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Immediate and late effects of chronic stress in the testes of prepubertal and adult rats

Asian Journal of Andrology 2018年第4期20卷 385-390页

作者： carina t rib.iro Diogo B De Souza Waldemar S Costa Francisco J B Sampaio Marco A Pereira-Sampaio Urogenital Research Unit State University of Rio de Janeiro Rio de Janeiro RJ 20551-030 Brazil Department of Morphology Fluminense Federal University Niteroi RJ 24210-150 Brazil

the objective of this study was to investigate the effects of chronic stress on the testes of prepubertal and adult rats and to evaluate whether any alterations could be reversed when stress induction is ended. Seventy-six male rats were assigned to eight groups depending on the type of treatment （control or stressed）, the age at which stress was initiated （prepubertal or adult）, and the time of evaluation （immediate or late）. Stress stimuli were applied for 6 weeks. Stressed prepubertal and adult rats evaluated immediately after the last stress stimulus were included in SP-I and SA-I groups, respectively. the late prepubertal （SP-L） and adult （SA-L） groups of stressed rats were evaluated 6 weeks after the last stress stimulus. Age-matched rats were used as controls （CP-I, CA-I, CP-L, and CA-L groups）. Application of stress stimuli to rats in the SP-I group resulted in body weight and seminiferous tubule diameter reduction. the rats in the SA-I group also showed several functional （testosterone level and sperm parameter） and morphological （testicular weight and seminiferous tubule diameter） reductions. the rats in the SP-L group showed increased body weight and intertubular compartment volumetric and absolute densities and reduced tubular compartment volumetric density. the rats in the SA-L group presented only reduced sperm viability. Stress stimuli promoted changes in the rats in all the study groups. the testes of the adult rats were the most affected by chronic stress. However, the stressed adult rats recovered well from the testicular alterations.

关键词： chronic stress morphometry rat testis

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地下水过量开采的概率风险分析

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自然灾害学报 2007年第2期16卷 101-105页

作者：束龙仓 Basil t.iro Ong'or 陶玉飞海河大学水文水资源与水利工程科学国家重点实验室江苏南京210098

应用一种概率风险分析方法评价了济宁市地下水水位降落漏斗区的风险度。该方法引入了可靠度和严重度来进行分析评价,可靠度从宏观上反映了含水层系统的安全可靠程度,而严重度从微观上详细地刻画了含水层系统的易破坏程度。其中,影响可... 详细信息

应用一种概率风险分析方法评价了济宁市地下水水位降落漏斗区的风险度。该方法引入了可靠度和严重度来进行分析评价,可靠度从宏观上反映了含水层系统的安全可靠程度,而严重度从微观上详细地刻画了含水层系统的易破坏程度。其中,影响可靠度大小的因子主要有可开采量和实际开采量,严重度大小的主要影响因子包括实际开采量、净补给、降深和含水层的初始饱和厚度。在可靠度和严重度计算结果的基础上,利用ArcG IS软件计算了漏斗区风险度的空间分布。结果表明:占研究区总面积5.53%的中部地区风险度最大,而西部和南部的风险度相对很小,符合该地区实际的水文地质条件和地下水资源的开采现状。

关键词：降落漏斗可靠度严重度风险度 ArcGIS

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Hepatic grooves:An observational study at laparoscopic surgery

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World Journal of Experimental Medicine 2024年第2期14卷 97-102页

作者： Shamir O Cawich Dexter A thomas Fawwaz Mohammed Michael t Gardner Marlene Craigie Shaneeta Johnson Ramnanand S Kedambady Department of Surgery University of the West IndiesSt Augustine 000000Trinidad and Tobago Department of Surgery Port of Spain General HospitalPort of Spain 000000Trinidad and Tobago Section of Anatomy Basic Medical SciencesUniversity of the West IndiesKingston 000000Jamaica Department of Radiology University of the West IndiesKingston 000000Jamaica Department of Surgery Morehouse School of MedicineAtlantaGA 30310United States Section of Anatomy Department of Basic Medical SciencesUniversity of the West IndiesKingston KIN7Jamaica

BACKGROUND In traditional descriptions,the upper surface of the liver is smooth and convex,but deep depressions are variants that are present in 5%-40%of *** sought to determine the relationship between surface depressions and the *** to use exploratory laparoscopy to determine the relationship between surface depressions and the *** An observational study was performed in all patients undergoing laparoscopic upper gastro-intestinal operations between January 1,2023 and January 20,2024.A thirty-degree laparoscope was used to inspect the liver and *** surface depressions were present,we recorded patient demographics,presence of diaphragmatic bands,rib protrusions and/or any other source of compression during *** Of 394 patients,343 had normal surface anatomy,and 51(12.9%)had prominent surface depressions on the *** was no significant relationship between the presence of surface depressions and gender nor the presence of rib ***,there was significant association between the presence of surface depressions and diaphragmatic muscular bands(Pth these data,the diaphragmatic-band theory has gained increased importance over other theories for surface *** studies are warranted using cross sectional imaging to confirm relationships with intersectional planes as well as beta-catenin assays in the affected liver parenchyma.

关键词： Liver Variant Vein Hepatic Surgery

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Long-term safety follow-up of children from a randomized-controlled phase Ⅱb proof-of-concept efficacy study of the live,attenuated,tetravalent dengue vaccine (CYD-tDV) in thailand

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Asian Pacific Journal of tropical Medicine 2019年第9期12卷 396-403页

作者： Kriengsak Limkittikul Weerawan Hattasingh Danaya Chansinghakul Arunee Sabchareon Wut Dulyachai carina Frago t Anh Wartel Edith Langevin Sophia Gailhardou Alain Bouckenooghe Department of tropical Peditrics Faculty of Tropical MedicineManidol Unizersiy420/6 Ratchawithi RoodBanghqk10400Thailand Sonofi Pastewr Clirical Sciences 872 CRC Tover 23nd FloorAll Seasons PlaceWireless RodLumpiniPathumwanBanghokThoiland Ratchaburi Hospital 77/4Kathatorm RoadTambon Na MuangAmphoe Muang RatchaburiThailand Sanofi Pasteur Clinical Sciences 38 Beach Roud#18-11 South Beach TowerSingapore 189767 Sanofi Pasteur Clinical Programs Marcy L EioileFrance Sanofi Pusteur Globol Purrmcorigiane Lyon France

Objective:to investigate the long-term safety of a tetravalent dengue vaccine(CYD-tDV)in children in a phase Ⅱ b follow-up study in ***:In the phase Ⅱb study,children aged 4-11 years were randomized(2:1)to receive three injections of CYD-tDV or serve as control at 6-month intervals,with 25 months’ active follow-up(active phase).this study was an additional four-year passive surveillance for hospitalized virologically-confirmed dengue(VCD;hospital phase).Cases of hospitalized VCD,severe hospitalized VCD,vaccine-related serious adverse events,and deaths were reported for the total population,with post-hoc analyses by enrollment age(ts:Of 3 997 participants receiving≥1 injection,80.1% were recruited to the hospital phase[2 131(CYD-tDV);1 072(control)].Eighty-five hospitalized VCD cases were reported in the CYD-tDV group and 46 in the control group during the four-year hospital phase[relative risk(RR):0.93,95% confidence interval(Cl):0.64-1.36].the RR over six years of follow-up was 0.77(95% CI:0.57-1.05).In those aged≥9 years,the cumulative RRs in the active phase,hospital phase,and entire six years were 0.28(95% CI:0.08-0.81),0.51(95% CI:0.25-1.05),and 0.42(95% CI:0.24-0.75),*** the overall population,there were ten severe hospitalized VCD cases in the CYD-tDV group and five in the control group over six years(RR:1.00,95% CI:0.31-3.75).Conclusions:Over six years of follow-up,in children aged ≥9 years,CYD-tDV administration is associated with a reduced risk of hospitalized VCD.

关键词： CYD-tDV Dengue vaccine Hospitalized dengue Severe dengue Virologtically confirmed dengue

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Improving cover and management factor (C-factor) estimation using remote sensing approaches for tropical regions

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International Soil and Water Conservation Research 2019年第4期7卷 325-334页

作者： André Almagro thais Caregnatto thomé carina Barbosa Colman Rodrigo Bahia Pereira José Marcato Junior Dulce Buchala Bicca Rodrigues Paulo tarso Sanches Oliveira Federal University of Mato Grosso do Sul CxP 549 Campo Grande MS 79070-900 Brazil

the Revised Universal Soil Loss Equation (RUSLE)'s cover and management factor (C-factor) is one of the most difficult factors to obtain,mainly because long-term monitoring soil erosion plots under natural rainfall are ***,remote sensing approaches have been used as an alternative for obtaining this ***,there is a lack of studies comparing values of this factor computed from remote sensing approaches with measured *** this study,we compare two widely used remote sensing approaches (CrA and CVK) to estimate the C-factor based on the Normalized Difference Vegetation Index (NDVI) with the literature (CLIt) and field experimental data..We also investigated the influence of C-factor methods on the prediction of soil loss and sediment yield (SY) using measured data in the Guariroba basin,Central-West *** obtained mean C-factor values of 0.032,0.023 and 0.137 for CLIt,CrA and CVK,*** found an average annual soil loss of 2.20 tha-1 yr-1,2.02 t ha-1 yr-1 and 10.07 tha-1 yr-1 and SY values of 6875 tyr-1,6468 tyr-1 and 33,435 t yr1,for CLIt,CrA and CVK *** results indicated a significant improvement in soil loss and SY estimations by using the CrA approach developed for tropical regions,with a bias of 13% to the measured SY (5709tyr-1).We conclude that the CrA method present the most suitable alternative to compute soil loss and SY in tropical ***,this approach allows large-scale evaluation and temporal monitoring,therefore enhancing multi spatial and temporal assessment of soil erosion processes.

关键词： Soil erosion RUSLE NDVI Landsat 8 Land use/land cover

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Establishment,functional and genetic characterization of three novel patient-derived rectal cancer cell lines

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World Journal of Gastroenterology 2018年第43期24卷 4880-4892页

作者： Michael Gock Christina S Mullins carina Bergner Friedrich Prall Robert Ramer Anja Goder Oliver H Kramer Falko Lange Bernd J Krause Ernst Klar Michael Linnebacher Department of General Surgery University Medical CenterRostock 18055Germany Section of Molecular Oncology and Immunotherapy University MedicalCenterRostock 18055Germany Department of NuclearMedicine University Medical CenterRostock 18055Germany Institute of Pathology University MedicalCenterRostock 18055Germany Institute of Pharmacology University Medical CenterRostock 18055Germany Institute of toxicology University Medical Center MainzMainz 55131Germany Oscar-Langendorff-Institute of Physiology University Medical CenterRostock 18055Germany

AIM to establish patient-individual tumor models of rectal cancer for analyses of novel biomarkers, individual response prediction and individual therapy *** Establishment of cell lines was conducted by direct in vitro culturing and in vivo xenografting with subsequent in vitro culturing. Cell lines were in-depth characterized concerning morphological features, invasive and migratory behavior, phenotype, molecular profile including mutational analysis, protein expression, and confirmation of origin by DNA fingerprint. Assessment of chemosensitivity towards an extensive range of current chemotherapeutic drugs and of radiosensitivity was performed including analysis of a combined radioand chemotherapeutic treatment. In addition, glucose metabolism was assessed with 18 F-fluorodeoxyglucose(FDG) and proliferation with 18 *** We describe the establishment of ultra-low passage rectal cancer cell lines of three patients suffering from rectal cancer. two cell lines(HROC126, HROC284 Met) were established directly from tumor specimens while HROC239 t0 M1 was established subsequent to xenografting of the tumor. Molecular analysis classified all three cell lines as CIMP-0/non-MSI-H(sporadic standard) type. Mutational analysis revealed following mutational profiles: HROC126: APC^(wt), tP53^(wt), KRAS^(wt), BRAF^(wt), PtEN^(wt); HROC239 t0 M1: APC^(mut), P53^(wt), KRAS^(mut), BRAF^(wt), PtEN^(mut) and HROC284 Met: APC^(wt), P53^(mut), KRAS^(mut), BRAF^(wt), PtEN^(mut). All cell lines could be characterized as epithelial(EpCAM+) tumor cells with equivalent morphologic features and comparable growth kinetics. the cell lines displayed a heterogeneous response toward chemotherapy, radiotherapy and their combined application. HROC126 showed a highly radio-resistant phenotype and HROC284 Met was more susceptible to a combined radiochemotherapy than HROC126 and HROC239 t0 M1. Analysis of 18 F-FDG uptake displayed a markedly reduced FDG uptake of all th

关键词： Patient-derived tumor model Rectal cancer ^(18)F-fluorodeoxyglucose ^(18)F-fluorothymidine FOLFOX FOLFIRI Personalized medicine

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Single-operator cholangioscopy for biliary complications in liver transplant recipients

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World Journal of Gastroenterology 2017年第22期23卷 4064-4071页

作者： Anna Hüsing-Kabar Hauke Sebastian Heinzow Hartmut Hans-Jürgen Schmidt carina Stenger Hans Ulrich Gerth Michele Pohlen Gerold tholking Christian Wilms Iyad Kabar Department of transplant Medicine University Hospital Muenster Department of Medicine D Division of General Internal MedicineNephrology and RheumatologyUniversity Hospital Muenster Department of Medicine A Hematology and OncologyUniversity Hospital Muenster

to evaluate cholangioscopy in addition to endoscopic retrograde cholangiopancreatography (ERCP) for management of biliary complications after liver transplantation (Lt).MEtHODStwenty-six Lt recipients with duct-to-duct biliary reconstruction who underwent ERCP for suspected biliary complications between April and December 2016 at the university hospital of Muenster were consecutively enrolled in this observational study. After evaluating bile ducts using fluoroscopy, cholangioscopy using a modern digital single-operator cholangioscopy system (SpyGlass DS™) was performed during the same procedure with patients under conscious sedation. All patients received peri-interventional antibiotic prophylaxis and bile was collected during the intervention for microbial analysis and for antibiotic susceptibility ***-three biliary complications were found in a total of 22 patients, whereas four patients showed normal bile ducts. Anastomotic strictures were evident in 14 (53.8%) patients, non-anastomotic strictures in seven (26.9%), biliary cast in three (11.5%), and stones in six (23.1%). A benefit of cholangioscopy was seen in 12 (46.2%) patients. In four of them, cholangioscopy was crucial for selective guidewire placement prior to planned intervention. In six patients, biliary cast and/or stones failed to be diagnosed by ERCP and were only detectable through cholangioscopy. In one case, a bile duct ulcer due to fungal infection was diagnosed by cholangioscopy. In another case, signs of bile duct inflammation caused by acute cholangitis were evident. One patient developed post-interventional cholangitis. No further procedure-related complications occurred. thirty-seven isolates were found in bile. Sixteen of these were gram-positive (43.2%), 12 (32.4%) were gram-negative bacteria, and Candida species accounted for 24.3% of all isolated microorganisms. Interestingly, only 48.6% of specimens were sensitive to prophylactic ***-operator c

关键词： Cholangioscopy Endoscopic retrograde cholangiopancreatography Liver transplantation Biliary complications Biliary strictures

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Assessing neuraxial microstructural changes in a transgenic mouse model of early stage Amyotrophic Lateral Sclerosis by ultra-high field MRI and diffusion tensor metrics

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Animal Models and Experimental Medicine 2020年第2期3卷 117-129页

作者： Rodolfo G.Gatto carina Weissmann Manish Amin Ariel Finkielsztein Ronen Sumagin thomas H.Mareci Osvaldo D.Uchitel Richard L.Magin Department of Bioengineering University of Illinois at ChicagoChicagoILUSA Instituto de Fisiología Biologia Molecular y Neurociencias-IFIBYNE-CONICEt University of Buenos AiresBuenos AiresArgentina Department of Biochemistry National High Magnetic Field LaboratoryUniversity of FloridaGainesvilleFLUSA Department of Pathology School of MedicineNorthwestern UniversityChicagoILUSA

Objective: Cell structural changes are one of the main features observed during the development of amyotrophic lateral sclerosis(ALS). In this work, we propose the use of diffusion tensor imaging(DtI) metrics to assess specific ultrastructural changes in the central nervous system during the early neurodegenerative stages of ***: Ultra-high field MRI and DtI data at 17.6 t were obtained from fixed, excised mouse brains, and spinal cords from ALS(G93 A-SOD1) ***: Changes in fractional anisotropy(FA) and linear, planar, and spherical anisotropy ratios(C_L, C_P, and C_S, respectively) of the diffusion eigenvalues were measured in white matter(WM) and gray matter(GM) areas associated with early axonal degenerative processes(in both the brain and the spinal cord). Specifically, in WM structures(corpus callosum, corticospinal tract, and spinal cord funiculi) as the disease progressed, FA, C_L, and C_P values decreased, whereas C_S values increased. In GM structures(prefrontal cortex, hippocampus, and central spinal cord) FA and C_P decreased, whereas the C_L and C_S values were unchanged or slightly smaller. Histological studies of a fluorescent mice model(YFP, G93 A-SOD1 mouse) corroborated the early alterations in neuronal morphology and axonal connectivity measured by ***: Changes in diffusion tensor shape were observed in this animal model at the early, nonsymptomatic stages of ALS. Further studies of C_L, C_P, and C_S as imaging biomarkers should be undertaken to refine this neuroimaging tool for future clinical use in the detection of the early stages of ALS.

关键词： amyotrophic lateral sclerosis animal models diffusion tensor imaging G93A-SOD1 mice ultra-high field MRI

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Using detection dogs and genetic analyses of scat to expand knowledge and assist felid conservation in Misiones, Argentina

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Integrative Zoology 2014年第5期9卷 623-639页

作者： Karen E.DeMAttEO Miguel A.RINAS carina F.ARGÜELLES Bernardo E.HOLMAN Mario S.DI BItEttI Barbara DAVENPORt Patricia G.PARKER Lori S.EGGERt Department of Biology University of MissouriSt.LouisUSA WildCare Institute at the Saint Louis Zoo St.LouisUSA Ministerio de Ecología y Recursos Naturales Renovables Argentina Instituto de Biología Subtropical(IBS)-nodo Posadas Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET)-Universidad Nacional de Misiones(UNaM)Argentina Facultad de Ciencias Exactas Químicas y NaturalesUNaMArgentina IBS-nodo Puerto Iguazú CONICET-UNaMArgentina Asociación Civil Centro de Investigaciones del Bosque Atlántico Argentina PackLeader Dog training LLC Division of Biological Sciences University of MissouriColumbiaUSA

Many carnivores require large ranges to meet their ecological and energetic needs;however,anthropogenic changes threaten species and their *** traps have been used to effectively collect data on carnivores in a variety of habitat types;however,a single survey effort is typically limited to species that have similar body size,habitat use and movement patterns,and individual identification of animals is not always pos*** evaluated whether scat detection dogs could effectively survey for 4 wide-ranging felids that vary in these characteristics:jaguars(Panthera onca),pumas(Puma concolor),ocelots(Leopardus pardalis)and oncillas(Leopardus tigrinus).From June to October 2009 and May to August 2011,a detection dog-handler team detected 588 scats,from which 176 unique genotypes were *** assigned sex to 84.7%of the genotyped scats and identified 55 individuals multiple *** effectiveness of these noninvasive techniques(detection dogs and genetic analyses of scat)not only opens the door for additional studies in areas that were previously difficult or impossible with standard survey techniques,but also provides conservationists with a set of tools that overcome some of the limitations associated with the use of camera traps alone.

关键词： conservation detection dogs felids genetics noninvasive techniques

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A proto-monsoonal climate in the late Eocene of Southeast Asia:Evidence from a sedimentary record in central Myanmar

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Geoscience Frontiers 2023年第1期14卷 46-63页

作者： Huasheng Huang Robert J.Morley Alexis Licht Guillaume Dupont-Nivet Daniel Pérez-Pinedo Jan Westerweel Zaw Win Day Wa Aung Eko Budi Lelono Galina N.Aleksandrova Ramesh K.Saxena carina Hoorn Institute for Biodiversity and Ecosystem Dynamics(IBED) University of Amsterdam1090 GE AmsterdamThe Netherlands Palynova Ltd. 1 Mow Fen RoadLittleportCambridgeshire CB61PYUK Department of Earth Sciences Royal HollowayUniversity of LondonEghamSurrey TW200EXUK Centre de Recherche et d'Enseignement de Géosciences de I'Environnement(CEREGE) Aix-en-ProvenceFrance Institut fur Geowissenschaften Universität Potsdam14476 PotsdamGermany Géosciences Rennes CNRS and Universitéde Rennes 135042 Rennes CedexFrance Geology Department Shwe Bo UniversitySagaing RegionMyanmar Department of Geology University of YangonPyay RoadYangonMyanmar Badan Geologi Jl.Soekarno Hatta No 444BandungBandung 40254Indonesia Geological Institute Russian Academy of SciencesPyzhevsky Pereulok 7119017 MoscowRussia Birbal Sahni Institute of Palaeosciences 53 University RoadLucknow 226007India Department of Earth Sciences University of FlorenceVia G.La Pira 450121 Florenceltaly Department of Earth Sciences Memorial University of New-foundlandSt.John'sNewfoundland A1B 3X5Canada

the Burma terrane has yielded some of the earliest pieces of evidence for monsoonal rainfall in the Bay of ***,Burmese ecosystems and their potential monsoonal imprint remain poorly *** study focuses on the late Eocene Yaw Formation(23°N)in central Myanmar,which was located near the equator(c.5°N)during the *** quantitatively assessed the past vegetation,climate,and depositional environments with sporomorph diagrams,bioclimatic analysis,and sequence *** calculated the palynological diversity and drew inferences with rarefaction analysis by comparing with four other middle to late Eocene tropical *** results highlight a high floristic diversity for the palynoflora throughout the section formed by six pollen zones characterized by different *** indicate that lowland evergreen forests and swamps dominated in the Eocene Burmese deltaic plains while terra firma areas were occupied by seasonal evergreen,seasonally dry,and deciduous *** vegetation pattern is typical to what is found around the Bay of Bengal today and supports a monsoon-like climate at the time of the Yaw *** analysis further suggests that in the late Eocene,the Yaw Formation was more seasonal,drier,and cooler compared to modern-day climate at similar near-equatorial *** seasonal and drier conditions can be explained by a well-marked seasonal migration of the Intertropical Convergence Zone(ItCZ),driver of proto-monsoonal *** temperatures in the late Eocene of central Myanmar may be due to the lack of adequate modern analogues for the Eocene monsoonal climate,while those found at other three Eocene Asian paleobotanical sites(India and South China)may be caused by the effect of canopy evapotranspirational *** data suggest that paleoenvironmental change including two transgressive-regressive depositional sequences is controlled by global sea level change,which may be driven by cl

关键词： Bioclimatic analysis Diversity Monsoon Palynology Sequence biostratigraphy Southeast Asia

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