scholarly journals Glycyrrhizic acid ameliorates submandibular gland oxidative stress, autophagy and vascular dysfunction in rat model of type 1 diabetes

2022 ◽  
Vol 12 (1) ◽  
Author(s):  
Saad Mohamed Asseri ◽  
Nehal M. Elsherbiny ◽  
Mohamed El-Sherbiny ◽  
Iman O. Sherif ◽  
Alsamman M. Alsamman ◽  
...  

AbstractThe burden of diabetes mellitus (DM) and associated complications is increasing worldwide, affecting many organ functionalities including submandibular glands (SMG). The present study aims to investigate the potential ameliorative effect of glycyrrhizic acid (GA) on diabetes-induced SMG damage. Experimental evaluation of GA treatment was conducted on a rat model of type I diabetes. Animals were assigned to three groups; control, diabetic and GA treated diabetic groups. After 8 weeks, the SMG was processed for assessment of oxidative stress markers, autophagy related proteins; LC3, Beclin-1 and P62, vascular regulator ET-1, aquaporins (AQPs 1.4 and 5), SIRT1 protein expressions in addition to LC3 and AQP5 mRNA expressions. Also, parenchymal structures of the SMG were examined. GA alleviated the diabetes-induced SMG damage via restoring the SMG levels of oxidative stress markers and ET-1 almost near to the normal levels most probably via regulation of SIRT1, AQPs and accordingly LC-3, P62 and Beclin-1levels. GA could be a promising candidate for the treatment of diabetes-induced SMG damage via regulating oxidative stress, autophagy and angiogenesis.

2014 ◽  
Vol 75 ◽  
pp. S42 ◽  
Author(s):  
Premysl Mladenka ◽  
Tomáš Filipský ◽  
Michal Ríha ◽  
Jaroslava Vávrová ◽  
Magdalena Holecková ◽  
...  

2011 ◽  
Vol 109 (2) ◽  
pp. 123-129 ◽  
Author(s):  
Luis A. Méndez-Cuesta ◽  
Berenice Márquez-Valadez ◽  
Verónica Pérez-De la Cruz ◽  
Perla D. Maldonado ◽  
Ricardo A. Santana ◽  
...  

2021 ◽  
Vol 12 (1) ◽  
pp. 545-560
Author(s):  
Pacôme Kouadio N’Go ◽  
Omar Touhami Ahmed Ahami ◽  
Aboubaker El Hessni ◽  
Fatima-Zahra Azzaoui ◽  
Youssef Aboussaleh ◽  
...  

Abstract Objective Alzheimer’s disease (AD) is a threatening disease for African populations in the upcoming years because of the increase in their expectancy of life. Here, we investigated whether natural products from Chrysophyllum perpulchrum as catechin and two dimeric procyanidins (catechin + hexose) could prevent progression of oxidative stress and cognitive changes using an AD-like rat model induced by Aβ1-40 injection into the hippocampal CA1 subfield. Methodology Adult male Wistar rats were either microinjected with 1% ammonia as a vehicle (10 µL) or aggregated Aβ1-40 at 10 µg bilateral hippocampus. On the 14th day of post-surgery, some Aβ rats were treated with melatonin (10 mg/kg i.p.) or with the Chrysophyllum perpulchrum extract (300 mg/kg p.o.), and some sham-operated rats received the extract alone. Cognitive abilities were tested with Y-maze, object recognition test and Morris Water Maze. Oxidative stress markers as well as the level of activated microglial cells were assayed in the brain. Results Aβ rats exhibited significant deficits of recognition memory and spatial learning. This was associated with an increase of microglia Iba 1 immunoreactivity as well as nitric oxide (NO), malondialdehyde and superoxide dismutase levels but not to the thiol content in the hippocampus, prefrontal cortex and septum of AD-like rats. The Chrysophyllum perpulchrum extract treatment mitigated Aβ-induced cognitive impairments and reversed microglia overactivation and subsequent generation of oxidative stress markers. Interestingly, the neuroprotective actions of the Chrysophyllum perpulchrum extract seem to be comparable to the control drug melatonin used albeit with some more beneficial effects. Conclusion These findings are preliminary and should be strengthened by more pharmacological studies of bioactive compounds of Chrysophyllum perpulchrum before being proposed as a promising drug against AD.


2009 ◽  
Vol 27 (15_suppl) ◽  
pp. e20671-e20671
Author(s):  
G. Mantovani ◽  
G. Mercuro ◽  
M. Dessì ◽  
C. Madeddu ◽  
R. Serpe ◽  
...  

e20671 Background: We previously showed on 31 cancer patients (pts) that early cardiac abnormalities occurred at epirubicin (EPI) doses of 200 mg/m2 and persisted throughout subsequent EPI doses and even up to 18 months. Early contractility impairment, i.e. Strain rate (SR) reduction was detected by tissue doppler imaging (TDI) associated with high levels of inflammatory/oxidative stress markers. Renin-angiotensin system activation has been suggested to play an important role in the pathogenesis of Anthracycline-induced cardiotoxicity. Methods: A phase II placebo-controlled study was designed to investigate the possible role of telmisartan (an antagonist of angiotensine II type I receptor) in preventing both early preclinical and late myocardial damage induced by EPI. The correlation with changes of biochemical/inflammatory markers was also assessed. Planned sample size was 100 pts (50 pts per arm). Inclusion criteria: 18–70 y, histologically confirmed cancer, previously untreated and candidates for an EPI-based regimen; LVEF ≥55%; ECOG PS 0–2, no history of cardiac disease and previous mediastinal irradiation. Eligible pts were randomized to receive telmisartan 40 mg (1 tablet)/day or placebo starting 1 week before EPI until 6 months after the end of EPI administration. TDI as well as inflammatory/oxidative stress markers were assessed at baseline, 24 hours and 7 days at EPI doses of 100, 200, 300, and 400 mg/m2. Results: At December 2008 we enrolled 27 pts (M/F: 7/20, mean±SD age 58±14 years): 14 telmisartan and 13 placebo. 15 pts completed EPI treatment (8 telmisartan and 7 placebo). A significant reduction of SR peak was observed at 200mg/m2 of EPI in the placebo arm. Viceversa no significant TDI changes occurred in the treatment arm. Proinflammatory cytokines did not change in both arms whilst reactive oxygen species increased significantly in the placebo arm. Conclusions: The study is in progress. No significant financial relationships to disclose.


2013 ◽  
Vol 61 ◽  
pp. 36-41 ◽  
Author(s):  
Zsolt Radák ◽  
Gabriella Silye ◽  
Csaba Bartha ◽  
Judit Jakus ◽  
Éva Stefanovits-Bányai ◽  
...  

2017 ◽  
Vol 653 ◽  
pp. 288-295 ◽  
Author(s):  
Vijayasree V. Giridharan ◽  
Lutiana R. Simões ◽  
Valdemira S. Dagostin ◽  
Jaqueline S. Generoso ◽  
Gislaine T. Rezin ◽  
...  

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