Department of Internal Medicine, Division of Nephrology, Marmara University Faculty of Medicine, Marmara University Pendik Training and Research Hospital, Istanbul, Turkey
| | - Ozgur Merhametsiz
- Department of Internal Medicine, Division of Nephrology, Yeni Yuzyil University Faculty of Medicine, Istanbul, Turkey
| | - Ebru Gok Oguz
- Department of Nephrology, University of Health Sciences, Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
| | - Dilek Gibyeli Genek
- Department of Internal Medicine, Division of Nephrology, Mugla Sitki Kocman University Faculty of Medicine, Training and Research Hospital, Mugla, Turkey
| | - Nadir Alpay
- Department of Internal Medicine, Division of Nephrology, Memorial Hizmet Hospital, Istanbul, Turkey
| | - Nimet Aktas
- Department of Nephrology, University of Health Sciences, Bursa Higher Specialization Training and Research Hospital, Bursa, Turkey
| | - Murat Duranay
- Department of Nephrology, University of Health Sciences, Ankara Training and Research Hospital, Ankara, Turkey
| | - Selma Alagoz
- Department of Internal Medicine, Division of Nephrology, University of Health Sciences, Bagcilar Training and Research Hospital, Istanbul, Turkey
| | - Hulya Colak
- Department of Internal Medicine, Division of Nephrology, University of Health Sciences, Training and Research Hospital, Izmir, Turkey
| | - Zelal Adibelli
- Department of Internal Medicine, Division of Nephrology, Faculty of Medicine, Usak University, Usak, Turkey
| | - Irem Pembegul
- Department of Nephrology, Malatya Training and Research Hospital, Malatya, Turkey
| | - Ender Hur
- Department of Nephrology, Manisa Merkezefendi State Hospital, Manisa, Turkey
| | - Alper Azak
- Department of Nephrology, Balıkesir Ataturk City Hospital, Balikesir, Turkey
| | | | - Erhan Tatar
- Department of Nephrology, University of Health Sciences, Izmir Bozyaka Training and Research Hospital, Izmir, Turkey
| | - Rumeyza Kazancioglu
- Department of Internal Medicine, Division of Nephrology, Bezmialem Vakif University Faculty of Medicine, Istanbul, Turkey
| | - Aysegul Oruc
- Department of Nephrology, Bursa Uludag University Faculty of Medicine, Bursa, Turkey
| | - Enver Yuksel
- Department of Nephrology, University of Health Sciences, Diyarbakır Gazi Yasargil Training and Research Hospital, Diyarbakir, Turkey
| | - Engin Onan
- Department of Nephrology, Adana City Training and Research Hospital, Adana, Turkey
| | - Kultigin Turkmen
- Department of Nephrology, Necmettin Erbakan University Meram Faculty of Medicine, Konya, Turkey
| | | | - Ali Gurel
- Department of Internal Medicine, Division of Nephrology, Firat University Faculty of Medicine, Elazig, Turkey
| | - Berna Yelken
- Department of Transplantation, Koc University Hospital, Istanbul, Turkey
| | - Tuncay Sahutoglu
- Department of Nephrology, University of Health Sciences, Mehmet Akif Inan Training and Research Hospital, Sanliurfa, Turkey
| | - Mahmut Gok
- Department of Nephrology, University of Health Sciences, Sultan 2.Abdulhamid Han Training and Research Hospital, Istanbul, Turkey
| | - Nurhan Seyahi
- Department of Internal Medicine, Division of Nephrology, Istanbul University - Cerrahpasa Cerrahpasa Faculty of Medicine, Istanbul, Turkey
| | - Mustafa Sevinc
- Department of Nephrology, Sisli Hamidiye Etfal Training and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Sultan Ozkurt
- Department of Internal Medicine, Division of Nephrology, Faculty of Medicine, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Savas Sipahi
- Department of Internal Medicine, Division of Nephrology, Sakarya University Faculty of Medicine, Training and Research Hospital, Sakarya, Turkey
| | - Sibel Gokcay Bek
- Department of Nephrology, Faculty of Medicine, Kocaeli University, Kocaeli, Turkey
| | - Feyza Bora
- Department of Internal Medicine, Division of Nephrology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Bulent Demirelli
- Department of Nephrology, University of Health Sciences, Haydarpasa Numune Training and Research Hospital, Istanbul, Turkey
| | - Ozgur Akin Oto
- Department of Internal Medicine, Division of Nephrology, Istanbul University Faculty of Medicine, Istanbul, Turkey
| | - Orcun Altunoren
- Department of Nephrology, Kahramanmaras Sutcu Imam University Faculty of Medicine, Kahramanmaras, Turkey
| | - Serhan Zubeyde Tuglular
- Department of Internal Medicine, Division of Nephrology, Marmara University Faculty of Medicine, Marmara University Pendik Training and Research Hospital, Istanbul, Turkey
| | - Mehmet Emin Demir
- Department of Internal Medicine, Division of Nephrology, Yeni Yuzyil University Faculty of Medicine, Istanbul, Turkey
| | - Mehmet Deniz Ayli
- Department of Nephrology, University of Health Sciences, Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
| | - Bulent Huddam
- Department of Internal Medicine, Division of Nephrology, Mugla Sitki Kocman University Faculty of Medicine, Training and Research Hospital, Mugla, Turkey
| | - Mehmet Tanrisev
- Department of Internal Medicine, Division of Nephrology, University of Health Sciences, Tepecik Training and Research Hospital, Izmir, Turkey
| | - Ilter Bozaci
- Department of Nephrology, University of Health Sciences, Izmir Bozyaka Training and Research Hospital, Izmir, Turkey
| | - Meltem Gursu
- Department of Internal Medicine, Division of Nephrology, Bezmialem Vakif University Faculty of Medicine, Istanbul, Turkey
| | - Betul Bakar
- Department of Nephrology, University of Health Sciences, Ankara Training and Research Hospital, Ankara, Turkey
| | - Bulent Tokgoz
- Department of Nephrology, Erciyes University Faculty of Medicine, Kayseri, Turkey
| | - Halil Zeki Tonbul
- Department of Nephrology, Adana City Training and Research Hospital, Adana, Turkey
| | - Alaattin Yildiz
- Department of Internal Medicine, Division of Nephrology, Istanbul University Faculty of Medicine, Istanbul, Turkey
| | - Siren Sezer
- Department of Internal Medicine, Division of Nephrology, Atilim University Faculty of Medicine, Istanbul, Turkey
| | - Kenan Ates
- Department of Internal Medicine, Division of Nephrology, Ankara University Faculty of Medicine Ankara, Turkey
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Yilmaz A, Turan N, Bayraktar E, Gurel A, Cizmecigil UY, Aydin O, Bamac OE, Cecchinato M, Franzo G, Tali HE, Cakan B, Savic V, Richt JA, Yilmaz H. Phylogeny and evolution of infectious bursal disease virus circulating in Turkish broiler flocks. Poult Sci 2019; 98:1976-1984. [PMID: 30668778 PMCID: PMC6448131 DOI: 10.3382/ps/pey551] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 11/28/2018] [Indexed: 12/18/2022] Open
Abstract
The emergence of new infectious bursal disease virus (IBDV) variants can threaten poultry health and production all over the world causing significant economic losses. Therefore, this study was performed to determine IBDV molecular epidemilogy, VP2 gene variation, and corresponding pathological lesions in IBDV infected chickens in Turkey. For this, 1855 bursa of Fabricius samples were collected from 371 vaccinated broiler flocks. Atrophia and haemorrhages were seen in the bursa Fabricius of very virulent IBDV (vvIBDV) infected chickens. Partial VP2 gene was sequenced and phylogenetic, recombination, and evolutionary analyses were performed. 1548 (83.5%) out of 1855 of bursa of Fabricius samples were IBDV positive and 1525 of those could be sequenced. The recombination analysis did not detect occurrence of any recombination event among the Turkish strains. Among 1525 sequenced samples, 1380 of them were found to be classical strains. Among 1380 classical strains, 1317 were similar to IBDV 2512, 11 to Faragher 52/70, 40 to 228 E, and 12 to Lukert strain. Out of 1525 reverse transcriptase ploymerase chain reaction positive samples, 144 of them were found to be similar to vvIBDV-VP2 gene reported to GenBank previously. The phylogenetic tree performed on a broad sequence dataset demonstrated grouping of vvIBDV Turkish strains in three different clusters, including sequences collected also from Iraq and Kuwait (Cluster 1), Indian (Cluster 2), and a distinct Turkish-only cluster (Cluster 3). The evolutionary rate estimation on branches/clades including Turkish strain mirrored the expected one for RNA viruses and no significant differences were found among different considered branches. In conclusion, results of this study indicate that vvIBDV strains similar to those circulating in various countries in the Middle East are present and undergoing evolution in chickens from Turkish broiler flocks. This point needs to be taken into account in planning adequate control strategies.
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Affiliation(s)
- A Yilmaz
- Department of Virology, Veterinary Faculty, Istanbul University-Cerrahpasa, Avcilar, 34320 Istanbul, Turkey
| | - N Turan
- Department of Virology, Veterinary Faculty, Istanbul University-Cerrahpasa, Avcilar, 34320 Istanbul, Turkey
| | - E Bayraktar
- CEVA Animal Health, Iz Plaza Giz, Eski Büyükdere Caddesi, No-9, Kat-21, Maslak, Istanbul, Turkey
| | - A Gurel
- Department of Pathology, Veterinary Faculty, Istanbul University-Cerrahpasa, Avcilar, 34320 Istanbul, Turkey
| | - U Y Cizmecigil
- Department of Virology, Veterinary Faculty, Istanbul University-Cerrahpasa, Avcilar, 34320 Istanbul, Turkey
| | - O Aydin
- Department of Virology, Veterinary Faculty, Istanbul University-Cerrahpasa, Avcilar, 34320 Istanbul, Turkey
| | - O Erdogan Bamac
- Department of Pathology, Veterinary Faculty, Istanbul University-Cerrahpasa, Avcilar, 34320 Istanbul, Turkey
| | - M Cecchinato
- Dipartimento di Medicina Animale, Produzioni e Salute (MAPS), Università degli Studi di Padova, Agripolis - Viale dell'Università, 16, 35020 Legnaro (PD), Italia
| | - G Franzo
- Dipartimento di Medicina Animale, Produzioni e Salute (MAPS), Università degli Studi di Padova, Agripolis - Viale dell'Università, 16, 35020 Legnaro (PD), Italia
| | - H E Tali
- Department of Virology, Veterinary Faculty, Istanbul University-Cerrahpasa, Avcilar, 34320 Istanbul, Turkey
| | - B Cakan
- CEVA Animal Health, Iz Plaza Giz, Eski Büyükdere Caddesi, No-9, Kat-21, Maslak, Istanbul, Turkey
| | - V Savic
- Poultry Center, Croatian Veterinary Institute, Heinzelova 55, 10000 Zagreb, Croatia
| | - J A Richt
- Department of Diagnostic Medicine and Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan KS66506, USA
| | - H Yilmaz
- Department of Virology, Veterinary Faculty, Istanbul University-Cerrahpasa, Avcilar, 34320 Istanbul, Turkey
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Demir C, Dogantekin A, Gurel A, Aydin S, Celiker H. Is there a relationship between serum vaspin levels and insulin resistance in chronic renal failure? Pak J Med Sci 2019; 35:230-235. [PMID: 30881429 PMCID: PMC6408677 DOI: 10.12669/pjms.35.1.96] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Objective Chronic kidney disease (CKD) patients have insulin secretion disorders and resistance to insulin effects, that is responsible for the development of cardiovascular events. Vaspin is an adipocytokine that regulates glucose and lipid metabolism. We aimed to determine the serum vaspin levels and its relationship with insulin resistance in CKD patients. Methods In the study groups, serum vaspin levels, anthropometric parameters and routine blood tests were measured. The serum vaspin levels were examined by the enzyme-linked immunosorbent assay (ELISA) and insulin resistance was determined by the homeostasis model assessment of insulin resistance (HOMA-IR) formula. Results The serum vaspin, HOMA-IR index and insulin levels were observed significantly high in the CKD group in comparison with the control group. No correlation was found between the serum vaspin level and the anthropometric and metabolic values. The serum vaspin level was positively correlated with the fasting plasma glucose and age but without statistical significance. Conclusion Insulin resistance and hyperinsulinemia contribute to the development of cardiovascular complications in CKD. We consider that the increase in the serum vaspin level is a consequence of the reduced renal excretion in the CKD and increases in response to insulin resistance.
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Affiliation(s)
- Can Demir
- Can Demir Hayat Hospital, Internal Medicine Department, Gaziantep, Turkey
| | - Akif Dogantekin
- Akif Dogantekin Emek Hospital, Internal Medicine Department, Gaziantep, Turkey
| | - Ali Gurel
- Ali Gurel Adiyaman University Medical Faculty, Nephrology Department, Adiyaman, Turkey
| | - Suleyman Aydin
- Suleyman Aydin Department of Biochemistry, Firat University Medical Faculty, Elazig, Turkey
| | - Huseyin Celiker
- Huseyin Celiker Deparment of Nephrology, Firat University Medical Faculty, Elazig, Turkey
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Mertoglu C, Gunay M, Gurel A, Gungor M. Myo-inositol Oxygenase as a Novel Marker in the Diagnosis of Acute Kidney Injury. J Med Biochem 2018; 37:1-6. [PMID: 30581335 PMCID: PMC6294104 DOI: 10.1515/jomb-2017-0027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Accepted: 05/05/2017] [Indexed: 01/28/2023] Open
Abstract
Background Due to the lack of diagnostic efficiency of serum creatinine in acute kidney injury (AKI), there is a pressing need to develop novel diagnostic markers. Therefore, in this study, we evaluated myo–inositol oxygenase (MIOX), neutrophil gelatinase-associated lipocalin (NGAL) and cystatin C in terms of their applicability in the diagnosis of AKI. Methods We enrolled a total of 39 AKI patients and 38 healthy controls in the study. We compared the levels of serum MIOX, NGAL and cystatin C between the two groups. Results We found that the concentrations of serum creatinine, blood-urea nitrogen, MIOX and cystatin C were higher in the AKI group. According to the receiver operating characteristic analysis, the area under the curve (AUC) values were 0.694 (95% CI 0.579-0.794) for MIOX and 0.976 (95% CI; 0.912-0.997) for cystatin C. For MIOX, when the cut-off concentration was set to 77.3 pg/mL, the diagnostic sensitivity and specificity were found to be 53.8% (95% CI; 37.2-69.9) and 81.5 (95% CI; 65.7-92.3), respectively. For cystatin C, at the cut-off value of 14 mg/L, the diagnostic sensitivity and specificity were 94.8% (95% CI; 82.7-99.4) and 94.7 % (95% CI 82.3-99.4), respectively. Conclusion The measurement of serum MIOX and cystatin C levels is valuable for the diagnosis of AKI. Further research is needed for the evaluation of the potential use of MIOX as a kidney-specific enzyme in the early diagnosis of AKI.
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Affiliation(s)
- Cuma Mertoglu
- Department of Clinical Biochemistry, Faculty of Medicine, Erzincan University, Erzincan, Turkey
| | - Murat Gunay
- Department of Clinical Biochemistry, Faculty of Medicine, Erzincan University, Erzincan, Turkey
| | - Ali Gurel
- Department of Nephrology, Mengucek Gazi Training and Research Hospital, Erzincan, Turkey
| | - Mehmet Gungor
- Department of Clinical Biochemistry, Sivas State Hospital, Sivas, Turkey
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Aktas C, Erboga M, Fidanol Erboga Z, Bozdemir Donmez Y, Topcu B, Gurel A. Protective effects ofUrtica dioicaL. on experimental testicular ischaemia reperfusion injury in rats. Andrologia 2016; 49. [DOI: 10.1111/and.12636] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/11/2016] [Indexed: 11/30/2022] Open
Affiliation(s)
- C. Aktas
- Department of Histology and Embryology; Faculty of Medicine; University of Namik Kemal; Tekirdag Turkey
| | - M. Erboga
- Department of Histology and Embryology; Faculty of Medicine; University of Namik Kemal; Tekirdag Turkey
| | - Z. Fidanol Erboga
- Department of Histology and Embryology; Faculty of Medicine; University of Namik Kemal; Tekirdag Turkey
| | - Y. Bozdemir Donmez
- Technology Research and Development Application and Research Center; University of Trakya; Edirne Turkey
| | - B. Topcu
- Department of Biostatistics; Faculty of Medicine; University of Namik Kemal; Tekirdag Turkey
| | - A. Gurel
- Department of Biochemistry; Faculty of Medicine; University of Namik Kemal; Tekirdag Turkey
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10
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Dogantekin A, Gurel A, Ustundag B, Ilhan S, Elkiran ET. Oxidative stress and antioxidant parameters in neutropenic patients secondary to chemotherapy. Pak J Med Sci 2016; 32:309-13. [PMID: 27182229 PMCID: PMC4859012 DOI: 10.12669/pjms.322.9200] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2015] [Revised: 10/29/2015] [Accepted: 01/25/2016] [Indexed: 12/04/2022] Open
Abstract
OBJECTIVE Neutropenia is a serious adverse event that necessitates dosage reduction in patients receiving chemotherapy. In this study, we evaluated the oxidative stress and antioxidant parameters in neutropenic patients after chemotherapy both during the neutropenic period and after successful treatment of neutropenia with filgrastim. METHODS We studied paraoxonase (PON1), arylesterase (ARE), malondialdehyde (MDA), high-density lipoprotein (HDL), lactate dehydrogenase (LDH), and alkaline phosphatase (ALP) in addition to routine biochemical and hematologic parameters. SPSS 12.0 was used for statistical evaluation of data (SPSS, Chicago, IL, USA). RESULTS In our study, PON1, HDL, and LDH levels during the period of active neutropenia were statistically significantly higher than these levels were after resolution of neutropenia (P<0.05); MDA and ALP levels were statistically significantly lower during the period of active neutropenia (P<0.05). CONCLUSIONS Overall, free oxygen radicals (FOR) were increased and antioxidant parameters were decreased with resolution of neutropenia. This is probably due to FOR produced by the increased number of neutrophils rather than tumor burden.
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Affiliation(s)
- Akif Dogantekin
- Dr. Akif Dogantekin, MD. Department of Internal Medicine, Emek Hospital, Gaziantep, Turkey
| | - Ali Gurel
- Dr. Ali Gurel, MD. Mengucek Gazi Training and Research Hospital, Department of Nephrology, Erzincan, Turkey
| | - Bilal Ustundag
- Prof. Bilal Ustundag, MD. Department of Biochemistry, Firat University Medical School, Elazig, Turkey
| | - Selcuk Ilhan
- Selcuk Ilhan, MD. Associate Professor, Department of Pharmacology, Firat University Medical School, Elazig, Turkey
| | - Emin Tamer Elkiran
- Prof. Emin Tamer Elkiran, MD. Department of Medical Oncology, Inonu University Medical School, Malatya, Turkey
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Abstract
Methamphetamine (MA) may cause hepatotoxicity, rhabdomyolysis, acute kidney injury, and neurotoxicity separately or together. We report a patient admitted with muscle weakness, pain, and oliguria 1 week after MA use; requiring repeated hemodialysis (HD). Multisystem toxicity may develop as a result of MA use and appropriate treatment may be life saving.
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Affiliation(s)
- Ali Gurel
- Nephrology Department Mengucek Gazi Training and Research Hospital Erzincan Turkey
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12
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Gurel A. Acute kidney injury due to abdominal compartment syndrome caused by duodenal metastases of prostate cancer. Clin Case Rep 2015; 3:629-31. [PMID: 26273457 PMCID: PMC4527811 DOI: 10.1002/ccr3.305] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Revised: 05/06/2015] [Accepted: 05/07/2015] [Indexed: 11/09/2022] Open
Abstract
Organ dysfunctions caused by intraabdominal hypertension is named as abdominal compartment syndrome (ACS). A patient with prostate cancer admitted with dyspnea and oliguria. After decompression his health status improved. For patients with malignant disorders presented with oliguria and respiratory problems who have abdominal distension, ACS should be in mind.
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Affiliation(s)
- Ali Gurel
- Nephrology Department, Mengucek Gazi Training and Research Hospital Erzincan, Turkey
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Gurel A, Atli H, Kaya N, Onalan E, Kuloglu T, Aygen B. Effects of vitamin D on kidney histology and trpv1 channels in doxorubicin-induced nephropathy. Int J Clin Exp Med 2015; 8:13548-13555. [PMID: 26550293 PMCID: PMC4612978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2015] [Accepted: 08/06/2015] [Indexed: 06/05/2023]
Abstract
Doxorubicin (DXR) is an antineoplastic agent of the anthracycline group, and may show nephrotoxic effects in animal models and humans. We investigated changes in kidney tissue following doxorubicin treatment and the effects of vitamin D on kidney tissue and TRPV1 channels. In this study, 24 adult male Wistar Albino rats were used. The animals were divided into four groups of six animals. During the 14-day experiment period, Group I did not have any application. 200 IU/day cholecalciferol was administered orally to Group II. Group III received 10 mg/kg single dose of DXR intraperitoneally (IP); and Group IV had a single 10 mg/kg dose of IP DXR and 200 IU/day of oral cholecalciferol. At the end of the experiment, the rats were decapitated, and their kidney tissues were removed. TRPV1 expression and apoptosis were detected in the tissue section by using immunohistochemical, TUNEL and real time-PCR (RT-PCR) techniques. The findings were examined and photographed with BH2 Olympus photomicroscope. As result of immunohistochemical staining, RT-PCR and examination with light microscope, it was found that the TRPV 1 immunoreactivity of the DXR group decreased in comparison with the control group, and the vitamin D application did not reverse this effect. Apoptosis detected by the TUNEL method tended to increase in the doxorubicin group and was relatively reversed with the administration of vitamin D. Tissue malondialdehyde (MDA) levels were observed to correlate with the findings of apoptosis. This study showed that vitamin D has anti- apoptotic and antioxidant effects on kidney tissue after DXR-induced injury.
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Affiliation(s)
- Ali Gurel
- Nephrology Department, Mengucek Gazi Training and Research HospitalErzincan, Turkey
| | - Hasan Atli
- Internal Medicine Department, Firat University Medical SchoolElazig, Turkey
| | - Nalan Kaya
- Histology and Embryology Department, Firat University Medical SchoolElazig, Turkey
| | - Ebru Onalan
- Medical Biology Department, Firat University Medical SchoolElazig, Turkey
| | - Tuncay Kuloglu
- Histology and Embryology Department, Firat University Medical SchoolElazig, Turkey
| | - Bilge Aygen
- Nephrology Department, Firat University Medical SchoolElazig, Turkey
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Demirtas L, Degirmenci H, Akbas EM, Ozcicek A, Timuroglu A, Gurel A, Ozcicek F. Association of hematological indicies with diabetes, impaired glucose regulation and microvascular complications of diabetes. Int J Clin Exp Med 2015; 8:11420-11427. [PMID: 26379958 PMCID: PMC4565341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Accepted: 07/10/2015] [Indexed: 06/05/2023]
Abstract
In recent years, there has been renewed interest in hematological parameters as predictors of endothelial dysfunction and inflammation. The aim of our study is to evaluate the relationship between HbA1c and hematological indices, and to evaluate the relationship between these parameters and microvascular complications of diabetes. Three hundred and seven diabetic patients (124 male, 183 female; mean age 50.8±8.5), and 187 controls (76 male, 111 female; mean age 51.1±10.1) were included in the study. In the diabetic group, mean platelet volume (MPV), plateletcrit (PCT), platelet distribution width (PDW), white blood cell count (WBC), platelet count, platelet to lymphocyte ratio (PLR) and neutrophil to lymphocyte ratio (NLR) were significantly higher than the control group (P<0.05). Diabetic patients were divided into two group according to their HbA1c levels (Group 1; HbA1c <7 (n=82) and group 2; HbA1c ≥7 (n=225)). Mean platelet volume, PCT and PDW levels were significantly increased in group 2. Mean platelet volume was significantly increased in diabetic patients with retinopathy compared to those without retinopathy (P=0.006). The neutrophil to lymphocyte ratio and PLR levels were significantly higher in patients with nephropathy (P=0.004, P=0.004 respectively). There was statistically significant difference of lymphocyte count between patients with and without neuropathy. In correlation analysis, positive correlation between HbA1c and PCT (rs=0.192, P<0.001), HbA1c and PDW (rs=0.305, P<0.001), HbA1c and MPV (rs=0.352, P<0.001) were determined. In binary logistic regression analysis; WBC, PDW and PLR levels were found to be independently associated with diagnosis of diabetes while WBC, MPV, PLR and NLR levels were found to be independently associated with impaired glucose regulation. This study demonstrates that altered hematological indices are closely associated with HbA1c levels in individuals with and without diabetes and some of these parameters are associated with diabetic microvascular complications. These associations may be explained by connection between these easy accessible and inexpensive hematological indices and inflammation, tendency to coagulation and thrombosis in patients with diabetes.
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Affiliation(s)
- Levent Demirtas
- Department of Internal Medicine, Mengücek Gazi Training and Research Hospital, School of Medicine, Erzincan UniversityErzincan, Turkey
| | - Husnu Degirmenci
- Department of Cardiology, Mengücek Gazi Training and Research Hospital, School of Medicine, Erzincan UniversityErzincan, Turkey
| | - Emin Murat Akbas
- Department of Endocrinology, Mengücek Gazi Training and Research Hospital, School of Medicine, Erzincan UniversityErzincan, Turkey
| | - Adalet Ozcicek
- Department of Internal Medicine, Mengücek Gazi Training and Research Hospital, School of Medicine, Erzincan UniversityErzincan, Turkey
| | - Aysu Timuroglu
- Department of Internal Medicine, Mengücek Gazi Training and Research Hospital, School of Medicine, Erzincan UniversityErzincan, Turkey
| | - Ali Gurel
- Department of Nephrology, Mengücek Gazi Training and Research HospitalErzincan, Turkey
| | - Fatih Ozcicek
- Department of Internal Medicine, Mengücek Gazi Training and Research Hospital, School of Medicine, Erzincan UniversityErzincan, Turkey
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15
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Erboga M, Aktas C, Kurt O, Uygur R, Caglar V, Turan BC, Topcu B, Fidanol Erboga Z, Gurel A, Ozen OA. Protective effects of thymoquinone on experimental testicular ischaemia-reperfusion injury: an apoptotic, proliferative and biochemical study. Andrologia 2015; 48:222-30. [DOI: 10.1111/and.12436] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/31/2015] [Indexed: 11/30/2022] Open
Affiliation(s)
- M. Erboga
- Department of Histology and Embryology; Faculty of Medicine; University of Namik Kemal; Tekirdag Turkey
| | - C. Aktas
- Department of Histology and Embryology; Faculty of Medicine; University of Namik Kemal; Tekirdag Turkey
| | - O. Kurt
- Department of Urology; Faculty of Medicine; University of Namik Kemal; Tekirdag Turkey
| | - R. Uygur
- Department of Anatomy; Faculty of Medicine; University of Namik Kemal; Tekirdag Turkey
| | - V. Caglar
- Department of Anatomy; Faculty of Medicine; University of Namik Kemal; Tekirdag Turkey
| | - B. C. Turan
- Department of Anesthesiology and Reanimation; Faculty of Medicine; University of Namik Kemal; Tekirdag Turkey
| | - B. Topcu
- Department of Biostatistics; Faculty of Medicine; University of Namik Kemal; Tekirdag Turkey
| | - Z. Fidanol Erboga
- Department of Histology and Embryology; Faculty of Medicine; University of Namik Kemal; Tekirdag Turkey
| | - A. Gurel
- Department of Biochemistry; Faculty of Medicine; University of Namik Kemal; Tekirdag Turkey
| | - O. A. Ozen
- Department of Anatomy; Faculty of Medicine; University of Namik Kemal; Tekirdag Turkey
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Ugur S, Ulu R, Dogukan A, Gurel A, Yigit IP, Gozel N, Aygen B, Ilhan N. The renoprotective effect of curcumin in cisplatin-induced nephrotoxicity. Ren Fail 2015; 37:332-6. [PMID: 25594614 DOI: 10.3109/0886022x.2014.986005] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The polyphenol curcumin has several pharmacological effects, including antioxidant, anti-inflammatory and anti-cancer features. In this study, we evaluated the effects of curcumin in cisplatin-induced nephrotoxicity in rats. Male Wistar rats were divided into four groups: (1) control; (2) cisplatin (7 mg/kg body weight, intraperitoneal as a single dose); (3) curcumin (100 mg/kg via gavage, for 10 days); and (4) cisplatin and curcumin. The cisplatin-treated rats exhibited kidney injury manifested by increased serum urea and creatinine (p<0.05). The kidney tissue from the cisplatin treated rats also exhibited a significant increase in the malondialdehyde (MDA) levels (p<0.05). The treatment with curcumin prevented a rise in the serum urea, creatinine and MDA levels when compared to the control group kidneys (p<0.05). The analysis the nicotinamide phosphoribosyltransferase (NAMPT) and sirtuin (SIRT) proteins (SIRT1, SIRT3 and SIRT4), which play important roles in the resistance to stress and the modulation of the threshold of cell death, showed similar trends (p<0.05). In the cisplatin-only treated rats, the induced renal injury decreased the levels of the NAMPT and SIRT proteins. Conversely, the curcumin increased the levels of the NAMPT and SIRT proteins in the cisplatin-treated rats (p<0.05). These data suggest that curcumin can potentially be used to reduce chemotherapy-induced nephrotoxicity, thereby enhancing the therapeutic window of cisplatin.
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Affiliation(s)
- Sıddık Ugur
- Department of Nephrology, Medical Faculty, Firat University , Elazig , Turkey and
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Akkoyun DC, Akyuz A, Tulubas F, Altıntas N, Alpsoy S, Mutlu LC, Gurel A, Alp R. The serum copeptin levels in obstructive sleep apnea patients with prehypertensive. Eur Rev Med Pharmacol Sci 2015; 19:1721-1728. [PMID: 26004616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE Copeptin is a precursor of AVP, an antidiuretic hormone, plays a pivotal role in the maintenance of cardiovascular homeostasis. Obstructive sleep apnea syndrome (OSAS) is related to cardiovascular disease. We sought to evaluate the serum copeptin levels in newly diagnosed prehypertensive patients with OSAS. PATIENTS AND METHODS Eighty-four prehypertensive patients were evaluated using polysomnography and were divided into two groups, an OSAS (n = 41) group and a control (n = 43) group. Serum copeptin levels were measured using the ELISA method. RESULTS Copeptin levels were significantly higher in the OSAS group compared to the control group (146 [93-739] pg/ml vs. 111 [33-253] pg/ml, respectively, p < 0.001). A regression analysis revealed that the apnea hypopnea index (AHI) and the lowest SpO2 were related to serum copeptin levels (unstandardized β = 1.02 ± 0.40, p = 0.014 and unstandardized β = -3.1 ± 0.9, p = 0.048 respectively). CONCLUSIONS According to the results of our study, serum copeptin levels are higher in the prehypertensive patients with OSAS compared to those in the control group. Therefore, in assessing the severity of OSAS, serum copeptin levels can be a candidate for a biochemical marker in addition to polysomnographic findings.
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Affiliation(s)
- D C Akkoyun
- Departments of Cardiology, Faculty of Medicine, Namık Kemal University, Tekirdag, Turkey.
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Yigit IP, Celiker H, Dogukan A, Ilhan N, Gurel A, Ulu R, Aygen B. Can serum NGAL levels be used as an inflammation marker on hemodialysis patients with permanent catheter? Ren Fail 2014; 37:77-82. [PMID: 25347233 DOI: 10.3109/0886022x.2014.975133] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Neutrophil gelatinase-associated lipocalin (NGAL) is a member of lipocalin family and released from many tissues and cells. We aimed to investigate the relationship among serum NGAL levels, the inflammation markers (IL-6, hs-CRP, TNF-α) and different vascular access types used in dialysis patients. METHODS The study population included 90 patients and 30 healthy age-matched controls. The patients were divided into three groups (I, II, III) and group IV included the controls. In group I and II, the patients were with central venous permanent catheter and arterio-venous fistula, respectively. Group III included 30 patients with chronic renal failure. Hemogram, biochemical assays, ferritin, IL-6, hs-CRP, TNF-α, and NGAL were evaluated in all groups. RESULTS Serum NGAL levels were markedly higher in group I than in group II (7645.80 ± 924.61 vs. 4131.20 ± 609.87 pg/mL; p < 0.05). Positive correlation was detected between NGAL levels and duration of catheter (r: 0.903, p: 0.000), hs-CRP (r: 0.796, p: 0.000), IL-6 (r: 0.687, p: 0.000), TNF-α (r: 0.568, p: 0.000) levels and ferritin (r: 0.318, p: 0.001), whereas NGAL levels were negatively correlated with serum albumin levels (r: -0.494, p: 0.000). In multiple regression analysis, duration of catheter hs-CRP and TNF-α were predictors of NGAL in hemodialysis patients. CONCLUSION Inflammation was observed in hemodialysis patients and increases with catheter. Our findings show that a strong relationship among serum NGAL levels, duration of catheter, hs-CRP and TNF-α. NGAL may be used as a new inflammation marker in hemodialysis patients.
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Kuloglu T, Aydin S, Eren MN, Yilmaz M, Sahin I, Kalayci M, Sarman E, Kaya N, Yilmaz OF, Turk A, Aydin Y, Yalcin MH, Uras N, Gurel A, Ilhan S, Gul E, Aydin S. Irisin: a potentially candidate marker for myocardial infarction. Peptides 2014; 55:85-91. [PMID: 24576483 DOI: 10.1016/j.peptides.2014.02.008] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Revised: 02/06/2014] [Accepted: 02/07/2014] [Indexed: 12/30/2022]
Abstract
Myocardial infarction (MI) causes energy depletion through imbalance between coronary blood supply and myocardial demand. Irisin produced by the heart reduces ATP production by increasing heat generation. Energy depletion affects irisin concentration in circulation and cardiac tissues, suggesting an association with MI. We examined: (1) irisin expression immunohistochemically in rat heart, skeletal muscle, kidney and liver in isoproterenol (ISO)-induced MI, and (2) serum irisin concentration by ELISA. Rats were randomly allocated into 6 groups (n=6), (i) control, (ii) ISO (1h), (iii) ISO (2h), (iv) ISO (4h), (v) ISO (6h), and (vi) ISO (24h), 200mg ISO in each case. Rats were decapitated and the blood and tissues collected for irisin analysis. Blood was centrifuged at 1792 g for 5 min. Tissues were washed with saline and fixed in 10% formalin for histology. Serum irisin levels gradually decreased from 1h to 24h in MI rats compared with controls, the minimum being at 2h, increasing again after 6h. Cardiac muscle cells, glomerular, peritubular renal cortical interstitial cells, hepatocytes and liver sinusoidal cells and perimysium, endomysium and nucleoi of skeletal muscle were irisin positive, but its synthesis decreased 1-4h after MI. At all time-points, irisin increased near myocardial connective tissue, with production in skeletal muscle, liver and kidney recovering after 6h, although slower than controls. Unique insight into the pathogenesis of MI is shown, and the gradually decrease of serum irisin might be a diagnostic marker for MI.
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Affiliation(s)
- Tuncay Kuloglu
- Firat University, School of Medicine, Department of Histology and Embryology, Elazig 23119, Turkey
| | - Suna Aydin
- Department of Cardiovascular Surgery, Elazig Research and Education Hospital, Elazig 23100, Turkey; Firat University, School of Medicine, Department of Anatomy, Elazig 23119, Turkey
| | - Mehmet Nesimi Eren
- Dicle University, School of Medicine, Department of Cardiovascular Surgery, Diyarbakir 21280, Turkey
| | - Musa Yilmaz
- Firat University, School of Medicine, Department of Medical Biochemistry (Firat Hormone Research Groups), Elazig 23119, Turkey
| | - Ibrahim Sahin
- Firat University, School of Medicine, Department of Medical Biochemistry (Firat Hormone Research Groups), Elazig 23119, Turkey; Erzincan University, School of Medicine, Department of Histology and Embryology, Erzincan 24030, Turkey
| | - Mehmet Kalayci
- Firat University, School of Medicine, Department of Medical Biochemistry (Firat Hormone Research Groups), Elazig 23119, Turkey
| | - Emine Sarman
- Firat University, School of Medicine, Department of Histology and Embryology, Elazig 23119, Turkey
| | - Nalan Kaya
- Firat University, School of Medicine, Department of Histology and Embryology, Elazig 23119, Turkey
| | - Osman Fatih Yilmaz
- Firat University, School of Medicine, Department of Histology and Embryology, Elazig 23119, Turkey
| | - Ahmet Turk
- Firat University, School of Medicine, Department of Histology and Embryology, Elazig 23119, Turkey
| | - Yalcin Aydin
- Ankara University, Faculty of Veterinary Medicine, Veterinary Medicine Student, Ankara 06110, Turkey
| | - Mehmet Hanifi Yalcin
- Firat University, Faculty of Veterinary Medicine, Department of Histology and Embryology, Elazig 23119, Turkey
| | - Nimet Uras
- Firat University, School of Medicine, Medical School Student, Elazig 23119, Turkey
| | - Ali Gurel
- Firat University, School of Medicine, Department of Internal Medicine, Elazig 23119, Turkey
| | - Selcuk Ilhan
- Firat University, School of Medicine, Department of Medical Pharmacy, Elazig 23119, Turkey
| | - Evrim Gul
- Department of Emergency, Elazig education and Research Hospital, Elazig 23100, Turkey
| | - Suleyman Aydin
- Firat University, School of Medicine, Department of Medical Biochemistry (Firat Hormone Research Groups), Elazig 23119, Turkey.
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Aydin S, Kuloglu T, Aydin S, Eren MN, Celik A, Yilmaz M, Kalayci M, Sahin İ, Gungor O, Gurel A, Ogeturk M, Dabak O. Cardiac, skeletal muscle and serum irisin responses to with or without water exercise in young and old male rats: cardiac muscle produces more irisin than skeletal muscle. Peptides 2014; 52:68-73. [PMID: 24345335 DOI: 10.1016/j.peptides.2013.11.024] [Citation(s) in RCA: 112] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2013] [Revised: 11/25/2013] [Accepted: 11/25/2013] [Indexed: 10/25/2022]
Abstract
Irisin converts white adipose tissue (WAT) into brown adipose tissue (BAT), as regulated by energy expenditure. The relationship between irisin concentrations after exercise in rats compared humans after exercise remains controversial. We therefore: (1) measured irisin expression in cardiac and skeletal muscle, liver, kidney, peripheral nerve sheath and skin tissues, as also serum irisin level in 10 week-old rats without exercise, and (2) measured tissue supernatant irisin levels in cardiac and skeletal muscle, and in response to exercise in young and old rats to establishing which tissues produced most irisin. Young (12 months) and old rats (24 months) with or without 10min exercise (water floating) and healthy 10 week-old Sprague-Dawley rats without exercise were used. Irisin was absent from sections of skeletal muscle of unexercised rats, the only part being stained being the perimysium. In contrast, cardiac muscle tissue, peripheral myelin sheath, liver, kidneys, and skin dermis and hypodermis were strongly immunoreactivity. No irisin was seen in skeletal muscle of unexercised young and old rats, but a slight amount was detected after exercise. Strong immunoreactivity occurred in cardiac muscle of young and old rats with or without exercise, notably in pericardial connective tissue. Serum irisin increased after exercise, being higher in younger than older rats. Irisin in tissue supernatants (cardiac and skeletal muscle) was high with or without exercise. High supernatant irisin could come from connective tissues around skeletal muscle, especially nerve sheaths located within it. Skeletal muscle is probably not a main irisin source.
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Affiliation(s)
- Suna Aydin
- Department of Cardiovascular Surgery, Elazig Research and Education Hospital, Elazig 23100, Turkey; Firat University, School of Medicine, Department of Anatomy, Elazig 23119, Turkey
| | - Tuncay Kuloglu
- Firat University, School of Medicine, Department of Histology and Embryology, Elazig 23119, Turkey
| | - Suleyman Aydin
- Firat University, School of Medicine, Department of Medical Biochemistry (Firat Hormone Research Groups), Elazig 23119, Turkey.
| | - Mehmet Nesimi Eren
- Dicle University, School of Medicine, Department of Cardiovascular Surgery, Diyarbakir 21280, Turkey
| | - Ahmet Celik
- Mersin University, School of Medicine, Department of Cardiology, Mersin 33070, Turkey
| | - Musa Yilmaz
- Firat University, School of Medicine, Department of Medical Biochemistry (Firat Hormone Research Groups), Elazig 23119, Turkey
| | - Mehmet Kalayci
- Firat University, School of Medicine, Department of Medical Biochemistry (Firat Hormone Research Groups), Elazig 23119, Turkey
| | - İbrahim Sahin
- Firat University, School of Medicine, Department of Medical Biochemistry (Firat Hormone Research Groups), Elazig 23119, Turkey; Erzincan University, School of Medicine, Department of Histology and Embryology, Erzincan 24030, Turkey
| | - Orhan Gungor
- Department of Cardiovascular Surgery, Elazig Research and Education Hospital, Elazig 23100, Turkey
| | - Ali Gurel
- Firat University, School of Medicine, Department of Internal Medicine, Elazig 23119, Turkey
| | - Murat Ogeturk
- Firat University, School of Medicine, Department of Anatomy, Elazig 23119, Turkey
| | - Ozlem Dabak
- Firat University, School of Medicine, Department of Histology and Embryology, Elazig 23119, Turkey
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Gulcubuk A, Erdogan O, Bozkurt E, Gurel A, Arikan M, Cat H. Compact Cellular (Solid) Carcinoma Containing Hurthle Cell Areas in the Thyroid Gland of a Dog. J Comp Pathol 2014. [DOI: 10.1016/j.jcpa.2013.11.121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Sonmez K, Sennazli G, Gurel A. Eosinophilic Gastroenteritis and Allergic Asthma in a Captive Capybara (Hydrochoerus hydrochaeris). J Comp Pathol 2014. [DOI: 10.1016/j.jcpa.2013.11.192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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23
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Ulu R, Dogukan A, Tuzcu M, Gurel A, MUQBİL I, MOHAMMAD RM, Sahin K. Modulation of Nrf2/HO-1 by Thymoquinone During Cisplatin-Induced Nephrotoxicity. ACTA ACUST UNITED AC 2013. [DOI: 10.5262/tndt.2013.1002.09] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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24
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Ozturk G, Ginis Z, Akyol S, Erden G, Gurel A, Akyol O. The anticancer mechanism of caffeic acid phenethyl ester (CAPE): review of melanomas, lung and prostate cancers. Eur Rev Med Pharmacol Sci 2012; 16:2064-2068. [PMID: 23280020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
BACKGROUND Caffeic acid phenethyl ester (CAPE), an active component of propolis extract, specifically inhibits NF-κB. It exhibits antioxidant, antiinflammatory, antiproliferative, cytostatic, and most importantly, antineoplastic properties. AIM The aim of the present mini-review is to summarize and evaluate the anticancer mechanism of CAPE with examples of several cancer types. RESULTS In view of the mechanisms and findings in our laboratory and those of others in literature, we suggest that CAPE possess anticancer and apoptosis inducing activities. CONCLUSIONS Further researches are needed regarding the anticancer basis of CAPE in all disciplines of medicine. Also, clinical potential toxicities of CAPE should be revealed if it is going to be used as an anticancer agent.
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Affiliation(s)
- G Ozturk
- Department of Clinical Biochemistry, Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
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Fedakar SO, Bayraktar M, Gurel A. Bioreactor systems for large scale micropropagation for fruit tree rootstocks. N Biotechnol 2012. [DOI: 10.1016/j.nbt.2012.08.527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Sontas BH, Ozyogurtcu H, Gurel A, Ekici H. Evaluation of clinical and pathological characteristics of 155 canines with mammary tumours: a retrospective study. ACTA ACUST UNITED AC 2009. [DOI: 10.4067/s0301-732x2009000100007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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27
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Gurel A, Altinyazar HC, Unalacak M, Armutcu F, Koca R. Purine catabolic enzymes and nitric oxide in patients with recurrent aphthous ulceration. Oral Dis 2007; 13:570-4. [DOI: 10.1111/j.1601-0825.2006.01338.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Yilmaz H, Turan N, Gurel A, Gulcubuk A, Sonmez K, Bozkurt HH, Morgan KL. An abattoir survey on bovine spongiform encephalopathy (BSE) in Turkey. Pol J Vet Sci 2007; 10:271-274. [PMID: 18198543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The aim of this study was to investigate Bovine Spongiform Encephalopathy (BSE) in Turkish cattle in the Marmara region which borders the European Union (EU). For this, cattle brought to abattoirs in Istanbul were analysed. The high risk group were selected and therefore 384 cattle above 2 years old were included in the study. They were primarily examined for the presence of any clinical signs of nervous system and also other clinical disorders. The whole brains were taken and analysed for the presence of vacuolar degeneration and prion protein by PLATELIA BSE test kit. Only 5 cattle were found to be nervous and showed aggressive behaviour. There were no cattle showing incoordination or other neurological disorders. Cysts were observed in 3 brains. Histopathologically, no vacuolar degeneration indicative of BSE was found in any cattle examined. However, in 8 brains, few vacuoles were observed in neurons in sections taken from the brain, cerebellum, medulla oblongata and medulla spinalis. Slight mononuclear cell infiltration in 9 brain, intensed mononuclear cell infiltration in 1 brain, haemorrhages in 5 brains and gliosis in 11 brains were also found. No infective prion was detected by ELISA in samples taken from 384 cattle brain.
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Affiliation(s)
- H Yilmaz
- University of Istanbul, Veterinary Faculty, Department of Virology, Avcilar, Istanbul, Turkey.
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29
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Gulcubuk A, Altunatmaz K, Sonmez K, Haktanir-Yatkin D, Uzun H, Gurel A, Aydin S. Effects of curcumin on tumour necrosis factor-alpha and interleukin-6 in the late phase of experimental acute pancreatitis. ACTA ACUST UNITED AC 2006; 53:49-54. [PMID: 16411910 DOI: 10.1111/j.1439-0442.2006.00786.x] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Summary Inflammatory cytokines have been demonstrated to play an important role in the induction and severity of acute pancreatitis (AP) in the recent studies. The aim of this study was to investigate the effects of curcumin on inflammatory cytokines, such as tumour necrosis factor (TNF)-alpha and interleukin (IL)-6 in the late phase of AP. The study was conducted on 40 male Wistar Albino rats. The animals were divided randomly into four equal groups. AP was induced by the infusion of 3% sodium taurocholate into the biliopancreatic duct (in groups I and II). Starting on day 20 prior to the induction of AP, rats in group I received daily dose of 100 mg/kg of curcumin, dissolved in 9% ethanol via an intragastric tube. The same procedure was repeated for 6 days following the onset of AP. Group III was infused only on saline solution. Group IV (curcumin control group) received 9% ethanol via an intragastric tube, during the experimental period (totally 26 days). All the animals were sacrificed on day 6 after the collection of blood samples and serum TNF-alpha and IL-6 levels were determined. Tissue samples were taken from pancreas, mesenteric lymph nodes, liver, lungs, spleen and the kidneys for histopathological evaluation. Serum TNF-alpha and IL-6 levels in the group, which received curcumin (group I), were determined to be significantly lower than those of the untreated group (group II) (P<0.05). No statistically significant difference was detected in terms of total histopathological scores in the treatment group versus untreated group. Curcumin has been shown to markedly reduce serum TNF-alpha and IL-6 levels in the late phase of AP, but failed in the prevention of tissue injury.
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Affiliation(s)
- A Gulcubuk
- Department of Pathology, Faculty of Veterinary Medicine, Istanbul University, 34320 Avcilar/Istanbul, Turkey.
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Gurel A, Armutcu F, Hosnuter M, Unalacak M, Kargi E, Altinyazar C. Caffeic acid phenethyl ester improves oxidative organ damage in rat model of thermal trauma. Physiol Res 2006. [DOI: 10.33549/physiolres.930519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023] Open
Abstract
Severe burn injuries cause functional impairment in distant internal organs. Although this mechanism is not clear, it is possible that free radical toxicity plays an important role. Research in animals and clinical studies have shown that there is a close relationship between a lipid peroxidative reaction and secondary pathological changes following thermal injury. It has been demonstrated that antioxidant treatment prevents oxidative tissue damage associated with thermal trauma. This study was designed to determine the possible protective effect of caffeic acid phenethyl ester (CAPE) treatment against oxidative damage in the kidney and lung induced by thermal injury. Rats were decapitated either 1, 3 or 7 days after burn injury. CAPE was administered intraperitoneally immediately after thermal injury. Kidney and lung tissues were taken for the determination of malondialdehyde (MDA) level, myeloperoxidase (MPO), catalase (CAT), superoxide dismutase (SOD) and xanthine oxidase (XO) activities. Severe skin thermal injury caused a significant decrease in SOD and CAT activities, as well as significant increases in MDA level, XO and MPO activities in tissues during the postburn period. Treatment of rats with CAPE (10 micromol/kg) significantly elevated the decreased SOD and CAT activities, while it decreased MDA levels and MPO as well as XO activity.
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Ege E, Ilhan A, Gurel A, Akyol O, Ozen S. Erdosteine ameliorates neurological outcome and oxidative stress due to ischemia/reperfusion injury in rabbit spinal cord. Eur J Vasc Endovasc Surg 2004; 28:379-86. [PMID: 15350559 DOI: 10.1016/j.ejvs.2004.06.004] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/03/2004] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Oxygen-derived free radicals have been suggested as important in degeneration after spinal cord ischemia. The aim of this study was to investigate whether erdosteine has a protective effect against spinal cord ischemia during aortic cross clamping. MATERIALS AND METHODS New Zealand White rabbits (n=21) were divided into three groups. In the ischemia/reperfusion group (I/R) (n=8), the infrarenal aorta of rabbits was cross clamped for 21 min and then reperfused. In erdosteine group, the administration of erdosteine solution (50 mg/kg) was started two days before aortic cross-clamping and rabbits (n=8) were subjected to ischemia and reperfusion. Animals in control group (n=5) underwent a surgical procedure similar to the other groups but the aorta was not clamped. The animals were sacrificed at 72 h and histopathological, and biochemical analyses were carried out on the lumbar spinal cords. RESULTS Erdosteine treatment was associated with improved neurological function in the postoperative period. Histopathological examination of spinal cord tissues in erdosteine group revealed changes consistent with mild ischemic injury, but rabbits in I/R group with paraplegia had total destruction of the motor neurons. Biochemical analyses of spinal cord tissues, in the I/R group, revealed a significant increase in the superoxide dismutase, xanthine oxidase, adenosine deaminase and myeloperoxidase activities, and a significant depletion in glutathione peroxidase activity when compared to that of control rabbits. Erdosteine treatment prevented the increase of all these enzymes except adenosine deaminase. Ischemia/reperfusion produced a significant increase in the tissue malondialdehyde levels. Ischemia/reperfusion-induced increments in malondialdehyde content of the spinal cord were significantly prevented by erdosteine treatment. CONCLUSIONS The present study demonstrated that erdosteine treatment before aortic cross clamping ameliorates neurological outcome, neuronal injury and oxidative stress in the rabbit spinal cord.
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Affiliation(s)
- E Ege
- Department of Cardiovascular Surgery, Turgut Ozal Medical Center, Inonu University, Malatya, Turkey
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Gurel A, Armutcu F, Cihan A, Numanoglu KV, Unalacak M. Erdosteine Improves Oxidative Damage in a Rat Model of Renal Ischemia-Reperfusion Injury. Eur Surg Res 2004; 36:206-9. [PMID: 15263825 DOI: 10.1159/000078854] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2003] [Accepted: 02/23/2004] [Indexed: 11/19/2022]
Abstract
The aim of the present study was to determine the effects of erdosteine, a new antioxidant and anti-inflammatory agent, on lipid peroxidation, neutrophil infiltration, and antioxidant enzyme activities in a rat model of renal ischemia-reperfusion (I/R) injury. Twenty-eight rats were divided into three groups: sham operation, I/R, and I/R plus erdosteine groups. After the experimental procedure, rats were sacrificed and kidneys were removed and prepared for malondialdehyde (MDA) levels, myeloperoxidase (MPO), xanthine oxidase (XO), catalase (CAT) and superoxide dismutase (SOD) activities. MDA level, MPO and XO activities were significantly increased in the I/R group. On the other hand, SOD and CAT activities were found to be decreased in the I/R group compared to the sham group. Pretreatment with erdosteine significantly diminished tissue MDA level, MPO and XO activities. Our data support a role for erdosteine in attenuation in renal damage after I/R injury of the kidney, in part at least by inhibition of neutrophil sequestration and XO activity.
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Affiliation(s)
- A Gurel
- Department of Biochemistry and Clinical Biochemistry, Karaelmas University Faculty of Medicine Zonguldak, Turkey.
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Kart L, Sarikaya S, Gurel A, Altin R, Armutcu F, Tor M, Ozdolap S. Rheumatoid factor seropositivity and rheumatoid symptoms in coal worker's pneumoconiosis. Clin Rheumatol 2004; 22:365-6. [PMID: 14577001 DOI: 10.1007/s10067-003-0727-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2002] [Accepted: 01/03/2003] [Indexed: 11/26/2022]
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Kocyigit A, Armutcu F, Gurel A, Ermis B. Alterations in plasma essential trace elements selenium, manganese, zinc, copper, and iron concentrations and the possible role of these elements on oxidative status in patients with childhood asthma. Biol Trace Elem Res 2004; 97:31-41. [PMID: 14742898 DOI: 10.1385/bter:97:1:31] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2003] [Accepted: 06/19/2003] [Indexed: 11/11/2022]
Abstract
The aim of the present study is to evaluate the status of plasma essential trace element selenium (Se), manganese (Mn), copper (Cu), zinc (Zn), and iron (Fe) concentrations and the effect of these elements on oxidative status in patients with childhood asthma. Plasma Se, Mn, Cu, and Zn concentrations were determined by atomic absorption spectrophotometry (AAS) and Fe concentrations, malondialdehyde (MDA), and total antioxidant capacity (TAC) were determined by the colorimetric method. The plasma MDA/TAC ratio was calculated as an index of oxidative status. Plasma albumin levels were measured to determine nutritional status. Plasma Fe concentrations, MDA levels and the MDA/TAC ratio were significantly higher (p<0.001, p<0.001, and p<0.01, respectively) and Se and Mn concentrations and TAC were lower (p<0.01, p<0.05, and p<0.01, respectively) in patients when compared to the healthy subjects. Plasma Zn, Cu, and albumin levels were not found to be significantly different in patients and controls (p>0.05). There were positive relationships between plasma MDA and Fe (r=0.545, p<0.001) and TAC and Se (r= 0.485, p<0.021), and a negative correlation between TAC and MDA values (r= -0.337, p<0.031) in patients with childhood asthma. However, there was no correlation between these trace elements and albumin content in patient groups. These observations suggest that increased Fe and decreased Se concentrations in patients with childhood asthma may be responsible for the oxidant/antioxidant imbalance.
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Affiliation(s)
- A Kocyigit
- Department of Biochemistry, Medical Faculty, Harran University, Sanliurfa, Turkey
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35
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Gurel A, Armutcu F, Hosnuter M, Unalacak M, Kargi E, Altinyazar C. Caffeic acid phenethyl ester improves oxidative organ damage in rat model of thermal trauma. Physiol Res 2004; 53:675-82. [PMID: 15588137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023] Open
Abstract
Severe burn injuries cause functional impairment in distant internal organs. Although this mechanism is not clear, it is possible that free radical toxicity plays an important role. Research in animals and clinical studies have shown that there is a close relationship between a lipid peroxidative reaction and secondary pathological changes following thermal injury. It has been demonstrated that antioxidant treatment prevents oxidative tissue damage associated with thermal trauma. This study was designed to determine the possible protective effect of caffeic acid phenethyl ester (CAPE) treatment against oxidative damage in the kidney and lung induced by thermal injury. Rats were decapitated either 1, 3 or 7 days after burn injury. CAPE was administered intraperitoneally immediately after thermal injury. Kidney and lung tissues were taken for the determination of malondialdehyde (MDA) level, myeloperoxidase (MPO), catalase (CAT), superoxide dismutase (SOD) and xanthine oxidase (XO) activities. Severe skin thermal injury caused a significant decrease in SOD and CAT activities, as well as significant increases in MDA level, XO and MPO activities in tissues during the postburn period. Treatment of rats with CAPE (10 micromol/kg) significantly elevated the decreased SOD and CAT activities, while it decreased MDA levels and MPO as well as XO activity.
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Affiliation(s)
- A Gurel
- Department of Biochemistry and Clinical Biochemistry, Zonguldak Karaelmas University Faculty of Medicine, Zonguldak, Turkey.
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Yildiz F, Gurel A, Yesildere T, Ozer K. Frontal chondrosarcoma in a cat. J Vet Sci 2003; 4:193-4. [PMID: 14610375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/27/2023] Open
Abstract
In this case, chondrosarcoma, detected on the frontal bone of a 12-year-old female cross-bred cat was examined clinically and histopathologically. After being processed routinely, specimens were stained with Hematoxylin & Eosin and Crossman Modification of Mallars Triple Stain. The neoplasm was composed of numerous fusiform mesenchymal cells intimately associated with the formation of lobular structure, separated by thin fibrous septae. In the center there were observed atypical chondrocytes, forming the matrix of the tumoral mass, surrounded by round-ovoid, fusiform mesenchymal cells having interference with the septal tissue at the periphery. Few mitotic figures were detected in these areas. The tumors pattern, localization, the species and the age of the animal were consistent with those of multilobular chondroma known as chondroma rodens. Although the mitotic figures and the wide atypia indicated that the entity was a neoplasm of malign type, it was more likely considered to be the malign transformation of chondroma rodens. The post-surgical outcome of the patient was observed, and recurrence on the same site was reported within 2 months.
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Affiliation(s)
- F Yildiz
- Department of Pathology, Faculty of Veterinary Medicine, Istanbul University, Turkey.
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Affiliation(s)
- F Yildiz
- Department of Pathology, Faculty of Veterinary Medicine, Istanbul University, Turkey
| | - A Gurel
- Department of Pathology, Faculty of Veterinary Medicine, Istanbul University, Turkey
| | - T Yesildere
- Department of Pathology, Faculty of Veterinary Medicine, Istanbul University, Turkey
| | - K Ozer
- Department of Pathology, Faculty of Veterinary Medicine, Istanbul University, Turkey
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38
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Affiliation(s)
- H Yilmaz
- Department of Microbiology, Veterinary Faculty, University of Istanbul, Avcilar, Turkey
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Oztürk H, Yağmur Y, Buyukbayram H, Dokucu AI, Gurel A. Effects of the nitric oxide donor molsidomine on the early stages of liver damage in rats with bile duct ligation: a biochemical and immunohistochemical approach. Eur Surg Res 2002; 34:285-90. [PMID: 12145554 DOI: 10.1159/000063069] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
This study aimed to evaluate the effects of the nitric oxide donor molsidomine on the early stages of liver damage and biochemical changes in rats with bile duct ligation (BDL). Forty prepubertal male Sprague-Dawley rats weighing 125-140 g were studied. Group 1 rats (sham-control, n = 10) were not subjected to any surgical manipulation. Group 2 rats (BDL/untreated, n = 10) were subjected to BDL but no drug was administered. Group 3 rats (BDL/L-NAME, n = 10) received a daily dose of N(G)-nitro-L-arginine methyl ester (L-NAME) intraperitoneally for 7 days after BDL. Group 4 rats (BDL/molsidomine, n = 10) received a daily dose of molsidomine by gastric tube for 7 days after BDL. After 1 week, biochemical and histological evaluations were performed and the liver hydroxyproline content was measured. Serum bilirubin and liver enzymes were significantly increased in the BDL/untreated, BDL/L-NAME and BDL/molsidomine groups in comparison with the sham-control group 1 week after BDL. However, the liver enzymes were significantly decreased in the BDL/molsidomine group in comparison with the BDL/untreated and BDL/L-NAME groups. In the BDL/L-NAME group, proliferation of portal and periportal biliary ductules with disorganization of the hepatocyte plates, dilated portal spaces and areas of polymorphonuclear leukocyte infiltration, fibrosis and hepatocyte necrosis were observed. In the BDL/molsidomine group, polymorphonuclear leukocyte infiltration, hepatocyte necrosis and fibrosis were rarely seen. The hydroxyproline content in the liver was increased 1 week after obstruction in the BDL/untreated and BDL/L-NAME groups when compared to BDL/molsidomine group. Collagen type-IV expression was not observed in the BDL/molsidomine group in contrast to the BDL/untreated and BDL/L-NAME groups. In conclusion, during 1 week of treatment, the nitric oxide donor molsidomine improved hepatic fibrosis in the hepatic parenchyma and did not affect serum bilirubin values, but positively affected the serum aspartate aminotransferase and alanine aminotransferase values.
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Affiliation(s)
- H Oztürk
- Department of Pediatric Surgery, Dicle University Medical School, Diyarbakir, Turkey.
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Abstract
BACKGROUND AND OBJECTIVE The intravenous anaesthetic propofol may become contaminated once the ampoules have been opened. The effect of lidocaine and cooling was tested on the bacterial contamination of propofol. METHODS The study was performed in two parts. In Part 1,1920 aliquots of propofol alone, and of a propofollidocaine mixture, were drawn into sterile syringes and stored at room temperature (24-26 degrees C) or in the refrigerator (12-14 degrees C). In Part 2, 1200 aliquots from opened ampoules of propofol alone, or as a propofol-lidocaine mixture, were stored at room temperature or in the refrigerator. Samples were aerobically cultured at 0, 1, 2, 4, 8 and 12 h. RESULTS In Part 1, diphtheroid bacillus was isolated from one aliquot (0.06%). In Part 2, there was bacterial growth in both groups; the number of contaminated ampoules increased with time and it was 20-26% at 12 h. Diphtheroid bacilli and coagulase-negative staphylococci were the most frequent micro-organisms. CONCLUSIONS When propofol is stored in opened ampoules, the bacterial contamination rate is high. Adding lidocaine, or storing opened ampoules at 12-14 degrees C, does not affect the contamination rate, except during the first few hours. It is advisable to draw propofol aseptically into a syringe in an amount that can be used during one procedure.
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Affiliation(s)
- N Aydin
- Adnan Menderes University, Department of Anaesthesiology and Reanimation, Aydin, Turkey.
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Kurt I, Kurt NM, Erel VK, Gursoy F, Gurel A. A simple and inexpensive nasal cannula to prevent rebreathing for spontaneously breathing patients under surgical drapes. Anesth Analg 2001; 93:667-8. [PMID: 11524338 DOI: 10.1097/00000539-200109000-00027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
IMPLICATIONS A new nasal cannula that provides oxygenation and suctioning simultaneously prevents rebreathing during surgery in spontaneously breathing patients under surgical drapes. When air is not suctioned, inspired CO(2) levels increase significantly, whereas suctioning prevents this increase. Expiratory CO(2), respiratory rate, heart rate, and arterial blood pressure remain stable regardless of suctioning.
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Affiliation(s)
- I Kurt
- Department of Anesthesiology & Reanimation, Adnan Menderes University, Faculty of Medicine, Aydin, Turkey.
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