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Antibacterial-coated silk surgical sutures by ex situ deposition of silver nanoparticles synthesized with Eucalyptus camaldulensis eradicates infections.
Journal of Microbiological Methods ( IF 1.7 ) Pub Date : 2020-05-20 , DOI: 10.1016/j.mimet.2020.105955
Dwi Marlina Syukri 1 , Ozioma Forstinus Nwabor 1 , Sudarshan Singh 1 , Julalak Chorachoo Ontong 1 , Suttiwan Wunnoo 1 , Supakit Paosen 1 , Soraiham Munah 1 , Supayang Piyawan Voravuthikunchai 1
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Surgical site infection arising from microbial contamination of surgical wounds is a major cause of surgical complications and prolong hospital stay. In this study, silver nanoparticles (AgNPs) biosynthesized using Eucalyptus camaldulensis extract was deposited on silk surgical sutures by ex situ method. Adherence of AgNPs to the surface of sutures was observed, with significantly reduced surface roughness (323.7 ± 16.64 nm), compared with uncoated sutures (469.3 ± 7.31 nm) (P < .001). Elasticity of AgNPs-coated (13 ± 1.485%) and uncoated (8 ± 0.728%) sutures was also significantly different (P < .05). Quantification of AgNPs demonstrated release of 3.88, 5.33, 5.44, 6.14% on day 1, 3, 5, 7, respectively from total Ag+ concentration (6.14 ± 0.14 μg/mL). The coated sutures produced a strong bacteriostatic effect on Staphylococcus aureus, an important wound pathogen with approximately 99% reduction in growth. In contrast, bactericidal effects were observed with Gram-negative pathogens including Acinetobacter baumannii, Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa. Cytocompatibility tested on human keratinocyte cells exhibited approximately 80% cell viability. The coated sutures revealed stable antibacterial properties up to 12 weeks. This work suggested the potency of AgNPs-coated sutures as a suitable biocompatible medical device for the management of surgical site infections.

中文翻译:

通过异位沉积与桉树合成的银纳米颗粒进行抗菌涂层的丝线外科手术缝合线可消除感染。

由手术伤口的微生物污染引起的手术部位感染是手术并发症和延长住院时间的主要原因。在这项研究中,使用桉树提取物生物合成的银纳米颗粒(AgNPs)通过非原位沉积在真丝外科缝合线上。与未涂覆的缝线(469.3±7.31 nm)相比,观察到AgNPs附着在缝线表面,表面粗糙度(323.7±16.64 nm)显着降低(P <.001)。AgNPs涂层(13±1.485%)和未涂层(8±0.728%)缝线的弹性也显着不同(P <.05)。AgNP的定量显示分别在第1、3、5、7天从总Ag +浓度(6.14±0.14μg/ mL)释放3.88、5.33、5.44、6.14%。覆膜缝合线对金黄色葡萄球菌具有很强的抑菌作用,一种重要的伤口病原体,可减少约99%的生长。相反,观察到对革兰氏阴性病原体的杀菌作用,包括鲍曼不动杆菌,大肠杆菌,肺炎克雷伯菌和铜绿假单胞菌。在人角质形成细胞上测试的细胞相容性显示出约80%的细胞活力。涂覆的缝合线显示长达12周的稳定抗菌性能。这项工作表明,用AgNPs涂层缝合线作为治疗手术部位感染的合适生物相容性医疗器械的潜力很大。在人角质形成细胞上测试的细胞相容性显示出约80%的细胞活力。涂覆的缝合线显示长达12周的稳定抗菌性能。这项工作表明,用AgNPs涂层缝合线作为治疗手术部位感染的合适生物相容性医疗器械的潜力很大。在人角质形成细胞上测试的细胞相容性显示出约80%的细胞活力。涂覆的缝合线显示长达12周的稳定抗菌性能。这项工作表明,用AgNPs涂层缝合线作为治疗手术部位感染的合适生物相容性医疗器械的潜力。
更新日期:2020-05-20
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