Publication Date:
2018-06-29
Description:
Cycloartane-triterpenes (cycloartenol, 3α-cycloartenol-26-oic acid and 3β-cycloartenol-26-oic acid) together with α-amyrin acetate
and flavonoids (pinostrobin, tectochrysin and chrysin) were isolated from Egyptian propolis for the first time. Their antioxidant
activity was evaluated with DPPH and superoxide anion radical (O2.-). All compounds possessed both (O2.-) scavenging as well as XOD
inhibitory activity in the range of 50 – 75 %. With DPPH, only the flavonoids showed scavenging activity (48 – 83 %).
Acetylcholinesterase (AChE) and phosphodiesterase type 4 (PDE4) inhibitors are currently considered as intracellular targets for treatment of Alzheimer’s disease and Chronic obstructive pulmonary disease (COPD). 3β-cycloartenol-26-oic acid moderately
inhibited AChE and PDE4 activities in vitro with IC50 values of 0.8±0.2 and 1.9±0.4 μM, respectively, while 3-cycloartenol-26-oic acid
inhibited AChE activity with an IC50 value of 2.1±0.1 μM. The flavonoids pinostrobin and chrysin reduced PDE4 activity by 43 and 40
%, respectively (10 μM) as well as moderately inhibited the growth of the HepG2 cell line, whereas chrysin reduced proliferation of
NIH-3T3 cells at 50 μM. Therefore, our results with 3β- and 3-cycloartenol-26-oic acids can contribute to further research on alternative drugs for the treatment of neurological and neurodegenerative diseases, as well as asthma and COPD.
Type:
Article
,
PeerReviewed
Format:
text
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