Document Detail


Evaluation of esterified hyaluronic acid as middle ear-packing material.
MedLine Citation:
PMID:  11346429     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: To evaluate the efficacy of esterified hyaluronic acid (MeroGel) as a middle ear (ME)-packing material. DESIGN: Randomized controlled trial. MATERIAL: Twenty-four guinea pigs. INTERVENTION: Group 1, MeroGel-treated animals (n = 10), bilateral wounding of ME mucosa with 5 of the animals receiving the MeroGel packing in the left ME and 5 of the animals receiving MeroGel in the right ME; group 2, absorbable gelatin sponge-treated animals (n = 10), with the same experimental protocol as in group 1 except that the absorbable gelatin sponge was the packing material; group 3, untreated animals (n = 4), unilateral wounding of the left ME mucosa in 2 animals and in 2 animals in the right ME, with no packing material. Auditory brainstem recordings were performed for all groups before the ME operation and 5 days and 6 weeks after the operation. RESULTS: Auditory brainstem response recordings at postoperative day 5 showed that all ears with ME packing had hearing losses in the frequency range of 500 to 4000 Hz. The recovery of hearing acuity at postoperative week 6 was significantly better in group 1 (MeroGel-treated) guinea pigs compared with group 2 (the absorbable gelatin sponge-treated) animals. In group 2 animals, 20% of the packing material remained in the ME cavities and new bone formation was observed, while in group 1 animals, there was less packing material in the ME and no formation of new bone. CONCLUSIONS: MeroGel is a nonototoxic packing material with a high level of biocompatibility for ME mucosa; it is an effective supportive material following ME surgery and is easily expelled from the ME cavity.
Authors:
G Li; J G Feghali; E Dinces; J McElveen; T R van de Water
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Archives of otolaryngology--head & neck surgery     Volume:  127     ISSN:  0886-4470     ISO Abbreviation:  Arch. Otolaryngol. Head Neck Surg.     Publication Date:  2001 May 
Date Detail:
Created Date:  2001-05-10     Completed Date:  2001-05-31     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8603209     Medline TA:  Arch Otolaryngol Head Neck Surg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  534-9     Citation Subset:  AIM; IM    
Affiliation:
Department of Otolaryngology, Albert Einstein College of Medicine, Bronx, NY 10461, USA.
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MeSH Terms
Descriptor/Qualifier:
Animals
Biocompatible Materials / pharmacokinetics*,  toxicity
Ear, Middle / drug effects*,  injuries,  surgery
Esterification
Gelatin Sponge, Absorbable
Guinea Pigs
Hearing / drug effects
Hyaluronic Acid / pharmacology*,  toxicity
Mucous Membrane / drug effects
Random Allocation
Wound Healing / drug effects*
Chemical
Reg. No./Substance:
0/Biocompatible Materials; 9004-61-9/Hyaluronic Acid

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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