Publications
| Title | Abstract | Year Filter | PMID(sorted descending) Filter |
|---|
| the demonstration of chloride ions in the "chloride cells" of the gills of eels (anguilla anguilla l) adapted to sea water. | 1968 | 4894081 | |
| the capillary endothelium in the rete mirabile of the swimbladder of the eel (anguilla anguilla): functional and ultrastructural aspects. | 2016 | 4854670 | |
| renal diuresis and antidiuresis after injections of arginine vasotocin in the freshwater eel (anguilla anguilla l.). | 2016 | 4835434 | |
| coupling of transmural flows of nacl and water in the intestine of the eel (anguilla anguilla). | 1974 | 4832995 | |
| [autoradiographic localization of cl- and na+ ions in the chloride cells of sea water adapted eel (anguilla anguilla l.) gills (author's transl)]. | 1973 | 4795839 | |
| [retinal pigmentary dynamics in the eel (anguilla anguilla)]. | 1973 | 4794671 | |
| [phosphorus absorption by the intestine of the eel (anguilla anguilla l). 1. demonstration and characteristics of in vitro phosphate ion transport in the fresh water eel]. | 1973 | 4794582 | |
| [preliminary research on hemoglobin of anguilla anguilla (l.) caught in abruzzo]. | 1973 | 4790672 | |
| [postlarval developmental stages of anguilla anguilla l. and their anatomical-histological and histochemical criteria]. | 2012 | 4771385 | |
| [experimental arguments in favor of an intragranular localization of the hypothalamo-neurohypophysial hormones of anguilla anguilla l]. | 1973 | 4726040 | |
| two types of lateral line afferents in the eel (anguilla anguilla). | 1973 | 4724993 | |
| on the question of american eels, anguilla rostrata versus european eels, anguilla anguilla. | 1973 | 4724735 | |
| kinetics of water and chloride exchanges during adaptation of the european eel to sea water. | 1973 | 4705619 | |
| metabolic effects of epinephrine and norepinephrine in the eel anguilla anguilla l. | 1973 | 4689582 | |
| [effect of hypophysectomy and prolactin treatment of gill n-acetyl-neuraminic acid content in the eel, anguilla anguilla l]. | 1972 | 4661993 | |
| [changes in turnover levels and distribution space of chlorine in the european eel, anguilla anguilla l., transferred from fresh water to sea water]. | 1972 | 4654462 | |
| metabolic effects of technical pentachlorophenol (pcp) on the eel anguilla anguilla l. | 2015 | 4653160 | |
| plasma cortisol concentrations in two teleost fishes, anguilla anguilla l. and carassius auratus l.: a comparison of two assay systems. | 1974 | 4608521 | |
| metabolic and hematological studies on the yellow and silver phases of the european eel, anguilla anguilla l. iii. hematology. | 2015 | 4452232 | |
| metabolic and hematological studies on the yellow and silver phases of the european eel, anguilla anguilla l. ii. fatty acid composition. | 1974 | 4452231 | |
| metabolic and hematological studies on the yellow and silver phases of the european eel, anguilla anguilla l. i. carbohydrate, lipid, protein and inorganic ion metabolism. | 2015 | 4452230 | |
| proceedings: in-vitro electrolyte metabolism of kidney slices of freshwater- and seawater-adapted eels, anguilla anguilla l. | 1974 | 4443699 | |
| effects of insulin and of metabolite loading on blood metabolites in the european silver eel, (anguilla anguilla l.). | 1974 | 4413146 | |
| [the influence of adaptation to seawater on the function of the interrenal gland of auguilla (anguilla anguilla l.)]. | 1974 | 4411166 | |
| effects of glucagon administration to eels (anguilla anguilla l.). | 1972 | 4405347 | |
| metabolism of intraperitoneally injected 14 c-histamine in the yellow eel (anguilla anguilla). | 1971 | 4397612 | |
| pressor effects of neurohypophysial peptides in the eel, anguilla anguilla l., with some reference to their interaction with adrenergic and cholinergic receptors. | 1969 | 4390463 | |
| enzyme activity patterns in white and red muscle of the eel (anguilla anguilla) at different developmental stages. | 2015 | 4342454 | |
| effects of stanniectomy and hypophysectomy on total plasma cortisol levels in the eel (anguilla anguilla l.). | 1972 | 4340079 | |
| the cellular localization of lactate dehydrogenase in skeletal muscle of eel (anguilla anguilla). | 1972 | 4337707 | |
| structure of the pineal organs of anguilla anguilla l. and lebistes reticulatus peters (teleostei). | 1971 | 4330408 | |
| effects of salinity, hypophysectomy and corticotrophin or branchial na- and k-activated atpase in the eel, anguilla anguilla l. | 2015 | 4326155 | |
| [effect of ablation of the corpuscles of stannius on interrenal function in the eel (anguilla anguilla l)]. | 1970 | 4322662 | |
| in vitro action of calcium ions on the interrenal corticosteroidogenesis of the eel (anguilla anguilla l.). | 1970 | 4313745 | |
| renal function in the european eel (anguilla anguilla l.): effects of the caudal neurosecretory system, corpuscles of stannius, neurohypophysial peptides and vasoactive substances. | 1969 | 4304382 | |
| histological observations on pituitary acth-cells, adrenal cortex, and the corpuscles of stannius of the european eel (anguilla anguilla l.). | 1967 | 4292951 | |
| pressor activity in extracts of the corpuscles of stannius from the european eel (anguilla anguilla l.). | 1966 | 4286639 | |
| failure of corpuscles of stannius of the european eel (anguilla anguilla l.) to produce corticosteroids in vitro. | 1965 | 4284764 | |
| the nature and properties of the inducible sodium-plus-potassium ion-dependent adenosine triphosphatase in the gills of eels (anguilla anguilla) adapted to fresh water and sea water. | 1. gill tissue from eels adapted to fresh water or to sea water was disrupted in 0.32m-sucrose containing 0.1% (w/v) sodium deoxycholate and the subcellular distribution of (na(+)+k(+))-dependent adenosine triphosphatase was determined. 2. about 70% of the recovered enzyme was in a fraction sedimenting between 225000g(av.)-min and 6000000g(av.)-min; the specific activities of enzymes from tissues of freshwater and seawater eels were 16 and 51 mumol of phosphate/h per mg of protein respectively. ... | 1974 | 4282472 |
| [response of the stannius corpuscles of the eel (anguilla anguilla l.) to experimental injuries]. | 1967 | 4234326 | |
| [experimental data on the contamination of anguilla anguilla (l.) by chromium 51 and its excretion]. | 1973 | 4196613 | |
| chemical differences in the blood of yellow and silver phases of the european eel ("anguilla anguilla" l.). | 1969 | 4188408 | |
| [neuro-intermediate lobe and osmoregulation: comparison of the european eel and the cultured japanese eel during a transfer from fresh water to sea water]. | 2014 | 4187662 | |
| activity of the hypothalamo-neurohypophysial complex of the european eel (anguilla anguilla l.) assessed by the use of an in situ staining technique and by autoradiography. | 1969 | 4184999 | |
| studies on the structure, ultrastructure and function of the subcommissural organ-reissner's fibre complex of the european eel anguilla anguilla l. | 1968 | 4177116 | |
| cell types in the pituitary of the eel, anguilla anguilla l., at different stages in the life-cycle. | 1966 | 4166123 | |
| urea, inulin and para-amino-hippuric acid (pah) excretion by the gills of the eel, anguilla anguilla l. | 1974 | 4156279 | |
| metabolic effects of starvation in the eel, anguilla anguilla l. | 1973 | 4145756 | |
| evolution of the branchial sodium outflux and its components, especially the na-k exchange and the na-k dependent atpase activity during adaptation to sea water in anguilla anguilla. | 1972 | 4144135 | |
| [absorption of phosphate ion by eel intestine (anguilla anguilla l.). comparison of two methods of studying in vitro transport at the muscosal level]. | 1974 | 4141409 | |
| the effect of change of background colour on the ultrastructure of the pars intermedia of the pituitary of the eel (anguilla anguilla). | 1974 | 4138974 | |
| further observations on the presence of wandering phagocytes within the teleostean retina. | a previous report by this author has noted the presence of wandering phagocytes at the photo-receptor-retinal epithelial interface in five teleostean species. a further 5 species have now been investigated by electron microscopy and again all specimens examined consistently show the presence of this population of phagocytes. the new species studied are the goldeye (hiodon alosoides), the yellow eel (anguilla anguilla), the archer fish (toxotes jaculatrix), the goldfish (carassius auratus) and th ... | 1985 | 4073522 |
| [plasma levels, metabolic clearance rates, and rates of secretion of testosterone and estradiol-l7 beta in the silver eel (anguilla anguilla l.)]. | testosterone (t) and 17 beta-estradiol (e2) plasma levels and metabolic clearance rates (mcr) were measured to investigate their ovarian production in immature silver eel. the dynamics of t and e2 metabolism were studied in catheterized eels using single injections of 0.2 to 0.5 microci 3h-labeled steroid. the distribution volumes, biological half-life and mcr of nonconjugated tracers were calculated on the basis of a two-compartment model. at the end of the experiments, radioactivity was measur ... | 2014 | 4043727 |
| the shifting of the aortic origin of the brachial arteries in the metamorphosing eel anguilla anguilla (l.), with remarks on the shifting mechanisms in arterial junctions in general. | in silver eels the arteries supplying the pectoral girdles and fins, arise from a common trunk which branches off from the dorsal aspect of the dorsal aorta, while the origin of this trunk is found at the ventral aspect of the aorta in the leptocephalus larva. the rearrangement of the origin of this trunk is mainly accomplished during metamorphosis, and is related to the rearrangement of the junction of the epibranchial arteries and the aorta. the processes of remodelling the wall of the vessels ... | 2014 | 4013636 |
| morphohistochemical changes in hepatocytes during the life cycle of the european eel. | the comparative analysis of morphological, histochemical and cytochemical patterns of eel (anguilla anguilla l.) hepatocytes reveals clear differences between two stages of its life cycle, i.e. the trophic stage (yellow eel) and reproductive stage (silver eel). the storage of glycogen prevails in the yellow eel, whilst lipids appear to be remarkably increased in the silver eel, in which some hepatocytes also show glycogen-rich areas. generally, in the silver eel dehydrogenase and acid phosphatas ... | 2012 | 4002214 |
| retinal fine structure in the european eel anguilla anguilla. iv. photoreceptors of the yellow eel stage. | the complex life cycle of the european eel (anguilla anguilla) involves a long catadromous migration during which the eye undergoes a number of morphological alterations. this report deals with the fine structure of the photoreceptors of the yellow eel stage and is part of a comparative study of the retina of the eel during the major stages of its life cycle. the photoreceptors of the yellow eel are easily divisible into rods and single cones and the rods at least appear to be capable of retinom ... | 1985 | 3993962 |
| the existence of three different viral agents in a tumour bearing european eel (anguilla anguilla). | 1985 | 3922177 | |
| control of renal and adrenocortical function by the renin-angiotensin system in two euryhaline teleost fishes. | plasma ions and cortisol levels were measured sequentially during the adaptation of european eels (anguilla anguilla) from fresh water (fw) to sea water (sw). the importance of the renin-angiotensin system in the regulation of this adaptation was assessed using captopril (sq14225, an inhibitor of angiotensin i-converting enzyme). the effects of captopril on renal function in fw- and sw-adapted trout were also examined. during the first 5 hr in sea water, plasma levels of cortisol in eels increas ... | 1985 | 3886478 |
| [demonstration of specific binding sites for carp gonadotropin in ovary membrane preparations of anguilla (anguilla anguilla l.)]. | membrane preparations from silver eel ovary bind specifically labeled carp gonadotropin (cgth 125i); similar preparations from kidney, liver, brain, and muscle exhibit either no or negligible specific binding. cgth and partially purified eel pituitary extract, but neither hcg nor btsh, inhibit cgth 125i specific binding in a dose-dependent way. however, a high membrane concentration can bind hcg 125i and this binding is partly inhibited by excess hcg, thus suggesting the existence of a relativel ... | 1987 | 3817443 |
| testis cytological structure, plasma sex steroids, and gonad cytosol free steroid receptors of heterologous gonadotropin (hcg)-stimulated silver eel, anguilla anguilla l. | complete testicular maturation was induced in silver eels, kept at 24 degrees in fresh water, by a single injection of 1000 i.u. of heterologous gonadotropin (hcg). each week, for 4 weeks, some eels were examined for testis structural pattern, plasma sex steroids, and gonad cytosol steroid receptors. the first effect of the hcg was on the tubular organization of the testis, followed by spermatogenesis. plasma androgens were not detectable in the untreated eels, whereas a peak was detected a week ... | 1987 | 3817439 |
| [experimental approach to the role of the paratenic host in the circulation of the parasite bothriocephalus claviceps goeze, 1782 (cestoda, pseudophyllidea)]. | this article concerns an experimental work monitored in 5 species of fishes in the order to evaluate their value of paratenic hosts, in the cycle of bothriocephalus claviceps, a parasite of the eel, anguilla anguilla. the intestinal localisation and the lack of development of parasites are the two principal characters of this parasitism. the second character is sometimes contradicted. the effective evolution has been observed during 20 days. the more important losses of parasites coincide with t ... | 1986 | 3813425 |
| melanin concentrating hormone inhibits the release of alpha msh from teleost pituitary glands. | a radioimmunoassay was developed for salmonid melanin concentrating hormone (mch) and used to measure immunoreactive (ir)mch in the hypothalamus and pituitary of trout (salmo gairdneri) and eels, (anguilla anguilla) maintained under different regimes of background color. in trout, 95% of the total irmch was located in the pituitary gland. the amount of mch in both pituitary and hypothalamus was increased when white-adapted trout were transferred to a black background. in eels, a similar change o ... | 1987 | 3803904 |
| cutaneous and gill o2 uptake in the european eel (anguilla anguilla l.) in relation to ambient po2, 10-400 torr. | the partition of o2 uptake between gills and skin was examined in the freshwater eel (anguilla anguilla l.) at ambient po2 ranging from hyperoxia (po2 = 400 torr) to severe hypoxia (po2 = 10 torr), using a technique of open-flow respirometry. all the expired water was collected, and the ventilatory flow and the mixed expired water po2 were directly measured. the ventilatory water flow decreased moderately in hyperoxia, increased markedly between normoxia and 40 torr, and below 40 torr, hypervent ... | 1986 | 3797848 |
| effects of hypophysectomy on the testis of the european eel (anguilla anguilla l.). | the pituitary control of testis activity in the freshwater silver european eel (anguilla anguilla l.) was investigated by study of some variations of gonad structure and particularly changes in plasma levels of testosterone and 11-oxotestosterone (radioimmunoassay) following hypophysectomy. germ cells comprised only spermatogonia, which were associated with sertoli cells to form cysts. no mitotic activity of spermatogonia was observed. gonadosomatic index (gsi) was low. plasma levels of the main ... | 1986 | 3770433 |
| is mucus involved in biocrystallization? study of the intestinal mucus of the sea-water eel anguilla anguilla l. | freeze-dried intestinal mucus of sea-water-adapted eels was analysed by scanning electron microscopy (sem) and x-ray microanalysis. calcite crystals were observed in the mucus fibres; their concentration increased along the hindgut. random sem observations made in situ indicated that mucus fibres were involved in the genesis of these crystals. calcium-rich mucus globules were found fused inside crystal matrices. single typical rhombohedric crystals of various complexity appeared within the mucus ... | 1986 | 3757019 |
| na-dependent d-glucose and l-alanine transport in eel intestinal brush border membrane vesicles. | brush border membrane vesicles (bbmv) were prepared from eel (anguilla anguilla) intestine by a mg-ethylene-glycol-bis(beta-aminoethylether)-n,n'-tetraacetic acid precipitation technique; the bbmv were enriched 16, 12, and 13 times in leucine aminopeptidase, maltase, and alkaline phosphatase activities with respect to the starting mucosal scraping. d-[3h]glucose and l-[3h]alanine transport by these vesicles was studied by a rapid filtration technique. d-glucose uptake was stimulated by a transme ... | 1986 | 3752280 |
| the ca++ permeability of the apical membrane in neuromast hair cells. | the mechanosensitivity of eel (anguilla anguilla) neuromasts was measured by the impulse responses of single afferent nerve fibers to mechanical stimuli. it is dependent on the potential across the skin and on the ions in the water outside the apical membrane of the sensory cells. the mechanosensitivity decreases to zero when the skin is polarized by 10-100 mv cathodal dc (skin surface negative); it increases with increasing (10-60 mv) anodal dc and remains remarkably constant with higher polari ... | 1986 | 3735160 |
| the relationship of saccular efferent neurons to the superior olive in the eel, anguilla anguilla. | in the eel, horseradish peroxidase was applied to the saccular ramus of the eight nerve to label auditory efferent neurons and was injected into the torus semicircularis to identify the superior olive. efferent somata cluster close to the lateral lemniscus. the superior olive is also associated with the lateral lemniscus and is situated just rostral to and contiguous with the efferent population. efferent cells can be distinguished from superior olivary neurons because of their larger size and t ... | 1986 | 3725216 |
| co-existence of congeneric species of acanthocephala: acanthocephalus lucii and a. anguillae in eels anguilla anguilla in ireland. | a population of eels anguilla anguilla from lough derg, r. shannon, ireland, harbouring infections of both acanthocephalus lucii and a. anguillae was studied over three years. both parasite species had the same intermediate host and eels appeared to be the only definitive host for a. anguillae. throughout the whole period, a. lucii was the dominant parasite, was over-dispersed throughout the eel population and most frequently occurred as a single species infection. a. anguillae was far less comm ... | 1987 | 3696765 |
| comparative studies on lipid metabolism in various salt transporting organs of the european eel (anguilla anguilla). mono-unsaturated phosphatidylethanolamine as a key substance. | 1. incorporation in vivo into tissue lipids of (1-14c)acetate added to the water in the incubation tank showed the same relative distribution pattern of 14c-activity among various phospholipids in the gills, the esophagus and the intestine, when the eel was incubated in sea-water; in fresh water this pattern was found only in the intestine, while both the gills and the esophagus showed a relative excess of 14c-label in phosphatidylethanolamine (pe). 2. similar studies with (32p)phosphate also sh ... | 1987 | 3677610 |
| induction of spermatogenesis and spermiation by a single injection of human chorionic gonadotropin in intact and hypophysectomized immature european eel (anguilla anguilla l.). | intact and hypophysectomized male silver eels (anguilla anguilla) in fresh water received a single injection of human chorionic gonadotropin (hcg) (250 c) or solvent (0.15 m nacl). no effect of solvent was observed. spermatogonia proliferated in testis of hcg-treated intact or hypophysectomized eels. one month after the injection, primary and secondary spermatocytes were found. after 3 months, numerous spermatozoa were present. in hypophysectomized eels, hcg was also effective even though maturi ... | 1987 | 3666426 |
| plasma concentrations of ovarian steroids in the freshwater european silver eel (anguilla anguilla l.): effects of hypophysectomy and transfer to sea water. | intact and hypophysectomized freshwater (fw) silver eels were transferred to tanks of fw or artificial sea water (sw; salinity = 0.60 osmol/l) which were simultaneously renewed twice a week. fish were killed 2 months after transfer and plasma was assayed for ovarian steroids. in all fish, 5 alpha-androstane-3 beta,17 beta-diol was present, while 5 alpha-dihydrotestosterone and 5 alpha-androstane-3 alpha,17 beta-diol were undetectable. in intact fw eels, plasma levels of testosterone, 5 alpha-and ... | 1987 | 3655616 |
| the concept of specificity in the procercoid-copepod system: bothriocephalus claviceps (cestoda) a parasite of the eel (anguilla anguilla). | this paper describes experimental work on parasite specificity in the copepod-procercoid system of bothriocephalus claviceps. two criteria were used to characterize five potential host species macrocyclops albidus, macrocyclops fuscus, eucyclops serrulatus, acanthocyclops robustus and macrocyclops viridis viridis. the first criterion involves susceptibility of the copepods to infection. the results show random or aggregative distributions and variable susceptibilities according to the species. w ... | 1987 | 3575289 |
| the effects of neurohypophysial hormones on the vascular resistance of the isolated perfused gill of the european eel, anguilla anguilla l. | arginine vasotocin (avt) and oxytocin (oxy), in the dose range of 2 x 10(-13)-2 x 10(-8) mol, were found to be potent vasoconstrictors of the arterioarterial pathway of isolated perfused eel gills. avt was significantly (p less than 0.05) more potent than oxy, as indicated by the results of both dose- and concentration-response curves. isotocin (it) and arginine vasopressin (avp) were unable to elicit a vascular response at doses of up to 2 x 10(-8) mol. the arteriovenous component of branchial ... | 1986 | 3557080 |
| activation of trout gill amp deaminase by an endogenous proteinase--iii. comparative studies on the gill amp deaminase from different fresh water and sea water teleosts. | the effects of monovalent cations and inorganic phosphate, on gill amp deaminase, were compared in different fresh water and sea water stenohaline and euryhaline teleosts. generally, sea water species displayed a lower sensitivity to these effectors than fresh water species. during salinity changes, the sensitivity of gill amp deaminase to cations and phosphate were modified proportionally to the tolerance of a given species to variations of environmental salinity. in particular, these parameter ... | 1986 | 3533411 |
| ovarian metabolic pathways of steroid biosynthesis in the european eel (anguilla anguilla l.) at the silver stage. | ovarian slices of the european eel at the silver stage were incubated with 4 tritiated precursors (pregnenolone, progesterone, androstenedione, testosterone) in the presence or not of an inhibitor of 11 beta-hydroxylase activity, metopirone. ether extracts were submitted to a gradient elution chromatography on celite columns. isolated peaks were identified by isopolarity on tlc, microchemical reactions and recrystallization to constant specific activity. interpretation of the results shows that ... | 1986 | 3517503 |
| parasitological study of a population of tiber river eels (anguilla anguilla). | a study was conducted on the parasitofauna of anguilla anguilla caught in the section of the tiber river south of rome (italy). the sample examined consisted of 417 specimens that were classified by stage (elver, young yellow eel, yellow eel and silver eel) and season of sampling. the following species were identified: trypanosoma granulosum, eimeria anguillae, myxidium giardi, sphaerospora reichenowi, myxobolus sp., trichodina anguilli, ichthyohodo sp., gyrodactylus anguillae, bothriocephalus c ... | 1987 | 3508508 |
| co-localization and secretion of parathyrin of stannius corpuscles (immunoreactive parathyroid hormone) and of secretory glycoproteins including secretory protein-i in the european eel (anguilla anguilla l.). | until recently, teleosts were considered to be devoid of parathyroids. we showed recently that the corpuscles of stannius, that structurally have features in common with the parathyroid gland, produce a molecule resembling mammalian parathyroid hormone (pth). we refer to this molecule as parathyrin of corpuscles of stannius (pcs). parathyroid secretory protein-i (sp-i) is an acidic glycoprotein, probably identical to adrenal chromogranin a, that is co-stored and co-secreted with pth. in the pres ... | 1987 | 3504727 |
| daniconema anguillae gen. et sp. n., a new nematode of a new family daniconematidae fam. n. parasitic in european eels. | a new nematode genus and species, daniconema anguillae gen. et sp. n., is described from the serosa of the swimbladder and from the intestine of eels (anguilla anguilla (l.] from denmark (lake esrum, northern zealand); a new family daniconematidae fam. n. is established to accommodate it. the hitherto monotypic family daniconematidae shows affinities with the skrjabillanidae; in contrast to the latter, the new family is characterized by the absence of a buccal capsule, by the presence of anus in ... | 1987 | 3428765 |
| the nutrition of the gill parasitic monogenean pseudodactylogyrus anguillae. | a histological and histochemical study of ingested food material, energy stores and enzymes in the monogenean pseudodactylogyrus anguillae, parasitizing the gills of the european eel (anguilla anguilla) is presented. it was found that mucus, epithelial cells and blood from the gills were ingested. glycogen deposits were small and primarily located in the parenchyma and to a minor extent in the vitellariae. numerous globules of neutral lipids were found in the vitellariae. a marked esterase activ ... | 1987 | 3422977 |
| diel and seasonal rhythms of the heart rate in the common eel (anguilla anguilla l.): role of cardiac innervation. | using a computerized system, ecg recordings of eels were made during long-term experiments, to show circadian and circannual variations in the heart rate. the circadian variations synchronize with the photoperiod. the maximum frequency is observed during the dark phase, the peak values occurring just after sunset and before sunrise. by using specific blockers--atropine, propranolol, desmethylimipramine--the respective roles of neurotransmitters (acetylcholine and catecholamines) were evaluated. ... | 1988 | 3384071 |
| solubility of nitrogen and argon in eel whole blood and its relationship to ph. | the solubility coefficients (alpha) for the inert gases, nitrogen (n2) and argon (ar), were measured by mass spectrometry in whole blood of the freshwater-adapted european eel, anguilla anguilla, at varied ph and at two temperatures, 5 and 15 degrees c. the ph was altered either by varying pco2 (0.75-75 mmhg; 1 mmhg = 133.3 pa) or by adding fixed acid (hcl or lactic acid). no dependence of alpha on ph (range 5.5-8.4) or on lactate concentration (range 0.2-25 mmol l-1) was detectable. average val ... | 1988 | 3373142 |
| a peptide from the eel pancreas with structural similarity to human pancreatic secretory trypsin inhibitor. | the primary structure of a 61-amino-acid residue peptide from the pancreas of the european eel (anguilla anguilla) has been established as e e k s g(5)l y r k p(10)s c g e m(15)s a m h a(20)c p m n f(25)a p v c g(30)t d g n t(35)y p n e c(40)s l c f q(45)r q n t k(50)t d i l i(55)t k d d r(60)c. there was no indication of microheterogeneity. this peptide shows structural similarity to pancreatic secretory trypsin inhibitors from several mammalian species and to a cholecystokinin-releasing peptid ... | 1988 | 3371360 |
| 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 |
| structural studies of nerve terminals containing melanin-concentrating hormone in the eel, anguilla anguilla. | eels were adapted to black- or white-coloured backgrounds and the pituitary glands were prepared for light and electron microscopy. immunocytochemical staining was used to study the distribution of the neurohypophysial melanin-concentrating hormone in the neurointermediate lobe. the hormone was located in small, elliptical, electron-opaque neurosecretory granules, measuring approximately 120 x 90 nm. the neurones terminated on blood vessels in the centre of the neurohypophysis and on the basemen ... | 1988 | 3345554 |
| coexistence of corticotropin-releasing factor-like immunoreactivity and vasotocin in perikarya of the preoptic nucleus in the eel. | a corticotropin-releasing factor (crf)-like system has been identified in eels (anguilla anguilla, a. rostrata, and a. japonica) with immunocytochemical techniques. immunoreactive perikarya were located in the preoptic area, in magno- and parvocellular regions of the preoptic nucleus. fine fibers reached the pituitary and terminated in the neurohypophysis close to the corticotropic cells of the rostral pars distalis and caudally close to the melanocorticotropic cells of the intermediate lobe. do ... | 2012 | 3286370 |
| arginine vasotocin binding to isolated branchial cells of the eel: effect of salinity. | binding of 125i-labelled arginine vasotocin (avt) was studied in isolated intact gill cells obtained from eels (anguilla anguilla) adapted to fresh water (fw) or to sea water (sw). experiments carried out at 20 degrees c showed maximum and stable binding beyond 10 min of incubation. specific binding, determined by using labelled peptide in the presence or absence of an excess of unlabelled hormone, represented 30-50% of total and was reversible, with a half-time of less than 5 min. scatchard plo ... | 1988 | 3255360 |
| efficacy of fumagillin against myxidium giardi cépéde, 1906 infection of the european eel (anguilla anguilla): new observations on myxidiosis of imported glass eels. | 1988 | 3254089 | |
| a study of barosensitivity in the european eel (anguilla anguilla, l.): effects of arterial pressure changes on heart rate and ventilation. | a study of the effects of arterial pressure changes on heart rate and ventilation was carried out on the eel (anguilla anguilla l.). the anatomical characteristics of this fish enabled extracorporeal circulation in both the ventral and dorsal aorta to be set up. the pressure was changed mechanically, either by clamping external circulations or, in some cases, by modifying the frequency of a pulsatory pump placed in series with the heart, thus ensuring constant blood flows in the ventral aorta. t ... | 1988 | 3220126 |
| the mechanical properties of polyneuronally innervated, myotomal muscle fibres isolated from a teleost fish (myoxocephalus scorpius). | single or small bundles of fibres were isolated from the abdominal myotomes of the sculpin myoxocephalus scorpius, a teleost with a polyneuronal pattern of fast muscle innervation. fibres responded to a supra-threshold stimulus with an all-or-none twitch. tetanic fusion frequency at 3 degrees c was 40-60 hz, and the twitch tetanus ratio 0.70. maximum isometric tension was 281 kn m-2. similar isometric contractile properties were obtained from the focally innervated fast muscle fibres of another ... | 1988 | 3194174 |
| retinal fine structure in the european eel anguilla anguilla. viii. photoreceptors of the sexually mature silver eel stage. | the morphology of the photoreceptors of the sexually mature silver eel has been investigated by electron microscopy and these findings compared with observations made on the photoreceptors of the glass, yellow and sexually immature silver eel stages of the lengthy life cycle of the european eel (anguilla anguilla). as in previous stages the photoreceptors of the sexually mature silver eel are adequately described as either rods or single cones. the rod: cone ratio at this stage is about 200: 1 w ... | 1988 | 3189854 |
| retinal fine structure in the european eel anguilla anguilla. vii. pigment epithelium of the sexually mature silver eel stage. | this report describes the morphology of the retinal pigment epithelium (rpe), bruch's membrane and choriocapillaris in the sexually mature silver eel and compares these observations with previous descriptions of this region in the glass, yellow and sexually immature silver eel stages of the lengthy life cycle of the european eel. the retinal epithelium in the sexually mature silver eel is a single layer of cuboidal to squamous cells joined laterally by apically located cell junctions. both the b ... | 1988 | 3189844 |
| retinal fine structure in the european eel anguilla anguilla. vi. photoreceptors of the sexually immature silver eel stage. | this report deals with the fine structure of the photoreceptors of the sexually immature silver eel and compares these findings with previous observations on the glass and yellow eel stages of the life cycle of the european eel. the photoreceptors of the sexually immature glass eel are readily categorized as either rods or cones. no multiple cones are observed. the rod:cone ratio is about 100:1, which is greater than that of either the glass or yellow eel stages. rods and perhaps cones also are ... | 1988 | 3189834 |
| retinal fine structure in the european eel anguilla anguilla. v. pigment epithelium of the sexually immature silver eel stage. | the fine structure of the retinal pigment epithelium (rpe), bruch's membrane and choriocapillaris has been investigated in the sexually immature silver eel and compared with previous observations made at the glass and yellow eel stages of the lengthy life cycle of the european eel. as in the previous stages the retinal pigment epithelium of the sexually immature silver eel consists of a single layer of cuboidal to squamous cells joined laterally by apically located cell junctions. the basal (scl ... | 1988 | 3189826 |
| na-dependent l-proline transport by eel intestinal brush-border membrane vesicles. | l-[3h]proline uptake by brush-border membrane vesicles prepared from intestinal mucosa of the european eel, anguilla anguilla, was stimulated by a transmembrane na gradient (out greater than in). kinetic analysis of l-proline influx, under short-circuited membrane potential conditions, indicated the presence of an apparent single na-dependent carrier process (kapp = 0.23 +/- 0.04 mm and jmax = 7.96 +/- 0.87 nmol.mg protein-1.min-1) and a nonsaturable transfer component with an apparent diffusion ... | 2011 | 3177696 |
| detection of surface carbohydrates on pneumocystis carinii by fluorescein-conjugated lectins. | lectins react with a wide range of different carbohydrates (table 1). even so-called monospecific anti-h(o) lectins from lotus tetragonolobus, ulex europaeus, and anguilla anguilla react not only with the anti-h determinant but also with several fucosylated carbohydrates. consequently, the type of lectin receptor existing on the surface of pneumocystis carinii should be determined, because only a carbohydrate analysis can demonstrate the kind of carbohydrates which exist on the cell surface of t ... | 1987 | 3125541 |
| capacity of the european eel (anguilla anguilla) to elongate and desaturate dietary linoleic acid. | the ability of eels (anguilla anguilla) to further desaturate and chain elongate linoleic acid, 18:2n-6, was studied by feeding diets containing either corn oil or a fish oil to groups of elvers for 12 wk and analyzing proportions of fatty acids in tissue lipids. over the 12-wk period elvers given both dietary treatments increased in weight by fourfold. the proportion of arachidonic acid, 20:4n-6, present in polar lipids of elvers fed the diet containing corn oil increased from an initial value ... | 1987 | 3114442 |
| [in vitro translation of rna extracted from corpuscules of stannius of the eel (anguilla anguilla); identification of the precursor of parathyrin in the corpuscules of stannius (pcs)]. | corpuscles of stannius (cs) of teleosts secrete a pth like hormone (parathyrin of cs: pcs) which is involved in calcium metabolism by acting mainly at the gill level. translated products encoded by mrna extracted from eel corpuscles of stannius and among these, translated products immunoprecipitated by anti b-pth immunserum were compared to the products synthetized during incubation of the glands with labelled methionine. the analysis was performed by polyacrylamide gel electrophoresis and fluor ... | 1987 | 3105830 |
| [accumulation of cyclic adenosine monophosphate in the ovary of the eel (anguilla anguilla l.) in vitro under the effect of carp gonadotropin or ovine lutropin: kinetics and thermodependence]. | cyclic amp (camp) in pieces of eel ovary was greatly increased in vitro by the gonadotropin (cgth) of carp, another teleost fish; after one hour at 20 degrees c, maximal stimulation = 31.7 and e.d. 50 = 0.08 micrograms/ml. ovine lutropin (olh) had less effect (maximal stimulation: 2.35; e.d. 50: 1.42 micrograms/ml); its action suggested that it involved a subfraction (olh/cgth rac) of the receptor-adenylate cyclase (rac) systems which mediate the action of cgth. another difference was the percen ... | 1986 | 3012723 |
| comparative aspects of circulating erythrocytes in the trophic and reproductive phases of european eel. ultrastructure and cytochemistry. | different cytochemical and morphological parameters were used to compare the functional patterns of the erythrocytes in the transition from the trophic (yellow eel) to the reproductive (silver eel) phases of european eel (anguilla anguilla l.). data on the nucleus were obtained by microdensitometric (feulgen reaction) and cytofluoremetric (propidium iodide and hoechst 33342 fluorochromization) evaluations of dna staining intensity. in the silver eel, chromatin condensation was more heterogeneous ... | 1985 | 2935220 |