Transplantation: History and Mechanisms

In course

Description

This lecture covers the history of transplantation, from the first attempts in the 1950s to the role of T lymphocytes in allograft rejection. It explains the mechanisms of transplant rejection, the importance of the major histocompatibility complex, and the different phases of clinical manifestations. The instructor also discusses immunosuppressive therapies and the concepts of tolerance and transplant rejection.

In MOOCs (4)

Instructors (2)

Official source

https://mediaspace.epfl.ch/media/0_zt40vtg3

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Related concepts (24)

Heart transplantation

A heart transplant, or a cardiac transplant, is a surgical transplant procedure performed on patients with end-stage heart failure or severe coronary artery disease when other medical or surgical treatments have failed. , the most common procedure is to take a functioning heart, with or without both lungs, from a recently deceased organ donor (brain death is the standard) and implant it into the patient.

Liver transplantation

Liver transplantation or hepatic transplantation is the replacement of a diseased liver with the healthy liver from another person (allograft). Liver transplantation is a treatment option for end-stage liver disease and acute liver failure, although availability of donor organs is a major limitation. The most common technique is orthotopic transplantation, in which the native liver is removed and replaced by the donor organ in the same anatomic position as the original liver.

Kidney transplantation

Kidney transplant or renal transplant is the organ transplant of a kidney into a patient with end-stage kidney disease (ESRD). Kidney transplant is typically classified as deceased-donor (formerly known as cadaveric) or living-donor transplantation depending on the source of the donor organ. Living-donor kidney transplants are further characterized as genetically related (living-related) or non-related (living-unrelated) transplants, depending on whether a biological relationship exists between the donor and recipient.

Reactive lymphocyte

In immunology, reactive lymphocytes, variant lymphocytes, atypical lymphocytes, Downey cells or Türk cells are cytotoxic (CD8+) lymphocytes that become large as a result of antigen stimulation. Typically, they can be more than 30 μm in diameter with varying size and shape. == Discovery == It was originally described by W. Türk in 1907 in the peripheral blood of patients with infectious mononucleosis. Later in 1923 the features of the reactive lymphocytes were characterized in greater detail by Hal Downey and C.

Immunosuppression

Immunosuppression is a reduction of the activation or efficacy of the immune system. Some portions of the immune system itself have immunosuppressive effects on other parts of the immune system, and immunosuppression may occur as an adverse reaction to treatment of other conditions. In general, deliberately induced immunosuppression is performed to prevent the body from rejecting an organ transplant.