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2017 ; 2017
(ä): 5906189
Nephropedia Template TP
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Andrographolide Activates Keap1/Nrf2/ARE/HO-1 Pathway in HT22 Cells and
Suppresses Microglial Activation by A?(42) through Nrf2-Related Inflammatory
Response
#MMPMID28373747
Seo JY
; Pyo E
; An JP
; Kim J
; Sung SH
; Oh WK
Mediators Inflamm
2017[]; 2017
(ä): 5906189
PMID28373747
show ga
Therapeutic approach of Alzheimer's disease (AD) has been gradually diversified.
We examined the therapeutic and preventive potential of andrographolide, which is
a lactone diterpenoid from Andrographis paniculata, and focused on the Kelch-like
ECH-associated protein 1 (Keap1)/nuclear factor (erythroid-derived 2)-like 2
(Nrf2)-mediated heme oxygenase (HO)-1-inducing effects and the inhibitory
activity of amyloid beta (A?)(42)-induced microglial activation related to Nrf2
and nuclear factor ?B (NF-?B)-mediated inflammatory responses. Andrographolide
induced the expression and translocation of Nrf2 from the cytoplasm to the
nucleus, thereby activating antioxidant response element (ARE) gene transcription
and HO-1 expression in murine hippocampal HT22 cells. Andrographolide eliminated
intracellular A?(42) in BV-2 cells and decreased the production of interleukin
(IL)-6, IL-1?, prostaglandin (PG)E(2), and nitric oxide (NO) because of
artificial phagocytic A?(42). It decreased pNF-?B accumulation in the nucleus and
the expression of inducible nitric oxide synthase (i-NOS) and cyclooxygenase II
(COX-II) in the microglial BV-2 cell line. In summary, andrographolide activates
Nrf2-mediated HO-1 expression and inhibits A?(42)-overexpressed microglial BV-2
cell activation. These results suggested that andrographolide might have the
potential for further examination of the therapeutics of AD.