scholarly journals Tempol ameliorates polycystic ovary syndrome through attenuating intestinal oxidative stress and modulating of gut microbiota composition-serum metabolites interaction

Redox Biology ◽  
2021 ◽  
Vol 41 ◽  
pp. 101886
Author(s):  
Tianhe Li ◽  
Tingting Zhang ◽  
Huimin Gao ◽  
Ruixia Liu ◽  
Muqing Gu ◽  
...  
2020 ◽  
Vol 98 (11) ◽  
pp. 803-809 ◽  
Author(s):  
Yuanjiao Liang ◽  
Qi Ming ◽  
Jinlan Liang ◽  
Yan Zhang ◽  
Hong Zhang ◽  
...  

The objective was to explore if and how the microbiota changed in polycystic ovary syndrome (PCOS) women compared with healthy women. Eight obese PCOS (PO group), 10 nonobese PCOS (PN group), and nine healthy normal weight women (control) (C group) were enrolled. Insulin (INS), testosterone (T), follicle-stimulating hormone (FSH), luteinizing hormone (LH), estrogen (E2), and dehydroepiandrosterone (DHEA) were detected with radioimmunoassay. Antimullerian hormone (AMH), fasting glucose, and hemoglobin A1c (HbA1c) were determined by a chemiluminescence immunoassay, glucose oxidase method, and HPLC, respectively. Gut microbiota composition was evaluated by PCR. Alpha diversity was assessed using Chao1 and the Shannon index. PCOS women showed significantly higher T, LH, and LH/FSH and lower FSH levels than the C group (p < 0.05). The AMH level was significantly higher in the PO than in the PN group (p < 0.05). The PO group presented a significantly higher fasting INS level and HMOA-IR scores than the other groups, lower observed SVs and alpha diversity than the C group, higher beta diversity than the PN group (p < 0.05), and decreased abundances of genera (mainly butyrate producers). Regression analysis showed that decreased abundances of several genera were correlated with higher circulating T and impaired glucose metabolism. PCOS is associated with changes in the gut microbiota composition. Obesity has a driving role in the development of dysbiotic gut microbiota in PCOS.


Author(s):  
Reveka Gyftaki ◽  
Sofia Gougoura ◽  
Nikolaos Kalogeris ◽  
Vasiliki Loi ◽  
George Koukoulis ◽  
...  

2007 ◽  
Vol 6 (1) ◽  
pp. 29 ◽  
Author(s):  
Muammer Karadeniz ◽  
Mehmet Erdogan ◽  
Afig Berdeli ◽  
Sadik Tamsel ◽  
Fusun Saygili ◽  
...  

2021 ◽  
Vol 3_2021 ◽  
pp. 36-43
Author(s):  
Chernukha G.E. Chernukha ◽  
Miroshina E.D. Miroshina ◽  
Priputnevich T.V. Priputnevich ◽  

2019 ◽  
Vol 66 (10) ◽  
pp. 859-870 ◽  
Author(s):  
Jing Xue ◽  
Xiaorong Li ◽  
Ping Liu ◽  
Ke Li ◽  
Liping Sha ◽  
...  

2020 ◽  
Vol 14 (2) ◽  
pp. 48-55
Author(s):  
Ayesha Akhter ◽  
Sultana Ferdousi ◽  
Shamima Sultana ◽  
Musfika Mostafa

Background: Polycystic ovary syndrome (PCOS) is a very common reproductive hormone disorder. Altered cardiovagal autonomic modulation and oxidative stress may predispose PCOS patients to increased cardiovascular morbidity. Objective: To assess the relationship between parasympathetic reactivity and oxidative stress in patients with PCOS. Methods: This crosssectional study was conducted in the Department of Physiology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Shahbagh, Dhaka from September 2018 to August 2019 on 35 newly diagnosed obese (BMI ≥25kg/m2) PCOS patients aged 20-35 years. Age and BMI matched 35 apparently healthy women were also enrolled as control. Three noninvasive conventional autonomic function tests, such as heart rate response to deep breathing, standing and the Valsalva maneuver, were used for evaluation of parasympathetic reactivity. For assessment of oxidative stress, plasma malondialdehyde level (oxidant) and plasma catalase level(antioxidant) were measured in all subjects by spectrophotometry. Data were expressed as mean± SD. For statistical analysis Independent sample “t” test, Pearson’s correlation test and multiple regression analysis were done as applicable. Results: In this study PCOS patients had significantly higher (p<0.01)resting heart rate, systolic and diastolic blood pressure than that of healthy control. But Expiration: Inspiration ratio, Expiration:Inspiration difference and 30:15 ratio during standing were significantly lower (p<0.001, p<0.01 and p<0.05 respectively) in PCOS compared to control. In addition, plasma catalase level was significantly lower (p<0.01)and plasma malondialdehyde level significantly higher (p<0.001) in PCOS in comparison to healthy control. Multiple regression analysis showed plasma catalase as a significant positive predictor (p<0.05) of the Valsalva ratio in PCOS. Also, Valsalva ratio showed significant negative association (p<0.05) with plasma malondialdehyde (p<0.01)in PCOS. Conclusion: Based on these results it is concluded that impaired parasympathetic reactivity showed inverse relationship with oxidative stress in PCOS. J Bangladesh Soc Physiol. 2019, December; 14(2): 48-55


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