If a previously healthy individual develops a novel autoimmune disorder targeting pancreatic beta cells following a viral infection, which mechanism explains this phenomenon?

💡 Explanation

Molecular mimicry explains this phenomenon because viral antigens resemble beta cell antigens, causing T cells activated against the virus to also attack beta cells. Therefore, autoimmunity arises rather than normal immune tolerance because of this cross-reactivity.

• Why does lower interstitial fluid pressure increase the risk of peripheral edema in patients with lymphatic filariasis?
• Why does prolonged occlusion of sebaceous follicles, as with a non-porous bandage, increase the risk of Cutibacterium acnes proliferation?
• Why does small intestinal bacterial overgrowth (SIBO) sometimes lead to deficiencies in fat-soluble vitamins after gastric bypass surgery?
• If a patient has a mutation that disables thromboxane production in platelets, which consequence follows during vascular injury?
• Why does chronic graft-versus-host disease (cGVHD) often involve persistent inflammation and fibrosis after donor lymphocyte infusion?
• Why does an elderly patient undergoing hip replacement with pre-existing sarcopenia often experience impaired post-operative muscle recovery?