PLASMA PROGESTERONE LEVELS IN GUINEA-PIGS ACTIVELY IMMUNIZED AGAINST PROSTAGLANDIN F, HYSTERECTOMIZED OR TREATED WITH INTRA-UTERINE INDOMETHACIN

in Journal of Endocrinology
Authors:
N. L. POYSER
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E. W. HORTON
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SUMMARY

Five guinea-pigs actively immunized against a prostaglandin F(PGF)–bovine serum albumin conjugate showed elongated oestrous cycles. During these, corpora lutea were maintained in a functional secretory state as indicated by plasma progesterone levels. The results are compatible with the view that the PGF antibodies neutralized the PGF released from the uterus and thus prevented its normal luteolytic effect. Similar patterns of progesterone secretion were observed in two hysterectomized animals and in two animals with intra-uterine implants of indomethacin.

 

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