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- 저자 : Khaza’ai Huzwah (검색결과 2 건)
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A review of the neuroprotective effects of andrographolide in Alzheimer's disease
Abedi Zahra,Basri Hamidon,Hassan Zurina,Mat Liyana Najwa Inche,Khaza’ai Huzwah,Mohamad Nur Afiqah 경희대학교 융합한의과학연구소 2021 Oriental Pharmacy and Experimental Medicine Vol.21 No.2
Alzheimer’s disease, characterized by amyloid beta peptides and neurofibrillary tangles, is the most prevalent cause of demen-tia. Nowadays, some novel medicines being developed have displayed more illustrious therapeutic efficacies in Alzheimer’s disease. Recent studies have found andrographolide exhibiting therapeutic efficacy in a variety of Alzheimer’s disease models. Andrographolide is a traditional herbal medicine compound extracted from Andrographis paniculata. Evidence has shown that andrographolide reduces amyloid beta aggregation and suppresses neuroinflammatory response and synaptic dysfunction by reversing the microglia-mediated production of pro-inflammatory cytokines as well as Alzheimer’s disease-associated reduction in synaptic proteins. In the present review, the pharmacological effects of andrographolide are summarized and its mechanism of action against Alzheimer’s disease is discussed to discover the possibilities of andrographolide for Alzhei-mer’s disease prevention and therapy.
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Yeong, Looi Ting,Hamid, Roslida Abdul,Yazan, Latifah Saiful,Khaza'ai, Huzwah Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.4
Ardisia crispa (Family: Myrsinaceae) is an evergreen, fruiting shrub that has been traditionally used as folklore medicine. Despite a scarcity of research publications, we have succeeded in showing suppressive effects on murine skin papillomagenesis. In extension, the present research was aimed at determining the effect of a quinone-rich fraction (QRF) isolated from the same root hexane extract on both initiation and promotion stages of carcinogenesis, at the selected dose of 30 mg/kg. Mice (groups I-IV) were initiated with a single dose of 7,12-dimethylbenz(${\alpha}$)anthracene (DMBA, $100{\mu}g/100{\mu}l$) followed by repeated promotion of croton oil (1%) twice weekly for 20 weeks. In addition, group I (anti-initiation) received QRF 7 days before and after DMBA; group II (anti-promotion) received QRF 30 minutes before each croton oil application; group III (anti-initiation/promotion) was treated with QRF as a combination of group I and II. A further two groups served as vehicle control (group V) and treated control (group VI). As carcinogen control, group IV showed the highest tumor volume ($8.79{\pm}5.44$) and tumor burden ($3.60{\pm}1.17$). Comparatively, group III revealed only 20% of tumor incidence, tumor burden ($3.00{\pm}1.00$) and tumor volume ($2.40{\pm}1.12$), which were significantly different from group IV. Group II also showed significant reduction of tumor volume (3.11), tumor burden (3.00) and tumor incidence (11.11%), along with prominent increase of latency period of tumor formation (week 12). Group I, nonetheless, demonstrated marked increment of tumor incidence by 40% with prompted latency period of tumor formation (week 7). No tumor formation was observed in groups V and VI. This study provided clear evidence of inhibitory effects of QRF during promotion period which was in agreement with our previous findings. The mechanism(s) underlying such effects have yet to be elucidated.
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