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Comprehensive analysis of HFE gene in hereditary hemochromatosis and in diseases associated with acquired iron overload

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World Journal of Hepatology 2019年第2期11卷 186-198页

作者： Wagner Narciso de Campos Juliana Doblas Massaro Eduardo Luiz Rachid Can?ado Cláudia Emília Vieira Wiezel Aguinaldo Luiz Sim?es Andreza Correa teixeira Fernanda Fernandes de Souza celso teixeira mendes-junior Ana de Lourdes Candolo Martinelli Eduardo Ant?nio Donadi Division of Clinical Immunology Department of MedicineRibeir?o Preto Medical SchoolUniversity of S?o Paulo Department of Gastroenterology Clinical Gastroenterology and Clinical Hepatology of Clinical HospitalUniversity of S?o Paulo School of Medicine Department of Genetics Ribeir?o Preto Medical SchoolUniversity of S?o Paulo Division of Gastroenterology Department of MedicineRibeir?o Preto Medical SchoolUniversity of S?o Paulo Departamento de Química Laboratório de Pesquisas Forenses e Gen?micasFaculdade de FilosofiaCiências e Letras de Ribeir?o PretoUniversidade de S?o Paulo

BACKGROUND Patients with hepatitis C virus(HCV) and hepatocellular carcinoma(HCC) may or not develop iron overload(IO),which is associated with worst prognosis,because can cause serious damage to *** gene controls the iron uptake from gut,particularly in patients with hereditary hemochromatosis(HH).AIM To identify associations between HFE coding region in patients exhibiting hereditary hemochromatosis and in diseases associated with acquired *** We sequenced exons 2 to 5 and boundary introns of HFE gene,evaluating all polymorphic sites in patients presenting hereditary(hemochromatosis) or acquired iron overload HCV and HCC) and in healthy controls,using Sanger *** also determined the ensemble of extended haplotype in healthy control individuals,including several major histocompatibility complex loci,using sequence specific *** reconstruction was performed using the Arlequin and Phase softwares,and linkage disequilibrium(LD) between histocompatibility loci and HFE gene was performed using the Haploview *** The HFE*003 allele was overrepresented(f = 71%) and HFE*001 allele was underrepresented(f = 14%) in HH patients compared to all groups.A strong linkage disequilibrium was observed among the H63 D-G,IVS2(+4)-C and C282 YG gene variants,particularly in HH;however,the mutation IVS2(+4)T>C was not directly associated with HH *** HFE*001/HFE*002 genotype conferred susceptibility to HCC in HCV patients exhibiting IO(P = 0.02,OR =14.14).Although HFE is telomeric to other histocompatibility genes,the H63 DG/IVS2(+4)-C(P ≤ 0.00001/P ≤ 0.0057) combination was in LD with HLA-B*44 allele group in healthy *** LD was observed between HFE alleles and other major histocompatibility *** A differential HFE association was observed for HH and for diseases associated with acquired IO(HCV,HCC).Since HFE is very distant from other histocompatibility loci,only weak associations were observed with these a

关键词： HFE gene Hepatocellular carcinoma Hepatitis C Hemochromatosis hereditary Alleles Haplotypes

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Development of a Ready-to-Use PSMA-11 Kit Formulation and Biological Evaluation of Binding Affinity

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Advances in Molecular Imaging 2024年第2期13卷 7-22页

作者： Maria Renata Valente Brandão Freire Natália Marchesan Bexiga Marco Antonio Stephano João Ezequiel Oliveira Carlos Roberto Jorge Soares Ana Cláudia Camargo Miranda Anna Carolina de Alcântara Barbosa Marycel Figols de Barboza Laura Fernanda Garcia Luiz Felipe S. teixeira Maria Helena Marumo Bellini Natanael Gomes da Silva Luiza Mascarenhas Balieiro Joel mendes Elaine Bortoleti de Araújo Centro de Radiofarmcia Instituto de Pesquisas Energticas e Nucleares (IPEN) Cidade Universitria So Paulo Brasil Departamento de Tecnologia Farmacutica Faculdade de Cincias Farmacuticas (USP) Cidade Universitria So Paulo Brasil Centro de Biotecnologia Instituto de Pesquisas Energticas e Nucleares (IPEN) Cidade Universitria So Paulo Brasil Departamento de Medicina Nuclear do Hospital Israelita Albert Einstein So Paulo/SP Brasil

Introduction: 68Ga-PSMA-11 is considered the gold standard in detection of micro and oligometastases in advanced prostate cancer, being used for therapeutic planning, as well as, potentially, for evaluating response to treatment. The development of ready-to-use lyophilized kit of PSMA-11 adds quality and safety to the routine use of this radiopharmaceutical and represents a pharmacotechnical challenge as it must preserve the integrity and specificity of the ligand. Methods: PSMA-11 kit formulation was proposed, considering radiolabeling parameters and the preservation of the peptide during the lyophilization process, using mannitol as an excipient. Critical temperature characterization studies were carried out using DSC equipment and the freeze-drying process was developed. The direct radiolabeling conditions were evaluated and standardized using 68Ge/68Ga generator eluate from two different manufacturers (ITG and Eckert & Ziegler). The radiochemical purity was evaluated by TLC and HPLC. Biological evaluation was carried out with lyophilized PSMA-11 to demonstrate the integrity of the peptide and preservation of biological activity after the lyophilization process. Results: Based on critical temperature characterization studies, the freeze-drying cycle was designed to reach a freezing temperature of around −40˚C and primary drying at 2˚C. Using 20 mg of mannitol, an intact and elegant lyophilized cake was obtained. PSMA-11 lyophilized kit was directly labeled with 68Ga eluate from 68Ge/68Ga GMP generators (ITG and Eckert & Ziegler) resulting in % RP > 95% at pH 4.0 to 4.5. The results obtained from in vitro and in vivo biological competition studies confirmed the preservation of PSMA-11 affinity for the receptor after lyophilization. Conclusion: A lyophilized formulation (Kit) of PSMA-11 was successfully obtained, which preserved the integrity and biological activity of the peptide and guaranteed radiolabeling efficiency.

关键词： 68Ga-PSMA-11 Prostate-Specific Membrane Antigen (PSMA) Ready-to-Use Kit GMP-Grade Generators Metastatic Prostate Cancer PET Imaging

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Effectiveness of Helicobacter pylori eradication in the treatment of early-stage gastric mucosa-associated lymphoid tissue lymphoma:An up-to-date meta-analysis

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World Journal of Gastroenterology 2023年第14期29卷 2202-2221页

作者： Fabian Fellipe Bueno Lemos Caroline Tianeze de Castro Mariana Santos Calmon Marcel Silva Luz Samuel Luca Rocha Pinheiro Clara Faria Souza mendes dos Santos Gabriel Lima Correa Santos Hanna Santos Marques Henrique Affonso Delgado Kádima Nayara teixeira Cláudio Lima Souza Márcio Vasconcelos Oliveira Fabrício Freire de Melo Instituto Multidisciplinar em Saúde Universidade Federal da BahiaVitória da Conquista 45029094BahiaBrazil Instituto de Saúde Coletiva Universidade Federal da BahiaSalvador 40110040BahiaBrazil Campus Vitória da Conquista Universidade Estadual do Sudoeste da BahiaVitória da Conquista 45029094BahiaBrazil Campus Toledo Universidade Federal do ParanáToledo 85919899ParanáBrazil

BACKGROUND Gastric mucosa-associated lymphoid tissue(MALT)lymphoma(GML)is usually a low-grade B-cell neoplasia strongly associated with Helicobacter pylori(***)-induced chronic *** practice guidelines currently recommend *** eradication as the preferred initial treatment for early-stage *** determine the practical effect of bacterial eradication as the sole initial therapy for early-stage GML,an updated analysis and review of available evidence is *** To perform a meta-analysis to assess the rate of complete remission(CR)of ***-positive early-stage GML following bacterial *** We performed independent,computer-assisted literature searches using the PubMed/MEDLINE,Embase,and Cochrane Central databases through September *** and retrospective observational studies evaluating the CR of early-stage GML following bacterial eradication in ***-positive *** risk of bias was assessed using Joanna Briggs Institute(JBI)Critical Appraisal *** pooled estimate of the complete histopathological remission rate and respective confidence intervals(95%CI)were calculated following the random-effects *** and inconsistency were assessed using Cochran’s Q test and I2 statistic,and heterogeneity was defined as P50%,*** and meta-regression analyses were conducted to explore potential sources of *** The titles and abstracts of 1576 studies were screened;96 articles were retrieved and selected for full-text ***,61 studies were included in the proportional meta-analysis(P-MA).Forty-six were prospective and fifteen were retrospective uncontrolled,single-arm,observational *** overall risk of bias was low to moderate in all but a single report,with an average critical appraisal score across all studies of 79.02%.A total of 2936 ***-positive early-stage GML patients,in whom *** was successfully eradicated,were incl

关键词： Lymphoma B-cell Marginal zone Gastric mucosa-associated lymphoid tissue lymphoma Stomach lymphoma Helicobacter pylori Therapeutics Eradication therapy

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Therapeutic and biological activities of Calotropis procera(Ait.) ***.

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Asian Pacific Journal of Tropical Medicine 2010年第4期3卷 332-336页

作者： Marcia Calheiros Chaves Silva Antonio Batista da Silva Fabiano Moura teixeira Paulo Cesar Pereira de Sousa Regina Maria Macedo Rondon Jose Eduardo Ribeiro Honorio junior Luiz Rafael Leite Sampaio Samanda Lima Oliveira Angela Nadyla Martins Holonda Silvania Maria mendes de Vasconcelos Enfermeira Mestre em Farmacologia/Universidade Federal do Ceara/UFC Farmaceutico Mestre em Patologia Tropical/Universidade Federal do Amazonas/UFAM Biologo Mestre em Bioquimica/Universidade Federal do Ceara/UFC Farmaceutico Mestre em Ciencias Farmaceutica/Universidade Federal do Ceara/UFC Biologa Mestre em Producao Animal/Universidade Estadual do Ceara/UECE Biologo Mestre em Fisiologia da Universidade Estadual do Ceara/UECE Enfermeiro Mestrando em Farmacologia da Universidade Federal do Ceara/UFC Aluna de Farmacia da Universidade Federal do Ceara/UFC Enfermeira Professora Adjunto do Depto.de Fisiologia e Farmacologia da Universidade Federal do Ceara/UFC

Medicinal plants have been used to treat various ailments of the poor population around the world;hence the interest among researchers to know the active ingredients of certain plants has being *** Calotropis procera(***) is a plant original from Africa,commonly found in northeastern *** is well known for their pharmacological properties,since it produces large amounts of *** important role that medicinal plants play in folk medicine has led us to develop this article in order to review the major pharmacological activities of C. procera.

关键词： Calotropis procera Pharmacological activity Medicinal plants

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Multicultural care in nursing—From the theoretical paradigm to the subjective experiences in clinical settings

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Open Journal of Nursing 2013年第8期3卷 557-562页

作者： Ana Paula teixeira de Almeida Monteiro Aida Cruz mendes Nursing School of Coimbra CoimbraPortugal Unidade de Investigacao em Ciencias da Saude-Enfermagem(UICISA-E) CoimbraPortugal

Last decade, the geography of immigration in Portugal experienced intense transformations with an increasing inflow of new and diversified migratory groups. An open questionnaire was developed and applied to 22 Portuguese nurses, aiming to analyse personal experiences and significant situations of nursing care in multicultural contexts. The understanding of hospital routines, difficulties in managing physical space due to different cultural standards, body exposure, and body handling in nursing clinical care, emerged as more significant issues in reports of critical incidents focusing on multicultural contexts.

关键词： Multicultural Nursing Mental Health and Culture

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Liver transplant in patients with primary sclerosing cholangitis:A retrospective cohort from Northeastern Brazil

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世界肝病学杂志:英文版(电子版) 2023年第9期15卷 1033-1042页

作者： Louyse teixeira de Souza Freitas Elodie Bomfim Hyppolito Victor Leonardo Barreto Luiz Humberto JataíCastelo Júnior Bianca Carneiro de Melo Jorge Frederico César Tahim de Sousa Brasil Háteras Malthus Barbosa Marzola Clébia Azevedo Lima Raquel mendes Celedonio Gustavo Rêgo Coelho Jose Huygens Parente Garcia Liver Transplant Department Walter Cantídio Teaching HospitalFortaleza 60430270CearáBrazil School of Medicine University of FortalezaFortaleza 60811905CearáBrazil Hospital São José CearáState Health DepartmentFortaleza 60455610CearáBrazil Department of Surgery Federal University of CearáFortaleza 60430140CearáBrazil Surgery Department São Carlos HospitalFortaleza 60130241CearáBrazil

BACKGROUND Primary sclerosing cholangitis(PSC)manifests within a broad ethnic and racial spectrum,reflecting different levels of access to health *** To evaluate the clinical profile,complications and survival rates of patients with PSC undergoing liver transplantation(LTx)at a Brazilian reference *** All patients diagnosed with PSC before or after LTx were *** medical records were reviewed for demographic and clinical variables,including outcomes and *** level of statistical significance was set at P<*** Our cohort represented 1.6%(n=34)of the 2113 patients receiving liver grafts at our service over the past two *** were male(n=19;56%).The average age(40±14 years)was similar for men and women(P=0.347).The mean follow-up time from diagnosis to LTx was 68 *** patients had the classic form of *** women had PSC/autoimmune hepatitis overlap syndrome,and one patient had small-duct *** phosphatase levels at diagnosis and pre-LTx model for end-stage liver *** were significantly higher in *** bowel research(IBD)was investigated by colonoscopy in 26/34(76%)and was present in most cases(18/26;69%).IBD was less common in women than in men(44.4%vs.55.6%)(P=0.692).Cholangiocarcinoma(CCA)was diagnosed in 2/34(5.9%)patients by histopathology of the explant(survival:3 years 6 mo,and 4 years 11 mo).Two patients had complications requiring a second LTx(one after 7 d due to hepatic artery thrombosis and one after 17 d due to primary graft dysfunction).Five patients(14.7%)developed biliary *** overall median post-LTx survival was 66 *** deaths occurred in the first year(infection n=2,primary liver graft dysfunction n=3,unknown cause n=1).The 1-year and 5-year survival rates of this cohort were 82.3%and 70.6%,respectively,matching the mean overall survival rates of LTx patients at our center(87.1%and 69.43%,respectively)(P=0.83).CONCLUSION Survival after 1 and 5 years was simil

关键词： Primary sclerosing cholangitis Epidemiology Liver transplantation Survivor Clinical associations Pathological features

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Antidiabetic effects of galactomannans from Adenanthera pavonina *** streptozotocin-induced diabetic mice

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Asian Pacific Journal of Tropical Medicine 2018年第2期11卷 116-122页

作者： Icaro Gusmao Pinto Vieira Francisca Noelia Pereira mendes Sabrina Cesar da Silva Raquel teixeira Terceiro Paim Bruno Bezerra da Silva Stephen Rathinaraj Benjamin Eridan Orlando Pereira Tramontina Florean Maria Izabel Florindo Guedes Technological Development Park(PADETEC) Federal University of CearaPici Campus60455-970FortalezaCearaBrazil Department of Health and Nutrition State University of CearaAv.Dr.Silas Munguba 1700Itaper campus60714-903ForalezaCearaBrazil

Objective: To evaluate the antidiabetic effect of galactomannans extracted from Adenanthera pavonina's ***(GAP) in streptozotocin(STZ) induced diabetic ***:The preliminary galactomannan yield from Adenanthera pavonina *** and extraction products composition were *** chemical characterization methods like thin layer chromatography, Fourier transform infrared spectroscopy, ~1H and ^(13)C nuclear magnetic resonance, and molecular weight by gel permeation chromatography have been employed to characterize the extracted *** mice were divided in four groups: Normal control, diabetic control, GAP(1% and 2%) treated and standard drug treated *** mice received treatment daily for 30 *** was induced by STZ at a single dose of 120 mg/*** weight, water and food intake, fasting blood glucose, total cholesterol and triglycerides were *** analysis of pancreas and liver were performed to evaluate STZ-induced tissue ***: The isolated and extracted galactomannan from Adenanthera pavonina was confirmed by various chemical characterization *** exhibited a 1.46:1 mannose: galactose ratio, and high molar *** GAP enriched food decreased glycaemia, total cholesterol and *** didn't interfere on food intakes or body weight, although it increased water ***, the relative liver weight indicated toxic galactomannan effects on the histopathological changes of the pancreas in STZ induced ***: It is concluded that GAP is a natural product that contains potent galactomannan and is useful in preventing and treating diabetes.

关键词： Adenanthera pavonina Galactomannans Diabetes Glycaemia Total cholesterol Triacylglycerol

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Relevance of MUC1 mucin variable number of tandem repeats polymorphism in H pylori adhesion to gastric epithelial cells

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World Journal of Gastroenterology 2008年第9期14卷 1411-1414页

作者： Natália R Costa Nuno mendes Nuno T Marcos celso A Reis Thomas Caffrey Michael A Hollingsworth Filipe Santos-Silva Institute of Molecular Pathology and Immunology University of PortoPorto 4200-465Portugal Institute of Molecular Pathology and Immunology University of Porto Porto 4200-465Portugal Medical Faculty University of Porto Porto 4200-465Portugal Eppley Institute for Research in Cancer and Allied Diseases University of Nebraska Medical CenterOmaha 68198-6805United States Institute of Molecular Pathology and Immunology University of PortoPorto 4200-465Portugal

AIM:To evaluate the influence of MUC1 mucin variable number of tandem repeats (VNTR) variability on H pylori adhesion to gastric cells. METHODS: Enzyme linked immunosorbent assay (ELISA)-based adhesion assays were performed to measure the adhesion of different H pylori strains (HP26695 and HPTx30a) to gastric carcinoma cell lines (GP202 and MKN45) and GP202 clones expressing recombinant MUC1 with different VNTR lengths. RESULTS: Evaluation of adhesion results shows that H pylori pathogenic strain HP26695 has a significantly higher (P < 0.05) adhesion to all the cell lines and clones tested, when compared to the non-pathogenic strain HPTx30a. Bacteria showed a significantly higher (P < 0.05) adhesion to the GP202 cell line, when compared to the MKN45 cell line. Furthermore, both strains showed a significantly higher (P < 0.05) adhesion to GP202 clones with larger MUC1 VNTR domains. CONCLUSION: This work shows that MUC1 mucin variability conditions H pylori binding to gastric cells. The extent of bacterial adhesion depends on the size of theMUC1 VNTR domain. The adhesion is further dependent on bacterial pathogenicity and the gastric cell line. MUC1 mucin variability may contribute to determine H pylori colonization of the gastric mucosa.

关键词：幽门杆菌胃上皮细胞多态性胃疾病

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Identification and characterization of resistance and pathogenicity of Enterococcus *** samples of donor breast milk

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World Journal of Clinical Pediatrics 2020年第3期9卷 53-62页

作者： Luana Andrade mendes Santana Nivea Nara Novais Andrade Lucas Santana Coelho da Silva Caline Novais teixeira Oliveira Breno Bittencourt de Brito Fabricio Freire de Melo Claudio Lima Souza Lucas Miranda Marques Marcio Vasconcelos Oliveira Oliveira Instituto Multidisciplinar em Saúde Universidade Federal da BahiaVitória da Conquista 45029-094BahiaBrazil

BACKGROUND Breast milk is the primary source of nutrition for *** babies frequently need nutritional support from Human Milk *** bacterial species of the genus Enterococcus are part of the microbiota of healthy donors,they may contaminate samples of pumped breast *** To identify and characterize the bacterial virulence and resistance in samples isolated from the nipple-areolar region,hands,and breast milk aliquots from donors at the Human Milk Bank of Municipal Hospital EsauMatos in the city of Vitória da Conquista,Bahia State,*** The personal hygiene and sanitation of donors were analyzed with the aim of identifying possible reasons for contamination of pumped *** samples as well as aliquots of unpasteurized and pasteurized milk from 30 participants were *** Enterococcus *** underwent a disk diffusion susceptibility test and molecular biology techniques to determine resistance and virulence *** Enterococcus *** identified in 30%of donors(n=9),and 11 specimens were *** to tetracycline was highly prevalent,being detectable in 63%of the isolates(n=7)and followed by intermediate sensitivity to ciprofloxacin,observed in 27%of the specimens(n=3).The efaA gene was found in 63%(n=7)of the isolates,while the ace gene was detected in 27%(n=3).CONCLUSION This study illustrates the importance of microbiological monitoring by Human Milk Banks and the need for alternatives to prevent the presence of Enterococcus *** hospital settings.

关键词： Enterococcus spp. Breast milk Virulence Human milk Pasteurization Antimicrobial resistanc

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Molecular and serology methods in the diagnosis of COVID-19: An overview

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World Journal of Methodology 2022年第3期12卷 83-91页

作者： Marcel Silva Luz Ronaldo teixeira da Silva Júnior Gabriella Almeida Santos de Santana Gabriela SantosRodrigues Henrique de Lima Crivellaro Mariana Santos Calmon Clara Faria Souza mendes dos Santos LuisGuilherme de Oliveira Silva Qesya Rodrigues Ferreira Guilherme Rabelo Mota Heloísa Heim Filipe AntônioFrança da Silva Breno Bittencourt de Brito Fabrício Freire de Melo Instituto Multidisciplinar em Saúde Universidade Federal da BahiaVitória da Conquista 45002175BahiaBrazil Instituto Multidisciplinar em Saúde Universidade Federal da BahiaVitória da Conquista 45029-094BahiaBrazil

Coronavirus disease-19(COVID-19)has become a pandemic,being a global health concern since December 2019 when the first cases were *** acute respiratory syndrome coronavirus 2,the COVID-19 causal agent,is aβ-coronavirus that has on its surface the spike protein,which helps in its virulence and pathogenicity towards the ***,effective and applicable diagnostic methods to this disease come as an important tool for the management of the *** use of the molecular technique PCR,which allows the detection of the viral RNA through nasopharyngeal swabs,is considered the gold standard test for the diagnosis of ***,serological methods,such as enzyme-linked immunosorbent assays and rapid tests,are able to detect severe acute respiratory syndrome coronavirus 2-specific immunoglobulin A,immunoglobulin M,and immunoglobulin G in positive patients,being important alternative techniques for the diagnostic establishment and epidemiological *** the other hand,reverse transcription loop-mediated isothermal amplification also proved to be a useful diagnostic method for the infection,mainly because it does not require a sophisticated laboratory apparatus and has similar specificity and sensitivity to ***,imaging exams provide findings of typical pneumonia,such as the ground-glass opacity radiological pattern on chest computed tomography scanning,which along with laboratory tests assist in the diagnosis of COVID-19.

关键词： COVID-19 Pandemic Diagnosis Polymerase chain reaction Molecular biology Serology

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