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PubMed1975

Estriol prevention of mammary carcinoma induced by 7,12-dimethylbenzanthracene and procarbazine.

The concentration of estrogenic, androgenic, progestational, and adrenocortical steroid hormones in body fluids of mature intact Sprague-Dawley female rats was increased by s.c. implantation of 5 to 7 mg NaCl pellets containing 1 to 20% steroid 48 hr before administration p.o. of either 7,12-dimethylbenz(a) anthracene or procarbazine. The incidence of rats developing one or more mammary carcinomas in each treated group was compared to that ovserved in simultaneously treated groups receiving only the carcinogen, steroid, or no treatment whatsoever, with weekly observation of all rats until palpably growing tumors were biopsied and proven carcinomatous or until death occurred from other causes determined by autopsy. A total of 105 untreated or steroid-implanted rats followed to death (234 to 256 days median observation) developed no breast carcinomas. Rats fed either of the carcinogens developed initial evidence of breast carcinoma, after 136 to 156 days median observation, in 51 to 57% of 318 total treated rats. Nonbreast carcinomas and sarcomas developed in 5 to 10% of the carcinogen-treated rats.

Animals↗
PubMed1992

[Significance of the maternal levels of serum alpha-fetoprotein, human chorionic gonadotropin and unconjugated estriol in various congenital developmental defects in pregnancy trimester II].

Maternal serum alpha-fetoprotein (MSAFP), human chorionic gonadotropin (hCG) and unconjugated oestriol (uE3) concentrations were measured in maternal serum samples from 21 pregnancies with neural-tube defects, 4 pregnancies with ventral wall defects (VWD) and 1662 unaffected pregnancies in women. These congenital malformations were confirmed by ultrasound scanning. The mean multiplate of the median (MoM) for AFP and uE3 was significantly different from the control values in cases of open NTD (AFP median MoM = 5.95, p < 0.001, uE3 median MoM = 0.2, p < 0.001), while hCG values did not differ from those of matched controls (hCG median MoM = 0.9). The biological basis of altered levels of uE3 in pregnancies with fetal NTDs is unclear.

Congenital Abnormalities↗
PubMed1992

[Evaluation of usefulness of enzymatically determining estriol in urine and placental lactogen in serum of pregnant women with threatened preterm labor].

In 40 pregnant women in the pregnancy period from 16 to 28 weeks with threatened preterm labor diagnosed after clinical investigations and recording of cardiotocogram the values of oestriol in 24-hour urine and placental lactogen in the serum was measured. These values were compared to analogous determinations in a group 40 healthy women with similar duration of pregnancy. Statistically significantly lower values of placental lactogen were found in the serum of pregnant women with threatened preterm labor. The values of oestriol in 24-hour urine were also lower, but the differences were not statistically significant. In conclusion the authors state that enzymatically determined placental lactogen in the serum is a useful method of monitoring of pregnancy with threatened preterm labor. Determination of oestriol was without any greater diagnostic significance in the case of threatened preterm labor.

Adult↗
PubMed1992

[Evaluation of the usefulness of enzymatic determination of estriol in urine and placental lactogen in serum of pregnant women with threatened preterm labor].

The authors studied 60 pregnant women in the pregnancy period from 29-37 weeks with threatened preterm labor. The control group formed 40 healthy pregnant women in the same pregnancy period. In all pregnant women the values of oestriol in 24-hour urine and placental lactogen in the serum was measured. Statistically significantly lower values of placental lactogen were found in the serum of pregnant women with threatened preterm labor. The values of oestriol in 24-hour urine were also lower, but the differences were not statistically significant. In 40 pregnant women in the pregnancy period from 16 to 28 weeks with threatened in the serum is a useful method of monitoring of pregnancy with threatened preterm labor. Determination of oestriol was without any greater diagnostic significance in the case threatened preterm labor.

Adult↗