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radiologic examination of the feline cardiovascular system. 1977141152
effect of ethanol on [3h]ouabain binding to different regions of the cat brain. 1977141318
activity of muscle spindle afferents during scratching in the cat. 1977141319
[3h]-ouabain binding to denervated and innervated skeletal muscle.in cat skeletal muscles, the major part of specific [3h]-ouabain binding was found in the sympathetic nerve endings of red, slow muscle fibres. skeletal muscle denervation increased specific [3h]-ouabain binding to muscle membrane preparation. this increase may be involved in the development of spontaneous fibrillation in the denervated muscle.1977141373
[the effects of dantrolene sodium on the nervous system (author's transl)].in order to investigate the effects of dantrolene sodium on the nervous system, the experiments were carried out on cats. 1. group ia spindle afferent discharges were suppressed in 6 out of 14 cases following application of the drug. the effect lasted for 20 to 90 minutes. 2. no significant effects were observed on spinal mono- and polysynaptic reflexes, nor was seen on interneurons. however, 3 out of 9 renshaw cells were facilitated and 3 were inhibited after dantrolene sodium application. 3. a ...1977141415
nervous outflow from skeletal muscle following chemical noxious stimulation.1. in order to determine the nervous outflow from skeletal muscle during chemically induced muscle pain, the impulse activity of various types of muscle afferents in response to close intra-arterial injections of pain-producing substances (bradykinin, 5-hydroxytryptamine, histamine and potassium) was studied in anaesthetized cats using a single fibre recording technique.2. by administration of algesic agents in doses which produce pain in man and pain reactions in animals, about half of the grou ...1977141496
static and dynamic fusimotor action on the response of ia fibres to low frequency sinusoidal stretching of widely ranging amplitude.1. single fusimotor fibres were stimulated repetitively to test their action on the responsiveness of muscle spindle primary endings in the cat soleus to sinusoidal stretching of both large and small amplitude. frequencies of 0.06-4 hz were used at amplitudes from 10 mum to 3 mm.2. the response was assessed by fitting a sinusoid to the cycle histogram of the afferent firing throughout the course of the cycle; this linear approximation measures the fundamental of the response and ignores any harm ...1977141497
effects of combining static and dynamic fusimotor stimulation on the response of the muscle spindle primary ending to sinusoidal stretching.1. a pair of fusimotor fibres, one static and the other dynamic, were stimulated simultaneously to test their combined action on the response of muscle spindle primary endings in the cat soleus to sinusoidal stretching. a frequency of 1 hz was chiefly used, with a wide range of amplitudes (10 micronm-2 mm). the response of the ending was assessed from the parameters of the sine fitted to its firing averaged throughout the course of the cycle; this was felt useful even though the responses to the ...1977141498
the response of cat muscle spindle primary sensory endings to stretch during infusion of suxamethonium [proceedings]. 1977141499
ia afferent activity during a variety of voluntary movements in the cat.1. implanted dorsal root electrodes were used to record discharge trains of single spindle primary afferents (ia's) of the cat's hind limb during different types of movement.2. the length of the ipsilateral ankle extensors was continuously monitored by an implanted length gauge. length changes occurring during active stepping were subsequently passively reproduced during brief anaesthesia.3. a comparison of the ia responses in active and simulated step cycles revealed that moderate fusimotor dri ...1977141504
[comparative autoradiographic and histochemical study of sulfated mucopolysaccharides of the placenta]. 1977141894
fast-conducting skeletofusimotor axons supplying intrafusal chain fibers in the cat peroneus tertius muscle.1. in six experiments on cat peroneus tertius muscle, from 12 to 23 motor axons with conduction velocities above 85 m/s were repetitively stimulated so as to produce glycogen depletion in the muscle fibers they innervated. 2. the whole muscle was then quick-frozen, serially cut, stained to demonstrate glycogen, and examined for intrafusal glycogen depletion. 3. zones of glycogen depletion were found in 27 of the 99 examined spindles: they were almost invariably located on chain fibers and specif ...1977142128
on the subdivision of static and dynamic fusimotor actions on the primary ending of the cat muscle spindle.1. using large ramp and triangular stretches a survey has been made of the effect of stimulating single gamma fusimotor fibres on primary endings of muscle spindles in the peroneus brevis to see whether 'intermediate' types of fusimotor action could be recognized, falling between the well known static and dynamic types. 2. responses were classified into six groups, as detailed on pp. 844-846, ranging from apparently 'pure' dynamic action (category i) to apparently 'pure' static action (category ...1977142145
the influence of group ii muscle afferents and low threshold skin afferents on dynamic fusimotor neurones to the triceps surae of the cat. 1977142539
[demonstration of interactions between visual and splanchnic afferences at the level of the cerebral cortex in cats].in the chloralose-anesthetized cats, evoked potentials (e.p) were recorded from cerebral cortex with the use of 1) macroelectrodes in two overlapping zones between splanchnic and visual areas : medial lateral and anterior suprasylvian (s ii) gyri ; 2) microelectrodes in medial lateral gyrus. our results show : 1) a strong increase of the primary visual e.p. in medial laternal gyrus by splanchnic stimulus ; 2) a strong inhibition of the primary splanchnic e.p. in s ii by visual stimulus ; 3) an i ...1977142561
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 ...1977142609
inhibition of release of corticotropin releasing hormone in cats by extremely small amounts of vasotocin injected into the third ventricle of the brain. evidence for the involvement of 5-hydroxytryptamine-containing neurons. 1977142630
the role or non-role of atpase activation by phenytoin in the stabilization of excitable membranes.the role or non-role of nak atpase, mg atpase, and camg atpase involvement in stabilization of excitable membranes by phenytoin is critically evaluated. there is no substantial evidence to indicate that the membrane-stabilizing effect of phenytoin is due to activation of the nak atpase. previous reports of activation of the nak atpase at low potassium and high sodium are probably not due to phenytoin but to a potassium contamination in the phenytoin solution. in vitro experiments do not provide ...1977142633
a new drug against paragonimus infection. 1977142651
role of glucocorticoids in an abnormal grooming behavior in cats with pontile or frontal neocortical lesions.cats with pontile or frontal neocortical lesions display a tactually elicited dissociation of appetitive and consummatory grooming behaviors. systemic administration of glucocorticoids abolished the abnormal grooming behavior in cats with lesions, even when the stimulatory effect of glucocorticoids on serotonin metabolism was blocked by administration of p-chlorophenylalanine (pcpa). microinjections of glucocorticoids into the superior colliculi also significantly decreased the abnormal grooming ...1977142779
prolonged survival in down's syndrome. 1977142847
[theoretical considerations on external cardiac work]. 1977142895
the effect of 6-hydroxydopamine on specific [3h]ouabain binding to some sympathetically innervated organs of the cat. 1977142904
the sensory reinnervation of hind limb muscles of the cat following denervation and de-efferentation. 1977142928
[effect of lithium on the energy metabolism of nervous tissue].lithium (0.5--4 mm) either significantly increase, either completely normalizers the intensity of the oxidative and energy metabolism of the brain mitochondria, decreased by the influence of the blood serum of patients with manic-depressive psychosis and attack like schizophrenia. at the same time lithium gives an insignificant increase in the intensity of processes of phosphorilation in cases of an action of the blood serum of patients with a continuous development of schizophrenia. processes o ...1977143178
ultrastructural effects of parachlorophenylalanine, 5-hydroxytryptamine and the imipramine group on the nerve processes of the small intestine.the structure of the nerve fibres in the chronically isolated cat ileum was studied by fluorescence and electron microscopy after imipramine group compounds, parachlorophenylalanine, and 5-hydroxytryptamine treatment. following treatment with parachlorophenylalanine and imipramine group compounds in the nerve fibres of the small intestine, specific granules were selectively decreased (p less than 0.001) in number. in concordance with ultrastructural observations, a marked diminution of fluoresce ...1978143185
pressure-induced hypertrophy of cat right ventricle. an evaluation with the force-interval relationship. 1977143351
contraction properties and fiber types of some forelimb and hind limb muscles in the cat. 1977143368
serotonin as a factor in depression of collateral blood flow following experimental arterial thrombosis.the relationship of serotonin to the inhibition of collateral blood flow was investigated. five cats, in which the aorta contained a 6 microgram injection of serotonin in a closed aortic segment exhibited depressed hindlimb blood flow. the serotonin effects were eliminated in three animals by pretreatment with cinarserin hcl, a serotonin antagonist. the caudal 1.5 cm of the aorta was occluded in 24 cats by a blood clot formed by injection of thromboplastin subsequent to ligation. eight of these ...1977143502
[k+]o clearance in cortex: a new analytical model.1. it has been suggested that passive diffusion is the principal mechanism of the clearance of locally elevated extracellular potassium, k+o, in the cerebral cortex. this concept was based on the assumption that elevated k+ could be modeled as a point source. in the present study, the functional role of passive diffusion was reevaluated in the anesthetized cat cortex following local electrical stimulation. 2. the initial spatial distribution of extracellular potassium activity, [k+]o, elevated b ...1977143510
responses of primary and secondary endings of isolated mammalian muscle spindles to sinusoidal length changes.1. responses of primary and secondary endings of isolated cat spindles to sinusoidal length changes have been recorded before and after block of impulse activity by tetrodotoxin. 2. primary endings may discharge with each cycle of sinusoidal stretch at 25-50 hz, with stretch amplitudes applied to the spindle poles as small as 1 micron. thresholds are higher at lower frequencies. 3. in primary endings, amplitude of the receptor potential varies with frequency and magnitude of sinusoidal stretch. ...1977143511
effects of fusimotor stimulation on the response of the secondary ending of the muscle spindle to sinusoidal stretching.1. the responsiveness of the spindle secondary ending to sinusoidal stretching has been studied using the soleus muscle of the anaesthetized cat. the sensitivity (impulses/sec firing per mm stretching) and the phase of the response were determined by computer averaging. the small linear range was studied at frequencies of 0.5-500 hz, and also the larger non-linear range at 1 hz.2. in the linear range, stimulation of single fusimotor fibres (which were presumed to be static axons) approximately h ...1977143527
studies on isolated subcellular components of cat pancreas. i. isolation and enzymatic characterization.pancreas of the cat was fractionated into its subcellular components by centrifugation through an exponential ficoll-sucrose density gradient in a zonal rotor. this enables a preparation of four fractions enriched in plasma membranes, endoplasmic reticulum, mitochondria and zymogen granules, respectively. the first fraction, enriched by 9- to 15-fold in the plasma membrane marker enzymes, hormone-stimulated adenylate cyclase, (na+k+)-atpase, and 5'-nucleotidase, is contaminated by membranes deri ...1977143536
comparative pathologic classification of malignant lymphomas. 1977143811
the pharmacological action of pronase-digested egg albumin upon cerebral hypoxia.the purification of a substance which protects mitochondrial activity against its decay in association with various cerebral pathologies, and the effect of this substance in vitro and in vivo have been mentioned. defatted egg albumin was hydrolyzed with pronase, and diafiltrated through mesh, to obtain fractions of molecular weight less than 5,000. the diafiltrate was further fractionated using sephadex g-25 column chromatography, and a fraction which had a protective action against the decay of ...1977143870
[distribution, uptake and hydrolysis of cholesterol oleate (-1-14c) in brain tissue after its injection in the cerebral ventricles of the conscious cat].distribution, uptake and hydrolysys of cholesteryl oleate (-1-14c) in vivo in the cat's brain were investigated. four hours following intraventricular injection of cholesteryl oleate (-1-14c), about one third of the injected radioactivity was taken up and about 50 % of that radioactive material was hydrolysed by brain tissue. even more, the labelled material was found in the brain tissue surrounding the cerebral ventricles as well as in the cerebral cortex, but in varying amounts: the smallest a ...1977143986
[spinal, thalamic and cortical levels of splanchno-splanchnic interactions].using the occlusion method, we have shown splanchno splanchnic interactions on spinal, thalamic and cortical cells in cat. 1. at the first level, splanchno splanchnic interactions concern only the cells located in the rexed v layer. the splanchnic fibres involved are small sized ones (agammadelta, b and c types). 2. at the second level, splanchno splanchnic interactions have been observed in the vpl nucleus. the latencies of responses suggest that only large fibres are concerned. 3. at the third ...1977143997
[identification of muscle spindles by direct and indirect electric stimulation of intrafusal muscle fibers].in two series of experiments on 25 anesthetized deefferented cats methods of quick identification of muscle spindles were used. the first method was based on the postcontractory sensory discharge in a muscle spindle after brief strong electrical stimulation of the muscle nerve. in another approach the concentric electrodes inserted into the muscle were used. if the intrafusal muscle fibers were selectively contracted by direct electrical stimulation the sensory discharge appeared without any inc ...1977144070
role of the claustrum in sensory activation.the functional organization of the claustrum was studied in acute experiments in cats from birth to adulthood. no somatotopic organization was found, but, on the contrary, multisensory convergence was confirmed. the significance of the claustrum for somesthetic and acoustic afferentation is emphasized. the claustrum is activated mainly by a "cortical loop", along the following route: the diencephalic nuclei (the relevant modality system) leads to cortical projection areas (including secondary an ...1977144285
the course of ionic transmembrane currents during cardiac action potentials.the course of the total transmembrane ionic current (ii) during a natural action potential (ap) was reconstructed from a family of current traces recorded for single voltage clamp depolarization steps to various levels. the experiments were performed on 9 papillary cat muscles driven at 0.5 per second in oxygenated 31 degrees c tyrode. under varying experimental conditions very good agreement was found between the resulting ii curve and another indicator of ii, the first time derivative of the a ...1977144288
mucopolysaccharidosis in a cat with arylsulfatase b deficiency: a model of maroteaux-lamy syndrome.a siamese cat that presented clinical signs similar to those seen in humans with mucopolysaccharidoses was studied. the animal excreted increased amounts of polymeric glycosaminoglycans in the urine, consisting almost entirely of dermatan sulfate. electron microscopy of circulating polymorphonuclear leukocytes revealed the presence of many membrane-bound lamellar inclusion bodies. sulfate incorporation studies with cultured skin fibroblasts indicated defective glycosaminoglycan degradation. thes ...1977144321
[digitalis problems--experimental findings and clinical practice]. 1977144369
laparoscopy for direct observation of internal organs of the domestic cat and dog. 1977144454
a possible mode of action of static fusimotor axons as revealed by system identification t:chniques. 1977144544
a study of mammalian intrafusal muscle fibres using a combined histochemical and ultrastructural technique.a direct correlation of the histochemical and ultrastructural properties of intrafusal muscle fibres has been achieved by cutting frozen serial sections for histochemical applications (15 micron thick sections) and for electron microscopy (60 micron thick sections) in a repeating sequence. three types of intrafusal fibre were recognized, including two types of nuclear-bag fibre, designated bag1 and bag2. in addition to histochemical and ultrastructural differences, the three types of fibre diffe ...1977142074
[renal perfusion during experimental hyper-acute rejection. 133-xenon perfusion compared with microscopy and angiography (author's transl)].twenty-two cat kidneys and 11 pig kidneys were incorporated into canine circulatory systems. the delayed hyper-acute and hyper-acute rejections produced by these models were studied with respect to blood flow and blood distribution with an intra-arterial 133-xenon wash-out technique at intervals of 7-30 minutes until the death of the kidney at 40 minutes to twelve hours. in addition, magnification angiograms and serial cortical biopsies were obtained for continuous histological study of the reje ...1977142048
[reaction of muscle spindles to changes in muscle blood supply]. 1977142004
neurotransmitter enzyme abnormalities in senile dementia. choline acetyltransferase and glutamic acid decarboxylase activities in necropsy brain tissue.reductions in 2 neurotransmitter synthesizing enzymes in brain, glutamic acid decarboxylase (gad) and choline acetyltransferase (cat), have been found in dementias of different origins, including senile dementia (alzheimer type). significant reductions in cerebral gad have also been found in depression (unipolar). the gad reductions did not generally appear to be localised in any specific region of the brain examined. however, the reduction of cat in the hippocampus, relative to reductions in ot ...1977144789
synaptic projections of single spindle afferents demonstrated by extracellular spike triggered averaging [proceedings]. 1977144794
a 'late supernormal period' in the recovery of excitability following an action potential in muscle spindle and tendon organ receptors.1. discharge patterns have been recorded from five types of stretch receptor; frog muscle spindles, lizard tendon organs, cat soleus tendon organs and primary and secondary endings of cat soleus muscle spindles.2. the fully adapted discharge of each type of receptor is irregular, especially for frog spindles and primary endings of cat spindles as compared with the other three types (the ;regularly firing' receptors). frog spindles and some cat spindle primary endings would maintain a discharge a ...1977144795
the use of biotyping of enterobacteriaceae as an evaluation of the isolation efficacy of laboratory animals.2 sets of data are given of biotyping the enterobacteriaceae from the faecal flora of spf rats and cats housed with different isolation arrangements. the method is presented as an evaluation of the isolation efficiency of laboratory animals. biotypes which were determined on almost every occasion belonged to the resident flora of the animals while those found occasionally represented contamination. contaminating bacteria are cleared from an spf breeding unit by colonization resistance and the co ...1977144828
[correction of bladder and urinary canal dysfunctions by using muscle and aponeurosis flaps from the anterior abdominal wall]. 1977145052
[visceral, vagal, and splanchnic projections in the region of the ventro-medial nucleus of the hypothalamus in cats].in anaesthetized cats, evoked or unitary potentials were produced in the hypothalamus by electrical stimulation of splanchnic and vagus nerves. responses were recorded bilaterally in an area corresponding to the median nucleus. they were greater for the splanchnic stimulation than for the vagal one. the stimulation parameters and the response latencies suggested that the afferent fibres involved belonged chiefly to b and c nerve components. from this preliminary study, it will be possible to ana ...1977145289
[role of onium groups in the interaction of asymmetric bis-cationic cholinomimetics with n-cholinoreceptors]. 1977145360
intrafusal branching and distribution of primary and secondary afferents [proceedings]. 1977145491
a system for intravascular, radially orientation-independent electromagnetic flow- and diameter-sensing.the difficulty of optimally orienting an intravascular loop probe of an extracorporeal field electromagnetic flow meter is circumvented by uniting 2 mutually perpendicular loop sensors into a single flow-diameter probe. when one of the loops is unfavorably oriented in the magnetic field, the orientations of the other loop is more favorable. the most unfavorable case is a 45 degrees angle between the magnetic field and the planes of the loops, when the signal drops to 70.7% of the optimal value. ...1977145583
function of cardiac sarcoplasmic reticulum following cardiopulmonary bypass in human subjects. 1976145644
[collateral circulations and new vessels in retinal branch vein occlusions (author's transl)]. 1977145842
airway occlusion pressure and respiratory nerve and muscle activity in studies of respiratory control. 1978145935
small-signal analysis of response of mammalian muscle spindles with fusimotor stimulation and a comparison with large-signal responses.1. response dynamics of primary and secondary muscle spindle endings to small-amplitude sinusoidal stretches were found to be unaltered by tonic repetitive stimulation of fusistatic or fusidynamic fibers. 2. overall sensitivity of these receptors is decreased by fusistatic stimulation and either unchanged, increased, or decreased by fusidynamic stimulation at rates of 75/s or greater. 3. in the case of primary endings, the results obtained with small-amplitude sinusoidal stretches are not compat ...1978146076
localization of sodium pump sites in cat salivary glands.1. cat submandibular glands were perfused with locke solution containing [3h]ouabain. in some experiments additional medium was given by retrograde intraductal injection. 2. [3h]ouabain binding sites were localized by light microscopical autoradiography and the findings compared with the electron micrographs. 3. the cells of the striated ducts were heavily labelled with [3h]ouabain, predominantly in the contraluminal parts. 4. at the acinar level moderate amounts of [3h]ouabain were found in rel ...1977146078
the activity of intrafusal muscle fibres during cortical stimulation in the cat [proceedings]. 1977146081
the activity of intrafusal muscle fibres in anaesthetized, decerebrate and spinal cats [proceedings]. 1977146085
activation of cat spindle secondary sensory endings by intravenous infusion of suxamethonium [proceedings]. 1977146087
functional evaluation of cardiac sarcoplasmic reticulum and mitochondria in human pathologic states. 1978146093
the striking similarity between myocardial disease in cats and man. 1978146143
raphe induced inhibition of intralaminar thalamic unitary activities and its blockade by para-chlorophenylalanine in cats.extracellular recordings were made of intralaminar thalamic neurones responding to stimulation of the radial nerves. the effects on this response of a conditioning stimulation of the median raphe nucleus were studied in both untreated and p-cpa pretreated cats. ninety-two percent of thalamic responses to somatic stimulation in untreated cats was inhibited by conditioning stimulation of the raphe nucleus. the intensities of conditioning stimulation required for the inhibition were significantly h ...1977146166
cardiac energetics. 1978146205
[cytochemical study of the different stages in the life cycle of toxoplasma gondii. viii. nucleic acid distribution in the parasites at developmental stages from the cat intestine and the problem of the systematic position of toxoplasma]. 1977146290
[cytochemical study of the different stages in the life cycle of toxoplasma gondii. ix. the polysaccharides and lipids in the parasites at developmental stages from the cat intestine].amylopectin was detected in all the stages examined. in the oval stages the minute granules of pas-positive material were seen in the cytoplasm when examined on fresh-frozen sections. in merozoites, amylopectin was more conspicuous with maturation. the residual body of microgametocytes contain large amounts of amylopectin; no polysaccharide was visualized in microgamete bodies. amylopectin was most abundant in macrogametocytes and zygotes. however, no peripheral position of pas-positive "plastic ...1977146291
[strabismus and pseudostrabismus (author's transl)].the method of clinical examination on binocular sensory-motor connection used in the children of less than three years of age for early detection of strabismus, is used in cats. a number of common and siamese cats were examined under the same conditions. the clinical results lead to the following conclusions: -- contrary to general opinion, siamese cats do not show strabismus and their binocular sensory-motor connection is well developed. -- the common cat does not show strabismus but demonstrat ...1977146474
[preliminary results on the splanchnico-laryngeal reflex in the cat].electrical stimulation of low threshold splanchnic afferent nerves in lightly anesthetized cat results in phrenic and recurrent laryngeal nerve responses. both phrenic and recurrent laryngeal inspiratory nerve activities are inhibited, whereas expiratory recurrent nerve activity is triggered and even increased. the significance of this reflex is discussed in relation to laryngeal adductor muscle contractions and the abdominal pressure increase.1977146547
[incidence of opisthorchiasis and diphyllobothriasis in the udmurt assr]. 1977146781
dermatologic problems of the canine and feline ear. 1978146818
normal cardiac myosin atpase and mechanics in pressure overload with digitalis treatment.cardiac muscle myosin atpase activity is depressed and contractile function impaired when the heart is subjected to a chronic pressure overload. administering digitalis in the presence of chronic pressure overload significantly attenuates the decline in mechanical function. the current study sought to determine if the cardiac muscle myosin atpase activity of cats treated with digitalis in the presence of pressure overload remains normal in parallel with the mechanical function. four groups of ca ...1978147032
effects of serotonin antagonists on digitalis-induced ventricular arrhythmias.the present study was performed to determine whether pharmacological blockade of serotonin receptors would counteract digitalis-induced ventricular arrhythmias. the effect of the serotonin receptor blocking drugs, methysergide, cinansersin, and cyproheptadine on ventricular arrhythmias produced by ouabain was studied in anesthetized dogs. each of the three serotonin receptor blocking drugs given as a bolus i.v. injection of 1.5--3.0 mg/kg produced an antiarrhythmic effect. in addition, methyserg ...1978147176
free autografting of entire limb muscles in the cat: histochemistry and biochemistry.fifty extensor digitorium longus muscles of 25 cats were autografted, 33 with and 17 without prior denervation. after 50 days, no significant differences were observed between predenervated and nonpredenervated autografts. autografted muscles weighed 48% of the weight of control muscles. few original muscle fibers survived and within 2 wk autografts contained regenerating muscle fibers. the mean cross-sectional area of muscle fibers in the autografts reached 125% of the value for control nontran ...1978147261
effects of carbamazepine on muscle spindle discharges.spinal and alpha-chloralose anesthetized cats were prepared for single unit recording from fibers originating in deefferented spindles of the triceps surae muscles. carbamazepine (cbz), 200 and 300 mg/kg, suspended in 1% methylcellulose in saline was administered i.p. and plasma concentrations were determined by gas liquid chromatography. stretch induced by a 500 g weight drop was used to evaluate spontaneous, static stretch, and poststretch spindle activity, while stretch induced by stimulation ...1978147337
identification of intrafusal muscle fibres activated by single fusimotor axons and injected with fluorescent dye in cat tenuissimus spindles.1. intrafusal muscle fibres of cat tenuissimus spindles have been injected with the fluorescent dye procion yellow and identified histologically after recording their changes in membrane potential during 1/sec stimulation of single static or dynamic gamma axons. 2. thirteen intrafusal muscle fibres innervated by static gamma axons were identified as eight bag2 and five chain fibres. the fact that none proved to be a bag1 fibre is not regarded as significant, for reasons given in the discussion. ...1978147339
inhibitory characteristics of lead chloride in sodium- and potassium- dependent adenosinetriphosphatase preparations derived from kidney, brain, and heart of several species.inhibition of adenosinetriphosphatase (atpase) by lead chloride (pbcl2) was studied in microsomal fractions or tissue homogenates of kidney, brain, and heart of several species, including humans. the concentration of pbcl2 causing 50% inhibition (i50) of na+ + k+ atpase activity varied from 8 x 10(-6) to 8 x 10(-5) m, depending on the species and organ of origin of the enzyme. the enzyme preparations derived from various parts of the kidney showed no differential sensitivity to pbcl2. these diff ...1978147349
[unloaded shortening velocity of the myocardium as an index of contractility (author's transl)].an experimental study attempts to clarify the reasons for a fashionable over- or underestimation of the unloaded shortening velocity of the myocardium (vmax) as an index of "contractility" in international cardiological literature. long-term investigations on the isolated myocardial preparation as well as on the heart in situ support our own position: 1. vmax of the myocardium is, without doubt, a value of greater relevance in muscle physiology independent of the interpretation related to the fu ...1978147382
stimulation of the hippocampus and its effect on electrographic manifestations of the brain in unrestrained rats.the dorsal hippocampus was electrically stimulated in unanaesthetized, unrestrained rats with a cobalt-gelatin rod in their cortex. the significance of the hippocampus in the elicitation of both physiological spontaneous rhythmic activity (episodic activity of 8--9/sec frequency bound, in rats, to a state of quiet wakefulness, and "sleep spindles") and pathological rhythmic activity of the self-sustained after-discharge (ssad) type was determined from the aspect of the eeg and behavioural charac ...1977147471
[destruction of a cadaver by insects]. 1978147528
specific and non-specific skin test reactions with animal dander extract.intradermal skin tests have been performed in atopic patients with allergenic extracts of different animal danders at uniform concentration. a high incidence of positive test was recorded which could not be related to the clinical histories, especially with the allergens of horse, cow and dog dander (nr). better correlation was observed with guinea pig and cat allergens (r). the incidence of nr reactions was highest in the house dust allergy group of patients; with the exception of horse dander ...1977147614
myelinated nerve fiber supply and muscle spindles in the respiratory muscles of cat: quantitative study.the present study was undertaken to provide quantitative data on the myelinated fibers of the phrenic and intercostal nerves and the number of spindles in the main respiratory muscles of the cat. the myelinated component of the phrenic and intercostal nerves was studied in the cat. histograms of sequency distributions as a function of nerve fiber diameter were established for normal nerves. certain nerves were then examined 35 to 40 days after excision of the dorsal spinal ganglia. the muscle sp ...1978147637
time-dependent alterations of myocardial microsomal yield and calcium accumulation in experimentally-induced right ventricular hypertrophy and failure. 1978147947
long systems of the dorsolateral fascicle: influence of afferentation from the splanchnic region.the influence of afferentation from the splanchnic region on the activity of long systems in the dorsolateral fascicle (dlf) was studied in chloralose-anaesthetized cats. ascending axons (the dorsal spinocerebellar tract, dsct and the spinocervical tract, sct) did not respond to splanchnic stimuli. conditioning from the splanchnic region modified their activity; the effect (mainly inhibitory) was strongest in the case of exteroceptive channels. the reaction of long propriospinal neurones depende ...1978148056
developmental patterns of peripheral nerve, myoneural junction and muscle: a review. 1977148071
[structure and histochemistry of myoepithelial cells in the apocrine skin glands of the domestic cat]. 1978148222
regional brain atrophy and reductions in glutamate release and uptake after intrastriatal kainic acid.1 neurochemical changes and tissue weights were measured following intrastriatal injection of 2.5 microgram of kainic acid in 2 microliter of 0.9% w/v nacl solution (saline) in the rat. 2 after kainic acid the striatum and neocortex on the injected side showed a progressive reduction in weight, the neocortex showing the greatest absolute weight loss and the striatum the greatest percentage change. 3 large (80-90%) reduction in choline acetyltransferase (cat) and l-glutamate decarboxylase (gad) a ...1978148306
the role of muscle spindle afferents in stretch and vibration reflexes of the soleus muscle of the decerebrate cat. 1978148313
frequency-response analysis of vestibular-induced neck reflex in cat. ii. functional significance of cervical afferents and polysynaptic descending pathways.1. three major inputs to cervical motoneurons were analyzed with frequency-response methods in decerebrate and unanesthetized cats: the afferent system including the gamma-loop, the vestibulospinal tract, and some polysynaptic tract that transmits vestibular influences in the vestibulocollic reflex. 2. the dorsal roots c1-c4 were cut in order to open the feedback loop through the gamma-fiber spindle-afferent system. no effects were observed on the gain and the phase lag of motor-unit response. h ...1978148496
autogenetic reflex action on to gamma motoneurones by stretch of triceps surae in the decerebrated cat.1. tonically firing gamma motoneurones of known conduction velocity (total eighty-seven, range 15-43 m/sec) have been isolated in peripheral muscular nerves to triceps surae. their responses to stretch of triceps surae have been studied in decerebrated cats. a small amplitude, quick stretch and release was used to provide a selective stimulus for primary endings of muscle spindles. 2. to check the selectivity, recordings were made from 135 afferents from triceps surae under conditions closely si ...1978148510
effect of diazepam on the gamma motor system indicated by the responses of the muscle spindle of the triceps surae muscle of the decerebrate cat to the muscle stretch.the experiments were performed on 37 intercollicularly decerebrate cats. the triceps surae muscle was subjected to trapezoidal stretches of 10 mm/s or 2 mm/s over a length of 14 mm. the reflex arc was left partially or fully intact. the effect of diazepam given intravenously on the discharge frequencies of group ia afferent fibres from muscle spindles in the belly of the triceps surae muscle was studied. diazepam depressed both the dynamic and the static gamma motor responses. when gamma motor f ...1978148591
[responses to the spindles of "fast" and "slow" muscles to mechanical stimulation in the presence of hypokinesia].the activity of muscle spindles was investigated in fast (extensor digitorum longus) and "slow" (soleus) muscles of the cat hind limb 2-5 weeks after immobilization. the spontaneous activity of spindles in both muscles remained unchanged. the background activity, the frequency of dynamic and static phases of stretching in primary as well as in secondary endings was much higher in immobilized muscle than in control. this increase in spindle activity was more pronounced in the "slow" muscle.1978148595
[cytochemical study of various stages of life cycle of toxoplasma gondii. 10. phosphatases in the parasites during developmental stages in cat's intestines].several methods of acid and alkaline phosphatese and atpase detection using both natural and artificial substrates were applied to the intestinal stages of toxoplasma gondii with negative results to reveal enzymatic activity in all the stages except the microgametocyte. possible explanation of this unexpected phenomenon is discussed taking into account host-parasite relationships with intestinal stages of toxoplasma and with coccidia in general.1978148759
[stress-free contraction rate of the myocardium as a degree of contractility. predictive capacity and error rating of a muscle physiological parameter]. 1977148803
cerebral aterial spasm. i. adrenergic mechanism in experimental cerebral vasospasm.this study demonstrates that an adrenergic mechanism plays an important role in producing the delayed cerebral vasospasm which follows subarachnoid hemorrhage. results were as follows: 1. experimental subarachnoid hemorrhage (sah) was produced by injection of fresh arterial blood into the cisterna magna in cats. the cerebral vasospasm was shown angiographically to be biphasic in nature: immediate constriction lasting 1 h and marked prolonged spasm occurring between the 3rd and 5th day after sah. ...1978148833
[3h]-ouabain binding to peripheral organs of cats: effect of ethanol.1 the specific [3h]-ouabain binding to microsomal fractions derived from cat heart, liver, spleen, and kidney increased significantly following chronic administration of ethanol. 2 since ouabain binds exclusively to cell membrane (na+ + k+)-adenosine triphosphatase ((na+ + k+)-atpase), these results provide evidence for an increase in number of (na+ + k+)-atpase macromolecules during chronic alcoholism. 3 the importance of the increase in number of (na+ + k+)-atpase molecules in the adaptive inc ...1978148933
[reticular activation by splanchnic afferents: its influence on visual projections at the level of the cerebral cortex in cats].in an previous work, we have shown a strong increase of visual evoked potentials of the medial lateral gyrus by splanchnic stimulation. this present study demonstrates that this effect is due to the activation of the substantia reticularis. actually, we observed: 1) an increase of the reticular visual potential by splanchnic stimulus in convergent zone; 2) an increase of the visual evoked potential in the primary cortical area by stimulation of this reticular formation. these results show the ex ...1977148947
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