Objective To assess the relationship between single nucleotide polymorphisms of FcεRIαgene and atopic dermatitis. Methods Genomic DNA samples were extracted from peripheral blood of 97 patients with atopic dermatitis and 283 normal human controls. The polymorphism at the distal promoter region of FcεRIα gene was determined by PCR-ligase detection reaction assay followed by gene sequencing. Results A G/T polymorphism was observed at position rs61828219 in the promoter region of FcεRIα gene, while all the tested individuals were homozygous for T/T at position rs12135235 and A/A at position rs36233780 in the promoter region of FcεRIα gene. The mutation frequency at position rs61828219 was 1.04% and 2.17% in patients with AD and normal human controls, respectively (both P ＞ 0.05). Conclusions In the Chinese Han population, there is a G/T polymorphism at position rs61828219 in FcεRIα gene promoter region, which is unlikely related to the development of AD; however, no polymorphism is detected at position rs12135235 or rs36233780.

Background The afferent signals of proprioceptor in extraocular muscles play an important role in controlling eye position and conjugate movement. Palisade ending in the extraocular muscles is the main source of proprioceptive information, and its abnormalities in structure and function may be associated with the occurrence of nystagmus. Objective This study was to observe the changes of palisade ending in the extraocular muscles of patients with congenital nystagmus ( CN) and discuss the probable mechanism. Methods Modified Kestenbaum procedure was performed on 10 patients with CN, and the extraocular muscle samples were collected during the operation. Normal extraocular muscle samples were obtained from the enucleated eyeballs after ocular wound. The ultrathin sections of extraocular muscles were prepared and double-staining by uranyl acetate and lead citrate. The morphological changes of the palisade ending of extraocular muscles were examined under the transmission electron microscopy. Written informed consent was obtained from each subject before surgery. Results The ultrastructure of palisade ending in the extraocular muscle of CN subjects showed the different degrees of alterations. The mild changes included the collapse and disconnection of external capsules and the nonhomogeneous electron-dense substracts. The degeneration and dissociation of myelin in nerve endings, swelling and vacuolation of mitochondria were also exhibited. Myeloid body was found in axon. In the severe patients,the necrosis of Schwann' s cells,dissolve of axon and disappear of capsules were seen. Conclusion The palisade ending of extraocular muscle in the patients with CN are obviously abnormal in comparison with normal one. These alterations are probably associated with the etiology and pathogenesis of CN.

ObjectiveTo investigate the effects of curcumin on type 2 diabetic neuropathic pain (DNP)and expression of inositol-requiring enzyme 1α (IRE1α) in spinal dorsal horn and dorsal root ganglia (DRG) in rats.MethodsType 2 diabetes mellitus was induced by high-fat and high-sucrose diet and intraperitoneal streptozotocin (STZ) 35 mg/kg,and confirmed by fasting blood glucose level ＞ 16.7 mmol/L in male SD rats.Type 2 DNP was confirmed by the mechanical withdrawal threshold (MWT) and thermal withdrawal latency (TWI.) measured on day 14 after STZ administration ＜ 80％ of the baseline value.The rats were then randomly divided into 3 groups ( n =27 each):DNP group,curcumin group (group Cur) and solvent control group (group SC).Curcumin and corn oil 100 mg/kg (25 mg/ml) were given intraperitoneally once a day for 14 consecutive days starting from 14 days after administration of streptozocin in Cur and SC groups respectively.Another 27 rats were chosen and served as control group (group C) and fed with common fodders.MWT and TWL were measured at 3,7 and 14 day after curcumin administration.The expression of IRE1α in spinal dorsal horn and DRG was detected by Western blot.ResultsCompared with group C,MWT was significantly decreased and TWL was significantly shortened,and the expression of IRE1α was up-regulated in DNP,Cur,and SC groups (P ＜ 0,05),Compared with group DNP,MWT were significantly increased,TWL was significantly prolonged,and the expression of IRE1α in spinal dorsal horn and DRG was down-regulated in group Cur (P ＜ 0.05).There was no significantdifference in the parameters mentioned above between DNP and SC groups (P ＞ 0.05).ConclusionCurcumin can attenuate type 2 1)NP and inhibition of the expression of IRE1α in spinal dorsal horn and DRG is involved in the mechanism.

Objective To investigate the effect of curcumin on the apoptosis in spinal cord and dorsal root ganglion neurons in a rat model of diabetic neuropathic pain (DNP) . Methods One hundred and eight male SD rats weighing 200-230 g were randomly divided into 4 groups ( n = 27 each): control group (group C), DNP group, solvent control group (group SC) and curcumin group (group Cur) . Diabetes was induced with intraperitoneal streptozocin 70 mg/kg. Successful induction of diabetes was defined as blood glucose ＞ 16.7 mmol/L. Curcumin and com oil 100 mg/kg (23 mg/ml) were given intraperitoneally once a day for 14 consecutive days starting from 14 days after administration of streptozocin in Cur and SC groups respectively. Mechanical paw withdrawal threshold (MWT) and thermal paw withdrawal latency (TWL) were measured 2 d before and 14 d after streptozocin injection and 3, 7 and 14 d after curcumin injection. The pain threshold measured at 14 d after administration of streptozocin decreased by more than 15% of the baseline in all the rats. The expression of caspase-3 and Bcl-2 in spinal cord and dorsal root ganglion was determined at 3, 7 and 14 d after curcumin injection by immuno-histochemistry and Western blot, and the neuronal apoptosis rate was determined by TUNEL. Results Compared with group C, MWT and Bcl-2 expression were significantly decreased, TWL was significantly shortened, the neurona lapoptosis rate and caspase-3 expression were significantly increased in DNP, SC and Cur groups ( P ＜ 0.05).Compared with group DNP, MWT and Bcl-2 expression were significantly increased, TWL was significantly prolonged, the neuronal apoptosis rate and caspase-3 expression were significantly decreased in Cur group ( P ＜0.05) . There was no significant difference in the parameters mentioned above between DNP and SC groups ( P ＞0.05). Conclusion Curcumin can attenuate DNP by inhibiting the apoptosis in spinal dorsal hom and dorsal root ganglion neurons in rats, and the inhibition of caspase-3 expression and increase in Bcl-2 expression are involved in the mechanism.

Objective To evaluate the changes of the upper airway of the patients with obstructive sleep apnea syndrome (OSAS) before and after operations and to know the effects of operations by MSCT. Methods The upper airway dimensions of 26 patients with OSAS were measured on multiplanar reformatted (MPR), curved-planar reformatted (CPR), volume rendering(VR) images of 16-slice spiral CT. The measurements include the anteroposterior calibres and the areas on the reformatted axial images on the pharyngeal cavity levels, the calibres and the minimum areas in retropalatal and retroglossal regions, the areas of the soft palate and uvula on the reformatted sagittal view with maximum thickness, the maximum wall thickness of the right and left the upper airway on the coronary images, the volume of the upper airway before and after the operations. The measurements were correlated with the polysomnography (PSG) records. The data were analyzed paired-samples t-test and Pearson correlations. Results By comparison, the anteroposterior calibres and the cross-sectional areas on the reformatted axial view of the lower retropalatal region (slice 4) of the upper airway increased significantly after operations. The anteroposterior diameter increased from 5. 9 mm before operations to 12.8 mm after operations, where t = - 5.506, P < 0.05. The areas increased from 51.0 mm~2 before operations to 275.0 mm~2 after operations, where t = -5.011, P <0.05. In the higher retropalatal region (shce 2) of the upper airway, the anteroposterior diameter decresased from 14.8 mm before operations to 9.2 mm after operations, where t = 2.867, P < 0.05. The areas decreased from 241.0 mm~2 before operations to 128.0 mm~2 after operations, where t = 3.087, P < 0.05. The anteroposterior calibres of retroglossal region (slice 7) decreased from 12.7 mm before operations to 10.3 mm after operations,where t = 3.718, P <0.05. The L-R calibres and the minimum areas of of retropalatal increased significantly from 6.4 mm, 33.0 mm~2 before operation to 10.9 mm, 76. 0 mm~2 after operation, where t = -3.413, -2. 216, respectively and P < 0.05. Of the 9 cases whose apnea and hypopnea index (AHI) ≤5 events/hour after operations, the minimum areas of retropalatal region, the anterio-posterior diameter, L-R calibres increased significantly. The areas increased from 41.0 mm2 before operations to 76.0 mm~2 after operations, were t = -4. 932, P <0.05. The anteroposterior calibres increased from 4.6 mm before operations to 6.6 mm after operations, where t = - 7. 308, P < 0.05. The L-R calibres increased from 8.3 mm before operations to 13.6 mm after operations, where t = - 4.320, P < 0.05. Conclusions MPR、CPR、VR of MSCT can evaluate the not only the morphology but the function changes of the upper airways on the OSAS patients. The increasing of the minimum cross-sectional area may be one of the important indications for evaluating operations. The narrowing of the higher retropalatal region of the upper airway after operations should be an alert to the clinicians.

Objective To compare the scores of amplitude-integrated electroencephalogram (aEEG) tracings between preterm infants who were smaller for gestational age (SGA) and those who were appropriate for gestation (AGA).Methods A total of 139 preterm infants were collected in the Neonatal Intensive Care Unit of the Affiliated Hospital of Guangdong Medical College during the period of Mar.2013 to Feb.2014.One hundred and fourteen patients met the inclusion criteria with gestational ages from 32 to 36 weeks at birth,including 54 SGA infants and 60 AGA infants.The aEEG recordings were obtained within 72 h after birth by using the NicoletOne monitor.Duration of each recording was at least 3 h.Five aspects of each tracing,such as continuity (Co),sleep-wake cycling (Cy),amplitude of the lower border (LB),bandwidth (B) and total maturation scores,were evaluated and compared between 2 groups by applying a aEEG scoring system.Results 1.As SGA infants,scores for Co,Cy,LB,B as well as total maturation scores were progressively increased with gestational age advancing(all P ＜ 0.05).As AGA infants,scores for Cy,B and total maturation scores progressively increased with advancing gestational age (all P ＜ 0.05),but there were no statistical differences between each gestational ages in Co,LB scores (all P ＞ 0.05).2.Linear regression analysis of SGA infants' gestational age to Co,Cy,LB,B and total maturation scores showed positively correlation,and the correlation coefficients were 0.438,0.597,0.385,0.606 and 0.608,respectively (all P ＜ 0.05).As AGA infants,a positive correlation between gestational age and Cy,B as well as total maturation scores were observed,and the correlation coefficients were 0.528,0.615 and 0.635,respectively (all P ＜ 0.05).3.At the same gestational age,both the B scores and total maturation scores in SGA group were lower than those in AGA group.Conclusions SGA and AGA,Co,Cy and total maturation scores can be used to evaluate the maturation of cerebral function.At the same gestational age,the scores of B and total maturation scores are lower in the SGA,and this might be associated with their delayed neuromotor development.

Objective To observe the effects of Salvia injection on the brain pathology,expression of synaptophysin and the synaptic ultrastructure at different time points in neonatal rats after hypoxic-ischemic brain damage (HIBD).Methods One hundred and fifteen healthy newborn SD rats of 7-day-old were randomly divided into normal group,sham group,Salvia high dose group,Salvia low dose group,and the HIBD model group.The HIBD model was prepared by ligation of the left carotid artery combined with hypoxic environment.The rats(in normal group,sham and HIBD model groups) were injected with sterile saline[9.0 mL/(kg · d)],while the rats in high and low dose groups were injected with Salvia injection [9.0 mL/(kg · d) and 4.5 mL/(kg · d) respectively].The intraperitoneal injec tion lasted for 7 and 14 days.The rats' brains were collected at one day,7 days and 14 days after the modeling respec tively.The specimens of brain tissue were observed through hematoxylin-eosin (HE),the expression of synaptophysin (SYP) was determined by using immunohistochemistry method,and the synaptic ultrastructure in the frontal cortex was observed through transmission electron microscope.Results Finally,106 newborn rats were included in statistics analysial.(1)General observation:after HIBD modeling,the neonatal rats were mostly in the left-lateral position,with difficulties in turning over,balance abnormalities,limb shaking and other abnormal behaviors,and the delay of eyes open with the left upper eyelid ptosis.(2) Pathology:the disordered and deep stained nerve cells,the degenerated and necrotic neurons were observed in the brain tissues of the HIBD model group.(3) Expression of synaptophysin:mean density of SYP in the HIBD model group was significantly lower than the normal group on day 1,day 7,and day 14 (P ＜0.05);the SYP expression in the Salvia intervention groups increased compared with the HIBD model group(P ＜ 0.05).(4) Synaptic ultrastructure:the incomplete structure of the frontal cortex neurons,the swelling organelle and the synaptic structure damage were observed in the HIBD rats.Compared with the HIBD model group,the neuronic and synaptic ultrastructure were improved by the intervention treatment of high and low dose Salvia injection.Conclusions The mechanism of Salvia injection in treatment of neonatal rats with HIBD may be associated with the improvement in neuronal ultrastructure and synaptic reorganization.

Objective To explore the association between folic acid supplementation during periconcerptional period and congenital heart disease in newborns to provide scientific evidence for making intervening measures.Methods Using stratified random cluster sampling,a total of 30 counties were sampled from Shaanxi Province.A questionnaire survey was conducted among childbearing-aged women pregnant between January 2010 and November 2013.All of the included women had definite pregnancy outcomes and had signed the consent form.Logistic regression was performed to investigate the association between folic acid supplementation during pregnancy and congenital heart disease in newborns.Results In total,28 354 questionnaires were available for analysis.The overall prevalence of congenital heart disease among live-birth neonates in the present study was 7.3‰.The percentage of childbearing-age women who had taken folic acid supplementation during pregnancy was 64.4％,while only 17.2％ of them took folic acid according to the specification.Taking folic acid regularly during pregnancy was associated with a lower risk of congenital heart disease among the newborns (OR 0.502,95％ CI:0.279 0.902).The multiple-factor analysis results also showed that taking folic acid regularly during periconcerptional period could reduce the risk of congenital heart disease (adjusted OR=0.512,P=0.046) when we controlled the family background factors,mother factors and exposure risk factors during pregnancy.However,no association was found between irregularly taking folic acid during periconcerptional period and the risk of congenital heart disease.Conclusion Taking folic acid according to the specification during periconcerptional period (taking folic acid during 3 months before pregnancy to 3 months after pregnancy with a daily dose of 0.4mg for more than 90 days) may prevent congenital heart disease of newborns.

Objective To analyze the effect of special risk exposures during periconception period on birth defects of newborns.Methods From Jul.to Dec.2013,the multi-stage stratified random sampling method was adopted.Women of childbearing age between 15 and 49 who were pregnant during 2010 to 2013 in Shaanxi Province were selected as study subjects for investigation on special risk factors exposed during periconception period.The Logistic regression model was adopted to analyze the association between newborns' birth defects and special risk exposures.Results The study included 30 010 women of childbearing age and 29 550 newborns with 572 (193.57/ 10 000) cases of birth defects.After adjusting for demographic factors,the risk factors for birth defects were drinking [OR=2.29,95％ CI (1.22,4.29)] and passive smoking [OR=1.25,95％ CI (1.02,1.53)] during periconception.There was a higher risk of birth defects when exposure to medicine [OR =1.64,95％ CI (1.04,2.61)],pesticides [OR =2.41,95％ CI (1.09,5.35)],biological risk factors [OR-1.64,95％ CI (1.05,2.56)],physical risk factors [OR=1.15,95％ CI (1.13,2.34)] and chemical risk factors [OR =2.36,95％ CI (1.36,4.11)] 3 months both before and after pregnancy.Similarly,after adjusting for demographic factors and behaviors,we found that birth defects were related to antibiotics,salicylates,and antitussive,which could increase the risk of birth defects (P＜0.05).Conclusion Exposure to passive smoking and drinking during periconception and exposure to medicines and pesticides,as well as biological,physical and chemical risk factors 3 months before and after pregnancy could increase the risk of birth defects in newborns.

The general characteristics, outcomes and risk factors of the patients with aortic dissection (AD) were evaluated in a single medical center. From January 2002 to December 2008, 284 patients with AD were treated and followed-up at our institution, including 105 cases of type A AD and 179 cases of type B AD. The patients in each type were divided into three groups according to management: medical treatment group (A or B), open surgery group (A or B), and stent-graft group (A or B). The characteristics and follow-up outcomes were compared between the groups or subgroups. The results showed that there was significant difference in the prognosis for type A AD between medical treatment group and open surgery group, but there was no significant difference in the prognosis for type B AD between medical treatment group and stent-graft group. Independent risk factors of follow-up mortality for patients with type A AD included a history of atherosclerosis (HR, 3.807; 95% confidence interval [CI], 1.489 to 7.611; P=0.003), in-hospital hypotension/shock (HR, 4.687; 95% CI, 1.846 to 11.900; P=0.001), in-hospital myocardial ischemia or infarction (HR, 3.734; 95% CI, 1.613 to 8.643; P=0.002), pleural effusion (HR, 2.210; 95% CI, 1.080 to 4.521; P=0.030), branch vessel involvement (HR, 2.747; 95% CI, 1.202 to 6.278; P=0.016) and surgical treatment (HR, 0.177; 95% CI, 0.063 to 0.502; P=0.001). And there were insignificant independent predictors for mortality of the patients with type B AD. It was concluded that there were significant differences in characteristics and one year mortality between type A AD and type B AD, but after one year, there was no significant difference in the mortality and complications of them. There were several discordant risk factors of AD, such as female gender, age, thrombus, abrupt onset of pain that were considered as the risk factors in some papers. And there was no definite risk factor of mortality in this study in the patients with type B AD.