Black Tea High-Molecular-Weight Polyphenol Increases the Motility of Sea Urchin Sperm by Activating Mitochondrial Respiration | Zendy

Ayako Kikuchi | Zendy; Kogiku Shiba | Zendy; Tetsuo Ozawa | Zendy; Kentaro Nakano | Zendy; Kazuo Inaba | Zendy; Osamu Numata | Zendy

Open Access

Black Tea High-Molecular-Weight Polyphenol Increases the Motility of Sea Urchin Sperm by Activating Mitochondrial Respiration

Author(s) -

Ayako Kikuchi,

Kogiku Shiba,

Tetsuo Ozawa,

Kentaro Nakano,

Kazuo Inaba,

Osamu Numata

Publication year - 2012

Publication title -

bioscience biotechnology and biochemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.509

H-Index - 116

eISSN - 1347-6947

pISSN - 0916-8451

DOI - 10.1271/bbb.120493

Subject(s) - sea urchin , sperm , motility , sperm motility , mitochondrion , respiration , biology , polyphenol , microbiology and biotechnology , botany , chemistry , biochemistry , antioxidant

Mitochondria activation factor (MAF) is a high-molecular-weight polyphenol purified from black tea that activates mitochondrial respiration. It increased the mitochondrial membrane potential and motility of sea urchin sperm, by up to 8%, to the same extent as sperm-activating peptides (SAPs) secreted by the egg. Unlike SAPs, MAF had no effect on sperm swimming behavior, suggesting that the mechanism of sperm activation by MAF is different from that of SAPs.

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