Base de dados : LILACS
Pesquisa : B01.300.300.500 [Categoria DeCS]
Referências encontradas : 41 [refinar]
Mostrando: 1 .. 10   no formato [Detalhado]

página 1 de 5 ir para página              

  1 / 41 LILACS  
              next record last record
seleciona
para imprimir
Fotocópia
Texto completo
Id: biblio-975564
Autor: García Posada, Mara Judith; García Allende, Natalia; Radosta, Mariana Florencia; Sánchez, Ana Victoria; Maldonado, Ivana.
Título: Micosis rino-orbito-cerebral: coinfección por Aspergillus sclerotiorum y Rhizopus microsporum en un huésped inmunosuprimido. Reporte de un caso / Rhino-orbital-cerebral mycoses: Aspergillus sclerotiorum infection and Rhyzopus microsporum in an immunosuppres sed host. A case report
Fonte: Infectio;23(1):55-57, Jan.-Mar. 2019. graf.
Idioma: es.
Resumo: Resumen Las micosis rino-cerebral, rino-orbito-cerebral y sinusopulmonar ocasionadas por especies de Mucorales y de Aspergillus se constituyen como una causa importan te de infección fúngica invasora asociada a una mortalidad mayor al 30%. La coinfección por dos o más especies en la forma rino-orbito-cerebral es infrecuente. Se describe un paciente con linfoma no Hodgkin, expuesto a múltiples esquemas quimioterápicos, en remisión completa, que presentó micosis con compromiso rino-orbito-cerebral por Aspergillus sclerotiorum y Rhizopus microsporum de rápida progresión con necesidad de tratamiento quirúrgico agresivo y terapia anti fúngica sistémica y local.

Abstract Rhino-orbital-cerebral and pulmonary mycosis caused by Mucorales and Aspergillus species have become an important cause of invasive fungal infection, with a 30% overall mortality rate. Rhino-orbital-cerebral disease caused by two or more species is uncommon. We present a patient with non-Hodgkin lymphoma, ex posed to aggressive chemotherapy, under complete remission, with acute onset of rhino-orbital-cerebral disease caused by Aspergillus sclerotiorum and Rhizopus microsporum, treated with aggressive surgery and both local and systemic antifungal therapy.
Descritores: Aspergillus
Rhizopus/virologia
Sinais e Sintomas Respiratórios
Mucorales
Micoses
-Linfoma não Hodgkin
Causalidade
Coinfecção
Infecções Fúngicas Invasivas
Microsporum
Limites: Humanos
Masculino
Idoso
Tipo de Publ: Relatos de Casos
Responsável: CO359.1 - ACIN - Asociación Colombiana de Infectologia


  2 / 41 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
Id: biblio-1051342
Autor: Pele, Milagre A; Rubio Ribeaux, Daylin; Rodrigues Vieira, Edson; Souza, Adriana F; Luna, Marcos A C; Montero Rodríguez, Dayana; Andrade, Rosileide F S; Sales Alviano, Daniela; Sales Alviano, Celuta; Barreto-Bergter, Eliana; Santiago, André L C M A; Campos-Takaki, Galba M.
Título: Conversion of renewable substrates for biosurfactant production by Rhizopus arrhizus UCP 1607 and enhancing the removal of diesel oil from marine soil
Fonte: Electron. j. biotechnol;38:40-48, Mar. 2019. tab, graf, ilus.
Idioma: en.
Projeto: CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico); . FACEPE (Fundação de Amparo à Ciência e Tecnologia de Pernambuco).
Resumo: BACKGROUND: The use of agro-industrial wastes to produce high value-added biomolecules such as biosurfactants is a promising approach for lowering the total costs of production. This study aimed to produce biosurfactants using Rhizopus arrhizus UCP 1607, with crude glycerol (CG) and corn steep liquor (CSL) as substrates. In addition, the biomolecule was characterized, and its efficiency in removing petroderivatives from marine soil was investigated. RESULTS: A 22 factorial design was applied, and the best condition for producing the biosurfactant was determined in assay 4 (3% CG and 5% CSL). The biosurfactant reduced the surface tension of water from 72 to 28.8 mN/m and produced a yield of 1.74 g/L. The preliminary biochemical characterization showed that the biosurfactant consisted of proteins (38.0%), carbohydrates (35.4%), and lipids (5.5%). The compounds presented an anionic character, nontoxicity, and great stability for all conditions tested. The biomolecule displayed great ability in dispersing hydrophobic substrates in water, thereby resulting in 53.4 cm2 ODA. The best efficiency of the biosurfactant in removing the pollutant diesel oil from marine soil was 79.4%. CONCLUSIONS: This study demonstrated the ability of R. arrhizus UCP1607 to produce a low-cost biosurfactant characterized as a glycoprotein and its potential use in the bioremediation of the hydrophobic diesel oil pollutant in marine soil
Descritores: Rhizopus/metabolismo
Tensoativos/metabolismo
Gasolina
-Solo
Tensoativos/toxicidade
Tensão Superficial
Biodegradação Ambiental
Ambiente Marinho
Zea mays
Agroindústria
Interações Hidrofóbicas e Hidrofílicas
Glicerol
Resíduos Industriais
Micelas
Mucorales/metabolismo
Responsável: CL1.1 - Biblioteca Central


  3 / 41 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Id: biblio-1171801
Autor: Carnovale Susana; Daneri Gabriela López.
Título: Lichtheimia sp. en un paciente inmunocomprometido / [Lichtheimia sp. in an immunodepressed patient].
Fonte: Rev. argent. microbiol;46(2):161-2, jun. 2014.
Idioma: es.
Descritores: Infecções dos Tecidos Moles/microbiologia
Mucorales/isolamento & purificação
Mucormicose/microbiologia
-Hospedeiro Imunocomprometido
Humanos
Masculino
Tipo de Publ: Relatos de Casos
Artigo de Revista
Responsável: AR5.1 - Centro de Gestión del Conocimiento y las Comunicaciónes


  4 / 41 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Brasil
Texto completo
Id: biblio-839358
Autor: Souza, Carlos Alberto Fragoso de; Lima, Diogo Xavier; Gurgel, Luciana M. S; Santiago, André Luiz Cabral Monteiro de Azevedo.
Título: Coprophilous Mucorales (ex Zygomycota) from three areas in the semi-arid of Pernambuco, Brazil
Fonte: Braz. j. microbiol;48(1):79-86, Jan.-Mar. 2017. tab, graf.
Idioma: en.
Projeto: Fundação de Amparo à Ciência e Tecnologia do Estado de Pernambuco; . Conselho Nacional de Desenvolvimento Científico e Tecnológico; . Programa de Pesquisa em Biodiversidade do semiárido.
Resumo: Abstract Mucorales comprises fungi commonly isolated as saprobes from soil, dung, stored grains and plants. Although these fungi have been studied in several countries, there are relatively a few reports of them in semi-arid areas. Therefore, the aims of the present study were to assess and compare the Mucorales communities in dung from different species and breeds of herbivores in the semi-arid of Pernambuco, based on the frequency of occurrence and species richness of these fungi. Samples of dung collected in the cities of Arcoverde, Serra Talhada and Sertânia were incubated in moist chambers in triplicate. Altogether, 24 taxa of Mucorales distributed in the genera Absidia, Circinella, Cunninghamella, Lichtheimia, Mucor, Pilobolus, Rhizopus and Syncephalastrum were identified. The highest species richness was found in sheep excrement. Mucor circinelloides f. griseo-cyanus was the most common taxon, followed by M. ramosissimus. The similarity of the composition of Mucorales species was greatest between the excrements of Guzerá and Sindi breeds (bovine). All mucoralean species isolated are being cited for the first time from animal dung found in Caatinga and a new species of Mucor was recorded. An identification key for species of Mucorales from dung in the semi-arid region of Brazil is provided.
Descritores: Microbiologia Ambiental
Mucorales
-Brasil
Bovinos
Ovinos
Análise por Conglomerados
Biodiversidade
Herbivoria
Mucorales/classificação
Limites: Animais
Responsável: BR1.1 - BIREME


  5 / 41 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Brasil
Amaral, Ana Claudia F.
Texto completo
Id: lil-748265
Autor: Ramos, Aline de Souza; Ribeiro, Joyce Benzaquem; Teixeira, Bruna Gomes; Ferreira, José Luiz Pinto; Silva, Jefferson Rocha de A.; Ferreira, Alexandre do Amaral; Souza, Rodrigo Octavio Mendonça Alves de; Amaral, Ana Claudia F..
Título: Hydroxylation of 1,8-cineole by Mucor ramannianus and Aspergillus niger
Fonte: Braz. j. microbiol;46(1):261-264, 05/2015. tab, graf.
Idioma: en.
Resumo: The monoterpenoid 1,8-cineole is obtained from the leaves of Eucalyptus globulus and it has important biological activities. It is a cheap natural substrate because it is a by-product of the Eucalyptus cultivation for wood and pulp production. In this study, it was evaluated the potential of three filamentous fungi in the biotransformation of 1,8-cineole. The study was divided in two steps: first, reactions were carried out with 1,8-cineole at 1 g/L for 24 h; afterwards, reactions were carried out with substrate at 5 g/L for 5 days. The substrate was hydroxylated into 2-exo-hydroxy-1,8-cineole and 3-exo-hydroxy-1,8-cineole by fungi Mucor ramannianus and Aspergillus niger with high stereoselectivity. Trichoderma harzianum was also tested but no transformation was detected. M. ramannianus led to higher than 99% of conversion within 24 h with a starting high substrate concentration (1 g/L). When substrate was added at 5 g/L, only M. ramannianus was able to catalyze the reaction, but the conversion level was 21.7% after 5 days. Both products have defined stereochemistry and could be used as chiral synthons. Furthermore, biological activity has been described for 3-exo-hydroxy-1,8-cineol. To the best of our knowledge, this is the first report on the use of M. ramannianus in this reaction.
Descritores: Aspergillus niger/metabolismo
Cicloexanóis/metabolismo
Eucalyptus/química
Monoterpenos/metabolismo
Mucorales/metabolismo
-Hidroxilação
Fatores de Tempo
Trichoderma/metabolismo
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: BR1.1 - BIREME


  6 / 41 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
Id: lil-684294
Autor: Álvarez Duarte, Eduardo.
Título: El Subphylum Mucoromycotina: generalidades y aspectostaxonómicos recientes / Mucoromycotina Subphylum: overview and recent taxonomic aspects
Fonte: Bol. micol. (Valparaiso En linea);28(1):16-25, jun. 2013. ilus.
Idioma: es.
Resumo: El subphylum Mucoromycotina es un grupo de hongos ubicuos, saprobios, caracterizados por la presencia de hifas cenocíticas. También se caracterizan por presentar una fase sexual con la formación de una zigospora. Los mucormycetes son capaces de infectar plantas, animales y seres humanos. Recientemente, varios estudios han comunicado de la creciente incidencia de mucormicosis en pacientes inmunocomprometidos e inmunocompetentes. Dados los avances en biología molecular, la sistemática de este grupo de hongos ha experimentado varios cambios taxonómicos en los últimos años. Este artículo discutirá los principales cambios taxonómicos, en especial de los géneros y especies de interés clínico.

The subphylum Mucoromycotina is a group of fungi with several ubiquitous, and saprotrophic species which are characterized by the presence of coenocytic hyphae. Also have a sexual phase characterized by the formation of zygospores. The mucormycetes are able to infect plants, animals and humans. Recently, several studies have reported the increasing incidence of mucormycosis in both immunocompromised and immunocompetent patients. Given the advances in molecular biology, the systematic of this group of fungi has experimented several taxonomical changes. This paper will discuss the major taxonomic changes, particularly of those genera and species of clinical interest.
Descritores: Aerossóis
Fungos
Micoses
Mucorales/classificação
Mucorales/patogenicidade
Mucormicose/epidemiologia
Mucormicose/etiologia
Tipo de Publ: Revisão
Responsável: CL2.1 - Biblioteca de Medicina


  7 / 41 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Brasil
Maia, Leonor Costa
Texto completo
Id: lil-676897
Autor: Santiago, André Luiz Cabral Monteiro de Azevedo; Santos, Paulo Jorge Parreira dos; Maia, Leonor Costa.
Título: Mucorales from the semiarid of Pernambuco, Brazil
Fonte: Braz. j. microbiol;44(1):299-305, 2013. tab.
Idioma: en.
Projeto: Fundação de Amparo à Ciência e Tecnologia do Estado de Pernambuco; . Conselho Nacional de Desenvolvimento Científico e Tecnológico.
Resumo: Nineteen taxa of Mucorales, belonging to Absidi, Apophysomyces, Cunninghamella, Fennellomyces, Lichtheimi, Mucor, Mycotypha, Rhizopus and Syncephalastrum were isolated from 36 composite soil samples in three semiarid areas in the State of Pernambuco (Triunfo, Cabrobó and Belém de São Francisco), Northeast Brazil, which are characterized by Caatinga vegetation. Triunfo is preserved, whereas Cabroró and Belém de São Francisco are experiencing low and severe desertification processes, respectively. Mucorales were isolated in Petri dishes in triplicate from 5 mg samples of soil placed on the surface of wheat germ agar plus chloramphenicol and Cercobin [Dimethyl 4,49-(103 phenylene) bis (3-thioallophanate)] medium. The plates were left on a bench at room temperature (28 ± 2 ºC) for 72 h of alternating dark and light periods. Absidia cylindrospora presented the highest amount of CFU/g of soil, followed by L. hyalospor, C. phaeospora and C. echinulata var. echinulata. The latter, and R. microsporus var. microsporus, presented the highest frequencies of occurrence. Soils from Triunfo showed higher diversity of Mucorales than the samples from the other areas, although without differing statistically in relation to species richness. The communities of Mucorales from the degraded areas were more similar, while that from the preserved area was quite different. Most of the identified specimens have been commonly isolated from soil in other Brazilian regions, which indicates that they are not endemic of the semiarid. Eleven taxa are registered for the first time in this ecosystem, while F. heterothallicus is reported for the first time in Brazil.
Descritores: Zona Árida
Biodiversidade
Classificação
Ecossistema
Microbiologia Ambiental
Mucorales/isolamento & purificação
-Biodegradação Ambiental
Fungos
Métodos
Solo
Tipo de Publ: Estudo Comparativo
Responsável: BR32.1 - Serviço de Biblioteca e Informação Biomédica


  8 / 41 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Chile
Texto completo
Id: lil-591886
Autor: Alpat, Senol; Alpat, Sibel Kilinç; Çadirci, Bilge Hilal; Õzbayrak, Õzge; Yasa, Ihsan.
Título: Effects of biosorption parameter: kinetics, isotherm and thermodynamics for Ni(II) biosorption from aqueous solution by Circinella sp
Fonte: Electron. j. biotechnol;13(5):4-5, Sept. 2010. ilus, tab.
Idioma: en.
Resumo: Circinella sp. was employed as a biosorbent for removal of Ni(II) from aqueous solution. The biosorption kinetics and isotherms were investigated. The effect of several parameters, such as biosorbent dosage, contact time, initial concentration, pH and temperature, on biosorption process was evaluated. The kinetic studies indicated that the biosorption followed pseudo-second order kinetic model. Biosorption behaviour of Ni(II) on Circinella sp. was expressed by both Langmuir and Freundlich isotherms. The equilibrium data fit better to the Langmuir model compared to the Freundlich model in concentration range studied (1.0-3.0 mM). The thermodynamic parameters (AG°, AH° and AS°) were also determined, and it was found that the Ni(II) biosorption by Circinella sp. was spontaneous and endothermic in nature.
Descritores: Mucorales/metabolismo
Níquel/metabolismo
-Adsorção
Biodegradação Ambiental
Poluentes Químicos da Água/isolamento & purificação
Concentração de Íons de Hidrogênio
Isoterma
Cinética
Soluções
Termodinâmica
Responsável: CL1.1 - Biblioteca Central


  9 / 41 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Id: lil-585731
Autor: Salim, R; Runco, R; Alvarez, C; Romano, S; Charre, M.
Título: Zigomicosis cutánea primaria por Rhyzopus oryzae en una niña con leucemia linfoblástica aguda tipo B / Primary cutaneous zygomycosis by Rhyzopus oryzae in a girl diagnosed with an acute lymphoblastic leukemia B type
Fonte: Bol. micol;23:35-41, dic. 2008. ilus.
Idioma: es.
Resumo: La Zigomicosis es una infección infrecuente causada por hongos oportunistas integrantes del orden Mucorales, que se presenta en pacientes de alto riego como en: leucemia, linfomas con neutropenia prolongada, cetoacidosis diabética, malnutrición severa, ruptura de la integridad de la barrera cutánea y terapia inmunosupresora. Se presenta un caso de Zigomicosis cutánea en una paciente pediátrica con leucemia linfoblástica aguda de tipo B, con severa neutropenia y tratamiento con corticoides. A los cinco días de su hospitalización desarrolló en el antebrazo (zona de punción venosa), una lesión indurada, eritematosa, que progresó y ulceró. A partir de exudados y biopsias del tejido subcutáneo se realizaron exámenes microscópicos directos con KOH, cultivos en agar Sabouraud y estudio histológico a través de técnicas convencionales de hematoxilinaeosina y PAS. Los análisis de los materiales clínicos revelaron la presencia de hifas hialinas, no tabicadas, gruesas, compatibles con un Zygomycete. En todos los tubos se obtuvo abundante desarrollo de un hongo filamentoso, identificado como Rhizopus oryzae. Posteriormente a la escisión quirúrgica y tratamiento con anfotericina B se obtuvo una evolución favorable del paciente hasta el presente.

Zygomycosis is an infrequent infection caused by opportunistic fungi which belong to the order Mucorales and which is present in high risk patients diagnosed with : leukemia, lymphomas with prolonged neutropenia, diabetic cetoacidosis, severe malnutrition, rupture of the entire cutaneous barrier and immunesuppressing therapy. This paper deals with a case of cutaneous Zygomycosis in a pediatric patient diagnosed with acute lymphoblastic leukemia B type, suffering a severe neutropenia and corticosteroid treatment. On the fifth day of hospitalization, her forearm (venous puncture zone) showed an indured, erimatose lesion which progressed and ulcerated. Collection of exudates and biopsies of subcutaneous tissue served to carry out direct microsco-pic examinations with KOH, cultures in Sabouraud Agar and a histologic study through conventional hematoxilin-eosin and PAS techniques. Analyses of the clinical materials revealed the presence of hyaline, not septated and broad hyphae suitable to a Zygomycete. In all the tubes there was an abundant development of filamentous fungus identified as Rhizopus oryzae. After the surgical scission and treatment with anfotericine B, the patient showed a favorable evolution up to now.
Descritores: Mucorales
Leucemia-Linfoma Linfoblástico de Células Precursoras
Zigomicose/classificação
Zigomicose/diagnóstico
Zigomicose/etiologia
Zigomicose/microbiologia
Zigomicose/terapia
-Fungos
Limites: Humanos
Feminino
Pré-Escolar
Tipo de Publ: Relatos de Casos
Responsável: CL2.1 - Biblioteca de Medicina


  10 / 41 LILACS  
              first record previous record
seleciona
para imprimir
Fotocópia
Id: lil-530998
Autor: Martínez, J.
Título: Mucormicosis: infección necrotizante como complicación de dermolipectomía abdominal / Mucormycosis: necrotizing infection as a complication of abdominal dermolipectomy
Fonte: Col. med. estado Táchira;16(1):61-64, ene.-mar. 2007. ilus.
Idioma: es.
Resumo: Las infecciones necrotizantes de los tejidos blandos varían en su presentación clínica, pero en general son de curso grave y alta mortalidad. El cuadro clínico incluye: fiebre, celulitis, edema, crepitación, necrosis y sepsis; con frecuencia existe un antecedente o traumático quirúrgico. Como hallazgo operatorio se encuentra necrosis de la piel y tejido subcutáneo, con o sin mionecrosis. El tratamiento es una inmediata y amplia debridación acompañada con antibioticoterapia de amplio espectro. Se presenta un caso clínico de infección necrotizante de tejidos blandos por mucor, en una mujer con antecedente de abdominoplastia y lipoescultura con progresión crítica y evolución fatal. La mucormicosis es una patología agresiva, cuyo diagnostico clínico no es fácil por lo cual debe ser considerada seriamente por el cirujano plástico.
Descritores: Antibacterianos/uso terapêutico
Gangrena/patologia
Mucor/citologia
Mucor/isolamento & purificação
Mucormicose/cirurgia
Mucormicose/mortalidade
Mucormicose/patologia
Parede Abdominal/cirurgia
-Antibacterianos/farmacologia
Cesárea
Dermatomicoses/patologia
Dermatopatias Infecciosas/etiologia
Fungos/isolamento & purificação
Mucorales/isolamento & purificação
Limites: Humanos
Adulto
Feminino
Tipo de Publ: Relatos de Casos
Revisão
Responsável: VE1.1 - Biblioteca Humberto Garcia Arocha



página 1 de 5 ir para página              
   


Refinar a pesquisa
  Base de dados : Formulário avançado   

    Pesquisar no campo  
1  
2
3
 
           



Search engine: iAH v2.6 powered by WWWISIS

BIREME/OPAS/OMS - Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde