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Biomedical subjects

S Wood

Publications and source records attributed to S Wood.

At least 289 records · Page 16Linked to original sources

A long-term study and correlation of lymphocyte and neutrophil function in the patient with burns.

Twenty-five patients were studied to determine the effects of thermal injury on neutrophil bactericidal function and superoxide release and on lymphocyte proliferation. Neutrophils in patients with burns had depressed killing of Staphylococcus aureus for more than 150 days after burn injury, but killing of Escherichia coli returned to normal. FMLP-stimulated superoxide release by neutrophils in patients with burns was depressed for over 100 days after burn injury, whereas superoxide release by neutrophils in patients with burns stimulated with serum-opsonized zymosan was depressed for 42 days after burn injury. In patients with burns lymphocyte proliferation, with phytohemagglutinin as a mitogen, was suppressed for up to 85 days after injury, then returned to normal. The mixed lymphocyte response was suppressed up to 170 days after injury.

Adolescent↗

The increased release of prostaglandin E2 by Kupffer cells from burned guinea pigs.

Prostaglandin E2 (PGE2) is a very important immunosuppressive substance that is synthesized and released by all macrophages including Kupffer cells (KCs). In this study the changes of PGE2 released by KCs were evaluated in a burned guinea pig model. Prostaglandin E2 was released by KCs from burned guinea pigs at a consistently and significantly high level when stimulated with endotoxin. On postburn day 8, KCs that were cocultured with hepatocytes released significantly less PGE2. There was also a significant decrease in antibody-dependent cell-mediated cytotoxicity on postburn day 1. Kupffer cells can mediate immune suppression in burn injury by a prolonged increased production of PGE2 that has immunosuppressive effects on other cells and by a decreased cytotoxic effect soon after burn injury.

Animals↗