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Related Concept Videos

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...
Retrovirus Life Cycles01:10

Retrovirus Life Cycles

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...
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...
Inhibitors of Virion Maturation and Assembly01:19

Inhibitors of Virion Maturation and Assembly

As part of their replication cycle, certain viruses synthesize long precursor proteins called polyproteins within infected host cells. In human immunodeficiency virus (HIV), two major polyproteins are produced: Gag and Gag-Pol. The Gag polyprotein supplies the structural components of the virus, while Gag-Pol includes essential viral enzymes such as reverse transcriptase, integrase, and protease. After synthesis, these polyproteins move to the host cell membrane, where they assemble into an...
Size and Structure of Viral Genomes01:26

Size and Structure of Viral Genomes

Viral genomes exhibit remarkable diversity in size, structure, and composition, influencing their replication strategies and interactions with host cells. These genomes consist of either DNA or RNA and may be linear or circular. Additionally, they can be single-stranded or double-stranded, with each configuration affecting how the virus propagates within a host. RNA viruses, for instance, generally have smaller genomes than DNA viruses, a factor that contributes to their high mutation rates and...
Cryptococcal Meningitis01:27

Cryptococcal Meningitis

Cryptococcal meningitis is a life-threatening opportunistic infection predominantly associated with HIV/AIDS, accounting for over 100,000 deaths annually worldwide. However, it also affects individuals with other forms of immunosuppression, including those undergoing immunosuppressive therapy, organ transplant recipients, patients with innate immunodeficiencies, and individuals with hematological disorders. The infection is caused mainly by Cryptococcus neoformans and Cryptococcus gattii,...

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Updated: Jun 23, 2026

Ex Vivo Infection of Human Lymphoid Tissue and Female Genital Mucosa with Human Immunodeficiency Virus 1 and Histoculture
11:14

Ex Vivo Infection of Human Lymphoid Tissue and Female Genital Mucosa with Human Immunodeficiency Virus 1 and Histoculture

Published on: October 12, 2018

HIV infection.

Martin Talbot1

  • 1Royal Hallamshire Hospital, Sheffield Teaching Hospitals, Sheffield, UK.

BMJ Clinical Evidence
|May 19, 2009
PubMed
Summary
This summary is machine-generated.

This systematic review evaluates human immunodeficiency virus (HIV) treatments. It found that various antiretroviral regimens and interventions improve outcomes for people with HIV.

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Chronic, Acute, and Reactivated HIV Infection in Humanized Immunodeficient Mouse Models
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Chronic, Acute, and Reactivated HIV Infection in Humanized Immunodeficient Mouse Models

Published on: December 3, 2019

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Last Updated: Jun 23, 2026

Ex Vivo Infection of Human Lymphoid Tissue and Female Genital Mucosa with Human Immunodeficiency Virus 1 and Histoculture
11:14

Ex Vivo Infection of Human Lymphoid Tissue and Female Genital Mucosa with Human Immunodeficiency Virus 1 and Histoculture

Published on: October 12, 2018

Chronic, Acute, and Reactivated HIV Infection in Humanized Immunodeficient Mouse Models
09:54

Chronic, Acute, and Reactivated HIV Infection in Humanized Immunodeficient Mouse Models

Published on: December 3, 2019

Area of Science:

  • Infectious Diseases
  • Immunology
  • Pharmacology

Background:

  • Human immunodeficiency virus (HIV) infection typically has an 8-10 year asymptomatic period before progression to Acquired Immunodeficiency Syndrome (AIDS).
  • Without treatment, approximately 50% of individuals with HIV will develop AIDS and die within 10 years.
  • Prognosis for treated HIV infection is influenced by patient age, CD4 cell count, and initial viral load.

Purpose of the Study:

  • To systematically review the effects of preventive interventions for HIV infection.
  • To evaluate the effectiveness of different antiretroviral drug treatment regimens in managing HIV infection.

Main Methods:

  • Conducted a systematic literature review searching Medline, Embase, and The Cochrane Library up to June 2007.
  • Included data from 17 systematic reviews, randomized controlled trials (RCTs), and observational studies.
  • Incorporated harms alerts from regulatory agencies like the US FDA and UK MHRA.

Main Results:

  • A GRADE evaluation was performed to assess the quality of evidence for various interventions.
  • Seventeen studies met the inclusion criteria, providing data on intervention effectiveness and safety.

Conclusions:

  • The review presents evidence on combination treatments including CCR5 or fusion inhibitors.
  • Effectiveness of early diagnosis and treatment of sexually transmitted diseases (STDs) was assessed.
  • Information on early vs. delayed antiretroviral treatment, various triple-drug regimens (NNRTI, NRTI, protease inhibitor-based), post-exposure prophylaxis, and mass STD treatment is provided.