Juan Manuel Bellón

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BACKGROUND Although heavyweight (HW) or lightweight (LW) polypropylene (PP) meshes are widely used for hernia repair, other alternatives have recently appeared. They have the same large-pore structure yet are composed of polytetrafluoroethylene (PTFE). This study compares the long-term (3 and 6 months) behavior of meshes of different pore size (HW compared(More)
OBJECTIVE To determine the expression pattern of certain metalloproteinases (MMPs) known to be involved in the degradation of the extracellular matrix in cultured fibroblasts from the transversalis fascia (TF) of patients with inguinal hernia. SUMMARY BACKGROUND DATA Inguinal hernia is a common pathology, the cause of which remains unknown. It is,(More)
Transient elastography (FibroScan) is a novel, rapid and noninvasive technique to assess liver fibrosis. Our objective was to compare transient elastography (TE) and other noninvasive serum indexes as alternatives to liver biopsy in HIV/hepatitis C virus (HCV)-coinfected patients. The fibrosis stage (METAVIR Score), TE, the aspartate(More)
The use prosthetic materials for the surgical repair of abdominal wall defects has become almost standard practice. This study was designed to assess the expression of different growth factors (VEGF/TGF-β1) and macrophages during the early host tissue incorporation of several polypropylene lightweight (PP-LW)—including one partially absorbable—and(More)
We have assessed the macrophage response to polypropylene mesh (Marlex) implanted into the abdominal wall of New Zealand white rabbits, using RAM-11, a monoclonal antibody specific for rabbit macrophages. The response diminishes during the course of the first 90 days after implantation, although the presence of other cell types typical of foreign-body(More)
A prospective study of serum cytokine levels was performed in patients randomly assigned to undergo either laparoscopic cholecystectomy (LC) or open cholecystectomy (OC). The kinetics of serum interleukin-1 beta (IL-1 beta), interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-alpha), interleukin-10 (IL-10), and cortisol were studied in both groups of(More)
BACKGROUND The aim of this study was to establish whether new prosthetic materials with absorbable components, designed to reduce the amount of foreign material in abdominal wall repair, offer advantages over the conventional polypropylene meshes. METHODS Seven x 5 cm defects created in the anterior abdominal wall of New Zealand white rabbits were(More)
BACKGROUND This study was designed to assess the early host tissue incorporation of several polypropylene lightweight (PP-LW) meshes used to repair abdominal wall defects and to correlate collagen deposition with the biomechanical response shown by PP-LW versus polypropylene heavyweight (PP-HW) meshes. METHODS Ventral hernial defects (7 x 5 cm) were(More)
INTRODUCTION Presoaking meshes for hernia repair with antiseptics prior to implantation could decrease the adhesion of microorganisms to the material surface and reduce the risk of antibiotic resistances. In this work, we evaluate chlorhexidine and allicin (natural antiseptic not yet tested for these purposes) against vancomycin as antiseptics to be used in(More)
BACKGROUND Noninvasive tests are increasingly being used for the assessment of liver fibrosis. We aimed to develop a serum index for the identification of advanced fibrosis (F>or=3) in HIV/hepatitis C virus (HCV)-coinfected patients. METHODS We carried out a cross-sectional study on a group of 195 patients comprised of an estimation group (EG; n=127) and(More)