Abstract
Cistanche species, known as Rou Cong-Rong in Chinese, are an endangered wild species and are mainly distributed in the arid lands and warm deserts of northwestern China. Within Traditional Chinese Medicine (TCM), Herba Cistanche is applied as a tonic and/or in a formula for chronic renal disease, impotence, female infertility, morbid leucorrhea, profuse metrorrhagia, and senile constipation. The chemical constituents of Herba Cistanche mainly consist of volatile oils, non-volatile phenylethanoid glycosides (PhGs), iridoids, lignans, alditols, oligosaccharides, and polysaccharides. There have been an increasing number of studies focusing on its bio-activities, including antioxidation, neuroprotection, and antiaging. The objective of this review is to introduce this herb to the world. Its taxonomy, distribution, and corresponding biological functions and molecular mechanisms are addressed in this review.
Highlights
Specialty section: This article was submitted to Ethnopharmacology, a section of the journal Frontiers in Pharmacology
Within Traditional Chinese Medicine (TCM), Herba Cistanche is applied as a tonic and/or in a formula for chronic renal disease, impotence, female infertility, morbid leucorrhea, profuse metrorrhagia, and senile constipation
The other classic example of a modern medicine that originated in TCM is arsenic trioxide, which was approved by the US Food and Drug Administration (FDA) to treat leukemia in 2000
Summary
In essential oil of the Herba Cistanche, alkanes, alcohols, aldehydes, and heterocyclics were detected, and palmitic acid, linoleic acid, 14-methylpentadecanoate, ethyl palmitate, and 2,5,6-trimethyloctane were identified. The total oils of C. tubulosa mainly consist of palmitic acid and linoleic acid, while the essential oil of C. salsa includes alkanes, alcohols, aldehydes, and some heterocyclic compounds (Jiang and Tu, 2009). Among the non-volatile compounds of Herba Cistanche, more than 100 have currently been isolated and identified. These compounds are mostly PhGs, iridoids, lignans, alditols, oligosaccharides, and polysaccharides. For the other non-volatile compounds of Herba Cistanche, 3 iridoid aglycones and 14 iridoid glycosides have currently been isolated from cistanche species (Xie et al, 2006); 1 and 5 lignan
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