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Dissecting the Native Architecture and Dynamics of Cyanobacterial Photosynthetic Machinery

Molecular Plant 2017年第11期10卷 1434-1448页

作者： Selene Casella Fang Huang david mason Guo-Yan Zhao Giles N. Johnson Conrad W. Mullineaux Lu-Ning Liu Institute of Integrative Biology University of Liverpool Crown Street Liverpool L69 7ZB UK Centre for Cell Imaging University of Liverpool Crown Street Liverpool L69 7ZB UK College of Life Science Shandong Normal University Jinan 250014 P. R. China School of Earth and Environmental Sciences University of Manchester Oxford Road Manchester M13 9PT UK School of Biological and Chemical Sciences Queen Mary University of London Mile End Road London E1 4NS UK

The structural dynamics and flexibility of cell membranes play fundamental roles in the functions of the cells, i.e., signaling, energy transduction, and physiological adaptation. The cyanobacterial thylakoid membrane represents a model membrane that can conduct both oxygenic photosynthesis and respiration simultaneously. In this study, we conducted direct visualization of the global organization and mobility of photosynthetic complexes in thylakoid membranes from a model cyanobacterium, Synechococcus elongatus PCC 7942, using high-resolution atomic force, confocal, and total internal reflection fluorescence microscopy. We visualized the native arrangement and dense packing of photosystem I （PSI）, photosystem II （PSlI）, and cytochrome （Cyt） befwithin thylakoid membranes at the molecular level. Furthermore, we func- tionally tagged PSI, PSlI, Cyt bef, and ATP synthase individually with fluorescent proteins, and revealed the heterogeneous distribution of these four photosynthetic complexes and determined their dynamic features within the crowding membrane environment using live-cell fluorescence imaging. We characterized red light-induced clustering localization and adjustable diffusion of photosynthetic complexes in thylakoid membranes, representative of the reorganization of photosynthetic apparatus in response to environmental changes. Understanding the organization and dynamics of photosynthetic membranes is essential for rational design and construction of artificial photosynthetic systems to undarpin bioenergy development. Knowledge of cyanobacterial thylakoid membranes could also be extended to other cell membranes, such as chloroplast and mitochondrial membranes.

关键词： cyanobacteria thylakoid membrane atomic force microscopy photosynthesis fluorescence imaging protein dynamics

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Diaphragmatic hernia after right donor and hepatectomy: a rare donor complication of partial hepatectomy for transplantation

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Hepatobiliary & Pancreatic Diseases International 2006年第3期5卷 459-461页

作者： Alan M.Hawxby david P.mason Andrew S.Klein Division of Transplant and Thoracic Surgery Department of Surgery The Johns Hopkins HospitalBaltimoreMDUSA

BACKGROUND: Because of the critical worldwide shortage of cadaveric organ donors, transplant professionals have increasingly turned to living donors. Partial hepatectomy for adult living donor liver transplantation has been performed since the late 1990s. Most often,the complications of living donor hepatectomy have been related to the biliary tract, specifically biliary leaks. METHODS: A 54-year-old man underwent donor right hepatectomy for living donor liver transplantation. Three years after liver donation he presented with upper abdominal pain and fullness. Radiographic workup revealed a diaphragmatic hernia of the right hemithorax. RESULTS: After thoracoscopic evaluation of the right hemithorax, diaphragmatic hernia was repaired. Currently the patient remains well several months after the repair with complete resolution of abdominal pain, normal chest X-ray examination demonstrating no recurrence of diaphragmatic hernia, and normal liver functions tests. CONCLUSIONS: Multiple complications of living donor liver transplantation have been described the transplant literature. Diaphragmatic hernia is a formerly-undescribed complication of right donor hepatectomy for transplantation.

关键词： living donor liver transplantation donor complications diaphragmatic hernia

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Modified Atmospheric Packaging and Its Effect on Postharvest Cannabis Quality

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American Journal of Plant Sciences 2024年第3期15卷 222-234页

作者： Luke L. MacLaughlin mason T. MacDonald Department of Plant Food and Environmental Sciences Faculty of Agriculture Dalhousie University Halifax NS Canada

Cannabis sativa L. is used as fiber, food, and medicine in several countries. Though it is illegal for recreational use in most of the world, there are some countries that have legalized production and sale. There is a lot of research on production of cannabis, but less so on storage technologies. Cannabis contains several high value compounds, such as cannabinoids and terpenoids, that are susceptible to degradation via light, temperature, and oxygen. Several studies have explored temperature and light, and industry has adjusted accordingly. However, less is known about oxygen-induced degradation. Biochemical studies have demonstrated oxidative degradation of high value compounds, and many producers use some form of modified atmospheric packaging (MAP) for storage. However, the efficacy of MAP is unclear. The objective of this paper is to review our current understanding of MAP in postharvest cannabis storage and identify avenues where additional research is needed.

关键词： Cannabinoids Cannabis sativa Marijuana Nitrogen Packaging Oxidation Postharvest Terpenoids THC

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The Impact of Opioid Drugs on Memory and Other Cognitive Functions: A Review

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Journal of Biosciences and Medicines 2024年第4期12卷 264-287页

作者： mason T. Bennett Yuliya Modna Dev Kumar Shah School of Biomedical Sciences Trinity Medical Sciences University Kingstown Saint Vincent and Grenadines Department of Physiology Trinity Medical Sciences University Kingstown Saint Vincent and Grenadines

Background and Purpose: Opioids, used for centuries to alleviate pain, have become a double-edged sword. While effective, they come with a host of adverse effects, including memory and cognition impairment. This review delves into the impact of opioid drugs on cognitive functions, explores underlying mechanisms, and investigates their prevalence in both medical care and illicit drug use. The ultimate goal is to find ways to mitigate their potential harm and address the ongoing opioid crisis. Methods: We sourced data from PubMed and Google Scholar, employing search combinations like “opioids,” “memory,” “cognition,” “amnesia,” “cognitive function,” “executive function,” and “inhibition.” Our focus was on English-language articles spanning from the inception of these databases up to the present. Results: The literature consistently reveals that opioid use, particularly at high doses, adversely affects memory and other cognitive functions. Longer deliberation times, impaired decision-making, impulsivity, and behavioral disorders are common consequences. Chronic high-dose opioid use is associated with conditions such as amnesiac syndrome (OAS), post-operative cognitive dysfunction (POCD), neonatal abstinence syndrome (NAS), depression, anxiety, sedation, and addiction. Alarming trends show increased opioid use over recent decades, amplifying the risk of these outcomes. Conclusion: Opioids cast a shadow over memory and cognitive function. These effects range from amnesiac effects, lessened cognitive function, depression, and more. Contributing factors include over-prescription, misuse, misinformation, and prohibition policies. Focusing on correct informational campaigns, removing punitive policies, and focusing on harm reduction strategies have been shown to lessen the abuse and use of opioids and thus helping to mitigate the adverse effects of these drugs. Further research into the impacts of opioids on cognitive abilities is also needed as they are well demonstrated in

关键词： Opioids Memory Cognition Pain

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Landscape of global urban environmental resistome and its association with local socioeconomic and medical status

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Science China(Life Sciences) 2024年第6期67卷 1292-1301页

作者： Jun Wu Yige Hu Michael H Perlin david Danko Jun Lu Manuela Oliveira Johannes Werner Maria M Zambrano Maria A Sierra Olayinka O Osuolale Paweł Łabaj Nicolás Rascovan Nur Hazlin Hazrin-Chong Soojin Jang Haruo Suzuki Marina Nieto-Caballero Bharath Prithiviraj Patrick K H Lee Agnieszka Chmielarczyk Anna Różańska Yongxiang Zhao Lan Wang Christopher E mason Tieliu Shi Center for Bioinformatics and Computational Biology and the Institute of Biomedical SciencesSchool of Life SciencesEast China Normal UniversityShanghai 200241China Department of Biology Program on Disease EvolutionUniversity of LouisvilleLouisville 40292USA Weill Cornell Medicine New York 10065USA The Bin Talal Bin Abdulaziz Alsaud Institute for Computational Biomedicine New York 10065USA Department of Pulmonary Medicine Shanghai Chest HospitalShanghai Jiao Tong UniversityShanghai 200025China i3S-Instituto de Investiga玢o e Inova玢o em Saúde Universidade do PortoPorto 4050-290Portugal Ipatimup-Instituto de Patologia e Imunologia Molecular da Universidade do Porto Porto 4200-465Portugal Departamento de Biologia Faculdade de CiênciasUniversidade do PortoPorto 4050-290Portugal High Performance and Cloud Computing Group Zentrum für Datenverarbeitung(ZDV)Eberhard Karls University of TübingenW鋍hterstra遝7672074TübingenGermany Corporación Corpogen Research Center Bogotá110311Colombia Applied Environmental Metagenomics and Infectious Diseases Research(AEMIDR) Department of Biological SciencesElizade UniversityIlara-Mokin 340271Nigeria Maopolska Centre of Biotechnology Jagiellonian UniversityKraków 30-005Poland Aix-Marseille Université Mediterranean Institute of OceanologyUniversitéde ToulonCNRSIRDUM 110Marseille 83041France Department of Biological Sciences and Biotechnology Faculty of Science and TechnologyUniversiti Kebangsaan Malaysia43600 UKM BangiSelangor Institut Pasteur Korea Seoul 13488Republic of Korea Faculty of Environment and Information Studies Keio UniversityFujisawaKanagawa 252-0882Japan University of Colorado at Boulder CivilEnvironmental and Architectural DepartmentBoulder 80303USA Brooklyn College of the City University of New York Brooklyn 11210USA School of Energy and Environment City University of Hong KongHong Kong 999077China Department of Microbiology Faculty of MedicineJagiellonian UniversityKraków 30-005Poland Biological Targeting Diagnosis and The

Antimicrobial resistance(AMR)poses a critical threat to global health and development,with environmental factors—particularly in urban areas—contributing significantly to the spread of antibiotic resistance genes(ARGs).However,most research to date has been conducted at a local level,leaving significant gaps in our understanding of the global status of antibiotic resistance in urban *** address this issue,we thoroughly analyzed a total of 86,213 ARGs detected within 4,728 metagenome samples,which were collected by the Meta SUB International Consortium involving diverse urban environments in 60 cities of 27 countries,utilizing a deep-learning based *** findings demonstrated the strong geographical specificity of urban environmental resistome,and their correlation with various local socioeconomic and medical *** also identified distinctive evolutionary patterns of ARG-related biosynthetic gene clusters(BGCs)across different countries,and discovered that the urban environment represents a rich source of novel *** study provides a comprehensive overview of the global urban environmental resistome,and fills a significant gap in our knowledge of large-scale urban antibiotic resistome analysis.

关键词： urban environment metagenome antibiotic resistance resistance diversity biosynthetic gene clusters

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The occurrence,inheritance,and segregation of complex genomic structural variation in synthetic Brassica napus

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The Crop Journal 2024年第2期12卷 515-528页

作者： Dandan Hu Jin Lu Wenwen Li Yinghui Yang Junxiong Xu Han Qin Hao Wang Yan Niu Huaiqi Zhang Qingqing Liu Xiangxiang He Annaliese S.mason JChris Pires Zhiyong Xiong Jun Zou National Key Laboratory of Crop Genetic Improvement College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhan 430070HubeiChina College of Agronomy Henan Agricultural UniversityZhengzhou 450002HenanChina Key Laboratory of Herbage and Endemic Crop Biotechnology Inner Mongolia UniversityHohhot 010070Inner MongoliaChina Plant Breeding Department University of BonnBonn 53115Germany Department of Soil and Crop Sciences Colorado State UniversityFort CollinsCO 80523USA

"Synthetic"allopolyploids recreated by interspecific hybridization play an important role in providing novel genomic variation for crop *** synthetic allopolyploids often undergo rapid genomic structural variation(SV).However,how such SV arises,is inherited and fixed,and how it affects important traits,has rarely been comprehensively and quantitively studied in advanced generation synthetic lines.A better understanding of these processes will aid breeders in knowing how to best utilize synthetic allopolyploids in breeding ***,we analyzed three genetic mapping populations(735 DH lines)derived from crosses between advanced synthetic and conventional Brassica napus(rapeseed)lines,using whole-genome sequencing to determine genome *** observed high tolerance of large structural variants,particularly toward the telomeres,and preferential selection for balanced homoeologous exchanges(duplication/deletion events between the A and C genomes resulting in retention of gene/chromosome dosage between homoeologous chromosome pairs),including stable events involving whole chromosomes("pseudoeuploidy").Given the experimental design(all three populations shared a common parent),we were able to observe that parental SV was regularly inherited,showed genetic hitchhiking effects on segregation,and was one of the major factors inducing adjacent novel and larger ***,novel SV occurred at low frequencies with no significant impacts on observed fertility and yield-related traits in the advanced generation synthetic ***,incorporating genome-wide SV in linkage mapping explained significantly more genetic variance for *** results provide a framework for detecting and understanding the occurrence and inheritance of genomic SV in breeding programs,and support the use of synthetic parents as an important source of novel trait variation.

关键词： Allopolyploid Large Genome structural variation Linkage mapping Synthetic polyploids Inheritance and segregation

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美国世纪的终结

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作者： (美)戴维·S. 梅森(david S. mason)

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力量之歌

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英语知识 2005年第11期 10-11页

作者：徐庭松（选译）徐觉庆（选译） david mason 中国对外经济贸易大学2002级 100029 江苏省大丰高级中学 224100 美国当代作家、诗人

[赏析]石头、纸张与剪刀各执一端．夜郎自大．各自夸吹自己的力量最强大。殊不知世上万物．相生相克．往往是“螳螂捕蝉．黄雀在后”，没有绝对的强者。而采天地间之精华．毓大自然之灵秀方为万物之是的我们人类（诗中的“you”实为人... 详细信息

[赏析]石头、纸张与剪刀各执一端．夜郎自大．各自夸吹自己的力量最强大。殊不知世上万物．相生相克．往往是“螳螂捕蝉．黄雀在后”，没有绝对的强者。而采天地间之精华．毓大自然之灵秀方为万物之是的我们人类（诗中的“you”实为人类的代表）却能运用自己的睿智．充分施展自己的才能、运筹谋略去驾驭其它事物．使其为我们所用；去克服一切困难．取得胜利。在此诗中．作者着力讴歌了人类的才智与伟大．昭示了人的力量最强大这一主题，表达了人类定能征服世界．主宰世界的美好愿望。

关键词：《力量之歌》高校大学英语英文诗歌双语阅读

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计算煤及煤半焦热值的公式——发展、检验及利用

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煤炭转化 1984年第3期 82-89页

作者： david M.mason ,KIRMN N.GANDHI ,李常康

通过对美国所有品位煤的775个样品数据组成的数据库进行回归分析,得到了一个从煤的元素分析计算其热值的新公式。使用该公式所得到的计算值与观察值之间的平均差异为零,其标准误差为129英国热量单位/磅(300千焦耳/公斤)。各种品位煤的... 详细信息

通过对美国所有品位煤的775个样品数据组成的数据库进行回归分析,得到了一个从煤的元素分析计算其热值的新公式。使用该公式所得到的计算值与观察值之间的平均差异为零,其标准误差为129英国热量单位/磅(300千焦耳/公斤)。各种品位煤的平均误差及标准误差都没有很大的差异。用这些数据也对杜隆、莫特——斯普纳、博伊、及格鲁梅尔——代维斯等公式进行了检验,但是得到的结果相当不好。新的公式已由其它试验室的数据和半焦的数据得到证明。对于由于矿物质的可变性,与品位无关的煤中有机质的可变性以及试验室测定的偏差所引起的数据偏差分配也作了估计。本文还叙述如何应用这个公式来检验试验室的工作状况,对于煤炭转化工艺的热平衡计算加以修正,以便得到最高的准确度。

关键词：英热单位观察值计算值品位中误差标准误差千焦耳次烟煤半焦

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Causes of Cretaceous subduction termination below South China and Borneo:Was the Proto-South China Sea underlain by an oceanic plateau?

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Geoscience Frontiers 2024年第2期15卷 100-124页

作者： Suzanna H.A.van de Lagemaat Licheng Cao Junaidi Asis Eldert L.Advokaat Paul R.D.mason Mark J.Dekkers Douwe J.J.van Hinsbergen Department of Earth Sciences Utrecht UniversityUtrechtthe Netherlands College of Marine Science and Technology China University of GeosciencesWuhanChina Faculty of Science and Natural Resources Universiti Malaysia SabahKota KinabaluMalaysia

The South China,Indochina,and Borneo margins surrounding the South China Sea contain long-lived arcs that became inactive at approximately 85 Ma,even though an embayment of oceanic crust(the‘Proto-South China Sea’)remained in the intervening *** oceanic crust eventually subducted in the Cenozoic below Borneo and the Cagayan arc,while the modern South China Sea opened in its *** investigate the enigmatic cessation of Mesozoic subduction below South China and Borneo,we studied a fragment of oceanic crust and overlying trench-fill sediments that accreted to NW Borneo during the final stages of Paleo-Pacific *** on radiolarian biostratigraphy of cherts overlying the pillow basalts and detrital zircon geochronology of the trench-fill,we constrained the minimum age of the oceanic crust during accretion to 40 *** shows that subduction cessation was not related to ridge *** analysis of pillow basalts revealed an enriched mid-ocean ridge basalt signature comparable to oceanic *** paleomagnetism,we show that this fragment of oceanic crust was not part of the Izanagi Plate but was part of a plate(the‘Pontus’Plate)separated from the Izanagi Plate by a subduction *** on the minimum 40 Ma age of the oceanic crust and its geochemistry,we suggest that Mesozoic subduction below South China and Borneo stopped when an oceanic plateau entered the trench,while the eastern plate margin with the Izanagi Plate remained *** show how our findings offer opportunities to restore plate configurations of the Panthalassa-Tethys junction region.

关键词： Proto-South China Sea Paleomagnetism Geochemistry Borneo Paleo-Pacific Izanagi Plate

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