| immunochemical studies of guinea pig progesterone-binding plasma protein. | an antiserum specific for guinea pig progesterone-binding plasma protein (pbp) has been prepared. using a very sensitive immunoenzymatic assay, pbp could be detected not only in pregnant guinea pig plasma (970 microgram/ml of plasma at day 40--60 of pregnancy), but also in the plasma of fetuses (2.77 micrograms/ml), umbilical arteries (1.79 micrograms/ml), umbilical vein (2.90 micrograms/ml), and in amniotic fluid (0.47 microgram/ml). the protein was also found in low concentration in the plasma ... | 1978 | 85546 |
| anatomic and histologic structure of the sympathetic trunk in the coypu (myocastor coypus molina). | | 1977 | 303600 |
| non-constant evolution rates in amino acid sequences of guinea pig, chinchilla and coypu pancreatic ribonucleases. | | 1975 | 1110772 |
| [update on the presence of taste buds on the laryngeal surface of the epiglottis]. | previous investigations have ascertained, according to the results obtained by bradley et al. (1980) in the sheep, that the laryngeal surface of the epiglottis of goat and bovine is always provided with numerous taste buds. these observations have verified in other ruminant species, as the moufflon and the buffalo, the validity of the above-named datum and have ascertained that it is always inconstant in the other animal species considered (wild boar, coypu). these taste buds show a typical stru ... | 1991 | 1781723 |
| [detection of streptococci from various serological groups in animals]. | during the period from 1985 to 1988 we determined 228 strains of streptococci isolated from samples of various sorts of biomaterials, mainly animals. from this set of streptococci we classified 207 strains into serological groups according to the lancefield classification and about 30% strains into species by means of serological and biochemical methods. most of the strains were allocated to group c (37.28%) and group q (17.39%). 89 streptococci strains originated from pigs, 40 strains from hors ... | 1989 | 2631378 |
| [fertilizing capacity of the ejaculate of nutria (myocastor coypus) after the removal of the seminal vesicles as evaluated by the penetration test and natural mating]. | the fertility of male coypu sperm following seminal vesicle extirpation was investigated using the penetration test into the egg of syrian golden hamster (mesocricetus auratus). ejaculates were obtained from five males by means of electro-ejaculation under halothane narcosis. the results of the zona-free hamster eggs (zfhe) penetration test showed that the ejaculates of all the surgically treated coypu males were fertile and that zfhe value fluctuated from 54 to 76.6%. the results obtained in ex ... | 1989 | 2678717 |
| [meningoencephalitis with a fatal outcome in a breeder of nutrias]. | | 1987 | 2838888 |
| comparative study of treponema strains isolated from swine and nutria. | | 1986 | 2953197 |
| [the occurrence of bacterial infections in the swamp beaver (myocaster coypus molina, 1782). 3. streptococcal, staphylococcal, aeromonas and actinobacillus infections]. | | 1988 | 3219032 |
| molecular evolution of rodent insulins. | several trees of amino acid sequences of rodent insulins were derived with the maximum-parsimony procedure. possible orthologous and paralogous relationships were investigated. except for a recent gene duplication in the ancestor of rat and mouse, there are no strong arguments for other paralogous relationships. therefore, a tree in agreement with other biological data is the most reasonable one. according to this tree, the capacity to form zinc-binding hexamers was lost once in the ancestor of ... | 1987 | 3328814 |
| [fatty acid composition of the lipids of nutria tissues]. | | 1987 | 3439093 |
| comparison of the difco and patoc 1 slide antigens in the screening of leptospirosis. | a comparison of the patoc 1 slide agglutination (sat) and difco slide agglutination test for the screening of leptospirosis in man, cattle and coypu (myocastor coypus molina) is reported. the economic costs, convenience and availability of the antigens for the tests are analysed. it is recommended that slide agglutination methods alone are not sufficient for the routine diagnosis of leptospirosis. | 1987 | 3621886 |
| [the occurrence of bacterial infections in swamp beavers (myocastor coypus molina, 1782). 1. salmonella infections]. | | 1987 | 3632240 |
| [the occurrence of bacterial infections in swamp beavers (myocaster coypus molina, 1782). 2. erysipelothrix rhusiopathiae infections]. | | 1987 | 3632242 |
| the coypu as a rodent reservoir of leptospira infection in great britain. | the coypu (myocastor coypus molina) is an aquatic rodent that has become a widespread pest in the south-east of england. since the natural habitat of this animal is aquatic, the possibility of infection with leptospires was investigated. twenty-nine coypu were trapped and examined by serological, histological and cultural methods. of these, there was serological evidence of infection in seven coypus and leptospira interrogans var. wolffii was isolated from a further animal. this appears to be th ... | 1985 | 4067296 |
| [comparative analysis of spatial organization of myoglobins. ii. secondary structure]. | an analysis of probability of distribution curves of alpha-helical sites and bends of polypeptide chains of myoglobins in half-water mammals (beaver, nutria, muskrat, otter) carried out in comparison with those of myoglobins of the horse and sperm whale (x-ray diffraction analysis has revealed their tertiary structure) has revealed a coincidence of the secondary structure sites end bends of the chain in the studied respiratory hemoproteins of muscles. despite a considerable number of amino acid ... | 1992 | 1413113 |
| toxoplasmosis in coypu. | serological studies indicate that toxoplasmosis is a common infection in coypus now established in norfolk. a strain of toxoplasma gondii was isolated from an animal which had shown a high titre to the dye test for toxoplasma antibodies. this was similar to the many tissue cyst producing strains which are of low virulence for most of the small laboratory animals. congenital toxoplasmosis was proved in a litter born to one of the coypus during captivity. superinfection occurred when animals, prev ... | 1977 | 898639 |
| orthologous nature of mammalian insulin genes. | investigation of 17 insulin sequences from a bony fish, a bird, and 5 mammalian species showed that guinea pig and coypu insulin, that have a strongly divergent primary and quarternary structure, are not the result of gene duplication in an ancient vertebrate or invertebrate ancestor but they they diverged from the other mammals after divergence of the mammals from the other vertebrates. after this divergence both insulins underwent evolution at a highly increased rate. | 1977 | 894737 |
| [rabies in nutria (experimental studies)]. | | 1974 | 4466052 |
| [studies on the bacterial population of the gastrointestinal tract and on the fecal flora of the beaver (myocastor coypus)]. | | 1968 | 4884559 |
| [disinfection of objects infeted with the causative agent of colibacteriosis of nutria]. | | 1967 | 4898243 |
| failure of guinea pig antibody to beef insulin to neutralize coypu (nutria) insulin. | | 1968 | 4952862 |
| effect of thyrotropin (tsh)-releasing factor (trf) on plasma tsh levels in nutria (myocastor coypus). | | 1969 | 4976274 |
| coypu insulin. primary structure, conformation and biological properties of a hystricomorph rodent insulin. | insulin from a hystricomorph rodent, coypu (myocaster coypus), was isolated and purified to near homogeneity. like the other insulins that have been characterized in this suborder of rodentia, coypu insulin also exhibits a very low (3%) biological potency, relative to pig insulin, on lipogenesis in isolated rat fat-cells. the receptor-binding affinity is significantly higher (5-8%) in rat fat-cells, in rat liver plasma membranes and in pig liver cells, indicating that the efficacy of coypu insul ... | 1986 | 3541911 |
| a comparison of cardiac glutathione s-transferases from wild and domestic animals. | 1. cardiac glutathione s-transferases from wild animals; hyena, red fox, porcupine, coypu and mountain gazelle were purified and compared with the enzymes from domestic animals; cow, camel, goat and sheep. 2. by using 1-chloro-2,4-dinitrobenzene as a substrate, domestic hearts expressed higher glutathione conjugating activity than wild animals hearts. 3. in all the studied hearts, the bulk of the activity was associated with near neutral and acidic glutathione s-transferase isozymes with pi valu ... | 1990 | 2328567 |
| isolation and amino acid sequences of squirrel monkey (saimiri sciurea) insulin and glucagon. | it was reported two decades ago that insulin was not detectable in the glucose-stimulated state in saimiri sciurea, the new world squirrel monkey, by a radioimmunoassay system developed with guinea pig anti-pork insulin antibody and labeled pork insulin. with the same system, reasonable levels were observed in rhesus monkeys and chimpanzees. this suggested that new world monkeys, like the new world hystricomorph rodents such as the guinea pig and the coypu, might have insulins whose sequences di ... | 1990 | 2263627 |
| a fluorimetric study of the hydroxylation of biphenyl in vitro by liver preparations of various species. | 1. a study has been made of the enzymic hydroxylation of biphenyl by liver microsomal preparations from 11 species of animals, by using a fluorescence method for the micro-estimation of the hydroxylation products, 2- and 4-hydroxybiphenyl. 2. livers from all species examined produced 4-hydroxybiphenyl, but only those from mice, hamsters, cats, coypus and frogs produced 2-hydroxybiphenyl as well. 3. adult rat and rabbit livers produced only the 4-isomer, but livers from the young of these species ... | 1965 | 5862425 |
| pregnancy-blocking progesterone antibody targets specifically the uterus through its progesterone-binding sites. | passive immunization with a mouse monoclonal antibody against progesterone, designated db3, blocks pregnancy in several species. we have previously reported that db3 localizes in the mouse uterine epithelium shortly before normal implantation. this phenomenon is pregnancy dependent and specific for the progesterone antibody. in this study we demonstrate that db3 is present in the lumen of the uterus 36 h after an i.p. injection; this correlates with the time of maximum antibody reaction on the u ... | 1990 | 2198879 |
| coypus (myocastor coypus) as a new host of cryptosporidium parvum (apicomplexa: cryptosporidiidae). | | 1991 | 1916538 |
| comparison of fibre digestion and digesta retention time between nutrias (myocaster coypus) and guinea-pigs (cavia porcellus). | 1. digestibilities of feed, and transit and retention time of fluid and particle digesta marker measured in nutrias (myocaster coypus) and guinea-pigs (cavia porcellus) fed on a diet containing 50% alfalfa. 2. the digestibility of fibre was higher in the nutria, along with the longer retention time of digesta. 3. the liquid and particle marker were similarly excreted, suggesting no separation mechanism in the gastrointestinal tract of both the animals. 4. the apparent digestibility of protein in ... | 1992 | 1358513 |
| secondary poisoning associated with anticoagulant-killed nutria. | | 1967 | 6070307 |
| carbohydrate in pancreatic ribonucleases. | a survey of the presence and compositions of carbohydrate chains attached to pancreatic ribonucleases is given. carbohydrate chains may occur at asparagine residues in asn-x-ser/thr sequences at four exposed sites of the molecule (positions 21, 34, 62 and 76). these sites form part of highly variant sequences in pancreatic ribonucleases with the consequence that the enzymes from very closely related species may differ in the presence or absence of carbohydrate. in a number of ribonucleases asn-x ... | 1976 | 1261555 |
| [leptospira carrier state among nutrias (myocastor coypus moll)]. | | 1966 | 4240244 |
| insulin receptors in the mammalian central nervous system: binding characteristics and subunit structure. | insulin receptors in rat and human central nervous system have been identified by binding of 125i-insulin on purified synaptic plasma membranes; affinity labelling of receptors by chemical cross-linking 125i-insulin; or phosphorylation of receptors with [gamma-32p]atp. brain insulin receptors showed significant differences in their binding characteristics and subunit structure when compared with receptors in other tissues like adipose and liver cells: absence of negatively cooperative interactio ... | 1985 | 3907719 |
| [diseases of nutria and their therapeutic potential]. | the article reports important diseases and different farming techniques of nutria. e. coli and salmonella infections are the most important bacterial diseases. coccidiosis and strongyloidosis are frequently observed in nutria farms. differentiated prophylactic treatment and hygiene are necessary for optimal breeding conditions. | 1985 | 3895571 |
| comparison of lectin-staining pattern in testis and epididymis of gerbil, guinea pig, mouse, and nutria. | the testis and epididymis of gerbil, guinea pig, nutria, and mouse were studied after staining with seven rhodamine-conjugated lectins to disclose the distribution of glycoproteins with different sugar residues. in the testis, the lectins showed a variable affinity for leydig cells, tubular basement membrane, cytoplasm, acrosome, and plasma membrane of maturing spermatids as well as for sertoli cell extensions. during acrosomal development, the staining pattern showed characteristic changes with ... | 1986 | 3717048 |
| isolation of leptospires from a one week dead coypu (myocastor coypus molina). | the isolation of l. interrogans from a one week dead coypu is reported. the isolate was identified as a pathogenic strain of leptospira belonging to the icterohaemorrhagiae serogroup. | 1986 | 3557835 |
| [experimental testing of a rodenticidal preparation, pyriminyl (vacor), in small animals]. | the toxicity of the rodenticidal product pyriminyl (vacor) was tested in 4 dogs, 9 cats, 11 coypus and 16 ducks. in the tested dogs the 1000mg dose per kg l. w. was lethal only in 17% of cases. the results demonstrate that the ld50 for the dog is higher than stated in the literature (1000 mg/kg l. w.). dogs show a high variability in their sensitivity to the product, since some of them died at lower doses. it can be assumed that 1 to 2% field bait will not induce any lethal intoxication in dogs. ... | 1980 | 6775411 |
| cardiovascular responses of anesthetized nutria and cats during apnea. | | 1971 | 5555794 |
| [intestinal arginase in the phylogenetic development of animals]. | the activity of intestinal arginase was studied in 31 species belonging to the types annelides, arthropoda and chordata. large variations of the enzyme activity were tested. the differences were of 2 orders of magnitude--100 times. four groups were selected: animals with very low arginase activity up to 0.20 microm of ornithine/mg of protein/15 min; this group comprises both phylogenetically lower and higher animals (cockroach, locust, frog, duck, domestic hen, broiler chicken, horse, hyppopotam ... | 1987 | 3452799 |
| regional differences in hindgut structure and function in the nutria, myocastor coypus. | morphologically the large intestine of the nutria resembles that of other caviomorphs, notably the guinea pig. the cecum is voluminous: it contributes 8.6% of the total intestinal length and 12.7% of the total intestinal surface area (considering the surface enlargement factor). it contains 27-32% of the wet ingesta and 20-23% of the dry matter in the gastrointestinal tract. in the colon the corresponding figures are: 21.8% of length, 12.6% of surface area, 16-21% of wet ingesta, and 16-40% of d ... | 1988 | 3383220 |
| the selection-arena hypothesis. | the selection arena hypothesis offers one answer to a puzzling question. why do some organisms produce many more fertilized zygotes than are actually reared to hatching, birth, or release-then neglect, discard, resorb, or eat some of them, or allow them to eat each other? it makes four assumptions: (1) zygotes are cheap; (2) after conception the investment of parental time, energy, or risk into offspring continues; (3) offspring vary in fitness; (4) variation in offspring fitness can be identifi ... | 1987 | 2961604 |
| protein nutrition in the alligator. | 1. fourteen different protein-containing diets were fed to small alligators. their rates of digestion and their nutritional values were determined by following changes in free amino acids in the plasma. 2. fish, chicken and nutria were digested rapidly and all their component essential amino acids disappeared quickly and at the same rate. when given in the dry, fat-free form the amino acids were released and assimilated about 50% faster than when fat was included. 3. none of the isolated protein ... | 1987 | 2886283 |
| epizootic pneumonia in nutria. | this report highlights current knowledge regarding the aetiology, diagnosis and management of nutria (myocastor coypus molina 1792) with spontaneous infectious pneumonia. bacteriological evidence supports the view that streptococcus zooepidemicus could be the specific pathogen, although other bacteria were also isolated. attempts at virus isolation were unsuccessful. pneumonia has rapidly become established as one of the major, life-threatening bacterial diseases, ranking in importance with gast ... | 1994 | 7740854 |
| [echinococcus multilocularis in a swamp beaver (myocaster coypus)]. | larval echinococcus multilocularis was found in a nutria (myocastor coypus) on a fur farm situated south of the thuringian forest near the border the federal republic of germany. this finding is of epidemiological importance. investigations of 67 red foxes (vulpes vulpes) originating from this area and the whole erfurt region (thuringia) did not reveal the presence of adult e. multilocularis. | 1989 | 2817506 |
| survey for selected diseases in nutria (myocastor coypus) from louisiana. | thirty-two trapper-caught nutria (myocastor coypus) from east baton rouge, iberville, tangipahoa, and st. helena parishes in louisiana (usa) were sampled for several disease agents. antibodies against toxoplasma gondii, chlamydia psittaci, francisella tularensis, leptospira spp., and encephalomyocarditis virus were detected in 7%, 14%, 0%, 7%, and 0% of nutria, respectively. both animals seropositive for leptospirae were positive for l. interrogans serovar canicola. no salmonella spp. were isola ... | 1994 | 7933295 |
| structure-function relationships in naturally occurring mutants of pancreatic lipase. | from primary structure comparison, the pancreatic lipase family is now divided into three subgroups: classical pancreatic lipases, pancreatic lipase-related proteins 1 (rpi) and pancreatic lipase-related proteins 2 (rp2). among the rp2 subfamily, the guinea-pig and coypu enzymes share kinetic properties which differ from those of classical pancreatic lipases. both enzymes display a high phospholipase activity and are not interfacially activated using a short chain triglyceride as substrate. thei ... | 1994 | 8029213 |
| evidence for a pancreatic lipase subfamily with new kinetic properties. | several new members of the pancreatic lipase family have been reported recently, and amino acid sequence comparison reveals that this family can now be divided into three subgroups: (1) "classical" pancreatic lipases, (2) related proteins 1 (rp1), and (3) related proteins 2 (rp2) (giller, t., et al. (1992) j. biol. chem. 267(23), 16509-16516). whereas "classical" pancreatic lipases are well characterized with respect to kinetic properties, i.e., interfacial activation and dependence on colipase ... | 1994 | 8130186 |
| serological evidence of coxiella burnetii infection in wild animals in japan. | one hundred and thirty-four (26%) of 511 sera from 11 wild animal species in eight prefectures in japan had antibody titers to coxiella burnetii by the enzyme-linked immunosorbent assay. high prevalences were observed in japanese black bears (ursus thibetanus) (78%), hokkaido deer (cervus nippon yesoensis) (69%), japanese hares (lepus brachyurus) (63%), japanese deer (cervus nippon centralis) (56%), and to some extent in japanese monkeys (macaca fuscata) (28%). a low prevalence (13%) was observe ... | 1993 | 8355353 |
| properties and type antigen patterns of group b streptococcal isolates from pigs and nutrias. | all 59 group b streptococcal cultures isolated from pigs and nutrias reacted with group b-specific antiserum and gave a positive camp reaction in the zone of staphylococcal beta-lysin. most of the cultures were pigmented; all cultures hydrolyzed na hippurate and utilized salicin, maltose, and saccharose but not esculin, mannitol, or inulin. fifty-three percent of the group b streptococci from pigs and none of those from nutrias were lactose positive. serotyping revealed that most of the group b ... | 1993 | 8458981 |
| innervation pattern in jaw muscles of various mammalian chewing types. | the intramuscular nerve branches of the masticatory muscles were investigated in different mammalian species such as canis familiaris, capreolus capreolus, capra hircus africans, bos primigenius forma taurus, myocastor coypus molina 1782, sus scrofa domestica, pan troglodytes, homo sapiens. the ramifications of the nerves form a specific pattern that is adapted to the specialised muscle structures in all mammalian chewing type. the innervation pattern is fully consistent with the infrastructures ... | 1989 | 2816526 |
| [the anticomplementary effect of animal sera--a contribution to the precise definition of the complement-binding reaction]. | photometric procedures (standardised complement fixation reaction) were used to determine the anticomplementary action of animal sera. multiplication factors, k, of 3.0 to 5.0, related to human sera, were recorded and were found to be capable of reducing or offsetting anticomplementary serum action in cfr in terms of a definitive complement excess. anticomplementary action of animal sera, for all practical purposes, does no longer apply to dilution ratios of 1:16. the complement excess necessary ... | 1989 | 2774807 |
| evolution of b2 repeats: the muroid explosion. | b2 repeats are a group of short interspersed elements (sines) specific for rodent genomes. copy numbers were determined for different rodent genera. all the muroid (rat, mouse, deer mouse, hamster, gerbil) rodent genomes analyzed exhibited 80,000-100,000 copies per haploid genome, whereas the squirrel genome contains only 2,500 copies, and fewer than 100 (if any) copies were observed for the hystricognath rodents (guinea pig and nutria). these findings demonstrate that there was an 'explosion' o ... | 1997 | 9226433 |
| [the prevalence of cryptosporidia among agricultural animals in azerbaijan]. | in the paper are presented the data on revealement of cryptosporidian oocysts (apicomplexa, sporozoa) in feces of cattle, swine and sheep of different ages and results of the experimental infection of laboratory animals (rats, mice, rabbits, coypus) with the oocysts detected as well. the latters were attributed to cryptosporidium parvum species. the analysis of the size characteristic in the isolates of naturally and artificially infected hosts has shown that the oocysts dimensions might vary bo ... | 1996 | 9480451 |
| [amino acid sequence of ondatra myoglobin (ondatra zibethica). characteristic features of myoglobins from semiaquatic animals]. | based on the amino acid composition of globin, amino acid analysis and n-terminal sequencing of peptides as well as a comparative analysis of the primary structure of beaver, coypu rat and otter myoglobins with the use of the fingerprinting technique, the amino acid sequence of the major component of ondatra myoglobin including 153 amino acid residues was reconstructed. the results of a comparative analysis of the primary structure of myoglobin and the peculiarities of the functional morphology ... | 1989 | 2675985 |
| [microbiological diagnosis of microorganisms tentatively designated as "sp organisms"]. | the authors describe the biochemical characteristics of two strains described as "sp organism". this microorganism incertae sedis resembles from the biochemical aspect (oxidase+, mannite-, dextrose+ with gas) the species pasteurella aerogenes; contrary to the latter it does not break down urea and differs also as regards the morphology of colonies, which on blood agar are coarser; it also has a higher content of g + c in dna than pasteurella. it is a pathogen of rodents. the authors describe two ... | 1989 | 2632012 |
| some features of the basal rhinencephalic structures in the copypu rat, myocastor coypus. | | 1968 | 5715607 |
| foot-and-mouth disease in myocastor coypus. | | 1967 | 4291914 |
| [effect of several preparations on the immunologic reactivity of nutrias]. | | 1976 | 1023484 |
| a spectrofluorimetric study of the 7-hydroxylation of coumarin by liver microsomes. | 1. the fluorescence characteristics of 3- and 7-hydroxycoumarin, and 7-hydroxy-and 7-methoxy-4-methylcoumarin, have been determined. 7-hydroxycoumarin shows excited-state ionization from ph1 to 9. 2. a sensitive and specific fluorimetric method for the determination of 7-hydroxycoumarin (umbelliferone), and its application to liver homogenates and other tissue preparations, are described. 3. the enzymic hydroxylation of coumarin to 7-hydroxycoumarin has been studied by this method and the optimu ... | 1965 | 4378707 |
| [pathogenesis of pasteurellosis in nutria]. | | 1970 | 5508827 |
| progesterone-binding proteins in plasma of guinea-pigs and other hystricomorph rodents. | progesterone-binding plasma proteins (pbpp, progesterone-binding globulin, pbg, and corticosteroid binding globulin, cbg) have been measured in plasma of guinea-pigs, casiragua, cuis, degu and plains viscacha. during pregnancy pbpp increased to reach peak values between days 20-25 and days 50-term in guinea-pigs, immediately before parturition in casiragua, and in mid-gestation in cuis, degu and viscacha. the pattern of pbpp concentration during pregnancy was similar to that of plasma progestero ... | 1981 | 6170753 |
| sharing of biological effect and receptors between guinea pig insulin and platelet-derived growth factor. | insulins from the hystricomorphs (guinea pig, porcupine, coypu, and casiragua) at high concentration stimulate dna synthesis in human fibroblasts to a greater level than other mammalian insulins or insulin-like growth factors (igfs). 125i-labeled guinea pig insulin binds to a specific receptor and this binding is competed for by hystricomorph insulins but not by porcine insulin or igfs. fetal bovine serum also inhibits the binding of 125i-labeled guinea pig insulin and is more potent than fetal ... | 1983 | 6298787 |
| dogfish insulin. primary structure, conformation and biological properties of an elasmobranchial insulin. | insulin from an elasmobranch, the spiny dogfish (squalus acanthias) has been purified to near homogeneity by means of acid-ethanol extraction and salt precipitation. the amino acid sequences of the performic-acid-oxidised a and b chains have been determined and exhibit some unusual features. the a chain contains a total of 22 amino acids; only the insulin from coypu (a member of the rodentia suborder, hystricomorpha), has previously been reported to contain an extension past the a21 asparagine. ... | 1983 | 6352261 |
| respiratory and cardiovascular control during diving in birds and mammals. | recent studies on freely diving birds and mammals indicate that, contrary to the classical hypothesis, the majority of dives are aerobic with minimal cardiovascular adjustments (i.e. bradycardia and selective vasoconstriction). it is postulated that during these aerobic dives the cardiovascular adjustments result from the opposing influences of exercise and the classical diving response, with the bias towards the exercise response. it is envisaged that the active muscles, as well as the brain an ... | 1982 | 6757368 |
| role of the coypu (myocastor coypus) in the epidemiology of leptospirosis in domestic animals and humans in france. | the coypu (myocastor coypus), a rodent whose natural habitat is stagnant freshwater, has become a widespread pest in france within the last decade. this study investigated the prevalence of seropositivity and the renal carriage of leptospires in coypus in order to evaluate their role in terms of the risk of infection by leptospira interrogans in domestic animals and humans. the study involved the application of serological and bacteriological methods to identify leptospires infection and/or carr ... | 2001 | 11599683 |
| [cerebral nematode infection in nutria (myocastor coypus)--caused by larvae of baylisascaris (nematoda)]. | | 1981 | 7195198 |
| characteristics of the larval echinococcus vogeli rausch and bernstein, 1972 in the natural intermediate host, the paca, cuniculus paca l. (rodentia: dasyproctidae). | in colombia, the natural intermediate host of echinococcus vogeli rausch and bernstein, 1972 is the paca, cuniculus paca l. (rodentia: dasyproctidae). the larval cestode develops in the liver of the host, where it usually is situated superficially, partly exposed beneath glisson's capsule. the infective larva consists of a subspherical to asymmetrical, fluid-filled vesicle, up to 30 mm in diameter, enclosed by a thick laminated membrane. it typically contains numerous chambers, often interconnec ... | 1981 | 7283003 |
| health status of a population of nutria (myocastor coypus) living in a protected area in italy. | ninety trapped nutria (myocastor coypus) from a protected area of piedmont (italy), including the po river, were examined for the prevalence for lesions in major viscera, selected serum antibodies and enteric bacteria. coccidial lesions in the liver included cholangitis, calcification and necrosis. renal lesions were nonsuppurative interstitial nephritis and a single case of renal adenocarcinoma. the lungs had a 41.1% prevalence of nonsuppurative interstitial pneumonia. ten of 87 sera (11.5%) ha ... | 2003 | 12801459 |
| [shigella shiga infection in a coypu farm]. | | 1952 | 13004781 |
| [an outbreak of salmonellosis caused by s. typhimurium in a nutria farm]. | | 1955 | 13288913 |
| [isolation of yersinia enterocolitica in the nutria myocastor coypy (kerr) in camargue]. | | 1980 | 7418122 |
| [the use in ophthalmology of a suture material from animal tendons (rats and nutrias)]. | | 1964 | 14256476 |
| specific interactions of progestins and anti-progestins with progesterone antibodies, plasma binding proteins and the human recombinant receptor. | this structure-activity study compares the affinity of a series of progestins, progesterone metabolites and anti-progestins for a panel of monoclonal antibodies to progesterone, coypu (myocastor coypus) or guinea pig plasma progesterone-binding proteins (ppbps) and the human recombinant progesterone receptor a form (pr-a). the compounds tested were progesterone, promegestone (r5020), mifepristone (ru486), zk98,734, onapristone (zk98,299), 11 alpha-hydroxyprogesterone, 11 alpha-progesterone hemis ... | 1995 | 7632616 |
| a standardised restriction fragment length polymorphism (rflp) method for typing mycobacterium avium isolates links is901 with virulence for birds. | a standardised method for pvuii-psti-is901 restriction fragment length polymorphism (rflp) typing was developed and evaluated against 173 isolates of mycobacterium avium subsp. avium and m. avium subsp. silvaticum originating from birds (n=46) and their aviaries (n=5), pigs (n=85), cattle (n=18), reference serotype strains (n=9), humans (n=7), a horse (n=1), a nutria (n=1), and strain m. avium subsp. avium st 18 (formerly m. avium subsp. paratuberculosis st 18). pvuii-is1245 rflp typing was also ... | 2003 | 14499991 |
| distribution of genes conferring combined resistance to tetracycline and minocycline among group b streptococcal isolates from humans and various animals. | forty-nine tetracycline and minocycline resistant streptococci of serological group b isolated from humans, cattle, pigs and nutrias were investigated for the presence of genes conferring this combined resistance. southern blot hybridization of ecori-digested chromosomal dna of the bacteria revealed for 39 of the cultures a hybridization signal with tet(m), for four of the cultures a hybridization signal with tet(o) and for none of the cultures a hybridization signal with the tet(q) gene probe. ... | 1994 | 7727901 |
| cloning and expression in insect cells of two pancreatic lipases and a procolipase from myocastor coypus. | the physiological role of pancreatic lipases has traditionally been assigned solely to triacylglyceride metabolism, while the digestion of phospholipids requires the presence of the pancreatic phospholipase a2, a 14-kda enzyme unrelated to pancreatic lipases. however, in the guinea pig, it was observed that the pancreatic phospholipase a2 was absent and that a guinea pig pancreatic-lipase-related protein 2 (gpl-rp2) was responsible for phospholipase activity, in contrast to the situation observe ... | 1995 | 7851384 |
| sporadic amplification of id elements in rodents. | id sequences are members of a short interspersed element (sine) repetitive dna family within the rodent genome. the copy number of individual id elements varies by up to three orders of magnitude between species. this amplification has been highly sporadic in the order rodentia and does not follow any phylogenetic trend. using library screening and dot-blot analysis, we estimate there are 25,000 copies of id elements in the deer mouse, 1,500 copies in the gerbil (both cricetid rodents), and 60,0 ... | 1996 | 8576967 |
| dermatitis in a human volunteer infected with strongyloides of nutria and raccoon. | | 1965 | 5891452 |
| common diseases of fur bearing animals. ii. diseases of chinchillas, nutria, and rabbits. | | 1966 | 5948791 |
| an outbreak of leptospirosis in seals (phoca vitulina) in captivity. | an outbreak of leptospirosis in seals (phoca vitulina) in captivity is described. in a zoo in the netherlands 5 adult seals died within 12 days. at necropsy all animals showed signs of acute septicaemia, consistent with acute leptospirosis. serological examination of one animal was positive for antibodies against leptospira interrogans serovar icterohaemorrhagiae and the serologically closely related serovar copenhageni. polymerase chain reaction was positive in one other animal. 8 nutria (myoca ... | 2006 | 16605159 |
| the isolation of a streptococcus, lancefield's group d, from nutria. | | 1959 | 17649131 |
| respiratory functions of the blood of the nutria and the woodchuck. | | 1966 | 5968933 |
| adaptations to hypercapnic conditions in the nutria (myocastor coypus)--in vivo and in vitro co2 titration curves. | arterial blood acid-base status of unanesthetized, unrestrained nutria was studied during exposure to 5, 10 and 14.5% co2 for 6 hr. control values, ph = 7.426 +/- 0.037, paco2 = 36.5 +/- 3.1 mmhg and [hco-3] = 24.3 +/- 2.5 mm/1 (n = 24), are within the normal range reported for other mammals. values after 6 hr of exposure to 10% co2 were: ph = 7.355 +/- 0.043, paco2 = 71.0 +/- 3.6 mmhg and [hco-3] = 38.0 +/- 4.1 mm/l (n = 5). arterial blood buffer slopes, obtained from the in vitro titration cur ... | 1983 | 6137314 |
| insulin receptors in rat brain cortex. kinetic evidence for a receptor subtype in the central nervous system. | binding kinetics of porcine 125i-insulin were studied in synaptosomal and microsomal fractions of rat brain cortex. receptor binding was temperature- and ph-dependent with optimum at 4 degrees c and ph 8.0-8.3. at 15 degrees c, steady state binding was heterogenous, and scatchard analysis revealed two classes of receptors with kd of 2 nmol/l and 40 nmol/l in amounts of 50 pmol/g and 200 pmol/g of membrane protein. dissociation kinetics were biexponential with t1/2 of about 5 min and 180 min, and ... | 1984 | 6150469 |
| sarcoma of the tibia in a coypu rat (myocastor coypus). | | 1948 | 18876553 |
| [rapid determination of sex in myocastor coypus embryos in the first stage of gestation]. | the early knowledge of the sex may be crucial for the understanding of many features of ecological and evolutive biology, including offspring sex-ratio adjustment and evolution of breeding systems. in coypu (myocastor coypus), significant variation in birth sex-ratios can be observed and selective abortion of entire litters is one of the cited mechanisms. in order to determine the sex of coypu embryos in the earlier stages of gestation (second week), we developed a molecular technique based on p ... | 2001 | 11386079 |
| susceptibility of nutria (myocastor coypus) to trichinella infection: biological aspects. | experimental infections with three different species of trichinella in nutria in order to evaluate the susceptibility and the role of these rodents in the spreading of parasitosis in nature were carried out. the nutria is present in many italian wet areas and its distribution is expanding. the nutria meat is utilized as food in different countries and is retained responsible for trichinellosis in man. two groups of ten animals were infected per os with 500 and 5,000 (n. 10) infective larvae of t ... | 2001 | 11484357 |
| myocastor coypus as a reservoir host of fasciola hepatica in france. | to clarify the role of the nutria myocastor coypus in the epidemiology of domestic fasciolosis in loire-atlantique (department of western france), 438 nutrias were trapped in 9 humid areas of the department and 304 nutrias were trapped in 3 farms where fasciola hepatica was present; all animals were necropsied. liver flukes were found in 160 nutrias: 38 nutrias randomly taken in the department (8.7%) and 122 trapped in fasciolosis areas (40.1%). the average parasitic burden was 5.7 flukes per nu ... | 2001 | 11592619 |
| fasciola hepatica: the characteristics of experimental infections in lymnaea truncatula subjected to miracidia differing in their mammalian origin. | experimental infections of lymaea truncatula, using two susceptible snail populations (berneuil, or migné, central france) and four isolates of fasciola hepatica miracidia differing in their mammalian host of origin (cattle, nutrias, rabbits, or sheep), were performed under laboratory conditions to determine whether the host of origin had an effect on the daily production of cercariae. snails were each subjected to bimiracidial exposures and were then reared under semi-natural conditions (a cons ... | 2001 | 11728021 |
| effect of gh and igf-i treatment on reproduction, growth, and plasma hormone concentrations in domestic nutria (myocastor coypus). | the role of gh and igf-i in the control of reproduction, growth, and hormone secretion in domestic nutria was examined. in the first series of experiments, we studied the effects of single and multiple (daily for 20 days) injections of recombinant hgh (15 microg/animal) on plasma triiodothyronine (t3), thyroxine (t4), and progesterone (p) concentrations, as well as on the duration of pregnancy (time between start of mating and birth of pups), number of pups born, and body weight of adult females ... | 2003 | 12714012 |
| hosts, distribution and genetic divergence (16s rdna) of amblyomma dubitatum (acari: ixodidae). | we supply information about hosts and distribution of amblyomma dubitatum. in addition, we carry out an analysis of genetic divergence among specimens of a. dubitatum from different localities and with respect to other neotropical amblyomma species, using sequences of 16s rdna gene. although specimens of a. dubitatum were collected on several mammal species as cattle horse, tapirus terrestris, mazama gouazoubira, tayassu pecari, sus scrofa, cerdocyon thous, myocastor coypus, allouata caraya, glo ... | 2010 | 20084537 |
| trichinella infection in wild animals from endemic regions of argentina. | natural infection with trichinella has been described in more than 150 mammalian species. however, few reports of trichinella infection in wild animals have come from argentina. in this study, muscle tissue was obtained from wild animals in argentina with the aim of evaluating the presence of trichinella. a total of 169 muscle samples were collected to determine the presence of trichinella larvae by artificial digestion. the 169 muscle samples originated from 12 species including 36 opossums (di ... | 2010 | 20424859 |
| a survey of the pyramidal system in the coypu rat, myocastor coypus. | | 1963 | 14064094 |
| leptospira paidjan (bataviae serogroup) isolated from nutria in louisiana. | | 1962 | 14494369 |
| fasciola hepatica: the growth and larval productivity of redial generations in galba truncatula subjected to miracidia differing in their mammalian origin. | experimental infections of galba truncatula with 4 isolates of fasciola hepatica miracidia differing by their mammalian origin (cattle, nutrias, rabbits, or sheep) were carried out to determine if parasite origin had an effect on the number of free rediae, their growth, and their larval productivity in each redia category. the mammalian origin of miracidia had a significant influence on the numbers of free rediae (they were higher in cattle-group snails) and the lengths of rediae (they were lowe ... | 2004 | 15165078 |
| hepatic billrubin-ix-alpha-glycosyltransferase activities in animals excreting primarily biliverdin into bile. | a wide variation was observed in hepatic bilirubin-ix-alpha uridine diphosphate (udp) glucuronyl, glucosyl and xylosyl transferase activities among yellow rat snakes, pin fish, chickens, turkeys, sea turtles, alligators, nutria and rats. lower hepatic enzyme activities were observed in fish, snakes, turtles, and avian species with intermediate enzyme activities present in the livers of nutria and alligators. hepatic glycosyltransferase activities were greater in the biliverdin-excreting species ... | 1981 | 15311383 |
| leptospirosis in free-ranging endangered european mink (mustela lutreola) and other small carnivores (mustelidae, viverridae) from southwestern france. | to study the possible role of disease in the decline of endangered european mink (mustela lutreola), we conducted a survey of antibody prevalence and renal carriage of pathogenic leptospira (leptospira interrogans sensu lato) using serum and kidney samples collected from 1990 to 2007 from several free-ranging small carnivores and farmed american mink (mustela vison) in southwestern france. an indirect microscopic agglutination test using a panel of 16 serovars belonging to 6 serogroups (australi ... | 2010 | 20966265 |
| a comparative histological study on the distribution of striated and smooth muscles and glands in the esophagus of wild birds and mammals. | musculature and glands of the esophagus in various wild birds and mammals were examined histologically. cervical and thoracic esophagi of all birds used (mallard, spot-billed duck, ural owl and hodgson's hawk-eagle) were comprised of smooth muscle fibers only. in contrast, esophagi of the nutria, japanese raccoon dog, common raccoon and japanese marten consisted largely of striated muscle fibers. in the masked palm civet, japanese macaque and bottlenose dolphin, esophageal muscle layers consiste ... | 2005 | 15699607 |
| rat gp-3 is a pancreatic lipase with kinetic properties that differ from colipase-dependent pancreatic lipase. | the pancreas contains three homologous proteins, colipase-dependent pancreatic lipase (pl) and two recently described pancreatic lipase-related proteins, plrp1 and plrp2. rat (r) plrp2 was first identified as a zymogen granule membrane protein, gp-3. subsequently, we showed that rplrp2 could cleave fatty acids from triglycerides, but the kinetic properties of rplrp2 have not been further investigated. to further characterize rplrp2, we expressed the recombinant enzyme in a baculovirus system, pu ... | 1995 | 8656075 |