摘要:口腔微生物实验常见菌包括:链球菌属、乳酸杆菌属、白色念珠菌、牙龈卟啉单胞菌、具核梭杆菌、中间普雷沃菌以及伴放线聚集杆菌等。其基本培养条件分别是:口腔链球菌需在37℃含5%CO2或厌氧条件下,静置培养在BHI培养基中;乳酸杆菌需在37℃含5%CO2或厌氧条件下,静置培养于MRS培养基中;口腔白色念珠菌需37℃,150 r/min摇瓶培养于沙氏培养基或静置培养于沙堡弱培养基平皿;牙龈卟啉单胞菌、具核梭杆菌、中间普雷沃菌等牙周可疑致病菌需在37℃下,用BHI血肉汤培养基在80%N2、10%H2和10%CO2混合气体下厌氧培养;伴放线聚集杆菌需在37℃含5~10% CO2下,用BHI血肉汤培养基培养。
关键词: 口腔链球菌属, 口腔乳酸杆菌属, 白色念珠菌, 牙龈卟啉单胞菌, 具核梭杆菌, 中间普雷沃菌, 伴放线聚集杆菌, 培养条件
材料与试剂
- 无菌脱纤维羊血(品牌:Solarbio;产地:中国;catalog number: TX0030)
- 琼脂(品牌:Biotopped;产地:日本;catalog number: A6190)
- 氯化血红素-维生素K1(品牌:PYG;产地:日本;catalog number: 21301)
- 脑心浸液肉汤培养基(BHI)(品牌:Oxiod;产地:美国;catalog number: CM1135)
- 脑心浸液琼脂培养基(品牌:AOBOX;产地:中国;catalog number: 02-349)
- MRS肉汤培养基(品牌:Oxiod;产地:美国;catalog number: CM0359B)
- MRS琼脂培养基(品牌:Oxiod;产地:美国;catalog number: CM0359B)
- 液体沙氏培养基(品牌:海博;产地:中国;catalog number: HB0379)
- 沙氏琼脂培养基(品牌:海博;产地:中国;catalog number: HB0235)
仪器设备
- 二氧化碳孵箱(品牌:Thermo Fisher Scientific;产地:美国;catalog number: ab12345)
- 电热恒温培养箱(品牌:上海一恒;产地:中国;catalog number: DHP-9052)
- 厌氧培养罐(品牌:尤德生物;产地:中国;catalog number: UT706)
- 厌氧产气袋(品牌:梅里埃;产地:法国;catalog number: 45534)
- 恒温摇床(品牌:RADOBIO;产地:中国;catalog number: Stab S2)
- 立式压力蒸汽灭菌器(品牌:上海申安;产地:中国;catalog number: LDZX-30KBS)
实验步骤
一、培养方法
- 口腔链球菌(Streptococcus),包括血链球菌(Streptococcus sanguinis)、变异链球菌(Streptococcus mutans)、唾液链球菌(Streptococcus salivarius)、酿脓链球菌(Streptococcus pyogenes)、轻型链球菌(Streptococcus mitis)等的培养。
该方法已被广泛应用于多个研究并得到了有效验证(Fu, 2013; Zhu and Wang, 2017; Sun et al., 2019;Ren et al., 2014)。
- 口腔乳酸杆菌属(Lactobacillus),包括嗜酸乳酸杆菌(Lactobacillus acidophilus)、干酪乳酸杆菌(Lactobacillus casei)等的培养。
该方法已被广泛应用于多个研究并得到了有效验证(Wright and Klaenhammer, 1981;Zhang et al., 2014)。 - 常见牙周致病菌的培养
主要牙周致病菌包括:牙龈卟啉单胞菌(Porphyromonas gingivalis)、具核梭杆菌(Fusobacteria nucleatum)、中间普雷沃菌(Prevotella intermedia)以及伴放线聚集杆菌(Aggregatibacter actinomycetemcomitans)等。该方法已被广泛应用于多个研究并得到了有效验证(Moslemi et al., 2015; Lu et al., 2009;Li et al., 2019)。
- 口腔白色念珠菌(Candida albicans)的培养
该方法已被广泛应用于多个研究并得到了有效验证(Khan et al., 2013; Gamarra et al., 2015;Hu et al., 2019)。
二、 培养基的配制
注:培养基的配制及灭菌需要参考产品包装上的说明,不同品牌的同一产品配制比例及灭菌温度和时间可能不一样。
- BHI肉汤培养基:称取3.7 g BHI肉汤干粉,溶于100 ml蒸馏水中,121 ℃高压灭菌15 min,待冷却至常温,备用。
- BHI血肉汤培养基:将3.7 g BHI 肉汤干粉,溶于100 ml蒸馏水中。121 ℃高压灭菌15 min,降至50 ℃。以1:10和1:100的浓度加入无菌脱纤维羊血(冻融的羊血效果更佳)和氯化血红素-维生素K,震荡混合均匀。冷却至常温,放入4 ℃冰箱,避光保存,备用。
- BHI琼脂培养基:称取5.2 g BHI琼脂干粉,溶于100 ml蒸馏水中,121 ℃高压灭菌15 min,待温度降至50℃左右倒入无菌培养皿中,待凝固,备用。
- BHI血琼脂平板培养基:将BHI粉、琼脂粉与蒸馏水以3.7 g:2 g:100 ml的比例混合。121℃高压灭菌15 min,降至50 ℃。以1:10和1:100的浓度加入无菌脱纤维羊血(冻融的羊血效果更佳)和氯化血红素-维生素K,震荡混合均匀。倾注于无菌平板上,待其冷却凝固,放入4 ℃冰箱,避光保存,备用。
- MRS肉汤培养基:称取5.2 g MRS肉汤干粉,溶于100 ml蒸馏水中,115 ℃高压灭菌20 min,待冷却至常温,备用。
- MRS琼脂培养基:称取6.62 g MRS琼脂粉,溶于100 ml蒸馏水中,115 ℃高压灭菌20 min,待温度降至50 ℃左右倒入无菌培养皿中,待凝固,备用。
- 沙氏液体培养基:称取5 g液体沙氏培养基干粉,溶于100 ml蒸馏水中,115 ℃高压灭菌20 min,待冷却至常温,备用。
- 沙氏固体培养基:称取6.5 g液体沙氏琼脂培养基干粉,溶于100 ml蒸馏水中,115 ℃高压灭菌20 min,待温度降至50 ℃左右倒入无菌培养皿中,待凝固,备用。
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Copyright: © 2021 The Authors; exclusive licensee Bio-protocol LLC.
引用格式:张翼飞, 卢洪叶, 张倩, 陈智滨, 陈峰. (2021). 口腔常见微生物的培养方法. // 微生物组实验手册.
Bio-101: e2003516. DOI:
10.21769/BioProtoc.2003516.
How to cite: Zhang, Y. F., Lu, H. Y., Zhang, Q., Chen, Z. B. and Chen, F. (2021). Culture Method of Oral Common Microorganisms. // Microbiome Protocols eBook.
Bio-101: e2003516. DOI:
10.21769/BioProtoc.2003516.