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::Multiplication of virulent and avirulent Leishmania donovani promastigotes was inhibited by brain heart infusion broth (BHI) (3.7%) supplemented with haemolysed or whole blood (2.5-10%) or heat-inactivated foetal bovine serum (HIFBS) (10-20%). Peptone, glutamine, tryptophan, purine bases, ribonucleosides, deoxyribonuc...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182097001340
更新日期:1997-09-01 00:00:00
abstract::We estimate the incidence rate, serological conversion rate and basic case reproduction number (R0) of Leishmania infantum from a cohort study of 126 domestic dogs exposed to natural infection rates over 2 years on Marajó Island, Pará State, Brazil. The analysis includes new methods for (1) determining the number of s...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182097001200
更新日期:1997-08-01 00:00:00
abstract::Two cDNAs encoding cysteine proteinases were isolated from a cDNA library constructed from feeding females of Heterodera glycines. The library was screened with a cysteine proteinase gene fragment originally amplified from cDNA of H. glycines. Database searches predict that 1 cDNA (hgcp-I) encodes a cathepsin L-like p...
journal_title:Parasitology
pub_type: 杂志文章
doi:
更新日期:1997-06-01 00:00:00
abstract::A 30-h in vitro susceptibility test of Plasmodium falciparum wild isolates to artemisinin, chloroquine, sulfadoxine/pyrimethamine and mefloquine was performed in Kibaha, Tanzania. A sigmoid Emax model was fitted to all data for each isolate and drug combination. Artemisinin and mefloquine exhibited 100% growth inhibit...
journal_title:Parasitology
pub_type: 杂志文章
doi:
更新日期:1997-06-01 00:00:00
abstract::An 8-point visual index was developed for Oil Red O staining of neutral lipids in infective juveniles (IJs) of Steinernema carpocapsae (A11), S. riobravis (Biosys 355), S. feltiae (UK76) and S. glaseri (NC). The visual index was found to be a reliable and rapid method for determining the relative neutral lipid content...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182096008748
更新日期:1997-05-01 00:00:00
abstract::In areas where malaria is endemic, helminthic infections, caused by intestinal or filarial parasites, commonly coexist with malaria in the same individual. This study investigates the course of Plasmodium berghei malaria infection in CBA/J mice inoculated with irradiated attenuated 3rd-stage larvae (L3) of Brugia paha...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182096008566
更新日期:1997-04-01 00:00:00
abstract::The 4-aminoquinolines chloroquine (CQ) and amodiaquine (AM) were used to treat Gambian children with uncomplicated falciparum malaria in a randomized drug trial. Blood samples were taken immediately before treatment (day 0), and at day 7 and day 28 after treatment. Samples from those parasitologically positive at day ...
journal_title:Parasitology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1017/s0031182096008487
更新日期:1997-03-01 00:00:00
abstract::Schistosoma mansoni egg counts by faecal examination vary considerably and are not very sensitive, so prevalences are underestimated. The distribution of egg counts can adequately be described by a stochastic model which distinguishes variation in counts between persons and variation in repeated counts within a person...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182096008207
更新日期:1997-02-01 00:00:00
abstract::We examine the evolution of microparasites in response to the immune system of vertebrate hosts. We first describe a simple model for an acute infection. This model suggests that the within-host dynamics of the microparasite will be a 'race' between parasite multiplication and a clonally expanding response by the host...
journal_title:Parasitology
pub_type: 杂志文章,评审
doi:10.1017/s003118209700200x
更新日期:1997-01-01 00:00:00
abstract::A metabolic pathway known as the mannitol cycle has been identified in Eimerian parasites. The pathway is a shunt off of the glycolytic pathway at fructose-6-phosphate (F6P). Two enzymes convert F6P to mannitol and two other enzymes are responsible for converting mannitol back to F6P when it is utilized. Although the ...
journal_title:Parasitology
pub_type: 杂志文章,评审
doi:
更新日期:1997-01-01 00:00:00
abstract::Intra-erythrocytic stages of malaria parasites can alter the surface of their host cells and release toxins which induce the production of cytokines, which in turn can up- or down-regulate the expression of adhesion receptors on the surface of microvascular endothelial cells. New adhesion receptors on endothelial cell...
journal_title:Parasitology
pub_type: 杂志文章,评审
doi:10.1017/s0031182097002345
更新日期:1997-01-01 00:00:00
abstract::Oocysts of Cryptosporidium parvum showed relatively low levels of SOD activity. The SOD which had a pI of 4.8 and an approximate molecular weight of 35 kDa appeared to be iron dependent. Catalase, glutathione transferase, glutathione reductase and glutathione peroxidase activity could not be detected, nor could trypan...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182096008037
更新日期:1997-01-01 00:00:00
abstract::Trichinella spiralis larvae infect and develop within skeletal muscle cells causing major changes to their mechanical properties. The aim of this investigation was to determine the effects of T. spiralis on the power output and fatigue resistance of the mammalian diaphragm under conditions simulating in vivo operation...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000067585
更新日期:1996-12-01 00:00:00
abstract::Theileria annulata infects and reversibly transforms bovine leucocytes. The parasite-transformed cells are immortalized, metastatic and express a number of metalloproteinases including matrix metalloproteinase 9 which they secrete. All the metalloproteinases observed on substrate gels are inhibited by tissue inhibitor...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000081518
更新日期:1996-11-01 00:00:00
abstract::A large database on the transmission of a stabilate of the Theileria parva Muguga stock from one breed of cattle using two stocks of Rhipicephalus appendiculatus, Muguga and Ol Pejeta was developed and analysed. Factors associated with the ticks and cattle, and the infections developing in cattle were studied in relat...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000082020
更新日期:1996-09-01 00:00:00
abstract::Little is known about the effects of infection with Borrelia burgdorferi, the bacterium that causes Lyme disease, on its tick vectors. The purpose of this study was to determine the behavioural and ecological effects of infection by the bacterium in nymphal and adult black-legged (Ixodes scapularis) ticks. We found th...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000066336
更新日期:1996-08-01 00:00:00
abstract::A field trial was conducted to evaluate the potential of the nematode-destroying fungus Duddingtonia flagrans to control free-living stages of horse strongyles. In late Spring 2 groups of horses (yearlings) with mixed infections of strongyles were allowed to contaminate 2 equal-sized pastures. One of the groups (F) re...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s003118200006621x
更新日期:1996-07-01 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
pub_type: 杂志文章
doi:10.1017/s0031182000066142
更新日期:1996-06-01 00:00:00
abstract::Expression of metalloprotease activities during metacyclogenesis of a series of strains and clones of Trypanosoma cruzi was investigated using SDS-polyacrylamide gel electrophoresis with a range of different co-polymerized proteolytic substrates. A complex pattern of metalloprotease expression, with considerable quant...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000066622
更新日期:1996-04-01 00:00:00
abstract::Vitellogenin synthesis by the fat body has been monitored using in vitro culture and immunoprecipitation. This system was found to be efficient for measuring vitellogenin production in both non-infected Tenebrio molitor and those infected with Hymenolepis diminuta. In fat bodies from infected beetles, vitellogenin pro...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000066658
更新日期:1996-04-01 00:00:00
abstract::In order to study the effects of acclimatization of Plasmodium in beta-thalassaemic mice, we used a mouse model of beta-thalassaemia (DBA/2J/beta-thal/beta-thal), similar to that observed in humans. We acclimatized 3 rodent malarias (P. berghei, P. chabaudi and P. yoelii) in DBA/2J and DBA/2J/beta-thal mice lines, by ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000065781
更新日期:1996-03-01 00:00:00
abstract::A rapid, visually read, dot-ELISA developed for the detection and differentiation of trypanosome species in tsetse flies (Glossina spp.), was field tested alongside the standard fly dissection method on a range in south eastern Kenya. Of 104 G. pallidipes dissected, 2 were found to be infected with trypanosomes in the...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000084778
更新日期:1996-02-01 00:00:00
abstract::The radiation-attenuated schistosome vaccine induces a high level of protective immunity in rodents. In order to assess its potential relevance to man, we have tested its efficacy in the non-human primate Papio anubis. A vaccination regime consisting of 3 exposures of approximately 9000 cercariae irradiated with 30 or...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000065057
更新日期:1996-01-01 00:00:00
abstract::Analysis of the electrical properties of neurons in the motornervous system of Ascaris sutom suggests that it is largely an analogue system. The motorneurons do not conduct action potentials and they release transmitter tonically at their normal resting potential; transmitter release is increased or decreased as a con...
journal_title:Parasitology
pub_type: 杂志文章,评审
doi:10.1017/s0031182000077921
更新日期:1996-01-01 00:00:00
abstract::Sequence comparisons have recently shown that the Schistosoma mansoni protein Sm32 is similar to asparaginyl endoproteinases, a novel family of cysteine proteinases, of which the legumains from legumes are the best characterized. By synthesizing and employing fluorogenic peptide substrates for the specific detection o...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000077052
更新日期:1995-12-01 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
pub_type: 杂志文章
doi:10.1017/s0031182000065963
更新日期:1995-11-01 00:00:00
abstract::Glycans at the surface of adult Schistosoma mansoni were investigated with gold-labelled lectins. The fragile complex of the glycans with the outer membranes could be preserved for electron microscopy by avoiding extensive pre-fixation with aldehydes and by introducing osmium-ferrocyanide as a membrane fixative. Male ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000081877
更新日期:1995-09-01 00:00:00
abstract::A guinea-pig immunoglobulin-G linked agarose column was used to detect the immunoglobulin-G binding proteins (IGBP) in the ixodid ticks, Rhipicephalus appendiculatus, Amblyomma variegatum and Ixodes hexagonus. IGBPs were found in salivary gland extract (SGE) of the unfed ticks of all 3 species. The sizes of the IGBPs,...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000064908
更新日期:1995-08-01 00:00:00
abstract::SIV rats infected with a high dose (50,000 oocysts) of Eimeria nieschulzi displayed clinical symptoms of coccidiosis such as diarrhoea (days 6 and 7 post-primary infection) and weight loss (days 6-8 post-primary infection) and were completely immune to challenge with a similar dose. The ability of rats to produce tumo...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000064593
更新日期:1995-07-01 00:00:00
abstract::Aspects of vitellogenesis, known to be controlled by juvenile hormone, are adversely affected by Hymenolepis diminuta infection of Tenebrio molitor, in spite of circulating titres of the hormone remaining unchanged. It has therefore been proposed that juvenile hormone binding is disrupted at the tissue site level. Juv...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000065288
更新日期:1995-06-01 00:00:00
abstract::In a population of copepods (Cyclops strenuus abyssorum), with a naturally high prevalence of infection with procercoids of Diphyllobothrium spp., no difference in body size was found between infected and uninfected hosts. However, a significant reduction in the reproductive capacity of infected females was observed, ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000064738
更新日期:1995-05-01 00:00:00
abstract::The behavioural responses of Onchocerca lienalis microfilariae (mf) to tissue factors of the surrogate black fly host, Simulium vittatum, were studied using a novel in vitro bioassay. Mf accumulated towards thoracic tissues to a density 4 times higher than towards abdominal tissues, despite the larger surface area and...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000080914
更新日期:1995-04-01 00:00:00
abstract::Patterns of genetic subdivision in parasite populations can provide important insights into transmission processes and complement information obtained using traditional epidemiological techniques. We describe mitochondrial sequence variation in 265 Ascaris collected from 62 individual hosts (humans and pigs) from 35 h...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s003118200006399x
更新日期:1995-02-01 00:00:00
abstract::Small vessels showing inflammatory cell infiltrates were invariably observed in the vicinity of intact Toxoplasma tissue cysts within the brains of mice congenitally infected with the protozoan. Lymphocytes were observed in intimate contact with the luminal aspect of the endothelium, penetrating into the thickened bas...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000063873
更新日期:1995-02-01 00:00:00
abstract::The amitochondriate parasitic protist Trichomonas vaginalis can utilize either glucose or maltose as carbon and energy source. The mechanisms of maltose utilization were explored with uptake experiments using radio-isotope labelled maltose in combination with the silicone-oil centrifugation technique and enzymatic ass...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000081026
更新日期:1995-01-01 00:00:00
abstract::Infectious agents have considerable potential to regulate or constrain the population growth of vertebrate hosts in natural habitats. A broad theoretical framework provides many insights into how the biology of the parasite and the demography of the host interact to determine this impact. It may manifest itself as a s...
journal_title:Parasitology
pub_type: 杂志文章,评审
doi:10.1017/s003118200007579x
更新日期:1995-01-01 00:00:00
abstract::The development of a successful vaccine depends not only on the production of the vaccine itself, but also on the design pf the vaccination programme. This involves a better understanding of the epidemiology of the disease to be controlled, the delivery system to be used and the costs involved. This review focuses on ...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000001499
更新日期:1995-01-01 00:00:00
abstract::Trials were carried out to study the humoral immune response of blackflies to filariae following infection using the intrathoracic injection technique. An induced 66 kDa protein was abundant in the haemolymph of the European species Simulium ornatum following infection with bovine Onchocerca lienalis. This protein was...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000076538
更新日期:1994-12-01 00:00:00
abstract::Infection of breeding hens with Eimeria maxima induces production of Eimeria-specific IgG antibodies which are transferred to hatchlings via the egg yolk and confer a high degree of maternal immunity against homologous challenge and partial immunity to infection with another important species, Eimeria tenella. As an e...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000076423
更新日期:1994-12-01 00:00:00
abstract::A multi-subunit antigen (native M(r) > 200 kDa, reduced M(r) 97-100 kDa) has been identified in homogenates of Trichinella spiralis larvae using affinity-purified rabbit anti-keyhole limpet haemocyanin (KLH) antibodies and its cross-reactivity with KLH was confirmed by competition blotting. The antigen was not present...
journal_title:Parasitology
pub_type: 杂志文章
doi:10.1017/s0031182000080793
更新日期:1994-11-01 00:00:00