| geographic diversity among genotypes of entamoeba histolytica field isolates. | it has been known that only 5 to 10% of those infected with entamoeba histolytica develop symptomatic disease. however, the parasite and the host factors that determine the onset of disease remain undetermined. molecular typing by using polymorphic genetic loci has been proven to aid in the close examination of the population structure of e. histolytica field isolates in nature. in the present study, we analyzed the genetic polymorphisms of two noncoding loci (locus 1-2 and locus 5-6) and two pr ... | 2003 | 12904386 |
| interaction of amoebapores and nk-lysin with symmetric phospholipid and asymmetric lipopolysaccharide/phospholipid bilayers. | amoebapores from protozoan parasite entamoeba histolytica and nk-lysin of porcine cytotoxic lymphocytes belong to the same family of saposin-like proteins. in addition to the structural similarity, amoebapores and nk-lysin are both highly effective against prokaryotic and eukaryotic target cells in that they permeabilize the target cell membranes. here, we have investigated in detail the protein/lipid interaction for the three isoforms of amoebapore and nk-lysin. results obtained from electrical ... | 2003 | 12911324 |
| [behaviour of mast cells in mice in the course of entamoeba histolytica infection by strains] | the present report deals with the behaviour of mast cells in mice in the course of entamoeba histolytica infection by the strains. mice weighing about l6 gm were used for three experimental groups; control, sham infection and experimental. the experimental group was infected with entamoeba histolytica trophozoites directly into cecum by laparotomy. strains isolated from three hepatic amoebic abscess cases were used. mesenteric samples from the region of terminal ileum were fixed in methyl alcoho ... | 1975 | 12913455 |
| clinical trial of tinidazole (fasigyn) in acute and chronic intestinal amoebiasis. | tinidazole (fasigyn), a new drug which is active in vitro and in vivo against entamoeba histolytica, was used in 30 korean patients with acute and chronic intestinal amoebiasis. in aute amoebic dysentry eight of ten patients given tinidazole 150 mg q.i.d. for 10 days were cured clinically and parasitologically. in chronic intestinal amoebiasis, the parasitological cure was obtained 6 out of 10 patients given150 mg q.i.d. for 10 days and 8 out of 10 in patients given 300 mg q.i.d. for 7 days. tin ... | 1974 | 12913475 |
| parasitologial studies of korean forces in south vietnam: ii. a comparative study on the incidences of intestinal parasites. | a survey of intestinal parasites was performed in south vietnam. samples were collected from 717 vietnameses, 1,933 u.s. forces, 433 stool specimens of korean troops in south vietnam. and 114 of korean army patients in home land were also examined as a control. findings were discussed with others and summarized as follows: 1)a parasitic rate, incidence in general, was 44.8 %. 2)koreans in south vietnam showed 82.4 % of infection rate, vietnamese 64.6% and u.s. forces 26.1 %. korean home patients ... | 1970 | 12913523 |
| virulence of entamoeba histolytica according to the strains in korea: iii. amebicial response of antiamoebic agents on several strains of entamoeba histolytica in vitro. | the amebicidal activity of traditional anitiamoebic drug (emetine, carbasone, diodoquin, chloroquine, atabrine, chloramphenicol and tertracycline) and newly appeared chemicals(niridazole, metronidazole and no. 8603 substance) were assayed by in vitro experiment using five strains of human originated e, histolytica. the variety of amebicidal activity of drugs by the strains were discussed. 1)ranges of amoebicidal activity of traditional antiamoebic drugs kept almost similar titers of previous rep ... | 1969 | 12913525 |
| intestinal parasite survey of kyungpook national university hospital patients. | for seven years from 1962 to 1968, fecal specimens of the patients were examined not only for the discovery of intestinal protozoa and helminths, but also to provie data on the incidence of intestinal parasites among the residents of kyungpook province, korea. the formalin-ether sedimentation, lugol solution, and heidenhain's iron-hematoxylin stained films were prepared for the recovery of intestinal parasites. of 2,414 samples of feces examined, 35.7 percent were found to be infected with one o ... | 1971 | 12913615 |
| [prevalence of intestinal parasites in korea] | a survey of intestinal parasites infection among korean people has been carried out during july 1969 to december 1970. a total of 2,250 stool specimens (male 1,101, female 1,146) was collected from all the provinces and seoul city in korea. the specimens were examined routinely by direct fecal smear, zinc sulfate flotation and formalin-ether sedimentation techniques. the results are summarized as follows: 1. of 2,250 specimens examined, l,803(80.l %) were positive for intestinal parasites. 2. th ... | 1971 | 12913622 |
| [detection of parasites and symptoms of parasitic diseases. 2: parasites of the gastrointestinal tract, tissue and organ parasites, ecto- and skin parasites]. | intestinal parasites are giardia lamblia, cryptosporidium parvum, entamoeba histolytica, hookworms, ascaris, tape worms and others. as to organ parasites, their life-threatening courses are pointed out: amebiasis in the intestine, liver, lung and brain, toxoplasmosis in the brain, lung and heart muscle, including the danger for the child of a pregnant woman with an acute infection, west african sleeping sickness with encephalitis, the east african form with polyserositis, south american chagas' ... | 2003 | 12914402 |
| antiprotozoal activity of the constituents of teloxys graveolens. | antiprotozoal activity-guided fractionation of a methanol extract of the aerial parts of teloxys graveolens led to the isolation of one coumarinic acid derivative, melilotoside, and five flavonoids, pinocembrine, pinostrobin, chrysin, narcissin and rutin. among them, melilotoside exhibited the most potent activity toward entamoeba histolytica and giardia lamblia (ic(50) 12.5 and 16.8 micro g/ml, respectively). narcissin showed selectivity against e. histolytlica (ic(50) 17.2 micro g/ml). the res ... | 2003 | 12916068 |
| amoebapores and nk-lysin, members of a class of structurally distinct antimicrobial and cytolytic peptides from protozoa and mammals: a comparative functional analysis. | amoebapores, the pore-forming polypeptides of the protozoan parasite entamoeba histolytica, and nk-lysin, an effector molecule of porcine nk (natural killer) and cytotoxic t cells, belong to the same protein family, the saposin-like proteins. as both types of protein are implicated in the killing of microbes in vivo, it appears that phylogenetically diverse organisms such as amoebae and mammals use similar effector molecules to fulfil a comparable task. however, structural features have led to t ... | 2003 | 12917014 |
| prevalence of amebiasis in inflammatory bowel disease in turkey. | to explore the prevalence of amebiasis in inflammatory bowel disease (ibd) in turkey. | 2003 | 12918132 |
| identification and characterization of two isoenzymes of methionine gamma-lyase from entamoeba histolytica: a key enzyme of sulfur-amino acid degradation in an anaerobic parasitic protist that lacks forward and reverse trans-sulfuration pathways. | to better understand the metabolism of sulfur-containing amino acids, which likely plays a key role in a variety of cell functions, in entamoeba histolytica, we searched the genome data base for genes encoding putative orthologs of enzymes known to be involved in the metabolism. the search revealed that e. histolytica possesses only incomplete cysteine-methionine conversion pathways in both directions. instead, this parasite possesses genes encoding two isoenzymes of methionine gamma-lyase (ec 4 ... | 2003 | 12920135 |
| alcohol consumption, hepatic iron load and the risk of amoebic liver abscess: a case-control study. | it is unknown why most amoebic liver abscess (ala) cases occur in alcohol drinkers. in experimental studies, the presence of 'iron' potentiates the in-vitro growth of entamoeba histolytica (e. histolytica), and is also known to increase its in-vivo invasiveness in animal infections. chronic alcoholism increases the hepatic iron deposition. we hypothesized that ala occurs more commonly in livers with a high iron load as in alcoholics. to test this hypothesis we compared the levels of iron between ... | 2003 | 12924485 |
| intestinal parasitic infestations among children in an orphanage in pathum thani province. | infection caused by intestinal parasites is still a common health problem especially in children from developing countries. orphans are a group of underprivileged population in society. to evaluate the intestinal parasitic infections in children in an orphanage in pathum thani province, thailand, stool samples were collected during a cross-sectional study in april 2001. examination for intestinal parasites were performed by using simple smear, formalin-ether concentration, boeck and drbohlav's l ... | 2003 | 12929999 |
| detection of cryptosporidium amongst diarrhoeic and asymptomatic children in jeddah, saudi arabia. | between the march and may of 2000, stool specimens were collected from children aged <5 in six pre-school crèches and clinics in the jeddah area of saudi arabia. sixty-three (25%) of the children had diarrhoeal disease but the other 190 were asymptomatic. when the stool samples were stained and examined for the oocysts of cryptosporidium spp. and other enteric protozoa, 20 (32%) of the symptomatic children but only nine (4.7%) of the asymptomatic were found to be excreting cryptosporidium oocyst ... | 2003 | 12930614 |
| interaction between chondroitin-6-sulfate and entamoeba histolytica as revealed by force spectroscopy. | we have observed by atomic force microscopy (afm) the amoeba surface and probed the interaction force between entamoeba histolytica and chondroitin-6-sulphate (c6s). we have used several substrates to adhere trophozoites. the best reproducibility in sample preparation was obtained with fibronectin-coated coverslips and when the cells were fixed with paraformaldehyde. the images obtained with the afm showed that the trophozoite exhibits an irregular surface. pseudopods and waving adhesion plaques ... | 2003 | 12932758 |
| entamoeba histolytica: direct pcr-based typing of strains using faecal dna. | | 2003 | 12932765 |
| tumor necrosis factor alpha is a key mediator of gut inflammation seen in amebic colitis in human intestine in the scid mouse-human intestinal xenograft model of disease. | we used entamoeba histolytica infection in human intestinal xenografts to study the roles interleukin-1 (il-1) and tumor necrosis factor alpha (tnf-alpha) in the pathogenesis of amebic colitis. we found that blockade of tnf-alpha reduced inflammation and intestinal damage in amebic infection, while inhibition of il-1 reduced cytokine production but had less marked effects on inflammation and disease. | 2003 | 12933883 |
| [epidemiological, clinical and parasitological data concerning intestinal amebiasis in northern tunisia]. | in order to evaluate the principal characteristics of the intestinal amoebiasis in the north of tunisia, one retrospective study review all cases diagnosed in principal gastroenterologic sections of the hospitals of tunis. twenty height cases of intestinal amoebiasis, 10 of which have an inflammatory bowel disease associated were included. watery stools containing blood and mucus were the most important symptoms (25 cases). the endoscopic exam showed for all the cases non specific lesions. the d ... | 2003 | 12934452 |
| calcium regulation in protozoan parasites. | the calcium ion (ca(2+)) is used as a major signaling molecule in a diverse range of eukaryotic cells including several human parasitic protozoa, such as trypanosoma cruzi, trypanosoma brucei, leishmania spp, plasmodium spp, toxoplasma gondii, cryptosporidium parvum, entamoeba histolytica, giardia lamblia and trichomonas vaginalis. ca(2+) is critical for invasion of intracellular parasites, and its cytosolic concentration is regulated by the concerted operation of several transporters present in ... | 2003 | 12941405 |
| prevalence of endoparasitic infection in children and its relation with cholera prevention efforts in mexico. | to investigate whether increased knowledge and use of public health measures promoted for cholera prevention is reflected in lower prevalence of parasitic infection in households in a community in the state of tamaulipas, mexico, that is close to the border with the united states of america. | 2003 | 12952605 |
| cellular immunity and diarrhoeal disease amongst patients infected with the human immunodeficiency viruses 1 and 2 in zaria, nigeria. | this study was carried out to determine the aetiological agents associated with diarrhoea in nigerians infected with the human immunodeficiency viruses, and to correlate the cellular immunity status with the causes of diarrhoea. the mean duration of diarrhoea was 20.7 weeks. giardia lamblia was the commonest pathogen and was isolated from the stools of 10 patients (25%). isospora belli was isolated in 3 of the patients (7.5%) but in none of the controls. other pathogens isolated include salmonel ... | 2003 | 12956003 |
| protein prenyltransferases: anchor size, pseudogenes and parasites. | lipid modification of eukaryotic proteins by protein prenyltransferases is required for critical signaling pathways, cell cycle progression, cytoskeleton remodeling, induction of apoptosis and vesicular trafficking. this review analyzes the influence of distinct states of sequential posttranslational processing that can be obtained after single or double prenylation, reversible palmitoylation, proteolytic cleavage of the c-terminus and possible reversible carboxymethylation. this series of modif ... | 2003 | 12956414 |
| hepatic amebiasis. | amebiasis can be considered the most aggressive disease of the human intestine, responsible in its invasive form for clinical syndromes, ranging from the classic dysentery of acute colitis to extra-intestinal disease, with emphasis on hepatic amebiasis, unsuitably named amebic liver abscess. found worldwide, with a high incidence in india, tropical regions of africa, mexico and other areas of central america, it has been frequently reported in amazonia. the trophozoite reaches the liver through ... | 2003 | 12959680 |
| prevalence of intestinal parasitic infection among thai people with mental handicaps. | the prevalence of intestinal parasitic infection was studied by stool examination in institutionalized and non-institutionalized thai people with mental handicaps. it was found that the prevalence of infection was much higher in institutionalized (57.6%) than in non-institutionalized people (7.5%). the common parasites found in institutionalized people were trichuris trichiura (29.7%), entamoeba coli (23.1%), giardia intestinalis (8.0%), hymenolepis nana (7.8%), and entamoeba histolytica/dispar ... | 2003 | 12971546 |
| [enteropathogens associated with diarrheal disease in infants (< 5 years old) in a population sample in greater metropolitan criciúma, santa catarina state, brazil]. | enteropathogens were investigated in 94 children with diarrhea and 45 age-matched controls, 0 to 5 years old, attending an outpatient unit in criciúma, santa catarina state, brazil. cryptosporidium (85.1%) topped the list of parasite isolates, followed by entamoeba histolytica (56.4%) and giardia lamblia (4.3%). four samples contained enteropathogenic escherichia coli (4.3%). samonella and shiguella were not detected. only one sample contained rotavirus (1.1%). | 2003 | 12973585 |
| relationship between the number of escherichia coli in stools and the infectivity of rats to entamoeba histolytica in the experimental infection of the amoebae. | | 1952 | 13011901 |
| [isolation of a new strain of entamoeba histolytica and terramycin therapy of amebiasis]. | | 1950 | 13047919 |
| [use of n.n.n. medium (blood agar) in culture of entamoeba histolytica]. | | 1950 | 13047921 |
| the pathogenicity of entamoeba histolytica. | | 1953 | 13076721 |
| nutrition and physiology of endamoeba histolytica. | | 1953 | 13081544 |
| the role of sulfur in the metabolism of endamoeba histolytica. | | 1953 | 13081611 |
| on the influences of constipation upon the experimental infection of entamoeba histolytica in rats. | | 1952 | 13097707 |
| cytochemical differentiation of endamoeba histolytica and endamoeba coli by means of fluorescent antibody. | | 1953 | 13104391 |
| preservation of entamoeba histolytica at -79 degrees c. in the presence of glycerol. | | 1953 | 13105252 |
| [finding of endamoeba histolytica in a sample of potable water from osorno; new technic of investigation]. | | 1953 | 13105744 |
| an investigation into hyaluronidase as a factor in the mechanism of tissue invasion by endamoeba histolytica. | | 1954 | 13114586 |
| immobilization of endamoeba histolytica in vitro by antiserum produced in the rabbit. | | 1953 | 13120895 |
| a stain for endamoeba histolytica in tissue sections. | | 1954 | 13124297 |
| studies on the carbohydrate metabolism of endamoeba histolytica. i. the utilization of glucose. | | 1954 | 13124331 |
| culture experiments with amoebae from laboratory rats. | | 1953 | 13125265 |
| ability of endamoeba histolytica to phagocytose red blood cells. | | 1954 | 13134277 |
| the effect of cold temperatures on the viability of cysts of endamoeba histolytica. | | 1954 | 13138830 |
| in vitro growth and metabolism of endamoeba histolytica. | | 1953 | 13139297 |
| discussion of papers on intestinal amoebae. | | 1953 | 13139299 |
| amebiasis. | | 1953 | 13139391 |
| a survey of the intestinal parasites in the human population in bombay, with special reference to endamoeba histolytica. | | 1953 | 13142666 |
| [longevity of the vegetative form of endamoeba dysenteriae in various media]. | | 1953 | 13149225 |
| observations on the virulence of endamoeba histolytica during prolonged subcultivation. | | 1954 | 13158336 |
| use of fluorescein-tagged antibody to identify cultures of endamoeba histolytica and endamoeba coli. | | 1954 | 13158342 |
| [not available]. | | 1953 | 13159021 |
| lactic and succinic acid formation by endamoeba histolytica in vitro. | | 1954 | 13161965 |
| in vitro acquired resistance and sensitivity of endamoeba histolytica to oxytetracycline. | | 1954 | 13163570 |
| the synergistic amebicidal effect of tetracycline, oxytetracycline and carbomycin on cultures of endameba histolytica. | | 1954 | 13171377 |
| a survey of carriers of intestinal parasites in rajasthan with special reference to endamoeba histolytica. | | 1954 | 13174827 |
| a comparison of strains of entamoeba histolytica with special reference to their pathogenicity. i. comparison of some biological characteristics between indigenous and foreign strains. | | 1953 | 13175381 |
| a comparison of strains of entamoeba histolytica with special reference to the pathogenicity. ii. on the rate of infection and ulcer formation in albino rats which were orally administered with cysts. | | 1953 | 13175382 |
| a comparison of strains of entamoeba histolytica with special reference to the pathogenicity. iii. relation between the size of cysts and the pathogenicity. | | 1953 | 13175383 |
| the presence of endamoeba histolytica in the liver of guinea pigs with experimental intestinal amebiasis. | | 1954 | 13192533 |
| a cytochemical study of entamoeba histolytica. | | 1954 | 13201770 |
| [considerations on emebic dysentery in bulgaria. i. experience with laboratory diagnosis of entamoeba histolytica]. | | 1954 | 13205464 |
| invasion of squamous-cell carcinoma of the cervix uteri by endamoeba histolytica. | | 1954 | 13207255 |
| the prevalence of endamoeba histolytica and other intestinal parasites in a selected urban area. | | 1954 | 13207551 |
| studies on the nutrition of endamoeba histolytica. ii. egg phosphate. | | 1954 | 13210363 |
| carbomycin, a growth-maintaining factor for endameba histolytica cultures. | | 1954 | 13216202 |
| the influence of encystation upon the virulence of entamoeba histolytica to rats. | | 1954 | 13216958 |
| survival of cysts of endamoeba histolytica in human feces under low-temperature conditions. | | 1955 | 13228418 |
| studies on destruction of cysts of endamoeba histolytica. i. establishment of the order of reaction in destruction of cysts of e. histolytica by elemental iodine and silver nitrate. | | 1955 | 13228419 |
| studies on destruction of cysts of endamoeba histolytica. ii. dynamics of destruction of cysts of e. histolytica in water by tri-iodide ion. | | 1955 | 13228420 |
| [vitality of entamoeba dysenteriae cysts outside of host organism]. | | 1954 | 13229397 |
| [intestinal parasites in irrigation water]. | | 1954 | 13230193 |
| cytochemical studies on endamoeba histolytica, with particular reference to polysaccharides. | | 1955 | 13231843 |
| studies on the ameba-bacteria relationship in amebiasis; comparative results of the intracecal inoculation of germfree, monocontaminated, and conventional guinea pigs with entamoeba histolytica. | | 1955 | 13238723 |
| antibiotics and antibiotic combinations in amebiasis. | | 1955 | 13248841 |
| effect of metabolic inhibitors on production of co2 and h2s by endamoeba histolytica. | | 1955 | 13254839 |
| growth factors for endamoeba histolytica. | | 1955 | 13254865 |
| some factors related to entamoeba histolytica growth on rice products in a simple medium. | | 1955 | 13259006 |
| studies on the growth in vitro of strains of entamoeba histolytica. | | 1955 | 13259448 |
| simple aliphatic substrates in the culture of entamoeba histolytica. | | 1955 | 13268805 |
| in vitro approaches to the chemotherapy of amebiasis. | | 1955 | 13269075 |
| the amoebicidal activity of 2-diethanolamino-5-nitropyridine. | | 1955 | 13276598 |
| utilization of glucose by two strains of entamoeba histolytica. | | 1955 | 13277522 |
| cytochemical differentiation of components of entamoeba histolytica; with special reference to variations occurring with different associated organisms. | | 1955 | 13277525 |
| the uptake of yttrium and cerium 144 by viable entamoeba histolytica in culture. | | 1955 | 13277527 |
| intestinal parasitic infections in forsyth county, north carolina. iv. domestic environmental sanitation and the prevalence of entamoeba histolytica. | | 1956 | 13292648 |
| the effect of rabbit antisera on the ability of entamoeba histolytica to phagocytose red blood cells. | | 1956 | 13292650 |
| glucosamine in the culture of entamoeba histolytica with a mixed bacterial flora. | | 1956 | 13292651 |
| dependence of entamoeba histolytica upon associated streptobacillus for metabolism of glucose. | | 1956 | 13294136 |
| [morbidity of amebiasis and carriage of entamoeba histolytica in an epidemic focus; three year observations]. | | 1955 | 13296686 |
| [investigation on pathogenicity of strains of entamoeba histolytica isolated from normal carriers]. | | 1955 | 13296687 |
| [experimental studies on entamoeba histolytica]. | | 1955 | 13300627 |
| correlation between co2 and h2s production by endamoeba histolytica. | | 1956 | 13304082 |
| entamoeba histolytica and other amoebic infections in 503 patients. | | 1956 | 13306964 |
| strain variation in entamoeba histolytica. ii. the effect of serial liver passage on the virulence. | | 1956 | 13322463 |
| strain variation in entamoeba histolytica. iii. the influence of the bacterial flora on virulence to rats. | | 1956 | 13322464 |
| the effect of puromycin against entamoeba histolytica and other intestinal parasites. | | 1956 | 13324448 |
| a method of freeing cultures of entamoeba histolytica from contamination with blastocystis. | | 1956 | 13337906 |
| nutritional requirements of endamoeba histolytica. | | 1956 | 13339774 |
| [effects of isoconessine and neoconessine on endamoeba histolytica in vitro, as compared with conessine and emetine]. | | 1956 | 13353434 |