J
John E. Parks
Researcher at Cornell University
Publications - 36
Citations - 2870
John E. Parks is an academic researcher from Cornell University. The author has contributed to research in topics: Sperm & Spermatogenesis. The author has an hindex of 22, co-authored 36 publications receiving 2715 citations.
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Journal ArticleDOI
Lipid composition and thermotropic phase behavior of boar, bull, stallion, and rooster sperm membranes.
John E. Parks,Daniel V. Lynch +1 more
TL;DR: A difference in both composition and thermotropic phase behavior of glycolipids between rooster and mammalian sperm is demonstrated which may be related to the greater tolerance of rooster sperm to rapid cooling.
Journal ArticleDOI
Effects of cryopreservation procedures on sperm membranes
John E. Parks,James K. Graham +1 more
TL;DR: In this paper, the complexity of the sperm plasma membrane and the many steps in a cryopreservation procedure where membrane perturbations can occur are described, and an attempt has been made to describe the complexities of the SPM and its interaction with its components.
Journal ArticleDOI
Effects of cooling and rewarming on the meiotic spindle and chromosomes of in vitro-matured bovine oocytes
Rebecca R. Aman,John E. Parks +1 more
TL;DR: Spindles did not return to normal in most oocytes regardless of cooling temperature or rewarming scheme, and step-wise rewarming was no more beneficial than direct rewarming.
Journal ArticleDOI
Factors affecting low temperature survival of mammalian oocytes
John E. Parks,Nancy A. Ruffing +1 more
TL;DR: The ability to cryopreserve mammalian oocytes effectively would greatly increase their availability for a broad range of reproductive technologies, and estimates of biophysical parameters which influence the osmotic and cryobiological responses of oocytes are becoming available and may be useful for developing freezing protocols.
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Bovine oviductal fluid components and their potential role in sperm cholesterol efflux.
TL;DR: Results indicate that HDL from OF is elevated during the follicular phase of the estrous cycle and can serve as an acceptor for bovine sperm cholesterol.