Amniotic fluid embolism with survival.

Well-documented amniotic fluid embolism with survival is an uncommon occurrence. A case is reported with characteristic clinical findings in addition to electrocardiographic evidence of acute right heart strain, disseminated intravascular coagulation, and amniotic fluid debris in central venous blood. The impact of this complication on maternal mortality is emphasized.

Foamy changes of placental cells in fetal storage disorders.

Vacuolar cytoplasm in placental cells was observed in four cases. In each instance the baby was either stillborn or died soon after birth. One infant was shown to have Inclusion cell disease (Mucolipidosis II), whereas in the other cases biochemical studies were noncontributory or could not be carried out.

Studies on a male eland X kudu hybrid.

An accidental mating between a male eland and a female kudu produced an animal with primarily eland phenotypic characteristics. Despite pronounced male behaviour the animal was azoospermic. Histological examination of the testis showed complete lack of germ cells.

Chromosomes of the tan-handed titi (Callicebus torquatus, Hoffmannsegg, 1807).

Two new specimens of Calicebus torquatus confirm the previously reported unusually low diploid number of 2n = 20. Banding studies and radioautography identify the X chromosome and compare the karyotype with that of Callicebus moloch cupreus. The latter species has considerably less C-banded heterochromatin.

Gonadal dysgenesis in the mare.

Five phenotypically normal but infertile mares were studied; four had karyotypes of 63XO, and one was a 25,64XX/13,63XO mosaic. The mares exhibited small uteri and has small ovaries that lacked germ cells and consisted primarily of undifferentiated ovarian stroma. These cases demonstrate that chromosome analysis is an important technique for the diagnosis of some forms of equine infertility.

Prenatal diagnosis of trisomy 9.

A male karyotype with trisomy 9 (47,XY,+9) was identified in amniotic fluid cells from a 40-year-old pregnant woman. After termination of the pregnancy by saline abortion, the cytogenetic diagnosis was confirmed in a cell line grown from placental tissue. Microscopic and gross pathological findings in the fetus were compared to 1 case with trisomy 9 and 3 with trisomy 9 mosaicism reported in the literature.

Mosaicism and lack of fluorescence of Y chromosome.

A patient with a female phenotype with XO/XY and possibly XYY mosaicism is presented. In all cells studied, there was no fluorescence of the Y chromosome. It appears that a tendency exists for an association of a defective Y chromosome with chromosomal mosaicism.

An animal model for the XXY Klinefelter's syndrome in man: tortoiseshell and calico male cats.

A review of the chromosome findings in 25 male tortoiseshell or calico (T-C) cats showed a variety of aneuploidy, polyploidy, mosaicism, and chimerism. An XXY-complement was included in the chromosome makeup of 16 of the 25 cats. Almost all of these cats were sterile.

The effects of dexamethasone on the peripheral plasma concentrations of androstenedione, testosterone and cortisol in the pregnant rhesus monkey.

The concentrations of androstenedione, testosterone and cortisol have been measured in the maternal peripheral plasma of normal pregnant rhesus monkeys (Macaca mulatta), and in rhesus monkeys treated daily with dexamethasone during late pregnancy. During the last 30 days of pregnancy, the mean plasma concentrations of androstenedione, testosterone and cortisol were about 1400-2000 pg/m1375-425pg/ml and 300-400 ng/ml, respectively. None of these steroids increased significantly before parturition.

A ten year study of ovarian tumors.

A study of 213 ovarian tumors was undertaken with respect to the published assumption that there may be a relationship between presence of crystals of silicate in the ovarian tissue and neoplastic transformation. The histological review gave the opportunity to classify these tumors according to the recommendations of the World Health Organization. The frequency of histological types, age distribution and the site of involvement were determined.