Systemic insulin resistance has been well known. Recently, an important question has been raised regarding whether islet cells are resistant to insulin (insulin resistance of ?, ? and ? cells) due to the discovery of insulin receptor and its downstream insulin signaling pathways in islet cells. As a new study field of insulin resistance, the elucidation to this issue is crucial for the new insight into the mechanisms of insulin resistance per se and type 2 diabetes.

Objective To evaluate the effectiveness of periodontal mechanical therapy on periodontal health and interleukin-6 (IL-6) levels in gingival crevicular fluid (GCF) in type 2 diabetic patients with chronic periodontitis. Methods GCF samples were obtained with filter papers in first molar sites from 37 type 2 diabetic patients with chronic periodontitis. The randomized controlled and blinded clinical trial with a duration of six months was designed to compare effects between three groups of professional mechanical tooth cleaning (PMTC), i.e. coronal scaling (group Ⅱ) with periodontal initial therapy (group Ⅰ) and without clinical therapy (control group). The clinical periodontal index such as probing depth (PD), attachment loss (AL), modified bleeding index (mBI) and bacteria plaque index (PLI) were obtained with a Williams type periodontal probe. Laboratory examination including GCF volume, concentrations and total amounts of IL-6 in GCF were detected with ELISA method. Results Significantly decreasing trends of PD, AL, mBI, GCF volume and total amounts of IL-6 were observed in group Ⅰin all test period. The group Ⅱ had a significant reduction of PD at the third month as compared with baseline (⊿=0.36 mm, P＜0.05), and the other figures showed descending trends but didn′t present statistical significances. At the end of study, the group Ⅰand Ⅱ had significant reductions of GCF volume compared with increases of control group (0.96 μ1＞0.03 μ1mm＞-0.20 μ1, P＜0.05). Conclusions The sequential periodontal supra- and sub- gingival scaling has definitive effects on periodontal health improvement and on reducing the IL-6 level in GCF in type 2 diabetic patients.

Purpose:The current study analyzed the polymorp hisms of DNA repair gene XRCC1 and relationship between genetic variations and s usceptibility to lung cancer Methods:A case-control study of 111 patients with lung cancer a nd 210 normal residents as controls was conducted to detect XRCC1 polymorphisms at Arg399Gln loci . Genotypes were analyzed by PCR-based restriction fragment le ngth polymorphism(RLFP) techniques. Results:XRCC1 codon 399 heterozygous genotype Arg/Gln might hav e weaker protection effect on squamous cell carcinoma and reduce the risk of lun g cancer on smokers. Homozygous genotype Gln/Gln of XRCC1 codon 399 might increa se the risk of lung cancer and have synergistic effect with smoking. Conclusions:The results demonstrated that genetic polymorphism of XRCC1 DNA repair gene might contribute to the susceptibility to lung cancer a nd have synergistic effect with smoking.

Objecive To evaluate the causes of 60 cases for clinical failure in post crown.Methods Sixty cases with failure in post crown cure were entered the study.The causes of failure were analyzed.Results Among the 60 cases with failure in post crown cure,38 cases were due to the crown'loosing or broken away,12 cases with the broken dental crown,10 cases with periapical periodontitis,6 cases with broken root.Conclusions It was the loosing or broken away of post crown,periapical periodontitis,dental crown and root broken consist of the main causes for clinical failure in post crown.

0.05).AA-I could induce the TGF-?1 secretion by HK-2 cells(18.26?5.98 ?g/L,vs.control,P

Objective To investigate the expressions, clinical pathological features and prognostic significance of HIF-1?, JNK1 and multidrug resistance proteins: P-gp, MRP1 and LRP in human gastric carcinoma. Methods The tissue microarray technique and immunohistochemical EnVision method were used to detect HIF-1?, JNK1, P-gp, MRP1 and LRP proteins in 135 specimens of gastric carcinoma and 27 gastric mucosa tissues. Results In gastric carcinoma, the positive expression rate of HIF-1?, JNK1, P-gp, MRP1and LRP was higher than that in gastric mucosa tissues (P

[ Objective ] To observe the therapeutic effect of acupoint thread-embedding therapy for chronic gastritis. [Methods] Seventy cases of chronic gastritis were randomized into group A ( n = 36, treated with acupoint thread-embedding therapy) and group B (n = 34, treated with acupuncture); the changes of electrogastrogram (ECG) and plasma contents of gastrin (Gas) and substance P (SP) were compared before and after treatment. [Results] The effective rate was 88.89% in group A and 76.47% in group B, the difference being significant ( P 0.05 ) while postprandial ECG frequency differed from that before treatment ( P 0.05). [Conclusion] Acupoint thread-embedding therapy exerts certain effect for the treatment of chronic gastritis; its therapeutic mechanism may be related to the regulation of gastrointestinal function by regulating gastrointestinal hormone levels and by increasing ECG amplitude and frequency.

BACKGROUND: Ribavirin is easily diluted by lacrimal fluid and has low bioavailability. In situ ophthalmic gel changes from liquid drug to gel phase upon exposure to physiological conditions, resulting in an increase in the precorneal residence time of drugs. OBJECTIVE: To prepare ribavirin in situ ophthalmic gel and valuate its theological feature. DESIGN, TIME AND SETTING: In vitro controlled observation, performed at the Engineering Research Center of Modem Chinese Medicine Discovery and Preparation Technique, Ministry of Education, Tianjin University of Traditional Chinese Medicine between September and October 2006. MATERIALS: Sodium alginate, Carbopol, and ribavirin. METHODS: Sodium alginate (1% and 2%) and Carbopol (0.3%, 0.6%, and 2%) were combined at different proportions to prepare in sire ophthalmic gel, then in which ribavirin was added. MAIN OUTCOME MEASURES: Viscosity determinations of prepared different concentrations of formulations were determined using a cone and plate viscometer. RESULTS: Ribavirin in situ ophthalmic gel prepared with 1% sodium alginate and 0.6% Carbopol had the largest viscosity. The viscosity change was not influenced by the addition of ribavirin. The in situ ophthalmic gel prepared with sodium alginate and Carbopol changed to the gel phase upon exposure to lacrimal fluid. CONCLUSION: 1% sodium alginate and 0.6% Carbopol produced the best rheological feature and could prolonge the precorneal residence time of drug than that of conventional ophthalmic solution.

OBJECTIVETo analyze the clinical value of 24-hour urinary sodium determination in children with postural tachycardia syndrome (POTS).

METHODFifty-eight POTS children and 10 healthy children (control group) from Peking University First Hospital during June 2012 to May 2014 were enrolled. Their 24-hour urinary sodium and plasma sodium levels were compared. Correlation analysis was done between 24-hour urinary sodium and symptom scores in children with POTS. All patients were treated with oral rehydration salts. The POTS patients were divided into hyponatriuria group (urinary sodium < 124 mmol/24 h) and hypernatriuria group (urinary sodium ≥ 124 mmol/24 h). Kaplan-Meier curve was used to analyze the effects of different 24-hour urinary sodium levels in children with POTS receiving rehydration salts therapy.

RESULTThe 24-hour urinary sodium levels of children with POTS were significantly lower than that of control group ((110. 0 ± 45. 8) vs. (221. 3 ± 103. 6) mmol/24 h, t =3. 339, P = 0. 008), while no statistical significance was found in plasma sodium between the two groups ((139. 7 ± 2. 1) vs. (139. 7 ± 2. 3) mmol/L, t = 0. 082, P = 0. 935). Pearson correlation analysis showed that 24-hour urinary sodium and severity of symptoms in children patients were negatively correlated (r = - 0. 654, P < 0. 001) . Urinary sodium < 124 mmol/24 h was used as the cut-off value, there were 43 cases in hyponatriuria group and 15 cases in hypernatriuria group. The symptom scores were significantly higher in hyponatriuria group (10. 2 ± 3. 7 vs. 5. 0 ± 1. 8, P < 0. 001), there was no significant difference in other basic information and hemodynamic data between groups (P > 0. 05). Logistic regression analysis revealed that urine sodium < 124 mmol/24 h was independent risk factor for effectiveness of rehydration salts in POTS patients (OR = 0. 043, 95% CI:0. 004 - 0. 499, P = 0. 012). Kaplan-Meier survival analysis showed the long-term effect of patients receiving oral rehydration salts in hyponatriuria group was significantly better than that in hypernatriuria group (86. 0 % vs. 60. 0%, χ2 = 8. 471, P = 0. 004).

CONCLUSIONTwenty-four hours urinary sodium is a good indicaor for guiding children with POTS receiving rehydration salts therapy.

Case-Control Studies ; Child ; Fluid Therapy ; Hemodynamics ; Humans ; Postural Orthostatic Tachycardia Syndrome ; urine ; Rehydration Solutions ; Salts ; Sodium ; urine

Objective To investigate the influence of a combination of Chinese herbs,Astragalus membranaceus var.mongholicus and A ngelica sinensis (A&A)on the production and elimination of reactive oxygen species (ROS)and the underlying mechanism during the process of renal interstitial fibrosis in the obstructive kidneys of rats with unilateral ureteral obstruction(uuo).Method Male Wistar rats were randomly divided into control,sham,UUO and UAA (UUO+A&A)groups.The rats in UAA group were administered with A&A(14 g/kg)by oral gavage once daily:the ones in sham and UUO group were given with equal volumes of water.Three days after setting up models,pathological injury of renal tissue was evaluated.Level of total antioxidant capacity(T-AOC)and activity of CuZn superoxide dismutase(CuZn-SOD)in renal homogenates were measured bv spectrophotometry.Expression of NADPH oxidase subunits p47-phox,p22-phox and nintrotyrosine was analyzed by Western blot. Results Severe interstitial inflammatory cells infiltration, mild tubular atrophy and interstitial fibrosis were found in UUO group, which were alleviated by A&A administration. Compared to sham group, T-AOC of UUO group was not significantly changed, but the expression of the nitrotyrosine, NADPH oxidase subunits p47-phox and p22-phox was increased significantly (P<0.05). After A&A administration, T-AOC level was increased (2.5±1.1 vs 1.5±0.5, P<0.05) and the expression of nitrotyrosine was decreased (P< 0.05) in UAA group compared with UUO group. Additionally, the expression of p47-phox was reduced at day 3 (P<0.05), accompanied with a reduced expression of p22-phox (P< 0.05). CuZn-SOD activity was not significantly changed among the groups. Conclusion The inhibition of A&A in NADPH oxidase subunits p47-phox and p22-phox, which is responsible for reduction of oxidative stress, is associated with the alleviation of renal fibrosis in obstructive rat kidney.