2007
DOI: 10.1016/j.theriogenology.2007.03.018
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Role of the oviduct in sperm capacitation

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Cited by 197 publications
(191 citation statements)
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References 61 publications
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“…Spermatozoa deposited by natural mating or AI in oestrous pigs reach the oviducts just a few minutes after (Hunter 1981), and basically, they should not encounter PMNs along their transit. Once they enter the sperm reservoir in the oviduct, they face a safe period prior to eventual migration to the site of fertilization (Rodriguez-Martinez, 2007). Interestingly, our own experimental in vivo studies have shown that those pig spermatozoa ejaculated in the sperm-peak portion of the SRF (the 1 st 10 mL of the SRF, the so-called P1; see Rodriguez-Martinez et al, 2009, for a review) appear overrepresented in the tubal sperm reservoir by 3 h post-AI (Wallgren et al, 2009).…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…Spermatozoa deposited by natural mating or AI in oestrous pigs reach the oviducts just a few minutes after (Hunter 1981), and basically, they should not encounter PMNs along their transit. Once they enter the sperm reservoir in the oviduct, they face a safe period prior to eventual migration to the site of fertilization (Rodriguez-Martinez, 2007). Interestingly, our own experimental in vivo studies have shown that those pig spermatozoa ejaculated in the sperm-peak portion of the SRF (the 1 st 10 mL of the SRF, the so-called P1; see Rodriguez-Martinez et al, 2009, for a review) appear overrepresented in the tubal sperm reservoir by 3 h post-AI (Wallgren et al, 2009).…”
Section: Discussionmentioning
confidence: 99%
“…Shortly after sperm deposition, a certain proportion of the spermatozoa colonize the tubal SR, whose pre-ovulatory functionality ensures their viability and potential fertilizing capacity in an inflammatory-free environment (reviewed by Rodriguez-Martinez, 2007). The other spermatozoa, the major proportion, are removed from the uterine cavity by retrograde flow (20-25% of the spermatozoa leaving within 30 min, Steverink et al, 1998), while the rest are trapped (neutrophil extracellular traps, [NETs], Alghamdi et al, 2009) and phagocytosed by invading polymorphonuclear granulocytes (PMNs), which apparently start entering the lumen ~10 min after artificial insemination (AI), peak entry by 30 min and continue to enter for the following 2-3 h (Lovell and Getty, 1968; Viring and Einarsson, 1981; Rodriguez-Martinez et al, 1990), largely exceeding the number of inseminated spermatozoa (Matthijs et al, 2003).…”
Section: Introductionmentioning
confidence: 99%
“…Rather than traveling immediately to the waiting ovum, sperm are typically held in storage in the mated female, often in specialized regions of her reproductive tract. In most mammals, for example, sperm are stored in an oviductal reservoir for a period of a few hours or days (reviewed in Suarez 2002;Rodriguez-Martinez 2007). Moreover, many insects store sperm in highly specialized storage organs, with sperm surviving for weeks (as in Drosophila; e.g., Bloch to many years (as in some social hymenopterans; Hölldobler and Wilson 1990).…”
mentioning
confidence: 99%
“…From a functional perspective, storage of sperm is often a vital component of reproduction: studies in mammals suggest that sperm storage in the oviductal reservoir helps to prevent polyspermy (reviewed in Suarez 2002) and that it may facilitate control over the process of sperm activation (Suarez 2002;Rodriguez-Martinez 2007). In insects, female sperm storage may reduce the number of potentially costly matings required for full female fecundity and allows the fertilization of hundreds or thousands of eggs from one or a few matings.…”
mentioning
confidence: 99%
“…Around the time of ovulation, hormonal signals from the ovary modulate the sperms' environment whence they release themselves from the crypts and swim up toward the coming egg. It is during this period that capacitation occurs (38)(39)(40). Once at the egg, the capacitated sperm still need to respond to final stimuli associated with the oocyte, undergo the acrosome reaction (exocytosis) induced by contact with the zona pellucida (egg coating), penetrate this coating, and fuse with the egg itself.…”
Section: The Sperm's Life From Testis To Eggmentioning
confidence: 99%