Effects of defined voluntary running distances coupled with high-fat diet consumption on the skeletal muscle transcriptome of male mice.

Exercise counters many adverse health effects of consuming a high-fat diet (HFD). However, complex molecular changes that occur in skeletal muscle in response to exercising while consuming a HFD are not yet known. We investigated the interplay between diverse exercise regimes and HFD consumption on the adaptation of skeletal muscle transcriptome.

Predictive equation derived from 6,497 doubly labelled water measurements enables the detection of erroneous self-reported energy intake.

Nutritional epidemiology aims to link dietary exposures to chronic disease, but the instruments for evaluating dietary intake are inaccurate. One way to identify unreliable data and the sources of errors is to compare estimated intakes with the total energy expenditure (TEE). In this study, we used the International Atomic Energy Agency Doubly Labeled Water Database to derive a predictive equation for TEE using 6,497 measures of TEE in individuals aged 4 to 96 years.

Impact of NAFLD-related SNPs on the carotid atherosclerosis development; a five-year prospective observational study.

Background And Aims: The prevalence of metabolic dysfunction associated steatotic liver disease (MASLD), formerly known as nonalcoholic fatty liver disease (NAFLD), has become a significant public health concern with an increased atherosclerotic cardiovascular disease risk. This study investigates the impact of NAFLD-related single nucleotide polymorphisms (SNPs) on carotid atherosclerosis development in a Japanese population without diabetes, dyslipidemia, and hypertension.

Methods: The prospective observational study, part of the Kyushu and Okinawa Population Study (KOPS), included 945 participants (median age 55 [47, 63]) without carotid atherosclerosis, increased alcohol intake, diabetes, dyslipidemia, hypertension, or chronic hepatitis at baseline.

Dietary blueberry before and/or after exposure to HZE particle radiation attenuates neuroinflammation, oxidative stress, glial cell activation, and memory deficits in rats.

Background: Acute neuroinflammatory and oxidative-stress (OS)-inducing stressors, such as high energy and charge (HZE) particle irradiation, produce accelerated aging in the brain. Anti-inflammatory and antioxidant foods, such as blueberries (BB), attenuate neuronal and cognitive deficits when administered to rodents before or both before and after HZE particle exposure. However, the effects of post-stressor treatments are unknown and may be important to repair initial damage and prevent progressive neurodegeneration.

Comparative Investigation of Untargeted and Targeted Metabolomics in Turmeric Dietary Supplements and Rhizomes.

In the present study, we analyzed the bioactive curcuminoids content in eight capsules (DS-1-DS-7 and DS-9), one tablet (DS-8), three ground turmeric samples (DS-10-DS-12), and three ground turmeric rhizomes (TR-1, TR-2, and TR-3). Initial screening with infrared and ultraviolet-visible spectroscopy coupled with a principal component analysis (PCA) revealed distinct differences between the samples analyzed. Hence, targeted and untargeted analyses were performed using ultra-high-performance liquid chromatography and gas chromatography coupled with mass spectrometry detections.

Association of Healthy Eating Index (HEI)-2015 total and component scores with measures of inflammation and immune activation in healthy adults.

Background: The Healthy Eating Index (HEI)-2015 measures diet quality and is associated with a lower risk of death from chronic disease. Dietary components may affect health via multiple mechanisms, including by decreasing inflammation and affecting immune activation.

Objective: We hypothesized that the overall HEI-2015 score, or individual component scores, would be associated with altered inflammation and immune activation in healthy adults.

Resistant starch inhibits high-fat diet-induced oncogenic responses in the colon of C57BL/6 mice.

The beneficial effects of dietary fiber for colon health may be due to short chain fatty acids (SCFAs), such as butyrate, produced by colonic bacterial fermentation. In contrast, obesogenic diet induced obesity is linked to increased colon cancer incidence. We hypothesize that increasing fiber intake promotes healthy microbiome and reduces bacterial dysbiosis and oncogenic signaling in the colon of mice fed an obesogenic diet.

The first comorbidity networks in companion dogs in the Dog Aging Project.

Comorbidity and its association with age are of great interest in geroscience. However, there are few model organisms that are well-suited to study comorbidities that will have high relevance to humans. In this light, we turn our attention to the companion dog.

Associations between omega-3 fatty acid-derived lipid mediators and markers of inflammation in older subjects with low-grade chronic inflammation.

Cardiovascular disease (CVD), the leading cause of death in the United States and globally, is a chronic inflammatory disease likely caused by an impaired ability to resolve inflammation. Pre-clinical studies have provided strong evidence of the activating role of specialized pro-resolving lipid mediators (SPMs) derived from the omega-3 fatty acids eicosapentaenoic acid (EPA), docosapentaenoic acid (DPA) and docosahexaenoic acid (DHA) on the resolution of inflammation. However, there is a dearth of information on the role of SPMs on inflammation in humans.

Association of Vitamin D Status with Immune Markers in a Cohort of Healthy Adults.

Background: Immune function is affected by vitamin D status, but the optimal serum 25-hydroxy vitamin D [25(OH)D] concentration for immune function is not known.

Objectives: We hypothesized that 25(OH)D would be associated with markers of inflammation and immune activation.

Methods: We identified associations between 25(OH)D and immune markers from 361 healthy adults using polynomial regression.

Biomarkers of cellular senescence and major health outcomes in older adults.

The geroscience hypothesis proposes that underlying biological processes, such as the accumulation of senescent cells, have deleterious effects on multiple tissues and increase the risk of many chronic conditions with aging. Senescent cells produce heterogenous biomarkers, also called senescence-associated secretory phenotype (SASP). Circulating concentrations of senescence biomarkers may reflect an underlying burden of senescent cells in various tissues.

An Environmentally Compatible and Less Costly (Greener) Microwave Digestion Method of Bone Samples Using Dilute Nitric Acid for Analysis by ICP-MS.

An environmentally compatible and less costly (greener) analytical method for the digestion of bone meal samples using microwave-assisted dilute nitric acid (HNO) was developed and optimized. The method, employing a mixture of 1 mL concentrated HNO and 4 mL of deionized water, offered a comparable performance to the conventional method using 5 mL of concentrated HNO. The accuracy of the method was validated by using certified reference material NIST 1486 (Bone Meal); percentage recoveries were within ±15% for all eight certified elements.

The Octadecanoids: Synthesis and Bioactivity of 18-Carbon Oxygenated Fatty Acids in Mammals, Bacteria, and Fungi.

The octadecanoids are a broad class of lipids consisting of the oxygenated products of 18-carbon fatty acids. Originally referring to production of the phytohormone jasmonic acid, the octadecanoid pathway has been expanded to include products of all 18-carbon fatty acids. Octadecanoids are formed biosynthetically in mammals via cyclooxygenase (COX), lipoxygenase (LOX), and cytochrome P450 (CYP) activity, as well as nonenzymatically by photo- and autoxidation mechanisms.

A 2-year calorie restriction intervention reduces glycomic biological age biomarkers.

Background/objective: In a subset of participants from the CALERIE Phase 2 study we evaluated the effects of 2y of ~25% Calorie Restriction (CR) diet on IgG N-glycosylation (GlycAge), plasma and complement C3 N-glycome as markers of aging and inflammaging.

Methods: Plasma samples from 26 participants in the CR group who completed the CALERIE2 trial and were deemed adherent to the intervention (~>10 % CR at 12 mo) were obtained from the NIA AgingResearchBiobank. Glycomic investigations using UPLC or LC-MS analyses were conducted on samples from baseline (BL), mid-intervention (12 mo) and post-intervention (24 mo), and changes resulting from the 2y CR intervention were examined.

A Method for Assessing the Prevalence of Food Insecurity in Older Adults Based on Resource Constraints and Food-Related Physical Functioning Limitations.

Background: Older adults with food-related physical functioning limitations often face food insecurity because of challenges that go beyond resource constraints. Difficulties with food acquisition at retailers, and food preparation and consumption are not captured by the United States Department of Agriculture's food security measure.

Objectives: The objective of this study was to develop a method to assess the overall prevalence of food insecurity regardless of underlying cause using validated measures that capture both food-related physical functioning limitations and resource-constraint food hardships.

Responders to biologics in severe uncontrolled chronic rhinosinusitis with nasal polyps: a multicentric observational real-life study.

Background: Clinical trials have demonstrated the effectiveness of biologics in treating chronic rhinosinusitis with nasal polyps (CRSwNP). However, real-world evidence regarding patient outcomes and predictors of clinical response remains limited.

Methodology: In this multicentric 18-month follow-up study, 326 adult patients who initiated biologic therapy for severe uncontrolled CRSwNP were included.

Effect of vitamin D3, omega-3 fatty acids, and exercise on serum sclerostin levels and bone turnover markers.

Context: Sclerostin inhibits canonical Wnt signaling, a pathway promoting bone formation. The effects of vitamin D3, omega-3 fatty acids (omega-3s), and exercise on serum sclerostin levels and bone metabolism are unclear.

Objective: To investigate the effects of 2000 IU/d vitamin D3, 1g/d omega-3s, and a simple home-based strength exercise program (SHEP), alone or in combination, on serum sclerostin and bone turnover marker levels.

The role of nutrition-related clinical trials in informing dietary recommendations for health and treatment of diseases.

Dietary guidance is based on a robust evidence base that includes high-quality clinical trials, of which some have been designed to establish causal relationships between dietary interventions and ASCVD risk reduction. However, the complexity associated with conducting these trials has resulted in criticism of nutrition and dietary recommendations because the strength and quality of evidence falls short of that for some pharmaceutical interventions. In this paper, we aim to promote greater awareness of the nutrition-related clinical trials that have been conducted showing ASCVD benefits and how this evidence has contributed to dietary recommendations.

Diet-gut microbiome interaction and its impact on host blood glucose homeostasis: a series of nutritional n-of-1 trials.

Background: The interplay between diet and gut microbiome substantially influences host metabolism, but uncertainties remain regarding their relationships tailored for each subject given the huge inter-individual variability. Here we aim to investigate diet-gut microbiome interaction at single-subject resolution and explore its effects on blood glucose homeostasis.

Methods: We conducted a series of nutritional n-of-1 trials (NCT04125602), in which 30 participants were assigned high-carbohydrate (HC) and low-carbohydrate (LC) diets in a randomized sequence across 3 pair of cross-over periods lasting 72 days.

Association between dietary inflammatory index score and incident dementia.

Introduction: We evaluated whether higher Dietary Inflammatory Index (DII) scores were associated with increased incidence of all-cause dementia and Alzheimer's disease (AD) dementia over 22.3 years of follow-up in the community-based Framingham Heart Study Offspring cohort.

Methods: One thousand four hundred eighty-seven participants (mean ± standard deviation, age in years 69 ± 6) completed food frequency questionnaires (FFQs) and had incident all-cause dementia and AD surveillance data available.