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Journal articles on the topic 'Gram-negative pleomorphic rods'

Author: Grafiati

Published: 4 June 2021

Last updated: 18 February 2022

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1

Soares, Janir Alves, and Donaldo Rosa Pires Júnior. "Influence of sodium hypochlorite-based irrigants on the susceptibility of intracanal microbiota to biomechanical preparation." Brazilian Dental Journal 17, no. 4 (2006): 310–16. http://dx.doi.org/10.1590/s0103-64402006000400009.

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This study evaluated the microbiological conditions of root canals, using smears and culture from anterior teeth and premolars with necrotic pulps associated with chronic periapical pathologies, before and after biomechanical preparation (BMP). During double-flared instrumentation, 1, 2.5 and 5% sodium hypochlorite (NaOCl)-based irrigants were used in 3 groups: GI (n=39), GII (n=36) and GIII (n=36), respectively. Before BMP, all cultures were positive and the smears showed microbiologically diverse morphotypes, including fusiforms, pleomorphic, rods, cocci and filaments. Quantitetively, 20, 20

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2

Petrov, Anton G., Milena D. Karcheva, Teodora V. Marinova-Balgaranova, Rositsa V. Petrova, and Verena K. Vasileva. "Vaginal Bacterial Profile in Pregnant Women." Journal of Biomedical and Clinical Research 14, no. 1 (2021): 82–90. http://dx.doi.org/10.2478/jbcr-2021-0009.

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Summary This study aimed to determine the bacterial profile of vaginal samples from pregnant women and the prevalence of identified microorganisms. Materials and methods: A prospective epidemiological study was conducted on 150 pregnant women admitted to the Clinic of Obstetrics and Gynecology at Dr. G. Stranski University Hospital in Pleven. Vaginal secretion samples were collected from all the 150 women. Direct microscopy of native smears prepared by the wet mount method to detect Trichomonas vaginalis and direct microscopy of Gram-stained smears was performed. Aerobic culture studies were c

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3

Urios, Laurent, Valérie Michotey, Laurent Intertaglia, Françoise Lesongeur, and Philippe Lebaron. "Thalassobaculum salexigens sp. nov., a new member of the family Rhodospirillaceae from the NW Mediterranean Sea, and emended description of the genus Thalassobaculum." International Journal of Systematic and Evolutionary Microbiology 60, no. 1 (2010): 209–13. http://dx.doi.org/10.1099/ijs.0.011460-0.

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A novel Gram-negative bacteria, named CZ41_10aT, was isolated from coastal surface waters of the north-western Mediterranean Sea. Cells were motile, pleomorphic rods, 1.6 μm long and 0.7 μm wide and formed cream colonies on marine agar medium. The G+C content of the genomic DNA was 65 mol%. Phylogenetic analysis of 16S rRNA gene sequences placed the new isolate in the genus Thalassobaculum, a member of the family Rhodospirillaceae, class Alphaproteobacteria. Unlike Thalassobaculum litoreum CL-GR58T, its closest relative, strain CZ41_10aT was unable to grow anaerobically and did not exhibit nit

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4

Rossi, Alessandro, and Mark A. Fisher. "Characterization of six clinical isolates of Chimaeribacter gen. nov., a novel genus related to the Yersiniaceae family and the three species Chimaeribacter arupi sp. nov., Chimaeribacter coloradensis sp. nov, and Chimaeribacter californicus sp. nov." International Journal of Systematic and Evolutionary Microbiology 70, no. 4 (2020): 2703–12. http://dx.doi.org/10.1099/ijsem.0.004094.

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Eight genetically related, Gram-negative bacterial strains, isolated from clinical specimens between 2012 and 2016, were submitted to arup Laboratories for species identification. The lack of species- or genus-level matches in curated 16S rRNA gene databases prompted us to undertake the polyphasic characterization of these so far undescribed organisms. Six isolates available for additional testing were oxidase negative, catalase positive, pleomorphic, Gram-negative rods displaying temperature-dependent motility and producing yellow-pigmented colonies with three distinct morphotypes: medium-siz

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5

Zhang, Guishan, Xiaoyan Dong, Yingjiao Sun, et al. "Haloferax profundi sp. nov. and Haloferax marisrubri sp. nov., Isolated from the Discovery Deep Brine-Seawater Interface in the Red Sea." Microorganisms 8, no. 10 (2020): 1475. http://dx.doi.org/10.3390/microorganisms8101475.

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Two extremely halophilic archaeal strains, designated SB29T and SB3T, were isolated from the brine-seawater interface of Discovery Deep in the Red Sea. Cells of both strains were pleomorphic (irregular polyhedrals, ovals, and rods) and stained Gram-negative; colonies were pigmented pink. The sequence similarity of the 16S rRNA gene of strain SB29T with that of its most closely related validly described species (Hfx. sulfurifontis DSM 16227T) and that of strain SB3T with its closest validly described relative (Hfx. denitrificans ATCC 35960T) was 98.1% and 98.6%, respectively. The incomplete dra

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6

Roalkvam, Irene, Florian Bredy, Tamara Baumberger, Rolf-B. Pedersen, and Ida Helene Steen. "Hypnocyclicus thermotrophus gen. nov., sp. nov. isolated from a microbial mat in a hydrothermal vent field." International Journal of Systematic and Evolutionary Microbiology 65, Pt_12 (2015): 4521–25. http://dx.doi.org/10.1099/ijsem.0.000606.

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The bacterial strain, IR-2T, was isolated from a microbial mat sampled near a hydrothermal vent in the Greenland Sea. Phylogenetic analysis, based on the 16S rRNA gene, showed that the closest relatives of IR-2T were Ilyobacter tartaricus, Ilyobacter insuetus, Propionigenium modestum and Fusobacterium varium (91 % 16S rRNA gene sequence similarity). The cells of the novel strain were Gram-stain-negative and pleomorphic; changing from long motile rods to non-motile ring structures during the growth cycle. Growth occurred at 20–55 °C (optimally at 48 °C), with 1–6 % (w/v) NaCl (optimally with 2

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7

Gagné, A., M. Chicoine, A. Morin, and A. Houde. "Phenotypic and genotypic characterization of esterase-producingUreibacillus thermosphaericusisolated from an aerobic digestor of swine waste." Canadian Journal of Microbiology 47, no. 10 (2001): 908–15. http://dx.doi.org/10.1139/w01-096.

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Eight closely related thermophilic strains were isolated from an aerobic and thermophilic treatment of swine wastes. The pleomorphic cells (short and long rods; cocci) showed peritrichous flagella, terminally swollen sporangium, and liberated spores exhibiting hairy appendages. The Gram reaction was negative for both young (4 h) and old (48 h) cultures. Several features, such as colonial morphology, growth between 35°C and 65°C, presence of catalase, presence of spores, and strictly aerobic metabolism (except for one strain), are similar to those found for the genus Bacillus. The inability of

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8

Zheng, Min-ling, Liang-hui Li, Bin Liu, et al. "Haemophilus seminalis sp. nov., isolated from human semen." International Journal of Systematic and Evolutionary Microbiology 70, no. 4 (2020): 2588–95. http://dx.doi.org/10.1099/ijsem.0.004074.

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Two Haemophilus -like isolates with similar biochemical characteristics, designated strains SZY H1T and SZY H2, were isolated from human semen specimens. Cells were Gram-negative, non-motile, non-acid-fast, pleomorphic rods or coccobacilli. The major fatty acids (>10 %) were C16 : 0, C14 : 0, iso-C16 : 0 and/or C14 : 0 3-OH and C16 : 1 ω6c and/or C16 : 1 ω7c. The polar lipids were determined to be phosphatidylethanolamine, phosphatidylglycerol, an unidentified phospholipid, an unidentified aminophospholipid, two unidentified polar lipids and four unidentified aminolipids. The major polyamin

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9

Yuan, Pan-Pan, Wei-Tao Ye, Jia-Xiang Pan, Dong Han, Wen-Jiao Zhang, and Heng-Lin Cui. "Halorussus amylolyticus sp. nov., isolated from an inland salt lake." International Journal of Systematic and Evolutionary Microbiology 65, Pt_10 (2015): 3734–38. http://dx.doi.org/10.1099/ijsem.0.000487.

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A halophilic archaeal strain, YC93T, was isolated from Yuncheng salt lake in Shanxi Province, China. Cells were pleomorphic rods, stained Gram-negative and formed light-red-pigmented colonies on agar plates. Strain YC93T was able to grow at 25–50 °C (optimum 37 °C), with 1.4–4.8 M NaCl (optimum 2.0 M), with 0–1.0 M MgCl2 (optimum 0.05 M) and at pH 6.0–9.5 (optimum pH 7.0). Cells lysed in distilled water and the minimal NaCl concentration to prevent cell lysis was 8 % (w/v). 16S rRNA gene sequence analysis revealed that strain YC93T had two dissimilar 16S rRNA genes both of which were phylogene

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10

Winther, Mette, Hanne Sortsøe Jensen, Irene Harder Tarpgaard, and Hans Linde Nielsen. "Case report: A fatal case of aortic and mitral valve endocarditis caused by Streptobacillus moniliformis." European Heart Journal - Case Reports 4, no. 5 (2020): 1–6. http://dx.doi.org/10.1093/ehjcr/ytaa254.

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Abstract Background Infective endocarditis (IE) secondary to rat-bite fever (RBF) is rare but potentially lethal. Rapid diagnosis is of utmost prognostic importance. However, the diagnosis of RBF is challenging because Streptobacillus moniliformis does not grow under conventional culture conditions. Case summary A 65-year-old male without previous cardiac history presented with sudden onset of balance problems and facial palsy. For 2 weeks, he had experienced intermittent fever and myalgia. Transoesophageal echocardiography (TOE) revealed severe mitral and aortic valve IE with aortic root absc

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11

Yuan, Pan-Pan, Wen-Jiao Zhang, Dong Han, and Heng-Lin Cui. "Haloarchaeobius salinus sp. nov., isolated from an inland salt lake, and emended description of the genus Haloarchaeobius." International Journal of Systematic and Evolutionary Microbiology 65, Pt_3 (2015): 910–14. http://dx.doi.org/10.1099/ijs.0.000038.

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The halophilic archaeal strain, YC82T, was isolated from Yuncheng salt lake in Shanxi, PR China. Cells from strain YC82T were Gram-stain negative, pleomorphic rods, which lysed in distilled water and formed light-red colonies on solid media. Strain YC82T grew at 25–50 °C (optimum 37 °C), in 1.4–4.8 M NaCl (optimum 2.0 M), in 0–1.0 M MgCl2 (optimum 0.05 M) and at pH 6.0–9.5 (optimum pH 7.5). The major polar lipids of strain YC82T were phosphatidic acid, phosphatidylglycerol, phosphatidylglycerol phosphate methyl ester, phosphatidylglycerol sulfate and three glycolipids, which were chromatograph

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12

Liu, Qin, Min Ren, and Li-Li Zhang. "Natribaculum breve gen. nov., sp. nov. and Natribaculum longum sp. nov., halophilic archaea isolated from saline soil." International Journal of Systematic and Evolutionary Microbiology 65, Pt_2 (2015): 604–8. http://dx.doi.org/10.1099/ijs.0.060541-0.

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Two halophilic archaeal strains, TRM20010T and TRM20345T, were isolated from saline soil of the Lop Nur region in Xinjiang, north-west China. Cells from the two strains were pleomorphic rods, stained Gram-negative and produced red-pigmented colonies. Strains TRM20010T and TRM20345T were able to grow at 30–62 °C (optimum 37 °C), 0.9–5.1 M NaCl (optimum 2.6 and 3.4 M, respectively) and pH 6.0–10.0 (optimum pH 7.0−7.5) and neither strain required Mg2+ for growth. The major polar lipids of the two strains were phosphatidylglycerol (PG), phosphatidylglycerol phosphate methyl ester (PGP-Me), two gly

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13

Volokhov, Dmitriy V., Jochen Blom, Megan Amselle, et al. "Oceanivirga miroungae sp. nov., isolated from oral cavity of northern elephant seal (Mirounga angustirostris)." International Journal of Systematic and Evolutionary Microbiology 70, no. 5 (2020): 3037–48. http://dx.doi.org/10.1099/ijsem.0.004127.

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Two independent strains of a Leptotrichia species (ES3154-GLUT and ES2714_GLU) were isolated from the oral cavity of northern elephant seals (Mirounga angustirostris) that were admitted to The Marine Mammal Centre facilities in California, USA. The strains were isolated from oral swabs by cultivation in PPLO broth supplemented with serum, penicillin and colistin in anaerobic conditions. The strains were Gram-negative, pleomorphic, indole-, oxidase- and catalase-negative, non-spore-forming, non-motile rods/coccobacilli in short chains. The 16S rRNA gene sequence of these strains shared 94.42 %

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14

Nagai, Fumiko, Masami Morotomi, Yohei Watanabe, Hiroshi Sakon, and Ryuichiro Tanaka. "Alistipes indistinctus sp. nov. and Odoribacter laneus sp. nov., common members of the human intestinal microbiota isolated from faeces." International Journal of Systematic and Evolutionary Microbiology 60, no. 6 (2010): 1296–302. http://dx.doi.org/10.1099/ijs.0.014571-0.

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Two anaerobic, non-spore-forming, non-motile, Gram-negative-staining bacteria, strains YIT 12060T and YIT 12061T, were isolated from human faeces. Cells of strain YIT 12060T were coccoid to rod-shaped with round ends, positive for catalase, negative for indole and oxidase production, produced succinic and acetic acids as end products of glucose metabolism in peptone/yeast extract/glucose medium and had a DNA G+C content of 55.2 mol%. The main respiratory quinones were MK-10 (40 %) and MK-11 (57 %). Fatty acid analysis demonstrated the presence of a high concentration of iso-C15 : 0 (56 %). Fol

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15

Zhang, Wen-Jiao, and Heng-Lin Cui. "Halomicroarcula salina sp. nov., isolated from a marine solar saltern." International Journal of Systematic and Evolutionary Microbiology 65, Pt_5 (2015): 1628–33. http://dx.doi.org/10.1099/ijs.0.000150.

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Halophilic archaeal strain YGHS18T was isolated from the Yinggehai marine solar saltern near Shanya city of Hainan Province, China. Cells from the strain were observed to be pleomorphic rods, stained Gram-negative, and formed red-pigmented colonies on solid media. Strain YGHS18T was found to be able to grow at 20–50 °C (optimum 37 °C), with 0.9–4.8 M NaCl (optimum 2.1 M) and at pH 5.5–9.0 (optimum pH 7.0). The cells lysed in distilled water and the minimum NaCl concentration to prevent cell lysis was found to be 0.9 M. The major polar lipids of the strain were identified as phosphatidylglycero

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16

Cui, Heng-Lin, Xin Yang, Xia Gao, and Xue-Wei Xu. "Halobellus clavatus gen. nov., sp. nov. and Halorientalis regularis gen. nov., sp. nov., two new members of the family Halobacteriaceae." International Journal of Systematic and Evolutionary Microbiology 61, no. 11 (2011): 2682–89. http://dx.doi.org/10.1099/ijs.0.025841-0.

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Four halophilic archaeal strains, designated TNN18T, TBN12, TNN28T and TBN19, were isolated from brines sampled from two artificial marine solar salterns in eastern China. Strains TNN18T and TNN28T were isolated from the Tainan marine solar saltern, whereas strains TBN12 and TBN19 were from the Taibei marine solar saltern. Colonies of the four strains were red-pigmented and their cells were pleomorphic, motile, Gram-reaction-negative rods. Strains TNN18T and TBN12 were able to grow at 25–50 °C (optimum 37 °C), in 10–30 % (w/v) NaCl (optimum 15 %), with 0–1.0 M MgCl2 (optimum 0.05 M) and at pH

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17

Fatima, Syeda A., Abigail E. Goen, and Kyle S. MacLea. "Draft Genome Sequence of Xanthobacter tagetidis ATCC 700314T." Microbiology Resource Announcements 8, no. 28 (2019). http://dx.doi.org/10.1128/mra.00242-19.

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Xanthobacter tagetidis is a thiophene-degrading bacterium associated with root balls of the plant genus Tagetes, which includes marigolds. It is a Gram-negative facultatively autotrophic bacterium with pleomorphic morphology exhibiting bent and branching rods. From strain TagT2CT (= ATCC 700314T), we report a genome assembly of 4,945,221 bp and a 69.5% G+C content.

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18

"Fruit Bronzing, a New Disease Affecting Jackfruit Caused by (Smith) Mergaert Pantoea stewartii et al." Annals of Tropical Research, April 14, 2014, 17–31. http://dx.doi.org/10.32945/atr3612.2014.

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Jackfruit bronzing, an unreported disease affecting jackfruit is characterized by yellowish-orange to reddish discoloration of the affected pulps and rags of the fruit. The etiology of this disease, its isolation, pathogenicity, characterization and identification is the scope of this study. The pathogen was isolated from infected jackfruit, pathogenicity was conducted to detached and attached fruits. The pathogen was identified based on its cultural and morphological characteristics, staining reactions, physiological and biochemical characteristics, other plant inoculations and DNA analysis u

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19

Pérez-Rodríguez, Ileana, Jessica K. Choi, Karla Abuyen, et al. "Geothermobacter hydrogeniphilus sp. nov., a mesophilic, iron(III)-reducing bacterium from seafloor/subseafloor environments in the Pacific Ocean, and emended description of the genus Geothermobacter." International Journal of Systematic and Evolutionary Microbiology 71, no. 4 (2021). http://dx.doi.org/10.1099/ijsem.0.004739.

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A novel mesophilic, anaerobic, mixotrophic bacterium, with designated strains EPR-MT and HR-1, was isolated from a semi-extinct hydrothermal vent at the East Pacific Rise and from an Fe-mat at Lō'ihi Seamount, respectively. The cells were Gram-negative, pleomorphic rods of about 2.0 µm in length and 0.5 µm in width. Strain EPR-MT grew between 25 and 45 °C (optimum, 37.5–40 °C), 10 and 50 g l−1 NaCl (optimum, 15–20 g l−1) and pH 5.5 and 8.6 (optimum, pH 6.4). Strain HR-1 grew between 20 and 45 °C (optimum, 37.5–40 °C), 10 and 50 g l−1 NaCl (optimum, 15–25 g l−1) and pH 5.5 and 8.6 (optimum, pH

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20

Vasanthamohan, Lakshman, Nadine Kronfli, Chenchen Hou, Ally P. H. Prebtani, and Anjali Shroff. "Subacute Infective Endocarditis Secondary to Cardiobacterium hominis in a Patient with Mitral Valve Prolapse." Canadian Journal of General Internal Medicine 12, no. 3 (2017). http://dx.doi.org/10.22374/cjgim.v12i3.161.

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We present the case of a 42-year-old man with a history of mitral valve prolapse (MVP) presenting with subacute native valve endocarditis secondary to Cardiobacterium hominis infection. He presented with non-specific symptoms of generalized fatigue and malaise subsequent to a complication-free dental cleaning. He was treated initially with 4 weeks of ceftriaxone, but ultimately required mitral valve replacement due to severe valvular degeneration. This case provides a review of the pathophysiology and presentations of infective endocarditis (IE) secondary to HACEK organisms. We will review ris

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