[Characterization of the adhesive activity of cholera vibrions in mammalian red blood cells as an additional test for assessment of their epidemic significance].

The in vitro study of the adhesive properties of V. cholerae eltor and V. cholerae O139 on a model of mammalian red blood cells revealed a correlation of their adhesive properties, the presence of the ctx AB, tcpA genes, and their hemolytic activity when blood group A (II) red blood cells were used. In the latter case, the strains having the characteristics of ctx(+) tcp(+) Hly(-) were ascertained to have a mean adhesive value (MAV) of > 1.5, a red blood cell involvement coefficient (RBCIC) of > 50%, while those with the characteristics of ctx(-) tcp(-) Hly(+) had a MAV of < 1.5 and a RBCIC of < 50%. In terms of the adhesive activity, the cultures with the genotype ctx tcp(+) Hly(+) is a heterogeneous group and may be low (MAV < 1.5) and high (MAV > 1.5) adhesive. According to the data of our studies, their adhesiveness is associated with the region of identification and independent on its object.