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Latest publication 08/26/2020

Rheumatoid pain models in rodents and the application of dynamic weight-bearing

Rheumatoid arthritis (RA) is an autoimmune systemic disease of unknown etiology, characterized by chronic inflammation and synovial infiltration of...

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    [title] => Rheumatoid pain models in rodents and the application of dynamic weight-bearing 
    [paragraph] => Rheumatoid pain models in rodents and the application of dynamic weight-bearing test
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Authors
D Geng, L Wang, NQ Liu

 Lab
Department of Orthopaedic Surgery, University of Southern California, Los Angeles, California, USA
Journal
Digital Medicine
Abstract
Rheumatoid arthritis (RA) is an autoimmune systemic disease of unknown etiology, characterized by chronic inflammation and synovial infiltration of immune cells. Pain is one of the most dominant symptoms for patients with RA, which affects the health and quality of life. Animal models are helpful to study the pathogenesis of RA and related factors and mechanisms of RA-induced pain, which may aid in the development of new and better treatment strategies. Several animal models of RA have been validated to predict for efficacy in humans that include collagen type II-induced arthritis in rats and mice, adjuvant-induced arthritis in rats, and antigen induced arthritis in several species. However, the quantitative evaluation of pain in animal models is technically challenging. Until recent years, behavior methods are used to characterize acute and chronic pain stages by observing behavioral changes in preclinical arthritis models. Significant progress has been made in pain assessment with the development of nonreflexive tools, dynamic weight-bearing (DWB) apparatus was developed for the measurement of pain in rodents by capturing weight-bearing and surface distribution of the paws. In this article, we summarize several classical animal models of rheumatoid pain as well as discussion of the advantages and disadvantages of DWB test for spontaneous pain used in these models.
BIOSEB Instruments Used
Dynamic Weight Bearing 2.0 (BIO-DWB-DUAL)
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The advanced version of our Dynamic Weight Bearing Test for rodents (rats and mice) allows for faster paw identification, based on a video solution taking advantage of the most advanced algorithms of morphologic analysis, weight distribution and postural changes in dynamic conditions. An efficient and advanced alternative to traditional incapacitance tests (i.e. the paw pressure test or the force plate test) for assessing pain sensitivity in your research on analgesia, hyperalgesia and nociception involving rats and mice, including work on osteoarthritis, bone cancer, analgesic substances, Parkinson disease, allodynia...

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Expand Your Analysis with Advanced Postural and Locomotor Calculations
BIOSEB’s renowned Dynamic Weight Bearing (DWB2) system is now more powerful than ever with the addition of the Postural Module. This optional software upgrade extends standard weight-bearing analysis by integrating unique calculations designed to quantify subtle aspects of postural balance, locomotor patterns, and compensatory behaviors.
Developed in collaboration with Dr. Tighilet’s lab from Aix Marseille Université-CNRS, the Postural Module improves your DWB2, providing valuable endpoints for studies on pain, neurology, vestibular dysfunction, and neurodegenerative disorders.

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