Nasopharyngeal Dissemination
Nasopharyngeal Dissemination - Related Videos
02:36
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This video demonstrates a method to generate a mouse model of pleural dissemination by injecting lung cancer cell suspension into the thoracic cavity of an immunodeficient mouse.
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The rapid development, small size and transparency of zebrafish are tremendous advantages for the study of innate immune control of infection1-4. Here we demonstrate techniques for infecting zebrafish larvae using the fungal pathogen Candida albicans by microinjection, methodology recently used to implicate phagocyte NADPH oxidase activity in control of fungal dimorphism5.
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Quantitative Time-Lapse Microscopy for Assessing Extracellular Matrix Stiffness-Dependent Bacterial Dissemination
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Suctioning the Nasopharyngeal Airway
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2025
Nasopharyngeal suctioning is a procedure to remove secretions from the upper part of the respiratory tract that the patient cannot clear independently. It helps maintain airway patency and prevents complications such as aspiration pneumonia. Equipment Required Suction machine with adjustable pressure settings Sterile suction catheters (appropriate size for the patient) Sterile gloves Sterile saline or water (for irrigation or lubrication) Water-soluble lubricant Personal protective...
12:21
Examining the Role of Nasopharyngeal-associated Lymphoreticular Tissue (NALT) in Mouse Responses to Vaccines
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Cited by 39 •
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Methods to examine contributions of the nasopharyngeal-associated lymphoreticular tissues (NALT) to nasal and systemic immune responses of mice to intranasal vaccines are described. We demonstrate a surgical procedure to establish a NALT-dependent mouse model and ex vivo cultures of extracted NALT.
FAQs
Adhesion to respiratory epithelial cells is an early determinant of whether microorganisms remain in the nasopharynx long enough to disseminate. Attachment helps them resist removal by mucus and mucociliary clearance, while persistence creates opportunities for movement toward adjacent airway tissues or release in respiratory secretions. Studying this step connects epithelial interactions with colonization, transmission, and progression.
Nasopharyngeal dissemination depends on a balance between microbial persistence and local host defenses. Mucus and mucociliary clearance can remove organisms, whereas successful persistence indicates that these barriers have not fully contained them. Examining this balance helps immunology researchers explain why the nasopharynx can support colonization in some circumstances and permit movement or transmission in others.
Spread to adjacent airway tissues and spread to a new host represent different outcomes of the same upper-airway process. Movement toward nearby tissues relates to infection progression, whereas release in respiratory secretions supports transmission. Keeping these outcomes separate allows studies of Nasopharyngeal Dissemination to assess both tissue involvement and the likelihood that a microorganism will reach another host.
An investigation can follow dissemination as a sequence: evaluate epithelial adherence, examine persistence in mucus, consider mucociliary clearance and local immune defenses, and then assess movement toward adjacent tissues or into secretions. Organizing observations in this order links mechanism to outcome and helps identify which barrier or stage most strongly limits spread.
Immunology and infection studies use this framework to connect local events with host-level outcomes. Examining colonization, persistence, clearance, tissue progression, and secretion-associated spread can reveal whether a response limits dissemination or whether a pathogen remains positioned for transmission. The framework therefore joins microbial behavior with the protective role of upper-airway barriers.
Nasopharyngeal Dissemination is relevant when researchers evaluate vaccines or interventions intended to reduce respiratory spread. Useful outcomes include whether an approach improves containment, reduces progression into adjacent airway tissues, or lowers release through respiratory secretions. These endpoints connect experimental findings to transmission risk and disease control, while also clarifying which stage of spread an intervention affects.