Abstract：
:Guinea pig recipients of anti-tick immune serum or immune peritoneal exudate cells expressed 25 and 30% tick rejection, respectively, when challenged with Amblyomma americanum larval ticks. Previous studies have shown that IgG1 antibodies are responsible for the ability of immune serum to transfer resistance to ticks and to mediate the accompanying, and required, cutaneous basophil response. Since IgG1 antibodies induce mast cell-mediated passive cutaneous anaphylaxis and cutaneous basophil responses by interaction with cell surface Fc receptors, we investigated whether host Fc receptors were involved in the mechanism of antibody-mediated immune resistance to ticks. Recipients of immune serum pretreated intravenously with rabbit IgG failed to express resistance when challenged. In contrast, recipients of immune peritoneal exudate cells similarly pretreated expressed normal resistance. Sheep IgG had no inhibitory effect on the transfer of resistance by either immune serum or peritoneal exudate cells. Furthermore, recipients of immune serum pretreated with the Fc fragment from papain digestion of rabbit IgG failed to express resistance when challenged with ticks. Rabbit Fab and sheep Fc and Fab had no effect on the transfer of resistance by immune serum. Purity of rabbit Fc preparations was verified by the ability to inhibit mast cell-mediated passive cutaneous anaphylaxis due to high-titered IgG1 antiovalbumin antibodies. Rabbit Fab and sheep Fc fractions did not inhibit passive cutaneous anaphylaxis reactions. These findings suggest that immunoglobulin Fc receptors on host cells, such as mast cells and basophils, are required for antibody-mediated immune rejection of ticks from guinea pigs.
journal_name
Exp Parasitoljournal_title
Experimental parasitologyauthors
Brown SJ,Askenase PWdoi
10.1016/0014-4894(85)90079-7subject
Has Abstractpub_date
1985-04-01 00:00:00pages
248-56issue
2eissn
0014-4894issn
1090-2449pii
0014-4894(85)90079-7journal_volume
59pub_type
杂志文章abstract：:The yellow fever mosquito, Aedes aegypti, expresses a gene, Apyrase (Apy), that encodes an ATP-diphosphohydrolase. The product of this gene is a secreted enzyme that facilitates hematophagy by preventing platelet aggregation in the host. Apy gene expression is limited to the cells of the distal-lateral and medial lobe...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1006/expr.1995.1114
更新日期：1995-11-01 00:00:00
abstract：:One of the most fascinating aspects of the Entamoeba histolytica trophozoite ultrastructure is the lack of a typical secretory pathway, particularly of rough endoplasmic reticulum and Golgi system, in a cell with such a high secretory activity. Here, we describe the isolation of amoeba cell structures containing ER-ty...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2005.04.002
更新日期：2005-08-01 00:00:00
abstract：:A limiting dilution assay (LDA) was developed for the quantification of Trypanosoma cruzi in the heart and blood of infected mice. Three groups of swiss mice were injected ip with "CL", "Colombiana," and "Y" strains. At 1-day intervals after infection, blood and the heart were removed. Serial blood dilutions in LIT me...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/0014-4894(90)90099-x
更新日期：1990-02-01 00:00:00
abstract：:Okuda, K., Esteva, M., Segura, E. L., and Bijovsky, A. T. 1999. The cytostome of Trypanosoma cruzi epimastigotes is associated with the flagellar complex. Experimental Parasitology 92, 223-231. Proliferative forms of Trypanosoma cruzi, amastigotes and epimastigotes, have a cytostome, a specialized structure formed by ...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1006/expr.1999.4419
更新日期：1999-08-01 00:00:00
abstract：:Members of the zinc-regulated transporter/iron-regulated transporter-like protein (ZIP) family of proteins transport metal ions across cell membranes. Genes encoding ZIPs are present in the genomes of schistosomes. Here, we describe molecular characterisation of six ZIPs (SjZIPA-F) from Schistosoma japonicum. Quantita...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2011.01.002
更新日期：2011-04-01 00:00:00
abstract：:Immunoelectron microscopy demonstrated the presence of Pf155/RESA in dense granules of Plasmodium falciparum merozoites rather than in micronemes as previously suggested. Since the dense granules are released after the merozoite enters the parasitophorous vacuole, the role of Pf155/RESA in invasion and subsequent step...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/0014-4894(90)90037-d
更新日期：1990-10-01 00:00:00
abstract：:Nematode parasites infect humans and domestic animals; treatment and prophylaxis require anthelmintic drugs because vaccination and sanitation is limited. Emodepside is a more recently introduced cyclooctadepsipeptide drug that has actions against GI nematodes, lungworm, and microfilaria. It has a novel mode of action...
journal_title：Experimental parasitology
pub_type： 杂志文章,评审
doi：10.1016/j.exppara.2011.08.012
更新日期：2012-09-01 00:00:00
abstract：:We have characterized a member of the profilin (PROF) family protein as a common antigen in three pathogens-Babesia bovis (B. bovis), Babesia bigemina (B. bigemina), and Babesia microti (B. microti)-and evaluated its immunogenic and cross-protective properties against a challenge infection with B. microti in BALB/c mi...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2016.03.024
更新日期：2016-07-01 00:00:00
abstract：:Ticks deposit saliva at the site of their attachment to a host in order to inhibit haemostasis, inflammation and innate and adaptive immune responses. The anti-haemostatic properties of tick saliva have been described by many studies, but few show that tick infestations or its anti-haemostatic components exert systemi...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2009.12.013
更新日期：2010-04-01 00:00:00
abstract：:The burden of Plasmodium vivax malaria is huge in India, affecting a large population annually. Recent reports of P. vivax contributing to severe illness and death, makes vaccine research on P. vivax malaria, a high priority. Extent of sequence variation in antigen coding genes is known to be a major hurdle in vaccine...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2013.02.004
更新日期：2013-05-01 00:00:00
abstract：:In vitro anthelmintic activity of crude extracts of the ripe fruits of Hedera helix was investigated on eggs and adult nematode parasites Haemonchus contortus. Aqueous extract of H. helix was also evaluated for in vivo anthelmintic activity at dose of 1.13 and 2.25 g/kg in sheep artificially infected with H. contortus...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2007.01.019
更新日期：2007-08-01 00:00:00
abstract：:Treatment with mannosidase or sialidase completely inhibited chemotactic responses of Caenorhabditis elegans wild type, C. elegans mutants CB1377 (daf-6)X and CB1379 (che-3)I, and Panagrellus redivivus to a source of attractants. Trypsin (EC3.4.21.4) caused a partial reduction in the level of chemoresponse. Normal che...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/0014-4894(84)90044-4
更新日期：1984-12-01 00:00:00
abstract：:Toxoplasma gondii is the etiologic agent of toxoplasmosis. Although the combination of sulfadiazine and pyrimethamine is used as therapy for this disease, these drugs can have serious side effects and its use is limited in pregnancy. Therefore there is a need for new anti-T. gondii drugs in the clinic. Some systems fo...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2008.10.006
更新日期：2009-02-01 00:00:00
abstract：:Amoebae from the genus Acanthamoeba are facultative pathogens of humans and other animals. In humans they most frequently infect the eye causing a sight threatening infection known as Acanthamoeba keratitis (AK), and also cause an often fatal encephalitis (GAE). A mannose-binding protein (MBP) has been identified as b...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2018.07.009
更新日期：2018-09-01 00:00:00
abstract：:Entamoeba histolytica infection is associated with considerable morbidity and mortality in the form of intestinal and extraintestinal amoebiasis. No vaccine is yet available for amoebiasis. Heparan Sulphate Binding Proteins (HSBPs) from E. histolytica were evaluated for immunogenicity and protective efficacy in a Guin...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2013.08.011
更新日期：2013-11-01 00:00:00
abstract：BACKGROUND:Among different leishmanial infections, visceral leishmaniasis (VL) if not treated is the most severe form with high mortality rates. In India, it is caused by the protozoan parasite Leishmania donovani. The therapy of visceral leishmaniasis is limited due to high toxicity, resistance to existing drugs and i...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2018.07.018
更新日期：2018-10-01 00:00:00
abstract：:In the present study, the gene expression of three multidrug resistance (MDR) and resistance-associated protein (MRP) transport proteins or efflux pumps was characterized and the phenotypic evidence for such pumps was demonstrated in cultured Madin-Darby canine kidney (MDCK) cells. A gradient for the fluorescent probe...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2004.03.012
更新日期：2004-03-01 00:00:00
abstract：:Angiostrongylus cantonensis causes eosinophilic meningitis and eosinophilic pleocytosis in humans and is of significant socio-economic importance globally. microRNAs (miRNAs) are endogenous small non-coding RNAs that play crucial roles in gene expression regulation, cellular function and defense, homeostasis and patho...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2011.02.019
更新日期：2011-06-01 00:00:00
abstract：:The schistosomicidal activity of praziquantel (PZQ) is accompanied by a large influx of calcium into the worms, suggesting that this phenomenon could be the source of the observed muscular contraction, surface disruption and eventual death of the parasite. We have incubated live adult schistosomes in a medium containi...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2008.03.012
更新日期：2008-07-01 00:00:00
abstract：:Acanthamoeba infections cause serious humans diseases, such as amoebic keratitis and granulomatous amoebic encephalitis. Melaleuca essential oil has been reported to be effective in treating bacterial and fungal infections. However, the anti-parasitic effects of this essential oil are not well studied. In the present ...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2017.10.014
更新日期：2017-12-01 00:00:00
abstract：:Previous results from our laboratory using pharmacological approaches suggested a role for nitric oxide (NO) in the host defense against the human filarial parasite, Brugia malayi. We sought to determine whether a complementary genetic approach, using mice homozygous for a targeted mutation in the gene encoding induci...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1006/expr.2001.4611
更新日期：2001-05-01 00:00:00
abstract：:A ceramide-anchored glycophosphosphingolipid antigen was isolated from the lipid extract of Leishmania donovani promastigotes. The affinity-purified glycolipid antigen contained galactose, mannose, myo-inositol, phosphate, ceramide, and hexosamine but no sialic acid. The phosphate group was present internally at the c...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/0014-4894(92)90148-4
更新日期：1992-05-01 00:00:00
abstract：:Hepatocytic metaplasia may be induced in hamsters by carcinogens, and associated with aging, diabetes or chronic pancreatitis. By means of histopathologic and immunohistochemic studies, we observed pancreatic hepatocytes in hamsters infected and reinfected with Trypanosoma cruzi. The change was seen in 18 (19%) out of...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/S0014-4894(02)00005-X
更新日期：2002-02-01 00:00:00
abstract：:The water-borne protozoan parasite Cryptosporidium parvum forms oocysts that can persist for long periods of time in the environment, even though the sporozoites inside the oocysts may no longer be viable, making it difficult to assess the associated risk of infection. In this study, we compared the ability of various...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2018.03.002
更新日期：2018-04-01 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：:Murine malarial parasites have long been characterized by their requirement for either antibody-mediated immunity (AMI) or cell-mediated immunity (CMI) for suppression of acute parasitemia, with Plasmodium yoelii reportedly requiring AMI for suppression and P. chabaudi requiring CMI. To assess this characterization in...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1006/expr.1996.4132
更新日期：1997-02-01 00:00:00
abstract：:A Real-time quantitative PCR assay to quantify the Toxoplasma gondii apicoplast was studied. Primers were designed to amplify a 305bp product specific to T. gondii apicoplast. Standard curves were generated for both T. gondii apicoplast DNA and genomic DNA, and were used to compute the relative concentration of apicop...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2009.08.013
更新日期：2009-12-01 00:00:00
abstract：:Chagas disease is characterized by cardiac lesions and a high level of PGE2. Our objective was to investigate the role of PGE2 in cardiac lesions. BALB/c mice were infected with Trypanosoma cruzi (1x10(3) trypomastigote forms) and were treated daily with PBS, meloxicam (0.5 mg/kg) or etoricoxib (0.6 mg/kg). The animal...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/j.exppara.2007.11.003
更新日期：2008-04-01 00:00:00
abstract：:The anthelmintic fenbendazole (FBZ) induces nuclear DNA fragmentation (DF) in intestinal cells of Haemonchus contortus. The DNA fragments had 3'-OH, which suggests involvement of a neutral DNase. To identify candidate DNase(s) involved, DNase activity in H. contortus intestine and other worm fractions was characterize...
journal_title：Experimental parasitology
pub_type： 杂志文章
doi：10.1016/s0014-4894(03)00136-x
更新日期：2003-07-01 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
