{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T20:48:26Z","timestamp":1790628506864,"version":"4.1.0"},"reference-count":236,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2021,6,30]],"date-time":"2021-06-30T00:00:00Z","timestamp":1625011200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004587","name":"ISCIII","doi-asserted-by":"publisher","award":["PI18\/00044, FI19\/00067 and FI16\/00036"],"award-info":[{"award-number":["PI18\/00044, FI19\/00067 and FI16\/00036"]}],"id":[{"id":"10.13039\/501100004587","id-type":"DOI","asserted-by":"publisher"}]},{"name":"CIBERES","award":["G07"],"award-info":[{"award-number":["G07"]}]},{"DOI":"10.13039\/100004334","name":"MERCK","doi-asserted-by":"publisher","award":["5255\/003"],"award-info":[{"award-number":["5255\/003"]}],"id":[{"id":"10.13039\/100004334","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>Eosinophils are complex granulocytes with the capacity to react upon diverse stimuli due to their numerous and variable surface receptors, which allows them to respond in very different manners. Traditionally believed to be only part of parasitic and allergic\/asthmatic immune responses, as scientific studies arise, the paradigm about these cells is continuously changing, adding layers of complexity to their roles in homeostasis and disease. Developing principally in the bone marrow by the action of IL-5 and granulocyte macrophage colony-stimulating factor GM-CSF, eosinophils migrate from the blood to very different organs, performing multiple functions in tissue homeostasis as in the gastrointestinal tract, thymus, uterus, mammary glands, liver, and skeletal muscle. In organs such as the lungs and gastrointestinal tract, eosinophils are able to act as immune regulatory cells and also to perform direct actions against parasites, and bacteria, where novel mechanisms of immune defense as extracellular DNA traps are key factors. Besides, eosinophils, are of importance in an effective response against viral pathogens by their nuclease enzymatic activity and have been lately described as involved in severe acute respiratory syndrome coronavirus SARS-CoV-2 immunity. The pleiotropic role of eosinophils is sustained because eosinophils can be also detrimental to human physiology, for example, in diseases like allergies, asthma, and eosinophilic esophagitis, where exosomes can be significant pathophysiologic units. These eosinophilic pathologies, require specific treatments by eosinophils control, such as new monoclonal antibodies like mepolizumab, reslizumab, and benralizumab. In this review, we describe the roles of eosinophils as effectors and regulatory cells and their involvement in pathological disorders and treatment.<\/jats:p>","DOI":"10.3390\/ijms22137075","type":"journal-article","created":{"date-parts":[[2021,6,30]],"date-time":"2021-06-30T10:03:19Z","timestamp":1625047399000},"page":"7075","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":41,"title":["Emerging Evidence for Pleiotropism of Eosinophils"],"prefix":"10.3390","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3873-4563","authenticated-orcid":false,"given":"Jos\u00e9 M.","family":"Rodrigo-Mu\u00f1oz","sequence":"first","affiliation":[{"name":"Immunoallergy Laboratory, Immunology Department, Instituto de Investigaci\u00f3n Sanitaria Fundaci\u00f3n Jim\u00e9nez D\u00edaz (IIS-FJD), Avenida Reyes Cat\u00f3licos, 28040 Madrid, Spain"},{"name":"CIBER de Enfermedades Respiratorias (CIBERES), Av. de Monforte de Lemos, 28029 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2075-7874","authenticated-orcid":false,"given":"Marta","family":"Gil-Mart\u00ednez","sequence":"additional","affiliation":[{"name":"Immunoallergy Laboratory, Immunology Department, Instituto de Investigaci\u00f3n Sanitaria Fundaci\u00f3n Jim\u00e9nez D\u00edaz (IIS-FJD), Avenida Reyes Cat\u00f3licos, 28040 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2394-6849","authenticated-orcid":false,"given":"Beatriz","family":"Sastre","sequence":"additional","affiliation":[{"name":"Immunoallergy Laboratory, Immunology Department, Instituto de Investigaci\u00f3n Sanitaria Fundaci\u00f3n Jim\u00e9nez D\u00edaz (IIS-FJD), Avenida Reyes Cat\u00f3licos, 28040 Madrid, Spain"},{"name":"CIBER de Enfermedades Respiratorias (CIBERES), Av. de Monforte de Lemos, 28029 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6228-1969","authenticated-orcid":false,"given":"Victoria","family":"del Pozo","sequence":"additional","affiliation":[{"name":"Immunoallergy Laboratory, Immunology Department, Instituto de Investigaci\u00f3n Sanitaria Fundaci\u00f3n Jim\u00e9nez D\u00edaz (IIS-FJD), Avenida Reyes Cat\u00f3licos, 28040 Madrid, Spain"},{"name":"CIBER de Enfermedades Respiratorias (CIBERES), Av. de Monforte de Lemos, 28029 Madrid, Spain"},{"name":"Medicine Department, Universidad Aut\u00f3noma de Madrid, 28029 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,6,30]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"575","DOI":"10.1111\/cea.12480","article-title":"The early history of the eosinophil","volume":"45","author":"Kay","year":"2015","journal-title":"Clin. 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