Clinical application of sialic acid (II) Sialic acid contents in cerebro-spinal fluid of patients suffering from the disease of the central nervous system

It is well known that human serum contains some sialic acid and its contents increase markedly in the blood serum of the patients bearing malignant tumors. Recently YAMAKAWA2, BHOM3, SAITO4 and YUI5 observed the sialic acid contents in the blood sera from the patients of various diseases and clarified that its contents increase not only in the sera from the cases bearing malignant tumors but also in those of rheumatic or tuberculous diseases. BOHM6 et al. measured the sialic acid contents in the cerebrospinal fluid of several diseases and ascertained that its contents increase in the cerebrospinal fuid from the cases of inflammatory diseases. In connection with these works we have observed the sialic acid contents in the cerebrospinal fluid of the patients suffering from the diseases of central nervous system, prior to the surgical operation, and revealed the markedly increased contents in the sialic acid in the patients bearing tumors of the nervous system. In this paper the data are reported in detail.