Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Insulinlike growth factor I immunoreactivity in nasal polyps.

B Petruson1, H A Hansson, K Petruson

  • 1Ear, Nose, and Throat Department, University of Göteborg, Sweden.

Archives of Otolaryngology--Head & Neck Surgery
|November 1, 1988
PubMed
Summary

Nasal polyps show elevated insulin-like growth factor I (IGF-I). This growth factor may drive polyp formation by stimulating tissue and blood vessel growth in the sinuses, potentially linked to inflammation.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

SURFACE STRUCTURE OF ISOLATED NEURONS : Detachment of Nerve Terminals during Axon Regeneration.

The Journal of cell biology·2009
Same author

Moderate superficial hypothermia prolongs bleeding time in humans.

Acta anaesthesiologica Scandinavica·2006
Same author

Nitric oxide production in the sphenoidal sinus by the inducible and constitutive isozymes of nitric oxide synthase.

Rhinology·2005
Same author

Nasopharyngeal glioma in a new-born girl.

Rhinology·2002
Same author

Pure sesame oil vs isotonic sodium chloride solution as treatment for dry nasal mucosa.

Archives of otolaryngology--head & neck surgery·2001
Same author

Different methods for evaluating daytime tiredness in snoring men.

Acta oto-laryngologica·2001

Area of Science:

  • Otolaryngology
  • Cell Biology
  • Immunology

Background:

  • Nasal polyps are inflammatory growths in the sinonasal cavity.
  • The exact mechanisms driving polyp formation are not fully understood.
  • Macrophages are implicated in inflammatory responses within nasal polyps.

Purpose of the Study:

  • To investigate the expression of insulin-like growth factor I (IGF-I) in nasal polyps.
  • To propose a hypothesis for nasal polyp formation involving IGF-I.

Main Methods:

  • Immunohistochemical analysis of nasal polyp tissue from 15 patients.
  • Assessment of IGF-I immunoreactivity within the polyps.

Main Results:

  • All nasal polyp samples (15/15) exhibited increased IGF-I immunoreactivity.

Related Experiment Videos

  • IGF-I accumulation in the paranasal sinuses is hypothesized to stimulate epithelial and vascular growth.
  • Ongoing inflammation, endothelial cells, and macrophages contribute to continued polyp growth.

    • Conclusions:

    • Elevated IGF-I expression is a consistent finding in nasal polyps.
    • IGF-I is proposed as a key mediator in the pathogenesis of nasal polyps.
    • A multifactorial hypothesis involving growth factors and inflammatory cells explains polyp development.