Decidua: a possible source of amniotic fluid prolactin

Area of Science:

• Reproductive biology
• Endocrinology
• Maternal-fetal medicine

Background:

• Amniotic fluid prolactin plays a role in fetal development and amniotic fluid homeostasis.
• The precise origin of amniotic fluid prolactin in human pregnancy has remained unclear.

Purpose of the Study:

• To investigate the source of prolactin within the amniotic fluid during human pregnancy.
• To determine if maternal tissues contribute significantly to amniotic fluid prolactin levels.

Main Methods:

• Analysis of prolactin content in human term pregnancy tissues: amnion, chorion, placenta, and decidua.
• Incubation studies of decidual tissue to assess prolactin release under varying oxygen and protein conditions.

Main Results:

• Decidual tissue demonstrated significant quantities of prolactin compared to other examined tissues.
• Decidual prolactin release during incubation was influenced by oxygen and protein presence.
• The amount of prolactin released from decidua exceeded the decrease in tissue prolactin content.

Conclusions:

• Decidua is identified as a primary source of amniotic fluid prolactin in term human pregnancy.
• Prolactin synthesis occurs during the incubation of decidual tissue.
• Sufficient prolactin exists within the decidua to account for observed levels in amniotic fluid at term.