Sunday, 26 July 2020

Herbal Ashwagandha Reduces the Neuons' Damage After Cerebral Infarction

By Kyle J. Norton

Cardiovascular disease is a chronic medical condition characterized by narrowed or blocked blood vessels that can lead to a heart attack including chest pain (angina) or stroke.


Stroke is a result of a blockage in the blood vessels (ischemic stroke) or bleeding (hemorrhagic stroke) that are associated with ischemic stroke, transient ischemic attack, or non-traumatic intracranial hemorrhage.

According to the statistics, stroke is the leading cause of serious, long-term disability in the United States. Every year, almost 795,000 Americans suffer a stroke, including 600,000 of first attacks, and 185,000 of recurrent attacks. 

Nearly three-quarters of all strokes occur in people over the age of 65.

Brain ischemia is a condition caused by insufficient blood flow to the brain to meet metabolic demand, leading to irreversible brain damage in severe cases.

In other words, brain ischemia-induced the death of neurons of the affected tissues.

A neuron or nerve cell made of a cell body (also called soma), dendrites and an axon, is a cell in the nervous system that carries electrical impulses.

Neurons are core components of the brain, spinal cord and peripheral nerves that play an essential role to process and transmit information.

Brain ischemia can be classified into
* Focal ischemia is a condition caused by damage to a specific region of the brain; and

* Global ischemia is a condition of damage that affects the wide areas of brain tissue, leading to symptoms of impairments in vision, body movement, and speaking.

A cerebral infarction is an area of the brain caused by a blockage or narrowing in the arteries supplying blood and oxygen to the brain.

Ashwagandha also is known as Withania somnifera is a nightshade plant in the genus of Withania, belonging to the family Solanaceae, native to the dry parts of India, North Africa, Middle East, and the Mediterranean.

The herbal medicine has been considered as Indian ginseng and used in Ayurvedic medicine over 3000 years to treat tumors and tubercular glands, carbuncles, memory loss, and ulcers and considered as anti-stress, cognition-facilitating, anti-inflammatory, and anti-aging herbal medicine.

In the urgency to discover a natural ingredient for the treatment of stroke, researchers examined the effects of Withaferin A (WA), a steroidal lactone derived from the plant Withania somnifera, on experimentally induced cerebral infarction.

According to the results of the experiment,
WA treatment (25, 50 or 100mg/kg body weight) significantly reduced the infarct area in a carotid ligation model.

Furthermore, the application of WA reduced intimal hyperplasia and proliferating cell nuclear antigen (PCNA) associated with cell replication by suppressing PI3K/Akt signaling involved neuron's apoptosis following cerebral ischemia/reperfusion injury.

Moreover, besides inhibiting the expression of proteins associated with brain cell apoptosis following cerebral ischemia/reperfusion injury, WA also elevated the genes that suppress the production of apoptotic cytokines and the promotion of cell cycle division.

More importantly, in vitro, WA exposure severely downregulated matrix metalloproteinases (MMP)-2 and -9 that play a critical role in the degradation of the components of the extracellular matrix and inhibited migration of DGF-stimulated A7r5 cells and A7r5 cells proliferation significantly.

Based on the evidence, researchers said, WA exerted neuroprotective effects by activating the PI3K/Akt pathway, modulating the expression of MMPs, and inhibiting the migration of VSMCs.".

Taken altogether, Ashwagandha may be considered a neuroprotective remedy, pending to the confirmation of the larger sample size and multicenter human study.


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Author Biography
Kyle J. Norton (Scholar, Master of Nutrition, All right reserved)

Health article writer and researcher; Over 10.000 articles and research papers have been written and published online, including worldwide health, ezine articles, article base, health blogs, self-growth, best before it's news, the karate GB daily, etc.,.
Named TOP 50 MEDICAL ESSAYS FOR ARTISTS & AUTHORS TO READ by Disilgold.com Named 50 of the best health Tweeters Canada - Huffington Post
Nominated for shorty award over last 4 years
Some articles have been used as references in medical research, such as international journal Pharma and Bioscience, ISSN 0975-6299.

Sources
(1) Protection against cerebral infarction by Withaferin A involves inhibition of neuronal apoptosis, activation of PI3K/Akt signaling pathway, and reduced intimal hyperplasia via inhibition of VSMC migration and matrix metalloproteinases by Zhang QZ1, Guo YD2, Li HM3, Wang RZ4, Guo SG5, Du YF. (PubMed)

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