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Molecular phylogeny of the genus Sticta (lichenized Ascomycota: Lobariaceae) in Colombia

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Fungal Diversity 2014年第1期64卷 205-231页

作者： Bibiana Moncada Robert Lücking alejandra Suárez Licenciatura en Biología Universidad Distrital Francisco Joséde CaldasCra.4 No.26B-54Torre de LaboratoriosHerbarioBogotáColombia Department of Botany The Field Museum1400 South Lake Shore DriveChicagoIL 60605USA

We present a molecular phylogenetic study of the lichen genus Sticta focusing on Colombia,using the ITS fungal barcoding gene for a total of 370 ingroup OTUs,with 322 newly generated *** topology resulting from a maximum likelihood approach does not support current species concepts in Sticta,which use a morphological concept,but in contrast shows that similar morphodemes evolved multiple times independently within the *** a consequence,currently applied names such as *** and *** comprise numerous(up to more than 20)unrelated species-level lineages,which can be distinguished also phenotypically using previously unrecognized characters such as lobe configuration,lobe surface structure,tomentum type,and anatomy of the basal membrane of the *** conclude that the genus Sticta contains about four to five times the number of species currently *** Colombia alone,approximately 150 species of Sticta are present.

关键词： Lichen-forming fungi Morphological species concept Parallel evolution

Crustacean parasites associated with hermit crabs from the western Mediterranean Sea,with first documentation of egg predation by the burrowing barnacle Trypetesa lampas(Cirripedia:Acrothoracica:Trypetesidae)

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Integrative Zoology 2011年第1期6卷 13-27页

作者： Jason D.WILLIAMS alejandra GALLARDO Angela E.MURPHY Department of Biology Hofstra UniversityHempsteadNYUSA

Parasitic isopods(family Bopyridae)and burrowing barnacles(family Trypetesidae)infesting hermit crabs were investigated from shallow subtidal collections made along the southeastern coast of Spain in 2009.A total of 713 specimens of Clibanarius erythropus(Latreille,1818)and 82 Calcinus tubularis(L.,1767)were *** shells and worm tubes inhabited by hermit crabs were collected by hand while snorkeling and were cracked to determine host species,size,sex and presence of *** species of bopyrid isopods were found on ***:the branchial parasite Bopyrissa fraiseii(Carayon,1943)and the abdominal parasite Parathelges cardonae Codreanu and Codreanu in Codreanu,*** all *** examined,Bopyrissa fraiseii was found on 0.6%of hermit crabs and *** was found on 0.3%.A redescription of *** is provided and the species is documented with light and scanning electron microscopy for the first *** Calcinus tubularis harbored parasitic isopods,but one specimen was parasitized by an unidentified rhizocephalan barnacle of the genus Septosaccus(1.2%).The burrowing barnacle Trypetesa lampas(Hancock,1849)was found associated with both hermit crab species and evidence of predation on host eggs by this barnacle is shown for the first *** lampas was found in 4.2%of the shells *** present study expands our knowledge of the parasite fauna of hermit crabs from the Mediterranean Sea and indicates that additional research is needed to determine the impact of trypetesid egg predators on hermit crab populations.

关键词： Bopyridae egg predator Isopoda parasitism Rhizocephala

China-venezuela Relations: the Shift of the Relation with Hugo Chávez Rise to Power

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China-venezuela Relations: the Shift of the Relation with Hu...

作者： alejandra Zerpa（艾丽）外交学院

学位级别：硕士

Today the Sino-Venezuela relation has become a model of countries cooperation,friendship and partnership, as well as a model of strategic complementarity and arelevant relation in the international arena, more specifically in Latin America. Thisdissertation aims at analyzing and explaining Venezuela and China relation through aVenezuelan approach, historically and currently, taking more into details andrelevance the period when President Hugo Rafael Chávez Frías was in power, and hisrole in the building of this strategic relationship. This dissertation is divided into four chapters. The first chapter briefly exploresVenezuela Foreign Policy, and some historical points that help us for a betterunderstanding of the international political actions of the South American country. The second chapter examines Venezuela and China relationship from it establishmentin1974until1999, and then from1999, when Hugo Chávez inaugurated hisgovernment. Also in the analysis of the Sino-Venezuelan relation during HugoChávez’s term, a quantitative resume is provided to evidence the growth of therelation. The third chapter is a continuation of the second part of the previous chapter,and addresses the current relation of China and Venezuela. This current relationship isevidently related with the relation led by President Hugo Chávez, but deserves aseparation as is under the period which starts with the physical disappearance ofChávez in2013: the post Chávez era. This chapter also shows the expectationscoming ahead with the new leader of the Venezuelan Government Nicolás MaduroMoros. The fourth chapter analyzes the participation and role of President Chávez tostrength the relation between two countries. This study has been done in a very important year for the Sino-Venezuelanrelationship, which is about to celebrate its40th anniversary on the28th of June of2014;inside of this frame is expecting to result a valuable contribution for theknowledge of people from both countries regardi

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Effects of six months losartan administration on liver fibrosis in chronic hepatitis C patients: A pilot study

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World Journal of Gastroenterology 2005年第48期11卷 7560-7563页

作者： Silvia Sookoian María alejandra Fernández Gustavo Casta(n|~)o Instituto de Investigaciones Médicas A.Lanari Cathedra of Physiopathology Gastroenterology Section

AIM： TO evaluate the safety and efficacy of chronic administration of Iosartan on hepatic fibrosis in chronic hepatitis C patients.METHODS： Fourteen patients with chronic hepatitis C non-responders （n = 10）, with contraindications （n = 2） or lack of compliance （n = 2） to interferon plus ribavirin therapy and liver fibrosis were enrolled. Liver and renal function test, clinical evaluation, and liver biopsies were performed at baseline and after Iosartan administration at a dose of 50 mg/d during the 6 mo. The control group composed of nine patients with the same inclusion criteria and paired liver biopsies （interval 6-14 mo）. Histological activity index （HAI） with fibrosis stage was assessed under blind conditions by means of Ishak＇s score. Subendothelial fibrosis was evaluated by digital image analyses.RESULTS： The changes in the fibrosis stage were significantly different between Iosartan group （decrease of 0.5±1.3） and controls （increase of 0.89±1.27; P〈0.03）. In the treated patients, a decrease in fibrosis stage was observed in 7/14 patients vs 1/9 control patients （P〈0.04）. A decrease in sub-endothelial fibrosis was observed in the Iosartan group. No differences were found in HAI after Iosartan administration. Acute and chronic decreases in systolic arterial pressures （P〈0.05） were observed after the Iosartan administration, without changes in mean arterial pressure or renal function.CONCLUSION： Chronic AT-Ⅱ type 1 receptor （AT1R） blockade may reduce liver fibrosis in patients with chronic hepatitis C.

关键词： Hepatitis C Liver fibrosis Losartan AT1R Chronic liver disease Angiotensin Ⅱ

Soil organic carbon stocks in native forest of Argentina:a useful surrogate for mitigation and conservation planning under climate variability

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Ecological Processes 2024年第1期13卷 3-24页

作者： Pablo L.Peri Juan Gaitán Matías Mastrangelo Marcelo Nosetto Pablo E.Villagra Ezequiel Balducci Martín Pinazo Roxana P.Eclesia alejandra Von Wallis Sebastián Villarino Francisco Alaggia Marina González Polo Silvina Manrique Pablo A.Meglioli Julián Rodríguez-Souilla Martín Mónaco Jimena E.Chaves Ariel Medina Ignacio Gasparri Eugenio Alvarez Arnesi María Paula Barral Axel von Müller Norberto M.Pahr Josefina Uribe Echevarria Pedro Fernández Marina Morsucci Dardo López Juan Manuel Cellini Leandro Alvarez Ignacio Barberis Hernán Colomb Ludmila La Manna Sebastián Barbaro Cecilia Blundo Ximena Sirimarco Laura Cavallero Gualberto Zalazar Guillermo Martínez Pastur Instituto Nacional de Tecnología Agropecuaria (INTA) Universidad Nacional de la Patagonia Austral (UNPA) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Universidad Nacional de Luján Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Grupo de Estudio de Agroecosistemas y Paisajes Rurales (GEAP) Universidad Nacional de Mar del Plata Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET ) CCT San Luis Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Instituto Argentino de Nivología Glaciología y Ciencias Ambientales (IANIGLA) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Universidad Nacional de Cuyo Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Instituto de Investigaciones en Energía No Convencional CCT Salta-JujuyConsejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Laboratorio de Recursos Agroforestales Centro Austral de Investigaciones Científicas (CADIC) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Dirección Nacional de Bosques Ministerio de Ambiente y Desarrollo Sostenible de la Nación Instituto de Ecología Regional Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET )Universidad Nacional de Tucumán Universidad Nacional de Rosario Instituto de Investigaciones en Ciencias Agrarias de Rosario Centro Científico Tecnológico CONICET Grupo de Estudio de Agroecosistemas y Paisajes Rurales (GEAP) Universidad Nacional de Mar del Plata Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Laboratorio de Investigaciones en Maderas (LIMAD) Universidad Nacional de La Plata (UNLP) Administración de Parques Nacionales (APN) Parque Nacional Los Alerces Centro de Estudios Ambientales Integrados (CEAI) Universidad Nacional de la Patagonia San Juan Bosco (UNPASJB) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET )

Background The nationally determined contribution（NDC） presented by Argentina within the framework of the Paris Agreement is aligned with the decisions made in the context of the United Nations Framework Conven-tion on Climate Change（UNFCCC） on the reduction of emissions derived from deforestation and forest degradation, as well as forest carbon conservation（REDD+）. In addition, climate change constitutes one of the greatest threats to forest biodiversity and ecosystem services. However, the soil organic carbon（SOC） stocks of native forests have not been incorporated into the Forest Reference Emission Levels calculations and for conservation planning under cli-mate variability due to a lack of information. The objectives of this study were:（i） to model SOC stocks to 30 cm of native forests at a national scale using climatic, topographic and vegetation as predictor variables, and（ii） to relate SOC stocks with spatial–temporal remotely sensed indices to determine biodiversity conservation concerns due to threats from high inter-annual climate *** We used 1040 forest soil samples（0–30 cm） to generate spatially explicit estimates of SOC native forests in Argentina at a spatial resolution of approximately 200 m. We selected 52 potential predictive environmental covari-ates, which represent key factors for the spatial distribution of SOC. All covariate maps were uploaded to the Google Earth Engine cloud-based computing platform for subsequent modelling. To determine the biodiversity threats from high inter-annual climate variability, we employed the spatial–temporal satellite-derived indices based on Enhanced Vegetation Index（EVI） and land surface temperature（LST） images from Landsat *** SOC model（0–30 cm depth） prediction accounted for 69% of the variation of this soil property across the whole native forest coverage in Argentina. Total mean SOC stock reached 2.81 Pg C（2.71–2.84 Pg C with a probability of 90%） for a total area of 460,790 km2,

关键词： Soil organic carbon Biodiversity Native forest Climate change mitigation Modelling Resilience

Effect of probiotic administration on the intestinal microbiota, current knowledge and potential applications

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World Journal of Gastroenterology 2014年第44期20卷 16518-16528页

作者： alejandra de Moreno de Le Blanc Jean Guy Le Blanc Centro de Referencia para Lactobacilos San Miguel de Tucuman

Although it is now known that the human body is colonized by a wide variety of microbial populations in different parts(such as the mouth, pharynx and respiratory system, the skin, the gastro- and urogenital tracts), many effects of the complex interactions between the human host and microbial symbionts are still not completely understood. The dysbiosis of the gastrointestinal tract microbiota is considered to be one of the most important contributing factors in the development of many gastrointestinal diseases such as inflammatory bowel disease, irritable bowel syndrome and colorectal cancer, as well as systemic diseases like obesity, diabetes, atherosclerosis and non-alcoholic fatty liver disease. Fecal microbial transplantations appear to be promising therapies for dysbiosis-associated diseases; however, probiotic microorganisms have been growing in popularity due to increasing numbers of studies proving that certain strains present health promoting properties, among them the beneficial balance of the intestinal microbiota. Inflammatory bowel diseases andobesity are the pathologies in which there are more studies showing this beneficial association using animal models and even in human clinical *** this review,the association of the human gut microbiota and human health will be discussed along with the benefits that probiotics can confer on this symbiotic activity and on the prevention or treatment of associated diseases.

关键词： Probiotics Dysbiosis Gut microbiota Symbiosis Treatment

Portal Venous Thrombosis and Splenic Hemangioma, Secondary to Acute Pancreatitis: Case Report

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Open Journal of Gastroenterology 2024年第1期14卷 11-17页

作者： Gustavo Adolfo Hernández Valdez Harvey Yair Zamora Veliz Estefany Gilberty Mendoza Verdin Quitzia Mayanim Rentería Fonseca Itzel Velázquez Viniegra Janette alejandra Gamiño Gutierrez Diana Rita Velázquez Jimenez Florencio Favian Andrade Luis Fernando Baez Bustos Jorge Morales Rojas María Jacqueline Martínez Tejeda Graciela Gaddy Robles Martínez Juan Antonio Contreras Escamilla Departamento de Medicina Interna ISSSTE Tepic General Hospital APP Tepic Nayarit México General Surgery Department ISSSTE Tepic General Hospital APP Tepic Nayarit México Hospital Civil Fray Antonio Alcalde Guadalajara Jalisco México

We present an unusual case of portal vein thrombosis with a splanchnic hemangioma secondary to acute biliary pancreatitis. We report a 45-year-old patient, who has systemic arterial hypertension in treatment, was admitted for abdominal pain in the epigastrium, with irradiation to the right hypochondrium, accompanied by nausea and vomiting of 10 occasions of bile content, physical examination with pain in the right hypochondrium, Murphy positive. We have laboratory studies with a lipase of 788, so a diagnosis of pancreatitis is made with an etiology to be determined. The laboratories suggestive of acute biliary pancreatitis (lipase 788.71);an imaging study was subsequently performed (ultrasonography) with the result of stone in the common bile duct. A laparoscopy was performed with relative improvement, so he was discharged and returned 20 days after surgery due to abdominal pain of the same intensity in the left hypochondrium. Ending his hospitalization with a splenectomy for splenic hemangioma with portal vein thrombosis.

关键词： Pancreatitis Esplenic Hemangioma Esplenectomy Portal Vein Thrombosis Surgery

YKL40 expression in CD14^+ liver cells in acute and chronic injury

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World Journal of Gastroenterology 2011年第33期17卷 3830-3835页

作者： Oscar Pizano-Martínez Irinea Yaez-Sánchez Pilar Alatorre-Carranza alejandra Miranda-Díaz Pablo C ortiz-Lazareno Trinidad García-Iglesias Adrian Daneri-Navarro Mónica Vázquez-Del Mercado Mary Fafutis-Morris Vidal Delgado-Rizo Department of Physiology CUCSUniversity of GuadalajaraGuadalajaraJalisco 44340México Division of Immunology Centro de Investigación Biomédica de OccidenteIMSS.GuadalajaraJalisco 44340México

AIM:To demonstrate that CD14 + cells are an important source of the growth factor YKL40 in acute and chronic liver ***:Rats were inoculated with one dose of CCl4 to induce acute *** biopsies were obtained at 0,6,12,24,48 and 72 *** chronic damage,CCl4 was administered three days per week for 6 or 8 *** samples were collected,and cellular populations were isolated by liver digestion and purified by cell ***40 mRNA and protein expression were evaluated by realtime polymerase chain reaction and western ***:Acute liver damage induced a rapid increase of YKL40 mRNA beginning at 12 *** peaked at 24 h,with a 26fold increase over basal *** 72 h however,YKL40 expression levels had nearly returned to control *** the other hand,chronic damage induced a sustained increase in YKL40 expression,with 7and 9fold higher levels at 6 and 8 wk,*** pattern of YKL40 expression in different subpopulations showed that CD14+cells,which include Kupffer cells,are a source of YKL40 after acute damage at 72 h[0.09 relative expression units(REU)]as well as after chronic injury at 6 wk(0.11 REU).Hepatocytes,in turn,accounted for 0.06 and 0.01 REU after 72 h(acute)or 6 wk(chronic),*** rest of the CD14cells(including T lymphocytes,B lymphocytes,natural killer and natural killer T cells) yielded 0.07 and 0.15 REU at 72 h and 6 wk,***40 protein expression in liver was detected at 72 h as well as 6 and 8 wk,with the highest expression relative to controls(11fold;P≤0.05)seen at 6 *** were stimulated by *** demonstrate that under these conditions,these cells showed maximum expression of YKL40 at 12 h,with P<0.05 compared with ***:Hepatic CD14 + cells are an YKL40 mRNA and protein source in acute and chronic liver injury,with expression patterns similar to growth factors implicated in inflammationfibrogenesis.

关键词： YKL40 Kupffer cells Liver cirrhosis CD14 + cells

Proposed Strategies to Prevent High Solid Waste Generation,In the Urban Area of Panama

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Proposed Strategies to Prevent High Solid Waste Generation,I...

作者： Idalesky alejandra Nunez Peralta 上海交通大学

学位级别：硕士

The high waste generation in contrast to the limited capacity and infrastructure for its handling,the cultural patterns that exist,is a serious problem in Latin America,and Panama is not exempt from *** collects only the 65% of their total *** the total waste that they generate represents 1.22 *** person per *** does not have an integral system of waste management and treatment,not with the capacity,infrastructure,administration and economic flow for the amount of garbage *** activity in Panama and Latin America is basically done *** by the street workers who are exposed to diseases and pollution every *** contribution represents approximately 98% of the total activity of *** it is estimated that is only 2% of total solid waste ***,it is estimated that 70% of the solid waste of Panama,it is considered *** objectives of this research aims to cover a diagnosis of these factors influencing on the high generation of solid waste in Panama,explore the level of environmental and recycling culture of the citizens,analyze the development of the recycling industry,to evaluate strategies from model countries on waste management to analyze which of these strategies the Panamanian society would be more willing to *** methodology of this study included review of documents from previous studies,interview with the CO Founder of a Panamanian Foundation which helps to collect materials for recycling（Fundacion Costa Recicla）,and a survey for the evaluation of strategies,additional reports from the Government of Panama,at the same time official organizations of Latin America,The World Bank and *** results it was obtained,that in effect it is true the formulated by Forbes,about the five challenges in Latin America,that it is necessary: green politicians,education,fighting poverty,reuse of products and less *** have a good perception of the current and future eco

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