sAPP total human ELISA

Enzyme immunoassay for the quantitative determination human total sAPP in serum, EDTA plasma, cerebrospinal fluid and cell culture supernatant.

INTENDED USE:This assay kit is capable for the quantitative determination human total sAPP in serum, EDTA plasma, cerebrospinal fluid and cell culture supernatant as a total amount.

GENERAL INFORMATION:Alzheimer's disease (AD) was first reported by A. Alzheimer, a German neuropathologist in 1907 and is considered as a major factor of dementia. It is known that Amyloid β (Aβ; which is major constituent of senile plaque) is cleaved from Amyloid Precursor Protein (APP; which exists in three main isoforms, APP695, APP751, and APP770) by β-secretase and subsequent γ-secretase. The production of soluble APPβ (sAPPβ) by β-secretase cleavage corresponds to Aβ production accordingly, so it is desired to measure sAPPβ in parallel with Aβ. In addition, it is reported that APP gene mutation exists in early-onset familial Alzheimer's disease patient. Swedish mutation, one of the APP gene mutations, is a double mutation at positions -1 to -2 from the β-secretase cleavage site (Lys670→Asn and Met671→Leu). And further, it is reported that Swedish mutation elevates Aβ40 and Aβ42 production (ref. 2), and that the mutation is utilized in establishment of transgenic mice. The measuring sAPPβ in Swedish type is useful for research of AD as well as in wild type. On the one hand, it is considered that in the metabolic pathway of APP, APP is first cleaved by α-secretase rather than β-secretase normally to produce soluble APPα (sAPPα) and subsequently P3 is cleaved from the remaining C-terminal fragment by γ-secretase. In recent research, there are several attempts to apply the inhibitor of β-secretase and the activation of α-secretase for AD treatment. This kit can measure human soluble APP in samples as a total amount including sAPPα and sAPPβ.

KIT CHARACTERISTICS:
- Method: ELISA
- Tests: 96
- Incubation Time / Conditions: 24 h (4°C), 30 (4°C), 30 min (RT)
- Standard Range: 0.39 - 25 ng/ml
- Sensitivity analytical: 0.6 ng/ml
- Final Sample Volume: 100 µl
- Sample Type: serum, plasma (EDTA), CSF, cell culture supernatant
- Isotope / Substrate: TMB 450 nm
- Regulatory Status: RUO