Greenness, Genetic Predisposition, and Tinnitus.

This study aimed to investigate the association between residential greenness and tinnitus and the potential interaction between greenness and genetic predisposition to tinnitus. The normalized difference vegetation index (NDVI) is used to measure residential greenness. The tinnitus is defined based on self-reported. In the cross-sectional analyses, logistic regression models are used for the baseline sample of the United Kingdom Biobank cohort. In the secondary analysis, a Cox proportional hazard model is used for a subsample of participants who completed the tinnitus questionnaire at follow-up. In the cross-sectional analysis including 106471 participants, higher residential greenness is associated with lower odds of tinnitus for each interquartile range increase in continuous NDVI, with an adjusted odds ratio of 0.97 (95% confidence interval: 0.95 to 0.99) for tinnitus. A similar association is observed in the longitudinal analysis, with an adjusted hazard ratio of 0.92 (95% confidence interval: 0.86 to 0.98) for the association of NDVI increased per interquartile range with incident tinnitus. Moreover, there is a significant interaction between greenness and genetic predisposition to tinnitus (P < 0.05). This study suggested that residential greenness is negatively associated with tinnitus. Greenness and genetic predisposition to tinnitus are found to have a significant interaction.

Glucose Protects Cochlear Hair Cells Against Oxidative Stress and Attenuates Noise-Induced Hearing Loss in Mice / 神经科学通报·英文版

Oxidative stress is the key determinant in the pathogenesis of noise-induced hearing loss (NIHL). Given that cellular defense against oxidative stress is an energy-consuming process, the aim of the present study was to investigate whether increasing energy availability by glucose supplementation protects cochlear hair cells against oxidative stress and attenuates NIHL. Our results revealed that glucose supplementation reduced the noise-induced formation of reactive oxygen species (ROS) and consequently attenuated noise-induced loss of outer hair cells, inner hair cell synaptic ribbons, and NIHL in CBA/J mice. In cochlear explants, glucose supplementation increased the levels of ATP and NADPH, as well as attenuating H

Effects of two different anesthesia methods on temperature, perfusion index and coagulation function / 中国基层医药

Objective@#To observe the effects of general anesthesia and intravertebral anesthesia on the patients' temperature, perfusion index(PI) and coagulation function.@*Methods@#From January 2016 to December 2017, 60 patients in the First Hospital of Jiaxing undergoing elective line of great saphenous varicose veins surgery were selected.According to the random number table, the patients were divided into the general anesthesia group(group G, n=30) and intraspinal anesthesia group(group I, n=30). The general condition, operation time, the core temperature(tympanic membrane temperature) before anesthesia(T0), 10 min after anesthesia(T1), 20 min later(T2), 30 min later(T3), and the PI with no-infusion upper limb were recorded.The changes of coagulation function before anesthesia(T0) and after surgery(T4) were observed by extraction of the thrombus(TEG).@*Results@#The core body temperature of T1, T2 and T3 was significantly decreased in both two groups(FG=58.789, P=0.000, FI=2.965, P=0.035), and the hypothermia of group G was greater than that of group I(t1=-2.998, t2=-5.985, t3=-7.705; P<0.05). The PI of T1, T2 and T3 was significantly higher than T0 in both two groups(FG=5.439, P=0.002, FI=3.404 P=0.020), and the increase of group G was greater than that of group I(t1=2.065, t2=2.041, t3=2.649; P<0.05). In group G, TEG examination was significantly prolonged(F=5.482, P=0.023), and no significant changes were observed in group I.@*Conclusion@#The hypothermia of the patients and the increase of PI increased significantly, and the R time index of TEG is prolonged, and the anesthesia in the spinal canal has no obvious effect on the coagulation function.

Age-related Expression of SIRT1 in the Cochlea of C57BL/6 Mice / 听力学及言语疾病杂志

Objective To investigate the NAD+ - dependent protein deacetylase SIRT1 expression in the cochlea of C57BL/6 mice ,a mouse model of age - related hearing loss(AHL) .Methods A total of 46 C57BL/6 mice were used ,and were divided into 2 groups ;according the age ,there were young group (1 ~ 2 months old ,23 mice) and old group (12 ~ 16 months old ,23 mice) .ABR measurements were performed on young and old C57BL/6 mice . The expression of SIRT1 in the cochlea was detected by qRT - PCR and immunofluorescence .Results The ABR thresholds in the old mice(4 kHz :82 .7 ± 7 .32 dB SPL ,8 kHz :80 .9 ± 7 .8 dB SPL ,16 kHz :89 .3 ± 5 .5 dB SPL ,32 kHz :89 .9 ± 4 dB SPL) were significantly higher than those in the young C57BL/6 mice(4 kHz :52 .1 ± 8 .3 dB SPL ,8 kHz :40 .5 ± 6 .1 dB SPL ,16 kHz :50 .7 ± 9 .4 dB SPL ,32 kHz :57 .6 ± 11 .9 dB SPL)(P < 0 .001) .SIRT1 mRNA expression was significantly decreased in the cochlea of old C57BL/6 mice in comparison with young mice ( P <0 .01) .SIRT1 protein was abundantly expressed in the inner hair cells ,outer hair cells ,supporting cells ,strial marginal cells ,strial intermediated cells ,and spiral ganglion neurons .The positive area and the average flourescence intensity of SIRT1 protein were reduced in old C57BL/6 mice(P< 0 .001) .Conclusion The down - regulation of SIRT1 mRNA and protein expression in the older C57BL/6 mouse cochlea may be correlated with the pathogenesis of AHL .

Effect of ursodeoxycholic acid on biliary atresia after Kasai procedure: a systematic review and Meta-analysis / 中华实用儿科临床杂志

Objective To assess the effect of ursodeoxycholic acid on postoperative outcomes in biliary atresia (BA) patient undergoing Kasai procedure.Methods Correlative english articles published until Jun.2013 were searched by computer in Medline (PubMed),EMBASE,Cochrane library,Wanfang Database,China Knowledge Resource Integrated Database and China Biology Medicine Database,the output articles were screened according to inclusion and exclusion criteria.The selected articles were evaluated with the of Review Manager 5.2 software.Results Nine articles were obtained,but only 4 articles were included,including 284 patients with BA were conformed to the inclusion and exclusion criteria.The sensitivity analysis indicated that the total effective rate in ursodeoxycholic acid group was superior to that in the control group,and the difference between the 2 groups was notable significant (OR =7.24,95 ％ CI:2.42-21.68,Z =3.55,P =0.0004).There was no significant difference between ursodeoxycholic acid group and control group in the effect of ursodeoxycholic acid on outcome of patients who had BA(OR =5.50,95％ CI:0.96-31.64 ; Z =1.91,P =0.06).Conclusions Ursodeoxycholic acid has certain effect on alleviating jaundice after Kasai procedure,but it has no advantage on improving the long outcomes as comparison with control group.

Associations between attributes of live poultry trade and HPAI H5N1 outbreaks: a descriptive and network analysis study in northern Vietnam.

BACKGROUND: The structure of contact between individuals plays an important role in the incursion and spread of contagious diseases in both human and animal populations. In the case of avian influenza, the movement of live birds is a well known risk factor for the geographic dissemination of the virus among poultry flocks. Live bird markets (LBM's) contribute to the epidemiology of avian influenza due to their demographic characteristics and the presence of HPAI H5N1 virus lineages. The relationship between poultry producers and live poultry traders (LPT's) that operate in LBM's has not been adequately documented in HPAI H5N1-affected SE Asian countries. The aims of this study were to document and study the flow of live poultry in a poultry trade network in northern Vietnam, and explore its potential role in the risk for HPAI H5N1 during 2003 to 2006. RESULTS: Our results indicate that LPT's trading for less than a year and operating at retail markets are more likely to source poultry from flocks located in communes with a past history of HPAI H5N1 outbreaks during 2003 to 2006 than LPT's trading longer than a year and operating at wholesale markets. The results of the network analysis indicate that LPT's tend to link communes of similar infection status. CONCLUSIONS: Our study provides evidence which can be used for informing policies aimed at encouraging more biosecure practices of LPT's operating at authorised LBM's. The results suggest that LPT's play a role in HPAI H5N1 transmission and may contribute to perpetuating HPAI H5N1 virus circulation amongst certain groups of communes. The impact of current disease prevention and control interventions could be enhanced by disseminating information about outbreak risk and the implementation of a formal data recording scheme at LBM's for all incoming and outgoing LPT's.

Application of a narcotrend-assisted anesthesia in-depth monitor in the microwave coagulation for liver cancer during total intravenous anesthesia with propofol and fentanyl / 癌症

<p><b>BACKGROUND AND OBJECTIVE</b>CT-guided microwave coagulation is a minimally invasive surgery for patients with liver cancer. Total intravenous anesthesia with propofol and fentanyl is commonly used. The depth of anesthesia during microwave coagulation for liver cancer is still monitored by clinical signs. There are few subjective and effective indicators. This study explored the application of Narcotrend-assisted "depth of anesthesia" monitoring on microwave coagulation for patients with liver cancer during total intravenous anesthesia with propofol and fentanyl.</p><p><b>METHODS</b>Forty liver cancer patients underwent CT-guided microwave coagulation were randomly assigned to receive Narcotrend index monitoring or standard clinical monitoring for depth of anesthesia with 20 patients in each group. All patients received total intravenous anesthesia with propofol and fentanyl. The depth of anesthesia for patients in the Narcotrend group was measured according to a Narcotrend index, which was maintained between D2 and E0. The depth of anesthesia for those in the standard clinical practice group was measured according to heart rate, mean arterial pressure, and patient movement. Changes of hemodynamics, the duration of the emergence from anesthesia, and the recovery of orientation were recorded. The doses of propofol and fentanyl, postoperative visual analogue scores (VAS), and the incidence of postoperative nausea and vomiting were also recorded.</p><p><b>RESULTS</b>There was no significant alteration in heart rate or mean arterial pressure between the two groups. Compared with other anesthetic stages, both heart rate and mean arterial pressure decreased during the induction of the anesthesia in the two groups(P<0.05). The doses of propofol were higher in the standard clinical practice group than in the Narcotrend group [(460+/-30) mg vs. (380+/-35) mg, P<0.01]. The duration of emergence and orientation were longer in the standard clinical practice group than in the Narcotrend group [(9.5+/-2.9) min vs. (4.9+/-2.2) min, P<0.01; (12.2+/-3.5) min vs. (6.6+/-3.2) min, P<0.01, respectively]. There was no difference in the dosage of fentanyl, VAS, or the incidence of postoperative nausea or vomiting between the two groups (P>0.05).</p><p><b>CONCLUSION</b>For patients with liver cancer, monitoring the depth of anesthesia with Narcotrend on microwave coagulation can contribute to lower dosage of propofol and shorten duration of recovery during total intravenous anesthesia with propofol and fentanyl.</p>

PrP polymorphisms tightly control sheep prion replication in cultured cells.

Prion diseases are fatal neurodegenerative disorders of animals and humans that are characterized by the conversion of the host-encoded prion protein (PrP) to an abnormal isoform. In several species, including humans, polymorphisms in the gene encoding the PrP protein tightly control susceptibility of individuals toward this disease. In the present study we show that Rov cells expressing an ovine PrP allele ((VRQ)PrP) associated with high susceptibility of sheep to scrapie were very sensitive to sheep prion transmission and replicated the agent to high titers. In contrast, we did not find any evidence of infection when Rov cells expressed similar levels of a PrP variant ((ARR)PrP) linked to resistance. Our data provide the first direct evidence that natural PrP polymorphisms may affect prion susceptibility by controlling prion replication at the cell level. The study of how PrP polymorphisms influence the genetic control of prion propagation in cultured Rov cells may help elucidate basic mechanisms of prion replication.