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Hour TC, Lan Nhi NT, Lai IJ, Chuu CP, Lin PC, Chang HW, Su YF, Chen CH, Chen YK. Kaempferol-Enhanced Migration and Differentiation of C2C12 Myoblasts via ITG1B/FAK/Paxillin and IGF1R/AKT/mTOR Signaling Pathways. Mol Nutr Food Res 2024:e2300685. [PMID: 38860356 DOI: 10.1002/mnfr.202300685] [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: 10/17/2023] [Revised: 04/30/2024] [Indexed: 06/12/2024]
Abstract
SCOPE Kaempferol (KMP), a bioactive flavonoid compound found in fruits and vegetables, contributes to human health in many ways but little is known about its relationship with muscle mass. The effect of KMP on C2C12 myoblast differentiation and the mechanisms that might underlie that effect are studied. METHODS AND RESULTS This study finds that KMP (1, 10 µM) increases the migration and differentiation of C2C12 myoblasts in vitro. Studying the possible mechanism underlying its effect on migration, the study finds that KMP activates Integrin Subunit Beta 1 (ITGB1) in C2C12 myoblasts, increasing p-FAK (Tyr398) and its downstream cell division cycle 42 (CDC42), a protein previously associated with cell migration. Regarding differentiation, KMP upregulates the expression of myosin heavy chain (MHC) and activates IGF1/AKT/mTOR/P70S6K. Interestingly, pretreatment with an AKT inhibitor (LY294002) and siRNA knockdown of IGF1R leads to a decrease in cell differentiation, suggesting that IGF1/AKT activation is required for KMP to induce C2C12 myoblast differentiation. CONCLUSION Together, the findings suggest that KMP enhances the migration and differentiation of C2C12 myoblasts through the ITG1B/FAK/paxillin and IGF1R/AKT/mTOR pathways. Thus, KMP supplementation might potentially be used to prevent or delay age-related loss of muscle mass and help maintain muscle health.
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Affiliation(s)
- Tzyh-Chyuan Hour
- Department of Biochemistry, School of Medicine, Kaohsiung Medical University, Kaohsiung, 807378, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, 807378, Taiwan
| | - Nguyen Thai Lan Nhi
- Department of Biochemistry, School of Medicine, Kaohsiung Medical University, Kaohsiung, 807378, Taiwan
| | - I-Ju Lai
- Department of Nutrition, I-Shou University, Kaohsiung, 82445, Taiwan
| | - Chih-Pin Chuu
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli County, 350401, Taiwan
| | - Pei-Chen Lin
- Department of Oral Hygiene, Kaohsiung Medical University, Kaohsiung, 807378, Taiwan
| | - Hsi-Wen Chang
- Department of Biochemistry, School of Medicine, Kaohsiung Medical University, Kaohsiung, 807378, Taiwan
| | - Ying-Fang Su
- Department of Biochemistry, School of Medicine, Kaohsiung Medical University, Kaohsiung, 807378, Taiwan
| | - Chung-Hwan Chen
- Orthopaedic Research Center and Department of Orthopedics, Kaohsiung Medical University Hospital and Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung Medical University, Kaohsiung, 807378, Taiwan
| | - Yu-Kuei Chen
- Department of Nutrition, I-Shou University, Kaohsiung, 82445, Taiwan
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2
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Sabarathinam S, Satheesh S, Raja A. A computer-aided insight into the identification of significant therapeutic flavone as a promising agent for sarcopenic obesity. Nat Prod Res 2024; 38:2091-2096. [PMID: 37436875 DOI: 10.1080/14786419.2023.2232928] [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: 04/05/2023] [Revised: 06/19/2023] [Accepted: 06/28/2023] [Indexed: 07/14/2023]
Abstract
Polyphenols, the important secondary metabolites, consist of multiple phytochemicals and show numerous physiological effects. Flavones play a significant role in various chronic disorders such as diabetes.. In this study, all the flavones were encountered, and it was further filtered based on their drug-likeness properties and pharmacokinetic parameters. Existing literature confirms that flavone-based compounds are suitable as the drug of choice in sarcopenic obesity. A molecular docking study was performed toward the myostatin inhibition profile of the flavones using PDB:3HH2 as a target site. This computer-aided drug design helps select lead molecules in novel drug discovery.
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Affiliation(s)
- Sarvesh Sabarathinam
- Drug Testing Laboratory, Interdisciplinary Institute of Indian System of Medicine (IIISM), SRM Institute of Science and Technology, Kattankulathur, Chennai, Tamil Nadu, India
- Clinical Trial Unit, Interdisciplinary Institute of Indian System of Medicine (IIISM), SRM Institute of Science and Technology, Kattankulathur, Chennai, Tamil Nadu, India
| | - Sanjana Satheesh
- Department of Biotechnology, Birla Institute of Technology and Science, Dubai Campus, Dubai International Academic City, Dubai, United Arab Emirates
| | - Arun Raja
- Department of Community Medicine, Sree Balaji Medical College and Hospital, Chennai, India
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Son RH, Kim MI, Kim HM, Guo S, Lee DH, Lim GM, Kim SM, Kim JY, Kim CY. Potential of Lycii Radicis Cortex as an Ameliorative Agent for Skeletal Muscle Atrophy. Pharmaceuticals (Basel) 2024; 17:462. [PMID: 38675422 PMCID: PMC11054743 DOI: 10.3390/ph17040462] [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: 02/08/2024] [Revised: 03/25/2024] [Accepted: 03/28/2024] [Indexed: 04/28/2024] Open
Abstract
Lycii Radicis Cortex (LRC) is a traditional medicine in East Asia with various beneficial effects, including antioxidant, anti-inflammatory, anti-tumor, anti-diabetic, and anti-depressant properties. However, its potential effects on skeletal muscle atrophy have not been studied. In this study, the protective effects of LRC extract (LRCE) on dexamethasone (DEX)-induced muscle atrophy were investigated in C2C12 myotubes and mice. We evaluated the effect of LRCE on improving muscle atrophy using a variety of methods, including immunofluorescence staining, quantitative polymerase chain reaction (qPCR), Western blot, measurements of oxidative stress, apoptosis, ATP levels, and muscle tissue analysis. The results showed that LRCE improved myotube diameter, fusion index, superoxide dismutase (SOD) activity, mitochondrial content, ATP levels, expression of myogenin and myosin heavy chain (MHC), and reduced reactive oxygen species (ROS) production in dexamethasone-induced C2C12 myotubes. LRCE also enhanced protein synthesis and reduced protein degradation in the myotubes. In mice treated with DEX, LRCE restored calf thickness, decreased mRNA levels of muscle-specific RING finger protein 1 (MuRF1) and atrogin-1, and increased insulin-like growth factor 1 (IGF-1) mRNA level. Moreover, LRCE also repaired gastrocnemius muscle atrophy caused by DEX. Although human studies are not available, various preclinical studies have identified potential protective effects of LRCE against muscle atrophy, suggesting that it could be utilized in the prevention and treatment of muscle atrophy.
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Affiliation(s)
- Rak Ho Son
- College of Pharmacy and Institute of Pharmaceutical Science and Technology, Hanyang University, 55 Hanyangdaehak-ro, Ansan 15588, Republic of Korea; (R.H.S.); (H.M.K.); (S.G.); (D.H.L.); (G.M.L.)
- R&D Center, Huons Co., Ltd., 55 Hanyangdaehak-ro, Ansan 15588, Republic of Korea;
| | - Myeong Il Kim
- R&D Center, Huons Co., Ltd., 55 Hanyangdaehak-ro, Ansan 15588, Republic of Korea;
| | - Hye Mi Kim
- College of Pharmacy and Institute of Pharmaceutical Science and Technology, Hanyang University, 55 Hanyangdaehak-ro, Ansan 15588, Republic of Korea; (R.H.S.); (H.M.K.); (S.G.); (D.H.L.); (G.M.L.)
| | - Shuo Guo
- College of Pharmacy and Institute of Pharmaceutical Science and Technology, Hanyang University, 55 Hanyangdaehak-ro, Ansan 15588, Republic of Korea; (R.H.S.); (H.M.K.); (S.G.); (D.H.L.); (G.M.L.)
| | - Do Hyun Lee
- College of Pharmacy and Institute of Pharmaceutical Science and Technology, Hanyang University, 55 Hanyangdaehak-ro, Ansan 15588, Republic of Korea; (R.H.S.); (H.M.K.); (S.G.); (D.H.L.); (G.M.L.)
| | - Gyu Min Lim
- College of Pharmacy and Institute of Pharmaceutical Science and Technology, Hanyang University, 55 Hanyangdaehak-ro, Ansan 15588, Republic of Korea; (R.H.S.); (H.M.K.); (S.G.); (D.H.L.); (G.M.L.)
| | - Seong-Min Kim
- Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation (DGMIF), 88 Dongnae-ro, Daegu 41061, Republic of Korea;
| | - Jae-Yong Kim
- College of Pharmacy and Institute of Pharmaceutical Science and Technology, Hanyang University, 55 Hanyangdaehak-ro, Ansan 15588, Republic of Korea; (R.H.S.); (H.M.K.); (S.G.); (D.H.L.); (G.M.L.)
- R&D Center, Huons Co., Ltd., 55 Hanyangdaehak-ro, Ansan 15588, Republic of Korea;
| | - Chul Young Kim
- College of Pharmacy and Institute of Pharmaceutical Science and Technology, Hanyang University, 55 Hanyangdaehak-ro, Ansan 15588, Republic of Korea; (R.H.S.); (H.M.K.); (S.G.); (D.H.L.); (G.M.L.)
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Proshkina E, Koval L, Platonova E, Golubev D, Ulyasheva N, Babak T, Shaposhnikov M, Moskalev A. Polyphenols as Potential Geroprotectors. Antioxid Redox Signal 2024; 40:564-593. [PMID: 38251662 DOI: 10.1089/ars.2023.0247] [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] [Indexed: 01/23/2024]
Abstract
Significance: Currently, a large amount of evidence of beneficial effects of diets enriched with polyphenols on various aspects of health has been accumulated. These phytochemicals have a geroprotective potential slowing down the pathological processes associated with aging and ensuring longevity. In this study, a comprehensive analysis was conducted to determine the adherence of individual polyphenols to geroprotector criteria. Data from experimental models, clinical trials, and epidemiological studies were analyzed. Recent Advances: Sixty-two polyphenols have been described to increase the life span and improve biomarkers of aging in animal models. They act via evolutionarily conserved molecular mechanisms, including hormesis and maintenance of redox homeostasis, epigenetic regulation, response to cellular damage, metabolic control, and anti-inflammatory and senolytic activity. Epidemiological and clinical studies suggest that certain polyphenols have a potential for prevention and treatment of various diseases, including cancer, metabolic disorders, and cardiovascular conditions in humans. Critical Issues: Among the reviewed phytochemicals, chlorogenic acid, quercetin, epicatechin, genistein, resveratrol, and curcumin were identified as compounds with the highest geroprotective potential. However, there is a lack of unambiguous information on the effectiveness and safety of polyphenols for increasing health span, preventing and treating aging-associated diseases in humans. Future Directions: Further research is needed to fully understand the effects of polyphenols considering their long-term consumption, metabolic modification and bioavailability, complex interactions between different groups of polyphenols and with other phytochemicals, as well as their effects on individuals with different health status. Antioxid. Redox Signal. 40, 564-593.
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Affiliation(s)
- Ekaterina Proshkina
- Laboratory of Geroprotective and Radioprotective Technologies, Institute of Biology of the Federal Research Center "Komi Scientific Centre" of the Ural Branch of the Russian Academy of Sciences, Syktyvkar, Russia
| | - Liubov Koval
- Laboratory of Geroprotective and Radioprotective Technologies, Institute of Biology of the Federal Research Center "Komi Scientific Centre" of the Ural Branch of the Russian Academy of Sciences, Syktyvkar, Russia
| | - Elena Platonova
- Laboratory of Geroprotective and Radioprotective Technologies, Institute of Biology of the Federal Research Center "Komi Scientific Centre" of the Ural Branch of the Russian Academy of Sciences, Syktyvkar, Russia
| | - Denis Golubev
- Laboratory of Geroprotective and Radioprotective Technologies, Institute of Biology of the Federal Research Center "Komi Scientific Centre" of the Ural Branch of the Russian Academy of Sciences, Syktyvkar, Russia
| | - Natalia Ulyasheva
- Laboratory of Geroprotective and Radioprotective Technologies, Institute of Biology of the Federal Research Center "Komi Scientific Centre" of the Ural Branch of the Russian Academy of Sciences, Syktyvkar, Russia
| | - Tatyana Babak
- Laboratory of Geroprotective and Radioprotective Technologies, Institute of Biology of the Federal Research Center "Komi Scientific Centre" of the Ural Branch of the Russian Academy of Sciences, Syktyvkar, Russia
| | - Mikhail Shaposhnikov
- Laboratory of Geroprotective and Radioprotective Technologies, Institute of Biology of the Federal Research Center "Komi Scientific Centre" of the Ural Branch of the Russian Academy of Sciences, Syktyvkar, Russia
| | - Alexey Moskalev
- Laboratory of Geroprotective and Radioprotective Technologies, Institute of Biology of the Federal Research Center "Komi Scientific Centre" of the Ural Branch of the Russian Academy of Sciences, Syktyvkar, Russia
- Institute of Biogerontology, Lobachevsky State University, Nizhny Novgorod, Russia
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Muthamil S, Muthuramalingam P, Kim HY, Jang HJ, Lyu JH, Shin UC, Go Y, Park SH, Lee HG, Shin H, Park JH. Unlocking Prognostic Genes and Multi-Targeted Therapeutic Bioactives from Herbal Medicines to Combat Cancer-Associated Cachexia: A Transcriptomics and Network Pharmacology Approach. Int J Mol Sci 2023; 25:156. [PMID: 38203330 PMCID: PMC10778733 DOI: 10.3390/ijms25010156] [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: 10/31/2023] [Revised: 12/15/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024] Open
Abstract
Cachexia is a devastating fat tissue and muscle wasting syndrome associated with every major chronic illness, including cancer, chronic obstructive pulmonary disease, kidney disease, AIDS, and heart failure. Despite two decades of intense research, cachexia remains under-recognized by oncologists. While numerous drug candidates have been proposed for cachexia treatment, none have achieved clinical success. Only a few drugs are approved by the FDA for cachexia therapy, but a very low success rate is observed among patients. Currently, the identification of drugs from herbal medicines is a frontier research area for many diseases. In this milieu, network pharmacology, transcriptomics, cheminformatics, and molecular docking approaches were used to identify potential bioactive compounds from herbal medicines for the treatment of cancer-related cachexia. The network pharmacology approach is used to select the 32 unique genes from 238 genes involved in cachexia-related pathways, which are targeted by 34 phytocompounds identified from 12 different herbal medicines used for the treatment of muscle wasting in many countries. Gene expression profiling and functional enrichment analysis are applied to decipher the role of unique genes in cancer-associated cachexia pathways. In addition, the pharmacological properties and molecular interactions of the phytocompounds were analyzed to find the target compounds for cachexia therapy. Altogether, combined omics and network pharmacology approaches were used in the current study to untangle the complex prognostic genes involved in cachexia and phytocompounds with anti-cachectic efficacy. However, further functional and experimental validations are required to confirm the efficacy of these phytocompounds as commercial drug candidates for cancer-associated cachexia.
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Affiliation(s)
- Subramanian Muthamil
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Naju 58245, Republic of Korea; (S.M.); (H.-Y.K.); (H.-J.J.); (J.-H.L.); (U.C.S.)
| | - Pandiyan Muthuramalingam
- Division of Horticultural Science, College of Agriculture and Life Sciences, Gyeongsang National University, Jinju 52725, Republic of Korea; (P.M.); (H.S.)
| | - Hyun-Yong Kim
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Naju 58245, Republic of Korea; (S.M.); (H.-Y.K.); (H.-J.J.); (J.-H.L.); (U.C.S.)
| | - Hyun-Jun Jang
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Naju 58245, Republic of Korea; (S.M.); (H.-Y.K.); (H.-J.J.); (J.-H.L.); (U.C.S.)
| | - Ji-Hyo Lyu
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Naju 58245, Republic of Korea; (S.M.); (H.-Y.K.); (H.-J.J.); (J.-H.L.); (U.C.S.)
| | - Ung Cheol Shin
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Naju 58245, Republic of Korea; (S.M.); (H.-Y.K.); (H.-J.J.); (J.-H.L.); (U.C.S.)
| | - Younghoon Go
- Korean Medicine (KM)-Application Center, Korea Institute of Oriental Medicine, Daegu 41062, Republic of Korea;
| | - Seong-Hoon Park
- Genetic and Epigenetic Toxicology Research Group, Korea Institute of Toxicology, Daejeon 34141, Republic of Korea;
| | - Hee Gu Lee
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea;
| | - Hyunsuk Shin
- Division of Horticultural Science, College of Agriculture and Life Sciences, Gyeongsang National University, Jinju 52725, Republic of Korea; (P.M.); (H.S.)
| | - Jun Hong Park
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Naju 58245, Republic of Korea; (S.M.); (H.-Y.K.); (H.-J.J.); (J.-H.L.); (U.C.S.)
- Korean Convergence Medicine Major, University of Science & Technology (UST), KIOM Campus, Daejeon 34054, Republic of Korea
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Ding K, Jiang W, Zhangwang J, Wang Y, Zhang J, Lei M. The potential of traditional herbal active ingredients in the treatment of sarcopenia animal models: focus on therapeutic effects and mechanisms. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2023; 396:3483-3501. [PMID: 37526688 DOI: 10.1007/s00210-023-02639-7] [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: 07/03/2023] [Accepted: 07/18/2023] [Indexed: 08/02/2023]
Abstract
Sarcopenia is a major global public health problem that harms individual physical function. In 2018, the European Working Group on Sarcopenia in the Elderly 2 classified sarcopenia into primary and secondary sarcopenia. However, information on the pathogenesis and effective treatment of primary and secondary sarcopenia is limited. Traditional herbal active ingredients have biological activities that promote skeletal muscle health, showing potential preventive and therapeutic effects on sarcopenia. Therefore, this narrative review aims to provide a comprehensive overview of global traditional herbal active ingredients' beneficial therapeutic effects and molecular mechanisms on sarcopenia-related animal models. For this purpose, we conducted a literature search in three databases, PubMed, Web of Science, and Embase, consistent with the review objectives. After the screening, 12 animal studies met the review themes. The review results showed that the pathological mechanisms in sarcopenia-related animal models include imbalanced protein metabolism, oxidative stress, inflammation, apoptosis, insulin resistance, endoplasmic reticulum stress, impaired mitochondrial biogenesis, and autophagy-lysosome system aggravation. Eleven traditional herbal active ingredients exerted positive anti-sarcopenic effects by ameliorating these pathological mechanisms. This narrative review will provide meaningful insight into future studies regarding traditional herbal active ingredients for treating sarcopenia.
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Affiliation(s)
- Kaixi Ding
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
| | - Wei Jiang
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
| | - Juejue Zhangwang
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
| | - Yu Wang
- Jiangsu Provincial Hospital of Traditional Chinese Medicine, Nanjing, 210029, China
| | - Jing Zhang
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China.
| | - Ming Lei
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China.
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7
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Jung UJ. Sarcopenic Obesity: Involvement of Oxidative Stress and Beneficial Role of Antioxidant Flavonoids. Antioxidants (Basel) 2023; 12:antiox12051063. [PMID: 37237929 DOI: 10.3390/antiox12051063] [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: 03/27/2023] [Revised: 04/25/2023] [Accepted: 05/05/2023] [Indexed: 05/28/2023] Open
Abstract
Sarcopenic obesity, which refers to concurrent sarcopenia and obesity, is characterized by decreased muscle mass, strength, and performance along with abnormally excessive fat mass. Sarcopenic obesity has received considerable attention as a major health threat in older people. However, it has recently become a health problem in the general population. Sarcopenic obesity is a major risk factor for metabolic syndrome and other complications such as osteoarthritis, osteoporosis, liver disease, lung disease, renal disease, mental disease and functional disability. The pathogenesis of sarcopenic obesity is multifactorial and complicated, and it is caused by insulin resistance, inflammation, hormonal changes, decreased physical activity, poor diet and aging. Oxidative stress is a core mechanism underlying sarcopenic obesity. Some evidence indicates a protective role of antioxidant flavonoids in sarcopenic obesity, although the precise mechanisms remain unclear. This review summarizes the general characteristics and pathophysiology of sarcopenic obesity and focuses on the role of oxidative stress in sarcopenic obesity. The potential benefits of flavonoids in sarcopenic obesity have also been discussed.
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Affiliation(s)
- Un Ju Jung
- Department of Food Science and Nutrition, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan 48513, Republic of Korea
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8
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Wu H, Quan J, Wang X, Gu Y, Zhang S, Meng G, Zhang Q, Liu L, Wang X, Sun S, Jia Q, Song K, Huang J, Huo J, Zhang B, Ding G, Niu K. Soy Food Consumption Is Inversely Associated with Handgrip Strength: Results from the TCLSIH Cohort Study. Nutrients 2023; 15:nu15020391. [PMID: 36678260 PMCID: PMC9866643 DOI: 10.3390/nu15020391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 12/24/2022] [Accepted: 01/07/2023] [Indexed: 01/13/2023] Open
Abstract
Background: Soy foods contain high levels of soy protein or isoflavones, which can stimulate muscle protein synthesis and increase antioxidant capacity, and thus ameliorate muscle strength decline. However, data from epidemiological studies investigating the association of habitual soy food consumption with muscle strength decline among general Chinese adults are limited. Methods: This study included 29,525 participants (mean age: 41.6 years; 16,933 (53.8%) males). Soy food consumption was evaluated using a validated 100-item food frequency questionnaire. Handgrip strength (HGS) was assessed with a hand dynamometer. Analysis of covariance were performed to assess the multivariable-adjusted least square means (LSM) and 95% confidence interval (CI) for HGS. Results: The multiple adjusted LSM (95% CI) of HGS across soy food consumption were 35.5 (34.2, 37.1) kg for <1 time per week, 36.1 (34.6, 37.6) kg for 1 time per week, 36.3 (34.8, 37.8) kg for 2−3 times per week, and 36.6 (35.1, 38.0) kg for ≥4 times per week (p for trend < 0.001). Compared to participants with soy food consumption less than one time per week, the multiple adjusted odds ratio (95% CI) of low HGS was 0.638 (0.485, 0.836) when the weekly consumption was ≥ 4 times (p for trend < 0.01). Conclusions: Higher habitual soy food consumption was positively associated with HGS in general Chinese adults. Consumption of soy foods may have beneficial effects on muscle health.
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Affiliation(s)
- Hongmei Wu
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
- School of Public Health, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
- Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin 300070, China
- Center for International Collaborative Research on Environment, Nutrition and Public Health, Tianjin 300070, China
| | - Jing Quan
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
- School of Public Health, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Xuena Wang
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
- School of Public Health, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Yeqing Gu
- Radiation Epidemiology Research Center, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
| | - Shunming Zhang
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
- School of Public Health, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Ge Meng
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
- School of Public Health, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
- Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin 300070, China
- Center for International Collaborative Research on Environment, Nutrition and Public Health, Tianjin 300070, China
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - Qing Zhang
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Li Liu
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Xing Wang
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Shaomei Sun
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Qiyu Jia
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Kun Song
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Jian Huang
- Chinese Center for Disease Control and Prevention National Institute for Nutrition and Health, Beijing 100050, China
| | - Junsheng Huo
- Chinese Center for Disease Control and Prevention National Institute for Nutrition and Health, Beijing 100050, China
| | - Bing Zhang
- Chinese Center for Disease Control and Prevention National Institute for Nutrition and Health, Beijing 100050, China
| | - Gangqiang Ding
- Chinese Center for Disease Control and Prevention National Institute for Nutrition and Health, Beijing 100050, China
| | - Kaijun Niu
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
- School of Public Health, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
- Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin 300070, China
- Center for International Collaborative Research on Environment, Nutrition and Public Health, Tianjin 300070, China
- Radiation Epidemiology Research Center, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, China
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin 300052, China
- Correspondence:
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Jhuo CF, Hsieh SK, Chen WY, Tzen JTC. Attenuation of Skeletal Muscle Atrophy Induced by Dexamethasone in Rats by Teaghrelin Supplementation. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020688. [PMID: 36677745 PMCID: PMC9864913 DOI: 10.3390/molecules28020688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 01/05/2023] [Accepted: 01/07/2023] [Indexed: 01/13/2023]
Abstract
Muscle atrophy caused by an imbalance between the synthesis and the degradation of proteins is a syndrome commonly found in the elders. Teaghrelin, a natural compound from oolong tea, has been shown to promote cell differentiation and to inhibit dexamethasone-induced muscle atrophy in C2C12 cells. In this study, the therapeutic effects of teaghrelin on muscle atrophy were evaluated in Sprague Dawley rats treated with dexamethasone. The masses of the soleus, gastrocnemius and extensor digitorum longus muscles were reduced in dexamethasone-treated rats, and the reduction of these muscle masses was significantly attenuated when the rats were supplemented with teaghrelin. Accordingly, the level of serum creatine kinase, a marker enzyme of muscle proteolysis, was elevated in dexamethasone-treated rats, and the elevation was substantially reduced by teaghrelin supplementation. A decrease in Akt phosphorylation causing the activation of the ubiquitin-proteasome system and autophagy for protein degradation was detected in the gastrocnemius muscles of the dexamethasone-treated rats, and this signaling pathway for protein degradation was significantly inhibited by teaghrelin supplementation. Protein synthesis via the mTOR/p70S6K pathway was slowed down in the gastrocnemius muscles of the dexamethasone-treated rats and was significantly rescued after teaghrelin supplementation. Teaghrelin seemed to prevent muscle atrophy by reducing protein degradation and enhancing protein synthesis via Akt phosphorylation.
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Affiliation(s)
- Cian-Fen Jhuo
- Graduate Institute of Biotechnology, National Chung-Hsing University, Taichung 402, Taiwan
| | - Sheng-Kuo Hsieh
- Graduate Institute of Biotechnology, National Chung-Hsing University, Taichung 402, Taiwan
| | - Wen-Ying Chen
- Department of Veterinary Medicine, National Chung-Hsing University, Taichung 402, Taiwan
- Correspondence: (W.-Y.C.); (J.T.C.T.); Tel.: +886-4-22840328 (ext. 776) (J.T.C.T.); Fax: +886-4-22853527 (J.T.C.T.)
| | - Jason T. C. Tzen
- Graduate Institute of Biotechnology, National Chung-Hsing University, Taichung 402, Taiwan
- Correspondence: (W.-Y.C.); (J.T.C.T.); Tel.: +886-4-22840328 (ext. 776) (J.T.C.T.); Fax: +886-4-22853527 (J.T.C.T.)
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10
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Edwards SJ, Carter S, Nicholson T, Allen SL, Morgan PT, Jones SW, Rendeiro C, Breen L. (-)-Epicatechin and its colonic metabolite hippuric acid protect against dexamethasone-induced atrophy in skeletal muscle cells. J Nutr Biochem 2022; 110:109150. [PMID: 36049668 DOI: 10.1016/j.jnutbio.2022.109150] [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: 10/12/2021] [Revised: 05/13/2022] [Accepted: 08/10/2022] [Indexed: 01/13/2023]
Abstract
Cocoa flavanols have been shown to improve muscle function and may offer a novel approach to protect against muscle atrophy. Hippuric acid (HA) is a colonic metabolite of (-)-epicatechin (EPI), the primary bioactive compound of cocoa, and may be responsible for the associations between cocoa supplementation and muscle metabolic alterations. Accordingly, we investigated the effects of EPI and HA upon skeletal muscle morphology and metabolism within an in vitro model of muscle atrophy. Under atrophy-like conditions (24h 100μM dexamethasone (DEX)), C2C12 myotube diameter was significantly greater following co-incubation with either 25μM HA (11.19±0.39μm) or 25μM EPI (11.01±0.21μm) compared to the vehicle control (VC; 7.61±0.16μm, both P < .001). In basal and leucine-stimulated states, there was a significant reduction in myotube protein synthesis (MPS) rates following DEX treatment in VC (P = .024). Interestingly, co-incubation with EPI or HA abrogated the DEX-induced reductions in MPS rates, whereas no significant differences versus control treated myotubes (CTL) were noted. Furthermore, co-incubation with EPI or HA partially attenuated the increase in proteolysis seen in DEX-treated cells, preserving LC3 α/β II:I and caspase-3 protein expression in atrophy-like conditions. The protein content of PGC1α, ACC, and TFAM (regulators of mitochondrial function) were significantly lower in DEX-treated versus. CTL cells (all P < .050). However, co-incubation with EPI or HA was unable to prevent these DEX-induced alterations. For the first time we demonstrate that EPI and HA exert anti-atrophic effects on C2C12 myotubes, providing novel insight into the association between flavanol supplementation and favourable effects on muscle health.
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Affiliation(s)
- Sophie J Edwards
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK
| | - Steven Carter
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK; Department for Health, University of Bath, Bath, UK
| | - Thomas Nicholson
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - Sophie Louise Allen
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK; National Institute for Health Research, Birmingham Biomedical Research Centre at University Hospitals Birmingham NHS Foundation Trust and University of Birmingham, Birmingham, UK
| | - Paul T Morgan
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK
| | - Simon Wyn Jones
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - Catarina Rendeiro
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK
| | - Leigh Breen
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK; National Institute for Health Research, Birmingham Biomedical Research Centre at University Hospitals Birmingham NHS Foundation Trust and University of Birmingham, Birmingham, UK; MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, Birmingham, UK.
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11
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Zarifi SH, Bagherniya M, Banach M, Johnston TP, Sahebkar A. Phytochemicals: A potential therapeutic intervention for the prevention and treatment of cachexia. Clin Nutr 2022; 41:2843-2857. [PMID: 36403384 DOI: 10.1016/j.clnu.2022.11.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 09/26/2022] [Accepted: 11/07/2022] [Indexed: 11/11/2022]
Abstract
Cachexia, a multifactorial and often irreversible wasting syndrome, is often associated with the final phase of several chronic disorders. Although cachexia is characterized by skeletal muscle wasting and adipose tissue loss, it is a syndrome affecting different organs, which ultimately results in systemic complications and impaired quality of life. The pathogenesis and underlying molecular mechanisms of cachexia are not fully understood, and currently there are no effective standard treatments or approved drug therapies to completely reverse cachexia. Moreover, adequate nutritional interventions alone cannot significantly improve cachexia. Other approaches to ameliorate cachexia are urgently needed, and thus, the role of medicinal plants has received considerable importance in this respect due to their beneficial health properties. Increasing evidence indicates great potential of medicinal plants and their phytochemicals as an alternative and promising treatment strategy to reduce the symptoms of many diseases including cachexia. This article reviews the current status of cachexia, the molecular mechanisms of primary events driving cachexia, and state-of-the-art knowledge that reports the preventive and therapeutic activities of multiple families of phytochemical compounds and their pharmacological mode of action, which may hold promise as an alternative treatment modality for the management of cachexia. Based on our review of various in vitro and in vivo models of cachexia, we would conclude that phytochemicals may have therapeutic potential to attenuate cachexia, although clinical trials are required to unequivocally confirm this premise.
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Affiliation(s)
- Sudiyeh Hejri Zarifi
- Department of Nutrition, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Bagherniya
- Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran; Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran; Anesthesia and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Maciej Banach
- Department of Preventive Cardiology and Lipidology, Chair of Nephrology and Hypertension, Medical University of Lodz, Poland; Cardiovascular Research Centre, University of Zielona Gora, Zielona Gora, Poland
| | - Thomas P Johnston
- Division of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Missouri-Kansas City, Kansas City, MO, USA
| | - Amirhossein Sahebkar
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; School of Medicine, The University of Western Australia, Perth, Australia; Department of Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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12
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Functional Nutrients to Ameliorate Neurogenic Muscle Atrophy. Metabolites 2022; 12:metabo12111149. [DOI: 10.3390/metabo12111149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 11/15/2022] [Accepted: 11/17/2022] [Indexed: 11/22/2022] Open
Abstract
Neurogenic muscle atrophy is a debilitating condition that occurs from nerve trauma in association with diseases or during aging, leading to reduced interaction between motoneurons and skeletal fibers. Current therapeutic approaches aiming at preserving muscle mass in a scenario of decreased nervous input include physical activity and employment of drugs that slow down the progression of the condition yet provide no concrete resolution. Nutritional support appears as a precious tool, adding to the success of personalized medicine, and could thus play a relevant part in mitigating neurogenic muscle atrophy. We herein summarize the molecular pathways triggered by denervation of the skeletal muscle that could be affected by functional nutrients. In this narrative review, we examine and discuss studies pertaining to the use of functional ingredients to counteract neurogenic muscle atrophy, focusing on their preventive or curative means of action within the skeletal muscle. We reviewed experimental models of denervation in rodents and in amyotrophic lateral sclerosis, as well as that caused by aging, considering the knowledge generated with use of animal experimental models and, also, from human studies.
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13
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De Simone G, Balducci C, Forloni G, Pastorelli R, Brunelli L. Hippuric acid: Could became a barometer for frailty and geriatric syndromes? Ageing Res Rev 2021; 72:101466. [PMID: 34560280 DOI: 10.1016/j.arr.2021.101466] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 09/07/2021] [Accepted: 09/17/2021] [Indexed: 12/11/2022]
Abstract
Aging is a natural biological event that has some downsides such as increased frailty, decline in cognitive and physical functions leading to chronical diseases, and lower quality of life. There is therefore a pressing need of reliable biomarkers to identify populations at risk of developing age-associated syndromes in order to improve their quality of life, promote healthy ageing and a more appropriate clinical management, when needed. Here we discuss the importance of hippuric acid, an endogenous co-metabolite, as a possible hallmark of human aging and age-related diseases, summarizing the scientific literature over the last years. Hippuric acid, the glycine conjugate of benzoic acid, derives from the catabolism by means of intestinal microflora of dietary polyphenols found in plant-based foods (e.g. fruits, vegetables, tea and coffee). In healthy conditions hippuric acid levels in blood and/or urine rise significantly during aging while its excretion drops in conditions related with aging, including cognitive impairments, rheumatic diseases, sarcopenia and hypomobility. This literature highlights the utility of hippuric acid in urine and plasma as a plausible hallmark of frailty, related to low fruit and vegetable intake and changes in gut microflora.
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Affiliation(s)
- Giulia De Simone
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Claudia Balducci
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | | | | | - Laura Brunelli
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy.
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14
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Promises of phytochemical based nano drug delivery systems in the management of cancer. Chem Biol Interact 2021; 351:109745. [PMID: 34774839 DOI: 10.1016/j.cbi.2021.109745] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/29/2021] [Accepted: 11/09/2021] [Indexed: 12/11/2022]
Abstract
Cancer is the leading cause of human disease and death worldwide, accounting for 7.6 million deaths per year and projected to reach 13.1 million by 2030. Many phytochemicals included in traditional medicine have been utilized in the management of cancer. Conventional chemotherapy is generally known to be the most effective treatment of metastatic cancer but these cancerous cells might grow resistant to numerous anticancer drugs over time that resulting in treatment failure. This review tried to portray the advancement in the anticancer and chemopreventive effects of several phytochemicals and some of its members encapsulated in the nano-based delivery system of the drug. It comprises the issue associated with limited use of each phytoconstituents in human cancer treatment are discussed, and the benefits of entrapment into nanocarriers are evaluated in terms of drug loading efficiency, nanocarrier size, release profile of the drug, and in vitro and/or in vivo research and treatment testing, such as cytotoxicity assays and cell inhibition/viability.
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15
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Wiyanad A, Amatachaya P, Sooknuan T, Somboonporn C, Thaweewannakij T, Saengsuwan J, Amatachaya S. The use of simple muscle strength tests to reflect body compositions among individuals with spinal cord injury. Spinal Cord 2021; 60:99-105. [PMID: 34120154 DOI: 10.1038/s41393-021-00650-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 05/21/2021] [Accepted: 05/21/2021] [Indexed: 11/09/2022]
Abstract
STUDY DESIGN A cross-sectional study. OBJECTIVES To investigate the correlation between simple muscle strength tests (including handgrip test and upper limb loading during a seated push-up test [ULL-SPUT]) and body compositions among individuals with spinal cord injury (SCI). SETTING A tertiary rehabilitation center. METHODS Twenty-four participants with SCI (average age of 40 years) were cross-sectionally assessed using handgrip test, ULL-SPUT, and body compositions (including skeletal muscle mass, bone mineral content, and fat mass) using dual-energy X-ray absorptiometry scan. RESULTS The handgrip data had low-to-moderate correlation to body compositions of the arms (rs = 0.474-0.515, p < 0.05), while the ULL-SPUT data were low-to-excellently correlated to all body compositions of the arms, legs, and trunk (rs, r = 0.467-0.921, p < 0.05). CONCLUSIONS The findings extend clinical benefit of a SPUT apart from being a rehabilitation strategy to promote mobility of individuals with SCI. Simple measurement of the ULL-SPUT, which can be done using digital bathroom scales placed on a hard and even surface, appears to be strongly correlated with body compositions in a small sample of predominantly middle age, normal weight, men with paraplegia. More research is required to understand whether this test can be used clinically to assess body compositions in a more diverse SCI population, and whether it is responsive to changes in body compositions over time.
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Affiliation(s)
- Arpassanan Wiyanad
- School of Physical Therapy, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand.,Improvement of Physical Performance and Quality of Life (IPQ) Research Group, Khon Kaen University, Khon Kaen, Thailand
| | - Pipatana Amatachaya
- Improvement of Physical Performance and Quality of Life (IPQ) Research Group, Khon Kaen University, Khon Kaen, Thailand.,Department of Mechanical Engineering, Faculty of Engineering and Architecture, Rajamangala University of Technology Isan, Nakhon Ratchasima, Thailand
| | - Thanat Sooknuan
- Improvement of Physical Performance and Quality of Life (IPQ) Research Group, Khon Kaen University, Khon Kaen, Thailand.,Department of Electronics Engineering, Faculty of Engineering and Architecture, Rajamangala University of Technology Isan, Nakhon Ratchasima, Thailand
| | - Charoonsak Somboonporn
- Improvement of Physical Performance and Quality of Life (IPQ) Research Group, Khon Kaen University, Khon Kaen, Thailand.,Department of Radiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Thiwabhorn Thaweewannakij
- School of Physical Therapy, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand.,Improvement of Physical Performance and Quality of Life (IPQ) Research Group, Khon Kaen University, Khon Kaen, Thailand
| | - Jittima Saengsuwan
- Improvement of Physical Performance and Quality of Life (IPQ) Research Group, Khon Kaen University, Khon Kaen, Thailand.,Department of Rehabilitation, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Sugalya Amatachaya
- School of Physical Therapy, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand. .,Improvement of Physical Performance and Quality of Life (IPQ) Research Group, Khon Kaen University, Khon Kaen, Thailand.
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16
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Nutraceuticals in the Prevention and Treatment of the Muscle Atrophy. Nutrients 2021; 13:nu13061914. [PMID: 34199575 PMCID: PMC8227811 DOI: 10.3390/nu13061914] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 05/30/2021] [Accepted: 05/31/2021] [Indexed: 12/15/2022] Open
Abstract
Imbalance of protein homeostasis, with excessive protein degradation compared with protein synthesis, leads to the development of muscle atrophy resulting in a decrease in muscle mass and consequent muscle weakness and disability. Potential triggers of muscle atrophy include inflammation, malnutrition, aging, cancer, and an unhealthy lifestyle such as sedentariness and high fat diet. Nutraceuticals with preventive and therapeutic effects against muscle atrophy have recently received increasing attention since they are potentially more suitable for long-term use. The implementation of nutraceutical intervention might aid in the development and design of precision medicine strategies to reduce the burden of muscle atrophy. In this review, we will summarize the current knowledge on the importance of nutraceuticals in the prevention of skeletal muscle mass loss and recovery of muscle function. We also highlight the cellular and molecular mechanisms of these nutraceuticals and their possible pharmacological use, which is of great importance for the prevention and treatment of muscle atrophy.
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17
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Olive Leaf Extract Supplementation to Old Wistar Rats Attenuates Aging-Induced Sarcopenia and Increases Insulin Sensitivity in Adipose Tissue and Skeletal Muscle. Antioxidants (Basel) 2021; 10:antiox10050737. [PMID: 34067004 PMCID: PMC8151598 DOI: 10.3390/antiox10050737] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 04/27/2021] [Accepted: 05/04/2021] [Indexed: 02/07/2023] Open
Abstract
Aging is associated with increased visceral adiposity and a decrease in the amount of brown adipose tissue and muscle mass, known as sarcopenia, which results in the development of metabolic alterations such as insulin resistance. In this study, we aimed to analyze whether 3-week supplementation with a phenolic-rich olive leaf extract (OLE) to 24 months-old male Wistar rats orally (100 mg/kg) attenuated the aging-induced alterations in body composition and insulin resistance. OLE treatment increased brown adipose tissue and attenuated the aging-induced decrease in protein content and gastrocnemius weight. Treatment with OLE prevented the aging-induced increase in the expression of PPAR-γ in visceral and brown adipose tissues, while it significantly increased the expression of PPAR-α in the gastrocnemius of old rats and reduced various markers related to sarcopenia such as myostatin, HDAC-4, myogenin and MyoD. OLE supplementation increased insulin sensitivity in explants of gastrocnemius and epididymal visceral adipose tissue from aged rats through a greater activation of the PI3K/Akt pathway, probably through the attenuation of inflammation in both tissues. In conclusion, supplementation with OLE prevents the loss of muscle mass associated with aging and exerts anti-inflammatory and insulin-sensitizing effects on adipose tissue and skeletal muscle.
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