| dendritic and axonal transport of nucleoside derivatives in single motoneurons and release from dendrites. | | 1975 | 49211 |
| specific fetal serum proteins of thirteen mammalian species. | | 1975 | 49249 |
| isolation of mammalian type c rna virus cross-reactive antigen and antibody by immuno-affinity chromatography. | | 1975 | 49291 |
| multiple species-specific and interspecific antigenic determinants of a mammalian type c rna virus internal protein. | | 1975 | 49292 |
| human antibodies to bovine alpha-globulin. | antibodies to bovine gamma-globulin (anti-bgg antibodies) were detectable by a radio-immunoassay in 70% of healthy blood donors but, generally, the titres were low. significantly increased concentrations of anti-bgg antibodies were found in patients lacking iga but not in patients with allergic disorders. the anti-bgg antibodies were shown to give rise to falsely high ige values in the radio-immunosorbent test for ige determination (rist) when a sheep anti-ige antiserum was used. furthermore, fa ... | 1975 | 49305 |
| on axoplasmic flow. | | 1975 | 49329 |
| the slow component of axonal transport. identification of major structural polypeptides of the axon and their generality among mammalian neurons. | this study of the slow component of axonal transport was aimed at two problems: the specific identification of polypeptides transported into the axon from the cell body, and the identification of structural polypeptides of the axoplasm. the axonal transport paradigm was used to obtain radioactively labeled axonal polypeptides in the rat ventral motor neuron and the cat spinal ganglion sensory neuron. comparison of the slow component polypeptides from these two sources using sodium dodecyl sulfat ... | 1975 | 49355 |
| anesthesiology teaching of medical students: a changing curriculum for changing times. | | 1975 | 49430 |
| structural proteins of mammalian rna tumor viruses: relatedness of the interspecies antigenic determinants of the major internal protein. | the relatedness of antigenic determinants of purified major core proteins of the murine, feline, rd 114/baboon, and woolly monkey/gibbon ape groups of rna tumor viruses was examined by competition radioimmunoassay. in assay systems of a homologous antigen and antiserum, high affinity competition for binding to all of the antibodies was observed only with the homologous unlabeled protein; the core proteins of other groups of viruses showed only low affinity binding of a small fraction of antibodi ... | 1975 | 49439 |
| quantitative nucleotide sequence relationships of mammalian rna tumor viruses. | a molecular hybridization technique has been used to quantitatively measure the nucleotide sequence relationships of selected mammalian rna tumor viruses. reciprocal cross-hybridization tests were done in which a given radioactively labeled, viral genomic rna species was annealed with an excess of unlabeled, complementary dna product synthesized in endogenously instructed reverse transcriptase reactions. hybrid formation was measured with pancreatic rnase a. three representative mammalian rna tu ... | 1975 | 49442 |
| interspecies antigenic determinants of the reverse transcriptases and p30 proteins of mammalian type c viruses. | the major internal structural proteins (p30) of type c viruses isolated from several mammalian species were studied by radioimmunoprecipitation and competitive radioimmunoassays. three antigenically distinguishable sets of interspecies determinants could be demonstrated by both methods. one set of determinants shared by viruses of rodent origin (mouse and rat) can be detected readily in feline leukemia viruses but not in other type c viral groups. the p30 proteins of murine viruses also contain ... | 1975 | 49443 |
| letter: joint infection by pasteurella multocida. | | 1975 | 49552 |
| proceedings: midodrine, a long acting alpha - adrenergic stimulating agent. | | 1975 | 49856 |
| a fluorescence and electron microscopic study of the adrenergic innervation in the vestibular ganglion and sensory areas. | the adrenergic innervation in the vestibular ganglion and sensory areas in rabbit and cat was studied with fluorescence and electron microscopic techniques. all adrenergic nerve fibres consisted of postganglionic axons from the ipsilateral superior cervical ganglion. in rabbit, postganglionic nerve fibres passed via the carotic plexus. probably because of the anatomical difference, the feline internal carotic artery being rudimentary, all sympathetic nerve fibres to the inner ear in cat passed v ... | 1975 | 49998 |
| projections to the gyrus proreus from the brain stem tegmentum (locus coeruleus, raphe nuclei) in the cat, demonstrated by retrograde transport of horseradish peroxidase. | | 1975 | 50117 |
| antibody in cats to mammalian rna tumor virus interspecies antigens. | the studies were undertaken to determine whether the cat, a mammalian species that carries xenotropic endogenous c-type virus(es) and in addition undergoes horizontally transmitted oncogenic c-type rna tumor virus infections, responds immunologically to the mammalian c-type virus interspecies antigens. sera from normal cats and from cats with spontaneous or virus-induced neoplasms were examined for antibodies to interspecies antigen antigen by complement-fixation inhibition, by inhibition of the ... | 1975 | 50133 |
| an ultrastructural study of the microfilaments in rat brain by means of e-pta staining and heavy meromyosin labeling. ii. the synapses. | to identify structures involved in the translocation of the synaptic vesicles towards the presynaptic membrane, an ultrastructural study has been undertaken by means of (1) the e-pta stain and (2) the hmm-labeling procedure. using serial sections of e-pta stained nervous tissue, especially those made in transversal and tangential planes, the geometric order of the presynaptic grid and of its constituents has been described in detail. it consisted of dense projections having the shape of small tr ... | 1975 | 50140 |
| [uptake and transport of exogenous peroxidase in the masticatory muscles of cats. localization of ganglionic neurons]. | retrograde axonal transport of horseradish peroxydase (hrp) has been used to trace the cells of origin of proprioceptive fibers in jaw-closing and jaw-opening muscles. after injection of hrp in young cats' masticatory muscles (masseteric, temporal, pterygoid, mylohyoid and digastric) labelled neurons were found in the ipsilateral semi-lunar ganglion and trigeminal mesencephalic nucleus. it is concluded that sensory endings are present in jaw-opening as in jaw-closing muscles; possibly the affere ... | 1975 | 50149 |
| [uptake and transport of exogenous peroxidase in the masticatory muscles of the cat. localization of motor neurons]. | in the present work, a topographical localization of masticatory muscle motoneurons was undertaken. horseradish peroxydase injected in each muscle can be transported in the retrograde direction to the corresponding motoneurons cell bodies. jaw-closing muscle motoneurons were identified in the dorsal part of the motor trigeminal nucleus whereas jaw-opening muscle motoneurons were observed in the ventro-medial region. | 1975 | 50152 |
| [sleep stages in the "encéphale isolé" preparation iii. a quantitative and comparative study of wakefulness-sleep cycles in the semi-chronic encéphale isolé preparation]. | | 1975 | 50183 |
| hypothalamic temperature during the sleep cycle at different ambient temperatures. | hypothalamic temperature during complete and incomplete sleep cycles (slow wave sleep followed by fast wave sleep and slow wave sleep followed by arousal, respectively) has been studied in freely moving cats at 20 degrees c and 0 degrees c ambient temperatures. the results show that sleep and thermoregulatory processes interact and, at 0 degrees c ambient temperature, become mutally exclusive. the occurrence of fast wave sleep is related to an opptimum range of hypothalamic temperatures which is ... | 1975 | 50184 |
| pallidal and entopeduncular single unit activity in cats during drinking. | it has been shown that pallidal units display changes in firing rate during food seeking and consummatory behavior. the purpose of the present work was to determine which properties of the ingested material or ingestive behavior were most potent in altering unit activity. single unit activity was recorded in the globus pallidus and entopeduncular nucleus of awake restrained cats during introduction of fluid into the mouth. a very high proportion of pallidal and entopeduncular neurons showed chan ... | 1975 | 50202 |
| oculomotor outflow and its relation to electrical activity of suprasylvian gyrus and pulvinar during paradoxical sleep in the cat. | during paradoxical sleep, single unit activity was recorded from the posterior part of the middle suprasylvian cortex together with the electrical activity of the medial rectus eye muscles and that of the pulvinar nucleus. experiments were performed on unrestrained cats, which slept in a dark cage. the intervals between the onsets of the successive phasic ocular emg bursts were determined. there was a pronounced occurrence of intervals lasting 120-240 msec. the mean discharge rate of the suprasy ... | 1975 | 50205 |
| electroencephalographic signs of ethanol tolerance and physical dependence in the cat. | spontaneous electrical activity was recorded from three cortical and five subcortical sites, via permanently implanted electrodes, in five conscious, freely-moving adult cats. initial observations were made during and after an intravenous infusion of ethanol, 1 g/kg. the animals then received ethanol by gastric intubation, in doses of 1.5 g/kg every 8, 12 or 24 h, for a period of 5 weeks. electrical and behavioral observations were repeated on the day following the last gavage, before and during ... | 1975 | 50212 |
| chloralose induced alteration of visually evoked response from specific and non-specific regions of cat neocortex. | visually evoked response (ver) and eeg from the motor cortex (precruciate gyrus) and the visual cortex (marginal gyrus) of cats were recorded from 4 to 7 h after the injection of anesthetic doses of alpha-chloralose. during the recording period the ver from the precruciat gyrus showed a 200-300% increase in amplitude while the ver from the marginal gyrus rarely varied more than 50% in amplitude, and did so independent of the changes in the ver from the precruciate gyrus. the number of large ampl ... | 1975 | 50218 |
| modification of the direct cortical response by taurine. | the effects of taurine on the direct cortical response have been studied in immobilized cats (with local analgesia). the primary negative component of the response was inverted in polarity by the topical application of 25 mm taurine while the later slow negative component was considerably augmented. these effects are identical to those observed with 25 mm gaba. pentobarbital anesthesia produced little qualitative change in the effects of taurine. with stronger stimuli in the presence of taurine, ... | 1975 | 50228 |
| [cat-eye syndrome. clinical and cytogenetical differentialdiagnosis (author's transl)]. | we report a 5 1/2-year-old girl whose clinical symptoms are consistent with diagnosis of the cat-eye syndrome. the prominent symptoms are: anal stenosis, preauricular tags and pits, coloboma of the iris, doubling of the pelvis and ureter on both sides, vesicourethral reflux on the right side and normal mental development. leucocyte alkaline phosphatase is normal. chromosomal analysis shows a supernumerary submetacentric chromosome. this extra chromosome is smaller than the g-group chromosomes an ... | 1975 | 50268 |
| autoradiographic studies of the projections of the midbrain reticular formation: descending projections of nucleus cuneiformis. | the descending projections of nucleus cuneiformis in the cat were traced by autoradiography in the transverse and sagittal planes following stereotaxically placed injections of 3h-leucine. many descending axons are organized into distinct fiber systems, of which the largest and most well-defined crosses directly in the midbrain and descends through the ventromedial tegmentum of the brain stem. this fiber system first terminates profusely in n. reticularis tegmenti pontis and then proceeds throug ... | 1975 | 50329 |
| translaminar growth of axons in the kitten dorsal lateral geniculate nucleus following removal of one eye. | the distribution of retinal afferents to the dorsal lateral geniculate nucleus of the cat following the early removal of one eye has been studied using autoradiographic as well as degeneration techniques. the degeneration techniques have confirmed earlier observations that axons from the remaining, normal eye grow across laminar borders into the deafferented lamina a. autoradiographic techniques, however, have shown further examples of translaminar growth between lamina a nadlamina a1 as well as ... | 1975 | 50330 |
| golgi studies in the substantia gelatinosa neurons in the spinal trigeminal nucleus. | this golgi study identifies three neuronal cell types in the substantia gelatinosa (sg) layer of the spinal trigeminal nucleus. the sg neurons are distinguished from each other based on: (1) dendritic branching pattern, (2) denritic spine distribution, (3) geometric shape of the denritic tree, (4) laminar distribution of the dendrites, (5) axonal branching pattern and (6) laminar distribution of the axonal arbor. the islet cell is found in small clusters and its dendrites and axonal arbor are co ... | 1975 | 50333 |
| studies with brugia pahangi 10. an attempt to demonstrate the sharing of antigenic determinants between the worm and its hosts. | infective stage brugia pahangi that were reared in aedes aegypti survived equally well in cats that had previously been immunized against mosquito tissue and in a normal cat. the survival of third, fourth, juvenile, adult and microfilarial stages of b. pahangi that were recovered from cats was similar in jirds that had been immunized against cat antigens and in normal jirds. host antigenic determinants were not detected on the surface of larvae in substantial amounts using fluorescent antibody t ... | 1975 | 50339 |
| parameters of dendritic transport. | | 1975 | 50719 |
| specialized contacts of astrocytes with astrocytes and with other cell types in the spinal cord of the cat. | adult and half grown healthy male and female cats were used in this study. the white and gray matter of dorsolateral region in the upper lumbar levels of the spinal cord were examined by electron microscopy after fixation by aldehyde perfusion and commonly used methods of embedding, sectioning and staining. the report is limited to description and illustration of specialized junctions of astrocytes. in addition to previously described astrocyte-astrocyte gap junctions, astrocytes are connected b ... | 1975 | 50752 |
| proceedings: simple cells in area 18 of the cat? | | 1975 | 50772 |
| [proceedings: eye movements evoked by stimulation of the tubercle of the corpora quadrigemina in the awake cat]. | | 1975 | 50773 |
| [proceedings: some biochemical properties of bovine leukemia virus]. | | 1975 | 50808 |
| studies on the cerebellar projections from the main and external cuneate nuclei in the cat by means of retrograde axonal transport of horseradish peroxidase. | the cerebellar projections from the main and external cuneate nuclei in the cat have been studied by means of retrograde axonal transport of horseradish peroxidase. the main projection from the external cuneate nucleus (ecn) is to the intermediate and, possibly, the small lateral part of lobule v and to the paramedian lobule on the ipsilateral side. the projection from the ecn to the cerebellar regions mentioned is topographically organized. cells in the caudal part of the ecn send their axons t ... | 1975 | 50867 |
| endogenous primate and feline type c viruses. | 1. endogenous type c viruses have been detected in a wide variety of mammalian species. multiple copies of related, but not identical, virogene sequences can be found in the dna of these species. 2. the endogenous type c virogenes are subject to the pressures of natural selection, and closely related species possess related virogene sequences. these genes evolve as cellular entities diverging from one another in a manner which correlates well with taxonomic relatedness of the species. 3. the end ... | 1975 | 50895 |
| intra-axonal transport of transmitters in mammalian neurons. | | 1975 | 51044 |
| [method of quantitative determination of trypsin and the activity of antitrypsin with the aid of specific antitryptic precipitating serum]. | | 1975 | 51116 |
| letter: joint infection by pasteurella multocida. | | 1975 | 51168 |
| letter: joint infection by pasteurella multocida. | | 1975 | 51321 |
| a new technique of silver impregnation for oligodendrocytes with potassium dicyanoargentate by means of perfusion-fixation method. | | 1975 | 51493 |
| the foamy viruses. | | 1975 | 51620 |
| the identification of striatal and pallidal neurons projecting to substantia nigra. an experimental study by means of retrograde axonal transport of horseradish peroxidase. | | 1975 | 51667 |
| slow axoplasmic transport of mitochondria (mao) and lactic dehydrogenase in mammalian nerve fibers. | the axoplasmic transport of the enzyme monoamine oxidase (mao) (monoamine:o2 oxidoreductase, (deaminating) ec 1.4.3.4), a marker for mitochondria, and lactic dehydrogenase (ldh) (l-lactate:nad oxidoreductase, ec 1.1.1927), a soluble component of axoplasm, was studied in cat sciatic nerve. for both these enzymes a linear accumulation was found in the nerve proximal to ligations over a period of at least 20 h. in double-ligation experiments no evidence of a depletion of enzymes within the nerve se ... | 1975 | 51675 |
| [scanning transmission electron microscopy of dendritic spines stained by the golgi method]. | scanning transmission electron microscopy of the dendritic spines of multipolar neurons in the cat inferior colliculus was achieved on golgi semi-thin sections. the three basic types of dendritic spines (st, ms, th) were identified. scanning transmission electron microscopy provides a reliable method for a three dimensional view of these structures at high resolution and consequently a more accurate appreciation of their size. in addition, it could prove very useful in the quantitative analysis ... | 1975 | 51692 |
| amygdala and masseteric reflex. i. facilitation, inhibition and diphasic modifications of the reflex, induced by localized amygdaloid stimulation. | the changes in amplitude of the monosynaptic masseteric reflex (mr), induced by stimulation of the amygdaloid area for the defence reaction (n. basalis, pars magnocellularis) and in other subdivisions of the amygdaloid complex, were studied in cats with spinal section maintained under flaxedil. simultaneously, the the effects of stimulation on the tonic activity of the masseteric nerve were observed. a maintained facilitation of the mr was elicited by stimulation of the lateral nucleus, the par ... | 1975 | 51716 |
| amygdala and masseteric reflex. ii mechanism of the diphasic modifications of the reflex elicited from the "defence reaction area". role of the spinal trigeminal nucleus (pars oralis). | it has been demonstrated (gary bobo and bonvallet 1975) that long-lasting stimulation of the "amygdaloid area for the defence reaction" (basal nucleus, pars magnocellularis) elicits, after an initial facilitation, a delayed inhibition of the monosynaptic masseteric reflex (mr), while stimulation of the amygdalofugal fibers running in the ansa lenticularis provokes an immediate inhibition of the reflex. in present study, the structure which mediates these inhibitions has been identified. using co ... | 1975 | 51717 |
| a technique for on-line classification of evoked potentials into two groups according to subjective interpretation of the stimulus. | a technique is described for on-line classification of evoked potentials (eps) into distinct groups for separate averaging according to a criterion available after the beginning of the eps. it is suitable for analysing psychophysiological correlations (relationship between eps and subjective perception). the system consists of a slightly modified nta 512 b (hungarian) average response computer (however, any cat-computer-like device can be used in a similar way) and of an additional device. it ca ... | 1975 | 51725 |
| proceedings: visual and auditory evoked responses during enflurance anesthesia in man and cats. | | 1975 | 51760 |
| reproductive and behavioral control in the male and female cat with progestins: long-term field observations in individual animals. | | 1975 | 51808 |
| antigenic determinants of the 70,000 molecular weight glycoprotein of woolly monkey type c rna virus. | the 70,000 molecular weight glycoprotein (gp70) of a type-c rna virus originally isolated from a woolly monkey has been partially purified and immunologically characterized. evidence that this viral protein is viral coded was derived from studies showing its antigenic properties to be unaltered by virus passage in cells of different species. a broadly reactive competition immunoassay was developed utilizing antiserum prepared against feline leukemia virus to precipitate 125i-labeled woolly monke ... | 1975 | 51882 |
| biochemical properties of the bromodeoxyuridine-induced guinea pig virus. | the biophysical and biochemical properties of the virus particles released by guinea pig embryo cells treated with 5-bromo-2'-deoxyuridine (budr) have been compared to those of the b-type mouse mammary tumor virus (mmtv) and the c-type rauscher murine leukemia virus. the high-molecular-weight (60 to 70s) rna of the budr-induced guinea pig virus (gpv) has a molecular weight of 8 x 106 when measred by mixed agarose polyacylamide gel electrophoresis. the virus particles isolated from the tissue cul ... | 1975 | 51933 |
| [biochemical properties of alpha-fetoprotein (author's transl)]. | | 1975 | 51943 |
| [method for the morphological identification of individual brain neurons intravitally and after fixation]. | pyramidal neurons stained with methylen blue (from layers iii and v of the cat brain cortex) are revealed in vivo after a special preparation of the contact objectives in the reflecting light. small pieces of the brain tissue with identified neurons were separated under visual control, after which an oriented piece placed in a special grid-basket appeared to be stabilized by the borders of the grid. this method permits investigating the same neurons after fixation by means of histological light ... | 1975 | 52225 |
| gordon wilson lecture, 1974: searching for the cause of systemic lupus erythematosus. | | 1975 | 52230 |
| combine hrp and fink-heimer staining applied on the gracil nucleus in the cat. | | 1975 | 52386 |
| kindling effect and sleep organization in cats. | a comparative study of sleep organization was made between seven kindled cats and four controls. longitudinal observation during 5 h of polygraphic recording continued every day at the beginning, irregularly after kindling, for one year. during kindling installation, rem sleep was gradually reduced after each stimulation. when the kindling phenomenon was established each stimulation triggered a typical generalized convulsion and diminution of rem sleep persisted. rem characteristics such as tota ... | 1975 | 52437 |
| far-field recorded frequency-following responses: evidence for the locus of brainstem sources. | two experiments were performed to determine the brainstem origins of the scalp recorded auditory frequency-following response (ffr). the first was a study of ffr onset latency in which responses observed by direct recording from depth electrodes in brainstem auditory nuclei were compared with those obtained from the scalp. the mean onset latency of scalp recorded ffr (5.8 msec) closely approximated the 5.4 msec mean latency of response recorded from within the inferior colliculus (ic). in a seco ... | 1975 | 52439 |
| the effects of a spirolactone derivative on eeg and cortical single unit activity in the cat. | with systemic (60-150 mg/kg) and topical application, aldactone exhibited strong convulsant action on the cat cerebral cortex. the most common abnormal interictal features of the surface ecog pattern were sequences of fast waves and slow negative waves associated with positive sharp waves, negative field potentials and burst-like neuronal activation in the extracellular microelectrode record. another abnormal pattern was a period of ecog and neuronal inactivity subsequent to the negative transie ... | 1975 | 52440 |
| suppression of cortical epileptiform activity by generalized and localized ecog desynchronization. | the effects of high frequency electrical stimulation of both diffusely projecting brain regions and regions of more restricted projection were studied on penicillin-induced cortical epileptiform focal activity in the cat. results obtained were contingent on the level of focal activity present at the time of stimulation. very active foci (spike rates above 0.5/sec) were uniformly driven by stimulation of all structures under study. foci exhibiting weak to moderate levels of activity were, on the ... | 1975 | 52443 |
| proceedings: a posteriori selective averaging of evoked potentials: comparison with wiener filtering. | | 1975 | 52461 |
| proceedings: system's analysis of simultaneously recorded visual evoked potentials in the cat brain. | | 1975 | 52464 |
| proceedings: slow potential shift evoked by paired sensory stimuli in acute experiments in the cat. | | 1975 | 52468 |
| proceedings: experimental investigations showing an involvement of taurine in epilepsy. | | 1975 | 52470 |
| proceedings: contribution of the cerebellum to the neuronal rhythm in locomotion. | | 1975 | 52490 |
| proceedings: the kindling effect in the cat and the rat: neurophysiological and neuropharmacological approach. | | 1975 | 52535 |
| history of central nervous system regeneration research. | | 1975 | 52554 |
| feline infectious peritonitis with spinal cord involvement in two cats. | two cats from the same household had posterior paresis and hypergammaglobulinemia. histologic evaluation of the spinal cords revealed a pyogranulomatous reaction consistent with that reported for feline infectious peritonitis. | 1975 | 52646 |
| low temperature slowing and cold-block of fast axoplasmic transport in mammalian nerves in vitro. | 1) fast axoplasmic transport in mammalian nerve in vitro was studied using an isotope labeling technique. the rate of outflow in cat sciatic nerve fibers of 410 mm/day in vitro was reduced at temperatures below 38 degrees c with a q10 of 2.0 in the range 38-18 degrees c and a q10 of 2.3 at 38-13 degrees c. 2) at a temperature of 11 degrees c a partial failure of transport occurred. at temperatures below 11 degrees c a complete block of fast axoplasmic transport occurred, a phenomenon termed "col ... | 1975 | 52688 |
| on the pharmacology of org 6338 (2beta, 16beta-dipiperidino - 5alpha - androstan - 3alpha - ol acetate dimethobromide), a new steroidal neuromuscular blocking agent. | org 6368 is a homologue of pancuronium bromide. its interactions with other agents in the cat sciatic nerve-gastrocnemius muscle preparation revealed that paralysis was of the non-depolarizing type. this was confirmed in experiments using avian muscle. org 6368 is a potent muscle relaxant being 2-4 times as potent as (+)-tubocurarine in the cat. paralysis in the cat is rapid in onset and of appreciably shorter duration than that of pancuronium and (+)-tubocurarine. repeated injections of the sam ... | 1975 | 52704 |
| evolution of type c viral genes: origin of feline leukemia virus. | reiterated gene sequences related to the rna of feline leukemia virus (felv) are detected in all tissues of domestic cats and their close felis relatives but not in more distantly related felis species. partially homologous viral gene sequences are found in rodent, and particularly rat, dna. together with the immunologic relationships observed between felv and endogenous rodent type c viruses, the results lead to the conclusion that felv-related genes were transmitted from a rodent to cat ancest ... | 1975 | 52892 |
| analytical electron microscopic identification of cytochemical products in thin sections. | a cytochemical technique utilizing a chromium complex to localize biogenic amines in tissue has been studied using energy dispersive x-ray analysis. the x-ray analysis procedure shows that chromium is indeed involved in the complex at the biogenic amine locus. this demonstrates intraneuronal sites for neurotransmitter agents and shows that the combined methodologies of histochemistry, cytochemistry, electron microscopy and energy dispersive x-ray analysis can provide new methods and insights int ... | 1975 | 52985 |
| [complex application of stains in the histochemical study of proteins]. | the paper proposes a complex of methods for the histological study of protein which allosw revealing heterogeneity of its compostitions, determining the protein discharge and obtaining the data on the presence and distribution of a number of aminoacid residues. the schedule of the study includes reactions with dichlortriazine basic and acid stains (of both low and high affinity). the proposed schedule is convenient for detection and characterization of protein both in the structure, containing m ... | 1975 | 53044 |
| [peculiarities of the staining of neural tissue with procion yellow]. | the application of protion yellow allowed to reveal nerve cells of different size, and their dendrites and axons, bundles of nerve fibres for a considerable length. staining with protional yellow resembles to impregnation of the nervous tissue with silver salts. combination of protion yellow with dyes of other groups and silver nitrate impregnation improves the stability of staining. | 1975 | 53045 |
| lung gas tensions and active regulation of ventilation/perfusion ratios in health and disease. | | 1975 | 53061 |
| role of biogenic amines in the effects of marijuana on eeg patterns in cats. | the results of pretreatment with drug having selective action on brain biogenic amine levels on the subsequent effects of acute marijuana treatment were assessed for behavior and eeg measures. behavioral changes and alterations in the spontaneous eeg indicated that pretreatment with drugs affecting brain levels of 5-ht was most effective in altering the dual properties of acute marijuana treatment. the present findings support the interpretation that the availability of serotonin interacts with ... | 1975 | 53140 |
| regulation of unit activity in nucleus reticularis thalami by the mesencephalic reticular formation and the frontal granular cortex. | recruiting responses and related synchronous activities appear to be mediated by thalamic inhibition originating in nucleus reticularis thalami, a structure jointly regulated by an ascending projection from mesencephalic reticular formation and a descending influence from the frontal cortex. extracellular unit activity was recorded in the anterior nucleus reticularis thalami (rva) during recruiting responses, augmenting responses, stimulation of the mesencephalic reticular formation (mrf), and c ... | 1975 | 53142 |
| a correlation between the effects of anti-mitotic drugs on microtubule assembly in vitro and the inhibition of axonal transport in noradrenergic neurones. | 1. podophyllotoxin, colchicine and griseofulvin inhibit the intra-axonal movement of noradrenaline storage vesicles in cat hypogastric nerve/inferior mesenteric ganglion preparations maintained in vitro, cause the disappearance of axonal microtubules and inhibit the assembly of microtubules from tubulin in vitro. the order of potency of the three effects is podophyllotoxin greater than colchicine greater than griseofulvin. 2. lumicolchicine is without effect on the three parameters and does not ... | 1975 | 53281 |
| localization of laryngeal motor neurons in the kitten. | in a series of 12 newborn kittens, horseradish peroxidase (hrp) was used to trace retrograde axoplasmic flow in the motor neurons to laryngeal muscles. the animals were sacrificed 24 hours after injection of hrp into a specific laryngeal muscle, and the brain stems were stained for peroxidase. this clear-cut colorimetric method permitted the localization of the motor neurons in two nuclei of the ipsilateral brain stem. these are the nucleus ambiguus and the retrofacial nucleus. the primary sourc ... | 1975 | 53770 |
| intraaxonal and extraaxonal transport of 125i-tetanus toxin in early local tetanus. | the distribution of radioactivity in the sciatic nerve, the spinal ganglia, the ventral roots and the spinal cord was studied by means of histoautoradiography after injection of 125i-labelled tetanus toxin into gastrocnemius muscles of cats. in the sciatic nerve the major part of the radioactivity was found in the epineurium, but some axons also contained radioactivity. in the ventral root the radioactivity was strictly confined to a few axons; no radioactivity was found in other parts of the ve ... | 1975 | 53793 |
| the practice laboratory: the interpretation of blood smears. | | 1975 | 53937 |
| immunological and chemical correlation between alpha-fetoproteins from human and several mammalian species. | alpha-fetoproteins of several animals were purified and their molecular weights, amino acid compositions and peptide maps were compared, demonstrating the close similarities. these data indicated that the alpha-fetoproteins of mammalian species have closely related antigenical and chemical structures. rabbits and horses were immunized with human alpha-fetoprotein, and it was observed that the animals produced antibodies reaction not only with human alpha-fetoprotein but with their homologous alp ... | 1975 | 54014 |
| the effect of secretin on pentagastrin-stimulated secretion of gastric pepsin and acid in rats. | rats with chronic gastric fistulas were stimulated for 12 or 24 h with constant intravenous infusion of pentagastrin. when secretin was also infused for the last half period of the experiment, respectively, 6 or 12 h, the volume of gastric secretion and hcl output were significantly reduced but the concentration of pepsin was significantly increased. the dissociated effect of secretin on gastric acid and pepsin secretion reported previously in man, dog and cat was also found in the rat. | 1975 | 54057 |
| a method for studying the peripheral mediators of the dental pain induced by electrical stimulation. | a useful method is described in this paper for studying the mediators released from tooth pulp of the dog during the electrical stimulation of dentine. this method is based upon the perfusion of the pulp and superfusing the return continuously over the isolated, in cascade, cat jejunum and rat stomach fundus strip. the presented evidences in this study indicate the possibility of the release of bradykinin and prostaglandin - like materials from the tooth pulp during the electrical stimulation of ... | 1975 | 54134 |
| proceedings: influence of a physiological pumploading on isolated cat papillary muscle. | | 1975 | 54138 |
| proceedings: the effect of extracellular k on the ca action potential in the heart. | | 1975 | 54145 |
| reassessment of histochemistry of retinal glycogen. | | 1975 | 54261 |
| comparison between the effect of colchicine and lumicolchicine on axonal transport in rat motor neurons. | the mitotic inhibitor colchicine (col) and its isomer lumi-colchicine (lumi-col) were tested on the axonal transport of acetylcholine (ach), cholineacetyltransferase (cat) and ach-esterase (ache) in rat motor nerves in vivo. col was found to be far more effective in blocking axonal transport of all 3 substances than was an equimolar concentration (0.1 m) of lumi-col, when injected into the sciatic nerve. since col and lumi-col have similar properties as regards binding to cellular membranes, but ... | 1975 | 54407 |
| stereochemical analogs of a muscarinic, ganglionic stimulant. 2. cis and trans olefinic, epoxide, and cyclopropane analogs related to 4-(n-(3-chlorophenyl)carbamoyloxy]-2-butynyltrimethylammonium chloride (mcn-a-343). | preparation of analogs of 4-[n-(3-chlorophenyl) carbamoyloxy]-2-butynyltrimethylammonium chloride [1 (mcn-a-343)], cis- and trans-4-[n-(4-chlorophenyl)carbamoyloxy]-2-butenyltrimethylammonium iodides (5 and 6), and the corresponding epoxides and cyclopropanes is reported. pharmacological testing for ganglion-stimulating activity demonstrated that the trans olefin 6 and trans epoxide 8 have properties similar to 1, while the trans cyclopropane analog 10 was inactive. all cis compounds were inacti ... | 1976 | 54426 |
| stereochemical analogs of a muscarinic, ganglionic stimulant. 3. 2,3-substituted bicyclo(2.2.1)hept-5-enes and -heptanes related to 4-(n-(3-chlorophenyl)carbamoyloxy)-2-butynyltrimethylammonium chloride (mcn-a-343). | preparation of analogs of 4-[n-(3-chlorophenyl)carbamoyloxy]-2-butynyltrimethylammonium chloride (1, mcn-a-343), the isomeric 2-trimethylammoniomethyl-3-[n-(4-chlorophenyl)carbamoyloxymethyl]bicyclo [2.2.1]hept-5-ene iodides (10-13), and the corresponding -bicyclo[2.2.1]heptane iodides (14-17) are reported. none of the compounds demonstrated ganglion-stimulating activity similar to 1 or antagonized the effects of 1. | 1976 | 54427 |
| species and interspecies radioimmunoassays for rat type c virus p30: interviral comparisons and assay of human tumor extracts. | the major internal protein, p30, of rat type c virus (ralv) was purified and utilized to establish intra- and interspecies radioimmunoassays. three rat viruses were compared in homologous and heterologous intraspecies assays with no evidence of type specificity. the only heterologous viruses to give inhibition in these species assays were the feline (felv) and hamster (halv) type c viruses; these reactions were incomplete and required high virus concentrations. an interspecies assay using a goat ... | 1975 | 54444 |
| [ventricular fibrillation in acute phase of myocardial infarct. 1. relationship between the development of ventricular fibrillation in myocardial infarct and previous rhythm disorders]. | the author analyses the results of experimental studies in dogs and cats, that included a continuous recording of ecg, electrogram and monophase cardiac potentials during 1 hour following coronary artery ligation. the ligation caused bradycardia, but no correlation was found between the degree of bradycardia and the development of extrasystole and ventricular fibrillation. extrasystole developed in 100% of the experiments in which the coronary artery ligation resulted in ventricular fibrillation ... | 1975 | 54452 |
| letter: caliciviruses in man. | | 1976 | 54714 |
| tracing axons and axon collaterals of spinal neurons using intracellular injection of horseradish peroxidase. | intracellular injection and subsequent histochemical localization of horseradish peroxidase have been used to stain the soma, dendrites, axons, and axon collaterals of spinalcervical tract neurons and unidentified dorsal horn neurons in the cat. this technique may be used in combination with the intracellular injection of procion yellow to demonstrate by light microscopy connections between physiologically typed vertebrate neurons. | 1976 | 54936 |
| the use of the fink-heimer ii technique to stain degenerating peripheral nerve fibers. | | 1975 | 54959 |
| [toxicity of abate after inhalation]. | | 1975 | 54994 |
| recent advances on the neurophysiological bases of pain sensation. | | 1975 | 55061 |
| neutrophil granules: a review. | hematologists are familiar with the granules of leukocytes because they serve as a means of identification of certain white blood cells.19 it is now generally appreciated that the granules of neutrophilic polymorphonuclear leukocytes (pmn) store antibacterial agents and lysosomal enzymes until they are needed for the killing and digestion of phagocytized microorganisms.16 within the framework of this well-known setting, this article presents some new data on the mode of formation and chemical co ... | 1976 | 55073 |