Objective To investigate the cytocompatibility of the liching liquids of Co-Cr alloy and Ti alloy on human gingival fibroblasts (HGF). Methods The HGF were treated in vitro with leaching liquids of Co-Cr alloy and Ti alloy, respectively. The DMEM cell medium containing 10% fetal bovine serum was served as a negative control. The viability of HGF treated by two dental alloys were evaluated by means of MTT, and the contents of intracellular reduced glutathione (rGSH) were assayed by kits. The tumor necrosis factor-α(TNF-α) contents were determined in the culture supernatant by ELISA in two groups. The effects of these alloys on the expression of caspase-3 were examined by real time-PCR method. Results Compared with the control group, HGF treated with Co-Cr alloy leaching liquids showed a lower viability ( P ＜0.05), while Ti alloy leaching liquid promoted the proliferation of HGF. In Co-Cr alloy group, the rGSH content was significantly decreased (P＜0.05), while TNF-α content was significantly increased (P＜0.05) compared with control group. There were no significant differences in rGSH and TNF-α contents between the Ti alloy group and control group (P＞0.05). The expression of caspase-3 was significantly higher in Co-Cr alloy group than that of control group (P＜0.05), while there was no significant difference in the expression of caspase-3 between Ti alloy group and control group. Conclusion Results suggest that Co-Cr alloy possesses cytotoxicity, while there is better cell compatibility for Ti alloy.

10.3969/j.issn.1000-8179.2013.12.007

Objective To investigate the correlation between epicardial fat thickness (EAT) and the risk factors of coronary artery disease (CAD) as well as the severity of coronary lesions with echocardiography,Methods According to the results of coronary angiography,80 patients underwent coronary angiography were divided into coronary heart disease group (CHD group,4 6 cases) and without coronary heart disease group (control group,34cases),and according to coronary artorrythe severity,CHD goup was divided into subgroups of single-vessel disease (24 cases) and multivessel disease subgroup(22 cases).Tho epioardial fat thickness on the free wall of the right ventricle was measured at end-systole from the para-sterna,long-axis vlews.The relationship between EAT and the risk factors of CAD (such as age,gender,hypercholesterolemia,hypertenston,diabetes,smoking,family CAD history) as well as the severity of coronary lesions were analyzed.Results EAT in multivessel disease CAD group [(8.85 ± 1.44)mm] was significantly higher than that in single vessel CAD group[(6.86 ± 1.09) mm] and control group [(4.58 ± 1.12) mm] (all P ＜ 0.01).EAT was significantly related with the risk factors of CAD.Although the risk factors of CAD such as age,blood glucose,blood pressure were adjusted,EAT was still independently associated with CAD (OR:5.394,95 ％ CI:1.700 ～ 17.1 12,P =0.004).Concluslon The level of EAT is significantly correlated with CAD and the severity of coronary lesions.

Objective To evaluate influence of benzo(a)pyrene on cell cycle of the human embryonic lung fibroblast at different synchronous stage. Methods Cell cycle distribution were detected by flow cytometry(FCM). Cells were synchronized at cycle G0 stage through 48 hours serum starvation and reenter cell cycle together at a synchronous state after resupplied with whole growth medium contain good serum. Benzo(a)pyrene with a series concentrations were directly used or metabolized active by traditional and modified metabolize active methods through preincubation of S9 and were treated as regent to HELF cells mostly synchronized at G1, S or G2-M stage respectively. Then cell cycle distribution changes were detected 12 h after treatment. Results Serum starvation(48 hours) could synchronize HELF at G0-G1 stage effectively and 10-12 h, 16-18 h, 22-24 h were cycle phase change distinctly time after serum restimulated. Cells were synchronized at G1, S and G2-M stage mostly. Benzo(a)pyrene influence cycle distribution little without metabolize active, while modified methods could metabolize active benzo(a)pyrene well and avoided disturbing effect of S9 on cell cycle in traditional method. Except 2 ?mol/L benzo(a)pyrene treated at 22 h after restimulated caused the percentage of cells at S stage increase, most treatment induced the percentage of cells at S stage decrease which was associated obviously with the increasing dosages. The percentage of cell at S stage decrease at 16 h were more remarkable than other times and the percentage of cell at G2-M increase correspondingly. While the percentage of cell at G1 increase and the percentage of cell at G2-M decrease were obsered when benzo(a)pyrene treated at 10 h and 22 h after restimulated. Conclusion Serum starvation 48 hours and restimulate can synchronize HELF at different stage effectively. Modified metabolize active method is suitable for cell cycle research. Primary influence of benzo(a)pyrene on cell cycle is the decreased percentage of cells at S stage, G1 arrest, G2-M arrest and G1 arrest were occurred when benzo(a)pyrene were treated at G1, S and G2 stage respectively.

The bystander effect(BE) plays an important role in the gene therapy of cancer by the herpes thymidine kinase/ganciclovir(HSV-TK/GCV) system.It enhances the therapeutic efficacy of this system.Up to now,the exact underlying mechanism of the bystander effect remains unclear.A large body of evidence has indicated a close correlation of the connexin expression and gap junction in the targeted cells to the bystander effect.Here the publications concerning the relationship of gap junction with the bystander effect in the HSV-TK/GCV treatment have been reviewed.The possible cell death signals that can be transferred through gap junction to induce the bystander effect are also discussed.

Objective B-type natriuretic peptide(BNP) have been used widely in the diagnosis and prognosis of cardiogenic diseases, but the association between BNP concentrations and non-cardiogenic critical illness is unknown. Our study aims at investigating the role of natriuretic peptide testing for predicting 28-day mortality of non-cardiogenic critically ill patients in emergency department (ED). Methods A total of 255 non-cardiogenic critically ill patients treated in the emergency department were prospectively enrolled and a sample of blood was obtained for BNP measurement from each patient. A variety of clinical and laboratory variables were recorded. After 28 days, the vital status of each patient was ascertained and the association between BNP values at presentation and mortality was assessed. Results 71 patients died during the 28-day observation period. Median BNP concentrations at presentation among decedents were significantly higher than those of survivors (326. 0 ng/L versus 50. 9 ng/L,P <0. 001). The optimal BNP cut point for predicting 28-day mortality was 114. 0 ng/L. In a multivariate analysis (Cox-regression), a BNP concentration greater than 114. 0 ng/L(RR 7. 268, 95% CI 3. 864-13. 672) and an Acute Physiology and Chronic Health Evaluation Ⅱ (APACHE Ⅱ) scores greater than 20 (RR 3. 330, 95% CI 1. 815-6. 109)were the independent predictors of the 28-day mortality. BNP concentration alone had an area under the receiver operating characteristic curve (AUC) of 0. 825 for predicting mortality. Conclusions BNP concentrations at presentation are strong predictor of 28-day mortality in patients with non-cardiogenic critically ill patients in ED, which is better than Rapid Acute Physiology Score (RAPS) , Rapid Emergency Medicine Score (REMS) and APACHE Ⅱ score.

Objective To evaluate the value of uhrasonography in diagnosing the occult dorsal carpal ganglion. Methods Sixteen patients with chronic dorsal wrist pain received ultrasound examination. Eleven ofthem were treated with surgical therapy. And they were followed up for 1-8 months. Results The ultrasound characteristics of oecuh dorsal carpal ganglion were depicted as follows;①The dorsal cortical bone of scaphoid and lunate was continued and without damage. ② An oval anecho lesion with clear boundany, smooth ganglion wall, lateral shandowing and posterior enhancement could be detected in the dorsal part of scapholunate joint. ③Color Doppler flow imaging showed there was not obvious blood flow signals inside and around the ganglion. Conclusions Uhrasonography could be acted as a routine examination technique after the X-ray examintion in the diagnosis of the the occult dorsal carpal ganglion.

OBJECTIVETo explore the effect of Chinese drugs for activating blood circulation and removing blood stasis (CDABCRBS) on carotid atherosclerotic plaque and long-term ischemic cerebrovascular events.

METHODSBy using open and control method, effect of 4 groups of platelet antagonists, platelet antagonists + CDABCRBS, platelet antagonists +atorvastatin, platelet antagonists +atorvastatin +CDABCRBS on carotid atherosclerotic plaque and long-term ischemic cerebrovascular events of 90 cerebral infarction patients were analyzed.

RESULTSThrough survival analysis, there was no statistical difference in the effect of the 4 interventions on the variation of carotid stenosis rates or ischemic cerebrovascular events (P > 0.05). The occurrence of ischemic cerebrovascular events could be postponed by about 4 months in those treated with platelet antagonists + CDABCRBS and platelet antagonists + atorvastatin +CDABCRBS. By multivariate Logistic analysis, age, hypertension, and clopidogrel were associated with stenosis of extracranial carotid arteries (P <0.05). Age, diabetes, aspirin, clopidogrel, CDABCRBS were correlated with cerebrovascular accidents (P < 0.05).

CONCLUSIONSWhether or not accompanied with hypertension is an influential factor for carotid stenosis, but it does not affect the occurrence of ischemic cerebrovascular events. CDABCRBS could effectively prolong the occurrence time of ischemic cerebrovascular events.

Adult ; Aged ; Brain Ischemia ; etiology ; Carotid Artery Diseases ; complications ; drug therapy ; Drugs, Chinese Herbal ; therapeutic use ; Female ; Humans ; Male ; Middle Aged ; Phytotherapy ; Stroke ; etiology

Objective To study the curative effect of praziquantel against juveniles of Paragonimus westermani and the dynamic changes of T lymphocytes and their subpopulations in infected mice after treatment. Methods Mice infected with metacercariae of P. westermani were treated with praziquantel 10 days after infection for examining the curative effect. Results Mice infected orally each with 30 metacereariae of F. westermani were treated with praziquantel at doses of 400,500 and 600 mg/(kg?d) respectively for 3 d, the juvenile reduction rates were 71.01 % ? 10.38% ,82.29% ? 7.92% and 95.83% ? 3.24% respectively; when the mice were infected with 80 metacercariae and treated with a dose of praziquantel 600 mg/(kg?d) for 3 d, the worm reduction rate was 84.49% ?10.91%. T lymphocytes and their subpopulations began to increase at 1 wk and returned to normal at 8 wk after praziquantel treatment. Conclusion The efficacy of praziquantel against juvenile P. westermani was poorer than that against adult worms ; the efficacy was relevant to the drug dosage and the number of metacercariae infected. The T lymphocytes and their subpopulations may be regarded as an index for curative effect.

Objective To investigate the significance of detecting the level of CRP,TNF-α,IL-6 and IGF-1 in the patients with type 2 diabetes mellitus(T2DM).Methods Sixty patients with T2DM in the Pingliang Municipal People′s Hospital from February 2013 to March 2015 were selected as the observation group And contemporaneous 60 individuals undergoing healthy physical exami-nation were selected as the control group.The levels of FBG,2 hBG,FINS,HbA1c,CRP,TNF-α,IL-6 and IGF-1 were detected in these two groups.The correlation between CRP,TNF-α,IL-6 and IGF-1 with FBG,FINS and HbA1c were analyzed.Results The levels of FBG,2 hBG and HbA1c in the observation group were significantly higher than those in the control group,the difference was statistically significant (P<0.05).The FINS level in the observation group was significantly lower than that in the control group,the difference has statistically significant (P<0.05).The levels of CRP,TNF-α,IL-6 and IGF-1 in the observation group were (8.46±2.45)mg/L,(18.56±4.23)ng/L,(13.53±3.24)pg/L and (125.33±23.14)ng/L respectively,which were signifi-cantly higher than (3.23±1.02)mg/L,(11.25±3.01)ng/L,(7.24±1.78)pg/L and (98.45±18.56)ng/L in the control group, the difference was statistically significant(P<0.05).CRP,TNF-αand IL-6 were positively correlated with FBG,FINS and HbA1c;IGF-1 was negatively correlated with FBG and HbA1c.Conclusion Detecting the CRP,TNF-α,IL-6 and IGF-1 levels can provide a basis for the diagnosis of T2DM and thinking for its treatment.