Hydrogen Sulfide: New Anti-ageing Agent

Researchers have found 15 metabolites whose levels in the blood correlate with frailty.

After exploring hydrogen sulfide’s plethora of potential anti-ageing pathways, researchers say that hydrogen sulfide (H2S) may play a wide-ranging role in staving off ageing.

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‘people who suffer from frailty are more vulnerable to oxidative stress.’

H2S has been gaining increasing attention as an important endogenous signaling molecule because of its significant effects on the cardiovascular and nervous systems, the team noted.

Hydrogen sulfide is produced within the human body, and has a variety of important physiological effects. For example, it relaxes the vascular endothelium and smooth muscle cells, which is important to maintaining clean arteries as one ages, explained first author Zhi-Sheng Jiang, of the University of South China, Hunan.

It functions as an antioxidant. And it inhibits expression of pro-inflammatory factors, all of which "imply an important role in ageing and age-associated diseases," according to the study.

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For example, mice lacking CSE, the gene for an enzyme involved in producing H2S, manifest extensive, premature arteriosclerosis, an inevitable consequence of ageing, said Jiang.

The gene, klotho, which appears to be upregulated by hydrogen sulfide, is thought to extend lifespan via a number of different pathways, some of which promote production of endogenous antioxidants, according to the their report.

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Produced in the kidneys, it has direct angiotensin-converting enzyme (ACE) inhibiting activity; that is, it’s an ACE inhibitor, just like certain drugs that mitigate high blood pressure. Not surprisingly, plasma H2S declines with age, and is lower in spontaneously hypertensive rats than in those with normal blood pressure. More generally, a lack of H2S is implicated in cardiovascular disease.

A decline in H2S is also thought to undermine neurological health. Endogenous H2S has been found wanting in an animal model of Parkinson’s disease, and is found to be depressed in the brains of patients with Alzheimer’s disease. There are even suggestions, mostly in animal models, but also in human studies, that H2S may be protective against cancer, according to the report.

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"Data available so far strongly suggest that H2S may become the next potent agent for preventing and ameliorating the symptoms of ageing and age-associated diseases," concluded Jiang.

In the future, he asserted, people may take H2S via food, or as an anti-ageing supplement.

The results appeared online ahead of print in the journal Molecular and Cellular Biology.

Source-Eurekalert