BACKGROUND:The hedgehog pathway has paid an important role in the progress of chondrogenesis from bone marrow mesenchymal stem cells. However, the definite signal transduction pathway and cross-talking relationship with other common signal pathways are stil poorly understood and the researches related to this field is to continue as a hotspot in the future study. OBJECTIVE:To investigate the research progress of hedgehog signal pathway on the regulation of the chondrogenesis from bone marrow mesenchymal stem cells and the relationship between hedgehog and other signal pathways in the process. METHODS:A computer-based online search in CNKI, PubMed and Google Scholar databases was performed using key words of“Hedgehog, IHH, SHH, bone marrow mesenchymal stem cells, cartilage, chondrogenesis”in English and Chinese, respectively. Literatures related to the process of chondrogenesis from bone marrow mesenchymal stem cells were included and 36 articles were extensively summarized for review. RESULTS AND CONCLUSION:Bone marrow mesenchymal stem cells are currently accepted optimal cellseeds for the cartilage tissue engineering, and hedgehog is a critical signal molecule in the development of skeletal system. The IHH and SHH in hedgehog signal closely participate in control ing the processes of bone marrow mesenchymal stem cellproliferation and chondrogenesis, chondrocyte phenotype maintenance and cooperation with other common single pathways. However, the specific signal transduction mechanism and cross-talking contact with other signal pathways stil need to be further studied, and it stands for the future research directions.

Hearing Loss ; epidemiology ; Humans

Objective: To study the chemical constituents of Limonium sinense. Methods: Eleven compounds were isolated by extraction, preparation-TLC, repeat-silicagel column, Sephadex-LH20, and opened-ODS column chromatography, and identified on the basis of physicochemical constant and spectra analysis. Results: Eleven compounds were isolated and their structures were identified as isorhamnetin (1), mannitol (2), β-sitosterol (3), oleanolic acid (4), quercetin (5), quercetin-3-O-β-D-glucoside (6), ethylgallate (7), kaempferol (8), kaempferol-3-O-α-L-rhamnopyranoside (9), (+)-catechin (10), and isorhamnetin-3-rutinoside (11). Conclusion: Compounds 4, 6, 7,10, and 11 are obtained from L. sinense for the first time.

OBJECTIVE: To discuss the relation between degree of body impairment and that of thoracolumbar spinal injuries resulting from road traffic accidents, and sum up the experiences in body impairment assessment and its regularity. METHODS: For comprehensive body impairment assessment, 477 cases of thoracolumbar spinal injuries in road accidents have been sorted out, reassessed and rediagnosed. In addition, analyses have been undertaken about their treatment, the assessment of the degree of their thoracolumbar dysfunction,nerve dysfunction and the relations between injuries and sequelaes. RESULTS: The analyses show that the degree of thoracolumbar dysfunction and that of the post-injury nerve dysfunction don't necessarily depend on the quantity and degree of spinal injuries. However, the position suffering from the thoracolumbar spinal injuries has an immense impact on the thoracolumbar dysfunction, and the nerve impairment result mainly from the T1-1L spinal injuries. The research also shows that there has been a high misdiagnosis rate in hospital about the spinal injuries. CONCLUSION In body impairment assessment, the cause and effect relations between the injury and degree of injury extent should be analyzed, the injury extent should be employed as principal evidence, and the degree of spinal dysfunction should be taken into greater consideration.
Accidents, Traffic ; Adolescent ; Adult ; Age Distribution ; Aged ; Aged, 80 and over ; Disability Evaluation ; Female ; Humans ; Injury Severity Score ; Lumbar Vertebrae/physiology* ; Male ; Middle Aged ; Nervous System/physiopathology* ; Retrospective Studies ; Spinal Injuries/physiopathology* ; Thoracic Vertebrae/physiology* ; Young Adult

Objective To compare the clinical efficacies regarding femoral artery or radial artery approaches on coronary artery interventional therapies.Methods 360 patients were randomly divided into intervention group via femoral artery (TFI) or transradial coronary intervention (TRI) group.Postoperative observation on the two said groups of patients with vascular lesion characteristics,feasibility factors ( success rate of interventional therapy puncture,time of operation and hospitalization)and complications,were made.Results There were no significant differences between the two groups on the characteristics of vascular lesion (P＞0.05).Success rates of the two groups were 97.78％ and 96.67％ respectively.The differences on success rate,time of operation were not statistically significant (P＞0.05) while the average time of puncture,the mean duration of hospitalization and the rates of complications were significantly different ( P＜ 0.05 ).Conclusion The two methods under comparison had similar success rate and feasibility.However,the complications related to radial artery interventional therapy were much less than the femoral artery interventional therapy.As having better safety,radial artery interventional therapv seemed to have applicable value on clinical oractice.

OBJECTIVETo explore the risk factors of road traffic injury (RTI), and to provide evidence for stretagy development on the prevention and control of RTI.

METHODSCase-crossover study was used. 402 drivers were face to face interviewed by specially designed questionnaire including the items as drinking alcohol before driving, onset anger scale (OAS), anxiety/irritation, Stanford sleepiness scale (SSS), vehicle breakdown, carelessness, violating the rules on right of way and traffic signs when driving. Tables related to case-control study on 1:1 matching was used for single factor analysis, and conditional logistic regression was used for multifactor analysis.

RESULTSThe risk factors that were associated with RTI including high OAS (OAS = 5-7, OR = 114.88, 95% CI:4.29-3074.86), violating the rules on right of way (OR = 46.96, 95% CI:12.74-173.11), violating traffic signs when driving(OR = 24.57, 95% CI: 8.69-69.45), carelessness (OR = 14. 54,95% CI: 6.85-30.86), unsafe distance between vehicles( OR = 14.30,95% CI: 3.68-55.60), wrong judgement (OR = 14.67,95% CI:4.88-44.10), vehicle breakdown (OR = 8.57, 95% CI: 1.38- 53.27) and improper measure ( OR = 8.46, 95% CI: 2.46-29.14) etc.

CONCLUSIONImproper driving behaviors, abnormal psychological status and driving skills of drivers were related to RTI, suggesting that it was necessary to carry out continous traffic security education to the drivers.

Accidents, Traffic ; statistics & numerical data ; Adult ; Cross-Over Studies ; Demography ; Female ; Humans ; Logistic Models ; Male ; Multivariate Analysis ; Risk Factors ; Surveys and Questionnaires ; Wounds and Injuries ; epidemiology ; etiology ; prevention & control

Objective To evaluate the clinical efficacy and safety of tirofiban in the treatment of patients who received percutaneous coronary intervention( PCI).Methods Eighty-seven patients with acute coro-nary syndrome treated with PCI were recruited from Feb 2011 to Sep 2013 prospectively.They were randomly divided into treatment group ( n=41 ) and control group ( n=46 ).Based on the regular anticoagulant therapy , patients in the treatment group were given tirofiban 10 mg· kg-1 immediately at the early time of pre -PCI, followed by 0.15μg· kg -1 · min -1 intravenous infusion until 36 hours after PCI.Patients in the control group were only given the regular anticoagulant therapy at the early time of pre-PCI.And the major adverse cardiovascular events (MACE), myocardial enzymes and complication of the two groups were observed in the two groups.Results The rate of MACE (9.8%, 4/41) in treatment group were much lower than that in the control group (26.1%, 12/46) ( P<0.05 ).The myocardial enzyme indicators of 24 hours after PCI was lower than that in the control group;but there was no difference in bleeding complications between the two groups ( P>0.05 ) . Conclusion MACE can be significantly decreased in patients who were treated with PCI by using tirofiban in the emergency department and tiro-fiban does not increase the risks to develop bleeding complications.

OBJECTIVE: To analyze epidemiological characteristics of road traffic accidents that resulted in injuries in Chengdu area, to find out the cause and to provide scientific a base for accident prevention. METHODS: Appraisal data of the injured in road traffic accident from January 2003 to October 2006 were re-examined. Detailed statistics were made which include gender, age, transportation mode, person types, the accident date and day, and location. RESULTS: Six thousand three hundred and sixty four cases involving road traffic accident were analyzed. Among the injured, male to female ratio was 1.84:1, and the age group of 18-50 were the largest proportion (66.34%). Bicyclists, motorcyclists and pedestrians made up 80.90% of the injured persons. Different age groups, different genders and those who were injured in different regions varied greatly in terms of transport modes they employed. In terms of injured parts, lower limb injury took up the highest proportion (39.49%), with cranium & cerebrum ranking second (22.77%). CONCLUSION Different approaches and measures shall be taken in regard to different age groups, different regions, different times and different transport modes, and corresponding policies shall be adopted.
Accidents, Traffic/statistics & numerical data* ; Adolescent ; Adult ; Age Distribution ; Aged ; Aged, 80 and over ; Child ; Child, Preschool ; China/epidemiology* ; Female ; Humans ; Infant ; Lower Extremity/injuries* ; Male ; Middle Aged ; Motor Vehicles/statistics & numerical data* ; Multiple Trauma/epidemiology* ; Retrospective Studies ; Sex Distribution ; Time Factors ; Wounds and Injuries/epidemiology* ; Young Adult

OBJECTIVE: To study the types, characteristics and common complications as well as disability assessment for the children with craniocerebral injury in the road traffic accidents. METHODS: Data from 204 cases of children with cranio-injury in road traffic accidents were collected and were statistically analyzed according to the location injured, complication, the type of complication and the severity of disability. RESULTS: There were 64 cases of simple diffuse primary craniocerebral injury, 80 cases of simple local primary cranio-injury, 24 cases of diffuse secondary craniocerebral injury and 36 cases of local secondary cranio-injury. The main complications included traumatic epilepsy (14, 6.9%), traumatic cerebral infarction (9, 4.4%), traumatic hydrocephalus (7, 3.4%) and traumatic mental disorder (5, 2.5%). CONCLUSION Among the children with cranio-injury due to road traffic accidents, simple primary cranio-injury was the most common result, whereas the traumatic epilepsy and traumatic cerebral infarction were the major types of complications. The assessment criteria for body impairment of the children with craniocerebral injury in the road traffic accidents should be broadened accordingly, with addition of certain specific items for children.
Accidents, Traffic/statistics & numerical data* ; Adolescent ; Cerebral Infarction/etiology* ; Child ; Child, Preschool ; Craniocerebral Trauma/pathology* ; Disability Evaluation ; Epilepsy, Post-Traumatic/etiology* ; Female ; Forensic Pathology ; Humans ; Hydrocephalus/etiology* ; Male ; Retrospective Studies

OBJECTIVETo investigate the prevalence of hearing impairment and ear diseases in old people and provide scientific data for drawing up the prevention and treatment strategies.

METHODSUsing the probability proportion to size (PPS) method, 1261 people over 60 years were investigated in 40 clusters in Jiangsu Province with the WHO protocol.

RESULTSThe prevalence of hearing impairment was 58.1% (the standardized rate: 59.5% in the whole country, 60.9% in Jiangsu province). Degrees of hearing impairment were mild (33.1%), moderate (17.8%), severe (5.9%) and profound (1.3%). The prevalence of hearing disability was 25.0% (the standardized rate: 26.6% in the whole country, 28.1% in Jiangsu province). There were significant difference of the prevalence between male and female, as well as urban and rural, and different ages. The prevalence of the ear diseases was auricle malformation (0.2%), wax (1.7%), otitis externa (0.1%), fungi (0.5%), serous otitis media (1.2%), chronic suppurative otitis media (1.6%), dry perforation of tympanic membrance (2.3%). The causes of hearing impairment were ear diseases (2.9%), non-infectious condition (92.6%), genetic condition (0.3%) and undetermined causes (4.2%). Of which, 31.1% of persons needed hearing aids while 2.3% of persons needed medicine treatment, but 0.9% of persons needed non-urgent surgery and 1.0% of persons needed other treatment.

CONCLUSIONSThe prevalence of hearing impairment and disability in the old rised obviously than the last investigation in 1987. It was a heavy burden for social development in China. The government and the whole society should take more concern about the problem. The scientific strategies of prevention and treatment were urgently needed and implemented.

Aged ; Aged, 80 and over ; Audiometry, Pure-Tone ; China ; epidemiology ; Ear Diseases ; epidemiology ; Female ; Hearing Loss ; epidemiology ; Humans ; Male ; Middle Aged ; Prevalence