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Photosynthetic response to a winter heatwave in leading and trailing edge populations of the intertidal red alga Corallina offi-cinalis(Rhodophyta)

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Acta Oceanologica Sinica 2024年第7期43卷 70-77页

作者： Regina Kolzenburg Federica Ragazzola Laura Tamburello Katy R.Nicastro Christopher D.McQuaid gerardo I.Zardi UmeåMarine Sciences Centre UmeåUniversity90571 NorrbynSweden University of Portsmouth Institute of Marine SciencePortsmouth PO49LYUK Stazione Zoologica Anton Dohrn Genova Marine CenterGenova 16126Italy Stazione Zoologica Anton Dohrn Sicily Marine CenterPalermo 90149Italy Department of Zoology and Entomology Rhodes UniversityMakhanda(Grahamstown)6139South Africa Centre of Marine Sciences University of AlgarveFaro 8005-139Portugal Laboratoire d’Océanologie et de Géosciences Universitéde LilleLille 59000France Universitéde Caen Normandie Laboratoire de Biologie des Organismes et des Ecosystèmes AquatiquesCaen 14032France

Marine heatwaves(MHWs)caused by anthropogenic climate change are becoming a key driver of change at the ecosystem *** conditions experienced by marine organisms across their distribution,particularly towards the equator,are likely to approach their physiological limits,resulting in extensive mortality and subsequent changes at the population *** at the margins of their species’distribution are thought to be more sensitive to climate-induced environmental pressures than central populations,but our understanding of variability in fitness-related physiological traits in trailing versus leading-edge populations is *** a laboratory simulation study,we tested whether two leading(Iceland)and two trailing(Spain)peripheral populations of the intertidal macroalga Corallina officinalis display different levels of maximum potential quantum efficiency(Fv/Fm)resilience to current and future winter MHWs *** study revealed that ongoing and future local winter MHWs will not negatively affect leading-edge populations of ***,which exhibited stable photosynthetic efficiency throughout the *** edge populations showed a positive though non-significant trend in photosynthetic efficiency throughout winter MHWs *** and equatorward populations did not produce significantly different results,with winter MHWs having no negative affect on Fv/Fm of either ***,we found no long-term regional or population-level influence of a winter MHWs on this species’photosynthetic ***,we found no statistically significant difference in thermal stress responses between leading and trailing ***,*** showed a trend towards higher stress responses in southern than northern *** responses rest on a variety of local population traits,they are difficult to predict based solely on thermal pressures.

关键词： marginal population coralline algae climate change ecophysiology photophysiology macroalgae Fv/Fm

The Effect of Water and Salt Stress on Paspalum dilatatum,a Constituent of Pampas Natural Grasslands

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Phyton-International Journal of Experimental Botany 2024年第8期93卷 2009-2018页

作者： Claudia A.Porcelli gerardo Rubio Flavio H.Gutiérrez Boem Raul S.Lavado Departamento de Química Facultad de AgronomíaUniversidad de Buenos AiresBuenos AiresC1417DSEArgentina Instituto de Investigaciones en Biociencias Agricolas y Ambientales(INBA) Facultad de AgronomíaUniversidad de Buenos AiresBuenos AiresC1417DSEArgentina

The effects of the salt stress on plant growth are usually increased by the water *** studied the impact of both stresses in simultaneous pulses of drought and salinity on Paspalum *** forage species is native to South America,spread in grasslands in many tropical,subtropical,and temperate areas of the world,and very common in grasslands of the Flooding Pampas of *** what happens in *** compared a pot experiment,a non-stressed control against water stress for a month(midpoint between field capacity and wilting point),and two saline stresses(moderate,6 d·Sm^(−1)and strong,12 d·Sm^(−1)),also for a *** biomass(green leaf;non-leaf green material,and dry material)and roots were harvested,weighed,and analyzed for nitrogen,phosphorus,and *** biomass of all components significantly decreased when both stresses were *** plus strong saline stress reduced by half the total biomasses,compared to the *** proportion of aerial biomass/root biomass ratio as well as aerial green component/dry materials ratio tend to decrease when subjected to both *** concentration in plants was not significantly affected,but phosphorus concentration increased in aerial biomass components,from 0.10 to 0.18 mg·kg^(−1)between the extreme treatments,but did not change in *** concentration in plants increased(i.e.,in green leave sodium(Na)increased from 0.27 to 2.01 mg·kg^(−1)between the extreme treatments),whereas other cations either did not change or decreased,affecting the ratios between *** performance allows us to infer that the Na accumulation of *** behaves in an intermediate range,compared to very tolerant to salts or non-salt tolerant species of the Paspalum *** agreement,when salts were applied in the form of a pulse,*** tolerated higher salinity than that found by other authors for the same species,using continuous salinity.

关键词： Dallis grass salinity drought sodium in plants phosphorus in plants potassium/sodium ratio

Influence of biomass burning on ozone levels in the Megalopolis of Central Mexico during the COVID-19 lockdown

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Journal of Environmental Sciences 2024年第9期143卷 99-115页

作者： Victor Almanza Luis gerardo Ruiz-Suárez Ricardo Torres-Jardón Agustín García-Reynoso Iván Y.Hernández-Paniagua Institute for Atmospheric Sciences and Climate Change National Autonomous University of MexicoCoyoacan 04510Mexico CityMexico

The massive reductions in anthropogenic emissions resulting from the COVID-19 lockdown provided a unique opportunity to evaluate the effect of mitigation measures aiming to abate air *** Mexico,the total lockdown period took place during the dry-hot season when biomass burning activity is ***,we investigate the role of biomass burning emissions on regional ozone levels in the Megalopolis of Central *** studied period covers the lockdown phases 2 and 3,and the first month of the New *** applied a factor separation technique and process analysis to estimate the pure and synergistic contributions of emission reductions under lockdown and that from biomass burning to daily ozone maximum concentrations in 7 metropolitan areas of different states in the *** results revealed that biomass burning plumes likely masked the effect of massive reductions from mobile emissions,impacted the PBL development during phase 3 and favored transition and mixed NO_(x)-limited and VOC-limited regional *** contributed to increased ozone production in the middle to lower PBL by changing the regional background levels which potentially could bias high ozone production efficiency *** the Megalopolis contribution to economic and societal development at national scale,our study suggests that ozone mitigation measures during the dry-hot season targeting mainly mobile emissions will likely be offset by biomass burning plumes.A regional and synergic policy aiming to control biomass burning would help to reduce the occurrence of high ozone levels in Central Mexico with the co-benefit of tackling short-lived climate pollutants.

关键词： COVID-19 Mexico Megalopolis Ozone Factor Separation Process Analysis

New paradigm of oral rehydration in patients affected by irritable bowel syndrome with chronic diarrhea

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World Journal of Gastrointestinal Pharmacology and Therapeutics 2024年第1期15卷 1-4页

作者： Marco Chiarelli Matilde De Simone gerardo Cioffi Ugo Cioffi Department of Emergency and Robotic Surgery A.Manzoni Hospital–ASST LeccoLecco 23900Italy Department of Surgery University of MilanVia F.Sforza 3520122 MilanoMilano 20122Italy Department of Sciences and Technologies UnisannioBenevento 82100Italy Department of Surgery University of MilanMilano 20122Italy

Irritable bowel syndrome with diarrhea is a very frequent clinical condition characterized by disabling intestinal *** disease presents with daily abdominal pain for at least 3 months related to defecation and associated with a change in the frequency of bowel movements and the shape of the *** surveys about this disease report a global prevalence of about 1.5%.A new amino acid based electrolyte solution has recently been commercialized for oral rehydration in *** is composed of water,electrolytes,and five selected amino acids that function as sodium co-transporters without containing *** recent years,some studies explored the effectiveness of the amino acid based electrolyte beverage in oncologic patients with gastrointestinal mucositis,reporting good ***,a prospective study to evaluate the clinical impact of the amino acid based medical beverage was conducted in patients with diarrhea predominant irritable bowel *** research was based on a real-life methodology minimizing the disruption of the routine *** hundred patients suffering from irritable bowel syndrome with diarrhea drank a solution based on selected amino acids twice a day for 2 *** enrolled patient completed the study and showed a significant response rate with regard to stool consistency and pain *** on this data,we can hypothesize that the amino acid based oral rehydration solution could be a valid tool in the treatment of patients affected by irritable bowel syndrome with *** is certainly necessary to plan highquality clinical trials comparing glucose based oral solutions and amino acid based solutions in patients with persisting *** in the near future all oral rehydration solutions will contain amino acids.

关键词： Diarrhea Irritable bowel syndrome Diarrhea-predominant irritable bowel syndrome Medical food Amino acid beverage formulation

Gut microbiota in preterm infants receiving breast milk or mixed feeding

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World Journal of Clinical Pediatrics 2024年第2期13卷 135-145页

作者： Sandra Gabriela Sánchez-González Bárbara Gabriela Cárdenas-del-Castillo Elvira Garza-González gerardo R Padilla-Rivas Isaías Rodríguez-Balderrama Consuelo Treviño-Garza Fernando Félix Montes-Tapia gerardo C Palacios-Saucedo Anthony Gutiérrez-Rodríguez Manuel Enrique de-la-O-Cavazos Department of Pediatrics Hospital Universitario“Dr.JoséEleuterio González”Universidad Autónoma de Nuevo LeónMonterrey 64460Nuevo LeónMéxico Departamento de Bioquímica y Medicina Molecular Universidad Autónoma de Nuevo LeónMonterrey 64460Nuevo LeónMéxico Department of Biochemistry and Molecular Medicine Universidad Autónoma de Nuevo LeónMonterrey 64460Nuevo LeónMéxico Department of Pediatric Surgery Hospital Universitario"Dr.JoséEleuterio González"Monterrey 64460Nuevo LeónMéxico

BACKGROUND Preterm birth is the leading cause of mortality in newborns,with very-low-birthweight infants usually experiencing several *** milk is considered the gold standard of nutrition,especially for preterm infants with delayed gut colonization,because it contains beneficial microorganisms,such as Lactobacilli and *** To analyze the gut microbiota of breastfed preterm infants with a birth weight of 1500 g or *** An observational study was performed on preterm infants with up to 36.6 wk of gestation and a birth weight of 1500 g or less,born at the University Hospital ***éEleuterio González at Monterrey,Mexico.A total of 40 preterm neonates were classified into breast milk feeding(BM)and mixed feeding(MF)groups(21 in the BM group and 19 in the MF group),from October 2017 to June *** samples were collected before they were introduced to any feeding *** full enteral feeding was achieved,the composition of the gut microbiota was analyzed using 16S rRNA gene *** variables were compared using Student’s t-test or using the Mann–Whitney U test for nonparametric ***,evenness,equitability,Margalef’s index,Fisher’s alpha,Chao-1 index,and Shannon’s diversity index were also *** No significant differences were observed at the genus level between the *** comparison indicated higher counts of Alphaproteobacteria and Betaproteobacteria in the initial compared to the final sample of the BM group(P<0.011).In addition,higher counts of Gammaproteobacteria were detected in the final than in the initial sample(P=0.040).According to the Margalef index,Fisher’s alpha,and Chao-1 index,a decrease in species richness from the initial to the final sample,regardless of the feeding type,was observed(P<0.050).The four predominant phyla were Bacteroidetes,Actinobacteria,Firmicutes,and Proteobacteria,with Proteobacteria being the most ***,no significant differences were

关键词： Gut microbiota Human milk Preterm infant Proteobacteria Very low birth weight 16S rRNA

Electron Emission of Graphene-Diamond Hybrid Films Using Paraffin Wax as Diamond Seeding Source

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Identification of Rhizobia Isolated from Nodules of Mexican Commercial Soybean Varieties

World Journal of Nano Science and Engineering（纳米科学与工程） 2012年第3期

作者： Deepak Varshney Chitturi Venkateswara Rao Frank Mendoza Kenneth Perez Maxime J.-F.Guinel Yasuyuki Ishikawa Brad R.Weiner gerardo morell

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American Journal of Plant Sciences 2024年第1期15卷 29-45页

作者： Cecilia Vázquez Rodríguez Lourdes Vital López Jesús gerardo García Olivares Homar Rene Gill Langarica Laboratorio de Biotecnología Vegetal Centro de Biotecnología Genómica Instituto Politécnico Nacional Reynosa México Carrera de Mantenimiento Industrial Universidad Tecnológica de Tamaulipas Norte Universidad Tecnológica Reynosa México

Rhizobia, crucial for nitrogen fixation in leguminous plants, play a vital role in soybean cultivation. This study, conducted in Mexico, a major soybean importer, aimed to identify bacteria from nodules of five soybean varieties in high-production regions. Multilocus sequence analysis (MLSA) was employed for enhanced species resolution. The study identified six Bradyrhizobium species: Bradyrhizobium japonicum USDA 110, Bradyrhizobium japonicum USDA 6, Bradyrhizobium elkanii USDA 76, Bradyrhizobium neotropicale, Bradyrhizobium lablabi, and Bradyrhizobium icense. Bradyrhizobium japonicum USDA 110 predominated in the soils, displaying symbiotic preference for the Huasteca 400 variety. However, phylogenetic analysis didn't reveal a clear association between strains, soil, and soybean variety. This research sheds light on the diversity of rhizobia in Mexican soybean cultivation, contributing to the understanding of symbiotic relationships in soybean production systems.

关键词： Nodules Soybean Housekeeping Genes MLSA Rhizobia Bradyrhizobium Nitrogen Fixation Symbiosis Phylogenetic Analysis

Efficacy and safety of abrocitinib in Chinese patients with moderate-to-severe atopic dermatitis: A post hoc analysis of the JADE REGIMEN phase 3 trial

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中华医学杂志(英文版) 2024年第16期137卷 1991-1992页

作者： Li Hang Cheng Hao Lu Qianjin Lai Wei Tao Xiaohua Encinas gerardo A. Vyas Shefali Wang Bo Luo Xin Li Shiqi Department of Dermatology Peking University First Hospital National Clinical Research Center for Skin and Immune Diseases Beijing China Department of Dermatology Sir Run Run Shaw Hospital Zhejiang University School of Medicine Hangzhou Zhejiang China Department of Dermatology The Second Xiangya Hospital of Central South University Changsha Hunan China Department of Dermatology The Third Affiliated Hospital of Sun Yat-sen University Guangzhou Guangdong China Department of Dermatology Zhejiang Provincial People’s Hospital Hangzhou Medical College Hangzhou Zhejiang China Pfizer S.A. de C.V. Mexico City Mexico Pfizer Inc. New York NY USA Pfizer Investment Co. Ltd Beijing China Pfizer (China) R& D Co. Ltd Shanghai China Pfizer PBG Shanghai China

Minimally Invasive Surgery for Necrotizing Pancreatitis: A Case Report

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Surgical Science 2024年第9期15卷 514-521页

作者： Néstor Veriel Méndez Huerta Luis Fernando Zorrilla Núñez Noelia Obregón Gaxiola César Jair Treviño Arizmendi gerardo Iván Muñoz Morales Marco Alejandro Arizmendi Villarreal Pamela Denisse Valdez Navarro Marco Antonio Hernández Guedea gerardo Enrique Muñoz Maldonado Service of General Surgery Hospital Universitario Dr. Jos Eleuterio Gonzlez Universidad Autnoma de Nuevo Len Monterrey Mxico

Introduction: Necrotizing pancreatitis management is complex and varies significantly among clinicians. Minimally invasive approaches like transgastric necrosectomy via laparoscopy are emerging as effective treatment options. This case report underscores the technique’s efficacy, clinical outcomes, and role in reducing complications. Clinical Observation: A 59-year-old male with a history of smoking and alcoholism presented with severe abdominal pain, nausea, and vomiting. Over the following weeks, he developed symptoms including asthenia, weight loss, and melena. Diagnostic workup revealed severe anemia and Balthazar E necrotizing pancreatitis, with significant intra-abdominal fluid collections and signs of infection. After initial conservative management, the patient underwent transgastric necrosectomy via laparoscopy due to deteriorating clinical status. The procedure involved removing necrotic tissue and performing a cystogastroanastomosis and jejunostomy. Postoperative care included fasting, parenteral nutrition, broad-spectrum antibiotics, and enzymatic replacement. The patient recovered well, with reduced necrotic tissue on follow-up imaging, and was discharged twelve days post-surgery [1]. Conclusion: Transgastric necrosectomy by laparoscopy is a valuable first-line surgical option for patients with symptomatic necrotizing pancreatitis, particularly in cases without prior interventions. This minimally invasive technique helps reduce major complications and mortality, offering a less invasive alternative to traditional open necrosectomy. The multidisciplinary approach and careful postoperative management were crucial to the patient’s favorable outcome. The case highlights the potential of transgastric necrosectomy as an effective treatment strategy in managing complex pancreatitis cases, including those with associated duodenal perforation [2].

关键词： Necrotizing Transgastric Pancreatic Necrosectomy Pancreatitis Case Report