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Development of a novel antiadhesive material, alginate flakes, ex vivo and in vivo

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Abstract

Purpose

Postoperative intra-abdominal adhesion sometimes causes significant morbidity. The aim of this study was to compare the efficacy of our newly developed antiadhesive material, alginate flakes, to the most commonly used combination of hyaluronic acid and carboxymethyl cellulose film.

Methods

Sodium alginate was formed into a gel, powder, or flakes. In the ex vivo study, these different alginate forms were attached onto pig skin and their antisolubility properties in saline and attachment stability were compared. In the in vivo study, a rat surgical adhesion model was used to study the properties of the alginates, and the rats were euthanized on day 14 after surgery. The efficacy of the antiadhesive materials was evaluated using an adhesion scoring system, and the locations that were treated with the antiadhesives were histologically examined.

Results

In the alginate groups, the alginate flakes were superior with respect to the antisolubility and the attachment stability ex vivo as well as with respect to the antiadhesive efficacy in vivo. The adhesion score was almost the same as that observed in the alginate flake and cellulose film groups.

Conclusions

We developed an alginate flake material and demonstrated its antiadhesive effects both ex vivo and in vivo. This is the first reported study using this flake-like material, which has a unique characteristic in that it can be applied by spraying in compressed air. Alginate flakes may therefore be especially useful in the field of laparoscopic surgery.

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Authors and Affiliations

  1. Department of Surgery, Juntendo University Urayasu Hospital, 2-1-1 Tomioka, Urayasu, Chiba, 279-0021, Japan

    Yoshinori Hirasaki, Masaki Fukunaga & Akio Kidokoro

  2. Medical Life System, Faculty of Life and Medical Science, Doshisha University, Kyotanabe, Japan

    Ayumi Hashimoto, Hiroyuki Tsujimoto & Akeo Hagiwara

  3. Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan

    Tatsuo Nakamura

Authors
  1. Yoshinori Hirasaki
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  2. Masaki Fukunaga
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  3. Akio Kidokoro
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  4. Ayumi Hashimoto
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  5. Tatsuo Nakamura
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  6. Hiroyuki Tsujimoto
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  7. Akeo Hagiwara
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Hirasaki, Y., Fukunaga, M., Kidokoro, A. et al. Development of a novel antiadhesive material, alginate flakes, ex vivo and in vivo. Surg Today 41, 970–977 (2011). https://doi.org/10.1007/s00595-010-4410-1

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  • DOI: https://doi.org/10.1007/s00595-010-4410-1

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