The Journal of Experimental Medicine, Vol 58, 161-181,
Copyright, 1933, by The Rockefeller Institute for Medical Research New York
STUDIES ON A CERTAIN SPREADING FACTOR EXISTING IN BACTERIA AND ITS SIGNIFICANCE FOR BACTERIAL INVASIVENESS
F. Duran-Reynals M.D.1
1 From the Laboratories of The Rockefeller Institute for Medical Research
Invasive strains of staphylococcus and streptococcus contain a soluble factor which markedly increases tissue permeability and enhances the infections produced by these organisms, by other bacteria, and by vaccine virus as well.
The non-invasive strains of the same species of staphylococci and streptococci do not contain this factor.
The enhancing substance elaborated locally by organisms passes into the circulating blood and bringing about a general increase of tissue permeability may act to enhance local infections elsewhere.
The factor is similar in the phenomena it elicits to the spreading factor extracted from many animal tissues, especially from testicle.
Submitted on March 27, 1933