| isolation of types i and v collagens from carp muscle. | 1. the major constituent of carp intramuscular connective tissue was found to be type i collagen. 2. a collagen homologous to type v collagen of higher vertebrate was also isolated from carp muscle. 3. relative portion of type v collagen was higher in carp muscle than in mammalian muscles. | 1988 | 3396321 |
| [a case of acute renal failure after eating the raw gallbladder of a carp]. | | 1988 | 3373090 |
| [reaction of the carp cyprinus carpio l. at different periods of its ontogeny to the action of organophosphorus compounds]. | effect of some organic phosphorous compounds on the carp cyprinus carpio l. in consecutive stages of its development has been studied. the least and most vulnerable stages in carp's development under the action of these compounds have been identified. the gravity of disorders in fish organism on early stages and the degree of pathological changes induced by organic phosphorous compounds have been shown. embryotoxic and gonadotoxic effect of these compounds has been found. | 1988 | 3358968 |
| a study of the hydration and thermodynamics of warm-water and cold-water fish collagens. | the hydrated volumes, vh, of collagens extracted from various fish species were calculated by using the simha-einstein equation, and it was found that the hydration of warm-water fish collagen is greater than that of cold-water fish collagen (halibut). although the intrinsic viscosities of warm-water fish (bigeye-tuna, carp and catfish) collagens are almost the same, the hydrated volume of bigeye-tuna collagen is approx. 1.5 and 3 times those of carp and catfish collagens respectively. the exten ... | 1988 | 3342002 |
| gabaergic inhibition on dopamine cells of the fish retina: a [3h]dopamine release study with isolated fractions. | inner retinal cells including dopamine (da) cells were isolated and fractionated from the carp (cyprinus carpio) retina by an enzyme cell dissociation and metrizamide gradient centrifugation method. when gamma-aminobutyric acid (gaba) antagonists (bicuculline and picrotoxin) were added into the perfusate over such a cell fraction, they stimulated the release of [3h]da which had been preloaded in the cell fraction. the action of gaba antagonists was dose and ca2+ dependent. their minimal effectiv ... | 1988 | 3335837 |
| effects of [d-arg6, trp7, leu8, pro9net]-luteinizing hormone-releasing hormone (sgnrh-a) and [d-ala6, pro9net]-luteinizing hormone-releasing hormone (lhrh-a), in combination with pimozide or domperidone, on gonadotropin release and ovulation in the chinese loach and common carp. | the effects of lhrh-a and sgnrh-a alone and in combination with the dopamine receptor antagonists pimozide (pim) and domperidone (dom) on stimulation of gonadotropin (gth) secretion and ovulation in chinese loach (paramisgurnus dabryanus) and common carp (cyprinus carpio) were studied. when tested in the absence of a dopamine receptor antagonist, sgnrh-a was about 10-fold more potent than lhrh-a in stimulating gth secretion in loach, whereas these peptides were of similar effectiveness in common ... | 1988 | 3282976 |
| [study on ldh isoenzymes of hybrid yue-carp and its parents]. | | 1988 | 3273660 |
| effects of various oxygen concentrations on antioxidant enzymes and the quantity of tissue phospholipid fatty acids in the carp. | analyses were made of the phsopholipid fatty acids and the antioxidant enzymes in the carp (cyprinus carpio morpha) at three different oxygen concentrations, corresponding to hyperoxia, hypoxia and anoxia. variations of the oxygen concentration were found to influence the quantities of phsopholipid fatty acids, as well as the antioxidant enzyme activities. in hyperoxia and hypoxia the amount of polyunsaturated fatty acids in carp liver was higher than in anoxia, but in other tissues there was no ... | 1988 | 3254009 |
| comparative histochemistry of the mucoproteic cells of the hypophysis from rhamdia hilarii, hypostomus punctatus, prochilodus scrofa and cyprinus carpio (teleostei). immunohistochemical identification of the gonadotropic cells. | adenohypophyseal cells showing positive histochemical reactions for mucosubstances were classified as type i-iv in hypostomus (plecostomus) punctatus (loricariidae), rhamdia hilarii (pimelolidae), prochilodus scrofa (prochilodontidae) and cyprinus carpio (cyprinidae) according to cell shape, size, cytological characteristics and adenohypophyseal distribution. cell types i and ii are common to the four species, with each cell type showing very similar cytological and histochemical characteristics ... | 1988 | 3242625 |
| effects of dopamine on spatial properties of horizontal cell responses in the carp retina. | | 1988 | 3231368 |
| [rhythmic activity of the olfactory bulb of the carp under nembutal anesthesia]. | the effect of nembutal intraperitoneal injections upon the induced waves and orthodromic potentials of the olfactory bulb (ob) induced by odor stimulation and paired electric stimuli of the olfactory nerve was examined in immobilized by diplacine carp (cyprinus carpio l.). the nembutal anesthesia resulted in a gradual decrease in frequency of induced waves tested by orthodromic response and amplitude of spontaneous electric activity ob ob. the changes found under nembutal anesthesia in evoked el ... | 1988 | 3219368 |
| ultrastructural analysis of leucocyte interaction with tumour targets in a teleost, cyprinus carpio l. | the first step in natural killer activity, target cell binding, was investigated ultrastructurally in order to identify presumptive cytotoxic cells. after incubation of unfractioned peripheral blood cells of the carp, cyprinus carpio l., with hela tumour cells as targets, regular conjugate forming was observed. targets were surrounded by cells bearing features either of lymphocyte or monocyte/macrophage types. cells with the usual lymphocytic characteristics contained acid phosphatase positive g ... | 1988 | 3208960 |
| isolation and partial characterization of igm-like immunoglobulins from the serum of carp (cyprinus carpio l.), frog (rana ridibunda pall.) and tortoise (testudo graeca pall.). | 1. igm-like immunoglobulin fractions have been isolated by combinations of precipitation procedures and gel-filtration from the serum of three vertebrate species, representative of the classes of pisces (cyprinus carpio l.), amphibia (rana ridibunda pall.) and reptilia (testudo graeca pall.). 2. the homogeneity of the isolated fractions has been confirmed electrophoretically and immunoelectrophoretically. 3. electrophoretic mobility of igm, similar for the three species studied has been observed ... | 1988 | 3132346 |
| the effects of reserpine and lhrh or salmon gnrh analogues on gonadotropin release, ovulation and spermiation in common carp (cyprinus carpio l.). | the effects of reserpine (catecholamine depletor) and lhrh analogues on gonadotropin secretion, spermiation and ovulation of common carp were investigated. injections of reserpine alone at a dose of 1 or 7 mg/kg of body weight stimulated spermiation, and reserpine at a dose of 1 mg/kg of body weight in combination with (d-arg6, trp7, leu8, pro9, net)-lhrh (s-gnrh-a) or with (d-ala6, pro9)-lhrh (lhrh-a) at a dose of 50 micrograms/kg of body weight caused an increase of plasma gonadotropin levels, ... | 1988 | 3072624 |
| calcium action potentials in retinal cells of the carp. | | 1988 | 3068589 |
| electrocardiograms in five bipolar leads recorded from the body surface of three fish species (cyprinus carpio, oreochromis niloticus and pagrus major) in fresh or sea-water. | 1. ecgs were recorded using five bipolar leads from the body surface of porgy pagrus major and tilapia oreochromis niloticus in fresh or sea-water, or held on a dry towel. 2. the maximum qrs amplitude was detected in lead v in both species being 54 +/- 25 microv in porgy and 241 +/- 78 microv in tilapia, respectively, when the fish were held on the dry towel. 3. clear ecg waves could not be obtained from porgy in sea-water because of the porgy's small cardiac potential and leakage of the potenti ... | 1988 | 2907442 |
| effects of a high concentration of co2 on electrocardiograms in the carp, cyprinus carpio. | 1. the effects of a high concentration of co2 (pco2 = 250 mmhg and po2 = 360 mmhg in water) and ms222 (tricaine methanesulfonate, 1/8000 or 1/5000) on the electrocardiogram (ecg) in carp were examined using five kinds of bipolar leads from the body surface. 2. in the carp anesthetized with the high concentration of co2 for 30 min, the qrs duration, pq interval and and direction of the qrs axis on the frontal plane significantly changed. even after recovery from anesthesia, delay in the qrs durat ... | 1988 | 2907441 |
| effects of metal ions on the antioxidant enzyme activities, protein contents and lipid peroxidation of carp tissues. | 1. studies were performed regarding the effects of cuso4 in concentrations of 5, 10, 25 and 50 ppm and znso4 in concentrations of 10 and 100 ppm on the antioxidant enzyme activities, lipid peroxidation and protein contents of tissues of common carp (cyprinus carpio morpha l.) exposed to these pollutants for 24 hr. 2. the results demonstrated that cuso4 was more toxic than znso4 and that both treatments brought about significant changes in these parameters in carp hepatopancreas (liver), gill and ... | 1988 | 2904875 |
| the effect of isoprenaline on the phospholipid content of the compact and spongious musculature of the carp ventricular myocardium. | 1. after a single injection of 40 mg kg-1 of isoprenaline to the carp, lysophospholipids appear in the tissue of the heart ventricle, ethanolamine plasmalogens increase and choline plasmalogens decrease; phosphatidylinositol is lowered in the spongious layer only. 2. daily administration of 5 mg kg-1 of the drug leads, after 5 doses, to a dramatic decrease of the diphosphatidylglycerol content; during the subsequent 5 and 10 doses a return to normal values occurs. shifts in plasmalogens are simi ... | 1988 | 2904868 |
| [effect of baclofen and muscimol on the evoked potentials of the tectum mesencephali in the carp in response to stimulation of the visual and somatosensory afferent inputs]. | the perfusion of (+/-) 10(-5) m baclofen to the optic tectum of the carp greatly reduced evoked potential to the optic nerve stimulation and slightly inhibited evoked potential to the spinal cord stimulation. the perfusion of 10(-4) m muscimol reduced the former evoked potential as well as the latter one. the results permit supposing that tectal visual input is more sensitive to the presynaptic inhibitory influences through gabab-receptors than the somatosensory afferent input. | 1988 | 2854884 |
| studies on the linkage between spin equilibria and protein structure in carp ferric hemoglobin. | the effects of protein conformation on the spin-state equilibria of several derivatives of carp hemoglobin have been examined. this has been done by measuring the ph dependence of the paramagnetic susceptibilities of these derivatives in the presence and absence of inositol hexakisphosphate, p6-inositol. in all cases the addition of p6-inositol at low ph and the lowering of the ph in the presence of p6-inositol shift the spin-state equilibrium in favor of the high-spin electronic configuration. ... | 1987 | 2822419 |
| myxosporea: a new look at long-known parasites of fish. | with the identification of myxosporea as agents of swimbladder inflammation (sbi) in carp, and proliferative kidney disease (pkd) in salmonids, this group of over 1000 protistan species has been receiving renewed attention. almost all species are parasites offish, and some can cause serious losses in commercial fish farms. yet adequate control measures cannot be planned without clarification of basic features of the parasites' life cycles and modes of transmission. in this article, jiri lom revi ... | 1987 | 15462878 |
| the effect of shape and position of the oxygen equilibrium curve on extraction and ventilation requirement in fishes. | the effects of haemoglobin-oxygen affinity and of cooperativity in oxygen binding on the oxygen extraction and ventilation requirement in fish are analysed using the mathematical model of malte and weber (1985). it is shown that a high affinity may allow a substantial reduction in ventilatory requirement and that optimal o2 uptake depends on a delicate balance between affinity and cooperativity. using p50 and nh values from the literature, the oxygen extraction values predicted by the model for ... | 1987 | 3671901 |
| unknown syndrome: abnormal facies, congenital heart defects, hypothyroidism, and severe retardation. | we present a female infant with (1) abnormal facies: microcephaly, blepharophimosis, small, low set, posteriorly rotated ears, bulbous nose, carp shaped mouth, micrognathia; (2) congenital heart abnormalities: large atrial and ventricular septal defects; (3) congenital hypothyroidism; (4) severe global retardation. | 1987 | 3430551 |
| the temporal sequence of changes in oocyte maturation and ovarian steroid hormone production during induced ovulation in the common carp, cyprinus carpio. | oocytes taken from carp sacrificed 3-24 hr after injection with either carp hypophysial homogenate (chh) (primed) or saline (control) were incubated with or without chh for 24 hr at 20 degrees. in oocytes from the primed fish the percentage of peripheral germinal vesicles at sacrifice progressively increased with time from injection. no such change occurred in control fish. after incubation with chh, tissue from primed fish showed a progressive increase in oocyte maturity with increasing time be ... | 1987 | 3428561 |
| ultrastructural demonstration that melanin-concentrating hormone-like and alpha-melanocyte-stimulating hormone-like immunoreactive molecules coexist in the same neurosecretory granules. | using immunocytochemical methods at the electron microscope level, immunoreactivity for both melanin-concentrating hormone (mch) and alpha-melanocyte-stimulating hormone (alpha-msh) has been demonstrated in the carp neurohypophysis. a double-labelling technique, using colloidal gold probes of different sizes showed that immunoreactivity to both molecules coexists within the same neurosecretory granules in some neurones, while in other neurones the granules exhibit only mch-like immunoreactivity. ... | 1987 | 3683983 |
| microhabitat use in a mediterranean riverine fish assemblage : fishes of the lower matarraña. | over a 22 month period barbus graellsii, chondrostoma toxostoma, cyprinus carpio, esox lucius, gobio gobio, and leuciscus cephalus displayed non-random microhabitat use in the rio mattarraña, spain and generally were overrepresented in deep microhabitats with low or undetectable flow velocities. substrate composition did not strongly affect microhabitat use outside of its covariation with depth and velocity. most seasonal differences in microhabitat use were attributable to seasonal changes in m ... | 1987 | 28311964 |
| accumulation of pesticides in the organs of carp, cyprinus carpio l., at 4 degrees and 20 degrees c. | | 1987 | 3663990 |
| [determination of the number of tissue compatibility genes in the carp using the transplantation test in the third generation of induced gynogenesis]. | transplantations have been carried out of anal fin in carp individual progeny of the third consecutive generation of induced gynogenesis. the part of grafts accepted made 19.4 +/- 5.0% (71 transplantations have been carried out). with the data obtained, an approximate quantity of histocompatible genes has been determined in carp which amounted to 32. calculation has been done on the basis of the assumption that the part of histocompatible genes being in homozygous state in the given progeny equa ... | 1987 | 3121444 |
| regulation of dopamine release from interplexiform cell processes in the outer plexiform layer of the carp retina. | the gamma-aminobutyric acid (gaba) antagonists bicuculline and picrotoxin stimulate a four- to fivefold increase in endogenous dopamine release from isolated intact carp retina. the release evoked by these agents is ca2+ dependent, a finding suggesting a vesicular release. using light microscopic autoradiography, we have localized the sites of dopamine release to the dopaminergic interplexiform cell processes of the outer plexiform layer, which synapse onto horizontal cells. our findings support ... | 1987 | 3039059 |
| toxicity of crude oil to the metabolism of freshwater minor carp, puntius sophore. | | 1987 | 3663971 |
| mechanoreceptor activity in the gills of the carp. ii. gill arch proprioceptors. | the presence of gill arch proprioceptors in the gills of a teleost, cyprinus carpio l., is demonstrated and their firing characteristics are analysed. spontaneous activity of gill arch proprioceptors was recorded from epibranchial ganglia. in paralysed fish the mean discharge rate for 16 receptors ranged from 11.3 impulses x sec-1 (sd 0.3) to 25.7 impulses x sec-1 (sd 0.4). the discharge rate could be influenced by displacement of the main elements of the respiratory pumping system. the receptor ... | 1987 | 3629008 |
| mechanoreceptor activity in the gills of the carp. i. gill filament and gill raker mechanoreceptors. | physiological properties of gill filament and gill raker mechanoreceptors in the gills of spontaneously breathing carp, cyprinus carpio l., were analysed. stroking stimuli applied to gill filaments elicited a phasic mechanoreceptive response, which was recorded from neurons in the epibranchial ganglia. sustained deflection resulted in a short on-off response. the same neurons were also activated by slight movements of lamellae on a gill filament. the receptive field extended over all the lamella ... | 1987 | 3629007 |
| [chloromyxum barbi (myxosporea) in hypophthalmichthys molitrix (osteichthyes)]. | during an investigation of h. molitrix yearlings from the district of cottbus in the gdr the myxosporidian chloromyxum barbi dogel', 1934 was found in the gallbladder (not recorded before in the gdr). ch. barbi was found to be a new parasite of the silver carp. | 1987 | 3122603 |
| [physiopathologic data on the action of selected fungicides and herbicides in carp]. | | 1987 | 3675117 |
| [rhythmic activity of the endbrain in the carp evoked by adequate visual stimulation]. | in acute experiments on immobilized carps, under dark adaptation conditions, studies have been made on the electrical activity of the telencephalon and midbrain tectum. it was found that in the latter photostimulation evokes local rhythmic activity which includes fast (30-50 hz) phasic (200-300 ms) and slow (8-14 hz) tonic (up to 3-4 s) components. high rhythm of this activity may be observed only in "healthy" preparations, coinciding with on-rhythm in the midbrain tectum. low rhythm does not de ... | 2013 | 3673369 |
| [cation exchange in the crucian carp in media with various ion compositions]. | | 1987 | 3666211 |
| [effect of prolactin on the phospholipid composition and cholesterol level in liver microsomes of the carp during acclimation to different temperatures]. | the phospholipid composition, content of cholesterol and its esters in the carp (cyprinus carpio l.) liver microsomes depend on the environmental temperature. the free cholesterol amount and cholesterol/phospholipids ratio in microsomes decrease after the lowering of temperature from 20 to 5 degrees c. the temperature elevation to 30 degrees c results in an increase of the cholesterol ester content. the relative proportions of phosphatidyl choline, phosphatidyl ethanolamine, sphingomyelin, phosp ... | 2015 | 3629731 |
| testicular tumors in carp-funa hybrid: annual cycle and effect on a wild population. | this study documents the occurrence of testicular tumors in a wild population of carp-funa hybrids. the most prevalent tumor was a dysgerminoma. there were lower prevalences of seminomas, leiomyomas, sertoli cell tumors, and spermatocytic seminomas. sex-ratio, gonadosomic index (gi) and the prevalence of tumors in the monthly catch was analysed for five consecutive reproduction periods (1980 to 1984). gonadal tumors were found only in males. this may be important to the population dynamics of th ... | 1987 | 3625900 |
| [radiological lesions of the hands in rheumatoid arthritis with rheumatoid factors and antinuclear antibodies]. | hand radiograms of 119 consecutive patients affected with rheumatoid arthritis (ra) were examined. the patients were distributed in different groups: 46 with (rf+) and 73 without (rf-) rheumatoid factor; 23 with (ana+) and 96 without (ana-) antinuclear antibodies. we found that rf+ group significantly differs from the rf- in order to the presence of symmetrical erosions of proximal interphalangeal joints (pip) and the presence of monolateral erosions of metacarpophalangeal joints (mcp), particul ... | 2016 | 3499656 |
| dendritic morphology of indoleamine cells revealed by intracellular injection of lucifer yellow in fixed carp retina. | the dendritic morphology of indoleamine amacrine cells in carp retina was investigated by identifying their fluorescent cell bodies by preloading with noradrenaline followed by iontophoretic injection of lucifer yellow in isolated and aldehyde-fixed preparations under microscopic control. although two subpopulations of serotonin-like immunoreactive amacrine cells (small and large in soma size) were found, small cells were not seen in aldehyde-fixed preparations. cells preloaded with noradrenalin ... | 1987 | 2888047 |
| effects of carp hypophyseal homogenate doses, incubation times, and temperatures on carp oocyte maturation and steroidogenesis in vitro. | ovarian tissue from carp which had received injections of either saline or carp hypophyseal homogenate (chh) 24 hr prior to sacrifice was incubated for 8, 16, or 24 hr at 4, 15, 20, or 25 degrees with 0, 30, 100, or 200 micrograms chh. 17,20 beta-dihydroxy-4-pregnen-3-one (17,20 beta p) was produced only by chh-primed tissue, but there was no difference between the two groups in production of testosterone, 17-hydroxyprogesterone, or testosterone glucuronide. production of all steroids was greate ... | 1987 | 3609705 |
| the relation between pituitary gland and thyroid growth during the lifespan of the annual fish cynolebias whitei and nothobranchius korthausae: gonadotropic and thyrotropic cells. | in the annual cyprinodont cynolebias whitei the cell types responsible for the increase of pituitary growth at the onset of maturation and for pituitary hyperplasia in old specimens were identified as gonadotropic cells and thyrotropic cells, respectively. the gonadotropic cells showed a high affinity to anti-carp alpha beta-gth serum, both at light- and electron-microscopical levels. the allometric relation of total gonadotropic cell volume to body length, determined for fish from six weeks up ... | 1987 | 3607854 |
| effect of gamma-hexachlorocyclohexane (lindane) on carp (cyprinus carpio). ii. effects of chronic intoxication on blood, liver enzymes, and muscle plasmic membrane. | a 30-day ingestion of gamma-hexachlorocyclohexane (lindane) by carp (cyprinus carpio) induced hypoglycemia without activation of two hepatic gluconeogenesis enzymes (fructose diphosphatase, ec 4.1.2.13, and glucose-6-phosphatase, ec 3.1.3.9) and hyponatremia and variations in muscle plasmic membrane-bound enzymes (especially cholinesterases, ec 3.1.1.7). after 109 days carps exhibited a decrease in natremia but no significant hypoglycemia. there was an activation of gluconeogenesis enzymes. impo ... | 1987 | 2440661 |
| [effect of thyroxin on the functional state of the respiratory chain in liver mitochondria of the carp cyprinus carpio during acclimatization to changes in water temperature]. | it has been demonstrated that oxidative phosphorylation in liver mitochondria of the carps which were kept within a week at 5 and 25 degrees c remains unaffected by the addition of 0.5 micron thyroxin to the incubation medium. addition of thyroxin (0.5 micron) to mitochondrial suspension prepared from the liver of carps acclimated within a week at 20 and especially 25 degrees c, resulted in uncoupling of respiration and phosphorylation. daily injections of thyroxin within a week (2 mu kg per 1 g ... | 2013 | 3618015 |
| primary structure of common carp prolactins. | the complete amino acid sequence of common carp (cyprinus carpio) prolactin (prl) has been determined. one milligram of carp prl was reduced, carboxymethylated, and then cleaved with cyanogen bromide and several enzymes. another milligram of carp prl was digested with lysyl endopeptidase. the resulting fragments were separated by reverse-phase high-performance liquid chromatography and subjected to sequence analysis by the automatic edman method with a gas-liquid sequencer and the manual dns-edm ... | 1987 | 3582956 |
| chemical modification of histidine, tyrosine, tryptophan and cysteine residues in carp (cyprinus carpio) muscle enolase. | enolase from carp (cyprinus carpio) muscle was modified by diethylpyrocarbonate, tetranitromethane, n-bromosuccinimide and 5,5'-dithiobis(2-nitrobenzoic acid). the extent and rate of modification and its effect on the enzyme activity were determined. modification of histidine, tyrosine and tryptophan residues caused complete inactivation of the enzyme; mg2+ as well as 2-phosphoglycerate markedly altered the rates of modification and inactivation. the above-mentioned amino acid residues seem to b ... | 1987 | 3454643 |
| [qualitative and quantitative distribution of 7 enzymes in organs of the rainbow trout (salmo gairdneri r.) and the carp (cyprinus carpio)]. | | 1987 | 3113116 |
| paradoxical induction of dopaminergic cells following intravitreal injection of high doses of 6-hydroxydopamine in juvenile carp retina. | histofluorescence studies were conducted on two groups of juvenile carp (body length, 12.7 and 6.6 cm on the average, respectively) during certain periods (3-11 months) of retinal growth, to evaluate the destructive effect of 6-hydroxydopamine on dopaminergic and indoleamine-accumulating cells. within a certain range of doses (0.1-5.0 micrograms/eye) of the neurotoxin injected intravitreally, it was found to destroy both classes of cells in a dose-dependent manner: more cells disappeared with hi ... | 1987 | 3109692 |
| dielectric, haematological and biochemical studies of detergent toxicity in fish blood. | blood characteristics in dielectric, haematological and biochemical terms of the fish cyprinus carpio exposed to a sublethal concentration of sodium alkyl benzene sulphonate were compared with those from untreated control fish; recovery from the test solution was also checked. trends of change in the majority of chosen parameters of blood with time of fish exposure to anionic detergent were significantly linear. a decline was noted in erythrocyte count, haematocrit, blood haemoglobin concentrati ... | 1987 | 3035591 |
| [subcellular localization of glutamine synthetase activity in carp muscle tissue and liver]. | subcellular distribution of the glutaminesynthetase activity (ec 6.3.1.2) is studied in muscle tissue and liver of carp. it is established that this activity is distributed by subcellular fractions analogously to the glutamatedehydrogenase activity--enzyme-marker activity of mitochondria. an additional evidence for the association of the two given enzymes is obtained during equilibrium density-gradient centrifugation of mitochondria on 30-60% gradient of sorbitol. comparison of the obtained resu ... | 2015 | 2885952 |
| calcium action potential and its use for measurement of reversal potentials of horizontal cell responses in carp retina. | 1. in the carp retina perfused with a solution containing high-ca2+, ba2+ and some k+-channel blockers, the horizontal cell produced a regenerative ca2+ action potential when the cell was depolarized by bath application of l-glutamate (glu) or l-aspartate (asp). the action potential was triggered also by a transretinal electrical stimulation which evoked an e.p.s.p. in the horizontal cell. in this solution, some cells produced the action potential spontaneously. 2. the action potential had an ov ... | 1987 | 2445962 |
| pink lateral muscle in the carp (cyprinus carpio l.): histochemical properties and myosin composition. | the pink muscle of the carp differs from the white (and red) muscle not only histochemically but also in its myosin isoform, as shown by peptide maps of the myosin heavy chains. results of an electrophoretic analysis of myosins are discussed in the light of their immunohistochemical properties and histochemical atpase activity. | 1987 | 2952520 |
| development of heterologous radioimmunoassay for indian carp and murrel gonadotropin hormone. | | 1987 | 3653929 |
| bioconcentration of alcohol ethoxylates in carp (cyprinus carpio). | the uptake, distribution, and clearance of three labeled nonionic surfactants, 14c-labeled dodecyl tetra(oxyethylene) ether [14c-c12-ae(4)], 14c-labeled dodecyl octa(oxyethylene) ether [14c-c12-ae(8)], and 14c-labeled dodecyl hexadeca(oxyethylene) ether [14c-c12-ae(16)] were investigated in carp (cyprinus carpio) exposed to concentrations of 0.2-0.6 mg x liter-1, using whole-body autoradiography and the liquid scintillation counting method. 14c radioactivity was rapidly absorbed into the fish bo ... | 1987 | 3595483 |
| morphological and immunohistochemical studies of juxtaglomerular cells in the carp, cyprinus carpio. | | 1987 | 3295351 |
| physicochemical characterization of lens crystallins from the carp and biochemical comparison with other vertebrate and invertebrate crystallins. | lens crystallins were isolated from the homogenate of carp (cyprinus carpio) eye lenses by gel permeation chromatography and characterized by gel electrophoresis, immunodiffusion, amino acid analysis, circular dichroism, and protein sequence analysis. three well-defined fractions corresponding to alpha/beta-, beta-, and gamma-crystallins were obtained in relative weight percentages of 26, 22, and 52%. the native molecular masses of the purified fractions were determined to be 410, 60, and 20 kda ... | 1987 | 3110141 |
| gonadotropin-induced changes in steroid production by ovaries of the common carecyprinus carnio l. around the time of ovulation. | ovarian fragments from both primed (gonadotrophin treated) and unprimed female carp were incubated either with or without carp hypophysial homogenate and steroid hormone production measured. in incubations without hypophysial homogenate, production of all the steroids measured was either very low or nondetectable and there was no significant difference between tissue from primed and unprimed fish. in the presence of carp hypophysial homogenate a very significant increase in production of testost ... | 1987 | 24233252 |
| does the natural diet influence the intestine's ability to regulate glucose absorption? | two fish species (rainbow trout and common carp) that differ in natural diet also exhibit differences in the adaptive flexibility of their intestinal nutrient transport mechanisms in response to changes in dietary nutrient composition. when carp ingested a feed that was 24% glucose by weight, there was an increase in both the intestinal length and rates of nutrient absorption, particularly for glucose, when compared to carp fed an isonitrogenous diet devoid of digestible carbohydrate. as a resul ... | 1987 | 3693623 |
| effects of nitrite exposure on blood respiratory properties, acid-base and electrolyte regulation in the carp (cyprinus carpio). | adult carp were subjected to 1 mm environmental nitrite for 48 h and nitrite uptake and changes in blood respiratory properties, extracellular electrolyte composition and acid-base status were examined. a constant influx of nitrite caused an accumulation of no2- in plasma to 5.4 mm in 48 h. the fraction of methaemoglobin rose with plasma [no2-] to 83%, and the arterial oxygen content decreased to extremely low values. arterial po2 increased as a compensation to this o2-shortage, whereas the o2 s ... | 1987 | 3693620 |
| comparative analysis of gastrin-immunoreactive and argyrophil cells in bony fish larvae. | a comparative study was made of enteroendocrine cells in the larvae of bony fishes (teleostei): carp (cyprinus carpio l.), big head (aristichyts nobilis richardson), silver carp (hypophthalmichthys molitrix valenciennes), and atlantic salmon (salmo salar l.). argyrophil cells demonstrated by the method after grimelius were found in all examined fish species. they are located in the pyloric appendices, stomach and intestinal mucosa. gastrin-immunoreactive cells demonstrated by the immunocytochemi ... | 1987 | 3666239 |
| the variation in the light responses of carp retinal ganglion cells is independent of response amplitude. | the variation of the response rate of carp retinal ganglion cells to photopic light stimulation was studied. it was found that the standard deviation was independent of the mean of the response rate, even when responses showed compression. this finding is in agreement with a late origin of retinal noise. implications of the existence of intrinsic constant amplitude retinal noise and of the presence of a mean maintained activity are discussed. | 1987 | 3660609 |
| glyceraldehyde-3-phosphate dehydrogenase. investigation on the regions responsible for self-assembly of subunits. | 1. in glyceraldehyde-3-phosphate dehydrogenase (gapdh) (ec 1.2.1.12) the four s-loop form the core of the tetramer. 2. amino acid sequence of the s-loop of the regions of gapdh from carp muscle was established through the analysis of tryptic digests of the enzyme treated alternatively with bromocyanate and o-iodosobenzoic acid. 3. enzyme had been oxidized with performic acid. after treatment with trypsin the peptide mixture was fractionated into fragments. 4. cnbr cleavage of this enzyme was per ... | 1987 | 3621906 |
| photoreceptor inputs converging onto c-type horizontal cells of the retina of crucian carp. | responses of r/g-type horizontal cells recorded intracellularly in eye cup preparations with normal circulation of crucian carp under dark-adapted conditions were studied and photoreceptor inputs converging onto them were identified. spectral sensitivities of the hyperpolarizing component of responses, determined at different phases, suggested that it was produced by input from green-sensitive cones. this input and input from long wavelength sensitive cones, causing depolarization of cells, were ... | 1987 | 3602980 |
| a chemokinetic factor in the carp cyprinus carpio. | the results describe experiments which demonstrate that the teleost cyprinus carpio is capable of elaborating a substance which has analogous in vitro effects to that of mammalian chemokinetic lymphokines. in vitro stimulation of leucocytes from carp pronephros, both with antigens and mitogens, was used to provide culture supernatants which were applied to an in vitro chemokinetic assay. the chemokinetic factor-like activity could be detected in supernatants after one day of culture and at a dil ... | 1987 | 3595938 |
| blood type compatibility of lower vertebrates: phylogenetic diversity in blood transfusion between fish species. | bidirectional transfusion was investigated using phylogenetically different fish species, including twelve from ten genera. three different modalities were used: long-lasting persistence when rainbow trout received allogenic erythrocytes, slow rejection when rainbow trout received heterogenic erythrocytes (salmon) and acute rejection after receiving xenogenic erythrocytes (goldfish, carp and tilapia). changes were measured in serum using transfused erythrocytes and hemolytic assays. the response ... | 1987 | 3595936 |
| response properties of c-type horizontal cells in the retina of the bowfin. | intracellular recordings were obtained from biphasic- and triphasic-type horizontal cells (c cells) in the retina of the bowfin. for steady-state responses, both cell types displayed a linear stimulus-response function for responses up to at least 20% of maximum. in the linear range, responses to red/green mixtures were well predicted from the assumption that opposed inputs combine by simple summation. action spectra were measured in the linear range for 30 biphasic and 12 triphasic cells. bipha ... | 1987 | 3576978 |
| [hereditary effects of artificial selection of sperm for the endurance trait in the carp cyprinus carpio and the frog rana temporaria]. | studies have been made of the effect of artificial selection of parental sperm by maximum motility time (maximum tolerance) on the body length in carp larva and heat resistance level of muscle tissue in tadpoles. sperm selection increases mean values of these parameters due to the increase in the progeny of the relative number of long-sized individuals and individuals with higher heat resistance of muscle fibers. | 2009 | 3494361 |
| the effect of an organophosphorus pesticide on the enzymes of carp (cyprinus carpio l.). | 1. the effect of 1.5, 2.0 and 5.0 ppm methidation was studied on the asat, alat, ldh and ache enzymes, as well as the blood sugar and adrenaline levels in carp. 2. according to our studies methidation implies a potential hazard on the normal biochemical processes of fishes: causing tissue necrosis indicated by the increase asat, alat and ldh activities, inducing continual stress effect reflected by the increased blood sugar and adrenaline levels, inhibiting ache activity in the various organs, t ... | 1987 | 3448863 |
| method for the oso4-free preservation of brain tissue suitable for immunocytochemistry in tem. | following conventional oso4-fixation and embedding of brain tissue in epoxide resins for ultrastructural investigations, on the one hand, the wellknown good depiction of structures is obtained, on the other hand, however, according to these procedures a considerable loss up to 80% of glycolipid-bound and up to 50% of glycoprotein-bound neuraminic acid of important native compounds has to be put up with. the fixation of brain tissue by 1% glutaraldehyde and 1% paraformaldehyde in 0.1 mol/l na-k-p ... | 1987 | 3122505 |
| pharmacological properties of the atropine-resistant contraction of the carp (cyprinus carpio) intestinal bulb induced by transmural stimulation. | 1. the pharmacological properties of the atropine-resistant contraction of the carp intestinal bulb induced by transmural stimulation were investigated. 2. in the presence of atropine (1 microm), transmural stimulation caused frequency-dependent (2-50 hz) contraction which was abolished by tetrodotoxin (780 nm). 3. the atropine-resistant contraction was not decreased by tubocurarine (5 microm), hexamethonium (100 microm), carteolol (5 microm) and phentolamine (5.4 microm). 4. in vitro pretreatme ... | 1987 | 2893677 |
| reversal potentials of rod horizontal cell responses in the carp retina. | | 1987 | 2891094 |
| paraquat as an agent affecting antioxidant enzymes of common carp erythrocytes. | the effects of paraquat on the superoxide dismutase, catalase, glutathionine peroxidase activities and lipid peroxidation at different times of paraquat exposure of cyprinus carpio morph l. erythrocytes were studied. typical characteristics were observed in the changes of the enzyme activities of the erythrocytes after exposure to paraquat. the haemoglobin concentration of common carp haemolysates was decreased by exposure to paraquat. | 1987 | 2885134 |
| the effect of various ambient ammonia concentrations on the nitrogen metabolism of carp fry (cyprinus carpio l.). | authors studied how 125, 375 and 625 micrograms/l amounts of nh4cl added to the water influenced the ammonia excretion of carp fry with an average weight of 2.4 g, compared to the control. during the course of the experiments the nh4n concentration, the ph and the temperature were measured for three days, twice daily. on the basis of our results the threshold concentration exerting harmful effects on the ammonia household of carp fry (disturbing the normal rate of metabolism in the fishes and de ... | 1987 | 2881685 |
| red cell function of carp (cyprinus carpio) in acute hypoxia. | the red cell function of carp, subjected to acute hypoxia, was studied. during hypoxic exposure red cell water content, sodium and chloride concentration and ph increased, whereas plasma sodium and chloride concentrations decreased. treatment of the animals with a beta-adrenergic antagonist, propranolol, before the onset of hypoxia, largely inhibited the increase in red cell water content, diminished the changes in red cell ph and prevented the changes in red cell and plasma sodium concentration ... | 1987 | 2822469 |
| dense osmiophilic material in the surface of the olfactory bulb in the teleost cyprinus carpio l. | a dense osmiophilic structure was found associated to the basal lamina of the outer limiting glial membrane of the carp olfactory bulb. in certain sections this material appears as "beads" composed of small strand-like structures, and in others it seems to form a palisade-like structure. the possible origin and function of this structure is discussed. | 1987 | 2442244 |
| modulatory effects of ambient temperature and antigen dose on the induction of specific tolerance to different protein antigens in carp (cyprinus carpio). | | 1987 | 2438707 |
| trachelobdella sinensis blanchard, 1896 found from cyprinus carpio nudus in korea. | trachelobdella sinensis was found in cyprinus carpio nudus. the morphological chararacteristics were described. it is the first record of trachelobdella sinensis in korea(summarized from text). | 1986 | 12886101 |
| xanes spectroscopy of carp hemoglobin-iron in correlation with the affinity changes of the protein for ligand. | the strong variation of ligand-binding properties with ph for carp hemoglobin is not reflected in the electronic distribution of the heme-iron. thus, we can suppose that hemoglobin affinity is directly controlled by the protein and by some particular changes of the iron atom. | 1986 | 3780971 |
| persistence of methyl parathion in a carp rearing pond. | | 1986 | 3779154 |
| acid-base regulation and ion transfers in the carp (cyprinus carpio): ph compensation during graded long- and short-term environmental hypercapnia, and the effect of bicarbonate infusion. | to study both temporal and quantitative effects of hypercapnia on the extent of ph compensation in the arterial blood, specimens of carp (cyprinus carpio) were exposed to a pco2 of about 7.5 mmhg (1 mmhg = 133.3 pa) (1% co2) in the environmental water for several weeks, and a second group of animals was subjected to an environmental pco2 of about 37 mmhg (5% co2) for up to 96 h. a third series of experiments was designed to test the possibility that infusion of bicarbonate would increase the ext ... | 1986 | 3027233 |
| utilization of ascorbate-2-sulfate in fish. | although most vertebrate animals synthesize l-ascorbic acid (c1), some animal species lack the ability to produce l-gulonolactone oxidase and are thus dependent upon a dietary source of vitamin c. fish are unique among this latter group in that they store a chemically stable form of vitamin c and appear to metabolize this compound differently from other vitamin c-requiring organisms. ascorbate-2-sulfate (c2) contributes to total body stores of ascorbate, but the commonly used assays for ascorbat ... | 1986 | 24233177 |
| effects of pimozide and lhrh-aa on carp (cyprinus carpio l.) oocyte maturation and ovulationin vivo. | effects of pimozide (pim) and [(d-ala(6), pro(9)-net) lhrh] (lrh-aa) on common carp oocytes maturation and ovulationin vivo under laboratory and commercial fisheries farm conditions were investigated.although injections of pim and lrh-aa at the doses of 10 mg and 50 µg/kg body weight respectively, did not increase mgth levels (66.7-155.8 mg/ml) as much as injections of carp pituitary extract (chh) (382.1 ng/ml), induced gth levels were high enough to induce ovulation. changes in the ovary caused ... | 1986 | 24233172 |
| fluctuations in gonadotropin and ovarian steroids during the annual cycle and spawning of the common carp. | the main objective of the paper is to describe the annual changes in hormones associated with reproduction in the female carp under the conditions prevailing in the israeli fish culture. fish were sampled monthly throughout 1984; gonadosomatic index (gsi) was calculated and the diameter of ovarian follicles was measured. gonadotropin (gth) content in the pituitary and the circulating gth, estradiol, testosterone and 17α, 20β-dihydroxy-4-pregnen-3-one (17, 20-p) were determined by specific radioi ... | 1986 | 24233169 |
| autoradiographic localization of gonadotrophin receptors in ovaries of the common carp, cyprinus carpio l. | binding sites for carp gonadotrophin have been located in carp ovaries using [125i]labeled gonadotrophin and autoradiography. the radioactive gonadotrophin was displaced from tissue by unlabeled gonadotrophin or carp hypophysial homogenate in a dose-dependent fashion. no binding of gonadotrophin was found in previtellogenic oocytes but binding appeared with the first indications of vitellogenesis. in the smaller vitellogenic oocytes binding was uniformly distributed in the follicular envelope, b ... | 1986 | 3557077 |
| local fe site structure in the tense-to-relaxed transition in carp deoxyhemoglobin: a xanes (x-ray absorption near edge structure) study. | the fe-site structure variation in the transition from the low-affinity tense (t) quaternary structure to the high-affinity relaxed (r) structure in carp deoxyhemoglobin was studied by analysis of multiple scattering resonances in the xanes (x-ray absorption near edge structure) spectra. high signal-to-noise xanes spectra were measured at the frascati "wiggler" synchrotron radiation facility. we find that the forces on the fe active site due to the change of quaternary protein conformation do no ... | 1986 | 3463997 |
| lethal toxicity of cadmium to cyprinus carpio and tilapia aurea. | | 1986 | 3742097 |
| urea tolerance of myofibrillar proteins of two elasmobranchs: squalus acanthias and raja tengu. | some biochemical properties of actomyosin and myosin from elasmobranchs, squalus acanthias and raja tengu are compared with those of a freshwater (cyprinus carpio) and a marine teleost (seriola quinquiradiata). whereas ca2+-atpase of teleost actomyosins are more stable in the absence of urea, the reverse is true for elasmobranchs up to 1.0 m urea. in contrast to that of teleosts, the mg2+-atpase of s. acanthias actomyosin shows an activation in the presence of urea, where as that of r. tengu per ... | 1986 | 2434054 |
| cloning and sequence analysis of cdnas encoding precursors of urotensin ii-alpha and -gamma. | the primary structures of the precursors of urotensin ii (uii)-alpha and -gamma, neuropeptide hormones of the caudal neurosecretory system of the carp, cyprinus carpio, have been determined by analyzing the nucleotide sequences of cloned dnas complementary to the mrnas encoding them. a cdna library, constructed with poly(a)+rna in the preterminal spinal cord, was screened using 32p-labeled synthetic oligonucleotides representing all possible cdna sequences corresponding to the pentapeptide commo ... | 1986 | 2427672 |
| myofibrillar atpase activity in the carp cyprinus carpio: interactions between starvation and environmental temperature. | the myofibrillar atpase activity of the epaxial white muscle was measured in carp cyprinus carpio l. acclimated to 10 degrees c or 28 degrees c. as previously reported, cold acclimation was associated with an increase in the atpase specific activity and a decrease in the thermostability. the water content of the white muscle was significantly higher in cold-acclimated fish than in warm-acclimated fish (p less than 0.002). starvation for 10 weeks resulted in a significant increase in the white mu ... | 1986 | 2943851 |
| factors affecting release of 3h-dopamine from perfused carp retina. | the effects of putative retinal neurotransmitters and several neuropeptides on 3h-dopamine release from isolated perfused carp (cyprinus carpio) retinas were studied. of the transmitter candidates tested, only serotonin (5-ht) and the 5-ht agonist tryptamine released 3h-dopamine. however, the release evoked by these agents was calcium (ca2+) independent and not blockable by the 5-ht antagonist methysergide. we also investigated the antagonism of inhibitory inputs as a potential regulatory mechan ... | 1986 | 2874198 |
| electrical coupling between bipolar cells in carp retina. | intracellular recordings were made simultaneously from pairs of neighboring bipolar cells by advancing two independent microelectrodes into retinas of carp (cyprinus carpio). bipolar cells were identified by their response properties and in several samples were verified by intracellular injection of lucifer yellow. current of either polarity injected into one member of the bipolar cell pair elicited a signconserving, sustained potential change in the other bipolar cell without any significant de ... | 1986 | 16593707 |
| interaction between the soma and the axon terminal of retinal horizontal cells in cyprinus carpio. | intracellular recordings were made from the monophasic horizontal cells of the carp retina which are known to respond with a sustained hyperpolarization to all visible monochromatic light. the receptive field of each subcellular structure, the soma and the axon terminal, was determined using a long narrow slit of light. somata and axon terminals showed receptive fields that encompassed almost the entire retina. this observation suggests that each aggregate of the subcellular parts forms a syncti ... | 1986 | 3795056 |
| fish and antibiotics: pharmacokinetics of sulphadimidine in carp (cyprinus carpio). | pharmacokinetics, metabolism and clearance of sulphadimidine (sdm) were studied after a single intraperitoneal injection of sdm in carp at 20 degrees c. sdm was acetylated and hydroxylated to a small extent. the main metabolite was n4-acetyl derivative amounting only 2% of the total drug dose excreted; hydroxylation was less important (0.41% of the dose). the elimination half-life for sdm in carp was 17.5 h. the clearance values for sdm and its metabolites were equivalent. the importance of phar ... | 1986 | 3765347 |
| the use of artificial gynogenesis in studies on the immune system of carp (cyprinus carpio l.). | gynogenetic carp were obtained by using gamma-irradiated sperm for fertilization followed by a cold shock. the gynogenetic fish and normal siblings of the same parents were analysed for 3 genetic markers: scale pattern, transferrin (tf) and allograft rejection. gynogenetic offspring showed only the maternal scale pattern (scattered). in the majority of the gynogenetic fish a heterozygous tf pattern identical to the mother was observed. animals homozygous for tf were rare in this group. a typical ... | 1986 | 3532513 |
| immunosuppression of carp (cyprinus carpio l.) to ichthyophthiriasis using the corticosteroid triamcinolone acetonide. | the immune response of juvenile mirror carp (cyprinus carpio l.) has been investigated in relation to protective immunity and immunosuppression to the disease ichthyophthiriasis. protective immunity was induced by exposing juvenile carp to approximately 2,000 theronts per fish for 3 hours at a concentration of approximately 80 theronts cm-3 in dechlorinated water ph 7.0-7.2, 20 +/- 2 degrees c in the dark, on three separate occasions of 14 day intervals. following each exposure, re-infection was ... | 1986 | 3094233 |
| movement of fe with respect to the heme plane in the r-t transition of carp hemoglobin. an extended x-ray absorption fine structure study. | carp hb undergoes a well known change in kinetics over the ph range 6-9. x-ray absorption spectroscopy, in conjunction with refined data analysis procedures, shows no difference in iron-ligand distances when carp hbco is switched from r (high affinity) to t (low affinity) states. these distances are 2.015 +/- 0.015 a for the average iron-pyrrole nitrogen distance, 2.14 +/- 0.04 a for the iron-nitrogen (of histidine) distance, and 1.89 +/- 0.05 a for the fe-c (of co) distance. examination of the ... | 1986 | 3700368 |
| circulating forms of alpha msh in the carp and trout blood: an hplc and ria study. | the three forms of msh(desacetyl-, monoacetyl-, and diacetyl) circulate in the carp and trout blood. their proportions there are as follows: in the carp, the desacetylated form is 2.5% of total msh and the monoacetylated form 72% of the acetylated forms of alpha msh. in the trout, similar proportions were found: desacetyl alpha msh was 5% of total alpha msh and monoacetyl-, 70% of the acetylated mshs. | 1986 | 3023175 |
| n-methyl d-aspartate acts as an antagonist of the photoreceptor transmitter in the carp retina. | glutamate, aspartate, and their agonists, kainate, quisqualate, cysteine sulfinate and n-methyl-d-aspartate (nmda), were applied to the isolated carp retina while recording from horizontal cells. all these agents, except nmda, depolarized horizontal cells membrane and reduced responses to light, thus mimicking the effect of the endogenous photoreceptor transmitter. application of nmda, on the other hand, caused a membrane hyperpolarization of horizontal cells in the dark, an effect different fro ... | 1986 | 2871897 |
| 1h nmr spectroscopic studies of calcium-binding proteins. 1. stepwise proteolysis of the c-terminal alpha-helix of a helix-loop-helix metal-binding domain. | a series of modified parvalbumins, differing only in length of alpha-helix f at the c-terminus, was prepared by carboxypeptidase-mediated digestions of the beta-lineage parvalbumin (pi = 4.25) from carp (n; 108 residues). removal of ala-108 to form the n-1 derivative (des-ala108,lys107-parvalbumin) only slightly alters the protein's ability to chelate ca(ii) or lanthanides(iii). analysis of the kinetics of their yb(iii) off-rates by optical stopped-flow techniques, determination of their lu(iii) ... | 1986 | 3707912 |