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Misawa H, Kamishima K, Koyama T, Ohgaki L, Morisaki Y, Yamanaka T, Itohara S, Sawano S, Mizunoya W, Ogihara N. Type selective ablation of postnatal slow and fast fatigue-resistant motor neurons in mice induces late onset kinetic and postural tremor following fiber-type transition and myopathy. Exp Neurol 2024; 376:114772. [PMID: 38599366 DOI: 10.1016/j.expneurol.2024.114772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 03/28/2024] [Accepted: 04/06/2024] [Indexed: 04/12/2024]
Abstract
Animals on Earth need to hold postures and execute a series of movements under gravity and atmospheric pressure. VAChT-Cre is a transgenic Cre driver mouse line that expresses Cre recombinase selectively in motor neurons of S-type (slow-twitch fatigue-resistant) and FR-type (fast-twitch fatigue-resistant). Sequential motor unit recruitment is a fundamental principle for fine and smooth locomotion; smaller-diameter motor neurons (S-type, FR-type) first contract low-intensity oxidative type I and type IIa muscle fibers, and thereafter larger-diameter motor neurons (FInt-type, FF-type) are recruited to contract high-intensity glycolytic type IIx and type IIb muscle fibers. To selectively eliminate S- and FR-type motor neurons, VAChT-Cre mice were crossbred with NSE-DTA mice in which the cytotoxic diphtheria toxin A fragment (DTA) was expressed in Cre-expressing neurons. The VAChT-Cre;NSE-DTA mice were born normally but progressively manifested various characteristics, including body weight loss, kyphosis, kinetic and postural tremor, and muscular atrophy. The progressive kinetic and postural tremor was remarkable from around 20 weeks of age and aggravated. Muscular atrophy was apparent in slow muscles, but not in fast muscles. The increase in motor unit number estimation was detected by electromyography, reflecting compensatory re-innervation by remaining FInt- and FF-type motor neurons to the orphaned slow muscle fibers. The muscle fibers gradually manifested fast/slow hybrid phenotypes, and the remaining FInt-and FF-type motor neurons gradually disappeared. These results suggest selective ablation of S- and FR-type motor neurons induces progressive muscle fiber-type transition, exhaustion of remaining FInt- and FF-type motor neurons, and late-onset kinetic and postural tremor in mice.
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Affiliation(s)
- Hidemi Misawa
- Division of Pharmacology, Faculty of Pharmacy, Keio University, Minato-ku, Tokyo, Japan.
| | - Kai Kamishima
- Division of Pharmacology, Faculty of Pharmacy, Keio University, Minato-ku, Tokyo, Japan
| | - Tenkei Koyama
- Division of Pharmacology, Faculty of Pharmacy, Keio University, Minato-ku, Tokyo, Japan
| | - Lisa Ohgaki
- Division of Pharmacology, Faculty of Pharmacy, Keio University, Minato-ku, Tokyo, Japan
| | - Yuta Morisaki
- Division of Pharmacology, Faculty of Pharmacy, Keio University, Minato-ku, Tokyo, Japan
| | - Tomoyuki Yamanaka
- Department of Neuroscience of Disease, Brain Research Institute, Niigata University, Chuo-ku, Niigata, Japan
| | - Shigeyoshi Itohara
- Laboratory for Behavioral Genetics, RIKEN Brain Science Institute, Wako, Saitama, Japan
| | - Shoko Sawano
- Department of Food and Life Science, School of Life and Environmental Science, Azabu University, Sagamihara, Kanagawa, Japan
| | - Wataru Mizunoya
- Department of Animal Science and Biotechnology, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Naomichi Ogihara
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
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Ren Y, Chen X, Zheng X, Wang F, Sun R, Wei L, Zhang Y, Liu H, Lin Y, Hong L, Huang X, Chao Z. Diverse WGBS profiles of longissimus dorsi muscle in Hainan black goats and hybrid goats. BMC Genom Data 2023; 24:77. [PMID: 38097986 PMCID: PMC10720224 DOI: 10.1186/s12863-023-01182-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Accepted: 12/08/2023] [Indexed: 12/17/2023] Open
Abstract
BACKGROUND Goat products have played a crucial role in meeting the dietary demands of people since the Neolithic era, giving rise to a multitude of goat breeds globally with varying characteristics and meat qualities. The primary objective of this study is to pinpoint the pivotal genes and their functions responsible for regulating muscle fiber growth in the longissimus dorsi muscle (LDM) through DNA methylation modifications in Hainan black goats and hybrid goats. METHODS Whole-genome bisulfite sequencing (WGBS) was employed to scrutinize the impact of methylation on LDM growth. This was accomplished by comparing methylation differences, gene expression, and their associations with growth-related traits. RESULTS In this study, we identified a total of 3,269 genes from differentially methylated regions (DMR), and detected 189 differentially expressed genes (DEGs) through RNA-seq analysis. Hypo DMR genes were primarily enriched in KEGG terms associated with muscle development, such as MAPK and PI3K-Akt signaling pathways. We selected 11 hub genes from the network that intersected the gene sets within DMR and DEGs, and nine genes exhibited significant correlation with one or more of the three LDM growth traits, namely area, height, and weight of loin eye muscle. Particularly, PRKG1 demonstrated a negative correlation with all three traits. The top five most crucial genes played vital roles in muscle fiber growth: FOXO3 safeguarded the myofiber's immune environment, FOXO6 was involved in myotube development and differentiation, and PRKG1 facilitated vasodilatation to release more glucose. This, in turn, accelerated the transfer of glucose from blood vessels to myofibers, regulated by ADCY5 and AKT2, ultimately ensuring glycogen storage and energy provision in muscle fibers. CONCLUSION This study delved into the diverse methylation modifications affecting critical genes, which collectively contribute to the maintenance of glycogen storage around myofibers, ultimately supporting muscle fiber growth.
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Affiliation(s)
- Yuwei Ren
- Key Laboratory of Tropical Animal Breeding and Disease Research, Institute of Animal Science and Veterinary Medicine, Hainan Academy of Agricultural Sciences, Haikou, 571100, China
| | - Xing Chen
- Institute of Animal Husbandry and Veterinary, Wuhan Academy of Agricultural Science, Wuhan, 430000, China
| | - Xinli Zheng
- Key Laboratory of Tropical Animal Breeding and Disease Research, Institute of Animal Science and Veterinary Medicine, Hainan Academy of Agricultural Sciences, Haikou, 571100, China
| | - Feng Wang
- Key Laboratory of Tropical Animal Breeding and Disease Research, Institute of Animal Science and Veterinary Medicine, Hainan Academy of Agricultural Sciences, Haikou, 571100, China
| | - Ruiping Sun
- Key Laboratory of Tropical Animal Breeding and Disease Research, Institute of Animal Science and Veterinary Medicine, Hainan Academy of Agricultural Sciences, Haikou, 571100, China
| | - Limin Wei
- Key Laboratory of Tropical Animal Breeding and Disease Research, Institute of Animal Science and Veterinary Medicine, Hainan Academy of Agricultural Sciences, Haikou, 571100, China
| | - Yan Zhang
- Key Laboratory of Tropical Animal Breeding and Disease Research, Institute of Animal Science and Veterinary Medicine, Hainan Academy of Agricultural Sciences, Haikou, 571100, China
| | - Hailong Liu
- Key Laboratory of Tropical Animal Breeding and Disease Research, Institute of Animal Science and Veterinary Medicine, Hainan Academy of Agricultural Sciences, Haikou, 571100, China
| | - Yanning Lin
- Key Laboratory of Tropical Animal Breeding and Disease Research, Institute of Animal Science and Veterinary Medicine, Hainan Academy of Agricultural Sciences, Haikou, 571100, China
| | - Lingling Hong
- Key Laboratory of Tropical Animal Breeding and Disease Research, Institute of Animal Science and Veterinary Medicine, Hainan Academy of Agricultural Sciences, Haikou, 571100, China
| | - Xiaoxian Huang
- Key Laboratory of Tropical Animal Breeding and Disease Research, Institute of Animal Science and Veterinary Medicine, Hainan Academy of Agricultural Sciences, Haikou, 571100, China
| | - Zhe Chao
- Key Laboratory of Tropical Animal Breeding and Disease Research, Institute of Animal Science and Veterinary Medicine, Hainan Academy of Agricultural Sciences, Haikou, 571100, China.
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Chang X, Xu Y, Cheng L, Yi K, Gu X, Luo Z, Zhang J, Wang J, Geng F. Quantitative proteomic analysis of cattle-yak and yak longissimus thoracis provides insights into the differential mechanisms of meat quality. Food Res Int 2023; 173:113253. [PMID: 37803567 DOI: 10.1016/j.foodres.2023.113253] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 07/05/2023] [Accepted: 07/06/2023] [Indexed: 10/08/2023]
Abstract
In this study, proteins of cattle-yak longissimus thoracis (CYLT) and yak longissimus thoracis (YLT) were compared using tandem mass tag-labeled quantitative proteomic analysis. A total of 157 proteins were screened as differentially abundant proteins (DAPs) derived from 1551 quantitative proteins. Bioinformatics analysis revealed that the upregulated DAPs in CYLT were mainly involved in energy metabolism, oxidative stress, muscle fiber structure, and extracellular matrix (ECM), while the downregulated DAPs were mainly involved in energy metabolism and ECM function. The upregulated myoglobin, downregulation of NADH dehydrogenase, and upregulation of cytochrome oxidase indicated that CYLT initiates compensatory regulation in response to hypoxic high-altitude environments. Two differentially abundant myosins and five collagens suggested that CYLT and YLT may have distinct differences in the assembly structure of muscle fibers and connective tissue. These differences in energy metabolism and muscle structure will inevitably affect the postmortem physiology of "muscle to meat" and consequently the meat qualities. Therefore, our results will provide important clues to gain insight into the potential causes of meat quality differences between cattle-yak and yak based on high-altitude response.
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Affiliation(s)
- Xinping Chang
- Meat Processing Key Laboratory of Sichuan Province, School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Yisha Xu
- Meat Processing Key Laboratory of Sichuan Province, School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China.
| | - Lei Cheng
- School of Food and Health, Beijing Technology & Business University (BTBU), Beijing 100048, China.
| | - Kaige Yi
- Provincial and Ministerial Co-Founded Collaborative Innovation Center for R & D in Tibet Characteristic Agricultural and Animal Husbandry Resources, Tibet Agricultural and Animal Husbandry University, Linzhi 860000, China; College of Food Science, Tibet Agricultural and Animal Husbandry University, Linzhi 860000, China
| | - Xuedong Gu
- Provincial and Ministerial Co-Founded Collaborative Innovation Center for R & D in Tibet Characteristic Agricultural and Animal Husbandry Resources, Tibet Agricultural and Animal Husbandry University, Linzhi 860000, China; College of Food Science, Tibet Agricultural and Animal Husbandry University, Linzhi 860000, China
| | - Zhang Luo
- Provincial and Ministerial Co-Founded Collaborative Innovation Center for R & D in Tibet Characteristic Agricultural and Animal Husbandry Resources, Tibet Agricultural and Animal Husbandry University, Linzhi 860000, China; College of Food Science, Tibet Agricultural and Animal Husbandry University, Linzhi 860000, China.
| | - Jiamin Zhang
- Meat Processing Key Laboratory of Sichuan Province, School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Jinqiu Wang
- Meat Processing Key Laboratory of Sichuan Province, School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Fang Geng
- Meat Processing Key Laboratory of Sichuan Province, School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China.
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Dorand VAM, Soares NL, da Silva Andrade ADA, Ribeiro MD, de Almeida Filho EJB, Neto MM, Batista KS, de Oliveira GC, Alves AF, de Paiva Sousa MC, Silva AS, Aquino JDS. Intermittent fasting associated with aerobic exercise improves oxidative parameters and causes muscle damage without compromising the performance of Wistar rats. Nutrition 2023; 115:112159. [PMID: 37549455 DOI: 10.1016/j.nut.2023.112159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 07/04/2023] [Accepted: 07/07/2023] [Indexed: 08/09/2023]
Abstract
OBJECTIVES The aim of this study was to` investigate the effects of intermittent fasting (IF) and the possible association with aerobic exercise on performance, oxidative, biochemical, and somatic parameters of Wistar rats. METHODS Forty rats were randomized into the following groups: sedentary (SC) and trained (TC) controls, sedentary intermittent fasting (SIF), and trained intermittent fasting (TIF). The rats were subjected to IF for 15 h every day and aerobic exercise lasting 30 min, five times a week, at a speed of 15 m/min for 4 wk. Performance tests were performed at the beginning and end of the protocol. Glucose and insulin tolerance, somatic parameters, lipidogram, leptin, insulin, malondialdehyde, antioxidant capacity, C-reactive protein, alpha acid glycoprotein, creatine kinase, lactate dehydrogenase, and muscle histology were analyzed. RESULTS The trained groups had similar performance and significantly improved performance at the end of the experiment. TIF showed lower body weight (-16 g), lean mass (22.49%), homeostatic model assessment for insulin resistance (29%), and lactate dehydrogenase (48%), and higher malondialdehyde (53%) and antioxidant capacity (75%) than the TC group. The SIF and TIF groups showed a fiber area reduction and positivity marking for tumor necrosis factor-α in the muscles. CONCLUSION Although IF associated with aerobic exercise improved antioxidant capacity caused damage to muscle fibers and lean mass loss, it did not change the performance of the rats.
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Affiliation(s)
- Victor Augusto Mathias Dorand
- Laboratory of Experimental Nutrition, Department of Nutrition, Federal University of Paraíba, UFPB, João Pessoa-PB, Brazil; Post Graduate Program in Nutrition Sciences, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil
| | - Naís Lira Soares
- Laboratory of Experimental Nutrition, Department of Nutrition, Federal University of Paraíba, UFPB, João Pessoa-PB, Brazil; Post Graduate Program in Nutrition Sciences, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil
| | | | - Mateus Duarte Ribeiro
- Laboratory of Applied Studies in Physical Training to Performance and Health - LETFADS, Department of Physical Education, Federal University of Paraíba, João Pessoa, Brazil; Associate Graduate Program in Physical Education - UPE/UFPB, Department of Physical Education, Federal University of Paraíba, João Pessoa, Brazil
| | - Eder Jackson Bezerra de Almeida Filho
- Laboratory of Applied Studies in Physical Training to Performance and Health - LETFADS, Department of Physical Education, Federal University of Paraíba, João Pessoa, Brazil
| | - Manoel Miranda Neto
- Laboratory of Applied Studies in Physical Training to Performance and Health - LETFADS, Department of Physical Education, Federal University of Paraíba, João Pessoa, Brazil
| | - Kamila Sabino Batista
- Laboratory of Experimental Nutrition, Department of Nutrition, Federal University of Paraíba, UFPB, João Pessoa-PB, Brazil; Post Graduate Program in Nutrition Sciences, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil
| | | | - Adriano Francisco Alves
- Laboratory of General pathology, Department of Physiology and Pathology, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil
| | - Maria Carolina de Paiva Sousa
- Laboratory of General pathology, Department of Physiology and Pathology, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil
| | - Alexandre Sergio Silva
- Post Graduate Program in Nutrition Sciences, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil; Laboratory of Applied Studies in Physical Training to Performance and Health - LETFADS, Department of Physical Education, Federal University of Paraíba, João Pessoa, Brazil; Associate Graduate Program in Physical Education - UPE/UFPB, Department of Physical Education, Federal University of Paraíba, João Pessoa, Brazil
| | - Jailane de Souza Aquino
- Laboratory of Experimental Nutrition, Department of Nutrition, Federal University of Paraíba, UFPB, João Pessoa-PB, Brazil; Post Graduate Program in Nutrition Sciences, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil; Department of Nutrition at the Federal University of Paraíba, João Pessoa, Brazil.
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Li C, Liu Y. Regional differences in behaviors of fascicle and tendinous tissue of the biceps femoris long head during hamstring exercises. J Electromyogr Kinesiol 2023; 72:102812. [PMID: 37639900 DOI: 10.1016/j.jelekin.2023.102812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 08/03/2023] [Accepted: 08/15/2023] [Indexed: 08/31/2023] Open
Abstract
The biceps femoris long head (BFLH) gains its properties from internal elements (fascicles and tendinous tissues) which behaviors remain poorly understood across BFLH regions and dynamic tasks. The aim of this study was to assess the in vivo behaviors of fascicles and tendinous tissue in the proximal and distal regions of BFLH during different dynamic knee and hip tasks. Twenty males performed the Nordic hamstring exercise (NHE) (n = 9) and Romanian deadlift (RDL) (n = 11). Activation of the BFLH was assessed using surface electromyography signals. Ultrasound images of BFLH and kinematic data were used to estimate the interaction between fascicle and tendinous tissue. The fascicles changed less in length (p < 0.05) and contributed less to BFLH length change (p < 0.05) in NHE with higher activation (p < 0.05) relative to RDL. The higher pennation angle changes of BFLH were found in distal region compared to proximal region in both tasks (p < 0.05), while the activation of distal region was higher than activation of proximal region in NHE (p < 0.05). The BFLH length change was primarily contributed by the tendinous tissue during dynamic resistance tasks, and was contributed less by fascicles which operated more isometrically in knee-dominant NHE with higher activation relative to hip-dominant RDL. Regional differences in pennation angle change and activation during dynamic tasks suggest potential regional differences in the mechanical function of BFLH, warranting further investigation.
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Affiliation(s)
- Chen Li
- School of Sport Science, Beijing Sport University, Beijing 100084, China
| | - Ye Liu
- School of Sport Science, Beijing Sport University, Beijing 100084, China.
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Prajapati P, Kumar A, Singh J, Saraf SA, Kushwaha S. Azilsartan Ameliorates Skeletal Muscle Wasting in High Fat Diet (HFD)-induced Sarcopenic Obesity in Rats via Activating Akt Signalling Pathway. Arch Gerontol Geriatr 2023; 112:105025. [PMID: 37062187 DOI: 10.1016/j.archger.2023.105025] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/26/2023] [Accepted: 04/10/2023] [Indexed: 04/18/2023]
Abstract
An association between the loss of skeletal muscle mass and obesity in the geriatric population has been identified as a disease known as sarcopenic obesity. Therefore, therapeutic/preventive interventions are needed to ameliorate sarcopenia. The present study investigates the effect of azilsartan (AZL) on skeletal muscle loss in High-Fat Diet (HFD)-induced sarcopenic obese (SO) rats. Four- and fourteen-months male Sprague Dawley rats were used and randomized in control and azilsartan treatment. 14 months animals were fed with HFD for four months and labeled as HFD-fed SO rats. Young & old rats received 0.5% carboxymethyl cellulose as a vehicle/AZL (8 mg/kg, per oral) treatment for six weeks. Grip strength and body composition analysis were performed after the last dose of AZL. Serum and gastrocnemius (GN)muscles were collected after animal sacrifice. AZL treatment significantly increased lean muscle mass, grip strength, myofibrillar protein, and antioxidant (superoxide dismutase & nitric oxide) levels in SO rats. AZL also restored the muscle biomarkers (creatine kinase, myostatin & testosterone), and insulin levels. AZL improves cellular, and ultracellular muscle structure and prevents type I to type II myofiber transitions in SO rats. Further, immunohistochemistry results showed increased expressions of pAkt and reduced expression of MuRF-1 and TNF-α exhibiting that AZL intervention could decrease protein degradation in SO rats. In conclusion, present results showed that AZL significantly increased lean mass, and restored muscle biomarkers, and muscle architecture. Taken together, the aforementioned findings suggest that azilsartan could be a possible therapeutic approach to reduce muscle wasting in sarcopenic obesity.
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Affiliation(s)
- Priyanka Prajapati
- Department of Pharmaceutical Sciences, School of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow 226025, India
| | - Anand Kumar
- Department of Pharmaceutical Sciences, School of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow 226025, India
| | - Jiten Singh
- Department of Pharmaceutical Sciences, Central University of Haryana, Jant-Pali, Mahendergarh, Haryana 123031, India
| | - Shubhini A Saraf
- Department of Pharmaceutical Sciences, School of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow 226025, India
| | - Sapana Kushwaha
- National Institute of Pharmaceutical Education & Research, Raebareli (NIPER-R), New Transit campus, Bijnor-Sisendi Road, Near CRPF Base Camp, Sarojini Nagar, Lucknow 226002, India.
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Asfour H, Hirsinger E, Rouco R, Zarrouki F, Hayashi S, Swist S, Braun T, Patel K, Relaix F, Andrey G, Stricker S, Duprez D, Stantzou A, Amthor H. Inhibitory SMAD6 interferes with BMP dependent generation of muscle progenitor cells and perturbs proximodistal pattern of murine limb muscles. Development 2023:310501. [PMID: 37218515 DOI: 10.1242/dev.201504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 05/02/2023] [Indexed: 05/24/2023]
Abstract
The mechanism of pattern formation during limb muscle development remains poorly understood. The canonical view holds that naïve limb muscle progenitor cells (MPCs) invade a pre-established pattern of muscle connective tissue, thereby forming individual muscles. Here we show that early murine embryonic limb MPCs highly accumulate pSMAD1/5/9, demonstrating active signaling of bone morphogenetic proteins (BMP) in these cells. Overexpression of inhibitory SMAD6 in limb MPCs abrogated BMP signaling, impaired their migration and proliferation, and accelerated myogenic lineage progression. Fewer primary myofibers developed, causing an aberrant proximodistal muscle pattern. Patterning was not disturbed when SMAD6 was overexpressed in differentiated muscle, implying that the proximodistal muscle pattern depends on BMP-mediated expansion of MPCs prior to their differentiation. We show that limb MPCs differentially express Hox genes, and Hox-expressing MPCs displayed active BMP signaling. SMAD6 overexpression caused loss of HOXA11 in early limb MPCs. In conclusion, our data show that BMP signaling controls expansion of embryonic limb MPC as a prerequisite for establishing the proximodistal muscle pattern, a process that involves expression of Hox genes.
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Affiliation(s)
- Hasan Asfour
- Université Paris-Saclay, UVSQ, Inserm, END-ICAP, 78000 Versailles, France
| | - Estelle Hirsinger
- Sorbonne Université, Institut Biologie Paris Seine, CNRS UMR7622, Developmental Biology Laboratory, Inserm U1156, 75005 Paris, France
| | - Raquel Rouco
- University of Geneva, Faculty of Medicine, Department of Genetic Medicine and Development, 1211 Geneva 4, Switzerland
| | - Faouzi Zarrouki
- Université Paris-Saclay, UVSQ, Inserm, END-ICAP, 78000 Versailles, France
| | - Shinichiro Hayashi
- National Center of Neurology and Psychiatry (NCNP), National Institute of Neuroscience, Department of Neuromuscular Research, Tokyo 187-8502, Japan
| | - Sandra Swist
- Max-Planck-Institute for Heart and Lung Research, Department of Cardiac Development and Remodeling, 61231 Bad Nauheim, Germany
| | - Thomas Braun
- Max-Planck-Institute for Heart and Lung Research, Department of Cardiac Development and Remodeling, 61231 Bad Nauheim, Germany
| | - Ketan Patel
- University of Reading, School of Biological Sciences, Reading RG6 6AH, UK
| | - Frédéric Relaix
- Université Paris Est Créteil, INSERM, EnvA, EFS, AP-HP, IMRB, 94010 Créteil, France
| | - Guillaume Andrey
- University of Geneva, Faculty of Medicine, Department of Genetic Medicine and Development, 1211 Geneva 4, Switzerland
| | - Sigmar Stricker
- Freie Universität Berlin, Institute for Chemistry and Biochemistry, 14195 Berlin, Germany
| | - Delphine Duprez
- Sorbonne Université, Institut Biologie Paris Seine, CNRS UMR7622, Developmental Biology Laboratory, Inserm U1156, 75005 Paris, France
| | - Amalia Stantzou
- Université Paris-Saclay, UVSQ, Inserm, END-ICAP, 78000 Versailles, France
| | - Helge Amthor
- Université Paris-Saclay, UVSQ, Inserm, END-ICAP, 78000 Versailles, France
- AP-HP, Hôpital Raymond Poincaré, Service de Pédiatrie, 92380 Garches, France
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Li J, Liang R, Mao Y, Yang X, Luo X, Qian Z, Zhang Y, Zhu L. Effect of dietary resveratrol supplementation on muscle fiber types and meat quality in beef cattle. Meat Sci 2022; 194:108986. [PMID: 36152602 DOI: 10.1016/j.meatsci.2022.108986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 09/12/2022] [Accepted: 09/13/2022] [Indexed: 11/17/2022]
Abstract
In order to investigate the effect of dietary resveratrol supplementation on muscle fiber types and meat quality in beef cattle, a feeding experiment was undertaken. Longissimus lumborum, Psoas major and Semitendinosus muscles were collected 24 h post-mortem from two groups of cattle, which were fed with a total mixed ration (Control - CON) or supplemented with resveratrol (5 g/animal/day, RES) for 120 d before slaughter. The results showed that dietary resveratrol increased the gene expression of MyHC I and enhanced the proportion of type I fibers in three muscles. The cooking loss and Warner-Bratzler shear force of all muscles during aging for 21 days were decreased. However, the increased proportion of type I fibers resulted in a darker initial color, but did improve color stability, as the a* value of RES samples was lower initially but higher in the later stage of aging. This study indicates the supplementation potential of resveratrol for beef cattle for tenderness and color stability.
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Affiliation(s)
- Jiqiang Li
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, PR China; National R&D Center for Beef Processing Technology, Tai'an, Shandong 271018, PR China
| | - Rongrong Liang
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, PR China; National R&D Center for Beef Processing Technology, Tai'an, Shandong 271018, PR China.
| | - Yanwei Mao
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, PR China; National R&D Center for Beef Processing Technology, Tai'an, Shandong 271018, PR China.
| | - Xiaoyin Yang
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, PR China; National R&D Center for Beef Processing Technology, Tai'an, Shandong 271018, PR China.
| | - Xin Luo
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, PR China; National R&D Center for Beef Processing Technology, Tai'an, Shandong 271018, PR China.
| | - Zhanyu Qian
- Shangdu Hengchang Co., Ltd., Caoxian, Shandong 274400, PR China
| | - Yimin Zhang
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, PR China; National R&D Center for Beef Processing Technology, Tai'an, Shandong 271018, PR China.
| | - Lixian Zhu
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, PR China; National R&D Center for Beef Processing Technology, Tai'an, Shandong 271018, PR China.
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Rohani MF, Bristy AA, Hasan J, Hossain MK, Shahjahan M. Dietary Zinc in Association with Vitamin E Promotes Growth Performance of Nile Tilapia. Biol Trace Elem Res 2022; 200:4150-4159. [PMID: 34739679 DOI: 10.1007/s12011-021-03001-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 10/26/2021] [Indexed: 10/19/2022]
Abstract
Zinc (Zn) and vitamin E (VE) are essential micro-nutrients that contribute a pivotal role in the physiology and nutrition of fish. An experiment was designed to know the effects of Zn and VE addition in the diet on growth and feed utilization in Nile tilapia (Oreochromis niloticus). Four diets containing Zn (80 mg/kg), VE (50 mg/kg), Zn (80 mg/kg) + VE (50 mg/kg), and without Zn and VE (control) were fed to Nile tilapia in aquaria with triplicate groups for 6 weeks. Survival, growth parameters (weight gain, WG; %WG; specific growth rate, SGR), and feed utilization (protein efficiency ratio, PER; feed conversion ratio, FCR) were calculated at the end of the feeding trial. Several hemato-biochemical parameters (hemoglobin, Hb; red blood cell, RBC; white blood cell, WBC, and glucose) and morphology of muscle were analyzed. The growth parameters (WG, %WG, and SGR) and feed utilization (FCR and PER) improved significantly in the fish fed with Zn, VE, and Zn + VE supplemented diets. There was no significant change in the values of Hb, RBC, WBC, and glucose level among different groups. Significantly improved diameter of muscle fiber, reduced distance between muscle fiber, and increased number of the nucleus and hyperplastic muscle fiber were observed in the fish fed with Zn, VE, and Zn + VE supplemented diets. These results suggested that Zn and VE can be effectively incorporated into the diets of Nile tilapia for better growth with maximum feed utilization.
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Affiliation(s)
- Md Fazle Rohani
- Laboratory of Fish Ecophysiology, Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
- Department of Aquaculture, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - Asma Akter Bristy
- Laboratory of Fish Ecophysiology, Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - Jabed Hasan
- Laboratory of Fish Ecophysiology, Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - Md Kabir Hossain
- Laboratory of Fish Ecophysiology, Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - Md Shahjahan
- Laboratory of Fish Ecophysiology, Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh.
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10
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Greene MA, Udoka ANS, Powell RR, Noorai RE, Bruce T, Duckett SK. Impact of fetal exposure to mycotoxins on longissimus muscle fiber hypertrophy and miRNA profile. BMC Genomics 2022; 23:595. [PMID: 35971074 PMCID: PMC9380335 DOI: 10.1186/s12864-022-08794-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 07/25/2022] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Longissimus muscle samples were collected from lambs exposed in utero to mycotoxins [E-, endophyte-free tall fescue seed without ergot alkaloids (negative control) or E + , endophyte-infected tall fescue seed containing ergot alkaloids] during mid-gestation (MID; E + /E-) or late-gestation (LATE; E-/E +) harvested at two developmental stages (FETAL, gestational d133) or (MAT, near maturity, 250 d of age; n = 3/treatment/developmental stage). Muscle samples were examined to determine the impact of in utero mycotoxin exposure on skeletal muscle fiber hypertrophy and the miRNA profile at FETAL and MAT. RESULTS Longissimus weight was greater (P < 0.05) in E + /E- lambs compared to E-/E + lambs at MAT; however, FETAL longissimus weight did not differ (P > 0.10) between fescue treatments. Type I fiber cross sectional area was larger (P < 0.10) for E + /E- than E-/E + at MAT but did not differ (P > 0.10) between fescue treatments at FETAL. Type II fiber area was larger (P < 0.05) at MAT in E + /E- compared to E-/E + but did not differ (P < 0.05) between fescue treatments at FETAL. Cross-sectional Type I and Type II longissimus muscle fiber area increased (P < 0.05) from FETAL to MAT by 6.86-fold and 10.83-fold, respectively. The ratio of Type II:Type I muscle fibers was lower (P = 0.04) at MAT compared to FETAL. There were 120 miRNA differentially expressed (q < 0.05) between FETAL and MAT. Maternal fescue treatment did not alter (q > 0.05) expression of miRNAs in the longissimus muscle. miR-133, -29a, -22-3p, and -410-3p were identified as highly significant with a log2 fold change > 4. In vitro satellite cell cultures showed that selected miRNAs (miR-22-3p, 29a, 27a, and 133a) are differentially regulated during proliferation and differentiation indicating a role of miRNA in muscle hypertrophy. CONCLUSIONS Exposure to mycotoxins did not alter fiber type but had long-term impacts on postnatal muscle hypertrophy and cross-sectional area. The miRNA profile of the longissimus was not altered by Maternal mycotoxin exposure at FETAL or MAT. Developmental age altered the miRNA transcriptome and mRNA expression of known genes related to muscle growth. These results indicate that Maternal exposure to E + fescue seed during LATE gestation can alter postnatal muscle hypertrophy in sheep; however, these changes are not regulated by the miRNA transcriptome of the longissimus muscle.
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Affiliation(s)
- M A Greene
- Department of Animal and Veterinary Sciences, Clemson, USA
| | - A N S Udoka
- Department of Animal and Veterinary Sciences, Clemson, USA
| | - R R Powell
- Clemson Light Imaging Facility, Clemson, USA
| | - R E Noorai
- Genomics and Bioinformatics Facility, Clemson University, Clemson, USA
| | - T Bruce
- Clemson Light Imaging Facility, Clemson, USA.,Department of Bioengineering, Clemson University, Clemson, SC, 29634, USA
| | - S K Duckett
- Department of Animal and Veterinary Sciences, Clemson, USA.
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11
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Noonan AM, Oxland TR, Brown SHM. Investigating the active contractile function of the rat paraspinal muscles reveals unique cross-bridge kinetics in the multifidus. Eur Spine J 2022; 31:783-791. [PMID: 35089421 DOI: 10.1007/s00586-022-07120-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 11/17/2021] [Accepted: 01/13/2022] [Indexed: 11/24/2022]
Abstract
PURPOSE Various aspects of paraspinal muscle anatomy, biology, and histology have been studied; however, information on paraspinal muscle contractile function is almost nonexistent, thus hindering functional interpretation of these muscles in healthy individuals and those with low back disorders. The aim of this study was to measure and compare the contractile function and force-sarcomere length properties of muscle fibers from the multifidus (MULT) and erector spinae (ES) as well as a commonly studied lower limb muscle (Extensor digitorum longus (EDL)) in the rat. METHODS Single muscle fibers (n = 77 total from 6 animals) were isolated from each of the muscles and tested to determine their active contractile function; all fibers used in the analyses were type IIB. RESULTS There were no significant differences between muscles for specific force (sFo) (p = 0.11), active modulus (p = 0.63), average optimal sarcomere length (p = 0.27) or unloaded shortening velocity (Vo) (p = 0.69). However, there was a significant difference in the rate of force redevelopment (ktr) between muscles (p = < 0.0001), with MULT being significantly faster than both the EDL (p = < 0.0001) and ES (p = 0.0001) and no difference between the EDL and ES (p = 0.41). CONCLUSIONS This finding suggests that multifidus has faster cross-bridge turnover kinetics when compared to other muscles (ES and EDL) when matched for fiber type. Whether the faster cross-bridge kinetics translate to a functionally significant difference in whole muscle performance needs to be studied further.
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Affiliation(s)
- Alex M Noonan
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
| | - Thomas R Oxland
- Department of Orthopaedics, The University of British Columbia, Vancouver, Canada
- International Collaboration on Repair Discoveries (ICORD), The University of British Columbia, Vancouver, Canada
- Department of Mechanical Engineering, The University of British Columbia, Vancouver, Canada
| | - Stephen H M Brown
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada.
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12
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Chen W, Chen Y, Wu R, Guo G, Liu Y, Zeng B, Liao X, Wang Y, Wang X. DHA alleviates diet-induced skeletal muscle fiber remodeling via FTO/m 6A/DDIT4/PGC1α signaling. BMC Biol 2022; 20:39. [PMID: 35135551 PMCID: PMC8827147 DOI: 10.1186/s12915-022-01239-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 01/25/2022] [Indexed: 12/16/2022] Open
Abstract
Background Obesity leads to a decline in the exercise capacity of skeletal muscle, thereby reducing mobility and promoting obesity-associated health risks. Dietary intervention has been shown to be an important measure to regulate skeletal muscle function, and previous studies have demonstrated the beneficial effects of docosahexaenoic acid (DHA; 22:6 ω-3) on skeletal muscle function. At the molecular level, DHA and its metabolites were shown to be extensively involved in regulating epigenetic modifications, including DNA methylation, histone modifications, and small non-coding microRNAs. However, whether and how epigenetic modification of mRNA such as N6-methyladenosine (m6A) mediates DHA regulation of skeletal muscle function remains unknown. Here, we analyze the regulatory effect of DHA on skeletal muscle function and explore the involvement of m6A mRNA modifications in mediating such regulation. Results DHA supplement prevented HFD-induced decline in exercise capacity and conversion of muscle fiber types from slow to fast in mice. DHA-treated myoblasts display increased mitochondrial biogenesis, while slow muscle fiber formation was promoted through DHA-induced expression of PGC1α. Further analysis of the associated molecular mechanism revealed that DHA enhanced expression of the fat mass and obesity-associated gene (FTO), leading to reduced m6A levels of DNA damage-induced transcript 4 (Ddit4). Ddit4 mRNA with lower m6A marks could not be recognized and bound by the cytoplasmic m6A reader YTH domain family 2 (YTHDF2), thereby blocking the decay of Ddit4 mRNA. Accumulated Ddit4 mRNA levels accelerated its protein translation, and the consequential increased DDIT4 protein abundance promoted the expression of PGC1α, which finally elevated mitochondria biogenesis and slow muscle fiber formation. Conclusions DHA promotes mitochondrial biogenesis and skeletal muscle fiber remodeling via FTO/m6A/DDIT4/PGC1α signaling, protecting against obesity-induced decline in skeletal muscle function. Supplementary Information The online version contains supplementary material available at 10.1186/s12915-022-01239-w.
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Affiliation(s)
- Wei Chen
- College of Animal Sciences, Zhejiang University, No. 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang province, China.,Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Hangzhou, 310058, China.,Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Hangzhou, 310058, China.,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, 310058, China
| | - Yushi Chen
- College of Animal Sciences, Zhejiang University, No. 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang province, China.,Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Hangzhou, 310058, China.,Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Hangzhou, 310058, China.,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, 310058, China
| | - Ruifan Wu
- College of Animal Sciences, Zhejiang University, No. 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang province, China.,Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Hangzhou, 310058, China.,Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Hangzhou, 310058, China.,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, 310058, China
| | - Guanqun Guo
- College of Animal Sciences, Zhejiang University, No. 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang province, China.,Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Hangzhou, 310058, China.,Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Hangzhou, 310058, China.,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, 310058, China
| | - Youhua Liu
- College of Animal Sciences, Zhejiang University, No. 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang province, China.,Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Hangzhou, 310058, China.,Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Hangzhou, 310058, China.,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, 310058, China
| | - Botao Zeng
- College of Animal Sciences, Zhejiang University, No. 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang province, China.,Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Hangzhou, 310058, China.,Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Hangzhou, 310058, China.,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, 310058, China
| | - Xing Liao
- College of Animal Sciences, Zhejiang University, No. 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang province, China.,Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Hangzhou, 310058, China.,Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Hangzhou, 310058, China.,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, 310058, China
| | - Yizhen Wang
- College of Animal Sciences, Zhejiang University, No. 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang province, China.,Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Hangzhou, 310058, China.,Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Hangzhou, 310058, China.,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, 310058, China
| | - Xinxia Wang
- College of Animal Sciences, Zhejiang University, No. 866 Yuhangtang Road, Hangzhou, 310058, Zhejiang province, China. .,Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Hangzhou, 310058, China. .,Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Hangzhou, 310058, China. .,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, 310058, China.
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13
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Nandedkar SD, Stålberg EV. Marching band model for simulating a single muscle fiber action potential. Clin Neurophysiol 2021; 134:37-42. [PMID: 34971939 DOI: 10.1016/j.clinph.2021.10.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 10/15/2021] [Accepted: 10/18/2021] [Indexed: 11/18/2022]
Abstract
OBJECTIVE We describe a mathematical model to calculate a single muscle fiber action potential (AP). Based on a marching band pattern, it is an enhancement to our previously described "modified line source" model. METHODS Calculations were performed using an Excel spread sheet. AP was simulated for a 200 mm long muscle fiber with 60 µm diameter, propagation velocity of 4 m/s, and end-plate located at the center. Several different electrode locations were used to calculate the AP. RESULTS The AP amplitude was highest at the end-plate where the waveform was biphasic with initial negativity. When the electrode was moved towards the tendon, the amplitude decreased for the first 1.5 mm. The AP was triphasic and its waveform was relatively constant at electrode positions beyond 1.5 mm from the end-plate. It matched the calculations using the modified line source model. When the electrode was near the tendon, the AP amplitude decreased asymmetrically and waveform became biphasic resembling a positive sharp wave. DISCUSSION The model is conceptually and computationally simple. It simulated the expected AP shape at different electrode positions along the muscle fiber. The waveforms are similar to those obtained from mathematically complex volume conductor models. SIGNIFICANCE The revised model can be useful for teaching and future simulation studies.
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Affiliation(s)
- Sanjeev D Nandedkar
- Natus Medical Inc, Hopewell Junction, NY, USA; Medical College of Wisconsin, Milwaukee, WI, USA.
| | - Erik V Stålberg
- Academic Hospital, Institute of Neurosciences, Uppsala University, Uppsala, Sweden
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14
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Englund DA, Zhang X, Aversa Z, LeBrasseur NK. Skeletal muscle aging, cellular senescence, and senotherapeutics: Current knowledge and future directions. Mech Ageing Dev 2021; 200:111595. [PMID: 34742751 PMCID: PMC8627455 DOI: 10.1016/j.mad.2021.111595] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/29/2021] [Accepted: 11/01/2021] [Indexed: 12/16/2022]
Abstract
Cellular senescence is a state of cell cycle arrest induced by several forms of metabolic stress. Senescent cells accumulate with advancing age and have a distinctive phenotype, characterized by profound chromatin alterations and a robust senescence-associated secretory phenotype (SASP) that exerts negative effects on tissue health, both locally and systemically. In preclinical models, pharmacological agents that eliminate senescent cells (senotherapeutics) restore health and youthful properties in multiple tissues. To date, however, very little is understood about the vulnerability of terminally-differentiated skeletal muscle fibers and the resident mononuclear cells that populate the interstitial microenvironment of skeletal muscle to senescence, and their contribution to the onset and progression of skeletal muscle loss and dysfunction with aging. Scientific advances in these areas have the potential to highlight new therapeutic approaches to optimize late-life muscle health. To this end, this review highlights the current evidence and the key questions that need to be addressed to advance the field's understanding of cellular senescence as a mediator of skeletal muscle aging and the potential for emerging senescent cell-targeting therapies to counter age-related deficits in muscle mass, strength, and function. This article is part of the Special Issue - Senolytics - Edited by Joao Passos and Diana Jurk.
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Affiliation(s)
- Davis A Englund
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA; Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, MN, USA
| | - Xu Zhang
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA; Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, MN, USA
| | - Zaira Aversa
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA; Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, MN, USA
| | - Nathan K LeBrasseur
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA; Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, MN, USA; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA.
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15
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Du X, Li H, Nuerjiang M, Shi S, Kong B, Liu Q, Xia X. Application of ultrasound treatment in chicken gizzards tenderization: Effects on muscle fiber and connective tissue. Ultrason Sonochem 2021; 79:105786. [PMID: 34634549 PMCID: PMC8515298 DOI: 10.1016/j.ultsonch.2021.105786] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 09/26/2021] [Accepted: 10/06/2021] [Indexed: 05/31/2023]
Abstract
The tenderizing effect of different ultrasound treatments on the characteristics of muscle fibers and connective tissue of chicken gizzard was investigated. It could be concluded that the shear force and muscle fiber diameter of the sample treated with ultrasound for 500 W/30 min were decreased by 27.1% and 26.2%, respectively, while the myofibril fragmentation index (MFI) was increased by 238.1% than the control. More importantly, the contents of hydroxylysine pyridinoline and lysine pyridinoline of the samples treated with ultrasound for 500 W/30 min were 23.1% and 40.5% lower than those of the control. Tenderizing effect of 500 W/30 min sample on thermal stability was verified from the decrease in transition temperature (Tmax) (10.7%) and enthalpy (ΔH) (21.7%) of collage compared with the control. In general, proper ultrasound treatment could effectively improve the tenderness of gizzard, and 500 W/30 min had the best tenderization effect. Therefore, the treatment of ultrasound was considered as a promising and efficient technique in meat processing, especially for the meat tenderization.
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Affiliation(s)
- Xin Du
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Haijing Li
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Maheshati Nuerjiang
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Shuo Shi
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Baohua Kong
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Qian Liu
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Xiufang Xia
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
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16
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Zhang Y, Pang X, Yang Y, Yan S. Effect of calcium ion on the morphology structure and compression elasticity of muscle fibers from honeybee abdomen. J Biomech 2021; 127:110652. [PMID: 34358879 DOI: 10.1016/j.jbiomech.2021.110652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 07/21/2021] [Accepted: 07/25/2021] [Indexed: 10/20/2022]
Abstract
Muscle contraction activated by calcium ion is the key to reveal that honeybee abdomen can achieve various physiological activities through flexible exercises and contributes to a powerful mechanical function of muscle fibers. To investigate the stimulating effect of calcium ion on muscle fibers of honeybee abdomen, atomic force microscopy was used to measure the morphology structure and mechanical properties of muscle fibers from honeybee abdomen in different calcium ion solutions. The periodic morphology structure of muscle fibers stimulated by different calcium ion concentration changed greatly, and the sarcomere length contracted from 6.53 μm to 4.29 μm as the calcium ion concentration increased from 0.11 mM to 10 mM. The mechanical measurement showed that the elastic modulus of Z-line reached the maximum, followed by M-line, overlap zone and I-band in sequence at the same calcium ion concentration, and was approximately 3.636, 2.450, 2.284, 2.748 times that of I-band from 0.11 mM to 10 mM calcium ion concentration. Combining the experimental analysis, the calcium ion threshold range was obtained based on the response surface method. This work adequately elucidates biological structure and biomechanics of muscle fibers from honeybee abdomen and could provide reference for other similar muscle system.
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Affiliation(s)
- Yuling Zhang
- Division of Intelligent and Biomechanical Systems, State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, PR China
| | - Xu Pang
- School of Engineering and Technology, China University of Geosciences (Beijing), 100083 Beijing, PR China
| | - Yunqiang Yang
- School of Engineering and Technology, China University of Geosciences (Beijing), 100083 Beijing, PR China
| | - Shaoze Yan
- Division of Intelligent and Biomechanical Systems, State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, PR China.
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17
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Tamamitsu AM, Nakagama Y, Domoto Y, Yoshida K, Ogawa S, Hirono K, Shindo T, Ogawa Y, Nakano K, Asakai H, Hirata Y, Matsui H, Inuzuka R. Poor Myocardial Compaction in a Patient with Recessive MYL2 Myopathy. Int Heart J 2021; 62:445-447. [PMID: 33731536 DOI: 10.1536/ihj.20-639] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Recessive mutations in the Myosin regulatory light chain 2 (MYL2) gene are the cause of an infantile-onset myopathy, associated with fatal myocardial disease of variable macromorphology. We here present the first Japanese family affected with recessive MYL2 myopathy. Affected siblings manifested typical features and the proband's autopsy findings were compatible with the diagnosis of noncompaction cardiomyopathy. The rapidly progressive clinical course of this recessive MYL2 cardiomyopathy highlights the crucial role of c-terminal tails in MYL2 protein in maintaining cardiac morphology and function.
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Affiliation(s)
| | - Yu Nakagama
- Department of Pediatrics, Graduate School of Medicine, The University of Tokyo.,Department of Parasitology, Graduate School of Medicine, Osaka City University
| | - Yukako Domoto
- Department of Pathology, Graduate School of Medicine, The University of Tokyo
| | - Kenichi Yoshida
- Department of Pathology, Graduate School of Medicine, The University of Tokyo
| | - Seishi Ogawa
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University
| | - Keiichi Hirono
- Department of Pediatrics, Graduate School of Medicine, University of Toyama
| | - Takahiro Shindo
- Division of Cardiology, National Center for Child Health and Development
| | - Yosuke Ogawa
- Department of Pediatrics, Graduate School of Medicine, The University of Tokyo
| | - Katsutoshi Nakano
- Department of Pediatrics, Graduate School of Medicine, The University of Tokyo
| | - Hiroko Asakai
- Department of Pediatrics, Graduate School of Medicine, The University of Tokyo
| | - Yoichiro Hirata
- Department of Pediatrics, Kitasato University School of Medicine
| | - Hikoro Matsui
- Department of Pediatrics, Graduate School of Medicine, The University of Tokyo
| | - Ryo Inuzuka
- Department of Pediatrics, Graduate School of Medicine, The University of Tokyo
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18
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Hu C, Yang Y, Chen M, Hao X, Wang S, Yang L, Yin Y, Tan C. A maternal high-fat/low-fiber diet impairs glucose tolerance and induces the formation of glycolytic muscle fibers in neonatal offspring. Eur J Nutr 2021; 60:2709-18. [PMID: 33386892 DOI: 10.1007/s00394-020-02461-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 12/07/2020] [Indexed: 12/19/2022]
Abstract
PURPOSE In our previous study, the maternal high-fat/low-fiber (HF-LF) diet was suggested to induce metabolic disorders and placental dysfunction of the dam, but the effects of this diet on glucose metabolism of neonatal offspring remain largely unknown. Here, a neonatal pig model was used to evaluate the effects of maternal HF-LF diet during pregnancy on glucose tolerance, transition of skeletal muscle fiber types, and mitochondrial function in offspring. METHODS A total of 66 pregnant gilts (Guangdong Small-ear Spotted pig) at day 60 of gestation were randomly divided into two groups: control group (CON group; 2.86% crude fat, 9.37% crude fiber), and high-fat/low-fiber diet group (HF-LF group; 5.99% crude fat, 4.13% crude fiber). RESULTS The maternal HF-LF diet was shown to impair the glucose tolerance of neonatal offspring, downregulate the protein level of slow-twitch fiber myosin heavy chain I (MyHC I), and upregulate the protein levels of fast-twitch fiber myosin heavy chain IIb (MyHC IIb) and IIx (MyHC IIx) in soleus muscle. Additionally, compared with the CON group, the HF-LF offspring showed inhibition of insulin signaling pathway and decrease in mitochondrial function in liver and soleus muscle. CONCLUSION Maternal HF-LF diet during pregnancy impairs glucose tolerance, induces the formation of glycolytic muscle fibers, and decreases the hepatic and muscular mitochondrial function in neonatal piglets.
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Straight CR, Voigt TB, Jala AV, Chase JD, Ringham OR, Ades PA, Toth MJ, Miller MS. Quadriceps Lipid Content Has Sex-Specific Associations With Whole-Muscle, Cellular, and Molecular Contractile Function in Older Adults. J Gerontol A Biol Sci Med Sci 2020; 74:1879-1886. [PMID: 30428006 DOI: 10.1093/gerona/gly235] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Indexed: 12/25/2022] Open
Abstract
Increased adiposity is associated with reduced skeletal muscle function in older adults, but the mechanisms underlying this relationship remain unclear. To explore whether skeletal muscle properties track with adiposity, whole-muscle, cellular, and molecular function were examined in relation to adiposity measured at various anatomical levels in healthy older (60-80 years) men and women. Although women had greater absolute and relative body and thigh fat than men, quadriceps muscle attenuation, an index of intramuscular lipid content, was similar between sexes. At the whole-muscle level, greater quadriceps attenuation was associated with reduced knee extensor function in women, but not men. In women, decreased myosin heavy chain I and IIA fiber-specific force was associated with higher intramuscular lipid content, which may be explained, in part, by the reduced myofilament lattice stiffness found in myosin heavy chain IIA fibers. Longer myosin attachment times in myosin heavy chain I fibers from men and women were associated with greater amounts of adipose tissue, suggesting that fat deposits lead to slower myosin-actin cross-bridge kinetics. Our results indicate greater quantities of adipose tissue alter myofilament properties and cross-bridge kinetics, which may partially explain the adiposity-induced decrements in single-fiber and whole-muscle function of older adults, especially women.
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Affiliation(s)
- Chad R Straight
- Department of Kinesiology, School of Public Health and Health Sciences, University of Massachusetts, Amherst
| | - Thomas B Voigt
- Department of Medicine, University of Vermont, Burlington
| | - Anudeep V Jala
- Department of Kinesiology, School of Public Health and Health Sciences, University of Massachusetts, Amherst
| | - John D Chase
- Department of Kinesiology, School of Public Health and Health Sciences, University of Massachusetts, Amherst
| | - Olivia R Ringham
- Department of Kinesiology, School of Public Health and Health Sciences, University of Massachusetts, Amherst
| | - Philip A Ades
- Department of Medicine, University of Vermont, Burlington
| | - Michael J Toth
- Department of Medicine, University of Vermont, Burlington
- Department of Molecular Physiology and Biophysics, University of Vermont, Burlington
- Department of Orthopaedics and Rehabilitation, University of Vermont, Burlington
| | - Mark S Miller
- Department of Kinesiology, School of Public Health and Health Sciences, University of Massachusetts, Amherst
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Qin X, Zhang T, Cao Y, Deng B, Zhang J, Zhao J. Effects of dietary sea buckthorn pomace supplementation on skeletal muscle mass and meat quality in lambs. Meat Sci 2020; 166:108141. [PMID: 32302933 DOI: 10.1016/j.meatsci.2020.108141] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 04/05/2020] [Accepted: 04/06/2020] [Indexed: 02/06/2023]
Abstract
The aim of the present trial was to evaluate the effects of dietary sea buckthorn pomace (SBP) supplementation on muscle mass, meat nutritional value and quality of lambs. The results showed that dietary 16% SBP supplementation increased muscle mass and altered muscle fiber size distribution. Both nutritional compositions, including crude protein, moisture and ash, and lamb meat quality, including pH, color and cooking loss were not affected by SBP supplementation. Importantly, crude fat content was elevated, and shear force was decreased in Longissimus thoracis (LT) when lambs were fed the SBP containing diet. Moreover, the total antioxidative capacity in LT and the HDL content in serum were elevated in SBP feed lambs. Dietary SBP supplementation increased the Akt/mTOR signaling activity, and downregulated myostatin expression. Taken together, these data suggested that SBP could be used as a feed ingredient for lamb meat production by increasing muscle mass and improving tenderness, water holding capacity and antioxidative capacity of resulting meat.
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Affiliation(s)
- Xuze Qin
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Ting Zhang
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Yuxin Cao
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Buhao Deng
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Jianxin Zhang
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China.
| | - Junxing Zhao
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China.
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Kim YJ, Kim HJ, Lee WJ, Seong JK. A comparison of the metabolic effects of treadmill and wheel running exercise in mouse model. Lab Anim Res 2020; 36:3. [PMID: 32206610 PMCID: PMC7081706 DOI: 10.1186/s42826-019-0035-8] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 12/27/2019] [Indexed: 02/02/2023] Open
Abstract
Aerobic exercise is well known to have a positive impact on body composition, muscle strength, and oxidative capacity. In animal model, both treadmill and wheel running exercise modalities have become more popular, in order to study physiological adaptation associated with aerobic exercise. However, few studies have compared physiological adaptations in response to either treadmill exercise (TE), or voluntary wheel running exercise (WE). We therefore compared each exercise intervention on body composition and oxidative markers in male C57BL/6 N mice. The total distance run was remarkably higher in the WE group than in the TE group. Both forms of exercise resulted in the reduction of body weight, fat mass, and adipocyte size. However, the average for grip strength of WE was higher than for control and TE. Interestingly, PGC-1α expression was increased in the gastrocnemius (glycolytic-oxidative) and soleus (oxidative) muscle of TE group, whereas WE showed a significant effect on PGC-1α expression only in the soleus muscle. However, muscle fiber type composition was not shifted remarkably in either type of exercise. These results suggest that TE and WE may exert beneficial effects in suppressing metabolic risks in mouse model through attenuating body weight, fat mass, size, and increase in mitochondria biogenesis marker, PGC-1α.
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Affiliation(s)
- Youn Ju Kim
- 1Laboratory of Developmental Biology and Genomics, BK21 Program for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea.,2The Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, 08826 Republic of Korea.,3Korea Mouse Phenotyping Center (KMPC), Seoul National University, 08826 Seoul, Republic of Korea
| | - Hye Jin Kim
- 2The Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, 08826 Republic of Korea.,3Korea Mouse Phenotyping Center (KMPC), Seoul National University, 08826 Seoul, Republic of Korea
| | - Won Jun Lee
- 4Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, 03722 South Korea
| | - Je Kyung Seong
- 1Laboratory of Developmental Biology and Genomics, BK21 Program for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea.,2The Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, 08826 Republic of Korea.,3Korea Mouse Phenotyping Center (KMPC), Seoul National University, 08826 Seoul, Republic of Korea.,5Interdisciplinary Program for Bioinformatics, Program for Cancer Biology, BIO-MAX/N-Bio Institute, Seoul National University, 08826 Seoul, Republic of Korea
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22
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Agten A, Stevens S, Verbrugghe J, Timmermans A, Vandenabeele F. Biopsy samples from the erector spinae of persons with nonspecific chronic low back pain display a decrease in glycolytic muscle fibers. Spine J 2020; 20:199-206. [PMID: 31563580 DOI: 10.1016/j.spinee.2019.09.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 09/24/2019] [Accepted: 09/24/2019] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT Low back pain (LBP) in Western Europe was classified as having the highest disability and overall burden among 291 studied conditions. For an extensive period of time, evidence related to morphological changes (eg, atrophy and fat infiltration) of the paraspinal muscles in persons with LBP has accumulated. Despite this evidence, there is limited knowledge on muscle fiber type composition of these muscles, and their relation to LBP. PURPOSE The aim of the study is to investigate differences in muscle fiber type composition between persons with nonspecific chronic low back pain (NSCLBP) and healthy controls for the lumbar erector spinae (ES) and multifidus (MF) muscle. STUDY DESIGN AND SETTING A cross-sectional study took place in the REVAL Rehabilitation Research Center, Hasselt University, Diepenbeek, Belgium. PATIENT SAMPLE Twenty persons with NSCLBP (age: 44.5±7.42) and 18 healthy controls (age: 39.89±7.90) participated in this study. OUTCOME MEASURES The primary outcome measure was paraspinal muscle fiber type composition. Secondary outcomes consisted of physiologic measures (maximal aerobic capacity and back muscle strength) and functional measures (activity level). METHODS Biopsy samples were taken from the lumbar ES and MF muscle at the L4 spinal level. These samples were stained using immunofluorescent antibodies against myosin heavy chains. In each sample, number and size (CSA) of type I, I/IIa, IIa, IIa/x, and IIx muscle fibers were quantified. From these data the relative cross-sectional fiber areas (RCSA) were calculated. To analyze differences in fiber type composition between healthy persons and persons with NSCLBP, a repeated measurements analysis of variance was used. Secondary outcome measures were analyzed using a Student's t test, and Wilcoxon test. This study was supported by the research fund of Hasselt University without potential conflict of interest. RESULTS There were no significant differences between both groups regarding anthropometric data. There were no significant between group differences for CSA in the ES. Persons with NSCLBP displayed a nonsignificant (p=.0978) increase in the number of type I muscle fibers, and a significant decrease (p=.0019) in the number of type IIx muscle fibers in the ES muscle. Persons with NSCLBP also displayed a trend toward a higher (p=.0596) RCSA for type I fibers and a significantly lower RCSA for type IIx fibers (p=.0411). There were no significant between group differences within the MF. Regarding the secondary outcome measures, there was a significant between group difference in activity level (p=.0004) and isokinetic back muscle strength (p=.0342). CONCLUSIONS This is the first study to examine muscle fiber type characteristics in both the ES and MF muscle of persons with NSCLBP. Based on muscle fiber characteristics, the paraspinal muscles of persons with NSCLBP seems to display a larger oxidative potential based on an increase of the number type I fibers at the expense of type IIx glycolytic fibers.
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Affiliation(s)
- Anouk Agten
- Hasselt University, Rehabilitation Research Center, Faculty of Rehabilitation Sciences and Physiotherapy, Agoralaan building A, 3590 Diepenbeek, Belgium.
| | - Sjoerd Stevens
- Hasselt University, Rehabilitation Research Center, Faculty of Rehabilitation Sciences and Physiotherapy, Agoralaan building A, 3590 Diepenbeek, Belgium
| | - Jonas Verbrugghe
- Hasselt University, Rehabilitation Research Center, Faculty of Rehabilitation Sciences and Physiotherapy, Agoralaan building A, 3590 Diepenbeek, Belgium
| | - Annick Timmermans
- Hasselt University, Rehabilitation Research Center, Faculty of Rehabilitation Sciences and Physiotherapy, Agoralaan building A, 3590 Diepenbeek, Belgium
| | - Frank Vandenabeele
- Hasselt University, Rehabilitation Research Center, Faculty of Rehabilitation Sciences and Physiotherapy, Agoralaan building A, 3590 Diepenbeek, Belgium
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Wang ZM, Leng X, Messi ML, Choi SJ, Marsh AP, Nicklas B, Delbono O. Relationship of Physical Function to Single Muscle Fiber Contractility in Older Adults: Effects of Resistance Training With and Without Caloric Restriction. J Gerontol A Biol Sci Med Sci 2019; 74:412-419. [PMID: 29546320 DOI: 10.1093/gerona/gly047] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Previous studies support beneficial effects of both resistance exercise training (RT) and caloric restriction (CR) on skeletal muscle strength and physical performance. The goal of this study was to determine the effects of adding CR to RT on single-muscle fiber contractility responses to RT in older overweight and obese adults. METHODS We analyzed contractile properties in 1,253 single myofiber from muscle biopsies of the vastus lateralis, as well as physical performance and thigh muscle volume, in 31 older (65-80 years), overweight or obese (body mass index = 27-35 kg/m2) men (n = 19) and women (n = 12) who were randomly assigned to a standardized, progressive RT intervention with CR (RT+CR; n = 15) or without CR (RT; n = 16) for 5 months. RESULTS Both interventions evoked an increase in force normalized to cross-sectional area (CSA), in type-I and type-II fibers and knee extensor quality. However, these improvements were not different between intervention groups. In the RT group, changes in total thigh fat volume inversely correlated with changes in type-II fiber force (r = -.691; p = .019). Within the RT+CR group, changes in gait speed correlated positively with changes in type-I fiber CSA (r = .561; p = .030). In addition, increases in type-I normalized fiber force were related to decreases in thigh intermuscular fat volume (r = -0.539; p = .038). CONCLUSION Single muscle fiber force and knee extensor quality improve with RT and RT+CR; however, CR does not enhance improvements in single muscle fiber contractility or whole muscle in response to RT in older overweight and obese men and women.
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Affiliation(s)
- Zhong-Min Wang
- Department of Internal Medicine, Section on Gerontology and Geriatric Medicine, North Carolina
- J Paul Sticht Center for Healthy Aging and Alzheimer's Prevention, North Carolina
| | - Xiaoyan Leng
- Department of Biostatistical Sciences, Division of Public Health Sciences, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - María Laura Messi
- Department of Internal Medicine, Section on Gerontology and Geriatric Medicine, North Carolina
- J Paul Sticht Center for Healthy Aging and Alzheimer's Prevention, North Carolina
| | - Seung J Choi
- Department of Internal Medicine, Section on Gerontology and Geriatric Medicine, North Carolina
| | - Anthony P Marsh
- Department of Health and Exercise Science, Wake Forest University, Winston-Salem, North Carolina
| | - Barbara Nicklas
- Department of Internal Medicine, Section on Gerontology and Geriatric Medicine, North Carolina
- J Paul Sticht Center for Healthy Aging and Alzheimer's Prevention, North Carolina
- Department of Health and Exercise Science, Wake Forest University, Winston-Salem, North Carolina
| | - Osvaldo Delbono
- Department of Internal Medicine, Section on Gerontology and Geriatric Medicine, North Carolina
- J Paul Sticht Center for Healthy Aging and Alzheimer's Prevention, North Carolina
- The Neuroscience Program, Wake Forest School of Medicine, Winston-Salem, North Carolina
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24
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Gan M, Shen L, Liu L, Guo Z, Wang S, Chen L, Zheng T, Fan Y, Tan Y, Jiang D, Li X, Zhang S, Zhu L. miR-222 is involved in the regulation of genistein on skeletal muscle fiber type. J Nutr Biochem 2019; 80:108320. [PMID: 32361609 DOI: 10.1016/j.jnutbio.2019.108320] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 10/05/2019] [Accepted: 11/27/2019] [Indexed: 12/18/2022]
Abstract
In skeletal muscle, the composition of the fiber types has a profound impact on athletic performance, such as endurance or strength output. The proportions of muscle fiber types have also been associated with certain diseases, including dyskinesia, obesity and insulin resistance. Genistein, a natural estrogen, has been demonstrated to regulate fatty acid oxidation and insulin sensitivity in skeletal muscle. However, it is unknown whether genistein can regulate skeletal muscle fiber types. Furthermore, the mechanism of its effect on skeletal muscle energy metabolism is not entirely clear. In this study, in vivo and in vitro experiments were used to explore the effect of genistein on the muscle fiber-type transitions and muscle metabolism. The results indicated that genistein not only promotes skeletal muscle development but increases the expression of slow muscle fibers in mice as well. It was also demonstrated that genistein altered the ratios of fiber type and promoted mitochondrial biogenesis in C2C12 myoblasts. Interestingly, the expression of miR-222 was decreased by genistein, and it was demonstrated that this microRNA targets the PGC1α gene. In C2C12 myoblasts, miR-222 appears to regulate fiber type conversion and mitochondrial biogenesis. However, this function was significantly reduced following genistein treatment. These results suggest that miR-222 may be involved in the regulation of genistein on skeletal muscle fiber and muscle metabolism, and genistein may be used to improve muscle health.
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Affiliation(s)
- Mailin Gan
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Linyuan Shen
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Lin Liu
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Zhixian Guo
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Shujie Wang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Lei Chen
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Ting Zheng
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Yuan Fan
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Ya Tan
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Dongmei Jiang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Xuewei Li
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Shunhua Zhang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China.
| | - Li Zhu
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China.
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Sekikawa K, Moriyama H, Miyaso H, Osada T, Ueno R, Otsuka N, Itoh M. Evaluation of Yanagihara facial nerve grading system based on a muscle fiber analysis of human facial muscles. Eur Arch Otorhinolaryngol 2019; 276:2055-60. [PMID: 31076880 DOI: 10.1007/s00405-019-05462-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 05/03/2019] [Indexed: 11/27/2022]
Abstract
Purpose We morphometrically analyzed human facial muscles, and evaluated the Yanagihara facial nerve grading system using our data. Methods We used 15 types of human facial muscle, 2 types of masticatory muscle and 2 types of skeletal muscle. The materials were obtained from 11 Japanese male cadavers aged 43–86 years. We counted the muscle fibers and measured the transverse area of the muscle fibers (TAMF), and then calculated the number of muscle fibers (NMF) per mm2 and the average TAMF. Results We found a significant correlation between average TAMF and NMF (r = − 0.70; p < 0.01). We classified facial muscles into three types based on the correlational results. Type A had a low average TAMF and high NMF. Type C had a high average TAMF and low NMF. Masticatory and skeletal muscles were characterized as Type C. Type B was intermediate between Types A and C. Conclusions Pathological changes in the facial muscles in facial nerve palsy seem to vary according to the type of facial muscle, because each facial muscle has a unique fiber-type composition. As the nine discrete facial expressive states evaluated in the Yanagihara system involve all three facial muscle types of our classification, the Yanagihara system is an outstanding system for grading facial nerve palsy in terms of the facial muscle morphology.
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Tsukamoto M, Wang KY, Tasaki T, Murata Y, Okada Y, Yamanaka Y, Nakamura E, Yamada S, Izumi H, Zhou Q, Azuma K, Sasaguri Y, Kohno K, Sakai A. Findings as a starting point to unravel the underlying mechanisms of in vivo interactions involving Wnt10a in bone, fat and muscle. Bone 2019; 120:75-84. [PMID: 30315998 DOI: 10.1016/j.bone.2018.10.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 10/08/2018] [Accepted: 10/08/2018] [Indexed: 12/15/2022]
Abstract
Wnt10a is a member of the WNT family. Although deficiency of this gene causes symptoms related to teeth, hair, nails, and skin, we recently demonstrated a new phenotype of Wnt10a knockout (KO) mice involving bone and fat. The in vivo effect of the Wnt10a gene on bone and fat is unclear, and the relationship between bone/fat and muscle in Wnt10a signaling is also interesting. We aimed to evaluate the tissue changes in Wnt10a KO mice compared to wild-type mice and show the findings as a starting point to unravel the underlying mechanisms of in vivo interactions involving Wnt10a in bone, fat and muscle. Trabecular bone loss in the lower limbs of Wnt10a mice and decreased bone mineralization were observed. The adipose tissue in bone marrow was also decreased, and adipocyte differentiation was reduced. The body fat mass in Wnt10a KO mice was decreased, and white adipocytes in subcutaneous fat were converted to beige adipocytes. The muscle weight of the lower limbs was not decreased despite trabecular bone loss, but Gdf8/myostatin expression was reduced in the subcutaneous fat and gastrocnemius muscles of Wnt10a KO mice. Thus, in vivo deletion of Wnt10a inhibited osteogenic activity, promoted beige adipogenesis of white adipocytes and maintained muscle mass. These results suggest that regulation of Gdf8 by Wnt10a may help maintain the muscle mass of Wnt10a KO mice. This study was the first to histologically evaluate the bone, fat and muscle phenotypes of Wnt10a KO mice. The results of this study, which were obtained by investigating the three tissues together, could influence the understanding of in vivo interactions involving the Wnt10a gene.
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Affiliation(s)
- Manabu Tsukamoto
- Department of Orthopaedic Surgery, School of Medicine, University of Occupational and Environmental Health University, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan
| | - Ke-Yong Wang
- Shared-Use Research Center, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan.
| | - Takashi Tasaki
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan
| | - Yoichi Murata
- Department of Orthopaedic Surgery, School of Medicine, University of Occupational and Environmental Health University, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan
| | - Yasuaki Okada
- Department of Orthopaedic Surgery, School of Medicine, University of Occupational and Environmental Health University, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan
| | - Yoshiaki Yamanaka
- Department of Orthopaedic Surgery, School of Medicine, University of Occupational and Environmental Health University, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan
| | - Eiichiro Nakamura
- Department of Orthopaedic Surgery, School of Medicine, University of Occupational and Environmental Health University, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan
| | - Sohsuke Yamada
- Department of Pathology and Laboratory Medicine, Kanazawa Medical University, 1-1 Uchinada, Ishikawa 920-0293, Japan
| | - Hiroto Izumi
- Department of Occupational Pneumology, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan
| | - Qian Zhou
- Department of Anatomy, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan
| | - Kagaku Azuma
- Department of Anatomy, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan
| | - Yasuyuki Sasaguri
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan; Laboratory of Pathology, Fukuoka Tokushukai Hospital, Fukuoka 816-0864, Japan
| | | | - Akinori Sakai
- Department of Orthopaedic Surgery, School of Medicine, University of Occupational and Environmental Health University, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan
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27
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Carr JC, Stock MS, Hernandez JM, Ortegon JR, Mota JA. Additional insight into biarticular muscle function: The influence of hip flexor fatigue on rectus femoris activity at the knee. J Electromyogr Kinesiol 2018; 42:36-43. [PMID: 29940493 DOI: 10.1016/j.jelekin.2018.06.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 05/15/2018] [Accepted: 06/18/2018] [Indexed: 11/29/2022] Open
Abstract
We evaluated the compensatory adaptations in muscle regionalization and synergist activity after fatiguing a biarticular muscle at one joint with different muscle lengths. Eleven men (mean ± SD age = 23 ± 3 years) performed 50 maximal concentric isokinetic contractions of the dominant hip flexors on two occasions. For one trial, the knee joint was fully extended. For the other, the knee joint was fixed at 70°. Maximal voluntary contractions of the knee extensors were performed immediately before and after the hip flexion fatigue protocol while bipolar surface electromyographic signals were detected from the vastus lateralis and at five points along the length of the rectus femoris. Regardless of knee joint angle during the hip flexion fatigue protocol, knee extension peak torque was unchanged following hip flexion fatigue. Electromyographic amplitude for the vastus lateralis (p = .047, η2 = .338) and rectus femoris (p < .001, η2 = .667) showed main effects for time, indicating higher and lower post-fatigue values, respectively. There was no evidence of region-specific rectus femoris adaptations during extension at the knee following fatigue of the hip flexors. These data suggest that synergistic adaptations were involved in maintaining knee extension peak torque following hip flexion fatigue.
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Affiliation(s)
- Joshua C Carr
- Biophysics Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman, OK, USA
| | - Matt S Stock
- Applied Physiology Laboratory, School of Kinesiology and Physical Therapy, University of Central Florida, Orlando, FL, USA.
| | | | | | - Jacob A Mota
- Neuromuscular Research Laboratory, Department of Exercise and Sport Science, University of North Carolina-Chapel Hill, Chapel Hill, NC, USA
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Natsume T, Ozaki H, Kakigi R, Kobayashi H, Naito H. Effects of training intensity in electromyostimulation on human skeletal muscle. Eur J Appl Physiol 2018; 118:1339-1347. [PMID: 29679248 DOI: 10.1007/s00421-018-3866-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 04/13/2018] [Indexed: 11/26/2022]
Abstract
PURPOSE High-intensity neuromuscular electrical stimulation (NMES) training can induce muscle hypertrophy at the whole muscle and muscle fiber levels. However, whether low-intensity NMES training has a similar result is unknown. This study aimed to investigate whether low-intensity NMES training could elicit muscle hypertrophy at the whole muscle and muscle fiber levels in the human skeletal muscle. METHODS Eight untrained young males were subjected to 18 min of unilateral NMES training for 8 weeks. One leg received NMES at maximal tolerable intensity (HIGH); the other leg received NMES at an intensity half of that in the HIGH condition (LOW). Quadriceps muscle thickness (MT), muscle fiber cross-sectional area (CSA), and knee extension strength were measured before and after the training period. RESULTS The average training intensity throughout the intervention period in the HIGH and LOW conditions were 62.5 ± 4.6% maximal voluntary contraction (MVC) and 32.6 ± 2.6% MVC, respectively. MT, CSA, and muscle strength increased in both exercise conditions (p < 0.05); however, training effects in the LOW condition were lower than those in the HIGH condition (p < 0.05). The average training intensity showed a positive correlation with percent changes in muscle strength (r = 0.797, p = 0.001), MT (r = 0.876, p = 0.001), type I fiber CSA (r = 0.730, p = 0.01), and type II fiber CSA (r = 0.899, p = 0.001). CONCLUSIONS Low-intensity NMES could increase MT, muscle fiber CSA, and muscle strength in healthy human skeletal muscles. However, the magnitude of increase is lower in low-intensity than in high-intensity NMES training.
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Affiliation(s)
- Toshiharu Natsume
- Institute of Health and Sports Science & Medicine, Juntendo University, 1-1 Hirakagakuendai, Inzai, Chiba, 270-1695, Japan.
| | - Hayao Ozaki
- Graduate School of Health and Sports Science, Juntendo University, 1-1 Hirakagakuendai, Inzai, Chiba, 270-1695, Japan
| | - Ryo Kakigi
- School of Medicine, Juntendo University, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan
| | - Hiroyuki Kobayashi
- Department of General Medicine, Mito Medical Center, Tsukuba University Hospital, 3-2-7 Miyamachi, Mito, Ibaraki, 310-0015, Japan
| | - Hisashi Naito
- Institute of Health and Sports Science & Medicine, Juntendo University, 1-1 Hirakagakuendai, Inzai, Chiba, 270-1695, Japan
- Graduate School of Health and Sports Science, Juntendo University, 1-1 Hirakagakuendai, Inzai, Chiba, 270-1695, Japan
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Godlewska-Hammel E, Büschges A, Gruhn M. Fiber-type distribution in insect leg muscles parallels similarities and differences in the functional role of insect walking legs. J Comp Physiol A Neuroethol Sens Neural Behav Physiol 2017; 203:773-790. [PMID: 28597315 DOI: 10.1007/s00359-017-1190-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 04/26/2017] [Accepted: 05/30/2017] [Indexed: 11/30/2022]
Abstract
Previous studies have demonstrated that myofibrillar ATPase (mATPase) enzyme activity in muscle fibers determines their contraction properties. We analyzed mATPase activities in muscles of the front, middle and hind legs of the orthopteran stick insect (Carausius morosus) to test the hypothesis that differences in muscle fiber types and distributions reflected differences in their behavioral functions. Our data show that all muscles are composed of at least three fiber types, fast, intermediate and slow, and demonstrate that: (1) in the femoral muscles (extensor and flexor tibiae) of all legs, the number of fast fibers decreases from proximal to distal, with a concomitant increase in the number of slow fibers. (2) The swing phase muscles protractor coxae and levator trochanteris, have smaller percentages of slow fibers compared to the antagonist stance muscles retractor coxae and depressor trochanteris. (3) The percentage of slow fibers in the retractor coxae and depressor trochanteris increases significantly from front to hind legs. These results suggest that fiber-type distribution in leg muscles of insects is not identical across leg muscles but tuned towards the specific function of a given muscle in the locomotor system.
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Affiliation(s)
- Elzbieta Godlewska-Hammel
- Department for Animal Physiology, Biocenter Cologne, Zoological Institute, Zülpicher Strasse 47b, 50674, Cologne, Germany
| | - Ansgar Büschges
- Department for Animal Physiology, Biocenter Cologne, Zoological Institute, Zülpicher Strasse 47b, 50674, Cologne, Germany
| | - Matthias Gruhn
- Department for Animal Physiology, Biocenter Cologne, Zoological Institute, Zülpicher Strasse 47b, 50674, Cologne, Germany.
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30
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Wan H, Zhu J, Wu C, Zhou P, Shen Y, Lin Y, Xu S, Che L, Feng B, Li J, Fang Z, Wu. Transfer of β-hydroxy- β-methylbutyrate from sows to their offspring and its impact on muscle fiber type transformation and performance in pigs. J Anim Sci Biotechnol 2017; 8:2. [PMID: 28074127 DOI: 10.1186/s40104-016-0132-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Accepted: 12/06/2016] [Indexed: 12/27/2022] Open
Abstract
Background Previous studies suggested that supplementation of lactating sows with β-hydroxy-β-methylbutyrate (HMB) could improve the performance of weaning pigs, but there were little information in the muscle fiber type transformation of the offspring and the subsequent performance in pigs from weaning through finishing in response to maternal HMB consumption. The purpose of this study was to determine the effect of supplementing lactating sows with HMB on skeletal muscle fiber type transformation and growth of the offspring during d 28 and 180 after birth. A total of 20 sows according to their body weight were divided into the control (CON, n = 10) or HMB groups (HMB, n = 10). Sows in the HMB group were supplemented with β-hydroxy-β-methylbutyrate calcium (HMB-Ca) 2 g /kg feed during d 1 to 27 of lactation. After weaning, 48 mixed sex piglets were blocked by sow treatment and fed standard diets for post-weaning, growing, finishing periods. Growth performance was recorded during d 28 to 180 after birth. Pigs were slaughtered on d 28 (n = 6/treatment) and 180 (n = 6/treatment) postnatal, and the longissimus dorsi (LD) was collected, respectively. Results The HMB-fed sows during lactation showed increased HMB concentration (P < 0.05) in milk and LD of weaning piglets (P < 0.05). In addition, offsprings in HMB group had a higher finishing BW and lean percentage than did pigs in CON group (P < 0.05), meanwhile, compared with pigs from sows fed the CON diet, pigs from sows fed HMB diet showed higher type II muscle fiber cross-sectional area (CSA), elevated myosin heavy chain (MyHC) IIb and Sox6 mRNA, and fast-MyHC protein levels in LD (P < 0.05). Conclusions HMB supplemented to sow diets throughout lactation increases the levels of HMB in maternal milk and skeletal muscle of pigs during d 28 after birth and promotes subsequent performance of pigs between d 28 and 180 of age by enhancing glycolytic muscle fiber transformation.
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Spyrou LA, Agoras M, Danas K. A homogenization model of the Voigt type for skeletal muscle. J Theor Biol 2016; 414:50-61. [PMID: 27884495 DOI: 10.1016/j.jtbi.2016.11.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 11/12/2016] [Accepted: 11/18/2016] [Indexed: 10/20/2022]
Abstract
A three-dimensional constitutive model for skeletal muscle incorporating microstructural characteristics is developed and numerically implemented in a general purpose finite element program. The proposed model takes into account explicitly the volume fractions of muscle fibers and connective tissue by using the Voigt homogenization approach to bridge the different length scales of the muscle structure. The model is used to estimate the active and passive homogenized muscle response. Next, the model is validated by experimental data and periodic three-dimensional unit cell calculations comprising various fiber volume fractions and mechanical properties of the constituents. The model is found to be in very good agreement with both the experimental data and the finite element results for all the examined cases. The influence of fiber volume fraction and material properties of constituents on effective muscle response under several loading conditions is examined.
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Affiliation(s)
- L A Spyrou
- Institute for Research & Technology - Thessaly, Centre for Research & Technology Hellas (CERTH), 38333 Volos, Greece.
| | - M Agoras
- Department of Mechanical Engineering, University of Thessaly, 38334 Volos, Greece.
| | - K Danas
- LMS, CNRS, École Polytechnique, Université Paris-Saclay, 91128 Palaiseau, France.
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32
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Hu Z, Taylor DW, Reedy MK, Edwards RJ, Taylor KA. Structure of myosin filaments from relaxed Lethocerus flight muscle by cryo-EM at 6 Å resolution. Sci Adv 2016; 2:e1600058. [PMID: 27704041 PMCID: PMC5045269 DOI: 10.1126/sciadv.1600058] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 08/23/2016] [Indexed: 05/09/2023]
Abstract
We describe a cryo-electron microscopy three-dimensional image reconstruction of relaxed myosin II-containing thick filaments from the flight muscle of the giant water bug Lethocerus indicus. The relaxed thick filament structure is a key element of muscle physiology because it facilitates the reextension process following contraction. Conversely, the myosin heads must disrupt their relaxed arrangement to drive contraction. Previous models predicted that Lethocerus myosin was unique in having an intermolecular head-head interaction, as opposed to the intramolecular head-head interaction observed in all other species. In contrast to the predicted model, we find an intramolecular head-head interaction, which is similar to that of other thick filaments but oriented in a distinctly different way. The arrangement of myosin's long α-helical coiled-coil rod domain has been hypothesized as either curved layers or helical subfilaments. Our reconstruction is the first report having sufficient resolution to track the rod α helices in their native environment at resolutions ~5.5 Å, and it shows that the layer arrangement is correct for Lethocerus. Threading separate paths through the forest of myosin coiled coils are four nonmyosin peptides. We suggest that the unusual position of the heads and the rod arrangement separated by nonmyosin peptides are adaptations for mechanical signal transduction whereby applied tension disrupts the myosin heads as a component of stretch activation.
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Affiliation(s)
- Zhongjun Hu
- Institute of Molecular Biophysics, Florida State University, Tallahassee, FL 32306–4380, USA
| | - Dianne W. Taylor
- Institute of Molecular Biophysics, Florida State University, Tallahassee, FL 32306–4380, USA
| | - Michael K. Reedy
- Department of Cell Biology, Duke University Medical Center, Durham, NC 27607, USA
| | - Robert J. Edwards
- Department of Cell Biology, Duke University Medical Center, Durham, NC 27607, USA
| | - Kenneth A. Taylor
- Institute of Molecular Biophysics, Florida State University, Tallahassee, FL 32306–4380, USA
- Corresponding author.
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Suda EY, Gomes AA, Butugan MK, Sacco ICN. Muscle fiber conduction velocity in different gait phases of early and late-stage diabetic neuropathy. J Electromyogr Kinesiol 2016; 30:263-71. [PMID: 27567140 DOI: 10.1016/j.jelekin.2016.08.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Revised: 08/11/2016] [Accepted: 08/13/2016] [Indexed: 01/07/2023] Open
Abstract
We investigated the muscle fiber conduction velocity (MFCV) during gait phases of the lower limb muscles in individuals with various degrees of diabetic peripheral neuropathy (DPN). Forty-five patients were classified into severity degrees of DPN by a fuzzy model. The stages were absent (n=11), mild (n=14), moderate (n=11) and severe (n=9), with 10 matched healthy controls. While walking, all subjects had their sEMG (4 linear electrode arrays) recorded for tibialis anterior (TA), gastrocnemius medialis (GM), vastus lateralis (VL) and biceps femoris (BF). MFCV was calculated using a maximum likelihood algorithm with 30ms standard deviation Gaussian windows. In general, individuals in the earlier stages of DPN showed lower MFCV of TA, GM and BF, whilst individuals with severe DPN presented higher MFCV of the same muscles. We observed that mild patients already showed lower MFCV of TA at early stance and swing, and lower MFCV of BF at swing. All diabetic groups showed a markedly reduction in MFCV of VL, irrespective of DPN. Severe patients presented higher MFCV mainly in distal muscles, TA at early and swing phases and GM at propulsion and midstance. The absent group already showed MFCV of VL and GM reductions at the propulsion phase and of VL at early stance. Although MFCV changes were not as progressive as the DPN was, we clearly distinguished diabetic patients from controls, and severe patients from all others.
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Affiliation(s)
- Eneida Yuri Suda
- Laboratory of Biomechanics of Human Movement, Dept. Physical Therapy, Speech and Occupational Therapy, School of Medicine, University of Sao Paulo, Sao Paulo, Brazil
| | - Aline A Gomes
- Laboratory of Biomechanics of Human Movement, Dept. Physical Therapy, Speech and Occupational Therapy, School of Medicine, University of Sao Paulo, Sao Paulo, Brazil; Human Performance Laboratory, School of Physical Education and Physiotherapy, Federal University of Amazonas, Amazonas, Brazil
| | - Marco Kenji Butugan
- Laboratory of Biomechanics of Human Movement, Dept. Physical Therapy, Speech and Occupational Therapy, School of Medicine, University of Sao Paulo, Sao Paulo, Brazil
| | - Isabel C N Sacco
- Laboratory of Biomechanics of Human Movement, Dept. Physical Therapy, Speech and Occupational Therapy, School of Medicine, University of Sao Paulo, Sao Paulo, Brazil.
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Wu YN, Ren Y, Tsai LC, Gao F, Zhang LQ. In vivo simultaneous evaluations of sarcomere imaging and muscle fiber tension. J Biomech 2016; 49:797-801. [PMID: 26897646 DOI: 10.1016/j.jbiomech.2016.01.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 01/28/2016] [Accepted: 01/29/2016] [Indexed: 11/17/2022]
Abstract
Muscle fiber tension and sarcomere length play critical roles in regulating muscle functions and adaptations under pathological conditions. However, methods are lacking to quantify these two variables simultaneously in vivo. A novel force microscope was developed with the unique capabilities of estimating muscle fiber tension and acquiring sarcomere images simultaneously in vivo. The force microscope consisting of a custom microscopic imaging system and a force sensor was used to quantify in vivo sarcomere length, muscle fiber tension and stress of the tibialis cranialis muscle at plantar-flexed and dorsi-flexed positions from 11 rat hind limbs. Results showed that sarcomere images and fiber tension could be measured together in vivo with significantly higher muscle fiber tension and stress and longer sarcomere length at the plantar-flexed position when compared to their counterparts at the dorsi-flexed position. The fiber tension estimated using the force microscope had close agreement with the direct measurements of the fiber tension. The present force microscope with simultaneous characterizations of fiber tension and sarcomere imaging provides us a useful in vivo tool to investigate the roles of muscle tension in regulating sarcomere and muscle fiber functions under physiological and pathological conditions.
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Affiliation(s)
- Yi-Ning Wu
- Sensory Motor Performance Program, Rehabilitation Institute of Chicago, Chicago, IL, USA; Department of Physical Therapy, University of Massachusetts Lowell, Lowell, MA, USA
| | - Yupeng Ren
- Sensory Motor Performance Program, Rehabilitation Institute of Chicago, Chicago, IL, USA
| | - Liang-Ching Tsai
- Department of Physical Medicine & Rehabilitation, Northwestern University, Chicago, IL, USA; Department of Physical Therapy, Georgia State University, Atlanta, GA, USA
| | - Fan Gao
- Sensory Motor Performance Program, Rehabilitation Institute of Chicago, Chicago, IL, USA; Department of Health Care Sciences, University of Texas Southwestern, Dallas, TX, USA
| | - Li-Qun Zhang
- Sensory Motor Performance Program, Rehabilitation Institute of Chicago, Chicago, IL, USA; Department of Physical Medicine & Rehabilitation, Northwestern University, Chicago, IL, USA; Department of Orthopaedic Surgery, Northwestern University, Chicago, IL, USA; Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA(h)Department of Orthopaedic Surgery, Northshore University HealthSystem, Evanston, IL, USA; Department of Orthopaedic Surgery, Northshore University HealthSystem, Evanston, IL, USA.
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Gueugneau M, Coudy-Gandilhon C, Meunier B, Combaret L, Taillandier D, Polge C, Attaix D, Roche F, Féasson L, Barthélémy JC, Béchet D. Lower skeletal muscle capillarization in hypertensive elderly men. Exp Gerontol 2016; 76:80-8. [PMID: 26826452 DOI: 10.1016/j.exger.2016.01.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 01/14/2016] [Accepted: 01/25/2016] [Indexed: 11/16/2022]
Abstract
Aging strongly affects the skeletal muscle and is associated with microvascular dysfunctions. Age is also a primary risk factor for the metabolic syndrome, which is a cluster of metabolic and cardiovascular symptoms. Among the metabolic syndrome components, hypertension is the most prevalent in elderly subjects and has a central role in vascular alterations. Despite critical clinical outcomes, the effects of hypertension and metabolic syndrome on skeletal muscle capillarization have poorly been investigated during aging. In the present study, muscle biopsies from normotensive young (YO) and elderly (ELc) men, and elderly men with hypertension (EL-HT) or metabolic syndrome (EL-MS) were assessed for the number of capillaries around a fiber (CAF), capillary-to-fiber perimeter exchange (CFPE), length of contact to perimeter of fiber ratio (LC/PF), capillary tortuosity, and for extracellular matrix (ECM) embedding capillaries. As capillarization and muscle mitochondrial oxidative capacity may be associated, we also investigated cytochrome c oxidase (COX) content. Our findings indicate that capillarization and COX did not change between normotensive adult and old individuals. They further reveal that hypertension in elderly men is associated with reduced CAF (ELc: 5.2 ± 0.4, EL-HT: 4.1 ± 0.2, P<0.02 for type I fibers; ELc: 4.1 ± 0.2, EL-HT: 3.1 ± 0.3, P<0.03 for type IIA fibers), CFPE (ELc: 7.9 ± 0.7, EL-HT: 6.4 ± 0.4 capillaries/1000 μm, P<0.03 for type I fibers; ELc: 6.5 ± 0.4, EL-HT: 5.2 ± 0.4 capillaries/1000 μm, P<0.03 for type IIA fibers), LC/PF (ELc: 23.3 ± 1.2, EL-HT: 17.8 ± 0.6%, P<0.01 for type I fibers; ELc: 19.8 ± 1.1, EL-HT: 15.6 ± 0.8%, P<0.01 for type IIA fibers) and capillary tortuosity, and with ECM endomysium fibrosis. Capillary rarefaction also correlated with lower COX content in the old hypertensive muscle. No further modification occurred with metabolic syndrome in elderly men. Collectively, our results suggest that hypertension plays a central role in muscle capillarization during aging, and that the other components of metabolic syndrome do not make major additional changes in the aged skeletal muscle capillary network.
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Affiliation(s)
- Marine Gueugneau
- INRA, UMR1019, Unité de Nutrition Humaine, CRNH Auvergne, F-63122 Saint-Genès Champanelle, France; Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France
| | - Cécile Coudy-Gandilhon
- INRA, UMR1019, Unité de Nutrition Humaine, CRNH Auvergne, F-63122 Saint-Genès Champanelle, France; Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France
| | - Bruno Meunier
- INRA-VetAgro Sup, UMR1213, F-63122 Saint-Genès Champanelle, France
| | - Lydie Combaret
- INRA, UMR1019, Unité de Nutrition Humaine, CRNH Auvergne, F-63122 Saint-Genès Champanelle, France; Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France
| | - Daniel Taillandier
- INRA, UMR1019, Unité de Nutrition Humaine, CRNH Auvergne, F-63122 Saint-Genès Champanelle, France; Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France
| | - Cécile Polge
- INRA, UMR1019, Unité de Nutrition Humaine, CRNH Auvergne, F-63122 Saint-Genès Champanelle, France; Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France
| | - Didier Attaix
- INRA, UMR1019, Unité de Nutrition Humaine, CRNH Auvergne, F-63122 Saint-Genès Champanelle, France; Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France
| | - Frédéric Roche
- Service de Physiologie Clinique et de l'Exercice, CHU Nord, Faculté de Médecine Jacques Lisfranc, PRES de Lyon, Université Jean Monnet, F-42055 Saint-Etienne, France
| | - Léonard Féasson
- Unité de Myologie, Centre Référent Maladies Neuromusculaires Rares Rhône-Alpes, CHU de Saint-Etienne F-42055, France; Laboratoire de Physiologie de l'Exercice EA4338, Université Jean Monnet, Saint-Etienne F-42023, Université de Lyon, France; Université de Lyon, France
| | - Jean-Claude Barthélémy
- Service de Physiologie Clinique et de l'Exercice, CHU Nord, Faculté de Médecine Jacques Lisfranc, PRES de Lyon, Université Jean Monnet, F-42055 Saint-Etienne, France
| | - Daniel Béchet
- INRA, UMR1019, Unité de Nutrition Humaine, CRNH Auvergne, F-63122 Saint-Genès Champanelle, France; Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France.
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Liu X, Trakooljul N, Muráni E, Krischek C, Schellander K, Wicke M, Wimmers K, Ponsuksili S. Molecular changes in mitochondrial respiratory activity and metabolic enzyme activity in muscle of four pig breeds with distinct metabolic types. J Bioenerg Biomembr 2016; 48:55-65. [PMID: 26759028 DOI: 10.1007/s10863-015-9639-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 12/21/2015] [Indexed: 02/05/2023]
Abstract
Skeletal muscles are metabolically active and have market value in meat-producing farm animals. A better understanding of biological pathways affecting energy metabolism in skeletal muscle could advance the science of skeletal muscle. In this study, comparative pathway-focused gene expression profiling in conjunction with muscle fiber typing were analyzed in skeletal muscles from Duroc, Pietrain, and Duroc-Pietrain crossbred pigs. Each breed type displayed a distinct muscle fiber-type composition. Mitochondrial respiratory activity and glycolytic and oxidative enzyme activities were comparable among genotypes, except for significantly lower complex I activity in Pietrain pigs homozygous-positive for malignant hyperthermia syndrome. At the transcriptional level, lactate dehydrogenase B showed breed specificity, with significantly lower expression in Pietrain pigs homozygous-positive for malignant hyperthermia syndrome. A similar mRNA expression pattern was shown for several subunits of oxidative phosphorylation complexes, including complex I, complex II, complex IV, and ATP synthase. Significant correlations were observed between mRNA expression of genes in focused pathways and enzyme activities in a breed-dependent manner. Moreover, expression patterns of pathway-focused genes were well correlated with muscle fiber-type composition. These results stress the importance of regulation of transcriptional rate of genes related to oxidative and glycolytic pathways in the metabolic capacity of muscle fibers. Overall, the results further the breed-specific understanding of the molecular basis of metabolic enzyme activities, which directly impact meat quality.
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Affiliation(s)
- Xuan Liu
- Leibniz Institute for Farm Animal Biology (FBN), Institute for Genome Biology, Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany
| | - Nares Trakooljul
- Leibniz Institute for Farm Animal Biology (FBN), Institute for Genome Biology, Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany
| | - Eduard Muráni
- Leibniz Institute for Farm Animal Biology (FBN), Institute for Genome Biology, Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany
| | - Carsten Krischek
- Institute of Food Quality and Food Safety, University of Veterinary Medicine Hannover, D-30173, Hannover, Germany
| | - Karl Schellander
- Insititute of Animal Science, Animal Breeding and Husbandry Group, University of Bonn, Bonn, Germany
| | - Michael Wicke
- Department of Animal Sciences, Quality of Food of Animal Origin, Georg-August-University Goettingen, Goettingen, Germany
| | - Klaus Wimmers
- Leibniz Institute for Farm Animal Biology (FBN), Institute for Genome Biology, Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany
| | - Siriluck Ponsuksili
- Leibniz Institute for Farm Animal Biology (FBN), Institute for Genome Biology, Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany.
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Abstract
Adult skeletal muscle is maintained and repaired by resident stem cells called satellite cells, located between the plasmalemma of a muscle fiber, and the surrounding basal lamina. When needed, satellite cells are activated to form proliferative myoblasts, that then differentiate and fuse to existing muscle fibers, or fuse together to form replacement myofibers. In parallel, a proportion of satellite cells self-renew, to maintain the stem cell pool. To date, Pax7 is the marker of choice for identifying quiescent satellite cells. Co-immunostaining of skeletal muscle with Pax7 and laminin allows both identification of satellite cells, and the myofiber that they are associated with. Furthermore, satellite cells can be followed through the early stages of the myogenic program by co-immunostaining with myogenic regulatory factors such as MyoD. To test genetically modified mice for satellite cell expression, co-immunostaining can be performed for Pax7 and reporter genes such as eGFP. Here, we describe a method for identification of satellite cells in skeletal muscle sections, including muscle isolation, cryosectioning and co-immunostaining for Pax7 and laminin.
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Affiliation(s)
- Huascar P Ortuste Quiroga
- Randall Division of Cell and Molecular Biophysics, King's College London, New Hunt's House, Guy's Campus, London, SE1 1UL, UK
| | - Katsumasa Goto
- Department of Physiology, Graduate School of Health Sciences, Toyohashi SOZO University, 20-1 Matsushita, Ushikawa, Toyohashi, Aichi, 440-8511, Japan
| | - Peter S Zammit
- Randall Division of Cell and Molecular Biophysics, King's College London, New Hunt's House, Guy's Campus, London, SE1 1UL, UK.
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Moriyama H, Amano K, Itoh M, Matsumura G, Otsuka N. Morphometric aspects of the facial and skeletal muscles in fetuses. Int J Pediatr Otorhinolaryngol 2015; 79:998-1002. [PMID: 25920965 DOI: 10.1016/j.ijporl.2015.04.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Accepted: 04/07/2015] [Indexed: 11/29/2022]
Abstract
OBJECTIVES There are few research reports providing a comparison of the muscle fiber morphometry between human fetuses and adults. Data on fetal and adult muscle fibers would be valuable in understanding muscle development and a variety of muscle diseases. This study investigated human muscle fiber growth to clarify the difference between the facial muscles and other skeletal muscles. METHODS The materials were obtained from three male fetuses (6-month-old) and 11 Japanese male cadavers aged 43-86 years (average: 71.8). Human buccinator muscles (facial muscles), masseter and biceps brachii muscles (skeletal muscles) were resected. We counted the muscle fibers and measured their transverse area. We also calculated the number of muscle fibers per mm(2) (NMF) and the average transverse area of the muscle fibers (TAMFs). RESULTS The average of the NMF of the buccinator, masseter and biceps brachii muscles in fetuses had, respectively, 19, 37, and 22 times as many fibers as those in adults. The average fetus/adult ratios of the TAMF of the buccinator, masseter and biceps brachii muscles were 4.0%, 2.4%, 4.1%, respectively. CONCLUSIONS The average NMF for all kinds of muscles decreased after birth; however, the peak in life-span or decreases with the aging process tended to vary with the kind of muscles examined. The average TAMF for all kinds of muscles enlarged after birth. We considered that the enlargement of the TAMF was connected with the emergence of fetal movements and functional demands after birth.
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Affiliation(s)
- Hiroshi Moriyama
- Department of Anatomy, Showa University School of Medicine, 5-8, Hatanodai 1, Shinagawa-ku, Tokyo 142-8555, Japan.
| | - Kaori Amano
- Department of Anatomy, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka-shi, Tokyo 181-8611, Japan
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, 1-1, Shinjuku 6, Shinjuku-ku, Tokyo 160-8402, Japan
| | - George Matsumura
- Department of Anatomy, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka-shi, Tokyo 181-8611, Japan
| | - Naruhito Otsuka
- Department of Anatomy, Showa University School of Medicine, 5-8, Hatanodai 1, Shinagawa-ku, Tokyo 142-8555, Japan
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Komiya Y, Anderson JE, Akahoshi M, Nakamura M, Tatsumi R, Ikeuchi Y, Mizunoya W. Protocol for rat single muscle fiber isolation and culture. Anal Biochem 2015; 482:22-4. [PMID: 25912416 DOI: 10.1016/j.ab.2015.03.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 03/20/2015] [Accepted: 03/24/2015] [Indexed: 11/19/2022]
Abstract
To attain a superior in vitro model of mature muscle fibers, we modified the established protocol for isolating single muscle fibers from rat skeletal muscle. Muscle fiber cultures with high viability were obtained using flexor digitorum brevis muscle and lasted for at least 7 days. We compared the expression levels of adult myosin heavy chain (MyHC) isoforms in these single muscle fibers with myotubes formed from myoblasts; isolated fibers contained markedly more abundant adult MyHC isoforms than myotubes. This muscle fiber model, therefore, will be useful for studying the various functions and cellular processes of mature muscles in vitro.
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Affiliation(s)
- Yusuke Komiya
- Department of Bioresource Sciences, Faculty of Agriculture, Kyushu University, Higashi-ku, Fukuoka 812-8581, Japan
| | - Judy E Anderson
- Department of Biological Sciences, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - Mariko Akahoshi
- Department of Bioresource Sciences, Faculty of Agriculture, Kyushu University, Higashi-ku, Fukuoka 812-8581, Japan
| | - Mako Nakamura
- Department of Bioresource Sciences, Faculty of Agriculture, Kyushu University, Higashi-ku, Fukuoka 812-8581, Japan
| | - Ryuichi Tatsumi
- Department of Bioresource Sciences, Faculty of Agriculture, Kyushu University, Higashi-ku, Fukuoka 812-8581, Japan
| | - Yoshihide Ikeuchi
- Department of Bioresource Sciences, Faculty of Agriculture, Kyushu University, Higashi-ku, Fukuoka 812-8581, Japan
| | - Wataru Mizunoya
- Department of Bioresource Sciences, Faculty of Agriculture, Kyushu University, Higashi-ku, Fukuoka 812-8581, Japan.
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Schroeder KL, Rosser BW, Kim SY. Fiber type composition of the human quadratus plantae muscle: a comparison of the lateral and medial heads. J Foot Ankle Res 2014; 7:54. [PMID: 25530807 DOI: 10.1186/s13047-014-0054-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Accepted: 11/27/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The human quadratus plantae muscle has been attributed a variety of functions, however no consensus has been reached on its significance to foot functioning. The architecture of the human quadratus plantae consists of an evolutionarily conserved lateral head, and a medial head thought to be unique to Man. Surveys of human anatomy have demonstrated the absence of either the medial or lateral head in 20% of the population, which may have implications for foot functioning if each muscle head performs a discrete function. METHODS We investigated the quadratus plantae from eleven formalin-embalmed specimens with a mean age of 84 ± 9 years. Immunohistochemical methods were used to determine the percentage of Type I and Type II muscle fibers in the medial and lateral heads of the quadratus plantae from these specimens. RESULTS Results showed striking homogeneity in fiber type composition within an individual, with an average difference in Type I fiber content of 4.1% between lateral and medial heads. Between individuals, however, the ratio of fiber types within the quadratus plantae was highly variable, with Type I fiber percentages ranging from 19.1% to 91.6% in the lateral head, and 20.4% to 97.0% within the medial head. CONCLUSIONS Our finding of similar fiber type composition of lateral and medial heads within an individual supports the hypothesis that the two heads have a singular function.
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Li H, Gariépy C, Jin Y, Font I Furnols M, Fortin J, Rocha LM, Faucitano L. Effects of ractopamine administration and castration method on muscle fiber characteristics and sensory quality of the longissimus muscle in two Piétrain pig genotypes. Meat Sci 2014; 102:27-34. [PMID: 25529286 DOI: 10.1016/j.meatsci.2014.10.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Revised: 06/18/2014] [Accepted: 10/25/2014] [Indexed: 02/01/2023]
Abstract
Single and combined effects of ractopamine supplementation (RAC, 7.5 vs. 0 ppm), castration method (surgical castration: SC vs. immuno-castration: IM) and genotype (genotype A: GA vs. GB containing 25% or 50% Piétrain) were determined on longissimus muscle (LM) fiber traits and quality of pork (n=512). RAC increased fiber IIX cross-sectional area (P=0.009) and decreased glycolytic potential (P=0.02) and pork tenderness (P<0.001). Fiber traits indicated that LM of IM pigs was more oxidative (P<0.05) and meat had slightly higher (P=0.04) off-flavor score and WBSF than SC. LM from GB pigs was paler (P<0.05) and had greater (P<0.05) glycolytic potential, IIX fiber cross sectional area and pork off-flavor than GA. RAC supplementation, castration method and genotype or their combination affected some fiber traits and some quality parameters but differences reported were small indicating these treatments or their combination could be used without major prejudice to meat quality.
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Affiliation(s)
- Hui Li
- College of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China; Agriculture and Agri-Food Canada, Food Research and Development Centre, Saint-Hyacinthe, QC J2S 8E3, Canada; Agriculture and Agri-Food Canada, Dairy and Swine and Development Research Centre, Sherbrooke, QC J1M 0C8, Canada; Institute of Agricultural and Livestock Products, Inner Mongolia Academy of Agricultural & Husbandry Sciences, Hohhot, Inner Mongolia 010031, China
| | - Claude Gariépy
- Agriculture and Agri-Food Canada, Food Research and Development Centre, Saint-Hyacinthe, QC J2S 8E3, Canada.
| | - Ye Jin
- College of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China
| | | | - Jacinthe Fortin
- Agriculture and Agri-Food Canada, Food Research and Development Centre, Saint-Hyacinthe, QC J2S 8E3, Canada
| | - Luiene M Rocha
- Agriculture and Agri-Food Canada, Dairy and Swine and Development Research Centre, Sherbrooke, QC J1M 0C8, Canada; Département des sciences animales, Faculté des sciences de l'agriculture et de l'alimentation, Université Laval, HoustonPavillon Paul-Comtois, Québec City, QC G1V A06, Canada
| | - Luigi Faucitano
- Agriculture and Agri-Food Canada, Dairy and Swine and Development Research Centre, Sherbrooke, QC J1M 0C8, Canada
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Hanson MG, Niswander LA. An explant muscle model to examine the refinement of the synaptic landscape. J Neurosci Methods 2014; 238:95-104. [PMID: 25251554 DOI: 10.1016/j.jneumeth.2014.09.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Revised: 08/27/2014] [Accepted: 09/12/2014] [Indexed: 01/14/2023]
Abstract
Signals from nerve and muscle regulate the formation of synapses. Transgenic mouse models and muscle cell cultures have elucidated the molecular mechanisms required for aggregation and stabilization of synaptic structures. However, far less is known about the molecular pathways involved in redistribution of muscle synaptic components. Here we established a physiologically viable whole-muscle embryonic explant system, in the presence or absence of the nerve, which demonstrates the synaptic landscape is dynamic and malleable. Manipulations of factors intrinsic to the muscle or extrinsically provided by the nerve illustrate vital functions during formation, redistribution and elimination of acetylcholine receptor (AChR) clusters. In particular, RyR1 activity is an important mediator of these functions. This physiologically relevant and readily accessible explant system provides a new approach to genetically uncouple nerve-derived signals and for manipulation via signaling molecules, drugs, and electrical stimulation to examine early formation of the neuromuscular circuit.
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Affiliation(s)
- Martin Gartz Hanson
- Howard Hughes Medical Institute, Department of Pediatrics, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora, CO 80045, United States.
| | - Lee A Niswander
- Howard Hughes Medical Institute, Department of Pediatrics, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora, CO 80045, United States
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Wu W, Huang R, Wu Q, Li P, Chen J, Li B, Liu H. The role of Six1 in the genesis of muscle cell and skeletal muscle development. Int J Biol Sci 2014; 10:983-9. [PMID: 25210496 PMCID: PMC4159689 DOI: 10.7150/ijbs.9442] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2014] [Accepted: 06/06/2014] [Indexed: 02/06/2023] Open
Abstract
The sine oculis homeobox 1 (Six1) gene encodes an evolutionarily conserved transcription factor. In the past two decades, much research has indicated that Six1 is a powerful regulator participating in skeletal muscle development. In this review, we summarized the discovery and structural characteristics of Six1 gene, and discussed the functional roles and molecular mechanisms of Six1 in myogenesis and in the formation of skeletal muscle fibers. Finally, we proposed areas of future interest for understanding Six1 gene function.
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Affiliation(s)
- Wangjun Wu
- 1. Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China; ; 2. Huaian Academy of Nanjing Agricultural University, Huaian, Jiangsu, 223001, China
| | - Ruihua Huang
- 1. Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China; ; 2. Huaian Academy of Nanjing Agricultural University, Huaian, Jiangsu, 223001, China
| | - Qinghua Wu
- 3. College of Life Science, Yangtze University, Jingzhou, Hubei, 434023, China. ; 4. Center for Basic and Applied Research, Faculty of Informatics and Management, University of Hradec Kradec Kralove, Hradec Kralove, Czech Republic
| | - Pinghua Li
- 1. Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China; ; 2. Huaian Academy of Nanjing Agricultural University, Huaian, Jiangsu, 223001, China
| | - Jie Chen
- 1. Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Bojiang Li
- 1. Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Honglin Liu
- 1. Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
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Comin CH, Xu X, Wang Y, Costa LDF, Yang Z. An image processing approach to analyze morphological features of microscopic images of muscle fibers. Comput Med Imaging Graph 2014; 38:803-14. [PMID: 25124286 DOI: 10.1016/j.compmedimag.2014.07.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Revised: 06/12/2014] [Accepted: 07/18/2014] [Indexed: 10/25/2022]
Abstract
We present an image processing approach to automatically analyze duo-channel microscopic images of muscular fiber nuclei and cytoplasm. Nuclei and cytoplasm play a critical role in determining the health and functioning of muscular fibers as changes of nuclei and cytoplasm manifest in many diseases such as muscular dystrophy and hypertrophy. Quantitative evaluation of muscle fiber nuclei and cytoplasm thus is of great importance to researchers in musculoskeletal studies. The proposed computational approach consists of steps of image processing to segment and delineate cytoplasm and identify nuclei in two-channel images. Morphological operations like skeletonization is applied to extract the length of cytoplasm for quantification. We tested the approach on real images and found that it can achieve high accuracy, objectivity, and robustness.
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Affiliation(s)
| | - Xiaoyin Xu
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Yaming Wang
- Department of Anesthesia, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | | | - Zhong Yang
- Department of Clinical Hematology, The Third Military Medical University, Chongqing, China.
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45
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Butugan MK, Sartor CD, Watari R, Martins MCS, Ortega NRS, Vigneron VAM, Sacco ICN. Multichannel EMG-based estimation of fiber conduction velocity during isometric contraction of patients with different stages of diabetic neuropathy. J Electromyogr Kinesiol 2014; 24:465-72. [PMID: 24845169 DOI: 10.1016/j.jelekin.2014.04.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 04/10/2014] [Accepted: 04/14/2014] [Indexed: 01/31/2023] Open
Abstract
This study compares muscle fiber conduction velocities estimated using surface electromyography during isometric maximal voluntary contraction in different stages of diabetic neuropathy. Eighty-five adults were studied: 16 non-diabetic individuals and 69 diabetic patients classified into four neuropathy stages, defined by a fuzzy expert system: absent (n=26), mild (n=21), moderate (n=11) and severe (n=11). Average muscle fiber conduction velocities of gastrocnemius medialis, tibialis anterior, vastus lateralis and biceps femoris were assessed using linear array electrodes, and were compared by ANOVA. Conduction velocities were significantly decreased in the moderate neuropathy group for the vastus lateralis compared to other groups (from 18% to 21% decrease), and were also decreased in all diabetic groups for the tibialis anterior (from 15% to 20% from control group). Not only the distal anatomical localization of the muscle affects the conduction velocity, but also the proportion of muscle fiber type, where the tibialis anterior with greater type I fiber proportion is affected earlier while the vastus lateralis with greater type II fiber proportion is affected in later stages of the disease. Generally, the muscles of the lower limb have different responsiveness to the effects of diabetes mellitus and show a reduction in the conduction velocity as neuropathy progresses.
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Affiliation(s)
- Marco K Butugan
- University of Sao Paulo, School of Medicine, Physical Therapy, Speech and Occupational Therapy Dept., Sao Paulo, SP, Brazil
| | - Cristina D Sartor
- University of Sao Paulo, School of Medicine, Physical Therapy, Speech and Occupational Therapy Dept., Sao Paulo, SP, Brazil
| | - Ricky Watari
- University of Sao Paulo, School of Medicine, Physical Therapy, Speech and Occupational Therapy Dept., Sao Paulo, SP, Brazil
| | - Maria Cecília S Martins
- University of Sao Paulo, School of Medicine, Physical Therapy, Speech and Occupational Therapy Dept., Sao Paulo, SP, Brazil
| | - Neli R S Ortega
- University of Sao Paulo, School of Medicine, Center of Fuzzy Systems in Health, Sao Paulo, SP, Brazil
| | | | - Isabel C N Sacco
- University of Sao Paulo, School of Medicine, Physical Therapy, Speech and Occupational Therapy Dept., Sao Paulo, SP, Brazil.
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