Echinococcus granulosus: specificity of amino acid transport systems in protoscoleces.

abstract：:Intestinal diarrheagenic polyparasitic infections are among the major public health concerns in developing countries. Here we examined stool specimens by microscopy, DNA dot blot and polymerase chain reaction (PCR) to evaluate the co-infection of four principal protozoans among amoebic dysentery cases from Northeast I...

journal_title：Parasitology

authors： Nath J,Hussain G,Singha B,Paul J,Ghosh SK

更新日期：2015-09-01 00:00:00

abstract：:A procedure is described for the isolation of sub-cellular fractions from bloodstream forms of Trypanosoma brucei. The method leaves intact most of the nuclei, mitochondria and microbodies. All the fractions have been chemically characterized and tested for 10 enzymatic markers. About 5% of total cell protein was isol...

journal_title：Parasitology

authors： Rovis L,Baekkeskov S

更新日期：1980-06-01 00:00:00

abstract：:An ultrastructural study has been performed on radiation-attenuated parasites fixed in situ during their extended stay in the lungs. At day 7 post-infection all parasites were located within blood vessels. In contrast to normally migrating parasites, at days 13 and 21 post-infection the majority of radiation-attenuate...

journal_title：Parasitology

authors： Mastin A,Bickle QD,Wilson RA

更新日期：1985-08-01 00:00:00

abstract：:The worldwide economic impact of Neospora caninum infection has caused the development of effective vaccines to become one of the main goals in the field of neosporosis research. In this study, the protection conferred by antigens from inactivated whole tachyzoites (TZ) and a tachyzoite-bradyzoite mixture (TZ-BZ) of N...

journal_title：Parasitology

authors： Rojo-Montejo S,Collantes-Fernández E,Rodríguez-Marcos S,Pérez-Zaballos F,López-Pérez I,Prenafeta A,Ortega-Mora LM

更新日期：2011-09-01 00:00:00

abstract：:A comparison has been made of the responses of random-bred CFLP and inbred NIH mice to infection with Trichuris muris. Random-bred mice showed greater variation in worm burdens and less uniformity in worm expulsion. Irradiation prior to infection reduced variation, but did not increase the mean level of infection abov...

journal_title：Parasitology

authors： Wakelin D

更新日期：1975-08-01 00:00:00

abstract：:Blastocystis SSU-rDNA sequence data from 317 captive and free-living non-human primates (NHPs) representing 30 genera of apes, Old and New World (OW and NW) monkeys and prosimians were analysed to investigate subtype (ST) and allele distribution among hosts. Excluding 20 mixed ST infections, 27% of the sequences belon...

journal_title：Parasitology

authors： Alfellani MA,Jacob AS,Perea NO,Krecek RC,Taner-Mulla D,Verweij JJ,Levecke B,Tannich E,Clark CG,Stensvold CR

更新日期：2013-07-01 00:00:00

abstract：:This cross-sectional study aimed to determine the prevalence and risk factors of S. stercoralis infection among 1142 Orang Asli primary schoolchildren in six different states of Peninsular Malaysia. Fecal samples were examined using direct smear, formalin-ether sedimentation (FES), agar plate culture (APC) and PCR tec...

journal_title：Parasitology

authors： Al-Mekhlafi HM,Nasr NA,Lim YAL,Elyana FN,Sady H,Atroosh WM,Dawaki S,Anuar TS,Noordin R,Mahmud R

更新日期：2019-10-01 00:00:00

abstract：:Populations of hosts vary extensively in the types and numbers of parasites that the average individual contains. Understanding the factors that lead to this variation is an important goal for parasite ecologists. We characterized patterns of helminth component community structure in whitefish collected from a cluster...

journal_title：Parasitology

authors： Goater CP,Baldwin RE,Scrimgeour GJ

更新日期：2005-11-01 00:00:00

abstract：:The transmission-blocking monoclonal antibody 13.1, which recognizes the ookinete surface antigen Pbs21 of Plasmodium berghei, and an IgG2a isotype control antibody 26.37 were purified by caprylic acid and ammonium sulphate precipitation. Fab fragments were prepared by papain digestion. IgG but not Fab from antibody 1...

journal_title：Parasitology

authors： Ranawaka GR,Alejo-Blanco AR,Sinden RE

更新日期：1994-07-01 00:00:00

abstract：:Hybridization events between Schistosoma species (Digenea, Platyhelminthes) are reported with increasing frequency, largely due to improved access to molecular tools. Nevertheless, little is known about the distribution and frequency of hybrid schistosomes in nature. Screening for hybrids on a large scale is complicat...

journal_title：Parasitology

authors： Boon NAM,Van Den Broeck F,Faye D,Volckaert FAM,Mboup S,Polman K,Huyse T

更新日期：2018-04-01 00:00:00

abstract：:The host recognition and invasion process of Myxobolus cerebralis actinospores (triactinomyxon, TAM) was studied on a genetic level. A small-scale in vitro assay was developed to activate a large number of TAMs simultaneously, and to monitor the host invasion in the absence of live fish. The transcriptomes of non-acti...

journal_title：Parasitology

authors： Eszterbauer E,Kallert DM,Grabner D,El-Matbouli M

更新日期：2009-04-01 00:00:00

abstract：:Biozzi mice of Selections 1 and 3, each exhibiting either high- or low-antibody responses to a wide range of antigens, were exposed to primary, secondary and tertiary infections of the nematode, Nematospiroides dubius. The course of these infections was followed by monitoring egg output and by examination of the worm ...

journal_title：Parasitology

authors： Jenkins DC,Carrington TS

更新日期：1981-04-01 00:00:00

abstract：:Renal infections by parasitic ciliates were studied in adult snails of Helix aspersa aspersa and Helix aspersa maxima collected from 2 mixed rearing system-based heliciculture farms located in Galicia (NW Spain). The occurrence of ciliates was also examined in slugs (Deroceras reticulatum) invading the greenhouses whe...

journal_title：Parasitology

authors： Segade P,Kher CP,Lynn DH,Iglesias R

更新日期：2009-06-01 00:00:00

abstract：:Plant cysteine proteinases (CPs) from Carica papaya kill parasitic and free-living nematodes in vitro by hydrolysis of the worm cuticle, a mechanism that is different to all commercially available synthetic anthelmintics. We have developed a cheap and effective, rapid-throughput Caenorhabditis elegans-based assay for ...

journal_title：Parasitology

authors： Phiri AM,DE Pomerai DI,Buttle DJ,Behnke JM

更新日期：2017-04-01 00:00:00

abstract：:An apparatus for artificial feeding of Rhipicephalus appendiculatus nymphae was modified to improve feeding performance. Heparinized blood was supplied above a treated artificial membrane while the ticks attached below on its undersurface. The feeding apparatus was incubated at 37 degrees C in an atmosphere of 3% CO2 ...

journal_title：Parasitology

authors： Waladde SM,Young AS,Mwaura SN,Njihia GN,Mwakima FN

更新日期：1995-11-01 00:00:00

abstract：:The World Health Organization announced in November 2014 at the fourth international meeting on 'the control of neglected zoonotic diseases - from advocacy to action', that intervention tools for eliminating Taenia solium taeniosis/cysticercosis (TSTC) are in place. The aim of this work was to elucidate theoretical ou...

journal_title：Parasitology

authors： Johansen MV,Trevisan C,Gabriël S,Magnussen P,Braae UC

更新日期：2017-01-01 00:00:00

abstract：:During the early stages of the primary Plasmodium chabaudi chabaudi AS parasitaemia in CBA/Ca mice this parasite invaded normocytes, but as the parasitaemia developed increasing numbers of parasites were seen within reticulocytes. During and just after peak parasitaemia, as further parasite replication was controlled,...

journal_title：Parasitology

authors： Jarra W,Brown KN

更新日期：1989-10-01 00:00:00

abstract：:Oesophagostomum dentatum stages were investigated for glutathione S-transferase (GST) expression at the protein and mRNA levels. GST activity was detected in all stages (infectious and parasitic stages including third- and fourth-stage larvae of different ages as well as males and females) and could be dose-dependentl...

journal_title：Parasitology

authors： Joachim A,Ruttkowski B

更新日期：2008-09-01 00:00:00

abstract：:The extent of sequence diversity among the genes encoding 10 antigens (Tp1-10) known to be recognized by CD8+ T lymphocytes from cattle immune to Theileria parva was analysed. The sequences were derived from parasites in 23 buffalo-derived cell lines, three cattle-derived isolates and one cloned cell line obtained fro...

journal_title：Parasitology

authors： Sitt T,Pelle R,Chepkwony M,Morrison WI,Toye P

更新日期：2018-09-01 00:00:00

abstract：:Amoebiasis, infection by the protozoan parasite Entamoeba histolytica, remains a global health problem, despite the availability of effective treatment. While improved sanitation could lead to the eradication of this disease, it is unlikely that this will occur worldwide in the foreseeable future; thus alternative mea...

journal_title：Parasitology

authors： Stanley SL Jr

更新日期：2006-01-01 00:00:00

abstract：:The current World Health Organization strategic plan targets the elimination of schistosomiasis as a public health problem by 2025 and accurate diagnostics will play a pivotal role in achieving this goal. DNA-based detection methods provide a viable alternative to some of the commonly used tests, notably microscopy an...

journal_title：Parasitology

authors： Weerakoon KG,Gordon CA,Cai P,Gobert GN,Duke M,Williams GM,McManus DP

更新日期：2017-07-01 00:00:00

abstract：:The SICA[-] or non-agglutinable phenotype of Plasmodium knowlesi schizont-infected erythrocytes has been defined serologically but not biochemically. Similarly, non-cloned SICA[+] or agglutinable parasites have been shown serologically to express SICA or variant antigen(s) but the number and nature of such antigens ha...

journal_title：Parasitology

authors： Howard RJ,Barnwell JW

更新日期：1985-10-01 00:00:00

abstract：:The objectives of this study were (a) to evaluate the sensitivity and specificity of foetal Doppler indices for the prediction of abnormal foetal heart rate (aFHR) at delivery after malaria crisis and (b) to test Doppler parameters against crisis duration for predicting aFHR. Every day during the malaria crisis, the u...

journal_title：Parasitology

authors： Arbeille P,Carles G,Georgescu M,Tobal N,Herault S,Bousquet F,Perrotin F

更新日期：2003-06-01 00:00:00

abstract：:The sex ratio of adult worms has been observed biased towards males in Schistosoma mansoni under natural conditions. The origin of this bias is unknown. This paper determines whether males are more infective than females under controlled experimental bisexual conditions, and hence if the sex ratio is male-biased as a ...

journal_title：Parasitology

authors： Boissier J,Moné H

更新日期：2000-10-01 00:00:00

abstract：:This study reports on morphological variability of Eimeria species, which may be given either by drawings or as quantitative data. The drawings may be used to facilitate identification by eye of 'unknown' Eimeria specimens, whereas quantitative data may serve as a reference set for identification by multivariate stati...

journal_title：Parasitology

authors： Sommer C

更新日期：1998-01-01 00:00:00

abstract：:Interferon-gamma (IFN-gamma) has a crucial role for host defence against parasite infection. It is not clear, however, how IFN-gamma affects the parasite-infected host cells. The effect of IFN-gamma on Neospora caninum-infected cells was investigated in murine fibroblasts and canine kidney cells in vitro. In the prese...

journal_title：Parasitology

authors： Nishikawa Y,Mishima M,Nagasawa H,Igarashi I,Fujisaki K,Otsuka H,Mikami T

更新日期：2001-07-01 00:00:00

abstract：:A statistical method that analyses correlation structures in families to delineate the contribution of genetic, household and environmental factors on clustering of infection, has been applied to data collected in an area endemic for brugian filariasis in South Sulawesi, Indonesia. Infection was assessed both by micro...

journal_title：Parasitology

authors： Wahyuni S,Houwing-Duistermaat JJ,Syafruddin,Supali T,Yazdanbakhsh M,Sartono E

更新日期：2004-03-01 00:00:00

abstract：:Infection of intermediate hosts with eggs of taeniid parasites results in a larval infestation known as cysticercosis. A number of studies have indicated that cysticercosis is associated with immunosuppression, although little is known about the mechanisms involved. In the present study, mice infected with the larvae ...

journal_title：Parasitology

authors： Villa OF,Kuhn RE

更新日期：1996-06-01 00:00:00

abstract：:The effects of a parasitic infection with the nematode Nippostrongylus brasiliensis on the degradation rates of cytoplasmic tRNA, rRNA and mRNA in rats have been investigated by measuring the renal excretion rates of the modified RNA catabolites N6-threoninocarbonyladenosine, pseudouridine and 7-methylguanine. Between...

journal_title：Parasitology

authors： Topp H,Duden R,Stephan U,Schöch G

更新日期：1998-02-01 00:00:00

abstract：:The lung schistosomulum of Schistosoma mansoni is the target of protective immunity in mice singly vaccinated with irradiated cercariae. Since the effector responses are T cell-mediated, their initiation requires the release of antigens from the intact parasite. We have used the technique of biosynthetic labelling wit...

journal_title：Parasitology

authors： Harrop R,Wilson RA

更新日期：1993-09-01 00:00:00