检索结果-南通市图书馆

Journal of Life Sciences 2013年第3期7卷 276-281页

作者： Ana Carolina Pessoa Moreira egberto santos carmo Paulo Alves Wanderley Evandro Leite de Souza Edeltrudes de Oliveira Lima Department of Pharmaceutical Sciences Federal University of Paraiba Joao Pessoa 58051-900 Brazil Academic Unit of Health Federal University of Campina Grande Cuitd 58175-000 Brazil Department of Agriculture Federal University of Paraiba Bananeiras 58220-000 Brazil Laboratory of Food Microbiology Department of Nutrition Federal University of Paraiba Joao Pessoa 58051-900 Brazil

H. suaveolens （L.） Poit has been used in folk medicine revealing a wide pharmacological potential. This study aimed to evaluate the efficacy of the essential oil from 11. suaveolens leaves in inhibiting the growth of A. flavus LM257 and synthesis of aflatoxins Bl and B2. The essential oil at 20, 40 and 80 laL/mL strongly reduced the biomass and spore germination ofA. flavus. A 100% inhibition was found at 40 μL/mL and 80μL/mL, while at 20 μL/mL the growth depressed over 50% for both tested parameters. The essential oil at all assayed concentrations totally inhibited the production of aflatoxin B1 and B2. From these results, the essential oil from 11. suaveolens leaves may be considered as an alternative and effective inhibitor ofA. flavus, in addition to offer some protective effect to the production of aflatoxins.

关键词： Hyptis suaveolens essential oil Aspergillusflavus mycotoxins inhibitory effect.

Species richness and similarity of the flora on four lajedos in Boa Nova, Bahia, Brazil

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Mountain Science 2023年第6期20卷 1526-1539页

作者： Morgana Maria DO carmo BARBOSA Anderson FERREIRA PINTO MACHADO Andrea Karla ALMEIDA DOS santos Raymundo JoséDE Sá-NETO Michele MARTINS CORRêA Graduate Program in Environmental Sciences State University of Southwest BahiaUniversity Campus“Juvino Oliveira”BR 415km 0445700-000ItapetingaBahiaBrazil Secretary of Education of the State of Bahia Military Police College Eraldo TinocoBrasilia Avenue273Kadija45650-120Vitoria da ConquistaBahiaBrazil Mongoyós Herbarium Multidisciplinary Institute in HealthCampus Anísio TeixeiraFederal University of BahiaRua Hormindo Barros58Bairro Candeias45029-094Vitoria da ConquistaBahiaBrazil Department of Natural Sciences State University of Southwest BahiaEstrada do Bem Querers/nBairro Candeias45083-900Vitoria da ConquistaBahiaBrazil

The municipality of Boa Nova,in northeastern Brazil,is in an ecotone zone between the Caatinga and Atlantic Forest phytogeographic *** transition phytophysiognomy is seasonal forest and known locally as mata de cipó.In these phytophysiognomies there are lajedos,which are rock outcrops colonized by vegetation welladapted to extreme microclimatic variation and vegetation diversity is affected by the vegetation types of the surrounding *** to the singularity of these environments and the relevance of floristic studies for conservation,this work aimed to identify the species richness and compare the similarity of the flora on four rock outcrops in Boa *** flora was surveyed during exploratory walks along lajedos between 2016 and *** total,162 species were identified on the Boa Nova *** flora has a composition and structure similar to semiarid outcrops,as well as endemic species that also occur in surrounding *** the proximity,a similarity index revealed there is floristic dissimilarity between the *** new occurrences were recorded for the region,five species are threatened with extinction(Aosa gilgiana,Ficus cyclophylla,Hippeastrum stigmovittatum,Pleroma caatingae and Trixis pruskii),and 43 species are common in anthropogenic *** reinforces the importance of actions to conserve these areas.

关键词： Ecotone Flora Inselberg Rock outcrops Semiarid Similarity

Toxic Cyanobacteria in Four Brazilian Water Supply Reservoirs

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Protection 2012年第1期3卷 68-73页

作者： Viviane Piccin-santos Maria do carmo Bittencourt-Oliveira 不详

Cyanobacterial blooms have become a worldwide concern due to the production of toxins harmful to humans and animals. In Brazil and worldwide, microcystins are the most frequently found cyanotoxin in water bodies. Four important reservoirs in Brazil’s Southeast and Northeast regions were sampled to identify the cyanobacteria community and the occurrence of potential toxin-producing species in the country’s public supply reservoirs. A total of 14 taxa were identi-fied, 11 of which are known as potential toxin producers. Potentially toxic cyanobacteria were recorded at concentra-tions above 20,000 ***-1 in all samples from all four reservoirs, thus requiring microcystin monitoring in drinking water according to Brazilian legislation. Although the sample from Mundaú reservoir showed the highest concentration of microcystins in water, it had one of the lowest values of ***-1, which demonstrates the non-correspondence between these two parameters. This calls into question the existence of a minimum level of potentially toxic cyanobacteria cells to merit the monitoring of microcystins in the treated water from these sources.

关键词： Cyanotoxins Cylindrospermopsis Microcystins Microcystis Public Water Supply

Methane production and small intestinal bacterial overgrowth in children living in a slum

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2012年第41期18卷 5932-5939页

作者： Carolina santos Mello Soraia Tahan Lígia Cristina FL Melli Mirian Silva do carmo Rodrigues Ricardo Martin Pereira de Mello Isabel Cristina Affonso Scaletsky Mauro Batista de Morais Pediatric Gastroenterology Division Federal University of Sao Paulo04039-031 Sao PauloBrazil Center Foundation Institute of Education for Osasco 06020-190 Sao PauloBrazil Infectology Division Federal University of Sao Paulo04025-010 Sao PauloBrazil Microbiology Immunology and Parasitology DivisionFederal University of Sao Paulo 04023-062 Sao PauloBrazil

AIM:To analyze small intestinal bacterial overgrowth in school-aged children and the relationship between hydrogen and methane production in breath ***:This transversal study included 85 children residing in a slum and 43 children from a private school,all aged between 6 and 10 years,in Osasco,*** characterization of the groups,data regarding the socioeconomic status and basic housing sanitary conditions were *** data was obtained in children from both *** children completed the hydrogen(H 2) and methane(CH 4) breath test in order to assess small intestinal bacterial overgrowth(SIBO).SIBO was diagnosed when there was an increase in H 2 ≥ 20 ppm or CH 4 ≥ 10 ppm with regard to the fasting value until 60 min after lactulose ***:Children from the slum group had worse living conditions and lower nutritional indices than children from the private *** was found in 30.9%(26/84) of the children from the slum group and in 2.4%(1/41) from the private school group(P = 0.0007).Greater hydrogen production in the small intestine was observed in children from the slum group when compared to children from the private school(P = 0.007).A higher concentration of hydrogen in the small intestine(P < 0.001) and in the colon(P < 0.001) was observed among the children from the slum group with SIBO when compared to children from the slum group without *** production was observed in 63.1%(53/84) of the children from the slum group and in 19.5%(8/41) of the children from the private school group(P < 0.0001).Methane production was observed in 38/58(65.5%) of the children without SIBO and in 15/26(57.7%) of the children with SIBO from the *** production of hydrogen was lower in methaneproducing children(P = 0.017).CONCLUSION:Children who live in inadequate environmental conditions are at risk of bacterial overgrowth and methane *** is a substrate for methane production in the colon.

关键词： Bacterial overgrowth Breath test Children Colon Hydrogen Methane Small intestine

Fruiting increases total content of flavonoids and antiproliferative effects of Cereus jamacaru D.C. cladodes in sarcoma 180 cells in vitro

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Biomedicine 2019年第2期9卷 66-72页

作者： Jean Carlos Vencioneck Dutra Juda Ben-Hur de Oliveira Vanessa Silva dos santos Paula Roberta Costalonga Pereira Jean Moises Ferreira Maria do carmo Pimentel Batitucci Laboratorio de Genetica Vegetal e Toxicologica Departamento de Ciencias BiologicasUniversidade Federal do Espirito Santo Laboratorio de Biologia Molecular e Expressao Genica Departamento de Ciências BiologicasUniversidade Federal de Alagoas

Objective: To evaluate the influence of fruiting phenological stage on total flavonoid content, antioxidant activity, and antiproliferative effects of Cereus jamacaru(C. jamacaru)(mandacaru) cladodes and fruit. Methods: Fruit and cladodes at vegetative and fruiting stage of C. jamacaru were collected. The fruit was dissected and bark, pulp, and seeds were separated. Vegetative and fruiting cladodes, together with bark, pulp, and seeds were used to obtain five hydroalcoholic extracts. The extracts were investigated for total flavonoid content, using AlCl3 colorimetric method, antioxidant activity by 2,2-diphenyl-1-picrylhydrazyl and 2,2′-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) radical scavenging capacity and Fe^(2+) ion chelating activity, and in vitro antiproliferative effects(sarcoma 180 cells) by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2 H-tetrazolium bromide assay. Results: The extract of C. jamacaru cladodes at the fruiting stage showed higher flavonoid content compared to the other extracts. Seed extracts showed the highest antioxidant activity in 2,2-diphenyl-1-picrylhydrazyl and 2,2′-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) assays, and the extract of cladodes at vegetative stage showed better antioxidant activity in Fe^(2+) ion chelating activity. The extract of fruiting cladodes promoted higher antiproliferative effects compared to the other extracts. Conclusions: These findings suggest that fruiting increases the content of flavonoids and antiproliferative effects of C. jamacaru cladodes. Data reinforce the potential use of C. jamacaru cladodes and fruits as natural antioxidants and potent anticancer agent.

关键词： Mandacaru Flavonoid content DPPH ABTS Fe^(2+) ion chelating activity MTT assay Sarcoma 180 cells

Ethnobotany and Indigenous Traditional Knowledge in Brazil: Contributions to Research in Ecopsychology

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Psychological Research 2021年第1期3卷 49-60页

作者： Maria do carmo Pereira santos Tito Jonas Carvalho e Silva Biologist PhD candidate at the Graduate Program in Environmental SciencesFederal University of TocantinsBrazil PhD in clinical psychology and culture(University of Brasília).German Chancellor Fellow(2019)at the Alexander von Humboldt Foundation/TU Dortmund University Germany

This paper is the result of an investigation of the flora and traditionalknowledge in the conception of Javaé indigenous people from the Txuirivillage located on Bananal Island, Brazil. The objective is to investigatethe plants used by these indigenous people, their diverse uses and tounderstand how traditional knowledge is passed on to new *** is a qualitative, descriptive and interdisciplinary survey, whose datacollection strategies included the application of semi-structured questionnairesand collection of plants for cataloguing according to AngiospermPhylogeny Group or APG III (2009). We identified 26 plant species, usedfor various purposes such as medicinal use, food, construction, craft andcultural, which were deposited in the Herbarium of the Federal Universityof Tocantins. Roots, stem and leaf are the plant parts most used bythe community. The plants mentioned were most frequently found on thebanks of the Javaés River and in the backyard of the residences. Significanttraditional knowledge of these people about the plants are transmittedto new generations, through visual, orality and experimentation. Ethnobotanicalstudies strengthen research in ecopsychology while allowingresearch into the interactions between human populations and plants.

关键词： Plants Ecopsychology Javaépeople Brazil Traditional knowledge

An aqueous extract of Liu Wei Di Huang Wan alters the labeling of blood constituents with Technetium-99m

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2013年第18期58卷 2061-2065页

作者： MATOS Vernica Soares de carmo Fernanda santos do DINIZ Claudia Leite NASCIMENTO Ana Lucia Rosa PEREIRA Márcia Oliveira FERNANDES Joelma Fonseca de Oliveira santos-FILHO Sebastiao David MORENO Silvana Ramos Farias BERNARDO-FILHO Mario Departamento de Biofísica e Biometria Instituto de Biologia Roberto Alcantara GomesUniversidade do Estado do Rio de Janeiro

The Liu Wei Di Huang Wan is a formula of a traditional Chinese medicine that is used to treat asthma patients and has been shown to have several important properties,such as antioxidant and free radical scavenging *** influence of an extract of Liu Wei Di Huang Wan on the labeling of blood constituents with technetium-99m was *** blood(Wistar rats) was incubated with the extract,stannous chloride and technetium-99m,as sodium *** were centrifuged and aliquots of plasma and blood cells were separated and precipitated with trichloroacetic acid,to obtain soluble and insoluble fractions of the blood *** percentage of radioactivity(%ATI) in all the fractions was *** analysis of the results shows that the extract at the highest concentration used(70 mg/mL) decreased significantly(P<0.05) the %ATI(from 96.48 ± 1.19 to 54.46 ± 7.38) on blood cells compartment,(from 81.11 ± 4.15 to 61.33 ± 4.74) on insoluble fractions of blood cells and(from 65.91 ± 2.44 to 13.15 ± 3.62) on insoluble fractions of *** conclusion,the results suggest that the substances present on this extract can alter this labeling process,probably due to(i) redox properties(antioxidant and chelator activities) and/or(ii) specific actions in the binding sites where the 99mTc would be bound on the blood *** a consequence,precaution is suggested on the interpretation of the nuclear medicine results from performed with blood constituents labeled with 99m Tc in patients that have undertaken LWDHW,although the current findings were obtained in experimental animal models.

关键词：六味地黄丸血液成分标签水提物 Wistar大鼠氧化还原性能锝实验动物模型

New variola(mpox)in Brazil:Epidemiological update and perspectives

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2022年第12期15卷 525-528页

作者： Ana Caroline Edwiges Evangelista Maria Eduarda Queiroz santos Bandeira Larissa Martins de Sena Williana de Paula Marli do carmo Cupertino Andréia Patrícia Gomes Rodrigo Siqueira-Batista School of Medicine Faculdade Dinâmica do Vale do PirangaPonte NovaMinas GeraisBrazil Departament of Medicine and Nursing Universidade Federal de ViçosaViçosaMinas GeraisBrazil

New variola(NV)-mpox(monkeypox)-is a zoonosis caused by the mpox virus,which belongs to the genus Orthopoxvirus in the family *** disease,in the present year(2022),has caused several cases and deaths around the world,including Brazil[1].The group of poxviruses,in which the species that causes NV is included,consists of agents widely distributed in *** to their considerably large size,they were among the first viruses to be microscopically *** Poxviridae family is capable of infecting epithelial and connective tissue ***,such a viral family is classified as a genome lineage composed of doublestranded DNA,completely independent of the host nucleus[1].

关键词： Brazil belongs considerably

Cylindrospermopsin in Water Supply Reservoirs in Brazil Determined by Immunochemical and Molecular Methods

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Water Resource and Protection 2011年第6期3卷 349-355页

作者： Maria do carmo Bittencourt-Oliveira Viviane Piccin-santos Paula Kujbida Ariadne do Nascimento Moura 不详

It is reported for the first time in Brazil and South America the presence of cylindrospermopsin (CYN) in water supply reservoirs. CYN is a powerful hepatotoxic alkaloid implicated in outbreaks of human sicknesses. We detected CYN in different sources of water in Northeastern Brazil using molecular and immunological techniques. The highest concentrations of toxin occurred in the Jucazinho reservoir with the phytoplankton containing the potentially CYN-producing C. raciborskii and Sphaerospermopsis aphanizomenoides (previously known as Aphanizomenon aphanizomenoides). The polyketide synthase (PKS) and peptide synthetase (PS), which are directly related to the ability to produce CYN, were found in all the analyzed samples. The result of the present study emphasizes the need to improve monitoring of CYN in water bodies used for drinking and recreation, in order to avoid exposure of human populations to this toxin.

关键词： Aphanizomenon Cyanobacteria Cylindrospermopsis Raciborskii CYN Sphaerospermopsis Aphanizomenoides Toxin

Maintenance of demographic and hematological profiles in a long-lasting dengue fever outbreak: implications for management

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Infectious Diseases of Poverty 2016年第1期5卷 776-786页

作者： Andréia Moreira dos santos carmo Rodrigo Buzinaro Suzuki Michele Marcondes Riquena André Eterovic árcia Aparecida Sperança Center for Natural and Human Sciences Universidade Federal do ABCCampus São Bernardo do Campo09606-070 São Bernardo Do CampoSão PauloBrasil Secretaria do Estado da Saúde do Estado de São Paulo Instituto Adolfo LutzCentro de Laboratório Regional VIIISanto André09040-160São PauloBrazil Discipline of Parasitology Marilia Medical SchoolMarilia 17519-030São PauloBrazil Center for Natural and Human Sciences Universidade Federal do ABCCampus Santo AndréSanto André09210-170São PauloBrazil

Background:Dengue fever(DF)outbreaks present regionally specific epidemiological and clinical *** certain medium-sized cities(100000–250000 inhabitants)of São Paulo State,Brazil,and after reaching an incidence of 150 cases/100000 inhabitants(“epidemiological threshold”),clinical diagnosis indicated dengue virus(DENV)*** this period,other seasonally infectious diseases with symptoms and physical signs mimicking DF can simultaneously occur,with the consequential overcrowding of health care facilities as the principal *** of clinical diagnosis of DF with serological tests may help in avoiding faulty diagnosis in patients,who might later undergo dengue hemorrhagic fever(DHF)and the dengue-shock syndrome(DSS).Furthermore,demographic and hematological profiles of patients are useful in detecting specific early characteristics associated to DF,DHF and ***:From March to June,2007,456 patients from Marilia in northwest São Paulo State who had only been diagnosed for DF by clinical criteria,underwent serologic testing for non-structural 1(NS1)DENV *** results were used in comparative analysis according to demographic(gender,age)and hematological(leukocyte and platelet counts,percentage of atypical lymphocytes)*** patterns were evaluated by subdividing data according to time of initial attendance,using recorded variables as predictors of DENV infection in logistic regression models and ROC ***:Serologic DENV detection was positive in 70.6%of the *** leukocyte and platelet counts were the most important factors in predicting DENV infection(respective medians DENV+=3715 cells/ml and DENV-=6760 cells/ml,and DENV+=134896 cells/ml and DENV-=223872 cells/ml).Furthermore,all demographic and hematological profiles presented a conservative temporal pattern throughout this long-lasting ***:As consistency throughout the epidemic facilitated defining the conservation

关键词： Clinical diagnosis Demographic profile Dengue fever Dengue-outbreak pattern Epidemiological threshold Hematological profile