Roentgen Studies of the Mechanism Involved in Sperm Transportation in the Female Rabbit

Krehbiel, Robert H.; Carstens, Herman P.

doi:10.1152/ajplegacy.1939.125.3.571

Cited by 36 publications

(13 citation statements)

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“…Assessments reported by the previous authors together ,vith those reported in the present studies indicate that the number of spermatozoa in the cervix increases until at least 15 min after coitus. Vaginal contractions such as have been demonstrated to effect passage of radio-opaque oil from the vagina to the uterus of the rabbit doe (Krehbiel and Carstens 1939;Al{ester and Inkster 1961), are likely, therefore, to be an important aid in the passage of semen, or a mixture of semen and mucus, into the cervix of the ewe.…”

Section: Discussionmentioning

confidence: 99%

Spermatozoa in the Genital Tract of the Ewe II. Distribution After Coitus

Mattner¹

1963

Aust. Jnl. Of Bio. Sci.

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SummaryObservations were made on the distribution of spermatozoa in the genital tract of the ewe at 15 min, and at 4, 24, and 48 hr after coitus. A total of 60 animals was used. The number of spermatozoa in t,he cervix wa.s highest at 15 min and in the uterus the maximum number was recorded at 24 hr. Stress decreased the number of spermatozoa present in the fallopian tubes at 15 min after coitus but did not influence the transport of spermatozoa into the cervix, the distribution of spermatozoa within the genital tract at 4, 24, and 48 hI', the number of spermatozoa on the zona pellucida of recovered eggs, or the proportion of eggs fertilized.Results indica.te that slow passage of spermatozoa. from the cervix to the fallopian tube of the ewo may eontinue for many hours inespective of the occurrence or failure of rapid transport.

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Section: Discussionmentioning

confidence: 99%

Spermatozoa in the Genital Tract of the Ewe II. Distribution After Coitus

Mattner¹

1963

Aust. Jnl. Of Bio. Sci.

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“…Evidence that it may play some role immediately after service has been provided by Krebhiel & Carstens (1939) and Akester & Inkster (1961), who demonstrated that minute jets of radio-opaque fluid passed through the cervices of the rabbit doe during vaginal contractions. Although Noyes, Adams & Walton (1958) and Edgar & Asdell (1960) were unable to confirm this, they reported that radio-opaque media appeared to be forced against the cervix by vaginal contractions.…”

Section: Recovery Of Spermatozoamentioning

confidence: 99%

Numbers of Spermatozoa in the Genital Tract After Artificial Insemination of Progestagen-Treated Ewes

Quinlivan¹,

Robinson²

1969

Reproduction

133

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Summary. An experiment is described in which spermatozoa were recovered from genital tracts of ewes either at the first oestrus following progestagen synchronization or at a normal oestrus.Recoveries 1, 12, 24, 36 and 48 hr after the insemination of 500\m=x\106 spermatozoa show that synchronization with intravaginal sponges impregnated with the synthetic progestagen 17\g=a\-acetoxy-9\g=a\-fl uoro-11\g=b\\x=req-\ hydroxypregn-4-ene-3,20-dione (Cronolone, Searle) alters the numbers and distribution of spermatozoa throughout the female genital tract at the first oestrus after treatment.One hour after insemination the total numbers of spermatozoa recovered, and their distribution between the various regions of the tract, differed little between progestagen-treated and untreated ewes. Thereafter the numbers recovered from treated ewes were significantly fewer than from untreated, and their distribution differed. Significant differences appeared in the vagina at 12 hr and in the cervix and uterus at 24 hr and thereafter this difference was maintained. The pattern in the Fallopian tubes followed that of the uterus. At 24 hr the mean numbers of tubal spermatozoa recovered were: synchronized\p=m-\900; non-synchronized\p=m-\8200(P< 0\m=.\001).Both transport and survival of spermatozoa may be deleteriously affected in the reproductive tract of the progestagen-treated ewe.

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“…Three lines of evidence suggest that spermatozoa are actively transported through the uterus by muscular contractions: (a) spermatozoa arrive at the oviducts too quickly (Hartman & Ball, 1931;VanDemark & Moeller, 1951;Settlage et al, 1973) for their intrinsic motility to have brought them there (Harvey, 1960); (b) inert materials placed in the caudal uterus are quickly transported to the oviducts (Amerbach, 1930;Krehbiel & Carstens, 1939;Egli & Newton, 1961); and (c) direct observation has revealed that uterine contractions move spermatozoa (or dye) up and down the uterine horns of rats (Rossman, 1938;Genell, 1939). 'Reprint requests Mating may facilitate sperm transport via its effect on uterine contractions.…”

Section: Introductionmentioning

confidence: 99%