1
|
Duttagupta S, Krishna Roy N, Dey G. Efficacy of amino acids in sports nutrition- review of clinical evidences. Food Res Int 2024; 187:114311. [PMID: 38763626 DOI: 10.1016/j.foodres.2024.114311] [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: 12/28/2023] [Revised: 03/15/2024] [Accepted: 04/16/2024] [Indexed: 05/21/2024]
Abstract
The efficacy of amino acids as popular sports supplements has triggered debates, with their impact on athletic performance varying across sports disciplines due to diversity and heterogeneity in clinical trials. This review evaluates the ergogenic potential of amino acids, by critical appraisal of results of clinical trials of Branched chain amino acids (BCAAs), arginine, glutamine, citrulline, β-alanine, and taurine, performed on elite sportsmen from various land and water sports. Clinical trials reviewed here confirm notable physiological benefits thereby supporting the claim that BCAA, citrulline and arginine in various doses can have positive effects on endurance and overall performance in sportsperson. Furthermore, results of clinical trials and metabolomic studies indicate that in future it would be more beneficial to design precise formulations to target the requirement of specific sports. For instance, some combinations of amino acids may be more suitable for long term endurance and some others may be suitable for short burst of excessive energy. The most important insights from this review are the identification of three key areas where research is urgently needed: a) Biomarkers that can identify the physiological end points and to distinguish the specific role of amino acid as anti-fatigue or reducing muscle soreness or enhancing energy b) In-depth sports-wise clinical trials on elite sportsperson to understand the ergogenic needs for the particular sports c) Design of precision formula for similar types of sports instead of common supplements.
Collapse
Affiliation(s)
- Sreya Duttagupta
- School of Biotechnology, KIIT-Deemed to be University, Bhubaneswar 751024, India
| | - Niladri Krishna Roy
- School of Biotechnology, KIIT-Deemed to be University, Bhubaneswar 751024, India
| | - Gargi Dey
- School of Biotechnology, KIIT-Deemed to be University, Bhubaneswar 751024, India.
| |
Collapse
|
2
|
Escobar KA, VanDusseldorp TA, Johnson KE, Stratton M, McCormick JJ, Moriarity T, Dokladny K, Vaughan RA, Kerksick CM, Kravitz L, Mermier CM. The biphasic activity of autophagy and heat shock protein response in peripheral blood mononuclear cells following acute resistance exercise in resistance-trained males. Eur J Appl Physiol 2024:10.1007/s00421-024-05503-5. [PMID: 38771358 DOI: 10.1007/s00421-024-05503-5] [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: 01/09/2024] [Accepted: 04/25/2024] [Indexed: 05/22/2024]
Abstract
PURPOSE Autophagy and heat shock protein (HSP) response are proteostatic systems involved in the acute and adaptive responses to exercise. These systems may upregulate sequentially following cellular stress including acute exercise, however, currently few data exist in humans. This study investigated the autophagic and HSP responses to acute intense lower body resistance exercise in peripheral blood mononuclear cells (PBMCs) with and without branched-chain amino acids (BCAA) supplementation. METHODS Twenty resistance-trained males (22.3 ± 1.5 yr; 175.4 ± .7 cm; 86.4 ± 15.6 kg) performed a bout of intense lower body resistance exercise and markers of autophagy and HSP70 were measured immediately post- (IPE) and 2, 4, 24, 48, and 72 h post-exercise. Prior to resistance exercise, 10 subjects were randomly assigned to BCAA supplementation of 0.22 g/kg/d for 5 days pre-exercise and up to 72 h following exercise while the other 10 subjects consumed a placebo (PLCB). RESULTS There were no difference in autophagy markers or HSP70 expression between BCAA and PLCB groups. LC3II protein expression was significantly lower 2 and 4 h post-exercise compared to pre-exercise. LC3II: I ratio was not different at any time point compared to pre-exercise. Protein expression of p62 was lower IPE, 2, and 4 h post-exercise and elevated 24 h post-exercise. HSP70 expression was elevated 48 and 72 h post-exercise. CONCLUSIONS Autophagy and HSP70 are upregulated in PBMCs following intense resistance exercise with autophagy increasing initially post-exercise and HSP response in the latter period. Moreover, BCAA supplementation did not affect this response.
Collapse
Affiliation(s)
- Kurt A Escobar
- Physiology of Sport and Exercise Lab, Department of Kinesiology, California State University, Long Beach, Long Beach, CA, USA.
| | - Trisha A VanDusseldorp
- Bonafide Health, LLC p/b JDS Therapeutics, Harrison, NY, USA
- Department of Health and Exercise Sciences, Jacksonville University, Jacksonville, FL, USA
| | - Kelly E Johnson
- Department of Kinesiology, Coastal Carolina University, Conway, SC, USA
| | - Matthew Stratton
- Department of Health, Kinesiology, and Sport, University of South Alabama, Mobile, AL, USA
| | - James J McCormick
- Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, Canada
| | - Terence Moriarity
- Department of Kinesiology, University of Northern Iowa, Cedar Falls, USA
| | - Karol Dokladny
- Department of Internal Medicine, Health Sciences Center, University of New Mexico, Albuquerque, NM, USA
| | - Roger A Vaughan
- Department of Exercise Science, Congdon School of Health Sciences, High Point University, High Point, NC, USA
| | - Chad M Kerksick
- Exercise and Performance Nutrition Laboratory, College of Science, Technology, and Health, Lindenwood University, St. Charles, MO, USA
| | - Len Kravitz
- Department of Health, Exercise, and Sport Science, University of New Mexico, Albuquerque, NM, USA
| | - Christine M Mermier
- Department of Health, Exercise, and Sport Science, University of New Mexico, Albuquerque, NM, USA
| |
Collapse
|
3
|
Chen T, Pan F, Huang Q, Xie G, Chao X, Wu L, Wang J, Cui L, Sun T, Li M, Wang Y, Guan Y, Zheng X, Ren Z, Guo Y, Wang L, Zhou K, Zhao A, Guo Q, Xie F, Jia W. Metabolic phenotyping reveals an emerging role of ammonia abnormality in Alzheimer's disease. Nat Commun 2024; 15:3796. [PMID: 38714706 PMCID: PMC11076546 DOI: 10.1038/s41467-024-47897-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 04/16/2024] [Indexed: 05/10/2024] Open
Abstract
The metabolic implications in Alzheimer's disease (AD) remain poorly understood. Here, we conducted a metabolomics study on a moderately aging Chinese Han cohort (n = 1397; mean age 66 years). Conjugated bile acids, branch-chain amino acids (BCAAs), and glutamate-related features exhibited strong correlations with cognitive impairment, clinical stage, and brain amyloid-β deposition (n = 421). These features demonstrated synergistic performances across clinical stages and subpopulations and enhanced the differentiation of AD stages beyond demographics and Apolipoprotein E ε4 allele (APOE-ε4). We validated their performances in eight data sets (total n = 7685) obtained from Alzheimer's Disease Neuroimaging Initiative (ADNI) and Religious Orders Study and Memory and Aging Project (ROSMAP). Importantly, identified features are linked to blood ammonia homeostasis. We further confirmed the elevated ammonia level through AD development (n = 1060). Our findings highlight AD as a metabolic disease and emphasize the metabolite-mediated ammonia disturbance in AD and its potential as a signature and therapeutic target for AD.
Collapse
Affiliation(s)
- Tianlu Chen
- Center for Translational Medicine and Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Fengfeng Pan
- Department of Gerontology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Qi Huang
- Department of Nuclear Medicine & PET Center, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Guoxiang Xie
- Human Metabolomics Institute, Inc., Shenzhen, 518109, China
| | - Xiaowen Chao
- Center for Translational Medicine and Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Lirong Wu
- Center for Translational Medicine and Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Jie Wang
- Department of Nuclear Medicine & PET Center, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Liang Cui
- Department of Gerontology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Tao Sun
- Center for Translational Medicine and Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Mengci Li
- Center for Translational Medicine and Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Ying Wang
- Department of Gerontology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Yihui Guan
- Department of Nuclear Medicine & PET Center, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Xiaojiao Zheng
- Center for Translational Medicine and Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Zhenxing Ren
- Center for Translational Medicine and Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Yuhuai Guo
- Center for Translational Medicine and Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Lu Wang
- Department of Pharmacology and Pharmacy, University of Hong Kong, Hong Kong, 999077, China
| | - Kejun Zhou
- Human Metabolomics Institute, Inc., Shenzhen, 518109, China
| | - Aihua Zhao
- Center for Translational Medicine and Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China
| | - Qihao Guo
- Department of Gerontology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China.
| | - Fang Xie
- Department of Nuclear Medicine & PET Center, Huashan Hospital, Fudan University, Shanghai, 200040, China.
| | - Wei Jia
- Center for Translational Medicine and Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, China.
- Department of Pharmacology and Pharmacy, University of Hong Kong, Hong Kong, 999077, China.
| |
Collapse
|
4
|
Salem A, Trabelsi K, Jahrami H, AlRasheed MM, Boukhris O, Puce L, Bragazzi NL, Ammar A, Glenn JM, Chtourou H. Branched-Chain Amino Acids Supplementation and Post-Exercise Recovery: An Overview of Systematic Reviews. JOURNAL OF THE AMERICAN NUTRITION ASSOCIATION 2024; 43:384-396. [PMID: 38241335 DOI: 10.1080/27697061.2023.2297899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 12/17/2023] [Indexed: 01/21/2024]
Abstract
Objective: This overview of systematic reviews (OoSRs) aimed, firstly, to systematically review, summarize, and appraise the findings of published systematic reviews with or without meta-analyses that investigate the effects of branched-chain amino acids (BCAA) on post-exercise recovery of muscle damage biomarkers, muscle soreness, and muscle performance. The secondary objective was to re-analyze and standardize the results of meta-analyses using the random-effects Hartung-Knapp-Sidik-Jonkman (HKSJ) method.Methods: The methodological quality of the reviews was assessed using A Measurement Tool to Assess Systematic Reviews 2.We searched on five databases (i.e., PubMed, Web of Science, Scopus, SPORTDiscus, ProQuest) for systematic reviews with or without meta-analyses that investigated the effects of BCAA supplementation on the post-exercise recovery of muscle damage biomarkers, muscle soreness, and muscle performance.Results: Eleven systematic reviews (seven with meta-analyses) of individual studies were included. Evidence suggests BCAA ingestion attenuates creatine kinase (CK) levels (medium effects) and muscle soreness (small effects) immediately post-exercise and accelerates their recovery process, with trivial-to-large effects for CK levels and small-to-large effects for muscle soreness. BCAA supplementation has no effect on lactate dehydrogenase, myoglobin, and muscle performance recovery. The re-analyses with HKSJ method using the original data reported a slight change in results significance, concluding the same evidence as the original results. The major flaws found in the analyzed reviews were the absence of justification for excluding studies, and the lack of provision of sources of funding for primary studies and sources of conflict of interest and/or funding description.Conclusions: BCAA supplementation is an effective method to reduce post-exercise muscle damage biomarkers, particularly CK levels, and muscle soreness, with no effect on muscle performance. Future systematic reviews with/without meta-analyses, with greater methodological rigor, are needed.
Collapse
Affiliation(s)
- Atef Salem
- Higher Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia
- Physical Activity, Sport, and Health, UR18JS01, National Observatory of Sport, Tunis, Tunisia
| | - Khaled Trabelsi
- Higher Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia
- Research Laboratory: Education, Motricity, Sport and Health, EM2S, LR19JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia
| | - Haitham Jahrami
- Ministry of Health, Manama, Bahrain
- Department of Psychiatry, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Bahrain
| | - Maha M AlRasheed
- Clinical Pharmacy Department, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Omar Boukhris
- Sport and Exercise Science, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Australia
| | - Luca Puce
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), University of Genoa, Genoa, Ital
| | - Nicola Luigi Bragazzi
- Laboratory for Industrial and Applied Mathematics (LIAM), Department of Mathematics and Statistics, York University, Toronto, ON, Canada
| | - Achraf Ammar
- Department of Training and Movement Science, Institute of Sport Science, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Jordan M Glenn
- Department of Health, Exercise Science Research Center Human Performance and Recreation, University of Arkansas, Fayetteville, AR, USA
| | - Hamdi Chtourou
- Higher Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia
- Physical Activity, Sport, and Health, UR18JS01, National Observatory of Sport, Tunis, Tunisia
| |
Collapse
|
5
|
Salem A, Ben Maaoui K, Jahrami H, AlMarzooqi MA, Boukhris O, Messai B, Clark CCT, Glenn JM, Ghazzaoui HA, Bragazzi NL, Ammar A, Trabelsi K, Chtourou H. Attenuating Muscle Damage Biomarkers and Muscle Soreness After an Exercise-Induced Muscle Damage with Branched-Chain Amino Acid (BCAA) Supplementation: A Systematic Review and Meta-analysis with Meta-regression. SPORTS MEDICINE - OPEN 2024; 10:42. [PMID: 38625669 PMCID: PMC11021390 DOI: 10.1186/s40798-024-00686-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 02/16/2024] [Indexed: 04/17/2024]
Abstract
BACKGROUND Branched-chain amino acid (BCAA) supplementation is one of the most popular strategies used by the general population and athletes to reduce muscle soreness and accelerate the recovery process of muscle damage biomarkers after an intense exercise or training session. OBJECTIVES This systematic review and meta-analysis investigated the effects of BCAA supplementation on muscle damage biomarkers and muscle soreness after exercise-induced muscle damage (EIMD). METHODS The systematic literature search for randomized controlled trials was conducted using seven databases, up to September 13th, 2022. The eligibility criteria for selecting studies were as follows: studies performed on healthy active participants, using BCAA at least once, controlled with a placebo or control group, performing resistance or endurance exercises, and followed up at least once post-EIMD. The methodological quality of the studies was assessed using the "SIGN RCT checklist". Random-effects meta-analyses were processed to compute the standardized mean difference (Hedges' g). Meta-regression analyses were completed with daily and total dosage and supplementation as continuous moderator variables. RESULTS Of the 18 studies included in this meta-analysis, 13 were of high quality and five were of acceptable quality. Our results revealed BCAA supplementation elicits a significant effect on reducing creatine kinase (CK) levels immediately (g = - 0.44; p = 0.006) and 72 h (g = - 0.99; p = 0.002), but not 24 h, 48 h, and 96 h post-EIMD. Additionally, a significant effect on delayed onset of muscle soreness (DOMS) was identified at 24 h (g = - 1.34; p < 0.001), 48 h (g = - 1.75; p < 0.001), 72 h (g = - 1.82; p < 0.001), and 96 h (g = - 0.82; p = 0.008), but not immediately post-EIMD. No significant effect was found on lactate dehydrogenase (LDH) levels at any time point. Meta-regression indicated higher daily and total dosages of BCAA, and longer supplementation periods were related to the largest beneficial effects on CK (total dosage and supplementation period) at 48 h, and on DOMS at 24 h (only daily dosage). CONCLUSION The overall effects of BCAA supplementation could be considered useful for lowering CK and DOMS after EIMD, but not LDH. The longer supplementation period prior to the EIMD could be more effective for CK and DOMS reduction.
Collapse
Affiliation(s)
- Atef Salem
- Higher Institute of Sport and Physical Education of Sfax, University of Sfax, 3000, Sfax, Tunisia.
- Physical Activity, Sport, and Health, UR18JS01, National Observatory of Sport, 1003, Tunis, Tunisia.
- Department of Training and Movement Science, Institute of Sport Science, Johannes Gutenberg-University Mainz, Mainz, Germany.
| | - Khouloud Ben Maaoui
- Higher Institute of Sport and Physical Education of Sfax, University of Sfax, 3000, Sfax, Tunisia
| | - Haithem Jahrami
- Ministry of Health, Manama, 410, Bahrain
- Department of Psychiatry, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, 323, Bahrain
| | | | - Omar Boukhris
- Sport and Exercise Science, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, 3086, Australia
| | - Balsam Messai
- Higher Institute of Sport and Physical Education of Sfax, University of Sfax, 3000, Sfax, Tunisia
- Physical Activity, Sport, and Health, UR18JS01, National Observatory of Sport, 1003, Tunis, Tunisia
| | - Cain C T Clark
- Centre for Intelligent Healthcare, Coventry University, Coventry, CV1 5FB, UK
| | - Jordan M Glenn
- Department of Health, Exercise Science Research Center Human Performance and Recreation, University of Arkansas, Fayetteville, AR, 72701, USA
| | - Hadeel A Ghazzaoui
- Department Nutrition and Food Technology, School of Agriculture, The University of Jordan, Amman, 11942, Jordan
| | - Nicola Luigi Bragazzi
- Laboratory for Industrial and Applied Mathematics (LIAM), Department of Mathematics and Statistics, York University, Toronto, ON, M3J 1P3, Canada
| | - Achraf Ammar
- Higher Institute of Sport and Physical Education of Sfax, University of Sfax, 3000, Sfax, Tunisia
- Department of Training and Movement Science, Institute of Sport Science, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Khaled Trabelsi
- Higher Institute of Sport and Physical Education of Sfax, University of Sfax, 3000, Sfax, Tunisia
- Research Laboratory: Education, Motricity, Sport and Health, EM2S, LR19JS01, University of Sfax, 3000, Sfax, Tunisia
| | - Hamdi Chtourou
- Higher Institute of Sport and Physical Education of Sfax, University of Sfax, 3000, Sfax, Tunisia
- Physical Activity, Sport, and Health, UR18JS01, National Observatory of Sport, 1003, Tunis, Tunisia
| |
Collapse
|
6
|
Reitzner SM, Emanuelsson EB, Arif M, Kaczkowski B, Kwon AT, Mardinoglu A, Arner E, Chapman MA, Sundberg CJ. Molecular profiling of high-level athlete skeletal muscle after acute endurance or resistance exercise - A systems biology approach. Mol Metab 2024; 79:101857. [PMID: 38141850 PMCID: PMC10805945 DOI: 10.1016/j.molmet.2023.101857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 12/13/2023] [Accepted: 12/18/2023] [Indexed: 12/25/2023] Open
Abstract
OBJECTIVE Long-term high-level exercise training leads to improvements in physical performance and multi-tissue adaptation following changes in molecular pathways. While skeletal muscle baseline differences between exercise-trained and untrained individuals have been previously investigated, it remains unclear how training history influences human multi-omics responses to acute exercise. METHODS We recruited and extensively characterized 24 individuals categorized as endurance athletes with >15 years of training history, strength athletes or control subjects. Timeseries skeletal muscle biopsies were taken from M. vastus lateralis at three time-points after endurance or resistance exercise was performed and multi-omics molecular analysis performed. RESULTS Our analyses revealed distinct activation differences of molecular processes such as fatty- and amino acid metabolism and transcription factors such as HIF1A and the MYF-family. We show that endurance athletes have an increased abundance of carnitine-derivates while strength athletes increase specific phospholipid metabolites compared to control subjects. Additionally, for the first time, we show the metabolite sorbitol to be substantially increased with acute exercise. On transcriptional level, we show that acute resistance exercise stimulates more gene expression than acute endurance exercise. This follows a specific pattern, with endurance athletes uniquely down-regulating pathways related to mitochondria, translation and ribosomes. Finally, both forms of exercise training specialize in diverging transcriptional directions, differentiating themselves from the transcriptome of the untrained control group. CONCLUSIONS We identify a "transcriptional specialization effect" by transcriptional narrowing and intensification, and molecular specialization effects on metabolomic level Additionally, we performed multi-omics network and cluster analysis, providing a novel resource of skeletal muscle transcriptomic and metabolomic profiling in highly trained and untrained individuals.
Collapse
Affiliation(s)
- Stefan M Reitzner
- Department Physiology & Pharmacology, Karolinska Institutet, Solnavägen 9, 171 77 Stockholm, Sweden; Department Women's and Children's Health, Karolinska Institutet, Solnavägen 9, 171 77 Stockholm, Sweden.
| | - Eric B Emanuelsson
- Department Physiology & Pharmacology, Karolinska Institutet, Solnavägen 9, 171 77 Stockholm, Sweden
| | - Muhammad Arif
- Science for Life Laboratory, KTH - Royal Institute of Technology, Tomtebodavägen 23, 171 65 Stockholm, Sweden
| | - Bogumil Kaczkowski
- Center for Integrative Medical Sciences, RIKEN Yokohama, 1 Chome-7-22 Suehirocho, Tsurumi Ward, Yokohama, Kanagawa 230-0045, Japan
| | - Andrew Tj Kwon
- Center for Integrative Medical Sciences, RIKEN Yokohama, 1 Chome-7-22 Suehirocho, Tsurumi Ward, Yokohama, Kanagawa 230-0045, Japan
| | - Adil Mardinoglu
- Science for Life Laboratory, KTH - Royal Institute of Technology, Tomtebodavägen 23, 171 65 Stockholm, Sweden; Centre for Host-Microbiome Interactions, Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, Guy's Hospital, Great Maze Pond, London, SE1 1UL, United Kingdom
| | - Erik Arner
- Center for Integrative Medical Sciences, RIKEN Yokohama, 1 Chome-7-22 Suehirocho, Tsurumi Ward, Yokohama, Kanagawa 230-0045, Japan; Graduate School of Integrated Sciences for Life, Hiroshima University, 1 Chome-3-3-2 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan
| | - Mark A Chapman
- Department Physiology & Pharmacology, Department Women's and Children's Health, Karolinska Institutet, Solnavägen 9, 171 77 Stockholm, Sweden; Department of Integrated Engineering, University of San Diego, 5998 Alcalà Park, San Diego, CA 92110, USA
| | - Carl Johan Sundberg
- Department Physiology & Pharmacology, Department Women's and Children's Health, Karolinska Institutet, Solnavägen 9, 171 77 Stockholm, Sweden; Department of Learning, Informatics, Management and Ethics, Karolinska Institutet, Tomtebodavägen 18A, 171 65 Solna, Sweden; Department of Laboratory Medicine, Karolinska Institutet, Alfred Nobels Allé 8, 141 52 Huddinge, Sweden
| |
Collapse
|
7
|
Harrington RN. Effects of branched chain amino acids, l-citrulline, and alpha-glycerylphosphorylcholine supplementation on exercise performance in trained cyclists: a randomized crossover trial. J Int Soc Sports Nutr 2023; 20:2214112. [PMID: 37229544 DOI: 10.1080/15502783.2023.2214112] [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: 01/13/2023] [Accepted: 04/19/2023] [Indexed: 05/27/2023] Open
Abstract
BACKGROUND Nutrition plays a key role in training and athletic performance and dietary supplements can make a small, but potentially valuable, contribution to achieving peak athletic performance. This study is the first to investigate the effects of supplementation from the combination of BCAAs, L-citrulline, and A-GPC on exercise performance. METHODS In this randomized, double-blind, crossover study 30 male trained cyclists (age: 43.7 ± 8.5 years) completed a 20 km cycling time trial (TT) test and a high intensity endurance cycling (HIEC) test following a 7-day supplementation period with either a supplement containing 8 g BCAAs, 6 g L-citrulline, and 300 mg A-GPC or a placebo (15 g maltodextrin). For each trial, mean values for time to completion, peak and average power output, OMNI rating of perceived exertion, and visual analogue scale (VAS) responses on perceived exertion were computed for the 20 km TT test. Mean values for time to fatigue and VAS responses on perceived exertion were computed for the HIEC test. Procedures for dietary intake and exercise patterns were implemented to achieve consistency throughout the study period. RESULTS There was a significant increase (p = .003) in peak power in the 20 km TT (354.27 ± 87.88 and 321.67 ± 63.65, for supplement and placebo trials, respectively) and a significant increase (p = .001) in time to fatigue in the HIEC test (0:19:49 ± 0:11:13 min and 0:14:33 ± 0:09:59 min, for supplement and placebo trials, respectively) with the test supplement compared to the placebo. With the test supplement, there was an average increase in TT peak power of 11% and an average increase in time to fatigue of 36.2% in the HIEC test compared to the placebo. There was no significant improvement in time to completion, average power, OMNI rating of perceived exertion, or VAS responses on perceived exertion in the TT test and no significant improvement in VAS measures of perceived exertion in the HIEC test. CONCLUSIONS The combination of BCAAs, L-citrulline, and A-GPC used in this study improves cycling performance and may be useful for individuals seeking to improve athletic performance, particularly in disciplines requiring lower body muscular strength and endurance.
Collapse
Affiliation(s)
- Renee Nicole Harrington
- Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Raleigh, NC, USA
| |
Collapse
|
8
|
Optimization and Molecular Mechanism of Novel α-Glucosidase Inhibitory Peptides Derived from Camellia Seed Cake through Enzymatic Hydrolysis. Foods 2023; 12:foods12020393. [PMID: 36673484 PMCID: PMC9857891 DOI: 10.3390/foods12020393] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/03/2023] [Accepted: 01/11/2023] [Indexed: 01/18/2023] Open
Abstract
In recent years, food-derived hypoglycemic peptides have received a lot of attention in the study of active peptides, but their anti-diabetic mechanism of action is not yet clear. In this study, camellia seed cake protein (CSCP) was used to prepare active peptides with α-glucosidase inhibition. The optimization of the preparation of camellia seed cake protein hydrolyzed peptides (CSCPH) was conducted via response surface methodology (RSM) using a protamex with α-glucosidase inhibition as an indicator. The optimal hydrolysis conditions were pH 7.11, 4300 U/g enzyme concentration, 50 °C hydrolysis temperature, and 3.95 h hydrolysis time. Under these conditions, the α-glucosidase inhibition rate of CSCPH was 58.70% (IC50 8.442 ± 0.33 mg/mL). The peptides with high α-glucosidase inhibitory activity were isolated from CSCPH by ultrafiltration and Sephadex G25. Leu-Leu-Val-Leu-Tyr-Tyr-Glu-Tyr (LLVLYYEY) and Leu-Leu-Leu-Leu-Pro-Ser-Tyr-Ser-Glu-Phe (LLLLPSYSEF) were identified and synthesized for the first time by Liquid chromatography electrospray ionisation tandem mass spectrometry (LC-ESI-MS/MS) analysis and virtual screening with IC50 values of 0.33 and 1.11 mM, respectively. Lineweaver-Burk analysis and molecular docking demonstrated that LLVLYYEY was a non-competitive inhibitor of α-glucosidase, whereas LLLLPSYSEF inhibited α-glucosidase, which displayed a mixed inhibition mechanism. The study suggests the possibility of using peptides from Camellia seed cake as hypoglycaemic compounds for the prevention and treatment of diabetes.
Collapse
|
9
|
Rezaei R, Gabriel AS, Wu G. Dietary supplementation with branched-chain amino acids enhances milk production by lactating sows and the growth of suckling piglets. J Anim Sci Biotechnol 2022; 13:65. [PMID: 35710489 PMCID: PMC9205058 DOI: 10.1186/s40104-022-00718-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 04/10/2022] [Indexed: 11/17/2022] Open
Abstract
Background Under current dietary regimens, milk production by lactating sows is insufficient to sustain the maximal growth of their piglets. As precursors of glutamate and glutamine as well as substrates and activators of protein synthesis, branched-chain amino acids (BCAAs) have great potential for enhancing milk production by sows. Methods Thirty multiparous sows were assigned randomly into one of three groups: control (a corn- and soybean meal-based diet), the basal diet + 1.535% BCAAs; and the basal diet + 3.07% BCAAs. The ratio (g/g) among the supplemental L-isoleucine, L-leucine and L-valine was 1.00:2.56:1.23. Diets were made isonitrogenous by the addition of appropriate amounts of L-alanine. Lactating sows had free access to drinking water and their respective diets. The number of live-born piglets was standardized to 9 per sow at d 0 of lactation (the day of parturition). On d 3, 15 and 29 of lactation, body weights and milk consumption of piglets were measured, and blood samples were obtained from sows and piglets 2 h and 1 h after feeding and nursing, respectively. Results Feed intake did not differ among the three groups of sows. Concentrations of asparagine, glutamate, glutamine, citrulline, arginine, proline, BCAAs, and many other amino acids were greater (P < 0.05) in the plasma of BCAA-supplemented sows and their piglets than those in the control group. Compared with the control, dietary supplementation with 1.535% and 3.07% BCAAs increased (P < 0.05) concentrations of free and protein-bound BCAAs, glutamate plus glutamine, aspartate plus asparagine, and many other amino acids in milk; milk production by 14% and 21%, respectively; daily weight gains of piglets by 19% and 28%, respectively, while reducing preweaning mortality rates by 50% and 70%, respectively. Conclusion Dietary supplementation with up to 3.07% BCAAs enhanced milk production by lactating sows, and the growth and survival of their piglets.
Collapse
Affiliation(s)
- Reza Rezaei
- Department of Animal Science, Texas A&M University, College Station, TX, 77843, USA
| | - Ana San Gabriel
- Ajinomoto Co., Inc, 1-15-1 Kyobashi, Chuoku, Tokyo, 104-8315, Japan
| | - Guoyao Wu
- Department of Animal Science, Texas A&M University, College Station, TX, 77843, USA.
| |
Collapse
|