Phytochemistry and Pharmacological Properties of Peganum Harmala
Summary
Peganum harmala, commonly known as Syrian rue, is a perennial herb whose seeds and aerial parts are rich in diverse alkaloids and phenolic compounds. The principal phytochemicals include beta-carboline alkaloids (harmine, harmaline, harmalol) and quinazoline derivatives (vasicine, vasicinone), alongside flavonoids and tannins. These constituents underpin a wide spectrum of biological activities. Antioxidant potential arises from free-radical scavenging by phenolics, while anti-inflammatory effects involve inhibition of protein denaturation and modulation of cytokine cascades. Broad-spectrum antimicrobial properties reflect disruption of microbial membranes, induction of reactive oxygen species and interference with nucleic acid synthesis. Neuroprotective and cholinesterase-inhibitory actions have been attributed to beta-carboline alkaloids, prompting investigation for neurodegenerative disorders. Cytotoxic and antiproliferative activities against cancer cell lines have been linked to mitochondrial and kinase-mediated apoptosis. Traditional uses span treatment of respiratory disorders, gastrointestinal ailments, rheumatism and pain relief. Safety profiles vary according to dose and preparation, with acute toxicity observed at high alkaloid concentrations. Contemporary research emphasises optimisation of extraction, fractionation and formulation to enhance efficacy while minimising toxicity, and explores agricultural, antimicrobial and pharmaceutical applications of P. harmala metabolites.
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Phytochemistry and Pharmacological Properties of Peganum Harmala publication trend
The graph below shows the total number of articles in phytochemistry and pharmacological properties of peganum harmala across all publications each year (not limited to Nature Index journals).
Technical terms
Beta-carboline alkaloids: Nitrogenous compounds with a tricyclic structure, exemplified by harmine, displaying central nervous system and anticancer activities.
Bioassay-guided fractionation: Sequential extraction and chromatographic separation directed by biological activity assays to isolate bioactive compounds.
IC50: Concentration of a substance required to inhibit a given biological process or radical scavenging activity by 50% in vitro.
Reactive oxygen species (ROS): Highly reactive molecules derived from oxygen, capable of damaging cellular components, often targeted in antimicrobial and antioxidant studies.
References
- Antioxidant and Anti-Inflammatory Effects of Peganum harmala Extracts: An In Vitro and In Vivo Study. Molecules (2021).
- Cytotoxic Indole Alkaloids against Human Leukemia Cell Lines from the Toxic Plant Peganum harmala. Toxins (2015).
- Antibacterial, Antifungal, Antiviral, and Antiparasitic Activities of Peganum harmala and Its Ingredients: A Review. Molecules (2022).
- Peganum spp.: A Comprehensive Review on Bioactivities and Health‐Enhancing Effects and Their Potential for the Formulation of Functional Foods and Pharmaceutical Drugs. Oxidative Medicine and Cellular Longevity (2021).
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