Does downregulation of RCAS1 and upregulation of cytotoxic T cells affect synovial proliferation and apoptosis in rheumatoid arthritis?
In RA, the lack of RCAS1 is thought to induce CTL infiltration through loss of the ability to evade immune attack, thus leading to apoptosis of the synovial lining cells. In addition, Treg cells may play a role in the downregulation of activated T cells.
Pre-psychotic cannabis abuse is associated with decision-making impairment, but not working memory and executive function impairment, among first-episode patients with a schizophrenia-spectrum psychosis. Further studies are needed to examine the direction of causality of this impairment; that is, does the impairment make the patients abuse cannabis, or does cannabis abuse cause the impairment?