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Hyaluronan Improves the Healing of Experimental Tympanic Membrane PerforationsA Comparison of Preparations With Different Rheologic Properties
Claude Laurent, MD;
Sten Hellström, MD;
Erik Fellenius, PhD
Arch Otolaryngol Head Neck Surg. 1988;114(12):1435-1441.
Abstract
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• Preparations of hyaluronan at various concentrations and molecular weights were topically applied to experimental tympanic membrane (TM) perforations in the rat and their ability to improve the healing pattern was elucidated. The perforations occupied the upper posterior quadrant of the TM. Alterations in healing rate and quality of the healed TM were examined by otomicroscopy and in histologic sections. Hyaluronan enhanced the healing rate and resulted in less opacity and structural alteration of the scar area. Closure time for the TM perforations was correlated to the concentration of hyaluronan but not to its molecular weight or viscosity. Improved scar quality was obtained in the presence of hyaluronan irrespective of its rheologic properties. Hyaluronan improved the restoration of the fibrous connective tissue layer. Treatment of TM perforations in man with hyaluronan at high concentrations should be considered as an alternative to myringoplasty.
(Arch Otolaryngol Head Neck Surg 1988;114:1435-1441)
Author Affiliations
From the Departments of Anatomy (Drs Laurent and Hellström) and Otorhinolaryngology and Head and Neck Surgery (Dr Hellström), University of Ume , Sweden; the Department of Otorhinolaryngology, Central Hospital, Falun, Sweden (Dr Laurent); and the Department of Pharmacology, Pharmacia-Leo Therapeutics AB, Uppsala, Sweden (Dr Fellenius).
Footnotes
Accepted for publication April 5, 1988.
Reprint requests to the Department of Otorhinolaryngology, Central Hospital, S-791 82 Falun, Sweden (Dr Laurent).
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