Resultado da pesquisa (3)
Termo utilizado na pesquisa co-infections
#1 - Cutaneous fungal infections secondary to avian pox in Northeast Brazil
Abstract in English:
This study describes the epidemiological and clinical-pathological aspects of outbreaks of avian pox diagnosed in poultry associated with fungal co-infections. A retrospective study was carried out, and cases of avian pox with suspected associated fungal infection were selected. The slides were subjected to routine and special histochemical staining in cases of suspected fungal infection, in addition to performing the immunohistochemical technique. Macroscopically, there were nodular lesions with crust formation, and histologically, the lesions were characterized by hyperplasia of the spinous layer associated with multiple eosinophilic intracytoplasmic inclusions. In seven cases, morphologically compatible structures with fungi were verified through black impregnation with GMS and strongly stained in pink with PAS. The morphotintorial aspects were suggestive of fungi belonging to the genus Aspergillus sp. and Candida sp. The diagnosis of fungal co-infections was confirmed through immunohistochemistry, with positive immunostaining for fungi of the genus Aspergillus sp. (five cases) and Candida sp. (two cases). It is concluded that the occurrence of fungal co-infections secondary to the cutaneous lesions of avian pox represents a complicating factor of the disease, favoring the weakness of these animals and death. Therefore, the investigation of associated secondary agents is necessary.
Abstract in Portuguese:
Este artigo descreve os aspectos epidemiológicos e clínico-patológicos de surtos de varíola aviária diagnosticada em aves domésticas associados a coinfecções fúngicas. Foi realizado um estudo retrospectivo e selecionados os casos de varíola aviária com suspeita de infecção fúngica associada. As lâminas foram submetidas às colorações histoquímicas de rotina e especiais, nos casos de suspeita de infecção fúngica, além de realização da técnica de imuno-histoquímica. Macroscopicamente, haviam lesões nodulares com formação de crostas, e histologicamente, as lesões caracterizavam-se por hiperplasia da camada espinhosa associada a múltiplas inclusões intracitoplasmáticas eosinofílicas. Em sete casos verificou-se a presença de estruturas morfologicamente compatíveis com fungos, através de impregnação em preto por GMS e coradas fortemente em rosa por PAS. Os aspectos morfotintoriais foram sugestivos de fungos pertencentes aos gêneros Aspergillus sp. e Candida sp. O diagnóstico das coinfecções fúngicas foi confirmado através da imuno-histoquímica, com imunomarcação positiva para fungos dos gêneros Aspergillus sp. (cinco casos) e Candida sp. (dois casos). Através desses dados, pode-se concluir que a ocorrência de coinfecções fúngicas secundárias às lesões cutâneas de varíola aviária representam um fator complicador da doença, favorecendo a debilidade desses animais e óbito. Sendo assim, é necessária a investigação de agentes secundários associados.
#2 - Frequency and hematological alterations of different hemoplasma infections with retrovirusis co-infections in domestic cats from Brazil, 36(8):731-736
Abstract in English:
ABSTRACT.- Firmino F.P., Aquino L.C., Marçola T.G., Bittencourt M.V., McManus C.M. & Paludo G.R. 2016. Frequency and hematological alterations of different hemoplasma infections with retrovirusis co-infections in domestic cats from Brazil. Pesquisa Veterinária Brasileira 36(8):731-736. Laboratório de Patologia Clínica, Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília, Campus Universiário Darcy Ribeiro, Brasília, DF 70910-900, Brazil. E-mail: giane@unb.br
Mycoplasma haemofelis is the agent of feline infectious anemia, although Candidatus M. haemominutum can also be associated. This study evaluated the frequency and hematological alterations caused by hemoplasma infections and co-infections with FeLV, FIV and Toxoplasma gondii in domestic cats from two distinct areas (urban - G1 and periurban - G2) of Brasília, Brazil. One hundred cats were evaluated, 51 from the G1 area and 49 from G2. No cats were positive for T. gondii. Hemoplasma infection was diagnosed in 33% cats from G1 and 32.6% from G2 (p>0.05). In G1 35.3% of the positive cats were infected with Mycoplasma haemofelis, 47.06% with Candidatus Mycoplasma haemominutum and 17.64% with mixed hemoplasma species infection; 12.5% of the cats identified as PCR positive in G2 were infected with Mycoplasma haemofelis, 18.75% with Candidatus Mycoplasma haemominutum and 68.75% with mixed infection. Cats from the periurban area had higher mixed hemoplasmas infection rates than those from urban area, and most of them were asymptomatic carriers. Cytology results were positive in only 5% of cats from G1. Mycoplasma haemofelis infected cats had normocytic normochromic anemia while the cats infected with Candidatus Mycoplasma haemominutum or with both species did not. 37.2% of G1 cats were co-infected with Mycoplasma haemofelis and FeLV, and presented lower PCV and hemoglobin concentration than those infected only with Mycoplasma haemofelis. The co-infection with Candidatus Mycoplasma haemominutum and FeLV produced lower WBC, segmented cells and platelets, and increased total protein concentration.
Abstract in Portuguese:
RESUMO.- Firmino F.P., Aquino L.C., Marçola T.G., Bittencourt M.V., McManus C.M. & Paludo G.R. 2016. Frequency and hematological alterations of different hemoplasma infections with retrovirusis co-infections in domestic cats from Brazil. [Frequência e alterações hematológicas causadas por diferentes infecções por hemoplasmas com co-infecções por retrovírus em gatos domésticos do Brasil.] Pesquisa Veterinária Brasileira 36(8):731-736. Laboratório de Patologia Clínica, Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília, Campus Universiário Darcy Ribeiro, Brasília, DF 70910-900, Brazil. E-mail: giane@unb.br
Mycoplasma haemofelis é o principal agente causador da anemia infecciosa felina, apesar de outras espécies de hemoplasmas, Candidatus M. haemominutum e Candidatus M. turicensis, também estarem associadas à hemoplasmose felina. O presente estudo avaliou a frequência de hemoplasmas, as principais alterações hematológicas associadas com a infecção e co-infecções com FeLV, FIV e Toxoplasma gondii em gatos domésticos de duas áreas diferentes (urbana - G1 e periurbana - G2) de Brasília, Brasil. 100 gatos foram avaliados, 51 de G1 e 49 de G2. Nenhum gato foi positivo para T. gondii. Hemoplasmose foi diagnosticada em 33% dos gatos de G1 e 32,6% de G2 (p>0,05). Em G1, 35.3% dos gatos hemoplasma positivos estavam infectados por Mycoplasma haemofelis, 47,06% por Candidatus Mycoplasma haemominutum e 17,64% apresentaram infecção concomitante por Mycoplasma haemofelis e Candidatus Mycoplasma haemominutum. Em G2, 12,5% dos gatos hemoplasma positivos estavam infectados por Mycoplasma haemofelis, 18,75% por Candidatus Mycoplasma haemominutum e 68,75% apresentaram infecção concomitante por Mycoplasma haemofelis e Candidatus Mycoplasma haemominutum. Gatos da região periurbana eram, em sua maioria, assintomáticos e apresentaram mais infecção concomitante por duas espécies de hemoplasmas do que gatos da região urbana. Os resultados da citologia foram positivos apenas em 5% dos gatos de G1. Gatos com infectados apenas com Mycoplasma haemofelis apresentaram anemia normocítica normocrômica e gatos com infecção única com Candidatus Mycoplasma haemominutum ou em combinação com Mycoplasma haemofelis não apresentaram alterações hematológicas. 37,2% dos gatos de G1 estavam co-infectados por Mycoplasma haemofelis e FeLV, e apresentaram VG e concentração de hemoglobina menores do que os gatos infectados apenas por Mycoplasma haemofelis. A co-infecção por Candidatus Mycoplasma haemominutum e FeLV resultou em baixo número de leucócitos, segmentados e plaquetes, além de aumento das concentrações de proteínas totais.
#3 - Intestinal lesions in pigs affected with postweaning multisystemic wasting syndrome, p.313-318
Abstract in English:
Abstract.- Zlotowski P., Corrêa A.M.R., Barcellos D.E.S., Cruz C.E.F., Asanome W., Barry A.F., Alfieri A.A. & Driemeier D. 2008. Intestinal lesions in pigs affected with postweaning multisystemic wasting syndrome. Pesquisa Veterinária Brasileira 28(6):313-318. Departamento de Patologia Clinica Veterinária, Faculdade de Medicina Veterinária, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9090, Porto Alegre, RS 91540-000, Brazil. E-mail: davetpat@ufrgs.br
Samples of mesenteric lymph nodes and intestines from 79 unthrifty 3- to 5-month-old postweaning pigs, confirmed as naturally affected with postweaning multisystemic wasting syndrome (PMWS), were studied. Pigs originated from 12 farms in southern Brazil and were selected on the basis of clinical signs and/or gross lesions suggestive of enteric disorder. Lymphohistiocytic infiltrates of varying intensity were associated with anti-porcine circovirus type 2 (anti-PCV2) immunostaining (IS) in samples of intestines and mesenteric lymph nodes from all pigs. Although most findings were similar to those described in PCV2-associated enteritis, anti-PCV2 IS in association with depletion of the goblet cell mucin stores (24 pigs), diffuse ileal villous atrophy and fusion (18 pigs), and dilatation of the lymphatic vessels (11 pigs) combined or not with lymphangitis were also observed. PCV2 antigen was immunohistochemically demonstrated in the cytoplasm and nuclei from intralesional epithelial cells, histiocytes, and endothelial-like cells in intestinal tissues. Together these findings imply an association with PCV2. The presence of co-infections by Lawsonia intracellularis, Brachyspira spp., Mycobacterium spp., Salmonella spp., rotavirus, parvovirus, coronavirus and enteric calicivirus with PCV2 in the intestinal lesions was investigated.
Abstract in Portuguese:
Abstract.- Zlotowski P., Corrêa A.M.R., Barcellos D.E.S., Cruz C.E.F., Asanome W., Barry A.F., Alfieri A.A. & Driemeier D. 2008. Intestinal lesions in pigs affected with postweaning multisystemic wasting syndrome. Pesquisa Veterinária Brasileira 28(6):313-318. Departamento de Patologia Clinica Veterinária, Faculdade de Medicina Veterinária, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9090, Porto Alegre, RS 91540-000, Brazil. E-mail: davetpat@ufrgs.br
Samples of mesenteric lymph nodes and intestines from 79 unthrifty 3- to 5-month-old postweaning pigs, confirmed as naturally affected with postweaning multisystemic wasting syndrome (PMWS), were studied. Pigs originated from 12 farms in southern Brazil and were selected on the basis of clinical signs and/or gross lesions suggestive of enteric disorder. Lymphohistiocytic infiltrates of varying intensity were associated with anti-porcine circovirus type 2 (anti-PCV2) immunostaining (IS) in samples of intestines and mesenteric lymph nodes from all pigs. Although most findings were similar to those described in PCV2-associated enteritis, anti-PCV2 IS in association with depletion of the goblet cell mucin stores (24 pigs), diffuse ileal villous atrophy and fusion (18 pigs), and dilatation of the lymphatic vessels (11 pigs) combined or not with lymphangitis were also observed. PCV2 antigen was immunohistochemically demonstrated in the cytoplasm and nuclei from intralesional epithelial cells, histiocytes, and endothelial-like cells in intestinal tissues. Together these findings imply an association with PCV2. The presence of co-infections by Lawsonia intracellularis, Brachyspira spp., Mycobacterium spp., Salmonella spp., rotavirus, parvovirus, coronavirus and enteric calicivirus with PCV2 in the intestinal lesions was investigated.
