| evaluation and comparisons of biodegradable substances as osteogenic agents. | this study compared the osteogenic potential and tissue compatibility of biodegradable copolymers--pla/pga--and a biodegradable ceramic--ca3(po4)2. these compounds were placed in experimentally created defects in rat tibias, both in combination and singly, and evaluated at 14, 28, and 42 days. the ceramic served as a format to result in uniform osteogenesis throughout the defect. the copolymer implants resulted in a more gradual bone formation, progressing slowly from the would peripheries. the ... | 1977 | 266677 |
| the representation of motor-unit action-potentials on skin-surface electromyograms of the masseter and temporal muscles in man. | | 1977 | 266875 |
| a survey of human genetics in the dental school curriculum. | a survey of american dental schools was conducted to determine the extent to which genetics is currently taught. results indicate that there is a stronger emphasis at the postdoctoral level than at the predoctoral level and that the approach to teaching genetics tends to multidisciplinary. some dental schools have already given organizational status to genetics and have instituted clinical activities in orofacial or craniofacial genetics. considerable interest was shown in audiovisual materials ... | 1977 | 267638 |
| sex differences in response to hepatitis b infection among patients receiving chronic dialysis treatment. | patients undergoing treatment at a community-based renal dialysis clinic were monitored monthly for hepatitis b surface antigen (hbsag) and antibody to hbsag (anti-hbs). of 160 patients who began treatment hbsag(-)/anti-hbs(-), 77 subsequently became hbsag(+). once hbsag(+), males were more likely to remain hbsag(+) indefinitely, whereas females were more likely to convert to hbsag(-) and develop anti-hbs. this was not due to a sex difference in exposure to hepatitis b virus because only patient ... | 1977 | 267950 |
| release of mammotrophic activity by the rat placenta. | | 1977 | 268131 |
| further studies of the role of geometry of arterial system of the brain in "breakthrough" of cerebral blood flow autoregulation. | | 1977 | 268844 |
| abnormal lithium and sodium transport in erythrocytes of a manic patient and some members of his family. | this paper compares the transport of li(+) and na(+) in erythrocytes from a patient with mania and from members of his family to that in erythrocytes from normal humans. in normal human erythrocytes, li(+) is transported by at least three operationally distinct pathways: one inhibited by ouabain (ouabain-sensitive), one by phloretin (phloretin-sensitive), and one not inhibited by either compound (insensitive). li(+) can be driven up its electrochemical potential gradient by an oppositely directe ... | 1977 | 269417 |
| the concentration of selected major and trace minerals in human dental plaque. | | 1977 | 270327 |
| animal studies concerning the cariogenicity of dry breakfast cereals. | four studies were performed in rats and hamsters concerning the cariogenicity of cereals and the role of sucrose in that process. the findings indicate that sucrose content per se does not necessarily reflect the cariogenic potential. presweetened cereals were more conducive to the formation of smooth surface caries in the hamster than were nonpresweetened cereals while no major differences between the cereals were observed in occlusal caries in rats. | 1977 | 270483 |
| the effect of feeding frequency on rat caries. | | 1977 | 270496 |
| man in a trance. | | 1977 | 271150 |
| pulsed nuclear magnetic resonance studies of human bone marrow. | pulsed nuclear magnetic resonance (nmr) studies of human bone marrow reveal that the proton spin-lattice relaxation times (t1) of acute myeloid leukemia (aml) and chronic myeloid leukemia (cml) are much greater than the t1 of normal bone marrow. | 1977 | 271308 |
| 14c vitamin a in developing rat teeth and bone. a whole body-autoradiographic study. | the distribution of vitamin a in developing young rats has been studied. low doses of 14c-retinol were administered intraperiotoneally and the uptake analyzed autoradiographically. the vitamin was found to accumulate mainly in the intestines, liver, kidney, adrenal and brown fat. no uptake could be detected in hard tissue forming cells nor in any hard tissue, except in the secretory ameloblasts of the incisors. | 1977 | 271454 |
| cytodifferentiation in the acute myeloblastic leukemias of man. | correlation analysis of numbers of colony-forming progenitor cells was used as an approach to the quantitation of human pluripotent stem cells. marrow specimens were obtained from 24 patients with untreated acute myeloblastic leukemia, 22 patients under treatment, and 29 patients with no hematologic malignant disease. three classes of progenitor cells were assayed: burst-forming units dependent on erythropoietin (bfu-e), colony-forming units dependent on erythropoietin (cfu-e), and granulopoieti ... | 1978 | 271747 |
| the bicistronic nature of lens alpha-crystallin 14s mrna. | the a2 and b2 polypeptide chains of calf lens alpha-crystallin are synthesized on a 14s, 1500-nucleotide mrna and a 10s, 735-nucleotide mrna, respectively. the 10s mrna is theoretically compatible with the size of the b2 chain, but the 14s mrna contains approximately twice the required number of nucleotides necessary for a2 chain synthesis. this fact raises the question of the function of the additional nucleotide sequence in the 14s mrna. the following observations on 14s mrna suggest that it m ... | 1977 | 271967 |
| cortical structure of the pig mandible after the insertion of metallic implants into alveolar bone. | | 1977 | 272151 |
| some electrochemical characteristics of human tooth enamel. | | 1977 | 272152 |
| l-asparaginase in treatment of acute leukemia in children. | l-asparaginase from escherichia coli--crasnitin was used in 14 children with acute leukemia unresponsive to conventional treatment: 11 acute lymphoblastic leukemias, 1 acute myeloblastic leukemia, 2 other forms of leukemia. the remission induction was obtained in 70% of applications. median of remission duration was 90 days. serious side effects were observed. the validity of l-asparaginase in therapy of advanced childhood all is stressed. | 1978 | 273152 |
| effect of intraocular lenses on the corneal endothelium. | methacrylate surfaces adhere to corneal endothelial cell membranes and appear to tear off the cell membranes as they separate. this adhesion appears to cause much of the massive cell damage seen at the time of intraocular lens insertion even in the hands of several groups of very experienced implant surgeons. the damage appears correlated with the incidence of endothelial touch, and may be avoidable both by avoiding contact, even for a brief period, between the endothelium and the intraocular le ... | 1977 | 273337 |
| primary induction of vitellogenin mrna in the rooster by 17beta-estradiol. | we have studied the kinetics of vitellogenin mrna accumulation in rooster liver after a primary injection of 17beta-estradiol. the levels of vitellogenin mrna have been determined both by hybridization of total cellular rna to vitellogenin cdna and by translation of vitellogenin mrna in a wheat germ cell-free system. the results obtained by both methods of analysis are in good agreement and indicate that vitellogenin mrna is present in the liver of normal roosters at a level of 0-5 molecules per ... | 1978 | 273910 |
| cell fusion in vitro. | | 1978 | 274798 |
| tularemia in metropolitan new york. | | 1978 | 280774 |
| regeneration of corticospinal axons in the rat. | | 1977 | 281190 |
| an environmental survey for yersinia enterocolitica in houston, texas--phase i: the canine. | | 1977 | 286356 |
| yersinia enterocolitica serotype 0.20 infection associated with sudden death in an eight-month-old infant. | | 1979 | 288242 |
| effect of bullet wounding on pig skeletal muscle electrolytes and water content. | | 1979 | 291252 |
| arachidonic acid induced mortality in animals - an appropriate model for the evaluation of antithrombotic drugs? | sodium arachidonate (1.1 mg/kg b.w.) was injected into a marginal ear vein of rabbits according to silver m.j. et al. (1). 94% of the animals died within a few minutes. we investigated to what extent these lethal effects of arachidonic acid (possibly caused by embolizing platelet thrombi) can be prevented by potential antithrombotic drugs. as indicated in the tables the animals are protected by some compounds, especially the nonsteroidal anti-inflammatory agents, in a dose-dependent manner. howe ... | 1979 | 291305 |
| campylobacter enteritis and yersinia enterocolitica infection in new zealand. | a three-month survey was undertaken to determine the incidence of campylobacter jejuni and yersinia enterocolitica in diarrhoeal disease and acute abdominal disease in palmerston north. c. jejuni was isolated from five domiciliary patients and one hospitalised patient with acute diarrhoea but there were no isolations from patients suffering from acute abdominal disease. the isolation rates for c. jejuni in domiciliary and hospitalised patients with acute diarrhoea were 7.8 percent and 1.7 percen ... | 1979 | 292870 |
| [first isolation of yersinia enterocolitica in central america and review of the literature]. | | 1979 | 293004 |
| yersinia enterocolitica meningitis with septicemia and spontaneous peritonitis]. | | 1979 | 293500 |
| ant-mediated inactivation of salmonella phage l-specified repression at or of prophage l. | ant product of phage p22 inactivates repression of prophage l at the right-hand operator or and allows for transactivation of prophage gene 12. the transactivation efficiency observed with a series of phage and prophage recombinants, using single superinfection of a lysogenic bacterium, is about the same as that recently observed at ol of prophage l. this finding is in contrast to the failure to demonstrate derepression at or of prophage l in an experimental system employing double superinfectio ... | 1979 | 295402 |
| unspecific action of opiates on the acetylcholine release from striatal slices. | | 1978 | 296265 |
| [polyarthritis following yersinia enterocolitica infection]. | | 1977 | 300852 |
| marker properties of tumor and lymphoid cell lines derived from a patient with squamous cell carcinoma. | a squamous cell carcinoma tumor cell line, colo 227, derived from a metastatic tumor in a caucasian male, produces both parathyroid hormone and carcinoembryonic antigen. a chromosome mode of 106 predominated and the x and y chromosomes were retained. seven marker chromosomes were identified. cytogenetic analysis revealed an isochromosome 8 marker similar to a hela cell line marker and an isochromosome 17 marker described in other cancers. an autochthonous lymphoid cell line, colo 219, was establ ... | 1977 | 301054 |
| partial tetrasomy 9(9pter to 9q2101) due to an extra iso-dicentric chromosome. | a 3-year-old boy with partial no. 9 tetrasomy is described. the patient showed markedly retarded physical and mental development as well as multiple congenital anomalies. routine chromosome analysis revealed an extra c-group chromosome. it had a pronounced secondary constriction at the proximal part of its long arm. based on studies by a variety of banding techniques, the extra chromosome was identified to be an iso-dicentric no. 9 chromosome with inactivation of one of the two centromeres, the ... | 1977 | 302683 |
| familial trisomy 20p five cases and two carriers in three generations a review. | a clinically normal mother of three retarded children has been determined by g-banding to have a balanced translocation 46,xx,t(13;20) (q34;p11.2). the children each have an unbalanced form of the translocation with partial trisomy for 20p. extensive gene marker studies have been unable to affix any specific gene locus onto the short arm of chromosome 20. the balanced translocation was inherited from the maternal grandfather. two phenotypically abnormal deceased members of the family are believe ... | 1977 | 302689 |
| active thymus derived suppressor lymphocytes in human cord blood. | | 1977 | 302917 |
| erythrocyte autoantibodies induced in mice immunized with rat antigens. | antibody reacting against syngeneic mouse erythrocytes could not be elicited (by rat erythrocytes) in athymic nude mice. rat antigen preparations from heart, muscle testes, brain erythrocyte ghosts and foetal material failed to elicit detectable autoantibody reactivity against mouse erythrocytes, even though all these preparations (other than brain and foetal) induced a reduction in half life of syngeneic murine erythrocytes in vivo. we suggest that an unstable rat erythrocyte antigen is respons ... | 1977 | 303095 |
| [resistance of the suppressor function of t-cells to agents possessing an antiproliferative action]. | administration of cyclophosphamide in a dose of 50 to 400 mg/kg to mice immunized with sheep red blood cells failed to decrease significantly the capacity of the splenic cells of these mice to suppress the primary immune response in transplantation to intact syngeneic recipients. irradiation of the donors of immune splenic cells (isc) in a dose of 900 r or treatment of isc in vitro with mitomycin c failed to influence their suppressor activity. supernatant obtained after the ultracentrifugation ... | 1977 | 303129 |
| genetic and cellular control of spontaneous autoimmune thyroiditis in os chickens. | b-locus genotypes have been defined in obese strain (os) chickens that spontaneously develop autoimmune thyroiditis (sat), and in white leghorn cornell c strain (cs) chickens from which the os was selected. the b-locus influences sat, and some possible mechanisms are discussed. thymic abnormalities in os, as contrasted with cb birds, are also discussed and may play a role in sat, as may an intrinsic defect in the thyroid gland itself. | 1977 | 303450 |
| x-linked recessively inherited non-specific mental retardation. report of a large family. | a large kindred is described in which 22 males and 3 females show non-specific mental retardation with impaired speech. an x-linked recessive is the most likely mode of inheritance of this condition. similar families have been described in the literature, characteristic physical abnormalities are absent and performance i.q. tends to be higher than verbal i.q. this possible heterogenous condition may be a major individual cause of mental deficiency in males, and may account for the excess of male ... | 1977 | 305754 |
| immune histochemical and electron microscopic observations on so-called non-specific mesenterial lymphadenitis. | two cases of so-called mesenterial lymphadenitis in childhood were investigated with the immunoperoxidase technique. one more case was studied electron microscopically. all three cases were morphologically identical. in two cases infection with yersinia enterocolitica was proven serologically. the majority of the lymphoid cells which filled the strongly distended sinuses represented electron microscopically various steps of the lymphocyte transformation. immune histochemically, the blasts contai ... | 1977 | 307931 |
| [bacteriological and serological studies in the diagnosis of yersinia enterocolitica infections in patients treated in a rheumatology hospital department]. | | 1978 | 309598 |
| humoral immune stimulation and antiepithelial antibodies in yersinia infection. | results consistent with a general humoral immune stimulation were found when 127 sera from 89 patients with yersinia enterocolitica infection were studied. significantly increased gammaglobulin concentrations and elevated isohemagglutinin titers were seen in these sera as compared to sera from normal blood donors and patients with streptococcal infection. antinuclear and anti-smooth muscle antibodies were demonstrated in both yersinia and streptococcal infection. the prevalence of non-organ spec ... | 1978 | 310680 |
| idiotypic regulation of the immune system. common idiotypic specificities between idiotypes and antibodies raised against anti-idiotypic antibodies in rabbits. | anti-idiotypic antibodies (ab2) were raised in allotype-matched rabbits against anti-carbohydrate or anti-tobacco mosaic virus antibodies (ab1). several ab2 were purified and injected into a third series of rabbits iii which synthesized antiantiidiotypic antibodies (ab3). antigen was then given for the first time in those rabbits who had synthesized ab3. the specific antibody synthesized in rabbits iii was called ab1'. anti-idiotypic antibodies were raised against purified ab3 antibodies (ab4). ... | 1979 | 312906 |
| enhancement of the primary cytotoxic response to membrane by a lymphokine costimulator. | the primary and secondary cytotoxic t cell responses of c57bl/6 (h-2b) mouse spleen cells to p-815 membrane fragments (h-2d) were examined. the primary response required the addition of a supernatant from mitogen-stimulated spleen cells, or costimulator, to the culture medium. costimulator had little effect on the secondary response unless the spleen cells were first passed through a nylon wool column. our data suggested that secondary cultures produced their own costimulator and that adherent c ... | 1979 | 313052 |
| morbidity in schistosomiasis mansoni in relation to intensity of infection: study of a community in kisumu, kenya. | | 1979 | 313160 |
| quantification of bcg-induced reactions of t and b areas in peripheral lymphoid organs of young adult balb/c mice. a histomorphometrical and autoradiographical study. | significant structural alterations of the axillary lymph nodes and spleens were revealed by histomorphometry following intraperitoneal injection of bcg into young adult balb/c mice. the relative proportions of the germinal center areas were increased in lymph nodes as well as in spleens. the overall proportion of the b cell areas, however, showed a significant increase only in the spleens, compared to a significant reduction in the lymph nodes. by contrast, t cell areas appeared significantly re ... | 1979 | 313564 |
| veneral diseases. | | 1979 | 313576 |
| immune responses in yersinia-associated reactive arthritis. | | 1979 | 318096 |
| yersinia enterocolitica in western australia. | | 1979 | 318488 |
| effects of ammonium ions on sporulation of saccharomyces cerevisiae. | | 1977 | 321231 |
| the identification of new rna-binding proteins in the escherichia coli ribosome. | | 1977 | 321250 |
| a simple one-step hemolytic assay for c2 with c2-deficient human serum. | a simple one-step procedure has been developed for the molecular titration of c2 by utilizing the ability of the test material to restore the hemolytic activity of human serum selectively deficient in c2 (c2d serum). in this assay, equal volumes of ea (10(8) cells/ml), c2d serum (1/20), and a suitable dilution of a source of c2 were incubated at 37 degrees c for 60 min and the fraction of cells lysed was used to calculate the effective molecules of c2/ml test material. the assay can be used to t ... | 1977 | 321681 |
| the human cutaneous basement membrane--anchoring fibril complex: preparation and ultrastructure. | the human cutaneous basement membrane (cbm) has been isolated together with the anchoring fibrils (af) of the dermis. these structures are removed from the dermis as a single complex, the cbm-af complex. the epidermis is first removed from the dermis by immersion of whole, defatted skin in cold 2 n nascn for 5 to 6 hr. subsequently, removal of the cbm-af complex is effected by focusing high-intensity ultrasonic energy against the dermal surface. purification of the preparation is achieved by low ... | 1977 | 321701 |
| [on yersinia enterocolitica and yersinia pseudotuberculosis (author's transl)]. | | 1977 | 325251 |
| repression of inducible enzyme synthesis in a mutant of escherichia coli k 12 deleted for the ptsh gene. | the genome of lambda phage with thermosensitive repressor was inserted into the pts region of the escherichia coli chromosome. this lysogenic culture possessed the pts1 phenotype at 30 degrees c. a mutant strain with a deletion covering the ptsh gene was isolated after a prophage curing procedure. the deletion nature of the pts mutation was confirmed in genetical and biochemical experiments. the deletion covered a small fragment of the bacterial genome not extending in the ptsi and lig genes. th ... | 1977 | 329116 |
| [some new aspects on appendicitis (author's transl)]. | 50% of all perforations of the vermiform appendix happen 12 hours or less after onset of the disease. due to the fact that appendectomy is often done too late that the total mortality rate is still to high. this refers especially to infants and elderly people. prae-, intra- and postoperative mistakes are analysed. bacteriologically there are some new aspects concerning anaerobic infections with bacteroides and yersinia enterocolitica. | 1977 | 329613 |
| assessment of typhoid vaccines by using the intraperitoneal route of challenge. | present laboratory tests for human typhoid vaccines use an intraperitoneal route of challenge given 7 days after injection of increasing doses of standard and test vaccines by the same route. in studies reported here, groups of b6d2 mice were vaccinated intraperitoneally with 2 x 10(8) acetone-killed salmonella typhi ty2, with the vi antigen-free variant o-901, or with yersinia enterocolitica and serratia marcescens suspensions. other groups of mice received 200 mug of purified s. typhi or s. ma ... | 1977 | 332627 |
| yersinia enterocolitica infection complicated by glomerulonephritis. | a case of mild glomerulonephritis in a 24-year-old man with clinical and immunohistological findings associated with yersinia enterocolitica serotype 3 infection is described. the role of iga in the pathogenesis of glomerulonephritis associated with mucosal infection is briefly discussed. although attempts to demonstrate y. enterocolitica 3 antigen in the biopsy specimen were unsuccessful, the glomerular deposits of immunoglobulins and complement suggest immune pathogenesis. | 1977 | 333558 |
| yersinia enterocolitica: a review of the bacterium and recommended laboratory methodology. | only in the last few years has yersinia enterocolitica been recognized as an etiologic agent. the organism, however, is widespread in both the animate and inanimate environments. it has been isolated and recovered from a variety of sources including fecal material, foodstuffs, and water, but vehicles of disease transmission are not fully delineated or understood. the bacteriology of y. enterocolitica is reviewed and recommended laboratory methodology is described. | 1977 | 334696 |
| enzymatic degradation of polygalacturonic acid by yersinia and klebsiella species in relation to clinical laboratory procedures. | as scored by several specified plating procedures, clinical and environmental strains of yersinia enterocolitica, yersinia pseudotuberculosis, and klebsiella pneumoniae "oxytocum" showed detectable, albeit generally weak, ability to digest polygalacturonic (pectic) acid. none of these bacterial strains had the vigorous and rapid pectolytic activity on these polygalacturonic acid-containing media that is typical of soft-rot erwinia species, although some of the oxytocum strains came fairly close. ... | 1977 | 334794 |
| yersinia enterocolitica: biochemical, serological, and gas-liquid chromatographic characterization of rhamnose-, raffinose-, melibiose-, and citrate-utilizing strains. | thirteen atypical yersinia enterocolitica isolates, all fermenting rhamnose, raffinose, and melibiose and utilizing sodium citrate within 24 to 48 h at 22 degrees c (y.e.rh+), were examined biochemically-serologically, and by gas-liquid chromatography. these data, as well as cultural, biochemical, and antibiotic susceptibility data gathered from two previous studies involving (i) these same atypical y.e.rh+ isolates, (ii) y. enterocolitica serotypes o:1 through o:15 (rhamnose, raffinose, and cit ... | 1977 | 336641 |
| findings of yersinia in rats and sewer rats. | survey of first methodical experiences in the microbiological examination of sewer rats rattus norvegicus and rats rattus rattus for yersiniae. from total of 178 cadavers 30 yersinia cultures were isolated, including 4 yersinia pseudotuberculosis serotype iii strains. yersinia enterocolitica serotype o3 was isolated only from rats rattus rattus in pig houses. importance of suitable treatment of cadavers (at best in frozen state) and their quick delivery to the laboratory is being discussed. | 1977 | 337734 |
| isolation of yersinia enterocolitica from well water and growth in distilled water. | yersinia enterocolitica was recovered from well water during a large water-borne outbreak of gastrointestinal illness. isolates were predominantly nilehn biotype 1, of which 57% were serologically nontypable. isolation and enumeration of these y. enterocolitica strains were made on m-endo broth. laboratory studies were conducted on selected isolates to establish the growth of y. enterocolitica in distilled water and the competitive growth of this organism in various enteric media. growth was obt ... | 1977 | 339833 |
| inhibition of chloramphenicol binding to escherichia coli 70s ribosomes by 2'(3')-o-aminoacyl-dinucleoside phosphates derived from the aminoacyl-trna acceptor terminus. | the effect of 2' and 3'-o-aminoacyl-dinucleoside phosphates cytidylyl(3'-5')-2'(3')-o-l-phenyl-alanyladenosine (i), cytidylyl(3'-5')-3'-deoxy-2'-o-l-phenylalanyladenosine (iia), cytidylyl(3'-5')-2'-deoxy-3'-o-l-phenylalanyladenosine (iiia), cytidylyl(3'-5')-3'-deoxy-2'-o-glycyladenosine (iib), cytidylyl(3'-5')-2'-deoxy-3'-o-glycyladenosine (iiib), cytidylyl(3'-5')-3'-deoxy-2'-o-l-leucyladenosine (iic), cytidylyl(3'-5')-2'-deoxy-3'-o-l-leucyladenosine (iiic), cytidylyl(3'-5')-3'-o-l-phenylalanyla ... | 1977 | 340224 |
| yersinia enterocolitica and pseudotuberculosis infection in children. | the clinical symptoms of infections with y. ent. and pseudotub. are of a different nature. whether the infection becomes apparent in form of a pseudo-appendicitis, enterocolitis or a typho-septic disease does apparently not only depend on the type of pathogens but also on the children's condition with regard to their resistance. all forms mentioned are observed in case of infections with yersinia pseudotuberculosis as well as in case of infections with yersinia pseudotuberculosis as well as in c ... | 1978 | 343179 |
| yersinia enterocolitica septicemia. | yersinia enterocolitica was recovered from the blood of an infant with sepsis and fever but with few gastrointestinal symptoms. the age of this patient was unusual as septicemia owing to this organism has most frequently been seen in adults. because of the absence of digestive symptoms, it is uncertain what the portal of entry of the organism might have been. yersinia enterocolitica is not often recognized, either because of difficulties in identification or because it may not be recognized as a ... | 1978 | 343573 |
| fermentation of raffinose by lactose-fermenting strains of yersinia enterocolitica and by sucrose-fermenting strains of escherichia coli. | introduction of plasmids carrying the lacy gene (lactose permease gene) into yersinia enterocolitica results in cells being able to ferment both lactose and raffinose. transfer of such plasmids into escherichia coli c600 (lacy) confers ability to ferment lactose but not raffinose. derivatives of c600 that ferment both lactose and sucrose (lac+ scr+ strains) are able to ferment raffinose, but do not grow well on raffinose minimal medium. fermentation of raffinose by lac+ strains of y. enterocolit ... | 1978 | 344338 |
| tn951: a new transposon carrying a lactose operon. | a new transposon, tn951, is described, which derives from plasmid pgc1, originally isolated from yersinia enterocolitica. tn951 is 16.6 kb long and presumably flanked by small inverted repeats. it carries the lac genes i, z and y. this lac system is homologous to the e. coli lac operon. however, homology is restricted to 5.6 kb. the dna sequences surrounding the lac operons on tn951 and e. coli are nonhomologous. this leads to speculations about the origin of the e. coli lac operon itself. | 1978 | 349354 |
| use of the t4 polynucleotide ligase in the joining of flush-ended dna segments generated by restriction endonucleases. | double-stranded dna segments with completely base-paired ends were obtained by the action of various restriction endonucleases on phage and plasmid dnas. these segments were joined covalently by the t4 polynucleotide ligase. the joining was monitored by the electron microscopy count of intramolecularly circularized segments. the highest extent of joining, close to 75%, was observed at 15-25 degrees c with the segments resulting from the action of the bacillus subtilis (strain r) restriction endo ... | 1978 | 350585 |
| ntau-methylhistidine (3-methylhistidine) and muscle protein turnover: an overview. | actin and myosin, the contractile proteins of skeletal muscle, are methylated following peptide bond synthesis, with production of ntau-methylhistidine (3-methylhistidine, 3-mehis). during intracellular breakdown of these proteins, the 3-mehis is released and excreted in the urine. studies on tissue distribution of 3-mehis and on its qunatitative excretion following administration to rats and to man show that urinary output of this amino acid provides a reliable index of the rate of myofibrillar ... | 1978 | 350635 |
| pathobiology of lassa fever. | | 1978 | 350792 |
| insulin binding to monocytes and insulin action in human obesity, starvation, and refeeding. | insulin binding to monocytes and insulin action in vivo was examined in 14 obese subjects during the postabsorptive state and after starvation and refeeding. tissue sensitivity to insulin was evaluated with the euglycemic insulin clamp technique. the plasma insulin concentration is acutely raised and maintained 100 muu/ml above the fasting level, and plasma glucose is held constant by a variable glucose infusion. the amount of glucose infused is a measure of tissue sensitivity to insulin and ave ... | 1978 | 350903 |
| biological containment and cloning vector transmissibility. | | 1978 | 351084 |
| mechanisms of headache. | it is thus evident that the mechanisms of headache differ widely from one syndrome or symptom complex to another. both intracranial and extracranial structures may be involved. knowledge of headache mechanisms is indispensable to the clinician charged with the management of his patient's complaints. such knowledge should guide the investigations which may be required, and the treatment program to be instituted. as knowledge of headache mechanisms is broadened and our current concepts are altered ... | 1978 | 351305 |
| protein analysis of outer membranes prepared from escherichia coli k 12 by different procedures. | | 1978 | 352350 |
| interactions of lead poisoning and vitamin e deficiency. | | 1978 | 355951 |
| cervicofacial abcesses of unknown origin. a survey of eighty-one cases. | a survey of eighty-one patients with cervicofacial abscesses of unknown origin is presented. the salient clinical features and the treatment of the abscesses are described. mainly affected were children under 4 years of age, and the submandibular and submental regions were the most common sites of involvement. staphylococcus aureus was the predominant pathogenic organism, and epidemic strains were implicated in some cases. a high incidence of resistance to penicillin was noted. the nasal vestibu ... | 1978 | 355964 |
| the longevity of clonorchis sinensis. | the persistence of clonorchis sinensis infestation of the bile duct for a period of at least 26 years without neoplasia supervening is reported in a chinese immigrant to australia. | 1978 | 355989 |
| [orchitis]. | | 1978 | 356002 |
| replacement of pseudouridine in transfer rna by 5-fluorouridine does not affect the ability to stimulate the synthesis of guanosine 5'-triphosphate 3'-diphosphate. | the requirement for ribothymidine and pseudouridine in the tpsicg loop of trna for its activity in the ribosome and trna-stimulated synthesis of guanosine 5'-triphosphate 3'-diphosphate (pppgpp) by stringent factor has been tested by the use of a purified trnaphe (883 pmol of phenylalanine incorporated/a260 unit) in which 92% of the pseudouridine, 98% of the ribothymidine, 98% of the dihydrouridine, and 88% of the uridines were substituted by 5-fluorouridine. this trna was quantitatively as acti ... | 1978 | 356873 |
| aminoacyl-trna synthetases from yeast: generality of chemical proofreading in the prevention of misaminoacylation of trna. | the specificity of valyl-, phenylalanyl-, and tyrosyl-trna synthetases from yeast has been examined by a series of stringent tests designed to eliminate the possibility of artefactual interference. valyl-trna synthetase, as well as activating a number of amino acid analogues, will accept alanine, cysteine, isoleucine, and serine in addition to threonine as substrates for both atp-ppi exchange and transfer to some trnaval species. the transfer is not observed if atempts are made to isolate the ap ... | 1978 | 356880 |
| high-resolution 13c nuclear magnetic resonance studies of glucose metabolism in escherichia coli. | high-resolution 13c nuclear magnetic resonance spectra of suspensions of escherichia coli cells have been obtained at 90.5 mhz by using the fourier transform mode. anaerobic cells incubated with [i-13c]glucose show a time course of glycolysis in which the alpha and beta glucose anomers disappear at different rates, lactate, succinate, acetate, alanine, and valine accumulate as end products of glycolysis, and fructose bisphosphate appears as an intermediate. it is shown that fructose bisphosphate ... | 1978 | 358201 |
| pesticin-dependent generation of somotically stable spheroplast-like structures. | homogenous pesticin, a bacteriocin produced by yersinia pestis, promoted rapid dose-dependent killing of escherichia coli phi but permitted residual generation of cell mass. both growing cells and those blocked in net synthesis of nucleic acids or protein were converted by pesticin to osmotically stable spheroplast-like forms. morphology and viability of cells starved for fermentable carbohydrate were not affected by pesticin. similar spheroplast-like structures were formed from sensitive cells ... | 1978 | 361722 |
| marine cardioactive agents. adenosine and 2'-deoxyadenosine from dasychalina cyathina. | | 1978 | 362107 |
| [yersinia enterocolitica and rheumatic diseases (a review of the literature)]. | | 1978 | 364836 |
| [incidence of intestinal disease due to yersinia enterocolitica (author's transl)]. | enteropathogenic bacteria have been identified in 413 of 7054 patients (5.9%) with intestinal disease who were examined at the institute of hygiene and microbiology, university of würzburg (south germany), during the period november 1975 to november 1977. salmonella was most frequently isolated (304 cases = 4.3%), followed by yersinia enterocolitica (102 cases = 1.5%). cases of shigellosis (7 cases) or infections with so-called enteropathogenic serogroups of escherichia coli (20 cases) were rare ... | 1978 | 367003 |
| isolation of yersinia enterocolitica and yersina pseudotuberculosis from apparently healthy dogs and cats. | | 1978 | 368528 |
| [quantitative studies of motor units of the mouse soleus muscle (demonstrated with retrograde evans blue labeling)]. | | 1978 | 371199 |
| [production of o antigens and antibodies during urinary tract infections due to escherichia coli (author's transl)]. | in 138 adults with monomicrobial e. coli urinary tract infections, igg coated bacteriuria (acb) are found in 9/10 acute pyelonephritis, 21/24 chronic pyelonephritis, 2/5 acute prostatitis, and in only 6/99 lower uti. these urinary antibodies are synthetised localy because iga-s are found in 75%, in the kidney because humoral igg antibodies are detected in only 40% of the acb + patients. o6, o18, o22, o75, are the four most frequent o antigens (47,5%) and no difference were found in the distribut ... | 1979 | 375188 |
| yersinia enterocolitica as an etiology of foodborne illness in man. | | 1977 | 375241 |
| [bacteriophagy and bacteriocinogeny of yersinia enterocolitica]. | | 1979 | 375639 |
| studies on yersinia enterocolitica isolated from swine and dogs. | yersinia enterocolitica serotype 03 was isolated from the colon contents of 27 (4.5%) of 599 bacon pigs on slaughter. two (1.7%) out of 115 dogs were positive by culture for this human-athogenic serotype of y. enterocolitica. a number of other serotypes of y. enterocolitica were also obtained both from porcine and canine enteric contents (4b, 5a, 6, 7, 11, 12, 15, 17, 19, 26b, and non-typeable strains). all these serotypes are supposedly non-pathogenic for man and may possibly originate from the ... | 1979 | 375672 |
| studies on the interaction between different o-serotypes of yersinia enterocolitica and hela cells. | eighty strains of yersinia enterocolitica were examined for their ability to invade hela cells. the following o-serotypes were found to be invasive: 1, 3, 4a, 4c, 5b, 8, 9, 15a, 18, 20, 21 and 22. biochemically, these types are either indole-, aesculin-, and salicin-negative, or indole-positive but aesculin- and salicin-negative. other serotypes of y. enterocolitica did not invade hela cells. biochemically, these non-invasive strains are indole-, aesculin- and salicin-positive. also the non-sucr ... | 1979 | 375673 |
| immunosuppression induced by plasmodium berghei and p. chabaudi infections in mice. | | 1978 | 377186 |
| [purification and physico-chemical analysis of the fimbrial antigen in two different genera of enterobacteriacea: salmonella enteritidis and yersinia enterocolitica (author's transl)]. | chemical, physical and immunological properties of the fimbrial antigen of two different genera of enterobacteriaceae, namely salmonella (s. enteritidis) and yersinia (y. enterocolitica) were analysed. only a few strains of these two bacterial genera possess a fimbrial antigen which proved to be identical in all tests. purified fimbriae are unstable in buffer solutions. they tend to form aggregates, patterns of which are between 240000 and 270000. submitted to solubility testing by various metho ... | 1979 | 377854 |
| measurement of immunoglobulin m (igm), igg, and iga antibodies against yersinia enterocolitica by enzyme-linked immunosorbent assay: persistence of serum antibodies during disease. | an enzyme-linked immunosorbent assay for the detection and quantitation of human immunoglobulin m (igm), igg, and iga antibodies against yersinia enterocolitica is described. formalinized or heat-treated bacteria were adsorbed onto specially designed microcuvettes, and antibodies were allowed to attach to the antigen-coated cuvettes. rabbit anti-human mu, anti-human gamma, and anti-human alpha antisera were allowed to react with human antibodies, and these class-specific anti-immunoglobulins wer ... | 1979 | 379030 |
| yersinia enterocolitica infections in children. | y. enterocolitica has been increasingly associated with a wide range of age-related clinical manifestations in children and adults, including febrile gastroenteritis, pseudoappendicitis, arthritis, sepsis, and focal suppurative disease. although definite patterns of incidence, prevalence, transmission, and pathophysiology are emerging, much remains to be explained. the alert clinician who notifies his clinical laboratory colleagues that special isolation techniques are required to recover this o ... | 1979 | 379783 |
| [gastrointestinal diseases caused by yersinia enterocolitica]. | | 1978 | 380050 |