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Please wait a minute... For Selected: Download Citations EndNote Ris BibTeX Toggle Thumbnails Select Effect of Tai Chi Chuan exercise on immune function in patients with coal workers' pneumoconiosis LI Chao, YUAN Bao-jun, SHAO Zhong-da, CUI Jing-jing, ZHANG Shu-qing OCCUPATION AND HEALTH    2021, 37 (1): 16-19.   DOI: 10.13329/j.cnki.zyyjk.2021.0003 Abstract （1688）      PDF （1072KB）（1299）       Knowledge map    Save Objective To explore the effect of Tai Chi Chuan exercise on immune function in the patients with coal workers' pneumoconiosis（CWP）. Methods Totally 35 CWP inpatients in Kailuan Occupational Disease Prevention and Control Hospital were selected from February 1-28 in 2019， they voluntarily taken the Tai Chi Chuan exercise seven times every week， one hour every time for three months. At one day before exercise and the second day after three months of exercise， the percentages of lymphocytes subsets CD3 +， CD3 +CD4 +， CD3 +CD8 +， CD19 +， CD16 ++56 +， the percentages of regulatory CD4 +CD25 + T cells and CD19 +CD25 + B cells were determined by a flow cytometer in the peripheral blood collected from CWP patients. The levels of serum immunoglobulin G（IgG）， IgM， IgA and CH50， C3， C4 complements were measured using immune-turbidimetric assay. Results After exercise， the levels of peripheral blood CD16 ++56 + cells significantly increased as compared with before exercise，and the difference was statistically significant （ P<0.05）. There were no significant differences in the levels of CD3 +， CD3 +CD4 +，CD3 +CD8 +， and CD19 + cells （ P>0.05）. However， the levels of CD4 +CD25 + T cells and CD19 +CD25 + B cells and the ratios of CD4 +CD25 +/CD4 + and CD19 +CD25 +/CD19 + after exercise significantly decreased as compared with before exercise， and the differences were statistically significant（all P<0.05）. The level of serum CH50 after exercise was significantly higher than that before exercise （ P<0.05）， and the difference was statistically significant（ P<0.05）. There were no significant differences in the levels of serum IgG， IgA， IgM， C3 and C4 （all P>0.05）. Conclusion Tai Chi Chuan exercise might affect the proportions distribution of peripheral blood lymphocyte subsets and the levels of complement component expression， and then affect the immune function of CWP patients. Related Articles | Metrics Select Application of ICMM assessment model in occupational health risk assessment of a metal surface treatment enterprise QIU Yi-bing, BIAN Huan-feng, LIN Bai-min, LIN Wei-tao, DAI Hao, ZHANG Su-li, LI Xiao-man, LI Yao-cheng, ZHOU Ya-ni OCCUPATION AND HEALTH    2021, 37 (1): 20-23.   DOI: 10.13329/j.cnki.zyyjk.2021.0004 Abstract （1911）      PDF （1089KB）（1472）       Knowledge map    Save Objective To evaluate the status quo of occupational hazards in a metal surface treatment enterprise by using occupational health risk assessment model issued by the International Council on Mining and Metals（ICMM）， provide basis for the risk management and control of occupational hazards in metal surface treatment industry. Methods From August 2019 to June 2020， the qualitative and quantitative assessment methods of ICMM model were used to evaluate the occupational health risk in the workplace of a metal surface enterprise. The accuracy of the occupational health risk assessment results were verified by referring to the occupational health examination results of the enterprise. Results The results of silica dust， sodium hydroxide， phosphoric acid， sulfuric acid， hydrochloric acid， toluene and xylene in a metal surface treatment enterprise by quantitative occupational health risk assessment were unacceptable， which the RR values were 8 000， 900， 900， 900， 900， 6 000 and 6 000， respectively. And the RR value of nitrogen dioxide was 18， and the assessment result was potential risk. By the qualitative assessment method， the assessment results of silica dust， toluene and xylene were high risk， while the results of sodium hydroxide， phosphoric acid， sulfuric acid， hydrochloric acid and nitrogen dioxide were low risk. The comparison of occupational health examination results and risk assessment results showed that the quantitative assessment results of sandblasting， chemical polishing and anodic oxidation positions were consistent with the results of occupational health examination， the result of qualitative assessment of sandblasting position was consistent with results of occupational health examination， and the results of quantitative and qualitative assessment of neutral positions were inconsistent with the results of occupational health examinations. Conclusion ICMM model can be applied to the occupational health risk assessment of occupational hazardous factors in the workplace of the metal surface treatment industry， and the assessment result of quantitative method is more in line with the actual situation of occupational hazards in the industry than that of qualitative method. Related Articles | Metrics Select Changes and clinical significance of atherosclerosis related indexes in patients with occupational asthma BI Yu-lei, HU Ying-hua, QIU Li-li, WU Di, JIANG Xiu-Ling, WANG Chun-lian, JIN Hui, MA Long, FENG Ke-yu, DING Hong OCCUPATION AND HEALTH    2021, 37 (1): 24-28.   DOI: 10.13329/j.cnki.zyyjk.2021.0005 Abstract （1510）      PDF （1336KB）（1014）       Knowledge map    Save Objective To observe the changes of atherosclerosis related indexes in patients with occupational asthma （OA）. Methods From July 2017 to June 2018， 102 OA patients were selected as the case group （they were divided into mild<5 years subgroup， mild≥5 years subgroup， moderate-severe<5 years subgroup and moderate-severe≥5 years subgroup according to the course and severity of disease）， while 30 healthy adults served as control group. Color Doppler ultrasound， arteriosclerosis detector and biochemical detector were used to test the total cholesterol（TC）， triglyceride（TG）， high density lipoprotein cholesterol （HDL-C）， C-reactive protein （CRP）， homocysteine （Hcy）， serum uric acid （UA）， glycosylated hemoglobin （HbA1c）， carotid intima-media thickness（IMT） and ankle brachial index（ABI）. Results Inflammatory cytokine and other indexes: Compared with the control group， CRP level in the four subgroups of the case group were increased. Except for the mild <5year subgroup， the levels of TC， LDL-C， TG and HCY in the other three subgroups were increased， while HDL-C levels were decreased. Among subgroups， the levels of TC， LDL-C， TG and CRP in severe illness or long course groups were increase， while HDL-C levels were decreased. All differences were statistically significant（ P<0.05）. Atherosclerosis indexes: Compared to the control group， IMT level and IMT abnormal rate in mild ≥5 years subgroup and two moderate-severe subgroups were increased， while ABI level in two moderate-severe subgroups were decreased. Among subgroups， IMT level in severe illness or long course groups were increased. All differences were statistically significant（ P<0.05）. Conclusion The atherosclerosis related indexes in patients with OA are increased or abnormal， and aggravated with the extension of course and severity of illness. Related Articles | Metrics Select Influence of exposure to mercuric chloride by drinking water on percentage of T cells and B cells in spleen of mice CAI Hui-ying, WANG Sheng-min, WANG Ming-yue, JIN Guang-bi OCCUPATION AND HEALTH    2021, 37 (1): 29-32.   DOI: 10.13329/j.cnki.zyyjk.20201028.002 Abstract （1315）      PDF （2063KB）（732）       Knowledge map    Save Objective To explore the influence of exposure to mercuric chloride by drinking water on percentage of T cells and B cells in spleen of mice. Methods Seven-week-old female BALB/c mice were randomly divided into control group and three mercuric chloride-treated groups at different time to body weight， 10 in each group. The control group drank double distilled water， and mercuric chloride-treated groups drank mercuric chloride solution of 15 mg/L. At 1， 2 and 3 weeks after exposure， the cytometry was used to measure the number of splenocytes， the percentages of T cells， B cells and T cell subpopulations in the spleen， and the percentage ofregulatory Tcells（Treg） among CD4 +T cells. Results Mercury chloride significantly increased the spleen weight at the first week of exposure， and significantly increased the kidney weight at the third week of exposure. The number of splenocytes was not affected by mercuric chloride. The percentages of T cells[（27.98±3.06）%]， CD4 + T cells[（19.58±2.06）%] and CD8 + T cells[（9.62±1.10）%] in the spleen decreased significantly since the first week of exposure（all P<0.05）， and the changes were most obvious at the second weeks， on the time-dependent manner. Meanwhile， the effect of mercuric chloride on the percentage of B cells was opposite to T cells. At the first week of exposure， mercury chloride significantly increased the percentage of Treg [（14.25±1.41）%] among CD4 + cells. C o nclusion Exposure to mercuric chloride via drinking water alters the percentages of T cells， B cells and T cell subpopulations in the spleen of mice， and increases the percentage of Treg among CD4 + cells. Related Articles | Metrics Select Role of interaction anxiousness and alexithymia between mobile phone addiction and life satisfaction of freshmen HOU Yu-tao, ZHANG Shuo, HOU Yuan-yuan, YANG Zhen-hao, GUO Si-jie, XU Chun-shan OCCUPATION AND HEALTH    2021, 37 (1): 88-91.   DOI: 10.13329/j.cnki.zyyjk.2021.0018 Abstract （1744）      PDF （2079KB）（1339）       Knowledge map    Save Objective To explore the influence and mechanism of mobile phone addiction， interaction anxiousness and alexithymia on life satisfaction. Methods A total of 1 028 freshmen in a medical college in Shandong Province were investigated with the Mobile Phone Addiction Tendency Scale（MPATS）， Interaction Anxiety Scale（IAS）， Toronto Alexithymia Scale（TAS） and Adolescent Student’s Life Satisfaction Scale（ASLSS） in September 2018. Results Mobile phone addiction was positively correlated with interaction anxiousness and alexithymia （ r=0.325， 0.546， both P<0.01）， and negatively correlated with life satisfaction （ r=-0.278， P<0.01）. Bootstrap mediating effect test showed that the mediating effect value of IAS score between MPATS score and life satisfaction was -0.052， accounting for 18.71% of the total effect， the mediating effect value of TAS score between MPATS score and life satisfaction was -0.180， accounting for 64.75% of the total effect， and the value of chain mediated effect nof IAS and TAS score between cell phone addiction and life satisfaction was -0.035， accounting for 12.59% of the total effect.  Conclusion Interaction anxiousness and alexithymia of freshmen completely mediate the influence of mobile phone addiction on life satisfaction Related Articles | Metrics Select Effect of different interventions on sleep quality of nursing staff: a network meta-analysis LIU Jun-er, CAO Wei-jie, LI Long OCCUPATION AND HEALTH    2021, 37 (1): 97-102.   DOI: 10.13329/j.cnki.zyyjk.20201020.001 Abstract （1393）      PDF （2239KB）（1246）       Knowledge map    Save Objective To systematically evaluate the effects of different interventions on sleep quality of nursing staff. Methods Randomized Controlled Trials（RCTs） about the effects of different interventions on sleep quality of nursing staff were searched from PubMed， Embase， Medline， CINAHL， The Cochrane Library， CNKI， CBM， Wanfang and VIP databases by computer retrieval. The Cochrane Library risk quality assessment tool was used for literature evaluation and grade evaluation. Review Manager 5.2 was used for traditional meta-analysis and ADDIS 1.16.8 was used for network meta-analysis. Results A total of 12 articles and 11 interventions were included，involving 1 007 nurses. Traditional meta-analysis showed that the non drug intervention measures could effectively improve the sleep quality of nursing staff （ MD=-2.73，95% CI ：-3.42--2.04）， and the difference was statistically significant （ P<0.01）. Network meta-analysis showed that auricular points plaster therapy could effectively reduce the PSQIscore of nursing staff as comparedwith routine nursing intervention（ MD=-4.70， 95% CI：-9.26 0.04）， and the difference was statistically significant（ P<0.05）. The probability ranking results showed that in the routine nursing groups，auricular points plaster therapy >cognitive behavior intervention +EEG biofeedback >recovery experience intervention >group psychological intervention>humanized management>scraping>routine nursing. Conclusion Non drug intervention can effectively improve the sleep quality of nursing staff. Compared with routine nursing measures， auricular points plaster therapy can improve the sleep quality of nursing staff. Related Articles | Metrics Select Research progress on psychological crisis intervention of officers and soldiers in wartime MA Zhu-jing, ZHANG Qin-tao, REN Lei, WU Zhong-ying, WANG Yi-di, WANG Qi, YANG Qun OCCUPATION AND HEALTH    2021, 37 (1): 132-136.   DOI: 10.13329/j.cnki.zyyjk.2021.0028 Abstract （1814）      PDF （2382KB）（2502）       Knowledge map    Save In actual combat， officers and soldiers will face the situation such as fatigued battles， night operations， severe weather， and lone army penetration and they will witness blood， broken arms， corpses at any time. These special circumstances may cause adverse military stress reaction of the combatants， even produce psychological crisis， affecting combat effectiveness. In order to reduce the battle wear and tear caused by psychological problems， the paper reviews the current state of research on psychological crisis intervention and psychological rehabilitation technology， with a view to providing a certain reference for our military in terms of psychological maintenance during wartime. Related Articles | Metrics Select Research status and development trend of medical equipment for liquid propellants QIU Hong-jie, HU Hong-fang OCCUPATION AND HEALTH    2021, 37 (1): 137-140.   DOI: 10.13329/j.cnki.zyyjk.2021.0029 Abstract （1163）      PDF （2265KB）（1499）       Knowledge map    Save When missile troops are engaged in liquid propellant operation， once an accident occurs， it will threaten the health of operators. Mastering the toxicological characteristics of liquid propellants， the strategies of medical prevention and control， as well as the research status and development trend of medical equipment can effectively guarantee the safety of liquid propellant operators and maintain the combat effectiveness of missile forces. Therefore， the paper summarizes the research status and development trend of liquid propellant medical equipment. Related Articles | Metrics