Abstract:
:Gene expression and its regulation was studied in the rat tapeworm, Hymenolepis diminuta, during strobilization. RNAs extracted from the different developmental stages of the parasite were translated in vitro in a rabbit reticulocyte lysate system. Two-dimensional patterns of the translational products were compared with the 2-dimensional patterns obtained by metabolic labelling with [35S]methionine. The results indicated a post-transcriptional regulation of gene expression during strobilization in this parasite. Gene expression and its regulation was also studied in H. diminuta obtained from 'non-permissive' hosts (mice) and immune suppressed mice and compared with the parasites of the same age obtained from 'permissive' rats hosts. The 2-dimensional patterns of the in vitro translation products, obtained by translating the RNA of different groups of parasites, were compared with the patterns of gene products obtained from parasites using [35S]methionine metabolic labelling. The results indicated a massive post-transcriptional regulation of gene expression, the latter inhibited in parasites obtained from normal mice, but not in immune suppressed mice.
journal_name
Mol Biochem Parasitoljournal_title
Molecular and biochemical parasitologyauthors
Siddiqui AA,Karcz SR,Podesta RBdoi
10.1016/0166-6851(87)90014-4subject
Has Abstractpub_date
1987-08-01 00:00:00pages
19-28issue
1eissn
0166-6851issn
1872-9428pii
0166-6851(87)90014-4journal_volume
25pub_type
杂志文章abstract::Human hookworms (Ancylostoma duodenale, Necator americanus) are a major cause of malnutrition and anemia, particularly in children, and high worm burdens can lead to stunted growth and mental retardation. Mass drug administration (MDA) with benzimidazole (BZ) anthelmintics has the potential to greatly reduce morbidity...
journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/j.molbiopara.2007.07.019
更新日期:2007-12-01 00:00:00
abstract::We have determined the sequence of a cDNA (Tt34c1) encoding a Trypanosoma cruzi trypomastigote stage-specific 85-kDa surface glycoprotein (gp85). Within the peptide sequence of Tt34c1 are two 8-amino acid motifs, Ser-X-Asp-X-Gly-X-Thr-Trp, that are characteristic of bacterial neuraminidases. Analysis of the Tt34c1 seq...
journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/0166-6851(91)90114-l
更新日期:1991-10-01 00:00:00
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journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/j.molbiopara.2015.07.005
更新日期:2015-06-01 00:00:00
abstract::The complete sequence of the gene coding for the S antigen from the Wellcome (West African) strain of Plasmodium falciparum has been obtained. It contains a central repetitive region consisting of 65 copies of a partially degenerate 24 bp sequence, coding for a conserved 8 amino acid repeat (Gly Pro Asn Ser Asp Gly As...
journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/0166-6851(88)90174-0
更新日期:1988-02-01 00:00:00
abstract::Theileria annulata is a tick-transmitted protozoan that causes tropical theileriosis, an often fatal leukoproliferative disorder of cattle. To characterize and identify parasite proteins suitable as diagnostic antigens and/or vaccine candidates, a cDNA clone encoding a macroschizont stage protein was isolated and char...
journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/s0166-6851(02)00013-0
更新日期:2002-04-09 00:00:00
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journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/j.molbiopara.2016.03.010
更新日期:2016-01-01 00:00:00
abstract::Heartworm disease caused by Dirofilaria immitis affects canine and feline hosts. Moreover, the parasite can infect humans, causing pulmonary dirofilariosis. Most affected dogs have patent infections with circulating microfilariae in peripheral blood, although infected dogs sometimes develop occult infections character...
journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/j.molbiopara.2009.03.005
更新日期:2009-08-01 00:00:00
abstract::With the rapid spread of drug-resistant strains of Plasmodium falciparum, the development of new antimalarials is an urgent need. As malaria parasites live in a highly pro-oxidant environment, their anti-oxidant defences have frequently been suggested as candidate drug targets. A key point in such defences is the prod...
journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/j.molbiopara.2010.04.002
更新日期:2010-08-01 00:00:00
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journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/0166-6851(95)02533-2
更新日期:1996-01-01 00:00:00
abstract::The aspartic protease cathepsin D (Clan AA, Family A1) is expressed in the schistosome gut where it plays an apical role in the digestion of hemoglobin released from ingested erythrocytes. In this report, RNA interference approaches were employed to investigate the effects of knockdown of schistosome cathepsin D. Cult...
journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/j.molbiopara.2007.10.009
更新日期:2008-02-01 00:00:00
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journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章,评审
doi:10.1016/j.molbiopara.2007.01.009
更新日期:2007-06-01 00:00:00
abstract::The glycosylphosphatidylinositol (GPI)-anchored variant surface glycoprotein (VSG) of Trypanosoma brucei is the most abundant GPI-anchored protein expressed on any cell, and is an essential virulence factor. To determine what structural features affect efficient expression of VSG, we made a series of mutations in two ...
journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/s0166-6851(03)00055-0
更新日期:2003-05-01 00:00:00
abstract::EP and GPEET procyclins are the major surface glycoproteins of Trypanosoma brucei in the midgut of tsetse flies (Glossina spp.). The procyclin genes are located at the beginning of polycistronic transcription units and are followed by at least one procyclin-associated gene (PAG). The EP/PAG1 locus on one copy of chrom...
journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/j.molbiopara.2006.07.005
更新日期:2006-12-01 00:00:00
abstract::A 25-kb CpFAS1 gene from Cryptosporidium parvum has been engineered and expressed as five individual maltose-binding protein (MBP)-fusion proteins: an N-terminal loading unit, three fatty acyl elongation modules, and a C-terminal reductase. Enzymatic activities of all domains (except the reductase) were individually a...
journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/j.molbiopara.2003.11.011
更新日期:2004-03-01 00:00:00
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journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/0166-6851(90)90007-9
更新日期:1990-02-01 00:00:00
abstract::A wide range of secondary biological functions have been documented for eukaryotic aminoacyl-tRNA synthetases including roles in transcriptional regulation, mitochondrial RNA splicing, cell growth, and chemokine-like activities. The asparaginyl-tRNA synthetase (AsnRS) of the filarial nematode, Brugia malayi, is a high...
journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/j.molbiopara.2012.06.003
更新日期:2012-09-01 00:00:00
abstract::Strongyloides and related genera are advantageous subjects for transgenesis in parasitic nematodes, primarily by gonadal microinjection as has been used with Caenorhabditis elegans. Transgenesis has been achieved in Strongyloides stercoralis and in Parastrongyloides trichosuri, but both of these lack well-adapted, con...
journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/j.molbiopara.2011.06.002
更新日期:2011-10-01 00:00:00
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journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/s0166-6851(99)00008-0
更新日期:1999-03-15 00:00:00
abstract::To further analyze the organization of the nuclear rDNA locus in Trypanosoma cruzi, genomic recombinant plasmid clones were constructed and isolated after hybridization with rRNA molecules as hybridization probes. Approximately 11 kilobase pairs from the cistron were cloned in three recombinant plasmids carrying adjac...
journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/0166-6851(88)90047-3
更新日期:1988-01-15 00:00:00
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journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
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更新日期:2003-09-01 00:00:00
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journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/0166-6851(90)90143-a
更新日期:1990-12-01 00:00:00
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journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/j.molbiopara.2009.02.006
更新日期:2009-07-01 00:00:00
abstract::When the malarial parasite Plasmodium falciparum multiplies in erythrocytes it dramatically increases uptake of essential metabolic precursors (nucleosides, nucleobases and glucose) and export of lactic acid by undefined mechanisms. The first evidence is provided here, by a detailed study in Xenopus laevis oocytes, th...
journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/s0166-6851(98)00024-3
更新日期:1998-05-15 00:00:00
abstract::The glycine cleavage complex (GCV) is a potential source of the one carbon donor 5,10-methylene-tetrahydrofolate (5,10-CH(2)-THF) in the malaria parasite Plasmodium falciparum. One carbon (C1) donor units are necessary for amino acid and nucleotide biosynthesis, and for the initiation of mitochondrial and plastid tran...
journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/j.molbiopara.2010.04.005
更新日期:2010-08-01 00:00:00
abstract::P-glycoprotein gene amplification has been described in several drug-resistant parasitic protozoa. The first P-glycoprotein related gene described in Leishmania was ltpgpA, a gene frequently amplified in arsenite resistant Leishmania. Hybridization experiments indicated that ltpgpA was part of a gene family. In additi...
journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/0166-6851(94)00156-1
更新日期:1994-11-01 00:00:00
abstract::The pfmdr 1 gene encodes a Plasmodium falciparum homologue of the human P-glycoprotein expressed on the surface of the parasite food vacuole. Variation in copy number and specific codon mutations of pfmdr 1 have been implicated in the development of parasite resistance to antimalarial drugs. We describe here the techn...
journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/s0166-6851(96)02822-8
更新日期:1997-04-01 00:00:00
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journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/j.molbiopara.2020.111274
更新日期:2020-05-01 00:00:00
abstract::As a start to understanding the importance of intracellular proteolysis in the protozoon Leishmania mexicana, the parasite proteasome has been purified and characterised. The L. mexicana proteasome is similar to proteasomes from other eukaryotes. It is soluble, and the 20S form has a mass of around 670 kDa, composed o...
journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/s0166-6851(99)00110-3
更新日期:1999-09-20 00:00:00
abstract::Giardia lamblia undergoes surface antigenic variation. The variant-specific surface proteins (VSPs) of isolate WB are cysteine-rich, can vary dramatically in size, contain Cys-X-X-Cys motifs, and are differentially expressed. GS/M(H7) is a Giardia clone from a different isolate which expresses a VSP epitope not found ...
journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/0166-6851(92)90072-r
更新日期:1992-04-01 00:00:00
abstract::Glutamate-cysteine ligase (GCL) is a heterodimer enzyme composed of a catalytic subunit (GCLC) and a modifier subunit (GCLM). This enzyme catalyses the synthesis of γ-glutamylcysteine, a precursor of glutathione. cDNAs of the putative glutamate-cysteine ligase catalytic (Ace-GCLC) and modifier subunits (Ace-GCLM) of A...
journal_title:Molecular and biochemical parasitology
pub_type: 杂志文章
doi:10.1016/j.molbiopara.2014.07.003
更新日期:2014-08-01 00:00:00