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Lee W, Kim SH. Transumbilical Silicone Breast Augmentation: A 13-Year Experience and 5-Year Analysis. Aesthetic Plast Surg 2024:10.1007/s00266-024-03850-4. [PMID: 38326499 DOI: 10.1007/s00266-024-03850-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 01/02/2024] [Indexed: 02/09/2024]
Abstract
BACKGROUND Transumbilical breast augmentation (TUBA) with saline implants has been considered a safe and efficient technique for decades. However, because silicone implants are more popular than saline ones, TUBA with saline implants is not widely performed. In 2014, we published a report on transumbilical breast augmentation using silicone cohesive gel implants. As we have performed transumbilical silicone breast augmentation (TUSBA) for 13 years with slight modifications, this study aimed to describe this novel technique and present accompanying patient outcomes over 5 years. METHODS We enrolled patients desiring breast augmentation at a single center. The preoperative design was initially determined with the patients in standing positions before they underwent surgery under general anesthesia in a supine position. RESULTS Between January 2018 and December 2022, 69 women and one man underwent TUSBA at a single center. All patients underwent cohesive gel silicone implantation in the subpectoral pocket. The implant size varied from 225 to 300 mL (average 272 mL) because two patients underwent surgery with implants of different sizes due to breast asymmetry. All patients were satisfied with the surgery outcome except one who was dissatisfied because of abdominal bulging. CONCLUSIONS TUSBA offers advantages such as minimal scarring and unrestricted arm movement; thus, it can be an alternative option for patients seeking breast augmentation. LEVEL OF EVIDENCE IV This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors https://www.springer.com/00266 .
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Affiliation(s)
- Won Lee
- Yonsei E1 Plastic Surgery Clinic, Anyang, South Korea
| | - Seong Hwan Kim
- Department of Plastic and Reconstructive Surgery, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, 1 Singillo, Yongdeongpo-gu, Seoul, 07441, Korea.
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2
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Munhoz AM, Chala L, Melo GD, Azevedo Marques Neto AD, Tucunduva T. Clinical and MRI Evaluation of Silicone Gel Implants with RFID-M Traceability System: A Prospective Controlled Cohort Study Related to Safety and Image Quality in MRI Follow-Up. Aesthetic Plast Surg 2021; 45:2645-2655. [PMID: 34075463 DOI: 10.1007/s00266-021-02355-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 05/09/2021] [Indexed: 01/01/2023]
Abstract
BACKGROUND SmoothSilk implants (SSI) are the first generation of implants to incorporate a radio-frequency identification device (RFID-M), a non-invasive traceability system. Although the RFID-M is considered compatible with magnetic resonance imaging (MRI), the size of the artifact and its influence on breast tissue vary. This prospective study assessed safety and MRI issues in a cohort of breast reconstruction patients. METHODS Forty-four SSI were used for breast reconstruction in patients undergoing treatment for breast cancer. All patients were evaluated for magnetic field interactions, MRI-related heating and artifacts in a 1.5-T MRI unit using standard T1/T2-weighted sequences utilized in clinical assessment of breast tissue/implants. RESULTS Mean patient age was 41.5 years (27-53ys) and body mass index was 28+-6.44 kg/m2. In 18/22 patients (81.8%), mastectomies were unilateral. No patients reported local heat/discomfort. All implants showed RFID-M-related artifacts with an estimated mean volume in T1 of 42.9cm3 (26.2-63.6cm3; SD±8.6 and 95% CI, 40.37-45.45) and in T2 of 60.5cm3 (35.4-97.2cm3; SD±14.7 and 95% CI, 56.29-65.01). Artifact volume was smaller in T1 than in T2, to a statistically significant degree (p <0.001). There were no statistically significant differences in artifact volume according to surgical indication, breast side or implant volume. There were 4/44 (9%) cases of minor rotation (<45°). In all cases, adequate analysis of the breast tissue was performed. CONCLUSIONS The results demonstrate that SSI with RFID-M technology presented an artifact volume of 42.9cm3 and 60.5cm3 in T1 and T2 images, respectively. Our findings provide detailed information on the quality and location of MRI artifacts in a reconstructed cohort which can help guide clinical decision-making for patients. To our knowledge, this is the first time RFID-M breast implants have been prospectively evaluated for clinical and MRI issues in a cohort of reconstructive patients. LEVEL OF EVIDENCE IV This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Affiliation(s)
- Alexandre Mendonça Munhoz
- Breast Surgery Group, Plastic Surgery Division, Rua Mato Grosso, 306 cj.1706 Higienópolis ZIP, São Paulo, SP, 01239-040, Brazil.
- Plastic Surgery Department - Hospital Moriah, Hospital Sírio-Libanês, Rua Mato Grosso, 306 cj.1706 Higienópolis ZIP, São Paulo, SP, 01239-040, Brazil.
- Post-Graduation Course Hospital Sírio-Libanês, São Paulo, Brazil.
| | - Luciano Chala
- Department of Breast Radiology, Fleury Imaging Center, São Paulo, Brazil
| | - Giselle de Melo
- Department of Breast Radiology, Fleury Imaging Center, São Paulo, Brazil
| | | | - Tatiana Tucunduva
- Department of Breast Radiology, Fleury Imaging Center, São Paulo, Brazil
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3
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Khakbaz E, Lang C, Lelkaitis G, Grønhøj C. Late migration of silicon as a complication to breast transplant rupture: Case report and literature review. Int J Surg Case Rep 2021; 85:106241. [PMID: 34333256 PMCID: PMC8346674 DOI: 10.1016/j.ijscr.2021.106241] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 07/21/2021] [Accepted: 07/24/2021] [Indexed: 11/24/2022] Open
Abstract
Silicone implants have been used for breast augmentations, both cosmetically and in reconstructive surgery since the 1960s. Rupture of breast implants and silicone migration is a well-known complication. In this case report and literature review, we present a case of a 53-year-old woman with bilateral cosmetic silicone gel breast implant in 1986, and a replacement with saline gel in 2005. The patient had no breast complaints and observed no change in breast volume during this period. In 2020, silicone was randomly identified in a right-sided cervical lymph node in an attempt to remove suspicious lymphadenopathy. The source of the silicone is still doubted; that is, it is not known if the silicone originated from the saline implant or the silicone gel implant. In our literature review, we find that distant migration of silicone and lymphadenopathy have occurred for silicone breast implants although very rare for saline gel breast implants. A case of cervical lymphadenopathy caused by silicone breast migration is described. The patient had primarily long-standing silicone gel breast implant and has saline breast implant afterwards. The origin of the silicone conglomerate in the cervical lymph node remains unknown.
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Affiliation(s)
- Elham Khakbaz
- Department of Head and Neck Surgery, Rigshospitalet, Denmark
| | - Christian Lang
- Department of Plastic Surgery, Herlev University Hospital, Denmark
| | | | - Christian Grønhøj
- Department of Otorhinolaryngology and Maxillofacial Surgery, Zealand University Hospital, Køge, Denmark.
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4
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Diehm YF, Jost Y, Kotsougiani-Fischer D, Haug V, Splinter M, Häring P, Berger MR, Debus J, Kneser U, Fischer S. The Treatment of Capsular Contracture Around Breast Implants Induced by Fractionated Irradiation: The Collagenase of the Bacterium Clostridium Histolyticum as a Novel Therapeutic Approach. Aesthetic Plast Surg 2021; 45:1273-1281. [PMID: 32968820 DOI: 10.1007/s00266-020-01970-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 09/07/2020] [Indexed: 11/24/2022]
Abstract
BACKGROUND Irradiation therapy limits the utilization of silicone implants for breast reconstruction due to a significant risk for capsular contracture. The injection of the collagenase of the bacterium Clostridium histolyticum (CCH) might trivialize this risk by providing a minimal-invasive treatment option by capsular contracture degradation. However, efficacy in degrading breast implant capsules induced by fractionated irradiation remains unclear. METHODS Twenty-four rats in three groups received miniature silicone implants in a submuscular pocket. After 3D dose calculation and treatment field definition, rats of two groups underwent fractionated radiotherapy (6 × 8 Gy) using a linear accelerator. A third group served as control. On day 120, one irradiated group received injections of 0.3 mg/ml collagenase. Administration of plain solvent solution served as control in the two other groups. Outcome parameters included CT-imaging, histology, vessel wall analysis, immunohistochemistry, chemical collagen quantification and gene expression analysis. RESULTS Fractioned irradiation leads to a significant increase in collagen deposition around silicone implants with higher capsule thickness and collagen density when comparing all groups. Additionally, significant alterations of collagen fiber deposition were evident. Vessel wall thickness was significantly increased after radiotherapy. The injection of collagenase led to a significant reduction of capsule thickness, collagen density and content. However, the collagenase application induced a significant overexpression of TGFβ1. No side effects were monitored. CONCLUSIONS The CCH proved to be a safe and effective approach to degrade capsule tissue induced by fractionated irradiation in an animal model. This may pave its way for clinical application in implant-based breast reconstruction patients. LEVEL OF EVIDENCE This journal requires that authors assign a level of evidence to each submission to which Evidence-Based Medicine rankings are applicable. This excludes Review Articles, Book Reviews, and manuscripts that concern Basic Science, Animal Studies, Cadaver Studies, and Experimental Studies. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Affiliation(s)
- Yannick F Diehm
- Department of Hand-, Plastic and Reconstructive Surgery, Burn Trauma Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwig-Guttmann-Strasse 13, 67071, Ludwigshafen, Germany
- Department of Surgery, Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, 75 Francis St, Boston, 02115, USA
| | - Yanic Jost
- Department of Hand-, Plastic and Reconstructive Surgery, Burn Trauma Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwig-Guttmann-Strasse 13, 67071, Ludwigshafen, Germany
| | - Dimitra Kotsougiani-Fischer
- Department of Hand-, Plastic and Reconstructive Surgery, Burn Trauma Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwig-Guttmann-Strasse 13, 67071, Ludwigshafen, Germany
| | - Valentin Haug
- Department of Hand-, Plastic and Reconstructive Surgery, Burn Trauma Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwig-Guttmann-Strasse 13, 67071, Ludwigshafen, Germany
- Department of Surgery, Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, 75 Francis St, Boston, 02115, USA
| | - Mona Splinter
- German Cancer Research Center (DKFZ), Im Neuenheimer Feld 223, 69120, Heidelberg, Germany
| | - Peter Häring
- German Cancer Research Center (DKFZ), Im Neuenheimer Feld 223, 69120, Heidelberg, Germany
| | - Martin R Berger
- Toxicology and Chemotherapy Unit, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120, Heidelberg, Germany
| | - Jürgen Debus
- Department of Clinical Radiology, University of Heidelberg, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
| | - Ulrich Kneser
- Department of Hand-, Plastic and Reconstructive Surgery, Burn Trauma Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwig-Guttmann-Strasse 13, 67071, Ludwigshafen, Germany
| | - Sebastian Fischer
- Department of Hand-, Plastic and Reconstructive Surgery, Burn Trauma Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwig-Guttmann-Strasse 13, 67071, Ludwigshafen, Germany.
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5
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Abstract
Creating pleasing breast aesthetics after an explantation can be challenging, especially when performed with a total capsulectomy. The necessity of a capsulectomy for a variety of breast issues is not completely agreed on and can increase adverse events, patient morbidity, and cost of the operation and often impairs the final aesthetic result. In this article, an algorithm for the management of explantation patients provides a framework for treatment of the capsule and the breast to optimize outcomes.
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Oliveira ACP, Maino M, Zanin EM, de Carli L, Duarte DW, Collares MVM. Breast Implants Follow-up: Results of a Cross-Sectional Study on Patients Submitted to MRI Breast Examinations. Aesthetic Plast Surg 2021; 45:27-34. [PMID: 32959128 DOI: 10.1007/s00266-020-01962-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 09/05/2020] [Indexed: 10/23/2022]
Abstract
INTRODUCTION Breast implants follow-up with any type of examination is often neglected; this may cause an error or delay in the diagnosis of complications prosthesis-related such as BIA-ALCL. This study aims to better understand adequate follow-up criteria. METHOD All female patients undergoing aesthetic breast augmentation and breast MRI in its follow-up conducted from April 2006 to December 2019 were included in this study. The variables analyzed were age, breast implant surgery date, time with the implant, reason for the examination, and the final examination report. A logistic regression analysis was conducted to search for the predictors of positive findings in MRI. A Cox Regression analysis and cumulative risk curves, controlled by age, was performed to investigate the relationship between time with implants and the risk of positive findings in MRI. RESULTS The patients submitted to MRI had complaints in 29.6% of cases, with pain being the most common, 13.9% of cases. In logistic regression analysis, time with the implant was associated with a higher risk of positive findings in univariate analysis (OR = 1.07, p = 0.036), but not in multivariate analysis. Both pain and breast form changes were independent predictors for positive findings in MRI, OR = 2.79, p = 0.04, and OR = 16.98, p < 0.001, respectively. The cumulative risk of positive findings in MRI increased considerably only after 10 years of implantation. CONCLUSIONS Time with breast implants may be associated with a higher risk of changes in breast MRI examinations, although this relationship was not significant in multivariate logistic regression analysis. The cumulative risk for positive findings seems to increase considerably only after 10 years of implantation. This study draws attention to the paramount importance of follow-up with a clinical breast examination. Despite time with implants or patients' age, both pain and breast form changes were the most important predictors for MRI alterations. LEVEL OF EVIDENCE IV This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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7
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Naur TMH, Bodtger U, Nessar R, Salih GN, Clementsen PF. Asymptomatic silicone induced granulomatous disease diagnosed by endobronchial ultrasound with real-time guided transbronchial needle aspiration (EBUS-TBNA). Respir Med Case Rep 2020; 30:101102. [PMID: 32551219 PMCID: PMC7289761 DOI: 10.1016/j.rmcr.2020.101102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 04/11/2020] [Accepted: 05/20/2020] [Indexed: 10/25/2022] Open
Abstract
Silicone from ruptured breast implants can cause lung symptoms mimicking cancer. The diagnosis may be established by transbronchial lung biopsy or surgery. We report a case of asymptomatic silicone induced granulomatous reaction in the lungs and mediastinal lymph nodes diagnosed with EBUS-TBNA. We conclude that this differential diagnosis should be kept in mind even in an asymptomatic patients and that EBUS-TBNA should be considered.
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Affiliation(s)
| | - Uffe Bodtger
- Department of Internal Medicine, Zealand University Hospital, Roskilde, Denmark.,Department of Respiratory Medicine, Naestved Hospital, Naestved, Denmark.,Institute of Regional Health Research, University of Southern Denmark, Odense, Denmark
| | - Rafi Nessar
- Department of Internal Medicine, Zealand University Hospital, Roskilde, Denmark
| | - Goran Nadir Salih
- Department of Internal Medicine, Zealand University Hospital, Roskilde, Denmark
| | - Paul Frost Clementsen
- Department of Internal Medicine, Zealand University Hospital, Roskilde, Denmark.,Copenhagen Academy for Medical Education and Simulation (CAMES), Rigshospitalet, Copenhagen, University of Copenhagen, Denmark.,Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
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8
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Wang X, Zhang J, Chen W, Tang Y, Zhou Y, Chen Y, Huang Y, Liu D. Study on the Effects of Estradiol in Staphylococcus epidermidis Device-Related Capsule Formation. Aesthetic Plast Surg 2020; 44:558-569. [PMID: 31832737 DOI: 10.1007/s00266-019-01567-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 11/29/2019] [Indexed: 10/25/2022]
Abstract
BACKGROUND Capsular contracture, mainly caused by Staphylococcus epidermidis (S. epidermidis) biofilm formation, is a complex problem for breast cancer patients who undergo surgical prosthetic breast reconstruction. Estradiol has been reported to be involved in the formation of bacterial biofilms. Thus, the underlying mechanism of estradiol in capsular contracture needs to be investigated. METHODS Biofilm-related gene expressions were measured by qRT-PCR after sterilizing the silicone with bacterial suspension and E2 treatment in vitro. Rat models were established with bilateral ovariectomy operations and estradiol subcutaneous injections. The effects of estradiol on capsular contracture were detected by monitoring serum estradiol levels, bacterial infection rate in organs, biofilm formation and capsular contracture in vivo; inflammatory factors in vivo were examined as well. Biofilm on the silicone implants was observed under a scanning electron microscope. RESULTS Both positive regulatory genes and negative regulatory genes were increased by the high concentration of estradiol, suggesting that estradiol can promote the formation of biofilm by not only positive but also negative regulations. High estradiol levels increased bacterial infection rate in organs, biofilm formation and capsular contracture. Further, high estradiol caused a large number of inflammatory cells to infiltrate and caused serious inflammatory reactions that aggravate the immune imbalances of the host. CONCLUSION High estradiol levels contribute to increasing capsular contracture caused by S. epidermidis biofilm formation. NO LEVEL ASSIGNED This journal requires that authors assign a level of evidence to each submission to which Evidence-Based Medicine rankings are applicable. This excludes Review Articles, Book Reviews, and manuscripts that concern Basic Science, Animal Studies, Cadaver Studies, and Experimental Studies. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266.
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Jiménez-Heffernan JA, Muñoz-Hernández P, Bárcena C. Kikuchi-Fujimoto Disease-Like Inflammatory Reaction in a Silicone Breast Implant Seroma. Acta Cytol 2020; 64:386-389. [PMID: 31962314 DOI: 10.1159/000505253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 12/05/2019] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Kikuchi-Fujimoto disease (KFD) may have an autoimmune etiology and some cases have been associated with silicone breast implants. Cytomorphologic features of the disease have been well characterized by fine-needle aspiration of lymph nodes. They are so specific as to permit a precise cytologic diagnosis. Cytologic features have not been reported in fluid specimens. CASE A 33-year-old female presented with a unilateral periprosthetic silicone breast seroma. The fluid was drained, and cytological analysis revealed numerous lymphocytes with no neutrophils, karyorrhectic nuclear debris, and peculiar histiocytes with eccentrically located nuclei showing a crescentic shape. Many of those histiocytes showed intracellular apoptotic debris. CONCLUSION A Kikuchi disease-like inflammatory reaction is possible not only in axillary and cervical lymph nodes of patients with silicone breast implants but also in breast seromas. There is still not enough evidence to establish if there is an association between KFD and breast implants. A detailed cytologic examination of periprosthetic silicone breast seromas may help answer this question. In any case, pathologists must be aware of this possibility. Cytologic features are characteristic enough to permit differentiation from breast implant-associated anaplastic large-cell lymphoma.
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Affiliation(s)
- José A Jiménez-Heffernan
- Department of Pathology, University Hospital La Princesa, Madrid, Spain,
- Department of Pathology, Synlab Pathology, Madrid, Spain,
| | | | - Carmen Bárcena
- Department of Pathology, University Hospital 12 de Octubre, Madrid, Spain
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10
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Diehm YF, Hirche C, Berger MR, Heil J, Golatta M, Kotsougiani D, Pomahac B, Kneser U, Fischer S. The Collagenase of the Bacterium Clostridium histolyticum in the Treatment of Irradiation-Induced Capsular Contracture. Aesthetic Plast Surg 2019; 43:836-44. [PMID: 30456640 DOI: 10.1007/s00266-018-1267-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 11/04/2018] [Indexed: 10/27/2022]
Abstract
BACKGROUND Irradiation therapy is an important pillar in the treatment of breast cancer. However, it can trigger capsular fibrosis, the most significant complication of implant-based breast reconstruction. As collagen is the main component of fibrotic capsules, the collagenase of the bacterium Clostridium histolyticum poses a potential treatment option for this pathological condition. METHODS Thirty-six rats received miniature silicone implants on their backs. On day 1, the implant sites of two groups were irradiated with 10 Gy. On day 120, one irradiated group received collagenase injections into the implant pockets (n = 12). Non-irradiated (n = 12) and irradiated capsules (n = 12) were injected with plain solvent solution serving as controls. Data were analyzed by means of in vivo imaging, histology, immunohistochemistry and gene expression analysis. RESULTS Compared with both controls, the injection of collagenase led to significantly thinner capsules. This was verified by in vivo imaging and histology. Although irradiation provoked alterations in capsule collagen structure and vessel wall thickness, the application of collagenase resulted in a significant reduction of collagen density. This was accompanied by an up-regulation of VEGF-A gene expression. Of note, hematoma formation inside the implant pocket occurred in two cases after collagenase injection. CONCLUSIONS The collagenase of the bacterium Clostridium histolyticum is effective in degrading irradiation-induced capsular fibrosis around silicone implants. Hematoma formation occurred most likely because of irradiation-induced alterations in vessel wall architecture and capsule vascularization. Further studies need to be performed to address the clinical safety of this novel treatment option.
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Martínez Bocanegra MA, Bayod Lopez J, Vidal-Lesso A, Becerro de Bengoa Vallejo R, Lesso-Arroyo R. Structural interaction between bone and implants due to arthroplasty of the first metatarsophalangeal joint. Foot Ankle Surg 2019; 25:150-157. [PMID: 29409292 DOI: 10.1016/j.fas.2017.10.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 09/26/2017] [Accepted: 10/02/2017] [Indexed: 02/04/2023]
Abstract
BACKGROUND Currently, the metatarsophalangeal joint replacement through a restorative arthroplasty, where implants are used, is a viable invasive surgical medical procedure in the treatment of severe cases of osteoarthritis in this joint, better known as hallux rigidus. However, few things are known about the postoperative complications that implants can cause on the joint, like Swanson and Tornier implants.Research in this field can provide a valuable information that would help the specialist surgeon in the decision-making during the selection of the more suitable joint implant in each patient, as well as the redesign of the devices, to make them more efficient, durable and biocompatible with the human body. METHODS The aim of this work is to perform a structural biomechanical analysis of a restorative arthroplasty of the first metatarsophalangeal joint, and to analyze the interaction between bone and medical grade silicone implants. For that, a simulation of a foot with Swanson and Tornier joint implants were performed to evaluate the stress/strain distribution during a critical stage (toe-off). RESULTS AND CONCLUSIONS Principal stresses obtained for the first metatarsal with both implants suggest that failure is induced in this bone because, values exceed (up to 136.84% for Swanson model) the tensile strength reported for phalange trabecular bone, which may be related to osteolysis. Stress and strain values obtained in this work suggest that arthroplasty surgery with Swanson implant is more likely to cause postoperative complications versus Tornier implant.
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Affiliation(s)
| | - Javier Bayod Lopez
- Group of Structural Mechanics and Materials Modeling (GEMM), Aragon Institute of Engineering Research (I3A), Universidad de Zaragoza, Spain
| | - A Vidal-Lesso
- Department of Mechanical Engineering, Universidad de Guanajuato-DICIS, Comunidad de Palo Blanco, Carretera Salamanca-Valle de Santiago Km 3.5+1.8, C.P. 36880, Salamanca, Guanajuato, Mexico.
| | | | - Raúl Lesso-Arroyo
- Department of Mechanical Engineering, Instituto Tecnologico de Celaya, Mexico
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12
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Abstract
BACKGROUND Simultaneous augmentation-mastopexy is a particularly tricky operation with a considerable reoperation rate. The pectoralis muscle sling has proven to be a suitable alternative technique for long-term results in breast parenchyma suspension without silicone implants. This study aims to propose a promising approach to simultaneous augmentation-mastopexy revisional surgery using an inverted dual-plane technique acting as a muscular sling. METHODS A 10-year historic cohort was conducted to obtain the following variables from our preexisting database: age, preoperative measurements, operative technicalities, implant details, time from procedure to revision, complications, and outcomes. RESULTS Twenty-six patients assessed after the initial postoperative year were analyzed. Review of this series of patients revealed a revision rate of 3.8% and overall rate of morbidity of 11.5%. CONCLUSION Simultaneous augmentation-mastopexy using an inverted dual-plane technique acting as a muscular sling is a reliable and safe procedure. Review of this series of patients revealed low rates of morbidity and reoperation need. LEVEL OF EVIDENCE IV This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Affiliation(s)
- Denis Souto Valente
- Graduate Program in Medicine and Health Sciences School of Medicine PUCRS, Antônio Carlos Berta 475 - 7th Floor, Porto Alegre, RS, 91340-020, Brazil.
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13
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Niechajev I, Krag C. Calf Augmentation and Restoration: Long-Term Results and the Review of the Reported Complications. Aesthetic Plast Surg 2017; 41:1115-31. [PMID: 28488211 DOI: 10.1007/s00266-017-0885-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2017] [Accepted: 04/18/2017] [Indexed: 10/19/2022]
Abstract
BACKGROUND Augmentation or reconstruction of the calves is indicated in patients with thin legs, for bodybuilders, or when there is a defect after an injury or illness. The principle of placing implants under the investing crural fascia was worked out in the 1980s. The senior author (I.N.) introduced many technical modifications and improvements for this operation, among them the new instrument, an inserter for the calf implants. Presented patient material is unique in that the more challenging reconstructive cases almost equal the numbers of the aesthetic cases. METHODS During the years 1991 through 2016, 50 patients underwent 60 calf contour corrections. Indications were aesthetic in 23 patients, six were bodybuilders, and 21 underwent lower leg reconstruction because of deformity caused by illness. RESULTS According to evaluation by the surgeon, excellent-to-good results were obtained in 30 out of 37 followed patients. Patients rated their results as very good (18), good (10), acceptable (7) and bad (2). One 28-year-old professional bodybuilder sustained acute anterior compartment syndrome in one leg. Implants were removed 16 h after surgery, but he developed ischaemia in the anterior compartment leading to the necrosis of muscles. After several surgical operations, including microsurgical transfer of the innervated central caput of the quadriceps femoris muscle, he could resume his bodybuilding activities. Other complications were minor and manageable. CONCLUSION Calf augmentation, performed properly, has evolved to be a safe, efficient and aesthetically pleasing operation. The possibility of acute compartment syndrome should be kept in mind. LEVEL OF EVIDENCE IV This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Fieschi S, Saffarini M, Manzi L, Fieschi A. Mid-term outcomes of first metatarsophalangeal arthroplasty using the Primus FGT double-stemmed silicone implants. Foot Ankle Surg 2017; 23:142-147. [PMID: 28865580 DOI: 10.1016/j.fas.2016.11.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 11/04/2016] [Accepted: 11/14/2016] [Indexed: 02/04/2023]
Abstract
BACKGROUND Silicone implants for first metatarsophalangeal (MTP-1) arthroplasty are regaining popularity, though most studies have long inclusion periods, or short follow-up. The authors aimed to report mid-term outcomes of a cohort that received a third-generation MTP-1 implant at minimum follow-up of 5 years. METHODS The authors evaluated 70 MTP-1 arthroplasties performed in 64 patients using the Primus™ Flexible Great Toe implant. The indications were hallux rigidus of grade II (10%) and grade III (87.1%) or revision surgery (2.9%). RESULTS All patients completed clinical and radiographic assessments at 83.5 months (range, 62-114). There were no revisions or reoperations and the AOFAS-HMI score was 88.9±9.1 (median, 90; range, 67-100). Metatarsalgia was 'absent' in 47.1%, 'mild' in 41.1%, 'moderate' in 7.1% and 'severe' in 1.4%. CONCLUSION This study reported excellent mid-term clinical outcomes and survival rates of a third generation MTP-1 arthroplasty design and confirmed findings of recent studies regarding efficacy of silicone double-stemmed implants. LEVEL OF EVIDENCE Level IV case series.
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Affiliation(s)
- Stefano Fieschi
- Department of Orthopaedic Surgery, Casa di Cura Villa Berica, Via Giuseppe Capparozzo, 10, 36100 Vicenza, Italy.
| | - Mo Saffarini
- Department of Medical Technology, Accelerate Innovation Management SA, 4-6 rue de Hollande, 1204 Geneva, Switzerland.
| | - Luigi Manzi
- IRCCS Istituto Ortopedico Galeazzi, Via Riccardo Galeazzi, 4, 20161 Milan, Italy.
| | - Arrigo Fieschi
- Department of Orthopaedic Surgery, Casa di Cura Villa Berica, Via Giuseppe Capparozzo, 10, 36100 Vicenza, Italy.
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Kim BH, Park M, Park HJ, Lee SH, Choi SY, Park CG, Han SM, Heo CY, Choy YB. Prolonged, acute suppression of cysteinyl leukotriene to reduce capsular contracture around silicone implants. Acta Biomater 2017; 51:209-219. [PMID: 28087482 DOI: 10.1016/j.actbio.2017.01.033] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Revised: 12/30/2016] [Accepted: 01/10/2017] [Indexed: 12/19/2022]
Abstract
We hypothesize that periodically early, local suppression of cysteinyl leukotrienes (CysLTs), which are potent inflammatory mediators, can reduce the fibrotic capsular contracture around silicone implants. We tested this hypothesis with the silicone implants enabled with the sustained release of montelukast, a CysLT receptor antagonist, for 3 and 15days. In this work, we inserted each of the distinct implants into the pocket of the subpanniculus carnosus plane of living rats and performed histological and immunofluorescent (IF) analyses of the tissues biopsied at predetermined periods for 12weeks after implant insertion. The implants with montelukast exhibited significantly reduced polymorphonuclear leukocytes (i.e., PMNs), implying a concurrent reduction of CysLT. This effect was more prominent after long-term local montelukast exposure. Thus, fewer fibroblasts were recruited, thereby reducing transforming growth factor (TGF)-β and myofibroblasts in the tissue around the implant. Therefore, the fibrotic capsule formation, which was assessed using the capsule thickness and collagen density, decreased along with the myofibroblasts. Additionally, the tissue biopsied at the experimental end point exhibited significantly decreased mechanical stiffness. STATEMENT OF SIGNIFICANCE Capsular contracture is troublesome, making the tissues hardened around the silicone implant. This causes serious pain and discomfort to the patients, often leading to secondary surgery for implant replacement. To resolve this, we suggest a strategy of long-term, local suppression of cysteinyl leukotriene, an important mediator present during inflammation. For this, we propose a silicone implant abled to release a drug, montelukast, in a sustained manner. We tested our drug-release implant in living animals, which exhibited a significant decrease in capsule formation compared with the intact silicone implant. Therefore, we conclude that the sustained release of montelukast at the local insertion site represents a promising way to reduce capsular contracture around silicone implants.
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Affiliation(s)
- Byung Hwi Kim
- Department of Biomedical Engineering, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea
| | - Min Park
- Interdisciplinary Program in Bioengineering, College of Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Hyo Jin Park
- Department of Pathology, Seoul National University Bundang Hospital, Seongnam 13620, Republic of Korea
| | - Seung Ho Lee
- Institute of Medical & Biological Engineering, Medical Research Center, Seoul National University, Seoul 03080, Republic of Korea
| | - Sung Yoon Choi
- Interdisciplinary Program in Bioengineering, College of Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Chun Gwon Park
- Institute of Medical & Biological Engineering, Medical Research Center, Seoul National University, Seoul 03080, Republic of Korea
| | - Su Min Han
- Department of Biomedical Engineering, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea
| | - Chan Yeong Heo
- Department of Plastic and Reconstructive Surgery, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea; Department of Plastic and Reconstructive Surgery, Seoul National University Bundang Hospital, Seongnam 13620, Republic of Korea.
| | - Young Bin Choy
- Department of Biomedical Engineering, College of Medicine, Seoul National University, Seoul 03080, Republic of Korea; Interdisciplinary Program in Bioengineering, College of Engineering, Seoul National University, Seoul 08826, Republic of Korea; Institute of Medical & Biological Engineering, Medical Research Center, Seoul National University, Seoul 03080, Republic of Korea.
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Fischer S, Diehm Y, Henzler T, Berger MR, Kolbenschlag J, Latz A, Bueno EM, Hirche C, Kneser U, Pomahac B. Long-Term Effects of the Collagenase of the Bacterium Clostridium histolyticum for the Treatment of Capsular Fibrosis After Silicone Implants. Aesthetic Plast Surg 2017; 41:211-220. [PMID: 28008464 DOI: 10.1007/s00266-016-0724-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 10/18/2016] [Indexed: 10/20/2022]
Abstract
BACKGROUND Capsular contracture remains the most frequent long-term complication after augmentation mammoplasty with silicone implants. Thereby, the main part of the fibrotic capsule is collagen. The collagenase of the bacterium Clostridium histolyticum is approved for the treatment of fibrotic diseases and has been demonstrated to be effective for capsular fibrosis treatment in the short term. However, long-term effectiveness is currently unknown but mandatory for clinical utilization. MATERIALS AND METHODS Forty-eight rats received miniature silicone implants and an injection with either collagenase (treatment group) or plain solvent solution (control group) 120 days post insertion. Ten and 60 days after the injections, the rats underwent 7-Tesla magnetic resonance imaging (MRI) and high-resolution ultrasound (HR-US). Capsule tissue was harvested, and capsule thickness and collagen density were evaluated through histology. Furthermore, the expression levels of inflammatory (CD68, IL4, IL10, IL12, IL13), pro-, and anti-fibrotic (TGFb1, TGFb3, Smad3, Col1-4) genes were analyzed using qRT-PCR. RESULTS On days 10 and 60 after injection of collagenase, histology showed that capsule thickness was significantly reduced in the treatment group when compared with the control (p < 0.05). Thickness measurements were verified by MRI and HR-US analysis. Skin perforation occurred in two cases after collagenase injection. The initial up-regulation of pro-fibrotic and inflammatory genes 10 days after collagenase injection did not persist in the long term. Contrarily, on day 60, a slight trend towards lower expression levels with a significant down-regulation of TGFb3 was detected in the treatment group. CONCLUSION The collagenase of the bacterium C. histolyticum effectively degrades capsular fibrosis around silicone implants with stable outcomes throughout 60 days post injection. Skin perforation and adequate and uniform drug distribution within the implant pocket are issues that need to be addressed. Further studies are warranted to clarify whether collagenase injections have the potential to become a viable treatment option for capsular contracture. NO LEVEL ASSIGNED This journal requires that authors 46 assign a level of evidence to each article. For a full 47 description of these Evidence-Based Medicine ratings, 48 please refer to the Table of Contents or the online 49 Instructions to Authors. www.springer.com/00266 .
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Yeşiloğlu N, Temiz G, Sarıcı M, Yıldız K, Şirinoğlu H, Güvercin E, Akpınar AC, Filinte GT, Filinte D. Effects of Different Concentrations of Injectable Collagenase Enzyme on Capsular Tissue Around Silicone Implants: A Preliminary Experimental Study for the Development of a New Treatment Strategy. Aesthetic Plast Surg 2016; 40:164-73. [PMID: 26715576 DOI: 10.1007/s00266-015-0600-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Accepted: 12/07/2015] [Indexed: 10/22/2022]
Abstract
OBJECTIVES In recent studies, collagen organization was blamed for the formation of capsular contracture which is still a challenging problem after silicone implant-based breast operations. In this study, effects of different concentrations of collagenase enzyme derived from Clostridium histolyticum on the capsular tissue formation around the silicone implants were investigated. The injectable form of collagenase has a routine clinical use in the treatment of both Dupuytren's and Peyronie's diseases. MATERIALS AND METHODS Thirty-two Wistar albino rats were randomized into four groups. A 2 × 1 × 0.3-cm-sized silicone block was inserted inside a dorsal subcutaneous pocket in all groups. After 2 months of insertion, capsule thicknesses around the implants were detected under ultrasonography. This was followed by injection of isotonic saline, 150, 300, and 600 IU in Gr-1, 2, 3, and 4, respectively. All the animals were sacrificed at the end of the first week for histologic sampling to determine fibroblast proliferation, vessel density of the tissue, necrosis, edema, inflammation, and capsule thickness. All the data were statistically analyzed using Kruskal-Wallis and Mann-Whitney U tests and compared for significance of the results. RESULTS There was no significant difference in terms of capsule thinning between the 300 and 600 IU groups but in both groups thinning was significantly higher than the sham group. In the 150 IU group there was no significant thinning as compared to the sham group (p > 0.05). However, complications such as skin necrosis, infection, and seroma formation were seen only in the 600 IU injection group. The optimal safe and effective dose of the enzyme was accepted as 300 IU. The 300 IU injection provided up to 89 % thinning in the capsule tissue. There was thinning of the collagen bundles parallel to capsule thickness. In the 600 IU group, micro-pores were encountered at the thinnest points. CONCLUSION However, the late results and recurrence rates of capsular contracture were not included in this study; collagenase seemed effective for the reduction of capsular tissue around the implants. NO LEVEL ASSIGNED This journal requires that authors assign a level of evidence to each submission to which Evidence-Based Medicine rankings are applicable. This excludes Review Articles, Book Reviews, and manuscripts that concern Basic Science, Animal Studies, Cadaver Studies, and Experimental Studies. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266.
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Figueres ML, Beaume J, Vuiblet V, Rabant M, Bassilios N, Herody M, Touchard G, Noël LH. Crystalline light chain proximal tubulopathy with chronic renal failure and silicone gel breast implants: 1 case report. Hum Pathol 2015; 46:165-8. [PMID: 25454480 DOI: 10.1016/j.humpath.2014.10.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Revised: 09/02/2014] [Accepted: 10/08/2014] [Indexed: 02/07/2023]
Abstract
A 39-year-old female patient was admitted to explore chronic renal failure. Clinical history included silicone breast implants. Clinical examination was normal. Urinalysis revealed tubular proteinuria with Bence-Jones κ protein. Monoclonal immunoglobulin G κ and free monoclonal κ-light chains (LCs) were revealed by serum protein immunoelectrophoresis. Bone marrow aspiration with karyotype analysis and skeletal radiologic survey were normal. Kidney biopsy revealed a peculiar pattern of proximal tubular cells with hypertrophy and clarification initially diagnosed as an osmotic nephrosis. Immunofluorescence study, including immunoglobulin LCs conjugates was normal. Immunoelectron microscopy finally revealed a crystalline LC proximal tubulopathy κ. Our case presents some peculiarities: the absence of hematologic malignancy sign and the young patient's age. The silicone breast implants have been reported to be involved in the generation of monoclonal gammopathy.
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Keizers PHJ, Vredenbregt MJ, Bakker F, de Kaste D, Venhuis BJ. Chemical fingerprinting of silicone-based breast implants. J Pharm Biomed Anal 2014; 102:340-5. [PMID: 25459933 DOI: 10.1016/j.jpba.2014.09.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Revised: 09/05/2014] [Accepted: 09/08/2014] [Indexed: 10/24/2022]
Abstract
With millions of women worldwide carrying them, silicone-based breast implants represent a large market. Even though silicone breast implants already have a history of use of more than 50 years, the discussion on their safety has not yet come to an end. To improve safety assessment, regulatory authorities should have the availability of a set of tests to be able to determine parameters of implant identity and quality. Therefore, the gels and envelopes of various brands and types of silicone-based breast implants have been subjected to infrared, Raman and NMR spectroscopy. We show that by using a combination of complementary spectroscopic techniques breast implants of various origins can be distinguished on typical chemical hallmarks. It was found that typical silicone-based implants display a surplus of vinyl signals in the gel, cyclosiloxane impurities are tolerable at low levels only and a barrier layer is present in the implant envelope. The techniques presented here and the results obtained offer a good starting point for market surveillance studies.
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Affiliation(s)
- Peter H J Keizers
- National Institute for Public Health and the Environment, PO Box 1, 3721 MA, Bilthoven, The Netherlands
| | - Marjo J Vredenbregt
- National Institute for Public Health and the Environment, PO Box 1, 3721 MA, Bilthoven, The Netherlands
| | - Frank Bakker
- National Institute for Public Health and the Environment, PO Box 1, 3721 MA, Bilthoven, The Netherlands
| | - Dries de Kaste
- National Institute for Public Health and the Environment, PO Box 1, 3721 MA, Bilthoven, The Netherlands
| | - Bastiaan J Venhuis
- National Institute for Public Health and the Environment, PO Box 1, 3721 MA, Bilthoven, The Netherlands.
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Schierl R, Lemmer A, Böhlandt A, Friedl L, Haneder S, Nowak D. Silicone implants--a possible confounder for urinary platinum background concentrations? Environ Res 2014; 132:269-272. [PMID: 24834821 DOI: 10.1016/j.envres.2014.04.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 04/01/2014] [Accepted: 04/05/2014] [Indexed: 06/03/2023]
Abstract
INTRODUCTION Urinary platinum excretion from occupationally unexposed population is very low. Up to now, in Germany, dental noble metal alloys and a platinum based chemotherapy have been identified as reason for elevated urine concentrations. As fabrication of silicone involves platinum as catalyst, this study examines the potential release of platinum from silicone breast implants by quantifying urinary platinum concentration. METHODS AND RESULTS Platinum release from three different types of silicone implants into saline solution was measured in a laboratory experiment. It showed a strong increase of platinum concentration during the first 30 min and high platinum concentrations even after 60 h. In the following field study urinary platinum concentrations were determined from 30 women with dental gold alloy restorations and 28 women without such dental inlays. Median platinum concentrations were 5.2 ng/l urine (21.2 ng/g creatinine) for the women with dental gold inlays and 6.0 ng/l urine (5.4 ng/g creatinine) for those without. Compared with the urinary platinum concentrations provided by the German Environmental Survey (GerES) for the general female population the urinary platinum levels of women with silicone implants of the presented study were significantly higher, both for the study groups with and without dental gold alloy inlays. CONCLUSIONS Silicone breast implants must be considered as a new confounder and as a further contributor to elevated urinary platinum concentrations in human platinum background reference values of women.
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Affiliation(s)
- Rudolf Schierl
- Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, Clinical Centre, Ludwig Maximilians University, Ziemssenstrasse 1, D-80336 Munich, Germany.
| | - Anke Lemmer
- Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, Clinical Centre, Ludwig Maximilians University, Ziemssenstrasse 1, D-80336 Munich, Germany
| | - Antje Böhlandt
- Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, Clinical Centre, Ludwig Maximilians University, Ziemssenstrasse 1, D-80336 Munich, Germany
| | - Lilia Friedl
- Department of Obstetrics and Gynaecology, Ludwig Maximilians University, Maistrasse 11, D-80337 Munich, Germany
| | - Sebastian Haneder
- Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, Clinical Centre, Ludwig Maximilians University, Ziemssenstrasse 1, D-80336 Munich, Germany
| | - Dennis Nowak
- Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, Clinical Centre, Ludwig Maximilians University, Ziemssenstrasse 1, D-80336 Munich, Germany
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Bergmann PA, Tamouridis G, Lohmeyer JA, Mauss KL, Becker B, Knobloch J, Mailänder P, Siemers F. The effect of a bacterial contamination on the formation of capsular contracture with polyurethane breast implants in comparison with textured silicone implants: an animal study. J Plast Reconstr Aesthet Surg 2014; 67:1364-70. [PMID: 24953446 DOI: 10.1016/j.bjps.2014.05.040] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2014] [Revised: 03/23/2014] [Accepted: 05/20/2014] [Indexed: 10/25/2022]
Abstract
INTRODUCTION One of the most common complications following breast augmentation is capsular contracture. The subclinical infection of the implant is often considered to be one of the main risk factors. It is believed that polyurethane (PU) implants, because of their larger foam-like surface, have lower capsular contracture rates due to better tissue integration. It remains unclear if bacterial contamination and biofilm formation result in higher capsular contracture rates under the condition of the increased surface of PU implants compared to textured silicone-gel implants. The effect of this bacterial contamination was examined in an animal-based study. METHODS A total of 80 mini implants (40 textured silicone-gel implants and 40 PU implants) were implanted in the dorsum of female Wistar rats. In each group, 20 implants were inoculated before implantation with a standard amount of Staphylococcus epidermidis. Capsules and implants were explanted after 60 days, followed by double-blind histological, immunohistochemical, and microbiological examinations. RESULTS Macroscopic separation of the total capsule in the textured implant group was possible whereas the growth of surrounding tissue into the foam structure of PU implants made separation in that group difficult. After contamination, a thicker capsule could be observed in both groups without significant differences. Histologically, capsules around PU implants showed significantly lower expression of parallel myofibrils. We were able to describe a significant higher infiltration with inflammatory cells in capsules around PU implants both with and without contamination. Microbiological investigations revealed positive growth of S. epidermidis around one PU implant without related signs of capsular contracture. DISCUSSION This study demonstrates that aside from the surface of silicone implants, bacterial contamination has major impact on the architecture of capsule formation. In our study, we were able to demonstrate that bacterial contamination leads to a thicker capsule and an increased tissue reaction with a higher amount of inflammatory cells. However, a resulting bacterial infection was only demonstrated in one case and had an insignificant influence on capsule architecture. The observed inflammatory reaction around PU implants was observed as a nonbacterial, granulomatose foreign body reaction. EBM RATING Level I: Evidence obtained from at least one properly designed randomized controlled trial.
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Affiliation(s)
- Philipp A Bergmann
- Department for Plastic and Handsurgery, Burn Unit, Berufsgenossenschaftliche Kliniken Bergmannstrost, Halle (Saale), Germany.
| | - Georgious Tamouridis
- Department for Plastic and Handsurgery, Burn Unit, Berufsgenossenschaftliche Kliniken Bergmannstrost, Halle (Saale), Germany
| | - Jörn A Lohmeyer
- Department for Plastic Surgery, AGAPLESION Diakonieklinikum Hamburg, Hamburg, Germany
| | - Karl L Mauss
- Plastic Surgery, Handsurgery, Burn Unit, Universitätsklinikum Schleswig-Holstein, Lübeck, Germany
| | - Benedikt Becker
- Plastic Surgery, Handsurgery, Burn Unit, Universitätsklinikum Schleswig-Holstein, Lübeck, Germany
| | - Johannes Knobloch
- Institute for Microbiology, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Peter Mailänder
- Plastic Surgery, Handsurgery, Burn Unit, Universitätsklinikum Schleswig-Holstein, Lübeck, Germany
| | - Frank Siemers
- Department for Plastic and Handsurgery, Burn Unit, Berufsgenossenschaftliche Kliniken Bergmannstrost, Halle (Saale), Germany
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