Abstract:
:Two isolates of Plasmodium falciparum (F 32 and K 1) were tested against sulfadoxine (SDX), sulfamethoxazole (SMZ), pyrimethamine (PYR) and trimethoprim (TMP), using a 48 h microtest, with RPMI-1640 low in PABA and folic acid. The IC50 for F 32 was: PYR 6.1 X 10(-9) M (mol/litre), TMP 1.3 X 10(-7) M, Fansidar (SDX/PYR 80:1) less than 10(-8) to 1.3 X 10(-10) M and cotrimoxazole (SMZ/TMP 20:1) 2.6 X 10(-7) to 1.3 X 10(-8) M. The IC50 for K 1 was: PYR greater than 10(-6) M, TMP 8.2 X 10(-7) M, Fansidar 4.1 X 10(-7) to 1.1 X 10(-9) M and cotrimoxazole 1.8 X 10(-6) to 9.0 X 10(-8) M. The difference in IC50 between F 32 and K 1 against TMP and cotrimoxazole is much less than the difference between the IC50 values against PYR and Fansidar, indicating that cross-resistance between PYR and TMP exists, but is not complete. A method for calculating the IC50 by linear regression analysis is described.
journal_name
Trans R Soc Trop Med Hygauthors
Petersen Edoi
10.1016/0035-9203(87)90226-4subject
Has Abstractpub_date
1987-01-01 00:00:00pages
238-41issue
2eissn
0035-9203issn
1878-3503journal_volume
81pub_type
杂志文章abstract::In 2005-2006, a large outbreak of Chikungunya (CHIK) fever occurred on the western Indian Ocean Islands. In Mayotte, concurrent with an enhanced passive case notification system, we carried out two surveys. A seroprevalence survey designed to document recent CHIK infection was conducted on serum samples collected from...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/j.trstmh.2008.02.018
更新日期:2008-08-01 00:00:00
abstract::Using the IgG fraction of a monospecific sheep antiserum against the circulating anodic antigen (CAA) of Schistosoma mansoni, an indirect haemagglutination reaction for the determination of this antigen was developed. This is the first time that an IHA has been applied to the detection of circulating antigens in paras...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/0035-9203(78)90055-x
更新日期:1978-01-01 00:00:00
abstract::A dynamic model of the transmission of hepatitis B virus (HBV) was used to investigate some of the possible implications of the loss of vaccine-induced immunity on the effectiveness of mass HBV vaccination in high endemicity countries. The model, which describes the processes of horizontal and vertical transmission of...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/s0035-9203(96)90539-8
更新日期:1996-07-01 00:00:00
abstract::The sensitivity specificity of an enzyme-linked immunosorbent assay (ELISA) for the serodiagnosis of strongyloidiasis has been investigated. 45 men with long-standing strongyloidiasis were compared with the same number of age- and sex-matched control subjects. The ELISA detected antibody in 84% of patients with parasi...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/0035-9203(81)90156-5
更新日期:1981-01-01 00:00:00
abstract::A seroepidemiological survey of bancroftian filariasis was carried out in 2 townships in Sri Lanka with the objectives of determining the microfilaraemia rates, dependence on age and sex, susceptibility to re-infection, effect of diethylcarbamazine therapy on serum antibodies to microfilarial surface antigens, and the...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/0035-9203(89)90511-7
更新日期:1989-05-01 00:00:00
abstract::The effects of levamisole, isoprinosine and Corynebacterium parvum on Trypanosoma cruzi (Y strain) experimental infection of mice were studied. In prophylactic treatment these drugs reduced the peak of parasitaemia, and had no apparent effect on mortality rate or on histopathological and electrocardiographic findings....
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/0035-9203(88)90268-4
更新日期:1988-01-01 00:00:00
abstract::To characterize red cell susceptibility to invasion in malaria, a selectivity index (SI) was calculated as the ratio of observed number of multiple-infected red cells to that expected from a random process (Poisson distribution). In patients with falciparum malaria (n = 100) SI decreased with increasing parasitaemia (...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/s0035-9203(99)90295-x
更新日期:1999-03-01 00:00:00
abstract::1,003 patients with meningococcal disease admitted to a single hospital during the course of a three-month epidemic were studied. A progressive decline in mortality, especially among patients with acute meningococcaemia, and a falling incidence of systemic and severe neurological complications among patients with meni...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/0035-9203(79)90053-1
更新日期:1979-01-01 00:00:00
abstract::We report the successful treatment of envenoming by the Gaboon viper (Bitis gabonica) and include results of in vitro investigations of the haemostatic properties of the whole venom. The patient was admitted to casualty soon after the bite with chest tightness, dizziness, nausea and swelling at the site of the bite an...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/0035-9203(93)90427-r
更新日期:1993-01-01 00:00:00
abstract::A community-based intervention trial was carried out to evaluate the effectiveness of alphamethrin-impregnated bed nets for control of Plasmodium vivax malaria and its vector in an area of moderate endemicity in southern Henan province, central China in 1990. Malaria incidence was significantly lower in the interventi...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/0035-9203(94)90199-6
更新日期:1994-11-01 00:00:00
abstract::Serum and urinary RNase activity was determined in 15 normal children and in 52 children in various clinical stages of schistosomal hepatic fibrosis. The activity of serum RNase was compared with that of serum GOT, GPT and AP. The activity of serum and urinary RNase in the different schistosomal groups was significant...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/0035-9203(78)90018-4
更新日期:1978-01-01 00:00:00
abstract::The strain diversity of 100 Mycobacterium tuberculosis isolates collected over a period of 18 months from tuberculosis (TB) cases in Sri Lanka was studied by spoligotyping. When compared to the international spoligotyping database, 43 spoligotype patterns were identified, of which 20 were previously described. The maj...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/j.trstmh.2008.04.025
更新日期:2008-10-01 00:00:00
abstract::The clinical occurrence of Pneumocystis carinii and Mycobacterium tuberculosis was investigated in patients infected with human immunodeficiency virus (HIV) who had clinical pneumonia of unknown aetiology in Lusaka, Zambia. The results were compared with a similar group of patients in Stockholm, Sweden. Induced sputum...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/0035-9203(89)90290-3
更新日期:1989-07-01 00:00:00
abstract::931 serum samples collected at random from healthy subjects in the four health zones of Imo State were analysed for the presence of rubella haemagglutination inhibition antibodies. Rubella antibodies were present in 625 of the samples giving a prevalence of 66.6%. There was a gradual increase in the prevalence of thes...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/0035-9203(85)90114-2
更新日期:1985-01-01 00:00:00
abstract::Blood pressure, heart rate and electrocardiographic responses to exercise were compared in a group of 125 subjects with antibodies to Trypanosoma cruzi and in 153 seronegative subjects, randomly selected from persons with no evidence of heart disease in a resting electrocardiogram during a cross-sectional survey among...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/0035-9203(90)90081-o
更新日期:1990-11-01 00:00:00
abstract::Man-biting collections were made for 7 consecutive nights per month for 24 months at 2 sites in a Thai village regularly treated with DDT and fenitrothion yet hyperendemic for Plasmodium falciparum and P. vivax. Only Anopheles dirus was incriminated as a vector: 1.6% were infective and 2.4% were infected (median numbe...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/0035-9203(90)90367-n
更新日期:1990-01-01 00:00:00
abstract::The red fox is considered to be the main reservoir of the present European rabies epizootic which began in Poland in 1939-40. Its usual rate of spread is 20 to 60 km a year. Mortality among rabies-infected fox populations is estimated variously to be 20 to 60%. The infection spreads more rapidly among foxes in the aut...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章,评审
doi:10.1016/0035-9203(76)90036-5
更新日期:1976-01-01 00:00:00
abstract::A cross-sectional study of 729 children and adults in western Kenya investigated the impact of infection with hookworm, Ascaris lumbricoides, Trichuris trichiura, Schistosoma mansoni and malaria on iron status. In bivariate analyses, hookworm intensities as low as 300 eggs/g of faeces were negatively related to levels...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/s0035-9203(98)90795-7
更新日期:1998-11-01 00:00:00
abstract::The in vitro effect of pyrimethamine (PYR) on human blood mononuclear cells stimulated with phytohaemagglutinin (PHA), pokeweed mitogen (PWM) and purified protein derivative of tuberculin (PPD) was studied by 14C-thymidine incorporation, by cell counting and by total DNA estimation. PYR in concentrations 10 times high...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/0035-9203(86)90040-4
更新日期:1986-01-01 00:00:00
abstract::A large epidemic of urban yellow fever occurred in April and May 1987 in Oyo State, western Nigeria. The principal vector was Aedes aegypti, breeding in domestic water containers. The 1987 outbreak followed an epidemic of sylvatic yellow fever in eastern Nigeria the previous year, and probably resulted from introducti...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/0035-9203(89)90518-x
更新日期:1989-05-01 00:00:00
abstract::The frequency, intensity and clinical features of onchocerciasis in the two ethnic groups (Blacks and Chachilla--an indigenous tribe) in the endemic foci of the disease in Esmeraldas province (Ecuador) were evaluated. The incidence of infection and intensity of the disease seen in both groups were directly related to ...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/0035-9203(84)90183-4
更新日期:1984-01-01 00:00:00
abstract::Guinea-pigs were inoculated with Entamoeba histolytica strains isolated from cases of amoebic liver abscess, amoebic dysentery and asymptomatic cyst passers and the strains were classified in zymodemes by isoenzyme electrophoresis. It was observed that certain non-pathogenic zymodemes were potentially pathogenic for t...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/0035-9203(89)90385-4
更新日期:1989-09-01 00:00:00
abstract:BACKGROUND:This study intended to implement a novel intervention strategy, in Brazil, using an ecohealth approach and analyse its effectiveness and costs in reducing Aedes aegypti vector density as well as its acceptance, feasibility and sustainability. The intervention was conducted from 2012 to 2013 in the municipali...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章,随机对照试验
doi:10.1093/trstmh/tru187
更新日期:2015-02-01 00:00:00
abstract:BACKGROUND:Cryptosporidium spp. are enteric parasites that infect humans and animals. In immunocompromised patients infection can be fatal. This study was conducted to identify sub-populations of Cryptosporidium hominis and C. parvum isolates from HIV-seropositive patients in Equatorial Guinea. METHODS:In a previous s...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章,多中心研究
doi:10.1093/trstmh/tru108
更新日期:2014-09-01 00:00:00
abstract::Sixty-seven children with heavy Trichuris trichiura infection (Group A) were compared to 73 control children of similar socio-economic status but with light or no T. trichiura (Group B), for nutritional status, rates of concomitant bacterial and protozoal, and symptoms and clinical signs associated with heavy T. trich...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/0035-9203(83)90103-7
更新日期:1983-01-01 00:00:00
abstract::Surveys of the health of schoolchildren in Tanga Region, Tanzania and Volta Region, Ghana are reported. Two age groups of both sexes were studied: 8-9 and 12-13 years old. Children themselves tend to have a poor perception of their health status. This is confirmed by biomedical surveys. Evidence was common of chronic ...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/s0035-9203(98)90999-3
更新日期:1998-05-01 00:00:00
abstract::The seroprevalence of toxocariasis was investigated in 1997/98 in 1009 schoolchildren (aged 5-12 years) throughout Trinidad. Infection, as measured by titre, was found to be high compared to values obtained from children in other countries. Using an excretory-secretory antigen and performing an ELISA test, it was foun...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/s0035-9203(02)90281-6
更新日期:2002-03-01 00:00:00
abstract::A survey of enteric pathogens in 143 children with diarrhoea, 116 age-matched controls and 524 asymptomatic people of all ages in a commercial farming area was carried out over a period of one year. Giardia lamblia was detected in 34% of the cases, 29% of the controls and 23% of asymptomatic people of all ages. Variou...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/0035-9203(87)90403-2
更新日期:1987-01-01 00:00:00
abstract::Clinical characteristics of patients with falciparum malaria, as well as sensitivity of Plasmodium falciparum to chloroquine and mefloquine, were investigated in 2 distinct strata within the same geographical area of the Amazon Basin. One stratum was the population living along the road, the other that living along th...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章
doi:10.1016/0035-9203(89)90625-1
更新日期:1989-03-01 00:00:00
abstract::Epilepsy is a major health problem worldwide, and neurocysticercosis (NCC) is one of the important causes of epilepsy in the tropics. The present study was carried out in a rural pig farming community of north India to estimate the prevalence of NCC in patients with active epilepsy (AE) and to determine the associated...
journal_title:Transactions of the Royal Society of Tropical Medicine and Hygiene
pub_type: 杂志文章,多中心研究
doi:10.1016/j.trstmh.2008.07.015
更新日期:2009-02-01 00:00:00