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Related Concept Videos

Tissue Transplantation01:24

Tissue Transplantation

Tissue transplantation is a significant medical procedure involving the transfer of cells, tissues, or organs from a donor to a recipient, with the primary aim of restoring lost functions. This procedure is crucial in treating a broad spectrum of diseases, including kidney diseases, liver failure, heart disease, and certain types of cancers.
The Biology of Tissue Transplantation
The biology of tissue transplantation hinges on the Major Histocompatibility Complex (MHC) molecules. These molecules...
Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview
Kidney Transplant I: Introduction01:28

Kidney Transplant I: Introduction

A kidney transplant is a surgical approach that involves replacing a non-functioning kidney with a healthy one from a donor. This procedure is often a treatment option for end-stage renal disease (ESRD) patients. The method requires careful recipient selection, including evaluating various medical and psychosocial factors. These criteria vary between transplant centers but generally include assessments of the patient's overall health, adherence to medical recommendations, and lifestyle...
Bone Marrow Sampling and Transplants01:22

Bone 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...
Regulation of Hematopoietic Stem Cells01:01

Regulation of Hematopoietic Stem Cells

All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...
Cytotoxic T Cells-mediated Immune Response01:27

Cytotoxic T Cells-mediated Immune Response

Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...

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Related Experiment Video

Updated: May 9, 2026

Investigating the Immunological Mechanisms Underlying Organ Transplant Rejection
05:10

Investigating the Immunological Mechanisms Underlying Organ Transplant Rejection

Published on: August 20, 2007

Osteoimmunology and its implications for transplantation.

R Pacifici1

  • 1Division of Endocrinology, Metabolism and Lipids, Department of Medicine, Emory University, Atlanta, GA; Immunology and Molecular Pathogenesis Program, Emory University, Atlanta, GA.

American Journal of Transplantation : Official Journal of the American Society of Transplantation and the American Society of Transplant Surgeons
|August 7, 2013
PubMed
Summary

Osteoimmunology explores immune system, bone, and blood cell interactions. T lymphocytes regulate bone by secreting factors that affect bone resorption and formation, impacting overall bone health.

Keywords:
BonePTH

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Area of Science:

  • Osteoimmunology: The study of interactions between the immune, hematopoietic, and skeletal systems.

Background:

  • T lymphocytes are key immune cells influencing bone and hematopoietic functions.
  • These cells modulate bone homeostasis through cytokine and Wnt ligand secretion.
  • T cells interact with bone marrow stromal and osteoblastic cells via CD40 ligand (CD40L).

Purpose of the Study:

  • To describe immune cells critical for bone and hematopoietic regulation.
  • To review lymphocyte roles in mediating parathyroid hormone (PTH) and estrogen effects on bone and blood.
  • To discuss osteoimmunology's implications in transplant medicine.

Main Methods:

  • Review of scientific literature on osteoimmunology.
  • Analysis of T cell interactions with bone and hematopoietic cells.
  • Examination of lymphocyte mediation of hormonal effects on bone.

Main Results:

  • T lymphocytes influence bone resorption and formation through secreted factors.
  • T cells play a role in bone homeostasis via cell-to-cell communication.
  • Lymphocytes mediate PTH and estrogen effects relevant to bone and hematopoiesis.

Conclusions:

  • T cells are central regulators in osteoimmunology.
  • Understanding these interactions is crucial for bone health and transplant medicine.
  • Further research into osteoimmunology can inform therapeutic strategies.