| [electron microscopic and morphometric investigations of the integument of acanthocephala (aschelminthes) (author's transl)]. | the integument of the acanthocephalans echinorhynchus gadi, acanthocephalus lucii, polymorphus minutus and macracanthorhynchus hirudinaceus have been investigated by stereoscan and transmission electron microscopy. the absorptive surface is considerably increased by invaginations of the outer plasma membrane (pore canals and vesicles). the rate of this enlargement has been calculated using morphometric methods. the values range from 20 to 62. the values are compared to values obtained from other ... | 1978 | 735302 |
| enzymes of the pentose phosphate pathway in macracanthorhynchus hirudinaceus (acanthocephala). | | 1975 | 1109828 |
| ultrastructure of the spermatid and spermatozoon of macracanthorhynchus hirudinaceus. | the ultrastructure of the spermatid and spermatozoon of macracanthorhynchus hirudinaceus (archiacanthocephala) was studied by means of transmission electron microscopy. the flagellum and nucleus in the spermatid gradually expanded simultaneously. the karyoplasma of the spermatid transformed into dense inclusions and a multibarrel structure, which were also found in the spermatozoan body. the multibarrel structure was located close to the flagellum and consisted of many irregular microtubes. the ... | 1992 | 1293193 |
| efficacy of an in-feed preparation of ivermectin against endoparasites and scabies mites in swine. | in 2 trials, the efficacy of an in-feed preparation of ivermectin was evaluated in 40 pigs naturally infected with endoparasites and sarcoptes scabiei var suis. treated pigs (n = 10 in each trial) were fed a ration containing 2 ppm ivermectin for 7 days, followed by consumption of a nonmedicated ration for the remainder of the trial. control pigs (n = 10 in each trial) were fed a complete, nonmedicated ration for the duration of the trial. pigs in trial a were monitored for 14 days after treatme ... | 1992 | 1586019 |
| comparative investigations of the morphology and chemical composition of the eggshells of acanthocephala. i. macracanthorhynchus hirudinaceus (archiacanthocephala). | eggshells of macracanthorhynchus hirudinaceus (archiacanthocephala) were investigated for their fine structure as well as their chemical composition. the acanthor larvae are surrounded by four eggshells (e1-4) separated by interstices of low electron density (g1-4). as these envelopes are secreted in different sequences and are reinforced to different degrees, their appearance varies throughout development. the outermost eggshell (e1) of this species has a tripartite appearance; it contains neit ... | 1991 | 1717974 |
| loperamid, an efficacious drug against the acanthocephalan macracanthorhynchus hirudinaceus in pigs. | | 1990 | 2217124 |
| [light and electron microscopic studies of the histopathogenicity of macracanthorhynchus hirudinaceus (archiacanthocephala) in experimentally infected domestic swine]. | one and 12 weeks after infection the lesions in the small intestine of two domestic pigs caused by macracanthorhynchus hirudinaceus were studied by means of light and electron microscopy. worms of 7 d.p.i. were found to have penetrated with their presoma into the tunica propria and partly into the tunica muscularis where they had caused local mechanic destructions and heavy eosinophilic-like and hemorrhagic reactions. most eosinophilic-like granulocytes were attracted to the proboscis hooks, at ... | 1990 | 2336449 |
| efficacy of an in-feed ivermectin formulation against gastrointestinal helminths, lungworms, and sarcoptic mites in swine. | the efficacy of ivermectin as an in-feed formulation was evaluated against naturally acquired gastrointestinal helminths, lungworms, and sarcoptic mites (experiment 1; n = 24) and against induced infection with intestinal nematodes (experiment 2; n = 24) in pigs. treatments consisted of ivermectin administered in feed at concentrations calculated to provide 100 or 200 micrograms/kg of body weight/d for 7 days or of nonmedicated feed (controls) for 7 days. at concentration of 100 micrograms of iv ... | 1989 | 2782722 |
| a model of the cerebral ganglion in macracanthorhynchus hirudinaceus (acanthocephala). | | 1987 | 3625438 |
| survival of macracanthorhynchus ingens in swine and histopathology of infection in swine and raccoons. | animal husbandry aimed at preventing macracanthorhynchus hirudinaceus infections in swine is not successful in preventing exposure to macracanthorhynchus ingens, and it is probable that pigs occasionally acquire acanthocephalans of that species. in some pigs, m. ingens survived 2 weeks and grew several millimeters. in such cases, destruction of villi, erosion of epithelium, leukocytic infiltration, and altered cytological structure at attachment sites accompanied the infection. penetration was l ... | 1986 | 3734995 |
| [preliminary observation on the karyotype of macracanthorhynchus hirudinaceus]. | | 1985 | 3837717 |
| human infection by an acanthocephalan macracanthorhynchus hirudinaceus in thailand: new light on a previous case. | | 1974 | 4472139 |
| anatomy of the cerebral ganglion of the female acanthocephalan, macracanthorhynchus hirudinaceus. | | 1973 | 4784297 |
| [cholinesterase activity in macracanthorhynchus hirudinaceus (pallas, 1781) (acanthocephala)]. | | 1973 | 4786640 |
| collagen from the giant acanthocephalan macracanthorhynchus hirudinaceus. | | 1970 | 4921065 |
| partial purification and properties of glucose-6-phosphate dehydrogenase from macracanthorhynchus hirudinaceus (acanthocephala). | | 1971 | 5122682 |
| moniliformis dubius and macracanthorhynchus hirudinaceus: na, k, ca, and mg content, and na and k active transport. | | 1970 | 5413006 |
| sterols in ascaris lumbricoides (nematoda), macracanthorhynchus hirudinaceus and moniliformis dubius (acanthocephala), and echinostoma revolutum (trematoda). | | 1970 | 5504522 |
| [parasitism in humans due to macracanthorhynchus hirudinaceus (pallas 1781) on madagascar]. | | 1968 | 5679556 |
| oligosaccharidases from macracanthorhynchus hirudinaceus (acanthocephala) from swine. | | 1968 | 5758299 |
| human infection with the acanthocephalan macracanthorhynchus hirudinaceus in bangkok: report of a case. | | 1965 | 5829134 |
| [note on the biological cycle of macracanthorhynchus hirudinaceus (pallas 1781) in madagascar]. | | 1966 | 5951731 |
| studies on the tca cycle of macracanthorhynchus hirudinaceus (acanthocephala). | | 1966 | 5967689 |
| studies on glycolytic enzymes from macracanthorhynchus hirudinaceus (acanthocephala). | | 1966 | 5969115 |
| studies on potential carbohydrate regulatory enzymes and metabolite levels in macracanthorhynchus hirudinaceus. | | 1981 | 6457904 |
| eosinophilic enteritis due to macracanthorhynchus hirudinaceus infection: report of 3 cases. | | 1983 | 6875423 |
| flubendazole: dose range and efficacy studies against common internal parasites of swine. | the anthelmintic spectrum of activity and efficacy of flubendazole, using pigs naturally infected with helminth parasites, were determined in 4 experiments, using 157 pigs. flubendazole (1.5 mg/kg of body weight) mixed in feed or top-dressed on feed for 5 consecutive days was highly effective as an anthelmintic. this dosage level indicated 100% efficacy against mature ascaris suum, oesophagostomum dentatum, trichuris suis, and metastrongylus apri. there was 88% efficacy against strongyloides ran ... | 1983 | 6881670 |
| human infection with macracanthorhynchus hirudinaceus travassos, 1916 in guangdong province, with notes on its prevalence in china. | | 1983 | 6882052 |
| intestinal lysophospholipase and eosinophil responses to macracanthorhynchus hirudinaceus (acanthocephala). | | 1982 | 7131203 |
| acute abdominal pain due to macracanthorhynchus hirudinaceus infection: a case report. | | 1982 | 7147007 |
| [an investigation on transmitters of macracanthorhynchus hirudinaceus]. | | 1982 | 7151587 |
| membrane potentials in an acanthocephalan worm (macracanthorhynchus hirudinaceus). | the resting membrane potential of the acanthocephalan rete system in macracanthorhynchus hirudinaceus was -35 +/- 1.5 mv (n = 20) and was dependent upon the external potassium concentration. the membrane potential reached 0 mv when the external potassium concentration was 160 mm. spontaneous spike potentials of 45 mv +/- 10 were dependent on calcium flux. the membrane potential was depolarized by acetylcholine, potassium-free medium, calcium ions and chloride-free medium but not by changes in th ... | 1981 | 7267148 |
| study on a new egg count technique for macracanthorhynchus hirudinaceus and ascaris suum. | this paper deals with a new egg count technique for macracanthorhynchus hirudinaceus and ascaris suum. the making of the new counter and the operation are described. the eggs of m. hirudinaceus in the upper, the middle and the lower levels of the sediment from swine feces were counted by the new egg count technique and the numbers of the eggs in the sedimentary liquids diluted two, four, six, eight and ten times were nearly similar. this indicates that the eggs dispersed evenly in the sediment a ... | 1996 | 8750688 |
| sus scrofa domestica endoparasitic resistance in the amazonas. | the domestic pig (sus scrofa domestica l.) has been wild breeding in the varzea amazonian estuary area. without dietary supplement or medical prevention, the pigs survive, bringing economic benefits to local peasants. endoparasitic diseases generate economic losses because of neonatal death and clinical disease. we assessed the nematoda (o. nematoda) and coccidia (o. eucoccidia) parasitic level and tolerance in 75 pigs (0-18 months) from 35 families using the following methods: (i) larvae cultur ... | 1996 | 8784532 |
| helminths of wild boar in spain. | forty-seven wild boars (sus scrofa) collected from two areas in the province of valencia (eastern spain) were examined for digestive and respiratory helminth parasites. helminth species and their prevalence were taenia hydatigena cysticercus (19%), ascarops strongylina (87%), physocephalus sexalatus (6%), ascaris suum (2%), metastrongylus spp. (85%), capillaria sp. (2%) and macracanthorhynchus hirudinaceus (21%). trichinella spp. were not found. physocephalus sexalatus, a. suum, capillaria sp. a ... | 2001 | 11763752 |
| electrophysiology of acanthocephalan body wall muscles. | body wall muscles of an acanthocephalan macracanthorhynchus hirudinaceus were studied by means of scanning and light microscopy and intracellular recording of potentials. three types of spontaneous potential changes were found: larger (l) potentials which usually exhibited overshoot and were as large as 65 mv; smaller symmetric (a) potentials approximately 15 mv in amplitude; and even smaller asymmetric (s) potentials which sometimes reached 10 mv. the potentials recorded depended upon the posit ... | 1979 | 11799684 |
| helminth parasites of the wild boar, sus scrofa, in luristan province, western iran and their public health significance. | seven helminth species were obtained from 12 wild boars (sus scrofa) during a survey from 2000 to 2001 in luristan province, western iran. these species include the cestode larvae cysticercus tenuicollis (25%), c. cellulosae (8.3%), the nematodes metastrongylus apri (41.6%), m. pudendotectus (16.6%), m. salmi (8.3%), trichuris suis (8.3%) and the acanthocephalan macracanthorhynchus hirudinaceus (41.6%). no trematodes were found. seven wild boars (58.3%) were identified as having at least one hel ... | 2003 | 12895286 |
| chromosome morphology and behavior in macracanthorhynchus hirudinaceus. | | 1964 | 14217942 |
| a study on the neutral lipids and phospholipids of the acanthocephala macracanthorhynchus hirudinaceus and moniliformis dubius. | | 1964 | 14246355 |
| the chromosomes of macracanthorhynchus hirudinaceus (pallas). | | 1950 | 15409580 |
| parasitic zoonoses in papua new guinea. | relatively few species of zoonotic parasites have been recorded in humans in papua new guinea. a greater number of potentially zoonotic species, mostly nematodes, occur in animals but are yet to be reported from humans. protozoa is the best represented group of those infecting man, with giardia duodenalis, cryptosporidium parvum, cyclospora cayetanesis, toxoplasma gondii, sarcocystis spp., entamoeba polecki, balantidium coli and, possibly, blastocystis hominis. the only zoonotic helminths infect ... | 2005 | 15831107 |
| ultrastructure of spermiogenesis and the spermatozoon of macracanthorhynchus hirudinaceus (pallas, 1781) (acanthocephala: archiacanthocephala), a parasite of the wild boar sus scrofa. | the present paper describes the ultrastructure of spermiogenesis and the spermatozoon of macracanthorhynchus hirudinaceus, an acanthocephalan parasite of the wild boar sus scrofa. at the beginning of spermatogenesis, spermatocytes exhibit synaptonemal complexes and 2 centrioles. in the spermatid, only 1 centriole remains, generating a flagellum with a 9+2 pattern. another ultrastructural feature observed during the spermiogenesis of m. hirudinaceus is the condensation of the chromatin, forming a ... | 2005 | 16108538 |
| a study on intestinal helminthes of dogs, foxes and jackals in the western part of iran. | human infection especially with helminth parasites is an emerging health issue, as the human environment is increasingly shared with infected animals, either pets or wild life. in this survey, the intestinal content of 83 stray dogs, 22 red foxes and 10 golden jackals collected from the west azarbaijan, kordestan and kermanshah provinces in the west of iran, were studied for the presence of helminth parasites. the percentage of different species recovered from these animals is listed as follows: ... | 2006 | 16899340 |
| new records of macracanthorhynchus hirudinaceus in sciuridae. | | 1946 | 21022162 |
| macracanthorhynchus hirudinaceus eggs in canine coprolite from the sasanian era in iran (4(th)/5(th) century ce). | present paper is the second publication introducing the paleoparasitological findings from animal coprolites obtained from archeological site of chehrabad salt mine in northwestern iran. the current archeological site is located in northwest of iran, dated to the sassanian era (4(th)/5(th) century ce). in the summer 2012 the carnivore coprolite was obtained within the layers in the mine and were thoroughly analyzed for parasites using tsp rehydration technique. eggs of 0 were successfully retrie ... | 0 | 26246822 |
| helminth parasites of wild boars, sus scrofa, in bushehr province, southwestern iran. | wild boars, sus scrofa, of wide distribution considered as a potential source of zoonotic parasites. the current study aimed to assess the prevalence of helminth infections in wild boars in the persian gulf coastal area (bushehr province), southwestern iran. | 0 | 28127344 |
| evolutionary anatomy of the muscular apparatus involved in the anchoring of acanthocephala to the intestinal wall of their vertebrate hosts. | different conceptions exist regarding structure, function, and evolution of the muscles that move the acanthocephalan presoma, including the proboscis, i.e., the usually hooked hold-fast anchoring these endoparasites to the intestinal wall of their vertebrate definitive hosts. in order to clarify the unresolved issues, we carried out a light microscopic analysis of series of semi-thin sections and whole mounts representing the three traditional acanthocephalan classes: archiacanthocephala (macra ... | 2017 | 28233104 |
| intestinal perforation due to macracanthorhynchus hirudinaceus infection in thailand. | the ninth record of a human infection with the acanthocephalan worm macracanthorhynchus hirudinaceus in thailand is reported. the parasite was removed during laparotomy after perforation through the intestine of a 30-year-old woman. | 1989 | 2623433 |
| fatty acids in female macracanthorhynchus hirudinaceus (acanthocephala). | neutral lipids and phospholipids in the body wall, lemnisci and pseudocoel and neutral lipids of fluid found in the "tube" system of the lemnisci and the lacunar system of the body wall of macracanthorhynchus hirudinaceus (acanthocephala) were determined by the technique of thin layer chromatography and gas chromatography (gc). sixteen different fatty acids from nonpolar lipids were identified as follows: 8:0, 10:0, 11:0, 12:0, 13:0, 14:0, 14:1, 16:0, 18:0, 18:1, 18:2 and/or 20:0, 18:3 and/or 20 ... | 1979 | 449626 |
| phylogenetic analyses of endoparasitic acanthocephala based on mitochondrial genomes suggest secondary loss of sensory organs. | the metazoan taxon syndermata (monogononta, bdelloidea, seisonidea, acanthocephala) comprises species with vastly different lifestyles. the focus of this study is on the phylogeny within the syndermatan subtaxon acanthocephala (thorny-headed worms, obligate endoparasites). in order to investigate the controversially discussed phylogenetic relationships of acanthocephalan subtaxa we have sequenced the mitochondrial (mt) genomes of echinorhynchus truttae (palaeacanthocephala), paratenuisentis ambi ... | 2013 | 23044398 |
| coprological tests underestimate macracanthorhynchus hirudinaceus burden in wild boar. | the present study evaluated the limitations of the coprological sedimentation test to assess macracanthorhynchus hirudinaceus infestation in 59 wild boars (sus scrofa) from central spain. the coprological sedimentation test appeared to be a poor predictor of both prevalence of infestation and the real parasite burden due to the high number of false negative results (prevalence was reduced from 61 to 16 %). because of the potential increased risk of this zoonosis, it is suggested that alternative ... | 2016 | 26973238 |
| macracanthorhynchus hirudinaceus: the most common helminthic infection of wild boars in southwestern iran. | a pathological and epidemiological study on macracanthorhynchus hirudinaceus infection on 25 wild boars sus scrofa in southwestern iran was done. overall 24 helminthes (18 female and 6 male) were collected from the intestine of 13 infected wild boars. thus, the prevalence of acanthocephalans among the 25 examined boars was 52 %. pathological evaluation revealed damages caused by the acanthocephalans penetrated in the small intestine tissue. helminthes caused severe necrosis with ulcer and inflam ... | 2016 | 27876983 |
| intestinal helminths of golden jackals and red foxes from tunisia. | forty wild canids including 31 golden jackals (canis aureus linné, 1758) and 9 red foxes (vulpes vulpes linné, 1758) collected between 2008 and 2011 in the northeast, northwest and center of tunisia were necropsied and examined for intestinal helminth parasites. all jackals and foxes were found infected with a prevalence rate of 95% for cestodes, 82.5% for nematodes and 7.5% for acanthocephalans. a total of twelve helminth species were recorded in red foxes: cestodes, dipylidium caninum (55.6%), ... | 2014 | 24938826 |
| helminth infections of wild boars ( sus scrofa) in the bursa province of turkey. | the present study aimed to investigate the status of helminth infections in wild boars in the bursa province of turkey. for this purpose, during 2007-2008, 27 wild boars were necropsied and examined for helminths. individual samples of tongue and diaphragm from 27 necropsied wild boars and an additional 22 tongue and diaphragm samples provided by hunters were examined by trichinoscopy and artificial digestion for trichinella spp. larvae. twenty animals (74%) were identified as being infected wit ... | 2010 | 21114894 |
| element concentrations in the archiacanthocephalan macracanthorhynchus hirudinaceus compared with those in the porcine definitive host from a slaughterhouse in la paz, bolivia. | concentrations of lead and cadmium, determined by electrothermal atomic absorption spectrometry, and concentrations of the elements barium, cadmium, copper, iron, magnesium, manganese, nickel, lead, selenium and strontium, determined by inductively coupled plasma mass spectrometry, in the acanthocephalan macracanthorhynchus hirudinaceus and its porcine final host, sampled at a slaughterhouse in la paz, bolivia, were compared. inductively coupled plasma mass spectrometry analysis revealed that mo ... | 2000 | 10996325 |
| endectocidal efficacies of doramectin in naturally parasitized pigs. | the studies reported here were conducted to investigate the effectiveness of doramectin, given intramuscularly at the rate of 300 micrograms kg-1 of bodyweight, in the treatment of naturally acquired porcine nematodosis and acariasis. twenty pigs demonstrated to be naturally infected with pulmonary and gastrointestinal nematodes were used in one control study, and 22 pigs demonstrated to be naturally parasitized with sarcoptes scabiei var. suis were used in a second study. in both studies, anima ... | 1997 | 9195716 |
| fine structure of anterior terminus of apical sense organ in macracanthorhynchus hirudinaceus (acanthocephala). | the apex of the proboscis of macracanthorhynchus hirudinaceus is crowned by a cone-shaped projection with a small opening in its center. the bottom of this opening is the anterior terminus of the apical sensory organ. when viewed in transverse section, the anterior terminus of this organ appears as a series of distinct layers that encircle a central cone enclosing a complex arrangement of nerves and a sensory support cell duct. four membrane-defined layers encircle the cone area. the outermost g ... | 1989 | 2926595 |