Nontypeable Hemophilus Influenza

Nontypeable Haemophilus influenzae (NTHi) is a nonencapsulated bacterial pathogen that commonly colonizes the human upper respiratory tract and causes important respiratory infections. Without a polysaccharide capsule, NTHi relies on surface adhesins, lipooligosaccharide, biofilm formation, and other strategies to attach to airway tissues, persist, and stimulate inflammation while evading immune clearance. It is associated with otitis media, sinusitis, pneumonia, and exacerbations of chronic obstructive pulmonary disease, making it a key subject in immunology and infection research. Studying NTHi-host interactions supports vaccine development, antimicrobial research, and improved approaches to preventing recurrent respiratory disease.

Nontypeable Hemophilus Influenza - Related Videos

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JoVE EoE - Bacterial Growth and Techniques

Culturing Non-typeable Haemophilus influenzae

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2025

Source: Venuprasad, K. et. al., Intra-tracheal Administration of Haemophilus influenzae in Mouse Models to Study Airway Inflammation. J. Vis. Exp. (2016)This video demonstrates the culturing of non-typeable Haemophilus influenzae and the preparation of a dose-standardized inoculum for downstream colonization or infection studies.

Bronchoalveolar Lavage Fluid Collection from a Mouse Model Infected with Non-typeable Haemophilus influenzae

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2025

Source: Venuprasad, K., et al. Intra-tracheal Administration of Haemophilus influenzae in Mouse Models to Study Airway Inflammation. J. Vis. Exp. (2016)This video demonstrates the collection and processing of bronchoalveolar lavage fluid from a euthanized mouse infected with non-typeable Haemophilus influenzae for downstream analysis.

Assessing Respiratory Immune Responses to Haemophilus Influenzae

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Cited by 1 •

2021

Haemophilus influenzae induces inflammation in the respiratory tract. This article will focus on the use of flow cytometry and confocal microscopy to define immune responses by phagocytes and lymphocytes in response to this bacterium.

Intra-tracheal Administration of Haemophilus influenzae in Mouse Models to Study Airway Inflammation

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Cited by 2 •

2016

We demonstrate the procedure for intra-tracheal inoculation of Haemophilus influenzae into the lower respiratory tracts of mice. This is a very useful tool to study signaling pathways that regulate airway inflammation in mouse models.

Research

JoVE Journal - Immunology and Infection
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Fluorescence-based Neuraminidase Inhibition Assay to Assess the Susceptibility of Influenza Viruses to The Neuraminidase Inhibitor Class of Antivirals

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Cited by 56 •

2017

We describe the use of a phenotypic fluorescence-based neuraminidase inhibition assay to assess the susceptibility of influenza A and B viruses to the neuraminidase inhibitor class of antivirals.

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