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AimsTo examine the incidence of cardiovascular disease (CVD) and mortality in China and in key subpopulations, and to estimate the population-level risks attributable to 12 common modifiable risk factors for each outcome.Methods and resultsIn this prospective cohort of 47 262 middle-aged participants from 115 urban and rural communities in 12 provinces of China, it was examined how CVD incidence and mortality rates varied by sex, by urban-rural area, and by region. In participants without prior CVD, population-attributable fractions (PAFs) for CVD and for death related to 12 common modifiable risk factors were assessed: four metabolic risk factors (hypertension, diabetes, abdominal obesity, and lipids), four behavioural risk factors (tobacco, alcohol, diet quality, and physical activity), education, depression, grip strength, and household air pollution. The mean age of the cohort was 51.1 years. 58.2% were female, 49.2% were from urban areas, and 59.6% were from the eastern region of China. The median follow-up duration was 11.9 years. The CVD was the leading cause of death in China (36%). The rates of CVD and death were 8.35 and 5.33 per 1000 person-years, respectively, with higher rates in men compared with women and in rural compared with urban areas. Death rates were higher in the central and western regions of China compared with the eastern region. The modifiable risk factors studied collectively contributed to 59% of the PAF for CVD and 56% of the PAF for death in China. Metabolic risk factors accounted for the largest proportion of CVD (PAF of 41.7%), and hypertension was the most important risk factor (25.0%), followed by low education (10.2%), high non-high-density lipoprotein cholesterol (7.8%), and abdominal obesity (6.9%). The largest risk factors for death were hypertension (10.8%), low education (10.5%), poor diet (8.3%), tobacco use (7.5%), and household air pollution (6.1%).ConclusionBoth CVD and mortality are higher in men compared with women, and in rural compared with urban areas. Large reductions in CVD could potentially be achieved by controlling metabolic risk factors and improving education. Lowering mortality rates will require strategies addressing a broader range of risk factors.

Acylhydrazone Schiff bases are rich in N and O atoms to coordinate with metal ions to form multidentate complexes. In this study, a novel diacylhydrazone Schiff base (N′1E,N′4E)-N′1,N′4-bis(2-hydroxy-5-nitrobenzylidene)succinohydrazide (H4L) was synthesized from the condensation of nitrosalicylaldehyde and succinic dihydrazide. The interactions of H4L with common monovalent, divalent and trivalent metal ions were investigated by ultraviolet spectroscopy and fluorescence spectroscopy. The results showed that H4L had no obvious effect on the monovalent metal ions (Li+, Na+, K+), but reacted with most divalent and trivalent metal ions, and showed single selectivity in the fluorescence recognition of Fe3+ ions. More importantly, three kinds of binuclear molecular structures, [Zn2(H2L)2]·5DMF (Zn-L), [Cd2(H2L)2]·DMF·H2O (Cd-L) and [Eu2(H2L)3]·6DMSO (Eu-L), have been studied to further illustrate the interaction mode of diacylhydrazone Schiff base and metal ions. In addition, the optical properties of these crystallized complexes have been studied in DMF solution.

Summary Background & aims Although fruits and vegetable consumption has been shown to be associated with lower risks of mortality, cancers, and cardiovascular disease (CVD), there are limited data from China on the shape of the association. This study aimed to quantify the relationship between levels of fruit, vegetable, and legume consumption with the risk of major CVD, CVD mortality, cancer incidence, cancer mortality, and all-cause mortality. Methods In the baseline survey, participants attended 1 of 115 (45 urban and 70 rural) communities from 12 provinces to complete a standardized questionnaire, and undergo a physical examination between 2005 and 2009, and were followed up till 2017 (for the current analysis). Diet was assessed through in-person interviews by using validated food-frequency questionnaires. The clinical outcomes were adjudicated centrally by trained physicians using standardized definitions. Cox frailty models were used to explore the associations between fruit, vegetable, and legume consumption with the risk of all-cause, CVD, and cancer mortality. Results A total of 41 243 participants were eligible for inclusion in the analyses. The average combined average daily intake of fruit, vegetable, and legume was 2.97 [standard deviation (SD) 1.22] servings per day. During a median follow-up of 8.9 years [interquartile range (IQR) 6.7–9.9 years], we recorded 1893 major CVDs, 794 cancer events, and 1324 deaths, with 411 CVD deaths and 429 cancer deaths. In the models adjusted for age, sex, and center (random effect), a higher total intake of fruit, vegetable, and legume was inversely associated with CVD mortality, cancer incidence, cancer mortality, and all-cause mortality. After adjusting for additional covariates, the associations were evidently attenuated and only the association with all-cause mortality (hazard ratio [HR] trend 0.92, 95% CI 0.86–0.98, p trend = 0.021) remained significant, with a non-significant trend for major CVD (HR trend 1.02, 95% CI 0.97–1.08, p trend = 0.449), CVD mortality (HR trend 0.94, 95% CI 0.84–1.06, p trend = 0.301), cancer incidence (HR trend 0.97, 95% CI 0.89–1.06, p trend = 0.540), or cancer mortality (HR trend 0.92, 95% CI 0.82–1.04, p trend = 0.174). Compared with the reference group, the risk of all-cause mortality was the lowest for four to five servings of total daily intake of fruit, vegetable, and legume (HR 0.73, 95% CI 0.55–0.97), and did not show a further decrease for the higher intake group. Separately, fruit intake was associated with a lower risk of all-cause mortality (HR trend 0.92, 95% CI 0.86–0.99, p trend = 0.020) and legume intake was associated with a lower risk of major CVD (HR trend 0.95, 95% CI 0.90–0.99, p trend = 0.028) and all-cause mortality (HR trend 0.94, 95% CI 0.89–0.99, p trend = 0.020) in the fully adjusted models. Conclusions This prospective study suggests that Chinese people with daily consumption of four to five servings (equivalent to 500–625 g/day) of fruit, vegetable, and legume demonstrated the lowest mortality, which conveys an encouraging message to the public that lifestyle modification to increase fruit, vegetable, and legume intakes may have greater beneficial effects on reducing all-cause mortality.

Background The predictive value of adiposity indices and the newly developed index for cardiometabolic risk factors and cardiovascular diseases ( CVD s) remains unclear in the Chinese population. This study aimed to compare the predictive value of A Body Shape Index with other 5 conventional obesity‐related anthropometric indices (body mass index, waist circumference, hip circumference, waist‐to‐hip ratio, waist‐to‐height ratio) in Chinese population. Methods and Results A total of 44 048 participants in the study were derived from the baseline data of the PURE ‐China (Prospective Urban and Rural Epidemiology) study in China. All participants’ anthropometric parameters, CVD s, and risk factors (dyslipidemia, abnormal blood pressure, and hyperglycemia) were collected by standard procedures. Multivariable logistic regression models and receiver operator characteristic curve analysis were used to evaluate the predictive values of obesity‐related anthropometric indices to the cardiometabolic risk factors and CVD s. A positive association was observed between each anthropometric index and cardiometabolic risk factors and CVD s in all models ( P AUC s) for predicting dyslipidemia ( AUC s: 0.646, sensitivity: 65%, specificity: 44%), hyperglycemia ( AUC s: 0.595, sensitivity: 60%, specificity: 45%), and CVD s ( AUC s: 0.619, sensitivity: 59%, specificity: 41%). Waist circumference showed the best prediction for abnormal blood pressure ( AUC s: 0.671, sensitivity: 66%, specificity: 40%) compared with other anthropometric indices. However, the new body shape index did not show a better prediction to either cardiometabolic risk factors or CVD s than that of any other traditional obesity‐related indices. Conclusions Waist‐to‐height ratio appeared to be the best indicator for dyslipidemia, hyperglycemia, and CVD s, while waist circumference had a better prediction for abnormal blood pressure.

Background Most cardiovascular diseases occur in low‐ and middle‐income regions of the world, but the socioeconomic distribution within China remains unclear. Our study aims to investigate whether the prevalence of cardiovascular diseases differs among high‐, middle‐, and low‐income regions of China and to explore the reasons for the disparities. Methods and Results We enrolled 46 285 individuals from 115 urban and rural communities in 12 provinces across China between 2005 and 2009. We recorded their medical histories of cardiovascular diseases and calculated the INTERHEART Risk Score for the assessment of cardiovascular risk‐factor burden, with higher scores indicating greater burden. The mean INTERHEART Risk Score was higher in high‐ and middle‐income regions than in low‐income regions (9.47, 9.48, and 8.58, respectively, P P trend =0.0064). In high‐ and middle‐income regions, urban communities have higher INTERHEART Risk Score and higher prevalent rate than rural communities. In low‐income regions, however, the prevalence of total cardiovascular disease was similar between urban and rural areas despite the significantly higher INTERHEART Risk Score for urban settings. Conclusions We detected an inverse trend between risk‐factor burden and cardiovascular disease prevalence in urban and rural communities in high‐, middle‐, and low‐income regions of China. Such asymmetry may be attributed to the interregional differences in residents’ awareness, quality of healthcare, and availability and affordability of medical services.

Some peptide-based drugs, including oxytocin, vasopressin, ziconotide, pramlintide, nesiritide, and octreotide, contain one intramolecular disulfide bond. A novel and reusable monodispersed silica nanosphere-supported Pt(IV) complex (SiO₂@TPEA@Pt(IV)); TPEA: N-[3-(trimethoxysilyl)propyl]ethylenediamine) was synthesized via a four-step procedure and was used for the formation of intramolecular disulfide bonds in peptides. Transmission electron microscopy (TEM) and chemical mapping results for the Pt(II) intermediates and for SiO₂@TPEA@Pt(IV) show that the silica nanospheres possess a monodisperse spherical structure and contain uniformly-distributed Si, O, C, N, Cl, and Pt. The valence state of Pt on the silica nanospheres was characterized by X-ray photoelectron spectroscopy (XPS). The Pt(IV) loaded on SiO₂@TPEA@Pt(IV) was 0.15 mmol/g, as determined by UV-VIS spectrometry. The formation of intramolecular disulfides in six dithiol-containing peptides of variable lengths by the use of SiO₂@TPEA@Pt(IV) was investigated, and the relative oxidation yields were determined by high-performance liquid chromatography (HPLC). In addition, peptide 1 (Ac-CPFC-NH₂) was utilized to study the reusability of SiO₂@TPEA@Pt(IV). No significant decrease in the relative oxidation yield was observed after ten reaction cycles. Moreover, the structure of SiO₂@TPEA@Pt(IV) after being used for ten cycles was determined to be similar to its initial one, demonstrating the cycling stability of the complex.