| Autor: |
Takeshi Ikeuchi, Mayuka Kanda, Hitomi Kitamura, Fumiyoshi Morikawa, Shuta Toru, Chika Nishimura, Kensaku Kasuga, Takayoshi Tokutake, Tetsuya Takahashi, Yasuko Kuroha, Nobuhiko Miyazawa, Shin Tanaka, Kumiko Utsumi, Kenjiro Ono, Satoshi Yano, Tadanori Hamano, Satoshi Naruse, Ryuji Yajima, Noriko Kawashima, Chikako Kaneko, Hisatsugu Tachibana, Yuki Yano, Yumiko Kato, Sakino Toue, Hiroko Jinzu, Akihiko Kitamura, Yuri Yokoyama, Eiji Kaneko, Minoru Yamakado, Kenji Nagao |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Frontiers in Nutrition, Vol 9 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2296-861X |
| DOI: |
10.3389/fnut.2022.1040476 |
| Popis: |
BackgroundNutritional epidemiology has shown that inadequate dietary protein intake is associated with poor brain function in the elderly population. The plasma free amino acid (PFAA) profile reflects nutritional status and may have the potential to predict future changes in cognitive function. Here, we report the results of a 2-year interim analysis of a 3-year longitudinal study following mild cognitive impairment (MCI) participants.MethodIn a multicenter prospective cohort design, MCI participants were recruited, and fasting plasma samples were collected. Based on clinical assessment of cognitive function up to 2 years after blood collection, MCI participants were divided into two groups: remained with MCI or reverted to cognitively normal (“MCI-stable,” N = 87) and converted to Alzheimer’s disease (AD) (“AD-convert,” N = 68). The baseline PFAA profile was compared between the two groups. Stratified analysis based on apolipoprotein E ε4 (APOE ε4) allele possession was also conducted.ResultsPlasma concentrations of all nine essential amino acids (EAAs) were lower in the AD-convert group. Among EAAs, three branched-chain amino acids (BCAAs), valine, leucine and isoleucine, and histidine (His) exhibited significant differences even in the logistic regression model adjusted for potential confounding factors such as age, sex, body mass index (BMI), and APOE ε4 possession (p < 0.05). In the stratified analysis, differences in plasma concentrations of these four EAAs were more pronounced in the APOE ε4-negative group.ConclusionThe PFAA profile, especially decreases in BCAAs and His, is associated with development of AD in MCI participants, and the difference was larger in the APOE ε4-negative population, suggesting that the PFAA profile is an independent risk indicator for AD development. Measuring the PFAA profile may have importance in assessing the risk of AD conversion in the MCI population, possibly reflecting nutritional status.Clinical trial registration[https://center6.umin.ac.jp/cgi-open-bin/ctr/ctr_view.cgi?recptno=R000025322], identifier [UMIN000021965]. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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