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1.
Ann Plast Surg ; 72(6): S97-102, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24691348

RESUMO

Different surgical incisions have been proposed for skin-sparing mastectomy in an attempt to better disguise the remaining scar. These techniques are more hidden than the Stewart incision but can still leave scars in visible places and can restrict the natural shape of the upper pole. They can also add complexity and time to the mastectomy, requiring extensive retraction that could damage the salvaged skin flaps to perform an adequate mastectomy. We present a circumvertical mastectomy incision technique, which limits the mastectomy scar to the inferior pole, provides natural lateral contour, superior pole fullness, and contributes to a more youthful breast projection. Between November 2011 and November 2012, 51 women underwent circumvertical AlloDerm/tissue expansion reconstruction at our institution by a single surgeon. The reconstruction was bilateral in 30 patients and unilateral in 21 patients for a total of 81 breasts. Of the 81 reconstructed breasts, 5 patients went on to require a latissimus dorsi flap for definitive reconstruction and 3 failed breast reconstruction for a completion rate of 96%. The goal of creating breast reconstruction results comparable to those of cosmetic breast surgery is becoming a reality. Circumvertical incision is a technique that can prevent visible upper hemispheric breast scarring, limit upper pole constriction by scar placement, and preserves or restores breast projection. Following the principles of aesthetic breast surgery and repositioning the mastectomy scar, one can reconstruct a breast with a more disguised scar, which can be hidden from the patient's downward gaze.


Assuntos
Implante Mamário , Neoplasias da Mama/cirurgia , Cicatriz/prevenção & controle , Mastectomia/métodos , Adulto , Idoso , Colágeno/uso terapêutico , Feminino , Humanos , Pessoa de Meia-Idade , Pele Artificial
2.
Oncogene ; 25(56): 7434-9, 2006 Nov 30.
Artigo em Inglês | MEDLINE | ID: mdl-16751802

RESUMO

Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) has attracted considerable attention for its potential use in tumor therapy, as some recombinant variants of this ligand induce apoptosis in tumor cells without harming most normal cells. Here, we show that TRAIL strongly induces the expression of the proinflammatory cytokines interleukin-8 and monocyte chemoattractant protein 1 and enhances the invasion of apoptosis-resistant pancreatic ductal adenocarcinoma cells in vitro by upregulation of the urokinase-type plasminogen activator expression. Most importantly, we also demonstrate for the first time that TRAIL treatment results in strongly increased distant metastasis of pancreatic tumors in vivo. We orthotopically transplanted human pancreatic ductal adenocarcinoma cells to the pancreata of severe combined immunodeficiency mice and observed a dramatic increase in metastatic spread including a sixfold increase in the volume and fourfold increase in the number of liver metastases upon TRAIL treatment. Our results point to the necessity to carefully evaluate in vivo side effects of TRAIL and to select therapy conditions that not only enhance apoptosis induction but in addition prevent proinvasive and proinflammatory non-apoptotic TRAIL signaling.


Assuntos
Carcinoma Ductal Pancreático/patologia , Metástase Neoplásica , Neoplasias Pancreáticas/patologia , Ligante Indutor de Apoptose Relacionado a TNF/fisiologia , Animais , Humanos , Camundongos , Camundongos SCID
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