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This research adopted the D-galactose induced senility mice as the research object, under the condition of constant energy control, different protein content of feeding groups was designed. Mice were under dietary intervention for 8 weeks, by analyzing the Morris water maze data, brain tissue slice and liver tissue antioxidant capacity to explore the anti-aging effect of protein nutrition in Guangxi longevity dietary patterns. The results showed that: Compared with the high (P/C=1/2), medium (P/C=1/3) and low (P/C=1/5) protein diet groups, the escape latency of mice in P/C=1/4 (protein/carbohydrate) group significantly decreased (P P/C=1/5 group > P/C=1/3 group > young control group > P/C=1/2 group > aging control group. In summary, mice in P/C=1/4 low-protein diet group can effectively resist the senior-induced injury of D-galactose, and maintain strong learning and memory ability and antioxidant ability, thus showing strong anti-aging effect. The results of this study would provide a theoretical basis for the relationship between dietary protein nutrition and health as well as longevity.

To explore the relationship between diet and human health, this study aimed to evaluate the beneficial effects of the existing Guangxi longevity dietary pattern on the human body from metabolomics. After 2 weeks of habitual diet, the selected volunteers followed this dietary pattern with high adherence for the same period. The blood and fecal samples were collected 3 times then performed metabolomics analysis, including before the habitual diet, the beginning (which was also the ending point of habitual diet) and the end of Guangxi longevity dietary pattern. The results showed that after the Guangxi longevity dietary intervention of volunteers, the relative abundance of serum histidine, glycerol, α-glucose and β-glucose was significantly increased (P

To explore the potential quantitative relationship between dietary characteristics and physical health indicators of the long-lived population in Guangxi, the longevous in Guangxi (Fengshan County, Donglan County, Shanglin County, Dahua County, and Cenxi City) and some of their descendants were recruited from 2016 to 2018. A semi-quantitative food frequency questionnaire (FFQ) was used to investigate their diet, routine physical examination indicators and blood sample analysis data of the long-lived population were collected, and the weight of the corresponding indicators obtained was calculated by the entropy weight method. Health composite index (HCI) was further introduced to conduct a comprehensive evaluation of health indicators, and stochastic forest regression algorithm was used to model the relationship between volunteers' food and nutrient intake and HCI, to explore the quantitative relationship between each parameter. The results of the model were evaluated by ‘Accuracy’. The results showed that BMI, hemoglobin, triglyceride and C-reactive protein were significantly different in different age groups. There were significant differences in food component intake and nutrient intake among different age groups (P

IntroductionRecent evidence supports a role for the gut microbe-metabolites in longevity. However, the phenomenon of hypertension is more common in the longevity area and whether hypertension is associated with longevity remains unclear. Here, we hypothesize that the levels of gut microbiota, SCFAs, and urine metabolites were different between hypertension elderly and hypertension longevity.MethodsWe recruited 46 elderly volunteers from Donglan County, Guangxi, and 32 were selected and included in the experiment. The subjects with hypertension were divided into two groups according to age, Hypertension Elderly (HTE, aged 70.5 ± 8.59, n = 19) and Hypertension Longevity (HTL, aged 100 ± 5.72, n = 13). The gut microbiota, SCFAs, and urine metabolites were determined by three-generation 16S rRNA full-length sequencing, GC-MS, and 1H-NMR, respectively.ResultsCompared with the HTL group, the HTE group had higher levels of hypertension-related genera Klebsiella and Streptococcus, while having lower levels of the SCFA-producing genera Bacteroides, Faecalibacterium, and Alistipes. Based on LEFse analysis, Klebsiella pneumoniae, Lactobacillus gasseri, Streptococcus salivarius, Ruminococcus, Actinomyces, Rikenellaceae, f_Saccharimonadaceae, Clostridium perfringens, and Bacteroids, Faecalibacterium prausnitzii, Parabacteroides, Alistipes were biomarkers that showed significant differences between the groups. In addition, the microbial pathways associated with K. pneumoniae and E. coli may promote hypertension, while A. muciniphila may play a role in reversing the development of hypertension in long-lived elderly. Metabolomics revealed that HTL contained a lower concentration of fecal acetate and propionate than HTE, while it contained a higher concentration of serum acetate and urine acetate. Furthermore, their immune cells exhibited no significant changes in SCFAs receptors.ConclusionAlthough long-lived elderly have extremely high systolic blood pressure, their unique gut microbiota composition and efficient acetate absorption in the colon may offset the damages caused by hypertension and maintain healthy homeostasis.

The phenomenon of longevity in Guangxi of China proved to be closely relevant to its specific dietary habits, but the exact effects of this diet on health remain to be explored. In this work, fourteen screened volunteers with cardiovascular disease (CVD) risk followed a novel dietary pattern derived from centenarians of Guangxi, China for 2 weeks, then the effects of diet on human health were explored by measuring the health metrics and fecal metabolites. The results showed that the short-term dietary intervention significantly decreased the body weight, body mass index (BMI), total cholesterol (TC), low-density lipoprotein cholesterol (LDL-c), mean systolic blood pressure (SBP), and diastolic blood pressure (DBP) levels, while it significantly increased high-density lipoprotein cholesterol (HDL-c) levels. Orthogonal partial least squares discriminant analysis (OPLS-DA) indicated a distinct separation in the fecal metabolic profiles of volunteers before and after the intervention. Nine of these metabolites showed significant differences, including two metabolites increased (butyrate and citrulline), seven metabolites decreased (threonine, choline, glycine, aspartate, alanine, N-acetylglutamic acid and lysine). Pathway and enrichment analysis showed that the reduction in CVD risk by dietary intervention mainly affected five pathways, which include arginine biosynthesis; aminoacyl-tRNA biosynthesis; glycine, serine and threonine metabolism; alanine, aspartate and glutamate metabolism; and valine, leucine and isoleucine biosynthesis. Herein, the Guangxi longevity dietary pattern can provide a feasible healthy diet strategy for reducing the CVD risk and human beings.Clinical Trial Registration[http://www.chictr.org.cn], identifier [ChiCTR220 0058216].