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基于Actinomyces ruminicola的微态制剂的体外发酵效果
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作者 白云龙 肖鑫焕 +3 位作者 胡盼 吴凌 夏成 张洪友 《黑龙江畜牧兽医》 CAS 北大核心 2016年第11期120-123,共4页
为了研制一种新的微生态制剂,试验利用分离得到的瘤胃厌氧菌Actinomyces ruminicola(命名为NY2)与痤疮丙酸杆菌混合制成微生态制剂进行体外发酵,研究微生态制剂的体外发酵特性及产挥发性脂肪酸的能力,确定微生态制剂中Actinomyces rumin... 为了研制一种新的微生态制剂,试验利用分离得到的瘤胃厌氧菌Actinomyces ruminicola(命名为NY2)与痤疮丙酸杆菌混合制成微生态制剂进行体外发酵,研究微生态制剂的体外发酵特性及产挥发性脂肪酸的能力,确定微生态制剂中Actinomyces ruminicola与痤疮丙酸杆菌的最佳混合比例。结果表明:当微生态制剂中Actinomyces ruminicola与痤疮丙酸杆菌混合比为1∶1时,培养瓶中乙酸、丙酸、丁酸和总挥发性脂肪酸的浓度最高值分别达到91.07,41.12,27.58,169.19 mmol/L。该比例微生态制剂可保持瘤胃内容物pH值在6.0左右波动,有利于瘤胃微生物发酵,并能促进乙酸、丙酸等挥发性脂肪酸的生成。 展开更多
关键词 actinomyces ruminicola 微生态制剂 体外发酵特性 挥发性脂肪酸 瘤胃微生物
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Separation and Screening of Biocontrol Actinomyces against Alfalfa Root Rot
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作者 王兰英 徐林波 +1 位作者 何勇 乌兰巴特尔 《Plant Diseases and Pests》 CAS 2010年第2期10-12,37,共4页
[Objective] Actinomycetes with high antagonistic effects on alfalfa root rot pathogen was isolated from 10 soil samples in Chifeng Inner Mongolia. [Method] 91 actinomyces were separated from 10 soil samples in Chifeng... [Objective] Actinomycetes with high antagonistic effects on alfalfa root rot pathogen was isolated from 10 soil samples in Chifeng Inner Mongolia. [Method] 91 actinomyces were separated from 10 soil samples in Chifeng Inner Mongolia by gradient dilution separation method. In duel culture tests, all isolates were tested for their antagonism by using 3 strains including Fusarium solani, F. oxysoporum, F. avenaceum of alfalfa root rot pathogenic bacteria as indicator strains. [Result] 5 strains with strong antagonistic effect on tested alfalfa root rot pathogen were obtained from No.1, No.4, No.6 and No.7 soil samples which were numbered 1-3-6, 4-4-2, 6-2-27 and 7-2-13 respectively, accounted for 5.50% in separated strains. [Conclusion] This study laid certain foundation for biological control of alfalfa root rot disease. 展开更多
关键词 actinomyces Antagonistic effect ALFALFA Root rot
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Isolation and Identification Methods for Actinomyces israelii Involved in Actinomycosis
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作者 Osamu Tsuzukibashi Akira Fukatsu +7 位作者 Mana Fuchigami Satoshi Uchibori Chiaki Komine Koji Umezawa Sachiyo Hayashi Takashi Asano Taira Kobayashi Masahiko Fukumoto 《Open Journal of Stomatology》 2022年第4期108-118,共11页
Purpose: Actinomyces israelii is known as the key species to cause classical actinomycosis. Although A. israelii is frequently isolated from human oral cavities, the distribution of this microorganism has been little ... Purpose: Actinomyces israelii is known as the key species to cause classical actinomycosis. Although A. israelii is frequently isolated from human oral cavities, the distribution of this microorganism has been little reported. The purpose of the present study was to develop selective media (AISM) for the isolation of A. israelii and to assess the prevalence of this organism in the oral cavity. Methods: To examine the bacterial population in the oral cavity, a novel selective medium (AISM) was developed for isolating A. israelii. AISM consists of BHI, yeast extract, agar, ofloxacin, fosfomycin, colistin, and sodium fluoride. Results: A. israelii strains grew well on AISM. A. israelii was detected in all dental plaque samples collected from 20 subjects and the mean number of this organism in the samples was 7.9 × 104 CFU/ml. Conclusion: These results indicated that the selective medium was useful for the isolation of A. israelii and this organism was a part of the normal flora in the human oral cavity. 展开更多
关键词 actinomyces israelii Selective Medium Oral Cavity ACTINOMYCOSIS
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林可霉素产生菌:Actinomyces roseolus的变异
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作者 卢圣栋 《国际药学研究杂志》 CAS 1975年第2期124-124,共1页
本文用自然分离方法阐明林可霉素产生菌Actinomyces roseolus 981的自然变异与产量的关系。为了说明该菌株的变异性,试验了16种培养基。在黄豆饼培养基上该菌株变异性的出现率最高,故该培养基被用于变异研究。Гаузе1号培养基出现... 本文用自然分离方法阐明林可霉素产生菌Actinomyces roseolus 981的自然变异与产量的关系。为了说明该菌株的变异性,试验了16种培养基。在黄豆饼培养基上该菌株变异性的出现率最高,故该培养基被用于变异研究。Гаузе1号培养基出现变异最小,因而用于菌种保藏。 展开更多
关键词 菌落直径 actinomyces roseolus 原放线菌 林可霉素产生菌 变异性
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基于Actinomyces ruminicola的微生态制剂对瘤胃发酵的影响 被引量:1
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作者 白云龙 肖鑫焕 +4 位作者 胡盼 吴凌 夏成 张洪友 徐闯 《中国生物制品学杂志》 CAS CSCD 2016年第4期369-373,共5页
目的探讨基于Actinomyces ruminicola的微生态制剂对瘤胃发酵的影响。方法将分离得到的能生成挥发性脂肪酸(volatile fatty acid,VFA)的瘤胃厌氧菌Actinomyces ruminicola(命名为NY2,以下简写为Ar)与痤疮丙酸杆菌(以下简写为Pa)按... 目的探讨基于Actinomyces ruminicola的微生态制剂对瘤胃发酵的影响。方法将分离得到的能生成挥发性脂肪酸(volatile fatty acid,VFA)的瘤胃厌氧菌Actinomyces ruminicola(命名为NY2,以下简写为Ar)与痤疮丙酸杆菌(以下简写为Pa)按3种比例混合制成微生态制剂(M1:Ar∶Pa=2∶3;M2:Ar∶Pa=1∶1;M3:Ar∶Pa=3∶2),进行羊体内发酵试验,分别于饲喂后0、2、4、6、8、10、12和24 h无菌采集各组羊的瘤胃液,用精密p H检测仪测定瘤胃液的酸碱度;Waters2695液相色谱仪测定瘤胃液中VFA(主要是乙酸、丙酸和丁酸)的含量。结果各组瘤胃液的p H值均呈先下降后升高的趋势;M2组瘤胃液的p H值与M1和M3组差异有统计学意义(P均〈0.05)。当微生态制剂中Ar∶Pa=1∶1,饲喂4-6 h后,瘤胃液中乙酸、丙酸、丁酸和总VFA的浓度均达最高,分别为(82.49±2.51)、(35.12±1.69)、(22.92±1.02)和(139.81±5.61)mmol/L,该比例的微生态制剂可保持瘤胃内容物p H在6.0-7.0之间波动。结论本实验制备的微生态制剂有利于瘤胃微生物发酵,能促进乙酸、丙酸等VFA的生成,为今后该瘤胃微生态制剂的应用奠定了基础。 展开更多
关键词 actinomyces ruminicola 痤疮丙酸杆菌 微生态制剂 瘤胃发酵 挥发性脂肪酸
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一株瘤胃厌氧菌Actinomyces ruminicola的分离鉴定 被引量:5
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作者 胡盼 夏成 +2 位作者 吴凌 欧海龙 王晓旭 《中国微生态学杂志》 CAS CSCD 2009年第9期809-811,共3页
目的从健康奶牛瘤胃液中分离、筛选出1株以产乙酸为主的Actinomyces ruminicola。方法无菌采取装有瘤胃瘘奶牛的瘤胃液,按照厌氧菌分离步骤,通过Actinomyces ruminicola的特异性培养基进行筛选,提取分离菌的基因组DNA,克隆其16S rRNA基... 目的从健康奶牛瘤胃液中分离、筛选出1株以产乙酸为主的Actinomyces ruminicola。方法无菌采取装有瘤胃瘘奶牛的瘤胃液,按照厌氧菌分离步骤,通过Actinomyces ruminicola的特异性培养基进行筛选,提取分离菌的基因组DNA,克隆其16S rRNA基因,进行序列测定,分离出1株Actinomyces ruminicola。结果通过形态学观察、生化反应和序列分析证实所分离的1株产乙酸的杆菌为Actinomyces ruminicola。结论从健康牛瘤胃液中成功分离出1株Actinomyces ruminicola,为进一步研究其对瘤胃发酵的影响奠定了基础。 展开更多
关键词 瘤胃 actinomyces ruminicola 分离鉴定
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Esophagitis Due to Actinomycosis in an Immunocompetent Patient with a History of SARS-Cov-2 Infection: Case Report
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作者 Zamora Harvey Hernández Gustavo González Melina 《Open Journal of Gastroenterology》 2023年第10期313-318,共6页
We present an unusual case of esophageal actinomycosis that developed in a patient with normal immunity and a history of acute SARS-CoV-2 infection. We report a case of a 56-year-old female patient without chronic deg... We present an unusual case of esophageal actinomycosis that developed in a patient with normal immunity and a history of acute SARS-CoV-2 infection. We report a case of a 56-year-old female patient without chronic degenerative pathologies with a history of non-severe acute SARS-CoV-2 infection that occurred two months prior to her presentation, treated with prednisone and betamethasone orally and inhaled, respectively for 21 days. The pivotal symptom is dysphagia and definitive diagnosis requires a tissue culture of the affected organ or a biopsy that shows the classic sulfur granules. Currently, antibiotic treatment with beta-lactams, such as amoxicillin/clavulanic acid, is still effective, as it was in our patient. 展开更多
关键词 actinomyces ACTINOMYCOSIS ESOPHAGITIS SARS-CoV-2 IMMUNOCOMPETENT
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Study on Marine actinomycetes and analysis of their secondary metabolites
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作者 Bao-Liang Xu Yuan-Yuan Wang Chun-Ming Dong 《Life Research》 2023年第4期1-15,共15页
Actinomycetes are relatively prevalent bacteria in the ocean,constituting 9% of the total number of marine bacteria.The advancement of science and technology has led to a more profound exploration of marine actinomyce... Actinomycetes are relatively prevalent bacteria in the ocean,constituting 9% of the total number of marine bacteria.The advancement of science and technology has led to a more profound exploration of marine actinomycetes.These studies hold immense significance in comprehending the distribution and adaptation of marine actinomycetes within the oceanic environment,as well as uncovering new secondary metabolites.Based on differing lifestyles,marine actinomycetes can be categorized as free-living or co-epiphytic.The activity and metabolism of actinomycetes vary across diverse marine settings,including the deep sea,benthic regions,and marine organisms.Due to their distinctive biological traits and genetic background,these marine actinomycetes inevitably generate metabolites possessing unique structures.Research methodologies concerning marine actinomycetes predominantly encompass traditional pure culture techniques,molecular biology approaches,and the integration of metagenomics and bioinformatics.The exploration of varied methodologies proves pivotal for the analysis of metabolite processes.Through the cultivation of marine actinomycetes,numerous compounds featuring novel structures and significant activities have been isolated,furnishing a substantial foundation for new drug investigations.These encompass,but are not restricted to,peptides,antibiotics,terpenoids,ketones,quinones,macrolides,and pigments.The potential applications of marine actinomyces and their secondary metabolites extend beyond antibacterial and anti-tumor effects,exhibiting promising prospects in antifungal and antiviral domains.This paper provides a comprehensive review of the classification,resources,research methodologies,and habitats of marine actinomycetes.Furthermore,it delves into the classification of secondary metabolites and their functional activities,facilitating a more exhaustive analysis of the secondary metabolites produced by marine actinomycetes. 展开更多
关键词 Marine actinomyces secondary metabolites research method functional activity
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Dynamic of Soil Microorganisms from Root Region of Ginseng with Different Growing Years 被引量:16
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作者 李勇 刘时轮 +2 位作者 易茜茜 傅俊范 丁万隆 《Agricultural Science & Technology》 CAS 2009年第6期141-143,共3页
Objective To see the dynamic of fungi, bacilli and actinomyces communities from root region of ginseng with different growing years.Method With ginseng root region soils from several sampling sites of Jilin Province a... Objective To see the dynamic of fungi, bacilli and actinomyces communities from root region of ginseng with different growing years.Method With ginseng root region soils from several sampling sites of Jilin Province as materials, concentrations of fungi, bacilli and antinomyces were evaluated by spread-plate method. Result Though there are differences on statistic data among soil samples, commonly with the increasing of growing years, concentration of fungi in ginseng root region increased, which were on the contrary for bacilli and antinomyces, and bacilli changed even more significant than antinomyces. Conclusion Concentrations of soil microorganisms can be influenced by soil type, planting mode and growing years simultaneously, but growing years influenced even more significantly. 展开更多
关键词 GINSENG Root region soil FUNGI BACILLI actinomyces
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Actinomycosis of the appendix mimicking appendiceal tumor:A case report
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作者 Sang-Yun Lee Hee-Jin Kwon +6 位作者 Jin-Han Cho Jong-Young Oh Kyung-Jin Nam Jin-Hwa Lee Seong-Kuk Yoon Myong-Jin Kang Jin-Sook Jeong 《World Journal of Gastroenterology》 SCIE CAS CSCD 2010年第3期395-397,共3页
Actinomycosis is an uncommon chronic infectious disease. Common sites of involvement include the cervicofacial, thoracic and abdominopelvic regions. In abdominopelvic actinomycosis, the ileocecal region, including the... Actinomycosis is an uncommon chronic infectious disease. Common sites of involvement include the cervicofacial, thoracic and abdominopelvic regions. In abdominopelvic actinomycosis, the ileocecal region, including the appendix, is the most commonly involved site. In some reports, limited appendiceal actinomycosis has revealed a thickened appendiceal wall with peri-appendiceal inflammation as acute appendicitis or perforated appendicitis. We experienced pathologically confirmed intraluminal limited appendiceal actinomycosis without peri-appendiceal infiltration. Here, we report the computed tomography and ultrasound findings. 展开更多
关键词 actinomyces ACTINOMYCOSIS Appendiceal neoplasms APPENDICITIS
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Preliminary Study towards Enhanced Crude Oil Biodegradation Reveals Congeneric Total Peroxidases with Striking Distinctions
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作者 Folasade M. Olajuyigbe Kevin I. Ehiosun Kikelomo F. Jaiyesimi 《Advances in Enzyme Research》 2015年第3期66-74,共9页
Peroxidases (POXs) are the key extracellular enzymes produced by crude oil degrading microbes. Knowledge of optimum conditions for POXs activity is crucial for providing effective environment for bioremediation. In th... Peroxidases (POXs) are the key extracellular enzymes produced by crude oil degrading microbes. Knowledge of optimum conditions for POXs activity is crucial for providing effective environment for bioremediation. In this study, physicochemical properties of POXs produced by Actinomyces israelii and Actinomyces viscosus during growth on crude oil were studied. The POXs exhibited similarities in activity and stability with striking differences in response to two divalent metal ions. The POXs from both species had optimum pH of 7.0 and were very stable over a narrow pH range (6.0 - 8.0). The POXs demonstrated similar thermostability exhibiting relative residual activity of 62% at 50°C after 30 min incubation and 45% residual activity at the same temperature after 60 min despite the fact that POXs from A. viscosus and A. israelii had optimum temperatures of 50°C and 40°C, respectively. The POXs from A. viscosus and A. israelii were greatly activated by Fe2+ at 5.0 and 10.0 mM. The enzymes were both strongly inhibited by Cu2+, Mg2+ and Hg2+. Surprisingly, these congeneric POXs demonstrated striking differences in their response to Ca2+ and Mn2+. POX from A. viscosus was activated by Ca2+ and Mn2+ exhibiting relative activity of 136% and 106% at 5 mM, respectively. In contrast, POX from A. israelii was strongly inhibited by Ca2+ and Mn2+ exhibiting 62.5% relative activity in the presence of 5 mM of each metal ion. Increasing the concentration of Ca2+ and Mn2+ led to further activation of POX from A. viscosus and inhibition of POX from A. israelii. Results provide deeper insights into functional properties of studied POXs from closely related microbes. The physicochemical properties are very similar;however, notable differences provide a strong basis for structural characterization of these congeneric enzymes. 展开更多
关键词 actinomyces israelii actinomyces viscosus BIOREMEDIATION Congeneric Enzymes CRUDE Oil PEROXIDASES
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Pathogen of root surface caries in the elderly
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作者 张廷发 张玉幸 +1 位作者 张春梅 杨圣辉 《Chinese Medical Journal》 SCIE CAS CSCD 2001年第7期95-96,111,共3页
Abstract:Objective To study the pathogen of root surface caries in the elderly. Methods Plaque samples from the experimental group and the control group were collected. After culturing in selective and non-selective m... Abstract:Objective To study the pathogen of root surface caries in the elderly. Methods Plaque samples from the experimental group and the control group were collected. After culturing in selective and non-selective media, the different bacteria were isolated. The counts and the positive rates of total bacteria, porphyromonas group, pervotella group, streptococcus mutants group, actinomyces group and lactobacillus group were compared.Results The counts of total bacteria, streptococcus mutants, actinomyces and lactobacillus of the experimental group were higher than those of the control group. The positive rates of actinomyces and lactobacillus of the experimental group were significantly higher than those of the control group. Conclusion Actinomyces and lactobacillus are the main related pathogens of root surface caries in the elderly. 展开更多
关键词 root surface caries · actinomyces · lactobacillus · streptococcus mutants
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