A study focusing on the mechanism that accelerates aging due to smoking found that smoking habits affected the age-related molecule in blood serum.

A research group led by Kaori Nakanishi, assistant professor and Keiko Takihara, professor of the Health Care Center, Osaka University found that smoking habits affected the aging-related molecule ?-klotho (?Kl) in blood serum.

In addition, this group also elucidated that smoking causes a rise in blood serum concentration of fibroblast growth factor (FGF)-21, a factor related to metabolism which has gained attention in recent years. It is thought that these research results could serve as a key to clarifying the mechanism which accelerates this aging, and provide new knowledge about aging-related diseases caused by smoking and prevention of smoking-related accelerated aging.

The group focused on the relationship between smoking and aging, examining the involvement of Klotho in the advancement of aging due to smoking. It was found that the levels of FGF-21 related to metabolism, ?-Klotho, and interleukin(IL)-6, a cytokine related to inflammation, were significantly higher in smokers than in never-smokers. In addition, the blood serum concentration of ?-Klotho rose in stressful conditions such as lack and sleep and being under emotional stress outside of smoking.

FGF-21 is negatively-correlated to adiponectin, which is known as a cytokine related to metabolism, and the rise in FGF-21 in smokers is thought to suggest a metabolic disorder.

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