Related Experiment Video
Updated: Jun 14, 2026

Determination of the Relative Potency of an Anti-TNF Monoclonal Antibody (mAb) by Neutralizing TNF Using an In Vitro Bioanalytical Method
Published on: September 16, 2017
[Non tuberculous anti-TNF associated opportunistic infections]
1Département de médecine interne, CHU de Rouen, 1, rue de Germont, 76031 Rouen cedex, France. isabelle.marie@chu-rouen.fr
Abstract:
Anti-TNFalpha agents have revolutionized the treatment of patients with rheumatoid arthritis, spondylarthropathies and Crohn's disease. However, their use is associated with an increased risk of infections. Pyogenic infections (involving the lungs, skin and urinary tract) and tuberculosis are the more commonly observed infectious complications in patients receiving anti-TNFalpha agents. However, opportunistic infections have been increasingly reported in anti-TNFalpha-treated patients, and include non tuberculous mycobacteria, fungi (Pneumocystis jiroveci, Candida sp, Aspergillus, Cryptococcus, Histoplasma), opportunistic bacterial (Nocardia), parasitic (Leishmania) and viral (e.g. Cytomegalovirus, human herpes virus 8 [HHV 8]) infections. These infectious complications usually occur within the first months of therapy and are important causes of morbidity and mortality in anti-TNFalpha-treated patients. It is recommended to rule out infections, especially latent or active tuberculosis, before the initiation of anti-TNFalpha therapy. However, it is necessary to follow-up closely these patients to detect the possible occurrence of opportunistic infections.
Insights
Anti-tumor necrosis factor-alpha (TNFalpha) therapies improve autoimmune disease treatment but increase infection risk. Close monitoring for opportunistic infections is crucial during anti-TNFalpha therapy.
Area of Science:
- Immunology
- Infectious Diseases
- Pharmacology
Context:
- Anti-tumor necrosis factor-alpha (TNFalpha) agents have transformed rheumatoid arthritis, spondylarthropathies, and Crohn's disease treatment.
- A significant concern with these therapies is the elevated risk of infections.
Purpose:
- To highlight the spectrum of infectious complications associated with anti-TNFalpha therapy.
- To emphasize the importance of pre-treatment screening and ongoing patient monitoring.
Summary:
- Common infections include pyogenic bacteria and tuberculosis.
- Opportunistic infections, such as those caused by non-tuberculous mycobacteria, fungi, Nocardia, Leishmania, and viruses (e.g., CMV, HHV-8), are increasingly reported.
- These infections typically manifest early in treatment and contribute to significant morbidity and mortality.
Impact:
- Pre-treatment screening for infections, particularly tuberculosis, is recommended before initiating anti-TNFalpha therapy.
- Vigilant follow-up is essential to detect opportunistic infections promptly.
- Managing infection risk is critical for optimizing patient outcomes in anti-TNFalpha-treated populations.
Related Concept Videos
Drugs for Treatment of Crohn's Disease in IBD Using Biologic Agents: Anti-TNF
Pulmonary Tuberculosis IV
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
Pulmonary Tuberculosis III
The first classification is based on the development of the disease, and it includes the following categories:
Pulmonary Tuberculosis I
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Pulmonary Tuberculosis II
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Pulmonary Tuberculosis V
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the progression...