Serum prolactin and thyrotrophin responses to thyrotrophin-releasing hormone at different times of the day in normal women

1981 ◽  
Vol 97 (1) ◽  
pp. 7-11 ◽  
Author(s):  
F. R. Pérez-López ◽  
G. Gómez ◽  
M. D. Abós
Keyword(s):  
Serum Prolactin ◽  
Thyrotrophin Releasing Hormone ◽  
Releasing Hormone ◽  
Before And After ◽  
The Mean ◽  
The Difference ◽  
Normal Women ◽  
Hormonal Release ◽  
Test Serum ◽  
Serum Tsh

Abstract. In order to determine whether or not the pituitary responsiveness to thyrotrophin-releasing hormone (TRH) changes during the nyctohemeral cycle, 10 healthy regularly cycling women were given 200 μg of TRH at 02.00 h, 10.00 h and 18.00 h with at least a 32 h interval between each test. Serum prolactin (Prl) and thyrotrophin (TSH) in 7 of the 10 women were measured serially before and after TRH administration. The mean basal Prl levels were significantly higher (P < 0.01) at 02.00 h than at 10.00 h and 18.00 h. The mean basal TSH levels were higher, although not significantly, at 02.00 h than at 10.00 h and 18.00 h. Although a higher TSH release occurred at 02.00 h than at 10.00 h and 18.00 h, the mean serum TSH and Prl peak responses to TRH were statistically similar in the three groups of tests. The integrated changes scores, calculated as the difference between the average post-TRH hormonal release and the average baseline levels, although higher in the 18.00 h test for Prl and the 02.00 h test for TSH, were not statistically different among the three tests.

The clinical and biochemical features in 26 patients with prolactinoma before and after transsphenoidal microresection

1980 ◽  
Vol 94 (4) ◽  
pp. 450-458 ◽  
Author(s):  
Naguib A. Samaan ◽  
George E. Elhaj ◽  
Milam E. Leavens ◽  
Robert R. Franklin
Keyword(s):  
Luteinizing Hormone ◽  
High Serum ◽  
Serum Prolactin ◽  
Plasma Testosterone ◽  
Pituitary Fossa ◽  
Thyrotrophin Releasing Hormone ◽  
Releasing Hormone ◽  
Serum Luteinizing Hormone ◽  
Before And After ◽  
The Difference

Abstract. Twenty-six women, 16 to 40 years of age, with amenorrhoea with or without galactorrhoea and abnormal pituitary fossa tomogram were studied before and after transsphenoidal resection of their pituitary adenomas. The immunoreactive serum prolactin (Prl) was abnormally high both before and after intravenous (iv) administration of thyrotrophin-releasing hormone (TRH) but the rise was blunted. The serum Prl level returned to normal post-operatively in 20 patients, but the subnormal rise after TRH persisted in 23 patients. The basal serum luteinizing hormone (LH) and follicle-stimulating hormone (FSH) were normal before and after surgery. The peak serum level of LH after administration of the luteinizing hormone-releasing hormone (LRH) was normal but the peak FSH was significantly high before surgery (P < 0.001) and returned to normal post-operatively. Plasma oestradiol (Oe2) was significantly low compared to that after surgery (P < 0.001). Plasma testosterone (T) was significantly higher before surgery than that found in normal women (P < 0.001) and the level fell post-operatively. Plasma androstenedione (A) was higher before surgery than found in normals, but the difference was not significant (P < 0.2). Post-operatively, 23 patients regained their normal menses. Three of these 23 patients continued to have high serum Prl but the serum Oe2 returned to normal. Sixteen of 20 patients who desired pregnancy became pregnant post-operatively. None of the patients required hormonal replacement after surgery. These data indicate that the measurement of LH or FSH at basal and after LRH stimulation, may not be of significant prognostic importance compared with serum Prl and plasma Oe2. Regular menses and pregnancy can occur in some patients in spite of moderately high serum Prl but normal plasma Oe2 levels. Surgical resection of prolactinoma has low morbidity with a high incidence of success resulting in return of normal menses and fertility. The persistent subnormal rise of Prl after TRH post-operatively in the majority of the patients suggests that long-term follow-up for evidence of recurrence is indicated.

SERUM THYROTROPHIN AND THE RESPONSE TO THYROTROPHIN RELEASING HORMONE IN SYMPTOMLESS AUTOIMMUNE THYROIDITIS AND IN BORDERLINE AND OVERT HYPOTHYROIDISM

1974 ◽  
Vol 75 (2) ◽  
pp. 274-285 ◽  
Author(s):  
A. Gordin ◽  
P. Saarinen ◽  
R. Pelkonen ◽  
B.-A. Lamberg
Keyword(s):  
Autoimmune Thyroiditis ◽  
Elevated Serum ◽  
Mean Value ◽  
Primary Hypothyroidism ◽  
Overt Hypothyroidism ◽  
Thyrotrophin Releasing Hormone ◽  
Releasing Hormone ◽  
The Mean ◽  
The Individual ◽  
Serum Tsh

ABSTRACT Serum thyrotrophin (TSH) was determined by the double-antibody radioimmunoassay in 58 patients with primary hypothyroidism and was found to be elevated in all but 2 patients, one of whom had overt and one clinically borderline hypothyroidism. Six (29%) out of 21 subjects with symptomless autoimmune thyroiditis (SAT) had an elevated serum TSH level. There was little correlation between the severity of the disease and the serum TSH values in individual cases. However, the mean serum TSH value in overt hypothyroidism (93.4 μU/ml) was significantly higher than the mean value both in clinically borderline hypothyroidism (34.4 μU/ml) and in SAT (8.8 μU/ml). The response to the thyrotrophin-releasing hormone (TRH) was increased in all 39 patients with overt or borderline hypothyroidism and in 9 (43 %) of the 21 subjects with SAT. The individual TRH response in these two groups showed a marked overlap, but the mean response was significantly higher in overt (149.5 μU/ml) or clinically borderline hypothyroidism (99.9 μU/ml) than in SAT (35.3 μU/ml). Thus a normal basal TSH level in connection with a normal response to TRH excludes primary hypothyroidism, but nevertheless not all patients with elevated TSH values or increased responses to TRH are clinically hypothyroid.

EFFECT OF THYROTROPHIN RELEASING HORMONE (TRH) IN PATIENTS WITH PITUITARY DISORDERS

1977 ◽  
Vol 85 (3) ◽  
pp. 479-487 ◽  
Author(s):  
J. Lindholm ◽  
H. Dige-Petersen ◽  
L. Hummer ◽  
P. Rasmussen ◽  
O. Korsgaard
Keyword(s):  
Pituitary Tumour ◽  
Thyroid Stimulating Hormone ◽  
Trh Test ◽  
Thyrotrophin Releasing Hormone ◽  
Releasing Hormone ◽  
Basal Serum ◽  
Chromophobe Adenoma ◽  
Before And After ◽  
Hypothyroid Patients ◽  
Serum Tsh

ABSTRACT The secretion and biological activity of thyroid stimulating hormone (TSH) were studied in 22 patients with a pituitary tumour (17 acromegalics and 5 patients with a chromophobe adenoma) and in 36 hypophysectomized patients (16 acromegalics and 20 with a chromophobe adenoma). Thyroid function was assessed by serum thyroxine (T4), serum triiodothyronine (T3), and thyroxine-binding globulin (TBG) concentration. Serum TSH was measured before and after injection of TSH releasing hormone (TRH), and in 19 hypophysectomized patients the T3 response after TRH was measured. In addition a TRH test was performed 1–2 weeks after surgery in 11 patients. The basal serum TSH did not differ from euthyroid control values in any of the groups and no late effect of hypophysectomy was observed. Subnormal peak TSH values were seen in 10 out of 37 euthyroid patients, whereas 9 out of 11 hypothyroid patients responded normally. Hypophysectomy caused an immediate but transient decrease in peak TSH in patients with a chromophobe adenoma only. The rise in serum T3 after TRH was significantly lower in hypophysectomized patients than in controls. An increase in TSH was followed by a T3 response in all patients except in 4 out of 8 euthyroid acromegalics. In patients operated on for a chromophobe adenoma the T3 response was correlated with serum T4, whereas this was not the case in acromegalics.

SOME ASPECTS OF HYPOTHALAMIC-PITUITARY FUNCTION IN PATIENTS WITH ANOREXIA NERVOSA

1976 ◽  
Vol 81 (2) ◽  
pp. 252-262 ◽  
Author(s):  
P. Travaglini ◽  
P. Beck-Peccoz ◽  
C. Ferrari ◽  
B. Ambrosi ◽  
A. Paracchi ◽  
...  
Keyword(s):  
Anorexia Nervosa ◽  
Serum Testosterone ◽  
Normal Subjects ◽  
Control Group ◽  
Thyrotrophin Releasing Hormone ◽  
Releasing Hormone ◽  
The Mean ◽  
Normal Increase ◽  
Lh Rh ◽  
Serum Tsh

ABSTRACT The secretion of luteinizing hormone (LH), follicle-stimulating hormone (FSH), thyrotrophin (TSH) and prolactin (PRL, was studied in 17 women suffering from anorexia nervosa. The mean basal serum LH was reduced (8.4 ± 0.8 se mIU/ml; P < 0.001 vs normal controls), while LH increase after gonadotrophin-releasing hormone (LH-RH) appeared to be normal in 9 cases and impaired in 6 cases. The mean basal FSH did not significantly differ from normal subjects (3.9 ± 0.5 mIU/ml), while LH-RH administration elicited an exaggerated increase in 7 cases and a normal increase in 8 cases: the mean FSH response was significantly higher than in controls (P < 0.02). Plasma oestradiol-17β was reduced (20.4 ± 0.4 pg/ml; P < 0.001) while the serum testosterone levels were normal (0.73 ± 0.09 ng/ml). Clomiphene administration induced an increase in gonadotrophins in only 1 out of 7 patients. The mean serum TSH concentration was normal (2.3 ± 0.4 μU/ml), while serum thyroxine and triiodothyronine and free thyroxine index, though generally in the normal range, were significantly lower than values obtained in a control group (6.1 ± 0.4 μg/100 ml, P< 0.005; 102.3±7.7 ng/100 ml, P <0.005; 3.8±0.3, P < 0.05). Though the mean serum TSH increase after thyrotrophin-releasing hormone (TRH) was normal (12.0 ± 2.3 μU/ml), there were 4 impaired and 1 exaggerated increases, and 8 patients showed a delayed and frequently prolonged response. The increase in serum T3 after TRH appeared lower than in normal subjects (36.3 ± 1.8 ng/100 ml, P < 0.001). Serum PRL levels in basal conditions were higher than in the controls (19.4 ± 4.1 ng/ml, P < 0.001) while the increase in PRL after TRH was exaggerated in only 2 patients. The present data suggest that the primary failure in gonadotrophin secretion in anorexia nervosa occurs at hypothalamic level; moreover the data on TSH and PRL secretion also point to the existence of a hypothalamic disorder in this disease.

EFFECTS OF SYNTHETIC LH/FSH-RELEASING HORMONE (LRH) ON PLASMA LH AND FSH IN AMENORRHOEIC WOMEN

1974 ◽  
Vol 75 (4) ◽  
pp. 647-652 ◽  
Author(s):  
G. Rannevik ◽  
J. Thorell
Keyword(s):  
Urinary Excretion ◽  
Initial Response ◽  
Releasing Hormone ◽  
The Mean ◽  
The Difference ◽  
Serial Measurements

ABSTRACT Eight amenorrhoeic women were given 100 μg synthetic LRH (Hoechst) iv and im, respectively, at an interval of 2 weeks. Four of the women received the iv injection first and four the im injection. The urinary excretion of oestrogens and pregnanediol was low and unaltered throughout the test weeks. The effects of LRH were compared by serial measurements of the plasma LH and FSH during 8 h. The initial response of LH for up to 25 min and that of FSH for up to 60 min were equal whether LRH was given iv or im. The difference appeared later. Four hours after the injection the mean increase of LH to iv injection was 0.5 ng/ml (N. S.), while that to im injection was 1.9 ng/ml (P < 0.01). The corresponding values for FSH were 1.3 (P < 0.05) and 3.2 (P < 0.001). The effect of LRH administration im was thus found to be larger and more prolonged.

Pituitary responses to a dopamine antagonist at different times of the day in normal women

1982 ◽  
Vol 100 (4) ◽  
pp. 481-485 ◽  
Author(s):  
F. R. Pérez-López ◽  
C. M. González-Moreno ◽  
M. D. Abós ◽  
J. A. Andonegui ◽  
R. H. Corvo
Keyword(s):  
Serum Prolactin ◽  
Dopamine Antagonist ◽  
Hormonal Changes ◽  
Healthy Women ◽  
Serum Lh ◽  
Normal Women ◽  
The Times ◽  
Serum Tsh

Abstract. In order to determine whether or not pituitary responsiveness to the dopaminergic antagonist clebopride changes during the nyctohemeral cycle, 10 healthy women with regular cycles were given 1 mg of clebopride orally at 09.00 h and 24.00 h with at least a 5 day interval between each test. In addition, 5 of the women were given a placebo instead of clebopride at midnight to evaluate the spontaneous hormonal changes. During the 24.00 h test the women had significantly higher P < 0.05) mean TSH basal levels. Serum prolactin (Prl) increased significantly (P < 0.001) after clebopride administration while these changes did not occur when placebo was used instead of clebopride at midnight. The Prl response to clebopride was qualitatively similar at 09.00 h and at 24.00 h. Clebopride given at midnight induced a significant increase (P < 0.05) in serum TSH while this change did not occur when the drug was given at 09.00 h or when placebo was given at midnight. The administration of clebopride resulted in no discernible alterations in serum LH, FSH or GH in either the 09.00 h or the 24.00 h tests. Thus, Prl responses to clebopride were similar in the morning and at midnight, TSH significantly increased after clebopride at midnight whereas this did not occur when the drug was given in the morning, and no significant changes were induced in LH, FSH or GH at the times studied.

DIE AUSSCHEIDUNG VON TESTOSTERON UND EPITESTOSTERON BEI FRAUEN AM ENDE DER SCHWANGERSCHAFT

1969 ◽  
Vol 60 (4) ◽  
pp. 579-585
Author(s):  
K. Schollberg ◽  
E. Seiler ◽  
J. Holtorff
Keyword(s):  
Urinary Excretion ◽  
Late Pregnancy ◽  
Mean Values ◽  
Pregnant Females ◽  
Female Foetus ◽  
The Mean ◽  
The Difference ◽  
Normal Women ◽  
In Pregnancy

ABSTRACT The urinary excretion of testosterone and epitestosterone by women in late pregnancy has been studied. The mean values of 22 normal women in pregnancy mens X are 12.9 ± 9.2 μg/24 h in the case of testosterone and 16.1 ± 16.2 μg/24 h in the case of epitestosterone. Both values do not differ significantly from those of non-pregnant females. The excretion values of mothers bearing a male foetus (17.3 ± 8.9 μg/24 h) are higher than those of mothers with a female foetus (6.4 ± 4.8 μg/24 h). The difference is statistically significant with P = 0.01.

INFLUENCE OF PHOTOPERIOD ON THYROTROPIN RELEASING HORMONE-INDUCED PROLACTIN RELEASE IN EWES

1983 ◽  
Vol 63 (1) ◽  
pp. 67-73 ◽  
Author(s):  
B. E. HOWLAND ◽  
D. SONYA ◽  
L. M. SANFORD ◽  
W. M. PALMER
Keyword(s):  
Thyrotropin Releasing Hormone ◽  
Day Length ◽  
Constant Light ◽  
Serum Prolactin ◽  
Prolactin Release ◽  
Blood Samples ◽  
Releasing Hormone ◽  
Before And After ◽  
Release Curve ◽  
Short Days

The influence of photoperiod on serum prolactin levels and prolactin release induced by thyrotropin releasing hormone (TRH) was determined in ewes maintained under the following lighting regimes: Room 1, lighting mimicked natural changes in photoperiod; Room 2, annual photoperiod changes condensed into 6 mo with short days in June; Room 3, same as Room 2 except photoperiod changed abruptly from 16.5 to 8.0 h on 21 Mar. and back to 16.5 h on 21 June; Room 4, constant light. Weekly blood samples were obtained from February to August. Additionally, blood samples were collected before and after treatment with 10 μg TRH on 19 May, 13 June, 27 June and 19 July. Prolactin levels were elevated in ewes exposed to long days or constant light. The mean of all pre-TRH samples was significantly correlated with stress-induced elevations in prolactin (highest pre-TRH value) (r = 0.72) and area under the TRH-induced release curve (r = 0.56). The prolactin release in response to TRH was greatest in ewes exposed to long days or constant light. Abrupt increase of day length elevated pretreatment prolactin levels (P < 0.01) and increased area under the response curve (P < 0.05). Key words: Photoperiod, TRH, prolactin, ewes

scholarly journals Influence of Apical Patency and Cleaning of the Apical Foramen on Periapical Extrusion in Retreatment

2013 ◽  
Vol 24 (5) ◽  
pp. 482-486 ◽  
Author(s):  
Marili Doro Andrade Deonizio ◽  
Gilson Blitzkow Sydney ◽  
Antonio Batista ◽  
Roberto Pontarolo ◽  
Paulo Ricardo Bittencourt Guimarães ◽  
...  
Keyword(s):  
Material Removal ◽  
Filling Material ◽  
Mean Values ◽  
Filtration System ◽  
Root Canal Retreatment ◽  
Significant Difference ◽  
Before And After ◽  
The Mean ◽  
The Difference ◽  
Removal Technique

This study evaluated the influence of apical patency, root filling removal technique and cleaning of the apical foramen, concerning the amount of debris extruded during root canal retreatment. Forty mandibular incisors were randomly assigned to 4 groups - GIM (n=10), GIIM (n=10), GIPT (n=10) and GIIPT (n=10), which were named according to leaving (I) or not (II) apical patency during canal preparation and filling removal technique (manual - M or ProTaper system - PT). After filling material removal, each specimen of each group had the apical foramen cleaned by sizes 15, 20 and 25 instruments, generating 12 subgroups: GIM15, GIM20, GIM25, GIIM15, GIIM20, GIIM25, GIPT15, GIPT20, GIPT25, GIIPT15, GIIPT20 and GIIPT25. Extruded filling debris was collected by a Milipore filtration system, an HV-durapore, 0.45 µm pore filter with a 25 mm diameter. The filters were weighed before and after the collection on an analytical scale (10–5 g), and the difference was calculated. The mean weight of extruded filling debris was analyzed statistically by Kruskal-Wallis and Friedman ANOVA tests (α=0.05). The mean values found in the groups (in mg) were: GIM (0.95±0.94), GIIM (0.47±0.62), GIPT (0.30±0.31) and GIIPT (0.32±0.44). There was no statistically significant difference among any of the groups or subgroups (p>0.05). ProTaper provided the smallest amount of extruded filling material, regardless of presence or absence of apical patency, followed by manual technique, without and with apical patency. Additional amounts of debris were collected during cleaning of the apical foramen, regardless of the instrument, presence/absence of patency or root filling removal technique.

scholarly journals Audio-visual media to improve sexual-reproduction health knowledge among adolescent

2020 ◽  
Vol 9 (1) ◽  
pp. 138
Author(s):  
Sitti Nur Djannah ◽  
Sulistyawati Sulistyawati ◽  
Tri Wahyuni Sukesi ◽  
Surahma Asti Mulasari ◽  
Fatwa Tentama
Keyword(s):  
Sexual Reproduction ◽  
Junior High School ◽  
Health Knowledge ◽  
Visual Media ◽  
Wilcoxon Test ◽  
Post Intervention ◽  
Before And After ◽  
The Mean ◽  
The Difference ◽  
Source Of Information

<span>Lacking knowledge among adolescents affects their understanding of some problems related to sexual-reproduction health. Electronic media recognized as the favored source of information for adolescents. This research aimed to assess the effect of audio-visual media to the increasing of sexual-reproduction knowledge. We conducted a before and after without control informal experimental study design into 153 students in the 1st-3rd grade of junior high school. The effect of the intervention was assessed through the difference between pre- and post-intervention by using the Wilcoxon test. The mean score of the respondent pre and post-intervention was significantly increasing. The audiovisual increased the knowledge of the adolescent regarding sexual-reproduction health</span>

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