1
|
Schramm A, Jasiewicz-Honkisz B, Osmenda G, Wilk G, Siedlinski M, Sagan A, Matusik PT, Maciag J, Sliwa T, Czesnikiewicz-Guzik M, Mikolajczyk TP. Th 17 responses are not altered by natural exposure to seasonal allergens in pollen-sensitive patients. Allergy Asthma Clin Immunol 2016; 12:55. [PMID: 27799958 PMCID: PMC5078933 DOI: 10.1186/s13223-016-0157-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 10/04/2016] [Indexed: 01/22/2023] Open
Abstract
Background Allergic rhinitis affects 10–30 % of the global population and this number is likely to increase in the forthcoming years. Moreover, it commonly co-exists with allergic asthma as a chronic allergic respiratory syndrome. While the involvement of Th2 cells in allergy is well understood, alterations of pro-inflammatory Th17 responses remain poorly characterized. The aim of our study was to determine whether natural seasonal allergen exposure causes changes in T cell subset characteristics in patients with allergic rhinitis and asthma. Methods Sixteen patients with allergic rhinitis/atopic asthma (9M, 7F; age 31.8 ± 12.1) and 16 healthy controls were recruited into the study (9M, 7F; age 31.2 ± 5.3). Blood samples were collected from the patients 1–3 months before pollen season (visit 1), within 7 days of the appearance of pollen/initiation of allergic symptoms (visit 2) and 2 weeks after visit 2 following the introduction of symptomatic treatment with antihistamines (visit 3). Flow cytometry was used to assess major T cell subsets (naïve, central memory, effector memory and CD45RA+ effector) and key T cell cytokine production (IFNγ, IL-17A, TNF and IL-4) using intracellular staining. Data were analyzed using repeated measures ANOVA and paired t test. Results As expected, an increase in the percentage of IL‐4+ CD4+ cells was observed during natural pollen exposure in patients with allergic respiratory syndrome. No significant changes were observed in the production of other cytokines, including Th17 cells, which tended to be lower than in the control population but unchanged during pollen exposure. Introduction of antihistamine treatment led to only moderate changes in cytokine production from CD4 and CD8 T cells. Selective changes in CD8+ T cells were observed during natural pollen exposure including a decrease in transient cells (with features of CD45RA+ and CD45RO+ cells) and a decrease in the percentage of central memory cells in the peripheral circulation. Within the CD4 cell group the total percentage of CD45RA positive CD4 cells was increased during pollen exposure. Conclusions Th1 and Th17 responses are not altered during pollen season but allergen exposure affects T cell activation and memory cell status in patients with allergic respiratory syndrome. Electronic supplementary material The online version of this article (doi:10.1186/s13223-016-0157-6) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Agata Schramm
- Translational Medicine Laboratory, Department of Internal and Agricultural Medicine, School of Medicine, Jagiellonian University, Skarbowa 1, 31-121 Cracow, Poland
| | - Barbara Jasiewicz-Honkisz
- Translational Medicine Laboratory, Department of Internal and Agricultural Medicine, School of Medicine, Jagiellonian University, Skarbowa 1, 31-121 Cracow, Poland
| | - Grzegorz Osmenda
- Translational Medicine Laboratory, Department of Internal and Agricultural Medicine, School of Medicine, Jagiellonian University, Skarbowa 1, 31-121 Cracow, Poland
| | - Grzegorz Wilk
- Translational Medicine Laboratory, Department of Internal and Agricultural Medicine, School of Medicine, Jagiellonian University, Skarbowa 1, 31-121 Cracow, Poland
| | - Mateusz Siedlinski
- Translational Medicine Laboratory, Department of Internal and Agricultural Medicine, School of Medicine, Jagiellonian University, Skarbowa 1, 31-121 Cracow, Poland
| | - Agnieszka Sagan
- Translational Medicine Laboratory, Department of Internal and Agricultural Medicine, School of Medicine, Jagiellonian University, Skarbowa 1, 31-121 Cracow, Poland ; Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
| | - Pawel T Matusik
- Translational Medicine Laboratory, Department of Internal and Agricultural Medicine, School of Medicine, Jagiellonian University, Skarbowa 1, 31-121 Cracow, Poland
| | - Joanna Maciag
- Translational Medicine Laboratory, Department of Internal and Agricultural Medicine, School of Medicine, Jagiellonian University, Skarbowa 1, 31-121 Cracow, Poland
| | - Tomasz Sliwa
- Translational Medicine Laboratory, Department of Internal and Agricultural Medicine, School of Medicine, Jagiellonian University, Skarbowa 1, 31-121 Cracow, Poland
| | - Marta Czesnikiewicz-Guzik
- Department of Dental Prophylaxis and Experimental Dentistry, Dental School, Jagiellonian University, Cracow, Poland ; Oral Sciences Research Group, Glasgow Dental School, School of Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Tomasz P Mikolajczyk
- Translational Medicine Laboratory, Department of Internal and Agricultural Medicine, School of Medicine, Jagiellonian University, Skarbowa 1, 31-121 Cracow, Poland ; Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, UK
| |
Collapse
|
2
|
Nájera O, González C, Toledo G, López L, Cortés E, Betancourt M, Ortiz R. CD45RA and CD45RO isoforms in infected malnourished and infected well-nourished children. Clin Exp Immunol 2001; 126:461-5. [PMID: 11737063 PMCID: PMC1906241 DOI: 10.1046/j.1365-2249.2001.01694.x] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The aim of this study was to determine if the distribution in vivo of CD4(+)CD45RA(+)/CD45RO(-) (naive), CD4(+)CD45RA(+)/CD45RO(+) (Ddull) and CD4(+)CD45RO(+) (memory) lymphocytes differs in malnourished infected and well-nourished infected children. The expression of CD45RA (naive) and CD45RO (memory) antigens on CD4(+) lymphocytes was analysed by flow cytometry in a prospectively followed cohort of 15 malnourished infected, 12 well-nourished infected and 10 well-nourished uninfected children. Malnourished infected children showed higher fractions of Ddull cells (11.4 +/- 0.7%) and lower fractions of memory cells (20.3 +/- 1.7%) than the well-nourished infected group (8.8 +/- 0.8 and 28.1 +/- 1.8%, respectively). Well-nourished infected children showed increased percentages of memory cells, an expected response to infection. Impairment of the transition switch to the CD45 isoforms in malnourished children may explain these findings, and may be one of the mechanisms involved in immunodeficiency in these children.
Collapse
Affiliation(s)
- O Nájera
- Universidad Autónoma Metropolitana-Xochimilco, Departamento de Atención a la Salud, Coyoacán, México, D. F. México
| | | | | | | | | | | | | |
Collapse
|
3
|
Guerra F, Carracedo J, Solana-Lara R, Sánchez-Guijo P, Ramírez R. TH2 lymphocytes from atopic patients treated with immunotherapy undergo rapid apoptosis after culture with specific allergens. J Allergy Clin Immunol 2001; 107:647-53. [PMID: 11295653 DOI: 10.1067/mai.2001.112263] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND In atopic patients treatment with specific immunotherapy (SIT) induced a shift in the balance of T-cell immune response away from a T(H)2-type (producing mostly IL-4) in favor of a T(H)1-type T-lymphocyte response (with the preferential production of IFN-gamma). However, the mechanisms through which SIT acts are less clear. We have recently shown that allergens may induce an activation-induced cell death process in lymphocytes from SIT-treated atopic patients. OBJECTIVE This study aimed to determine whether allergen-induced apoptosis can occur in a specific subset of cells. METHODS The study was performed in lymphocytes from normal subjects and atopic patients, some of whom were treated with SIT. Cells were cultured in the presence of gramineous pollen (Lolium perenne) allergenic extracts. Cell phenotype and intracellular cytokine expression were measured by means of fluorescent mAbs. Apoptosis was measured by using terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick end-labeling. Fluorescence was analyzed in a FACScan flow cytometer, and the data were evaluated with Consort 30 software. RESULTS Our results showed that allergens induce apoptosis of lymphocytes in SIT-treated atopic patients. Apoptosis occurs mainly in T(H)2 lymphocytes with the IL-4+/CD4+ phenotype and subsequently increases the percentage of IFN-gamma(+) cells in the culture. CONCLUSION These results suggest that the shift from T(H)2 to T(H)1 induced by SIT in atopic patients may be mediated, at least in part, by the induction of an activation-induced cell death process in allergen-responder T(H)2 cells.
Collapse
Affiliation(s)
- F Guerra
- Servicio de Alergia, Hospital Universitario Reina Sofía, Avda Menéndez Pidal S/N, Córdoba 14004, Spain
| | | | | | | | | |
Collapse
|