当前位置: X-MOL 学术Probiotics Antimicrob. Proteins › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Probiotic Properties of Lactobacilli and Their Ability to Inhibit the Adhesion of Enteropathogenic Bacteria to Caco-2 and HT-29 Cells.
Probiotics and Antimicrobial Proteins ( IF 4.9 ) Pub Date : 2020-05-15 , DOI: 10.1007/s12602-020-09659-2
Hugo Calixto Fonseca 1 , Dirceu de Sousa Melo 2 , Cíntia Lacerda Ramos 3 , Disney Ribeiro Dias 1 , Rosane Freitas Schwan 2
Affiliation  

We evaluated the probiotic properties of lactic acid bacteria using resistance, safety, and functional assays. A preliminary subtractive screening of nineteen strains was performed based on their survival in simulated gastric and intestinal juice, and cell surface characteristics (hydrophobicity and auto-aggregation). Five strains were selected for further characterization, which included the assessment of their co-aggregation to pathogens, phenol tolerance, antimicrobial activity, and safety. Moreover, their adhesion to Caco-2 and HT-29 cells and the ability to inhibit pathogenic bacteria adhesion were evaluated. All strains had high (≥ 80.0%) survival rates in gastric and intestinal juices. Among them, Lactobacillus brevis CCMA 1284, L. plantarum CCMA 0743, and L. plantarum CCMA 0359 exhibited higher hydrophobicity (95.33, 96.06, and 80.02%, respectively), while L. paracasei CCMA 0504 and L. paracasei CCMA 0505 had the highest auto-aggregation values (45.36 and 52.66%, respectively). However, these last two strains were positive for the DNAse test, which is a safety concern. The CCMA 0359 and CCMA 1284 strains did not show antimicrobial activity, while the CCMA 0505 strain had a higher percentage of adhesion (4.75%) to Caco-2 cells. In the simulated competition and exclusion assays, the CCMA 0743 strain was able to reduce Salmonella adhesion to both cells (Caco-2 and HT-29), but only the CCMA 0743 and CCMA 0505 strains inhibited Escherichia coli adhesion to HT-29 cells in the competition assay. According to the results of these evaluated attributes, this strain showed to be an excellent candidate for probiotic use.

中文翻译:

乳酸杆菌的益生菌特性及其抑制肠病原细菌对Caco-2和HT-29细胞粘附的能力。

我们使用抗性,安全性和功能分析评估了乳酸菌的益生菌特性。根据其在模拟胃液和肠液中的存活率以及细胞表面特征(疏水性和自动聚集),对19个菌株进行了初步的减性筛选。选择了五种菌株进行进一步鉴定,包括对其与病原体的共聚集,酚耐受性,抗菌活性和安全性的评估。此外,评估了它们对Caco-2和HT-29细胞的粘附性以及抑制病原菌粘附的能力。所有菌株在胃液和肠液中均具有较高的生存率(≥80.0%)。其中,短乳杆菌CCMA 1284,植物乳杆菌CCMA 0743和植物乳杆菌CCMA 0359表现出较高的疏水性(95.33、96.06和80.02%,),而副干酪乳杆菌CCMA 0504和副干酪乳杆菌CCMA 0505的自动聚集值最高(分别为45.36和52.66%)。但是,这最后两个菌株对DNAse测试呈阳性,这是一个安全问题。CCMA 0359和CCMA 1284菌株没有显示抗菌活性,而CCMA 0505菌株对Caco-2细胞的粘附百分比更高(4.75%)。在模拟竞争和排除试验中,CCMA 0743菌株能够降低沙门氏菌对两种细胞的粘附(Caco-2和HT-29),但只有CCMA 0743和CCMA 0505菌株能抑制大肠杆菌对HT-29细胞的粘附。竞争分析。根据这些评估属性的结果,该菌株被证明是益生菌使用的极佳候选者。副干酪CCMA 0505的自动聚集值最高(分别为45.36和52.66%)。但是,这最后两个菌株对DNAse测试呈阳性,这是一个安全问题。CCMA 0359和CCMA 1284菌株没有显示抗菌活性,而CCMA 0505菌株对Caco-2细胞的粘附百分比更高(4.75%)。在模拟竞争和排除试验中,CCMA 0743菌株能够降低沙门氏菌对两种细胞的粘附(Caco-2和HT-29),但只有CCMA 0743和CCMA 0505菌株能抑制大肠杆菌对HT-29细胞的粘附。竞争分析。根据这些评估属性的结果,该菌株被证明是益生菌使用的极佳候选者。副干酪CCMA 0505的自动聚集值最高(分别为45.36和52.66%)。但是,这最后两个菌株对DNAse测试呈阳性,这是一个安全问题。CCMA 0359和CCMA 1284菌株没有显示抗菌活性,而CCMA 0505菌株对Caco-2细胞的粘附百分比更高(4.75%)。在模拟竞争和排除试验中,CCMA 0743菌株能够降低沙门氏菌对两种细胞的粘附(Caco-2和HT-29),但只有CCMA 0743和CCMA 0505菌株能抑制大肠杆菌对HT-29细胞的粘附。竞争分析。根据这些评估属性的结果,该菌株被证明是益生菌使用的极佳候选者。这最后两个菌株对DNAse测试呈阳性,这是一个安全问题。CCMA 0359和CCMA 1284菌株没有显示抗菌活性,而CCMA 0505菌株对Caco-2细胞的粘附率更高(4.75%)。在模拟竞争和排除试验中,CCMA 0743菌株能够降低沙门氏菌对两种细胞的粘附(Caco-2和HT-29),但只有CCMA 0743和CCMA 0505菌株能抑制大肠杆菌对HT-29细胞的粘附。竞争分析。根据这些评估属性的结果,该菌株被证明是益生菌使用的极佳候选者。这最后两个菌株对DNAse测试呈阳性,这是一个安全问题。CCMA 0359和CCMA 1284菌株没有显示抗微生物活性,而CCMA 0505菌株对Caco-2细胞的粘附百分比更高(4.75%)。在模拟竞争和排除试验中,CCMA 0743菌株能够降低沙门氏菌对两种细胞的粘附(Caco-2和HT-29),但只有CCMA 0743和CCMA 0505菌株能抑制大肠杆菌对HT-29细胞的粘附。竞争分析。根据这些评估属性的结果,该菌株被证明是益生菌使用的极佳候选者。在模拟竞争和排除试验中,CCMA 0743菌株能够降低沙门氏菌对两种细胞的粘附(Caco-2和HT-29),但只有CCMA 0743和CCMA 0505菌株能抑制大肠杆菌对HT-29细胞的粘附。竞争分析。根据这些评估属性的结果,该菌株被证明是益生菌使用的极佳候选者。在模拟竞争和排除试验中,CCMA 0743菌株能够降低沙门氏菌对两种细胞的粘附(Caco-2和HT-29),但只有CCMA 0743和CCMA 0505菌株能抑制大肠杆菌对HT-29细胞的粘附。竞争分析。根据这些评估属性的结果,该菌株被证明是益生菌使用的极佳候选者。
更新日期:2020-05-15
down
wechat
bug