Publications
| Title | Abstract | Year(sorted ascending) Filter | PMID Filter |
|---|
| feeding period required by amblyomma aureolatum ticks for transmission of rickettsia rickettsii to vertebrate hosts. | rocky mountain spotted fever is endemic to the são paulo metropolitan area, brazil, where the etiologic agent, rickettsia rickettsii, is transmitted to humans by adult amblyomma aureolatum ticks. we determined the minimal feeding period required by a. aureolatum nymphs and adults to transmit r. rickettsii to guinea pigs. unfed nymphs and unfed adult ticks had to be attached to the host for >10 hours to transmit r. rickettsii. in contrast, fed ticks needed a minimum of 10 minutes of attachment to ... | 0 | 25148391 |
| comparative growth of spotted fever group rickettsia spp. strains in vero cells. | in brazil, the spotted fever group (sfg) rickettsia rickettsii and rickettsia parkeri related species are the etiological agents of spotted fever rickettsiosis. however, the sfg, rickettsia rhipicephali, that infects humans, has never been reported. the study of growth dynamics can be useful for understanding the infective and invasive capacity of these pathogens. here, the growth rates of the brazilian isolates r. rickettsii str. taiaçu, r. parkeri str. at#24, and r. rhipicephali hj#5, were eva ... | 0 | 27508322 |
| brazilian spotted fever: the importance of dermatological signs for early diagnosis. | brazilian spotted fever is an acute febrile infectious disease caused by rickettsia rickettsii, transmitted by tick bite. as this disease is rare and has high mortality rates in brazil, the clinical aspects and epidemiological data may help the diagnosis. we report a case of brazilian spotted fever in a 19-year-old patient who presented maculopapular exanthema in the palmar region and upper limbs, lymphadenopathy, fever, chills, headache, conjunctival hyperemia, nausea, vomiting, dyspnea, myalgi ... | 0 | 25830998 |
| rickettsia rickettsii in amblyomma patinoi ticks, colombia. | 0 | 25695155 | |
| [artificial transmission of rickettsia rickettsii (rocky mountain spotted fever) on insects, especially on body lice]. | 1952 | 13015971 | |
| interference phenomenon in animal infections with rickettsiae of rocky mountain spotted fever. | 1953 | 13037839 | |
| natural infection of the tick, amblyomma cajennense, with rickettsia rickettsii in panama. | 1953 | 13065638 | |
| a quantitative analysis of the factors involved in the variations in virulence of rickettsiae. | 1953 | 13076181 | |
| the epidemiology of rocky mountain spotted fever. i. the characterization of strain virulence of rickettsia rickettsii. | 1953 | 13080263 | |
| recovery of a rickettsia of the spotted fever group from microtus pennsylvanicus from virginia. | 1954 | 13167137 | |
| the epidemiology of rocky mountain spotted fever. ii. studies on the biological survival mechanism of rickettsia rickettsii. | 1954 | 13207101 | |
| persistence of rickettsia rickettsii in a patient recovered from rocky mountain spotted fever. | 1954 | 13212060 | |
| virulent-avirulent conversions of rickettsia rickettsii in vitro. | 1955 | 16589763 | |
| the effect of red blood cells on experimental infection of white rats with the r strain of rickettsia rickettsii. | 1958 | 13508659 | |
| identification of rickettsia rickettsii in the wood tick, dermacentor andersoni, by means of fluorescent antibody. | 1960 | 13688983 | |
| the transmission of low virulent strains of rickettsia rickettsii. | 1961 | 13737980 | |
| spotted fever vaccine; potency assay by direct challenge of vaccinated mice with toxin of rickettsia rickettsii. | 1961 | 13866804 | |
| factors affecting the growth of rickettsias of the spotted fever group in fertile hens' eggs. | 1962 | 13917322 | |
| [experiments on the problem of the transovarian transmission of rickettsia]. | 1962 | 14000181 | |
| ecology of rocky mountain spotted fever in western montana. i. isolation of rickettsia rickettsii from wild mammals. | 1962 | 14041199 | |
| [pullulation of rickettsia ricketsii in rats infected by intraperitoneal injections of blood]. | 1963 | 14101730 | |
| effect of dichlorotetrafluoroethane on the infectivity of viruses and rickettsiae sensitive to trichlorotrifluoroethane. | 1963 | 14131240 | |
| studies on infectious diseases in wild animals in utah. v. experimental rocky mountain spotted fever in the coyote, canis latrans lestes merriam. | 1963 | 14170550 | |
| [sensitivity of the bat artibus lituratus palmarum to rickettsia rickettsii]. | 1963 | 14190216 | |
| cell-wall constituents of rickettsiae and psittacosis-lymphogranuloma organisms. | 1963 | 13942448 | |
| [experimental transmission of rickettsiae to arthropods]. | 1964 | 14249721 | |
| the rocky mountain spotted fever group of rickettsias. | 1965 | 14318051 | |
| results of a five-year survey for certain enzootic diseases in the fauna of western utah. | 1965 | 14248984 | |
| comparison of the ultrastructure of several rickettsiae, ornithosis virus, and mycoplasma in tissue culture. | anderson, douglas r. (national cancer institute, bethesda, md.), hope e. hopps, michael f. barile, and barbara c. bernheim. comparison of the ultrastructure of several rickettsiae, ornithosis virus, and mycoplasma in tissue culture. j. bacteriol. 90:1387-1404. 1965.-in an effort to make a valid comparison of the ultrastructure of several intracellular parasites, selected agents were propagated under identical conditions in a single type of tissue culture cell; such infected preparations were pro ... | 1965 | 4954556 |
| rocky mountain spotted fever: clinical and laboratory observations of monkeys after respiratory exposure. | 1966 | 4956209 | |
| infectious diseases in wild animals in utah. vi. experimental infection of birds with rickettsia rickettsii. | lundgren, d. l. (university of utah, salt lake city), b. d. thorpe, and c. d. haskell. infectious diseases in wild animals in utah. vi. experimental infection of birds with rickettsia rickettsii. j. bacteriol. 91:963-966. 1966.-chickens, pigeons, pheasants, sparrow hawks, red-tailed hawks, ravens, magpies, and a marsh hawk were inoculated with rickettsia rickettsii, the etiological agent of rocky mountain spotted fever. the development and persistence of complement-fixing (cf) antibodies and ric ... | 1966 | 4956338 |
| aerosol infection of monkeys with rickettsia rickettsii. | 1966 | 4958344 | |
| relationship of cryptococcus neoformans to pigeons in milwaukee, wisconsin. | 1966 | 4959230 | |
| natural history of tick-borne spotted fever in the usa. susceptibility of small mammals to virulent rickettsia rickettsii. | in the ecology of spotted fever rickettsiae, one of the as yet unsolved problems concerns the significance of small animals in the distribution of rickettsia rickettsii in nature. in the bitter root valley of western montana, a great variety of rodents, rabbits and hares are known to serve as the preferred hosts for the immature stages of the vector tick, dermacentor andersoni.the authors analyse the susceptibility of various species of small mammals to virulent r. rickettsii and evaluate their ... | 1966 | 5296999 |
| infectious diseases in wild animals in utah. vii. experimental infection of rodents with rickettsia rickettsii. | 1966 | 5917635 | |
| staining rickettsiae in sections of formalin-fixed tissue; a 12-minute wright-buffer sequence. | 1966 | 4164156 | |
| synthesis and processing of molecules bearing thymus leukemia antigen. | thymus-leukemia (tl) antigens are expressed in murine lymphocytes under strict developmental regulation. to elucidate the molecular basis of tl expression, we have identified the molecular species that react with tl antiserum. at least three species can be resolved by metabolic radiolabeling of thymocytes and asl1 leukemia cells, lysis, immune precipitation, and sodium dodecyl sulfate-polyacrylamide. after a brief incubation with [35s]methionine, the only radioactive molecule recognized by tl an ... | 1966 | 315985 |
| [trnas-spermatozoal transmission of microorganisms; apropos of ultrastructural observations in insects]. | 1967 | 4229159 | |
| the adrenal response of hamsters, gerbils and rats to exogenous corticotrophin or unilateral adrenalectomy. | 1967 | 4289259 | |
| the pathogenesis of rocky mountain spotted fever in monkeys, infected by inhalation. | 1967 | 4964161 | |
| experimental infection of the cotton rat sigmodon hispidus with rickettsia rickettsii. | studies of experimental infection of the cotton rat, sigmodon hispidus, with the virulent sheila smith (r type) and the avirulent si 7 (u type) strains of rickettsia rickettsii were undertaken to evaluate the role of this native wild mammal in the ecology of rocky mountain spotted fever. the sheila smith strain, which was highly lethal for guinea pigs, was nonpathogenic for cotton rats. serial passage of the r-type strain in the cotton rat did not alter the virulence of the agent for cotton rats ... | 1967 | 4964475 |
| [a method of purifying leptospira cultures of extraneous microflora]. | 1967 | 4890957 | |
| the calculated nitrogen requirements of a single cell of escherichia coli. | 1968 | 4869285 | |
| experimental infection of lagomorphs with rickettsia rickettsii. | 1968 | 4967159 | |
| [exanthematous typhus in ecuador]. | 1968 | 4976285 | |
| intranuclear growth of rickettsia rickettsii. | 1968 | 4176643 | |
| "hypothetical mean organisms" of mycobacteria. a study of the classification of mycobacteria. | 1968 | 4179142 | |
| electrophoretic behavior of sonicated human serum proteins. | 1969 | 4190092 | |
| microbiological aspects of radiopasteurized chicken. nyo-3733-6. | 1969 | 4313244 | |
| plaque assay for rickettsia rickettsii. | a plaque technique for the assay of rickettsia rickettsii is described. the method employs primary chick or green monkey kidney monolayer cell cultures with either an agarose or special noble agar overlay. plaques were counted in 6 days and resultant titers correlated well with ld(50) end points obtained by a standard assay in embryonated eggs. identification of the plaque-forming organisms was accomplished by direct observation of rickettsiae-like bodies in the monolayer lesions, inhibition of ... | 1969 | 4977475 |
| [development of the antitoxin level in rabbit blood after injection of antidiphtheria serum. effect of a simultaneous injection of anatoxin]. | 1969 | 4981112 | |
| tests on ticks from wild birds collected in the eastern united states for rickettsiae and viruses. | 1969 | 4982220 | |
| fundus changes in rocky mountain spotted fever. | 1969 | 4974502 | |
| plaque assay system for several species of rickettsia. | the plaque assay developed in this laboratory for the bitter root strain of rickettsia rickettsii has recently been shown to be appropriate for other rickettsiae. | 1969 | 4984178 |
| [the mystery of the human auricle. 2]. | 1969 | 4922531 | |
| the role of selection in the host-mediated assay for mutagenicity. | 1969 | 4895527 | |
| the role of selection in the host-mediated assay for mutagenicity. | 1969 | 4895527 | |
| [mechanisms maintaining the genetic variability in a population (author's transl)]. | 1969 | 284828 | |
| transduction by bacteriophage t1. | amber mutants of the virulent coliphage t1 are able to transduce a wide variety of genetic characteristics from permissive to nonpermissive k strains of escherichia coli. | 1970 | 4920089 |
| [the sulfametopyrazine-pyrimethamine combination in the treatment of 100 p. falciparum malarial attacks]. | 1970 | 4928314 | |
| rocky mountain spotted fever. laboratory infection in a vaccinated individual. | 1970 | 4984704 | |
| serologic evidence of rickettsia canada infection of man. | 1970 | 4985949 | |
| [detection of rickettsial and ornithosis antigens in the indirect hemagglutination test using erythrocytes chemically joined to polycondensed immune globulins. 1. use of sensitized erythrocytes prepared with the use of borofluoride bis-diphenyldiazonium for rapid demonstration of the agent of tick-borne rickettsioses]. | 1970 | 4990580 | |
| hemolymph test. a technique for detection of rickettsiae in ticks. | 1970 | 4992724 | |
| evaluation of chloramphenicol acid succinate therapy of induced typhoid fever and rocky mountain spotted fever. | 1970 | 4982445 | |
| cardiovascular effects of angiotensin mediated by the central nervous system of the rabbit. | 1970 | 4313656 | |
| monkey-mouse hybrid cell lines containing the sv40 genome in a partially repressed state. | 1970 | 4313231 | |
| synthesis, assembly, and secretion of gamma globulin by mouse myeloma cells. i. adaptation of the merwin plasma cell tumor-11 to culture, cloning, and characterization of gamma globulin subunits. | mpc-11 myeloma tumor cells were adapted to growth in continuous culture. the cultured cells resembled the parent tumor in that they produced the fully assembled gamma globulin molecules as well as six unassembled molecules. although cultured and tumor cells synthesized excess light chains, the molar ratio of light (l) to heavy (h) chains was approximately 1.7:1 in the culture, and 3.5:1 in the tumor. the cultured cells also produced fewer half molecules and free light chains than the parent tumo ... | 1970 | 4189836 |
| haemocyte test--an easy, quick and reliable method for the detection of rickettsiae in ticks. | 1971 | 4103616 | |
| in vivo depression of hepatic succinoxidase by sulfhydryl compounds. | 1971 | 4324834 | |
| release of adrenal catecholamines by angiotensin i. | 1971 | 4328014 | |
| release of adrenal catecholamines by angiotensin i. | 1971 | 4328014 | |
| [economic losses from sheep toxoplasmosis]. | 1971 | 4256464 | |
| cardiac output, heart rate, and blood pressure as influenced by equi-antiarrhythmic doses of eight antifibrillatory agents. | 1971 | 4257638 | |
| [mechanism of the positive ionotropic action of theophylline on the mamalian heart. i. influence of extracellular ca, na and k concentrations and of reserpine]. | 1971 | 4257640 | |
| amount, class and specificity of antibody to the lipopolysaccharide of salmonella enteritidis after immunization by various schedules. | 1971 | 4993854 | |
| tick-borne typhus (rocky mountain spotted fever). epidemiologic trends, with particular reference to virginia. | 1971 | 4995481 | |
| rickettsioses of central america. | 1971 | 5002247 | |
| [lytic antibodies in antibacterial sera. ii. lytic activity of antibodies of different immunochemical type]. | 1971 | 4938664 | |
| characteristics of recovery processes in chicken spleen after trauma. | 1972 | 4663531 | |
| effect of dietary lysine level on plasma free amino acids in adult cockerels. | 1972 | 5022194 | |
| [pathogenesis of inflammation and mechanism of the anti-inflammatory action of experimental peloid therapy]. | 1972 | 5029442 | |
| the influence of chlorprothixene, methiothepine and reserpine on the resistance of the central nervous system of the rats against ischemia during ontogeny. | 1972 | 5052812 | |
| the effects of a soluble factor and of catecholamines on the activity of adenosine triphosphatase in subcellular fractions of rat brain. | 1972 | 4265047 | |
| engrafted human bone marrow and blood cells in culture. | 1972 | 4342797 | |
| attempted application of avian viral antibody test for detection of other microbial infections. | 1972 | 4342893 | |
| a factor stimulating the transcription by nucleolar rna polymerase in the nucleolus of rat liver. | 1972 | 4344283 | |
| phosphorylation of an endogenous membrane protein by an endogenous, membrane-associated cyclic adenosine 3',5'-monophosphate-dependent protein kinase in human erythrocyte ghosts. | 1972 | 4344993 | |
| inhibition of bacterial dna replication by 6-(p-hydroxy-phenylazo)-uracil. | 1972 | 4402396 | |
| septic conditions of the equine foot. | 1972 | 4404743 | |
| non-existence of shunts between afferent and efferent arterioles of juxtamedullary glomeruli in dog and rat kidneys. | 1972 | 4564193 | |
| [effect of a few carbon sources on the growth of mycobacterium bovis]. | 1972 | 4568984 | |
| preparation of vaccines for rocky mountain spotted fever from rickettsiae propagated in cell culture. | 1972 | 4621411 | |
| on the demonstration of circulating human endogenous pyrogen. | 1972 | 4621751 | |
| the occurrence of homogeneous antibodies and antigenic selection of kappa light chains to streptococcal carbohydrates in monash rabbits. | 1972 | 4625905 | |
| plaque formation in tissue cultures by rickettsia rickettsi isolated directly from whole blood and tick hemolymph. | a simple technique is described for isolation of rickettsia rickettsi directly from tick hemolymph and whole blood of rickettsemic guinea pigs by means of the plaque assay technique in primary chicken embryo tissue cultures. plaque-forming units per drop of hemolymph were almost 100-fold greater for partially engorged ticks than for unengorged ticks. rickettsemia in guinea pigs fed upon by infected ticks was detected as early as 24 hr before fever. no morphological differences were noted between ... | 1972 | 4629203 |
| studies of the rickettsial plaque assay technique. | a plaque assay system for pathogenic rickettsiae, which utilizes primary chick embryo tissue cultures, is described. it proved to be a highly reproducible measure of infectiousness for rickettsia rickettsi and r. typhi, which were employed in most studies; as well as for r. canada, r. prowazeki, r. sibirica, r. akari, r. conori, and coxiella burneti. plaque-forming units (pfu) were compared to direct rickettsial counts and to 50% infectious dose (id(50)) values for embryonated eggs, mice, and gu ... | 1972 | 4629250 |
| [therapeutic trial of etamocycline in the tropical disease department of the hôpital michel levy in marseilles]. | 1972 | 4629614 | |
| [the gas supply of hydrogen bacteria in submerged culture]. | 1972 | 4196475 | |
| [ticks as the media for a rickettsia habitatl (a survey of the literature)]. | 1973 | 4197102 |