1.Mechanistic Study on Tougu Xiaotong Capsules in Regulating PANoptosis to Delay Degeneration of Chondrocytes in Knee Osteoarthritis
Jinxia YE ; Yixin LIN ; Xiaoqing LEI ; Yanfeng HUANG ; Changlong FU ; Desen LI ; Wenyi WANG ; Lan WANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(8):149-161
ObjectiveTo investigate the effect of Tougu Xiaotong capsules (TGXTC) on the regulation of chondrocyte PANoptosis, delay of chondrocyte degeneration, and improvement of the symptoms in knee osteoarthritis (KOA). MethodsIn vivo experiments: 50 male C57BL/6 mice were randomly assigned into five groups (n=10 per group): sham operation group, model group, low-dose TGXTC group (7.2 g·kg-1), high-dose TGXTC group (14.4 g·kg-1), and diclofenac sodium group (0.05 g·kg-1). Except for the sham group, KOA models were established in all other groups using the modified Hulth method. Following successful model induction, the TGXTC groups received daily oral gavage of 7.2 or 14.4 g·kg-1 for 6 weeks, while the diclofenac sodium group received 0.05 g·kg-1 solution daily over the same duration. Model evaluation was performed using Lequesne MG score; micro-computed tomography (micro-CT) was used to scan the knee, hematoxylin-eosin (HE) staining and safranin O-fast green staining were used to observe the morphology of cartilage, transmission electron microscopy (TEM) was used to determine ultrastructural changes of PANoptosis. Multiple immunofluorescence (IF) co-localization assays was performed to detect the co-localization of cleaved Caspase-3, receptor-interacting protein 3 (RlPK3), and the N-terminal domain of gasdermin D (GSDMD-N) in cartilage tissue, while western blot was employed to detect the expression levels of cleaved Caspase-3, RIPK3, and GSDMD-N. In vitro experiments: The knee cartilages of 4-week-old SD rats were isolated, and a chondrocyte in vitro culture system was established through mechanical digestion with 0.2% type Ⅱ collagenase. Second-generation chondrocytes were divided into three groups: the control group, the model group (pretreated with 10 mg·L-1 lipopolysaccharide (LPS) for 24 h followed by treatment with 1 μmol·L-1 nigericin for 4 h), and the TGXTC treatment group (pretreated with 10 mg·L-1 LPS for 24 h, followed by exposure to 1 μmol·L-1 nigericin for 4 h and subsequently treated with 100 mg·L-1 TGXTC for an additional 24 h). The levels of reactive oxygen species (ROS), apoptosis, necroptosis, and pyroptosis of chondrocytes were evaluated via fluorescence microscopy following staining with ROS detection, AO/EB and YO-PRO-1/PI staining kits. Transmission electron microscopy was utilized to investigate the ultrastructural changes associated with PANoptosis in cartilage tissue of KOA mice. Inflammatory cytokine levels (IL-1β and IL-18) were measured using ELISA. Western blot was conducted to assess protein expressions related to PANoptosis, including cleaved Caspase-3, cleaved Caspase-8, RIPK3, ZBP1, GSDMD-N, and NLRP3. ResultsCompared with the sham group, the Lequesne MG scores were significantly up-regulated(P<0.01) in the model group, and the pathological changes of cartilage were significantly, with joint spaces narrower, osteophyte formation increased, secere abrasion of cartilage surface. Ultrastructural analysis revealed pronounced chondrocyte apoptosis, necroptosis, and pyroptosis, along with markedly elevated expression of cleaved Caspase-3, RlPK3, and GSDMD-N in cartilage tissue (P<0.01). In addition, The mean fluorescence intensities of ROS, orange-red fluorescence in AO/EB staining, green fluorescence and red fluorescence in YO-PRO-1/PI staining were increased of chondrocyte in the model group (P<0.01) . The levels of inflammatory factors IL-1β and IL-18 in the supernatant were increased (P<0.01). The expression of PANoptosis related proteins (cleaved Caspase-3, cleaved Caspase-8, RIPK3, ZBP1, GSDMD-N, and NLRP3) were also significantly upregulated(P<0.05). Compared to the model group, the TGXTC group demonstrated a significant improvement in various parameters of mice. These included a reduction in the Lequesne MG score, an increase in joint space, a decrease in osteophyte formation, diminished cartilage damage, reduced release of ROS, and alleviation of apoptotic, necroptotic, and pyroptotic processes in chondrocytes. Additionally, mitochondrial swelling and endoplasmic reticulum dilation were also mitigated. The levels of ROS as well as IL-1β and IL-18 were significantly decreased (P<0.05). Furthermore, the expression levels of proteins associated with PANoptosis in cartilage tissue showed marked reductions (P<0.05). Similar results were observed in chondrocytes: cleaved Caspase-3, cleaved Caspase-8, RIPK3, ZBP1, GSDMD-N, and NLRP3 exhibited significant decreases as well (P<0.05). ConclusionTGXTC may mitigate chondrocytes degeneration and alleviate KOA symptoms by reducing oxidative stress and suppressing the activation of PANoptosis pathways.
2.Mechanistic Study on Tougu Xiaotong Capsules in Regulating PANoptosis to Delay Degeneration of Chondrocytes in Knee Osteoarthritis
Jinxia YE ; Yixin LIN ; Xiaoqing LEI ; Yanfeng HUANG ; Changlong FU ; Desen LI ; Wenyi WANG ; Lan WANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(8):149-161
ObjectiveTo investigate the effect of Tougu Xiaotong capsules (TGXTC) on the regulation of chondrocyte PANoptosis, delay of chondrocyte degeneration, and improvement of the symptoms in knee osteoarthritis (KOA). MethodsIn vivo experiments: 50 male C57BL/6 mice were randomly assigned into five groups (n=10 per group): sham operation group, model group, low-dose TGXTC group (7.2 g·kg-1), high-dose TGXTC group (14.4 g·kg-1), and diclofenac sodium group (0.05 g·kg-1). Except for the sham group, KOA models were established in all other groups using the modified Hulth method. Following successful model induction, the TGXTC groups received daily oral gavage of 7.2 or 14.4 g·kg-1 for 6 weeks, while the diclofenac sodium group received 0.05 g·kg-1 solution daily over the same duration. Model evaluation was performed using Lequesne MG score; micro-computed tomography (micro-CT) was used to scan the knee, hematoxylin-eosin (HE) staining and safranin O-fast green staining were used to observe the morphology of cartilage, transmission electron microscopy (TEM) was used to determine ultrastructural changes of PANoptosis. Multiple immunofluorescence (IF) co-localization assays was performed to detect the co-localization of cleaved Caspase-3, receptor-interacting protein 3 (RlPK3), and the N-terminal domain of gasdermin D (GSDMD-N) in cartilage tissue, while western blot was employed to detect the expression levels of cleaved Caspase-3, RIPK3, and GSDMD-N. In vitro experiments: The knee cartilages of 4-week-old SD rats were isolated, and a chondrocyte in vitro culture system was established through mechanical digestion with 0.2% type Ⅱ collagenase. Second-generation chondrocytes were divided into three groups: the control group, the model group (pretreated with 10 mg·L-1 lipopolysaccharide (LPS) for 24 h followed by treatment with 1 μmol·L-1 nigericin for 4 h), and the TGXTC treatment group (pretreated with 10 mg·L-1 LPS for 24 h, followed by exposure to 1 μmol·L-1 nigericin for 4 h and subsequently treated with 100 mg·L-1 TGXTC for an additional 24 h). The levels of reactive oxygen species (ROS), apoptosis, necroptosis, and pyroptosis of chondrocytes were evaluated via fluorescence microscopy following staining with ROS detection, AO/EB and YO-PRO-1/PI staining kits. Transmission electron microscopy was utilized to investigate the ultrastructural changes associated with PANoptosis in cartilage tissue of KOA mice. Inflammatory cytokine levels (IL-1β and IL-18) were measured using ELISA. Western blot was conducted to assess protein expressions related to PANoptosis, including cleaved Caspase-3, cleaved Caspase-8, RIPK3, ZBP1, GSDMD-N, and NLRP3. ResultsCompared with the sham group, the Lequesne MG scores were significantly up-regulated(P<0.01) in the model group, and the pathological changes of cartilage were significantly, with joint spaces narrower, osteophyte formation increased, secere abrasion of cartilage surface. Ultrastructural analysis revealed pronounced chondrocyte apoptosis, necroptosis, and pyroptosis, along with markedly elevated expression of cleaved Caspase-3, RlPK3, and GSDMD-N in cartilage tissue (P<0.01). In addition, The mean fluorescence intensities of ROS, orange-red fluorescence in AO/EB staining, green fluorescence and red fluorescence in YO-PRO-1/PI staining were increased of chondrocyte in the model group (P<0.01) . The levels of inflammatory factors IL-1β and IL-18 in the supernatant were increased (P<0.01). The expression of PANoptosis related proteins (cleaved Caspase-3, cleaved Caspase-8, RIPK3, ZBP1, GSDMD-N, and NLRP3) were also significantly upregulated(P<0.05). Compared to the model group, the TGXTC group demonstrated a significant improvement in various parameters of mice. These included a reduction in the Lequesne MG score, an increase in joint space, a decrease in osteophyte formation, diminished cartilage damage, reduced release of ROS, and alleviation of apoptotic, necroptotic, and pyroptotic processes in chondrocytes. Additionally, mitochondrial swelling and endoplasmic reticulum dilation were also mitigated. The levels of ROS as well as IL-1β and IL-18 were significantly decreased (P<0.05). Furthermore, the expression levels of proteins associated with PANoptosis in cartilage tissue showed marked reductions (P<0.05). Similar results were observed in chondrocytes: cleaved Caspase-3, cleaved Caspase-8, RIPK3, ZBP1, GSDMD-N, and NLRP3 exhibited significant decreases as well (P<0.05). ConclusionTGXTC may mitigate chondrocytes degeneration and alleviate KOA symptoms by reducing oxidative stress and suppressing the activation of PANoptosis pathways.
3.Lightweight end-to-end model-based korotkoff sounds phase identification and blood pressure measurement
Zhiyu JIANG ; Wenyi KOU ; Li LI ; Qijun ZHAO ; Yongjun QIAN ; Fan PAN
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2026;33(02):248-254
Objective To propose a lightweight end-to-end neural network model for automated Korotkoff sound phase recognition and subsequent blood pressure (BP) measurement, aiming to improve measurement accuracy and population adaptability. Methods We developed a streamlined architecture integrating depthwise separable convolution (DSConv), multi-head attention (MHA), and bidirectional gated recurrent unit (BiGRU). The model directly processes Korotkoff sound time-series signals to identify auscultatory phases. Systolic BP (SBP) and diastolic BP (DBP) were determined using phase Ⅰ and phaseⅤdetections, respectively. Given the clinical relevance of phase Ⅳ for specific populations (e.g., children and pregnant women, denoted as DBPⅣ), BP values from this phase were also recorded.Results The study enrolled 106 volunteers with 70 males and 36 females at mean age of (40.0±12.0) years. The model achieved 94.25% phase recognition accuracy. Measurement errors were (0.1±2.5) mm Hg (SBP), (0.9±3.4) mm Hg (DBPⅣ), and (0.8±2.6) mm Hg (DBP). Conclusion Our method enables precise phase recognition and BP measurement, demonstrating potential for developing population-adaptive blood pressure monitoring systems.
4.Epidemiological characteristics and prediction of incidence trend of hepatitis E in Huai'an City in 2015-2024
Wenling XIA ; Hongbo ZHANG ; Yang LI ; Ben CAI ; Wenyi ZHANG ; Chunyu WAN ; Qiang GAO
Journal of Public Health and Preventive Medicine 2026;37(4):26-30
Objective To analyze the epidemiological characteristics of hepatitis E (HE) in Huai'an City from 2015 to 2024, and construct and validate the prediction effect of the Seasonal Autoregressive Integrated Moving Average (SARIMA) model, and to provide a scientific basis for HE prevention and control. Methods Data of reported HE cases in Huai'an City from January 2015 to December 2024 were extracted from the National Disease Control and Prevention Information System. Descriptive epidemiological methods were used to analyze the temporal, regional and population distribution characteristics of HE incidence. After data preprocessing, stationarity test and randomness test, the SARIMA model was constructed. The optimal model was selected by minimizing the Akaike Information Criterion (AIC). The model performance was evaluated by adjusted R-squared (Adj R2) and root mean square error (RMSE). The monthly incidence rate of HE in Huai'an City in 2025 was predicted and compared with the actual incidence data to validate the model. Results A total of 1 713 HE cases were reported in Huai'an City from 2015 to 2024, showing a fluctuating upward trend. Huaiyin District (339 cases) and Lianshui County (334 cases) were high-incidence areas. The cases were mainly concentrated in people aged 45 and above (83.3%), males (gender ratio 2.37:1) and farmers (70.8%). The optimal model was SARIMA (1,1,1)×(2,0,1)12, with residual as white noise sequence. There was no statistical difference between the actual incidence and predicted value from January to August 2025 (P>0.05). Conclusion HE incidence in Huai'an has obvious aggregation and temporal fluctuation characteristics. The SARIMA model has a good prediction effect, which can provide reference for formulating targeted prevention and control strategies.
5.Study on changes and correlations of color,components and anti-tumor activity of processed products of Gelsemium elegans at different sand-frying durations
Hao WU ; Lisong CHEN ; Chenglong HUANG ; Yueling WANG ; Lirong CHEN ; Wenyi WANG ; Yinghao WANG ; Desen LI ; Shuisheng WU ; Ying CHEN
China Pharmacy 2026;37(17):2258-2263
OBJECTIVE To explore the changes and correlations of color, components and anti-tumor activity of Gelsemium elegans during sand-frying processing, so as to provide a reference for the toxicity-attenuating and efficacy-preserving processing as well as quality control of sand-fried G. elegans decoction pieces.METHODS Raw G.elegans and its processed products prepared by sand-frying for 15, 30, 75, 105 and 120 s were taken as test samples. The chromatic values, contents of total alkaloids and seven main active components (gelsemine, humantenine, koumine, gelsenicine, etc.) were determined. Their in vitro anti-tumor activity was investigated. The correlations between color and component contents, as well as between total alkaloid content and anti-tumor activity were analyzed.RESULTS The color of G.elegans samples generally darkened after sand-frying, and the total color difference (Δ E * ) of samples sand-fried for 75 s was greater than 20. At the initial stage of sand-frying (15-30 s), the total alkaloid content in processed products decreased sharply compared with the raw material; at the later-stage of sand-frying (75-105 s), the declining rate of total alkaloid content slowed down and tended to be stable. The contents of gelsenicine and humantenidine in processed products dropped drastically at 30 s of sand-frying, while the contents of koumine and sempervirine decreased substantially (by about 80%) after 75 s of sand-frying and then gradually tended to be stable. The anti-HepG2 cell proliferation activity of each processed product decreased with the extension of frying time. Correlation analysis demonstrated that color brightness and yellow-blue chromaticity were significantly positively correlated with the contents of total alkaloids and all determined active components except gelsemine ( P <0.05 or P <0.01); red-green chromaticity was significantly positively correlated with the contents of koumine, sempervirine, gelsemivirine and humantenidine ( P <0.05 or P <0.01); Δ E * was significantly negatively correlated with the contents of total alkaloids and all determined active components except gelsemine. Besides, total alkaloid content was significantly negatively correlated with the half maximal inhibitory concentration of the samples on HepG2 cells ( P <0.05 or P <0.01).CONCLUSIONS With the prolongation of sand-frying time, the color of sand-fried G.elegans decoction pieces gradually turned brownish-brown, the contents of seven active components and total alkaloids decreased progressively, and its anti-HepG2 cell activity showed an overall downward trend. Sand-frying for 75 s serves as a critical turning-point for the above-mentioned changes.
6.Analysis of the Theory of "Spirit Turns but Does Not Reverse;If It Reverses,It Ceases to Turn" in The Inner Canon of Yellow Emperor (《黄帝内经》) and Its Clinical Significance
Bin PENG ; Wenyi LUO ; Bing LI ; Shengxing WANG ; Ziling ZENG ; Lin TONG ; Huamin ZHANG
Journal of Traditional Chinese Medicine 2026;67(19):2139-2143
"Spirit turns but does not reverse; if it reverses, it ceases to turn" originates from the Plain Questions: Discussion on Essential Jade Plates (《素问·玉版论要篇》). It profoundly summarizes the objectivity of life as a phenomenon subject to the laws of the universe and nature, while also expressing the subjectivity of individuals possessing systematic, stable, and ordered biological rhythms. In light of relevant ancient philosophical insights, the theory of "spirit turns but does not reverse; if it reverses, it ceases to turn" embodies the principles of constant motion in life, change according to dao (道), orderly progression, and the rule that reversal disrupts continuity. In clinical diagnosis and treatment, one should adopt the therapeutic principle of regulating spirit to promote "spirit turning". Guiding along the trend and acting in accordance with the natural momentum must be adopted to maintain the operation of spirit turning. Adhering to constancy while recognizing variability, and prioritizing harmony above all, should be employed to ensure the orderly progress of spirit turning. Regulating qi movement serves as the driving force behind facilitating spirit turning. This will provide clinical insights and theoretical foundations for treating diseases through the concept of "regulating spirit".
7.Analysis of the Theory of "Spirit Turns but Does Not Reverse;If It Reverses,It Ceases to Turn" in The Inner Canon of Yellow Emperor (《黄帝内经》) and Its Clinical Significance
Bin PENG ; Wenyi LUO ; Bing LI ; Shengxing WANG ; Ziling ZENG ; Lin TONG ; Huamin ZHANG
Journal of Traditional Chinese Medicine 2026;67(19):2139-2143
"Spirit turns but does not reverse; if it reverses, it ceases to turn" originates from the Plain Questions: Discussion on Essential Jade Plates (《素问·玉版论要篇》). It profoundly summarizes the objectivity of life as a phenomenon subject to the laws of the universe and nature, while also expressing the subjectivity of individuals possessing systematic, stable, and ordered biological rhythms. In light of relevant ancient philosophical insights, the theory of "spirit turns but does not reverse; if it reverses, it ceases to turn" embodies the principles of constant motion in life, change according to dao (道), orderly progression, and the rule that reversal disrupts continuity. In clinical diagnosis and treatment, one should adopt the therapeutic principle of regulating spirit to promote "spirit turning". Guiding along the trend and acting in accordance with the natural momentum must be adopted to maintain the operation of spirit turning. Adhering to constancy while recognizing variability, and prioritizing harmony above all, should be employed to ensure the orderly progress of spirit turning. Regulating qi movement serves as the driving force behind facilitating spirit turning. This will provide clinical insights and theoretical foundations for treating diseases through the concept of "regulating spirit".
8.A Multimodal Deep Learning Model Integrating Clinical and Ultrasound Imaging Data for grading steatotic liver disease
Wenyi MENG ; Xinrui YAO ; Renjie LI ; Jianqing PENG ; Zuofeng XU
Journal of Sun Yat-sen University(Medical Sciences) 2026;47(3):528-538
ObjectiveThis study aimed to construct a neural network model integrating readily available clinical data and two-dimensional (2D) conventional ultrasound images to evaluate the severity of steatotic liver disease (SLD). MethodsClinical data and ultrasound images were retrospectively collected from 649 patients who underwent ultrasound attenuation imaging (ATI). Using ATI as the reference standard, patients were divided into four groups: normal (S0), mild (S1), moderate (S2), and severe (S3) SLD. Data were randomly divided into training and validation sets at an 8∶2 ratio. A contrastive language-image pre-training (CLIP) model was utilized to extract features from both clinical and imaging data, which were then used to train random forest (RF) and multilayer perceptron (MLP) models. The diagnostic performance of these multimodal models was compared their single-modal counterparts in the validation set. ResultsThe MLP model outperformed the RF model (AUC[95%CI]: S0 = 0.96 [0.93-0.99], S1 = 0.99 [0.96-1.00], S2 = 0.75 [0.64-0.82], S3 = 0.88 [0.81-0.93]). Furthermore, the multimodal fusion model demonstrated significantly superior performance compared to single-modal models (clinical data only: AUC[95%CI] of 0.89 [0.81-0.95], 0.69 [0.52-0.79], 0.64 [0.43-0.67] and 0.80 [0.73-0.90] for S0-S3, respectively; image data only: AUC[95%CI] of 0.91 [0.86-0.96], 0.89 [0.67-0.89], 0.69 [0.58-0.78] and 0.86 [0.82-0.94]). Metrics including precision, recall, F1-score, F2-score, confusion matrices, and loss function learning curves further confirmed that multimodal data fusion significantly improved the predictive capability. ConclusionThe proposed CLIP-based MLP multimodal model can effectively and automatically grade SLD severity. This demonstrates the significant advantage of integrating clinical and ultrasound data, providing an accurate and reliable adjunctive tool for the clinical management of chronic SLD.
9.The association between unhealthy lifestyle and depressive symptoms, anxiety symptoms, and stress among secondary school students in Jiangsu Province
Wenyi YANG ; Yan WANG ; Xiyan ZHANG ; Peixuan LI ; Xin WANG ; Yiliang XIN ; Tianjiao CHEN ; Jie YANG
Chinese Journal of Preventive Medicine 2025;59(2):181-188
Objective:To analyze the association between unhealthy lifestyles and depressive symptoms, anxiety symptoms and stress among secondary school students in Jiangsu Province.Methods:From September to November 2023, a multistage stratified cluster random sampling method was used to select secondary school students from 13 districts and cities in Jiangsu Province. A questionnaire survey was conducted on their unhealthy lifestyles (low physical activity, smoking, drinking, internet addiction, poor sleep quality, and unhealthy diet), as well as their depressive symptoms, anxiety symptoms and stress. The multivariate logistic regression model and mixed graph model were used to construct a network and analyze the association between unhealthy lifestyles and depressive symptoms, anxiety symptoms and stress.Results:A total of 81 414 secondary school students were finally included in this study, including 39 725 (48.79%) female students and 41 689 (51.21%) male students. The prevalence of depressive symptoms, anxiety symptoms and stress were 18.55%, 32.09% and 12.91%, respectively. The multivariate logistic regression model showed that after adjusting for age, gender, urban-rural status, residential status, and family type, compared with students without unhealthy lifestyles, students with low physical activity, smoking, alcohol consumption, internet addiction, poor sleep quality, and unhealthy diet had a significantly increased risk of depressive symptoms ( OR=1.12, 95% CI:1.07-1.17; OR=1.60, 95% CI: 1.49-1.72; OR=1.79, 95% CI: 1.71-1.88; OR=3.05, 95% CI: 2.77-3.36; OR=6.66, 95% CI: 6.40-6.93; OR=1.29, 95% CI: 1.24-1.34) and a significantly increased risk of anxiety symptoms ( OR=1.09, 95% CI: 1.05-1.13; OR=1.42, 95% CI: 1.33-1.52; OR=1.76, 95% CI: 1.69-1.83; OR=2.40, 95% CI: 2.17-2.65; OR=5.79, 95% CI: 5.59-6.00; OR=1.16, 95% CI: 1.12-1.21). Students who smoked, drank alcohol, had internet addiction, and had poor sleep quality had a significantly increased risk of stress ( OR=1.49, 95% CI: 1.38-1.61; OR=1.79, 95% CI: 1.70-1.89; OR=2.25, 95% CI: 2.04-2.48; OR=6.74, 95% CI: 6.43-7.06). The node with poor sleep quality (bridge strength=0.48) in the network constructed by the mixed graph model had the strongest centrality of the bridge connecting unhealthy lifestyles with depressive symptoms, anxiety symptoms and stress. Conclusion:Low physical activity, smoking, alcohol consumption, internet addiction, poor sleep quality, and unhealthy diet increase the risk of depressive symptoms and anxiety symptoms among Jiangsu Province secondary school students. Smoking, alcohol consumption, internet addiction, and poor sleep quality increase the risk of stress among Jiangsu Province secondary school students. Sleep quality is an important intervention target for Jiangsu Province secondary school students to alleviate their negative emotions.
10.Sarcopenic obesity and mortality risk in nursing home residents: a prospective cohort study based on six obesity indicators
Xiaoyan CHEN ; Mei LI ; Sha HUANG ; Shuyue LUO ; Wenyi ZHANG ; Wenhua JIANG ; Ming YANG
Chinese Journal of Geriatrics 2025;44(7):943-950
Objective:To investigate the relationship between sarcopenic obesity(SO), defined by various obesity indicators, and mortality risk in older adults based on a prospective cohort from multiple nursing homes.Methods:Sarcopenia was diagnosed according to the 2019 consensus of the Asian Working Group for Sarcopenia.Obesity was defined using six different indicators: waist circumference(WC), waist-hip ratio(WHR), waist-height ratio(WHTR), body mass index(BMI), visceral fat area(VFA), and percentage of body fat(PBF).A prospective cohort of adults aged 60 and above was established across 15 nursing homes in Zigong City, with annual follow-ups on survival status conducted over two consecutive years.Cox proportional hazards regression models were employed to analyze the association between SO, defined by different obesity indicators, and mortality risk, calculating hazard ratios( HR)and their 95% confidence intervals( CI). Results:A total of 695 older adults were included in the study, of whom 67.1% were male.During the 2-year follow-up period, 88 participants died.The prevalence of SO as defined by WC, WHR, WHTR, BMI, VFA, PBF was found to be 17.6%, 30.1%, 48.9%, 3.0%, 28.3%, and 58.7%, respectively.When SO was defined using WC, WHR, WHTR, BMI, and VFA, there was no statistically significant difference in mortality rates between the SO and non-SO groups.However, when defined by PBF, the SO group exhibited a significantly higher mortality rate compared to the non-SO group(16.9% vs.6.6%, P<0.01).Cox proportional hazards regression analysis revealed that, compared to the non-SO group, the SO group defined by PBF had a significantly increased mortality risk( HR=2.81, 95% CI: 1.67-4.73, P<0.001).After adjusting for potential confounding factors, the mortality risk for the SO group remained significantly higher than that of the non-SO group( HR=1.97, 95% CI: 1.14-3.38, P=0.015). Conclusions:The prevalence of SO varies significantly across different obesity indicators.SO defined by PBF is significantly associated with mortality risk in nursing home residents.This study provides new evidence for further optimizing the diagnostic criteria for SO in this population.


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