Abstract：
:Investigation of protease activities during the transformation of Trypanosoma cruzi epimastigotes into metacyclic trypomastigoes (metacyclo-genesis) revealed three major components with apparent molecular weights of 65, 52, and 40 kDa. The 65-kDa protease is a metacyclic trypomastigote stage-specific protease with an isoelectric point of 5.2 whose activity is inhibited by 1,10-phenanthroline, suggesting that it might be a metalloprotease. The 52-kDa component is also a metalloprotease which is constitutively expressed in epimastigotes and metacyclic trypomastigoes. On the other hand, the 40-kDa component is apparently made up of several isoforms of a cysteine protease which is expressed in much higher levels in epimastigotes than in metacyclic trypomastigote forms. The fact that the 65- and 40-kDa proteases are developmentally regulated suggests that proteases might be important for T. cruzi differentiation. Accordingly, T. cruzi metacyclogenesis is blocked by metallo- and cysteine-protease inhibitors.
journal_name
Exp Parasitoljournal_title
Experimental parasitologyauthors
Bonaldo MC,d'Escoffier LN,Salles JM,Goldenberg Sdoi
10.1016/0014-4894(91)90006-isubject
Has Abstractpub_date
1991-07-01 00:00:00pages
44-51issue
1eissn
0014-4894issn
1090-2449pii
0014-4894(91)90006-Ijournal_volume
73pub_type
杂志文章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：: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：:Chemotherapy of food-borne trematodes relies on two drugs, praziquantel and tricabendazole, and there is growing interest in finding alternative therapies. Plant oil extracts have long been used in traditional Chinese medicine as sources of bioactive compounds with antiparasitic activity. Species of the genus Echinost...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2017.01.003
更新日期：2017-03-01 00:00:00
abstract：:The prevalence of Cryptosporidium and microsporidia in feral horses, which have minimal contact with livestock and humans, is not currently known. We report the findings of a study on Cryptosporidium and microsporidia in 34 Mustangs and 50 Chincoteague ponies in the USA. Fecal samples were screened for presence of Cry...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2015.12.004
更新日期：2016-03-01 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：:An NADP-linked glutamate dehydrogenase (EC 1.4.1.4) was found in the soluble fraction of Trichomonas vaginalis. Its molecular weight was about 230,000 (gel filtration). The enzyme, partially purified by diafiltration and hydroxyapatite column chromatography, was heat stable (1 hr at 57 C). It catalyzed both the aminat...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/0014-4894(88)90007-0
更新日期：1988-10-01 00:00:00
abstract：:Toxoplasma gondii and the related Apicomplexan protozoan pathogens, Plasmodium, Cryptosporidium, and Eimeria, are obligate intracellular parasites which cause severe disease in their hosts. The recent development of transient transfection of Toxoplasma permits the development of strategies utilizing "reverse genetics"...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1006/expr.1995.1006
更新日期：1995-02-01 00:00:00
abstract：:Monoclonal antibodies (mAb) directed against Schistosoma mansoni tropomyosin isoform, SMTM (Xu et al. Experimental Parasitology 69, 373-392, 1989), were used to test for cross-reactivity with Biomphalaria glabrata antigens. One mAb (1F10) recognized antigens of 39, 41, and 80 kDa in a snail head/foot antigen preparati...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1006/expr.1994.1028
更新日期：1994-05-01 00:00:00
abstract：:An increased level of plasma corticosterone is one manifestation of severe environmental or physiologic stress. The stress response mediated by the hypothalamic-pituitary-adrenal axis is already known to suppress immunoglobulin production and to impair immune function, but there are few studies relating stress and pla...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2007.05.008
更新日期：2007-12-01 00:00:00
abstract：:In March 2010, a 35 year-old HIV/AIDS female patient was admitted to hospital to start treatment with Highly Active Antiretroviral Therapy (HAART) since during a routine control a dramatic decrease in the CD4(+) levels was detected. At this stage, a nasal swab from each nostril was collected from the patient to includ...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2014.02.014
更新日期：2014-11-01 00:00:00
abstract：:In the present study, samples representing Orientobilharzia turkestanicum from cattle, sheep, cashmere goat and goat in Heilongjiang Province, China, were characterized and grouped genetically by sequences of internal transcribed spacer (ITS, including ITS-1 and ITS2) and 28S ribosomal DNA (28S rDNA). The ITS and 28S ...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2008.10.012
更新日期：2009-02-01 00:00:00
abstract：:Excystation of Giardia lamblia entails differentiation of dormant cysts into parasitic trophozoites. Despite its importance for infection, this transformation is not understood at the cellular or molecular levels. In these studies, we report that excystation entails detection of environmental stimuli across the tough ...
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：:Resistance of human pathogens like Leishmania to drugs is a growing concern where the multidrug-resistant phenotype renders chemotherapy ineffective. The acquired resistance of Leishmania to antimony has promoted intense research on the mechanisms involved but the question has not been resolved yet. In this study we h...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2017.02.019
更新日期：2017-05-01 00:00:00
abstract：:The present study aimed to evaluate the acaricidal efficacy of fluazuron (2.5 mg/kg), administered as a pour-on, in comparison to an injectable formulation containing fluazuron (1.6 mg/kg) + ivermectin (0.63 mg/kg), against Rhipicephalus (Boophilus) microplus in naturally and experimentally infested cattle. Two studie...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2015.02.004
更新日期：2015-06-01 00:00:00
abstract：:A polymerase chain reaction (PCR-based) assay was evaluated for detection of Trypanosoma evansi DNA in experimentally infected mice and naturally infected camels, sheep and goats using the set of primers TBr(1) & TBr(2) that amplified 164 bp DNA fragment. The results revealed that PCR-based assay was able to detect T....
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2013.02.003
更新日期：2013-05-01 00:00:00
abstract：:Isospora suis is an intestinal protozoan parasite in pigs. The 2-3 weeks old piglets are most often infected by I. suis because their immune system is not fully developed. The infection exhibits clinical features such as diarrhea and dehydration and seriously affects the economic interests of farmers. The traditional ...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2016.03.001
更新日期：2016-06-01 00:00:00
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：:With the use of [3H]heparin, we recently demonstrated that Leishmania donovani promastigotes express a cell-surface receptor that is specific for the glycosaminoglycan heparin (Mukhopadhyay et al. 1989, The Biochemical Journal, 264, 517-525.). Treatment of the parasite with trypsin abolishes 75-90% of this [3H]heparin...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/0014-4894(90)90007-y
更新日期：1990-07-01 00:00:00
abstract：:Previous studies have shown that intradermally (ID) injected Brugia pahangi L3 s migrate through various tissues and into the lymphatics of gerbils in a distinct pattern. Excretory/secretory products (ES) produced at the time of invasion of B. pahangi are likely to be important in this early migration phase of the par...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2013.08.007
更新日期：2013-10-01 00:00:00
abstract：:Indirect immunocytochemistry, in conjunction with confocal scanning laser microscopy and electron-microscopic immunogold labeling, has been used to localize neuropeptide and 5-hydroxytryptamine (5-HT) immunoreactivities (IRs) in the plerocercoid (scolex and surrounding blastocyst) of the trypanorhynch tapeworm, Grillo...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1006/expr.1994.1103
更新日期：1994-11-01 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：:Infection with Leishmania infantum causes the disease visceral leishmaniasis (VL), which is a serious clinical and veterinary problem. The drugs used to treat canine leishmaniasis (CanL) do not cause complete parasite clearance; they can be toxic, and emerging drug resistance in parasite populations limits their clini...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2020.108033
更新日期：2021-01-01 00:00:00
abstract：:A Schistosoma mansoni G-protein coupled receptor (SmGPCR) was previously cloned and shown to be activated by the biogenic amine, histamine. Here we report a first investigation of the receptor's subunit organization, tissue distribution and expression levels in different stages of the parasite. A polyclonal antibody w...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2009.01.001
更新日期：2009-05-01 00:00:00
abstract：:Entamoeba histolytica programmed cell death (PCD) induced by G418 is characterized by the release of important amounts of intracellular calcium from reservoirs. Nevertheless, no typical caspases have been detected in the parasite, the PCD phenotype is inhibited by the cysteine protease inhibitor E-64. These results st...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2015.10.005
更新日期：2015-12-01 00:00:00
abstract：:Clonorchis sinensis is a fish-borne trematode endemic to East Asia, which infects over 35 million people globally. In the study described here, we developed a nested polymerase chain reaction (PCR) method for the specific and reliable detection of C. sinensis. The primers designed from the nucleotide sequence data der...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2006.09.010
更新日期：2007-03-01 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：:The in vitro growth of Plasmodium falciparum was reduced by 35 and 43% through high concentrations (5 mmole/liter) of magnesium in RPMI medium and magnesium-free medium, respectively, after 48 hr, whereas no significant inhibition could be observed under these conditions after 24 hr cultivation in the respective mediu...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1006/expr.1995.1023
更新日期：1995-03-01 00:00:00
abstract：:Traditional classification of Demodex mites by hosts and phenotypic characteristics is defective because of environmental influences. In this study, we proposed molecular identification of four phenotypes of two human Demodex species based on mitochondrial cox1 fragments for the first time. Mites collected from suffer...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2014.04.003
更新日期：2014-07-01 00:00:00
abstract：:In rats, CL-Brener clone caused high mortality, severe acute myocarditis, and myositis that subsided completely in surviving animals. Accordingly, no parasite kDNA could be amplified in several organs after 4 months. The monoclonal JG strain caused null mortality, acute predominantly focal myocarditis, discrete and fo...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/s0014-4894(03)00119-x
更新日期：2003-05-01 00:00:00
abstract：:M17 leucine aminopeptidase (LAP) is one of a family of metalloexopeptidases, of which short peptide fragments are cleaved from the N-terminals. In this study, the full length of cDNA encoding Fasciola gigantica LAP (FgLAP) was cloned from adult parasites. The amino acid sequences of FgLAP showed a high degree of ident...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2012.04.008
更新日期：2012-07-01 00:00:00
