Evaluation of cerebrospinal fluid (CSF) C-reactive protein in the diagnosis of suspected meningitis.

Cerebrospinal fluid C-reactive protein (CSF-CRP) was studied in 183 consecutive infants and children with suspected meningitis, using a nephelometric technique. Cerebrospinal fluid C-reactive protein was above an empirically chosen level of 1 mg/1 in seven of 19 children with culture-proven bacterial meningitis, in only one of 15 children with viral meningitis, and three of 139 children with no meningitis. All 10 children with partially treated meningitis had CSF-CRP levels below 1 mg/1.

Short-term tissue culture of two nonsecretory human myelomas. A morphological and functional study.

Bone marrow cells from two patients without detectable monoclonal immunoglobulin (Ig) in serum and urine but with the clinical picture of plasma cell myeloma were cultivated in vitro. Immunofluorescence studies of cultured living and fixed bone marrow cells showed no signs of Ig production in one of the cases, whereas in the other case cytoplasmic kappa chains were detected, which, however, were not expressed at the surface of living cells. Cells from the later patient were also subjected to kinetic, ultrastructural, and functional studies in vitro.

Effect of trimethoprim-sulfamethoxazole on the renal excretion of creatinine in man.

Treatment with the chemotherapeutic combination of 160 mg. trimethoprim plus 800 mg. sulfamethoxazole twice daily increased the serum creatinine level by an average of 2 mg.

Low-molecular-weight proteins related to Bence Jones proteins in multiple myeloma.

Urinary proteins distinct from Bence Jones proteins, but sharing antigenic determinants, were found in the urine of a number of patients with multiple myeloma. These components were smaller in size and antigenically deficient compared with Bence Jones proteins. They were best detected with antiserums to the homologous Bence Jones proteins and, in some cases, were related to the variable portion of the Bence Jones protein molecule.