Lorenzo Rosso1, Valentina Parazzi2, Francesco Damarco1, Ilaria Righi3, Luigi Santambrogio1, Paolo Rebulla2, Stefano Gatti4, Stefano Ferrero5, Mario Nosotti1, Lorenza Lazzari2. 1. Thoracic Surgery and Lung Transplant Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. 2. Cell Factory, Centre of Transfusion Medicine, Cellular Therapy and Cryobiology, Department of Regenerative Medicine, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. 3. General and Thoracic Surgery Unit, Legnano Hospital, Legnano, Italy. 4. Centre for Surgical Research, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. 5. Department of Pathology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
Abstract
BACKGROUND: Prolonged air leak is the major cause of morbidity after pulmonary resection. In this study we used in vitro and in vivo experiments to investigate an innovative approach based on the use of human umbilical cord blood platelet gel. MATERIALS AND METHODS: In vitro, a scratch assay was performed to test the tissue repair capability mediated by cord blood platelet gel compared to the standard culture conditions using human primary mesothelial cells. In vivo, an iatrogenic injury was made to the left lung of 54 Wistar rats. Cord blood platelet gel was placed on the injured area only in treated animals and at different times histological changes and the presence of pleural adhesions were evaluated. In addition, changes in the pattern of soluble inflammatory factors were investigated using a multiplex proteome array. RESULTS: In vitro, mesothelial cell damage was repaired in a shorter time by cord blood platelet gel than in the control condition (24 versus 35 hours, respectively). In vivo, formation of new mesothelial tissue and complete tissue recovery were observed at 45±1 and 75±1 hours in treated animals and at 130±2.5 and 160±6 hours in controls, respectively. Pleural adhesions were evident in 43% of treated animals compared to 17% of controls. No complications were observed. Interestingly, some crucial soluble factors involved in inflammation were significantly reduced in treated animals. DISCUSSION: Cord blood platelet gel accelerates the repair of pleural damage and stimulates the development of pleural adhesions. Both properties could be particularly useful in the management of prolonged air leak, and to reduce inflammation.
BACKGROUND: Prolonged air leak is the major cause of morbidity after pulmonary resection. In this study we used in vitro and in vivo experiments to investigate an innovative approach based on the use of human umbilical cord blood platelet gel. MATERIALS AND METHODS: In vitro, a scratch assay was performed to test the tissue repair capability mediated by cord blood platelet gel compared to the standard culture conditions using human primary mesothelial cells. In vivo, an iatrogenic injury was made to the left lung of 54 Wistar rats. Cord blood platelet gel was placed on the injured area only in treated animals and at different times histological changes and the presence of pleural adhesions were evaluated. In addition, changes in the pattern of soluble inflammatory factors were investigated using a multiplex proteome array. RESULTS: In vitro, mesothelial cell damage was repaired in a shorter time by cord blood platelet gel than in the control condition (24 versus 35 hours, respectively). In vivo, formation of new mesothelial tissue and complete tissue recovery were observed at 45±1 and 75±1 hours in treated animals and at 130±2.5 and 160±6 hours in controls, respectively. Pleural adhesions were evident in 43% of treated animals compared to 17% of controls. No complications were observed. Interestingly, some crucial soluble factors involved in inflammation were significantly reduced in treated animals. DISCUSSION: Cord blood platelet gel accelerates the repair of pleural damage and stimulates the development of pleural adhesions. Both properties could be particularly useful in the management of prolonged air leak, and to reduce inflammation.
Authors: Abel Gómez-Caro; Maria Jose Roca Calvo; Juan Torres Lanzas; Ryan Chau; Pedro Cascales; Pascual Parrilla Journal: Eur J Cardiothorac Surg Date: 2006-12-18 Impact factor: 4.191
Authors: N Greppi; L Mazzucco; G Galetti; F Bona; E Petrillo; C Smacchia; E Raspollini; P Cossovich; R Caprioli; P Borzini; P Rebulla; M Marconi Journal: Biologicals Date: 2011-02-24 Impact factor: 1.856