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Keirns BH, Medlin AR, Maki KA, McClanahan K, Fruit SE, Sciarrillo CM, Hart SM, Joyce J, Lucas EA, Emerson SR. Biomarkers of intestinal permeability are associated with inflammation in metabolically healthy obesity but not normal-weight obesity. Am J Physiol Heart Circ Physiol 2024; 327:H1135-H1145. [PMID: 39212768 DOI: 10.1152/ajpheart.00381.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2024] [Revised: 08/26/2024] [Accepted: 08/26/2024] [Indexed: 09/04/2024]
Abstract
Systemic inflammation is reported in normal-weight obesity (NWO) and metabolically healthy obesity (MHO), which may be linked to their increased cardiovascular disease (CVD) risk. Yet, drivers of this inflammation remain unclear. We characterized factors known to influence inflammatory status (i.e., intestinal permeability, adipose tissue, diet quality, microbiota), and their relationships with measured inflammation, in NWO and MHO, healthy control subjects (CON), and metabolically unhealthy obesity (MUO; N = 80; n = 20/group). Serum indicators of intestinal permeability and inflammation were assessed by ELISA and/or multiplex. Total, visceral, and percent body fat were measured with dual-energy X-ray absorptiometry (DXA). Fecal microbiota composition was assessed via 16S rRNA sequencing (n = 9-10/group). For C-reactive protein (CRP), MUO > NWO > CON (P < 0.0001). In MHO, CRP was intermediate and similar to both MUO and NWO. Lipopolysaccharide binding protein (LBP) and the ratio of LBP to soluble CD14 (sCD14) were higher in MHO and MUO vs. CON/NWO (P < 0.0001). Across correlation and regression analyses, LBP consistently displayed the strongest relationships with CRP in the entire sample (r = 0.78; β = 0.57; P < 0.0001) and in MHO (r = 0.74; P < 0.01) but not NWO (r = 0.37; P = 0.11). Shannon index was higher in CON compared with MUO (P < 0.05) and inversely correlated with CRP in the full sample (r = -0.37; P < 0.05). These data are consistent with the notion that intestinal permeability is associated with low-grade inflammation in MHO, which could be implicated in this population's reported CVD risk.NEW & NOTEWORTHY This is the first study to our knowledge to examine biomarkers of intestinal permeability in normal-weight obesity and one of few assessing microbiota compositions in this population. Additionally, we report that individuals with metabolically healthy obesity and metabolically unhealthy obesity displayed similar evidence of intestinal permeability, which was more strongly associated with systemic inflammation than total and visceral adipose tissue mass.
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Affiliation(s)
- Bryant H Keirns
- Department of Nutrition and Health Science, Ball State University, Muncie, Indiana, United States
| | - Austin R Medlin
- Department of Health & Wellness Design, Indiana University School of Public Health, Bloomington, Indiana, United States
| | - Katherine A Maki
- Translational Biobehavioral and Health Disparities Branch, National Institutes of Health Clinical Center, Bethesda, Maryland, United States
| | - Kristen McClanahan
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, Oklahoma, United States
| | - Sarah E Fruit
- Department of Nutrition and Health Science, Ball State University, Muncie, Indiana, United States
| | - Christina M Sciarrillo
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, Oklahoma, United States
| | - Samantha M Hart
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, Oklahoma, United States
| | - Jill Joyce
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, Oklahoma, United States
| | - Edralin A Lucas
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, Oklahoma, United States
| | - Sam R Emerson
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, Oklahoma, United States
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2
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Macura B, Kiecka A, Szczepanik M. Intestinal permeability disturbances: causes, diseases and therapy. Clin Exp Med 2024; 24:232. [PMID: 39340718 PMCID: PMC11438725 DOI: 10.1007/s10238-024-01496-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2024] [Accepted: 09/22/2024] [Indexed: 09/30/2024]
Abstract
Nowadays, a pathological increase in the permeability of the intestinal barrier (the so-called leaky gut) is increasingly being diagnosed. This condition can be caused by various factors, mainly from the external environment. Damage to the intestinal barrier entails a number of adverse phenomena: dysbiosis, translocation of microorganisms deep into the intestinal tissue, immune response, development of chronic inflammation. These phenomena can ultimately lead to a vicious cycle that promotes the development of inflammation and further damage to the barrier. Activated immune cells in mucosal tissues with broken barriers can migrate to other organs and negatively affect their functioning. Damaged intestinal barrier can facilitate the development of local diseases such as irritable bowel disease, inflammatory bowel disease or celiac disease, but also the development of systemic inflammatory diseases such as rheumatoid arthritis, ankylosing spondylitis, hepatitis, and lupus erythematosus, neurodegenerative or psychiatric conditions, or metabolic diseases such as diabetes or obesity. However, it must be emphasized that the causal links between a leaky gut barrier and the onset of certain diseases often remain unclear and require in-depth research. In light of recent research, it becomes crucial to prevent damage to the intestinal barrier, as well as to develop therapies for the barrier when it is damaged. This paper presents the current state of knowledge on the causes, health consequences and attempts to treat excessive permeability of the intestinal barrier.
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Affiliation(s)
- Barbara Macura
- Faculty of Health Sciences, Institute of Physiotherapy, Chair of Biomedical Sciences, Jagiellonian University Medical College, Kopernika 7a, 31-034, Kraków, Poland.
| | - Aneta Kiecka
- Faculty of Health Sciences, Institute of Physiotherapy, Chair of Biomedical Sciences, Jagiellonian University Medical College, Kopernika 7a, 31-034, Kraków, Poland
| | - Marian Szczepanik
- Faculty of Health Sciences, Institute of Physiotherapy, Chair of Biomedical Sciences, Jagiellonian University Medical College, Kopernika 7a, 31-034, Kraków, Poland
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3
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Snelson M, Vanuytsel T, Marques FZ. Breaking the Barrier: The Role of Gut Epithelial Permeability in the Pathogenesis of Hypertension. Curr Hypertens Rep 2024; 26:369-380. [PMID: 38662328 PMCID: PMC11324679 DOI: 10.1007/s11906-024-01307-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/12/2024] [Indexed: 04/26/2024]
Abstract
PURPOSE OF THE REVIEW To review what intestinal permeability is and how it is measured, and to summarise the current evidence linking altered intestinal permeability with the development of hypertension. RECENT FINDINGS Increased gastrointestinal permeability, directly measured in vivo, has been demonstrated in experimental and genetic animal models of hypertension. This is consistent with the passage of microbial substances to the systemic circulation and the activation of inflammatory pathways. Evidence for increased gut permeability in human hypertension has been reliant of a handful of blood biomarkers, with no studies directly measuring gut permeability in hypertensive cohorts. There is emerging literature that some of these putative biomarkers may not accurately reflect permeability of the gastrointestinal tract. Data from animal models of hypertension support they have increased gut permeability; however, there is a dearth of conclusive evidence in humans. Future studies are needed that directly measure intestinal permeability in people with hypertension.
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Affiliation(s)
- Matthew Snelson
- Hypertension Research Laboratory, School of Biological Sciences, Monash University, Melbourne, Australia
- Victorian Heart Institute, Monash University, Melbourne, Australia
| | - Tim Vanuytsel
- Translational Research Center for Gastrointestinal Disorders, Department of Chronic Diseases and Metabolism, KU Leuven, Leuven, Belgium
- Department of Gastroenterology and Hepatology, University Hospitals Leuven, Leuven, Belgium
| | - Francine Z Marques
- Hypertension Research Laboratory, School of Biological Sciences, Monash University, Melbourne, Australia.
- Victorian Heart Institute, Monash University, Melbourne, Australia.
- Heart Failure Research Group, Baker Heart and Diabetes Institute, Melbourne, Australia.
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Xue M, Leibovitzh H, Jingcheng S, Neustaeter A, Dong M, Xu W, Espin-Garcia O, Griffiths AM, Steinhart AH, Turner D, Huynh HQ, Dieleman LA, Panaccione R, Aumais G, Bressler B, Bitton A, Murthy S, Marshall JK, Hyams JS, Otley A, Bernstein CN, Moayyedi P, El-Matary W, Fich A, Denson LA, Ropeleski MJ, Abreu MT, Deslandres C, Cino M, Avni-Biron I, Lee SH, Turpin W, Croitoru K. Environmental Factors Associated With Risk of Crohn's Disease Development in the Crohn's and Colitis Canada - Genetic, Environmental, Microbial Project. Clin Gastroenterol Hepatol 2024; 22:1889-1897.e12. [PMID: 38759825 DOI: 10.1016/j.cgh.2024.03.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 03/27/2024] [Accepted: 03/29/2024] [Indexed: 05/19/2024]
Abstract
BACKGROUND & AIMS To date, it is unclear how environmental factors influence Crohn's disease (CD) risk and how they interact with biological processes. This study investigates the association between environmental exposures and CD risk and evaluates their association with pre-disease biomarkers. METHODS We studied 4289 healthy first-degree relatives (FDRs) of patients with CD from the Crohn's and Colitis Canada - Genetic, Environmental, Microbial (CCC-GEM) project. Regression models identified environmental factors associated with future CD onset and their association with pre-disease biological factors, including altered intestinal permeability measured by urinary fractional excretion of lactulose to mannitol ratio (LMR); gut inflammation via fecal calprotectin (FCP) levels; and fecal microbiome composition through 16S rRNA sequencing. RESULTS Over a 5.62-year median follow-up, 86 FDRs developed CD. Living with a dog between ages 5 and 15 (hazard ratio [HR], 0.62; 95% confidence interval [CI], 0.40-0.96; P = .034), and living with a large family size in the first year of life (HR, 0.43; 95% CI, 0.21-0.85; P = .016) were associated with decreased CD risk, whereas having a bird at the time of recruitment (HR, 2.78; 95% CI, 1.36-5.68; P = .005) was associated with an increased CD risk. Furthermore, living with a dog was associated with reduced LMR, altered relative abundance of multiple bacterial genera, and increased Chao1 diversity, whereas bird owners had higher FCP levels. Large family during participants' first year of life was associated with altered microbiota composition without affecting FCP or LMR. CONCLUSION This study identifies environmental variables associated with CD risk. These variables were also associated with altered barrier function, subclinical inflammation, and gut microbiome composition shifts, suggesting potential roles in CD pathogenesis.
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Affiliation(s)
- Mingyue Xue
- Zane Cohen Centre for Digestive Diseases, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Haim Leibovitzh
- Zane Cohen Centre for Digestive Diseases, Mount Sinai Hospital, Toronto, Ontario, Canada; Division of Gastroenterology & Hepatology, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Shao Jingcheng
- Division of Biostatistics, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Anna Neustaeter
- Zane Cohen Centre for Digestive Diseases, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Mei Dong
- Division of Biostatistics, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Wei Xu
- Division of Biostatistics, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Osvaldo Espin-Garcia
- Department of Epidemiology and Biostatistics, Western University, London, Ontario, Canada
| | - Anne M Griffiths
- IBD Center, The Hospital for Sick Children, Department of Paediatrics, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - A Hillary Steinhart
- Zane Cohen Centre for Digestive Diseases, Mount Sinai Hospital, Toronto, Ontario, Canada; Division of Gastroenterology & Hepatology, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Dan Turner
- The Juliet Keidan Institute of Pediatric Gastroenterology and Nutrition, Shaare Zedek Medical Center, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Hien Q Huynh
- Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada
| | - Levinus A Dieleman
- Centre of Excellence for Gastrointestinal Inflammation and Immunity Research, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Remo Panaccione
- Inflammatory Bowel Disease Clinic, Division of Gastroenterology and Hepatology of Gastroenterology, University of Calgary, Calgary, Alberta, Canada
| | - Guy Aumais
- Hôspital Maisonneuve-Rosemont, Department of Medicine, Montreal University, Montreal, Quebec, Canada
| | - Brian Bressler
- Division of Gastroenterology, Department of Medicine, St Paul's Hospital, Vancouver, British Columbia
| | - Alain Bitton
- Division of Gastroenterology and Hepatology, McGill University Health Centre, McGill University, Montreal, Quebec, Canada
| | - Sanjay Murthy
- The Ottawa Hospital IBD Centre, Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - John K Marshall
- Department of Medicine, McMaster University, Farncombe Family Digestive Health Research Institute, Hamilton, Ontario, Canada
| | - Jeffrey S Hyams
- Division of Digestive Diseases, Hepatology, and Nutrition, Connecticut Children's Medical Center, Hartford, Connecticut
| | - Anthony Otley
- Department of Pediatrics, IWK Health Centre, Halifax, Nova Scotia, Canada
| | - Charles N Bernstein
- Inflammatory Bowel Disease Clinical and Research Centre, and Department of Internal Medicine, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Paul Moayyedi
- Department of Medicine, McMaster University, Farncombe Family Digestive Health Research Institute, Hamilton, Ontario, Canada
| | - Wael El-Matary
- Section of Pediatric Gastroenterology, Department of Pediatrics and Child Health, Max Rady College of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Alexander Fich
- Department of Gastroenterology and Hepatology, Soroka University Medical Center, Beer-Sheva, Israel
| | - Lee A Denson
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Mark J Ropeleski
- Gastrointestinal Diseases Research Unit, Departments of Medicine, Anatomy and Cell Biology, and Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
| | - Maria T Abreu
- Division of Gastroenterology, University of Miami Miller School of Medicine, Miami, Florida
| | - Colette Deslandres
- Department of Pediatric Gastroenterology, Hepatology, and Nutrition, Centre Hospitalier Universitaire, Sainte-Justine, Montréal, Quebec, Canada
| | - Maria Cino
- Division of Gastroenterology, University Health Network, Toronto, Ontario, Canada
| | - Irit Avni-Biron
- Division of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel
| | - Sun-Ho Lee
- Zane Cohen Centre for Digestive Diseases, Mount Sinai Hospital, Toronto, Ontario, Canada; Division of Gastroenterology & Hepatology, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Williams Turpin
- Zane Cohen Centre for Digestive Diseases, Mount Sinai Hospital, Toronto, Ontario, Canada; Division of Gastroenterology & Hepatology, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.
| | - Kenneth Croitoru
- Zane Cohen Centre for Digestive Diseases, Mount Sinai Hospital, Toronto, Ontario, Canada; Division of Gastroenterology & Hepatology, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.
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Quaresma MVLDS, Mancin L, Paoli A, Mota JF. The interplay between gut microbiome and physical exercise in athletes. Curr Opin Clin Nutr Metab Care 2024; 27:428-433. [PMID: 39083429 DOI: 10.1097/mco.0000000000001056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/02/2024]
Abstract
PURPOSE OF REVIEW The gut microbiome regulates several health and disease-related processes. However, the potential bidirectional relationship between the gut microbiome and physical exercise remains uncertain. Here, we review the evidence related to the gut microbiome in athletes. RECENT FINDINGS The effect of physical exercise on the intestinal microbiome and intestinal epithelial cells depends on the type, volume, and intensity of the activity. Strenuous exercise negatively impacts the intestinal microbiome, but adequate training and dietary planning could mitigate these effects. An increase in short-chain fatty acids (SCFAs) concentrations can modulate signaling pathways in skeletal muscle, contributing to greater metabolic efficiency, preserving muscle glycogen, and consequently optimizing physical performance and recovery. Furthermore, higher SCFAs concentrations appear to lower inflammatory response, consequently preventing an exacerbated immune response and reducing the risk of infections among athletes. Regarding dietary interventions, the optimal diet composition for targeting the athlete's microbiome is not yet known. Likewise, the benefits or harms of using probiotics, synbiotics, and postbiotics are not well established, whereas prebiotics appear to optimize SCFAs production. SUMMARY The intestinal microbiome plays an important role in modulating health, performance, and recovery in athletes. SCFAs appear to be the main intestinal metabolite related to these effects. Nutritional strategies focusing on the intestinal microbiome need to be developed and tested in well controlled clinical trials.
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Affiliation(s)
| | - Laura Mancin
- Department of Biomedical Sciences
- Human Inspired Technology Research Center HIT, University of Padua, Padua, Italy
| | - Antonio Paoli
- Department of Biomedical Sciences
- Human Inspired Technology Research Center HIT, University of Padua, Padua, Italy
| | - João Felipe Mota
- School of Nutrition, Federal University of Goias, Goiânia, GO, Brazil
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Kistler W, Villiger M, Villiger B, Yazici D, Pat Y, Mitamura Y, Ardicli S, Skolnick S, Dhir R, Akdis M, Nadeau K, Ogulur I, Akdis CA. Epithelial barrier theory in the context of nutrition and environmental exposure in athletes. Allergy 2024. [PMID: 39011970 DOI: 10.1111/all.16221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 06/18/2024] [Accepted: 06/28/2024] [Indexed: 07/17/2024]
Abstract
Exposure to toxic substances, introduced into our daily lives during industrialization and modernization, can disrupt the epithelial barriers in the skin, respiratory, and gastrointestinal systems, leading to microbial dysbiosis and inflammation. Athletes and physically active individuals are at increased risk of exposure to agents that damage the epithelial barriers and microbiome, and their extreme physical exercise exerts stress on many organs, resulting in tissue damage and inflammation. Epithelial barrier-damaging substances include surfactants and enzymes in cleaning products, laundry and dishwasher detergents, chlorine in swimming pools, microplastics, air pollutants such as ozone, particulate matter, and diesel exhaust. Athletes' high-calorie diet often relies on processed foods that may contain food emulsifiers and other additives that may cause epithelial barrier dysfunction and microbial dysbiosis. The type of the material used in the sport equipment and clothing and their extensive exposure may increase the inflammatory effects. Excessive travel-related stress, sleep disturbances and different food and microbe exposure may represent additional factors. Here, we review the detrimental impact of toxic agents on epithelial barriers and microbiome; bring a new perspective on the factors affecting the health and performance of athletes and physically active individuals.
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Affiliation(s)
- Walter Kistler
- Medical Committee International Ice Hockey Federation, Zürich, Switzerland
- Swiss Research Institute for Sports Medicine (SRISM), Davos, Switzerland
- Department of Sports Medicine, Davos Hospital, Davos, Switzerland
| | - Michael Villiger
- Swiss Research Institute for Sports Medicine (SRISM), Davos, Switzerland
- Department of Sports Medicine, Davos Hospital, Davos, Switzerland
| | - Beat Villiger
- Swiss Research Institute for Sports Medicine (SRISM), Davos, Switzerland
- Department of Sports Medicine, Davos Hospital, Davos, Switzerland
| | - Duygu Yazici
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Yagiz Pat
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Yasutaka Mitamura
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Sena Ardicli
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Stephen Skolnick
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
- Seed Health Inc., Los Angeles, California, USA
| | - Raja Dhir
- Seed Health Inc., Los Angeles, California, USA
| | - Mübeccel Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Kari Nadeau
- Department of Environmental Health, T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts, USA
| | - Ismail Ogulur
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Cezmi A Akdis
- Swiss Research Institute for Sports Medicine (SRISM), Davos, Switzerland
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
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Ulluwishewa D, Nicholls G, Henderson H, Bernstein D, Fraser K, Barnett MPG, Barnes MJ. Effects of bovine whey protein on exercise-induced gut permeability in healthy adults: a randomised controlled trial. Eur J Appl Physiol 2024; 124:2045-2056. [PMID: 38386104 PMCID: PMC11199293 DOI: 10.1007/s00421-024-05423-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 01/16/2024] [Indexed: 02/23/2024]
Abstract
PURPOSE Intestinal permeability is a critical component of gut barrier function. Barrier dysfunction can be triggered by certain stressors such as exercise, and if left unmanaged can lead to local and systemic disorders. The aim of this study was to investigate the effects of a specific whey protein fraction in alleviating exercise-induced gut permeability as assessed by recovery of lactulose/rhamnose (L/R) and lactulose/mannitol (L/M) urinary probes. METHODS Eight males and eight females (aged 18-50) completed two arms of a double-blind, placebo-controlled, crossover study. For each arm participants performed two baseline intestinal permeability assessments, following which they consumed the treatment (2 g/day of milk powder containing 200 mg of whey protein) or placebo (2 g/day of milk powder) for 14 days, before performing a post-exercise permeability assessment. The exercise protocol involved a 20-min run at 80% of maximal oxygen uptake on a 1% incline. RESULTS Mixed model analysis revealed an increase in L/R (23%; P < 0.001) and L/M (20%; P < 0.01) recovery following exercise. However, there was no treatment or treatment × exercise effect. CONCLUSION The exercise protocol utilised in our study induces gut permeability. However, consuming whey protein, at the dose and timing prescribed, is not able to mitigate this effect.
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Affiliation(s)
| | - Grayson Nicholls
- School of Sport, Exercise and Nutrition, Massey University, Palmerston North, New Zealand
| | | | | | - Karl Fraser
- AgResearch, Te Ohu Rangahau Kai, Palmerston North, New Zealand
| | - Matthew P G Barnett
- AgResearch, Te Ohu Rangahau Kai, Palmerston North, New Zealand
- Riddet Institute, Palmerston North, New Zealand
| | - Matthew J Barnes
- School of Sport, Exercise and Nutrition, Massey University, Palmerston North, New Zealand
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Qaisar R, Iqbal MS, Karim A, Ahmad F. Resistance Exercise Reduces Sarcopenia by Repairing Leaky Gut in Patients with Alzheimer's Disease. Arch Med Res 2024; 55:103025. [PMID: 38879906 DOI: 10.1016/j.arcmed.2024.103025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 05/26/2024] [Accepted: 06/05/2024] [Indexed: 06/18/2024]
Abstract
PURPOSE Sarcopenia or age-associated muscle loss is common in patients with Alzheimer's disease (AD). We have previously demonstrated the contribution of a leaky gut to sarcopenia in AD. Here, we asked whether resistant exercise (RE) reduces the sarcopenia phenotype by repairing intestinal leakage in patients with AD. METHOD A prospective, single-center study of older adults, including healthy controls and patients with AD (n = 44-51/group), was conducted to measure plasma zonulin and claudin-3 (markers of intestinal leakage), handgrip strength (HGS), and short physical performance battery (SPPB) as a measure of functional capacity. Measurements in patients with AD were performed at baseline and after 12 weeks of RE. RESULTS At baseline, patients with AD had higher plasma zonulin and claudin-3 and lower HGS, gait speed, and SPPB scores than controls. RE reduced plasma zonulin and claudin-3 levels and improved HGS, SPPB scores, and gait speed. Regression analysis revealed robust relationships between changes in plasma zonulin and claudin-3 with HGS. Plasma zonulin was also positively associated with SPPB scores. In addition, RE downregulated plasma markers of inflammation and oxidative stress. However, the prevalence of sarcopenia based on low HGS and muscle atrophy or low SPPB was not affected by RE. CONCLUSION Taken together, disruption of the intestinal mucosal barrier may contribute to functional decline and sarcopenia in AD, which is incompletely recovered by RE. Circulating levels of zonulin and claudin-3 may be valuable in predicting sarcopenia and functional capacity in older adults with AD.
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Affiliation(s)
- Rizwan Qaisar
- Departmen of Basic Medical Sciences, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates; Cardiovascular Research Group, Research Institute of Medical and Health Science, University of Sharjah, Sharjah, United Arab Emirates.
| | - M Shahid Iqbal
- Department of Neurology and Stroke Medicine, Rehman Medical Institute, Peshawar, Pakistan
| | - Asima Karim
- Departmen of Basic Medical Sciences, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - Firdos Ahmad
- Departmen of Basic Medical Sciences, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates; Cardiovascular Research Group, Research Institute of Medical and Health Science, University of Sharjah, Sharjah, United Arab Emirates
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Vandecruys M, De Smet S, De Beir J, Renier M, Leunis S, Van Criekinge H, Glorieux G, Raes J, Vanden Wyngaert K, Nagler E, Calders P, Monbaliu D, Cornelissen V, Evenepoel P, Van Craenenbroeck AH. Revitalizing the Gut Microbiome in Chronic Kidney Disease: A Comprehensive Exploration of the Therapeutic Potential of Physical Activity. Toxins (Basel) 2024; 16:242. [PMID: 38922137 PMCID: PMC11209503 DOI: 10.3390/toxins16060242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 05/16/2024] [Accepted: 05/20/2024] [Indexed: 06/27/2024] Open
Abstract
Both physical inactivity and disruptions in the gut microbiome appear to be prevalent in patients with chronic kidney disease (CKD). Engaging in physical activity could present a novel nonpharmacological strategy for enhancing the gut microbiome and mitigating the adverse effects associated with microbial dysbiosis in individuals with CKD. This narrative review explores the underlying mechanisms through which physical activity may favorably modulate microbial health, either through direct impact on the gut or through interorgan crosstalk. Also, the development of microbial dysbiosis and its interplay with physical inactivity in patients with CKD are discussed. Mechanisms and interventions through which physical activity may restore gut homeostasis in individuals with CKD are explored.
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Affiliation(s)
- Marieke Vandecruys
- Nephrology and Renal Transplantation Research Group, Department of Microbiology, Immunology and Transplantation, KU Leuven, 3000 Leuven, Belgium; (M.V.); or (P.E.)
| | - Stefan De Smet
- Exercise Physiology Research Group, Department of Movement Sciences, KU Leuven, 3000 Leuven, Belgium;
| | - Jasmine De Beir
- Department of Rehabilitation Sciences, Ghent University, 9000 Ghent, Belgium; (J.D.B.); (P.C.)
| | - Marie Renier
- Group Rehabilitation for Internal Disorders, Department of Rehabilitation Sciences, KU Leuven, 3000 Leuven, Belgium; (M.R.); (V.C.)
| | - Sofie Leunis
- Department of Microbiology, Immunology and Transplantation, Abdominal Transplantation, KU Leuven, 3000 Leuven, Belgium; (S.L.); (H.V.C.); (D.M.)
| | - Hanne Van Criekinge
- Department of Microbiology, Immunology and Transplantation, Abdominal Transplantation, KU Leuven, 3000 Leuven, Belgium; (S.L.); (H.V.C.); (D.M.)
| | - Griet Glorieux
- Department of Internal Medicine and Pediatrics, Nephrology Section, Ghent University Hospital, 9000 Ghent, Belgium; (G.G.); (K.V.W.); (E.N.)
| | - Jeroen Raes
- Department of Microbiology and Immunology, Rega Institute for Medical Research, 3000 Leuven, Belgium;
- VIB-KU Leuven Center for Microbiology, 3000 Leuven, Belgium
| | - Karsten Vanden Wyngaert
- Department of Internal Medicine and Pediatrics, Nephrology Section, Ghent University Hospital, 9000 Ghent, Belgium; (G.G.); (K.V.W.); (E.N.)
| | - Evi Nagler
- Department of Internal Medicine and Pediatrics, Nephrology Section, Ghent University Hospital, 9000 Ghent, Belgium; (G.G.); (K.V.W.); (E.N.)
| | - Patrick Calders
- Department of Rehabilitation Sciences, Ghent University, 9000 Ghent, Belgium; (J.D.B.); (P.C.)
| | - Diethard Monbaliu
- Department of Microbiology, Immunology and Transplantation, Abdominal Transplantation, KU Leuven, 3000 Leuven, Belgium; (S.L.); (H.V.C.); (D.M.)
- Transplantoux Foundation, 3000 Leuven, Belgium
| | - Véronique Cornelissen
- Group Rehabilitation for Internal Disorders, Department of Rehabilitation Sciences, KU Leuven, 3000 Leuven, Belgium; (M.R.); (V.C.)
| | - Pieter Evenepoel
- Nephrology and Renal Transplantation Research Group, Department of Microbiology, Immunology and Transplantation, KU Leuven, 3000 Leuven, Belgium; (M.V.); or (P.E.)
- Department of Nephrology, University Hospitals Leuven, 3000 Leuven, Belgium
| | - Amaryllis H. Van Craenenbroeck
- Nephrology and Renal Transplantation Research Group, Department of Microbiology, Immunology and Transplantation, KU Leuven, 3000 Leuven, Belgium; (M.V.); or (P.E.)
- Department of Nephrology, University Hospitals Leuven, 3000 Leuven, Belgium
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10
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Jones R, Robinson AT, Beach LB, Lindsey ML, Kirabo A, Hinton A, Erlandson KM, Jenkins ND. Exercise to Prevent Accelerated Vascular Aging in People Living With HIV. Circ Res 2024; 134:1607-1635. [PMID: 38781293 PMCID: PMC11126195 DOI: 10.1161/circresaha.124.323975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Given advances in antiretroviral therapy, the mortality rate for HIV infection has dropped considerably over recent decades. However, people living with HIV (PLWH) experience longer life spans coupled with persistent immune activation despite viral suppression and potential toxicity from long-term antiretroviral therapy use. Consequently, PLWH face a cardiovascular disease (CVD) risk more than twice that of the general population, making it the leading cause of death among this group. Here, we briefly review the epidemiology of CVD in PLWH highlighting disparities at the intersections of sex and gender, age, race/ethnicity, and the contributions of social determinants of health and psychosocial stress to increased CVD risk among individuals with marginalized identities. We then overview the pathophysiology of HIV and discuss the primary factors implicated as contributors to CVD risk among PLWH on antiretroviral therapy. Subsequently, we highlight the functional evidence of premature vascular dysfunction as an early pathophysiological determinant of CVD risk among PLWH, discuss several mechanisms underlying premature vascular dysfunction in PLWH, and synthesize current research on the pathophysiological mechanisms underlying accelerated vascular aging in PLWH, focusing on immune activation, chronic inflammation, and oxidative stress. We consider understudied aspects such as HIV-related changes to the gut microbiome and psychosocial stress, which may serve as mechanisms through which exercise can abrogate accelerated vascular aging. Emphasizing the significance of exercise, we review various modalities and their impacts on vascular health, proposing a holistic approach to managing CVD risks in PLWH. The discussion extends to critical future study areas related to vascular aging, CVD, and the efficacy of exercise interventions, with a call for more inclusive research that considers the diversity of the PLWH population.
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Affiliation(s)
- Raymond Jones
- Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL
| | | | - Lauren B. Beach
- Department of Medical Social Sciences, Northwestern, Chicago, IL
- Department of Preventive Medicine, Northwestern, Chicago, IL
| | - Merry L. Lindsey
- School of Graduate Studies, Meharry Medical College, Nashville, TN
- Research Service, Nashville VA Medical Center, Nashville, TN
| | - Annet Kirabo
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN
- Vanderbilt Center for Immunobiology, Nashville, TN
- Vanderbilt Institute for Infection, Immunology and Inflammation, Nashville, TN
- Vanderbilt Institute for Global Health, Nashville, TN
| | - Antentor Hinton
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN
| | | | - Nathaniel D.M. Jenkins
- Department of Health and Human Physiology, University of Iowa, Iowa City, IA
- Abboud Cardiovascular Research Center, University of Iowa, Iowa City, IA
- Fraternal Order of Eagles Diabetes Research Center, University of Iowa, Iowa City, IA
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11
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Roca Rubio MF, Folkesson M, Kremp C, Evertsson N, Repsilber D, Eriksson U, Ganda Mall J, Kadi F, Brummer RJ, König J. Associations between various markers of intestinal barrier and immune function after a high-intensity exercise challenge. Physiol Rep 2024; 12:e16087. [PMID: 38783385 PMCID: PMC11116166 DOI: 10.14814/phy2.16087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 05/09/2024] [Accepted: 05/09/2024] [Indexed: 05/25/2024] Open
Abstract
Strenuous exercise can result in disruption of intestinal barrier function and occurrence of gastrointestinal symptoms. The aim of this exploratory study was to elucidate systemic effects of increased intestinal permeability after high-intensity exercise. Forty-one endurance-trained subjects performed a 60-min treadmill run at 80% VO2max. Small intestinal permeability was measured as urinary excretion ratio of lactulose/rhamnose (L/R). Blood, saliva and feces were analyzed for gut barrier and immune-related biomarkers. The exercise challenge increased several markers of intestinal barrier disruption, immune function and oxidative stress. We found a negative correlation between L/R ratio and uric acid (r = -0.480), as well as a positive correlation between the L/R ratio and fecal chromogranin A in male participants (r = 0.555). No significant correlations were found between any of the markers and gastrointestinal symptoms, however, perceived exertion correlated with the combination of IL-6, IL-10 and salivary cortisol (r = 0.492). The lack of correlation between intestinal permeability and gastrointestinal symptoms could be due to minor symptoms experienced in lab settings compared to real-life competitions. The correlation between L/R ratio and uric acid might imply a barrier-protective effect of uric acid, and inflammatory processes due to strenuous exercise seem to play an important role regarding physical exhaustion.
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Affiliation(s)
- Maria Fernanda Roca Rubio
- Nutrition‐Gut‐Brain Interactions Research Centre, School of Medical Sciences, Faculty of Medicine and HealthÖrebro UniversityÖrebroSweden
| | - Mattias Folkesson
- Division of Sports Sciences, School of Health Sciences, Faculty of Medicine and HealthÖrebro UniversityÖrebroSweden
| | - Carolin Kremp
- Nutrition‐Gut‐Brain Interactions Research Centre, School of Medical Sciences, Faculty of Medicine and HealthÖrebro UniversityÖrebroSweden
| | - Niklas Evertsson
- Nutrition‐Gut‐Brain Interactions Research Centre, School of Medical Sciences, Faculty of Medicine and HealthÖrebro UniversityÖrebroSweden
| | - Dirk Repsilber
- Nutrition‐Gut‐Brain Interactions Research Centre, School of Medical Sciences, Faculty of Medicine and HealthÖrebro UniversityÖrebroSweden
| | - Ulrika Eriksson
- Man‐Technology‐Environment (MTM) Research Centre, School of Science and TechnologyÖrebro UniversityÖrebroSweden
| | - John‐Peter Ganda Mall
- Nutrition‐Gut‐Brain Interactions Research Centre, School of Medical Sciences, Faculty of Medicine and HealthÖrebro UniversityÖrebroSweden
| | - Fawzi Kadi
- Division of Sports Sciences, School of Health Sciences, Faculty of Medicine and HealthÖrebro UniversityÖrebroSweden
| | - Robert J. Brummer
- Nutrition‐Gut‐Brain Interactions Research Centre, School of Medical Sciences, Faculty of Medicine and HealthÖrebro UniversityÖrebroSweden
| | - Julia König
- Nutrition‐Gut‐Brain Interactions Research Centre, School of Medical Sciences, Faculty of Medicine and HealthÖrebro UniversityÖrebroSweden
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12
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Hastings MH, Castro C, Freeman R, Abdul Kadir A, Lerchenmüller C, Li H, Rhee J, Roh JD, Roh K, Singh AP, Wu C, Xia P, Zhou Q, Xiao J, Rosenzweig A. Intrinsic and Extrinsic Contributors to the Cardiac Benefits of Exercise. JACC Basic Transl Sci 2024; 9:535-552. [PMID: 38680954 PMCID: PMC11055208 DOI: 10.1016/j.jacbts.2023.07.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 07/06/2023] [Accepted: 07/20/2023] [Indexed: 05/01/2024]
Abstract
Among its many cardiovascular benefits, exercise training improves heart function and protects the heart against age-related decline, pathological stress, and injury. Here, we focus on cardiac benefits with an emphasis on more recent updates to our understanding. While the cardiomyocyte continues to play a central role as both a target and effector of exercise's benefits, there is a growing recognition of the important roles of other, noncardiomyocyte lineages and pathways, including some that lie outside the heart itself. We review what is known about mediators of exercise's benefits-both those intrinsic to the heart (at the level of cardiomyocytes, fibroblasts, or vascular cells) and those that are systemic (including metabolism, inflammation, the microbiome, and aging)-highlighting what is known about the molecular mechanisms responsible.
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Affiliation(s)
- Margaret H. Hastings
- Institute for Heart and Brain Health, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Claire Castro
- Cardiovascular Research Center, Division of Cardiology, Corrigan Minehan Heart Center, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Rebecca Freeman
- Cardiovascular Research Center, Division of Cardiology, Corrigan Minehan Heart Center, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Azrul Abdul Kadir
- Cardiovascular Research Center, Division of Cardiology, Corrigan Minehan Heart Center, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Carolin Lerchenmüller
- Department of Cardiology, University Hospital Heidelberg, German Center for Cardiovascular Research (DZHK), Partner Site Heidelberg/Mannheim, Heidelberg, Germany
| | - Haobo Li
- Cardiovascular Research Center, Division of Cardiology, Corrigan Minehan Heart Center, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - James Rhee
- Cardiovascular Research Center, Division of Cardiology, Corrigan Minehan Heart Center, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Department of Anesthesiology and Critical Care, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Jason D. Roh
- Cardiovascular Research Center, Division of Cardiology, Corrigan Minehan Heart Center, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Kangsan Roh
- Cardiovascular Research Center, Division of Cardiology, Corrigan Minehan Heart Center, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Department of Anesthesiology and Critical Care, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Anand P. Singh
- Institute for Heart and Brain Health, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Chao Wu
- Institute for Heart and Brain Health, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Peng Xia
- Cardiovascular Research Center, Division of Cardiology, Corrigan Minehan Heart Center, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Qiulian Zhou
- Institute for Heart and Brain Health, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Junjie Xiao
- Cardiac Regeneration and Ageing Lab, Institute of Cardiovascular Sciences, School of Life Science, Shanghai University, Shanghai, China
| | - Anthony Rosenzweig
- Institute for Heart and Brain Health, University of Michigan Medical Center, Ann Arbor, Michigan, USA
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13
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Hajihashemi P, Haghighatdoost F, Kassaian N, Hoveida L, Tamizifar B, Nili H, Rahim Khorasani M, Adibi P. Bovine Colostrum in Increased Intestinal Permeability in Healthy Athletes and Patients: A Meta-Analysis of Randomized Clinical Trials. Dig Dis Sci 2024; 69:1345-1360. [PMID: 38361147 DOI: 10.1007/s10620-023-08219-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 11/27/2023] [Indexed: 02/17/2024]
Abstract
BACKGROUND Increasing intestinal permeability causes chronic inflammation, which is one of the etiological factors of many diseases that presently constitute global challenges. AIMS Considering the importance of developing therapies to eliminate the increased intestinal permeability, in this systematic review and meta-analysis, we analyze the impact of bovine colostrum (BC) on the gut barrier and its permeability. METHODS Online databases, including PubMed, ISI Web of Science, and Scopus, were searched to find pertinent articles up to March 2022. Weighted mean difference (WMD) and 95% confidence intervals (CI) were considered as effect sizes. The random-effects model was used to pool the study results. RESULTS A total of ten articles were included in the meta-analysis. The pooled effect revealed a significant reduction in the 5-h urinary lactulose/rhamnose ratio after BC consumption [mean difference (MD): -0.24; 95% CI -0.43 to -0.04; I2 = 99%] and urinary lactulose/mannitol ratio (MD: -0.01; 95% CI -0.02 to -0.001; I2 = 29.8%). No differences were observed in the plasma intestinal fatty acid-binding protein (I-FABP) between BC and control groups (MD: 2.30; 95% CI -293.9 to 298.5; I2 = 92%). CONCLUSIONS BC supplementation significantly reduced intestinal permeability; however, to confirm the results, more randomized clinical trials considering different quality, dose, and duration are needed.
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Affiliation(s)
- Parisa Hajihashemi
- Isfahan Gastroenterology and Hepatology Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Fahimeh Haghighatdoost
- Isfahan Cardiovascular Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Nazila Kassaian
- Nosocomial Infection Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Laleh Hoveida
- Department of Microbiology, Falavarjan Branch, Islamic Azad University, PO Box: 84515/155, Isfahan, Iran.
| | - Babak Tamizifar
- Isfahan Gastroenterology and Hepatology Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Hassan Nili
- Zeitoon Vaccine Innovators Company, Isfahan Town of Science and Technology, Isfahan, Iran
| | - Marzieh Rahim Khorasani
- Infectious Diseases and Tropical Medicine Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Peyman Adibi
- Isfahan Gastroenterology and Hepatology Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
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14
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Ducharme JB, McKenna ZJ, Specht JW, Fennel ZJ, Berkemeier QN, Deyhle MR. Divergent mechanisms regulate TLR4 expression on peripheral blood mononuclear cells following workload-matched exercise in normoxic and hypoxic environments. J Appl Physiol (1985) 2024; 136:33-42. [PMID: 37994415 DOI: 10.1152/japplphysiol.00626.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/06/2023] [Accepted: 11/19/2023] [Indexed: 11/24/2023] Open
Abstract
Exercise in hypoxia increases immune responses compared with normoxic exercise, and while Toll-like receptor 4 (TLR4) is implicated in these responses, its regulation remains undefined. The purpose of this study was to 1) investigate TLR4 regulation during workload-matched endurance exercise in normoxic and hypoxic conditions in vivo and 2) determine the independent effects of hypoxia and muscle contractions on TLR4 expression in vitro. Eight recreationally active men cycled for 1 h at 65% of their V̇o2max in normoxia (630 mmHg) and in hypobaric hypoxia (440 mmHg). Exercise in normoxia decreased TLR4 expressed on peripheral blood mononuclear cells (PBMCs), had no effect on the expression of inhibitor of κBα (IκBα), and increased the concentration of soluble TLR4 (sTLR4) in circulation. In contrast, exercise in hypoxia decreased the expression of TLR4 and IκBα in PBMCs, and sTLR4 in circulation. Markers of physiological stress were higher during exercise in hypoxia, correlating with markers of intestinal barrier damage, circulating lipopolysaccharides (LPS), and a concurrent decrease in circulating sTLR4, suggesting heightened TLR4 activation, internalization, and degradation in response to escalating physiological strain. In vitro, both hypoxia and myotube contractions independently, and in combination, reduced TLR4 expressed on C2C12 myotubes, and these effects were dependent on hypoxia-inducible factor 1 (HIF-1). In summary, the regulation of TLR4 varies depending on the physiological stress during exercise. To our knowledge, our study provides the first evidence of exercise-induced effects on sTLR4 in vivo and highlights the essential role of HIF-1 in the reduction of TLR4 during contraction and hypoxia in vitro.NEW & NOTEWORTHY We provide the first evidence of exercise affecting soluble Toll-like receptor 4 (sTLR4), a TLR4 ligand decoy receptor. We found that the degree of exercise-induced physiological stress influences TLR4 regulation on peripheral blood mononuclear cells (PBMCs). Moderate-intensity exercise reduces PBMC TLR4 and increases circulating sTLR4. Conversely, workload-matched exercise in hypoxia induces greater physiological stress, intestinal barrier damage, circulating lipopolysaccharides, and reduces both TLR4 and sTLR4, suggesting heightened TLR4 activation, internalization, and degradation under increased strain.
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Affiliation(s)
- Jeremy B Ducharme
- Department of Health, Exercise and Sports Sciences, University of New Mexico, Albuquerque, New Mexico, United States
| | - Zachary J McKenna
- Department of Health, Exercise and Sports Sciences, University of New Mexico, Albuquerque, New Mexico, United States
- Institute for Exercise and Environmental Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, United States
| | - Jonathan W Specht
- Department of Health, Exercise and Sports Sciences, University of New Mexico, Albuquerque, New Mexico, United States
| | - Zachary J Fennel
- Department of Health, Exercise and Sports Sciences, University of New Mexico, Albuquerque, New Mexico, United States
- Molecular Medicine Program, University of Utah, Salt Lake City, Utah, United States
| | - Quint N Berkemeier
- Department of Health, Exercise and Sports Sciences, University of New Mexico, Albuquerque, New Mexico, United States
| | - Michael R Deyhle
- Department of Health, Exercise and Sports Sciences, University of New Mexico, Albuquerque, New Mexico, United States
- Department of Cell Biology and Physiology, School of Medicine, University of New Mexico, Albuquerque, New Mexico, United States
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15
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Morella I, Negro M, Dossena M, Brambilla R, D'Antona G. Gut-muscle-brain axis: Molecular mechanisms in neurodegenerative disorders and potential therapeutic efficacy of probiotic supplementation coupled with exercise. Neuropharmacology 2023; 240:109718. [PMID: 37774944 DOI: 10.1016/j.neuropharm.2023.109718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 09/13/2023] [Accepted: 09/16/2023] [Indexed: 10/01/2023]
Abstract
Increased longevity is often associated with age-related conditions. The most common neurodegenerative disorders in the older population are Alzheimer's disease (AD) and Parkinson's disease (PD), associated with progressive neuronal loss leading to functional and cognitive impairments. Although symptomatic treatments are available, there is currently no cure for these conditions. Gut dysbiosis has been involved in the pathogenesis of AD and PD, thus interventions targeting the "gut-brain axis" could potentially prevent or delay these pathologies. Recent evidence suggests that the skeletal muscle and the gut microbiota can affect each other via the "gut-muscle axis". Importantly, cognitive functions in AD and PD patients significantly benefit from physical activity. In this review, we aim to provide a comprehensive picture of the crosstalk between the brain, the skeletal muscle and the gut microbiota, introducing the concept of "gut-muscle-brain axis". Moreover, we discuss human and animal studies exploring the modulatory role of exercise and probiotics on cognition in AD and PD. Collectively, the findings presented here support the potential benefits of physical activity and probiotic supplementation in AD and PD. Further studies will be needed to develop targeted and multimodal strategies, including lifestyle changes, to prevent or delay the course of these pathologies.
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Affiliation(s)
- Ilaria Morella
- Neuroscience and Mental Health Innovation Institute, School of Biosciences, Cardiff University, Cardiff, UK
| | - Massimo Negro
- Centro di Ricerca Interdipartimentale Nelle Attività Motorie e Sportive (CRIAMS)-Sport Medicine Centre, University of Pavia, Voghera, Italy
| | - Maurizia Dossena
- Department of Biology and Biotechnology "Lazzaro Spallanzani", University of Pavia, 27100 Pavia, Italy
| | - Riccardo Brambilla
- Neuroscience and Mental Health Innovation Institute, School of Biosciences, Cardiff University, Cardiff, UK; Department of Biology and Biotechnology "Lazzaro Spallanzani", University of Pavia, 27100 Pavia, Italy
| | - Giuseppe D'Antona
- Centro di Ricerca Interdipartimentale Nelle Attività Motorie e Sportive (CRIAMS)-Sport Medicine Centre, University of Pavia, Voghera, Italy; Department of Public Health, Experimental and Forensic Medicine, University of Pavia, Pavia, Italy.
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16
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Hart NH, Wallen MP, Farley MJ, Haywood D, Boytar AN, Secombe K, Joseph R, Chan RJ, Kenkhuis MF, Buffart LM, Skinner TL, Wardill HR. Exercise and the gut microbiome: implications for supportive care in cancer. Support Care Cancer 2023; 31:724. [PMID: 38012463 DOI: 10.1007/s00520-023-08183-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 11/12/2023] [Indexed: 11/29/2023]
Abstract
PURPOSE Growing recognition of the gut microbiome as an influential modulator of cancer treatment efficacy and toxicity has led to the emergence of clinical interventions targeting the microbiome to enhance cancer and health outcomes. The highly modifiable nature of microbiota to endogenous, exogenous, and environmental inputs enables interventions to promote resilience of the gut microbiome that have rapid effects on host health, or response to cancer treatment. While diet, probiotics, and faecal microbiota transplant are primary avenues of therapy focused on restoring or protecting gut function in people undergoing cancer treatment, the role of physical activity and exercise has scarcely been examined in this population. METHODS A narrative review was conducted to explore the nexus between cancer care and the gut microbiome in the context of physical activity and exercise as a widely available and clinically effective supportive care strategy used by cancer survivors. RESULTS Exercise can facilitate a more diverse gut microbiome and functional metabolome in humans; however, most physical activity and exercise studies have been conducted in healthy or athletic populations, primarily using aerobic exercise modalities. A scarcity of exercise and microbiome studies in cancer exists. CONCLUSIONS Exercise remains an attractive avenue to promote microbiome health in cancer survivors. Future research should elucidate the various influences of exercise modalities, intensities, frequencies, durations, and volumes to explore dose-response relationships between exercise and the gut microbiome among cancer survivors, as well as multifaceted approaches (such as diet and probiotics), and examine the influences of exercise on the gut microbiome and associated symptom burden prior to, during, and following cancer treatment.
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Affiliation(s)
- Nicolas H Hart
- Human Performance Research Centre, INSIGHT Research Institute, University of Technology Sydney (UTS), Moore Park, NSW, 2030, Australia.
- Caring Futures Institute, College of Nursing and Health Sciences, Flinders University, Adelaide, SA, Australia.
- Cancer and Palliative Care Outcomes Centre, Faculty of Health, Queensland University of Technology (QUT), Brisbane, QLD, Australia.
- Exercise Medicine Research Institute, Edith Cowan University, Joondalup, WA, Australia.
- Institute for Health Research, University of Notre Dame Australia, Fremantle, WA, Australia.
| | - Matthew P Wallen
- Caring Futures Institute, College of Nursing and Health Sciences, Flinders University, Adelaide, SA, Australia
- Institute for Health and Wellbeing, Federation University, Ballarat, VIC, Australia
| | - Morgan J Farley
- Human Performance Research Centre, INSIGHT Research Institute, University of Technology Sydney (UTS), Moore Park, NSW, 2030, Australia
- School of Human Movement and Nutrition Sciences, The University of Queensland, St. Lucia, QLD, Australia
| | - Darren Haywood
- Human Performance Research Centre, INSIGHT Research Institute, University of Technology Sydney (UTS), Moore Park, NSW, 2030, Australia
- Mental Health Division, St Vincent's Hospital Melbourne, Melbourne, VIC, Australia
- Department of Psychiatry, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, VIC, Australia
| | - Alexander N Boytar
- School of Human Movement and Nutrition Sciences, The University of Queensland, St. Lucia, QLD, Australia
| | - Kate Secombe
- The University of Queensland Diamantina Institute, Faculty of Medicine, The University of Queensland, St. Lucia, QLD, Australia
- Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - Ria Joseph
- Caring Futures Institute, College of Nursing and Health Sciences, Flinders University, Adelaide, SA, Australia
| | - Raymond J Chan
- Caring Futures Institute, College of Nursing and Health Sciences, Flinders University, Adelaide, SA, Australia
- Cancer and Palliative Care Outcomes Centre, Faculty of Health, Queensland University of Technology (QUT), Brisbane, QLD, Australia
| | - Marlou-Floor Kenkhuis
- Department of Medical BioSciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Laurien M Buffart
- Department of Medical BioSciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Tina L Skinner
- Human Performance Research Centre, INSIGHT Research Institute, University of Technology Sydney (UTS), Moore Park, NSW, 2030, Australia
- School of Human Movement and Nutrition Sciences, The University of Queensland, St. Lucia, QLD, Australia
| | - Hannah R Wardill
- School of Biomedicine, University of Adelaide, Adelaide, SA, Australia
- Supportive Oncology Research Group, Precision Cancer Medicine, South Australian Health and Medical Research Institute, Adelaide, SA, Australia
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17
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La Torre D, Van Oudenhove L, Vanuytsel T, Verbeke K. Psychosocial stress-induced intestinal permeability in healthy humans: What is the evidence? Neurobiol Stress 2023; 27:100579. [PMID: 37842017 PMCID: PMC10569989 DOI: 10.1016/j.ynstr.2023.100579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 10/04/2023] [Accepted: 10/05/2023] [Indexed: 10/17/2023] Open
Abstract
An impaired intestinal barrier function can be detrimental to the host as it may allow the translocation of luminal antigens and toxins into the subepithelial tissue and bloodstream. In turn, this may cause local and systemic immune responses and lead to the development of pathologies. In vitro and animal studies strongly suggest that psychosocial stress is one of the factors that can increase intestinal permeability via mast-cell dependent mechanisms. Remarkably, studies have not been able to yield unequivocal evidence that such relation between stress and intestinal permeability also exists in (healthy) humans. In the current Review, we discuss the mechanisms that are involved in stress-induced intestinal permeability changes and postulate factors that influence these alterations and that may explain the translational difficulties from in vitro and animal to human studies. As human research differs highly from animal research in the extent to which stress can be applied and intestinal permeability can be measured, it remains difficult to draw conclusions about the presence of a relation between stress and intestinal permeability in (healthy) humans. Future studies should bear in mind these difficulties, and more research into in vivo methods to assess intestinal permeability are warranted.
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Affiliation(s)
- Danique La Torre
- Translational Research Center in Gastrointestinal Disorders (TARGID), Department of Chronic Diseases and Metabolism, Faculty of Medicine, KU Leuven, Leuven, Belgium
- Leuven Brain Institute, KU Leuven, Leuven, Belgium
| | - Lukas Van Oudenhove
- Translational Research Center in Gastrointestinal Disorders (TARGID), Department of Chronic Diseases and Metabolism, Faculty of Medicine, KU Leuven, Leuven, Belgium
- Leuven Brain Institute, KU Leuven, Leuven, Belgium
- Cognitive and Affective Neuroscience Lab, Department of Psychological and Brain Sciences, Dartmouth College, Hanover, NH, USA
| | - Tim Vanuytsel
- Translational Research Center in Gastrointestinal Disorders (TARGID), Department of Chronic Diseases and Metabolism, Faculty of Medicine, KU Leuven, Leuven, Belgium
- Division of Gastroenterology and Hepatology, Leuven University Hospital, Leuven, Belgium
| | - Kristin Verbeke
- Translational Research Center in Gastrointestinal Disorders (TARGID), Department of Chronic Diseases and Metabolism, Faculty of Medicine, KU Leuven, Leuven, Belgium
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18
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Pedroza Matute S, Iyavoo S. Exploring the gut microbiota: lifestyle choices, disease associations, and personal genomics. Front Nutr 2023; 10:1225120. [PMID: 37867494 PMCID: PMC10585655 DOI: 10.3389/fnut.2023.1225120] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 09/19/2023] [Indexed: 10/24/2023] Open
Abstract
The gut microbiota is a rich and dynamic ecosystem that actively interacts with the human body, playing a significant role in the state of health and disease of the host. Diet, exercise, mental health, and other factors have exhibited the ability to influence the gut bacterial composition, leading to changes that can prevent and improve, or favor and worsen, both intestinal and extra-intestinal conditions. Altered gut microbial states, or 'dysbiosis', associated with conditions and diseases are often characterized by shifts in bacterial abundance and diversity, including an impaired Firmicutes to Bacteroidetes ratio. By understanding the effect of lifestyle on the gut microbiota, personalized advice can be generated to suit each individual profile and foster the adoption of lifestyle changes that can both prevent and ameliorate dysbiosis. The delivery of effective and reliable advice, however, depends not only on the available research and current understanding of the topic, but also on the methods used to assess individuals and to discover the associations, which can introduce bias at multiple stages. The aim of this review is to summarize how human gut microbial variability is defined and what lifestyle choices and diseases have shown association with gut bacterial composition. Furthermore, popular methods to investigate the human gut microbiota are outlined, with a focus on the possible bias caused by the lack of use of standardized methods. Finally, an overview of the current state of personalized advice based on gut microbiota testing is presented, underlining its power and limitations.
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Affiliation(s)
| | - Sasitaran Iyavoo
- Nkaarco Diagnostics Limited, Norwich, United Kingdom
- School of Chemistry, College of Health and Science, University of Lincoln, Lincoln, United Kingdom
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19
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Nocella C, Cavarretta E, Fossati C, Pigozzi F, Quaranta F, Peruzzi M, De Grandis F, Costa V, Sharp C, Manara M, Nigro A, Cammisotto V, Castellani V, Picchio V, Sciarretta S, Frati G, Bartimoccia S, D’Amico A, Carnevale R. Dark Chocolate Intake Positively Modulates Gut Permeability in Elite Football Athletes: A Randomized Controlled Study. Nutrients 2023; 15:4203. [PMID: 37836487 PMCID: PMC10574486 DOI: 10.3390/nu15194203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 09/20/2023] [Accepted: 09/27/2023] [Indexed: 10/15/2023] Open
Abstract
Gut barrier disruption can lead to enhanced intestinal permeability, which allows endotoxins, pathogens, and other proinflammatory substances to move through the intestinal barrier into circulation. Intense exercise over a prolonged period increases intestinal permeability, which can be further worsened by the increased production of reactive oxygen species (ROS) and pro-inflammatory cytokines. The aim of this study was to assess the degree of intestinal permeability in elite football players and to exploit the effect of cocoa polyphenols on intestinal permeability induced by intensive physical exercise. Biomarkers of intestinal permeability, such as circulating levels of zonulin, a modulator of tight junctions, occludin, a tight junction protein, and LPS translocation, were evaluated in 24 elite football players and 23 amateur athletes. Moreover, 24 elite football players were randomly assigned to either a dark chocolate (>85% cocoa) intake (n = 12) or a control group (n = 12) for 30 days in a randomized controlled trial. Biochemical analyses were performed at baseline and after 30 days of chocolate intake. Compared to amateur athletes, elite football players showed increased intestinal permeability as indicated by higher levels of zonulin, occludin, and LPS. After 30 days of dark chocolate intake, decreased intestinal permeability was found in elite athletes consuming dark chocolate. In the control group, no changes were observed. In vitro, polyphenol extracts significantly improved intestinal damage in the human intestinal mucosa cell line Caco-2. These results indicate that chronic supplementation with dark chocolate as a rich source of polyphenols positively modulates exercise-induced intestinal damage in elite football athletes.
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Affiliation(s)
- Cristina Nocella
- Department of Clinical, Internal Medicine, Anesthesiological and Cardiovascular Sciences, Sapienza University of Rome, 00161 Rome, Italy; (M.P.); (V.C.); (S.B.)
| | - Elena Cavarretta
- Department of Medical-Surgical Sciences and Biotechnologies, Sapienza University of Rome, 40100 Latina, Italy; (E.C.); (V.P.); (S.S.); (G.F.); (A.D.); (R.C.)
- Mediterranea Cardiocentro, 80122 Napoli, Italy
| | - Chiara Fossati
- Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, 00135 Rome, Italy; (C.F.); (F.P.); (F.Q.)
| | - Fabio Pigozzi
- Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, 00135 Rome, Italy; (C.F.); (F.P.); (F.Q.)
- Villa Stuart Sport Clinic, FIFA Medical Center of Excellence, Via Trionfale 5952, 00136 Rome, Italy; (F.D.G.); (A.N.)
| | - Federico Quaranta
- Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, 00135 Rome, Italy; (C.F.); (F.P.); (F.Q.)
| | - Mariangela Peruzzi
- Department of Clinical, Internal Medicine, Anesthesiological and Cardiovascular Sciences, Sapienza University of Rome, 00161 Rome, Italy; (M.P.); (V.C.); (S.B.)
- Mediterranea Cardiocentro, 80122 Napoli, Italy
| | - Fabrizio De Grandis
- Villa Stuart Sport Clinic, FIFA Medical Center of Excellence, Via Trionfale 5952, 00136 Rome, Italy; (F.D.G.); (A.N.)
| | - Vincenzo Costa
- Associazione Sportiva (A.S.) Roma Football Club, Piazzale Dino Viola 1, 00128 Rome, Italy; (V.C.); (C.S.); (M.M.)
| | - Carwyn Sharp
- Associazione Sportiva (A.S.) Roma Football Club, Piazzale Dino Viola 1, 00128 Rome, Italy; (V.C.); (C.S.); (M.M.)
| | - Massimo Manara
- Associazione Sportiva (A.S.) Roma Football Club, Piazzale Dino Viola 1, 00128 Rome, Italy; (V.C.); (C.S.); (M.M.)
| | - Antonia Nigro
- Villa Stuart Sport Clinic, FIFA Medical Center of Excellence, Via Trionfale 5952, 00136 Rome, Italy; (F.D.G.); (A.N.)
| | - Vittoria Cammisotto
- Department of Clinical, Internal Medicine, Anesthesiological and Cardiovascular Sciences, Sapienza University of Rome, 00161 Rome, Italy; (M.P.); (V.C.); (S.B.)
| | - Valentina Castellani
- Department of General Surgery and Surgical Specialty, Sapienza University of Rome, 00161 Rome, Italy;
| | - Vittorio Picchio
- Department of Medical-Surgical Sciences and Biotechnologies, Sapienza University of Rome, 40100 Latina, Italy; (E.C.); (V.P.); (S.S.); (G.F.); (A.D.); (R.C.)
| | - Sebastiano Sciarretta
- Department of Medical-Surgical Sciences and Biotechnologies, Sapienza University of Rome, 40100 Latina, Italy; (E.C.); (V.P.); (S.S.); (G.F.); (A.D.); (R.C.)
- IRCCS Neuromed, 86077 Pozzilli, Italy
| | - Giacomo Frati
- Department of Medical-Surgical Sciences and Biotechnologies, Sapienza University of Rome, 40100 Latina, Italy; (E.C.); (V.P.); (S.S.); (G.F.); (A.D.); (R.C.)
- IRCCS Neuromed, 86077 Pozzilli, Italy
| | - Simona Bartimoccia
- Department of Clinical, Internal Medicine, Anesthesiological and Cardiovascular Sciences, Sapienza University of Rome, 00161 Rome, Italy; (M.P.); (V.C.); (S.B.)
| | - Alessandra D’Amico
- Department of Medical-Surgical Sciences and Biotechnologies, Sapienza University of Rome, 40100 Latina, Italy; (E.C.); (V.P.); (S.S.); (G.F.); (A.D.); (R.C.)
| | - Roberto Carnevale
- Department of Medical-Surgical Sciences and Biotechnologies, Sapienza University of Rome, 40100 Latina, Italy; (E.C.); (V.P.); (S.S.); (G.F.); (A.D.); (R.C.)
- IRCCS Neuromed, 86077 Pozzilli, Italy
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20
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Toriumi T, Ohmori H, Nagasaki Y. Design of Antioxidant Nanoparticle, which Selectively Locates and Scavenges Reactive Oxygen Species in the Gastrointestinal Tract, Increasing The Running Time of Mice. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2301159. [PMID: 37526346 PMCID: PMC10520625 DOI: 10.1002/advs.202301159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 06/05/2023] [Indexed: 08/02/2023]
Abstract
Excess reactive oxygen species (ROS) produced during strong or unfamiliar exercise cause exercise-induced gastrointestinal syndrome (EIGS), leading to poor health and decreased exercise performance. The application of conventional antioxidants can neither ameliorate EIGS nor improve exercise performance because of their rapid elimination and severe side effects on the mitochondria. Hence, a self-assembling nanoparticle-type antioxidant (RNPO ) that is selectively located in the gastrointestinal (GI) tract for an extended time after oral administration is developed. Interestingly, orally administered RNPO significantly enhances the running time until exhaustion in mice with increasing dosage, whereas conventional antioxidants (TEMPOL) tends to reduce the running time with increasing dosage. The running (control) and TEMPOL groups show severe damage in the GI tract and increased plasma lipopolysaccharide (LPS) levels after 80 min of running, resulting in fewer red blood cells (RBCs) and severe damage to the skeletal muscles and liver. However, the RNPO group is protected against GI tract damage and elevation of plasma LPS levels, similar to the nonrunning (sedentary) group, which prevents damage to the whole body, unlike in the control and TEMPOL groups. Based on these results, it is concluded that continuous scavenging of excessive intestinal ROS protects against gut damage and further improves exercise performance.
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Affiliation(s)
- Takuto Toriumi
- Department of Materials ScienceFaculty of Pure and Applied SciencesUniversity of Tsukuba1‐1‐1 TennoudaiTsukubaIbaraki305‐8573Japan
| | - Hajime Ohmori
- University of Tsukuba1‐1‐1 TennoudaiTsukubaIbaraki305‐8573Japan
- Faculty of Business Information SciencesJobu UniversityToyazukamachi 634‐1IsesakiGunma372‐8588Japan
| | - Yukio Nagasaki
- Department of Materials ScienceFaculty of Pure and Applied SciencesUniversity of Tsukuba1‐1‐1 TennoudaiTsukubaIbaraki305‐8573Japan
- Master's School of Medical SciencesGraduate School of Comprehensive Human SciencesUniversity of TsukubaTennoudai 1‐1‐1TsukubaIbaraki305‐8573Japan
- Center for Research in Radiation, Isotope and Earth System Sciences (CRiES)University of TsukubaTennoudai 1‐1‐1TsukubaIbaraki305‐8573Japan
- Department of ChemistryGraduate School of ScienceThe University of TokyoHongo 7‐3‐1Bunkyo‐kuTokyo113‐8654Japan
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21
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Rojas-Valverde D, Bonilla DA, Gómez-Miranda LM, Calleja-Núñez JJ, Arias N, Martínez-Guardado I. Examining the Interaction between Exercise, Gut Microbiota, and Neurodegeneration: Future Research Directions. Biomedicines 2023; 11:2267. [PMID: 37626763 PMCID: PMC10452292 DOI: 10.3390/biomedicines11082267] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Revised: 08/08/2023] [Accepted: 08/11/2023] [Indexed: 08/27/2023] Open
Abstract
Physical activity has been demonstrated to have a significant impact on gut microbial diversity and function. Emerging research has revealed certain aspects of the complex interactions between the gut, exercise, microbiota, and neurodegenerative diseases, suggesting that changes in gut microbial diversity and metabolic function may have an impact on the onset and progression of neurological conditions. This study aimed to review the current literature from several databases until 1 June 2023 (PubMed/MEDLINE, Web of Science, and Google Scholar) on the interplay between the gut, physical exercise, microbiota, and neurodegeneration. We summarized the roles of exercise and gut microbiota on neurodegeneration and identified the ways in which these are all connected. The gut-brain axis is a complex and multifaceted network that has gained considerable attention in recent years. Research indicates that gut microbiota plays vital roles in metabolic shifts during physiological or pathophysiological conditions in neurodegenerative diseases; therefore, they are closely related to maintaining overall health and well-being. Similarly, exercise has shown positive effects on brain health and cognitive function, which may reduce/delay the onset of severe neurological disorders. Exercise has been associated with various neurochemical changes, including alterations in cortisol levels, increased production of endorphins, endocannabinoids like anandamide, as well as higher levels of serotonin and dopamine. These changes have been linked to mood improvements, enhanced sleep quality, better motor control, and cognitive enhancements resulting from exercise-induced effects. However, further clinical research is necessary to evaluate changes in bacteria taxa along with age- and sex-based differences.
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Affiliation(s)
- Daniel Rojas-Valverde
- Nucleus of Studies for High Performance and Health (CIDISAD-NARS), School of Human Movement Sciences and Quality of Life (CIEMHCAVI), National University, Heredia 86-3000, Costa Rica
- Sports Injury Clinic (Rehab & Readapt), School of Human Movement Sciences and Quality of Life (CIEMHCAVI), National University, Heredia 86-3000, Costa Rica
| | - Diego A. Bonilla
- Research Division, Dynamical Business & Science Society—DBSS International SAS, Bogotá 110311, Colombia;
- Research Group in Biochemistry and Molecular Biology, Faculty of Sciences and Education, Universidad Distrital Francisco José de Caldas, Bogotá 110311, Colombia
- Research Group in Physical Activity, Sports and Health Sciences (GICAFS), Universidad de Córdoba, Montería 230002, Colombia
- Sport Genomics Research Group, Department of Genetics, Physical Anthropology and Animal Physiology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain
| | - Luis M. Gómez-Miranda
- Sports Faculty, Autonomous University of Baja California, Tijuana 22615, Mexico; (L.M.G.-M.); (J.J.C.-N.)
| | - Juan J. Calleja-Núñez
- Sports Faculty, Autonomous University of Baja California, Tijuana 22615, Mexico; (L.M.G.-M.); (J.J.C.-N.)
| | - Natalia Arias
- BRABE Group, Department of Psychology, Faculty of Life and Natural Sciences, University of Nebrija, C/del Hostal, 28248 Madrid, Spain;
| | - Ismael Martínez-Guardado
- BRABE Group, Department of Psychology, Faculty of Life and Natural Sciences, University of Nebrija, C/del Hostal, 28248 Madrid, Spain;
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22
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Cao VT, Carter MC, Brenchley JM, Bolan H, Scott LM, Bai Y, Metcalfe DD, Komarow HD. sCD14 and Intestinal Fatty Acid Binding Protein Are Elevated in the Serum of Patients With Idiopathic Anaphylaxis. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. IN PRACTICE 2023; 11:2080-2086.e5. [PMID: 36997122 PMCID: PMC10411508 DOI: 10.1016/j.jaip.2023.03.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 02/02/2023] [Accepted: 03/14/2023] [Indexed: 03/31/2023]
Abstract
BACKGROUND Intestinal epithelial integrity compromise has been identified in gastrointestinal (GI), atopic, and autoimmune diseases. OBJECTIVE Episodes of idiopathic anaphylaxis (IA) are often accompanied by GI manifestations. We, therefore, sought to determine whether surrogate markers of GI permeability were aberrant in this patient population. METHODS Serum concentrations of zonulin, intestinal fatty acid binding protein (I-FABP), and soluble CD14 (sCD14) measured in 54 patients with IA were compared with concentrations in healthy controls (HCs); and correlated with clinical and laboratory parameters. RESULTS The I-FABP was elevated in sera of patients with IA compared with HCs (median 1,378.0 pg/mL vs 479.0 pg/mL, respectively; P < .001). The sCD14 was also elevated compared with HCs (median 2,017.0 ng/mL and 1,189.0 ng/mL, respectively; P < .001), whereas zonulin was comparable between patients with IA and HCs (median 49.6 ng/mL vs 52.4 ng/mL, respectively; P = .40). The I-FABP was elevated in patients with IA who experienced vomiting and/or diarrhea compared with patients with IA who did not (P = .0091). CONCLUSIONS The I-FABP and sCD14 are elevated in the serum of patients with IA. Elevations in these biomarkers of IA provides evidence that increased GI permeability, as is observed in other allergic conditions such as food allergy, is a common finding in those with IA and offers possible insight into the pathogenesis of this disease.
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Affiliation(s)
- Vivian T Cao
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Melody C Carter
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Jason M Brenchley
- Barrier Immunity Section, Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Hyejeong Bolan
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Linda M Scott
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Yun Bai
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Dean D Metcalfe
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Hirsh D Komarow
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md.
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23
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Williams ZA, Szyszkowicz JK, Osborne N, Allehyany B, Nadon C, Udechukwu MC, Santos A, Audet MC. Sex-specific effects of voluntary wheel running on behavior and the gut microbiota-immune-brain axis in mice. Brain Behav Immun Health 2023; 30:100628. [PMID: 37396336 PMCID: PMC10308214 DOI: 10.1016/j.bbih.2023.100628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Accepted: 04/21/2023] [Indexed: 07/04/2023] Open
Abstract
Physical exercise has been positioned as a promising strategy to prevent and/or alleviate anxiety and depression, but the biological processes associated with its effects on mental health have yet to be entirely determined. Although the prevalence of depression and anxiety in women is about twice that of men, very few studies have examined whether physical exercise could affect mental health differently according to sex. This study examined, in singly-housed mice, the sex-specific effects of voluntary exercise on depressive- and anxiety-like behaviors as well as on different markers along the gut microbiota-immune-brain axis. Male and female C57BL/6N mice had voluntary access to running wheels in their home-cages for 24 days or were left undisturbed in identical home-cages without running wheels. Behaviors were then examined in the open field, splash, elevated plus maze, and tail suspension tests. Gene expression of pro-inflammatory cytokines, microglia activation-related genes, and tight junction proteins was determined in the jejunum and the hippocampus, while microbiota composition and predicted function were verified in cecum contents. Voluntary exercise reduced anxiety-like behaviors and altered grooming patterns in males exclusively. Although the exercise intervention resulted in changes to brain inflammatory activity and to cecal microbiota composition and inferred function in both sexes, reductions in the jejunal expression of pro-inflammatory markers were observed in females only. These findings support the view that voluntary exercise, even when performed during a short period, is beneficial for mental and intestinal health and that its sex-specific effects on behavior could be, at least in part, related to some components of the gut microbiota-immune-brain axis.
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Affiliation(s)
| | - Joanna Kasia Szyszkowicz
- Douglas Mental Health University Institute, Department of Psychiatry, McGill University, Montréal, Canada
| | - Natasha Osborne
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Canada
| | | | - Christophe Nadon
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Canada
| | | | - Ana Santos
- Department of Neuroscience, Carleton University, Ottawa, Canada
| | - Marie-Claude Audet
- Department of Neuroscience, Carleton University, Ottawa, Canada
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Canada
- School of Nutrition Sciences, University of Ottawa, Ottawa, Canada
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24
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Enichen E, Adams RB, Demmig-Adams B. Physical Activity as an Adjunct Treatment for People Living with HIV? Am J Lifestyle Med 2023; 17:502-517. [PMID: 37426740 PMCID: PMC10328202 DOI: 10.1177/15598276221078222] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023] Open
Abstract
This review evaluates physical activity as a candidate for an adjunct treatment, in conjunction with antiretroviral therapy (ART), for people living with HIV (PLWH). Evidence is summarized that chronic, non-resolving inflammation (a principal feature of immune system dysfunction) and a dysfunctional state of the gut environment are key factors in HIV infection that persist despite treatment with ART. In addition, evidence is summarized that regular physical activity may restore normal function of both the immune system and the gut environment and may thereby ameliorate symptoms and non-resolving inflammation-associated comorbidities that burden PLWH. Physicians who care for PLWH could thus consider incorporating physical activity into treatment plans to complement ART. It is also discussed that different types of physical activity can have different effects on the gut environment and immune function, and that future research should establish more specific criteria for the design of exercise regimens tailored to PLWH.
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Affiliation(s)
- Elizabeth Enichen
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, USA, (EE, BDA); Physical Therapy of Boulder, Boulder, CO, USA, (RBA)
| | - Robert B. Adams
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, USA, (EE, BDA); Physical Therapy of Boulder, Boulder, CO, USA, (RBA)
| | - Barbara Demmig-Adams
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, USA, (EE, BDA); Physical Therapy of Boulder, Boulder, CO, USA, (RBA)
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25
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Kulthanan K, Ungprasert P, Jirapongsananuruk O, Rujitharanawong C, Munprom K, Trakanwittayarak S, Pochanapan O, Panjapakkul W, Maurer M. Food-Dependent Exercise-Induced Wheals/Angioedema, Anaphylaxis, or Both: A Systematic Review of Phenotypes. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. IN PRACTICE 2023; 11:1926-1933. [PMID: 36997120 DOI: 10.1016/j.jaip.2023.03.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 03/13/2023] [Accepted: 03/14/2023] [Indexed: 03/31/2023]
Abstract
BACKGROUND Food-dependent exercise-induced allergic reactions can manifest with wheals, angioedema, and anaphylaxis, alone or in combination. OBJECTIVE To systematically review the clinical manifestation, culprit foods and exercise, augmenting factors, comorbidities, and treatment options of each phenotype. METHODS Using predefined search terms, we assessed and analyzed the relevant literature until June 2021. Preferred Reporting Items for Systematic Reviews and Meta-Analysis recommendations were applied to this systematic review. RESULTS A total of 231 studies with 722 patients were included. The most common phenotype was anaphylaxis with wheals, angioedema, or both, reported in 80% of patients. This was associated with a higher number of anaphylactic episodes, augmenting factors, and use of on-demand antihistamine compared with the least common phenotype, anaphylaxis without wheals or angioedema, reported in 4% of patients. Anaphylaxis with wheals/angioedema was also associated with distinct characteristics compared with stand-alone wheals, angioedema, or both, in 17% of patients. Patients with anaphylaxis were older at the time of disease onset, less often had a history of atopy, showed more positive results in response to food and exercise provocation tests, had a more restricted spectrum of culprit foods, and more often used on-demand epinephrine. CONCLUSIONS The three phenotypes of allergic reactions to food and exercise differ in clinical characteristics, triggers, and response to treatment. Knowledge of these differences may help with patient education and counseling as well as disease management.
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Affiliation(s)
- Kanokvalai Kulthanan
- Department of Dermatology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Patompong Ungprasert
- Department of Rheumatic and Immunologic Diseases, Cleveland Clinic, Cleveland, Ohio
| | - Orathai Jirapongsananuruk
- Division of Allergy and Immunology, Department of Pediatrics, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Chuda Rujitharanawong
- Department of Dermatology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Kanyalak Munprom
- Department of Dermatology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | | | - Oraya Pochanapan
- Department of Dermatology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Waratchaya Panjapakkul
- Department of Dermatology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Marcus Maurer
- Institute of Allergology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany; Fraunhofer Institute for Translational Medicine and Pharmacology, Allergology and Immunology, Berlin, Germany.
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26
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Chae SA, Du M, Son JS, Zhu MJ. Exercise improves homeostasis of the intestinal epithelium by activation of apelin receptor-AMP-activated protein kinase signalling. J Physiol 2023; 601:2371-2389. [PMID: 37154385 PMCID: PMC10280693 DOI: 10.1113/jp284552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 05/05/2023] [Indexed: 05/10/2023] Open
Abstract
Intestinal remodelling is dynamically regulated by energy metabolism. Exercise is beneficial for gut health, but the specific mechanisms remain poorly understood. Intestine-specific apelin receptor (APJ) knockdown (KD) and wild-type male mice were randomly divided into two subgroups, with/without exercise, to obtain four groups: WT, WT with exercise, APJ KD and APJ KD with exercise. Animals in the exercise groups were subjected to daily treadmill exercise for 3 weeks. Duodenum was collected at 48 h after the last bout of exercise. AMP-activated protein kinase (AMPK) α1 KD and wild-type mice were also utilized for investigating the mediatory role of AMPK on exercise-induced duodenal epithelial development. AMPK and peroxisome proliferator-activated receptor γ coactivator-1 α were upregulated by exercise via APJ activation in the intestinal duodenum. Correspondingly, exercise induced permissive histone modifications in the PR domain containing 16 (PRDM16) promoter to activate its expression, which was dependent on APJ activation. In agreement, exercise elevated the expression of mitochondrial oxidative markers. The expression of intestinal epithelial markers was downregulated due to AMPK deficiency, and AMPK signalling facilitated epithelial renewal. These data demonstrate that exercise-induced activation of the APJ-AMPK axis facilitates the homeostasis of the intestinal duodenal epithelium. KEY POINTS: Apelin receptor (APJ) signalling is required for improved epithelial homeostasis of the small intestine in response to exercise. Exercise intervention activates PRDM16 through inducing histone modifications, enhanced mitochondrial biogenesis and fatty acid metabolism in duodenum. The morphological development of duodenal villus and crypt is enhanced by the muscle-derived exerkine apelin through the APJ-AMP-activated protein kinase axis.
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Affiliation(s)
- Song Ah Chae
- Nutrigenomics and Growth Biology Laboratory, Department of Animal Sciences, Washington State University, Pullman, WA 99164, USA
| | - Min Du
- Nutrigenomics and Growth Biology Laboratory, Department of Animal Sciences, Washington State University, Pullman, WA 99164, USA
| | - Jun Seok Son
- Laboratory of Perinatal Kinesioepigenetics, Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Department of Physiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Mei-Jun Zhu
- School of Food Science, Washington State University, Pullman, WA 99164, USA
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Boytar AN, Skinner TL, Wallen RE, Jenkins DG, Dekker Nitert M. The Effect of Exercise Prescription on the Human Gut Microbiota and Comparison between Clinical and Apparently Healthy Populations: A Systematic Review. Nutrients 2023; 15:nu15061534. [PMID: 36986264 PMCID: PMC10054511 DOI: 10.3390/nu15061534] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/16/2023] [Accepted: 03/17/2023] [Indexed: 03/30/2023] Open
Abstract
This study systematically reviewed all human longitudinal exercise interventions that reported changes in the gut microbiota; frequency, intensity, duration and type of exercise were assessed to determine the influence of these variables on changes to the gut microbiota in both healthy individuals and clinical populations (PROPERO registration: CRD42022309854). Using PRISMA guidelines, trials analysing gut microbiota change with exercise interventions were included independent of trial randomisation, population, trial duration or analysis technique. Studies were excluded when microbiota abundance was not reported or when exercise was combined with other interventions. Twenty-eight trials were included, of which twelve involved healthy populations only and sixteen involved mixed or clinical-only populations. The findings show that participation in exercise of moderate to high-intensity for 30-90 min ≥3 times per week (or between 150-270 min per week) for ≥8 weeks is likely to produce changes in the gut microbiota. Exercise appears to be effective in modifying the gut microbiota in both clinical and healthy populations. A more robust methodology is needed in future studies to improve the certainty of the evidence.
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Affiliation(s)
- Alexander N Boytar
- School of Human Movement and Nutrition Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Tina L Skinner
- School of Human Movement and Nutrition Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Ruby E Wallen
- School of Human Movement and Nutrition Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - David G Jenkins
- School of Human Movement and Nutrition Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
- School of Health, University of the Sunshine Coast, Maroochydore, QLD 4558, Australia
- Applied Sports Science Technology and Medicine Research Centre, Swansea University, Wales SA1 8EN, UK
| | - Marloes Dekker Nitert
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia
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Sharma V, Mehdi MM. Oxidative stress, inflammation and hormesis: The role of dietary and lifestyle modifications on aging. Neurochem Int 2023; 164:105490. [PMID: 36702401 DOI: 10.1016/j.neuint.2023.105490] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/01/2022] [Accepted: 01/19/2023] [Indexed: 01/25/2023]
Abstract
Oxidative stress (OS) is primarily caused by the formation of free radicals and reactive oxygen species; it is considered as one of the prominent factors in slowing down and degrading cellular machinery of an individual, and it eventually leads to aging and age-related diseases by its continuous higher state. The relation between molecular damage and OS should be particularized to understand the beginning of destruction at the cellular levels, extending outwards to affect tissues, organs, and ultimately to the organism. Several OS biomarkers, which are established at the biomolecular level, are useful in investigating the disease susceptibility during aging. Slowing down the aging process is a matter of reducing the rate of oxidative damage to the cellular machinery over time. The breakdown of homeostasis, the mild overcompensation, the reestablishment of homeostasis, and the adaptive nature of the process are the essential features of hormesis, which incorporates several factors, including calorie restriction, nutrition and lifestyle modifications that play an important role in reducing the OS. In the current review, along with the concept and theories of aging (with emphasis on free radical theory), various manifestations of OS with special attention on mitochondrial dysfunction and age-related diseases have been discussed. To alleviate the OS, hormetic approaches including caloric restriction, exercise, and nutrition have also been discussed.
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Affiliation(s)
- Vinita Sharma
- School of Bioengineering and Biosciences, Lovely Professional University, Punjab, 144401, India
| | - Mohammad Murtaza Mehdi
- School of Bioengineering and Biosciences, Lovely Professional University, Punjab, 144401, India.
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29
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Cheung MK, Tong SLY, Wong MCS, Chan JYK, Ip M, Hui M, Lai CKC, Ng RWY, Ho WCS, Yeung ACM, Chan PKS, Chen Z. Extent of Oral-Gut Transmission of Bacterial and Fungal Microbiota in Healthy Chinese Adults. Microbiol Spectr 2023; 11:e0281422. [PMID: 36625652 PMCID: PMC9927295 DOI: 10.1128/spectrum.02814-22] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Recent studies have provided evidence on the presence of an oral-gut microbiota axis in gastrointestinal diseases; however, whether a similar axis exists in healthy individuals is still in debate. Here, we characterized the bacterial and fungal microbiomes in paired oral rinse and stool samples collected from 470 healthy Chinese adults by sequencing the 16S rRNA V3-V4 and ITS1 regions, respectively. We hypothesized that there is limited oral-gut transmission of both the bacterial and fungal microbiota in healthy Chinese adults. Our results showed that the oral and gut microbiota in healthy individuals differed in taxonomic composition, alpha and beta diversity, metabolic potential, and network properties. Bayesian analysis showed that the vast majority of subjects had negligible or low bacterial and fungal oral-to-stool contribution. Detailed examination of the prevalent amplicon sequence variants (ASVs) also revealed limited cases of sharing between the oral and stool samples within the same individuals, except a few bacterial and fungal ASVs. Association analysis showed that sharing of the potentially transmissible fungal ASVs was associated with host factors, including an older age and a higher body mass index. Our findings indicate that oral-gut transmission of both bacterial and fungal microbiota in healthy adults is limited. Detection of a large amount of shared bacterial or fungal members between the oral and gut microbiome of an individual may indicate medical conditions that warrant detailed checkup. IMPORTANCE The oral-gut microbiota axis in health is a fundamentally important and clinically relevant topic; however, our current understanding of it remains biased and incomplete. By characterizing the bacterial and fungal microbiomes in paired oral rinse and stool samples from a large cohort of healthy Chinese adults, here we provided new evidence that oral-gut microbiota transmission is limited in non-Western population and across biological domains. Our study has established an important baseline of a healthy oral-gut microbiota axis, with which other disease conditions can be compared. Besides, our findings have practical implications that detection of a large amount of shared bacterial or fungal members between the oral cavity and gut within the same individual as an indicator of potential medical conditions.
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Affiliation(s)
- Man Kit Cheung
- Department of Microbiology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, People’s Republic of China
| | - Sylvia L. Y. Tong
- Department of Microbiology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, People’s Republic of China
| | - Martin C. S. Wong
- Centre for Gut Microbiota Research, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, People’s Republic of China
- Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, People’s Republic of China
| | - Jason Y. K. Chan
- Department of Otorhinolaryngology, Head and Neck Surgery, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, People’s Republic of China
| | - Margaret Ip
- Department of Microbiology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, People’s Republic of China
| | - Mamie Hui
- Department of Microbiology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, People’s Republic of China
- Centre for Gut Microbiota Research, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, People’s Republic of China
| | - Christopher K. C. Lai
- Department of Microbiology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, People’s Republic of China
| | - Rita W. Y. Ng
- Department of Microbiology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, People’s Republic of China
| | - Wendy C. S. Ho
- Department of Microbiology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, People’s Republic of China
| | - Apple C. M. Yeung
- Department of Microbiology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, People’s Republic of China
| | - Paul K. S. Chan
- Department of Microbiology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, People’s Republic of China
- Centre for Gut Microbiota Research, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, People’s Republic of China
- Stanley Ho Centre for Emerging Infectious Diseases, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, People’s Republic of China
| | - Zigui Chen
- Department of Microbiology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, People’s Republic of China
- Centre for Gut Microbiota Research, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, People’s Republic of China
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30
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Zhang YW, Cao MM, Li YJ, Chen XX, Yu Q, Rui YF. A narrative review of the moderating effects and repercussion of exercise intervention on osteoporosis: ingenious involvement of gut microbiota and its metabolites. J Transl Med 2022; 20:490. [PMID: 36303163 DOI: 10.1186/s12967-022-03700-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 10/03/2022] [Accepted: 10/09/2022] [Indexed: 11/10/2022] Open
Abstract
Osteoporosis (OP) is a systemic bone disease characterized by the decreased bone mass and destruction of bone microstructure, which tends to result in the enhanced bone fragility and related fractures, as well as high disability rate and mortality. Exercise is one of the most common, reliable and cost-effective interventions for the prevention and treatment of OP currently, and numerous studies have revealed the close association between gut microbiota (GM) and bone metabolism recently. Moreover, exercise can alter the structure, composition and abundance of GM, and further influence the body health via GM and its metabolites, and the changes of GM also depend on the choice of exercise modes. Herein, combined with relevant studies and based on the inseparable relationship between exercise intervention-GM-OP, this review is aimed to discuss the moderating effects and potential mechanisms of exercise intervention on GM and bone metabolism, as well as the interaction between them.
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Affiliation(s)
- Yuan-Wei Zhang
- Department of Orthopaedics, School of Medicine, Zhongda Hospital, Southeast University, No. 87 Ding Jia Qiao, 210009, Nanjing, Jiangsu, PR China.,Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, School of Medicine, Zhongda Hospital, Southeast University, Nanjing Jiangsu, PR China.,School of Medicine, Southeast University, Nanjing, Jiangsu, PR China.,Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, Jiangsu, PR China
| | - Mu-Min Cao
- Department of Orthopaedics, School of Medicine, Zhongda Hospital, Southeast University, No. 87 Ding Jia Qiao, 210009, Nanjing, Jiangsu, PR China.,Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, School of Medicine, Zhongda Hospital, Southeast University, Nanjing Jiangsu, PR China.,School of Medicine, Southeast University, Nanjing, Jiangsu, PR China.,Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, Jiangsu, PR China
| | - Ying-Juan Li
- Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, School of Medicine, Zhongda Hospital, Southeast University, Nanjing Jiangsu, PR China.,Department of Geriatrics, School of Medicine, Zhongda Hospital, Southeast University, Nanjing, Jiangsu, PR China
| | - Xiang-Xu Chen
- Department of Orthopaedics, School of Medicine, Zhongda Hospital, Southeast University, No. 87 Ding Jia Qiao, 210009, Nanjing, Jiangsu, PR China.,Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, School of Medicine, Zhongda Hospital, Southeast University, Nanjing Jiangsu, PR China.,School of Medicine, Southeast University, Nanjing, Jiangsu, PR China.,Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, Jiangsu, PR China
| | - Qian Yu
- Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, School of Medicine, Zhongda Hospital, Southeast University, Nanjing Jiangsu, PR China.,Department of Gastroenterology, School of Medicine, Zhongda Hospital, Southeast University, Nanjing, Jiangsu, PR China
| | - Yun-Feng Rui
- Department of Orthopaedics, School of Medicine, Zhongda Hospital, Southeast University, No. 87 Ding Jia Qiao, 210009, Nanjing, Jiangsu, PR China. .,Multidisciplinary Team (MDT) for Geriatric Hip Fracture Management, School of Medicine, Zhongda Hospital, Southeast University, Nanjing Jiangsu, PR China. .,School of Medicine, Southeast University, Nanjing, Jiangsu, PR China. .,Orthopaedic Trauma Institute (OTI), Southeast University, Nanjing, Jiangsu, PR China.
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31
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Ribeiro FM, Silva MA, Lyssa V, Marques G, Lima HK, Franco OL, Petriz B. The molecular signaling of exercise and obesity in the microbiota-gut-brain axis. Front Endocrinol (Lausanne) 2022; 13:927170. [PMID: 35966101 PMCID: PMC9365995 DOI: 10.3389/fendo.2022.927170] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Accepted: 07/05/2022] [Indexed: 11/13/2022] Open
Abstract
Obesity is one of the major pandemics of the 21st century. Due to its multifactorial etiology, its treatment requires several actions, including dietary intervention and physical exercise. Excessive fat accumulation leads to several health problems involving alteration in the gut-microbiota-brain axis. This axis is characterized by multiple biological systems generating a network that allows bidirectional communication between intestinal bacteria and brain. This mutual communication maintains the homeostasis of the gastrointestinal, central nervous and microbial systems of animals. Moreover, this axis involves inflammatory, neural, and endocrine mechanisms, contributes to obesity pathogenesis. The axis also acts in appetite and satiety control and synthesizing hormones that participate in gastrointestinal functions. Exercise is a nonpharmacologic agent commonly used to prevent and treat obesity and other chronic degenerative diseases. Besides increasing energy expenditure, exercise induces the synthesis and liberation of several muscle-derived myokines and neuroendocrine peptides such as neuropeptide Y, peptide YY, ghrelin, and leptin, which act directly on the gut-microbiota-brain axis. Thus, exercise may serve as a rebalancing agent of the gut-microbiota-brain axis under the stimulus of chronic low-grade inflammation induced by obesity. So far, there is little evidence of modification of the gut-brain axis as a whole, and this narrative review aims to address the molecular pathways through which exercise may act in the context of disorders of the gut-brain axis due to obesity.
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Affiliation(s)
- Filipe M. Ribeiro
- Post-Graduation Program in Physical Education, Catholic University of Brasilia, Brasilia, Brazil
- Center for Proteomic and Biochemical Analysis, Post-Graduation in Genomic and Biotechnology Sciences, Catholic University of Brasilia, Brasília, Brazil
- Laboratory of Molecular Exercise Physiology - University Center of the Federal District - UDF, Brasilia, Brazil
| | - Maycon A. Silva
- Center for Proteomic and Biochemical Analysis, Post-Graduation in Genomic and Biotechnology Sciences, Catholic University of Brasilia, Brasília, Brazil
| | - Victória Lyssa
- Laboratory of Molecular Analysis, Graduate Program of Sciences and Technology of Health, University of Brasilia, Brasilia, Brazil
| | - Gabriel Marques
- Laboratory of Molecular Exercise Physiology - University Center of the Federal District - UDF, Brasilia, Brazil
| | - Henny K. Lima
- Center for Proteomic and Biochemical Analysis, Post-Graduation in Genomic and Biotechnology Sciences, Catholic University of Brasilia, Brasília, Brazil
| | - Octavio L. Franco
- Post-Graduation Program in Physical Education, Catholic University of Brasilia, Brasilia, Brazil
- Center for Proteomic and Biochemical Analysis, Post-Graduation in Genomic and Biotechnology Sciences, Catholic University of Brasilia, Brasília, Brazil
- S-Inova Biotech, Catholic University Dom Bosco, Biotechnology Program, Campo Grande, Brazil
| | - Bernardo Petriz
- Center for Proteomic and Biochemical Analysis, Post-Graduation in Genomic and Biotechnology Sciences, Catholic University of Brasilia, Brasília, Brazil
- Laboratory of Molecular Exercise Physiology - University Center of the Federal District - UDF, Brasilia, Brazil
- Postgraduate Program in Rehabilitation Sciences - University of Brasília, Brasília, Brazil
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32
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Engel S, Mortensen B, Wellejus A, Vera-Jimenez N, Struve C, Brummer RJ, Damholt A, Woods T, Shanahan F. Safety of Bifidobacterium breve, Bif195, employing a human exercise-induced intestinal permeability model: a randomised, double-blinded, placebo-controlled, parallel group trial. Benef Microbes 2022; 13:243-252. [PMID: 35866597 DOI: 10.3920/bm2021.0173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
We have previously shown that the probiotic Bifidobacterium breve strain Bif195 alleviates mucosal injury including ulcer formation in the upper intestine induced by non-steroid anti-inflammatory drugs (NSAIDs). Here, we report additional safety use of Bif195 in 126 healthy humans undergoing an exercise-induced intestinal permeability challenge in a double-blinded, placebo-controlled randomised 6-week intervention trial. Intestinal permeability was assessed by urinary lactulose/rhamnose (L/R) ratio. L/R ratio, plasma intestinal fatty acid binding protein (I-FABP) and gastrointestinal symptom rating scale (GSRS) questionnaire were measured resting and after a 1 h treadmill challenge, prior to and at the end of the intervention. To be able to compare the equivalence of resting state at baseline, of this cohort of well-trained subjects, to non-trained subjects, a cohort of 63 healthy and non-trained subjects (<2 h/week of endurance sports) was included. Study subjects (well-trained) were 35.7% women with a mean age and body mass index (in kg/m2) of 35.0 years and 24.8, respectively. There were no differences between the Bif195 and placebo groups in effects on L/R ratio, I-FABP and GSRS questionnaire score. In addition, there were no differences between Bif195 and placebo in number of adverse events and change in cytokines, liver or kidney biomarkers. The exercise model successfully induced intestinal permeability by statistically significantly increasing L/R ratio by ~100% (P<0.0001) and cytokines after the exercise challenge. No significant difference was found between well-trained and non-trained subjects in baseline resting L/R ratio. In conclusion, the reported cytoprotective effects of Bif195 are unlikely to be primarily related to small bowel permeability, and the safety of Bif195 in individuals with increased permeability is supported by the present data. ClinicalTrials.gov: NCT03027583.
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Affiliation(s)
- S Engel
- Chr. Hansen A/S, Human Health, Scientific Affairs, Boege Alle 10, 2970 Hoersholm, Denmark
| | - B Mortensen
- Chr. Hansen A/S, Human Health, Scientific Affairs, Boege Alle 10, 2970 Hoersholm, Denmark
| | - A Wellejus
- Chr. Hansen A/S, Human Health, Scientific Affairs, Boege Alle 10, 2970 Hoersholm, Denmark
| | - N Vera-Jimenez
- Chr. Hansen A/S, Human Health, Scientific Affairs, Boege Alle 10, 2970 Hoersholm, Denmark
| | - C Struve
- Chr. Hansen A/S, Human Health, Scientific Affairs, Boege Alle 10, 2970 Hoersholm, Denmark
| | - R J Brummer
- Nutrition-Gut-Brain Interactions Research Centre, Faculty of Medicine and Health, Örebro University, Fakultetsgatan 2, 70182 Örebro, Sweden
| | - A Damholt
- Chr. Hansen A/S, Human Health, Scientific Affairs, Boege Alle 10, 2970 Hoersholm, Denmark
| | - T Woods
- Mardyke Arena, Cork, Ireland
| | - F Shanahan
- Department of Medicine, University College Cork, Clinical Sciences Building, Cork University Hospital, Wilton, Cork T12 EC8P, Ireland and APC Microbiome, Biosciences Building, University College Cork, Ireland
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Milenkovic D, Capel F, Combaret L, Comte B, Dardevet D, Evrard B, Guillet C, Monfoulet LE, Pinel A, Polakof S, Pujos-Guillot E, Rémond D, Wittrant Y, Savary-Auzeloux I. Targeting the gut to prevent and counteract metabolic disorders and pathologies during aging. Crit Rev Food Sci Nutr 2022; 63:11185-11210. [PMID: 35730212 DOI: 10.1080/10408398.2022.2089870] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Impairment of gut function is one of the explanatory mechanisms of health status decline in elderly population. These impairments involve a decline in gut digestive physiology, metabolism and immune status, and associated to that, changes in composition and function of the microbiota it harbors. Continuous deteriorations are generally associated with the development of systemic dysregulations and ultimately pathologies that can worsen the initial health status of individuals. All these alterations observed at the gut level can then constitute a wide range of potential targets for development of nutritional strategies that can impact gut tissue or associated microbiota pattern. This can be key, in a preventive manner, to limit gut functionality decline, or in a curative way to help maintaining optimum nutrients bioavailability in a context on increased requirements, as frequently observed in pathological situations. The aim of this review is to give an overview on the alterations that can occur in the gut during aging and lead to the development of altered function in other tissues and organs, ultimately leading to the development of pathologies. Subsequently is discussed how nutritional strategies that target gut tissue and gut microbiota can help to avoid or delay the occurrence of aging-related pathologies.
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Affiliation(s)
- Dragan Milenkovic
- Human Nutrition Unit, UMR1019, University Clermont Auvergne, INRAE, Clermont-Ferrand, France
| | - Frédéric Capel
- Human Nutrition Unit, UMR1019, University Clermont Auvergne, INRAE, Clermont-Ferrand, France
| | - Lydie Combaret
- Human Nutrition Unit, UMR1019, University Clermont Auvergne, INRAE, Clermont-Ferrand, France
| | - Blandine Comte
- Human Nutrition Unit, UMR1019, University Clermont Auvergne, INRAE, Clermont-Ferrand, France
| | - Dominique Dardevet
- Human Nutrition Unit, UMR1019, University Clermont Auvergne, INRAE, Clermont-Ferrand, France
| | - Bertrand Evrard
- Human Nutrition Unit, UMR1019, University Clermont Auvergne, INRAE, Clermont-Ferrand, France
| | - Christelle Guillet
- Human Nutrition Unit, UMR1019, University Clermont Auvergne, INRAE, Clermont-Ferrand, France
| | | | - Alexandre Pinel
- Human Nutrition Unit, UMR1019, University Clermont Auvergne, INRAE, Clermont-Ferrand, France
| | - Sergio Polakof
- Human Nutrition Unit, UMR1019, University Clermont Auvergne, INRAE, Clermont-Ferrand, France
| | - Estelle Pujos-Guillot
- Human Nutrition Unit, UMR1019, University Clermont Auvergne, INRAE, Clermont-Ferrand, France
| | - Didier Rémond
- Human Nutrition Unit, UMR1019, University Clermont Auvergne, INRAE, Clermont-Ferrand, France
| | - Yohann Wittrant
- Human Nutrition Unit, UMR1019, University Clermont Auvergne, INRAE, Clermont-Ferrand, France
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Exercise protects intestinal epithelial barrier from high fat diet- induced permeabilization through SESN2/AMPKα1/HIF-1α signaling. J Nutr Biochem 2022; 107:109059. [DOI: 10.1016/j.jnutbio.2022.109059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 02/19/2022] [Accepted: 04/14/2022] [Indexed: 01/01/2023]
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Ducharme JB, McKenna ZJ, Deyhle MR. Exercise mitigates the Toll of muscle atrophy: A narrative review of the effects of exercise on Toll-like receptor-4 in leukocytes and skeletal muscle. Am J Physiol Cell Physiol 2022; 322:C581-C589. [PMID: 35171696 DOI: 10.1152/ajpcell.00005.2022] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Conditions characterized by muscle wasting such as cachexia and sarcopenia are devastating at the individual level, and they place a profound burden on public health. Evidence suggests that inflammation is likely a mechanistic contributor to the pathogenesis of these conditions. One specific molecule, lipopolysaccharide, has gained attention due to its role in initiating inflammation. Toll-like receptor-4 is the primary receptor for lipopolysaccharide and has been shown to be implicit in the downstream proinflammatory response associated with lipopolysaccharide. Importantly, Toll-like receptor-4 is expressed on various cell types throughout the human body such as leukocytes and skeletal muscle fibers and may have site-specific effects that contribute to muscle wasting conditions based on the location in which activation occurs. Accordingly, reducing proinflammatory signaling at these locations may be an effective strategy at mitigating muscle wasting. Regular exercise training is believed to elicit anti-inflammatory adaptations, but the mechanisms by which this occurs are yet to be fully understood. Understanding the mechanisms by which Toll-like receptor-4 activation contributes to muscle wasting and how exercise affects this, may allow for the development of a non-pharmacological therapeutic intervention. Therefore, in this review, we summarize the current understanding of the lipopolysaccharide/Toll-like receptor-4 axis in leukocytes and skeletal muscle fibers on the pathogenesis of muscle wasting conditions and we critically examine the current evidence regarding the effects of exercise on this axis.
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Affiliation(s)
- Jeremy B Ducharme
- Department of Health, Exercise, and Sport Sciences, University of New Mexico, Albuquerque, NM, United States
| | - Zachary J McKenna
- Department of Health, Exercise, and Sport Sciences, University of New Mexico, Albuquerque, NM, United States
| | - Michael R Deyhle
- Department of Health, Exercise, and Sport Sciences, University of New Mexico, Albuquerque, NM, United States
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36
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Valder S, Brinkmann C. Exercise for the Diabetic Gut-Potential Health Effects and Underlying Mechanisms. Nutrients 2022; 14:813. [PMID: 35215463 PMCID: PMC8877907 DOI: 10.3390/nu14040813] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/10/2022] [Accepted: 02/12/2022] [Indexed: 02/01/2023] Open
Abstract
It can be assumed that changes in the gut microbiota play a crucial role in the development of type 2 diabetes mellitus (T2DM). It is generally accepted that regular physical activity is beneficial for the prevention and therapy of T2DM. Therefore, this review analyzes the effects of exercise training on the gut microbiota composition and the intestinal barrier function in T2DM. The current literature shows that regular exercise can influence the gut microbiota composition and the intestinal barrier function with ameliorative effects on T2DM. In particular, increases in the number of short-chain fatty acid (SCFA)-producing bacteria and improvements in the gut barrier integrity with reduced endotoxemia seem to be key points for positive interactions between gut health and T2DM, resulting in improvements in low-grade systemic inflammation status and glycemic control. However, not all aspects are known in detail and further studies are needed to further examine the efficacy of different training programs, the role of myokines, SCFA-producing bacteria, and SCFAs in the relevant metabolic pathways. As microbial signatures differ in individuals who respond differently to exercise training programs, one scientific focus could be the development of computer-based methods for the personalized analysis of the gut microbiota in the context of a microbiota/microbiome-based training program.
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Affiliation(s)
- Sarah Valder
- Department of Molecular and Cellular Sport Medicine, Institute of Cardiovascular Research and Sport Medicine, German Sport University Cologne, 50933 Cologne, Germany;
| | - Christian Brinkmann
- Department of Preventive and Rehabilitative Sport Medicine, Institute of Cardiovascular Research and Sport Medicine, German Sport University Cologne, 50933 Cologne, Germany
- Department of Fitness & Health, IST University of Applied Sciences, 40233 Dusseldorf, Germany
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Voluntary Wheel Running in Old C57BL/6 Mice Reduces Age-Related Inflammation in the Colon but Not in the Brain. Cells 2022; 11:cells11030566. [PMID: 35159375 PMCID: PMC8834481 DOI: 10.3390/cells11030566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 01/27/2022] [Accepted: 02/02/2022] [Indexed: 12/04/2022] Open
Abstract
Inflammation is considered a possible cause of cognitive decline during aging. This study investigates the influence of physical activity and social isolation in old mice on their cognitive functions and inflammation. The Barnes maze task was performed to assess spatial learning and memory in 3, 9, 15, 24, and 28 months old male C57BL/6 mice as well as following voluntary wheel running (VWR) and social isolation (SI) in 20 months old mice. Inflammatory gene expression was analyzed in hippocampal and colonic samples by qPCR. Cognitive decline occurs in mice between 15 and 24 months of age. VWR improved cognitive functions while SI had negative effects. Expression of inflammatory markers changed during aging in the hippocampus (Il1a/Il6/S100b/Iba1/Adgre1/Cd68/Itgam) and colon (Tnf/Il6/Il1ra/P2rx7). VWR attenuates inflammaging specifically in the colon (Ifng/Il10/Ccl2/S100b/Iba1), while SI regulates intestinal Il1b and Gfap. Inflammatory markers in the hippocampus were not altered following VWR and SI. The main finding of our study is that both the hippocampus and colon exhibit an increase in inflammatory markers during aging, and that voluntary wheel running in old age exclusively attenuates intestinal inflammation. Based on the existence of the gut-brain axis, our results extend therapeutic approaches preserving cognitive functions in the elderly to the colon.
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Yang HT, Xiu WJ, Liu JK, Yang Y, Zhang YJ, Zheng YY, Wu TT, Hou XG, Wu CX, Ma YT, Xie X. Characteristics of the Intestinal Microorganisms in Middle-Aged and Elderly Patients: Effects of Smoking. ACS OMEGA 2022; 7:1628-1638. [PMID: 35071858 PMCID: PMC8771693 DOI: 10.1021/acsomega.1c02120] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 07/21/2021] [Indexed: 06/14/2023]
Abstract
Introduction: Smoking affects the occurrence and development of many diseases. We attempt to study the structure of intestinal flora in the middle-aged and elderly population as well as how smoking affects the intestinal flora. Methods: We collected population information, biochemical indicators, and patient feces from 188 middle-aged and elderly male patients, and their feces were tested for the 16S rRNA gene of intestinal flora. Results: We performed a cluster analysis on the intestinal structure of the included population and found that there was a significant difference in the number of smokers between each group (p = 0.011). Subsequently, the microbiological diversity analysis of current smokers and nonsmokers was carried out. The results indicated that there was a significant difference in species composition between the two groups (p = 0.029). Through the analysis on LEfSe differential bacteria, it was found that in current smoking patients, the abundances of the genus Bifidobacterium and the genus Coprobacillus were less, while the abundances of the genera Shigella, Paraprevotella, Burkholderia, Sutterella, Megamonas, and p-75-a5 under the family level of Erysipelotrichaceae were slightly high. We analyzed the correlation between the abundances of these eight different bacteria and clinical indicators. The results revealed the following: the abundance of the genus Bifidobacterium was negatively correlated with fasting blood glucose (r = -0.198, p = 0.006) and positively correlated with uric acid (r = 0.207, p = 0.004) and total bilirubin (r = 0.175, p = 0.017); Shigella bacteria were positively correlated with fasting blood glucose (r = 0.160, p = 0.028) and uric acid (r = 0.153, p = 0.036) levels; the genus Paraprevotella and BMI (r = -0.172, p = 0.018) are negatively correlated; the abundance of the genus Burkholderia was positively correlated with γ-glutamyltransferase (r = 0.146, p = 0.045) levels; Sutterella was correlated with fasting blood glucose (r = 0.143, p = 0.05) and creatinine level (r = -0.16, p = 0.027), which was positively correlated with fasting blood glucose and negatively correlated with creatinine. Conclusions: In middle-aged and elderly patients with cardiovascular disease, smoking can reduce the abundance of Bifidobacterium, while the abundances of some negative bacteria such as Burkholderia, Sutterella, and Megamonas increase.
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Affiliation(s)
- Hai-Tao Yang
- Department
of Cardiology, First Affiliated Hospital
of Xinjiang Medical University, Urumqi 830011, China
| | - Wen-Juan Xiu
- Department
of Cardiology, First Affiliated Hospital
of Xinjiang Medical University, Urumqi 830011, China
| | - Jing-Kun Liu
- Department
of Oncology, First Affiliated Hospital of
Xinjiang Medical University, Urumqi 830011, China
| | - Yi Yang
- Department
of Cardiology Fourth Ward, Xinjiang Medical
University Affiliated Hospital of Traditional Chinese Medicine, Urumqi 830011, China
| | - Yan-jun Zhang
- Department
of Clinical Research Center, People’s
Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830000, China
| | - Ying-Ying Zheng
- Department
of Cardiology, First Affiliated Hospital
of Zhengzhou University, Key Laboratory of Cardiac Injury and Repair
of Henan Province, Zhengzhou 450002, China
| | - Ting-Ting Wu
- Department
of Cardiology, First Affiliated Hospital
of Xinjiang Medical University, Urumqi 830011, China
| | - Xian-Geng Hou
- Department
of Cardiology, First Affiliated Hospital
of Xinjiang Medical University, Urumqi 830011, China
| | - Cheng-Xin Wu
- Department
of Cardiology, First Affiliated Hospital
of Xinjiang Medical University, Urumqi 830011, China
| | - Yi-Tong Ma
- Department
of Cardiology, First Affiliated Hospital
of Xinjiang Medical University, Urumqi 830011, China
| | - Xiang Xie
- Department
of Cardiology, First Affiliated Hospital
of Xinjiang Medical University, Urumqi 830011, China
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The Intestinal Barrier and Its Dysfunction in Patients with Metabolic Diseases and Non-Alcoholic Fatty Liver Disease. Int J Mol Sci 2022; 23:ijms23020662. [PMID: 35054847 PMCID: PMC8775587 DOI: 10.3390/ijms23020662] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/06/2022] [Accepted: 01/07/2022] [Indexed: 02/06/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) represents an increasing cause of liver disease worldwide, mirroring the epidemics of obesity and metabolic syndrome. As there are still no licensed medications for treating the disease, there is an ongoing effort to elucidate the pathophysiology and to discover new treatment pathways. An increasing body of evidence has demonstrated a crosstalk between the gut and the liver, which plays a crucial role in the development and progression of liver disease. Among other intestinal factors, gut permeability represents an interesting factor at the interface of the gut–liver axis. In this narrative review, we summarise the evidence from human studies showing the association between increased gut permeability and NAFLD, as well as with type-2 diabetes and obesity. We also discuss the manipulation of the gut permeability as a potential therapeutical target in patients with NAFLD.
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The Athlete Gut Microbiome and its Relevance to Health and Performance: A Review. Sports Med 2022; 52:119-128. [PMID: 36396898 PMCID: PMC9734205 DOI: 10.1007/s40279-022-01785-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/25/2022] [Indexed: 11/19/2022]
Abstract
The human gut microbiome is a complex ecosystem of microorganisms that play an important role in human health, influencing functions such as vitamin uptake, digestion and immunomodulation. While research of the gut microbiome has expanded considerably over the past decade, some areas such as the relationship between exercise and the microbiome remain relatively under investigated. Despite this, multiple studies have shown a potential bidirectional relationship between exercise and the gut microbiome, with some studies demonstrating the possibility of influencing this relationship. This, in turn, could provide a useful route to influence athletic performance via microbiome manipulation, a valuable prospect for many elite athletes and their teams. The evidence supporting the potential benefits of pursuing this route and associated future perspectives are discussed in this review.
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The active grandparent hypothesis: Physical activity and the evolution of extended human healthspans and lifespans. Proc Natl Acad Sci U S A 2021; 118:2107621118. [PMID: 34810239 DOI: 10.1073/pnas.2107621118] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The proximate mechanisms by which physical activity (PA) slows senescence and decreases morbidity and mortality have been extensively documented. However, we lack an ultimate, evolutionary explanation for why lifelong PA, particularly during middle and older age, promotes health. As the growing worldwide epidemic of physical inactivity accelerates the prevalence of noncommunicable diseases among aging populations, integrating evolutionary and biomedical perspectives can foster new insights into how and why lifelong PA helps preserve health and extend lifespans. Building on previous life-history research, we assess the evidence that humans were selected not just to live several decades after they cease reproducing but also to be moderately physically active during those postreproductive years. We next review the longstanding hypothesis that PA promotes health by allocating energy away from potentially harmful overinvestments in fat storage and reproductive tissues and propose the novel hypothesis that PA also stimulates energy allocation toward repair and maintenance processes. We hypothesize that selection in humans for lifelong PA, including during postreproductive years to provision offspring, promoted selection for both energy allocation pathways which synergistically slow senescence and reduce vulnerability to many forms of chronic diseases. As a result, extended human healthspans and lifespans are both a cause and an effect of habitual PA, helping explain why lack of lifelong PA in humans can increase disease risk and reduce longevity.
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Zhu W, Sahar NE, Javaid HMA, Pak ES, Liang G, Wang Y, Ha H, Huh JY. Exercise-Induced Irisin Decreases Inflammation and Improves NAFLD by Competitive Binding with MD2. Cells 2021; 10:3306. [PMID: 34943814 PMCID: PMC8699279 DOI: 10.3390/cells10123306] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 11/23/2021] [Accepted: 11/24/2021] [Indexed: 12/13/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is a global clinical problem. The MD2-TLR4 pathway exacerbates NAFLD progression by promoting inflammation. Long-term exercise is considered to improve NAFLD but the underlying mechanism is still unclear. In this study, we examined the protective effect and molecular mechanism of exercise on high-fat diet (HFD)-induced liver injury. In an HFD-induced NAFLD mouse model, exercise training significantly decreased hepatic steatosis and fibrosis. Interestingly, exercise training blocked the binding of MD2-TLR4 and decreased the downstream inflammatory response. Irisin is a myokine that is highly expressed in response to exercise and exerts anti-inflammatory effects. We found that circulating irisin levels and muscle irisin expression were significantly increased in exercised mice, suggesting that irisin could mediate the effect of exercise on NAFLD. In vitro studies showed that irisin improved lipid metabolism, fibrosis, and inflammation in palmitic acid (PA)-stimulated AML12 cells. Moreover, binding assay results showed that irisin disturbed MD2-TLR4 complex formation by directly binding with MD2 but not TLR4, and interfered with the recognition of stimuli such as PA and lipopolysaccharide with MD2. Our study provides novel evidence that exercise-induced irisin inhibits inflammation via competitive binding with MD2 to improve NAFLD. Thus, irisin could be considered a potential therapy for NAFLD.
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Affiliation(s)
- Weiwei Zhu
- College of Pharmacy, Chonnam National University, Gwangju 61186, Korea; (W.Z.); (N.E.S.); (H.M.A.J.)
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China; (G.L.); (Y.W.)
| | - Namood E Sahar
- College of Pharmacy, Chonnam National University, Gwangju 61186, Korea; (W.Z.); (N.E.S.); (H.M.A.J.)
| | | | - Eun Seon Pak
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul 03760, Korea; (E.S.P.); (H.H.)
| | - Guang Liang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China; (G.L.); (Y.W.)
| | - Yi Wang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China; (G.L.); (Y.W.)
| | - Hunjoo Ha
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul 03760, Korea; (E.S.P.); (H.H.)
| | - Joo Young Huh
- College of Pharmacy, Chonnam National University, Gwangju 61186, Korea; (W.Z.); (N.E.S.); (H.M.A.J.)
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Feng V, Bawa KK, Marzolini S, Kiss A, Oh P, Herrmann N, Lanctôt KL, Gallagher D. Impact of 12-week exercise program on biomarkers of gut barrier integrity in patients with coronary artery disease. PLoS One 2021; 16:e0260165. [PMID: 34797867 PMCID: PMC8604291 DOI: 10.1371/journal.pone.0260165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 10/28/2021] [Indexed: 12/03/2022] Open
Abstract
Introduction Breakdown of gut barrier integrity has been associated with inflammatory activation and is implicated in the etiology of several chronic medical conditions. Acute exercise is known to increase gut barrier permeability but the impact of chronic exercise is not clear. Most studies to date have examined how acute exercise impacts gut barrier integrity in healthy adults, while few studies have examined the impact of chronic exercise in older adults with comorbidities. We aim to investigate the impact of a 12-week program of aerobic and resistance training on biomarkers of gut barrier integrity in a sample of older adults with coronary artery disease. Methods Participants were adults with coronary artery disease undergoing a moderate-intensity 12-week cardiac rehabilitation exercise program. Fasting blood samples were taken at baseline and study termination. Serum levels of biomarkers of gut barrier integrity (zonulin and fatty acid-binding protein 2 (FABP2)) were measured by ELISA. Cardiorespiratory fitness was assessed by peak oxygen uptake (VO2peak) at study start & completion. Data analyses were performed using SPSS software version 24.0. Results Among study participants (n = 41, 70% male, age = 62.7± 9.35) we found a significant negative association between baseline FABP2 levels and baseline VO2peak in a multiple linear regression model adjusting for covariates (B = -0.3, p = 0.009). Over the course of the exercise program an increase in VO2peak (≥ 5 mL/kg/min) was independently associated with a relative decrease in FABP2 (B = -0.45, p = 0.018) after controlling for medical covariates. Conclusion Our findings indicate that an increase in cardiorespiratory fitness during a 12-week exercise program resulted in a relative improvement in a biomarker of gut barrier integrity. This indicates a potential mechanism by which longer term exercise may improve gut barrier integrity.
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Affiliation(s)
- Vivian Feng
- Department of Pharmacology & Toxicology, University of Toronto, Toronto, Ontario, Canada
- Hurvitz Brain Sciences Program, Sunnybrook Research Institute, Toronto, Ontario, Canada
- Neuropsychopharmacology Research Group, Sunnybrook Research Institute, Toronto, Ontario, Canada
| | - Kritleen K. Bawa
- Department of Pharmacology & Toxicology, University of Toronto, Toronto, Ontario, Canada
- Hurvitz Brain Sciences Program, Sunnybrook Research Institute, Toronto, Ontario, Canada
- Neuropsychopharmacology Research Group, Sunnybrook Research Institute, Toronto, Ontario, Canada
| | - Susan Marzolini
- Heart and Stroke Foundation Canadian Partnership for Stroke Recovery, Sunnybrook Research Institute, Toronto, Ontario, Canada
- KITE Toronto Rehabilitation Institute, University Health Network, East York, Ontario, Canada
| | - Alex Kiss
- ICES, Toronto, Ontario, Canada
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
| | - Paul Oh
- Heart and Stroke Foundation Canadian Partnership for Stroke Recovery, Sunnybrook Research Institute, Toronto, Ontario, Canada
| | - Nathan Herrmann
- Hurvitz Brain Sciences Program, Sunnybrook Research Institute, Toronto, Ontario, Canada
- Neuropsychopharmacology Research Group, Sunnybrook Research Institute, Toronto, Ontario, Canada
- Department of Psychiatry, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Krista L. Lanctôt
- Department of Pharmacology & Toxicology, University of Toronto, Toronto, Ontario, Canada
- Hurvitz Brain Sciences Program, Sunnybrook Research Institute, Toronto, Ontario, Canada
- Neuropsychopharmacology Research Group, Sunnybrook Research Institute, Toronto, Ontario, Canada
- Heart and Stroke Foundation Canadian Partnership for Stroke Recovery, Sunnybrook Research Institute, Toronto, Ontario, Canada
- KITE Toronto Rehabilitation Institute, University Health Network, East York, Ontario, Canada
- Department of Psychiatry, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Damien Gallagher
- Neuropsychopharmacology Research Group, Sunnybrook Research Institute, Toronto, Ontario, Canada
- Department of Psychiatry, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
- * E-mail:
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Caldwell AR, Oki K, Ward SM, Ward JA, Mayer TA, Plamper ML, King MA, Leon LR. Impact of successive exertional heat injuries on thermoregulatory and systemic inflammatory responses in mice. J Appl Physiol (1985) 2021; 131:1469-1485. [PMID: 34528459 DOI: 10.1152/japplphysiol.00160.2021] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The purpose of the study was to determine if repeated exertional heat injuries (EHIs) worsen the inflammatory response. We assessed the impact of a single EHI bout (EHI0) or two separate EHI episodes separated by 1 (EHI1), 3 (EHI3), and 7 (EHI7) days in male C57BL/6J mice (n = 236). To induce EHI, mice underwent a forced running protocol until loss of consciousness or core temperature reached ≥ 42.7°C. Blood and tissue samples were obtained 30 min, 3 h, 1 day, or 7 days after the EHI. We observed that mice undergoing repeated EHI (EHI1, EHI3, and EHI7) had longer running distances before collapse (∼528 m), tolerated higher core temperatures (∼0.18°C higher) before collapse, and had higher minimum core temperature (indicative of injury severity) during recovery relative to EHI0 group (∼2.18°C higher; all P < 0.05). Heat resilience was most pronounced when latency was shortest between EHI episodes (i.e., thermal load and running duration highest in EHI1), suggesting the response diminishes with longer recoveries between EHI events. Furthermore, mice experiencing a second EHI exhibited increased serum and liver HSP70, and lower corticosterone, FABP2, MIP-1β, MIP-2, and IP-10 relative to mice experiencing a single EHI typically at 30 min to 3 h after EHI. Our findings indicate that an EHI event may initiate some adaptive processes that provide acute heat resilience to subsequent EHI conditions. NEW & NOTEWORTHY Mice undergoing repeated exertional heat injuries, within 1 wk of an initial heat injury, appear to have some protective adaptations. During the second exertional heat injury, mice were able to run longer and sustain higher body temperatures before collapse. Despite this, the mice undergoing a second exertional heat injury were more resilient to the heat as evidenced by attenuated minimum body temperature, higher HPS70 (serum and liver), lower corticosterone, and lower FABP2.
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Affiliation(s)
- Aaron R Caldwell
- Thermal and Mountain Medicine Division, United States Army Research Institute of Environmental Medicine, Natick, Massachusetts.,Oak Ridge Institute of Science and Education, Oak Ridge, Tennessee
| | - Kentaro Oki
- Thermal and Mountain Medicine Division, United States Army Research Institute of Environmental Medicine, Natick, Massachusetts
| | - Shauna M Ward
- Thermal and Mountain Medicine Division, United States Army Research Institute of Environmental Medicine, Natick, Massachusetts
| | - Jermaine A Ward
- Thermal and Mountain Medicine Division, United States Army Research Institute of Environmental Medicine, Natick, Massachusetts
| | - Thomas A Mayer
- Thermal and Mountain Medicine Division, United States Army Research Institute of Environmental Medicine, Natick, Massachusetts.,Oak Ridge Institute of Science and Education, Oak Ridge, Tennessee
| | - Mark L Plamper
- Thermal and Mountain Medicine Division, United States Army Research Institute of Environmental Medicine, Natick, Massachusetts
| | - Michelle A King
- Thermal and Mountain Medicine Division, United States Army Research Institute of Environmental Medicine, Natick, Massachusetts
| | - Lisa R Leon
- Thermal and Mountain Medicine Division, United States Army Research Institute of Environmental Medicine, Natick, Massachusetts
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Polutchko SK, Glime GNE, Demmig-Adams B. Synergistic Action of Membrane-Bound and Water-Soluble Antioxidants in Neuroprotection. Molecules 2021; 26:5385. [PMID: 34500818 PMCID: PMC8434335 DOI: 10.3390/molecules26175385] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 09/01/2021] [Accepted: 09/02/2021] [Indexed: 12/30/2022] Open
Abstract
Prevention of neurodegeneration during aging, and support of optimal brain function throughout the lifespan, requires protection of membrane structure and function. We review the synergistic action of different classes of dietary micronutrients, as well as further synergistic contributions from exercise and stress reduction, in supporting membrane structure and function. We address membrane-associated inflammation involving reactive oxygen species (ROS) that produce immune regulators from polyunsaturated fatty acids (PUFAs) of membrane phospholipids. The potential of dietary micronutrients to maintain membrane fluidity and prevent chronic inflammation is examined with a focus on synergistically acting membrane-soluble components (zeaxanthin, lutein, vitamin E, and omega-3 PUFAs) and water-soluble components (vitamin C and various phenolics). These different classes of micronutrients apparently operate in a series of intertwined oxidation-reduction cycles to protect membrane function and prevent chronic inflammation. At this time, it appears that combinations of a balanced diet with regular moderate exercise and stress-reduction practices are particularly beneficial. Effective whole-food-based diets include the Mediterranean and the MIND diet (Mediterranean-DASH Intervention for Neurodegenerative Delay diet, where DASH stands for Dietary Approaches to Stop Hypertension).
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Affiliation(s)
| | | | - Barbara Demmig-Adams
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO 80309-0334, USA; (S.K.P.); (G.N.E.G.)
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Fung AA, Zhou A, Vanos JK, Schmid-Schönbein GW. Enhanced intestinal permeability and intestinal co-morbidities in heat strain: A review and case for autodigestion. Temperature (Austin) 2021; 8:223-244. [PMID: 34527763 PMCID: PMC8436972 DOI: 10.1080/23328940.2021.1922261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 04/22/2021] [Accepted: 04/23/2021] [Indexed: 11/05/2022] Open
Abstract
Enhanced intestinal permeability is a pervasive issue in modern medicine, with implications demonstrably associated with significant health consequences such as sepsis, multiorgan failure, and death. Key issues involve the trigger mechanisms that could compromise intestinal integrity and increase local permeability allowing the passage of larger, potentially dangerous molecules. Heat stress, whether exertional or environmental, may modulate intestinal permeability and begs interesting questions in the context of global climate change, increasing population vulnerabilities, and public health. Emerging evidence indicates that intestinal leakage of digestive enzymes and associated cell dysfunctions--a process referred to as autodigestion--may play a critical role in systemic physiological damage within the body. This increased permeability is exacerbated in the presence of elevated core temperatures. We employed Latent Dirichlet Allocation (LDA) topic modeling methods to analyze the relationship between heat stress and the nascent theory of autodigestion in a systematic, quantifiable, and unbiased manner. From a corpus of 11,233 scientific articles across four relevant scientific journals (Gut, Shock, Temperature, Gastroenterology), it was found that over 1,000 documents expressed a relationship between intestine, enhanced permeability, core temperature, and heat stress. The association has grown stronger in recent years, as heat stress and potential autodigestion are investigated in tandem, yet still by a limited number of specific research studies. Such findings justify the design of future studies to critically test novel interventions against digestive enzymes permeating the intestinal tract, especially the small intestine.
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Affiliation(s)
- Anthony A. Fung
- Department of Bioengineering, University of California San Diego, La Jolla, CA, USA
| | - Andy Zhou
- Department of Bioengineering, University of California San Diego, La Jolla, CA, USA
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Chung Y, Hsiao YT, Huang WC. Physiological and Psychological Effects of Treadmill Overtraining Implementation. BIOLOGY 2021; 10:biology10060515. [PMID: 34200732 PMCID: PMC8230380 DOI: 10.3390/biology10060515] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 06/06/2021] [Accepted: 06/08/2021] [Indexed: 11/16/2022]
Abstract
Simple Summary Overtraining occurs when an imbalance between training stress and recovery exists, and it is prevalent in athletes, soldiers, physical education, and health education undergraduates as well as a number of female and male adolescents. Despite a broad body of evidence concerning physiological and psychological correlates of this syndrome, the pathomechanisms of overtraining are still poorly understood. This illustrates the need to establish animal models of this disorder. This article outlines and discusses physiological and psychological effects of the current established overtraining model, based on an eight-week exhaustive treadmill exercise that reveals the involvement of imbalanced energy expenditure, exacerbated inflammatory response, increased intestinal permeability, and anxiety status in the development and onset of overtraining. This study highlights the maladaptation of overtraining and provides an animal model to determine the effectiveness of possible strategies, including nutrition and monitoring, for treatment and prevention of overtraining syndromes in future studies. Abstract Overtraining in athletes usually causes profound and lasting deleterious effects on the maintenance of health and exercise capacity. Here, we established an overtraining animal model to investigate the physiological modulation for future strategic applications in vivo. We subjected C57BL/6 mice to exhaustive treadmill exercises daily for 8 weeks (the exhaustive exercise group). Next, the physiological and psychological outcomes were compared with the regular exercise and sedentary groups. Outcome measures included growth, glucose tolerance, exercise metabolism profiles, cytokine levels, intestinal tight junction gene expression, and psychological behavioral changes. Our results revealed that overtraining negatively affected the physiological and psychological changes in the current model. The exhaustive exercise group exhibited significantly lower endurance performance and imbalanced energy expenditure, causing a decrease in body fat mass and slowing down the growth curve. In addition, the inflammatory cytokines (tumor necrosis factor-alpha, interleukin-6, and interleukin-1β) and immune cells (neutrophils and monocytes) were significantly elevated after successive exhaustive exercise interventions. Furthermore, overtraining-induced stress resulted in increased anxiety status and decreased food intake. Our findings reinforce the idea that an imbalance between exercise and recovery can impair health and performance maintenance after overtraining. This study highlights the maladaptation of overtraining and provides an animal model to determine the effectiveness of possible strategies, including nutrition and monitoring, for treatment and prevention of overtraining syndromes in future studies.
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Affiliation(s)
- Yi Chung
- College of Human Development and Health, National Taipei University of Nursing and Health Sciences, Taipei 11219, Taiwan;
| | - Yi-Ting Hsiao
- Department of Exercise and Health Science, National Taipei University of Nursing and Health Sciences, Taipei 11219, Taiwan;
| | - Wen-Ching Huang
- Department of Exercise and Health Science, National Taipei University of Nursing and Health Sciences, Taipei 11219, Taiwan;
- Graduate Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei 11031, Taiwan
- Correspondence: ; Tel.: +886-2-2822-7101 (ext. 7721)
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King MA, Rollo I, Baker LB. Nutritional considerations to counteract gastrointestinal permeability during exertional heat stress. J Appl Physiol (1985) 2021; 130:1754-1765. [PMID: 33955260 DOI: 10.1152/japplphysiol.00072.2021] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Intestinal barrier integrity and function are compromised during exertional heat stress (EHS) potentially leading to consequences that range from minor gastrointestinal (GI) disturbances to fatal outcomes in exertional heat stroke or septic shock. This mini-review provides a concise discussion of nutritional interventions that may protect against intestinal permeability during EHS and suggests physiological mechanisms responsible for this protection. Although diverse nutritional interventions have been suggested to be protective against EHS-induced GI permeability, the ingestion of certain amino acids, carbohydrates, and fluid per se is potentially effective strategy, whereas evidence for various polyphenols and pre/probiotics is developing. Plausible physiological mechanisms of protection include increased blood flow, epithelial cell proliferation, upregulation of intracellular heat shock proteins, modulation of inflammatory signaling, alteration of the GI microbiota, and increased expression of tight junction (TJ) proteins. Further clinical research is needed to propose specific nutritional candidates and recommendations for their application to prevent intestinal barrier disruption and elucidate mechanisms during EHS.
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Affiliation(s)
- Michelle A King
- Gatorade Sports Science Institute, PepsiCo R&D Life Sciences, Barrington, Illinois
| | - Ian Rollo
- Gatorade Sports Science Institute, PepsiCo R&D Life Sciences, Leicestershire, United Kingdom
| | - Lindsay B Baker
- Gatorade Sports Science Institute, PepsiCo R&D Life Sciences, Barrington, Illinois
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Molecular Mechanisms Underlying the Beneficial Effects of Exercise on Brain Function and Neurological Disorders. Int J Mol Sci 2021; 22:ijms22084052. [PMID: 33919972 PMCID: PMC8070923 DOI: 10.3390/ijms22084052] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 04/11/2021] [Accepted: 04/12/2021] [Indexed: 12/11/2022] Open
Abstract
As life expectancy has increased, particularly in developed countries, due to medical advances and increased prosperity, age-related neurological diseases and mental health disorders have become more prevalent health issues, reducing the well-being and quality of life of sufferers and their families. In recent decades, due to reduced work-related levels of physical activity, and key research insights, prescribing adequate exercise has become an innovative strategy to prevent or delay the onset of these pathologies and has been demonstrated to have therapeutic benefits when used as a sole or combination treatment. Recent evidence suggests that the beneficial effects of exercise on the brain are related to several underlying mechanisms related to muscle–brain, liver–brain and gut–brain crosstalk. Therefore, this review aims to summarize the most relevant current knowledge of the impact of exercise on mood disorders and neurodegenerative diseases, and to highlight the established and potential underlying mechanisms involved in exercise–brain communication and their benefits for physiology and brain function.
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Ribeiro FM, Petriz B, Marques G, Kamilla LH, Franco OL. Is There an Exercise-Intensity Threshold Capable of Avoiding the Leaky Gut? Front Nutr 2021; 8:627289. [PMID: 33763441 PMCID: PMC7982409 DOI: 10.3389/fnut.2021.627289] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Accepted: 02/10/2021] [Indexed: 12/16/2022] Open
Abstract
Endurance-sport athletes have a high incidence of gastrointestinal disorders, compromising performance and impacting overall health status. An increase in several proinflammatory cytokines and proteins (LPS, I-FABP, IL-6, IL-1β, TNF-α, IFN-γ, C-reactive protein) has been observed in ultramarathoners and triathlon athletes. One of the most common effects of this type of physical activity is the increase in intestinal permeability, known as leaky gut. The intestinal mucosa's degradation can be identified and analyzed by a series of molecular biomarkers, including the lactulose/rhamnose ratio, occludin and claudin (tight junctions), lipopolysaccharides, and I-FABP. Identifying the molecular mechanisms involved in the induction of leaky gut by physical exercise can assist in the determination of safe exercise thresholds for the preservation of the gastrointestinal tract. It was recently shown that 60 min of vigorous endurance training at 70% of the maximum work capacity led to the characteristic responses of leaky gut. It is believed that other factors may contribute to this effect, such as altitude, environmental temperature, fluid restriction, age and trainability. On the other hand, moderate physical training and dietary interventions such as probiotics and prebiotics can improve intestinal health and gut microbiota composition. This review seeks to discuss the molecular mechanisms involved in the intestinal mucosa's adaptation and response to exercise and discuss the role of the intestinal microbiota in mitigating these effects.
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Affiliation(s)
- Filipe M Ribeiro
- Post-graduation Program in Physical Education, Catholic University of Brasilia, Brasilia, Brazil.,Center for Proteomic and Biochemical Analysis, Post-graduation in Genomic and Biotechnology Sciences, Catholic University of Brasilia, Brasília, Brazil.,Laboratory of Molecular Exercise Physiology, University Center - UDF, Brasilia, Brazil
| | - Bernardo Petriz
- Center for Proteomic and Biochemical Analysis, Post-graduation in Genomic and Biotechnology Sciences, Catholic University of Brasilia, Brasília, Brazil.,Laboratory of Molecular Exercise Physiology, University Center - UDF, Brasilia, Brazil.,Postgraduate Program in Health Promotion, University of Franca (Unifran), São Paulo, Brazil
| | - Gabriel Marques
- Laboratory of Molecular Exercise Physiology, University Center - UDF, Brasilia, Brazil
| | - Lima H Kamilla
- Center for Proteomic and Biochemical Analysis, Post-graduation in Genomic and Biotechnology Sciences, Catholic University of Brasilia, Brasília, Brazil
| | - Octavio L Franco
- Post-graduation Program in Physical Education, Catholic University of Brasilia, Brasilia, Brazil.,Center for Proteomic and Biochemical Analysis, Post-graduation in Genomic and Biotechnology Sciences, Catholic University of Brasilia, Brasília, Brazil.,S-Inova Biotech, Catholic University Dom Bosco, Biotechnology Program, Campo Grande, Brazil
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