1
|
Un H, Ugan RA, Kose D, Yayla M, Tastan TB, Bayir Y, Halici Z. A new approach to sepsis treatment by rasagiline: a molecular, biochemical and histopathological study. Mol Biol Rep 2022; 49:3875-3883. [PMID: 35301652 DOI: 10.1007/s11033-022-07235-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 01/05/2022] [Accepted: 02/07/2022] [Indexed: 11/25/2022]
Abstract
AIM We aimed to investigate the effects of rasagiline on acute lung injury that develops in the sepsis model induced with the cecal ligation and puncture in rats. MAIN METHODS The rats were separated into the following six groups, Group 1: Sham, Group 2: Sham + Rasagiline 4 mg/kg, Group 3: Sepsis, Group 4: Sepsis + Rasagiline 1 mg/kg, Group 5: Sepsis + Rasagiline 2 mg/kg, Group 6: Sepsis + Rasagiline 4 mg/kg. A total of four holes were opened with a 16-gauge needle through the cecum distal to the point of ligation. KEY FINDINGS Rasagiline treatment increased glutathione level and superoxide dismutase activity while decreased the malondialdehyde level after the sepsis. There was a statistically significant improvement in the doses of 2 mg/kg and 4 mg/kg. Rasagiline also increased Tnf-α, IL1β, IL6, NF-κβand HMGB1 gene expressions in dose-dependent at 2 mg/kg and 4 mg/kg doses. In increased doses, rasagiline prevent the development of edema, the formation of inflammation, and hemorrhage. SIGNIFICANCE Rasagiline exerts both antioxidant and anti-inflammatory effects on the cecal ligation and puncture induced acute lung injury in rats.
Collapse
Affiliation(s)
- Harun Un
- Faculty of Pharmacy, Department of Biochemistry, Agri Ibrahim Cecen University, Agri, Turkey.
| | - Rustem Anil Ugan
- Faculty of Pharmacy, Department of Pharmacology, Ataturk University, Erzurum, Turkey
| | - Duygu Kose
- Faculty of Medicine, Department of Pharmacology, Ataturk University, Erzurum, Turkey.,Clinical Research, Development and Design Application and Research Center, Ataturk University, Erzurum, Turkey
| | - Muhammed Yayla
- Faculty of Medicine, Department of Pharmacology, Kafkas University, Kars, Turkey
| | - Tugba Bal Tastan
- Faculty of Medicine, Department of Histology and Embryology, Erzincan Binali Yıldırım University, Erzincan, Turkey
| | - Yasin Bayir
- Faculty of Pharmacy, Department of Biochemistry, Ataturk University, Erzurum, Turkey
| | - Zekai Halici
- Faculty of Medicine, Department of Pharmacology, Ataturk University, Erzurum, Turkey.,Clinical Research, Development and Design Application and Research Center, Ataturk University, Erzurum, Turkey
| |
Collapse
|
2
|
Kayhan Kustepe E, Altunkaynak BZ, Alkan I, Kivrak EG, Yildiran A, Geuna S. Potential Effects of Stem Cells Derived from the Peripheral Nerve and Adipose Tissue after the Nerve Crush Injury in Control and Obese Rats. J INVEST SURG 2022; 35:1021-1033. [DOI: 10.1080/08941939.2021.1991530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Elif Kayhan Kustepe
- Department of Histology-Embryology, Faculty of Medicine, İnönü University, Malatya, Turkey
| | | | - Işınsu Alkan
- Department of Histology-Embryology, Faculty of Medicine, Okan University, İstanbul, Turkey
| | - Elfide Gizem Kivrak
- Department of Histology-Embryology, Faculty of Medicine, Adıyaman University, Adıyaman, Turkey
| | - Alişan Yildiran
- Department of Pediatrics, Faculty of Medicine, Ondokuz Mayıs University, Samsun, Turkey
| | - Stefano Geuna
- Department of Human Anatomy, University of Turin, Turin, Italy
| |
Collapse
|
3
|
Ugan RA, Cadirci E, Halici Z, Toktay E, Cinar I. The role of urotensin-II and its receptors in sepsis-induced lung injury under diabetic conditions. Eur J Pharmacol 2018; 818:457-469. [DOI: 10.1016/j.ejphar.2017.11.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 11/06/2017] [Accepted: 11/09/2017] [Indexed: 02/07/2023]
|
4
|
Wang Z, Ren J, Wang G, Liu Q, Guo K, Li J. Association Between Diabetes Mellitus and Outcomes of Patients with Sepsis: A Meta-Analysis. Med Sci Monit 2017; 23:3546-3555. [PMID: 28727676 PMCID: PMC5533197 DOI: 10.12659/msm.903144] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Background Diabetes mellitus (DM) is a critical medical problem that can make people more likely to develop infectious complications, even sepsis. However, the influence of DM on the outcomes of septic patients is still controversial. Thus, we conducted the present meta-analysis to investigate whether DM worsens outcomes of septic patients. Material/Methods We searched studies from PubMed, Embase, and Cochrane Library databases from 1966 to July 1, 2016. The primary outcome we chose was 28-day or 30-day mortality or in-hospital mortality. Results Our meta-analysis of 10 enrolled studies performed between 2000 and 2016 shows that the mortality rate of septic patients with DM was slightly lower than that of non-diabetic patients (risk ratio [RR]=0.97, 95% confidence interval [CI]: 0.96 to 0.98, P<0.00001). On the other hand, septic patients with DM had a shorter hospital stay (weighted mean difference (WMD)=−2.27, 95% CI: −4.11 to −0.44, P=0.01), a higher incidence rate of AKI (RR=1.56, 95% CI: 1.25 to 1.95, P<0.001), and a similar incidence of respiratory dysfunction (RR=0.86, 95% CI: 0.71 to 1.04, P=0.11) compared with those without DM. Conclusions The results from the meta-analysis suggest that DM does not impair the outcome of patients with sepsis, and the incidence of acute kidney injury increases dramatically in septic patients with DM. Due to the limitations of the analysis, more well-designed trials are still necessary.
Collapse
Affiliation(s)
- Zhiwei Wang
- Department of Surgery, Jinling Hospital, Nanjing Medical University, Nanjing, Jiangsu, China (mainland)
| | - Jianan Ren
- Department of Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China (mainland)
| | - Gefei Wang
- Department of Surgery, Jinling Hospital, Nanjing Medical University, Nanjing, Jiangsu, China (mainland)
| | - Qinjie Liu
- Department of Surgery, Jinling Hospital, Nanjing Medical University, Nanjing, Jiangsu, China (mainland)
| | - Kun Guo
- Department of Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China (mainland)
| | - Jieshou Li
- Department of Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China (mainland)
| |
Collapse
|
5
|
Saad A, Herrmann SM, Textor SC. Chronic renal ischemia in humans: can cell therapy repair the kidney in occlusive renovascular disease? Physiology (Bethesda) 2016; 30:175-82. [PMID: 25933818 DOI: 10.1152/physiol.00065.2013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Occlusive renovascular disease caused by atherosclerotic renal artery stenosis (ARAS) elicits complex biological responses that eventually lead to loss of kidney function. Recent studies indicate a complex interplay of oxidative stress, endothelial dysfunction, and activation of fibrogenic and inflammatory cytokines as a result of atherosclerosis, hypoxia, and renal hypoperfusion in this disorder. Human studies emphasize the limits of the kidney adaptation to reduced blood flow, eventually leading to renal hypoxia with activation of inflammatory and fibrogenic pathways. Several randomized prospective clinical trials show that stent revascularization alone in patients with atherosclerotic renal artery stenosis provides little additional benefit to medical therapy once these processes have developed and solidified. Experimental data now support developing adjunctive cell-based measures to support angiogenesis and anti-inflammatory renal repair mechanisms. These data encourage the study of endothelial progenitor cells and/or mesenchymal stem/stromal cells for the repair of damaged kidney tissue.
Collapse
Affiliation(s)
- Ahmed Saad
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | - Sandra M Herrmann
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | - Stephen C Textor
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| |
Collapse
|
6
|
Cayir A, Ugan RA, Albayrak A, Kose D, Akpinar E, Cayir Y, Atmaca HT, Bayraktutan Z, Kara M. The lung endothelin system: a potent therapeutic target with bosentan for the amelioration of lung alterations in a rat model of diabetes mellitus. J Endocrinol Invest 2015; 38:987-98. [PMID: 25847324 DOI: 10.1007/s40618-015-0282-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 03/24/2015] [Indexed: 01/14/2023]
Abstract
PURPOSE The aim of this study is to show the effect of a new mechanism on endothelin (ET) receptors in the physiopathology of diabetes-related pulmonary injury. We tested the hypothesis that dual ET-1 receptor antagonism via bosentan can reverse diabetes-induced lung injury. METHODS The rats (24 male) were separated into four groups: group 1 (HEALTHY): Control group; group 2 (DM): Streptozotocin 60 mg/kg (i.p.); group 3 (DM + BOS-1): Diabetes + bosentan 50 mg/kg per-os; group 4 (DM + BOS-2): Diabetes + bosentan 100 mg/kg per-os. The bosentan treatment was initiated immediately after the onset of STZ-induced diabetes and continued for 6 weeks. RESULTS In the treatment group, SOD activity was significantly increased, although GSH and MDA levels and TNF-α and TGF-β gene expression were decreased. Bosentan 50 mg/kg and bosentan 100 mg/kg showed a significantly down-regulatory effect on ET-1, ET-A, and ET-B mRNA expression. CONCLUSIONS In conclusion, increased endothelin levels in the lung associated with diabetes may be one cause of endothelial dysfunction, cytokine increase, and oxidant/antioxidant imbalance in the pathogenesis of complications that may develop during diabetes. With its multiple effects, bosentan therapy may be an effective option against complications that may develop in association with diabetes.
Collapse
Affiliation(s)
- A Cayir
- Department of Pediatric Endocrinology, Erzurum Regional Education and Research Hospital, 25100, Erzurum, Turkey,
| | | | | | | | | | | | | | | | | |
Collapse
|
7
|
Erdogan MS, Babacan H, Kara MI, Gurler B, Akgul H, Soyler DA. Effect of Capparis spinosa extract on sutural ossification: A stereological study. Arch Oral Biol 2015; 60:1146-52. [DOI: 10.1016/j.archoralbio.2015.04.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 04/08/2015] [Accepted: 04/28/2015] [Indexed: 10/23/2022]
|
8
|
Demir R, Cadirci E, Akpinar E, Cayir Y, Atmaca HT, Un H, Kunak CS, Yayla M, Bayraktutan Z, Demir I. Does Bosentan Protect Diabetic Brain Alterations in Rats? The Role of Endothelin-1 in the Diabetic Brain. Basic Clin Pharmacol Toxicol 2014; 116:236-43. [DOI: 10.1111/bcpt.12318] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Accepted: 08/25/2014] [Indexed: 12/20/2022]
Affiliation(s)
- Recep Demir
- Faculty of Medicine; Department of Neurology; Ataturk University; Erzurum Turkey
| | - Elif Cadirci
- Faculty of Pharmacy; Department of Pharmacology; Ataturk University; Erzurum Turkey
| | - Erol Akpinar
- Faculty of Medicine; Department of Pharmacology; Ataturk University; Erzurum Turkey
| | - Yasemin Cayir
- Faculty of Medicine; Department of Family Medicine; Ataturk University; Erzurum Turkey
| | - Hasan Tarik Atmaca
- Faculty of Veterinary; Department of Pathology; Kırıkkale University; Kırıkkale Turkey
| | - Harun Un
- Faculty of Pharmacy; Department of Biochemistry; Agri Ibrahim Cecen University; Agri Turkey
| | - Celalettin Semih Kunak
- Faculty of Medicine; Department of Pharmacology and Toxicology; Ordu University; Ordu Turkey
| | - Muhammed Yayla
- Faculty of Medicine; Department of Pharmacology; Ataturk University; Erzurum Turkey
| | - Zafer Bayraktutan
- Department of Biochemistry; Regional Research and Education Hospital; Erzurum Turkey
| | - Ilknur Demir
- Department of Paediatry; Regional Research and Education Hospital; Erzurum Turkey
| |
Collapse
|
9
|
Cadirci E, Halici Z, Bayir Y, Albayrak A, Karakus E, Polat B, Unal D, Atamanalp SS, Aksak S, Gundogdu C. Peripheral 5-HT7 receptors as a new target for prevention of lung injury and mortality in septic rats. Immunobiology 2013; 218:1271-83. [PMID: 23694713 DOI: 10.1016/j.imbio.2013.04.012] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Accepted: 04/21/2013] [Indexed: 12/26/2022]
Abstract
Sepsis is a complex pathophysiological event involving metabolic acidosis, systemic inflammatory response syndrome, tissue damage and multiple organ dysfunction syndrome. Although many new mechanisms are being investigated to enlighten the pathophysiology of sepsis, there is no effective treatment protocol yet. Presence of 5-HT7 receptors in immune tissues prompted us to hypothesize that these receptors have roles in inflammation and sepsis. We investigated the effects of 5-HT7 receptor agonists and antagonists on serum cytokine levels, lung oxidative stress, lung histopathology, nuclear factor κB (NF-κB) positivity and lung 5-HT7 receptor density in cecal ligation and puncture (CLP) induced sepsis model of rats. Agonist administration to septic rats increased survival time; decreased serum cytokine response against CLP; decreased oxidative stress and increased antioxidant system in lungs; decreased the tissue NF-κB immunopositivity, which is high in septic rats; and decreased the sepsis-induced lung injury. In septic rats, as a result of high inflammatory response, 5-HT7 receptor expression in lungs increased significantly and agonist administration, which decreased inflammatory response and related mortality, decreased the 5-HT7 receptor expression. In conclusion, all these data suggest that stimulation of 5-HT7 receptors may be a new therapeutic target for prevention of impaired inflammatory response related lung injury and mortality.
Collapse
Affiliation(s)
- Elif Cadirci
- Atatürk University, Faculty of Pharmacy, Department of Pharmacology, Erzurum, Turkey
| | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Albayrak A, Halici Z, Polat B, Karakus E, Cadirci E, Bayir Y, Kunak S, Karcioglu SS, Yigit S, Unal D, Atamanalp SS. Protective effects of lithium: A new look at an old drug with potential antioxidative and anti-inflammatory effects in an animal model of sepsis. Int Immunopharmacol 2013; 16:35-40. [DOI: 10.1016/j.intimp.2013.03.018] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 03/01/2013] [Accepted: 03/15/2013] [Indexed: 12/12/2022]
|
11
|
The protective effect of amiodarone in lung tissue of cecal ligation and puncture-induced septic rats: a perspective from inflammatory cytokine release and oxidative stress. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2013; 386:635-43. [DOI: 10.1007/s00210-013-0862-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Accepted: 03/22/2013] [Indexed: 10/27/2022]
|
12
|
Bilateral ovariectomy in young rats: what happens in their livers during cecal ligation and puncture induced sepsis? J Pediatr Adolesc Gynecol 2012; 25:371-9. [PMID: 23089572 DOI: 10.1016/j.jpag.2012.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Revised: 07/06/2012] [Accepted: 07/11/2012] [Indexed: 11/23/2022]
Abstract
STUDY OBJECTIVE Pediatric ovarian masses comprise a heterogeneous group of benign and malignant lesions. Surgical methods consist of emergency or programmed surgery with tumoral resection and uni/bilateral oophorectomy or salpingo-oophorectomy. We examined whether bilateral ovariectomy (OVX) worsens liver injury during the onset of cecal ligation and puncture (CLP)-induced sepsis in rats. DESIGN The rat groups were: sham, bilateral-OVX, sepsis, and OVX-sepsis. SETTINGS After OVX operation, rats were allowed to recover for 12 weeks. At the end of recovery, CLP was applied 16 hours after sepsis induction. MAIN OUTCOME There was a significant difference in the numerical density of hepatocytes only between the sepsis and the OVX-sepsis groups. Serum ALT and AST were increased significantly in the OVX-sepsis group. NF-κB activation after OVX increased after induction of sepsis. OVX-sepsis group showed marked thrombosis in portal vein branches and the central vein, degeneration in the bile ducts, and widespread ischemic areas in liver sections. Intra-inflammatory cell invasion was observed in both the portal and intrasinusoidal areas. DISCUSSION This study indicates that increases in liver NF-κB activity in ovariectomized rats following CLP-induced sepsis correlates with elevated levels of serum ALT and AST and with histopathologic changes in rat liver. Bilateral OVX therefore appears to play a role in the activation of NF-κB or in production of cytokines in liver cells. Thus, we provided novel insight into the effects of OVX on liver injury following CLP-induced sepsis.
Collapse
|
13
|
Sipal S, Halici Z, Kiki I, Polat B, Albayrak A, Albayrak F, Karakus E, Aksak S, Ozturk B, Gundogdu C. Comparative study of three angiotensin II type 1 receptor antagonists in preventing liver fibrosis in diabetic rats: stereology, histopathology, and electron microscopy. J Mol Histol 2012; 43:723-35. [PMID: 22922994 DOI: 10.1007/s10735-012-9441-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Accepted: 08/11/2012] [Indexed: 01/12/2023]
Abstract
The presence of liver disease in patients with progressively worsening insulin resistance may not be recognized until patients develop manifestations of the metabolic syndrome such as diabetes, hypertension, hyperlipidemia, and vascular disease. It was aimed to investigate whether three angiotensin II type 1 receptor antagonists (ARBs) (olmesartan, losartan, and valsartan) had preventive effect against hepatic fibrosis and this was a common characteristic among ARBs. In current study, 25 adult male rats were used and divided into five groups: the non-diabetic healthy group, alloxan induced diabetic (AID) control group, AID losartan group, AID valsartan group and AID olmesartan group. According to numerical density of hepatocytes, significant difference was found between the non-diabetic healthy group and diabetic control group. All treatments groups were significant when compared to diabetic control group. In diabetic control group it was examined swelling, irregular cristae arrangement in some of mitochondria. It was also determined mitochondria membrane degeneration in some areas of section profiles. In diabetic rats treated with losartan group, there were necrotic hepatocytes. In diabetic rats treated with valsartan group, predominantly, findings were similar to losartan group. In diabetic rats treated with olmesertan group, plates of hepatocytes were quite regular. There were hardly necrotic cells. Not only other organelles such as RER, SER and lysosom but also mitochondrial structures had normal appearance. In the diabetic control group electron microscopy revealed edema in both the cytoplasm and perinuclear area and the nuclear membranes appeared damaged. In conclusion, it was established that the most protective ARB the liver in diabetic rats was olmesartan, followed by losartan.
Collapse
Affiliation(s)
- Sare Sipal
- Department of Pathology, Faculty of Medicine, Ataturk University, 25240, Erzurum, Turkey
| | | | | | | | | | | | | | | | | | | |
Collapse
|
14
|
Altunkaynak BZ, Unal D, Altunkaynak ME, Halici Z, Kalkan Y, Keles ON, Aksak S, Selli J, Unal B. Effects of diabetes and ovariectomy on rat hippocampus (a biochemical and stereological study). Gynecol Endocrinol 2012; 28:228-33. [PMID: 21823905 DOI: 10.3109/09513590.2011.593662] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Oxidative stress is one of the main reasons of both menopause and diabetes. So, it plays crucial role in the pathogeneses of that condition and disease. Therefore, the objective of the present study was to investigate the effects of menopause and diabetes upon the hippocampus using a rat model. Adult female Sprague Dawley rats (n = 24) were allocated randomly as follows; control (C group) ovariectomized (O group), diabetic (D group) and ovariectomy plus diabetic groups (DO group) (n = 6; in each group), respectively. For evaluating the results, tissue biochemistry and stereological analysis were made. Biochemistry results (lipid peroxidase (LPO); catalase (CAT); superoxide dismutase (SOD); total glutatyon (GSH); and myeloperoxidase (MPO) values) in Group C-DO were determined as 12.27, 21.88, 23.08 and 29.90 nmol/gr tissue; 59.3, 70.06, 69.7 and 78.1 mmol/min/mg tissue; 174.2, 156.4, 159.7 and 154.6 mmol/min/mg tissue; 3.63, 3.61, 4.21 and 3.97 nmol/mg tissue; and 5.05, 5.68, 5.58 and 6.19 µmol/min/mg tissue, respectively. Moreover, both menopause and diabetes led to change of lipid profiles. There were significant differences between the control and other groups (Group C and D-DO) (p < 0.01) and among experimental groups (p < 0.01) in terms of neuron number. When the volumes of the hippocampus were compared, there were no significant differences between the all groups (P > 0.05). At this point, we suggested that diabetes could aggravate deleterious effects of ovariectomy.
Collapse
Affiliation(s)
- B Z Altunkaynak
- Department of Histology and Embryology, Medical Faculty of Ondokuz Mayıs University, Samsun, Turkey.
| | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Cadirci E, Halici Z, Odabasoglu F, Albayrak A, Karakus E, Unal D, Atalay F, Ferah I, Unal B. Sildenafil treatment attenuates lung and kidney injury due to overproduction of oxidant activity in a rat model of sepsis: a biochemical and histopathological study. Clin Exp Immunol 2012; 166:374-84. [PMID: 22059996 DOI: 10.1111/j.1365-2249.2011.04483.x] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Sepsis is a systemic inflammatory response to infection and a major cause of morbidity and mortality. Sildenafil (SLD) is a selective and potent inhibitor of cyclic guanosine monophosphate (cGMP)-specific phosphodiesterase PDE5. We aimed to investigate the protective effects of sildenafil on caecal ligation and puncture (CLP)-induced sepsis in rats. Four groups of rats were used, each composed of 10 rats: (i) 10 mg/kg SLD-treated CLP group; (ii) 20 mg/kg SLD-treated CLP group; (iii) CLP group; and (iv) sham-operated control group. A CLP polymicrobial sepsis model was applied to the rats. All groups were killed 16 h later, and lung, kidney and blood samples were analysed histopathologically and biochemically. Sildenafil increased glutathione (GSH) and decreased the activation of myeloperoxidase (MPO) and of lipid peroxidase (LPO) and levels of superoxide dismutase (SOD) in the septic rats. We observed a significant decrease in LPO and MPO and a decrease in SOD activity in the sildenafil-treated CLP rats compared with the sham group. In addition, 20 mg/kg sildenafil treatment in the sham-operated rats improved the biochemical status of lungs and kidneys. Histopathological analysis revealed significant differences in inflammation scores between the sepsis group and the other groups, except the CLP + sildenafil 10 mg/kg group. The CLP + sildenafil 20 mg/kg group had the lowest inflammation score. Sildenafil treatment decreased the serum tumour necrosis factor (TNF)-α level when compared to the CLP group. Our results indicate that sildenafil is a highly protective agent in preventing lung and kidney damage caused by CLP-induced sepsis via maintenance of the oxidant-anti-oxidant status and decrease in the level of TNF-α.
Collapse
Affiliation(s)
- E Cadirci
- Department of Pharmacology, Ataturk University Faculty of Pharmacy, Erzurum, Turkey
| | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Effects of diabetes mellitus on the rat liver during the postmenopausal period. J Mol Histol 2011; 42:273-87. [PMID: 21604006 DOI: 10.1007/s10735-011-9331-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Accepted: 05/09/2011] [Indexed: 12/12/2022]
Abstract
The present study investigated whether diabetes worsened the onset of liver injury/damage during the ovariectomized (OVX)-induced postmenopausal period in rats. Diabetes results in severe complications in humans, such as liver failure. Estrogen and its derivatives are medically acceptable, powerful antioxidant agents that can enable liver and other important organs to defend themselves against oxidative related injury. Estrogen deficiency, which occurs in the postmenopausal period and in individuals with diabetes, may play a significant role in the progression of liver failure. In the present study, rats were divided into four groups: control (Group I), diabetic (Group II), ovariectomy (Group III) and ovariectomy plus diabetes (Group IV). After the experiments, quantitative histopathological and immunohistochemical changes in liver were detected using light microscopy and modern stereological systems. Histopathological examinations showed that there were many necrotic and apoptotic hepatocytes in the lobules of Group II. In addition, there were a larger number of necrotic cells in Group III than Group II. In contrast to Group II, there were also apoptotic cells in the portal areas in Group III. Moreover, evidence of liver injury was higher in the sections of Group IV compared with all other groups. In biochemical findings, there were statistically significant differences between all the groups (P < 0.001) for catalase (CAT), glutathione peroxidase (GSH) and myeloperoxidase (MPx) activity. In addition, the amount of lipid peroxidation (LPO) was significantly different between groups. In stereological results, there were significant differences between Groups I and II and Groups II and IV. The present study provided novel insight into the pernicious effects of ovariectomy on liver injury following the onset of diabetes. Indeed, the present study found that increases in liver oxidative activity in OVX rats following the onset of diabetes correlates with elevated MPx, LPO and histopathological changes in rat liver.
Collapse
|