Functional receptor recruitment by monomeric forms of interleukin-5

1997 ◽  
Vol 56 (1-3) ◽  
pp. 284
Author(s):  
J Li
Blood ◽  
1996 ◽  
Vol 87 (6) ◽  
pp. 2354-2360 ◽  
Author(s):  
D Aldebert ◽  
B Lamkhioued ◽  
C Desaint ◽  
AS Gounni ◽  
M Goldman ◽  
...  

Recent reports describe the beneficial use of alpha interferon (IFNalpha) for the treatment of idiopathic hypereosinophilic syndrome (HES) unresponsive to conventional therapy. A clinical improvement associated with a rapid decrease of peripheral blood eosinophilia suggested possible direct effects of IFNalpha on eosinophils through the presence of IFNalpha receptors (IFNalphaR). Reverse transcriptase- polymerase chain reaction (RT-PCR) and cytochemistry were used respectively to detect the presence and define the distribution of IFNalphaR on enriched eosinophil preparations purified from blood cells. IFNalphaR was found on eosinophils collected from patients with various eosinophilic disorders. In addition, IFNalpha inhibited the release of eosinophil granule proteins such as eosinophil cationic protein (ECP), neurotoxin (EDN, or interleukin-5 (IL-5). Moreover, antiparasite cytotoxicity was also strongly reduced in a dose-dependent manner by IFNalpha. These results provide the first evidence that human eosinophils express a functional receptor for IFNalpha and represent a potential basis for the beneficial effects of IFNalpha in patients with hypereosinophilic syndromes.


1997 ◽  
Vol 56 ◽  
pp. 284
Author(s):  
J. Li ◽  
R. Cook ◽  
M. Doyle ◽  
P. Hensley ◽  
D. McNulty ◽  
...  

1997 ◽  
Vol 27 (11) ◽  
pp. 1254-1260 ◽  
Author(s):  
M. O. HOEKSTRA ◽  
Y. HOEKSTRA ◽  
D. DE REUS ◽  
B. RUTGERS ◽  
J. GERRITSEN ◽  
...  

2020 ◽  
Vol 2 (1) ◽  
pp. 17
Author(s):  
Meilina Wardhani ◽  
Ressy Irma Juwita ◽  
Mitayani Purwoko

Latar Belakang: Rinitis alergi adalah suatu penyakit pada hidung yang ditimbulkan oleh reaksi inflamasi mpada mukosa hidung dengan perantara immunoglobulin E. Prevalensi rinitis alergi di dunia telah meningkat termasuk di Indonesia yang kini telah mencapai 1,5-12.4% dan cenderung mengalami peningkatan setiap tahunnya. Penelitian ini bertujuan untuk mencari prevalensi rinitis alergi dan hubungan antara jenis kelamin dan riwayat asma dengan kejadian rinitis alergi pada siswa sekolah di Palembang. Metode: Penelitian ini adalah penelitian analitik observasional dengan desain cross sectional. Penelitian dilakukan di SMP Muhammadiyah 3 Palembang pada tahun 2018. Data primer diperoleh dengan cara meminta subjek penelitian untuk mengisi kuesioner ISAAC. Kriteria inklusi penelitian ini adalah siswa-siswi berusia 13-14 tahun. Besar sampel yang digunakan sebanyak 80 responden, diambil teknik total sampling.Hasil: Pada penelitian ini didapatkan prevalensi rinitis alergi sebesar 51,2% dan jenis kelamin (p=0,014) dan riwayat asma (p=0,019) sebagai faktor risiko terjadinya rinitis alergi.  Perempuan lebih banyak menderita rinitis alergi dibanding laki-laki kemungkinan disebabkan perempuan lebih sering terpapar allergen berupa debu akibat sering melakukan pekerjaan rumah tangga seperti menyapu. Adanya paparan alergen terhadap mukosa hidung akan meningkatkan konsentrasi berbagai faktor yang terkait asma seperti eosinophil, interleukin-5 dan sel CD34 di darah perifer. Kesimpulan: Jenis kelamin dan riwayat asma merupakan faktor risiko terjadinya rinitis alergi pada anak.


1994 ◽  
Vol 14 (11) ◽  
pp. 7404-7413 ◽  
Author(s):  
S Takaki ◽  
H Kanazawa ◽  
M Shiiba ◽  
K Takatsu

Interleukin-5 (IL-5) regulates the production and function of B cells, eosinophils, and basophils. The IL-5 receptor (IL-5R) consists of two distinct membrane proteins, alpha and beta. The alpha chain (IL-5R alpha) is specific to IL-5. The beta chain is the common beta chain (beta c) of receptors for IL-3 and granulocyte-macrophage colony-stimulating factor (GM-CSF). The cytoplasmic domains of both alpha and beta chains are essential for signal transduction. In this study, we generated cDNAs of IL-5R alpha having various mutations in their cytoplasmic domains and examined the function of these mutants by expressing them in IL-3-dependent FDC-P1 cells. The membrane-proximal proline-rich sequence of the cytoplasmic domain of IL-5R alpha, which is conserved among the alpha chains of IL-5R, IL-3R, and GM-CSF receptor (GM-CSFR), was found to be essential for the IL-5-induced proliferative response, expression of nuclear proto-oncogenes such as c-jun, c-fos, and c-myc, and tyrosine phosphorylation of cellular proteins including JAK2 protein-tyrosine kinase. In addition, analysis using chimeric receptors which consist of the extracellular domain of IL-5R alpha and the cytoplasmic domain of beta c suggested that dimerization of the cytoplasmic domain of beta c may be an important step in activating the IL-5R complex and transducing intracellular growth signals.


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