| isolation and serological survey of chlamydiosis in feral pigeons and crows in hokkaido. | | 1984 | 6748450 |
| serotyping of chlamydia psittaci by the micro-immunofluorescence test: isolates of ovine origin. | the micro-immunofluorescence test was successfully applied to seven ovine isolates which could be separated into two distinct immunotypes. the pattern of reactivity was similar to that elucidated by the plaque reduction test and confirmed by growth characteristics and biotyping. | 1982 | 6752025 |
| [comparison of 2 immunofluorescent technics for detection of anti-chlamydia antibodies]. | | 1982 | 6759508 |
| [experimental study of an antibody sepharose diagnostic reagent for ornithosis]. | | 1982 | 6760554 |
| embolic phenomena in chlamydial infection. | | 1980 | 6764481 |
| [serologic diagnosis of human ornitho-psittacosis. value of the indirect immunofluorescent test]. | | 1982 | 6765105 |
| [isolation of chlamydia psittaci from bull ejaculate]. | during the repeated serological examination (rvk) in five breeding bulls the positive levels of antibodies to chlamydia psittaci in titre 1 : 128 were found. in the isolation experiments the pelleted ejaculates deposited in liquid nitrogen were used. the isolation of chlamydia psittaci on yolk sacs of chicken embryos was positive in two breeding bulls. the isolated strains are labelled gn-33 and ok-107. the serological examination of blood samples was in all five breeding bulls negative on bruce ... | 1980 | 6777949 |
| [epidemiology and diagnosis of legionella infections in austria (author's transl)]. | out of 2,105 patients with atypical pneumonia and febrile infections 15 cases of legionellosis were diagnosed by the indirect immunofluorescent antibody test (ifa) in austria from the middle of 1977 to the end of 1979. among the patients with the diagnosis of atypical pneumonia legionnaires' disease was found in 0.65%. among those patients whose sera were examined because of suspected legionella infection the frequency was 1.96% (p less than 0.1). therefore it may assumed that some symptoms of l ... | 1981 | 6791407 |
| [preparation of cf and ha antigens for serological diagnosis of chlamydia psittacosis and serological survey among inhabitants in aichi prefecture (author's transl)]. | | 1981 | 6799592 |
| pregnancy complicated by psittacosis acquired from sheep. | two cases of chlamydial infection in pregnant women are described, the first serologically proved and the second suspected. in both cases the infection was probably contracted from sheep suffering with enzootic abortion. both patients were farmers' wives who had helped their husbands and lambing and developed a non-specific febrile illness in late pregnancy. in the first case as there was no clinical improvement after 26 hours the patient was delivered by caesarean section of a live infant in go ... | 1982 | 6803874 |
| [pathogenicity of chlamydia. findings in human medicine (author's transl)]. | | 1982 | 6804856 |
| animal models for the study of chlamydial infections of the urogenital tract. | various experimental animal models have been used for the study of chlamydial infections of the urogenital tract. experimental urethral and vaginal inoculation of guinea pigs with the guinea-pig inclusion conjunctivitis agent provoke urogenital infection. direct inoculation of this agent into the uterine horns of guinea pigs induced an acute self-limiting salpingitis. in cats, urethritis and vaginitis have been produced with the feline keratoconjunctivitis agent. the results obtained by using th ... | 1982 | 6813962 |
| [isolation of chlamydia psittaci and moraxella bovis from infectious keratoconjunctivitis in lambs]. | out of 189 lambs in the flock, 25 animals suffered from bilateral or unilateral conjunctivitis, or keratoconjunctivitis. by serological examination (rvk), positive levels of antibodies to the group-specific antigen of chl. psittaci were found in three out of six lambs examined by laboratory methods. bacteriological examination of eye smears of six lambs showed in four cases the infection by microorganisms of moraxella bovis. smears from the conjunctivas of these lambs were after preparation inst ... | 1982 | 6814042 |
| viral and mycoplasmal antibodies in patients with myocardial infarction. | the suggestion that infection might provoke myocardial infarction prompted a controlled study among 49 patients with myocardial infarction for antibody titres to 22 viruses, and to mycoplasma pneumoniae and chlamydia psittaci. the frequency of significant rises in antibody titres was similar in patients with myocardial infarction, 7 (14%) out of 49, and in control patients, 8 (22%) out of 37. thus, in our limited series we could not confirm the hypothesis that viral or mycoplasmal infection are ... | 1981 | 6814338 |
| resistance of wild birds to infection by chlamydia psittaci of mammalian origin. | numerous species of birds are natural hosts of c. psittaci and have been implicated as sources of certain strains that cause disease in other vertebrate species, notably those producing psittacosis or ornithosis in humans [1]. although direct evidence of their involvement in the transmission of chlamydiae to other mammals, especially domesticated ruminants, has not been reported, a careful examination of this possibility is justified [1]. when inoculated parenterally, polyarthritis-producing chl ... | 1983 | 6822754 |
| severe hepatic damage after acetaminophen use in psittacosis. | a 63-year-old man with acute psittacosis had severe hepatic damage after ingesting about 10 g of acetaminophen over a 48 hour period. transaminase levels showed striking elevation, with a serum glutamic-oxaloacetic transaminase level of over 15,000 iu/liter, and decreased rapidly, consistent with a toxic insult. no other etiologic agents were identified by history or serologic testing to explain this degree of damage. liver histologic findings at autopsy showed severe central necrosis. although ... | 1983 | 6824012 |
| differential susceptibility of chlamydiae to exogenous fibroblast interferon. | mouse fibroblasts (l cells) were incubated for 5 h with 1,000 u of murine fibroblast interferon (muifn alpha+ beta) per ml and then were infected with either chlamydia trachomatis (lgv 440), c. psittaci (6bc), or c. psittaci (cal 10). intracellular development of c. trachomatis was reduced 90% in interferon-treated cells 24 h after infection when compared with controls, whereas c. psittaci growth was not affected in interferon-treated cells. | 1983 | 6832807 |
| inhibition of onset of overt multiplication of chlamydia psittaci in persistently infected mouse fibroblasts (l cells). | when monolayers of mouse fibroblasts (l cells) persistently infected with chlamydia psittaci (strain 6bc) were dispersed in medium 199 and plated out in new flasks, the monolayers that grew out consisted almost exclusively of inclusion-free host cells that retained full resistance to superinfection with c. psittaci (covert infection). after a delay that was inversely proportional to the initial density of the newly transferred l cell population, the percentage of host cells containing visible ch ... | 1983 | 6832822 |
| multiantibiotic resistance in chlamydia psittaci from ducks. | | 1983 | 6836912 |
| chlamydiosis. | | 1983 | 6839126 |
| inhibition of chlamydia psittaci in oxidatively active thioglycolate-elicited macrophages: distinction between lymphokine-mediated oxygen-dependent and oxygen-independent macrophage activation. | immune sensitization of spleen cells was required to generate lymphokines (lk) that activated thioglycolate-elicited peritoneal macrophages (thio macs) to respond via both oxygen-dependent and oxygen-independent systems. lk produced by incubating spleen cells from immunized a/j and laf mice with concanavalin a stimulated a response by thio macs to phorbol-12-myristate-13-acetate (pma)-induced chemiluminescence and activated these cells to inhibit intracellular chlamydia psittaci replication. con ... | 1983 | 6840848 |
| chlamydia psittaci elementary body envelopes: ingestion and inhibition of phagolysosome fusion. | the cell surface of chlamydia psittaci seems important for establishing infection since (i) uv-treated elementary bodies (eb) attach to and are ingested by l cells and (ii) heat or antibody treatment decreases attachment to l cells and promotes the fusion of chlamydiae-containing phagosomes with lysosomes in macrophages. in the studies reported here, [3h]uridine-labeled uv-treated eb also persisted in mouse resident peritoneal macrophages and l cells, suggesting that phagosome-lysosome fusion is ... | 1983 | 6840860 |
| disulfide-linked oligomers of the major outer membrane protein of chlamydiae. | the major outer membrane protein of chlamydial elementary bodies was identified in dimer, trimer, and other multimeric forms. these natural multimers were stabilized by disulfide-mediated cross-linking. such cross-linking of outer membrane proteins may play an important role in the formation and evolution of chlamydial cell wall structure. | 1983 | 6841322 |
| laboratory transfer of a virus between isolates of chlamydia psittaci. | | 1983 | 6845606 |
| a mouse model to compare virulence of abortive and intestinal ovine strains of chlamydia psittaci: influence of the route of inoculation. | strains of chlamydia psittaci isolated from faeces of a clinically healthy ewe (intestinal strain ib1) and from the foetus of an aborted ewe (abortive strain ab7) were injected into pregnant mice via the intraperitoneal route and into non-pregnant mice via the footpad route. in pregnant mice the response to inoculation was followed by recording the performance and viability of infant mice, and in the non-pregnant mice by an enlargement of the spleen and colonization of both the spleen and poplit ... | 1983 | 6847040 |
| isolation and characterization of macrophage phagosomes containing infectious and heat-inactivated chlamydia psittaci: two phagosomes with different intracellular behaviors. | infectious chlamydia psittaci enters macrophages via a cytochalasin b-insensitive pathway in which chlamydia-containing phagosomes do not fuse with lysosomes; heat-inactivated c. psittaci enters macrophages via a route in which phagosomes do fuse with lysosomes. in an attempt to explain these differences, phagosomes containing infectious and heated chlamydiae were isolated from mouse macrophages by a procedure developed to isolate l-cell chlamydial phagosomes by rate zonal centrifugation. macrop ... | 1983 | 6852926 |
| lymphokine enhances oxygen-independent activity against intracellular pathogens. | to determine if mechanisms other than the generation of toxic oxygen intermediates are active against intracellular pathogens, oxidatively deficient mouse l cells and monocyte-derived macrophages from patients with chronic granulomatous disease were stimulated with soluble lymphocyte products. despite no enhancement in oxidative activity, these cells displayed effective microbistatic activity against both t. gondii and c. psittaci. these results suggest a potential role for nonoxidative mechanis ... | 1983 | 6864162 |
| [a method of production of concentrated and purified vaccine against chlamydia abortion in sheep and its testing in guinea pigs]. | a method was developed for the production of a new, present day, concentrated depot-vaccine against the chlamydial abortion of sheep. employed were a number of methods -- those with chick embryos, freezing and thawing with the use of liquid nitrogen, inactivation with formalin, purifying and concentration through differential centrifugation and supercentrifugation, with the use of an aluminum hydroxide ingredient, electron microscopy, and the respective control series, etc. the vaccine is charac ... | 1983 | 6868364 |
| lymphokine stimulated macrophages inhibit intracellular chlamydia psittaci replication by mechanisms distinct from intracellular inhibition of toxoplasma gondii replication. | | 1983 | 6869092 |
| [susceptibility of the macrophages of inbred strain mice to chlamydia psittaci]. | chlamydia psittaci was injected in the peritoneal cavity of different strains of inbred mice. not all of them develop a clinical disease; some, such as c 3 h, are very susceptible and died within 6 days. c 57 bl, however, are resistant even to a very high dose. we still do not know the exact mechanism of the natural resistance. this is the reason why we are trying to analyse the role of the macrophage. this cell is particularly important in c. psittaci infection, because it harbours the obligate ... | 1983 | 6871493 |
| susceptibility of chlamydia psittaci (ovis) to antimicrobial agents. | minimum inhibitory (mic) and minimal lethal (mlc) concentrations of 30 antimicrobial agents were determined for field strains and for the a22 eae vaccine strain of chlamydia psittaci (ovis). no differences in susceptibility could be detected between strains. the antimicrobials could be divided into four groups. group a had no effect on growth and development, group b were bacteriostatic at concentrations in excess of 100 mg/l, group c were bacteriostatic at concentrations of 10 mg/l or less but ... | 1983 | 6874628 |
| isolation and identification of chlamydia psittaci from collared doves (streptopelia decaocto). | | 1983 | 6879973 |
| infection control update! chlamydia. | | 1981 | 6907075 |
| interaction of chlamydiae with host cells and mucous surfaces. | for chlamydiae, as obligate intracellular parasites, attachment to and ingestion by host cells are essential steps in reproduction. their attachment site appears to be heat-sensitive; it has not been correlated with any morphological entity. antibody blocks chlamydial attachment to cells and, for certain chlamydia psittaci and chlamydia trachomatis strains which are highly infective for cell cultures, n-acetylglucosamine appears to contribute to cell receptor specificity. sialic acid residues ha ... | 1981 | 6911075 |
| [chlamydia respiratory infections]. | | 1982 | 6925319 |
| biology of chlamydia. | the genus chlamydia consists of two species, chlamydia trachomatis and c. psittaci. the former includes (a) the trachoma/inclusion conjunctivitis (tric) agents, subdivided into the serotypes a-k; (b) the lymphogranuloma venereum (lgv) agents, subdivided into the serogroups (l 1-3); and (c) the mouse penumonitis agent. the major characteristics differentiating the two species are sulfonamide susceptibility and the formation of distinct inclusion granula in host cells, in the case of c. trachomati ... | 1982 | 6958006 |
| unusual manifestations of chlamydia trachomatis infections. | systemic infections with chlamydia trachomatis are known to occur with the agents of lymphogranuloma venereum but are not generally recognized to occur with the trachoma and inclusion conjunctivitis (tric) agents, i.e., immunotypes a-k. the clinical spectrum of tric agent infections has expanded, however, and now includes deep-seated genital infections such as epididymitis and salpingitis, as well as infections in neonates. endocarditis, pneumonia in adults, otitis media, choroiditis and erythem ... | 1982 | 6958008 |
| infectivity of penicillin-induced chlamydia psittaci forms for cell cultures from the chorioallantoic membrane of chick embryos. | l-cells were infected at high multiplicity with meningopneumonitis organsims (mp) and incubated in medium with penicillin (200 units/ml) and without the drug. at intervals up to 36 hours cells were removed and l-cell associated chlamydial infectivity was determined for cell cultures from the chorioallantoic membrane (cam) of chick embryos which were treated before inoculation with diethylaminoethyl (deae)-dextran. in control l-cells, the infectivity decreased at 8 hours and reached it lowest lev ... | 1980 | 6999778 |
| chlamydiae. | | 1980 | 7002026 |
| [survival capacity of chlamydiae and coxiella burnetii under environmental conditions (author's transl)]. | | 1980 | 7006982 |
| [current knowledge concerning pathogenicity of mammalian chlamydial strains for humans]. | | 1980 | 7008768 |
| cell-mediated and humoral immune responses to chlamydial antigens in guinea pigs infected ocularly with the agent of guinea pig inclusion conjunctivitis. | cell-mediated immune response and humoral response to chlamydial antigens were investigated in guinea pigs infected with the agent of guinea pig inclusion conjunctivitis (gpic). pronounced cell-mediated immune response to the homologous antigen, as well as to two other chlamydial antigens, 6bc (chlamydia psittaci) and lb-1 (c. trachomatis), occurred in all infected animals. cell-mediated immune response to gpic, and to a lesser extent to 6bc and lb-1 as well, was enhanced with time after infecti ... | 1981 | 7012031 |
| chlamydial antigens stabilized with formalin for use in the micro-immunofluorescence test. | formalinized antigen suspensions prepared by differential centrifugation from crude infected yolk sacs and stored at 4 degrees c were satisfactory antigens during at least 36 weeks when used in chlamydial micro-immunofluorescence procedures. | 1980 | 7012175 |
| inhibition of phagolysosome fusion is localized to chlamydia psittaci-laden vacuoles. | intracellular survival of chlamydia psittaci is in part dependent on the ability of the organism to thwart phagolysosome formation. circumvention of phagolysosome fusion could be either localized to chlamydia-laden vacuoles or generalized to all phagosomes in the host cell. to determine which of these modes is in operation the ability of chlamydia elementary and reticulate bodies to protect saccharomyces cerevisiae from degradation in macrophage phagolysosomes was examined via acridine orange an ... | 1981 | 7019080 |
| a modified isolation technique for chlamydia psittaci in l-cells treated with cycloheximide and glucocorticoid. | various auxiliary treatments of l-cells employed for the isolation and cultivation of c. psittaci were investigated in order to develop an improved method for the detection of the agent, in addition to the aid obtained by centrifugation and cycloheximide treatment. glucocorticoid treatment increased the observed number of inclusions considerably through a preservative effect on host cells and enhanced an spontaneous re-infection. besides, the hormone made the scanning of cell culture for inclusi ... | 1981 | 7020334 |
| [serotyping of "chlamydia psittaci" by microimmunofluorescence test (author's transl)]. | antisera from inbred mice (c57bl and c3h) improve the specificity of the microimmunofluorescence test. we used this method in the serotyping of 6 strains of chlamydia psittaci of differing origin. inspite of relatively marked cross-reactions it was possible to distinguish 3 groups: - the first group consisted of 2 strains of avian origin and the lgv strain 33l, - the second group consisted of 2 strains responsible for enzootic abortion in ewes, - in the third group, only 1 strain was found and t ... | 1981 | 7020525 |
| c. psittaci 6 bc soluble hemagglutinin: factors influencing the red cell receptor sites. | human blood-group a, b and o erythrocytes did not possess receptor sites for either crude or ether-ethanol extracted chlamydial soluble hemagglutinin. sensitive chicken erythrocytes were agglutinated to higher titres by ether-ethanol extracted than by crude chlamydial hemagglutinin. studies indicated that trypsin-, chymotrypsin-, neuramanidase-sensitive receptor sites were not essential for binding of ether-ethanol extracted chlamydial hemagglutinin; neither were beta-glucuronidase- nor periodat ... | 1981 | 7023129 |
| serum and tear antibodies to chlamydia after reinfection with guinea pig inclusion conjunctivitis agent. | repeated inoculation of th eyes of guinea pigs with the naturally occurring chlamydia psittaci agent, guinea pig inclusion conjunctivitis (gpic), showed that animals gradually become susceptible to reinfection with the passage of time after primary infection. higher levels of serum igg antibody had a significant association with resistance to challenge inoculation only with a high dose (250 eld50) but not with a low dose (25 eld50) inoculum. with each inoculum, however, some animals with high se ... | 1981 | 7031009 |
| the isolation of salmonellae, newcastle disease virus and other infectious agents from quarantined imported birds in canada. | necropsy and culture results are presented for 269 consignments of imported birds (mainly psittacine and passerine species) examined between january 1977 and august 1980. consignments were submitted for diagnosis of clinical illness or deaths occurring among these birds while they were in quarantine before entry into canada. enteritis and injury were the most frequent diagnoses. pathogens or potential pathogens were isolated from 77% of consignments. newcastle disease virus was isolated nine tim ... | 1981 | 7039785 |
| [newer diagnostic procedures for chlamydial diseases (author's transl)]. | chlamydiales are bacteries showing a growth cycle unique among procaryotes. the two species chlamydia trachomatis and chlamydia psittaci are genetically very distant and their pathogenicity for man is very distinct. human chlamydial infections by chlamydia trachomatis are diseases chiefly sexually transmitted and their epidemiological importance is growing. the relationship between chlamydial infections, reiter disease, and cat scratch disease are discussed. the various laboratory diagnostic pro ... | 1981 | 7041060 |
| spectrum of human chlamydial infections. | | 1981 | 7041427 |
| the relation of basic biology to pathogenic potential in the genus chlamydia. | chlamydiae are obligately intracellular procaryotic parasites, and their activities as agents of human disease are determined to a large degree by their intracellular way of life. the inside of a host cell is a hostile environment, and few microorganisms survive and multiply intracellularly. those that do have evolved adaptations that fit them for life inside other cells. apart from the viruses, chlamydiae are the infectious agents most highly adapted to intracellular life. of all the properties ... | 1982 | 7044979 |
| [in vitro and in vivo activity of spiramycine on chlamydia (author's transl)]. | in vitro study of spiramycine action on c. psittaci and c. trachomatis demonstrates that this antibiotic is active in a concentration similar to that found in the serum of patients who have received an injection of 4 g. however, it should be noted that even with a higher dose, few inclusions are still present. on the other hand, the action of spiramycine on mice infected with c. psittaci is highly efficient. the difference between the in vitro results and the excellent in vivo results could be e ... | 1982 | 7050851 |
| surface properties of chlamydia psittaci. | the surface properties of elementary bodies of chlamydia psittaci were investigated by diethylaminoethyl-sephadex chromatography, cytophoresis, partitioning in an aqueous polymer two-phase system, and hydrophobic interaction chromatography of the organism. the surface of c. psittaci was found to be hydrophobic and negatively charged at ph 7 and to have an isoelectric point of about ph 5. reagents which block free carboxyl groups altered the surface charge of c. psittaci and caused the organism t ... | 1980 | 7053063 |
| lymphokine-mediated microbistatic mechanisms restrict chlamydia psittaci growth in macrophages. | the obligate intracellular procaryote chlamydia psittaci replicated in cultures of macrophages taken from the peritoneal cavities of unstimulated or thioglycollate-elicited a/j mice. when treated with supernatant fluids (lymphokines) from c. psittaci-immune mice spleen cells that were stimulated for 24 hr in vitro by the mitogen concanavalin a, resident macrophages supplemented with heart infusion broth (8 mg/ml) and elicited macrophages markedly suppressed intracellular chlamydial development. ... | 1982 | 7054284 |
| subacute chlamydial endocarditis. | | 1982 | 7054567 |
| modulation of the host immune response as a result of chlamydia psittaci infection. | after intraperitoneal injection of mice with infectious, inactivated, or envelope preparations of the elementary body of chlamydia psittaci, lymphocyte transformation of spleen cells to the mitogens concanavalin a, phytohemagglutinin, and lipopolysaccharide was significantly reduced 1 and 2 weeks postinjection. lymphocyte response returned to the control values by 4 weeks. similarly, transformation of cells by chlamydial antigen was not detected until 4 weeks postinjection. injection of the noni ... | 1982 | 7056575 |
| effects of corticosteroids and cyclophosphamide on a mouse model of chlamydia trachomatis pneumonitis. | suppression of the inflammatory reaction with daily doses of cortisone acetate or cyclophosphamide substantially prolonged the pulmonary infection in mice which had been intranasally inoculated with a trachoma biotype of chlamydia trachomatis. titration of organisms recovered from the lungs of treated mice revealed a drop in titer after day 2 (postinfection), followed by a prominent increase on day 6. in cyclophosphamide-treated mice the infection was resolved after day 12, whereas in cortisone ... | 1982 | 7056581 |
| electron microscopic observations of surface projections on chlamydia psittaci reticulate bodies. | electron microscopic observations were carried out to confirm the presence of surface projections on chlamydia psittaci reticulate bodies (rbs). the morphology of the projections on rbs was identical with that on elementary bodies (ebs); one end of each projection was connected with the cytoplasmic membrane, but the other end of the projection protruded beyond the cell wall through a fine hole or rosette in the cell wall. the results demonstrated that the rosettes seen in rb cell walls were morp ... | 1982 | 7061397 |
| chlamydia psittaci isolated from the eyes of domestic ducks (anas platyrhynchos) with conjunctivitis and rhinitis. | | 1982 | 7064325 |
| chlamydia psittaci induced pneumonia in a horse. | an agent lethal to embryonated chicken eggs was isolated from lung tissues of a quarter horse mare with a fatal respiratory disease. the lesions induced in embryonated chicken eggs, the tinctoral properties, the ultrastructural morphology, the resistance of the organism to sodium sulfadiazine, and the presence of a chlamydial complement fixing antigen, identify this isolate as a member of the family chlamydiaceae and suggest the agent to be chlamydia psittaci. two shetland ponies experimentally ... | 1982 | 7067460 |
| viral respiratory infections in asthmatic children staying in a mountain resort. | in 32 mainly atopic children (aged 9-16 years) staying in a mountain resort the effects of viral infections on the course of asthma were studied. daily surveillance was made of respiratory infection symptoms and clinical parameters for asthma, including forced expiratory volume in 1s (fev1). serology for several respiratory viruses. mycoplasma pneumoniae and chlamydia psittaci was done. in 58 symptomatic respiratory infections (sri) 39 asthmatic exacerbations occurred (67%). eighteen sris of vir ... | 1982 | 7067764 |
| cytotoxic cells induced after chlamydia psittaci infection in mice. | the ability of spleen cells from chlamydia psittaci-infected mice to lyse c. psittaci-infected and uninfected target cell monolayers was studied. the cytotoxicity assay used was a terminal label method in which the number of adherent target cells surviving the interaction with effector cells was determined by measuring the uptake of [3h]uridine by such cells. it was observed that in the first few days postinfection (3 to 5), spleens contained cells that lysed infected and uninfected targets with ... | 1982 | 7068208 |
| antigenic analysis of the major outer membrane protein of chlamydia spp. | the major outer membrane proteins (momps) of several chlamydia trachomatis serotypes (b, d, g, h, and l2) and of the c. psittaci meningopneumonitis strain were purified by preparatory sodium dodecyl sulfate-(sds)-polyacrylamide gel electrophoresis. the isolated sds-polypeptide complexes, which varied in their apparent subunit molecular weights, were used as immunogens to raise hyperimmune rabbit antisera. the specificities of these antisera were determined both by rocket immunoelectrophoresis wi ... | 1982 | 7068209 |
| association between resistance to superinfection and patterns of surface protein labeling in mouse fibroblasts (l cells) persistently infected with chlamydia psittaci. | when mouse fibroblasts (l cells) were persistently infected with chlamydia psittaci strain 6bc, they became immune to superinfection because they no longer associated with exogenous c. psittaci in a way that led to ingestion and intracellular multiplication. at the same time, the persistently infected l cells also exhibited changes in surface structure as revealed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and autoradiographic visualization of the surface-exposed plasma membran ... | 1982 | 7068218 |
| pulmonary lesions in sheep following experimental infection by ehrlichia phagocytophilia and chlamydia psittaci. | | 1982 | 7068951 |
| chlamydia infection in ducks: preliminary communication. | chlamydia psittaci was isolated from cloacal swab pools from ducks in processing plants, and from cloacal and conjunctival swab pools from ducks on farms, in a small proportion of the samples examined. these isolates were difficult to passage. this difficulty was partly overcome by the use of emetine as the cell growth inhibitor. the direct complement fixation (cf) test was modified for testing duck sera by using complement at the los dose of 1.5 units. by this method, positive titres were demon ... | 1982 | 7069695 |
| [epidemiologic study of chlamydia psittaci infections in mining environment of the north of france]. | | 1982 | 7072147 |
| effects of chloramphenicol and thiamphenicol on the outcome of chlamydia psittaci infection in chick embryo. | the effects of chloramphenicol (cap) and thiamphenicol (tap) on the outcome of chlamydia psittaci infection in chick embryos were compared. cap administered along with chlamydia reduced embryo mortality rates but showed no appreciable effects when its injection was delayed. on the contrary, tap caused a high rate of embryo survival in both experimental situations. statistical analysis of the results showed that differences in the survival rates following cap and tap administration are significan ... | 1982 | 7075324 |
| [pathomorphology of experimental ornithosis pneumonia]. | model experiments in white mice reproduced chronic ornithosis pneumonia morphological features of which included early outgrowth of connective tissue cells of the type of carnification, considerable accumulation of tropoglycogen, and disturbed process of collagen fibers formation at a minimal number of leukocytes. such foci occur in the lungs very early, before the onset of the clinical signs of the disease which appears to be a typical feature of ornithosis pneumonia and may explain causes and ... | 1982 | 7082198 |
| chlamydia psittaci infection in companion birds examined in florida. | over a two-year period, companion birds, submitted mostly by small-animal practitioners to the animal disease diagnostic laboratory, kissimmee, florida, were examined for chlamydia. chick embryo yolk sac and mouse brain inoculations were used for isolation. chlamydiae were isolated in 58 (20%) of 287 birds examined. although twice as many birds were examined in 1980 as in 1979, the percentage of positive isolations was 20% for each year. this suggests a constant level of chlamydial infection in ... | 1982 | 7092742 |
| surface projections of chlamydia psittaci elementary bodies as revealed by freeze-deep-etching. | the morphology of the surface projections of chlamydia psittaci elementary bodies in the intracytoplasmic inclusion was the same as that of the projections on the purified elementary bodies. each projection emerged from the center of a flower structure, which was composed of nine leaves arranged radially. | 1982 | 7096263 |
| attachment of cell walls of chlamydia psittaci to mouse fibroblasts (l cells). | (14)c-labeled cell walls of the 6bc strain of chlamydia psittaci, prepared from intrinsically labeled chlamydial cells by digestion with deoxycholate and trypsin, associated with mouse fibroblasts (l cells) in a manner comparable to that of intact c. psittaci. almost half of the host cell-associated cell walls were not dissociated by trypsin, suggesting that they had been attached and then ingested. the attachment of cell walls to l cells was inhibited by a number of treatments known to block as ... | 1982 | 7129628 |
| the incidence of chlamydia psittaci antibodies in patients with respiratory tract diseases. | | 1982 | 7129645 |
| lipid a in legionella pneumophila. | | 1982 | 7136354 |
| [method of control of vaccines against ovine abortive chlamydiosis using pregnant mice]. | | 1982 | 7137851 |
| isolation and characterization of phagosomes containing chlamydia psittaci from l cells. | the obligate intracellular procaryote chlamydia psittaci enters host cells by a mechanism similar to, but distinct from, conventional phagocytosis. to better understand chlamydial uptake, l-cell phagosomes containing a single chlamydial cell were isolated and studied. two rounds of dextran rate-zonal gradient centrifugation of l cells homogenized 1 h after infection with c. psittaci yielded phagosomes relatively free of other membranous structures. in double-label experiments, the phagosomes wer ... | 1982 | 7141694 |
| effect of estradiol on chlamydial genital infection of female guinea pigs. | female guinea pigs were treated daily with 1 mg of beta-estradiol-3-benzoate intramuscularly beginning 14 days before intravaginal inoculation with the chlamydial agent of guinea pig inclusion conjunctivitis and continuing during the course of the infection. treatment with estradiol was found to markedly influence the course of genital infection with the chlamydial agent of guinea pig inclusion conjunctivitis, producing infections of greater intensity and longer duration than those in control an ... | 1982 | 7141709 |
| psittacosis centenary -- 'pneumotyphus' reviewed. | since 1979, when psittacosis, human infection with chlamydia psittaci, became a notifiable disease in south africa, only 4 cases have been reported to the state health authorities. while this is not a common illness and some cases may not be reported, there is a strong possibility that this infection is being overlooked because of lack of awareness of its wide range of manifestations. a characteristic case is described and the complications and management of psittacosis are reviewed with particu ... | 1982 | 7147128 |
| structural analysis of chlamydial major outer membrane proteins. | the primary structure and surface exposure of the major outer membrane protein (momp) isolated from 14c intrinsically or 125i extrinsically radiolabeled chlamydia trachomatis serotypes d/uw-3, g/uw-57, h/uw-4, i/uw-12, and l2/434 and the chlamydia psittaci meningopneumonitis strain were analyzed by two different peptide-mapping techniques. radiolabeled proteins were digested with either staphylococcus aureus v8 protease, the patterns of peptide fragments produced being displayed by sodium dodecy ... | 1982 | 7152681 |
| ultrastructural studies of chlamydial infection in guinea-pig urogenital tract. | | 1982 | 7153378 |
| spontaneous and experimental infections of xenopus laevis with chlamydia psittaci. | chlamydial infection was suspected when widespread pyogranulomatous inflammation and large basophilic intracytoplasmic inclusion bodies were evident histopathologically in african clawed frogs (xenopus laevis) dying of a spontaneous disease of high morbidity and mortality. organism morphology was determined by electron microscopy of infected hepatic sinusoidal lining cells, and it was characteristic of the unique developmental cycle of a chlamydial agent. isolation and speciation of the organism ... | 1982 | 7162133 |
| efficacy of a bacterin prepared from chlamydia psittaci grown in cell culture for experimental immunization of ewes. | the efficacy of a bacterin prepared from chlamydia psittaci grown in mouse l-cells was compared to a similar bacterin prepared from c. psittaci grown in chicken embryos (ce). both bacterins significantly reduced (p less than 0.03) incidence of abortion and weak lambs compared to non-vaccinated control ewes. the l-cell bacterin elicited a greater antibody response than the ce bacterin (p less than 0.03). | 1982 | 7164341 |
| chlamydial genital infection in ibadan, nigeria. a seroepidemiological survey. | sera from patients attending a sexually transmitted diseases (std) clinic, a family planning clinic, and an antenatal clinic in ibadan, nigeria, as well as from male blood donors from the same area were tested for the presence of type specific antichlamydial antibodies using a modified micro-immunofluorescence test. among men and women attending the std clinic the exposure rates to chlamydia trachomatis serotypes d to k (genital pathogens) were 18.7% and 26.7% respectively. antibody titres sugge ... | 1982 | 7171978 |
| chlamydial genital infection in addis ababa, ethiopia. a seroepidemiological survey. | a seroepidemiological survey was undertaken in addis ababa to assess the prevalence of chlamydial genital infections among patients attending a sexually transmitted diseases (std) clinic and patients with no overt genital symptoms. in the std clinic patients antibodies to chlamydia trachomatis serotypes d to k (genital types) were detected in 68 of 210 (32.4%) men and in 72 of 159 (45.3%) women, a rate of exposure as high or higher than that found in europe. serological evidence of active chlamy ... | 1982 | 7171979 |
| [mechanism of the negative action of a bacterial lipopolysaccharide (pyrogenal) on the course of experimental ornithosis infection]. | the intravenous injection of pyrogenal into mice following their intravenous infection aggravates the course of ornithosis infection and leads to more intensive multiplication of the infective agent. after the injection of pyrogenal is discontinued a change in the course of the infectious process occurs and the infective agent is quickly eliminated from the body. this is accompanied by increased formation of specific antibodies. the negative effect of pyrogenal is due to its high toxicity for ma ... | 1982 | 7180253 |
| infectivity of chlamydia psittaci of bovine and ovine origins for cultured cells. | the infectivity of 2 strains of chlamydia psittaci of mammalian origin were studied in mouse l cells. infectivity was enhanced by centrifuging the chlamydial inoculum onto the cell monolayer. infectivity increased as force of centrifugation increased. the enhanced infectivity was not caused by centrifugal sedimentation of chlamydiae, since centrifugation longer than 10 minutes and an inoculum dose larger than 0.4 ml did not further enhance infectivity. centrifuge-enhanced adsorption was temperat ... | 1982 | 7181187 |
| serological differentiation of legionnaires' disease and mycoplasma pneumoniae and chlamydia psittaci pneumonia. | | 1981 | 7185948 |
| [chlamydiosis in ruminants and the possibility of human contamination]. | | 1982 | 7187963 |
| identification of a major envelope protein in chlamydia spp. | a major cell envelope protein of chlamydia psittaci with a molecular weight of approximately 43,000 was identified and partially characterized. it was present at all stages of the c. psittaci developmental cycle. a major protein with a similar molecular weight was also observed in two chlamydia trachomatis strains. | 1981 | 7217005 |
| chlamydial hemagglutinin: interaction of ether-ethanol extracted fraction with sensitive erythrocytes. | chlamydial particles and soluble hemagglutinin were separated by differential centrifugation from the supernatant of l-cells and the allantoic fluid of chick embryo infected with c. psittaci 6bc and c. trachomatis tw-3. concentrated hemagglutinin was fractionated with ether-ethanol; specimens were compared using sensitive erythrocytes of adult white leghorn chickens. the ether-ethanol extract had a 40- to 80-fold higher hemagglutinin titer than the crude hemagglutinin or the ether-ethanol insolu ... | 1981 | 7223135 |
| inapparent chlamydial infection in the urogenital tract of guinea-pigs. | microbiologically inapparent urogenital infection appeared to be induced in male guinea-pigs inoculated intra-urethrally with low doses of the guinea-pig inclusion conjunctivitis strain (gp-ic) of chlamydia psittaci. this state was indicated by the ability of inoculated animals to donate eye infection to normal animals caged with them. donors failed to develop overt urogenital infection throughout the period of transmission judged by both absence of infected cells in urethral scrapings and failu ... | 1980 | 7229613 |
| [legionnaires' disease. first observations in catalonia (author's transl)]. | the authors report the first two cases of legionnaires' disease from catalonia. both patients were chronic bronchitic males, and the cases were sporadic. the onset of the disease was characterized by a febrile illness with muscle and joint pains, respiratory symptoms (cough and mucous sputum production), and mental changes. there were no digestive complaints. pulmonary consolidation occurred in both patients in the left upper lobe. blood chemistries disclosed the existence of an absolute lymphop ... | 1981 | 7253729 |
| [chlamydia psittaci infections (psittacosis)]. | | 1981 | 7253739 |
| chlamydial diseases. | | 1981 | 7254196 |
| serological observations on chlamydia psittaci infection in finnish dairy herds. | | 1981 | 7258022 |
| bovine mastitis induced by a common intestinal chlamydia psittaci strain. a pathogenetic and serological investigation. | | 1981 | 7258034 |
| ocular and dermal delayed hypersensitivity reactions in guinea-pigs following infection with guinea-pig inclusion conjunctivitis agent (chlamydia psittaci). | guinea-pigs which had been sensitized to guinea-pig inclusion conjunctivitis agent by ocular infection, were given ocular and dermal challenges with a range of doses of agent. ocular delayed-type hypersensitivity responses were elicited by a wide range of doses. such responses were associated with the presence of chlamydial inclusions and inflammatory cells. the eid50 for ocular reinfection was only slightly higher than that for primary ocular infection. dermal delayed-type hypersensitivity reac ... | 1981 | 7261478 |
| bovine lameness due to suspected chlamydial infection. | | 1981 | 7266457 |
| [inapparent persistent chlamydial infection in mccoy cells]. | we have studied the phenomena of inapparent chlamydial infections in vitro using mccoy cells in culture as hosts and low doses of chlamydia psittaci (gp-ic) as infecting agents. the results indicate that gp-ic can persist undetected at least 220 hrs in mccoy cells previously inoculated with 0.2 ml of a gp-ic preparation containing 30 ifu/ml, using the centrifuge-assisted inoculation technique. these cells were maintained in complete mem medium supplemented with 2% v/v of foetal bovin serum (fbs) ... | 1981 | 7280303 |