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3.
Eur Respir J ; 48(5): 1307-1319, 2016 11.
Article in English | MEDLINE | ID: mdl-27799384

ABSTRACT

The U-BIOPRED study is a multicentre European study aimed at a better understanding of severe asthma. It included three steroid-treated adult asthma groups (severe nonsmokers (SAn group), severe current/ex-smokers (SAs/ex group) and those with mild-moderate disease (MMA group)) and healthy controls (HC group). The aim of this cross-sectional, bronchoscopy substudy was to compare bronchial immunopathology between these groups.In 158 participants, bronchial biopsies and bronchial epithelial brushings were collected for immunopathologic and transcriptomic analysis. Immunohistochemical analysis of glycol methacrylate resin-embedded biopsies showed there were more mast cells in submucosa of the HC group (33.6 mm-2) compared with both severe asthma groups (SAn: 17.4 mm-2, p<0.001; SAs/ex: 22.2 mm-2, p=0.01) and with the MMA group (21.2 mm-2, p=0.01). The number of CD4+ lymphocytes was decreased in the SAs/ex group (4.7 mm-2) compared with the SAn (11.6 mm-2, p=0.002), MMA (10.1 mm-2, p=0.008) and HC (10.6 mm-2, p<0.001) groups. No other differences were observed.Affymetrix microarray analysis identified seven probe sets in the bronchial brushing samples that had a positive relationship with submucosal eosinophils. These mapped to COX-2 (cyclo-oxygenase-2), ADAM-7 (disintegrin and metalloproteinase domain-containing protein 7), SLCO1A2 (solute carrier organic anion transporter family member 1A2), TMEFF2 (transmembrane protein with epidermal growth factor like and two follistatin like domains 2) and TRPM-1 (transient receptor potential cation channel subfamily M member 1); the remaining two are unnamed.We conclude that in nonsmoking and smoking patients on currently recommended therapy, severe asthma exists despite suppressed tissue inflammation within the proximal airway wall.


Subject(s)
Asthma/physiopathology , Asthma/therapy , Bronchi/physiopathology , Inflammation/drug therapy , Acrylic Resins/chemistry , Adult , Biopsy , Bronchi/immunology , Bronchoscopy , CD4-Positive T-Lymphocytes/cytology , Case-Control Studies , Cross-Sectional Studies , Europe , Female , Humans , Immunochemistry , Male , Methacrylates/chemistry , Middle Aged , Oligonucleotide Array Sequence Analysis , Smoking , Transcriptome
4.
Res Involv Engagem ; 1: 5, 2015.
Article in English | MEDLINE | ID: mdl-29062494

ABSTRACT

This commentary talks about patient involvement in one of the biggest EU projects to date-U-BIOPRED. It describes how people and carers of people with asthma have been able to develop and drive their input and have their voice heard among the >200 healthcare professional project members. Five key principles for the success of the patient involvement group are presented: involve early, involve deeply, have patients feedback on project progress, include patients in dissemination and help patients convey their own story. This group has been used as an example for other EU-funded projects, and the patient involvement group will be maintained after the end of the project to ensure that their experience and knowledge can help develop best practice in the future.

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