Thursday, 18 May 2023

#Herbal #Artichoke Exhibits #Antioxidant Activity Against Oxidative Stress, Researchers Reveal

By Kyle J. Norton

Scientists may have found a herbal remedy that processed significant antioxidant activity against the onset and progression of oxidative stress-related diseases, according to studies.
Oxidative stress-related conditions are the diseases associated with cellular damage, including the alternation of cell DNA, and damage of lipids and proteins.

The list of chronic diseases caused by cell oxidation is very long, including atherosclerosis, cancer, diabetes, rheumatoid arthritis, post-ischemic perfusion injury, myocardial infarction, cardiovascular diseases, chronic inflammation, and stroke.

The most common causes of oxidative stress are overexpression of free radicals in the induction of a chain reaction.

Due to the unstable nature of free radicals with unpaired electrons in the outer ring, free radicals are ready to donate or intercept the electrons from other atoms, leading to a chain reaction that can not be stopped until the outring electron are either paired or inhibited by antioxidants.

In contrast to the general belief, the damage caused by free radicals is overly exaggerated, under normal conditions, free radicals produced by internal or external sources are needed by our body for cellular responses and immune function.

However, overexpression of free radicals also known as oxidative stress can be a danger to our health.

Oxidative stress can be acute or chronic. Acute oxidative stress caused by a sudden burst of free radicals due to stress or external sources, in most cases can be inhibited by increasing antioxidant enzymes in the lung.

Chronic oxidative stress is caused by the unbalanced ratio of free radicals and antioxidant enzymes produced by our bodies. The condition is either caused by over expression of free radicals, depletion of antioxidant enzymes, or both.

There are many risk factors that cause oxidative stress. However, in the concerns of the prevalence of chronic diseases associated with the Western diet, some researchers suggested that the link of oxidative diseases in the Western world may result from the promotion of the Western diet over the past few decades.

Dr. Ildiko Erdelyi, the lead scientist said, "A Western-style diet (WD), defined by high-fat, low-calcium, and vitamin D content, is associated with increased risk of human colorectal cancer. Understanding molecular mechanisms altered by the WD is crucial to develop preventive and therapeutic strategies".

And, "consumption of a WD interferes with networks of related biological response pathways involving colonic lipid metabolism, oxidative stress, and the immune response".

Artichoke is a perennial thistle of Cynara cardunculus species of the Cynara genus, belonging to the family Carduoideae native to Southern Europe around the Mediterranean.

The herbal plant has been used in traditional medicine as a liver protective and detoxified agent, and to treat digestive disorders, abdominal pain gas and bloating, etc.

Scientists on finding a natural ingredient for the treatment of oxidative stress-related diseases examined the antioxidant activity of artichokes in the rat model.

Artichoke extracts showed good efficiency in the inhibition in vitro of LDL oxidation. Injection of artichoke extracts also increased the levels of antioxidant glutathione peroxidase against oxidative damage in the tested subjects compared to the control group.

Injection of artichoke extracts also inhibited the expression of a protein oxidation biomarker (2-Aminoadipic semialdehyde) compared to the control group.

In order to reveal more information about artichoke antioxidant activity, researchers examined the phenolic compound content and composition and the antioxidant activity of leaf parts [blades (SLB), petioles, and midribs (SPM)] from various Greek artichoke genotypes.

The leaf blades of most of the genotypes have a high content of flavonoids (mainly luteolin glycoside derivatives), which ranged between 49 and 78% of total phenolic compounds (TPC).

Petioles and midribs phenolic acids (mainly hydroxycinnamic acid derivatives) were the main phenolic compounds, ranging between 64 and 76% of TPC,


The antioxidant activity of blades was significantly higher than that of petiole and midribs for all the genotypes according to the tested assays.

The results of antioxidant differentiation suggested that artichoke leaves (blades, petioles, and midribs) show different bioactive compound profiles in stimulating the different levels of antioxidant properties.

Taken altogether, artichoke may be considered a functional remedy for the prevention and treatment of oxidative stress-related diseases through its antioxidant activity, pending the confirmation of a 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 the international journal Pharma and Bioscience, ISSN 0975-6299.

References
(1) In vitro antioxidant activities of edible artichoke (Cynara scolymus L.) and effect on biomarkers of antioxidants in rats by Jiménez-Escrig A1, Dragsted LO, Daneshvar B, Pulido R, Saura-Calixto F. (PubMed)
(2) Leaf parts from Greek artichoke genotypes as a good source of bioactive compounds and antioxidants by Petropoulos SA1, Pereira C, Barros L, Ferreira ICFR. (PubMed)
(3) Western-Style Diets Induce Oxidative Stress and Dysregulate Immune Responses in the Colon in a Mouse Model of Sporadic Colon Cancer by Ildiko Erdelyi,4 Natasha Levenkova,5 Elaine Y. Lin,8 John T. Pinto,9 Martin Lipkin,4Fred W. Quimby,6 and Peter R. Holt. (PMC)

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