T. Majima et al., POLYSACCHARIDE (ANK-102) FROM POLIANTHES TUBEROSA CELLS DETERIORATES THE RESISTANCE OF MICE TO LISTERIA-MONOCYTOGENES INFECTION, Immunopharmacology and immunotoxicology, 17(1), 1995, pp. 59-68
Modulatory effect on the murine self defense system by a newly discove
red acidic polysaccharide (ANK-102) produced by P. tuberosa cells in l
iquid culture was examined. Pretreatment with ANK-102 deteriorated the
murine survival against lethal infection of Listeria monocytogenes, a
n intracellular gram-positive bacterium eliminated mainly by macrophag
es through T-cell mediated immune response. Pretreatment with ANK-102
resulted in the accumulation of Mac 1 and Mac 2 positive cells in the
peritoneal cavity of the infected animals and the reduction of Thy 1.2
expression on the surface of the thymocytes. A new type of immunosupp
ressive polysaccharide ANK-102 was introduced.