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Development and characterization of various osteoarthritis models for tissue engineering
Ji Eun Kim1,2, Da-Hyun Song3, Soo Hyun Kim1,2,4
1KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, Korea.
Plos One
|March 14, 2018
Summary
This study evaluates various animal models for osteoarthritis (OA) research. Spontaneous Dunkin-Hartley guinea pigs offer a slow-progressing model similar to human primary OA, alongside chemical and surgical induction methods.
Area of Science:
- Biomedical research
- Orthopedics
- Animal modeling
Background:
- Osteoarthritis (OA) is a prevalent chronic condition characterized by cartilage loss, bone sclerosis, and inflammation.
- Current treatments primarily manage OA symptoms rather than addressing underlying pathology.
- Developing effective OA therapies requires robust animal models that accurately mimic human disease progression.
Purpose of the Study:
- To investigate and compare various animal models for inducing and studying osteoarthritis (OA) pathology.
- To evaluate the suitability of spontaneous and induced OA models for preclinical research.
- To identify optimal models for understanding OA pathogenesis and testing novel therapeutics.
Main Methods:
- Osteoarthritis (OA) was induced in rats, rabbits, and guinea pigs using chemical (sodium monoiodoacetate - MIA), surgical (anterior cruciate ligament transection with medial meniscectomy - ACLT, bilateral ovariectomy - OVX), and naturally occurring methods.
- Histological analysis and micro-computed tomography (micro-CT) were employed to assess OA changes.
- Spontaneous OA development was monitored over time in Dunkin-Hartley guinea pigs.
Main Results:
- Anterior cruciate ligament transection (ACLT) in rats induced significant OA changes compared to ovariectomy (OVX).
- ACLT surgery in rabbits led to a marked increase in osteoarthritic changes.
- Spontaneous OA in Dunkin-Hartley guinea pigs showed time-dependent pathological progression, with significant histological changes observed at 9.5 months, comparable to MIA-induced OA.
Conclusions:
- Various animal models, including spontaneous and induced OA, are valuable for studying osteoarthritis pathology.
- The Dunkin-Hartley guinea pig model provides a slow, progressive OA phenotype relevant to human primary OA.
- Both rapid induction (MIA) and slow progression (spontaneous) models are crucial for comprehensive OA research and therapeutic development.
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