Robson Martin C, Payne Wyatt G, Ko Francis, Mentis Marni, Donati Guillermo, Shafii Susan M, Culverhouse Susan, Wang Lu, Khosrovi Behzad, Najafi Ramin, Cooper Diane M, Bassiri Mansour
Institute for Tissue Regeneration, Repair and Rehabilitation, Bay Pines, FL.
J Burns Wounds. 2007 Apr 11;6:e6.
Background: A topical antimicrobial that can decrease the bacterial bioburden of chronic wounds without impairing the wound's ability to heal is a therapeutic imperative. A stabilized form of hypochlorous acid (NVC-101) has been demonstrated in vitro and in standard toxicity testing to possess properties that could fulfill these criteria. Materials and Methods: Using a standard rodent model of a chronically infected granulating wound, various preparations of NVC-101 and multiple treatment regimens were investigated to evaluate the role of NVC-101 in decreasing tissue bacterial bioburden and overcoming the inhibition of infection on wound healing. Quantitative bacteriology of tissue biopsies and wound healing trajectories were used to compare the various NVC-101 preparations and regimens to saline-treated negative controls and silver sulfadiazine-treated positive controls. Results: NVC-101 at 0.01% hypochlorous acid with a pH of 3.5 to 4.0 proved to be an effective topical antimicrobial. It was most effective when used for a brief period (15-30 minutes), and followed with another application. Possibly this was due to its rapid neutralization in the wound bed environment. Although not as effective at decreasing the tissue bacterial bioburden as silver sulfadiazine, NVC-101 was associated with improved wound closure. Conclusions: This stabilized form of hypochlorous acid (NVC-101) could have potential application as an antimicrobial wound irrigation and treatment solution if its effective pH range can be maintained in the clinical situation. NVC-101 solution was equally effective at pH 3.5 or 4.0 and more efficient soon after its application. As opposed to other antimicrobials investigated in this animal model, NVC-101 controls the tissue bacterial bioburden without inhibiting the wound healing process.
一种能够降低慢性伤口细菌生物负荷而不损害伤口愈合能力的局部用抗菌剂是治疗的迫切需求。一种稳定形式的次氯酸(NVC - 101)已在体外和标准毒性试验中证明具有满足这些标准的特性。
使用慢性感染肉芽伤口的标准啮齿动物模型,研究了NVC - 101的各种制剂和多种治疗方案,以评估NVC - 101在降低组织细菌生物负荷和克服感染对伤口愈合的抑制作用方面的作用。通过组织活检的定量细菌学和伤口愈合轨迹来比较各种NVC - 101制剂和方案与生理盐水处理的阴性对照和磺胺嘧啶银处理的阳性对照。
含0.01%次氯酸、pH值为3.5至4.0的NVC - 101被证明是一种有效的局部用抗菌剂。短期(15 - 30分钟)使用并随后再次应用时效果最佳。这可能是由于其在伤口床环境中迅速中和。尽管在降低组织细菌生物负荷方面不如磺胺嘧啶银有效,但NVC - 101与伤口愈合改善相关。
如果这种稳定形式的次氯酸(NVC - 101)能在临床情况下维持其有效的pH范围,它可能有作为抗菌伤口冲洗和治疗溶液的潜在应用。NVC - 101溶液在pH值为3.5或4.0时同样有效,且应用后不久更高效。与该动物模型中研究的其他抗菌剂不同,NVC - 101在不抑制伤口愈合过程的情况下控制组织细菌生物负荷。