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Biomedical subjects

V Davajan

Publications and source records attributed to V Davajan.

At least 37 records · Page 2Linked to original sources
PubMed1977

Mechanism of crystallization of purified human midcycle cervical mucus.

The crystallization phenomenon of human midcycle cervical mucus was studied with purified mucin and sodium chloride. The drying of the purified mucin in saline was subjected to stress by the use of an air curtain, and crystallization (fern pattern) was found to follow the stress. Lithium chloride and calcium chloride were not compatible with the mucin for the formation of fernlike crystals. When a dilute solution of mucin dissolved in saline was dried, a radial crystallization pattern was observed to emanate from a single crystal in the center. Upon closer examination, the pattern was observed to emanate from the corners of the crystal.

Calcium Chloride↗
PubMed1977

Clinical response to CB-154 and the pituitary response to thyrotropin-releasing hormone-gonadotropin-releasing hormone in patients with galactorrhea-amenorrhea.

Ten patients with galactorrhea and amenorrhea were treated with 2-bromo-alpha-ergocryptine (CB-154). All patients had normal anteroposterior and lateral x-rays of the sella turcica and normal or low gonadotropin levels. Before treatment, serum prolactin (PRL) levels were between 80 and 1575 ng/ml. Prior to initiating therapy, six patients were further evaluated by the intravenous administration of thyrotropin-releasing of a pituitary etiology in all patients. During treatment, PRL levels were measured at monthly intervals. After 1 month, serum PRL concentrations were reduced between 13% and 99%. In eight subjects there was complete cessation of galactorrhea. During treatment, nine patients resumed ovulatory menstrual cycles and three patients conceived. After discontinuing therapy, five of seven subjects had a recurrence of galactorrhea, amenorrhea, and hyperprolactinemia.

Adult↗
PubMed1977

The cervical factor in infertility: diagnosis and treatment.

One hundred and fourteen women with an abnormal fractional postcoital test (PCT) and no other demonstrable cause of female infertility were included in this study. By utilizing the results of the postcoital test, it was possible to divide the patients into three major groups: (1) those with anatomical cervical defect, (2) those with abnormal cervical mucus, and (3) those with an abnormal PCT and normal cervical mucus. In the latter group the abnormality was due to either an abnormal male factor or an undetermined factor. The treatment used in all cases was either steroidal (diethylstibestrol) or mechanical (cervical cup insemination). In 53 of the patients there was an improvement in the PCT as a direct result of therapy. Twenty-three of these patients became pregnant--a pregnancy rate of 43%. Of the entire group of 110 patients (excluding 4 patients whose husbands had azoospermia), only 21% became pregnant. Of the 57 patients who failed to respond to therapy, 41 have been followed for 1 year, and only 2 pregnancies have been noted without therapy. No correlation was found between an abnormal PCT and the immunologic factor.

Cervix Mucus↗
PubMed1977

Unilateral twin interstitial ectopic pregnancy. Report of a case.

An unusual case of twin unilateral interstitial pregnancy is described. On admission the patient was thought to have an intrauterine pregnancy of 14 weeks' gestation. Because of an irregularity in the right cornual region of the uterus, a culdocentesis was performed which returned unclotted blood. Because of this finding the patient underwent laparoscopy which revealed an unruptured right cornual pregnancy. An early diagnosis before rupture allowed for conservative surgical management and uterine conservation.

Female↗
PubMed1976

Male pseudohermaphroditism consistent with 17,20-desmolase deficiency.

A 16-year-old phenotypic female with XY genotype presented an unusual form of nonfamilial male pseudohermaphroditism. Seemingly a normal girl during childhood, the patient failed to undergo pubertal changes presenting with scant pubic hair, absent axillary hair, lack of breast development, retarded bone age and primary amenorrhea. Neither uterus nor adnexa were palpable above the blind-ending vagina. Serum testosterone and estradiol were barely detectable by radioimmunoassay, while LH and FSH reached castrate levels. Two small testes were removed from the pelvic sidewalls which, on biopsy, showed atrophy and hyalinization of seminiferous tubules, but clusters of Leydig cells without signs of hypertrophy or hyperplasia. Administration of testosterone resulted in urinary nitrogen retention and a decrease in serum LH and FSH. Radioimmunoassay of various serum or plasma steroids and gas chromatographic determination of urinary steroids prior to and following ACTH stimulation yielded results which permitted to rule out 20,22-desmolase, 3beta-hydroxysteroid dehydrogenase, 17-hydroxylase and 17beta-hydroxysteroid dehydrogenase deficiency. Low plasma dehydroepiandrosterone sulfate (DHEA-S) and androstenedione (delta4 A) concentrations, low urinary 17-ketosteroid and particularly low dehydroepiandrosterone (DHEA) excretion and the minimal rise of plasma DHEA-S and delta4 A and of urinary DHEA in response to ACTH in conjunction with a normal response of other serum and urinary C-21 steroids are consistent with 17,20-desmolase deficiency. Direct confirmation of this defect, however, seems impossible in the absence of in vitro studies of testicular steroidogenesis.

17-Ketosteroids↗
PubMed1975

Clinical categorization of patients with secondary amenorrhea using progesterone-induced uterine bleeding and measurement of serum gonadotropin levels.

A group of ninety unselected women with secondary amenorrhea of at least six months' duration were studied retrospectively. By the use of intramuscular progesterone in oil, it was possible to categorize these patients according to their positive or negative uterine bleeding response. LH, FSH, and estradiol values in the 63 patients of the positive category had a log-normal distribution. LH values were found to be composed of two different populations; FSH and estradiol values were composed of only one population. Based on these LH determinations the entire positive category was then divided into two groups. Patients with high levels of LH (Group I) were clinically diagnosed to have polycystic ovarian disease. Patients with normal levels of LH (Group II) were diagnosed to have hypothalamic-pituitary dysfunction. The 27 patients who failed to have withdrawal uterine bleeding were placed in the negative category. These patients also were shown to have a log-normal distribution for LH, FSH, and estradiol. In contrast to the patients in the positive category, FSH values in these patients were made up of two different populations whereas LH and estradiol values showed only one population. Based on the FSH values these patients were divided into two groups, one with low and normal levels of FSH (Group III) and the second population with high levels of FSH designated as Group IV. Group III represented those patients with hypothalamic-pituitary failure and patients in Group IV were those with ovarian failure. Serial determinations of LH, FSH, and estradiol done prospectively on five consecutive days in 19 of the 90 patients did not give any further information in differentiating among the four groups.

Adult↗
PubMed1975

Classification of secondary amenorrhea based on distinct hormonal patterns.

Patients with secondary amenorrhea have been classified into 4 clincal groups. In order to further investigate these 4 groups, LH, FSH, and estradiol (E2) were measured at 15 min intervals for 4 h in 21 patients with secondary amenorrhea. Patients within each group had similar hormonal patterns, but there was a distinct variation among the groups. Three patients in group 1 (polycystic ovaries [PCO]) had elevated basal levels of only LH with marked irregular fluctuations. Seven patients in group II (hypothalamic-pituitary dysfunction) had normal basal levels of LH, FSH, and E2. Only LH showed oscillations of varying mahnitude and frequency. Eight patients in group III (hypothalamic-pituitary failure) had low or low-normal levels of LH, FSH, and low E2 with minimal or absent fluctuations. Three patients in group IV (ovarian failure) had high basal levels of FSH and LH and irregular fluctuations. This study confirmed the rationality of separating patients with secondary amenorrhea into 4 different groups. In addition, it was found that in group III patients, the total amount of LH secreted in a 4-hour period of time appears to be insufficient to stimulate E2 production from the ovary even when a single sample was found to be in the normal range.

Adult↗