TY - CHAP M1 - Book, Section TI - Agents Used in Cytopenias; Hematopoietic Growth Factors A1 - Katzung, Bertram G. A1 - Kruidering-Hall, Marieke A1 - Tuan, Rupa Lalchandani A1 - Vanderah, Todd W. A1 - Trevor, Anthony J. PY - 2021 T2 - Katzung & Trevor's Pharmacology: Examination & Board Review, 13e AB - Blood cells play essential roles in oxygenation of tissues, coagulation, protection against infectious agents, and tissue repair. Blood cell deficiency is a relatively common occurrence that can have profound repercussions. Anemia, a deficiency in oxygen-carrying erythrocytes, is either classified as microcytic, due to an insufficient supply of iron, or macrocytic, often due to a deficiency of either vitamin B12 or folic acid. Pharmacologic treatment of these types of anemia usually involves replacement of the missing substance. An alternative therapy for certain types of anemia and for deficiency in other types of blood cells is administration of recombinant hematopoietic growth factors, which stimulate the production of various lineages of blood cells and regulate blood cell function. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/10/12 UR - accessmedicine.mhmedical.com/content.aspx?aid=1180557047 ER -