l-carnitine sperm Evaluation of Potential in Improvement of Male Fertility l-carnitine and l-acetylcarnitine supplementation for

The upregulated urea cycle removes -amyloid and ammonia on one hand, while on the other, overproduction of the urea cycle metabolite ornithine leads to the overexpression of the enzyme ornithine decarboxylase 1 (ODC1), which produces excessive putrescine that subsequently degrades into GABA, H 2 O 2 and ammonium (see previous section)

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Annu Rev Pharmacol Toxicol 46:215234 Drevet JR (2006) The antioxidant glutathione peroxidase family and spermatozoa: a complex story

10.1016/j.mehy.2015.09.018 125 Van SpaendonkH.CeuleersH.WittersL.PatteetE.JoossensJ.AugustynsK.et al (2017)