Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 129
Filter
1.
Article in Portuguese | LILACS, CONASS, ColecionaSUS, SES-GO | ID: biblio-1532024

ABSTRACT

A mastectomia preventiva relacionada às neoplasias de mama precoces é um tema de grande importância na área da oncologia, especialmente para mulheres com alto risco genético de desenvolver câncer de mama. Objetivo: Descrever como a mastectomia relaciona-se com a prevenção de neoplasias de mama precoces. Métodos: Trata-se de uma revisão integrativa da literatura. Para construção da pesquisa, a coleta e análise de dados foi realizada através do Portal da Biblioteca Virtual da Saúde e da base de dados Medical Literature Analysis and Retrievel System Online via PubMed, através dos Descritores em Ciências da Saúde (DeCS): "Mastectomia Profilática", "Neoplasias da Mama" e "Fatores de Risco" combinados entre si pelo operador booleano AND. Como critérios de inclusão: estudos relacionados à temática excluindo-se as revisões de literatura, com delimitação temporal dos últimos cinco anos, nos idiomas inglês, português e espanhol. A questão norteadora foi construída com base na estratégia PICo de acordo com a descrição (População, Interesse e Contexto). Resultados: Foram encontrados 76 artigos, destes 64 foram excluídos devido aos filtros utilizados e a leitura dos resumos e na íntegra, restando apenas 12 estudos para compor a amostra final. Em suma, os estudos demonstram que a mastectomia preventiva pode oferecer às mulheres com alto risco genético uma opção para reduzir suas chances de desenvolver câncer de mama. Conclusão: A mastectomia preventiva relacionada às neoplasias de mama precoces é uma opção terapêutica complexa e individualizada, que busca reduzir o risco de desenvolvimento ou recorrência do câncer de mama em mulheres de alto risco


: Preventive mastectomy related to early breast neoplasms is a topic of great concern in the field of oncology, especially for women with a high genetic risk of developing breast cancer. Objective: To describe how mastectomy is related to the prevention of early breast cancer. Methods: This is an integrative literature review. For the construction of the research, data collection and analysis was carried out through the Virtual Health Library Portal and the Medical Literature Analysis and Retrievel System Online database via PubMed, through the Health Sciences Descriptors (DeCS): "Prophylactic Mastectomy","Breast Neoplasms" and "Risk Factors" combined with the Boolean AND operator. As inclusion criteria: studies related to the theme excluding literature reviews,with publication time delimitation of the last five years, in English, Portuguese and Spanish. The research question was structured based on the PICo strategy according to the description (Population, Interest and Context). Results: 76 articles were found, of which 64 were excluded after the filters application. We performed the reading of abstracts and full text, and 12 studies were selected to compose the final sample. In summary, studies demonstrate that preventive mastectomy can offer women at high genetic risk an option to reduce their chances of developing breast cancer. Conclusion: Preventive mastectomy related to early breast neoplasms is a complex and individualized therapeutic option that seeks to reduce the risk of breast cancer development or recurrence in high-risk women


Subject(s)
Humans , Female , Breast Neoplasms , Early Detection of Cancer , Risk Factors , Prophylactic Mastectomy/psychology
3.
Rev. bioét. (Impr.) ; 30(4): 791-804, out.-dez. 2022. tab
Article in Portuguese | LILACS | ID: biblio-1423046

ABSTRACT

Resumo O consentimento livre e esclarecido, como forma de garantir envolvimento e participação em tratamento, é parte da abordagem terapêutica à pessoa com problemas relacionados ao uso de álcool. O valor ético central da autonomia e sua imanência para o consentimento informado apresenta desafios ético-clínicos no caso de pessoa que busca tratamento em situação de coerção, ansiedade ou depressão. Entre abril de 2018 e junho de 2019, conduziu-se estudo observacional longitudinal prospetivo que incluiu 150 pessoas com problemas relacionados ao uso de álcool assistidas em unidade especializada de tratamento. O objetivo foi verificar se o consentimento com interferência de coerção, perturbação de ansiedade ou depressão determina a participação terapêutica. A ausência de coerção judicial e sintomatologia ansiosa e a maior valorização da perceção de autonomia no consentimento informado relacionaram-se com a participação. Propõem-se contributos para reforçar a prática do consentimento informado assente no reconhecimento e promoção da autonomia.


Abstract Informed consent, as a way to ensure involvement and treatment adherence, is part of the therapeutic approach to individuals with alcohol-related disorders. Autonomy, as a core ethical value, and its immanence for informed consent presents ethical-clinical challenges in the case of individuals seeking treatment due to coercion, anxiety, or depression. Between April 2018 and June 2019, a prospective longitudinal observational study was conducted with 150 people with alcohol-related disorders attending a specialized treatment facility. The goal was to verify whether consent obtained under coercion, or influenced by anxiety disorder or depression determines therapeutic participation. Absence of judicial coercion and anxious symptomatology and the greater value placed on perceived autonomy in informed consent were related to participation. The study proposes contributions to strengthen the practice of obtaining informed consent based on the recognition and promotion of autonomy.


Resumen El consentimiento informado, que garantiza comprometimiento y participación en el tratamiento, forma parte del enfoque terapéutico del manejo de la persona con problemas relacionados al consumo de alcohol. El valor ético de la autonomía y su inmanencia para el consentimiento informado tiene desafíos ético-clínicos en el caso de personas que buscan tratamiento en situación de coerción, ansiedad o depresión. Entre abril de 2018 y junio de 2019 se realizó un estudio observacional longitudinal prospectivo con 150 personas con problemas relacionados al consumo de alcohol, asistidas por un centro de tratamiento especializado. Este estudio pretendió confirmar si el consentimiento por coerción, trastorno de ansiedad o depresión influye en la participación terapéutica. La ausencia de coerción judicial y de síntomas ansiosos, así como la mayor autonomía en el consentimiento se relacionaron con la participación. Se proponen aportes para reforzar la práctica del consentimiento informado desde el reconocimiento y promoción de la autonomía.


Subject(s)
Anxiety Disorders , Patient Participation , Bioethics , Coercion , Alcohol-Related Disorders , Depression , Informed Consent
5.
Braz. arch. biol. technol ; 64: e21200534, 2021. tab, graf
Article in English | LILACS | ID: biblio-1345496

ABSTRACT

Abstract Guarana, the fruit of Paullinia cupana, is known for its stimulating and medicinal properties by the Amazonian indigenous population and communities. However, it presents serious phytopathological problems, such as anthracnose disease caused by Colletotrichum spp. The objective of this study was to verify if C. siamense, a mycovirus-carrying endophytic fungus, could protect guarana seedlings, by reducing or by eliminating characteristic disease symptoms. Other physiological changes in the plant caused by the presence of this endophyte were also evaluated. The cuttings of the Cereçaporanga cultivar were dipped in a biological control suspension and planted in a specific substrate. After four months in the greenhouse, the seedlings were sprayed with a suspension of phytopathogen conidia, and a portion of these seedlings received the fungicide indicated for the crop to be compared with the control seedlings. After 28 days, the number of lesions, morphophysiological and macro characteristics, and leaf micronutrients were evaluated. The seedlings treated with C. siamense showed a lower percentage of lesions and an increased aerial part and root system compared to the other treatments. There were no significant differences between treatments regarding the percentage of macronutrients and micronutrients.


Subject(s)
Colletotrichum/virology , Paullinia , Fungal Viruses , Amazonian Ecosystem
6.
Pesqui. vet. bras ; 40(12): 955-962, Dec. 2020. tab, ilus
Article in English | LILACS, VETINDEX | ID: biblio-1155039

ABSTRACT

The present study aimed to evaluate and diagnose pathologies of the reproductive system of slaughtered sheep in slaughterhouses in the state of Bahia since there are few data on the subject as well as it is important to note the diagnosis of these diseases to apply appropriate control and prophylaxis measures. The research was carried out in slaughterhouses in the state of Bahia according to the "Serviço de Inspeção Federal" and "Serviço de Inspeção Estadual" for sheep slaughter. From July 2018 to February 2019, visits and monitoring of 1,072 slaughtered sheep were carried out. The animals came from 22 municipalities in the state of Bahia, aged from six to 18 months. During slaughter, the sheep reproductive systems were sectioned for evisceration and lesion collection. Additionally, epidemiological surveys related to origin, age, and race were obtained. For bacteriological examination, collections were performed with sterile scalpel slides and swabs in Stuart medium sterile tubes and refrigerated in a thermal box. For histopathological analysis, fragments were fixed in 10% formaldehyde and routinely processed for histology, stained with Hematoxylin and Eosin (HE). A study of the sheep's main pathological changes in slaughterhouses in the state of Bahia was carried out, in which 1.072 genital systems were evaluated, and 211 alterations were identified. The most affected reproductive organs were the ovaries (65.3%), followed by the uterus (29.4%) and uterine tubes (5.3%). In the ovaries, the most frequent lesion was a follicular cyst (34.1%); in the fallopian tubes, the cysts represented 3.3% of the lesions, and in the womb, endometritis was observed in 9% of the animals. Other pathologies identified in the ovaries were: luteinized cyst (2.3%); cystic granulosa cell tumor (0.5%); benign lesion (0.5%); agenesis unilateral (0.5%), in addition to other changes of little clinical significance, such as corpus luteum cysts (11.8%) and paraovarian cysts (15.6%). In the fallopian tubes, hydrosalpinx was observed (1%), as well as adenoma (0.5%), agenesis (0.5%), and cysts (3.3%). Uterine lesions included hydrometra (2.3%); Cystic Endometrial Hyperplasia (CEH), abscess, and pyometra (1.4% each); adenomyosis, womb sera petechiae, and total segmental aplasia (1% each); two pregnant uterus, in early pregnancy, presented pyometra (0.9%), however, no change was observed in the fetuses; and uterine polyp (0.5%). Ectopic pregnancy with fetal maceration (0.5%) was observed; vaginitis occurred in 0.5% of the animals, and endometrial melanosis in 8.5%. The high incidence of follicular cysts and endometritis are characterized as diseases that reduce the reproductive efficiency in herds, causing infertility and economic losses in production.(AU)


O objetivo do presente trabalho foi avaliar e diagnosticar alterações do sistema reprodutor de ovelhas abatidas em abatedouros frigoríficos no estado da Bahia. A pesquisa foi realizada em abatedouros frigoríficos do estado da Bahia com Serviços de Inspeção Federal e Estadual no abate de ovinos. No período de julho de 2018 a fevereiro de 2019 foram realizadas visitas e acompanhamento do abate de 1.072 ovelhas. Os animais eram provenientes de 22 municípios do estado da Bahia, com idade entre 6 a 18 meses. Durante o abate, na evisceração foram seccionados os sistemas reprodutores das ovelhas para avaliação e coleta das lesões. Adicionalmente foram obtidos inquéritos epidemiológicos relacionados à procedência, idade e raça. Para o exame bacteriológico, as coletas foram realizadas com lâminas de bisturi estéreis e swabs em tubos estéreis com meio Stuart e refrigeradas em caixa térmica. Para análise histopatológica, os fragmentos foram fixados em formol a 10% e processados de forma rotineira para histologia e corados pela hematoxilina e eosina (HE). Entre 1.072 sistemas genitais avaliados, identificou-se 211 alterações. Os órgãos do sistema reprodutor mais acometidos foram os ovários (65,3%), útero (29,4%) e tubas uterinas (5,3%). Nos ovários, a lesão mais frequente foi o cisto folicular (34,1%); no útero a endometrite (9%) e nas tubas uterinas, os cistos representaram (3,3%). Outras lesões identificadas nos ovários foram: cisto luteinizado (2,3%); tumor de células da granulosa (0,5%); adenoma (0,5%); agenesia unilateral (0,5%), além de outras alterações de pouco significado clínico, como cistos paraovarianos (15,6%) e corpo lúteo cístico (11,8%). Nas tubas uterinas observou-se, além dos cistos tubo-ovarianos (3,3%), hidrossalpinge (1%), adenoma (0,5%) e agenesia (0,5%). As lesões uterinas foram endometrite (9%), hidrometra (2,3%); hiperplasia endometrial cística, abscesso e piometra (1,4% cada); adenomiose, petéquias na serosa do útero e aplasia segmentar (1% cada); dois úteros gravídicos, em início de gestação, apresentaram piometra (0,9%), porém os fetos não apresentaram alterações; e pólipo uterino (0,5%). Observou-se uma gestação ectópica com maceração fetal (0,5%); a vaginite ocorreu em 0,5%, e melanose endometrial em 8,5%. Destaca-se a elevada incidência de cistos foliculares e endometrite que são doenças que reduzem a eficiência reprodutiva dos rebanhos, provocando infertilidade e perdas econômicas na produção.(AU)


Subject(s)
Animals , Sheep/anatomy & histology , Endometritis/pathology , Genitalia, Female/physiopathology , Genitalia, Female/injuries , Surveys and Questionnaires , Abattoirs
7.
Pesqui. vet. bras ; 40(10): 814-817, Oct. 2020. ilus
Article in English | LILACS, VETINDEX | ID: biblio-1143414

ABSTRACT

Two young opossums were necropsied and diagnosed with rickets. This study aims to describe the clinical-pathological aspects of rickets in Didelphis albiventris. Macroscopically, the opossums presented kyphosis and scoliosis, lateral deviation of the limbs in varus, locomotion difficulty, and enlargement with softening of costochondral junctions (rickety rosary). Samples of bones and joints were processed for hematoxylin and eosin staining and Masson's trichrome. Microscopically, we observed thickening of the epiphyseal plate, characterized by irregular and multifocal proliferation of serialized and hypertrophic cartilage zones, which formed circular groups of large, dysplastic chondrocytes towards the spongy zone, often surrounded by non-mineralized osteoid tissue. In the cortical bone, there were pale eosinophilic zones around the Havers channels consistent with non-mineralized osteoid. The staining of Masson's trichrome evidenced the accumulation of osteoid tissue in cortical and trabecular bones. It is possible that a mixed cause of absorption deficiency of vitamin D3 associated with an unbalanced Ca:P diet based on lactose-free milk and fruits may have triggered the disease.(AU)


Dois gambás jovens foram necropsiados e diagnosticados com raquitismo. O objetivo do trabalho é descrever os aspectos clínico-patológicos de raquitismo em Didelphis albiventris. Macroscopicamente os gambás apresentaram cifose e escoliose, desvio lateral dos membros em varus, dificuldade de locomoção e alargamento com amolecimento das junções costocondrais (rosário raquítico). Amostras dos ossos e articulações foram processadas para coloração de hematoxilina e eosina e Tricrômico de Masson. Microscopicamente havia espessamento da placa epifisária, caracterizada pela proliferação irregular e multifocal das zonas de cartilagem seriada e hipertrófica, que formavam grupos circulares de condrócitos grandes, displásicos em direção a zona esponjosa frequentemente cercados por tecido osteoide não mineralizado. No osso cortical haviam zonas eosinofílicas pálidas ao redor dos canais de Havers consistentes com osteoide não mineralizado. A coloração de Tricrômico de Masson evidenciou o acúmulo de tecido osteoide no nosso cortical e trabecular. Acredita-se que uma causa mista de déficit de absorção de vitamina D3 associada a uma dieta desbalanceada em Ca:P a base de leite sem lactose e frutas tenha desencadeado a doença.(AU)


Subject(s)
Animals , Phosphorus , Rickets/veterinary , Vitamin D Deficiency/veterinary , Calcium , Didelphis
8.
Biosci. j. (Online) ; 36(5): 1742-1749, 01-09-2020. tab, graf
Article in English | LILACS | ID: biblio-1147925

ABSTRACT

We have previously reported that ß-(1→3,1→6)-ᴅ-glucans produced by endophytes Diaporthe sp. G27-60 and G65-65 (GenBank accession codes JF766998 and JF767007, respectively) are promising anti-proliferation agents against human breast carcinoma (MCF-7) and hepatocellular carcinoma (HepG2-C3A) cells. However, the literature fails to describe the effects of Diaporthe exopolysaccharides (EPS) on eukaryotic healthy cells. The fungus Metarhiziumanisopliae has been employed as model-system to evaluate the toxicity of pharmaceutical and agricultural-interest substances, taking into account, among other parameters, the speed of conidia germination. Current study verified the effect of different concentrations of Diaporthe ß-glucans on the germination speed of M. anisopliae. Conidia were incubated with ß-glucans treatments (50, 200 and 400 µg/mL) at 28ºC, sampled during 24 h and analyzed by light microscopy. At the end of a 24-h incubation, the amount of germinated conidia reached ≈99% for controls and ranged between 97.7 and 98.6% for treatments. Bayesian analysis indicated that Diaporthe glucans had no toxicity on M. anisopliaeand the curve of germination occurred as expected for this fungal strain. Considering the validity of filamentous fungi as model-systems, results are important data on the toxicity of endophytic EPS on healthy cells and may be associated with our previous results obtained for these polymers against tumor cells.


Anteriormente, um estudo mostrou que ß-(1→3,1→6)-ᴅ-glucanas produzidas pelos endófitos Diaporthe sp. G27-60 e G65-65 (códigos de acesso no GenBank JF766998 e JF767007, respectivamente) são agentes promissores com ação antiproliferativa contra células HepG2-C3A (hepatoma humano) e MCF-7 (adenocarcinoma mamário humano). No entanto, os efeitos de exopolissacarídeos (EPS) produzidos por fungos do gênero Diaporthe em células eucarióticas sadias não estão descritos na literatura atual. O fungo Metarhiziumanisopliae tem sido utilizado como sistema-modelo para avaliar a toxicidade de substâncias de interesse farmacêutico e agronômico, considerando, entre outros parâmetros, a velocidade de germinação de conídios. O presente estudo teve como objetivo verificar os efeitos de diferentes concentrações de ß-glucanas produzidas por Diaporthe sp. sobre a velocidade de germinação de M. anisopliae. Os conídios foram incubados com os tratamentos de ß-glucanas (50, 200 e 400 µg/mL) a 28 ºC, com amostras coletadas ao longo de 24 h, e analisados por microscopia de luz. Ao final das 24 h de incubação, o total de conídios germinados nos controles foi de ≈99%, e variou entre 97,7 e 98,6% para os tratamentos. A análise bayesiana indicou que as glucanas de Diaporthe sp. não apresentaram toxicidade sobre M. anisopliae, e a curva de germinação atendeu ao esperado para essa linhagem fúngica. Considerando a validade dos fungos filamentosos como sistemas-modelo, esses resultados representam dados importantes sobre a toxicidade dos EPS de endófitos sobre células sadias e podem ser associados aos resultados anteriormente obtidos para esses polímeros em testes contra células tumorais.


Subject(s)
Bayes Theorem , Endophytes , Fungi
9.
Investig. andin ; 22(40)jun. 2020.
Article in Portuguese | LILACS-Express | LILACS | ID: biblio-1550416

ABSTRACT

O teste cardiopulmonar de exercício (TCPE) é utilizado para aplicações clínicas na avaliação da intolerância ao exercício não diagnosticada e na determinação da capacidade funcional. O TCPE é importante na pesquisa clínica em pacientes com apneia obstrutiva do sono (AOS), com a necessidade de mensuração da capacidade funcional e limitações físicas. O objetivo foi identificar o protocolo e ergometro mais utilizado em pacientes com AOS, se o protocolo reflete no nível de capacidade funcional e avaliar o comportamento do consumo de oxigênio de pico (VO2pico). Trata-se de uma revisão sistemática realizada de 2005 a 2017. A busca foi realizada nas bases de dados Pub-Med, LILACS, Medline e PEDro. Dos 25 estudos analisados a amostra total foi de 1124 pacientes. Os estudos que analisaram o VO2pico somaram 583 pacientes. O protocolo de rampa foi o mais utilizado, a escolha deve ser individual, considerando as características e limitações da população estudada.


Cardiopulmonary Exercise Testing (CPET) is used for clinical applications in assessing intolerance to undiagnosed exercise and in determining functional capacity. CPET is important in clinical research in patients with obstructive sleep apnea (OSA), with the need to measure functional capacity and physical limitations. The objective was to identify the protocol and ergometer most used in patients with OSA if the protocol reflects on the functional capacity level and to evaluate the behavior of peak oxygen consumption (VO2peak). It is a systematic review carried out from 2005 to 2017. The search was performed in Pub-Med, LILACS, Medline and PEDro databases. The 25 studies analyzed the total sample was 1124 patients. The studies that analyzed VO2peak totaled 583 patients. The ramp protocol was the most used, the choice must be individual, considering the characteristics and limitations of the study population.

11.
Acta sci., Biol. sci ; 42: e48321, fev. 2020. tab, graf, ilus
Article in English | LILACS, VETINDEX | ID: biblio-1460938

ABSTRACT

Endophytic microorganisms live inside the plants without causing any damage to their hosts. In the agricultural field, these endophytes might be a strategy of biological control for phytopathogens. We aimed to isolate endophytic fungifrom yellowpassion fruit (Passiflora edulis) leaves, evaluating its biocontrol capacity by in vitroantagonism against phytopathogen Colletotrichum sp. CNPU378. We also carried out greenhouse experiments in bean seedlings. A high colonization frequency was obtained (89%), and the molecular identification based on DNA sequencing attested Colletotrichumas the most frequent genus and minor occurrence of Curvulariaendophytes. The endophytes tested showed different types of competitive interactions in in vitro antagonism inhibition rate ranging from 28.8 to 48.8%. There were 10 promising antagonists tested for their antagonist activity of crude extracts of secondary metabolites, in which strain PE-36 (20.8%) stood out among the other strains evaluated. In the greenhouse assay, plants inoculated only with endophyte Colletotrichumsp. PE-36 was symptomless and suggest that the endophyte strengthened the growth promotion in common bean plants, especially in the root length and number of leaves when compared to control plantsand other treatments. Despite many fungiof Colletotrichumgenus being described as causative agents of anthracnose, in this study, the plant sampled was colonized predominantly by Colletotrichumendophytes living in asymptomatic relationship. By the way,we come across a Colletotrichumsp. endophyte able to antagonize a Colletotrichumsp. pathogen


Subject(s)
Bioprospecting , Phylogeny , Passiflora/genetics , Passiflora/microbiology , Colletotrichum , Fungi
12.
Acta biol. colomb ; 24(2): 322-330, May-ago. 2019. tab, graf
Article in English | LILACS-Express | LILACS | ID: biblio-1010860

ABSTRACT

ABSTRACT Endophyte microorganisms have great biotechnological interest, with features applicable to different areas and are potentially useful in agriculture. The current study determines the biotechnological potential of endophytic fungi, isolated from leaves of Sapindus saponaria, to control phytopathogenic fungi and evaluate their enzyme production. Molecular taxonomy was performed by sequencing of the ITS1-5.8S-ITS2 ribosomal DNA region, identifying the genera Phomopsis, Sordariomycetes, Diaporthe, and Colletotrichum. In vitro antagonism against phytopathogens showed better results against Fusarium solani and provided inhibition indices between 41.8 % and 67.5 %. The endophytic strain SS81 (Diaporthe citri) presented the highest antagonism index against the pathogen. Against Glomerella sp. and Moniliophthora perniciosa, inhibition rates ranged between 18.7 % and 57.4 % and between 38.3 % and 64.8 %, respectively. Enzyme assays revealed that strain SS65 (Diaporthe sp.) produced 1.16 UI μmol/min of amylase; strain SS77 (Diaporthe sp.) produced 2.74 UI μmol/min of pectinase, and strain SS08 (Diaporthe sp.) produced 1.51 UI μmol/min of cellulase. Thus, the current study shows evidence the importance of isolated endophytes with phytoprotective properties of plants with medicinal properties as alternatives for biological control and natural sources of products with biotechnological interest.


RESUMEN Los microorganismos endofíticos tienen gran interés biotecnológico, con características aplicables a diferentes áreas y potencialmente útiles en la agricultura. El presente estudio determinó el potencial biotecnológico de los hongos endofíticos, aislados de las hojas de Sapindus saponaria, en el control de hongos fitopatógenos y evaluación de su producción de enzimática. La taxonomía molecular fue realizada por la secuencia de la región ITS1-5.8S-ITS2 del ADN ribosomal, identificando los géneros Phomopsis, Sordariomycetes, Diaporthe y Colletotrichum. El antagonismo in vitro contra fitopatógenos mostró mejores resultados contra Fusarium solani y proporcionó índices de inhibición de entre el 41,8 % y el 67,5 %. El linaje endofítico SS81 (Diaporthe citri) presentó el mayor índice de antagonismo contra los patógenos. Contra Glomerella sp. y Moniliophthora perniciosa, las tasas de inhibición variaron entre el 18,7 % y el 57,4 % y entre el 38,3 % y el 64,8 %, respectivamente. El ensayo enzimático reveló que el linaje SS65 (Diaporthe sp.) produjo 1,16 UI μmol / min de amilasa; el linaje SS77 (Diaporthe sp.) produjo 2,74 UI μmol / min de pectinasa; y el linaje SS08 (Diaporthe sp.) produjo 1,51 UI μmol / min de celulasa. Así, el presente estudio evidencia la importancia de los endófitos aislados con propiedades fitoprotectoras como alternativas para el control biológico y como fuentes naturales de productos con interés biotecnológico.

13.
Braz. j. microbiol ; 49(4): 840-847, Oct.-Dec. 2018. graf
Article in English | LILACS | ID: biblio-974284

ABSTRACT

ABSTRACT Anthracnose is a crop disease usually caused by fungi in the genus Colletotrichum or Gloeosporium. These are considered one of the main pathogens, causing significant economic losses, such as in peppers and guarana. The current forms of control include the use of resistant cultivars, sanitary pruning and fungicides. However, even with the use of some methods of controlling these cultures, the crops are not free of anthracnose. Additionally, excessive application of fungicides increases the resistance of pathogens to agrochemicals and cause harm to human health and the environment. In order to find natural antifungal agents against guarana anthracnose, endophytic fungi were isolated from Amazon guarana. The compounds piliformic acid and cytochalasin D were isolated by chromatographic techniques from two Xylaria spp., guided by assays with Colletotrichum gloeosporioides. The isolated compounds were identified by spectrometric techniques, as NMR and mass spectrometry. This is the first report that piliformic acid and cytochalasin D have antifungal activity against C. gloeosporioides with MIC 2.92 and 2.46 µmol mL-1 respectively. Captan and difenoconazole were included as positive controls (MIC 16.63 and 0.02 µmol mL-1, respectively). Thus, Xylaria species presented a biotechnological potential and production of different active compounds which might be promising against anthracnose disease.


Subject(s)
Plant Diseases/prevention & control , Xylariales/chemistry , Paullinia/microbiology , Endophytes/chemistry , Fungicides, Industrial/pharmacology , Phylogeny , Plant Diseases/microbiology , Mass Spectrometry , Xylariales/isolation & purification , Xylariales/genetics , Xylariales/metabolism , Molecular Structure , Colletotrichum/drug effects , Colletotrichum/physiology , Endophytes/isolation & purification , Endophytes/genetics , Endophytes/metabolism , Fungicides, Industrial/isolation & purification , Fungicides, Industrial/chemistry
14.
Biosci. j. (Online) ; 34(6 Supplement 1): 120-130, nov./dec. 2018.
Article in English | LILACS | ID: biblio-968877

ABSTRACT

The pata-de-vaca (Bauhinia divaricata L.) tree is a species widely distributed in Brazil, it has a high ornamental and economic value. Its leaves are used in renal inflammations, such as diuretic, hypoglycemic, being considered a medicinal plant of popular use. The research was carried out in a greenhouse belonging to the Laboratório de Ecologia Vegetal, at the Centro de Ciências Agrárias (CCA), from Universidade Federal of Paraíba (UFPB). The objective was to evaluate the morphophysiological characteristics of B. divaricata plants at different water regimes. The experimental design was completely randomized with five water treatments 1 (100% control), 2 (80%), 3 (60%), 4 (40%) and 5 (20%) of the container capacity. The height, number of leaves and stem diameter were evaluated weekly. At the end of the experiment the plants had their organs separated and taken to the greenhouse to obtain the dry matter of the leaves, stem, roots and total dry matter, and also, biomass allocation in the leaves, stem and roots. Plant height did not differ statistically between the treatments. The number of leaves, diameter, leaf, stem and root allocation and root and shoot dry matter were higher under water availability (100% of container capacity). For the production of B. divaricata L. seedlings water regime should be 100% and 80% of the container capacity, but the seedlings grow satisfactorily.


A pata-de-vaca (Bauhinia divaricata L.) é uma espécie arbórea, amplamente distribuída no Brasil, de alto valor ornamental e econômico. Suas folhas são utilizadas nas inflamações renais, como diuréticas, hipoglicemiantes, sendo considerada uma planta medicinal de uso popular. A pesquisa foi desenvolvida em casa de vegetação pertencente ao Laboratório de Ecologia Vegetal, Centro de Ciências Agrárias (CCA), Universidade Federal da Paraíba (UFPB). O Objetivo foi avaliar as características morfofisiológicas em plantas de Bauhinia divaricata em diferentes regimes hídricos. O delineamento experimental foi inteiramente casualizado com cinco tratamentos hídrico 100%, 80%, 60%, 40% e 20% da capacidade de pote. Avaliou-se, semanalmente a altura, número de folhas e diâmetro do caule. Ao final do experimento as plantas tiveram seus órgãos separados e levados à estufa para obtenção da matéria seca das folhas, caule, raízes e massa seca total, e ainda, alocação de biomassa nas folhas, caule e raízes. A altura de plantas não diferiu estatisticamente entre os tratamentos, o número de folhas, diâmetro, alocação de folhas, caules e raízes e massas seca da raiz e parte aérea foram maiores sob maior disponibilidade de água (100% da capacidade do recipiente). Para a produção de mudas de B. divaricata L. o regime hídrico deve ser de 100% e 80% da capacidade do recipiente, porém as mudas crescem satisfatoriamente.


Subject(s)
Plants , Water , Biomass , Bauhinia , Fabaceae
15.
Rev. Soc. Bras. Clín. Méd ; 16(1): 13-17, 20180000. Graf
Article in Portuguese | LILACS | ID: biblio-884985

ABSTRACT

OBJETIVO: Analisar o perfil epidemiológico dos pacientes com evolução subaguda e crônica da infecção por Chikungunya, e avaliar suas principais alterações laboratoriais. MÉTODOS: Estudo observacional, realizado por meio da análise de 31 prontuários de pacientes atendidos em um centro de referência de doenças imunoinfecciosas, no Estado do Rio de Janeiro, no período de janeiro a maio de 2016. Foram selecionados prontuários de pacientes com Chikungunya em fase subaguda ou crônica com diagnóstico confirmado por sorologia IgM, de ambos os sexos e de todas as faixas etárias. As seguintes variáveis foram consideradas: sexo, idade, leucócitos, plaquetas, velocidade de hemossedimentação, e aspartato aminotransferases e alanina transaminase (AST/ALT). RESULTADOS: A faixa etária predominante foi de 50 a 69 anos (64,5%). Pertenciam ao sexo feminino 83,9% dos pacientes. Dentre as alterações laboratoriais, destacaram-se elevação da velocidade de hemossedimentação (46,15%), leucopenia (37%), elevação de transaminases (30,8% AST e 23% ALT) e trombocitopenia (11,1%). CONCLUSÃO: Observou-se a importância epidemiológica na determinação de pacientes potencialmente capazes de desenvolver tais sequelas, representada principalmente pela artralgia incapacitante. A identificação desse grupo, caracterizado como pacientes do sexo feminino e de faixa etária entre 50 e 69 anos, pode ser de grande valia para a prevenção da evolução mórbida dessa arbovirose, sabendo que tais pacientes necessitam de cuidados especiais e acompanhamento clínico mais rigoroso.(AU)


OBJECTIVES: To analyze the epidemiological profile of patients with subacute and chronic Chikungunya infection, and to evaluate their main laboratory abnormalities. METHODS: This is an observational study, carried out through the analysis of 31 medical records of patients attended at a Reference Center for Immunopathological Diseases in the state of Rio de Janeiro, from January to May 2016. Patients with Chikungunya were selected in the subacute or chronic phase with diagnosis confirmed by IgM serology; both genders and all age ranges. The following variables were considered: gender, age, leukocytes, platelets, erythrocyte sedimentation rate, and aspartate aminotransferases and alanine transaminase (ASTALT). RESULTS: The predominant age range was 50 to 69 years (64.5%), with 83.9% of the patients being female. Among the laboratory alterations, high erythrocyte sedimentation rate (46.15%), leukopenia (37%), high transaminases (30.8% AST, and 23% ALT), and thrombocytopenia (11.1%) were observed. CONCLUSIONS: The epidemiological importance in the determination of patients potentially capable of developing such sequels, represented mainly by incapacitating arthralgia, was observed. The identification of this group, characterized as female patients, and between 50 and 69 years of age, may be of great value in the prevention of the morbid progression of this arbovirosis, knowing that such patients require special care, and stricter clinical follow-up.(AU)


Subject(s)
Humans , Male , Female , Middle Aged , Aged , Chikungunya Fever/epidemiology , Chikungunya virus/pathogenicity
16.
Braz. j. microbiol ; 49(1): 59-66, Jan.-Mar. 2018. tab, graf
Article in English | LILACS | ID: biblio-889203

ABSTRACT

ABSTRACT Mangroves are ecosystems located in the transition zone between land and sea that serve as a potential source of biotechnological resources. Brazil's extensive coast contains one of the largest mangrove forests in the world (encompassing an area of 25,000 km2 along all the coast). Endophytic bacteria were isolated from the following three plant species: Rhizophora mangle, Laguncularia racemosa and Avicennia nitida. A large number of these isolates, 115 in total, were evaluated for their ability to fix nitrogen and solubilize phosphorous. Bacteria that tested positive for both of these tests were examined further to determine their level of indole acetic acid production. Two strains with high indole acetic acid production were selected for use as inoculants for reforestation trees, and then the growth of the plants was evaluated under field conditions. The bacterium Pseudomonas fluorescens (strain MCR1.10) had a low phosphorus solubilization index, while this index was higher in the other strain used, Enterobacter sp. (strain MCR1.48). We used the reforestation tree Acacia polyphylla. The results indicate that inoculation with the MCR1.48 endophyte increases Acacia polyphylla shoot dry mass, demonstrating that this strain effectively promotes the plant's growth and fitness, which can be used in the seedling production of this tree. Therefore, we successfully screened the biotechnological potential of endophyte isolates from mangrove, with a focus on plant growth promotion, and selected a strain able to provide limited nutrients and hormones for in plant growth.


Subject(s)
Bacteria/isolation & purification , Trees/microbiology , Acacia/microbiology , Endophytes/isolation & purification , Phylogeny , Bacteria/classification , Bacteria/genetics , Bacteria/metabolism , Trees/growth & development , Brazil , Acacia/growth & development , Wetlands , Endophytes/classification , Endophytes/genetics , Endophytes/metabolism , Indoleacetic Acids/metabolism
17.
Rev. Soc. Bras. Clín. Méd ; 15(2): 112-115, 20170000. ilus
Article in Portuguese | LILACS | ID: biblio-875563

ABSTRACT

A toxocaríase humana é uma infecção parasitária de distribuição mundial causada pelos nematelmintos das espécies Toxocara canis e Toxocara cati, presentes no intestino do cão e do gato, respectivamente. Clinicamente, na maioria das vezes, é assintomática, porém pode apresentar-se de duas formas: visceral ou ocular. Visceralmente, gera uma síndrome hipereosinofílica crônica, acompanhada por leucocitose e hepatomegalia, podendo ocorrer algum grau de infiltrado pulmonar e febre. Na toxocaríase ocular, ocorre uveite intermediária ou posterior, podendo haver formação de granuloma, geralmente unilateral. O acometimento misto é raro, o que motivou este relato. Trata-se de paciente de 19 anos, sexo masculino, que apresentou como sintoma inicial perda da acuidade visual em olho esquerdo. Recebeu tratamento, sem melhora, com sulfametoxazol + trimetoprima e corticoide, fazendo farmacodermia. Evoluiu com diarreia, febre, dor abdominal e hepatoesplenomegalia. Descartadas infecções agudas por toxoplasmose, sífilis, vírus da imunodeficiência humana (HIV), citomegalovirose e dengue; apresentou leucocitose com hipereosinofilia. Foi solicitada sorologia para toxocaríase, confirmando esta infecção. Após o tratamento, apresentou completa remissão dos sintomas. O objetivo aqui foi debater os fatores confundidores, diagnósticos diferenciais, necessidade de exames complementares específicos e conduta terapêutica, de acordo com o quadro clínico.(AU)


Human toxocariasis is a worldwide parasitic infection caused by ascarid nematodes species: Toxocara canis and Toxocara cati, that are present in the intestines of dogs and cats, respectively. Although clinically, most human infections are asymptomatic, two syndromes of human toxocariasis are recognized: visceral and ocular. The visceral form is a hypereosinophilic syndrome accompanied by leukocytosis, hepatomegaly, some degree of pulmonary infiltrate and fever. In ocular toxacariasis there is intermediate or posterior uveitis, and there may be granuloma formation, usually unilateral. The simultaneous involvement of the two forms is rare, which is what, motivated this report. It is a 19-year-old male patient who initially presented loss of visual acuity in the left eye. He received treatment, without improvement, with sulfamethoxazole-trimethoprim and corticoid, causing a pharmacodermia. He developed diarrhea, fever, abdominal pain and hepatosplenomegaly. It was discarded acute infections by toxoplasmosis, syphilis, human immunodeficiency virus (HIV), cytomegalovirus and dengue. The patient also manifested leukocytosis with hypereosinophilia. Serological testing for toxacariasis was requested, diagnosing the infection. After treatment, he progressed with full symptoms remission. The aim of this study was to discuss confounding factors, differential diagnoses, the need for specific complementary exams and therapeutic management, according to the clinical aspects.(AU)


Subject(s)
Humans , Male , Young Adult , Toxocara canis/pathogenicity , Toxocariasis , Toxoplasmosis, Ocular/diagnosis , Toxoplasmosis, Ocular/drug therapy , Uveitis/diagnosis , Uveitis/drug therapy
18.
Biosci. j. (Online) ; 33(5): 1134-1143, sept./oct. 2017. tab, ilus
Article in English | LILACS | ID: biblio-966276

ABSTRACT

The Allamanda blanchetii belongs to the Apocynaceae family, being an ornamental species popularly known as allamanda-roxa and is endemic to the Caatinga. The aim of this research was to evaluate the growth, gas exchange, relative water content, and stomatal density of A. blanchetii under water stress conditions. The experimental design was completely randomized with six levels of the maximum water holding capacity (MWHC) (100%, 80%, 60%, 40%, and 20%) with eight replications. Weekly, it was performed the evaluations of plant height and number of leaves. The results for water stress treatment in the A. blanchetii plants show that they develop better in the water levels of 100% and 80% of the MWHC, without presenting significant morphological and physiological changes. In turn, 20% of the MWHC does not allow the survival of the A. blanchetii plants. The water restriction negatively interfered in the gas exchange in the treatment of 60% and 40% of the MWHC. Therefore, it can be concluded that the A. blanchetii plants grow satisfactorily in 100% and 80% of the MWHC, ensuring the growth and survival during the drought period. The water availability to which the plants were submitted does not influence the total chlorophyll and relative water content of leaves. Gas exchanges are adversely affected at levels of water availability below 80% of the MWHC.


Allamanda blanchetii pertence à família Apocynaceae, é uma espécie ornamental, conhecida popularmente como allamanda-roxa, endêmica da Caatinga. O objetivo da pesquisa foi avaliar o crescimento, trocas gasosas, conteúdo relativo de água e densidade estomática de A. blanchetii sob condições de estresse hídrico. O delineamento experimental foi inteiramente casualizado, com seis capacidade máxima de retenção de água tratamentos hídricos (100%, 80%, 60%, 40% e 20%) com oito repetições. Os resultados obtidos sobre o déficit hídrico aplicado, as plantas de A. blanchetii se desenvolvem com níveis de água de 100% e 80% da CMRA, sem apresentar modificações morfológicas e fisiológicas significativas enquanto que com de 20% da CMRA não houve a sobrevivência de plantas. A restrição hídrica interferiu negativamente nas trocas gasosas, nos tratamentos de 60% e 40% CMRA. Portanto pode-se concluir que as plantas de A. blanchetii crescem satisfatória sob 100% e 80% CMRA garantindo a sua sobrevivência e crescimento durante a seca. A clorofila total e o teor relativo de água na folha das plantas não foram influenciados pelos regimes hídricos a que foram submetidas. As trocas gasosas são negativamente afetadas em níveis de disponibilidade hídrica abaixo de 80% da CMRA.


Subject(s)
Plant Transpiration , Apocynaceae/growth & development , Dehydration , Droughts
19.
Acta sci., Biol. sci ; 39(1): 13-20, jan.-mar. 2017. tab, ilus
Article in English | LILACS | ID: biblio-846673

ABSTRACT

Endophytic bacteria isolated from Eichhornia crassipes (Mart) Solms., collected in oil contaminated wastewater of effluent generated by Petrobras refinery in Manaus were investigated to determine their potential for producing biosurfactants. Assay with 2.6-dichlorophenol indophenol (DCPIP) indicator to verify hydrocarbon biodegradation activity; oil emulsification test; drop-collapse method; surface tension and growth curve of biosurfactant production. The M87 Microbacterium sp. strain chosen for this work was identified by the sequencing of the rDNA region and the chemical characterization was performed by FTIR, UFLC/MS and 1H RMN techniques. The selected bacterial isolate provided 3g L-1 of biosurfactant, using diesel oil as sole carbon source, being efficient in biodegrading oil as demonstrated by the DCPIP test. Fractions obtained by column chromatography were efficient in reducing water surface tension around 40 mN m-1, especially fraction 1, which reduced it to 34.17 mN m-1. The different techniques of chemical analysis used for the identification of the biosurfactant isolate indicated that this is probably a long - chain fatty acid lipid type, which may be used in the future as both biosurfactant in decontamination processes of hydrocarbon-polluted areas or as bioemulsifier in countless processes, since it exhibited no toxicity as determined by Alamar Blue assay.


Foram investigadas bactérias endofíticas isoladas de Eichhornia crassipes (Mart.) Solms., coletadas em águas contaminadas com resíduos de petróleo em um afluente da refinaria da Petrobrás/Manaus, para avaliação da produção de biossurfactantes. Para selecionar o micro-organismos à produção e caracterização de biossurfactantes, foram realizados os seguintes testes: a descoloração do indicador 2,6 indofenol (DCPIP), emulsificação do diesel, colapso da gota, tensão superficial e curva de produção. A caracterização química foi realizada por meio das técnicas de FT-IR, UFLC/MS e RMN1H. A bactéria M87 Microbacterium neste estudo, foi identificada pelo sequenciamento da região rDNA e produziu 3g L-1 de biossurfactantes utilizando o diesel como fonte de carbono, mostrando-se eficiente na ação biodegradadora do petróleo, por meio do teste de Indofenol (DCPIP). As frações obtidas, mostraram-se eficazes na redução da tensão superficial da água abaixo de 40 mN m-1, com destaque para a fração 1 que reduziu a tensão superficial para 34,17 mN m-1. Pelas análises química utilizadas, pode-se inferir que, provavelmente, se trata de um ácido graxo de cadeia longa, que pode ser utilizado futuramente tanto como biossurfactante em processos de descontaminação de ambientes impactados por hidrocarbonetos, assim como bioemulsificante em inúmeros processos uma vez que não apresentou toxicidade por meio do teste realizado.


Subject(s)
Biodegradation, Environmental , Eichhornia , Petroleum , Waste Products
20.
Arq. bras. oftalmol ; 79(4): 264-267, July-Aug. 2016. graf
Article in English | LILACS | ID: lil-794574

ABSTRACT

ABSTRACT We report two cases of suspicious asymmetric bow tie and inferior steepening on topographic evaluations with reflection (Placido) and projection (Scheimpflug). Rotating Scheimpflug corneal and anterior segment tomography (Oculus Pentacam HR, Wetzlar, Germany)® was performed in the first case, with a maximal keratometric value (Kmax) of 43.2 D and an overall deviation value from the Belin/Ambrósio Enhanced Ectasia Display (BAD-D) of 1.76, which was observed in the study eye (OD). BAD-D was 6.59 in the fellow eye, which had clinical findings that were consistent with keratoconus stage 2. The second case presented with a Kmax of 45.3 D and BAD-D of 0.76 in OD and 1.01 in OS. This patient had discontinued wearing soft contact lens less than 1 day prior to examination. Corneal tomographic data enabled us to distinguish mild or forme fruste keratoconus from contact lens-induced corneal warpage, and similar findings were observed on curvature maps.


RESUMO O presente estudo tem por objetivo relatar dois casos suspeitos que apresentam bow tie assimétrico e encurvamento inferior nas avaliações topográficas de reflexão (Placido) e projeção (Scheimpflug). A tomografia de córnea e segmento anterior com o sistema Scheimpflug (Oculus Pentacam HR, Wetzlar, Alemanha)® mostrou no primeiro caso, a ceratometria máxima (Kmax) de 43,2 D e o valor D no Belin/Ambrósio Enhanced Ectasia Display (BAD-D) de 1,76 no olho estudado (OD). O olho contralateral apresentava BAD-D de 6,59 e achados clínicos compatíveis com ceratocone (KC) grau 2. O segundo caso apresentava Kmax de 45,3 D e BAD-D de 0,76 em OD e 1,01 em OS. Este paciente havia interrompido o uso de lentes de contato gelatinosas 1 dia antes do exame. A avaliação tomográfica avançada nos permitiu distinguir ceratocone leve ou subclínico de warpage induzido por lentes de contato, enquanto resultados semelhantes foram observados em mapas de curvatura anterior.


Subject(s)
Humans , Male , Female , Adult , Contact Lenses, Hydrophilic/adverse effects , Corneal Topography/methods , Keratoconus/pathology , Keratoconus/diagnostic imaging , Reference Values , Severity of Illness Index , Diagnosis, Differential , Dilatation, Pathologic/etiology , Keratoconus/etiology
SELECTION OF CITATIONS
SEARCH DETAIL