Delivery of Adipose Derived Stem Cells for Healing Surgical Hernia Repairs

递送脂肪干细胞用于治愈疝气修复手术

• 批准号: 8484968
• 负责人: Bruce Lamb
• 金额: $ 24.37万
• 依托单位: AFFINERGY, LLC
• 依托单位国家: 美国
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-10 至 2012-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8484968
• 关键词: Delivery; Adipose; Derived; Stem; Cells

DESCRIPTION (provided by applicant): Over 700,000 surgical hernia repairs are performed each year in the United States and despite recent advances, a significant rate of recurrence persists. Incisional or visceral hernia repairs account for 100,000 of these surgeries costing 1.7B annually, and have a recurrence rate of 25% for an initial repair and 44% after a second repair. The incorporation of biocompatible mesh to strengthen the abdominal fascia has largely replaced high-tension suturing techniques in surgical hernia repair. Currently, the preferred biomaterials include durable synthetic mesh, which bears all the pitfalls of a permanent foreign body; absorbable mesh which does not provide enough long-term support; or bioprosthetics, which are bioabsorbable but fail at an unacceptably high rate causing recurrent hernias. Surgeons are therefore left to choose between a foreign body and a weak repair. Our goal is to accelerate healing rates after hernia repair by using bioprosthetics containing adipose-derived stem cells (ASCs). ASCs were identified in 2001, and have been used for cell therapy in many indications including bone fractures, myocardial repair and soft tissue repair. Their prohealing function is largely mediated through paracrine factors secreted at the site of injury to promote vascularization, and tissue remodeling. The product prototype we envision will be a point-of-care ASC seeded bioprosthetic that will promote faster healing times, prevent infection, and leave a biologic repair. Our bioprosthetic is designed to prevent recurrence of incisional hernias, thereby reducing inpatient follow-up care, additional surgeries, and patient distress.

描述（由申请人提供）：美国每年进行超过700，000例疝修补手术，尽管最近取得了进展，但复发率仍然很高。切口或内脏疝修补术占这些手术的10万例，每年花费17亿美元，初次修补的复发率为25%，第二次修补后为44%。结合生物相容性补片以加强腹部筋膜已在很大程度上取代了外科疝修补术中的高张力疝修补技术。目前，优选的生物材料包括耐用的合成网片，其具有永久性异物的所有缺陷;不能提供足够长期支撑的可吸收网片;或生物假体，其是生物可吸收的，但以不可接受的高速率失效，导致复发性疝。因此，外科医生只能在异物和弱修复之间做出选择。我们的目标是通过使用含有脂肪源性干细胞（ASC）的生物假体来加快疝修补术后的愈合速度。ASC于2001年被鉴定，并已用于许多适应症的细胞治疗，包括骨折，心肌修复和软组织修复。它们的促愈合功能很大程度上是通过损伤部位分泌的旁分泌因子介导的，以促进血管化和组织重塑。我们设想的产品原型将是一种即时护理的ASC种子生物假体，它将促进更快的愈合时间，预防感染，并留下生物修复。我们的生物假体旨在防止切口疝复发，从而减少住院随访护理，额外手术和患者痛苦。