NDLI: Neuroprotective Potential of Novel Multi-Targeted Isoalloxazine Derivatives in Rodent Models of Alzheimer’s Disease Through Activation of Canonical Wnt/β-Catenin Signalling Pathway

Content Provider	Springer Nature Link
Author	Machhi, Jatin Sinha, Anshuman Patel, Pratik Kanhed, Ashish M. Upadhyay, Pragnesh Tripathi, Ashutosh Parikh, Zalak S. Chruvattil, Ragitha Pillai, Prakash P. Gupta, Sarita Patel, Kirti Giridhar, Rajani Yadav, Mange Ram
Copyright Year	2016
Abstract	Previous reports suggest that Alzheimer’s disease is protected by cholinesterase inhibitors. We synthesized some isoalloxazine derivatives and evaluated them using in vitro cholinesterase inhibition assay. Two of the compounds (7m and 7q) were figured out as potent cholinesterase inhibitors. They further showed anti-Aβ aggregatory activity in the in vitro assay. The current study deals with the evaluation of neuroprotective potentials of the potent compounds (7m and 7q) using different in vitro and in vivo experiments. The compounds were first assessed for their tendency to cross blood–brain barrier using in vitro permeation assay. They were evaluated using scopolamine-induced amnesic mice model. Additionally, ROS scavenging and anti-apoptotic properties of 7m and 7q were established against Aβ$_{1–42}$-induced toxicity in rat hippocampal neuronal cells. 7m and 7q were also evaluated using Aβ$_{1–42}$-induced Alzheimer’s rat model. Lastly, their involvement in Wnt/β-catenin pathway was also demonstrated. The results indicated good CNS penetration for 7m and 7q. The neuroprotective effects of 7m and 7q were evidenced by improved cognitive ability in both scopolamine and Aβ$_{1–42}$-induced Alzheimer’s-like condition in rodents. The in vivo results also confirmed their anti-cholinesterase and anti-oxidant potential. Immunoblot results showed that treatment with 7m and 7q decreased Aβ$_{1–42}$, p-tau, cleaved caspase-3, and cleaved PARP levels in Aβ$_{1–42}$-induced Alzheimer’s rat brain. Additionally, immunoblot results demonstrated that 7m and 7q activated the Wnt/β-catenin pathway as evidenced by increased p-GSK-3, β-catenin, and neuroD1 levels in Aβ$_{1–42}$-induced Alzheimer’s rat brain. These findings have shown that isoalloxazine derivatives (7m and 7q) could be the potential leads for developing effective drugs for the treatment of AD.
Starting Page	495
Ending Page	513
Page Count	19
File Format	PDF
ISSN	10298428
Journal	Neurotoxicity Research
Volume Number	29
Issue Number	4
e-ISSN	14763524
Language	English
Publisher	Springer US
Publisher Date	2016-01-21
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Alzheimer’s disease Isoalloxazine Aβ$_{1–42}$ p-GSK-3 Wnt pathway Neurosciences Neurology Neurochemistry Pharmacology/Toxicology Neurobiology Cell Biology
Content Type	Text
Resource Type	Article
Subject	Neuroscience Toxicology

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