Volume 41 Issue 4
Jul.  2020
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Zhen-Hui Li, Xia-Ping He, Hao Li, Rong-Qiao He, Xin-Tian Hu. Age-associated changes in amyloid-β and formaldehyde concentrations in cerebrospinal fluid of rhesus monkeys. Zoological Research, 2020, 41(4): 444-448. doi: 10.24272/j.issn.2095-8137.2020.088
Citation: Zhen-Hui Li, Xia-Ping He, Hao Li, Rong-Qiao He, Xin-Tian Hu. Age-associated changes in amyloid-β and formaldehyde concentrations in cerebrospinal fluid of rhesus monkeys. Zoological Research, 2020, 41(4): 444-448. doi: 10.24272/j.issn.2095-8137.2020.088

Age-associated changes in amyloid-β and formaldehyde concentrations in cerebrospinal fluid of rhesus monkeys

doi: 10.24272/j.issn.2095-8137.2020.088
#Authors contributed equally to this work
Funds:  This study was supported by the National Key R&D Program of China (2018YFA0801403), Key Realm R&D Program of GuangDong Province (2019B030335001), the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB32060200), the National Natural Science Foundation of China (81941014, 81471312, 81771387, 81460352, 81500983, 31700897, 31700910, 31800901, 31960178, 91732302), the Applied Basic Research Programs of Science and Technology Commission Foundation of Yunnan Province (2017FB109, 2018FB052, 2018FB053, 2019FA007), China Postdoctoral Science Foundation (2018M631105) and CAS “Light of West China” Program
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  • Rhesus monkeys (Macaca mulatta) are valuable experimental animals for studies on neurodegenerative diseases due to their evolutionarily close relationship to humans (

    ). Rhesus monkeys also display similar hallmarks of aging and neurodegeneration as humans, including formation of senile plaques in the brain (


    ). However, changes in formaldehyde (FA) levels in the cerebrospinal fluid (CSF) of rhesus monkeys with aging have not been reported. Additionally, whether changes in CSF FA are correlated with changes in amyloid-β (Aβ) concentrations have not yet been explored. Here, the CSF levels of Aβ40, Aβ42, and FA were measured in 56 rhesus monkeys of different ages, ranging from 4 to 26 years old. Results revealed significant declines in Aβ40 and Aβ42, and an increase in FA with age. Interestingly, the increase in FA levels was negatively correlated with Aβ40 and Aβ42 concentrations in aged rhesus monkeys but not in young and middle-aged monkeys. These results appear to parallel changes seen within human aging, i.e., decreased levels of CSF Aβ and increased levels of FA in normal aged adults and Alzheimer’s disease (AD) patients. These findings further indicate that rhesus monkeys are a reliable model for studying age-related neurological disorders such as AD and suggest that FA is an important factor in AD development and may be used as a diagnostic indicator of such disease.

  • #Authors contributed equally to this work
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