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Detection of activated eosinophils in nasal polyps of an aspirin-induced asthma patient.
Rhinology. 1999 Mar; 37(1):16-20.R

Abstract

Aspirin-induced asthma (AIA) is frequently accompanied by nasal polyps. Eosinophil infiltration is a characteristic feature of nasal polyps associated with AIA. Even though steroids are well known to be effective on managing AIA and its nasal polyps, histochemical examinations after steroid therapy and at recurrence, involving eosinophil infiltration of nasal polyps, have been less studied. To know the histochemical effects of steroid treatment on eosinophil accumulation in nasal polyps of AIA and the histochemical feature of a recurring polyp and to detect distributional differences between storage and secreted forms of eosinophil cationic proteins, we carried out immunocytochemical labelling with antibodies against EGI (recognizing resting and activated eosinophils) and EG2 (recognizing only activated eosinophils), and determined eosinophil infiltration in nasal polyps that were obtained before and after steroid treatment, and at recurrence of polyps. A large number of eosinophils in AIA polyps were found before steroid treatment and at recurrence, and they were predominantly composed of activated eosinophils (EG2-positive). In contrast, eosinophil infiltration was rare in polyps obtained immediately after steroid treatment. This finding suggests that eosinophil infiltration may be associated with nasal polyp formation in AIA, and that activation of eosinophils plays an important role in accumulation of eosinophils and polyp formation beginning with the initial stage.

Authors+Show Affiliations

Department of Otolaryngology, Yamaguchi University School of Medicine, Japan.No affiliation info availableNo affiliation info available

Pub Type(s)

Case Reports
Journal Article

Language

eng

PubMed ID

10229976

Citation

Ogata, Y, et al. "Detection of Activated Eosinophils in Nasal Polyps of an Aspirin-induced Asthma Patient." Rhinology, vol. 37, no. 1, 1999, pp. 16-20.
Ogata Y, Okinaka Y, Takahashi M. Detection of activated eosinophils in nasal polyps of an aspirin-induced asthma patient. Rhinology. 1999;37(1):16-20.
Ogata, Y., Okinaka, Y., & Takahashi, M. (1999). Detection of activated eosinophils in nasal polyps of an aspirin-induced asthma patient. Rhinology, 37(1), 16-20.
Ogata Y, Okinaka Y, Takahashi M. Detection of Activated Eosinophils in Nasal Polyps of an Aspirin-induced Asthma Patient. Rhinology. 1999;37(1):16-20. PubMed PMID: 10229976.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Detection of activated eosinophils in nasal polyps of an aspirin-induced asthma patient. AU - Ogata,Y, AU - Okinaka,Y, AU - Takahashi,M, PY - 1999/5/7/pubmed PY - 1999/5/7/medline PY - 1999/5/7/entrez SP - 16 EP - 20 JF - Rhinology JO - Rhinology VL - 37 IS - 1 N2 - Aspirin-induced asthma (AIA) is frequently accompanied by nasal polyps. Eosinophil infiltration is a characteristic feature of nasal polyps associated with AIA. Even though steroids are well known to be effective on managing AIA and its nasal polyps, histochemical examinations after steroid therapy and at recurrence, involving eosinophil infiltration of nasal polyps, have been less studied. To know the histochemical effects of steroid treatment on eosinophil accumulation in nasal polyps of AIA and the histochemical feature of a recurring polyp and to detect distributional differences between storage and secreted forms of eosinophil cationic proteins, we carried out immunocytochemical labelling with antibodies against EGI (recognizing resting and activated eosinophils) and EG2 (recognizing only activated eosinophils), and determined eosinophil infiltration in nasal polyps that were obtained before and after steroid treatment, and at recurrence of polyps. A large number of eosinophils in AIA polyps were found before steroid treatment and at recurrence, and they were predominantly composed of activated eosinophils (EG2-positive). In contrast, eosinophil infiltration was rare in polyps obtained immediately after steroid treatment. This finding suggests that eosinophil infiltration may be associated with nasal polyp formation in AIA, and that activation of eosinophils plays an important role in accumulation of eosinophils and polyp formation beginning with the initial stage. SN - 0300-0729 UR - https://www.unboundmedicine.com/medline/citation/10229976/Detection_of_activated_eosinophils_in_nasal_polyps_of_an_aspirin_induced_asthma_patient_ L2 - https://www.rhinologyjournal.com/Abstract.php?id=139 DB - PRIME DP - Unbound Medicine ER -