Hernia

, Volume 14, Issue 4, pp 401–407 | Cite as

Activation of human mononuclear cells by porcine biologic meshes in vitro

  • S. B. Orenstein
  • Y. Qiao
  • U. Klueh
  • D. L. Kreutzer
  • Y. W. Novitsky
Original Article

Abstract

Introduction

While porcine-based biologic meshes are increasingly used for hernia repair, little data exist on tissue responses to such products. Host foreign body reaction, local inflammation, and wound healing are principally controlled by monocytes/macrophages (M/MØs). Exaggerated activation of M/MØs may deleteriously influence mesh integration and remodeling. We hypothesized that common porcine meshes induce the differential activation of M/MØs in vitro.

Materials and methods

Samples of four acellular porcine-derived meshes, CollaMend™ (CM; C.R. Bard/Davol), Permacol™ (PC; TSL/Covidien), Strattice™ (ST; LifeCell), and Surgisis® (SS; Cook Biotech), were exposed to mononuclear cells derived from the peripheral blood of six healthy subjects. Following a 7-day incubation period, supernatants were assayed for interleukin-1beta (IL-1β), interleukin-6 (IL-6), interleukin-8 (IL-8), and vascular endothelial growth factor (VEGF) using a multiplex bead-based immunoassay system. The four groups were compared using analysis of variance (ANOVA) and Student’s t-test.

Results

Each mesh type induced differential mononuclear cell activation in vitro. The mean IL-1β expressions for CM (7,195 pg/ml) and PC (4,215 pg/ml) were significantly higher compared to ST and SS (123 and 998 pg/ml, respectively; P < 0.05). Similar trends were also seen for IL-6 (range 445–70,729 pg/ml), IL-8 (range 11,640–1,045,938 pg/ml), and VEGF (range 686–7,133 pg/ml).

Conclusion

For the first time, we demonstrated that porcine meshes induce M/MØ activation in vitro. CM and PC (chemically crosslinked dermis) induced significantly higher cytokine expression compared to ST (non-crosslinked dermis) and SS (small intestine submucosa). These differences are likely related to proprietary processing methods and/or the extent of collagen crosslinking. Further understanding of immunologic effects of porcine-derived biologic meshes will not only allow for a comparison between existing products, but it may also lead to mesh modifications and improvement of their clinical performance.

Keywords

Biologic mesh Porcine Dermis Small intestine submucosa Peripheral blood mononuclear cells (PBMCs) Monocytes Cytokine Interleukin-1beta (IL-1β) Interleukin-6 (IL-6) Interleukin-8 (IL-8) Vascular endothelial cell growth factor (VEGF) In vitro 

Notes

Acknowledgment

This study was funded by institutional support from the University of Connecticut Health Center.

Conflict of interest statement

Y.W.N. has received consulting and/or speaking fees from LifeCell Corp., C.R. Bard Inc., and Covidien. The other co-authors have nothing to disclose.

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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • S. B. Orenstein
    • 1
  • Y. Qiao
    • 2
  • U. Klueh
    • 2
  • D. L. Kreutzer
    • 2
  • Y. W. Novitsky
    • 1
  1. 1.Connecticut Comprehensive Center for Hernia Repair, Department of SurgeryUniversity of Connecticut Health CenterFarmingtonUSA
  2. 2.Center for Molecular Tissue Engineering, Department of SurgeryUniversity of Connecticut School of MedicineFarmingtonUSA

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