Beijing da xue xue bao. Yi xue ban = Journal of Peking University. Health sciences
-
Beijing Da Xue Xue Bao · Aug 2015
[Effects of sevoflurane on brain neuroapoptosis and ability of long-term learning and memory in newborn rats].
To investigate the changes of neuroapoptosis in brain and learning ability after neonatal mice are exposed to inhaled sevoflurane. ⋯ Exposure to the concentration of 2% sevoflurane causes brain cell apoptosis of newborn rats. The memory ability to pessimal stimulation is decreased as the anesthesia mice were 5-week-old, such changes recede along with the growth of the rats. Exposure to the concentration of 2% sevoflurane does not affect the spatial reference memory of newborn rats during their growth.
-
Beijing Da Xue Xue Bao · Jun 2015
Comparative Study[Comparison of simple pooling and bivariate model used in meta-analyses of diagnostic test accuracy published in Chinese journals].
To investigate the use of simple pooling and bivariate model in meta-analyses of diagnostic test accuracy (DTA) published in Chinese journals (January to November, 2014), compare the differences of results from these two models, and explore the impact of between-study variability of sensitivity and specificity on the differences. ⋯ Most DTA meta-analyses published in Chinese journals(January to November, 2014) combine the sensitivity and specificity by simple pooling. Meta-disc software can pool the sensitivity and specificity only through fixed-effect model, but a high proportion of authors think it can implement random-effect model. Simple pooling tends to underestimate the results compared with bivariate model. The greater the between-study variance is, the more likely the simple pooling has larger deviation. It is necessary to increase the knowledge level of statistical methods and software for meta-analyses of DTA data.
-
Beijing Da Xue Xue Bao · Jun 2015
[Data of the quantitative orofacial somatosensory functions of healthy subjects and its influence factors analysis].
To establish the preliminary somatosensory data stratified by gender, age group, and sites in the trigeminal region through standardized quantitative sensory testing on healthy individuals, and to evaluate the effects of gender, age, and sites on somatosensory functions. ⋯ The preliminary orofacial somatosensory data of Han Ethnicity stratified by gender, age group, and sites were established. The study evaluated the effects of gender, age and sites on orofacial somatosensory functions by employment standardized quantitative sensory testing.
-
Beijing Da Xue Xue Bao · Apr 2015
[Clinical research of percutaneous vertebroplasty or percutaneous kyphoplasty for treating osteoporotic vertebral compression fractures induced by glucocorticosteroid].
To investigate the clinical characteristics of vertebral compression fracture (VCF) in glucocorticosteroid-induced osteoporosis (GIOP) and risk of vertebral refracture after percutaneous vertebroplasty (PVP) or percutaneous kyphoplasty (PKP). ⋯ The predilection site of VCF was similar in GIOP and primary osteoporosis (thoracolumbar segments> thoracic segments> lumbar segments). The risk of multiple segments VCF was higher in GIOP than in primary osteoporosis. The risk of vertebral refractures after PVP or PKP was higher in GIOP than in primary osteoporosis.
-
Beijing Da Xue Xue Bao · Apr 2015
[Analysis of vertebrobasilar dolichoectasia based on computational fluid dynamics].
To analyze the hemodynamic states of vertebrobasilar dolichoectasia based on computational fluid dynamics technique. ⋯ CFD numerical simulation maybe can provide a theoretical basis for the role of hemodynamic factors in occurrence and development of VBD.