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Related Experiment Videos

Mammotrophic activity in rat amniotic fluid.

J M Peters

    Acta Endocrinologica
    |February 1, 1977
    PubMed
    Summary
    This summary is machine-generated.

    Rat amniotic fluid contains mammotrophic activity, crucial for mammary gland development. This activity mirrors human placental lactogen effects, suggesting a role in pregnancy.

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    Area of Science:

    • Reproductive biology
    • Endocrinology
    • Developmental biology

    Background:

    • Mammotrophic activity is essential for mammary gland development during pregnancy.
    • The roles of amniotic fluid components in fetal development are not fully understood.
    • Hormonal regulation of mammary gland growth is a key area in reproductive science.

    Purpose of the Study:

    • To investigate the presence and characteristics of mammotrophic activity in rat amniotic fluid during pregnancy.
    • To compare the mammotrophic activity in amniotic fluid with maternal serum.
    • To assess the in vitro effects of amniotic fluid on rat mammary glands.

    Main Methods:

    • Collection of rat amniotic fluid at different gestational days (13, 15, 19).
    • Measurement of mammotrophic activity in amniotic fluid and maternal serum.

    Related Experiment Videos

  • In vitro assays using rat mammary gland explants exposed to amniotic fluid.
  • Quantification of prolactin concentration in amniotic fluid.

    • Main Results:

    • Mammotrophic activity was detected in rat amniotic fluid on days 13, 15, and 19 of gestation.
    • Amniotic fluid mammotrophic activity was comparable to maternal serum on day 15 but lower on day 19.
    • Amniotic fluid demonstrated effects on rat mammary glands in vitro, similar to human placental lactogen.
    • Prolactin levels in amniotic fluid were found to be low, around 1 ng/ml.

    Conclusions:

    • Rat amniotic fluid possesses significant mammotrophic activity during pregnancy.
    • This activity plays a role in mammary gland development, potentially mediated by factors similar to human placental lactogen.
    • The findings contribute to understanding the hormonal milieu supporting fetal mammary gland development.