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ADPase activity in human maternal and cord blood: possible evidence for a placenta‐specific vascular protective mechanism
Author(s) -
Barradas M.A.,
Mikhailidis D.P.,
Dandona P.
Publication year - 1990
Publication title -
international journal of gynecology and obstetrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.895
H-Index - 97
eISSN - 1879-3479
pISSN - 0020-7292
DOI - 10.1016/0020-7292(90)90175-k
Subject(s) - placenta , cord blood , medicine , fetal circulation , fetus , cord , post partum , placental circulation , enzyme , pregnancy , incubation , andrology , endocrinology , biochemistry , biology , surgery , genetics
ADPase enzyme activity was assessed in maternal and cord plasma by adding radio‐labelled ADP and quantitating the degradation products. Cord plasma had sufficiently greater ADPase activity than the corresponding maternal plasma obtained ante‐ and post‐partum. Thus, residual radiolabelled ADP was 30, 32 and 17% of total radioactivity after 30 min incubation (37°C) in maternal ante‐partum, maternal post‐partum and cord plasmas, respectively. ADPase may act as a platelet aggregation inhibitor in the placental and fetal circulation.