“Do Hypoallergenic Cats Exist? Determination of Major Cat Allergen Fel D 1 Production in Normal and Hypoallergenic Cat Breeds”, 2014-03-17 (; backlinks):
The aim of our study was to examine the hypoallergenicity of these cats, taking the major allergen Fel d 1 as a marker molecule.
…We collected samples from 6 normal and 8 hypoallergenic cats by stroking with absorbent cotton over the face, chest and saliva.
…Total Fel d 1 levels were reduced in samples from the face and even more in those from the chest of hypoallergenic cats. IgE binding of human patients sera with cat samples showed that only under non-reducing conditions signals were detectable at 18 and 35kDa. Additionally, samples of normal cats showed stronger IgE binding than hypoallergenic cat samples. The monoclonal anti-Fel d 11 antibody showed stronger binding and detected two bands at 18 and 35kDa in normal cats. In contrast less intensive and only a single Fel d 11 band was detected at 18kDa in the samples from hypoallergenic cats.
…Based on our data we conclude that hypoallergenic cats secrete and distribute less Fel d 1 as compared to normal cats to their fur coat.