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Henningsen K, Henry R, Gaskell SK, Alcock R, Mika A, Rauch C, Cheuvront SN, Blazy P, Kenefick R, Costa RJS. Exertional heat stress promotes the presence of bacterial DNA in plasma: A counterbalanced randomised controlled trial. J Sci Med Sport 2024; 27:610-617. [PMID: 38906729 DOI: 10.1016/j.jsams.2024.05.010] [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: 11/17/2023] [Revised: 05/14/2024] [Accepted: 05/17/2024] [Indexed: 06/23/2024]
Abstract
OBJECTIVES The primary aim was to explore the impact of exertional-heat stress (EHS) promoted exercise-associated bacteraemia. A secondary aim was to examine if an amino acid beverage (AAB) intervention may mitigate exercise-associated bacteraemia. DESIGN Counterbalanced randomised control trial. METHODS Twenty endurance trained male participants completed two randomised EHS trials. On one occasion, participants consumed a 237 mL AAB twice daily for 7 days prior, immediately before and every 20 min during EHS (2 h running at 60 % V̇O2max in 35 °C). On the other occasion, a water volume control (CON) equivalent was consumed. Whole blood samples were collected pre- and immediately post-EHS, and were analysed for plasma DNA concentration by fluorometer quantification after microbial extraction, and bacterial relative abundance by next generation 16s rRNA gene sequencing. RESULTS Increased concentration of microbial DNA in plasma pre- to post-EHS was observed on CON (pre-EHS 0.014 ng/μL, post-EHS 0.039 ng/μL) (p < 0.001) and AAB (pre-EHS 0.015 ng/μL, post-EHS 0.031 ng/μL) (p < 0.001). The magnitude of change from pre- to post-exercise on AAB was 40 % lower, but no significant difference was observed versus CON (p = 0.455). Predominant bacterial groups identified included: phyla-Proteobacteria (88.0 %), family-Burkholderiaceae (59.1 %), and genus-Curvibacter (58.6 %). No significant variation in absolute and relative change in α-diversity and relative abundance for phyla, family, and genus bacterial groups was observed in AAB versus CON. CONCLUSIONS The increased presence of microbial-bacterial DNA in systemic circulation in response to EHS appears positive in all participants. An amino acid beverage supplementation period prior to and consumption during EHS did not provide significant attenuation of EHS-associated bacteraemia.
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Hagen C, Humphrey D, Wileman C, Haydon K, Greiner L. Impact of increasing dietary standardized ileal digestible arginine to lysine ratio from 0.85 to 1.15 and water-based arginine supplementation on growth performance and gut integrity of weaned pigs. Transl Anim Sci 2024; 8:txae102. [PMID: 39036444 PMCID: PMC11258900 DOI: 10.1093/tas/txae102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Accepted: 07/08/2024] [Indexed: 07/23/2024] Open
Abstract
The objective of this experiment was to assess the influence of arginine (Arg) supplementation in water and/or feed on the growth performance and gastrointestinal health of newly weaned pigs. Two hundred and forty pigs (5.06 kg; PIC, Hendersonville, TN) were randomly allocated into 80 mixed-sex pens (3 pigs/pen) and subjected to a 2 × 4 factorial design. Two levels of Arg were supplemented in water (0% or 8% stock, dosed through a 1:128 proportioner) for the first phase (days 0 to 7), and four dietary arginine levels (0.85, 0.95, 1.05, and 1.15) standardized ileal digestible (SID) Arg to Lysine (Lys) ratios for the first two phases (days 0 to 7 and 7 to 21). All treatments were provided a common diet (0.96 SID Arg:Lys) for the last phase days 21 to 42. One pig per pen underwent a dual sugar absorption test of lactulose at 500 mg/kg and mannitol at 50 mg/kg of body weight (BW) via gastric tube on days 7 and 21 postweaning, with blood plasma collected 4 h later. The pig tested on day 7 was subsequently euthanized for intestinal tissue collection. Pen growth performance and feed disappearance were evaluated for 3 phases: days 0 to 7, 7 to 21, and 21 to 42 postweaning. The statistical analysis used linear models to examine the effects of SID Arg:Lys in the feed, Arg level in water, and their interactions, with pen as the experimental unit. Orthogonal contrasts were used to test the linear and quadratic effects of increasing SID Arg:Lys in the diet. Growth performance during the first period exhibited variability, reflected by negative gain-to-feed (G:F) ratios, caused by the enteric health challenge. Consequently, data were analyzed separately for each phase. Increasing dietary SID Arg:Lys caused a linear improvement (P = 0.04) in final BW (18.47 and 21.90 kg, for 0.85 and 1.15 SID Arg:Lys, respectively). A trend (P = 0.09) suggested a linear impact of dietary SID Arg:Lys on average daily gain during days 21 to 42. Arg supplementation, whether administered through water or diet, did not affect lactulose and mannitol absorption on both days 7 and 21, nor did it alter histological measurements in the collected ileum tissues on day 7 postweaning. In conclusion, increasing dietary SID Arg:Lys increased final BW but had no clear impacts on intestinal health within the parameters measured, potentially impacted by the rotavirus diagnosis in the first week post-wean.
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Affiliation(s)
- Chloe Hagen
- Department of Animal Science, Iowa State University, Ames, IA 50011, USA
| | - Dalton Humphrey
- Department of Animal Science, Iowa State University, Ames, IA 50011, USA
| | - Caitlyn Wileman
- Department of Animal Science, Iowa State University, Ames, IA 50011, USA
| | - Keith Haydon
- Department of Animal Science, Iowa State University, Ames, IA 50011, USA
- CJ America – Bio, Fort Dodge, IA 50501, USA
| | - Laura Greiner
- Department of Animal Science, Iowa State University, Ames, IA 50011, USA
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Cinca-Morros S, Álvarez-Herms J. The Importance of Maintaining and Improving a Healthy Gut Microbiota in Athletes as a Preventive Strategy to Improve Heat Tolerance and Acclimatization. Microorganisms 2024; 12:1160. [PMID: 38930542 PMCID: PMC11205789 DOI: 10.3390/microorganisms12061160] [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: 04/17/2024] [Revised: 06/04/2024] [Accepted: 06/05/2024] [Indexed: 06/28/2024] Open
Abstract
Exposure to passive heat (acclimation) and exercise under hot conditions (acclimatization), known as heat acclimation (HA), are methods that athletes include in their routines to promote faster recovery and enhance physiological adaptations and performance under hot conditions. Despite the potential positive effects of HA on health and physical performance in the heat, these stimuli can negatively affect gut health, impairing its functionality and contributing to gut dysbiosis. Blood redistribution to active muscles and peripheral vascularization exist during exercise and HA stimulus, promoting intestinal ischemia. Gastrointestinal ischemia can impair intestinal permeability and aggravate systemic endotoxemia in athletes during exercise. Systemic endotoxemia elevates the immune system as an inflammatory responses in athletes, impairing their adaptive capacity to exercise and their HA tolerance. Better gut microbiota health could benefit exercise performance and heat tolerance in athletes. This article suggests that: (1) the intestinal modifications induced by heat stress (HS), leading to dysbiosis and altered intestinal permeability in athletes, can decrease health, and (2) a previously acquired microbial dysbiosis and/or leaky gut condition in the athlete can negatively exacerbate the systemic effects of HA. Maintaining or improving the healthy gut microbiota in athletes can positively regulate the intestinal permeability, reduce endotoxemic levels, and control the systemic inflammatory response. In conclusion, strategies based on positive daily habits (nutrition, probiotics, hydration, chronoregulation, etc.) and preventing microbial dysbiosis can minimize the potentially undesired effects of applying HA, favoring thermotolerance and performance enhancement in athletes.
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Affiliation(s)
- Sergi Cinca-Morros
- Microfluidics Cluster UPV/EHU, Analytical Microsystems & Materials for Lab-on-a-Chip (AMMa-LOAC) Group, Analytical Chemistry Department, University of the Basque Country UPV/EHU, 01006 Vitoria-Gasteiz, Spain
- Microfluidics Cluster UPV/EHU, BIOMICs Microfluidics Group, Lascaray Research Center, University of the Basque Country UPV/EHU, 01006 Vitoria-Gasteiz, Spain
| | - Jesús Álvarez-Herms
- Physiology and Molecular Laboratory (Phymolab), 40170 Collado Hermoso, Spain;
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Bertuccioli A, Zonzini GB, Cazzaniga M, Cardinali M, Di Pierro F, Gregoretti A, Zerbinati N, Guasti L, Matera MR, Cavecchia I, Palazzi CM. Sports-Related Gastrointestinal Disorders: From the Microbiota to the Possible Role of Nutraceuticals, a Narrative Analysis. Microorganisms 2024; 12:804. [PMID: 38674748 PMCID: PMC11051759 DOI: 10.3390/microorganisms12040804] [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: 03/21/2024] [Revised: 04/05/2024] [Accepted: 04/15/2024] [Indexed: 04/28/2024] Open
Abstract
Intense physical exercise can be related to a significant incidence of gastrointestinal symptoms, with a prevalence documented in the literature above 80%, especially for more intense forms such as running. This is in an initial phase due to the distancing of the flow of blood from the digestive system to the skeletal muscle and thermoregulatory systems, and secondarily to sympathetic nervous activation and hormonal response with alteration of intestinal motility, transit, and nutrient absorption capacity. The sum of these effects results in a localized inflammatory process with disruption of the intestinal microbiota and, in the long term, systemic inflammation. The most frequent early symptoms include abdominal cramps, flatulence, the urge to defecate, rectal bleeding, diarrhea, nausea, vomiting, regurgitation, chest pain, heartburn, and belching. Promoting the stability of the microbiota can contribute to the maintenance of correct intestinal permeability and functionality, with better control of these symptoms. The literature documents various acute and chronic alterations of the microbiota following the practice of different types of activities. Several nutraceuticals can have functional effects on the control of inflammatory dynamics and the stability of the microbiota, exerting both nutraceutical and prebiotic effects. In particular, curcumin, green tea catechins, boswellia, berberine, and cranberry PACs can show functional characteristics in the management of these situations. This narrative review will describe its application potential.
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Affiliation(s)
- Alexander Bertuccioli
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, 61122 Urbino, Italy; (A.B.); (G.B.Z.); (M.C.)
- Microbiota International Clinical Society, 10123 Torino, Italy; (M.C.); (F.D.P.); (A.G.); (M.R.M.); (I.C.)
| | - Giordano Bruno Zonzini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, 61122 Urbino, Italy; (A.B.); (G.B.Z.); (M.C.)
| | - Massimiliano Cazzaniga
- Microbiota International Clinical Society, 10123 Torino, Italy; (M.C.); (F.D.P.); (A.G.); (M.R.M.); (I.C.)
- Scientific & Research Department, Velleja Research, 20125 Milano, Italy
| | - Marco Cardinali
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, 61122 Urbino, Italy; (A.B.); (G.B.Z.); (M.C.)
- Department of Internal Medicine, Infermi Hospital, AUSL Romagna, 47921 Rimini, Italy
| | - Francesco Di Pierro
- Microbiota International Clinical Society, 10123 Torino, Italy; (M.C.); (F.D.P.); (A.G.); (M.R.M.); (I.C.)
- Scientific & Research Department, Velleja Research, 20125 Milano, Italy
- Department of Medicine and Surgery, University of Insurbia, 21100 Varese, Italy; (N.Z.); (L.G.)
| | - Aurora Gregoretti
- Microbiota International Clinical Society, 10123 Torino, Italy; (M.C.); (F.D.P.); (A.G.); (M.R.M.); (I.C.)
| | - Nicola Zerbinati
- Department of Medicine and Surgery, University of Insurbia, 21100 Varese, Italy; (N.Z.); (L.G.)
| | - Luigina Guasti
- Department of Medicine and Surgery, University of Insurbia, 21100 Varese, Italy; (N.Z.); (L.G.)
| | - Maria Rosaria Matera
- Microbiota International Clinical Society, 10123 Torino, Italy; (M.C.); (F.D.P.); (A.G.); (M.R.M.); (I.C.)
| | - Ilaria Cavecchia
- Microbiota International Clinical Society, 10123 Torino, Italy; (M.C.); (F.D.P.); (A.G.); (M.R.M.); (I.C.)
| | - Chiara Maria Palazzi
- Microbiota International Clinical Society, 10123 Torino, Italy; (M.C.); (F.D.P.); (A.G.); (M.R.M.); (I.C.)
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Luo M, Zhu W, Liang Z, Feng B, Xie X, Li Y, Liu Y, Shi X, Fu J, Miao L, Dong Z. High-temperature stress response: Insights into the molecular regulation of American shad (Alosa sapidissima) using a multi-omics approach. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 916:170329. [PMID: 38280591 DOI: 10.1016/j.scitotenv.2024.170329] [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: 11/13/2023] [Revised: 01/10/2024] [Accepted: 01/19/2024] [Indexed: 01/29/2024]
Abstract
High temperature is an important abiotic stressor that limits the survival and growth of aquatic organisms. American shad (Alosa sapidissima), a migratory fish suitable for culturing at low temperatures, is known for its delicious taste and thus has high economic value. Studies concerning changes in A. sapidissima under high temperature are limited, especially at the gene expression and protein levels. High-temperature stress significantly reduced the survival rates and increased vacuolar degeneration and inflammatory infiltration in the gills and liver. High temperature increased the activities of SOD, CAT, and cortisol, with a trend of initial increase followed by decreases in MDA, ALP, and LDH, and irregular changes in T-AOC and Na-K-ATPase. Comprehensive analysis of the transcriptome, proteome, and metabolome of gills from fish treated with different culture temperatures (24, 27, and 30 °C) revealed that differentially expressed genes, proteins, and metabolites were highly enriched in pathways involved in protein digestion and absorption, protein processing in endoplasmic reticulum, metabolic pathways, and purine metabolism. Gene expression and protein profiles indicated that genes coding for antioxidants (i.e., cat and alpl) and members of the heat shock protein (i.e., HSP70, HSP90AA1, and HSP5) were significantly upregulated. Additionally, a conjoint analysis revealed that several key enzymes, including nucleoside diphosphate kinase 2, adenosine deaminase, and ectonucleoside triphosphate diphosphohydrolase 5/6 were altered, thereby affecting the metabolism of guanosine, guanine, and inosine. An interaction network further confirmed that levels of the essential amino acids DL-arginine and L-histidine were significantly reduced, and corticosterone levels were significantly increased, suggesting that A. sapidissima may be more dependent on amino acids for energy in vivo. Overall, this work suggests that living in a high-temperature environment leads to differential defense responses in fishes. The results provide novel perspectives for studying the molecular basis of adaptation to climate change in A. sapidissima and for genetic selection.
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Affiliation(s)
- Mingkun Luo
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Freshwater Fisheries Research Center of Chinese Academy of Fishery Sciences, Ministry of Agriculture and Rural Affairs, Wuxi, Jiangsu, China
| | - Wenbin Zhu
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Freshwater Fisheries Research Center of Chinese Academy of Fishery Sciences, Ministry of Agriculture and Rural Affairs, Wuxi, Jiangsu, China
| | - Zhengyuan Liang
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, Jiangsu, China
| | - Bingbing Feng
- Fisheries Technology Extension Center of Jiangsu Province, Nanjing, Jiangsu, China
| | - Xudong Xie
- Zhenjiang Xinrun Agriculture Development Co., Ltd, Zhenjiang, Jiangsu, China
| | - Yulin Li
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, Jiangsu, China
| | - Ying Liu
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, Jiangsu, China
| | - Xiulan Shi
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, Jiangsu, China
| | - Jianjun Fu
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Freshwater Fisheries Research Center of Chinese Academy of Fishery Sciences, Ministry of Agriculture and Rural Affairs, Wuxi, Jiangsu, China
| | - Linghong Miao
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Freshwater Fisheries Research Center of Chinese Academy of Fishery Sciences, Ministry of Agriculture and Rural Affairs, Wuxi, Jiangsu, China
| | - Zaijie Dong
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Freshwater Fisheries Research Center of Chinese Academy of Fishery Sciences, Ministry of Agriculture and Rural Affairs, Wuxi, Jiangsu, China; Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, Jiangsu, China.
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Salehi S, Hosseinzadeh-Attar MJ, Alipoor E, Dahmardehei M, Yaseri M, Emami MR, Siadat SD. Effects of hydrolyzed collagen alone or in combination with fish oil on the gut microbiome in patients with major burns. Burns 2024; 50:444-453. [PMID: 38114377 DOI: 10.1016/j.burns.2023.08.017] [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: 12/09/2022] [Revised: 05/08/2023] [Accepted: 08/20/2023] [Indexed: 12/21/2023]
Abstract
Burns are associated with gut dysbiosis. Collagen peptides and omega-3 fatty acids (FAs) are suggested to improve wound healing and the inflammatory response. These are also correlated with microbiome colonization. Therefore, the present study aimed to investigate the effect of hydrolyzed collagen alone or in combination with fish oil on specific species of the gut microbiome in patients with major burns. In this randomized double-blind clinical trial, 57 adults (aged 18-60 years) with 20-45% total body surface area burns were randomised into three groups to receive either 40 gr hydrolyzed collagen +10 ml sunflower oil, 40 g hydrolyzed collagen +10 ml fish oil or placebo, divided into two daily drinks, for two weeks. Gut bacteria were measured using the real-time quantitative polymerase chain reaction (qPCR) method. The mean concentration of Bifidobacterium was significantly reduced in the control (P = 0.002) and collagen (P = 0.005) groups compared with the baseline values, whereas no significant change was observed in the collagen omega-3 group. The Firmicutes to Bacteroidetes ratio decreased significantly in the collagen group (p = 0.002) after supplementation compared to baseline . No significant changes in concentration of Lactobacillus, Enterobacteriaceae, and F.prausnitzii were observed between or within the study groups. Two weeks of supplementation with collagen and omega-3 FAs in patients with major burns did not result in a significant difference in the concentration of bacteria measured between the study groups. However, the addition of omega-3 FAs prevented a significant reduction in gut Bifidobacterium. Future studies are suggested to investigate the potential efficacy of these nutrients in improving the gut microbiota and clinical outcomes in major burns. REGISTRATION NUMBER: IRCT20131125015536N9.
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Affiliation(s)
- Shiva Salehi
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Javad Hosseinzadeh-Attar
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran; Cardiac Primary Prevention Research Center, Cardiovascular Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
| | - Elham Alipoor
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran; Cardiac Primary Prevention Research Center, Cardiovascular Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mostafa Dahmardehei
- Department of Plastic Surgery, Burn Research Center, Motahari Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Mehdi Yaseri
- Department of Epidemiology and Biostatistics, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Emami
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed Davar Siadat
- Mycobacteriology and Pulmonary Research Department, Pasteur Institute of Iran, Tehran, Iran
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Hong X, Zhang Y, Ni H, Xiao Q, Yin Y, Ren J, Zhao P, Zhang Z, Li X, Li Y, Yang Y. Optimization of Fermented Maize Stover for the Fattening Phase of Geese: Effect on Production Performance and Gut Microflora. Animals (Basel) 2024; 14:433. [PMID: 38338076 PMCID: PMC10854615 DOI: 10.3390/ani14030433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/14/2024] [Accepted: 01/27/2024] [Indexed: 02/12/2024] Open
Abstract
To optimize the utilization of fermented maize stover (FMS) feed during the fattening phase of Xianghai flying geese (XFG), a total of 300 XFG at 125 days of age were randomly assigned to four dietary treatment groups with three replicates of 25 in each set. Group A was fed the basal fattening diet, while the B, C, and D groups were fed the basic fattening diet and diets supplemented with 5%, 10% or 15% FMS, respectively. The findings indicate that the production performance indicators (especially the dressed, eviscerated and breast muscle yield) of Group D closely resembled Group A more than Groups B and C. Intestinal morphometry found that the jejunal villus height and the villus height/crypt depth were significantly increased in Group D compared to Group A. Next, 16S rRNA amplicon sequencing of the extracted DNA revealed that beneficial microbiota (Coprococcus and Victivallis) showed increased abundance in Group D. Cecal flora function analysis further revealed that some amino acid and glycerol biosynthesis were found to be associated with growth performance in geese. These findings suggest that incorporating 15% FMS as a substitute for a portion of the feed during the fattening phase of XFG can effectively sustain their production performance, optimize the gut microbial community and morphometrical traits, provide new insight into using non-conventional feed resources to reduce feed cost and improve economic benefits in the breeding industry.
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Affiliation(s)
- Xiaoqing Hong
- College of Animal Science, Jilin University, Changchun 130062, China; (X.H.); (Y.Z.); (H.N.); (Q.X.); (Y.Y.); (J.R.); (P.Z.); (Z.Z.)
| | - Yonghong Zhang
- College of Animal Science, Jilin University, Changchun 130062, China; (X.H.); (Y.Z.); (H.N.); (Q.X.); (Y.Y.); (J.R.); (P.Z.); (Z.Z.)
| | - Hongyu Ni
- College of Animal Science, Jilin University, Changchun 130062, China; (X.H.); (Y.Z.); (H.N.); (Q.X.); (Y.Y.); (J.R.); (P.Z.); (Z.Z.)
| | - Qingxing Xiao
- College of Animal Science, Jilin University, Changchun 130062, China; (X.H.); (Y.Z.); (H.N.); (Q.X.); (Y.Y.); (J.R.); (P.Z.); (Z.Z.)
| | - Yijing Yin
- College of Animal Science, Jilin University, Changchun 130062, China; (X.H.); (Y.Z.); (H.N.); (Q.X.); (Y.Y.); (J.R.); (P.Z.); (Z.Z.)
| | - Jing Ren
- College of Animal Science, Jilin University, Changchun 130062, China; (X.H.); (Y.Z.); (H.N.); (Q.X.); (Y.Y.); (J.R.); (P.Z.); (Z.Z.)
| | - Puze Zhao
- College of Animal Science, Jilin University, Changchun 130062, China; (X.H.); (Y.Z.); (H.N.); (Q.X.); (Y.Y.); (J.R.); (P.Z.); (Z.Z.)
| | - Ziyi Zhang
- College of Animal Science, Jilin University, Changchun 130062, China; (X.H.); (Y.Z.); (H.N.); (Q.X.); (Y.Y.); (J.R.); (P.Z.); (Z.Z.)
| | - Xiaohui Li
- Center of Animal Experiment, College of Basic Medical Sciences, Jilin University, Changchun 130021, China;
| | - Yumei Li
- College of Animal Science, Jilin University, Changchun 130062, China; (X.H.); (Y.Z.); (H.N.); (Q.X.); (Y.Y.); (J.R.); (P.Z.); (Z.Z.)
| | - Yuwei Yang
- College of Animal Science, Jilin University, Changchun 130062, China; (X.H.); (Y.Z.); (H.N.); (Q.X.); (Y.Y.); (J.R.); (P.Z.); (Z.Z.)
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Costa KA, Oliveira MCD, Cordeiro LMDS, Val CH, Machado FS, Fernandes SOA, Cardoso VN, Teixeira MM, Silveira ALM, Ferreira AVM. Effect of high-refined carbohydrate diet on intestinal integrity. Nutrition 2023; 113:112084. [PMID: 37354649 DOI: 10.1016/j.nut.2023.112084] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 05/10/2023] [Accepted: 05/16/2023] [Indexed: 06/26/2023]
Abstract
OBJECTIVES One of the leading causes of obesity is the consumption of excess nutrients. Obesity is characterized by adipose tissue expansion, chronic low-grade inflammation, and metabolic alterations. Although consumption of a high-fat diet has been demonstrated to be a diet-induced obesity model associated with gut disorders, the same effect is not well explored in a mild-obesity model induced by high-refined carbohydrate (HC) diet intake. The intestinal tract barrier comprises mucus, epithelial cells, tight junctions, immune cells, and gut microbiota. This system is susceptible to dysfunction by excess dietary components that could increase intestinal permeability and bacterial translocation. The aim of this study was to evaluate whether an HC diet and the alterations resulting from its intake are linked to small intestine changes. METHODS Male BALB/c mice were fed a chow or an HC diet for 8 wk. RESULTS Although differences in body weight gain were not observed between the groups, mice fed the HC diet showed increased adiposity associated with metabolic alterations. The interferon-γ expression and myeloperoxidase levels were increased in the small intestine in mice fed an HC diet. However, the intestinal villi length, the expression of tight junctions (zonula occludens-1 and claudin-4) and tumor necrosis factor-α cytokine, and the percentage of intraepithelial lymphocytes did not differ in the jejunum or ileum between the groups. We did not observe differences in intestinal permeability and bacterial translocation. CONCLUSION Metabolic alterations caused by consumption of an HC diet lead to a mild obesity state that does not necessarily involve significant changes in intestinal integrity.
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Affiliation(s)
- Kátia Anunciação Costa
- Department of Nutrition, Nursing School, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Marina Chaves de Oliveira
- Department of Nutrition, Nursing School, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil; Department of Biochemistry and Immunology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | | | - Cynthia Honorato Val
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Fabiana Simão Machado
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | | | - Valbert Nascimento Cardoso
- Department of Clinical Analysis, Faculty of Pharmacy, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Mauro Martins Teixeira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ana Letícia Malheiros Silveira
- Department of Nutrition, Nursing School, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil; Department of Biochemistry and Immunology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Adaliene Versiani Matos Ferreira
- Department of Nutrition, Nursing School, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil; Department of Biochemistry and Immunology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
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Liu G, Ajao AM, Shanmugasundaram R, Taylor J, Ball E, Applegate TJ, Selvaraj R, Kyriazakis I, Olukosi OA, Kim WK. The effects of arginine and branched-chain amino acid supplementation to reduced-protein diet on intestinal health, cecal short-chain fatty acid profiles, and immune response in broiler chickens challenged with Eimeria spp. Poult Sci 2023; 102:102773. [PMID: 37236037 DOI: 10.1016/j.psj.2023.102773] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/30/2023] [Accepted: 05/04/2023] [Indexed: 05/28/2023] Open
Abstract
We investigated the effects of supplementing arginine (Arg) and branched-chain amino acids (BCAA) in broilers fed reduced-protein diets and challenged with Eimeria spp. All birds were fed the same starter diet meeting Cobb 500 nutrient specifications from d 1 to 9. Four grower diets: positive control (PC) with 20.0% crude protein (CP); reduced-protein negative control (NC) with 17.5% CP; or NC supplemented with Arg or BCAA at 50% above recommendations (ARG or BCAA) were fed to the birds from d 9 to 28. Birds were allocated in a 2 × 4 factorial arrangement (4 diets, each with or without challenge), with 8 replicates per treatment. On d 14, the challenge groups were orally gavaged with mixed Eimeria spp. Intestinal permeability was higher (P < 0.05) in NC than PC, whereas the permeability of ARG and BCAA groups did not differ significantly from PC. On d 28, a significant interaction (P < 0.01) was observed in CD8+: CD4+ ratios in cecal tonsils (CT), Eimeria challenge increased the ratios in all groups except for the ARG group. On d 21, a significant interaction was found for CD4+CD25+ percentages in CT (P < 0.01) that Eimeria challenge increased the percentages only in PC and NC groups. On d 21 and 28, significant interactions (P < 0.01) were found for macrophage nitric oxide (NO) production. In nonchallenged birds, NO was higher in the ARG group than other groups, but in challenged birds, NO was higher in both ARG and BCAA groups. On d 21, a significant interaction was found for bile anticoccidial IgA concentrations (P < 0.05) that Eimeria challenge increased IgA only in NC and ARG groups. The results suggest that a reduced-protein diet exacerbates the impact of the Eimeria challenge on intestinal integrity, but this could be mitigated by Arg and BCAA supplementations. Arginine and BCAA supplementations in reduced-protein diets could be beneficial for broilers against Eimeria infection by enhancing the immune responses. The beneficial effects of Arg supplementation tended to be more pronounced compared to BCAA supplementation.
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Affiliation(s)
- Guanchen Liu
- Department of Poultry Science, University of Georgia, Athens, GA 30602, USA
| | - Adeleye M Ajao
- Department of Poultry Science, University of Georgia, Athens, GA 30602, USA
| | - Revathi Shanmugasundaram
- Toxicology and Mycotoxin Research Unit, U.S. National Poultry Research Center, Agricultural Research Service, U.S. Department of Agriculture, Athens, GA 30605, USA
| | - James Taylor
- Agri-Food & Biosciences Institute (AFBI), Belfast, BT9 5PX, United Kingdom
| | - Elizabeth Ball
- Institute for Global Food Security, Queen's University, Belfast, BT9 5DL, United Kingdom
| | - Todd J Applegate
- Department of Poultry Science, University of Georgia, Athens, GA 30602, USA
| | - Ramesh Selvaraj
- Department of Poultry Science, University of Georgia, Athens, GA 30602, USA
| | - Ilias Kyriazakis
- Agri-Food & Biosciences Institute (AFBI), Belfast, BT9 5PX, United Kingdom.; Institute for Global Food Security, Queen's University, Belfast, BT9 5DL, United Kingdom
| | - Oluyinka A Olukosi
- Department of Poultry Science, University of Georgia, Athens, GA 30602, USA
| | - Woo K Kim
- Department of Poultry Science, University of Georgia, Athens, GA 30602, USA.
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Effects of high-/low-temperature and high-altitude hypoxic environments on gut microbiota of sports people: A retrospective analysis. SPORTS MEDICINE AND HEALTH SCIENCE 2023. [DOI: 10.1016/j.smhs.2023.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023] Open
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11
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Peng M, Yi W, Murong M, Peng N, Tong H, Jiang M, Jin D, Peng S, Liang W, Quan J, Li M, Shi L, Xiao G. Akkermansia muciniphila improves heat stress-impaired intestinal barrier function by modulating HSP27 in Caco-2 cells. Microb Pathog 2023; 177:106028. [PMID: 36796737 DOI: 10.1016/j.micpath.2023.106028] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/18/2023] [Accepted: 02/07/2023] [Indexed: 02/16/2023]
Abstract
OBJECTIVE Heat stress causes an elevation of intestinal epithelial barrier permeability and leads to multiple organ dysfunction in heatstroke. Akkermansia muciniphila (A. muciniphila) plays a role in maintaining intestinal integrity and improving the inflammatory state. This study aimed to investigate whether A. muciniphila could alleviate heat stress-induced dysfunction of intestinal permeability in Caco-2 monolayers and have the preventive effects on heatstroke. METHODS Human intestinal epithelial Caco-2 cells were preincubated with live or pasteurized A. muciniphila then exposed to heat stress at 43 °C. Transepithelial electrical resistance (TEER) and the flux of horseradish peroxidase (HRP) across cell monolayers were measured to determine intestinal permeability. The levels of the tight junction proteins Occludin, ZO-1 and HSP27 were analyzed by Western blotting. These proteins were immunostained and localized by fluorescence microscopy. TJ morphology was observed using transmission electron microscopy (TEM). RESULTS Both live and pasteurized A. muciniphila effectively attenuated the decrease in TEER and impairment of intestinal permeability in HRP flux induced by heat exposure. A. muciniphila significantly elevated the expression of Occludin and ZO-1 by promoting HSP27 phosphorylation. The distortion and redistribution of tight junction proteins and disruption of morphology were also effectively prevented by pretreatment with A. muciniphila. CONCLUSION This study indicates for the first time that both live and pasteurized A. muciniphila play an important protective role against heat-induced permeability dysfunction and epithelial barrier damage.
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Affiliation(s)
- Mian Peng
- Department of Critical Care Medicine, Shenzhen Luohu Hospital Group, Shenzhen, Guangdong, 518001, China
| | - Wanhua Yi
- Department of Critical Care Medicine, General Hospital of Southern Theater Command, Guangzhou, Guangdong, 510010, China
| | - Min Murong
- Department of Nutrition, General Hospital of Southern Theater Command, Guangzhou, Guangdong, 510010, China
| | - Na Peng
- Emergency Department, General Hospital of Southern Theater Command, Guangzhou, Guangdong, 510010, China
| | - Huasheng Tong
- Emergency Department, General Hospital of Southern Theater Command, Guangzhou, Guangdong, 510010, China
| | - Mengliu Jiang
- Department of Nutrition, General Hospital of Southern Theater Command, Guangzhou, Guangdong, 510010, China
| | - Di Jin
- Department of Nutrition, General Hospital of Southern Theater Command, Guangzhou, Guangdong, 510010, China
| | - Suliu Peng
- Department of Nutrition, General Hospital of Southern Theater Command, Guangzhou, Guangdong, 510010, China
| | - Weifen Liang
- Department of Nutrition, General Hospital of Southern Theater Command, Guangzhou, Guangdong, 510010, China
| | - Jingwen Quan
- Department of Nutrition, General Hospital of Southern Theater Command, Guangzhou, Guangdong, 510010, China
| | - Muman Li
- Department of Nutrition, General Hospital of Southern Theater Command, Guangzhou, Guangdong, 510010, China
| | - Linna Shi
- Department of Nutrition, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China.
| | - Guizhen Xiao
- Department of Nutrition, General Hospital of Southern Theater Command, Guangzhou, Guangdong, 510010, China; Huabo Post-Doctoral Research Center, Biological Pharmaceutical Research Institute, Guangzhou, Guangdong, 510010, China.
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12
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Greiner L, Humphrey D, Kerr B, Becker S, Breuer S, Hagen C, Elefson S, Haydon K. Water- and feed-based arginine impacts on gut integrity in weanling pigs. Transl Anim Sci 2023; 7:txad059. [PMID: 37469622 PMCID: PMC10353297 DOI: 10.1093/tas/txad059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 05/25/2023] [Indexed: 07/21/2023] Open
Abstract
Two hundred and forty newly weaned pigs (PIC, Hendersonville, TN) were used to determine if supplementing additional arginine (Arg) either in the water or in the feed, and the combinations thereof, improved intestinal integrity and growth performance in nursery pigs. Each of the 80 pens contained three pigs (21 ± 2 d of age) which were randomly allotted to treatments in 4 × 3 factorial arrangement consisting of four water treatments (0%, 4%, 8%, and 12% Arg stock delivered through a 1:128 medication delivery system) in combination with three dietary Arg treatments (1.35%, 1.55%, and 1.75% standardized ileal digestible Arg; SID). Pigs and feeders were weighed at the d0, d6 (water and diet change), d20 (diet change), and d41 for the calculation of average daily gain (ADG), average daily feed intake (ADFI), and feed efficiency (G:F). Eighty pigs, 1 pig/pen, were euthanized at d6 for ileum evaluation of villus height and crypt depth. The remaining pigs were taken off the Arg-water treatment and fed phase-2 diets formulated to contain 1.35%, 1.55%, and 1.75% SID Arg. All pigs received a common diet from d20 to d41. Data were analyzed by pen as repeated measures (SAS 9.4). No interaction between water- and dietary-Arg was detected on nursery pig growth performance. There was a significant quadratic effect of SID Arg in the feed on pig final body weight (BW), ADG, ADFI, and G:F (P ≤ 0.037), where feeding 1.55% dietary Arg tended to improve growth performance compared to the 1.35% level for the 41 d of the trial (P ≤ 0.088). The use of the stock 8% Arg in the water resulted in a reduction in crypt depth (0:132.5, 4:140.7, 8:117.3, 12:132.0; P ≤ 0.01) and an improvement in intestinal permeability. The 4% oral Arg significantly reduced villous height:crypt depth ratio (0:2.50, 4:2.09, 8:2.56, 12:2.43; P ≤ 0.02). In conclusion, the feeding of 1.55% Arg resulted in an improvement in nursery pig ADG, ADFI, G:F, and final BW but did not alter intestinal villi morphology; however, the use of Arg in the water resulted in an improvement in intestinal villi, but no phenotypical change in piglet growth in the nursery.
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Affiliation(s)
| | - Dalton Humphrey
- Department of Animal Science, Iowa State University, Ames, IA 50011, USA
| | - Brian Kerr
- USDA ARS, ARS National Laboratory for Agriculture and Environment, Ames, IA 50011, USA
| | - Spenser Becker
- Department of Animal Science, Iowa State University, Ames, IA 50011, USA
| | - Sophie Breuer
- Department of Animal Science, Iowa State University, Ames, IA 50011, USA
| | - Chloe Hagen
- Department of Animal Science, Iowa State University, Ames, IA 50011, USA
| | - Sarah Elefson
- Department of Animal Science, Iowa State University, Ames, IA 50011, USA
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Lee JKW, Tan B, Ogden HB, Chapman S, Sawka MN. Exertional heat stroke: nutritional considerations. Exp Physiol 2022; 107:1122-1135. [PMID: 35521757 PMCID: PMC9790308 DOI: 10.1113/ep090149] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 04/02/2022] [Indexed: 12/30/2022]
Abstract
NEW FINDINGS What is the topic of this review? The potential role of nutrition in exertional heat stroke. What advances does it highlight? Certain nutritional and dietary strategies used by athletes and workers may exert a protective effect the pathophysiological processes of exertional heat stroke, whereas others may be detrimental. While current evidence suggests that some of these practices may be leveraged as a potential countermeasure to exertional heat stroke, further research on injury-related outcomes in humans is required. ABSTRACT Exertional heat stroke (EHS) is a life-threatening illness and an enduring problem among athletes, military servicemen and -women, and occupational labourers who regularly perform strenuous activity, often under hot and humid conditions or when wearing personal protective equipment. Risk factors for EHS and mitigation strategies have generally focused on the environment, health status, clothing, heat acclimatization and aerobic conditioning, but the potential role of nutrition is largely underexplored. Various nutritional and dietary strategies have shown beneficial effects on exercise performance and health and are widely used by athletes and other physically active populations. There is also evidence that some of these practices may dampen the pathophysiological features of EHS, suggesting possible protection or abatement of injury severity. Promising candidates include carbohydrate ingestion, appropriate fluid intake and glutamine supplementation. Conversely, some nutritional factors and low energy availability may facilitate the development of EHS, and individuals should be cognizant of these. Therefore, the aims of this review are to present an overview of EHS along with its mechanisms and pathophysiology, discuss how selected nutritional considerations may influence EHS risk focusing on their impact on the key pathophysiological processes of EHS, and provide recommendations for future research. With climate change expected to increase EHS risk and incidence in the coming years, further investigation on how diet and nutrition may be optimized to protect against EHS would be highly beneficial.
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Affiliation(s)
- Jason K. W. Lee
- Human Potential Translational Research Program, Yong Loo Lin School of MedicineNational University of SingaporeSingapore,Heat Resilience and Performance Centre, Yong Loo Lin School of MedicineNational University of SingaporeSingapore,Department of Physiology, Yong Loo Lin School of MedicineNational University of SingaporeSingapore,N.1 Institute for HealthNational University of SingaporeSingapore,Global Asia InstituteNational University of SingaporeSingapore,Institute for Digital MedicineYong Loo Lin School of MedicineNational University of SingaporeSingapore,Singapore Institute for Clinical SciencesAgency for Science, Technology and Research (A*STAR)Singapore,Campus for Research Excellence and Technological Enterprise (CREATE)SingaporeSingapore
| | - Beverly Tan
- Human Potential Translational Research Program, Yong Loo Lin School of MedicineNational University of SingaporeSingapore,Campus for Research Excellence and Technological Enterprise (CREATE)SingaporeSingapore
| | - Henry B. Ogden
- Army Recruit Health and Performance ResearchHeadquarters of Army Recruiting and Initial Training Command, UpavonPewseyUK,Department of Sport, Health and WellbeingPlymouth Marjon UniversityPlymouthUK
| | - Shaun Chapman
- Army Recruit Health and Performance ResearchHeadquarters of Army Recruiting and Initial Training Command, UpavonPewseyUK,Cambridge Centre for Sport and Exercise SciencesSchool of Psychology and Sport ScienceAnglia Ruskin UniversityCambridgeUK
| | - Michael N. Sawka
- School of Biological SciencesGeorgia Institute of TechnologyAtlantaGAUSA
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Chen X, Liu W, Li H, Zhang J, Hu C, Liu X. The adverse effect of heat stress and potential nutritional interventions. Food Funct 2022; 13:9195-9207. [PMID: 36040720 DOI: 10.1039/d2fo01813f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Heat stress can cause tissue damage and metabolic disturbances, including intestinal and liver dysfunction, acid-base imbalance, oxidative damage, inflammatory response, and immune suppression. Serious cases can lead to heatstroke, which can be life-threatening. The body often finds it challenging to counteract these adverse effects, and traditional cooling methods are limited by the inconvenience of tool portability and the difficulty of determining the cooling endpoint. Consequently, more research was conducted to prevent and mitigate the negative effect of heat stress via nutritional intervention. This article reviewed the pathological changes and altered metabolic mechanisms caused by heat stress and discussed the protein (amino acid), vitamin, trace element, and electrolyte action pathways and mechanisms to mitigate heat stress and prevent heat-related disease. The main food sources for these nutrients and the recommended micronutrient supplementation forms were summarized to provide scientific dietary protocols for special populations.
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Affiliation(s)
- Xinwei Chen
- National Soybean Processing Industry Technology Innovation Center, School of Food and Health, Beijing Technology and Business University, Beijing, China.
| | - Wanlu Liu
- National Soybean Processing Industry Technology Innovation Center, School of Food and Health, Beijing Technology and Business University, Beijing, China.
| | - He Li
- National Soybean Processing Industry Technology Innovation Center, School of Food and Health, Beijing Technology and Business University, Beijing, China.
| | - Jian Zhang
- National Soybean Processing Industry Technology Innovation Center, School of Food and Health, Beijing Technology and Business University, Beijing, China.
| | - Changli Hu
- Jinmailang Beverage Corporation Limited, Beijing, China
| | - Xinqi Liu
- National Soybean Processing Industry Technology Innovation Center, School of Food and Health, Beijing Technology and Business University, Beijing, China.
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15
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Lian W, Gao D, Huang C, Zhong Q, Hua R, Lei M. Heat Stress Impairs Maternal Endometrial Integrity and Results in Embryo Implantation Failure by Regulating Transport-Related Gene Expression in Tongcheng Pigs. Biomolecules 2022; 12:biom12030388. [PMID: 35327580 PMCID: PMC8945854 DOI: 10.3390/biom12030388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 02/21/2022] [Accepted: 02/25/2022] [Indexed: 02/04/2023] Open
Abstract
Heat stress (HS) poses a significant threat to production and survival in the global swine industry. However, the molecular regulatory effects of heat stress on maternal endometrial cells are poorly understood in pigs during early embryo implantation. In this study, we systematically examined morphological changes in the endometrium and the corresponding regulation mechanism in response to HS by combining scanning electron microscopy (SEM), hematoxylin/eosin (H&E) staining, western blot, and RNA-seq analyses. Our results showed that HS led to porcine endometrium damage and endometrial thinness during embryo implantation. The expression levels of cell adhesion-related proteins, including N-cadherin and E-cadherin, in the uterus were significantly lower in the heat stress group (39 ± 1 °C, n = 3) than in the control group (28 ± 1 °C, n = 3). A total of 338 up-regulated genes and 378 down-regulated genes were identified in porcine endometrium under HS. The down-regulated genes were found to be mainly enriched in the pathways related to the microtubule complex, immune system process, and metalloendopeptidase activity, whereas the up-regulated genes were mainly involved in calcium ion binding, the extracellular region, and molecular function regulation. S100A9 was found to be one of the most significant differentially expressed genes (DEGs) in the endometrium under HS, and this gene could promote proliferation of endometrial cells and inhibit their apoptosis. Meanwhile, HS caused endometrial epithelial cell (EEC) damage and inhibited its proliferation. Overall, our results demonstrated that HS induced uterine morphological change and tissue damage by regulating the expression of genes associated with calcium ions and amino acid transport. These findings may provide novel molecular insights into endometrial damage under HS during embryo implantation.
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Affiliation(s)
- Weisi Lian
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (W.L.); (D.G.); (C.H.); (Q.Z.); (R.H.)
| | - Dengying Gao
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (W.L.); (D.G.); (C.H.); (Q.Z.); (R.H.)
| | - Cheng Huang
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (W.L.); (D.G.); (C.H.); (Q.Z.); (R.H.)
| | - Qiqi Zhong
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (W.L.); (D.G.); (C.H.); (Q.Z.); (R.H.)
| | - Renwu Hua
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (W.L.); (D.G.); (C.H.); (Q.Z.); (R.H.)
| | - Minggang Lei
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; (W.L.); (D.G.); (C.H.); (Q.Z.); (R.H.)
- National Engineering Research Center for Livestock, Huazhong Agricultural University, Wuhan 430070, China
- Department of Pig Production, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan 430070, China
- Correspondence:
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16
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Teng PY, Choi J, Yadav S, Tompkins YH, Kim WK. Effects of low-crude protein diets supplemented with arginine, glutamine, threonine, and methionine on regulating nutrient absorption, intestinal health, and growth performance of Eimeria-infected chickens. Poult Sci 2021; 100:101427. [PMID: 34551373 PMCID: PMC8463775 DOI: 10.1016/j.psj.2021.101427] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 07/16/2021] [Accepted: 07/21/2021] [Indexed: 11/29/2022] Open
Abstract
The study was conducted to evaluate the effects of low crude protein diets supplemented with arginine, glutamine, methionine, and/or threonine on apparent ileal digestibility of amino acids, intestinal morphology, intestinal permeability, gene expression of nutrient transporters, and tight junction proteins of broiler chickens challenged with mixed Eimeria spp. A total of five hundred seventy-six, 12-day-old male broiler chickens were allocated into 8 treatments, and 6 replicate cages of 12 chickens per cage. This experiment included a nonchallenged control (NC) fed regular corn-soybean meal-based diet (Regular diet, 19% crude protein), an Eimeria-challenged control (CC) fed Regular diet, an Eimeria challenge group fed low-crude protein diet (LCP, 16% crude protein), 4 Eimeria challenge groups fed low-crude protein diet supplemented with 0.75% arginine, glutamine, methionine, and threonine, respectively (ARG, GLN, MET, and THR), and an Eimeria challenge group fed low-crude protein diet with 0.75% supplemented arginine, glutamine, methionine, and threonine collectively as a combination group (COMB). On d 14, birds in the challenge groups were gavaged with a mixed Eimeria spp. solution containing 12,500 oocysts of E. maxima, 12,500 oocysts of E. tenella, and 62,500 oocysts of E. acervulina. The results showed that the Eimeria challenge reduced overall growth performance, but the LCP had no adverse impacts on intestinal health and growth of Eimeria-infected birds compared to the CC. Additionally, supplementation of crystalline arginine, glutamine, methionine, and threonine improved the apparent ileal digestibility of these specific amino acids on 6 dpi. Moreover, the THR treatment increased villus height in the duodenum. The ARG treatment decreased intestinal permeability and gene expression of amino acid transporters, whereas the GLN and THR treatments both reversed adverse effects of coccidiosis on gene expression of tight junction protein (claudin 1). However, the MET and COMB treatments exacerbated infection severity of coccidiosis. In summary, adding 0.75% of arginine, glutamine, or threonine in a low crude protein diet can improve the intestinal health of birds challenged with a mild coccidia infection.
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Affiliation(s)
- Po-Yun Teng
- Department of Poultry Science, University of Georgia, Athens, GA, USA
| | - Janghan Choi
- Department of Poultry Science, University of Georgia, Athens, GA, USA
| | - Sudhir Yadav
- Department of Poultry Science, University of Georgia, Athens, GA, USA
| | - Y H Tompkins
- Department of Poultry Science, University of Georgia, Athens, GA, USA
| | - Woo Kyun Kim
- Department of Poultry Science, University of Georgia, Athens, GA, USA.
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17
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Cantet JM, Yu Z, Ríus AG. Heat Stress-Mediated Activation of Immune-Inflammatory Pathways. Antibiotics (Basel) 2021; 10:antibiotics10111285. [PMID: 34827223 PMCID: PMC8615052 DOI: 10.3390/antibiotics10111285] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/09/2021] [Accepted: 10/12/2021] [Indexed: 12/23/2022] Open
Abstract
Physiological changes in animals exposed to elevated ambient temperature are characterized by the redistribution of blood toward the periphery to dissipate heat, with a consequent decline in blood flow and oxygen and nutrient supply to splanchnic tissues. Metabolic adaptations and gut dysfunction lead to oxidative stress, translocation of lumen contents, and release of proinflammatory mediators, activating a systemic inflammatory response. This review discusses the activation and development of the inflammatory response in heat-stressed models.
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18
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Tang S, Zhang S, Zhong R, Su D, Xia B, Liu L, Chen L, Zhang H. Time-course alterations of gut microbiota and short-chain fatty acids after short-term lincomycin exposure in young swine. Appl Microbiol Biotechnol 2021; 105:8441-8456. [PMID: 34651253 DOI: 10.1007/s00253-021-11627-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 09/26/2021] [Accepted: 09/28/2021] [Indexed: 02/06/2023]
Abstract
Increasing evidence suggests that antibiotic administration causes gut injury, negatively affecting nutrient digestion, immune regulation, and colonization resistance against pathogens due to the disruption of gut microbiota. However, the time-course effects of therapeutic antibiotics on alterations of gut microbes and short-chain fatty acids (SCFAs) in young swine are still unknown. In this study, twenty piglets were assigned into two groups and fed commercial diets with or without lincomycin in the first week for a 28-day trial period. Results showed that 1-week lincomycin exposure (LE) did reduce the body weight on day 14 (p = 0.0450) and 28 (p = 0.0362). The alpha-diversity notably reduced after 1-week LE, and then gradually raised and reached the control group level in the second week on cessation of LE, indicated by the variation of Sobs, Chao, Shannon, and ACE index (p < 0.05). Beta-diversity analysis revealed that the distinct microbial cluster existed persistently for the whole trial period between two groups (p < 0.001). The relative abundance of most microbes including fiber-degrading (e.g., Agathobacter and Coprococcus), beneficial (e.g., Lactobacillus and Mitsuokella), or pathogenic bacteria (e.g., Terrisporobacter and Lachnoclostridium) decreased (LDA score > 3), and the concentration of SCFAs also diminished in the feces of 1-week lincomycin-administrated young swine, indicating that therapeutic LE killed most bacteria and reduced SCFA production with gut dysbiosis occurring. After the LE stopped, the state of gut dysbiosis gradually attenuated and formed new gut-microbe homeostasis distinct from microbial homeostasis of young pigs unexposed to lincomycin. The increased presence of potential pathogens, such as Terrisporobacter, Negativibacillus, and Escherichia-Shigella, and decreased beneficial bacteria, such as Lactobacillus and Agathobacter, were observed in new homeostasis reshaped by short-lincomycin administration (LDA score > 3 or p < 0.05), adversely affecting gut development and health of young pigs. Collectively, these results suggested that severe disruption of the commensal microbiota occurred after short-term LE or termination of LE in young swine. KEY POINTS: • Therapeutic lincomycin exposure induced gut dysbiosis, killing most bacteria and reducing short-chain fatty acid production. • Gut dysbiosis gradually attenuated and formed new homeostasis after lincomycin exposure stopped. • The new homeostasis, increased Escherichia-Shigella etc. and decreased Lactobacillus etc., was potentially harmful to gut health.
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Affiliation(s)
- Shanlong Tang
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China
| | - Shunfen Zhang
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China
| | - Ruqing Zhong
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China.
| | - Dan Su
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China.,College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, People's Republic of China
| | - Bing Xia
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China
| | - Lei Liu
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China
| | - Liang Chen
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China
| | - Hongfu Zhang
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, People's Republic of China
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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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20
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Sadowska-Krępa E, Rozpara M, Rzetecki A, Bańkowski S, Żebrowska A, Pilch W. Strenuous 12-h run elevates circulating biomarkers of oxidative stress, inflammation and intestinal permeability in middle-aged amateur runners: A preliminary study. PLoS One 2021; 16:e0249183. [PMID: 33793597 PMCID: PMC8016300 DOI: 10.1371/journal.pone.0249183] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 03/13/2021] [Indexed: 01/08/2023] Open
Abstract
Given the solid evidence that prolonged strenuous exercise is a cause of metabolic stress, this study sought to determine whether a 12-h run would affect total oxidant status (TOS), total oxidant capacity (TOC), total antioxidant status (TAS), high-sensitivity C-reactive protein (hs-CRP) and the biomarkers of intestinal permeability (protein fatty acid-binding proteins (I-FABP) and zonulin) in middle-aged male subjects. Ten amateur long-distance runners (aged 52.0 ± 6.2 years, body height 176.9 ± 4.9 cm, body mass 73.9 ± 6.0 kg) were enrolled in the study. The venous blood samples were collected 1 hour before and right after the run and were analyzed for the levels of TAS, TOS/TOC, hs-CRP, I-FABP and zonulin. The post-run concentrations of TOS/TOC were significantly elevated (p < 0.001), but TAS changes were not significant. Pearson's correlation coefficients calculated for the post run values of TAS and TOS/TOC were statistically significant and negative (r = -0.750, p < 0.05). Significant increases in the concentrations of hs-CRP (p < 0.001), I-FABP (p < 0.05) and zonulin (p < 0.01) were noted. The results indicate that a strenuous 12-h run disturbs the prooxidant-antioxidant balance in middle-aged men, as well as promoting inflammation and impairing intestinal permeability.
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Affiliation(s)
- Ewa Sadowska-Krępa
- Institute of Sport Sciences, Jerzy Kukuczka Academy of Physical Education, Katowice, Poland
| | - Michał Rozpara
- Institute of Sport Sciences, Jerzy Kukuczka Academy of Physical Education, Katowice, Poland
| | - Adam Rzetecki
- Institute of Sport Sciences, Jerzy Kukuczka Academy of Physical Education, Katowice, Poland
| | - Sebastian Bańkowski
- Institute of Sport Sciences, Jerzy Kukuczka Academy of Physical Education, Katowice, Poland
| | - Aleksandra Żebrowska
- Institute of Sport Sciences, Jerzy Kukuczka Academy of Physical Education, Katowice, Poland
| | - Wanda Pilch
- Department of Chemistry and Biochemistry, Institute for Basic Science, University of Physical Education, Krakow, Poland
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21
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Jo HE, Kwon MS, Whon TW, Kim DW, Yun M, Lee J, Shin MY, Kim SH, Choi HJ. Alteration of Gut Microbiota After Antibiotic Exposure in Finishing Swine. Front Microbiol 2021; 12:596002. [PMID: 33643231 PMCID: PMC7906994 DOI: 10.3389/fmicb.2021.596002] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 01/21/2021] [Indexed: 12/21/2022] Open
Abstract
Subclinical doses of antimicrobials are commonly used in the swine industry to control infectious diseases and growth performance. Accumulating evidence suggests that swine administered with antibiotics are susceptible to disease development due to disruption of the beneficial gut microbial community, which is associated with host immune regulation, nutrient digestion, and colonization resistance against pathogens. In this study, we found that finishing swine administered with lincomycin showed gut dysbiosis and increased diarrhea incidence compared with control swine. 16S rRNA amplicon sequencing was used to analyze the gut microbiota in finishing swine administered with lincomycin. The relative abundance of detrimental microbes, such as species of Clostridium, Aerococcus, Escherichia-Shigella, and Corynebacterium was increased in the feces of lincomycin-administered finishing swine, but that of bacteria associated with fiber degradation, such as species of Treponema, Succinivibrio, Fibrobacter, and Cellulosilyticum was decreased. Moreover, administration of lincomycin significantly increased the enrichment of metabolic pathways related to pathogenicity and deficiency of polysaccharide degradation. These results suggest that lincomycin treatment could cause severe disruption of the commensal microbiota in finishing swine.
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Affiliation(s)
- Hee Eun Jo
- Microbiology and Functionality Research Group, World Institute of Kimchi, Gwangju, South Korea.,Department of Animal Science and Biotechnology, Chonnam National University, Gwangju, South Korea
| | - Min-Sung Kwon
- Microbiology and Functionality Research Group, World Institute of Kimchi, Gwangju, South Korea
| | - Tae Woong Whon
- Microbiology and Functionality Research Group, World Institute of Kimchi, Gwangju, South Korea
| | - Doo Wan Kim
- Swine Division, National Institute of Animal Science, Rural Development Administration, Cheonan, South Korea
| | - Misun Yun
- Microbiology and Functionality Research Group, World Institute of Kimchi, Gwangju, South Korea
| | - Jieun Lee
- Microbiology and Functionality Research Group, World Institute of Kimchi, Gwangju, South Korea
| | - Mi-Young Shin
- Microbiology and Functionality Research Group, World Institute of Kimchi, Gwangju, South Korea.,Department of Animal Science and Bioindustry, Chonnam National University, Gwangju, South Korea
| | - Sung-Hak Kim
- Department of Animal Science and Biotechnology, Chonnam National University, Gwangju, South Korea
| | - Hak-Jong Choi
- Microbiology and Functionality Research Group, World Institute of Kimchi, Gwangju, South Korea
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22
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Shang FLT, Wanner SP, Damasceno WC, Martins YAT, Silva A, Prado LS. Independent effects of rapid eye movement sleep deprivation and exposure to environmental heat stress on aerobic performance and thermoregulatory responses in exercising rats. Temperature (Austin) 2020; 8:188-201. [PMID: 33997117 DOI: 10.1080/23328940.2020.1829939] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Evidence indicates that aerobic performance is degraded either by environmental heat stress or sleep deprivation. However, whether these conditions interact to produce more significant performance impairment deserves further investigation. Therefore, this study investigated the effects of experimental sleep deprivation (24 h or 96 h) on aerobic performance and thermoregulatory responses in rats exercised on a treadmill at different environmental conditions. Adult male Wistar rats were subjected to rapid eye movement sleep deprivation (RSD) using the modified multiple platform method and were then subjected to an incremental-speed exercise until they were fatigued. Treadmill running was performed in a temperate (24°C) or warm (31°C) environment, and the colonic temperature (an index of core body temperature; TCORE) and the tail-skin temperature (TSKIN; an index of cutaneous heat loss) were recorded. 24-h and 96-h RSD produced small magnitude reductions in aerobic performance (Cohen's d = 0.47-0.58) and minor changes in thermoregulation. Relative to control rats, sleep-deprived rats showed a higher TCORE at the exercise initiation and a higher threshold for activating cutaneous heat loss, but unchanged TCORE and TSKIN at fatigue. Exercise at 31°C induced large reductions in performance (d = 0.82-1.29) and marked changes in thermoregulation, as evidenced by higher TCORE and TSKIN at fatigue, compared to exercise at 24°C. Interestingly, none of the effects induced by RSD were exacerbated by environmental heat stress and vice-versa, indicating that both conditions did not interact. We conclude that RSD and heat stress modulate aerobic performance and thermoregulatory responses by acting independently.
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Affiliation(s)
- Felipe Lioe Teh Shang
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Samuel Penna Wanner
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - William Coutinho Damasceno
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ygor Antônio Tinoco Martins
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Andressa Silva
- Psychobiology and Exercise Studies Centre, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Luciano Sales Prado
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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23
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Castro FLS, Teng PY, Yadav S, Gould RL, Craig S, Pazdro R, Kim WK. The effects of L-Arginine supplementation on growth performance and intestinal health of broiler chickens challenged with Eimeria spp. Poult Sci 2020; 99:5844-5857. [PMID: 33142502 PMCID: PMC7647855 DOI: 10.1016/j.psj.2020.08.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 07/22/2020] [Accepted: 08/07/2020] [Indexed: 12/28/2022] Open
Abstract
This study evaluated the effects of varying levels of L-arginine (Arg) on performance and intestinal health of broilers challenged with Eimeria. Cobb 500 male chicks (n = 720) were randomly distributed in a 5 × 2 factorial arrangement (6 replicates/12 birds). The main factors were Arg levels (1.04, 1.14, 1.24, 1.34, 1.44%) and challenge or non-challenge with Eimeria. At day 12, in the challenge group, each bird received orally 12,500 Eimeria maxima, 12,500 Eimeria tenella, and 62,500 Eimeria acervulina sporulated oocysts. At 5 d postinfection (dpi), intestinal permeability was measured. At 6 and 14 dpi, performance, intestinal histomorphology, nutrient digestibility, tight junction protein (TJP) gene expression, and antioxidant markers were evaluated. Few interactions were found, and when significant, the supplementation of Arg did not counteract the negative effects of Eimeria challenge. Challenge, regardless of Arg level, increased intestinal permeability, although the expression of Claudin-1, a TJP, was upregulated. At 6 dpi, the antioxidant system was impaired by the challenge. Moreover, growth performance, intestinal histomorphology, and nutrient digestibility were negatively affected by challenge at 6 and 14 dpi. Regardless of challenge, from 0 to 14 dpi, birds fed 1.44% showed higher weight gain than 1.04% of Arg, and birds fed 1.34% showed lower feed conversion than 1.04% of Arg. At 5 dpi, intestinal permeability was improved in birds fed 1.34% than 1.04% of Arg. Moreover, 1.34% of Arg upregulated the expression of the TJP Zonula occludens-1 (ZO-1) as compared with 1.24 and 1.44% of Arg at 6 dpi. At 14 dpi, 1.44% of Arg upregulated the expression of ZO-1 and ZO-2 compared with 1.24 and 1.34% of Arg. The nutrient digestibility was quadratically influenced by Arg, whereas the antioxidant markers were unaffected. Thus, the challenge with Eimeria had a negative impact on growth and intestinal health. The dietary supplementation of levels ranging from 1.24 to 1.44% of Arg showed promising results, improving overall growth, intestinal integrity, and morphology in broilers subjected or not to Eimeria challenge.
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Affiliation(s)
- Fernanda L S Castro
- Department of Poultry Science, University of Georgia, Athens, GA, 30602, USA
| | - Po-Yun Teng
- Department of Poultry Science, University of Georgia, Athens, GA, 30602, USA
| | - Sudhir Yadav
- Department of Poultry Science, University of Georgia, Athens, GA, 30602, USA
| | - Rebecca L Gould
- Department of Foods and Nutrition, University of Georgia (UGA), Athens, GA, USA
| | - Steven Craig
- Department of Foods and Nutrition, University of Georgia (UGA), Athens, GA, USA
| | - Robert Pazdro
- Department of Foods and Nutrition, University of Georgia (UGA), Athens, GA, USA
| | - Woo K Kim
- Department of Poultry Science, University of Georgia, Athens, GA, 30602, USA.
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24
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Yu C, Zhang J, Qin Q, Liu J, Xu J, Xu W. Berberine improved intestinal barrier function by modulating the intestinal microbiota in blunt snout bream (Megalobrama amblycephala) under dietary high-fat and high-carbohydrate stress. FISH & SHELLFISH IMMUNOLOGY 2020; 102:336-349. [PMID: 32360278 DOI: 10.1016/j.fsi.2020.04.052] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 04/20/2020] [Accepted: 04/23/2020] [Indexed: 06/11/2023]
Abstract
The study investigated whether dietary berberine supplementation could improve intestinal barrier against inflammation induced by high-fat and high-carbohydrate diets in blunt snout bream. Fish (average initial weight 44.83 ± 0.06 g) were fed with six kinds of diets (control, high-fat diet (10% lipid) and high-carbohydrate (43% nitrogen-free extract) diet, control/berberine, high-fat/berberine or high-carbohydrate/berberine) for 8 weeks, respectively. Feeding mode of berberine (50 mg/kg diet) was adopted to two-week interval. After feeding trial, fish growth performance and intestinal barrier function were estimated. The result showed that no significant interactions between diet and berberine in growth performance, whole body composition or protein utilization were observed (P > 0.05). Specific growth rate (SGR) and feed conversion ratio (FCR) were significantly affected by berberine (P < 0.05). Protein efficiency ratio (PER), nitrogen retention (NRE), fish whole-body lipid contents increased greatly in high-fat or high-carbohydrate diets (P < 0.05). Significant interactions between diet and berberine were observed in fish intestinal barrier (physical, chemical, immunological and microbiological barriers) (P < 0.05). High-fat and high-carbohydrate diets could increase significantly intestinal permeability and inflammatory response, decrease intestinal mucins gene expression levels, and make the intestinal microbiota out of balance (P < 0.05). Berberine significantly inhibited inflammation response and modulated intestinal microflora profile (P < 0.05). Taken together, berberine could alleviate intestinal barrier damage injured by high-fat or high-carbohydrate diet and improve the growth performance of blunt snout bream.
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Affiliation(s)
- Chengbing Yu
- Shanghai Key Laboratory for Veterinary and Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University, No.800 Dongchuan Road, Shanghai, 200240, PR China
| | - Jing Zhang
- Shanghai Key Laboratory for Veterinary and Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University, No.800 Dongchuan Road, Shanghai, 200240, PR China
| | - Qin Qin
- Institute of Chinese Traditional Surgery, Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, No.725 Wanping South Road, Shanghai, 200032, PR China
| | - Jin Liu
- Shanghai Key Laboratory for Veterinary and Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University, No.800 Dongchuan Road, Shanghai, 200240, PR China
| | - Jianxiong Xu
- Shanghai Key Laboratory for Veterinary and Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University, No.800 Dongchuan Road, Shanghai, 200240, PR China
| | - Weina Xu
- Shanghai Key Laboratory for Veterinary and Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University, No.800 Dongchuan Road, Shanghai, 200240, PR China.
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25
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Ribeiro Hudson AS, Nascimento Soares AD, Coelho Horta NA, Fuscaldi LL, Machado-Moreira CA, Soares DD, Coimbra CC, de Oliveira Poletini M, Cardoso VN, Wanner SP. The magnitude of physical exercise-induced hyperthermia is associated with changes in the intestinal permeability and expression of tight junction genes in rats. J Therm Biol 2020; 91:102610. [PMID: 32716860 DOI: 10.1016/j.jtherbio.2020.102610] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 04/01/2020] [Accepted: 04/25/2020] [Indexed: 12/19/2022]
Abstract
We investigated whether the magnitude of exercise-induced hyperthermia influences intestinal permeability and tight junction gene expression. Twenty-nine male Wistar rats were divided into four groups: rest at 24 °C and exercise at 13 °C, 24 °C or 31 °C. The exercise consisted of a 90-min treadmill run at 15 m/min, and different ambient temperatures were used to produce distinct levels of exercise-induced hyperthermia. Before the experimental trials, the rats were treated by gavage with diethylenetriaminepentaacetic acid labeled with technetium-99 metastable as a radioactive probe. The rats' core body temperature (TCORE) was measured by telemetry. Immediately after the trials, the rats were euthanized, and the intestinal permeability was assessed by measuring the radioactivity of blood samples. The mRNA levels of occludin and zonula occludens-1 (ZO-1) genes were determined in duodenum samples. Exercise at 24 °C increased TCORE to values close to 39 °C, without changing permeability compared with the resting trial at the same environment. Meanwhile, rats' TCORE exceeded 40 °C during exercise at 31 °C, leading to greater permeability relative to those observed after exercise in the other ambient temperatures (e.g., 0.0037%/g at 31 °C vs. 0.0005%/g at 13 °C; data expressed as medians; p < 0.05). Likewise, the rats exercised at 31 °C exhibited higher mRNA levels of ZO-1 and occludin genes than the rats exercised at 24 °C or 13 °C. The changes in permeability and gene expression were positively and significantly associated with the magnitude of hyperthermia. We conclude that marked hyperthermia caused by exercise in the warmer environment increases intestinal permeability and mRNA levels of tight junction genes.
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Affiliation(s)
- Alexandre Sérvulo Ribeiro Hudson
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Anne Danieli Nascimento Soares
- Department of Clinical and Toxicological Analyses, Faculty of Pharmacy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Nayara Abreu Coelho Horta
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Leonardo Lima Fuscaldi
- Department of Clinical and Toxicological Analyses, Faculty of Pharmacy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Christiano Antônio Machado-Moreira
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Danusa Dias Soares
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Cândido Celso Coimbra
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Maristela de Oliveira Poletini
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Valbert Nascimento Cardoso
- Department of Clinical and Toxicological Analyses, Faculty of Pharmacy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Samuel Penna Wanner
- Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
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Hylander BL, Repasky EA. Temperature as a modulator of the gut microbiome: what are the implications and opportunities for thermal medicine? Int J Hyperthermia 2020; 36:83-89. [PMID: 31795833 DOI: 10.1080/02656736.2019.1647356] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
There is substantial research being conducted on the relationships between the gut microbiome, the immune response and health and disease. Environmental temperature and heat stress are known to modify the gut microbiome. Changes in core temperature have been linked, in multiple phyla, to altered microbiome composition and function. This raises the question of whether local/regional or whole body thermal therapies which target tumors in the abdomen, peritoneal cavity, or pelvis influence the gut microbiome. To date, there is little information on whether thermal therapy exerts positive or negative effects on the microbiome. This is an intriguing question since there is growing interest in the immunological impact of various thermal therapies. The goal of this brief review is to highlight research on how environmental conditions, particularly temperature (internal as well as external temperatures) influences the gut microbiome. Given the potential for temperature shifts to modulate gut microbe function and composition, it is likely that various forms of thermal therapy, including hyperthermic intraperitoneal chemotherapy (HIPEC), deep regional, and whole body hyperthermia influence the microbiome in ways that are currently not appreciated. More research is needed to determine whether thermal therapy induced changes in the microbiome occur, and whether they are beneficial or detrimental to the host. Currently, although approaches to microbiome modification such as dietary intervention, fecal transfer, probiotics and prebiotics are being developed, the potential of temperature manipulation has, as yet, not been explored. Therefore, new research could reveal whether perturbations of the microbiome composition that have negative health consequences (dysbiosis) could be an important target for treatment by thermal medicine.
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Affiliation(s)
- Bonnie L Hylander
- Department of Immunology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
| | - Elizabeth A Repasky
- Department of Immunology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
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27
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Beyond Heat Stress: Intestinal Integrity Disruption and Mechanism-Based Intervention Strategies. Nutrients 2020; 12:nu12030734. [PMID: 32168808 PMCID: PMC7146479 DOI: 10.3390/nu12030734] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/05/2020] [Accepted: 03/06/2020] [Indexed: 12/11/2022] Open
Abstract
The current climate changes have increased the prevalence and intensity of heat stress (HS) conditions. One of the initial consequences of HS is the impairment of the intestinal epithelial barrier integrity due to hyperthermia and hypoxia following blood repartition, which often results in a leaky gut followed by penetration and transfer of luminal antigens, endotoxins, and pathogenic bacteria. Under extreme conditions, HS may culminate in the onset of “heat stroke”, a potential lethal condition if remaining untreated. HS-induced alterations of the gastrointestinal epithelium, which is associated with a leaky gut, are due to cellular oxidative stress, disruption of intestinal integrity, and increased production of pro-inflammatory cytokines. This review summarizes the possible resilience mechanisms based on in vitro and in vivo data and the potential interventions with a group of nutritional supplements, which may increase the resilience to HS-induced intestinal integrity disruption and maintain intestinal homeostasis.
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28
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Ogden HB, Child RB, Fallowfield JL, Delves SK, Westwood CS, Layden JD. The Gastrointestinal Exertional Heat Stroke Paradigm: Pathophysiology, Assessment, Severity, Aetiology and Nutritional Countermeasures. Nutrients 2020; 12:E537. [PMID: 32093001 PMCID: PMC7071449 DOI: 10.3390/nu12020537] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 02/14/2020] [Accepted: 02/15/2020] [Indexed: 12/12/2022] Open
Abstract
Exertional heat stroke (EHS) is a life-threatening medical condition involving thermoregulatory failure and is the most severe condition along a continuum of heat-related illnesses. Current EHS policy guidance principally advocates a thermoregulatory management approach, despite growing recognition that gastrointestinal (GI) microbial translocation contributes to disease pathophysiology. Contemporary research has focused to understand the relevance of GI barrier integrity and strategies to maintain it during periods of exertional-heat stress. GI barrier integrity can be assessed non-invasively using a variety of in vivo techniques, including active inert mixed-weight molecular probe recovery tests and passive biomarkers indicative of GI structural integrity loss or microbial translocation. Strenuous exercise is strongly characterised to disrupt GI barrier integrity, and aspects of this response correlate with the corresponding magnitude of thermal strain. The aetiology of GI barrier integrity loss following exertional-heat stress is poorly understood, though may directly relate to localised hyperthermia, splanchnic hypoperfusion-mediated ischemic injury, and neuroendocrine-immune alterations. Nutritional countermeasures to maintain GI barrier integrity following exertional-heat stress provide a promising approach to mitigate EHS. The focus of this review is to evaluate: (1) the GI paradigm of exertional heat stroke; (2) techniques to assess GI barrier integrity; (3) typical GI barrier integrity responses to exertional-heat stress; (4) the aetiology of GI barrier integrity loss following exertional-heat stress; and (5) nutritional countermeasures to maintain GI barrier integrity in response to exertional-heat stress.
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Affiliation(s)
- Henry B. Ogden
- Faculty of Sport, Health and Wellbeing, Plymouth MARJON University, Derriford Rd, Plymouth PL6 8BH, UK; (C.S.W.); (J.D.L.)
| | - Robert B. Child
- School of Chemical Engineering, University of Birmingham, Birmingham B15 2QU, UK;
| | | | - Simon K. Delves
- Institute of Naval Medicine, Alverstoke PO12 2DW, UK; (J.L.F.); (S.K.D.)
| | - Caroline S. Westwood
- Faculty of Sport, Health and Wellbeing, Plymouth MARJON University, Derriford Rd, Plymouth PL6 8BH, UK; (C.S.W.); (J.D.L.)
| | - Joseph D. Layden
- Faculty of Sport, Health and Wellbeing, Plymouth MARJON University, Derriford Rd, Plymouth PL6 8BH, UK; (C.S.W.); (J.D.L.)
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29
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Yi H, Xiong Y, Wu Q, Wang M, Liu S, Jiang Z, Wang L. Effects of dietary supplementation with l-arginine on the intestinal barrier function in finishing pigs with heat stress. J Anim Physiol Anim Nutr (Berl) 2019; 104:1134-1143. [PMID: 31879983 DOI: 10.1111/jpn.13277] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 11/05/2019] [Accepted: 11/10/2019] [Indexed: 12/11/2022]
Abstract
Previous studies showed heat stress reduces body weight gain and feed intake associated with damaged intestinal barrier function, and l-arginine (L-Arg) enhanced intestinal barrier function in young animals under stress. The aim of this study was to evaluate effects of L-Arg on serum hormones, intestinal morphology, nutrients absorption and epithelial barrier functions in finishing pigs with heat stress. Forty-eight finishing pigs (Landrace) were balanced for sex and then randomly assigned to six groups: TN group, thermal neutral (22°C, ~80% humidity) with a basal diet; HS group, heat stress (cyclical 35°C for 12 hr and 22°C for 12 hr, ~80% humidity) with a basal diet; PF group, thermal neutral (22°C, ~80% humidity) and pair-fed with the HS; the TNA, HSA and PFA groups were the basal diet of TN group, HS group and PF group supplemented with 1% L-Arg. Results showed that HS decreased (p < .05) the thyroxine concentrations and increased (p < .05) the insulin concentrations in serum compared with the TN group, but 1% L-Arg had no significant effects on them. Both HS and PF significantly increased (p < .05) the mRNA expression of cationic amino acid transporters (CAT1 and CAT2) and decreased the mRNA expression of solute carrier family 5 member 10 (SGLT1) in the jejunum compared with the TN group. Compared with the TN group, HS reduced the expression of tight junction (TJ) protein zonula occluden-1 (ZO-1) and occludin, but PF only decreased ZO-1 expression in the jejunum. Results exhibited that dietary supplementation with 1% L-Arg improved the intestinal villous height, the ratio of villous height to crypt depth, and the expression of occludin and porcine beta-defensin 2 (pBD2) in the jejunum of intermittent heat-treated finishing pigs. In conclusion, dietary supplementation with 1% L-Arg could partly attenuate the intermittent heat-induced damages of intestinal morphology and epithelial barrier functions in finishing pigs.
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Affiliation(s)
- Hongbo Yi
- Key Laboratory of Animal Nutrition and Feed Science in South China of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Yunxia Xiong
- Key Laboratory of Animal Nutrition and Feed Science in South China of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Qiwen Wu
- Key Laboratory of Animal Nutrition and Feed Science in South China of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Mengzhu Wang
- Key Laboratory of Animal Nutrition and Feed Science in South China of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Shuai Liu
- Key Laboratory of Animal Nutrition and Feed Science in South China of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Zongyong Jiang
- Key Laboratory of Animal Nutrition and Feed Science in South China of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Li Wang
- Key Laboratory of Animal Nutrition and Feed Science in South China of Ministry of Agriculture, State Key Laboratory of Livestock and Poultry Breeding, Guangdong Public Laboratory of Animal Breeding and Nutrition, Guangdong Key Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
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Parsons IT, Stacey MJ, Woods DR. Heat Adaptation in Military Personnel: Mitigating Risk, Maximizing Performance. Front Physiol 2019; 10:1485. [PMID: 31920694 PMCID: PMC6928107 DOI: 10.3389/fphys.2019.01485] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 11/21/2019] [Indexed: 12/22/2022] Open
Abstract
The study of heat adaptation in military personnel offers generalizable insights into a variety of sporting, recreational and occupational populations. Conversely, certain characteristics of military employment have few parallels in civilian life, such as the imperative to achieve mission objectives during deployed operations, the opportunity to undergo training and selection for elite units or the requirement to fulfill essential duties under prolonged thermal stress. In such settings, achieving peak individual performance can be critical to organizational success. Short-notice deployment to a hot operational or training environment, exposure to high intensity exercise and undertaking ceremonial duties during extreme weather may challenge the ability to protect personnel from excessive thermal strain, especially where heat adaptation is incomplete. Graded and progressive acclimatization can reduce morbidity substantially and impact on mortality rates, yet individual variation in adaptation has the potential to undermine empirical approaches. Incapacity under heat stress can present the military with medical, occupational and logistic challenges requiring dynamic risk stratification during initial and subsequent heat stress. Using data from large studies of military personnel observing traditional and more contemporary acclimatization practices, this review article (1) characterizes the physical challenges that military training and deployed operations present (2) considers how heat adaptation has been used to augment military performance under thermal stress and (3) identifies potential solutions to optimize the risk-performance paradigm, including those with broader relevance to other populations exposed to heat stress.
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Affiliation(s)
- Iain T. Parsons
- Academic Department of Military Medicine, Research and Clinical Innovation, Royal Centre for Defence Medicine, Birmingham, United Kingdom
- School of Cardiovascular Medicine & Sciences, Faculty of Life Sciences & Medicine, King’s College London, London, United Kingdom
| | - Michael J. Stacey
- Academic Department of Military Medicine, Research and Clinical Innovation, Royal Centre for Defence Medicine, Birmingham, United Kingdom
- Department of Diabetes and Endocrinology, Imperial College Healthcare NHS Trust, London, United Kingdom
| | - David R. Woods
- Academic Department of Military Medicine, Research and Clinical Innovation, Royal Centre for Defence Medicine, Birmingham, United Kingdom
- Department of Sport and Exercise Endocrinology, Carnegie Research Institute, Leeds Beckett University, Leeds, United Kingdom
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L-Arginine alleviates heat stress-induced intestinal epithelial barrier damage by promoting expression of tight junction proteins via the AMPK pathway. Mol Biol Rep 2019; 46:6435-6451. [PMID: 31576512 DOI: 10.1007/s11033-019-05090-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 09/22/2019] [Indexed: 01/11/2023]
Abstract
Heat stress (HS) and secondary restricted blood flow to the intestines cause dysfunction of the intestinal epithelial barrier. Tight junctions (TJs) are essential to maintain intestinal integrity. L-Arginine has beneficial effects on gut functions. However, the underlying mechanisms remain largely unknown. This study tested the hypothesis that L-arginine regulates the TJ network by activating AMP-activated protein kinase (AMPK) signaling, which in turn improves intestinal barrier functions under HS. IEC-6 cells and rat small intestines were used as experiment models of heat stress. AICAR and dorsomorphin were used to activate and inhibit the AMPK pathway, respectively. Cell proliferation, apoptosis, differential gene expression and KEGG pathway analysis, intestinal paracellular permeability, intestinal morphology, and expression of HSP and TJ proteins, and p-AMPK were determined. L-Arginine promoted cell proliferation and reduced apoptosis after heat exposure at an optimal concentration of 5 mmol. Transcriptome sequencing analysis revealed that differentially expressed genes associated with the HSP family and TJs were elevated by L-arginine. According to KEGG pathway analysis, L-arginine activated the AMPK signaling pathway. In vivo, intestinal damage resulted in obvious morphological changes as well as apoptosis with TUNEL and caspase-3 staining under HS and dorsomorphin treatments. Furthermore, HS and dorsomorphin increased the serum D-lactate concentration, diamine oxidase activity, and mRNA expression level of MLCK (P < 0.05). In contrast, L-arginine and AICAR treatments reduced intestinal injury, maintained intestinal permeability, and increased the villus/crypt ratio under hyperthermia. L-Arginine had the same effect as AICAR both in vitro and in vivo, namely increasing p-AMPK protein expression. L-Arginine and AICAR also upregulated the mRNA expression level of HSP70 and HSP90, and downregulated mRNA expression of MLCK (P < 0.05). The protein expression levels of TJ proteins ZO-1 and claudin-1 were suppressed by heat stroke and dorsomorphin, but enhanced by L-arginine and AICAR. Our findings indicate that activation of AMPK signaling by L-arginine is associated with improved intestinal mucosal barrier functions by enhancing the expression of TJs in rat small intestines and IEC-6 cells during HS.
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Byrne CA, Lumsden JM, Lang HM, O'Sullivan CB. Synovial sepsis of unknown origin in the adult Thoroughbred racehorse. Equine Vet J 2019; 52:91-97. [PMID: 31006125 DOI: 10.1111/evj.13127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 04/11/2019] [Indexed: 11/30/2022]
Abstract
BACKGROUND Synovial sepsis of unknown origin is a rare cause of lameness in the adult horse, and a haematogenous pathogenesis has been proposed in previous cases. OBJECTIVES To describe the features and outcome of synovial sepsis of unknown origin in adult Thoroughbred racehorses. STUDY DESIGN Retrospective case series. METHODS Hospital records for admissions between 2005 and 2015 were reviewed to identify adult horses diagnosed with synovial sepsis of unknown origin. Presentation, clinicopathological, microbiological and diagnostic imaging findings were recorded. Treatment methods, surgical findings, complications and long-term outcome were evaluated. RESULTS Eleven cases were identified over the study period. Diagnosis was established from clinical examination and clinicopathologic findings, which were comparable to other aetiologies of synovial sepsis. Affected structures included synovial joints, tendon sheaths and bursae. Concurrent osteochondritis dissecans or articular cartilage lesions were evident during arthroscopic surgery in three cases. Significant intrasynovial haemorrhage was not identified. Microbial culture of synovial fluid or synovial biopsy was positive in 6/11 of cases, with all isolates being Gram-positive cocci. Of the 6 positive microbial cultures, all isolates demonstrated in vitro sensitivity to a cephalosporin antimicrobial agent. A concurrent remote wound was present in a single case. No other potential origins of bacteraemia were identified. Treatment methods included endoscopic surgery, standing multineedle lavage, intravenous regional limb perfusion, intrasynovial medication and/or systemic antimicrobial administration. All horses survived to hospital discharge. For the 6/11 cases that raced following synovial sepsis, the median period for return to racing was 221 days. MAIN LIMITATIONS A small study population, which was retrospectively reviewed. CONCLUSIONS Synovial sepsis of unknown origin is rare in the adult Thoroughbred racehorse and can affect a range of synovial structures. A concurrent potential source of bacteraemia is rarely identified. With appropriate management, the prognosis to return to racing is fair.
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Affiliation(s)
- C A Byrne
- Randwick Equine Centre, Randwick, Sydney, New South Wales, Australia
| | - J M Lumsden
- Randwick Equine Centre, Randwick, Sydney, New South Wales, Australia
| | - H M Lang
- Randwick Equine Centre, Randwick, Sydney, New South Wales, Australia
| | - C B O'Sullivan
- Randwick Equine Centre, Randwick, Sydney, New South Wales, Australia
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Arginine supplementation reduces colonic injury, inflammation and oxidative stress of DSS-induced colitis in mice. J Funct Foods 2019. [DOI: 10.1016/j.jff.2018.11.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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Varasteh S, Braber S, Kraneveld AD, Garssen J, Fink-Gremmels J. l-Arginine supplementation prevents intestinal epithelial barrier breakdown under heat stress conditions by promoting nitric oxide synthesis. Nutr Res 2018; 57:45-55. [DOI: 10.1016/j.nutres.2018.05.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 05/03/2018] [Accepted: 05/31/2018] [Indexed: 01/01/2023]
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Zhang B, Lv Z, Li Z, Wang W, Li G, Guo Y. Dietary l-arginine Supplementation Alleviates the Intestinal Injury and Modulates the Gut Microbiota in Broiler Chickens Challenged by Clostridium perfringens. Front Microbiol 2018; 9:1716. [PMID: 30108569 PMCID: PMC6080643 DOI: 10.3389/fmicb.2018.01716] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 07/10/2018] [Indexed: 12/19/2022] Open
Abstract
Our previous reports suggested that Dietary l-arginine supplementation attenuated gut injury of broiler chickens infected with Clostridium perfringens by enhancing intestinal immune responses, absorption and barrier function, but its effect on the gut microbiome of broiler chickens remains unclear. This experiment aimed at evaluating the effects of Dietary l-arginine supplementation on the gut bacterial community composition and function of broiler chickens challenged with C. perfringens. In total, 105 1-day-old male Arbor Acres broiler chickens were assigned to three groups: Control (CTL), C. perfringens-challenged (CP), and C. perfringens-challenged and fed diet supplemented with 0.3% l-arginine (ARGCP) groups. The challenge led to macroscopic and histomorphological gut lesions, decreased villus height and increased the number of Observed species, Shannon, Chao1 and ACE indices of ileal microbiota, whereas l-arginine addition reversed these changes. Moreover, the three treatments harbored distinct microbial communities (ANOSIM, P < 0.05). At the genus level, 24 taxa (e.g., Nitrosomonas spp., Coxiella spp., Ruegeria spp., and Thauera spp.) were significantly more abundant in CP group than in CTL group (P < 0.05), whereas the levels of 23 genera of them were significantly decreased by l-arginine supplementation (P < 0.05). The abundances of only 3 genera were different between CTL and ARGCP groups (P < 0.05). At the species level, the challenge promoted the relative abundance of Nitrospira sp. enrichment culture clone M1-9, Bradyrhizobium elkanii, Nitrospira bacterium SG8-3, and Pseudomonas veronii, which was reversed by l-arginine supplementation (P < 0.05). Furthermore, the challenge decreased the levels of Lactobacillus gasseri (P < 0.05). Predictive functional profiling of microbial communities by PICRUSt showed that compared with CP group, ARGCP group had enriched pathways relating to membrane transport, replication and repair, translation and nucleotide metabolism and suppressed functions corresponding to amino acid and lipid metabolisms (P < 0.05). The relative abundances of KEGG pathways in l-arginine-fed broilers were almost equal to those of the controls. In conclusion, l-arginine alleviated the gut injury and normalized the ileal microbiota of C. perfringens-challenged chickens to resemble that of unchallenged controls in terms of microbial composition and functionality.
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Affiliation(s)
- Beibei Zhang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Zengpeng Lv
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Zhui Li
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Weiwei Wang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Guang Li
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Yuming Guo
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
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Pires W, Veneroso CE, Wanner SP, Pacheco DAS, Vaz GC, Amorim FT, Tonoli C, Soares DD, Coimbra CC. Association Between Exercise-Induced Hyperthermia and Intestinal Permeability: A Systematic Review. Sports Med 2018; 47:1389-1403. [PMID: 27943148 DOI: 10.1007/s40279-016-0654-2] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
BACKGROUND Prolonged and strenuous physical exercise increases intestinal permeability, allowing luminal endotoxins to translocate through the intestinal barrier and reach the bloodstream. When recognized by the immune system, these endotoxins trigger a systemic inflammatory response that may affect physical performance and, in severe cases, induce heat stroke. However, it remains to be elucidated whether there is a relationship between the magnitude of exercise-induced hyperthermia and changes in intestinal permeability. OBJECTIVE In this systematic review, we evaluated whether an exercise-induced increase in core body temperature (T Core) is associated with an exercise-induced increase in intestinal permeability. METHODS The present systematic review screened the MEDLINE/PubMed and Web of Science databases in September 2016, without any date restrictions. Sixteen studies that were performed in healthy participants, presented original data, and measured both the exercise-induced changes in T Core and intestinal permeability were selected. These studies assessed intestinal permeability through the measurement of sugar levels in the urine and measurement of intestinal fatty acid binding protein or lipopolysaccharide levels in the blood. RESULTS Exercise increased both T Core and intestinal permeability in most of the 16 studies. In addition, a positive and strong correlation was observed between the two parameters (r = 0.793; p < 0.001), and a T Core exceeding 39 °C was always associated with augmented permeability. CONCLUSION The magnitude of exercise-induced hyperthermia is directly associated with the increase in intestinal permeability.
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Affiliation(s)
- Washington Pires
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, 6627 Avenida Antônio Carlos, Belo Horizonte, Minas Gerais, 31270-901, Brazil.,Department of Physical Education, Institute of Life Sciences, Universidade Federal de Juiz de Fora, Governador Valadares, Minas Gerais, Brazil
| | - Christiano E Veneroso
- Graduate Program in Sport Sciences, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Samuel P Wanner
- Graduate Program in Sport Sciences, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Diogo A S Pacheco
- Graduate Program in Sport Sciences, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Gisele C Vaz
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, 6627 Avenida Antônio Carlos, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Fabiano T Amorim
- Department of Physical Education, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, Minas Gerais, Brazil.,Department of Health, Exercise Science and Sport, University of New Mexico, Albuquerque, New Mexico, USA
| | - Cajsa Tonoli
- Department of Human Physiology and Sports Medicine, Faculty of Physical Education and Physical Therapy, Vrije Universiteit Brussel, Brussels, Belgium
| | - Danusa D Soares
- Graduate Program in Sport Sciences, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Cândido C Coimbra
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, 6627 Avenida Antônio Carlos, Belo Horizonte, Minas Gerais, 31270-901, Brazil. .,Graduate Program in Sport Sciences, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
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Theanine supplementation prevents liver injury and heat shock response by normalizing hypothalamic-pituitaryadrenal axis hyperactivity in mice subjected to whole body heat stress. J Funct Foods 2018. [DOI: 10.1016/j.jff.2018.04.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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Costa MC, Mata LM, Ribeiro NDQ, Santos APN, Oliveira LVN, Vilela RVR, Cardoso VN, Fernandes SOA, Santos DA. A new method for studying cryptococcosis in a murine model using 99mTc-Cryptococcus gattii. Med Mycol 2018; 56:479-484. [PMID: 28992125 DOI: 10.1093/mmy/myx060] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 07/13/2017] [Indexed: 11/12/2022] Open
Abstract
Cryptococcus gattii is one of the etiologic agents of cryptococcosis, a systemic mycosis that occurs in healthy and immunosuppressed humans and animals worldwide. Primary pulmonary infection caused by C. gattii is usually followed by fungal dissemination to the central nervous system, resulting in high mortality rates. In this context, animal models of cryptococcosis are useful in the study of fungal pathogenesis and host response against the pathogen, and for testing novel therapeutic options. The most frequently applied method to study fungal dissemination from the lungs to other organs is by culturing tissues, which is not accurate for the detection and quantification of fungal load at early stages of the infection. To overcome this problem, the purpose of this study was to develop a new method for the quantification of Cryptococcus dissemination. One C. gattii strain was efficiently radiolabeled with technetium-99m (99mTc), without affecting viability of the cells. Further, the 99mTc-C. gattii (111 MBq) strain was used to infect mice by intratracheal and intravenous route for biodistribution studies. 99mTc-C. gattii was successfully used in detection of the yeast in the brain of mice 6 hours postinoculation, while the detection using colony forming units was possible only 24 hours postinfection. Our results provided an alternative method that could be applied in further investigations regarding the efficacy of antifungals, fungal virulence, and host-pathogen interactions.
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Affiliation(s)
| | - Lays Murta Mata
- Laboratório de Radioisótopos, Departamento de Análises Clinicas e Toxicológicas, Faculdade de Farmácia-UFMG
| | | | | | | | - Raquel Virgínia Rocha Vilela
- Laboratório de Microbiologia Clínica, Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia - UFMG
| | - Valbert Nascimento Cardoso
- Laboratório de Radioisótopos, Departamento de Análises Clinicas e Toxicológicas, Faculdade de Farmácia-UFMG
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Interactions of Gut Microbiota, Endotoxemia, Immune Function, and Diet in Exertional Heatstroke. JOURNAL OF SPORTS MEDICINE 2018; 2018:5724575. [PMID: 29850597 PMCID: PMC5926483 DOI: 10.1155/2018/5724575] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 01/03/2018] [Indexed: 12/14/2022]
Abstract
Exertional heatstroke (EHS) is a medical emergency that cannot be predicted, requires immediate whole-body cooling to reduce elevated internal body temperature, and is influenced by numerous host and environmental factors. Widely accepted predisposing factors (PDF) include prolonged or intense exercise, lack of heat acclimatization, sleep deprivation, dehydration, diet, alcohol abuse, drug use, chronic inflammation, febrile illness, older age, and nonsteroidal anti-inflammatory drug use. The present review links these factors to the human intestinal microbiota (IM) and diet, which previously have not been appreciated as PDF. This review also describes plausible mechanisms by which these PDF lead to EHS: endotoxemia resulting from elevated plasma lipopolysaccharide (i.e., a structural component of the outer membrane of Gram-negative bacteria) and tissue injury from oxygen free radicals. We propose that recognizing the lifestyle and host factors which are influenced by intestine-microbial interactions, and modifying habitual dietary patterns to alter the IM ecosystem, will encourage efficient immune function, optimize the intestinal epithelial barrier, and reduce EHS morbidity and mortality.
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Abstract
PURPOSE Immunonutrition has been used to prevent the complications after colorectal elective surgery. This systematic review aimed to analyze and assess the effect of immunonutrition on colorectal cancer patients who received elective surgery. METHODS Three electronic databases (Medline, Embase, Cochrane) were used to search the latent studies which investigated the effects of enteral immunonutrition (EIN) compared with standard enteral nutrition (EN) or parenteral immunonutrition (PIN) compared with standard parenteral nutrition (PN) on colorectal cancer patients who are undergoing surgery until 21st of April, 2017. Meta-analysis was conducted to calculate odd risk (OR), mean difference (MD), or standard mean difference (SMD) with 95% confidence interval (CI), and heterogeneity was tested by Q test. RESULTS Nine publications were included. The meta-analysis results presented that EIN improved the length of hospital stay (pooled MD, 2.53; 95% CI, 1.29-3.41), infectious complications (pooled OR, 0.33; 95% CI, 0.21-0.53) which contains the Surgical Site Infections (pooled OR, 0.25; 95% CI, 0.22-0.58) and Superficial/Deep incisional infections (pooled OR, 0.27; 95% CI, 0.12-0.64); meanwhile, PIN improved the length of hospital stay (pooled MD, 2.66; 95% CI, 0.62-4.76), IL-6 (pooled MD, - 6.09; 95% CI, - 10.11 to - 2.07), CD3 (pooled MD, 7.50; 95% CI, 3.57-11.43), CD4 (pooled MD, 5.47; 95% CI, 2.54-8.40), and CD4/CD8 (pooled MD, 0.50; 95% CI, 0.22-0.78); the level of CD8 was lower (pooled MD, - 4.32; 95% CI, - 7.09 to - 1.55) in PIN. CONCLUSION Immunonutrition could be an effective approach to enhance the immune function of colorectal cancer patients undergoing elective surgery and to improve the clinical and laboratory outcomes.
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Menni C, Zierer J, Pallister T, Jackson MA, Long T, Mohney RP, Steves CJ, Spector TD, Valdes AM. Omega-3 fatty acids correlate with gut microbiome diversity and production of N-carbamylglutamate in middle aged and elderly women. Sci Rep 2017; 7:11079. [PMID: 28894110 PMCID: PMC5593975 DOI: 10.1038/s41598-017-10382-2] [Citation(s) in RCA: 145] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 08/07/2017] [Indexed: 12/30/2022] Open
Abstract
Omega-3 fatty acids may influence human physiological parameters in part by affecting the gut microbiome. The aim of this study was to investigate the links between omega-3 fatty acids, gut microbiome diversity and composition and faecal metabolomic profiles in middle aged and elderly women. We analysed data from 876 twins with 16S microbiome data and DHA, total omega-3, and other circulating fatty acids. Estimated food intake of omega-3 fatty acids were obtained from food frequency questionnaires. Both total omega-3and DHA serum levels were significantly correlated with microbiome alpha diversity (Shannon index) after adjusting for confounders (DHA Beta(SE) = 0.13(0.04), P = 0.0006 total omega-3: 0.13(0.04), P = 0.001). These associations remained significant after adjusting for dietary fibre intake. We found even stronger associations between DHA and 38 operational taxonomic units (OTUs), the strongest ones being with OTUs from the Lachnospiraceae family (Beta(SE) = 0.13(0.03), P = 8 × 10-7). Some of the associations with gut bacterial OTUs appear to be mediated by the abundance of the faecal metabolite N-carbamylglutamate. Our data indicate a link between omega-3 circulating levels/intake and microbiome composition independent of dietary fibre intake, particularly with bacteria of the Lachnospiraceae family. These data suggest the potential use of omega-3 supplementation to improve the microbiome composition.
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Affiliation(s)
- Cristina Menni
- Department of Twin Research, King's College London, London, UK
| | - Jonas Zierer
- Department of Twin Research, King's College London, London, UK.,Institute of Bioinformatics and Systems Biology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Tess Pallister
- Department of Twin Research, King's College London, London, UK
| | | | - Tao Long
- Sanford Burnham Prebys, La Jolla, USA
| | | | - Claire J Steves
- Department of Twin Research, King's College London, London, UK
| | - Tim D Spector
- Department of Twin Research, King's College London, London, UK
| | - Ana M Valdes
- Department of Twin Research, King's College London, London, UK. .,School of Medicine, Nottingham City Hospital, Hucknall Road, Nottingham, UK. .,NIHR Nottingham Biomedical Research Centre, Nottingham, UK.
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Nascimento BB, Cartelle CT, Noviello MDL, Pinheiro BV, de Almeida Vitor RW, Souza DDG, de Vasconcelos Generoso S, Cardoso VN, Martins FDS, Nicoli JR, Arantes RME. Influence of indigenous microbiota on experimental toxoplasmosis in conventional and germ-free mice. Int J Exp Pathol 2017; 98:191-202. [PMID: 28895246 DOI: 10.1111/iep.12236] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 06/04/2017] [Indexed: 01/12/2023] Open
Abstract
Toxoplasmosis represents one of the most common zoonoses worldwide. Its agent, Toxoplasma gondii, causes a severe innate pro-inflammatory response. The indigenous intestinal microbiota promotes host animal homoeostasis and may protect the host against pathogens. Germ-free (GF) animals provide an important tool for the study of interactions between host and microbiota. In this study, we assessed the role of indigenous microorganisms in disease development utilizing a murine toxoplasmosis model, which includes conventional (CV) and GF NIH Swiss mice. CV and GF mice orally inoculated with T. gondii had similar survival curves. However, disease developed differently in the two animal groups. In CV mice, intestinal permeability increased and levels of intestinal pro-inflammatory cytokines were altered. In GF animals, there were discrete epithelial degenerative changes and mucosal oedema, but the liver and lungs displayed significant lesions. We conclude that, despite similar survival curves, CV animals succumb to an exaggerated inflammatory response, whereas GF mice fail to produce an adequate systemic response.
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Affiliation(s)
- Bruna B Nascimento
- Departamento de Patologia Geral, Laboratório de Neuro-Imunopatologia Experimental (NIPE), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Christiane T Cartelle
- Departamento de Patologia Geral, Laboratório de Neuro-Imunopatologia Experimental (NIPE), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Maria de L Noviello
- Departamento de Patologia Geral, Laboratório de Neuro-Imunopatologia Experimental (NIPE), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Breno V Pinheiro
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Ricardo W de Almeida Vitor
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Danielle da G Souza
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Simone de Vasconcelos Generoso
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Valbert N Cardoso
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Flaviano Dos S Martins
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Jacques R Nicoli
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Rosa M E Arantes
- Departamento de Patologia Geral, Laboratório de Neuro-Imunopatologia Experimental (NIPE), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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Oral arginine supplementation protects female mice from the onset of non-alcoholic steatohepatitis. Amino Acids 2017; 49:1215-1225. [PMID: 28434046 PMCID: PMC5487836 DOI: 10.1007/s00726-017-2423-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 04/13/2017] [Indexed: 02/06/2023]
Abstract
Dietary arginine (Arg) supplementation has been proposed to have positive effects on the development of liver diseases. In the present study, we investigate if an oral Arg supplementation in diet protects mice fed a fructose, fat and cholesterol enriched Western-style diet (WSD) from the development of non-alcoholic steatohepatitis (NASH). Female C57BL/6J mice were fed a liquid control diet or a liquid WSD ± Arg (2.49 g/kg body weight/day) for 6 weeks. Indices of liver injury, glucose metabolism and intestinal permeability were determined. While Arg supplementation had no effects on body weight gain, fasting blood glucose levels were significantly lower in WSD+Arg-fed mice than in C+Arg-fed animals. WSD-fed mice developed liver steatosis accompanied with inflammation, both being significantly attenuated in WSD+Arg-fed mice. These effects of Arg supplementation went along with a protection against WSD-induced decreased tight junction protein levels in the upper parts of the small intestine, increased levels of bacterial endotoxin in portal plasma as well as increased hepatic toll-like receptor-4 mRNA and 4-hydroxynonenal protein adduct levels. In conclusion, Arg supplementation may protect mice from the development of NASH.
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Krentz T, Allen S. Bacterial translocation in critical illness. J Small Anim Pract 2017; 58:191-198. [PMID: 28186322 DOI: 10.1111/jsap.12626] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 10/18/2016] [Accepted: 11/08/2016] [Indexed: 12/19/2022]
Abstract
Bacterial translocation involves the passage of intestinal bacteria to extraintestinal sites and has been shown to increase morbidity and mortality in critical illness. This review outlines the pathophysiology of bacterial translocation, host defence mechanisms, and reviews the evidence for the clinical management of critically ill patients in order to minimise the negative outcomes associated with bacterial translocation.
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Affiliation(s)
- T Krentz
- Department of Emergency and Critical Care, Massachusetts Veterinary Referral Hospital, Woburn, MA, 01801, USA
| | - S Allen
- Department of Emergency and Critical Care, Massachusetts Veterinary Referral Hospital, Woburn, MA, 01801, USA
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Clark A, Mach N. Exercise-induced stress behavior, gut-microbiota-brain axis and diet: a systematic review for athletes. J Int Soc Sports Nutr 2016; 13:43. [PMID: 27924137 PMCID: PMC5121944 DOI: 10.1186/s12970-016-0155-6] [Citation(s) in RCA: 280] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 11/19/2016] [Indexed: 12/14/2022] Open
Abstract
Fatigue, mood disturbances, under performance and gastrointestinal distress are common among athletes during training and competition. The psychosocial and physical demands during intense exercise can initiate a stress response activating the sympathetic-adrenomedullary and hypothalamus-pituitary-adrenal (HPA) axes, resulting in the release of stress and catabolic hormones, inflammatory cytokines and microbial molecules. The gut is home to trillions of microorganisms that have fundamental roles in many aspects of human biology, including metabolism, endocrine, neuronal and immune function. The gut microbiome and its influence on host behavior, intestinal barrier and immune function are believed to be a critical aspect of the brain-gut axis. Recent evidence in murine models shows that there is a high correlation between physical and emotional stress during exercise and changes in gastrointestinal microbiota composition. For instance, induced exercise-stress decreased cecal levels of Turicibacter spp and increased Ruminococcus gnavus, which have well defined roles in intestinal mucus degradation and immune function. Diet is known to dramatically modulate the composition of the gut microbiota. Due to the considerable complexity of stress responses in elite athletes (from leaky gut to increased catabolism and depression), defining standard diet regimes is difficult. However, some preliminary experimental data obtained from studies using probiotics and prebiotics studies show some interesting results, indicating that the microbiota acts like an endocrine organ (e.g. secreting serotonin, dopamine or other neurotransmitters) and may control the HPA axis in athletes. What is troubling is that dietary recommendations for elite athletes are primarily based on a low consumption of plant polysaccharides, which is associated with reduced microbiota diversity and functionality (e.g. less synthesis of byproducts such as short chain fatty acids and neurotransmitters). As more elite athletes suffer from psychological and gastrointestinal conditions that can be linked to the gut, targeting the microbiota therapeutically may need to be incorporated in athletes’ diets that take into consideration dietary fiber as well as microbial taxa not currently present in athlete’s gut.
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Affiliation(s)
- Allison Clark
- Health Science Department, Open University of Catalonia (UOC), 08035 Barcelona, Spain
| | - Núria Mach
- Health Science Department, Open University of Catalonia (UOC), 08035 Barcelona, Spain ; Animal Genetics and Integrative Biology unit (GABI), INRA, AgroParis Tech, Université Paris-Saclay, 78352, Jouy-en-Josas, France
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Andrade MER, Santos RDGCD, Soares ADN, Costa KA, Fernandes SOA, de Souza CM, Cassali GD, de Souza AL, Faria AMC, Cardoso VN. Pretreatment and Treatment WithL-Arginine Attenuate Weight Loss and Bacterial Translocation in Dextran Sulfate Sodium Colitis. JPEN J Parenter Enteral Nutr 2016; 40:1131-1139. [DOI: 10.1177/0148607115581374] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Accepted: 03/17/2015] [Indexed: 12/11/2022]
Affiliation(s)
| | | | | | | | | | | | | | - Adna Luciana de Souza
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Ana Maria Caetano Faria
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
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Zhang Y, Gu F, Wang F, Zhang Y. Effects of early enteral nutrition on the gastrointestinal motility and intestinal mucosal barrier of patients with burn-induced invasive fungal infection. Pak J Med Sci 2016; 32:599-603. [PMID: 27375697 PMCID: PMC4928406 DOI: 10.12669/pjms.323.9717] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To evaluate the effects of early enteral nutrition on the gastrointestinal motility and intestinal mucosal barrier of patients with burn-induced invasive fungal infection. METHODS A total of 120 patients with burn-induced invasive fungal infection were randomly divided into an early enteral nutrition (EN) group and a parenteral nutrition (PN) group (n=60). The patients were given nutritional support intervention for 14 days, and the expression levels of serum transferrin, albumin, total protein, endotoxin, D-lactic acid and inflammatory cytokines were detected on the 1st, 7th and 14th days respectively. RESULTS As the treatment progressed, the levels of serum transferrin, albumin and total protein of the EN group were significantly higher than those of the PN group (P<0.05), while the levels of serum endotoxin and D-lactic acid of the form group were significantly lower (P<0.05). After treatment, the expression levels of IL-6 and TNF-α were decreased in the EN group, which were significantly different from those of the PN group (P<0.05). During treatment, the incidence rates of complications such as abdominal distension, diarrhea, sepsis, nausea, vomiting and gastric retention were similar. The mean healing time of wound surface was 9.34±0.78 days in the EN group and 12.46±2.19 days in the PN group, i.e. such time of the former was significantly shorter than that of the latter (P<0.05). CONCLUSION Treating patients having burn-induced invasive fungal infection by early enteral nutrition support with arginine can safely alleviate malnutrition and stress reaction, strengthen cellular immune function and promote wound healing, thereby facilitating the recovery of gastrointestinal motility and the function of intestinal mucosal barrier.
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Affiliation(s)
- Yu Zhang
- Yu Zhang, Baoding Children's Hospital, Baoding 071000, Hebei Province, China
| | - Fang Gu
- Fang Gu, Baoding Children's Hospital, Baoding 071000, Hebei Province, China
| | - Fengxian Wang
- Fengxian Wang, Baoding Children's Hospital, Baoding 071000, Hebei Province, China
| | - Yuanda Zhang
- Yuanda Zhang, Baoding Children's Hospital, Baoding 071000, Hebei Province, China
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Hudson ASR, Kunstetter AC, Damasceno WC, Wanner SP. Involvement of the TRPV1 channel in the modulation of spontaneous locomotor activity, physical performance and physical exercise-induced physiological responses. ACTA ACUST UNITED AC 2016; 49:e5183. [PMID: 27191606 PMCID: PMC4869825 DOI: 10.1590/1414-431x20165183] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 02/24/2016] [Indexed: 12/11/2022]
Abstract
Physical exercise triggers coordinated physiological responses to meet the augmented
metabolic demand of contracting muscles. To provide adequate responses, the brain
must receive sensory information about the physiological status of peripheral tissues
and organs, such as changes in osmolality, temperature and pH. Most of the receptors
involved in these afferent pathways express ion channels, including transient
receptor potential (TRP) channels, which are usually activated by more than one type
of stimulus and are therefore considered polymodal receptors. Among these TRP
channels, the TRPV1 channel (transient receptor potential vanilloid type 1 or
capsaicin receptor) has well-documented functions in the modulation of pain sensation
and thermoregulatory responses. However, the TRPV1 channel is also expressed in
non-neural tissues, suggesting that this channel may perform a broad range of
functions. In this review, we first present a brief overview of the available tools
for studying the physiological roles of the TRPV1 channel. Then, we present the
relationship between the TRPV1 channel and spontaneous locomotor activity, physical
performance, and modulation of several physiological responses, including water and
electrolyte balance, muscle hypertrophy, and metabolic, cardiovascular,
gastrointestinal, and inflammatory responses. Altogether, the data presented herein
indicate that the TPRV1 channel modulates many physiological functions other than
nociception and thermoregulation. In addition, these data open new possibilities for
investigating the role of this channel in the acute effects induced by a single bout
of physical exercise and in the chronic effects induced by physical training.
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Affiliation(s)
- A S R Hudson
- Escola de Educação Física, Fisioterapia e Terapia Ocupacional, Laboratório de Fisiologia do Exercício, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - A C Kunstetter
- Escola de Educação Física, Fisioterapia e Terapia Ocupacional, Laboratório de Fisiologia do Exercício, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - W C Damasceno
- Escola de Educação Física, Fisioterapia e Terapia Ocupacional, Laboratório de Fisiologia do Exercício, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - S P Wanner
- Escola de Educação Física, Fisioterapia e Terapia Ocupacional, Laboratório de Fisiologia do Exercício, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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Oriá RB, Murray-Kolb LE, Scharf RJ, Pendergast LL, Lang DR, Kolling GL, Guerrant RL. Early-life enteric infections: relation between chronic systemic inflammation and poor cognition in children. Nutr Rev 2016; 74:374-86. [PMID: 27142301 DOI: 10.1093/nutrit/nuw008] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The intestinal microbiota undergoes active remodeling in the first 6 to 18 months of life, during which time the characteristics of the adult microbiota are developed. This process is strongly influenced by the early diet and enteric pathogens. Enteric infections and malnutrition early in life may favor microbiota dysbiosis and small intestinal bacterial overgrowth, resulting in intestinal barrier dysfunction and translocation of intestinal bacterial products, ultimately leading to low-grade, chronic, subclinical systemic inflammation. The leaky gut-derived low-grade systemic inflammation may have profound consequences on the gut-liver-brain axis, compromising normal growth, metabolism, and cognitive development. This review examines recent data suggesting that early-life enteric infections that lead to intestinal barrier disruption may shift the intestinal microbiota toward chronic systemic inflammation and subsequent impaired cognitive development.
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Affiliation(s)
- Reinaldo B Oriá
- R.B. Oriá is with the Laboratory of Tissue Healing, Ontogeny and Nutrition, Institute of Biomedicine and Department of Morphology, Faculty of Medicine, Federal University of Ceará, Ceará, Fortaleza, Brazil. L.E. Murray-Kolb is with The Pennsylvania State University, University Park, Pennsylvania, USA. R.J. Scharf, G. Kolling, and R.L. Guerrant are with the Center for Global Health, Division of Infectious Diseases and International Health, Department of Medicine, University of Virginia, Charlottesville, Virginia, USA. L.L. Pendergast is with the School Psychology Program, Temple University, Philadelphia, Pennsylvania, USA. D.R. Lang is with the Foundation for the National Institutes of Health, Bethesda, Maryland, USA.
| | - Laura E Murray-Kolb
- R.B. Oriá is with the Laboratory of Tissue Healing, Ontogeny and Nutrition, Institute of Biomedicine and Department of Morphology, Faculty of Medicine, Federal University of Ceará, Ceará, Fortaleza, Brazil. L.E. Murray-Kolb is with The Pennsylvania State University, University Park, Pennsylvania, USA. R.J. Scharf, G. Kolling, and R.L. Guerrant are with the Center for Global Health, Division of Infectious Diseases and International Health, Department of Medicine, University of Virginia, Charlottesville, Virginia, USA. L.L. Pendergast is with the School Psychology Program, Temple University, Philadelphia, Pennsylvania, USA. D.R. Lang is with the Foundation for the National Institutes of Health, Bethesda, Maryland, USA
| | - Rebecca J Scharf
- R.B. Oriá is with the Laboratory of Tissue Healing, Ontogeny and Nutrition, Institute of Biomedicine and Department of Morphology, Faculty of Medicine, Federal University of Ceará, Ceará, Fortaleza, Brazil. L.E. Murray-Kolb is with The Pennsylvania State University, University Park, Pennsylvania, USA. R.J. Scharf, G. Kolling, and R.L. Guerrant are with the Center for Global Health, Division of Infectious Diseases and International Health, Department of Medicine, University of Virginia, Charlottesville, Virginia, USA. L.L. Pendergast is with the School Psychology Program, Temple University, Philadelphia, Pennsylvania, USA. D.R. Lang is with the Foundation for the National Institutes of Health, Bethesda, Maryland, USA
| | - Laura L Pendergast
- R.B. Oriá is with the Laboratory of Tissue Healing, Ontogeny and Nutrition, Institute of Biomedicine and Department of Morphology, Faculty of Medicine, Federal University of Ceará, Ceará, Fortaleza, Brazil. L.E. Murray-Kolb is with The Pennsylvania State University, University Park, Pennsylvania, USA. R.J. Scharf, G. Kolling, and R.L. Guerrant are with the Center for Global Health, Division of Infectious Diseases and International Health, Department of Medicine, University of Virginia, Charlottesville, Virginia, USA. L.L. Pendergast is with the School Psychology Program, Temple University, Philadelphia, Pennsylvania, USA. D.R. Lang is with the Foundation for the National Institutes of Health, Bethesda, Maryland, USA
| | - Dennis R Lang
- R.B. Oriá is with the Laboratory of Tissue Healing, Ontogeny and Nutrition, Institute of Biomedicine and Department of Morphology, Faculty of Medicine, Federal University of Ceará, Ceará, Fortaleza, Brazil. L.E. Murray-Kolb is with The Pennsylvania State University, University Park, Pennsylvania, USA. R.J. Scharf, G. Kolling, and R.L. Guerrant are with the Center for Global Health, Division of Infectious Diseases and International Health, Department of Medicine, University of Virginia, Charlottesville, Virginia, USA. L.L. Pendergast is with the School Psychology Program, Temple University, Philadelphia, Pennsylvania, USA. D.R. Lang is with the Foundation for the National Institutes of Health, Bethesda, Maryland, USA
| | - Glynis L Kolling
- R.B. Oriá is with the Laboratory of Tissue Healing, Ontogeny and Nutrition, Institute of Biomedicine and Department of Morphology, Faculty of Medicine, Federal University of Ceará, Ceará, Fortaleza, Brazil. L.E. Murray-Kolb is with The Pennsylvania State University, University Park, Pennsylvania, USA. R.J. Scharf, G. Kolling, and R.L. Guerrant are with the Center for Global Health, Division of Infectious Diseases and International Health, Department of Medicine, University of Virginia, Charlottesville, Virginia, USA. L.L. Pendergast is with the School Psychology Program, Temple University, Philadelphia, Pennsylvania, USA. D.R. Lang is with the Foundation for the National Institutes of Health, Bethesda, Maryland, USA
| | - Richard L Guerrant
- R.B. Oriá is with the Laboratory of Tissue Healing, Ontogeny and Nutrition, Institute of Biomedicine and Department of Morphology, Faculty of Medicine, Federal University of Ceará, Ceará, Fortaleza, Brazil. L.E. Murray-Kolb is with The Pennsylvania State University, University Park, Pennsylvania, USA. R.J. Scharf, G. Kolling, and R.L. Guerrant are with the Center for Global Health, Division of Infectious Diseases and International Health, Department of Medicine, University of Virginia, Charlottesville, Virginia, USA. L.L. Pendergast is with the School Psychology Program, Temple University, Philadelphia, Pennsylvania, USA. D.R. Lang is with the Foundation for the National Institutes of Health, Bethesda, Maryland, USA
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Vargas N, Marino F. Heat stress, gastrointestinal permeability and interleukin-6 signaling - Implications for exercise performance and fatigue. Temperature (Austin) 2016; 3:240-251. [PMID: 27857954 PMCID: PMC4964994 DOI: 10.1080/23328940.2016.1179380] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 04/12/2016] [Accepted: 04/13/2016] [Indexed: 02/07/2023] Open
Abstract
Exercise in heat stress exacerbates performance decrements compared to normothermic environments. It has been documented that the performance decrements are associated with reduced efferent drive from the central nervous system (CNS), however, specific factors that contribute to the decrements are not completely understood. During exertional heat stress, blood flow is preferentially distributed away from the intestinal area to supply the muscles and brain with oxygen. Consequently, the gastrointestinal barrier becomes increasingly permeable, resulting in the release of lipopolysaccharides (LPS, endotoxin) into the circulation. LPS leakage stimulates an acute-phase inflammatory response, including the release of interleukin (IL)-6 in response to an increasingly endotoxic environment. If LPS translocation is too great, heat shock, neurological dysfunction, or death may ensue. IL-6 acts initially in a pro-inflammatory manner during endotoxemia, but can attenuate the response through signaling the hypothalamic pituitary adrenal (HPA)-axis. Likewise, IL-6 is believed to be a thermoregulatory sensor in the gut during the febrile response, hence highlighting its role in periphery – to – brain communication. Recently, IL-6 has been implicated in signaling the CNS and influencing perceptions of fatigue and performance during exercise. Therefore, due to the cascade of events that occur during exertional heat stress, it is possible that the release of LPS and exacerbated response of IL-6 contributes to CNS modulation during exertional heat stress. The purpose of this review is to evaluate previous literature and discuss the potential role for IL-6 during exertional heat stress to modulate performance in favor of whole body preservation.
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Affiliation(s)
- Nicole Vargas
- School of Exercise Science, Sport & Health, Charles Sturt University , Bathurst, NSW, Australia
| | - Frank Marino
- School of Exercise Science, Sport & Health, Charles Sturt University , Bathurst, NSW, Australia
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