1.Analysis on Application of Ginseng Prescriptions for Generations
Journal of Zhejiang Chinese Medical University 2017;41(7):601-604
[Objective]Combing the application of ginseng in the past physicians to make readers understand the efficacy of ginseng,and to be flexible in order to better serve human health.[Methods]Through consulting the ancient books of materia medica,the understanding of the ancient physicians and the application of hanren formulae were summarized and analyzed.[Results]Although the ancient physicians of the past believed that ginseng was subject to tonify five organs,quiet spirt,set soul,stop fright,remove pathogen,in addition to bright eye,happy,educational. long taking makes people fit and live longer,but with the development of the times,the Han dynasty in to nifying Qi torelieve thirst,tonify Qi for deficiency,the Tang dynasty in tonifying heart Qi,benefiting heart spirit,the Song dynasty in complement,benefiting Qi,the Ming dynasty in benefiting qi,Qing dynasty in tonifying Qi and Yin,modern in emergency first aid application.[Conclusion]Through the analysis of the application of ginseng in past dynasties,the complement ginseng can be more widely used in clinic,and better serve human health.
2.Stability of a rat model of type 2 diabetic mellitus induced by streptozotocin combined with high-fat feeding and its eye disease characteristics
Yang YU ; Shilei ZHENG ; Xuezheng LIU
Chinese Journal of Tissue Engineering Research 2015;(27):4389-4393
BACKGROUND:Streptozotocin-induced diabetic ophthalmopathy is commonly used in animal models, but the pathological changes are local that mainly emphasize on the retina. Little evidence is found about the animal models of the pathology of diabetic ophthalmopathy. OBJECTIVE:To investigate the long-term stability of type 2 diabetic melitus rat models induced by streptozotocin combined with high-fat feeding and to observe the characteristics of eye disease. METHODS: Rats were randomly divided into control group and diabetes group. Control group was given normal feeding, while diabetes group was given intraperitoneal injection of streptozotocin combined with high-fat feeding to establish diabetic models. RESULTS AND CONCLUSION:Compared with the control group, at 1 month after modeling, the fasting blood glucose levels increased, and the insulin sensitivity index decreased in the diabetic group (P < 0.05). Evans blue staining results showed that, at 3 months after modeling, retinal cel lesions exacerbated in the diabetic group; at 5 months after modeling, retinal blood vessels traveled in circuity and disorderly, accompanied by the leakage in the diabetic group, Evans blue content in the retina increased as the time after modeling went by (P < 0.05). Under transmission electron microscopy, at 5 months after modeling, the eye lenses in the diabetes group were flocculent pieces, which were the typical characteristics of cataract. Experimental findings indicate that the rat model of type 2 diabetic melitus induced by streptozotocin combined with high-fat feeding has a long-term stability, and its eye changes are consistent with the characteristics of diabetic ophthalmopathy. Therefore, it is an ideal animal model for diabetic ophthalmopathy.
3.Vertebral artery hypoplasia and its clinical significance
Shuangshuang YANG ; Yan JI ; Bo SONG ; Yuming XU ; Shilei SUN
International Journal of Cerebrovascular Diseases 2015;(3):209-213
Vertebral artery hypoplasia is a congenital vessel variation. Its incidence is from 1. 9 to 26. 5% . In recent years, studies have shown that vertebral artery hypoplasia may be a potential risk factor for posterior circulation infarction, especialy when it coexists with other cerebrovascular risk factors. Vertebral artery hypoplasia may also cause regional hypoperfusion and complex neurovascular regulation, and it also has a certaln link with migralne.
4.The role of activation of IL-6/STAT3 signaling in Th17/Tr imbalance of Kawasaki disease
Guobing WANG ; Chengrong LI ; Jun YANG ; Pengqiang WENG ; Shilei JIA
Chinese Journal of Microbiology and Immunology 2011;31(6):517-522
Objective To investigate the role of IL-6/STAT3 signaling in Th17/Tr imbalance of Kawasaki disease(KD). Methods Forty-eight children with KD and eighteen age-matched healthy children were consented to participate in this study. Protein concentration of IL-6 in plasma was measured by ELISA. Transcriptional levels of IL-17A, IL-17F, RORγt, Foxp3, SOCS1 and SOCS3 were assessed by real-time PCR. The proportion of CD4+CD25+Foxp3+ regulatory T(Tr) cells and mean fluorescence intensity(MFI) for phosphorylated-STAT3(pSTAT3) protein in CD4+ T cells was analyzed by flow cytometry. A quantitative methylation specific PCR based on SYBR Green was used to evaluate methylation status of CpG islands in SOCS1 exon2, three potential bind sites for STAT3 in 5'-untraslated region(5'-UTR) of SOCS3 in CD4+ T cells. Results (1)Compared with healthy volunteers, plasma IL-6 concentration and MFI for pSTAT3 in CD4+ T cells were elevated significantly during acute phase of KD[IL-6:(54.02±20.58) pg/ml vs (8.72±2.06) pg/ml, P<0.05;pSTAT3 MFI:(55.41±15.08) vs (9.35±3.76), P<0.05], and the two items in KD patients with coronary artery lesion (KD-CAL+) were found to be higher than those in KD patients without coronary artery lesion (KD-CAL-)[IL-6:(84.76±29.35) pg/ml vs (38.65±13.76) pg/ml, P<0.05;pSTAT3 MFI:(72.36±16.81) vs (46.93±13.57), P<0.05]. (2)Transcription levels of IL-17A, IL-17F and RORγt in patients with KD were significantly elevated (P<0.05) while the proportion of CD4+CD25+Foxp3+ Treg and expression levels of Foxp3 were detected to be lower than those in normal controls (P<0.05). The mRNA levels of IL-17A, IL-17F and RORγt in KD-CAL+ group were higher than those in KD-CAL- group(P<0.05), as well as expression level of Foxp3 were found to be lower in KD-CAL+ group(P<0.05). (3)The mRNA levels of SOCS1 and SOCS3 in CD4+ T cells increased significantly during acute phase of KD(P<0.05), while the two items in KD-CAL+ group were lower than those in KD-CAL- group(P<0.05). Furthermore, CpG islands in SOCS1 exon2 and the third potential bind site for STAT3 in SOCS3 5'-UTR were hypomethylated in acute KD, while those in healthy controls were fully demethylated(P<0.05). Demethylation levels of SOCS1 exon2 and the third potential bind site for STAT3 in SOCS3 5'-UTR in KD-CAL+ group were lower than those in KD-CAL- group(P<0.05). CpG islands in the other two bind sites for STAT3 in SOCS3 5'-UTR were fully demethylated among all the groups(P>0.05). ConclusionAberrant activation of IL-6/STAT3 signaling caused by hypomethylation of SOCS1 and SOCS3 might be one contributing factor to unbalance of Th17/Tr in KD.
5.The role of activation of toll-like receptors in immunological pathogenesis of Henoch-Schonlein purpura
Yuanyuan LI ; Chengrong LI ; Guobing WANG ; Jun YANG ; Shilei JIA
Chinese Journal of Rheumatology 2010;14(8):538-542
ObjectiveTo investigate the role of signal transduction of TLRs in the Henoch-Schonlein purpura (HSP). Methods Reverse-transcription PCR (RT-PCR) and real-time PCR were used to evaluate the levels of TLRs(1~10), MyD88, TRAF6, TRIF, IFN-α, IFN-β, IL-6, IL-1β, TNF-α, IP-10, RANTES,iNOS, Blys/April mRNA expression in peripheral blood mononuclear cells and their expression levels were compared using t test., while the concentration of plasma cytokines such as Blys、IFN-α、IFN-β、IL-6、IL-1、TNF-α was measured by enzyme-linked immunosorbent assay(ELISA).Expression levels of those genes were compared using t test. Results①Compared with the control group, the expression levels of TLR1, TLR2,TLR6, TLR5, TLR3, TLR7, TLR9 mRNA were up-regulated significantly(P<0.01), while no difference of TLR4 was detected (P>0.05).②Transcription levels of MyDg8(2.47±1.06) vs(0.73±0.22), TRAF6 (2.54±0.72)×10-3vs(0.70±0.20)×10-3, TRIF(3.18±0.86)×10-3vs(0.93±0.35)×10-3 were significantly up-regulated in acute phase of HSP (P<0.01).③The levels of IFN-α and IFN-β protein and mRNA were remarkable increased (P<0.01).④ The expression of cytokine/chemotactic factor such as IL-6, IL-1β, IP-10, RANTES,iNOS was higher than that of the control group(p<0.01), while TNF-αdid not change in children with HSP (P>0.05). ⑤ It was detected that the expression of Blys/April was higher than that of the control group(P<0.01). ConclusionExpressions of TLR1, TLR2, TLR6, TIR5, TLR3, TLR7, TLR9, MyD88, TRAF6, and TRIF are up-regulated during acute phase of HSP, suggesting that aberrant activation of TLRs triggered by microbes may be one of the initiating factors of immune aberrance in HSP. Over expression of cytokine/chemotactic factor or Blys/April owning to the aberrant activation of TLRs, may be correlated with immunological pathogenesis of HSP.
6.Investigation of the methylation status of Foxp3 gene during acute phase of Kawasaki disease
Guobing WANG ; Chengrong LI ; Jun YANG ; Pengqiang WEN ; Shilei JIA
Chinese Journal of Microbiology and Immunology 2010;30(7):678-682
Objective To investigate the methylation status of Foxp3 gene and its roles in immunological pathogenesis of Kawasaki disease(KD). Methods Thirty children with KD and eighteen agematched healthy children consented to participate in this study. Quantitative methylation specific polymerase chain reaction(MSQP) was used to assess the methylation status of Foxp3 promoter and regulatory T cells specific demethylated region(TSDR) in CD4+ T cells. The proportion of CD4+ CD25 + Foxp3 + regulatory T (Tr) cells was analyzed by flow cytometry. Transcriptional levels of CD4+ CD25 + Foxp3 + Tr associating genes (Foxp3, CTLA4, GITR, LAG3 and CCR8 ) and Foxp3-dependent molecules (UBD and LGAIS3)were measured by real-time PCR. Results ( 1 ) Demethylation level of Foxp3 promoter in CD4 + T cells from patients with KD was lower significantly than that of health subjects( P < 0.01 ), and increased significantly after treated with intravenous gamma globulin therapy(IVIG) (P < 0.01 ). No difference of demethylation level of TSDR region was observed among all groups ( P > 0. 05 ). ( 2 ) The proportion of CD4 + CD25 + Foxp3 + Tr in peripheral blood from patients with KD , as well as mRNA levels of Foxp3 gene in CD4+ T cells, was significantly lower than those of health subjects ( P <0. 01 ), and increases significantly after IVIG therapy (P <0.01 ). Significant positive correlations between demethylation level of Foxp3 promoter and the proportion of CD4 + CD25 + Foxp3 + Tr , or expression levels of Foxp3 in CD4 + T cells, were observed during acute phase of KD (CD4+CD25+ Foxp3+ Tr: r=0.76, P<0. 01; Foxp3: r=0.89, P<0. 01). (3)Transcription level of CD4+ CD25+ Foxp3+ Tr associating factors, such as CTLA4, GITR, LAG3 and CCR8, was significantly down-regulated in acute phase of KD(P<0. 01 ), and up-regulated to some extent after treated with IVIG(P <0. 01 ). Expression levels of Foxp3-dependent molecules UBD and LGALS3 in CD4 + T cells decreased significantly during acute phase of KD (P < 0.01 ), and basically recovered to the levels of health subjects( P < 0.01 ). Conclusion Decrease of demethylation level of Fopx3 promoter is correlated with immune dysfunction in Kawasaki disease.
7.Influence of SOCS1 and SOCS3 hypomethylation on homeostasis of Th1/Th2 in Kawasaki disease
Guobing WANG ; Chengrong LI ; Jun YANG ; Pengqiang WENG ; Shilei JIA
Chinese Journal of Rheumatology 2010;14(11):732-737
Objective To investigate the effect of SOCS1 and SOCS3 hypomethylation on homeostasis of Th1/Th2 in Kawasaki disease(KD). Methods Thirty-six children with KD and sixteen age-matched healthy children consented to participate in this study. Protein concentration of IL-6 in plasma was measured by ELISA. Transcriptional levels of SOCS1, SOCS3, T-bet, IFN-γ, GATA3 and IL-4 were assessed by realtime PCR. The proportion of Th1 and Th2 cells, and mean fluorescence intensity(MFI)for phosphorylated STAT3(pSTAT3)protein in CD4+ T cells was analyzed by flow cytometry. A quantitative methylation specific PCR based on SYBR Green was used to evaluate methylation status of CpG islands in SOCSl exon2, and three potential binding sites for STAT3 in 5'-untraslated region(5'-UTR)of SOCS3 in CD4+T cells. Comparisons between groups were performed with t-test. Results ①Compared with healthy volunteers, plasma IL-6 concentration[(51.8±16.3)pg/ml vs(8.6±2.0)pg/ml, respectively]and MFI for pSTAT3[(52±14)vs(10±4), respectively]in CD4+ T cells were elevated significantly during acute phase of KD(P<0.05), and the two items in KD patients with coronary artery lesion(KD-CAL+)were found to be higher than those in KD patients without coronary artery lesion(KD-CAL-)[IL-6:(87.2±27.4)pg/ml vs(36.2±12.8)pg/ml, P<0.05; pSTAT3 MFI:(75±15)vs(42±11), P<0.05]. ② The proportions of Th1 and Th2 cells and transcription levels of Th-associating factors(T-bet, IFN-γ, GATA3 and IL-4)in CD4+ T cells increased significantly in acute KD(P<0.05), while the rate of Thl div Th2 in KD patients was found to be lower than that in normal controls(P<0.05). In addition, the proportions of Th1 and Th2 cells and expressions levels of Th-associating factors in KD-CAL+ group were higher than those in KD-CAL-group, as well as the rate of Thl div Th2 cells in KD -CAL+ group were lower than that in KD-CAL- group(P<0.05). ③ The mRNA levels of SOCSl and SOCS3 in CD4+ T cells increased significantly during acute phase of KD(P<0.05), while the two items in KDCAL+ group were lower than those in KD-CAL- group(P<0.05). Furthermore, CpG islands in SOCSl exon2 and the third potential binding site for STAT3 in SOCS3 5'-UTR were hypomethylated in acute KD, while those in healthy volunteers were fully demethylated(P<0.05). Demethylation levels of the two items mentioned above in the KD-CAL+ group were lower than those in the KD-CAL-group(P<0.05). CpG islands in the other two binding sites for STAT3 in SOCS3 5'-UTR were fully demethylated among all the groups(P>0.05).Conclusion Relative insufficiency of SOCS1 and SOCS3 expression caused by hypomethylation may be one contributing factor for the imbalance of Th1/Th2 in KD.
8.Long-term outcomes and prognostic factors of surgical resection of hepatitis B virus-related solitary large hepatocellular carcinoma
Shilei BAI ; Hongjun XIANG ; Yong XIA ; Jun LI ; Pinghua YANG ; Feng SHEN
Chinese Journal of Digestive Surgery 2017;16(2):151-158
Objective To investigate the prognosis of patients with solitary large hepatocellular carcinoma (SLHCC) and with small hepatocellular carcinoma (SHCC),and analyze the risk factors affecting the prognosis of patients with SLHCC.Methods The retrospective case-control study was conducted.The clinicopathological data of 856 patients with hepatitis B virus (HBV)-related HCC who were admitted to the Eastern Hepatobiliary Surgery Hospital of the Second Military Medical University from January 2008 to December 2008 were collected.Of 856 patients,693 HCC patients with tumor diameter ≤5 cm were allocated into the SHCC group and 163 HCC patients with tumor diameter > 5 cm and with solitary,expansive growth and complete capsule tumors were allocated into the SLHCC group.Patients underwent preoperative antiviral therapy,laboratory and imaging examinations,and then surgical planning was determined based on the preoperative results.Observation indicators:(1) comparisons of clinicopathological features between the 2 groups:sex,age,Child-Pugh grade,HBeAg,serum level of HBV-DNA,platelet (PLT),albumin (Alb),total bilirubin (TBil),alpha-fetoprotein (AFP),tumor diameter,microvascular invasion,Edmondson-Steiner grade and liver cirrhosis;(2) treatment situations between the 2 groups:surgical procedures,operation time,volume of intraoperative blood loss,number of patients with blood transfusion and time of hepatic inflow occlusion;(3) survival analysis between the 2 groups;(4) prognostic analysis of patients with SLHCC.Follow-up using telephone interview and outpatient examination was performed once every 3 months within 2 years postoperatively and once every 6 months after 2 years postoperatively up to June 23,2014.Follow-up included tumor marker,liver function,serum level of HBV-DNA and abdominal B-ultrasound examination.The patients received reexamination of computed tomography (CT) or magnetic resonance imaging (MRI) once every 6 months or when there was suspicion of tumor recurrence or metastasis.Tumor recurrence or metastasis was confirmed through typical HCC imaging findings of CT and MRI,and PET/CT examination was conducted if necessary.Tumor-free survival time was from operation time to time of tumor recurrence,and overall survival time was from operation time to death or the last follow-up.Measurement data with normal distribution were represented as-x±s,and continuous variables were analyzed by the t test or Mann-Whitney U test.Measurement data with skewed distribution were described as M (range).Categorical variables were represented as count (percentage) and analyzed by the chi-square test or calibration chi-square test.The survival curve and survival rate were respectively drawn and calculated by the Kaplan-Meier method and Log-rank test.COX regression model was used for prognostic analysis.Results (1) Comparisons of clinicopathological features between the 2 groups:number of patients with PLT< 100× 109/L,with positive microvascular invasion and with liver cirrhosis and tumor diameter were 197,133,447,(3.1±1.1)cm in the SHCC group and 28,53,79,(8.9±3.3) cm in the SLHCC group,respectively,with significant differences between the 2 groups (x2=28.618,t =37.286,x2 =213.773,214.325,P < 0.05).(2) Treatment situations between the 2 groups:all the 856 patients underwent hepatectomy,including 326 with hepatic segments of resection ≥ 3 and 530 with hepatic segments of resection < 3.Operation time,volume of intraoperative blood loss,number of patients with intraoperative blood transfusion and with time of hepatic inflow occlusion > 20 minutes were 90 minutes (range,60-200 minutes),200 mL (range,20-5 200 mL),47,125 in the SHCC group and 110 minutes (range,60-230 min),300 mL (range,50-3 200 mL),31,58 in the SLHCC group,respectively.(3) Survival analysis between the 2 groups:all the 856 patients were followed up for 32.5 months (range,1.O-72.3 months).The median survival time,median tumor-free survival time,1-,3-,5-year overall survival rates and 1-,3-,5-year tumor-free survival rates were 56.2 months (range,1.6-75.8 months),39.5 months(range,1.0-75.0 months),90%,71%,58%,70%,48%,38% in the SHCC and 50.3 months (range,1.1-76.0 months),30.7 months (range,1.0-72.0 months),87%,59%,47%,65%,46%,33% in the SLHCC group,respectively,with no significant difference in tumor-free survival between the 2 groups (x2=0.514,P>0.05) and with a significant difference in overall survival between the 2 groups (x2=10.067,P<0.05).Stratified analysis:there were 117 SLHCC patients with 5 cm < tumor diameter < 10 cm and 46 SLHCC patients with tumor diameter > 10 cm.The 1-,3-,5-year overall survival rates and 1-,3-,5-year tumor-free survival rates were 91%,65%,53%,70%,48%,35% in 117 SLHCC patients with 5 cm < tumor diameter < 10 cm,respectively,with no significant difference compared with SHCC group (x2=1.832,0.042,P>0.05).The 1-,3-,5-year overall survival rates and 1-,3-,5-year tumor-free survival rates were 78%,46%,31%,49%,39%,30% in 46 SLHCC patients with tumor diameter > 10 cm,respectively,with significant differences compared with SHCC group (x2=21.136,4.097,P<0.05).(4) Prognostic analysis of patients with SLHCC:results of univariate analysis showed that serum level of HBV-DNA,tumor diameter and microvascular invasion were risk factors affecting postoperative 5-year tumor-free survival rate of SLHCC patients (x2 =5.193,3.377,5.509,P<0.05);sex,serum level of HBV-DNA,tumor diameter and microvascular invasion were risk factors affecting postoperative 5-year overall survival rate of SLHCC patients (x2=4.546,18.053,7.780,10.569,P<0.05).Results of multivariate analysis showed that serum level of HBV-DNA ≥ 104 U/mL,tumor diameter > 10 cm and positive microvascular invasion were independent risk factors affecting postoperative 5-year tumor-free survival rate of SLHCC patients [HR =2.77,1.85,1.86,95% confidence interval (CI):1.74-4.40,1.16-2.94,1.17-2.96,P< 0.05] and affecting postoperative 5-year overall survival rate of SLHCC patients (HR=2.73,1.98,1.69,95%CI:1.72-4.33,1.23-3.17,1.04-2.72,P<0.05).Conclusions There are similar prognosis between SLHCC patients with 5 cm < tumor diameter < 10 cm and SHCC patients,however,prognosis of SLHCC patients with tumor diameter > 10 cm is worse than that of SHCC patients.Serum level of HBV-DNA ≥ 104 U/mL,tumor diameter > 10 cm and positive microvascular invasion are independent risk factors affecting prognosis of SLHCC patients.
9.Twenty cases of cerebral venous sinus thrombosis presented as isolated intracranial hypertension
Yang LU ; Shilei CUI ; Rong YAN ; Houliang SUN ; Zhenchang WANG ; Xiaojun ZHANG
Chinese Journal of Neurology 2013;(2):112-116
Objective To investigate the clinical and image features of cerebral venous sinus thrombosis (CVST) presented as isolated intracranial hypertension.Methods The medical records of patients with diagnosis of CVST presented as isolated intracranial hypertension were reviewed.Clinical features and imaging data were retrospectively analyzed.Results Twenty cases of CVST were included,all these patients were clinically presented as isolated intracranial hypertension.The male to female ratio was 13:7,and the average age was (38.3 ± 11.7) years old.None of the patients was obesity.The visual acuity was lower than 0.1 in 42.5% (17/40)of the eyes.Possible risk factors relevant to CVST were found in 11 cases (55%),including head trauma for 4 cases,autoimmune disease for 2 cases,and other causes of single case including spontaneous abortion,phlebitis,otitis media postoperative,trigeminal nerve microvascular decompression surgery and obstructive sleep apnea syndrome.Image analysis showed that lateral sinus thrombosis was involved in 85% (17/20) of the patients,while superior sagittal sinus was involved in 35% (7/20),and 65% (13/20) of the patients were isolated lateral sinus thrombosis.Conclusions Young male predominance is found in CVST patients which presented as isolated intracranial hypertension but severe visual function loss.Risk factors such as head trauma are commonly found in these patients.Most of the patients are isolated lateral sinus thrombosis,with lateral sinus narrowing as the most common abnormal findings in magnetic resonance venogram.
10.Investigation of the change of CD4~+ T cell subset from children with type 1 diabetes
Shilei JIA ; Chengrong LI ; Guobing WANG ; Xia LIU ; Jun YANG ; Ying ZU ; Dan FU
Chinese Journal of Microbiology and Immunology 2010;30(4):309-314
Objective To investigate the changes of CD4~+ T cell subset in the role of immuno-pathogenesis of type 1 diabetes mellitus(T1DM). Methods Real-time PCR was used to evaluate the ex-pression levels of transcriptional factors (T-bet, GATA-3, Foxp3, ROR-γt), cytokines (IFN-γ, IL-4, IL-10, IL-17A) and negative regulatory factors (CTLA-4, GITR) mRNA from CD4~+ T cells. The proportions of Th1, Th2, Tr and Th17 cells in peripheral blood were detected by flow cytometric analysis. Plasma cyto-kine (IFN-γ, IL-4, TGF-β and IL-6) concentrations were measured by enzyme-linked immunosorbent assay (ELISA). Results (1) The proportions of Th1 cells in peripheral blood from children with T1DM were siguificanfly increased than that of healthy controls, and proportions of Th2 were decreased (P < 0.01). There were no significant differences between diabetic patients and healthy controls regarding the proportions of Tr cells and Th17 cells(P >0.05). (2) Transcription levels of T-bet and IFN-γ mRNA were significantly up-regulated, while GATA3 and IL-4 were significantly down-regulated in children with T1DM. The mRNA expression levels of Tr negativity regulatory factors such as IL-10, CTLA-4 and GITR were lower in CD4~+ T cells from children with TIDM compared with the controls(P <0.01). There were no statistically differences to be observed in mRNA expression levels of ROR-γt and IL-17A genes between two groups(P > 0.05).(3) In comparison with controls, serum concentrations of IFN-γ or IL-4 were remarkable increased or de-creased respectively (P < 0. 01), while TGF-β and IL-6 did not change in children with T1DM (P > 0.05). Conclusion The Th1/Th2 imbalance might be play an important role in immunopathogenesis of T1DM. Functional deficiency of Tr cell might further exacerbate Th1/Th2 imbalance and lead to disturbance of cellu-lar immune response.