OBJECTIVE: To study the effects of total saponins of Panax japonicus (TSPJ) on human leukemic HL-60 cells. METHODS: Human leukemic HL-60 cells were cultured in vitro. The cancer cell vigor was detected by using cell counting kit-8. Nitroblue tetrazolium (NBT) was used for measuring cell reduction. The cell cycle and the expression of differentiation antigen CD11b were detected by flow cytometry. RESULTS: Compared with the negative control group, TSPJ in different concentrations could decrease the vigor of HL-60 cells and the number of cells in S phase and up-regulate the CD11b expression, while the numbers of NBT positive cells and cells in G(0)/G(1) phase in the different concentrations of TSPJ-treated groups were increased. CONCLUSION: TSPJ can inhibit the HL-60 cell growth in vitro. Its mechanism may be related to inhibiting proliferation and inducing cell differentiation and cycle arrest.

Objective To explore environmental hazards of childhood leukemia and to determine hazardous suspects on childhood leukemia. Methods Using 1∶2 matched case-control study design,50 patients of leukemia and 100 controls selected from the Affiliated Hospital of Ningxia Medical College were investigated during Feb.2005-May 2007. Information was obtained by questionnaires, which included the general social demographic characteristics, disease history, the history of exposure to the materials during the child's mother pregnancy, indoor and outdoor environmental situation and the history of the families. Results The data showed that hazards for childhood leukemia were significantly associated with the history of infection(OR=0.452),diagnostic X-ray exposure (OR=0.157), the history of exposure to the chemical fertilizer and the pesticide during the pregnancy of mother(OR=3.150), the house type(OR=5.162), the nearest distance to the high voltage electricity (OR=2.383) and the radioactive source to the dwelling environment (OR=2.793) were important hazardous factors of the childhood leukemia. Conclusion The history of infection, diagnostic X-ray exposure, the history of exposure to the chemical fertilizer and the pesticide during the pregnancy of mother,the house type, the nearest distance to the high voltage electricity and the radioactive source to the dwelling environment might be the hazardous factors of the childhood leukemia.

Objective To investigate the proliferation and collagen secretion of transplanted human fibroblasts.Methods The solution containing human fibroblasts(2?1010L-1)was prepared and 1 mL was injected into the dermis of BALB/CNU nude mice.Animals were killed by the end of the 1st,2nd and 3rd month after injection.The dermis in the injected area was taken out and stained with HE.Immunohistochemical staining for type I and type Ⅲ collagen was performed at the same time.Results Mitosis was observed by the end of the 1st,2nd and 3rd month.The concentration of type I and type Ⅲ collagen in the extra cellular matrix increased with the passing of time.Conclusion Transplanted human fibroblasts can proliferate automatically in the dermis of nude mice and manufacture the type I and type Ⅲ collagen in situ.Long period of survival and secretion will make it possible for fibroblasts to become promising option to correct minimal tissue defects.

Aging changes of somatostatin (SS) mRNA-positive neurons in the dorsal hippocampus of old rats were studied by in situ hybridization histochemistry and image analysis. In the young rats,SS mRNA-positive cell bodies were mainly located in the pyramidal and polymorphic cell layers of the CA1 and CA2 regions, and in the strata radiatum and polymorphic cell layer of the CA3 region, and in the polymorphic cell layer of dentate gyrus. In the old rats,SS mRNA-positive cell bodies were concentrated in the polymorphic cell layer and denate gyrus. A marked decrease of number of SS mRNA-positive cell bodies and a significant increase of gray value of SS mRNA-positive cell bodies were found in the dorsal hippocampus and dentate gyrus of the old rats as compared with the young rats. No significant age difference in the sectional area of SS mRNA-positive cell bodies was observed in the dorsal hippocampus. The results showed that there were apparent changes with aging of the SS mRNA-positive cell bodies in the dorsal hippocampus of the rats. The significance of the changes remains to be studied further.

China ; Foundations ; Preventive Medicine ; economics ; Research Support as Topic ; statistics & numerical data

Objective To evaluate the effect of traditional Chinese medicine sputum discharge liquid on preventing ventilator-associated pneumonia(VAP).Methods A randomized double-blind,placebo-controlled study was con-ducted,according to the inclusion and exclusion criteria,patients with respiratory failure and mechanical ventilation in the intensive care unit (ICU)of a hospital in 2011 -2014 were selected and divided into treatment group and con-trol group.Treatment group received sputum discharge liquid in addition to conventional treatment,control group adopted simulation agent based on conventional treatment.The incidence,treatment effectiveness,occurrence time, and prognosis of VAP between two groups of patients were compared.Results A total of 139 patients were monitored,70 cases in treatment group and 69 in control group.The incidence of VAP in treatment group and con-trol group were 37.14% (n =26)and 57.97%(n =40)respectively;the average onset time of VAP in treatment group and control group were (76±3.2)hours and (45±8.9)hours after admission to ICU respectively;treatment effectiveness rates in treatment and control group were 88.46% and 55.00% respectively;the incidence,occurrence time,and treatment effectiveness rates of VAP between two groups of patients were both significantly different (all P <0.05).There were no significant difference in blood routine,liver and kidney function,urine routine,stool rou-tine,and electrocardiogram results between two groups of patients (all P >0.05 ).Conclusion Intervention in patients with mechanical ventilation by sputum discharge liquid can reduce the incidence of VAP,and has a positive effect on the prognosis of disease and pulmonary infection in patients.

Objective To test synchronization of cardiac mechanical contraction by means of advanced echocardiography and investigate the correlation of left ventricular ejection fraction (LVEF) and the indexes of mechanical dyssynchrony, and the relationship between DTI, STI and RT-3DE.Methods Control group (20 cases), chronic heart failure with a widened QRS complex (12 cases) and chronic heart failure with a shortened QRS duration (10 cases) were selected. We evaluated mechanical dyssynchrony with the DTI, the STI and the RT-3DE, and analyzed the correlation between the improvement degree of cardiac function and indexes of mechanical dyssynchrony, and the correlation between DTI, STI and RT-3DE. Results (1) In CHF groups (including shortened QRS group and widened QRS group), the indexes of synchronization of cardiac mechanical contraction were higher than control group ( <0.05) . (2) However, the indexes of mechanical dyssynchrony before operation showed no statistically significant difference between the widened QRS group and the shortened QRS group (>0.05) . (3) In CHF groups (including shortened QRS group and widened QRS group), the indexes of mechanical dyssynchrony before operation were higher more than after operation ( <0.05) . (4) In postoperation, the indexes of mechanical dyssynchrony showed no statistically significant difference between the widened QRS group and the shortened QRS group ( >0.05) . (5) There was a significant negative correlation between the LVEF and the indexes of mechanical dyssynchrony (<0.01) . (6) .In the indexes of synchronization of cardiac mechanical contractions, there are significant positive correlations between the DTI, the STI and the RT-3DE ( <0.01) . Conclusion Echocardiography can be used to screen CHF patients,and patients with left ventricular synchronous (including shortened QRS duration) can also be benefited from CRT.

Objective: To investigate the effect of enolase 1 (ENO1) expression on proliferation, apoptosis and migration of lung cancer PC14 cells. Methods: ENO1 over-expression vector-pcDNA3.1/ENO1 was constructed and transfected into PC14 cells at logarithmic growth phase with liposome LipofectamineTM 2000. G418 was used to screen PC14 cells that stably expressing ENO1. The effects of ENO1 over-expression on proliferation, migration and apoptosis of PC14 cells were detected by CCK-8 method, scratch-healing assay and flow cytometry, respectively. Results: The ENO1 over-expression cell model was successfully constructed. Compared with PC14-vehicle and wild-type PC14 cells, the mRNA and protein expression levels of ENO1 in PC14-ENO1 cells were significantly elevated (all P<0.05), and the proliferation of PC14-ENO1 cells was significantly increased (all P<0.05). The relative mobility of PC14ENO1 cells was significantly higher than that of pcDNA3.1-vehicle cells and wild-type PC14 cells ([13.26±1.13]% vs [8.46±1.11]%, [7.86±1.00]%, both P<0.05). There was no significant difference in apoptotic rate among PC14-ENO1, PC14-vehicle and PC14 cells (all P> 0.05) Conclusion: Over-expression of ENO1 promotes proliferation and migration of lung cancer PC14 cells.

OBJECTIVETo explore the therapeutic effect of acupuncture on convergence insufficient asthenopia with exotropia.

METHODSEighty cases of convergence insufficient asthenopia with exotropia were randomly divided into an acupuncture group and an eye drug treatment group, 40 cases in each group. The acupuncture group were treated with acupuncture at Jingming (BL 1), Taiyang (EX-HN 5), Chengqi (ST 1), Hegu (LI4); the eye drug treatment group were treated with local dropping of Aiweiduo. The therapeutic effects and changes of exotropia degree, collecting near point, cumulative score of eye symptoms were observed after 2 and 4 weeks of treatment.

RESULTSafter treatment for 2 and 4 weeks, the total effective rates were 87.5% and 92.5% in the acupuncture group which were significantly better than 65.0% and 70.0% in the eye drug treatment group (P<0.01); after treatment of 2 and 4 weeks, the collecting near point and the cumulative score of eye symptoms were significantly better than those before treatment (P<0.01); the acupuncture group in improvement of eye symptoms after treatment of 2 weeks and in collecting near point after treatment of 4 weeks was significantly better than the eye drug treatment group.

CONCLUSIONThe therapeutic effect of acupuncture on convergence insufficient asthenopia with exotropia is better than that of simple Aiweiduo treatment.

Acupuncture Points ; Acupuncture Therapy ; Adolescent ; Adult ; Asthenopia ; therapy ; Exotropia ; therapy ; Female ; Humans ; Male ; Middle Aged

Objective To explore the association between late-onset sporadic Parkinson' s disease (PD) and single nucleotide polymorphisms (SNPs) of Ca2+-dependent protease calpain inhibitor calpastatin (CAST) gene in a Chinese Han population.Methods 370 evaluable patients (221 male,149 female) with PD (mean age 65.2 ± 8.5 years) and 390 neurologically healthy controls (208 male,182 female) matched for gender,ethnicity,and area of residence.PD cases were identified from the PD cohort of the Chinese National Consortium on Neurodegenerative Diseases (www.chinapd.cn).A total of 24 tag-SNPs were genotyped capturing 95％ of the genetic variation across the CAST gene.Results There was no association found between any of the polymorphisms and PD in all models tested (co-dominant,dominant-effect and recessive-effect (P ＞ 0.05)).Similarly,none of the common haplotypes was associated with a risk for PD(P ＞ 0.05).Conclusion Results show no significant association between the CAST gene polymorphisms and late onset sporadic PD in the present population.