A total of 101 preterm infants between 26 and 37 weeks' gestation who received BCG vaccination at birth were evaluated between two and four months after vaccination. Altogether 32% of these infants had no visible BCG scar. All infants were then tested with tuberculin purified protein derivative (PPD) but only 70 returned for the test to be read 48-72 hours later. The test was negative in 22 (31...

In a preliminary report by Smith, Espir, Whitty, and Russell (1957) it was suggested that the intrathecal administration of purified protein derivative of tuberculin (P.P.D.) might be beneficial to patients with multiple sclerosis. It was also observed that apart from the immediate reaction no patient deteriorated who had experienced a definite response. These workers were unable to find eviden...

The administration of triton WR-1339 (300 mg./kg. subcutaneously) to tuberculin-sensitive guinea pigs 2 hours before the intradermal injection of PPD depresses slightly their skin sensitivity to tuberculin and essentially obliterates the lytic effect of tuberculin on their circulating leucocytes. When leucocytes from tuberculin-sensitive guinea pigs are exposed to triton in vitro at a concentra...

Viable and immunologically competent lymphocytes from unsensitized donors damage allogeneic tissue culture cells in the presence of phytohemagglutinin (PHA). This cytotoxicity is specific since syngeneic tissue culture cells are not at all or only slightly damaged under similar experimental conditions. In this investigation, the relation between the stimulation of human lymphocytes and their cy...

Human lymphocytes stimulated for 16 h and then cultured without stimulant showed maximal activity on days 2-3 following a stimulus of phytohaemagglutinin (PHA) and on days 3-4 following a stimulus of staphylococcal nitrate (SF). At low dosage of stimulant the response of the cells was less marked but persisted for a longer period than at high dosage. The pattern of response is discussed in rela...

OBJECTIVE Recommendations that purified protein derivative (PPD) RT-23 tuberculin should not be kept and used more than 24 to 48 hours after opening are rarely complied with. The aim of this study was to determine whether using PPD RT-23 tuberculin from vials that had been open for a longer time could affect results of tuberculin tests and whether the solution could become contaminated. METHO...

We have found that natural killer (NK) cells were very active in pleural effusions containing Mycobacterium tuberculosis. Cytotoxicity against K562 and Raji was augmented when the mononuclear cells were cocultured for 18 hr with purified protein derivative (PPD) derived from M. tuberculosis culture supernatants. In pleural effusions of cancer patients, PPD-activated mononuclear cells were less ...

Tubersol, a product of Sanofi Pasteur Limited, is in short supply nationwide until at least the end of May 2013. Tubersol is one of two purified-protein derivative (PPD) tuberculin products licensed by the Food and Drug Administration (FDA). The manufacturer has notified CDC that 50-dose vials of Tubersol will remain unavailable until the end of May 2013 and that supplies of 10-dose vials are s...

(14)C-labeled tuberculin purified protein derivative ((14)C-tuberculin PPD) has been prepared from culture filtrates of Mycobacterium tuberculosis var. hominis grown in a culture medium containing uniformly labeled (14)C-amino acids. With a mixture of (14)C-amino acids (an acid hydrolysate of (14)C-Chlorella protein) in the medium, the recoveries of (14)C in the final product were higher than w...

Objective(s): Tuberculosis is one of the most important infectious diseases with high mortality rates worldwide, especially in developing countries. Interleukin17 (IL-17) is an important acquired immunity cytokine, which is mainly produced by CD4+TH17 cells. It can recruit neutrophils and macrophages to the infected site in the lungs. IL-23 is one of the most important inducers of IL-17. In the...