Hematologic and immunologic studies of humans exposed to SO/sub 2/

Technical Report · Mon Jun 01 04:00:00 EDT 1981

OSTI ID:5672168

Peterson, M L; Harder, S; Elliott, D; Milholland, V; Orlando, G

Immunologic and hematologic parameters were used to evaluate the effects in humans of a single 2 hour exposure to either clean air or 0.75 ppm SO2. Venous blood samples were obtained before, immediately after, and 24, 48, and 72 hours following the end of exposure. Parameters studied included complete blood counts, enumeration of lymphocyte populations using surface membrane receptor markers, evaluation of lymphocyte mitogen stimulated response, and concentration of secretary immunoglobulin A (s-IgA) content of nasal washings. No statistically significant changes were seen in s-IgA, blood erythrocytes or immunologic parameters examined. A possibly significant decrease was found in monocytes 48 hours following SO2 exposure, but this recovered after 72 hours. A stimulatory effect (not statistically significant) was noted at 48 and 72 hours post-SO2 in s-IgA and in lymphocyte numbers bearing receptors for the Fc portion of IgG, while a decrease occurred in active T-lymphocytes with receptors for sheep red blood cells.

• Research Organization: Health Effects Research Lab., Research Triangle Park, NC (USA)
• OSTI ID: 5672168
• Report Number(s): PB-81-213381
• Country of Publication: United States
• Language: English

Related Subjects

560306* -- Chemicals Metabolism & Toxicology-- Man-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ACUTE EXPOSURE
AIR POLLUTION
ANIMAL CELLS
ANIMALS
BIOLOGICAL MATERIALS
BLOOD
BLOOD CELLS
BODY FLUIDS
CHALCOGENIDES
CONNECTIVE TISSUE CELLS
EVALUATION
HEMATOLOGY
IMMUNOLOGY
LEUKOCYTES
LYMPHOCYTES
MAMMALS
MAN
MATERIALS
MEDICINE
OXIDES
OXYGEN COMPOUNDS
POLLUTION
PRIMATES
SOMATIC CELLS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TOXICITY
VERTEBRATES