RESUMO
BACKGROUND: Common variable immunodeficiency (CVID) is a primary immunodeficiency characterized by chronic/recurrent respiratory infections, bronchiectasis, autoimmunity, inflammatory, gastrointestinal diseases and malignancies associated with a chronic inflammatory state and increased risk of osteoporosis and muscle loss. AIM: The aim of this study was to evaluate bone mineral density (BMD), body composition and their relationship with lymphocyte subpopulations in CVID patients. METHODS: Dual-energy X-ray absorptiometry was performed to assess BMD, lean mass, and fat mass in CVID patients. Peripheral blood CD4+, CD8+, and CD19+ cells were measured using flow cytometry. RESULTS: Thirty-three patients (37.3 ± 10.8 years old) were examined. Although only 11.8% of the individuals were malnourished (BMI <18.5 kg/m2), 27.7% of them had low skeletal muscle mass index (SMI), and 57.6% of them had low BMD. Patients with osteopenia/osteoporosis presented lower weight (p = 0.007), lean mass (p = 0.011), appendicular lean mass (p = 0.011), SMI (p = 0.017), and CD4+ count (p = 0.030). Regression models showed a positive association between CD4+ count and bone/muscle parameters, whereas CD19+ B cell count was only associated with muscle variables. Analysis of ROC curves indicated a cutoff value of CD4+ count (657 cells/mm3; AUC: 0.71, 95% CI 0.52-0.90) which was related to low BMD. Weight (p = 0.004), lean mass (p = 0.027), appendicular lean mass (p = 0.022), SMI (p = 0.029), total bone mineral content (p = 0.005), lumbar (p = 0.005), femoral neck (p = 0.035), and total hip BMD (p<0.001) were found to be lower in patients with CD4+ count below the cutoff. CONCLUSION: CVID patients presented with low BMD, which was associated with CD4+ count. Moreover, low muscle parameters were correlated with B cell count.
Assuntos
Imunodeficiência de Variável Comum , Osteoporose , Humanos , Adulto , Pessoa de Meia-Idade , Densidade Óssea/fisiologia , Imunodeficiência de Variável Comum/complicações , Imunodeficiência de Variável Comum/diagnóstico , Osteoporose/diagnóstico , Osteoporose/etiologia , Colo do Fêmur , Músculos , Linfócitos T CD4-PositivosRESUMO
PURPOSE: To evaluate the effect of low-level laser therapy (LLLT) ë904 nm on healing of surgical wounds in rats. METHODS: Forty male Wistar rats were used, divided into four groups, underwent incision along the lines Alba covering skin, subcutaneous and muscle abdominal, sutured continuously for nylon 5-0. Eight and fifteen days after the surgery process, the repairing area was removed and histological sections were stained with hematoxylin-eosin to assess cellularity inflammatory, Masson's Trichrome and Picrossirus to quantify the collagen fibers and immunohistochemical technique for counting newly formed vessels. The data were compared statistically using analysis of variance ANOVA, with a "post-hoc Tukey test, p <0.05. RESULTS: Low-level laser therapy reduced the intensity of the inflammatory reaction and influenced the dynamic of the immunoinflammatory response by inducing switching of the leukocyte infiltration pattern (neutrophilic to lymphoplasmacytic infiltration). Also stimulate the deposition and enhance the organization of collagen fibers, featuring a delicate collagen type III. Furthermore, it appeared to a significant increase in the average number of newly formed vessels (p = 0.00 and p = 0.02, respectively). CONCLUSION: Low-level laser therapy resulted in modulate of the inflammatory response, enhanced deposition of collagen fibers and increase in the average number of newly formed vessels.
OBJETIVO: Avaliar o efeito da terapia laser de baixa potência (TLBP) ë904 nm na cicatrização de feridas cirúrgicas em ratos. MÉTODOS: Foram utilizados 40 ratos Wistar, machos, divididos em quatro grupos, submetidos à incisão na linha Alba abrangendo pele, subcutâneo e musculatura abdominal, suturados continuamente por fios de nylon 5-0. Oito e quinze dias após o procedimento cirúrgico, a área de reparo foi removida e os cortes histológicos foram corados com hematoxilina-eosina para avaliar celularidade do infiltrado inflamatório, Tricrômico de Masson e Picrosirius para quantificar as fibras de colágeno e técnica imuno-histoquímica para a contagem de vasos neoformados. Os dados foram comparados estatisticamente pela análise de variância ANOVA, com "teste de Tukey post-hoc, p <0,05. RESULTADOS: A terapia laser de baixa potência reduziu a intensidade da reação inflamatória e influenciou a dinâmica da resposta imuno por induzir a mudança do padrão de infiltração de leucócitos (neutrófilos a infiltração mononuclear). Como também estimula a deposição e melhora padrão organizacional das fibras colágenas, apresentando um delicado colágeno tipo III. Além disso, verificou-se um aumento significativo no número médio de vasos neoformados (p = 0,00 e p = 0,02, respectivamente). CONCLUSÃO: A terapia laser de baixa potência modula a resposta inflamatória, com melhor deposição de fibras colágenas e aumento do número médio de vasos neoformados.
Assuntos
Animais , Ratos/classificação , Terapia com Luz de Baixa Intensidade , Cicatrização/imunologia , Colágeno/análise , Inflamação/complicaçõesRESUMO
PURPOSE: To evaluate the effect of low-level laser therapy (LLLT) ë904 nm on healing of surgical wounds in rats. METHODS: Forty male Wistar rats were used, divided into four groups, underwent incision along the lines Alba covering skin, subcutaneous and muscle abdominal, sutured continuously for nylon 5-0. Eight and fifteen days after the surgery process, the repairing area was removed and histological sections were stained with hematoxylin-eosin to assess cellularity inflammatory, Masson's Trichrome and Picrossirus to quantify the collagen fibers and immunohistochemical technique for counting newly formed vessels. The data were compared statistically using analysis of variance ANOVA, with a "post-hoc Tukey test, p <0.05. RESULTS: Low-level laser therapy reduced the intensity of the inflammatory reaction and influenced the dynamic of the immunoinflammatory response by inducing switching of the leukocyte infiltration pattern (neutrophilic to lymphoplasmacytic infiltration). Also stimulate the deposition and enhance the organization of collagen fibers, featuring a delicate collagen type III. Furthermore, it appeared to a significant increase in the average number of newly formed vessels (p = 0.00 and p = 0.02, respectively). CONCLUSION: Low-level laser therapy resulted in modulate of the inflammatory response, enhanced deposition of collagen fibers and increase in the average number of newly formed vessels.(AU)
OBJETIVO: Avaliar o efeito da terapia laser de baixa potência (TLBP) ë904 nm na cicatrização de feridas cirúrgicas em ratos. MÉTODOS: Foram utilizados 40 ratos Wistar, machos, divididos em quatro grupos, submetidos à incisão na linha Alba abrangendo pele, subcutâneo e musculatura abdominal, suturados continuamente por fios de nylon 5-0. Oito e quinze dias após o procedimento cirúrgico, a área de reparo foi removida e os cortes histológicos foram corados com hematoxilina-eosina para avaliar celularidade do infiltrado inflamatório, Tricrômico de Masson e Picrosirius para quantificar as fibras de colágeno e técnica imuno-histoquímica para a contagem de vasos neoformados. Os dados foram comparados estatisticamente pela análise de variância ANOVA, com "teste de Tukey post-hoc, p <0,05. RESULTADOS: A terapia laser de baixa potência reduziu a intensidade da reação inflamatória e influenciou a dinâmica da resposta imuno por induzir a mudança do padrão de infiltração de leucócitos (neutrófilos a infiltração mononuclear). Como também estimula a deposição e melhora padrão organizacional das fibras colágenas, apresentando um delicado colágeno tipo III. Além disso, verificou-se um aumento significativo no número médio de vasos neoformados (p = 0,00 e p = 0,02, respectivamente). CONCLUSÃO: A terapia laser de baixa potência modula a resposta inflamatória, com melhor deposição de fibras colágenas e aumento do número médio de vasos neoformados.(AU)
Assuntos
Animais , Ratos/classificação , Terapia com Luz de Baixa Intensidade , Cicatrização/imunologia , Inflamação/complicações , Colágeno/análiseRESUMO
PURPOSE: To evaluate the effect of low-level laser therapy (LLLT) ë904 nm on healing of surgical wounds in rats. METHODS: Forty male Wistar rats were used, divided into four groups, underwent incision along the lines Alba covering skin, subcutaneous and muscle abdominal, sutured continuously for nylon 5-0. Eight and fifteen days after the surgery process, the repairing area was removed and histological sections were stained with hematoxylin-eosin to assess cellularity inflammatory, Masson's Trichrome and Picrossirus to quantify the collagen fibers and immunohistochemical technique for counting newly formed vessels. The data were compared statistically using analysis of variance ANOVA, with a "post-hoc Tukey test, p <0.05. RESULTS: Low-level laser therapy reduced the intensity of the inflammatory reaction and influenced the dynamic of the immunoinflammatory response by inducing switching of the leukocyte infiltration pattern (neutrophilic to lymphoplasmacytic infiltration). Also stimulate the deposition and enhance the organization of collagen fibers, featuring a delicate collagen type III. Furthermore, it appeared to a significant increase in the average number of newly formed vessels (p = 0.00 and p = 0.02, respectively). CONCLUSION: Low-level laser therapy resulted in modulate of the inflammatory response, enhanced deposition of collagen fibers and increase in the average number of newly formed vessels.