The role of mitochondria in energy production for human sperm motility

P. Piomboni; R. Focarelli; A. Stendardi; A. Ferramosca; V. Zara

doi:10.1111/j.1365-2605.2011.01218.x

journal article Sep 27, 2011

The role of mitochondria in energy production for human sperm motility

P. Piomboni R. Focarelli A. Stendardi A. Ferramosca V. Zara

International Journal of Andrology Vol. 35 No. 2 pp. 109-124 · Wiley

View at Publisher Save 10.1111/j.1365-2605.2011.01218.x

Abstract

SummaryMitochondria of spermatozoa are different from the corresponding organelles of somatic cells, in both their morphology and biochemistry. The biochemical differences are essentially related to the existence of specific enzyme isoforms, which are characterized by peculiar kinetic and regulatory properties. As mitochondrial energy metabolism is a key factor supporting several sperm functions, these organelles host critical metabolic pathways during germ cell development and fertilization. Furthermore, spermatozoa can use different substrates, and therefore activate different metabolic pathways, depending on the available substrates and the physico‐chemical conditions in which they operate. This versatility is critical to ensure fertilization success. However, the most valuable aspect of mitochondria function in all types of cells is the production of chemical energy in the form of ATP which can be used, in the case of spermatozoa, for sustaining sperm motility. The latter, on the other hand, represents one of the major determinants of male fertility. Accordingly, the presence of structural and functional alterations in mitochondria from asthenozoospermic subjects confirms the important role played by these organelles in energy maintenance of sperm motility. The present study gives an overview of the current knowledge on the energy‐producing metabolic pathways operating inside human sperm mitochondria and critically analyse the differences with respect to somatic mitochondria. Such a comparison has also been carried out between the functional characteristics of human sperm mitochondria and those of other mammalian species. A deeper understanding of mitochondrial energy metabolism could open up new avenues of investigation in bioenergetics of human sperm mitochondria, both in physiological and pathological conditions.

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Published: Sep 27, 2011
Vol/Issue: 35(2)
Pages: 109-124
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Cite This Article

P. Piomboni, R. Focarelli, A. Stendardi, et al. (2011). The role of mitochondria in energy production for human sperm motility. International Journal of Andrology, 35(2), 109-124. https://doi.org/10.1111/j.1365-2605.2011.01218.x

The role of mitochondria in energy production for human sperm motility

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