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Effects of natural mineral-rich water consumption on the expression of sirtuin 1 and angiogenic factors in the erectile tissue of rats with fructose-induced metabolic syndrome

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Asian Journal of Andrology 2014年第4期16卷 631-638页

作者： Cidalia D Pereira Milton Severo Luisa Rafael Maria Joao martins Delminda Neves Department of Biochemistry Faculty of Medicine University of Porto Department of Clinical Epidemiology Predictive Medicine and Public Health Faculty of Medicine University of Porto Department of Clinical Pathology Sao Joao Hospital Centre EPE Department of Experimental Biology Faculty of Medicine and Institute for Molecular and Cell Biology (IBMC) University of Porto Portugal.

Consuming a high-fructose diet induces metabolic syndrome （MS）-Iike features, including endothelial dysfunction. Erectile dysfunction is an early manifestation of endothelial dysfunction and systemic vascular disease. Because mineral deficiency intensifies the deleterious effects of fructose consumption and mineral ingestion is protective against MS, we aimed to characterize the effects of 8weeks of natural mineral-rich water consumption on the structural organization and expression of vascular growth factors and receptors on the corpus cavernosum （CC） in 10% fructose-fed Sprague-Dawley rats （FRUCT）. Differences were not observed in the organization of the CC either on the expression of vascular endothelial growth factor （VEGF） or the components of the angiopoietins/Tie2 system. However, opposing expression patterns were observed for VEGF receptors （an increase and a decrease for VEGFR1 and VEGFR2, respectively） in FRUCT animals, with these patterns being strengthened by mineral-rich water ingestion. Mineral-rich water ingestion （FRUCTMIN） increased the proportion of smooth muscle cells compared with FRUCT rats and induced an upregulatory tendency of sirtuin I expression compared with the control and FRUCT groups. Western blot results were consistent with the dual immunofluorescence evaluation. Plasma oxidized low-density lipoprotein and plasma testosterone levels were similar among the experimental groups, although a tendency for an increase in the former was observed in the FRUCTMIN group. The mineral-rich water-treated rats presented changes similar to those observed in rats treated with MS-protective polyphenol-rich beverages or subjected to energy restriction, which led us to hypothesize that the effects of mineral-rich water consumption may be more vast than those directly observed in this study.

关键词： angiopoietins erectile tissue hypersaline sodium-rich naturally sparkling mineral water receptors sirtuin 1 vascularendothelial growth factor

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Characterization of a Putative Filovirus Vaccine:Virus-Like Particles

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Virologica Sinica 2013年第2期28卷 65-70页

作者： Karen A O martins Travis K Warren Sina Bavari US Army Medical Research Institute of Infectious Diseases

Filoviruses are hemorrhagic fever viruses endemic to parts of Africa and the Philippines. Infection carries with it a mortality rate of up to 90% and currently there are no effective vaccines or therapeutics available to combat infection. However, the filovirus virus-like particles (VLP), which are currently under development, have been shown to be a promising vaccine candidate. They provide protection from infection in the mouse, guinea pig, and nonhuman primate models of infection, eliciting high anti-glycoprotein antibody titers and T cell responses to viral proteins. In this review, we will highlight the development of the filovirus VLP and describe the current understanding of VLP immunogenicity and correlates of protection.

关键词： Filovirus Ebola Marburg Vaccine Virus-like particle Correlates of Protection

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HPV18 Utilizes Two Alternative Branch Sites for E6*I Splicing to Produce E7 Protein

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Virologica Sinica 2019年第2期34卷 211-221页

作者： Ayslan Castro Brant Vladimir Majerciak Miguel Angelo martins Moreira Zhi-Ming Zheng Tumor Virus RNA Biology Section RNA Biology Laboratory Center for Cancer Research National Cancer Institute NIH Frederick MD 21702 USA Genetics Post-Graduation Program Rio de Janeiro Federal University Rio de Janeiro Brazil Genetics Program Nacional Cancer Institute INCA Rio de Janeiro 20231-050 Brazil

Human papillomavirus 18(HPV18) E6 and E7 oncogenes are transcribed as a single bicistronic E6 E7 pre-mRNA. The E6 ORF region in the bicistronic E6 E7 pre-mRNA contains an intron. Splicing of this intron disrupts the E6 ORF integrity and produces a spliced E6*I RNA for efficient E7 translation. Here we report that the E6 intron has two overlapped branch point sequences(BPS) upstream of its 30 splice site, with an identical heptamer AACUAAC, for E6*I splicing. One heptamer has a branch site adenosine(underlined) at nt 384 and the other at nt 388. E6*I splicing efficiency correlates to the expression level of E6 and E7 proteins and depends on the selection of which branch site. In general, E6*I splicing prefers the 30 ss-proximal branch site at nt 388 over the distal branch site at nt 384. Inactivation of the nt 388 branch site was found to activate a cryptic acceptor site at nt 636 for aberrant RNA splicing. Together, these data suggest that HPV18 modulates its production ratio of E6 and E7 proteins by alternative selection of the two mapped branch sites for the E6*I splicing, which could be beneficial in its productive or oncogenic infection according to the host cell environment.

关键词： Human papillomavirus 18 (HPV18) HPV splicing Branch point E6,E7,E6 intron HPV oncogenes

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Preparation and evaluation of colon targeted drug delivery systems for albendazole using kneading,extrusion and compaction technology

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药学学报 2009年第10期44卷 1152-1158页

作者： martins EMEJE Phyllis NWABUNIKE yetunde ISIMI Olobayo KUNLE Sabinus OFOEFULE Department of Pharmaceutical Technology and Raw Materials Development National Institute for Pharmaceutical Research and Development Department of Pharmaceutical Technology and Industrial Pharmacy University of Nigeria

Albendazole is an orally administered broad-spectrum benzimidazole anthelmintic used against helminthiasis,hydatid cyst disease and *** objectives of this investigation are to develop a sustained release drug delivery system for albendazole,and to target its delivery to *** matrix tablets containing varying proportions of single and binary blends of four polymers;polyacrylic acid(carbopol 971),ethylcellulose(Etcell),eudragit L100-55(EUD),and sodium carboxymethyl cellulose(CMC) were prepared by a modified wet granulation technique of kneading,extrusion and *** vitro release profiles of albendazole was sequentially determined in simulated gastric fluid(SGF),simulated intestinal fluid(SIF) without enzymes and in rat caecal content medium(RCCM) at 37 ℃.The in vitro drug release from matrix tablets containing CMC and Etcell as single polymers showed initial burst effect in the first 2 h(>20% and 50% respectively),followed by a slow release in ***,matrix tablets containing polymer blends showed that no appreciable drug release occurred up to 5 *** release from tablets containing polymer blends in the dissolution medium containing rat caecal material suddenly increased to ≥30% after 5 h(RCCM),and reaching up to 90% in 24 *** matrix tablets containing carbopol 971,Etcell,EUD,and CMC as single polymers and as blends were formulated for oral *** release from the tablet matrices containing carbopol alone,binary blends of carbopol/Etcell,and CMC/EUD were found to be very slow and dependent on polymer *** tablets containing blends of these polymers formulated using kneading,extrusion and compaction technique could provide sustained drug release and can be utilized in the colonic delivery of albendazole.

关键词：制剂学药学医学蠕虫病

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Islet amyloid polypeptide & amyloid beta peptide roles in Alzheimer’s disease:two triggers, one disease

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Neural Regeneration Research 2021年第6期16卷 1127-1130页

作者： Sofia Ferreira Ana F.Raimundo Regina Menezes Ivo C.martins iBET-Instituto de Biologia Experimental e Tecnológica OeirasPortugal CEDOC-Chronic Diseases Research Center Faculdade de Ciências MédicasUniversidade Nova de LisboaLisboaPortugal ITQB-NOVA Instituto de Tecnologia Química e Biológica António XavierUniversidade Nova de LisboaOeirasPortugal Instituto de Medicina Molecular Faculdade de MedicinaUniversidade de LisboaLisbonPortugal

Alzheimer’s disease(AD)is a neurodegenerative disorder that affects millions *** to population ageing,the incidence of AD is *** patients develop cognitive decline and dementia,features for which is known,requiring permanent *** poses a major socio-economic burden on healthcare systems as AD patients’relatives and healthcare workers are forced to cope with rising numbers of affected *** recent advances,AD pathological mechanisms are not fully ***,it is clear that the amyloid beta(Aβ)peptide,which forms amyloid plaques in AD patients’brains,plays a key *** 2 diabetes,the most common form of diabetes,affects hundreds of million people *** amyloid polypeptide(IAPP)is a hormone coproduced and secreted with insulin in pancreatic β-cells,with a key role in diabetes,as it helps regulate glucose levels and control adiposity and *** to Aβ,IAPP is very amyloidogenic,generating intracellular amyloid deposits that causeβ-cell dysfunction and *** is now clear that IAPP can also have a pathological role in AD,decreasing cognitive *** harms the blood-brain barrier,directly interacts and co-deposits with Aβ,promoting diabetes-associated *** can cause a metabolic dysfunction in the brain,leading to other diabetes-related forms of ***,here we discuss IAPP association with diabetes,Aβand dementia,in the context of what we designate a“diabetes brain phenotype”AD *** approach helps to set a conceptual framework for future IAPP-based drugs against AD.

关键词： aggregation Alzheimer amylin amyloid diabetes islet amyloid polypeptide

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Towards the automation of book typesetting

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Visual Informatics 2023年第2期7卷 1-12页

作者： Sérgio M.Rebelo Tiago martins Diogo Ferreira Artur Rebelo University of Coimbra Centre for Informatics and Systems of the University of CoimbraDepartment of Informatics EngineeringCoimbraPortugal

This paper proposes a generative approach for the automatic typesetting of books in desktop *** presented system consists in a computer script that operates inside a widely used design software tool and implements a generative process based on several typographic rules,styles and principles which have been identified in the *** performance of the proposed system is tested through an experiment which included the evaluation of its outputs with *** results reveal the ability of the system to consistently create varied book designs from the same input content as well as visually coherent book designs with different contents while complying with fundamental typographic principles.

关键词： Design tools Data-driven design Generative design Graphic design Typography

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Association of SUMO4 Met55Val Variation with Increased Insulin Resistance in Newly Diagnosed Type 2 Diabetes in a Chinese Population

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Journal of Huazhong University of Science and Technology(Medical Sciences) 2011年第3期31卷 306-311页

作者：季振中代喆黄艳 Hedson Alves martins 徐焱成 Department of Endocrinology Zhongnan Hospital of Wuhan University

SUMO4 Met55Val variation was shown to be related to type 2 diabetes susceptibility and the vascular complications in Asian *** further examine the related mechanisms,this study was designed to evaluate the association of SUMO4 Met55Val polymorphism with insulin resistance and β cell function in newly diagnosed type 2 diabetic patients in a Chinese *** hundred and twenty seven newly diagnosed type 2 diabetic patients were selected for SUMO4 Met55Val polymorphism genotype *** subjects underwent a 75-g oral glucose tolerance test（OGTT） to estimate the insulin sensitivity and β cell *** and a metabolic profile were used for phenotyping *** results showed that the SUMO4 Met55Val polymorphism was associated with higher insulin resistance（P0.001） and lower insulin sensitivity（P0.001）.Patients with GG genotype had higher levels of plasma glucose,insulin and C *** sensitivity index（ISI） was closely correlated with body mass index（BMI） in patients with GG genotype in comparison to the counterparts with AG or AA genotype（r=-0.504 vs.r=-0.430 vs.r=-0.340）.Multiple regression linear analysis showed that SUMO4 Met55Val polymorphism was an independent determinant for insulin sensitivity（P=0.001）,which,along with triglyceride,BMI and sex,could account for 20.1% of the variation in *** result remained the same after adjusting for BMI and *** association was found between SUMO4 Met55Val polymorphism and β cell function（all P0.05）.It was concluded that SUMO4 Met55Val variant was associated with increased insulin resistance in Chinese patients with newly diagnosed type 2 diabetes.

关键词： SUMO4 type 2 diabetes insulin resistance

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Inosine: a novel treatment for sciatic nerve injury

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Neural Regeneration Research 2021年第1期16卷 127-128页

作者： Fellipe Soares dos Santos Cardoso Ana Maria Blanco Martinez Fernanda martins de Almeida Laboratório de Neurodegeneração e Reparo–Departamento de Anatomia Patológica–Hospital Universitário Clementino Fraga Filho HUCFF/Universidade Federal do Rio de Janeiro Rio de JaneiroBrazil Instituto de Ciências Biomédicas–ICB/Universidade Federal do Rio de Janeiro Rio de JaneiroBrazil

Trauma to the peripheral nervous system often results in loss of motor and sensory functions of the affected area of the body,leading to a series of functional impairments(Allodi et al.,2012).Injuries to peripheral nerves initiate a series of complex events,known as Wallerian degeneration,which allows the injured axons to regenerate and reinnervate their targets(Allodi et al.,2012).Damage to a nerve induces multiple alterations,which include:axonal degeneration,breakdown of myelin sheath,Schwann cells(SC)proliferation and conversion to a repair phenotype which express cytokines and chemokines that allow the infiltration and activation of macrophages(Mietto et al.,2015;Jessen and Mirsky,2016).

关键词： al. degeneration alterations

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Evaluation of bearing, gears and gearboxes performance with different wind turbine gear oils

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Friction 2015年第4期3卷 275-286页

作者： Ramiro Carneiro martins Carlos M.C.G.FERNANDES Jorge H.O.SEABRA INEGI Universidade do PortoPortoPortugal Faculdade de Engenharia Universidade do PortoPortoPortugal

The oil viscosity specification for wind turbine gear oils is ISO VG 320,although there are quite different viscosity indexes oils for that viscosity *** work evaluates the behaviour of different base oil formulations,since polyalphaolefin(PAO),mineral,ester and polyalkeleneglycol(PAG)that withstand quite different viscosity *** oils evaluation was done in rolling bearing tests and gear *** behaviour was compared for operating conditions in the range observable in a wind turbine *** experimental results showed considerable differences between the different oils and it was observed that depending on the contact type the relative behaviour of the lubricants would change,i.e.,the best lubricant for the rolling bearing would not imply the best result on the gear *** gear geometry is also very important toward the transmission efficiency,once using a low loss gear concept a decrease of up to 25%in torque loss could be *** models were implemented with the purpose of performing a better simulation of the mechanical system and also to obtain the friction coefficient promoted by the tested oils.

关键词： gears rolling bearings friction coefficient lubricants efficiency

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Larvicidal efficacy of plant extracts and isolated compounds from Annonaceae and Piperaceae against Aedes aegypti and Aedes albopictus

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Asian Pacific Journal of Tropical Medicine 2020年第9期13卷 384-396页

作者： Alzeir M.Rodrigues Victor Emanuel P.martins Selene M.Morais Departamento de Ensino Instituto Federal de EducaçãoCiência e Tecnologia do Ceará(IFCE)Rodovia CE 060km 332Vila Martins63.560-000 AcopiaraCearáBrazil Programa de Pós-Graduação em Biotecnologia RENORBIOUniversidade Estadual do CearáAvenida Doutor Silas Munguba170060741-000 FortalezaCearáBrazil Instituto de Ciências Exatas e da Natureza Universidade da Integração Internacional da Lusofonia Afro-Brasileira(Unilab)Campus das AurorasRua JoséFranco de Oliveira s/n62790-970 RedençãoCearáBrasil Departamento de Química Universidade Estadual do CearáAvenida Doutor Silas Munguba170060741-000 FortalezaCearáBrazil

The Aedes(Ae.)aegypti and *** mosquitoes are vectors of epidemiologically relevant arboviruses in the public health context,such as the dengue,Zika and chikungunya *** the alternatives to synthetic insecticides for the control of these vectors,the use of natural plant products deserves *** review summarizes findings on the larvicidal potential of plant extracts on *** and ***,as well as the potential of isolated compounds from plants of the Annonaceae and Piperaceae families against these *** related to larvicidal activity of plant extracts and isolated compounds in Aedes *** the Web of Science database were used,for plant extracts considering publications between 2000 and 2019.A total of 859 articles were analyzed for plant extracts and estimates of lethal concentration values(LC50 and LC90).In the end,95 articles that presented the larvicidal potential of 150 plant species from 52 families were *** two families most studied for this activity were Fabaceae and Asterace *** plant families with the best LC50 values against mosquitoes were Piperaceae and *** activity of 50 acetogenins has already been identified on ***,and 29 of them presented LC50 below 10μg/mL,as well as the larvicidal activity of 8 compounds isolated from ***,plants of these two families are promising for the development of commercial botanical larvicides in the form of extracts and isolated substances,as well as the production via organic synthesis of the most active compounds.

关键词： Larvicidal activity Plant extracts Acetogenins Aedes

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