Abstract:
:Allelic variation in the Plasmodium falciparum merozoite surface protein 1 (MSP1) gene is expressed as an association of allelic types in variable blocks. In this study, a PCR strategy that can detect 24 different MSP1 association types was used to investigate allelic variation in the MSP1 gene. We identified 236 distinct association type clones in 136 wild isolates collected from southern Vietnam, analysis of which revealed that (1) recombination between two representative allelic types in the central part of the MSP1 gene did not exist, (2) frequency distribution of MSP1 association types did not differ in different population groups, and (3) particular MSP1 association types were predominant. Statistical analysis for the association of allelic types indicated significant, nonrandom associations between blocks 4 and 6 but not between blocks 2 and 4, and 2 and 6. These results suggest that selection operates in favor of particular MSP1 association types. In addition, direct sequencing of 31 isolates confirmed reported sequence substitutions in the C-terminal 19-kDa Cys-rich region of MSP1, supporting a notion of limited variations in this region, a strong vaccine candidate molecule.
journal_name
Exp Parasitoljournal_title
Experimental parasitologyauthors
Kaneko O,Kimura M,Kawamoto F,Ferreira MU,Tanabe Kdoi
10.1006/expr.1997.4147subject
Has Abstractpub_date
1997-05-01 00:00:00pages
45-57issue
1eissn
0014-4894issn
1090-2449pii
S0014-4894(97)94147-3journal_volume
86pub_type
杂志文章abstract::A Taenia hydatigena model was used to assess the effect 0, 7, 14, 21, and 28 days of ensilation of minced potato on viability of tapeworm eggs. For infection of lambs, 2,000 T. hydatigena eggs were ensiled for 0, 7, 14, 21 and 28 days in minced potato at 22°C and fed to recently weaned lambs (29.9±0.76 kg). At slaught...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2013.01.003
更新日期:2013-04-01 00:00:00
abstract::Giardia lamblia is the most commonly detected parasite in the intestinal tract of humans and other mammals causing giardiasis. Giardia presents several cytoskeletal structures with microtubules as major components such as the ventral adhesive disk, eight flagella axonemes, the median body and funis. Many drugs have al...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2005.01.007
更新日期:2005-05-01 00:00:00
abstract::It is generally accepted that a majority of individuals infected by Entamoeba histolytica do not develop symptomatic disease. However, the parasite and the host factors contributing to the development of the disease, remain undetermined. It is also unclear why certain individuals develop extra-intestinal amebiasis wit...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2005.02.015
更新日期:2005-07-01 00:00:00
abstract::Nine of 18 chimpanzees inoculated with 250 infective third-stage larvae (L3) each developed patent (i.e., positive for microfilariae) Onchocerca volvulus infection. Four of 6 infected chimpanzees that received 200 micrograms/kg ivermectin at 28 days postinfection (pi) became patent, whereas, when ivermectin was given ...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/0014-4894(92)90199-k
更新日期:1992-06-01 00:00:00
abstract::We show that a purified preparation of the prominent tartrate-resistant acid phosphatase (E.C.3.1.3.2), isolated from the external surface of the intracellular parasite Leishmania donovani (promastigote form), inhibits toxic oxidative metabolite production of neutrophils. Preincubation of a neutrophil suspension (2.5 ...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/0014-4894(85)90039-6
更新日期:1985-12-01 00:00:00
abstract::Free Living Amoebae (FLA) are considered ubiquitous. FLAs may infect various biological organisms which act as reservoir hosts. Infected freshwater fishes can pose a public health concern due to possible human consumption. This study aims to identify possible pathogenic FLAs present in freshwater fishes. Seventy five ...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2017.09.009
更新日期:2017-12-01 00:00:00
abstract::Partial nucleotide sequences of large subunit ribosomal RNA (LSU rRNA) coding genes of Theileria parva and T. taurotragi were determined. Alignment of the T. parva and T. taurotragi sequences revealed species-specific regions within the LSU rRNA genes. A major species-variable region, located between the first and sec...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1006/expr.1995.1012
更新日期:1995-02-01 00:00:00
abstract::In the intestinal tract of fifth instars of the hematophagous reduviid bugs Rhodnius prolixus and Triatoma infestans blood ingestion induced an initial decrease of the concentration of the respective symbiotic bacteria Rhodococcus rhodnii and Nocardia sp. and then within 10 days a 15- or 18-fold increase of the total ...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1006/expr.2001.4653
更新日期:2002-01-01 00:00:00
abstract::The expression and biological role of actin during the Trypanosoma cruzi life cycle remains largely unknown. Polyclonal antibodies against a recombinant T. cruzi actin protein were used to confirm its expression in epimastigotes, trypomastigotes, and amastigotes. Although the overall levels of expression were similar,...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2010.08.003
更新日期:2011-01-01 00:00:00
abstract::Tapeworms Taenia solium and Taenia saginata are the causative agents of taeniasis/cysticercosis. These are diseases with high medical and veterinary importance due to their impact on public health and rural economy in tropical countries. The re-emergence of T. solium as a result of human migration, the economic burden...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2016.10.015
更新日期:2016-12-01 00:00:00
abstract::Recombinant allergens are currently the best option for serodiagnosis of human anisakiasis in terms of sensitivity and specificity. However, previous reports showed high rates of anisakiasis patients who were negative to Ani s 7 and especially to Ani s 1. Recently, Anisakis haemoglobin was described as a major allerge...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2017.08.010
更新日期:2017-10-01 00:00:00
abstract::Complex life cycle parasites can manipulate the behavior of intermediate hosts in order to reduce their fitness and increase the chance of completing life cycle. In order to understand the effects of the trematode parasites of the genus Clinostomum on host fish Loricariichthys platymetopon, a filmed experiment was car...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2020.107916
更新日期:2020-09-01 00:00:00
abstract::A monoclonal antibody was generated against the large subunit of Schistosoma japonicum calpain to study the localization and possible function of the molecule in vivo. Mice were immunized with recombinant S. japonicum calpain and polyclonal antisera and a monoclonal antibody specific to schistosome calpain was obtaine...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2004.11.001
更新日期:2005-01-01 00:00:00
abstract::Living Leishmania amazonensis amastigotes were incubated with radioiodinated N-benzyloxycarbonyl-L-tyrosyl-L-alanyl diazomethane (Z-Tyr-AlaCHN2), an irreversible inhibitor of mammalian cathepsins B and L. Parasite lysates were subjected to electrophoresis in gelatin-containing sodium dodecyl sulfate-acrylamide gels to...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/0014-4894(91)90066-6
更新日期:1991-11-01 00:00:00
abstract::Serine proteases have been identified as important molecules that are involved in many parasitic infections, and these molecules have also been suggested to play important roles in Trichinella spiralis infections. In the present study, the antigenic serine protease gene Ts-ADSp-7, which was screened from a cDNA librar...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2018.09.009
更新日期:2018-12-01 00:00:00
abstract::We investigated the effects of the anti-malarials mefloquine and primaquine against the juvenile and adult life stages of Schistosoma mansoniin vitro. Cercariae were incubated with 0.5 μg/ml, 1 μg/ml and 2 μg/ml mefloquine or primaquine and with 1 μg/ml praziquantel for 12h. Schistosomula, pre-adults and adults were i...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2010.08.008
更新日期:2011-01-01 00:00:00
abstract::To better control gastrointestinal nematode infections in humans and animals, it is important to understand the strategies used by these parasites to modulate the host immune system. In this regard, molecules released by parasites have been attributed crucially important roles in host-parasite negotiations. We charact...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2017.05.003
更新日期:2017-07-01 00:00:00
abstract::A series of novel hybrid 4-aminoquinoline 1,3,5-triazine derivatives was synthesized in a five-steps reaction and evaluated for their in vitro antimalarial activity against chloroquine-sensitive (3D7) and chloroquine-resistant (RKL-2) strains of Plasmodium falciparum. Entire synthetic derivatives showed higher antimal...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2015.06.016
更新日期:2015-10-01 00:00:00
abstract::Toxocara canis is a dog helminth which causes visceral larva migrans (VLM) when infecting humans as a larva. The infection is demonstrated by detecting IgG antibodies against excretory-secretory larval antigens (ESLA) in serum by ELISA. The production of ESLA involves the collection of adult worms from dog puppy stool...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2008.03.006
更新日期:2008-07-01 00:00:00
abstract::The cDNA of a Schistosoma japonicum myophilin-like protein was cloned, sequenced, and expressed in Escherichia coli as a recombined protein (rSj myophilin-like protein), and the protein was purified by affinity chromatography. The deduced amino acid sequences of the Sj myophilin-like protein showed significant homolog...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2008.01.017
更新日期:2008-05-01 00:00:00
abstract::Resistance and sensitivity to normal human serum (NHS) of Trypanosoma congolense, a parasite believed to cause disease in animals only, were investigated in vivo as well as in vitro. Our results indicate that like Trypanosoma brucei, T. congolense can be grouped into three different phenotypes according to its resista...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/s0014-4894(03)00032-8
更新日期:2002-10-01 00:00:00
abstract::A thrombin (E.C. 3.4.21.5) inhibitor, savignin, was isolated from the salivary glands of Ornithodoros savignyi by a combination of size exclusion, anion-exchange, and reversed-phase chromatography. The inhibitor has a molecular mass of 12,430.4 Da as determined by electrospray mass spectrometry. The behavior of savign...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1006/expr.1999.4448
更新日期:1999-10-01 00:00:00
abstract::Calfluxin (CaFl), one of the gonadotropic hormones of Lymnaea stagnalis, stimulates the influx of Ca2+ into the mitochondria of the cells of the albumen gland, one of the accessory sex organs of the snail. This effect is suppressed in glands of noninfected snails by an agent (schistosomin) present in the hemolymph of ...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/0014-4894(88)90110-5
更新日期:1988-02-01 00:00:00
abstract::Both the Weybridge strain and a mixture of six laboratory and field strains of Eimeria maxima have been attenuated by selection for early maturation of oocysts during serial passage in chickens. The prepatent times of the resultant precocious lines produces after selection were reduced from approximately 120 hr to les...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/0014-4894(86)90152-9
更新日期:1986-04-01 00:00:00
abstract::Schistosoma mansoni cercariae are stimulated by 2-tetradecenoic acid (TDA) to penetrate agar substrates. TDA simultaneously causes tegumental transformation similar to that seen when cercariae transform to schistosomula, reduces the Cercarienhüllen reaction in immune human serum, and reduces larval tolerance to water....
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/0014-4894(84)90037-7
更新日期:1984-10-01 00:00:00
abstract::The goal of this study was to compare two parasitological diagnostic techniques, such as by Micro-Haematocrit Centrifugation Technique (MHCT) and Direct Microscopic Examination (DME) with a serological method (iELISA), and a molecular procedure PCR, in rabbits experimentally infected with Trypanosoma evansi, in order ...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2011.02.010
更新日期:2011-05-01 00:00:00
abstract::Though parasite cyclophilins are promising new drug targets, Eimeria tenella cyclophilins have not been characterized yet. Here, we describe an 89kDa cyclophilin, designated EtCYP89. It is expressed throughout the developmental cycle of E. tenella, both in the intracellular stages in chicken and in extracellular sporu...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2007.07.013
更新日期:2008-02-01 00:00:00
abstract::The role of oxidative stress in the pathogenicity of acanthamoebiasis is an important aspect of the intricate and complex host-parasite relationship. The aim of this experimental study was to determine oxidative stress through the assessment of lipid peroxidation product (LPO) levels and antioxidant defense mechanism ...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2018.09.002
更新日期:2018-10-01 00:00:00
abstract::Standardization of the methods for extraction of DNA from sand flies is essential for obtaining high efficiency during subsequent molecular analyses, such as the new sequencing methods. Information obtained using these methods may contribute substantially to taxonomic, evolutionary, and eco-epidemiological studies. Th...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2017.04.010
更新日期:2017-06-01 00:00:00
abstract::Amebiasis contributes to approximately 50 million cases of life-threatening dysentery worldwide. Comparison of the lectins from Entamoeba histolytica (pathogenic) and Entamoeba dispar (nonpathogenic) was undertaken to elucidate the differential roles of this molecule in invasion versus colonization. Surface lectin was...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1006/expr.2001.4672
更新日期:2001-12-01 00:00:00