Enzymatic properties of neuraminidase from corynebacterium diptherial

Enzymatic properties of neuraminidase isolated from non-toxigenic strain C7 of diphteritic bacteria are studied. The enzyme has the pH optimum 5.5--6.0 in acetate buffer and the temperature optimum 38 degrees C. Neuraminidase has the highest substrate affinity to glycoproteins of equine blood serum, the lowest affinity--to 3-N-acetylneuraminosyllactose and ovomucin. The Km values was 4.3-10(-4) at optimal conditions under the hydrolysis of 3-N-acetylneuraminosyllactose, Vm was 0.05+/-0.02 muM NANA/hour/mg of protein. The following esters of N-glyconoyl-glycine were shown to be competitive inhibitors of neuraminidase: 1) methyl ester of 3-aza-4-oxo-2,3,4-trideoxy-D-arabinooctonic acid; 2) methyl ester of 3-aza-4-oxo-2,3,4-trideoxy-D-glucoheptodecanic acid; 3) methyl ester of 3-aza-4-oxo-2,3,4-trideoxy-D-galactonic acid; 4) methyl ester of 3-aza-4-oxo-2,3,4-trideoxy-D-gluconic acid, Ki values being 6.5-10(-4), 4.5-10(-4); 9.5-10(-4) and 7.1-(10-3) M, respectively.     

Plastic repair of the urinary bladder

Clinical observations of 76 patients in whom an artifical urinary bladder was constructed from the rectum are presented. 52 patients were operated upon for cancer of the urinary bladder, total papillomatosis, a metastasis of uterine cancer in the bladder, cancer of the sigmoid with the urinary bladder involvement, sarcoma and cancer of the prostate with the bladder involvement. 17 patients were operated upon for extrophy, 7 -- for cancer of the urethra. An isolation of the rectum is followed by ligation of the upper rectal and vein. Fifteen patients died postoperatively due to peritonitis (6), ascending infection of the urinary tract (4), postoperative shock (I), phlegmon of the minor pelvis (I). In late postoperative period an artificial urinary bladder provides for reservoir and excretory functions.     

Hemosorption and transfusion therapy in diffuse peritonitis

A combination of the transfusion therapy and hemosorption for the treatment of patients with diffuse peritonitis was followed by a considerable improvement of the general state of the patients and a pronounced regression of peritoneal symptoms. The complex therapy in addition to the desintoxication effect was found to result in an improvement of rheological properties of blood which opens new prospects in the treatment of patients with peritonitis.     

Immunochemical identification of a new embryonal antigen in ovarian tumor tissue

The peripheral blood smears of 214 thermally injured patients studied during a thirty month period revealed a 20% incidence of normoblastemia (51 patients). Nucleated red blood cells were most common in patients with the largest burns. The absolute number of normoblasts was not related to the hematocrit and was not correlated with other determinants of erythropoietic function.