Withania coagulans extract attenuates oxidative stress-mediated apoptosis of cerebellar purkinje neurons after ischemia/reperfusion injury.

Autor: Heidari Z; Infection Diseases and Tropical Medicine Research Center, Zahedan University of Medical Sciences, Zahedan, IR, Iran.; Department of Histology, School of Medicine, Zahedan University of Medical Sciences, Zahedan, IR, Iran., Mahmoudzadeh-Sagheb H; Infection Diseases and Tropical Medicine Research Center, Zahedan University of Medical Sciences, Zahedan, IR, Iran. Histology@ymail.com.; Department of Histology, School of Medicine, Zahedan University of Medical Sciences, Zahedan, IR, Iran. Histology@ymail.com., Sarbishegi M; Cellular and Molecular Research Center, Zahedan University of Medical Sciences, Zahedan, IR, Iran.; Department of Anatomy, School of Medicine, Zahedan University of Medical Sciences, Zahedan, IR, Iran., Gorgich EAC; Department of Anatomy, School of Medicine, Iran University of Medical Sciences, Tehran, IR, Iran.
Jazyk: angličtina
Zdroj: Metabolic brain disease [Metab Brain Dis] 2021 Oct; Vol. 36 (7), pp. 1699-1708. Date of Electronic Publication: 2021 May 10.
DOI: 10.1007/s11011-021-00745-0
Abstrakt: Cerebral ischemia/reperfusion (I/R) is known to increase reactive oxygen species (ROS) generation, consequences of oxidative stress (OS), and neuronal death in the susceptible brain areas including the cerebellum. Newly, remarkable attention has been paid to a natural diet with the capability to scavenge ROS. Withania coagulans root extract (WCE) is rich in components with antioxidants properties. Therefore, this study aimed to evaluate the effect of WCE on cerebellar Purkinje cells (PCs) against OS-mediated apoptosis after I/R injury. In this experimental study 64 male adult Wistar rats were randomly divided into 4 groups (n = 16) as follows: control, sham, I/R, and WCE 1000 + I/R. I/R animals were pretreated with daily administration of hydro-alcoholic WCE (1000 mg/kg) or distilled water as a vehicle for 30 days before I/R injury. After 72 h, the animals were sacrificed, the cerebellum tissue was removed and used for biochemical (CAT, SOD, GPx, and MDA levels) and histopathological (Nissl and TUNEL staining) assays. Findings showed that the MDA level and the number of apoptotic neurons significantly increased and viable Purkinje neurons decreased in I/R injury (p < 0.05). Administration of 1000 mg/kg WCE reduced MDA level and enhanced antioxidants activity including CAT, SOD, and GPx significantly. In addition, intact surviving PCs increased. At the same time, TUNEL-positive neurons decreased significantly in the WCE pre-treated group (p < 0.05). These findings suggest that WCE can counteract cerebral I/R-induced OS and associated neuronal death by enhancement of ROS scavenging and antioxidant capacity. It appears that pre-treatment with 1000 mg/kg WCE for thirty days can protect PCs against OS-mediated apoptosis after I/R injury.
(© 2021. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
Databáze: MEDLINE
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