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Related Concept Videos

Immunodeficiency Diseases01:25

Immunodeficiency Diseases

Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
There are three main causes of immunodeficiency disorders...
Sexually Transmitted Infections01:26

Sexually Transmitted Infections

Sexually transmitted infections (STIs) are diseases transmitted primarily through unsafe sexual interactions. Bacteria, viruses, or parasites cause them and can result in severe health complications if untreated.ChlamydiaThe bacterium Chlamydia trachomatis is responsible for the disease Chlamydia, the most common STI in the United States. This peculiar pathogen requires human cells to reproduce, residing intracellularly. The initial infection often goes unnoticed because it typically does not...
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Retroviruses have a single-stranded RNA genome that undergoes a special form of replication. Once the retrovirus has entered the host cell, an enzyme called reverse transcriptase synthesizes double-stranded DNA from the retroviral RNA genome. This DNA copy of the genome is then integrated into the host’s genome inside the nucleus via an enzyme called integrase. Consequently, the retroviral genome is transcribed into RNA whenever the host’s genome is transcribed, allowing the retrovirus to...
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Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
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The hosts' susceptibility to infection depends on several factors. The integrity of the skin and mucous membranes helps protect the body against microbial attacks. When the skin is altered, the chance of infection, limb loss, and even death increases.
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Related Experiment Video

Updated: May 21, 2026

Isolation of Exosomes from the Plasma of HIV-1 Positive Individuals
06:46

Isolation of Exosomes from the Plasma of HIV-1 Positive Individuals

Published on: January 5, 2016

Immunosenescence and HIV.

Steven G Deeks1, Eric Verdin, Joseph M McCune

  • 1HIV/AIDS Program, Department of Medicine, University of California, San Francisco, CA, USA.

Current Opinion in Immunology
|June 5, 2012
PubMed
Summary
This summary is machine-generated.

HIV infection accelerates immune system aging, known as immunosenescence. This increases susceptibility to infections and age-related diseases, highlighting the need for further research into its causes and treatments.

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Peptide-based Identification of Functional Motifs and their Binding Partners
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Last Updated: May 21, 2026

Isolation of Exosomes from the Plasma of HIV-1 Positive Individuals
06:46

Isolation of Exosomes from the Plasma of HIV-1 Positive Individuals

Published on: January 5, 2016

Peptide-based Identification of Functional Motifs and their Binding Partners
14:28

Peptide-based Identification of Functional Motifs and their Binding Partners

Published on: June 30, 2013

Area of Science:

  • Immunology
  • Virology
  • Gerontology

Background:

  • Replicative senescence is a cellular aging process involving a pro-inflammatory secretory program.
  • HIV infection accelerates this senescence pathway within immune cells.
  • Environmental factors, such as cytomegalovirus (CMV) co-infection, can exacerbate this process.

Purpose of the Study:

  • To review the mechanisms by which HIV infection accelerates immune system aging (immunosenescence).
  • To discuss the role of co-infections and environmental factors in HIV-related immunosenescence.
  • To explore the clinical implications of accelerated immunosenescence in HIV disease.

Main Methods:

  • This is a review article, synthesizing existing research.
  • It draws upon basic cell biology studies and clinical observations.
  • Focuses on the interplay between HIV, environmental factors, and immune aging.

Main Results:

  • HIV accelerates replicative senescence in immune cells, leading to an immunosuppressed state.
  • Accelerated immunosenescence impairs viral containment and promotes HIV replication.
  • Clinical outcomes include reduced response to new infections and increased age-associated end-organ diseases (cardiovascular, cancer, neurologic).

Conclusions:

  • Accelerated immunosenescence in HIV disease is linked to higher morbidity and mortality.
  • Further investigation into the causes, diagnosis, and treatment of HIV-related immunosenescence is critical.
  • Understanding and managing immunosenescence is essential for improving long-term outcomes in individuals with HIV.