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Extrahepatic cholestasis associated with paracoccidioidomycosis:Challenges in the differential diagnosis of biliopancreatic neoplasia

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World Journal of Gastrointestinal Oncology 2024年第6期16卷 2531-2540页

作者： Jose Sebastiao dos Santos Vitor de Moura Arrais William Jose Rosseto Ferreira Ricardo Ribeiro Correa Filho Mariangela Ottoboni Brunaldi Rafael Kemp Ajith Kumar Sankanrakutty Jorge Elias Junior Fernando Bellissimo-Rodrigues Roberto Martinez Edson Zangiacomi Martinez Jose Celso Ardengh Faculdade de Medicina de Ribeirao Preto da Universidade de Sao Paulo(FMRP-USP) Departamento de Cirurgia e AnatomiaRibeirao Preto 14049-900Sao PauloBrazil Universidade de Sao Paulo Faculdade de Medicina de Ribeirao Preto da Universidade de Sao Paulo(FMRP-USP)Departamento de PatologiaRibeirao Preto 14048900Sao PauloBrazil Universidade de Sao Paulo Faculdade de Medicina de Ribeirao Preto da Universidade de Sao Paulo(FMRP-USP)Departamento de Imagens MédicasHematologia e Oncologia ClínicaRibeirao Preto 14048900Sao PauloBrazil Universidade de Sao Paulo Faculdade de Medicina de Ribeirao Preto da Universidade de Sao Paulo(FMRP-USP)Departamento de Medicina SocialRibeirao Preto 14015-010Sao PauloBrazil Universidade de Sao Paulo Faculdade de Medicina de Ribeirao Preto da Universidade de Sao Paulo(FMRP-USP)Departamento de Clínica MédicaRibeirao Preto 14015-010Sao PauloBrazil Universidade de Sao Paulo Faculdade de Medicina de Ribeirao Preto da Universidade de Sao Paulo(FMRP-USP)Departamento de Cirurgia e AnatomiaRibeirao Preto 14049-900Sao PauloBrazil and Hospital MoriahServico de Endoscopia DigestivaSao Paulo 04084-002Sao PauloBrazil

BACKGROUND Paracoccidioidomycosis(PCM)may involve the hepatic pedicle and peripan creatic lymph nodes,cause damage to the bile duct and manifest,exceptionally,in combination with extrahepatic cholestasis(EHC),making investigation and treatment *** To investigate the management of patients with visceral PCM admitted with *** All patients diagnosed with PCM treated in a public,tertiary teaching hospital between 1982 and 2020 were retrospectively *** also identified with EHC were allocated to two groups according to the treatment approach for the purpose of comparing clinical,laboratory,and imaging findings,resources used for etiological diagnosis,treatment results,and *** analyses were performed using the linear mixed-effects model(random and fixed effects),which was adjusted using the PROC MIXED procedure of the SAS®9.0 software,and Fisher’s exact *** Of 1645 patients diagnosed with PCM,40(2.4%)had *** these,20(50.0%)lived in the rural area and 29(72.5%)were men,with a mean age of 27.1 years(3-65 years).Jaundice as first symptom and weight loss of at least 10 kg were observed in 16 patients(40.0%),and a mass in the head of the pancreas was observed in 8(20.0%).The etiological diagnosis was made by tissue collection during surgery in 4 cases(10.0%)and by endoscopic methods in 3 cases(7.5%).Twenty-seven patients(67.5%)received drug treatment alone(Group 1),whereas 13(32.5%)underwent endoscopic and/or surgical procedures in combination with drug treatment(Group 2).EHC was significantly reduced in both groups(40.7% in Group 1,with a mean time of 3 months;and 38.4% in Group 2,with a mean time of 7.5 months),with no statistically significant difference between *** recurrence rates,associated mainly with treatment nonadherence,were similar in both groups:37% in Group 1 and 15.4% in Group *** mortality rate was 18.5% in Group 1 and 23% in Group 2,with survival estimates of 71.3% and 72.5%,respectively,with

关键词： Cholestasis Jaundice Obstructive Blastomycosis Paracoccidioides Diagnosis Treatment

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Breaking paradigms: Long non-coding RNAs forming gene fusions with potential implications in cancer

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Genes & Diseases 2024年第3期11卷 311-323页

作者： David Sanchez-Marin Macrina Beatriz Silva-Cazares Fany Iris Porras-Reyes Rebeca Garcia-Roman Alma D.Campos-Parra Posgrado en Ciencias Biologicas Facultad de MedicinaUniversidad Nacional Autonoma de MexicoCiudad de MexicoC.P.04360Mexico Unidad Academica Multidisciplinaria Region Altiplano Universidad Autonoma de San Luis Potost(UASLP)Carretera a Cedral Km 5+600Ejido San Jose de la TrojesMatehualaSan Luis PotosiC.P.78760Mexico Servicio de anatomia patologica Instituto Nacional de Cancerologia(INCan)Nino JesuisTlalpanCiudaddeMexicoC.P.14080Mexico Instituto de Salud Publica Universidad Veracruzana(UV)Av.Dr LuisDr.Castelazo Ayala s/nCol.Industrial AnimasXalapaVeracruzC.P.91190Mexico

Long non-coding RNAs(lncRNAs)are non-coding RNAs longer than 200 nucleotides with dynamic regulatory *** interact with a wide range of molecules such as DNA,RNA,and proteins to modulate diverse cellular functions through several mechanisms and,if deregulated,they can lead to cancer development and ***,it has been described that IncRNAs are susceptible to form gene fusions with mRNAs or other IncRNAs,breaking the paradigm of gene fusions consisting mainly of protein-coding ***,their biological significance in the tumor phenotype is still ***,their recent identification opens a new line of research to study their biological role in tumor-igenesis,and their potential as biomarkers with clinical relevance or as therapeutic *** present study aimed to review the IncRNA fusions identified so far and to know which of them have been associated with a potential *** address the current challenges to deepen their study as well as the reasons why they represent a future therapeutic window incancer.

关键词： Cancer Genefusions IncRNAs ncRNAs Therapy

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香椿的树木年轮宽度与超年生殖行为的相互关系:对树轮学研究的警示

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Journal of Plant Ecology 2024年第1期17卷 165-171页

作者： Monique Silva Costa Thaís Jorge de Vasconcellos Claudio Sergio Lisi Arno Fritz Neves Brandes Mario Tomazello-Filho Cátia Henriques Callado Instituto de Aplicação Fernando Rodrigues da Silveira Universidade do Estado do Rio de JaneiroRua Barão de Itapagipe96.Rio Comprido 20261-005Rio de JaneiroBrazil Laboratório de anatomia Vegetal Universidade do Estado do Rio de JaneiroRua São Francisco Xavier524Maracanã20550-013Rio de JaneiroBrazil departamento de Biologia Universidade Federal de SergipeAv.Marechal Rondon s/n-Rosa Elze.São Cristóvão 49100-000SergipeBrazil departamento de Biologia Geral Universidade Federal FluminenseRua Prof.Marcos Waldemar de Freitas ReisS/N.Gragoatá24210-201Rio de JaneiroBrazil Escola Superior de Agricultura Luiz de Queiroz Universidade de São PauloAv.Pádua Dias11.Piracicaba 13418-900São PauloBrazil

资源分配到生殖过程涉及到生态和进化因素,可能会减少植物的营养生长。这种相互关系在自然界中不容易观察到,因为有许多参数可以限制生殖结构的产生或生物量的增加。我们将香椿(Cedrela odorata L.,楝科)在里约热内卢州大西洋森林中的... 详细信息

资源分配到生殖过程涉及到生态和进化因素,可能会减少植物的营养生长。这种相互关系在自然界中不容易观察到,因为有许多参数可以限制生殖结构的产生或生物量的增加。我们将香椿(Cedrela odorata L.,楝科)在里约热内卢州大西洋森林中的树木年轮宽度与超年生殖行为相关联。总体而言,生殖结构的发育发生在湿润的年份,在生长季初期没有出现水分亏缺。然而,在这些年份,树木年轮宽度较小。这些结果可能与树木年轮宽度与当地气候之间缺乏相关性有关。因此,我们强调在径向生长研究中纳入生殖数据的重要性,以扩大对热带森林生长变异性的理解。

关键词：植物生长策略树木年轮学树木生态学生殖权衡

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Expression of HER2 and bradykinin B_1 receptors in precursor lesions of gallbladder carcinoma

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World Journal of Gastroenterology 2012年第11期18卷 1208-1215页

作者： Cesar Toledo Carola E Matus Ximena Barraza Pamela Arroyo Pamela Ehrenfeld Carlos D Figueroa Kanti D Bhoola Maeva del Pozo Maria T Poblete Laboratorio de Patologia Celular Instituto de AnatomiaHistologia y PatologiaUniversidad Austral de ChileValdivia Box 567Chile Servicio de anatomia patologica Hospital Base Lung Institute of Western AustraliaCentre for Asthma and Allergy Research InstituteUniversity of Western Australia

AIM： To determine the expression of HER2 and bradykinin B1 receptors （B1R） in the two pathogenic models of gallbladder cancer： the metaplasia dysplasia carcino ma and the adenoma carcinoma pathways.METHODS： Receptor proteins were visualized by immunohistochemistry on 5-μm sections of paraffin-embedded tissue. Expression of both receptors was studied in biopsy samples from 92 patients （6 males and 86 females; age ranging from 28 to 86 years, mean 56 years）. High HER2 expression in specimens was additionally investigated by fluorescence in situ hybridization. Cell proliferation in each sample was assessed by using the Ki-67 proliferation marker.RESULTS： HER2 receptor protein was absent in adenomas and in normal gallbladder epithelium. On the contrary, there was intense staining for HER2 on the basolateral membrane of epithelial cells of intestinal metaplasia （22/24; 91.7%） and carcinoma in situ （9/10; 90%）, the lesions that displayed a significantly high proliferation index. Protein up-regulation of HER2 in the epithelium with metaplasia or carcinoma in s/tu was not accompanied by HER2 gene amplification. A similar result was observed in invasive carcinomas （0/12）. The B1R distribution pattern mirrored that of HER2 except that B1R was additionally observed in the adenomas. The B1R appeared either as cytoplasmic dots or labeling on the apical cell membrane of the cells composing the epithelia with intestinal metaplasia （24/24; 100%） and carcinoma in situ （10/10; 100%） and in the epithelial cells of adenomas. In contrast, both HER2 （4/12; 33%） and B1R （1/12; 8.3%） showed a low expression in inva- sive gallbladder carcinomas.CONCLUSION： The up-regulation of HER2 and B1R in precursor lesions of gallbladder carcinoma suggests cross-talk between these two receptors that may be of importance in the modulation of cell proliferation in gallbladder carcinogenesis,

关键词： Bradykinin BI receptor HER2 Gallbladderadenoma Gallbladder dysplasia Intestinal metaplasia Gallbladder cancer

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Complete pancreatic heterotopia of gallbladder with hypertrophic duct simulating an adenomyoma

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World Journal of Gastroenterology 2006年第11期12卷 1786-1787页

作者： Luca Pilloni Alessandro Cois Alessandro Uccheddu Rossano Ambu Pierpaolo Coni Gavino Faa Istituto di anatomia patologica Dipartimento di Citomorfologia Universita degli Studi di CagliariItaly Semeiotica Chirurgica Dipartimento Chirurgico Materno Infantile e di Scienze delle Immagini Università degli Studi di CagliariItaly Istituto di anatomia patologica Dipartimento di Citomorfologia Università degli Studi di CagliariItaly

The gallbladder is an unusual location of pancreatic heterotopia, defined as the presence of pancreatic tissue lacking anatomical and vascular continuity with the main body of the gland. A 28-year-old man presented with anorexia, nausea and pain in the right upper abdomen. On physical examination, the abdomen was tender to palpation and Murphy sign was positive. The patient underwent a cholecystecomy. This case, in our opinion, is very interesting since it permits to consider a controversial issue in the pathology of the gallbladder. The histological appearance of ductal structure in pancreatic heterotopia resembles the histological picture of both Aschoff-Rokitansky （AR） sinuses and adenomyomas. This finding suggests that these lesions are linked by a common histogenetic origin. We suggest that the finding of an adenomyoma in the gallbladder should prompt an extensive sampling of the organ in order to verify the coexistence of pancreatic rests.

关键词： Pancreatic heterotopia Gallbladder Hypertrophic duct Adenomyoma Aschoff-Rokitansky sinuses

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Beneficial effects of losartan or telmisartan on the local hepatic renin-angiotensin system to counter obesity in an experimental model

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World Journal of Hepatology 2019年第4期11卷 359-369页

作者： Francielle Graus-Nunes Felipe de Oliveira Santos Thatiany de Souza Marinho Carolline Santos Miranda Sandra Barbosa-da-Silva Vanessa Souza-Mello Laboratorio de Morfometria Metabolismo e Doencas Cardiovasculares Departamento de Anatomia Instituto de Biologia Roberto Alcantara Gomes

BACKGROUND Obesity has been associated with hepatic overexpression of the renin-angiotensin system(RAS).AIM To evaluate the action of two angiotensin II(ANGII) receptor blockers(losartan or telmisartan) on the modulation of local hepatic RAS and the resulting metabolic effects in a diet-induced obesity murine *** Twenty C57 BL/6 mice were randomly divided into two nutritional groups for 10 wk: control group(C, n = 5, 10% of energy as fat) or high-fat group(HF, n = 15,50% of energy as fat). After treatment started, the HF group was randomly divided into three groups: untreated HF group(n = 5), HF treated with losartan(HFL, n = 5) and HF treated with telmisartan(HFT, n = 5). The treatments lasted for 5 wk, and the dose was 10 mg/kg body *** HF diet induced body mass gain(+28%, P demonstrated by reduced hepatic triacylglycerol levels coupled with reduced PLIN 2 expression and improved glycemic control.

关键词： Liver Telmisartan Losartan Obesity Angiotensin Ⅱ type 1 receptor C57BL/6 mouse

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Distinct patterns of mucosal apoptosis in H pylori-associated gastric ulcer are associated with altered FasL and perforin cytotoxic pathways

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World Journal of Gastroenterology 2006年第38期12卷 6133-6141页

作者： Heitor SP Souza Marcelo S Neves Celeste CS Elia Claudio JA Tortori Ilana Dines Cesonia A Martinusso Kalil Madi Leonardo Andrade Morgana TL Castelo-Branco departamento de Clínica Médica Instituto de Ciências Biomédicas Universidade Federal do Rio de Janeiro 21941-590 Brazil Laboratório Multidisciplinar de Pesquisa e Departamento de Anatomia Patologica Instituto de Ciências Biomédicas Universidade Federal do Rio de Janeiro 21941-590 Brazil Hospital Universitário Clementino Fraga Filho departamento de Histologia e Embriologia Instituto de Ciências Biomédicas Universidade Federal do Rio de Janeiro 21941-590 Brazil Laboratório de Imunologia Celular Instituto de Ciências Biomédicas Universidade Federal do Rio de Janeiro 21941-590 Brazil

AIM: To analyze the level of apoptosis in different mucosal compartments and the differential expression of Fas/Fas-ligand and perforin in H pylori-associated gastric ulcer. METHODS: Antral specimens from patients with H pylori-related active gastric ulcer (GU), H pylori-related gastritis, and non-infected controls were analysed for densities and distribution of apoptotic cells determined by the TdT-mediated dUDP-biotin nick-end-labelling method. GU patients were submitted to eradication therapy with follow-up biopsy after 60 d. Fas, FasL, and perforin-expressing cells were assessed by immunoper- oxidase, and with anti-CD3, anti-CD20 and anti-CD68 by double immunofluorescence and confocal microscopy. Quantitative analysis was performed using a computer- assisted image analyser. RESULTS: H pylori-infected antrum showed greater surface epithelial apoptosis which decreased after eradi- cation therapy. In the lamina propria, higher rates of mononuclear cell apoptosis were observed in H pylori- gastritis. Co-expression of Fas with T-cell and macro- phage markers was reduced in GU. FasL- and perforin-expressing cells were increased in H pylori-infection and correlated with epithelial apoptosis. Perforin-expressing cells were also increased in GU compared with H pylori- gastritis. CONCLUSION: Epithelial apoptosis is increased in H pylori-infection and correlates to FasL- and perforin- expression by T cells. Expression of perforin is correlated with the tissue damage, and may represent the enhance- ment of a distinct cytotoxic pathway in GU. Increased expression of FasL not paralleled by Fas on T-cells and macrophages may indicate a reduced susceptibility to the Fas/FasL-mediated apoptosis of lymphoid cells in H pylori-infection.

关键词： Gastric ulcer H pylori Apoptosis Fas receptor Fas ligand Perforin

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Intratumoral sampling variability in hepatocellular carcinoma: A case report

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World Journal of Gastroenterology 2007年第29期13卷 4019-4021页

作者： Giancarlo Senes Daniela Fanni Alessandro Cois Alessandro Uccheddu Gavino Faa Dipartimento di Citomorfologia Divisione di Anatomia Patologica University of Cagliari Cagliari Italy Dipartimento Chirurgico Materno Infantile e di Scienze delle Immagini Clinica Chirurgica University of Cagliari Cagliari Italy

The differential diagnosis between hepatocellular carcinoma （HCC） and regenerative liver nodules and other primary liver tumors may be very difficult, particularly when performed on liver biopsies. Difficulties in histological typing may be often minimized by immunohistochemistry. Among the numerous markers proposed, CK18, Hep Par1 and glypican 3 （GPC3） are considered the most useful in HCC diagnosis. Here we report a case of HCC in a 72-year-old male with HBV- related chronic liver disease, characterized by a marked morphological and immunohistochemical intratumoral variability. In this case, tumor grading ranged from areas extremely well differentiated, similar to regenerative nodule, to undifferentiated regions, with large atypical multinucleated cells. While almost all sub nodules were immunostained by Hep Par 1, immunoreactivity for glypican 3 and for Ckl8 was patchy, with negative tumor region adjacent to the highly immunoreactive areas. Our case stresses the relevance of sampling variability in the diagnosis of HCC, and indicates that caution should be taken in grading an HCC and in the interpretation of immunohistochemical stains when only small core biopsies from liver nodules are available.

关键词： Liver Hepatocellular carcinoma Sampling variability Hep Par 1 GPC3 Differentiation

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Animal models of acute gastric mucosal injury: Macroscopic and microscopic evaluation

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Animal Models and Experimental Medicine 2019年第2期2卷 121-126页

作者： Sandra Simoes Rui Lopes Maria Celeste Dias Campos Maria Joao Marruz Maria Eugenia Meirinhos da Cruz Luisa Corvo Faculdade de Farmacia Instituto de Investigacao do Medicamento (iMed. ULisboa) Universidade de Lisboa Lisboa Portugal Servico de anatomia patologica Hospital Curry Cabral Lisboa Portugal ANATOMIK Avenida Campo Grande 168 1700‐094 Lisboa Portugal Hospital do Mar Bobadela Portugal

Acute gastric mucosal injury is a common disorder of the gastrointestinal tract and the search for new therapeutics is ongoing. The aim of this study is to update and expand the information related to the most widely used rat models of acute gastric ulcer, the ethanol‐induced ulcer and the indomethacin‐induced ulcer. These two models are compared in terms of macroscopic and microscopic features. Experimentally, ethanol was given orally in a single dose and indomethacin was subcutaneously injected into male Wistar rats. After ulcerative challenges, the stomachs were removed and visually inspected. Anti‐ulcerative drugs were used to validate the models. Histological analysis of the stomachs determined the microscopic score. The methodology used for model evaluation applied to macroscopic and microscopic gastric lesions. With these methods it was possible to induce lesions in the gastric mucosa. Microscopic evaluation permitted assessment of the inflammatory and apoptotic impact in the mucosa not observable by macroscopic evaluation. Groups of animals were treated with two standard drugs: sulcralfate suspension or lansoprazole solution. Both drugs reduced macroscopic and microscopic lesions, particularly the hemorrhagic ones. Both models induced acute gastric mucosal injury and no single evaluation method can address all the aspects of the pathology of gastric lesions. As a complement to macroscopic evaluation, microscopy appears to be a relevant tool to selectively identify specific aspects of the development of mucosal injury, quantify the extent of lesions, and contribute to an appropriate interpretation of results. The score systems established here offer a reliable method for testing antiulcer drugs.

关键词： animal models gastric ulcer histology pre-clinical assays

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Neuroinflammation and oxidative stress act in concert to promote neurodegeneration in the diabetic retina and optic nerve:galectin-3 participation

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Neural Regeneration Research 2020年第4期15卷 625-635页

作者： Henrique Rocha Mendonca Raul Carpi-Santos Karin da Costa Calaza Ana Maria Blanco Martinez Laboratorio de Neurodegeneracao e Reparo Departamento de PatologiaPrograma de Pos-graduacao em Anatomia PatologicaFaculdade de MedicinaHospital Universitrio Clementino Fraga FilhoFederal University of Rio de JaneiroRio de JaneiroBrazil Polo Universitario Macae Unidade Integrada de Pesquisa em Produtos Bioativos e BiocienciasFederal University of Rio de JaneiroMacaeBrazil Laboratorio Integrado de Morfologia Instituto de Biodiversidade e SustentabilidadeNucleo de Pesquisas Ecologicas de MacaeFederal University of Rio de JaneiroMacaeBrazil Laboratorio de Neurobiologia Celular Instituto de Ciencias BiomedicasCentro de Ciencias da SaudeFederal University of Rio de JaneiroRio de JaneiroBrazil Laboratorio de Neurobiologia da Retina Departamento de NeurobiologiaPrograma de Pos-Graduacao em NeurocienciasFluminense Federal UniversityNiteroiBrazil

Diabetes is a lifelong disease characterized by glucose metabolic imbalance,in which low insulin levels or impaired insulin signaling lead to hyperglycemic *** 20 years of diabetes progression,95%of patients will have diabetic retinopathy,the leading cause of visual defects in working-age people *** diabetes is considered a microvascular disease,recent studies have shown that neurodegeneration precedes vascular changes within the diabetic visual system,albeit its mechanisms are still under *** and oxidative stress are intrinsically related phenomena,since macrophage/microglia and astrocytes are the main sources of reactive oxygen species during central nervous system chronic degenerative diseases,and both pathological processes are increased in the visual system during *** present review will focus on recent findings of the contribution of oxidative stress derived from neuroinflammation in the early neurodegenerative aspects of the diabetic visual system and their relationship with galectin-3.

关键词： diabetes diabetic retinopathy galectin-3 neurodegeneration neuroinflammation optic nerve oxidative stress retina

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