title: Amniotic fluid levels of substance P.
abstract: The presence of substance P (SP) in the amniotic fluid (AF) from 88 obstetric patients was determined with a radioimmunoassay. AF was collected from each patient in EDTA-coated tubes. Cross-reactivity of anti-SP antibody with methionine, met-enkephalin, leu-enkephalin, beta-endorphin, eledoisen and physalemin was less than 1%. The SP levels during the midtrimester were not significantly lower than those of late gestation. Data on the late-gestation group were evaluated further as per the clinical problem. The only statistically significant finding was between the diabetics with fetal maturity and the non-diabetic group. This preliminary study identified the presence of SP in AF in mid and late gestation.
mesh_terms: D000653:Amniotic Fluid / Q000737:chemistry*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D011263:Pregnancy Trimester, Third; D011254:Pregnancy in Diabetics; D011863:Radioimmunoassay; D013373:Substance P / Q000032:analysis*
chemical_list: D013373:Substance P