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Pseudocirrhosis in a pancreatic cancer patient with liver metastases: A case report of complete resolution of pseudocirrhosis with an early recognition and management

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World Journal of Gastroenterology 2008年第10期14卷 1622-1624页

作者： soonmo peter kang Tamar Taddei Bruce McLennan Jill Lacy Yale Cancer Center Yale University School of Medicine New Haven Connecticut 06520 United States Yale University School of Medicine Department of Medicine Section of Digestive Diseases New Haven Connecticut 06520 United States Yale University School of Medicine Department of Diagnostic Radiology New Haven Connecticut 06520 United States

We report a case of pseudocirrhosis arising in the setting of regression of liver metastases from pancreatic cancer. A 55-year-old asymptomatic woman presented to our clinic with newly diagnosed metastatic pancreatic cancer with extensive liver metastases. She underwent systemic chemotherapy with gemcitabine and oxaliplatin (GEMOX). After 8 cycles of therapy, she had a remarkable response to the therapy evidenced by decline of carcinoembryonic antigen (CEA) and CA19 by > 50% and nearly complete resolution of hepatic metastases in computed tomography (CT) scan. Shortly after, she developed increasing bilateral ankle edema and ascites, associated with dyspnea, progressive weight gain, and declining performance status. Gemcitabine and oxaliplatin were discontinued as other causes of her symptoms such as congestive heart disease or venous thrombosis were ruled out. CT scan 6 mo after the initiation of GEMOX revealed worsening ascites with a stable pancreatic mass. However, it also revealed a lobular hepatic contour, segmental atrophy, and capsular retraction mimicking the appearance of cirrhosis. She was managed with aggressive diuresis and albumin infusions which eventually resulted in a resolution of the above- mentioned symptoms as well as complete resolution of pseudocirrhotic appearance of the liver and ascites in CT scan. This case demonstrates that pancreatic cancer patients can develop pseudocirrhosis. Clinicians and radiologist should be well aware of this entity asearly recognition and management can lead to a near complete recovery of liver function and much improved quality of life as illustrated in this case.

关键词： Pseudocirrhosis Pancreatic cancer Nodular regenerative hyperplasia Chemotherapy induced liver toxicity

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Lattice Boltzmann Method for Reacting Flows in Porous Media

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Advances in Applied Mathematics and Mechanics 2010年第5期2卷 545-563页

作者： Qinjun kang peter C.Lichtner David R.Janecky Computational Earth Sciences Group Los Alamos National LaboratoryLos AlamosNM 87545U.S.A Ecology and Air Quality Group Los Alamos National LaboratoryLos AlamosNM 87545U.S.A

We review recent developments in lattice Boltzmann method for reacting flows in porous *** present the lattice Boltzmann approaches for incompressible flow,solute transport and chemical reactions in both the pore space and at the fluid/solid *** discuss in detail the methods to update solid phase when significant mass transfer between solids and fluids is involved due to dissolution and/or *** in different areas are presented and perspectives of applying this method to a few important fields are discussed.

关键词： Reactive flows lattice Boltzmann method porous media pore scale

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Carbon dioxide fluxes of tundra vegetation communities on an esker top in the low-Arctic

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Advances in Polar Science 2020年第3期31卷 167-177页

作者： peter M.LAFLEUR A.Brett CAMPEAU Sohee kang School of the Environment Trent UniversityPeterboroughOntarioCanada Geography Department Trent UniversityPeterboroughOntarioCanada Department of Computer and Mathematical Sciences University of Toronto ScarboroughTorontoOntarioCanada

Previous studies have shown that carbon dioxide fluxes vary considerably among Arctic environments and it is important to assess these differences in order to develop our understanding of the role of Arctic tundra in the global carbon cycle. Although many previous studies have examined tundra carbon dioxide fluxes, few have concentrated on elevated terrain(hills and ridge tops) that is exposed to harsh environmental conditions resulting in sparse vegetation cover and seemingly low productivity. In this study we measured carbon dioxide(CO2) exchange of four common tundra communities on the crest of an esker located in the central Canadian low-Arctic. The objectives were to quantify and compare CO2 fluxes from these communities, investigate responses to environmental variables and qualitatively compare fluxes with those from similar communities growing in less harsh lowland tundra environments. Measurements made during July and August 2010 show there was little difference in net ecosystem exchange(NEE) and gross ecosystem production(GEP) among the three deciduous shrub communities, Arctous alpina, Betula glandulosa and Vaccinium uliginosum, with means ranging from -4.09 to -6.57 μmol·m^-2·s^-1 and -7.92 to -9.24 μmol·m^-2·s^-1, respectively. Empetrum nigrum communities had significantly smaller mean NEE and GEP(-1.74 and -4.08 μmol·m^-2·s^-1, respectively). Ecosystem respiration(ER) was similar for all communities(2.56 to 3.03 μmol·m^-2·s^-1), except the B. glandulosa community which had a larger mean flux(4.66 μmol·m^-2·s^-1). Overall, fluxes for these esker-top communities were near the upper range of fluxes reported for other tundra communities. ER was related to soil temperature in all of the communities. Only B. glandulosa GEP and ER showed sensitivity to a persistent decline in soil moisture throughout the study. These findings may have important implications for how esker tops would be treated in construction of regional carbon budgets and for predicting the im

关键词： tundra carbon exchange net ecosystem exchange gross ecosystem productivity ecosystem respiration low-Arctic esker top xerophytes

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Schizandra arisanensis extract attenuates cytokine-mediated cytotoxicity in insulin-secreting cells

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World Journal of Gastroenterology 2012年第46期18卷 6809-6818页

作者： Yi-Shin Hsu Yao-Haur Kuo Hui-Ling Cheng peter R Flatt Hui-kang Liu Division of Herbal Drugs and Natural Products National Research Institute of Chinese Medicine Graduate Institute of Integrated Medicine China Medical University School of Biomedical Sciences University of Ulster

AIM: To explore the bioactivity of an ethanolic extract of Schizandra arisanensis (SA-Et) and isolated constituents against interleukin-1 β and interferon-γ-mediated β cell death and abolition of insulin secretion. METHODS: By employing BRIN-BD11 cells, the effects of SA-Et administration on cytokine-mediated cell death and abolition of insulin secretion were evaluated by a viability assay, cell cycle analysis, and insulin assay. The associated gene and protein expressions were also measured. In addition, the bioactivities of several peak compounds collected from the SA-Et were tested against cytokine-mediated β cell ***: Our Results revealed that SA-Et dose-dependently ameliorated cytokine-mediated β cell death and apoptosis. Instead of suppressing inducible nitric oxide synthase/nitric oxide cascade or p38MAPK activity, suppression of stress-activated protein kinase/c-Jun NH2-terminal kinase activity appeared to be the target for SA-Et against the cytokine mix. In addition, SA-Et provided some insulinotropic effects which re-activated the abolished insulin exocytosis in cytokine-treated BRIN-BD11 cells. Finally, schiarisanrin A and B isolated from the SA-Et showed a dose-dependent protective effect against cytokine-mediated β cell death. CONCLUSION: This is the first report on SA-Et ameliorating cytokine-mediated β cell death and dysfunction via anti-apoptotic and insulinotropic actions.

关键词： Schizandra arisanensis C19 homolignans Type 1 diabetes Insulin-secreting cells Interleukin-1β Interferon-γ

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Mapping nanoscale topographic features in thick tissues with speckle diffraction tomography

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Light(Science & Applications) 2023年第9期12卷 1877-1885页

作者： Sungsam kang Renjie Zhou Marten Brelen Heather K.Mak Yuechuan Lin peter T.C.So Zahid Yaqoob Laser Biomedical Research Center G.R.Harrison Spectroscopy LaboratoryMassachusetts Institute of TechnologyCambridgeMA 02139USA Department of Biomedical Engineering The Chinese University of Hong KongHong KongChina Department of Ophthalmology and Visual Sciences The Chinese University of Hong KongHong KongChina Department of Mechanical Engineering Massachusetts Institute of TechnologyCambridgeMA 02139USA Department of Biological Engineering Massachusetts Institute of TechnologyCambridgeMA 02139USA Department of Biomedical Engineering Boston UniversityBostonMA 02215USA

Resolving three-dimensional morphological features in thick specimens remains a significant challenge for label-free *** report a new speckle diffraction tomography(SDT)approach that can image thick biological specimens with~500 nm lateral resolution and~1μm axial resolution in a reflection *** SDT,multiple-scattering background is rejected through spatiotemporal gating provided by dynamic speckle-field interferometry,while depth-resolved refractive index maps are reconstructed by developing a comprehensive inverse-scattering model that also considers specimen-induced *** from the high-resolution and full-field quantitative imaging capabilities of SDT,we successfully imaged red blood cells and quantified their membrane fluctuations behind a turbid medium with a thickness of 2.8 scattering mean-free *** importantly,we performed volumetric imaging of cornea inside an ex vivo rat eye and quantified its optical properties,including the mapping of nanoscale topographic features of Dua’s and Descemet’s membranes that had not been previously visualized.

关键词： speckle inverse interferometry

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A proposal:a comprehensive platform to characterize tumors in Chinese and improve success in cancer drug discovery and development

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Chinese Journal of Cancer 2011年第6期30卷 363-367页

作者： Pearl S. Huang peter T. Ho kang Zhang Beigene Ltd. Beijing 102206 P. R. China Molecular Medicine Center West China Hospital Sichuan University Chengdu SJchuan 610041 P. R. China Institute for Genomic Medicine and Shiley Eye Center University of California at San Diego La Jolla CA 92093 USA.

Cancer is a collection of complex diseases in which cell proliferation and apoptosis are dysregulated due to the acquisition of genetic changes in cancer *** genetic changes,combined with the interrelated physiologic adaptations of neo-angiogenesis,recruitment of stromal support tissues,and suppression of immune recognition,are measurable characteristics in tumor gene expression profiles and biochemical *** measures can lead to identification of disease drivers and,ultimately,can be used to assign *** advances in RNA sequencing technologies,the ability to simultaneously measure all genetic and gene expression changes with a single technology is now *** ability to create a comprehensive catalog of genotypic and phenotypic changes in a collection of histologically similar but otherwise distinct tumors should allow for a more precise positioning of existing targeted therapies and identification of new targets for intervention.

关键词：药物发现肿瘤基因表达谱开发抗癌中国平台基因变化

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Generalized Anxiety and Major Depressive Symptoms of General Public in South Korea during the Early COVID-19 Pandemic

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International Journal of Mental Health Promotion 2021年第3期23卷 303-317页

作者： Kye S.Kim peter M.kang He Sook N.Kim Department of Medicine Beth Israel Deaconess Medical Center and Harvard Medical SchoolBostonMA 02215USA Department of Child&Family Studies Yonsei UniversitySeoul03722South Korea

The extent of viral spread and strategies in dealing with the COVID-19 pandemic have been different in each *** are overall increased mental health concerns in many countries but it is unclear what the general public individuals who do not have heighten vulnerability to stressors for existing mental diseases or significant physical illnesses were experiencing during the *** evaluated the stressors and mental health of general public in South Korea that has a relatively low confirmed cases and *** on the on-line survey questions were used to assess the mental and physical symptoms in association with individuals’reported *** with the symptoms of the generalized anxiety disorder(GAD)were reported in 58.9%,and major depression(MD)in 23.2%,mostly in minimal to mild degrees,cut-off scores of 5 and 10,respectively by the validated screening tools,GAD-7 and *** GAD and MD symptoms were in 21.5%of the *** total number of stress had significant association with the scores of GAD-7,PHQ-9,physical symptoms,sleep difficulties and resilience(p<0.01).GAD scores were also associated with sleep difficulties(p<0.01)and raising young children(p<0.05).MD scores were associated with sleep difficulties,job-dissatisfaction,and educational level(p<0.05).The limitations of the study include small sample size,usage of smartphone or email,potential under-reporting by stigma in the socio-cultural context and evolving nature of *** conclude that keeping careful watch for mental symptoms,stressors,sleep difficulties and other physical symptoms are important even for the individuals without previous mental illnesses during the pandemic era.

关键词： Generalized anxiety disorder symptoms major depression symptoms sleep difﬁculties physical symptoms pandemic stressors South Korea generalized anxiety disorder-7(GAD-7) patient health questionnaire-9(PHQ-9)

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Inoculation of Chlorella and Food Waste Improves the Physio-Morphological Features of Red Pepper by Regulating Activating Antioxidant Defense System

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Phyton-International Journal of Experimental Botany 2023年第9期92卷 2699-2711页

作者： Sang-Mo kang Shifa Shaffique Muhammad Imran Su-Mi Jeon Shabir Hussain Wani Muhammad Aaqil Khan peter Odongkara Eun-Hae Kwon Yosep kang Joon-Ik Son Won-Chan Kim In-Jung Lee Department of Applied Biosciences Kyungpook National UniversityDaegu41566Korea Biosafety Division National Institute of Agriculture ScienceRural Development AdministrationJeonju54874Korea Department of Technical Support Daegu City Agricultural Technology CenterDaegu41159Korea Department of Chemical and Life Sciences Qurtuba University of Science and Information TechnologyPeshawarPakistan Mountain Research for Field Crops Khudwani Shere-e-Kashmir University of Agriculture Sciences and Technology SrinagarJamu and KashmirIndia Corporate Affiliated Research Institute Seyen Co.Ltd.Kyungsan38561Korea

Food waste is recognized as a valuable source for potential agricultural applications to supply organic matter and nutrients to arable ***,the information on the combined application of food waste and the plant growth-promoting bacterial strain,Chlorella,related to plant metabolic features and sodium chloride content in arable soil is *** present study was conducted to investigate the exogenous application of food waste along with Chlorella,which improved the physio-morphological features of red *** results revealed that this combination enhanced the organic matter in the soil,ultimately improving the fertility rate of the soil,and the physio-morphological features,such as chlorophyll a content(24.5±0.7),root(7.8±0.7)cm and shoot length(12.1±0.7)cm,fresh weight(2.1±0.05)g,dry weight(0.19±0.05)g,mineral contents,and hormonal concentration(ABA by up to 2 folds).The combined treatment also minimized free radicals via the activation of the intrinsic antioxidant series cascade and electrolyte *** findings showed that adding Chlorella and food wastes improved growth characteristics and can be used as a green bio-fertilizer for sustainable agriculture.

关键词： Food waste Chlorella hormone antioxidant

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The competition and equilibrium in power markets under decar-bonization and decentralization

iEnergy

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iEnergy 2022年第2期1卷 188-203页

作者： Qixin Chen Xichen Fang Hongye Guo Kedi Zheng Qinghu Tang Ruike Lyu Kaikai Pan peter Palensky Daniel SKirschen Chongqing kang Department of Electrical Engineering Tsinghua UniversityBeijing 100084China College of Electrical Engineering Zhejiang UniversityHangzhou 310058China Department of Electrical Sustainable Energy Delft University of Technology2600 AA DelftThe Netherlands Department of Electrical and Computer Engineering University of WashingtonSeattleWA 98195USA

Equilibrium analysis has been widely studied as an effective tool to model gaming interactions and predict market ***,as competition modes are fundamentally changed by the decarbonization and decentralization of power systems,analysis techniques must *** article comprehensively reviews recent developments in modelling methods,practical settings and solution tech-niques in equilibrium ***,we review equilibrium in the evolving wholesale power markets which feature new entrants,novel trading products and multi-stage ***,the competition modes in the emerging distribution market and distributed resource aggregation are reviewed,and we compare peer-to-peer clearing,cooperative games and Stackelberg ***-more,we summarize the methods to treat various information acquisition degrees,risk preferences and rationalities of market *** deal with increasingly complex market settings,this review also covers refined analytical techniques and agent-based models used to compute the ***,based on this review,this paper summarizes key issues in the gaming and equilibrium analysis in power markets under decarbonization and decentralization.

关键词： Power markets high renewable penetration equilibrium analysis modelling methods solution techniques recent develop-ments

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地下水位较高条件下不同根区湿润方式对梨树根与茎液流及其水分平衡的影响

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农业工程学报 2001年第3期17卷 15-23页

作者：康绍忠胡笑涛 Ian Goodwin peter Jerie 西北农林科技大学旱区农业水土工程教育部重点实验室杨凌712100 澳大利亚持续灌溉农业研究所

为了探讨地下水位较高条件下根区湿润方式对梨树根和茎液流及水分平衡的影响 ,开展了较系统的试验研究。试验共设三种处理 ,即传统畦灌 (CFI) ,部分根干燥灌溉 (PRD)和分根区交替灌溉 (ARDI) ,分别使用土壤水分监测系统 (Enviro SCAN)... 详细信息

为了探讨地下水位较高条件下根区湿润方式对梨树根和茎液流及水分平衡的影响 ,开展了较系统的试验研究。试验共设三种处理 ,即传统畦灌 (CFI) ,部分根干燥灌溉 (PRD)和分根区交替灌溉 (ARDI) ,分别使用土壤水分监测系统 (Enviro SCAN)和热脉冲探针监测土壤水分动态和梨树根和茎液流。结果表明在 PRD和 ARDI情况下湿润根区的根液流不仅大于干燥根区 ,而且也大于 CFI情况下的相同区域。复水后 ,ARDI干燥区的根液流比 PRD的恢复和提高快得多 ,并且比 CFI的大 ;ARDI的茎液流比 CFI的小 ,但比 PRD保持一侧根干燥时的大。在只有一侧根区灌溉时 ,ARDI和 PRD的日耗水量比 CFI的小。 ARDI和 PRD中湿润侧的根系具有水分吸收补偿效应 ,当干燥根区复水后能够提高水分的吸收能力 ,其程度与根区持续干燥的时间长短有关。逐日根液流与参考作物蒸发蒸腾量关系密切 ,但随着表面灌溉方式和湿润根区的不同这些关系明显的不一样。逐日茎液流与参考作物蒸发蒸腾量有关 ,而且在不同的表面灌溉方式下 ,土壤含水率相同时茎液流和参考作物蒸发蒸腾量的比率不同。与 CFI相比 ,ARDI和 PRD大约少用 5 0 %的灌溉水量 ,但是梨树的水分消耗量和茎液流并没减少相同的比例。表面湿润方式对水量平衡和液流的作用明显受到地下水位的影响。

关键词：液流水量平衡地下水位部分根干燥梨树根区湿润方式灌溉技术

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