
【国外标准】 Standard Guide for Performance of Lifetime Bioassay for the Tumorigenic Potential of Implant Materials
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4.1 This guide is not intended to specify the exact method of conducting a test for any particular material but only to present some of the criteria that should be considered in method design and possible problems that could lead to misleading results. In the development of the actual test protocol, it is recommended that recognized tumorigenesis bioassay procedures be consulted.4.2 The recommendations given in this guide may not be appropriate for all applications or types of implant materials. These recommendations should be utilized by experienced testing personnel in conjunction with other pertinent information and the requirements of the specific material application.1.1 This guide is intended to assist the biomaterials testing laboratory in the conduct and evaluation of tumorigenicity tests to evaluate the potential for new materials to evoke a neoplastic response. The procedure is generally reserved only for those materials which have not previously been used for human implantation for a significant period of time.1.2 Assessment of tumorigenicity is one of several procedures employed in determining the biological response to a material as recommended in Practice F748. It is assumed that the investigator has already determined that this type of testing is necessary for a particular material before consulting this guide. The recommendations of Practice F748 should be considered before a study is commenced.1.3 Whenever possible, it is recommended that a battery of genotoxicity procedures be initiated and proposed as an alternative to an in-vivo tumorigenicity bioassay. Genotoxicity assays may also be considered as initial screening procedures due to the sensitivity of the assays, the significant reduction in time to gain valuable data, and the desire to reduce the use of animals for testing. Genotoxicity assays that may be considered are outlined in Guides E1262, E1263, E1280, and E2186, and Practices E1397 and E1398. Additionally, other genotoxicity testing which might be considered (but which do not yet have ASTM test methods) include Salmonella/Mammalian-Microsomal Plate Incorporation Mutagenicity Assay, In Vivo Cytogenetics Bone Marrow Chromosomal Damage Assay, BALB/3T3 Morphological Transformation of Mouse Embryo Cells, and the Mouse Micronucleus Assay. The investigator is advised to consider carefully the appropriateness of a particular method for his application after a review of the published literature.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
标准号:
ASTM F1439-03(2018)
标准名称:
Standard Guide for Performance of Lifetime Bioassay for the Tumorigenic Potential of Implant Materials
英文名称:
Standard Guide for Performance of Lifetime Bioassay for the Tumorigenic Potential of Implant Materials标准状态:
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