Clinical , Epidemiological and Parasitological Features of the Trichinella strain ( ATS )

The problems of the taxonomic individuality of natural arctic Trichinella strain (ATS) attacks (in connection with the phenomena of the clinical epidemiological peculiarities of trichinosis in humans produced by this strain) have been studied (Ozeretskovskaya and Uspenskiy 1957; Ozeretskovskaya 1956, 1968). Further, there has been established a sharp destruction of the process of encapsulation in muscle of larvae in humans and their massive kill in the course of the first months of invasion (Ozeretskovskaya et al. (1966). The experimental study of ATS from the polar bear (Thalarctos miaritiwmus) on Franz Josef Land showed a stable, low invasibility of ATS for laboratory rodents and higher sensitivity to specific chemicals in comparison with the laboratory strain of Trichinella (LST), obtained by prolonged passage of synanthropic (pig) strains of Trichinella in laboratory rodents. The method of disc electrophoresis in polyacrylamide gel also established that there were peculiarities of protein content of ATS larvae and protein shifts in blood serum caused by strains invasive for laboratory animals in comparison with LST and certain other strains of Trichinella (Ozeretskovskaya et al. 1969a, 1970).