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

Fifty pregnant women (25 anaemic and 25 non-anaemic) and 20 non pregnant women (10 anaemic and 10 non-anaemic) were studied. All pregnant women delivered full term (37-41 wk) singleton babies. Maternal blood lymphocyte stimulation indices (SI) at 0 and 24 h were lower in anaemic and non-anaemic pregnant women, compared to anaemic and non-anaemic non-pregnant women. This difference was more marked in anaemic pregnant women, as compared to non pregnant anaemic women at 0 and 24 h respectively. The SI of maternal and cord blood lymphocytes were significantly lower in severely anaemic mothers both at 0 and 24 h and in those with maternal serum iron levels below 50 micrograms/dl or maternal per cent transferrin saturation was below 15 per cent. The anaemic mothers and their offspring were found to have significantly lower blastogenic response to PHA added at 24 h indicating depression of T-suppressor cell function.
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PMID:Cellular immunity status in anaemia in pregnancy. 207 Nov 77

Children with malarial infection, due to P. Vivax and P. falciparum, were tested for cell mediated immunity (CMI) by lymphocyte proliferative response to mitogens PHA (phytohaemagglutinin) and PWM (poke weed mitogen) and antigen PPD (purified protein derivative). This was done during the period of parasitemia and after treatment, and compared to 19 normal matched controls. There was no significant difference between the patients and the control group with regard to PHA (patients 57.4 +/- 50.5; controls 61.3 +/- 54.9); PWM (patients 27.4 +/- 19.9, controls 29.9 +/- 24.5); PPD (patients 2.2 +/- 1.2, controls 1.9 +/- 1.4). There was also no significant difference in the lymphocyte responses during the period of parasitemia and after treatment. Hence, there does not seem to be any depression of CMI as shown by lymphocyte proliferative responses during childhood malaria.
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PMID:Cell mediated immunity in childhood malaria. 224 18

Measurements were made of cellular immune system parameters in a group of healthy medical students. On the basis of psychosocial stress encountered during a five-day topic-centered self-awareness course, we investigated modulation in immunity in relation to personality characteristics. 6 days before the beginning of the seminar personality profiles were drawn and blood samples taken. Further immunological measurements were made on day four of the seminar and three weeks after its conclusion. On the fourth day of the seminar we observed throughout the group higher lymphocyte and suppressor/cytotoxic T lymphocyte counts in comparison with counts one week earlier, and likewise a heightened responsiveness to PHA- and IL-2 stimulation. The T lymphocyte counts had dropped. In subjects with a higher need for succorance/nurturance, the depression of the immune system was manifested in a drop in the helper/inducer T lymphocyte counts, and in the more achievement- and order-oriented subjects in a downregulation as observed by higher suppressor/cytotoxic T lymphocyte counts. Our results show that under psychosocial stress, healthy people experience on the one hand an activation of the immune system, and on the other hand an immunodepression bearing a specific relation to personality characteristics.
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PMID:[Selective effect of personality markers and psychosocial stress on T lymphocyte subpopulations]. 252 32

The study attempted to evaluate the effects of anesthesia and of surgical interventions on certain humoral and cellular components of the mechanism of specific immunity. A total of 64 patients suffering with benign and malignant affections of the stomach and of the colon that had underwent resections under general anesthesia of the hypnoanalgesia type were followed at three stages of their evolution--before surgery, at 24 hours after surgery, and 7 days after surgery. Blood samples were obtained for performing the following tests: count of lymphocytes, blastic transformations test, stimulated control (with PHA and PWM), rosetting test, total number of eosinophils, high affinity eosinophils, and other tests. Electrophoretic fractions, total serum proteins, and dosage of IgG, IgM, and IgA immunoglobulins were also measured. A total of 24 tests have been performed. The patients were investigated both globally and according to sex, type of affection (malignant, or other), and by age. The results indicated a depression of the majority of the results of tests excepting those which detect precursor B, and T-helper cells, which showed a stimulation. Differentiated behaviours were also noted in the various groups with regard to the intensity of the reaction, although not with its direction.
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PMID:[Changes in cellular and humoral immunologic mechanisms in the postoperative period]. 252 84

Humoral and cell mediated immune responses were studied in control, infected and immunized-infected mice at different time intervals. The levels of antiporin antibodies were found to be higher throughout the study period in immunized-infected group in which 87.5% protection was observed by mouse potency test. A significant increase in stimulation index of lymphocyte blast transformation as well as delayed type hypersensitivity response was observed in the same group as compared to infected and control group when porins were used as antigens. Using nonspecific mitogens like PHA and Con A the lymphocyte proliferation was maximum in control group whereas a significant depression was observed in infected mice. It is indicated from this study that porins are excellent antigens interacting efficiently with both arms of the host immune systems which could play a role in providing protection against the disease.
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PMID:Humoral and cell mediated immune responses to porins of Salmonella typhi. 254 61

The influence of Ly146032, a new acidic lipopeptide, on chemotaxis, luminol-dependent chemiluminescence of human polymorphonuclear leukocytes (PMN) and phythemagglutinin induced lymphocyte transformation of murine cells was investigated. At therapeutic range there was no remarkable effect on the parameters tested. Incubation with more than 20 mg/l Ly146032 was followed by depression of chemiluminescence, whilst transformation of maximally PHA stimulated lymphocytes was suppressed by more than 32 mg/l Ly146032.
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PMID:Influence of Ly146032 on chemotaxis, chemiluminescence of PMN and lymphocyte transformation in vitro. 255 38

The role of T lymphocytes in the pathogenesis of experimental autoimmune thyroiditis in mice is well established while the role of B lymphocytes is unclear. Mice with thyroid lesions have thyroglobulin antibodies whereas these antibodies can occur in mice immunized with Tg that do not develop thyroid lesions. To determine whether thyroglobulin antibodies are necessary for the development of the thyroid infiltrates with mononuclear cells, which are characteristic for experimental autoimmune thyroiditis, AKR mice chronically treated from birth with goat anti-mouse IgM antibodies were immunized with mouse thyroglobulin in Freund's complete adjuvant when they were 7 weeks old. Control mice, similarly immunized, were chronically injected from birth with normal goat gamma-globulin. Three weeks after immunization, all mice were sacrificed, thyroglobulin antibodies in the serum were measured by hemagglutination assay and enzyme-linked immunosorbent assay, and thyroid pathology was assessed. The serum concentration of IgG and IgM, the percentage of B and T lymphocytes in the spleen (flow cytometry), and the in vitro proliferative response of spleen lymphocytes to stimulation by PHA, LPS, and Tg were also measured. All mice treated with anti-IgM antibodies did not have detectable thyroglobulin antibodies but 63% of these mice and 88% of control mice (all of which had thyroglobulin antibodies) had thyroid lesions. Mice treated with anti-IgM antibodies that did not have thyroid lesions had a more pronounced depression of B lymphocytes than similarly treated mice that had thyroid lesions. These experiments suggest that thyroglobulin antibodies are not necessary for the development of thyroid infiltrates with mononuclear cells. B lymphocytes could still participate in the production of experimental autoimmune thyroiditis by presenting thyroglobulin to helper T lymphocytes.
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PMID:Experimental autoimmune thyroiditis in mice chronically treated from birth with anti-IgM antibodies. 278 67

The proliferative response of human lymphocytes to PHA in vitro is affected by X-irradiation. Dose-related changes of mitogenic stimulation of irradiated lymphocytes were compared in two culture systems--cultivation of separated lymphocytes and cultivation of whole blood. In whole blood cultures, the proliferative activity of stimulated lymphocytes was markedly and reproducibly depressed by irradiation. The values of mitogenic response within a dose range from 0 to 2.5 Gy could be fitted with high correlation by an exponential curve. In a modified test where the mitogenic stimulus was given after 24 h delay, depression of the response was even more pronounced. Radiosensitivity of human lymphocytes as determined by means of mitogenic stimulation in whole blood cultures appears to be a characteristic individual feature. The mean D37 value of the radiation-induced depression of mitogenic response in a group of 20 healthy donors was 2.5 Gy in the standard test and 2.0 Gy in the test with a delayed mitogenic stimulus. In contrast, the data obtained from separated lymphocyte cultures were characterized by a high degree of the test-to-test variability and by much lower radiosensitivity. The possible mechanisms of these distinctive manifestations of the same primary radiation injury are discussed.
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PMID:Manifestation of radiation injury of human lymphocytes using PHA mitogenic stimulation in different culture systems. 295 May 34

Streptozotocin-diabetic isogenous Brown-Norway (BN) rats received heterotopic Wistar-Furth (WF X BN) F1 heart transplants. The functional graft survival time after different duration of diabetes and during insulin-treated diabetes was recorded. Some diabetic rats were challenged with sheep red cells, and their spleens were used in PHA stimulation and plaque-forming assays. Prolongation in heart transplant survival was found to be independent of the duration of diabetes. The prolongation disappeared promptly when insulin was administered to the diabetic rats. A depression of cellular immunoresponsiveness as measured by PHA stimulation assay was recorded during diabetes. Valid results were not obtained in the plaque-forming assay.
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PMID:The immunosuppressive effect of streptozotocin-induced diabetes in rats. 295 May 77

The changes occurring in the T-cell subsets during acute symptomatic measles were examined in ten malnourished and 18 well nourished hospitalized children younger than 5 years of age (median age 14 months). A significant decrease in total lymphocyte count was observed, which was due mainly to a decrease in helper/inducer T lymphocytes, whereas the suppressor/cytotoxic T-lymphocyte subset remained unchanged. Consequently, helper/suppressor ratio decreased significantly during the acute phase of the disease. A reduced response to mitogens (PHA, Con A, PWM) was also observed. Malnourished infants showed a trend toward a deeper depression in both helper and suppressor T cells during the acute phase than well nourished children, whereas the helper/suppressor ratio remained similar in the two groups.
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PMID:Cellular immunity and T-lymphocyte subsets in young children with acute measles. 295 61


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