1.Finite element analysis of three internal fixation modalities for treatment of Pauwels type Ⅲ femoral neck fractures under different loading conditions
Zhenggang LI ; Xuehong SHANG ; Zhang WU ; Hong LI ; Chaojun SUN ; Huadong CHEN ; Zhe SUN ; Yi YANG
Chinese Journal of Tissue Engineering Research 2025;29(3):455-463
BACKGROUND:There is still no consensus on the optimal internal fixation for the treatment of Pauwels Ⅲ femoral neck fracture,and most of the related finite element analyses have been performed using a single simplified loading condition,and the biomechanical properties of commonly used internal fixation devices need to be further investigated. OBJECTIVE:To analyze the biomechanical characteristics of Pauwels Ⅲ femoral neck fractures treated with cannulated compression screw,dynamic hip screw,and femoral neck system by finite element method under different loading conditions of single-leg standing loads and sideways fall loads. METHODS:The DICOM data of healthy adult femur were obtained by CT scanning,imported into Mimics 15.0 software to obtain the rough model of bone tissue.The data exported from Mimics were optimized by Geomagics software,and then three internal fixation models were built and assembled with the femur model according to the parameters of the clinical application of the cannulated compression screw,dynamic hip screw,and femoral neck system by using Pro/E software.Finally,the three internal fixation models were imported into Ansys software for loading and calculation to analyze the stress distribution and displacement of the femur and the internal fixation under different working conditions of single-leg standing loads and sideways fall loads,as well as the stress characteristics of the calcar femorale and Ward's triangle. RESULTS AND CONCLUSION:(1)Under the single-leg standing load and the sideways fall load,the proximal femoral stress of the three internal fixation models was mainly distributed above the fracture end of the femoral neck.The peak stress of the proximal femoral end,fracture end,Ward triangle,and calcar femorale of the three internal fixation models were the smallest in the femoral neck system model and the largest in the cannulated compression screw model.(2)Under the single-leg standing load and the sideways fall load,the peak displacement of the proximal femur of the three internal fixation models was all located at the top of the femoral head,and the peak displacement was the smallest in the femoral neck system model and the largest in the cannulated compression screw model.(3)The peak displacement of the three internal fixation models was all located at the top of the internal fixation device under the single-leg standing and sideways fall loading conditions,and the peak displacement values were the smallest in the femoral neck system internal fixation model and the largest in the cannulated compression screw internal fixation model.(4)The internal fixation stress of the three internal fixation models was mainly distributed in the area near the fracture end of the internal fixation device under the single-leg standing and sideways fall loads,and the peak value of internal fixation stress was the smallest in the femoral neck system model and the largest in the cannulated compression screw model.(5)These results suggest that the mechanical stability of the femoral neck system is the best,but there may be a risk of stress shielding of the fracture end and calcar femorale.The stress of the internal fixation device of the femoral neck system is more dispersed,and the risk of internal fixation break is lower.
2.Improvement effect of metformin on liver injury in non-alcoholic steatohepatitis rats
Shuang WU ; Hailin CHENG ; Dan LIU ; Ting XIAO ; Xingbang WU ; Huadong LI ; Xudong HU
China Pharmacy 2025;36(7):837-842
OBJECTIVE To investigate the effects of metformin (Met) on liver injury in non-alcoholic steatohepatitis (NASH) rats by regulating the PI3K/AKT/PDGF signaling pathway. METHODS NASH model was constructed by feeding rats with a high- glucose and high-fat diet, and assigned into Model group, Met low-dose group (Met-L group, 100 mg/kg), Met medium-dose group (Met-M group, 200 mg/kg), Met high-dose group (Met-H group, 400 mg/kg), and high dose of Met+PI3K activator group (Met-H+740 Y-P group, 400 mg/kg Met+50 mg/kg 740 Y-P), with 12 rats in each group. Another 12 rats were regarded as the Control group. Each group of rats was orally administered/injected with the corresponding medication once a day for 6 consecutive weeks. The changes in body weight and liver index of rats were recorded and analyzed. The pathological damage [evaluation of non-alcoholic fatty liver disease activity score (NAS)], lipid deposition (calculation of the proportion of oil red O-positive staining area), and fibrosis (calculation of collagen deposition score) were observed in liver tissue of rats. The levels of inflammatory factors [interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α)] in serum and liver tissue, the levels of serum lipid metabolism indicators [total cholesterol (TC), triglyceride (TG), and low-density lipoprotein cholesterol (LDL-C)] and liver function indicators [aspartate aminotransferase (AST) and alanine Δ 基金项目 武汉市知识创新专项项目(No.2022020801010588); aminotransferase (ALT)] were measured. The expression levels of PI3K/AKT/PDGF signaling pathway-related proteins and Caspase-3 in liver tissue of rats were determined. RESULTS Compared with the Control group, body weight, liver index, the levels of serum lipid metabolism indicators and liver function indicators, the levels of IL-6 and TNF-α in serum and liver tissue, the NAS, the proportion of oil red O-positive staining area, the collagen deposition fraction, and the levels of phosphorylated PI3K and AKT proteins, as well as the expression levels of PDGF and Caspase-3 proteins in liver tissue, were all significantly increased (P<0.05). The liver tissue showed severe pathological damage, characterized by an abundance of lipid droplets and pronounced collagen deposition. After the intervention with Met, the aforementioned quantitative indicators and pathological changes in rats were significantly improved in a dose- dependent manner (P<0.05). 740 Y-P could reverse the improvement effects of high dose of Met on the above indexes of rats (P< 0.05). CONCLUSIONS Met can improve liver damage, and alleviate inflammatory reactions and liver fibrosis of NASH rats, the mechanism of which may be associated with inhibiting PI3K/AKT/PDGF signaling pathway.
3.Comparative Efficacy of Amiodarone and Lidocaine in Patients with Cardiac Arrest: A Systematic Review and Meta-analysis
Zhimao LI ; Dandi WANG ; Ting ZHANG ; Qimin MEI ; Yecheng LIU ; Huadong ZHU
Medical Journal of Peking Union Medical College Hospital 2025;16(2):406-415
To investigate the efficacy of amiodarone and lidocaine in cardiac arrest patients. We searched the PubMed, Embase, Cochrane Library, and Web of Science databases through to January 1, 2024. All studies comparing lidocaine, amiodarone, and placebo for cardiac arrest were included. Meta-analysis was performed, and the primary outcome was survival to hospital discharge. Secondary outcomes was survival to 24 h or hospital admission. Three RCTs and seven non-randomized intervention studies were included. Compared with placebo, amiodarone can improve the likelihood of survival to 24 h/hospital admission ( Limited RCTs directly compared amiodarone and lidocaine. No significant difference was found between amiodarone and lidocaine in improving 24 h/admission survival rate in RCTs. While compared to amiodarone and placebo, lidocaine can improve 24 h/admission survival rate and discharge survival rate in non-randomized intervention studies.
4.Exercise-induced angiogenesis and lymphangiogenesis: A potential therapeutic tool to fight aging and disease.
Jizong JIANG ; Yongjun ZHENG ; Rui WANG ; Hao YANG ; Shihui ZANG ; Emeli CHATTERJEE ; Guoping LI ; Dragos CRETOIU ; Cuimei ZHAO ; Junjie XIAO
Chinese Medical Journal 2025;138(20):2552-2587
Aging is an inevitable, physiological process of the human body, leading to deterioration in bodily function and increased susceptibility to various diseases. Effective endogenous therapeutic strategies for anti-aging and related diseases remain limited. Exercise confers multifaceted benefits to physical health by augmenting osteogenic and myogenic processes, enhancing cardiovascular and nervous system function, and attenuating chronic inflammation. Angiogenesis and lymphangiogenesis play pivotal roles in anti-aging, tissue repair, and immune response modulation, underscoring their potential as therapeutic targets for age-related diseases. Modulating angiogenic and lymphangiogenic pathways may provide a promising strategy for mitigating vascular decline and immune system dysfunction associated with aging. Exercise-induced endogenous angiogenesis and lymphangiogenesis can exert beneficial effects on physiological function, thereby representing a potential therapeutic paradigm for combating age-related decline and diseases. This review offers a thorough summary of the present knowledge regarding angiogenesis and lymphangiogenesis induced by exercise, encompassing the underlying mechanisms and the effects in different organs. In addition, it explores the potential of physical activity as a non-pharmacological intervention for anti-aging strategies and disease management, offering novel insights into the intersection of physical activity, aging, and disease progression.
Humans
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Lymphangiogenesis/physiology*
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Aging/physiology*
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Exercise/physiology*
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Animals
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Neovascularization, Physiologic/physiology*
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Angiogenesis
5.Targeting IRG1 in tumor-associated macrophages for cancer therapy.
Shuang LIU ; Lin-Xing WEI ; Qian YU ; Zhi-Wei GUO ; Chang-You ZHAN ; Lei-Lei CHEN ; Yan LI ; Dan YE
Protein & Cell 2025;16(6):478-483
6.Clinical practice guidelines for the diagnosis and treatment of atopic dermatitis with integrative traditional Chinese and Western medicine.
Xin-Ran DU ; Meng-Yi WU ; Mao-Can TAO ; Ying LIN ; Chao-Ying GU ; Min-Feng WU ; Yi CAO ; Da-Can CHEN ; Wei LI ; Hong-Wei WANG ; Ying WANG ; Yi WANG ; Han-Zhi LU ; Xin LIU ; Xiang-Fei SU ; Fu-Lun LI
Journal of Integrative Medicine 2025;23(6):641-653
Traditional Chinese medicine (TCM) is a well-accepted therapy for atopic dermatitis (AD). However, there are currently no evidence-based guidelines integrating TCM and Western medicine for the treatment of AD, limiting the clinical application of such combined approaches. Therefore, the China Association of Chinese Medicine initiated the development of the current guideline, focusing on key issues related to the use of TCM in the treatment of AD. This guideline was developed in accordance with the principles of the guideline formulation manual published by the World Health Organization. A comprehensive review of the literature on the combined use of TCM and Western medicine to treat AD was conducted. The findings were extensively discussed by experts in dermatology and pharmacy with expertise in both TCM and Western medicine. This guideline comprises 23 recommendations across seven major areas, including TCM syndrome differentiation and classification of AD, principles and application scenarios of TCM combined with Western medicine for treating AD, outcome indicators for evaluating clinical efficacy of AD treatment, integration of TCM pattern classification and Western medicine across disease stages, daily management of AD, the use of internal TCM therapies and proprietary Chinese medicines, and TCM external treatments. Please cite this article as: Du XR, Wu MY, Tao MC, Lin Y, Gu CY, Wu MF, Cao Y, Chen DC, Li W, Wang HW, Wang Y, Wang Y, Lu HZ, Liu X, Su XF, Li FL. Clinical practice guidelines for the diagnosis and treatment of atopic dermatitis with integrative traditional Chinese and Western medicine. J Integr Med. 2025; 23(6):641-653.
Dermatitis, Atopic/drug therapy*
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Humans
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Medicine, Chinese Traditional/methods*
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Integrative Medicine
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Drugs, Chinese Herbal/therapeutic use*
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Practice Guidelines as Topic
7.Factors related to medication adherence in patients with hypertension based on cross-sectional study strategy
Ruyi LI ; Jing YAO ; Zhihua SONG
Journal of Public Health and Preventive Medicine 2024;35(5):51-55
Objective To evaluate the relationship between perceived risk of complications of hypertension and medication adherence among patients with known hypertension. Methods Data were collected using a structured administrative questionnaire that mainly included information on basic demographic information, smoking history, access to healthcare services, duration of antihypertensive treatment, number of concurrent medications, and their perceived risk of complications related to hypertension. Morisk Medication Adherence Scale (MMAS-8) was used to measure the patients' antihypertensive medication adherence, and multivariate logistic regression analysis was used to identify independent factors related to adherence. Results Nearly half (48.8%) of the participants had uncontrolled hypertension, and more than one fifth (22.3%) of the patients had high adherence to antihypertensive medication. Independent factors highly associated with antihypertensive medication adherence were higher education level (OR:1.71, 95% CI: 1.06-2.75), never smoking (OR: 1.62 , 95% CI: 1.06-2.46), easy access to health care (OR: 1.91, 95% CI : 1.10-3.35), lower average treatment duration (OR: 0.96, 95% CI: 0.92-0.99), and higher perceived risk of hypertension-related complications (OR: 2.34 , 95% CI: 1.52-3.60). Conclusion High perceived risk of hypertension-related complications is significantly correlated with adherence to antihypertensive treatment.
8.Establishing a dose-response curve for 60Co γ-ray irradiation-induced micronuclei in human peripheral blood cells using artificial intelligence-based color recognition
Mengyun WU ; Wei LI ; Huadong ZHANG ; Fang YUAN ; Xiuhong TAN
Chinese Journal of Radiological Medicine and Protection 2024;44(1):7-12
Objective:To identify micronuclei through the cytochalasin B blocking micronucleus method-based assay using scanning microscope, combined with the slide scanning software Metafer 4 and, accordingly, to establish a dose-response relationship between the dose of 60Co γ-rays and the frequency of micronuclei in human peripheral blood lymphocytes using artificial intelligence-based color recognition. Methods:Blood samples were collected from four healthy individuals (two men and two women) and were then exposed to varying doses of 60Co γ-ray radiation (0, 0.25, 0.5, 1, 2, 3, 4, 5 Gy) at a dosage rate of 0.74 Gy/min. Micronucleus slides were prepared as per the GBZ 128-2023 standard. The numbers of binuclear cells and micronuclei were recorded using an artificial intelligence-based color recognition analysis system. The dose-response curve was determined through fitting using the CABAS software. Then, the doses to both independent samples were estimated based on the curve. Results:Within a dose range of 0 to 5 Gy, the fitted micronucleus dose-response curve aligned with a quadratic polynomial model, with a regression equation of y = 0.032 1 D2+ 0.023 7 D+ 0.012 7 ( D denoting the dose, correlation coefficient R2=0.998). The dose estimations from the validation samples closely corresponded to the actual irradiation doses. Conclusions:Establishing the micronucleus dose-response curve provides a feasible method and basis for the rapid and accurate estimation of radiation biological doses in laboratory automation.
9.Prediction of premature mortality of major chronic and non-communicable diseases and exploration of influencing factors in Anhui Province
Qin HE ; Yan ZHANG ; Xiuya XING ; Dan DAI ; Qianyao CHENG ; Wei XU ; Zhenqiu ZHA ; Rui LI ; Yeji CHEN ; Huadong WANG ; Zhirong LIU
Chinese Journal of Epidemiology 2024;45(5):700-707
Objective:To analyze and predict the future trend of the premature mortality of major chronic and non-communicable diseases in Anhui Province, evaluate the implementation of the "Healthy China 2030" Plan, and explore its influencing factors.Methods:Using data from death-cause surveillance and statistical yearbooks in Anhui, the trend prediction and analysis on influencing factors were conducted by using methods such as time series accumulation and logarithmic linear Joinpoint regression, principal component regression.Results:In Anhui, 28.10% of the deaths were premature ones, of which 84.40% were attributed to chronic and non-communicable diseases. In premature deaths attributed to chronic and non-communicable diseases, the deaths caused by malignant tumor and cardiovascular disease accounted for 45.88% and 41.65% respectively. The prediction results showed that the premature mortality of major chronic and non-communicable diseases would decrease in Anhui in the future, and by 2030, the goal in the "Healthy China 2030" Plan would be reached only in rural area. To reduce premature death, it is necessary to pay attention to the prevention and control of malignant tumor and cardiovascular disease. Men in urban area are the key population. Factors that reflect urban infrastructure had a significant impact on premature mortality of major chronic non-communicable diseases, such as garden and green space area per capita. Factors such as concentration of PM 2.5 had a negative impact on premature mortality of chronic non-communicable diseases, while factors such as garden and green space area per capita had a positive impact. Conclusions:Disease burden caused by chronic and non-communicable diseases, such as malignant tumor, exits in Anhui. Men in urban area are key population in the prevention and control of chronic and non-communicable diseases in the future.
10.The genetic and clinical features of MORC2 gene-related neuropathy in Chinese patients
Lin ZHOU ; Mengli WANG ; Wanqian CAO ; Shunxiang HUANG ; Huadong ZHAO ; Lu LI ; Sen ZENG ; Ruxu ZHANG
Chinese Journal of Neurology 2024;57(4):351-358
Objective:To summarize the genetic and phenotypic features of MORC family CW-type zinc finger 2 (MORC2) gene-related neuropathy in Chinese patients. Methods:The clinical and whole exome sequencing data of MORC2 gene-related neuropathy families with a definitive genetic diagnosis were collected from the Third Xiangya Hospital of Central South University between 2010 and 2023. Literature involving Chinese families with MORC2 gene-related neuropathy was extensively reviewed to provide a comprehensive summary of the genetic and phenotypic spectrum of the disease. Results:A total of 10 families with MORC2 gene-related neuropathy were identified and analyzed. Six different heterozygous pathogenic variants in the MORC2 gene were observed among these families, including the novel variant c.1330G>C (p.G444R) that had not been previously reported. Six families presented as axonal Charcot-Marie-Tooth disease caused by variants in the MORC2 gene (CMT2Z) phenotype with childhood or adult onset, and carried variants c.754C>T (p.R252W), c.1199A>G (p.Q400R), c.1330G>C (p.G444R), or c.1396G>A (p. D466N); 3 families manifested as severe spinal muscular atrophy (SMA)-like phenotype with infantile onset, all carried c.260C>T (p.S87L); 1 family carried c.1181A>G (p.Y394C), presented as DIGFAN syndrome phenotype with infantile onset combined with mental and motor retardation. Systematic review showed 8 Chinese families carried pathogenic variants of the MORC2 gene, among which 5 families were associated with the CMT2Z phenotype, carrying c.754C>T (p.R252W), c.1079A>G (p.E360G), c.1220G>A (p.C407Y), or c.1397A>G (p.D466G); 1 family was associated with SMA-like phenotype, carrying c.260C>T (p.S87L); and 2 families were associated with DIGFAN syndrome, carrying c.79G>A (p.E27K) and c.292G>A (p.G98R). Conclusions:A novel pathogenic variant c.1330G>C (p.G444R) of the MORC2 gene associated with the CMT2 phenotype is reported. Eleven pathogenic variants of the MORC2 gene have been reported in the Chinese patients to date, and c.754C>T(p.R252W) may be the most common. Patients with MORC2 gene-related neuropathy carrying different variants present with significant clinical heterogeneity, manifesting as CMT2Z, early-onset severe SMA-like myasthenia, or DIGFAN syndrome.


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