ArticleNutrients2025
Anthocyanin-Rich Fraction from Kum Akha Black Rice Attenuates NLRP3 Inflammasome-Driven Lung Inflammation In Vitro and In Vivo.
Article in Nutrients, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Article
- Whole-GrainMolecules (Basel, Switzerland) · 2026Article
- Extracts of Black Glutinous Rice Influenced Memory Impairment and Anxiety-Like Behavior associated with Kidney Stones in Rats.Preventive nutrition and food science · 2026Article
- Beyond pathogens: a narrative review of the immunological nexus of damage-associated molecular patterns and inflammasome activation in sterile AECOPD.Frontiers in immunology · 2026Review
- Black rice as the emerging functional food: bioactive compounds, therapeutic potential and industrial applications.Frontiers in nutrition · 2025Review
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Authors and funding
8 authors.
Funding
Abstract
BACKGROUND/
objectivesChronic lower respiratory tract inflammation can result from exposure to bacterial particles, leading to the activation of the NLRP3 inflammasome pathway. These effects may cause irreversible respiratory damage, contributing to persistent lung injury and chronic obstructive pulmonary disease (COPD), as observed in long COVID or bacterial pneumonia in older adults' patients. Given its profound impact, the NLRP3 inflammasome has emerged as a key therapeutic target for mitigating aberrant inflammatory responses.
methodsIn this study, we investigated the anti-inflammatory effects of Kum Akha black rice, a functional food, on the attenuation of NLRP3 inflammasome pathway using lipopolysaccharide-induced A549 lung epithelial cells and a C57BL/6NJcl mouse model. The anthocyanin-rich fraction from Kum Akha black rice germ and bran extract (KA1-P1) was obtained using a solvent-partitioned extraction technique.
resultsKA1-P1 exhibited a high anthocyanin content (74.63 ± 1.66 mg/g extract) as determined by the pH differential method. The HPLC analysis revealed cyanidin-3-O-glucoside (C3G: 45.58 ± 0.48 mg/g extract) and peonidin-3-O-glucoside (P3G: 6.92 ± 0.29 mg/g extract) as its anthocyanin's active compounds. Additionally, KA1-P1 demonstrated strong antioxidant activity, as assessed by DPPH and ABTS assays. KA1-P1 (12.5-100 μg/mL) possessed inhibitory effects on LPS + ATP-induced A549 lung cells inflammation through the significant suppressions of
conclusionsOverall, our findings suggest that the anti-inflammatory properties of KA1-P1 may support its application as a functional supplement or promote the consumption of pigmented rice among the elderly to mitigate chronic lower respiratory tract inflammation mediated by the NLRP3 inflammasome pathway.
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