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Aikawa, Tomonori; Ren, Yingxue; Yamazaki, Yu; Tachibana, Masaya; Johnson, Madeleine R.; Anderson, Casey T.; Martens, Yuka A.; Holm, Marie-Louise; Asmann, Yan W.; Saito, Takashi; Saido, Takaomi C.; Fitzgerald, Michael L.; Bu, Guojun; Kanekiyo, Takahisa
Proceedings of the National Academy of Sciences - PNAS, 11/2019, Letnik: 116, Številka: 47Journal Article
Carrying premature termination codons in 1 allele of the ABCA7 gene is associated with an increased risk for Alzheimer’s disease (AD). While the primary function of ABCA7 is to regulate the transport of phospholipids and cholesterol, ABCA7 is also involved in maintaining homeostasis of the immune system. Since inflammatory pathways causatively or consequently participate in AD pathogenesis, we studied the effects of Abca7 haplodeficiency in mice on brain immune responses under acute and chronic conditions. When acute inflammation was induced through peripheral lipopolysaccharide injection in control or heterozygous Abca7 knockout mice, partial ABCA7 deficiency diminished proinflammatory responses by impairing CD14 expression in the brain. On breeding to AppNL-G-F knockin mice, we observed increased amyloid-β (Aβ) accumulation and abnormal endosomal morphology in microglia. Taken together, our results demonstrate that ABCA7 loss of function may contribute to AD pathogenesis by altering proper microglial responses to acute inflammatory challenges and during the development of amyloid pathology, providing insight into disease mechanisms and possible treatment strategies.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Vir: Osebne bibliografije
in: SICRIS
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