Parasite寄生虫
Parasite(英文缩写 PARASITE),ISSN 1252-607X,eISSN 1776-1042,中文译名:寄生虫 是一本学术期刊。本页汇总该期刊的最新影响因子、分区信息以及最新收录于 PubMed 的文献,帮助您快速了解期刊全貌。
发文量统计区间：2025-09-27 至 2026-09-27，按本站收录文献的发表日期统计。
期刊介绍
历年影响因子趋势
| JCR 数据年份 | 影响因子 | JCR 分区 |
|---|---|---|
| 2021 | 3.020 | Q2 |
| 2022 | 2.900 | Q2 |
| 2023 | 2.300 | Q2 |
| 2024 | 2.400 | Q2 |
| 2025 | 2.800 | Q2 |
Parasite 最新收录文献
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1. Species composition of small mammal communities and prevalence of Schistosoma japonicum in the Poyang Lake region, China.
PMID:日期:2026-01-01Small mammals are an important part of the ecosystem and can serve as the definitive host of Schistosoma japonicum. The Poyang Lake region of Jiangxi Province is one of the most important endemic areas of schistosomiasis japonica in China. However, data on the prevalence of schistosomiasis in local small mammal communities are lacking. Therefore, from 2021 to 2022, we captured 409 small mammals in four townships in this region, with a total capture rate of 6.89% (409/5938). There were significant differences in the capture rate among different habitats (χ = 100.74, p < 0.001) and different sampling sites (χ = 100.74, p < 0.001), but there was no significant difference between sampling seasons (χ = 4.437, p = 0.109). Traditional morphology combined with molecular DNA-barcoding was effective in identifying species, and four species, Apodemus agrarius, Rattus losea, R. norvegicus and Crocidura attenuata were identified. PCR of the Sjr2 gene showed a total prevalence of S. japonicum of 2.85% (8/281) in A. agrarius and 2.83% (3/106) in R. losea. The species, sex, age, sampling sites, seasons, and habitats were not significant factors influencing the prevalence of S. japonicum in small mammals. This study revealed the molecular prevalence of S. japonicum in the wild small mammal community in the Poyang Lake region for the first time. Monitoring schistosomiasis prevalence in A. agrarius and R. losea may contribute to future elimination efforts around Poyang Lake.
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2. Molecular characterization of a novel Trichinella spiralis aspartyl protease and its role in the larval invasion of host intestinal epithelial cells.
PMID:日期:2026-01-01The aim of the present study was to characterize the molecular properties of a novel Trichinella spiralis aspartic protease (TsEasp) and to investigate its role in the larval invasion of host intestinal epithelial cells. The full-length TsEasp cDNA was cloned and expressed, and recombinant TsEasp protein (rTsEasp) was purified. Immunization of mice with rTsEasp elicited a robust specific IgG response. qPCR analyses revealed that TsEasp was transcribed at all T. spiralis developmental stages, with markedly higher transcription levels in intestinal infective larvae and adult worms. Indirect immunofluorescence testing showed that TsEasp was expressed throughout the T. spiralis life cycle, and mainly localized at the cuticle, and embryonic periphery in adult females. Far-western blot and indirect immunofluorescence confirmed that rTsEasp binds specifically to Caco-2 cells, predominantly on the cell membrane. The in vitro invasion assay showed that rTsEasp significantly accelerated the larval invasion of Caco-2 monolayers in a dose-dependent manner of rTsEasp protein, whereas anti-rTsEasp antibodies and RNAi markedly suppressed this invasion. Collectively, our results indicate that TsEasp is a key invasive virulence factor in T. spiralis infection.
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3. Colonisation history of a vector species of veterinary interest: phylogeography of Culicoides imicola (Diptera: Ceratopogonidae) in the Indian Ocean revealing low genetic structure.
PMID:日期:2026-01-01Culicoides imicola (Diptera: Ceratopogonidae) is the main historical vector of livestock viruses such as bluetongue virus (BTV), Epizootic Haemorrhagic Disease virus (EHDV) and African Horse Sickness virus (AHSV), in the Afrotropical region. Despite its wide distribution across Africa, the Mediterranean basin and parts of Asia, the genetic structure and colonisation history of this species in the South-West Indian Ocean (SWIO) territories remain poorly understood. The aim of this study was to investigate how passive wind-driven dispersal and recent animal movements associated with human colonisation may have shaped the genetic structure of this vector. We used two mitochondrial markers (cytochrome oxidase 1 and cytochrome oxidase 2) and characterized genetic structure of populations from 4 territories. In addition, phylogenetic analyses were conducted with COI sequences from 11 territories bordering the Indian Ocean retrieved from GenBank database. Phylogenetic analyses on COI sequences suggest no clear lineage or genetic grouping among the 11 territories. In the SWIO, concatenated COI and COII gene analyses show significant genetic differentiation between the four territories, especially between Mauritius and Reunion where populations exhibit signs of demographic expansion. The haplotype network suggests multiple events or potential colonisation pathways, supporting the hypothesis that animal trade is the primary means of introduction from the continent or Madagascar to Mauritius and Reunion. This work serves as a basis for understanding the risk of introduction of viruses transmitted by Culicoides into the island territories of the SWIO and highlights the need to strengthen practices in animal trade in the region.
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4. Another host, another mystery: Infection of polychaete Pista palmata (Annelida: Terebellidae) with a new blood fluke (Digenea: Aporocotylidae) in the coastal Northwest Atlantic Ocean.
PMID:日期:2026-01-01Terebelliform annelids can serve as intermediate hosts for blood flukes of marine fishes and sea turtles. The scarcity of global reports on the life cycles of these parasites reflects the need for further exploration. Our objective was to further our knowledge of the diversity and life cycles of blood flukes in coastal South Carolina (SC), United States. Four species of terebellids (Enoplobranchus sanguineus, Amphitrite ornata, Pista palmata, and Streblosoma hartmanae) were collected (total N = 201) at low tide from September 2025 to February 2026 at two localities in SC. Twelve specimens of three terebellid species were infected, and parasites were identified by sequencing the LSU and ITS2 regions of ribosomal RNA and the COI mitochondrial DNA gene. Enoplobranchus sanguineus (12.9% prevalence, 4/31) and A. ornata (3.6% prevalence, 2/55) were infected with the previously reported blood flukes Neospirorchis sp. Neogen14 (Unicaecidae) and Cardicola parvus (Aporocotylidae), respectively. No specimens of S. hartmanae were infected (0/86). One new aporocotylid with mature sporocysts containing microcercous cercariae was discovered in P. palmata (20.7% prevalence, 6/29). Phylogenetic analysis revealed that sequences of the new aporocotylid were in a well-supported clade with sequences of Braya spp. and Cardicola abu. The fish host of this parasite has yet to be discovered to fully elucidate the life cycle of this new aporocotylid.
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5. Epidemiologic survey and genotyping of Enterocytozoon bieneusi in sika deer (Cervus nippon) in four provinces of China.
5. 中国四省梅花鹿（Cervus nippon）毕氏肠微孢子虫的流行病学调查及基因分型PMID:日期:2026-01-01Microsporidia are obligate intracellular parasites with a wide host range. To elucidate the relationship between Enterocytozoon bieneusi infection dynamics and evolution within China's sika deer population, 466 fresh fecal samples were collected from May to October 2024 across four provinces, Jilin, Liaoning, Heilongjiang, and Shandong. The ITS region of ribosomal RNA (rRNA) was amplified using nested PCR, enabling the identification and genotyping of E. bieneusi. The overall prevalence of E. bieneusi in sika deer was 44.4% (207/466). Province-specific prevalence was highest in Shandong (76.0%, 38/50) and Heilongjiang (75.3%, 67/89), followed by Jilin (38.7%, 65/168), and lowest in Liaoning (23.3%, 37/159). The prevalence in autumn (44.9%) was slightly higher than in summer (41.7%), and the prevalence in adult deer (48.7%) was found to be significantly higher than in young deer (31.6%). In this study, we identified a total of 11 E. bieneusi genotypes, including 9 known genotypes (BEB6, HND-II, LND-I, JLD-XIX, CHN-F1, HLJD-I, HLJD-III, Type IV, and COS-I) and 2 novel genotypes (named JL-D-4 and JL-D-5). Among them, BEB6 was the dominant genotype (38.7%, 80/207). This study enriches the genotype data of E. bieneusi, reveals the prevalence of E. bieneusi in some sika deer populations, and provides a reference for subsequent epidemiologic research as well as prevention and control efforts.
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6. Human infestations with Fasciola hepatica in Austria between 1955 and 2025: data from a low-incidence country.
PMID:日期:2026-01-01Although rare, human Fasciola hepatica (FH) infestations represent a clinically relevant parasitosis that can cause significant clinical manifestations and functional limitations, particularly affecting the liver. Laboratory tests typically reveal elevated white blood cell counts and absolute or relative eosinophilia. The Department of Medical Parasitology at the Institute for Specific Prophylaxis and Tropical Medicine, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, is the national reference center for FH infestations in Austria. In this study, we assessed all confirmed human FH infestation cases between 1955 and 2025 and retrospectively analyzed their demographic, clinical, laboratory, and imaging data. In all, 64 human FH infestations were recorded. Although some patients were asymptomatic, most had fever, abdominal pain, hepatosplenomegaly, and elevated liver parameters. Pancreatitis, diarrhea, pulmonary symptoms, weight loss, or skin lesions, mainly urticaria, were present in a few cases. During the observation period, the diagnosed cases gradually increased decade by decade, largely due to improved diagnostic tests for FH. However, during the last 10 years, a decline in new diagnosed cases has been observed. Until the 1980s, cases concerned only individuals born in Austria. Since the 1990s, there have been case reports concerning people with a migration background, reflecting demographic changes. The distribution of FH cases within Austria was found to be unequal, with certain regions reporting higher incidence (Salzburg, Upper Austria, and Vorarlberg). Fasciola hepatica infestation is a rare parasitosis in Austria. However, it should be considered as a differential diagnosis, especially among migrants and travelers returning from endemic regions presenting with eosinophilia and abdominal pain.
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7. Bothriocestus claviceps (Cestoda: Bothriocephalidae) in pike in southwestern France (Teleostei: Esocidae): molecular evidence.
PMID:日期:2026-01-01Bothriocestus claviceps (Goeze, 1782) is a cestode parasite infecting several fish species. One of its principal definitive hosts is the European eel Anguilla anguilla. The parasite is widely distributed across Europe and has been reported from numerous countries, such as Poland, Czechia, and France. In southern France, the European eel co-occurs with the Aquitanian pike, Esox aquitanicus, an endemic species. This pike is threatened by human activities and hybridization with the introduced Northern pike Esox lucius and is therefore classified as "vulnerable" on the French Red List of the International Union for Conservation of Nature (IUCN). Despite its conservation status, little information is available regarding its biology, particularly its parasitofauna, which remains undocumented. Over a three-year period, Aquitanian pike were collected and examined for parasites. Cestodes recovered from the intestinal tract were analyzed using a molecular approach. Molecular identification of the species was based on partial sequences of 28S ribosomal DNA and cytochrome oxidase subunit I (COI). Morphometric data were also obtained to provide additional data on the identified cestode species. Our results provide the first evidence of the presence of B. claviceps in the intestine of E. aquitanicus, as well as in one hybrid (E. aquitanicus × E. lucius), and suggest that these fish can act as definitive or post-cyclic hosts for this cestode species. This study contributes new insights into the parasitofauna of the Aquitanian pike and expands current knowledge of B. claviceps.
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8. In vivo double labeling of putative neuronal and excretory structures in Echinococcus granulosus protoscoleces and associated membranes obtained by a lipophilic dye.
PMID:日期:2026-01-01Echinococcus granulosus is a platyhelminth parasite and the causative agent of cystic echinococcosis, a neglected zoonotic disease affecting humans and animals worldwide. In this study, lipophilic tracing techniques were applied to live protoscoleces and associated membranes to evaluate whether neuronal structures could be visualized in vivo. Incubation with the lipophilic tracer DiI produced a staining pattern consistent with both excretory structures and putative neuronal elements. Although DiI is commonly used as a neuronal tracer, it reproducibly labeled a branched tubular structure resembling the excretory system of live protoscoleces. Notably, staining revealed a continuous connection between the protoscolex excretory system and the excretory network within the brood capsule, suggesting anatomical continuity between these structures. In addition, putative neuronal cell bodies and projections were observed mainly in the scolex region, and some putative multipolar neuronal cells were detected in brood capsules. Close spatial localization between neuronal projections and the terminal regions of the excretory canals was also observed. These staining patterns were absent in dead protoscoleces, indicating that DiI can function as a vital stain under these conditions. In contrast, resazurin produced a different staining pattern and did not label defined internal membranous structures. Although DiI fluorescence was retained after paraformaldehyde fixation, the signal did not withstand the permeabilization and antibody-incubation procedures required for immunohistochemistry. This study represents the first application of a neuronal tracer in live cestode larvae and provides a novel approach for visualizing putative neuronal and excretory structures, potentially aiding the identification of new targets for cystic echinococcosis.
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9. Spatiotemporal patterns of zoonotic cutaneous leishmaniasis in the high-burden provinces of Morocco, 1995-2022: an exploratory analysis of environmental and socio-demographic correlates.
PMID:日期:2026-01-01Zoonotic cutaneous leishmaniasis (ZCL) caused by Leishmania major remains a major public health concern in Morocco, especially in certain semi-arid and pre-Saharan regions where ecological conditions favor transmission. In recent decades, the epidemiology of ZCL has evolved significantly, particularly in its temporal patterns and the persistence of transmission in major endemic provinces. In this study, we adopted a retrospective observational approach to explore the long-term spatiotemporal dynamics of ZCL across nine endemic provinces in Morocco and to assess its potential environmental, socio-economic, and demographic determinants using a descriptive analytical framework. A total of 58,880 ZCL cases were reported during the study period between 1995 and 2022, with incidence peaks observed in 2010 and 2018, reflecting cyclical epidemic dynamics. The Drâa-Tafilalet region accounted for the highest disease burden, with Zagora province identified as the main epidemiological hotspot. Children aged ≤10 represented the most affected age group (40.8% of total cases), whereas infection rates did not differ significantly between the sexes (female-to-male ratio = 1.17). Higher incidence was observed in hyper-arid provinces characterized by sandy-clay-loam soils. However, incidence was not statistically correlated with either environmental or social variables (p > 0.05). ZCL remains endemic in Morocco, with persistent hotspots linked to specific ecological contexts. These findings highlight the importance of geographically targeted surveillance and control measures to support the integration of environmental indicators into risk monitoring and early-warning systems for leishmaniasis.
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10. Genetic characterisation of Cryptosporidium spp., Encephalitozoon spp., and Enterocytozoon bieneusi in European brown hare (Lepus europaeus) in Central Europe.
PMID:日期:2026-01-01The European brown hare (Lepus europaeus) is an ecologically important small game mammal whose populations have declined in many European countries. A total of 370 faecal samples collected between 2022 and 2024 from hares in the Czechia and Slovakia were molecularly screened for the presence of Cryptosporidium spp. (18S rRNA, gp60), Giardia intestinalis (TPI), Encephalitozoon spp., and Enterocytozoon bieneusi (ITS). qPCR analysis confirmed the presence of Cryptosporidium spp. (n = 15; 4.1%; CI: 2.5-6.6%), Encephalitozoon spp. (n = 34; 9.2%; CI: 6.7-12.6%), and E. bieneusi (n = 16; 4.3%; CI: 2.6-6.9%). Sequence analyses revealed the presence of C. parvum (n = 2), C. sciurinum (n = 3), C. ubiquitum (n = 5), and Cryptosporidium sp. deer mouse genotype IV (n = 5). At the gp60 locus, C. parvum belonged to subtypes IIaA15G1R1 and IIaA23G1R1, C. sciurinum to subtypes VIIIcA10G2R1 (n = 2) and VIIIbA11G1R1 (n = 1), and C. ubiquitum to subtypes XIIa (n = 3) and XIId (n = 2). Five E. bieneusi genotypes were identified: D (n = 8), CHALT1 (n = 1), WildBoar3 (n = 1), CHN-F1 (n = 2), and C (n = 4). Encephalitozoon sequencing revealed E. cuniculi genotypes I (n = 6), II (n = 26), and III (n = 1), and E. hellem (n = 1). Giardia intestinalis was not detected. Cryptosporidium sp. deer mouse genotype IV is reported here for the first time in Europe.