Objective To detect different activated patterns of heavy smokers in different states as well as between smokers and non-smokers. Methods Seventeen subjects including 12 heavy smokers and 5 non-smokers (controls) were examined with functional magnetic resonance imaging (fMRI) performing smoking-related olfactory cue tasks. The data were processed with SPM2. These different patterns were compared between the two groups. Results When smokers were exposed to the smoking olfactory cue in the abstinent state, activation was found on the left superior frontal gyrus (BA8, 9, 10, 11), left middle frontal gyrus (BA8, 10, 11, 46), left inferior frontal gyrus (BA9), left medial frontal gyrus (BA6, 8, 10,11), right superior frontal gyrus (BA10), right middle frontal gyrus (BA8, 9), right inferior frontal gyrus (BA45, 47), right medial frontal gyrus (BA9, 11), left callosal gyrus (BA24, 31), right callosal gyrus (BA24, 37), right middle temporal gyrus (BA21) and both sides of the thalamus and cerebellum. When smokers were exposed to the smoking olfactory cue in the satiated state, activation could be found on both sides of the prefrontal lobe and cerebellar hemisphere, while there was no activation on the other brain regions. No activation was found on the whole brain of the nonsmokers,except for a little small volume active points appeared in individual subjects, possibly caused by the picture noise. Conclusion The Limbic system (cingulate cortex, thalamus) and the prefrontal lobe play an important role in the cue-induced smoking craving approved from the new perspective of the olfactory. It is feasible to research smoking addicts' brain activation and the role of neural mechanisms using olfactory stimulation with clinical 1.5T MRI equipment.

Objective To investigate use of sedative and hypnotics agents in urban community residents aged 60 years and over in Shanghai. Methods A cross-sectional study on use of sedative and hypnotics agents was conducted in 2248 residents aged 60 years and over in Jing' an community of Shanghai during July to October 2005 with questionnaire. Results Overall prevalence of use of sedative and hypnotics agents was 15.8% (355/2248), 7.3% (165/2248) for consecutive use and 6.2% (140/2248) for long-term consecutive use, respectively, which increased with age (P < 0.05). Prevalence of use of sedative and hypnotics agents, whatever consecutive use or long-term consecutive use was significantly higher in women than that in men [18.7 % (224/1303) vs. 11.7% (111/945), P<0.01; 8.3 % (108/1303) vs. 6.0% (57/945), P < 0.05 ; or 7. 3% (95/1303) vs. 4. 8% (45/945), P < 0.05]. Use of benzodiazepinos accounted for 90. 0 % (126/140) in those with long-term consecutive use. About 93.8 % (333/355) of sedative and hypnotic agents were prescribed by medical doctors. Conclusiong In general, prevalence of sedative and hypnotics agents use in the aged residents of community is higher, mainly with benzodiazepines. There are a few problems about their unreasonable use in women and attention should be paid to it.

Objective To evaluate the deep brain venous blood oxygen content changes in patients with multiple sclerosis(MS) using susceptibility weighted imaging (SWI), and to explore the ability of SWI in reflecting the clinical condition. Methods Forty-four MS patients were prospectively enrolled in the study. All the clinical-proved patients meeting the McDonald standards (2005 revised) underwent conventional MRI, SWI, and 12 cases of them underwent MRI review from 12 to 16 months interval. all the patients' clinical condition were quantified according to the expanded disability status scale(EDSS). The score was 0.5—6.5. Sixty-five age- and gender- matched healthy volunteers underwent conventional MRI and SWI. The blood oxygen content of the deep brain venous were estimated by the veins phase value, and differential phase values of blood vessels and surrounding tissues (Δφ) were processed with SPIN software. The blood vessels consist of bilateral BV, SMCV, ICV, STV and FMV, PMV, OMV. The difference of Δφvalue in different veins between MS patients and the controls was compared using independent sample t-test, and the Δφ value comparison of MS patients in different time were performed by using paired t test; The correlation ofΔφvalue between MS and EDSS was analyzed using Spearman correlation. Results TheΔφvalue of BV, SMCV, ICV, STV were 856.6 ± 246.4, 600.6 ± 155.2, 965.9 ± 205.4, 844.2 ± 149.7 in MS, and 767.6±145.1, 536.2±123.5, 892.8±156.3, 783.1±148.5 in controls, respectively. TheΔφvalue was higher in MS patients than the controls (t=2.157, 2.303, 2.005, 2.103,P<0.05). The twelve patients'Δφvalues of BV, ICV,STV were 729.4±275.1, 906.1±219.2, 737.2±159.1 in the first time, and 923.2±211.6, 1017.3±211.1, 919.3 ± 165.9 in the second time, and all the values increased in the review of the interval of 12 to 16 months (t=-3.092,-6.420,-3.972,P<0.05). The phase value of PMV and OMV had significant positive correlation with EDSS scores(r=0.638, 0.642,P<0.01). Conclusions The state of hypoxia of the brain parenchyma appears in MS patients, and hypoxia may become worse with the extension of course. The extent of hypoxia can reflect the disability of the patients.

OBJECTIVETo analyze asbestos exposure level between 1984 and 2010 in a district of malignant mesothelioma with clustering incidence in Zhejiang Province, in order to improve the recognizing and early diagnosis of malignant mesothelioma, protect the health of workers.

METHODSMonitoring data of total asbestos dust concentration in the air of workplace from 1984 to 2010 in asbestos textile enterprises, family hand spinning operation, brake production, and asbestos board production in Zhejiang Province were collected in the local CDC. A total of 766 TWA copies of mass concentration were collected, and 1233 copies of MAC data. Asbestos mass concentration and fibre counting concentration of 29 points of family hand spinning operation were parallel determinated in the same time and the same sampling point. Raw asesbtos materials and dust composition of local asbestos processing corporations were collected and analyzed using X-ray diffraction method.

RESULTSRaw materials of asbestos used between 1984 and 2010 in this area were chrysotile from Sichuan, Qinghai, Xinjiang, Russia, Zimbabwe, and some were mixed with SiO2, CaCO3 and other impurities. Raw materials used in asbestos board production were blue asbestos. Dust concentration between 1960s and 1980s in asbestos processing plants far exceeded the national standard. After then the dust concentration decreased significantly, but still higher than the national standard. 95.2% of air dust concentrations in the workplaces of asbestos factories exceeded the standard, and dust concentrations of workplaces of raw material, spinning, weaving, carding and labor insurance were above 90% in which carding work had the highest median concentration. 37.9% of dust mass concentrations in hand spinning work exceeded the standard where textile machinery side had the highest value. Beating job in asbestos board manufacturing and grinding job in brake production had higher concentrations.

CONCLUSIONSMost of production technologies in asbestos processing industry exceed the standard level, indicating that the workers were at risk for malignant mesothelioma and other asbestos related diseases, which should draw high attention.

Asbestos ; analysis ; Asbestos, Crocidolite ; analysis ; Asbestos, Serpentine ; analysis ; China ; epidemiology ; Dust ; analysis ; Humans ; Lung Neoplasms ; epidemiology ; Mesothelioma ; epidemiology ; Occupational Diseases ; epidemiology ; Silicon Dioxide ; analysis ; Workplace

Objective To investigate the curative effect of ultra early enteral nutrition (EN) supplemented with probiotics in patients with severe acute pancreatitis (SAP).Methods Seventy-five SAP cases admitted in Second People's Hospital of Nantong from December 2014 to June 2018 were enrolled and assigned into 24 h group (who received EN & probiotics at 24 h,n =25),72 h group (who received EN & probiotics at 72 h,n =25) and the control group (who received EN & probiotics on day 7,n =25).After admission,the levels of PCT,hs-CRP and endotoxin on day 1,4 and 8 were detected.APACHE Ⅱ score on day 3 after admission,complication rate,infection rate,hospitalization duration and mortality were recorded.Results On day 1 after admission,serum PCT,hs-CRP and endotoxin concentrations among three groups were of no significant differences.On day 4 after admission,the serum concentrations of PCT and edotoxin in 24 h group were significantly lower than those in 72 h group and the control group [(3.12 ± 1.45) μg/L vs (5.26±1.52),(6.07 ± l.59) μg/L;(0.24 ± 0.02) EU/ml vs (0.35 ±0.03),(0.46±0.04) EU/ml].The serum hs-CRP in 24 h group was significantly lower than that of the control group [(20.71 ±4.89) μg/L vs (28.37 ± 4.64) μg/L],and the difference was statistically significant (P ＜ O.05).The serum concentrations of hs-CRP in 24 h group and 72 h group was of no significant difference.On day 7 after admission,the serum concentrations of PCT,hs-CRP and endotoxin in 24 h group were significantly lower than those in 72 h group and the control group (P ＜0.05);the serum concentrations of PCT,hs-CRP and endotoxin in 72 h group were significantly lower than those of the control group,and all the differences were statistically significant (all P ＜ 0.05).The score of APACHE Ⅱ (day 3 after admission) [(15.1 ± 1.8)],complication rate (52％),infection rate (8％),length of stay [(19.7 ± 5.3) d] in 24 h group were all significantly lower than those of 72h group [(17.0 ± 2.0),72％,32％,(25.4 ± 6.8) d] and control group [(18.3 ±2.6),84％,44％,(38.7 ± 12.6) d],and all the differences were statistically significant (all P ＜0.05).Conclusions Ultra EN supplemented with probiotics in treating the patients with SAP could significantly reduce the level of serum PCT,hs-CRP and endotoxin,decrease complication rate and mortality,and shorten the time of hospitalization.