Consulta: creatorFacets:"Alves,Leucio Câmara"
Registros recuperados: 9
Data/hora: 01/06/2024 03:38:02

Vector competence of Culex quinquefasciatus Say, 1823 exposed to different densities of microfilariae of Dirofilaria immitis (Leidy, 1856)
Provedor de dados: 92
Autores: Carvalho,Gílcia Aparecida de; Alves,Leucio Câmara; Maia,Rafael Trindade; Andrade,Carlos Fernando Salgueirosa de; Ramos,Rafael Antonio do Nascimento; Faustino,Maria Aparecida da Glória.
The metropolitan region of Recife, Brazil is endemic for Dirofilaria immitis and has an environment favorable to the development of Culex quinquefasciatus. The goal of this study was to evaluate the vector competence of the Cx. quinquefasciatus RECIFE population for D. immitis transmission. A total of 2,104 females of Cx. quinquefasciatus RECIFE population were exposed to different densities of D. immitis microfilariae blood meals, ranging from 1,820 to 2,900 mf/ml of blood, in a natural membrane apparatus. The results showed a variation between 92.3% and 98.8% of females fed. The exposure of the Cx. quinquefasciatus RECIFE population to different densities of microfilariae did not influence the mortality of the mosquitoes. Infective larvae from D. immitis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biology; Experimental infections; Mosquitoes.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262008000400018

Criptosporidiose: uma revisão sobre a sua implicação na conservação dos mamíferos aquáticos
Provedor de dados: 49
Autores: Borges,João Carlos Gomes; Alves,Leucio Câmara; Faustino,Maria Aparecida da Gloria.
A criptosporidiose é uma doença parasitária emergente que vem sendo relatada em diversas espécies de mamíferos, incluindo os aquáticos. Esta revisão trata da epidemiologia da infecção por Cryptosporidium spp. em mamíferos aquáticos. A idade dos animais, dose infectante e o estado imunológico podem influenciar na apresentação clínica, e quando associados a outros patógenos pode levar o animal a óbito. A contaminação dos recursos hídricos constitui um dos principais meios de disseminação do parasito, que foi identificado por diferentes técnicas de análise. A adequação das estruturas de saneamento, utilização de métodos apropriados para a inativação dos oocistos e garantia das normas de higiene pessoal constituem algumas das maneiras recomendadas para...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animais aquáticos; Epidemiologia; Zoonose; Cryptosporidium.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032007000300010

Histopathological evaluation and parasite quantification (qPCR) in the male dog's genital system after natural infection with Leishmania infantum
Provedor de dados: 65
Autores: Oliveira,Vinícius Vasconcelos Gomes de; Macedo,Simone Regina Barros de; Araújo,Flábio Ribeiro de; Ramos,Carlos Alberto do Nascimento; Ramos,Rafael Antonio Nascimento; Maia,Frederico Celso Lyra; Alves,Leucio Câmara; Silva Junior,Valdemiro Amaro da.
ABSTRACT: Canine visceral leishmaniasisis an important disease caused by the protozoon Leishmania infantum which affects several organs and systems, including the genital tract. The L. infantum tropism to the male genital system and correlation among parasite load, immunohistochemistry detection and structural changes in these organs is controversy. Therefore, the aim of this study was to evaluate this correlation in the genital organs of the male dogs naturally infected with L. infantum. Samples from testicles, epididymis, prostate, glans penis, prepuce and scrotum were collected from 19 positive adult dogs. Structural changes were observed in the testicles (5.2%), epididymis (2.6%), prepuce (5.2%) and scrotum (5.2%) of the samples positive at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canine visceral leishmaniasis; Structural changes; Genital pathology; Immunohistochemistry.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000400641

Correlation between chronic inflammation, immunostaining and parasite load in the genital system of female dogs naturally infected with Leishmania infantum
Provedor de dados: 65
Autores: Oliveira,Vinícius Vasconcelos Gomes de; Macedo,Simone Regina Barros de; Araújo,Flábio Ribeiro de; Ramos,Carlos Alberto do Nascimento; Ramos,Rafael Antonio Nascimento; Maia,Frederico Celso Lyra; Alves,Leucio Câmara; Silva Junior,Valdemiro Amaro da.
ABSTRACT: The aim of the present study was to investigate the correlations among chronic inflammatory reaction, immunostaining and parasite load in the genital system of female dogs naturally infected with  Leishmania infantum . Animals (n = 10) used in this study were from the Department of Vector Control and Animal Surveillance of the municipality of Caruaru, state of Pernambuco, Brazil. Fragments of the vulva, vagina, cervix, uterine body, uterine horns and ovaries were submitted to histopathological analysis, immunohistochemistry (IHC) and DNA detection of amastigotes by qPCR. Correlations were found between the IHC findings and chronic inflammatory infiltrate related to L. Infantum only in the vulva and vagina; whereas, the same inflammatory reactions...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canine visceral leishmaniasis; Genital pathology; Immunohistochemistry; QPCR.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001102029

Patologias genitais associadas à leishmaniose visceral canina
Provedor de dados: 65
Autores: Oliveira,Vinícius Vasconcelos Gomes de; Alves,Leucio Câmara; SilvaJunior,Valdemiro Amaro da.
A leishmaniose visceral canina (LVC) é uma doença parasitária crônica causada por protozoários pertencentes ao gênero Leishmania. No Brasil, a transmissão se dá, principalmente, pela ação hematófaga de insetos vetores pertencentes à subfamília Phlebotominae, particularmente, a espécie Lutzomyia longipalpis. Todavia, a trasmissão vertical e venérea da LVC está presente. Os principais sinais clínicos observados nos animais acometidos pela LVC são linfoadenomegalia, dermatopatias, hepatoesplenomegalia, onicogrifose e oftalmopatias, contudo quadros atípicos podem ser observados, inclusive com o envolvimento do sistema genital. Dessa forma, o objetivo deste artigo é realizar revisão sobre as principais patologias genitais em cães machos e fêmeas com...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leishmania sp; Cães; Alterações etruturais; Sistema genital.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782012000900016

Molecular evidence of early vertical transmission of Leishmania ( Leishmania ) infantum in a dog
Provedor de dados: 65
Autores: Oliveira,Vinícius Vasconcelos Gomes de; Ramos,Rafael Antonio Nascimento; Ramos,Carlos Alberto do Nascimento; Guerra,Neurisvan Ramos; Maia,Frederico Celso Lyra; Alves,Leucio Câmara; Silva Junior,Valdemiro Amaro da.
ABSTRACT: Visceral leishmaniasis (VL) is caused by the protozoon  Leishmania infantum . Transmission of this parasite to hosts occurs mainly through the bite of infected sand flies. However, alternative infection routes have been hypothesized, especially in areas where the biological vector is absent. The exact time of infection and whether in utero transmission occurs have still not been fully elucidated. This report demonstrates molecular evidence of vertical transmission of L. infantum from a pregnant dog to the embryo. Samples (e.g. vulva, vagina, cervix, uterine body, uterine horn and ovaries) from a female naturally infected by L. infantum and from her embryo were molecularly analyzed by means of qPCR and cPCR followed by DNA sequencing. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leishmaniasis; Dog; Vertical infection; Embryo.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100553

Transmission routes of visceral leishmaniasis in mammals
Provedor de dados: 65
Autores: Oliveira,Vinícius Vasconcelos Gomes de; Alves,Leucio Câmara; Silva Junior,Valdemiro Amaro da.
Visceral leishmaniasis (VL) is a chronic disease caused by Leishmania infantum. The major sites of parasite localization in infected animals are the secondary lymphoid organs, bone marrow and cutaneous tissue. However, reports exist on the detection of the parasite in the organs of the male and female genital system. The main route of transmission is related to the hematophagous sandfly vectors of the genus Lutzomyia(New World) and Phlebotomus(Old World). However, other routes of transmission may be mentioned, such as sexual, vertical, hematogenic without vector and others involved in VL epidemiology. Thus, the current article reviews the main forms of transmission of visceral leishmaniasis in mammals
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leishmania sp; Dogs; Sexual transmission; Vertical transmission.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000901622

Uveitis associated to the infection by Leishmania chagasi in dog from the Olinda city, Pernambuco, Brazil
Provedor de dados: 65
Autores: Brito,Fábio Luiz da Cunha; Alves,Leucio Câmara; Duque Ortiz,Juan Pablo; Maia,Federico Celso Lyra; Silva Junior,Valdemiro Amaro da; Laus,Jose Luiz.
Among the parasitic diseases, Canine Visceral Leishmaniasis (CVL) is included in the systemic illnesses of chronic evolution that attack men and dogs, presenting varied clinical manifestations as cachexia, dermatologic lesions, peripheral lymphadenopathies, besides the ocular lesions. This work report the case of a dog clinically suspected of having CVL, presenting skin lesions, cachexia, gryphosis, and ocular signs of uveitis. The parasitological diagnosis was accomplished for Canine Leishmaniasis through the visualization of amastigote forms of Leishmania chagasi in smears of bone marrow fluid aspirate, of non-lesioned, and lesioned skin. Alterations in the ocular structures are characterized mainly by mononuclear-plasmocitic infiltrate.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Uveitis; Leishmania sp; Dog.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782004000300042

Histopathological findings and detection of parasites in the eyes of dogs infected naturally with Leishmania chagasi
Provedor de dados: 65
Autores: Brito,Fábio Luiz da Cunha; Laus,José Luiz; Tafuri,Wagner Luiz; Figueiredo,Maria Marta; Silva Júnior,Valdemiro Amaro; Maia,Frederico Celso Lyra; Alves,Leucio Câmara.
The objective of the present study was to investigate the histopathological alterations and detection of parasites that occur in the eyes of dogs naturally infected with Leishmania chagasi. The eyes of 25 dogs with a positive parasitological and serological exam for L. chagasi were submitted to routine ophthalmic examination. Fragments were obtained from the eyeball and were analyzed by immunohistochemistry and histopathology. Among the structures studied, the conjunctiva of the third eyelid was the tissue most frequently stained for L. chagasi. Histopathological analysis revealed a predominantly mononuclear inflammatory infiltrate whose intensity ranged from discrete to intense in the various ocular structures. Vascular congestion and perivasculitis were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canine; Leishmaniasis; Ocular abnormalities; Histopathology; Immunohistochemistry.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000500022