4.5 Article

Detection of heat-stable antibacterial activity in cotyledonary and discoid placentas

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PLACENTA
卷 142, 期 -, 页码 95-97

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W B SAUNDERS CO LTD
DOI: 10.1016/j.placenta.2023.08.073

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Placenta; Antibacterial; Innate immunity; Natural antimicrobials

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This study separated and analyzed the maternal and fetal portions of two different types of mammalian placentas using a culture-independent method to measure antibacterial activity. The results showed that both maternal and fetal portions of all placenta types tested exhibited antibacterial activity. Further investigations suggested that the factor responsible for this activity was activated upon release from a larger molecule. Identifying and understanding the activation mechanism of this factor will contribute to a better understanding of the innate immune function provided by the placenta.
The placenta serves in immunological defense of the fetus, providing proteins essential for innate immunity. Maternal and fetal portions of two mammalian placenta types, discoid, and cotyledonary, were separated and analyzed for antibacterial activity using a culture-independent method. Antibacterial activity was detected in both maternal and fetal portions of all placenta types tested. Protease resistance and increased activity after boiling suggests that the factor is activated upon release from a larger molecule. Identification of this factor and the mechanism of activation will lead to a better understanding of the innate immune function provided by the placenta.

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