Keywords
Crocus Herbal Medicine Molecular Mechanisms of Pharmacological Action
Saffron, the dried stigma of the plant Crocus sativus L. (a member of Iridaceae family) has a distinct color, flavor and smell. It is widely used as a spice, and as a coloring and flavoring agent in the preparation of foods and cosmetics. According to chemical analysis, more than 150 chemicals are present in saffron stigmas among which, the three main chemical compounds including crocins (mono and diglycosyl esters of a polyene dicarboxylic acid, named crocetin), picrocrocin (a precursor of safranal), and safranal (monoterpen aldehyde) are responsible for saffron exclusive color, taste, and odor, respectively (1-3). Various pharmacological activities of saffron and its constituents have been extensively studied including: anticancer, antidepressant, anti-Parkinson, anti-Alzheimer, anticonvulsant, anti-ischemic (such as brain, kidney, muscular and heart ischemia), anti-hypertensive, anti-genotoxic, and antidote (e.g. against snake venom, diazinon, acrylamide or acrolein), antitussive, hypolipidemic, antioxidant, antinociceptive, and anti-inflammatory effects. Some clinical studies about saffron and its constituents have been cited in the literature such as safety evaluation, aphrodisiac, antidepressant, and anti-Alzheimer effects (3-5).
In traditional medicine in various countries, saffron has been used for various purposes including analgesic and anti-inflammatory (earache, tooth-ache, swelling, otitis, anal pain, gout, cancer pain, gingivitis, discomfort of teething infants), cardiovascular system (cardiac stimulant, removes blockages of vascular), central nervous system (narcotic, antihysteric, CNS stimulant, hypnotic, mental disease, sedative, anticonvulsant, neurasthenia), eye disease (painful eye, lacrimation, day blindness, corneal disease and cataract, purulent eye infection, pterygium, poor vision), gastrointestinal system (stomachic, anorexia, treatment of hemorrhoid, prolapse of anus, jaundice, and enlargement of the liver, antiflatulent), genitourinary system (abortion, treatment of amenorrhea, aphrodisiac, impotency, emmenagogue, stimulate menstruation, prolapse of anus, stop menstrual periods, promote menstruation, use in puerperium period, terminate pregnancy, painful urination, diuretic, kidney stone), infection disease (antibacterial, antiseptic, anti‐fungal, measles, smallpox, scarlet fever), respiratory system (asthma, bronchitis, expectorant, pertussis, dyspnea, pleurisy, antitussive, diphtheria, disability tonsils resulting snoring, respiratory decongestant, expectorant), skin disease (treatment of psoriasis, eczema, acne, wound), and miscellaneous (immunostimulant, diaphoretic, tissue coloration, anticancer) (6). Saffron and its constituents have shown multiple useful effects, especially on CNS and against cancer. However, clinical evidence is still scarce in this regard and more comprehensive studies with special focus on human clinical trials is required.
Acknowledgements
References
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1.
Bathaie SZ, Mousavi SZ. New applications and mechanisms of action of saffron and its important ingredients. Crit Rev Food Sci Nutr. 2010;50(8):761-86. [PubMed ID: 20830635]. https://doi.org/10.1080/10408390902773003.
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2.
Rezaee R, Hosseinzadeh H. Safranal: from an aromatic natural product to a rewarding pharmacological agent. Iran J Basic Med Sci. 2013;16(1):12-26. [PubMed ID: 23638289].
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Alavizadeh SH, Hosseinzadeh H. Bioactivity assessment and toxicity of crocin: A comprehensive review. Food Chem Toxicol. 2013. [PubMed ID: 24275090]. https://doi.org/10.1016/j.fct.2013.11.016.
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Mohamadpour AH, Ayati Z, Parizadeh MR, Rajbai O, Hosseinzadeh H. Safety Evaluation of Crocin (a constituent of saffron) Tablets in Healthy Volunteers. Iran J Basic Med Sci. 2013;16(1):39-46. [PubMed ID: 23638291].
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Modaghegh MH, Shahabian M, Esmaeili HA, Rajbai O, Hosseinzadeh H. Safety evaluation of saffron (Crocus sativus) tablets in healthy volunteers. Phytomedicine. 2008;15(12):1032-7. [PubMed ID: 18693099]. https://doi.org/10.1016/j.phymed.2008.06.003.
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Hosseinzadeh H, Nassiri-Asl M. Avicenna's (Ibn Sina) the Canon of Medicine and saffron (Crocus sativus): a review. Phytother Res. 2013;27(4):475-83. [PubMed ID: 22815242]. https://doi.org/10.1002/ptr.4784.