Side Effects of Glucocorticoids

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Questions and Answers

What is a characteristic symptom of serum sickness?

  • Immune complex glomerulonephritis
  • Anaphylaxis
  • Urticaria (hives) (correct)
  • Rigor episodes

What is the main advantage of monoclonal antibodies over polyclonal antibodies?

  • They are less expensive to produce
  • They are more easily purified
  • They are more specific to an antigen (correct)
  • They have a shorter half-life

What is the role of polyethylene glycol (PEG-1500) in the production of monoclonal antibodies?

  • It is used to stimulate the immune response
  • It is used to purify the antibodies
  • It is used as a fusion agent (correct)
  • It is used to eliminate normal cells

What is the consequence of hybridization between two normal cells during the production of monoclonal antibodies?

<p>They die in the usual culture conditions (B)</p> Signup and view all the answers

What is the purpose of using steroids and analgesics in the treatment of serum sickness?

<p>To soothe the symptoms of fever, joint pain, and erythema (D)</p> Signup and view all the answers

What is the difference between monoclonal and polyclonal antibodies?

<p>Monoclonal antibodies are against a specific epitope of an antigen (D)</p> Signup and view all the answers

What is an example of a monoclonal antibody used to treat autoimmune diseases?

<p>All of the above (D)</p> Signup and view all the answers

What is the consequence of using monoclonal antibodies in the treatment of autoimmune diseases?

<p>They cause fewer side effects (A)</p> Signup and view all the answers

What is the characteristic of monoclonal antibodies produced in multiple myeloma?

<p>They are unwanted (C)</p> Signup and view all the answers

What is the purpose of hybridoma technology in the production of monoclonal antibodies?

<p>To produce monoclonal antibodies (B)</p> Signup and view all the answers

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Study Notes

Glucocorticoids

  • Patients should expect common early adverse effects, such as sweatiness, hoarse voice, loss of appetite, and stimulation.
  • Rarely, more serious acute psychiatric disturbances can occur, including agitation, aggression, or psychosis.
  • Long-term and less reversible adverse effects include Cushingoid appearance, proximal myopathy, hypertension, hyperlipidaemia, diabetes, cataract formation, peptic ulceration, osteopenia, and aseptic necrosis of bone.

Cytostatics

  • Cytostatics inhibit cell division and are used in immunotherapy in smaller doses than in the treatment of malignant diseases.
  • They affect the proliferation of both T cells and B cells.
  • Examples of cytostatics include alkylating agents (e.g., cyclophosphamide), antimetabolites (e.g., folic acid analogues, purine analogues), and cytotoxic antibiotics (e.g., dactinomycin, anthracyclines, mitomycin C, bleomycin, mithramycin).

Antibodies

  • Antibodies are used for quick and potent immunosuppression to prevent acute rejection reactions.
  • There are two types of antibodies: polyclonal antibodies and monoclonal antibodies.
  • Polyclonal antibodies inhibit T lymphocytes, cause their lysis, and affect all lymphocytes, leading to general immunosuppression and possibly post-transplant lymphoproliferative disorders or serious infections.
  • Monoclonal antibodies are directed towards exactly defined antigens and cause fewer side effects.

Immunosuppressive Drugs

  • Immunosuppressive drugs reduce the activation or efficacy of the immune system.
  • They are used to control severe manifestations of allergic, autoimmune, and organ transplant-related diseases.
  • Examples of immunosuppressive drugs include glucocorticoids, cytostatics, and antibodies.

Classification of Immunosuppressive Drugs

  • Immunosuppressive drugs can be classified into three major groups: glucocorticoids, cytostatics, and antibodies.

Glucocorticoids

  • Glucocorticoids act by inhibiting genes that code for cytokines IL-1, IL-2, IL-3, IL-4, IL-5, IL-6, IL-8, and TNF-γ.
  • Examples of glucocorticoids include prednisolone, azathioprine, mycophenolate, and methotrexate.

Monoclonal Antibodies (mAb)

  • Monoclonal antibodies are directed towards exactly defined antigens and cause fewer side effects.
  • Examples of monoclonal antibodies include muromonab-CD3, Basiliximab, daclizumab, rituximab, and alemtuzumab.

Production of Monoclonal Antibodies

  • Monoclonal antibodies are produced in multiple myeloma where only one clone secretes a particular type of antibody.
  • In the laboratory, monoclonal antibodies can be generated by hybridoma technology.
  • The process of hybridoma technology involves injecting an antigen into mice, fusing spleen cells from immunized mice with mice myeloma cells, and using polyethylene glycol as a fusion agent.

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