abstract：:Numerical alterations of circulating lymphocytes were investigated in 37 Brazilian patients with uncomplicated Plasmodium falciparum malaria and in a group of 15 healthy controls. The number of CD4+ T helper/inducer cells was significantly lower in patients than controls, whereas absolute numbers of CD8+ suppressor/cy...

journal_title：Acta tropica

authors： Kremsner PG,Feldmeier H,Zotter GM,Jansen-Rosseck R,Graninger W,Rocha RM,Bienzle U

更新日期：1989-10-01 00:00:00

abstract：:Using immunoassay and immunoblotting approaches, antibodies to Sj26, a glutathione S-transferase molecule (Mr = 26,000) of Schistosoma japonicum worms that is a vaccine candidate, have been sought in three large human serum banks. For these studies, a near-native recombinant Sj26 molecule produced in Escherichia coli ...

journal_title：Acta tropica

authors： Lightowlers MW,Mitchell GF

更新日期：1989-07-01 00:00:00

abstract：:In an endemic area for Wuchereria bancrofti filariasis in the Nile Delta, survival of adult female Culex pipiens was estimated by parity rate, mosquito infection and infectivity rates. Infection rates and 4th instar larval populations, as well as infection and parity rates, were linearly correlated. Infectivity correl...

journal_title：Acta tropica

authors： Gad AM,Feinsod FM,Soliman BA,el Said S

更新日期：1989-05-01 00:00:00

abstract：:An experiment was conducted to determine, under different conditions, the capacity of young adult East African goats to eliminate intravenously inoculated [75Se]selenomethionine-labelled Trypanosoma brucei from the bloodstream. Over 80% of labelled trypanosomes, preincubated for 1 h in inactivated normal goat serum, w...

journal_title：Acta tropica

authors： Whitelaw DD,Bell IR,Holmes PH

更新日期：1989-03-01 00:00:00

abstract：:The larval development of Schistosoma rodhaini in Biomphalaria glabrata presents two features of interest. The first concerns the migration of daughter sporocysts: only a fraction of the daughter sporocysts produced by the mother sporocyst migrate directly towards the digestive gland of the snail and become cercarioge...

journal_title：Acta tropica

authors： Théron A,Touassem R

更新日期：1989-01-01 00:00:00

abstract：:A large-scale control trial against Glossina palpalis palpalis was carried out in the Congo using a new trapping technique. In the same way a test related to the experimental utilization of sentinel animals was performed, concurrently to the classical epidemiological and entomological evaluation. 564 domestic animals ...

journal_title：Acta tropica

authors： Gouteux JP,Toudic A,Sinda D

更新日期：1988-12-01 00:00:00

abstract：:Five hundred and sixty teneral male Glossina morsitans centralis were fed, at the height of parasitaemia, on a goat infected with Trypanosoma brucei brucei. Thereafter, the tsetse were divided into 4 equal groups. Group I was fed in vitro once weekly for 4 weeks and Group II twice weekly for 4 weeks on fresh defibrina...

journal_title：Acta tropica

authors： Nantulya VM,Moloo SK

更新日期：1988-06-01 00:00:00

abstract：:A high performance liquid chromatographic (HPLC) method for the determination of the antitheilerial drugs parvaquone and buparvaquone in plasma was developed. Both compounds were extracted from plasma with ether. After evaporating the extracts to dryness the residue was dissolved in methanol and an aliquot was injecte...

journal_title：Acta tropica

authors： Kinabo LD,Bogan JA

更新日期：1988-03-01 00:00:00

abstract：:The ultrastructure of Leishmania aethiopica parasites and their host cells was investigated in lesions of 7 patients suffering from diffuse cutaneous leishmaniasis (DCL) and in lesions of 4 patients with localized cutaneous leishmaniasis (LCL). The appearance of host cells and parasites varied considerably in both dis...

journal_title：Acta tropica

authors： Schurr E,Wunderlich F,Tadesse G

更新日期：1987-12-01 00:00:00

abstract：:Immune sera obtained from either BALB/c mice (susceptible) at 7 weeks, or C57BL/6 mice (resistant), at 7 weeks after infection with L. m. amazonensis, were effective in increasing internalization of homologous promastigotes into starch-induced peritoneal macrophages (from both mouse strains). Both the internalization ...

journal_title：Acta tropica

authors： Reis MG,Roters SB,Barral-Netto M

更新日期：1987-09-01 00:00:00

abstract：:From 1982 to 1984 170 children of Kikwawila village (Kilombero district, Tanzania) were followed for nutritional (anthropometric measures, hematocrit, serum retinol, prealbumin, and zinc concentrations), parasitological (malaria parasitemia, urinary schistosomiasis, intestinal parasites) and immunological characterist...

journal_title：Acta tropica

authors： Stürchler D,Tanner M,Hanck A,Betschart B,Gautschi K,Weiss N,Burnier E,Del Giudice G,Degrémont A

更新日期：1987-06-01 00:00:00

abstract：:Cattle were exposed to natural trypanosome challenge in an area of high Glossina density (Samandéni, Burkina Faso) for various periods of time during 1982, 1983, 1984 and 1985. All of 30 Zebu proved to be sensitive to trypanosomiasis i.e. they died or were treated in extremis in 10 +/- 4 weeks. Twenty-one (31%) Baoulé...

journal_title：Acta tropica

authors： Roelants GE,Fumoux F,Pinder M,Queval R,Bassinga A,Authié E

更新日期：1987-03-01 00:00:00

abstract：:A comparative study of egg morphology of Schistosoma mansoni carried out between 9 parasite populations from Guadeloupean foci demonstrates the existence of an intraspecific polymorphism. Three types of lateral spined eggs have been described and their relative proportions observed between populations are related to t...

journal_title：Acta tropica

authors： Théron A

更新日期：1986-12-01 00:00:00

abstract：:The levels of immunoglobulin classes (IgG, IgM and IgA) along with B lymphocyte population size were estimated in 24 kala-azar (KA) patients and results were compared with those obtained from 30 controls. A marked increase in the level of IgG and to a lesser extent in that of IgM was noted in the sera of KA patients. ...

journal_title：Acta tropica

authors： Neogy AB,Nandy A,Dastidar BG,Chowdhury AB

更新日期：1986-09-01 00:00:00

abstract：:Four techniques for the detection and quantification of Dirofilaria immitis microfilariae in peripheral blood were compared, namely the conventional thick smear, thick films prepared by cytocentrifugation, filtration of blood through polycarbonate membranes, and density gradient centrifugation followed by membrane fil...

journal_title：Acta tropica

authors： Feldmeier H,Bienzle U,Schuh D,Geister R,Guggenmoos-Holzmann I

更新日期：1986-06-01 00:00:00

abstract：:Psychodopygus wellcomei (Diptera: Psychodidae), vector of Leishmania braziliensis braziliensis - causative agent of cutaneous leishmaniasis in Brazil, cannot be distinguished from sympatric P. complexus either by morphometrics or isoenzyme profiles. We report here the use of cuticular hydrocarbon analysis in the succe...

journal_title：Acta tropica

authors： Ryan L,Phillips A,Milligan P,Lainson R,Molyneux DH,Shaw JJ

更新日期：1986-03-01 00:00:00

abstract：:Anti-T. dionisii and anti-T. vespertilionis monoclonal antibodies secreted by 17 hybridoma clones were tested against various strains of T. dionisii, T. vespertilionis, T. cruzi and T. cruzi marinkellei. Strain and species specific antigens were detected for the homologous immunizing strains. The common antigenic dete...

journal_title：Acta tropica

authors： Petry K,Baltz T,Schottelius J

更新日期：1986-03-01 00:00:00

abstract：:393 primary school children were screened for Schistosoma haematobium using four indirect techniques (a) history of haematuria, (b) visual appearance of urine and use of chemical reagent strips to detect presence of (c) blood and (d) protein in urine. Results showed that the use of chemical reagent strips for the dete...

journal_title：Acta tropica

authors： Sarda RK,Minjas JN,Mahikwano LF

更新日期：1985-09-01 00:00:00

abstract：:During a period of 2 years, the ecology of Bulinus globosus was studied in 8 habitats in two streams near Ifakara, SE-Tanzania. The relative Bulinus densities were followed monthly. Two different methods for estimating snail densities (man/time vs. palmleaf traps) gave comparable results. Bulinus densities were consta...

journal_title：Acta tropica

authors： Marti HP,Tanner M,Degrémont AA,Freyvogel TA

更新日期：1985-06-01 00:00:00

abstract：:Definitions of the term 'challenge' as applied to the African trypanosomiases are reviewed. Data from one West and one East African site show simple linear relationships between the incidence of trypanosomiasis in both humans and animals, and either the amount of man-tsetse contact, or the Apparent Density of flies. D...

journal_title：Acta tropica

authors： Rogers DJ

更新日期：1985-03-01 00:00:00

abstract：:A randomized double-blind study was performed to compare the side effects of long-term chemoprophylaxis of malaria with Fansidar (1 tablet a week) with those of a 300-mg weekly chloroquine regimen. This study was designed as a field trial with Austrian industrial workers in Nigeria and included 173 volunteers, 86 taki...

journal_title：Acta tropica

authors： Stemberger H,Leimer R,Wiedermann G

更新日期：1984-12-01 00:00:00

abstract：:Three experimental groups of male Glossina morsitans morsitans were infected at their first feed with procyclic forms of different stocks of Trypanosoma congolense and subsequently maintained on a diet containing rabbit antiserum to one of these stocks. Control flies were similarly infected but were then maintained on...

journal_title：Acta tropica

authors： Maudlin I,Turner MJ,Dukes P,Miller N

更新日期：1984-09-01 00:00:00

abstract：:In the presence of light and oxygen, rose bengal causes oxidative damage to Trypanosoma cruzi. The production of lipid hydroperoxides was demonstrated by thin-layer chromatography, and severe ultrastructural alterations compatible with an increased permeability of the cells, which led to gradual osmotic swelling and u...

journal_title：Acta tropica

authors： Cruz FS,Lopes LA,De Souza W,Moreno SN,Mason RP,Docampo R

更新日期：1984-06-01 00:00:00

abstract：:Four-day-old epimastigote culture forms of Trypanosoma cruzi, Trypanosoma rangeli and Trypanosoma conorhini were tested with 21 lectins. Furthermore T. conorhini was incubated with the following sera: rat, Wistar HAN, germ free; normal fresh hen, rat and human serum. T. rangeli was agglutinated only by the D-mannose s...

journal_title：Acta tropica

authors： Schottelius J,Müller V

更新日期：1984-03-01 00:00:00

abstract：:In order to investigate whether the autoantibody production in the course of African trypanosomiasis is the result of a generalized polyclonal activation or if it is a specific (antigen-dependent) phenomenon we looked for the presence of autoantibodies directed against autoantigens likely to be released (DNA) or unlik...

journal_title：Acta tropica

authors： Daniel-Ribeiro C,Tirard S,Monjour L,Homberg JC,Gentilini M

更新日期：1983-12-01 00:00:00

abstract：:The formation of metacyclic trypomastigotes of Trypanosoma cruzi in cultures initiated by freshly isolated bloodstream trypomastigotes was studied using three strains of parasites (Peru, CL, and Y) and two different media (L-15 and Grace's medium). Serum (10% newborn calf serum) and various sugars were required for in...

journal_title：Acta tropica

authors： Ucros H,Granger B,Krassner SM

更新日期：1983-06-01 00:00:00

abstract：:Macrophages infected with amastigotes of Leishmania mexicana mexicana as compared to normal macrophages show decreased migration both randomly and through a 5 microns pore in response to a known chemotaxin, an increased ability to pinocytose and an increased bactericidal ability. Unless very heavily parasitized their ...

journal_title：Acta tropica

authors： Bray RS,Heikal B,Kaye PM,Bray MA

更新日期：1983-03-01 00:00:00

abstract：:The parasitological techniques currently in use for the diagnosis of African trypanosomiasis were compared in a series of experiments for their capacity to detect Trypanosoma congolense, T. vivax and T. brucei in the blood of cattle. The darkground/phase contrast buffy coat method proved to be more sensitive than the ...

journal_title：Acta tropica

authors： Paris J,Murray M,McOdimba F

更新日期：1982-12-01 00:00:00

abstract：:The coadministration of tubercidin and ethidium to mice infected with Trypanosoma gambiense gave a better parasite clearance than either of the single drugs. The combination was also more toxic to the mice but the inclusion of nitrobenzylthioinosinate in the therapy significantly alleviated the toxicity of the drug co...

journal_title：Acta tropica

authors： Ogbunude PO,Ikediobi CO

更新日期：1982-09-01 00:00:00

abstract：:We sought to determine if there was any relationship between ABO blood groups and susceptibility to malaria and urinary schistosomiasis. In Epe and outlying villages in south-western Nigeria, we examined 681 people for their blood groups, malaria parasitemia and for the presence of Schistosoma haematobium eggs in thei...

journal_title：Acta tropica

authors： Kassim OO,Ejezie GC

更新日期：1982-06-01 00:00:00

abstract：:The formation of Babesia ovis sporozoites in salivary gland cells of the vector tick Rhipicephalus bursa was studied by electron microscopy. The kinetics of B. ovis were found lying intracellularly on the second day after infestation (a.i.) of the ticks. The parasites enlarged rapidly losing all features of the motile...

journal_title：Acta tropica

authors： Moltmann UG,Mehlhorn H,Friedhoff KT

更新日期：1982-03-01 00:00:00

abstract：:Accumulation, degradation and excretion by the host of helminth metabolic end products, such as branched-chain volatile fatty acids are poorly studied although they play an appreciable role in host-parasite interactions and, being detectable in excreta, provide a reliable diagnostic test for at least some helminthiase...

journal_title：Acta tropica

authors： Soprunov FF,Lurje AA,Laynis YaYa,Soprunova NYa,Alieva HH

更新日期：1981-12-01 00:00:00

abstract：:Homogenates of different developmental stages of the filarial parasites, L. carinii, emulsified in Freund's complete adjuvant have been examined for their efficacy in conferring immunity to the infection in the albino rats. The results revealed that sonicated preparations of microfilariae and infective larvae induce h...

journal_title：Acta tropica

authors： Mehta K,Subrahmanyam D,Sindhu RK

更新日期：1981-09-01 00:00:00

abstract：:We studied the effect of treatment with diethylcarbamazine (DEC) on immune responses to parasite antigens in humans infected with Brugia malayi. In vitro lymphocyte proliferative responses to microfilarial antigens increased in patients who became amicrofilaremic after treatment with DEC. No changes in reactivity were...

journal_title：Acta tropica

authors： Piessens WF,Ratiwayanto S,Piessens PW,Tuti S,McGreevy PB,Darwis F,Palmieri JR,Koiman I,Dennis DT

更新日期：1981-09-01 00:00:00

abstract：:Artificial feeding of the insects with whole blood containing trypomastigotes resulted in triatome infection; the parasites were present in the host feces after 15--30 days and, when inoculated into mice, elicited parasitemia in 100% of the cases and deaths in 20--70%. This mortality indicates a reduction of the origi...

journal_title：Acta tropica

authors： Lammel EL,de Isola EL,Korn C,Gonzalez Cappa SM

更新日期：1981-06-01 00:00:00

abstract：:A survey of 5,595 primary school children in Lagos State showed that most of the children were over-loaded with parasitic infestations which included malaria (37.7%), schistosomiasis (13.4%). ascariasis (74.2%), trichuriasis (75.8%), hookworm (29.5%) and tungiasis (49.5%). Multiple infections were observed with about ...

journal_title：Acta tropica

authors： Ejezie GC

更新日期：1981-03-01 00:00:00

abstract：:The fluid mechanics of the flow of blood through the labrum of Glossina is described in uninfected and trypanosome infected flies. The flow is characterised by the Reynolds number, and a frequency parameter for the pulsating flow and non-newtonian viscosity effects are considered. The effects of colonies of trypanosom...

journal_title：Acta tropica

authors： Livesey JL,Molyneux DH,Jenni L

更新日期：1980-06-01 00:00:00

abstract：:A tick/rickettsial survey in various parts of Switzerland revealed the presence of a new, hitherto undescribed spotted fever group rickettsia ("Swiss agent") in up to 11.7% of I. ricinus collected off vegetation. Infection in ticks was found to be generalized with rickettsiae developing intracellularly and occasionall...

journal_title：Acta tropica

authors： Burgdorfer W,Aeschlimann A,Peter O,Hayes SF,Philip RN

更新日期：1979-12-01 00:00:00

abstract：:The midguts of female mosquitoes, Culex tarsalis, were examined electron microscopically during the digestion of a meal from either artificial sources (i.e., 100% serum or defibrinated rabbit blood) or vertebrate hosts. Intense intercellular staining was apparent when the meal was derived from the vertebrate host or d...

journal_title：Acta tropica

authors： Houk EJ,Hardy JL

更新日期：1979-09-01 00:00:00

abstract：:The concept is expressed that Borrelia developed as symbionts of ticks (especially Argasidae) but act as parasites in mammals and birds ... borrelial reservoirs and amplifiers following bites by infected ticks. Certain tick borreliae may multiply in lice but one Borrelia has evolved into a n independent species (B. re...

journal_title：Acta tropica

authors： Hoogstraal H

更新日期：1979-06-01 00:00:00