Related Experiment Video
Updated: Jun 17, 2026
05:27
Stromal Cell Isolation From Hematopoietic Organs
Published on: January 26, 2024
Summary
Aging significantly impacts bone marrow and thymus function, leading to reduced cellularity, increased risks of anemia and blood disorders, and weakened immunity. These age-related changes diminish the body's ability to respond to illness.
Area of Science:
- Gerontology
- Immunology
- Hematology
Background:
- Bone marrow and thymus undergo significant changes with aging.
- These age-related changes affect hematologic and immune functions.
- The precise mechanisms driving these alterations are not fully understood.
Purpose of the Study:
- To review age-related changes in bone marrow and thymus.
- To discuss the functional consequences of these changes in later life.
- To highlight the impact on adaptive immunity and hematopoiesis.
Main Methods:
- This is a review article.
- It synthesizes existing literature on aging, bone marrow, and thymus.
- Focuses on functional outcomes and clinical implications.
Main Results:
- Aging leads to decreased bone marrow cellularity.
- Increased incidence of anemia and myeloproliferative disorders observed.
- Adaptive immunity declines with age.
- Physiological reserve is reduced, impairing stress response.
Conclusions:
- Age-related decline in bone marrow and thymus function is significant.
- These changes can compromise the body's response to illness and stress.
- Further research is needed to elucidate the underlying mechanisms.
Related Concept Videos
01:16Primary Lymphoid Organs
Primary lymphoid organs are pivotal in the formation, development, and maturation of lymphocytes, the white blood cells that serve as the backbone of our immune system. This crucial function underscores their fundamental role in maintaining our overall health and immunity. The two primary lymphoid organs of prime importance are the red bone marrow and the thymus.
The red bone marrow is a soft, spongy tissue nestled in the interior of long bones such as the humerus and femur. It is the site...
The red bone marrow is a soft, spongy tissue nestled in the interior of long bones such as the humerus and femur. It is the site...
01:20Overview of Hematopoiesis
Hematopoiesis, or blood cell production, is a vital biological process that begins early in embryonic development and continues throughout life. This process generates the various types of cells found in blood, including red blood cells, white blood cells, and platelets from hematopoietic stem cells (HSCs).
Developmental Phases of Hematopoiesis
Initially, HSCs are formed in the embryonic yolk sac, a critical site for early blood cell production. These stem cells subsequently migrate to other...
Developmental Phases of Hematopoiesis
Initially, HSCs are formed in the embryonic yolk sac, a critical site for early blood cell production. These stem cells subsequently migrate to other...
01:21Hematopoiesis
The process of blood cell formation is called hematopoiesis. Hematopoiesis starts early during development, on the seventh day of embryogenesis. This phase of hematopoiesis is called the primitive wave, wherein the extraembryonic yolk sac allows the production of erythroid cells and endothelial cells from a common precursor called hemangioblast. The erythroid cells provide oxygen to support the growth of the rapidly dividing embryo. Hemangioblasts later develop into hematopoietic stem cells or...
01:22Bone Marrow Sampling and Transplants
Bone marrow transplant is a potential cure for several diseases, including cancer and specific genetic disorders. Notably, this procedure is applicable for patients suffering from aplastic anemia, certain types of leukemia, severe combined immunodeficiency disease (SCID), Hodgkin's disease, non-Hodgkin's lymphoma, multiple myeloma, thalassemia, sickle-cell disease, and certain cancers.
The transplant begins with high doses of chemotherapy and radiation treatment, which aim to destroy the...
The transplant begins with high doses of chemotherapy and radiation treatment, which aim to destroy the...
01:34Production of Formed Elements
Hemangioblasts are multipotent stem cells originating from the mesoderm. They give rise to hematopoietic stem cells (HSCs), which undergo hematopoiesis to produce all the formed elements of blood. This process is regulated by a complex network of hematopoietic growth factors, including transcription factors, growth factors, and cytokines. These factors stimulate the HSCs to divide and differentiate, though some HSCs remain undifferentiated to maintain a self-renewing pool.
Most HSCs commit to...
Most HSCs commit to...
01:09Changes in the Appendicular Skeleton with Age
The upper and lower limb initially develops as a small bulge called a limb bud, which appears on the lateral side of the early embryo. The upper limb bud appears near the end of the fourth week of development, with the lower limb bud appearing shortly after.
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...