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Biomedical subjects

M Breckwoldt

Publications and source records attributed to M Breckwoldt.

At least 163 records · Page 9Linked to original sources
PubMed1979

Cervical ripening prior to induction of labor (intracervical application of a PG E2 viscous gel).

In 38 pregnant patients at term with unfavorable cervices labor induction was initiated with PG-E2 after a preceding intracervical application of 0.1, 0.2 or 0.3 mg PG-E2 in 1 ml viscous gel. The mean Bishop score improved from 3.36 to 7.0 in an average time of 2 h 37 min. The cervical diameter increased from 14 mm to 22.7 mm. 31 patients delivered their babies spontaneously, while 7 patients were delivered by cesarean section due to cervical dystocia and delayed labor. Fetal outcome was normal in all cases, with an average Apgar score of 8.7 and an average pH-value in the umbilical artery of 7.245. The study indicates that local application of PG-E2 induces cervical dilatation, and is of particular use in patients presenting a low Bishop score. A possible local effect of PG E2 is discussed.

Dilatation and Curettage↗
PubMed1979

Circadian rhythm of free oestradiol in relation to plasma cortisol in late human pregnancy.

The present study investigates the diurnal variations of free plasma oestradiol levels in late human pregnancy. The oestradiol levels are correlated to the maternal adrenal function as reflected by the plasma levels of cortisol. According to the half life time of oestradiol, blood samples were collected at short time intervals of 30 and 60 min, respectively. Three pregnant women volunteered in the study. Free oestradiol was measured by radioimmunoassay and cortisol was quantitated by a protein binding method. All patients exhibited a circadian rhythm for free oestradiol with significantly higher values in the early morning (28.3 +/- 7.2 ng/ml) than in the afternoon and early night (21.2 +/- 3.6 ng/ml, P less than 0.001). The course of oestradiol followed in a moderate but significant correlation plasma cortisol (r = 0.34, P less than 0.001). During the period of increasing cortisol the oestradiol levels demonstrated the phenomenon of episodic secretion. The results obtained suggest that the maternal adrenals predominantly regulate the diurnal rhythm of free oestradiol in late human pregnancy.

Circadian Rhythm↗
PubMed1979

Response of plasma non-conjugated oestradiol to manipulated adrenal function by ACTH and dexamethasone.

The present study is concerned with the regulation of free plasma oestradiol in relation to maternal adrenal function during late human pregnancy. Blood was collected in 9 patients at short time intervals of 30 min from 17 h to 3 h. In order to exclude endogenous ACTH-secretion 5 patients received 12 mg dexamethasone over 48 h. Between 20 h and 2 h 0.25 mg ACTH1-24 (Synacthen) was infused into the subjects. Non-conjugated oestradiol was determined by radioimmunoassay and total plasma cortisol by protein binding method. During the application of ACTH free oestradiol increased from 21.3 +/- 5.7 to 25.5 +/- 7.1 ng/ml (P less than 0.025) in the patients without dexamethasone. The increase was moderately correlated to rising cortisol (r = 0.58, P less than 0.001). Plasma oestradiol reached its maximum level after 90 min, followed by a tendency to decline despite persisting stimulation of maternal adrenals. The patients receiving dexamethasone exhibited during ACTH-infusion a rise of oestradiol from 3.8 +/- 1.9 to 7.8 +/- 3.1 ng/ml (P less than 0.001). Increasing oestradiol was strongly correlated to plasma cortisol (r = 0.67, P less than 0.001). The phenomenon of earlier declining oestradiol levels did not occur. These results suggest that maternal adrenals predominantly regulate the formation of free oestradiol. Plasma cortisol indicating maternal precursor production balances the increase of oestradiol by suppressing foetal precursor supply.

Adrenal Glands↗
PubMed1979

Inhibition of prolactin and lactation by methylergometrine hydrogenmaleate.

Reports on the effect of methylergometrine hydrogenmaleate (MEM) on prolactin (PRL) secretion and lactation are still controversial. Therefore a prospective study was designed to follow the influence of MEM on post-partum PRL levels and milk production. MEM was given orally to 30 post-partum women from day 1 to day 7 in a daily dose of 0.6 mg. Thirty untreated women served as control. PRL plasma levels and milk yield were compared at day 1, 3 and 7. PRL levels were significantly lower in the treated group at day 7 (P less than 0.01), while the difference at day 3 was statistically not significant. Milk yield was significantly reduced at day 3 (P less than 0.05) and day 7 (P less than 0.01). These results indicate PRL inhibiting properties of MEM resulting consequently in reduced lactation.

Depression, Chemical↗
PubMed1979

Correlation of plasma non-conjugated oestriol and plasma cortisol in late human pregnancy.

The present study concerns the diurnal variations of free plasma oestriol and their relationship to maternal plasma cortisol in late human pregnancy. Four pregnant women volunteered for the study. According to the half-life time of oestriol blood was drawn at intervals of 30 and 60 minutes, respectively, over a period of 24 hours. Free oestriol was measured by radioimmunoassay and cortisol was quantitated by a protein binding method. All patients exhibited a circadian rhythm for free oestriol with higher values in the evening and early night (14.4 +/- 3.7 ng/ml) than in the morning (11.3 +/- 2.3 ng/ml, P less than 0.001). The course of oestriol followed plasma cortisol in a significant negative correlation (r = -0.566, P less than 0.001). During the period of low cortisol concentration oestriol levels demonstrated the phenomenon of episodic secretion. The results suggest that the maternal adrenals predominantly regulate the circadian rhythm of free oestriol by a negative feed-back action on the foetal hypothalamus.

Circadian Rhythm↗
PubMed1979

[Are Hegar's rods omissible? (author's transl)].

The widening effect of Sulproston 500 microgram IM on the cervix uteri was investigated in a double-blind study conducted in 50 non-pregnant volunteers. In women in the postmenopausal stage who had been given Sulproston, resistance-free widening of the cervix with Hegar's rods was H 8.33 +/- 0.87. Easy passage of the cervix uteri and of the internal os uteri was achieved with Hegar 8.22 +/- 0.66 in the first half of the cycle and with Hegar 8.35 +/- 3.06 in the second half of the cycle. In all three groups, the size of the rods was significantly smaller following intramuscular application of physiological saline solution. The widening effect of PGE2 or PGE2 derivatives on the cervix, which has been known for quite some time in patients with pregnant uterus, applies in equal measure to the non-pregnant cyclic uterus and to the postmenopausal uterus.

Cervix Uteri↗
PubMed1979

[Relation between endometritis post abortum and oestrogen levels in the plasma (author's transl)].

In 13 patients with abortion in the second to fourth months of pregnancy the variation in oestrogen levels in the plasma was determined before and after abrasion of the abortus, using the radioimmunoassay method, and correlated with the results of histological examination of the abraded parts. Seven women without endometritis revealed high oestrogen concentrations before and after the abrasion (mean (1734 pg/ml or 397 pg/ml, respectively). On the fifth day after abrasion the levels corresponded with those of the proliferation phase of the normal menstrual cycle (mean 115 pg/ml). In six women with histologically established endometritis low oestrogen levels were found before and after the abrasion, the mean values being 101 pg/ml and 36 pg/ml, respectively. On the fifth day the values continued to remain low (average 25 pg/ml). The difference in oestrogen concentrations of both groups was significant and correlated well with the results of histological examination of the abraded parts.

Abortion, Spontaneous↗
PubMed1979

[New considerations in therapeutic abortions using a second generation prostaglandins (author's transl)].

The results of 98 therapeutic abortions in the first and second trimester of pregnancy using F prostaglandins are reported. The prostaglandins were eigher administered by fractionated extra-aminotic PGF2 alpha, intramuscular 15-methyl PGF2 alpha or extra-amniotic or intracervical single shot 15-methyl PGF2 alpha. The induction abortion time of 13 hours and 15minutes for the single shot and 14 hours and 28 minutes for the intramuscular administratic with the prostaglandin derivatives is shorter than with natural prostaglandins which showed a mean induction to abortion time of 19 hours and 30 minutes. The blood loss was low in all groups at approximately 75 mls. Side effects are least with the single shot method (11%). Two patients had nausea, two patients had vomiting, three patients had flush or lower abdominal cramps. The intramuscular administration showed the highest frequency of side effects (80%). In the first trimester the single shot method always leads to sufficient cervical dilatation although the abortion rate was low at 59%. During the second trimester a high abortion rate is found. Therefore this method can be recommended for therapeutic abortions.

Abortion, Induced↗
PubMed1978

[New aspects of pathogenesis and treatment of dysmenorrhoea (author's transl)].

Menstrual blood of 5 dysmenorrhoeic women was collected in tampons during two menstrual cycles without and four cycles with intrauterine progesterone treatment (Progestasert). Three eumenorrhoeic women served as controls. Progesterone was assayed radioimmunologically after purification and extraction. Total progesterone excretion in the menstrual blood was the same in eumenorrhoeic and dysmenorrhoeic women without treatment. An increase of menstrual progesterone excretion by the factor 13 was found during the first bleeding after insertion of progesterone T. After 12 months of treatment with Progestasert only 41.7% (2 alpha less than or equal to 0.001) of the initial progesterone amount per menstruation was found. The progesterone concentration per ml menstrual blood had decreased in the same way but was still clearly higher than eumenorrhoeic values. The results indicate that progesterone controls intrauterine prostaglandin F2alpha formation indirectly.

Dysmenorrhea↗
PubMed1978

[The effect of progesterone uterine therapeutic system on dysmenorrhoea: prostaglandin F2alpha levels in menstrual blood (author's transl)].

The menstrual flow of five dysmenorrhoeic women was collected, four cycles with and two cycles without local intrauterine administration of progesterone (Progestasert). The menstrual flow of three eumenorrhoeic women served as control. Menstrual blood was collected by tampons stored in butyl-alcohol saturated with water. Prostaglandin F2alpha (PGF2alpha) was measured after purification and extraction by radioimmunoassay. The PGF2alpha production rate and concentration per ml of menstrual blood from dysmenorrhoeic women differed significantly from those of eumenorrhoeic women. In the treated cycles the PGF2alpha levels were significantly decreased (2 alpha less than or equal to 0,01), corresponding to eumenorrhoeic levels. These values were in accordance with the clinical results and indicate that uterine PG-synthesis is under progesterone control.

Administration, Topical↗
PubMed1978

[Secondary amenorrhoea (author's transl)].

27 patients with secondary amenorrhoea for 6--20 months were investigated with a gonadorelin (GnRH-)test and a psychoanalytical exploration. Results, which were determined independently of each other, were then correlated. According to the gonadorelin and the gestagen test patients could be allocated to four groups: test group 1 = negative gestagen test, LH peak below 8 ng/ml, test group 2 = positive gestagen test, LH peak below 8 ng/ml, test group 3 = positive gestagen test, LH peak 8--20 ng/ml, test group 4 = positive gestagen test, LH peak 20--37 ng/ml. According to the psychoanalytical exploration two groups of patients could be differentiated. Patients of test group 1 and 2 showed psychosomatic disorders to a greater extent with pronounced associated somatic symptoms and predominantly retentive personality structures. Patients in test groups 3 and 4 showed predominantly associated mental symptoms accompanied by better insight into their own conflicts.

Adult↗
PubMed1978

Effect of pyridoxine on plasma levels of HGH, PRL, and TSH in normal women.

The effect of chronic administration of pyridoxine (vitamin B6) on HGH, basal and TRH stimulated PRL and TSH levels was studied in seven healthy female volunteers. HGH and TSH basal levels remained unaffected. Basal PRL and TRH stimulated PRL and TSH levels were slightly reduced without statistical significance (P greater than 0.05). The results indicate, that stimulation of the hypothalamic dopaminergic pathway by pyridoxine is highly variable and unpredictable. Therefore it seems meaningless to recommend vitamin B6 for the treatment of hyperprolactinaemia.

Administration, Oral↗
PubMed1978

[Nonpuerperal mastitis in the hormonal stimulated breast (author's transl)].

Three patients with nonpuerperal mastitis are presented. The inflammation was supposedly related to hormonal stimulation of the breast. One patient suffered from hyperplasia of the breast, the second patient exhibited a rapidly growing fibroadenoma, a third patient developed a recurrent purulent mastitis on the basis of galactorrhea. All patients improved after exclusive administration of bromocriptine without the addition of antibiotics.

Adenofibroma↗