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Computational Analysis of Physicochemical, Pharmacokinetic and Toxicological Properties of Deoxyhypusine synthase Inhibitors with Antimalarial Activity

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Computational Molecular Bioscience 2014年第4期4卷 47-57页

作者： Nayara s.R.silva Luana K.s.Goncalves Jonatas L.Duarte Juliane s.silva César F.santos francinaldo s.braga Raí C.silva Josivan s.Costa Lorane I.s.Hage-Melim Cleydson B.Rdos santos Laboratory of Modeling and Computational Chemistry Federal University of AmapáCampus Universitário Marco ZeroMacapáBrazil Postgraduate Program in Pharmaceutical sciences Federal University of AmapáMacapáBrazil

Malaria is a parasitic disease which has as etiological agents protozoa of the genus Plasmodium prevalent in tropical countries. The appearance of Plasmodium strains resistant to artemisinin has become necessary the development of new drugs using computational tools to combat this epidemic. Diverse transporter proteins can act as antimalarials targets, thereby being the enzyme deoxyhypusine synthase a promising antimalarial target. The present study aimed to investigate 15 most active inhibitors of deoxyhypusine synthase target, deposited in databases Binding DB, in order to trace a pattern of physicochemical, pharmacokinetic and toxicological properties of the inhibitors for this enzyme and propose new inhibitors of deoxyhypusine synthase target. The physicochemical properties were obtained according to the Lipinski parameters to evaluate oral absorption. Based on the certain properties were proposed three new inhibitors (A, B and C). The ADME/Tox properties were calculated for new inhibitors compared with results of the selected compounds. The fifteen inhibitors for oral administration showed satisfactory results, because they have adapted to the Lipinski parameters. In relation to the penetration of the blood-brain barrier the inhibitors analyzed showed penetration values less than 1, and ranged from 0.0411815 to 0.481764, being that the compound 1 showed value of CBrain/CBlood = 0.135467. Compound B showed a higher strength in plasma protein binding in relation to the compound 1, having a variation be-tween them of ±1.489344. Therefore, the compound B would present a longer halflife compared with compound 1. The proposed compounds showed positive and satisfactory results, being able to reach less adverse effects related to the central nervous system depending of administered dose.

关键词： Antimalarial Activity Deoxyhypusine synthase Inhibitors Physicochemical Property Pharmacokinetic and Toxicological Properties

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sleeve Gastrectomy with Duodenal Transit Bipartition (s-DTB): Preliminary Results and Technical Aspects of Its Metabolic structure

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surgical science 2024年第4期15卷 244-264页

作者： Paulo Reis Esselin de Melo Ricardo Zorron Victor Ramos Mussa Dib Carlos Augusto scussel Madalosso Rui Ribeiro Thonya Cruz braga Paula Volpe Carlos Eduardo Domene Paulo Reis Institute Goiania GO Brazil Alfredo Nasser University Center (UNIFAN) Goiania GO Brazil Department of Bariatric and Metabolic surgery CUF Descobertas Hospital Lisbon Portugal Victor Dib Institute Manaus AM Brazil Gastrobese Clinic Passo Fundo RS Brazil Lusiadas Amadora Hospital Lisbon Portugal Clianest Group Renaissance Hospital Goiania GO Brazil Integrated Center for Advanced Medicine (CIMAMED) Sao Paulo Brazil

Obesity is a significant and escalating health issue both in Brazil and globally, with over 650 million overweight adults worldwide. The treatment of obesity can be performed clinically, endoscopically or surgically;surgical treatment proves to be safe and more effective in terms of weight loss and long-term maintenance. Objective: This study aimed to monitor the progress of weight loss and comorbidity control in patients undergoing sleeve gastrectomy with duodenal bipartition. Methods: This pilot project involved 8 patients divided into 2 arms. In the first arm, patients underwent sleeve gastrectomy with Roux-en-Y duodenoileal transit bipartition (s-RYDITB), while in the second arm, patients underwent sleeve gastrectomy with Roux-en-Y duodenojejunal transit bipartition (s-RYDJTB). Both procedures involved Roux-en-Y reconstruction without duodenal exclusion. In s-RYDITB, the duodenal-ileal anastomosis was performed 300 cm from the ileocecal valve (ICV), creating a 250 cm common channel and a 50 cm alimentary channel. In s-RYDJTB, a biliopancreatic loop was created 200 cm from the angle of Treitz, with a 1 m alimentary channel. Results: Five patients underwent the procedures, with one undergoing s-RYDITB and four undergoing s-RYDJTB. No adverse events such as hospitalizations, readmissions, reoperations, fistulas, bleeding, pulmonary embolism, diarrhea, dumping syndrome, or hypoglycemia occurred during the study period. The mean length of hospital stay was 2 days. The average BMI decreased from 37.27 kg/msup>2sup> preoperatively to 29.48 kg/msup>2sup> after 6 months. The significant percentage of weight loss was 21.22%, with excess weight loss of 63.6%. Ninety-five percent remission of comorbidities, including hypercholesterolemia, hypertriglyceridemia, diabetes, hypertension, steatosis, and pre-diabetes. Two patients underwent sleeve gastrectomy with duodenal bipartition using a single anastomosis. Conclusion: Duodenal switch surgery has gained worldwide recog

关键词： Obesity Bariatric surgery Metabolic surgery Duodenal switch

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Microbial Community with Potential for Metal Release Isolated from Palca Mine Tailings Pond in Peru

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Journal of Geoscience and Environment Protection 2024年第7期12卷 109-121页

作者： César Wilber Guzmán Moreno Bruno Karolski solange Kazue Utimura Roberto Castellanos Cabrera Jhon Albert Centeno Torres Daladier Miguel Castillo Cotrina Elisabete de santis.braga Dayana sarai Gamonal Fermandez Denise Crocce Romano Espinosa Joel Barbujiani sigolo Department of sedimentary and Environmental Geology Institute of Geoscience USP So Paulo Brazil Department of Chemical Engineering LAREX USP So Paulo Brazil CEPEMA Environment Training and Research Center USP So Paulo Brazil Facultad de Ciencias Universidad Nacional Jorge Basadre Grohmann UNJBG Tacna Per Department of Physical Chemical and Geological Oceanography USP So Paulo Brazil Facultad de Ciencias Biolgicas Universidad Nacional Pedro Ruiz Gallo UNPRG Lambayeque Per

The improvement of microbial characterization has increased the comprehension of microbial population and their ability in the microbiological metal dissolution. Bioleaching processes have been expanded to use microorganisms for the recovery of metals from ores and wastes. This study introduces Palca mine tailings pond in Peru which turned into acid mine drainage (AMD). AMD is a source of microbial communities whose microorganisms may support the aqueous extractive metallurgy for metal recovery. Four samples of AMD were collected from different locations and the elemental characterization showed concentrations of metals, such as Cu, Zn, Al, Mn, and Fe. The pH of the samples showed variation between 1.9 - 6.8. Twenty-one microorganisms were isolated and selected according the cell morphology. 16s rRNA gene sequences identified five species of which three belong to the bacterial kingdom and two to the Fungi kingdom. Two of the bacterial species were ferrous ion oxidizing bacteria, identified as Acidithiobacillus ferriphilus and Acidithiobacillus ferridurans;and the other one a ferric ion reducing bacteria identified as Acidiphilium acidophilum. The fungi species identified were Rhodotorula sinensis and Exophiala xenobiotica, a filamentous fungus isolated for the first time from an AMD.

关键词： Acidophilic Microorganisms Acid Mine Drainage—AMD Bioleaching Process Metals Recovery Acidithiobacillus

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Distribution of the related weevil species sitophilus oryzae and s. zeamais in Brazil

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Insect science 2013年第6期20卷 763-770页

作者： Alberto s. Correa Luiz Orlando de Oliveira Lucas s. braga Raul Narciso C. Guedes Departamento de Entomologia Universidade Federal de Vicosa Vicosa Brazil Departamento de Bioquimica e Biologia Molecular Universidade Federal de Vicosa Vicosa Brazil

The genus sitophilus （Coleoptera： Curculionidae） encompasses species of great economic importance as stored grain pests worldwide. Among these species, the maize and the rice weevils （sitophilus zeamais and sitophilus oryzae, respectively） are partic- ularly important in warmer climates. These two weevils exhibit closely morphological and ecological resemblance making difficult their proper identification and recognition of their distribution in grain-producing regions. Both species are recorded in south America and particularly in Brazil, but their respective distribution and prevalence were not yet assessed in the region. Therefore, several insect samples throughout Brazil were collected and subjected to morphological identification using male genitalia and also using molec- ular identification with species-specific primers designed for clear recognition of both the species. The primers were designed for the specific amplification of a gene fragment of the cytochrome oxidase subunit I, which exhibited high specificity during our prelimi- nary experiments with insects from six populations of known species （either s. zeamais or s. oryzae）. Both identification strategies provided the same results indicating preva- lence of the maize weevil s. zeamais throughout the country. Two hypotheses may explain such prevalence：（i） the likely host preference ofs. zeamais for maize because this is the most cultivated cereal in Brazil, and （ii） the prevalence ofs. zeamais in tropical regions as compared with s. oryzae, which is more disseminated in subtropical and temperate regions.

关键词： cytochrome oxidase subunit I distribution maize weevil rice weevil south America

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Performance Parameters:Demobilization Antibiotic Resistant Bacteria(ARB)and Carrying Genes(ARG)in Wastewater Disinfection

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Journal of Environmental science and Engineering(B) 2024年第1期13卷 1-8页

作者： solange Kazue Utimura Denise Crocce Romano Espinosa Marcio Luís Busi da silva Elisabete de santis.braga Pedro Jose Alvarez Department of Chemical Engineering USPR.do LagoSão Paulo 25005508-080Brazil Department of Physical Chemical and Geological OceanographyUSPPraça do Oceanográfico 191SPBrazil Department of Civil and Environmental Engineering Rice University6100 Main St.HoustonTexas 77005USA

The UV irradiation is used for removing Antibiotic Resistant Bacteria(ARB)and Antibiotic Resistance Genes(ARG)from wastewater *** are viruses that infect within bacteria,are recognized for bacterial *** influence of some parameters in quantification and performance influencing of pathogen demobilization could be considered in disinfection of *** comparison of Polyvalent phage(NE1)versus Coliphage(NE4)in suppressing a bacterium Escherichia coli(NDM-1:b-lactam-resistant)with UV irradiation was observed the efficacy in reduction of cells in the disinfection and parameter *** results with the effect of UV-C irradiation on NDM-1 infected with 1%of NE4 showed a decrease of cells from 8×10^(6)to 2×10^(5)in 60 min with UV-C *** NDM1(***)was infected with 1%of NE4(Polyvalent Phage)under magnetic stirring for 1 h,the cells count was 8×10^(6).After 1 h in UV-C e×posure,the cells number reached 3×10^(5).The NDM1 that was e×posed in 1 h of UV-C irradiation and then was infected with 1%of *** counting were done 24 h after this *** cells were e×posed in UV-C and showed a reduction in the number of cells from 1×10^(8)to 4×10^(5)after 60 *** results indicate that bacteriophages can mitigate bacteria species,and combined the conventional water disinfection technologies that can support the microbial safety control strategies.

关键词： Antibiotic Resistant Bacteria(ARB) Antibiotic Resistance Genes(ARG) wastewater treatment disinfection Escherichia coli(E.coli).

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Brazilian traditional medicine:Historical basis,features and potentialities for pharmaceutical development

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Journal of Traditional Chinese Medical sciences 2021年第S1期8卷 44-50页

作者： Fernão Castro braga Faculty of Pharmacy Federal University of Minas GeraisAv.Ant(o)nio Carlos 6627campus PampulhaBelo Horizonte30.140-170Brazil

This article gives a brief overview on the Brazilian traditional medicine,starting from its historical development based on the cultural mixing of indigenous populations,European colonizers,and African *** the sequence,it analyzes some features that contributed to the gradual loss of interest on medicinal plants in Brazil,a process started in the 1950s,and recent initiatives undertaken to valuate the Brazilian traditional ***,it highlights some drugs developed from or based on con-stituents of the Brazilian biodiversity and traditional knowledge,which are globally employed,and the perspectives for new drugs *** also discusses the sanitary requirements currently adopted in Brazil for the development and registration of medicinal products based on the Brazilian biodiversity and associated traditional knowledge,as well as the impact of new *** addition,it is presented a discussion on the regulatory framework to access to genetic heritage and associated traditional knowledge in Brazil,along with its impact on the development of pharmaceutical ***,some attempts are made to indicate the possible causes that limit the development of products based on the genetic heritage of Brazilian plants and associated traditional knowledge.

关键词： features globally starting

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Tree structure and diversity of lowland Atlantic forest fragments：comparison of disturbed and undisturbed remnants

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Journal of Forestry Research 2016年第3期27卷 605-609页

作者： Fabricio Alvim Carvalho Joao Marcelo Alvarenga braga Marcelo Trindade Nascimento Departamento de Botanica Universidade Federal de Juiz de Fora. Campus Universitario s/n Sao PedroJuiz de Fora-MG 36036-900 Brazil Instituto de Pesquisas do Jardim Botanico do Rio de Janeiro. Rio de Janeiro-RJ Brazil Laboratorio de Ciencias Ambientais CBB Universidade Estadual do Norte Fluminense Campos dos Goytacazes-RJ 28013-602 Brazil

This study describes the tree community structure of three moist lowland Atlantic Forest fragments in Rio de Janeiro state, southeastern Brazil. Two fragments were disturbed and an undisturbed one was used as reference. Our hypothesis was that disturbed fragments show distinct structural patterns in comparison with undisturbed stands due to past disturbance practices and forest fragmentation. Four 100 ×5 m sampling plots were demarcated in each fragment and all live and dead trees with DBH C 5 cm were located, measured and identified. The results supported our hypothesis, due to the high values found for standing dead trees, an increase of dominance of a few pioneer species, lower values of large trees and species richness in disturbed fragments in comparison with the undisturbed one. The advanced fragmentation process in the southern Brazilian lowland areas and the high species richness in undisturbed areas highlight these forest fragments as priority areas for conservation and management.

关键词： Phytosociology Tree community Forestfragmentation . Hotspot Brazil

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How does zebrafish support new strategies for neuroprotection and neuroregeneration in hypoxia-related diseases?

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Neural Regeneration Research 2016年第7期11卷 1069-1070页

作者： Emerson s.silva Joao Batista T.Rocha Diogo O.souza Marcos M.braga Programa de Pos-Graduacao em Bioquimica Departamento de Bioquimica Instituto de ciencias basicas da saude Universidade Federal do Rio Grande do Sul Porto Alegre RS Brazil Programa de Pos-Graduacao em Bioquimica Toxicologica Departamento de Bioquimica e Biologia Molecular Centro de ciencias Naturais e Exatas Universidade Federal de Santa Maria Santa MariaRS Brazil Instituto Nacional de Ciencia e Tecnologia em Excitotoxicidade e Neuroprotecao Universidade Federal do Rio Grande do Sul PortoAlegre RS Brazil

Hypoxia is a condition found commonly in several disorders,such as ischemia,asthma,anemia and neonatal *** subjected suddenly to high altitude or extreme exercise are also challenged to low oxygen（O2）*** the brain p... 详细信息

关键词： How does zebrafish support new strategies for neuroprotection and neuroregeneration in hypoxia-related diseases

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Extended criteria brain-dead organ donors:Prevalence and impact on the utilisation of livers for transplantation in Brazil

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World Journal of Hepatology 2023年第2期15卷 255-264页

作者： Victoria s.braga Amanda P C s Boteon Heloisa B Paglione Rafael A A Pecora Yuri L Boteon Faculdade Israelita de Ciências da saúde Albert Einstein Hospital Israelita Albert EinsteinSão Paulo 05652-900Brazil Transplant Centre Hospital Israelita Albert EinsteinSão Paulo 05652-900Brazil

BACKGROUND Despite its association with higher postoperative morbidity and mortality,the use of extended criteria donor(ECD)livers for transplantation has increased globally due to the high demand for the *** To investigate the prevalence of ECD in donation after brain death(DBD)and its impact on organ acceptance for *** Retrospective analysis of DBD organ offers for liver transplantation between 2017 and 2020 in a high-volume transplant *** incidence of the Eurotransplant risk factors to define an ECD(ET-ECD)among DBD donors and the likelihood of organ acceptance over the years were *** relationship between organ refusal for transplantation,the occurrence,and the number of ET-ECD was assessed by simple and multiple logistic regression *** A total of 1619 organ donors were *** these,78.31%(n=1268)had at least one ET-ECD *** was an increase in the acceptance of ECD DBD organs for transplantation(1 criterion:from 23.40%to 31.60%;2 criteria:from 13.10%to 27.70%;3 criteria:From 6.30%to 13.60%).For each addition of one ETECD variable,the estimated chance of organ refusal was 64.4%higher(OR 1.644,95%CI 1.469-1.839,Pserum sodium>165 mmol/L(P=0.310),all ET-ECD criteria increased the estimated chance of organ refusal for *** A high prevalence of ECD DBD was *** the increase in their utilisation,the presence and the number of extended donor criteria were associated with an increased likelihood of their refusal for transplantation.

关键词： Liver transplantation Extended criteria donors Donation after brain death Organ donation

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Use of omental patch and endoscopic closure technique as an alternative to surgery after endoscopic full thickness resection of gastric intestinal stromal tumors: A series of cases

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World Journal of Clinical Cases 2020年第1期8卷 120-125页

作者： Amit H sachdev shahzad Iqbal Igor braga Ribeiro Diogo Turiani Hourneaux de Moura Division of Gastroenterology Hepatology and EndoscopyBrigham and Women’s HospitalHarvard Medical SchoolBostonMA 02115United States Good samaritan Hospital NY 11795United States Gastrointestinal Endoscopy Unit Hospital das Clínicas da Faculdade de Medicina da Universidade de São PauloSão Paulo 05403-000Brazil

BACKGROUND Gastrointestinal stromal tumors(GIsTs)originate from interstitial cells of *** can occur anywhere along the gastrointestinal *** lesions have traditionally been removed ***,with recent innovations in advanced endoscopy,GIsTs located within the stomach are now removed *** describe a new innovative endoscopic technique to close large and hard to access defects after endoscopic full-thickness resection of gastric *** sUMMARY We present a series of three patients who were diagnosed with a gastric *** patients underwent full-thickness endoscopic *** all cases,for closure of the surgical bed,conventional endoscopic techniques including hemoclips,endoloop and suturing were *** performed a new technique in which we pulled omental fat into the gastric lumen and completely closed the defect using endoscopic *** patients performed well post-procedure and computed tomography was carried out one day after the procedures which showed no extravasation of *** The omental plug technique may be used as an alternative to surgery in selected cases of gastric perforation.

关键词： Gastric perforation Gastrointestinal stromal tumors Gastric tumor surgery Endoscopy suturing

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