It is important and imminent that bilingual teaching in anesthesiology is carried out and promoted in Chinese medical universities.This teaching has been implemented in Chongqing Medical University for ten years.The desired results have been achieved.This paper analyzes the importance of proper attitudes towards bilingual teaching,using the efficient methods,paying more attention to developing the students' ability of autonomous and improving the teachers' education quality.

Humans ; Paraquat ; poisoning ; Pulmonary Fibrosis ; chemically induced ; pathology

OBJECTIVETo investigate the effect of noise on the antioxidant capacity in different regions of brain tissue in guinea pigs.

METHODSThirty male white red-eye guinea pigs were equally and randomly divided into five groups: 1-, 3-, 7-, and 14-day groups after noise exposure and control group. The guinea pigs of the experimental groups were exposed to steady white noise with a sound pressure level at 100 dB for 8 h per day and for 2 consecutive days. The auditory brainstem response (ABR) of guinea pigs, as well as the glutathione (GSH) level, methane dicarboxylic aldehyde (MDA) level, and superoxide dismutase (SOD) activity in the cerebrum, cerebellum, and hippocampus, was determined prior to and 1, 3, 7, and 14 days after noise exposure.

RESULTSAfter noise exposure, the shifts in ABR threshold of the experimental groups were significantly higher than that of the control group (P<0.05). Compared with those in the control group, the SOD activity and GSH level both significantly decreased in the cerebrum tissue of each experimental group after noise exposure (P<0.05) and MDA content significantly increased in the 1-day group (P<0.05). As for cerebellum tissue, the SOD activity and GSH level in the 7-day group were significantly lower than those in the control group (P<0.05), but there was no difference in MDA level between each experimental group and the control group (P>0.05). In comparison with those in the control group, the GSH and MDA levels in the 1-day group after noise exposure were significantly higher, and the GSH and MDA levels in the 3-day group and the MDA level in the 7-day group after noise exposure were significantly lower (all P<0.05).

CONCLUSIONNoise exposure can lead to hearing loss and affect the antioxidant capacity of brain tissue, which indicates that the improvement in antioxidant levels may alleviate noise-induced damage.

Animals ; Antioxidants ; chemistry ; Brain ; metabolism ; Brain Chemistry ; Evoked Potentials, Auditory, Brain Stem ; Glutathione ; chemistry ; Guinea Pigs ; Male ; Malondialdehyde ; chemistry ; Noise ; adverse effects ; Superoxide Dismutase ; chemistry

OBJECTIVETo investigate the occupational health condition in a shipyard in Guangzhou, China, and to provide a basis for improving the working environment.

METHODSThe monitoring data on occupational harmful factors in the workplace and the data on health examination of the workers were analyzed, and the occupational health condition in the shipyard was evaluated with the related occupational health standards.

RESULTSExcept benzene, toluene, and electromagnetic radiation, the dust (2.02%), grinding wheel dust (3.85%), wood dust (2 out of 4 workers exceeded the standard), welding fume (16.85%), manganese dioxide (17.98%), dimethylbenzene (8.00%), and noise (53.20%) were all out of limits to different degrees. The health examination results of 2450 workers in the shipyard showed that the respiratory impairment of dust-exposed workers (3.19%) and the hearing impairment of noise-exposed workers (12.21%) were comparatively severe.

CONCLUSIONThe occupational health condition in this shipyard is not good. In order to protect the workers from health hazards, it is urgent and necessary to improve the working environment and strengthen the personal protective measures.

Air Pollutants ; Benzene ; China ; Construction Industry ; Dust ; Humans ; Noise ; Occupational Diseases ; Occupational Exposure ; Occupational Health ; Ships ; Surveys and Questionnaires ; Welding ; Workplace

OBJECTIVETo develop the knowledge, attitude and practice questionnaire on the prevention and control of occupational diseases for occupational groups, and to provide a convenient and effective tool for the survey of knowledge, attitude, and behavior on the prevention and control of occupational diseases in occupational groups and the evaluation of intervention effect.

METHODSThe initial questionnaire which was evaluated by the experts was used to carry out a pre-survey in Guangzhou, China. The survey results were statistically analyzed by t test, identification index method, correlation analysis, and Cronbach's a coefficient method. And then the questionnaire was further modified, and the content of the questionnaire was determined finally.

RESULTSAfter modification, there were 18 items on knowledge, 16 items on attitude, and 12 items on behavior in the "Knowledge, attitude and practice questionnaire on the prevention and control of occupational diseases for enterprise managers"; there were 19 items on knowledge, 10 items on attitude, and 11 items on behavior in the "Knowledge, attitude and practice questionnaire on the prevention and control of occupational diseases for workers".

CONCLUSIONThe knowledge, attitude and practice questionnaire on the prevention and control of occupational diseases for occupational groups is developed successfully, and it is a convenient and effective tool for the survey of knowledge, attitude, and behavior on the prevention and control of occupational diseases in occupational groups and the evaluation of intervention effect.

China ; Health Knowledge, Attitudes, Practice ; Humans ; Occupational Diseases ; prevention & control ; Surveys and Questionnaires

Aim To investigate the effect of ketamine plus fluoxetine on depressed behavior and the expres-sion of neuronal nitric oxide synthase (nNOS)and CA-PON in prefrontal lobe of mentally depressed rats at different time points,so as to study the possible mecha-nism of ketamine plus fluoxetine inducing antidepres-sant behavior.Methods Healthy adult male Sprague-Dawley rats,aged 2.5 ~3 months,weighing 220 ~270 g,were induced as the rodent model of depression by chronic unpredictable mild stress (CUMS).After the models of depression were established,96 of CUMS modeling successfully depressed rats were selected. Then they were randomly divided into four groups (n =24 each):the depressed group (group D,untreated group),ketamine group (group K,treated with intrap-eritoneal injection of ketamine 1 0 mg·kg -1 once a day for 3 days or 7 days),fluoxetine group (group F,trea-ted with gavage of fluoxetine 1 .8 mg·kg -1 once a day for 3 days or 7 days),or ketamine plus fluoxetine group (group KF,treated with intraperitoneal injection of ketamine 1 0 mg·kg -1 plus gavage of fluoxetine 1 .8 mg·kg -1 once a day for 3 days or 7 days).Open field test and sucrose preference test were performed 1 day before depression model was established,and 1 day before and after treatment.The rats were sacrificed 1 day after the last test for determination of the expres-sion of nNOS and CAPON protein (using immuno-his-tochemisity)and mRNA (by RT-PCR)in the prefron-tal lobe.Results After the models of depression were established,the total distance,rearing number and the sucrose preference percentage (SPP)were decreased significantly compared with those before (P <0.05). There was no significant difference among all groups in the total distance,rearing number and the SPP before treatment (P >0.05 ).Compared with groups D and F,the total distance was prolonged,the number of rea-ring and SPP were significantly increased,the expres-sion of nNOS protein and mRNA was down-regulated and the expression of CAPON protein and mRNA was up-regulated in groups K and KF,with 3 days’treat-ment (P <0.05).Compared with group D,the total distance was prolonged,the number of rearing and SPP were significantly increased,the expression of nNOS protein and mRNA was down-regulated and the expres-sion of CAPON protein and mRNA was up-regulated in groups K,F and KF with 7 days’treatment (P <0.05).Compared with group F,the total distance was prolonged,the number of rearing and SPP were signifi-cantly increased,the expression of nNOS protein and mRNA was down-regulated and the expression of CA-PON protein and mRNA was up-regulated in group KF with 7 days’treatment (P <0.05).Conclusion Co-administration of antidepressant fluoxetine with ket-amine may induce a more pronounced antidepressant activity than treatment with each antidepressant alone and it can shorten the time to improve the depressive state through promoting the expression of CAPON and inhibiting nNOS activity in the prefrontal lobe of men-tally depressed rats.

Objective To determine the risk factors for emergence agitation (EA) during the recovery period after general anesthesia.Methods One thousand and thirty-four patients of both sexes aged 18-89 yr undergoing general anesthesia were divided into EA group and non-EA group.EA occurring during recovery from general anesthesia was assessed by using Riker sedation-agitation scale.Age,sex,complication,education,medical history,ASA physical status,type and duration of anesthesia and operation,volume of blood loss,fluid replacement,urine volume,duration of stay in PACU,number of drainage tubes and so forth were recorded.Multivariate logistic regression was used to analyze the risk factors for the occurrence of EA.Results Thirty-six patients developed EA during recovery from anesthesia.The incidence of EA was 3.5 ％.Logistic regression indicated that high risk operation,premedication with diazepam,induction of anesthesia without midazolom and fluid replacement during operation were the risk factors for EA (P ＜ 0.05).Conclusion High-risk operation,premedication with diazepam,induction of anesthesia without midazolom and fluid replacement during operation are the risk factors for EA during recovery from general anesthesia.

Objective To investigate the effects of ketamine on neuronal nitric oxide synthase (nNOS) activity and carboxy-terminal PDZ ligand of nNOS (CAPON) expression in the prefrontal lobe of mentally depressed rats.Methods Adult male Sprague-Dawley rats,aged 2.5-3.0 months,weighing 210-260 g,were used in the study.Menial depression was induced by exposing the rats to chronic unpredictable mild stress.Twenty-four animals in which mental depression was successfully induced were randomly divided into 2 groups (n =12 each):mental depression group (group D) and ketamine group (group K).Another 12 rats were chosen and served as control group (group C).Group K received intraperitoneal ketamine 10 mg/kg once a day for 7 consecutive days,while groups C and D received intraperitoneal normal saline 10 ml/kg instead of ketamine.Sucrose preference test and open field test were performed before administration and at 1 day after the end of administration.The total distance,number of rearing and sucrose preference percentage (SPP) were recorded.The rats were sacrificed 1 day after the last test for determination of the expression of nNOS and CAPON protein (using immuno-histochemistry)and mRNA (by RT-PCR) in the prefrontal lobe.Results Compared with group C,the total distance was shortened,the number of rearing and SPP were significantly decreased,the expression of nNOS protein and mRNA was up-regulated and the expression of CAPON protein and mRNA was down-regulated in groups D and K (P ＜ 0.05).Compared with group D,the total distance was prolonged,the number of rearing and SPP were significantly increased,the expression of nNOS and mRNA was down-regulated and the expression of CAPON protein and mRNA was up-regulated in group K (P ＜ 0.05).Conclusion Ketamine can improve the depressive state through promoting the expression of CAPON and inhibiting nNOS activity in the prefrontal lobe of mentally depressed rats.

Objective: To investigate the role and mechanism of action of green tea polyphenols in noise-induced hearing loss. Methods: Male specific pathogen-free guinea pigs were randomly divided into normal control group with 9 guinea pigs, noise exposure group with 36 guinea pigs, and green tea polyphenol intervention group with 36 guinea pigs. Auditory brainstem response (ABR) threshold shift was examined before noise exposure and at 1, 3, 7, and 14 days of noise exposure. The surface preparation of cochlear basilar membrane was used for hair cell count and the morphology of hair cells was also observed. Western blot was used to observe the expression of cysteinyl aspartate-specific protease-9 (caspase-9) and cysteinyl aspartate-specific protease-3 (caspase-3) in cochlear tissue. Results: Both the noise exposure group and the green tea polyphenol intervention group had an increase in ABR threshold after noise exposure, and the green tea polyphenol intervention group had a significantly lower ABR threshold shift than the noise exposure group at all time points (P<0.05). Both groups had enlargement, atrophy, or loss of hair cells after noise exposure, and at 7 and 14 days of noise exposure, the noise exposure group had a significantly higher rate of abnormal hair cells than the green tea polyphenol intervention group (P<0.05). Both groups had an increase in the expression of caspase-9 and caspase-3 after noise exposure, and the noise exposure group had a significantly greater increase than the green tea polyphenol intervention group (P<0.05). Conclusion Green tea polyphenols can reduce noise-induced hearing loss and hair cell injury, possibly by regulating the expression of caspase-9 and caspase-3.

Animals ; Connective Tissue Growth Factor ; metabolism ; Fibrosis ; Herbicides ; poisoning ; Lentivirus ; Lung ; pathology ; Paraquat ; poisoning ; Poisoning ; pathology ; Pulmonary Fibrosis ; pathology ; RNA Interference ; RNA, Small Interfering ; Rats