In order to have a better understanding of the relation between vertical dimension and occlusal force,a meter was made by means of straingauge.Five Japanese men were investi- gated for occlusal force at different vertical dimensions.The measurements showed that the maximal occlusal force of the posterior teeth occured at 8 to 15mm or the vertical dimension, the maximal occlusal forec of the anterior teeth occured at 13 to 18mm.This indicated that the occlusal force was closely related to the state of jaw closing muscle.

OBJECTIVE:To provide suggestions for the setting-up of the current pharmacovigilance(PV)system.METHODS:The characteristics of the setup of the PV system in both US and France were analyzed and the problems encountered in current monitoring system of adverse drug effects were pointed out.RESULTS & CONCLUSION:Both American and French PV systems have their own advantages and we should learn from it and draw useful experiences from them.In constructing PV system,China should make improvement in organization,communication,financial resource and information technology etc.

Animals ; Blood Glucose ; Cucurbita ; chemistry ; Diabetes Mellitus, Experimental ; drug therapy ; Hypoglycemic Agents ; pharmacology ; Lipids ; blood ; Oxidative Stress ; Polysaccharides ; pharmacology ; Rats

Objective To evaluation the Diagnosis value of single and consociation to drawing materials methods with bronchofibroscopy in pulmonary carcinoma.Methods 481 diagnosed patients with pulmonary carcinoma by bronchofibroscopy during July 2000 to July 2006 were analyzed.Four different drawing materials method including clamping,brushing,needling and rinse checking were used to diagnose.The positive rates of these four methods were compared with single and consociation to drawing materials methods.Results The positive rate of clamping,brushing,needling and rinse checking were 83.9%,70%,59.1%and 35.9%respectively,and the total positive rate was 90.2%after being united.Conclusions Bronchofibroscopy is one of the most important methods in diagnosing pulmonary carcinoma. Using multiple drawing materials methods in bronchofibroscopy can improve the accuracy rate of diagnosis of lung cancer significantly.

Objective To study the chemical constituents in the roots of Flemingia macrophylla Methods To separate and purify compounds by column chromatography and TLC, and to determine their chemical structures by their physical characters and spectral data. Results Eleven compounds were purified from the extraction in the roots of F. macrophylla, among them four are isoflavones, three are flavanones, and one is flavanol. They are genistein (Ⅰ), orobol (Ⅱ), 5, 7, 4′-trihydroxyisoflavone-7-O-?-D-glucopyranoside (Ⅲ), 5, 7, 4′-trihydroxy-8, 3′-diprenylflavanone (Ⅳ), 5, 7, 4′-trihydroxy-6-prenylisoflavone (Ⅴ), flemichin D (Ⅵ), lespedezaflavanone A(Ⅶ), ouratea-catechin (Ⅷ), 3, 4, 5-trimethoxybenzene-O-?-D-glucopyranoside (Ⅸ), stigmasterol-3-O-?-D-glucopyranoside (Ⅹ), and stigmasterol (Ⅺ). Conclusion Compounds Ⅲ—Ⅴ, and Ⅶ—Ⅺ are found from this plant for the first time. All the compounds are found from the roots of this plant for the first time. The active components, genistein and its isoflavone analogs, are main constituents in the roots of F. macrophylla

The concrete methods and experiences for foreign students in case study in the past decades were introduced in this article. We emphasized on teaching students in accordance with their aptitude and step by step, explaining the profound things in a simple way and giving attention to different students' capabilities during teaching. In the practice, we surely felt that case study will bring more advantage than traditional teaching methods, motivate students and improve the capabilities to understand the course content.

BACKGROUND: Vitapex is an injectable root canal filling material. It possesses effects of antibiosis, analgesia, as well as promotes formation of alveolar bone, dentin and cementum, which had been widely used in apexification. However, it also has weakness of long induction time and need reduplicated subsequent visit.OBJECTIVE: To explore the therapeutic effect of mineral trioxide aggregate (MTA) and Vitapex paste on apexification.DESIGN, TIME AND SETTING: The contrast observation experiment was performed at the Department of Stomatology,Shenyang Children's Hospital from February 2006 to November 2008.PARTICIPANTS: A total of 42 patients with 49 teeth were included in this study, including 28 anterior maxilla and 21 premolars.The X-ray film showed that the root tip of teeth was immature.METHODS: The teeth were randomly divided into the experimental group (n=25) and control group (n=24), which was apexificated by MTA and Vitapex paste, respectively.MAIN OUTCOME MEASURES: The effective rate of two groups was compared at months 3, 6 and 12 after operation.RESULTS: All teeth were included in the final analysis. The effective rate of experimental group was greater than the control group at 3 months after operation, and the difference had significant (P < 0.05), while, the effective rate was similar in two groups at 6 and 12 months after operation (P > 0.05).CONCLUSION: Both MTA and Vitapex paste are ideal filling materials in apexfication. Nevertheless, MTA may be a substitute in apexfication for its short therapy duration and precisely therapeutic effect.

MicroRNAs (miRNAs or miRs) are a class of small non-protein-coding RNAs, approximately 18 to 25 nt long. MicroRNAs can act as endogenous RNA interference. MicroRNAs can posttranscriptionally regulate the expression of hundreds of their target genes, controlling a wide range of biological functions such as cellular proliferation, differentiation, and apoptosis. MicroRNAs can posttranscdptionally regulate the expression of genes by hybridizing to complementary sequences in 3' UTR (3' untranslated region) of target messenger RNA (mRNA), repressing the translation of mRNA or increasing the instability of mRNA. A number of miRNAs are mapped to cancer-associated fragile regions (FRAs) as well as in minimal regions of loss of heterozygosity, minimal regions of amplification, or common breakpoint regions in the genome, suggesting that miRNAs might be involved in tumorigenesis. Many miRNAs are up or down-regulated in cancers as potential oncogene or tumor suppressors. It has been considered that the mutation of a series of oncogene or anti-oncogene gradually causes tumorigenesis. The conventional points of view were changed with the finding of non-protein-coding RNAs. MiRNA as members of non-protein-coding RNAs may play an important role in regulating tumor formation. Recent studies have in-vestigated the relationship of miRNAs with neoplasia, development, treatment and prognosis. Lung cancer is the leading cause of cancer-related deaths all over the world. Its etiology is primarily genetic and epigenetic damage caused by tobacco smoke. Systematic analysis of RNA and protein expression levels of thousands of genes has also contributed to defining the molecular net work of lung carcinogenesis. MiRNAs are closely related to lung cancer and play an important part in the diagnosis, therapy, surveillance and prognosis of lung cancer. We reviewed some miRNAs closely associated with lung cancer such as miRNA-126, miRNA-221, miRNA-222, has-mir-221, a polycistronic microRNA cluster miR-17-92, miRNA-128b, has-mir-137, has-mir-182, has-mir-372 and miRNA let-7. We summarized the roles of miRNAs in the genetic susceptibility, invasion or metastasis, diagnosis, therapy and prognosis of lung cancer.

Objective　To study the effects of deliberated hypotension combined with acute simple hemodilution on blood loss,postoperative hemoglubin of the patients undergoing spinal side(back) protrude correction(SSP).Methods　Twenty four ASA grade Ⅰ to Ⅱ patients undergoing elective SSP were randomly divided into two groups:control group(n＝12) and hypotensive group(n＝12).The all patients received with general anesthesia.In the hypotensive group:acute simple hemodilution was accomplished with infusion of lactated Ringer's solution and Gelofusine of as three times as blood loss.Deliberated hypotensin was induced and maintained with 0.01% sodium nitroprusside 2～6μg/kg/min iv.Intraoperative blood loss,blood transfused volume during operation and postoperative hemoglobin were recorded and compared between both groups.Results　 Blood loss was about 51% lower in the deliberated hypotensive group than that in the control group at the end operation.The average volume of transfused blood during operation was(1200±140)ml in control group,blood transfusion was(400±128)ml in the hypotensive groups.Conclusion Deliberated hypotension combined with acute simple hemodilution can significantly decrease the intraoperative blood loss and the SSP operation can be better tolerated for the indicated patients.

Objective To analyze the factors affecting on early efficacy of intravenous thrombolysis with atleplase.Methods The clinical data of 100 acute cerebral infarction patients treated by intravenous thrombolysis with atleplase were retrospectively analyzed.The patients were divided into early effective group and ineffective group,whieh assessed by National Institute of Health Stroke Scale (NIHSS) with criteria of whether there were ＞ 3 or not at 24 hours after therapy.Univariate analysis and multivariate logistic regression analysis were used to determine the differences of clinical data between the two groups.Results Univariate analysis revealed that the early improvement was significantly associated with favorable outcome at 3 month (P =0.000).Multivariate logistic analysis revealed that the systolic pressure at baseline was moderately positively associated with early improvement (OR 1.031,95％ CI 1.008-1.056,P =0.009).Conclusion Moderately lower baseline systolic pressure is associated with early improvement after thrombolytic therapy which is associated with favorable outcome at 3 month.