Effect of Fuzheng Kangai Decoction on Immune Regulation and Inhibition of Tumor Growth in Rats with Ovarian Carcinoma / 中国实验方剂学杂志

Objective:To explore the effect of Fuzheng Kangai decotion （FZKAD） on the immune regulation and the inhibition of tumor growth in rats with ovarian carcinoma. Method:Kunming mice were randomly divided into normal group， lentinan （0.05 g·kg^-1） group， and high （27.3 g·kg^-1）， medium （13.65 g·kg^-1） and low （6.825 g·kg^-1） dose groups of FZKAD， with 10 mice in each group， serum hemolytic value （HC₅₀）， antibody-forming cells and the phagocytosis of mononuclear macrophages were measured. Fischer 344 rat xenograft model was established through inoculation of NUTU-19 cell in the right axilla， and the model rats were randomly divided into model group， cisplatin group （0.002 g·kg^-1）， and high （18.9 g·kg^-1）， medium （9.45 g·kg^-1）， and low （4.725 g·kg^-1） dose groups of FZKAD， with 10 rats in each group， in addition， 10 healthy rats were randomly selected as the normal group. Tumor quality， tumor inhibition rate， T lymphocyte subsets， and expressions of serum cytokines， enhancer binding protein homologous protein 1（XBP1） and enhancer binding protein homologous protein （CHOP） protein in tumor tissues were detected after 14 days of administration. Result:Compared with normal group， HC₅₀， level of antibody-forming cells， phagocytic index and phagocytic activity of mice in high， medium and low-dose groups of FZKAD were significantly increased （<italic>P</italic><0.05， <italic>P</italic><0.01）. Tumor quality and XBP1 protein expression in high， medium and low-dose groups of FZKAD were significantly decreased （<italic>P</italic><0.01） compared with the model group， while the tumor inhibition rate， CD4⁺， CD8⁺ T cell ratio， CD4⁺/CD8⁺ ratio， tumor necrosis factor-<italic>α</italic> （TNF-<italic>α</italic>）， interleukin-2 （IL-2）， <italic>γ-</italic>interferon （IFN-<italic>γ</italic>） expression and CHOP protein expression were significantly increased （<italic>P</italic><0.05， <italic>P</italic><0.01）. Conclusion:FZKAD can improve the immune function of normal mice and inhibit the tumor growth in rats with ovarian carcinoma， and the immunity regulation effect is the main mechanism.

Relationship between lncRNA and the differentiation of CD4+ T lymphocyte subsets in autoimmune diseases / 药学学报

Long non-coding RNA (lncRNA) has a wide range of biological functions in epigenetic, cell cycle, cell differentiation and other life activities, and that affect the development and differentiation of immune cells and the maintenance of homeostasis in the immune system. CD4+ T cell subsets are heterogeneous cells with different functions, including promoting the proliferation and differentiation of T cells, B cells and other immune cells, and coordinating related functions between immune cells. Autoimmune disease (AID) is a chronic inflammatory disease caused by an autoantigen immune reaction. lncRNA and CD4+ T cell subsets are involved in the occurrence and progression of the disease. This article reviews the relationship between lncRNA and the differentiation of AID CD4+ T cell subsets.

Re-defining T-Cell Exhaustion: Subset, Function, and Regulation

Acute viral infection or vaccination generates highly functional memory CD8 T cells following the Ag resolution. In contrast, persistent antigenic stimulation in chronic viral infection and cancer leads to a state of T-cell dysfunction termed T-cell exhaustion. We and other have recently identified a novel subset of exhausted CD8 T cells that act as stem cells for maintaining virus-specific CD8 T cells in a mouse model of chronic lymphocytic choriomeningitis virus infection. This stem cell-like CD8 T-cell subset has been also observed in both mouse and human tumor models. Most importantly, in both chronic viral infection and tumor models, the proliferative burst of Ag-specific CD8 T cells driven by PD-1-directed immunotherapy comes exclusively from this stem cell-like CD8 T-cell subset. Therefore, a better understanding of the mechanisms how CD8 T-cell subsets are regulated during chronic viral infection and cancer is required to improve the current immunotherapies that restore the function of exhausted CD8 T cells. In this review, we discuss the differentiation of virus-specific CD8 T cells during chronic viral infection, the characteristics and function of CD8 T-cell subsets, and the therapeutic intervention of PD-1-directed immunotherapy in cancer.

Effect of icariin on early βdefensin2 and T cell subsets in rats after tracheotomy / 中南大学学报(医学版)

OBJECTIVES@#To investigate the effect of icariin (ICA) on early β-defensin-2 and T cell subsets in rats after tracheotomy.@*METHODS@#A total of 54 SPF male Sprague-Dawley rats were randomly divided into a normal control group (group A), a model group (group B), and a model+ICA treatment group (group C), with 18 rats in each group. A tracheotomy intubation model of the B and C group was prepared. After 6 h of surgery, ICA intervention was given to group C. Groups A and B were given the same amount of normal saline. Lung tissue, alveolar lavage fluid and peripheral blood were taken at 24 h, 72 h and 168 h, respectively. The expression of rat β-defensin-2 mRNA in lung tissue was detected by RT-PCR. The content of β-defensin-2 in alveolar lavage fluid and peripheral blood serum was detected by ELISA. The content of peripheral blood T cell subsets (CD3, CD4, CD8) was detected by flow cytometry, and the ratio of CD4/CD8 was calculated.@*RESULTS@#After tracheotomy, the levels of β-defensin-2 mRNA and β-defensin-2 in lung tissue from the group B were increased significantly at 24 h, then they were decreased gradually, and decreased most significantly at 168 h (0.05). The level of CD3 T cells in peripheral blood was significantly lower than that in the group A (0.05). After ICA intervention in group C: lung tissue, alveolar lavage fluid, peripheral blood serum β-defensin-2 content, and peripheral blood CD3 and CD4 T cell levels were gradually increased, significantly higher than those in the group B (<0.05). CD8 T cell level was significantly lower than that in the group A at 24 h (<0.05), the CD4/CD8 ratio was significantly higher at 168 h than those in the group A or B (both <0.01).@*CONCLUSIONS@#ICA can improve the early lung immune function in rats with tracheotomy, which might be related to up-regulation of β-defensin-2 in lung tissue and alveolar lavage fluid, concomitant with increases in CD3 and CD4 T cells and CD4/CD8 ratio in peripheral blood while reduction in CD8 cells.

The clinical efficacy and mechanism of Shenfu injection combined with azithromycin on infantile mycoplasma pneumonia / 西安交通大学学报(医学版)

Objective: To evaluate the clinical efficacy and molecular mechanism of Shenfu combined with azithromycin on infantile mycoplasma pneumonia. Methods: Totally 80 children with mycoplasma pneumonia treated in Children's Hospital Affiliated to Soochow University from June 2016 to June 2017 were selected and randomly divided into two groups with 40 in each. Azithromycin was provided in both groups. Shenfu was administered in the observation group. The clinical efficacy, immunological functions and miR-181a level, and related molecular markers of all the subjects were observed. Lentivirus was used to transfer miR-181a into human T lymphocytes to observe its effects on lymphocyte proliferation, cytokine secretion level and related signaling pathways. Results: Compared with the normal group after treatment, the clinical efficacy, T lymphocyte subset proportion and inflammation cytokines were significantly increased (P<0.05), and the time of clinical symptoms remission was significantly decreased in the observation group after treatment (P<0.05). In addition, the content of miR-181a (9.3±5.3) in lymphocytes of the observation group after treatment was significantly lower than that (12.2±4.5) of the control group after treatment (P<0.05). In vitro assay revealed that miR-181a was significantly decreased lymphocyte proliferation and the ability of secretory cytokine. Luciferase reporter assay demonstrated that miR-181a could inhibit KRAS, NRAS and MAPK1 expressions, thus down-regulating P-AKT and P-MEK phosphorylation. Conclusion: Shenfu combined with azithromycin can effectively improve immunity functions and its mechanism might be related to the level of miR-181a in lymphocytes.

The clinical significance of T-cell subset,cytokine levels in bronchoalveolar lavage fluid of children with mycoplasma pneumoniae pneumonia / 中国小儿急救医学

Objective To explore the levels and clinical significances of T-cell subset,interleukin (IL)-6,interferon(IFN)-γ,and monocyte chemotactic protein(MCP)-1 in bronchoalveolar lavage fluid (BALF) of children with mycoplasma pneumoniae pneumonia(MPP).Methods Thirty-six children with pneumonia were admitted in our hospital from October 2014 to March 2016.They were divided into refractory mycoplasma pneumoniae pneumonia (RMPP) group (n=18) and MPP group(n=18).Sixteen cases with bronchial foreign body were selected as the control group.The levels of IL-6,MCP-1,IFN-γ and T-cell subset in BALF were detected by ELISA and alkaline phosphatase-anti-alkaline phosphatase(APAAP) bridging enzyme linked immunosorbent assay.Results (1)The levels of CD3 +and CD8 +T cells in BALF of MPP group and RMPP group were higher than those in the control group(P<0.05),but there were no significant differences between the two groups (P>0.05).(2) The level of IL-6 in acute phase of RMPP group was higher than that in the control group(P<0.05).The levels of IL-6 in acute phase of RMPP group and MPP group were both higher than that in recovery period(P<0.05,respectively).(3)The levels of IFN-γ in the acute phase of RMPP group and MPP group were higher than that in the control group,and the differences were statistically significant(P<0.05).The IFN-γ levels in acute and recovery phases of RMPP group were both significantly higher than those in MPP group respectively(P< 0.05).(4)The level of MCP-1 in BALF in control group was lower than those in the acute phase of RMPP group and MPP group(P<0.05).The level of MCP-1 in RMPP acute group was significantly higher than that in MPP acute group,and higher in acute phase than those in recovery phase both in two groups(P<0.05).Conclusion There are cell immune regulation and function disorders when children are infected mycoplasma pneumoniae. IL-6, IFN-γ and MCP-1 may participate in the pathogenesis of MPP,and more importantly,IFN-γ and MCP-1 may be the important indicator to forecast the severity of MPP.

Effects of Acarbose Combined with Metformin on Related Indexes of Patients with Type 2 Diabetes / 中国药房

OBJECTIVE:To investigate the effects of acarbose combined with metformin on related indexes of patients with type 2 diabetes mellitus.METHODS:A total of 100 patients with type 2 diabetes mellitus were randomly divided into control group (50 cases) and observation group (50 cases).Control group was given Acrbose tablet 50 mg orally,3 times a day.Observation group was additionally given Metformin hydrochloride tablet 0.5 g orally,3 times a day,on the basis of control group.Both groups were treated for 12 weeks.The levels of fasting plasma glucose (FPG),fasting plasma insulin (FINS),glycosylated hemoglobin (HbA1c),2 h postprandial plasma glucose (2 hPG),postprandial 2 h insulin (2 hFINS),insulin resistance index (HOMA-IR),the proportion of Th cell subsets in CD4+ T cells,IL-22,IL-17A and IFN-γ,mRNA expression of IL-22,IL-17A and IFN-γ were observed in 2 groups before and after treatment.The occurrence of ADR was recorded.RESULTS:After treatment,FPG,FINS,HbA1c,2 hPG,2 hFINS,HOMA-IR,the proportion of Th cell subsets in CD4+ T cells,the concentrations of IL-22,IL-17A and IFN-γ,expression of IL-22 mRNA,IL-17A mRNA and IFN-γ mRNA in 2 groups were significantly lower than before treatment,with statistical significance (P＜0.05);there was no significant difference in the proportion of Th1 in T cells between 2 groups (P＞0.05).Other indexes of observation group were significantly lower than those of control group,with statistical significance (P＜0.05).There was no statistical significance in the incidence of ADR between 2 groups (P＞0.05).CONCLUSIONS:For patients with type 2 diabetes mellitus,acarbose combined with metformin can effectively control the level of blood glucose,improve insulin resistance,balance Th cell subsets,reduce inflammatory factors levels but don't increase the occurrence of ADR.

Effects of Acarbose Combined with Metformin on Related Indexes of Patients with Type 2 Diabetes / 中国药房

OBJECTIVE:To investigate the effects of acarbose combined with metformin on related indexes of patients with type 2 diabetes mellitus.METHODS:A total of 100 patients with type 2 diabetes mellitus were randomly divided into control group (50 cases) and observation group (50 cases).Control group was given Acrbose tablet 50 mg orally,3 times a day.Observation group was additionally given Metformin hydrochloride tablet 0.5 g orally,3 times a day,on the basis of control group.Both groups were treated for 12 weeks.The levels of fasting plasma glucose (FPG),fasting plasma insulin (FINS),glycosylated hemoglobin (HbA1c),2 h postprandial plasma glucose (2 hPG),postprandial 2 h insulin (2 hFINS),insulin resistance index (HOMA-IR),the proportion of Th cell subsets in CD4+ T cells,IL-22,IL-17A and IFN-γ,mRNA expression of IL-22,IL-17A and IFN-γ were observed in 2 groups before and after treatment.The occurrence of ADR was recorded.RESULTS:After treatment,FPG,FINS,HbA1c,2 hPG,2 hFINS,HOMA-IR,the proportion of Th cell subsets in CD4+ T cells,the concentrations of IL-22,IL-17A and IFN-γ,expression of IL-22 mRNA,IL-17A mRNA and IFN-γ mRNA in 2 groups were significantly lower than before treatment,with statistical significance (P＜0.05);there was no significant difference in the proportion of Th1 in T cells between 2 groups (P＞0.05).Other indexes of observation group were significantly lower than those of control group,with statistical significance (P＜0.05).There was no statistical significance in the incidence of ADR between 2 groups (P＞0.05).CONCLUSIONS:For patients with type 2 diabetes mellitus,acarbose combined with metformin can effectively control the level of blood glucose,improve insulin resistance,balance Th cell subsets,reduce inflammatory factors levels but don't increase the occurrence of ADR.

Immunopathological mechanism of TNBS-induced inflammatory bowel disease in mice / 中华微生物学和免疫学杂志

Objective To study the possible pathogenesis of TNBS (2,4,6-trinitrobenzenesulfonic acid)-induced inflammatory bowel disease (IBD) in a mouse model by analyzing histological changes in colon and the expression of cytokines and transcription factor RORγt related to T cell subsets in mesenteric lymph nodes.Methods Female BALB/c mice aged 6-8 weeks were randomly grouped into two groups: IBD model and normal control groups.The mouse model of IBD was established by treating mice with 200 μl of 5％ TNBS/50％ ethanol solution (1∶1) through intestinal instillation, while the mice in the normal control group were instilled with PBS.Pathological changes in colon samples of mice were observed.Real-time PCR was performed to detect the dynamic expression of Th1 cytokines (IL-2, IFN-γ and IL-12p40), Th2 cytokine (IL-4), Treg-related cytokine (IL-10), Th17 cell-related cytokines (IL-17, IL-21 and IL-23) and transcription factor RORγt in mesenteric lymph nodes.Results The mice in the model group begun to show abnormal vital signs such as diarrhea, loss of weight and reduced activity, and mild hyperemia of intestinal mucosa and edema from the third day after modeling.Slight lesions were observed in histological slices of colon tissues stained with hematoxylin and eosin (HE).The expression of IL-21, IL-23 and IL-17 at mRNA level were significantly increased, while the expression of other cytokines showed no significant change.On the sixth day after modeling, many pathological symptoms and intestinal mucosal lesions were aggravated, and marked infiltration of inflammatory cells was observed in histological slices of colon tissues, which indicated that the IBD model was successfully induced by TNBS.Compared with the control group, the IBD model group showed significantly enhanced expression of IL-2, IL-12p40 and IL-10 in mesenteric lymph nodes at mRNA level on the sixth day after modeling.Although the expression of IL-21, IL-23, IL-17 and RORγt at mRNA level on the sixth day were down-regulated to different extent as compared with those on the third day, they were still significantly higher than those of the control group.Conclusion Th17 cell-related cytokines play an important role in the early stage of TNBS-induced IBD.With the progression of the disease, both Th1 and Th17 cells are involved in the immunopathological injury of colon tissues.

Inhibition effect of sorafenib on adjuvant arthritis in rats / 解剖学报

Objective: To observe the inhibition effect of sorafenib on adjuvant arthritis in rats. Methods: A total of 36 male SPF SD rats were divided into 6 groups and 0. 1 ml of the complete Freund' s adjuvant was subcutaneously injected into the left hind paw except the normal group. The volume of rat hind paw was measured. The CD4+ and CD8+ T cell subsets of the peripheral blood were analyzed by flow cytometry. The microvessel density of synovial tissues was determined by immunohistochemical chain mildew avidin peroxidase enzymatic (SP) method. Results: Compared with model group, the rats of sorafenib groups alleviated the volume of rat hind paw and reduced microvessel density. Sorafenib (20, 40mg/kg) groups decreased the percentage of CD4+ T cell and increased the percentage of CD8+ T cell at the same time. All the values were statistically significant (P < 0. 05). Conclusion: Sorafenib can ameliorate adjuvant arthritis in rats, which effect may be related to sorafenib causing CD4+ and CD8+ T cell subset of peripheral blood deviation and reducing microvessel density of synovial tissues.

The Inhibitory Effect of Baixuan Xiatare Tablet on Model Mouse with Allergic Contact Dermatitis / 中国药房

OBJECTIVE:To investigate the inhibitory effect of Baixuan xiatare tablet on the model mouse with allergic contact dermatitis (ACD). METHODS:60 BALB/c mice were equally randomized into normal control (isometric solvent) group,model (isometric solvent)group,ebastine(positive control,0.003 g/kg)group and the groups of high,middle and low doses of Baixuan xiatare tablet(2.0,1.0 and 0.5 g/kg). The mice were given drugs,ig,once daily for 14 consecutive days. 0.5% 2,4-dinitrofluoro-benzene(DNFB)acetone olive oil solution was applied,for sensitization,on the prepared mouse’s skins one and two days before administration,and 0.2% DNFB acetone olive oil solution on their left ears 16 days thereafter to establish mouse models of ACD. At 48 h after successful establishment of the models,the thickness of the mouse’s left ear margin was measured and the difference value and swelling degree were calculated;flow cytometer was used to determine the levels of T lymphocyte subsets CD4+ and CD8+ in mouse blood and calculate the ratio of CD4+ to CD8+;the levels of interleukin 4(IL-4)and IL-6 in mouse serum were de-termined. RESULTS:Compared with normal control group,those in the model group had higher difference value of ear margin and swelling degree,lower level of CD4+ in blood and ratio of CD4+ to CD8+,and higher content of IL-6 in serum. There was statisti-cally difference (P<0.01). Compared with model group,those in the groups of high,middle and low doses of Baixuan xiatare tablet had lower degree of left ear swelling and higher level of CD4+ in blood;those in the groups of high and middle doses thereof had lower difference value of left ear margin and level of IL-6 in serum;and those in the group of high dose thereof had higher lev-el of CD8+ in blood. There was statistically significance(P<0.01 or P<0.05). CONCLUSIONS:Baixuan xiatare tablet has inhibi-tory effect to some degree on the mouse model with ACD by a mechanism which may be related to the balance of subsets CD4+and CD8+in blood and the reduction of IL-6 in serum.

Application of ImmuKnow immune cell function assay in monitoring of immune function after renal transplantation / 器官移植

Objective To investigate the application value of ImmuKnow immune cell function assay in monitoring of immune function changes after renal transplantation.Methods One hundred and six patients with uraemia undergoing renal transplantation in the Department of Organ Transplantation of the Second Affiliated Hospital of Guangzhou Medical University from January 201 3 to December 201 4 were included.Blood specimens were collected before transplantation and at the occurrence of infection or acute rejection during 1 2 months after transplantation.ImmoKnow was used to determine the adenosine triphosphate (ATP)content in CD4 +T cells.The ATP content of patients with renal transplantation at different clinical conditions were observed and compared,including periopreative group,stable group,acute rejection group and infecticn group (including severe pneumonia).The ratio of T cell subsets (CD4 +T cells,CD8 +T cells)and natural killer (NK)cells in peripheral blood were detected.Pearson correlation analysis was used to detect the association between ATP and the blood trough concentration of tacrolimus (FK506)and ciclosporin (CsA).Results The ATP content of the patients in the infection group was lower than that of the patients in the stable group (P <0.001 ).The ATP content of patients with severe pneumonia was lower than that of patients with other infections (P <0.05).The percentage of CD4 +T cells of the patients in the infection group was lower than that of the patients in the postoperative stable group (P <0.05 ). The ATP content was not associated with the postoperative blood trough concentration of FK506 and CsA.Conclusions ImmuKnow assay may be used to monitor the postoperative immune function of patients after renal transplantation.The detection of ATP content in CD4 + T cells has hinting and pre-warning function for postoperative infection,especially for severe pneumonia.

Experimental Study on Antitumor Effect of Volatile Oil of Xihuang Pill and Its Immune Mechanism / 世界科学技术-中医药现代化

This study was aimed to explore the antitumor effect of volatile oil of X ihuang pill and its immune mecha-nism in order to screen the antitumor active site of Xihuang pill. Among 70 female Wistar rats, 10 rats were random-ly selected as the blank control group; and the other 60 rats was used in the establishment of walker 256 breast can-cer cell tumor-bearing rat models. The model rats were randomly divided into the negative control group (model group), high-dose volatile oil group, middle-dose volatile oil group, low-dose volatile oil group, high-dose Xihuang pill group, and lentinan group (positive control group), with 10 rats in each group. The intragastric administration was given twice a day for 14 days. Blood was taken from the abdominal aorta. Tumor tissues was removed and weighed to calculate the tumor inhibitory rate. ELISA method was used to detect the level of IL-2, IL-6, IL-10, IFN-γ and TGF-β in peripheral blood. The flow cytometry was used to detect the content of CD3+ T cell, CD4+ T cell, CD8+ T cell, and B7-1 cell (CD80). The results showed that the tumor inhibitory rates of volatile oil of high-dose group and middle-dose group were 28.4% and 24.1%, respectively. Compared with the model group, the average level of IL-2 and IFN-γ of volatile oil of high-dose group and middle-dose group and CD3+ T cell, CD8+ T cell, B7-1 cell con-tent were obviously increased (P< 0.05). It was concluded that volatile oil of Xihuang pill had certain antitumor ef-fect, which was one of the antitumor active sites of Xihuang pill. The volatile oil of Xihuang pill upregulates the lev-els of IL-2 and IFN-γ, as well as the contents of CD3+ T cell, CD8+ T cell, B7-1 cell in order to increase the im-mune clearance function of tumor-bearing rats.

Mucosal dendritic cells shape mucosal immunity

Dendritic cells (DCs) are key modulators that shape the immune system. In mucosal tissues, DCs act as surveillance systems to sense infection and also function as professional antigen-presenting cells that stimulate the differentiation of naive T and B cells. On the basis of their molecular expression, DCs can be divided into several subsets with unique functions. In this review, we focus on intestinal DC subsets and their function in bridging the innate signaling and adaptive immune systems to maintain the homeostasis of the intestinal immune environment. We also review the current strategies for manipulating mucosal DCs for the development of efficient mucosal vaccines to protect against infectious diseases.

Methods for Flow Cytometric Analysis of T Cell Subsets in HIV-infected Patients: 2-Color versus 4-Color

BACKGROUND: Blood CD4+ T-lymphocyte (T4) count is a major clinical marker for the diagnosis and management of AIDS, and flow cytometry is considered the gold standard for T4 enumeration. Our aim was to compare the 2-color and 4-color flow cytometric methods for T-cell subset analysis in HIV-infected patients. METHODS: T-cell subsets such as T3, T4, T8, and CD3+CD4-CD8- double negative T cells (DN T) were analyzed from the whole blood of 40 HIV-infected patients by using both 2-color and 4-color methods on a Cytomics FC500 analyzer. Statistical analyses using simple linear regression, paired t-tests, and Bland-Altman plots were performed. RESULTS: The measured T3 (%), T4 (%), T4 (/microL), T8 (%), T8 (/microL), and DN T (%) differed significantly between the 2 methods (P<0.05), whereas the T4/T8 ratio did not. T3 (%), T4 (%), T4 (/microL), T8 (%), T8 (/microL), and T4/T8 measured by the 2 methods showed good correlation, with correlation coefficients above 0.96, whereas DN T (%) did not. The mean differences in T4 (%) and T8 (%) were 0.39% (limit of agreement (LoA), -1.64~2.43) and 1.26% (LoA, -3.37~5.89), respectively. CONCLUSIONS: Although there were statistically significant differences in the T cell subsets measured between the 2 methods, the differences were minor, and the 2 methods showed good correlation. As confirmed in this study, DN T (%) estimated by the 2-color method is lower than the actual value. We suggest that although the 2 methods can be used interchangeably, the 4-color method is recommended for the analysis of some specific subpopulations such as DN T (%).

Loss of CD127 & increased immunosenescence of T cell subsets in HIV infected individuals.

Background & objectives: HIV infection is characterized by a perturbation in T cell homeostasis, leading to alteration in T cell subsets. In addition to alteration in differentiation, HIV infection also leads to change in T cell survival and regenerative capacity, as suggested by differential expression of CD127 and CD57. We evaluated the expression patterns of CD127 and CD57 on CD4 and CD8 effector, memory and naïve T cell subsets in HIV-infected and uninfected individuals. Methods: We characterized T cell subsets based on expression of these markers, and compared their expression pattern in HIV infected subjects and uninfected controls. We further assessed therapy generated changes in these subsets and expression of CD127 and CD57 on them. Results: There was a generalized decrease in naïve CD4 and CD8 T cells in HIV infected subjects. These changes in T cell subset distribution were related to antigen load. CD127 expression was significantly reduced in T cells from HIV infected subject. In association to this, HIV infected subjects had higher percentage of T cell subsets expressing CD57. Increased CD57 and reduced CD127 expression correlated with plasma viraemia and CD8 T cell activation state. Incomplete restoration of T cell subset proportions was observed, despite suppression of viral replication and increase in CD4 T cell counts. Further, the improvement was more pronounced in CD127 expression. Interpretation & conclusions: HIV infected subjects have reduced T cell regenerative capacity along with increased senescence, highlighting decreased proliferation and effector activities.

Result of Immuno-Regulating Treatment in Active New Pulmonary TB Patients in Mongolia / Монголын Анагаах Ухаан

Background: Natural protection against Mycobacterium tuberculosis is based on cell-mediated immunity, which most importantly involves CD4+ and CD8+ T-cell subsets. Therefore, the evaluation of CD4+ and CD8+ T-cell profi les are important to evaluate cell-mediated immunity. Immuno-regulating therapy is important in increase of T cell subsets. Objective: To determine some T-cell subsets in active pulmonary tuberculosis patients following immunoregulating treatment in intensive phase of antituberculosis treatment, so to evaluate the treatment effect. Method: This study was conducted in TB clinic of National Center for Communicable Diseases (NCCD) between Aug 2008 and Mar 2009. CD4+ and CD8+-T cells were evaluated in 50 active pulmonary tuberculosis (infi ltrative form) cases before antituberculosis treatment (25 cases with Salimon-Study group, 25 cases without SalimonControl group) Patients with chronic disease, pregnant and alcohol users are excluded. The T cell subsets count was performed by FACSCount fl ow cytometer at the Immunology Laboratory of the NCCD,Mongolia.The monoclonal antibodies to CD3, CD4 and CD8 (Becton Dickinson) were used for the analysis. Result: CD4 count was 605,1242,7 cells/microL, CD8 count-470,92235,7 cells/microL, CD3 count-1130,7425,6 cells/microL, CD4/CD8 ratio was-1,480,67. CD4, CD8, CD3 cells were signifi cantly lower (P=0.05) in active pulmonary TB patients than in healthy Mongolian. And these subsets were signifi cantly lower in older patients (>50 age).There was no statistical signifi cance in sex and other age groups (p>0, 05). There were statistical signifi cances such as CD4 count, CD4/CD8 ratio (CD4-733,95314,38 cells/micro, CD4/CD8 ratio-1.870,7 in treatment group, CD4-570,54213.07 cells/micro, CD4/CD8 ratio-1.260.45 in control group) between TB and control group at the end of intensive phase of antituberculosis treatment (=0,05, =0,001). However, there were not any signifi cance CD8 count and CD3 count between two groups (CD8-423,68174,28 cells/microL, CD3-1212,27453,98 cells/microL in treatment group, CD8-500,67203,74cells/microL, CD3 -1139,33 386,47 cells/ microL in control group) (=0,05). Conclusion: 1. T cell subsets were signifi cantly lower in active,new,smear positive, pulmonary TB patients than in healthy Mongolians (p=0.05). 2. The statistical signifi cance is observed in 50 years and older TB patients (p=0.05). 3. CD4, CD4/CD8 were signifi cantly higher in patients treated with immuno-regulating treatment than in patients of control group (=0,05, =0,001).

The observation on the immunity state of lung cancer by radiotherapy in sync with chemotherapy combined with pingxiao capsule / 重庆医科大学学报

Objective:This research is to observe the immunity state of lung cancer by radiotherapy in sync with chemotherapy combined with pingxiao capsule,and to evaluate the effect on the immune function and the existence qualitative of pingxiao capsule in lung cancer.Method:Sixty lung cancer patients were parted into two groups at random,one is simple radiotherapy in sync with chemotherapy,the other is radiotherapy in sync with chemotherapy combined with pingxiao capsule.All the two groups were carried out T-cell subgroup experiment at the beginning and three weeks after the therapy.Results:After therapy CD3,CD4 and CD4/CD8 all indicates significant lower level(P

Probiotics in the treatment of experimental colitis in rats and its influence on T cell subsets / 中国实用内科杂志

Objective To evaluate the effects of probiotics in experimental colitis of rats.Methods Models of experimental colitis were established.Several groups of rats were set up as probiotics group,negative group and positive group.Histologic scoring was used to estimate effects of drugs;the expression of CD~+_4 andCD~+_8 on T cell surface in peripheral blood,spleen mononuclear cells and intraepithelial lymphocytes of colon were detected by flow cytometry.Results Histopathology shows that probiotics of larger dosage was curative for experimental colitis in rats.Proportion of CD~+_4 and CD~+_8 T cells increased in colon of colitis,which was decreased by treatment of larger dose of probiotics.CD~+_4/CD~+_8 ratio and T cell subsets in systemic immune system were not influenced by probiotics.Conclusion Probiotics of large dosage are effective in the treatment of experimental colitis of rats incuced by TNBS,possibly associated with immune regulation and tends to be localized in mucosal immune system in colon.

Analysis on T Cell Subset of Peripheral Blood of Severe Aplastic Anemia / 浙江中医药大学学报

ObjectiveExplore the pathogeny of cell immunity of severe aplastic anemia(SAA),also appraise the effect and prognosis value of T cell subset change in the treatment of SAA.MethodTake normal persons as control,combine CD_3,CD_4,CD_8 with human being peripheral blood monocytes,analyse with flow cell method the cells of CD~+_3,CD~+_4,CD~+_8 in monocyte and CD~+_4/CD~+_8.Compare and analyse T cell subset in 3 groups before and after treatment.ResultCompared with control,there’s obvious meaningful difference in T lymphocytesCD~+_3 and CD~+_8,and CD~+_4/CD~+_8(P