PHILADELPHIA, Nov. 13, 2022 /PRNewswire/ — After sun exposure, people with systemic lupus erythematosus (SLE) frequently develop skin rashes, which often are accompanied by a flare of their overall disease. This connection between ultraviolet (UV) light and disease flares in lupus is well known , but the way in which UV exposure actually triggers the disease has been poorly understood.
In a new study being presented at ACR Convergence 2022, the annual meeting of the American College of Rheumatology, researchers from Hospital for Special Surgery (HSS) report that they have found an underlying mechanism that explains this association: decreased lymphatic drainage, which contributes to both photosensitivity and an immune response in the lymph nodes. The research also suggests that boosting lymphatic drainage may be an effective treatment for lupus photosensitivity and autoimmunity.
“When people with lupus have a systemic flare of their disease, it can affect any organ that is part of their disease,” says senior author Theresa T. LuMD, PhDwho holds the St. Giles Chair for Research in the HSS Research Institute, is a faculty member in Pediatric Rheumatology and in Rheumatology at HSS and is a professor of microbiology and immunology and of pediatrics at Weill Cornell Medicine. “We wanted to look at why sun exposure at the level of the skin affects internal organs like the kidneys, heart and lungs.”
“This study sheds some light on how sun exposure and UV …