| [regulation of 1-dehydrogenation and 20 beta-reduction of ketosteroids by microorganisms]. | regulation of two microbiological processes--1-dehydrogenation and 20 beta-reduction of ketosteroids--was studied using several exogeneous quinones which (a) stimulated 1-dehydrogenation and (b) inhibited the accompanying reaction, the reduction of 20-ketogroup of the steroid molecule. the least active compounds were benzoquinones. the best regulators are 1,4-naphthoquinone, 1,2-naphthoquinone, and 7-methoxy-1,2-naphthoquinone. possible mechanism of the action of naphthoquinones on mycobacterium ... | 1975 | 1214603 |
| piscirickettsia salmonis gen. nov., sp. nov., the causative agent of an epizootic disease in salmonid fishes. | a novel intracellular pathogen morphologically similar to the ehrlichiae has been isolated in cell culture and identified as the cause of an epizootic disease of salmonid fish. like the ehrlichiae, the salmonid pathogen, designated strain lf-89, replicates within membrane-bound cytoplasmic vacuoles in host cells. this agent is the first with characteristics of this type to be isolated from a fish. analysis of the lf-89 16s rrna indicated that, unlike the ehrlichiae, lf-89 is a gamma proteobacter ... | 1992 | 1371057 |
| 16s rrna phylogenetic analysis of the bacterial endosymbionts associated with cytoplasmic incompatibility in insects. | bacterial endosymbionts of insects have long been implicated in the phenomenon of cytoplasmic incompatibility, in which certain crosses between symbiont-infected individuals lead to embryonic death or sex ratio distortion. the taxonomic position of these bacteria has, however, not been known with any certainty. similarly, the relatedness of the bacteria infecting various insect hosts has been unclear. the inability to grow these bacteria on defined cell-free medium has been the major factor unde ... | 1992 | 1557375 |
| phylogenetic diversity of the rickettsiae. | small subunit rrna sequences have been determined for representative strains of six species of the family rickettsiaceae: rickettsia rickettsii, rickettsia prowazekii, rickettsia typhi, coxiella burnetii, ehrlichia risticii, and wolbachia persica. the relationships among these sequences and those of other eubacteria show that all members of the family rickettsiaceae belong to the so-called purple bacterial phylum. the three representatives of the genus rickettsia form a tight monophyletic cluste ... | 1989 | 2753854 |
| salicylate effects on proton gradient dissipation by isolated gastric mucosal surface cells. | the effects of salicylate were examined on na+/h+ exchange by isolated gastric mucosal surface cells loaded with h+ and resuspended in a buffered medium. choline salicylate (ph 7.4) increases the dissipation of an intracellular proton gradient which was measured using acridine orange. the exchange of extracellular na+ with intracellular h+ by surface cells not only remains intact but also is enhanced upon exposure to salicylate. this was confirmed by cellular uptake of 22na and titration of cell ... | 1986 | 3020564 |
| despite lack of monospecific anti-drw13 sera, a corresponding class ii determinant can be defined by a drw13 restricted anti-influenza virus t cell clone. | the study of a t3+ t4+ t8- human t cell clone cotc2 with both specific proliferative response and cytolytic activity for influenza a virus infected cells reveals that: the restricting element of this clone is strongly associated with drw13 molecule(s) as seen by the study of a large panel of antigen presenting cells (apc) and by the observation that monoclonal antibodies (moab) specific for dr molecules inhibit its proliferative activity while anti-dq moab do not. these results indicate that the ... | 1986 | 3485624 |
| [research of complement fixing antibodies for certain respiratory viruses, mycoplasma pneumoniae and coxiella burneti in a community during the first trimester of 1967]. | | 1968 | 4300027 |
| evidence for the participation of a cholinergic receptor in adrenergic transmission. | | 1970 | 4319312 |
| rickettsiaceae and chlamydiaceae: comparative electron microscopic studies. | the structure and cytopathology of obligate intracellular bacteria belonging to families rickettsiaceae and chlamydiaceae and their interaction with eukaryotic host cells were compared in electron microscopic studies. "rickettsia-like" and "chlamydia-like" types of organization of bacterial cells and their interaction with host cells are presented. the rickettsia-like type is characterized by short rod-shaped cells multiplying freely ( extravacuolarly ) in the cytoplasm or nucleoplasm of the hos ... | 1984 | 6145350 |
| analysis of 16s ribosomal dna sequences of francisella strains and utilization for determination of the phylogeny of the genus and for identification of strains by pcr. | the 16s ribosomal dnas (rdnas) of two strains of francisella tularensis and one strain of francisella philomiragia were sequenced. on the basis of phylogenetic analysis data, the genus francisella was placed in the gamma subclass of the proteobacteria. the most closely related organism was the intracellular bacterium wolbachia persica. the sequenced 16s rdna molecules of the francisella species exhibited very high levels of similarity (98.5 to 99.9%). two variable regions, comprising 390 to 450 ... | 1994 | 8123561 |
| endosymbionts of ticks and their relationship to wolbachia spp. and tick-borne pathogens of humans and animals. | the presence, internal distribution, and phylogenetic position of endosymbiotic bacteria from four species of specific-pathogen-free ticks were studied. these included the hard ticks ixodes scapularis (the black-legged tick), rhipicephalus sanguineus (the brown dog tick), and haemaphysalis longicornis and the african soft tick ornithodoros moubata. pcr assays for bacteria, using two sets of general primers for eubacterial 16s and 23s rrna genes (rdnas) and seven sets of specific primers for wolb ... | 1997 | 9327557 |
| respiration of a rickettsialike microorganism, wolbachia persica. | | 1962 | 14005862 |
| lipid metabolism of the rickettsialike microorganism wolbachia persica. i. incorporation of long chain fatty acids into phosphatides. | | 1964 | 14118046 |
| lipid metabolism of the rickettsialike microorganism wolbachia persica. ii. studies with labeled nonlipid substrates. | | 1964 | 14118047 |
| lipid metabolism of the rickettsialike microorganism wolbachia persica. iii. comparison with other metabolic activities. | | 1964 | 14118048 |
| studies on the cell envelope of wolbachia persica. | | 1964 | 14144721 |
| fangia hongkongensis gen. nov., sp. nov., a novel gammaproteobacterium of the order thiotrichales isolated from coastal seawater of hong kong. | a gram-negative, coccobacillus-shaped, aerobic bacterium, designated strain ust040201-002t, was isolated in february 2004 from seawater at the outlet of a sandfilter in port shelter, hong kong sar, china. this strain possessed ubiquinone-8; its 16s rrna gene sequence shared only 91% similarity with the sequence from caedibacter taeniospiralis and 89-90% similarity with sequences from francisella tularensis, francisella novicida, francisella philomiragia and wolbachia persica. 16s rrna gene seque ... | 2007 | 17978237 |
| [intestinal parasitoses]. | while intestinal parasites are infrequent causes of acute diarrhea, investigations in travellers, children, homosexuals and immunocompromised persons who have had diarrhea for more than 2-4 weeks should include stool analyses for intestinal parasites. intestinal helminthiases are treated with pyrantel pamoate, mebendazole, thiabendazole, albendazole, praziquantel or niclosamide. for treatment of intestinal protozoa, ornidazole (or other benzimidazoles), diloxanide furoate and co-trimoxazole are ... | 2013 | 3726513 |
| [spectroscopic study of some substituted n-(2-diethylamino-ethyl) benzamides]. | | 2015 | 4774835 |
| bicaudate index in computerized tomography of huntington disease and cerebral atrophy. | ventricular sizes on computerized tomographic (ct) scans were compared in seven patients with huntington disease, 20 patients with cerebral atrophy, and 20 normal controls. the bicaudate index--the ratio of the width of both lateral ventricles at the level of the heads of the caudate nuclei to the distance between the outer tables of the skull at the same level--significantly discriminated among the three groups. the bicaudate indices were: huntington disease 0.209 +/- 0.007, cerebral atrophy 0. ... | 2003 | 152416 |
| simultaneous determination of serum cholesterol and triglycerides after preliminary column chromatography. | an isopropanolic extract of serum can be made suitable for the simultaneous estimation of cholesterol and triglycerides by passing it through a commercially-available chromatographic column containing activated metallic oxides in which alumina predominates. no centrifugation step nor phase separation is required. use of the purified extract allows existing methods to be simplified and shortened without loss of reproducibility or stability. results compare well with those obtained by traditional ... | 2005 | 1112057 |
| iodine-131 mibg scintigraphy of the extremities in metastatic pheochromocytoma and neuroblastoma. | iodine-131 mibg scintigraphy may be used to determine the presence or absence of metastases to the appendicular skeleton in malignant pheochromocytoma and neuroblastoma. normal bones show no uptake of [131i]mibg and the joints are seen as photon-deficient areas surrounded by background muscle activity. discrete concentrations of radioactivity in bone are often seen in patients with malignant pheochromocytoma and neuroblastoma. bone marrow involvement in neuroblastoma may be indicated by diffuse ... | 2011 | 3102702 |
| ventricular arrhythmias in normal individuals and athletes. | | 2011 | 3042408 |
| genome characterisation of the genus francisella reveals insight into similar evolutionary paths in pathogens of mammals and fish. | prior to this study, relatively few strains of francisella had been genome-sequenced. previously published francisella genome sequences were largely restricted to the zoonotic agent f. tularensis. only limited data were available for other members of the francisella genus, including f. philomiragia, an opportunistic pathogen of humans, f. noatunensis, a serious pathogen of farmed fish, and other less well described endosymbiotic species. | 2012 | 22727144 |
| reclassification of wolbachia persica as francisella persica comb. nov. and emended description of the family francisellaceae. | the taxonomic status of the bacterium wolbachia persica is described, and based on the evidence presented, transfer of this species to the genus francisella as francisella persica comb. nov. is proposed. this reclassification is supported by data generated from genomic comparisons of w. persica atcc vr-331t ( = fsc845t = dsm 101678t) to other near neighbours, including francisella tularensis subsp. novicida. the full-length 16s rrna gene sequence of strain atcc vr-331t had 98.5 % nucleotide iden ... | 2016 | 26747442 |