Picrorhiza kurroa Royle ex Benth. is one of the most commonly used plant species in traditional medicinal practices of the Himalayan region, specifically for treatment of various immune related disorders and in asthma, chronic diarrhea and typhoid fever. P. kurroa is known for its diverse pharmacological properties, including reports of anticancer, hepatoprotective, immunomodulatory, antimicrobial, antioxidant, antiallergic, anti-asthmatic activities. P. kurroa is a perennial herb found in the Himalayas at an altitude of 3500-4800 m. The species phytochemistry includes iridoids, terpenoids, flavonoids, phenolic acids, steroids and their glycosides as the key classes of secondary metabolites; at least 65 bioactive compounds have been isolated from different parts of this plant.
Reports of recent overexploitation of this plant, owing to its wide range of therapeutic potential, places it among the list of the endangered medicinal herbs of the Himalayas. The authors of this review present up to date data on conservation, agro-techniques, biotechnology, sustainable harvesting, traditional uses, phytochemistry and pharmacological potential of P. kurroa, an important medicinal herb of the western Himalayas.
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October 2021
Process Biochemistry
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Abstract
Secondary metabolites obtained from natural sources have played an important role in health care in modern as well as ancient times. Around 60% of recently approved drugs are prepared using various natural sources. For example, the various traditional medicinal systems like Ayurveda, Yunani and Traditional Chinese Medicines etc., make use of various plant species and their extracts for treatment of numerous human disorders. Picrorhiza kurroa Royle ex Benth. is one of the most employed plant species in traditional medicinal practices of the Himalayan region, specifically, for treatment of various immune related disorders. Furthermore, P. kurroa is widely known for its diverse pharmacological properties: anticancer, hepatoprotective, immunomodulatory, antimicrobial, antioxidant, antiallergic, anti-asthmatic etc. Further, iridoids, terpenoids, flavonoids, phenolic acids, steroids and their glycosides are the key classes of secondary metabolites reported in P. kurroa. However, recent overexploitation of this plant, owing to its wide range of therapeutic potential places it among the list of the endangered medicinal herbs of the Himalayas. Consequently, this review presents up to date data on conservation, agro-techniques, biotechnology, sustainable harvesting, traditional uses, phytochemistry and pharmacological potential of P. kurroa, an important medicinal herb of the western Himalayas.
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