Objective To investigate the measures to improve the newborn hearing screening quality.Methods835 cases of neonates using distortion product otoacoustic emissions for hearing screening,after first,second and third hearing screening,the final 5 cases failed,diagnosed by ABR screening hearing handicap in 3 cases.Experience constantly was summed up during screening process to improve screening quality.Results835 newborns were screened.The rate of failing to hearing screening was 0.60％,the rate of hearing impairment diagnosed by ABR was 0.36％,and the positive proportion of hearing screening was 0.24％.ConclusionOur experience during screening progress is to take some measures to improve the newborn hearing screening quality,with reducing false positives and avoiding false negatives,by choosing screening time,cleaning external ear and electric-otoscopy examination,environmental noise control,updating test procedures according to the physiology and development of the newborns,testing calibration instruments of otoacoustic emissions hearing screening,selecting suitable earplug,probe with correct plsce,and combining acoustic impedance examination,with a long term follow-up of listening in high risk neonates with passing screening.

Objective To observe the effects of positive end-expiratory pressure(PEEP) on oxygen utiliza-tion coefficient in patients with acute respiratory distress syndrome(ARDS). Methods 28 ARDS patients with me-chanical ventilation were studied. Catheter of central vein was laid. Increment levels of PEEP(0,5, 10, 15 and 20cmH2O) were applied sequentially. Hemodynamics and oxygen metabolism parameters were measured and calcula-tion of O2 UC [O2 UC = (SaO2 -SvO2.)/SaO2] were carried out respectively. O2 UC in 30 normal subject groups were carried out. Results Arterial oxygen tension(PaO2) increased significantly(P < 0.05) at PEEP 5cmH2O. Oxygen u-tilization coefficient (O2 UC), heart rate(HR) and mean blood pressure (MBP) were not significantly different (P >0.05) at PEEP 10cmH2O. At PEEP 15cmH2 O, O2UC and HR increased significantly (P < 0.05), but M BP reduced obviously(P < 0.05). Conclusions Too high PEEP can result in oxygen utilization coefficient of ARDS patient de-acend furthur, can not really correct oxygen difieiency condition in patients' organization cell. The optimal PEEP should be found, and blood capacity should be appropriately increased.

Objective To evaluate the localization of mitral valvular(MV)prolapse by transthoracic echocardiography(TTE),transesophageal echocardiography(TEE)and explore the interrelationship between the different subregions of MV prolapse and mitral regurgitation(MR).Methods Total of thirtythree patients with MV prolapse and more than moderate MR were included.TEE was used to further judge the location of scallop lesions and the result of both TTE and TEE were compared with the surgical findings respectively.The relationship between the different subregions of MV prolapse and MR was analyzed.Results Compared with the surgery findings,the accuracy rate of TTE and TEE in diagnosis of MV prolapse was 100％ qualitatively,80％ for TTE and 94％ for TEE in localizing the diseased region with the anterior and posterior MV,the result of TEE was significantly different from TTE(P＜0.05).MR level was related to the location of MV prolapse.Conclusions Compared with the TTE,TEE had more advantages in localizing the position of the MV prolapse.Mitral regurgitation is related to the location of MV prolapse.

Objective:To analyze the podocalyxin (PCX) expression in the kidney and the number of urinary podocytes in different pathological grades of Henoch-Sch(o)nlein purpura nephritis (HSPN),and to determine whether the number of urinary podocytes reflects the renal damage in HSPN.Methods:Fifty-six children diagnosed with HSPN in our hospital were enrolled in the study and classified into 4 groups by renal pathology:grade Ⅱ (Ⅱa+Ⅱb) (n=10),grade Ⅲ (Ⅲa+Ⅲb) (n=21),grade Ⅳ (n=16),and grade Ⅴ (n=9).Four kidney autopsy specimens without histomorphologic lesions and 8 urine samples from healthy children served as controls.With immunofluorescence assay,the PCX expression in 4 normal renal tissues and in the renal tissues of the 56 HSPN children was detected and quantitatively analyzed.Positive rate and the number of urinary podocytes were detected in the 8 healthy children and 56 HSPN children.Results:In the renal tissues of the normal control group and grade Ⅱ (Ⅱa+Ⅱb) HSPN group,the PCX expression was complete.The percentage of the PCX positive area out of the total glomerular area in the renal tissues of 2 groups had no significant difference (P＞0.05).In the renal tissues of grade Ⅲ (Ⅲa+Ⅲb),Ⅳ,and Ⅴ HSPN groups,the PCX expression showed various degrees of loss,decreasing in turn from grade Ⅱ (Ⅱa+Ⅱb),Ⅲ (Ⅲa+Ⅲb),Ⅳ to Ⅴ,with significant differences between each group (P＜0.01).For HSPN with grade Ⅲ (Ⅲa+Ⅲb) or higher,positive PCX expression was found in the urine,suggesting the presence of enough podocytes in the urine.The percentage of fluorescence positive area out of the total glomerular area of PCX in the renal tissues was negatively correlated with the total number of urinary podocytes (r=-0.637,P＜0.01).Conclusion:Podocyte injury plays a certain role in the pathological progression of HSPN.The urinary detection ofpodocytes can reflect the degrees of pathological damage in HSPN.

Objective:To observe the effect of hemp seed oil on the blood lipid and its hepatoprotective efficacy in hyperlipidemic rats. Methods:High fat diet was used to make the hyperlipidemia model in SD rats,and the rats were randomly divided into 6 groups:the normal control group,high fat model group,high dose group(1. 5 g·kg-1 ),medium dose group(1. 0 g·kg-1 ),low dose group (0. 5 g·kg-1 )and Xuezhikang group(0. 5 g·kg-1 ). After 35-day treatment,serum TC,TG,HDL-C,LDL-C,SOD,MDA,ALT, AST and liver SOD were detected. Results:Compared with the model group,hemp seed oil at different dosages could significantly de-crease the contents of serum TC,TG,ALT and the atherogenic index(AI)( P<0. 05 or P<0. 01),and significantly increase the SOD activity in serum and liver(P<0. 01). The contents of serum MDA and AST in the medium and high dose groups were signifi-cantly decreased(P<0. 01),and the content of LDL-C in serum and the content of MDA in liver in the high dose group were signifi-cantly reduced(P<0. 01). Conclusion:Hemp seed oil shows promising blood lipid reducing ability and liver protective effect in hy-perlipidemic rats,and the mechanism may be related with liver lipid metabolism improvement and antioxidant function enhancement.

Objective To investigate the effect of cogl410 on brain edema around lesion foci after traumatic brain edema (TBI) in mice and possible mechanism.Methods APOE-knockout TBI mice (n =130) were divided into cog1410 group and saline group according to the random number table,with 65 mice per group.Several time points (0,1,3,5,and 7 days) after TBI,13 mice were sacrificed in each group.TBI was induced with controlled cortex injury to the mice.A single injection of cog1410 solution or saline was administered via the caudal vein in 30 minutes after TBI.Levels of aquaporin-4 (AQP-4) around the lesion tissues were measured using the Western blot and q-PCR methods.Brain water content was determined by the dry-wet weight method.Results Brain water content in cog1410 group and saline group increased after TBI,reached the peak at day 3 [(81.184 ±0.009)％ vs (84.184 ± 0.014) ％] and normalized at day 7 [(76.018 ± 0.003) ％ vs (77.790 ± 0.012) ％] (P ＜ 0.05).There were almost no changes in AQP-4 mRNA expression in saline group after TBI.Whereas in cog1410 group,AQP-4 mRNA was greatly down-regulated at day 3 (0.278 ±0.014),increased greatly at days 5 and 7 after TBI (1.744 ± 0.014,1.782 ± 0.003) (P ＜ 0.05).Level of AQP-4 protein in saline group was increased at day 1 (0.491 ±0.060),reached the peak (0.605 ±0.099),and gradually returned to the preinjury level at days 5 and 7 (0.434 ± 0.042,0.358 ± 0.034).By contrast,level of AQP-4 protein in cog1410 group revealed no notable changes at day 1,slight increase at day 3,significant increase at day5 (1.079±0.090),and apeak at day7 (1.247±0.210) (P＜0.05).Conclusion cog1410 can significantly alleviate brain edema around the lesion foci of mice with TBI,as may be achieved by altering the mRNA and protein levels of AQP-4.

Objective To investigate the correlation between seminal plasma hepatitis B virus (HBV) DNA copy and semen parameters and sperm DNA fragmentation (SDF).Methods The seminal plasma HBV-DNA was detected by the real-time PCR in 148 infertility males,and those with serum HBV-DNA above (positive) or below (negative) 5.0 × 102U/ml were analyzed respectively by semen parameters,sperm morphology and sperm DNA fragmentation (SDF).Results Of 148 male,60 (40.5％) were seminal plasma HBV-DNA positive,and of 60 positive patients,56 (93.3％) were serum hepatitis B e antigen(HBeAg) positive,which was higher than those of seminal plasma HBV-DNA negative males (31cases,35.2％).Serum HBeAg and HBV-DNA in seminal plasma HBV-DNA positive patients were 845.7(0.2 ～ 1455.0) S/CO and (1.7 ± 1.1) × 108U/ml,which were higher than those of HBV-DNA negative patients [HBeAg:0.1 (0.1 ～ 1374.0) S/CO;HBV-DNA:(2.3 ± 1.1) × 107 U/ml,P ＜ 0.01].Seminal plasma HBV-DNA positive patients exhibited lower semen volume,sperm concentration,the percentage of forward moving sperm and less normal morphology compared to HBV-DNA negative patients [(2.44±1.2)mlvs.(3.07±1.3)ml,(66.8±49.1) ×106/mlvs.(87.1 ±65.4) ×106/ml,(54.3± 16.1)％ vs.(59.1 ±15.3)％,(3.77 ±2.8)％ vs.(6.15 ±4.2)％,P＜0.05].The number of patients with teratozoospermia was significantly higher in seminal plasma HBV-DNA positive patients (56.7％ versus 34.1％,(P ＜ 0.01).The SDF in seminal plasma HBV-DNA positive patients was(18.1 ± 12.3)％,while it was(14.4 ± 8.4)％ in negative patients,and the difference of SDF in these two groups was significantly (t =2.197,P ＜ 0.05).Conclusion Seminal plasma HBV-DNA positive could affect the semen parameters,sperm morphology and SDF.

Objective To study the efficacy of microvascular decompression in treating cranial nerve diseases. Methods 156 patients were treated with microvaseular decompression,of whom 119 were with trigeminal neuralgia,34 with hemifacial spasm and three with glossopharyngeal neuralgia.Rusults The overall effective rate was 96.8%(151/156) and the corresponding effective rate for the above three conditions were 94.2%,97.1% and 66.7%. Conlusions Mierovaseular decompression iS an effective treatment for cranial nerve diseases.

ObjectiveTo evaluate the nephroprotective effects of transplanting metanephric mesenchymal cells (MMCs) into the renal subcaspsule of rats with acute tubular necrosis (ATN) induced by gentamicin. MethodsMMCs were expanded in culture and immunocytochemistry was used to characterize the cells. After gentamicin-induced ATN, fluorescence-labeled cells were transplanted and traced in kidney tissues by fluorescence microscopy. Serum creatinine (Scr) and N-acetyl-b-D-glucosaminidase (NAG) were tested. Kidney pathology was studied by hematoxylin-eosin staining. Apoptosis was examined by the TUNEL assay. Ki-67 and Bcl-2 expression was examined by immunohistochemistry. ResultsMMCs were expanded in culture and the phenotype of the cells was vimentin-positive and keratin-negative. Compared with other ATN groups, in the MMCs-treated group, Scr and NAG clearly decreased[14d Scr: (101.38±20.46) μmol/L vs (248.78±23.15), (252.98±33.52), (229.08±18.18) μmol/L;NAG: (14.83±7.74) U/L vs (33.33±14.88), (29.62±10.54), (30.22±10.94) U/L, P<0.05, respectively];the histopathoiogic lesion scores were lower (P<0.05);the Ki-67 antibody and apoptosis of renal tubular epithelial cells were improved or reduced respectively;the expression of Bcl-2 protein was up-regulated (P<0.05). ConclusionThe subcapsular transplantation of MMCs can ameliorate renal function and repair kidney injury.

Objective The purpose of this study is to explore the clinical value of CT angiography( CTA) in the diagnosis of multiple intracranial aneurysms.Methods The data of CTA and DSA from 74 patients with multiple intracra-nial aneurysms from July 2011 to March 2015 were reviewed retrospectively.Results One hundred seventy-seven aneu-rysms were detected by DSA, and 175 aneurysms were detected by CTA.Among the aneurysms identified by CTA, 4 aneu-rysms were false positive and the correct detection rate of CTA was 96.6%.One hundred sixty-five aneurysms identified by CTA were confirmed by DSA and the correct diagnostic rate of CTA was 96.5%.CTA failed to detect 6 aneurysms and mis-diagnosed 10 aneurysms.Conclusions The correct detection rate and diagnostic rate of CT angiography ( CTA) in multiple intracranial aneurysms is relatively high.But previous surgery, spasm of the vessels, the size and number of aneurysms, radiologists'experience can influence the accuracy of ( CTA) in the diagnosis of multiple intracranial aneurysms, indicating that we should combine CTA with DSA to avoid the misdiagnosis and missed diagnosis.