Cytomegalovirus ; genetics ; Cytomegalovirus Infections ; virology ; DNA, Viral ; genetics ; Female ; Genotype ; Hepatitis, Viral, Human ; virology ; Humans ; Infant ; Infant, Newborn ; Male ; Polymorphism, Restriction Fragment Length ; Viral Envelope Proteins ; genetics

Objective To investigate the distribution of complications and the relationship with neurologic subtype and gross motor function in preterm infants with cerebral palsy (CP). Methods The type, grade of Gross Motor Function Classification System (GMFCS), intelligence,speech, ophthalmologic consultation, brainstem auditory evoked potential and electroencephalogram of 135 preterm infants with CP were reviewed. Results There were 284 complications in total, (2.10±1.33) per child, and was significantly different among various types of CP (F=5.50, P<0.001). The incidence of mental retardation and speech disorder was significant different among various types (P<0.05). The incidence of mental retardation, speech disorder, visual impairment and epilepsy increased significantly (P<0.05) in spastic quadriplegia infants,compared with those with diplegia and hemiplegia. The incidence of mental retardation, speech disorder, visual impairment and musculoskeletal disorder was significantly different (P<0.05) among various grades of GMFCS. The frequency of complications was more in children unable to walk (GMFCS Ⅳ~Ⅴ) than able to walk (GMFCS Ⅰ~Ⅲ) for children over 2 years old (t=70.05, P<0.001). Conclusion The incidence of mental retardation, speech disorder, visual and hearing impairment, secondary musculoskeletal disorder and the multiple disorders are related with neurologic subtype and/or the grade of GMFCS.

Aged ; Antigens, CD ; metabolism ; Antigens, Differentiation, Myelomonocytic ; metabolism ; Carcinoma, Signet Ring Cell ; metabolism ; pathology ; surgery ; Diagnosis, Differential ; Gastrectomy ; methods ; Histiocytic Sarcoma ; metabolism ; pathology ; surgery ; Humans ; Lymphatic Metastasis ; Male ; Phosphoglucomutase ; metabolism ; Stomach Neoplasms ; metabolism ; pathology ; surgery

Fatal Outcome ; Humans ; Infant, Low Birth Weight ; Infant, Newborn ; Infant, Premature, Diseases ; diagnosis ; physiopathology ; Male ; Respiratory Insufficiency ; diagnosis ; physiopathology ; Syndrome

Objective To analyze the expression of glial fibrillary acidic protein(GFAP) in hippocampal of rats with hypoxic-ischemic brain damage(HIBD) after injection of bone marrow stromal cells(BMSCs) supernatant into the lateral ventricle of the neonate rats,assess the ability of learning and memory,and explore the mechanism.Methods 7-day-old SD rats were randomly divided into sham operation group,model group,cells and supernatant group,with 20 rats in each group.The HIBD model was established via the ligation of left carotid arteries followed by 2-hour hypoxia.One week later,rats in control group were injected with 0.01 mol/L PBS 2 μl via the left ventricle.Meanwhile,the cell and the supernatant groups were injected with BMSCs and supernatant harvested from BMSC culture,respectively,via the same route.In the sham operation group,the left carotid arteries were separated but not ligated,and no hypoxia treatment was imposed on this group.They also received 0.01 mol/L PBS injection 2 μl per weak post surgery.8 weeks later,Morris water maze test was performed to assess the learning and memory,and the expression of GFAP in the dentate gyrus of rats was measured by immunohistochemistry.Results Morris water maze showed that the searching time of the probe trail(T1:(15.40±2.80) s) and reversal probe trail (T2:(16.45± 1.16) s) of the model group was shorter than that of the sham operation group (T1:(19.96±2.57) s,T2:(2:25.32±2.54)s,P＜0.05),while the searching time of the cell group(T1:(17.54± 1.80)s,T2:(18.99± 1.47) s) and supernatant group (T1:(17.40±2.37) s,T2:(17.96± 1.09) s) was prolonged compared with that of the model group (P＜0.05).No significant difference between the cell group and the supernatant group (P＞0.05).The integral optical density (IOD) value of GFAP positive cells was higher in the model group than that in the sham operation group(15.26±1.49 vs 12.82±2.56,P＜0.05),while the IOD of cell group(18.13±1.97) and that of the supernatant group(17.38± 1.64) were higher than that of the model group (P＜0.05).However,there was no significant difference between the cell group and the supernatant group (9＞0.05).Conclusion BMSC supernatant injected through lateral ventricle can improve the HIBD rats' abilities of learning and memory.The mechanism might be that MSCs secrete some cytokines to promote central nervous system repair.

To investigate the curative effect of minimally invasive sclera buckling on single retinal detachment.METHODS:Totally, 100 cases of patients with retinal detachment ( 106 eyes ) enrolled in our hospital were randomly divided into observation group and control group, 53 eyes in each group. Patients in observation group were treated with minimally invasive sclera buckling, while patients in control group received traditional limbal conjunctival incision. After surgery, patients were all followed up for 6 ~18mo, during which the retinal recurrence situation, degree of vision enhancement and compliance occurrence rate was recorded. RESULTS: The retinal reattachment rate once of observation group (96. 22%) was significantly higher than that of control group (88. 68%), there was statistically significance (P<0. 05). The vision enhancement rate of observation group (84. 90%) was significantly higher than that of control group (71. 70%), there was statistically significance (P<0. 05). The compliance occurrence rate of observation group (11. 32%) was significantly lower than that of control group (32. 08%), there was statistically significance (P<0. 05).CONCLUSlON: The improved minimally invasive sclera buckling can significantly enhance the curative effect for retinal detachment, decrease the compliance occurrence rate, improve vision function, and is a scientific, practical and rigorous tool for retinal detachment treatment.

Described in this paper are the contents and objectives of embedded information service for research on aviation medicine in light of information access, identification and analysis in persons engaged in research on aviation medicine.

Objectives To investigate the closing time of patent foramen ovale in newborns and infants in order to provide appropriate follow-up time points.Methods From September 1,2010 to April 30,2011,131 of l 202 full-term infants with patent foramen ovale were finished follow up at 3,6 and 12 months of age in Beijing Children's Hospital,Capital Medical University.If the foramen ovale was not closed at 12 months of age,the patients were followed up until two years of age.The closing time and the effects of complicated patent ductus arteriosus (PDA) were analyzed statistically using two independent t test,Chi-square and trend Chi square tests.Results Of the 131 full-term infants with patent foramen ovale,72 were males,and 59 were females.The foramen ovale size in neonatal period was not statistically different between males and females [(2.94 ±0.86) vs (2.95 ± 0.92) mm,t=0.641,P=0.964].The foramen ovale closing rate at 3 months was 21.4％ (28/131),67.9％ (89/131) at 6 months,and 95.4％ (125/131) at 12 months.The rate of foramen ovale closing decreased with larger foramen ovale at 3,6 and 12 months of age (x2trend were 42.930,101.050 and 63.260,all P＜0.05).Six patients with patent foramen ovale at 12 months of age were followed up until 2 years of age:two cases with foramen ovale ＜5.0 mm in the neonatal period were closed,one of two cases with foramen ovale ≥5.0 but ＜6.0 mm was closed,and one of two cases with foramen ovale ≥ 6.0 mm was closed.Of the 131 cases,121 were simple patent foramen ovale,and l0 were complicated with PDA.There were no significant difference in neonatal foramen ovale size between children with simple patent foramen ovale and those with PDA [(2.95 ±0.88) vs (2.82±0.83) mm,t=0.782,P=0.649].The closing rates in the simple patent foramen ovale group at 3,6,and 12 months of age were 21.5％ (26/121),57.9％ (55/95) and 87.5％ (35/40),respectively,and showed no significant difference from those with PDA (2/10,6/8 and 1/2,x2=0.012,0.946 and 1.536,all P＞0.05).In the simple patent foramen ovale group,the closing rate at 3 months was less than that at 6 months and 12 months 0x2 were 10.410 and 62.515,both P＜0.01).There was no difference in the closing rate in patients with PDA at 3,6 and 12 months (x2=5.748,P＞0.05).Conclusions Asymptomatic patent foramen ovale with a foramen ovale ＜5.0 mm may not require follow-up.But patients with a foramen ovale ≥ 5.0 mm,even asymptomatic,should be followed up using thoracic echocardiography at 2 years,and further follow-up is required if unclosed.

Objective To compare the effects of medroxyprogesterone acetate (MPA) and compound norethisterone enanthate (CNE) on the susceptibility of BABL/c mice to lower reproductive tract infection with chlamydia trachomatis (Ct). Methods A total of 60 BALB/c mice were randomly and equally divided into 6 groups:MPA-pretreated control group and CNE-pretreated control group inoculated with MyCoy cell suspensions in the vagina on the 5th day after single treatment with MPA and CNE respectively, blank control group receiving no treatment, MPA-pretreated infected group and CNE-pretreated infected group inoculated with 1 × 107 inclusion-forming units(IFU)of Ct serovar E in the vagina on the 5th day after single treatment with MPA and CNE respectively, control infected group inoculated with the same quantity of IFU of Ct serovar E in the vagina but receiving no pretreatment. On day 4, 7 and 14 after inoculation, vaginal irrigation fluid was obtained from all the mice for cell culture of Ct. Three mice were randomly selected from each of these groups at the above three time points and sacrificed, and vaginal and uterine tissue specimens were obtained for hematoxylin-eosin(HE)staining and microscopic examination. Chi-square test and Fisher's exact test were conducted to compare infection rate among different groups. Results No growth of Ct was observed in the three control groups at the above time points. The culture-positive rate of Ct was 1/10 on day 4 but 0 on day 7 and 14 in both the CNE-pretreated infected group and control infected group, 7/10 on day 4, 2/7 on day 7 but 0 on day 14 in the MPA-pretreated infected group. Fisher's exact test revealed that the culture-positive rate of Ct was significantly higher in the MPA-pretreated infected group than in the control infected group and CNE-pretreated infected group on day 4 (both P =0.03), but similar among the three infected groups on day 7 (P = 0.23). Both the MPA-pretreated control group and infected group showed an increase in endovaginal mucus, thinning of vaginal stratified squamous epithelium, mucification of vaginal epithelium, presence of secretions in vaginal lumen and submucosal infiltration of a few inflammatory cells on day 4, 7 and 14, as well as appearance of pathological changes (including the presence of large quantities of purulent secretions in lumen, mild tissue edema and submucosal infiltration of a few inflammatory cells) in the vagina on day 4. Vaginal tissues were normal in both the CNE-pretreated infected group and control group at the above three time points, but mild tissue edema, lumen expansion, secretion retention and infiltration of scattered inflammatory cells were observed in the uterus on day 4 after inoculation. Conclusions MPA can arrest the estrous cycle of mice at diestrus with the mucification of vaginal epithelium, which may increase the susceptibility to Ct vaginal infection in mice. In contrast, CNE has no obvious effect on the estrous cycle and susceptibility to Ct vaginal infection despite of the appearance of pathological changes in the uterus.

Objective The effect of lead exposure on children is consistently associated with intellectual and other neurologic deficits.However the exact mechanism by which Pb~(2+) exerts toxic effects on developmental central nervous system remains unknown.Our group has found by gene-chip test that the expression of metabotropic glutamate receptor subtype 5 (mGluR5) mRNA was changed by lead exposure.The present study aimed to examine the effects of different level of lead exposure on the expression of mCluR5 in gestation and lactation.Methods Sprague-Dawley rats were exposed to lead acetate during gestation and lactation.Three concentrations of 0.05%,0.2%,and 0.5% lead acetate were applied and considered as low,middle and high exposure group respectively.The Pb levels of blood and hippocampus of pups were analyzed at weaning to evaluate the actual lead content at the end of the exposure.The impact of lead exposure on the expression of mGluR5 mRNA and protein in hippocampal tissue of pups was investigated by quantitative real-time polymerase chain reaction (PCR) and Western blot.The potential role of the expression of mGluR5 mRNA and protein in lead neurotoxicity were discussed.Results The levels of lead in blood and hippocampus from lead-exposed rats were significantly higher than those in the controls and positively related to the degree of lead exposure.The results of real-time PCR and Western blot showed that exposure to lead acetate decreased the expression of mCluR5 mRNA and protein with a dose-dependent manner.Conclusions Hippocampal mGluR5 might be involved in lead-induced neurotoxicity.