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Celebi O, Celebi D, Baser S, Aydın E, Rakıcı E, Uğraş S, Ağyar Yoldaş P, Baygutalp NK, Abd El-Aty AM. Antibacterial Activity of Boron Compounds Against Biofilm-Forming Pathogens. Biol Trace Elem Res 2024; 202:346-359. [PMID: 37464169 DOI: 10.1007/s12011-023-03768-z] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Accepted: 07/05/2023] [Indexed: 07/20/2023]
Abstract
This study aimed to evaluate the antibacterial activity of nine boron derivatives against biofilm-forming pathogenic bacteria. The effect of boron derivatives (CMB, calcium metaborate; SMTB, sodium metaborate tetrahydrate; ZB, zinc borate; STFB, sodium tetra fluorine borate; STB, sodium tetraborate; PTFB, potassium tetra fluor borate; APTB, ammonium pentabo-rate tetrahydrate; SPM, sodium perborate monohydrate; Borax, ATFB, ammonium tetra fluorine borate) on bacteria isolated from blood culture was determined by the minimum inhibitory concentration (MIC) method. Then, biofilm formation potentials on microplates, tubes, and Congo red agar were examined. The cytotoxicity of boron derivatives was determined by using WST-1-based methods. The interaction between the biofilm-forming bacteria, fibroblast cells, and boron derivatives was determined with the infection model. We found that the sodium metaborate tetrahydrate molecule was effective against all pathogens. According to the optical density values detected at 630 nm in microplates, meticillin-resistant Staphylococcus aureus was observed to have the most substantial biofilm ability at 0.257 nm. As a result of cytotoxicity studies, it has been determined that a 1 µg/L concentration of boron derivatives is not toxic to fibroblast L929 cells. In cell culture experiments, these boron derivatives have very serious inhibitory activity against biofilm-forming pathogens in a short treatment period, such as 2-4 h. Furthermore, using these molecules on inanimate surfaces affected by biofilms would be appropriate instead of living cells.
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Affiliation(s)
- Ozgur Celebi
- Department of Medical Microbiology, Faculty of Medicine, Ataturk University, 25240, Erzurum, Turkey
| | - Demet Celebi
- Department of Microbiology, Faculty of Veterinary Medicine, Ataturk University, 25240, Erzurum, Turkey
- Ataturk University Vaccine Application and Development Center, Ataturk University, 25240, Erzurum, Turkey
| | - Sumeyye Baser
- Department of Medical Microbiology, Faculty of Medicine, Ataturk University, 25240, Erzurum, Turkey
| | - Elif Aydın
- Vocational School of Health Services, Kütahya Health Sciences University, Kütahya, Turkey.
| | - Erva Rakıcı
- Department of Medical Microbiology, Faculty of Medicine, Recep Tayyip Erdogan University, 53020, Rize, Turkey
| | - Serpil Uğraş
- Department of Field Crops, Faculty of Agriculture and Natural Science, Duzce University, 81620, Düzce, Turkey
| | - Pınar Ağyar Yoldaş
- Traditional and Complementary Medicine Applied and Research Center, Duzce University, Duzce, Turkey
| | - Nurcan Kılıç Baygutalp
- Department of Biochemistry, Faculty of Pharmacy, Ataturk University, 25240, Erzurum, Turkey
| | - A M Abd El-Aty
- Department of Medical Pharmacology, Faculty of Medicine, Ataturk University, 25240, Erzurum, Turkey
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Aksakal A, Kiliç AF, Afşin DE, Baygutalp NK, Kerget B. Evaluation of the relationship between TAFI level and prognosis in COVID-19 patients. Eur Rev Med Pharmacol Sci 2023; 27:4764-4771. [PMID: 37259759 DOI: 10.26355/eurrev_202305_32487] [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: 06/02/2023]
Abstract
OBJECTIVE Serum thrombin-activated fibrinolysis inhibitor (TAFI) levels were measured in coronavirus disease 2019 (COVID-19) patients requiring intensive care, clinical hospitalization, and outpatient follow-up. The relationships between serum TAFI levels and prognosis were determined. PATIENTS AND METHODS Ninety patients who had positive COVID-19 PCR test results were randomly selected and included in the study. Subgroups were formed according to the clinical characteristics of the patients as follows: mild, moderate, and severe. Venous blood samples were taken from all patients, and serum C-reactive protein (CRP), lactate dehydrogenase (LDH), fibrinogen, D-dimer, ferritin, and TAFI levels were measured. The results were evaluated by comparing each group. RESULTS The one-way ANOVA test to determine differences between subgroups resulted in p-values lower than 0.05 for all biochemical analytes (CRP, LDH, fibrinogen, D-dimer, ferritin, and TAFI). Regarding serum TAFI levels, there were significant differences in the severe group (853.04 ± 338.58 ng/mL) compared to the mild group (548.33 ± 264.17 ng/mL). ROC curve analysis to predict mortality revealed that TAFI levels were able to detect 85% of deaths. In addition, ROC analysis revealed that serum TAFI levels could detect 86% of intubated cases. CONCLUSIONS The disease progression is more severe in patients with high TAFI levels, and high TAFI levels are associated with mortality and intubation rates. Further studies are needed to determine serum TAFI levels as a biomarker of prognosis in COVID-19 patients.
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Affiliation(s)
- A Aksakal
- Department of Pulmonary Diseases, Ataturk University School of Medicine, Yakutiye, Erzurum, Turkey.
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Afşin DE, Aksakal A, Kılıç AF, Baygutalp NK, Kerget B. The relationship between COVID-19 and the complement system: mannose-binding lectin. Eur Rev Med Pharmacol Sci 2023; 27:2099-2103. [PMID: 36930509 DOI: 10.26355/eurrev_202303_31581] [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: 03/18/2023]
Abstract
OBJECTIVE Mannose-binding lectin (MBL) is one of the important parts of the complement system. In our study, we aimed to determine serum MBL levels and their relationship with intensive care hospitalization. PATIENTS AND METHODS Ninety COVID-19-positive patients from outpatient clinics and clinics were included in this study. The patients were evaluated in three groups as mild, moderate, and severe groups. Each group consisted of 30 patients. A venous blood sample was taken once from each patient. Serum MBL, C-reactive protein (CRP), lactate dehydrogenase (LDH), fibrinogen, D-dimer, and ferritin levels were measured. RESULTS The mean serum MBL levels of all patients were 695.46±324.42 ng/mL. One-way ANOVA test resulted in significant differences in serum CRP, LDH, fibrinogen, D-dimer, ferritin, and MBL levels between groups (p<0.05 for all comparisons). Post-hoc Tukey analysis showed significant differences in serum MBL levels between mild and severe groups and moderate and severe groups. CONCLUSIONS MBL may be used as a prognostic biomarker in COVID-19 patients. Further studies are needed to determine MBL in treatment strategies.
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Affiliation(s)
- D E Afşin
- Department of Pulmonary Diseases, Health Sciences University, Erzurum Regional Education and Research Hospital, Erzurum, Turkey
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Aksakal A, Kılıç AF, Tanülkü U, Tavacı T, Kılıç Baygutalp N. Interleukin-28 as a Promising Marker for Predicting Invasive Mechanical Ventilation Requirement and Mortality in COVID-19 Patients. Thorac Res Pract 2023; 24:61-65. [PMID: 37503641 PMCID: PMC10652071 DOI: 10.5152/thoracrespract.2023.22146] [Citation(s) in RCA: 1] [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] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 10/05/2022] [Indexed: 07/29/2023]
Abstract
OBJECTIVE The study aimed to evaluate serum interleukin-28 levels in COVID-19 patients and correlate the results with disease severity. MATERIAL AND METHODS This study included 90 patients who presented to the COVID-19 outpatient clinics, hospital wards, and intensive care units. Serum interleukin-28, C-reactive protein, lactate dehydrogenase, fibrinogen, d-dimer, and ferritin levels were measured. Patients were divided into 3 groups based on clinical severity to mild, moderate, and severe groups (each group consisted of 30 patients). RESULTS There were significant differences in serum C-reactive protein, lactate dehydrogenase, fibrinogen, d-dimer, ferritin, and interleukin- 28 levels between all groups. The mean serum interleukin-28 levels of all patients were 383.74 ± 63.58 ng/L. The mean serum interleukin-28 levels were 335.52 ± 42.12 ng/L in the mild group, 366.88 ± 41.27 ng/L in the moderate group, and 453.46 ± 36.78 ng/L in the severe group. CONCLUSION There were significant differences in comparisons of all pairs (P < .05). Interleukin-28 may be a promising biomarker for detecting disease severity in COVID-19 patients.
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Affiliation(s)
- Alperen Aksakal
- Department of Pulmonary Diseases, City Hospital, Erzurum, Turkey
| | | | - Uğurcan Tanülkü
- Department of Pulmonary Diseases, City Hospital, Erzurum, Turkey
| | - Taha Tavacı
- Department of Medical Pharmacology, tatürk University Faculty of Medicine, Erzurum, Turkey
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Celik Z, Baygutalp NK, Kilic AF, Tekin SB, Bakan E, Gul MA, Yuce N. Serum irisin levels in colorectal cancer patients. Eur Rev Med Pharmacol Sci 2023; 27:1474-1479. [PMID: 36876687 DOI: 10.26355/eurrev_202302_31387] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
Abstract
OBJECTIVE There are limited studies investigating the role of irisin in colorectal cancer, and the results are diverse. The role of irisin in colorectal cancer patients was investigated in this study. PATIENTS AND METHODS This cross-sectional study included 53 patients diagnosed with colorectal cancer (CRC) and 87 healthy volunteers. Serum irisin, glucose, insulin, C-peptide, and whole blood hemoglobin A1c (HbA1c) levels were measured in venous blood samples taken from patients and the control group. RESULTS The mean serum irisin levels were significantly lower in the patient group (23.97 ± 16.94 ng/mL) than in the control group (32.71 ± 17.26 ng/mL) (p = 0.004). Serum glucose levels were 96.58 ± 15.12 mg/dL in the patient group and 81.91 ± 11.24 mg/dL in the control group. Serum glucose levels were significantly higher in the patient group than in the control group (p < 0.01). In the patient group, there was no statistically significant difference between metastasis (+) patients and metastasis (-) patients in terms of serum irisin levels (27.53 ± 18.48 ng/mL and 21.23 ± 15.43 ng/mL, respectively; p = 0.182). CONCLUSIONS Our study has provided new insights into the potential role of irisin in CRC. However, further studies, including in vitro, in vivo, and larger patient groups, are necessary to fully understand the potential of irisin as a biomarker or therapeutic target for CRC and other diseases.
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Affiliation(s)
- Z Celik
- Department of Biomaterials and Tissue Engineering, Institute of Science, Harran University, Şanlıurfa, Turkey.
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Ozan M, Buzdagli Y, Eyipinar CD, Baygutalp NK, Yüce N, Oget F, Kan E, Baygutalp F. Does Single or Combined Caffeine and Taurine Supplementation Improve Athletic and Cognitive Performance without Affecting Fatigue Level in Elite Boxers? A Double-Blind, Placebo-Controlled Study. Nutrients 2022; 14:nu14204399. [PMID: 36297081 PMCID: PMC9610400 DOI: 10.3390/nu14204399] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 10/11/2022] [Accepted: 10/14/2022] [Indexed: 11/16/2022] Open
Abstract
In previous studies, the effect of single or combined intake of caffeine (CAF) and taurine (TAU) on exercise performance was investigated. However, the potential synergistic effect on physical and cognitive performance after fatigue induced by anaerobic exercise is unknown. The effects of single and combination CAF and TAU supplementation on the Wingate test in elite male boxers and to evaluate balance, agility and cognitive performance after fatigue are being investigated for the first time in this study. Twenty elite male boxers 22.14 ± 1.42 years old were divided into four groups in this double-blind, randomized crossover study: CAF (6 mg/kg of caffeine), TAU (3 g single dose of taurine), CAF*TAU (co-ingestion of 3 g single dose of taurine and 6 mg/kg of caffeine) and PLA (300 mg maltodextrin). The findings are as follows: co-ingestion of CAF*TAU, improved peak (W/kg), average (W), minimum (W) power, time to reach (s), and RPE performances compared to the PLA group significantly (p < 0.05). Similarly, it was determined that a single dose of TAU, created a significant difference (p < 0.05) in peak power (W/kg), and average and minimum power (W) values compared to the CAF group. According to the balance and agility tests performed after the Wingate test, co-ingestion of CAF*TAU revealed a significant difference (p < 0.05) compared to the PLA group. In terms of cognitive performance, co-ingestion of CAF*TAU significantly improved the neutral reaction time (ms) compared to the TAU, CAF and PLA groups. As a result, elite male boxers performed better in terms of agility, balance and cognitive function when they consumed a combination of 6 mg/kg CAF and 3 g TAU. It has been determined that the combined use of these supplements is more effective than their single use.
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Affiliation(s)
- Murat Ozan
- Department of Physical Education and Sports, Kazım Karabekir Faculty of Education, Atatürk University, 25500 Erzurum, Turkey
| | - Yusuf Buzdagli
- Department of Coaching Education, Faculty of Sport Sciences, Erzurum Technical University, 25500 Erzurum, Turkey
- Correspondence:
| | - Cemre Didem Eyipinar
- Department of Physical Education and Sport, Faculty of Sport Sciences, Gaziantep University, 27310 Gaziantep, Turkey
| | - Nurcan Kılıç Baygutalp
- Department of Biochemistry, Faculty of Pharmacy, Ataturk University, 25500 Erzurum, Turkey
| | - Neslihan Yüce
- Department of Medical Biochemistry, Faculty of Medicine, Ataturk University, 25500 Erzurum, Turkey
| | - Furkan Oget
- Department of Physical Education and Sports, Faculty of Sport Sciences, Erzurum Technical University, 25500 Erzurum, Turkey
| | - Emirhan Kan
- Department of Physical Education and Sports, Kazım Karabekir Faculty of Education, Atatürk University, 25500 Erzurum, Turkey
| | - Fatih Baygutalp
- Department of Medical Biochemistry, Faculty of Medicine, Ataturk University, 25500 Erzurum, Turkey
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Ozan M, Buzdağli Y, Baygutalp NK, Yüce N, Baygutalp F, Bakan E. Serum BDNF and Selenium Levels in Elite Athletes Exposed to Blows. Medicina (B Aires) 2022; 58:medicina58050608. [PMID: 35630025 PMCID: PMC9145651 DOI: 10.3390/medicina58050608] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 04/18/2022] [Accepted: 04/23/2022] [Indexed: 11/21/2022] Open
Abstract
Background and Objectives: The study aimed to investigate the combined acute and long-term effects of exposure to blows and exercise on serum BDNF (brain-derived neurotrophic factor) and selenium levels. Materials and Methods: Serum BDNF and selenium levels were determined in 40 male elite athletes before and after vigorous exercise (training match) with a probability of exposure to blows and in 10 sedentary men subjected to exercise (Astrand running protocol). Results: Serum BDNF levels were found 11.50 ± 3.50 ng/mL before exercise and 14.02 ± 3.15 ng/mL after exercise in the athlete group (p = 0.02), and 12.18 ± 4.55 ng/ mL and 11.74 ± 2.48 ng/ mL before and after exercise in the sedentary group, respectively (p = 0.873). Serum BDNF (pre-exercise, baseline) levels were slightly lower in the athlete group than those in the sedentary group (11.50 ± 3.50 and 12.18 ± 4.55 ng/mL, respectively, p = 0.796). Pre-exercise serum selenium levels in athletes were significantly higher compared to those of sedentary participants (130.53 ± 36.79 and 95.51 ± 20.57 µg/L, respectively, p = 0.011). There was no difference in selenium levels after exercise (124.01 ± 29.96 µg/L) compared to pre-exercise (130.53 ± 36.79 µg/L) in the athlete group (p = 0.386). Similarly, there was no difference in selenium levels after exercise (113.28 ± 25.51 µg/L) compared to pre-exercise (95.51 ± 20.57 µg/L) in the sedentary group (p = 0.251). Conclusions: BDNF results show that even if athletes are exposed to blows, they may be protected from the long-term effects of blows thanks to the protective effect of their non-sedentary lifestyle. Regular exercise may have a protective effect on maintaining serum selenium levels in athletes even exposed to blows chronically.
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Affiliation(s)
- Murat Ozan
- Department of Physical Education and Sports, Kazım Karabekir Education Faculty, Ataturk University, Erzurum 25240, Turkey;
| | - Yusuf Buzdağli
- Department of Physical Education and Sports, Faculty of Sport Sciences, Erzurum Technical University, Erzurum 25240, Turkey;
| | - Nurcan Kılıç Baygutalp
- Department of Biochemistry, Faculty of Pharmacy, Ataturk University, Erzurum 25240, Turkey
- Correspondence: ; Tel.: +90-442-2315231
| | - Neslihan Yüce
- Department of Medical Biochemistry, Faculty of Medicine, Ataturk University, Erzurum 25240, Turkey;
| | - Fatih Baygutalp
- Department of Physical Medicine and Rehabilitation, Faculty of Medicine, Ataturk University, Erzurum 25240, Turkey;
| | - Ebubekir Bakan
- Department of Biochemistry, Faculty of Medicine, Ağrı İbrahim Çeçen University, Ağrı 04100, Turkey;
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Ozturk N, Gozukara I, Kamalak Z, Gul MA, Bayraktutan Z, Baygutalp NK, Kiziltunc A, Bakan E. The importance of some angiogenic markers in spontaneous abortion. CLIN EXP OBSTET GYN 2017; 44:444-447. [PMID: 29949290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
AIM In this study, the authors aimed to determine the serum levels of vascular endothelial growth factor (VEGF), angiopoietin-l (ang-1) and angiopoietin-2 (ang-2) factors as indicators of placental angiogenesis and vasculogenesis in abortion cases. Materials and Meth- ods: This study was conducted in 40 women who were pregnant for 7-20 weeks and diagnosed with an incipient abortion and 40 pregnant healthy women with similar ages, gestational weeks, and body mass index (BMI) values. Serum VEGF, ang-1, and ang-2 levels were measured with ELISA methods. RESULTS The authors found that the serum VEGF levels were higher and ang-1 levels were significantly lower in pregnant women whose pregnancies failed with abortion, compared to control group. There was no significani difference in terms of ang-2 levels between groups. CONCLUSION A strong relationship was found between VEGF and ang-I early pregnancy loss, and significant changes of these factors may also be associated with the physiopathology of abortion incipience. Evaluating these factors may be benefical for prediction and designing of treatment modalities on spontaneous abortion.
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Kaynar Ö, Öztürk N, Kıyıcı F, Baygutalp NK, Bakan E. The Effects of Short-Term Intensive Exercise on Levels of Liver Enzymes and Serum Lipids in Kick Boxing Athletes. Dicle Med J 2016. [DOI: 10.5798/diclemedj.0921.2016.01.0652] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Öztürk N, Kurt N, Özgeriş FB, Baygutalp NK, Tosun MS, Bakan N, Bakan E. Serum Zinc, Copper, Magnesium and Selenium Levels in Children with Helicobacter Pylori Infection. Eurasian J Med 2015; 47:126-9. [PMID: 26180497 DOI: 10.5152/eurasianjmed.2015.104] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 10/30/2014] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVE Helicobacter pylori infection can cause disease from mild to severe that may be accompanied by micronutrient deficiencies. We aimed to investigate serum zinc, copper, magnesium and selenium levels in Helicobacter pylori positive children. MATERIALS AND METHODS Thirty-four children, with chronic abdominal pain and diag-nosed to be Helicobacter pylori-positive and 20 healthy children with the same demo-graphic characteristics were included in the study. Serum zinc, copper and magnesium levels were measured in the flame unit of atomic absorption spectrophotometer, selenium levels were measured in the graphite unit of the same atomic absorption spectrophotometer. RESULTS Serum zinc levels were significantly higher and serum magnesium levels were significantly lower (p<0.05) in Helicobacter pylori positive children than those of the control group. Although copper levels were lower in patient group than in control group, this difference was not statistically significant (p>0.05). There was no significant difference between serum selenium levels of two groups. CONCLUSION We concluded that in Helicobacter pylori-positive children, many trace elements and mineral metabolism may change.
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Affiliation(s)
- Nurinnisa Öztürk
- Department of Biochemistry, Ataturk University Faculty of Medicine, Erzurum Turkey
| | - Nezahat Kurt
- Department of Biochemistry, Ataturk University Faculty of Medicine, Erzurum Turkey
| | - Fatma Betül Özgeriş
- Department of Biochemistry, Ataturk University Faculty of Medicine, Erzurum Turkey
| | | | - Mahya Sultan Tosun
- Polyclinic of Paediatric Gastroenterology, Hepatology and Nutrition, Denizli State Hospital, Denizli, Turkey
| | - Nuri Bakan
- Department of Biochemistry, Ataturk University Faculty of Medicine, Erzurum Turkey
| | - Ebubekir Bakan
- Department of Biochemistry, Ataturk University Faculty of Medicine, Erzurum Turkey
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Demirci E, Ferah I, Gundogdu C, Ozkanlar S, Baygutalp NK, Bayir Y, Calik M, Ayaz G. Endothelin receptor inhibition with bosentan delays onset of liver injury in streptozotocin-induced diabetic condition. Drug Res (Stuttg) 2014; 65:272-80. [PMID: 24918345 DOI: 10.1055/s-0034-1377024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
BACKGROUND This study was designed to investigate the protective effects of bosentan an orally active non-peptide mixed ETA/ETB receptor antagonist, on liver injury in streptozotocin-induced diabetic rats. METHODS 24 Albino-Wistar rats were randomly divided into 4 groups: healthy (Group 1), diabetic (Group 2) (60 mg/kg of streptozotocin i.p.), diabetic treated with bosentan 50 mg/kg (Group 3) and diabetic treated with bosentan 100 mg/kg (Group 4). The treatment of bosentan was initiated after streptozocin injection and continued for 60 days. RESULTS Liver from diabetic rats showed significant increase in malondialdehyde (MDA) level and significant decrease in glutathione (GSH), and superoxide dismutase (SOD) activity. Endothelin (ET-1), tumor necrosis factor (TNF-α) and transforming growth factor beta (TGF-β) gene expression significantly increased in the diabetic groups in the rat liver tissue. Bosentan treatment showed a significant up-regulatory effect on ET-1, TNF-α and TGF-β mRNA expression. Results from histopathological evaluation of the liver were in accordance with our biochemical and molecular results. CONCLUSIONS These data provide clear evidence that bosentan treatment is associated with promising hepatoprotective effect against diabetes-induced liver damage via reduction of cell inflammation and oxidative damage. These data suggest that ET receptors may be an important actor in diabetes-related liver damage, and blockage of these receptors may become a target for preventing diabetic complications in the future.
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Affiliation(s)
- E Demirci
- Department of Pathology, Ataturk University, Faculty of Medicine, Erzurum, Turkey
| | - I Ferah
- Department of Pharmacology, Ataturk University, Faculty of Pharmacy, Erzurum, Turkey
| | - C Gundogdu
- Department of Pathology, Ataturk University, Faculty of Medicine, Erzurum, Turkey
| | - S Ozkanlar
- Department of Biochemistry, Ataturk University, Faculty of Veterinary Medicine, Erzurum, Turkey
| | - N K Baygutalp
- Department of Pharmacy Management, Ataturk University, Faculty of Pharmacy, Erzurum, Turkey
| | - Y Bayir
- Department of Biochemistry, Ataturk University, Faculty of Pharmacy, Erzurum, Turkey
| | - M Calik
- Department of Pathology, Ataturk University, Faculty of Medicine, Erzurum, Turkey
| | - G Ayaz
- Department of Pharmacology, Ataturk University, Faculty of Medicine, Erzurum, Turkey
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