Association of composite dietary antioxidant index with prevalence of stroke: insights from NHANES 1999-2018.

Background: There is a growing acknowledgment of the potential influence of antioxidative effects resulting from dietary decisions on the occurrence of stroke. The objective of this study was to elucidate the correlation between the composite dietary antioxidant index (CDAI) and the incidence of stroke in the general population of the United States. Methods: We gathered cross-sectional data encompassing 40,320 participants from the National Health and Nutrition Examination Survey (NHANES) spanning the years 1999 to 2018. Employing weighted multivariate logistic regression, we assessed the correlation between CDAI and stroke, while also investigating potential nonlinear relationships through restricted cubic spline (RCS) regression. Further, the intake of CDAI components were then incorporated into a predictive nomogram model, subsequently evaluated for its discriminatory prowess in stroke risk assessment using the receiver operating characteristic (ROC) curve. Results: Post-adjustment for confounding variables, we found that higher CDAI score were associated with a decreased risk of stroke, the odds ratio (OR) [95% CI] of CDAI associating with prevalence was 0.96 [0.94-0.98] (P< 0.001). Moreover, the adjusted OR [95% CI] for stroke across ascending CDAI quartiles stood at 0.90 [0.74-1.09], 0.74 [0.60-0.91], and 0.61 [0.50-0.76] compared to the reference quartile, respectively. The RCS analysis indicated a nonlinear yet negative correlation between CDAI and stroke. The nomogram model, constructed based the intake of antioxidants, exhibited a significant predictive capacity for stroke risk, boasting an area under the curve (AUC) of 77.4% (76.3%-78.5%). Conclusion: Our investigation ascertained a nonlinear negative relationship between CDAI and stroke within the broader American population. However, given the inherent limitations of the cross-sectional design, further comprehensive research is imperative to establish the causative nature of this association.

Transcriptome-wide identification of NAC (no apical meristem/Arabidopsis transcription activation factor/cup-shaped cotyledon) transcription factors potentially involved in salt stress response in garlic.

Soil salinity has been an increasing problem worldwide endangering crop production and human food security. It is an ideal strategy to excavate stress resistant genes and develop salt tolerant crops. NAC (no apical meristem/Arabidopsis transcription activation factor/cup-shaped cotyledon) transcription factors have been demonstrated to be involved in salt stress response. However, relevant studies have not been observed in garlic, an important vegetable consumed in the world. In this study, a total of 46 AsNAC genes encoding NAC proteins were identified in garlic plant by transcriptome data. Phylogenetic analysis showed that the examined AsNAC proteins were clustered into 14 subgroups. Motif discovery revealed that the conserved domain region was mainly composed of five conserved subdomains. Most of the genes selected could be induced by salt stress in different tissues, indicating a potential role in salt stress response. Further studies may focus on the molecular mechanisms of the AsNAC genes in salt stress response. The results of the current work provided valuable resources for researchers aimed at developing salt tolerant crops.

Trend in caries prevalence of permanent teeth and DMFT in the 7-year-old primary school students of Han nationality from 1991 to 2014 / 中国学校卫生

Objective@#To analyze the dynamic trend of caries prevalence of permanent teeth and DMFT in the 7-year-old primary school students of Han nationality from 1991 to 2014, and to provide a basis for the development of caries prevention measures for children and adolescents.@*Methods@#A total of 100 652 students from the 7yearold age group of 30 provinces, autonomous regions and municipalities in 1991, 1995, 2000, 2005, 2010 and 2014 from Physical Fitness And Health Surveillance Of Chinese School Students were selected. DMF% and DMFT were used as indicators to analyze the change trend of caries prevalence of permanent teeth and DMFT in different groups of 7-year-old primary school students of Han nationality in the past 25 years.@*Results@#During the 25 years, the DMF% of primary school students in 7 years old group showed an overall U-shaped development trend. DMF% was 7.9% in 1991, lowest at 3.2% in 2005, and 5.2% in 2014. The DMFT basically showed a steady fluctuation trend. DMFT of rural girls were higher than the other three groups.@*Conclusion@#In view of the serious caries problem among primary school students aged 7 in China, it is necessary to continue to improve oral health strategies, strengthen the publicity of prevention and treatment of caries and oral health education, increase the input of oral health resources in rural areas, reduce the prevalence of caries and protect children’s oral health.

[Spectral characteristic parameters estimation models for potassium content of Juglans regia 'Wen185' leaves.] / åŸºäºŽå ‰è°±ç‰¹å¾å‚é‡çš„'温185'æ ¸æ¡ƒå¶ç‰‡é’¾å«é‡ä¼°æµ‹æ¨¡åž‹.

According to the field trials with quantitative fertilization, the spectral characteristic parameters which were highly significantly correlated with foliar potassium (K) content were screened out using Pearson correlation analysis, and the foliar K content estimation models of Juglans regia 'Wen185' in different phenological periods of fruit development were built up with these parameters as independent variables using regression analysis. The results showed that there were one or more spectral characteristic parameters which were highly significantly correlated with the foliar K contents of 'Wen185' walnut in the different phonological periods of fruit development (P＜0.01). Through cubic function analysis with normalized difference green index in the fruit setting period, ratio red and yellow edge area index in the fruit rapid-growth period, ratio green index in the fruit fat-change period and blue edge area in the fruit near-mature period as independent variable, the regression estimation models of the foliar K content in the different phenological periods of fruit development were established respectively, and their fitting degrees (R2) were all above 0.95. In addition, the estimated values of the models for the foliar K content of 'Wen185' walnut were consis-tent with the measured values of the independent samples, and the root mean square errors and the relative errors of the independent sample tests were less than 0.8161 g·kg-1 and 2.7% in the diffe-rent phenological periods of fruit development. The models showed their high estimation accuracy. The spectrum technology possessed great application potential in monitoring K status of J. regia.

[Models for estimating foliar Fe and Mn Concentration of Armeniaca vulgaris cv. Luntaibaixing using spectral reflectance].

Aimed at providing technology for a rapid nutrition diagnosis system of micronutrients in Armeniaca vulgaris cv. Luntaibaixing, we established an element concentration estimation model for its foliar ferrum (Fe) and manganese (Mn) concentration based on spectrum analysis. The foliar spectrum reflectance at various phenological periods of fruit development under different soil fertility conditions was measured by Unispec-SC spectrometer. By analyzing the correlation of foliar Fe, Mn concentration at various phenological periods of fruit development, the spectrum reflectance Rλ and its first-order differential f' (Rλ), we filtered out its sensitive bands. And we established an element concentration estimation model for its foliar Fe and Mn at various phenological periods of fruit development with the linear regression model. The results showed that the spectral sensitive bands of foliar Fe in fruit setting period were 873 and 874 nm, 375 and 437 nm in fruit core-hardening period, 836 and 837 nm in maturity period and 325 and 1 054 nm in post-harvest period. However, the spectral sensitive bands of Mn were 913 and 1 129 nm, 425 and 970 nm, 390 and 466 nm, 423 and 424 nm, respectively. The Fe and Mn concentration of A. vulgaris cv. Luntaibaixing leaves were the most relevant to the first-order differential f' (RD) of its spectrum reflectance, whose linear spectrum estimation model fitting degree was the highest and reached to a significant or highly significant level. It showed that the spectral sensitive bands of Fe and Mn element varied with different phenological periods of fruit development. The spectrum estimation models for its foliar Fe and Mn concentration could be established with linear model according to its first-order differential f' (Rλ).