Theses and Dissertations

Issuing Body

Mississippi State University


Pruett, Stephen B.

Committee Member

Pharr, G. Todd

Committee Member

Carr, Russell L.

Date of Degree


Document Type

Graduate Thesis - Open Access


Veterinary Medical Science

Degree Name

Master of Science (M.S.)


College of Veterinary Medicine


Veterinary Medical Science Program


Sodium methyldithiocarbamate (SMD) is commonly reported to cause health risks in humans. Previous reports indicate SMD causes oxidative stress, which can contribute to the activation of NF-êB and cause other characteristics of inflammatory responses to be altered. Almost all pro-inflammatory cytokines require NF-êB activation for full expression and development of an innate immune or inflammatory response. This study evaluated NF-êB activation, providing new information regarding reactive oxygen in macrophages from SMD-treated mice. Studies were conducted in which NF-êB reporter mice were treated with lipopolysaccharide (LPS), SMD, buthionine sulfoximine (BSO), and N-acetyl cysteine (NAC). BSO depletes glutathione (GSH) and increases oxidative stress, whereas NAC spares GSH by acting as a precursor for rapid synthesis to replace oxidized GSH. The work here indicates that NF-êB is not affected directly by increased or decreased reactive oxygen species (ROS), and oxidative stress is not the major mechanism by which SMD inhibits inflammatory responses.