摘要
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
摘要
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.
摘要
Objective To observe the effect of propofol and etomidate for anesthesia induction on hemodynamics and adverse reactions during the perioperative period. Methods One hundred patients undergoing elective abdominal surgery were randomly divided into the propofol group (Group P) and etomidate group(Group E). For anesthesia induc-tion, successively injected midazolam-propofol-fentanyl-rocuronium in Group P, and the propofol was replaced by eto-midate in Group P. The circulation,stress and the adverse reactions before induction(T0), before intubation(T1), 3 min after intubation (T2), two groups were recorded. Results Compared with the P group, the T1 SBP, HR, T2 SBP, DBP, and HR were higer in E group; The incidence of injection pain was higher in Group P , but the incidence of muscle tremors was lower in Group P(P<0.05). Conclusion The etomidate is more suitable for the patients with hemodynamic instability. Both etomidate and propofol has no effect on blood sugar.
摘要
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 .
摘要
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.
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<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>