EFFECT OF D-Trp6-LH-RH ON THE PITUITARY-GONADAL AXIS DURING THE LUTEAL PHASE IN THE BABOON

1979 ◽  
Vol 91 (2) ◽  
pp. 217-223 ◽  
Author(s):  
N. Hagino ◽  
O. Nakamoto ◽  
Y. Kunz ◽  
A. Arimura ◽  
D. H. Coy ◽  
...  
Keyword(s):  
Menstrual Cycle ◽  
Plasma Level ◽  
Plasma Levels ◽  
Luteal Phase ◽  
Ovarian Function ◽  
Lh Rh

ABSTRACT An effect of D-Trp6-LH-RH (superactive LH-RH agonist) in the pituitary and ovarian function was examined. Four regularly cycling baboons were used for this study. After determination of control values of plasma levels of LH, oestrogen and progesterone during the entire menstrual cycle, D-Trp6-LH-RH was infused subcutaneously for 7 days during the early luteal phase in these four baboons. An infusion of D-Trp6-LH-RH increased plasma LH and oestrogen, but it failed to alter the plasma level of progesterone. From these results, it seems unlikely that 1) D-Trp6-LH-RH has a luteolytic effect, and 2) an increased ovarian oestrogen causes luteolysis in the baboon.

EFFECT OF LH-RH ON SERUM FSH, LH AND PROGESTERONE DURING THE LUTEAL PHASE OF THE MENSTRUAL CYCLE

1975 ◽  
Vol 80 (1_Suppla) ◽  
pp. S20
Author(s):  
I. Gerhard ◽  
M. Röhrich ◽  
K. Klinga ◽  
B. Runnebaum
Keyword(s):  
Menstrual Cycle ◽  
Luteal Phase ◽  
Lh Rh

Hypothalamus pituitary-ovarian axis in menstrual migraine: effect of dihydroergotamine retard prophylactic treatment

Cephalalgia ◽  
1983 ◽  
Vol 3 (1_suppl) ◽  
pp. 159-162 ◽  
Author(s):  
F. Facchinetti ◽  
G. Sances ◽  
A. Volpe ◽  
D. Sola ◽  
G. D'ambrogio ◽  
...  
Keyword(s):  
Menstrual Cycle ◽  
Plasma Levels ◽  
Luteal Phase ◽  
Prophylactic Treatment ◽  
Menstrual Migraine ◽  
Ovarian Steroids ◽  
Control Subjects ◽  
Sono Stati ◽  
Before And After

LH, FSH, Prolactin (PRL), Estradiol (E) and Progesterone (P) plasma levels were measured in different periods of the menstrual cycle in 15 control subjects and in 9 women suffering from perimenstrual migraine before and after prophylactic treatment with 10 mg/day dihydroergotamine (DHE) retard. LH, FSH and PRL plasma levels were similar between patients and controls and were unaffected by DHE therapy. Migraineurs showed markedly reduced P levels in the entire luteal phase, concomitantly with higher E levels, leading to a P/E ratio significantly interfering with ovarian steroids secretion. These data indicate the presence of ovarian impairment in women suffering from perimenstrual migraine, whose symptoms could be successfully treated with DHE retard without interfering with the endocrine state. Les variations cicliques de LH, FSH, Prolactine (PRL) de la Estradiol (E) et de la Progesterone (P) ont ete evaluèes chez 15 subjets temoins et chez 9 femmes souffrant de la maladie migraineuse, en conditions de base et au cours d'un traitment prophilactique avec 10 mg par jour de Dihydroergotamine (DHE) rètard. LH, FSH et PRL etaient au meme niveau chez les temoins et les patients et n'ont pas ètè modifiès par le traitment avec DHE rètard; tandis que les taux plasmatiques de la P etaient rèduites et, au contraire, ceux de la E eatient elevèes pendant toute la phase luteale des migraineuses. Par consequence le rapport P/E les patientes etait significativement inferieur que chez les temoins. Le traitment avec la DHE rètard a presque totalement prevenue les accès migraineux, sans modifier le status normonal. Les femmes souffrant de maladie migraineuse au cours du cicle menstruel, notament dans la periode premenstruelle, montrent des affections de la secretion ovarienne qui doivent etre ancore expliquées. En tous cas las symptomatologie peut etre convenablement rèlevèe par le traitment prophilactique avec DHE rètard qui d'ailleur n'a aucune influence sur les secretions hypophisaires et ovariennes. I tassi plasmatici di LH, FSH, Prolattina (PRL), Estradiolo (E) e Progesterone (P) sono stati studiati nel corso del ciclo mestruale in 15 soggetti di controllo e in 9 pazienti affette da emicrania premestruale prima e dopo un trattamento profilattico con Diidroergotamina (DHE) ritardo (10 mg/die). LH, FSH e PRL sono risultati simili nei due gruppi e non ha mostrato variazioni in seguito al trattamento. Durante l'intera fase luteale, i tassi di P delle pazienti sono risultati significativamente ridotti, mentre quelli di E al contrario, erano più elevati, rispetto a quelli dei soggetti di controllo. La terapia con DHE ha pressoché abolito l'insorgenza degli attacchi emicranici, senza interferire con le concentrazioni di E e P. In conclusione, questi dati indicano che le pazienti affette da emicrania perimestruale presentano un'alterazione della funzione ovarica che resta da definire. Il trattamento profilattico conDHE ritardo però, è risultato efficacie nella abolizione delle crisi, senza interferire con le secrezioni ormonali.

SUPRAHYPOPHYSEAL DYSFUNCTION IN A PATIENT WITH ASEXUAL ATELEIOSIS

1978 ◽  
Vol 87 (3) ◽  
pp. 449-455
Author(s):  
Martha Medina ◽  
Adalberto Parra ◽  
Hugo E. Scaglia ◽  
Laura Nieto ◽  
Gregorio Pérez-Palacios
Keyword(s):  
Plasma Levels ◽  
Ovarian Function ◽  
Clomiphene Citrate ◽  
Pubertal Development ◽  
Significant Rise ◽  
Primary Amenorrhoea ◽  
Gh Secretion ◽  
Normal Limits ◽  
Undetectable Plasma ◽  
Lh Rh

ABSTRACT The neuroendocrine function of a 19 years old female dwarf with primary amenorrhoea and lack of sexual development (asexual ateleiosis) was studied. Undetectable fasting plasma levels of growth hormone (GH) and a lack of response to three different provocative stimuli was observed. Oestrogen administratin did not modify the GH response. Thyroid and adrenal function were within normal limits. Undetectable plasma levels of immunoreactive oestradiol and lack of oestrogenic activity in vaginal smears indicated absence of ovarian function. Low levels of circulating gonadotrophins with a significant rise after synthetic LH-RH administration was demonstrated, while clomiphene citrate failed to induce ovulation. Following 6 months of continuous GH administration a significant increase in the growth rate was evident, whereas no pubertal development was observed. These data are interpreted as demonstrating the suprahypophyseal origin of the sexual infantilism in a patient with inappropriate GH secretion. It is suggested that a combined deficiency of LH-RH and GH-RH may account for the aetiology of this disorder.

Indices of ovulation: comparison of plasma and salivary levels of progesterone with urinary pregnanediol

1984 ◽  
Vol 100 (1) ◽  
pp. 75-80 ◽  
Author(s):  
M. G. Metcalf ◽  
J. J. Evans ◽  
J. A. Mackenzie
Keyword(s):  
Menstrual Cycle ◽  
Luteal Phase ◽  
Follicular Phase ◽  
The Other ◽  
Urine Samples ◽  
Median Increase ◽  
Daily Excretion ◽  
Alternative Procedures ◽  
Biochemical Assessment

ABSTRACT An increased daily excretion of pregnanediol, relative to that early in the menstrual cycle, is often taken to be evidence that a woman has ovulated. This paper assesses the value of alternative procedures for this purpose. Urine, plasma and saliva samples were collected during a 24-h period from 20 women during the follicular phase and from 20 women during the luteal phase. The 24-h excretion of pregnanediol was compared with (1) the concentration of progesterone in plasma, (2) the concentration of progesterone in saliva, (3) the concentration of pregnanediol in small urine samples, (4) the rate of excretion of pregnanediol and (5) the ratio of pregnanediol to creatinine in small urine samples. Each analyte increased substantially during the luteal phase. The median increases (ratio of luteal to follicular phase values) were 14·8, 3·2, 10·6, 11·9 and 11·1 respectively. By comparison, the median increase in 24-h pregnanediol output was 9·2. When the other analytes were used instead of the 24-h excretion of pregnanediol to assess the possibility of ovulation, the incidence of misclassifications (follicular samples classed as luteal and luteal samples classed as follicular) was 0, 12·8, 5·9, 2·0 and 1·0% respectively. It was concluded that the most satisfactory alternative to the measurement of 24-h pregnanediol output for the biochemical assessment of ovulation based on progesterone production was the measurement of the concentration of progesterone in plasma; the least satisfactory alternative was determination of the concentration of progesterone in saliva. If blood was not available, measurement of the ratio of pregnanediol to creatinine in a small urine sample was the preferred method. J. Endocr. (1984) 100, 75–80

THE SEQUENCE OF PITUITARY RESPONSES TO SYNTHETIC LUTEINIZING HORMONE RELEASING HORMONE (LH-RH) THROUGHOUT THE NORMAL MENSTRUAL CYCLE

1975 ◽  
Vol 79 (4) ◽  
pp. 625-634 ◽  
Author(s):  
Elwyn M. Grimes ◽  
Irwin E. Thompson ◽  
Melvin L. Taymor
Keyword(s):  
Menstrual Cycle ◽  
Luteal Phase ◽  
Follicular Phase ◽  
Lh Surge ◽  
Luteinizing Hormone Releasing Hormone ◽  
Late Luteal Phase ◽  
Normal Menstrual Cycle ◽  
Early Follicular Phase ◽  
Lh Rh ◽  
Late Follicular Phase

ABSTRACT Thirty-one ovulatory women between 20 and 33 years of age were given 150 μg of synthetic LH-RH during different phases of the menstrual cycle. Five patients were studied during the early follicular phase (days 4–7); 10 patients during the late follicular phase (days 9–12); 6 patients during the "LH Surge"; 5 patients during the early luteal phase (days 14–16); 3 patients during mid-luteal phase (days 17–21); and 2 patients during late luteal phase (days 22–27). Oestrogen, progesterone, FSH and LH levels were determined from 30 min prior to LH-RH administration to 90 min thereafter in all cases. LH response to LH-RH increased progressively during the follicular phase. Enhanced pituitary responsiveness to LH-RH occurred at mid-cycle for both LH and FSH and maximum LH responses occurred during the "LH Surge" and early luteal phase. LH responses during the mid and late luteal phases were similar to late follicular phase responses. There were no significant differences between FSH responses during the early follicular, late follicular, mid-luteal and late luteal phases. Maximum pituitary responsiveness appears to occur in a gonadal steroid milieu of high oestrogen levels in association with rising but low progesterone levels. Progesterone or a crucial oestrogen: progesterone ratio may in fact potentiate pituitary release of LH during the early stages of corpus luteum formation. Pituitary responsiveness to LH-RH correlates positively with basal LH and oestrogen levels during the menstrual cycle and with the oestrogen:progesterone ratio during the luteal phase.

A MODIFIED METHOD FOR THE QUANTITATIVE DETERMINATION OF PROGESTERONE IN HUMAN PLASMA

1963 ◽  
Vol 43 (1) ◽  
pp. 101-109 ◽  
Author(s):  
Ian F. Sommerville ◽  
Mary T. Pickett ◽  
William P. Collins ◽  
Diane C. Denyer
Keyword(s):  
Menstrual Cycle ◽  
Quantitative Determination ◽  
Human Plasma ◽  
Peripheral Blood ◽  
Luteal Phase ◽  
Chemical Method ◽  
Blood Levels ◽  
Modified Method

ABSTRACT A more sensitive and less complicated chemical method has been evolved for the quantitative determination of progesterone in 5–10 ml samples of human plasma. The method is suitable for application to peripheral blood levels at all stages of pregnancy and may be applied to the study of the luteal phase of the menstrual cycle. The sensitivity, accuracy, precision and specificity of the method are discussed.

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