scholarly journals Minimal Associations between Short-Term Dietary Intake and Salivary Microbiome Composition

2021 ◽  
Vol 9 (8) ◽  
pp. 1739
Author(s):  
Judith Kim ◽  
Minyi Lee ◽  
Brittany Baldwin-Hunter ◽  
Quinn S. Solfisburg ◽  
Charles J. Lightdale ◽  
...  
Keyword(s):  
Dietary Intake ◽  
Relative Abundance ◽  
Red Meat ◽  
Oral Microbiome ◽  
Short Term ◽  
Meat Intake ◽  
Microbiome Composition ◽  
Esophageal Neoplasia ◽  
Red Meat Intake ◽  
The Impact

Background: Increasing evidence points to the esophageal microbiome as an important co-factor in esophageal neoplasia. Esophageal microbiome composition is strongly influenced by the oral microbiome. Salivary microbiome assessment has emerged as a potential non-invasive tool to identify patients at risk for esophageal cancer, but key host and environmental factors that may affect the salivary microbiome have not been well-defined. This study aimed to evaluate the impact of short-term dietary intake on salivary microbiome composition. Methods: Saliva samples were collected from 69 subjects prior to upper endoscopy who completed the Automated Self-Administered 24-Hour (ASA24) Dietary Assessment. Salivary microbiome composition was determined using 16S rRNA amplicon sequencing. Results: There was no significant correlation between alpha diversity and primary measures of short-term dietary intake (total daily calories, fat, fiber, fruit/vegetables, red meat intake, and fasting time). There was no evidence of clustering on beta diversity analyses. Very few taxonomic alterations were found for short-term dietary intake; an increased relative abundance of Neisseria oralis and Lautropia sp. was associated with high fruit and vegetable intake, and an increased relative abundance of a taxon in the family Gemellaceae was associated with increased red meat intake. Conclusions: Short-term dietary intake was associated with only minimal salivary microbiome alterations and does not appear to have a major impact on the potential use of the salivary microbiome as a biomarker for esophageal neoplasia.

scholarly journals Adopting a Mediterranean-Style Eating Pattern with Different Amounts of Lean Unprocessed Red Meat Does Not Influence Short-Term Subjective Personal Well-Being in Adults with Overweight or Obesity

2018 ◽  
Vol 148 (12) ◽  
pp. 1917-1923 ◽  
Author(s):  
Lauren E O'Connor ◽  
Sarah L Biberstine ◽  
Douglas Paddon-Jones ◽  
A J Schwichtenberg ◽  
Wayne W Campbell
Keyword(s):  
Quality Of Life ◽  
Well Being ◽  
Red Meat ◽  
Eating Patterns ◽  
Short Term ◽  
Eating Pattern ◽  
Meat Intake ◽  
Perceived Quality Of Life ◽  
Red Meat Intake

ABSTRACT Background Reducing red meat intake is commonly recommended. Limited observational studies suggest that healthy eating patterns with red meat are associated with improved quality of life. Objective The secondary objectives of this randomized crossover controlled-feeding trial were to assess the effects of following a Mediterranean-style eating pattern (Med-Pattern) with different amounts of red meat on indexes of personal well-being (i.e., perceived quality of life, mood, and sleep) in overweight or obese adults. We hypothesized that following a Med-Pattern would improve these outcomes, independent of red meat intake amount. Methods Forty-one participants [aged 46 ± 2 y; body mass index (kg/m2): 30.5 ± 0.6;n = 28 women,n = 13 men) were provided Med-Pattern foods for two 5-wk periods separated by 4 wk of self-selected eating. The Med-Red Pattern contained ∼500 g/wk (typical US intake), and the Med-Control Pattern contained ∼200 g/wk (commonly recommended intake in heart-healthy eating patterns) of lean, unprocessed beef or pork compensated with mainly poultry and dairy. Baseline and postintervention outcomes measured were perceived quality of life via the MOS 36-Item Short-Form Health Survey, version 2 (SF-36v2), daily mood states via the Profile of Mood States (POMS), sleep perceptions via the Pittsburgh Sleep Quality Index, and sleep patterns via actigraphy. Data were analyzed via a doubly repeated-measures ANOVA adjusted for age, sex, and body mass at each time point. Results Following a Med-Pattern did not change domains of physical health, mental health, total mood disturbances, sleep perceptions, and sleep patterns but improved subdomains of physical health role limitations (SF-36v2: 93.6–96.7%;P = 0.038), vitality (SF-36v2: 57.9–63.0%;P = 0.020), and fatigue (POMS: 2.9–2.5 arbitrary units;P = 0.039). There were no differences between the Med-Red and Med-Control Patterns (time × pattern,P-interaction > 0.05). Conclusion Following a Med-Pattern, independent of lean, unprocessed red meat intake, may not be an effective short-term strategy to meaningfully improve indexes of personal well-being in adults who are overweight or obese. This trial was registered atclinicaltrials.gov as NCT02573129.

scholarly journals Red Meat Intake and Risk of Rheumatoid Arthritis: A Categorical and Dose-Response Meta-Analysis

2021 ◽  
Author(s):  
WeiWei Chen ◽  
Ke Liu ◽  
Qing Su ◽  
Xinxian Sang ◽  
Yihan Hu ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Dose Response ◽  
Observational Studies ◽  
Meta Analysis ◽  
Red Meat ◽  
High Dose ◽  
Case Control Studies ◽  
Meat Intake ◽  
Red Meat Intake ◽  
The Impact

Abstract Objective: Findings from previous observational studies on the association between red meat intake and risk of rheumatoid arthritis (RA) are inconsistent. Therefore, we aimed to evaluate the impact of red meat intake on the incidence of RA by meta-analysis.Methods: PubMed and Web of Science were searched for eligible observational studies regarding the association between red meat intake and the risk of RA until June 30, 2021. Risk estimates with corresponding 95% confidence interval (95% CI) were pooled. Subgroup analysis and meta-regression analysis were performed to explore the potential sources of heterogeneity. Sensitivity analysis and publication bias test were also carried out.Results: A total of eleven studies were selected, involving 4 cohort studies with 5 203 identified cases from 349 776 individuals and 7 case-control studies with 3 762 cases and 6 856 controls. The pooled risk estimate of RA risk was 0.94 (95% CI: 0.77 to 1.15) for ever versus non/occasional red meat intake, while high dose of red meat intake increased the risk of RA (OR: 1.26, 95% CI: 1.07 to 1.50) in the categorical meta-analysis. Dose-response meta-analysis suggested a non-linear dose-response relationship between red meat intake and RA (P=0.028). Red meat intake was found to be a risk factor of RA when the dose ranged from 96 to 166 g/day.Conclusion: High dose of red meat intake could increase the risk of RA. Mechanistic studies are warranted to clarify the aetiologic pathways through which high dose of red meat intake may promote RA.

scholarly journals Red Meat Intake and Cardiometabolic Disease Risk: An Assessment of Causality Using The Bradford Hill Criteria

2020 ◽  
Vol 4 (Supplement_2) ◽  
pp. 31-31
Author(s):  
Erica Hill ◽  
Yu Wang ◽  
Caroline Clark ◽  
Bethany McGowen ◽  
Lauren O'Connor ◽  
...  
Keyword(s):  
Risk Factors ◽  
Experimental Evidence ◽  
Disease Risk ◽  
Red Meat ◽  
Cardiometabolic Disease ◽  
Short Term ◽  
Meat Intake ◽  
Cardiometabolic Diseases ◽  
Red Meat Intake ◽  
Cardiometabolic Disease Risk

Abstract Objectives Higher red meat intake is associated with increased risk of cardiometabolic diseases, but causation of this relationships is unclear. This umbrella systematic review qualitatively assessed causality between red meat intake and cardiometabolic diseases. Methods Two researchers independently screened and crosschecked 524 articles from MEDLINE, Scopus, Cochrane Library, and CINAHL up to November 25,2019. Articles included were systematic reviews and meta-analyses of observational or experimental studies using healthy subjects aged 19+ years; included red meat (RM) intake [total (TRM), unprocessed (URM), or processed (PRM)] as an a priori independent variable; and reported outcomes or risk factors of cardiovascular diseases (CVD) or type 2 diabetes mellitus (T2D). Causality was assessed using Bradford Hill's Causation Criteria: 1) strength (relative risk, RR ≥1.2), 2) consistency (≥67% of assessments), 3) specificity, 4) temporality, 5) biological dose-response gradient 6) plausibility, 7) coherence, 8) experimental evidence and 9) analogy. Results In total, 22 articles (16 with CVD data; 11 with T2D data) were included. While TRM and URM were statistically positively associated with CVD incidence and mortality, these associations were consistently weak (RR < 1.2). The strength of positive associations between TRM and T2D incidence were inconsistent while the positive associations between URM and T2D incidence were consistently weak. Results from short-term randomized controlled trials assessing effects of TRM and URM on CVD and T2D risk factors were predominately null. These experimental findings indicate a lack of coherence and need for more research to determine causality of the positive associations described above. For both CVD and T2D, temporality was established with the inclusion of prospective study designs. Researchers have proposed plausible biological mechanisms and analogies but specificity is lacking. Insufficient data precluded assessing causality between PRM and CVD or T2D; research is needed. Conclusions Weakness of associations between total and unprocessed red meat intake and cardiometabolic diseases and lack of coherence with short-term experimental evidence on cardiometabolic disease risk factors reduces confidence that associations are causal. Funding Sources The Beef Checkoff.

scholarly journals The impact of reduced red and processed meat consumption on cardiovascular risk factors; an intervention trial in healthy volunteers

2019 ◽  
Vol 10 (10) ◽  
pp. 6690-6698
Author(s):  
Elizabeth J. Simpson ◽  
Marie Clark ◽  
Azlina A. Razak ◽  
Andrew Salter
Keyword(s):  
Meat Consumption ◽  
Processed Meat ◽  
Intervention Trial ◽  
Short Term ◽  
Meat Intake ◽  
Cell Numbers ◽  
Red Meat Intake ◽  
The Impact ◽  
Processed Meat Consumption ◽  
Red And Processed Meat

Reductions in red meat intake lowered LDL in men, but may have unfavourable short term impact on blood cell numbers.

scholarly journals High Red Meat Intake Exacerbates Dextran Sulfate-Induced Colitis by Altering Gut Microbiota in Mice

2021 ◽  
Vol 8 ◽  
Author(s):  
Dan-ping Li ◽  
Min Cui ◽  
Fang Tan ◽  
Xiao-yan Liu ◽  
Ping Yao
Keyword(s):  
Inflammatory Cytokines ◽  
Relative Abundance ◽  
Dextran Sulfate ◽  
Dextran Sulfate Sodium ◽  
Underlying Mechanism ◽  
Red Meat ◽  
High Dose ◽  
High Intake ◽  
Meat Intake ◽  
Red Meat Intake

Inflammatory bowel disease (IBD) is a serious hazard to public health, but the precise etiology of the disease is unclear. High intake of red meat diet is closely related to the occurrence of IBD. In this study, we investigated whether the high intake of red meat can increase the sensitivity of colitis and the underlying mechanism. Mice were fed with different levels of red meat for 8 weeks and then the colonic contents were analyzed by 16S rRNA sequencing. Then 3% dextran sulfate sodium was used to induce colitis in mice. We observed the severity of colitis and inflammatory cytokines. We found that high-dose red meat caused intestinal microbiota disorder, reduced the relative abundance of Lachnospiraceae_NK4A136_group, Faecalibaculum, Blautia and Dubosiella, and increased the relative abundance of Bacteroides and Alistipes. This in turn leads to an increase in colitis and inflammatory cytokine secretion. Moreover, we found that high red meat intake impaired the colon barrier integrity and decreased the expression of ZO-1, claudin, and occludin. We also found high red meat intake induced the production of more inflammatory cytokines such as IL-1β, TNF-α, IL-17, and IL-6 and inflammatory inducible enzymes such as COX-2 and iNOS in dextran sulfate sodium-induced colitis. These results suggest that we should optimize the diet and reduce the intake of red meat to prevent the occurrence of IBD.

scholarly journals The impact of fixed orthodontic appliances on oral microbiome dynamics in Japanese patients

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Isamu Kado ◽  
Junzo Hisatsune ◽  
Keiko Tsuruda ◽  
Kotaro Tanimoto ◽  
Motoyuki Sugai
Keyword(s):  
Relative Abundance ◽  
Japanese Patients ◽  
Oral Microbiome ◽  
Orthodontic Appliances ◽  
Periodontal Pathogens ◽  
Supragingival Plaque ◽  
Fixed Orthodontic Appliances ◽  
Microbial Dna ◽  
The Impact ◽  
Level Analysis

AbstractFixed orthodontic appliances are common and effective tools to treat malocclusion. Adverse effects of these appliances, such as dental caries and periodontitis, may be associated with alteration of the microbiome. This study investigated the impact of these appliances on the dynamics of the oral microbiome. Seventy-one patients were selected. Supragingival plaque samples were collected before placement (T0) and six months after placement (T1). Saliva samples were collected at T0 and T1, and then when appliance removal (T2). Microbial DNA was analyzed by 16S rRNA meta-sequencing. The diversity analysis indicated dynamic changes in the structure of the oral microbiome. Taxonomic analysis at phylum level showed a significant increase in Bacteroidetes and Saccharibacteria (formally TM7) and decrease in Proteobacteria and Actinobacteria over time, in both plaque and saliva. Genus level analysis of relative abundance indicated a significant increase in anaerobic and facultative anaerobes in both plaque and saliva. Fixed orthodontic appliances induced measurable changes in the oral microbiome. This was characterized by an increase in relative abundance of obligate anaerobes, including periodontal pathogens. It can be concluded that this dysbiosis induced by fixed orthodontic appliances is likely to represent a transitional stage in the shift in microbiome from healthy to periodontitis.

scholarly journals Red meat intake is positively associated with non-fatal acute myocardial infarction in the Costa Rica Heart Study

2017 ◽  
Vol 118 (4) ◽  
pp. 303-311 ◽  
Author(s):  
Dongqing Wang ◽  
Hannia Campos ◽  
Ana Baylin
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Costa Rica ◽  
Meat Consumption ◽  
Red Meat ◽  
Health Concern ◽  
Meat Intake ◽  
Acute Mi ◽  
Red Meat Intake ◽  
Processed Red Meat

AbstractThe adverse effect of red meat consumption on the risk for CVD is a major population health concern, especially in developing Hispanic/Latino countries in which there are clear trends towards increased consumption. This population-based case–control study examined the associations between total, processed and unprocessed red meat intakes and non-fatal acute myocardial infarction (MI) in Costa Rica. The study included 2131 survivors of a first non-fatal acute MI and 2131 controls individually matched by age, sex and area of residence. Dietary intake was assessed with a FFQ. OR were estimated by using conditional logistic regression. Higher intakes of total and processed red meat were associated with increased odds of acute MI. The OR were 1·31 (95 % CI 1·04, 1·65) and 1·29 (95 % CI 1·01, 1·65) for the highest quintiles of total red meat (median: 110·8 g or 1 serving/d) and processed red meat intake (median: 36·1 g or 5 servings/week), respectively. There were increasing trends in the odds of acute MI with higher total (Ptrend=0·01) and processed (Ptrend=0·02) red meat intakes. Unprocessed red meat intake was not associated with increased odds of acute MI. Substitutions of 50 g of alternative foods (fish, milk, chicken without skin and chicken without fat) for 50 g of total, processed and unprocessed red meat were associated with lower odds of acute MI. The positive association between red meat intake and acute MI in Costa Rica highlights the importance of reducing red meat consumption in middle-income Hispanic/Latino populations.

Abstract P507: Interplay Between Diet and Gut Microbiota, and Circulating Levels of Trimethylamine N-oxide: Findings From the Men’s Lifestyle Validation Study

Circulation ◽  
2020 ◽  
Vol 141 (Suppl_1) ◽  
Author(s):  
Jun Li ◽  
Yanping Li ◽  
Kerry Ivey ◽  
Dong Wang ◽  
Jeremy Wilkinson ◽  
...  
Keyword(s):  
Validation Study ◽  
Microbial Metabolism ◽  
Red Meat ◽  
Cardiometabolic Health ◽  
Metagenomic Sequencing ◽  
Free Living ◽  
Meat Intake ◽  
Fecal Samples ◽  
Red Meat Intake ◽  
Cardiometabolic Traits

Background: Trimethylamine N-oxide (TMAO) is proposed as a possible culprit linking red meat intake and poor cardiovascular health. The relationship between diet, microbial metabolism, circulating TMAO levels, and cardiometabolic health in free-living individuals, is yet to be elucidated. Hypothesis: Specific microbial taxa may modulate associations of choline/L-carnitine and red meat intake with plasma TMAO levels and cardiometabolic traits. Method: We collected 2 pairs of fecal samples (n=925) and, simultaneously, 2 blood samples (n=473), 6 months apart, from 307 healthy men in the Men’s Lifestyle Validation Study in 2012. We performed Shotgun metagenomic sequencing using fecal samples and identified microbial taxonomic features using MetaPhlAn2. We measured hemoglobin A1c (HBA1c), and plasma levels of TMAO, lipids, and other cardiometabolic risk markers. Diet was assessed repeatedly using validated food-frequency questionnaires and dietary records. Results: Multivariable random-effect linear regressions identified 10 bacterial species that were significantly associated with TMAO levels ( FDR <0.05; Figure A ), and these species significantly modified the associations of dietary choline/L-carnitine and/or red meat intake with TMAO levels ( P interaction <0.05). In particular, Alistipes s hahii and Clostridium c itroniae significantly strengthened the association between red meat intake and TMAO levels, whereas Eubacterium b iforme attenuated this association ( P interaction <0.05). Consistently, the associations of higher red meat intake with higher HBA1c and lower high-density lipoprotein cholesterol levels were more pronounced in the presence of A. s hahii and C. c itroniae or in the absence of E. b ifome ( Figure B ). Conclusions: We identified microbial taxa that modify the associations of red meat intake with circulating TMAO levels and cardiometabolic traits, in free-living men, suggesting an interplay between diet and microbial metabolism in producing TMAO and affecting cardiometabolic health.

Different Frames to Reduce Red Meat Intake: The Moderating Role of Self-Efficacy

2019 ◽  
Vol 35 (4) ◽  
pp. 475-482 ◽  
Author(s):  
Mauro Bertolotti ◽  
Valentina Carfora ◽  
Patrizia Catellani
Keyword(s):  
Self Efficacy ◽  
Red Meat ◽  
Meat Intake ◽  
Red Meat Intake ◽  
Moderating Role
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