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Results for “immune profiling”

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At least 73 records · Page 4Linked to original sources
PubMedDate not supplied

Immune profiles in hepatosplenic schistosomiasis mansoni after surgical treatments.

The hepatosplenic form of schistosomiasis mansoni sometimes induces bleeding in oesophageal varices that requires surgical treatment. Although splenectomy is often necessary these patients rarely present with septic events, a finding that may be related to changes in the immunological system. To investigate the immunological profiles of patients with schistosomiasis, we studied the B- and T-lymphocyte counts and the immunoglobulin A, G and M (IgA, IgG and IgM) levels in patients treated surgically and in those who were not operated on. Patients who underwent distal splenorenal shunt, preserving the spleen, showed significantly increased T-lymphocyte counts compared with healthy controls. The IgM and IgG levels were significantly increased compared with the healthy controls in patients submitted to partial and total splenectomy, respectively. The IgM level also tended to increase in patients who were not operated on compared with the controls. These results suggest that chronic schistosomiasis may influence the immune system.

Adolescent↗
PubMed1988

Antibodies and immune profiles of individuals occupationally exposed to formaldehyde: six case reports.

Six patients with multiple subjective health complaints, which have been correlated with chronic exposure to formaldehyde during the course of their education and occupations, were tested for the existence of antibodies (IgE, IgM, and IgG) to formaldehyde (F) conjugated to human serum albumin (F-HSA). In addition, the percentage and absolute numbers of peripheral lymphocyte subpopulations as determined by surface markers were investigated. Antibody titers to F-HSA were present as follows: IgE (2 patients), IgM (3 of 4 tested patients), and IgG (5 patients). Analysis of lymphocyte subpopulations showed T-helper/suppressor (H/S) ratios ranging from 0.8 to 3.3. All 6 patients had elevated Tal cells (antigen memory cells), whereas interleuken 2 receptor positive cells were within expected values. Following formaldehyde exposure, 5 of the patients complained of an initial flulike illness from which they have not completely recovered. The sixth individual had a history of recurrent respiratory infections and surgical removal of hyperplastic ethmoid sinus tissue. The common occurrence of anti-F-HSA antibodies, flulike illness, and Tal cells are interpreted as suggestive of a chronic antigenic stimulation of the immune system in these 6 patients. Further immunological work-up of additional subjects and immune parameters with similar history of formaldehyde exposure and subjective health complaints is warranted.

Adult↗
PubMed2004

Documentation of immune profile of microglia through cell surface marker study in glioma model primed by a novel cell surface glycopeptide T11TS/SLFA-3.

STATEMENT OF THE PROBLEM: The sheep erythrocyte membrane glycoprotein T11TS/SLFA-3 can form a ligand-receptor complex with CD2 present on immunocyte and exert stimuli for activation and proliferation. Regression of brain tumor with the application of T11TS indicates the probable role of microglia, the chief immunomodulatory cell within the brain compartment. In the present study microglial activation and immunophenotypic modulation were assessed in T11TS treated brain tumor-bearing animal models. Rat glioma models induced by chemical carcinogen ENU were treated with three consecutive doses of T11TS. Microglial cells from brain were isolated and assessed through E-rosette formation, SEM and FACS for CD2, MHC class II, CD25, and CD4. The preliminary indication of presence of CD2 on microglia through E-rosette formation was confirmed by SEM and FACS. MHC class II and CD2 single and double positive subpopulations exist, and their expression is also modulated in different doses of T11TS. A general trend of highest receptor saturation and microglial activation, measured through the activation marker CD25 and CD4 expression, was observed in 2nd dose of T11TS administration, which was then dampened via a complex immune feedback mechanism in the 3rd dose.

Alkylating Agents↗
PubMedDate not supplied

Immune profile of women experiencing recurrent spontaneous abortions of unknown aetiology.

Immunological and immunogenetic investigations are described in a group of 28 women with a history of unexplained recurrent (greater than or equal to 3 consecutive) spontaneous abortions (RSA). Compared with female blood donor controls, recurrent aborters had significantly elevated mean serum complement C4 (p less than 0.05), but not C3, levels. Immunoglobulin levels and T4:T8 ratios showed a similar distribution to the controls. Mixed lymphocyte reactivities to partners' lymphocytes were low in some of the patients, but hyporesponsiveness correlated well with husband-wife HLA-DR compatibility. No individual HLA specificity was significantly increased in the RSA patients, but the combination A3, B7, DR2 was common (p less than 0.02), and general HLA antigen sharing with partners was significantly increased (p less than 0.004) relative to obstetrically normal couples. RSA women who shared two or more HLA antigens with spouses had higher mean serum immunoglobulin concentrations, which for IgM reached statistical significance (p less than 0.05).

Abortion, Habitual↗
PubMedDate not supplied

Immune profile of infectious bursal disease. III. Effect of infectious bursal disease virus on the lymphocyte responses to phytomitogens and on mixed lymphocyte reaction of chickens.

A whole-blood-culture technique was used to sequentially evaluated peripheral blood lymphocyte responses to phytohemagglutinin (PHA) and concanavalin A (Con A) of normal chickens and chickens infected at 1 day or 3 weeks of age with infectious bursal disease virus (IBDV). This method had numerous advantages over the more conventional techniques. A comparative study was made on the percentage of inhibition of responses of peripheral blood lymphocytes to PHA and Con A of 1-day- and 3-week-old IBDV-infected chickens. In both groups, there was a minimum inhibition between 3 and 4 weeks postinfection (PI) and a maximum inhibition at 6 weeks PI. A one-way mixed lymphocyte reaction (MLR) was performed using mitomycin-C-treated cells as stimulator cells obtained from chickens of genetically different strains. Lymphocytes from the experimental birds (control, 1-day-infected, and 3-week-infected groups) were used as the responder cells. The results showed that MLR response of the IBDV-infected chickens was significantly reduced compared with those of the uninfected controls. The degree of lowered response was much more severe in chickens infected at 1 day of age than in those infected at 3 weeks of age.

Animals↗
PubMed2002

[Different immune profiles according to the immunological and clinical progression in vertically HIV-infected children].

BACKGROUND: Our goal was to evaluate immunologic profile differences of HIV-infected children on antiretroviral treatment (ART). PATIENTS AND METHODDS: We studied 23 HIV-vertically infected children: a) N-A1 group: 10 HIV-infected children in A1 category; b) N-B2 group: 6 HIV-infected children in B2 category, and c) N-C3 group: 7 HIV-infected children in C3 category. We also studied 13 healthy age-matched HIV-negative children as controls. Cell proliferation was evaluated by incorporation of [3H]-Thymidine. The cytokine production in culture was quantified using commercially available specific ELISA assays. T-cell subsets were determined by flow cytometry. RESULTS: Stimulation indexes of PHA, PWM, and anti-CD3+ anti-CD28 in N-A1 group were higher than in N-C3 group. In unstimulated PBMC, TNF-alpha production of HIV-infected children was higher than the control group (p < 0.05). However, in stimulated PBMC, TNF-alpha production in N-B2 and N-C3 groups was lower than the control group (p < 0.05). In HIV-infected children, CD8+ CD45RA+ CD62L+ T-cells were significantly lower (p < 0.01) and CD8+ CD45RO+ T-cells were higher (p < 0.05) than the control group. Moreover, in NA-1 group, CD4+ CD45RA+ CD62L+ T-cells were higher, and CD4+ CD45RO+ and CD8+ CD45RO+ T-cells were lower, than in N-B2 and N-C3 groups (p < 0.05). On the other hand, CD45RO+, CD45RO+ CD38+, HLA-DR+, CD38+ HLA-DR+ and CD38+ CD4+ and CD8+ T-cells were higher in N-C3 group than the N-A1 and control groups, except for CD4+ CD38+ T-cells. Activated CD8+ T-cells in N-A1 group were higher than in control group (p < 0.01). CONCLUSION: Our data demonstrate that in spite of ART, there still remain important differences in the immunologic status of HIV-infected children depending on the HIV-infection stage.

CD4-CD8 Ratio↗
PubMed2004

[A change of immune profile of patients with schizophrenia during treatment].

Cellular and humoral immunological parameters have been studied in 59 schizophrenic patients and 38 healthy controls. Immunological indices (CIC, autoantibodies to cardiolipin) were found to be significantly elevated in patients in the acute disease stage before the treatment. After olanzapin therapy, a level of these parameters decreased and did not differ from that of controls. In patients, irrespective of clinical condition and treatment, functional activity of immunocompetent cells (phagocyte activity of neutrophils and monocytes, cytotoxic activity of lymphocytes natural killers, interleukin-2, interleukin-10 and gamma-interferon production), was significantly lower both before the treatment as after therapy, i.e. did not change during the whole study (28 weeks). In responders, a level of IL-1B production was higher than in controls before and during the treatment. In non-responders, it was similar to that in controls before the therapy, and increased during the treatment to a higher level.

Acute Disease↗
PubMed2000

Immune profile and thyroid function in patients with rheumatoid arthritis.

Thyroid autoantibodies and thyroid function were studied in 175 patients with rheumatoid arthritis (ARA criteria, 1987). The study included 149 women and 26 men aged (54.7 +/- 13.1) all treated in the Clinic of Rheumatology, Higher Medical Institute, Plovdiv. A control group comprising 72 healthy subjects (aged 51.2 +/- 3.2) was used. Rheumatoid factor (RF) (latex agglutination test and Waaler-Rose test), antithyroglobulin (TAT) and antimicrosomal antibodies (MAT), thyroid stimulating hormone (TSH) and the free fraction of thyroxine (FT4) were measured. 69.7% of all patients tested positive for RF by the latex test and 64.5% by the Waaler-Rose test. TAT was found in 55 (31.4%), MAT in 26 (14.8%) from all the examined, which is significantly greater in comparison with the controls (p < 0.05). The thyroid gland was in a euthyroid state in most of the RA patients although MAT and/or TAT were detected in them. The results suggest existence of two autoimmune diseases - rheumatoid arthritis and Hashimoto's thyroiditis and raise the question of whether they are not manifestations of a single autoimmune disease with different body organ localisation.

Adult↗
PubMed1978

[Immune profile in melanoma patients. I. PHA--stimulation of circulating lymphocytes and number of T- and B-lymphocytes (author's transl)].

20 patients with malignant melanoma in clinical stage I and II and 10 controls were examined by means of the PHA-lymphocyte-stimulation-test as by the sheep red cell rosette formation for T-cells and by the mouse red cell rosette formation for B-cells at the beginning of a non-specific immunotherapy with BCG. Mean values of both the PHA stimulation indices and the circulating T-cells and B-cells did not show any significant differences in patients with malignant melanoma compared to the control group. The relatively wide range of values was striking, especially in patients with malignant melanoma in clinical stage II. Thus cross-section studies concerning the immunology of patients with malignant melanoma are thought to be less evident for the clinician than immunologic studies of the course of disease in the individual patient.

B-Lymphocytes↗
PubMed1979

[Immune profil in melanoma patients. III. Behavior of immunglobulins (IgG, IgA, IgM) and of whole complement in serum at the beginning and during BCG-therapy (author's transl)].

The levels of immunoglobulins (IgG, IgA and IgM) and of whole complement were measured in blood serum of 41 patients with malignant melanoma of clinical stage I to III after maximum tumour resection. In all three stages no differences to the normal could be obtained except for IgG demonstrating a rising tendency without statistic significance in patients of stage III. The level of whole complement was likewise normal in patients with the clinical stage I and II. A significant rise of the complement was observed in patients with clinical stage III in the last period of the disease. After one year of nonspecific active immunotherapy with BCG in patients of stages I and II no changes of immunoglobulins could be found. The whole complement showed a rising trend to the upper limit of the normal. The results were discussed in view of the present literature.

Adult↗
PubMedDate not supplied

The effect of intravenous infusion of Corynebacterium parvum on an immune profile of women with breast cancer.

An immunological profile has been measured in 21 patients with advanced breast cancer who were treated with C. parvum (Wellcome strain CN6134). Thirteen patients received a single i.v. dose of 15 mg of C. parvum and 8 received 4 mg i.v. on 5 successive days. The "profile" was recorded before and 7-10 days after treatment and included measurement of total white count, absolute lymphocyte and monocyte counts, PHA response, B and T cell percentages. DNCB and Mantoux skin tests, immunoglobulin classes G, A, M and E and spleen size. Most patients showed a rise in white count, due largely to a polymorph leucocytosis, but there was no consistent change in any of the immunological variables recorded. IgG levels increased significantly following the single injection but not after the 5-day course; suggesting the possibility of acquired immunological tolerance. These results fail to demonstrate a consistent effect of C. parvum on either T-lymphocyte dependent function or on the spleen size, properties well documented in the experimental animal.

Breast Neoplasms↗
PubMedDate not supplied

Immune profile of infectious bursal disease: I. Effect of infectious bursal disease virus on peripheral blood T and B lymphocytes of chickens.

A comparison was made of absolute numbers of peripheral blood B and T lymphocytes, as defined by the anti-bursal and anti-thymus sera, in chickens infected with infectious bursal disease virus at one day and 3 weeks of age by age-matched controls. Birds were evaluated sequentially at weekly intervals for a period of 8 weeks postinfection. The severity of depressions of B-lymphocyte numbers was found to be age-dependent: the birds infected at one day of age showed a more severe depletion than those infected at 3 weeks of age. The T-lymphocyte numbers were less markedly affected in infected chickens of either age group.

Animals↗
PubMedDate not supplied

Immune profile of infectious bursal disease (IBD). II. Effect of IBD virus on pokeweed-mitogen-stimulated peripheral blood lymphocytes of chickens.

Pokeweed-mitogen-stimulated peripheral blood lymphocytes from chickens infected with infectious bursal disease virus (IBDV) at 1 day and 3 weeks of age, together with those from uninfected age-matched control chickens, were examined at weekly intervals for their capacity to undergo in vitro terminal differentiation. This study included the determination of cytoplasmic-immunoglobulin (CIg)-containing peripheral blood lymphocytes and those bearing the surface membrane immunoglobulin (SmIg) cells to detect any defect in immunoglobulin synthesis and secretion, respectively. The results of our study indicated that there was a highly significant and pronounced progressive depletion of CIg-containing cells in chickens infected at 1 day of age. These findings suggest that IBDV affected the "immature" or precursor B cells to a far greater extent than mature B lymphocytes.

Animals↗
PubMed1995

A study of immune profile in human hydatid diseases.

A clinico haematological and immunological study was undertaken in 90 patients clinically suspected to be suffering from hydatid disease over a period of 1 year. The parameters studied included age of presentation, site of cyst localisation, haematological profile, total immunoglobins of different classes (IgG, IgM, IgA & IgE) and complement component C3, rosette forming lymphocytes, blast cell formation in response to phytohaemagglutinin (PHA-P) and concanavalin A (Con-A) and casoni test using standard methods. Twenty two out of 90 (22.44%) clinically suspected patients were surgically confirmed as hydatid disease cases. Hydatid disease occured in all age groups. Youngest case was 8 years and oldest 70 years. In 17/22 cases the cyst localised in the liver followed by lungs (3) neck (1) and kidney (1). Majority of patients (63.65%) belonged to blood group B. The mean total leucocyte and eosinophill counts were raised significantly (p < 0.001 and p < 0.05, respectively) in confirmed patients. The mean ESR value was raised in hydatid patients though, not significantly (P > 0.08). All the four classes of immunoglobulins viz. IgG, IgA, IgM, IgE and complement C3 were significantly raised in patients of hydatid disease compared to controls (P < 0.001, P < 0.002, p < 0.01 and p < 0.01, P < 0.02 respectively). The percentage of lymphocytes in peripheral blood in hydatid patients was reduced though, not significantly (P > 0.2). The absolute lymphocyte count was raised and mean percentage of T cells was reduced in patients with hydatid disease (P < 0.001 and P < 0.001, respectively).(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗