|Embryology - 18 Jan 2018 Expand to Translate|
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Sea Urchin Spermatozoa Chemotaxis
Chemotaxis is the attractive movement of an organism in response to a chemical stimulus, usually toward or "up" the chemical concentration gradient. Spermatozoa of other species respond to different chemical attractants. In human fertilization, this is probably progesterone released by glomerulosa cells surrounding and bound to the oocyte zona pellucida.
Kaubb's 2012 experiment (on the left) shows the release of resact with a UV flash induces accumulation of sperm in the illuminated area while an annulus around the flash becomes depleted of sperm. After several seconds, the gradient dissipates because of resact binding and diffusion. (text from figure legend)
- U B Kaupp 100 years of sperm chemotaxis. J. Gen. Physiol.: 2012, 140(6);583-6 PubMed 23183693 | J Gen Physiol.
- F R Lillie THE PRODUCTION OF SPERM ISO-AGGLUTININS BY OVA. Science: 1912, 36(929);527-30 PubMed 17735765
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Cite this page: Hill, M.A. 2018 Embryology Spermatozoa Chemotaxis. Retrieved January 18, 2018, from https://embryology.med.unsw.edu.au/embryology/index.php/Spermatozoa_Chemotaxis
- © Dr Mark Hill 2018, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G