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Zumbansen A, Kneifel H, Lazzouni L, Ophey A, Black SE, Chen JL, Edwards D, Funck T, Hartmann AE, Heiss WD, Hildesheim F, Lanthier S, Lespérance P, Mochizuki G, Paquette C, Rochon E, Rubi-Fessen I, Valles J, Wortman-Jutt S, Thiel A. Differential Effects of Speech and Language Therapy and rTMS in Chronic Versus Subacute Post-stroke Aphasia: Results of the NORTHSTAR-CA Trial. Neurorehabil Neural Repair 2022; 36:306-316. [PMID: 35337223 PMCID: PMC9003806 DOI: 10.1177/15459683211065448] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background & objective Contralesional 1-Hz repetitive transcranial magnetic stimulation (rTMS) over the right pars triangularis combined with speech-language therapy (SLT) has shown positive results on the recovery of naming in subacute (5–45 days) post-stroke aphasia. NORTHSTAR-CA is an extension of the previously reported NORTHSTAR trial to chronic aphasia (>6 months post-stroke) designed to compare the effectiveness of the same rTMS protocol in both phases. Methods Sixty-seven patients with left middle cerebral artery infarcts (28 chronic, 39 subacute) were recruited (01-2014 to 07-2019) and randomized to receive rTMS (N = 34) or sham stimulation (N = 33) with SLT for 10 days. Primary outcome variables were Z-score changes in naming, semantic fluency and comprehension tests and adverse event frequency. Intention-to-treat analyses tested between-group effects at days 1 and 30 post-treatment. Chronic and subacute results were compared. Results Adverse events were rare, mild, and did not differ between groups. Language outcomes improved significantly in all groups irrespective of treatment and recovery phase. At 30-day follow-up, there was a significant interaction of stimulation and recovery phase on naming recovery (P <.001). Naming recovery with rTMS was larger in subacute (Mdn = 1.91/IQR = .77) than chronic patients (Mdn = .15/IQR = 1.68/P = .015). There was no significant rTMS effect in the chronic aphasia group. Conclusions The addition of rTMS to SLT led to significant supplemental gains in naming recovery in the subacute phase only. While this needs confirmation in larger studies, our results clarify neuromodulatory vs training-induced effects and indicate a possible window of opportunity for contralesional inhibitory stimulation interventions in post-stroke aphasia. NORTHSTAR trial registration https://clinicaltrials.gov/ct2/show/NCT02020421.
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Affiliation(s)
- Anna Zumbansen
- Jewish General Hospital, 5620McGill University, Montreal, QC, Canada.,School of Rehabilitation Sciences, 6363University of Ottawa, Ottawa, ON, Canada
| | - Heike Kneifel
- Jewish General Hospital, 5620McGill University, Montreal, QC, Canada.,School of Rehabilitation Sciences, 6363University of Ottawa, Ottawa, ON, Canada
| | - Latifa Lazzouni
- Jewish General Hospital, 5620McGill University, Montreal, QC, Canada
| | - Anja Ophey
- Jewish General Hospital, 5620McGill University, Montreal, QC, Canada
| | - Sandra E Black
- Department of Medicine-Neurology and Heart and Stroke Foundation Canadian Partnership for Stroke Recovery, Sunnybrook Research Institute, 177420University of Toronto, Toronto, ON, Canada.,KITE Research Institute, Toronto Rehabilitation Institute, 177420University Health Network, University of Toronto, Toronto, ON, Canada
| | - Joyce L Chen
- Faculty of Kinesiology and Physical Education, and Rehabilitation Sciences Institute, 177420University of Toronto, Toronto, ON, Canada
| | - Dylan Edwards
- 10997Burke Neurological Institute, White Plains, NY, USA.,Moss Rehabilitation Research Institute, Elkins Park, PA, USA.,Edith Cowan University, Joondalup, WA, Australia
| | - Thomas Funck
- Jewish General Hospital, 5620McGill University, Montreal, QC, Canada
| | - Alexander Erich Hartmann
- Hospital of the City of Cologne and Department of Neurosurgery, 163483University of Witten-Herdecke, Germany
| | - Wolf-Dieter Heiss
- Max Planck Institute für Stoffwechsel Forschung - MPI for Metabolism Research, and 28302Universität zu Köln, Cologne, Germany
| | - Franziska Hildesheim
- Jewish General Hospital, 5620McGill University, Montreal, QC, Canada.,Canadian Platform for Trials in Non-invasive Brain Stimulation (CanSTIM), Montreal, QC, Canada
| | - Sylvain Lanthier
- Hôpital du Sacré-Cœur de Montreal, 12368Université de Montréal, Montreal, QC, Canada
| | | | - George Mochizuki
- School of Kinesiology and Health Science, 56014York University, Toronto, ON, Canada
| | - Caroline Paquette
- Jewish General Hospital, 5620McGill University, Montreal, QC, Canada
| | - Elizabet Rochon
- KITE Research Institute, Toronto Rehabilitation Institute, 177420University Health Network, University of Toronto, Toronto, ON, Canada
| | - Ilona Rubi-Fessen
- RehaNova, Neurological Rehabilitation Clinic, Cologne, Germany.,Department of Special Education and Rehabilitation, Faculty of Human Sciences, 14309University of Cologne, Cologne, Germany
| | - Jennie Valles
- 10997Burke Rehabilitation Hospital, White Plains, NY, USA
| | - Susan Wortman-Jutt
- 10997Burke Neurological Institute, White Plains, NY, USA.,10997Burke Rehabilitation Hospital, White Plains, NY, USA
| | - Alexander Thiel
- Jewish General Hospital, 5620McGill University, Montreal, QC, Canada.,Canadian Platform for Trials in Non-invasive Brain Stimulation (CanSTIM), Montreal, QC, Canada
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Zumbansen A, Black SE, Chen JL, J Edwards D, Hartmann A, Heiss WD, Lanthier S, Lesperance P, Mochizuki G, Paquette C, Rochon EA, Rubi-Fessen I, Valles J, Kneifel H, Wortman-Jutt S, Thiel A. Non-invasive brain stimulation as add-on therapy for subacute post-stroke aphasia: a randomized trial (NORTHSTAR). Eur Stroke J 2020; 5:402-413. [PMID: 33598559 DOI: 10.1177/2396987320934935] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 05/23/2020] [Indexed: 11/17/2022] Open
Abstract
Introduction Non-invasive brain stimulation (NIBS) with speech therapy might improve recovery from post-stroke aphasia. This three-armed sham-controlled blinded prospective proof-of-concept study tested 1 Hz subthreshold repetitive transcranial magnetic stimulation (rTMS) and 2-mA cathodal transcranial direct current stimulation (ctDCS) on the right pars triangularis in subacute post-stroke aphasia. Patients and methods Sixty-three patients with left middle cerebral artery infarcts were recruited in five hospitals (Canada/United States/Germany, 01-2014/03-2018) and randomized to receive rTMS (N = 20), ctDCS (N = 24) or sham stimulation (N = 19) with ST for 10 days. Primary outcome variables were Z-score changes in naming, semantic fluency and comprehension tests and adverse event frequency. Secondary outcome variable was the percent change in the Unified Aphasia Score. Intention-to-treat analyses tested between-group effects at days 1 and 30 post-treatment with a pre-planned subgroup analysis for lesion location (affecting Broca's area or not). Results Naming was significantly improved by rTMS (median = 1.91/interquartile range = 0.77/p = .01) at 30 days versus ctDCS (median = 1.11/interquartile range = 1.51) and sham stimulation (median = 1.02/interquartile range = 1.71). All other primary results were non-significant. The rTMS effect was driven by the patient subgroup with intact Broca's area where NIBS tended to improve UnAS (median = 33.2%/interquartile range = 46.7%/p = .062) versus sham stimulation (median = 12.5%/interquartile range = 7.9%) at day 30. Conversely, in patients with infarcted Broca's area, UnAS tended to improve more with sham stimulation (median = 75.0%/interquartile range = 86.9%/p = .053) versus NIBS (median = 12.7%/interquartile range = 31.7).Conclusion: We found a delayed positive effect of low-frequency rTMS targeting the right pars triangularis on the recovery of naming performance in subacute post-stroke aphasia. This intervention may be beneficial only in patients with morphologically intact Broca's area.
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Affiliation(s)
- Anna Zumbansen
- Jewish General Hospital, Lady Davis Institute for Medical Research, Department of Neurology & Neurosurgery, McGill University, Montreal, Quebec
| | - Sandra E Black
- Department of Medicine-Neurology and Heart and Stroke Foundation Canadian Partnership for Stroke Recovery, Sunnybrook Research Institute, University of Toronto, Toronto, Ontario
| | - Joyce L Chen
- Faculty of Kinesiology and Physical Education, and Rehabilitation Sciences Institute, University of Toronto, Toronto, Ontario
| | - Dylan J Edwards
- Burke Neurological Institute, White Plains, NY, USA.,Moss Rehabilitation Research Institute, Elkins Park, PA, USA.,School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia
| | - Alexander Hartmann
- Department of Neurosurgery, Hospital of the City of Cologne, University of Witten-Herdecke, Germany
| | - Wolf-Dieter Heiss
- Max Planck Institute für Stoffwechsel Forschung -- MPI for Metabolism Research, and Department of Neurology, Universität zu Köln, Cologne, Germany
| | - Sylvain Lanthier
- Hôpital du Sacré-Cœur de Montreal, and Department of medicine, Université de Montréal, Quebec
| | | | - George Mochizuki
- School of Kinesiology and Health Science, York University, Toronto, Ontario
| | - Caroline Paquette
- Department of Kinesiology and Physical Education, McGill University, Montreal, Quebec
| | - Elizabeth A Rochon
- Toronto Rehabilitation Institute, and Department of Speech-Language Pathology, University of Toronto, Toronto, Ontario
| | | | - Jennie Valles
- Burke Rehabilitation Hospital, White Plains, NY, USA
| | - Heike Kneifel
- RehaNova Neurologische Rehabilitationsklinik, Cologne, Germany
| | - Susan Wortman-Jutt
- Burke Neurological Institute, White Plains, NY, USA.,Burke Rehabilitation Hospital, White Plains, NY, USA
| | - Alexander Thiel
- Jewish General Hospital, Lady Davis Institute for Medical Research, Department of Neurology & Neurosurgery, McGill University, Montreal, Quebec
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Abstract
Reaction conditions for the synthesis of N-hydroxy-α, α′-iminodipropionic acid, the ligand of naturally occurring amavadin. and N-hydroxyiminodiacetic acid, the first member of this class of complexons, have been investigated.
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Affiliation(s)
- E. Koch
- Institut für Organische Chemie der Universität Tübingen. Auf der Morgenstclle 18. D-7400 Tübingen
| | - H. Kneifel
- Institut für Biotechnologie der Kernforschungsanlage Jülich. D-5170 Jülich
| | - E. Bayer
- Institut für Organische Chemie der Universität Tübingen. Auf der Morgenstclle 18. D-7400 Tübingen
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Janzik I, Preiskowski S, Kneifel H. Ozone has dramatic effects on the regulation of the prechorismate pathway in tobacco (Nicotiana tabacum L. cv. Bel W3). Planta 2005; 223:20-7. [PMID: 16078071 DOI: 10.1007/s00425-005-0060-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2005] [Accepted: 05/13/2005] [Indexed: 05/03/2023]
Abstract
The accumulation of aromatic secondary metabolites is a well-known element of the plant response to ozone. Most of these metabolites are synthesized via the three aromatic amino acids phenylalanine, tyrosine and tryptophan. Before branching, the biosynthetic pathway to the three amino acids shares seven enzymatic steps, called the prechorismate pathway, catalysed by 3-deoxy-D: -arabino-heptulosonate-7-phosphate (DAHP) synthase [EC 2.5.1.54], 3-dehydroquinate synthase [EC 4.2.3.4], 3-dehydroquinate dehydratase [EC 4.2.1.10]-shikimate 5-dehydrogenase [EC 1.1.1.25], shikimate kinase [EC 2.7.1.71], 5-enolpyruvylshikimate 3-phosphate synthase [EC 2.5.1.19] and chorismate synthase [EC 4.2.3.5]). We have studied the transcript level of these enzymes and the aromatic metabolite profile in the ozone sensitive tobacco cultivar BelW3 (Nicotiana tabacum L. cv Bel W3), when exposed to an acute ozone pulse (160 nl l(-1), 5 h). Specific cDNA-fragments of the corresponding six genes were isolated from tobacco Bel W3 and used as probes for determining the expression of the prechorismate pathway genes. The fully expanded leaves of ozone treated plants, which developed symptoms like necrotic leaf spots and accumulation of aromatic metabolites, showed a clear induction of the shikimate pathway genes; indicating, that this induction is linked to the development of the symptoms. Distinct kinetics and magnitudes were observed in tobacco leaves for the ozone dependent enhanced mRNA accumulation of the aforementioned genes in BelW3. The strongest and earliest induction due to ozone treatment could be observed for DAHP synthase. An isoform-specific analysis of the transcripts showed a strong induction on transcript level only for one of three isoforms, which was followed by the induction of the DAHP synthase also on protein level. The different induction kinetics of the prechorismate pathway genes indicate that their regulation in response to ozone might be regulated by different signals, for example, ethylene, reactive oxygen species or salicylic acid, which also occur with different kinetics and thus may play different roles in the plant response to ozone.
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Affiliation(s)
- I Janzik
- Research Centre Jülich GmbH, Institute Phytosphere (ICG III), 52425 Jülich, Germany.
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6
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Kneifel H, Bayer E. Stereochemistry and total synthesis of amavadin, the naturally occurring vanadium compound of Amanita muscaria. J Am Chem Soc 2002. [DOI: 10.1021/ja00271a043] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
When transport of polyamines in Escherichia coli was examined, putrescine excretion was observed under two different physiological conditions: (i) strictly correlated to growth and (ii) following a hyperosmotic shock. Spermidine was not excreted. Characterization of a deletion mutant showed that PotE is not involved in these transport processes.
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Affiliation(s)
- D Schiller
- Institut für Biochemie, Universität Köln, D-50674 Cologne, Germany
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Bock M, Kneifel H, Schoberth SM, Sahm H. Reduction of halogenated derivatives of benzoic acid to the corresponding alcohols byDesulfovibrio vulgaris PY1. ACTA ACUST UNITED AC 2000. [DOI: 10.1002/abio.370200303] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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9
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Ressler BP, Kneifel H, Winter J. Bioavailability of polycyclic aromatic hydrocarbons and formation of humic acid-like residues during bacterial PAH degradation. Appl Microbiol Biotechnol 1999. [DOI: 10.1007/s002530051619] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Abstract
Under sulfate limitation, axenic batch cultures of the green alga Scenedesmus obliquus metabolized 1-naphthalenesulfonic acid and partially used the sulfonate as a source of sulfur. The main metabolite, 1-hydroxy-2-naphthalenesulfonic acid, which was not metabolized further in the algal culture, was formed by hydroxylation of the substrate in position 1 and by migration of the sulfonic acid group to position 2 of the naphthalene ring (NIH shift). A smaller amount of 1-naphthalenesulfonic acid was desulfonated. The resulting 1-naphthol was mostly transformed into 1-naphthyl beta-d-glucopyranoside.
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Affiliation(s)
- H Kneifel
- Institut für Chemie und Dynamik der Geosphäre 6, Forschungszentrum Jülich, D-52425 Jülich, Germany
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Hammer E, Kneifel H, Hofmann K, Schauer F. Enhanced excretion of intermediates of aromatic amino acid catabolism during chlorophenol degradation due to nutrient limitation in the yeast Candida maltosa. J Basic Microbiol 1996; 36:239-43. [PMID: 8765083 DOI: 10.1002/jobm.3620360406] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Incubation of phenol-induced cells of the yeast Candida maltosa SBUG 700 with mono- and dichlorophenols resulted in the formation of metabolites of the substrates and of further metabolites not related to the degradation pathway of the substrates. These additional compounds, identified as 4-hydroxyphenylacetic acid (4-HPA), phenylacetic acid (PA), indolylacetic acid (IA) and indolylethanol (i.e.) by means of HPLC and GC/MS, were not excreted in incubation experiments with glucose. The excretion of these metabolites of aromatic amino acid metabolism is not caused by toxic effects of the phenol derivatives, but seems to be a result of carbon and nitrogen starvation of yeast cells.
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Affiliation(s)
- E Hammer
- Institut für Mikrobiologie, Ernst-Moritz-Arndt-Universität Greifswald, Germany.
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12
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Soeder CJ, Papaderos A, Kleespies M, Kneifel H, Haegel FH, Webb L. Influence of phytogenic surfactants (quillaya saponin and soya lecithin) on bio-elimination of phenanthrene and fluoranthene by three bacteria. Appl Microbiol Biotechnol 1996; 44:654-9. [PMID: 8703434 DOI: 10.1007/bf00172499] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The influence of two phytogenic surfactants on the elimination of polycyclic aromatic hydrocarbons (PAH) was studied in shaken-batch cultures of three soil bacteria under axenic conditions. At sufficiently high concentrations, quillaya saponin and soybean lecithin solubilized phenanthrene or fluoranthene efficiently. However, complete solubilization of the PAH by lecithin only doubled the maximal rate of elimination of the two PAH compounds by Pseudomonas 0259, strain MKm (Rhizomonas ?) and Mycobacterium EMI 2. By contrast, quillaya saponin did not improve PAH bioavailability, and in strain MKm it caused significant growth lags above 2.5 g/l. Simultaneously with the elimination of the PAH the bacteria utilized the surfactants as substrates for growth. Intermediate formation of PAH metabolites was noted. The results suggest that some phytogenic surfactants might improve PAH bioavailability in rhizospheres.
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Polnisch E, Kneifel H, Franzke H, Hofmann KH. Degradation and dehalogenation of monochlorophenols by the phenol-assimilating yeast Candida maltosa. Biodegradation 1992; 2:193-9. [PMID: 1368963 DOI: 10.1007/bf00124493] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The phenol-assimilating yeast Candida maltosa is able to degrade monochlorophenols but cannot grow on these substrates. 3- and 4-chlorophenol were broken down very rapidly by phenol-grown cells under the formation of 4-chlorocatechol, 5-chloropyrogallol and 4-carboxymethylenebut-2-en-4-olide with concomitant release of chloride. 2-Chlorophenol was partially converted into cis,cis-2-chloromuconic acid via 3-chlorocatechol which was also obtained from 3-chlorophenol in low amounts. No further metabolites containing chloride were found. The dehalogenation step in the chlorophenol degradation is the cycloisomerization of the cis,cis-chloromuconic acid to 4-carboxymethylenebut-2-en-4-olide in the ortho fission pathway.
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Affiliation(s)
- E Polnisch
- Institut für Angewandte und Technische Mikrobiologie, Ernst-Moritz-Arndt-Universität Greifswald, Germany
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14
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Abstract
Desulfovibrio vulgaris Marburg, "Desulfovibrio simplex" XVI, and Desulfovibrio sp. strain MP47 used benzaldehydes such as vanillin, 3,4,5-trimethoxybenzaldehyde, protocatechualdehyde, syringaldehyde, p-anisaldehyde, p-hydroxybenzaldehyde, and 2-methoxybenzaldehyde as electron donors for sulfate reduction and carbon dioxide and/or components of yeast extract as carbon sources for cell synthesis. The aldehydes were oxidized to their corresponding benzoic acids. The three sulfate reducers oxidized up to 7 mM vanillin and up to 4 mM p-anisaldehyde. Higher concentrations of vanillin or p-anisaldehyde were toxic. In addition, pyridoxal hydrochloride and o-vanillin served as electron donors for sulfate reduction. Salicylaldehyde, pyridine-2-aldehyde, pyridine-4-aldehyde, and 4-hydroxy-3-methoxybenzylalcohol were not oxidized. No molecular hydrogen was detected in the gas phase. The oxidized aldehydes were not further degraded.
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Affiliation(s)
- G Zellner
- Department of Microbiology, University of Regensburg, Federal Republic of Germany
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Zellner G, Messner P, Kneifel H, Winter J. Desulfovibrio simplex spec. nov., a new sulfate-reducing bacterium from a sour whey digester. Arch Microbiol 1989. [DOI: 10.1007/bf00425169] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Zellner G, Stackebrandt E, Messner P, Tindall BJ, Conway de Macario E, Kneifel H, Sleytr UB, Winter J. Methanocorpusculaceae fam. nov., represented by Methanocorpusculum parvum, Methanocorpusculum sinense spec. nov. and Methanocorpusculum bavaricum spec. nov. Arch Microbiol 1989; 151:381-90. [PMID: 2742452 DOI: 10.1007/bf00416595] [Citation(s) in RCA: 78] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Two new methanogenic bacteria, Methanocorpusculum sinense spec. nov. strain DSM 4274 from a pilot plant for treatment of distillery wastewater in Chengdu (Province Sichuan, China), and Methanocorpusculum bavaricum spec. nov. strain DSM 4179, from a wastewater pond of the sugar factory in Regensburg (Bavaria, FRG) are described. Methanocorpusculum strains are weakly motile and form irregularly coccoid cells, about 1 micron in diameter. The cell envelope consists of a cytoplasmic membrane and a S-layer, composed of hexagonally arranged glycoprotein subunits with molecular weights of 90,000 (Methanocorpusculum parvum), 92,000 (M. sinense), and 94,000 (M. bavaricum). The center-to-center spacings are 14.3 nm, 15.8 nm and 16.0 nm, respectively. Optimal growth of strains is obtained in the mesophilic temperature range and at a pH around 7. Methane is produced from H2/CO2, formate, 2-propanol/CO2 and 2-butanol/CO2 by M. parvum and M. bavaricum, whereas M. sinense can only utilize H2/CO2 and formate. Growth of M. sinense and M. bavaricum is dependent on the presence of clarified rumen fluid. The G + C content of the DNA of the three strains is ranging from 47.7-53.6 mol% as determined by different methods. A similar, but distinct polar lipid pattern indicates a close relationship between the three Methanocorpusculum species. The polyamine patterns of M. parvum, M. sinense and M. bavaricum are similar, but distinct from those of other methanogens and are characterized by a high concentration of the otherwise rare 1,3-diaminopropane. Quantitative comparison of the antigenic fingerprint of members of Methanocorpusculum revealed no antigenic relationship with any one of the reference methanogens tested. On the basis of the distant phylogenetic position of M. parvum and the data presented in this paper a new family, the Methanocorpusculaceae fam. nov., is defined.
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Affiliation(s)
- G Zellner
- Institut für Mikrobiologie, Universität Regensburg, Federal Republic of Germany
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Kneifel H, Hödl S, Lammer J, Kresbach H. [Acroangiodermatitis (pseudo-Kaposi disease)]. Z Hautkr 1987; 62:1272-9. [PMID: 3687156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
We present clinical, angiological, and histopathological findings concerning different kinds of so-called "kaposiform" acroangiodermatitis. In particular, we refer to the etiopathogenesis, prognosis, differential diagnosis, and therapy of each entity. The similarities between the so-called "kaposiform" acroangiodermatitis and Kaposi's sarcoma are primarily derived from clinical criteria. In contrast to Kaposi's sarcoma, the histopathological picture of acroangiodermatitis usually shows stasis dermatitis.
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Affiliation(s)
- H Kneifel
- Universitätsklinik für Dermatologie und Venerologie in Graz
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Abstract
We investigated the distribution of S-100-protein-positive dendritic cells in 20 cases of nodular vasculitis (erythema induratum Bazin). The cells were identified by immunohistochemical demonstration in paraffin sections. S-100-protein-positive dendritic cells were present in all cases and comprised up to 11% of the infiltrating cells in lymphohistiocytic areas (mean 3.7%). Because of the dendritic shape and the association with lymphocytes the cells are considered to represent T-zone histiocytes. Our findings suggest a possible role of delayed-type hypersensitivity in nodular vasculitis.
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Kneifel H, Schoberth SM. Formation of pyrrolidine by anaerobic polyamine degradation. Biochem Biophys Res Commun 1984; 119:556-60. [PMID: 6712643 DOI: 10.1016/s0006-291x(84)80284-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
High-resolution mass spectrometry was used to identify pyrrolidine as a product of anaerobic polyamine degradation. Due to the widespread occurrence of polyamines in the living world this process could contribute considerably to the presence of pyrrolidine in the environment.
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Abstract
Members of all four families of methanogenic bacteria were analyzed for polyamine concentrations. High-performance liquid chromatography analysis of dansylated cell extracts revealed typical polyamine patterns for each family. Members of Methanobacteriaceae (family I) were characterized by very low polyamine concentrations; members of Methanococcaceae (family II) were characterized by putrescine and high spermidine concentrations; members of Methanomicrobiaceae (family III) were characterized by the presence of putrescine, spermidine, and sym-homospermidine; and members of Methanosarcinaceae (family IV) contained only high concentrations of sym-homospermidine in addition to putrescine. The highest polyamine concentration was found in Methanosarcina barkeri Jülich, with 0.35% putrescine in the dry cell material. The polyamine distribution found coincides with the dendrogram based on comparative cataloguing of 16S rRNA and offers a new, rapid chemotaxonomic method for characterizing methanogenic bacteria. Variation of the growth substrates (H2-CO2, methanol, acetate, and trimethylamine) for M. barkeri resulted in quantitative but not qualitative differences in polyamine composition.
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Abstract
An unknown antibiotic, ophiocordin, C21H22N2O8, MW: 430, was isolated from submerged cultures of Cordyceps ophioglossoides, strain TU 276, grown in a glycerol soybean meal medium at 27 degrees C. The antibiotic was extracted from acidified culture fluids with n-butanol and purified by subsequent column chromatography on DEAE-Sephadex and cellulose. Studies including nuclear magnetic resonance and mass spectrometry resulted in proposals of partial structures of the molecule. Inhibition by ophiocordin could be demonstrated for a small number of fungi belonging to different taxonomic groups. Bacteria were not inhibited. The antifungal effect was antagonized by ammonia and nitrate ions and by certain amino acids.
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25
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Kneifel H, König WA, Wolf G, Zähner H. Metabolic products of microorganisms 123. Thraustomycin, a new antifungal nucleoside antibiotic from Streptomyces exfoliatus. J Antibiot (Tokyo) 1974; 27:20-30. [PMID: 4843048 DOI: 10.7164/antibiotics.27.20] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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26
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Hasenböhler A, Kneifel H, König WA, Zähner H, Zeiler HJ. [Metabolic products of microorganisms. 134. Stenothricin, a new inhibitor of the bacterial cell wall synthesis (author's transl)]. Arch Microbiol 1974; 99:307-21. [PMID: 4215397 DOI: 10.1007/bf00696245] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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27
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Fischer B, Keller-Schierlein W, Kneifel H, König WA, Loeffler W, Müller A, Muntwyler R, Zähner H. [Metabolic products of microorganisms. 118. Delta-N-hydroxy-L-arginine, an amino acid antagonist from Nannizzia gypsea]. Arch Mikrobiol 1973; 91:203-20. [PMID: 4775031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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28
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Fischer B, Keller-Schierlein W, Kneifel H, König WA, Loeffler W, Müller A, Muntwyler R, Zähner H. [Metabolic products of microorganisms. 118. Delta-N-hydroxy-L-arginine, an amino acid antagonist from Nannizzia gypsea]. Arch Mikrobiol 1973; 91:203-20. [PMID: 4732223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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29
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König WA, Kneifel H, Bayer E, Müller G, Zähner H. Metabolic products of microorganisms 116, o-(L-norvalyl-5)-isourea, a new arginine antagonist. J Antibiot (Tokyo) 1973; 26:44-50. [PMID: 4781279 DOI: 10.7164/antibiotics.26.44] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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30
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Fischer B, Keller-Schierlein W, Kneifel H, K�nig WA, Loeffler W, M�ller A, Muntwyler R, Z�hner H. Stoffwechselprodukte von Mikroorganismen. Arch Microbiol 1973. [DOI: 10.1007/bf00408908] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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