Objective To analyze the prevalence and influencing factors of work‑related musculoskeletal disorders (WMSDs) among workers in hypermarkets in a district of Shanghai City. Methods A total of 477 frontline workers from hypermarkets were selected as the study participants using a convenience sampling method. The prevalence of WMSDs during the past year was investigated using the Chinese version of the Musculoskeletal Disorders Questionnaire. Results The prevalence of WMSDs among the participants was 50.3%. The shoulder, neck and lower back were the most affected body regions, with prevalence rates of 20.6%, 18.5% and 14.9%, respectively. Multivariate logistic regression analysis showed that workers who smoked or had quit smoking had a higher risk of WMSDs than non-smokers (P<0.01). Workers who engaged in physical exercise more than three times per month after work had a lower risk of WMSDs than those who did not exercise (P<0.01). Workers in warehouse-style hypermarkets had a lower risk of WMSDs than those in traditional hypermarkets (P<0.01). The risk of WMSDs increased with increasing frequency of heavy load handling among hypermarket workers (all P<0.01). Workers who sometimes performed tasks requiring forceful use of the upper limbs or hands had a higher risk of WMSDs than those who never or rarely performed such tasks (P<0.01). Workers engaged in two-shift schedules and other shift systems had a lower risk of WMSDs than those without shift work (both P<0.05). Conclusion Workers in hypermarkets showed a relatively high prevalence of WMSDs, with the shoulder, neck and lower back being the most frequently affected regions. Smoking/cessation, physical exercise, supermarket type, heavy load handling, and forceful use of the upper limbs or hands were associated with WMSDs. Hypermarkets should implement ergonomic interventions based on job characteristics, optimize work organization, and strengthen occupational health management to reduce the prevalence of WMSDs.

Objective To explore the effect and mechanism of Gegen Qinlian decoction (GQD) on myocardial injury induced by high-fat diet combined with streptozotocin in type 2 diabetic mice through network pharmacology and animal experiments. MethodsNetwork pharmacology was applied to screen the potential signaling pathways of GQD in the intervention of diabetic heart disease (DHD). A total of 36 specific pathogen-free (SPF) male C57BL/6J mice aged 8 weeks were acclimatized for 1 week and randomly divided into a normal control group (n=6) and a model group (n=30). Mice in the model group were fed a 60% high-fat diet and 5% glucose water for 4 weeks, and were intraperitoneally injected with 100 mg/kg streptozotocin after 12 h of fasting to establish the type 2 diabetes model. Mice in the normal control group were given a conventional diet and drinking water, and were intraperitoneally injected with an equal volume of citrate buffer after 12 h of fasting at the same time point. After successful establishment of the diabetic mouse model, the model mice were randomly divided into five groups according to body weight: model control group, GQD low-dose group, GQD medium-dose group, GQD high-dose group, and metformin positive control group, with 6 mice in each group. After 6 weeks of intragastric administration of corresponding doses of GQD, metformin, and ddH₂O respectively, all mice in the six groups (one normal control group and five model groups) were anesthetized with inhaled 2% isoflurane, blood samples were collected via eyeball enucleation, and heart tissues were harvested after euthanasia by cardiac exsanguination. Hematoxylin-eosin (HE) staining and wheat germ agglutinin (WGA) staining were performed to observe the pathological damage of myocardial tissues and measure the cross-sectional area of cardiomyocytes. Enzyme-linked immunosorbent assay (ELISA) was used to measure the levels of pro-inflammatory cytokines in serum. Immunohistochemical staining was adopted to determine the protein expression levels of receptor for advanced glycation end products (RAGE), nucleotide-binding domain leucine-rich repeat and pyrin domain-containing receptor 3 (NLRP3), and phosphorylated nuclear factor-κB p65 (p-p65) in myocardial tissues. ResultsNetwork pharmacology analysis revealed that the targets of GQD against DHD were significantly enriched in inflammatory pathways, including the advanced glycation end products (AGEs)-RAGE axis, tumor necrosis factor (TNF) and interleukin-17 (IL-17) signaling pathways. HE and WGA staining results showed that, compared with the normal control group, the model control group exhibited myocardial fiber rupture, cardiomyocyte swelling, and significantly increased cardiomyocyte cross-sectional area (P<0.05). Compared with the model control group, GQD intervention significantly ameliorated the pathological changes, including myocardial fiber rupture, cell swelling, and cardiomyocyte hypertrophy. The results of immunohistochemical staining and ELISA indicated that compared with the model control group, GQD intervention markedly downregulated the protein expression of RAGE, NLRP3, and p-p65 in myocardial tissues, as well as the levels of serum pro-inflammatory cytokines (P<0.05). ConclusionGQD can effectively alleviate myocardial pathological injury in diet-induced type 2 diabetic mice, and its mechanism may be related to inhibiting the activation of the RAGE/p-p65/NLRP3 signaling pathway and reducing myocardial inflammatory response.

Objective:To understand the development status of maternal and child health care institutions in China from 2012 to 2022, identify the challenges they face, and provide references for further promoting the high-quality development of these institutions.Methods:Data from the China Health Statistics Yearbook (2013—2015), China Health and Family Planning Statistics Yearbook (2016—2017), and China Health and Wellness Statistics Yearbook (2018—2023) were used. Descriptive analysis was conducted on the data related to resource allocation and utilization efficiency, service provision, income and expenditure structure, and operational status of maternal and child health care institutions in China from 2012 to 2022, using methods such as fixed-base growth rate, year-on-year growth rate, and average annual growth rate. Results:From 2012 to 2022, the number of maternal and child health care institutions in China decreased from 3 044 to 3 031. In terms of resource allocation, the average annual growth rates of bed numbers and business-use floor area were 5.404% and 10.923%, respectively, while the average annual growth rate of health professionals was 7.183%. Regarding service provision, the average annual growth rates of outpatient visits and inpatient admissions were 3.954% and 1.572%, respectively. In terms of service efficiency, the bed occupancy rate decreased from 76.9% to 53.9%, and the average number of patients seen per physician per day decreased from 8.85 to 7.30. In terms of income and expenditure and operations, the income-expenditure surplus rate decreased from 9.16% to 5.41%, and the debt-to-asset ratio increased from 27.88% to 33.60%. During the same period, the average annual growth rates of bed numbers and business-use floor area in grassroots maternal and child health care institutions were 4.545% and 10.091%, respectively, lower than the national average. The number of outpatient visits increased from 89.03 million to 126.93 million, with an average annual growth rate of 3.610%, while the number of inpatient admissions decreased from 4.19 million to 3.91 million, with an average annual decline of 0.689%. The income-expenditure surplus rate of grassroots institutions decreased from 7.76% to 4.05%, 1.36 percentage points lower than the national level, and the debt-to-asset ratio increased from 27.53% to 36.37%, higher than the overall level.Conclusions:From 2012 to 2022, maternal and child health care institutions in China achieved certain developments in resource allocation and service scale. However, several challenges remain, including unbalanced resource allocation, decreased utilization efficiency, slowed growth in medical service volume, imbalanced income and expenditure structure, increased asset operation risks, and restricted development of grassroots institutions. It is recommended that relevant management departments and maternal and child health care institutions optimize resource allocation, plan for service transformation and upgrading, expand income sources, strengthen internal financial control, and reinforce the construction of high-quality and efficient maternal and child health care systems to promote the high-quality development of maternal and child health care institutions in China.

Objective:To understand the development status of maternal and child health care institutions in China from 2012 to 2022, identify the challenges they face, and provide references for further promoting the high-quality development of these institutions.Methods:Data from the China Health Statistics Yearbook (2013—2015), China Health and Family Planning Statistics Yearbook (2016—2017), and China Health and Wellness Statistics Yearbook (2018—2023) were used. Descriptive analysis was conducted on the data related to resource allocation and utilization efficiency, service provision, income and expenditure structure, and operational status of maternal and child health care institutions in China from 2012 to 2022, using methods such as fixed-base growth rate, year-on-year growth rate, and average annual growth rate. Results:From 2012 to 2022, the number of maternal and child health care institutions in China decreased from 3 044 to 3 031. In terms of resource allocation, the average annual growth rates of bed numbers and business-use floor area were 5.404% and 10.923%, respectively, while the average annual growth rate of health professionals was 7.183%. Regarding service provision, the average annual growth rates of outpatient visits and inpatient admissions were 3.954% and 1.572%, respectively. In terms of service efficiency, the bed occupancy rate decreased from 76.9% to 53.9%, and the average number of patients seen per physician per day decreased from 8.85 to 7.30. In terms of income and expenditure and operations, the income-expenditure surplus rate decreased from 9.16% to 5.41%, and the debt-to-asset ratio increased from 27.88% to 33.60%. During the same period, the average annual growth rates of bed numbers and business-use floor area in grassroots maternal and child health care institutions were 4.545% and 10.091%, respectively, lower than the national average. The number of outpatient visits increased from 89.03 million to 126.93 million, with an average annual growth rate of 3.610%, while the number of inpatient admissions decreased from 4.19 million to 3.91 million, with an average annual decline of 0.689%. The income-expenditure surplus rate of grassroots institutions decreased from 7.76% to 4.05%, 1.36 percentage points lower than the national level, and the debt-to-asset ratio increased from 27.53% to 36.37%, higher than the overall level.Conclusions:From 2012 to 2022, maternal and child health care institutions in China achieved certain developments in resource allocation and service scale. However, several challenges remain, including unbalanced resource allocation, decreased utilization efficiency, slowed growth in medical service volume, imbalanced income and expenditure structure, increased asset operation risks, and restricted development of grassroots institutions. It is recommended that relevant management departments and maternal and child health care institutions optimize resource allocation, plan for service transformation and upgrading, expand income sources, strengthen internal financial control, and reinforce the construction of high-quality and efficient maternal and child health care systems to promote the high-quality development of maternal and child health care institutions in China.

Objective To understand the level of occupational health literacy (OHL) and its influencing factors among occupational population in five key industries of tertiary industry in Putuo District of Shanghai City. Methods A total of 1 159 front-line workers, from five key industries of tertiary industry in Putuo District of Shanghai City in 2023, were selected as the research subjects using the stratified cluster random sampling method. Their OHL levels were surveyed using the Occupational Health Literacy Questionnaire of National Key Populations. Results A total of 1 159 front-line workers in key industries were surveyed, and 476 had OHL, with an overall OHL level of 41.1%. The OHL levels across four dimensions including basic knowledge of occupational health protection, healthy lifestyle and behavior, legal knowledge of occupational health, and basic skills of occupational health protection from high to low were 72.9%,44.5%,42.2%, and 31.3%, respectively. The results of multivariable logistic regression analysis showed that gender, educational level, and industry category were independent influencing factors for OHL level of the research subjects (all P<0.05). Female workers had higher OHL levels than males (P<0.05). Higher education level was associated with higher OHL level in workers (all P<0.05). Workers in industries of medical health had higher OHL level than those in couriers/delivery transportation, education and environmental health(all P<0.01). Conclusion The OHL level of occupational population in the five key industries of tertiary industry in Putuo District of Shanghai City needs to be further improved. Efforts should focus on enhancing health education on legal knowledge and basic skills of occupational health protection, with special attention to workers OHL in the transportation and courier/delivery industries and those with lower education levels.

Objective:To analyze the allocation of general practitioners per 10 000 population in China and its influencing factors, so as to provide reference for optimizing the allocation of general practitioners resources in China.Methods:The number of general practitioners per 10 000 population and other relevant data of 31 provinces (except Hong Kong, Macao and Taiwan) in China from 2012 to 2021 were collected from China Statistical Yearbook, China Health Statistics Yearbook, China Health and Family Planning Statistical Yearbook. The geographical area data of 31 provinces (except Hong Kong, Macao and Taiwan) from 2012 to 2021 were retrieved from the website of the Central People ′s Government. The influencing factors of the number of general practitioners per 10 000 population were preset by literature analysis and unstructured interview. Taking the number of general practitioners per 10 000 population as the dependent variable, the correlation between it and the preset influencing factors was analyzed by panel data regression. Results:From 2012 to 2021, the average annual growth rate of the number of general practitioners per 10 000 population in each province of China was greater than 0. The factors affecting the number of general practitioners per 10 000 population included the number of people per square kilometer ( r=3.818, P<0.01), the number of beds in medical and health institutions per capita ( r=2.135, P<0.01), the proportion of the elderly population aged 65 and above ( r=0.180, P<0.01), and the proportion of total expenditure in medical and health institutions to gross domestic product ( r=0.080, P<0.01). Conclusions:The development trend of general practitioners resources allocation in China is good, but the government needs to integrate the population agglomeration and aging trend, the allocation of medical and health resources, the investment support for the development of general practitioners and other influencing factors, optimize the allocation of general practitioners resources according to local conditions, and strengthen policy support for areas and links where the allocation of general practitioners resources is relatively weak.

Objective:To analyze the allocation of general practitioners per 10 000 population in China and its influencing factors, so as to provide reference for optimizing the allocation of general practitioners resources in China.Methods:The number of general practitioners per 10 000 population and other relevant data of 31 provinces (except Hong Kong, Macao and Taiwan) in China from 2012 to 2021 were collected from China Statistical Yearbook, China Health Statistics Yearbook, China Health and Family Planning Statistical Yearbook. The geographical area data of 31 provinces (except Hong Kong, Macao and Taiwan) from 2012 to 2021 were retrieved from the website of the Central People ′s Government. The influencing factors of the number of general practitioners per 10 000 population were preset by literature analysis and unstructured interview. Taking the number of general practitioners per 10 000 population as the dependent variable, the correlation between it and the preset influencing factors was analyzed by panel data regression. Results:From 2012 to 2021, the average annual growth rate of the number of general practitioners per 10 000 population in each province of China was greater than 0. The factors affecting the number of general practitioners per 10 000 population included the number of people per square kilometer ( r=3.818, P<0.01), the number of beds in medical and health institutions per capita ( r=2.135, P<0.01), the proportion of the elderly population aged 65 and above ( r=0.180, P<0.01), and the proportion of total expenditure in medical and health institutions to gross domestic product ( r=0.080, P<0.01). Conclusions:The development trend of general practitioners resources allocation in China is good, but the government needs to integrate the population agglomeration and aging trend, the allocation of medical and health resources, the investment support for the development of general practitioners and other influencing factors, optimize the allocation of general practitioners resources according to local conditions, and strengthen policy support for areas and links where the allocation of general practitioners resources is relatively weak.

Objective To analyze the clinical application of Extracorporeal Cardiopulmonary Resuscita-tion(ECPR)in patients with refractory cardiac arrest in the emergency department and to investigate the factors affecting survival and neurological outcomes.Methods A retrospective analysis was conducted on the clinical data of 61 patients who underwent Extracorporeal Membrane Oxygenation(ECMO)for cardiopulmonary resuscitation at the emergency department from January 2021 to March 2024.The hospital discharge survival rate,favorable neuro-logical outcome rate,and incidence of complications were summarized.Factors affecting survival and neurological outcomes were also analyzed.Results In a study of 61 patients,the ECMO weaning success rate was 55.7%,the hospital discharge survival rate was 29.5%,the favorable neurological prognosis rate was 21.3%,and the incidence of complications was 47.5%.The proportion of initial cardiac rhythm being shockable was significantly higher in the survival group compared to the mortality group.The ECMO establishment time,low-flow time,and pre-ECMO blood lactate levels were all significantly lower in the survival group than in the mortality group.The pre-ECMO blood pH level was higher in the survival group.The ECMO maintenance time and ICU stay were significantly longer in the survival group than in the mortality group,with all P-values being less than 0.05,indicating statistically significant differences.Patients with an initial shockable cardiac rhythm and low-flow time≤60 minutes had a better favorable neurological prognosis rate.Conclusions Extracorporeal cardiopulmonary resuscitation can provide effective life support for patients with refractory cardiac arrest.Patients with an initial shockable rhythm,lower blood lactate levels and higher pH levels before ECMO support,and shorter low-flow time have a better prognosis.

In order to achieve high-efficiency expression of the porcine circovirus type 3 Cap protein in recombinant Escherichia coli,dissolved oxygen(DO)control strategy,oxygen uptake rate(OUR)control strategy and combined control strategy of DO and OUR were selected to investi-gate their effect on the expression of target protein in a 10 L fermenter.The high-density fermenta-tion process of recombinant E.coli was determined by investigating the best control range of OUR.The recombinant protein was identified by SDS-PAGE and Western blot,and the immunoge-nicity of the protein was evaluated by the animal experiment.The results showed that when the DO control strategy and OUR control strategy were used,the expression of target protein was low.Acetic acid was the key factor affecting the expression of target protein.When acetic acid concen-tration reached 1.02 g/L,Cap protein yield was reduced by 55.8％.In order to reduce the produc-tion of acetic acid,DO was selected to control oxygen supply before feeding,and OUR was selected as the parameter to control oxygen supply after feeding.When OUR value was maintained at 140-160 mmol/(L·h),the Cap protein yield was up to 650 mg/L.Western blot analysis confirmed that PCV3 Cap possessed antigenicity and specificity.Animal experiment showed that the antibody pos-itive rate was 100％after the second immunization,indicating that the target protein had better immunogenicity.The high density fermentation controlled by the combined control strategy of DO and OUR could achieve efficiently soluble expression of PCV3 Cap in the fermenter,which laid the foundation for the vaccine development.

BACKGROUND:The study of the lumbar spine and pelvis in patients with Lenke type 5 lordosis is limited to the coronal and sagittal planes,and the three-dimensional relationship between the scoliosis and the pelvis has not yet been clarified. OBJECTIVE:To analyze the effect of lumbar scoliosis on the pelvis in patients with Lenke type 5 lordosis and to study the correlation between the lumbar spine and the three-dimensional spatial position of the pelvis. METHODS:Imaging data of 60 patients with Lenke type 5 lordosis scoliosis admitted to the 3D Printing Reception Center of Shanghai Ninth People's Hospital,Shanghai Jiao Tong University School of Medicine from January 2019 to September 2023 were retrospectively analyzed,including Cobb angle,coronal pelvic tilt,lumbar lordosis,left and right pelvic hip width ratio(sacroiliac-anterior superior iliac spine),spinal rotation angle,pelvic tilt,sacral slope,pelvic incidence,coronal deformity angular ratio,sagittal deformity angular ratio,C7 plumb line-center sacral vertical line,apical vertebral translation,and coronal sacral inclination.The information was summarized as a database.SPSS 22.0 software was used to analyze the data related to the lumbar spine and pelvis of the patients with Lenke type 5 primary lumbar curvature adolescent idiopathic scoliosis using Spearman's correlation analysis and linear regression. RESULTS AND CONCLUSION:(1)Cobb angle was highly positively correlated with coronal deformity angular ratio,apical vertebral translation,and spinal rotation angle(r=0.91,r=0.841,r=0.736).(2)Coronal deformity angular ratio was highly positively correlated with apical vertebral translation(r=0.737),moderately positively correlated with C7 plumb line-center sacral vertical line(r=0.514),and moderately negatively correlated with sagittal deformity angular ratio(r=-0.595).(3)There was a high positive correlation between lumbar lordosis and sagittal deformity angular ratio(r=0.942)and a moderate negative correlation with coronal deformity angular ratio(r=-0.554).(4)There was a moderate positive correlation between Cobb angle with coronal pelvic tilt and coronal sacral inclination(r=0.522,r=0.534)and a moderate positive correlation between C7 plumb line-center sacral vertical line and coronal pelvic tilt(r=0.507).Apical vertebral translation with coronal pelvic tilt and coronal sacral inclination showed a moderate positive correlation(r=0.507,r=0.506).Lumbar lordosis with sacral slope and pelvic incidence showed a moderate positive correlation(r=0.512,r=0.538).Sagittal deformity angular ratio was moderately positively correlated with sacral slope and pelvic incidence(r=0.614,r=0.621).(5)Studies have found that the relative position of the lumbar spine and the pelvis is closely related in the horizontal,sagittal and coronal planes.When the lumbar spine affects scoliosis and is rotated,the relative position of the pelvis will also change to compensate,which indicates that while correcting scoliosis,the correction of the pelvis cannot be ignored.