Systemic lupus erythematosus , the archetypal multisystem autoimmune disease, presents many diagnostic and management challenges. One such challenge is the excess cardiovascular disease observed in patients with Systemic lupus erythematosus . Coronary heart disease and other manifestations of atherosclerosis continue to be a major cause of death in patients with Systemic lupus erythematosus.Regulatory B-cells have been identified as a negative regulator of the immune system that inhibit pathological immune response by suppressing both uncontrolled protective immune response and damaging autoimmune responses

Regulatory B cells have been identified as an IL10 producing B cells subsets that are characterized by the expression of CD19 CD24hiCD38hi . Breg cells can inhibit inflammatory responses in autoimmune disease, like Systemic lupus erythematosus, via the production of IL-10 (an antiatherogenic cytokine) which will suppress TNF- α production by monocytes leading to inhibition of T cell-mediated inflammation. Regulatory B have a vital role in immune tolerance and their deficiency resulted in exacerbation of autoimmunity . Evidence suggests Breg in autoimmune disease may be dysfunctional .

In this proposal, We suggest IL-10 production by Breg confers an atheroprotective role. In Systemic lupus erythematosus, Regulatory B ability to control atherosclerosis is reduced therefore, we will test the hypothesis that Regulatory B play an important role in both autoimmunity and accelerated atherosclerosis and dysfunction in Regulatory B from autoimmune disease may or may not result in a reduced ability to control atherosclerosis .

Inclusion Criteria:

• Clinical and laboratory Diagnosis of Systemic Lupus disease.
• Must be adult.

Exclusion Criteria:

• Patients with clinical atherosclerotic vascular disease
• pregnancy.

adult patients with systemic lupus erythematosus