Objective: To evaluate shaping ability of nickel-titanium rotary instruments (Hero 642) in curved root canals. Methods:The computer assistant measure system of simulated root canal was used for quantitative analysis of root shape in eight simulated root canals during nickel-titanium rotary instruments (Hero 642) shaping process. Results:Nickel-titanium rotary instruments (Hero 642) could keep the curved angles in simulated canals very well. The cutting of Hero 642 in curved root canals was balanced and there was almost no transportation of canals central lines when the simulated canals were prepared to 0.02 taper 25~# and 30~# files. Conclusion:Nickel-titanium rotary instruments (Hero 642) has good shaping ability. In preparation of highly curved canals, the master apical file (MAF) may be Hero 642 0.02 taper 30# files.

Objective To study the expressions of MCM5 and Ki67 in cervical intraepithelial neoplasia (CIN) and cervical cancer and their clinical significance. Methods Immunohistochemistry (S-P method) was used to detect the expressions of MCM5 and Ki67 in 50 CIN and 49 cervical cancer. Results The positive expression rate of MCM5 and Ki67 in normal cervical epithelium, CIN Ⅰ-Ⅱ, CIN Ⅲ and cervical cancer were 26.7%, 72.0%, 80.0%, 97.9% and 10.0%, 32.4%, 84.0%, 97.9% respectively. The positive expression rate of MCM5 was significantly different between CIN and cervical cancer (P

Objective To investigate the change of serum resistin levels in patients with obstructive sleep apnea hypopnea syndrome(OSAHS).MethodsPolysomnography(PSG)was performed in 58 patients with OSAHS and in 26 controls without differences in age and BMI.Serum resistin levels were measured by ELISA.Results(1)Serum resistin levels were significantly higher in patients with OSAHS than those in control group.(2)FPG levels were significantly higher in patients with OSAHS than those in control group.(3)TG levels were significantly higher in patients with OSAHS than those in control group.(4)Serum resistin levels were correlated positively with FPG in obesity patients with OSAHS、nonobesity patients with OSAHS and nonbesity controls group.(5)Serum resistin levels were correlated positively with TG in obesity patients with OSAHS、nonobesity patients with OSAHS and nonbesity controls group.(6)Serum resistin levels were correlated positively with BMI in OSAHS.(7)Serum resistin levels were correlated negatively with LSaO2 in OSAHS.(8)Serum resistin levels were correlated positively with AHI in OSAHS.ConclusionDetermination of serum resistin levels may be the predictors of the severity of OSAHS and it also contributes a lot taking measures to prevent and control the OSAHS complication occurrence and reduce the mortality.

Puerarin is one of the most important effective components of Pueraria lobata which exhibited classic estrogen-like biological activities and had remarkable cardiovascular protections in vivo and in vitro experiments. These protections of puerarin are mainly exhibited on improving the myocardial cells membrane potential and arrhythmia based on effecting the Na+, K+ , and Ca2+ channels,resisting myocardial fibrosis damage, diastolic effect on blood vessels, promoting angiogenesis, resisting calcification and atherosclerosis, improving blood flow, antiplatelet aggregation, reducing lipid and resisting diabetes. The main mechanisms are to improve the membrane potential and reduce cardiovascular damage caused by inflammation, oxidative stress and apoptosis, and the main regulated signal pathways are the PI3K/Akt, the NF-kappa B and the caspases.
Animals ; Cardiovascular Diseases ; genetics ; metabolism ; prevention & control ; Drugs, Chinese Herbal ; pharmacology ; Humans ; Isoflavones ; pharmacology ; Oxidative Stress ; drug effects ; Protective Agents ; pharmacology ; Pueraria ; chemistry ; Signal Transduction ; drug effects

ObjectiveTo analysis the current conditions of the main chronic disease,satisfaction,reactive and trust,then to make the control policy in community health management base in China.Method Using the questionnaire by oneself,which the contents include prevalence,understand rate,management rate,behavior correct rate,control rate,medicine obey and satisfaction,reactive and trust of 2009 the chronic disease in 2009.ResultsThe total investigate people was 1 189 456.The hypertension prevalence is 8.01％,the diabetes prevalence is 4.41％.To compare with Shanghai and Jilin in 6 aspects,the prevalence,understand rate,management rate,control rate,medicine obey rate is higher in Shanghai.But behavior correct rate is lower in Jilin.Survey of hypertension prevalence rate was decreased,awareness,management,rates,rates of behavior modification,medication compliance rates and control rates of growth from 2009 to 2010.Satisfaction,responsiveness and trust indicators investigated a total of 2268 people,the process of service satisfaction to 93.43％,93.78％ overall satisfaction; to have the privacy of reactivity to 94.41％ of the basic amenities and clean comfortable response of the 90.45％ ; of treatment services for the 92.59％confidence,the confidence of the cost for the 93.98％ of the overall trust in institutions is 92.76％.ConclusionsThe government must take main principle in chronic disease control.We must enhance base construct of community health management and increase management level of chronic disease.We must enhance practitioner's culture ang increase knowledge of chronic disease management.

OBJECTIVE:To discuss the quality problem commonly seen in the marketing and use of decoction pieces of traditional Chinese drugs and their quality control method. METHODS: We reviewed the pertinent Chinese journals and on which an aggregate analysis and evaluation was performed. RESUTLS: Drug name problem, slice cutting specification problem, the problem of the name of processed drugs in set recipe preparations and counterfeit problem etc were commonly seen in the marketing and use of decoction pieces of traditional Chinese drugs. CONCLUSION: To standardize drug name, drug processing and slice cutting specifications of Chinese crude drugs, and to prohibit counterfeits and conduct regular sampling inspection can effectively keep the quality of decoction pieces of traditional Chinese drug under control.

This paper systematically analyzed the concept of patients'trust based on a study of the literatures and compared patients'trust with patients'satisfaction. The conclusion is that patients'trust plays a key role on the quality improvements of medical services.

Total 2625 cases of pulmonary sequestration were collected from literatures of Chinese National Knowledge Infrastructure from 1998 to 2008. The age, gender, clinical symptoms, chest CT scan,chest X-ray findings, lesion location, supplying artery, venous reflux, and preoperative misdiagnosis of 2625 cases were retrospectively reviewed. The male: female ratio of all cases was 1.58: 1. The main clinical symptoms of pulmonary sequestration were cough, sputum, fever, hemoptysis and chest pain, but 13.36% patients were asymptomatic. Chest CT scan showed pulmonary massive lesions (49.00%), pulmonary cystic lesions (28.57%), pulmonary cystic-solid lesions ( 11.57% ), and flaky shadows (7.96%). Pulmonary sequestration mainly located in the lower lobe; 66. 43% located in the left posterior basal segments, and 20. 16% located in the right posterior basal segments. Pulmonary sequestrations were divided into three types, intralobar sequestration (83. 84% ), extralobar sequestration ( 16.03% ), and mixed sequestration (0.13% ). The arterial supply was mainly from branches of thoracic aorta (76. 55% ) and abdominal aorta (18.47%). The clinical manifestations of pulmonary sequestration were various, so the preoperative misdiagnosis rate was as high as (59 ± 20) %. We should take full advantage of clinical symptoms, imaging findings and location characteristics to improve the preoperative diagnosis rate.

ObjectiveTo observe the effect of electroacupuncture at Neiguan (PC6) and Shenmen (HT7) on heart rate variability (HRV) in patients with post-cerebral-infarction sequelae.MethodEighty patients were randomized into two groups, 40 cases in each group. The control group was intervened by anti-platelet aggregation and other ordinary symptomatic treatment based on Western medicine, while the treatment group was by electroacupuncture at Neiguan and Shenmen in addition to the treatments given to the control group.ResultThere were no significant differences in comparing the HRV indexes between the two groups before intervention (P>0.05); while the HRV indexes in the treatment group were superior to that in the control group after intervention (P<0.05). HRV indexes were improved after intervention in the treatment group (P<0.05); of the indexes, only SDNN was improved after intervention in the control group (P<0.05), and the rest indexes were insignificantly changed (P>0.05).Conclusion Electroacupuncture at Neiguan and Shenmen can significantly reduce HRV in patients with post-cerebral infarction sequelae.

BACKGROUND:Nano-hydroxyapatite/polyamide 66 is a new nanobionic composite material and has good biocompatibility and bone conduction, but after implantation, whether the composite material can bind to vertebral bone interface and whether it is safe in clinical use stil need further studies. OBJECTIVE: To observe the ability of nano-hydroxyapatite/polyamide composite binding to the interface of artificial humeral head. METHODS: The rabbits were randomly divided into two groups: composite group was implanted with nano-hydroxyapatite/polyamide composites; control group implanted with autologous bone. After the replacement, rabbit bone marrow mesenchymal stem cels were subjected to primary culture, and then the cels were co-cultured with the composite material. RESULTS AND CONCLUSION:At 24 hours after culture, bone marrow mesenchymal stem cels grew wel on the composite materials. The cel adhesion rate was significantly higher in the composite group than the control group at 1 and 4 hours after culture (P < 0.05). After co-culture 4.5, 5.5, 6.5 hours, the absorbance value of cels in the composite group was higher than that in the control group (P < 0.05). At 24 weeks after replacement, changing ranges in the proportions of bone tissue and fibrous layers on the implant surface as wel as coverage rate in the composite group were the highest (P < 0.05). These findings indicate that the nano-hydroxyapatite/ polyamide composite implant has a certain binding capacity, which can make a good interface osseointegration.