Pharmacological Effects of Flavonoids in Chronic Diseases

Flavonoids are a broad class of polyphenolic compounds abundant in fruits, vegetables and medicinal herbs, renowned for their antioxidant, anti-inflammatory and signalling-modulatory properties. In chronic cardiovascular disorders, these agents enhance endothelial function, stabilise microvascular tone and attenuate oxidative stress by scavenging reactive oxygen species. In metabolic diseases such as diabetes, flavonoids improve glucose homeostasis through modulation of insulin signalling and suppression of pro-inflammatory cytokines. Neuroprotective effects have been observed in models of cognitive impairment, where certain flavones bolster antioxidant defences and counteract stress-induced elevations in corticosterone. In oncology, O-methylated flavones can induce cell-cycle arrest and apoptosis in tumour cells via inhibition of key pathways such as NF-κB and MAPK, while sparing non-malignant tissues. Despite these promising activities, clinical translation has been limited by poor bioavailability and rapid metabolism; recent advances in formulation science, targeted delivery systems and sustainable biosynthetic production are addressing these hurdles. Collectively, current research underscores the potential of flavonoids as multifaceted agents for prevention and adjunctive therapy in a range of chronic diseases.

Research from Nature Portfolio

Recent studies have elucidated the molecular mechanisms underlying the anticancer activity of the flavone diosmetin in colorectal carcinoma cells. Investigations demonstrated that diosmetin induces G2/M cell-cycle arrest, triggers mitochondrial release of cytochrome c and activates caspase cascades, leading to programmed cell death. Concurrent inhibition of NF-κB nuclear translocation attenuates survival signalling, while minimal effects are observed in normal colon fibroblasts. These findings identify critical targets—mitotic regulators, pro-apoptotic factors and inflammatory transcription programmes—that mediate selective cytotoxicity, paving the way for flavonoid-based therapeutic strategies against treatment-resistant tumours.

Pharmacological Effects of Flavonoids in Chronic Diseases publication trend

The graph below shows the total number of articles in pharmacological effects of flavonoids in chronic diseases across all publications each year (not limited to Nature Index journals).

Technical terms

Flavonoid: A class of plant-derived polyphenolic compounds with antioxidant and regulatory effects on cellular signalling.

Reactive oxygen species (ROS): Highly reactive molecules derived from oxygen that can damage cellular components.

NF-κB: A nuclear transcription factor that controls expression of genes involved in inflammation and cell survival.

Apoptosis: Programmed cell death characterised by caspase activation, DNA fragmentation and formation of apoptotic bodies.

Cytokine: A small secreted protein that mediates and regulates immune and inflammatory responses.

Bioavailability: The proportion of an administered substance that reaches systemic circulation in an active form.

References

1. Tailored biosynthesis of diosmin through reconstitution of the flavonoid pathway in Nicotiana benthamiana. Frontiers in Plant Science (2024).
2. Potential and Therapeutic Roles of Diosmin in Human Diseases. Biomedicines (2022).
3. Diosmin and Bromelain Stimulate Glutathione and Total Thiols Production in Red Blood Cells. Molecules (2023).
4. Potential Therapeutic Anti-Inflammatory and Immunomodulatory Effects of Dihydroflavones, Flavones, and Flavonols. Molecules (2020).
5. Investigation into the Molecular Mechanisms underlying the Anti-proliferative and Anti-tumorigenesis activities of Diosmetin against HCT-116 Human Colorectal Cancer. Scientific Reports (2019).
6. Diosmetin Mitigates Cognitive and Memory Impairment Provoked by Chronic Unpredictable Mild Stress in Mice. Evidence-based Complementary and Alternative Medicine (2020).