Acute Lung Injury ; epidemiology ; etiology ; therapy ; Humans ; Respiratory Distress Syndrome, Adult ; epidemiology ; etiology ; therapy

Rat with amputation operation stress possessed a decline of NK activity and splenocyte pro-liferation to mitogen ConA.Amygdaloid nuclei lesion could antagonize the decrease of those ofcell-mediated immunity.Further results showed that serum corticosterone and methionine-enkephahn was high in stress' rats.Amugdaloid Nuclei lesion could antagonize the increase ofserum corticosterone level,but seem no dffeet on serum methionine-enkephalin level,thereforesuggesting that it is related to ratio of corticosterone to enkephalin changed by decrease of corti-costerone that amygdaloid neuclei lesion antagonized the decline of immunogical function inducedby stress.

Objective To analyse the pathogenesis,diagnosis and treatment of tethered cord syndrome(TCS) and to improve the knowledge of the disease.Method The clinical data of 16 cases with TCS who underwent surgical lysis were analyzed,retrospectively.Results Thirteen cases were followed-up for 6 months to 1 year.Three cases with handicap of lower limb function and aesthesia and rectum and bladder sphincter dysfunction got good outcome,and 2 cases showed no improvement,while 10 cases with no symptoms(didn′t) appear TCS.Conclusions It is necessary to diagnose and manage as early as possible.The tethered cord lysis can relieve the symptoms of some cases and control development of TCS.

Adolescent ; Adult ; Female ; Humans ; Male ; Middle Aged ; Occupational Exposure ; Occupational Health Services ; Physical Examination ; statistics & numerical data ; Young Adult

Acute Disease ; Herbicides ; poisoning ; Humans ; Paraquat ; poisoning

Objective To investigate the effects of different doses of ketamine on spatial cognitive function and the expression of mRNA and protein of N-methyl-D-uspartate (NMDA) receptor subunits NR1 and NR2B in the hippocampus of aged rats.Methods Forty SD rats of both sexes aged 15 months weighing 470-570 g were randomly divided into 4 groups (n=10 each) : one control group (C) and three ketomine groups (K1 ,K2 ,K3).The animals in group K1 ,K2 and K3 received intraperiteneal(IP) ketaminc 10,20 and 100 mg/kg respectively once a day for 3 days,whereas the animals in control group received IP normal saline instead of ketamine.One day after the last drug administration,the animals underwent Morris water maze test 4 times a day for 3 consecutive days.The animals were killed within 1 h after the last test for determination of the expression of NR1 mRNA and NR2B mRNA (using RT-PCR) and protein (using immuno-histochemistry) in the hippocampus.Results The latency period and swimming distance of water maze test were significantly longer on the 2nd and 3rd days in group K3 than in control group.The NR2B mRNA and protein expression was significantly lower in group K3 than in control group.Conclusion Anesthetic dose of ketamine decreases spatial cognitive function and the expression of NR2B mRNA and protein in aged rats whereas subanesthetic doses of ketamine do not.

ObjectiveTo investigate the effect of propofol on IL-1β and TNF-α release from BV-2 microglia cells induced by lipopolysaccharide (LPS) and the role of Toll-like receptor 4 (TLR4).MethodsBV-2 microglia cells were seeded in 96-well plates and randomly divided into 4 groups ( n =12 each):control group,LPS group,propofol group (group P) and LPS + propofol group.In group LPS,the cells were incubated with LPS 1 μg/ml for 24 h.In group P,the cells were incubated with propofol 30 μmol/L for 24 h.In group LPS + propofol,the cells were incubated with LPS 1 μg/ml and propofol 30 μmol/L for 24 h.The concentrations of TNF-α ( at 6 h of incubation) and IL-1β (at 24 h of incubation) in the supernatant were detected by ELISA.TLR4 mRNA expression was detectedat at 6 h of incubation by RT-PCR.TLR4 protein expression was detected at 24 h of incubation by Western blot.ResultsCompared with control group,IL-1β and TNF-α release was significantly increased,and the expression of TLR4 mRNA and protein up-regulated in groups LPS and LPS + propofol ( P ＜ 0.05).Compared with group LPS,IL-1β and TNF-α release was significantly decreased,and the expression of TLR4 mRNA and protein down-regulated in group LPS + propofol (P ＜ 0.05 ).Conclusion Propofol can inhibit IL-1β and TNF-α release from BV-2 microglia cells induced by LPS and inhibition of TLR4 expression may be involved in the mechanism.

Objective To explore the relationship between the microsatellite markers on chromosome 6 and the phenotypes of atopy. Methods Sixteen microsatellite markers on chromosome 6 were evaluated in 20 affected sib pair and trios families. Linkage disequilibrium analysis was conducted according to asthmatic phenotypes (total IgE, skin prick test, bronchial hyper responsiveness and eosinophil) by ETDT software system. Results Significant P value( P

Objective To investigate the effects of silymarin on expressions of nuclear factor kappa B(NF-?B) and intercellular adhesion molecule-1(ICAM-1) in the kidneys of rats with unilateral ureteral obstruction(UUO)-induced renal fibrosis.Methods Seventy-two male Sprague-Dawley rats were randomly divided into 3 groups: sham-operated group(n=24),operated group(n=24) and silymarin treated group(n=24).Renal tubulointerstitial fibrosis model was established via UUO.Silymarin was given by gavage with 30 mg/(kg?d) in silymarin treated group,and the same volume normal saline was given by gavage in operated group and sham-operated group.In each group,8 rats were killed at 7,14 and 21 d after operation.Histological changes were observed in tubulointerstitial injury under microscope.The expressions of NF-?B and ICAM-1 in renal tissue were determined with immunohistochemical method.Results Tubuloin-terstitial injury scores in operated group at 7,14 and 21 d were 1.168?0.108,1.776?0.064 and 2.301?0.157,respectively,and Tubulointerstitial injury scores in the treated group at 7,14 and 21 d were 1.043?0.114,1.677?0.083 and 2.084?0.201,respectively.Tubulointerstitial injury scores in silymarin treated group were significantly lower than those in operated group(Pa

Good clinical practice should be based on evidence. Evidence quality should be based on critical appraisal in evidence based medicine (EBM). Evaluation of evidence quality plays an important role in evidence level clarifying, which is the core of EBM. Different recommendations for clinical practice often derive from evidence levels. Thus evidence quality evaluation is the first and most important step in EBM. There are lots of standards to evaluate evidence quality in the world. However there are two aspects of the evaluation, one is methodological evaluation and the other is reporting evaluation. This article collected a series of standards for clinical trials quality evaluation according to different research designs. It is hoped that the resource and introduction about the quality evaluation of clinical trials be helpful for medical researchers in China. Only being familiar with all kinds of standards of methodology and reporting, researchers could publish high quality scientific papers.
Biomedical Research ; Evidence-Based Medicine ; Guidelines as Topic ; Humans ; Meta-Analysis as Topic ; Randomized Controlled Trials as Topic