Abstract:
:In the present study, some morphological structures of antennae, maxillary palps and caudal setae of fourth instar larvae of laboratory-reared phlebotomine sand flies (Lutzomyia longipalpis, L. migonei, L. evandroi, L. lenti, L. sericea, L. whitmani and L. intermedia) of the State of Ceará, Brazil, were examined under scanning electron microscopy. The antennal structures exhibited considerable variation in the morphology and position. A prominent digitiform distal segment has been observed only on the antenna of species of the subgenus Nyssomyia. The taxonomic relevance of this and other antennal structure is discussed. The papiliform structures found in the maxillae and the porous structures of the caudal setae of all species examined may have chemosensory function. Further studies with transmission electron microscopy are needed to better understand the physiological function of these external structures.
journal_name
Mem Inst Oswaldo Cruzjournal_title
Memorias do Instituto Oswaldo Cruzauthors
Pessoa FA,Guerra de Queiroz R,Ward RDdoi
10.1590/s0074-02762001000800013subject
Has Abstractpub_date
2001-11-01 00:00:00pages
1103-8issue
8eissn
0074-0276issn
1678-8060pii
S0074-02762001000800013journal_volume
96pub_type
杂志文章abstract::The aim of this study was to test if serological distinction between patients with active and inactive neurocysticercosis (NCC), could be accomplished by the recognition of immunodominant peptides in total saline antigenic extract of Taenia solium metacestodes by IgG antibody in cerebrospinal fluid (CSF) and serum pai...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/s0074-02762007005000084
更新日期:2007-09-01 00:00:00
abstract::The lack of an experimental animal model for the study of dengue pathogenesis is a limiting factor for the development of vaccines and drugs. In previous studies, our group demonstrated the susceptibility of BALB/c mice to infection by dengue virus (DENV) 1 and 2, and the virus was successfully isolated in several org...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/0074-02760170208
更新日期:2018-02-05 00:00:00
abstract::This article reviews current concepts of the biology of Endotrypanum spp. Data summarized here on parasite classification and taxonomic divergence found among these haemoflagellates come from our studies of molecular characterization of Endotrypanum stocks (representing an heterogenous population of reference strains ...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章,评审
doi:10.1590/s0074-02761999000200026
更新日期:1999-03-01 00:00:00
abstract::A virus antigenic characterization methodology using an indirect method of antibody detection ELISA with virus-infected cultured cells as antigen and a micro virus neutralisation test using EIA (NT-EIA) as an aid to reading were used for antigenic characterization of Jatobal (BeAn 423380). Jatobal virus was characteri...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/s0074-02761988000200003
更新日期:1988-04-01 00:00:00
abstract::Mutations in the katG gene have been identified and correlated with isoniazid (INH) resistance in Mycobacterium tuberculosis isolates. The mutation AGC-->ACC (Ser-->Thr) at katG315 has been reported to be the most frequent and is associated with transmission and multidrug resistance. Rapid detection of this mutation c...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/s0074-02762009000500008
更新日期:2009-08-01 00:00:00
abstract::Schistosoma mansoni infections are associated with a strong Th2 cytokine response. Treatment of mice with IL-12 or anti-IL-2 or anti-IL-4 before i.v. injection of eggs increased IFN-gamma production and downregulated Th2 responses and pulmonary granuloma size. Conversely, anti-IFN-gamma antibody treatment increased Th...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/s0074-02761998000700004
更新日期:1998-01-01 00:00:00
abstract::The sample consists of 226 skulls from the Atacameño cemetery of Coyo Oriente (639-910 AD), associated with the Tiwanaku period. The authors analyzed signs of acute trauma typically associated with violence, and the results were 12% of men and 9.9% of women displaying any type of lesion related to violence. In males, ...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 历史文章,杂志文章
doi:10.1590/s0074-02762006001000020
更新日期:2006-12-05 00:00:00
abstract::Trypanosomes are parasitic protozoa in which gene expression is primarily controlled through the regulation of mRNA stability and translation. This post-transcriptional control is mediated by various families of RNA-binding proteins, including those with zinc finger CCCH motifs. CCCH zinc finger proteins have been sho...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/s0074-02762012000600014
更新日期:2012-09-01 00:00:00
abstract::This study was undertaken to investigate the prevalence of Mansonella ozzardi infection and to estimate the parasitic infection rate (PIR) in simuliid black flies in the municipality of Pauini, Amazonas, Brazil. We used thick blood films to examine 921 individuals in 35 riverine communities along the Pauini and Purus ...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/s0074-02762009000100012
更新日期:2009-02-01 00:00:00
abstract::Rats and mice are among the most susceptible hosts for the helminth Capillaria hepatica. More information on the similarities and differences between the hepatic pathology presented by these two parasite hosts are needed, since they may represent good models for the study of hepatic fibrosis. Early changes are similar...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/s0074-02762004000400010
更新日期:2004-06-01 00:00:00
abstract::In order to determine the best type of rabies vaccine to use as a booster, 78 serological samples from singly vaccinated cattle were analyzed by counterimmunoelectrophoresis technique. The animals were divided into several groups, received the first vaccine dose with modified live virus vaccine (ERA strain) and were r...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/s0074-02762000000100013
更新日期:2000-01-01 00:00:00
abstract::The high level of protection elicited in rodents and primates by the radiation-attenuated schistosome vaccine gives hope that a human vaccine relying on equivalent mechanisms is feasible. In humans, a vaccine would be undoubtedly administered to previously or currently infected individuals. We have therefore used the ...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/s0074-02762006000900061
更新日期:2006-09-01 00:00:00
abstract::Triatoma jatai sp. nov. is the first new species of triatomine to be described in the state of Tocantins, in the northern region of Brazil. It was caught on rock outcrops in the wild environment and, more recently, invading homes. While T. jatai sp. nov. is morphologically similar to Triatoma costalimai, it is disting...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/S0074-0276108042013006
更新日期:2013-06-01 00:00:00
abstract::The direct agglutination test (DAT) based on a freeze-dried antigen and the rK39 dipstick test were evaluated for the sero-diagnosis of visceral leishmaniasis (VL). The sensitivity and specificity of both tests were determined using sera from confirmed VL patients (n = 21), healthy controls (n = 19) and from patients ...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/s0074-02762002000700015
更新日期:2002-10-01 00:00:00
abstract::Molecular evidence showed 46.2% of Trypanosoma cruzi infection in Mepraia spinolai insects from North-Central Chile, which is significantly higher than previous reports of up to 26% by microscopic observation. Our results show similar infection levels among nymphal stages, ranging from 38.3 to 54.1%, indicating that y...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/s0074-02762005000300003
更新日期:2005-05-01 00:00:00
abstract::Toxocara cati is a common feline parasite transmitted by the ingestion of embryonated eggs, by the transmammary route or by predation of paratenic hosts harbouring third-stage larvae in their bodies. In the present study, the larval distribution of T. cati in tissues and organs of Rattus norvegicus experimentally infe...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/s0074-02762009000600020
更新日期:2009-09-01 00:00:00
abstract::The merozoite surface protein-1 (MSP-1) locus of Plasmodium falciparum codes for a major asexual blood-stage antigen currently proposed as a major malaria vaccine candidate. The protein, however, shows extensive polymorphism, which may compromise its use in sub-unit vaccines. Here we compare the patterns of allelic di...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/s0074-02761998000500013
更新日期:1998-09-01 00:00:00
abstract::Since the emergence of West Nile virus (WNV) in North America in 1999, there have been several reports of WNV activity in Central and South American countries. To detect WNV in Brazil, we performed a serological survey of horses from different regions of Brazil using recombinant peptides from domain III of WNV. Positi...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/S0074-02762013005000001
更新日期:2013-11-01 00:00:00
abstract::Acute Chagas disease (ACD) has a distinct epidemiological profile in the Amazon Region, with cases and outbreaks of Trypanosoma cruzi infection being possibly related to the ingestion of contaminated food. Data on ACD in the state of Pará retrieved from 2000 to 2016 from the Brazilian Notifiable Diseases Information S...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/0074-02760170298
更新日期:2018-01-01 00:00:00
abstract::Two sibling species of Biomphalaria, B. tenagophila and B. occidentalis were identified using isozyme patterns obtained by horizontal gel electrophoresis. Six diagnostic enzymatic loci were identified in digestive gland homogenates. The results enable us to distinguish the species, calculate the Nei's coefficient of g...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/s0074-02761995000300010
更新日期:1995-05-01 00:00:00
abstract::In the Americas, hantaviruses cause severe cardiopulmonary syndrome (HCPS) with a high fatality rate. Hantavirus infection is commonly diagnosed using serologic techniques and reverse transcription-polymerase chain reaction. This paper presents a novel plaque reduction neutralisation test (PRNT) for detecting antibodi...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/0074-02760150102
更新日期:2015-08-01 00:00:00
abstract::In C57Bl/6 strain mice vaccinated with radiation-attenuated cercariae of Schistosoma mansoni immune elimination of challenge parasites occurs in the lungs. Leucocytes were recovered from the lungs of such mice by bronchoalveolar lavage and cultured in vitro with larval antigen; the profile of cytokines released was th...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章,评审
doi:10.1590/s0074-02761992000800015
更新日期:1992-01-01 00:00:00
abstract::Distinct Toxoplasma gondii antigens were entrapped within liposomes and evaluated for their ability to protect Balb/c mice against congenital transmission: soluble tachyzoite antigen (L/STAg), soluble tissue cyst antigen (L/SCAg), soluble tachyzoite plus tissue cyst (L/STCAg) or purified 32kDa antigen of tachyzoite (L...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/s0074-02762001000100011
更新日期:2001-01-01 00:00:00
abstract::India was affected by a major outbreak of chikungunya fever caused by Chikungunya virus (CHIKV) during 2006-2007. Kerala was the worst affected state during 2007 with a contribution of 55.8% suspected cases in the country. However, except for clinically reported case records, no systematic information is available on ...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/s0074-02762011000800003
更新日期:2011-12-01 00:00:00
abstract::The diagnosis of meningitic angiostrongyliasis (MA) is based on clinical criteria. A lumbar puncture is used as a diagnostic tool, but it is an invasive procedure. The blood eosinophil levels are also assessed and used in the diagnosis of this disease. We enrolled 47 patients with serologically proven MA and 131 contr...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/s0074-02762010000700020
更新日期:2010-11-01 00:00:00
abstract::The role of intracellular free polyamine (putrescine and spermidine) pools in multiple resistance to aminoglycoside antibiotics was investigated among in vitro selected kanamycin-resistant Escherichia coli J53 mutants expressing diminished oligopeptide-binding protein (OppA) levels and/or defective ornithine decarboxy...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/s0074-02762005000700020
更新日期:2005-11-01 00:00:00
abstract::In a recent article in the Reader's Opinion, advantages and disadvantages of the certification processes of interrupted Chagas disease transmission (American trypanosomiasis) by native vector were discussed. Such concept, accepted by those authors for the case of endemic situations with introduced vectors, has been bu...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 评论,杂志文章
doi:10.1590/0074-0276140338
更新日期:2014-02-01 00:00:00
abstract:BACKGROUND:The detection of live Mycobacterium leprae in soil and animals other than humans suggests that the environment plays a role in the transmission of leprosy. OBJECTIVE:The objective of this study was to investigate the presence of viable M. leprae in natural water sources used by the local population in five ...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/0074-02760170117
更新日期:2017-12-01 00:00:00
abstract::Acoustic signalling has been extensively studied in insect species, which has led to a better understanding of sexual communication, sexual selection and modes of speciation. The significance of acoustic signals for a blood-sucking insect was first reported in the XIX century by Christopher Johnston, studying the hear...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章,评审
doi:10.1590/0074-0276130390
更新日期:2013-01-01 00:00:00
abstract::Nitroarylidenemalononitriles and their cyanoacetamide derivatives with remarkable anti-epimastigote properties, were synthesized attempting to obtain new 3,5-diamino-4-(5'-nitroarylidene)-4H-thiadiazine 1,1-dioxide derivatives, which in previous reports had shown anti-Trypanosoma cruzi activity. Tests to evaluate the ...
journal_title:Memorias do Instituto Oswaldo Cruz
pub_type: 杂志文章
doi:10.1590/s0074-02762002000400019
更新日期:2002-06-01 00:00:00