Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0011570 (depression)
 172,036 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

In order to assess the stimulatory effect of prolactin on the secretion of progesterone from corpora lutea in lactating rats, ergocornine meleate (ECO; 1 mg/day), an inhibitor of prolactin secretion, was administered subcutaneously on days 6 and 7 of lactation in primiparous rats. By day 8 of lactation, the concentration of progesterone in ovarian venous blood fell to a undetectable level in the ECO-treated animals, while the concentration in the control animals was very high at this stage of lactation. The level of 20-alpha-hydroxypregn-4-en-3-one was significantly higher on day 8 of lactation in ECO-treated than in control rats. Lactational dioestrus was interrupted by treatment with ECO and vaginal oestrus appeared 3-4 days after the start of treatment. Administration of ECO caused deleterious depression of milk production and of food intake of mother rats. In the pair-fed control animals, lactation continued almost normally throughout the experimental period. Prolactin (1 mg/day) administered simultaneously with ECO increased progesterone to levels even higher than those in control rats and restored 20-alpha-hydroxypregn-4-en-3-oen levels to those of the controls. The effect of the drug on milk production was alleviated. The results strongly suggest that prolactin is the most important factor in maintaining the function of corpora lutea in the lactating rats.
 ...
PMID:Suppression of progesterone secretion in lactating rats by administration of ergocornine and the effect of prolactin replacement. 117 15

Intramuscular injection of 0.2 mg methylergobasine maleate3) (Methergin, Sandoz) in women on day 3 post-partum, in regularly menstruating women and in adult men, is followed within 30 to 75 min by a 50% decrease in serum prolactin concentration: the levels remain low until 180 min and increase between 180 and 240 min. The amplitude of the decrease is the same when prolactin is measured in terms of the same serum prolactin standard by a homologous ovine assay and by a homologous human assay. However, in the case of regularly menstruating women and of men serum prolactin concentration is some three times higher when estimated by the ovine assay than when estimated by the human assay. This difference between assay results obtained by the two radioimmunoassay methods could be due to heterogeneity of serum prolactin. However, non-specific effects of serum are not excluded. In regularly menstruating women and in men, intramuscular injection of 0.2 mg methylergobasine maleate is followed within 45 to 75 min by a 50% decrease in immunoreactive serum LH concentration without concomtant change in immunoreactive FSH. The depression of LH secretion lasts for 1 to 2 h. The circulating levels of HCG in post-partum women are not modified after intramuscular injection of Methergin. In humans as in animals and in in vitro studies, inhibition of prolactin and LH release induced by ergot drugs are likely due to both an indirect effect via the hypothalamus and to a direct effect on the pituitary cells.
 ...
PMID:Effect of methylergobasine maleate on serum gonadotrophin and prolactin in humans. 117 74

Female rats rendered "pseudopregnant" by treatment with PMS and hCG and ovariectomized rats injected with estradiol and progesterone (OVX-E2-P) were subjected to cortical spreading depression (SD). Within 7-10 min under ether anesthesia in a stereotaxic instrument a frontal craniotomy was performed and a cotton ball saturated with physiological saline (control) or 25% KCl was applied to the exposed dura, covered with dental cement and skin sutured. The animals were then placed in separate containers in an isolated room and decapitated for collection of trunk blood at 0, 15, 30, or 60 min after surgery. In PMS-hCH saline-treated control animals, prolactin levels had dropped by 15 and 30 min when compared with the zero-time values but by 60 min had increased significantly above the 30-min level. At that time (60 min), prolactin values in the KCl group were significantly lower than in the controls. Corticosterone levels were high at both 15 and 60 min in control and KCl groups. In OVX-E2-P control animals, plasma prolactin levels also rose at 60 min compared with 15- and 30-min samples and at 60 min were significantly higher than in the KCl group. In control animals, LH levels were lower at 15 and 60 min than at zero time, but they remained unchanged in the KCl group. The dato are interpreted as indicating that cortical SD suppresses the stress responses observed in saline-treated control animals.
 ...
PMID:Effects of spreading depression on stress-induced changes in plasma prolactin and LH. 118 96

The effect of a coping-ineffectiveness of coping construct and of psychoendocrine stress responses upon the outcome of in vitro fertilization treatment was investigated in 40 women. Women with a high Zung depression score, high active coping, high avoidance, and a high expression of emotion have lower pregnancy rates. The mechanisms for this personality effect are not clear, although the desensitization-stimulation process (FSH, E2 concentrations) seems to be involved. The psychoendocrinological responses to the stress of oocyte retrieval and embryo transfer are important: Women with high anticipatory state anxiety levels and high anticipatory cortisol concentrations have lower pregnancy rates. The influence of prolactin stress concentrations is unclear: Women with high prolactin concentrations seem to have more oocytes but lower fertilization rates.
 ...
PMID:Coping and the ineffectiveness of coping influence the outcome of in vitro fertilization through stress responses. 128 84

The efficacy of bromocriptine (Bromergon, Lek) was studied in a group of 21 women with premenstrual syndrome (PMS). To qualify for inclusion, the patients had to have a score of 20 or more on Casper's Analog Self-Rating Scale for Premenstrual Tension Syndrome completed during the last premenstrual week. The study was designed as a double-blind, randomized, cross-over trial introduced by a wash-out cycle. Patients received Bromergon in a daily dose of 5 mg from cycle day 10 to the onset of menstruation for two consecutive menstrual cycles, followed by two placebo cycles or vice versa. The subjects were instructed to complete the scale every three days from cycle day 3 to the onset of menstruation. A statistically significant improvement due to the administration of Bromergon was observed in symptoms associated with overreactiveness to normal prolactin levels, i.e. abdominal tension, edema, weight gain and breast tenderness. Scores on the linear analog scale and physician's assessments differed regarding psychological symptoms. The investigators observed no difference in the presence of psychic symptoms in the treatment-free period, on Bromergon therapy and during the administration of placebo. On the other hand, self-rating scores reflected an improvement in the presence of depression and irritability during Bromergon treatment. The results obtained suggest that Bromergon may be a useful agent for the treatment of somatic symptoms associated with PMS, while it seems somewhat less effective in PMS cases where psychic symptoms are the major complaint.
 ...
PMID:Bromocriptine (Bromergon, Lek) in the management of premenstrual syndrome. 129 45

Neuroendocrine and behavioral responses to a single 60-mg oral dose of the indirect serotonin agonist dl-fenfluramine were assessed in unmedicated adults with obsessive-compulsive disorder (OCD) and neuroendocrine results contrasted with those in normal control subjects. Net fenfluramine-induced prolactin release did not differ significantly between OCD patients and normal controls. Prolactin responses in the OCD group were not significantly correlated with baseline Yale-Brown Obsessive Compulsive Scale scores for either obsessions or compulsions, but were positively correlated with the baseline Hamilton Depression Scale score and Hamilton Anxiety Scale score. No clear difference in the severity of patients' obsessions or compulsions was found following challenge with fenfluramine versus placebo. Although the present study does not demonstrate a serotonergic abnormality in OCD, this may be more a reflection of limitations of the test procedures than evidence that central nervous system (CNS) serotonergic function is normal in the disorder.
 ...
PMID:Neuroendocrine and behavioral responses to challenge with the indirect serotonin agonist dl-fenfluramine in adults with obsessive-compulsive disorder. 131 64

The aims of this study were to determine whether the administration of cortisol has a significant effect on mood in patients with depression and whether the effects of cortisol on changes in plasma hormone concentrations are like those of synthetic corticosteroids. Twelve patients had major depression and one each had dysthymic disorder and a depressive adjustment disorder. Five were male and nine were female. All were in-patients. Eight normal subjects, two females and six males, were used as controls. Basal beta-endorphin concentrations were 2- to 3-fold higher in depressed patients than in control subjects, but there were no significant differences between the patient and control groups in the basal (pre-infusion) plasma concentrations of ACTH, cortisol, growth hormone or prolactin. Cortisol, but not saline infusion resulted in a significant improvement in self rated mood. Surprisingly, cortisol infusion at first increased plasma beta-endorphin concentrations. At later times after cortisol infusion, plasma beta-endorphin concentrations decreased as did the plasma concentrations of ACTH and growth hormone; prolactin levels were increased. These results show (i) that cortisol infusion raises mood significantly in major depression, (ii) that plasma beta-endorphin concentration is a potential marker of major depression (iii) that rather than blunting of corticosteroid effects, responses to cortisol may even be enhanced in depressive illness. The unexpected, initial increase in beta-endorphin stimulated by cortisol, suggests that the action of cortisol is not simply one of negative feedback inhibition, but may involve mineralocorticoid, as well as glucocorticoid receptors.
 ...
PMID:The effects of cortisol infusion upon hormone secretion from the anterior pituitary and subjective mood in depressive illness and in controls. 133 93

Immunological, neuroendocrine and psychological parameters were examined in 14 psychophysically healthy subjects and in 17 panic disorder patients before and after a 30-day course of alprazolam therapy. T lymphocyte proliferation in response to the mitogen phytohemagglutinin, lymphocyte beta-endorphin (beta-EP) concentrations, plasma ACTH, cortisol and beta-EP levels were examined in basal conditions and after corticotropin-releasing hormone (CRH) stimulation. Cortisol inhibition by dexamethasone (DST) and basal growth hormone (GH) and prolactin levels were also examined. Depression, state or trait anxiety, anticipatory anxiety, agoraphobia, simple and social phobias, severity and frequency of panic attacks were monitored by rating scales. The immune study did not reveal any significant difference between patients and controls, or any effect of alprazolam therapy. The hormonal data for the two groups were similar, except for higher than normal basal ACTH and GH plasma levels, lower than normal ratios between the ACTH and cortisol responses to CRH, and blunted DST in some patients. All the impairments improved after alprazolam therapy, in parallel with decreases in anxiety and in severity and frequency of panic attacks.
 ...
PMID:Psychoimmunoendocrine aspects of panic disorder. 133 59

Sixty-six alcoholic men who had been abstinent from alcohol for at least four weeks were assessed clinically and then investigated in terms of Thyroid-Stimulating Hormone (TSH) and prolactin responses to a Thyrotropin-Releasing Hormone (TRH) challenge. Consistent with other studies, a third of the subjects had a blunted TSH response to TRH. This blunted response was not associated with a family history of alcoholism, or current depressive symptoms, past history of depression or family history of depression. However, subjects with a blunted TSH response were more likely to have had an earlier onset of alcoholism and to have had shorter alcoholic remissions in the past.
 ...
PMID:The clinical significance of the thyrotropin-releasing hormone test in alcoholic men. 133 21

Several classes of drugs that modify serotonin (5-HT) neurotransmission are either currently used, or are being evaluated for their potential use in the treatment of anxiety, schizophrenia, and depression. 5-HT1A agonists are considered potential anxiolytics, while some atypical antipsychotics are potent 5-HT2 antagonists (and also have modest dopamine D2 affinity). Furthermore, there is a diverse group of serotonergic drugs that may be effective antidepressants. Secretion of ACTH, corticosterone/cortisol, prolactin, renin, oxytocin and vasopressin are stimulated by activation of different 5-HT receptor subtypes, while other neurotransmitter receptors also influence the secretion of these hormones. We compared the receptor binding profiles of 5-HT anxiolytics, antipsychotics and antidepressants with their endocrine effects. These comparisons could aid in understanding both the therapeutic and side effects of these drugs.
 ...
PMID:Endocrine and receptor pharmacology of serotonergic anxiolytics, antipsychotics and antidepressants. 135 27


<< Previous 1 2 3 4 5 6 7 8 9 10 Next >>