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Yang JC, Liu M, Huang RH, Zhao L, Niu QJ, Xu ZJ, Wei JT, Lei XG, Sun LH. Loss of SELENOW aggravates muscle loss with regulation of protein synthesis and the ubiquitin-proteasome system. SCIENCE ADVANCES 2024; 10:eadj4122. [PMID: 39303039 DOI: 10.1126/sciadv.adj4122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 08/13/2024] [Indexed: 09/22/2024]
Abstract
Sarcopenia is characterized by accelerated muscle mass and function loss, which burdens and challenges public health worldwide. Several studies indicated that selenium deficiency is associated with sarcopenia; however, the specific mechanism remains unclear. Here, we demonstrated that selenoprotein W (SELENOW) containing selenium in the form of selenocysteine functioned in sarcopenia. SELENOW expression is up-regulated in dexamethasone (DEX)-induced muscle atrophy and age-related sarcopenia mouse models. Knockout (KO) of SELENOW profoundly aggravated the process of muscle mass loss in the two mouse models. Mechanistically, SELENOW KO suppressed the RAC1-mTOR cascade by the interaction between SELENOW and RAC1 and induced the imbalance of protein synthesis and degradation. Consistently, overexpression of SELENOW in vivo and in vitro alleviated the muscle and myotube atrophy induced by DEX. SELENOW played a role in age-related sarcopenia and regulated the genes associated with aging. Together, our study uncovered the function of SELENOW in age-related sarcopenia and provides promising evidence for the prevention and treatment of sarcopenia.
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Affiliation(s)
- Jia-Cheng Yang
- State Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, Frontiers Science Center for Animal Breeding and Sustainable Production, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Meng Liu
- State Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, Frontiers Science Center for Animal Breeding and Sustainable Production, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Rong-Hui Huang
- State Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, Frontiers Science Center for Animal Breeding and Sustainable Production, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Ling Zhao
- State Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, Frontiers Science Center for Animal Breeding and Sustainable Production, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Qin-Jian Niu
- State Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, Frontiers Science Center for Animal Breeding and Sustainable Production, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Ze-Jing Xu
- State Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, Frontiers Science Center for Animal Breeding and Sustainable Production, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Jin-Tao Wei
- Institute of Animal Husbandry and Veterinary Sciences, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
| | - Xin Gen Lei
- Department of Animal Science, Cornell University, Ithaca, NY 14853, USA
| | - Lv-Hui Sun
- State Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, Frontiers Science Center for Animal Breeding and Sustainable Production, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
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Tian Z, Wei M, Xue R, Song L, Li H, Ji H, Xiao P, Sun J. Comparative study on the transcriptional activities of grass carp (Ctenopharyngodon idellus) peroxisome proliferator-activated receptors induced by different fatty acids. Comp Biochem Physiol B Biochem Mol Biol 2024; 275:111021. [PMID: 39151662 DOI: 10.1016/j.cbpb.2024.111021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 08/13/2024] [Accepted: 08/13/2024] [Indexed: 08/19/2024]
Abstract
Peroxisome proliferator-activated receptors (PPARs) are ligand-activated transcription factors that are part of the nuclear hormone receptor family, playing a crucial role in gene expression regulation. They serve as a connection between lipid metabolism disorders and innate immunity by being activated by fatty acids and their derivatives, facilitating signal transduction between the cell surface and nucleus. However, the specific transcriptional effects of different fatty acids (FAs) in fish are not yet fully understood. In our research, we identified and characterized PPARs in grass carp (Ctenopharyngodon idellus). The complete coding sequences of pparαa, pparαb, pparγ, pparδa, and pparδb were 1443 bp, 1404 bp, 1569 bp, 1551 bp, and 1560 bp in length, respectively. Pparα showed the highest expression in the liver, pparγ was mainly expressed in abdominal adipose tissue, and pparδ exhibited increased expression in the heart compared to other tissues. Gene localization analysis revealed that only pparδa was present in both the nucleus and cytoplasm, while the other four genes were exclusively located in the nucleus. Furthermore, our study explored the influence of various fatty acids (docosahexaenoic acid, palmitic acid, lauric acid and oleic acid at concentrations of 0, 50, 100, and 200 μM) on the transcriptional activities of different PPARs, demonstrating the diverse effects of fatty acid ligands on PPAR transcriptional activity. These results have significant implications for understanding the regulation of PPARs transcriptional activity.
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Affiliation(s)
- Zhiqi Tian
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Mingkui Wei
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Rongrong Xue
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Lei Song
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Handong Li
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Hong Ji
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Peizhen Xiao
- Beijing Sunpu Biochemical and Technology Co., Ltd., Beijing 100126, China
| | - Jian Sun
- College of Animal Science and Technology, Northwest A&F University, Yangling, China.
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Shen Y, Zhang C, Dai C, Zhang Y, Wang K, Gao Z, Chen X, Yang X, Sun H, Yao X, Xu L, Liu H. Nutritional Strategies for Muscle Atrophy: Current Evidence and Underlying Mechanisms. Mol Nutr Food Res 2024; 68:e2300347. [PMID: 38712453 DOI: 10.1002/mnfr.202300347] [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: 05/26/2023] [Revised: 02/28/2024] [Indexed: 05/08/2024]
Abstract
Skeletal muscle can undergo detrimental changes in various diseases, leading to muscle dysfunction and atrophy, thus severely affecting people's lives. Along with exercise, there is a growing interest in the potential of nutritional support against muscle atrophy. This review provides a brief overview of the molecular mechanisms driving skeletal muscle atrophy and summarizes recent advances in nutritional interventions for preventing and treating muscle atrophy. The nutritional supplements include amino acids and their derivatives (such as leucine, β-hydroxy, β-methylbutyrate, and creatine), various antioxidant supplements (like Coenzyme Q10 and mitoquinone, resveratrol, curcumin, quercetin, Omega 3 fatty acids), minerals (such as magnesium and selenium), and vitamins (such as vitamin B, vitamin C, vitamin D, and vitamin E), as well as probiotics and prebiotics (like Lactobacillus, Bifidobacterium, and 1-kestose). Furthermore, the study discusses the impact of a combined approach involving nutritional support and physical therapy to prevent muscle atrophy, suggests appropriate multi-nutritional and multi-modal interventions based on individual conditions to optimize treatment outcomes, and enhances the recovery of muscle function for patients. By understanding the molecular mechanisms behind skeletal muscle atrophy and implementing appropriate interventions, it is possible to enhance the recovery of muscle function and improve patients' quality of life.
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Grants
- 81901933 National Natural Science Foundation of China
- 82072160 National Natural Science Foundation of China
- 20KJA310012 Major Natural Science Research Projects in Universities of Jiangsu Province
- BK20202013 Natural Science Foundation of Jiangsu Province, and the Scientific Research Project of The Health Commission of Jiangsu Province
- BK20201209 Natural Science Foundation of Jiangsu Province, and the Scientific Research Project of The Health Commission of Jiangsu Province
- ZDB2020003 Natural Science Foundation of Jiangsu Province, and the Scientific Research Project of The Health Commission of Jiangsu Province
- QingLan Project in Jiangsu Universities
- JC22022037 The Priority Academic Program Development of Jiangsu Higher Education Institutions, and Nantong Science and Technology Program, and Nantong Health Medical Research Center
- MS22022010 The Priority Academic Program Development of Jiangsu Higher Education Institutions, and Nantong Science and Technology Program, and Nantong Health Medical Research Center
- JC12022010 The Priority Academic Program Development of Jiangsu Higher Education Institutions, and Nantong Science and Technology Program, and Nantong Health Medical Research Center
- HS2022003 The Priority Academic Program Development of Jiangsu Higher Education Institutions, and Nantong Science and Technology Program, and Nantong Health Medical Research Center
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Affiliation(s)
- Yuntian Shen
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu Province, 226001, P. R. China
| | - Chen Zhang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu Province, 226001, P. R. China
| | - Chaolun Dai
- Department of Clinical Medicine, Medical College, Nantong University, Nantong, P. R. China, 226001
| | - Yijie Zhang
- Department of Clinical Medicine, Medical College, Nantong University, Nantong, P. R. China, 226001
| | - Kexin Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu Province, 226001, P. R. China
| | - Zihui Gao
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu Province, 226001, P. R. China
| | - Xin Chen
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, Jiangsu Province, 226001, P. R. China
| | - Xiaoming Yang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu Province, 226001, P. R. China
| | - Hualin Sun
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu Province, 226001, P. R. China
| | - Xinlei Yao
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu Province, 226001, P. R. China
| | - Lingchi Xu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, NMPA Key Laboratory for Research and Evaluation of Tissue Engineering Technology Products, Nantong University, Nantong, Jiangsu Province, 226001, P. R. China
| | - Hua Liu
- Department of Orthopedics, Haian Hospital of Traditional Chinese Medicine, Nantong, Jiangsu Province, 226600, P. R. China
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Ozoani H, Ezejiofor AN, Okolo KO, Orish CN, Cirovic A, Cirovic A, Orisakwe OE. Selenium and zinc alleviate hepatotoxicity induced by heavy metal mixture (cadmium, mercury, lead and arsenic) via attenuation of inflammo-oxidant pathways. ENVIRONMENTAL TOXICOLOGY 2024; 39:156-171. [PMID: 37676925 DOI: 10.1002/tox.23966] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 06/13/2023] [Accepted: 08/27/2023] [Indexed: 09/09/2023]
Abstract
Heavy metals (HM) are believed to be injurious to humans. Man is exposed to them on daily basis unknowingly, with no acceptable protocol to manage its deleterious effects. These metals occur as mixture of chemicals with varying concentrations in our atmosphere. There are growing calls for the use of essential metals in mitigating the injurious effects induced by heavy metals exposure to man; therefore, the aim of this study was to evaluate the protective effects of essential metals (Zinc and Selenium) in a mixture of heavy metal toxicity. In this study, except for negative controls, all other groups were treated with lead (PbCl2 , 20 mg kg-1 ); cadmium (CdCl2 , 1.61 mg kg-1 ); mercury (HgCl2 , 0.40 mg kg-1 ), and arsenic (NaAsO3, 10 mg kg-1 ) that were formed in distilled water. Pb, Cd, As, and Hg were administered as mixtures to 35, 6 weeks old rats weighing between 80 to 100 g for 60 days. Group I served as normal control without treatment, group II positive control received HM mixture, while groups III to V received HMM with Zn, Se, and Zn + Se respectively. Animal and liver weights, HM accumulation in the liver, food intake (FI), water intake (WI), liver function test, malondialdehyde (MDA), and inflammatory/transcription factor/apoptosis markers were checked. Also, antioxidant enzymes, and histological studies were carried out. Metal mixture accumulated in the liver and caused toxicities which were ameliorated by Zn and Se administration. HM caused significant decrease in FI, WI and distorted the level of liver enzymes, lipid peroxidation, inflammatory markers, antioxidants and architecture of the liver. Co administration with Zn or Se or both reversed the distortions. This study lays credence to the evolving research on the public health implications of low dose metal mixtures and the possible ameliorative properties of Zn and Se.
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Affiliation(s)
- Harrison Ozoani
- African Centre of Excellence for Public Health and Toxicological Research (ACE-PUTOR), University of Port Harcourt, PMB, Port Harcourt, Nigeria
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Enugu State, University of Science & Technology, Enugu, Nigeria
| | - Anthonet N Ezejiofor
- African Centre of Excellence for Public Health and Toxicological Research (ACE-PUTOR), University of Port Harcourt, PMB, Port Harcourt, Nigeria
| | - Kenneth O Okolo
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Enugu State, University of Science & Technology, Enugu, Nigeria
| | - Chinna N Orish
- Department of Anatomy, Faculty of Basic Medical Sciences, College of Health Sciences, University of Port Harcourt, PMB, Port Harcourt, Nigeria
| | - Ana Cirovic
- University of Belgrade, Faculty of Medicine, Institute of Anatomy, Belgrade, Serbia
| | - Aleksandar Cirovic
- University of Belgrade, Faculty of Medicine, Institute of Anatomy, Belgrade, Serbia
| | - Orish E Orisakwe
- African Centre of Excellence for Public Health and Toxicological Research (ACE-PUTOR), University of Port Harcourt, PMB, Port Harcourt, Nigeria
- Toxicology Division, Provictoire Research Institute, Port Harcourt, Nigeria
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Arabzadeh E, Shirvani H, Masjedi MR, Ghanei M, Hofmeister M, Rostamkhani F. Treadmill exercise with nanoselenium supplementation affects the expression of Irisin/FNDC5 and semaphorin 3A in rats exposed to cigarette smoke extract. 3 Biotech 2024; 14:4. [PMID: 38058362 PMCID: PMC10695908 DOI: 10.1007/s13205-023-03849-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 11/08/2023] [Indexed: 12/08/2023] Open
Abstract
In the current study, we investigated the impacts of 6 weeks of aerobic interval training (AIT) with selenium nanoparticles (SeNPs) on muscle, serum, and lung irisin (FNDC5) and Sema3A in rats exposed to cigarette smoke extract (CSE). To this end, 49 male Wistar rats (8 weeks old) were divided into seven groups: control, SeNPs (2.5 mg/kg b.w by oral gavage, 3 days/week, 6 weeks), AIT (49 min/day, 5 days/week for 6 weeks, interval), SeNPs + AIT, CSE (150 µL by IP injection, 1 day/week for 6 weeks), CSE + AIT, and CSE + SeNPs + AIT. The CSE group showed a significant reduction in irisin and Sema3A serum levels, as well as a decrease in FNDC5 and Sema3A gene expression in lung tissue (p < 0.05). A combined treatment (AIT with SeNPs) significantly increased the serum level and the expression of muscle and lung irisin (FNDC5) and Sema3A in CSE received groups (p < 0.05). There was a positive and significant correlation between muscle FNDC5 and lung FNDC5 in the CSE + SeNPs + AIT group (r = 0.92, p = 0.025). In addition, there was a positive and significant correlation between serum Sema3A and lung Sema3A of CSE + SeNPs + AIT group (r = 0.97, p = 0.004). Seemingly, performing aerobic exercises with the antioxidant and anti-inflammatory supplement nano-selenium in the model of lung damage (similar to COPD) can boost myokine irisin and Sema3A, especially in serum and lung tissue. These results displayed the paracrine/endocrine regulatory function of these myokines on other tissues. In other words, these interventions emphasized the creation of crosstalk between skeletal muscles and damaged lung, focusing on its recovery; however, further research is needed.
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Affiliation(s)
- Ehsan Arabzadeh
- Exercise Physiology Research Center, Life Style Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Hossein Shirvani
- Exercise Physiology Research Center, Life Style Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Masjedi
- Tobacco Control Research Center (TCRC), Iranian Anti-Tobacco Association, Tehran, Iran
| | - Mostafa Ghanei
- Chemical Injuries Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Martin Hofmeister
- Department of Food and Nutrition, Consumer Centre of the German Federal State of Bavaria, Munich, Germany
| | - Fatemeh Rostamkhani
- Department of Biology, Yadegar-e-Imam Khomeini (RAH) Shahre Rey Branch, Islamic Azad University, Tehran, Iran
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Wang L, Yin J, Liao C, Cheng R, Chen F, Yu H, Zhang X. Selenium deficiency-induced high concentration of reactive oxygen species restricts hypertrophic growth of skeletal muscle in juvenile zebrafish by suppressing TORC1-mediated protein synthesis. Br J Nutr 2023; 130:1841-1851. [PMID: 37246564 DOI: 10.1017/s0007114523000934] [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] [Indexed: 05/30/2023]
Abstract
Se deficiency causes impaired growth of fish skeletal muscle due to the retarded hypertrophy of muscle fibres. However, the inner mechanisms remain unclear. According to our previous researches, we infer this phenomenon is associated with Se deficiency-induced high concentration of reactive oxygen species (ROS), which could suppress the target of rapamycin complex 1 (TORC1) pathway-mediated protein synthesis by inhibiting protein kinase B (Akt), an upstream protein of TORC1. To test this hypothesis, juvenile zebrafish (45 d post-fertilisation) were fed a basal Se-adequate diet or a basal Se-deficient diet or them supplemented with an antioxidant (DL-α-tocopherol acetate, designed as VE) or a TOR activator (MHY1485) for 30 d. Zebrafish fed Se-deficient diets exhibited a clear Se-deficient status in skeletal muscle, which was not influenced by dietary VE and MHY1485. Se deficiency significantly elevated ROS concentrations, inhibited Akt activity and TORC1 pathway, suppressed protein synthesis in skeletal muscle, and impaired hypertrophy of skeletal muscle fibres. However, these negative effects of Se deficiency were partly (except that on ROS concentration) alleviated by dietary MHY1485 and completely alleviated by dietary VE. These data strongly support our speculation that Se deficiency-induced high concentration of ROS exerts a clear inhibiting effect on TORC1 pathway-mediated protein synthesis by regulating Akt activity, thereby restricting the hypertrophy of skeletal muscle fibres in fish. Our findings provide a mechanistic explanation for Se deficiency-caused retardation of fish skeletal muscle growth, contributing to a better understanding of the nutritional necessity and regulatory mechanisms of Se in fish muscle physiology.
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Affiliation(s)
- Li Wang
- College of Fisheries, Huazhong Agricultural University, Wuhan430070, People's Republic of China
- National R&D Center for Se-rich Agricultural Products Processing, Wuhan Polytechnic University, Wuhan430048, People's Republic of China
- School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan430048, People's Republic of China
| | - Jiaojiao Yin
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, 430023, People's Republic of China
| | - Chenlei Liao
- College of Fisheries, Huazhong Agricultural University, Wuhan430070, People's Republic of China
| | - Rui Cheng
- College of Fisheries, Huazhong Agricultural University, Wuhan430070, People's Republic of China
| | - Feifei Chen
- College of Fisheries, Huazhong Agricultural University, Wuhan430070, People's Republic of China
| | - Haodong Yu
- College of Fisheries, Huazhong Agricultural University, Wuhan430070, People's Republic of China
| | - Xuezhen Zhang
- College of Fisheries, Huazhong Agricultural University, Wuhan430070, People's Republic of China
- Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan430070, People's Republic of China
- Hubei Provincial Engineering Laboratory for Pond Aquaculture, Wuhan430070, People's Republic of China
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7
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Zavros A, Andreou E, Aphamis G, Bogdanis GC, Sakkas GK, Roupa Z, Giannaki CD. The Effects of Zinc and Selenium Co-Supplementation on Resting Metabolic Rate, Thyroid Function, Physical Fitness, and Functional Capacity in Overweight and Obese People under a Hypocaloric Diet: A Randomized, Double-Blind, and Placebo-Controlled Trial. Nutrients 2023; 15:3133. [PMID: 37513551 PMCID: PMC10386647 DOI: 10.3390/nu15143133] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/10/2023] [Accepted: 07/12/2023] [Indexed: 07/30/2023] Open
Abstract
Evidence of the effectiveness of zinc (Zn) and selenium (Se) on resting metabolic rate (RMR) and physical function parameters in people with overweight and obesity is scarce, while the effects of zinc and selenium on thyroid function and body composition are still a topic of debate and controversy. The aim of this randomized, double-blind, and placebo-controlled trial was to examine the effects of a hypocaloric diet and Se-Zn co-supplementation on RMR, thyroid function, body composition, physical fitness, and functional capacity in overweight or obese individuals. Twenty-eight overweight-obese participants (mean BMI: 29.4 ± 4.7) were randomly allocated (1:1) to the supplementation group (n = 14, 31.1 ± 5.5 yrs, 9 females) and the placebo group (n = 14, 32.1 ± 4.8 yrs, 6 females). The participants received Zn (25 mg of zinc gluconate/day) and Se (200 mcg of L-selenomethionine/day) or placebo tablets containing starch for eight weeks. The participants of both groups followed a hypocaloric diet during the intervention. RMR, thyroid function, body composition, cardiorespiratory fitness (VO2max), and functional capacity (sit-to-stand tests, timed up-and-go test, and handgrip strength) were assessed before and after the intervention. A significant interaction was found between supplementation and time on RMR (p = 0.045), with the intervention group's RMR increasing from 1923 ± 440 to 2364 ± 410 kcal/day. On the other hand, no interaction between supplementation and time on the thyroid function was found (p > 0.05). Regarding the effects of Zn/Se co-administration on Se levels, a significant interaction between supplementation and time on Se levels was detected (p = 0.004). Specifically, the intervention group's Se serum levels were increased from 83.04 ± 13.59 to 119.40 ± 23.93 μg/L. However, Zn serum levels did not change over time (90.61 ± 23.23 to 89.58 ± 10.61 umol/L). Even though all body composition outcomes improved in the intervention group more than placebo at the second measurement, no supplement × time interaction was detected on body composition (p > 0.05). Cardiorespiratory fitness did not change over the intervention. Yet, a main effect of time was found for some functional capacity tests, with both groups improving similarly over the eight-week intervention period (p < 0.05). In contrast, a supplement x group interaction was found in the performance of the timed up-and-go test (TUG) (p = 0.010), with the supplementation group improving more. In conclusion, an eight-week intervention with Zn/Se co-supplementation combined with a hypocaloric diet increased the RMR, TUG performance, and Se levels in overweight and obese people. However, thyroid function, Zn levels, body composition, and the remaining outcomes of exercise performance remained unchanged.
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Affiliation(s)
- Antonis Zavros
- Department of Life Sciences, University of Nicosia, Nicosia 2417, Cyprus
- Research Centre for Exercise and Nutrition (RECEN), Nicosia 2417, Cyprus
| | - Eleni Andreou
- Department of Life Sciences, University of Nicosia, Nicosia 2417, Cyprus
- Research Centre for Exercise and Nutrition (RECEN), Nicosia 2417, Cyprus
| | - George Aphamis
- Department of Life Sciences, University of Nicosia, Nicosia 2417, Cyprus
- Research Centre for Exercise and Nutrition (RECEN), Nicosia 2417, Cyprus
| | - Gregory C Bogdanis
- School of Physical Education and Sport Science, National and Kapodistrian University of Athens, 10679 Athens, Greece
| | - Giorgos K Sakkas
- Department of Physical Education and Sport Science, University of Thessaly, 42100 Trikala, Greece
| | - Zoe Roupa
- Department of Life Sciences, University of Nicosia, Nicosia 2417, Cyprus
| | - Christoforos D Giannaki
- Department of Life Sciences, University of Nicosia, Nicosia 2417, Cyprus
- Research Centre for Exercise and Nutrition (RECEN), Nicosia 2417, Cyprus
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8
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Huang X, Bian C, Ji H, Ji S, Sun J. DHA induces adipocyte lipolysis through endoplasmic reticulum stress and the cAMP/PKA signaling pathway in grass carp (Ctenopharyngodon idella). ANIMAL NUTRITION 2022; 13:185-196. [PMID: 37123617 PMCID: PMC10131065 DOI: 10.1016/j.aninu.2022.10.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 10/03/2022] [Accepted: 10/14/2022] [Indexed: 01/02/2023]
Abstract
Docosahexaenoic acid (DHA) is a biologically active fatty acid that reduces the accumulation of lipids. However, the molecular mechanism underlying this process, particularly in fish, is not well understood. Recent studies show that endoplasmic reticulum (ER) stress triggers the activation of the unfolded protein response, which has been revealed to play an essential role in lipid metabolism. In this study, we explored the effect of DHA on ER stress and investigated the potential molecular mechanisms underlying DHA-induced adipocyte lipolysis in grass carp (Ctenopharyngodon idella) both in vivo and in vitro. We found that DHA remarkably reduced the triglyceride content, increased the secretion of glycerol, promoted lipolysis in adipocytes and evoked ER stress, whereas inhibiting ER stress using 4-phenyl butyric acid (4-PBA) inhibited the effects of DHA (P < 0.05). These results implied that ER stress potentially participates in DHA-induced adipocyte lipolysis. Additionally, STF-083010, a specific inositol-requiring enzyme 1α (IRE1α)-inhibitor, attenuated the effects of DHA on lipolysis, demonstrating that IRE1α and X-box binding protein 1 potentially participate in DHA-induced lipolysis. DHA also activated the cyclic adenosine monophosphate (cAMP)-dependent protein kinase A (PKA) pathway by increasing the level of cAMP and activating the PKA enzyme (P < 0.05). Nevertheless, H89, a PKA inhibitor, weakened DHA-induced lipolysis by inhibiting the cAMP/PKA signaling pathway. Furthermore, inhibiting ER stress using 4-PBA also inhibited lipolysis and alleviated DHA-induced activation of the cAMP/PKA signaling pathway, suggesting that ER stress may participate in DHA-induced lipolysis through the activation of the cAMP/PKA signaling pathway. Our data illustrate that DHA supplementation can be a promising nutritional strategy for ameliorating lipid accumulation in grass carp. The present study elucidated the molecular mechanism for DHA-induced lipolysis in grass carp adipocytes and emphasized the importance of ER stress and the cAMP/PKA pathway in DHA-induced lipolysis. These results deepen our understanding of ameliorating lipids deposition in freshwater fish by targeting DHA.
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