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Objective  To evaluate the effects of hydrolyzed collagen and collagen peptide in the treatment of superficial chondral lesions in rats. Method  This research employed 18 Rattus norvegicus . A single intraarticular infiltration of sodium iodoacetate (2 mg solution) through the patellar ligament induced joint damage in previously anesthetized animals. We divided the animals into three groups: a control group, a collagen peptide group, and a hydrolyzed collagen group. Treatment consisted of oral administration of collagen peptide or hydrolyzed collagen for 30 days. Afterwards, we euthanized the animals and studied the joint chondral changes. We evaluated the results according to the chondrocyte clusters count and a histological evaluation, as per Pritzker et al. Results  There was no statistical significance in injury stages between the control, hydrolyzed collagen, and collagen peptide groups ( p  = 0.11). Regarding scores, there was a statistical significance between the groups treated with hydrolyzed collagen and collagen peptide ( p  &lt; 0.05), but not in comparison with the control group. Conclusion  The proposed treatments of the induced chondral lesion with the oral administration of hydrolyzed collagen or collagen peptides were effective, resulting in lesion stabilization or regression, and warranting further experimental research to understand and improve the primary outcome of this study.

Os efeitos do colágeno hidrolisado e do peptídeo de colágeno no tratamento de lesões condrais superficiais: Um estudo experimental