Histomorphometric analysis of the pectoralis major muscle of elderly and non-elderly autopsied patients with and without AIDS

• Autor(a) principal: Pereira , Vandair Gonçalves
• Data de Publicação: 2021
• Outros Autores: Rocha, Lourrayne Andressa, Ferreira , Flávio José Pereira de Almeida, Teixeira, Vicente de Paula Antunes, Silva , Aline Cristina Souza da, Rosa, Rodrigo César, Espindula, Ana Paula
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Research, Society and Development
• Texto Completo: https://rsdjournal.org/index.php/rsd/article/view/18516
• topic: Células musculares; Ancianos; Síndrome de inmunodeficiencia adquirida.; Muscle cells; Elderly; Acquired immunodeficiency syndrome.; Células musculares; Idosos; Síndrome da imunodeficiência adquirida.

Introduction: The Acquired Immunodeficiency Syndrome (AIDS), an infectious disease, where the main characteristic is the suppression of immunity by T CD4 lymphocytes. Objective: To analyze the percentage of myocytes and collagen fiber density from autopsied fragments of skeletal striated musculature from elderly and non-elderly patients with and without AIDS. Methodology: Retrospective, observational, analytical and quantitative study carried out from 78 divided into four groups, elderly and non-elderly with and without AIDS, aged between 44 and 63 years. Results: For histomorphometric analysis of the percentage of myocytes using Hematoxylin and eosin methods and for collagen fibers and Picrosirius under polarized light, both were performed under ordinary light microscopy. Results: There was a statistically defined decrease in nuclei in the non-elderly groups with and without AIDS and elderly with AIDS compared to the elderly groups without AIDS (p˂0,001). Collagen fibers in the non-elderly and non-deaf AIDS groups were higher when compared to the elderly groups with and without AIDS (p=0,001). The correlation between nucleus and cytoplasm was negative and low in the four groups (p <0,0001), between collagen fibers and nucleus, non-elderly people without AIDS (p<0,0012) and non-elderly people with AIDS (p<0,0368) was negative and decreased, between cytoplasm and collagen fibers the non-elderly group with AIDS (p<0,0353) and non-elderly without AIDS (p<0,0012) was negative and decreased. Conclusion: Aging and AIDS influence the loss of muscle mass and contribute to the reduction of collagen fibers.