Abstract:
:Reliable analytical techniques to test growth-promoting and antimalarial efficacy on plasmodia are very important. Flow cytometry (FCM) offers the possibility to study developmental stages of intraerythrocytic growth of malaria parasites using nucleic acid staining. To analyze the growth of Plasmodium falciparum SYBR Green I was introduced as an intercalating dye with FCM for the 488nm line of an argon laser. Procedures employing FCM, including fixatives, dye concentrations, dilution buffer, and staining period, were optimized to simplify the method. FCM as described here allows parasitemia and parasites of different stages to be quantified according to the DNA content. The proportion of parasitized erythrocytes estimated by FCM and the Giemsa method agreed with determination by parasite lactate dehydrogenase. The protocol was extended to merozoite counting as a sensitive assay of growth inhibition of the parasite.
journal_name
Exp Parasitoljournal_title
Experimental parasitologyauthors
Izumiyama S,Omura M,Takasaki T,Ohmae H,Asahi Hdoi
10.1016/j.exppara.2008.10.008subject
Has Abstractpub_date
2009-02-01 00:00:00pages
144-50issue
2eissn
0014-4894issn
1090-2449pii
S0014-4894(08)00274-9journal_volume
121pub_type
杂志文章abstract::The petroleum ether extract of neem oil and its four fractions separated by column chromatography was diluted at different concentrations with liquid paraffin. The acaricidal bioassay was conducted using a dipping method. The results indicated that the median lethal concentration (LC50) of the petroleum ether extract ...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2012.02.007
更新日期:2012-04-01 00:00:00
abstract::Six chimpanzees (Pan troglodytes) and six mangabey monkeys (Cercocebus atys) were inoculated with Onchocerca volvulus third-stage larvae (L3) of West African origin. Two chimpanzees each received 200, 300, or 400 L3, while three mangabeys each received either 50 or 250 L3. All six chimpanzees became microfilaria posit...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1006/expr.1995.1057
更新日期:1995-05-01 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::The biochemical properties of the enzyme responsible for nematode "activated L-serine sulphydrase" activity (L-cysteine + R-SH----cysteine thioether + H2S) have been investigated using primarily the gastro-intestinal nematodes Nippostrongylus brasiliensis and Haemonchus contortus. The activated L-serine sulphydrase en...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/0014-4894(92)90048-f
更新日期:1992-03-01 00:00:00
abstract::Activation of the hypothalamus-pituitary-adrenal axis plays a major role in the suppression of the immune system. We have investigated the effects of repetitive stress on Wistar rats infected with the Y strain of Trypanosoma cruzi and a control group that underwent stressor stimuli by exposure to ether vapor for one m...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2005.03.009
更新日期:2005-06-01 00:00:00
abstract::Interleukin-13 (IL-13) is a powerful anti-inflammatory cytokine that was previously shown to be a susceptibility factor for Leishmania major (L. major) infection. In this study we report a different role for IL-13 in rats infected with L. major; rIL-13 stimulates expression of pro-inflammatory cytokines and IL-12 whic...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2008.11.004
更新日期:2009-03-01 00:00:00
abstract::The contribution of mononuclear phagocytes to host resistance against acute Chagas disease has been studied in vivo in a rat model inoculated with Trypanosoma cruzi, Y strain. Acute T. cruzi infection triggered a dramatic increase (937%) in peripheral blood monocyte number at day 12 of infection. At this point, histol...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1006/expr.2000.4576
更新日期:2001-01-01 00:00:00
abstract::Trypanosoma congolense is an important pathogen that wreaks havoc in the livestock industry of the African continent. This study evaluated the in vivo antitrypanosomal activity of geranylacetone and its ameliorative effect on the disease-induced anaemia and organ damages as well as its inhibitory effects against trypa...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2019.04.011
更新日期:2019-06-01 00:00:00
abstract::The role of oxidative stress in the pathogenicity of acanthamoebiasis is an important aspect of the intricate and complex host-parasite relationship. The aim of this experimental study was to determine oxidative stress through the assessment of lipid peroxidation product (LPO) levels and antioxidant defense mechanism ...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2018.09.002
更新日期:2018-10-01 00:00:00
abstract::Giardia lamblia is the most commonly detected parasite in the intestinal tract of humans and other mammals causing giardiasis. Giardia presents several cytoskeletal structures with microtubules as major components such as the ventral adhesive disk, eight flagella axonemes, the median body and funis. Many drugs have al...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2005.01.007
更新日期:2005-05-01 00:00:00
abstract::Leishmaniasis are globally widespread parasitic diseases which often leads to death if left untreated. Currently available drugs present different drawbacks, so there is an urgent need to develop new, safe and cost-effective drugs against leishmaniasis. In this study we tested a small library of trans-stilbene and ter...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2016.03.007
更新日期:2016-07-01 00:00:00
abstract::Spent mushroom compost (SMC) is a residue generated in edible mushrooms production, such as Hypsizygus marmoreus. Its genome was recently sequenced, demonstrating cuticle-degrading protease genes. The present work aims to investigate the proteases from H. marmoreus spent mushroom compost (SMC) by verifying its action ...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2018.12.006
更新日期:2019-02-01 00:00:00
abstract::Shigellosis is a serious public health problem in Korea, because large outbreaks of Shigella sonnei infections were recorded in many parts of the country during the period 1998-2000. However, the epidemiological features of shigellosis are not well known. In this study, we devised conditions suitable for the growth an...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2006.08.002
更新日期:2007-02-01 00:00:00
abstract::In C57BL/6 mice, Leishmania donovani infection in the liver provoked IFN-γ-induced expression of the immunity-related GTPases (IRG), Irgm1 and Irgm3. To gauge the antileishmanial effects of these macrophage factors in the liver, intracellular infection was analyzed in IRG-deficient mice. In early- (but not late-) stag...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2015.07.005
更新日期:2015-10-01 00:00:00
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 ...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/0014-4894(91)90006-i
更新日期:1991-07-01 00:00:00
abstract::Chagas' disease is caused by unicellular parasite Trypanosoma cruzi (T. cruzi). It is endemic throughout Latin America, but nowadays has become a global challenge due to tourism and migration. Non-treated infection may result in health-threatening complications and lead to death. Current medications for this infection...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2016.12.013
更新日期:2017-01-01 00:00:00
abstract::The anthelmintic effects of plumbagin (PB, 5-hydroxy-2-methyl-1,4-naphthoquinone) and praziquantel (PZQ) against adult Schistosoma mansoni in vitro were compared by estimating the relative motility (RM) values, survival indices (SI) and alterations of the tegument of flukes incubated in M-199 medium containing 1, 10 a...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2012.10.003
更新日期:2013-01-01 00:00:00
abstract::Differences in gene expression between adult and immature Fasciola hepatica (liver fluke) parasites isolated from the mammalian host were investigated using the technique of differential display. For any given primer combination used to produce these displays there were, on average, 22% apparently adult-specific and 1...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1006/expr.1998.4287
更新日期:1998-06-01 00:00:00
abstract::A cell-free culture system for Cryptosporidium parvum was analysed using scanning electron microscopy (SEM) to characterise life cycle stages and compare gene expression in cell-free culture and cell culture using HCT-8 cells. Cryptosporidium parvum samples were harvested at 2 h, 8 h, 14 h, 26 h, 50 h, 74 h, 98 h, 122...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2015.03.002
更新日期:2015-06-01 00:00:00
abstract::The oocysts of Eimeria tenella, one of the most pathogenic of several species causing chicken coccidiosis, are difficult to distinguish microscopically from several other infective Eimeria species. One copy of a gene coding for 5S ribosomal RNA has been cloned from E. tenella and sequenced. A coding region of 120 nucl...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1006/expr.1993.1008
更新日期:1993-02-01 00:00:00
abstract::Toxoplasma gondii is an intra-cellular parasite that infects humans through vertical and horizontal transmission. The cysts remain dormant in the brain of infected humans and can reactivate in immunocompromised hosts resulting in acute toxoplasmic encephalitis which may be fatal. We determined the onset and progressio...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2011.10.004
更新日期:2012-01-01 00:00:00
abstract::This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at http://www.elsevier.com/locate/withdrawalpolicy. ...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2012.04.001
更新日期:2012-04-11 00:00:00
abstract::Free Living Amoebae (FLA) are considered ubiquitous. FLAs may infect various biological organisms which act as reservoir hosts. Infected freshwater fishes can pose a public health concern due to possible human consumption. This study aims to identify possible pathogenic FLAs present in freshwater fishes. Seventy five ...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2017.09.009
更新日期:2017-12-01 00:00:00
abstract::The protozoan Trypanosoma evansi is described as presenting high morphological and genetic similarities among the isolates despite its biological heterogeneity and wide geographical distribution. PCR amplification of the internal transcribed spacers of the ribosomal gene in combination with the coding region of the 5....
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2007.10.003
更新日期:2008-03-01 00:00:00
abstract::We show that a purified preparation of the prominent tartrate-resistant acid phosphatase (E.C.3.1.3.2), isolated from the external surface of the intracellular parasite Leishmania donovani (promastigote form), inhibits toxic oxidative metabolite production of neutrophils. Preincubation of a neutrophil suspension (2.5 ...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/0014-4894(85)90039-6
更新日期:1985-12-01 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
doi:10.1016/j.exppara.2020.108063
更新日期:2021-01-04 00:00:00
abstract::Schistosomiasis is one of the world's greatly neglected tropical diseases, and its control is largely dependent on a single drug, praziquantel. Here, we report the in vitro effect of piplartine, an amide isolated from Piper tuberculatum (Piperaceae), on Schistosoma mansoni adult worms. A piplartine concentration of 15...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2010.08.021
更新日期:2011-02-01 00:00:00
abstract::Pyruvate kinase (PK; EC 2.7.1.40) and phosphoenolpyruvate carboxykinase (PEPCK; EC 4.1.1.32) are essential regulatory enzymes of glucose oxidation in helminths, the PK/PEPCK branch point being the first divergent step between carbohydrate catabolism of the parasites and their hosts. Recently, PEPCK from the cestode pa...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2015.03.023
更新日期:2015-06-01 00:00:00
abstract::The cDNA clone coding a major vault protein (MVP)-like protein was derived from Echinococcus multilocularis cysts. MVP is a main component of vault particles, which are the largest cytoplasmic ribonucleoprotein particles in eukaryotic cells. We sequenced and characterized E. multilocularis MVP (EmMVP). The nucleotide ...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2013.02.015
更新日期:2013-05-01 00:00:00
abstract::Ticks are obligate blood-sucking ectoparasites of a wide range of vertebrates. They can transmit a range of pathogens that cause economic losses to livestock production as well as human disease. In the present study, the complete mitochondrial (mt) genome of Dermacentor silvarum was determined. The mt genome is 14,945...
journal_title:Experimental parasitology
pub_type: 杂志文章
doi:10.1016/j.exppara.2016.07.004
更新日期:2016-10-01 00:00:00