Fahad Ali and Yasir Siddique* Pages 1 - 14 ( 14 )
Luteolin is a naturally occurring, yellow crystalline flavonoid found in numerous dietary supplements we frequently have in our meals. Studies in last 2 decades have revealed its therapeutic potential to reduce the Alzheimer’s disease (AD) symptoms in various in vitro and in vivo studies. The anti-Alzheimer’s potential of luteolin is attributed to its ability to suppress Aβ as well as tau aggregation or promote their disaggregation, down-regulate the expression of COX-2, NOS, MMP-9, TNF-α, interleukins and chemokines, reduce oxidative stress by scavenging ROS, modulate the activities of transcription factors CREB, cJun, Nrf-1, NF-κB, p38, p53, AP-1 and β-catenine and inhibiting the activities of various protein kinases. In several systems luteolin has been described as potent antioxidant and anti-inflammatory agent. In addition we have also discussed about the bio-availability of the luteolin in the plasma. After being metabolized luteolin persists in plasma as glucuronides and sulphate-conjugates. Human clinical trials indicated no dose limiting toxicity when administered at a dose of 100 mg/day. Improvements in the formulations and drug delivery systems may further enhance the bioavailability and potency of luteolin. The current review describes in detail the data supporting these studies.
Luteolin, Alzheimer’s disease, oxidative stress, bioavailability.
Drosophila Transgenics Laboratory, Department Of Zoology, Aligarh Muslim University, Drosophila Transgenics Laboratory, Department Of Zoology, Aligarh Muslim University