BACKGROUND:As the end bearing joint of the human body,the ankle joint bears the top-down pressure of the body,which leads to the ankle joint is easy to be damaged in the movement,can induce functional ankle instability,which negatively affects daily life.The study of lower extremity biomechanics in patients with functional ankle instability during counter movement jump is of great significance for scientific training,prevention of ankle injury,and clinical rehabilitation after injury. OBJECTIVE:To investigate the kinetics and kinematics of lower limbs in the longitudinal jumping of functional ankle instability population. METHODS:From March to September 2023,15 male patients with functional ankle instability and 15 healthy people,aged 22-28 years old,were recruited in Soochow University.All subjects completed counter movement jump experiment.Vicon infrared high-speed motion capture system and Kistler three-dimensional force measuring table were used to simultaneously collect the lower limb kinematics and kinetics indexes of the two groups of subjects at the take-off stage of counter movement jump,the instant off the ground,the initial landing moment and the peak moment of vertical ground reaction force. RESULTS AND CONCLUSION:(1)At the instant off the ground,the affected side of the functional ankle instability group showed smaller knee internal rotation moment(P=0.020)and smaller ankle internal rotation moment(P=0.009)compared with the affected side of the healthy control group.(2)At the moment of landing,the affected side of the functional ankle instability group showed a smaller hip flexion angle than the affected side of the healthy control group(P=0.039).Compared with the healthy control group,functional ankle instability group showed smaller hip abduction angle(P=0.022),smaller knee varus angle(P=0.010),larger knee external rotation angle(P=0.021),smaller ankle varus angle(P=0.004),and smaller external ankle rotation angle(P=0.008).(3)At the peak of vertical ground reaction force,functional ankle instability group showed a smaller ankle varus angle than healthy control group(P=0.044).(4)The results showed that the lower limb biomechanical characteristics of the patients with functional ankle instability were abnormal compared with the healthy people during counter movement jump,which mainly showed the changes of the kinematics and kinetics indexes of the lower limb joints in the sagittal plane and the frontal plane at the moment of lift-off and landing.These changes reflect that people with functional ankle instability adopt rigid take-off and landing patterns when performing counter movement jump,tend to transfer the load of the affected ankle joint to other joints of the lower limb,and show compensatory phenomenon of the healthy lower limb.Therefore,detection and correction of abnormal biomechanical features should be a part of rehabilitation training for those with functional ankle instability.

Objective:To investigate effect of galangin(Gal)on immune function in nephrotic syndrome(NS)rats by regula-ting stromal cell-derived factor-1(SDF-1)/CXC chemokine receptor 4(CXCR4)signaling pathway.Methods:A NS rat model was established by injecting doxorubicin into tail vein.After successful modeling,rats were randomly grouped into Model group,Gal low,medium and high doses groups,activator group.Twelve rats were randomly selected as control group,and each group was given corre-sponding drug by gavage and intraperitoneal injection,once a day for 6 consecutive weeks.Biochemical indicators such as 24-hour urine protein,urea nitrogen(BUN),creatinine(Scr)and total cholesterol(TC)were detected in rats;HE staining was applied to observe pathological damage in rat kidney tissue;spleen and thymus were taken and weighed,and organ index was calculated;flow cytometry was applied to detect levels of CD3+T,CD4+T,CD8+T,Th1 and Th2 cells in rat peripheral blood;ELISA was applied to detect IL-10,IL-2,TNF-α,IgG and IgM in serum;qRT-PCR and Western blot were applied to detect mRNA and protein expressions of SDF-1 and CXCR4.Results:Compared with control group,24-hour urine protein,BUN,Scr,TC,triglyceride(TG)contents,CD8+T,Th1,Th1/Th2,IL-2,TNF-α,SDF-1,CXCR4 mRNA and protein expressions of rats in Model group were obviously in-creased,albumin(ALB)content,spleen index,thymus index,CD3+T,CD4+T,Th2 cell proportions,CD4+T/CD8+T,IL-10,IgG,and IgM levels were obviously reduced(P<0.05);compared with Model group,24-hour urine protein,BUN,Scr,TC,TG contents,CD8+T,Th1,Th1/Th2,IL-2,TNF-α,SDF-1,CXCR4 mRNA and protein expressions of rats in Gal low,medium and high doses groups were gradually decreased,ALB content,spleen index,thymus index,CD3+T,CD4+T,Th2 cell proportions,CD4+T/CD8+T,IL-10,IgG and IgM levels were gradually increased(P<0.05);compared with high-dose Gal group,changes in above indicators in activator group of rats were obviously reversed(P<0.05).Conclusion:Gal may enhance T lymphocyte immune function by inhibiting SDF-1/CXCR4 pathway,thereby alleviating renal injury in NS rats.

Objective:To investigate effect of galangin(Gal)on immune function in nephrotic syndrome(NS)rats by regula-ting stromal cell-derived factor-1(SDF-1)/CXC chemokine receptor 4(CXCR4)signaling pathway.Methods:A NS rat model was established by injecting doxorubicin into tail vein.After successful modeling,rats were randomly grouped into Model group,Gal low,medium and high doses groups,activator group.Twelve rats were randomly selected as control group,and each group was given corre-sponding drug by gavage and intraperitoneal injection,once a day for 6 consecutive weeks.Biochemical indicators such as 24-hour urine protein,urea nitrogen(BUN),creatinine(Scr)and total cholesterol(TC)were detected in rats;HE staining was applied to observe pathological damage in rat kidney tissue;spleen and thymus were taken and weighed,and organ index was calculated;flow cytometry was applied to detect levels of CD3+T,CD4+T,CD8+T,Th1 and Th2 cells in rat peripheral blood;ELISA was applied to detect IL-10,IL-2,TNF-α,IgG and IgM in serum;qRT-PCR and Western blot were applied to detect mRNA and protein expressions of SDF-1 and CXCR4.Results:Compared with control group,24-hour urine protein,BUN,Scr,TC,triglyceride(TG)contents,CD8+T,Th1,Th1/Th2,IL-2,TNF-α,SDF-1,CXCR4 mRNA and protein expressions of rats in Model group were obviously in-creased,albumin(ALB)content,spleen index,thymus index,CD3+T,CD4+T,Th2 cell proportions,CD4+T/CD8+T,IL-10,IgG,and IgM levels were obviously reduced(P<0.05);compared with Model group,24-hour urine protein,BUN,Scr,TC,TG contents,CD8+T,Th1,Th1/Th2,IL-2,TNF-α,SDF-1,CXCR4 mRNA and protein expressions of rats in Gal low,medium and high doses groups were gradually decreased,ALB content,spleen index,thymus index,CD3+T,CD4+T,Th2 cell proportions,CD4+T/CD8+T,IL-10,IgG and IgM levels were gradually increased(P<0.05);compared with high-dose Gal group,changes in above indicators in activator group of rats were obviously reversed(P<0.05).Conclusion:Gal may enhance T lymphocyte immune function by inhibiting SDF-1/CXCR4 pathway,thereby alleviating renal injury in NS rats.

BACKGROUND: One of the most important treatment modalities for non-small cell lung cancer (NSCLC) is immune checkpoint inhibitor. Nevertheless, a small percentage of patients do not respond well to these therapies, highlighting the significance of identifying important CD8+ T cell subsets for immunotherapy and creating trustworthy biomarkers. The purpose of this study is to assess the potential utility of TIM3+CD8+ T cells as new biomarkers by examining their expressions in various areas of the NSCLC tumor microenvironment. METHODS: Based on biopsy techniques, tumor tissue samples were obtained from patients with NSCLC and categorized into tumor central and non-central regions. Using flow cytometry, the infiltration of TIM3+CD8+ T cells and the surface expression of programmed cell death 1 (PD-1) on these cells were examined, and their correlations with the effectiveness of immunotherapy were assessed. RESULTS: The non-central region of tumor tissues had considerably larger infiltration of TIM3+CD8+ T lymphocytes compared to the non-central region (P<0.0001). This pattern was found in both subgroups with tumor diameters ≥3 cm or <3 cm (P<0.01). In comparison to TIM3-CD8+ T cells, TIM3+CD8+ T cells showed higher levels of PD-1 (P<0.001), with more PD-1+TIM3+CD8+ T cells invading the non-central region (P<0.01). Clinical responders to immunotherapy had considerably lower infiltration levels of TIM3+CD8+ T cells in the tumor non-central region compared to non-responders, with lower levels correlated with better clinical outcomes (P<0.01), while no correlation was identified in the tumor central region (P>0.05). According to reciever operating characteristic (ROC) curve analysis, TIM3+CD8+ T cells in the tumor non-central region had an area under the curve (AUC) of 0.9375 for predicting the effectiveness of immunotherapy, which was considerably higher than that of TIM3+CD8+ T cells in the tumor central region and programmed cell death ligand 1 (PD-L1) [tumor proportion score (TPS)]. CONCLUSIONS In the tumor microenvironment of NSCLC, TIM3+CD8+ T cells show regional distribution patterns. The expression of this cell population in the non-central region of the tumor microenvironment may be a biomarker for predicting the effectiveness of immunotherapy.
Humans ; Carcinoma, Non-Small-Cell Lung/metabolism* ; Lung Neoplasms/metabolism* ; Hepatitis A Virus Cellular Receptor 2/immunology* ; Tumor Microenvironment/immunology* ; CD8-Positive T-Lymphocytes/metabolism* ; Male ; Female ; Middle Aged ; Aged ; Adult ; Programmed Cell Death 1 Receptor/metabolism* ; Immunotherapy ; Clinical Relevance

Objective: To analyze the correlation between refractive errors and physical development indicators among primary school students aged 6 to 9, so as to provide a scientific basis for the development of effective prevention and control measures. Methods: A stratified cluster random sampling method was used to recruit 2 833 elementary school students aged 6 to 9 from Guangdong Province for vision screening, ocular biometry, and physical examinations in Octorber, 2020. The Chi square test, t-test, and ANOVA were employed to compare myopia rates and indicator values across different groups. Multiple linear regression models were used to analyze the correlations between height, weight, and body mass index (BMI) with refractive development indicators. Results: The screening myopia rate among primary school students aged 6 to 9 was 16.7%, and the myopia rate increased with age ( χ 2= 51.58 , P <0.01). The height and weight of the myopic group [(126.96±7.41)cm, (26.59±6.45)kg] were higher than those of the non myopic group [(124.76±7.77)cm, (25.42±5.87)kg] ( t =5.84, 3.65, P <0.01). The mean values of spherical equivalent (SE), axial length (AL), anterior chamber depth (ACD), and AL/corneal curvature radius (CR) ratio for students aged 6 to 9 were (-0.17±1.04)D, (22.96±0.78)mm, (3.38±0.24)mm, and (2.95±0.08), respectively, with statistically significant differences across different age and myopia severity groups ( t =37.08, 119.20, 41.54, 133.60; 935.30, 184.10, 73.95, 498.50, P < 0.01). After adjusting for gender, age, and residence, the multiple linear regression model showed that height was positively correlated with AL and CR, weight was positively correlated with ACD, and BMI was positively correlated with AL and ACD ( β = 0.191 , 0.070, 0.035, 0.013, 0.007, P <0.05). When stratified by myopia status, results for the non-myopic group were similar to the overall results, whereas in the myopic group, the correlations between height, BMI, and AL were not statistically significant ( P > 0.05). Conclusions Among primary school students aged 6 to 9, height and BMI are positively correlated with AL in the non myopic group but no similar correlation is observed in the myopic group, indicating that factors other than physical development, such as environmental and behavioral factors, should be considered for their impact on refractive development.

Objective To investigate the effect of miR-130a targeting phosphase and tensin homology deleted on chromosome ten(PTEN)/phosphoinositide 3 kinase(PI3K)/protein kinase B(AKT)pathway on renal tissuecell apoptosis in diabetic kidney disease(DKD)rats.Methods The DKD rat model was constructed by feeding high-sugar and high-fat diet combined with intraperitoneal injection of streptozotocin(STZ).72 rats were divided into normal control group(NC),DKD model group(DKD),miR-130a agonist negative control group(NC agomir),and miR-130a agonist group(miR-130a agomir),miR-130a agomir+ PTEN overexpression negative control group(miR-130a agomir+pcDNA),and miR-130a agomir+ PCDNA-PTEN overexpression group(miR-130a Agomir + PCDNA-PTEN),with12 rats in each group.Urinary microalbumin kit was used to detect 24 h urine albumin(UAlb).Fasting blood glucose(FBG),serum creatinine(Scr)and blood urea nitrogen(BUN)were detected by automatic biochemical analyzer.Pathological changes of renal tissue were detected by HE staining.The levels of serum IL-6 and TNF-α were detected by ELISA.The apoptosis of renal tissue was detected by TUNEL staining.The expression of miR-130a was detected by qRT-PCR,and the expression of B-cell lymphoma-2-associated X protein(Bax),B-cell lymphoma-2(Bcl-2)and PTEN/PI3K/AKT pathway were detected by Western blot.Dual luciferase reporter gene experiment was used to verify the targeting relationship between miR-130a and PTEN.Results Compared with DKD and NC agomir groups,24 h UAlb,FPG,Scr,BUN,IL-6,TNF-α,renal cell apoptosis rate,Bax protein expression and PTEN protein expression in miR-130a agomir group were decreased(P＜0.05).The expressions of miR-130a,Bcl-2,p-Akt/AKT protein were increased(P＜0.05).Compared with miR-130a agomir group,24 h UAlb,FPG,Scr,BUN,IL-6,TNF-α,renal cell apoptosis rate,Bax protein expression and PTEN protein expression were increased in miR-130a agomir+pcDNA-PTEN group(P＜0.05).The expression of Bcl-2,p-Akt/AKT protein decreased(P＜0.05).Conclusion Overexpression of miR-130a may inhibit renal cell apoptosis in DKD rats by down-regulating PTEN to activate PI3K/AKT pathway.

Objective: The study aims to analyze the prevalence and associated factors of myopia among 4 to 9 grade students in Guangdong Province in 2022, so as to provide a scientific basis for targeted intervention measures for myopia in children and adolescents. Methods: From September to October 2022, stratified cluster random sampling was used to select 29 095 of 4 to 9 grade students from Guangzhou, Jiangmen, and Meizhou in Guangdong Province for myopia screening and questionnaire surveys. The Chisquare test was applied to compare the differences between groups, and multivariable Logistic stepwise regression analysis was used to analyze factors associated with myopia. Results: The myopia detection rate of 4 to 9 grade students was 61.7%, with detection rates of 51.5% for 4 to 6 grade primary school students and 71.95% for 7 to 9 grade junior high school students. Multivariable Logistic regression analysis showed that higher myopia rates were detected among girls (OR=1.39, 95%CI=1.30-1.49), students with one (OR=1.82, 95%CI=1.69-1.96) or both parents having myopia (OR=2.86, 95%CI=2.56-3.18), and indoor sedentary time >6 h(OR=1.28, 95%CI=1.17-1.39) in the 4 to 6 grade. Lower myopia rates were detected in the county (OR=0.92, 95%CI=0.86-0.99) and outdoors at recess activities (OR=0.88, 95%CI=0.81-0.95). Meanwhile, higher myopia rates were detected among girls (OR=1.84, 95%CI=1.69-1.99), students with one (OR=1.87, 95%CI=1.71-2.04) or both parents having myopia (OR=3.03, 95%CI=2.63-3.50), and indoor sedentary time >6 h/d (OR=1.11, 95%CI=1.01-1.23) in the 7 to 9 grade. Lower myopia rates were detected in the county (OR=0.74, 95%CI=0.68-0.80), outdoors at recess activities (OR=0.83, 95%CI=0.76-0.91), and outdoor activity time ≥2 h/d(OR=0.87, 95%CI=0.80-0.95)(P<0.05). Conclusions The detection rate of myopia among 4 to 9 grade students in Guangdong Province is relatively high. Place of recess activities, daily outdoor activity and indoor sedentary duration are associated with myopia. Therefore, targeted intervention measures should be adopted, such as appropriately increasing outdoor activity to reduce the occurrence of myopia among primary and middle school students.

The meridian theory is the pioneer of clinical diagnosis and treatment of diseases in Traditional Chinese Medicine (TCM). From Shang Han Lun to Pi Wei Lun, the meridian theory has contributed important theoretical organization materials and clinical practice experience to the establishment of the diagnosis system of external and internal injuries. The acupoints contained in its clinical acupuncture and moxibustion record symptoms, and some laws summarized have been absorbed and used for reference. It shows the positive significance of its exploration in clinical diagnosis and treatment. A system of differentiation and treatment of external and internal injuries with acupuncture has not been formed, even though the meridian theory of TCM has a long history with many areas being explored, such as diseases, acupoints, acupuncture methods and stimulation amount. Therefore, this paper starts from the academic development history of meridians, reviews and analyzes the contribution and limitations of TCM acupuncture and moxibustion in the diagnosis and treatment of internal injury, in order to enlighten the current study and understanding of TCM.

This paper focused on the research progress of the assessment methods of carers′ fall concern for the elderly. The content of this review included the definition of carers′ fall concern, and the advantages and disadvantages of various assessment method of carers′ fall concern for the caregivers to the elderly, such as qualitative interviews, questionnaires, and scales. Through this review, the authors hoped to provide a reference for selecting or developing a localized carers′ fall concern assessment tool.

Objective:To analyze the clinical characteristics and predictive factors of SSc associated heart disease.Methods:The clinical data of patients with SSc from January 2016 to December 2021 in Ningbo Medical Center Lihuili Hospital were collected. Aight healthy controls come from the medicial examination center. They were divided into a positive group and a negative group based on whether heart involvement was present or not. The clinical manifestations of the two groups were compared by t test, Wilcoxon signed rank test and χ2 test and Logistic regression or ROC curve was used to analyze the prognostic risk of SSc associated heart disease. Then the transcriptome sequencing was used to analyze the differential gene expression. Results:①A total of 75 SSc patients were treated in our hospital, of which 6 patients with overlap syndrome and 1 patient with congenital heart disease were excluded. The clinical data of 68 patients were analyzed including 16 patients in the positive group and 52 patients in the negative group. Among the 16 patients with cardiac involvement, 12 patients (75.0%) had abnormal electrocardiogram, 9 patients (56.2%) with heart valve disease, 8 patients (50.0%) with abnormal cardiac structure and 8 patients (50.0%) with pericardial effusion. The biomarkers were elevated in 10 cases (83.3%). ②Univariate analysis showed that the positive group had a longer course of disease [120(11.2, 132) months vs 48(24, 90)months, Z=-2.08, P=0.037], and the rate of pulmonary arterial hypertension (50.0% vs 11.5%, χ2=11.07, P<0.001) and renal insufficiency(50.0% vs 3.8%, χ2=20.78, P<0.001) in the positive group were significantly higher than those in the negative group. Further Logistic regression analysis revealed that long course of disease [ OR (95% CI) =1.011 (1.001, 1.021), P=0.031], pulmonary arterial hypertension [ OR (95% CI) =5.431, 95% CI (1.065, 27.710), P=0.042] and renal insufficiency [ OR (95% CI) =30.444 (4.139, 223.938), P<0.001] were risk factors for SSc associated heart disease. ③Nail-fold videocapillaroscopy (NVC) was checked in 63 patients. The difference of abnormal NVC changes between the two groups was statistically significant (93.3% vs 58.3%, χ2=5.87, P=0.013). The total number of capillaries in the positive group was significantly less than that in the negative group [3.5(2, 4.8) vs 6 (5, 7), Z=-2.97, P=0.003]. Further ROC curve analysis showed that the total number of capillaries less than 4.5 predicted the occurrence of cardiac involvement (sensitivity was 80.0%, specificity was 83.8%), and the area under the ROC curve (95% CI) was 0.805 (0.061, 1.000, P=0.003).④The transcriptome of a total of 11 SSc patients (including 6 in the positive group and 5 in the negative group) and 8 healthy controls were analyzed to obtain the synchronously down regulated gene TNFRSF13B. The differences between the three groups were statistically significant ( χ2=11.88, P=0.003), especially in the positive group and the healthy controls( χ2=11.19, P=0.004). Conclusion:SSc patients with long course of disease accompanied by PAH and renal insufficiency are prone to have heart involvement. Early capillary endoscopy is also helpful to predict the risk of heart involvement. Moreover, TNFRSF13B genetic testing is helpful but further study is needed.