BACKGROUND: There are many methods for studying the somatotype of adults or children. Among them, Heath-Carter somatotype method is a comprehensive evaluation method. Using this method, 10 items of anthropometric indicators are selected and 3 factors which could be gotten to represent relative content of body fat, growth degree of skeletal muscle and relative height and thinness of body (relative line degree), are calculated, respectively.OBJECTIVE: To analyze the rules and characteristics of somatotype development in Dong students from Hunan province, so as to supplement the essential data for physical anthropology.DESIGN, TIME AND SETTING: A cross-sectional investigation was performed at the Department of Biological Engineering, Huaihua College of Hunan Province in May 2006.PARTICIPANTS: A total of 989 Dong students (boys 492, girls 497), aged 7 to 17 years, were selected from the primary schools or middle schools of Tongdao Dong Nationality Autonomous Country in Hunan province and recruited into the present study. All the selected students were verified healthy by physical examinations at school. The subjects were divided into two groups by gender, and each group was divided into 11 subgroups according to the age.METHODS: By Heath-Carter somatotype method, 10 anthropological indexes were measured. Each indicator was measured twice and the average value was selected. The above-mentioned data were input into the computer to form a database. The following indicators were calculated in turn: 3 factors on somatotype, coordinate values of X and Y on somatotype chart, mean of dimensional distances from the average somatotype to all somatotypes in the sample, difference between the two somatotypes in three-dimensional space and frequency distribution of each somatotype.MAIN OUTCOME MEASURES: Height, body mass, upper arm circumference, calf circumference, intracondylar diameters of humerus and femur, skinfold of brachial triceps, subscapular skinfold, skinfold of anterosuperior iliac spine, skinfold of gastrocnemius muscle.RESULTS: All 989 students were included in the final analysis. The dynamic range of the average value of endomorphic factor was 1.2-1.9 and 1.3-4.1, and that of mesomorphic factor was 4.2-5.1 and 1.9-3.0, and that of ectomorphic factor was 2.8-3.7 and 2.6-3.9 for the boys and the girls, respectively. Statistical analysis revealed that there was significant difference in the average value of mesomorphic factor by gender in each age (P＜0.05-0.01). The average endomorphic factor of the girls was obviously higher than that of the boys in each age (P＜0.01) except 7 to 11 years old. The average ectomorphic factor of the girls was higher than that of the boys before 13 years old and it was contrary after 13 years old. There was significant difference of average ectomorphic factor between beys and girls only in 9,11 and 15 to 17 years old (P＜0.05-0.01). The results of t-test showed that there was significant difference for the somatotypes by gender in each age (P＜0.05-0.01). The distribution of girl somatotype demonstrated a dynamic process from 7 to 17 years old, which demonstrated balanced mesomorphy-ectomorphy changed to balanced ecdomorphy, ectomorphy-ectomorphy, balanced endomorphy-ectomorphy and balanced endomorphy in turn. But distribution of boy somatotype was relatively stable, and average somatotype was mesomorphy. Cluster analysis revealed that there was obvious difference of congenital somatotype between Dong students and other 9 populations. During puberty, the somatotype feature of Dong boys was more close to that of Korean boys (SAD=0.37), but which was more far to that of Han boys in the city (SAD=2.15). The somatotype feature of Dong girls was more close to that of Zhuang girls (SAD=0.71), but which was more far to that of Korean girls (SAD=2.35) and Miao girls (SAD=2.10).CONCLUSION: The congenital somatotype of Dong students has its unique characteristics. There is obvious difference in somatotype characteristics between boys and girls.

Objective:To explore effect of early rehabilitation therapy on improving prognosis and quality of life (QOL) in patients with acute myocardial infarction (AMI) .Methods :A total of 120 AMI patients treated in our hospital were selected .According to random number table ,they were randomly and equally divided into routine treatment group (n=60 ,received routine treatment) and rehabilitation group (n=60 ,received routine treatment combined rehabilitation therapy ) .Clinical symptoms ,myocardial enzymes ,cardiac function indexes ,complications , QOL ,length of hospital stay and hospitalization cost were statistically analyzed and compared between two groups . Results :Compared with routine treatment group after treatment ,there were significant reductions in incidence rates of dizziness ,low back pain ,leg weakness ,constipation ,palpitations (P<0.05~ <0.01) ,abdominal distension and complications (36.7% vs .5.0% );significant rise in Barthel index [ (61.9 ± 8.7) scores vs .(86.4 ± 6.9) scores] , significant reductions in length of hospital stay [(13.8 ± 3.2) d vs .(5.9 ± 2.6) d] and hospitalization cost [(13600 ± 1450) RMB vs .(8600 ± 1240) RMB] in rehabilitation group ,P<0.05~ <0.01 .Conclusion:Early rehabilitation therapy can significantly improve prognosis and quality of life ,shorten length of hospital stay , lower hospitalization cost in patients with acute myocardial infarction ,which is worth clinical extending .

Objective To investigate the changes of peripheral blood lymphocyte function in the children patients with acute phase of Henoch-Schonlein purpura(HSP),and to explore its significance in the diagnosis and therapy of HSP.Methods The peripheral blood lymphocytes subsets CD3+,CD4+,CD8+,CD4+/CD8+,CD19+ and NK cells(CD16++ CD56+) were detected in 51 children patients with acute phase of HSP and 40 children undergoing physical examination by flow cytometry(FCM Results Compared with the control group,the counts of peripheral blood CD4+,CD4+/ CD8+and NK cells CD16++ CD56+) in the acute stage of the HSP group were significantly decreased(P<0.01),while the proportions of CD8+ and CD19+cells were significantly increased(P<0.05,P<0.01).Conclusion The immunity dysfunction exists in the children patients with acute phase of HSP.The peripheral blood lymphocyte function detection has an important significance for the early diagnosis and treatment of HSP.

Objective To determine the prevalence of antibodies to cyclic citrullinated peptides (antiCCP) in patients with juvenile-onset systemic lupus erythematosus (JSLE) and its potential clinical significance. Methods Anti-CCP was measured in sera from patients with JSLE (n=47), juvenile idiopathic arthritis (JIA, n=54) and the sera from age-matched healthy children (n=40) using the third generation of anti-CCP ELISA commercial kit. The association of anti-CCP with other laboratory parameters and clinical features, especially arthritic symptoms in JSLE was also analyzed. T-test, Mann-Whitney U test, Chi-square and Fisher's exact test were used for statistical analysis. Results Out of the 47 JSLE patients, 6 (13%) were anti-CCP positive, which was significantly higher than that of the healthy controls( 13% vs 0, P＜0.05 ), but not different from that of the JIA group (26%, P=0.098). RF was more prevalent in JSLE patients with anti-CCP than patients without (83% vs 15%, P＜0.01 ), but there was no difference in other laboratory parameters and the clinical features ineluding the occurrence of arthritis (67% vs 51%, P＞0.05). As one of the initial symptoms, arthritis was observed in 25 of 47 JSLE patients and no one had developed deforming arthropathy.There was no statistical difference in anti-CCP positivity between JSLE patients with and without articular involvement ( 16% vs 9%, P＞0.05 ). Anti-CCP was not detected in any of the 3 patients with JSLE who had experienced joint pain and limited activity during 3 years follow-up. Conclusion Anti-CCP could be detected in patients with JSLE. It is noteworthy when differentiate from juvenile idiopathic arthritis, but the presence of anti-CCP does not relate with the occurrence of arthritis at presentation and persistence of arthritis in JSLE.

Objective To observe the inhibition of piperlongumine in vitro on platelet aggregation and blood coagulation tests for children,to provide the experimental basis for clinical medication.Methods Venous blood samples from 30 children were randomly devided into 5 groups,and was centrifuge to separate platelet-rich plasma (PRP).After storing in 37 ℃ thermostat water bath for 5 minutes,the PRP which have been added DMSO as blank group,and added Aspirin (10 μmol/L)as control group,and added PL (20 μmol/L),PL(100 μmol/L),PL(200 μmol/L) as different concentrations of PL groups respectively,were induced by the addition of adenosine diphosphate (10 μmol/L),collagen(2.5 μg/mL) and the arachidonic acid(500 μg/mL).Then the platelet aggregation rate of the PRP from 5 groups could be measured by turbidimetry.Blood plasma isolated from venous blood was divided into 5 groups.In the PL groups,blood plasma were mixed up with PRP concentrations of which were 5,10,20 μmol/L.In the bland group,blood plasma were mixed up with DMSO (1％).In the control group,blood plasma were mixed up with heparin sodium(35 U/mL).After storing in 37 ℃ thermostat water bath for 5 minutes,fibrinogen(FIB),prothrombin time(PT),thrombin time(TT) and activated partial thromboplastin time of different groups were detected.Results Compared to the control group,the groups which were add PL with different concentrations (20,100,200 μmol/L) showed significant inhibition on platelet aggregation induced by AA and collagen(P<0.05).PL with concentrations of 100 μmol/L and 200 μmol/L showed significant inhibition on platelet aggregation induced by ADP(P<0.05).The PT,APTT,TT of blood plasma from children had been significantly prolonged by the intervention of PL 10 μmol/L and PL 20 μmol/L(P<0.05),however,no significant change of FIB was observed.Conclusion There are inhibitory effects of PL on platelet aggregation of blood plasma from children and anticoagulant activity in this study.

Objective To study the potency of transdifferentiated renal tubular epithelial cells for acquiring the tissue stem cells during renal fibrosis.Methods The in vitro cellular model of renal tubular epithelial cells(NRK-52E)transdifferentiation under the inflammatory environment of the local renin-angiotensin (AngⅡ)system was established.The expression and change situation of the embryonic kidney developmental gene Pax2 and the tissue stem cell surface marker CD133 were observed.Results Local high concentration of AngⅡcould stimulate the NRK-52E cells to express Pax2 and CD133 molecule,its effect demonstrated the dose-and time-dependent relation.Conclusion The inflammatory damage leads to the transdifferentiated renal tubular epithelial cells po-tency to acquire the tissue stem cell.

BACKGROUND:Calcium phosphate bone cement has been applied to clinical surgery because of its good biocompatibility and osteoconduction. However poor mechanical properties and lack of osteoinductivity limit its wide application.
OBJECTIVE:To develop calcium phosphate cement incorporated with N-acetylcysteine (NAC) loaded silk fibroin microspheres (SFM), which is a kind of new injectable bone graft material with slow-release function, and evaluate its physical and chemical properties and cel compatibility.
METHODS: Empty SFMs were prepared with emulsion solvent evaporation to absorb NAC solution of different concentrations by NAC-SFM and the concentration of NAC at the maximum drug loading ratio was determined. Then, NAC-SFM was loaded into calcium phosphate bone cement to test the drug release propertiesin vitro. MC3T3-E1 osteoblasts were cultured on the surface of NAC-SFM calcium phosphate bone cement and cel attachment and growth were observed by scanning electron microscope. Additionaly, MC3T3-E1 cels were cultured with three kinds of bone cement extracts (calcium phosphate cement, SFM-calcium phosphate cement, NAC-SFM-calcium phosphate cement, as wel as cultured in theα-minimum essential medium containing a volume fraction of 10% fetal bovine serum and 1% penicilin-streptomycin double antibody as the control. MTS assay was used to evaluate cel proliferation.
RESULTS AND CONCLUSION:Microspheres in the composite bone cement presented with smooth surface, same size, diffused distribution and no obvious destroy. Thus, the SFM could remain stable in the reaction process of the composite bone cement. The double slow release system which contained silk fibroin microspheres and calcium phosphate bone cement showed a significant decrease in the cumulative release percentage of NAC within the first 24 hours compared with the control group (P < 0.05). In the next 28 days, the release speed of NAC was significantly lower in the NAC-SFM-calcium phosphate cement group than the calcium phosphate cement group (P< 0.05). In addition, different extracts had no significant cytotoxicity to the growth of MC3TC-E1 cels. Thus, the NAC-SFM-calcium phosphate cement has good cytocompatibility, which provide a new insight into the development of bone repair biomaterials.

Objective: In order to observe the clinical therapeutic effect of acupuncture plus ear point-sticking for simple obesity. Methods: Fifty-two cases of the patients with simple obesity were treated by acupuncture and ear point-sticking method for one course. Results:After the treatments, the results showed remarkable effect in 22 cases, effect in 25 cases and failure in 5 cases, and the total effective rate was 90.4%. There was no obvious change in various indexes of the body in the male and female patients before and after the treatment.Conclusion: Acupuncture plus ear point-sticking for simple obesity is stable in the therapeutic effect, simple and safe in application, without side effects, and cheap in cost and needs to be greatly popularized.

Objective To investigate whether single nucleotide polymorphisms(SNPs)in the ABCC4(rs7320375,rs7329490,rs7986087),FCGR2A(rs1801274)and BLK(rs2254546)region could be susceptibility locus for Kawasaki disease(KD)in children from southern China.Methods This study was performed as a case-control study.The samples,92 individuals with KD and 194 healthy controls from southern China,were collected at Guangzhou Women and Childrens′Medical Center from October,2013 to November,2015,and the SNPs were genotyped by using the Sequenom MassArray system.The genotype distribution and allele frequency of the SNPs were analyzed using chi-square test and Fisher′s exact test.Results The genotype distribution of FCGR2A(rs1801274)in patients with KD were as follows: GG 4.3％(4/92),AG 33.7％(31/92),AA 62％(57/92),correspondingly in healthy controls were GG 48.5％(94/194),AG 41.2％(80/194),AA 10.3％(20/194)respectively,and a significant difference was found between KD patients and controls(x2=98.17,P=0.000).A allele frequency of FCGR2A(rs1801274)in KD patients(78.8％,145/184)was higher than that in controls(30.9％,x2=0.120,P=0.000).The genotype distribution of BLK(rs2254546)in patients with KD were as follows: GG 67.4％(62/92),AG 28.3％(26/92),AA 4.3％(4/92),correspondingly in healthy controls were GG 52.1％(101/194),AG 43.8％(85/194),AA 4.1％(8/194)respectively,significant differences were found between KD patients and controls(x2=6.47,P=0.039).G allele frequency of BLK(rs2254546)in KD patients(81.5％,150/184)was higher than that in controls(74.0％,287/388,x2=1.553,P=0.047).Conclusions For the children in southern China,FCGR2A SNPs(rs1801274)may be associated with the susceptibility to KD,and the A allele may increase the risk of KD.BLK SNPs(rs2254546)is also found to be associated with the susceptibility to KD,and the G allele may increase the risk of KD.

BACKGROUND:Calcium phosphate cements (CPCs) possess the bio-degradation and osteoconduction, and its final hydration product, hydroxyapatite, is the main inorganic constituent of bones. However, its poor mechanical property makes it unable to be used for repairing weight-bearing bone defects. OBJECTIVE:To develop a kind of bioactive bone cements with decent biomechanical property and biocompatibility. METHODS:6%silk fibroin aqueous solutions containing different concentrations of N-acetylcysteine (0, 10 and 25 mmol/L) were prepared. Each cement sample was prepared by mixing the curing liquid andα-tricalcium phosphate powder with the ratio of 0.4 mL:1 g;α-tricalcium phosphate powder mixed with ddH2O as control group. The compressive strength, setting time of the cements were measured. The crystal components of the cements were characterized using X-ray diffraction and the microstructure was observed using scanning electron microscope. MC3T3-E1 cel s were seeded onto the material in each group, and cel morphology was observed under scanning electron microscope at 24 hours. MC3T3-E1 cel s were cultured in the extract of each material, cel proliferation was detected at 1, 3, 5 and 7 days, and the lactate dehydrogenase level was detected at 1 and 3 days. RESULTS AND CONCLUSION:X-ray diffraction and scanning electron microscope showed that the final hydration products ofα-tricalcium phosphate in al specimens were hydroxyapatite. When the concentration of N-acetylcysteine was 25 mmol/L, the compressive strength of the material reached (49.39±1.68) MPa, with the initial setting time of (21.77±1.07) minutes and the final setting time of (31.88±1.69) minutes. There was no significant difference in cel morphology among cements. These results suggest that the cement containing N-acetylcysteine exhibites good biocompatibility and high mechanical strength.