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RISS 인기검색어
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- 저자 : Juliana J. Moreira (검색결과 2 건)
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Autologous processed plasma: cytokine profile and effects upon injection into healthy equine joints
Juliana J. Moreira,Ana Paula L. Moraes,Patrícia M. Brossi,Thaís S.L. Machado,Yara M. Michelacci,Cristina O. Massoco,Raquel Y.A. Baccarin 대한수의학회 2015 Journal of Veterinary Science Vol.16 No.1
This experimental controlled study was performed to evaluate the composition of autologous processed plasma (APP), and the effects of APPintra-articular injection into healthy equine metacarpophalangeal joints. The effects on joints were analysed with a short-phase protocol anda prolonged-phase protocol using saline-injected joints as controls. For the short protocol, horses received one intra-articular APP injection. Synovial fluid samples were collected prior to the injection and 3, 6, 24, 48, and 16 h after treatment. For the prolonged protocol, the jointsreceived three weekly injections of APP, and samples were collected at 0, 7, 14, 21, and 28 days before APP administration. IL1-ra level wasfound to be increased in APP compared to plasma. Upon intra-articular administration of APP, transient (up to 24 h) increases in white bloodcell (WBC) counts along with elevated protein and prostaglandin E2 (PGE2) concentrations were observed in the treated joints. Over the 28-dayobservation period, APP did not elicit changes relative to baseline levels, but WBC counts, PGE2 and chondroitin sulphate concentrationswere lower than those found in the control. In conclusion, APP intra-articular injection induced a mild and transitory inflammatory responsebut no inflammation reaction was observed over a longer period of treatment and observation.
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Henrique M. Neuenschwander,Juliana J. Moreira,Cynthia P. Vendruscolo,Joice Fülber,Sarah R. T. Seidel,Yara M. Michelacci,Raquel Y. A. Baccarin 대한수의학회 2019 Journal of Veterinary Science Vol.20 No.6
The intra-articular use of hyaluronic acid (HA) for the treatment of synovitis and osteoarthritis is still controversial. As a consequence, corticosteroids remain the most frequently employed therapeutic agents, despite their potential systemic and local deleterious effects. This study examined the anti-inflammatory, antioxidant, and chondroprotective activities of low and high molecular weight hyaluronic acid (LMW-HA and HMW-HA) on lipopolysaccharide (LPS)-induced synovitis in horses compared to triamcinolone acetonide (TA). LPS was injected in the metacarpophalangeal joints, which were treated intra-articularly with either TA (as control) or LMW-HA or HMW-HA. Joint clinical evaluation and synovial fluid (SF) analysis were performed at 0, 8, 24, and 48 h. The white blood cell counts (WBC), prostaglandin E2 (PGE2), interleukin (IL)-1, IL-6, IL-10, tumor necrosis factor-α, chondroitin sulfate (CS) and HA concentrations, oxidative burst, and HA molecular weights were measured. TA reduced the lameness, swelling, and PGE2 release but increased the SF CS concentrations enormously at 24 h and 48 h. In contrast, TA decreased the SF HA modal molecular weight. These results indicate the breakdown of articular cartilage aggrecan and SF HA. In contrast, LMW-HA and HMW-HA were less effective in reducing the inflammation symptoms, but preserved the joints because only a modest increase in CS occurred at 24 h, decreasing at 48 h, and the SF HA was maintained. The HA-treatment also had anti-inflammatory actions, and LMW-HA was the most effective in reducing the release of cytokine. In summary, the HA treatment inhibited efficiently the digestion of cartilage proteoglycans and SF HA breakdown.
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