| studies on the integument of cestodes. ii. the nature of protein component in the integument of gravid proglottides of taenia hydatigena. | the main cuticle of the gravid proglottides shows differences in their chemical make up, in that there is a transformation of sh groups into -s-s bonding resulting in the refractivity of the cuticle. another feature is the coexistence of dityrosine linkages with -s-s bondings. the mode of dityrosine formation from tyrosine residues is found to be possible by the presence of a peroxidase enzyme system in the cuticle. the evolutionary and physiological significance of the occurrence of -s-s bondin ... | 1975 | 52987 |
| comparative antigenic characterisation of echinococcus granulosus and taenia hydatigena cyst fluids by immunoelectrophoresis. | hydatid cyst fluid from echinococcus granulosus (hcf) and cyst fluid from taenia hydatigena (tcf) cysts were compared in reciprocal immunoelectrophoresis (iep) tests using homologous and heterologous antisera which were free of antibodies to host serum contaminants. the antigens for the e granulosus arc 5 were demonstrated in tcf. antibody activity to these and other antigens common to hcf and tcf was removed from homologous antisera by absorptions with the heterologous antigenic preparation. an ... | 1977 | 73210 |
| studies on the integument of cestodes. v. histochemical observations on the integument of the neck region of taenia hydatigena. | | 1975 | 127499 |
| studies on the integument of cestodes. vi. histochemical studies on the fate of structural polysaccharide in the integument of gravid proglottides of taenia hydatigena. | histochemical study of the structural polysaccharide in the integument of gravid proglottides revealed that the main cuticle is only feebly positive to pas reaction when compared with that of other regions of the cestode body. the significance of such change in the pas reaction has been discussed. it was observed that there is no change in the acid mucopolysaccharide of the outer layer of the integument. | 1975 | 128974 |
| cysticercus tenuicollis (taenia hydatigena) in the urinary bladder of a sheep. | | 1978 | 250339 |
| the effect of mebendazole and praziquantel on the cysts of echinococcus granulosus, taenia hydatigena and t. ovis in sheep. | | 1978 | 276754 |
| echinococcus granulosus, taenia hydatigena, t. ovis: evaluation of cyst fluids as antigen for serodiagnosis of larval cestodes in sheep. | | 1978 | 281662 |
| an epidemiological analysis of factors influencing the increase in taenia ovis prevalence during the new zealand echinococcus granulosus control program. | there was an 8-fold increase in the national prevalence of taenia ovis in dogs during the first decade of the new zealand hydatid disease control program. the temporal patterns in the prevalence of t. ovis were similar in both rural working dogs and urban pet dogs, with the highest prevalence found in the sheep farming areas. the dramatic increase in the prevalence of t. ovis was a reflection of the change in source of food for many working dogs, from the traditional raw viscera to carcase meat ... | 1977 | 303900 |
| the styx field trial: effect of treatment of the definitive host for tapeworms on larval forms in the intermediate host. | a 13-year assessment has been made of the effectiveness of a monthly drug treatment programme for the control of tapeworms in dogs in order to prevent hydatidosis (echinococcus granulosus) and cysticercosis (taenia hydatigena and t. ovis) in sheep. the age-specific prevalence of t. hydatigena in lambs was used as the principal indicator. the trial was carried out in the styx valley of the maniototo plain in the south island of new zealand.over an 8-year period dogs were treated monthly with buna ... | 1978 | 308408 |
| attempts to immunise rats and mice against infection with fasciola hepatica using antigens prepared from taenia hydatigena. | attempts were made to immunise rats and mice against infection with f. hepatica by oral dosing with t. hydatigena eggs, or by vaccination with various t. hydatigena antigen preparations. these antigens included extracts from t. hydatigena cysticerci and cyst fluid, and antigens collected during short-term (48 h) and long-term (14 days) in vitro cultivation of larvae. immunity was assessed by the numbers of f. hepatica recovered from the challenge infection in rats, and the mortality rates of inf ... | 1979 | 433385 |
| a survey of gastro intestinal helminth parasites of stray dogs in zaria, nigeria. | a survey of helminth parasites in stray dogs was carried out in the zaria area. out of 180 dogs examined 65.6 per cent (118/180) were found positive for ancylostoma caninum, while toxocara canis and trichuris vulpis were detected in 41.1 per cent (74/180) and 13.9 per cent (25/180) respectively. other helminth parasites found taenia ovis 35 per cent (63/180) taenia hydatigena 67.8 per cent (122/180), echinococcus granulosus 0.006 per cent (1/180) and dipylidium caninum 97.8 per cent (176/180). | 1979 | 452351 |
| helminths recovered from black bears in the peace river region of northwestern alberta. | a total of 91 free-ranging black bears (ursus americanus) from the peace river region of northwestern alberta was examined for helminths. four species, baylisascaris transfuga, taenia krabbei, taenia hydatigena and dirofilaria ursi, were found. none of the bears was heavily infected. results are compared with other similar north american surveys. | 1979 | 459048 |
| taenia hydatigena and taenia multiceps infections in snowdonia, u.k. i. farm dogs as definitive hosts. | | 1979 | 487053 |
| taenia hydatigena and taenia multiceps infections in snowdonia, u.k. ii. the role of hunting dogs and foxes as definitive hosts, and of sheep as intermediate hosts. | | 1979 | 487054 |
| the effect of oxfendazole on echinococcus granulosus and taenia hydatigena infections in dogs. | trials with oxfendazole carried out on 120 dogs infected with either echinococcus granulosus or taenia hydatigena indicated that a single treatment significantly reduced the proportion of dogs infected with tapeworms. diarrhoea occurred occasionally when the dose rate exceeded 20 mg/kg. | 1979 | 515529 |
| the effect of taenia hydatigena infection on existing and concurrent infections of fasciola hepatica in sheep. | sheep given a primary infection of fasciola hepatica were challenged 18 weeks later with taenia hydatigena or f hepatica, or both parasites together, or were not challenged. at the same time, control sheep were infected with t hydatigena and/or f hepatica separately or concurrently. all sheep were killed seven weeks after challenge and the number of cysts and flukes counted. challenge infection with t hydatigena did not affect the numbers of flukes recovered from either primary or challenge f he ... | 1979 | 515530 |
| cross-protection between the cysts of echinococcus granulosus, taenia hydatigena and t ovis in lambs. | lambs were infected orally at 14 weeks of age with either taenia hydatigena, t ovis or echinococcus granulosus eggs. to induce high levels of resistance to oral reinfection, they were then injected intramuscularly with eggs of the homologous species four weeks and eight weeks later. the degree of immunity was then tested by oral challenge with eggs from either the homologous or an heterologous species. autopsy results indicated that prior infection with an homologous species induced a very high ... | 1979 | 523807 |
| the effect of nitroscanate tablets of echinococcus granulosus and taenia hydatigena infections in dogs. | tablets of micronised nitroscanate (nominal particle size 2--3 microns) were given to a total of 190 dogs that had been experimentally infected with either echinococcus granulosus or taenia hydatigena. the efficiency of the drug in tablet form in freeing dogs from tapeworms, was investigated. the dose rate at which 50 per cent of normally fed dogs can be expected to be freed from e granulosus was found to be 89 mg/kg (95 per cent confidence limits 55 mg/kg to 140 mg/kg). the 90 per cent effectiv ... | 1979 | 523820 |
| 'arc 5' antibodies in sera of sheep infected with echinococcus granulosus, taenia hydatigena and taenia ovis. | the 'arc 5' precipitin band, formed when test human serum is reacted against immunoelectophoresed hydatid cyst fluid antigen, has provided a positive diagnosis of echinococcus granulosus infection. these antibodies to 'arc 5' antigen have now been found in the sera of sheep. they appear 2 weeks after infection with taenia ovis, after 3 weeks with t. hydatigena and after 16 weeks with e. granulosus. an antigen similar to the 'arc 5' antigen of e. granulosus cyst fluid was also demonstrated in cys ... | 1979 | 551375 |
| the efficacy of praziquantel against cestodes in cats, dogs and sheep. | praziquantel is a new type of acylated isoquinoline-pyrazine. a single, low oral or subcutaneous dose of the compound is reliably effective against all tested juvenile and adult cestodes in cats, dogs and sheep. praziquantel is the first cestodicide which is also effective on bile duct cestodes. in cats and dogs, 5 mg praziquantel per kg is completely effective on all stages of taenia hydatigena, t pisiformis, t ovis, t taeniaeformis, dipylidium caninum, mesocestoides corti, echinococcus multilo ... | 1978 | 564542 |
| factors regulating tapeworm populations: dispersion patterns of taenia hydatigena eggs on pasture. | two grazing trials using 'sentinel' lambs were undertaken to measure changes in the availability of eggs within 30 metres of deposition by dogs infected with taenia hydatigena. in the first trial the experimental pasture was divided into nine equal plots; in the second trial, each of the nine plots was divided into sub-plots. in each trial, infected dogs were placed on the pasture for 10 days. lambs were then grazed for 10 days immediately, 36 days and 56 days after the dogs had been removed. ch ... | 1978 | 566948 |
| gastro-intestinal helminths of domestic dogs in the republic of south africa. | of the gastro-intestinal helminths found in 1 063 dogs from different parts of the country, dipylidium caninum, the most prevalent cestode, occurred in 19,7% of the animals. echinococcus granulosus was present in 10 dogs, 8 of which were from urban areas, and taenia hydatigena in 69 dogs. taemia multiceps was recovered from dogs only in the cape province and the orange free state. toxocara canis was present in 81 of the necropsies carried out on 253 dogs from the pretoria municipal area, while a ... | 1979 | 575920 |
| the lethal effect of some benzimidazoles on taenia hydatigena in dogs. | the lethal effect of some benzimidazoles on taenia hydatigena infections in dogs have been compared. fenbendazole, parbendazole and oxibendazole were more effective than cambendazole and thiabendazole, while coarsely ground mebendazole did not differ significantly from any of them. | 1977 | 578582 |
| immunoelectrophoresis tests showing echinococcus granulosus arc 5 in human cases of echinococcus vogeli and cysticercosis-multiple myeloma. | human sera from one case of polycystic hydatidosis due to echnincoccus vogeli and from a case of cysticercosis and multiple myeloma were positive to the immunoelectrophoresis (iep) test for hydatidosis based on the e. granulosus arc 5 positivity criterion. arc 5 can therefore be elicited in iep tests of human sera not only by e. granulosus and e. multilocularis but also by e. vogeli antigens. whether the cross reaction observed in the second serum was due to the multiple myeloma or to the cystic ... | 1978 | 677368 |
| the effect of mebendazole in food on echinococcus granulosus and taenia hydatigena infections in dogs. | a limited, but controlled trial with mebendazole incorporated in a prepared food and with tablets given with this food showed that with the former there was an overall reduction in the expected dog population harbouring echinococcus granulosus and taenia hydatigena. neither treatment was fully effective. | 1978 | 705036 |
| the effect of an antibiotic of the streptothricin family against echinococcus granulosus and taenia hydatigena infections in dogs. | the effect of an antibiotic of the streptothricin class on echinococcus granulosus and taenia hydatigena infections has been investigated in a trial involving 160 dogs. the drug showed significant activity in freeing dogs from thydatigena, but the evidence for similar activity against e granulosus was less well marked. vomiting and diarrhoea were common sequelae of dosing. the preparation tested consisted of four chemical components and the cestocidal value of each was not determined. | 1978 | 705037 |
| the effect of diuredosan on echinococcus granulosus and taenia hydatigena infections in dogs. | diuredosan has been tested against echinococcus granulosus and taenia hydatigena infections in dogs. the drug showed significant activity against t hydatigena, but there was no significant dose response curve against e granulosus in this trial. two treatments at 50 mg/kg or 100 mg/kg, however, reduced the number of dogs infected with hydatid worms. worms were still present in some dogs after three treatments at 50 mg/kg. vomiting and diarrhoea were relatively common sequelae at and above 50 mg/k ... | 1978 | 705038 |
| failure to demonstrate resistance in goats, sheep and cattle to fasciola hepatica after infection with cysticercus tenuicollis. | goats, sheep and cattle given 1000--1500 eggs of taenia hydatigena and challenged orally 12 weeks later with 400 fasciola hepatica metacercariae, showed no evidence of resistance. the fluke burdens were not significantly different from those in control animals. | 1978 | 749087 |
| surgical transfer of the cysticerci of taenia hydatigena. | unattached immature cysticerci of taenia hydatigena were transferred surgically to the peritoneal cavities of 4 sheep. mature infective cysticerci were recovered from the recipient sheep 3 and 5,8 months later. a fully developed live cysticercus was present in the muscle layers surrounding the scar of the laparotomy site in 2 of the animals. | 1978 | 754126 |
| serological studies on pigs experimentally infected with taenia solium or taenia hydatigena. | | 1975 | 810502 |
| [the efficacy of mebendazole and praziquantel on larval taeniids from mouse, rabbit and pig (author's transl)]. | the efficacy of mebendazole (janssen) and praziquantel (bayer) on cysticercus fasciolaris, c. tenuicollis resp. c. pisiformis was studied in 125 mice, 63 pigs and 30 rabbits. all mice were infected naturally with c. fasciolaris. the pigs were infected experimentally with 2000 resp. 5000 eggs of taenia hydatigena and the rabbits with 1500 eggs of taenia pisiformis. 8 weeks p.i. animals were divided into groups and received 25 mg/kg mebendazole or 50 mg/kg praziquantel on 5 consecutive days as wel ... | 1977 | 860324 |
| helminth parasites of bighorn sheep in oregon. | the lungs and gastrointestinal tracts from 18 hunter-killed bighorn rams (ovis canadensis californiana) were examined in total or in part for helminth parasites during a two-year study of three separate herds in eastern oregon. prevalence was 100% with the lungworm protostrongylus stilesi. the gastrointestinal fauna from 11 rams comprised cooperia oncophora, marshallagia marshalli, nematodirus oiratianus, oesophagostomum spp., ostertagia occidentalis, o. ostertagi, skrjabinema ovis, trichostrong ... | 1977 | 864844 |
| the effect of niclosamide on echinococcus granulosus, taenia hydatigena and taenia ovis infections in dogs. | the effect of niclosamide (particle size 1 micron m) and its piperazine salt (particle size 5-10 micron m) on echinococcus granulosus and taenia hydatigena has been investigated. the piperazine salt of niclosamide was also tested for activity against taenia ovis. these trials involved 326 dogs. irrespective of particle size, the drug was found to be virtually inactive against 28-day-old e granulosus. some evidence was found indicating that there may be a low degree of activity against 70-day-old ... | 1977 | 877439 |
| the effect of micronised nitroscanate on echinococcus granulosus and taenia hydatigena infections in dogs. | trials with micronised nitroscanate carried out on 170 dogs infected with either echinococcus granulosus or taenia hydatigena indicated that a single treatment at 62-5 mg/kg and 16 mg/kg respectively significantly reduced the proportion of dogs infected with tapeworms. some evidence is presented that micronisation may give a fourfold increase in the efficiency of nitroscanate in worm removal without increasing the toxic effects to the dog. | 1977 | 877440 |
| prevalence of echinococcus granulosus and other cestodes in dogs on the navajo reservation in arizona and new mexico. | fecal specimens from 429 dogs purged with arecoline hydrobromide at 131 rural camps on the navajo reservation in arizona and new mexico were examined for cestodes. echinococcus granulosus was found in feces from 3 dogs at 3 different camps. other cestodes present were taenia hydatigena--45.5%, taenia pisiformis--21.0%, taenia serialis--11.9%, and taenia ovis--1.6%. | 1977 | 879566 |
| the effect of praziquantel on echinococcus granulosus, taenia hydatigena and taenia ovis infections in dogs. | the effect of praziquantel on echinococcus granulosus, taenia hydatigena and t ovis was investigated in a trial involving 360 dogs. the drug was found to be highly toxic to tapeworms. few dogs remained infected after a single treatment within the range of dose rates tested (0-31 mg/kg to 10-0 mg/kg body weight). no toxicity to dogs was observed. | 1977 | 905644 |
| [cysticercus tenuicollis (taenia hydatigena, pallas, 1766) in swine from valdivia province, chile (author's transl)]. | | 1977 | 911435 |
| studies on the fate of taenia hydatigena and taenia ovis larvae in rabbits, and cross immunity with taenia pisiformis larvae. | | 1977 | 924711 |
| efficiency of praziquantel, a new cesticide, against taenia hydatigena in the dog. | praziquantel (2 - cyclohexylcarbonyl - 1,3,4,6,7,11b - hexahydro - 2h - pyrazino (2,1 - a) isoquinolin - 4 - one) was tested against artificially established infections of taenia hydatigena in 39 dogs. the formulation used was a 660 mg tablet containing 50 mg of active ingredient (ai). a single oral dose at 1 mg/kg ai completely removed 14-day-old infections in all dogs. 2.5 mg/kg ai praziquantel was completely effective against 7, 14 and 28-day-old worms. 5 mg/kg ai completely removed two-day-o ... | 1977 | 928986 |
| factors regulating tapeworm populations: estimations of the infection pressure and index of clustering from taenia hydatigena before and after the removal of infected dogs. | a pasture was prepared so that an equilibrium of fresh and ageing eggs of taenia hydatigena was present. this was done by placing dogs with patent infections on it for six months. five months after their introduction, groups of lambs were grazed there for two, four, eight, 16 or 32 days. the dogs were then removed. three and six months later, further groups of sheep were grazed there for a similar period. the infection pressures and the indices of clustering of the eggs were calculated by an exa ... | 1976 | 968188 |
| factors regulating tapeworm populations: estimations of the build-up and dispersion patterns of eggs after the introduction of dogs infected with taenia hydatigena. | the build-up of the eggs of taenia hydatigena was measured on a pasture following the introduction of infected dogs. susceptible lambs grazed on the pasture beforehand showed that only small numbers of randomly dispersed infective eggs were present. two dogs each with four patent t hydatigena were chained to kennels placed in the middle of the pasture. the build-up of eggs was determined by grazing further tapeworm-free lambs there for 10-day periods. high cyst counts were obtained in some of th ... | 1976 | 968189 |
| factors regulating tapeworm populations: the changing opportunities of lambs for ingesting the eggs of taenia hydatigena. | some intrinsic factors that may modify the transmission of cysticercosis caused by taenia hydatigena in lambs have been assessed and the age at which the infective pattern should no longer be modified by the grazing-learning process and by colostrum-derived antibody, estimated. lambs of 0-1, 2-3, 5-6, 8-9, 11-12 weeks of age, were placed for one week on a pasture experimentally contaminated with eggs of t hydatigena. the lambs were allowed to suck their mothers from birth. about half the lambs u ... | 1976 | 968190 |
| factors regulating tapeworm populations: dispersion of eggs of taenia hydatigena on pasture. | a dog with four patent taenia hydatigena was placed at a fixed site on a pasture for 50 days. the spread of the eggs was determined by grazing lambs for 10 days on various plots, and counting the cysts present at autopsy. some 'wild' eggs were detected on the pasture before the dog was introduced. nevertheless, a marked divergence from randomness was detected in the cyst counts of lambs grazed within 80 metres of the kennel but not beyond from 10-20 and 40-50 days after the dog had been introduc ... | 1976 | 1033734 |
| treatment of taenia hydatigena infections in dogs with bunamidine hydroxynaphthoate incorporated in food. | | 1975 | 1058378 |
| the effect of bithionol sulphoxide on echinococcus granulosus and taenia hydatigena infections in dogs. | double thiry-vella loops in calves were used to show that when heat stable e coli enterotoxin was in contact with only one of the loops, a net increase in water secretion occured in both. it was concluded that either enterotoxin itself or a mediator substance was absorbed and acted via the systemic circulation. | 1975 | 1090984 |
| the effect of bithionol sulphoxide on echinococcus granulosus and taenia hydatigena infections in dogs. | trials with bithionol sulphoxide involving 130 dogs, infected with either echinococcus granulosus or taenia hydatigena, indicated that a single treatment at a dose rate of 400 mg/kg or two treatments at 50 mg/kg eliminated the former, but a single treatment at 50 mg/kg was sufficient to eliminate the latter. dose rates 200 mg/kg or more were lethal to some dogs. with two doses of 50 mg/kg, there was only minor discomfort from vomiting or diarrhoea in some dogs. | 1975 | 1118658 |
| the effect of development of taenia hydatigena larvae in the peritoneal cavity of dogs on resistance to a challenge infection with echinococcus granulosus. | | 1975 | 1126782 |
| cysticercosis from taenia hydatigena in feedlot lambs. | a feedlot enterprise fattened 50,000 lambs from august, 1973, through may, 1974. of those that died during that period, 96 were necropsied; of this number 27 (28%) were infected with cysticeri. the parasites produced bore channels in livers and bladder worms on viscera. some lesions were assessable for their duration of infection. | 1975 | 1141037 |
| the effect of fospirate on echinococcus granulosus and taenia hydatigena infections in dogs. | trials with fospirate carried out with 170 dogs infected with either echinococcus granulosus or taenia hydatigena indicated that a dose rate of 40 mg/kg given on three occasions and 10 mg/kg given on one occasion eliminated each species, respectively. increasing the dose rat substantially above 40 mg/kg did not reduce the number of treatments required to eliminate all hydatid organisms. vomiting was observed in some dogs. | 1975 | 1166129 |
| the effect of mebendazole on echinococcus granulosus and taenia hydatigena infections in dogs. | the effect of micronised mebendazole on echinococcus granulosus and taenia hydratigena has been investigated in a trial involving 175 dogs. the hydatid organism was eliminated from the dogs at dose rates of either 160 mg/kg given on one occasion or 20 mg/kg given on two occasions. a single dose of 20 mg/kg eliminated t hydratigena. the drug was readily accepted when given in food and there were no untoward sequelae. | 1975 | 1166134 |
| the effect of nitroscanate on echinococcus granulosus and taenia hydatigena infections in dogs. | trials with nitroscanate carried out on 186 dogs infected with either echinococcus granulosus or taenia hydatigena indicated that a single treatment at a dose rate of 1000 mg/kg or two treatments at 250 mg/kg eliminated the former, but a single treatment at 64 mg/kg was sufficient to eliminate the latter. at this dosing schedule, vomiting and diarrhoea occurred, as well as a transient 'tranquillising' effect on some dogs. | 1975 | 1172624 |
| taenia hydatigena--v. surface structure of the adult worm and evaginated scolex. | | 1975 | 1201895 |
| the location of taenia pisiformis, taenia ovis and taenia hydatigena in the gut of the dog and its effect on net environmental contamination with ova. | autopsy of dogs 56 days after infection with either t. pisiformis, t. ovis or t. hydatigena showed that these worms could be found attached at any point along the length of the small intestine, but were most commonly in the anterior half. the mean relaxed lengths of t. pisiformis, t. ovis and t. hydatigena were 107 cm, 156 cm and 177 cm respectively. attached gravid proglottides contained a mean of 41 000 eggs each in t. pisiformis, 31 000 eggs in t. hydatigena and 95000 eggs in t. ovis, whereas ... | 1975 | 1210528 |
| intestinal helminths in dogs and cats on the antillian islands aruba, curaçao and bonaire. | an investigation into the prevalence, identity and size of population of intestinal helminths in dogs and cats was carried out in the dutch antillian islands, curaçao, bonaire and aruba during april and may 1974. ninety-one dogs and 83 cats were examined. in all, 4,824 helminths were isolated and identified. the following species were isolated from dogs: dipylidium caninum (most frequent), ancylostoma caninum (frequent in curaçao), toxocara, taenia hydatigena and ancylostoma braziliense. species ... | 1975 | 1237955 |
| purification of larval taenia solium antigens by gel filtration. | crude larval taenia solium extracts were fractionated by sephacryl s-200 gel filtration into four fractions (w1-w4). the sensitivities of the fractions to rabbit and pig antiserum against taenia solium were tested by double immunodiffusion, immunoelectrophoresis, and elisa. fraction w2 which was highly sensitive to antisera was shown by immunoblotting to contain antigen b (95 and 105 kda). the four fractions were shown to contain antigenic determinants common with pig serum proteins and crude ex ... | 1992 | 1379765 |
| [the helminth fauna of red foxes (vulpes vulpes linnaeus 1758) in north hesse and east westphalia. 1. cestodes]. | between november 1989 and june 1990 a total number of 397 foxes were examined for the presence of cestodes. the animals came from the districts of arnsberg, detmold and kassel. in 16.4% of the foxes infections with echinococcus multilocularis were found, in 28.5% taenia crassiceps, in 14.4% taenia polyacantha, in 4.3% mesocestoides spp., in 3.3% multiceps multiceps, in 2.5% hydatigera taeniaeformis, in 0.8% taenia hydatigena and in 0.3% taenia martis. infections with echinococcus multilocularis ... | 1992 | 1396164 |
| comparative immunoelectrophoretic analysis of echinococcus granulosus, taenia hydatigena and taenia pisiformis cyst fluid antigens by hyperimmune rabbit sera. | cyst fluid antigens of echinococcus granulosus, taenia hydatigena and t pisiformis were examined by electrophoresis using homologous and heterologous hyperimmune rabbit sera to these antigens. while arc 5 forming antibodies were identified in sera from rabbits immunised with e granulosus and t hydatigena cyst fluids, antibodies responsible for forming precipitating antigen b band were detected in rabbit antisera to e granulosus, t hydatigena and t pisiformis antigens. t hydatigena cyst fluid app ... | 1992 | 1410812 |
| a survey of taeniid cestodes in farm dogs in mid-wales. | in 1983-1988, dogs on 315 farms in powys, mid-wales, were purged once with arecoline acetarsol and the faecal purges were examined for cestodes. a few dogs were examined by autopsy. ninety-seven farms had at least one infected dog, and cestodes were found in 161 of the 882 dogs examined. the ovine strain of echinococcus granulosus was found in 41 dogs on 25 farms. taenia hydatigena, t. pisiformis, t. multiceps, t. serialis, t. ovis and dipylidium caninum were recovered from 85, 35, 15, 3, 19 and ... | 1992 | 1417204 |
| the cestodes of foxhounds and foxes in powys, mid-wales. | cestodes were found in 129 of 875 foxhounds from 20 packs in powys, mid-wales, examined by purging in 1983-1988, in the following order of prevalence: taenia hydatigena in 57 hounds (6.51%), echinococcus granulosus in 27 (3.09%), dipylidium caninum in 25 (2.86%), t. ovis in 14 (1.60%), t. pisiformis in 10 (1.14%), t. serialis in five (0.57%) and t. multiceps in four (0.46%). of 197 foxes examined by autopsy, 22 harboured cestodes: two (1.02%) had e. granulosus, nine (4.57%) t. polyacantha, eight ... | 1992 | 1417205 |
| observations on the epidemiology of taenia hydatigena in soay sheep on st kilda. | | 1992 | 1441108 |
| efficacy of a drug combination of praziquantel, pyrantel embonate, and febantel against helminth infections in dogs. | tablets containing praziquantel, pyrantel embonate, and febantel were tested for efficacy against helminths in dogs. a single treatment with this drug combination gave 100% reductions in toxocara canis and taenia hydatigena in experimentally induced infections in dogs. in dogs with naturally acquired infections, treatment gave > 97 to 98% reductions in fecal egg counts attributable to toxascaris leonina, t canis, and uncinaria stenocephala. efficacy against trichuris vulpis was > 92%. | 1992 | 1476306 |
| use of echinococcus granulosus worm antigens for immunodiagnosis of e. granulosus infection in dogs. | echinococcus granulosus worm excretory/secretory antigens (wes) were used in elisa for diagnosis of e. granulosus infection in dogs and compared with protoscolex somatic antigens (psm). sera from 224 dogs were tested. there was no correlation between elisa absorbance values and e. granulosus worm burdens using either antigen. there was a significant linear relationship between absorbance values of sera tested in the elisa using wes (w-elisa) and the elisa using psm (p-elisa). however, there was ... | 1992 | 1485424 |
| production of anti-idiotypic antibodies as potential immunoreagents for the serological diagnosis of bovine cysticercosis. | although serological assays have been developed for cysticercosis, difficulties remain in isolating antigens from cross-reacting components and in obtaining reliable sources of parasite material for purification. the object of this study was to demonstrate the feasibility of using anti-idiotypic antibodies as alternative immunoreagents for the serological diagnosis of bovine cysticercosis. a fraction of taenia hydatigena cyst fluid (thfas) had previously been used as a diagnostic antigen for tae ... | 1992 | 1626868 |
| [helminth infections in wild boars kept in enclosures in southern germany: severity of infections and fecal intensity]. | to determine the intensity of helminth infection and egg output with regard to age and sex of wild boar, stomachs and intestines of 124, lungs of 62, and livers of 39 animals from 5 enclosures in southern germany were examined. the evaluation of the intensity of infection showed 579.4 worms per animal for hyostrongylus rubidus, 510.4 for globocephalus longemucronatus, 476.9 for oesophagostomum dentatum, 476.9 for o. quadrispinulatum, 254.2 for metastrongylus pudendotectus, 176.9 for m. salmi, 14 ... | 1991 | 1796467 |
| a recombinant immunodiagnostic antigen for bovine cysticercosis. | the 70% ammonium sulfate-soluble fraction of the cyst fluid of taenia hydatigena (designated thfas) was previously shown to have potential as an immunodiagnostic reagent for bovine cysticercosis. western blot analysis indicated that the specific reactivity with antibodies in sera of t. saginata-infected cattle was associated with a 10 kda component. rabbit antiserum to thfas identified a homologous antigenic protein from the cestode taenia crassiceps. consequently, a cdna expression library was ... | 1991 | 1822902 |
| use of sentinel lambs for early monitoring of the south powys hydatidosis control scheme: prevalence of echinococcus granulosus and some other helminths. | sentinel lambs were used to identify young echinococcus granulosus infections in sheep, to provide an early indication of the progress of the south powys hydatidosis control scheme. four sentinel lambs were purchased on each of 60 farms, from inside and outside the control area; they were examined when approximately six, 10 and 15 months of age. gross examination, thin slicing of organs and histological examination of the lesions in the viscera revealed no e granulosus hydatid cysts in lambs bor ... | 1991 | 1833872 |
| antibody responses against natural taenia hydatigena infection in dogs in kenya. | antibody responses (igg) against taenia hydatigena infection in dogs in kenya were analysed in elisa using excretory/secretory products of t. hydatigena scoleces derived from goat cysticercus cysts. helminth infections of individual dogs were confirmed at autopsy. t. hydatigena worms were found in 89.5% of 143 dogs, and positive anti-t. hydatigena antibody levels were detected in 58.7% of infected dogs. positive antiscolex antibody levels were detected in 40.0% of turkana dogs uninfected with t. ... | 1991 | 1869360 |
| serological diagnosis of cysticercosis by an enzyme-linked immunosorbent assay in experimentally infected cattle. | taenia saginata infections were established in four groups of calves by administering doses of 10, 10(2), 10(3) and 10(4) infective eggs respectively by gavage. a fifth group remained as uninfected controls. sera were collected from all calves over a period of 210 days. the sera were examined by an enzyme-linked immunosorbent assay (elisa) with a fraction of larval taenia hydatigena cyst fluid as antigen for the presence of anti-t. saginata igg antibodies. at slaughter, the tongue, masseter, dia ... | 1991 | 1889037 |
| differential migration of t and b cells during an acute inflammatory response. | inflammation in the liver and mammary glands of sheep caused by challenge infection with taenia hydatigena or infusion of killed staphylococcus aureus, respectively were characterized by the recruitment of both t and b cells. the patterns of migration of these two major lymphocyte subpopulations were distinctly different. while t cells seemed to migrate out of existing, flat endothelium-lined blood vessels resulting in a diffuse distribution at the sites of inflammation, b cells were characteris ... | 1991 | 1909647 |
| echinococcus multilocularis: characterization of a dna probe. | a 0.6 kb dna fragment has been isolated from a genomic sublibrary of the cestode echinococcus multilocularis. this dna-fragment showed a strong hybridization signal to 32pdctp labeled total dna prepared from e. multilocularis metacestode material. the fragment was subcloned into the escherichia coli vector bluescript bs+ resulting in the recombinant plasmid pal1. the recombinant parasite dna probe was labeled by biotinylation and hybridized to southern blots of resolved ecori/psti digested genom ... | 1990 | 1980566 |
| evaluation of a 'dipstick' immunoassay to detect cysticercosis in experimentally infected cattle. | a 'dipstick' immunoassay for bovine cysticercosis, using an antigen isolated from taenia hydatigena cyst fluid, was evaluated in cattle experimentally infected with taenia saginata. the assay correctly identified six out of seven infected cattle, including an animal in which only 12 living cysticerci were found. cattle became seropositive as early as 3 weeks post-infection. a false-negative reaction was found for one very lightly infected animal, from which only four living cysticerci were recov ... | 1991 | 2024426 |
| development of a serologic assay for cysticercosis, using an antigen isolated from taenia spp cyst fluid. | an ammonium sulfate-soluble fraction of taenia hydatigena cyst fluid (thfas) was further evaluated for use in the immunodiagnosis of cysticercosis. analysis of thfas by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and protein immunoblot analysis confirmed earlier reports of a highly specific, low molecular weight antigen in this preparation; in contrast, other components of thfas were shown to react nonspecifically. antibodies against the less than 12-kd diagnostic antigen were dete ... | 1991 | 2035923 |
| release and survival of echinococcus eggs in different environments in turkana, and their possible impact on the incidence of hydatidosis in man and livestock. | in turkana, kenya, a prevalence of hydatidosis of nearly 10% has been recorded among the pastoralists yet their livestock have a much lower prevalence of the disease. the present study investigated the release from dogs and subsequent survival of echinococcus eggs in turkana huts, water-holes and in the semi-arid environment. the results were compared with the survival of eggs of taenia hydatigena and t. saginata. the study was repeated under the cooler and moister conditions found in maasailand ... | 1991 | 2050986 |
| parasites of south african wildlife. vi. helminths of blue duikers, cephalophus monticola, in natal. | the helminths of 3 blue duikers, cephalophus monticola, from 3 nature reserves in natal were collected, counted and identified. taenia hydatigena larvae, a race of cooperia rotundispiculum, gongylonema angistris, trichostrongylus falculatus and trichostrongylus rugatus appear to be new parasite records for blue duikers in south africa. | 1991 | 2052315 |
| isolation and purification of a diagnostic antigen for bovine cysticercosis by hydrophobic chromatography. | an ammonium sulfate fraction of taenia hydatigena cyst fluid (thfas) was further fractionated by hydrophobic interaction chromatography, using alkylagarose and omega-amino alkylagarose columns, in an effort to isolate and purify a specific diagnostic antigen in the thfas preparation. the less than 12 kda antigen was found to have an affinity for immobilized alkanes with chain length of six carbons or greater. the antigen was recovered in an ethylene glycol eluate from a hexylagarose column then ... | 1991 | 2053273 |
| population dynamics in echinococcosis and cysticercosis: regulation of taenia hydatigena and t. ovis in lambs through passively transferred immunity. | a comparison has been made of the interactions between passively transferred and actively acquired immunity in regulating populations of taenia hydatigena and t. ovis. when ewes were grazed prior to parturition under a high infection pressure, immunity was transferred to their offspring for up to 8 weeks. a qualitative difference between the species was the destruction of larval t. ovis prior to their establishment ('pre-encystment immunity') and that of t. hydatigena after they had become estab ... | 1990 | 2235070 |
| the epidemiology of helminthosis in small ruminants under the traditional husbandry system in eastern nigeria. | the epidemiology of helminth infections in west african dwarf sheep and goats under the traditional husbandry system prevailing in the derived savanna area of eastern nigeria was studied for 12 months. the infections observed were due to haemonchus contortus (87.1%), trichostrongylus spp. (63.8%), metacestodes of taenia hydatigena (30.2%), oesophagostomum columbianum (22.4%), strongyloides sp. (18.8%), cooperia spp. (17.2%), gaigeria pachyscelis (6.0%), moniezia expansa (6.0%), bunostomum trigon ... | 1990 | 2247944 |
| survey of hepatic and pulmonary helminths of wild cervids in alberta, canada. | during the 1988 hunting season, livers and lungs from 263 mule deer (odocoileus hemionus hemionus), 198 moose (alces alces), 147 white-tailed deer (odocoileus virginianus), and 94 wapiti (cervus elaphus nelsoni) from alberta (canada) were collected for parasitological examination. most of the samples (89%) were submitted by big game hunters throughout the province. giant liver fluke (fascioloides magna) was found in 9% of 22 yearling and 29% of 65 adult wapiti; 4% of 161 adult moose; and 2% of 9 ... | 1990 | 2250321 |
| hydatid disease in the turkana district of kenya, vii: analysis of the infection pressure between definitive and intermediate hosts of echinococcus granulosus, 1979-1988. | the rate of acquisition of echinococcus granulosus and taenia hydatigena was examined in dogs treated with praziquantel in northwestern turkana district of kenya. an attempt was also made to assess the effect of drought on the prevalence of e. granulosus. the infection pressure to dogs with the cestodes was shown to be high, and the prevalence returned to pretreatment levels within six months. the unreliability of arecoline purging in prevalence studies of dog cestodes is shown by mathematical c ... | 1990 | 2260900 |
| countercurrent immunoelectrophoresis in the diagnosis of taenia hydatigena cysticercosis in goats. | the procedure of countercurrent immunoelectrophoresis in the diagnosis of taenia hydatigena cysticercosis in goats was carried out for antemortem diagnosis of t. hydatigena cysticercosis in experimentally and naturally infected goats. the antigens of cyst fluid, scolex and membrane of t. hydatigena metacestodes were purified and compared. the sensitivity of the test in experimentally and naturally infected goats was 57.1 and 52.5%, respectively, whereas its specificity using antisera raised agai ... | 1990 | 2267724 |
| transmission of taeniid tapeworm eggs via blowflies to intermediate hosts. | experiments showed that dead blowflies containing eggs of taenia hydatigena can transmit infection if ingested by lambs during grazing. rabbits became infected with t. pisiformis after grazing grass exposed to blowflies that had been in contact with dog faeces containing the eggs of this parasite. when captive blowflies were exposed first to dog faeces containing proglottids of t. hydatigena and then to cooked meat, 100% of pigs fed on this meat became infected. the experiments are intended to m ... | 1990 | 2314928 |
| assessment of an enzyme-linked immunosorbent assay using a taenia hydatigena fraction antigen in the diagnosis of cysticercosis in cattle. | enzyme linked immunosorbent assay (elisa) using a fraction of larval taenia hydatigena cyst fluid antigen was carried out on 469 bovine sera collected at slaughter from feedlot cattle for the presence of anticysticercosis antibodies. cysticerci, in low numbers, were found in the heart, tongue and/or masseter muscles of 84 of the 469 cattle at postmortem inspection. only nine sera gave positive elisa reactions and in only one of these nine animals were cysticerci found. within the limitations of ... | 1990 | 2357670 |
| cysticerci (cestoda: taeniidae) from white-tailed deer, odocoileus virginianus, in southern florida. | metacestodes (cysticerci) of taenia omissa lühe, 1910, and taenia hydatigena pallas, 1776, were found in 9 and 1 of 124 white-tailed deer, respectively, in southern florida in 1984-1986. intensities of t. omissa varied from 1 to 15 (mean = 4.6); only 1 cysticercus of t. hydatigena was collected. no significant difference in the prevalences of t. omissa according to sex, age, or locality was observed. | 1990 | 2380871 |
| detection of taenia hydatigena copro-antigens by elisa in dogs. | a sandwich-elisa was developed for the detection of soluble taenia hydatigena antigens in fecal samples of dogs. affinity-purified polyclonal catching antibodies and alkaline phosphatase-conjugated detecting antibodies were employed, which had been obtained from rabbits hyperimmunized with excretory/secretory antigens derived from in vitro maintained adult taenia hydatigena. the assay allowed the detection of 800 ng t. hydatigena antigen g-1 of feces as a lower limit. six helminth-free dogs were ... | 1990 | 2382393 |
| cysticercosis: cellular immune responses during primary and secondary infection. | immune reactions to cysticercosis have been extensively studied in mice. the lack of significant lymphocyte infiltration into the livers of infected mice and the obvious role of antibodies in rejection has led to the general conclusion that cellular reactions do not play a role in protection against this disease. in contrast, the present study examining the immune response to cestode infections in a large animal model (sheep) revealed the presence of a massive and highly organized cellular infil ... | 1990 | 2402431 |
| a potential diagnostic reagent for bovine cysticercosis. | a fraction of larval taenia hydatigena cyst fluid was shown to have high sensitivity and specificity in the enzyme-linked immunosorbent assay (elisa) for the detection of bovine antibodies to the heterologous parasite taenia saginata. this antigenically active lipoprotein fraction was isolated by ultracentrifugal density flotation using either ammonium sulfate (specific gravity = 1.231 g per ml) or nacl/kbr (specific gravity = 1.225 g per ml), followed by ion-exchange chromatography. sodium dode ... | 1985 | 2419535 |
| specificity of scolex and oncosphere antigens for the serological diagnosis of taeniid cestode infections in dogs. | groups of dogs raised free of helminths were monospecifically infected with the common nematodes toxocara canis, ancylostoma caninum and trichuris vulpis. serums from these dogs, and a group of dogs of unknown history but infected with dirofilaria immitis and dipylidium caninum, had levels of antibody to their homologous nematode antigens readily detectable by elisa. no cross-reactions were apparent when these serums were tested by elisa using oncosphere antigens of taenia hydatigena, t. pisifor ... | 1986 | 2421704 |
| biochemical characterization of taenia hydatigena cysticerci from goats and pigs. | analysis of the major biochemical components of taenia hydatigena cysticerci collected from goats and pigs showed marked differences, particularly in glycogen, protein, lipid and dna levels. differences were also detected in the levels of cholesterol, triglycerides, free fatty acids and phospholipids. furthermore, the profile of phospholipid fractions revealed quantitative differences between the two species. it is concluded that the cysticerci of goat and pig origin probably represent two diffe ... | 1989 | 2480977 |
| [comparative immunochemical characteristics and serological activity of the antigens of cysticercus tenuicollis and taenia hydatigena]. | data are given on immunochemical analysis and serological activity of different antigens from larval and imaginal forms of taenia hydatigena. considerable heterogeneity and close antigenic affinity of the parasite's extracts under study both between each other and with the host's proteins, excluding the antigens from t. hydatigena, which has no common components with the latter, are established. in the homologous system in each extract under study there were recognised no less than 5 to 9 antige ... | 1989 | 2482474 |
| the ovine cysticercosis as models for research into the epidemiology and control of the human and porcine cysticercosis taenia solium: i. epidemiological considerations. | a brief review is given of the transmission dynamics of the ovine cysticercoses taenia hydatigena and t. ovis. the importance of the basic reproductive rate (ro) and the parasite, host and socio-ecological factors determining the epidemiological steady states of taeniidae are described. the transmission dynamics of these ovine cysticercoses have been used as models to assist in identifying the biological and epidemiological research needed for developing strategies for the control of porcine cys ... | 1989 | 2488995 |
| the ovine cysticercosis as models for research into the epidemiology and control of the human and porcine cysticercosis taenia solium: ii. the application of control. | field trials and control programmes demonstrate that ovine echinococcosis (echinococcus granulosus) and the cysticercoses (taenia hydatigena and t. ovis) have different stabilities and may not respond in the same way to control. the first-named, which is usually in the endemic state, is readily transformed by a dog-dosing programme to extinction status. in contrast, the cysticercoses, usually in the hyperendemic state, may only be transformed to the endemic state. the consequence of this include ... | 1989 | 2518723 |
| specific detection of circulating surface/secreted glycoproteins of viable cysticerci in taenia saginata cysticercosis. | a mouse monoclonal antibody (moab), reactive with a repetitive carbohydrate epitope on lentil-lectin adherent glycoproteins present on the surface and in the secretions of taenia saginata cysticerci, was used in the construction of a diagnostic elisa assay to detect these glycoproteins in the serum of t. saginata infected cattle. the moab was used as the trapping layer and subsequently bound glycoprotein was revealed using the same moab and biotinylated peroxidase-streptavidin complex as the dev ... | 1989 | 2674862 |
| the serological response of pigs experimentally infected with a species of taenia from taiwan. | an enzyme-linked immunosorbent assay (elisa) for the detection of antibody in pigs infected with a possibly new species of taenia isolated in taiwan is described. the test antigen thfas was fractionated from the cyst fluid of a heterologous cestode taenia hydatigena. in lightly infected pigs (less than or equal to 4 recovered cysts at necropsy 17 weeks post-inoculation), antibody was detected as early as 3 weeks post-inoculation. in more heavily infected pigs (6-72 recovered cysts at necropsy 32 ... | 1989 | 2728318 |
| superoxide dismutase in cestodes. isoenzymatic characterization and studies of inhibition by a series of benzimidazoles and by pyrimidine derivatives of recent synthesis. | the activities of superoxide dismutase (sod) (e.c.1.15.1.1) in extracts of five cestode parasites (moniezia expansa, m. benedeni, avitellina centripunctata. taenia hydatigena and dipylidium caninum) were investigated. the polyacrylamide gel electrophoretic patterns revealed that each of the five species had four isoenzyme bands; they could be differentiated principally by their displacements and, less clearly, by their intensities. determinations were made of the inhibitory activities of four be ... | 1989 | 2783180 |
| lymphocyte subpopulations of sheep in protective immunity to taenia hydatigena. | lymphocyte subpopulations entering the liver and surrounding the rejection sites during a 9-day period after infection of immune sheep with taenia hydatigena were identified with the aid of monoclonal antibodies against lymphocyte cell surface markers. viable lymphocytes were isolated from the liver tissue and stained by indirect immunofluorescence for subsequent flow cytometry analysis. over the first 6 days after challenge infection a marked increase in the ratio of t-helper to t-suppressor/cy ... | 1989 | 2785669 |
| significance of particle size of mebendazole in the treatment of tapeworm infections. | taenia hydatigena and echinococcus granulosus in dogs have been used as a model to evaluate the response of these parasites to increasing doses of mebendazole in different dose forms (powder, micronized powder and tablets of micronized powder). overall the micronized powder proved to be the most active, the tablets less so and the normal powder least active. statistical confirmation was obtained that the use of this drug in different dose forms changed the rate of the response, suggesting that i ... | 1985 | 2867190 |
| [fecal surveys in pastured sheep and the occurrence of cysticercus tenuicollis in slaughtered sheep]. | out of 4 fenced pastures, 2 stationary flocks and 3 wandering flocks with approx. 2,000 mother sheep, 962 samples of faeces were checked for the occurrence of gastro-intestinal nematodes and lungworms. irrespective of the way the sheep are kept, an infestation incidence of 11.1 to 100% with gastro-intestinal nematodes was found. in one flock even after two treatments 66.7% were still infected; therefore, suspect methods of treatment have to be avoided and a constant change of anthelmintics is ab ... | 1988 | 2977532 |
| taenia hydatigena: isolation of mitochondrial dna, molecular cloning, and physical mitochondrial genome mapping. | mitochondrial dna was isolated from taenia hydatigena, t. crassiceps, and echinococcus granulosus using a cetyltrimethylammonium bromide precipitation technique. the technique is simple, rapid, reproducible, and does not require extensive high speed ultracentrifugation. the advantage of using mitochondrial dna from taeniid cestodes for comparative restriction analysis was demonstrated. mitochondrial dna of t. hydatigena was isolated as covalently closed circular molecules. these were linearized ... | 1987 | 3034656 |
| immunodetection of echinococcus eggs from naturally infected dogs and from environmental contamination sites in settlements in turkana, kenya. | a species-specific indirect immunofluorescence test using an anti-echinococcus oncosphere monoclonal antibody (egoh6-4e5) was applied to identify echinococcus oncospheres released from taeniid eggs collected in environmental soil and water samples, and from perianal or faecal samples of naturally infected dogs, in northern turkana, kenya. the specificity of immunodetection of echinococcus eggs by specific fluorescence of echinococcus oncospheres from naturally infected dogs was 100% when compare ... | 1988 | 3055462 |
| population dynamics in echinococcosis and cysticercosis: economic assessment of control strategies for echinococcus granulosus, taenia ovis and t. hydatigena. | an official control programme against echinococcus granulosus and taenia hydatigena has been in operation in new zealand for more than 28 years and against taenia ovis for more than 18 years. this unique effort to control three metazoan parasites at the same time has led to a change from endemic to extinction status for e. granulosus but only a change from hyperendemic to endemic status for t. hydatigena and t. ovis. this has presented problems in determining the most cost-effective future contr ... | 1988 | 3140196 |