Adult ; Burns, Inhalation ; diagnostic imaging ; Explosions ; Follow-Up Studies ; Humans ; Male ; Middle Aged ; Radiography

OBJECTIVETo study the role of Ezh2 in the all-trans retinoic acid RA induced P19 neural differentiation.

METHODSThe expression of Ngn1 in the RA induced P19 cells was detected at the mRNA and protein levels using real time RT-PCR and Western blot assays. The binding of Ezh2 and H3K27me3 on the Ngn 1 promoter was analyzed using chromatin immunoprecipitation assay.

RESULTIn the RA induced P19 cells, the recruitment of Ezh2 and its methylated substrate H3K27me3 on the promoter of Ngn 1 gene elevated in the first 2 days, and then declined rapidly, followed by the initiation of neuronal differentiation.

CONCLUSIONSEzh2 produces a repressive histone mark H3K27me3 in the early stage of RA induced P12 cells. By avoiding the premature expression of Ngn1 gene, Ezh2 can ensure the normal differentiation of P19 cells.

Animals ; Basic Helix-Loop-Helix Transcription Factors ; genetics ; metabolism ; Cell Differentiation ; drug effects ; physiology ; Enhancer of Zeste Homolog 2 Protein ; Histone-Lysine N-Methyltransferase ; genetics ; metabolism ; Histones ; metabolism ; Mice ; Nerve Tissue Proteins ; genetics ; metabolism ; Neurons ; cytology ; drug effects ; metabolism ; Polycomb Repressive Complex 2 ; Tretinoin ; pharmacology ; Tumor Cells, Cultured

OBJECTIVETo explore the relationship between aggressive behaviors, parent-child separation and experience of childhood abuse among junior high school students.

METHODSA total of 1417 students in ordinary junior high schools from 3 townships in Huoshan, Anhui were involved in this study. Self-made questionnaire was used to estimate aggressive behaviors, parent-child separation in childhood, child abuse and social demographic information of the students under this study.

RESULTSRelated scores (2.52 ± 0.78) on physical aggression in boys was higher than in girls (2.29 ± 0.79) while the scores related to anger (2.60 ± 0.82) and hostility (2.58 ± 0.80) in girls, were higher than those in boys (2.41 ± 0.75, 2.47 ± 0.78), all with statistically significant differences (P < 0.05). Scores related to different types of aggressive behaviors and the scores in total, were higher in students from the senior class (P < 0.001). Scores on items as verbal aggression, hostility and in total, were higher in those adolescents which had undergone maternal-child separation during their childhood (P < 0.05). Scores on hostility and in total, were higher in those adolescents which had suffered from father-child separation during their childhood (P < 0.05). Scores related to anger, hostility and in total, were higher in those adolescents which had undergone both parent-child separation when they were much younger (P < 0.05). Students who had suffered from various types of repeated abuse showed higher scores in various types of aggressive behaviors and in total, than those who did not have the same experience. Most of the differences among groups were statistically significant (P < 0.05).

CONCLUSIONStudents that suffered parent-child separation in their earlier childhood and with repeated experiences of abuse in childhood appeared to be risk factors causing aggressive behaviors to develop during the age of adolescence.

Adolescent ; Aggression ; Child ; Child Abuse ; Female ; Humans ; Male ; Risk Factors ; Schools ; Students ; Surveys and Questionnaires

Introduction:The 2010 targets of the China Hepatitis B Prevention Programme were a prevalence of hepatitis B surface antigen (HBsAg) less than 1.0% for children less than five years old and less than 6.0% for the total population. This survey assessed the prevalence of Hepatitis B infection in Lianyungang, Jiangsu province, China in 2009–2010.Methods:Multistage sampling was used with 2372 subjects among 17 selected villages. Blood specimen collection and testing by enzyme-linked immunosorbnet assay (ELISA) were completed using the following markers for hepatitis infection: HBsAg and antibody to HBsAg (anti-HBs); hepatitis B e antigen (HBeAg) and antibody to HBeAg (anti-HBe); and hepatitis B core antibody (total anti-HBc). The data were analysed with Epi Info, version 3.3.2.Results:The prevalence of HBsAg was 2.4% (95% Confidence Interval [CI]: 1.8–3.0; Adjusted Prevalence [AP] 2.9%); anti-HBs prevalence was 51.1% (95% CI: 49.1–53.1; AP 49.2%) and total anti-HBc prevalence was 41.7% (95% CI: 39.8–43.7; AP 45.5%). The prevalence of HBsAg and total anti-HBc positivity increased from young to older age groups, yet the prevalence of anti-HBs positivity decreased from young to older age groups (P< 0.001 for all). There was no difference in the prevalences of HBsAg and anti-HBs among females and males (P= 0.108 and 0.089), but females had a higher prevalence than males for total anti-HBc positivity (P< 0.001). Discussion: This survey showed that in 2010 the prevalence of HBsAg among children aged less than five years was lower than the national target of 1.0% and that the prevalence of HBsAg for the total population was lower than the national target of 6.0%.

OBJECTIVETo observe the expression of vascular smooth muscle cells calcium channel α1C subunit (LTCCα1C) in rats exposed in low temperature.

METHODSCold-induced hypertension was established and blood pressure was measured every two weeks. The mRNA expression of L type calcium channel α1C was determined by RT-PCR.

RESULTSThe blood pressure of the rats exposed to cold environment increased. The blood pressure of experimental groups [(102.8 ± 2.25) mm Hg] began to increase from the first two weeks, compared with the control group [(89.2 ± 3.73) mm Hg], there were significant difference (P < 0.05). The blood pressure of experimental groups were (114.5 ± 4.21), (121.9 ± 3.03) mm Hg respectively at 4, 6 weeks. Compared with the control group, the expression of LTCCα1C mRNA of the cold exposure group increased significantly (P < 0.01). There was a significant correlation between the expression of LTCCα1C mRNA and the blood pressure of the rats (r = 0.86, P < 0.01).

CONCLUSIONRepeated cold exposure can establish cold-induced hypertension, and the level of vascular smooth muscle cells LTCCα1C expression increase.

Animals ; Blood Pressure ; Calcium Channels, L-Type ; metabolism ; Cold Temperature ; adverse effects ; Hypertension ; Muscle, Smooth, Vascular ; metabolism ; Rats ; Rats, Sprague-Dawley

The cardiovascular circulation feedback control treatment instrument (CFCTI) is an automatic feedback control treatment system, which has the function of monitoring, alarming, trouble self-diagnosis and testing on the line in the closed loop. The instrument is designed based on the successful clinical experiences and the data are inputted into the computer in real-time through a pressure sensor and A/D card. User interface window is set up for the doctor's choosing different medicine. The orders are outputted to control the dose of medicine through the transfusion system. The response to medicine is updated continually. CFCTI can avoid the man-made errors and the long interval of sampling. Its reliability and accuracy in rescuing the critical patients are much higher than the traditional methods.
Automation ; instrumentation ; Cardiovascular System ; Feedback ; Medication Systems

Objective To investigate selcnium(Se) levels of environment and human body in Gaomi City and Zichuan District of Shandong. Methods Lijiaying Township in Gaomi City of Weifang City, Zhaili Township and Longquan Township in Zichuan District of Zibo City were selected. Two farming soil samples at different spot, local wheat and corn, residents nail samples from 3 to 4 families were collected in each natural village in the investigated towns. The contents of Se were detected by 2,3-diamino naphthalene fluorescence method. Results Se level of the soil, wheat, corn, and nails in Lijiaying [(0.054 ± 0.019), (0.022 ± 0.009), (0.018 ± 0.007), (0.365 ± 0.108)mg/kg] was significantly lower than that in Zhaili [(0.425 ± 0.080), (0.130 ± 0.043), (0.098 ± 0.026), (0.751 ± 0.134)mg/kg] and Longquan[(0.487 ± 0.153), (0.112 ± 0.030), (0.097 ± 0.029), (0.735 ± 0.145)mg/kg;P < 0.01]. In Lijiaying, Se was deficient in soil, wheat, corn(< 0.200, < 0.025 mg/kg), above Se deficiency diagnosis and below Se-adequate level in the nail, while in Zhaili and Longquan, the Se level in the soil (0.425, 0.487 mg/kg), wheat(0.130, 0.112 mg/kg), corn (0.098, 0.097 mg/kg), nails (0.751, 0.735 mg/kg) was adequate (≥0.400 mg/kg). Conclusions The external environment is Se-deficient in Lijiaying, Se-adequate in Longquan and Zhaili. The selenium level in human body is consistent with the external environment.

OBJECTIVETo investigate the inhibitory effect of grape seed extract (GSE) on the growth of prostate cancer PC-3 cells.

METHODSPC-3 cells were treated with GSE at the concentration of 100, 200 and 300 microg/ml for 24, 48 and 72 hours, respectively. The the inhibitory effect of GSE on the growth of the PC-3 cells and the kidney cells of SD rats was determined by MTT reduction assay, with primarily cultured kidney cells of 1-3 days old SD rats as the normal control.

RESULTSGSE significantly inhibited the growth of PC-3 cells in a concentration- and time-dependent manner, but had only a mild inhibitory effect on the kidney cells.

CONCLUSIONGSE inhibits the growth of prostate cancer PC-3 cells and can be used as a new drug for the treatment of prostate cancer.

Animals ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; Cell Survival ; drug effects ; Cells, Cultured ; Dose-Response Relationship, Drug ; Humans ; Kidney ; cytology ; Male ; Plant Extracts ; pharmacology ; Prostatic Neoplasms ; pathology ; Rats ; Rats, Sprague-Dawley ; Seeds ; chemistry ; Time Factors ; Vitis ; chemistry

Objective To identify and analyze the genetic characteristics of nucleoprotein (N) and glycoprotein (G) genes of rabies virus (RABV) isolated from a donkey in Wuhan.N gene and G gene of the virus were compared with other representative street strains isolated around Hubei areas as well as the vaccine strains used in China and abroad.Methods RABV in brain tissue of a donkey was detected by direct immunofluorescent method and then inoculated in suckling mice to observe the incidence of rabies.Brain samples of the donkey and infected suckling mice were detected by ELISA.The N gene and G gene fragment of the isolated RABV were amplified by RT-PCR and cloned into pMD18-T vector for sequencing and genetic analysis.Results RABVs were detected in both donkey brain and suckling mice brain samples.The N gene and G gene nueleotide homology of RABV isolated from the donkey with other representative street strains found around Hubei areas as well as vaccine strains used in China and abroad were 85.7％-99.1％ and 82.2％-99.7％,and the deduced amino acid identity were 95.6％-99.8％ and 87.8％-99.4％,respectively.Conclusion Novel RABV was successfully identified and isolated from a donkey and showed close relationship to the representative street strains found around Hubei areas as well as vaccine strains used in China through genetic analysis.

OBJECTIVETo explore the effective therapy for maintenance hemodialysis patients in dificiency syndrome in end-stage renal disease.

METHODSNinety-seven cases were divided into an observation group (51 cases) and a control group (46 cases) randomly, and routine western medicine was used in both of them. On this base, moxibustion was used in Zusanli (ST 36) and Sanyinjiao (SP 6) in paper-tube-moxibustion equipment in the observation group. Evaluate the therapeutic effect on symptoms by comparing the symptom scores in two groups before and after treatment.

RESULTSAll the symptom scores in the observation group were improved after treatment, and the differences were significant (all P < 0.05). Among all symptoms, the most improved ones included lassitude and fatigue, short breath and aversion to talk, poor appetite, soreness and softness of waist and knees, aversion to cold, cold extremities and so on. In the aspect of therapeutic effect on symptoms, the total effective rate in observation group (64.7%, 33/51) was higher than that in control group (23.9%, 11/46), and the difference was significant (P < 0.05).

CONCLUSIONMoxibustion can improve the clinical symptoms of maintenance hemodialysis patients in end-stage renal disease, and can generate some therapeutic effect to the dificiency syndrome of this disease.

Acupuncture Points ; Adult ; Aged ; Female ; Humans ; Kidney Failure, Chronic ; therapy ; Male ; Middle Aged ; Moxibustion ; Renal Dialysis ; Young Adult