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  • Xi WANG, Ya-cui LUO, Hai-jun ZHANG
    Modern Preventive Medicine. 2024, 51(14): 2662-2668.
    Objective

    To investigate the pollution status of lead, cadmium, total mercury, total arsenic, total chromium, manganese, nickel, aluminum, copper on sale vegetables in Taizhou City, and to assess the health risks to people.

    Methods

    According to the requirements of relevant national standards, detect the contents of metals and metalloids in four types of commercial vegetable samples collected from 2019 to 2023. The pollution status evaluated by single factor pollution index (Pi) and Nemerow composite pollution index (PM) method, the health risks were evaluated by both target hazard quotient (THQ)and total target hazard quotient (TTHQ).

    Results

    A total of 419 samples of four types of vegetables were collected, manganese and copper had the highest detection rate with both of 100.0%, the others from high to low were nickel (89.17%)>aluminum (87.26%)>cadmium (85.20%)>total arsenic (52.03%)>lead (35.32%)>total chromium (30.55%)>total mercury (2.39%). The overall cadmium exceeding rate was 2.63% and all concentrated in root vegetables, the other elements did not exceed the limit. The Pi and PM of lead, cadmium, total mercury, total arsenic, total chromium in different types of vegetables were all did not exceed 0.7. The TTHQ of four types of vegetables for adults were all less than 1.0, but the TTHQ were more than 1.0 while children consumed root and leafy vegetables.

    Conclusion

    The overall pollution levels of nine metals and metalloids in four categories of vegetables in Taizhou city were low, and the health risk level of these metals and metalloids in residents was acceptable. However, intake of root and leafy vegetables may have negative effects on human health in children.

  • Yi-rong LIU, Yue REN, Yang QIN, Shu-qi WU, Jin-fang ZHAO, Tian-e LUO
    Modern Preventive Medicine. 2024, 51(14): 2669-2674.
    Objective

    To explore the application of integrated clustering methods in identifying low-grade glioma subtypes and prognostic prediction.

    Methods

    A comprehensive clustering algorithm (MOVICS), which pools ten clustering algorithms, was used to integrate the multi-omics data of LGG patients downloaded from TCGA to obtain cluster subtypes; prognostic factors of LGG were analyzed by multifactorial Cox regression. A random forest classification prediction model was constructed using mRNA data to evaluate the classification performance and externally validated with the CGGA dataset.

    Results

    LGG patients were clustered into two subtypes, and the difference in survival between the two groups was statistically significant (χ2=54.410, P<0.001). The results of multifactorial Cox regression analysis showed that age (HR=1.053,95%CI: 1.037-1.069), cancer grade (HR=2.733,95%CI: 1.836-4.069) and cluster typing (HR=3.210,95%CI: 2.216-4.650) were all prognostic factors for LGG, and the results of Nomogram plots, calibration curves and ROC curves indicated good predictive performance of the model. The average prediction accuracy of the ten-fold cross-validated RF model was 87.81%, and the C-indexes of the training set, the internal validation set, and the two external validation sets were 0.717, 0.721, 0.574, and 0.572, and the Brier scores were 0.044, 0.066, 0.179, and 0.128, and the differences in the survival of the two external validation datasets were all statistically significance (P<0.05).

    Conclusion

    The comprehensive clustering method can effectively identify LGG subtypes, which are prognostic factors for LGG patients, and has been validated in an external dataset, CGGA, which can provide an important theoretical basis for clinical personalized treatment of LGG.

  • Fang YAN, Mao-rong ZHANG, Zhao YANG, Lan SHEN, Wei YANG, Yun-tao LI
    Modern Preventive Medicine. 2024, 51(14): 2675-2682.
    Objective

    To understand the Prevalence of abnormal glucose metabolism and its influencing factors in Kunming, and to provide scientific basis for the prevention and treatment of diabetes.

    Methods

    From August to November 2020, 6332 eligible residents from 32 administrative villages/neighborhood committees in 4 counties (districts) of Kunming City were selected as survey subjects, physical examinations, and laboratory tests. Multivariate logistic regression was used to analyze the influencing factors of abnormal glucose metabolism.

    Results

    The prevalence of abnormal glucose metabolism in adults in Kunming was 26.93% (PDM 12.86%, diabetes 14.07%). Multivariate logistic regression analysis showed that ≥60 years old (OR=2.408, 95%CI:1.468-3.951), overweight (OR=1.348, 95%CI:1.063-1.709), central obesity (OR=1.740, 95%CI:1.374-2.203), hypertension (OR=1.301, 95%CI:1.020-1.660) and dyslipidemia (OR=1.407, 95%CI:1.160-1.706) were associated with the risk of PDM. 40-49 years old (OR=3.230,95%CI:1.942-5.373), 50 - 59 years old (OR=5.229,95%CI:3.229-8.467),≥60 years old (OR=8.924,95%CI:5.515-14.438), low body weight (OR=1.065,95%CI:1.032-2.498), obesity (OR=1.540,95%CI:1.180-2.009), central obesity (OR=1.565, 95%CI:1.288-1.901), hypertension (OR=1.482, 95%CI:1.264-1.737) and dyslipidemia (OR=1.677, 95%CI:1.437-1.958). Family history of diabetes (OR=3.926, 95%CI:3.179-4.850) and insufficient physical activity (OR=1.473, 95%CI:1.259-1.725) were associated with the risk of diabetes. Physical labor (OR=0.581, 95%CI:0.387-0.873) was associated with a lower risk of diabetes mellitus. There were statistically significant.

    Conclusion

    The prevalence of abnormal glucose metabolism in adult residents of Kunming City is high. Age, overweight and obesity, history of hypertension and dyslipidemia, family history of diabetes, and lack of physical activity are risk factors for abnormal glucose metabolism. Prevention and control should be focused on these factors.

  • Lun LIU, Yun ZENG, Pei KOU, Xiao-na KUANG
    Modern Preventive Medicine. 2024, 51(14): 2683-2688.
    Objective

    To assess the disease burden of migraine in China from 1990 to 2019 and predict the changing trends in disease burden from 2020 to 2030, which may provide reliable data support for public health decision-making.

    Methods

    The study utilized data from the Global Burden of Disease 2019 (GBD2019) database and analyzed the age-standardized incidence rate (ASIR) and age-standardized DALY rate of migraine in China from 1990 to 2019. Estimation of annual percentage change (EAPC) models and Bayesian age-period-cohort (BAPC) analysis methods were employed to reveal changes and trends.

    Results

    From 1990 to 2019, both the ASIR and age-standardized DALY rate of migraine in China showed an upward trend, with EAPCs of 0.24% (95%CI: 0.20%-0.29%) and 0.27% (95%CI: 0.22%-0.32%), respectively. The highest ASIR for migraine was observed in the age group of 10-15 years, followed by a fluctuating decline, and then an increase in ASIR in the 25-30 age group. The age-standardized DALY rate peaked in the 40-45 age group. Disease burden indicators for females exceeded those for males during the same period. According to the BAPC model predictions, the ASIR for migraine in the entire population of China was expected to increase from 2020 to 2030, with an annual growth rate of 0.88%. The annual growth rates of ASIR for males and females were projected to be 1.21% and 0.64%, respectively.

    Conclusion

    The burden of migraine in China remains quite severe, and there should be a focus on adolescents and young to middle-aged populations. Customized prevention and intervention strategies are crucial for high-risk populations of different ages and genders.

  • Shan XU, Shu-ying ZHANG, Wen-han XIE, Ke-xin LING, Yan-fang TAN, Xiang-tong LIU
    Modern Preventive Medicine. 2024, 51(12): 2113-2120.
    Objective

    To investigate the association between lifestyle and the incidence and development trajectory of cardiometabolic multimorbidity.

    Methods

    Based on the China Health and Retirement Longitudinal Study(CHARLS) from 2011 to 2020, a total of 8 202 individuals aged 45 years and older were included. A Multi-state Markov model (MSM) was applied to analyze the effects of lifestyle on the trajectories of cardiometabolic multimorbidity.

    Results

    The disease progression trajectories mainly involved transitions from health to first cardiometabolic diseases (FCMD), health to cardiometabolic multimorbidity (CMM) and FCMD to CMM. During the follow-up period, 2 962 participants developed FCMD, 687 participants developed CMM, and 699 participants died. The results indicated that transitioning from health to FCMD, being overweight or obese, having longer nighttime sleep duration, and lacking a habit of daytime naps were positively associated with FCMD, which were 1.40(95%CI: 1.30-1.52) times, 1.16(95%CI: 1.02-1.32) times, and 1.21(95%CI: 1.06-1.39) times higher than those of healthy lifestyle people, respectively. During the transition from health to CMM, being overweight or obese was positively associated with the increased incidence of CMM (HR=1.42,95%CI: 1.06-1.90). Transitioning from FCMD to CMM, only overweight or obesity was observed as a risk factor (HR=1.44,95%CI: 1.17-1.78).

    Conclusion

    Lifestyle may increase the risk of cardiometabolic diseases and multimorbidity, emphasizing the importance of lifestyle interventions in health management practices.

  • Zhi-yu CHEN, Zhen LIU, Jia-yuan ZHOU, Yu-yang GAO, Wen-li XU, Li DAI, Wen-yan LI
    Modern Preventive Medicine. 2024, 51(12): 2121-2126.

    Multiple birth defects, also known as multiple congenital anomalies (MCAs), are defined as the simultaneous presence of defects in two or more different systems, organs or tissues in the same individual. MCAs account for 20% to 30% of all children with birth defects and have become an important public health issue in the prevention and control of birth defects. MCAs can occur as random events or as etiologically related patterns of abnormal. Identifying MCAs patterns can provide important clues for revealing the underlying aetiology, elucidating the mechanism, predicting the development trend, and formulating strategiesforprevention and treatment. Currently, there are many methods for assessing the pattern of MCAs, and each calculation method has its own advantages and disadvantages. In this study, we reviewed five commonly used statistical analysis methods for evaluating the pattern of MCAs, including the proportion method, multiple regression analysis, cluster analysis, log-linear analysis, and O/E (Observed/Expected) ratio. Moreover, we elaborated on their applications, strengths, and limitations in the birth defects surveillance system. Given the large birth defects surveillance system and rich data resources in China, which provides good conditions for MCAs research, the current review of the MCAs analysis methods is of great significance for making full use of these resources to conduct related research.

  • Li-hua LIANG, Yu-bing YUAN, Li LI
    Modern Preventive Medicine. 2024, 51(12): 2127-2132.
    Objective

    To analyze the causal relationships between basal metabolic rate(BMR) and frailty index (FI) based on bidirectional two-sample mendelian randomization(MR).

    Methods

    The data of BMR (n=454 874) and FI (n=175 226) were extracted from the published genome-wide association studies (GWAS). By setting conditions with P<5×10-8 as the screening criterion, the linkage disequilibrium coefficient set to 0.001 and the width of the linkage disequilibrium region of 10 000 kb, and single nucleotide polymorphisms (SNP) were screened out as the final instrumental variables. Five methods including MR-Egger regression, weighted median, Inverse variance weighted (IVW), simple mode and weighted mode were used for MR analysis, and IVW was used as the main analysis method, and β and 95%CI were used to demonstrate the causal relationship between BMR and FI. MR-Egger intercept and MR-PRESSO analysis were used to test the pleiotropy, and the heterogeneity was analyzed by Cochran Q test of MR-Egger. Leave-one-out test were performed to analyze the sensitivity. Finally, reverse MR analysis was used to verify the robustness of the results.

    Results

    A total of 787 SNPs associated with BMR and 9 SNPs associated with FI were screened. The MR analysis showed a causal relationship between BMR and FI(Weighted median, β=0.105, 95%CI: 0.063-0.146, P<0.001; IVW, β=0.110, 95%CI: 0.808-0.140, P<0.001; weighted mode, β=0.145, 95%CI: 0.047-0.244, P=0.004). The screened SNPs did not have horizontal pleiotropy because the the MR-Egger intercept was 0.000 2 (P=0.374), Therefore, the MR was an effective method for causal inference in this study. The Cochran Q-test results showed Q=137.053, P=0.188, indicating no heterogeneity among the SNPs included in the MR analysis. And no outlier SNPs were found by MR-PRESSO analysis. The sensitivity analysis based on the leave-one-out method showed that the individual SNP did not affect the robustness of the MR analysis results. No causal relationship between FI and BMR was found in the reverse MR analysis(P>0.05).

    Conclusion

    Genetically predicted high BMR level is significantly associated with elevated FI, and there is no association in reverse direction, which may provide fresh ideas for proposing feasible interventions to manage frailty.

  • Qiao LIU, Qiao-ling YANG, Ya-juan DUAN, Lu HAN, Qin-qin XIE, Li CHENG
    Modern Preventive Medicine. 2024, 51(12): 2133-2139.
    Objective

    To investigate heterogeneous trajectory of sarcopenia and its associated factors among older adults with multimorbidity.

    Methods

    Based on the Asian Working Group for Sarcopenia 2019 Consensus, three waves of data in 2011, 2013, and 2015 from the China Health and Retirement Longitudinal Study were utilized. Latent growth mixture model and multinomial logistic regression were selected to identify heterogeneous sarcopenia trajectories and associated factors among older adults with multimorbidity.

    Results

    Of the 1 254 participants, four heterogeneous trajectories of sarcopenia were identified: high initial but sharply declining trajectory (7.5%,n=93), low and stable change trajectory (64.0%, n=803), high and stable change trajectory (23.5%, n=295), low initial but sharply increasingtrajectory (5.0%, n=63). Disability, body mass index (BMI), cognition, sleep duration, smoking habits, and alcohol consumption were associated with different sarcopenia trajectories.

    Conclusion

    There are heterogenous sarcopenia trajectories among older adults with multimorbidity, targeted intervention regarding disability, BMI, cognition, sleep, smoking, and drinking should conducted to prevent sarcopenia.

  • Wei LIANG, Ying LU, Xiao-xiao ZHANG, Xin GONG
    Modern Preventive Medicine. 2024, 51(12): 2140-2145.
    Objective

    To assess the potential causal relationship between gut microbiota and the risk of uterine fibroids using a Mendelian randomization approach.

    Methods

    We used the genome-wide association study (GWAS) statistics of gut microbiota published by the Netherlands Microbiome Project in 2022 (n=7 738) and the GWAS data of uterine fibroids from the Finnish R9 database (31 661 uterine fibroid patients and 179 209 controls). Inverse variance weighting (IVW), MR-Egger regression and weighted median method were used to study the causal relationship between intestinal flora and uterine fibroids. Sensitivity analyses were performed to test the reliability of the results of the Mendelian randomization analysis.

    Results

    IVW results showed that Bacteroides (OR=1.045, 95%CI: 1.006-1.085), Ruminococcaceae (OR=1.119, 95%CI: 1.027-1.219), Roseobacter(OR=1.074, 95%CI: 1.004-1.149), Lactobacillus (OR=1.066, 95%CI: 1.017-1.118) and Firmicutes (OR=1.052, 95%CI: 1.003-1.102) were positively correlated with the incidence of uterine fibroids. No significant statistical difference was foundafter FDR correction (P>0.05).Bifidobacterium was negatively correlated with the incidence of uterine fibroids (OR=0.952,95%CI: 0.921-0.985). The causal association was statistically significant after FDR correction (P<0.05). No significant heterogeneity and horizontal pleiotropy were found in the sensitivity analysis.

    Conclusion

    Bifidobacterium may be a protective factor for the pathogenesis of uterine fibroids, while Bacteroides, Ruminococcaceae, Roseobacter, Lactobacillus and Firmicutes may be a potential risk factor for the pathogenesis of uterine fibroids. However, more studies are needed to verify the results. This study provides information about the microbiota that can be further studied, which is expected to improve the incidence and prognosis of uterine fibroids.

  • Peng-yue SHEN, Wen-qiang ZHANG, De-qin HUANG, Lin HE, Xia JIANG, Ben ZHANG
    Modern Preventive Medicine. 2024, 51(12): 2146-2151.
    Objective

    To evaluate the causal relationships between lipids (low-density lipoprotein cholesterol, high-density lipoprotein cholesterol [HDL-C], triglyceride [TG], apolipoprotein A-I [ApoA-I], apolipoprotein B) and non-alcoholic fatty liver disease (NAFLD) through a two-sample Mendelian randomization (MR) study.

    Methods

    Summary datasets of genome-wide association studies of lipids and NAFLD in European ancestry were leveraged, and single nucleotide polymorphisms associated with lipids were selected as instrumental variables. Several univariable MR analyses were conducted, including inverse-variance weighting method, MR-Egger regression, weighted median estimation, MR pleiotropy residual sum and outlier method. A multivariable inverse-variance weighting method was further used to evaluate the independent causal effect of lipids on NAFLD.

    Results

    Univariable inverse-variance weighting MR showed that genetically predicted higher HDL-C (OR=0.774, 95%CI: 0.708-0.845, P<0.001) and ApoA-I (OR=0.878, 95%CI: 0.796-0.968, P=0.009) were associated with a lower risk of NAFLD, while genetically predicted higher TG (OR=1.323, 95%CI: 1.201-1.458, P<0.001) was associated with a higher risk of NAFLD. The causal effects of HDL-C and TG on NAFLD remained consistent in multivariable MR when adjusting for other lipids, body mass index, and type-2 diabetes.

    Conclusion

    Our study supports a putative causal relationship between HDL-C, TG, and NAFLD.