Aβ peptide vaccination prevents memory loss in an animal model of Alzheimer's disease

Nature ◽  
2000 ◽  
Vol 408 (6815) ◽  
pp. 982-985 ◽  
Author(s):  
Dave Morgan ◽  
David M. Diamond ◽  
Paul E. Gottschall ◽  
Kenneth E. Ugen ◽  
Chad Dickey ◽  
...  
Nature ◽  
2001 ◽  
Vol 412 (6847) ◽  
pp. 660-660 ◽  
Author(s):  
Dave Morgan ◽  
David M. Diamond ◽  
Paul E. Gottschall ◽  
Kenneth E. Ugen ◽  
Chad Dickey ◽  
...  

Author(s):  
Khan A ◽  
Kamal R ◽  
Dhawan Dk ◽  
Vijayta Dani Chadha

Objective: The present study was undertaken to study the therapeutic effects of low dose fractionated cranial X-irradiation on reducing the amyloid-beta (Aβ) induced oxidative stress burden in an animal model of Alzheimer’s disease (AD).Methods: S.D. female rats received an intracerebroventricular injection of Aβ peptide at stereotaxically defined points. Experimental sessions were conducted by randomly dividing animals into four groups, namely sham-operated, Aβ-injected, and Aβ injection followed by cranial X-irradiation and only cranial X-irradiated. Anesthetized animals received 5 μl synthetic Aβ peptide injection with a 10 μl Hamilton microsyringe with the needle kept in place for a period of 2min following injection. Sham-operated group received 5 μl of bidistilled water instead of Aβ peptide. Animals were treated 6 weeks post-surgery with fractionated radiation of 2Gy for 5 days. Neurobehavior studies were undertaken to confirm memory impairment along with biochemical indices involved in the antioxidant defense system.Results: Fractionated cranial X-irradiation proved effective in restoration of activity of enzymes involved in the antioxidant defense system; the lipid peroxidation and catalase levels that showed a significant increase in Aβ-treated group decreased on subsequent X-irradiation. Moreover, the decrease in the superoxide dismutase, glutathione, glutathione-S-transferase, and glutathione reductase levels witnessed an increase post-irradiation, implicating the X-irradiation to be an effective intervention to restore the redox status of the oxidatively stressed brain cells in AD condition.Conclusion: The present study evaluated the therapeutic potential of low dose fractionated cranial X- irradiation by mitigating the amyloid-induced oxidative stress suggesting a novel treatment for AD-associated pathologies.


Author(s):  
Khan A ◽  
Kamal R ◽  
Dhawan Dk ◽  
Vijayta Dani Chadha

Objective: The present study was undertaken to study the therapeutic effects of low dose fractionated cranial X-irradiation on reducing the amyloid-beta (Aβ) induced oxidative stress burden in an animal model of Alzheimer’s disease (AD).Methods: S.D. female rats received an intracerebroventricular injection of Aβ peptide at stereotaxically defined points. Experimental sessions were conducted by randomly dividing animals into four groups, namely sham-operated, Aβ-injected, and Aβ injection followed by cranial X-irradiation and only cranial X-irradiated. Anesthetized animals received 5 μl synthetic Aβ peptide injection with a 10 μl Hamilton microsyringe with the needle kept in place for a period of 2min following injection. Sham-operated group received 5 μl of bidistilled water instead of Aβ peptide. Animals were treated 6 weeks post-surgery with fractionated radiation of 2Gy for 5 days. Neurobehavior studies were undertaken to confirm memory impairment along with biochemical indices involved in the antioxidant defense system.Results: Fractionated cranial X-irradiation proved effective in restoration of activity of enzymes involved in the antioxidant defense system; the lipid peroxidation and catalase levels that showed a significant increase in Aβ-treated group decreased on subsequent X-irradiation. Moreover, the decrease in the superoxide dismutase, glutathione, glutathione-S-transferase, and glutathione reductase levels witnessed an increase post-irradiation, implicating the X-irradiation to be an effective intervention to restore the redox status of the oxidatively stressed brain cells in AD condition.Conclusion: The present study evaluated the therapeutic potential of low dose fractionated cranial X- irradiation by mitigating the amyloid-induced oxidative stress suggesting a novel treatment for AD-associated pathologies.


2013 ◽  
Vol 10 (3) ◽  
pp. 252-260 ◽  
Author(s):  
Jae K Ryu ◽  
Jonathan P Little ◽  
Andis Klegeris ◽  
Nattinee Jantaratnotai ◽  
James G McLarnon

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