Abstract:
:The peroxisome proliferation-activated receptor gamma (PPARgamma) is mainly expressed in the adipose tissue and integrates the control of energy, lipid, and glucose homeostasis. The present study, by means of RT-PCR, Western blot, and immunofluorescence techniques, demonstrates that human sperm express the PPARgamma. The functionality of the receptor was evidenced by 15-deoxy-12,14-prostaglandin J(2) (PGJ2) and rosiglitazone (BRL) PPARgamma-agonists that were tested on capacitation, acrosome reaction, and motility. Both treatments also increase AKT phosphorylations and influence glucose and lipid metabolism in sperm. The specificity of PGJ2 and BRL effects through PPARgamma on human sperm was confirmed by an irreversible PPARgamma antagonist, GW9662. Our findings provide evidence that human sperm express a functional PPARgamma whose activation influences sperm physiology. In conclusion, the presence of PPARgamma in male gamete broadens the field of action of this nuclear receptor, bringing us to look towards sperm as an endocrine mobile unit independent of the systemic regulation.
journal_name
J Cell Physioljournal_title
Journal of cellular physiologyauthors
Aquila S,Bonofiglio D,Gentile M,Middea E,Gabriele S,Belmonte M,Catalano S,Pellegrino M,Andò Sdoi
10.1002/jcp.20807subject
Has Abstractpub_date
2006-12-01 00:00:00pages
977-86issue
3eissn
0021-9541issn
1097-4652journal_volume
209pub_type
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