| genetic subgrouping of stroke-prone shr and stroke-resistant shr. | from these results, we can conclude that the developmental pattern of hypertension in the young age is genetically determined and closely related to the incidence of hemorrhage or infarction. these newly selected substrains of shrsp with higher incidences of cerebral infarction (sp-2) or hemorrhage (sp-1) are regarded as the better models for studying the pathogenesis, treatment, and prevention of infarction or hemorrhage, respectively. | 1978 | 731896 |
| blood pressure in stroke-prone shr (shrsp) exposed to unusual environmental temperature. | 1) it is generally accepted that the adequate environmental temperature to rear rats is about 23 degrees c, but the adequate temperature that directly contacts to the animal's skin seems to be about 30 degrees c. 2) the blood pressure increased on cold exposure or stimulation. there was a case that the blood pressure increased slightly on hot exposure. this suggests that it is necessary to pay close attention to the condition of warming-up at the indirect measurement of blood pressure. 3) apople ... | 1978 | 731903 |
| crude substance p from brain contains a cholecystokinin-like peptide. | the subfractions fa, fb, and fc of crude substance p (sp) preparations made from human and bovine brains were analysed for sp and the cooh-terminal octapeptide of cholecystokinin (cck-8). the methods were specific radioimmunoassays (rias) for sp and cck-8, and bioassays on isolated organs of the guinea pig: the ileum, the gallbladder and the field-stimulated vas deferens. 1. in bioassays of synthetic peptides the vas deferens reacted specifically to sp and the gallbladder to cck-8. 2. rias and ... | 1978 | 732896 |
| pharmacological analysis of the effects of substituted benzamides on the isolated guinea-pig ileum. study of metoclopramide, sulpiride, bromopride, tiapride and sultopride. | the effects of metoclopramide (mcp), sulpiride (sp) and some of their derivatives: bromopride (br), tiapride (ti) and sultopride (stp) have been compared on the guinea-pig isolated ileum. 1. br and ti have, like mcp, and indirect cholinergic stimulating effect on the intestinal smooth muscle. sp and stp are devoid of such an effect. 2. at high doses, all the benzamides have a direct inhibitory effect on the ileum. 3. mcp, br and ti (10(-5)m) potentiate the responses of the ileum to acetylcholine ... | 1978 | 736692 |
| [identification of diphyllobothrium sp. in salmonid species from rupanco lake, chile (author's transl)]. | | 1978 | 737034 |
| [isolation of bacterial luminescence reaction inhibitor from photobacterium sp. cells]. | the factor having a strong inhibitory effect on bacterial luminescence was isolated from the luminous bacteria species photobacterium sp. the inhibitor purified by gel filtration on the biogel and by deae chromatography was homogenous (single bound during electrophoresis in polyacrylamide gel), it reacted with coomassie brilliant blue and gave a positive lowry reaction on protein. molecular weight was about 30,000 as determined by sds-polyacrylamide gel electrophoresis. the absorption spectrum w ... | 1978 | 737225 |
| substance p and opioid interaction on stimulated and non-stimulated guinea pig ileum. | in the past, substance p (sp) has been suggested to be both an opiate agonist and an antagonist. it therfore seemed appropriate to examine potential interactions of sp and opioids on guinea pig ileum. on non-stimulated ileal strips sp caused a dose responsive increase in contraction. pretreatment of the tissue with morphine (3, 30, 300, 3000 nm), enkephalin (1.42, 14.2, 142, 1420 nm), naloxone (5nm), or atropine (0.144 micron) did not significantly alter the spasmogenic effect of sp. on stimulat ... | 1978 | 738356 |
| pulmonary aspergilloma in a rat. | small grayish white nodules were observed in the lungs of a young female rat. microscopically, the pulmonary nodules were composed of granulomatous tissue and septate branching mycelia. the organism was identified as aspergillus sp by direct fluorescent antibody technique. | 1978 | 738945 |
| production of a novel red pigment, rubrolone, by streptomyces echinoruber sp. nov. i. taxonomy, fermentation and partial purification. | a taxonomic study of streptomyces x-14077 (nrrl 8144), which produces a water-soluble purple-red pigment complex, revealed it to be a new species which has been named streptomyces echinoruber sp. nov. the pigment complex was produced in deep culture fermentation and isolated by solvent extraction and concentration. the major pigment component, rubrolone, has low toxicity and may have potential as a food coloring agent. it appears to be devoid of antibiotic activity. | 1978 | 738965 |
| production of a novel red pigment, rubrolone, by streptomyces echinoruber sp. nov. ii. chemistry and structure elucidation. | streptomyces echinoruber sp. nov. produces several red pigments. the major component, rubrolone, has been identified as 8(r),9(r),10(s),10a(r)-tetrahydro-9,10,10a,11-tetrahydroxy-3,8-dimethyl-1-propyl-6ah(s)-pyrano[2",3":5',4]furo[2',3':5,6]azuleno[2,3-c]pyridine-5,13-dione (1) by single crystal x-ray analysis of a suitable derivative. a second pigment, b, is probably structurally closely related. | 1978 | 738966 |
| isospora neorivolta sp. n. from the domestic dog. | the endogenous development of canine isospora rivolta (mahrt, j protozool 14: 754--759, 1967) was compared with the development of i. ohioensis (dubey, parasitology, 1978, in press) in intestines of dogs. a new name, isospora neorivolta, is proposed for the canine i. rivolta because of developmental differences from i. ohioensis. the major difference between these 2 coccidia is their site of development. isospora neorivolta develops predominantly in the lamina propria of the posterior half of th ... | 1978 | 739301 |
| [application of sp-sephadex chromatography to the purification of staphylococcal enterotoxins a, b and c2 (author's transl)]. | | 1978 | 739593 |
| characterization of temperature-sensitive mutants of bacteriophage pm2: membrane mutants. | in an effort to understand the genetic regulation of membrane morphogenesis, twenty-nine temperature-sensitive mutants of the membrane-containing bacteriophage pm2 were isolated. characterization at restrictive temperature revealed groups showing no lysis (groups i--iv), partial lysis (groups v--viii), and full lysis (groups ix--xii) of the host pseudomonas bal-31. when the cell lysis data are considered in conjunction with data on stimulation of viral dna synthesis, at least six mutant groups a ... | 1978 | 739979 |
| haematopinus sp found on indian goats. | | 1978 | 741603 |
| [life cycle of paramphistomum togolense n. sp. (trematoda, paramphistomidae)]. | mature worms were obtained from a sheep experimentally infested with metacercariae issued from cercariae emitted by naturally infested snails: bulinus (bulinus) forskalli collected near lomé (togo). miracidia were used for infection of these laboratory-reared snails which gave numerous cercariae. larval stages are studied. morphological and histological characters of the adult and the very peculiar shape of the sporocyst distinguish this trematode from the other known species of the genus. the s ... | 1978 | 742803 |
| hematological, splenic and adrenal changes associated with natural and experimental infections of trypanosoma lemmi in the norwegian lemming, lemmus lemmus (l.). | both natural and experimental trypanosoma lemmi infections in norwegian lemmings caused slight anemias and hypoglycemia. leucocyte counts remained the same. adrenal and splenic hypertrophy were associated with natural infections whereas only splenic hypertrophy was present in the experimental infection. grahamella sp. infections were also associated with adrenal and splenic hypertrophy in wild lemmings. it is suggested that blood parasites which are associated with anemia, hypoglycemia and adren ... | 1978 | 744544 |
| role of opportunistic fungi in ocular infections in nigeria. | the importance of opportunistic fungal pathogens in causing ocular infections is emphasized. a study was conducted over a period of 4 years (1974--1977) to investigate the role of opportunistic fungi in causing mycotic keratitis and to elucidate certain aspects of epidemiology of this disease in nigeria. fifty-nine cases of corneal ulcers of suspected mycotic etiology were investigated. fungal etiology was confirmed in 42 of these cases. the predominant etiological agent was fusarium solani in 1 ... | 1978 | 745623 |
| the inhibitory effect induced by delta9-tetrahydrocannabinol on the contractions of the isolated rat vas deferens. | to analyse the influence of delta9-tetrahydrocannabinol (thc) on the effects induced by sympathomimetic, parasympathomimetic and direct spasmogenic drugs, the isolated rat vas deferens preparation was chosen. instead of the usual emulsifying agents, we have used 1% ethanol (et-oh) to keep the cannabinoids in homogeneous dispersion in the bath. thc exerted a non-competitive inhibition of noradrenaline and of acetylcholine responses but no synergistic action nor competitive antagonism was seen on ... | 1978 | 747459 |
| effect of starvation on survival of three bacterial isolates from an arctic soil. | three isolates, a pseudomonas sp., a bacillus sp. and an arthrobacter sp., which had been isolated from a meadow soil at devon island, canada, were subjected to starvation under varying conditions. the viabilities of the three isolates during starvation for 30 days in a carbon-free medium was assessed after the organisms had been grown continuously at varying rates in carbon- and nitrogen-limited media at 5 and 15 degrees c. pseudomonas m216 was the most resistant to starvation stress, bacillus ... | 1978 | 747809 |
| effect of freezing and thawing on survival of three bacterial isolates from an arctic soil. | three isolates, a pseudomonas sp., bacillus sp., and arthrobacter sp., which had been isolated from a meadow soil at devon island, canada, were subjected to freezing and thawing at low rates under various conditions. when cells were frozen in sand or soil, survival was dependent on moisture level, storage time, and thaw rate. pseudomonas m216 was most susceptible to freeze-thaw damage under these conditions. arthrobacter m51 was the most resistant of the three isolates when frozen in sand or soi ... | 1978 | 747810 |
| identification of erwinia sp., causing stalk rot of maize in egypt. | the physiological characteristics, pathogenic propensities, and the sensitivity towards certain antibiotics of the causal bacterium of stalk rot of maize, isolated in egypt, were studied. different isolates of erwinia carotovora and e. atroseptica were included for comparative studies. the antibiotic sensitivity tests (including erythromycin) are of no value in differentiating between e. carotovora and e. atroseptica. the cultures of the causal bacterium of stalk rot of maize showed physiologica ... | 1978 | 749412 |
| experimental and natural infections of eustrongylides sp. (nematoda: dioctophymatidae) in waterfowl and shore birds. | the occurrence of eustrongylides sp. is reported for five species of fish-eating birds collected in the western-basin region of lake erie. mature specimens of e. tubifex were recovered from 5 of 74 laboratory-reared mallards (anas platyrhynchos) infected experimentally with larval worms taken from yellow perch, perca flavescens. | 1978 | 749896 |
| renal coccidiosis caused by eimeria gaviae n. sp. in a common loon (gavia immer). | renal coccidiosis was diagnosed in a common loon (gavia immer). this is the first report of coccidium from the kidney of a member of the order gaviiformes. morphologically, the coccidium was considered to be an eimeria sp. distinct from eimeria truncata, and was named eimeria gaviae n. sp. | 1978 | 749899 |
| three new species of penicillium. | three new species of microfungi belonging to the genus penicillium link ex fries are described and illustrated. all but one have been isolated from the atmosphere of las palmas, capital city of the island of gran canaria (canary islands, spain). they clearly differ from all species of the genus described so far and are, therefore, described and proposed as new species: penicillium hispanicum sp. nov., penicillium grancanariae sp. nov., and penicillium palmensis sp. nov. | 1978 | 750938 |
| [results of the tuberculin test performed 3 months after vaccination, through by intradermal bcg, of persons of various ages residing in são paulo, sp (brazil)]. | | 1978 | 752919 |
| metabolism of nicotinic acid by sarcina sp. | | 1978 | 753746 |
| [study of the larval stages of monogenea of fishes (author's transl)]. | the ciliate cells and the oncomiracidial chetotaxy of the following species are described: among the polyopisthocotylea : gastrocotyle trachurii van bneden and hesse, 1863, gastrocotylidae, parasite of trachurus trachurus (l.); cyclocotyla bellones (otto, 1821), diclidophoradae, living on the cymothoides isopods of sparidae : boops boops (l.) and spicara maena (l.) ; mazocraes sp., mazocraeidae, parasite of sardinella maderensis (lowe, 1841). among the monopisthocotylea : ligophorus vanbenedeni ... | 1978 | 754614 |
| [changes in the electrophoretic proteinogram of calves with experimental helminthiasis]. | ten cross-bred calves (holstein x zebu) were infected with helmintics larvae. three female calves had 4 to 5 months and 7 male calves, 4 to 7 months of age. of the larvae given to them, 1720 were cooperia sp., 1560 oesophagostomum sp. and 720 were haemonchus sp. this experiment was projected to study the changes in serum proteins, namely the total one and particulary its fractions: albumin and the alpha 1, alpha 2, beta and gamma globulins. before infection and after it 54 days, with 6 day inter ... | 1978 | 754671 |
| [mycoplasma sp. isolated from lung tissue of calves with pneumonia]. | | 1978 | 754674 |
| lipid body content and persistence of chlamydospores of fusarium solani in soil. | chlamydospores of fusarium solani f. sp. pisi. low or high in lipid content, were produced in soil from "low and high reserve" macroconidia, respectively. the development of "low and high reserve" populations of macroconidia and chlamydospores in soil was studied. the rate of conversion of macroconidia into chlamydospores is influenced by the lipid content of the macroconidia. the long-term persistence of chlamydospores in soil seems to be independent of the lipid content of the chlamydospore ce ... | 1978 | 754878 |
| pyruvate formation as a test for the induction of some enzymes in mycobacterium sp. 279. | | 1978 | 757944 |
| haemaphysalis (rhipistoma) eupleres (ixodoidea: ixodidae), a parasite of the madagascar falanouc (mongoose): new data and male identity. | haemaphysalis (rhipistoma) eupleres hoogstraal, kohls and trapido 1965, was described and partially illustrated from a single damaged female from the falanouc, or small-toothed mongoose, eupleres sp., from an unstated locality in madagascar. data are here presented for two collections (9 males, 17 females) from two localities in tamatave province, one from e. goudotii doyère, the other from an unstated host. the male is described and illustrated; a complete female is illustrated. | 1977 | 758015 |
| bacteriology of chronic otitis media. | tympanocentesis was performed in 50 patients with chronic otitis media; pus was cultured aerobically and anaerobically. only aerobes were isolated from 21 patients (42%), three patients had only anaerobes (peptococcus sp), and 25 patients (50%) had both aerobes and anaerobes. only one specimen had no growth. there were 68 aerobic isolates. pseudomonas aeruginosa was recovered in 36 patients (72%); other aerobes commonly recovered included proteus sp and staphylococcus aureus. there were 48 anaer ... | 1979 | 759663 |
| cochlear electrical activity in the c57bl/6 laboratory mouse: volume-conducted vertex and round window responses. | remote (vertex-positive, volume-conducted) and local (round window, or rw) responses were simultaneously recorded from the c57bl/6 mouse. volume-conducted responses were obtained which corresponded to the cochlear microphonic (cm), summating potential (sp), and action potential (ap), as measured at the rw. the vertex pi, corresponding to the ap, had a shorter latency to rarefaction than to condensation clicks. at higher spl's bimodal pi peaks (a and b) were observed. pib amplitudes were greater ... | 1979 | 760378 |
| dermal myiasis caused by the rabbit botfly (cuterebra sp). | | 1979 | 760642 |
| starvation-induced changes in secretin-like immunoreactivity of human plasma. | levels of secretin-like immunoreactivity in the plasma of 50 starved subjects were measured by radioimmunoassay and rose from 18 +/- 3 (s.e.) pg/ml after 12 h, to 103 +/- 12 pg/ml (p less than 0.005) after 36 h. the assay antibodies were found to be specific for a region of secretin located towards the c-terminal residue. lactoperoxidase was used to label the secretin with 125i and ionexchange chromatography on sp-sephadex c-25 was used to purify the labelled product. the plasma immunoreactivity ... | 1979 | 760828 |
| meso-alpha,epsilon-diaminopimelate d-dehydrogenase: distribution and the reaction product. | a high activity of meso-alpha-epsilon-diaminopimelate dehydrogenase was found in extracts of bacillus sphaericus, brevibacterium sp., corynebacterium glutamicum, and proteus vulgaris among bacteria tested. b. sphaericus ifo 3525, in which the enzyme is most abundant, was chosen to study the enzyme reaction. the enzyme was not induced by the addition of meso-alpha-epsilon-diaminopimelate to the growth medium. the reaction product was isolated and identified as alpha-amino-epsilon-ketopimelate by ... | 1979 | 762012 |
| genetic mapping of a bacteriophage resistance mutation, pha-1, and the thi-1 mutation in bacillus licheniformis. | a mutation, designated pha-1, resulting in resistance to bacteriophage lp-52, mapped between gly-3 and pepa1 in bacillus licheniformis by transduction with phage sp-15. the thi-1 mutation was also found to be linked to gly-3. the map order was thi-1--gly-3--pha-1--pepa1--his-9. | 1979 | 762026 |
| tobramycin in chronic recurrent urinary tract infections. | a total of 32 adult patients of both sexes with chronic recurring urinary tract infections were treated with tobramycin in a daily dose of 1.2 mg/kg of body weight. they were randomly allocated to receive the drug at 8 or 12 hour intervals by intramuscular injection. the overall immediate disappearance of bacteriuria after therapy was 78.1 per cent; 15 days later, the cure rate dropped to 60 per cent. there was no difference between the two schedules tested. tolerance to tobramycin was excellent ... | 1976 | 769550 |
| [isolation of new species of the genus actinomadura on selective media with rubomycin]. | in the screening programme of organisms producing new antibiotics on selective media with rubomycin (5, 10, 20 gamma/ml) 4 unusual actinomyceteus cultures forming short, straight, hook-like and monospiral spore chains on the aerial mycelium were isolated. the study of the composition of the cell walls showed that they contained meso-diaminopimelic acid and madurose, a differentiating sugar. on the basis of the morphological structure and composition of the cell walls the isolates were classified ... | 1975 | 773288 |
| bacterial glutaminase in treatment of acute leukaemia. | a glutaminase-asparaginase enzyme from achromobacter sp has antitumour activity in vitro and in animals. glutaminase was administered in doses of 3500-20 000 iu/m2 body surface area/day to six patients with acute lymphoblastic leukaemia (all) and three patients with acute myeloid leukaemia (aml). the enzyme had a blood half life of 80 minutes but depletion of blood glutamine persisted for 12 hours after single doses. seven patients, including four (two with aml and two with all) resistant to asp ... | 1976 | 773514 |
| bacterial mastitis in guinea pigs. | necropsy of 37 guinea pigs revealed mastitis to be the primary cause of death in 70% of these animals. epidemiologic study failed to establish correlation between age, parity, or litter size and the onset of mastitis. the disease did not appear to be contagious. although mastitis frequently developed during lactation, survivability of offspring was unaffected. the agent most consistently isolated from affected mammary glands was escherichia coli (17 of 37). other isolates in decreasing order of ... | 1976 | 775191 |
| [helminths of birds and mammals from israel. vi. the taxonomy and ecology of trichostrongylid nematodes (author's transl)]. | thirteen species of trichostronglyloid nematodes have so far been recorded from wild birds and mammals in israel and surrounding territories. three species were found in birds: amidostomum fulicae (rudolphi, 1819) in fulica atra l., 1758, a. acutum (lundahl, 1848) in anas crecca l., 1758 and amidostomum sp. in ceryle rudis l., 1758. ten species, 3 of which are new, were found in small mammals: trichostrongylus colubriformis (giles, 1892) in hystrix indica kerr, 1792; tenorastrongylus josephi n. ... | 1975 | 776059 |
| prodiginine (prodigiosin-like) pigments from streptomyces and other aerobic actinomycetes. | about 95 microorganisms, mainly streptomycetes, were examined for prodiginine pigments. the test methods, including some media for stimulating pigment production, are given. all nine strains which produced prodiginine pigments were characterized and the pigments identified. the results were used to propose structures for five prodigiosin-like pigments from actinomycetes reported in the literature between 1947 and 1964. streptoverticillium sp. 26-1 furnished good yields of butylcycloheptylprodigi ... | 1976 | 776374 |
| ecori restriction endonuclease map of the composite r plasmid nr1. | a physical map of the composite r plasmid nr1 has been constructed using specific cleavage of deoxyribonucleic acid (dna) by the restriction endonuclease ecor-. digestion of composite nr1 dna by ecori yields thirteen fragments. the six largest fragments (designated a to f) are from the resistance transfer factor component that harbors the tetracycline resistance genes (rtf-tc). the seven smallest fragments (designated g to m) are from the r-determinants component that harbors the chloramphenicol ... | 1976 | 776943 |
| influence of certain indigenous gastrointestinal microorganisms on duodenal alkaline phosphatase in mice. | alkaline phosphatase activity was assayed in duodenal homogenates or extracts from adult specific pathogen-free (spf) and germfree mice and gnotobiotic mice monoassociated with a lactobacillus sp., a bacteroides sp., or a coliform strain indigenous to spf mice. activity levels of the enzyme were much higher in the preparations from germfree mice than in those from the spf controls. in the gnotobiotes monoassociated either with a freshly isolated lactobacillus sp. or a bacteroides sp., the levels ... | 1976 | 779647 |
| leptospiral antibodies in wild living animals from north tyrol. | the authors examined serologically 623 wild living animals (22 species) from north tyrol for the incidence of leptospirosis. positive reactions (mal) in the titre 1: 100 and more were found in 4.5% of the animals examined; the serotypes concerned were these: icterohaemorrhagiae, sorex-jalna, castellonis or arboreae, grippotyphosa, bratislava, pomona, sejroe, saxkoebing. positive reactions were obtained with the sera of sorex araneus, erinaceus europaeus, putorius putorius, vulpes vulpes, cervus ... | 1976 | 780229 |
| a modified plate holding system for anaerobic cultures. | a modified plate holding system for anaerobes has been developed which: 1) effectively reduces the volume of oxygen-free gas required, 2) promotes earlier bacterial growth, and 3) monitors the anaerobic atmosphere of the holding vessel and the rate of gas flow. cultures of bacteroides fragilis, clostridium perfringens, c. septicum, fusobacterium nucleatum, peptococcus sp. and propionibacterium sp. were evaluated for optimal growth. all cultures grew as well as or better when preincubated in the ... | 1976 | 782243 |
| use of the hungate anaerobic technique in the isolation of phloroglucinol-negative mutants of coprococcus species. | the hungate anaerobic technique was used with a standard procedure for bacterial mutagenesis employing n-methyl-n-nitro-n'-nitrosoguanidine to obtain mutants of an obligate anaerobe. three mutant strains were derived from a coprococcus sp., strain pe15, a rumen anaerobe capable of growing on phloroglucinol. the mutants did not grow on phloroglucinol but did degrade the compound in anaerobic washed-cell suspensions, producing the same end products in approximately the same proportions as the wild ... | 1976 | 782358 |
| dna restriction and modification systems in salmonella. sq, a new system derived by recombination between the sb system of salmonella typhimurium and the sp system of salmonella potsdam. | as the result of p1-mediated cotransduction with serb from salmonella potsdam to the escherichia coli/salmonella typhimurium hybird 4617, one recombinant, l4004, was isolated which had a restriction-modification (r--m) system different from the sb and sp systems of its parents, and was designated sq. the genes of sq were allelic to those of the sb system of s. typhimurium and were shown by complementation experiments to be functionally related to those of the k system of e. coli. evidence that t ... | 1976 | 784901 |
| examination of pharyngeal secretions to determine the etiology of pharyngitis. | wright-stained throat smears from 174 outpatients with a chief complaint of sore throat were examined. in the presence of tonsillar and/or pharyngeal exudate, cervical lymphadenitis, temperature greater than or equal to 24 less than or equal to 72h, examination of the throat smears would have doubled the accuracy of differentiating streptococcal pharyngitis (sp) from nonstreptococcal pharyngitis (nsp). in the presence of one, two, three, or all four of the preceding presenting characteristics, e ... | 1976 | 786018 |
| parasitic infections in humans in west kalimantan (borneo), indonesia. | a survey was carried out among inhabitants of eight villages in west kalimantan province (borneo), whereby blood smears were examined for malaria, stools examined for intestinal parasites and sera tested by the indirect hemagglutination test for antibodies to entamoeba histolytica and toxoplasma gondii. the prevalence of malaria among 3017 people examined was 5.6% (plasmodium vivax 2.8%, plasmodium falciparum 2.8%). brugia malayi microfilariae were found in 3.6% and wuchereria bancrofti in 0.3%. ... | 1976 | 788263 |
| physiological and morphological characters in two pyrimethamine-resistant lines of plasmodium berghei sp11 after cryopreservation. | the authors describe the characters in two pyrimethamine-resistant lines of plasmodium berghei berghei sp 11-rr after long storage at very low temperatures. in one case the line had maintained its original virulence but lost its resistance to pyrimethamine. gametocytogenesis increased and cyclical transmission was successful. furthermore, parasites crossed the blood-brain barrier and provoked cerebral malaria. in the other case no physiological changes could be detected. the authors conclude tha ... | 1976 | 790672 |
| susceptibility of acinetobacter calcoaceticus var. anitratus (herellea vaginicola) to minocycline. | the in vitro activity of minocycline against acinetobacter calcoaceticus var. anitratus (herellea vaginicola) was examined. all strains of a. anitratus were inhibited by minocycline at concentrations of 0.4 mug/ml or less. the strains studied were considerably more susceptible to minocycline than tetracycline. no difference between the susceptibility to minocycline and tetracycline was seen with escherichia coli, klebsiella pneumoniae, enterobacter and proteus sp. a regression line of the log mi ... | 1976 | 791084 |
| mycotic keratitis in nigeria. a study of 21 cases. | a clinical and mycological study of 21 cases of mycotic keratitis, a clinical entity not yet reported from nigeria or west africa, showed that fusarium solani was the predominant aetiological agent. it was isolated from 12 cases. four of the remaining nine cases were caused by aspergillus fumigatus, one by a. flavus, two by penicillium citrinum, and one each by p. expansum and penicillium sp. all the 12 isolates of f. solani grew well at 37 degrees c and survived at 40 degrees c. two cases, one ... | 1976 | 791355 |
| mycotic flora in tonsils and adenoids. a microbiological and histological evaluation. | the tonsils of 147 patients with chronic tonsillitis and the adenoids of 134 children with recurrent respiratory infections were cultured for fungal organisms and studied microscopically. a control group consisted of 68 healthy persons. positive cultures were obtained in 64% of patients with chronic tonsillitis, in 21% of children treated with adenoidectomy, and in 69% of the control group. candida albicans, saccharomyces sp. and aspergillus were the most common organisms. the histological inves ... | 1976 | 792373 |
| a rapid glutamic decarboxylase test for identification of bacteria. | a simple rapid glutamic decarboxylase test is described. this test was found useful in the identification of escherichia coli, shigella sp., providencia alcalifaciens, clostridium perfringens and bacteroides fragilis. | 1976 | 793504 |
| starvation effects on escherichia coli and aquatic bacterial responses to nutrient addition and secondary warming stresses. | a gram-negative polar flagellated rod, isolated from a colorado mountain stream and considered to be an aeromonas sp., a mixed aquatic microbial population, and a culture of escherichia coli were starved to determine their responses to the short-term presence of nutrients and mild warming stress (49.5 c for 2 min) in relation to starvation time. at the beginning of the starvation period, the aeromonas isolate was extremely sensitive to the secondary warming stress. this response was markedly dim ... | 1976 | 793521 |
| simplified scheme for identification of prompt lactose-fermenting members of the enterobacteriaceae. | a brief, simplified scheme involving the spot indole test and colonial morphology was evaluated for genus level identification of prompt lactose-fermenting (plf) members of the enterobacteriaceae. one hundred and ninety-four consecutive, clinically important plf gram-negative rods isolated in a clinical microbiology laboratory were identified by this simplified scheme, as well as by standard biochemical tests, and the api 20e (analytab products, inc., plainview, n.y.) system. in the simplified s ... | 1976 | 794078 |
| activation of the alternative (properdin) pathway of complement by candida albicans and related species. | accumulations of neutrophilic granulocytes within the epidermis and beneath the stratum corneum of the skin are a prominent histologic feature of experimental and clinical candidiasis. the mechanism of cell accumulation was studied by standard chemotactic methods. suspensions of viable or heat-killed candida sp caused marked chemotaxis of human neutrophils in fresh serum. culture supernatants of candida sp were not chemotactic. chemotaxis was dependent upon fresh serum, and could be abolished by ... | 1976 | 794419 |
| metabolism of nitrophenols by bacteria isolated from parathion-amended flooded soil. | two bacterial isolates from parathion-amended flooded soil, pseudomonas sp. and bacillus sp., were examined for their ability to decompose nitrophenols. uniformly labelled 14c-p-nitrophenol was metabolized by both bacteria, 14co2 and nitrite being end products. a substantial portion (23% for pseudomonas sp. and 80% for bacillus sp.) of radioactivity applied as p-nitrophenol was accounted for as 14co2 at the end of a 72-h period; 8 to 16% remained in the water phase after solvent extraction. pseu ... | 1976 | 797317 |
| [the possibility of an etiopathogenetic role of the fungi isolated from the respiratory tract (author's transl)]. | the large number of fungous strains isolated from specimens coming from the respiratory tract is a possible source of diagnostic failures. for an accurate diagnosis it is necessary to screen between fungi in a saprophitic and in a parasitic position. this is very difficult both for fungi, which are largely spread in the environment, like aspergillus sp., and for fungi, which are commonly found on the mucous membranes, like candida or torulopsis sp. the actual pathogenetic activity of a fungous s ... | 1976 | 797323 |
| the identification of staphylococci in clinical and food microbiology laboratories. | a comprehensive review of the methods which have been utilized for the identification of staphylococci is presented. biochemical characteristics which have assisted in the primary isolation of staphylococci, such as pigmentation, hemolytic activity, the egg yolk phenomenon, and deoxyribonuclease and coagulase production, are also analyzed. the potential applicability of advanced techniques to identify staphylococci, such as the detection of enterotoxin production, base ratio analysis, cell wall ... | 1976 | 797525 |
| effect of dietary oxytetracycline on microorganisms in turkey feces. | thirty-six two-day old male turkey poults were divided into three groups and fed three levels of oxytetracycline; 0, 110 or 440 mg. per kg. of ration, respectively, for nine weeks. the poults were given an oral spectinomycin plus vitamin treatment at the hatchery but were not fed before the start of the experiment. defecated feces from each group were sampled at weekly intervals and analyzed for bacteriological content, especially for members of the enterobacteriaceae. total aerobic counts of 3 ... | 1976 | 798178 |
| [regulation of growth and lysine-synthesizing activity of the lysine producer, brevibacterium sp 22 l., by the intensity of stirring of the medium]. | the intensity of medium stirring at a constant po2 influenced the specific rate of brevibacterium sp. 22 l growth and lysine synthesis. during periodic cultivation the maximum specific rate of the culture growth can be achieved with a more intensive stirring than the maximum lysine synthesizing activity. at different intensities of medium stirring the lysins synthesizing activity was directly related to the activity of tricarboxylic acid cycle dehydrogenases. it is suggested that a decrease in t ... | 1976 | 800255 |
| demonstration of cell division by septation in a variety of gram-negative rods. | through use of an initial fixative employing a combination of crotonaldehyde and glutaraldehyde, septa were preserved in thin sections of dividing cells of strains of pseudomonas aeruginosa, salmonella typhimurium, shigella sonnei, and escherichia coli when grown at 30 c in a dilute basal medium. the same procedures, however, revealed only a constrictive division process in proteus vulgaris and erwinia sp. this adds to the evidence that septation, although difficult to demonstrate, is the proces ... | 1975 | 803487 |
| changes in morphology and cell wall structure that occur during growth of vibrio sp. nctc4716 in batch culture. | when grown in batch culture in various media vibrio sp. nctc4716 displayed a distinct sequence of morphological forms. organisms occurred as stout, almost straight rods in exponential phase, curved rods (characteristic of vibrio spp.) in stationary phase, and predominantly as spheres in decline phase. the spheres were formed after growth had ceased due to the depletion of the carbon/energy source. they were not viable, survival of the culture depending on the few rod forms that remained during t ... | 1975 | 803546 |
| frequency of sarcocystis spp in detroit, metropolitan area, michigan. | a survey of sarcocystis spp in feral animals and in domesticated animals slaughtered in detroit, mi, was undertaken during a 6-month period, april to september, 1973, using histologic and digestion diagnostic techniques. results indicated 75.3% of 789 sheep and 10.8% of 306 lambs were infected. infection in young and adult sheep was low in april (0% of 78 lambs and 6.7% of 62 adult sheep), but increased in july (24% of 90 lambs and 94.1% of 201 adult sheep). high frequency of sarcocystis in summ ... | 1975 | 803806 |
| chondroitinase-producing bacteria in natural habitats. | a search was undertaken for bacteria which degrade chondroitin sulfate in nature and to find bacteria with a usefully high rate of chondroitinase (chsase) productivity. first, 253 chsase-producing bacteria were obtained from aquatic and land environments in japan by aerobic and anaerobic screening methods. identification according to bergey's manual of determinative bacteriology or bain and shewan (1968) permitted assignment of the majority of the isolates to seven genera, aeromonas, vibrio, fla ... | 1975 | 803822 |
| blood protozoa of imported birds. | large numbers of birds, until recently, were brought into the united states each year. countries of origin were varied, and included those of australasia, africa, south america, and the caribbean islands, as well as other places. with them of course come their parasites, some of which may be potential pathogens to domestic avifauna. in part for this reason, a survey was undertaken of blood parasites of birds from pet shops and importers. so far a total of 1234 birds belonging to 186 species has ... | 1975 | 804038 |
| comparison of amikacin and gentamicin. | the sensitivity to gentamicin (g) and to amikacin (a) of 25 strains of escherichia coli (ec), 25 klebsiella sp. (k), 25 proteus and providence sp. (pp), and 25 ps. aeruginosa (pa) were tested in vitro by the disc method, by the inocula-replicating method, and by a tube dilution technique using 10-5 microorganisms/ml. bactericidal concentrations active on 50% and 90% of the strains were 1.5 and 4.5 mug/ml for ec, 3 and mug/ml for k, 1.5 and 3 mug/ml for pp, and 3 and 3 mug/ml for pa. resistance t ... | 1975 | 804370 |
| purification and properties of arylsulfatase. a from human urine. | arylsulfatase a (cerebroside sulfate sulfohydrolase) was purified 3500-fold at a 7% yield from human urine. a crude urinary protein concentrate was prepared by treating pooled urine with ammonium sulfate and subsequently drying the precipitate with acetone. the powder thus obtained was extracted with buffer and was subjected to chromatographic and electrophoretic procedures as follows: (a) ammonium sulfate reverse gradient solubilization chromatography; (b) deae-cellulose chromatography; (c) sep ... | 1975 | 804474 |
| microbial fermentation of rice straw: nutritive composition and in vitro digestibility of the fermentation products. | rice straw was fermented with cellulomonas sp. and alcaligenes faecalis. microbial cells and undigested residue, as well as chemically treated (naoh or nh4oh) and untreated straws, were analyzed for nutrient composition and in vitro digestibility. in a typical fermentation, 75% of the rice straw substrate was digested, and 18.6% of the total substrate weight that disappeared was recovered as microbial protein. the microbial cell fraction was 37% protein and 5% crude fiber; the residue was 12% pr ... | 1975 | 804853 |
| bacterial degradation of polychlorinated biphenyls ii. rate studies. | polychlorinated biphenyls (aroclor 1221, 1242 and 1254) at concentrations up to 0.1% in glucose did not inhibit the growth of lake water bacteria. the bacteria used aroclor 1221 and 1242 but not 1254 as sole carbon and energy sources for growth. less than 1% of lake water bacteria, however, possess this ability. seven bacterial isolates from aroclor agar plates were identified; five belonged to achromobacter sp. and two were pseudomonas sp. the metabolic breaksown of aroclor 1221 was followed. t ... | 1975 | 804943 |
| antibiotics from mycoplasma. ii. characterization of antibiotics produced by mycoplasma sp. rpiii. | | 1975 | 805114 |
| isospora ohioensis sp. n. proposed for i. rivolta of the dog. | a new name, isospora ohioensis, is proposed for i. rivolta-like oocysts from dog feces. the name i. rivolta is retained for the cat species. the structure of the oocysts of i. ohioensis is described from a cloned culture of oocysts. oocysts are 24 by 21 mum, sporocysts 17 by 12 mum, and sporozoites 10 by 3 mum. in cross-infection experiments none of 6 coccidia-free dogs shed oocysts after consuming feline i. rivolota, and none of 4 coccidia-free cat shed oocysts after eating canine i. rivolta. | 1975 | 805831 |
| spectral properties of phycobilisomes and phycobiliproteins from the blue-green alga-nostoc sp. | | 1975 | 806082 |
| the fine structure of the branched alpha-d-glucan from the blue-green alga anacystis nidulans: comparison with other bacterial glycogens and phytoglycogen. | the fine structure of the glycogen from the blue-green alga anacystis nidulans has been examined. after selective hydrolysis of all (1 yields 6)-alpha-d linkages by a bacterial isoamylase, the resulting mixture of linear chains was subjected to gel permeation chromatography. for purposes of comparison, the glycogens from escherichia coli and arthrobacter sp., amylopectin, phytoglycogen from sweet corn, and shell-fish glycogen were treated similarly. the profiles of the unit chains of a nidulans ... | 1975 | 806344 |
| characterization of a non-type-specific antigen(s) associated with group a streptococcal type 12 m protein. | the sharing of one and possibly two or more non-type-specific antigens by most strains of groups a, c, and g streptococci is described. with the exception of a single strain of proteus mirabilis, this antigen(s) was not found among strains of groups b and d streptococci, coagulase-positive staphylococci, escherichia coli, pseudomonas sp., and salmonella sp. the non-type-specific antigen(s) could not be separated from m protein by fractionation with various saturations of ammonium sulfate or by c ... | 1975 | 806525 |
| characterization of r-phycocyanin. chromophore content of r-phycocyanin and c-phycoerythrin. | r-phycocyanin was purified from two independent isolates of the unicellular red alga porphyridium cruentum. at ph 7.0 the protein sediments as a single component with s 20,w of 5.98 s (at 2 mg/ml, gamma/2=0.02). over a protein concentration range of 0.2 to 0.5 mg/ml (gamma/2=0.16), sedimentation equilibrium gave a molecular weight of 103,000 +/- 6,000 with no evidence of heterogeneity. in common with c-phydocyanins, r-phycocyanin consists of alpha and beta subunits of molecular weights of 18,200 ... | 1975 | 806593 |
| lactobacillus sp. isolates from mouse livers: saprophyte or potential pathogen? | over a 3-year sampling period lactobacillus sp. has been isolated from the livers of barrier-maintained and conventional mice. serology has failed to detect presence of mouse hepatitis virus antibodies in any of these mice. histopathological examination revealed only mild fatty change and small monocytic infiltrates. | 1975 | 806745 |
| [nosema sp. in white rats]. | in 14 days after the intraperitoneal infection of mice with 30% brain emulsion of white mice or of newly-born rats in the peritoneal liquid there were found spores of nosema sp. 5.37 plus or minus 0.88 x 3.04 plus or minus 0.07 in size. the subsequent attempts to passage this organism on the mice by adminestering into them the suspension from the brain and internal organs of infected animals yielded ho results. the material for diagnosing on microsporidians of mammals is being discussed. | 1975 | 806876 |
| apparent isolation of sarcocystis sp. from human blood (a preliminary note). | | 1975 | 806997 |
| hammondia hammondi gen. nov., sp.nov., from domestic cats, a new coccidian related to toxoplasma and sarcocystis. | hammondia hammondi gen.nov.,sp.nov (eimeriorina:sarcocystidae) is described as an obligate heteroxenous protozoon of domestic cats (final host) and laboratory mice (experimental intermediate host). oocysts from the final host are infectious only for the intermediate host; and cysts from the intermediate host are infectious only for the final host. intracellular cysts develop principally in striated muscle of mice that ingest oocysts, with a few cysts in the brain and perhaps elsewhere. cysts are ... | 1975 | 807048 |
| klossiella spp. in the kidneys of peramelid, petaurid, and macropodid marsupials. | klossiella spp. were found in kidneys of individuals from six genera in two of the three superfamilies of australian marsupials. klossiella quimrensis sp.n. is described in the bandicoots, isoodon obesulus and perameles gunnii (peramelidae). k. convolutor sp.n. is described in the ringtail possum pseudocheirus peregrinus (petauridae). three macropodid genera were infected. k.serendipensis sp.n. is described in the swamp wallaby, wallabia bicolor, and k. callitris sp.n. is described in the wester ... | 1975 | 807049 |
| intraspecific chromosome variability in a lemur from the north of madagascar: lepilemur septentrionalis, species nova. | a cytogenetical study of 25 lepilemur from the north of madagascar has given evidence for six karyotypes (with four diploid numbers). four of the karyotypes with these diploid numbers--2n = 38, 2n = 36, 2n = 34--we believe evolved from one another by centric fusion; and two karyotypes resulted from the hybridization of two of these (2n = 37 and 2n = 35). the different karyotypes distinguish themselves clearly from those of other species of lepilemur. we have named a new species, lepilemur septen ... | 1975 | 807113 |
| photoreactivation of uv-irradiated blue-green algae and algal virus lpp-1. | ultraviolet (uv) sensitivity and photoreactivation of blue-green algae cylindrospermum sp., plectonema boryanum, spores of fischerella muscicola and algal virus (cyanophage) lpp-1 were studied. the survival value after uv irradiation of filaments of cylindrospermum sp. and virus lpp-1 showed exponential trend and these were comparatively sensitive towards uv than f.muscicola and p.boryanum. photoreactivation of uv-induced damage occurred in black, blue, green, yellow, red and white light in cyli ... | 1975 | 807175 |
| lipiarmycin, a new antibiotic from actinoplanes. ii. isolation, chemical, biological and biochemical characterization. | lipiarmycin, a metabolite of actinoplanes deccanensis nov. sp. (parenti et al.), has been isolated in pure form. it has a molecular formula c52 congruent to 54h74 congruent to 76cl2o19, (m.w. = 1,073 congruent to 1,099). from its chemical and physico-chemical characteristics, lipiarmycin can be considered a new antibiotic. lipiarmycin is highly active against gram-positive bacteria, including strains resistant to the medically important antibiotics and protects mice experimentally infected wi ... | 1975 | 807545 |
| mycoplasmas isolated from the respiratory tract of horses. | ten mycoplasmas were isolated from 130 nasopharyngeal swabs from thoroughbred horses with acute respiratory disease and three from 198 apparently normal horses. two mycoplasmas were isolated from 21 tracheal swabs taken at necropsy. these mycoplasmas, together with six isolated from the equine respiratory tract by other workers, were subjected to biochemical and serological tests. other properties examined in certain representative strains were appearance under the electron microscope, ability t ... | 1975 | 807616 |
| comparative studies on related free-living and pathogenic amebae with special reference to acanthamoeba. | comparative studies were conducted on the structure, nutrition, protein composition, immunology, and effect on cell cultures of acanthamoeba sp. (lilly a-1 strain), a. castellanii (singh and neff strains), a. astronyxis, a. comandoni, a. polyphaga, a. terricola, hartmannella vermiformis, and naegleria gruberi. lilly a-1 strain of acanthamoeba received special attention owing to its pathogenicity for experimental animals. distinct differences were noted in structure, nutrition, and antigenic comp ... | 1975 | 807717 |
| competitive effects of intestinal microflora on vibrio cholerae in gnotobiotic mice. | the coexistence of vibrio cholerae and several intestinal bacteria was determined in gnotobiotic mice. the bacteria tested included a bacteroides sp, clostridium difficile, clostridium perfringens type a, 2 separate isolates of escherichia coli, 2 different lactobacilli, 2 separate isolates of proteus mirabilis, pseudomonas maltophilia, and streptococcus faecalis. each species of bacteria became established and was recovered repeatedly from the stools during the studies. no single strain or spec ... | 1975 | 807775 |
| basis for the resistance of several algae to microbial decomposition. | the basis for the resistance of certain algae to microbial decomposition in natural waters was investigated using pediastrum duplex, staurastrum sp., and fischerella muscicola as test organisms. enzyme preparations previously found to convert susceptible algae into spheroplasts had no such effect on the resistant species, although glucose and galacturonic acid was released from p. duplex walls. little protein or lipid but considerable carbohydrate was found in the walls of the refractory organis ... | 1975 | 808166 |
| effect of pesticides on blue-green algae and nitrogen-fixation. | the effects of the pesticides, amitrol, a derivative of amitrol (viz. 3,5-diamino-1,2,4-triazole), diquat, paraquat, linuron, mcpa, malathion, and monuron, were studied on the nitrogen-fixing algae, anabaena cylindrica, aulosira sp., calothrix elenkenii. chlorogloeae frischii, cylindrospermum muscicola, nostoc sp. from collema tenax, nostoc muscorum tolypothrix tenuis, and westiellopsis sp. in general, two types of response were discernible; an initial period of depression succeeded by an increa ... | 1975 | 808179 |
| allophycocyanin b (lambdamax 671, 618 nm): a new cyanobacterial phycobiliprotein. | a hitherto undescribed red fluorescent phycobiliprotein (maximum emission at congruent to 680 nm), characterized by long wavelength absorption maxima in the visible region at 671 nm (xi = 172000 m(-1).cm(-1) per monomer of mol. wt. 30600)and 618 nm, has been purified to homogeneity from unicellular cyanobacterium, synechococcus sp., and from a filamentous cyanobacterium, anabaena variabilis. the name allophycocyanin b has been proposed for the new protein. a. variabilis allophycocyanin b is ch ... | 1975 | 808186 |
| requirement of low oxidation-reduction potential for photosynthesis in a blue-green alga (phormidium sp.). | photosynthesis in a phormidium species which forms dense conical-shaped structures in thermal springs is strongly inhibited by aeration but is stimulated by sulfide and other agents (cysteine, thioglycolate, sulfite) which lower the oxidation-reduction potential. the compact structures which this alga forms in nature may restrict oxygen penetration from the enviroment so that the anaerobic or microaerophilic conditions necessary ofr photosynthesis can develop. the alga may be defective in a re ... | 1975 | 808187 |
| antraformin, a new inhibitor of bacillus subtilis transformation. | a convenient method was worked out which discriminates between inhibitory activity of compounds against bacillus subtilis transformation and their antibacterial or growth inhibition activity. by this assay system, several drugs and antibiotics were tested and some of them were found to be more inhibitory to transformation than to bacterial growth. this method was further applied to look for specific inhibitors among culture broths of streptomyces, and during this screening program, streptomyces ... | 1975 | 808524 |
| a review of 105 necropsies in captive baboons (papio cynocephalus). | in contrast to the findings in newly caught babboons in africa, the leading cause of death in captivity in america was a pneumonia and enteritis complex. bacterial species such as proteus morgani, proteus mirabilis, clostridium sp., pseudomonas paracolon, pathogenic escherichia coli and cocci have been isolated in association with a pneumoenteric syndrome of 35 newborn baboons, including neonates. the majority of these animals died with pulmonary factors such as anoxia and pneumonia. | 1975 | 808667 |
| [investigations on the standardization of polytropic substances used in microbiological test procedures. i. suitability of vitamin-free casein hydrolysates as standardizable source of n and c for bacterial growth (author's transl)]. | comparative testing of vitamin-free casein hydrolysates produced by merck, difco and sheffield showed that the products are evidently fairly well standardised by the manufacturing specifications and satisfy requirements as polytropic source of n and c for microbiological test procedures in which high degree of reproducibility is demanded. tests were conducted with strains of e. coli, a. punctata, p. aeruginosa and myxobacter sp. and showed that differences within the trial groups in the colony c ... | 1975 | 808926 |
| sarcocystis booliati n.sp. and a parasite of undetermined taxonomic position, octoplasma garnhami n. gen. n. sp., from the moonrat, echinosorex gymnurus. | sarcocystis booliati n.sp. is described from the moonrat echinosorex gymnurus (mammalia, insectivora) from west malaysia. the cysts are very thin-walled, not visible to the naked eye, and have no trabeculae or cytophaneres. they are found in skeletal but not heart muscle. the zoites are small, 5-8 by 2-3 mum with a mean of 6.5 by 2.2 mum, in dry fixed smears. octoplasma garnhami n.gen. n.sp., a parasite of undetermined taxonomic status but belonging to the coccidiasina, apicomplexa, is also desc ... | 1975 | 809845 |
| sarcocystis sp. in the myocardium of a water buffalo from sulawesi (celebes), indonesia. | | 1975 | 809847 |