Abstract:
:The analysis of three recombinant clones containing the histone H2A locus isolated from a genomic library of Trypanosoma cruzi DNA shows that the H2A gene loci are formed by 1.2 and 0.76 kb long intercalated units organized in a head-to-tail tandem array. The difference in length between the two gene units is due to the presence of a short interspersed nucleotide element (SINE)-like DNA sequence inserted at the 3' end of some of these units. Southern, northern and chromosomal blot analysis of a Brazilian Y strain and six Colombian strains demonstrated the existence of polymorphisms regarding the relative copy number of the H2A gene units, the relative abundance of the H2A transcripts and their chromosomal location. These results show the existence of a dynamic organization in the H2A loci among T. cruzi strains in which a SINE-like sequence may be involved and support the fact that T. cruzi has a high degree of plasticity in its genome.
journal_name
Acta Tropjournal_title
Acta tropicaauthors
Thomas MC,Olivares M,Escalante M,Marañón C,Montilla M,Nicholls S,López MC,Puerta Cdoi
10.1016/s0001-706x(00)00061-9subject
Has Abstractpub_date
2000-03-25 00:00:00pages
203-10issue
2eissn
0001-706Xissn
1873-6254pii
S0001-706X(00)00061-9journal_volume
75pub_type
杂志文章相关文献
ACTA TROPICA文献大全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
pub_type: 杂志文章
doi:
更新日期:1987-06-01 00:00:00
abstract::Triatoma infestans is a mandatory haematophagous vector of Chagas disease in Brazil. Despite a large number of studies on the anti-haemostatic molecules present in its saliva, the role of its salivary components on parasite transmission is poorly understood. Here, we show that the bioactive lipid molecule, lysophospha...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2017.10.022
更新日期:2018-02-01 00:00:00
abstract::A surveillance system has been put in place in the Zhejiang province since achieving there the criteria for transmission interruption of schistosomiasis japonica. Suspected patients and special high-risk groups (e.g. the so called 'floating population' and children under 14 years of age) are screened for Schistosoma j...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2005.07.022
更新日期:2005-11-01 00:00:00
abstract::Cutaneous leishmaniasis (CL) is an important public health problem with around 2.000 autochthonous reported cases each year in Turkey. Due to the civil war in Syria, Turkey received around three million refugees and they are mainly located at either camps or homes in south/southeastern part of Turkey. In the present s...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2016.10.019
更新日期:2017-02-01 00:00:00
abstract::The rapid, accurate diagnosis of Plasmodium spp. is essential for the effective control of malaria, especially in asymptomatic infections. In this study, we developed a sensitive, genus-specific, real-time quantitative PCR assay. It was compared with the microscopic examination of Giemsa-stained blood smears and two d...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2011.05.006
更新日期:2011-10-01 00:00:00
abstract::Leishmania infantum is a protozoan that causes visceral leishmaniasis, a potentially deadly neglected tropical disease. The gold standard for diagnosis has traditionally been detection of amastigotes in bone marrow or spleen aspirates, but this is an invasive procedure that carries the risk of serious complications. N...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2017.12.011
更新日期:2018-02-01 00:00:00
abstract::The information in this protocol covers from the basic steps and material necessary to start a sand fly colony up to the specific details which are important to the success of a Nyssomyia neivai colony. The greatest problems in our colony of Ny. neivai were solved with specific care, for instance, using vermiculite an...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2017.07.010
更新日期:2017-10-01 00:00:00
abstract::A field trial was conducted on the efficacy of Interceptor nets-a long-lasting insecticidal net (LLN) factory treated with alphacypermethrin 0.667% (w/w) corresponding to 200mg/m(2), against malaria vectors Anopheles culicifacies and Anopheles fluviatilis in one of the highly endemic areas of Orissa. The study area co...
journal_title:Acta tropica
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.actatropica.2010.05.002
更新日期:2010-10-01 00:00:00
abstract::Transfusion transmitted Chagas disease was recognized as a medical problem more than 50 years ago. However, little attention was paid to it by Transfusion Medicine, medical authorities or regulatory agencies as a major problem and threat (especially after the advent of HIV/AIDS); perhaps because it was mainly restrict...
journal_title:Acta tropica
pub_type: 杂志文章,评审
doi:10.1016/j.actatropica.2009.12.006
更新日期:2010-07-01 00:00:00
abstract::Anopheles balabacensis balabacensis and Anopheles minimus are the main malaria vectors in Thailand. In a cleared forested foothill area in the central part of the country A. minimus was the most prevalent anopheline species found, only 6 specimens of A. b. balabacensis being collected over a 3-year period. Cattle were...
journal_title:Acta tropica
pub_type: 杂志文章
doi:
更新日期:1978-03-01 00:00:00
abstract::The incidence of Echis carinatus (saw-scaled or carpet viper) bite and its mortality have been investigated in the Nigerian savanna region. A geographical area was defined in which the snake was particularly abundant and bites were frequent. Perennial and seasonal fluctuations in incidence and mortality, the circumsta...
journal_title:Acta tropica
pub_type: 杂志文章
doi:
更新日期:1976-01-01 00:00:00
abstract::The anthelmintic activity of 11 benzimidazole derivatives (A1-A11) and 2 thioureides N,N'-disubstituted (B1-B2) was determined. Each compound and albendazole was tested in vitro against Toxocara canis larvae and in vivo against Hymenolepis nana adult. Compounds A1-A6 and B1-B2 were designed as albendazole prodrugs. Co...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2008.11.014
更新日期:2009-03-01 00:00:00
abstract::We have sequenced single kinetoplast DNA minicircles from three species and part of a minicircle from the fourth major species within the Leishmania braziliensis complex. Alignment of these sequences with each other and with those of other kinetoplastids allowed the selection of a pair of oligonucleotides suitable as ...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/0001-706x(92)90006-j
更新日期:1992-09-01 00:00:00
abstract::In this study, 27 CDC traps were modified with various attractive features and compared with a CDC trap with no light source or baits to evaluate the effects on attraction to Phlebotomus papatasi (Scopoli) north of the Dead Sea near Jericho. Attractive features included CO2, lights, colored trap bodies, heat, moisture...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2014.06.007
更新日期:2015-01-01 00:00:00
abstract::The rat lungworm Angiostrongylus cantonensis causes human eosinophilic meningitis and it is endemic in Southeast Asia, but little is known about its distribution in Laos, Cambodia and Vietnam. We conducted a multi-country survey for A. cantonensis in these countries to estimate its prevalence in snails along the Mekon...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2018.03.021
更新日期:2018-07-01 00:00:00
abstract::Indirect fluorescent antibody (IFA) tests and enzyme-linked immunosorbent assays (ELISA) were used to measure antibodies to Plasmodium falciparum in an indigenous population in an area of Malaysia with high malaria prevalence. The results of three surveys were analyzed to examine the relation of these serologic measur...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/0001-706x(90)90054-4
更新日期:1990-12-01 00:00:00
abstract::Currently, benzimidazoles are used as chemotherapeutic agents and as a complement to surgery and PAIR in the treatment of cystic echinococcosis (CE). They are generally applied at high doses causing side effects and, 50% of cases do not respond favorably to such chemotherapy. The use of essential oils obtained by dist...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2016.09.001
更新日期:2016-12-01 00:00:00
abstract:BACKGROUND:Black fly and sandfly bites are related to the endemicity of pemphigus foliaceus (PF); however, an immune reaction against the salivary proteins from these flies still requires confirmation in the case of PF patients living in southeastern Brazil. PURPOSE:To georeference the distribution of Simuliidae (Dipt...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2017.09.015
更新日期:2017-12-01 00:00:00
abstract::Schistosomiasis is one of the most common parasitic diseases in tropical and subtropical areas, including Brazil. A national control programme was initiated in Brazil in the mid-1970s and proved successful in terms of morbidity control, as the number of cases with hepato-splenic involvement was reduced significantly. ...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2013.12.007
更新日期:2014-04-01 00:00:00
abstract::Leishmaniasis is a major vector-borne disease and health problem in Iran. Studies on sand flies, as the vectors of the disease, began in the Northern and Western parts of the country in 1930 and have been continued up to now. Concerning many published information in the field of sand flies, providing a digital databas...
journal_title:Acta tropica
pub_type: 杂志文章,meta分析
doi:10.1016/j.actatropica.2014.01.004
更新日期:2014-04-01 00:00:00
abstract::We aimed to systematically review evidence pertaining to the safety and efficacy of nitazoxanide in treating infectious diarrhea. On September 21, 2017, we identified relevant studies using 12 databases. The estimates of the included studies were pooled as a risk ratio (RR). We conducted a network and pairwise random-...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2020.105603
更新日期:2020-10-01 00:00:00
abstract::Disease control programmes are an intrinsic part of health systems. Neglected tropical disease (NTD) control is a clear case in point. While there is a growing consensus that NTD control and health services are linked, with important mutual impacts, little is known of what actually happens at the interface between the...
journal_title:Acta tropica
pub_type: 杂志文章,评审
doi:10.1016/j.actatropica.2011.02.017
更新日期:2011-09-01 00:00:00
abstract::Blastospores or conidia (formulated or not) of entomopathogenic fungi were assessed against Aedes aegypti larvae. Larvae (L2) were exposed to 105, 106, 107, and 108 propagules mL-1 water suspension. Mineral oil at 0.1%, 0.5%, or 1.0% (v/v) was employed to observe the effect on larval survival. The 0.1% mineral oil did...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2020.105732
更新日期:2021-01-01 00:00:00
abstract::Glutathione transferases (GSTs) perform several catalytic and non-catalytic roles in the defense against toxicities of electrophile compounds and oxidative stress, and therefore are involved in stress-response and cell detoxification. Previously, we have provided evidence indicating that EgGST2 and EgGST3, two phyloge...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2018.01.007
更新日期:2018-04-01 00:00:00
abstract::Toxoplasmosis is a common and serious parasitic disease with high prevalence and global distribution in human and other warm-blooded vertebrates. Though the infection of Toxoplasma gondii is usually asymptomatic in healthy people, it can lead to severe pathological effects to the fetus of infected women and immunocomp...
journal_title:Acta tropica
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.actatropica.2016.03.003
更新日期:2016-06-01 00:00:00
abstract::The ability of Phlebotomus langeroni to successfully acquire and transmit Leishmania infantum MON-98 to hamsters was demonstrated. Sand flies and Leishmania both originated from an infantile visceral leishmaniasis focus in El Agamy Egypt. P. langeroni females were infected by feeding on lesions of needle-inoculated ha...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2011.08.008
更新日期:2012-01-01 00:00:00
abstract::Historically, the whole of Burkina Faso was considered to be endemic for onchocerciasis (except a small area in the far north of the country) with prevalence rates 60-80%, but all endemic areas were included in the World Health Organisation Onchocerciasis Control Programme, which operated a system of vector control by...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2018.05.013
更新日期:2018-09-01 00:00:00
abstract::The risk of infection (RI) with Wuchereria bancrofti by vector mosquitoes has been conventionally estimated from the biting population of all age classes. This estimate of RI had no correlation with microfilaria (mf) prevalence and intensity of infection in humans. A new method for estimating RI from a resting populat...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/0001-706x(93)90081-l
更新日期:1993-12-01 00:00:00
abstract::The murine monoclonal anti-idiotypic antibody NP30 is a promising therapeutic antibody against Schistosoma japonicum. However, the immunogenicity of murine NP30 limits its further study and application in humans. Here the chimeric Fab of NP30 (chFab-NP30) comprising the variable regions of murine NP30 and constant reg...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2011.01.006
更新日期:2011-05-01 00:00:00
abstract::Leishmaniasis, a zoonotic disease caused by parasites of the genus Leishmania, has expanded beyond its natural range and is becoming increasingly urban. Using PCR and PCR-RFLP, we detected Leishmania (Viannia) braziliensis in two bats (Chiroptera) in Mato Grosso do Sul, Brazil, an endemic area. This is the first recor...
journal_title:Acta tropica
pub_type: 杂志文章
doi:10.1016/j.actatropica.2013.07.004
更新日期:2013-10-01 00:00:00