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the effect of phenytoin on glutamate and gaba transport.phenytoin was observed to inhibit competitively the sodium dependent high affinity synaptosomal transport of both glutamate (glu) and gamma-aminobutyric acid (gaba) with ki values of 66 +/- 10 and 185 +/- 65 microm, respectively. this contrasted with a previous report that the uptakes of glu and gaba were enhanced by phenytoin. the degree of inhibition is dependent on the concentrations of the competing drug and substrate present. taking the therapeutic levels of phenytoin and the overall brain ...19862946971
an ultrastructural study of nerve cell bodies in the carotid body and common carotid artery of the domestic fowl. 19862948419
[morphologic studies following coronary thrombolysis and ptca].compared with those of other species human coronary arteries show a particularly marked diffuse thickening of the intima. superimposed on this diffuse thickening local sclerotic changes develop. in early stages they contain plenty of lipids which are mainly stored in modified smooth muscle cells, partly also in cells of monocytic origin. normally ruptures of arteriosclerotic plaques are responsible for thrombotic occlusions in extensive transmural myocardial infarctions. they are caused by ruptu ...19862950674
[malaria prevention. chemotherapy and immune prophylaxis. 3. immune response of infected organism. perspectives of malaria prevention]. 19862423092
humoral antibody response against bacteroides gingivalis-specific antigen recognized by monoclonal antibody in adult periodontal patients.an antigen recognized by monoclonal antibody specific for bacteroides gingivalis was purified in the presence of 0.5% (wt/vol) beta-octyl-glucoside by immunoadsorbent column chromatography. the purified antigen was homogeneous as judged by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (sds-page) and silver staining, and the pattern of sds-page agreed with that of immunoblotting. the molecule exhibited an apparent molecular weight of about 62,000 by sds-page. the antigen was sensitive ...19862426200
ribosomal ribonucleic acid gene restriction patterns as potential taxonomic tools.deoxyribonucleic acid from 41 different bacterial species (including gram-negative and gram-positive species) were cleaved by different restriction endonucleases, electrophoresed in agarose and transferred to nylon filters. the dna fragments carrying rrna genes (rdna) were localized by hybridization with a 32p-labelled escherichia coli 16 + 23s rrna probe. a pattern of hybridized fragments was obtained for each dna tested. within a bacterial species (defined as a dna hybridization group), one or ...19862446639
action of surfactants on porcine heart malate dehydrogenase isoenzymes and a simple method for the differential assay of these isoenzymes.the cationic surfactant, cetyl (hexadecyl) trimethylammonium bromide (ctab), completely inactivates porcine heart cytoplasmic malate dehydrogenase (l-malate:nad+ oxidoreductase, ec 1.1.1.37) at concentrations (of surfactant) which do not affect the activity of the mitochondrial isoenzyme. these concentrations are close to, or higher than, the critical micelle concentration of ctab. an increase in the ionic strength of the medium significantly retards the ctab-induced inactivation of the cytoplas ...19863768404
acute hypokalemic effect of gossypol.clinical trials had demonstrated that chronic ingestion of gossypol induced infertility in males. hypokalemia of various severities were reported in volunteers taking gossypol. the purpose of this study is to investigate the effects of acute gossypol infusion into alkalotic rats. plasma potassium concentration decreased from 4.08 to 2.87 mm after gossypol infusion with minimal change in urinary potassium excretion. the hypokalemic effect of gossypol was also observed in nephretomized rats. some ...19863768796
acute yersinia infections in man increase intestinal permeability for low-molecular weight polyethylene glycols (peg 400).the passive intestinal permeability of patients with acute diarrhoea was investigated with a liquid meal of oral rehydration fluid containing differently sized, low-molecular weight polyethylene glycols (peg 400). the recovery of test molecules was measured in 6 h specimens of urine. the subjects suffered from acute infections caused by yersinia bacteria accompanied by joint pains. they were investigated during the infection and at least 3-4 weeks later when they had recovered clinically. it was ...19863775268
acute yersinia infections in man increase intestinal permeability for low-molecular weight polyethylene glycols (peg 400).the passive intestinal permeability of patients with acute diarrhoea was investigated with a liquid meal of oral rehydration fluid containing differently sized, low-molecular weight polyethylene glycols (peg 400). the recovery of test molecules was measured in 6 h specimens of urine. the subjects suffered from acute infections caused by yersinia bacteria accompanied by joint pains. they were investigated during the infection and at least 3-4 weeks later when they had recovered clinically. it was ...19863775268
[changes in the structure of pulmonary blood vessels and bronchi in progressive bronchial stenosis]. 19863781307
[the delta virus: the cuckoo's egg in the nest of hepatitis b virus]. 19863785445
sem studies of acellular glomerular basement membrane in human diabetic glomerulopathy.previous transmission electron microscopic studies have demonstrated glomerular basement membrane (gbm) thickening and mesangial matrix (mm) expansion in chronic stages of diabetes. it is difficult, however, to achieve an appreciation of gbm surface features and distribution of mm in planar views. in the current study, autopsy human renal cortical tissue from patients with end-stage diabetic nephropathy were minced and rendered acellular with detergents prior to fixation, cryofracture, and prepa ...19863789417
microenvironment of the enzyme-bound nadh is different in lobster and pig muscle glyceraldehyde-3-phosphate dehydrogenase microcrystals.two possible consequences of crystal lattice formation were studied with glyceraldehyde-3-phosphate dehydrogenases isolated from lobster (palinurus vulgaris) and pig muscle: changes in the microenvironment of the nadh-binding site as detected by fluorescence polarization, and differences in the maximal activities of the microcrystalline enzymes as compared to those in solution. in solution practically no difference was found between the polarization values of the enzyme-nadh and the catalytic in ...19863789735
survival of erythroid burst-forming units and erythroid colony-forming units in canine bone marrow cells exposed in vitro to 1 mev neutron radiation or x rays.conditioned media (cm) from allogeneic stimulated cultures of light density cells (less than 1.08 g/cm3) from the peripheral blood of normal dogs were used to stimulate the growth of erythroid burst-forming units (bfu-e) in bone marrow from normal dogs. maximum numbers of bfu-e were obtained when 5% (vol/vol) 3 x cm and 2 u/ml erythropoietin were added to plasma clot cultures of bone marrow cells. in addition, the radiation sensitivity (d0 value) was determined for cfu-e and for bfu-e in bone ma ...19863797639
nitrogen conversion factors for the proteinaceous content of gums permitted as food additives.nitrogen conversion factors for gum arabic (acacia senegal (l.) willd.), gum tragacanth (asiatic astragalus spp.), gum karaya (sterculia spp.), guar gum (cyamopsis spp.), locust bean (carob) gum (ceratonia spp.), tara gum (caesalpinia spp.), and xanthan gum (xanthomonas campestris) have been calculated from data for the amino acid compositions of their proteinaceous components. the factors derived differ from the arbitrary values (5.7 or 6.25) at present specified by international regulatory aut ...19863743832
biochemistry of maternal milk in early lactation.the analysis of more than 550 human milk samples showed that triglycerides (accounting for 96-99 per cent of the total lipids) increased from 2 to 3.5 g/100 ml mainly during the first week postpartum and remained constant thereafter. in contrast, both cholesterol and vitamin e concentrations decreased from 35 to 20 mg/100 ml and from 1.7 to 0.30 mg/100 ml, respectively. the phospholipids remained constant (40 mg/100 ml). the fatty acid composition of total lipids showed remarkable changes. mid-c ...19863744886
diplostomum spathaceum (rud. 1819): effects of physical factors on the infection of rainbow trout (salmo gairdneri) by cercariae.the relationship between infection rates of rainbow trout (salmo gairdneri) by diplostomum spathaceum and cercarial concentration, water flow rate and temperature were investigated by means of controlled infections within a flume. a linear relationship was obtained between cercarial concentration and mean abundance of metacercariae/fish. a biphasic relationship occurred between flow rate and abundance of metacercariae. within the confines of the flume, it was possible to control the infection ra ...19863748615
[procedure for the biological testing of substances in the guinea pig subcutaneous test. i. the results of an improved semiquantitative assessment of the histological criteria].different materials were implanted into the subcutaneous connective tissue of guinea pigs to evaluate biotolerance by means of the tissue response. the investigations were carried out with reference materials and newly developed implant materials in short-term studies and in case control studies. the semiquantitative valuation standards lead mostly only to informing statements in the sense of a compatibility degree. alternative assertions are possible when comparing very different materials.19863751202
spinal and supraspinal mechanisms for morphine-pentobarbital antinociceptive interaction in relation to cardiac acceleration response in rats.in rat experiments, morphine-pentobarbital antinociceptive interaction affecting cardiac acceleration in response to somatic noxious stimulation was analyzed with the use of intrathecal and intracerebroventricular injections of morphine. cardiac acceleration response was induced by tail compression, and heart rate was monitored by electrocardiogram. pentobarbital, in a subanesthetic intravenous dose, antagonized the antinociceptive effect of morphine in relation to cardiac acceleration response ...19863754702
epidemiologic studies on possible health effects of intake of pyrolyzates of foods, with reference to mortality among japanese seventh-day adventists.to elucidate the effect of intake of mutagenic and/or carcinogenic pyrolysis products of proteins and amino acids on carcinogenesis in man, we have undertaken two epidemiologic cohort studies: one concerning the possible association of broiled fish consumption with cancer and the other concerning the cancer mortality among japanese seventh-day adventists. the main findings of these studies are described.19863757950
[effects of ambroxol on pulmonary surfactant--analysis of the fatty acid composition of phosphatidylcholine in the sputum and normal respiratory tract fluid in rabbits].the mechanism of action of secretagogic expectorants (ex., ambroxol) has not been clarified. recently, attention has been directed to the relationship of their action to pulmonary surfactants. in the present study, the fatty acid (fa) composition of phosphatidylcholine (pc), which is the main physiological surfactant, was investigated using sputum, respiratory tract fluid, mucin-like substance, lung washings and lung tissue of rabbits. effects of ambroxol (20 mg/kg, i.s.) on several parameters s ...19863758876
progesterone receptor synthesis and degradation in mcf-7 human breast cancer cells as studied by dense amino acid incorporation. evidence for a non-hormone binding receptor precursor.we have used the technique of density labeling of proteins by biosynthetic incorporation of 2h, 13c, 15n (dense) amino acids to study the synthesis and degradation rates of the progesterone receptor in mcf-7 human breast cancer cells. in cells grown in the absence of progestin, sucrose gradient shift analyses reveal that it takes 17 h for the normal density progesterone receptor levels to be reduced to half the initial value, whereas in the presence of 10 nm of the synthetic progestin [3h]r5020, ...19863759961
outer membrane proteins of fusobacterium nucleatum fev1.outer membrane enriched material from six strains of fusobacterium nucleatum was analysed by sds-page. the protein profiles of all the strains were dominated by proteins with molecular masses of about 40 kda, and a very high degree of homology in relation to apparent molecular masses was observed. in all strains except fev1, one of the most dominant proteins exhibited heat modifiable properties, having an apparent molecular mass of about 38 kda and 42 kda when heated in sds at 50 and 100 degrees ...19863760817
clinical, pathogenetic, and laboratory features of capnocytophaga infections.granulocytopenia and oral mucosal defects have been reported to be important predisposing factors to recently recognized cases of capnocytophaga septicemia. the authors call attention to an apparent preponderance of these cases in the pediatric age group and emphasize laboratory features which they have found helpful in the diagnosis of capnocytophaga infections. thirteen patients with capnocytophaga infections were seen during a seven-year period. seven of these patients had capnocytophaga bact ...19863766465
pericanalicular location of hepatocyte lysosomes and effects of fasting: a morphometric analysis.lysosomes constitute a small proportion of hepatocyte volume, but they play a key degradative role, particularly during catabolic states such as nutritional deprivation. our preliminary observations in hepatocytes suggested that fasting may alter the distribution of lysosomes, which are thought to congregate about the biliary canaliculus. the current study aimed to provide, in both fed and fasted rats, a quantitative morphometric analysis of lysosomes in the immediate pericanalicular and success ...19863957237
pericanalicular location of hepatocyte lysosomes and effects of fasting: a morphometric analysis.lysosomes constitute a small proportion of hepatocyte volume, but they play a key degradative role, particularly during catabolic states such as nutritional deprivation. our preliminary observations in hepatocytes suggested that fasting may alter the distribution of lysosomes, which are thought to congregate about the biliary canaliculus. the current study aimed to provide, in both fed and fasted rats, a quantitative morphometric analysis of lysosomes in the immediate pericanalicular and success ...19863957237
head-space gas-liquid chromatographic analysis for presumptive identification of bacteria in blood cultures.a total of 445 strains of common aerobic and anaerobic bacteria were analyzed for their volatile microbial metabolites by head-space gas-liquid chromatography. the bacteria were incubated for 24 or 48 h in blood-containing trypticase soy or lombard-dowell glucose broth before being analyzed by automatic head-space injection. from the chromatographic pattern obtained, the majority of klebsiella pneumoniae, enterobacter cloacae, serratia marcescens, escherichia coli, pseudomonas aeruginosa, morgan ...19863816354
[fertilization of human oocytes in vitro and embryo transplantation]. 19863817215
trichinella spiralis: newborn larval migration route in rats reexamined.the route by which trichinella spiralis newborn larvae migrate from the small intestine to striated muscle was studied in inbred ao and random-bred sprague-dawley rats. newborn larvae were quantitatively recovered from the thoracic duct lymph, peritoneal cavity, and hepatic portal vein blood during the course of a primary infection with 4000 muscle larvae. the total recovery of newborn larvae assessed in this manner was compared with the number of muscle larvae in control rats receiving the same ...19863943594
relation of animal size to convergence, divergence, and neuronal number in peripheral sympathetic pathways.the enormous range of animal size raises a fundamental problem: how do larger animals maintain adequate control of peripheral structures that are many times more massive and extensive than the homologous structures in smaller animals? to explore this question, we have determined neuronal number, the number of axons that innervate each neuron (convergence) and the number of neurons innervated by each axon (divergence), in a peripheral sympathetic pathway of several mammals (mouse, hamster, rat, g ...19863944617
pseudoephedrine-induced hypertensive emergency: treatment with labetalol.the case of a young man in hypertensive emergency following the ingestion of 840 mg of pseudoephedrine is reported. the hypertension, which peaked at 200/160 mm hg and was associated with severe headache and diaphoresis, responded expeditiously to two initial intravenous doses of labetalol. no rebound was observed following the administration of an additional dose in the intensive care unit, after which an uneventful one-day hospitalization ensued. the toxicity of pseudoephedrine is briefly revi ...19863947442
the influence of prolonged clofibrate treatment on the plasma drug concentration and liver nadp-linked enzymes activity.the clofibric acid (cpib) concentration in the rat blood plasma during 14 days of treatment with clofibrate and after cessation of the treatment, was measured and compared with the changes of some nadp-linked dehydrogenases activity. cpib rapidly accumulates in the plasma during the first two days of clofibrate administration reaching a maximum concentration of about 0.6 mm. then a linear decrease of the drug concentration was observed. the second day after clofibrate treatment had been complete ...19863949145
breast feeding as a determinant of severity in shigellosis. evidence for protection throughout the first three years of life in bangladeshi children.little is known about the effect of breast feeding upon the severity of illness due to specific diarrheal pathogens. using a systematically sampled and evaluated population of children aged less than 3 years, who attended a diarrheal disease hospital in bangladesh, the authors performed a case-control study that assessed whether breast feeding reduces the severity of illness in shigellosis. from 540 children presenting with shigellosis between 1980-1982, they created a group of cases (n = 53) wi ...19863953549
breast feeding as a determinant of severity in shigellosis. evidence for protection throughout the first three years of life in bangladeshi children.little is known about the effect of breast feeding upon the severity of illness due to specific diarrheal pathogens. using a systematically sampled and evaluated population of children aged less than 3 years, who attended a diarrheal disease hospital in bangladesh, the authors performed a case-control study that assessed whether breast feeding reduces the severity of illness in shigellosis. from 540 children presenting with shigellosis between 1980-1982, they created a group of cases (n = 53) wi ...19863953549
dna reactivity and in vitro cytotoxicity of the novel antitumor agent 1,5,2,4-dioxadithiepane-2,2,4,4-tetraoxide (nsc-348948) in human embryo cells.1,5,2,4-dioxadithiepane-2,2,4,4-tetraoxide (cyclic-soso) is structurally a novel synthetic compound but may functionally act as an alkylating agent. the effects of cyclic-soso on dna were studied in imr-90 and va-13 human embryo cells by means of dna alkaline elution analysis. in contrast to a number of bifunctional alkylating agents, cyclic-soso produced no dna-dna interstrand cross-links in either cell line, even at concentration which produced a greater than 3 log cell kill. at equimolar conc ...19863509975
a borrelia-specific monoclonal antibody binds to a flagellar epitope.in immunofluorescence assays monoclonal antibody h9724 recognized eight species of the spirochetal genus borrelia but not representatives of the genera treponema, leptospira, and spirochaeta. we examined the reactivity of h9724 against subcellular components of borrelia hermsii, an agent of relapsing fever, and b. burgdorferi, the cause of lyme disease. h9724 bound to isolated periplasmic flagella of the two borreliae. in western blots the antibody reacted with the predominant protein in flagell ...19863516878
[nosocomial infections caused by klebsiella pneumoniae in a neonatal unit and a unit for low-birth-weight infants]. 19863518962
attachment level changes in destructive periodontal diseases.the present communication attempts to summarize some of the features of attachment loss which are of interest to the clinician and the statistician analyzing data from clinical trials. these include the measurements employed to detect changes in attachment level, the nature of the destructive disease process and the effects of therapy on the attachment level measurements. although there are several difficulties associated with the attachment level measurement, at the present time it appears to b ...19863522651
[monoclonal antibodies to the antigens of human hela tumor cells].a panel of 6 hybridomas "xejima" producing monoclonal antibodies specific to hela cells is prepared. monoclonal antibodies do not bind to antigens of human diploid fibroblasts, human continuous b- and t-lymphocytes and animal cell lines. the specificity of monoclonal antibodies to cellular antigens of 5 hela-like cell lines and 6 human tumour cells lines, not contaminated with hela cells, is determined. antibody containing ascitic fluid and culture media of hybridomas xejima-3, -12, -13, and -22 ...19863526672
[monoclonal antibodies to the antigens of human hela tumor cells].a panel of 6 hybridomas "xejima" producing monoclonal antibodies specific to hela cells is prepared. monoclonal antibodies do not bind to antigens of human diploid fibroblasts, human continuous b- and t-lymphocytes and animal cell lines. the specificity of monoclonal antibodies to cellular antigens of 5 hela-like cell lines and 6 human tumour cells lines, not contaminated with hela cells, is determined. antibody containing ascitic fluid and culture media of hybridomas xejima-3, -12, -13, and -22 ...19863526672
[sensitivity of anaerobes to 8 antibiotics].we studied the susceptibility of 282 obligate anaerobes to 8 antibiotics. the strains were isolated from clinical specimens taken during 1983 and 1984. minimal inhibitory concentrations (mics) were determined using a microplate method for 245 strains and agar dilution for 33 bacteroides asaccharolyticus strains. tested strains were as follows: 85 bacteroides fragilis, 71 clostridium, 19 fusobacterium nucleatum, 35 peptostreptococcus, 39 bacteroides oralis and bacteroides bivius and 33 bacteroide ...19863534760
[origin, course and recession of an infectious disease, melioidosis, in temperate countries]. 19863535711
induction of bacterial mutations by aminopyrazoles, compounds which cause mammary cancer in rats.an aminopyrazole pd 71627 (5-amino-1,3-dimethyl-1h-pyrazol-4-yl) (2-fluorophenyl)methanone, and two amide derivatives, pd 108298, n-[4-(2-fluorobenzoyl)-1,3-dimethyl-1h-pyrazol-5-yl]-2- ([3-(2-methyl-1- piperidinyl)-propyl]amino) acetamide-(z)-2-butanedioate (1:2), and pd 109394, 2-(diethylamino)-n-[4-(2- fluorobenzoyl)-1,3-dimethyl-1h-pyrazol-5-yl]acetamide hydrochloride, proposed neuroleptic drugs, were found to elicit mammary adenocarcinomas in male rats after 13 weeks of treatment. these com ...19863536141
immunohistochemical study of the distribution of vasotocin reacting neurons in avian diencephalon.vasotocin (vt)- and neurophysin (nph)-containing neurons were immunocytochemically demonstrated in the diencephalon of the japanese quail (coturnix coturnix japonica), domestic fowl (gallus gallus), and pekin duck (anas platyrhynchos). in these three avian species, the immunoreactive cells are similarly distributed into three different diencephalic regions: lateral (l), periventricular (p), and dorsal diencephalic (dd). a different number of cell clusters can be easily identified in each region ...19863540108
immunohistochemical study of the distribution of vasotocin reacting neurons in avian diencephalon.vasotocin (vt)- and neurophysin (nph)-containing neurons were immunocytochemically demonstrated in the diencephalon of the japanese quail (coturnix coturnix japonica), domestic fowl (gallus gallus), and pekin duck (anas platyrhynchos). in these three avian species, the immunoreactive cells are similarly distributed into three different diencephalic regions: lateral (l), periventricular (p), and dorsal diencephalic (dd). a different number of cell clusters can be easily identified in each region ...19863540108
mechanisms of beta-lactam resistance in anaerobic bacteria.the known mechanisms of beta-lactam resistance in anaerobic bacteria involve production of beta-lactamases, alteration of penicillin-binding proteins, and blocking of the penetration of beta-lactams through the outer membranes. the most important factor in beta-lactam resistance is the production of beta-lactamase. beta-lactamases in various bacteroides, fusobacterium, and clostridium species have been described. beta-lactam resistance in bacteroides fragilis is most commonly mediated by the pro ...19863541135
isotope exchange at equilibrium studies with rat muscle adenylosuccinate synthetase.the kinetic mechanism of rat muscle adenylosuccinate synthetase was studied by determining the rates of isotope exchange at equilibrium. a random sequential binding mechanism was indicated for both the forward and reverse reactions. aspartate, adenylosuccinate, gdp, and pi were determined to bind in rapid equilibrium. gtp exchanges with both gdp and pi at the same rate, which is similar to the exchange rate of imp with adenylosuccinate. aspartate exchanges with adenylosuccinate at a higher rate ...19863542024
distribution of alpha-amylase activity in selected broiler tissues.in an examination of broiler alpha-amylase, significant variation in the serum enzyme activity level was noted, adult levels were lower than those of young chicks. analysis of alpha-amylase activity in various body fluids and tissues of 11-day and 7-week-old broilers indicated that the liver cannot be considered a source of alpha-amylase, although there was activity in both liver tissue and bile of 10 units/g wet weight and 35 units/100 ml, respectively. fluid from the oral cavity had low levels ...19863486408
absence of role of endothelium in the response of isolated porcine coronary arteries to acetylcholine.isolated precontracted arteries of various vascular beds relax in response to acetylcholine only if the endothelium is present. one explanation for this is that this drug stimulates the endothelial cells to release a vasodilator substance that in turn relaxes the underlying smooth muscle. to determine whether this mechanism is concerned also in the acetylcholine contraction of isolated porcine coronary arteries transverse strips of the extramural part of the left circumflex artery were used for ...19863719611
concentration-dependence of halothane metabolism in rabbits. 19863744878
dna probes for identification of clinically important bacteroides species.conventional procedures for identifying gram-negative anaerobes such as bacteroides spp. are cumbersome and time-consuming. a simpler approach would be to use dna probes to identify these organisms. since many different species of gram-negative anaerobes are isolated from clinical specimens, the most useful dna probes would be probes that identify a few clinically significant groups of anaerobes. to obtain such probes, we cloned hindiii-digested chromosomal dna from various bacteroides species a ...19863700617
[lithotripsy by ultrashort pulsation. experimental study in renal lithiasis in the dog].a lithotriptor delivering ultrashort shockwaves and designed for use under ultrasonographic guidance has recently been developed. immersion in water is unnecessary. the device was experimented in renal lithiasis in dogs. twenty-two animals were treated. in seven, who served as controls, the safety of shots delivered in particular to the lungs, liver, bones and kidneys was demonstrated. furthermore, no cardiac rhythm disorders were recorded. a human stone was implanted in 15 animals. the stone wa ...19863707073
local tolerance evaluation of intramuscular drug preparations. 19863709769
sensitization with fusobacterium nucleatum targets antibody-dependent cellular cytotoxicity to mammalian cells.incubation of mammalian tumor cells with either soluble of insoluble fractions (10 to 100 micrograms/ml) of fusobacterium nucleatum sensitizes them to the destructive activity of antibody-dependent cellular cytotoxicity (adcc) effector cells in the presence of anti-f. nucleatum antisera. all three types of adcc effector cells are capable of destroying f. nucleatum-sensitized target cells with varying degrees of effectiveness (lymphocytes much greater than monocytes greater than neutrophils). hyp ...19863710577
bvd virus infection and embryo transfer. 19863716157
dietary protein, enhancement of n-nitrosomethylurea-induced mammary carcinogenesis, and their effect on hormone regulation in rats.the effect of supplemental dietary protein (casein) fed with high fat diets was investigated using the n-nitrosomethylurea-induced mammary tumor model. isocaloric diets containing casein and corn oil at 19 and 15% (normal protein-high fat) or 33 and 15% (high protein-high fat) were fed ad libitum to sprague-dawley mother rats. female offspring continued on the diet. food consumption and growth curves were similar over the entire growth period. n-nitrosomethylurea (50 mg/kg body weight) or saline ...19863731097
3,3',5'-triiodothyronine inhibits iodothyronine-5'-deiodinating activity induced by 3,5,3'-triiodothyronine at equimolar concentrations in cultured fetal mouse liver.to investigate the rt3 effect on iodothyronine-5'-deiodinating activity (i-5'-da) in cultured fetal mouse liver, liver on the 19th day of gestation, in which little or no i-5'-da was detected and, therefore, rt3 was very stable, was cultured in medium containing thyroid hormone-depleted fetal calf serum supplemented with cortisol, insulin, and various concentrations of iodothyronines. after 4-15 days of culture, i-5'-da in the homogenate was assessed by the amount of iodide released from outer r ...19863732155
demonstration of 20k growth hormone in human plasma by gel electrophoretic-immunostaining-autoradiographic assay (geisaa).a variant of human growth hormone (hgh), in which 15 amino acids are missing (commonly referred to as 20k-hgh in contrast to the traditional form which is referred to as 22k-hgh), is known to exist in human pituitary glands. however, lack of a method to measure it in blood has hindered investigations of its physiopathology. we have applied a newly-developed technique called geisaa for its detection in small volumes of human plasma. the method is based upon the lower mr of the variant and its abi ...19863732988
the ionization behavior of bile acids in different aqueous environments.the ionization behavior of cholic acid, deoxycholic acid, and chenodeoxycholic acid in a variety of physiologically important molecular environments was studied using 13c nmr spectroscopy. the apparent pka of the carboxyl group was determined from titration curves obtained from the dependence of the carboxyl carbon chemical shift on ph. using 90% 13c isotopic substitution of the carboxyl carbon, a complete titration curve was obtained for cholate at a concentration below its critical micelle con ...19863734630
neural mechanisms of binocular vision. 19863303676
[studies of the mechanism of bacterial inactivation after administration of the preparation polchlor k].the purpose of the study was to determine the effect of chloroiodic complex compound with non-ionic surface active substances such as polchlor k on the kinetics of dying, activity of bacterial dehydrogenases and glucosidases as well as ultrastructure of bacterial cells on the example of escherichia coli and staphylococcus aureus. the evaluation of the kinetics of bacteria dying under the preparation activity revealed higher activity against e. coli than s. aureus. it was found that the preparati ...19863325944
infectious and sexually transmitted diseases: implications for dental public health.the acquired immunodeficiency syndrome (aids) has stimulated renewed attention toward infectious diseases and dental public health. currently, aids is defined as individuals with kaposi's sarcoma and/or pneumocystis carinii pneumonia and/or other life-threatening opportunistic infections (e.g., specific forms of tuberculosis or meningitis, candidal esophagitis), and associated immunosuppression that cannot be accounted for by another disease process and/or medications. as of january 1986, the ai ...19863457189
desulfuration of cysteine and methionine by fusobacterium nucleatum.fusobacterium nucleatum is a gram-negative anaerobic rod-shaped bacterium frequently isolated from human dental plaque. it is capable of the desulfuration of cysteine and methionine, resulting in the formation of sulfide and thiol volatiles, respectively. intact cells, as well as cell-free extracts produced by french pressure cell lysis of f. nucleatum, hydrolyzed radiolabeled cysteine to produce sulfide, pyruvic acid, and ammonia. the hydrolysis products of radiolabeled methionine were a volati ...19863458742
frequency distributions of periodontal attachment loss. clinical and microbiological features.the present investigation attempted to determine if the pattern of past periodontal destruction could be concisely summarized, and related to other clinical and microbiological parameters. 61 subjects between the ages of 12 and 61 years with destructive periodontal disease were evaluated at 6 sites per tooth for redness, plaque, suppuration, bleeding on probing, pocket depth, and attachment level. the frequency distribution of baseline attachment level measurements was computed for each individu ...19863462210
ethology in animal quarters.this contribution will be concerned with the interaction between environment, adaptability optimization and behaviour. animal laboratory experiments demand repeated measurements under identical environmental conditions. this is a prerequisite for the conventional statistical methodology used in order to clarify causal relationships involved in various biological functions. the understanding of biological functions is a necessary fundament for knowledge to prevent illness and to achieve a palliat ...19863469882
mucosal induction of systemic t cell tolerance by fusobacterium nucleatum.the present study was undertaken to determine if mucosal presentation of the periodontopathic bacterium fusobacterium nucleatum could induce systemic tolerance. two separate protocols of mucosal priming were carried out. in the first, mice were gastrically intubated on 2 consecutive days; this was repeated 5 days later. in the second protocol, mice were similarly primed but received another priming dose after a further 7 days. positive control mice were similarly primed with sheep red blood cell ...19863488389
extensive proliferation of mature connective-tissue type mast cells in vitro.there are two phenotypically distinct subpopulations of mast cells in rodents: connective tissue-type mast cells (ctmc) and mucosal mast cells (mmc). these populations differ in their location, cell size, staining characteristics, ultrastructure, mediator content and t-cell dependency. several investigators recently reported a further subclass of mast cells which arise when normal mouse haematopoietic cells are cultured with interleukin-3 (il-3); il-3 is an activity similar or identical to mast- ...19863491321
x-ray scattering and diffraction by wet gels of aa amyloid fibrils.systemic amyloidosis is characterized by the extracellular accumulation of protein fibrils with typical ultrastructural morphology. the persistence in vivo of amyloid fibrils, which is responsible for their serious clinical effects, has been thought to reflect the particular, specific conformation of peptide chains constituting the fibrils. on the basis of earlier structural studies this conformation is generally considered to be almost exclusively anti-parallel beta-sheets. we have re-examined ...19863561252
address given at a diploma ceremony at boksburg-benoni hospital on 20 june 1979. patient-response to hospitalisation. 1986260906
inhibition of cytokinesis in friend leukemia cells by membrane mobility agents.treatment of a line of friend leukemia cells with a dispersion of the membrane mobility agent, a2c, yields cells that undergo successive nuclear divisions without cytokinesis, resulting eventually in cells with as many as 30 nuclei. neither the dna replication rate of the cells nor the generation time is different after treatment; in addition, the multiple nuclei divide synchronously, and the chromosome number corresponds to the number of nuclei in the cell. inhibition of cytokinesis is not obse ...1986268639
[children's conditions in the hospital. children's matters are matter of our essential future resources]. 1987260409
the ohio nursing situation: a report commissioned by the ona board of directors. 1987259967
[action of a weak alternating magnetic field on oxygen transport in the body in nonspecific inflammatory lung diseases]. 19873562070
[action of a weak alternating magnetic field on oxygen transport in the body in nonspecific inflammatory lung diseases]. 19873562070
2,3,7,8-tetrachlorodibenzo-p-dioxin-induced lipid peroxidation in hepatic and extrahepatic tissues of male and female rats. 19873566341
2,3,7,8-tetrachlorodibenzo-p-dioxin-induced lipid peroxidation in hepatic and extrahepatic tissues of male and female rats. 19873566341
effect of hypothermia on intestinal adaptation and carcinogenesis in the rat.postoperative hyperplasia enhances experimental intestinal carcinogenesis, but the effects of nonsurgical adaptation are uncertain. the tropic and tumour-promoting potentials of moderate hypothermia were tested in two groups of male sprague-dawley rats housed at 10 degrees c for 30 weeks. one group (n = 10) received a 6-week course of azoxymethane (total dose 90 mg kg-1). the second group (n = 7) acted as hypothermic controls. another 2 groups maintained at 22 degrees c received azoxymethane (n ...19873567060
abnormal calcium handling by platelets in thrombotic disorders.this study presents a quantitative comparison of the free cytoplasmic calcium concentration ([ca2+]cyt) and the free concentration in the lumen of the dense tubules of the human platelet. the former was measured by the fluorescence of the high affinity indicator quin2 and latter by the fluorescence of chlorotetracycline (ctc). the ctc technique monitors calcium-ctc complex accumulation in the lumen of dense tubules and mitochondria when washed platelets were incubated in 2 mm ca2+. resting cytop ...19873581444
bacteria-phagocyte interactions: fusobacterium-induced secretion of a neutrophil self-regulatory factor.direct interaction between fusobacterium nucleatum and human neutrophils resulted in the secretion of a neutrophil self-regulatory factor(s). the secretion of this factor was bacteria specific, and depended on the integrity of the bacteria cell surface. factor secretion occurred within 15 min of bacteria--neutrophil interaction. pre-treatment of neutrophils with cytochalasin b but not sodium fluoride inhibited factor secretion. the factor was sensitive to trypsin and heat treatment. ultrafiltrat ...19873583320
enrichment of subgingival microflora on human serum leading to accumulation of bacteroides species, peptostreptococci and fusobacteria.this study was undertaken to identify ecological factors that favour opportunistic pathogenic species in the subgingival microflora. in a first approach, human serum as a substitute for gingival exudate, was used for batch-wise enrichment of subgingival plaque. the microflora resulting after 5-6 enrichment steps consisted of black-pigmented and non-black-pigmented bacteroides species, peptostreptococcus micros and fusobacterium nucleatum as the main organisms. it is noted that the same group of ...19873674857
direct modulation of human neutrophil adherence by coaggregating periodontopathic bacteria.direct interaction between fusobacterium nucleatum and pmns produced consistent enhancement of pmn adherence. in contrast, consistent suppression of pmn adherence was observed after direct interactions between pmns and bacteroides gingivalis or actinomyces viscosus. the modulatory effects of these periodontopathic bacteria on pmn function could be seen as early as 2 min after interaction. the effects were abrogated by alterations of bacterial structural integrity with heat, formalin or ultrasoni ...19873583410
[proof of illegitimacy and identifying the true father after 70 years].a man born during the first world war doubted his legitimacy and believed his true father to be his mother's (since deceased) cohabitant. his and his sister's findings in less than or equal to 24 blood group systems produced a probability of sibship of w = 33%. the probability of half-sibship between the proband and two of the cohabitant's legitimate children was w = 82%, between him and two other children w = 70%, and between him and yet another two children w = 73%. these values raised doubts ...19873591019
renal handling of thyroxine, 3,5,3'- and 3,3',5'-triiodothyronine, 3,3'- and 3',5'-diiodothyronine in man.the 24-h urinary excretion and renal clearance of thyroxine (t4), 3,5,3'-triiodothyronine (t3), 3,3',5'-triiodothyronine (rt3), 3,3'-diiodothyronine (3,3'-t2), and 3',5'-diiodothyronine (3',5'-t2) were measured in 17 healthy subjects. the median urinary excretion was (pmol/24h) t4: 1242, t3: 828, rt3: 12.9, 3,3'-t2: 331, and 3',5'-t2: 5.8. the corresponding renal clearances were in median (ml/min) t4: 31, t3: 133, rt3: 15, 3,3'-t2: 683, and 3',5'-t2: 4.5. the clearances differed mutually (p less ...19873591221
renal handling of thyroxine, 3,5,3'- and 3,3',5'-triiodothyronine, 3,3'- and 3',5'-diiodothyronine in man.the 24-h urinary excretion and renal clearance of thyroxine (t4), 3,5,3'-triiodothyronine (t3), 3,3',5'-triiodothyronine (rt3), 3,3'-diiodothyronine (3,3'-t2), and 3',5'-diiodothyronine (3',5'-t2) were measured in 17 healthy subjects. the median urinary excretion was (pmol/24h) t4: 1242, t3: 828, rt3: 12.9, 3,3'-t2: 331, and 3',5'-t2: 5.8. the corresponding renal clearances were in median (ml/min) t4: 31, t3: 133, rt3: 15, 3,3'-t2: 683, and 3',5'-t2: 4.5. the clearances differed mutually (p less ...19873591221
the effects of stimulus area and adaptation temperature on warm and heat pain thresholds in man.the effect of stimulus area and adaptation temperature on warm and heat pain threshold were studied in healthy human subjects using a contact thermal stimulator. the stimulus area was varied in the range of 1.3 to 11.8 cm. both the warm and heat pain thresholds decreased with increasing stimulus surface. heat pain and warm thresholds were equally affected by the stimulus surface. the adapting temperature was varied in the range 25-35 degrees c, and warm thresholds were elevated with increasing a ...19873596930
[studies on dynamic posture in normal persons and scoliotic patients].dynamic posture of 127 normal males, 144 normal females and 68 scoliotic patients was studied by a system utilizing moiré topography, a video recorder and apple ii microcomputer system. the normal group was divided into five subgroups by age and the scoliotic group into three subgroups according to the cobb angle. the following results were obtained: the clockwise rotation during on-the-spot marching was larger in early juvenile females. the rotation movement during on-the-spot marching was almo ...19873598288
does syphilis facilitate sexual acquisition of hiv? 19873599340
factors affecting antimicrobial susceptibility of fusobacterium species.fifteen clinical isolates of fusobacterium species were studied to determine their quality of growth on five agar media, their susceptibility to penicillin, cephalothin, cefoxitin, and cefotaxime, the inoculum effect, and the presence of l forms and beta-lactamase. wilkins-chalgren agar supported confluent growth best, but fusobacterium nucleatum exhibited poor growth on all agar media. most isolates exhibited poor reproducibility of mic results with repeated agar dilution testing. however, most ...19873494743
study of the growth factors for the mammary gland: epidermal growth factor and mesenchyme-derived growth factor.the physiological importance of egf in the development of the mouse mammary gland during pregnancy and in spontaneous mammary tumorigenesis has been documented by a series of experimental results presented herein. in our study, we have taken a variety of experimental approaches including radioimmunoassay of egf in the submandibular gland and plasma, mammary gland organ/cell culture, egf receptor assay, sialoadenectomy and treatment with egf and egf antibodies to assess the role of egf in the mam ...19873498710
intrathoracic mycotic aneurysm detected by indium-111 labelled autologous neutrophils with single photon emission computed tomography. 19873499001
activity of a partially purified human bcgf on murine assays for b-cell stimulatory factors. i. bcgf ii-like activity of human bcgf.to further characterize a human b-cell growth factor (bcgf) produced by phytohemagglutinin (pha) p-stimulated peripheral blood t cells, a partially purified preparation of this material was tested in a number of murine assays for b-cell stimulatory factors (bsf). human bcgf lacked murine bsf-1 activity as assessed via the induction of polyclonal proliferation of anti-igm-stimulated murine b cells; however, this material consistently augmented the proliferative response of murine b cells to anti- ...19873499989
effect of treatment with 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine/mptp/on mouse substantia nigra in vitro. fluorescence and electron microscopic examination. 19873501590
a penicillinase-producing fusobacterium nucleatum strain isolated from blood culture. 19873501981
comparative gene mapping: a valuable new tool for mammalian developmental studies.technological advances in the 1970s encouraged the mapping of homologous gene loci in different mammalian species, including mouse and man. one hundred eighty-five homologous loci have now been mapped in these two species. conservation of linkage is sufficient to identify substantial segments of the two genomes that have been left intact since their divergence from a common ancestor. the recognition of these conserved segments allows experimental manipulation of mouse chromosomes or chromosomal ...19873502975
[adherence of fusobacterium nucleatum to human cells]. 19873505564
certain bacterial species and morphotypes in localized juvenile periodontitis and in matched controls.subgingival microflora in localized juvenile periodontitis (ljp) was examined by culture of certain bacterial species and by direct dark-field microscopy in affected and unaffected periodontal pockets of 11 patients and in their age- and sex-matched controls. only actinobacillus actinomycetemcomitans (a.a.) correlated to periodontal destruction and occurred most frequently at the affected ljp sites. a.a., bacteroides intermedius and fusobacterium nucleatum were isolated in proportions greater th ...19873473219
a clinical, demographic and microbiologic study of anug patients in an urban dental school.35 anug patients were examined and compared clinically and demographically. plaque removed from ulcerated sites in 20 patients was cultured using quantitative anaerobic procedures and examined by electron and darkfield microscopy. patients were classified as having anug when presenting with ulceration and necrosis of interproximal papillae, pain and bleeding. the clinical symptoms of fetid odor, pseudomembrane formation, lymphadenopathy and elevated body temperature were present in 97%, 85%, 61% ...19873476504
effect of periodontal therapy on specific antibody responses to suspected periodontopathogens.the effects of clinically successful periodontal therapy were studied in juvenile periodontitis (jp) and rapidly progressive periodontitis (rp) patients and compared with periodontally healthy subjects (hs). serum samples were obtained in 35 hs prior to the study and in 12 of these subjects 3-4 years later. serum samples were obtained from 50 jp patients initially, 9 subjects immediately following surgical therapy and 29 of these subjects 3-4 years later. rp patients provided 46 initial serum sa ...19873476519
structural determinants of activity of chlorhexidine and alkyl bisbiguanides against the human oral flora.we assayed chlorhexidine and a series of its analogues, in which the chlorophenyl terminal substituents were replaced with alkyl chains, for their in vitro antimicrobial activity against the gram-negative and gram-positive oral bacteria. changes in antimicrobial activity were correlated with changes in agent structure for identification of structural criteria which may be important in the optimization of agent activity. chlorhexidine showed substantial antimicrobial activity against the gram-neg ...19873476581
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