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Query: UMLS:C0011570 (depression)
 172,036 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Literature on the association of oral contraceptives (OCs) with psychological disturbances is reviewed. The data from available clinical studies indicate that perhaps 10-40% of OC users may experience mild to moderate depression syndromes characterized by tiredness, lethargy, sadness and, in some cases, loss of libido. These psychological alterations may involve numerous mechanisms including changes in folate, pyridoxine, and Vitamin-B12 metabolism, and related effects on biogenic amine metabolism. The interaction of these impaired mechanisms may disturb usual coping functions and psychological defenses by altered central nervous system activity.
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PMID:Evaluation of emotional reactions to oral contraceptive use. 79 96

Forty-two gastrectomized patients (mean age 56 years) with a serum B12 level less than 200 pg/ml were studied by psychological testing and electroencephalography. A total of 50 per cent exhibited mild to moderate or more severe intellectual impairment, judging by the history and psychological testing. EEG abnormalities were found, mainly in the form of reduced dominant activity, in 48 per cent. The results of psychological testing were in accurate conformity with the findings of dementia due to other reasons. The characteristic findings were depression and lability of affect, with a high frequency of suicidal attempts (20 per cent). We interpret the cerebral abnormalities as a result of vitamin B12 deficiency.
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PMID:Various degrees of dementia in a selected group of gastrectomized patients with low serum B12. 85 44

The neutrophil giant metamyelocytes present in vitamin B12-and folate-deficient patients were studied using the techniques of electron microscopy and electron microscope autoradiography. The ultrastructural features of the cytoplasm of a proportion of these cells resembled those of promyelocytes and myelocytes, particularly with respect to the types of neutrophil granules present. This finding suggests that the giant metamyelocytes result from an abnormal type of development in promyelocytes and myelocytes which have been arrested or retarded in their progress through the cell cycle. The hypothesis that giant metamyelocytes eventually die within the marrow was supported by the observations that a significant proportion of these cells contain intracytoplasmic autophagic vacuoles, that some giant metamyelocytes suffer from a marked depression of RNA and protein synthesis and that degenerating giant metamyelocytes can be recognized within the cytoplasm of some bone marrow macrophages.
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PMID:An investigation into the development and fate of neutrophil giant metamyelocytes using the techniques of electron microscopy and high resolution autoradiography. 87 13

Food intake was measured in 22 obese patients before and after jejunioleostomy for obesity. Most of the weight loss could be accounted for by the observed reduction of caloric intake. Malabsorption was also present as indicated by increased loss of fat in the stools, and decreased absorption of D-xylose and vitamin B12. A dislike for sweet tastes developed after surgery in most patients. Preferences for concentrated solutions of sucrose and glucose were reduced after patients showed a depression of food intake by a 440-calorie preload which had not been detected before surgery. These studies show a decrease in food intake after intestinal bypass surgery and suggest a role for taste or other gastrointestinal factors in regulating food intake.
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PMID:Intestinal bypass surgery for obesity decreases food intake and taste preferences. 93 32

Most women who use oral contraceptives should take daily vitamin supplements in dosages that are carefully regulated to avoid excesses of particular vitamins. Requirements for riboflavin, thiamine, B12, and B6 may be increased by the use of oral contraceptives, whereas niacin requirements may be reduced. Fat-soluble vitamins are also influenced by oral contraceptives. There is evidence of increases in plasma Vitamin-A and decreases in plasma tocopherols in users of oral contraceptives; Vitamin-D, Vitamin-K, and biotin, however, have not been shown to be affected. Normalization of vitamin status can be effected fairly quickly by use of a daily multivitamin. Desirable doses are as follows: ascorbic acid, 400-500 mg; ribovlavin, 10 mg; B6, 5 mg; B12, 4 mcg; and d-alpha-tocopherol, 10 mg; optimal thiamine intake is not known . Clinical signs of hypovitaminosis include depression, susceptibility to infections, and skin signs, all of which were found in users of oral contraceptives in an epidemiological survey of 46,000 women in Great Britain. Adverse psychological, dermatological, and hematological side effects of oral contraceptives have also responded to vitamin therapy. Routine prophylactic prescription of carefully formulated supplemental vitamin mixtures is recommended.
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PMID:Letter: Oral contraceptives and vitamin requirements. 114 35

A summary of the effects of contraceptive pills on vitamins in the b lood is presented. The significant increase of Vitamin-A in the plasma of contraceptive users is believed to be a result of the increase of bet alipoprotein, which binds chiefly to Vitamin-A. Although high concentrations of Vitamin-A have caused teratogenicity in test animals, the increase found in humans using contraceptive pills is not high enough to cause risk. A lowering of Vitamin-B6 (pyridoxin) levels has occurred with the use of contraceptive pills. This can cause alteration in the metabolism of tryptophan, which could cause depression in pill users. The lack of pyridoxine can also increase the production of xanthuric acid which binds with insulin, resulting in a decreased glucose tolerance. A decrease in folic acid in pill users has also been observed, caused by some effect of the pill on the folate deconjugate. The Vitamin-B12 level is also lowered for unascertainable reasons related to the decrease in folic acid. No anemia occurs in spite of the lowered Vitamin-B complex levels in the blood. A lack in Vitamin-C in users of pills containing estrogens is possibly effected by a corresponding increase between estrogens and ceruloplasmin, a protein active in the oxidation of ascorbic acid. This lack of Vitamin-C has had no clinical significance thus far.
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PMID:[P-pills and vitamins]. 114 66

The state of vitamin B12-deficiency in rats was evaluated by determination of hepatic vitamin B12-dependent enzyme activities after the animals had fed on a vitamin B12-deficient soybean protein diet for 150 days. The effect of vitamin B12-deficiency on testicular tissue was also studied by morphological observations. Growth of vitamin B12-deficient rats was retarded and marked increase in urinary methylmalonic acid was observed. Vitamin B12 contents in the organs were depressed distinctly by the deficiency, especially in testes, vitamin B12 content decreased to 2.5 ng/g. Hepatic methionine synthase and methylmalonyl-CoA mutase activities showed striking depression to 5% of the control rats and extreme vitamin B12-deficiency was confirmed. Testes weight also showed marked decrease together with their relative weight per 100 g body weight. Morphological observations of testes of vitamin B12-deficient rats revealed atrophy of the seminiferous tubules and aplasia of sperms and spermatids. The above results proved that vitamin B12-deficiency affected rat testes, and suggested that the rat could be the animal model for elucidation of the mechanism of B12 action on testicular functions.
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PMID:Effects of vitamin B12-deficiency on testes tissue in rats. 129 37

This was a 4-week randomized placebo-controlled double-blind study to assess augmentation of open tricyclic antidepressant treatment with 10 mg each of vitamins B1, B2, and B6 in 14 geriatric inpatients with depression. The active vitamin group demonstrated significantly better B2 and B6 status on enzyme activity coefficients and trends toward greater improvement in scores on ratings of depression and congnitive function, as well as in serum nortriptyline levels compared with placebo-treated subjects (Ss). Without specific supplementation, B12 levels increased in Ss receiving B1/B2/B6 and decreased in placebo Ss. These findings offer preliminary support for further investigation of B complex vitamin augmentation in the treatment of geriatric depression.
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PMID:Brief communication. Vitamin B1, B2, and B6 augmentation of tricyclic antidepressant treatment in geriatric depression with cognitive dysfunction. 157 91

Jejunoileal bypass operation was originally done to promote weight loss for treatment of morbid obesity. We used such a model to determine if dietary vitamin absorption is compromised by such an operation. Six rats were subjected to a jejunoileal bypass, 6 control rats were pair-fed to bypassed rats; and 6 were fed ad libitum. Vitamin content of folic, B6, riboflavin, nicotinate, pantothenate, thiamin, biotin, B12, vitamins A, E, and carotene in blood and liver was determined after 8 postoperative weeks. Aside from riboflavin, blood vitamin levels were significantly depressed in bypassed rats. The deepest depression was seen for B12, carotene and vitamin E. Liver vitamin stores of folate, riboflavin, thiamin, B12, clearly were significantly depressed in the bypassed animals compared to the pair-fed and ad libitum-fed controls. This model can serve for rapidly studying micronutrient depletion due to malabsorption without dietary manipulation or antibiotics for gut sterilization.
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PMID:A jejunoileal bypass rat model for rapid study of the effects of vitamin malabsorption. 158 7

Surveys of psychiatric population had previously shown a high incidence of patients with low serum vitamin B12. A variety of psychiatric syndromes have been described, ranging from mild disturbance in mood state like depression to maniacal excitement; psychotic conditions like paranoid states and schizophrenia; and cognitive dysfunctions such as memory defect, delirium and dementia. A case of a 67-year-old Chinese lady suffering from pernicious anaemia, but presenting with prominent paranoid delusions is reported. Treatment with cyanocobalamine and anti-psychotic medication led to prompt resolution of her psychotic experience. Subsequently she developed a transient depressive syndrome which also responded well to a short course of antidepressant.
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PMID:Psychiatric syndromes in pernicious anaemia--a case report. 159 18


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