Institution for Laboratory Medicine

Changshu, China

Institution for Laboratory Medicine

Changshu, China

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Jiang T.,Institution for Laboratory Medicine | Sheng J.,Institution for Laboratory Medicine | Qin Y.,Institution for Laboratory Medicine | Xiong H.,Institution for Laboratory Medicine | And 9 more authors.
Asian Pacific Journal of Allergy and Immunology | Year: 2014

Background: Hyperactivation of CD4+ T cells in peripheral blood and airway tissues has been suggested to play a key role in the development and maintenance of chronic inflammation in childhood asthma. However, the underlying mechanisms are not yet clear. Objective: To investigate alterations in serum levels of T helper cell-related cytokines, mitogenstimulated CD4+ T cell proliferation and activation-induced cell death (AICD) in childhood asthma. Methods: 21 children with untreated asthma and 21 healthy volunteers (age and gender matched) participated in this study. Th1/Th2/Th17 cytokines in serum were analyzed by flow cytometry. CD4+ T cells were isolated from participants by using immuno-magnetic beads and were stimulated by phytohemagglutinin (PHA). Cell proliferation was evaluated with a Cell Counting Kit-8 (CCK-8). Activation induced cell death (AICD) of CD4+ T cells was also induced by PHA and apoptosis was assayed by annexin V/PI staining. Quantitative RT-PCR was carried out to analyze Fas and FasL mRNA expression. FLIPL, caspase-8 and Bcl-2 were detected by western blot analysis. Results: In children with asthma, the proliferative capacity of CD4+ T cells was enhanced and AICD was inhibited significantly, while serum IL-4, IL-10 and TNF were markedly higher compared with the control group. Fas mRNA expression in the asthma group was obviously lower than that in the control group, while no change was detected in FasL mRNA expression. Western blot analysis showed that the levels of the anti-apoptotic proteins, FLIPL and Bcl-2 in CD4+ T cells of the asthma group were significantly higher than in the control group. Spearman's correlation tests showed that only IL-4 correlated positively with FLIPL and Bcl-2 expression, while IL-10 and TNF were unrelated to FLIPL and Bcl-2 expression. Conclusions: These results indicate that enhanced proliferation and defective AICD of CD4+ T cells influence the T cell-mediated inflammatory reaction in childhood asthma and that increased IL-4, FLIPL and Bcl-2 expression and decreased Fas expression jointly participate in these changes in cell proliferation and apoptosis.


Qian C.,100th Military Hospital | Jiang T.,Institution for Laboratory Medicine | Zhang W.,Shanghai University | Ren C.,100th Military Hospital | And 5 more authors.
Cytokine | Year: 2013

Primary biliary cirrhosis (PBC) is a typical autoimmune disease for which the pathogenesis remains unclear. IL-23 and IL-17 are pro-inflammatory cytokines of the "IL-23/IL-17 axis," which may play a key role in the pathogenesis of autoimmune diseases. In this study, we investigated the expression of IL-23 and IL-17 in the peripheral blood of patients with PBC and its clinical significance. We used quantitative PCR to determine mRNA expressions of IL-23, IL-23 receptor, and IL-17 in peripheral blood mononuclear cells (PBMC) from PBC patients. ELISA's were used to determine patients' serum levels of IL-23 and IL-17. IL-23- and IL-17-producing cells in liver biopsis were also analyzed. Compared to a healthy control group, the mRNA expression levels of IL-23 p19, its corresponding receptor, IL-23R, and IL-17 in PBMC's from PBC patients were significantly increased, and these levels were correlated with PBC disease stages. PBC patients' serum levels of IL-23 and IL-17 were higher than those in a post-hepatic cirrhosis group and a healthy group, and were significantly higher in the early PBC disease stages than in the advanced PBC stages. There were significantly more IL23+ and IL-17+ mononuclear cells in portal areas of liver tissues in advanced stages of this disease than in the early stages. The serum levels of IL-23 and IL-17 in PBC patients were positively correlated with serum GGT levels. Thus, IL-23 and IL-17 may play an important role in the pathogenesis of PBC by promoting inflammation. Because the IL-23 and IL-17 levels in the peripheral blood of PBC patients were increased and were correlated with clinical stages, they may be indices that could be used to clinically monitor PBC. © 2013 Elsevier Ltd.


Gong Y.,Institution for Laboratory Medicine | Zhao C.,No2 Peoples Hospital | Zhao P.,Beijing 302 Hospital | Wang M.,Institution for Laboratory Medicine | And 8 more authors.
Digestive Diseases and Sciences | Year: 2015

Aim: To explore the possible role of Breg in the interaction with Th cells and consequent pathogenesis of CHB.Background: A subset of interleukin (IL)-10-producing regulatory B (Breg) cells that suppress T-cell-mediated immunity was recently identified; however, their role in chronic hepatitis B (CHB) remains elusive.Methods: The prevalence of Breg as well as 3 major effector T-cell subsets—CD4+CD25highFoxp3+ regulatory T (Treg) cells, T helper 1 cells (Th1), and T helper 2 cells (Th2)—was assessed in the peripheral blood of 31 patients with CHB, 28 patients with acute hepatitis B (AHB), and 25 healthy controls (HC).Results: Compared to patients with AHB and HC, the prevalence of Breg and Treg cells and the concentration of IL-10 in the supernatant of cultured peripheral blood mononuclear cells (PBMCs) were greatly increased in patients with CHB. A significantly decreased proportion of Th1 cells was also observed in patients with CHB and was demonstrated to have a negative correlation with the prevalence of Breg. Furthermore, depletion of Treg cells in the PBMCs of patients with CHB did not alter the frequency of Breg cells or their ability to produce IL-10, indicating little, if any, impact of Treg cells on the generation and maintenance of Breg cells.Conclusions: Our data indicate that increased Breg cells might be a major source of elevated IL-10 in CHB and represent a critical and independent regulatory force in the development of impaired anti-HBV immunity, consequently contributing to the pathogenesis of CHB. © 2014, Springer Science+Business Media New York.


PubMed | Changhai Hospital, Institution for Laboratory Medicine and Chinese People's Liberation Army
Type: Journal Article | Journal: Biomedical chromatography : BMC | Year: 2016

A serum metabolomic method based on ultra-high-performance liquid chromatography coupled with mass spectrometry was developed to characterize hyperuricemia-related metabolic profiles and delineate the mechanism of Sanmiao wan (SMW), a traditional Chinese medicine (TCM), in treating hyperuricemic rats. With partial least-squares discriminant analysis for classification and selection of biomarkers, 13 potential biomarkers in mouse serum were identified in the screen, primarily involved in purine metabolism, arginine and proline metabolism, citrate cycle, phenylalanine metabolism, tryptophan metabolism and glycerophospholipid metabolism. Taking these potential biomarkers as screening indexes, SMW could reverse the pathological process of hyperuricemia through partially regulating the perturbed metabolic pathway except for glycerophospholipid metabolism. Our results showed that a metabolomic approach offers a useful tool to identify hyperuricemia-related biomarkers and provides a new methodological cue for systematically dissecting the underlying efficacies and mechanisms of TCM in treating hyperuricemia.


PubMed | Institution for Laboratory Medicine
Type: Journal Article | Journal: Digestive diseases and sciences | Year: 2015

A subset of interleukin (IL)-10-producing regulatory B (Breg) cells that suppress T-cell-mediated immunity was recently identified; however, their role in chronic hepatitis B (CHB) remains elusive.To explore the possible role of Breg in the interaction with Th cells and consequent pathogenesis of CHB.The prevalence of Breg as well as 3 major effector T-cell subsets--CD4(+)CD25(high)Foxp3(+) regulatory T (Treg) cells, T helper 1 cells (Th1), and T helper 2 cells (Th2)--was assessed in the peripheral blood of 31 patients with CHB, 28 patients with acute hepatitis B (AHB), and 25 healthy controls (HC).Compared to patients with AHB and HC, the prevalence of Breg and Treg cells and the concentration of IL-10 in the supernatant of cultured peripheral blood mononuclear cells (PBMCs) were greatly increased in patients with CHB. A significantly decreased proportion of Th1 cells was also observed in patients with CHB and was demonstrated to have a negative correlation with the prevalence of Breg. Furthermore, depletion of Treg cells in the PBMCs of patients with CHB did not alter the frequency of Breg cells or their ability to produce IL-10, indicating little, if any, impact of Treg cells on the generation and maintenance of Breg cells.Our data indicate that increased Breg cells might be a major source of elevated IL-10 in CHB and represent a critical and independent regulatory force in the development of impaired anti-HBV immunity, consequently contributing to the pathogenesis of CHB.

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