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Typical schistocytes are annotated. A schistocyte (from Greek schistos for "divided" and kytos for "hollow" or "cell") is a fragmented part of a red blood cell . Schistocytes are sometimes referred to as helmet cells because of their irregular shape from mechanical force.
Schistocytes or helmet cells . Diagnosis. Microangiopathic hemolytic anemia results in isolated increase in serum bilirubin levels. Unconjugated hyperbilirubinemia ...
Acanthocytes, from peripheral blood, under light microscopy. Note the irregularly shaped, non-circular cells in the image. Acanthocyte (from the Greek word ἄκανθα acantha, meaning 'thorn'), in biology and medicine, refers to an abnormal form of red blood cell that has a spiked cell membrane, due to thorny projections.
In some cases, a peripheral blood smear may show schistocytes, anisocytosis, polychromasia, or poikilocytosis. [7] Direct antiglobulin testing is the only way to confirm DIIHA. Direct antiglobulin testing can determine if complement C3 antibody and/or immunoglobulin G is bound to the red blood cell membrane. [4]
The presence of schistocytes is a key finding that helps to diagnose HUS. Shiga-toxin directly activates the alternative complement pathway and also interferes with complement regulation by binding to complement factor H, an inhibitor of the complement cascade.
Schistocytes are fragmented cells resulting from intravascular destruction with shapes that differ from the normal round red blood cells. Serum tests evaluate plasma bilirubin, haemolysis and liver function and are essential for definitive diagnosis.
Thrombotic thrombocytopenic purpura (TTP) initially presents with a range of symptoms that may include severe thrombocytopenia (platelet count usually < 30,000/mm³), microangiopathic hemolytic anemia (evidenced by schistocytes in the blood smear), and various clinical signs such as petechiae, purpura, neurologic symptoms, myocardial ischemia ...
Autoimmune hemolytic anemia (AIHA) is an autoimmune disorder which occurs when antibodies directed against the person's own red blood cells (RBCs) cause them to burst (), leading to an insufficient number of oxygen-carrying red blood cells in circulation ().