Low-Intensity Pulsed Ultrasound Suppresses Synovial Macrophage Infiltration and Inflammation in Injured Knees in Rats.
Ultrasound Med Biol
; 47(4): 1045-1053, 2021 04.
Article
em En
| MEDLINE
| ID: mdl-33423862
ABSTRACT
This study was designed to investigate how low-intensity pulsed ultrasound (LIPUS) suppresses traumatic joint inflammation and thereafter affects the progression of posttraumatic osteoarthritis. Intra-articular fracture (IAF) was created in the right knee of rats. LIPUS was applied to the knees with IAFs for 20 min/d for 2 wk-LIPUS(+) group. The study controls included rats that underwent sham surgery but no LIPUS treatment (control group) or underwent IAF surgery without LIPUS treatment-LIPUS(-) group. By histology, at 4 wk, leukocyte infiltration in the synovium was reduced in the LIPUS(+) group. Furthermore, LIPUS treatment reduced CD68+ macrophages in the synovium and limited their distribution mostly in the subintimal synovium. Measured with enzyme-linked immunosorbent assay, interleukin-1ß (IL-1ß) in the joint fluid of the LIPUS(+) group was reduced to about one-third that in the LIPUS(-) group. By reducing synovial macrophages and lowering IL-1ß in the joint fluid, LIPUS is potentially therapeutic for posttraumatic osteoarthritis.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Membrana Sinovial
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Fraturas da Tíbia
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Terapia por Ultrassom
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Fraturas Intra-Articulares
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Traumatismos do Joelho
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Macrófagos
Tipo de estudo:
Etiology_studies
Limite:
Animals
Idioma:
En
Revista:
Ultrasound Med Biol
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Estados Unidos