Objective To quantitatively assess the association of short-term exposure to polycyclic aromatic hydrocarbons (PAHs) in ambient fine particulate matter (PM2.5) with residents mortality. Methods A time-stratified case-crossover study was conducted from 2020 to 2022 among 10606 non-accidental residents by using the Guangzhou Cause of Death Surveillance System in Conghua District, Guangzhou. Exposure levels of PAHs in PM_2.5 and meteorological data during the study period were obtained from the Center for Disease Control and Prevention in Conghua District and the China Meteorological Administration Land Data Assimilation System (CLDAS-V2.0), respectively. Conditional Poisson regression model was used to estimate the exposure-response association between PAHs and the mortality risk. Results Fluoranthene, chrysene, benzo[k]fluoranthene, benzo[a]pyrene, and indeno[1,2,3-cd]pyrene were significantly associated with an increased risk of mortality. For every one interquartile range increase in exposure levels, the non-accidental mortality risks increased by 8.33% (95% CI: 1.80%, 15.27%), 4.67% (95% CI: 1.86%, 7.57%), 6.07% (95% CI: 2.08%, 10.21%), 4.62% (95% CI: 1.85%, 7.47%), and 4.70% (95% CI: 0.53%, 9.03%), respectively. The estimated non accidental deaths attributable to exposure to fluoranthene, chrysene, benzo[k]fluorine, benzo[a]pyrene and indine[1,2,3-cd]pyrene were 5.91%, 6.08%, 6.51%, 6.46%, and 4.21%, respectively. Conclusions Short-term exposure to PAHs in PM_2.5, including fluoranthene, chrysene, benzo[k]fluoranthene, benzo[a]pyrene and indine[1,2,3-cd]pyrene, was significantly associated with an increased risk of mortality among residents.

BACKGROUND: The mechanisms distinguishing metabolically healthy from unhealthy phenotypes within the same BMI categories remain unclear. This study aimed to investigate the associations between regional fat distribution and metabolically unhealthy phenotypes in Chinese adults across different BMI categories. METHODS: This cross-sectional study involving 11833 Chinese adults aged 20 years and older. Covariance analysis, adjusted for age, compared the percentage of regional fat (trunk, leg, or arm fat divided by whole-body fat) between metabolically healthy and unhealthy participants. Trends in regional fat percentage with the number of metabolic abnormalities were assessed by the Jonckheere-Terpstra test. Odds ratios (ORs) and their 95% confidence intervals (CIs) were estimated by logistic regression models. All analyses were performed separately by sex. RESULTS: In non-obese individuals, metabolically unhealthy participants exhibited higher percent trunk fat and lower percent leg fat compared to healthy participants. Additionally, percent trunk fat increased and percent leg fat decreased with the number of metabolic abnormalities. After adjustment for demographic and lifestyle factors, as well as BMI, higher percent trunk fat was associated with increased odds of being metabolically unhealthy [highest vs. lowest quartile: ORs (95%CI) of 1.64 (1.35, 2.00) for men and 2.00 (1.63, 2.46) for women]. Conversely, compared with the lowest quartile, the ORs (95%CI) of metabolically unhealthy phenotype in the highest quartile for percent arm and leg fat were 0.64 (0.53, 0.78) and 0.60 (0.49, 0.74) for men, and 0.72 (0.56, 0.93) and 0.46 (0.36, 0.59) for women, respectively. Significant interactions between BMI and percentage of trunk and leg fat were observed in both sexes, with stronger associations found in individuals with normal weight and overweight. CONCLUSIONS Trunk fat is associated with a higher risk of metabolically unhealthy phenotype, while leg and arm fat are protective factors. Regional fat distribution assessments are crucial for identifying metabolically unhealthy phenotypes, particularly in non-obese individuals.
Adult ; Aged ; Female ; Humans ; Male ; Middle Aged ; Young Adult ; Adipose Tissue ; Body Fat Distribution ; Body Mass Index ; China/epidemiology* ; Cross-Sectional Studies ; Health Surveys ; Phenotype

Thyroid cancer is the most common malignant tumor of the endocrine system and head and neck region,mainly including papillary thyroid cancer(PTC),follicular thyroid cancer(FTC),medullary thyroid cancer(MTC)and anaplastic thyroid cancer(ATC).Over the past few decades,the global incidence of thyroid cancer has risen rapidly,nearly doubling in some developed countries.Geographically,thyroid cancer incidence is higher in economically developed regions.Although the fastest increase in incidence has been observed in high-income countries,certain middle-income countries have also reported significant growth.Demographically,the incidence rate is notably higher in women than in men.In China,the incidence of thyroid cancer has increased significantly in recent years,while the mortality rate has remained stable at a low level.Urban areas report higher incidence rates than rural areas,and eastern coastal regions have higher rates compared to central and western regions.The etiology of thyroid cancer is multifaceted,with major risk factors including genetic predisposition,radiation exposure,iodine intake levels,endocrine disruptions,environmental and lifestyle factors.Among these,radiation exposure(particularly ionizing radiation during childhood)is a recognized critical risk factor.In addition,both insufficient and excessive iodine intake can disrupt thyroid function,thereby increasing disease risk.Genetic factors,such as familial clustering and gene(BRAF,RET/PTC,etc.)mutations,have been widely studied,while environmental pollution and modern lifestyles may also contribute to disease onset.Therefore,it is beneficial to conduct early screening for people with a family history of thyroid cancer,reduce unnecessary medical radiation exposure and conduct intervention on lifestyle-related risk factors such as obesity to prevent and control thyroid cancer.Most patients with thyroid cancer have a favorable prognosis.The main factors influencing the prognosis include pathological typing(PTC has a relatively better prognosis,while MTC and ATC have poorer prognoses),clinical staging(patients at TNM stages Ⅰ and Ⅱ have better prognoses,while those at stages Ⅲ and Ⅳ have worse ones),physiological factors(the overall prognosis of females is superior to that of males),genetic factors and environmental factors.Understanding the epidemiological trends and identifying factors influencing the onset and prognosis of thyroid cancer are essential for its prevention,treatment and health management.Future research should focus on identifying high-risk populations and developing targeted interventions to prevent and control thyroid cancer,reduce its disease burden,improve quality of life for patients,and lower healthcare costs.

To describe the incidence and mortality of adult head and neck cancer (HNC) in different regions worldwide and their temporal trends.

OBJECTIVE Aimd to investigate the prevalence of olfactory dysfunction among healthy elderly individuals in China using a large sample size and to explore its correlations with demographic and other factors.METHODS A total of 5 258 participants who aged 60 and above underwent the T&T olfactometer test and completed questionnaires.The prevalence of olfactory dysfunction was reported,and logistic regression analyses were performed to assess the associations between olfactory dysfunction and other factors.RESULTS The overall prevalence of olfactory dysfunction in the study was 26.5%.Independent risk factors for olfactory dysfunction included advanced age,rural residence(OR=1.88,95%CI:1.60-2.22,P<0.01),current smoking(OR=1.45,95%CI:1.15-1.83,P<0.01),and self-reported olfactory dysfunction(OR=10.12,95%CI:8.44-12.14,P<0.01).In contrast,female gender(OR=0.70,95%CI:0.58-0.85,P<0.01)and high educational attainment were independently associated with a lower prevalence of olfactory dysfunction.CONCLUSION The prevalence of olfactory dysfunction among individuals aged 60 and above increased with age.Male gender,rural residence,low educational attainment,current smoking,and self-reported decline in olfactory function were independently associated with olfactory dysfunction.

Objective:To evaluate the clinical features of dystonia in patients with different types of atypical Parkinson syndrome (APS).Methods:A total of 104 patients with APS admitted in the Department of Neurology, Beijing Hospital from January 2015 to June 2023 were enrolled in the study, including 57 cases of multiple system atrophy (MSA), 38 cases of progressive supranuclear palsy (PSP) and 9 cases of corticobasal degeneration (CBD). Among 104 cases there were 63 males (60.6%), the mean age of patients was (62.3±8.9) years (54 to 73 years). The sex, age at onset, disease duration, first symptom, clinical features of dystonia and other neurological signs, response to levodopa therapy, numbers of Hoehn & Yahr scale≥3 after 3 years of disease, and MRI findings were documented in patients with different type APS.Results:The overall frequency of dystonia in this series was 45.2%(47/104), and 33.3% (19/57) for MSA group, 50.0% (19/38) for PSP group, 9/9 for CBD group. The types of dystonia were anterocollis, retrocollis, blepharospasm, oromandibular, foot/limb dystonia, Pisa syndrome and myoclonus. In all 47 cases presenting dydtonia, dystonia was not the first complaint and it did not respond to levodopa therapy.Conclusion:In this series of atypical Parkinson syndrome, dystonia is a common feature of the disease, while it is not the first symptom at disease onset, and usually does not respond to levodopa therapy.

Thyroid cancer is the most common malignant tumor of the endocrine system and head and neck region,mainly including papillary thyroid cancer(PTC),follicular thyroid cancer(FTC),medullary thyroid cancer(MTC)and anaplastic thyroid cancer(ATC).Over the past few decades,the global incidence of thyroid cancer has risen rapidly,nearly doubling in some developed countries.Geographically,thyroid cancer incidence is higher in economically developed regions.Although the fastest increase in incidence has been observed in high-income countries,certain middle-income countries have also reported significant growth.Demographically,the incidence rate is notably higher in women than in men.In China,the incidence of thyroid cancer has increased significantly in recent years,while the mortality rate has remained stable at a low level.Urban areas report higher incidence rates than rural areas,and eastern coastal regions have higher rates compared to central and western regions.The etiology of thyroid cancer is multifaceted,with major risk factors including genetic predisposition,radiation exposure,iodine intake levels,endocrine disruptions,environmental and lifestyle factors.Among these,radiation exposure(particularly ionizing radiation during childhood)is a recognized critical risk factor.In addition,both insufficient and excessive iodine intake can disrupt thyroid function,thereby increasing disease risk.Genetic factors,such as familial clustering and gene(BRAF,RET/PTC,etc.)mutations,have been widely studied,while environmental pollution and modern lifestyles may also contribute to disease onset.Therefore,it is beneficial to conduct early screening for people with a family history of thyroid cancer,reduce unnecessary medical radiation exposure and conduct intervention on lifestyle-related risk factors such as obesity to prevent and control thyroid cancer.Most patients with thyroid cancer have a favorable prognosis.The main factors influencing the prognosis include pathological typing(PTC has a relatively better prognosis,while MTC and ATC have poorer prognoses),clinical staging(patients at TNM stages Ⅰ and Ⅱ have better prognoses,while those at stages Ⅲ and Ⅳ have worse ones),physiological factors(the overall prognosis of females is superior to that of males),genetic factors and environmental factors.Understanding the epidemiological trends and identifying factors influencing the onset and prognosis of thyroid cancer are essential for its prevention,treatment and health management.Future research should focus on identifying high-risk populations and developing targeted interventions to prevent and control thyroid cancer,reduce its disease burden,improve quality of life for patients,and lower healthcare costs.

Objective:To evaluate the clinical features of dystonia in patients with different types of atypical Parkinson syndrome (APS).Methods:A total of 104 patients with APS admitted in the Department of Neurology, Beijing Hospital from January 2015 to June 2023 were enrolled in the study, including 57 cases of multiple system atrophy (MSA), 38 cases of progressive supranuclear palsy (PSP) and 9 cases of corticobasal degeneration (CBD). Among 104 cases there were 63 males (60.6%), the mean age of patients was (62.3±8.9) years (54 to 73 years). The sex, age at onset, disease duration, first symptom, clinical features of dystonia and other neurological signs, response to levodopa therapy, numbers of Hoehn & Yahr scale≥3 after 3 years of disease, and MRI findings were documented in patients with different type APS.Results:The overall frequency of dystonia in this series was 45.2%(47/104), and 33.3% (19/57) for MSA group, 50.0% (19/38) for PSP group, 9/9 for CBD group. The types of dystonia were anterocollis, retrocollis, blepharospasm, oromandibular, foot/limb dystonia, Pisa syndrome and myoclonus. In all 47 cases presenting dydtonia, dystonia was not the first complaint and it did not respond to levodopa therapy.Conclusion:In this series of atypical Parkinson syndrome, dystonia is a common feature of the disease, while it is not the first symptom at disease onset, and usually does not respond to levodopa therapy.

Objective To explore the prescription rules of traditional Chinese medicine (TCM) in the treatment of diabetes periodontitis(DP) and the acting mechanisms of core drug combination. Methods Based on the relevant literature retrieved from the CNKI,Wanfang,VIP and Sinomed,a DP prescription database was established. Excel 2021,SPSS Modeler 18.0 and SPSS Statistics 26.0 were used to conduct the statistics of the frequency,efficacy classifications,properties,flavors,and meridian tropism of the included drugs. Association rule analysis and cluster analysis were performed to screen out the core drug combinations. The active components and action targets of core drug combinations were obtained through TCMSP and HERB. The DP related disease targets were predicted using GeneCards. The Venny platform was used to obtain the intersection of disease targets and drug targets. Key components were screened by Cytoscape to establish an "active component-target" network. Based on STRING platform data,PPI network was constructed by Cytoscape to screen core targets. GO functional annotation and KEGG signaling pathway enrichment analysis were carried out for the intersection targets by DAVID. AutoDockVina was applied for molecular docking between core targets and key components. Results A total of 36 articles were included,and 50 prescriptions involving 100 Chinese herbal medicines were extracted. Alismatis Rhizoma,Rehmanniae Radix Praeparata and Astragali Radix were the most common drugs. The most used drug category was deficiency-nourishing drugs. The properties of the herbs were mainly cold and warm,the major flavors were sweet and bitter,and the main meridian tropisms were kidney and liver. Six categories were classified by clustering analysis. Moutan Cortes-Corni Fructus-Rehmanniae Radix Praeparata was screened out as the core drug combination involving 18 active components,164 drug action targets and 104 intersection of DP targets and drug combination targets. Quercetin,stigmasterol,kaempferol,β-sitosterol,tetrahydroalstonine,and sitosterol were the key components,and AKT1,IL-6,TNF,IL-1B,PTGS2,JUN,TP53,ESR1,and MMP9 were the core targets. GO analysis revealed 3724 biological processes,228 cellular components and 404 molecular functions. KEGG analysis showed that DP was treated by the core drug combination through regulating 235 signaling pathways. Molecular docking results showed that there was a good affinity between the core target and the key component. Conclusion Tonifying deficiency is the main treatment methods of TCM for DP,accompanied by clearing heat and removing dampness,activating blood circulation and removing blood stasis,replenishing qi and nourishing yin. Core drug combination (Moutan Cortes-Corni Fructus-Rehmanniae Radix Praeparata) treats DP through multi-component,multi-target and multi-pathway,which provide a reference for clinical diagnosis and treatment.

BACKGROUND: The prevalence of hypertension is high among Chinese adults, thus, identifying non-hypertensive individuals at high risk for intervention will help to improve the efficiency of primary prevention strategies. METHODS: The cross-sectional data on 9699 participants aged 20 to 80 years were collected from the China National Health Survey in Gansu and Hebei provinces in 2016 to 2017, and they were nonrandomly split into the training set and validation set based on location. Multivariable logistic regression analysis was performed to develop the diagnostic prediction model, which was presented as a nomogram and a website with risk classification. Predictive performances of the model were evaluated using discrimination and calibration, and were further compared with a previously published model. Decision curve analysis was used to calculate the standardized net benefit for assessing the clinical usefulness of the model. RESULTS: The Lasso regression analysis identified the significant predictors of hypertension in the training set, and a diagnostic model was developed using logistic regression. A nomogram with risk classification was constructed to visualize the model, and a website ( https://chris-yu.shinyapps.io/hypertension_risk_prediction/ ) was developed to calculate the exact probabilities of hypertension. The model showed good discrimination and calibration, with the C-index of 0.789 (95% confidence interval [CI]: 0.768, 0.810) through internal validation and 0.829 (95% CI: 0.816, 0.842) through external validation. Decision curve analysis demonstrated that the model was clinically useful. The model had a higher area under receiver operating characteristic curves in training and validation sets compared with a previously published diagnostic model based on Northern China population. CONCLUSION This study developed and validated a diagnostic model for hypertension prediction in Gansu Province. A nomogram and a website were developed to make the model conveniently used to facilitate the individualized prediction of hypertension in the general population of Han and Yugur.
Adult ; Humans ; Asian People ; China/epidemiology* ; Cross-Sectional Studies ; Health Surveys ; Hypertension/epidemiology* ; Nomograms ; Ethnicity