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Malta FAPS, Gonçalves DC. A triple-masked, two-center, randomized parallel clinical trial to assess the superiority of eight weeks of grape seed flour supplementation against placebo for weight loss attenuation during perioperative period in patients with cachexia associated with colorectal cancer: a study protocol. Front Endocrinol (Lausanne) 2024; 14:1146479. [PMID: 38313843 PMCID: PMC10834683 DOI: 10.3389/fendo.2023.1146479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 12/07/2023] [Indexed: 02/06/2024] Open
Abstract
Background Progressive, involuntary weight and lean mass loss in cancer are linked to cachexia, a prevalent syndrome in gastrointestinal malignancies that impacts quality of life, survival and postoperative complications. Its pathophysiology is complex and believed to involve proinflammatory cytokine-mediated systemic inflammation resulting from tumor-host interaction, oxidative stress, abnormal metabolism and neuroendocrine changes. Therapeutic options for cachexia remain extremely limited, highlighting the need for clinical research targeting new interventions. Thus, this study primarily assesses the effects of grape-seed flour (GSF), rich in polyphenols and fibers, for attenuating perioperative weight loss in colorectal cancer. Methods This is a dual-center, triple-masked, placebo-controlled, parallel-group, phase II, randomized clinical trial designed to investigate GSF supplementation in subjects with pre- or cachexia associated with colorectal cancer during the perioperative period. Eighty-two participants will receive 8g of GSF or cornstarch (control) for 8 weeks. Assessments are scheduled around surgery: pre-intervention (4 weeks prior), day before, first week after, and post-intervention (4 weeks later). The primary endpoint is the difference in body weight mean change from baseline to week 8. The secondary endpoints describe the harms from 8-week supplementation and assess its superiority to improve body composition, post-surgical complications, quality of life, anorexia, fatigue, gastrointestinal symptoms, and handgrip strength. The study will also explore its effects on gut bacteria activity and composition, systemic inflammation, and muscle metabolism. Discussion The current trial addresses a gap within the field of cancer cachexia, specifically focusing on the potential role of a nutritional intervention during the acute treatment phase. GSF is expected to modulate inflammation and oxidative stress, both involved in muscle and intestinal dysfunction. The research findings hold substantial implications for enhancing the understanding about cachexia pathophysiology and may offer a new clinical approach to managing cachexia at a critical point in treatment, directly impacting clinical outcomes. Trial registration The Brazilian Registry of Clinical Trials (ReBEC), RBR-5p6nv8b; UTN: U1111-1285-9594. Prospectively registered on February 07, 2023.
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Estanislau TB, Kruger K, Rosa-Neto JC, Padilha CS, Gonçalves DC, Minuzzi LG, Lira FS. Feeding pattern, circadian rhythm, and immune function: what do we know about? Curr Pharm Des 2022; 28:2478-2487. [PMID: 35909275 DOI: 10.2174/1381612828666220729091451] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 05/09/2022] [Indexed: 11/22/2022]
Abstract
Feeding pattern is related to health status or chronic diseases, and this depends on the individual's eating habits. Feeding organized with the right time to start and end during the day, promotes an internal biological rhythm, favoring molecular synchronization of the clock genes, which impose an effect on metabolism and immune cells, creating a physiological response related to a healthy profile. On the other hand, a feeding pattern disorganized, without the right time to start and end eating during the day, might lead to non-synchronization of the clock genes, a disruption condition, which is related to chronic diseases, such as obesity and diabetes type 2. A strategy that should be adopted to favor molecular synchronization is time-restricted eating (TRE), which can organize the initial and end of the eating patterns during the day. Our review points out some cues that suggest TRE as an efficient strategy for healthy profile and can be a good intervention for the treatment of chronic diseases.
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Affiliation(s)
- Thiago Barros Estanislau
- Department Of Biosciences, Universidade Federal de São Paulo (UNIFESP), Campus Baixada Santista, Santos, São Paulo, Brazil
| | - Karsten Kruger
- Institute of Sports Science, Department of Exercise Physiology and Sports Therapy, University of Giessen, Giessen, Germany
| | - José Cesar Rosa-Neto
- Immunometabolism Research Group, Department of Cell Biology and Development, Institute of B iomedical Science, University of São Paulo, São Paulo, Brazil
| | - Camila S Padilha
- Exercise and Immunometabolism Research Group, Postgraduation Program in Movement Sciences, Department of Physical Education, Universidade Estadual Paulista (UNESP), Presidente Prudente, Brazil
| | - Daniela Caetano Gonçalves
- Department Of Biosciences, Universidade Federal de São Paulo (UNIFESP), Campus Baixada Santista, Santos, São Paulo, Brazil
| | - Luciele Guerra Minuzzi
- Exercise and Immunometabolism Research Group, Postgraduation Program in Movement Sciences, Department of Physical Education, Universidade Estadual Paulista (UNESP), Presidente Prudente, Brazil
| | - Fábio Santos Lira
- Exercise and Immunometabolism Research Group, Postgraduation Program in Movement Sciences, Department of Physical Education, Universidade Estadual Paulista (UNESP), Presidente Prudente, Brazil
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Dos Santos Gomes W, de Freitas MC, Dutra YM, Rossi F, Estanislau TB, Gonçalves DC, Campos EZ. Effects of Capsiate Supplementation on Maximal Voluntary Contraction in Healthy Men. Int J Sports Med 2021; 43:466-472. [PMID: 34666412 DOI: 10.1055/a-1502-6563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
This study aimed to investigate the effects of acute capsaicin analog (Capsiate - CAP) supplementation on maximal voluntary isometric contraction (MVIC) performance in healthy young men. Thirteen subjects (25.2±3.2 yrs) participated in the present study. In two different days separated by one week, the subjects ingested capsiate (12 mg) or placebo (starch: 12 mg) 45 minutes before a MVIC test. The MVIC test consisted of five 10-second knee extension maximal isometric contractions with 45 seconds of recovery between efforts. The peak force, mean force, minimum force, fatigue index, and area under the curve of each contraction were calculated. Main condition effect was found, with higher values of peak force (+4.83%, F=6.867, p=0.02), fatigue index (+8.96%, F=5.228, p=0.041), and area under the curve (+4.19%, F=4.774, p=0.04) for CAP compared to placebo, however, no interaction effect was found for any variable (F=0.090 to 1.356, p≥0.276). In summary, healthy young men produced higher maximal isometric force and delayed fatigue in the CAP condition compared to placebo condition (condition effect) but without significant difference between each effort.
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Affiliation(s)
| | - Marcelo Conrado de Freitas
- Department of Physical Education, Universidade Estadual Paulista Julio de Mesquita Filho - Campus de Presidente Prudente, Presidente Prudente, Brazil
| | | | - Fabrício Rossi
- Department of Physical Education, Universidade Federal do Piaui, Teresina, Brazil
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Silverio R, Gonçalves DC, Andrade MF, Seelaender M. Coronavirus Disease 2019 (COVID-19) and Nutritional Status: The Missing Link? Adv Nutr 2021; 12:682-692. [PMID: 32975565 PMCID: PMC7543263 DOI: 10.1093/advances/nmaa125] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 08/19/2020] [Accepted: 09/09/2020] [Indexed: 12/15/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19) is an emerging disease that has reached pandemic status by rapidly spreading worldwide. Elderly individuals and patients with comorbidities such as obesity, diabetes, and hypertension show a higher risk of hospitalization, severe disease, and mortality by acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. These patients frequently show exacerbated secretion of proinflammatory cytokines associated with an overreaction of the immune system, the so-called cytokine storm. Host nutritional status plays a pivotal role in the outcome of a variety of different infectious diseases. It is known that the immune system is highly affected by malnutrition, leading to decreased immune responses with consequent augmented risk of infection and disease severity. Body composition, especially low lean mass and high adiposity, has consistently been linked to worsened prognosis in many different diseases. In this review, evidence concerning the impact of nutritional status on viral infection outcomes is discussed.
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Affiliation(s)
- Renata Silverio
- Cancer Metabolism Research Group, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
- Multicenter Graduate Program in Physiological Sciences, Center of Biological Sciences, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Daniela Caetano Gonçalves
- Cancer Metabolism Research Group, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
- Biosciences Department, Universidade Federal de São Paulo (UNIFESP), Campus Baixada Santista, Santos, Brazil
| | - Márcia Fábia Andrade
- Cancer Metabolism Research Group, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Marilia Seelaender
- Cancer Metabolism Research Group, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
- Department of Clinical Surgery, LIM 26-HC, Faculdade de Medicina, University of São Paulo, São Paulo, Brazil
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de Castro GS, Correia-Lima J, Simoes E, Orsso CE, Xiao J, Gama LR, Gomes SP, Gonçalves DC, Costa RGF, Radloff K, Lenz U, Taranko AE, Bin FC, Formiga FB, de Godoy LGL, de Souza RP, Nucci LHA, Feitoza M, de Castro CC, Tokeshi F, Alcantara PSM, Otoch JP, Ramos AF, Laviano A, Coletti D, Mazurak VC, Prado CM, Seelaender M. Myokines in treatment-naïve patients with cancer-associated cachexia. Clin Nutr 2020; 40:2443-2455. [PMID: 33190987 DOI: 10.1016/j.clnu.2020.10.050] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 10/10/2020] [Accepted: 10/26/2020] [Indexed: 12/13/2022]
Abstract
Cancer-associated cachexia is a complex metabolic syndrome characterized by weight loss and systemic inflammation. Muscle loss and fatty infiltration into muscle are associated with poor prognosis in cancer patients. Skeletal muscle secretes myokines, factors with autocrine, paracrine and/or endocrine action, which may be modified by or play a role in cachexia. This study examined myokine content in the plasma, skeletal muscle and tumor homogenates from treatment-naïve patients with gastric or colorectal stages I-IV cancer with cachexia (CC, N = 62), or not (weight stable cancer, WSC, N = 32). Myostatin, interleukin (IL) 15, follistatin-like protein 1 (FSTL-1), fatty acid binding protein 3 (FABP3), irisin and brain-derived neurotrophic factor (BDNF) protein content in samples was measured with Multiplex technology; body composition and muscle lipid infiltration were evaluated in computed tomography, and quantification of triacylglycerol (TAG) in the skeletal muscle. Cachectic patients presented lower muscle FSTL-1 expression (p = 0.047), higher FABP3 plasma content (p = 0.0301) and higher tumor tissue expression of FABP3 (p = 0.0182), IL-15 (p = 0.007) and irisin (p = 0.0110), compared to WSC. Neither muscle TAG content, nor muscle attenuation were different between weight stable and cachectic patients. Lumbar adipose tissue (AT) index, visceral AT index and subcutaneous AT index were lower in CC (p = 0.0149, p = 0.0455 and p = 0.0087, respectively), who also presented lower muscularity in the cohort (69.2% of patients; p = 0.0301), compared to WSC. The results indicate the myokine profile in skeletal muscle, plasma and tumor is impacted by cachexia. These findings show that myokines eventually affecting muscle wasting may not solely derive from the muscle itself (as the tumor also may contribute to the systemic scenario), and put forward new perspectives on cachexia treatment targeting myokines and associated receptors and pathways.
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Affiliation(s)
- Gabriela S de Castro
- Cancer Metabolism Research Group, Universidade de Sao Paulo Instituto de Ciencias Biomedicas, Departamento de Biologia Celular e do Desenvolvimento and Faculdade de Medicina da Universidade de Sao Paulo, Departamento de Cirurgia, LIM 26-HC, São Paulo, Brazil.
| | - Joanna Correia-Lima
- Cancer Metabolism Research Group, Universidade de Sao Paulo Instituto de Ciencias Biomedicas, Departamento de Biologia Celular e do Desenvolvimento and Faculdade de Medicina da Universidade de Sao Paulo, Departamento de Cirurgia, LIM 26-HC, São Paulo, Brazil
| | - Estefania Simoes
- Cancer Metabolism Research Group, Universidade de Sao Paulo Instituto de Ciencias Biomedicas, Departamento de Biologia Celular e do Desenvolvimento and Faculdade de Medicina da Universidade de Sao Paulo, Departamento de Cirurgia, LIM 26-HC, São Paulo, Brazil
| | - Camila E Orsso
- University of Alberta, Department of Agricultural, Food and Nutritional Science, Canada
| | - Jingjie Xiao
- University of Alberta, Department of Agricultural, Food and Nutritional Science, Canada; Covenant Health Palliative Institute, Edmonton, Alberta, Canada
| | - Leonardo R Gama
- Departamento de Radiologia e Oncologia & Instituto do Câncer do Estado de São Paulo, Universidade de Sao Paulo, São Paulo, Brazil
| | - Silvio P Gomes
- Cancer Metabolism Research Group, Universidade de Sao Paulo Instituto de Ciencias Biomedicas, Departamento de Biologia Celular e do Desenvolvimento and Faculdade de Medicina da Universidade de Sao Paulo, Departamento de Cirurgia, LIM 26-HC, São Paulo, Brazil; Universidade de Sao Paulo Faculdade de Medicina Veterinaria, Departamento de Cirurgia, Brazil
| | - Daniela Caetano Gonçalves
- Cancer Metabolism Research Group, Universidade de Sao Paulo Instituto de Ciencias Biomedicas, Departamento de Biologia Celular e do Desenvolvimento and Faculdade de Medicina da Universidade de Sao Paulo, Departamento de Cirurgia, LIM 26-HC, São Paulo, Brazil; Universidade Federal de Sao Paulo, Instituto de Biociencias, Santos, Brazil
| | - Raquel G F Costa
- Cancer Metabolism Research Group, Universidade de Sao Paulo Instituto de Ciencias Biomedicas, Departamento de Biologia Celular e do Desenvolvimento and Faculdade de Medicina da Universidade de Sao Paulo, Departamento de Cirurgia, LIM 26-HC, São Paulo, Brazil
| | - Katrin Radloff
- Cancer Metabolism Research Group, Universidade de Sao Paulo Instituto de Ciencias Biomedicas, Departamento de Biologia Celular e do Desenvolvimento and Faculdade de Medicina da Universidade de Sao Paulo, Departamento de Cirurgia, LIM 26-HC, São Paulo, Brazil
| | - Ulrike Lenz
- Cancer Metabolism Research Group, Universidade de Sao Paulo Instituto de Ciencias Biomedicas, Departamento de Biologia Celular e do Desenvolvimento and Faculdade de Medicina da Universidade de Sao Paulo, Departamento de Cirurgia, LIM 26-HC, São Paulo, Brazil
| | - Anna E Taranko
- Cancer Metabolism Research Group, Universidade de Sao Paulo Instituto de Ciencias Biomedicas, Departamento de Biologia Celular e do Desenvolvimento and Faculdade de Medicina da Universidade de Sao Paulo, Departamento de Cirurgia, LIM 26-HC, São Paulo, Brazil
| | - Fang Chia Bin
- Santa Casa de Misericoria de Sao Paulo, São Paulo, Brazil
| | | | | | | | - Luis H A Nucci
- Instituto do Cancer Arnaldo Vieira de Carvalho, São Paulo, Brazil
| | - Mario Feitoza
- Instituto do Cancer Arnaldo Vieira de Carvalho, São Paulo, Brazil
| | - Claudio C de Castro
- Universidade de Sao Paulo Faculdade de Medicina, Departamento de Radiologia, São Paulo, Brazil; Universidade de Sao Paulo Hospital Universitario, São Paulo, Brazil
| | - Flavio Tokeshi
- Universidade de Sao Paulo Hospital Universitario, São Paulo, Brazil
| | | | - Jose P Otoch
- Universidade de Sao Paulo Hospital Universitario, São Paulo, Brazil
| | - Alexandre F Ramos
- Departamento de Radiologia e Oncologia & Instituto do Câncer do Estado de São Paulo, Universidade de Sao Paulo, São Paulo, Brazil; Escola de Artes, Ciencias e Humanidades, Universidade de Sao Paulo, São Paulo, Brazil
| | - Alessandro Laviano
- Department of Translational and Precision Medicine, Sapienza University, Rome, Italy
| | - Dario Coletti
- Sorbonne Université, Department of Biological Adaptation and Aging, B2A, Paris, France; Department of AHFMO - Unit of Histology and Medical Embryology, Sapienza University of Rome, Rome, Italy
| | - Vera C Mazurak
- University of Alberta, Department of Agricultural, Food and Nutritional Science, Canada
| | - Carla M Prado
- University of Alberta, Department of Agricultural, Food and Nutritional Science, Canada
| | - Marilia Seelaender
- Cancer Metabolism Research Group, Universidade de Sao Paulo Instituto de Ciencias Biomedicas, Departamento de Biologia Celular e do Desenvolvimento and Faculdade de Medicina da Universidade de Sao Paulo, Departamento de Cirurgia, LIM 26-HC, São Paulo, Brazil
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Estanislau TB, Leite GSF, Resende AS, Marques LR, Lancha Junior AH, Gonçalves DC. The Effects Of Citrulline Malate Supplementation In Strength And Muscle Mass. Med Sci Sports Exerc 2020. [DOI: 10.1249/01.mss.0000686672.05355.d6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Gonçalves DC, Lira FS, Yamashita AS, Carnevali Junior LC, Eder R, Laviano A, Seelaender MCL. Liver lipid metabolism disruption in cancer cachexia is aggravated by cla supplementation -induced inflammation. Clin Nutr 2019; 38:2219-2230. [DOI: 10.1016/j.clnu.2018.09.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 09/15/2018] [Accepted: 09/18/2018] [Indexed: 01/14/2023]
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Capozzolo AA, Casetto SJ, Nicolau SM, Junqueira V, Gonçalves DC, Maximino VS. Formação interprofissional e produção do cuidado: análise de uma experiência. Interface (Botucatu) 2018. [DOI: 10.1590/1807-57622017.0679] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Resumo Este artigo tem como objetivo apresentar e analisar uma experiência de formação interprofissional que ocorre desde 2008, envolvendo estudantes do terceiro ano de graduação dos cursos de Educação Física, Nutrição, Psicologia, Fisioterapia e Terapia Ocupacional de uma universidade pública. Ao longo do semestre, equipes mistas de estudantes, supervisionadas por duplas de docentes, também de diferentes áreas profissionais, realizam atendimentos semanais e elaboram projetos de cuidado para pessoas/grupos selecionados por equipes dos serviços. A metodologia utilizada envolveu a produção de narrativas de situações marcantes vivenciadas por docentes nas atividades de ensino, das quais foram discernidas questões que têm se colocado nesta proposta de formação. A discussão de tais questões indicou as potencialidades de intervenções em comum e os desafios da supervisão docente para sustentar a experiência dos estudantes e possibilitar a constituição de uma clínica que valorize a perspectiva dos usuários.
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Lira FS, Yamashita A, Carnevali LC, Gonçalves DC, Lima WP, Rosa JC, Caperuto EC, Rosa LFC, Seelaender M. Exercise training reduces PGE2 levels and induces recovery from steatosis in tumor-bearing rats. Horm Metab Res 2010; 42:944-9. [PMID: 21064006 DOI: 10.1055/s-0030-1267949] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The effects of endurance training on PGE (2) levels and upon the maximal activity of hepatic carnitine palmitoyltransferase (CPT) system were studied in rats bearing the Walker 256 carciosarcoma. Animals were randomly assigned to a sedentary control (SC), sedentary tumor-bearing (ST), exercised control (EC), and as an exercised tumor-bearing (ET) group. Trained rats ran on a treadmill (60% VO (2) max) for 60 min/day, 5 days/week, for 8 weeks. We examined the mRNA expression (RT-PCR) and maximal activity (radioassay) of the carnitine palmitoyltransferase system enzymes (CPT I and CPT II), as well as the gene expression of fatty-acid-binding protein (L-FABP) in the liver. PGE (2) content was measured in the serum, in tumor cells, and in the liver (ELISA). CPT I and CPT II maximal activity were decreased (p<0.01) in ST when compared with SC. In contrast, serum PGE (2) was increased (p<0.05) in cachectic animals as compared with SC. In the liver, PGE (2) content was also increased (p<0.05) when compared with SC. Endurance training restored maximal CPT I and CPT II activity in the tumor-bearing animals (p<0.0001). Exercise training induced PGE (2) levels to return to control values in the liver of tumor-bearing training rats (p<0.05) and decreased the eicosanoid content in the tumor (p<0.01). In conclusion, endurance training was capable of reestablishing liver carnitine palmitoyltransferase (CPT) system activity associated with decreased PGE (2) levels in cachectic tumor-bearing animals, preventing steatosis.
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Affiliation(s)
- F S Lira
- Cancer Metabolism Research Group, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
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Carnevali LC, Eder R, Lima WP, Papeschi JC, Gonçalves DC, Seelaender M. Treadmill Training Modulates Hepatic Ikb Gene Expression In Normal And Tumour-bearing Rats. Med Sci Sports Exerc 2010. [DOI: 10.1249/01.mss.0000385028.32619.93] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Yamashita AS, Lira FS, Lima WP, Carnevali Jr. LC, Gonçalves DC, Tavares FL, Seelaender MCL. Influência do treinamento físico aeróbio no transporte mitocondrial de ácidos graxos de cadeia longa no músculo esquelético: papel do complexo carnitina palmitoil transferase. REV BRAS MED ESPORTE 2008. [DOI: 10.1590/s1517-86922008000200013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
O ácido graxo (AG) é uma importante fonte de energia para o músculo esquelético. Durante o exercício sua mobilização é aumentada para suprir as necessidades da musculatura ativa. Acredita-se que diversos pontos de regulação atuem no controle da oxidação dos AG, sendo o principal a atividade do complexo carnitina palmitoil transferase (CPT), entre os quais três componentes estão envolvidos: a CPT I, a CPT II e carnitina acilcarnitina translocase. A função da CPT I durante o exercício físico é controlar a entrada de AG para o interior da mitocôndria, para posterior oxidação do AG e produção de energia. Em resposta ao treinamento físico há um aumento na atividade e expressão da CPT I no músculo esquelético. Devido sua grande importância no metabolismo de lipídios, os mecanismos que controlam sua atividade e sua expressão gênica são revisados no presente estudo. Reguladores da expressão gênica de proteínas envolvidas no metabolismo de lipídios no músculo esquelético, os receptores ativados por proliferadores de peroxissomas (PPAR) alfa e beta, são discutidos com um enfoque na resposta ao treinamento físico.
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Affiliation(s)
| | | | - Waldecir Paula Lima
- Universidade de São Paulo, Brasil; Centro Federal de Educação Tecnológica de São Paulo, Brasil
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Koyama C, dos Santos Lira F, Yamashita AS, Junior MB, Gonçalves DC, Alves MJ, Junior EM, Rosa Neto JC, Leite Seelaender MC. Aerobic Training Attenuates the Expression of TNF-α in the Skeletal Muscle of Rats Bearing the Walker 256 Tumor. Med Sci Sports Exerc 2007. [DOI: 10.1249/01.mss.0000273834.35999.d9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Lauande-Pimentel R, Carvalho RA, Oliveira HC, Gonçalves DC, Silva LM, Costa VP. Discrimination between normal and glaucomatous eyes with visual field and scanning laser polarimetry measurements. Br J Ophthalmol 2001; 85:586-91. [PMID: 11316722 PMCID: PMC1723956 DOI: 10.1136/bjo.85.5.586] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
AIM To evaluate the ability of structural parameters (as determined by retinal nerve fibre layer (RNFL) measurements obtained with the scanning laser polarimeter (SLP-NFA/GDx)) and functional parameters (as determined by automated perimetry) to discriminate between normal and glaucomatous eyes. METHODS In a case-control study, a total of 91 normal subjects and 94 patients with glaucoma underwent automated perimetry and RNFL measurements obtained with the SLP. Three independent scans of each eye were obtained and a mean image was created and used for further analysis. Only one eye per individual was randomly included in the study. The sensitivity (Se) and specificity (Sp) of 12 RNFL parameters were calculated according to the SLP internal normative database. The Se and Sp of the visual field (VF) global indices and the glaucoma hemifield test (GHT) were also calculated according to the instrument's normative database. Receiver operator characteristic (ROC) curves were built for each SLP parameter and VF index. Fisher's linear discriminant formulas (LDFs) were developed for VF indices (VF LDF), SLP measurements (SLP LDF), and both examinations (combined LDF). RESULTS According to the SLP internal database, the parameters with better Se and Sp were: superior/nasal ratio (Se = 58.5%; Sp = 86.8%), and GDx the number (Se = 43.3%; Sp = 96.7%). The construction of an ROC curve for the number resulted in Se = 84% and Sp = 79%. The creation of LDFs improved both the sensitivities and specificities when compared with isolated parameters SLP LDF (Se = 90.4%; Sp = 82.4%), VF LDF (Se = 89.4%; Sp = 89.0%), and combined LDF (Se = 93.0%; Sp = 90.1%). The sensitivity to diagnose early and moderate glaucomatous damage observed with the GHT was lower than that obtained with the number (p < 0.01). CONCLUSIONS Creation of LDFs enhanced the Se and Sp for both VF and SLP. Integration of SLP and VF in a combined LDF reached the highest Se/Sp relation, suggesting that these examinations may be additive concerning the diagnosis of glaucoma. The SLP parameter the number may be more sensitive than the GHT in diagnosing early and moderate glaucomatous damage.
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Affiliation(s)
- R Lauande-Pimentel
- Glaucoma Service, Department of Ophthalmology, University of Campinas, Brazil.
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