CN114908023A - 一株提高肠道放线菌门相对丰度、抑制促炎症因子表达量的凝结芽孢杆菌 - Google Patents
一株提高肠道放线菌门相对丰度、抑制促炎症因子表达量的凝结芽孢杆菌 Download PDFInfo
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Abstract
本发明公开了一株提高肠道放线菌门相对丰度、抑制促炎症因子表达量的凝结芽孢杆菌,属于微生物领域。本发明的菌株凝结芽孢杆菌(Bacillus coagulans)CCFM1041有效缓解肠易激综合症状,凝结芽孢杆菌(Bacillus coagulans)CCFM1041降低IBS小鼠结肠扩张评分、抑制结肠肥大细胞的激活、降低PAR‑2的表达,并降低血清皮质酮的浓度、能够显著提升肠易激综合症状小鼠肠道内放线菌门(Actinobacteria)的相对丰度、抑制了促炎细胞因子(IL‑1β,IL‑6与TNF‑α)的表达,因此,本发明的凝结芽孢杆菌(Bacillus coagulans)CCFM1041在制备肠易激综合症的产品(如药品或保健品等)中,具有巨大的应用前景。
Description
技术领域
本发明涉及一株提高肠道放线菌门相对丰度、抑制促炎症因子表达量的凝结芽孢杆菌, 属于微生物领域。
背景技术
肠易激综合征(Irritable bowel syndrome,IBS)是一种具有肠道功能性障碍的慢性肠道 疾病,通常伴随着腹痛、腹胀与排便习惯的变化。现行的IBS常用诊断标准是多位胃肠病学 学者共同制订的“Rome IV标准”。根据该标准规定的粪便状态,IBS被分为四个亚型,腹泻型 IBS(IBS-D)、便秘型IBS(IBS-C)、腹泻便秘混合型(IBS-M)与未确定型(IBS-U),具有 不同的临床表现。据统计,目前的肠易激综合症状(IBS)患病率大于10%,且女性的IBS 发病率高于男性。然而,由于社会对IBS的认知的缺乏,预计超过三分之一符合IBS罗马Ⅲ 标准的IBS患者仍未被正式诊断为IBS。这表明,IBS的潜在患者仍然众多。
环境变化、情绪变化、肠道感染等因素直接引起的免疫激活(肠道炎症等)、内脏超敏症 状(心理压力、脑肠轴紊乱等)及肠道菌群紊乱(多样性及组成改变),均被认为可能是IBS 的共同诱因。研究发现,肠道菌群参与了宿主的免疫应答、神经信号传导等多个生理生化过 程,并对数个疾病的发生发展具有显著影响。与健康人相比,IBS患者肠道菌群的多样性显 著降低,肠道菌群的组成发生了显著变化。而免疫系统对肠道菌群过度的免疫反应能够诱发 产生肠道损伤性炎症,这说明肠道菌群的紊乱极可能在IBS的发病中具有重要作用。
在先前的研究中,IBS被认为不涉及到患者器质性病变及生化指标异常,但最新的IBS 相关研究推翻了该结论。证据显示,IBS患者的肠道具有一种非常轻的、低度的粘膜炎症、 并伴随着轻微的纤维化与溃疡。这种肠道炎症同样被报道能够引起患者免疫应答的变化,先 天免疫激活状态。因此,机体的免疫过度激活,被认为可能是IBS的共同诱因。目前,已有 大量研究证明了益生菌恢复细胞因子平衡的能力。一项针对IBS患者的安慰剂对照随机临床 试验表明,12周的婴儿双歧杆菌导致IL-10/IL-12比率增加,与健康患者中发现的水平相似。 此外,也有研究报道,益生菌长双歧杆菌可降低小鼠体内的促炎因子TNF-α。而嗜热链球菌、 嗜酸乳杆菌、双歧双歧杆菌和保加利亚乳杆菌的益生菌组合可降低小鼠体内的TNF-α、干扰 素-γ和PGE 2水平这些研究表明,益生菌可以调节先天性和适应性免疫,从而潜在地赋予治 疗益处并治疗IBS中的免疫失调。
对IBS而言,饮食是公认的可能诱发IBS的因素。普遍认为,在饮食中限制短链碳水化 合物(Fermentable oligo-,di-,and monosaccharides and polyols,FODMAPs)有助于缓解IBS 患者的腹痛、腹胀、排便频率等临床症状。然而,关于低FODMAP饮食并非都是统一支持 的声音。部分临床试验发现,不同亚型IBS患者对低FODMAP饮食的响应具有显著差异,效果与患者的基因型也具有一定相关性。且低FODMAP饮食由于改变了患者的饮食习惯, 并限制摄入部分饮食成分,从而对肠道菌群组成与代谢具有显著的影响,这可能是不利于人体健康的。而除膳食疗法外,药物疗法同样被应用于IBS的治疗中。诸如抗痉挛药物、5-HT受体抑制剂、利福昔明抗抑郁药物等药物被报道具有一定IBS缓解功效,但带来的诸如致使患者口干、眼涩、缺血性结肠炎、低血压及性功能障碍等数个副作用相比于膳食疗法更是巨大的。因此,新型的IBS治疗方法的开发是势在必行的。
随着肠道菌群在人类健康中的重要性与日俱增,人们对可以调节肠道菌群的干预措施及 其与宿主的相互作用的兴趣也逐渐增长。除饮食外与FMT外,益生菌是人们最熟知的,亦是 最公认的能够调节人体肠道菌群的物质。
如何通过对益生菌预防IBS的发生甚至缓解IBS的症状,将会对食品科学、微生物学以 及预防医学等各方面产生巨大的影响。
发明内容
本发明提供了一种凝结芽孢杆菌(Bacillus coagulans)GDMCC No.60538在制备改善肠易 激综合症的微生物菌剂中的应用;所述凝结芽孢杆菌GDMCC No.60538记载于公开号为 CN111004731B的中国发明专利文本中;在本发明中,将凝结芽孢杆菌GDMCCNo.60538以 凝结芽孢杆菌CCFM1041命名。
在本发明的一种实施方式中,所述微生物菌剂为包括细胞形态为营养细胞的凝结芽孢杆 菌生物制剂或细胞形态为芽孢的凝结芽孢杆菌生物制剂。
在本发明的一种实施方式中,所述微生物制剂中,凝结芽孢杆菌的芽孢数为不低于5×109 CFU/mL或5×109CFU/g。
在本发明的一种实施方式中,所述细胞形态为营养细胞的凝结芽孢杆菌生物制剂,是将 凝结芽孢杆菌在MRS培养基中活化培养后,离心获得凝结芽孢杆菌菌体,洗涤后收集菌体用 保护剂重悬,得到凝结芽孢杆菌生物制剂;或者,再将重悬的菌体干燥得到凝结芽孢杆菌菌 粉生物制剂。
在本发明的一种实施方式中,所述微生物菌剂具有以下至少一种功能:
(a)降低IBS小鼠结肠扩张评分,缓解外部刺激造成的小鼠内脏痛觉增强;
(b)提高肠易激综合症状小鼠的肠道菌群多样性;
(c)改善小鼠肠道菌群组成,主要包括提高肠易激综合症小鼠肠道放线菌门相对丰度;
(d)缓解肠易激综合症;
(e)改善结肠组织的病理损伤;
(f)抑制结肠组织中促炎症因子的表达量。
本发明提供了一种凝结芽孢杆菌GDMCC No.60538在制备改善肠易激综合症的产品中 的应用。
在本发明的一种实施方式中,所述产品为药品、保健品、饲料或饲料添加剂。
在本发明的一种实施方式中,所述产品中,凝结芽孢杆菌的芽孢数为不低于5×109 CFU/mL或5×109CFU/g。
在本发明的一种实施方式中,所述药品含有凝结芽孢杆菌、药物载体和/或药用辅料。
在本发明的一种实施方式中,所述药物载体包含微囊、微球、纳米粒和/或脂质体。
在本发明的一种实施方式中,所述药用辅料包含赋形剂和/或附加剂。
在本发明的一种实施方式中,所述赋形剂包含黏合剂、填充剂、崩解剂和/或润滑剂。
在本发明的一种实施方式中,所述附加剂包含增溶剂、助溶剂、潜溶剂和/或防腐剂。
在本发明的一种实施方式中,所述药品的剂型为粉剂、颗粒剂、胶囊剂、片剂、丸剂或 口服液。
在本发明的一种实施方式中,所述产品具有以下至少一种功能:
(a)降低IBS小鼠结肠扩张评分,缓解外部刺激造成的小鼠内脏痛觉增强;
(b)提高肠易激综合症状小鼠的肠道菌群多样性;
(c)改善小鼠肠道菌群组成,主要包括提高肠易激综合症小鼠肠道放线菌门相对丰度;
(d)缓解肠易激综合症;
(e)改善结肠组织的病理损伤;
(c)抑制结肠组织中促炎症因子的表达量。
有益效果
本发明的菌株凝结芽孢杆菌(Bacillus coagulans)CCFM1041有效缓解肠易激综合症状,具 体体现在:
(1)本发明的凝结芽孢杆菌(Bacillus coagulans)CCFM1041降低IBS小鼠结肠扩张评分, 缓解外部刺激造成的小鼠内脏痛觉增强。
(2)本发明的凝结芽孢杆菌(Bacillus coagulans)CCFM1041能够抑制结肠肥大细胞的激 活,降低PAR-2的表达,并降低血清皮质酮的浓度。
(3)本发明的凝结芽孢杆菌(Bacillus coagulans)CCFM1041能够改善IBS小鼠肠道菌群 的严重的失调症状,包括提高小鼠肠道菌群多样性水平(提高Observed_OTUs多样性指数及 Shannon多样性指数)。
(4)本发明的凝结芽孢杆菌(Bacillus coagulans)CCFM1041能够显著提升肠易激综合症 状小鼠肠道内放线菌门(Actinobacteria)的相对丰度。
(5)本发明的凝结芽孢杆菌(Bacillus coagulans)CCFM1041缓解了小鼠结肠所受的组织 病理学损伤,抑制了促炎细胞因子(IL-1β,IL-6与TNF-α)的表达。这说明凝结芽孢杆菌(B. coagulans)CCFM1041能够缓解结肠炎症。
(6)本发明的凝结芽孢杆菌(Bacillus coagulans)CCFM1041能够抑制结肠肥大细胞的激 活,降低PAR-2的表达,并降低血清皮质酮的浓度,从而缓解IBS小鼠的内脏超敏症状。
本发明的凝结芽孢杆菌(Bacillus coagulans)CCFM1041在制备肠易激综合症的产品(如药 品或保健品等)中,具有巨大的应用前景。
附图说明
图1:小鼠腹部回撤反射评分标准。
图2:小鼠腹部撤回反射评分;其中,A为气体压力在0.1mL条件下的评分结果,B为气体压力在0.2mL条件下的评分结果;备注:小写字母a~c表示该数据具有统计学差异(P<0.05)。
图3:小鼠结肠组织中肥大细胞类胰蛋白酶的水平。
图4:小鼠结肠组织病理学分析(放大倍数=5×;比例尺=200μm);其中,A组为空白组; B组为模型组,C组为凝结芽孢杆菌GBI-30,6086组;D组为凝结芽孢杆菌CCFM1041组;E组为凝结芽孢杆菌BC-21组;F组为凝结芽孢杆菌BC-30组;G组为凝结芽孢杆菌BC-60 组;H组为凝结芽孢杆菌BC-90组;注:黑色箭头指示该位置存在炎性细胞浸润,红色箭头 指示该位置存在少量淤血。
图5:小鼠结肠促炎细胞因子及抑炎细胞因子的表达;其中,A为小鼠结肠组织中IL-1β 的表达量;B为小鼠结肠组织中IL-6的表达量;C为小鼠结肠组织中IL-10的表达量;D为 小鼠结肠组织中TNF-α的表达量;注:小写字母表示组间具有显著性差异(P<0.05)。
图6:小鼠肠道菌群的多样性分析;其中,A为Observed_OTUs多样性指数,B为Shannon 多样性指数。
图7:小鼠肠道菌群的进化分枝图。
图8:造模组、空白组、凝结芽孢杆菌CCFM1041组之间差异属的线性判别分析得分,其中,A为空白组和造模组之间差异属的线性判别分析得分,B为CCFM1041组和造模组之 间差异属的线性判别分析得分。
具体实施方式
下述实施例中所涉及的鼠柠檬酸杆菌DBS100购自美国ATCC菌种保藏库,所涉及的凝 结芽孢杆菌GBI-30,6086购自美国Ganeden公司,所述凝结芽孢杆菌BC21(VYNDL1M1)、凝结芽孢杆菌BC30(VHuBXY1M1)、凝结芽孢杆菌BC60(VJSNJ4M1)、凝结芽孢杆菌BC90(VGZTR1M1)公开于江南大学食品生物技术中心菌种保藏库。
下述实施例中涉及的培养基如下:
MRS液体培养基(g/L):蛋白胨10g/L、酵母提取物5g/L、葡萄糖20g/L、无水乙酸钠2g/L、柠檬酸氢二胺2g/L、三水磷酸氢二甲2.6g/L、七水硫酸镁0.5g/L、七水硫酸锰0.25 g/L、吐温-80 1g/L、蒸馏水1000g/L。
MRS固体培养基(g/L):蛋白胨10g/L、酵母提取物5g/L、葡萄糖20g/L、无水乙酸钠2g/L、柠檬酸氢二胺2g/L、三水磷酸氢二甲2.6g/L、七水硫酸镁0.5g/L、七水硫酸锰0.25 g/L、吐温-80 1g/L、琼脂20g/L、蒸馏水1000g/L。
产芽孢培养基(g/L):酵母膏0.7g/L、蛋白胨1g/L、葡萄糖1g/L、硫酸铵0.2g/L、七水硫酸镁0.2g/L、磷酸氢二钾1g/L。
下述实施例中所涉及的检测方法如下:
小鼠结肠扩张内脏敏感性的检测:
腹部撤退反射(Abdominal withdrawal reflex,AWR)法测定小鼠结肠扩张内脏敏感性。 各组小鼠禁食16h后进行实验。实验开始后,用4%异氟烷麻醉小鼠,并继续以2%异氟烷持 续麻醉小鼠。将儿童尿导管(6Fr,2mm外径)以液体石蜡进行润滑,从肛门插入小鼠的降 结肠中。将尿道管与小鼠尾部用胶带固定,并将小鼠放置到透气塑料盒中。在塑料盒中,小 鼠仅能前后行走,不能转身。待小鼠适应30min后,以逐步打气加压的方式进行结肠直肠扩 张。压力从0.1、0.2至0.3ml逐步上升,每个压力扩张20s。更换压力时需将气体排空,每 次20秒的扩张之后均有5min休息时间。在评估结束后,将球囊放气并撤回。AWR评分标 准如图1所示,0分-无明显反应;1分-短暂头部摆动再停止;2分-腹部肌肉收缩;3分-腹部 提起;4分-弓背、抬起骨盆。该评分由两名不知道小鼠详细分组的实验人员进行。
实施例1:凝结芽孢杆菌CCFM1041对肠易激综合征小鼠内脏敏感性的缓解作用
(1)凝结芽孢杆菌芽孢悬液的制备
将活化后的凝结芽孢杆菌菌种按2mL/100mL的接种量,接种至产芽孢培养基中,在37℃ 下,250r/min摇瓶培养48h,制备得到凝结芽孢杆菌芽孢悬液。
(2)乳酸林格氏液的制备
在1L蒸馏水中加入9g氯化钠,0.12g氯化钾,0.24g氯化钙,0.2g碳酸氢钠,制备得到乳酸林格氏液。
(3)建立小鼠IBS模型
使用鼠柠檬酸杆菌感染与避水应激压力结合法,建立小鼠IBS模型。将80只C57BL/J 小鼠被随机分为8组(每组10只),分组方式如表1所示。
小鼠适应一周后开始实验,实验时间为30天。实验第1天,空白组小鼠灌胃0.2ml无菌 生理盐水,其余组小鼠灌胃鼠柠檬酸杆菌DBS100(1.2×1010CFU/0.2ml/只)。
第2天到第8天,所有小鼠皮下注射0.5ml乳酸林格氏溶液,以防止腹泻引起的脱水。
第9天到第17天的具体处理方法详见表1;
实验第18天至第30天,所有小鼠均接受避水应激压力(Water avoidance stress,WAS)。 WAS装置为一个直径27cm、高33cm的水桶。桶底装有一个直径4cm、高9cm的干燥平台。水桶中装水,水位低于平台1厘米。每天将小鼠置于平台上1小时,如果小鼠掉进水里,立即捞起并用毛巾擦干。空白组小鼠在无水条件下放置于平台上1h。
除上述处理外,从第2天至第29天,对照组小鼠和模型组小鼠灌胃给予无菌生理盐水(0.2 ml/只/天)。其他组小鼠灌胃给予相应凝结芽孢杆菌芽孢悬液0.2ml(5×109CFU/ml/只/天)。 各组的具体处理方法详见表1~2。
表1:各组的具体处理方法(1)
表2:各组的具体处理方法(2)
(3)用腹部撤退反射(Abdominal withdrawal reflex,AWR)法测定小鼠结肠扩张内脏敏 感性。
将步骤(2)实验结束后的各组小鼠禁食16h后用腹部撤退反射法测定小鼠结肠扩张内 脏敏感性,结果如图2A~B所示。
结果显示:在0.2ml和0.1ml的气体压力下,凝结芽孢杆菌CCFM1041均具有较好的效 果;其中,在0.2ml气体压力下,空白组和造模组的AWR评分分别0.5和3.5,CCFM1041 组为1.2,GBI-30,6086组为1.6,BC-21组为3.7,BC-30组为3,BC60组为3.6,BC90组为 3.9。与其他实验组比较,凝结芽孢杆菌CCFM1041可以显著降低小鼠内脏敏感性,最为接近 空白组,这说明凝结芽孢杆菌CCFM1041具有缓解内脏超敏症状的功效。
(4)将步骤(2)实验结束后的各组小鼠使用异氟烷麻醉处死后,收集小鼠的血清,并 精确取0.1g结肠组织,以预冷过的无菌生理盐水匀浆,以3000×g,4℃条件离心5min收集 上清液。用相应的ELISA试剂盒测定小鼠结肠组织中PAR-2、肥大细胞类胰蛋白酶含量及血 清中的皮质酮水平,其中,肥大细胞类胰蛋白酶含量的结果如图3所示。
结果显示,由图3可知,空白组和造模组中小鼠的结肠肥大细胞类胰蛋白酶表达量为别 为210pg/mg protein和440pg/mg protein,实验组中CCFM1041组为220pg/mgprotein,GBI-30, 6086组为260pg/mg protein,BC-21组为420pg/mg protein,BC-30组为450pg/mg protein, BC-60组为390pg/mg protein,BC-90组为430pg/mg protein;可见,CCFM1041组的效果优 于GBI-30,6086组。
同时,用相应的ELISA试剂盒测定小鼠结肠组织中PAR-2、血清中的皮质酮水平,可知 在凝结芽孢杆菌CCFM1041干预后,小鼠结肠组织中PAR-2、血清中的皮质酮水平的表达水 平均有所下降,接近空白组。进一步提示凝结芽孢杆菌CCFM1041具有较优秀的改善小鼠肠 道敏感症状的作用。
实施例2:凝结芽孢杆菌CCFM1041对肠易激综合征小鼠结肠组织的影响
具体实施方式同实施例1,区别在于,实验结束后,将小鼠解剖后,取新鲜结肠组织放 入多聚甲醛固定液,浸泡后,过夜冲洗。将样品依次经70%、80%、90%各级乙醇溶液脱水, 各30min,再放入95%、100%各2次,每次20min进行脱水。放入1/2纯酒精,1/2二甲苯等量混合液15min,二甲苯前洗液15min、二甲苯后洗液15min至透明为止。放入二甲苯和 石蜡各半的混合液15min,再放入石蜡Ⅰ、石蜡Ⅱ透蜡各50~60分钟来除去透明剂。将处理 好的样品进行包埋切片、展片、烤片、H&E染色与封片。
观察小鼠结肠组织的病理切片,结果如图4所示,空白组,CCFM1041组和GBI-30,6086 组小鼠结肠无明显病理性症状,造模组小鼠的结肠中出现了低度炎性损伤,具体表现为轻微 的炎性细胞浸润症状,而其余凝结芽孢杆菌处理组(BC-21组,BC-30组,BC-60组,BC-90 组)也均呈现出炎症细胞浸润现象,在用凝结芽孢杆菌CCFM1041处理的小鼠中,没有观察 到明显的组织病理学损伤,这表明该菌株可能具有缓解肠道炎症的功效。
实施例3:凝结芽孢杆菌CCFM1041对肠易激综合征小鼠结肠促炎细胞因子及抗炎细胞 因子的调节作用
具体实施方式同实施例1,区别在于,实验结束后,分别将小鼠解剖,精确取0.1g结肠 组织,以预冷过的无菌生理盐水匀浆,以3000×g,4℃条件离心5min收集上清液。用相应的 ELISA试剂盒测定小鼠结肠组织中IL-1β、IL-6、IL-10、TNF-α表达量,结果如图5A~D所示。
由图5A可知,IL-1β的表达量在空白组和造模组中分别为38pg/mg protein和58pg/mg protein,在CCFM1041组中为45pg/mg protein,在GBI-30,6086组中为48pg/mgprotein,在BC-21组中为51pg/mg protein,在BC-30中为53pg/mg protein,在BC-60中为53pg/mg protein,在BC-90中为55pg/mg protein。相比于其他凝结芽孢杆菌处理组,凝结芽孢杆菌 CCFM1041的摄入显著降低了小鼠结肠中促炎症因子1β的表达量,最为接近空白组。
由图5B可知,空白组小鼠、造模组的结肠组织中IL-6表达量分别为44pg/mgprotein和 64pg/mg protein,凝结芽孢杆菌CCFM1041组中IL-6表达量为41pg/mgprotein,而 GBI-30,6086组中IL-6表达量为:48pg/mg protein,可见CCFM1041组的效果优于GBI-30,6086 组。
由图5C可知,空白组小鼠、造模组的结肠组织中IL-10表达量分别为72pg/mgprotein 和134pg/mg protein,凝结芽孢杆菌CCFM1041组中IL-10表达量为87pg/mgprotein,而 GBI-30,6086组中IL-10表达量为:98pg/mg protein,可见CCFM1041组的效果优于 GBI-30,6086组。
由图5D可知,空白组小鼠、造模组的结肠组织中TNF-α表达量分别为13pg/mgprotein 和17pg/mg protein,凝结芽孢杆菌CCFM1041组中TNF-α表达量为8pg/mgprotein,而 GBI-30,6086组中TNF-α表达量为:9.2pg/mg protein,可见CCFM1041组的效果优于 GBI-30,6086组。
这说明经凝结芽孢杆菌CCFM1041处理后,小鼠结肠促炎细胞因子IL-1β,IL-6,IL-10 与TNF-α的表达量有显著降低,并能够恢复至正常水平,与实施例2结果吻合。
在过去的实验中,研究人员研究发现凝结芽孢杆菌专利菌株Unique IS2的摄入无法改善 患者体内促炎症因子IL-6、IL-12、TNF-α、INF-γ的水平(Randomized clinicaltrial:the effect of probiotic Bacillus coagulans Unique IS2 vs.placebo on thesymptoms management of irritable bowel syndrome in adults,DOI:10.1038/s41598-019-48554-x);可见,凝结芽孢杆菌CCFM1041 对促炎症因子的缓解作用有其菌株特异性。
实施例4:凝结芽孢杆菌CCFM1041对肠易激综合征小鼠肠道菌群多样性和组成分析
80只C57BL/J小鼠分组、造模及处理方法同实施例1。实验结束后,通过粪便DNA提取试剂盒提取小鼠粪便DNA,对粪便菌群进行16S rDNA V4区的扩增。并对PCR产物的回 收与纯化,最后通过Illumina Miseq平台测序与生物信息学分析。检测结果如图6A~B、图7~8 所示。
结果显示,由图6A~B可知,凝结芽孢杆菌CCFM1041在Observed_OTUs多样性指数及Shannon多样性指数上,均具有较好的效果,表明该菌具备改善肠道菌群多样性的功效。
由图7~8可知,造模组和其余凝结芽孢杆菌处理组中放线菌门(Actinobacteria)的丰度 出现下降,而CCFM1041组小鼠肠道中放线菌门(Actinobacteria)的相对丰度则显著高于造 模组和其余实验处理组(图7和图8)。
因此,实验结果表明凝结芽孢杆菌CCFM1041的摄入可以线束改善了IBS小鼠的肠道菌 群组成,病提升肠道内放线菌门(Actinobacteria)相对丰度的提升,从而维持肠道稳态。
实施例5:凝结芽孢杆菌CCFM1041在制备缓解肠易激综合征的药品中的应用
将凝结芽孢杆菌CCFM1041以2-4%的接种量接种到产芽孢培养基中在37℃下,250r/min 摇瓶培养48h,离心并洗涤芽孢,用生理盐水重悬浮,使芽孢浓度≥5×109CFU/ml,在分别 称淀粉55.0重量份、纤维素衍生物4.5重量份、羧甲基淀粉钠12.0重量份、滑石粉0.8重量 份、蔗糖1.0重量份与水1.0重量份,充分混匀,采用常规方法制成湿颗粒,然后使用例如中 南制药机械厂生产的压片机进行压片,然后使用小型药物干燥剂中进行干燥,再包装得到本 发明的片剂。
虽然本发明已以较佳实施例公开如上,但其并非用以限定本发明,任何熟悉此技术的人, 在不脱离本发明的精神和范围内,都可做各种的改动与修饰,因此本发明的保护范围应该以 权利要求书所界定的为准。
Claims (10)
1.一种凝结芽孢杆菌(Bacillus coagulans)GDMCC No.60538在制备改善肠易激综合症的微生物菌剂中的应用。
2.如权利要求1所述的应用,其特征在于,所述微生物菌剂为细胞形态为营养细胞的凝结芽孢杆菌生物制剂,或细胞形态为芽孢的凝结芽孢杆菌生物制剂。
3.如权利要求2所述的应用,其特征在于,所述细胞形态为营养细胞的凝结芽孢杆菌生物制剂,是将凝结芽孢杆菌在MRS培养基中活化培养后,离心获得凝结芽孢杆菌菌体,洗涤后收集菌体用保护剂重悬,得到凝结芽孢杆菌生物制剂;或者,再将重悬的菌体干燥得到凝结芽孢杆菌菌粉生物制剂。
4.如权利要求1~3任一所述的应用,其特征在于,所述微生物菌剂中,凝结芽孢杆菌的芽孢数为不低于1×109CFU/mL或1×109CFU/g。
5.凝结芽孢杆菌GDMCC No.60538在制备改善肠易激综合症的产品中的应用。
6.如权利要求5所述的应用,其特征在于,所述产品为药品、保健品、饲料或饲料添加剂。
7.如权利要求6所述的应用,其特征在于,所述产品中,凝结芽孢杆菌的芽孢数为不低于1×109CFU/mL或1×109CFU/g。
8.如权利要求7所述的应用,其特征在于,所述药品中含有凝结芽孢杆菌、药物载体和/或药用辅料。
9.如权利要求8所述的应用,其特征在于,所述药品的剂型为粉剂、颗粒剂、胶囊剂、片剂、丸剂或口服液。
10.如权利要求5~9任一所述的应用,其特征在于,所述产品具有以下至少一种功能:
(a)缓解肠易激综合症;
(b)提高肠易激综合症状小鼠的肠道菌群多样性;
(c)改善小鼠肠道菌群组成,主要包括提高肠易激综合症小鼠肠道放线菌门相对丰度。
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