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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Secretion and metabolism of prostaglandin F2 alpha by endometrial tissue obtained at different days of the oestrous cycle in cattle.

Two mature heifers were slaughtered on days 3, 6-7, 10-11, 16, 18-19 or on day 21 of the oesterus cycle. Endometrium was incubated in quadruplicates with medium-199 at 37 C and a water saturated gas phase of 95% O2 + 5% CO2. Half ml medium samples were taken after 6, 12 and 24 h of incubation for determination of PGF2 alpha and PGFM. PGF2 alpha was secreted by endometrium at each stage of the oestrous cycle. Maximal secretion was measured around oestrus (p less than 0.01) compared with days 6-16 of the cycle. Concentration of PGFM in medium had a similar trend. Highest ability of endometrium for PGF2 alpha metabolism (indicated by the ratio PGF2 alpha:PGFM) was on days 6-16 of the cycle. Data suggest that PGF2 alpha metabolism by the endometrium may depend on ovarian steroids and that this metabolism may also protect the corpus luteum from the luteolytic action of PGF2 alpha besides reduced production of this prostaglandin during the luteal phase.[1]

References

  1. Secretion and metabolism of prostaglandin F2 alpha by endometrial tissue obtained at different days of the oestrous cycle in cattle. Kotwica, J., Schams, D., Meyer, H.H. Acta physiologica Polonica. (1988) [Pubmed]
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