| characterization of the adenosinetriphosphatase and calsequestrin isolated from sarcoplasmic reticulum of normal and dystrophic chickens. | the ca2+ +mg2+-dependent adenosinetriphosphatase (ec 3.6.1.3) and calsequestrin have been isolated from the sarcoplasmic reticulum of normal and dystrophic chicken muscle. the adenosinetriphosphatases, isolated from the two lines of chickens were identical in molecular weight, enzyme activity and in ca2+ +mg2+-dependence. calsequestrins isolated from the two lines bound identical amounts of calcium. there were no differences in the ca2+ transport functions of the sarcoplasmic reticulum membrane ... | 1976 | 133752 |
| the measurement of 3beta-hydroxysteroid dehydrogenase in ovaries of fowls (gallus domesticus). | | 1976 | 133850 |
| accumulation and excretion of certain organochlorine insecticides in broiler breeder hens. | | 1976 | 134050 |
| a transmissible plasmid determining lactose fermentation and multiple antibiotic resistance in a strain of klebsiella pneumoniae. | in a wild strain of klebsiella pneumoniae the plasmid that determined lactose fermentation also determined resistance to chloramphenicol, ampicillin, tetracyclines, streptomycin, spectinomycin, and sulphonamides. the plasmid transferred at a very low rate to escherichia coli k12 and salmonella typhi. by implanting other transfer factors in the strain the rate of transfer and the recipient range were increased. plasmid transfer from the modified strain to salm. typhimurium and salm. gallinarum wa ... | 1976 | 134162 |
| [evaluation of the etiopathogenic significance of e. coli serotypes 0 1--0 25]. | a study was carried out on the incidence of e. coli serogroups 01--025, under different clinical and epidemiologic conditions, with a view to evaluating their etiopathogenic significance and the efficiency of immunofluoresence as a rapid laboratory method of diagnosis. a total number of 1542 samples were collected from humans (1075 feces samples and 467 urine samples from cases of urinary infection), and 387 from animals. the samples were collected from cases of enteritis and from healthy childr ... | 1976 | 134446 |
| [outbreak of typhoid among laboratory animals]. | | 1976 | 134496 |
| a histoautoradiographic study of the localization of antigen and specific antibodies in the rabbit spleen. i. comparison of the primary and secondary immune response. | the localization of antigen (chicken serum albumin) and specific antibodies in sections from the spleens of rabbits after primary and secondary immunization was studied by means of histoautoradiography. after primary immunization, both antigen and antibodies were demonstrated in the lymphoid follicles consistently between 3 and 42 days after injection. antigen was detected in addition in the marginal zone on the 5th day, and antibody-forming cells in the marginal zone and periarteriolar lymphocy ... | 1976 | 134527 |
| [structure-reactivity relationships and delayed neurotoxicity of organophosphorus compounds]. | a correlation has been found between the reactivity in the alkaline hydrolysis reaction of a new series of organophosphates and their ability or disability to produce the clinical manifestations of delayed neurotoxicity in hen. at a dose of 1000 mg/kg only compounds exceeding a lower limit of reactivity (about 6x10-2 m-1s-1) are active. | 1976 | 134586 |
| 2,3,7,8-tetrachlorodibenzo-p-dioxin: environmental contaminant and molecular probe. | the chlorinated dibenzo-p-dioxins and dibenzofurans are formed as trace contaminants during the synthesis of a number of commercially important chemicals. the prototype compound of this group, 2,3,7,8-tetrachlorodibenzo-p-dioxin (tcdd), is one of the most potent low molecular weight toxins and teratogens known, and its inadvertent dispersion in the environment has caused concern about the potential hazard to human health. in studying the biochemical effects of tcdd, it was found to be extraordin ... | 1976 | 134910 |
| circulating factors controlling cell proliferation. | dipolid human fibroblast-rich tissues contain a macromolecule with a molecular weight between 30,000 and 50,000 daltons which will inhibit the proliferation of fibroblasts in the g1 phase of the cell cycle (i.e., inhibit both 3h-thymidine uptake as well as the normal increase in cell number). the inhibitor is destroyed by trypsin but not by ribonuclease or deoxyribonuclease, and it is thermolabile. it has an acid iep. it is not cytotoxic, and its inhibitory activity appears to be completely reve ... | 1976 | 135264 |
| diphenylhydantoin facilitation of labile, protein-independent memory. | diphenylhydantoin (dph 10(-4)m) administered subcutaneously to chicks 5 min after a one-trial passive avoidance learning task successfully counteracted amnesia induced by pretreatment 5 min before learning with ouabain or cycloheximide (cxm). biochemical assays confirmed that in chick forebrain homogenate dph at concentrations of 1 and 5 x 10(-4)m enhanced na+/k+ atp'ase activity. since both dph and ouabain inhibit post-tetanic potentiation, the results support the hypothesis of an initial labil ... | 1976 | 135601 |
| [influence of anti-lactate dehydrogenase m antibodies on the proliferation of kb tumor cells]. | the igg antilactate-dehydrogenase m inhibits the corresponding isozyme in the kb tumoral cells cultivated in vitro. it has an inhibitory action on the prliferation of these cells. these data corroborate those obtained previously with chemical inhibitors of ldh-m. | 1976 | 135609 |
| [development of tectum-striatum and striatum-tectum connections in the chick]. | in the chick, polyphasic evoked responses displaying a first negative component have been registered in the superficial part of the "wulst" after stimulation in the depth of the contra or ipsilateral optic tectum, as early as the first hours following hatching. moreover, responses on the surface of the tectum have been elicited by contra or ipsilateral stimulation of the wulst. latencies of both responses decrease markedly with increasing age but, in the whole, ipsilateral responses remain more ... | 1976 | 135613 |
| the relation between atpase activity and light chains of myosin in developing, adult and denervated muscles of several animals species. | ca2+atpase activity and light chains of myosin, fractionated by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, in developing, adult and denervated fast, slow and cardiac muscles of the rat, guinea-pig, cat, rabbit and chick were studied. it has been shown that in normal adult muscles the electrophoretic pattern of light chains of myosin reflects the myosin atpase activity only when muscles from the same animal species are compared. in homologous muscles from adult animals differing i ... | 1976 | 135984 |
| comparative studies on amino and thiol groups in myosins from different sources. | myosins from rabbit white and red skeletal, rabbit heart, fish skeletal and chicken gizzard muscles, as well as from human platelets were subjected to trinitrophenylation by trinitrobenzene sulfonate and alkylation by n-ethylmeleimide which affected their amino and thiol groups, respectively. the blocking of amino groups was carried out in the presence or in the absence of mg-adp and was followed both spectrophotometrically and enzymatically. essential amino groups, whose modification throughly ... | 1976 | 136275 |
| laparoscopic techniques for biomedical research. | the techniques used for laparoscopic observation of reproductive systems in 23 species are described. the application of various techniques to biomedical research is examined, and the methods used for laparoscopic follicular aspiration and injection, as well as the techniques for uterine flushing collection from swine and nonhuman primates, and oviductal deposition of test solutions are described. | 1976 | 136515 |
| polypeptides of the nuclear envelope. | | 1976 | 136984 |
| histochemical sub-types of three fibre-types of avian skeletal muscle. | the soleus muscle of adult chicken was studied histochemically. succinic dehydrogenase (sdh) and myofibrillar atpase reactions, with or without preincubation in k2-edta salt, were compared in serial frozen sections. based upon the distributions of the above reactions, the three major fibre types distinguished were "type i red", "type ii red" and "type ii white". on the basis of non preincubated atpase reaction alone two sub-types of type i red fibres could be distinguished. however, following pr ... | 1976 | 137225 |
| regulatory protein of bovine tracheal smooth muscle. | myosin b exhibiting ca2+ sensitivity in superprecipitation and mg-atpase [ec 3.6.1.3] activity was extracted from tracheal smooth muscle. repeated washing with 2mm kcl and 1 mm nahco3 resulted in the loss of these activities. however, on addition of native tropomyosin, the myosin b regained its original properties. native tropomyosin is the regulatory system in this smooth muscle. | 1976 | 137235 |
| [ecology of syngamosis in a large scale farming area]. | within recent 20 years, czechoslovak agriculture has undergone considerable changes due to the introduction of largescale farming. our contribution presents the results of studies on chickens (gallus gallus f. dom.) reared traditionally on runs in an area contaminated with the eggs of syngamus trachea distributed with pheasant faeces. in addition to postmortem examination of 336 chicken tracheae, their faeces collected for one year from the runs were examined, but syngamosis was not found. studi ... | 1976 | 137683 |
| the developmental histochemistry of the chicken visual cells. | | 1976 | 138125 |
| comparative temperature dependence of (na+ + k+)-atpase. | the temperature dependence of (na+ + k+)-atpase was measured, utilizing preparations of enzyme from heat and kidney of rats, hamsters, guinea pigs, ground squirrels, turtles, chickens, and ducks. the two hibernating species, hamsters and ground squirrels, were studied awake at normothermia and hibernating at 4 degrees c. the results for every species except the turtles showed the same temperature dependence established for (na++k+)-atpase from rabbit kidney with a quasi-linear dependence above 1 ... | 1976 | 138144 |
| labeling of animal cells with fluorescent dansyl cerebroside. | a dansyl (diaminoaphthalenesulfonyl)-derivative of cerebroside was prepared which could be effectively incorporated into the plasma membranes of tissue culture cells and erythrocytes. the cells which had assimilated the glycolipid fluoreced intensely and could be observed under a fluorescent microscope. cells were initially labeled rather homogeneously over the whole surface. with longer incubation time organization of the fluorescent glycolipid took place and patches of the lipid in the membran ... | 1976 | 138295 |
| cell proliferation stimulating factors in the supernatant of embryos and adult muscles of chickens of the same strain. | stimulating factors of cell proliferation were extracted from the supernatant of embryos and adult muscles of chickens of the same strain. the stimulating activity and physicochemical properties of these factors were altered after embryological development. the embryonic factors were about 3.5 times more effective than the muscular factors. these factors might be useful in analysis of the regulatory mechanisms of cell proliferation. | 1976 | 138334 |
| the involvement of sarcotubular membranes in genetic muscular dystrophy. | microsomal preparations from breast muscle of normal and dystrophic chickens are characterized with regard to ultrastructural features, protein composition, ca2+ transport and atpase activity. dystrophic muscle yields a greater microsomal dry weight, with a reduced protein to lipid ratio. this is related to the presence of a considerable number of low density microsomes, in addition to seemingly normal microsomes. the low density microsomes display a reduced number of protein particles on freeze ... | 1977 | 138444 |
| biochemical actions of sympathomimetic drugs which overcome cycloheximide-induced amnesia. | earlier investigations of sympathomimetic drugs overcoming the amnesic action of cycloheximide (cxm) in day-old chickens were extended to biochemical studies in vitro. the effects of amphetamine, norepinephrine, alpha and beta noradrenergic stimulants and receptor blockers on na+/k+ atp'ase activity in total homogenate of chicken forebrain were investigated. norepinephrine and the beta stimulant, isoprenaline significantly stimulated the activity of this enzyme, while the beta blocker, propranol ... | 1976 | 138858 |
| [development and function of endocrine cells in the proventriculus of the chicken (author's transl)]. | an argyrophil endocrine cell type with typical intraepithelial development is seen initially on the 8th day of incubation in the epithelium of the main lumen of the chicken-proventriculus. during the embryonic period, rapid development of these cells can be observed with a quantitative maximum on the 13th day of incubation. at this time increased digestive efficiency is necessary for the chicken embryo with the start of gastric secretion combined with the first swallowing of albumen. there is a ... | 1977 | 139019 |
| the effect of temperature change on the kinetic behaviour of yeast phosphofructokinase. | yeast phosphofructokinase does not exhibit any cold sensitivity. the kinetic properties of the enzyme have been investigated in the range between 10 degrees c and 30 degrees c in dependence on fructose 6-phosphate and atp. although a significant increase in the enzyme activity with rising temperature does not occur, the shape of the atp velocity curves is not markedly altered. with increasing concentrations of fructose-6-phosphate the efficiency of temperature on the catalytic process increases, ... | 1976 | 139067 |
| ca-linked phosphorylation of a light chain of vertebrate smooth-muscle myosin. | in vertebrate smooth muscle actomyosin and myofibrils a myosin light chain of molecular weight about 20,000 becomes phosphorylated at the same ca2+ concentration as required to stimulate the actin-activated atpase activity of myosin. further, the degree of phosphorylation in the preparations as well as in various reconstituted actomyosins is proportional to their measured ca2+ sensitivity. the phosphorylation process is very rapid and is essentially completed before the rise in atpase activity. ... | 1977 | 139309 |
| synaptosomal adenosine triphosphatase (atpase) inhibition by organophosphates. | chicken spinal cord adenosine triphosphatases (both na+, k+ stimulated and ouabain insensitive) were inhibited by tri-o-tolyl phosphate (totp, a neurotoxic organophosphate which is not a cholinesterase inhibitor) and mevinphos (a non-neurotoxic compound but inhibitor of cholinesterases). the inhibition was concentration and time dependent, with an initial rapid drop in activity followed by a gradual exponential decline. | 1976 | 139320 |
| essential factor of gizzard "troponin" fraction. a new type of regulatory protein. | the physiological activity of gizzard "troponin" fraction ((1975) j. biochem. 78, 859) was shown to be due to the 80,000 dalton component. | 1977 | 139404 |
| effects of lymphocytes from marek's disease-infected chickens on mitogen responses of syngeneic normal chicken spleen cells. | pha responses have been measured in lymphoid cell cultures prepared by mixing normal chicken spleen cells with spleen or thymus cells from syngeneic chickens infected with the oncogenic herpesvirus mdv. results of these studies may be summarized as follows: 1) spleen cells from mdv-infected chickens with visceral lymphomas inhibit the pha response of normal spleen cells possibly by release of soluble inhibitory factors in response to the mitogen; 2) lymphoid cells from asymptomatic mdv-infected ... | 1977 | 139449 |
| studies on anticoccidial agents. 11. synthesis and anticoccidial activity of nitropyridinecarboxamides and derivatives. | of the nine nitropyridinecarboxamides, which are isomers of 5-nitronicotinamide, a potent anticoccidial agent, 2-nitropyridine-3, -4, -5-, or 6-carboxamides and 3-nitropyridine-4- or 6-carboxamides were prepared from the corresponding acids via the esters of the acid chlorides. 3-nitropyridine-2-carboxamide was obtained from 2-methyl-3-nitropyridine by oxidation with seo2, oximation, dehydration with ac2o, and hydrolysis with h2so4. 4-nitropyridine-2-carboxamide was prepared from 2-cyano-4-nitro ... | 1977 | 139475 |
| [feeding of mass species of the mosquitoes of the culicidae family in abkhazia on warm-blooded and cold-blooded animals under experimental conditions]. | | 1976 | 139541 |
| [economic effectiveness of antibiotics in pullorum disease-fowl typhoid in poultry]. | | 1976 | 139739 |
| [helminthological evaluation of specialized poultry raising farms]. | | 1976 | 139742 |
| the structure of lipids and proteins studied by attenuated total reflection (atr) infrared spectroscopy. ii. oriented layers of a homologous series: phosphatidylethanolamine to phosphatidylcholine. | polarized infrared atr spectra of dry oriented multilayers of dipalmitoylphosphatidylethanolamine, sheep brain phosphatidylethanolamine, dipalmitoylphosphatidyl-n-methylethanolamine, dipalmitoylphosphatidyl-n-n-dimethylethanolamine, dipalmitoylphosphatidylcholine and egg phosphatidylcholine are reported. structural features of hydrocarbon chains and polar headgroups are discussed. the average deviation fo hydrocarbon chains from the normal to the plane of the bilayer was found to be 20-30 degree ... | 1977 | 139776 |
| comparative morphological and histochemical aspects of selected arteries in the chicken and rat. | morphologic and histochemical characteristics of selected portions of normal arteries from two species known to differ in susceptibility to vascular disease were examined. arteries were classified as predominantly elastic, muscular or complex. species differences in the structural organization of the abdominal aortic segment were observed. arterial mucopoly-saccharides were stained more intensely in the tunica intima and media of chicken vessels than within those of the rat, and tended to be mos ... | 1977 | 139817 |
| filamin, a new high-molecular-weight protein found in smooth muscle and nonmuscle cells. purification and properties of chicken gizzard filamin. | filamin, a major high-molecular-weight protein of chicken gizzard smooth muscle, was purified to homogeneity by salt extraction, ammonium sulfate precipitation, agarose gel filtration, and diethylaminoethylcellulose ion-exchange chromatography. purified filamin is an asymmetric oligomer consisting of two large subunits of identical size (2 x 250 000 daltons) as indicated by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, chemical cross-linking, sedimentation analysis (s10, wo = 10s) a ... | 1977 | 139917 |
| [ultrastructural study of the adsorption of lymphocytes on cells infected by vacinnia virus]. | adsorption of chicken lymphocytes to hep-2 cells infected with vaccinia virus was found to occur by two processes. in one, the lymphocytes were attached to the microvilli of the hep-2 cells, and the lymphocyte and host cell were separated at a distance of up to 0.6 micron. in the other, there was direct and close binding of the lymphocytes to the infected hep-2 cell. the lymphocyte and hep-2 cell were separated by an apparent gap approximately 10 to 20 nm in width. | 1976 | 139987 |
| virulence-associated acquisition of iron in mammalian serum by escherichia coli. | effects of iron on the growth of avirulent and virulent strains of escherichia coli were tested in mice and in mammalian sera. infection of the animals with iron increased mortality rates in mice infected with the avirulent strain to levels found in mice infected with the virulent strain. in vitro experiments showed that bacteria deprived of iron in bovine or human sera or milk or in chicken egg white stopped miltiplication and died in a very short time. these antibacterial effects were neutrali ... | 1977 | 140199 |
| bacteriophage typing of chicken staphylococci by adapted phages. | | 1977 | 140258 |
| functional transformation of fast posterior latissimus dorsi muscle by "slow" nerve implanted in newly hatched chickens. | 1. contraction properties and the activity of ca2+ - atpase were investigated 2 and 5 to 6 1/2 months after transposition of the fast posterior latissimus dorsi muscle (pld) to the other side in newly hatched chickens. at the same time the muscle was cross-innervated by the nerve originally supplying the slow anterior latissimus dorsi muscle (ald). 2. the mean isometric twitch contraction time of these transposed, cross-innervated pld muscles in the 2-month-old and 5 to 6 1/2-month-old groups wa ... | 1977 | 140382 |
| the structure of the lachrymal glands of the domestic fowl and of the duck. | the histology of the lachrymal glands of the duck and fowl is similar. in both birds the gland is a compound tubulo-acinar structure, lobulated and invested by a thin connective tissue capsule. foci of lymphocytes, but few plasma cells, are found in the glands. moderately acidic mucosubstances predominate in the gland of the fowl whereas sialomucins are found in that of the duck. neutral lipids were detected only in the gland of the fowl. | 1976 | 140453 |
| plural growth factors in the supernatant of embryos and adult muscles of chickens. | an attempt was made to isolate the cell proliferation stimulation factors in the supernatant of embryo carcases and adult muscles of chickens. evidence was obtained for the presence of at least two or more stimulating factors in both the embryonic and adult muscular supernatants. these factors did not require a supplement of sera or other supporting agents. furthermore, the use of the salting-out method with ammonium sulfate revealed two or more growth stimulants in the supernatant of chick cell ... | 1977 | 140593 |
| effect of piperidines and fire ant venom on atpase activities from brain homogenate fractions and characterization of na+-k+ atpase inhibition. | | 1977 | 140686 |
| purification and characterization of an extracellular atpase from oviductal secretions. | oviductal secretions include an atpase (ec 3.6.1.3) that is transferred from the outer surface of the secretory cells to the surface of the ovulated oocyte. the enzyme has been purified and is a highly labile, very high molecular weight lipoprotein complex (greater than 4-10(6)). it consists of 47% protein and 53% lipid. lipid composition is limited to phosphatidylcholine, phosphatidylethanolamine and sphingomyelin. the basic protein subunit has a molecular weight of 170 000. the enzyme exhibits ... | 1977 | 140703 |
| ultrastructural localization of acid protein polysaccharides and calcium in the vacuoles of the chicken thrombocyte. | the coexistence of acid protein polysaccharides and calcium in the vacuoles of chicken thrombocytes were studied by means of ultrahistochemical methods and electron probe x-ray microanalysis. the thrombocytes possessed large vacuoles of a surface connected membrane system. after both ruthenium red staining and tannic acid fixation the innersurface coat of vacuoles was always strongly and continously visualized. electron microscopic x-ray microprobe analysis of antimonate precipitates in thromboc ... | 1977 | 140851 |
| proteases stimulate proliferation of human fibroblasts. | incubation of primary human fibroblasts in serum-free medium with small concentrations of thrombin, trypsin or plasmin resulted in manyfold increase in total dna synthesis and in the number of 3h-thymidine labelled cells. rise in the frequency of mitoses indicates that the proteases stimulated also cell division. because proteases induced only a fraction of cells to proliferate increase in the total number of cells remained moderate. calf, horse and rabbit serum inhibited the growth stimulating ... | 1977 | 140878 |
| [eradication of pullorosis]. | | 1976 | 141162 |
| calcium transport and phosphoenzyme formation in sarcoplasmic reticulum isolated from normal and dystrophic chickens. | | 1977 | 141281 |
| [hypothesis and experimental confirmation of a new pharmacological model of osteoarthrosis (author's transl)]. | basing on the fact that in adult articular cartilage there is an equilibrium of anabolic and catabolic processes, we developed a hypothesis that an experimentally induced reduction of anabolic reactions will lead to degenerative alterations in joint cartilage. in our experiments using monoiodine acetate, a potent inhibitory substance, we could confirm that 6-8 weeks after intraarticular injection into the knee joint of hen arthrotic processes can be observed in cartilage. by macroscopical, histo ... | 1977 | 141288 |
| differentiation of slow and fast muscles in chickens. | 1. the development of the characteristic histochemical appearance of the slow anterior latissimus dorsi (ald) and fast posterior latissimus dorsi (pld) was studied in chickens during embryonic development as well as during regeneration of minced muscle. 2. during embryonic development the activity of the oxidative enzyme succinic dehydrogenase (sdh) is higher in the slow ald muscle already at 16 days of incubation. at this time the fast pld has a higher activity of the glycolytic enzyme, phospho ... | 1977 | 141331 |
| increased ouabain-sensitive 86rubidium uptake after mitogenic stimulation of quiescent chicken embryo fibroblasts with purified multiplication-stimulating activity. | multiplication-stimulating activity (msa), a protein which stimulates dna synthesis and growth of chicken embryo fibroblasts, was purified from serum-free medium conditioned by the growth of a rat liver cell line. purified msa was shown to rapidly stimulate ouabain-sensitive na+, k+-atpase activity as measured by both enzyme assay and rate of 86rubidium uptake. labeled ouabain binding was also shown to increase after stimulation of quiescent cells by serum or purified msa. conditions which inter ... | 1977 | 141453 |
| transfer of glycolipid between membranes of tissue culture cells, using dansylcerebroside as a model. | donor cells, which had incorporated dansylcerebroside in their membranes, could further transfer this glycolipid to monolayers of acceptor cells. the case of transfer varied among acceptor cells, bhk cells being the best and mdbk cells the poorest acceptors of the cells tested. the process of transfer seemed to be mediated by lipids rather than by proteins of the membranes. the mode of attachment between donors and acceptors, such as classified as loose contact, tight adhesion or binding by lect ... | 1977 | 141811 |
| histochemical studies of respiratory muscles of chicken. | the histochemical profiles of myofibrillar adenosine triphosphatase (atpase), nicotinamide adenine dinucleotide diaphorase (naddase), and phosphorylase (pase) activities were studied in the respiratory muscles of the chicken. most respiratory muscles contained fibers exhibiting 18 possible combinations of staining reactions (dark or light atpase; dark, intermediate, or light naddase; dark, intermediate, or light pase). fibers that stained light for atpase constituted as little as 10% of the tota ... | 1977 | 141896 |
| chemical modification of sarcoplasmic reticulum membranes. | | 1977 | 141942 |
| [eradication of ascardiasis and heterakis infection in chickens on collective poultry farms]. | | 1977 | 142335 |
| [elimination of chicken ectoparasites on industrial-type farms]. | | 1977 | 142336 |
| [let us safely protect poultry from diseases]. | | 1977 | 142344 |
| biochemical characteristics and phage-typing of staphylococci isolated from poultry. | | 1977 | 142405 |
| radioimmunoassay of elastin. | highly purified elastin was prepared from bovine ligamentum nuchae by hot alkali extraction. antisera to the protein, developed against suspensions or acid solubilized preparations, were obtained from rabbits and guinea pigs. of a large number of proteins, only insoluble elastin (from the aortae of several animal species) and tropoelastin, the putative soluble precursor, reacted with the antisera as determined by double antibody radioimmunoassay. nanogram quantities of insoluble elastin can be d ... | 1977 | 142609 |
| phosphorylation and dephosphorylation of a light chain of the chicken gizzard myosin molecule. | chicken gizzard myosin was incubated with atp and/or "native" tropomyosin (ntm) of gizzard muscle in the presence or absence of calcium ions. one of the two light chains of the myosin molecule was phosphorylated in the presence of ca, but not in its absence. the phosphorylated gizzard myosin was dephosphorylated by a crude preparation of myosin light-chain phosphatase obtained from gizzard muscle. in a superprecipitation test in the presence of egta, actomyosin reconstituted from dephosphorylate ... | 1977 | 142767 |
| fractionation of heavy meromyosin by affinity chromatography. | | 1977 | 143374 |
| [land molluscs--intermediate hosts of trematodes of the family microphallidae travassos, 1920]. | encysted metacercariae of microphallus sp. were found in the land mollusks bradybaena duplocincta and jaminia potaniniana asiatica collected on the slopes of tien-shan. the above mollusks are first reported as intermediate hosts of microphallids. the meta cercariae found were fed to white mice, golden hamsters, chickens and nestlings of sparrows and starlings. maritae developed only in white mice and golden hamsters. mature trematodes containing 14 to 35 eggs in the uterus were found in the smal ... | 1977 | 143645 |
| comparative pathologic classification of malignant lymphomas. | | 1977 | 143811 |
| the effect of ragwort (senecio jacobea) on the liver of the domestic fowl (gallus domesticus) : a histopathological and enzyme histochemical study. | 1. twenty-five 1-week-old male chicks were fed for 6 weeks on a standard diet incorporating 7% dried and ground ragwort (senecio jacobea). the chicks received the standard diet for a further 6 weeks whilst a control group of 25 similar birds received the standard diet throughout. 2. two birds from each group were killed at intervals of about 1 week and their livers were examined histologically and histochemically. 3. ragwort feeding caused megalocytosis, focal necrosis, focal hyperplasia and por ... | 1977 | 143983 |
| studies on the functions of gangliosides in the central nervous system. | | 1977 | 144428 |
| isolation and characteristics of bacteriophages from staphylococci of chicken origin. | lysogenicity in chicken coagulase-positive staphylococci was tested by incubating the strains in the presence of mitomycin c. of 88 strains tested, 84 (95.5%) were proved to be phage carriers and 81 were susceptible to any of the phages. the lysogenic strains were detected with almost equal frequency from both of typeable and untypeable strains by the international phages. sixteen phages (ch phages) were isolated from chicken lysogenic strains, and their usefulness for the typing of chicken stap ... | 1977 | 144452 |
| composition of the myosin light chain kinase from chicken gizzard. | | 1977 | 144501 |
| leptofibrils in intrafusal muscle fibres of muscle spindles in the domestic fowl. | leptofibrils consisting of narrow dark and wide light bands at regular periods are commonly found in intrafusal muscle fibres of chicken muscle spindles. they are particularly abundant in intrafusal muscle fibres with the loose type of myofilaments. they occur either at the periphery of intrafusal muscle fibres or in deeper regions, or even close to sensory nerve terminals. dark bands of some peripheral leptofibrils vary considerably in size and appear less regular in configuration. lateral exte ... | 1977 | 144565 |
| cellular cooperation at the level of antibody-producing cells in chickens. | the effect of in vitro cocultivation of immune and non-immune syngeneic lymphoid cells on the antibody response was studied in chickens. cocultivation of immune and non-immune spleen cells did not affect significantly the pfc numbers. substantial increase in pfc was observed in mixed cultures of immune spleen cells with non-immune bone marrow cells. the existence of an enhancing effect of non-immune cells on the antibody-producing cells, which had been earlier described in mice, was observed in ... | 1977 | 144614 |
| the binding of myosin subfragment 1 to immobilized actin and nucleotide matrices [proceedings]. | | 1977 | 144625 |
| histochemical studies on the mucopolysaccharides of the developing chick kidney. ii. mucopolysaccharides of the collecting tubules and excretory ducts. | mucopolysaccharides of the collecting tubules and excretory ducts of developing chick kidney were studied histochemically to elucidate the relations, between the changing chemical properties of these compounds and excretory processes during pronephric, mesonephric and metanephric developmental stages. at the pronephric ammonotelic stage the collecting tubules contain only neutral mucopolysaccharides, whereas at the mesonephric ureotelic stage neutral mucopoly saccharides are found till the 9th d ... | 1977 | 144645 |
| establishment of a new bacteriophage set for typing avian staphylococci. | a new phage set was proposed for the typing of coagulase-positive staphylococci from chickens. the set was composed of 16 phages isolated from lysogenic staphylococci from chickens and 3 adapted phages derived from the international phage set. these phages were classified into 4 groups (i, ii, iii and iv) according to their host ranges. the 19 phages were used for typing 569 coagulase-positive staphylococci; 94.2% of the isolates were lysed by 1 or more phages, 88.0% at a routine test dilution, ... | 1977 | 145191 |
| steady-state kinetics of smooth muscle myosin. | the kinetic properties of purified smooth muscle myosin, free of actin, have been examined. analysis of the steady-state kinetic data revealed an intermediary plateau region on the substrate saturation curves. in addition, these data, when analyzed by hill and lineweaver and burk plots, indicate both positive and negative cooperativity, suggesting at least four substrate binding sites. the plateau region was abolished when the kinetic measurements were made at ph 5.5 and 9.0. both positive and n ... | 1978 | 145241 |
| [the combined effects of testosterone propionate and a temporary lowering of temperature on the fate of müllerian ducts of the female bird embryo. morphological, histological, and cytobiochemical studies]. | the action of testosterone propionate combined with a temporary lowering of temperature after the sexual differentiation of chick and quail female embryos--inhibits the cephalo-caudal regression of the right müllerian duct--prevents the development of the left one. in some cases, these two ducts are thread and often have the same length: in other cases, the involution of the müllerian tractus may be total. | 1977 | 145279 |
| rabbit antiserum to human b-cell alloantigens. ii. mechanism of inhibition of stimulation in the mixed lymphocyte response. | | 1978 | 145900 |
| localization of adenylate cyclase in skeletal muscle sarcoplasmic reticulum and its relation to calcium accumulation. | | 1978 | 145956 |
| mechanism of myosin and actomyosin atpase in chicken gizzard smooth muscle. | | 1978 | 146612 |
| antibody-dependent cellular cytotoxicity by allosensitized human t cells. | peripheral human t cells, isolated by sheep erythrocyte-rosette formation and density centrifugation, were highly cytotoxic to both ab-coated autologous lymphocytes and antibody (ab)-coated chicken erythrocytes when stimulated in mixed lymphocyte culture, but were not lytic when freshly purified, or when unstimulated in 6-day culture. allosensitized t cells were shown to effect this activity by a specific effector-target cell interaction dependent on ab, as indicated by: (a) induction of killing ... | 1978 | 146728 |
| comparison of amino acid sequence of troponin i from different striated muscles. | the sequence of troponin i from fast and slow skeletal and cardiac muscle shows strong homology in the region which binds to actin and is responsible for inhibition of the actomyosin at pase. more differences are found in the n-terminal region which binds to troponin c. | 1978 | 146828 |
| comparison of therapeutic efficacy of doxycycline, chlortetracycline and lincomycin-spectinomycin on e. coli infection of young chickens. | three replicate trials were conducted with broiler male chicks to test the therapeutic efficacy of doxycycline, chlortetracycline and lincomycin-spectinomycin in water against an artifically induced escherichia coli infection. mortality, lesion scores (heart, liver and air sac), and performance data were the criteria in evaluating therapeutic efficacy of these drugs. results indicated the therapeutic efficacy of doxycycline was greater than chlortetracycline and lincomycin-spectinomycin. | 1977 | 146868 |
| the history of avian medicine in the united states. iv. some milestones in american research of poultry parasites. | most of the major contributions of americans to knowledge of poultry parasites have been made in the last 100 years. factors responsible for this tardiness differed somewhat according to the disease. the first parasitic diseases to receive attention were usually those with distinctive characteristics as well as serious consequences, such as "gapes" and lousiness. since helminths could usually be readily observed, whereas protozoa could be observed only by persons skilled in microscopy, disorders ... | 1977 | 147074 |
| histochemical characterization of chicken lymphoid tissues. | | 1977 | 147191 |
| biochemical characteristics and enterotoxigenicity of staphylococcus aureus strains isolated from poultry. | | 1978 | 147262 |
| the functional characteristics conserved in tropomyosins. | 1. tropomyosin, one of the regulatory proteins in muscle contraction, was prepared from chickens, rabbits, frogs, shrimps, and shellfish, and conserved characteristics were studied using an enzymological technique. 2. all tropomyosins tested, irrespective of their sources, were found to have the ability to mediate the inhibitory activity of rabbit troponin toward rabbit mg2+-activated actomyosin atpase (mg2+-atpase) activity in the absence of ca2+ ions. 3. the effect of tropomyosin on the mg2+-a ... | 1978 | 147270 |
| glutamate dehydrogenase and glutamine synthetase activity in some organs of ruminants and monogastric animals. | a comparative study of glutamate dehydrogenase (gldh 1.4.1.2) and glutamine synthetase (gs 6.3.1.2.) activity in liver, kidney and spleen homogenates from cattle, sheep, pigs and chickens showed that chicken liver contained on an average 3.5%, pig liver 8.3% and bovine liver 45.6% of the glutamate dehydrogenase activity present in sheep liver. relatively low trace activity was found in the spleen and kidneys, except for the renal cortex of cattle (32% of activity in the liver). gs activity was t ... | 1977 | 147473 |
| [immunosuppressive activity of several drugs and their effect on antibody formation in pullorum disease]. | furazolidon given alone or in combination with chloramphenicol, with spectinomycin, with gentamycin or with sodium arsenilate as well as chlorpyrazine, applied alone, suppress the clinical manifestation of pullorum disease in birds both in the experimental and in the spontaneous outbreak of the disease. these medicinal drugs lower the production of agglutinins in birds--mostly the combination furazolidon+chloramphenicol, followed by furazolidon+sodium arsenilate. the same combinations do not pro ... | 1977 | 147557 |
| [the fine structure of the epithelium of the main outlets from the liver and pancreas of the domestic chicken (author's transl)]. | light- and electronmicroscopic and some histochemical investigations on the major excretory ducts of pancreas and liver was carried out on 24 adult chicken. the epithelium of both ducts was shown to include: cells with apical secretory granules, non-differenciated duct cells, ciliated cells and migrating cells. in addition the epithelium of the pancreatic ducts included goblet cells. the distal plasmalemm and the microvilli are covered with surfacecoat, which like the secretory granules produces ... | 1978 | 147635 |
| comparison of the (ca2+ + mg2+)-atpase proteins from normal and dystrophic chicken sarcoplasmic reticulum. | the involvement of membrane protein in dystrophic chicken fragmented sarcoplasmic reticulum alterations has been examined. a purified preparation of the (ca2+ + mg2+)-atpase protein from dystrophic fragmented sarcoplasmic reticulum was found to have a reduced calcium-sensitive atpase activity and phosphoenzyme level, in agreement with alterations found in dystrophic chicken fragmented sarcoplasmic reticulum. an amino acid analysis of the atpase preparations showed no difference in the normal and ... | 1978 | 147712 |
| drug-induced changes in dna fluorescence intensity detected by flow microfluorometry and their implications for analysis of dna content distributions. | chicken erythrocytes, which contain less dna than mammalian diploid cells, were used as an internal standard to control instrumental and staining variables during flow microfluorometric analysis. with the dna stain, mithramycin, and with an epics ii flow microfluorometer, ratios between the modal g1 fluorescence of experimental cells and that of chicken erythrocytes were determined. the results indicate that unperturbed cell populations of l1210 and hela cells in vitro and l1210 ascites cells in ... | 1978 | 147729 |
| arthus reactions in chickens. | | 1977 | 147785 |
| adenosine triphosphatase activity and "thick filament" formation of chicken gizzard myosin in low salt media. | the atpase activity of chicken gizzard myosin was studied by varying the kcl concentration in the reaction medium. the following was thus found: (a) a sharp depression of the activity occurred when the kcl concentration was reduced to less than 0.3 m, showing the minimum activity around 0.15 m kcl. (b) the activity depression was removed by addition of urea or bay papain-digestion, but not by addition of p-chloromercuribenzoate. (c) in the kcl concentration where the activity depression occurred ... | 1978 | 147868 |
| two forms of chicken gizzard f-actin depending on preparation with or without added calcium. | | 1978 | 147869 |
| [phosphofructokinase (author's transl)]. | | 1977 | 148073 |
| development of peripheral nerve and its reaction to axotomy. | | 1978 | 148202 |
| [histotopics of glycosidases in the oviduct of domestic chicken (gallus domesticus)]. | | 1978 | 148220 |
| filamin-actin interaction. dissociation of binding from gelation by ca2+-activated proteolysis. | chicken gizzard filamin has been digested with purified ca2+-activated protease. the subunits of (mr = 250,000) of the protein are cleaved asymmetrically into two fragments, heavy merofilamin, mr = 240,000, and light merofilamin, mr = 9,500. digestion is complete at substrate to enzyme ratios of 100:1 and requires ca2+ concentrations in excess of 0.3 mm. heavy merofilamin binds to f-actin as evidenced by cosedimentation with f-actin, by direct observation under the electron microscope, and by it ... | 1978 | 148464 |
| troponin-like proteins from muscles of the scallop, aequipecten irradians. | ca2+ regulation of molluscan actomyosin adenosine triphosphatase is known to be associated with the myosin molecule. sodium dodecyl sulphate/polyacrylamide-gel electrophoresis, however, also suggests the possible presence of troponin, a thin-filament-linked ca2+-regulatory complex. in the present study, scallop troponin and tropomyosin were prepared and complexed with rabbit actin; the resulting synthetic thin filaments form a ca2+-dependent actomyosin adenosine triphosphatase with ca2+-insensit ... | 1978 | 148888 |