New insights into the regulation of TGF-β/Smad and MPK signaling pathway gene expressions by nasal allergen and methacholine challenge test in asthma.

"CONFLICT OF INTEREST The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest."

"The authors of this study thank Joanna Molińska for assisting in the administrative work. Finally, we offer our acknowledgements to all of those who supported us in any aspect during the completion of this project. The study has been financed from the Polpharma Scientific Foundation, grant no. 16/XIV/2015, Poland. Michał Gabriel Panek: Conceptualization (equal); Data curation (equal); Formal analysis (equal); Funding acquisition (equal); Investigation (equal); Methodology (equal); Project administration (equal); Resources (equal); Software (equal); Supervision (equal); Validation (equal); Visualization (equal); Writing – original draft (equal); Writing – review & editing (equal). Michał Seweryn Karbownik: Formal analysis (equal); Software (equal); Validation (equal); Visualization (equal); Writing – review & editing (equal). Karol Maksymilian Górski: Formal analysis (equal); Methodology (equal). Marcelina Koćwin: Data curation (equal); Resources (equal). Grzegorz Kardas: Data curation (equal); Resources (equal); Supervision (equal). Mateusz Marynowski: Software (equal). Writing – review & editing (equal). Piotr Kuna: Writing – review & editing (equal)."