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This process is known as the electron transport chain

Saez J, Lejeune H: Regulation of Leydig cell function by hormones and growth factors other than LH and IGF-I

Glutathione and glutathione-dependent enzymes: From biochemistry to gerontology and successful ageing

It may help lighten post-inflammatory hyperpigmentation, providing a smoother, clearer complexion

Likewise, restraint stress rapidly modulated KP enzyme expression in rats, with amygdala IDO increasing within 1 h, amygdala KMO and kynureninase rising by 4 h, hippocampal TDO decreasing within 4 h, hypothalamic TDO upregulated at 4 h, and medial prefrontal cortex kynureninase reduced shortly after stress with effects lasting at least 24 h [70]

1 2 Annual Review of Biochemistry