Objective:To investigate the current status of periodontal diseases in the population at the age of 12,35~44 and 65~74 years in Chongqing,to provide information for the establishment of oral health care policies in Chongqing. Methods:A stratified equal-sized randomly sampling design was applied to obtain 751 objects aged at 12 years old,723 objects aged at 35~44 years old and 722 objects aged at 65~74 years old of three cities and three rural areas in Chongqing. The status of gingival bleeding,dental calculus,periodontal pocket and loss of attachment were assessed according to "The Guidline for the Third National Oral Health Survey" by using a CPI prode.The detection rates were calculated and were compared in aspect of area and gender. Results:In the group aged 12,the detection rates of gingival bleeding and dental calculus were 79.49% and 86.68% respectively and the detection rates of dental calculus in rural areas were higher than that of urban residents(P

Objective:To explore the significance of ethical issues in emergency medicine.Method:Literature review combined with specific features of emergency department in author's hospital is employed to explore the ethical issues in current emergency medicine,and the necessity to emphasize ethical issues.Related countermeasures are also come up with according to a small sample investigation among emergency residents in author's hospital.Result:Due to the unique characteristics of emergency medicine,there are specific ethical issues arising in emergency department.Conclusion:Enough emphasis should be attached to the reasons for ethical issues in emergency medicine.Relevant regulations and patients triage should be improved in emergency medical treatment.It is also called for to value patients' legal rights,strengthen physician-patient communication,and protect patients' life safety after emergency treatment.Meanwhile,it is also significant to relieve emergency doctors' stress at work,and strengthen sustainable on-job training and team-work of emergency doctors.

Chronic constipation (CC) is one of the most common digestive diseases with high prevalence and long course.CC patients often suffer from sleep disorders and psychological problems such as anxiety and depression.Somatic and mental symptoms may affect with each other, so a vicious circle will develop to impair patients′ quality of life (QOL) and increase their economic burden.The article reviews the impact of chronic constipation on QOL and economic burden of patients, indicating that clinician should pay sufficient attentions on chronic constipation.

OBJECTIVE:To study the pharmacokinetics of aclacinomycin A polylactide lyophilized nanopartical (ACM-A-PLA-NP) in plasma of rabbit.METHODS:HPLC was selected to determine the concentration of aclacinomycin A in plasma after a single dose of ACM-A-PLA-NP and lyophilized ACM-A.RESULTS:The pharmacokinetic parameters of these two dosage forms were obtained by 3p87.CONCLUSION:The lyophilized ACM-A-PLA-NP has a more sustained release character comparing with the lyophilized ACM-A.

AIM: To establish the co-culture mode of tissue-engineered tracheal seeding cells, and compare with the routine culture, so as to provide the fundament of tissue-engineered trachea construction by cell compound materials. METHODS: The experiment was completed at the laboratory, Department of Respiratory Diseases, Tangdu Hospital, the Fourth Military Medical University of Chinese PLA from May 2006 to May 2007.①Three healthy New Zealand male rabbits, weighed (250.00?0.75) g, were used in this study.②Co-culture mode: The tracheal epithelial cells and fibroblasts were isolated and then co-cultured for 7-10 days. The two kinds of cells were distinguished according to their different tolerances to trypsin. Subsequently, A hole received 0.5 g/L trypsinization, cells were suspended in DMEM medium containing 0.05 volume fraction of CO2 and then transplanted into B hole (fibroblasts); again, A hole was added with 2.5 g/L trypsin for digestion, afterwards cells were suspended with K-FSM medium and transplanted into C hole (tracheal epithelial cells). Routine culture: after isolation, tracheal epithelial cells were cultured and fibroblasts were purified, respectively.③The co-cultured cells and the traditionally cultured cells were compared via cell growth curve and cell proliferation detected by 3-(4,5-dimethylthiazo-2-yl)-2,5-diphenyl-tetrazolium bromide (MTT) assay. RESULTS: ①Cell growth: Co-cultured cells grew well, those in A hole increased intercellular apace after trypsinization, while cells in B hole were shaped as fusiform, without the manifestation of typical road stone-like cells, and cells in C hole were apposite, showing lamellar road stone-like morphology.②Cell growth curve: The growth curve of co-cultured cells was identical with that of cells by routine culture method.③Cell proliferation: MTT detection revealed no significant difference in the proliferation of co-cultured cells and cells cultured by traditional method (P

AIM:To establish a simple RP-HPLC method for determining levodopa in Mucuna pruriens var.utilis,and study the levodopa content in different parts of Mucuna pruriens var.utilis and in various growth periods two cultispecies(white flower and purpleflower). METHODS: A RP-HPLC method was used for the determination of levodopa on a Polaris RP-C18(250 mm?4.6 mm,5 ?m) column.The mobile phase was methanol-potassium dihydrogne phosphate(10∶90,pH3.38)for seed,flower,leaf,stem and root,and methanol-potassium dihydrogne phosphate(5∶95,pH3.17)for pod.The detection wavelength was at 280 nm,and flow rate was 1 mL/min. RESULTS: The levodopa content in seed and white-flower cultispecies were higher.In the growth periods,the levodopa content was higher in the sample collected when the pod matured and became dry. CONCLUSION: White-flower cultispecies of M.pruriens var.utilis is the good cultispecies.matured and dry pod is the optimal harvesting time for this herbal medicine.

Solutions of chitosan and carrageenan were co-reacted under various experimental conditions to form water-insoluble precipitates. DR. spectroscopic studies and the counter -ions analyses revealed that the combination of the polyions proceeded through the electrostatic interaction between the - NH+3 of chitosan and the - SO3 of carrageenan, and the mole retios of N/S in the poly-electrolyte complexes (PEC) thus prepared have large scope depending on pH, the degree of deacetyla-tion (DD) of chitosan as well as the mixin ratio of the complexing components. The observation of the PEC by scanning electron microscopy showed that there exist fibrous structures in some PEC depending on such reactive conditions as pH, DD of chitosan related with the charge densities of chitosan chains. The solubility of PEC, which is greatly affected by the DD of chitosans, and the blood compatibility have also been studied.

The strain and transversal area of human anterior cruciate ligament (ACL) were investigated in 30 samples of the knee joint. The length of ACL changes with movement of the knee. The maximum strain and extension are 19.42％ and 4.65mm respectively. The mean transversal area of the ACL is 39.95?10.22mm~2. The resuults of the investigation provide morphological data for reparation and reconstruction of the ACL in clinic.

Objective To optimize the processing parameters for the extraction of chlorogenic acid in Fule Granula by Box-Behnken experimental design.Methods The content of chlorogenic acid in Fule Granula was determination.The separation was performed on a Agilent ZORBAX Eclipse XDB C18 column(4.6 mm ×250 mm, 5 μm), and column temperature 30 ℃.Aetonitrile-0.2% H3PO4 was used as the mobile phase.The detection wavelength was at 327 nm.A three-factor and three-level Box-Behnken experimental design was employed to investigate effects of extraction time, solid-liquid ratio and extraction times on composite score of extracting amount of chlorogenic acid.Results Optimum process conditions were as follows:12 times the amount of water extracted three times, each time 60 min; chlorogenic acid extraction rate of 3.379%.Conclusion This optimized extraction technology has good predictability by Box-Behnken experimental design, and overall desirability, it provides a reference for application of Fule Granula.

Young Cadre talents in the hospital will be the most important influence factor of the future of the development of Medical care .Their training must includes management , medical skill , science study and so on and be different from the other professions .This study selected the Young Cadre talents of a hospital as the object .And we got the basic condition of the personal , training requirement and the development situation of them , then put for-ward some proposals and methods on how to foster and develop them by these methods below : literature research , questionnaire survey , field survey , statistical analysis , case analysis , interviews with 360 degree and so on .