解剖学和形态学
麻醉学
听力与言语-语言病理学
行为科学
心脏和心血管系统
细胞和组织工程学
临床神经病学
危重症监护医学
牙科,口腔外科和医学
皮肤病学
急诊医学
内分泌学和新陈代谢
肠胃学和肝脏学
老人病学和老年医学
卫生保健科学和服务
血液学
免疫学
传染病
综合和补充性医学
医学伦理学
医学信息学
医学实验室技术
医学,全科和内科
医学,法律
医学,研究和试验
神经系统科学
护理
营养学和饮食学
产科医学和妇科医学
肿瘤学
眼科学
整形外科学
耳鼻喉科学
病理学
儿科学
周围血管疾病
药理学和药剂学
生理学
基本医疗保健
精神病学
公共、环境和职业卫生
放射学,核医学和医学成像
康复学
生殖生物学
呼吸系统
风湿病学
运动科学
外科学
毒理学
热带医学
泌尿学和肾脏学
病毒学
老年医学
健康政策和服务
心理学,临床
abstract::Sexual size dimorphism (SSD) in mammals reveals the extent of sexual selection, which may in turn explain why males are often more infected by parasites than females and that parasites may contribute to the association between SSD and male-biased mortality. Here, we investigated the relationship between SSD in small m...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182004005840
更新日期:2004-10-01 00:00:00
abstract::The mechanism by which Giardia lamblia exerts its pathogenicity is likely to be multifactorial. A 58 kDa enterotoxin was purified and characterized from the excretory-secretory product (ESP) of the parasite (Kaur et al. 2001). In the present study an attempt has been made to elucidate the mechanism of action of the ES...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182004005852
更新日期:2004-10-01 00:00:00
abstract::We studied the pattern of infection and the inter-annual variation and individual factors affecting the infection of 2 species of nasopharyngeal bot flies, Cephenemyia auribarbis and Pharyngomyia picta (Diptera: Oestridae), in a population of Iberian red deer (Cervus elaphus hispanicus) from south central Spain (10 an...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182004005578
更新日期:2004-09-01 00:00:00
abstract::Here, the validity of the assumption of concerted evolution of ribosomal regions in larval and adult Cooperia oncophora was assessed. In each of 4 individuals of this parasitic nematode, at least 78% of the sequences comprised different ITS variants. This implies that concerted evolution is not acting, which is corrob...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182004005499
更新日期:2004-08-01 00:00:00
abstract::This paper investigates a cohort of 2187 laboratory reared Culex quinquefasciatus fed on 69 human volunteers, including 59 persons with different levels of Wuchereria bancrofti microfilariae and 10 without microfilaria. Mosquitoes were followed until death. Mosquito survival was analysed in relation to the level of mi...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182004005153
更新日期:2004-07-01 00:00:00
abstract::Recent studies of the forces behind the diversification of parasite assemblages have shed light on many aspects of parasite biodiversity. By using only parasite species richness as their measure of diversity, however, previous investigations have ignored the relatedness among parasite species and the taxonomic structu...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182004005050
更新日期:2004-06-01 00:00:00
abstract::This study was conducted to quantify the association between meteorological variables and incidence of Plasmodium falciparum in areas with unstable malaria transmission in Ethiopia. We used morbidity data pertaining to microscopically confirmed cases reported from 35 sites throughout Ethiopia over a period of approxim...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182004005013
更新日期:2004-06-01 00:00:00
abstract::The behaviour and development of Elasmosoma sp., near pergandei Ashm. (Neoneurinae: Braconidae: Hymenoptera), a parasite of the ant, Formica obscuriventris clivia Creighton, was studied in a coastal sand dune habitat in central Oregon over a 2-year period. Female wasps oviposited into the abdomen of major worker ants ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182004004809
更新日期:2004-05-01 00:00:00
abstract::The individual and combined effects of cadmium (Cd) and 3,3',4,4',5-pentachlorobiphenyl (PCB 126) on the antibody response of fish against metazoan parasites were tested. Eels experimentally infected with the swim bladder nematode Anguillicola crassus were exposed to sublethal concentrations of Cd and PCB 126. Cd was ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s003118200300475x
更新日期:2004-04-01 00:00:00
abstract::The population of malaria-causing parasites is characterized by great genetic diversity. Knowledge of the polymorphism generation mechanism is a central issue for developing effective vaccines against malaria and understanding the parasite population structure. Plasmodium vivax genetic diversity has been explained in ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182003004773
更新日期:2004-04-01 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
pub_type: 杂志文章
doi:10.1017/s0031182003004487
更新日期:2004-03-01 00:00:00
abstract::Recent studies of Echinococcus granulosus molecular strain typing have enabled a better understanding of the transmission cycle of cystic echinococcosis. There have been many publications in this area but there is a need for the evaluation of these tools. We have attempted to respond to this need in our study, which a...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182003004359
更新日期:2004-02-01 00:00:00
abstract::Immunization against the protozoan Theileria parva by infection and treatment has proved to be very efficient for the control of East Coast fever, an acute and often-fatal lymphoproliferative tick-borne disease of cattle in Eastern, Central and Southern Africa. The immunizing dose of live T. parva sporozoites used in ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182003004323
更新日期:2004-02-01 00:00:00
abstract::Ticks are of vast medical and veterinary public health importance due to direct damage caused by feeding and their roles in transmitting well known and emerging infectious agents. Ticks and tick-borne pathogens stimulate the immune system of the host. Those immune interactions are of importance in tick biology, pathog...
journal_title:Parasitology
pub_type: 杂志文章,评审
doi:10.1017/s0031182004004834
更新日期:2004-01-01 00:00:00
abstract::Sex ratio theory posits that the adaptive proportion of male to female gametocytes of a malaria parasite within the vertebrate host depends on the degree of inbreeding within the vector. Gametocyte sex ratio could be phenotypically flexible, being altered based on the infection's clonal diversity, and thus likely inbr...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182003004207
更新日期:2004-01-01 00:00:00
abstract::Ticks have numerous natural enemies, but only a few species have been evaluated as tick biocontrol agents (BCAs). Some laboratory results suggest that several bacteria are pathogenic to ticks, but their mode of action and their potential value as biocontrol agents remain to be determined. The most promising entomopath...
journal_title:Parasitology
pub_type: 杂志文章,评审
doi:10.1017/s0031182004005219
更新日期:2004-01-01 00:00:00
abstract::In this article I begin with a few current ideas on some physiological factors that influence mating choice in insects. Emphasis is placed on those proteins produced by the male reproductive accessory glands which increase female fecundity and reduce her receptivity to subsequent males. Strategies used by late-arrivin...
journal_title:Parasitology
pub_type: 杂志文章,评审
doi:10.1017/s0031182004004846
更新日期:2004-01-01 00:00:00
abstract::High throughput technologies continue to develop in response to the challenges set by the genome projects. This article discusses how the techniques of both high throughput screening (HTS) and synthesis can influence research in parasitology. Examples of the use of targeted and phenotype-based HTS using unbiased compo...
journal_title:Parasitology
pub_type: 杂志文章,评审
doi:10.1017/S0031182004007073
更新日期:2004-01-01 00:00:00
abstract::Studies of the kinetics of adenosine transport were carried out on the P1 and P2 transporters of drug-sensitive Trypanosoma evansi and its cloned derivative, resistant to the melaminophenyl arsenical Mel CY. Characterization of adenosine uptake was made by estimation of the maximum concentration taken up at time infin...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s003118200300413x
更新日期:2003-12-01 00:00:00
abstract::In theory, the age at which maturation occurs in parasitic nematodes is inversely related to pre-maturational mortality rate, and cross-species data on mammalian nematodes are consistent with this prediction. Immunity is a major source of parasite mortality and parasites stand to gain sizeable fitness benefits through...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182003003998
更新日期:2003-11-01 00:00:00
abstract::We studied infection dynamics of Plasmodium chabaudi in mice infected with 3 genetically distinct clones--1 less virulent than the other 2--either on their own or in mixtures. During the acute phase of infection, total numbers of asexual parasites in mixed-clone infections were equal to those produced by the 3 clones ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182003004001
更新日期:2003-11-01 00:00:00
abstract::A distinct 8 kDa calcium-binding protein (CaBP) is preferentially expressed at the cercarial stage during the life-cycle of the schistosome. Available data indicate that this CaBP may be associated with tissue/organ remodelling (involving protein degradation and synthesis of new proteins) during transformation of the ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182003003858
更新日期:2003-10-01 00:00:00
abstract::Thirty-one stocks of Trypanosoma cruzi, the agent of Chagas disease, representative of the genetic variability of the 2 principal lineages, that subdivide T. cruzi, were selected on the basis of previous multilocus enzyme electrophoresis analysis using 21 loci. Analyses were performed with lower numbers of loci to exp...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182003003573
更新日期:2003-09-01 00:00:00
abstract::Chemotactic responses of Strongyloides stercoralis infective larvae (L3) to sodium chloride (NaCl) were investigated by recording larval tracks on a saline gradient in agarose. On agarose, larvae migrated randomly, whereas when placed at 0.01 m NaCl larvae moved to approximately 1.1 m NaCl where they turned, headed do...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182003003433
更新日期:2003-08-01 00:00:00
abstract::We have studied the genomic organization and transcription of the histone H2A genes in the protozoan parasite Leishmania infantum. In the parasite genome 2 gene clusters exist, each containing 3 H2A gene copies. Sequence analyses showed the existence of significant sequence divergence among the H2A genes, mainly in th...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182003003445
更新日期:2003-08-01 00:00:00
abstract::A beta-1,3-glucan-binding lectin from the penetration glands of Diplostomum pseudospathaceum cercariae was isolated by affinity chromatography using yeast glucan and curdlan as affinity matrices. Further purification to homogeneity was performed by cation-exchange chromatography. The protein migrated as a double band ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182003003305
更新日期:2003-07-01 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
pub_type: 杂志文章
doi:
更新日期:2003-06-01 00:00:00
abstract::Most sylvatic species of Trichinella are known to have poor infectivity to rats, but in the present study oral administration of bile from other hosts appeared to modify this infectivity. A total of 75 rats were inoculated in groups of 25 with 3 species of Trichinella (T. spiralis, T. nativa, and T. nelsoni) and each ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s003118200300307x
更新日期:2003-05-01 00:00:00
abstract::A new histozoic species of myxosporean was found to infect the gill filaments, gut, kidney and liver of the freshwater teleost Leporinus friderici, collected from the estuarine region of the Amazon, near the city of Belém, Brazil. The plasmodia show asynchronous development, at any one time composed of mature spores a...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182003002944
更新日期:2003-04-01 00:00:00
abstract::As has been shown previously, immunologically intact mice with patent Schistosoma mansoni infections had a significantly lower mean platelet number than intact uninfected mice (P<0.0001). However, platelet numbers in T-cell deprived mice with patent infections were not significantly different from those in uninfected ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182002002858
更新日期:2003-03-01 00:00:00
abstract::Philasterides dicentrarchi is a histophagous ciliate causing systemic scuticociliatosis in cultured turbot. This study demonstrates that turbot which survive this disease have serum antibodies that recognize ciliary antigens of this ciliate in ELISA and immobilize/agglutinate the ciliate in vitro. Mouse sera raised ag...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182002002688
更新日期:2003-02-01 00:00:00
abstract::Risk factors for the transmission of Echinococcus multilocularis to humans operate at a range of spatial scales. Over a large area, such as China, regional scale risk is correlated with variation in climatic conditions because of its effect on the spatial distribution of landscapes that can support E. multilocularis t...
journal_title:Parasitology
pub_type: 杂志文章,评审
doi:
更新日期:2003-01-01 00:00:00
abstract::Eight major reviews are cited to indicate a recent knowledge explosion on the use of marine parasites as potential indicators of pollution. A literature update is given for the period 1995-2001. An analysis of the publications cited is used to provide 10 refined criteria for selecting parasites as indicator/monitor sp...
journal_title:Parasitology
pub_type: 杂志文章,评审
doi:10.1017/s0031182003003640
更新日期:2003-01-01 00:00:00
abstract::This study reports that inhibition of Leishmania Topo-I with the minor groove-binding ligands (MGBLs) Hoechst 33342 (Ho342) blocks parasite growth in culture by mechanisms involving DNA breakage. While Ho342 inhibited the replication of several species of Leishmania in a dose- and time-dependent manner, Ho258 was not ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182002002524
更新日期:2003-01-01 00:00:00
abstract::Due to shared characteristics with snail haemocytes, the Biomphalaria glabrata embryonic (Bge) cell line has been used as a model in vitro system for the study of snail-trematode interactions. In this study, Bge cells were used to characterize the adherence of snail host cells to schistosome primary sporocysts, and to...
journal_title:Parasitology
pub_type: 杂志文章
doi:
更新日期:2002-12-01 00:00:00
abstract::If parasitic infection is a driving force in female mate choice, then females should preferentially select parasite-free males. The role of infection on female mate choice in mammals was assessed using a 3-chambered apparatus. A female CD-1 mouse was allowed to choose between 2 tethered male mice, 1 uninfected and 1 i...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s003118200200224x
更新日期:2002-11-01 00:00:00
abstract::Perkinsus marinus is a protozoan responsible for dramatic mortality in the Eastern oyster, Crassostrea virginica, but not in the Pacific oyster, C. gigas. To understand the host-parasite relationship, we inoculated P. marinus trophozoites into the shell cavity of C. gigas and measured, over 2 months, (i) intensity of ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182002002135
更新日期:2002-10-01 00:00:00
abstract::Previous studies of mating interactions between schistosome species from different evolutionary lineages in mice showed that mating is not random: heterospecific pairs form but, given the choice, the preference is for homospecific partners. Mating competition and change of mate were also demonstrated. Schistosoma mans...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182002002111
更新日期:2002-09-01 00:00:00
abstract::The surface coat of the 2nd-stage juveniles (J2) of plant-parasitic nematodes is considered to be involved in interactions with microorganisms in the soil and rhizosphere, as well as with the host plant. Characterization of surface antigens might be important in the development of new nematode control strategies. In t...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182002001907
更新日期:2002-08-01 00:00:00
abstract::A cDNA clone codifying ribosomal protein L25 was isolated from a Leishmania braziliensis cDNA gene library. The alignment of the amino acid sequence deduced from this gene with other proteins revealed that this protein is related to the L23/25 rihosomal protein family. This is so because this protein shows, in its C-t...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182002001804
更新日期:2002-07-01 00:00:00