Indian medicinal plants and many herbal
formulations belonging to the traditional systems of medicines have been
investigated as liver protective drugs (Jose and Kuttan, 2000). Oroxylum
indicum, Vent. (Syonakh), is an indigenous plant, found in India, Ceylon,
Malaya, Cochin,
China, Philippines and Indonesia. Oroxylum indicum
is used in traditional Ayurvedic medicine to alleviate thirst, rheumatism,
dysentery, anorexia, bronchitis, eruptive fevers and dropsy. It is also regarded
as tonic, aphrodisiac, carminative, bitter and anthelmintic. Roots of Oroxylum
indicum is one of the ingredients of traditional Ayurvedic formulation viz.
Dasamula, Chyavanaprasa, Brahma Rasayana, Dhanawantara Ghrita, Dantyadyarista,
Awalwha and Narayana Taila. It is reported that Oroxylum indicum plant
possesses anti-inflammatory, diuretic, anti-arthritic, antifungal and
antibacterial activity (Warrier et al., 1997). The stem bark of this plant is
reported to contain flavonoids namely, baicalein, chrysin, oroxylin-A,
scutellarin etc (Sankara et al., 1972-a; Sankara et al., 1972-b). Seeds of this
plant are reported to contain ellagic acid (Vasantha et al., 1991). Baicalein
is reported to possess an anti-inflammatory (Tie et al., 2002), anti-ulcer (Kennouf et al., 2003), antioxidant (Ng et al., 2000), hepatoprotective (Niedworok
et al., 1999) and immunomodulatory activity (Lien et al., 2003), while chrysin and baicalein both are
reported to have antibacterial, antifungal and antiviral activity (Tahara et al., 1987; Kujumgier et al., 1999). Furthermore,
biochanin-A possesses anti-fungal action and tumor necrosis factor-α (Knight et
al., 1996). Ellagic acid is an important polyphenolic compound (Jadhav et al.,
2004). As a result of these findings, the present study was undertaken to
evaluate, the effects of different fractions of Oroxylum indicum against
liver damage in experimental animals model and further to establish the
relationship between the hepatoprotective and antioxidant enzyme
activity.