Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
|---|
| [slow potentials of the olfactory bulb in the carp]. | the slow negative potentials evoked in carp olfactory bulb (ob) by some odorants and slow positive potentials evoked by nonspecific irritation (water stream, nacl solutions) of olfactory epithelium have been studied. the slow potentials of both types were not inverted in deep layers of ob and were resistant to blockade of synaptic transmission by manganese ions. the negative slow potentials were not also affected by hypoxia and associated with local increase of ob tissue resistance. positive slo ... | 2011 | 3196780 |
| interactions between human and carp (cyprimus carpio) low density lipoproteins (ldl) and ldl receptors. | 1. we have compared the concentration and chemical composition of carp and human plasma lipoproteins and studied their interaction with human fibroblast ldl receptors. 2. the main lipoproteins in carp are of high density (hdl) in contrast to low density lipoproteins (ldl) in human. 3. carp lipoproteins are devoid of apolipoprotein (apo) e, a major ligand for interaction with ldl receptors in mammals. 4. carp very low density lipoproteins (vldl) and ldl but not hdl nor apoa-i cross react with hum ... | 1988 | 3197401 |
| development of sensitivity to maturation-inducing steroids in the oocytes of the daily spawning teleost, the kisu sillago japonica. | the responsiveness of oocytes to 17 alpha,20 beta-dihydroxy-4-pregnen-3-one (17 alpha,20 beta-dioh-p), 17 alpha-hydroxyprogesterone (17 alpha-oh-p), and silver carp gonadotropin (gth) was examined in vitro at seven different times of the day (0100, 0500, 0800, 1000, 1300, 1700, 2100 hr) in a daily spawning teleost, the kisu sillago japonica. 17 alpha,20 beta-dioh-p, 17 alpha-oh-p, and gth were effective in inducing germinal vesicle breakdown (gvbd) and ovulation in kisu oocytes. however, the ooc ... | 1988 | 3197947 |
| daily cycles in plasma melatonin levels under long or short photoperiod in the common carp, cyprinus carpio. | a radioimmunoassay (ria) for plasma melatonin (mlt) was simplified for use with the common carp (cyprinus carpio). plasma was partially purified with sep-pak c18 cartridge before ria. the inhibition curves for the sep-pak c18 fraction from the plasma of carp, goldfish (carassius auratus), yellow tail (seriola quinqueradiata), japanese eel (anguilla japonica), bora (mugil cephalus cephalus), kisu (sillago japonica), ishigarei (kareius bicoloratus), and shimaisaki (rhyncopelates oxyrhynchus) were ... | 1988 | 3197949 |
| in vitro effectiveness of estradiol-17 beta, androgens, corticosteroids, progesterone, and other pregnene derivatives on germinal vesicle breakdown in oocytes of the exotic common carp cyprinus carpio (l.). | 1988 | 3198160 | |
| localisation and identification of melanocyte-stimulating hormones in the fish brain. | the existence of melanocyte-stimulating hormone (msh) in fish brains was investigated by a range of techniques: radioimmunoassay, hplc, bioassay, and immunocytochemistry. immunoreactive alpha msh (ir alpha msh) was detected by radioimmunoassay in all regions of carp and trout brains, with the highest concentration in the basal hypothalamus. in trout, ir alpha msh cell bodies were located by immunocytochemistry only periventricularly, in the medial basal hypothalamus near the third ventricle, whe ... | 1988 | 3203871 |
| dopamine cells and rod bipolar cells contain protein kinase c-like immunoreactivity in some vertebrate retinas. | the localization of cells immunoreactive to a monoclonal antibody against protein kinase c (pkc) and to polyclonal antibodies against tyrosine hydroxylase (th) was investigated in the retina of fish (carp, goldfish, dace and catfish), frog, turtle, chick and some mammalians (guinea pig, rat, cat and rabbit) by means of fluorescence microscopy. pkc-like immunoreactivity was found in dopamine (da) or th-like immunoreactive (ir) cells in all the species examined and also in rod bipolar cells in the ... | 1988 | 3205402 |
| 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 |
| [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 |
| seasonal variations of glucose and triiodothyronine concentrations in serum of carp (cyprinus carpio l). | thyroid hormone and glucose serum concentrations (sc) of carps (cyprinus carpio l) have been monitored at weekly intervals throughout the year. t4 and rt3 concentrations were always below the limit of detection of the assays applied. t3 and glucose mean sc showed seasonal variations. highest t3 sc were reached in summer with a peak value in august and lowest values in winter with a maximum in december. glucose sc have been found to be highest in winter and lowest in summer. statistical analysis ... | 1988 | 3220447 |
| a comparative study of aldehyde dehydrogenase and alcohol dehydrogenase activities in crucian carp and three other vertebrates: apparent adaptations to ethanol production. | in the final step of the pathway producing ethanol in anoxic crucian carp (carassius carassius l.), acetaldehyde is reduced to ethanol by alcohol dehydrogenase. the presence of aldehyde dehydrogenase in the tissues responsible for ethanol production could cause an undesired oxidation of acetaldehyde to acetate coupled with a reduction of nad+ to nadh. moreover, acetaldehyde could competitively inhibit the oxidation of reactive biogenic aldehydes. in the present study, the distribution of aldehyd ... | 1988 | 3220990 |
| trace element residues in bluegills and common carp from the lower san joaquin river, california, and its tributaries. | whole-body samples of bluegills (lepomis macrochirus) and common carp (cyprinus carpio) from the san joaquin river and two tributaries (merced river and salt slough) were analyzed to determine if the concentrations of any of nine elements were elevated as a result of exposure of the fish to agricultural subsurface (tile) drainage water. highest concentrations (micrograms/g dry weight) detected were as follows (first number in each pair applies to bluegills and the second to carp): arsenic (as), ... | 1988 | 3222692 |
| [residues of active substances after consumption of contaminated food: status report on the evaluation of residues with examples of two drugs]. | pharmacokinetic models are presented for the computation of time courses of blood levels of drugs in man following the consumption of contaminated food. mathematically, two linear systems of differential equations are set up for the donor organism (e.g., trout) and for the recipient, (e.g., man), where the first system generates the initial conditions for the second. models of this kind are applied to the transfer of chloramphenicol to man via carp and trout (which had previously been administer ... | 1988 | 3223091 |
| effects of dopamine on spatial properties of horizontal cell responses in the carp retina. | 1988 | 3231368 | |
| purification and some properties of glyceraldehyde-3-phosphate dehydrogenase from carp muscle. | glyceraldehyde-3-phosphate dehydrogenase was purified from carp white muscle. on cm-sephadex chromatography two well separated active peaks were obtained. both of them show a single protein band on gel electrophoresis and have the same molecular and kinetic properties; they differ only by the amount of bound nad, the enzyme in the second peak being coenzyme-free. significant differences were observed between the properties of carp and pig muscle enzymes. glyceraldehyde-3-phosphate dehydrogenase ... | 1988 | 3232465 |
| xenobiotic metabolizing enzyme systems in test fish. iii. comparative studies of liver cytosolic glutathione s-transferases. | the reduced glutathione (gsh)-conjugating capacities of the livers of trout, carp, zebra fish, guppy, and bluegill have been evaluated with several substrates preferentially metabolized by the major gsh-transferase isozymes. carp and zebra fish lack gsh-transferase activity with 1,2-epoxy-3-(p-nitrophenoxy)propane. guppy is characterized by the highest activities with 1-chloro-2,4-dinitrobenzene and the absence of activity toward trans-4-phenyl-3-buten-2-one. enzyme activities with the other sub ... | 1988 | 3234293 |
| [the effect of temperature acclimation on nadp-dependent dehydrogenase activity in the carp liver and various mechanisms of its regulation]. | acclimation of carp both to the temperature fall (from 20 to 5 degrees c) and rise (from 20 to 30 degrees c) induces an increase in activity of cytoplasmic liver nadph-generating enzymes--glucose-6-phosphate dehydrogenase (g6pdg) and malic-enzyme (me) 6-phosphogluconate dehydrogenase (6pgdg) and nadp-isocitrate dehydrogenase (nadp-idg) activities are unchanged. actinomycin d does not prevent cold activation of g6pdg but blocks activation of me. "warm" g6pdg has minimal km value for glucose-6-pho ... | 2015 | 3238795 |
| 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 |
| primary structures of carp gonadotropin subunits deduced from cdna nucleotide sequences. | the alpha and beta subunits of carp gonadotropin (cgth) were isolated by high performance liquid chromatography. they were identified to be the subunits of cgth by bioassay and by partial n-terminal amino acid sequence analysis. to elucidate the complete primary structures of the alpha and beta subunits of cgth, cdna cloning technique was employed. the alpha and beta subunits consist of 95 and 115 amino acid residues, respectively. homology of the alpha subunit of cgth to those of mammalian gth ... | 1988 | 3246480 |
| [a morphometric analysis of erythrocytes and the level of antiviral antibodies in the carp blood at the final stage of the infectious process]. | 2012 | 3248597 | |
| modulation of cone horizontal cell activity in the teleost fish retina. i. effects of prolonged darkness and background illumination on light responsiveness. | the effects of prolonged (greater than 2 hr) darkness and background illumination on the light responsiveness of cone horizontal cells were examined in isolated, superfused white perch retinas. in retinas from fish maintained in complete darkness for more than 2 hr, cone horizontal cells had a resting membrane potential of about -18 mv, and they generated only slow, low-amplitude (3-4 mv) responses even when stimulated with bright flashes. following the presentation of dim background light, the ... | 1988 | 3249224 |
| a comparative trial of garlic, its extract and ammonium-potassium tartrate as anthelmintics in carp. | while fish chemotherapy is not a common practice in méxico, folk medicine is usually well accepted by fish farmers. empirical knowledge suggested that garlic should have anthelmintic properties. various trials were carried out in cyprinus carpio infested with capillaria sp., using minced garlic and its extracts. an empirical concentration of 200 mg/l of minced garlic showed the greatest activity against the above mentioned worms (100%). the hexane extract in equivalent amounts showed a 75% effec ... | 1988 | 3253490 |
| 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 |
| the protein sequence homology of gamma-crystallins among major vertebrate classes and their dna sequence homology to heat-shock protein genes. | a systematic characterization of lens crystallins from five major classes of vertebrates was carried out by exclusion gel filtration, cation-exchange chromatography and n-terminal sequence determination. all crystallin fractions except that of gamma-crystallin were found to be n-terminally blocked. gamma-crystallin is present in major classes of vertebrates except the bird, showing none, or decreased amounts, of this protein in chicken and duck lenses, respectively. n-terminal sequence analysis ... | 1988 | 3255376 |
| comparative studies on the structure of biliary immunoglobulins of some avian species. ii. antigenic properties of the biliary immunoglobulins of chicken, turkey, duck and goose. | studies on the immunological cross-reactivity of the igs+ from the bile of chicken and turkey (order galliformes) as well as duck and goose (order anseriformes) to igs with antigenic known properties carried out by a series of ria. various class-specific anti-ig sera produced in rabbits, guinea-pigs and mice were used. the following results were obtained: (1) a high extent of antigenic relationship between the chicken and turkey biliary igs was demonstrated by a radiobinding system consisting of ... | 1988 | 3260198 |
| adaptational change in cone-mediated electroretinogram in human and carp. | 1988 | 3265993 | |
| [study on ldh isoenzymes of hybrid yue-carp and its parents]. | 1988 | 3273660 | |
| the fetal phenotype of the 18p-syndrome. report of a male fetus at twenty-one weeks. | morphological and cytogenetic findings in a male fetus at 21 weeks gestation after prenatally detected monosomy 18p are reported. the fetus displayed dysmorphic features resembling the 18p-syndrome, such as decreased head circumference, slightly receding forehead, hypertelorism, epicanthus, horizontal palpebral fissures, depressed nasal bridge, long philtrum, carp mouth, irregular crenated maxillar alveolar ridge, retrognathia, lowset dysplastic ears with posterior rotation, edema of neck, hands ... | 1988 | 3281573 |
| 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 |
| morphological and immunohistochemical studies of juxtaglomerular cells in the carp, cyprinus carpio. | 1987 | 3295351 | |
| urotensin i-like immunoreactivity in amacrine cells of the goldfish retina. | urotensin i-like immunoreactivity (uili), in different localization from that of corticotropin releasing factor-like immunoreactivity (crfli), in the goldfish retina has been demonstrated by means of radioimmunoassay, high-performance liquid chromatography (hplc) and immunohistochemistry. radioimmunoassay showed 350 +/- 40 pg/mg prot. of uili in goldfish retina extracts. the immunoreactive material present in the retina was also characterized by reversed phase hplc. some of the uili co-eluted wi ... | 2011 | 3295600 |
| cloning and sequencing of a carp beta s-crystallin cdna. | the mrnas were extracted from common carp (cyprinus carpio) lenses, purified, reverse transcribed, dc tailed and cloned into escherichia coli with pbr322 as vector. the cloning efficiency was around 1 x 10(7) colonies per micrograms of mrna. a clone (pc20) was found by hybrid-arrested to contain the cdna related to carp crystallins. however, comparison of the derived amino-acid sequence with bovine gamma-ii and beta s-crystallins indicates that this carp crystallin sequence resembles closely the ... | 1987 | 3307924 |
| primate specific sialoglycoprotein of sperm head plasma membrane defined by an anti-carbohydrate monoclonal antibody. | a sialoglycoprotein, an integral component of the head plasma membrane of human spermatozoa, is recognized by the a-hs 1a.1 monoclonal antibody. the antigenicity is associated with the sugar moiety since: a) trypsin digestion did not affect the antigenic determinant; b) pretreatment of the cells with beta-glucosidase, alpha-mannosidase and neuraminidase completely abolished antibody binding. endoglycosidase d and glycopeptidase f were inactive. the a-hs 1a.1 did not recognize a variety of blood- ... | 1987 | 3317219 |
| [sphaerospora renicola (myxosporidia), the agent of protozoal swim bladder inflammation in young carp (renicola sphaerosporosis)]. | 1987 | 3328529 | |
| interaction of parvalbumin of pike ii with calcium and terbium ions. | fluorimetric titrations of parvalbumin ii (pi 4.2) of pike (pike ii) with ca2+ and tb3+ show the cd and ef binding sites to be non-equivalent. the intrinsic binding constants of the strong and the weak sites obtained for ca2+ are: ksca = 1.6.10(8) m-1; kwca = 6.6.10(5) m-1. differences of the order of 100% were encountered between the tb3+ binding constants obtained with four different versions of titration. their average values are: kstb = 1.9.10(11) m-1; kwtb = 1.0.10(7) m-1. the distances of ... | 1988 | 3334854 |
| 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 |
| properties of odour-binding glycoproteins from rat olfactory epithelium. | the specific membrane glycoproteins with high affinity for camphor and decanal were isolated from rat olfactory epithelium. antibodies to these glycoproteins inhibited both the electroolfactogram and the binding of odorants. the enzyme immunoassay has shown these glycoproteins to be present in the olfactory epithelium of rat, mouse, guinea-pig and hamster but not in that of frog and carp. the molecular mass of the odour-binding glycoproteins from rat olfactory epithelium solubilized by triton x- ... | 1988 | 3337807 |
| 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 |
| morphology of physiologically identified mitral cells in the carp olfactory bulb: a light microscopic study after intracellular staining with horseradish peroxidase. | physiologically identified mitral cells in the carp olfactory bulb were stained by intracellular injection of horseradish peroxidase in order to study the morphology in detail. the somata were fusiform, elongated, oval, triangular, or irregular. the mean diameters of the somata were 30 microns x 14 microns. two to five thick dendrites arose from the somata and frequently gave off branches to form glomerular tufts. the dendrites extended less than 400 microns; the dendritic field of single mitral ... | 1988 | 3343400 |
| adaptation of intestinal morphology in the temperature-acclimated carp, cyprinus carpio l. | the effects of temperature and photoperiod acclimation upon the morphology of carp intestinal mucosa have been studied using morphometric techniques. carp intestine showed an absence of anatomical regionalisation. there was a gradual reduction in the dimensions of villi along the tract. the decrease in the dimensions of the villi was greatest in the anterior half. temperature acclimation had no effect on intestinal-somatic indices. acclimation to 10 degrees c or 30 degrees c resulted in large di ... | 1988 | 3345555 |
| cutaneous tumor of northern pike, esox lucius l. ii. expression of surface and cytoplasmic immunoglobulins and alpha-naphthyl acetate esterase by mononuclear cells from lymphoid tissues and tumor. | rabbit anti-pike igm antibodies showed that up to 95% of mononuclear (mn) cells isolated on ficoll-isopaque gradients from peripheral blood, spleen, and head kidney of northern pikes carrying cutaneous tumors were surface (sig) and cytoplasmic (cig) immunoglobulin positive by indirect immunofluorescence. on the contrary, rabbit anti-winter flounder igm antibodies gave totally negative results. monoclonal anti-carp igm antibodies stained approximately 40-56% of peripheral blood, splenic, and head ... | 1988 | 3350193 |
| temperature effects on ph of mitochondria isolated from carp red muscle. | mitochondria isolated from red muscle of carp (cyprinus carpio) were used to investigate the effects of temperature and extramitochondrial ph (phe) on the mitochondrial ph gradient and respiratory properties. mitochondria from animals acclimated to 10 degrees c were isolated and incubated in kcl-based media with 0.2 mm lauroylcarnitine (c-12) as substrate. maximal respiratory control ratios (rcr = state 3/state 4) were 16-18 between ph 6.7 and 7.4 at 10 degrees c; rcr values were 9-12 between ph ... | 1988 | 3354709 |
| species differences in 2,3,7,8-tetrachlorodibenzo-p-dioxin toxicity and biotransformation in fish. | rainbow trout, yellow perch, carp, bluegill, largemouth bass, and bullhead were treated with graded doses of 2,3,7,8-tetrachlorodibenzo-p-dioxin (tcdd; 1, 5, 25, or 125 micrograms/kg) or vehicle, ip. the lethal potency of tcdd tended to be greater in yellow perch, carp, and bullhead than in the other three species (ld50 80 days post-treatment, 3-5 versus 10-16 micrograms/kg, respectively). all species treated with the highest dose of tcdd (125 micrograms/kg) displayed a latency period of 1-4 wee ... | 1988 | 3356307 |
| effects of ligand size on ph and organic phosphate-dependent affinity changes in carp hemoglobin as measured by isonitrile binding. | the equilibria of the binding of methyl and ethyl isonitrile to carp hemoglobin have been measured at three ph values in the presence and absence of inositol hexaphosphate. the binding of methyl isonitrile is characterized by a higher overall dissociation constant, c1/2, and a higher hill coefficient, n, than that of the ethyl derivative. the former is consistent with the greater hydrophobicity of ethyl isonitrile, and the latter is probably due to a greater intrinsic difference or heterogeneity ... | 1988 | 3358940 |
| [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 |
| regional difference in the dendritic morphology of dopamine cells in carp retina. | the dendritic morphology of dopamine (da) cells in the inner plexiform layer of the retina of carp (body length, ca. 33 cm) was investigated by identifying their fluorescent cell bodies in isolated, aldehyde-fixed flat-mounts and injecting them iontophoretically with lucifer yellow ch under microscopic control. attention was paid to clarifying regional differences in their dendritic morphology. in the marginal zone within 0.25 mm from the retinal edge, the density of da cells was extremely high ... | 1988 | 3359333 |
| identification of hypocalcin (teleocalcin) isolated from trout stannius corpuscles. | we have isolated and purified a glycoprotein from the corpuscles of stannius (cs) of trout, which we consider hypocalcin (also called teleocalcin), the major hypocalcemic hormone of fish. this product is present in relatively large amounts in the cs of several species (i.e., european eel, tilapia, goldfish, and carp). hypocalcin is typically released from the cs in response to an experimentally induced increase of the blood calcium concentration. ultrastructural observations show that after this ... | 1988 | 3360288 |
| microridges of oral mucosal epithelium in carp, cyprinus carpio. | the surface of carp oral mucosa is characterized by various patterns of microridges about 0.3 micron wide, 0.1 micron high, and of various lengths. to elucidate the derivation and function of these microridges, the oral epithelium was examined by light- and electron microscopy. microridges were present only on the surfaces of the superficial cells. therefore, microridges on renewed superficial cells have been discarded, and the various patterns of microridges found on the cell surface appear to ... | 2012 | 3365750 |
| light-dependent dynamics of gap junctions between horizontal cells in the retina of the crucian carp. | the dynamics of gap junctions between outer horizontal cells or their axon terminals in the retina of the crucian carp were investigated during light and dark adaptation by use of ultrathin-section and freeze-fracture electron microscopy. light adaptation was induced by red light, while dark adaptation took place under ambient dark conditions. the two principal findings were: (1) the density of connexons within an observed gap junction is high in dark-adapted retina, and low in light-adapted ret ... | 1988 | 3365755 |
| gonadotropin content of the pituitary gland of gonadal tumor-bearing common carp x goldfish hybrids from the great lakes, as assessed by bioassay and radioimmunoassay. | the hybrids of carp (cyprinus carpio) and goldfish (carassius auratus) collected from the lower great lakes between 1978 and 1981 exhibited epizootics of gonadal neoplasm which were rare in the parental species. the pituitary glands of hybrids were, on average, 2.5 times larger than that of carp of similar body size. histologically, the hypertrophy was due to hyperplasia of proximal pars distalis basophils (the presumptive gonadotropes). using a carp gonadotropin (gth) radioimmunoassay it was fo ... | 1988 | 3366360 |
| isolation and properties of the pituitary gonadotropin from silver carp (hypophthalmichthys molitrix). | the gonadotropin of silver carp (scgth) was purified from the pituitary glands in a yield of 8.4 mg/g through extraction with 6% ammonium acetate (ph 5.1)-40% ethanol followed by 80% ethanol precipitation, deae-cellulose chromatography and gel filtration. the molecular weight of scgth is about 32,000 as estimated by gel filtration. leucine and serine were the two n-termini of scgth. the amino acid composition of scgth is rich in aspartic acid/asparagine, glutamic acid/glutamine, valine, proline ... | 1988 | 3366548 |
| [a case of acute renal failure after eating the raw gallbladder of a carp]. | 1988 | 3373090 | |
| characteristics of bipolar-bipolar coupling in the carp retina. | on and off bipolar cells were identified in the light-adapted carp retina by means of intracellular recording and lucifer yellow dye injection. the receptive field centers, determined by measuring the response amplitudes obtained by centered spots of different diameters, were 0.3-1.0 mm for on bipolar cells and 0.3-0.4 mm for off bipolar cells. these central receptive field values were much larger than the dendritic field diameters measured by histological methods. simultaneous intracellular rec ... | 1988 | 3373179 |
| monoclonal antibodies directed against the calcium binding protein parvalbumin. | we have produced twelve monoclonal antibodies (mcab) against carp-ii parvalbumin. three of them, designated 235, 239, 267 recognize determinants conserved in fish, chicken, mouse, rat, monkey and human parvalbumin. we show their use in the qualitative detection of parvalbumin (pv) by immunohistochemistry, in the quantitation of parvalbumin by radioimmunoassay and in the detection of parvalbumin on immunoblots. | 1988 | 3383226 |
| measurement of dc and ac spectral sensitivities of retinal horizontal cells by "voltage clamp by light". | the method of "voltage clamp by light" was applied to measure spectral sensitivities of second-order visual neurons, namely l- and r/g-type horizontal cells in the carp retina. the present equipment employs (i) a ceramic photomodulator to facilitate a fast servomechanical control of retinal illuminance, (ii) an electronic circuit to compensate for the synaptic transmission delay, and (iii) a manual selection switch for the system to operate on negative feedback for either depolarizing or hyperpo ... | 1988 | 3386304 |
| enteric neuromuscular junctions: comparison of ultrastructural features in different phylogenetic groups. | the enteric neuromuscular junctions of snail (helix pomatia), locust (locusta migratoria migratorioides), cockroach (periplaneta americana), carp (cyprinus carpio) and tench (tinca tinca) were studied by means of different light and electron microscopic methods. the nitroblue tetrazolium staining revealed that the myenteric plexuses of the above species are composed of nerve cells, a network of varicose nerves and nerve bundles. instead of highly organized ganglia, single neurons or small groups ... | 1988 | 3393275 |
| large olfactory responses of the carp after complete removal of olfactory cilia. | to study the role of olfactory cilia on olfactory reception, the carp olfactory cilia were removed by modified "ethanol-calcium shock" and the bulbar responses were recorded before and after deciliation. large olfactory responses to various amino acids were observed after complete deciliation. the relation between magnitude of olfactory response and alanine concentration before and after deciliation was essentially unchanged. the present results suggests that the olfactory cilia may not be neces ... | 1988 | 3395341 |
| 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 |
| the adrenergic responses of carp (cyprinus carpio) red cells: effects of po2 and ph. | carp (cyprinus carpio) red cells do not show beta-adrenergic responses when incubated with 10(-5) mol l-1 adrenaline at atmospheric oxygen tension and a ph value close to the in vivo resting ph (approx. 8.1). however, when either the ph or the oxygen tension of the incubation medium is decreased, the adrenergic responses appear, showing that oxygen or an oxygen-linked phenomenon has a direct influence on the response. once present, the adrenergic red cell response is similar to that of trout: ce ... | 1988 | 3404075 |
| calcium action potential in on-off transient amacrine cell of the carp retina. | for accurate measurement of a reversal potential of a postsynaptic potential, it is essential to polarize a postsynaptic neuron uniformly at equipotential levels. so far as the conventional intracellular current injection is employed, uniform polarization cannot be achieved in such neurons as retinal amacrine cells which have extensive dendritic arborizations, and a reversal potential value is inevitably overestimated. in the present experiment, we employed a new technique; carp amacrine cells w ... | 1988 | 3409037 |
| immunoreactive methionine-enkephalin in the caudal neurosecretory system of the carp, cyprinus carpio. | methionine-enkephalin (met-enk) was detected by immunocytochemistry and radioimmunoassay in the caudal neuro-secretory system of the carp cyprinus carpio. some cells showing urotensin i (ui)-immunoreactivity reacted to met-enk antiserum, but others did not. neurons with urotensin ii (uii)-immunoreactivity did not react to met-enk antiserum; neurons with both ui and uii immunoreactivities also displayed a negative met-enk reaction. met-enk was detected by radioimmunoassay in the urophysis, althou ... | 1988 | 3409298 |
| [increment of cone erg during light adaptation--carp retina (in vivo and in vitro)]. | 1988 | 3414455 | |
| isolation and characterization of carp prolactin. | prolactin (prl) was extracted with acid-acetone from common carp (cyprinus carpio) pituitary glands and purified by gel filtration on sephadex g-75, ion-exchange chromatography on deae-cellulose, and reversed-phase high-performance liquid chromatography (hplc) on tsk-gel tms 250 with a yield of 0.7 mg/g wet tissue. at each stage of purification, fractions were monitored by hplc on tsk-gel ods 120t and sodium dodecyl sulfate-polyacrylamide gel electrophoresis (sds-page). carp prl was almost equip ... | 1988 | 3417116 |
| binding of beta-adrenergic antagonists 3h-dha and 3h-cgp 12177 to intact rainbow trout (salmo gairdneri) and carp (cyprinus carpio) red blood cells. | beta-adrenergic ligand binding to trout (salmo gairdneri) and carp (cyprinus carpio) red cells using a hydrophobic (3h-dha) and a hydrophilic (3h-cgp) ligand was studied. conditions which lead to the appearance (in vivo and in vitro hypoxia in carp cells) or disappearance ("winter" acclimation history in trout red cells) of beta-adrenergic responses were associated with either an appearance or marked increase of isoproterenol-displaceable binding (carp), or a disappearance of isoproterenol-displ ... | 1988 | 3417118 |
| 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 |
| experimental verification of the effect of the form (scaly or scaleless) of carp host (c. carpio l.) on the growth rate of micropopulations of gyrodactylus katharineri malmberg, 1964 (monogenea). | it was demonstrated that the growth rate of gyrodactylus katharineri micropopulations parasitizing the fry of cyprinus carpio l. was effected by water temperature and by the form of the fish host (scaly or scaleless). at lower water temperature (12 degrees c) the number of parasites increased in both host forms approximately at the same intensity. in warmer water (18 degrees c), the parasites reproduced intensively only on the scaly form of fish, whereas no parasites were found on the scaleless ... | 1987 | 3428761 |
| 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 |
| interaction of mycoplasma mobile 163k with erythrocytes. | mycoplasma (m.) mobile 163k isolated from fish was investigated for its hemadsorbing, hemagglutinating, and hemolysing capacities and for its ability to adhere to erythrocytes. hemadsorption to the colonies of m. mobile occurred with ovine, bovine, equine, trout, and carp erythrocytes and was inhibited by treatment of the mycoplasmas with substances acting on proteins (pronase, trypsin, glutaraldehyde), heat, uv-irradiation and homologous antiserum. hemadsorption could be prevented also by treat ... | 1987 | 3439386 |
| comparative antioxidant enzyme and lipid peroxidation study in erythrocytes and liver of some freshwater fish. | 1. superoxide dismutase (sod), catalase (c), peroxidase (p) and glutathione peroxidase (gsh-px) were estimated in the erythrocytes and liver of the carp, the tench and the crucian carp during a two-years period, 1983-1984 (autumn). 2. the lipid peroxidation (lp) of the erythrocytes and liver homogenates was also compared. 3. the activities of the enzymes examined showed significant interspecies variations. 4. significant differences were observed between enzyme activities (except for sod in the ... | 1986 | 3442172 |
| 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 |
| 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 |
| 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 |
| morphological study of signal pathway between the somata and the axon terminals of l-type horizontal cells in carp retina. | 1986 | 3464858 | |
| environmental changes induced by growth-associated triggering factors in injured optic nerve of adult rabbit. | central nervous system (cns) neurons of mammals regenerate poorly after axonal injury. however, if an injured cns neuron (rabbit optic nerve) is supplied with appropriate soluble substances ("growth-associated triggering factors") derived from medium conditioned by regenerating fish optic nerve or newborn rabbit optic nerve, it can express regeneration-associated characteristics. such characteristics include a general increase in protein synthesis, changes in synthesis of specific polypeptides, ... | 1987 | 3470808 |
| cloning and sequence analysis of cdna encoding urotensin i precursor. | the primary structure of the precursor of urotensin i, a neuropeptide hormone from the caudal neurosecretory system of the carp cyprinus carpio, has been determined by analyzing the nucleotide sequence of cloned dna complementary to the mrna encoding it. the precursor consists of 145 amino acid residues and the carboxyl terminus represents the 41-amino acid sequence of urotensin i, preceded by lys-arg and followed by gly-lys. sequence homology as well as similar organization of the precursors of ... | 1986 | 3484550 |
| distribution of pancreatic elastase and metalloproteinase in vertebrates. | elastase-like enzymes were detected as zymogens in all of the pancreatic extracts from the gummy shark, bullhead shark, angel shark, smooth hammerhead, bestel, rainbow trout, carp, eel, japanese mackerel, yellowtail, sea bass, parrotfish, bullfrog, chicken, bluewhite dolphin, hog, rat, cat, and dog. the distribution of pancreatic elastase and metalloproteinase was examined on the basis of the effect of specific inhibitors on elastase like-activity in each extract. the results indicate that pancr ... | 1986 | 3484693 |
| phylogenetic studies on lymphokines. fish lymphocytes respond to human il-1 and epithelial cells produce an il-1 like factor. | the results obtained indicate, that catfish peripheral blood lymphocytes recognize and respond to human il-1. the second part of this report is dealing with a substance produced by carp epidermal cells with functional similarities to mammalian il-1. | 1986 | 3490047 |
| monooxygenase activity of fish liver in biomonitoring aquatic environment. | the hepatic biotransformation activity of four cultivated freshwater fish, amur carp (ctenopharyngodon idella), carp (cyprinus carpio), rainbow trout (salmo gairdneri) and tench (tinca tinca) were studied one day after catching the fish from ponds and a river in the south of gdr and in fish kept for two weeks in clean filtrated and deacidified water. aryl hydrocarbon hydroxylase, 7-ethoxycoumarin o-deethylase and 7-ethoxyresorufin o-deethylase activities fell to about 20% during the stay in clea ... | 1986 | 3492989 |
| [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 |
| [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 |
| ruffed cells in the olfactory bulb of freshwater teleosts. i. golgi impregnation. | the olfactory bulbs of barbus meridionalis, carassius carassius, chondrostoma polylepis, cyprinus carpio, tinca tinca and salmo gairdneri were examined by two variants of the golgi technique. we report, for the first time, the existence of ruffed cells in these species. this neuronal type shows a characteristic morphology and location. overall, these cells exhibit a generalised pattern, although there are qualitative and quantitative variations between the various species studied. | 2012 | 3503042 |
| cadmium-binding protein (metallothionein) in carp. | when carp (cyprinus carpio) were exposed to 5 and 30 ppm cd in the water, the contents of cd-binding protein, which has low molecular weight, increased in the hepatopancreas, kidney, gills and gastrointestinal tract with the duration of exposure. this cd-binding protein was purified from hepatopancreas, kidney, gills, and spleen of carp administered 2 mg/kg cd (as cdcl2), intraperitoneally for 6 days. two cd-binding proteins were separated by deae-sephadex a-25 column chromatography. these prote ... | 1986 | 3519201 |
| cytological features of serotonin-containing neurons and their processes in the retina of the carp (cyprinus carpio). an immunohistochemical study using flat-mount preparations. | the morphological features of serotonin-containing neurons (scns) and their processes in the retina of the carp (cyprinus carpio) were immunohistochemically studied by applying a modified peroxidase-antiperoxidase technique using flat-mount preparations. the somata of immunoreactive scns were mostly located in the innermost part of the inner nuclear layer (inl). these cells were distributed at a density of 64.8 cells/mm2, this being similar to the density of dopamine-containing interplexiform ce ... | 1986 | 3522498 |
| immunohistochemical localization of urotensins i and ii in the caudal neurosecretory neurons of the carp cyprinus carpio and the sharks heterodontus japonicus and cephaloscyllium umbratile. | using antisera to urotensins i and ii (ui and uii), in the carp, cyprinus carpio, three types of caudal neurosecretory neurons were identified: those with both ui- and uii-immunoreactivities, those with only ui-immunoreactivity and those with only uii-immunoreactivity. the last type of neurons exceeded the other types in number, while neurons immunoreactive with both ui and uii antisera were relatively few. the axons of neurons of these three types terminated around the capillaries in the urophy ... | 1986 | 3524503 |
| 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 |
| purification of gonadotropic hormone from the pituitary of the african catfish, clarias gariepinus (burchell), and the development of a homologous radioimmunoassay. | glycoprotein gonadotropic hormone (gth) was purified from 2000 pituitaries of male and female african catfish, clarias gariepinus. the first step was chromatography on concanavalin a-sepharose followed by filtration on ultrogel aca 54, chromatography on deae-cellulose, and filtration on ultrogel aca 54, respectively. finally, the purified fractions were analyzed by polyacrylamide gel electrophoresis. the gonadotropic activity in the different fractions was characterized using two tests: the radi ... | 1986 | 3536658 |
| neuropeptide y (npy) immunoreactive neurons in the retina of different species. | neurons displaying neuropeptide y (npy) immunoreactivity were found among amacrine cells in the retina of baboon, pig, cat, pigeon, chicken, frog, trout, carp and goldfish. the immunoreactive cell bodies were located in the middle and the innermost cell rows of the inner nuclear layer with processes forming one, two or three more or less well-defined sublayers in the inner plexiform layer. the location and the density of the sublayers varied with the species investigated. in the frog retina, bip ... | 1986 | 3546220 |
| the influence of environmental temperature on the lymphocyte populations in carp (cyprinus carpio l.). | the influence of environmental temperature upon the lymphocyte populations in carp (cyprinus carpio l.) has been studied by immunoperoxidase labeling using different antisera. in carps kept in a warm and a cool environment, respectively, rabbit anti-carp igm as well as rabbit anti-carp fc antiserum showed different percentages of ig-positive lymphocytes, whereas the percentage remained unaffected by temperature after the use of rabbit anti-carp fab antiserum with a specificity against l-chains. ... | 1987 | 3555478 |
| the thyroxine-stimulating activity is only present in the glycoprotein and not in the protein fraction of a carp hypophyseal homogenate. | the in vivo release of thyroxine (t4) in the carp (cyprinus carpio) and the in vitro release of t4 in the frog (rana ridibunda) from isolated thyroids were used as a bioassay to study the thyrotropic activity of carp hypophyses. the addition of up to 1 hypophyseal equivalent to the medium did not increase the in vitro release of t4 from isolated frog thyroids in november whereas 3 mu of bovine thyrotropin (b-tsh) was effective. however, when this experiment was repeated at the end of february, t ... | 1986 | 3557057 |
| 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 |
| 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 |
| 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 |
| the hypothalamo-hypophysial system of the wild carp, cyprinus carpio l. iii. changes in the anterior and posterior neurohypophysis during spawning. | 1986 | 3590939 | |
| yersinia enterocolitica, yersinia frederiksenii and yersinia intermedia in cyprinus carpio (linneo 1758). | 1987 | 3591113 | |
| 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 |
| 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 |
| 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 |
| functional and morphological correlates of amacrine cells in carp retina. | experiments were conducted on isolated retinas of adult carp (cyprinus carpio) to investigate correlations between photoresponses and morphological features of amacrine cells. the fluorescence dye lucifer yellow ch was iontophoretically injected into single cells which had been characterized electrophysiologically. photoresponses were classified into two main types (transient on-off and sustained), which were further subgrouped into "fast" and "slow" on-off types and into on-center and off-cente ... | 2013 | 3601068 |
| 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 |
| 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 |