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[Assessment of low muscle mass and strength in a control population]. NUTR HOSP 2023; 40:67-77. [PMID: 36537323 DOI: 10.20960/nh.04013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Introduction Background and aims: low muscle mass (LMM) conditions the nutritional status of an individual and has implications for quality of life and prognosis. The aim of this study was to evaluate body composition and determine normal values in the diagnosis of LMM in a control group of healthy individuals. Methods: a cross-sectional study of healthy volunteers aged 18 to 45 years with body mass index (BMI) < 30 kg/m2. A descriptive study was performed including demographic, clinical, anthropometric, and body composition variables (by bioimpedance, TANITA MC 780 MA; TANITA, Tokyo, Japan), stratified by age, sex and BMI. Values corresponding to -1/-2 standard deviations (SD) were determined to consider low muscle mass/function. Results: we included 67 patients, 71,60 % women, with a median age of 28.29 (IQR 4.05) years. Males presented higher weight, BMI, fat-free mass (FFM), muscle mass (MM), appendicular lean mass (ALM), appendicular lean mass index (ALMI), and dynamometry values when compared to females. The -1/-2 SD values of the various muscle parameters were determined according to sex. Conclusion: this study determined normal LMM values in healthy and young people, and the most commonly used indexes to express it, which will allow the diagnosis of LMM in disease-related situations using the corresponding -2 DS value.
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Correia IM, da Silva Rodrigues G, Noronha NY, Watanabe LM, Luciano de Almeida M, Sobrinho ACDS, Nonino CB, Bueno Júnior CR. Older postmenopausal women with lower lean mass have hypermethylated sites in the PI3K-Akt pathway. Front Physiol 2023; 14:1150821. [PMID: 37123284 PMCID: PMC10143498 DOI: 10.3389/fphys.2023.1150821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 03/28/2023] [Indexed: 05/02/2023] Open
Abstract
Introduction: The decrease in lean mass is directly related to the loss of independence, muscle strength, and worse quality of life over the years. Although the genetic determinants of muscle mass were well recognized, recent literature has been uncovering new epigenetic factors affecting the state of muscular tissue. This study aimed to verify differences in the DNA methylation profile among Brazilian postmenopausal women aged 50-70 years according to the lean mass evaluation. Methods: A cross-sectional study comprised 40 women aged 50-70 years. After K-means cluster analysis the 40 participants were divided into two groups, the Lower Lean Mass group with 20 participants (61.1 ± 4.6 years) and the Higher Lean Mass group with 20 participants (60.7 ± 3.2 years). Lean mass was measured by dual-energy X-ray emission densitometry (DEXA). The participants' DNA was extracted using the Salting Out technique and subsequently, the Illumina 850k EPIC Infinium Methylation BeadChip was performed to obtain methylation data. Results: We obtained 1,913 differentially methylated sites (p ≤ 0.005 of β > 5% and β < -5%) in a total of 979 genes between groups (p ≤ 0.005; -5% > β > 5%). In addition, the PI3K-Akt pathway had the greatest power of significance with an FDR of 4.6 × 10-3. Conclusion: Our results demonstrate a differentiation between specific sites of different genes, which have essential functions in body composition and energy metabolism, supporting future studies that aim to relate lean mass with epigenetics.
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Affiliation(s)
- Igor Massari Correia
- School of Physical Education and Sport of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Guilherme da Silva Rodrigues
- Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
- *Correspondence: Guilherme da Silva Rodrigues,
| | - Natália Yumi Noronha
- Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Lígia Moriguchi Watanabe
- Department of Health Sciences, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | | | | | - Carla Barbosa Nonino
- College of Nursing of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Carlos Roberto Bueno Júnior
- School of Physical Education and Sport of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
- Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
- College of Nursing of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
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Uçar MK, Uçar K, Uçar Z, Bozkurt MR. Determination gender-based hybrid artificial intelligence of body muscle percentage by photoplethysmography signal. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2022; 224:107010. [PMID: 35843075 DOI: 10.1016/j.cmpb.2022.107010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 06/05/2022] [Accepted: 07/06/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND AND OBJECTIVE Muscle mass is one of the critical components that ensure muscle function. Loss of muscle mass at every stage of life can cause many adverse effects. Sarcopenia, which can occur in different age groups and is characterized by a decrease in muscle mass, is a critical syndrome that affects the quality of life of individuals. Aging, a universal process, can also cause loss of muscle mass. It is essential to monitor and measure muscle mass, which should be sufficient to maintain optimal health. Having various disadvantages with the ordinary methods used to estimate muscle mass increases the need for the new high technology methods. This study aims to develop a low-cost and trustworthy Body Muscle Percentage calculation model based on artificial intelligence algorithms and biomedical signals. METHODS For the study, 327 photoplethysmography signals of the subject were used. First, the photoplethysmography signals were filtered, and sub-frequency bands were obtained. A quantity of 125 time-domain features, 25 from each signal, have been extracted. Additionally, it has reached 130 features in demographic features added to the model. To enhance the performance, the spearman feature selection algorithm was used. Decision trees, Support Vector Machines, Ensemble Decision Trees, and Hybrid machine learning algorithms (the combination of three methods) were used as machine learning algorithms. RESULTS The recommended Body Muscle Percentage estimation model have the perfomance values for all individuals R=0.95, for males R=0.90 and for females R=0.90 in this study. CONCLUSION Regarding the study results, it is thought that photoplethysmography-based models can be used to predict body muscle percentage.
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Affiliation(s)
- Muhammed Kürşad Uçar
- Sakarya University, Faculty of Engineering, Electrical-Electronics Engineering, Serdivan, Sakarya 54187, Turkey
| | - Kübra Uçar
- Hacettepe University, Faculty of Health Sciences, Department of Nutrition and Dietetics, Sihhiye, Ankara 06100, Turkey.
| | - Zeliha Uçar
- Istanbul Okan University, Institute of Health Sciences, Nutrition and Dietetics, Mecidiyekoy, Istanbul 34394, Turkey.
| | - Mehmet Recep Bozkurt
- Sakarya University, Faculty of Engineering, Electrical-Electronics Engineering, Serdivan, Sakarya 54187, Turkey.
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Maeda SS, Albergaria BH, Szejnfeld VL, Lazaretti-Castro M, Arantes HP, Ushida M, Domiciano DS, Pereira RMR, Marin-Mio RV, de Oliveira ML, de Mendonça LMC, do Prado M, de Souza GC, Palchetti CZ, Sarni ROS, Terreri MT, de Castro LCG, Artoni SMB, Amoroso L, Karcher DE, Prado CM, Gonzalez MC, de Medeiros Pinheiro M. Official Position of the Brazilian Association of Bone Assessment and Metabolism (ABRASSO) on the evaluation of body composition by densitometry-part II (clinical aspects): interpretation, reporting, and special situations. Adv Rheumatol 2022; 62:11. [PMID: 35365246 DOI: 10.1186/s42358-022-00240-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 03/04/2022] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE To present an updated and evidence-based guideline for the use of dual-energy x-ray absorptiometry (DXA) to assess body composition in clinical practice. MATERIALS AND METHODS This Official Position was developed by the Scientific Committee of the Brazilian Association of Bone Assessment and Metabolism (Associação Brasileira de Avaliação Óssea e Osteometabolismo, ABRASSO) and experts in the field who were invited to contribute to the preparation of this document. The authors searched current databases for relevant publications in the area of body composition assessment. In this second part of the Official Position, the authors discuss the interpretation and reporting of body composition parameters assessed by DXA and the use of DXA for body composition evaluation in special situations, including evaluation of children, persons with HIV, and animals. CONCLUSION This document offers recommendations for the use of DXA in body composition evaluation, including indications, interpretation, and applications, to serve as a guiding tool in clinical practice and research for health care professionals in Brazil.
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Affiliation(s)
- Sergio Setsuo Maeda
- Discipline of Endocrinology, Department of Medicine, Universidade Federal de São Paulo (UNIFESP), Rua Estado de Israel, 639, São Paulo, SP, CEP: 04022-001, Brazil.
| | - Ben-Hur Albergaria
- Department of Epidemiology, Universidade Federal do Espírito Santo (UFES), Vitória, ES, Brazil
| | - Vera Lúcia Szejnfeld
- Discipline of Rheumatology, Department of Medicine, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Marise Lazaretti-Castro
- Discipline of Endocrinology, Department of Medicine, Universidade Federal de São Paulo (UNIFESP), Rua Estado de Israel, 639, São Paulo, SP, CEP: 04022-001, Brazil
| | - Henrique Pierotti Arantes
- School of Medicine, Instituto Master de Ensino Presidente Antônio Carlos (IMEPAC), Uberlândia, MG, Brazil
| | - Marcela Ushida
- Discipline of Rheumatology, Department of Medicine, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Diogo Souza Domiciano
- Discipline of Rheumatology, Department of Medicine, Universidade de São Paulo (USP), São Paulo, SP, Brazil
| | | | - Rosângela Villa Marin-Mio
- Discipline of Endocrinology, Department of Medicine, Universidade Federal de São Paulo (UNIFESP), Rua Estado de Israel, 639, São Paulo, SP, CEP: 04022-001, Brazil
| | - Mônica Longo de Oliveira
- Discipline of Endocrinology, Department of Medicine, Universidade Federal de São Paulo (UNIFESP), Rua Estado de Israel, 639, São Paulo, SP, CEP: 04022-001, Brazil
| | | | | | | | - Cecília Zanin Palchetti
- Department of Nutrition, School of Public Health, Universidade de São Paulo (USP), São Paulo, SP, Brazil
| | - Roseli Oselka Saccardo Sarni
- Discipline of Allergy, Clinical Immunology, and Rheumatology, Department of Pediatrics, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Maria Teresa Terreri
- Section of Pediatric Rheumatology, Department of Pediatrics, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil
| | | | | | - Lizandra Amoroso
- School of Agricultural and Veterinary Sciences, Universidade Estadual de São Paulo (UNESP), Jaboticabal, SP, Brazil
| | - Débora Emy Karcher
- School of Agricultural and Veterinary Sciences, Universidade Estadual de São Paulo (UNESP), Jaboticabal, SP, Brazil
| | - Carla M Prado
- Department of Agricultural, Food and Nutritional Science, Division of Human Nutrition, University of Alberta, Edmonton, Canada
| | - Maria Cristina Gonzalez
- Postgraduate Program in Health and Behavior, Universidade Católica de Pelotas (UCPel), Pelotas, RS, Brazil.,Postgraduate Program in Nutrition and Food, Universidade Federal de Pelotas (UFPel), Pelotas, RS, Brazil
| | - Marcelo de Medeiros Pinheiro
- Discipline of Rheumatology, Department of Medicine, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil
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Bridger Staatz C, Kelly Y, Lacey RE, Blodgett JM, George A, Arnot M, Walker E, Hardy R. Socioeconomic position and body composition in childhood in high- and middle-income countries: a systematic review and narrative synthesis. Int J Obes (Lond) 2021; 45:2316-2334. [PMID: 34315999 PMCID: PMC8528703 DOI: 10.1038/s41366-021-00899-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 05/24/2021] [Accepted: 06/30/2021] [Indexed: 02/06/2023]
Abstract
BACKGROUND The relation between socioeconomic position (SEP) and obesity measured by body mass index (BMI), a measure of weight for height, has been extensively reviewed in children, showing consistent associations between disadvantaged SEP and higher BMI in high-income countries (HICs) and lower BMI in middle-income countries (MICs). Fat mass (FM), a more accurate measure of adiposity, and fat-free mass (FFM) are not captured by BMI, but have been shown to track from childhood to adulthood, and be important for cardiovascular health and functional outcomes in later life. It is not clear whether body composition is associated with SEP. We systematically reviewed the association between SEP and body composition in childhood. METHODS A systematic review was carried out following PRISMA guidelines. The protocol was pre-registered with PROSPERO (CRD42019119937). Original studies in the English language, which examined the association between SEP and body composition in childhood, were included. An electronic search of three databases was conducted. Two independent reviewers carried out screening, data extraction and quality assessment. Due to heterogeneity in results, a narrative synthesis was conducted. Heterogeneity in findings according to SEP, sex, body composition measure and country income level was investigated. RESULTS 50 papers were included, the majority from HICs. No papers were from low-income countries. Disadvantage in childhood was associated with greater FM and lower FFM in HICs, but with lower FM and lower FFM in MICs. When measures of FFM indexed to height were used there was no evidence of associations with SEP. In HICs, more studies reported associations between disadvantaged SEP and higher FM among girls comparative to boys. CONCLUSIONS Inequalities in FM are evident in HICs and, in the opposite direction, in MICs and follow similar trends to inequalities for BMI. Inequalities in height are likely important in understanding inequalities in FFM.
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Affiliation(s)
- Charis Bridger Staatz
- Social Research Institute, Institute of Education, University College London, London, UK.
| | - Yvonne Kelly
- Department of Epidemiology and Public Health, University College London, London, UK
| | - Rebecca E Lacey
- Department of Epidemiology and Public Health, University College London, London, UK
| | - Joanna M Blodgett
- Institute of Sport Exercise and Health, Division of Surgery and Interventional Science, Faculty of Medical Sciences, University College London, London, UK
| | - Anitha George
- Department of Epidemiology and Public Health, University College London, London, UK
| | - Megan Arnot
- Department of Anthropology, University College London, London, UK
| | - Emma Walker
- Department of Epidemiology and Public Health, University College London, London, UK
| | - Rebecca Hardy
- Social Research Institute, Institute of Education, University College London, London, UK
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Aydin T, Kesiktaş FN, Oren MM, Erdogan T, Ahisha YC, Kizilkurt T, Corum M, Karacan İ, Öztürk S, Bahat G. Sarcopenia in patients following stroke: an overlooked problem. Int J Rehabil Res 2021; 44:269-275. [PMID: 34356039 DOI: 10.1097/mrr.0000000000000487] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Our aim was to investigate the prevalence of sarcopenia in stroke patients, the relationship between sarcopenia detected with different low muscle mass (LMM) adjustment methods, and between stroke-related parameters. Eighty-one patients with chronic stroke who underwent inpatient rehabilitation were included. Spasticity was evaluated by modified Ashworth scale, Brunnstrom staging approach was used for motor function evaluation, physical independence was evaluated using Barthel Index, quality-of-life was evaluated by EQ-5D-3L, and the Cumulative Illness Rating Scale was used to measure multimorbidity. Muscle strength was evaluated by handgrip strength, muscle quantity through a bioelectric impedance analysis, and physical performance by gait speed and short physical performance battery. LMM was calculated through two different methods: Skeletal muscle mass (SMM)/height2, and SMM/BMI. For the definition of sarcopenia, we followed the EWGSOP2 recommendation. Associated sarcopenia factors were predicted by multivariate binary logistic regression analysis. The prevalence of probable sarcopenia was 32.1%. The prevalence of confirmed/sarcopenia when LMM was adjusted for BMI was higher than when adjusted for height2 (16 and 1.2%, respectively). Age was significantly higher in those with probable sarcopenia (P = 0.006). Stroke duration was shorter in those with probable or confirmed sarcopenia (P = 0.004, P < 0.001, respectively). EQ-5D-3L scores were significantly lower in those with confirmed sarcopenia (P = 0.050). The strongest associated factor with confirmed sarcopenia was stroke duration (OR: 0.77; 95% CI, 0.618-0.965). This study suggests that prevalence of sarcopenia after a stroke is significantly high. LMM adjusted for BMI comes in front as the adjustment method for LMM after a stroke.
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Affiliation(s)
- Tuğba Aydin
- Department of Physical Medicine and Rehabilitation, Istanbul Physical Medicine Rehabilitation Training and Research Hospital
| | - Fatma Nur Kesiktaş
- Department of Physical Medicine and Rehabilitation, Istanbul Physical Medicine Rehabilitation Training and Research Hospital
| | | | - Tugba Erdogan
- Division of Geriatrics, Department of Internal Medicine
| | - Yiğit Can Ahisha
- Department of Physical Medicine and Rehabilitation, Istanbul Physical Medicine Rehabilitation Training and Research Hospital
| | | | - Mustafa Corum
- Department of Physical Medicine and Rehabilitation, Istanbul Physical Medicine Rehabilitation Training and Research Hospital
| | - İlhan Karacan
- Department of Physical Medicine and Rehabilitation, Istanbul Physical Medicine Rehabilitation Training and Research Hospital
| | - Savaş Öztürk
- Division of Nephrology, Department of Internal Medicine, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
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Life course socioeconomic position and body composition in adulthood: a systematic review and narrative synthesis. Int J Obes (Lond) 2021; 45:2300-2315. [PMID: 34316000 PMCID: PMC8528709 DOI: 10.1038/s41366-021-00898-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 05/24/2021] [Accepted: 06/30/2021] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Multiple systematic reviews have investigated the relation between socioeconomic position (SEP) and body mass index (BMI) throughout the life course. However, BMI does not capture quantity and distribution of fat and muscle, which are better indicators of obesity than BMI, and have been independently linked to adverse health outcomes. Less is known about the relation between SEP and body composition, and the literature has not been reviewed. We therefore systematically reviewed the literature on the association between life course SEP and body composition in adulthood. METHODS A protocol was registered on PROSPERO (CRD42019119937), and the review followed PRISMA guidelines. An electronic search of three databases (MEDLINE, Embase Classic + Embase and SPORTDiscus) was conducted. Original studies in the English language were included that examine the association between any recognised measure of SEP at any age and body composition (fat mass, fat-free mass, ratio and distribution) in adulthood, measured using a direct technique, i.e., not an anthropometric measure. A narrative synthesis was conducted. RESULTS A total of 47 papers were included in the final review, none were from low-income countries (LICs). Greater advantage in childhood and adulthood was associated with lower fat levels in high-income countries (HICs). Associations in the opposite direction were found exclusively in middle-income countries (MICs). No studies in MICs reported associations for childhood SEP. For measures of lean mass, the majority of papers reported no association, or greater advantage in adulthood associated with higher lean mass, with little variation between HICs and MICs. Associations in HICs are more often observed in women than men. CONCLUSION The results indicate that fat measures follow similar patterns to those seen for BMI, and that women in HICs are more likely to experience inequalities in both fat and lean measures. Further research in LICs and MICs is needed.
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Replication of FTO Gene associated with lean mass in a Meta-Analysis of Genome-Wide Association Studies. Sci Rep 2020; 10:5057. [PMID: 32193455 PMCID: PMC7081265 DOI: 10.1038/s41598-020-61406-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Accepted: 01/13/2020] [Indexed: 12/13/2022] Open
Abstract
Sarcopenia is characterized by low skeletal muscle, a complex trait with high heritability. With the dramatically increasing prevalence of obesity, obesity and sarcopenia occur simultaneously, a condition known as sarcopenic obesity. Fat mass and obesity-associated (FTO) gene is a candidate gene of obesity. To identify associations between lean mass and FTO gene, we performed a genome-wide association study (GWAS) of lean mass index (LMI) in 2207 unrelated Caucasian subjects and replicated major findings in two replication samples including 6,004 unrelated Caucasian and 38,292 unrelated Caucasian. We found 29 single nucleotide polymorphisms (SNPs) in FTO significantly associated with sarcopenia (combined p-values ranging from 5.92 × 10−12 to 1.69 × 10−9). Potential biological functions of SNPs were analyzed by HaploReg v4.1, RegulomeDB, GTEx, IMPC and STRING. Our results provide suggestive evidence that FTO gene is associated with lean mass.
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Hebbar P, Abu-Farha M, Mohammad A, Alkayal F, Melhem M, Abubaker J, Al-Mulla F, Thanaraj TA. FTO Variant rs1421085 Associates With Increased Body Weight, Soft Lean Mass, and Total Body Water Through Interaction With Ghrelin and Apolipoproteins in Arab Population. Front Genet 2020; 10:1411. [PMID: 32076432 PMCID: PMC7006511 DOI: 10.3389/fgene.2019.01411] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 12/31/2019] [Indexed: 12/25/2022] Open
Abstract
Association studies have implicated single nucleotide polymorphisms (SNPs), particularly rs1421085, from the fat mass and obesity-associated (FTO) gene with body composition phenotypes, obesity, dietary intake, and physical activity in European, East Asian, and African populations. However, the impact of the rs1421085 variant has not been sufficiently tested in ethnic populations (such as Arabs) with high levels of obesity. Further, there is a lack of studies identifying biomarkers that interact with FTO. Therefore, we investigated the association of rs1421085 with obesity and body composition traits and metabolic biomarkers in Arab population. We genotyped rs1421085 SNP in 278 Arab individuals, where multiple biomarkers relating to obesity, inflammation, and other metabolic pathways were quantified. We performed genetic association tests under additive mode of inheritance using linear regression models and found association of rs1421085_C allele with higher levels of body weight, soft lean mass (SLM), and total body water. Examination (using linear regression models under dominant mode of inheritance) of correlation among biomarkers and interaction with genotypes at the variant revealed that measures of these three body composition traits were found mediated by interaction between carrier genotypes (TC+CC) and measures of ghrelin, ApoA1, and ApoB48. Lean body mass (LBM), to which SLM contributes, is an important determinant of physical strength and is a focal point in studies on sarcopenia. Low LBM is known to be associated with higher risk of cardiometabolic disorders. Thus, the finding on the FTO variant as a genetic determinant of SLM via interaction with ghrelin, ApoA1, and ApoB48 is important.
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Affiliation(s)
| | | | - Anwar Mohammad
- Research Division, Dasman Diabetes Institute, Dasman, Kuwait
| | - Fadi Alkayal
- Research Division, Dasman Diabetes Institute, Dasman, Kuwait
| | - Motasem Melhem
- Research Division, Dasman Diabetes Institute, Dasman, Kuwait
| | - Jehad Abubaker
- Research Division, Dasman Diabetes Institute, Dasman, Kuwait
| | - Fahd Al-Mulla
- Research Division, Dasman Diabetes Institute, Dasman, Kuwait
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Rangel Peniche DB, Alemán Mateo H, Barreiro MDLAA, Ruiz Valenzuela RE, Ramírez-Torres M, Urquidez-Romero R. Differences in Body Composition in Older People from Two Regions of Mexico: Implications for Diagnoses of Sarcopenia and Sarcopenic Obesity. BIOMED RESEARCH INTERNATIONAL 2018; 2018:7538625. [PMID: 30105245 PMCID: PMC6076905 DOI: 10.1155/2018/7538625] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 05/13/2018] [Accepted: 06/13/2018] [Indexed: 11/17/2022]
Abstract
BACKGROUND Mexico is a country that is rich in ethnicity and cultural diversity, divided into three well-defined socioeconomic, ecological, and epidemiological areas. However, we do not know the influence that these factors may have on body composition. Therefore, this study was designed to assess body composition and compare appendicular skeletal muscle mass (ASM) in older people from two areas of the country. METHODS This is a cross-sectional study that included 430 subjects ≥60 years of age from northwestern and central Mexico. Body composition, including ASM, was measured by dual-energy X-ray absorptiometry, while anthropometry, handgrip strength, demographic variables, health status/chronic conditions, and energy expenditure data were all included. RESULTS Men and women from the northwestern region had 5.9 kg and 3.8 kg more body fat, respectively, and 3.9 kg more as a group than their counterparts from central Mexico (p ≤ 0.0001). While there were no significant differences across gender or region in terms of ASM, the older subjects from central Mexico had a significantly higher ASM index (ASMI) than the sample from the northwest. When ASM was adjusted for age, body weight, height, health status/chronic conditions, estimated energy expenditure, and demographic variables, the subjects from central Mexico had significantly higher adjusted mean values of ASM and ASMI than their counterparts from the northwest. CONCLUSION Older people from two regions of Mexico had significantly different estimates of body composition. Our findings highlight the importance of regionalizing estimates of ASM and ASMI if they are to be used for diagnostic purposes. It is also important to emphasize that appendicular skeletal muscle mass, or the ASM index, should be adjusted for other associated biological variables.
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Affiliation(s)
- Diana Beatriz Rangel Peniche
- Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, Campus Juriquilla. Boulevard de las Ciencias S/N, C.P. 76230 Querétaro, QRO, Mexico
| | - Heliodoro Alemán Mateo
- Departamento de Nutrición y Metabolismo, Coordinación de Nutrición, Centro de Investigación en Alimentación y Desarrollo, A.C. Carretera a La Victoria km 0.6, Apdo. Postal 1735, C.P. 83304 Hermosillo, SON, Mexico
| | - Ma. de los Angeles Aguilera Barreiro
- Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, Campus Juriquilla. Boulevard de las Ciencias S/N, C.P. 76230 Querétaro, QRO, Mexico
| | - Roxana E. Ruiz Valenzuela
- Departamento de Nutrición y Metabolismo, Coordinación de Nutrición, Centro de Investigación en Alimentación y Desarrollo, A.C. Carretera a La Victoria km 0.6, Apdo. Postal 1735, C.P. 83304 Hermosillo, SON, Mexico
- Departamento de Ciencias de la Salud, Universidad Iberoamericana Ciudad de México-Tijuana, Av. Centro Universitario 2501, Playas de Tijuana, C.P. 22500 Tijuana, BC, Mexico
| | - Maribel Ramírez-Torres
- Departamento de Nutrición y Metabolismo, Coordinación de Nutrición, Centro de Investigación en Alimentación y Desarrollo, A.C. Carretera a La Victoria km 0.6, Apdo. Postal 1735, C.P. 83304 Hermosillo, SON, Mexico
| | - Rene Urquidez-Romero
- Departamento de Ciencias de la Salud, Instituto de Ciencias Biomédicas, Universidad Autónoma de Ciudad Juárez, Ave. Plutarco Elías Calles #1210, Fovissste Chamizal, C.P. 32310 Ciudad Juárez, CHIH, Mexico
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Audano M, Pedretti S, Cermenati G, Brioschi E, Diaferia GR, Ghisletti S, Cuomo A, Bonaldi T, Salerno F, Mora M, Grigore L, Garlaschelli K, Baragetti A, Bonacina F, Catapano AL, Norata GD, Crestani M, Caruso D, Saez E, De Fabiani E, Mitro N. Zc3h10 is a novel mitochondrial regulator. EMBO Rep 2018; 19:embr.201745531. [PMID: 29507079 DOI: 10.15252/embr.201745531] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 02/02/2018] [Accepted: 02/07/2018] [Indexed: 01/01/2023] Open
Abstract
Mitochondria are the energy-generating hubs of the cell. In spite of considerable advances, our understanding of the factors that regulate the molecular circuits that govern mitochondrial function remains incomplete. Using a genome-wide functional screen, we identify the poorly characterized protein Zinc finger CCCH-type containing 10 (Zc3h10) as regulator of mitochondrial physiology. We show that Zc3h10 is upregulated during physiological mitochondriogenesis as it occurs during the differentiation of myoblasts into myotubes. Zc3h10 overexpression boosts mitochondrial function and promotes myoblast differentiation, while the depletion of Zc3h10 results in impaired myoblast differentiation, mitochondrial dysfunction, reduced expression of electron transport chain (ETC) subunits, and blunted TCA cycle flux. Notably, we have identified a loss-of-function mutation of Zc3h10 in humans (Tyr105 to Cys105) that is associated with increased body mass index, fat mass, fasting glucose, and triglycerides. Isolated peripheral blood mononuclear cells from individuals homozygotic for Cys105 display reduced oxygen consumption rate, diminished expression of some ETC subunits, and decreased levels of some TCA cycle metabolites, which all together derive in mitochondrial dysfunction. Taken together, our study identifies Zc3h10 as a novel mitochondrial regulator.
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Affiliation(s)
- Matteo Audano
- DiSFeB, Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - Silvia Pedretti
- DiSFeB, Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - Gaia Cermenati
- DiSFeB, Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - Elisabetta Brioschi
- DiSFeB, Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | | | | | - Alessandro Cuomo
- Department of Experimental Oncology, European Institute of Oncology (IEO), Milan, Italy
| | - Tiziana Bonaldi
- Department of Experimental Oncology, European Institute of Oncology (IEO), Milan, Italy
| | - Franco Salerno
- Neuromuscular Diseases and Neuroimmunology Unit, Foundation IRCCS C. Besta Neurological Institute, Milan, Italy
| | - Marina Mora
- Neuromuscular Diseases and Neuroimmunology Unit, Foundation IRCCS C. Besta Neurological Institute, Milan, Italy
| | - Liliana Grigore
- IRCSS Multimedica, Milan, Italy.,SISA Centre, Bassini Hospital, Cinisello Balsamo, Italy
| | | | - Andrea Baragetti
- DiSFeB, Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy.,SISA Centre, Bassini Hospital, Cinisello Balsamo, Italy
| | - Fabrizia Bonacina
- DiSFeB, Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - Alberico Luigi Catapano
- DiSFeB, Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy.,IRCSS Multimedica, Milan, Italy
| | - Giuseppe Danilo Norata
- DiSFeB, Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy.,SISA Centre, Bassini Hospital, Cinisello Balsamo, Italy.,School of Biomedical Sciences, Curtin Health Innovation Research Institute, Faculty of Health Science, Curtin University, Perth, WA, Australia
| | - Maurizio Crestani
- DiSFeB, Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - Donatella Caruso
- DiSFeB, Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - Enrique Saez
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - Emma De Fabiani
- DiSFeB, Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
| | - Nico Mitro
- DiSFeB, Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milan, Italy
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12
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Ingenbleek Y. Lean Body Mass Harbors Sensing Mechanisms that Allow Safeguarding of Methionine Homeostasis. Nutrients 2017; 9:nu9091035. [PMID: 28930162 PMCID: PMC5622795 DOI: 10.3390/nu9091035] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 09/14/2017] [Accepted: 09/16/2017] [Indexed: 01/16/2023] Open
Abstract
Protein-depleted states generate allosteric inhibition of liver cystathionine β-synthase (CBS), which governs the first enzymatic step of the transsulfuration cascade, resulting in upstream accretion of homocysteine (Hcy) in body fluids. A similar Hcy increase may arise from normal hepatocytes undergoing experimentally-induced impairment of betaine-homocysteine methyltransferase (BHTM) activity or from components of lean body mass (LBM) submitted to any inflammatory disorder. LBM comprises a composite agglomeration of extrarenal tissues characterized by naturally occurring BHTM inactivity. As a result of cellular injury, LBM releases high concentrations of Hcy into the extracellular space, contrasting with the disruption of normal remethylation pathways. Hyperhomocysteinemia acts as a biomarker, reflecting the severity of insult and operating as an alarm signal. Elevated Hcy levels constitute a precursor pool recognized by a CBS coding region that reacts to meet increased methionine requirements in LBM tissues, using its enhanced production in hepatocytes. Preservation of methionine homeostasis benefits from its high metabolic priority and survival value.
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Affiliation(s)
- Yves Ingenbleek
- Laboratory of Nutrition, Faculty of Pharmacy, University Louis Pasteur, F-67401 Strasbourg, France.
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13
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Comparisons of three different methods for defining sarcopenia: An aspect of cardiometabolic risk. Sci Rep 2017; 7:6491. [PMID: 28747657 PMCID: PMC5529503 DOI: 10.1038/s41598-017-06831-7] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 06/19/2017] [Indexed: 02/06/2023] Open
Abstract
Appraisal of muscle mass is important when considering the serious consequences of sarcopenia in an aging society. However, the associations between sarcopenia and its clinical outcomes might vary according to the method applied in its diagnosis. We compared the relationships between cardiometabolic risk parameters and sarcopenia defined according to three different diagnostic methods using dual-energy X-ray absorptiometry (DXA) and computed tomography (CT). Appendicular skeletal muscle mass (ASM) adjusted by height squared and BMI (ASM/height2 and ASM/BMI) measured using DXA and thigh muscle cross-sectional area (tmCSA) adjusted by weight (tmCSA/weight) measured using CT were used as indices of muscle mass. Sarcopenia was defined as two standard deviations below either the mean ASM/height2, ASM/BMI, or tmCSA/weight of a young reference group. ASM/BMI and tmCSA/weight showed a negative relationship with several components of metabolic syndrome and HOMA-IR, whereas ASM/height2 was positively associated with theses cardiometabolic risk factors. Logistic regression analyses demonstrated that ASM/BMI-defined sarcopenia was significantly associated with increased HOMA-IR (P = 0.01) and prevalence of visceral obesity (P = 0.03) and metabolic syndrome (P = 0.025), while ASM/height2- and tmCSA/weight-defined sarcopenia were not. ASM/BMI-defined sarcopenia exhibits a closer relationship with cardiometabolic risk factors than does ASM/height2- or tmCSA/weight-defined sarcopenia.
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14
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Sinclair M, Grossmann M, Hoermann R, Angus PW, Gow PJ. Testosterone therapy increases muscle mass in men with cirrhosis and low testosterone: A randomised controlled trial. J Hepatol 2016; 65:906-913. [PMID: 27312945 DOI: 10.1016/j.jhep.2016.06.007] [Citation(s) in RCA: 159] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 06/02/2016] [Accepted: 06/07/2016] [Indexed: 12/11/2022]
Abstract
BACKGROUND & AIMS Low testosterone and sarcopenia are common in men with cirrhosis and both are associated with increased mortality. Whether testosterone therapy in cirrhosis improves muscle mass and other outcomes is unknown. METHODS We conducted a 12-month, double-blinded, placebo-controlled trial of intramuscular testosterone undecanoate in 101 men with established cirrhosis and low serum testosterone (total testosterone <12nmol/L or free testosterone <230pmol/L) in a single tertiary centre. Body composition was assessed using dual-energy X-ray absorptiometry at baseline, 6 and 12months. RESULTS At study completion, appendicular lean mass was significant higher in testosterone-treated subjects, with a mean adjusted difference (MAD) of +1.69kg, (CI +0.40; +2.97kg, p=0.021). Secondary outcomes included a substantially higher total lean mass in the active group (MAD +4.74kg, CI +1.75; +7.74kg, p=0.008), matched by reduced fat mass (MAD -4.34kg, CI -6.65; -2.04, p<0.001). Total bone mass increased (MAD +0.08kg, CI +0.01; +0.15kg, p=0.009) as did bone mineral density at the femoral neck (MAD +0.287points, CI +0.140; +0.434, p<0.001). Haemoglobin was higher with testosterone therapy (MAD +10.2g/L, CI +1.50; +18.9g/L, p=0.041) and percentage glycosylated haemoglobin (HbA1c) lower (MAD -0.35%, CI -0.05; -0.54, p=0.028). Mortality was non-significantly lower in testosterone-treated patients (16% vs. 25.5%, p=0.352). There was no increase in adverse events in testosterone-treated subjects. CONCLUSION Testosterone therapy in men with cirrhosis and low serum testosterone safely increases muscle mass, bone mass and haemoglobin, and reduces fat mass and HbA1c. This is the first evidence-based therapy for sarcopenia in cirrhosis and thus requires larger-scale investigation into its potential impact on mortality. LAY SUMMARY Both low testosterone and muscle wasting are associated with increased risk of death in men with severe liver disease. Administering testosterone to men with liver disease who have low testosterone levels significantly increases their muscle mass. In addition, testosterone has non-muscle beneficial effects which may be able to increase survival in this population. CLINICAL TRIAL NUMBER Australian New Zealand Clinical Trials Registry trial number ACTRN 12614000526673.
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Affiliation(s)
- Marie Sinclair
- The University of Melbourne, Australia; Gastroenterology and Hepatology, Austin Health, Melbourne, Australia.
| | - Mathis Grossmann
- The University of Melbourne, Australia; Endocrinology, Austin Health, Melbourne, Australia
| | | | - Peter W Angus
- The University of Melbourne, Australia; Gastroenterology and Hepatology, Austin Health, Melbourne, Australia
| | - Paul J Gow
- The University of Melbourne, Australia; Gastroenterology and Hepatology, Austin Health, Melbourne, Australia
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15
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Association of body composition and eating behavior in the normal weight obese syndrome. Eat Weight Disord 2016; 21:99-106. [PMID: 26347355 DOI: 10.1007/s40519-015-0215-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Accepted: 08/08/2015] [Indexed: 01/17/2023] Open
Abstract
AIM Our aim was to identify psychological and behavioral characteristics of women affected by normal weight obese (NWO) syndrome. METHODS Anthropometric, body composition, eating behavior and physical activity were evaluated in 79 women. RESULTS 48.10 % of the subjects were found to be normalweight obese (NWO), 22.79 % normalweight lean (NWL), and 29.11 % pre-obese-obese (PreOB/OB) according to BMI and body composition. Significant differences (p < 0.001) among the groups were identified on analysis of the subscales of the Eating Disorder Inventory-2 (EDI-2), suggesting progressively increased presence of psychopathology relative to body composition. In a further analysis, results of the subscales of the EDI-2 were compared with body composition parameters, revealing that BMI co-varied with body composition variables and psychological responses. %TBFat co-varied exclusively with body composition variables (height, weight, BMI, KgTBFat, and a decrease of KgTBLean (R (2) = 0.96; Q (2) = 0.94). The NWO was discriminated from PreOB/OB group (compared to BMI) only on the basis of body composition variables (R (2) = 0.68; Q (2) = 0.60). CONCLUSION NWO women appeared to find themselves at a cognitive crossroads, attaining intermediate scores on the EDI-2 between normal weight lean women and pre-obese or obese women, in particular in terms of drive for thinness and body dissatisfaction. The NWO syndrome not only conveys an increased risk of cardiovascular and metabolic disease, but may also significantly overlap with other eating disorders in terms of psychological symptomatology, the correct identification of which may be the key in the successful management of these patients. TRIAL REGISTRATION ClinicalTrials.gov NCT01890070.
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16
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Costa TMDRL, Costa FM, Moreira CA, Rabelo LM, Boguszewski CL, Borba VZC. Sarcopenia in COPD: relationship with COPD severity and prognosis. J Bras Pneumol 2015; 41:415-21. [PMID: 26578132 PMCID: PMC4635087 DOI: 10.1590/s1806-37132015000000040] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Accepted: 07/14/2015] [Indexed: 12/31/2022] Open
Abstract
OBJECTIVE To evaluate the prevalence of sarcopenia in COPD patients, as well as to determine whether sarcopenia correlates with the severity and prognosis of COPD. METHODS A cross-sectional study with COPD patients followed at the pulmonary outpatient clinic of our institution. The patients underwent dual-energy X-ray absorptiometry. The diagnosis of sarcopenia was made on the basis of the skeletal muscle index, defined as appendicular lean mass/height2 only for low-weight subjects and adjusted for fat mass in normal/overweight subjects. Disease severity (COPD stage) was evaluated with the Global Initiative for Chronic Obstructive Lung Disease (GOLD) criteria. The degree of obstruction and prognosis were determined by the Body mass index, airflow Obstruction, Dyspnea, and Exercise capacity (BODE) index. RESULTS We recruited 91 patients (50 females), with a mean age of 67.4 ± 8.7 years and a mean BMI of 25.8 ± 6.1 kg/m2. Sarcopenia was observed in 36 (39.6%) of the patients, with no differences related to gender, age, or smoking status. Sarcopenia was not associated with the GOLD stage or with FEV1 (used as an indicator of the degree of obstruction). The BMI, percentage of body fat, and total lean mass were lower in the patients with sarcopenia than in those without (p < 0.001). Sarcopenia was more prevalent among the patients in BODE quartile 3 or 4 than among those in BODE quartile 1 or 2 (p = 0.009). The multivariate analysis showed that the BODE quartile was significantly associated with sarcopenia, regardless of age, gender, smoking status, and GOLD stage. CONCLUSIONS In COPD patients, sarcopenia appears to be associated with unfavorable changes in body composition and with a poor prognosis.
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Affiliation(s)
- Tatiana Munhoz da Rocha Lemos Costa
- Serviço de Endocrinologia e Metabologia - SEMPR - Hospital de Clínicas, Universidade Federal do Paraná, Curitiba, Brasil
- Programa de Pós-Graduação em Medicina Interna, Departamento de Medicina Interna, Universidade Federal do Paraná, Curitiba, Brasil
| | - Fabio Marcelo Costa
- Serviço de Pneumologia, Hospital de Clínicas, Universidade Federal do Paraná, Curitiba, Brasil
| | - Carolina Aguiar Moreira
- Serviço de Endocrinologia e Metabologia - SEMPR - Hospital de Clínicas, Universidade Federal do Paraná, Curitiba, Brasil
- Programa de Pós-Graduação em Medicina Interna, Departamento de Medicina Interna, Universidade Federal do Paraná, Curitiba, Brasil
| | - Leda Maria Rabelo
- Serviço de Pneumologia, Hospital de Clínicas, Universidade Federal do Paraná, Curitiba, Brasil
| | - César Luiz Boguszewski
- Serviço de Endocrinologia e Metabologia - SEMPR - Hospital de Clínicas, Universidade Federal do Paraná, Curitiba, Brasil
| | - Victória Zeghbi Cochenski Borba
- Serviço de Endocrinologia e Metabologia - SEMPR - Hospital de Clínicas, Universidade Federal do Paraná, Curitiba, Brasil
- Programa de Pós-Graduação em Medicina Interna, Departamento de Medicina Interna, Universidade Federal do Paraná, Curitiba, Brasil
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Tsigos C, Stefanaki C, Lambrou GI, Boschiero D, Chrousos GP. Stress and inflammatory biomarkers and symptoms are associated with bioimpedance measures. Eur J Clin Invest 2015; 45:126-34. [PMID: 25431352 DOI: 10.1111/eci.12388] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 11/25/2014] [Indexed: 12/20/2022]
Abstract
BACKGROUND This large cross-sectional, multi-centre study evaluated the association of body composition measurements by a novel dual frequency bioimpedance device (BIA-ACC) with chronic stress/inflammation biomarkers and the presence of medically unexplained symptoms (MUS). MATERIALS AND METHODS Participants were adult Caucasians of both sexes and included 10,416 lean subjects with no MUS (Group A), 58,710 lean subjects with MUS (Group B) and 30,445 overweight/obese subjects with no MUS and excessive fat mass (FM) (Group C). RESULTS Total body extracellular water (ECW) was higher, while intracellular water (ICW) was lower in Group B than both other groups (P < 0.01). Group A had significantly lower FM and higher skeletal mass (SK) and phase angle (PA) than Group B and lower circulating high sensitivity (hs) CRP levels than both other groups. hsCRP was higher in Group C than Group A though (P < 0.01). Salivary cortisol in Group B was lower in the morning and higher in the evening than both other groups (P < 0.001), indicating circadian rhythm obliteration or reversal in this group. ECW correlated positively with serum hsCRP and 8 p.m. salivary cortisol, but negatively with 8 a.m. salivary cortisol, while PA correlated positively with 8 a.m. and negatively with 8 p.m. salivary cortisol and serum hsCRP. Both 8 a.m. and 8 p.m. salivary cortisol and serum hsCRP were associated with the presence of MUS and BIA-ACC measurements, including ECW, ICW, FM, SK and PA. CONCLUSIONS MUS is an index of chronic stress and inflammation and BIA-ACC may provide a useful, bloodless and rapid tool in the clinical setting, distinguishing patients with chronic stress/inflammation from healthy subjects and monitoring their response to treatment.
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Affiliation(s)
- Constantine Tsigos
- School of Health Sciences and Education, Harokopio University of Athens, Athens, Greece
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18
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Hellmanns K, McBean K, Thoirs K. Magnetic Resonance Imaging in the measurement of whole body muscle mass: A comparison of interval gap methods. Radiography (Lond) 2015. [DOI: 10.1016/j.radi.2014.09.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Abstract
Osteoporosis is a skeletal disorder characterized by low bone mineral density (BMD) and an increased susceptibility to fractures. Evidence from genetic studies indicates that BMD, a complex quantitative trait with a normal distribution, is genetically controlled. Genome-wide association studies (GWAS) as well as studies using candidate gene approaches have identified single-nucleotide polymorphisms (SNPs) that are associated with BMD, osteoporosis and osteoporotic fractures. These SNPs have been mapped close to or within genes including those encoding WNT/β-catenin signaling proteins. Understanding the genetics of osteoporosis will help to identify novel candidates for diagnostic and therapeutic targets. Genetic factors are also important for the development of sarcopenia, which is characterized by a loss of lean body mass, and obesity, which is characterized by high fat mass. Hence, in this review, we discuss the genetic factors, identified by genetic studies, which regulate the body components related to osteoporosis, sarcopenia, and obesity.
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Affiliation(s)
- Tomohiko Urano
- Department of Geriatric Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
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20
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Di Renzo L, Marsella LT, Sarlo F, Soldati L, Gratteri S, Abenavoli L, De Lorenzo A. C677T gene polymorphism of MTHFR and metabolic syndrome: response to dietary intervention. J Transl Med 2014; 12:329. [PMID: 25432492 PMCID: PMC4260200 DOI: 10.1186/s12967-014-0329-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Accepted: 11/12/2014] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Methylenetetrahydrofolate reductase (MTHFR) gene polymorphisms were found associated with body mass index (BMI)-defined obesity and lean mass. The aim of our study was to examine the role of the C677T MTHFR gene polymorphism in the response to diet in the management of metabolic syndrome. We investigated the body composition and metabolic factor changes after an hysocaloric balanced diet (HBD), in Italian obese women affected by metabolic syndrome (MS). METHODS Forty four obese women affected by MS were eligible for the study. A HBD for 12 weeks was assigned. Study participation included a complete screening for dietary habits, anthropometry, body composition, blood biochemical markers and C677T MTHFR polymorphism genotyping. The study has been registrated by ClinicalTrials.gov Id: NCT01890070. RESULTS The highest number of responders to HBD nutritional intervention were T(-) carriers (p ≤ 0.05). In the 81% of the total population a loss of Total Body Lean was observed. A significative loss (p ≤ 0.05) of Total Body Lean was observed in the 47% of T(-) carriers and in the 53% of T(+) carriers. Diastolic and systolic blood pressure, and waist circumference were reduced (p ≤ 0.05). The prevalence of MS parameters decreased by 84% for systolic and diastolic blood pressure; 79,5% for HDL cholesterol, 82% for fasting glucose and 77% for triglycerides. CONCLUSIONS MTHFR genetic variations analysis would be an innovative tool for the nutritional assessment. Our data provide the basis for personalized dietary recommendations based on the individual's genetic makeup and nutritional status. TRIAL REGISTRATION The study has been registrated by ClinicalTrials.gov Id: NCT01890070.
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Affiliation(s)
- Laura Di Renzo
- Division of Clinical Nutrition and Nutrigenomics, Department of Biomedicine and Prevention, University of Rome "Tor Vergata", Rome, 00133, Italy.
| | - Luigi Tonino Marsella
- Division of Legal Medicine and Social Security, Department of Biomedicine and Prevention, University of Rome "Tor Vergata", Rome, 00133, Italy.
| | - Francesca Sarlo
- Department of Agriculture, University of Naples "Federico II", Portici, 80055 (Na), Italy.
| | - Laura Soldati
- Department of Health Sciences, University of Milan, Milan, Italy.
| | - Santo Gratteri
- Department of Surgery and Medical Science, University "Magna Græcia", Germaneto, (CZ), 88100, Italy.
| | - Ludovico Abenavoli
- Department of Health Science, University "Magna Græcia", Germaneto, (CZ), 88100, Italy.
| | - Antonino De Lorenzo
- Division of Clinical Nutrition and Nutrigenomics, Department of Biomedicine and Prevention, University of Rome "Tor Vergata", Rome, 00133, Italy.
- Clinic "Nuova Annunziatella", Rome, 00147, Italy.
- I.N.Di.M, National Institute for Mediterranean Diet and Nutrigenomic, Amantea, (CS), 87032, Italy.
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Bosy-Westphal A, Müller MJ. Identification of skeletal muscle mass depletion across age and BMI groups in health and disease--there is need for a unified definition. Int J Obes (Lond) 2014; 39:379-86. [PMID: 25174451 DOI: 10.1038/ijo.2014.161] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Revised: 08/04/2014] [Accepted: 08/13/2014] [Indexed: 12/19/2022]
Abstract
Although reduced skeletal muscle mass is a major predictor of impaired physical function and survival, it remains inconsistently diagnosed to a lack of standardized diagnostic approaches that is reflected by the variable combination of body composition indices and cutoffs. In this review, we summarized basic determinants of a normal lean mass (age, gender, fat mass, body region) and demonstrate limitations of different lean mass parameters as indices for skeletal muscle mass. A unique definition of lean mass depletion should be based on an indirect or direct measure of skeletal muscle mass normalized for height (fat-free mass index (FFMI), appendicular or lumbal skeletal muscle index (SMI)) in combination with fat mass. Age-specific reference values for FFMI or SMI are more advantageous because defining lean mass depletion on the basis of total FFMI or appendicular SMI could be misleading in the case of advanced age due to an increased contribution of connective tissue to lean mass. Mathematical modeling of a normal lean mass based on age, gender, fat mass, ethnicity and height can be used in the absence of risk-defined cutoffs to identify skeletal muscle mass depletion. This definition can be applied to identify different clinical phenotypes like sarcopenia, sarcopenic obesity or cachexia.
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Affiliation(s)
- A Bosy-Westphal
- 1] Institute of Nutritional Medicine, University Hohenheim, Stuttgart, Germany [2] Institute of Human Nutrition and Food Science, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - M J Müller
- Institute of Human Nutrition and Food Science, Christian-Albrechts-University of Kiel, Kiel, Germany
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22
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Urano T, Shiraki M, Sasaki N, Ouchi Y, Inoue S. Large-scale analysis reveals a functional single-nucleotide polymorphism in the 5'-flanking region of PRDM16 gene associated with lean body mass. Aging Cell 2014; 13:739-43. [PMID: 24863034 PMCID: PMC4326941 DOI: 10.1111/acel.12228] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2014] [Indexed: 12/11/2022] Open
Abstract
Genetic factors are important for the development of sarcopenia, a geriatric disorder characterized by low lean body mass. The aim of this study was to search for novel genes that regulate lean body mass in humans. We performed a large-scale search for 250K single-nucleotide polymorphisms (SNPs) associated with bone mineral density (BMD) using SNP arrays in 1081 Japanese postmenopausal women. We focused on an SNP (rs12409277) located in the 5′-flanking region of the PRDM16 (PRD1-BF-1-RIZ1 homologous domain containing protein 16) gene that showed a significant P value in our screening. We demonstrated that PRDM16 gene polymorphisms were significantly associated with total body BMD in 1081 postmenopausal Japanese women. The rs12409277 SNP affected the transcriptional activity of PRDM16. The subjects with one or two minor allele(s) had a higher lean body mass than the subjects with two major alleles. Genetic analyses uncovered the importance of the PRDM16 gene in the regulation of lean body mass.
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Affiliation(s)
- Tomohiko Urano
- Geriatric Medicine Graduate School of Medicine The University of Tokyo Tokyo Japan
- Anti‐Aging Medicine Graduate School of Medicine The University of Tokyo Tokyo Japan
| | - Masataka Shiraki
- Research Institute and Practice for Involutional Diseases Nagano Japan
| | - Noriko Sasaki
- Geriatric Medicine Graduate School of Medicine The University of Tokyo Tokyo Japan
- Anti‐Aging Medicine Graduate School of Medicine The University of Tokyo Tokyo Japan
| | - Yasuyoshi Ouchi
- Geriatric Medicine Graduate School of Medicine The University of Tokyo Tokyo Japan
| | - Satoshi Inoue
- Geriatric Medicine Graduate School of Medicine The University of Tokyo Tokyo Japan
- Anti‐Aging Medicine Graduate School of Medicine The University of Tokyo Tokyo Japan
- Research Center for Genomic Medicine Saitama Medical School Saitama Japan
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González F, Sia CL, Bearson DM, Blair HE. Hyperandrogenism induces a proinflammatory TNFα response to glucose ingestion in a receptor-dependent fashion. J Clin Endocrinol Metab 2014; 99:E848-54. [PMID: 24512496 PMCID: PMC4010708 DOI: 10.1210/jc.2013-4109] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
CONTEXT Hyperandrogenism and inflammation are related in polycystic ovary syndrome (PCOS). Hyperandrogenemia can induce inflammation in reproductive-age women, but the mechanism for this phenomenon is unclear. OBJECTIVE We examined the in vivo and in vitro effects of hyperandrogenism on mononuclear cell (MNC)-derived androgen receptor (AR) status and TNFα release. DESIGN This study combined a randomized, controlled, double-blind protocol with laboratory-based cell culture experiments. SETTING This work was performed in an academic medical center. PARTICIPANTS Lean, healthy, reproductive-age women were treated with 130 mg of dehydroepiandrosterone (DHEA) or placebo (n = 8 subjects each) for 5 days and also provided untreated fasting blood samples (n = 12 subjects) for cell culture experiments. MAIN OUTCOME MEASURES AR mRNA content and TNFα release were measured before and after DHEA administration in the fasting state and 2 hours after glucose ingestion. TNFα release in the fasting state was also measured in cultured MNCs exposed to androgens with or without flutamide preincubation. RESULTS At baseline, subjects receiving DHEA or placebo exhibited no significant difference in androgens and TNFα release from MNCs before and after glucose ingestion. Compared with placebo, DHEA administration raised levels of T, androstenedione, and DHEA sulfate, and increased MNC-derived AR mRNA content and TNFα release in the fasting state and in response to glucose ingestion. Compared with MNC exposure to baseline concentrations of DHEA (175 ng/dL) or T (50 ng/dL), the absolute change in TNFα release increased after exposure to T concentrations of 125 and 250 ng/dL and a DHEA concentration of 1750 ng/dL. Preincubation with flutamide reduced the TNFα response by ≥ 60% across all T concentrations. CONCLUSION Androgen excess in vivo and in vitro comparable to what is present in PCOS increases TNFα release from MNCs of lean healthy reproductive-age women in a receptor-dependent fashion. Hyperandrogenemia activates and sensitizes MNCs to glucose in this population.
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Affiliation(s)
- Frank González
- Department of Obstetrics and Gynecology (F.G., C.L.S.), Indiana University School of Medicine, Indianapolis, Indiana 46202; and Department of Laboratory Medicine and Pathology (D.M.B., H.E.B.), College of Medicine, Mayo Clinic, Rochester, Minnesota 55905
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Development of a single-frequency bioimpedance prediction equation for fat-free mass in an adult Indigenous Australian population. Eur J Clin Nutr 2014; 69:28-33. [PMID: 24755929 DOI: 10.1038/ejcn.2014.54] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Revised: 12/17/2013] [Accepted: 12/19/2013] [Indexed: 11/08/2022]
Abstract
BACKGROUND/OBJECTIVES To describe the development of a single-frequency bioimpedance prediction equation for fat-free mass (FFM) suitable for adult Aboriginal and Torres Strait Islander peoples with and without diabetes or indicators of chronic kidney disease (CKD). SUBJECTS/METHODS FFM was measured by whole-body dual-energy X-ray absorptiometry in 147 adult Indigenous Australians. Height, weight, body circumference and resistance were also measured. Adults with and without diabetes and indicators of CKD were examined. A random split sample with internal cross-validation approach was used to predict and subsequently validate FFM using resistance, height, weight, age and gender against measured FFM. RESULTS Among 147 adults with a median body mass index of 31 kg/m(2), the final model of FFM was FFM (kg)=0.432 (height, cm(2)/resistance, ohm)-0.086 (age, years)+0.269 (weight, kg)-6.422 (if female)+16.429. Adjusted R(2) was 0.94 and the root mean square error was 3.33 kg. The concordance was high (rc=0.97) between measured and predicted FFM across a wide range of FFM (31-85 kg). CONCLUSIONS In the context of the high burden of diabetes and CKD among adult Indigenous Australians, this new equation for FFM was both accurate and precise and based on easily acquired variables (height, weight, age, gender and resistance) among a heterogeneous adult cohort.
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Alemán-Mateo H, Ruiz Valenzuela RE. Skeletal muscle mass indices in healthy young Mexican adults aged 20-40 years: implications for diagnoses of sarcopenia in the elderly population. ScientificWorldJournal 2014; 2014:672158. [PMID: 24688417 PMCID: PMC3933398 DOI: 10.1155/2014/672158] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Accepted: 12/15/2013] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND AND OBJECTIVES Skeletal muscle and skeletal muscle indices in young adults from developing countries are sparse. Indices and the corresponding cut-off points can be a reference for diagnoses of sarcopenia. This study assessed skeletal muscle using dual-energy X-ray absorptiometry (DXA) in healthy male and female subjects aged 20-40 years and compared their appendicular skeletal muscle mass (ASM) and total-body skeletal muscle (TBSM) indices using certain cut-off points published in the literature. METHODS A sample of 216 healthy adults men and women from northwest Mexico was included. Body composition was assessed by DXA and several published DXA-derived skeletal muscle indices were compared. RESULTS Both, ASM and TBSM were higher in men compared to the women group (23.0 ± 3.4 versus 15.9 ± 1.6 kg; P < 0.05 and 26.5 ± 4.1 versus 16.9 ± 1.9 kg; P < 0.05, resp.). These differences were also valid for both indices. When derived cut-off points were compared with the most reported indices, significant differences were found. INTERPRETATION AND CONCLUSION Published cut-off points from Caucasians are higher than cut-off point derived in this sample of Mexican subjects. The new DXA-derived cut-off points for ASM proposed herein may improve diagnoses of sarcopenia in the geriatric Mexican population.
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Affiliation(s)
- H. Alemán-Mateo
- Coordinación de Nutrición, Centro de Investigación en Alimentación y Desarrollo (CIAD), A.C. Carretera a La Victoria Km. 0.6, 83304 Hermosillo, Sonora, Mexico
| | - Roxana E. Ruiz Valenzuela
- Coordinación de Nutrición, Centro de Investigación en Alimentación y Desarrollo (CIAD), A.C. Carretera a La Victoria Km. 0.6, 83304 Hermosillo, Sonora, Mexico
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Valenzuela RER, Ponce JA, Morales-Figueroa GG, Muro KA, Carreón VR, Alemán-Mateo H. Insufficient amounts and inadequate distribution of dietary protein intake in apparently healthy older adults in a developing country: implications for dietary strategies to prevent sarcopenia. Clin Interv Aging 2013; 8:1143-8. [PMID: 24039411 PMCID: PMC3770624 DOI: 10.2147/cia.s49810] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Both low dietary protein intake and inadequate distribution of protein over the three mealtimes have been reported in older Caucasian adults, but the association between protein intake at each meal and muscle mass has not been studied. The purpose of this study was to evaluate dietary protein intake and distribution by mealtimes, and to explore their association with appendicular skeletal muscle mass in apparently healthy older adults. METHODS This was a cross-sectional pilot study that included 78 people over the age of 60 years. Caloric and protein intake were estimated on the basis of three nonconsecutive 24-hour diet recalls and appendicular skeletal muscle mass by dual-energy X-ray absorptiometry. RESULTS Men consumed 13.4 g of protein/day more than women (P < 0.05). The estimated value of dietary protein intake was 0.9 g/kg/day. In this sample, 28% of subjects did not cover 100% of the dietary reference intake for protein. Lower consumption of dietary protein was found at breakfast and dinnertime compared with the recommended amount of 25-30 g (P < 0.05). Also, the study observed that appendicular skeletal muscle mass in men and women who consumed <25 g of protein at each mealtime was different from that found in the group that consumed >25 g of protein at one, two, or three mealtimes. CONCLUSION While protein intake was higher than current recommendations, it failed to achieve the values reported as necessary to prevent sarcopenia. In addition, there was under-consumption of protein per mealtime, especially at breakfast and dinner.
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Affiliation(s)
- Roxana E Ruiz Valenzuela
- Nutrition and Metabolism Department, Division of Nutrition, Research Center for Food and Development, Hermosillo, Sonora, México
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Cirnigliaro CM, La Fountaine MF, Emmons R, Kirshblum SC, Asselin P, Spungen AM, Bauman WA. Prediction of limb lean tissue mass from bioimpedance spectroscopy in persons with chronic spinal cord injury. J Spinal Cord Med 2013; 36:443-53. [PMID: 23941792 PMCID: PMC3739894 DOI: 10.1179/2045772313y.0000000108] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
BACKGROUND Bioimpedance spectroscopy (BIS) is a non-invasive, simple, and inexpensive modality that uses 256 frequencies to determine the extracellular volume impedance (ECVRe) and intracellular volume impedance (ICVRi) in the total body and regional compartments. As such, it may have utility as a surrogate measure to assess lean tissue mass (LTM). OBJECTIVE To compare the relationship between LTM from dual-energy X-ray absorptiometry (DXA) and BIS impedance values in spinal cord injury (SCI) and able-bodied (AB) control subjects using a cross-sectional research design. METHODS In 60 subjects (30 AB and 30 SCI), a total body DXA scan was used to obtain total body and leg LTM. BIS was performed to measure the impedance quotient of the ECVRe and ICVRi in the total body and limbs. RESULTS BIS-derived ECVRe yielded a model for LTM in paraplegia, tetraplegia, and control for the right leg (RL) (R(2) = 0.75, standard errors of estimation (SEE) = 1.02 kg, P < 0.0001; R(2) = 0.65, SEE = 0.91 kg, P = 0.0006; and R(2) = 0.54, SEE = 1.31 kg, P < 0.0001, respectively) and left leg (LL) (R(2) = 0.76, SEE = 1.06 kg, P < 0.0001; R(2) = 0.64, SEE = 0.83 kg, P = 0.0006; and R(2) = 0.54, SEE = 1.34 kg, P < 0.0001, respectively). The ICVRi was similarly predictive of LTM in paraplegia, tetraplegia, and AB controls for the RL (R(2) = 0.85, SEE = 1.31 kg, P < 0.0001; R(2) = 0.52, SEE = 0.95 kg, P = 0.003; and R(2) = 0.398, SEE = 1.46 kg, P = 0.0003, respectively) and LL (R(2) = 0.62, SEE = 1.32 kg, P = 0.0003; R(2) = 0.57, SEE = 0.91 kg, P = 0.002; and R(2) = 0.42, SEE = 1.31 kg, P = 0.0001, respectively). CONCLUSION Findings demonstrate that the BIS-derived impedance quotients for ECVRe and ICVRi may be used as surrogate markers to track changes in leg LTM in persons with SCI.
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Affiliation(s)
- Christopher M. Cirnigliaro
- National Center of Excellence for the Medical Consequences of Spinal Cord Injury, James J. Peters VA Medical Center, Bronx, NY, USA,Correspondence to: Christopher M. Cirnigliaro, Kessler Institute for Rehabilitation: Rm. L052m, 1199 Pleasant Valley Way, West Orange, NJ 07052, USA.
| | - Michael F. La Fountaine
- National Center of Excellence for the Medical Consequences of Spinal Cord Injury, James J. Peters VA Medical Center, Bronx, NY, USA; Medical & Spinal Cord Injury Services, The James J. Peters VA Medical Center, Bronx, NY, USA; Seton Hall University, South Orange, NJ, USA; and Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Steven C. Kirshblum
- Kessler Institute for Rehabilitation, West Orange, NJ, USA; and Department of Physical Medicine and Rehabilitation, New Jersey Medical School, Newark, NJ, USA
| | - Pierre Asselin
- National Center of Excellence for the Medical Consequences of Spinal Cord Injury, James J. Peters VA Medical Center, Bronx, NY, USA
| | - Ann M. Spungen
- National Center of Excellence for the Medical Consequences of Spinal Cord Injury, James J. Peters VA Medical Center, Bronx, NY, USA; Medical & Spinal Cord Injury Services, The James J. Peters VA Medical Center, Bronx, NY, USA; and Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - William A. Bauman
- National Center of Excellence for the Medical Consequences of Spinal Cord Injury, James J. Peters VA Medical Center, Bronx, NY, USA; Medical & Spinal Cord Injury Services, The James J. Peters VA Medical Center, Bronx, NY, USA; and Icahn School of Medicine at Mount Sinai, New York, NY, USA
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Hai R, Zhang L, Pei Y, Zhao L, Ran S, Han Y, Zhu X, Shen H, Tian Q, Deng H. Bivariate genome-wide association study suggests that the DARC gene influences lean body mass and age at menarche. SCIENCE CHINA-LIFE SCIENCES 2012; 55:516-20. [DOI: 10.1007/s11427-012-4327-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Accepted: 03/20/2012] [Indexed: 02/07/2023]
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Mitchell SJ, Hilmer SN, Kirkpatrick CMJ, Hansen RD, Williamson DA, Singh NA, Finnegan TP, Allen BJ, Diamond TH, Diwan AD, Lloyd BD, Smith EUR, Fiatarone Singh MA. Estimation of lean body weight in older women with hip fracture. J Nutr Health Aging 2012; 16:188-92. [PMID: 22323357 DOI: 10.1007/s12603-011-0100-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
OBJECTIVE Lean body weight (LBW) decreases with age while total body fat increases, resulting in altered drug pharmacokinetics. A semi-mechanistic equation estimating LBW using height, weight and sex has been developed for potential use across a wide range of body compositions. The aim of this study was to determine the ability of the LBW equation to estimate dual energy x-ray absorptiometry-derived fat free mass (FFM(DXA)) in a population of older women with recent hip fracture. METHODS Baseline, four and 12 month data obtained from 23 women enrolled in the Sarcopenia and Hip Fracture study were pooled to give 58 measurements. LBW was estimated using the equation: LBW (kg) = (9270 x Wt) / (8780 + (244 x BMI)). Body composition was classified as: 'normal' (BMI <25kg/m(2) and not sarcopenic), 'overweight-obese' (BMI >25kg/m(2) and not sarcopenic), 'sarcopenic' (sarcopenic and BMI <25kg/m(2)), or 'sarcopenic-obese' (sarcopenic and BMI >25kg/m(2)). The ability of the LBW equation to predict FFMDXA was determined graphically using Bland-Altman plots and quantitatively using the method of Sheiner and Beal. RESULTS The mean ± SD age of female participants women was 83±7 years (n=23). Sarcopenia was frequently observed (65.2%). Bland-Altman plots demonstrated an underestimation by the LBW equation compared to FFMDXA. The bias (95% CI) and precision (95% CI) calculated using the method of Sheiner and Beal was 0.5kg (-0.7, 1.66kg) and 4.4kg (-3.7, 12.4kg) respectively for pooled data. CONCLUSION This equation can be used to easily calculate LBW. When compared to FFMDXA, the LBW equation resulted in a small underestimation on average in this population of women with recent hip fracture. The degree of bias may not be clinically important although further studies of larger heterogeneous cohorts are needed to investigate and potentially improve the accuracy of this predictive equation in larger clinical cohorts.
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Affiliation(s)
- S J Mitchell
- S.J. Mitchell, Sydney Medical School, University of Sydney, Sydney, NSW, Australia
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Aslani A, Roach PJ, Smith RC. Long-term changes in body composition after pancreaticoduodenectomy. ANZ J Surg 2012; 82:173-8. [PMID: 22510129 DOI: 10.1111/j.1445-2197.2011.05970.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND The Whipple's procedure (WP) is a major operation that adds a further demand on the body's nutritional reserves and therefore body composition after the effect of pancreatic cancer. The aim was to document changes in body composition changes that occur during the first six months after a WP for a pancreatic cancer malignancy. METHODS Twenty-seven (14 males, 13 females) consecutive WP patients had body composition measured at baseline and then at 2, 5, 14 and 26 weeks after surgery. These included; anthropometric measure (weight, skin folds and arm muscle area (AMA)), total body measures of protein (TBP), potassium (TBK), water (TBW) and fat mass (FM). Changes were compared using repeated measures analysis of variance. RESULTS Hospital nutritional care maintained TBP and TBK but at 2 weeks there was a loss of FM (P= 0.037). The nadir of weight loss (P < 0.001) occurred at 5 weeks because of losses of protein (P= 0.007), fat (P < 0.001) and potassium (P= 0.045) but not water. Although weight and FM were still significantly less than baseline measures at 26 weeks weight, TBP, TBK and AMA were not significantly different to preoperative values. CONCLUSIONS Although at 6 months, important measures of the metabolically functioning tissue, TBP and TBK, have returned to preoperative values significant losses occurred during the first 3 weeks after discharge from hospital and FM did not return to preoperative values. These results suggest the need to improve post-discharge nutritional care.
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Affiliation(s)
- Alireza Aslani
- Department of Nuclear Medicine, The University of Sydney, New South Wales, Australia
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Fuku N, Mori S, Murakami H, Gando Y, Zhou H, Ito H, Tanaka M, Miyachi M. Association of 29C>T polymorphism in the transforming growth factor-β1 gene with lean body mass in community-dwelling Japanese population. Geriatr Gerontol Int 2011; 12:292-7. [PMID: 22066986 DOI: 10.1111/j.1447-0594.2011.00768.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
AIM Sarcopenia is the significant degenerative loss of skeletal muscle mass and strength associated with aging, and it is one of the components of frailty. We previously reported an association between the 29C>T polymorphism in the transforming growth factor-β1 gene (rs1800470) and the prevalence of vertebral fractures in subjects with postmenopausal osteoporosis. The association was not attributable to bone mineral density, which suggests that polymorphism influences some aspects of bone quality that affects strength and/or frailty rather than bone strength itself. Thus, we examined the relationship between genetic polymorphism and lean body mass in a Japanese population. METHODS A total of 479 adults comprising 143 men and 336 women, age 23 to 85 years, participated in the present study. Fat-free mass was measured by dual energy X-ray absorptiometry, and the relative skeletal muscle index was calculated as the ratio of appendicular (sum of arms and legs) fat-free mass to the square of height. RESULTS Total, leg, and appendicular fat-free mass as well as the relative skeletal muscle index were significantly lower in male subjects with CT/TT genotypes compared to those with CC genotype. Female subjects did not show any genotype-dependent differences when analyzed as a group, but when those without menstruation (postmenopausal women) were analyzed, arm fat-free mass was significantly lower in the CT/TT genotypes than in the CC genotype. CONCLUSIONS T allele of the 29C>T polymorphism in the transforming growth factor-β1 gene might be a risk factor of sarcopenia in a Japanese population.
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Affiliation(s)
- Noriyuki Fuku
- Department of Genomics for Longevity and Health, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
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Genome-wide association study of copy number variation identified gremlin1 as a candidate gene for lean body mass. J Hum Genet 2011; 57:33-7. [DOI: 10.1038/jhg.2011.125] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Oliveira R, Bottaro M, Júnior J, Farinatti P, Bezerra L, Lima R. Identification of sarcopenic obesity in postmenopausal women: a cutoff proposal. Braz J Med Biol Res 2011; 44:1171-6. [DOI: 10.1590/s0100-879x2011007500135] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2010] [Accepted: 09/29/2011] [Indexed: 11/22/2022] Open
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Body fat and fat-free mass measured by bioelectric impedance spectroscopy and dual-energy X-ray absorptiometry in obese and non-obese adults. Br J Nutr 2011; 107:1192-200. [PMID: 21878141 DOI: 10.1017/s000711451100417x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The aim of the present study was to compare body fat mass (FM) and fat-free mass (FFM) estimates by bioelectric impedance spectroscopy (BIS), with respective estimates by dual-energy X-ray absorptiometry (DXA), in obese and non-obese subjects. Body composition was measured in ninety-three obese and non-obese men and women by BIS device, BodyScout (Fresenius Kabi, Bad Homburg, Germany) and DXA device, Lunar iDXA (GE Healthcare, Madison, WI, USA). Mean difference between the methods was analysed by t tests, and Bland-Altman plots were generated to further examine the differences between the methods. Mean difference between the estimates by DXA and BIS (ΔDXA - BIS and Bland-Altman 95 % limits of agreement) were as follows: FM 4·1 ( - 2·9, 11·2) kg and 4·5 ( - 2·9, 11·8) %, FFM - 4·1 ( - 11·2, 2·9) kg and - 4·5 ( - 11·9, 2·9) %, indicating large inter-individual variation and statistically significant underestimation of FM and overestimation of FFM by BIS, as compared to DXA. The underestimation of FMkg (FM measured in kg) and overestimation of FFMkg (FFM measured in kg) were more pronounced in men than in women, and the underestimation of FM% (FM measured in percent) and overestimation of FFM% (FFM measured in percent) were more pronounced in normal weight (BMI = 20·0-24·9 kg/m2) than in overweight and obese (BMI ≥ 25·0 kg/m2) subjects. BIS may be suitable for classification of a population into groups according to FM and FFM. However, the large inter-individual variation suggests that this BIS device with the proprietary software is insufficient for estimation of single individual body FM and FFM.
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Pruna L, Chatelin J, Pascal-Vigneron V, Kaminsky P. Regional body composition and functional impairment in patients with myotonic dystrophy. Muscle Nerve 2011; 44:503-8. [DOI: 10.1002/mus.22099] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/07/2011] [Indexed: 11/10/2022]
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Alemán H, Esparza J, Ramirez FA, Astiazaran H, Payette H. Longitudinal evidence on the association between interleukin-6 and C-reactive protein with the loss of total appendicular skeletal muscle in free-living older men and women. Age Ageing 2011; 40:469-75. [PMID: 21565862 DOI: 10.1093/ageing/afr040] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND there is no longitudinal evidence about the association between the loss of total appendicular skeletal muscle (TASM) and cytokines. OBJECTIVE to investigate whether high levels of the inflammatory markers such as interleukin-6 (IL-6) and C-reactive protein (CRP) are associated with the loss of TASM in free-living non-sarcopenic older people. DESIGN five-year prospective cohort study. SUBJECTS one hundred and fifteen free-living non-sarcopenic older men and women aged 60-84 years at baseline and 5-year follow-up were included. METHODS TASM was measured by dual-energy X-ray absorptiometry, and the relative change in TASM was calculated. The response variable was the loss of TASM defined as the lowest sex-specific 15th percentile of the cohort distribution of percentage of change in TASM. The exposure variables were the baseline serum IL-6 and CRP levels measured by ELISA. RESULTS sixteen subjects were below the sex-specific 15th percentile of the cohort. The mean absolute loss of TASM in these men and women subjects was 1.9 and 1.3 kg, respectively. The risk of loss TASM was 1.29 times higher (95% confidence interval [CI], 1.01-1.64) (P = 0.03) per unit of increase in IL-6 (pg/ml) and 1.28 times higher (95% CI, 1.04-1.58) (P = 0.01) per unit of increase in CRP (mg/l). As a categorical variable, the risk of loss TASM was 4.85 times higher (95% CI, 1.24-18.97) among subjects with serum IL-6 >2.71 pg/ml and 3.97 times higher (CI 95%, 1.09-14.39) among subjects with serum CRP >3.74 mg/l. These findings remained after adjusting for age, sex and 5-year weight change. CONCLUSIONS inflammation is associated with the loss of TASM in free-living non-sarcopenic older men and women.
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Affiliation(s)
- Heliodoro Alemán
- Coordinación de Nutrición, Centro de Investigación en Alimentación y Desarrollo, Hermosillo, Sonora, México.
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van Venrooij LMW, Verberne HJ, de Vos R, Borgmeijer-Hoelen MMMJ, van Leeuwen PAM, de Mol BAJM. Postoperative loss of skeletal muscle mass, complications and quality of life in patients undergoing cardiac surgery. Nutrition 2011; 28:40-5. [PMID: 21621393 DOI: 10.1016/j.nut.2011.02.007] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2010] [Revised: 12/20/2010] [Accepted: 02/12/2011] [Indexed: 02/09/2023]
Abstract
OBJECTIVE The objective of this study was to describe postoperative undernutrition in terms of postoperative losses of appendicular skeletal muscle mass (ASMM) with respect to complications, quality of life, readmission, and 1-y mortality after cardiac surgery. METHODS Patients undergoing cardiac surgery were prospectively followed. ASMM was measured 2 wk before and 2 mo after surgery using dual-energy X-ray absorptiometry. ASMM consists of arm skeletal muscle mass (SMM) and leg SMM. The association between ≥5% of ASMM decrease and postoperative outcome was analyzed using the chi-square test. A similar approach was used to analyze arm SMM and leg SMM decreases separately. RESULTS Twenty-nine patients were included (23 male, 34.5% ≥65 y old). Postoperatively, seven patients (24.1%) lost ≥5% ASMM. When analyzed separately, a ≥5% decrease in leg SMM was associated with a decrease in experienced vitality (odds ratio 13.0, 95% confidence interval 1.32-128.11, P = 0.03). In contrast, a ≥5% loss of arm SMM was associated with fewer in-hospital complications (odds ratio 0.20, 95% confidence interval 0.04-0.98, P = 0.04). These patients were characterized by a higher preoperative fat-free mass index (kilograms per meter squared; P = 0.01). CONCLUSIONS The results suggest that a preoperatively higher fat-free mass index indicates better ability to cope with operative stress, resulting in fewer complications. In addition, postoperative loss of muscle mass was associated with decreased vitality. We advocate further research investigating the effect of preoperative and postoperative nutritional intervention combined with physical exercise programs to increase lean body mass and thereby improve postoperative recovery after cardiac surgery.
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Affiliation(s)
- Lenny M W van Venrooij
- Department of Dietetics, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
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Lustgarten MS, Fielding RA. Assessment of analytical methods used to measure changes in body composition in the elderly and recommendations for their use in phase II clinical trials. J Nutr Health Aging 2011; 15:368-75. [PMID: 21528163 PMCID: PMC3376910 DOI: 10.1007/s12603-011-0049-x] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
It is estimated that in the next 20 years, the amount of people greater than 65 years of age will rise from 40 to 70 million, and will account for 19% of the total population. Age-related decreases in muscle mass and function, known as sarcopenia, have been shown to be related to functional limitation, frailty and an increased risk of morbidity and mortality. Therefore, with an increasing elderly population, interventions that can improve muscle mass content and/or function are essential. However, analytical techniques used for measurement of muscle mass in young subjects may not be valid for use in the elderly. Therefore, the purpose of this review is to examine the applied specificity and accuracy of methods that are commonly used for measurement of muscle mass in aged subjects, and, to propose specific recommendations for the use of body composition measures in phase II clinical trials of function-promoting anabolic therapies.
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Affiliation(s)
- M S Lustgarten
- Nutrition, Exercise Physiology and Sarcopenia Laboratory, Jean Mayer USDA Human Research Center on Aging, Tufts University, Boston, MA 02111-1524, USA
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Reliability and accuracy of segmental bioelectrical impedance analysis for assessing muscle and fat mass in older Europeans: a comparison with dual-energy X-ray absorptiometry. Eur J Appl Physiol 2011; 111:1879-87. [DOI: 10.1007/s00421-010-1795-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2010] [Accepted: 12/20/2010] [Indexed: 10/18/2022]
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van Venrooij LM, Verberne HJ, de Vos R, Borgmeijer-Hoelen MM, van Leeuwen PA, de Mol BA. Preoperative and postoperative agreement in fat free mass (FFM) between bioelectrical impedance spectroscopy (BIS) and dual-energy X-ray absorptiometry (DXA) in patients undergoing cardiac surgery. Clin Nutr 2010; 29:789-94. [DOI: 10.1016/j.clnu.2010.06.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2010] [Revised: 04/29/2010] [Accepted: 06/01/2010] [Indexed: 01/08/2023]
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Heatwole CR, Eichinger KJ, Friedman DI, Hilbert JE, Jackson CE, Logigian EL, Martens WB, McDermott MP, Pandya SK, Quinn C, Smirnow AM, Thornton CA, Moxley RT. Open-label trial of recombinant human insulin-like growth factor 1/recombinant human insulin-like growth factor binding protein 3 in myotonic dystrophy type 1. ACTA ACUST UNITED AC 2010; 68:37-44. [PMID: 20837825 DOI: 10.1001/archneurol.2010.227] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
OBJECTIVE To evaluate the safety and tolerability of recombinant human insulin-like growth factor 1 (rhIGF-1) complexed with IGF binding protein 3 (rhIGF-1/rhIGFBP-3) in patients with myotonic dystrophy type 1 (DM1). DESIGN Open-label dose-escalation clinical trial. SETTING University medical center. PARTICIPANTS Fifteen moderately affected ambulatory participants with genetically proven myotonic dystrophy type 1. INTERVENTION Participants received escalating dosages of subcutaneous rhIGF-1/rhIGFBP-3 for 24 weeks followed by a 16-week washout period. MAIN OUTCOME MEASURES Serial assessments of safety, muscle mass, muscle function, and metabolic state were performed. The primary outcome variable was the ability of participants to complete 24 weeks receiving rhIGF-1/ rhIGFBP-3 treatment. RESULTS All participants tolerated rhIGF-1/rhIGFBP-3. There were no significant changes in muscle strength or functional outcomes measures. Lean body muscle mass measured by dual-energy x-ray absorptiometry increased by 1.95 kg (P < .001) after treatment. Participants also experienced a mean reduction in triglyceride levels of 47 mg/dL (P = .002), a mean increase in HDL levels of 5.0 mg/dL (P = .03), a mean reduction in hemoglobin A(1c) levels of 0.15% (P = .03), and a mean increase in testosterone level (in men) of 203 ng/dL (P = .002) while taking rhIGF-1/rhIGFBP-3. Mild reactions at the injection site occurred (9 participants), as did mild transient hypoglycemia (3), lightheadedness (2), and transient papilledema (1). CONCLUSIONS Treatment with rhIGF-1/rhIGFBP-3 was generally well tolerated in patients with myotonic dystrophy type 1. Treatment with rhIGF-1/rhIGFBP-3 was associated with increased lean body mass and improvement in metabolism but not increased muscle strength or function. Larger randomized controlled trials would be needed to further evaluate the efficacy and safety of this medication in patients with neuromuscular disease. TRIAL REGISTRATION clinicaltrials.gov Identifier: NCT00233519.
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Affiliation(s)
- Chad R Heatwole
- University of Rochester Medical Center, Rochester, NY 14642, USA.
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Aslani A, Gill AJ, Roach PJ, Allen BJ, Smith RC. Preoperative body composition is influenced by the stage of operable pancreatic adenocarcinoma but does not predict survival after Whipple's procedure. HPB (Oxford) 2010; 12:325-33. [PMID: 20590908 PMCID: PMC2951821 DOI: 10.1111/j.1477-2574.2010.00171.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVES Cachexia is common in pancreatic cancer and may have an influence on longterm survival but few studies have investigated this in patients with operable tumours. Therefore, this study was carried out to document body composition status in patients with pancreatic adenocarcinoma (PCa) presenting for a Whipple's procedure (WP) and to relate the findings to histopathology and longterm survival. METHODS Body composition was measured 1 day before a WP for ductal PCa in 36 patients (15 men, 21 women) aged 41-81 years. Results for total body nitrogen (TBN), nitrogen index (NI), total body water (TBW), fat mass (FM) and total body potassium (TBK) were compared with results in 73 age- and sex-matched controls. Patients' survival and details from histopathology synoptic reports were documented. RESULTS Patients undergoing WPs had low TBK values (P < 0.001) and females had lower body fat (P = 0.007) compared with controls. Five of 36 presented with significant protein deficiency, but this was not associated with a prolonged length of stay or reduced survival. The 12 patients who had involved surgical margins had larger tumours and reduced weight (P = 0.015), FM (P = 0.001), TBN (P = 0.045), TBK (P = 0.014) and survival (P = 0.036). However, multivariate Cox's regression analysis only included FM along with vascular invasion and margin status as independent predictors of survival. CONCLUSIONS PCa patients undergoing a WP have reduced body fat and TBK compared with community controls while those with stage III tumours had greater deficits of fat, TBK and protein stores. However, preoperative body composition was a poor predictor of postoperative survival after pathological data were considered.
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Affiliation(s)
- Alireza Aslani
- Department of Nuclear Medicine, Northern Clinical School, University of Sydney at Royal North Shore HospitalSt Leonards, NSW, Australia
| | - Anthony J Gill
- Department of Anatomical Pathology, Northern Clinical School, University of Sydney at Royal North Shore HospitalSt Leonards, NSW, Australia
| | - Paul J Roach
- Department of Nuclear Medicine, Northern Clinical School, University of Sydney at Royal North Shore HospitalSt Leonards, NSW, Australia
| | - Barry J Allen
- Department of Nuclear Medicine, Northern Clinical School, University of Sydney at Royal North Shore HospitalSt Leonards, NSW, Australia
| | - Ross C Smith
- University Department of Surgery, Northern Clinical School, University of Sydney at Royal North Shore HospitalSt Leonards, NSW, Australia
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Stramaglia G, Greco A, Guglielmi G, De Matthaeis A, Vendemiale GL. Echocardiography and dual-energy x-ray absorptiometry in the elderly patients with metabolic syndrome: a comparison of two different tecniques to evaluate visceral fat distribution. J Nutr Health Aging 2010; 14:6-10. [PMID: 20082047 DOI: 10.1007/s12603-010-0002-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVES Metabolic syndrome (MetS) is an important risk factor for vascular diseases. Two simple and low cost measurements, the epicardial fat (EFT) obtained by echocardiography and abdominal fat (AFT) thickness evaluated by Dual-Energy X-Ray Absorptiometry (DEXA), have been validated as a markers of fat storage in young adults and elderly patients affected by MetS. At present no studies are available yet to compare the two techniques and to test their relationship with MetS. Moreover, no data exit concerning the association between hepatic steatosis, a well known indicator of intra hepatic fat storage and perivisceral fat storage. Aims of our study were: 1) to compare EFT and AFT in a group of patients with and without MetS; 2) to study whether and how these two different approaches predict MetS or risk of malnutrition in the obese elderly; 3) to evaluate the relationship between MetS occurrence, EFT, AFT and hepatic steatosis (HS). SETTING AND PARTICIPANTS We studied 55 elderly outpatients ( 29 males and 26 females) referred to MetS service of the IRCCS "Casa Sollievo della Sofferenza" during the year 2007. MEASUREMENTS Subjects underwent a complete clinical and anthropometric evaluation, laboratory tests for glycaemia and lipid profile for MetS definition. Liver ultrasound was executed to verify the occurrence of HS, a well known indicator of intraparenchymal fat storage. HS was defined as hyperechoic liver pattern in patients without liver disease or hepatic enzymes abnormalities. MetS was defined according to National Cholesterol Education Program Adult Treatment Panel III (NCEP ATP III) criteria. Echocardiography for EFT evaluation and DEXA for AFT and fat free mass of the abdomen (FFM) measurement were also performed. Mini Nutritional Assessment (MNA) was used to test the risk of malnutrition in the elderly. RESULTS Patients were divided in two groups according to the absence (24 patients Group 1) or the presence (31 patients Group 2) of the MetS. HS was present in 26 (57.7%) patients. MetS patients had significantly higher AFT and EFT, and lower FFM than patients without MetS. MNA scores were not different. EFT and AFT showed a good correlation ( R 0.8 p < 0.001) but only EFT was associated with the MetS. HS was also correlated to EFT and AFT. MNA showed a risk of malnutrition in 73% of MetS patients and 23% in patients without MetS but both EFT and AFT were not correlated with MNA scores. CONCLUSIONS In the elderly patient with MetS, AFT and EFT are greater than in non MetS patients. Both AFT and EFT are strongly correlated to HS but only EFT was associated with MetS. In obese patients, the risk of malnutrition, as evaluated by MNA, is not associated with an increased fat tissue measured by echocardiography or DEXA.
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Affiliation(s)
- G Stramaglia
- Division of Geriatrics, Department of Medical and Occupational Sciences University of Foggia (Foggia), Italy
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Aleman Mateo H, Lee SY, Javed F, Thornton J, Heymsfield SB, Pierson RN, Pi Sunyer FX, Wang ZM, Wang J, Gallagher D. Elderly Mexicans have less muscle and greater total and truncal fat compared to African-Americans and Caucasians with the same BMI. J Nutr Health Aging 2009; 13:919-23. [PMID: 19924354 PMCID: PMC2819676 DOI: 10.1007/s12603-009-0252-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
BACKGROUND How body composition, specifically skeletal muscle mass, compares in Mexican elderly to other ethnic groups has not previously been reported. We tested the hypothesis that older adults from Northwest Mexico (Mex) would have similar total appendicular skeletal muscle (TASM) compared with New York dwelling Caucasians (Cauc) and African-Americans (AA). METHODS Two hundred and eighty nine Mex (135 males and 154 females), 166 AA (36 males and 130 females) and 229 Cauc (64 males and 165 females), aged 60-98 years were assessed. Total and regional fat and lean tissues were measured by whole-body dual energy X-ray absorptiometry where TASM is the sum of arm and leg bone-free and fat-free lean tissue. Differences in TASM were tested by ANCOVA, with age, height, and body mass index (BMI) as covariates. RESULTS TASM adjusted for ethnicity, age, height and BMI, were 22.6 +/- 0.2 kg and 17.8 +/- 0.1 kg for males and females, respectively (p < 0.001). Among males with similar age, height, and BMI, Mex had less TASM compared with AA and Cauc (p < 0.001). Total body fat and truncal fat were higher (p < 0.001) and FFM lower (p < 0.001) in Mex compared to both AA and Cauc males after adjusting for age and BMI. Among females, Mex had higher total and truncal fat (p < 0.001) after adjusting for age and BMI, and significantly lower TASM (p < 0.001) after adjusting for age, height, and BMI compared to AA and Cauc females. CONCLUSIONS Elderly Mex have a different body composition compared with AA and Cauc of a similar BMI and age. Mex have significantly less TASM with greater total and truncal fat. In the long-term, Mex elderly may be at greater risk for sarcopenic obesity compared to other ethnic groups.
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Affiliation(s)
- H Aleman Mateo
- Departamento de Nutrición y Metabolismo, Coordinación de Nutrición, Centro de Investigación en Alimentación y Desarrollo, Sonora, México
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Aleman-Mateo H, Lee SY, Javed F, Thornton J, Heymsfield SB, Pierson RN, Pi-Sunyer FX, Wang ZM, Wang J, Gallagher D. Elderly Mexicans have less muscle and greater total and truncal fat compared to African-Americans and Caucasians with the same BMI. J Nutr Health Aging 2009. [DOI: 10.1007/s12603-009-0114-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Aasen G, Fagertun H, Halse J. Body composition analysis by dual X‐ray absorptiometry:in vivoandin vitrocomparison of three different fan‐beam instruments. Scand J Clin Lab Invest 2009; 66:659-66. [PMID: 17101558 DOI: 10.1080/00365510600898214] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
BACKGROUND Dual X-ray absorptiometry (DXA) is the preferred method for measuring body composition in clinical practice, but interchange between devices may pose problems with the interpretation of results. OBJECTIVE To establish conversion equations for body composition variables between three fan-beam DXA systems. METHODS Body composition was assessed in 21 subjects using Lunar Expert (Expert), Lunar Prodigy (Prodigy) and Hologic Delphi W (Delphi). Weekly measurements of Hologic whole body phantom 164 were performed. RESULTS There were no significant differences between DXA-measured means of body weight, fat mass and lean body mass. Bland-Altman analysis revealed that Lunar Expert increasingly overestimated fat mass with increasing total mass (p<0.001) relative to Delphi and Prodigy, while Delphi produced a constant underestimation of fat mass. Correlations between scale weights and DXA-measured body weights, and between DXA-measured body weights and the sum of fat masses, lean body masses and bone mineral contents (BMC) between the three instruments, were excellent (Rsqr 0.998-0.910; p<0.001). Conversion factors to Prodigy for Expert and Delphi were respectively 1.003 and 1.011 for total body mass, 0.954 and 1.079 for fat mass, 1.018 and 0.967 for lean body mass and 1.049 and 1.136 for BMC (Rsqr 0.999-0.991; p<0.001). Standard error of estimate (SEE) for the slopes ranged from 0.20% to 2.10%. Phantom studies revealed stable instrument function with CV% commonly<2%, except for lean mass for Delphi (5.5%). CONCLUSIONS Despite the significant differences in measurement of body composition between DXA fan-beam instruments, clinically relevant conversion factors can be established.
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Affiliation(s)
- G Aasen
- Spesialistsenteret Pilestredet Park, Oslo, Norway.
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Liu XG, Tan LJ, Lei SF, Liu YJ, Shen H, Wang L, Yan H, Guo YF, Xiong DH, Chen XD, Pan F, Yang TL, Zhang YP, Guo Y, Tang NL, Zhu XZ, Deng HY, Levy S, Recker RR, Papasian CJ, Deng HW. Genome-wide association and replication studies identified TRHR as an important gene for lean body mass. Am J Hum Genet 2009; 84:418-23. [PMID: 19268274 PMCID: PMC2668008 DOI: 10.1016/j.ajhg.2009.02.004] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2008] [Revised: 02/06/2009] [Accepted: 02/13/2009] [Indexed: 01/09/2023] Open
Abstract
Low lean body mass (LBM) is related to a series of health problems, such as osteoporotic fracture and sarcopenia. Here we report a genome-wide association (GWA) study on LBM variation, by using Affymetrix 500K single-nucleotide polymorphism (SNP) arrays. In the GWA scan, we tested 379,319 eligible SNPs in 1,000 unrelated US whites and found that two SNPs, rs16892496 (p = 7.55 x 10(-8)) and rs7832552 (p = 7.58 x 10(-8)), within the thyrotropin-releasing hormone receptor (TRHR) gene were significantly associated with LBM. Subjects carrying unfavorable genotypes at rs16892496 and rs7832552 had, on average, 2.70 and 2.55 kg lower LBM, respectively, compared to those with alternative genotypes. We replicated the significant associations in three independent samples: (1) 1488 unrelated US whites, (2) 2955 Chinese unrelated subjects, and (3) 593 nuclear families comprising 1972 US whites. Meta-analyses of the GWA scan and the replication studies yielded p values of 5.53 x 10(-9) for rs16892496 and 3.88 x 10(-10) for rs7832552. In addition, we found significant interactions between rs16892496 and polymorphisms of several other genes involved in the hypothalamic-pituitary-thyroid and the growth hormone-insulin-like growth factor-I axes. Results of this study, together with the functional relevance of TRHR in muscle metabolism, support the TRHR gene as an important gene for LBM variation.
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Affiliation(s)
- Xiao-Gang Liu
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Institute of Molecular Genetics, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an Shaanxi 710049, P R China
- School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA
| | - Li-Jun Tan
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, P R China
| | - Shu-Feng Lei
- School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, P R China
| | - Yong-Jun Liu
- School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA
| | - Hui Shen
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Institute of Molecular Genetics, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an Shaanxi 710049, P R China
| | - Liang Wang
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Institute of Molecular Genetics, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an Shaanxi 710049, P R China
- School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA
| | - Han Yan
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Institute of Molecular Genetics, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an Shaanxi 710049, P R China
- School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA
| | - Yan-Fang Guo
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Institute of Molecular Genetics, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an Shaanxi 710049, P R China
| | - Dong-Hai Xiong
- School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA
| | - Xiang-Ding Chen
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, P R China
| | - Feng Pan
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Institute of Molecular Genetics, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an Shaanxi 710049, P R China
| | - Tie-Lin Yang
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Institute of Molecular Genetics, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an Shaanxi 710049, P R China
| | - Yin-Ping Zhang
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Institute of Molecular Genetics, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an Shaanxi 710049, P R China
- School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA
| | - Yan Guo
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Institute of Molecular Genetics, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an Shaanxi 710049, P R China
| | - Nelson L. Tang
- Department of Chemical Pathology and Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, P R China
| | - Xue-Zhen Zhu
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Institute of Molecular Genetics, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an Shaanxi 710049, P R China
| | - Hong-Yi Deng
- School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA
| | - Shawn Levy
- Vanderbilt Microarray Shared Resource, Vanderbilt University, Nashville, TN 37232, USA
| | - Robert R. Recker
- Osteoporosis Research Center, Creighton University, Omaha, NE 68131, USA
| | | | - Hong-Wen Deng
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Institute of Molecular Genetics, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an Shaanxi 710049, P R China
- School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, P R China
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Kemper C, Oliveira RJD, Bottaro M, Moreno R, Bezerra LMA, Guido M, França NMD. Efeitos da natação e do treinamento resistido na densidade mineral óssea de mulheres idosas. REV BRAS MED ESPORTE 2009. [DOI: 10.1590/s1517-86922009000100002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023] Open
Abstract
Exercícios com impacto como caminhada, saltos, corridas e exercícios resistidos são muito utilizados para prevenção da perda óssea em idosas. No entanto, poucos são os estudos que relatam os efeitos da natação na manutenção da massa óssea em mulheres idosas. Portanto, o objetivo deste estudo foi comparar os efeitos da natação com o treinamento resistido na densidade mineral óssea (DMO) de mulheres idosas. Vinte e três mulheres com idade média de 63,9 ± 6,49 anos foram divididas em dois grupos: 1) grupo natação (NAT, n = 13, que) treinou em intensidade entre 60 e 90% da freqüência cardíaca de reserva; 2) grupo treinamento resistido (TR, n = 10), que treinou os principais grupamentos musculares com três séries a 80% de 1RM. Os dois grupos praticaram três vezes por semana com uma hora de duração para cada sessão, durante seis meses. A DMO do colo do fêmur e da coluna lombar (L2-L3-L4) foi mensurada através de DXA antes (T0) e após seis meses de treino (T6). Os resultados mostraram que as médias para a DMO lombar em T0 (0,9250 ± 0,1506g/cm²) e T6 (0,9303 ± 0,1269g/cm²) para o NAT e em T0 (0,9739 ± 0,1249g/cm²) e T6 (0,9737 ± 0,1317g/cm²) para o TR não foram diferentes quando comparadas intra ou intergrupos. De modo similar, não houve diferenças entre a DMO do colo do fêmur em T0 (0,7784 ± 0,1523g/cm²) e T6 (0,7905 ± 0,1610g/cm²) para o NAT e T0 (0,7546 ± 0,1360g/cm²) e T6 (0,7522 ± 0,1421g/cm²) para o TR. Os resultados deste estudo não demonstraram diferenças na DMO entre NAT e TR após seis meses de treino; e que tanto TR quanto NAT não produzem aumentos significativos na DMO de mulheres idosas nesse período.
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Wielopolski L, Ramirez LM, Spungen AM, Swaby S, Asselin P, Bauman WA. Measuring partial body potassium in the legs of patients with spinal cord injury: a new approach. J Appl Physiol (1985) 2009; 106:268-73. [DOI: 10.1152/japplphysiol.90435.2008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Patients with acute spinal cord injury (SCI) with paralysis experience rapid and marked muscle atrophy below the level of the lesion. Muscle is lost above the lesion due to enforced bed rest associated with immobilization. Presently, there is no viable method to quantify muscle loss between the time of injury to the initiation of rehabilitation and remobilization. Furthermore, to assess the efficacy of any physical or pharmacological intervention necessitates the ability to accurately determine the impact of these treatments on muscle mass and function. Our results are presented from measurements of regional potassium (K) in the legs of persons with chronic SCI. The intracellular body K, comprising ∼97% of the total body K, is indicative of the metabolically active cell mass, of which over 50% is located in the skeletal muscle (SM). To assess regional variations in SM mass in the legs, a partial body K (PBK) system designed for this purpose was placed on a potentially mobile cart. The SM mass measured by PBK in an able-bodied control cohort ( n = 17) and in patients with chronic SCI ( n = 21) was 17.6 ± 0.86 and 11.0 ± 0.65 kg, respectively, a difference of ∼37.5%. However, the difference in the lean tissue mass of the legs obtained by dual-energy absorptiometry (DXA) in the same cohorts was 20.5 ± 0.86 and 15.5 ± 0.88 kg, respectively, or a difference of ∼24.4%. PBK offers a novel approach to obtain regional K measurements in the legs, thus allowing the potential for early and serial assessment of muscle loss in SCI subjects during the acute and subacute periods following paralysis. The basic characteristics and performance of our PBK system and our calibration procedure are described in this preliminary report.
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The MTHFR gene polymorphism is associated with lean body mass but not fat body mass. Hum Genet 2008; 123:189-96. [DOI: 10.1007/s00439-007-0463-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2007] [Accepted: 12/23/2007] [Indexed: 01/25/2023]
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