Adult ; Aged ; Cerebral Infarction ; etiology ; China ; epidemiology ; Coronary Disease ; diagnosis ; etiology ; Diagnosis, Differential ; Female ; Humans ; Hypertension ; complications ; diagnosis ; epidemiology ; Logistic Models ; Male ; Medicine, Chinese Traditional ; Middle Aged ; Risk Factors ; Yin Deficiency ; diagnosis

Objective To study correlation between MRI signal intensity of the lumbar intervertebral disc and collagen content in the nucleus pulposus.Methods Thirty-one cases with lumbar intervertebral disc herniation(male 21,female 10)received percutaneous lumbar disketetomy.Thirty-one specimens of nucleous pulposus were obtained from percutaneous lumbar disketctomy procedure and collagen content in them was measured with reformed hydroxyproline measurement method.The signal intensity(SI) of lumbar intervertebral disc and cerebrospinal fluid was measured in T_2 WI sagittal image and then ratio of disc SI to cerebrospinal fluid SI was calculated.The Pearson analysis was used to analyze the correlation between the collagen content and SI ratio and disc SI on T_2 WI.Results Collagen content and SI ratio were (231.0?63.5)mg/g and 0.19?0.07,respectively.There was negative correlation between them (r=-0.61,P

OBJECTIVETo study the chemical constituents from Centella asiatica.

METHODChemical constituents were isolated by repeated column chromatography (Toyopearl HW-40C and HPLC) and their structures were elucidated on the basis of spectroscopic method.

RESULTFive compounds were identified as: docosyl ferulates (1), bayogenin (2), 3beta-6beta-23-trihydroxyolean-12-en-28-oic acid (3), 3beta-6beta-23-trihydroxyurs-12-en-28-oic acid (4), D-gulonic acid (5).

CONCLUSIONAll of the Compounds were isolated for the first time from C. asiatica.

Centella ; chemistry ; Chromatography, High Pressure Liquid ; methods ; Coumaric Acids ; chemistry ; isolation & purification ; Molecular Structure ; Plants, Medicinal ; chemistry ; Triterpenes ; chemistry ; isolation & purification

AIMTo elevate the encapsulation efficiency, decrease the burst release and improve the release of protein entrapped in poly (lactic-co-glycolic acid) (PLGA) microspheres. The bovine serum albumin (BSA) composite microspheres of alginate-chitosan-PLGA were prepared and the release characteristics of BSA from this composite microspheres were studied.

METHODSThe much smaller calcium alginate microcapsules were first prepared by a modified emulsification method in an isopropyl alcohol-washed way and coated with chitosan, then the alginate-chitosan microcapsules were further entrapped in PLGA to form the composite microspheres. The protein concentration was determined using a BCA protein assay kit. The release profiles were changed with various formulation factors.

RESULTSThe average diameter of the composite microcapsules was about 30 microm. Comparing with 60% to 70% of the conventional PLGA microspheres, the average encapsulation efficiency was more than 80%, and the burst releases in phosphate buffer solution of the composite microspheres decreased from 40% and 50% to 25% and further to 5% in saline solution.

CONCLUSIONThe novel composite microspheres were prepared, the drug encapsulation efficiency increased and the burst release decreased. The desired release profiles could be obtained by regulating the ratios of PLG and PLA in the composite microspheres.

Alginates ; chemistry ; Chitosan ; chemistry ; Drug Delivery Systems ; methods ; Lactic Acid ; chemistry ; Microspheres ; Particle Size ; Polyglycolic Acid ; chemistry ; Polymers ; chemistry ; Serum Albumin, Bovine ; chemistry

As the main part of the teaching activities,students play an important role in the teaching reform.The students were trained through 3 pathways,“Extending teaching activities from the classroom to the outside”,“Development from basic to clinical knoledge” and “Culturing students' innovative consciousness”,so as to allow them to give full play in teaching reform,to enhance their ability of practice and learning by themselves,to culture their innovative consciousness and to develop students' leading functions in the anatomy teaching reform.

OBJECTIVETo examine the effect of ONO-AE3-208, an EP4 antagonist, on the formation of bone metastasis from prostate cancer in mice.

METHODSThirty-four 6-week old nude mice were divided into an experimental and a control group of equal number to be treated by intraperitoneal injection of ONO-AE3-208 and double distilled water, respectively. Then PC3/LUC cells were constructed by stably transfecting luciferin to prostate cancer PC3 cells and inoculated into the left ventricle of the mice to establish an animal model of systemic bone metastasis. The time of metastasis formation, photon tumor burdens, and changes of the survival curves after modeling were compared between the two groups of mice.

RESULTSAt 30 days after modeling, bioluminescence imaging analysis showed that the photon tumor burdens were significantly increased in a time-dependent manner in the control group in comparison with those in the experimental group (P < 0.01). The rate of metastasis formation was significantly higher in the former than in the latter (93.3% vs 33.3%, P < 0.001). The median time of metastasis formation was 29 d (95% CI 26.547 - 35.262) in the experimental animals as compared with 21 d (95% CI 17.213 -24.787) in the controls (P < 0.001).

CONCLUSIONEP4 antagonist ONO-AE3-208 can inhibit the formation of bone metastasis from prostate cancer in mice.

Animals ; Bone Neoplasms ; prevention & control ; secondary ; Cell Line, Tumor ; Disease Models, Animal ; Humans ; Male ; Mice ; Mice, Nude ; Naphthalenes ; pharmacology ; Neoplasms, Experimental ; prevention & control ; Phenylbutyrates ; pharmacology ; Prostatic Neoplasms ; pathology

Adolescent ; Adult ; External Fixators ; Female ; Forearm Injuries ; therapy ; Fractures, Bone ; surgery ; Humans ; Male ; Manipulation, Orthopedic ; Middle Aged

Objective To study the stability of micro-implant orthodontic anchorage(MA)with different pitch in the case of immediate loading.Method Employing 3D finite element analysis method,the stress and dis-placement distribution on the bone interface of MIA with different pitch(0.3 mm、0.5 mm、0.7 mm and 1.0 mm,respectively),which was 1.47 N loaded vertically in the major axis direction,were analyzed.Result The pitch affected the stress distribution significantly,because the maximum stress increased with the pitch decreasing and the impact of pitch on stress distribution on neck and central locations of MIA were different;to decrease the pitch could reduce the max displacement of the jaw,but the impact of pitch on displacement distribution of MIA was not significant.Condusions In the case of immediate loading.MIA with pitch 0.5 mm-0.7 mm is suggested to be selected as orthodontic anchorage in the clinic.

Objective To study the stability of micro-implant orthodontic anchorage(MA)with different pitch in the case of immediate loading.Method Employing 3D finite element analysis method,the stress and dis-placement distribution on the bone interface of MIA with different pitch(0.3 mm、0.5 mm、0.7 mm and 1.0 mm,respectively),which was 1.47 N loaded vertically in the major axis direction,were analyzed.Result The pitch affected the stress distribution significantly,because the maximum stress increased with the pitch decreasing and the impact of pitch on stress distribution on neck and central locations of MIA were different;to decrease the pitch could reduce the max displacement of the jaw,but the impact of pitch on displacement distribution of MIA was not significant.Condusions In the case of immediate loading.MIA with pitch 0.5 mm-0.7 mm is suggested to be selected as orthodontic anchorage in the clinic.

Objective To investigate the current status of occupational hazards and prevention and control of occupational ， - Methods ， diseases in micro small and medium sized manufacturing enterprises in Jiangxi Province. A total of 1 034 micro - small and medium sized manufacturing enterprises in Jiangxi Province were selected as the research subjects using a stratified cluster sampling method. The exposure of occupational hazards and the implementation of occupational hazards prevention and Results ， control measures were investigated. Among the 1 034 enterprises the small and micro enterprises accounted for ， 91.5%. The enterprises with serious occupational hazards were mainly concentrated in metallurgy building materials industry ， and machinery equipment and electrical appliance manufacturing industry. The exposure rate of occupational hazard factors in ， ， （ vs the categories of occupational hazard factors from high to low was physical factors dust and chemical factors 78.9% 52.8% vs ，P ） （ ）， ， 25.0% <0.01 . The exposure rate from high to low was metallurgy and building materials industry 60.8% machinery （ ）， ， equipment and electrical equipment manufacturing industry 42.9% light industry textile and tobacco processing industry （ ）， ， （ ）（P ） 32.0% chemical petrochemical and pharmaceutical industry 21.0% <0.01 . Noise exposure accounted for 98.3% in the workers exposed to physical factors. The implementation rate of prevention and control measures for occupational hazards ， in enterprises from high to low was the staffing of occupational health management personnel the establishment of ， ， occupational health management institutions the establishment of occupational health management systems the detection ， ， of occupational hazards the evaluation of the control effect of occupational hazards of construction projects and the - （ vs vs vs vs vs ，P ） pre evaluation of occupational hazards of construction projects 32.5% 25.7% 23.7% 16.2% 6.9% 4.2% <0.01 . Conclusion The focus of prevention and control of occupational hazards in manufacturing industry in Jiangxi Province is noise ， - and dust in small and micro metallurgy and building materials industry. Most of the micro small and medium sized manufacturing enterprises have not carried out the detection of occupational hazards and evaluation of occupational hazards in accordance with the law. The situation of occupational disease prevention and control is still challenging.