Immunomodulators Inspired by Nature: A Review on Curcumin and Echinacea.

Catanzaro Michele, et al.
Molecules, 2018

Abstract

The immune system is an efficient integrated network of cellular elements and chemicals developed to preserve the integrity of the organism against external insults and its correct functioning and balance are essential to avoid the occurrence of a great variety of disorders. To date, evidence from literature highlights an increase in immunological diseases and a great attention has been focused on the development of molecules able to modulate the immune response. There is an enormous global demand for new effective therapies and researchers are investigating new fields. One promising strategy is the use of herbal medicines as integrative, complementary and preventive therapy. The active components in medical plants have always been an important source of clinical therapeutics and the study of their molecular pharmacology is an enormous challenge since they offer a great chemical diversity with often multi-pharmacological activity. In this review, we mainly analysed the immunomodulatory/antinflammatory activity of Echinacea spp. and Curcuma longa, focusing on some issues of the phytochemical research and on new possible strategies to obtain novel agents to supplement the present therapies.

Keywords

Echinacea; curcumin; curcumin analogues; immune system; immunomodulators; signal transduction pathways.

Conflict of interest statement

The authors confirm that there are no known conflicts of interest associated with this publication.

Figures

A schematic representation of the main molecular pathways linked to inflammatory and immunomodulatory activities modulated by Curcumin and Echinacea

A schematic representation of the main molecular pathways linked to inflammatory and immunomodulatory activities modulated by Curcumin and Echinacea. The solid red line indicates the activation of the pathway, whereas the truncated red line indicates inhibition of the pathway. JAK: Janus kinase; STAT: Signal Transducers and Activators of Transcription; SOCS: Suppressor of Cytokine Signalling proteins; TLR-4: Toll-like Receptor-4; MyD88: Myeloid Differentiation primary response 88; NF-κB: Nuclear Factor kappa B; MAPK: Mitogen-Activated Protein Kinase; COX-2: cyclooxygenase-2; iNOS: inducible Nitric Oxide Synthase; HO-1: Heme Oxygenase-1; IL: Interleukin; TNF: Tumor Necrosis Factor.

PMID:30373170
DOI:10.3390/molecules23112778
PMCID (Free PMC Article):PMC6278270
Category:Immune

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