PMID- 28466565 OWN - NLM STAT- MEDLINE DCOM- 20190625 LR - 20190625 IS - 1440-1681 (Electronic) IS - 0305-1870 (Linking) VI - 44 Suppl 1 DP - 2017 Dec TI - Aging leads to impaired epicutaneous sensitization that causes attenuated allergy and pulmonary inflammation in mice. PG - 64-69 LID - 10.1111/1440-1681.12778 [doi] AB - Aging is associated with altered decreased barrier function in the skin, which can lead to different types of immunoglobulin E (IgE)-mediated sensitization to environmental allergens. Yet, allergen-specific respiratory sensitization among the elderly is not well described. The aim of this study was to investigate the effect of aging on allergic pulmonary inflammation induced by epicutaneous sensitization of mechanically irritated skin in mice. For this purpose, 6-week-, 6-month-, and 18-month-old female BALB/c mice, underwent epicutaneous sensitization with ovalbumin (OVA) or phosphate buffered saline (PBS), followed by an inhaled OVA challenge. Blood OVA-specific IgE levels measured after epicutaneous sensitization, as well as, bronchial alveolar lavage fluids (BALF) leucocyte, eosinophil, and cytokine levels measured after OVA inhalation challenge were similar among the 6-week-old (young) and 6-month-old (adult) groups. However, significantly decreased levels of systemic OVA IgE, and BALF leukocyte, eosinophil and T helper cell type 2 cytokine levels, were measured after OVA inhalation challenge in elderly (18-month-old) mice compared to the other groups of mice. In addition, interleukin-10 (IL-10), a regulatory suppressor cytokine, was more abundant in the BALF of the elderly group after epicutaneous sensitization and inhalation challenge. Our results suggest that elderly mice have a reduced allergic response to induced sensitization with OVA, possibly regulated by increased IL-10 levels. CI - (c) 2017 John Wiley & Sons Australia, Ltd. FAU - Langier, Sheila AU - Langier S AUID- ORCID: 0000-0002-7338-9665 AD - Allergy and Immunology Unit, Tel Aviv Medical Center, Tel Aviv, Israel. FAU - Benor, Shira AU - Benor S AD - Allergy and Immunology Unit, Tel Aviv Medical Center, Tel Aviv, Israel. FAU - Kadar, Laliv AU - Kadar L AD - Allergy and Immunology Unit, Tel Aviv Medical Center, Tel Aviv, Israel. FAU - Shani, Nir AU - Shani N AD - Microsurgery and Plastic Surgery Laboratory of the Plastic Surgery Department, Tel Aviv Medical Center, Tel Aviv, Israel. FAU - Etkin, Sara AU - Etkin S AD - Allergy and Immunology Unit, Tel Aviv Medical Center, Tel Aviv, Israel. FAU - Stark, Moshe AU - Stark M AD - Biochemistry Laboratory, Tel Aviv Medical Center, Tel Aviv, Israel. FAU - Bondar, Ekaterina AU - Bondar E AD - Allergy and Immunology Unit, Tel Aviv Medical Center, Tel Aviv, Israel. FAU - Aizic, Asaf AU - Aizic A AD - Department of Pathology, Tel Aviv Medical Center, Tel Aviv, Israel. FAU - Kivity, Shmuel AU - Kivity S AD - Allergy and Immunology Unit, Tel Aviv Medical Center, Tel Aviv, Israel. LA - eng PT - Comparative Study PT - Journal Article DEP - 20171019 PL - Australia TA - Clin Exp Pharmacol Physiol JT - Clinical and experimental pharmacology & physiology JID - 0425076 RN - 0 (IL10 protein, mouse) RN - 130068-27-8 (Interleukin-10) RN - 37341-29-0 (Immunoglobulin E) RN - 9006-59-1 (Ovalbumin) SB - IM MH - Administration, Cutaneous MH - Age Factors MH - Aging/*immunology MH - Animals MH - Bronchoalveolar Lavage Fluid/immunology MH - Disease Models, Animal MH - Eosinophils/immunology/metabolism MH - Female MH - Immunoglobulin E/blood/immunology MH - Interleukin-10/immunology/metabolism MH - Lung/*immunology/metabolism MH - Mice, Inbred BALB C MH - Ovalbumin/*administration & dosage/immunology MH - Pneumonia/blood/immunology/*prevention & control MH - Respiratory Hypersensitivity/blood/immunology/*prevention & control MH - Skin/*immunology/metabolism MH - Th2 Cells/immunology/metabolism OTO - NOTNLM OT - aging OT - allergy OT - epicutaneous sensitization OT - pulmonary inflammation EDAT- 2017/05/04 06:00 MHDA- 2019/06/27 06:00 CRDT- 2017/05/04 06:00 PHST- 2016/08/29 00:00 [received] PHST- 2017/04/20 00:00 [revised] PHST- 2017/04/22 00:00 [accepted] PHST- 2017/05/04 06:00 [pubmed] PHST- 2019/06/27 06:00 [medline] PHST- 2017/05/04 06:00 [entrez] AID - 10.1111/1440-1681.12778 [doi] PST - ppublish SO - Clin Exp Pharmacol Physiol. 2017 Dec;44 Suppl 1:64-69. doi: 10.1111/1440-1681.12778. Epub 2017 Oct 19.