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Biomedical subjects

D Tater

Publications and source records attributed to D Tater.

23 records · Page 2Linked to original sources
PubMed1981

Leydig cell tumor with gynecomastia: hormonal effects of an estrogen-producing tumor.

A patient with a testicular interstitial cell tumor and gynecomastia is reported. The testicular tumor was capable of aromatizing 8.3% testosterone. Spermatic venous samples taken from the tumor-bearing side had marked elevations of 17 beta-estradiol (E2), progesterone, and 17-hydroxyprogesterone (170 HP). The progesterone to 17OHP and 17OHP to androstene-dione ratios suggested an enzymatic block of 17 alpha-hydroxylase and 17-20 lyase possibly secondary to locally produced E2. The E2 produced by the tumor appeared to suppress gonadotropin secretion. The plasma testosterone and gonadotropin levels rose within 7 days after the removal of tumor, and the gynecomastia began to decrease.

Adult↗
PubMedDate not supplied

Circulating immune complexes containing bovine insulin in a patient with systemic allergic manifestations.

A woman treated for 15 days with bovine insulin for gestational diabetes presented with severe urticaria of the chest and back, distant from the injection site. She had neither local reaction nor general manifestations. Replacement of bovine NPH insulin by biosynthetic human NPH was followed by regression of urticaria. We isolated the circulating immune complex (CIC), mainly of IgG class, from the patient's serum. It disappeared when bovine insulin administration had been ceased for 48 h. There were no specific IgE-insulin-antibodies. The IgG-CIC were dissociated. Insulin was identified by RIA in the CIC. Insulin characterization was carried out by high-performance liquid chromatography (HPLC), which showed that the insulin in the complexes was injected bovine insulin.

Adult↗
PubMedDate not supplied

[Hormonal profile and HLA typing of adult subjects from 7 families with congenital adrenal hyperplasia caused by 21-hydroxylase deficiency].

Most members of seven families in whom one subject was known to have congenital adrenal hyperplasia due to 21-hydroxylase deficiency were haplotyped for HLA B antigen which was supposed to be linked to the defective gene. Heterozygous males (group 1, n = 9), and females (group 3, n = 8) were recognized. These had no clinical abnormalities. All heterozygotes, as well as eight normal males (group 2) and ten normal females (group 4) received in IM injection of Synacthen. Plasma samples obtained before (PRE) and three hours after (POST) the injection was assayed for cortisol, testosterone, androstenedione, 17-hydroxyprogesterone, and dehydroepiandrosterone. All steroids increased significantly after ACTH except for testosterone. The ratio cortisol/17-OHP (F/17-OHP) decreased in group 1. POST 17-OHP (ng/ml) (x +/- SEM) was higher and F/17-OHP lower in groups 1 and 3 respectively: (5.83 +/- 1.83, 60 +/- 20; 4.53 +/- 1.13, 81 +/- 34) than in groups 2 and 4: (1.95 +/- 0.72, 196 +/- 67; 1.94 +/- 0.65, 269 +/- 167). POST F levels were not different among groups. When the distributions were standardized, individual POST 17-OHP levels of heterozygotes were different from the mean POST 17-OHP of the respective normal group and vice versa. The two normal males from the affected families could also be separated from heterozygous but not from normal males.

17-alpha-Hydroxyprogesterone↗