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Nishikawa K, Kimura Y, Kishi K, Inoue K, Matsuyama J, Akamaru Y, Tamura S, Kawada J, Kawase T, Kawabata R, Fujiwara Y, Kanno H, Yamada T, Shimokawa T, Imamura H. Effects of postoperative oral elemental nutritional supplement on skeletal muscle loss after gastrectomy for gastric cancer. Int J Clin Oncol 2024; 29:266-275. [PMID: 38227091 DOI: 10.1007/s10147-023-02462-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Accepted: 12/15/2023] [Indexed: 01/17/2024]
Abstract
BACKGROUND We previously showed that daily nutritional intervention with an oral elemental diet (ED) at 300 kcal/day for 6-8 weeks postoperatively decreased the percentage of body weight loss (%BWL), and that the effect was maintained for 1 year. This post hoc analysis aimed to determine whether this intervention decreased skeletal muscle mass loss 1-year post-gastrectomy. METHODS Data from consecutive, untreated patients with histopathologically confirmed stage I-III gastric adenocarcinoma who planned to undergo total gastrectomy (TG) or distal gastrectomy (DG) and were enrolled in a previously published randomized trial were used. The primary endpoint was the percentage of skeletal muscle mass index (%SMI) loss from baseline at 1 year postoperatively, based on abdominal computed tomography images obtained preoperatively and at 1 year postoperatively. RESULTS The overall median %SMI loss was lower in the ED versus control group, but the difference was not significant. The difference in %SMI loss in the ED and control groups was greater in patients with TG (10.1 vs. 13.0; P = 0.12) than in those with DG (5.5 vs. 6.8; P = 0.69). A correlation was observed between %BWL and %SMI loss in both groups (ED group, coefficient 0.591; control group, coefficient 0.644; P < 0.001 for both). Type of gastrectomy (coefficient 7.38; P = 0.001) and disease stage (coefficient - 6.43; P = 0.04) were independent predictors of postoperative skeletal muscle mass loss. CONCLUSION ED administration for 6-8 weeks following gastrectomy had no inhibitory effect on skeletal muscle loss at 1 year postoperatively. CLINICAL TRIAL REGISTRATION UMIN000023455.
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Affiliation(s)
- Kazuhiro Nishikawa
- Cancer Treatment Center, Osaka Police Hospital, 10-31 Kitayama-Cho, Tennoji-Ku, Osaka, 543-0035, Japan.
| | - Yutaka Kimura
- Department of Surgery, Kindai University Nara Hospital, 1248-1 Otoda-Cho, Ikoma, Nara, 630-0293, Japan
| | - Kentaro Kishi
- Department of Surgery, Hyogo Prefectural Nishinomiya Hospital, 13-9 Rokutanji-Cho, Nishinomiya, Hyogo, 662-0918, Japan
| | - Kentaro Inoue
- Department of Surgery, Kansai Medical University, 2 Chome-5-1 Shin-Machi, Hirakata, Osaka, 573-1010, Japan
| | - Jin Matsuyama
- Department of Gastroenterological Surgery, Higashiosaka City Medical Center, 3 Chome-4-5 Nishiiwata, Higashiosaka, Osaka, 578-8588, Japan
| | - Yusuke Akamaru
- Department of Surgery, Osaka Rosai Hospital, 1179-3 Nagasonecho, Kita-Ku, Sakai City, Osaka, 591-8025, Japan
| | - Shigeyuki Tamura
- Department of Surgery, Yao Municipal Hospital, 1 Chome-3-1, Ryugecho, Yao City, , Osaka, 581-0069, Japan
| | - Junji Kawada
- Department of Surgery, Osaka General Medical Center, 3-1-56 Bandaihigashi, Sumiyoshi-Ku, Osaka, 593-8304, Japan
| | - Tomono Kawase
- Department of Surgery, Toyonaka Municipal Hospital, 4 Chome-14-1 Shibaharacho, Toyonaka City, Osaka, 560-8565, Japan
| | - Ryohei Kawabata
- Department of Surgery, Sakai City Medical Center, 1-1-1 Ebarajicho, Nishi-Ku, Sakai City, , Osaka, 593-8304, Japan
| | - Yoshiyuki Fujiwara
- Faculty of Medicine, Division of Surgical Oncology, Department of Surgery, Tottori University, 86 Nishi-Cho, Yonago City, Tottori, 683-8503, Japan
| | - Hitoshi Kanno
- Department of Health Policy and Management, Nippon Medical School, 1 Chome-1-5 Sendagi, Bunkyo-Ku, Tokyo, 113-8602, Japan
| | - Takeshi Yamada
- Department of Digestive Surgery, Nippon Medical School, 1 Chome-1-5 Sendagi, Bunkyo-Ku, Tokyo, 113-8602, Japan
| | - Toshio Shimokawa
- Clinical Study Support Center, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama, 641-8509, Japan
| | - Hiroshi Imamura
- Department of Surgery, Toyonaka Municipal Hospital, 4 Chome-14-1 Shibaharacho, Toyonaka City, Osaka, 560-8565, Japan
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Calvani R, Picca A, Coelho-Júnior HJ, Tosato M, Marzetti E, Landi F. "Diet for the prevention and management of sarcopenia". Metabolism 2023:155637. [PMID: 37352971 DOI: 10.1016/j.metabol.2023.155637] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 06/05/2023] [Accepted: 06/15/2023] [Indexed: 06/25/2023]
Abstract
Sarcopenia is a geriatric condition characterized by a progressive loss of skeletal muscle mass and strength, with an increased risk of adverse health outcomes (e.g., falls, disability, institutionalization, reduced quality of life, mortality). Pharmacological remedies are currently unavailable for preventing the development of sarcopenia, halting its progression, or impeding its negative health outcomes. The most effective strategies to contrast sarcopenia rely on the adoption of healthier lifestyle behaviors, including adherence to high-quality diets and regular physical activity. In this review, the role of nutrition in the prevention and management of sarcopenia is summarized. Special attention is given to current "blockbuster" dietary regimes and agents used to counteract age-related muscle wasting, together with their putative mechanisms of action. Issues related to the design and implementation of effective nutritional strategies are discussed, with a focus on unanswered questions on the most appropriate timing of nutritional interventions to preserve muscle health and function into old age. A brief description is also provided on new technologies that can facilitate the development and implementation of personalized nutrition plans to contrast sarcopenia.
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Affiliation(s)
- Riccardo Calvani
- Department of Geriatrics, Orthopedics and Rheumatology, Università Cattolica del Sacro Cuore, 00168 Rome, Italy; Fondazione Policlinico Universitario "Agostino Gemelli" IRCCS, 00168 Rome, Italy.
| | - Anna Picca
- Fondazione Policlinico Universitario "Agostino Gemelli" IRCCS, 00168 Rome, Italy; Department of Medicine and Surgery, LUM University, 70100 Casamassima, Italy.
| | - Hélio José Coelho-Júnior
- Department of Geriatrics, Orthopedics and Rheumatology, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Matteo Tosato
- Fondazione Policlinico Universitario "Agostino Gemelli" IRCCS, 00168 Rome, Italy.
| | - Emanuele Marzetti
- Department of Geriatrics, Orthopedics and Rheumatology, Università Cattolica del Sacro Cuore, 00168 Rome, Italy; Fondazione Policlinico Universitario "Agostino Gemelli" IRCCS, 00168 Rome, Italy.
| | - Francesco Landi
- Department of Geriatrics, Orthopedics and Rheumatology, Università Cattolica del Sacro Cuore, 00168 Rome, Italy; Fondazione Policlinico Universitario "Agostino Gemelli" IRCCS, 00168 Rome, Italy.
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Hou YC, Wu JM, Chen KY, Wu MH, Yang PJ, Lee PC, Chen PD, Yeh SL, Lin MT. Glutamine and leucine administration attenuates muscle atrophy in sepsis. Life Sci 2023; 314:121327. [PMID: 36584912 DOI: 10.1016/j.lfs.2022.121327] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 12/02/2022] [Accepted: 12/22/2022] [Indexed: 12/28/2022]
Abstract
AIMS This study investigated whether l-glutamine (Gln) and/or l-leucine (Leu) administration could attenuate muscle atrophy in a mouse model of cecal ligation and puncture (CLP)-induced sepsis. MATERIALS AND METHODS Septic mice were given a daily intraperitoneal injection of Gln, Leu, or Gln plus Leu, and mice were sacrificed on either day 1 or 4 after CLP. Blood and muscles were collected for analysis of amino acid contents and markers related to protein degradation, muscle regeneration, and protein synthesis. KEY FINDINGS Leu treatment alone increased both muscle mass and total muscle protein content on day 4 after CLP. Gln administration reduced muscular Gln contents on day 1 and enhanced plasma Gln levels on day 4. Higher plasma branched-chain amino acid (BCAA) abundances and lower muscular BCAA levels were observed in Leu-treated mice on day 4. Gln and Leu individually suppressed muscle expressions of the E3 ubiquitin ligase genes, Trim63 and Fbxo32, on day 4 after CLP. As to muscle expressions of myogenic genes, both Gln and Leu upregulated Myog expression on day 1, but Leu alone enhanced Myf5 gene expression, whereas Gln plus Leu increased MyoD and Myog expression levels on day 4. Akt/mammalian target of rapamycin (mTOR) signaling was only activated by Gln and Leu when individually administered. SIGNIFICANCE Gln and/or Leu administration reduces sepsis-induced muscle degradation and promotes myogenic gene expressions. Leu treatment alone had more-pronounced effects on maintaining muscle mass during sepsis. A combination of Gln and Leu failed to show synergistic effects on alleviating sepsis-induced muscle atrophy.
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Affiliation(s)
- Yu-Chen Hou
- Master Program in Food Safety, College of Nutrition, Taipei Medical University, Taipei, Taiwan; School of Food Safety, College of Nutrition, Taipei Medical University, Taipei, Taiwan; Nutrition Research Center, Taipei Medical University Hospital, Taipei, Taiwan
| | - Jin-Ming Wu
- Department of Surgery, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Kuen-Yuan Chen
- Department of Surgery, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Ming-Hsun Wu
- Department of Surgery, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Po-Jen Yang
- Department of Surgery, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Po-Chu Lee
- Department of Surgery, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Po-Da Chen
- Department of Surgery, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Sung-Ling Yeh
- Department of Surgery, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Ming-Tsan Lin
- Department of Surgery, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan.
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Abstract
Nutrients can impact and regulate cellular metabolism and cell function which is particularly important for the activation and function of diverse immune subsets. Among the critical nutrients for immune cell function and fate, glutamine is possibly the most widely recognised immunonutrient, playing key roles in TCA cycle, heat shock protein responses and antioxidant systems. In addition, glutamine is also involved with inter-organ ammonia transport, and this is particularly important for not only immune cells, but also to the brain, especially in catabolic situations such as critical care and extenuating exercise. The well characterised fall in blood glutamine availability has been the main reason for studies to investigate the possible effects of glutamine replacement via supplementation but many of the results are in poor agreement. At the same time, a range of complex pathways involved in glutamine metabolism have been revealed via supplementation studies. This article will briefly review the function of glutamine in the immune system, with emphasis on metabolic mechanisms, and the emerging role of glutamine in the brain glutamate/gamma-amino butyric acid cycle. In addition, relevant aspects of glutamine supplementation are discussed.
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Bozadjieva Kramer N, Evers SS, Shin JH, Silverwood S, Wang Y, Burant CF, Sandoval DA, Seeley RJ. The Role of Elevated Branched-Chain Amino Acids in the Effects of Vertical Sleeve Gastrectomy to Reduce Weight and Improve Glucose Regulation. Cell Rep 2021; 33:108239. [PMID: 33053352 PMCID: PMC7605275 DOI: 10.1016/j.celrep.2020.108239] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 06/24/2020] [Accepted: 09/15/2020] [Indexed: 12/16/2022] Open
Abstract
Elevated levels of branched-chain amino acids (BCAAs) and their metabolites are strongly positively associated with obesity, insulin resistance, and type 2 diabetes. Bariatric surgery is among the best treatments for weight loss and associated morbidities. Clinical studies have reported that bariatric surgery decreases the circulating levels of BCAAs. The objective of this study was to test the hypothesis that reduced BCAA levels contribute to the metabolic improvements of sustained weight loss and improved glucose tolerance after vertical sleeve gastrectomy (VSG). We find that, as in humans, circulating BCAAs are significantly lower in VSG rats and mice. To increase circulating BCAAs, we tested mice with either increased dietary intake of BCAAs or impaired BCAA catabolism by total body deletion of mitochondrial phosphatase 2C (Pp2cm). Our results show that a decrease in circulating BCAAs is not necessary for sustained body weight loss and improved glucose tolerance after VSG. Increased branched-chain amino acid (BCAA) levels are biomarkers of metabolic disease, and bariatric surgeries reduce BCAA levels. Bozadjieva Kramer et al. show that both dietary and genetic manipulations can block the surgical effect on BCAAs but do not alter potent, beneficial effects on weight loss and glucose tolerance.
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Affiliation(s)
| | - Simon S Evers
- Department of Surgery, University of Michigan, Ann Arbor, MI 48109, USA
| | - Jae Hoon Shin
- Department of Surgery, University of Michigan, Ann Arbor, MI 48109, USA
| | - Sierra Silverwood
- Department of Surgery, University of Michigan, Ann Arbor, MI 48109, USA
| | - Yibin Wang
- Departments of Anesthesiology, Medicine, and Physiology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Charles F Burant
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA
| | | | - Randy J Seeley
- Department of Surgery, University of Michigan, Ann Arbor, MI 48109, USA.
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Yoshikawa N, Yamamoto M, Kuribara-Souta A, Uehara M, Yamazaki H, Tanaka H. Amino Acid Profile in 18 Patients with Rheumatic Diseases Treated with Glucocorticoids and BCAAs. J Nutr Sci Vitaminol (Tokyo) 2021; 67:180-188. [PMID: 34193677 DOI: 10.3177/jnsv.67.180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The administration of glucocorticoids to patients with rheumatic diseases often results in glucocorticoid-induced myopathy. We previously found that administration of branched-chain amino acids (BCAA) to such patients improves the loss of skeletal muscle, however, their individual differences were often observed. The present study, therefore, aims to identify specific parameters associated with BCAA-induced increases in skeletal muscle mass. Eighteen patients with rheumatic diseases treated with prednisolone were randomly assigned to receive additional BCAAs for 12 wk. Serum biochemistry, plasma fibroblast growth factor (FGF) 19 and 21, and plasma and urinary amino acid concentrations were assessed. The relationship between these parameters and the cross-sectional area (CSA) of the biceps femoris (slow-twitch muscle) and rectus femoris (fast-twitch muscle) was assessed using computed tomography. BCAA supplementation increased serum levels of creatinine and albumin and decreased ammonia and urinary 3-methylhistidine levels. With or without BCAA supplementation, each plasma amino acid concentration decreased during the study period, but the decrease was lower in patients receiving BCAA. Interestingly, a positive correlation was observed between plasma isoleucine, aspartate, and glutamate concentrations and improvement in the biceps femoris muscle atrophy. Plasma amino acid concentrations in patients with rheumatic diseases treated with glucocorticoids decreased despite tapering the dose of glucocorticoids, with a smaller decrease in the BCAA-treated group. Plasma BCAA, aspartic acid, and glutamate concentrations correlated positively with the rate of improvement in biceps femoris muscle atrophy, suggesting that these amino acids are associated with the BCAA-induced increase in muscle mass.
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Affiliation(s)
- Noritada Yoshikawa
- Department of Rheumatology and Allergy, IMSUT Hospital, The Institute of Medical Science, The University of Tokyo.,Division of Rheumatology, Center for Antibody and Vaccine Therapy, IMSUT Hospital, The Institute of Medical Science, The University of Tokyo
| | - Motohisa Yamamoto
- Department of Rheumatology and Allergy, IMSUT Hospital, The Institute of Medical Science, The University of Tokyo
| | - Akiko Kuribara-Souta
- Department of Rheumatology and Allergy, IMSUT Hospital, The Institute of Medical Science, The University of Tokyo
| | - Masaaki Uehara
- Department of Rheumatology and Allergy, IMSUT Hospital, The Institute of Medical Science, The University of Tokyo
| | - Hiroki Yamazaki
- Department of Rheumatology and Allergy, IMSUT Hospital, The Institute of Medical Science, The University of Tokyo
| | - Hirotoshi Tanaka
- Department of Rheumatology and Allergy, IMSUT Hospital, The Institute of Medical Science, The University of Tokyo.,Division of Rheumatology, Center for Antibody and Vaccine Therapy, IMSUT Hospital, The Institute of Medical Science, The University of Tokyo
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7
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The Prophylactic Effects of Glutamine on Muscle Protein Synthesis and Degradation in Rats with Ethanol-Induced Liver Damage. Nutrients 2021; 13:nu13082788. [PMID: 34444950 PMCID: PMC8398394 DOI: 10.3390/nu13082788] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 08/09/2021] [Accepted: 08/12/2021] [Indexed: 12/13/2022] Open
Abstract
The purpose of this research was to investigate the prophylactic effects of glutamine on muscle protein synthesis and degradation in rats with ethanol-induced liver injury. For the first 2 weeks, Wistar rats were divided into two groups and fed a control (n = 16) or glutamine-containing diet (n = 24). For the following 6 weeks, rats fed the control diet were further divided into two groups (n = 8 per group) according to whether their diet contained no ethanol (CC) or did contain ethanol (CE). Rats fed the glutamine-containing diet were also further divided into three groups (n = 8 per group), including a GG group (glutamine-containing diet without ethanol), GE group (control diet with ethanol), and GEG group (glutamine-containing diet with ethanol). After 6 weeks, results showed that hepatic fatty change, inflammation, altered liver function, and hyperammonemia had occurred in the CE group, but these were attenuated in the GE and GEG groups. Elevated intestinal permeability and a higher plasma endotoxin level were observed in the CE group, but both were lower in the GE and GEG groups. The level of a protein synthesis marker (p70S6K) was reduced in the CE group but was higher in both the GE and GEG groups. In conclusion, glutamine supplementation might elevate muscle protein synthesis by improving intestinal health and ameliorating liver damage in rats with chronic ethanol intake.
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Renzini A, Riera CS, Minic I, D’Ercole C, Lozanoska-Ochser B, Cedola A, Gigli G, Moresi V, Madaro L. Metabolic Remodeling in Skeletal Muscle Atrophy as a Therapeutic Target. Metabolites 2021; 11:517. [PMID: 34436458 PMCID: PMC8398298 DOI: 10.3390/metabo11080517] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/03/2021] [Accepted: 08/04/2021] [Indexed: 02/07/2023] Open
Abstract
Skeletal muscle is a highly responsive tissue, able to remodel its size and metabolism in response to external demand. Muscle fibers can vary from fast glycolytic to slow oxidative, and their frequency in a specific muscle is tightly regulated by fiber maturation, innervation, or external causes. Atrophic conditions, including aging, amyotrophic lateral sclerosis, and cancer-induced cachexia, differ in the causative factors and molecular signaling leading to muscle wasting; nevertheless, all of these conditions are characterized by metabolic remodeling, which contributes to the pathological progression of muscle atrophy. Here, we discuss how changes in muscle metabolism can be used as a therapeutic target and review the evidence in support of nutritional interventions and/or physical exercise as tools for counteracting muscle wasting in atrophic conditions.
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Affiliation(s)
- Alessandra Renzini
- Unit of Histology and Medical Embryology, Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, Sapienza University of Rome, 00185 Rome, Italy; (A.R.); (C.S.R.); (I.M.); (C.D.); (B.L.-O.); (L.M.)
| | - Carles Sánchez Riera
- Unit of Histology and Medical Embryology, Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, Sapienza University of Rome, 00185 Rome, Italy; (A.R.); (C.S.R.); (I.M.); (C.D.); (B.L.-O.); (L.M.)
| | - Isidora Minic
- Unit of Histology and Medical Embryology, Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, Sapienza University of Rome, 00185 Rome, Italy; (A.R.); (C.S.R.); (I.M.); (C.D.); (B.L.-O.); (L.M.)
| | - Chiara D’Ercole
- Unit of Histology and Medical Embryology, Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, Sapienza University of Rome, 00185 Rome, Italy; (A.R.); (C.S.R.); (I.M.); (C.D.); (B.L.-O.); (L.M.)
| | - Biliana Lozanoska-Ochser
- Unit of Histology and Medical Embryology, Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, Sapienza University of Rome, 00185 Rome, Italy; (A.R.); (C.S.R.); (I.M.); (C.D.); (B.L.-O.); (L.M.)
| | - Alessia Cedola
- Institute of Nanotechnology, c/o Dipartimento di Fisica, National Research Council (CNR-NANOTEC), Sapienza University of Rome, 00185 Rome, Italy;
| | - Giuseppe Gigli
- Institute of Nanotechnology, c/o Campus Ecotekne, National Research Council (CNR-NANOTEC), Monteroni, 73100 Lecce, Italy;
| | - Viviana Moresi
- Unit of Histology and Medical Embryology, Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, Sapienza University of Rome, 00185 Rome, Italy; (A.R.); (C.S.R.); (I.M.); (C.D.); (B.L.-O.); (L.M.)
- Institute of Nanotechnology, c/o Dipartimento di Fisica, National Research Council (CNR-NANOTEC), Sapienza University of Rome, 00185 Rome, Italy;
| | - Luca Madaro
- Unit of Histology and Medical Embryology, Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, Sapienza University of Rome, 00185 Rome, Italy; (A.R.); (C.S.R.); (I.M.); (C.D.); (B.L.-O.); (L.M.)
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Liu S, Sun Y, Zhao R, Wang Y, Zhang W, Pang W. Isoleucine increases muscle mass through promoting myogenesis and intramyocellular fat deposition. Food Funct 2020; 12:144-153. [PMID: 33289736 DOI: 10.1039/d0fo02156c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Isoleucine (Ile), as a branched-chain amino acid (BCAA), has a vital role in regulating body weight and muscle protein synthesis. However, the regulatory effect of Ile on muscle mass under high-fat diet (HFD) conditions and intramyocellular lipid deposition remains largely unclear. In this study, a feeding experiment with HFD with or without 25 g L-1 Ile was performed using 32 wild male C57BL/6J mice randomly divided into two groups. The results showed that Ile significantly increased both muscle and fat mass, as well as causing insulin resistance and meanwhile upregulating the levels of key adipogenic and myogenic proteins. More importantly, Ile damaged the mitochondrial function by vacuolation, swelling and cristae fracture in the gastrocnemius (GAS) and tibialis anterior (TA) with downregulation of mitochondrial function-related genes. Furthermore, Ile promoted myogenesis and more lipid droplet accumulation in myotubes. Compared with the control, the protein levels of myosin heavy chain (MyHC), myoblast determination protein 1 (MyoD), myogenin (MyoG), peroxisome proliferator-activated receptor gamma (PPARg) and fatty acid synthase (FAS) were upregulated in the Ile group, whereas the protein levels of adipose triglyceride lipase (ATGL) and lipoprotein lipase (LPL) were downregulated. Collectively, Ile increased muscle mass through myogenesis and intramyocellular lipid deposition. Our findings provide a new perspective for not only improving the lean juiciness of farm animals by increasing intramyocellular lipid accumulation, but also modulating myopathies under obesity.
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Affiliation(s)
- Shuge Liu
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Yunmei Sun
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Rui Zhao
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Yingqian Wang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Wanrong Zhang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Weijun Pang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Laboratory of Animal Fat Deposition and Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China.
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Zhang J, Yu Y, Wang J. Protein Nutritional Support: The Classical and Potential New Mechanisms in the Prevention and Therapy of Sarcopenia. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:4098-4108. [PMID: 32202113 DOI: 10.1021/acs.jafc.0c00688] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Sarcopenia commonly occurs in the elderly and patients with wasting diseases. The main reason is an imbalance in protein metabolism (protein degradation exceeding protein synthesis). It causes a serious decline in muscle strength and motion ability, even leading to long-term bed rest. Recent studies indicate that nutritional support is beneficial for ameliorating sarcopenia and restoring muscle function. This review will summarize the classical mechanisms of protein nutritional support for alleviating sarcopenia, such as modulating the ubiquitin-proteasome system, oxidative response, and cell autophagy, as well as the potential new mechanisms, including altering miRNA profiles and gut microbiota. In addition, the clinical application and outcome of protein nutritional support in the elderly and patients with wasting diseases are also introduced. Protein nutritional support is expected to provide new approaches for the prevention and adjuvant therapy of sarcopenia.
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Affiliation(s)
- Jingjie Zhang
- Institute of Food and Nutrition Development, Ministry of Agriculture and Rural Affairs, 12 Zhongguancun South Street, Haidian District, Beijing 100081, People's Republic of China
| | - Yonghui Yu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, 11 Fucheng Road, Haidian District, Beijing 100048, People's Republic of China
| | - Jing Wang
- Institute of Food and Nutrition Development, Ministry of Agriculture and Rural Affairs, 12 Zhongguancun South Street, Haidian District, Beijing 100081, People's Republic of China
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Utilization of Hydroxyl-Methyl Butyrate, Leucine, Glutamine and Arginine Supplementation in Nutritional Management of Sarcopenia-Implications and Clinical Considerations for Type 2 Diabetes Mellitus Risk Modulation. J Pers Med 2020; 10:jpm10010019. [PMID: 32213854 PMCID: PMC7151606 DOI: 10.3390/jpm10010019] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 03/14/2020] [Accepted: 03/19/2020] [Indexed: 01/06/2023] Open
Abstract
While onset characteristics may vary, sarcopenia gradually develops over time as a result of the aging process, leading to muscle loss, disturbance of the muscle to fat ratio, and a variety of negative symptoms undermining the wellbeing, quality of life, and lifespan in the aging population globally. There is evidence that sarcopenia may be a cause and consequence of type 2 diabetes mellitus (T2DM) in the aging population. The importance of nutritional management in the prevention and/or deceleration of sarcopenia is critical, with the main focus placed on the amount and quality of protein intake. Significant efforts are being made towards the development of medical nutrition therapies involving certain amino acids and amino compounds, as well as their combinations, for the improvement in muscle strength, muscle function and protein synthesis. This may reduce hospitalization times and hasten the recovery of patients with sarcopenia. The administration of protocols with varying dose and frequencies, as well as their efficacy, is being investigated. In the work herein, we present and evaluate data derived from human trials regarding the utilization of hydroxyl-methyl butyrate (HMB), L-leucine (Leu), L-glutamine (Gln) and L-arginine (Arg) supplementation for optimal management of sarcopenia in geriatric patients, a topic of significant clinical nutrition interest which may have important implications in T2DM status.
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Regulation of Skeletal Muscle Function by Amino Acids. Nutrients 2020; 12:nu12010261. [PMID: 31963899 PMCID: PMC7019684 DOI: 10.3390/nu12010261] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/09/2020] [Accepted: 01/16/2020] [Indexed: 12/30/2022] Open
Abstract
Amino acids are components of proteins that also exist free-form in the body; their functions can be divided into (1) nutritional, (2) sensory, and (3) biological regulatory roles. The skeletal muscle, which is the largest organ in the human body, representing ~40% of the total body weight, plays important roles in exercise, energy expenditure, and glucose/amino acid usage—processes that are modulated by various amino acids and their metabolites. In this review, we address the metabolism and function of amino acids in the skeletal muscle. The expression of PGC1α, a transcriptional coactivator, is increased in the skeletal muscle during exercise. PGC1α activates branched-chain amino acid (BCAA) metabolism and is used for energy in the tricarboxylic acid (TCA) cycle. Leucine, a BCAA, and its metabolite, β-hydroxy-β-methylbutyrate (HMB), both activate mammalian target of rapamycin complex 1 (mTORC1) and increase protein synthesis, but the mechanisms of activation appear to be different. The metabolite of valine (another BCAA), β-aminoisobutyric acid (BAIBA), is increased by exercise, is secreted by the skeletal muscle, and acts on other tissues, such as white adipose tissue, to increase energy expenditure. In addition, several amino acid-related molecules reportedly activate skeletal muscle function. Oral 5-aminolevulinic acid (ALA) supplementation can protect against mild hyperglycemia and help prevent type 2 diabetes. β-alanine levels are decreased in the skeletal muscles of aged mice. β-alanine supplementation increased the physical performance and improved the executive function induced by endurance exercise in middle-aged individuals. Further studies focusing on the effects of amino acids and their metabolites on skeletal muscle function will provide data essential for the production of food supplements for older adults, athletes, and individuals with metabolic diseases.
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Wu J, Lin M. Effects of specific nutrients on immune modulation in patients with gastrectomy. Ann Gastroenterol Surg 2020; 4:14-20. [PMID: 32021954 PMCID: PMC6992678 DOI: 10.1002/ags3.12299] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 10/23/2019] [Accepted: 10/27/2019] [Indexed: 12/20/2022] Open
Abstract
Gastric cancer (GC) is one of the most prevalent and lethal malignant neoplasms worldwide. The main treatment for GC is gastrectomy, which generally causes considerable metabolic stress to patients. To modulate cell function, maintain homeostasis of the immune response, reduce postoperative complications, and obtain favorable outcomes, physicians prescribe specific nutrients with immunomodulatory properties as supplementation to enteral or parenteral formulas, indicating immunonutrition. In the formulas, among the immunonutrients, glutamine, arginine, and n-3 polyunsaturated fatty acids are the most commonly used either alone or in combination. The present review summarizes and focuses on the evidence obtained from clinical trials and animal studies supporting the role of immunonutrients supplemented enterally or parenterally in total or subtotal gastrectomy. In addition, this review describes the possible molecular mechanisms underlying the protective action of these immunonutrients, which may contribute to therapeutic approaches to improve postoperative outcomes of gastrectomy. Combination of conventional therapy with immunonutrition seems to be a useful strategy to achieve synergistic effects in the treatment of GC patients.
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Affiliation(s)
- Jin‐Ming Wu
- Department of SurgeryNational Taiwan University Hospital and National Taiwan University College of MedicineTaipeiTaiwan
| | - Ming‐Tsan Lin
- Department of SurgeryNational Taiwan University Hospital and National Taiwan University College of MedicineTaipeiTaiwan
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Kimura Y, Nishikawa K, Kishi K, Inoue K, Matsuyama J, Akamaru Y, Tamura S, Kawada J, Kawase T, Kawabata R, Fujiwara Y, Kanno H, Yamada T, Shimokawa T, Imamura H. Long-term effects of an oral elemental nutritional supplement on post-gastrectomy body weight loss in gastric cancer patients (KSES002). Ann Gastroenterol Surg 2019; 3:648-656. [PMID: 31788653 PMCID: PMC6875942 DOI: 10.1002/ags3.12290] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 09/09/2019] [Accepted: 09/11/2019] [Indexed: 12/11/2022] Open
Abstract
Aim The present study aimed to evaluate the efficacy of short‐term nutritional intervention with an oral elemental diet (ED; Elental; EA Pharma Co., Ltd, Tokyo, Japan) at 300 kcal/day for 6‐8 weeks in the early post‐gastrectomy period on postoperative long‐term body weight loss (BWL). Methods We analyzed consecutive patients who were randomly divided to receive the regular diet with or without ED. The control group received regular diet alone post‐gastrectomy, whereas the ED group received 300 kcal ED plus regular diet for 6‐8 weeks. Primary endpoint was percentage (%) BWL (body weight loss; body weight before surgery minus that at postoperative 1 year) by surgical type. Secondary endpoints included changes in nutrition‐related blood parameters. Results Of the patients in the original trial, 106 were eligible for efficacy analyses. %BWL at postoperative 1 year was significantly lower in the ED group than in the control group among patients who underwent total gastrectomy (TG) (n = 19 and n = 17, respectively; 9.66 ± 5.98% [95% confidence interval, CI: 6.77‐12.54] vs 15.11 ± 6.78% [95% CI: 11.63‐18.60], P = .015), but not in patients who underwent distal gastrectomy (n = 38 and n = 32, respectively; 5.81 ± 7.91% [95% CI: 3.21‐8.41] vs 5.96 ± 6.20% [95% CI: 3.72‐8.19], P = .933). In multivariate analysis, ED was the only factor affecting %BWL at postoperative 1 year among patients who underwent TG. Conclusions Daily nutritional intervention (300 kcal/day ED) for 6‐8 weeks reduced %BWL not only at postoperative 6‐8 weeks but also at 1 year in patients who underwent TG. Daily nutritional intervention (300 kcal/day elemental diet) for 6‐8 weeks reduced %body weight loss not only at postoperative 6‐8 weeks but also at 1 year in patients who underwent total gastrectomy.![]()
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Affiliation(s)
- Yutaka Kimura
- Department of Surgery Faculty of Medicine Kindai University Osaka-Sayama Japan
| | - Kazuhiro Nishikawa
- Department of Surgery National Hospital Organization Osaka National Hospital Osaka Japan
| | - Kentaro Kishi
- Department of Surgery Osaka Police Hospital Osaka Japan
| | - Kentaro Inoue
- Department of Surgery Kansai Medical University Hirakata Japan
| | - Jin Matsuyama
- Department of Gastroenterological Surgery Higashiosaka City Medical Center Higashiosaka Japan
| | | | | | - Junji Kawada
- Department of Surgery Kaizuka City Hospital Kaizuka Japan
| | - Tomono Kawase
- Department of Surgery Toyonaka Municipal Hospital Toyonaka Japan
| | | | - Yoshiyuki Fujiwara
- Division of Surgical Oncology Department of Surgery Faculty of Medicine Tottori University Tottori Japan
| | - Hitoshi Kanno
- Department of Digestive Surgery Nippon Medical School Tokyo Japan
| | - Takeshi Yamada
- Department of Digestive Surgery Nippon Medical School Tokyo Japan
| | - Toshio Shimokawa
- Clinical Study Support Center Wakayama Medical University Wakayama Japan
| | - Hiroshi Imamura
- Department of Surgery Toyonaka Municipal Hospital Toyonaka Japan
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