[Erythrocyte sedimentation rate and serum immunoglobulins in rheumatic pelvispondylitis].

Blood sedimentation rate and balanced titration of immunoglobulins were studied in 59 patients presenting a ankylosing pelvispondylitis: in 30 of them, these examinations were repeated at an interval of 3-6 months. The sedimentation rate (Sed. rate) and the level of immunoglobulins G and A increased in the course of the disease, but an elective increase of the level of immunoglobulins A was not demonstrated. Neither the Sed. rate, nor the level of IgA are correlated to evolution criteria of the disease; a positive correlation is only found with the platelets number, in a vertical study of 59 patients. Nevertheless, the variations of the immunoglobulins A is positively correlated with alterations of the clinical condition as demonstrated in the longitudinal study carried out in 30 patients. This finding supports physiopathological hypothesis which incriminates microbial intestinal infections at the origin of evolutive bouts of ankylosing pelvispondylitis.