scholarly journals Cardiovascular Properties of the Androgen-Induced PCOS Model in Rats: The Role of Oxidative Stress

2021 ◽  
Vol 2021 ◽  
pp. 1-16
Author(s):  
Jovana Joksimovic Jovic ◽  
Jasmina Sretenovic ◽  
Nikola Jovic ◽  
Jovan Rudic ◽  
Vladimir Zivkovic ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Blood Pressure ◽  
Heart Tissue ◽  
Female Rats ◽  
Histological Evaluation ◽  
Childbearing Age ◽  
Oxidative Stress Parameters ◽  
Arterial Blood ◽  
Stress Parameters

Polycystic ovary syndrome (PCOS) is a multifaced reproductive endocrinopathy affecting 6-20% of women of childbearing age. It was previously shown that women with PCOS have an increased risk of cardiovascular (CV) diseases. The aim of this study was to evaluate the cardiodynamic parameters of isolated rats’ hearts, blood pressure levels, and histomorphological changes in the heart tissue following the androgen-induced PCOS model in rats and the role of oxidative stress in the development of these CV properties of PCOS. 21-day-old female rats ( n = 12 ) were divided into control and PCOS groups. PCOS was induced by administration of testosterone enanthate (1 mg/kg BW, daily) during 35 days. During the autoregulation protocol (40-120 mmHg) on the Langendorff apparatus, ex vivo cardiodynamic parameters of retrogradely perfused hearts showed enhanced contractile function and increased lusitropic effects in the left ventricle (LV) in PCOS rats. Systolic and diastolic pressures in LV were elevated at all perfusion pressure values. Systemic arterial systolic blood pressure showed borderline elevation, while mean arterial blood pressure was significantly higher in PCOS rats. Histological evaluation of heart tissue depicted hypertrophic (8.3%) alterations in LV cardiomyocytes and increase (7.3%) in LV wall thickness. Oxidative stress parameters were altered in systemic circulation, coronary venous effluent (CVE), and heart tissue. Levels of superoxide dismutase and reduced glutathione were decreased in blood and heart tissue, while catalase activity was not altered. Degree of lipid peroxidation was increased in circulation as well as heart tissue. Increased levels of O2- in CVE indicated the cardiotoxic effects in the rat PCOS model. The mentioned alterations of oxidative stress parameters in the blood, CVE, and heart could be recommended as potential contributors underlying the development of CV risk in PCOS women.

Protective role of Sterculia tragacantha aqueous extract on pancreatic gene expression and oxidative stress parameters in streptozotocin-induced diabetic rats

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Basiru Olaitan Ajiboye ◽  
Babatunji Emmanuel Oyinloye ◽  
Jennifer Chidera Awurum ◽  
Sunday Amos Onikanni ◽  
Adedotun Adefolalu ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Body Weight ◽  
Protective Role ◽  
Diabetic Rats ◽  
Gene Expressions ◽  
Ki 67 ◽  
Oxidative Stress Parameters ◽  
And Oxidative Stress ◽  
Stress Parameters

Abstract Objectives The current study evaluates the protective role of aqueous extract of Sterculia tragacantha leaf (AESTL) on pancreatic gene expressions (insulin, PCNA, PDX-1, KI-67 and GLP-1R) and oxidative stress parameters in streptozotocin-induced diabetic rats. Methods Diabetes mellitus was induced into the experimental Wistar animals via intraperitoneal (IP) injection of streptozotocin (35 mg/kg body weight) and 5% glucose water was given to the rats for 24 h after induction. The animals were categorized into five groups of 10 rats each as follows normal control, diabetic control, diabetic rats administered AESTL (150 and 300 mg/kg body weight) and diabetic rats administered metformin (200 mg/kg) orally for two weeks. Thereafter, the animals were euthanized, blood sample collected, pancreas harvested and some pancreatic gene expressions (such as insulin, PCNA, PDX-1, KI-67, and GLP-1R)s as well as oxidative stress parameters were analyzed. Results The results revealed that AESTL significantly (p<0.05) reduced fasting blood glucose level, food and water intake, and lipid peroxidation in diabetic rats. Diabetic rats administered different doses of AESTL showed a substantial upsurge in body weight, antioxidant enzyme activities, and pancreatic gene expressions (insulin, PCNA, PDX-1, KI-67, and GLP-1R). Conclusions It can therefore be concluded that AESTL has the ability to protect the pancreas during diabetes mellitus conditions.

scholarly journals Clinical Significance of ROMs, OXY, SHp and HMGB-1 in Canine Leishmaniosis

Animals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 754
Author(s):  
Michela Pugliese ◽  
Alessandra Sfacteria ◽  
Gaetano Oliva ◽  
Annastella Falcone ◽  
Manuela Gizzarelli ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Lymph Nodes ◽  
Clinical Signs ◽  
Biological Tissues ◽  
Stress Index ◽  
Control Group ◽  
Canine Leishmaniosis ◽  
Oxidative Stress Parameters ◽  
Stress Parameters

This study aimed to investigate the role of oxidative stress parameters (ROMs, OXY, SHp), the Oxidative Stress index (OSi), and High Mobility Group Box-1 protein (HMGB-1) in canine leishmaniosis (CanL). For this study, thirty dogs, naturally infected with Leishmania spp. (Leishmania Group, LEISH) and ten healthy adult dogs (control group, CTR) were included. The diagnosis of CanL was performed by a cytological examination of lymph nodes, real time polymerase chain reaction on biological tissues (lymph nodes and whole blood), and an immunofluorescence antibody test (IFAT) for the detection of anti-Leishmania antibodies associated with clinical signs such as dermatitis, lymphadenopathy, onychogryphosis, weight loss, cachexia, lameness, conjunctivitis, epistaxis, and hepatosplenomegaly. The HMGB-1 and oxidative stress parameters of the LEISH Group were compared with the values recorded in the CTR group (Mann Whitney Test, p < 0.05). Spearman rank correlation was applied to evaluate the correlation between the HMGB-1, oxidative stress biomarkers, hematological and biochemical parameters in the LEISH Group. Results showed statistically significant higher values of SHp in the LEISH Group. Specific correlation between the ROMs and the number of red blood cells, and between HGMB-1 and SHp were recorded. These preliminary data may suggest the potential role of oxidative stress in the pathogenesis of CanL. Further studies are undoubtedly required to evaluate the direct correlation between inflammation parameters with the different stages of CanL. Similarly, further research should investigate the role of ROMs in the onset of anemia.

scholarly journals Effect of omega-3 fatty acids supplementation on cardio-metabolic and oxidative stress parameters in patients with chronic kidney disease: a systematic review and meta-analysis

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Siavash Fazelian ◽  
Fatemeh Moradi ◽  
Shahram Agah ◽  
Akramsadat Hoseini ◽  
Hafez Heydari ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Systematic Review ◽  
Blood Pressure ◽  
Meta Analysis ◽  
Density Lipoprotein ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Oxidative Stress Parameters ◽  
And Oxidative Stress ◽  
Stress Parameters

Abstract Background Omega-3 fatty acids (FAs) have been suggested as a beneficial supplement in chronic kidney disease (CKD) patients, but the results of randomized clinical trials (RCTs) are controversial. We conducted a systematic review and meta-analysis to evaluate all the RCTs about the impact of omega-3 FAs supplementation on cardiometabolic outcomes and oxidative stress parameters in patients with CKD. Methods We performed a systematic database search in PubMed/MEDLINE, EMBASE, Scopus, Web of Science, and Cochrane Central, up to May 2020. We included all placebo-controlled randomized trials that assessed the effect of omega-3 FAs supplementation on any cardiometabolic outcomes: blood pressure, total cholesterol (TC), low-density lipoprotein (LDL) and high-density lipoprotein (HDL) or triglycerides (TG) and oxidative stress parameters. Data were pooled using DerSimonian–Laird’s random-effects model. Results Finally, thirteen articles met the inclusion criteria for this review omega-3 FAs supplementation significantly decrease TC (SMD: -0.26; 95% CI: − 0.51, − 0.02; I2 = 52.7%), TG (SMD: -0.22; 95% CI: − 0.43, − 0.02; I2 = 36.0%) and Malondialdehyde (MDA) levels (SMD: -0.91; 95% CI: − 1.29, − 0.54; I2 = 00.0%) and also significantly increase superoxide dismutase (SOD) (SMD: 0.58; 95% CI: 0.27, 0.90; I2 = 00.0%) and Glutathione peroxidase (GPx) (SMD: 0.50; 95% CI: 0.14, 0.86; I2 = 00.0%) activities. However our results show that omega-3 FAs supplementation have no significant effects on HDL, LDL and blood pressure. Conclusion This systematic review and meta-analysis supports current evidence for the clinical benefit of omega-3 FAs intake to improve cardiometabolic parameters in CKD patients. However, well-designed RCTs still needed to provide a conclusive picture in this field.

scholarly journals Power of Lifestyle Medicine: Improving Oxidative Stress Profile of High Risk Lifestyle Disease Patients in Rural Germany

2021 ◽  
Vol 5 (Supplement_2) ◽  
pp. 23-23
Author(s):  
Sarah Husain ◽  
Heike Englert
Keyword(s):  
Oxidative Stress ◽  
Physical Activity ◽  
Blood Pressure ◽  
High Risk ◽  
Chronic Diseases ◽  
Lifestyle Intervention ◽  
Lifestyle Medicine ◽  
Oxidative Stress Parameters ◽  
Lifestyle Disease ◽  
Stress Parameters

Abstract Objectives Lifestyle diseases share risk factors similar to prolonged exposure to three modifiable lifestyle behaviours—smoking, unhealthy diet, and physical inactivity—and result in the development of chronic diseases. However, Inflammation and oxidative stress contribute to the pathophysiology of gamut of chronic diseases. Therefore, we examined the links between oxidative stress parameters and chronic diseases through a lifestyle medicine concept. This study evaluates if lifestyle medicine concept is suitable for improving the oxidative stress parameters in the participants after 10 weeks of intervention. Methods The participants were recruited from the public in two separate small towns in rural North-West Germany. Lifestyle medicine concept focuses on 4 very important pillars of overall health; nutrition, physical activity, stress and social health. The intervention group (n = 103) took part in a 10-week intensive lifestyle intervention programme followed which consists of 15 biweekly seminars, workshops (cooking, physical activity, integration, stress management) shopping tours followed bi-monthly seminars for our Alumni's. Our control group (n = 57) was not given any treatment. Plasma Glutathione (GSH), Superoxide dismutase (SOD), Lipid peroxidation (LPO), total phenol content (TPC) and catalyse enzyme (CAT) along with anthropometric data, lipid profile, Hba1c, Fasting glucose, food logs were collected at baseline, at 10 weeks, 6-month and 12-month intervals. Results Post lifestyle intervention (after 10 weeks) values revealed significant reduction of systolic blood pressure (P &lt; 0.0001) and diastolic blood pressure (P &lt; 0.0001) besides all fasting lipids decreased. Moreover, there was significant increase in the GSH (P &lt; 0.0001), CAT (P &lt; 0.0001), TPC (P &lt; 0.0001) and SOD (P &lt; 0.0001), whereas significant decrease in the MDA (P &lt; 0.0001) was recorded. Conclusions Preliminary data from our lifestyle intervention study suggest that a well-planned lifestyle medicine concept is able to improve oxidative stress parameters in high risk lifestyle disease participants in rural German. Funding Sources www.bmbf.de

scholarly journals Correlation between Apelin and Some Angiogenic Factors in the Pathogenesis of Preeclampsia: Apelin-13 as Novel Drug for Treating Preeclampsia and Its Physiological Effects on Placenta

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Reham Z. Hamza ◽  
Abdel Aziz A. Diab ◽  
Mansour H. Zahra ◽  
Ali K. Asalah ◽  
Suzan M. M. Moursi ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Blood Pressure ◽  
Growth Factor ◽  
Angiogenic Factors ◽  
Female Rats ◽  
Albino Rats ◽  
Arterial Blood ◽  
Angiogenic Proteins ◽  
Ifn Γ ◽  
Urine Proteins

Preeclampsia (PE) is one of the commonest causes for maternal and fetal morbidity and mortality. Imbalances of angiogenic factors, oxidative stress, and inflammatory response have a role in the pathogenesis of PE. Data regarding the circulating apelin level and its role in PE remains controversial. This study was formulated to assess the serum apelin level in PE, investigate its correlation with some inflammatory, oxidative stress, and angiogenic proteins in a nitric oxide synthase inhibitor; the N (gamma)-nitro-L-arginine methyl ester (L-NAME)-induced rat model of PE and determine whether apelin administration could protect against development of PE. 40 healthy adult female albino rats and 10 adult male albino rats were used in this study. The pregnant female rats were randomly divided into three groups: group 1 (normal pregnant group), group 2 (PE-induced group), injected subcutaneously with 75 mg L-NAME/kg bodyweight/day starting from day 9 to 20 of gestation, and group 3 (PE-induced group supplemented with apelin (PE + apelin)); PE induced as before and simultaneously subcutaneously injected with apelin-13 (6 × 10−8 mol/kg bodyweight/twice daily) beginning from day 6 to 20 of gestation. In all groups, blood pressure and urine protein were determined at gestation days (GD) 0, 10, and 18. Moreover, serum apelin, placental growth factor (PLGF), vascular endothelial growth factor (VEGF), soluble fms-like tyrosine kinase-1 (sFlt-1), soluble endoglin (sEng), interferon-gamma (IFN-γ), and interleukin-10 (IL-10) levels and serum superoxide dismutase enzyme (SOD) and catalase (CAT) activities of all groups were estimated at the end of experiment. Placental histopathological examination was also performed. PE-induced rats showed significantly decreased serum apelin levels. Moreover, they showed significantly increased blood pressures, urine proteins, sFlt-1, sEng, and IFN-γ (mean arterial blood pressure, urine proteins, sFlt-1, sEng, and IFN-γ showed significant negative correlations with serum apelin level), but it showed significantly decreased VEGF, PLGF, IL-10, SOD, and CAT (VEGF, PLGF, IL-10, and SOD showed significant positive correlations with serum apelin level). In contrast, exogenous apelin administration significantly ameliorated these parameters together with improvement in the placental histoarchitecture in the apelin-supplemented PE group. This study demonstrated the protective effects of apelin administration on the pathogenesis of PE.

Effects of diphenyl diselenide on lipid profile and hepatic oxidative stress parameters in ovariectomized female rats

2011 ◽  
Vol 63 (5) ◽  
pp. 663-669 ◽  
Author(s):  
Juliana Trevisan da Rocha ◽  
Simone Pinton ◽  
Alexandre Mazzanti ◽  
Cinthia Melazzo Mazzanti ◽  
Diego Vilibaldo Beckemann ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Lipid Profile ◽  
Female Rats ◽  
Diphenyl Diselenide ◽  
Oxidative Stress Parameters ◽  
Hepatic Oxidative Stress ◽  
Stress Parameters
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