RT Journal Article T1 Arginine Kinase from the Cellar Spider (Holocnemus pluchei): A New Asthma-Causing Allergen A1 Bobolea, Irina A1 Barranco, Pilar A1 Pastor Vargas, Carlos A1 Iraola, Victor A1 Vivanco Martínez, Fernando A1 Quirce, Santiago AB Background: We report a 31-year-old farmer whose work consists in handling cereal and vegetables, who consulted our clinic because of asthma symptoms after inhalation of dust during manipulation of the deposited material, usually inside the warehouse.Methods and results: Skin prick tests and specific immunoglobulin E (IgE) determinations were negative with common aeroallergens. The patient noted the presence of many spiders in the warehouse, which were identified as the cellar spider Holocnemus pluchei and the common house spider, Tegenaria domestica. Extracts of spider bodies brought in by the patient were obtained and used to perform in vivo and in vitro studies. Molecular characterization of IgE-binding bands was performed by mass spectrometry. We obtained positive prick tests to the extracts of the bodies of both spiders. Immunoblotting displayed different bands in both spider extracts, in a range of 20-70 kDa. All were hemocyanins, except for a 17-kDa protein of Holocnemus identified as an arginine kinase (AK). Bronchial challenge was positive with the extract of the cellar spider and with the AK, but was negative with the domestic house spider.Conclusion: We present the first case of respiratory allergy due to sensitization to AK from a common spider, confirmed by bronchial provocation tests. PB Karger SN 1018-2438 SN 1423-0097 YR 2010 FD 2010-12-23 LK https://hdl.handle.net/20.500.14352/107027 UL https://hdl.handle.net/20.500.14352/107027 LA eng NO Bobolea I, Barranco P, Pastor-Vargas C, Iraola V, Vivanco F, Quirce S. Arginine kinase from the cellar spider (Holocnemus pluchei): a new asthma-causing allergen. Int Arch Allergy Immunol. 2011;155(2):180-6. doi: 10.1159/000319822. Epub 2010 Dec 23. PMID: 21196763. DS Docta Complutense RD 6 abr 2025