Publications
| Title | Abstract | Year(sorted descending) Filter | PMID Filter |
|---|
| organochlorine insecticide concentrations in fish of the des moines river, iowa, 1977-78. | organochlorine insecticides were measured in fish of the des moines river, iowa, in 1977 and 1978 to determine whether concentrations exceeded allowable levels and to compare differences among species. significant differences in mean concentrations of dieldrin, sigma ddt, and heptachlor epoxide in whole-body samples of seven species of fish, dorosoma cepedianum, carpiodes carpio, cyprinus carpio, ictalurus punctatus, pomoxis annularis, micropterus salmoides, stizostedion vitreum, could not be ad ... | 1981 | 7312555 |
| indoleamine-accumulating cells and dopaminergic cells are distributed similarly in carp retina. | carp (cyprinus carpio) retinas were processed for simultaneous visualization of dopaminergic (da) and indoleamine-accumulating (id) cells in flat-mounts under fluorescence microscope. a mixture of 5 micrograms noradrenaline (na) and 5 micrograms 5,6-dihydroxytryptamine (5,6-dht) was injected intravitreally into the eyes 2 h before enucleation. the spatial distribution and density were compared between na-loaded da-cells (greenish fluorescence) and 5,6-dht-loaded id-cells (yellowish). the two cla ... | 1981 | 6269027 |
| acid-base and electrolyte status in carp (cyprinus carpio) exposed to low environmental ph. | carp (cyprinus carpio) were exposed to environmental water ph (phw) step changes from 7.4 to 5.1, 5.1 to 4.0 and 4.0 to 3.5 ph, pco2, po2 and lactate in dorsal aortic blood, [na+], [k+] and [cl-] in dorsal aortic plasma, base loss, and ammonia excretion were determined as a function of time after each phw step change. at phw 5.1 the measured blood acid-base and electrolyte parameters remained essentially unchanged; the base loss, however, was increased by a factor of 2. when phw was lowered to 4 ... | 1981 | 6793684 |
| freeze denaturation of carp myosin and its prevention by sodium glutamate. | 1981 | 6458454 | |
| taste responses in the superior secondary gustatory nucleus of the carp, cyprinus carpio l. | single unit discharges in the superior secondary gustatory nucleus of the carp, cyprinus carpio l., were studied electrophysiologically in response to chemical stimulation of the external chemoreceptors of the facial skin surface. of 36 gustatory neurons recorded, 80.6% were facilitated by taste stimuli and 19.4% were inhibited. the gustatory neurons were classified according to their responsiveness to the 4 basic taste substances and, except the inhibitory type, did not differ remarkably from t ... | 1981 | 7260620 |
| somatostatin-like immunoreactivity in the facial, glossopharyngeal and vagal lobes of the carp. | a large number of somatostatin (srif)-containing structures was demonstrated in the vagal and glossopharyngeal lobes of the carp by means of the indirect immunofluorescent method. the present study further showed that the facial lobe is devoid of these structures. these facts indicate that srif may have an important role in relaying viscerosensory information from the vagal and glossopharyngeal nerve but not from the facial nerve. | 1981 | 6116213 |
| studies on mechanism of action of luteinizing releasing hormone (lh-rh) in ovulation of fish--intracellular distribution of lh-rh-a in pituitary gonadotrophs as revealed by electron-microscopic autoradiography. | the results of competitive bending experiment and the electron-microscopic autoradiographic studies show that the peptide hormone, lh-rh-a (a nonapeptide), could be internalized into the gonadotrophs of the pituitary gland of the mud-carp (cirrhrinus molitorella). it is demonstrated that the labeled peptide, 125i-lh-rh-a, is internalized not only into the cytoplasm, but also into the nucleus, apparently via the nuclear pores. it is, therefore, suggested that the peptide hormone might act directl ... | 1981 | 7020078 |
| mercury toxicity: biochemical and physiological alterations in nine freshwater teleosts. | nine fish species subjected to various concentrations (5, 10, 15 and 20 ppm) of mercuric nitrate for 4.5 h. the relationship between the concentrations of mercuric nitrate and the fall in renal glycogen was inverse. there was an elevation in liver and muscle glycogen at 5 ppm mercury. brain glycogen increased to less than 10 ppm and then decreased. glucose and lactate levels increased with increasing concentration of mercury, and muscle, liver, kidney and brain glycogen decreased. the effects we ... | 1981 | 7245255 |
| distillery waste toxicity: metabolic dysfunctioning in nine freshwater teleosts. | an inverse relationship was recorded between the concentrations of distillery waste (5, 10, 15, 20 ppm) and liver and muscle glycogen depletion of the fish studied. serum glucose and lactate levels rose with increased industrial effluent concentrations. changes were more marked in major carp species than in catfish or murrels. the effect of effluent addition upon water quality is recorded. | 1981 | 7245254 |
| electroencephalographic analysis of activities in the optic tectum of unrestrained carp. | electroencephalographic activity of the optic tectum in unrestrained resting carp was classified into three dominant frequency ranges of 4-7, 8-13 and 14-25 hz, peaking at 6, 10, and 17 and 22 hz, respectively, under power spectral analysis. all these activities were suppressed in the dark. the suppression was most prominent in the 8-13 hz waves, but less so in the 4-7 hz. however, while the fish was swimming actively, the 4-7 hz spectrum increased in power and no actual increase could be observ ... | 1981 | 7225222 |
| lack of uptake or degradation of adenosine in the termination of its action in the beating carp atrium. | 1981 | 7247970 | |
| carp hemoglobin. functional analysis and thermodynamics of precise oxygen equilibria according to the simple sequential model of koshland, némethy and filmer. | 1981 | 7277494 | |
| [parasites of fish in the chiascio river]. | an investigation was carried out to identify the fish parasites in the chiascio river (umbria, italy). certain physical-chemical factors and the biochemical oxygen demand of the river water were, also, studied in samples taken seasonally. the parasites found, together with the fish species they invested and the organs and apparatuses involved, are listed. the species of parasites observed are, in various degrees, diffused in the palaearctic region. some are considered to be of allochthonous orig ... | 1981 | 7259887 |
| carp scrapped. | 1981 | 17755144 | |
| proton nuclear magnetic resonance determination of the sequential ytterbium replacement of calcium in carp parvalbumin. | the substitution of the paramagnetic lanthanide ion ytterbium for the calcium ions bound to the cd and ef sites of carp parvalbumin results in a series of 1h nmr resonances which are shifted far outside the envelope of the 1h nmr spectrum of the diamagnetic form of the protein. titration of ca2+-saturated parvalbumin with ytterbium (yb3+) demonstrate that yb3+ sequentially replaces the two bound calcium ions of the protein. analysis of the 1h nmr data yields the relative affinities of the two si ... | 1981 | 7225322 |
| reduction of polychlorinated biphenyl (pcb) concentrations in carp (cyprinus carpio) fillets through skin removal. | 1981 | 6793112 | |
| temperature adaptation of biological membranes. the effects of acclimation temperature on the unsaturation of the main neutral and charged phospholipids in mitochondrial membranes of the carp (cyprinus carpio l.). | the phospholipid composition, fatty acid pattern and cholesterol content are studied in mitochondria of red lateral muscle of carp acclimated to high and low environmental temperatures. the results of the experiments are: mitochondria from cold-acclimated carp contain higher proportions of ethanolamine phosphatides than mitochondria from warm-acclimated fish, the opposite is true for the choline phosphatides. thus, at constant ph, the membrane phospholipids are slightly more negatively charged a ... | 1981 | 7213701 |
| temperature adaptation of biological membranes. compensation of the molar activity of cytochrome c oxidase in the mitochondrial energy-transducing membrane during thermal acclimation of the carp (cyprinus carpio l.). | the acclimation temperature of carp does not affect the amount of cytochrome c oxidase per mg mitochondrial protein as revealed from the reduced-minus-oxidized difference spectra of red muscle mitochondria from cold- and warm-acclimated carp. there are no differences between cold- and warm-acclimated fish in the substrate binding properties of the enzyme as judged from the km values for cytochrome c at 30 degrees c (3.34 +/- 0.ee microm, acclimation temperature 10 degrees c and 3.55 +/- 0.31 mic ... | 1981 | 6260175 |
| the uptake of zinc, lead, copper and manganese by carp fed with activated sludge. | the incorporation of 10 or 40% of activated sludge improved the growth rates of common carp, cyprinus carpio, by comparison with those receiving a commercial fish feed (tubifex worms) alone. the incorporation of 70% or 85% sludge, however, yielded very poor growth rates. the visceral organs of fish receiving 70 or 85% sludge contained 2 x zinc (zn), 2.5 x copper (cu) and 1.4 x manganese (mn) of the control group. | 1981 | 7222114 |
| dopaminergic mechanisms in the teleost retina. ii. factors affecting the accumulation of cyclic amp in pieces of intact carp retina. | the ability of dopamine, dopamine agonists, other proposed retinal neurotransmitters, depolarizing agents and light to stimulate adenylate cyclase activity in pieces of intact carp retina has been examined. the evidence indicates that a dopamine-sensitive adenylate cyclase is the only neurotransmitter activated adenylate cyclase in the carp retina. that is, only dopamine, or agents that activate dopamine receptors, appear to stimulate cyclic amp synthesis in the retina. depolarizing agents such ... | 1981 | 6162007 |
| dopaminergic mechanisms in the teleost retina. i. dopamine-sensitive adenylate cyclase in homogenates of carp retina; effects of agonists, antagonists, and ergots. | a specific dopamine-sensitive adenylate cyclase has been identified in homogenates of the teleost (carp) retina. maximal stimulation by 100 microm-dopamine resulted in a 5--10-fold increase in adenylate cyclase activity with half-maximal stimulation occurring at a concentration of 1 microm. l-noradrenaline and l-adrenaline were some 10 times less potent than dopamine whilst the alpha- and beta-adrenoreceptor agonists, l-phenylephrine and dl-isoprenaline were inactive. apomorphine elicited a part ... | 1981 | 6109764 |
| carp--a nutritional food: preliminary studies on the use of carp in the american diet. | 1981 | 11632318 | |
| effects of dietary zinc levels on zinc concentrations in tissues of common carp. | common carp always has higher zinc concentration in viscera than other carps. to determine the relationship between the dietary zinc level and zinc concentration in common carp, the fish were fed diets containing 17, 294, 1,007 and 1,974 ppm zinc for 8 weeks, and the zinc concentration in each tissue was measured. it was found that the group of fish fed 17 ppm zinc had the highest growth rate. when the dietary concentration of zinc was lower than 294 ppm, the zinc concentrations in the tissues w ... | 1981 | 7452366 |
| [digestive utilization of purified cellulose in the rainbow trout (salmo gairdneri) and the common carp (cyprinus carpio)]. | a semi-purified diet containing 22 p. 100 of a wood cellulose extract without lignin but still containing 22 p. 100 of hemicelluloses was distributed for one month to rainbow trout and common carp reared at 17 and 20 degrees c, respectively. the digestibility of the main dietary constituents was determined by an indirect method using chrome oxide as an inert tracer. the feces were recovered by a continuous automatic collector which rapidly removed them from the water, minimizing alteration by le ... | 1981 | 7349525 |
| [parasitic fauna in the carp (cyprinus carpio) fry bred in ponds fed with rainfall water]. | 1981 | 7345749 | |
| [occurrence of blood flagellates belonging to genus trypanosoma gruby, 1841, in the blood of carp--cyprinus carpio l. and that of tench--tinca l]. | 1981 | 7345748 | |
| photopigments and carp ganglion cells action spectra. | 1981 | 7336592 | |
| physiological and morphological studies of signal pathways in the carp retina. | 1981 | 7336579 | |
| postnatal development of astrocytic glia in the cerebellum of cyprinus carpio. | 1981 | 7301845 | |
| taste response in the facial nerve of the carp, cyprinus carpio l. | the stimulating effect of taste substances on the external chemoreceptors of the carp, cyprinus carpio l., was studied by recording the electrical activity from the facial taste fibers innervating the facial skin surface. the integrated responses from each whole nerve bundle of the trigemino-facial complex nerve revealed that gustatory receptors on the snout of the carp were extremely sensitive to salts, acids and the extract of silk worm pupae. quinine-hcl and sucrose elicited relatively small ... | 1981 | 7300043 |
| cutaneous sphaerosporosis of the common carp fry. | 1981 | 7282496 | |
| [ultrastructural differences in the morphology of the optic tectum of the carp (cyprinus carpio) and rainbow trout (salmo gairdneri) with special reference to the synapses]. | the optic tectum of two years old rainbow trout (salmo gairdneri) and carp (cyprinus carpio) had been compared morphologically, especially concerning the ultrastructural appearance of synapses. differences between these two species were most pronounced in the stratum fibrosum marginale (sm). in addition to differences in the relative thickness of this lamina as compared with the dimension of the whole tectum (carp: 12%; trout: 23%) significant variations concerning the ultrastructural differenti ... | 1981 | 7276542 |
| developmental stages and localization of peroxidatic activity in the leucocytes of three teleost species (cyprinus carpio l.; tinca tinca l.; salmo gairdneri richardson). | the ultrastructural localization of peroxidase (po) in the leucocytes of three teleosts (cyprinus carpio l., tinca tinca l., salmo gairdneri r.) has been investigated using the 3,3'-diaminobenzidine method. in the heterophilic granulocytes the granules show a species specific structure and are po-positive at ph 7.6. they can be traced back to small granules arising near the golgi apparatus (ga) in the promyelocyte. they coalesce to form larger granules and gradually change into the mature type. ... | 1981 | 7273125 |
| the ramification pattern of amacrine cells within the inner plexiform layer of the carp retina. | the morphology of amacrine cells in the retina of the carp is described using the golgi technique. the ramification pattern of these cells was analyzed in flat-mounts of retinas, based on these observations classification into five groups was made. cells possessing one principal process leaving the soma were subdivided into starburst a-neurons and radiate neurons. cells having two or more principal processes were subdivided into starburst b-neutrons and spindle-shaped soma neurons. small, diffus ... | 1981 | 7028273 |
| regulation of insulin biosynthesis in carp islets (cyprinus carpio). | the biosynthesis of proinsulin was measured by the incorporation of radiolabelled leucine and phenylalanine into carp islet protein. even in the absence of glucose or amino acids in the medium the share of proinsulin in the total protein biosynthesis amounted to 40% of the total incorporated [3h]-leucine during 2 h of incubation. glucose increased the rate of total protein biosynthesis in carp islets by approximately 20%, but no preferential increase of proinsulin synthesis occurred in the prese ... | 1981 | 7020309 |
| [dendritic potentials in granular cells of carp olfactory bulbs]. | fast prepotentials in the granular interneurons of carp olfactory bulb were recorded by means of intracellular microelectrodes. data are presented indicating that fast prepotentials are generated in the electrogenic membrane of granular cell dendrites. it is supposed that dendritic spikes play an important role in the inhibitory synaptic influences of granular cells upon secondary olfactory neurons. | 1981 | 6261168 |
| induction of cytochromes p450 and mixed-function oxidase activity by polychlorinated biphenyls and beta-naphthoflavone in carp (cyprinus carpio). | 1981 | 6116566 | |
| evidence for somatostatin, gastrin and pancreatic polypeptide-like substances in the mucosa cells of the gut in fishes with and without stomach. | gastrin, pancreatic polypeptide and somatostatin immunoreactive cells in the gut of two fish with stomachs (perch and catfish) and a stomachless fish (carp) were studied by immunocytochemistry. in the gastric mucosa of perch and catfish, cells showing gastrin and somatostatin-like immunoreactivity are found, scattered among the surface mucous cells and mucous neck cells. no pancreatic polypeptide (p.p.) immunoreactive cells are detected in the gastric mucosa. cells showing gastrin and p.p.-like ... | 1981 | 6112066 |
| the measurement of the electric activity of the olfactory bulb in free swimming carp (cyprinus carpio l.) by underwater telemetry systems. | 1980 | 7461644 | |
| spatial density of catecholaminergic cells in the carp retina. | 1980 | 7215465 | |
| the effect of methallibure (i.c.i., 33828) on the ovary of the carp, cyprinus carpio. | a study has been made on the effect of methallibure (i.c.i., 33828) on ;the ovary of carp. c. carpio. methallibure treatment may exert marked inhibitory influence on vitellogenesis in the fish and cause atresia of vitellogenic follicles, the oogonial proliferation is stepped up. the site and mode of action of methallibure is discussed. | 1980 | 6782840 |
| visual responses of morphologically identified tectal neurons in the crucian carp. | tectal neurons of the crucian carp were functionally and morphologically identified by recording their electrical activity and simultaneously injecting dye (procion yellow). among intrinsic tectal neurons, visual neurons successfully stained with dye were pyramidal, pyriform and uncategorized neurons. the stained intrinsic tectal neurons were classified into 4 types, according to their visual response properties, i.e. sustained, dimming, transient and other response types. in 23 stained neurons ... | 1980 | 7417847 |
| further studies on catecholamine-containing specific endothelial granules in carp cerebral veins. a fluorescence histochemical and electron microscopy study. | the effects of noradrenaline (na), l-3, 4-dihydroxyphenylalanine (l-dopa), 5-hydroxydopamine (5-ohda), 6-hydroxydopamine (6-ohda), and reserpine (res) on the uptake, accumulation, and release of amines in catecholamine-containing specific endothelial granules (seg) of carp cerebral veins and their mode of formation were examined by fluorescence histochemistry and electron microscopy. the intramuscular injection of na (4 mg/kg) or l-dopa (200 mg/kg) resulted in an increase in both the fluorescenc ... | 1980 | 7457935 |
| stereospecific inhibition of dopamine-sensitive adenylate cyclase in carp retina by the enantiomers of (+/-)-1-cyclopropylmethyl-4-(3-trifluoro-methylthio-5h-dibenzo [a,d] cyclohepten-5-ylidene) piperidine (ctc). | 1980 | 6110727 | |
| carp hemoglobin. ii. the alkaline bohr effect. | the bohr effect of carp hemoglobin has been determined by differential titration, by direct acid-base titration, and by calculation from precise oxygen equilibrium data over a wide ph variation. the results for the hemolysate and the two major components are essentially identical. at ph 6.9 in the vicinity of maximum cooperativity and maximum bohr effect, the protein releases 3.7 protons in the absence of added ions. this bohr curve above ph 7 is not changed by the presence of 0.05 m 2,2-bis(hyd ... | 1980 | 7430104 |
| effects of gaba and glycine on the distal cells of the cyprinid retina. | two putative retinal neurotransmitters, gamma-aminobutyric acid (gaba) and glycine, were applied to the isolated carp and goldfish retinas while intracellular recordings from horizontal cells and cones were made. at relatively low concentrations (0.1-1 mm), gaba consistently hyperpolarized dark-adapted h1 or l-type cone horizontal cells and cone photoreceptors, reduced light evoked responses and suppressed the on-transients. the effects of gaba on h1 horizontal cells were abolished when co2+ was ... | 1980 | 7417791 |
| artificial spawning effected in the fresh water teleost, cyprinus carpio by clomiphene citrate. | triweekly i.m. injections of clomiphene citrate (group 1, 25 micrograms/0.5 ml and group ii, 50 micrograms/1.0 ml) were administered for a period of 3 months during the preparatory period to female fresh water teleosts exhibiting ovarian recrudescence, while a control group received 0.5 ml of physiological saline throughout the period of experimentation i.e., from february through april. 50 micrograms clomiphene citrate treatment brought about a steady increase in ovarian size, and oocytes began ... | 1980 | 7418815 |
| dual effect of glutamate and aspartate on the on-center bipolar cell in the carp retina. | in on-center bipolar cells of the carp retina, glutamate and aspartate applied extracellularly by pressure injection produced hyperpolarizing potential changes. these responses were not blocked by co2+. examination of reversal potentials revealed two different conductance changes. one of them appears to be an increase in k+ and/or cl- conductance and the other a decrease in na+ conductance. the results are discussed with relation to the difference in ionic mechanisms of cone and rod inputs. | 1980 | 7407627 |
| strategies for the uses of lanthanide nmr shift probes in the determination of protein structure in solutio. application to the ef calcium binding site of carp parvalbumin. | the homologous sequences observed for many calcium binding proteins such as parvalbumin, troponin c, the myosin light chains, and calmodulin has lead to the hypothesis that these proteins have homologous structures at the level of their calcium binding sites. this paper discusses the development of a nuclear magnetic resonance (nmr) technique which will enable us to test this structural hypothesis in solution. the technique involves the substitution of a paramagnetic lanthanide ion for the calci ... | 1980 | 7248448 |
| a thermodynamic analysis of the binding of calcium and magnesium ions to parvalbumin. | microcalorimetry and equilibrium dialysis were used to determine the thermodynamic functions delta h0, delta g0 and delta s0 guiding the interaction of ca2+ and mg2+ with purified carp muscle isoparvalbumin of pi 4.25. the equilibrium dialysis studies indicate equal affinities of the two metal sites of parvalbumin for either ca2+ or mg2+ with equilibrium constants of kca = 2.7 x 10(9) m-1, and kmg = 9.5 x 10(4) m-1. binding of the two metal ions is fully competitive with no indication for cooper ... | 1980 | 6777163 |
| effect of temperature on functional properties of carp hemoglobin. | 1980 | 7431410 | |
| circular dichroism and spin-label studies of carp hemoglobin. | 1980 | 6253650 | |
| predicting long-term toxicity by subacute screening of pesticides with larvae and early juveniles of four species of freshwater major carp. | 1980 | 7439093 | |
| effect of methylmercury on protein synthesis in liver of the european carp cyprinus carpio. | 1980 | 7203547 | |
| comparison of chemoreceptions of terminal buds and pit organs of the carp, cyprinus carpio l. | neural responses to several chemicals of the pit organs and terminal buds on the facial skin of the carp were compared electrophysiologically. nerve inpulses from the pit organs were larger than those from the terminal buds. the pit organs were more sensitive to salts and especially acids than the terminal buds. the former did not respond to sucrose, silk worm pupa extract, betaine and amino acids except acidic ones. the latter, however, responded well to them. | 1980 | 7388614 |
| nuclear magnetic resonance determination of metal-protn distances in the ef site of carp parvalbumin using the susceptibility contribution to the line broadening of lanthanide-shifted resonances. | the substitution of the paramagnetic lanthanide ion ytterbium for the calcium ion in the ef calcium binding site of carp parvalbumin results in a series of 1h nmr resonances which are shifted well outside of the envelope of the 1h nmr spectrum of the diamagnetic form of the protein. the line broadening of these shifted resonances has been measured as a function of 1h nmr frequency between 200 and 400 mhz, and the spin-lattice relaxation rates have been measured at 270 mhz. the analysis of the re ... | 1980 | 7407042 |
| evolutionary origin of the t lymphocyte receptor--i. immunochemical investigation of immunoglobulin-like cell surface protein of carp thymocytes. | 1980 | 6163976 | |
| effect of alkyl chain on the uptake, distribution, and excretion of 35s-labeled alkyl sulfates in carp. | 1980 | 6248315 | |
| uptake metabolism, and elimination of 14c-labeled 1,2,4-trichlorobenzene in rainbow trout and carp. | fingerling rainbow trout (salmo gairdneri) were exposed to 14c-labeled 1,2,4-trichlorobenzene (tcb) for 8 h in a static exposure (0.018 mg/l) or for 35 d in a continuous-flow exposure (0.020 mg/l) followed by a subsequent elimination period. for the 2 d after the 8-h exposure, the half-time (t 1/2) of elimination of 14c from muscle and liver was 0.4 d, while after the 35-d exposure an early rapid elimination of 14c from these tissues (t 1/2 = 0.4 d) was followed by a slower elimination (t 1/2 = ... | 1980 | 7420471 |
| [diseases of carp fingerlings]. | 1980 | 7395100 | |
| double-replica topography of disk membrane structures in the carp (cyprinus carpio). | by an improved freeze-fracture device, a number of double replicas were obtained from the rod disk membranes of the carp retina for investigation of complementary, continuing, and transitional relationships between fracture faces. some separate particles found along the smooth edge bordering on the adjacent interdisk cytoplasm can be occasionally matched with gaps found between particles forming the complementary rough face edge. consequently the particles on both faces can be derived from a sin ... | 1980 | 7400240 |
| [experience in the control of branchionecrosis of carp]. | 1980 | 6446798 | |
| the effect of feeding methyltestosterone on the growth and body composition of common carp (cyprinus carpio l.). | 1980 | 6154626 | |
| variability of the magnetic moment of carbon monoxide hemoglobin from carp. | deionized carp carbon monoxide hemoglobin in distilled water or in bis(2-hydroxyethyl)imino-tris(hydroxymethyl)methane or tris buffer exhibits a slight but significant paramagnetism. this is most clearly demonstrated by the decrease in this paramagnetism that is caused by the addition of inositol hexaphosphate to this protein in the former buffer at ph 6.3-6.4. no such effect is seen when inositol hexaphosphate is added to carp cyanomethemoglobin, demonstrating that the change observed with carb ... | 1980 | 6929497 |
| monoaminergic innervation of the caudal neurosecretory system of the carp, cyprinus carpio. | 1980 | 6445698 | |
| the effects of temperature and ph on the binding of atp to carp (cyprinus carpio) deoxyhemoglobin. | the linkage relationships between the binding of protons, organic phosphate, and oxygen to hemoglobin are well documented phenomena. these interactions provide a model for the investigation of linkage equilibria. since atp is the major organic phosphate in the erythrocytes of many fish, the binding of atp to a representative fish hemoglobin (carp i) was investigated. in these studies, both temperature and ph were varied so that their effects on atp binding could be elucidated. the experimental b ... | 1980 | 7356626 |
| the quaternary structure of carp muscle aklaline protease. | 1980 | 7350918 | |
| dopaminergic mechanisms in the carp retina: effects of dopamine, k(+) and light on cyclic amp synthesis. | the ability of dopamine, other proposed retinal transmitters, depolarizing agents, and light to stimulate adenylate cyclase activity in the carp retina has been examined. in both homogenates and pieces of intact tissue, all of the evidence suggests that a dopamine-sensitive adenylate cyclase is the only neurotransmitter activated adenylate cyclase in the carp retina. experiments involving the use of several dopaminergic agonist and antagonist drugs indicate that this system possesses similar, if ... | 1980 | 20487759 |
| paradoxical effects of cobaltous chloride treatment on 2-methylnaphthalene disposition and hepatic cytochrome p-450 content in carp. | 1980 | 7436547 | |
| [benz(a)pyrene accumulation, distribution and excretion in fish]. | the data are reported on the level of benz(a)pyrene /bp/ in muscular tissue and various organs of carp, drown trout, seatrout and rainbow-trout. it has been found that the average content of bp in fish was, as a rule, less than 1 mg/kg. the amount of bp in various organs was nearly the same as in the muscular tissue. the food of rainbow trout contained a large amount of bp and so did excrements of this fish. the results obtained allowed a conclusion to be made that some amount of bp does not met ... | 1980 | 7434684 |
| [reactions of neurons of the vagal lobe of the carp medulla oblongata to stimulation of chemoreceptors of the skin surface, oral cavity and gills]. | in the experiments on immobilized carps it was found that the units of the vagal lobe of medulla oblongata respond not only to the stimulation of the mouth cavity and gills, but of skin chemoreceptors as well. the units responding selectively to skin surface stimulation are less in number than those responding to stimulation of the two other receptive fields. there are significant differences between the changes in unit activity elicited by natural alimentary stimulus (extract from the food prod ... | 1980 | 7422030 |
| regeneration of the forebrain of the japanese carp, cyprinus carpio: a golgi analysis. | the regeneration of the forebrain of the japanese carp, cyprinus carpio was examined with the rapid golgi method. characteristic of both 40 and 70 day regenerated forebrains was a proliferation of the spine processes of ependymal cells. concomitant with this spinous augmentation was the appearance of swellings in many of the processes. adjacent to the ependyma were cells that appeared to bud-off the ependyma and become migrating neuroblasts. the examination of the neurons in both normal and rege ... | 1980 | 7419904 |
| [biochemical index changes in carp in experimental trimethyltin chloride poisoning]. | 1980 | 7407267 | |
| temperature and reproduction in tench: effect of a rise in the annual temperature regime on gonadotropin level, gametogenesis and spawning. i. the male. | during a 9-month period (corresponding to a sexual cycle), the adult male tench, tinca tinca, was kept in fish farm ponds receiving heated water from a power plant. in 1974, the males were submitted to three different temperature regimes: group i: ambiant temperature; group ii: ambiant temperature +3 degrees c; group iii: ambiant temperature + 6 degrees c. the experiment was repeated in 1975, but only using groups i and iii. the reproductive cycle and thermal treatment were studied from a quanti ... | 1980 | 7349412 |
| dendritic bundles: occurrence and regeneration in the forebrain of the japanese carp, cyprinus carpio. | dendritic bundles were observed in the striatum and cerebellum of the japanese carp. the striatal bundles were found to regenerate following telencephalic removal. this finding in conjunction with incoming axonal budding suggests that formation of the bundles are under the control of dynamic biological factors and not simple mechanical distortions. | 1980 | 7229343 |
| [recent developments in the concept of essential fatty acids in fish]. | in fish, essential acids belong to the n-3 series. in trout, carp and salmon a dietary supply of 0.7 to 1% linolenate allows to prevent any symptoms of deficiency and ensures a normal growth. this is not the case for see fish such as daurade and turbot, where a supply of a similar proportion of n-3 high polyunsaturated fatty acids (hpufa) appears to be necessary. however, recent experiments show that this requirement for hpufa is not specific, since they can be replaced by linolenate in the turb ... | 1980 | 7001983 |
| histochemical evidence for granulosa steroids in follicle maturation in the african catfish, clarias lazera. | the effects of carp pituitary suspension (cps) and 11-desoxycorticosterone-acetate (doca) on 3 beta-hydroxysteroid dehydrogenase (3 beta-hsd) and glucose-6-phosphate dehydrogenase (g6pd) activity in the ovary of clarias lazera are described. strong 3 beta-hsd and g6pd activities are localized in the stroma, of both control and treated fish. a single cps injection stimulates 3 beta-hsd activity in the granulosa of postvitellogenic, maturing and post-ovulatory follicles, but doca has no such effec ... | 1980 | 6932258 |
| [organochlorine insecticide and polychlorinated biphenyl residues in some fish species]. | studies were carried out on 7 kinds of fish--black sea scad, aegian sardine, ocean mackerel, white hake, danube red-fin fish, carp and trout, from fish breeding-ponds, with a purpose of finding residual quantities of chloroganic compounds. the average values found for hexachlorcyclohexane, alpha and gamma, ddt and the metabolites, the dildrine and the polychlorinated biphenyls were considerably lower than those established by other authors about the same or similar kinds of fish: sigma ddr--0.15 ... | 1980 | 6791372 |
| maintenance of respiratory rhythm-generation by vascular perfusion with physiological saline in the isolated head of the carp. | 1) vascular perfusion of the isolated head of the carp was carried out with physiological saline. respiratory movement of the grill covers and respiratory discharges of cranial motor nerves were recorded in the preparation. 2) blood vascular vessels supply the brain were anatomically investigated. concentrations (electrolytes, o2, co2, and glucose) and perfusing pressure of the saline were determined by reference to the useful information already available in fish physiology. 3) the movement of ... | 1980 | 6780714 |
| effects of carbon dioxide on carp. | 1980 | 6774068 | |
| profiles of plasma gonadotropin and 17 beta-estradiol in the common carp, cyprinus carpio l., as related to spawning induced by hypophysation or lh-rh treatment. | plasma gonadotropin (gth) and 17 beta-estradiol (17 beta-e2) levels and oocyte stage have been studied in the common carp, cypinus carpio l., after classical "hypophysation" (two intraperitoneal pituitary injections of 0.3 mg/kg and 2.7 mg/kg at a 12-hr interval) or lh-rh treatment (two intracardiac injections of 3 micrograms/kg at a 3-hr interval). after the first pituitary injection of lh-rh treatment, gth increase was followed by a significant increase of 17 beta-e2 7 hrs after the injection. ... | 1980 | 6760277 |
| drug-induced changes in catecholaminergic cells of the fish retina. | the changes in fluorescence intensity and number of visible catecholaminergic cells (ca-cells), as revealed by means of a histofluorescence technique, were used as indicators of the effects of various pharmacological agents upon ca-cells in the retina of fishes (cyprinus carpio and eugerres plumieri). the study includes in vivo and in vitro experiments. in the in vivo experiments, intravitreal injection, two or three hours before eye enucleation, of 10 microgram l-dopa, dopamine, or noradrenalin ... | 1980 | 6162965 |
| fine structure and radioautography of retinal cone outer segments in goldfish and carp. | cone but not rod outer segments (oss) in the retinas of goldfish and carp are diffusely labeled after intravitreal injection of 3h-fucose. among the different cone types, the oss are heavily labeled in the long double, short single, and some long single cones. the oss of short double and the remaining long single cones are consistently more lightly labeled. a correlation thus exists between heavy labeling of oss maximally sensitive to red and blue light and lighter labeling of oss with maximum s ... | 1980 | 7390721 |
| central gustatory paths in the crucian carp, carassius carassius. | the central fiber connections of the gustatory system (vii, ix, and x nerves) in th crucian carp were examined by the fink-heimer method and its modification. the sensory and recurrence roots of the vii enter th brainstem separately and terminate in teh ipsilateral half of the facial lobe (l-vii). afferent fibers of the ix terminate in the glossopharyngeal lobe (l-ix). most afferent fibers of the x terminate in the sensory layer of the vagal lobe (l-x), in which degenerating terminals occur in s ... | 1980 | 7400389 |
| studies on putative neurotransmitters in the distal retina. | histochemical and cytochemical studies of the retinas of the teleosts carassius carassius and eugerres plumieri revealed that acetylcholinesterase, besides its main localization in the inner retinal layers, can be also found in the outer plexiform and inner nuclear layers, and between the apposed processes of horizontal cells of a given layer. similar studies of catecholamine (ca) containing cells in cyprinus carpio and eugerres plumieri have identified cells with bodies located in the inner ple ... | 1980 | 20487732 |
| ammonia toxicity: metabolic disorder in nine freshwater teleosts. | an inverse relationship was recorded between the concentration of ammonium chloride (5, 10, 15, and 20 ppm) and the fall in ph and dissolved oxygen of water; with ammoniacal nitrogen and carbon dioxide the relationship was reversed. the effect of various concentrations of ammonium chloride (5, 10, 15, and 20 ppm) on tissue glycogen, serum glucose and lactate level was studied in 9 freshwater teleosts from a tropical environment. the fall in tissue (liver, muscle, and brain) glycogen was inversel ... | 1980 | 7444973 |
| thiodon toxicity: non-specific phosphomonoesterases in nine freshwater teleosts. | the effect of various concentrations of thiodon on tissue non-specific phosphomonoesterases was studied in 9 edible freshwater teleosts from a tropical environment. sublethal doses (5 and 10 ppm) of thiodon increased alkaline phosphatase in liver, muscle, kidney and brain, while lethal doses (15 and 20 ppm) decreased it. the reverse was the case with acid phosphatase. the greatest changes were recorded in kidney and liver. the increase in the activity of acid phosphatase after lethal doses might ... | 1980 | 7444972 |
| morpho-histology of the hypothalamo-neurohypophyseal system in relation to gonadal maturation in cirrhinus mrigala (ham.), a freshwater indian carp. | the hypothalamic neurosecretory centres, their pathway and the role of neurosecretory material responsible for gonadal maturation during its annual cycle is being reported here for the first time in an indian freshwater major carp, cirrhinus mrigala (ham.). | 1980 | 7235262 |
| [diploid radiation-induced gynogenesis in carp. ii. segragation according to morphological traits in gynogenetic progenies]. | the character of segregation in diploid gynogenetic progenies of cyprinus carpio with respect to the following three external characters was studied: the type of scale cover, the colour and the design. the genetic formulae of these characters are as follows: the type of scale cover: scaled--(snn); scattered--(ssnn); linear--(s--nn); nude--(ssnn); the existence of design (d--); the absence of design--(dd); the type of colour: light--(li); dark--(ii). the dominant genes n and l exert a recessive l ... | 1980 | 273569 |
| alternate capping mechanisms for transcription of spring viremia of carp virus: evidence for independent mrna initiation. | two alternate mechanisms of mrna capping for spring viremia of carp virus have been observed. under normal reaction conditions, a ppg residue of the capping gtp is transferred to a pa moiety of the 5' termini of mrna transcripts. however, in reaction conditions where gppnhp is used instead of gtp, an alternate capping mechanism occurs whereby a pg residue of the capping gtp is transferred to a ppa moiety of the transcripts. the first mechanism is identical to that described previously for vesicu ... | 1980 | 16789187 |
| [evolutionary origin of the t-lymphocyte receptor. ii. production and partial characterization of antisera to the immunoglobulin-like cell membrane protein from thymocytes of the carp]. | an immunoglobulin-like protein from triton x-100 solubilized cell surface proteins from thymocytes can be isolated by specific precipitation using anti-igm antibodies. immunizing rabbits with those immune complexes we succeeded to elicit anti-thymocyte mig sera reacting with both thymocyte mig and igm. sds-page analysis revealed that anti-igm and anti-thymocyte mig sera recognize the same thymocytic surface protein. the cross-reactivity between thymocyte mig and igm is caused by protein determin ... | 1980 | 6163269 |
| [glycogen content and activities of phosphorylase and glucose-6-phosphatase in the fast and slow muscles of representatives of different classes of vertebrates]. | studies have been made on glycogen content as well as on the activity of phosphorylase and glucose-6-phosphatase in fast and slow muscles from representatives of 6 classes of vertebrates (lampetra fluviatilis, cyprinus carpio, rana temporaria, rana ridibunda, emys orbicularis, hen, rat). glycogen level and glucose-6-phosphatase activity are either higher in slow muscles, or practically identical in both types of muscles (glucose-6-phosphatase is absent from the fast muscles of hens and rats). on ... | 1980 | 6247864 |
| demonstration of specific receptors of the rough endoplasmic membrane for the signal sequence of carp preproinsulin. | 1. evidence is given for the cotranslational processing in a wheat germ cell-free system of carp preproinsulin to proinsulin by dog pancreatic rough endoplasmic membranes stripped of ribosomes by edta. concomitantly with processing there is a translocation of the protein across the membrane as shown by the accessibility to proteases. conversion of preproinsulin to proinsulin occurs post-translationally only in the presence of detergent. 2. stripped rough endoplasmic membranes bind a significant ... | 1980 | 6249584 |
| responses of msh and prolactin cells to 5-hydroxytryptophan (5-htp) in amphibians and teleosts. | injection of 5-hydroxytryptophan (5-htp), a precursor of serotonin, induces dispersion of melanin in the amphibians, pleurodeles waltlii (urodela) and xenopus laevis (anura), in the goldfish, carassius auratus, and in the carp, cyprinus carpio. it is accompanied by a dispersion of erythrophore pigments. in the pituitaries of pleurodeles and goldfish, a stimulation of msh cells, characterized by a significant nuclear hypertrophy, is also observed; in carassius, msh cells may become degranulated. ... | 1980 | 6967354 |
| [development of the adrenergic innervation of the atrioventricular valves of certain vertebrates]. | adrenergic innervation of the atrioventricular valves in the carp cyprinus carpo, frog rana temporaria, tortoise emys orbicularis, hens and albino rats has been investigated by histochemical glyoxylic technique. it was shown that the adrenergic innervation of cardiac valves becomes more intense and more complex during progressive evolution of cardio-vascular activity. adrenergic nerves realize the connection between annullus fibrosus, valve, chordal tendineal and papillary muscles. chromaffin ce ... | 1980 | 6967660 |
| studies on the enzymatic reduction of c-nitroso compounds. i. distribution of c-nitrosoreductase activity in animal tissues and partial purification of the enzyme from porcine liver. | the subcellular distribution of nadh-p-nitrosophenol (p-nsp) reductase activity at ph 6.0 in porcine liver was studied by spectrophotometric assay. about two-thirds of the activity was found in the cytosol fraction and the ph optimum of this fraction was about 5.5. the activity at ph 5.8 of cytosol fractions from various tissues of rats, quails, frogs, carp, and scallops was also studied. all these fractions showed more or less nadh-p-nsp reductase activity but the activity of nadh-aldehyde redu ... | 1980 | 6774979 |
| dna repeat lengths of erythrocyte chromatins differing in content of histones h1 and h5. | among the erythrocytes of chicken, trout, carp, and sucker, the relative proportion of the lysine-rich histone h5 varied from 20 to 0% of the total histones. following digestion of nuclear chromatin with micrococcal nuclease, each of them displayed a longer dna repeat length and greater repeat length heterogeneity than found in liver chromatin. fish erythrocytes possessed similar repeat lengths of 207-209 base pairs which was 10-12 base pairs shorter than in chicken erythrocyte chromatin and app ... | 1980 | 6777761 |
| purification and properties of glycine decarboxylase, a component of the glycine cleavage system, from rat liver mitochondria and immunochemical comparison of this enzyme from various sources. | glycine decarboxylase, tentatively called p-protein as a constituent of the glycine cleavage system, was purified to near homogeneity from rat liver mitochondria. the purified p-protein was a homodimer with a molecular weight of about 210,000, consisting of identical subunits with a molecular weight of 105,000. in the exchange reaction of the carboxyl carbon of glycine wih co2 catalyzed by the purified p-protein in the presence of h-protein, the ph optimum was 6.7, km for glycine was 6.6 mm, and ... | 1980 | 6778858 |
| [svcv infection of carp (author's transl)]. | this word was carried out to confirm several pathogenical points which had been previously outlined during svcv infection trials of carp performed in autumn at + 11 degrees c, when the temperature was naturally decreased. here, 50 g carp which had undergone the wintering, were infected in spring either via the water-route (2 h in 5 x 10(3) pfu/ml water) or intraperitoneally (5 x 10(3) pfu/fish) when the natural elevation of the water temperature had reached + 11 degrees c. then the fish appeared ... | 1980 | 7259029 |
| bothriocephalosis in the common carp in the eastern transvaal. | the first outbreak of bothriocephalosis in common carp in south africa is recorded. this condition was caused by bothriocephalus acheilognathi, a pseudophyllid tapeworm not previously identified in this country. methods to limit its spread are suggested. | 1980 | 7241498 |