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从天然提取物或分离部位中以烯醇式丙酮酸转移酶为靶点的抗细菌活性筛选(英文)

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云南植物研究 2003年第1期25卷 90-94页

作者：姜立花谭宁华杨亚滨汪俊松付祥 Lars JOHANNSEN hartwig mueller Thomas HENKEL 中国科学院昆明植物研究所植物化学与西部植物资源持续利用国家重点实验室云南昆明650204 Bayer AG PH-R-EU

目的是以烯醇式丙酮酸转移酶 (EPT)为靶点筛选其抑制剂 ,以期寻找抗细菌活性样品。实验是在 96孔酶标板上对来源于 16 9个科、 5 6 0个属、 916种动植物 2 4 90个提取物或分离部位样品在EPT模型上进行了批量筛选。结果表明在 96 15 μg... 详细信息

目的是以烯醇式丙酮酸转移酶 (EPT)为靶点筛选其抑制剂 ,以期寻找抗细菌活性样品。实验是在 96孔酶标板上对来源于 16 9个科、 5 6 0个属、 916种动植物 2 4 90个提取物或分离部位样品在EPT模型上进行了批量筛选。结果表明在 96 15 μg/ml浓度下发现了来源于 80个科、 16 9个属、 2 18个种的 30 9个样品有活性 ,其中 14个样品的IC50 小于 10 0 0 μg/ml,4 0个样品的IC50 在 10 0 1～ 30 0 0 μg/ml范围 ,83个样品的IC50 在 30 0 1～ 5 0 0 0 μg/ml范围 ,172个样品的IC50 在 5 0 0 1～ 96 15 μg/ml范围。通过以上工作我们认为以烯醇式丙酮酸转移酶为分子靶点的体外筛选方法稳定、方便、快速、微量、有效。

关键词：烯醇式丙酮酸转移酶抑制剂抗细菌活性天然产物天然提取物分离部位体外筛选

The transcription factor HSFA7b controls thermomemory at the shoot apical meristem by regulating ethylene biosynthesis and signaling in Arabidopsis

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Plant Communications 2024年第3期5卷 47-61页

作者： Sheeba John Federico Apelt Amit Kumar Ivan FAcosta Dominik Bents Maria Grazia Annunziata Franziska Fichtner Caroline Gutjahr Bernd mueller-Roeber Justyna J.Olas University of Potsdam Institute of Biochemistry and BiologyKarl-Liebknecht-Straße 24-25Haus 2014476 PotsdamGermany Max Planck Institute of Molecular Plant Physiology Am Muehlenberg 114476 PotsdamGermany Laboratory of Molecular Biology Wageningen University6700 AP Wageningenthe Netherlands Center of Plant Systems Biology and Biotechnology(CPSBB) 14 St.Knyaz Boris 1 Pokrastitel Str.4023 PlovdivBulgaria Present address:Institute of Plant Biochemistry Heinrich Heine University DusseldorfUniversit€atsstr.140225 DusseldorfGermany Leibniz Institute of Vegetable and Ornamental Crops Theodor-Echtermeyer-Weg 114979 GroßbeerenGermany

The shoot apical meristem(SAM)is responsible for overall shoot growth by generating all aboveground *** research has revealed that the SAM displays an autonomous heat stress(HS)memory of a previous non-lethal HS *** the importance of the SAM for plant growth,it is essential to determine how its thermomemory is mechanistically ***,we report that HEAT SHOCK TRAN-SCRIPTION FACTOR A7b(HSFA7b)plays a crucial role in this process in Arabidopsis,as the absence of functional HSFA7b results in the temporal suppression of SAM activity after *** found that HSFA7b directly regulates ethylene response at the SAM by binding to the promoter of the key ethylene signaling gene ETHYLENE-INSENSITIVE 3 to establish ***,we demonstrated that HSFA7b regulates the expression of ETHYLENE OVERPRODUCER 1(ETO1)and ETO1-LIKE 1,both of which encode ethylene biosynthesis repressors,thereby ensuring ethylene homeostasis at the *** together,these results reveal a crucial and tissue-specic role for HSFA7b in thermomemory at the Arabidopsis SAM.

关键词： ethylene response heat stress adaptation shoot apical meristem SAM thermopriming thermomemory

Increased Mortality Risk in Children with Fetal Alcohol Spectrum Disorders: A Scoping Review

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Open Journal of Pediatrics 2024年第4期14卷 754-766页

作者： Devin Evavold Tyler mueller Erika Johnson Marilyn G. Klug Larry Burd School of Medicine and Health Sciences University of North Dakota Grand Forks USA

Objective: Fetal Alcohol Spectrum Disorders (FASDs) are common, often undiagnosed, lifelong developmental disorders that result from prenatal alcohol exposure. FASD is present at birth and typically identified around seven years of age. The most severe outcome in cases of FASD is mortality. The purpose of this scoping review is to 1) use a systematic review to provide an estimated mortality proportion for children with FASD, and 2) update a study published in 2014 by reviewing published reports of mortality in individuals diagnosed with FASD. Method: A search of PubMed, CINAHL, and Google Scholar for reports published between 2013 and 2023 on mortality in individuals with FASD. Results: Three population-based studies have reported on all-cause mortality rates, finding a combined mortality rate of 10.9%, a 2.63 fold (95% CI: 2.61 to 2.65) increase in mortality risk over the general population. Since 2016, this review identified only eight new cases meeting the study inclusion criteria. The reported causes of death were five cases of pneumonia, and one case each of failure to thrive and dehydration, intestinal dilatation and asphyxiation caused by overeating due to pica, and acute gastric volvulus. Discussion: While current research suggests a diagnosis of FASD is associated with a 2.6-fold increase in mortality risk, this is likely an underestimation, as most cases of FASD-related mortality go unreported. Globally, about 1 new case is reported every 15 months. However, in the United States alone, between 1752 to 4400 FASD related deaths occur annually. Our review suggests that FASD is rarely identified as a causal or contributing factor in deaths of children and adolescents, resulting in a substantial undercount of FASD-related deaths. Increased attention to the role of FASD in infant and child mortality case reviews, child death review committee reports, and mortality reviews is needed.

关键词： Fetal Alcohol Spectrum Disorders Mortality Birth Defects Death Exposure Pneumonia

Is a Mini-Screen for Fetal Alcohol Spectrum Disorder Feasible?

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Open Journal of Pediatrics 2024年第4期14卷 767-781页

作者： Tyler mueller Devin Evavold June-Yung Kim Marilyn G. Klug Larry Burd School of Medicine and Health Sciences University of North Dakota Grand Forks USA Department of Social Work University of North Dakota Grand Forks USA

Background: Fetal Alcohol Spectrum Disorders (FASDs) are a global public health concern with lifelong consequences for affected individuals. Recent prevalence studies suggest FASD prevalence rates range from 1-5% among school age children. Most people with FASD are not correctly diagnosed and inadequate screening to identify patients with increased risk may contribute to under-diagnosis. This study developed a 10-item screening tool for FASD and examined its feasibility. Methods: The sample consisted of 355 children who had been evaluated at an FASD clinic. Data from the 33-item Alcohol Related Neurodevelopmental Disorder Behavioral Checklist was used to develop a brief FASD screen by comparing the changes in Cronbach’s alpha for different combinations of items. The validity of the brief scale was then further examined using receiving operating characteristic analyses. Results: The 10-item screen demonstrated acceptable sensitivity, specificity, and accuracy to identify children at high risk for FASD. The percentage correctly classified was 91.3 and the area under the receiving operating characteristic curve was 0.971. Conclusions: This feasibility study demonstrated that a screen for FASD consisting of 10 items with yes or no responses can be completed in 3 - 4 minutes. The tool is brief, with a low administration burden and has acceptable epidemiologic performance characteristics including accuracy. Future research should examine the performance of this tool when used in larger, community-based populations where screening for FASD would be appropriate.

关键词： Fetal Alcohol Spectrum Disorders (FASDs) Children Screening Prevalence

Primary carbohydrate metabolism genes participate in heat-stress memory at the shoot apical meristem of Arabidopsis thaliana

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Molecular Plant 2024年第4期17卷 676-676页

作者： Justyna Jadwiga Olas Federico Apelt Maria Grazia Annunziata Sheeba John Sarah Isabel Richard Saurabh Gupta Friedrich Kragler Salma Balazadeh Bernd mueller-Roeber 不详

(Molecular Plant 14,1508-1524,September 62021)After the original publication of the above article,attentive readers identified errors in Figure 4H that needed correction as *** 4H contained the erroneous labels“10 DAP(7 DAT),”which should have each read,“7 DAP(4 DAT).”To avoid any confusion and ensure consistency across our figures,we modified some of the Col-0 images in a corrected version of Figure 4H below to resemble the exact same Col-0 images as in Figure *** details of the changes are as follows:rotation(Col-0 Primed,all timepoints;Col-0 Triggered,3 DAP and 5 DAP;Col-0 Primed/triggered,3 DAP and 5 DAP),replacement(Col-0 Triggered,7 DAP),and different cropping(Col-0 Primed/triggered,7 DAP).

关键词： Figure metabolism Prime

Experimental Interactions Between Clay Minerals and Bacteria: A Review

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Pedosphere 2015年第6期25卷 799-810页

作者： Barbara mueller Clay Mineralogy Group Institute for Geotechnical EngineeringETH Zurich Plant Pathology Institute of Integrative BiologyETH Zurich

Interactions between microbes and minerals have the potential to contribute significantly to global cycles of various processes and serve as a link between the geosphere and life. Clays and clay minerals occur commonly in agriculturally utilized soils, are naturally grown underground （soil and rock） and are used in construction material. Clay minerals serve as natural, geological and technical barriers in geotechnics and environmental geotechnics. Bacteria in turn are ubiquitous in natural soils, subsoils and rocks and are in permanent contact with clay minerals. There are numerous ways in which bacteria can interact with clay minerals and alter them： dissolution, refinement and transformation, reduction of trace elements incorporated in the clay minerals and uptake of trace elements from these minerals, e.g., by the production of siderophores and chelators and enhancement or reduction of azisorbance of trace elements on clay minerals. In addition, bacteria can influence layer charge, cation exchange capacity （CEC）, exchangeable cations, Brunauer-Emmett-Teller surface, swelling and the rheological properties of clay minerals. The field of clay mineral-microorganism interaction is still wide open because of the large potential that the interactions of bacteria with clay minerals in soils and sediments may result in changes in clay mineral properties and behaviors. Fhrther detailed studies on all these tentative changes and underlying mechanisms as well as broad surveys of quantifications of extents and rates of clay mineral-microorganism interactions, especially in mimicking natural systems, are highly required. This review summarizes the influences of various bacteria on the properties of different clay minerals as determined experimentally using viable bacteria.

关键词： bacterium dissolution microbes reduction trace elements

Yield Improvement and Advanced Defect Control——Driving Forces for Modeling of Bulk Crystal Growth

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Journal of Rare Earths 2006年第Z1期24卷 200-207页

作者： Georg mueller Jochen Friedrich Crystal Growth Laboratory University Erlangen-Nürnberg (WW6) and Fraunhofer Institute of Integrated Systems and Device Technology (IISB) Martensstrasse 7 D-91058 Erlangen Germany Crystal Growth Laboratory University Erlangen-Nürnberg (WW6) and Fraunhofer Institute of Integrated Systems and Device Technology (IISB) Martensstrasse 7 D-91058 Erlangen Germany

Yield improvement and advanced defect control can be identified as the driving forces for modeling of industrial bulk crystal growth. Yield improvement is mainly achieved by upscaling of the whole crystal growth apparatus and increased processing windows with more tolerances for parameter variations. Advanced defect control means on one hand a reduction of the number of deficient crystal defects and on the other hand the formation of beneficial crystal defects with a uniform distribution and well defined concentrations in the whole crystal. This "defect engineering" relates to the whole crystal growth process as well as the following cooling and optional annealing processes, respectively. These topics were illustrated in the paper by examples of modeling and experimental results of bulk growth of silicon (Si), gallium arsenide (GaAs), indium phosphide (InP) and calcium fluoride (CaF2). These examples also involve the state of the art of modeling of the most important melt growth techniques, crystal pulling (Czochralski methods) and vertical gradient freeze (Bridgman-type methods).

关键词： yield improvement advanced defect control crystal growth

Does pressure cause liver cirrhosis? The sinusoidal pressure hypothesis

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World Journal of Gastroenterology 2016年第48期22卷 10482-10501页

作者： Sebastian mueller Department of Medicine and Center for Alcohol Research Salem Medical CenterUniversity of Heidelberg

Independent of their etiology, all chronic liver diseases ultimately lead to liver cirrhosis, which is a majorhealth problem worldwide. The underlying molecular mechanisms are still poorly understood and no efficient treatment strategies are available. This paper introduces the sinusoidal pressure hypothesis(SPH), which identifies an elevated sinusoidal pressure(SP) as cause of fibrosis. SPH has been mainly derived from recent studies on liver stiffness. So far, pressure changes have been exclusively seen as a consequ-ence of cirrhosis. According to the SPH, however, an elevated SP is the major upstream event that initiates fibrosis via biomechanic signaling by stretching of perisinusoidal cells such as hepatic stellate cells or fibroblasts(SPH part?Ⅰ: initiation). Fibrosis progression is determined by the degree and time of elevated SP. The SPH predicts that the degree of extracellular matrix eventually matches SP with critical thresholds > 12 mmH g and > 4 wk. Elevated arterial flow and final arterialization of the cirrhotic liver represents the self-perpetuating key event exposing the low-pressure-organ to pathologically high pressures(SPH part?Ⅱ: perpetuation). It also defines the "point of no return" where fibrosis progression becomes irreversible. The SPH is able to explain the macroscopic changes of cirrhotic livers and the uniform fibrotic response to various etiologies. It also opens up new views on the role of fat and disease mechanisms in other organs. The novel concept will hopefully stimulate the search for new treatment strategies.

关键词： liver stiffness Stretch force Sinusoidal pressure hypothesis liver cirrhosis Hepatic arterial buffer response biomechanics Arterialization Hepatic stellate cells Fibroblasts cellular and intercellular mechano-signaling

Pharmacological blockage of CYP2E1 and alcohol-mediated liver cancer: is the time ready?

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Chinese Journal of Cancer Research 2013年第3期25卷 269-271页

作者： Sebastian mueller Department of Medicine and Alcohol Research Center Salem Medical Center University of Heidelberg

Chronic alcohol consumption is a major risk factor worldwide affecting significantly both mortality and years of life lost （YLL）（1）. Ca. 5% of the western world show risky alcohol consumption and in some countries such as China a regional yearly increase of alcohol consumption of over 400% has been observed recently （2,3）. The liver is the major target organ of alcohol. According to the recently published ＇Global Burden of Disease Study 2010, liver cirrhosis and liver cancer are ranked at position 12 and 16 in the global deaths statistics （1）. Thus, in 2010, ca. 1 million people died from liver cirrhosis with one third directly attributable to alcohol. This is a considerable number when comparing with coronary heart disease with 7 million deaths and the leading cause of mortality. In central Europe, liver cirrhosis even ranks at the fourth position in YLL. Hepatocellular cancer （HCC） is now the most common fatal complication of patients with alcoholic cirrhosis. Moreover, it shows the second fastest increase of all tumors worldwide after kidney tumors and alcohol-associated HCC ranks on third position after HCCs caused by viral hepatitis B and C.

关键词： CYP Pharmacological blockage of CYP2E1 and alcohol-mediated liver cancer is the time ready time