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Analysis of the genotoxic potential of low concentrations of Malathion on the Allium cepa cells and rat hepatoma tissue culture

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Journal of Environmental Sciences 2015年第10期27卷 102-111页

作者： Jaqueline Bianchi Mario Sérgio Mantovani maria aparecida Marin-Morales Department of Biology Institute of BiosciencesSao Paulo State University(UNESP) Department of General Biology Biological Science CentreUniv Estadual de Londrina

Based on the concentration of Malathion used in the field, we evaluated the genotoxic potential of low concentrations of this insecticide on meristematic and F1 cells of Allium cepa and on rat hepatoma tissue culture（HTC cells）. In the A. cepa, chromosomal aberrations（CAs）, micronuclei（MN）, and mitotic index（MI） were evaluated by exposing the cells at 1.5,0.75, 0.37, and 0.18 mg/m L of Malathion for 24 and 48 hr of exposure and 48 hr of recovery time. The results showed that all concentrations were genotoxic to A. cepa cells. However,the analysis of the MI has showed non-relevant effects. Chromosomal bridges were the CA more frequently induced, indicating the clastogenic action of Malathion. After the recovery period, the higher concentrations continued to induce genotoxic effects, unlike the observed for the lowest concentrations tested. In HTC cells, the genotoxicity of Malathion was evaluated by the MN test and the comet assay by exposing the cells at 0.09, 0.009, and0.0009 mg/5 m L culture medium, for 24 hr of exposure. In the comet assay, all the concentrations induced genotoxicity in the HTC cells. In the MN test, no significant induction of MN was observed. The genotoxicity induced by the low concentrations of Malathion presented in this work highlights the importance of studying the effects of low concentrations of this pesticide and demonstrates the efficiency of these two test systems for the detection of genetic damage promoted by Malathion.

关键词： HTC Chromosomal aberration Micronuclei Comet assay Pesticide

Microbial lipases:Propitious biocatalysts for the food industry

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Food Bioscience 2022年第1期45卷 34-44页

作者： Cleonice aparecida Salgado Clarissa Isabela aparecida dos Santos maria Cristina Dantas vanetti Department of Microbiology Universidade Federal de Viçosa(UFV)ViçosaMGBrazil

Lipases(triacylglycerol acylhydrolases,EC 3.***.1.3)are one of the largest groups of enzymes and are used in various industrial *** of microbial origin are currently receiving increased attention for industrial application as microorganisms grow quickly and are easily genetically ***,they offer several advantages,such as catalysis of diverse reactions,high specificity,high yields,low energy consumption and reduced processing time and production *** is a relentless ongoing effort to optimise the production of microbial lipases for potential application in the food *** this context,this review highlights the most promising techniques for producing microbial lipases and the recent applications of these lipases in dairy,oils and fats,bakery and confectionery,meat,flavours and aromas and other food *** lipases are normally obtained by fermentation,but the high costs of carbon and nitrogen sources limit the *** overcome this problem,low-cost agro-industrial residues in the lipase production process are *** obtain lipases with high yields and improved characteristics,the technique of protein engineering is described as promising,and the immobilization method that allows the recycling of lipases to improve their catalytic performance is *** to their catalytic properties and versatility,lipases of microbial origin are considered extremely important catalysts in the food industry,meeting the demand for tastier foods with pleasant aromas and ***,microbial lipases are considered safe and sustainable biocatalysts.

关键词： Microbial lipases Food industry Agro-industrial residue

Rare earth metal as a dopant element:Cerium ion as an articulator in hexavalent chromium removal by magnetic iron oxides

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Journal of Rare Earths 2023年第10期41卷 1616-1626,I0006页

作者： Pricila maria Batista Chagas Maísa M.M.Lima Aline aparecida Caetano Lucas Bragança Carvalho Nayra maria de Abreu Piva maria Eduarda Resende Luiz Iara do Rosário Guimarães Laboratory of Environmental Catalysis and New Materials Department of ChemistryFederal University of LavrasCEP 37200-900LavrasMGBrazil Department of Viticulture&Enology University of CaliforniaDavisCA95616USA Institute of Science and Technology São Paulo State University18087-180SorocabaBrazil

This study highlights introducing the rare earth metal cerium(Ce(Ⅳ))into the structure of magnetite(Fe_(3)O_(4))to achieve enhanced adsorptive properties for the removal of chromium(Cr(VI))from an aqueous *** ratios of Ce(Ⅳ)were introduced into the iron oxide matrix,termed FeCe-5,FeCe-10,and *** numerical values correspond to the nominal content of the dopant element added to the synthesis *** solid materials were characterized for morphology and chemical structure,and N_(2)physical adsorption/desorption measurements were *** solid materials doped with Ce(IV)have a high surface area compared to Fe_(3)O_(4),and the solid material with the highest content of the dopant ion(Ce(IV))has a 4-fold greater surface *** increase in the dopant content in the iron oxide structure leads to a total chromium removal of 93.3%.Isotherms studies on the solid materials show that chromium adsorption follows the Langmuir *** adsorption capacity to Fe_(3)O_(4)is 12.59 mg/g and FeCe-10 is 22.49 mg/g at 35℃.By fitting the kinetic and isothermal models,it is found that for the Fe_(3)O_(4)and FeCe-10 materials Cr(VI)removal occurs in very different ways,attributed to the different surface areas and compositions of the oxide,with the formation of the goethite(α-FeOOH)*** FeCe-10reuse process was performed and the removal capacity the Cr(VI)is reduced after the first *** result is attributed to a strong and irreversible adsorption of Cr(VI)on the FeCe-10.

关键词： Bimetallic oxides Fe-Ce interaction Oxygen vacancies Adsorption Cr(Ⅵ) Rare earths

Fruits and Pseudofruits Can Aid in the Quality of Life of Individuals with Chronic or Other Diseases

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Food and Nutrition Sciences 2024年第11期15卷 1170-1199页

作者： maria aparecida Nicoletti University Pharmacy-FARMUSP Faculty of Pharmaceutical Sciences University of So Paulo So Paulo Brazil

The article contains a list of 25 structured technical sheets on fruits and pseudo-fruits that will serve as guidance in improving the quality of health of people, whether with chronic diseases or not. The technical sheets contain data related to the composition, active ingredients, interaction with medication, health conditions in which they may be useful in health care by various health professionals and references used to structure the material referring to each fruit or pseudo-fruit.

关键词： Fruit Composition Interactions Nutrients Health Care

Perivascular epithelioid cell tumor of the liver coexisting with a gastrointestinal stromal tumor

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World Journal of gastroenterology 2008年第5期14卷 800-802页

作者： Carlos Eduardo Paiva Francisco Alves Moraes Neto Abbas Agaimy maria aparecida Custódio Domingues Silvia Regina Rogatto Oncological and Hemato-oncological Center So Paulo State University Botucatu So Paulo 18610-170 Brazil Department of Pathology Amaral Carvalho Hospital Jaú So Paulo Brazil Institute of Pathology Nuremberg Clinic Center Nuremberg Germany Department of Pathology So Paulo State University Botucatu So Paulo 18610-170 Brazil Department of Urology So Paulo State University Botucatu So Paulo 18610-170 Brazil

Approximately 10% of patients with gastrointestinal stromal tumors (GIST) develop other neoplasms, either synchronously or metachronously. In this report we describe coexistence of a gastrointestinal stromal tumor and a hepatic perivascular epithelioid cell tumor (PEComa) in a 51-year-old woman with no evidence of tuberous sclerosis. A subcapsular hepatic nodule (0.8 cm in diameter) was found during surgery for symptomatic gastric neoplasm (15 cm in diameter) arising from the lesser curvature. Both tumors revealed histomorphological and immunohistochemical features confirming a diagnosis of a small incidental hepatic PEComa and a high risky extramural gastric GIST, respectively. The patient remained disease-free 25 mo after surgery with no evidence of tumor recurrence or new neoplasms. To our knowledge, this is the first report of PEComa in a patient with GIST. Hepatic lesions detected synchronously or metachronously in patients with GISTs may represent histogenetically distinct lesions and should be sampled to confirm or exclude metastatic GISTs.

关键词： gastrointestinal stromal tumors PEComa Coexistence Liver Synchronous

MicroRNAs expression influence in ulcerative colitis and Crohn's disease:A pilot study for the identification of diagnostic biomarkers

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World Journal of gastroenterology 2021年第45期27卷 7801-7812页

作者： Ana Elisa valencise Quaglio Felipe Jose Santaella maria aparecida Marchesan Rodrigues Ligia Yukie Sassaki Luiz Claudio Di Stasi Laboratory of Phytomedicines Pharmacology and Biotechnology(PhytoPharmaTec)Department of Biophysics and PharmacologySão Paulo State University(Unesp)Institute of BiosciencesBotucatu 18618-689São PauloBrazil Department of Pathology Botucatu Medical SchoolSao Paulo State University(Unesp)Botucatu 18618-687São PauloBrazil Department of Internal Medicine Botucatu Medical SchoolSão Paulo State University(Unesp)Botucatu 18618-687São PauloBrazil

BACKGROUND Inflammatory bowel disease(IBD)comprises two distinct diseases,Crohn’s disease(CD)and ulcerative colitis(UC),both of which are chronic,relapsing inflammatory disorders of the gastrointestinal tract with a mostly unknown *** incidence and prevalence of IBD are continually increasing,indicating the need for further studies to investigate the genetic determinants of these *** microRNAs(miRNAs)regulate protein translation via complementary binding to mRNA,discovering differentially expressed miRNAs(DE)in UC or CD patients could be important for diagnostic biomarker identification,assisting in the appropriate disease differentiation progressing the understanding of IBD *** To determine the miRNA expression profile in UC and CD patients and the potential pathophysiological contributions of differentially expressed *** A total of 20 formalin-fixed paraffin-embedded colonic samples were collected from the Pathology Department of Botucatu Medical School at São Paulo State University(Unesp).The diagnosis of UC or CD was based on clinical,endoscopic,radiologic,and histological criteria and confirmed by histopathological analysis at the time of *** TaqMan™Array Human MicroRNA A+B Cards Set v3.0(Applied Biosystems™)platform was used to analyze 754 *** of DE-miRNAs were predicted using miRNA Data Integration Portal(mirDIP)and the miRNA Target Interaction database(MiRTarBase).All statistical analyses were conducted using GraphPad Prism *** and nonparametric data were analyzed using t-tests and Mann-Whitney U tests,*** The results showed that of the 754 miRNAs that were initially evaluated,643 miRNAs were found to be expressed in at least five of the patients who were diagnosed with either CD or UC;the remaining 111 miRNAs were not considered to be expressed in these *** expression levels of 28 miRNAs were significantly different between the CD and UC patients(P≤0.05

关键词： Crohn’s disease Ulcerative colitis Inflammatory bowel disease miRNA Differential diagnosis Biomarker

Litterfall dynamics and soil carbon and nitrogen stocks in the Brazilian palm swamp ecosystems

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Forest Ecosystems 2020年第3期7卷 499-510页

作者： Gracielle de Brito Sales Taynan Aquilles Marinho Lessa Daniela aparecida Freitas maria das Dores Magalhães Veloso maria Ligia de Souza Silva Luiz Arnaldo Fernandes Leidivan Almeida Frazão Instituto de Ciências Agrárias Universidade Federal de Minas GeraisAvenida Universitária1000Montes ClarosMG39404-547Brazil Universidade Estadual de Montes Claros Avenida Professor Rui Braga S/NMontes ClarosMG39401-089Brazil Universidade Federal de Lavras Campus UniversitárioCP 3037LavrasMG37299-000Brazil

Background: This study aimed to determine the litterfall production, accumulation, decomposition rate and nutrient stocks, and to estimate the soil carbon(C) and nitrogen(N) stocks in three palm swamp ecosystems with different land use intensities in the Southeast of ***: Three palm swamp ecosystems with different land use intensities were evaluated: Agua Doce(AD),conserved area;Capivara(CV), area with small agricultural practices;and Buriti Grosso(BG), area with an intensive land use. Produced and accumulated litterfall from the Cerrado areas surrounding the palm swamps were collected from October 2014 to September 2015, and the Ca, Mg, K, and P concentrations were determined in the dry and rainy seasons. Soil samples were collected in the surrounding Cerrado and within the palm swamps until 100 cm soil depth to determine bulk density and soil C and N contents and ***: Annual litterfall production in the Cerrado surrounding palm swamps was similar in AD(3.58 Mg·ha^-1·year^-1) and CV(3.79 Mg·ha^-1·year^-1), and was lower in BG(2.84 Mg·ha^-1·year^-1), and was more intense during the dry season. Furthermore, litterfall accumulation was higher in CV(7.12 Mg·ha^-1·year^-1) and BG(6.75 Mg·ha^-1·year^-1), culminating in lower decomposition rates. AD showed the highest decomposition rate(0.60) due to its vegetation structure and conservation. The macronutrient contents from the production and accumulated litterfall had a low influence of the land use, decreasing in the following order: Ca > K > Mg > P. Soils in CV and BG palm swamp areas showed higher values of C and N contents, due to the use of land for agricultural crops and cattle raising in an extensive(rangeland) system. The BG palm swamp, showed the highest C(124.03 Mg·ha^-1) and N(10.54 Mg·ha^-1) stocks due to the land use history with different agricultural practices over ***: The litterfall dynamics in the Cerrado surrounding palm swamps was more affected by climatic variables t

关键词： Nutrient cycling Soil fertility Soil organic matter Decomposition rate

Challenges in the diagnosis of intestinal neuronal dysplasia type B:A look beyond the number of ganglion cells

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World Journal of gastroenterology 2021年第44期27卷 7649-7660页

作者： Simone Antunes Terra Anderson Cesar Gonçalves Pedro Luiz Toledo de Arruda Lourenção maria aparecida Marchesan Rodrigues Department of Pathology Faculty of MedicineSão Paulo State University(UNESP)Botucatu 18618687São PauloBrazil Department of Surgery and Orthopedics Botucatu Medical School-São Paulo State University(UNESP)Botucatu 18618970São PauloBrazil

Intestinal neuronal dysplasia type B(IND-B)is a controversial condition among gastrointestinal neuromuscular *** is its most common clinical manifestation in *** intense scientific research,there are still knowledge gaps regarding the diagnostic criteria for IND-B in the histopathological analysis of rectal *** guidelines published in the past three decades have directed diagnostic criteria for quantifying the number of ganglion cells in the nervous plexus of the enteric nervous ***,it is very complex to distinguish numerically what is pathological from what is normal,mainly because of the difficulty in determining a reliable control group composed of healthy children without intestinal ***,a series of immunohistochemical markers have been proposed to assist in the histopathological analysis of the enteric nervous *** of these markers facilitate the identification of other structures of the enteric nervous system,in addition to ganglion *** structures may be related to the etiopathogenesis of IND-B and represent new possibilities for the histopathological diagnosis of this disease,providing a view beyond the number of ganglion *** review critically discusses the aspects related to the disease definitions and diagnostic criteria of this organic cause of constipation.

关键词： Intestinal neuronal dysplasia type B Constipation Diagnosis gastrointestinal neuromuscular diseases

Comparison of the systemic action of electroacupuncture and laserpuncture in experimental injuries on the back skin of Wistar rats(Rattus novergicus)

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Journal of Traditional Chinese Medicine 2021年第5期41卷 779-788页

作者： Ivens Takechi Nakagawa Hamilton Ricardo Alonso Fabrício Campos Kuroda JoséRoberto Passarini Junior Juan Guzman Quispe Cabanillas Fernanda aparecida Sampaio Mendonça Gláucia maria Tech dos Santos Andrea aparecida de Aro Edson Rosa Pimentel maria Esméria Corezola do Amaral Marcelo Augusto Marretto Esquisatto Graduate Program in Biomedical Sciences University Center of Herminio Ometto Foundation-FHOAvenida Dr.Maximiliano Baruto500-Jardim UniversitarioArarasSao Paulo 13607-339Brazil Department of Structural and Functional Biology Institute of BiologyState University of Campinas-UNICAMPAvenida Bertrand Russels/n.Caixa Postal 6109CampinasSao Paulo 13083-865Brazil

OBJECTIVE:To evaluate the systemic action of electroacupuncture and laserpuncture in the repair of excisional cutaneous injuries on the back of adult female Wistar ***:Ninety animals were divided into three experimental groups:C-control;E-treated with electroacupuncture[acupoints:Feishu(BL13),Geshu(BL17),Zusanli(ST36)];L-treated with laserpuncture(same acupoints)and euthanized on the 7 th,14 th and 21 st days for tissue removal and preparation for histomorphometric and biochemical(dosages,zymography and Western blotting)***:The number of fibroblasts in the E and L groups presented higher values than the C on the14 th and 21 st *** number of granulocytes was lower than C on the 21 st day in groups E and *** total number of newly formed vessels increased on the 21 st day and was higher in both treatments when compared to *** birefringent collagen fibers detected on the 21 st day was lower in groups E and L than group *** glycosaminoglycans and hydroxyproline amount was similar among groups throughout the experimental *** active isoform of matrixmetallo proteinase(MMP)-2 and the latent isoform of MMP-9 did not show any differences among all groups and experimental *** amount of collagenⅠpresented higher values in the L group on the 14 th day and in the E and L groups on the 21 st *** typeⅢcollagen,groups E and L presented values lower than C in all experimental *** amount of transforming growth factor-β1 in the E and L groups showed higher amounts than C on the 7 th day and lower on the 14 th and 21 st *** vascular endothelial growth factor,E and L groups presented similar and lower values than C on the 7 th and 14 th days,respectively,and similar on the 21 st ***:The therapies evaluated in this article stimulated fibroblast proliferation,neoangiogenesis and altered the reorganization of collagen fibers in the repair of excisional injuries in female adult rats.

关键词： wound healing electroacupuncture inflammation morphological and morphometric findings