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1.
Neurosci Lett ; : 137890, 2024 Jul 03.
Article in English | MEDLINE | ID: mdl-38971300

ABSTRACT

Spinal cord injury (SCI) remains a worldwide challenge due to limited treatment strategies. Repetitive trans-spinal magnetic stimulation (rTSMS) is among the most cutting-edge treatments for SCI. However, the mechanism underlying rTSMS on functional recovery is still unclear. In this study, 8-week-old C57BL/6J female mice were used to design SCI models followed by treatment with monotherapy (1 Hz rTSMS or LY364947) or combination therapy (rTSMS + LY364947). Our results showed obvious functional recovery after monotherapies compared to untreated mice. Immunofluorescence results demonstrated that rTSMS and LY364947 modulate the lesion scar by decreasing fibrosis and GFAP and possess the effect on neural protection. In addition, rTSMS suppressed inflammation and the activation of TGFß1/Smad2/3 signaling pathway, as evidenced by markedly reduced TGF-ßRⅠ, Smad2/3, and p-Smad2/3 compared with untreated mice. Overall, it was confirmed that 1 Hz rTSMS promotes SCI recovery by suppressing the TGFß1/Smad2/3 signaling, revealing a novel pathological mechanism of 1 Hz rTSMS intervention, and may provide potential targets for clinical treatment.

2.
J Affect Disord ; 350: 286-294, 2024 Apr 01.
Article in English | MEDLINE | ID: mdl-38220107

ABSTRACT

BACKGROUND: This study aimed to investigate the associations between provider payment methods and expenditure of depressive patients, stratified by service types and hospital levels. METHODS: We used a 5 % random sample of urban claims data in China (2013-2017), collected by China Health Insurance Research Association. Provider payment methods (fee-for-services, global budget, capitation, case-based and per-diem payments) were the explanatory variables. A generalized linear model was fitted for the associations between provider payment methods and expenditure. All analyses were adjusted for patient"cioeconomic and health-related characteristics. RESULTS: In total, 64,615 depressive patient visits were included, 59,459 for outpatients and 5156 for inpatients. Female patients accounted for 63.00 %. The total and out-of-pocket (OOP) expenditure significantly differentiated by provider payments. Among outpatient services, when comparing with fee-for-services, capitation payment was associated with substantial marginal reduction in total and OOP expenditure (-$34.18, -$9.71) in primary institutes, yet increases ($27.26, $24.11) in secondary hospitals. Similarly, global budget was associated with lower total and OOP expenditure (-$13.51, -$1.61) in secondary hospitals, while higher total and OOP expenditure ($7.43, $32.27) in tertiary hospitals than fee-for-services. For inpatients, total and OOP expenditures under per-diem (-$857.65, -$283.48) and case-based payments (-$997.93, -$137.56) were remarkably smaller than those under fee-for-services in primary and secondary hospitals, respectively. Besides, case-base payment was only linked with the largest reduction in OOP expense (-$239.39) in inpatient services of tertiary hospitals. LIMITATION: Only urban claims data was included in this study, and investigations for rural population still warrant. And updated data are needed for future studies. CONCLUSIONS: There were varying correlations between provider payment methods and expenditure, which differed by service types and hospital levels. These findings provided empirical evidence for optimizing the mixed payment methods for depression in China.


Subject(s)
Health Expenditures , Insurance, Health , Humans , Female , Hospitals , Ambulatory Care , Linear Models , China
3.
Front Public Health ; 11: 1148847, 2023.
Article in English | MEDLINE | ID: mdl-37181683

ABSTRACT

Objective: The COVID-19 pandemic has challenged the health system worldwide. This study aimed to assess how China's hierarchical medical system (HMS) coped with COVID-19 in the short-and medium-term. We mainly measured the number and distribution of hospital visits and healthcare expenditure between primary and high-level hospitals during Beijing's 2020-2021 pandemic relative to the 2017-2019 pre-COVID-19 benchmark period. Methods: Hospital operational data were extracted from Municipal Health Statistics Information Platform. The COVID-19 period in Beijing was divided into five phases, corresponding to different characteristics, from January 2020 to October 2021. The main outcome measures in this study include the percentage change in inpatient and outpatient emergency visits, and surgeries, and changing distribution of patients between different hospital levels across Beijing's HMS. In addition, the corresponding health expenditure in each of the 5 phases of COVID-19 was also included. Results: In the outbreak phase of the pandemic, the total visits of Beijing hospitals declined dramatically, where outpatient visits fell 44.6%, inpatients visits fell 47.9%; emergency visits fell 35.6%, and surgery inpatients fell 44.5%. Correspondingly, health expenditures declined 30.5% for outpatients and 43.0% for inpatients. The primary hospitals absorbed a 9.51% higher proportion of outpatients than the pre-COVID-19 level in phase 1. In phase 4, the number of patients, including non-local outpatients reached pre-pandemic 2017-2019 benchmark levels. The proportion of outpatients in primary hospitals was only 1.74% above pre-COVID-19 levels in phases 4 and 5. Health expenditure for both outpatients and inpatients reached the baseline level in phase 3 and increased nearly 10% above pre-COVID-19 levels in phases 4 and 5. Conclusion: The HMS in Beijing coped with the COVID-19 pandemic in a relatively short time, the early stage of the pandemic reflected an enhanced role for primary hospitals in the HMS, but did not permanently change patient preferences for high-level hospitals. Relative to the pre-COVID-19 benchmark, the elevated hospital expenditure in phase 4 and phase 5 pointed to hospital over-treatment or patient excess treatment demand. We suggest improving the service capacity of primary hospitals and changing the preferences of patients through health education in the post-COVID-19 world.


Subject(s)
COVID-19 , Humans , COVID-19/epidemiology , Pandemics , Hospitals , Adaptation, Psychological , China/epidemiology
4.
Psych J ; 12(2): 195-201, 2023 Apr.
Article in English | MEDLINE | ID: mdl-36336336

ABSTRACT

Recognizing facial expressions is crucial for adaptive social interaction. Prior empirical research on facial expression processing has primarily focused on isolated faces; however, facial expressions appear embedded in surrounding scenes in everyday life. In this study, we attempted to demonstrate how the online car-hailing scene affects the processing of facial expression. This study examined the processing of drivers' facial expressions in scenes by recording event-related potentials, in which neutral or happy faces embedded in online car-hailing orders were constructed (with type of vehicle, driver rating, driver surname, and level of reputation controlled). A total of 35 female volunteers participated in this experiment and were asked to judge which facial expressions that emerged in scenes of online car-hailing were more trustworthy. The results revealed an interaction between facial expression scenes, brain areas, and electrode sites in the late positive potential, which indicated that happy faces elicited larger amplitudes than did neutral ones in the parietal areas and that scenes with happy facial expressions had shorter latencies than did those with neutral ones. As expected, the late positive potential evoked by happy facial expressions in a scene was larger than that evoked by neutral ones, which reflected motivated attention and motivational response processes. This study highlights the importance of scenes as context in the study of facial expression processing.


Subject(s)
Emotions , Facial Expression , Humans , Female , Emotions/physiology , Automobiles , Evoked Potentials/physiology , Brain/physiology , Electroencephalography
5.
BMC Health Serv Res ; 22(1): 612, 2022 May 07.
Article in English | MEDLINE | ID: mdl-35524258

ABSTRACT

BACKGROUND: Health insurance plays a significant role in reducing the financial burden for lung cancer patients. However, limited research exists regarding the differences in medical costs for lung cancer patients with different insurance schemes across different cities. We aimed to assess disparities in lung cancer patients' costs by insurance type and city-specific insurance type. METHODS: Claim data of China Urban Employees' Basic Medical Insurance (UEBMI) and Urban Residents' Basic Medical Insurance (URBMI) between 2010 and 2016 were employed to investigate differences in medical costs. This study primarily applied descriptive analysis and a generalized linear model with a gamma distribution and a log link. RESULTS: In total, 92,856 lung cancer patients with inpatient records were identified, with Renminbi (RMB) 11,276 [6322-20,850] (median [interquartile range]) medical costs for the UEBMI group and RMB 8303 [4492-14,823] for the URBMI group. Out-of-pocket (OOP) expenses for the UEBMI group was RMB 2143 [1108-4506] and RMB 2975 [1367-6275] for the URBMI group. The UEBMI group also had significantly higher drug costs, medical service costs, and medical consumable costs, compared to the URBMI group. Regarding city-specific insurances, medical costs for the UEBMI and the URBMI lung cancer patients in Shanghai were RMB 9771 [5183-16,623] and RMB 9741 [5924-16,067], respectively. In Xianyang, the medical costs for UEBMI and URBMI patients were RMB 11,398 [6880-20,648] and RMB 9853 [5370-24,674], respectively. The regression results showed that the UEBMI group had 27.31% fewer OOP expenses than the URBMI group did, while patients in Xiangyang and Xianyang had 39.53 and 35.53% fewer OOP expenses, respectively, compared to patients in Shanghai. CONCLUSIONS: Compared with the URBMI patients, the UEBMI lung cancer patients obtained more or even better health services and had reduced financial burden. The differences in insurances among cities were greater, compared to those among insurances within cities, and the differences in OOP expenses between cities were greater compared to those between UEBMI and URBMI. Our results called for further reform of China's fragmented insurance schemes.


Subject(s)
Insurance, Health , Lung Neoplasms , China , Health Expenditures , Humans , Lung Neoplasms/therapy , Retrospective Studies , Urban Population
7.
Article in English | MEDLINE | ID: mdl-35096115

ABSTRACT

BACKGROUND: The challenges of modern medicine in addressing chronic diseases necessitate a shift of attention towards traditional medicine (TM) and other supplementary care systems. China has prioritized the strengthening of traditional Chinese medicine (TCM) in the health system reform since 2009. This study sought to assess the effects of the reform on TCM and the resultant effect of a strengthened TCM on health outcomes and financial protection. METHODS: Longitudinal data were obtained from the China Statistical Yearbook, China Health Statistical Yearbook, China Population Statistical Yearbook, and Statistical Extract of Traditional Chinese Medicine in 31 provinces of mainland China between 2002 and 2016. Dependent variables included health outcomes measured by age-standardized excess mortality and life expectancy at birth and financial protection measured by the proportion of health expenses in total consumption expenses. The independent variables consisted of the number and proportion of TCM physicians. The fixed effects (FEs) models were established to identify the effect of the independent variables on outcomes. RESULTS: From 2009 to 2016, the number and proportion of TCM physicians increased from 22 to 36 physicians per 100,000 population and from <12% to >15%, respectively. The changes were more rapid and higher than that in the period before the reform. An increase of 1 TCM physician per 100,000 population was associated with a decrease of 1.944 excess deaths, a 5.84-day increase in male life expectancy, and a decrease of 0.051% of health expenses among both urban and rural residents. An increase in proportion of 1% of TCM physicians was associated with a decrease of 5.097 excess deaths, a 17.52-day increase of life expectancy (both genders), an increase of 21.535-day in life expectancy (males) per 100,000 population, and a decrease of 0.082% of health expenses among rural residents. CONCLUSION: During China's health system reform, the increased physician number has strengthened TCM. Higher TCM physician supply was associated with improved health outcomes and financial protection, which implies that the reform may have important implications on health system performance in China.

8.
Int J Health Policy Manag ; 11(3): 277-286, 2022 Mar 01.
Article in English | MEDLINE | ID: mdl-32702803

ABSTRACT

BACKGROUND: Understanding the treatment costs of stroke can guide health policies and interventions. However, few studies have analyzed the treatment costs of stroke in China. The aim of this study is to assess stroke-related medical service utilization, direct costs of stroke and associated stroke predictors, and, second, to understand the structure of medical resource use. METHODS: This study used a 5% random sample of claim data from China's Urban Basic Medical Insurance between January 2013 to December 2016. The sampling design assigned a sample weight to each beneficiary. Weighted descriptive analyses, Poisson regression and generalized linear model were used to analyze the medical service utilization, costs and their associations with patient characteristics. RESULTS: In urban China, the annual prevalence of stroke was 730.43 (95% CI = 730.10-730.76) cases per 100 000 people, and nearly 2% of total health expenditures of urban residents was spent on stroke-related medical costs. Weighted average annual total medical cost of stroke was RMB10 637 [95% CI = 10 435-10 840] (US$1682, 95% CI = 1650-1714), with annual out-of-pocket (OOP) cost of RMB3093 [95% CI = 3026-3161] (US$489, 95% CI = 478-500). The average yearly number of stroke-related outpatient visit was 1.67 [SD = 3.39] and inpatient admission was 0.79 [SD = 0.83], with an average cost of RMB440 [SD = 739] (US$70, SD = 117) for outpatients and RMB12 702 [SD = 21 424] (US$2008, SD = 3387) for inpatients. Inpatient costs accounted for 94% (RMB10 034 or US$ 1586) of medical costs, and tertiary hospitals were the main provider of stroke care. Stroke-related medical care utilization and direct costs were associated with gender, age, pathological stroke types and insurance status. Medication costs contributed to 50.6% (RMB5382 or US$ 851) of the average stroke-related medical costs. CONCLUSION: China's health system bares a large economic burden from stroke. Specific policies are needed to strengthen the capacity of secondary hospitals, alter the structure of medical resource allocation, and target specific sections of the stroke population.


Subject(s)
Insurance, Health , Stroke , China/epidemiology , Health Expenditures , Humans , Stroke/therapy , Urban Population
9.
Front Public Health ; 10: 953695, 2022.
Article in English | MEDLINE | ID: mdl-36589992

ABSTRACT

Background: The maldistributions of the health workforce showed great inconsistency when singly measured by population quantity or geographic area in China. Meanwhile, earlier studies mainly employed traditional econometric approaches to investigate determinants for the health workforce, which ignored spillover effects of influential factors on neighboring regions. Therefore, we aimed to analyze health workforce allocation in China from demographic and geographic perspectives simultaneously and then explore the spatial pattern and determinants for health workforce allocation taking account of the spillover effect. Methods: The health resource density index (HRDI) equals the geometric mean of health resources per 1,000 persons and per square kilometer. First, the HRDI of licensed physicians (HRDI_P) and registered nurses (HRDI_N) was calculated for descriptive analysis. Then, global and local Moran's I indices were employed to explore the spatial features and aggregation clusters of the health workforce. Finally, four types of independent variables were selected: supportive resources (bed density and government health expenditure), healthcare need (proportion of the elderly population), socioeconomic factors (urbanization rate and GDP per capita), and sociocultural factors (education expenditure per pupil and park green area per capita), and then the spatial panel econometric model was used to assess direct associations and intra-region spillover effects between independent variables and HRDI_P and HRDI_N. Results: Global Moran's I index of HRDI_P and HRDI_N increased from 0.2136 (P = 0.0070) to 0.2316 (P = 0.0050), and from 0.1645 (P = 0.0120) to 0.2022 (P = 0.0080), respectively. Local Moran's I suggested spatial aggregation clusters of HRDI_P and HRDI_N. For HRDI_P, bed density, government health expenditure, and GDP had significantly positive associations with local HRDI_P, while the proportion of the elderly population and education expenditure showed opposite spillover effects. More precisely, a 1% increase in the proportion of the elderly population would lead to a 0.4098% increase in HRDI_P of neighboring provinces, while a 1% increase in education expenditure leads to a 0.2688% decline in neighboring HRDI_P. For HRDI_N, the urbanization rate, bed density, and government health expenditure exerted significantly positive impacted local HRDI_N. In addition, the spillover effect was more evident in the urbanization rate, with a 1% increase in the urbanization rate relating to 0.9080% growth of HRDI_N of surrounding provinces. Negative spillover effects of education expenditure, government health expenditure, and elderly proportion were observed in neighboring HRDI_N. Conclusion: There were substantial spatial disparities in health workforce distribution in China; moreover, the health workforce showed positive spatial agglomeration with a strengthening tendency in the last decade. In addition, supportive resources, healthcare needs, and socioeconomic and sociocultural factors would affect the health labor configuration not only in a given province but also in its nearby provinces.


Subject(s)
Health Workforce , Physicians , Aged , Humans , Delivery of Health Care , Urbanization , China
10.
J Alzheimers Dis ; 82(1): 285-291, 2021.
Article in English | MEDLINE | ID: mdl-34024828

ABSTRACT

BACKGROUND: In China, family caregivers play a major role in caring for people living with Alzheimer's disease (PLWAD), but little is known about the burden this creates. OBJECTIVE: This study aimed to investigate the burden among family caregivers of PLWAD and the factors influenced it. METHODS: Family caregivers of PLWAD were recruited from a hospital in China from January 2018 to July 2018. All data were collected online using the Chinese version of the Zarit Burden Interview (ZBI), and the participants' sociodemographic and caregiving details were obtained. T-tests and Kruskal-Wallis H (K) tests were used to compare ZBI scores between groups. Factors related to the caregiver psychological burden were analyzed using multiple linear regression analysis. RESULTS: A total of 300 participants were assessed, of which 213 (71.00%) were female. More than half of the caregivers were the patient's daughter (51.0%, n = 153). The average ZBI score of the caregivers was 43.05 (13.42). The level of burden was influenced by age, the relationship of the caregiver to the patient, the severity of AD, the caregiver's retirement status, the income level of the caregiver, and the caring time. Regression analysis showed that retired caregivers were more likely to have higher levels of burden and that burden increased with AD severity. CONCLUSION: Most family caregivers of PLWAD have a considerable caregiver psychological burden. The findings increase the understanding of factors that influence family caregiver burden, and pave the way for potential interventions, such as social support and caregiver empowerment, to reduce their burden.


Subject(s)
Alzheimer Disease/psychology , Caregivers/statistics & numerical data , Severity of Illness Index , Adult , Caregivers/psychology , China , Cross-Sectional Studies , Female , Humans , Interviews as Topic , Male , Middle Aged , Sex Factors , Socioeconomic Factors
11.
BMJ Open ; 10(10): e040437, 2020 10 10.
Article in English | MEDLINE | ID: mdl-33040017

ABSTRACT

OBJECTIVES: This study investigates the disparities in the utilisation of patient health services for patients who had a stroke covered by different urban basic health insurance schemes in China. DESIGN: We conducted descriptive analysis based on a 5% random sample from claims data of China Urban Employees' Basic Medical Insurance (UEBMI) and Urban Residents' Basic Medical Insurance (URBMI) in 2015, supplied by the China Health Insurance Research Association. SETTING: Chinese urban social insurance system. PARTICIPANTS: A total of 56 485 patients who had a stroke were identified, including 36 487 UEBMI patients and 19 998 URBMI patients. PRIMARY AND SECONDARY OUTCOME MEASURES: The primary outcome measures include annual number of hospitalisations, average length of stay (ALOS) and average hospitalisation cost. Out-of-pocket (OOP) cost is the secondary outcome measure. RESULTS: The annual mean number of hospitalisations of UEBMI patients was 1.21 and 1.15 for URBMI patients. The ALOS was significantly longer for UEBMI than for URBMI patients (13.93 vs 10.82, p<0.001). Hospital costs were significantly higher for UEBMI than for URBMI patients (US$1724.02 vs US$986.59 (p<0.001), while the OOP costs were significantly higher for URBMI than for UEBMI patients (US$423.17 vs US$407.81 (p<0.001). Patients with UEBMI had higher reimbursement rate than URBMI patients (79.41% vs 66.92%, p<0.001) and a lower self-paid ratio than URBMI patients (23.65% vs 42.89%, p<0.001). CONCLUSIONS: Significant disparities were found in the utilisation of hospital services between UEBMI and URBMI patients. Our results call for a systemic strategy to improve the fragmented social health insurance system and narrow the gaps in China's health insurance schemes.


Subject(s)
Brain Ischemia , Ischemic Stroke , Stroke , China , Cross-Sectional Studies , Humans , Insurance, Health , Stroke/therapy , Urban Population
12.
BMC Complement Med Ther ; 20(1): 39, 2020 Feb 07.
Article in English | MEDLINE | ID: mdl-32033545

ABSTRACT

BACKGROUND: Stroke is a major cause of death and disability worldwide. Over the years, traditional medicines for stroke treatment have undergone tremendous progress, but few bibliometric studies have been performed. This study explored the trends and issues relating to the application of traditional medicine in stroke research. METHODS: A bibliometric search was performed in the Web of Science Core Collection database to identify studies that investigated the application of traditional medicine in stroke management. CiteSpace VI and Excel 2016 were used to analyze information from the retrieved studies. Activity index and attractive index were used to explore the worldwide development modes. RESULTS: A total of 1083 English articles published between 2004 and 2018 were identified. Over the last 15 years, the developments in research occurred in three geographic clusters. The development modes were investigated and classified into 4 categories. In mainland China, the number and impact of research showed an increasing trend over the study period. The United States played a leading role in this topic. Three clusters of institutes and the majority of authors mainly came from South Korea, Taiwan and mainland China. Reperfusion injury and angiogenesis were identified as the potential topics likely to dominate future research in this field. CONCLUSION: The progress of studies on traditional medicine for stroke could be explained by the global attention to traditional medicine, the geospatial proximity for research collabration, and the increasing resources invested. Based on a large amount of existing research, researchers engaged in this topic should objectively consider the influential studies to identify and solve the common issues worldwide.


Subject(s)
Bibliometrics , Medicine, Traditional/methods , Publications/trends , Research Design , Stroke/therapy , China , Humans , Republic of Korea , Taiwan , United States
13.
Hum Vaccin Immunother ; 16(1): 148-157, 2020.
Article in English | MEDLINE | ID: mdl-31287778

ABSTRACT

Objectives: To assess the prevalence of hepatitis B virus (HBV) infection among married individuals and to analyze the associated risk factors of HBV infection in vaccinated and unvaccinated groups in 2006 and 2014.Methods: Information of married individuals aged over 16 y with a clear HBV vaccination status was extracted from the database constructed by the Beijing Center for Disease Prevention and Control from population-based investigation.A structured questionnaire was employed to collect demographic information, vaccinated history, and other related influence information of HBV of participants. Pearson chi-square test, Fisher's test, and logistic regression were used to explore the risk factors of HBV infection.Results: A total of 2874 individuals in 2006 and 1622 individuals in 2014 were enrolled in our study. The mean age of individuals was 49.30 and 46.68 y in 2006 and 2014, respectively. The overall positive rates of HBsAg, anti-HBc, and single anti-HBs were 4.80%, 43.01%, and 5.78% in 2006, which were 4.69%, 38.22%, and 14.18% in 2014, respectively. For vaccinated individuals, age was significantly correlated with anti-HBc in 2014 (40 < age ≤50 versus age ≤30, relative risk (RR) = 3.03, 95% confidence interval (95%CI) = 1.04-8.84). Gender [male versus female, RR = 0.60, 95%CI = 0.36-1.00 (2006); RR = 0.71, 95%CI = 0.52-0.97 (2014)] and age (in 2006) were found to be significantly associated with single anti-HBs.For unvaccinated individuals, HBsAg positivity was statistically significant correlated with gender [RR = 1.47, 95%CI = 1.04-2.06, in 2006], residence (urban versus rural, RR = 0.40, 95%CI = 0.24-0.67, in 2006; RR = 0.58, 95%CI = 0.34-0.99, in 2014), sharing syringes [RR = 3.75, 95%CI = 1.33-10.63 (in 2006); RR = 2.07, 95%CI = 1.26-3.41 (in 2014)], infected wives (RR = 1.97, 95%CI = 1.28-3.05, in 2006), and infected husbands (RR = 2.19, 95%CI = 1.25-3.82, in 2006). Anti-HBc positivity was significantly associated with gender [RR = 1.19, 95%CI = 1.10-1.30 (in 2006); RR = 1.24, 95%CI = 1.09-1.40 (in 2014)], age (in 2006 and 2014), endoscopic medicine treatment [RR = 1.16, 95%CI = 1.03-1.32 (in 2006), RR = 1.21, 95%CI = 1.01-1.45 (in 2014)], sharing syringes (RR = 1.43, 95%CI = 1.25-1.64, in 2014), body piercing (RR = 0.84, 95%CI = 0.75-0.93, in 2006), infected wives (RR = 1.32, 95%CI = 1.18-1.47, in 2006), and infected husbands (RR = 1.39, 95%CI = 1.22-1.59, in 2006). Anti-HBs positivity was associated with age (in 2006 and 2014).Conclusions: Prevalence of HBV infection was lower in 2014 than in 2006 according to HBsAg and anti-HBc positivity. Unvaccinated individuals faced much more risk of HBV infection than those of vaccinated.


Subject(s)
Hepatitis B/epidemiology , Spouses/statistics & numerical data , Vaccination/statistics & numerical data , Adult , Beijing/epidemiology , Cross-Sectional Studies , Female , Hepatitis B Antibodies/blood , Humans , Male , Middle Aged , Prevalence , Risk Factors , Surveys and Questionnaires , Young Adult
14.
Int J Mol Med ; 44(2): 582-592, 2019 Aug.
Article in English | MEDLINE | ID: mdl-31173157

ABSTRACT

It is well known that extensive osteoclast formation plays a key role in osteoporosis in post­menopausal women and the elderly. The suppression of extensive osteoclastogenesis and bone resorption may be an effective preventive strategy for osteoporosis. Zoledronic acid (ZOL) has been indicated to play an essential role in regulating bone mineral density and has already been used in large clinical trials. However, the effects of ZOL on osteoclastogenesis remain to be fully elucidated. Therefore, the present study aimed to determine the effects of ZOL on osteoclastogenesis, and to explore the corresponding signalling pathways. By using a cell viability assay, as well as in vitro osteoclastogenesis, immunofluorescence and resorption pit assays, we demonstrated that ZOL (0.1­5 µM) suppressed receptor activator of nuclear factor­κB ligand (RANKL)­induced osteoclast differentiation and bone resorptive activity. Furthermore, western blot analysis and reverse transcription­quantitative PCR indicated that ZOL inhibited the RANKL­induced activation of NF­κB and the phosphorylation of JNK in RAW264.7 cells, and subsequently decreased the expression of osteoclastogenesis­associated genes, including calcitonin receptor, tartrate­resistant acid phosphatase and dendritic cell­specific transmembrane protein. ZOL inhibited osteoclast formation and resorption in vitro by specifically suppressing NF­κB and JNK signalling. On the whole, the findings of this study indicate that ZOL may serve as a potential agent for the treatment of osteoclast­associated diseases, including osteoporosis.


Subject(s)
Bone Density Conservation Agents/pharmacology , MAP Kinase Signaling System/drug effects , NF-kappa B/metabolism , Osteogenesis/drug effects , Zoledronic Acid/pharmacology , Animals , Mice , Osteoclasts/cytology , Osteoclasts/drug effects , Osteoclasts/metabolism , RAW 264.7 Cells
15.
Neuroepidemiology ; 51(3-4): 115-122, 2018.
Article in English | MEDLINE | ID: mdl-30089305

ABSTRACT

BACKGROUND: Stroke has been the leading cause of death in China and contributed almost one-third to stroke deaths worldwide. The rising cost of stroke treatment is of great concern, but has not been thoroughly studied. This study aimed to analyze stroke in-hospital charges by subtypes, age, and sex and investigate potential factors associated with the cost of per stay. METHODS: The research was a retrospective observational study based on patients with a primary diagnosis of stroke from 31 hospitals in Beijing. Characteristics of total treatment cost and cost of per stay were analyzed. The potential influences on hospital charges were explored using a stepwise multiple regression model. RESULTS: A total of 16,111 stroke in-patient admissions were identified among which 8.3% was subarachnoid hemorrhage, 22.4% intracerebral hemorrhage, and 69.1% cerebral infarction. The average length of stay (LoS) was 14.5 (11.9) days. The cost of per stay was USD 4,423.9 (6,684.4) among which the out-of-pocket expenses were USD 1,640.2 (3,118.0). Stroke type, age, medical insurance, treatment results, and hospital level were significantly associated with the cost of stroke (p < 0.001). CONCLUSION: Hospitalization cost of stroke was substantial. These findings provide health policymakers and healthcare professionals with evidence to help guide future spending.


Subject(s)
Health Care Costs , Hospital Charges , Hospitalization/economics , Stroke/economics , Aged , China , Female , Humans , Inpatients , Length of Stay/economics , Male , Middle Aged , Retrospective Studies
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