Book contents
- Neonatal Hematology
- Neonatal Hematology
- Copyright page
- Contents
- Foreword
- Preface
- Contributors
- Section I Developmental Hematology
- Chapter 1 A Historical Review
- Chapter 2 Hematopoiesis
- Chapter 3 The Development of the Human Immune System
- Section II Bone Marrow Failure and Immune Disorders
- Section III Erythrocyte Disorders
- Section IV Platelet Disorders
- Section V Leucocyte Disorders
- Section VI Hemostatic Disorders
- Section VII Neonatal Transfusion Medicine
- Section VIII Neonatal Oncology
- Section IX Miscellaneous
- Index
- Plate Section (PDF Only)
- References
Chapter 2 - Hematopoiesis
from Section I - Developmental Hematology
Published online by Cambridge University Press: 30 January 2021
- Neonatal Hematology
- Neonatal Hematology
- Copyright page
- Contents
- Foreword
- Preface
- Contributors
- Section I Developmental Hematology
- Chapter 1 A Historical Review
- Chapter 2 Hematopoiesis
- Chapter 3 The Development of the Human Immune System
- Section II Bone Marrow Failure and Immune Disorders
- Section III Erythrocyte Disorders
- Section IV Platelet Disorders
- Section V Leucocyte Disorders
- Section VI Hemostatic Disorders
- Section VII Neonatal Transfusion Medicine
- Section VIII Neonatal Oncology
- Section IX Miscellaneous
- Index
- Plate Section (PDF Only)
- References
Summary
Hematopoiesis refers to the continuous production and release of blood cells into the circulation. As blood cells become old or injured, self-renewing hematopoietic stem cells (HSC) proliferate and differentiate to replenish multiple hematopoietic lineages. This process produces nearly 200 billion red blood cells, 10 billion white blood cells, and 400 billion platelets every day. In addition to the requirement for high cell production, the concentration of individual blood cell lineages is precisely regulated in the peripheral blood and tissues. The production and use of circulating blood cells increase during periods of altered homeostasis such as defense against infection or replenishment of circulating red cells after hemorrhage. When the tightly regulated production of blood cells fails, the host may encounter life-threatening anemia or other cytopenias or suffer from excessive neoplastic growth of blood cells manifesting as leukemia.
- Type
- Chapter
- Information
- Neonatal HematologyPathogenesis, Diagnosis, and Management of Hematologic Problems, pp. 10 - 24Publisher: Cambridge University PressPrint publication year: 2021