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Antibacterial Activity and Bacterial Degradation of Linoleic Acid Hydroperoxide 过氧化亚油酸的抑菌活性及细菌降解
Pub Date : 1900-01-01 DOI: 10.12938/BIFIDUS1982.14.2_67
M. Tsuchida, Y. Morishita
A comparative study was conducted on the antibacterial activities of linoleic acid hydroperoxide (LAHPO) and linoleic acid (LA) against the intestinal bacteria including 35 strains, and the representative species were examined for lipid degradation activity. Enterobacterial species (Escherichia coli, Proteus mirabilis, Citrobacter sp. and Enterobacter sp.), Lactobacillus species (acidophilus, casei and plantarum), and Enterococcus faecalis generally showed the same levels in susceptibility to LA and LAHPO. Bacteroides species (distasonis, vulgatus and thetaiotaomicron) and Clostridium ramosum were highly resistant against LA but not LAHPO. Staphylococcus species (aureus and epidermidis), Lactobacillus pecies (salivarius and fermentum) and the Grampositive anaerobic bacteria including Clostridium perfringens, Bifidobacterium species (bifidum, infantis, adolescentis, breve, longum, animalis, pseudolongum and thermophilus), Peptostreptococcus productus, and Eubacterium sp. were more susceptible to LAHPO than were the enterobacterial species and E. faecalis although they were more resistant against LAHPO than LA. Eubacterium aerofaciens was more susceptible to LAHPO, but strikingly susceptible to both lipids compared to the other bacterial strains. Thin layer chromatography showed that C. perfringens degrade LAHPO and C. ramosum degrade LA, which was consistent with the resistance of the corresponding species to the fatty acids. A similar trend in the resistance to and degradation of the fatty acids was found with B. adolescentis and B. infantis. Much higher degradation abilities were observed in the live bacterial cells than the heat-killed cells of B. adolescentis, C. perfringens, and E. coli, suggesting that they can enzymatically degrade LAHPO in vitro.
比较研究了亚油酸氢过氧化物(LAHPO)和亚油酸(LA)对35株肠道细菌的抑菌活性,并检测了代表性菌株的脂质降解活性。肠杆菌(大肠杆菌、奇异变形杆菌、Citrobacter sp.和Enterobacter sp.)、乳酸杆菌(嗜酸杆菌、干酪杆菌和植物杆菌)和粪肠球菌对LA和LAHPO的敏感性大致相同。拟杆菌(distasonis、vulgatus和taiotaomicron)和梭状芽胞杆菌(Clostridium ramosum)对LA有较高的抗性,而对LAHPO没有较高的抗性。葡萄球菌(金黄色葡萄球菌和表皮葡萄球菌)、乳酸杆菌(唾液芽孢杆菌和发酵芽孢杆菌)和革兰氏阳性厌氧菌包括产气荚膜梭菌、双歧杆菌(双歧杆菌、婴儿芽孢杆菌、青少年芽孢杆菌、短杆菌、长杆菌、动物芽孢杆菌、假芽孢杆菌和嗜热杆菌)、产胃链球菌和真杆菌对LAHPO的敏感性高于肠杆菌和粪肠杆菌,但对LAHPO的抗性高于LA。与其他菌株相比,气faciens真杆菌对LAHPO更敏感,但对这两种脂质都非常敏感。薄层色谱分析结果显示,产气荚膜荚膜荚膜菌能降解LAHPO,而拉莫索菌能降解LA,这与相应物种对脂肪酸的抗性一致。在对脂肪酸的抗性和降解方面,在青少年B.和婴儿B.中发现了类似的趋势。在活菌细胞中观察到的降解能力远远高于热杀死的青春期芽胞杆菌、产气荚膜荚膜杆菌和大肠杆菌细胞,这表明它们可以在体外酶降解LAHPO。
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引用次数: 5
An Application of Dried Bifidobacteria Preparation to Scouring Animals 双歧杆菌干制剂在洗刷动物中的应用
Pub Date : 1900-01-01 DOI: 10.12938/BIFIDUS1982.2.1_41
N. Kimura, Yoshikane Miwako, Kobayashi Akio, T. Mitsuoka
Effect of dried viable bifidobacteria preparations (108 B. thermophilum/g and 109 B. pseudolongum/g) on intestinal flora and clinical symptoms of scouring animals were investigated by oral administration to dogs, calves and pigs. Disturbances of bacterial flora while scouring were only seen in some limited bacterial species. In scouring animals, the population and/or incidence of bifidobacteria and lactobacilli obviously decreased while counts of enterobacteriaceae increased. Appearance of hemolytic E. coli and streptococci, and higher counts of Clostridium perfringens in scouring dogs were characteristic. Oral administration of the bifidobacteria preparation seemed to reinforce recovery of normal intestinal flora and alleviate clinical symptoms of scouring animals. Prophylactic effects of the preparation were observed in preventing diarrhea in weaned puppies, early weaned bull calves and suckling piglets.
通过对狗、犊牛和猪进行口服,研究了干燥活双歧杆菌制剂(108嗜热双歧杆菌/g和109假结肠双歧杆菌/g)对洗涤动物肠道菌群和临床症状的影响。细菌菌群的干扰,而冲刷只看到在一些有限的细菌种类。在洗刷动物中,双歧杆菌和乳酸菌的数量和/或发病率明显下降,而肠杆菌科的数量明显增加。溶血性大肠杆菌和链球菌的出现以及产气荚膜梭菌的较高计数是淘狗的特征。口服双歧杆菌制剂似乎可以加强正常肠道菌群的恢复,减轻洗涤动物的临床症状。观察了该制剂对断奶幼犬、早期断奶犊牛和哺乳仔猪腹泻的预防作用。
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引用次数: 40
Effect of Isomalto-oligosaccharides on Human Fecal Flora 异麦芽糖寡糖对人体粪便菌群的影响
Pub Date : 1900-01-01 DOI: 10.12938/BIFIDUS1982.7.2_61
T. Kohmoto, F. Fukui, Hajime Takaku, Y. Machida, M. Arai, T. Mitsuoka
The effect of isomalto-oligosaccharides on human fecal flora was studied. Bifidobacteria and the Bacteroides fragilis group from human intestine could utilize isomalto-oligosaccharides but Escherichia coli and other bacteria could not. After the administration of isomaltooligosaccharides (13.5 g daily for 2 weeks) to healthy adult men and senile persons, the numbers of bifidobacteria in the feces increased. The consistency of feces was improved. These studies may support the usefulness of isomalto-oligosaccharides as components of new healthy foodstuffs for the improvement of the intestinal flora.
研究了异麦芽糖寡糖对人体粪便菌群的影响。双歧杆菌和脆弱拟杆菌群可以利用异麦芽糖,而大肠杆菌和其他细菌则不能。健康成年男性和老年人服用低聚异麦芽糖(每天13.5 g,连续2周)后,粪便中双歧杆菌数量增加。提高了粪便的粘稠度。这些研究可能支持异麦芽糖寡糖作为改善肠道菌群的新型健康食品成分的有效性。
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引用次数: 149
Intestinal Glycolipids and Their Possible Role in Microbial Colonization of Mice 肠道糖脂及其在小鼠微生物定植中的可能作用
Pub Date : 1900-01-01 DOI: 10.12938/BIFIDUS1982.8.1_13
Y. Umesaki
The alimentary tract is colonized by more than one hundred species of and more than one thousand billion microbes (per gram contents) . It is well known that the microbes colonized characteristically according to the site of the alimentary tract and species and physiological conditions of the host animal such as age (16, 17, 19) . Comparative studies between germfree and conventional animals clearly show that the intestinal microbes greatly affect physiology and morphology of the intestine of the host animal. However, we have not yet been able to obtain precise mechanisms of the difference between germfree and conventional animals in spite of great efforts thus far. On the other hand, the sphingoglycolipids are now studied from the aspect of the host receptor-intestinal microbe interaction. The glycolipids are very abundant in the microvillus membrane of the small intestinal epithelial cells (11, 14) . The composition of these glycolipids are different among species (3), developmental ages of the animals (12, 18), and between normal and pathological conditions of the host animals (6, 9) . And also these glycolipids have, at least in vitro, high affinity for the microbes (10) as well as the enterotoxins produced by pathogenic microorganisms (27) . Thus there is some reason to consider that the glycolipid might be a mediator between host animals and intestinal microbes. In this review, we summarize what changes occur in the intestinal glycolipids by association of the intestinal microbes with germfree animals, discuss the mechanism of this glycolipid change, and finally consider what roles these glycolipids play in the colonization of the intestinal microbes.
消化道被一百多种微生物和超过一万亿的微生物(每克含量)定植。众所周知,微生物的定殖是根据宿主动物的消化道位置、物种和生理条件(如年龄)而有特点的(16,17,19)。无菌动物与常规动物的对比研究清楚地表明,肠道微生物对宿主动物肠道的生理和形态有很大的影响。然而,尽管迄今为止我们付出了巨大的努力,但我们尚未能够获得无菌动物与常规动物之间差异的精确机制。另一方面,从宿主受体与肠道微生物相互作用的角度对鞘糖脂进行了研究。糖脂在小肠上皮细胞的微绒毛膜中非常丰富(11,14)。这些糖脂的组成在物种(3)、动物的发育年龄(12,18)以及宿主动物的正常和病理状态(6,9)之间是不同的。而且,至少在体外,这些糖脂对微生物(10)以及病原微生物产生的肠毒素(27)具有高亲和力。因此,有理由认为糖脂可能是宿主动物与肠道微生物之间的介质。本文综述了肠道微生物与无菌动物相关时肠道糖脂发生的变化,讨论了这种糖脂变化的机制,并探讨了这些糖脂在肠道微生物定植中的作用。
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引用次数: 9
Role of Bifidobacterium in Enteric Infection 双歧杆菌在肠道感染中的作用
Pub Date : 1900-01-01 DOI: 10.12938/BIFIDUS1982.3.1_3
R. Nakaya
1. Pathogenesis of Bacterial Infections of the Intestinal Mucosa 2. Laboratory Models of Shigella Infection 3. Inhibitory Effects of Bifidobacterium on Cultured Cell Infection by Shigella Experimentals Inhibitory effects of B. infantis on HeLa cell infection by S. flexneri Effect of various bacterial strains on HeLa cell infection by S. flexneri Inhibitory effect of culture supernatant of B . infantis on cell infection by S. flexneri Interaction in vitro between Shigella and Bifidobacterium 4. Concluding Remarks
1. 肠黏膜细菌感染的发病机制志贺氏菌感染的实验室模型双歧杆菌对培养细胞感染志贺氏菌的抑制实验婴儿双歧杆菌对福氏梭菌感染HeLa细胞的抑制作用不同菌株对福氏梭菌感染HeLa细胞的影响双歧杆菌与志贺氏菌体外相互作用对婴儿细胞感染的影响结束语
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引用次数: 14
Isolation of Bacteria Elaborating Glycosyltransferase from the Feces of Humans and Animals 从人畜粪便中分离糖基转移酶细菌的研究
Pub Date : 1900-01-01 DOI: 10.12938/BIFIDUS1982.8.2_95
A. Inoue, K. Yazawa, K. Kondo, T. Fujisawa, T. Mitsuoka
Bacteria elaborating glycosyltransferase (GT) which produce polysaccharide or oligosaccharide from sucrose were surveyed from the feces of humans and animals. Three isolates having strong GT activity were obtained from animal feces. Strain F3-33 obtained from a common marmoset was identified as Bifidobacterium animalis, strain L2-13 obtained from a ruffed lemur was identified as Lactobacillus reuteri, and strain D2-38 obtained from a prairie dog was identified as Lactobacillus sp.
从人类和动物的粪便中,对具有糖基转移酶(GT)的细菌进行了调查,这些细菌能将蔗糖转化为多糖或低聚糖。从动物粪便中分离得到3株具有较强GT活性的菌株。从普通狨猴中分离的菌株F3-33鉴定为动物双歧杆菌,从狐猴中分离的菌株L2-13鉴定为罗伊氏乳杆菌,从草原犬鼠中分离的菌株D2-38鉴定为乳杆菌。
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引用次数: 1
Recommended Method for Enumeration of Lecithinase-Positive Clostridia in Human Feces 人粪便中卵磷脂酶阳性梭菌的推荐计数方法
Pub Date : 1900-01-01 DOI: 10.12938/BIFIDUS1982.13.1_27
A. Terada, H. Hara, Kimikazu Ikegame, Masakuni Sasaki, T. Mitsuoka
This paper describes a recommended method for the detection and enumeration of lecithinase-positive clostridia in fecal specimens. The use of specimens treated at 80°C for 10 min in parallel with unheated specimens with both selective and nonselective media is needed for the enumeration of lecithinase-positive clostridia in fecal specimens, when the numbers are less than 104/g.
本文介绍了粪便标本中卵磷脂酶阳性梭菌的检测和计数方法。当粪便标本中卵磷脂酶阳性梭菌数量小于104/g时,需要使用80°C处理10分钟的标本与未加热的标本同时使用选择性和非选择性培养基进行计数。
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引用次数: 16
Antitumor and Immunological Adjuvant Effect of Bifidobacterium infantis in Mice 婴儿双歧杆菌对小鼠的抗肿瘤和免疫佐剂作用
Pub Date : 1900-01-01 DOI: 10.12938/BIFIDUS1982.1.1_61
Y. Kohwi, Y. Hashimoto, Z. Tamura
Intraregional repeated injections of living or killed Bifidobacterium infantis inhibited the growth of established Meth-A tumor cells transplanted subcutaneousl y into syngeneic BALB/c mice (regression) . When tumor cells mixed with B infantis were inoculated subcutaneously into mice, tumors did not develop in the majority of the recipient mice (suppression) . Water-insoluble cell walls which were obtained b y sonication f k ll ed B. infantis induced suppression of tumor development but failed to induce regression of tumor growth when these preparations were injected intra regionally after tumor implantation . In contrast, although the water-soluble supernatant fractions of sonicated killed B. infantis did not exhibit tumor suppression , ef-f ective regression of established tumors followed intraregional injection of these frac tions. The immunological adjuvant effects of B. infantis or its components were also studied. These bacterial preparations potentiated both tumor tra nsplantation i mmunity and the delayed-type hypersensitivity response against sheep erythrocytes in mice.
区域内重复注射活的或死的婴儿双歧杆菌抑制了皮下移植到同基因BALB/c小鼠的已建立的甲基a肿瘤细胞的生长(回归)。当混合了B型婴儿的肿瘤细胞被皮下接种到小鼠体内时,大多数受体小鼠没有发生肿瘤(抑制)。通过超声波获得的不溶性细胞壁可抑制肿瘤的生长,但在肿瘤植入后局部注射这些制剂后,不能诱导肿瘤的生长消退。相比之下,尽管超声杀死的婴儿B.的水溶性上清部分没有表现出肿瘤抑制作用,但在区域内注射这些部分后,已建立的肿瘤有效消退。研究了婴儿双歧杆菌及其组分的免疫佐剂作用。这些细菌制剂增强了肿瘤移植免疫和小鼠对绵羊红细胞的延迟型超敏反应。
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引用次数: 21
Intestinal Microflora and Carcinogenesis 肠道菌群与癌变
Pub Date : 1900-01-01 DOI: 10.12938/BIFIDUS1982.9.2_65
B. Reddy
The recognition that environmental and dietary factors play an important role in the etiology of several types of cancer, and that the role of microflora alterations during these conditions may be crucial, has given impetus to many nutritionists , toxicologists and oncologists to investigate the relationship among the gut microflora, nutritional factors and carcinogenesis in humans and in laboratory animals . The carcinogens responsible may be formed in the environment, or may be ingested in the form of a preformed carcinogen, cocarcinogen , promoter and/or procarcinogen, and metabolized to the ultimate carcinogen in the body. Furthermore, the external factors such as diet and bacterial supplements can affect the metabolic activity of gut microflora. In this context, the role of bacteria in the production , activation and/or deactivation of carcinogenes and tumor promoters has been investigated in several laboratories. This brief review evaluates the recognizable features on the relationship between the intestinal microflora and carcinogenesis and the mechanism whereby the intestinal microflora and their metabolites modulate the carcinogenesis in humans and in laboratory animal models.
人们认识到环境和饮食因素在几种癌症的病因学中起着重要作用,而在这些情况下,微生物群落的改变可能起着至关重要的作用,这促使许多营养学家、毒理学家和肿瘤学家在人类和实验动物中研究肠道微生物群落、营养因素和致癌之间的关系。所述致癌物可以在环境中形成,也可以以预先形成的致癌物、辅致癌物、启动子和/或前致癌物的形式被摄入,并在体内代谢为最终致癌物。此外,饮食和细菌补充等外部因素也会影响肠道菌群的代谢活性。在这种情况下,细菌在致癌基因和肿瘤启动子的产生、激活和/或失活中的作用已经在几个实验室进行了研究。本文简要综述了肠道菌群与肿瘤发生关系的已知特征,以及肠道菌群及其代谢产物调节人类和实验动物肿瘤发生的机制。
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引用次数: 6
β -Glucuronidase Activity of Escherichia coli Isolated over a Long Term from Feces of the Same Human 从同一人粪便中长期分离的大肠杆菌β -葡萄糖醛酸酶活性的研究
Pub Date : 1900-01-01 DOI: 10.12938/BIFIDUS1982.11.2_77
T. Fujisawa, M. Mori
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引用次数: 1
期刊
Bifidobacteria and Microflora
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