Abstract:
:This study was aimed to investigate the effects of both parasitism and environmental stress on the growth, reproduction, and survival of Biomphalaria alexandrina snails. Resource allocation strategies may be influenced by both biotic and abiotic factors. Using the planorbid snail B. alexandrina and Schistosoma mansoni, this hypothesis was examined by raising snails fed the same diet under two stressors (infection and Cd exposure). The snails divided into four groups, uninfected, infected, Cd-exposed uninfected, and Cd-exposed infected snails. Egg production, growth, and survival of the snails were monitored over a 9-week period postinfection. Inhibition of snail reproductive activity by parasitism results in increased snail growth in the first week postinfection, termed gigantism, during which the snail is hypothesized to allocate excess energy normally used for reproduction to somatic growth. Infection status and Cd exposure had significant effects on snail growth and reproduction. The infected and Cd-exposed infected snails exhibiting reduced survival relative to snails of other treatments. It was found that parasite development influenced by Cd exposure. Results of this study suggest that energy allocation patterns are context-dependent in B. alexandrina snails, influenced by infection and Cd exposure.
journal_name
Exp Parasitoljournal_title
Experimental parasitologyauthors
Ibrahim MMdoi
10.1016/j.exppara.2005.08.012keywords:
subject
Has Abstractpub_date
2006-01-01 00:00:00pages
31-6issue
1eissn
0014-4894issn
1090-2449pii
S0014-4894(05)00226-2journal_volume
112pub_type
杂志文章abstract::The Gal/GalNAc lectin gene of Entamoeba histolytica is a major amebic virulence protein responsible for interaction with host tissues. We investigated sequence differences in the Gal/GalNAc lectin heavy subunit in three isolates from Bangladesh and one isolate from Georgia, each of which was determined to be genetical...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/s0014-4894(02)00113-3
更新日期:2002-06-01 00:00:00
abstract::Thirty U.S. Trypanosoma cruzi stocks isolated mainly from wild mammals were characterized by multilocus enzyme electrophoresis at 22 genetic loci and random amplification of polymorphic DNA for 10 primers. Two main phylogenetic clusters, separated by large genetic distances, were discriminated by both methods, corresp...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1006/expr.2001.4651
更新日期:2001-10-01 00:00:00
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journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2012.08.002
更新日期:2012-11-01 00:00:00
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journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1006/expr.1996.0081
更新日期:1996-08-01 00:00:00
abstract::Trypanosoma musculi is a hemoflagellate parasite producing a characteristic course of infection in the mouse, terminating in elimination of the parasite from the vascular system with permanent immunity to reinfection. While this elimination is known to require functional T lymphocytes, the role of these cells has rema...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/0014-4894(88)90013-6
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abstract::Molecular characterizations of Cryptosporidium spp. in dairy cattle in industrialized nations have mostly shown a dominance of Cryptosporidium parvum, especially its IIa subtypes in pre-weaned calves. Few studies, however, have been conducted on the distribution of Cryptosporidium species and C. parvum subtypes in var...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2013.09.002
更新日期:2013-11-01 00:00:00
abstract::In order to promote a local Tunisian product, this study was designed to examine, for the first time, the anti-Acanthamoeba activity (Acanthamoeba castellanii Neff) of the essential oils of Tunisian Citrus sinensis peels (Maltese half-blood) and the effect of viroid plant infection on this activity. To do so, three sa...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2017.09.006
更新日期:2017-12-01 00:00:00
abstract::A method is described for the isolation of peroxisomes from mitochondria-enriched fractions obtained from both species of nematodes. The distributions of these organelles are characterized after density gradient centrifugation in sucrose or Percoll by urate oxidase and catalase activities. The possession of peroxisome...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/0014-4894(90)90026-9
更新日期:1990-08-01 00:00:00
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journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2009.10.011
更新日期:2010-09-01 00:00:00
abstract::The kinetics of specific immunoglobulin M, A and IgG subclasses against Echinostoma caproni (Trematoda: Echinostomatidae) were analyzed in serum and intestinal fluid of two host species (Wistar rats and ICR mice) in which the course of the infection markedly differs. In rats, the worms were rapidly expelled, whereas E...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2007.02.008
更新日期:2007-08-01 00:00:00
abstract::In this first report about pinworms peptidases we primarily characterize peptidases released during in vitro maintenance of two common pinworms of laboratory animals -Syphacia muris and Passalurus ambiguus. The peptidase activity obtained using sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) showe...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2010.04.018
更新日期:2010-10-01 00:00:00
abstract::In order to examine the role of IFN-gamma, TNFRp55 and iNOS in inflammatory reaction during toxoplasmosis, IFN-gamma(-/-), TNFRp55(-/-) and iNOS(-/-) mice were experimentally infected with Toxoplasma gondii ME-49 strain. The organs of the mice were evaluated for histology and immunohistochemistry in detection of tissu...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2009.05.011
更新日期:2009-09-01 00:00:00
abstract::Proteasomes are multi-subunit proteases involved in several mechanisms and thought to contribute to the regulation of cellular homeostasis. Here, we report for the first time biochemical evidence for the existence of a ubiquitin-proteasome proteolytic pathway in this parasite. Proteasomes from both cercariae and adult...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2005.01.002
更新日期:2005-04-01 00:00:00
abstract::Mitochondria from a rodent malarial parasite (Plasmodium berghei) were successfully purified by differential centrifugation and 22% Percoll density gradient separation. The purified mitochondria from the erythrocytic stages of the parasite had a density of 1.05 and were found to be heterogeneous by transmission electr...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1006/expr.1993.1070
更新日期:1993-09-01 00:00:00
abstract::Trypanosoma cruzi epimastigotes cultured in vitro were disrupted by successive freezing and thawing and subsequent sonication. The total homogenate was fractionated by differential centrifugation to obtain an enriched plasma membrane fraction. The proteins of subcellular parasite fractions were labeled with 131I and t...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/0014-4894(83)90059-0
更新日期:1983-10-01 00:00:00
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journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1006/expr.1998.4246
更新日期:1998-03-01 00:00:00
abstract::Leishmania donovani, causative organism for visceral leishmaniasis, is responsible for considerable mortality and morbidity worldwide. Generation of drug-resistant variants continue to challenge the chemotherapy, the mainstay to fight the disease. The aim of current study was proteomic profiling of wild type (Ld-Wt) a...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2009.08.003
更新日期:2009-12-01 00:00:00
abstract::The concentration of L-hydroxyproline in the liver of ICR female mice increased rapidly during the 8th to 11th weeks of Schistosoma mansoni infection. Free L-proline concentration began to increase about the 7th week and reached its maximum at the 8th to 9th weeks of the infection, when the granulomatous response to t...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/0014-4894(91)90131-f
更新日期:1991-02-01 00:00:00
abstract::Exponential weight gain equations and growth rates were determined during larval development of Brachymeria lasus reared aseptically on chemically defined media with varying amino acid and glucose levels. The rate of weight gain increased from 0 to 2% dietary glucose and mean growth rate increased from 160 to 260 micr...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/0014-4894(83)90028-0
更新日期:1983-06-01 00:00:00
abstract::Leishmaniasis is one of the most neglected tropical infectious diseases in the world. The emergence of drug resistance and toxicity and the high cost of the available drugs with a lack of new anti-leishmanial drugs highlight the need to search for newer therapies with anti-leishmanial activities. Due to the mesenchyma...
journal_title:Experimental parasitology
pub_type: 杂志文章
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更新日期:2021-01-04 00:00:00
abstract::The asexual development cycle of Plasmodium falciparum, a malarial parasite of humans, has been synchronized in culture by treating ring-stage parasites with aphidicolin, an inhibitor of DNA synthesis. Optimization of both the concentration of drug added to ring stage containing red blood cells and the duration of exp...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/0014-4894(84)90061-4
更新日期:1984-02-01 00:00:00
abstract::Optimization of desferrioxamine B (DFO) delivery for the treatment of malaria was studied in Plasmodium vinckei infected mice. DFO was administered by three different treatment regimens: (1) multiple subcutaneous injections of free DFO, (2) intraperitoneal infusion of free DFO, or (3) multiple subcutaneous injections ...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1006/expr.1998.4282
更新日期:1998-07-01 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::The aim of this study was to evaluate the activity of purinergic enzymes in lymphocytes and cardiac tissue of mice experimentally infected by Trypanosoma cruzi. Twelve female mice were used, divided into two groups (n = 6): uninfected and infected. On day 12 post-infection (PI), the animals were anesthetized and after...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2017.02.002
更新日期:2017-04-01 00:00:00
abstract::The excretory/secretory (ES) proteins of schistosomes play important roles in modulating host immune systems and are regarded as potential vaccine candidates and drug targets. Protein disulfide isomerase (PDI) is an essential enzyme that is involved in disulfide bond formation and rearrangement. In the present study, ...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2014.09.004
更新日期:2014-11-01 00:00:00
abstract::Nitric oxide (NO) has diverse biological functions. Numerous studies have documented NO's biosynthetic pathway in a wide variety of organisms. Little is known, however, about NO production in intraerythrocytic Plasmodium falciparum. Using diaminorhodamine-4-methyl acetoxymethylester (DAR-4M AM), a fluorescent indicato...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2008.04.014
更新日期:2008-09-01 00:00:00
abstract::The sequential changes in the histology in scabietic lesions were investigated for hosts (rabbits) during sensitization and reinfestation with Sarcoptes scabiei. Experimentally infested naive hosts developed heavy scabies infestations but 65% of the hosts showed induced immunity (resistance) to reinfestation. All host...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1006/expr.1994.1005
更新日期:1994-02-01 00:00:00
abstract::It is well known that Anopheles dirus is naturally refractory to rodent malaria parasite, Plasmodium yoelii, but the mechanism is still largely unknown. Here, we found that some P. yoelii taken into An. dirus could develop into oocysts, but oocysts were partially melanized at 7 days and completely melanized at 15 days...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2007.02.013
更新日期:2007-08-01 00:00:00
abstract::The presence of the cytoskeleton of Acanthamoeba castellanii was observed by means of cryo-electronmicroscopy and immunofluorescence techniques. This structure is formed largely by fibers and networks of actin located mainly in cytoplasmic locomotion structures as lamellipodia and as well as in various endocytic struc...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2008.04.004
更新日期:2008-07-01 00:00:00
abstract::Although few species of Sarcocystis are known to use marsupials of the genus Didelphis as definitive host, an extensive diversity of alleles of surface antigen genes (sag2, sag3, and sag4) has been described in samples of didelphid opossums in Brazil. In this work, we studied 25 samples of Sarcocystis derived from gas...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2016.02.008
更新日期:2016-05-01 00:00:00