Parasitology International Journal Impact Factor & Information

Publisher: Nihon Kiseichū Gakkai, Elsevier

Journal description

Parasitology International provides a medium for rapid, carefully reviewed publications in the field of human and animal parasitology. Original papers, rapid communications, and original case reports from all geographical areas and covering all parasitological disciplines, including structure, immunology, cell biology, biochemistry, molecular biology, and systematics, may be submitted. Reviews on recent developments are invited regularly, but suggestions in this respect are welcome. Letters to the Editor commenting on any aspect of the Journal are also welcome.

Current impact factor: 2.11

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2013 / 2014 Impact Factor 2.111
2012 Impact Factor 2.302
2011 Impact Factor 2.132
2010 Impact Factor 2.259
2009 Impact Factor 1.701
2008 Impact Factor 2.152
2007 Impact Factor 1.776
2006 Impact Factor 1.5
2005 Impact Factor 1.28
2004 Impact Factor 1.083
2003 Impact Factor 1.205
2002 Impact Factor 1.03

Impact factor over time

Impact factor

Additional details

5-year impact 2.37
Cited half-life 4.50
Immediacy index 0.69
Eigenfactor 0.00
Article influence 0.66
Website Parasitology International website
Other titles Parasitology international (Online), PI
ISSN 1383-5769
OCLC 39127237
Material type Document, Periodical, Internet resource
Document type Internet Resource, Computer File, Journal / Magazine / Newspaper

Publisher details


  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • Pre-print allowed on any website or open access repository
    • Voluntary deposit by author of authors post-print allowed on authors' personal website, or institutions open scholarly website including Institutional Repository, without embargo, where there is not a policy or mandate
    • Deposit due to Funding Body, Institutional and Governmental policy or mandate only allowed where separate agreement between repository and the publisher exists.
    • Permitted deposit due to Funding Body, Institutional and Governmental policy or mandate, may be required to comply with embargo periods of 12 months to 48 months .
    • Set statement to accompany deposit
    • Published source must be acknowledged
    • Must link to journal home page or articles' DOI
    • Publisher's version/PDF cannot be used
    • Articles in some journals can be made Open Access on payment of additional charge
    • NIH Authors articles will be submitted to PubMed Central after 12 months
    • Publisher last contacted on 18/10/2013
  • Classification
    ​ green

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: Species of the family Prosthogonimidae are considered the most pathogenic poultry trematodes worldwide, affecting particularly low intensity farming in rural areas. Adults of Prosthogonimus occur mainly in the bursa of Fabricius, oviduct and cloaca of ducks, geese, fowl and other birds feeding at least occasionally on dragonflies or damselflies (Odonata). We analyzed the central European species of the Prosthogonimidae, namely Prosthogonimus cuneatus, P. ovatus, P. pellucidus and P. rarus. We sequenced three nuclear (ITS2) and mitochondrial (CO1, ND1) DNA loci of four species isolated from Anas clypeata, Anas strepera, Anas platyrhynchos, Aythya ferina, Passer domesticus and Turdus merula. Intra- and inter-specific sequence variability revealed that all four species represent distinct well-defined entities. Our data, combined with previously published studies, suggest the return of the name Prosthogonimus rarus Braun, 1901 for Schistogonimus rarus (Braun, 1901). The genus name Schistogonimus Lühe, 1909 is considered a junior synonym of Prosthogonimus Lühe, 1899. We identified the existence of two clades, one represented by P. cuneatus and P. pellucidus, and another one formed by P. ovatus and P. rarus. We also provide comparative measurements of these four central European prosthogonimids, and address their tissue specificity, host-specific prevalence (based on the extensive bird cohort examined in years 1962-2014), and for some bird hosts we address also differences in the prevalence of Prosthogonimus spp. in natural and near-natural wetlands in comparison with fishponds utilized for intense carp production. We provide an updated key to European Prosthogonimus spp. based on their morphological characters. Copyright © 2015. Published by Elsevier Ireland Ltd.
    Parasitology International 10/2015; 64(5):264-273. DOI:10.1016/j.parint.2015.02.003
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    ABSTRACT: Centrocestus formosanus is an intestinal foodborne trematode with medical and veterinary importance that remains with pathological and immunological aspects of the infection in definitive host poorly studied. In the present study, we evaluated effects of pharmacological immunosuppression by glucocorticoids in experimental centrocestiasis. Mice of the AKR/J strain were orally inoculated with 100 metacercariae of C. formosanus obtained in naturally infected fish (Australoheros facetus) collected in an urban reservoir from Brazil. Treatment with dexamethasone (25mg/kg, via subcutaneous injection) was started 1 hour before infection of mice and then continued daily during 14 days post-infection. Untreated mice also infected with C. formosanus were used as control. At the end of the treatment course, all rodents were euthanized and adult parasites recovered from host intestines were subjected to morphological and morphometric analysis under optical microscopy. The worm burden in dexamethasone treated group [70 ± 14 (41–85)] was significantly greater (p < 0.0001) than that in the control group [15 ± 4 (10–22)]. In addition, the parasites recovered from immunosuppressed mice were larger, with more developed reproductive structures and greater number of intrauterine eggs than in control mice. These parasite developmental changes induced by dexamethasone treatment are reported for the first time in experimental centrocestiasis. Moreover the higher parasite fecundity induced by glucocorticoid treatment had so far not been reported for any heterophyid species, which can have implications for the pathology and morbidity in infections caused by these parasites.
    Parasitology International 02/2015; 58. DOI:10.1016/j.parint.2015.02.002
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    ABSTRACT: Rodent malaria is a useful model for evaluating the efficacy of malaria vaccine candidates; however, labor-intensive microscopic parasite counting hampers the use of an in vivo parasite challenge in high-throughput screening. The measurement of malaria parasite lactate dehydrogenase (pLDH) activity, which is commonly used in the in vitro growth inhibition assay of Plasmodium falciparum, may be the cheapest and simplest alternative to microscopic parasite counting. However, the pLDH assay has not been applied in the in vivo rodent malaria model. Here, we showed that the pLDH assay is reliable and accurately determines parasitemia in the rodent malaria model. pLDH activity measured using a chromogenic substrate reflects the parasite number in the blood; it allows fast and easy assessment using a conventional microplate reader. To validate this approach, we synthesized recombinant PyMSP1-19 protein (rPyMSP1-19) using a wheat germ cell-free protein synthesis system and immunized mice with rPyMSP1-19. The antisera showed specific reactivity on the surface of the P. yoelii merozoite and immunized mice were protected against a lethal P. yoelii 17 XL challenge. The pLDH assay quickly and easily demonstrated a significant reduction of the parasite numbers in the immunized mice. Accordingly, the pLDH assay proved to be an efficient alternative to rodent malaria parasite counting, and may therefore accelerate in vivo vaccine candidate screening. Copyright © 2015. Published by Elsevier Ireland Ltd.
    Parasitology International 02/2015; DOI:10.1016/j.parint.2015.02.001
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    ABSTRACT: Acanthocephala is a relatively small, but distinct obligate parasitic group that includes 4 classes Archiacanthocephala, Palaeacanthocephala, Polyacanthocephala, and Eoacanthocephala. The phylogenetic relationships of acanthocephalans are mainly based on nuclear ribosomal genes. In this study, we determined the complete mitochondrial genome sequence of Southwellina hispida (Palaeacanthocephala: Polymorphida), and used this genome sequence along with other platyzoan species (including syndermatan groups) to assess its phylogenetic position within Acanthocephala. The S. hispida mtDNA is a 14,742bp circular molecule that contains 36 genes (lacking atp8) encoded in the same direction. Phylogenetic analyses of amino acid sequences for 12 protein-coding genes suggested palaeacanthocephalan species to be monophyletic, and this group to be sister to Eoacanthocephala. These results confirm other morphological and molecular data supporting Palaeacanthocephalan monophyly. Copyright © 2015. Published by Elsevier Ireland Ltd.
    Parasitology International 02/2015; 64(4). DOI:10.1016/j.parint.2015.01.009
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    ABSTRACT: Quantitative complex analyses of parasite communities of invaders across different native and introduced populations are largely lacking. The present study provides comparative analysis of species richness of helminth parasites in native and invasive populations of grey mullets. The total species richness differed between regions and host species, but did not differ when compared invasive and native hosts. The size of parasite assemblages of endohelminths was higher in the Mediterranean and Azov-Black Sea, while monogeneans were the most diverse in the Sea of Japan. The helminth diversity was apparently higher in the introduced population of L. haematocheilus than in those of their native habitat, but this trend could not be confirmed when size of geographic range and sampling efforts were controlled for. The parasite species richness at the infracommunity level of the invasive host population is significantly lower in comparison with native host populations that lending support to the enemy release hypothesis. A distribution pattern of the infracommunity richness of acquired parasites by the invasive host can be characterized as aggregated and it is random in native host populations. Heterogeneity in the host susceptibility and vulnerability to acquired helminth species assumed to be a reason of the aggregation of species numbers in population of the invasive host. Copyright © 2015. Published by Elsevier Ireland Ltd.
    Parasitology International 01/2015; 64(4). DOI:10.1016/j.parint.2015.01.001
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    ABSTRACT: The presence of a Raphidascarid parasitic nematode Hysterothylacium aduncum (Rudolphi,1802) in two sparid fish (Sparus aurata and Diplodus vulgaris) and one soleid fish (Solea solea) was investigated in this study. A total of 868 individuals; 385 S. aurata, 437 D. vulgaris and 46 S. solea were collected from the Mersin Bay between February 2013 and January 2014 and examined. Variations in the prevalence, mean intensity, and mean abundance of the parasite were 14.55%, 2.05, 0.30 for S. aurata, 4.12%, 2.44, 0.10 for D. vulgaris, and 15.22%, 3.29, 0.50 for S. sole respectively. Nucleotide sequences of 1398 base pair long fragment of 18S rRNA-ITS1-5.8S rRNA-ITS2-28S rRNA region and 641 base pair long fragment of mtDNA cytochrome c oxidase I (cox1) gene were used in molecular identification of isolated parasites at species level. All the parasite samples were identified as Hysterothylacium aduncum based on nucleotide sequence comparisons. Both ITS rDNA and mtDNA cox1 sequences revealed a genetic variation among H. aduncum specimens isolated from different fish species, while only mtDNA cox1 sequences were indicating a mean genetic distance of 0.010 among H. aduncum specimens of the same host species
    Parasitology International 12/2014; 64(2). DOI:10.1016/j.parint.2014.12.008
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    ABSTRACT: Artemisinin has many derivatives, and they are effective against Plasmodium spp. However, only a limited number of reports have confirmed the efficacy of artemisinin derivatives against Babesia spp. In this study, whether artemisinin and artemether could inhibit the growth of B. gibsoni was evaluated in vitro. In addition, the interaction between artemerther and lumefantrine was evaluated. These drugs inhibited the growth of B. gibsoni, but artemisinin and artemerther showed lower sensitivity against atovaquone-resistant B. gibsoni than against wild-type B. gibsoni. The interaction between artemerther and lumefantrine showed synergism against B. gibsoni. Although further study is needed, the combination of artemisinin derivatives could be useful for babesiosis.
    Parasitology International 12/2014; 64(2). DOI:10.1016/j.parint.2014.12.006
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    ABSTRACT: Thioredoxin (Trx) is an oxidoreductase central to redox homeostasis in cells and is involved in the regulation of protein activity through thiol/disulfide exchanges. Based on these facts, our goal was to purify and characterize cytosolic thioredoxin from Taenia crassiceps cysticerci, as well as to study its behavior as a substrate of thioredoxin-glutathione reductase (TGR). The enzyme was purified > 133-fold with a total yield of 9.7%. A molecular mass of 11.7 kDa and a pI of 4.84 were measured.
    Parasitology International 12/2014; 64(2). DOI:10.1016/j.parint.2014.12.004