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Takaragawa M, Tobina T, Shiose K, Kakigi R, Tsuzuki T, Ichinoseki-Sekine N, Kumagai H, Zempo H, Miyamoto-Mikami E, Kobayashi H, Naito H, Fuku N. Genotype Score for Iron Status Is Associated with Muscle Fiber Composition in Women. Genes (Basel) 2021; 13:genes13010005. [PMID: 35052344 PMCID: PMC8775127 DOI: 10.3390/genes13010005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 12/16/2021] [Accepted: 12/17/2021] [Indexed: 01/01/2023] Open
Abstract
Human muscle fiber composition is heterogeneous and mainly determined by genetic factors. A previous study reported that experimentally induced iron deficiency in rats increases the proportion of fast-twitch muscle fibers. Iron status has been reported to be affected by genetic factors. As the TMPRSS6 rs855791 T/C and HFE rs1799945 C/G polymorphisms are strongly associated with iron status in humans, we hypothesized that the genotype score (GS) based on these polymorphisms could be associated with the muscle fiber composition in humans. Herein, we examined 214 Japanese individuals, comprising of 107 men and 107 women, for possible associations of the GS for iron status with the proportion of myosin heavy chain (MHC) isoforms (I, IIa, and IIx) as markers of muscle fiber composition. No statistically significant correlations were found between the GS for iron status and the proportion of MHC isoforms in all participants. When the participants were stratified based on sex, women showed positive and negative correlations of the GS with MHC-IIa (age-adjusted p = 0.020) and MHC-IIx (age-adjusted p = 0.011), respectively. In contrast, no correlation was found in men. In women, a 1-point increase in the GS was associated with 2.42% higher MHC-IIa level and 2.72% lower MHC-IIx level. Our results suggest that the GS based on the TMPRSS6 rs855791 T/C and HFE rs1799945 C/G polymorphisms for iron status is associated with muscle fiber composition in women.
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Affiliation(s)
- Mizuki Takaragawa
- Graduate School of Health and Sports Science, Juntendo University, Chiba 270-1695, Japan; (M.T.); (N.I.-S.); (H.K.); (E.M.-M.); (H.K.); (H.N.)
| | - Takuro Tobina
- Faculty of Nursing and Nutrition, University of Nagasaki, Nagasaki 851-2195, Japan;
| | - Keisuke Shiose
- Faculty of Education, University of Miyazaki, Miyazaki 889-2192, Japan;
| | - Ryo Kakigi
- Faculty of Management & Information Science, Josai International University, Chiba 283-8555, Japan;
| | | | - Noriko Ichinoseki-Sekine
- Graduate School of Health and Sports Science, Juntendo University, Chiba 270-1695, Japan; (M.T.); (N.I.-S.); (H.K.); (E.M.-M.); (H.K.); (H.N.)
- Faculty of Liberal Arts, The Open University of Japan, Chiba 261-8586, Japan
| | - Hiroshi Kumagai
- Graduate School of Health and Sports Science, Juntendo University, Chiba 270-1695, Japan; (M.T.); (N.I.-S.); (H.K.); (E.M.-M.); (H.K.); (H.N.)
| | - Hirofumi Zempo
- Faculty of Health and Nutrition, Tokyo Seiei College, Tokyo 124-8530, Japan;
| | - Eri Miyamoto-Mikami
- Graduate School of Health and Sports Science, Juntendo University, Chiba 270-1695, Japan; (M.T.); (N.I.-S.); (H.K.); (E.M.-M.); (H.K.); (H.N.)
| | - Hiroyuki Kobayashi
- Graduate School of Health and Sports Science, Juntendo University, Chiba 270-1695, Japan; (M.T.); (N.I.-S.); (H.K.); (E.M.-M.); (H.K.); (H.N.)
- Mito Medical Center, Tsukuba University Hospital, Ibaraki 310-0015, Japan
| | - Hisashi Naito
- Graduate School of Health and Sports Science, Juntendo University, Chiba 270-1695, Japan; (M.T.); (N.I.-S.); (H.K.); (E.M.-M.); (H.K.); (H.N.)
| | - Noriyuki Fuku
- Graduate School of Health and Sports Science, Juntendo University, Chiba 270-1695, Japan; (M.T.); (N.I.-S.); (H.K.); (E.M.-M.); (H.K.); (H.N.)
- Correspondence: ; Tel.: +81-476-98-1001 (ext. 9203)
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Ali EM, El-Sayed SM, Elbastawisy YM. Ultrastructural aberrations, histological disruption and upregulation of the VEGF, CD34 and ASMA immunoexpression in the myocardium of anemic albino rats. Acta Histochem 2021; 123:151731. [PMID: 34052675 DOI: 10.1016/j.acthis.2021.151731] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 05/04/2021] [Accepted: 05/10/2021] [Indexed: 12/17/2022]
Abstract
Iron deficiency anemia (IDA) is a global health problem affecting various body systems and tissues including the cardiovascular system. Several literatures described the associated physiological and clinical changes in the cardiovascular system and heart. However, the associated structural changes were poorly investigated. Therefore, the main aim of the present work was to elucidate whether IDA induces structural changes and alterations in the VEGF, CD34 and ASMA immunoexpression in the myocardium of albino rats. Thirty adult male albino rats were divided into two groups (fifteen rats each); control and anemic. Hematological data for all animals were assessed weekly and statistically analyzed. Three weeks later, animals were sacrificed, and heart specimens were obtained and processed for light and electron microscopy. All hematological parameters showed a statistically significant decrease in the anemic group. Structurally, the anemic group showed markedly degenerated, disrupted and disorganized cardiomyocytes in addition to markedly congested blood vessels, fibroblasts, collagen fibers deposition and perivascular cellular infiltration were noted. Also, positive immunostaining for VEGF, CD34 and ASMA was observed. Ultra-structurally, the myocardium of the anemic group showed disrupted and degenerated myofibrils with degenerated nuclei, perinuclear edema, widened interstitial spaces and marked collagen deposition. Mitochondria markedly increased with abnormal shapes. IDA induced myocardial injury that may propagate to regeneration through activated CD34 progenitor cells and increased VEGF or to degeneration and fibrosis through collagen fibers deposition and enhanced ASMA. So, early diagnosis and treatment of IDA is mandatory to avoid the associated myocardial structural changes.
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Leermakers PA, Remels AHV, Zonneveld MI, Rouschop KMA, Schols AMWJ, Gosker HR. Iron deficiency-induced loss of skeletal muscle mitochondrial proteins and respiratory capacity; the role of mitophagy and secretion of mitochondria-containing vesicles. FASEB J 2020; 34:6703-6717. [PMID: 32202346 DOI: 10.1096/fj.201901815r] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 02/18/2020] [Accepted: 03/12/2020] [Indexed: 12/13/2022]
Abstract
Iron homeostasis is essential for mitochondrial function, and iron deficiency has been associated with skeletal muscle weakness and decreased exercise capacity in patients with different chronic disorders. We hypothesized that iron deficiency-induced loss of skeletal muscle mitochondria is caused by increased mitochondrial clearance. To study this, C2C12 myotubes were subjected to the iron chelator deferiprone. Mitochondrial parameters and key constituents of mitophagy pathways were studied in presence or absence of pharmacological autophagy inhibition or knockdown of mitophagy-related proteins. Furthermore, it was explored if mitochondria were present in extracellular vesicles (EV). Iron chelation resulted in an increase in BCL2/Adenovirus E1B 19 kDa protein-interacting protein 3 (BNIP3) and BNIP3-like gene and protein levels, and the appearance of mitochondria encapsulated by lysosome-like vesicular structures in myotubes. Moreover, mitochondria were secreted via EV. These changes were associated with cellular mitochondrial impairments. These impairments were unaltered by autophagy inhibition, knockdown of mitophagy-related proteins BNIP3 and BNIP3L, or knockdown of their upstream regulator hypoxia-inducible factor 1 alpha. In conclusion, mitophagy is not essential for development of iron deficiency-induced reductions in mitochondrial proteins or respiratory capacity. The secretion of mitochondria-containing EV could present an additional pathway via which mitochondria can be cleared from iron chelation-exposed myotubes.
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Affiliation(s)
- Pieter A Leermakers
- Department of Respiratory Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, the Netherlands
| | - Alexander H V Remels
- Department of Pharmacology and Toxicology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, the Netherlands
| | - Marijke I Zonneveld
- Department of Radiotherapy, GROW School for Oncology and Developmental Biology, Maastricht University Medical Centre+, Maastricht, the Netherlands
| | - Kasper M A Rouschop
- Department of Radiotherapy, GROW School for Oncology and Developmental Biology, Maastricht University Medical Centre+, Maastricht, the Netherlands
| | - Annemie M W J Schols
- Department of Respiratory Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, the Netherlands
| | - Harry R Gosker
- Department of Respiratory Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, the Netherlands
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Kuzmiak S, Glancy B, Sweazea KL, Willis WT. Mitochondrial function in sparrow pectoralis muscle. J Exp Biol 2012; 215:2039-50. [DOI: 10.1242/jeb.065094] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
SUMMARY
Flying birds couple a high daily energy turnover with double-digit millimolar blood glucose concentrations and insulin resistance. Unlike mammalian muscle, flight muscle predominantly relies on lipid oxidation during locomotion at high fractions of aerobic capacity, and birds outlive mammals of similar body mass by a factor of three or more. Despite these intriguing functional differences, few data are available comparing fuel oxidation and free radical production in avian and mammalian skeletal muscle mitochondria. Thus we isolated mitochondria from English sparrow pectoralis and rat mixed hindlimb muscles. Maximal O2 consumption and net H2O2 release were measured in the presence of several oxidative substrate combinations. Additionally, NAD- and FAD-linked electron transport chain (ETC) capacity was examined in sonicated mitochondria. Sparrow mitochondria oxidized palmitoyl-l-carnitine 1.9-fold faster than rat mitochondria and could not oxidize glycerol-3-phosphate, while both species oxidized pyruvate, glutamate and malate–aspartate shuttle substrates at similar rates. Net H2O2 release was not significantly different between species and was highest when glycolytic substrates were oxidized. Sonicated sparrow mitochondria oxidized NADH and succinate over 1.8 times faster than rat mitochondria. The high ETC catalytic potential relative to matrix substrate dehydrogenases in sparrow mitochondria suggests a lower matrix redox potential is necessary to drive a given O2 consumption rate. This may contribute to preferential reliance on lipid oxidation, which may result in lower in vivo reactive oxygen species production in birds compared with mammals.
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Affiliation(s)
- Sarah Kuzmiak
- Arizona State University, Department of Kinesiology, Tempe, AZ 85287, USA
| | - Brian Glancy
- Arizona State University, Department of Kinesiology, Tempe, AZ 85287, USA
| | - Karen L. Sweazea
- Arizona State University, Department of Kinesiology, Tempe, AZ 85287, USA
| | - Wayne T. Willis
- Arizona State University, Department of Kinesiology, Tempe, AZ 85287, USA
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Ciena AP, de Almeida SRY, Alves PHDM, Bolina-Matos RDS, Dias FJ, Issa JPM, Iyomasa MM, Watanabe IS. Histochemical and ultrastructural changes of sternomastoid muscle in aged Wistar rats. Micron 2011; 42:871-6. [PMID: 21767955 DOI: 10.1016/j.micron.2011.06.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Revised: 06/01/2011] [Accepted: 06/02/2011] [Indexed: 12/25/2022]
Abstract
The aim of this study was to evaluate histochemically and ultrastructurally the sternomastoid muscle (SM) of adults and aged rats, employing histochemic (NADH-TR reaction) and transmission electron microscopic methods. It was used 20 rats, divided into two groups: adults (n=10), animals with 4 months of age, and aged group (n=10), animals with 24 months of age. Five animals from each group were anesthetized with an overdose of urethane (3g/kg i.p.), and the muscles dissected after the samples processing for histochemical reaction (NADH-TR). Three types of fibers were identified by their metabolic characteristics: fibers with high oxidative capacity (O), intermediate oxidative capacity (OG) and low oxidative capacity (G). For transmission electron microscopic method, the animals were anesthetized and perfused by modified Karnovsky solution and the tissues were postfixed in 1% osmium tetroxide solution, dehydrated and embedded in Spurr resin. It was performed ultra-thin sections for transmission electron microscopic analysis. The SM showed heterogeneity in their composition according to the fiber types, with significant difference (p<0.05) when comparing the fibers types between the superficial and deep regions and between the adult and aged groups. It was observe a decrease between the comparison of the total fibers density and GO fiber, and an increase of the O fiber in aged group. Ultrastructural characteristics of muscle cells in aged group showed typical morphological changes, characterizing muscular atrophy. We conclude based on physiological ageing process, changes in muscle fibers classification, and ultrastructuraly, morphological alterations on muscle cells, characterizing a muscular atrophy.
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Affiliation(s)
- Adriano Polican Ciena
- Department of Anatomy, Institute of Biomedical Sciences-ICB, University of São Paulo, Av. Prof. Lineu Prestes, 2415 Butantã, 05508-900 São Paulo, SP, Brazil
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