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Actinomycosis of the appendix mimicking appendiceal tumor:A case report

World Journal of Gastroenterology 2010年第3期16卷 395-397页

作者： Sang-Yun Lee Hee-Jin Kwon Jin-Han Cho Jong-Young Oh Kyung-Jin Nam Jin-Hwa Lee Seong-Kuk Yoon Myong-Jin Kang Jin-Sook Jeong Department of Radiology Dong-A University Hospital Department of Pathology Dong-A University Hospital

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.

关键词： actinomyces Actinomycosis Appendiceal neoplasms Appendicitis

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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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Open Journal of Gastroenterology 2023年第10期13卷 313-318页

作者： Zamora Harvey Hernández Gustavo González Melina General Surgery Department ISSSTE Tepic General Hospital APP Tepic México Departamento de Medicina Interna ISSSTE Tepic General Hospital APP Tepic México Gastrointestinal Endoscopy Unit Puerta de Hierro Hospital Tepic México

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.

关键词： actinomyces Actinomycosis Esophagitis SARS-CoV-2 Immunocompetent

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基于actinomyces ruminicola的微生态制剂对瘤胃发酵的影响

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中国生物制品学杂志 2016年第4期29卷 369-373页

作者：白云龙肖鑫焕胡盼吴凌夏成张洪友徐闯黑龙江八一农垦大学动物科技学院黑龙江大庆163319

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... 详细信息

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。

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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基于actinomyces ruminicola的微态制剂的体外发酵效果

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黑龙江畜牧兽医 2016年第11期 120-123页

作者：白云龙肖鑫焕胡盼吴凌夏成张洪友黑龙江八一农垦大学动物科技学院黑龙江大庆163319

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... 详细信息

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。

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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一株瘤胃厌氧菌actinomyces ruminicola的分离鉴定

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中国微生态学杂志 2009年第9期21卷 809-811页

作者：胡盼夏成吴凌欧海龙王晓旭黑龙江八一农垦大学动物科技学院大庆163319

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... 详细信息

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。

关键词：瘤胃 actinomyces ruminicola 分离鉴定

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Preliminary Study towards Enhanced Crude Oil Biodegradation Reveals Congeneric Total Peroxidases with Striking Distinctions

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Advances in Enzyme Research 2015年第3期3卷 66-74页

作者： Folasade M. Olajuyigbe Kevin I. Ehiosun Kikelomo F. Jaiyesimi Enzyme Biotechnology Unit Department of Biochemistry Federal University of Technology Akure Nigeria

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.

关键词： actinomyces israelii actinomyces viscosus Bioremediation Congeneric Enzymes Crude Oil Peroxidases

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Screening of antagonistic actinomyces against Fusarium oxysporum f.sp.cubense race 4 and identification of strain Da07210

Screening of antagonistic actinomyces against Fusarium oxysp...

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2012年海南省微生物学会学术年会

作者： Jun Zhu Bo Chen Hui-qing Huang Min Liu Ye-hui Zheng Shi-xiang Bao Key Laboratory of Tropical Crop Biotechnology Ministry of Agriculture/Institute of Tropical Bioscience and BiotechnologyChinese Academy of Tropical Agricultural Sciences

Using Fusarium oxysporum f.***.cubense race 4 as target strain,antagonistic actinomycete strains were screened from the soil of Yingeling virgin forest and the healthy plants of diseased orchards in Hainan province.Among them strain Da07210 possessed prominent bioactivity and genetic stabilization.On the basis of morphology, physiological and biochemical properties,16S rDNA and phylogenetic tree,the strain was identified as Streptomyces noursei.

关键词： Fusarium oxysporum f.sp.cubense antagonistic actinomyces screening identification

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