乳杆菌种类的量化. 对于研究阴道微生物群有兴趣
Vivian Heimbecker1, Bárbara Pontarollo Dal Santos1, Ana Paula Thomaz2
1Department of Gynecology and Obstetrics, Post Graduate Program of Gynecology and Obstetrics, Hospital de Clínicas, Federal University of Paraná, Rua General Carneiro, 181, Alto da Glória, Curitiba, Paraná 80060-900, Brazil.
Journal of microbiological methods
|June 4, 2025
概括
对细菌性阴道病 (BV) 研究来说,量化阴道乳酸菌种,如L. crispatus和L. gasseri,至关重要. 血小板计数可能不准确地反映了乳杆菌的数量,这表明需要替代方法来进行BV治疗研究.
科学领域:
- 微生物学 微生物学
- 阴道健康 阴道健康
- 细菌性阴道炎研究研究
背景情况:
- 阴道微生物群通常由乳杆菌种类主导,对于保持健康至关重要.
- 细菌性阴道炎 (BV) 涉及乳酸菌的枯竭,目前的抗生素治疗通常是无效的.
- 精确的乳酸菌体内定量对于开发新型BV治疗方法,如益生菌和益生菌至关重要.
研究的目的:
- 为了比较光密度 (OD) 测量和板计数 (PC) 的准确性,用于量化 Lactobacillus crispatus 和 Lactobacillus gasseri.
- 评估两个不同的培养基 (LAPTg和NYCIII) 和它们的葡萄糖受限变体的性能,以量化乳酸菌.
主要方法:
- 在LAPTg和NYCIII介质中培养L. crispatus和L. gasseri,包括葡萄糖限制版本 (LAPTgr,NYCIIIgr).
- 通过在540nm (OD540) 的光密度和在多个时间点 (0,8,12,24小时) 的板计数 (CFU/mL) 来评估细菌生长.
- 使用ANOVA进行统计分析,以比较介质条件之间的增长测量.
主要成果:
- 在标准LAPTg和NYCIII介质中观察到较高的OD540读数,与两种物种的葡萄糖受限对应物相比.
- 对于L. crispatus或L. gasseri. 的标准和葡萄糖受限制的LAPTg介质,血盘计数没有显著差异.
- 在NYCIII介质中,只有L. crispatus在标准介质中显示出明显更高的板数,而不是葡萄糖受限版本.
结论:
- 盘子计数可能不会准确地反映 Lactobacillus spp. 在测试条件下丰富度.
- 光密度测量在检测标准与受限制介质的生长差异方面似乎更敏感.
- 未来的BV治疗研究应该考虑将OD测量与替代量化方法 (如分子技术) 结合起来,以改善乳杆菌的评估.
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