Adolescent ; Child ; Child, Preschool ; CpG Islands ; Cyclin-Dependent Kinase Inhibitor p15 ; genetics ; DNA Methylation ; Female ; Humans ; Leukemia, Myeloid, Acute ; genetics ; Male ; Promoter Regions, Genetic

Objective To evaluate the anti-tumour effect of 60℃ LipiodoI in the embolization of VX_2 hepatocarcinoma in rabbits.Methods VX_2 carcinoma cells were surgically implanted into the left liver lobe in 30 male New Zealand white rabbits,which were randomly divided into 3 groups by figure and table method with 10 rabbits in each group.Physiological saline,Lipiodol(37℃),and Lipiodol(60℃)were injected in each group via hepatic artery and liver cancer was embolized.The volume of tumour and serum level of aspartate aminotransferase(AST)were observed after one week,and the survival period of VX_2 rabbits was also observed.Results In the group of Lipiodol(60℃),the growth rate of tumour(0.92? 0.21)was significantly lower than that of control group(3.48?1.17)and Lipiodol(37℃)groups (1.69?0.26),respectively(F=34.95,P0.05),but was significantly higher than the control group(68.6?6.6)U/L(t=19.24,P

Objective: To observe the clinical efficacy of combining auricular point sticking and a healthy diet to treat simple obesity in children aged 6-9 years old.Methods: A total of 190 eligible obese kids were divided into an observation group and a control group using the random number table method, with 95 cases in each group. The observation group was intervened by auricular point sticking plus guide on a healthy diet, while the control group was only provided with the guide on a healthy diet. The therapeutic efficacy was observed after intervention for three consecutive months, as well as the changes in body mass (BM), body mass index (BMI), waist circumference (WC), hip circumference (HC), and subcutaneous fat thickness. Results: After the 3-month intervention, the total effective rate was 91.6％ in the observation group, versus 74.7％ in the control group, and the between-group difference was statistically significant (P<0.01); in both groups, the BM, BMI, WC, HC, and subcutaneous fat thickness all decreased significantly (P<0.05), and were lower in the observation group than in the control group, showing statistical significance (P<0.05). Conclusion: Auricular point sticking plus a healthy diet is safe and effective in treating simple obesity in children, producing more significant efficacy than healthy diet intervention alone.

Objective To investigate the protective effect of propofol pretreatment against hepatic ischemia-reperfusion injury and oxidative stress in rats and the mechanism of the role of GSK-3 β.Methods Sixty SD rats were randomly divided into four groups:sham operation group (S group),ischemia-reperfusion group (I-R group),propofol pretreatment group (P group),TDZD-8 pretreatment group (T group).The hepatic ischemia-reperfusion rat models were established by the method of Nauta.Rats were subjected to 30-min,60-min and 90-min 70％ warm ischemia of liver followed by reperfusion for 120 min,respectively.Propofol (12 mg/kg · h) was injected via femoral vein 30 min before ischemia till the end of reperfusion in P group and TDZD-8 (1 mg/kg) were injected via femoral vein 20 min before ischemia in T group.The animals were killed at 120 min after reperfusion.Blood samples and the liver tissue were obtained.The levels of alanine aminotransferase (ALT),aspartate aminotransferase (AST),lactate dehydrogenase (LDH),malondialdehyde (MDA) and superoxide dismutase (SOD) were analyzed.Liver morphological changes were observed using optical microscopy.p-GSK-3β Ser9 and total GSK-3 β expression was determined by Western blot.Results Compared with S group,AST,ALT,LDH and MDA level was increased,SOD level was reduced,and p-GSK-3 β Ser9 expression was significantly reduced in I-R group.Compared with I-R group,the content of AST,ALT,LDH and MDA was reduced significantly,SOD increased significantly,and the content of p-GSK-3β Ser9 increased significantly in P group and T group.There were no significant differences between P group and T group.The hematoxylin-eosin staining of hepatic tissues revealed in I-R group had severe structural damage and periportal inflammatory cells infiltrated,hepatocyte necrosis and sinusoidal congestion.In P group and T group,liver tissues had normal structure,less cell death,edema and inflammatory cell infiltration.Conclusions Propofol can significantly reduce hepatic ischemia reperfusion injury by reducing oxidative stress and lipid hydroperoxides.This protective effect of Propofol may be associated with the inhibition of GSK-3 β by GSK-3 β Ser9 phosphorylation.

A study was performed to validate 3 FMDV 3ABC-I-ELISA kits developed in China for the differentiation of FMDV infected and vaccinated animals.Sets of sera from naive and vaccinated cattle as well as from cattle that had been infected were tested for antibodies against nonstructural proteins (NSPs) of FMDV by commercial diagnosis kits,Ceditest(R)FMDV-NS (Ceditest(R) kit),UBI(R) FMDV NONSTRUCTURAL PROTEIN ELISA DIRECTION INSERT (UBI(R) kit) and a FMDV 3ABC-I-ELISA kitdeveloped at the Lanzhou Veterinary Research Institute.The test parameters (sensitivity and specificity) of the three kits were determined,and the result obtained from FMD 3ABC-I-ELISA kit was compared with that obtained from two foreign kits.The results indicated that the coincidence rate between the FMDV 3ABC-I-ELISA and Ceditest(R) kits was 98.05%,and the coincidence rate between the FMDV 3ABC-I-ELISA and UBI(R) kits was 94.4%; the sensitivity of both Ceditest(R) and FMDV 3ABC-I-ELISA kit was 100%.However,the sensitivity of the UBI(R) kit was only 81.8%.With sera from naive or vaccinated non-infected animals,the specificity of all tests exceeded 90%.

An offline two-dimensional system combining a rat cardiac mascle cell membrane chromatography time-of-flight mass spectrometry （CMC-TOF/MS） with a high performance liquid chromatography time-of-flight mass spectrometry （HPLC-TOF/MS） was established for investigating the parent components and metabolites in rat urine samples after administration of the roots of Aconitum carmichaeli. On the basis of the analysis of the first dimension, retention components of the urine sample were collected into 30 fractions （one fraction per minute）. Then offline analysis of the second dimension was carried out. 34 compounds including 24 parent alkaloids and 10 potential metabolites were identified from the dosed rat urine, and then binding affinities of different compounds on cell membranes were compared and influences of some functional groups on activity were estimated with the semi-quantification and curve fitting method. As a result, binding affinities decreased along with the process of deacylation, debenzoylation and demethylation, which may be related to the alleviation of toxicity in the procedure of herb processing or metabolism. Moreover, some minor components in rat urine （Songorine, 14-benzoylneoline, Deoxyaconitine, etc. ） exerted relatively strong affinity on cell membranes are worth exploring. The results delivered by the system suggest that the CMC can be applied to in vivo study.

OBJECTIVETo establish a reliable model for drug screening and therapy by culturing rat femoral head and inducing cartilage degeneration quickly in vitro.

METHODSThe femoral heads from the same SD rats of two-month old were divided into control group and experimental group respectively. They were cultured with DMEM medium plus 10% fetal bovine serum or DMEM medium plus 10% fetal bovine serum plus 50 ng/ml IL-1β for three days. Femoral heads were fixed in 4% paraformaldehyde, decalcified, dehydrated, embedded in paraffin and cut into slices. Specimens were stained with Toluidine blue and Safranine O-Fast Green FCF. The protein expression levels of type II collagen, MMP13, Sox9 and ADAMTS5 were analyzed by immunofluorescence.

RESULTSBoth the Toluidine blue and Safranine O staining were pale in the margin of femoral heads which were stimulated with IL-1β for three days compared to that in control group. The Fast Green FCF staining was positive at the edge of the femoral head in experimental group, which indicated that cartilage became degenerated. The expression levels of both type H collagen and Sox9 were decreased significantly while the expression levels of MMP13 and ADAMTS5 were increased in experimental group.

CONCLUSIONThe model of cartilage degeneration is established by culturing and inducing the degeneration of the femoral heads quickly in vitro.

Animals ; Cartilage Diseases ; genetics ; metabolism ; Collagen Type II ; genetics ; metabolism ; Disease Models, Animal ; Femur Head ; metabolism ; Humans ; In Vitro Techniques ; Interleukin-1beta ; genetics ; metabolism ; Male ; Matrix Metalloproteinase 13 ; genetics ; metabolism ; Rats ; Rats, Sprague-Dawley ; SOX9 Transcription Factor ; genetics ; metabolism

This study aimed to analyze the etiology of the encephalitis outbreak in Longyan, Fujian Province, China in 2010, in order to provide valuable information for this prevention and control of this disease. Pathogens were confirmed from cerebrospinal fluid samples with fluorescent RT-PCR, virus isolation (RD cells), and neutralization tests. Then, the VP1 fragments or whole genome nucleotide sequences were determined for four virus strains using PCR. Homology was assessed using the MegAlign software, and a phylogenetic evolutionary tree was drawn using Mega 4.0 software. The results confirmed that the etiology of the outbreak was the ECHO6 intestinal virus, and the nucleotide sequence of the VP1 segment indicated that the C2 subtype was responsible. The genome sequence consisted of 7407 nucleotides, and resembled the genome of other ECHO and CoxB viruses with homology levels of 78.5%-87.3%. The encephalitis outbreak in Longyan in 2010 was caused by the ECHO6 C2 subtype intestinal virus, and its complete genome sequence length is similar to the standard strain (U16283) with a sequence homology of 80.4%.
Child, Preschool ; China ; epidemiology ; Disease Outbreaks ; Echovirus 6, Human ; classification ; genetics ; isolation & purification ; Echovirus Infections ; epidemiology ; virology ; Encephalitis ; epidemiology ; virology ; Female ; Humans ; Infant ; Male ; Molecular Sequence Data ; Phylogeny

The aim of semen cryopreservation research is to elevate the proportion of competent spermatozoa after thawing. By means of molecular biology, the research of spermatozoa injury during cryopreservation reaches molecular level. In each stage of cryopreservation, there exists its own optimal condition for cooling. Cryopreservation medium still need to be improved. Men should pay more attention to the field of spermatozoa function. Assisted reproductive technology (ART) has a close relationship with the technology of semen cryopreservation. The latter's development will improve the former.
Animals ; Cryopreservation ; methods ; Humans ; Male ; Reproductive Techniques, Assisted ; Semen Preservation ; methods

Background Experimental data have shown tnat polymorpnisms in tne angiotensm-converting en- zyme 2(ACE2)gene are related to echocardiographically determined parameters of left ventricular mass,structure or function in the general population whether ACE2 genotype influences the effect of angi0tensin Ⅱ receptor blocker which improve left ventricular remodeling and function is unknown.Objective To investigate the association be- tween ACE2 gene G9570A polymorphism and the effect of irbesartan on left ventricular structure and function in hy- pertensive patients.Methods Two hundred and five male patients and 190 female patients who were preliminaryly diagnosised with mild and moderate essential hypertension were treated with irbesartan for 48 weeks with initial dose of 150 mg/d and titrated to 300 mg/d to reach the targed BP.Gene polymorphisms of ACE2 G9570A were detected by PCR-RFLP methods.The association between changes in the SBP,DBP,parameters of left ventricular struc- ture and function and genotypes of the ACE2 gene locus were analyzed.Results Irbesartan reducted in blood pres- sure in all patients(P