Animals ; Cell Proliferation ; drug effects ; Lymphocyte Count ; Male ; Mice ; Physical Endurance ; immunology ; Stilbenes ; pharmacology ; T-Lymphocyte Subsets ; drug effects

Antigens, CD ; metabolism ; Antigens, Differentiation, T-Lymphocyte ; metabolism ; CD3 Complex ; metabolism ; Cells, Cultured ; Humans ; Kinetics ; Lectins, C-Type ; metabolism ; Lymphocyte Activation ; T-Lymphocyte Subsets ; drug effects ; immunology ; metabolism

OBJECTIVETo investigate the cellular immune regulation of the long-term intervention of moxa smoke.

METHODSThirty-two Wistar rats were randomly divided into a blank group, a low concentration group, a medium concentration group and a high concentration group, 8 cases in each group. In addition to the blank group, rats in the other groups were exposed to the corresponding concentration moxa smoke for 20 min every day, the T lymphocyte subsets and proportion of the CD4+ CD25+ Treg in CD4+ T cells in peripheral blood were tested by flow cytometry after 6 months.

RESULTSCompared with the blank group, the proportions of CD3+ CD4+, CD3+ CD8+ T cells and CD3+ CD4/CD3+ CD8+ in the other 3 moxa smoke groups were not significantly different (P > 0.05), while the proportions of the CD4+ CD25+ Treg in CD4+ T cells were significantly lower (P < 0.05), but no statistically significant differences among those 3 moxa smoke intervention groups (P > 0.05).

CONCLUSIONLong-term moxa smoke intervention has no significant effect on the proportions of CD3+ CD4+, CD3+ CD8+ T cells and CD3+ CD4+/CD3+ CD8+, but it can decrease the proportions of the CD4+ CD25+ Treg in CD4+ T cells in peripheral blood of rats. The way produced by pretreatment with moxa smoke may play immunomodulatory effect.

Animals ; Lymphocyte Count ; Male ; Moxibustion ; Rats ; Rats, Wistar ; Smoke ; analysis ; T-Lymphocyte Subsets ; drug effects ; immunology ; T-Lymphocytes, Regulatory ; drug effects ; immunology ; Time Factors

OBJECTIVETo investigate the influence of maternal staphylococcal enterotoxin B (SEB) administration during pregnancy on CD3⁺ TCR Vβ8⁺T cells of adult offspring rats.

METHODSPregnant maternal rats at gestational day (GD) 16 were injected intravenously with 15 µg SEB in 0.2 ml PBS (SEB group), and the control rats receive the same volume of PBS. Flow cytometry was used to determine the levels of CD3⁺ TCR Vβ8⁺T cells in both the thymus and peripheral blood of adult offspring rats and the response of these cells to a secondary SEB administration.

RESULTSMaternal SEB administration during pregnancy significantly decreased the percentages of CD3⁺TCR Vβ8⁺T cells in the thymus in adult female (1.760-2.714) and male (1.098-2.088) offspring rats (P<0.05). The change of CD3⁺TCR Vβ8⁺T cells in the peripheral blood was similar to that in the thymus. In the control adult offspring rats, SEB administration at adulthood significantly reduced the percentages of CD3⁺TCR Vβ8⁺T cells in both the thymus and peripheral blood (P<0.05). But in SEB group, a secondary SEB administration in adult offspring rats significantly increased the percentage of CD3⁺TCR Vβ8⁺T cells in the peripheral blood (P<0.05) but not in the thymus (P>0.05).

CONCLUSIONMaternal SEB administration during pregnancy can change the response of CD3⁺ TCR Vβ8⁺T cells of adult offspring rats to a secondary SEB administration.

Animals ; Enterotoxins ; adverse effects ; Female ; Male ; Maternal Exposure ; adverse effects ; Pregnancy ; Rats ; Rats, Sprague-Dawley ; T-Lymphocyte Subsets ; drug effects

This study examined the subsets of T lymphocytes in the thymus, spleen and mesenteric lymph nodes as well as the subsets of B lymphocytes in the spleen and mesenteric lymph nodes in mice administered chitosan adipate (20 mg/kg) intraperitoneally once or four times at 24 h intervals. The results showed that chitosan adipate decreased the percentage of immature CD4+CD8+ thymic T cells and increased the percentage of mature CD4+ and CD8+ thymocytes. The most significant stimulating effect was observed after four injections. A single exposure to chitosan adipate increased the percentage of CD4+ mesenteric lymph node cells, but four injections of the drug increased the percentage of CD4+ and CD8+ mesenteric lymph node cells. Chitosan adipate had no effect on the subset of splenic T cells. In contrast, chitosan adipate administered either once or four times increased the percentage of CD19+ splenocytes but had no effect on the percentage of CD19+ mesenteric lymph node cells. Overall, chitosan adipate induces the maturation and differentiation of thymocytes, and regulates the number of B splenic cells and lymph node T cells irrespective of the number of doses.
Animals ; B-Lymphocyte Subsets/*drug effects/metabolism ; Chitosan/*analogs&derivatives/*pharmacology ; Dose-Response Relationship, Drug ; Female ; Immunologic Factors/pharmacology ; Lymphoid Tissue/drug effects/metabolism ; Male ; Mice ; Mice, Inbred BALB C ; T-Lymphocyte Subsets/*drug effects/metabolism

OBJECTIVE: To investigate the effects of DNA hypomethylation on mRNA and protein expression of perforin promotor in T cells. METHODS: T cells were isolated from the peripheral venous blood of healthy donors by density gradient centrifugation. CD4(+) and CD8(+) subsets were isolated using Miltenyi beads and protocols provided by the manufacturer. Where indicated the T cells were stimulated with PHA for 24 h, then treated with 5-azaC for an additional 72 h. Genomic DNA, mRNA, and protein were isolated from untreated and 5-azaC-treated T cells. Purified DNA was treated with sodium bisulfite, the desired sequences were amplified in sequential fragments using nested PCR. The amplified fragments were cloned into bacteria DH5 alpha and 5 independent clones for each of the amplified fragments were sequenced. The expression of perforin was determined using real time RT-PCR and Western blot. RESULTS: The perforin mRNA and protein in the CD4(+) and CD8(+) subsets treated with 5-azaC were significantly higher than those in the untreated subsets (P<0.05). The results of bisulfite genomic sequencing showed that the methylation of perforin promotor was significantly reduced in the treated cells compared with the untreated cells (P<0.05). CONCLUSION The mRNA and protein expression of perforin significantly increases in the CD4(+) and CD8(+) T cells treated with 5-azaC,which is associated with DNA hypomethylation of perforin promoter in T cells.
Adult ; Azacitidine ; pharmacology ; Cells, Cultured ; DNA Methylation ; drug effects ; Humans ; Perforin ; genetics ; Promoter Regions, Genetic ; genetics ; T-Lymphocyte Subsets ; metabolism

OBJECTIVETo evaluate the protective effect of ligustrazine on T-lymphocyte immunity of patients undergoing autologous blood transfusion (ABT).

METHODSForty American Society of Anesthesiologist (ASA) I - II patients scheduled for receiving selective lumbar surgery, with pre-operational anticipatory blood loss > 400 mL and without any diseases of blood or endocrinal system were enrolled. They were equally randomized into two groups, the trial group and the control group. Ligustrazine was given to patients in the trial group by intravenous dripping at the dose of 2 mg/kg, 30 min before auto-blood collection, also by mixed in the washing saline and heparinized saline solution to make the final concentration of ligustrazine 0.005%. No ligustrazine was given to patients in the control group. The amount of blood loss and autotransfused were measured and recorded; and patients' venous blood samples for T-lymphocyte subsets (CD3, CD4, CD8) determination and CD4/CD8 ratio calculation were collected at different time points, i. e. before surgery (T0) and at 1 h (T1), 1st day (T2) and 5th day (T3) after ABT.

RESULTSCD3 decreased obviously at T1 and T2 in both groups (P < 0.05 or P < 0.01), while at T3, it restored to baseline in the trial group, but remained at the low level in the control group (P < 0.05). Moreover, levels of CD3 at T1-T3 were lower in the control group than those in the trial group respectively (P < 0.05 or P < 0.01). CD4 decreased obviously at T1 (P < 0.01) in both groups, it recovered at T2 in the trial group, but the recovering in the control group was T3, so comparison of CD4 level between groups showed significant difference at T1 and T2 (P < 0.05 or P < 0.01). As for CD4/CD8 ratio, it decreased obviously at T2 and T3 in the control group (P < 0.05), but unchanged in the trial group, showing statistical difference between groups (P < 0.05).

CONCLUSIONLigustrazine had definite protective effect on T-lymphocyte immunity in patients undergoing ABT, which was presented by the milder inhibition and quicker recovery of immunity.

Adult ; Aged ; Blood Transfusion, Autologous ; Female ; Humans ; Male ; Middle Aged ; Pyrazines ; pharmacology ; T-Lymphocyte Subsets ; drug effects ; immunology ; Young Adult

OBJECTIVE: To explore the immunoregulatory effect of Huangqi Fuzhengtang on immunosuppressive mice. METHODS: The immunosuppressive mouse model was established by using hydrocortisone. Huangqi Fuzhengtang and Yupingfeng San apozema were given to the mice intragastrically. The contents of hemolysin, IL-2, and INF-gamma in the mouse serum and the expression of CD3(+), CD4(+), and CD8(+) in the peripheral blood lymphocytes were measured. RESULTS: Huangqi Fuzhengtang could obviously elevate the contents of hemolysin, IL-2, INF-gamma and the ratio of CD4(+) and CD8+, which was more effective than Yupingfeng San. CONCLUSION Huangqi Fuzhengtang could improve the immune function in the immunosuppressive mice.
Adjuvants, Immunologic ; pharmacology ; Animals ; Astragalus propinquus ; chemistry ; Drugs, Chinese Herbal ; pharmacology ; Hydrocortisone ; Immunocompromised Host ; drug effects ; immunology ; Male ; Mice ; Random Allocation ; T-Lymphocyte Subsets ; drug effects

OBJECTIVETo observe effect of oral scorpio and scolopendra powder on T-cell subsets in peripheral blood and intestine from rats with collagen induced arthritis (CIA).

METHOD60 rats were randomly divided into 6 groups: normal control group, model control group, low-dose scorpio and scolopendra group, middle-dose scorpio and scolopendra group, high-dose scorpio and scolopendra group, and type II collagen group. Rat's rheumatoid arthritis was induced by collagen II (C II). Level of T-cell subsets from peripheral blood and intestine was measured by flow cytometry.

RESULTCD4+ T cellular level was obviously increased (P < 0.05 or P < 0.01) or kept increased tendency in peripheral blood and intestine from the model group compared with that of the normal group, while the ratio of CD4+/CD8+ in intestine was obviously descent but the contrary in peripheral blood (P < 0.05 or P < 0.01). CD4+, CD8+ T cellular level in intestine were obviously descent and the ratio of CD4+ /CD8+ increased in all treated groups when compared with in the model group (P < 0.05 or P < 0.01). However, CD4+ T cellular level and the ratio of CD4+/CD8+ in peripheral blood were remarkablely decreased.

CONCLUSIONThe mechanism that scorpio and scolopendra could treat rat's rheumatoid arthritis may be regulating balance of T-lymphocyte subsets in peripheral blood and intestine.

Animals ; Anti-Inflammatory Agents ; pharmacology ; Arthritis, Experimental ; immunology ; Arthritis, Rheumatoid ; immunology ; CD4 Lymphocyte Count ; CD4-Positive T-Lymphocytes ; CD8-Positive T-Lymphocytes ; Female ; Intestinal Mucosa ; immunology ; Medicine, Chinese Traditional ; Rats ; Rats, Wistar ; Scorpions ; chemistry ; T-Lymphocyte Subsets ; drug effects ; immunology

Adolescent ; Adult ; Dermatitis, Occupational ; etiology ; immunology ; Female ; Humans ; Male ; Middle Aged ; T-Lymphocyte Subsets ; drug effects ; immunology ; Trichloroethylene ; adverse effects ; Young Adult