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)

Serum thyroid stimulating hormone (TSH) levels were measured in 127 patients with varying grade of chronic renal failure (CRF). Sensitive immunoradiometricassays (IRMA) were used so that small changes in TSH levels if any, could be appreciated, and to see if such alterations exhibit some relationship with those in thyroid hormone levels. Mean serum TSH levels in the patient group of 2.33 microU/ml (0.07-7.3) was significantly higher in comparison to 1.73 microU/ml (0.25-4.6) in normal subjects (p < 0.001). However, they were not significantly different when measured by radioimmunoassay (RIA) as compared to normals. Serum triiodothyronine (T3), thyroxine (T4) and free triiodothyronine (FT3) levels of 72 +/- 32 ng/dl, 7.4 +/- 2.6 micrograms/dl and 2.9 +/- 0.9 pg/ml were significantly lower than in normal subjects, whereas serum free thyroxine (FT4) showed a slight though not significant elevation. When patients were divided in three subgroups according to the degree of renal insufficiency, TSH levels showed a gradual rise with corresponding depression in their T3, FT3 and T4 levels. In 19 patients who were on hemodialysis (HD) and subsequently received successful renal transplantation, most of the thyroid function parameters returned towards the normals with TSH undergoing significant depression from their pretransplant levels as well as from normal levels. The results indicated that a slight but significant elevation in TSH levels could be revealed by sensitive IRMA in patients with CRF. Rising TSH levels with increasing renal insufficiency and its inverse relationship with T3 and T4 levels suggest maintenance of pituitary thyroid axis.(ABSTRACT TRUNCATED AT 250 WORDS)
 ...
PMID:Measurement of serum thyrotropin levels using sensitive immunoradiometricassays in patients with chronic renal failure: alterations suggesting an intact pituitary thyroid axis. 752 29

Serum concentrations of thyrotropine (TSH), thyroxine (T4), free T4 (fT4), triiodothyronine (T3) and reverse T3 (rT3) were measured 4 x during a 12-month period in 28 patients with major depressive disorder maintained on lithium prophylaxis for 4-23 years (mean = 11.8). The course of illness was carefully monitored and documented for all patients throughout a 3.5-year period. All hormones were also measured in 41 healthy controls matched for age and gender. Patients on lithium had normal serum concentrations of TSH, T4, fT4 and T3 only the levels of rT3 were elevated. The efficacy of the lithium prophylaxis was significantly correlated to the serum concentrations of T3, i.e., the higher the patients' serum levels of T3, the shorter was the overall duration of recurrences of depression within the 3.5-year period. We conclude that: (1) thyrotropine and the thyroid hormones, which are often abnormal during the first weeks or months of lithium treatment, returned to normal when lithium prophylaxis was maintained for years; (2) a possible explanation for the higher T3-serum concentrations in responders might be that lithium interacts with thyroid hormone metabolism in the CNS, leading to enhanced T3 concentrations in the tissue and to a secondary increase in the serum concentrations of T3.
 ...
PMID:The hypothalamic-pituitary-thyroid axis in patients maintained on lithium prophylaxis for years: high triiodothyronine serum concentrations are correlated to the prophylactic efficacy. 756 May 49

The therapeutic effects of lithium in mania and depression are thought to be mediated by its effects on plasma thyroid hormone (T4, T3) levels. Inasmuch as T3 affects transcription by binding with its nuclear receptors, in this study we examined whether Li+ alters T3 nuclear binding. Although plasma T3 and T4 levels were not affected, 125I-T3 uptake was decreased, and both in vivo and in vitro studies showed a significant increase in nuclear T3 binding in brain and liver tissue. This increase was shown to reflect an increase in maximal binding density. On the basis of these findings, it is proposed that Li+ exerts its action by inducing "cellular hypothyroidism." Integrating existing information on thyroid hormones and affective diseases and the effects of hypothyroidism on neurotransmitters thought to be altered in mania and depression, this hypothesis is supported and contributes to understanding of the effects of LiCl and thyroid hormones in affective diseases.
 ...
PMID:Effects of LiCl on triiodothyronine (T3) binding to nuclei from rat cerebral hemispheres. 771 73

Thyroid hormone levels were measured in 21 patients with anorexia nervosa, 15 patients with depression and 16 patients with severe depression and were compared with those in 53 normal subjects. In anorexia nervosa and severe depressed patients, serum T3, T4, fT3, fT4 and T3/T4 ratio showed significantly lower values than those in normal subjects. However there was no difference between depressed patients and normal subjects. The serum TSH levels were within normal range in all of the studied subjects. Thus, thyroid hormone levels in severe depressed patients were similar to those in anorexia nervosa and the changes were inversely related to disease conditions. The supplementation of thyroid hormones to antidepressant relieved clinical symptoms in some of the severe depressed patients. These results suggested that the changes in thyroid hormone levels in anorexia nervosa and severe depression were mainly due to impaired conversion of T4 to T3 by increased cortisol secretion through emotional stress.
 ...
PMID:[Thyroid function in patients with anorexia nervosa and depression]. 786 91

In an attempt to study "manic-depressive" affairs associated with endocrine and mental disorders, our clinical data are analyzed before and after appropriate treatment in Cushing's disease, Cushing's syndrome, hyperthyroid Graves' disease and primary hypothyroidism. Although our data do not provide definite findings on manic-depressive affairs associated with Cushing's disease and syndrome, review data by others indicated a high incidence of depression under untreated condition and its disappearance after appropriate treatment. In contrast, patients with adrenocortical insufficiency did have a depression but this was cleared after supplemental therapy. In hyperthyroid Graves' disease, a number of emotional and mental instability and irritability were noticed before the treatment, but these abnormalities all disappeared after appropriate treatment for 3-6 months. In contrast, patients with primary hypothyroidism did show lethargy and apathy, and these abnormalities disappeared after appropriate treatment. From the data accumulated, it is concluded that adrenal steroid and thyroid hormone do affect the functions of nervous system and, as a result, cause a number of clinical symptoms. The exact biochemical processes underlying these abnormalities are not known and remains for further investigations.
 ...
PMID:[Manic-depressive symptom associated with endocrine and metabolic disorders]. 800 7

The influence of prolonged psychological stress on hormonal secretion was investigated in 84 East Germany refugees suffering from psychiatric disorders within 6 weeks of their arrival in West Berlin shortly before or after the fall of the Berlin Wall. Before leaving the German Democratic Republic, these patients had already experienced prolonged stress, which continued after migration. In most cases, the diagnosis was anxious-depressive syndrome with vegetative complaints and symptoms of increased arousal. Their formal DSM-III-R diagnoses (American Psychiatric Association, 1987) included adjustment disorders, depressive disorders, and anxiety disorders (the latter including posttraumatic stress disorder). Serum levels of thyroid stimulating hormone (TSH) and thyroid hormones (thyroxine, free thyroxine, triiodothyronine, and reverse triiodothyronine) were measured and compared with those of 20 healthy control subjects. TSH and all thyroid hormone concentrations were significantly reduced in the patient group. Fifty-two of the patients (62%) were in the hypothyroid range but did not show any clinical signs of hypothyroidism. These disturbances in hormonal secretion were not correlated to any psychiatric diagnosis or to the severity of acute or chronic stress. The marked abnormalities in the hypothalamic-pituitary-thyroid axis seen in these refugees differ from those reported in depression and would seem to reflect severe chronic stress rather than specific psychiatric disorders. The underlying neurochemical mechanisms remain to be investigated.
 ...
PMID:Psychological and endocrine abnormalities in refugees from East Germany: Part I. Prolonged stress, psychopathology, and hypothalamic-pituitary-thyroid axis activity. 819 71

A 63-year-old female exhibited primary hypothyroidism, both upon clinical examination and laboratory tests. A full neuropsychological exam and repeated, multiple measures of affect, memory, concentration, and problem solving were used to establish baselines prior to treatment and to assess change during the first 7 months of thyroid hormone replacement therapy. Additionally, thyroid hormone and metabolites T3, T4, TSH, and T3 (resin uptake) were regularly assessed. Results indicated that establishing stable baselines before treatment, long-term repeated assessments during treatment, and the use of control subjects are crucial to understanding the neuropsychological changes associated with hypothyroidism. Certain measures of depression, anxiety, attention, and concentration changed from severely impaired to normal levels following an explanation of the diagnosis but before actual treatment. Baseline memory functions were impaired before treatment and remained impaired relative to normals during replacement therapy in spite of improvement with repeated testing. However, replacement therapy may have arrested the progression of memory deterioration as no further decline was evident at a 7-month follow-up. Our data suggest that the memory changes associated with primary hypothyroidism may not be reversed by thyroid hormone replacement therapy.
 ...
PMID:Memory, mood and measurement in hypothyroidism. 827 38

Pharmacology can contribute in four ways to our understanding and to the management of resistant depression: 1) Dosage: some antidepressants have an inverted-U dose-response curve, i.e. the response disappears when dosage is increased. In man, dose-response relationships are not well established because the curves are obtained with groups of patients and they reflect an overall mean rather than the reality of each individual patient. 2) Secondary regulatory adaptive mechanism such as: down regulation of beta, 5-HT2, alpha-2 receptors--increased reactivity of 5-HT1A, alpha-1 and dopaminergic systems. Defective development of these mechanisms is thought to originate resistance in certain cases, which could therefore be corrected more or less specifically by adding thyroid hormone, lithium, an alpha-2 agonist or even by switching to a 5-HT1A agonist or a dopaminergic drug. 3) Biological resistance factors: it has been shown in the rat that hypothyroidism, diabetes, weight loss cause a decrease in beta-adrenergic system reactivity, and therefore a resistance to noradrenergic antidepressants. 4) Co-prescription: the efficacy of noradrenergic antidepressants is known to involve the activation of beta-adrenergic receptors. Animal studies have shown that the co-prescription of a beta-blocker nullifies this efficacy. Benzodiazepines decrease serotonergic and noradrenergic neuronal activity: animal studies have shown that they antagonize most antidepressants. What happens in depressed humans who are often co-prescribed these drugs? I would like to share with you a few data from experimental pharmacology which may help us to think differently, not when faced to a patient with resistant depression, but when confronted with the failure of a well conducted antidepressant treatment.(ABSTRACT TRUNCATED AT 250 WORDS)
 ...
PMID:[Contributions of pharmacology in the treatment of resistance to antidepressive agents]. 828 6

Thirty-nine patients with major depression were studied to determine the differential effects of desipramine (DMI) and fluoxetine (FLU) on thyroid hormones. Twenty-six percent showed some abnormality in baseline thyroid hormone levels. There were no demonstrable differences for any of the thyroid indices from baseline to the 3- or 6-week samples for the total group or for either drug by repeated measures analysis of variance. There was a significant group by time interaction for total thyroxine (TT4) between the drug treatment groups, which was caused by a small but significant increase in TT4 in the DMI sample. Correlations were performed between the change in hormones over the 6 week period and treatment response. There was a significant association between a decline in triiodothyronine (T3) levels and response to FLU but not DMI. The implications of these findings for the pathophysiology of depression and antidepressant drug mechanisms are discussed.
 ...
PMID:The effects of antidepressants on the thyroid axis in depression. 843

Ten HIV-positive patients were given thyroid hormone in pharmacological doses. Two patients that had CD4 counts of 200 or higher responded well with gain in weight, energy, endurance and well-being within 6 months. During the same period, their CD4 counts rose to within normal limits and remained there. One patient has been well for 3 years and the other for 1 year. Six other patients with counts below 200 have had variable clinical improvements during the first 6 months but no change in CD4 counts. Thyroid therapy in pharmacological doses helps most patients with symptoms of fatigue or depression. At the same time, it may retard or prevent the progression from HIV infection to AIDS.
 ...
PMID:Thyroid therapy in HIV-infected patients. 853 32


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