Objective To explore the age-and sex-specific body composition of normal children in Beijing area.Metheds The subjects were a total of 587 children of 6-14 years old,who were recruited from Beijing schools.All of them had relative weight within normal range(80%～120%),and no chronic disease.The relative weight was obtained,according to standard weight,using the follo-(wing) formula: relative weight(%)=(body weight/standard weight) ?100.Body compositions were estimated with a bioelectrical impedance analyser,which had been proved to be reliable and valid for determining the percentage of body fat.Results Not only fat free mass(FFM) but also fat mass(FM) increased monotonically with age in both sexes.FFM was higher in boys than that in girls at all ages.FM was significantly higher in girls than that in boys aged 6 to 8 years old;however,there was no significant difference for FM between sexes aged 9-14 years old.Patterns of change in mean ratio of body fat(%BF),with age differed by sex.Percent age of BF was significantly higher in girls than that in boys at all ages except at 10 and 11 years old. In boys,%BF increased with age,while in girls it remained nearly constant from age 6 to 10 years old,and gradually increased from age 10 to 14 years old.Body mass index(BMI) increased steadily with age in both sexes,and boys had consistently higher BMI than girls.In boys,the increase in BMI was steeper from age 10 to 14 years old.Even in the subjects with BMI

Objective To investigate the role of community-based intervention among diabetic patients for the control of blood glucose,blood fat,blood pressure and body weight. Methods Patients in a specific community with type 2 diabetes mellitus were selected in the study,with 133 in the exercise group,200 in the integration group and 140 in the control group.Intervention and followup were conducted for 8 months,and clinical parameters including blood glucose were detected. Results Both exercise and integrated therapeutics could decrease the levels of fasting blood glucose(FBG) and postprandial 2-h blood glucose,with a more significant descending degree in the integration group than the exercise group(P

Acceleration ; Acyl-CoA Dehydrogenase, Long-Chain ; genetics ; Animals ; Aorta ; metabolism ; Cyclin-Dependent Kinase Inhibitor p21 ; genetics ; Gene Expression ; Heart ; Heme Oxygenase (Decyclizing) ; genetics ; Male ; Myocardium ; metabolism ; Rats ; Rats, Sprague-Dawley

In order to improve the production of agro-antibiotic 2-16,the producing strain(Streptomyces ahygroscopicus var.huangshanensis) was treated by protoplast regeneration,ultraviolet radiation,NTG mutagenesis and low energy C~(+) ion implantation.At last,a high-yield strain No.515 was obtained.The production of ~()No.515 was increased by 223.10%.By using Plackett-Burman design and Response Surface Analysis provided by SAS software,the cultivation condition of No.515 was optimized.The amount of agro-antibiotic 2-16 was increased by 38.53% when the strain No.515 was cultivated in the optimum medium instead of the initial one.

ObjectiveTo study the morphological and functional changes of thyroid in lactating rats and their offspring in iodine deficiency and iodine excess animal models.MethodsOne hundred and twenty Wistar rats(30 males and 90 females) were selected.Based on their body weight,the 90 females were stratified and randomly divided into five groups( 18 in each group):low iodine group 1 and group 2(fed with low iodine feed and deionized water containing iodine of 0,5 μg/L) ; high iodine group 1,group 2 and control group(feed with normal diet and deionized water containing iodine of 3000,10 000,50 μg/L).After fed for 3 month,all female rats were mated with males in a ratio of 3 ∶ 1.After birth for 10 days,8 female rats and their offspring in each group were sacrificed.Changes of thyroid were observed by naked eyes.The thyroid weight was measured and pathological changes of thyroids were observed under light microscope.Results①Absolute and relative weight of lactating rats thyroid in low iodine group 1 and group 2 [ (92.02 ± 24.40 ),(77.11 ± 23.32 )mg,(0.509 ± 0.072),(0.384 ± 0.089) mg/kg] were much higher than that of control group[ (17.41 ± 9.25)mg,(0.102 ± 0.016)mg/kg,all P＜ 0.05].Absolute and relative weight of lactating rats thyroid in high iodine group 1 and group 2[(8.22 ± 0.41 ),(9.42 ±0.43)mg,(0.047 ± 0.006),(0.035 ± 0.005)mg/kg] were lower than that of control group(all P ＜ 0.05).Absolute and relative weight of lactating rats and their offspring thyroid was decreased with increase of iodide intake in the diet.②Thyroid enlargement of lactating rats in low iodine group 1 and group 2 was evident,but that of high iodine group 1 and group 2 was not.③Epithelial cell hyperplasia and smaller follicular cavity were observed in low iodine group 1 and group 2 under light microscope.Epithelial cell deformation and mostly flat were observed in high iodine group 1 and group 2.ConclusionsThyroid morphology is changed with iodide intake in the lactating rats and their offspring,and the changes are consistent between female rats and their newborns.

Objective To observe the expression of Na+/I- symporter(NIS) in cultured lactating mammary cells with different levels of iodine and the effect of tumor necrosis factor-α(TNF-α). Methods Original generation of mouse lactating mammary cells cultured in vitro were divided into low iodine group Ⅰ (LI-Ⅰ), low iodine group Ⅱ (LI-Ⅱ), adequate iodine group(AI), high iodine group Ⅰ(HI-Ⅰ), and high iodine group Ⅱ(HI-Ⅱ). Cells were cultured in DEME/F12 culture medium for 24 h with different concentrations of iodine (0,5,50,3000 and 10 000 μg/L, respectively), and TNF-α( 10-2 mg/L) was added to some of cultured cells for 24 h. The expression of NIS mRNA of lactating mammary cells was determined by real-time quantitative PCR and the expression of NIS protein was detected by In-Cell Western. Results In iodine alone group, the expression of NIS mRNA in LI-Ⅰ group [ (64.66 ± 14.99) x 10-4] was higher than that of AI group[ (22.76 ± 7.36) × 10-4, P ＜ 0.01 ]; HI-I group[ (10.18 ±3.53) × 10-4] and HI-Ⅱ group[ (8.59 ± 2.89) × 10-4] were lower than that of AI group(all P ＜ .0.05); With increased iodine concentration, the expression of NIS mRNA decreased. The expression of NIS mRNA in LI-Ⅰ group [(2.72 ± 0.45) × 10-4], LI-Ⅱ group[ (2.69 ± 0.68) × 10-4] and AI group[(1.80 ± 0.67) × 10-4] with iodine plus TNF-o were all lower than that of LI-Ⅰ group, LI-Ⅱ group[ (29.82 ± 4.47 ) × 10-4], and AI group without TNF-α (all P ＜ 0.01). In iodine plus TNF-α, the expression of NIS mRNA in HI-Ⅰ group[(6.58 ± 2.87) × 10-4] and HI-Ⅱ[(7.04 ± 1.36) × 10-4] group were all higher than that of AI group(all P ＜ 0.05); With increased iodine deficiency or iodine excess, the expression of NIS mRNA increased. With increased iodine concentration, the expression of NIS protein decreased in iodine alone group. The expression of NIS protein in iodine plus TNF-α was all lower than that in iodine alone group. In iodine plus TNF-α, the expression of NIS protein increased in both iodine deficiency and iodine excess conditions. Conclusions Iodine may decrease the expression of NIS mRNA and protein of lactating mammary cells. The expression of NIS mRNA and protein of lactating mammary cells was inhibited by TNF-α under different levels of iodine.

BackgroundReactive oxygen intermediate products lead to the oxidative injury of cells.Retinal pigment epithelial(RPE) cells produce lots of reactive oxygen intermediate products during the swallow of out disc,but how this procedure cause the persistent oxidative injury of RPE cells is poorly understood.Objective The present study was to evaluate the effect of non-lethal H2 O2 -induced persistent oxidative injury on RPE barrier in vitro.MethodsARPE-19 cell links were inoculated on 96 well plate at the density of 8×104 cells/L and the cell climbing slice of 24 well at the density of 4× 104 cells/L.The cells were cultured in DMEM/F12 medium,and the cells cultured for 24 hours in free-serum medium were used in the experiment.0-0.6 mmol/L of H2O2 were added into the medium.Cellular viability was assessed using 3- ( 4,5-dimethylthiazol-2-yl ) -5- ( 3-carboxymethoxyphenyl ) -2- ( 4-sulfophenyl ) 2H-tetrazolium(MTS) assays.Transepithelial electrical resistance (TER) was used to detect cell monolayer forming time after cultureinTrsnswellchamber.Thepermeabilityof cellmonolayer was examinedbyrhodamine isothiocyanate-dextran transepithelial flux,and immunofluorescence was used to investigate the distribution of the junction protein zonula occludens (ZO-1).ResultsThe total difference was found in the cell vitality(A490) among the different concentrations of H2 O2 ( F =991.501,P =0.000 ).Compared with 0 mmoL/L H2 O2 group,the A490 values was gradually lowed from 0.20 mmol/L H2O2 group to 0.60 mmol/L H2O2 group (P ＜ 0.05 ).H2O2 at the concentrations of ＞0.20 mmol/L lowed the viability of RPE cells.The TER value was ( 24.9 ± 1.3 ) Ω · cm2 in 11 days,( 17.8± 1.4)Ω · cm2 in 7 days after inoculation on transwell chamber,showing a significant difference between them (t=5.228,P=0.014).RPE formed the stable tight junction on day 15 with the TER value (25.9±0.9 ) Ω · cm2.The leakage amount ( relative fluorescence intensity ) of the dextran was 255.39 ± 16.44 in non-H2 O2 control group,exhibiting a significant lowing in comparison with free-cell blank group (433.08±51.53)( t =12.515,P =0.006 ),and that of H2 O2 group was significant increased in comparison with non-H2 O2 control group ( t =14.412,P=0.005).Immunofluyorescence assay showed intact intercellular ZO-1 junction in non-H2O2 control group,but the breakage of ZO-1 junction was seen in H2O2 group.ConclusionsThe results indicate that non-lethal H2O2 can destroy RPE barrier and further lead to the persistent oxidative injury of RPE cells.

?AIM: To study the association of the single nucleotide polymorphism ( SNP) rs1157699 in the calcitonin receptor-like receptor ( CRLR ) gene with primary angle closure ( PAC) in a Han Chinese population.?METHODS: All samples, involved 232 PAC cases and 306 controls, were obtained from an epidemiologic survey conducted in Funing, Jiangsu Province, China. Genotyping were carried out by TaqMan-MGB probe using the real time quantitative polymerase chain reaction system to study the relationship between SNP of rs1157699 in CRLR gene and PAC.?RESULTS: The prevalence of CRLRrs1157699 genotype was 67.4%, 30.0%, 2.6% for CC, CT, TT in cases, and 71.3%, 27.0%, 1.7% in controls respectively.There was no difference between the two groups in the distribution of genotype and allele frequencies of rs1157699 (P>0.05).?CONCLUSION:Our results do not support a significant role for rs1157699 in CRLR with PAC.

Objective To investigate characteristics of glucose metabolism of non-obese and obese women with polycystic ovary syndrome (PCOS). Methods From May 2006 to April 2009, 1928 PCOS patients treated in Reproductive Medicine Center of Shandong Provincial Hospital Affiliated to Shandong University were enrolled in this study, which were divided into 901 cases [body mass index (BMI) ≥25 kg/m2] in obese group and 1027 cases in non-obese (BMI < 25 kg/m2) group. The prevalence of type 2 diabetes mellitus (T2DM), oral glucose tolerance test, impaired fasting glucose (IFG), impaired glucose tolerance(IGT) were compared between the two groups. Results (1) Blood glucose levels: at the time of fasting, 30, 60, 120 and 180 minutes, the levels of glucose were (5. 3±1.1), (9. 0±2. 4), (9. 3±4. 4),(7.5±2.8) ,(5.3±1.8)mmol/L in obese group and (5.0±0. 8) ,(8.4±3.5),(8.0±4.2),(6.5±3.2) ,(4. 9±1.6) mmol/L in non-obese group, which all showed statistical difference at every time point (P < 0. 01). (2)The level of insulin: at the time of fasting, 30, 60, 120 min, the level of insulin were (13±7), (81±51), (102±65), (83±63) mU/L in obese group and (8±5) ,(57±35) ,(62±44),(46±39) mU/L in non-obese group, which all showed statistical differenceatevery time point (P <0. 01). However, at time point of 180 minutes, the level of insulin did not exhibit significantly difference between obese and non-obese group (P > 0. 05). (3) The prevalence of abnormal glucose metabolism: the rate of IFG was 4. 98% (96/1928). The rate of abnormal glucose tolerance was 23. 08% (445/1928). The rate of IGT were 13.05% (134/1027) in non-obese group and 24. 20% (218/901) in obese group,which also showed remarkable difference (P < 0. 01). The rate of T2DM were 2. 53% (26/1027) in nonobese group and 7.44% (67/901) in obese group, which reached significant difference (P < 0. 01).Conclusion Abnormal glucose metabolism was observed more frequently in overweight or obese PCOS women.

Cerebral Palsy ; classification ; complications ; epidemiology ; Child ; Child, Preschool ; China ; epidemiology ; Developmental Disabilities ; complications ; Female ; Humans ; Infant ; Language Disorders ; complications ; Male ; Seizures ; complications ; Sex Factors ; Vision Disorders ; complications