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Global wood anatomical perspective on the onset of the Late Antique Little Ice Age (LALIA) in the mid-6th century CE

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Science Bulletin 2022年第22期67卷 2336-2344页

作者： Ulf Büntgen Alan Crivellaro Dominique Arseneault Mike Baillie David Barclay Mauro Bernabei Jarno Bontadi Gretel Boswijk David Brown Duncan A.Christie Olga V.Churakova Edward R.Cook Rosanne D’Arrigo Nicole Davi Jan Esper patrick fonti Ciara Greaves Rashit M.Hantemirov Malcolm K.Hughes Alexander V.Kirdyanov Paul J.Krusic Carlos Le Quesne Fredrik C.Ljungqvist Michael Mc.Cormick Vladimir S.Myglan Kurt Nicolussi Clive Oppenheimer Jonathan Palmer Chun Qin Frederick Reinig Matthew Salzer Markus Stoffel Max Torbenson Mirek Trnka Ricardo Villalba Nick Wiesenberg Greg Wiles Bao Yang Alma Piermattei Department of Geography University of CambridgeCambridge CB23ENUK Swiss Federal Research Institute(WSL) Birmensdorf 8903Switzerland Global Change Research Centre(CzechGlobe) Brno 60300Czech Republic Department of Geography Faculty of ScienceMasaryk UniversityBrno 61300Czech Republic Forest Biometrics Laboratory Faculty of Forestry“Stefan cel Mare”University of SuceavaSuceava 720229Romania Department of Biology Chemistry and GeographyUniversity of Quebec in RimouskiRimouski Qc.G5L 3A1Canada Archaeology&Palaeoecology School of Natural and Built EnvironmentQueen’s University BelfastBelfast BT71NNUK Department of Geology State University of New York at CortlandCortland NY 13045USA CNR-IBE Institute of BioEconomyNational Research CouncilTrento 38121Italy School of Environment The University of AucklandAuckland 1010New Zealand Laboratorio de Dendrocronología y Cambio Global Universidad Austral de ChileValdivia 509000Chile Center for Climate and Resilience Research(CR) Santiago 8370449Chile Cape Horn International Center(CHIC) Punta Arenas 6200000Chile Institute of Ecology and Geography Siberian Federal UniversityKrasnoyarsk 660041Russia Tree-Ring Laboratory Lamont-Doherty Earth ObservatoryColumbia UniversityPalisades NY 10964USA Department of Environmental Science William Paterson UniversityWayne NJ 07470USA Department of Geography Johannes Gutenberg UniversityMainz 55099Germany Institute of Plant and Animal Ecology Ural BranchRussian Academy of SciencesYekaterinburg 620144Russia Ural Institute of Humanities Ural Federal UniversityYekaterinburg 620002Russia Laboratory of Tree-Ring Research University of ArizonaTucson AZ 85721USA Sukachev Institute of Forest SB RAS Krasnoyarsk 660036Russia Department of Physical Geography Bolin Centre for Climate ResearchStockholm UniversityStockholm 10691Sweden Department of History Stockholm UniversityStockholm 10691Sweden Bolin Centre for Climate Research Stockholm UniversityStockholm 10691Sweden Swedish Collegium for Advanced Study

Linked to major volcanic eruptions around 536 and 540 CE, the onset of the Late Antique Little Ice Age has been described as the coldest period of the past two millennia. The exact timing and spatial extent of this exceptional cold phase are, however, still under debate because of the limited resolution and geographical distribution of the available proxy archives. Here, we use 106 wood anatomical thin sections from 23forest sites and 20 tree species in both hemispheres to search for cell-level fingerprints of ephemeral summer cooling between 530 and 550 CE. After cross-dating and double-staining, we identified 89Blue Rings(lack of cell wall lignification), nine Frost Rings(cell deformation and collapse), and 93Light Rings(reduced cell wall thickening) in the Northern Hemisphere. Our network reveals evidence for the strongest temperature depression between mid-July and early-August 536 CE across North America and Eurasia, whereas more localised cold spells occurred in the summers of 532, 540–43, and548 CE. The lack of anatomical signatures in the austral trees suggests limited incursion of stratospheric volcanic aerosol into the Southern Hemisphere extra-tropics, that any forcing was mitigated by atmosphere-ocean dynamical responses and/or concentrated outside the growing season, or a combination of factors. Our findings demonstrate the advantage of wood anatomical investigations over traditional dendrochronological measurements, provide a benchmark for Earth system models, support cross-disciplinary studies into the entanglements of climate and history, and question the relevance of global climate averages.

关键词： Blue Rings Climate extremes Dendrochronology Late Antiquity Tree rings Volcanic eruptions

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Radiofrequency ablation vs surgical resection in elderly patients with hepatocellular carcinoma in Milan criteria

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World Journal of Gastroenterology 2021年第18期27卷 2205-2218页

作者： Maria Conticchio Riccardo Inchingolo Antonella Delvecchio Letizia Laera Francesca Ratti Maximiliano Gelli Ferdinando Anelli Alexis Laurent Giulio Vitali Paolo Magistri Giacomo Assirati Emanuele Felli Taiga Wakabayashi patrick Pessaux Tullio Piardi Fabrizio di Benedetto Nicola de'Angelis Javier Briceño AntonioRampoldi RenèAdam Daniel Cherqui Luca Antonio Aldrighetti Riccardo Memeo Departement of Emergency and Trasplantation of Organs General Surgery Unit“M.Rubino”Policlinico di BariBari 70124Italy Interventional Radiology Unit "F.Miulli"General Regional HospitalAcquaviva delle Fonti 70021Italy Department of Emergency and Organ Transplantation General Surgery Unit“M.Rubino”University of BariCeglie Messapica 70124Italy Department of Oncology "F.Miulli"General Regional HospitalAcquaviva delle Fonti 70021Italy Department of Surgery Univ Vita Salute San RaffaeleMilan 20132Italy Department of Visceral and Oncological Surgery Gustave Roussy Cancer Campus Grand ParisVillejuif 94800France Unit of Oncologic and Pancreatic Surgery Hospital University Reina SofíaCordoba 14004Spain Department of Digestive and Hepatobiliary Surgery Henri Mondor University HospitalCreteil 94000France Department of Surgery University of Geneva HospitalsGeneva 44041Switzerland Hepato-Pancreato-Biliary Surgery and Liver Transplantation Unit University of Modena and Reggio EmiliaModena 41124Italy Institut de Recherche Contre les Cancers de l'Appareil Digestif Strasbourg 67000France Department of Surgery Keio University School of MedicineShinjuku-ku 160-8582Japan Hepato-Biliary and Pancreatic Surgical Unit Nouvel Hôpital CivilStrasbourg cedex 67091France Department of Hepatobiliary Pancreatic and Digestive SurgeryUniversity Hospital Robert Debréof ReimsReims 51100France Hepatobiliary and Pancreatic Surgery Unit General Surgery DepartementTroyes HospitalTroyes Zip or Postal CodeFrance University of Champagne-Ardenne Reims 51100France Unit of Minimally Invasive and Robotic Digestive Surgery "F.Miulli"General Regional HospitalAcquaviva delle Fonti 70021Italy Department of General and Digestive Surgery Reina Sofia University HospitalCordoba 14004Spain Interventional Radiology Unit Niguarda HospitalMilan 20132Italy 20132 Italy RenèAdam Hepatobiliary Center Hopital Paul BrousseVillejuif 94800France Unit of Hepato-Pancreatic-Biliary Surgery Univ Vita Salute San RaffaeleMilan 20132Italy Uni

BACKGROUND Surgical resection and radiofrequency ablation(RFA)represent two possible strategy in treatment of hepatocellular carcinoma(HCC)in Milan *** To evaluate short-and long-term outcome in elderly patients(>70 years)with HCC in Milan criteria,which underwent liver resection(LR)or *** The study included 594 patients with HCC in Milan criteria(429 in LR group and 165 in RFA group)managed in 10 European *** analysis was performed using the Kaplan-Meier method before and after propensity score matching(PSM)and Cox *** After PSM,we compared 136 patients in the LR group with 136 patients in the RFA *** survival at 1,3,and 5 years was 91%,80%,and 76%in the LR group and 97%,67%,and 41%in the RFA group respectively(P=0.001).Diseasefree survival at 1,3,and 5 years was 84%,60%and 44%for the LR group,and 63%,36%,and 25%for the RFA group(P=0.001).Postoperative Clavien-Dindo IIIIV complications were lower in the RFA group(1%vs 11%,P=0.001)in association with a shorter length of stay(2 d vs 7 d,P=0.001).In multivariate analysis,Model for End-stage Liver Disease(MELD)score(>10)[odds ratio(OR)=1.89],increased value of international normalized ratio(>1.3)(OR=1.60),treatment with radiofrequency(OR=1.46),and multiple nodules(OR=1.19)were independent predictors of a poor overall survival while a high MELD score(>10)(OR=1.51)and radiofrequency(OR=1.37)were independent factors associated with a higher recurrence *** Despite a longer length of stay and a higher rate of severe postoperative complications,surgery provided better results in long-term oncological outcomes as compared to ablation in elderly patients(>70 years)with HCC in Milan criteria.

关键词： Hepatocellular carcinoma Milan criteria Radiofrequency ablation Surgical resection Elderly patients Propensity score matching

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Liver resection vs radiofrequency ablation in single hepatocellular carcinoma of posterosuperior segments in elderly patients

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World Journal of Gastrointestinal Surgery 2021年第12期13卷 1696-1707页

作者： Antonella Delvecchio Riccardo Inchingolo Rita Laforgia Francesca Ratti Maximiliano Gelli Massimiliano Ferdinando Anelli Alexis Laurent Giulio Vitali Paolo Magistri Giacomo Assirati Emanuele Felli Taiga Wakabayashi patrick Pessaux Tullio Piardi Fabrizio di Benedetto Nicola de'Angelis Javier Briceño Antonio Rampoldi RenèAdam Daniel Cherqui Luca Antonio Aldrighetti Riccardo Memeo Unit of General Surgery "A.Perrino"HospitalCeglie Messapica 70124BariItaly Interventional Radiology Unit "F.Miulli"General Regional HospitalAcquaviva delle Fonti 75100Italy Unit of Laparoscopic Surgery University of BariBary 70124Italy Unit of Hepato-Pancreatic-Biliary Surgery University Vita Salute San RaffaeleMilan 20132Italy Department of Surgical Oncology Gustave Roussy Cancer Campus Grand ParisVillejuif 94800France of General Surgery Reina Sofia University HospitalCordoba 14004Spain Department of Digestive and Hepatobiliary Surgery Henry Mondor University HospitalCreteil 94000France Division of Transplantation Geneva University HospitalGeneva 44041Switzerland Hepato-Pancreato-Biliary Surgery and Liver Transplantation Unit University of Modena and Reggio EmiliaModena 42121Italy Department of Digestive Surgery Strasbourg University HospitalStrasbourg 67000France Department of Digestive and Hepatobiliary Surgery Robert DebrèUniversity HospitalReims 51100France Unit of Minimally Invasive and Robotic Digestive Surgery "F.Miulli"General Regional HospitalAcquaviva delle Fonti 70124Italy Interventional Radiology Unit Niguarda HospitalMilan 20162Italy Department of Hepatobiliary Surgery Paul Brousse University HospitalVillejuif 94800France Department of Hepatobiliary Surgery University Vita Salute San RaffaeleMilan 20132Italy Unit of Hepato-Pancreatic-Biliary Surgery "F.Miulli"General Regional HospitalAcquaviva delle Fonti 70124Italy

BACKGROUND Liver resection and radiofrequency ablation are considered curative options for hepatocellular *** choice between these techniques is still controversial especially in cases of hepatocellular carcinoma affecting posterosuperior segments in elderly *** To compare post-operative outcomes between liver resection and radiofrequency ablation in elderly with single hepatocellular carcinoma located in posterosuperior *** A retrospective multicentric study was performed enrolling 77 patients age≥70-years-old with single hepatocellular carcinoma(≤30 mm),located in posterosuperior segments(4a,7,8).Patients were divided into liver resection and radiofrequency ablation groups and preoperative,peri-operative and long-term outcomes were retrospectively analyzed and compared using a 1:1 propensity score *** After propensity score matching,twenty-six patients were included in each *** time and overall postoperative complications were higher in the resection group compared to the ablation group(165 min vs 20 min,P<0.01;54%vs 19%P=0.02 respectively).A median hospital stay was significantly longer in the resection group than in the ablation group(7.5 d vs 3 d,P<0.01).Ninety-day mortality was comparable between the two *** were no significant differences between resection and ablation group in terms of overall survival and disease free survival at 1,3,and 5 *** Radiofrequency ablation in posterosuperior segments in elderly is safe and feasible and ensures a short hospital stay,better quality of life and does not modify the overall and disease-free survival.

关键词： Elderly Hepatocellular carcinoma Posterosuperior segments Liver resection Radiofrequency ablation Multicentric study

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Peri-operative score for elderly patients with resectable hepatocellular carcinoma

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World Journal of Hepatology 2023年第12期15卷 1307-1314页

作者： Maria Conticchio Riccardo Inchingolo Antonella Delvecchio Francesca Ratti Maximiliano Gelli Massimiliano Ferdinando Anelli Alexis Laurent Giulio Cesare Vitali Paolo Magistri Giacomo Assirati Emanuele Felli Taiga Wakabayashi patrick Pessaux Tullio Piardi Fabrizio di Benedetto Nicola de'Angelis Javier Briceño Antonio Rampoldi RenèAdam Daniel Cherqui Luca Antonio Aldrighetti Riccardo Memeo Unit of Hepato-Pancreatic-Biliary Surgery “F.Miulli”Regional General HospitalAcquaviva Delle Fonti 70021Italy Interventional Radiology Unit Department of Radiology“F.Miulli”Regional General HospitalAcquaviva Delle Fonti 75100Italy Hepatobiliary Surgery Division IRCSS San Raffaele Scientific InstituteMilan 20132Italy Hepatobiliary Surgery Division Vita-Salute San Raffaele UniversityMilan 20132Italy Département de Chirurgie Viscérale Gustave Roussy Cancer Campus Grand ParisParis 94800France Unit of Oncologic and Pancreatic Surgery Hospital University Reina SofíaCordoba 14004Spain Department of Digestive and Hepatobiliary Surgery Assistance Publique-Hôpitaux de ParisCréteil 94000France Service of Abdominal Surgery Poliambulanza FoundationBrescia 25124Italy Hepato-Pancreato-Biliary Surgery and Liver Transplantation Unit University of Modena and Reggio EmiliaModena 41121Italy Department of Surgery Institut de Recherche Contre les Cancers de l'Appareil Digestif(IRCAD)Strasbourg 67000France Service de Chirurgie Viscérale et Digestive Nouvel Hôpital CivilUnitéINSERM U1110Strasbourg 67000France Department of Surgery Hôpital Robert DebréReims 51092France Assistance Publique-Hôpitaux de Paris Centre Hospitalier Universitaire Henri MondorParis 94000France Unit of Hepatobiliary Surgery and Liver Transplantation Hospital University Reina SofíaCordoba 14004Spain Interventional Radiology Unit Niguarda HospitalMilan 20162Italy Department of Surgery Centre HepatobiliaireHopital Paul BrousseParis 94000France

BACKGROUND Liver resection is the mainstay for a curative treatment for patients with resectable hepatocellular carcinoma(HCC),also in elderly *** this,the evaluation of patient condition,liver function and extent of disease remains a demanding process with the aim to reduce postoperative morbidity and *** To identify new perioperative risk factors that could be associated with higher 90-and 180-d mortality in elderly patients eligible for liver resection for HCC considering traditional perioperative risk scores and to develop a risk *** A multicentric,retrospective study was performed by reviewing the medical records of patients aged 70 years or older who electively underwent liver resection for HCC;several independent variables correlated with death from all causes at 90 and 180 d were *** coefficients of Cox regression proportional-hazards model for sixmonth mortality were rounded to the nearest integer to assign risk factors'weights and derive the scoring *** Multivariate analysis found variables(American Society of Anesthesiology score,high rate of comorbidities,Mayo end stage liver disease score and size of biggest lesion)that had independent correlations with increased 90-and 180-d mortality.A clinical risk score was developed with survival *** This score can aid in stratifying this population in order to assess who can benefit from surgical treatment in terms of postoperative mortality.

关键词： Hepatocellular carcinoma Score Laparoscopy Surgical resection Elderly patients Multivariate analysis

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