ArticleNutrients2020
L-Theanine Reduced the Development of Knee Osteoarthritis in Rats via Its Anti-Inflammation and Anti-Matrix Degradation Actions: In Vivo and In Vitro Study.
Article in Nutrients, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
20 citing papers in PubMed, 40 citations in OpenAlex.
- Pharmaceutical Activities of Theanine: A Phytochemical Nutrient.Food science & nutrition · 2025Review
- Pain Management with Natural Products: Neurophysiological Insights.International journal of molecular sciences · 2025Review
- L-theanine promotes angiogenesis in limb ischemic mice by modulating NRP1/VEGFR2 signaling.Biomolecules & biomedicine · 2025Article
- L-theanine alleviates myocardial ischemia/reperfusion injury by suppressing oxidative stress and apoptosis through activation of the JAK2/STAT3 pathway in mice.Molecular medicine (Cambridge, Mass.) · 2024Article
- Knee osteoarthritis: A review of animal models and intervention of traditional Chinese medicine.Animal models and experimental medicine · 2024Review
- Oxymatrine protects articular chondrocytes from IL-1β-induced damage through autophagy activation via AKT/mTOR signaling pathway inhibition.Journal of orthopaedic surgery and research · 2024Article
- Ononin delays the development of osteoarthritis by down-regulating MAPK and NF-κB pathways in rat models.PloS one · 2024Article
- Combined detection of serum CTX-II and C2C in a rat model of ACLT-induced osteoarthritis.FEBS open bio · 2023Article
- L-Theanine and Immunity: A Review.Molecules (Basel, Switzerland) · 2023Review
- Article
- Ozone induces autophagy by activating PPARγ/mTOR in rat chondrocytes treated with IL-1β.Journal of orthopaedic surgery and research · 2022Article
- Chondroprotective Effects of 4,5-Dicaffeoylquinic Acid in Osteoarthritis through NF-κB Signaling Inhibition.Antioxidants (Basel, Switzerland) · 2022Article
- Ginkgolide C slows the progression of osteoarthritis by activating Nrf2/HO-1 and blocking the NF-κB pathway.Frontiers in pharmacology · 2022Article
- L-Theanine: A Unique Functional Amino Acid in Tea (Frontiers in nutrition · 2022Review
- Bilobalide Exerts Anti-Inflammatory Effects on Chondrocytes Through the AMPK/SIRT1/mTOR Pathway to Attenuate ACLT-Induced Post-Traumatic Osteoarthritis in Rats.Frontiers in pharmacology · 2022Article
- Cutoff points of T1 rho/T2 mapping relaxation times distinguishing early-stage and advanced osteoarthritis.Archives of medical science : AMS · 2022Article
- Emodin Attenuates the ECM Degradation and Oxidative Stress of Chondrocytes through the Nrf2/NQO1/HO-1 Pathway to Ameliorate Rat Osteoarthritis.Oxidative medicine and cellular longevity · 2022Article
- Role of Physical Exercise and Nutraceuticals in Modulating Molecular Pathways of Osteoarthritis.International journal of molecular sciences · 2021Review
- Intra-articular Injection of Baicalein Inhibits Cartilage Catabolism and NLRP3 Inflammasome Signaling in a Posttraumatic OA Model.Oxidative medicine and cellular longevity · 2021Article
- Experimental Therapeutics for the Treatment of Osteoarthritis.Journal of experimental pharmacology · 2021Review
Corrections and comments
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Authors and funding
10 authors at 2 institutions in 1 country.
Funding
Abstract
The etiology of osteoarthritis (OA) is multifactorial, with no effective disease-modifying-drugs. L-theanine has been reported to inhibit inflammatory responses in some diseases and this study aimed to investigate the effect of L-theanine on Interleukin-1(IL-1)β-stimulated chondrocytes, and in an injury-induced OA rat model. Primary chondrocytes were stimulated by IL-1β (10 ng/mL) for 24 h and then co-cultured with L-theanine for 24 h. The effects of L-theanine on IL-1β-stimulated expression of pro-inflammatory cytokines and hydrolytic enzyme were analyzed using Western blotting, quantitative polymerase chain reaction (q-PCR) and enzyme-linked immunosorbent assay (ELISA) kits. An immunofluorescence assay was used to detect nuclear factor kappa B (NF-κB) phosphorylation. OA was induced by anterior cruciate ligament transection (ACLT) surgery in rats and celecoxib was used as a positive control. OA severity was measured using the Osteoarthritis Research Society International (OARSI) grading system to describe histological changes. The results showed that L-theanine decreased the expression of pro-inflammatory mediators, including cyclooxygenase-2 (COX-2), prostaglandin E2 (PGE-2), inducible nitric oxide synthase (iNOS), and nitric oxide (NO), both in vivo and in vitro. L-theanine treatment inhibited IL-1β-induced upregulation of matrix metalloproteinases (MMP)-3 and MMP-13, as well as inhibited NF-κB p65 activation. In vivo animal model showed that L-theanine administration (200 mg/kg) significantly alleviated OA lesions and decreased OARSI score. Our data indicated that L-theanine decreased inflammatory cytokines and protected extracellular matrix degradation through inhibition of the NF-κB pathway, and L-theanine may be considered a promising therapeutic strategy in OA prevention.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.