BACKGROUND:The prevalence of osteoporosis is high in postmenopausal women,but muscle mass,grip strength,and how these factors affect osteoporosis are understudied,and the exact link between them has not been clarified.OBJECTIVE:To investigate the correlation between muscle mass,grip strength,appendicular skeletal muscle index and bone mineral density in postmenopausal women with osteoporosis and to assess the potential values of these indices in predicting and diagnosing postmenopausal osteoporosis.METHODS:Eighty-three postmenopausal women were collected from the outpatient clinic of the Third Affiliated Hospital of Guangzhou University of Chinese Medicine from February 2023 to January 2024.General data were collected.Bone mineral density was detected.T-value,muscle mass of each part,grip strength were recorded.The body mass index and appendicular skeletal muscle index were calculated.The patients were categorized into non-osteoporosis group(n=17)and postmenopausal osteoporosis group(n=66)according to T value and fracture history,and were statistically analyzed accordingly.RESULTS AND CONCLUSION:(1)The body mass,body mass index,bone mineral density of the overall lumbar spine,muscle mass and appendicular skeletal muscle index were higher in the non-osteoporosis group than the osteoporosis group(P＜0.05).(2)Muscle mass was positively correlated with bone mineral density of the overall lumbar spine and individual vertebrae(P＜0.05).(3)Multiple stepwise linear regression analysis showed that body mass and grip strength were linearly and positively correlated with muscle mass;body height and muscle mass were linearly and positively correlated with grip strength,and body mass was linearly and negatively correlated with grip strength.Body mass index was linearly and positively correlated with bone mineral density,and age was linearly and negatively correlated with bone mineral density.(4)Analysis by receiver operating characteristic curve showed that:muscle mass(the area under the curve,sensitivity,specificity and critical value of muscle mass were 0.744,76.50％,74.20％and 36.50 kg,respectively,with P=0.002)and appendicular skeletal muscle index(the area under the curve,sensitivity,specificity and critical value of appendicular skeletal muscle index were 0.739,82.40％,62.10％and 5.81 kg/m2,respectively,and P=0.002)had good predictive value for postmenopausal osteoporosis.To conclude,a reduction in muscle mass and appendicular skeletal muscle index can help to predict the risk of postmenopausal osteoporosis,and the possibility of osteoporosis should be taken into account in postmenopausal women when muscle mass is＜36.50 kg or appendicular skeletal muscle index is＜5.81 kg/m2,in order to prevent the occurrence of postmenopausal osteoporosis.

Objective: To understand the hydration status and related factors of rural boarding primary school students, so as to provide a scientific basis for drinking water health intervention for primary school students. Methods: In November 2023, a convenience sampling approach was employed to conduct a hydration status survey among 144 boarding students in grades 5 and 6 of a rural primary school in Guangxi. The Duplicate meal method and weighing method were utilized to measure the food derived water intake over three consecutive days. Urine osmolarity of students was measured on site for three days, and a simple physical examination was also carried out. A self administered questionnaire was used to investigate students drinking water literacy, daily water intake, and physical activity levels. Meanwhile, a drinking water literacy survey was conducted among 21 substitute teachers and 144 parents of the boarding students in grades 5 and 6. Logistic regression was used to identify factors associated with students hydration status. Results: The median daily total water intake of students was 2 043.55 mL, and 54.86% of the students did not reach the recommended Adequate Intake (AI). The median food derived water intake was 1 149.24 mL, accounting for 53.94% of the total water intake. Univariate analysis revealed that the daily drinking frequency, daily water intake, and food derived water intake of students were related factors of hydration status ( β =-1.60, -1.01, -0.00, all P <0.05). Multivariate Logistic regression analysis showed that primary school students with a daily drinking frequency of ≥7 times were more likely to maintain an adequate hydration status ( OR =0.28, 95% CI =0.09-0.93, P ＜0.05). Conclusions The water intake from food is the main source of water in the body for boarding primary school students in a certain rural school in Guangxi. Primary school students should increase their water intake frequency appropriately to maintain an adequate hydration status.

This study aimed to investigate the effect of atractylenolide I (Atr-I) on myocardial mitochondrial function in mice with dilated cardiomyopathy (DCM) by regulating the cyclic GMP-AMP synthase (cGAS)/stimulator of interferon genes (STING) pathway. Sixty SPF-grade male cTnT R141W transgenic DCM mice were randomly divided into the DCM group, Atr-I low-dose group (60 mg/kg), Atr-I high-dose group (240 mg/kg), captopril group (0.01 g/kg), and Atr-I high-dose+cGAS/STING pathway activator 5,6-dimethylxanthenone-4-acetic acid (DMXAA) group, with 12 mice in each group. Additionally, 12 male C57BL/6J mice were used as the control group. All mice were administered via oral gavage once daily for 8 weeks. Cardiac function was assessed using the Vevo 770 ultrasound system; myocardial pathology was examined via HE staining; mitochondrial ultrastructure in cardiomyocytes was observed using transmission electron microscopy; the proportion of cardiomyocytes without reduced mitochondrial membrane potential was detected using JC-1 staining; reactive oxygen species (ROS) content in myocardial tissue was measured using 2',7'-dichlorodihydrofluorescein diacetate (DCFH-DA) staining; adenosine triphosphate (ATP) content in myocardial tissue was determined using a commercial kit; and Western blot was performed to detect the protein expression levels of mitofusin-2 (MFN2), dynamin-related protein 1 (DRP1), cGAS, STING, interferon-β (IFN-β), CXC chemokine ligand 10 (CXCL10), and interleukin-6 (IL-6) in myocardial tissue. The aim was to observe the effect of Atr-I on myocardial mitochondrial function in DCM mice. The results showed that low- and high-dose Atr-I (60 mg/kg, 240 mg/kg) intervention improved cardiac function, alleviated cardiomyocyte hypertrophy and disordered muscle fiber arrangement, ameliorated mitochondrial ultrastructure in cardiomyocytes, reduced ROS content and the protein expression levels of DRP1, cGAS, STING, IFN-β, CXCL10, and IL-6 in myocardial tissue, and increased the proportion of cardiomyocytes without reduced mitochondrial membrane potential, as well as ATP content and MFN2 protein expression in myocardial tissue. However, DMXAA attenuated the beneficial effects of high-dose Atr-I on myocardial mitochondrial function in DCM mice. In conclusion, Atr-I may improve myocardial mitochondrial function in DCM mice by inhibiting the cGAS/STING pathway.

BACKGROUND:The prevalence of osteoporosis is high in postmenopausal women,but muscle mass,grip strength,and how these factors affect osteoporosis are understudied,and the exact link between them has not been clarified.OBJECTIVE:To investigate the correlation between muscle mass,grip strength,appendicular skeletal muscle index and bone mineral density in postmenopausal women with osteoporosis and to assess the potential values of these indices in predicting and diagnosing postmenopausal osteoporosis.METHODS:Eighty-three postmenopausal women were collected from the outpatient clinic of the Third Affiliated Hospital of Guangzhou University of Chinese Medicine from February 2023 to January 2024.General data were collected.Bone mineral density was detected.T-value,muscle mass of each part,grip strength were recorded.The body mass index and appendicular skeletal muscle index were calculated.The patients were categorized into non-osteoporosis group(n=17)and postmenopausal osteoporosis group(n=66)according to T value and fracture history,and were statistically analyzed accordingly.RESULTS AND CONCLUSION:(1)The body mass,body mass index,bone mineral density of the overall lumbar spine,muscle mass and appendicular skeletal muscle index were higher in the non-osteoporosis group than the osteoporosis group(P＜0.05).(2)Muscle mass was positively correlated with bone mineral density of the overall lumbar spine and individual vertebrae(P＜0.05).(3)Multiple stepwise linear regression analysis showed that body mass and grip strength were linearly and positively correlated with muscle mass;body height and muscle mass were linearly and positively correlated with grip strength,and body mass was linearly and negatively correlated with grip strength.Body mass index was linearly and positively correlated with bone mineral density,and age was linearly and negatively correlated with bone mineral density.(4)Analysis by receiver operating characteristic curve showed that:muscle mass(the area under the curve,sensitivity,specificity and critical value of muscle mass were 0.744,76.50％,74.20％and 36.50 kg,respectively,with P=0.002)and appendicular skeletal muscle index(the area under the curve,sensitivity,specificity and critical value of appendicular skeletal muscle index were 0.739,82.40％,62.10％and 5.81 kg/m2,respectively,and P=0.002)had good predictive value for postmenopausal osteoporosis.To conclude,a reduction in muscle mass and appendicular skeletal muscle index can help to predict the risk of postmenopausal osteoporosis,and the possibility of osteoporosis should be taken into account in postmenopausal women when muscle mass is＜36.50 kg or appendicular skeletal muscle index is＜5.81 kg/m2,in order to prevent the occurrence of postmenopausal osteoporosis.

Background: and Purpose In patients with large vessel occlusion (LVO), intravenous thrombolysis (IVT) frequently alters thrombus location; however, the clinical impact of this phenomenon remains unclear. We aimed to compare post-IVT thrombus dynamics between tenecteplase and alteplase and to evaluate the association between thrombus dynamics and 3-month outcomes. Methods: This retrospective study analyzed prospectively collected, multicenter data from consecutive patients with LVO who underwent bridging therapy between January 2022 and December 2024. Thrombus dynamics were classified as resolution, migration, or stability. Analyses incorporated propensity score matching with weighting to balance baseline characteristics. Results: Of the 806 initially included patients, 746 were included after matching (373 treated with tenecteplase and 373 treated with alteplase). The incidence of thrombus migration was significantly higher in the tenecteplase group than in the alteplase group (19.3% vs. 11.3%; odds ratio [OR]: 1.92; 95% confidence interval [CI] 1.27–2.91). The advantage of tenecteplase over alteplase was restricted to patients with an IVT-to-puncture time of <60 minutes (18.6% vs. 6.2%; p=0.001) and was no longer significant when the interval ≥60 minutes (19.7% vs. 15.0%; p=0.204; pinteraction=0.043). Additionally, thrombus migration was associated with a better functional outcome (OR: 1.62; 95% CI 1.04–2.53). Finally, tenecteplase was associated with improved functional independence compared with alteplase (OR: 1.43; 95% CI 1.04–1.95). Conclusions Tenecteplase demonstrated superior efficacy in inducing thrombus migration compared with alteplase, particularly within 60 minutes of IVT administration. Thrombus migration independently predicted improved functional independence. These findings support the preferential use of tenecteplase for bridging therapy in patients with LVO.

Objective To explore the influencing factors of early neurological deterioration(END)in patients with acute anterior circulation large-vessel occlusive mild stroke who were treated with medications alone within 72 h after onset.Methods Retrospective consecutive data were collected of patients with acute large-vessel occlusive mild stroke who presented to the Advanced Stroke Center of Linyi People's Hospital within 24 h of onset from January 2021 to December 2022.END was defined as an increase of ≥ 4 points in the National Institutes of Health stroke scale(N1HSS)score within 72 h after onset compared to the admission score.Patients were divided into the neurological deterioration group and the stable condition group(NIHSS score did not increase or increased by 1-3 points within 72 h after onset compared to the admission score).Baseline and clinical data of all patients were collected,including sex,age,cerebrovascular disease risk factors(hypertension,diabetes mellitus,hyperlipidemia,coronary heart disease,atrial fibrillation,smoking,alcohol consumption,stroke history),NIHSS score at admission,time from onset to admission,systolic blood pressure at admission,diastolic blood pressure at admission,laboratory test indicators at admission(blood glucose,glycosylated hemoglobin,homocysteine,total cholesterol,triglyceride,low-density lipoprotein cholesterol,high-density lipoprotein cholesterol,neutrophils,lymphocytes and neutrophil-to-lymphocyte ratio),responsible occlusion artery(internal carotid artery,middle cerebral artery,anterior cerebral artery),affected cerebral hemisphere,collateral circulation score,and medications used within 72 h after admission(intravenous thrombolysis+dual antiplatelet therapy,tirofiban+dual antiplatelet therapy,argatroban+dual antiplatelet therapy,argatroban alone,dual antiplatelet therapy alone).Variables with statistically significant differences in univariate analysis were included in multivariate Logistic regression analysis to explore the independent influencing factors for END in patients with acute anterior circulation large-vessel occlusive mild stroke treated with medications alone.Results A total of 208 patients with acute anterior circulation large-vessel occlusive mild stroke were included,with 143 males and 65 females,aged 38-85 years,with an average age of(64±9)years.Among them,86 patients were in the neurological deterioration group and 122 in the stable condition group.(1)There were statistically significant differences between the neurological deterioration group and the stable condition group in terms of history of diabetes mellitus(39.5％[34/86]vs.17.2％[21/122]),smoking history(43.0％[37/86]vs.29.5％[36/122]),left cerebral hemisphere lesion(57.0％[49/86]vs.41.0％[50/122]),collateral circulation score(4[3,5]vs.5[4,5]),time from onset to admission(7.0[3.0,17.0]hvs.4.3[2.0,11.0]h),blood glucose at admission(7.4[5.8,10.0]mmol/L vs.6.7[5.8,7.7]mmol/L),neutrophil-to-lymphocyte ratio(3.8[2.4,5.1]vs.3.0[2.1,4.3]),dual antiplatelet therapy alone(19.8％[17/86]vs.6.6％[8/122]),and argatroban+dual antiplatelet therapy(8.1％[7/86]vs.29.5％[36/122];all P＜0.05).There were no statistically significant differences in the results of the remaining univariate analyses(all P＞0.05).(2)Multivariate Logistic regression analysis showed that diabetes mellitus(OR,2.674,95％CI 1.121-6.377,P=0.027)and left cerebral hemisphere vessel occlusion(OR,2.030,95％CI I.083-3.806,P=0.027)were independent risk factors for END in acute anterior circulation large-vessel occlusive mild stroke.Argatroban+dual antiplatelet therapy(OR,0.267,95％CI 0.116-0.613,P=0.002)and high collateral circulation score(OR,0.551,95％CI 0.368-0.824,P=0.004)were independent protective factors for END in acute anterior circulation large-vessel occlusive mild stroke.Conclusions Acute anterior circulation large-vessel occlusive mild stroke patients with diabetes mellitus or left cerebral hemisphere lesions are prone to END.The combination of argatroban and dual antiplatelet therapy and good collateral circulation can reduce the risk of END.

Objective To investigate the mechanism of electroacupuncture to improve gastric motility in functional dyspep-sia(FD)model rats by regulating enteric nervous system through PI3K/Akt signaling pathway.Methods SPF grade SD rats were used and randomly divided into blank group,model group,and electroacupuncture group.The multifactorial stress inter-vention method was used in model group and electroacupuncture group to construct the FD rat model,and the modeling period was 14 days.After successful modeling,the electroacupuncture group was treated with electroacupuncture on the ST 36 and LR3 for 10 days.The body weight and food intake of the rats were measured three times at the beginning of the experiment(0 d),at the end of the modeling period(14 d),and at the end of the electroacupuncture intervention(24 d),respectively.At the end of the intervention,the intragastric residual rate,the morphological structure of gastric antrum,and the protein expression levels and locations of PI3K,Akt,and GFAP in the gastric antrum tissue were measured in each group of rats.Results ① Before modeling,the difference between the body weight of rats in each group was not statistically significant(all P＞0.05).After elec-troacupuncture intervention,the body weight ranking of rats in each group was blank group＞electroacupuncture group＞mod-el group,and the differences between groups were all statistically significant(all P＜0.01).② Before modeling,the difference between the body intake of rats in each group was not statistically significant(all P＞0.05).After electroacupuncture interven-tion,the ranking of food intake of rats in each group was blank group＞electroacupuncture group＞model group,and the differ-ences between groups were all statistically significant(all P＜0.01).③ The ranking of intragastric residual rate of rats in each group was blank group＜electroacupuncture group＜model group,and the differences between groups were all statistically sig-nificant(all P＜0.05).④ There was no organic lesions such as hemorrhage,edema,or ulcer in the gastric antrum tissue of rats in each group.⑤The ranking of protein expression levels of PI3K and Akt in gastric antrum tissue of rats in each group was blank group＞the electroacupuncture group＞the model group,and the differences between the groups were all statistically sig-nificant(all P＜0.05).PI3K and Akt proteins were all expressed in the muscular layer of gastric antrum tissue.⑥The ranking of enteric glial cell(EGC)counting in the gastric antrum tissue of rats in each group was blank group＞electroacupuncture group＞model group,and the differences between groups were all statistically significant(all P＜0.05).Conclusion The mech-anism that electroacupuncture can improve gastric motility in FD model rats may be related to activation of PI3K/Akt signaling pathway in the muscle layer of gastric antrum tissue,upregulation of EGC,and improvement of enteric nervous system function.

The development of polysaccharide conjugate vaccines, which convert polysaccharide antigens into T-cell-dependent immunogens through covalent conjugation with protein carriers, represents a critical strategy for enhancing immune protection in infants and young children. Globally licensed conjugate vaccines currently employ carrier proteins including Tetanus Toxoid, Diphtheria Toxoid, and Cross-Reacting Material 197. Recent advances have focused on three key areas: novel carrier protein discovery, optimized conjugation strategies, and evaluation of immune interference during co-administration of multivalent formulations. These efforts aim to achieve broader serotype coverage, prolonged protective efficacy, and simplified immunization schedules. This review synthesizes recent progress in carrier protein development, encompassing vaccine design principles, manufacturing processes, safety profiles, and epidemiological effectiveness. Furthermore, it critically examines current selection criteria for carrier proteins, their clinical applications, and persistent challenges, providing strategic insights to inform future conjugate vaccine development and immunization policy optimization in China.

Objective:To investigate the association between dopamine D2 receptor ( DRD2) promoter methylation levels and melancholic depression (MD), and its correlation with psychosocial factors and depression severity. Method:A total of 30 patients with melancholic depression (MD group) and 30 with non-melancholic depression (NMD group) were recruited from the First Affiliated Hospital of Xinjiang Medical University between October 2023 and October 2024, along with 30 healthy controls. Participants were assessed by the Hamilton depression rating scale (HAMD-24), dimensional anhedonia rating scale (DARS), childhood trauma questionnaire (CTQ), life event scale (LES), and social support rating scale (SSRS). DRD2 methylation levels in peripheral blood were measured by MassArray technology. Data were analyzed in SPSS 29.0 software using ANOVA, non-parametric tests, and t-tests to compare methylation levels among groups, and Logistic regression, Pearson correlation, and multiple linear regression to examine associations between DRD2 methylation and psychosocial factors and depression severity. Results:(1) There were statistically significant differences among the three groups in years of education ( F=9.873, P=0.007), HAMD-24 total scores ( H=76.669, P<0.001), DARS total scores ( H=60.617, P<0.001), SSRS total scores ( F=3.592, P=0.032), LES negative stimulus scores ( H=43.461, P<0.001), and CTQ total scores ( H=10.751, P=0.005). The MD group had a longer course of illness ( Z=-1.980, P=0.048), more episodes ( Z=-2.027, P=0.043), and a higher rate of suicide attempts in the past year ( χ2= 9.643, P=0.002) compared with the NMD group. The MD group had higher HAMD-24 total scores (31.00 (28.00, 32.25)) than the NMD group (23.00 (21.00, 25.00)), and lower DARS total scores (17.00 (9.75, 22.00)) compared with the NMD group(36.50 (33.75, 43.00)) (both P<0.05). (2) No statistically significant difference was found in DRD2 gene methylation levels among the three groups ( F=0.081, all P>0.05). Logistic regression showed that DRD2 gene methylation level was not an influencing factor for the onset of MD ( P>0.05). (3)The correlation analysis and multiple linear regression analysis showed that childhood trauma (CTQ total score) was negatively correlated with DRD2 gene methylation levels in MD patients ( r=-0.416, P=0.025) and MDD patients. DRD2 gene methylation level was not correlated with depression severity ( r=0.136, P>0.05) or anhedonia severity (both P>0.05). Social support (SSRS total score) was positively correlated with DARS total scores in MD patients( r=0.427, P=0.019), and years of education had a positive association with DARS total scores in MDD patients ( B=1.527, P=0.030), suggesting that both are negatively correlated with the degree of anhedonia. Conclusion:DRD2 methylation may be influenced by early-life trauma, but its role in the pathogenesis of MD and its association with depression severity require further investigation.

Objective:To explore the role of diffusion tensor imaging (DTI) in monitoring prognosis after contralateral C7 nerve transfer in patients with central paralysis.Methods:The clinical data of a 56-year-old male patient with right limb motor impairment after cerebral infarction, admitted to the Department of Neurosurgery at Brain Hospital of Hunan Province in October 2023, were retrospectively analyzed. The patient had experienced right limb motor dysfunction for over 2 years following a cerebral infarction and was treated with contralateral C7 nerve transfer. Follow-ups were conducted at 2 and 6 months postoperatively. Motor function was assessed using the Fugl-Meyer Assessment (FMA) and Activities of Daily Living (ADL) scale, while changes in fractional anisotropy (FA) in the lesion area and corticospinal tract were monitored via DTI.Results:Postoperative follow-up of patient showed: (1) Significant improvement in motor function: ADL scores increased from 65 preoperatively to 75 (2 months postop) and 80 (6 months postop); FMA scores increased from 46 to 58 (2 months postop) and 61 (6 months postop). Muscle tension in the affected upper limb decreased markedly, and range of motion in the right shoulder joint improved. (2) Imaging improvements: DTI revealed an increase in FA values from 0.157 to 0.174 in the lesion area and from 0.52 to 0.53 in the corticospinal tract, indicating partial restoration of neural tract integrity.Conclusions:Contralateral C7 nerve transfer can effectively improve motor function in stroke patients. DTI technology provides an objective imaging basis for clinically assessing functional recovery by quantitatively evaluating changes in neural tract integrity, demonstrating significant value in guiding rehabilitation.