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Postoperative placement of an anti‐fibrotic poly L‐lactide electrospun fibrous membrane after sinus surgery
Author(s) -
Zhang Tao,
Wang Wei,
Cheng Ruoyu,
Tang Ziying,
Chen Zhengming,
Cui Wenguo,
Lian Bijun,
Zheng Hongliang,
Tang Haihong
Publication year - 2020
Publication title -
international forum of allergy and rhinology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.503
H-Index - 46
eISSN - 2042-6984
pISSN - 2042-6976
DOI - 10.1002/alr.22666
Subject(s) - medicine , fibrosis , sinus (botany) , biomaterial , tumor necrosis factor alpha , fibroblast , membrane , wound healing , surgery , maxillary sinus , pathology , biomedical engineering , biochemistry , chemistry , biology , in vitro , botany , genus
Background Endoscopic sinus surgery (ESS) is used to treat chronic rhinosinusitis. However, nasal adhesions often develop postoperatively, triggered by chronic inflammation and local fibrosis. A poly L‐lactide (PLLA) electrospun microfibrous membrane is a functional biodegradable material that can be placed on the wound surface to protect the wound and prevent adhesions. Methods We divided 24 rabbits randomly into 2 groups, a control operation group (group A) and an operation+PLLA placement group (group B). We investigated the anti‐fibrotic effects of the topical biomaterial after sinus surgery. We placed PLLA fibrous membranes in the sinus cavity of group B rabbits after sinus surgery, and then evaluated changes in the mucosa and in the levels of collagen fibers, interleukin 4 (IL‐4), IL‐8, tumor necrosis factor α (TNF‐α), transforming growth factor β1 (TGF‐β1), α‐smooth muscle actin (α‐SMA), and collagen I (Col I), using morphological and molecular biological methods. Results PLLA fibrous membranes did not inhibit the synthesis of messenger RNAs (mRNAs) encoding IL‐4, IL‐8, or TNF‐α, or the protein levels, indicating that the membrane did not have an anti‐inflammatory effect. However, the membrane inhibited the synthesis of mRNAs encoding TGF‐β1, α‐SMA, and Col I, and reduced collagen production. Thus, the nanostructured membrane inhibited fibroblast proliferation. Conclusion The PLLA membrane had anti‐fibrotic effects, and may be used to prevent fibrosis and adhesions after ESS in human patients.