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Updated: Nov 17, 2025

Ameliorating Osteoarthritis in Mice Using Silver Nanoparticles
Published on: June 2, 2023
Recent advances in nanotherapeutic strategies that target nitric oxide pathway for preventing cartilage degeneration
Himadri Shekhar Roy1, Rupali Singh1, Deepa Ghosh1
1Chemical Biology Unit, Institute of Nanoscience and Technology (INST), Sector-81, Knowledge City, Mohali, Punjab 140306, India.
Abstract:
Nitric oxide (NO) is an important inflammatory mediator involved in the development and progression of osteoarthritis (OA). Increased production of NO in the affected joints promote cartilage damage. As NO synthesis is catalysed by the inducible NO synthase (iNOS) enzyme, iNOS inhibition serves as an attractive therapeutic target to prevent NO release. Despite a number of direct and indirect iNOS inhibitor molecules demonstrating chondro-protective effect, none have reached the clinic. Its limited bioavailability and adverse side effects served as a deterrent for pursuing clinical trials in OA patients. With the advent of nanotechnology, interest in targeting NO for preventing cartilage degeneration has revived. In this article, we discuss the limitations of the existing molecules and provide an insight on recent nanotechnology-based strategies that have been explored for the diagnosis and inhibition of NO in OA. These approaches hold promise in reviving the hitherto under explored potential of targeting NO to address OA.
Insights
Nitric oxide (NO) drives osteoarthritis (OA) by damaging cartilage. Nanotechnology offers new ways to target NO and its source, inducible NO synthase (iNOS), for OA treatment, overcoming previous drug limitations.
Area of Science:
- Biomedical Engineering
- Molecular Biology
- Rheumatology
Background:
- Nitric oxide (NO) is a key inflammatory mediator in osteoarthritis (OA) pathogenesis.
- Elevated NO levels in joints contribute to cartilage degradation.
- Inducible NO synthase (iNOS) catalyzes NO synthesis, making it a therapeutic target.
Purpose of the Study:
- To review limitations of current NO-targeting molecules for OA.
- To explore nanotechnology-based strategies for OA diagnosis and NO inhibition.
- To assess the potential of NO-targeting approaches in OA management.
Main Methods:
- Discussion of existing iNOS inhibitors and their clinical drawbacks.
- Review of recent nanotechnology applications for NO modulation in OA.
- Analysis of diagnostic and therapeutic nanotechnology-based strategies.
Main Results:
- Existing iNOS inhibitors face challenges with bioavailability and side effects, hindering clinical application.
- Nanotechnology-based strategies show promise for targeted NO inhibition and OA diagnosis.
- These novel approaches may overcome limitations of conventional therapies.
Conclusions:
- Targeting NO remains a promising strategy for OA treatment.
- Nanotechnology provides innovative solutions to enhance NO inhibition and diagnosis in OA.
- Further development of nanotechnology-based NO-targeting agents is warranted for OA therapeutics.
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