Objective To investigate the change of peripheral blood CD4+CD25+ regulatory T cells (Tr) in patients with idiopathic thrombocytopenic purpura (ITP), and to analyze its role in the pathogenesis of ITP.Methods Anticoagulated venous blood was collected from ITP patients (ITP group,n=35) and healthy controls (healthy control group,n=35). T lymphocytes were isolated and purified with human CD3+ T cell enrichment columm. The percentage of peripheral blood CD4+CD25+ regulatory T cells was detected by immunofluorescence staining (PE-anti-CD4 monoclone antibody and FITC-CD25 monoclone antibody) and bicolor flow cytometry by CD25/CD4 gating.Results The number and constituent ratio of CD4+CD25+T cell were significantly lower in ITP group than those of healthy control group (P<0.05).Conclusion There is peripheral blood celluar immunological function disorder in ITP patients, and decrease of CD4+CD25+ T cell population may be involved in the pathogenesis of ITP.

Chronic Disease ; Heart Failure ; drug therapy ; Humans

Animals ; Central Nervous System Diseases ; drug therapy ; Drug Design ; Drugs, Chinese Herbal ; Humans ; Inflammation ; drug therapy

Objective:To detect the correlativity between clinical periodental indexes and C-terminal telopeptides of type I collagen (CTX)concentration in gingival crevicular fluid(GCF).Methods:77 teeth with periodontitis in 60 patients from the international Bethune peace hospital were included.The concentration of CTX in GCF was detected by enzyme-linked immunosorbent assay.The plague indexe(PL),gingival indexe(GI),probing depth(PD)and attachment loss (AL)level were recorded at clinic.The correla-tion of CTX concentration and clinic indexes was analysed by Kruskal-Wallis test using SPSS 1 1 .0 software.Results:The Spearman correlation coefficient of PL,GI,PD and AL with CTX was 0.386(P <0.01 ),0.366(P <0.05),0.382(P <0.05)and 0.31 4(P <0.05)respectively.Conclusion:PL,GI,PD and AL are positively correlated with the concentration of CTX in GCF(P <0.05).

Objective To investigate the correlation of plasma heme oxygenase-1 (HO-1) level and type 2 diabetes mellitus (T2DM). Methods The outpatient with type 2 diabetes mellitus (T2DM) undergoing oral glucose tolerance test and healthy individuals with physical examination were divided into T2DM group and healthy control group, the differences between the two groups in HO-1 and methane dicarboxylic aldehyde (MDA), mean fluorescence intensity (MFI), homeostasis model assessment of insulin resistance (HOMA-IR) and fasting blood glucose (FBG) were comparatively analysed , and analyzed the correlations between HO-1 and reactive oxygen species (ROS) MFI, MDA, HOMA-IR and FBG. Results The type 2 diabetes group in MDA and MFI, the expression rate of HO-1 were higher than those of control group (P<0.05), correlation analysis of expression of HO-1 was positively correlated with MFI, MDA (r=0.489, 0.763, P<0.05) in the T2DM group, HO-1, HOMA-IR and FBG were significantly higher than the healthy control group, the difference was statistically significant(P<0.05). The expression of HO-1 and HOMA-IR and FPG levels were positively correlated in the T2DM group (r=0.271, 0.426, P <0.05). Conclusion T2DM patients with hyperglycemia and oxidative stress, plasma HO-1 expression is significantly increased, HO-1 is related to oxidative stress, insulin resistance and hyperglycaemia, which has certain value on clinical assessment of T2DM and therapeutic efficacy.

objective To investigate the recurrence of stroke,clinical prognosis and vascular changes in patients with ischemic stroke due to middle cerebral artery stenosis. Methods The ischemic stroke patients with symptomatic middle cerebral artery stenosis were enrolled continuously and followed up prospectively for six months. The recurrence of ipsilateral stroke,clinical prognosis and dynamic changes of vessels were analyzed. Results Eighty patients were included,and 20.0% of the patients(16 cases)presented with recurrence of ipsilateral ischemic stroke and 56 cases (70.0%)with a good outcome(modified Rankin scale[mRS]≤1)during the 6 months follow-up;38.6% patients (27 cases) presented with significant vascular changes with progression in 12 cases (17.1%)and regression in 15 cases (21.4%). Conclusion The patients with simple symptomatic middle cerebral artery stenosis have an high rate recurrence of ipsilateral stroke but have good prognosis;Lesioned artery of the majority of patients in the short period after stroke was stable,but vascular stenosis in some patients could appear progression or remission.

BACKGROUND:Coenzyme Q10 participates in the electron transport of respiratory chain and possesses antioxidant, anti-apoptotic and anti-inflammatory properties. It has achieved good outcomes in cardiovascular disease, diabetes and cancer. Coenzyme Q10 may also have a certain application value in the fields of diabetes and periodontitis. OBJECTIVE:To observe the effect of coenzyme Q10 on the expression of interleukin-17 and interleukin-23 in gingival tissue of type 2 diabetic rats with periodontitis.METHODS:Forty-eight healthy male Wistar rats were randomly divided into 3 groups: control, periodontitis+ diabetes+physiological saline and periodontitis+diabetes+coenzyme Q10. Rats in the control group were fed with normal diet and water. Rats in the periodontitis+diabetes+physiological saline and periodontitis+diabetes+ coenzyme Q10 groups were subjected to induction of periodontitis using the method of silk ligation and type 2 diabetes by feeding a high-fat and high-sugar diet and intraperitoneal injection of streptozotocin. After successful modeling, rats in the periodontitis+diabetes+coenzyme Q10 group were intragastricaly administered coenzyme Q10 for 8 successive weeks. Rats in the periodontitis+diabetes+physiological saline group were administered equal amount of physiological saline. At the end of 2nd, 4th and 8th weeks after drug administration, four rats were randomly selected and sacrificed. The expression levels of interleukin-17 and interleukin-23 in gingival tissue were detected by immunohistochemistry. RESULTS AND CONCLUSION: At the end of 8th week, interleukin-17- and interleukin-23-positive expression in the periodontitis+diabetes+physiological saline group was significantly higher than that in the periodontitis+ diabetes+coenzyme Q10 group (P < 0.05). Coenzyme Q10 can reduce the expression levels of interleukin-17 and interleukin-23 in gingival tissue of type 2 diabetic rats with periodontitis, and aleviate periodontal tissue inflammation of type 2 diabetic rats with periodontitis.

Objective To study and assess clinical application of two Nickel-Titanium(NiTi)rotary instru- ments,namely ProTaper and Hero 642,in preparation of root canals.Methods 125 teeth were divided into three groups and respectively instrumented by stainless K-files,ProTaper or Hero 642 rotary instruments.All teeth were obturated with lateral condensation method.The efficiency of preparation and obturation was analyzed with radio- graphs.Results NiTi rotary instruments were better in keeping the curvature and flow of curved canals than stain- less K files.There was no transportation,apical blockage and ledge in NiTi groups.The operative time was shorter and endodontic flare-up seldom occurred in NiTi groups.Conclusion The NiTi rotary instrumentation technique could be used to prepare curved root canals effectively and quickly.The future use of NiTi engine-driven rotary in- strument appeared to be promising.

Objective To investigate the indications and methods of retaining only portal vein for the hilar cholangiocarcinoma radical resection to improve the therapeutic efficacy. Methods Six patients with hilar cholangiocarcinoma underwent left hepatectomy and extrahepatic bile duct excision. Tumor invaded hepatic artery was resected and fight hepatic duct-jejunum anastomosis was made during July 2006 to December 2007. Results There was no mortality. Bile leakage developed in one case and was cured by drainage. No liver failure developed postoperatively. All 6 cases were followed up for 10 - 23 months, and all were still alive. Conclusions Retaining only portal vein for the treatment of hilar cholangiocarcinoma radical resection under definite indications is safe.

Objective To evaluate the diagnostic rate and treatment effect of close renal trauma.Methods The clinical data of 129 cases of close renal trauma were analyzed retrospectively. Results Lumbago or bellyache occurred in 109 cases,hematuria 113 cases,coexistent injuries of other organs 81 cases. 129 cases were examined by type B-ultrasonography, 102 cases by CT scan open operation on 17 cases and others were treated non-operatively. 118 cases have been followed up for 3 months to 56 months with normal urine routine and IVU.Conclusions Usually urine inspection and B-ultrasonography were simple,instant reliable and safe. The accurate diagnosis rate was higher with CT scanning,CT scan was helpful in detecting the degree of renal injury and any coexistent injuries,and to estimate the treatment effect. Laparotomy should undertaken for the case of severe injury or with coexistent injuries in rime.