Photoperiod alters the choroid plexus response to LPS-induced acute inflammation in EWES

This study determined the influence of photoperiod on the expression of toll-like receptor 2 and 4 ( and ), interleukin 1□ ( ), IL-1 receptor type I ( ) and II ( ), interleukin 6 ( ), the IL-6 receptor ( ) and signal transducer ( ), tumor necrosis factor α ( ), and TNF□ receptor type I ( ) and II ( ) in the choroid plexus (ChP) of ewes with lipopolysaccharide (LPS)-induced acute inflammation. Under short-days (SD, n = 12, anestrous) and long-days (LD, n = 12, synchronized follicular phase), ewes were treated with saline or LPS. Compared to LD conditions, the ewes under SD were characterized by a greater (P