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Suppressive Effect of Feeding Yoghurt or Lactose on N-Methyl-N'-Nitro-N-Nitrosoguanidine-Induced Gastric Tumorigenesis in Rats 饲喂酸奶或乳糖对n -甲基- n '-硝基- n -亚硝基胍诱导大鼠胃肿瘤发生的抑制作用
Pub Date : 1900-01-01 DOI: 10.12938/BIFIDUS1982.9.2_135
Y. Morishita, K. Shiromizu
After the previous administration with N-methyl-N'-nitroN-nitrosoguanidine in drinking water, Wistar rats were fed 25 g/day of yoghurt on 4 days every week or a 20%-lactose-containing purified diet, and the incidence of gastrointestinal tumors in them was compared with that in their counterparts. The yoghurt-fed rats showed a significantly lower incidence of gastric tumors (50%) than the counterpart group (89%). Dietary lactose considerably suppressed the incidence of gastric tumors (10%) compared to the control diet (44%) . These data support the epidemiological view that milk and milk products are protective against human gastric cancer.
Wistar大鼠在饮水中给予n -甲基-n '-氮-亚硝基胍后,每周4天给予25 g/d的酸奶或20%乳糖的纯化饲料,比较其胃肠道肿瘤的发生率。酸奶喂养的大鼠胃肿瘤的发生率(50%)明显低于对照组(89%)。与对照组(44%)相比,饮食中的乳糖显著抑制了胃肿瘤的发生率(10%)。这些数据支持了流行病学的观点,即牛奶和奶制品可以预防人类胃癌。
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引用次数: 8
D-Xylonic Acid Utilization by Bifidobacteria 双歧杆菌对d -木糖酸的利用
Pub Date : 1900-01-01 DOI: 10.12938/BIFIDUS1982.14.1_15
H. Noda, M. Ohsugi
Intact cell suspension and/or growing cells of Micrococcus sp . produced a large amount of D-xylonic acid from D-xylose. Utilization of D-xylonic acid by intestinal microorganisms was studied. All 5 species of the genera Bifidobacterium, B. adolescentis M101-4, B. bifidum A234-4, B. breve 153-8, B. infantis I-10-5 and B. longum M101-2, showed good growth on basal medium containing D-xylonic acid. Escherichia coli utilized well Dxylonic acid but not fructooligosaccharide.
微球菌的完整细胞悬浮液和/或生长细胞。从d -木糖中产生大量的d -木糖酸。研究了肠道微生物对d -木糖酸的利用。双歧杆菌属少年双歧杆菌M101-4、双歧杆菌A234-4、短双歧杆菌153-8、婴儿双歧杆菌I-10-5和长双歧杆菌M101-2在含d -二甲酸的基础培养基上均表现出良好的生长。大肠杆菌对二氯乙酸利用良好,对低聚果糖利用不佳。
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引用次数: 0
Nutriology of Bifidobacteria 双歧杆菌营养学
Pub Date : 1900-01-01 DOI: 10.12938/BIFIDUS1982.2.1_3
Z. Tamura
In those days before 1950, when the manufacture of powdered milk was in its early stages, it was widely recognized that breastfeeding was superior to bottle-feeding for new-born babies, because of a lower frequency of sickness (especially gastro-enteritis), better condition of the patient, and furthermore a lower mortality. There have been reported many hypotheses to explain this observation (Table 1) : Breast milk contains anti-bacterial and anti-viral proteins (secretary IgA), macrophages, lymphoid cells and iron-snatching protein (lactoferrin) ; has no alien substances as antigens; provides mental comfort to babies through close physical contact, and so on. Above all, the difference in intestinal microflora has been considered to be a big factor. In the intestines of breast-fed babies bifidobacteria grow well enough to be predominant over other bacteria (bifidus-flora). On the other hand, in the intestines of bottle-fed babies the number of bifidobacteria decreased and other bacteria such as Escherichia coli dominated in turn (Fig. 1) . Therefore the role of bifidobacteria has been of interest to many investigators such as pediatrists, dieticians, chemists and bacteriologists. These hypotheses are reviewed in references (16, 27, 35 and 53) . The investigators have found the biological activities and roles of bifidobacteria as follows (Table 2) : 1. Bifidobacteria produce acetic acid and lactic acid from sugars. These acids lower pH of a medium and have anti-bacterial effect in acidic condition (2, 8), as shown in Fig. 2. The produced acids also inhibit absorption of ammonia and amines through
在1950年以前的那些日子里,当奶粉生产处于早期阶段时,人们普遍认为母乳喂养比奶瓶喂养对新生儿更好,因为母乳喂养的发病率较低(特别是胃肠炎),病人的状况较好,而且死亡率较低。据报道,有许多假说可以解释这一观察结果(表1):母乳中含有抗菌和抗病毒蛋白(秘书IgA)、巨噬细胞、淋巴样细胞和抢铁蛋白(乳铁蛋白);无外来物质作为抗原;通过亲密的身体接触,给宝宝提供精神上的安慰,等等。最重要的是,肠道菌群的差异被认为是一个很大的因素。在母乳喂养的婴儿肠道中,双歧杆菌生长良好,足以压倒其他细菌(双歧菌群)。另一方面,在奶瓶喂养的婴儿肠道中,双歧杆菌数量减少,而大肠杆菌等其他细菌则占主导地位(图1)。因此,双歧杆菌的作用引起了许多研究者的兴趣,如儿科医生、营养师、化学家和细菌学家。这些假设在文献(16,27,35和53)中进行了回顾。研究者发现双歧杆菌的生物学活性和作用如下(表2):1。双歧杆菌从糖中产生乙酸和乳酸。这些酸降低了培养基的pH值,在酸性条件下具有抗菌作用(2,8),如图2所示。所产生的酸还能抑制氨和胺的吸收
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引用次数: 80
Tumor-suppressive effect of a cell wall preparation, WPG, from Bifidobacterium infantis in germfree and flora-bearing mice 婴儿双歧杆菌细胞壁制剂WPG对无菌和带菌小鼠的肿瘤抑制作用
Pub Date : 1900-01-01 DOI: 10.12938/BIFIDUS1982.10.1_43
S. Tsuyuki, S. Yamazaki, H. Akashiba, H. Kamimura, K. Sekine, T. Toida, M. Saito, T. Kawashima, K. Ueda
A cell wall preparation (whole peptidoglycan, WPG) derived from Bifidobacterium infantis exhibited antitumor activity when WPG and Meth A cells were mixed and injected subcutaneously (suppression test) in flora-bearing (FB) BALB/c mice. This antitumor activity was markedly reduced when the germfree (GF) BALB/c mice were used as a host. Histological examination of the injected site revealed vigorous polymorphonuclear leukocyte (PMN) infiltration and tumor cell degeneration at day 1 to 3 postimplantation of WPGMeth A mixture in both FB and GF mice, but later on re-appearance of tumor cell mass was seen in many GF but in only a few FB mice. Similar but somewhat weaker suppressive effects of WPG were seen in FB athymic nu/nu mice in which severe PMN infiltration was also developed. Results indicated that the early inflammatory reaction composed mostly of PMN played a role as the major effector mechanisms in the suppression test, and inferior antitumor activity of PMN from GF mice to that from FB mice was implicated. However, since FB euthymic but not FB nu/nu mice showed development of antitumor immunity in re-implantation, involvement of immunological capacity might have played an additional role in the suppression efficiency.
从婴儿双歧杆菌中提取的细胞壁制剂(全肽聚糖,WPG)与甲基A细胞混合并皮下注射于携带菌群(FB)的BALB/c小鼠(抑制试验)后显示出抗肿瘤活性。以无菌(GF) BALB/c小鼠为宿主时,其抗肿瘤活性明显降低。注射部位的组织学检查显示,在植入wpgmea混合物后第1 ~ 3天,FB和GF小鼠均有大量的多形核白细胞(PMN)浸润和肿瘤细胞变性,但随后在许多GF小鼠中看到肿瘤细胞团块的重新出现,而FB小鼠只有少数。WPG在FB胸腺型nu/nu小鼠中也有类似但稍弱的抑制作用,其中也出现了严重的PMN浸润。结果表明,在抑制实验中,主要由PMN组成的早期炎症反应是主要的效应机制,GF小鼠PMN的抗肿瘤活性低于FB小鼠。然而,由于FB小鼠在再植入过程中表现出抗肿瘤免疫的发展,而非FB nu/nu小鼠,免疫能力的参与可能在抑制效率中发挥了额外的作用。
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引用次数: 17
Bifidobacteria in Broiler Starter Rations: Factors Affecting Survival 肉仔鸡起始饲料中双歧杆菌:影响生存的因素
Pub Date : 1900-01-01 DOI: 10.12938/BIFIDUS1982.13.1_17
S. M. Rose, H. Modler, R. Mckellar
The viability of freeze-dried cells of bifidobacteria (B. thermophilum ATCC 25525) in broiler starter rations was monitored at different storage temperatures during a twelve-week period. A total of five treatments (control plus four bifidogenic factors), at low (1.55% moisture, aw< 0.4) and high water activity (10.52% moisture, aw = 0.64) were included in the study. Results indicated that lower moisture and water activity enhances the survival of bifidobacteria when incorporated into feeds. Refrigeration temperatures (5•Ž and 18•Ž) also increase the survival of bifidobacteria in rations stored for up to twelve weeks. Bifidogenic factors, when included in the feeds, had a limited protective effect on bacterial survival. The use of probiotics, containing bifidobacteria, is an area that needs to be closely evaluated before they can be added to animal rations under commercial condi-
在不同贮藏温度下,对肉仔鸡起始饲料中双歧杆菌(B. thermophilum ATCC 25525)冻干细胞的活力进行了为期12周的监测。试验共设低水分(1.55%水分,aw< 0.4)和高水分(10.52%水分,aw = 0.64) 5个处理(对照加4个双歧因子)。结果表明,饲料中添加较低的水分和水分活性,可提高双歧杆菌的存活率。冷藏温度(5•Ž和18•Ž)也增加了双歧杆菌在口粮中保存长达12周的存活率。当饲料中含有双歧因子时,对细菌存活的保护作用有限。在将含有双歧杆菌的益生菌添加到商业条件下的动物口粮中之前,需要对其使用进行密切评估
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引用次数: 1
Ecology of Bifidobacterium in the Human Intestinal Flora 双歧杆菌在人类肠道菌群中的生态学研究
Pub Date : 1900-01-01 DOI: 10.12938/BIFIDUS1982.6.2_33
M. Mutai, R. Tanaka
In this review, we present the evidence for the establishment and the succession of Bifidobacterium flora in the human intestine and suggest that the number of the Bifidobacterium is the potential marker of the stability of human intestinal flora. The significance of Bifidobacterium with regard to colonization resistance is dicussed .
本文综述了双歧杆菌群在人体肠道内的建立和演替的证据,并提出双歧杆菌的数量是人类肠道菌群稳定性的潜在标志。讨论了双歧杆菌在定植抗性方面的意义。
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引用次数: 71
Metabolism of Drugs by Intestinal Bacteria 肠道细菌对药物的代谢
Pub Date : 1900-01-01 DOI: 10.12938/BIFIDUS1982.11.1_9
K. Kobashi, T. Akao, M. Hattori, T. Namba
Food and drugs orally administered come inevitably in contact with intestinal bacterial flora in gut. The components in food and drugs are digested in the gut and absorbed from the alimentary tract via portal vein and then metabolized or detoxicated in the liver. Thereafter a part of metabolites are excreted into intestine via bile duct and meet again intestinal bacteria. Not only exogeneous substances but also endogenous ones once excreted in the bile come in contact with intestinal bacterial flora. Drugs administered intravenously, intramuscularly or intracutaneously also have chance to meet with intestinal bacteria when once excreted in the bile. Therefore, microflora in the gastrointestinal flora play significant roles in the enterohepatic circulation of drugs and food components. Accordingly, studies on the metabolism of drugs with intestinal microflora are important for research and development of medicines. However, such metabolic studies are very seldom, compared with the studies with liver, kidney, lung and other organs, because of huge numbers and species of anaerobic bacteria and for lack of biochemical studies on anaerobes. Intestinal bacterial flora are an environmental large factor in the body and almost equal to liver in weight and function, though their activities are mostly unknown. Recently, isolation, cultivation and identification techniques of intestinal bacteria from humans and experimental animals have been established. Therefore, metabolisms of food components and drugs with intestinal bacteria are able to be undertaken, based on biochemical and molecular biological backgrounds.
口服食物和药物不可避免地与肠道菌群接触。食物和药物中的成分在肠道内消化,经门静脉从消化道吸收,然后在肝脏代谢或解毒。随后,一部分代谢物经胆管排出肠内,与肠道细菌再次相遇。胆汁中不仅有外源性物质,也有内源性物质与肠道菌群接触。静脉、肌肉或皮内给药的药物一旦进入胆汁排泄,也有机会与肠道细菌相遇。因此,胃肠道菌群中的微生物在药物和食物成分的肠肝循环中起着重要的作用。因此,研究药物在肠道菌群中的代谢对药物的研究和开发具有重要意义。然而,与肝、肾、肺等器官的代谢研究相比,由于厌氧菌数量庞大、种类繁多,且缺乏厌氧菌的生化研究,对厌氧菌的代谢研究很少。肠道菌群是人体的一个重要环境因素,其重量和功能几乎与肝脏相当,尽管它们的活动大多是未知的。近年来,建立了人体和实验动物肠道细菌的分离、培养和鉴定技术。因此,基于生物化学和分子生物学背景,肠道细菌可以进行食物成分和药物的代谢。
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引用次数: 30
Close Association of Streptococcus sanguis Uncommon Serotypes with Behcet's Disease 血链球菌罕见血清型与白塞病密切相关
Pub Date : 1900-01-01 DOI: 10.12938/BIFIDUS1982.9.1_27
E. Isogai, S. Ohno, K. Takeshi, K. Yoshikawa, T. Tsurumizu, H. Isogai, K. Yokota, S. Kotake, Y. Sasamoto, Hashimoto Takashi, Harumi Shimizu, H. Matsuda, N. Fujii, M. Yamaguchi, K. Oguma
This is a description of the role of Streptococcus sanguis in the oral flora of patients with Behcet's disease (BD) in contrast to the flora of healthy controls. The proportion of S. sanguis in the flora of patients with BD was always higher than that of healthy and disease controls. The types of S. sanguis in the oral flora of the BD patients were uncommon ones. Agglutinating antibody titers againstisolated strains of S. sanguis were higher in BD patients than in controls. When S. sanguis antigens were used in skin reaction, the erythema of skin in BD patients was greater than that in healthy controls. It is proposed that uncommon serotypes of S. sanguis may play a role in the pathogenesis of BD.
本文描述了血链球菌在白塞氏病(BD)患者口腔菌群中的作用,并与健康对照组的菌群进行了对比。血链球菌在BD患者菌群中的比例始终高于健康人群和疾病对照组。在BD患者的口腔菌群中,血链球菌的类型并不常见。血链球菌分离株的凝集抗体滴度在BD患者中高于对照组。当血血链球菌抗原用于皮肤反应时,BD患者皮肤红斑明显大于健康对照组。我们认为罕见的血链球菌血清型可能在双相障碍的发病机制中起作用。
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引用次数: 39
Effect of Yogurt and Yogurt Supplemented with Bifidobacterium and/or Lactulose in Healthy Persons: A Comparative Study 酸奶和添加双歧杆菌和/或乳果糖的酸奶对健康人的影响:一项比较研究
Pub Date : 1900-01-01 DOI: 10.12938/BIFIDUS1982.10.2_123
T. Tomoda, Y. Nakano, T. Kageyama
Three types of yogurt supplemented with Bifidobacterium alone, lactulose alone, or both Bifidobacterium and lactulose were fed to healthy persons, who were tested before and after administration. Plain yogurt was fed during a control period. Yogurt containing both Bifidobacterium and lactulose resulted in greater improvement in the form and frequency of feces than the other yogurts. No differences were noted in blood chemistry test results before and after the administration of each type of yogurt. There were no side effects of yogurt administration. The number of Bifidobacterium in the feces increased after the administration of yogurt containing Bifidobacterium and/or lactulose, but there were no differences among the three test yogurts. Not only the administered Bifidobacterium species but also the original Bifidobacterium species was increased by eating Bifidobacterium and lactulose-containing yogurt, but the administered Bifidobacterium species was not increased more than the dominant original species. The ammonia content in the feces decreased more after the administration of Bifidobacteriumand/or lactulose-containing yogurt than after that of plain yogurt but there were no differences among the three test yogurts.
研究人员将三种酸奶分别添加了双歧杆菌、乳果糖或双歧杆菌和乳果糖,分别喂给健康的人,并在给药前后对他们进行测试。在对照期喂食纯酸奶。含有双歧杆菌和乳果糖的酸奶比其他酸奶更能改善粪便的形式和频率。在服用各种酸奶前后,血液化学测试结果没有差异。服用酸奶没有副作用。饲喂含有双歧杆菌和/或乳果糖的酸奶后,粪便中的双歧杆菌数量增加,但三种测试酸奶之间没有差异。食用双歧杆菌和乳果糖酸奶不仅增加了给药双歧杆菌种类,而且增加了原双歧杆菌种类,但给药双歧杆菌种类的增加并不超过优势原双歧杆菌种类。饲喂双歧杆菌酸奶或含乳果糖酸奶后,粪便中氨含量的下降幅度大于普通酸奶,但三种酸奶之间没有差异。
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引用次数: 26
Stress and Intestinal Flora 应激与肠道菌群
Pub Date : 1900-01-01 DOI: 10.12938/BIFIDUS1982.8.1_23
Kunio Suzuki, Y. Kodama, T. Mitsuoka
Selye (18) proposed the following hypothesis : an organism activates its ACTHcorticoid defensive reaction between the pituitary and adrenal gland against a variety of stressors. With the above reaction, the organism builds up a resistance to the stress but simultaneously triggers a series of nonspecific processes e.g. hypertrophy of the adrenal gland, degeneration of the thymus and lymphatic system, ulceration of the stomach and duodenum, and reduction in the body weight. These are collectively referred to as the "general adaptation syndrome." "Stressor," defined as any source of stress, includes biological stressors (fatigue, inanition, bacteria, etc.), physical stressors (cold, heat, drafts, radiation, etc.), chemical stressors (chemicals, toxins, etc.), mental and social stressors (tension, anxiety, crowding, noise, etc.), and other stressors. The hormones secreted as a result of stress, however, are not only ACTH-corticoid but also (ƒÀ-endorphin, ƒÀ-lipotropin,
Selye(18)提出了以下假设:生物体激活垂体和肾上腺之间的促肾上腺皮质激素防御反应,以对抗各种应激源。通过上述反应,机体建立了对应激的抵抗力,但同时引发了一系列非特异性过程,如肾上腺肥大、胸腺和淋巴系统变性、胃和十二指肠溃疡、体重减轻等。这些统称为“一般适应综合征”。“压力源”被定义为任何压力源,包括生物压力源(疲劳、营养不良、细菌等)、物理压力源(冷、热、通风、辐射等)、化学压力源(化学物质、毒素等)、精神和社会压力源(紧张、焦虑、拥挤、噪音等)以及其他压力源。然而,由于压力而分泌的激素不仅是促肾上腺皮质激素,还包括(ƒÀ-endorphin, ƒÀ-lipotropin,
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引用次数: 26
期刊
Bifidobacteria and Microflora
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