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Endoscopic submucosal dissection in dogs in a World Gastroenterology Organisation training center

World Journal of Gastroenterology 2010年第14期16卷 1759-1764页

作者： Miguel A Tanimoto Gonzalo Torres-Villalobos Rikiya Fujita Patricio Santillan-Doherty jorge albores-saavedra German Gutierrez Luis A Martin-del-Campo Carlos Bravo-Reyna Octavio Villanueva Jose J Villalobos Misael Uribe Miguel A Valdovinos Department of Gastroenterology and World Gastroenterology Organisation Training Center National Institute of Medical Sciences and Nutrition Salvador Zubiran Mexico City 14000 Mexico Department of Surgery and Experimental Surgery National Institute of Medical Sciences and Nutrition Salvador Zubiran Mexico City 14000 Mexico The Cancer Institute Hospital of JFCR Tokyo Tokyo 135-8550 Japan Department of Pathology National Institute of Medical Sciences and Nutrition Salvador Zubiran Mexico City 14000 Mexico Department of Experimental Surgery National Institute of Medical Sciences and Nutrition Salvador Zu- biran Mexico City 14000 Mexico Animal lab and Department of Experimental Research National Institute of Medical Sciences and Nutrition Salvador Zubiran Mexico City 14000 Mexico

AIM: To evaluate if canine models are appropriate for teaching endoscopy fellows the techniques of endoscopic submucosal dissection (ESD). METHODS: ESD was performed in 10 canine models under general anesthesia, on artificial lesions of the esophagus or stomach marked with coagulation points. After ESD, each canine model was euthanized and surgical resection of the esophagus or stomach was carried out according to "The Principles of Humane Experimental Technique, Russel and Burch". The ESD specimens were fixed with needles on cork submerged in a formol solution with the esophagus or stomach, and delivered to the pathology department to be analyzed. RESULTS: ESD was completed without complications using the Hook-knife in five esophageal areas, with a procedural duration of 124 ± 19 min, a length of 27.4 ± 2.6 mm and a width of 21 ± 2.4 mm. ESD was also completed without complications using the IT-knife2 in five gastric areas, with a procedural duration of 92.6 ± 19 min, a length of 32 ± 2.5 mm and a width of 18 ± 3.7 mm. CONCLUSION: ESD is feasible in the normal esopha- gus and stomach of canine models, which are appropriate for teaching this technique.

关键词： Endoscopic mucosal resection Endoscopic submucosal dissection Stomach neoplasms Training

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Existence of Supercritical Hopf Bifurcation on a Type-Lorenz System

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Journal of Applied Mathematics and Physics 2023年第3期11卷 780-789页

作者： Evodio Muñoz-Aguirre jorge Alvarez-Mena Pablo Emilio Calderón-saavedra Josué Ramírez-Ortega Francisco Gabriel Hernández-Zamora Universidad Veracruzana Xalapa México Universidad del Tolima Ibagué Colombia

In this paper, a system of Lorenz-type ordinary differential equations is considered and, under some assumptions about the parameter space, the presence of the supercritical non-degenerate Hopf bifurcation is demonstrated. The technical tool used consists of the Central Manifold theorem, a well-known formula to calculate the Lyapunov coefficient and Hopf’s Theorem. For particular values of the parameters in the parameter space established in the main result of this work, a graph is presented that describes the evolution of the trajectories, obtained by means of numerical simulation.

关键词： Lorenz-Type System Subcritical Hopf Bifurcation Supercritical Hopf Bifurcation Hopf Theorem

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Diversity and host assemblage of avian haemosporidians in different terrestrial ecoregions of Peru

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Current Zoology 2022年第1期68卷 27-40页

作者： Luz GARCIA-LONGORIA Jaime MURIEL Sergio MAGALLANES Zaira Hellen VILLA-GALARCE Leonila RICOPA Wilson Giancarlo INGA-DIAZ Esteban FONG Daniel VECCO Cesar GUERRA-SALDANA Teresa SALAS-RENGIFO Wendy FLORES-saavedra Kathya ESPINOZA Carlos MENDOZA Blanca SALDANA Manuel GONZALEZ-BLAZQUEZ Henry GONZALES-PINEDO Charlene LUJAN-VEGA Carlos Alberto Del AGUILA Yessica VILCA-HERRERA Carlos Alberto PINEDA Carmen REATEGUI jorge Manuel CARDENAS-CALLIRGOS JoseAlberto IANNACONE jorge Luis MENDOZA Ravinder NMSEHGAL Alfonso MARZAL Departamento de Anatomia Biologia Celular y ZoologiaUniversidad de ExtremaduraBadajoz E-506071Spain Molecular Ecology and Evolution Lab Department of BiologyLund UniversitySolvegatan 37SE-22362 LundSweden Instituto Pirenaico de Ecologıa-IPE(CSIC) Avda.Nuestra Senora de la Victoria 16Jaca 22700Spain DIRESA Direccion Regional de SaludLoreto 16001Peru Departamento Academico de Microbiologia y Parasitologia.Facultad de Ciencias Biologicas Universidad Nacional de la Amazonia PeruanaIquitos 16001Peru Facultad de Ciencias Agropecuarias Universidad Alas PeruanasLima 15823Peru EverGreen Institute-San Rafael Distrito de IndianaLoreto 16200Peru Observatorio de Aves Loreto(LBO) Distrito de San JuanLoreto 16008Peru Centro Urku de Estudios Amazonicos Tarapoto 22200Peru Servicio Nacional de Areas Naturales Protegidas por el Estado 15036Peru Sanidad Animal-Facultad de Zootecnia Universidad Nacional Agraria La MolinaLima 15012Peru Laboratorio de Microbiologia Facultad de Medicina Veterinaria y ZootecniaUniversidad CientUfica del SurLima 15067Peru Laboratorio de Analisis Clinico Moraleslab SAC MoralesSan Martin 22201Peru Asociacion Ecosistemas Andinos(ECOAN) Cuzco 08002Peru Pharmacology and Toxicology Graduate Group University of CaliforniaDavisDA 95616USA Global Health Initiative Wabash CollegeCrawfordsvilleIN 47933USA Facultad de Ciencias Biologicas Universidad Nacional Mayor de San MarcosLima 15081Peru Facultad de Medicina Veterinaria Universidad Nacional Hermilio ValdizanHuanuco10160Peru Asociacion Peruana de Helmintologia e Invertebrados Afines Lima 15054Peru Laboratorio de Ecologia y Biodiversidad Animal Universidad Nacional Federico VillarrealEl AgustinoLima 15007Peru Laboratorio de Invertebrados Universidad Ricardo Palma-Santiago de SurcoLima 15537Peru Department of Biology San Francisco State UniversitySan FranciscoCA 94132USA

Characterizing the diversity and structure of host–parasite communities is crucial to understandingtheir eco-evolutionary *** and related haemosporidian parasites are responsible forfitness loss and mortality in bird species ***,despite exhibiting the greatest ornithologicalbiodiversity,avian haemosporidians from Neotropical regions are quite ***,we analyze the genetic diversity of bird haemosporidian parasites(Plasmodium andHaemoproteus)in 1,336 individuals belonging to 206 bird species to explore for differences in diversityof parasite lineages and bird species across 5 well-differentiated Peruvian *** 70 different haemosporidian lineages infecting 74 bird *** showed that 25 out ofthe 70 haplotypes had not been previously ***,we also identified 81 new host–parasite interactions representing new host records for these haemosporidian *** outcomesrevealed that the effective diversity(as well as the richness,abundance,and Shannon–Weaver index)for both birds and parasite lineages was higher in Amazon basin ***,we also showed that ecoregions with greater diversity of bird species also had highparasite richness,hence suggesting that host community is crucial in explaining parasite *** parasites were found in ecoregions with lower bird diversity,implying that the abundanceand richness of hosts may shape the exploitation strategy followed by haemosporidian *** outcomes reveal that Neotropical region is a major reservoir of unidentified *** studies analyzing host distribution and specificity of these parasites inthe tropics will provide important knowledge about phylogenetic relationships,phylogeography,and patterns of evolution and distribution of haemosporidian parasites.

关键词： Amazonia avian malaria generalist parasite habitat specificity Haemoproteus Plasmodium specialist parasite

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Effects of Organic and Chemical Agriculture Systems on Arbuscular Mycorrhizal Fungi and Green Tomato Production in Calakmul, Mexico

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Agricultural Sciences 2018年第9期9卷 1145-1167页

作者： Yuriko Pilar Cruz-Koizumi José Armando Alayón-Gamboa Alejandro Morón-Ríos jorge Castellanos-albores Ana Aguilar-Chama Roger Guevara Departamento de Conservación de la Biodiversidad El Colegio de la Frontera Sur Unidad Campeche Ciudad Industrial Lerma Campeche México Departamento de Conservación de la Biodiversidad El Colegio de la Frontera Sur Unidad San Cristóbal de las Casas María Auxiliadora San Cristóbal de las Casas Chiapas México Red de Biología Evolutiva Instituto de Ecología A.C. El Haya Xalapa Veracruz México

Organic agriculture is increasingly used as an alternative to conventional agriculture due to its positive impact on the health of ecosystems and agroecosystems. However, the outcome of organic agriculture in terms of the production of various crops remains uncertain due to the influence of many variables, rising questions about its advantages over conventional agriculture. This study assessed the impacts of organic agricultural system on arbuscular mycorrhizal (AM) fungi diversity in soil and green tomato (Physalis ixocarpa Brot. ex Horn) crop production. A field experiment was conducted using a random block design with five repetitions of the following treatments: a) Control (no fertilization, NF);b) Vermicompost use (OTV);c) OTV with vermicompost leaching (OTH);and d) Inorganic fertilization (CST). Throughout the crop cycle, soil samples were analyzed chemically, the relative growth rate (RGR) of the plants was measured, and the colonization and diversity of AM fungi were quantified in roots and soil;finally, above-ground, root biomass, and fruit production were measured. Organic fertilization (OTV, OTH) increased (p p > 0.05). It is concluded that organic agriculture management is essential to promote a greater AM fungi diversity and fungi root colonization. Plant-AM fungi interaction increases growth rates and it allows a similar tomato production compared with conventional agriculture.

关键词： Vermicompost Agrochemical Fertilization Biodiversity

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胆囊和肝外胆管肿瘤的组织学分类

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国际肿瘤学杂志 1992年第1期19卷 53-53页

作者： albores-saavedra J 刘德纯

关键词：腺癌腺瘤乳头状

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HMB-45在普通型子宫平滑肌肉瘤中的表达

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临床与实验病理学杂志 2007年第3期23卷 265-265页

作者： Simpson K W albores-saavedra J 付长霞（摘译）张仁亚（审校）不详潍坊医学院病理学教研室潍坊261042 济宁272029 济宁272029

子宫平滑肌肉瘤具有从高分化到低分化较宽的形态学谱系变化。在谱系的一端是分化好的肿瘤细胞,由梭形细胞组成,平滑肌细胞容易识别,细胞具有非典型性,核分裂象和凋亡增多。在谱系的另一端肿瘤分化差,除上述表现外,还有大量的间变和多核... 详细信息

子宫平滑肌肉瘤具有从高分化到低分化较宽的形态学谱系变化。在谱系的一端是分化好的肿瘤细胞,由梭形细胞组成,平滑肌细胞容易识别,细胞具有非典型性,核分裂象和凋亡增多。在谱系的另一端肿瘤分化差,除上述表现外,还有大量的间变和多核巨细胞。此外,一些平滑肌肿瘤由HMB-45阳性的上皮样透明细胞组成,称为血管周上皮样细胞肿瘤(PEComa)。[第一段]

关键词：子宫平滑肌肉瘤 HMB-45 普通型血管周上皮样肿瘤细胞细胞组成平滑肌细胞多核巨细胞

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胰腺实性-假乳头状肿瘤透明细胞变异型

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临床与实验病理学杂志 2006年第6期22卷 695-695页

作者： albores-saavedra J Simpson K W Bilello S J 潘敏鸿（摘译）饶秋（摘译）周晓军（审校）不详南京军区南京总医院病理科南京210002

胰腺实性-假乳头状肿瘤（SPTP）是一种罕见但具有特征性的肿瘤，转移率低，仅占胰腺恶性肿瘤的1％～2％，死亡率极低约1.5％，其细胞表型尚不明确，可有灶性透明细胞，其胞质透明的机制不清。作者报道3例完全由透明细胞组成的SPPT变异型... 详细信息

胰腺实性-假乳头状肿瘤（SPTP）是一种罕见但具有特征性的肿瘤，转移率低，仅占胰腺恶性肿瘤的1％～2％，死亡率极低约1.5％，其细胞表型尚不明确，可有灶性透明细胞，其胞质透明的机制不清。作者报道3例完全由透明细胞组成的SPPT变异型，2例为会诊病例，1例为外检病例，2例女性，均32岁，1例男性，26岁，2例无任何不适而偶然发现，1例腹痛数月，血清CEA和CA19．9水平均正常。2例行CT检查即诊断该病。大体：肿瘤界限清楚，累及胰体和尾部，未见明显包膜，肿块大小4．5～8cm，切面灰白、质硬，可见囊性变和出血灶。镜下：以管状结构为主，可见片状结构，小管由厚度不等的玻璃样变的纤维组织分割，可见局灶浸润至边缘胰腺组织，玻璃样变的间质见明显的黏液样区域。

关键词：胰腺恶性肿瘤乳头状肿瘤透明细胞变异型实性 CA19.9 会诊病例管状结构

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