Amyloid Beta-Peptide (1-40) (human)

CODE:  331-10107

Molecule Information

CAS Number
Molecular Weight


43.28mg/mL in DMSO

Physical Appearance

A solid


Desiccate at -20°C

Biological Activity

Description Aβ40 is a peptide processed from the amyloid precursor protein (APP).


Cell experiment: [1]

Cell lines

CA1 pyramidal cells

Preparation method

The solubility of this peptide in sterile water is >10 mM. Stock solution should be splited and stored at -80°C for several months.

Reaction Conditions

200 nM, 20 min


Aβ (1-40) reversibly increased IBa evoked at +20 mV. This increase was observed for 6 of 11 cells and reached 1.74±0.06. The activation curve showed that Aβ (1-40) caused an apparent voltage-dependent increase in IBa, with an enhancement of IBa at the test potentials between 0 and +30 mV.

Animal experiment: [2]

Animal models

Male Charles River Wistar rats

Dosage form

Intraperitoneal injection, 400 mg/kg


A statistically significant decrease in basal ACh release (-30%) was detected one week after the injection of Aβ (1-40). 30 days after the Aβ (1-40) peptide injection, the decrease in Ach release was still statistically significant (-38%). K+-stimulated ACh release was similarly affected by the treatment. Aβ (1-40) treatment induced a significant decrease in the stimulated release on day 14 after lesioning (-43%).

Other notes

Please test the solubility of all compounds indoor, and the actual solubility may slightly differ with the theoretical value. This is caused by an experimental system error and it is normal.


[1] Rovira C, Arbez N, Mariani J. Aβ (25-35) and Aβ (1-40) act on different calcium channels in CA1 hippocampal neurons. Biochemical and biophysical research communications, 2002, 296(5): 1317-1321.

[2] Giovannelli L, Casamenti F, Scali C, et al. Differential effects of amyloid peptides β-(1-40) and β-(25-35) injections into the rat nucleus basalis. Neuroscience, 1995, 66(4): 781-792.