Publications

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liver involvement in systemic infection.the liver is heavily involved in the vast majority of systemic infections. pathophysiological mechanisms involved in hepatic involvement in generalized sepsis require further study, as does the importance of bacterial infection in the presence of cirrhosis. although parasitic involvement is theoretically dominated by plasmodium spp., in clinical practice entamoeba histolytica, schistosoma spp. and echinococcus spp. infections are far more important. hepatobiliary involvement is also a feature of ...19979471032
[epidemiology of children's intestinal parasitism in the guadalquivir valley, spain].intestinal parasitism represents a public health problem that should be periodically assessed in each region. in the present paper, a study about prevalence of intestinal parasites, has been carried out in children from the natural region of the guadalquivir valley.19979477709
ecto-nucleotide triphosphatase activity in pathogenic and non-pathogenic entamoeba: protection from the cytotoxic effects of extracellular atp.the nucleotide triphosphatase (ntpase) activity of entamoeba species and of entamoeba histolytica strains, was compared. in all cases, with the exception of entamoeba moshkovskii, the enzyme was activated by ca2+ and not by mg2+ and preferentially hydrolysed utp with decreasing activity for atp and gtp. the ntpase activity was associated with both the intracellular and the plasma membrane sulphonylbenzoyl-adenosine (fsba) of trophozoites in which the atp-site was facing externally, as shown by f ...19979670549
entamoeba histolytica and entamoeba dispar in the northeast brazil. 19979674291
does the eosinophil have a protective role in amebiasis?while normal human eosinophils are destroyed in vitro by virulent entamoeba histolytica, notwithstanding the presence of antibodies and complement, activated eosinophils promptly destroy the parasite although dying also at the end of the process. to study the possible in vivo participation of eosinophils in invasive amebiasis, we compared the induction of experimental amebic abscess of the liver (aal) in gerbils (meriones unguiculatus) previously made eosinophilic through toxocara canis antigen ...19979698942
bacterium-assisted invasion of entamoeba histolytica through human enteric epithelia in two-compartment chambers.entamoeba histolytica trophozoites initiate amebiasis by invasion into the enteric mucosa. it is the aim of our experiments to understand how bacteria and leukocytes act during amebic invasion through enteric cell layers. cocultures were established in two-compartment chambers and studied by measurement of transepithelial electrical resistance (ter) and by histological examination. trophozoites caused a decrease in ter that was followed by formation of holes in the enteric cell layer and transfi ...19979702940
parasites and diarrhea. i: protozoans and diarrhea.intestinal parasitism is extremely common, with approximately 70% of all people harboring one or more intestinal parasite. parasitism and diarrhea are both hyperendemic in areas where sanitation is suboptimal. many clinicians assume that the identification of intestinal parasites in patients with diarrhea implies that the parasites are the cause. this approach is frequently misguided. some intestinal parasites such as giardia lamblia and entamoeba histolytica certainly do cause diarrhea. others, ...19979815473
still around and still dangerous: giardia lamblia and entamoeba histolytica.the discovery of new infectious agents often overshadows the continuing impact and importance of well-established organisms. in the case of diarrheal disease, entamoeba histolytica and its complications remain a major cause of morbidity and mortality in developing countries. although it is also present in developing countries, giardia lamblia is a primary cause of waterborne outbreaks of diarrhea in developed countries. persons at risk of developing giardiasis in these countries include backpack ...199710177206
effect of bacterial association on the phenotype and genotype of an entamoeba histolytica clonal population.a several-times-cloned population of entamoeba histolytica trophozoites (clone maviii) was cultured under axenic (maviiiax), monoxenic (maviiimx) and polyxenic (maviiipx) conditions. clones maviiiax and maviiimx presented similar virulence in vitro, but differed in their virulence in vivo, whereas maviiipx trophozoites were neither virulent in vitro or in vivo. the maviii clones maintained their zymodeme and exhibited three unusual glucose phosphate isomerase bands, absent in other e. histolytic ...19979778590
[external quality assessment in coproparasitology in havana city province, cuba]an external quality assessment in coproparasitology was carried out in 77 laboratories from havana city. a questionnaire and ten plastic vials with different intestinal parasites in a small nylon bag, duly sealed, were sent to each laboratory. answers were collected during the 72 hours after delivery. results were analyzed by means of a computer program. the majority of the laboratories (70%) passed the test; the municipalities with the worst scores in the province were lisa, marianao, and haban ...199710886830
a 964 bp repetitive dna in entamoeba histolytica is associated with linear "chromosomal" dnas of variable sizes. 19979032991
identification of putative linear and circular dna molecules in the entamoeba histolytica molecular karyotype. 19979032992
organization of entamoeba histolytica ribosomal and structural genes in pfge. 19979032993
in situ location of the ehredox and 16s rdna genes in entamoeba histolytica trophozoites. 19979032994
molecular cloning of histone h1 in entamoeba histolytica and histone h2b in entamoeba histolytica and entamoeba dispar. 19979032995
detection of a human p53-like protein in e. histolytica. 19979032996
the sequence of a highly homologous gene to hgl2* of entamoeba histolytica that is present and expressed in e.dispar. 19979032997
localization of a retinoblastoma-like protein in entamoeba histolytica. 19979032998
a model for unscheduled dna replication in entamoeba histolytica trophozoites. 19979032999
phenotype variability and genetic polymorphism in entamoeba histolytica clonal populations. 19979033000
possible role of transcribed intergenic sequences in entamoeba histolytica. 19979033001
inducible gene expression in entamoeba histolytica mediated by a tetracycline responsive prokaryotic repressor. 19979033002
establishment of an inducible expression system in entamoeba histolytica. 19979033003
upstream regions of rp l21 genes play a role in regulation of expression at the post-transcriptional level in e. histolytica and e. dispar. 19979033004
control of gene expression in entamoeba histolytica by a cis-acting upstream regulatory element. 19979033005
three conserved cis-acting sequences in the core promoter control gene expression in the protozoan parasite entamoeba histolytica. 19979033006
comparison of the entamoeba histolytica tata-binding protein (tbp) structure with other tbp. 19979033007
structural characterization of the entamoeba histolytica enolase gene promoter. 19979033008
stable transfection of entamoeba histolytica trophozoites by lipofection. 19979033009
the secretory pathway of entamoeba histolytica: characterization and expression of the srp54 gene. 19979033011
the secretory pathway of entamoeba histolytica: characterization and expression of the erd2 gene. 19979033012
characterization of the 5'-flanking region of the ehpgp1 gene of multidrug resistance in entamoeba histolytica. 19979033013
characterization of 5'-flanking sequence of the ehpgp5 gene of multidrug resistance in entamoeba histolytica. 19979033014
putative amplification of the ehpgp genes in entamoeba histolytica emetine-resistant mutants. 19979033015
a revised endosymbiont hypothesis to explain the bacterial origin of amebic glycolytic and fermentation enzymes. 19979033017
isolation and purification of glutathionyl-spermidine and trypanothione from entamoeba histolytica. 19979033018
cloning and expression of e. histolytica gene which includes a putative pdi active site. 19979033019
expression of the alcohol dehydrogenase (adh) domain of entamoeba histolytica ehadh2 enzyme. 19979033020
molecular cloning and biochemical characterization of hexokinases and phosphoglucomutases from entamoeba histolytica and entamoeba dispar. 19979033021
two genes for ppi-dependent phosphofructokinase in entamoeba histolytica. 19979033022
molecular modeling of phosphofructokinase from entamoeba histolytica for the prediction of new antiparasitic agents. 19979033023
subcellular location of the pyruvate: ferredoxin oxidoreductase from entamoeba histolytica. 19979033024
characterization of two e. histolytica proteins that inactivate reactive oxygen species. 19979033025
the detoxicating enzymes of entamoeba histolytica and their detoxifying roles. 19979033026
identification of three entamoeba histolytica intracellular acyl-hydrolase activities. 19979033027
cholesterol requirement and metabolism in entamoeba histolytica. 19979033028
the lipophosphoglycan-like molecules of virulent and avirulent e. histolytica as well as of e. dispar differ in both composition and abundance. 19979033029
preservation of cysteine proteinases and other entamoeba histolytica proteins from autoproteolysis. 19979033030
long-term subcultivation in axenic conditions of entamoeba histolytica in a serum-free media. 19979033031
zinc: interference with the calcium function in entamoeba histolytica. 19979033033
comparative ultrastructural studies of the cell surface and endocytic vacuoles of entamoeba histolytica schaudinn, 1903 and entamoeba dispar brumpt, 1925. 19979033034
a comparison in the ultrastructure of nuclear and extra-nuclear dna of entamoeba histolytica. 19979033036
characterization of cell division cycle regulating genes of entamoeba histolytica by flow cytometry. 19979033037
a morphodynamic study of the structural organization of entamoeba histolytica chromatin during nuclear division. 19979033038
signal transduction mechanisms in entamoeba histolytica trophozoites. 19979033039
rac g, a small gtpase, regulates capping of surface receptors in entamoeba histolytica. 19979033040
partial characterization of g proteins and plc as possible signal transduction elements during adhesion of entamoeba histolytica to fibronectin. 19979033041
camp levels and up-regulation of actin mrna in entamoeba histolytica. 19979033042
molecular cloning of an entamoeba histolytica gene encoding a polypeptide with similarities to actin-binding proteins. 19979033043
the tail domain of entamoeba histolytica myosin ib bind f-actin. 19979033044
proteasome function is required for encystation of entamoeba invadens. 19979033045
stimulation of entamoeba histolytica cyst wall polysaccharide synthesis by three divalent cations. 19979033046
development of monoclonal antibodies directed against cysts of entamoeba histolytica and entamoeba dispar. 19979033048
entamoeba invadens differentiation and entamoeba histolytica cyst-like formation induced by co2. 19979033049
molecular basis of aggressive and defensive functions of entamoeba histolytica. 19979033050
oxygen free radicals produced by entamoeba histolytica are able to cause biological damage. 19979033051
potency of amoebapores compared to that of other membrane-permeating peptides. 19979033052
calcium-independent cytolysis of target cells induced by entamoeba histolytica. 19979033053
adhesive and chemotactic properties of fibronectin and fibronectin-derived fragments on entamoeba histolytica trophozoites. 19979033054
identification and location of the cell-binding domain in the 112 kda adhesin gene of entamoeba histolytica. 19979033055
involvement of the 112 kda adhesin in entamoeba histolytica phagocytosis. 19979033056
transfer of the gal/galnac-specific amebic lectin from trophozoites to frozen sections of human colon mucosa. 19979033058
entamoeba histolytica: partial cloning and expression of cdnas encoding a 30 kda collagen-binding protein. 19979033059
entamoeba histolytica: role of surface proteases on its virulence. 19979033060
cleavage of igg by the neutral cysteine proteinase of e. histolytica. 19979033061
a novel cysteine protease in entamoeba histolytica. 19979033062
membrane acid phosphatase (map) from entamoeba histolytica. 19979033063
secreted entamoeba histolytica acid phosphatase (sap). 19979033064
a 148-kda secretory proteinase from entamoeba histolytica. 19979033065
electron dense granules and the pathogenicity in entamoeba histolytica. 19979033066
differential display of mrnas from entamoeba histolytica during electron dense granules secretion. 19979033067
the cytoskeleton in entamoeba histolytica during edg secretion. 19979033068
selective interaction of entamoeba histolytica with lactobacilli and other intestinal bacteria. 19979033069
erythrophagocytosis by entamoeba histolytica. 19979033070
entamoeba histolytica: kinetics of hemolytic activity, erythrophagocytosis and digestion of erythrocytes. 19979033071
hemoglobinases in entamoeba histolytica hm-1: imss. 19979033072
in vivo pathogenesis of entamoeba dispar. 19979033073
morphological analysis of amebic liver abscess produced by intraperitoneal inoculation of entamoeba histolytica trophozoites in hamsters. 19979033074
early in vivo interaction of entamoeba histolytica trophozoites with hepatic parenchymal and inflammatory cells of hamster. 19979033075
role of nitric oxide in experimental hepatic amebiasis. 19979033076
metabolism of arachidonic acid during amebic abscess formation in hamster. 19979033077
secreted entamoeba histolytica proteins stimulate interleukin-8 mrna expression and protein production in human colonic epithelial cells. 19979033079
cholera toxin increases rat serum and mucosal antibody responses against entamoeba histolytica trophozoites. 19979033080
the galactose adherence lectin of entamoeba histolytica activates primed macrophages for amebicidal activity mediated by nitric oxide. 19979033081
the monocyte locomotion inhibitory factor (mlif) produced by axenically grown entamoeba histolytica fails to affect the locomotion and the respiratory burst of human eosinophils in vitro. 19979033083
production of the monocyte locomotion inhibitory factor (mlif) by axenically grown entamoeba histolytica: synthesis or degradation? 19979033084
inhibition of contact cutaneous delayed hypersensitivity reactions to dnbc in guinea pigs by the monocyte locomotion inhibitory factor (mlif) produced by axenically grown entamoeba histolytica. 19979033085
cross reactivity of mouse monoclonal antibodies to glycoprotein with two different antigens from the outer membrane of entamoeba histolytica. 19979033086
identification of an idiotype on mouse monoclonal antibody directed to a 35 kda glycoprotein from entamoeba histolytica. 19979033087
frequency of hla in adult e.histolytica/e.dispar cyst passer population. 19979033089
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