Amyloid (1 11)

Anionic interaction of Beta-amyloid (1-11) with Factor XII is suspected to cause massive activation of the C4 (complement 4) system in the cerebrospinal fluid of Alzheimer's disease patients.

β-amyloid 1-11 acetate(190436-05-6 free base) 是 Amyloid-β 肽的片段，可用于神经系统疾病的研究。

Umibecestat 是一种β-位点淀粉样前体蛋白裂解酶-1 (BACE-1) 抑制剂，对人 BACE-1 和小鼠 BACE-1 的 IC50 分别为 11 nM 和 10 nM，可用于阿尔茨海默病的研究。

Amyloid-β (1-42) (Aβ42) is a neurotoxic 42-amino acid protein fragment found in amyloid plaques in postmortem cerebral cortex from patients with Alzheimer's disease.1,2,3Aggregation of Aβ42 results in the formation of neurotoxic fibrils or globular oligomers.1Aβ42 accumulates in the brain of many transgenic mouse models of Alzheimer's disease and, in many models, the onset of amyloid deposition positively correlates with deficits in spatial learning and memory.4 1.Wolfe, M.S.Therapeutic strategies for Alzheimer's diseaseNat. Rev. Drug Discov.1(11)859-866(2002) 2.Iwatsubo, T., Odaka, A., Suzuki, N., et al.Visualization of Aβ42(43) and Aβ40 in senile plaques with end-specific Aβ monoclonals: Evidence that an initially deposited species is Aβ42(43)Neuron13(1)45-53(1994) 3.Hardy, J.A., and Higgins, G.A.Alzheimer's disease: The amyloid cascade hypothesisScience256(5054)184-185(1992) 4.Jankowsky, J.L., and Zheng, H.Practical considerations for choosing a mouse model of Alzheimer's diseaseMol. Neurodegener.12(1)89(2017)

Amyloid-β (25-35) (Aβ (25-35)) is an 11-residue fragment of the Aβ protein that retains the physical and biological characteristics of the full length peptide. It forms fibrils that react to thioflavin T and Congo red and are organized in a cross-β arrangement of β-strands similar to Aβ (1-40) and Aβ (1-42) fibrils. Aggregated Aβ (25-35) decreases the viability of rat adrenal PC12 cells. It also decreases the viability of primary rat cortical neurons at concentrations ranging from 1 nM to 30 μM. In vivo, intracerebral injection of Aβ (25-35) (20 nmol) in rats induces lesions of neuronal and tissue loss. Aggregated Aβ (25-35) administered intracerebroventricularly to rats induces learning and memory impairments in the Y-maze, novel object recognition, and contextual fear conditioning tests.

(Pyr11)-Amyloid β-Protein (11-40) (A beta 11pE-40) 作为一种肽， 主要应用于阿尔茨海默病相关研究。