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in situ assessment of porphyrin photosensitizers in propionibacterium acnes.porphyrins are known to be efficient photosensitizer molecules and the combined action of light and porphyrins in propionibacterium acnes have a lethal action on the cells. identification and quantification of in situ porphyrins in p. acnes have been done using an integrating sphere connected to an ordinary absorption spectrophotometer, and the amounts of porphyrins in the cells were quantified by measuring scattering free absorption spectra of the cell suspensions. the concentration of porphyri ...200415018060
enhancement of trehalose production in dairy propionibacteria through manipulation of environmental conditions.we have shown that the ability to produce trehalose is widespread within the genus propionibacterium. eighteen strains isolated from dairy sources were screened for trehalose synthesis; the effect of environmental conditions on trehalose production was evaluated in propionibacterium freudenreichii ssp. shermanii nizo b365, a strain that accumulated high amounts of this disaccharide. lactose was the best carbohydrate source for trehalose production, whereas lactate, the substrate that led to the ...200414996463
evaluation of a new generation of plastic culture bottles with an automated microbial detection system for nine common contaminating organisms found in plt components.a microbial detection system (bact/alert 3d, biomérieux [formerly organon teknika]) has previously been validated with a variety of bacterial contaminants in plts. the recovery of nine organisms seeded into plts with new plastic culture bottles was studied in comparison to the current glass bottles. the use of plastic instead of glass would be expected to reduce the risk of injury.200414996192
the use of a bacteria detection system to evaluate bacterial contamination in plt concentrates.random-donor plts (rdps) are functional at 7 days. nevertheless, since the mid-1980s, concern for bacterial contamination has caused the storage period to be reduced to 5 days. the ability of a bacteria detection system (bds, pall) to determine bacterial contamination and permit extension of the plt shelf life to 7 days was assessed.200414996189
expression and crystallization of several forms of the propionibacterium shermanii transcarboxylase 5s subunit.the dimeric outer 5s subunit of transcarboxylase has been expressed in three different forms and crystallized: native 5s, 5s-his(6) and selenomethione-5s-his(6). all the crystals have an orthorhombic space group, but while native 5s forms primitive orthorhombic crystals, 5s-his(6) crystals are either c-centered or primitive and semet-5s-his(6) crystals are c-centered. crystallization of native 5s requires the addition of lithium sulfate, whereas this salt prevented crystallization of 5s-his(6). ...200414993680
in vitro assessment of the upper gastrointestinal tolerance of potential probiotic dairy propionibacteria.this study aimed to assess the transit tolerance of potential probiotic dairy propionibacteria strains in human upper gastrointestinal tract in vitro, and to evaluate the effect of food addition on viability of these strains in simulated ph 2.0 gastric juices. the transit tolerance of 13 dairy propionibacteria strains was determined at 37 degrees c by exposing washed cell suspensions to simulated gastric juices at ph values at 2.0, 3.0, and 4.0, and simulated small intestinal juices (ph 8.0) wit ...200414984773
[treating acne: avoid the development of antibiotic resistance by applying topical and combined therapy]. 200314974325
pleurodesis for malignant pleural effusions.approximately half of all patients with metastatic cancer develop a malignant pleural effusion which is likely to lead to a significant reduction in quality of life secondary to symptoms such as dyspnoea and cough. the aim of pleurodesis in these patients is to prevent re-accumulation of the effusion and thereby of symptoms, and avoid the need for repeated hospitalization for thoracocentesis. numerous clinical studies have been performed to try to determine the optimal pleurodesis strategy, and ...200414973997
propionibacterium acnes and the pathogenesis of progressive macular hypomelanosis.background: progressive macular hypomelanosis is a common hypopigmentation mainly on the central parts of the trunk, predominantly in young adults, especially women. it is often mistaken for pityriasis versicolor and pityriasis alba. it occurs in all races and has been described in many parts of the world. we discovered follicular red fluorescence restricted to lesional skin. we suspected a relation with a porphyrin-producing bacteria residing in sebum of the pilosebaceous duct, and we therefore ...200414967796
interconversion of propionate and succinate by propionibacterium pentosaceum. 195114917651
resolution of persistent periapical infection by endodontic surgery.aim: to examine the surfaces of a root tip removed during surgical endodontic treatment for the presence of microorganisms. summary: the present clinical case illustrates an endodontic retreatment of a maxillary premolar tooth with a fistula and periapical reaction. the case was under treatment for 1 year, during which an intracanal medicament was replaced several times. as the lesion did not decrease and exudate was persistent through the fistula and root canal, root end resection with root end ...200414870760
the mechanism of propionic acid formation by propionibacteria. 195114832422
utilization of coenzyme a by propionibacterium freudenreichii. 195014824067
augmentation of tumoricidal activity of human monocytes and macrophages by lymphokines.monocytes were separated from peripheral blood mononuclear cells of normal human donors by adherence on plastic conditioned by cell lines (microexudate-coated plastic) and harvested by exposure to ethylene diamine tetra-acetic acid. cytolytic activity was tested by incubating effector cells for 48 h with the murine sv40-transformed tu5 kidney line or the human lung cancer-derived calu line prelabelled with tritiated thymidine. lymphokine-containing supernatants were obtained from in vitroculture ...198014768696
cutting edge: dendritic cells copulsed with microbial and helminth antigens undergo modified maturation, segregate the antigens to distinct intracellular compartments, and concurrently induce microbe-specific th1 and helminth-specific th2 responses.to examine the ability of dendritic cells (dc) to discriminate between helminth and microbial ag and induce appropriately polarized th responses, mouse dc were copulsed with the helminth ag, schistosome egg ag (sea), along with the bacterium proprionebacterium acnes, pa, and transferred into wild-type mice. strikingly, sea/pa-copulsed dc induced concurrent pa-specific th1 (but not th2) responses and sea-specific th2 (but not th1) responses. although dc exposed to both ag undergo many of the matu ...200414764665
relationship between periodontal pocket sulfide levels and subgingival species.many species implicated in the pathogenesis of periodontal disease produce volatile sulfur compounds (vsc). this investigation examined the relationship between levels of sulfide and subgingival bacterial species in the same periodontal pockets.200314761124
mobilization of dendritic cell precursors into the circulation by administration of mip-1alpha in mice.dendritic cells (dcs) play a central role in immune responses and may be useful adjuvants for tumor vaccine therapy. we previously reported that f4/80(-)b220(-)cd11c(+) dc precursors expressing the cc chemokine receptors ccr1 and ccr5 are mobilized rapidly into the circulation in mice injected with propionibacterium acnes and are recruited into inflammatory tissue by macrophage inflammatory protein 1alpha (mip-1alpha), which binds to ccr1 and ccr5. here we investigate the mechanisms of dc precur ...200414759987
[submaxillary adenopathy due to propionibacterium propionicum: atypical presentation]. 200414756998
mass spectrometry proteomic analysis of stress adaptation reveals both common and distinct response pathways in propionibacterium freudenreichii.microorganisms used in food technology and probiotics are exposed to technological and digestive stresses, respectively. traditionally used as swiss-type cheese starters, propionibacteria also constitute promising human probiotics. stress tolerance and cross-protection in propionibacterium freudenreichii were thus examined after exposure to heat, acid, or bile salts stresses. adapted cells demonstrated acquired homologous tolerance. cross-protection between bile salts and heat adaptation was dem ...200414730419
propionibacterium propionicus infection in chronic granulomatous disease. 200414727225
studies on the cytotoxic effects of propionibacterium acnes strains isolated from cornea.eukaryotic tissue culture appears to be a suitable model for measuring the bacterial cytotoxic effect. propionibacterium acnes strains were isolated from corneal tissue removed by keratoplastic surgery from patients with corneal dystrophy or bullous keratopathy. the cytotoxic effect of the filtrates of 10 p. acnes strains were studied by means of measuring the decrease of the mitochondrial dehydrogenase activities of viable epithelial (hela) and fibroblastic (bhk-21) cell cultures. a time and co ...200414726235
role of core biopsy in diagnosing infection before revision hip arthroplasty.a prerevision core biopsy from a failed hip joint was performed in 41 hips (38 patients) with a high index of suspicion for sepsis to determine its efficacy in diagnosing sepsis. seven hips were known septic failures, and core biopsy was undertaken to confirm resolution of sepsis. forty hips were revised, whereas 1 hip had excision of heterotopic bone. cultures and permanent histologic sections were obtained during subsequent surgeries, and findings were compared with the results of core biopsy. ...200414716655
polymerase chain reaction-based analysis of microorganisms associated with failed endodontic treatment.in this study, we aimed to investigate the occurrence of several microbial species in cases of failed endodontic therapy by means of the polymerase chain reaction (pcr). study design root canal samples were taken from 22 root-filled teeth with persistent periradicular lesions selected for re-treatment. dna was extracted from the samples and analyzed for the presence of 19 microbial taxa by using the polymerase chain reaction.200414716262
propionibacterium acnes-reactive t helper-1 cells in the skin of patients with acne vulgaris. 200314708633
comparison of chloroxylenol 0.5% plus salicylic acid 2% cream and benzoyl peroxide 5% gel in the treatment of acne vulgaris: a randomized double-blind study.a 12-week double-blind randomized study was performed to compare benzoyl peroxide 5% (bp) gel and chloroxylenol 0.5% plus salicylic acid 2% (pcmx + sa) cream (nisal cream) for efficacy and adverse reactions. thirty-seven volunteers participated in the study, 19 in the bp group and 18 in the pcmx + sa group. the patients applied the medication twice daily to the entire face. clinical evaluation and lesion counts were obtained at 0, 3, 6, 9 and 12 weeks. at week 12 both groups showed a marked impr ...200314708455
endophthalmitis isolates and antibiotic sensitivities: a 6-year review of culture-proven cases.to investigate the spectrum of organisms causing culture-proven endophthalmitis and their sensitivities to commonly used antimicrobial agents.200414700642
multiple bacteria in aortic aneurysms.the purpose of the present study was to reexamine the possibility that bacteria, particularly anaerobes, are present in aortic aneurysms.200314681645
subantimicrobial dose doxycycline for acne and rosacea.acne vulgaris and rosacea present therapeutic challenges due to their chronicity, potential for disfigurement, and psychosocial impact. although pathophysiologically distinct, both conditions have major inflammatory components. consequently, topical and systemic antimicrobial agents are routinely prescribed for extended periods. emergence of resistant strains of propionibacterium acnes, adverse events, and compliance issues associated with chronic systemic tetracycline use have led to new treatm ...200314673277
assessment of etiologic agents in acne pathogenesis.acne is a chronic inflammatory disease of the pilosebaceous units. traditional etiologic factors include increased sebum production, ductal hyperkeratosis, abnormality of the microbial flora within the pilosebaceous unit, and mediators of inflammation. recent developments do not refute these familial elements, but rather refine particular aspects. interleukin-1a influences hypercornification of the infundibulum as well as the inflammatory response by inducing the production of vascular endotheli ...200314673275
is androgenetic alopecia a photoaggravated dermatosis?progressive thinning of the scalp hair in androgenetic alopecia (aga) results in a gradual decline in natural protection of the scalp from ultraviolet radiation (uvr). a number of pathologic conditions of the scalp are evidently related to uvr, particularly photosensitive diseases and disorders of the chronically photodamaged bald scalp. the most important chronic effects of uvr are photocarcinogenesis and solar elastosis. besides these, erosive pustular dermatosis and 'red scalp' are distinct d ...200314657623
is antibiotic resistance in cutaneous propionibacteria clinically relevant? : implications of resistance for acne patients and prescribers.it is well recognized that some patients with acne do not respond adequately to antibiotic therapy. it is important to distinguish antibiotic recalcitrant acne which we would suggest represents acne that shows a diminished response to treatment irrespective of the cause as opposed to 'antibiotic-resistant acne' which is acne that is less responsive to treatment as a direct consequence of skin colonization with resistant propionibacteria. here we show that antibiotic-resistant acne is not just a ...200314640775
effects of opc-6535 on lipopolysaccharide-induced acute liver injury in the rat: involvement of superoxide and tumor necrosis factor-alpha from hepatic macrophages.the objective of this study was to investigate the effects of opc-6535 on propionibacterium acnes-primed and lipopolysaccharide-induced liver injury in the rat.200314639361
microbiology's principle of biofilms as a major factor in the pathogenesis of acne vulgaris.propionibacterium acnes reside within the pilosebaceous unit in a biofilm. as such, they live in a community of bacteria that encase themselves within an extracellular polysaccharide lining, which the organisms secrete after adherence to the surface. this gylcocalyx polymer acts as a protective exoskeleton and serves as a physical barrier, limiting effective antimicrobial concentrations within the biofilm microenvironment. the gylcocalyx polymer secreted by p. acnes as a biofilm may explain the ...200314636182
diversity of l-leucine catabolism in various microorganisms involved in dairy fermentations, and identification of the rate-controlling step in the formation of the potent flavour component 3-methylbutanal.various microorganisms, belonging to the genera lactococcus, lactobacillus, streptococcus, leuconostoc, bifidobacterium, propionibacterium, brevibacterium, corynebacterium and arthrobacter, used in dairy fermentations such as cheese making, were analysed for their potential to convert leucine into flavour components, most notably 3-methylbutanal. a large variation between and within species was observed for various enzyme activities involved in the conversion pathway, e.g. transaminases, alpha-h ...200414624315
propionibacterium acnes dna detected in bronchoalveolar lavage cells from patients with sarcoidosis.the causes of sarcoidosis are unknown. propionibacterium acnes is so far the only bacterium to be found in sarcoid lymph nodes. we attempted to detect p. acnes dna in cells recovered by bronchoalveolar lavage (bal) from patients with sarcoidosis.200314620162
[the influence of a new surface treatment of silicone intracoular lenses with fluoralkylsitan on the adherence of endophthalmitic bacteria in vitro]].dynasilan is a fluoroalkylsilan which is able to bind to surface active molecules of intraocular lenses (iols), thereby offering a new option for surface modification of silicone lenses. the purpose of this in vitro study was to investigate the influence of this new surface treatment on the adherence of two typical endophthalmitis-inducing bacteria ( staphylococcus epidermidis, propionibacterium acnes).200314618356
molecular diagnosis of a vascular prosthesis infection, due to propionibacterium acnes, by amplification and sequencing of 16s rdna.we describe a case of indolent vascular prosthesis infection due to propionibacterium acnes. the microorganism was identified only by amplification and sequencing of 16s rdna, while standard cultures remained negative. this observation underscores the usefulness of molecular techniques for the diagnosis of infection caused by fastidious microorganisms.200314616731
analysis of clinical isolates of propionibacterium acnes by optimised rapd.random amplification of polymorphic dna (rapd) was evaluated as a genotypic method for typing clinical strains of propionibacterium acnes. rapd can suffer from problems of reproducibility if parameters are not standardised. in this study the reaction conditions were optimised by adjusting template dna concentration and buffer constituents. all isolates were typeable using the optimised rapd protocol which was found to be highly discriminatory (simpson's diversity index, 0.98) and reproducible. t ...200314612236
bacteriologic findings in patients with chronic sinusitis.we studied the bacteriology of maxillary sinus aspirates obtained from patients diagnosed with chronic sinusitis. we recovered 659 strains from 510 aspirates; of these, 572 (86.8%) were aerobes and 87 (13.2%) were anaerobes. aerobes only were recovered from 310 of the 510 specimens (60.8%) and anaerobes only from 31 (6.1%). among the 572 aerobic bacteria, the most prevalent organisms were streptococcus viridans (158 strains [27.6%]), streptococcus pneumoniae (67 [11.7%]), corynebacterium species ...200314606178
hydrogel patches containing triclosan for acne treatment.adhesive hydrogel patches containing triclosan (ts) were prepared as an anti-acne dosage form. sodium polyacrylate and carboxymethylcellulose (sodium salt) were used as matrix polymers, and al(3+), produced by the reaction of dihydroxy aluminum aminoacetate and l(+)-tartaric acid, was employed as a crosslinking agent for the negatively charged polymers. the crosslinking reactions were done at 25, 40 and 50 degrees c for predetermined time intervals. the semi-solid gels were obtained only when th ...200314602184
effects of live cultures of lactobacillus acidophilus (strains np45 and np51) and propionibacterium freudenreichii on performance, carcass, and intestinal characteristics, and escherichia coli strain o157 shedding of finishing beef steers.in exp. 1, 240 beef steers (initial bw = 332.8 kg) were used to determine the effects of lactobacillus acidophilus (la) plus propionibacterium freudenreichii (pf) on performance, carcass, and intestinal characteristics; serum iga concentrations; and the prevalence of escherichia coli o157 (ec). cattle were fed a steam-flaked corn-based, 92% concentrate diet, and the four direct-fed microbial (dfm) treatments (12 pens/treatment) included in a randomized complete block design were as follows: 1) c ...200314601871
delayed postoperative intracerebral abscess caused by proprionibacterium acnes: case report and review of the literature.a case of delayed intracerebral abscess due to proprionibacterium acnes (p. acnes), 18 months after an uneventful excision of a parasagittal haemangiopericytoma in a 61-year-old female is reported. this is highly unusual as cerebral abscess by p. acnes is rare and it occurred so late postoperatively in the absence of known risk factors. we propose the inclusion of cerebral abscess by p. acnes in the differential diagnosis of lesions that mimic tumour recurrences, after clean craniotomies.200314579899
in vitro activities of a new des-fluoro(6) quinolone, garenoxacin, against clinical anaerobic bacteria.the antimicrobial activities of garenoxacin and eight other antibiotics against 641 anaerobic isolates were evaluated with the nccls agar dilution method. overall, the mics of garenoxacin for 50 and 90% of the strains tested (in micrograms per milliliter) were as follows: bacteroides fragilis group, 0.5 and 2; prevotella spp., 0.25 and 2; fusobacterium spp., 0.25 and 0.5; porphyromonas spp., 0.125 and 0.25; bilophila wadsworthia, 0.5 and 1; veillonella spp., 0.25 and 0.5; clostridium spp., 0.25 ...200314576144
tylosin resistance in arcanobacterium pyogenes is encoded by an erm x determinant.arcanobacterium pyogenes, a commensal on the mucous membranes of many economically important animal species, is also a pathogen, causing abscesses of the skin, joints, and visceral organs as well as mastitis and abortion. in food animals, a. pyogenes is exposed to antimicrobial agents used for growth promotion, prophylaxis, and therapy, notably tylosin, a macrolide antibiotic used extensively for the prevention of liver abscessation in feedlot cattle in the united states. of 48 a. pyogenes isola ...200314576111
fermentation of five sucrose isomers by human dental plaque bacteria.sucrose has five structural isomers: palatinose, trehalulose, turanose, maltulose and leucrose. although these isomers have been reported to be noncariogenic disaccharides, which cannot be utilized by mutans streptococci, there is no information about their fermentability by other bacteria in dental plaque. the purpose of the present study was to examine whether these isomers were fermented by predominant bacteria in human dental plaque. clinical bacterial isolates obtained from dental plaque fr ...200314571118
the in vivo assessment of safety and gastrointestinal survival of an orally administered novel probiotic, propionibacterium jensenii 702, in a male wistar rat model.this study aimed to evaluate in vivo gastrointestinal survival and safety of orally administered probiotic bacterium, propionibacterium jensenii 702, using a male wistar rat model. a high dose of 10(10) cfu/rat/day of p. jensenii 702 was fed to each rat for 81 days. the repeated dose toxicity and translocation of p. jensenii 702 into rat tissues were evaluated, along with the rat faecal beta-glucuronidase activities and dairy propionibacteria counts. results showed that p. jensenii 702 had no ad ...200314563403
first cases of animal diseases published since 2000. 3. cattle.in this third article of a series of papers listing first case reports of animal diseases published since 2000, the following seven cases of cattle diseases are discussed: al amyloidosis. canola oil intoxication. disseminated intracytoplasmic neuronal vacuolation. encephalomyelitis associated with akabane virus infection in adult cows. lower limb deformity: "mirror image duplication of the plantar/palmar half of the distal portion of the digit". lupinus argenteus intoxication. novel propionibact ...200314535583
diagnostic management of patients with sapho syndrome: use of mr imaging to guide bone biopsy at ct for microbiological and histological work-up.propionibacterium acnes (p. acnes) is suspected to be involved in the pathophysiology of sapho syndrome, since it has been isolated repeatedly through open surgical bone biopsy. this study demonstrates the role of mri in identifying inflamed bone areas in patients with sapho syndrome and the role of ct-guided bone biopsies in obtaining samples from these areas for microbiological and histopathological investigations, thus obviating open surgery. fourteen consecutive patients with sapho syndrome ...200314534805
ocular infections due to anaerobic bacteria.the increased recovery of anaerobic bacteria in clinical infection has led to greater appreciation of these organisms in ocular infections. in studies that employed adequate method for recovery of anaerobes they were isolated from about a third of patients with conjunctivitis, half of the time in pure culture. the predominant recovered anaerobes were clostridium spp., gram-negative anaerobic bacilli, and peptostreptococcus spp. anaerobic bacteria were also recovered from patients who wore contac ...200114531629
influence of histamine in a liver injury model induced by propionibacterium acnes and lipopolysaccharide.in normal mice, plasma histamine levels were 29.4+/-10.1 pmol/ml. when 0.1 microg of lipopolysaccharide (lps) was intravenously injected into propionibacterium acnes (p. acnes)-primed icr mice, histamine levels increased remarkably to 61.2+/-15.9 pmol/ml (p<0.001). an increase was also observed in liver tissues. oral administration of histidine at 200 mg/kg once daily for 5 d before intravenous lps injection increased the plasma alanine aminotransferase (alt) activity to 2936.5+/-356.3 iu/l, a s ...200314519942
antibiotic resistance of propionibacterium acnes in acne vulgaris.acne vulgaris is a common skin disease affecting all ages. antibiotics remain the most common prescribed agent for the treatment of acne. improper use of antibiotics in the dermatological setting needs to be evaluated to prevent the increasing prevalence of antibiotic resistance.200314515616
[synthesis of vitamin b12 by propionic acid bacteria and its relation to the condition of cultivation]. 196214479051
microbiological examination of a natural vitamin b12 antagonist. 196114454895
a vitamin b12 antagonist isolated from propionbacterium shermanii. ii. investigations on the origin of factor x. 196114454894
a vitamin b12 antagonist isolated from propionbacterium shermanii. i. isolation, structure and microbiological examinations. 196114454893
[on the evolution of the vitamin b12 content of fermented milk. possibilities of enrichment by the addition of propionibacterium shermannii to the bacterial association]. 196114453983
[on the enrichment of kefir with vitamin b12 by the addition of a microbial association of propionibacterium shermanii]. 196114453982
[contribution to the biosynthesis of cyanocobalamine in propionibacterium shermanii cultures]. 195914446894
[biosynthesis of vitamin b12 porphyrins by a culture of propionic bacteria]. 196014435057
biosynthesis of cobalamins by cell suspensions of propionibacteria and streptomycetes. 195914431889
the lactic dehydrogenase of propionibacterium pentosaceum. 196014423361
[biosynthesis of various b-12 analogs fluorinated in the alkanolamine portion using bropionibacterium shermanii]. 196414339647
[gc percentage and classification. application to the bifidobacteria group and some related genera]. 196514336046
[the iosynthesis of b-12 factors v-1a and b from nucleotide-free b-12 polycarboxylic acids using propionibacterium shermanii]. 196414317976
separation of proteins from propionibacteria on cellulose ion exchangers. 196514302411
[on data on the amidation of nucleotide- and isopropanolamine-free b 12 polycarboxylic acids by propionibacterium shermanue]. 196514287720
[use of corn extract for fermentation of vitamin b 12 by propionibacteria]. 196414280262
[on the use of gamma-aminolevulinic acid in the biosynthesis of vitamin b-12 by propionibacterium shermanii at rest]. 196414262608
partial purification and properties of a single displacement trans-n-glycosidase. 196514253445
the formation of alpha-glycosidic 5'-nucleotides by a single displacement trans-n-glycosidase. 196514253444
[on the role of factor v-la in vitamin b12 metabolism by propionibacterium shermanii]. 196414251214
[the effect of oxidation-reduction conditions on the formation of vitamin b12 by propionic acid bacteria]. 196414237037
biocytin as a constituent of methylmalonyl-oxalacetic transcarboxylase and propionyl coa carboxylase of bacterial origin. 196414236632
methylmalonyl isomerase.iv. purification and properties of the enzyme from propionibacteria. 196414235536
chemical and biochemical studies of vitamin b12 and its related compounds. 13. comparison of availabilities of cyanocobalamin and hydroxocobalamin in 5,6-dimethylbenzimidazolycobamide coenzyme formation by propionibacterium shermanii. 196414234929
chemical and biochemical studies on vitamin b12 and its related compounds. xii. production of 5,6-dimethylbenzimidazolylcobamide coenzyme by cell suspension of propionibacterium shermanii. 196414234928
[use of corn extract for fermentation of vitamin b12 by propionibacteria]. 196414230831
chemical studies on vitamin b12 and its related compounds. ix. formation of cobinamide coenzyme by cultivation of propionibacterium shermanii in the presence of cobinamide. 196414218313
microbial degradation of corrinoids. i. vitamin b12.scott, w. m. (wayne state university, detroit, mich.), r. c. burgus, j. b. hufham, and j. j. pfiffner. microbial degradation of corrinoids. i. vitamin b(12). j. bacteriol. 88:581-585. 1964.-microorganisms isolated from a variety of soil, sewage, and mud samples, and stock cultures, were examined for the ability to degrade vitamin b(12). more than 200 isolates which attack the vitamin were examined, and they all demonstrated reversible fading of the red vitamin. the color was restored by aeration ...196414208491
utilization of l and d isomers of pantothenate and pantoate for microbial growth. 196414206904
chemical studies on vitamin b12 and its related compounds. vii. paper-electrophoretic examination on cobamides in propionibacterium shermanii cells cultivated in the presence of hydroxocobalamin or cyanocobalamin. 196314171859
chemical studies on vitamin b12 and its related compounds. viii. selection of culture media for production of 5,6-dimethylbenzimidazolylcobamide coenzyme by propionibacterium shermanii. 196314167715
chemical studies on vitamin b12 and its related compounds. vi. paper-electrophoretic examination on cobamides in propionibacterium shermanii cells cultivated in the presence of selected precursors. 196314167714
negative and positive ion mass analysis of dicarboxylic acids in studies on the mechanism of the methylmalonyl isomerase reaction. 196414167301
metabolism of methylmalonyl-coa and the role of biotin and b12 coenzymes. 196414167300
enzymic synthesis of corrin coenzymes. 196414167296
syntheses and biological behavior of additional corrinoid coenzymes. 196414167290
[study of vitamin b12 formation under different cultivation conditions of propionibacterium shermanii i propionibacterium freudenreichii]. 196414164224
influence of cobalt on propionibacterium freudenreichii. 196414156321
[the effect of mnso4 on the formation of vitamin b-12 by propionic acid bacteria]. 196414153597
[comparative study of the stimulation of the reticuloendothelial system by different strains of anaerobic corynebacterium and related species]. 196414146825
[assay of certain cobamides by the bioautographic method]. 196314137785
[products of heterotrophic co2 fixation in various microorganisms]. 196314119908
6-aminopenicillanic acid: inhibition of destruction of cephalosporin c by bacteria.6-aminopenicillanic acid, from which all the true penicillins are derived, inhibits the destruction of cephalosporin c by certain microorganisms. this inhibition is probably specific for "cephalosporinase." the enzymatic deacetylation of cephalosporin c is not affected by the acid.196414107444
purification and properties of enzymes involved in the propionic acid fermentation.allen, s. h. g. (western reserve university, cleveland, ohio), r. w. kellermeyer, r. l. stjernholm, and harland g. wood. purification and properties of enzymes involved in the propionic acid fermentation. j. bacteriol. 87:171-187. 1964.-chromatographic procedures are described for the separation and purification of phosphotransacetylase, acetyl kinase, malic dehydrogenase and coenzyme a (coa) transferase. purity of the enzymes was judged by homogeneity in an ultracentrifuge and by specific activ ...196414102852
chemical studies on vitamin b12 and its related compounds. v. biosynthesis of cobamides form x factor and dimethylbenzimidazole by growing cells of propionibacterium shermanii. 196314066697
effects of temperature on the growth and the production of corrinoids by propionibacterium shermanii. 196314065838
the biosynthesis of factors y1 and y2 by propionibacterium shermanii and p. freudenreichii. 196314065837
influence of ca-pantothenate and biotin on the growth and biosynthesis of corrinoids by propionibacteria. 196314065836
the effect of different casein hydrolysates on the growth and biosynthesis of corrinoids by propionibacteria. 196314065835
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