Vyas Dinesh, Aekka Apoorva, Vyas Arpita
Dinesh Vyas, Apoorva Aekka, Arpita Vyas, College of Human Medicine, Michigan State University, East Lansing, MI 48912, United States.
World J Gastroenterol. 2015 Jan 7;21(1):6-11. doi: 10.3748/wjg.v21.i1.6.
Fecal microbiota transplantation (FMT) has garnered significant attention in recent years in the face of a reemerging Clostridium difficile (C. difficile) epidemic. Positive results from the first randomized control trial evaluating FMT have encouraged the medical community to explore the process further and expand its application beyond C. difficile infections and even the gastrointestinal domain. However promising and numerous the prospects of FMT appear, the method remains limited in scope today due to several important barriers, most notably a poorly defined federal regulatory policy. The Food and Drug Administration has found it difficult to standardize and regulate the administration of inherently variable, metabolically active, and ubiquitously available fecal material. The current cumbersome policy, which classifies human feces as a drug, has prevented physicians from providing FMT and deserving patients from accessing FMT in a timely fashion, and subsequent modifications seem only to be temporary. The argument for reclassifying fecal material as human tissue is well supported. Essentially, this would allow for a regulatory framework that is sufficiently flexible to expand access to care and facilitate research, but also appropriately restrictive and centralized to ensure patient safety. Such an approach can facilitate the advancement of FMT to a more refined, controlled, and aesthetic process, perhaps in the form of a customized and well-characterized stool substitute therapy.
面对艰难梭菌再度流行的情况,粪便微生物群移植(FMT)近年来受到了广泛关注。评估FMT的首个随机对照试验取得的积极结果,促使医学界进一步探索该过程,并将其应用范围扩展到艰难梭菌感染之外,甚至超出胃肠道领域。然而,尽管FMT的前景看起来很有希望且前景众多,但由于几个重要障碍,该方法目前的应用范围仍然有限,最明显的是联邦监管政策不明确。美国食品药品监督管理局发现,难以对本质上可变、具有代谢活性且普遍可得的粪便物质的管理进行标准化和监管。目前将人类粪便归类为药物的繁琐政策,阻碍了医生提供FMT,也使符合条件的患者无法及时获得FMT,后续的修改似乎也只是暂时的。将粪便物质重新归类为人体组织的观点得到了充分支持。从本质上讲,这将允许建立一个足够灵活的监管框架,以扩大医疗服务的可及性并促进研究,同时也具有适当的限制性和集中性,以确保患者安全。这样的方法可以促进FMT发展成为一个更精细、可控且美观的过程,或许可以采用定制化且特征明确的粪便替代疗法的形式。