PMID- 18809098 OWN - NLM STAT- MEDLINE DCOM- 20081202 LR - 20181201 IS - 0037-1963 (Print) IS - 0037-1963 (Linking) VI - 45 IP - 4 DP - 2008 Oct TI - Erythropoietic agents and the elderly. PG - 267-75 LID - 10.1053/j.seminhematol.2008.06.007 [doi] AB - Erythropoietin (Epo) is a peptide hormone that stimulates erythropoiesis. There are several agents in clinical use and in development that either act as ligands for the cell surface receptors of Epo or promote Epo production, which stimulates erythropoiesis. These are known as erythropoietic agents. The agents already in use include epoetin alfa, epoetin beta, and darbepoetin alfa. Newer agents under active investigation include continuous erythropoietin receptor activator (CERA) or proline hydroxylase inhibitors that increase hypoxia-inducible factor-1 (HIF-1), thereby stimulating Epo production and iron availability and supply. Erythropoietic agents have been shown to promote neuronal regeneration and to decrease post-stroke infarct size in mouse models. They have also been reported to shorten survival when used to treat anemia in many cancer patients and to increase thromboembolism. In contrast, rapid decrease of Epo levels as observed in astronauts and high-altitude dwellers upon rapid descent to sea level leads to the decrease of erythroid mass, a phenomenon known as "neocytolysis." The relative decrease in the serum Epo level is known to occur in some subjects with otherwise unexplained anemia of aging. Anemia by itself is a predictor of poor physical function in the elderly and is a significant economic burden on society. One out of every five persons in the United States will be elderly by 2050. Erythropoietic agents, by preventing and treating otherwise unexplained anemias of the elderly and anemia associated with other disease conditions of the elderly, have the potential to improve the functional capacity and to decrease the morbidity and mortality in the elderly, thereby alleviating the overall burden of medical care in society. FAU - Agarwal, Neeraj AU - Agarwal N AD - Hematology and Oncology, Department of Internal Medicine, University of Utah School of Medicine and Veterans Administration Hospital, Salt Lake City, UT, USA. FAU - Prchal, Josef T AU - Prchal JT LA - eng GR - P01 CA108671/CA/NCI NIH HHS/United States GR - P01 CA108671-030001/CA/NCI NIH HHS/United States GR - R01 HL050077/HL/NHLBI NIH HHS/United States GR - R01 HL050077-13/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Review PL - United States TA - Semin Hematol JT - Seminars in hematology JID - 0404514 RN - 0 (EPO mimetic peptide 1) RN - 0 (Hematinics) RN - 0 (Peptides) RN - 0 (Peptides, Cyclic) RN - 0 (Receptors, Erythropoietin) RN - 0 (Recombinant Proteins) RN - 0 (continuous erythropoietin receptor activator) RN - 0 (hematide) RN - 11096-26-7 (Erythropoietin) RN - 3WJQ0SDW1A (Polyethylene Glycols) RN - 474EI5756Y (epoetin delta) SB - IM MH - Aged MH - Anemia/complications/*drug therapy/economics MH - Animals MH - Critical Illness MH - Erythropoiesis/drug effects MH - Erythropoietin/biosynthesis/metabolism/*therapeutic use MH - Hematinics/economics/metabolism/*therapeutic use MH - Humans MH - Kidney Failure, Chronic/drug therapy MH - Mice MH - Peptides/therapeutic use MH - Peptides, Cyclic/therapeutic use MH - Polyethylene Glycols/therapeutic use MH - Receptors, Erythropoietin/metabolism/therapeutic use MH - Recombinant Proteins PMC - PMC2643059 MID - NIHMS71455 EDAT- 2008/09/24 09:00 MHDA- 2008/12/17 09:00 PMCR- 2009/10/01 CRDT- 2008/09/24 09:00 PHST- 2008/09/24 09:00 [pubmed] PHST- 2008/12/17 09:00 [medline] PHST- 2008/09/24 09:00 [entrez] PHST- 2009/10/01 00:00 [pmc-release] AID - S0037-1963(08)00116-9 [pii] AID - 10.1053/j.seminhematol.2008.06.007 [doi] PST - ppublish SO - Semin Hematol. 2008 Oct;45(4):267-75. doi: 10.1053/j.seminhematol.2008.06.007.