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Howell–Jolly bodies are found on red blood cells and contain chromatin remnants from basophilic cells. [7] Under normal conditions, these nuclear remnants are removed from the blood by the spleen's filtering capabilities. Howell-Jolly bodies can be identified and quantified using a blood smear or by flow cytometry. [2]
Howell–Jolly bodies are seen with markedly decreased splenic function. Common causes include asplenia (post-splenectomy) or congenital absence of spleen (right atrial appendage isomerism). Spleens are also removed for therapeutic purposes in conditions like hereditary spherocytosis , trauma to the spleen, and autosplenectomy caused by sickle ...
Splenectomy patients typically have Howell-Jolly bodies [11] [12] and less commonly Heinz bodies in their blood smears. [13] Heinz bodies are usually found in cases of G6PD (Glucose-6-Phosphate Dehydrogenase) and chronic liver disease. [14] A splenectomy also results in a greatly diminished frequency of memory B cells. [15]
Theodor Boveri originally observed the fact that abnormal nuclear morphologies commonly occur in cancer.Micronuclei are also referred to Howell-Jolly bodies; discovered by hematologists William Henry Howell and Justin Marie Jolly in erythrocytes.
On a blood smear, Howell-Jolly bodies may be seen within red blood cells. Primary treatment for patients with symptomatic HS has been total splenectomy, which eliminates the hemolytic process, allowing for normal hemoglobin, reticulocyte and bilirubin levels. The resultant asplenic patient is susceptible to encapsulated bacterial infections ...
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Acquired asplenia occurs for several reasons: . Following splenectomy due to splenic rupture from trauma or because of tumor; After splenectomy with the goal of interfering with splenic function, as a treatment for diseases (e.g. idiopathic thrombocytopenic purpura, thalassemia, spherocytosis), in which the spleen's usual activity exacerbates the disease