Browsing by Author "Bond, Jennifer"

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    ItemOpen Access
    A review of scar scales and scar measuring devices.
    (Eplasty, 2010-06-21) Fearmonti, Regina; Bond, Jennifer; Erdmann, Detlev; Levinson, Howard

    Objective

    Pathologic scarring affects millions of people worldwide. Quantitative and qualitative measurement modalities are needed to effectively evaluate and monitor treatments.

    Methods

    This article reviews the literature on available tools and existent assessment scales used to subjectively and objectively characterize scar.

    Results

    We describe the attributes and deficiencies of each tool and scale and highlight areas where further development is critical.

    Conclusion

    An optimal, universal scar scoring system is needed in order to better characterize, understand and treat pathologic scarring.
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    ItemOpen Access
    Characterization of the Foreign Body Response to Common Surgical Biomaterials in a Murine Model.
    (European journal of plastic surgery, 2017-11) Ibrahim, Mohamed; Bond, Jennifer; Medina, Manuel A; Chen, Lei; Quiles, Carlos; Kokosis, George; Bashirov, Latif; Klitzman, Bruce; Levinson, Howard
    BACKGROUND:Implanted biomaterials are subject to a significant reaction from the host, known as the foreign body response (FBR). We quantified the FBR to five materials following subcutaneous implantation in mice. MATERIALS AND METHODS:Polyvinyl alcohol (PVA) and silicone sheets are considered highly biocompatible biomaterials and were cut into 8mm-diameter disks. Expanded PTFE (ePTFE)and polypropylene are also widely used biocompatible biomaterials and were cut into 2cm-long cylinders. Cotton was selected as a negative control material that would invoke an intense FBR, was cut into disks and implanted. The implants were inserted subcutaneously into female C57BL/6 mice. On post-implantation days 14, 30, 60, 90 and 180, implants were retrieved. Cellularity was assessed with DAPI stain, collagen with Masson's trichrome stain. mast cells with toluidine-blue, macrophages with F4/80 immunohistochemical-stain, and capsular thickness and foreign body giant cells with hematoxylin & eosin. RESULTS:DAPI revealed a significantly increased cellularity in both PVA andsilicone, and ePTFE had the lowest cell density. Silicone showed the lowest cellularity at d14 and d90 whereas ePTFE showed the lowest cellularity at days 30, 60, and 180. Masson's trichrome staining demonstrated no apparent difference in collagen. Toluidine blue showed no differences in mast cells. There were, however, fewer macrophages associated with ePTFE. On d14, PVA had highest number of macrophages, whereas polypropylene had the highest number at all time points after d14. Giant cells increased earlier and gradually decreased later. On d90, PVA exhibited a significantly increased number of giant cells compared to polypropylene and silicone. Silicone consistently formed the thinnest capsule throughout all time points. On d14, cotton had formed the thickest capsule. On d30 polypropylenehas formed thickest capsule and on days 60, 90 and 180, PVA had formed thickest capsule. CONCLUSION:These data reveal differences in capsule thickness and cellular response in an implant-related manor, indicating that fibrotic reactions to biomaterials are implant specific and should be carefully considered when performing studies on fibrosis when biomaterials are being used.