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Successful cetuximab rechallenge in metastatic colorectal cancer:A case report

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World Journal of Clinical Oncology 2024年第9期15卷 1232-1238页

作者： alexandra Guedes Sandra Silva Sandra Custódio Andreia Capela Department of Medical Oncology Centro Hospitalar Gaia/EspinhoVila Nova de Gaia 4434-502Portugal

BACKGROUND Metastatic colorectal cancer(mCRC)treatment has been evolving and increasingly driven by tumor biology and gene expression *** with epidermal growth factor receptor(EGFR)inhibitors(anti-EGFR)represents a promising strategy for patients with RAS wild-type(RAS-wt)mCRC and circulating tumor DNA has emerged as a potential selection ***,we report the case of a RAS-wt mCRC patient who had a successful response to cetuximab *** SUMMARY Our patient was diagnosed with stage IV RAS-wt,microsatellite-stable rectosigmoid junction *** was started on first-line treatment with FOLFIRI and cetuximab and achieved partial response,allowing for a left hepatectomy(R0),followed by post-operative chemotherapy and an anterior resection;progression-free survival(PFS)of 16 months was *** to hepatic and nodal relapse,second-line treatment with FOLFOX and bevacizumab was started with partial response;metastasectomy was performed(R0),achieving a PFS of 11 *** a 15 months anti-EGFR-free interval,FOLFIRI and cetuximab were reintroduced upon disease progression,again with partial response and a PFS of 16 *** extensive hepatic relapse,cetuximab was reintroduced and a marked clinical and analytical improvement was seen,after only one *** status was confirmed on circulating tumor *** patient’s overall survival exceeded 5 *** Our case provides real-world data to support cetuximab rechallenge in later lines of RAS-wt mCRC treatment.

关键词： Metastatic colorectal cancer RAS mutation RAS wild type Anti-epidermal growth factor receptor Cetuximab Rechallenge Case report

Direct anterior compared to posterior approach for hip hemiarthroplasty following femoral neck fractures

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World Journal of Orthopedics 2024年第6期15卷 605-607页

作者： Kevin A Wu alexandra N Krez Albert T Anastasio Department of Orthopaedic Surgery Duke University HospitalDurhamNC 27710United States Department of Orthopaedic Surgery Duke University School of MedicineDurhamNC 27710United States

The differences in complication rates between the direct anterior and posterior approaches for hemiarthroplasty in elderly patients with femoral neck fractures are not yet fully ***,a severe complication associated with increased mortality and often requiring additional surgery,may occur less frequently with the direct anterior approach compared to the posterior *** consideration of patient demographics is essential when planning the surgical *** research in this area should focus on robust randomized controlled trials involving elderly patients recovering from femoral neck fractures.

关键词： Direct anterior approach Posterior approach Hemiarthroplasty Femoral neck fractures Arthroplasty Dislocation Surgical technique

Development of an active-site titrant for SARS-CoV-2 main protease as an indispensable tool for evaluating enzyme kinetics

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Acta Pharmaceutica Sinica B 2024年第5期14卷 2349-2357页

作者： Rabea Voget Julian Breidenbach Tobias Claff alexandra Hingst Katharina Sylvester Christian Steinebach Lan Phuong Vu Renato H.Weiße Ulrike Bartz Norbert Sträter Christa E.Müller Michael Gütschow Pharmaceutical Institute Pharmaceutical&Medicinal ChemistryUniversity of BonnBonn 53121Germany Institute of Bioanalytical Chemistry Center for Biotechnology and BiomedicineLeipzig UniversityLeipzig 04103Germany Department of Natural Sciences University of Applied Sciences Bonn-Rhein-SiegRheinbach 53359Germany

A titrant for the SARS-CoV-2 main protease(M^(pro))was developed that enables,for the first time,the exact determination of the concentration of the enzymatically active M^(pro) by active-site *** covalent binding mode of the tetrapeptidic titrant was elucidated by the determination of the crystal structure of the enzyme–titrant *** fluorogenic substrates of M^(pro),including a prototypical,internally quenched Dabcyl-EDANS peptide,were compared in terms of solubility under typical assay *** exploiting the new titrant,key kinetic parameters for the M^(pro)-catalyzed cleavage of these substrates were determined.

关键词： COVID-19 SARS-CoV-2 Main protease Peptide nitriles Fluorogenic substrates Active-site titration X-ray crystallography Inner filter effect

Effect of vaccinations and school restrictions on the spread of COVID-19 in different age groups in Germany

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Infectious Disease Modelling 2024年第4期9卷 1250-1264页

作者： Christiane Dings Dominik Selzer Nicola Luigi Bragazzi Eva Mohler Markus Wenning Thomas Gehrke Ulf Richter alexandra Nonnenmacher Folke Brinkmann Tobias Rothoeft Michael Zemlin Thomas Lücke Thorsten Lehr Department of Clinical Pharmacy Saarland University66123SaarbrückenGermany Department of Child and Adolescent Psychiatry Saarland University Hospital66421HomburgGermany Medical Association Westfalen-Lippe48151MünsterGermany School of Education and Psychology Siegen University57072SiegenGermany University Children's Hospital Ruhr University44791BochumGermany University Children's Hospital Airway Research Center North(ARCN)German Center for Lung Research(DZL)LübeckGermany Department of General Pediatrics and Neonatology Saarland University Hospital66421HomburgGermany

With the emergence of SARS-CoV-2,various non-pharmaceutical interventions were adopted to control virus transmission,including school ***,the introduction of vaccines mitigated not only disease severity but also the spread of *** study leveraged an adapted SIR model and non-linear mixed-effects modeling to quantify the impact of remote learning,school holidays,the emergence of Variants of Concern(VOCs),and the role of vaccinations in controlling SARS-CoV-2 spread across 16 German federal states with an age-stratified *** highlight a significant inverse correlation(Spearman's ρ=0.92,p<0.001)between vaccination rates and peak incidence rates across all age ***-parameter estimation using the observed number of cases stratified by federal state and age allowed to assess the effects of school closure and holidays,considering adjustments for vaccinations and spread of VOCs over ***,modeling revealed significant(p<0.001)differences in the virus's spread among pre-school children(0-4),children(5-11),adolescents(12-17),adults(18-59),and the elderly(60+).The transition to remote learning emerged as a critical measure in significantly reducing infection rates among children and adolescents(p<0.001),whereas an increased infection risk was noted among the elderly during these periods,suggesting a shift in infection networks due to altered caregiving ***,during school holiday periods,infection rates among adolescents mirrored those observed when schools were *** exercises based on the model provided evidence that COVID-19 vaccinations might serve a dual purpose:they protect the vaccinated individuals and contribute to the broader community's safety.

关键词： COVID-19 Vaccination Non-pharmaceutical interventions Age Mathematical modeling

The Impact of Psychosocial Influences on Chronic Wound Healing

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Open Journal of Medical Psychology 2024年第3期13卷 39-57页

作者： Kelly Frasier Vivian Li Sara Christoforides Kathleen Daly alexandra Loperfito Karina Stech Milena Dragovic Nuvance Health/Vassar Brothers Medical Center Poughkeepsie NY USA Lake Erie College of Osteopathic Medicine New York NY USA Medical College of Georgia Augusta University Augusta GA USA Edward Via College of Osteopathic Medicine Blacksburg VA USA Lewis Katz School of Medicine Temple University Philadelphia PA USA College of Osteopathic Medicine California Health Sciences University Clovis CA USA

This comprehensive review explores the intricate dynamics between psychosocial factors and chronic wound healing processes, specifically focusing on prevalent conditions such as pressure ulcers, diabetic foot ulcers, and venous leg ulcers. By examining the roles of psychiatric conditions, including depression, anxiety, and post-traumatic stress disorder (PTSD), this paper illuminates how these factors intricately influence wound healing dynamics, including mechanisms of pain perception and inflammatory responses. Furthermore, we evaluate the effectiveness of integrated biopsychosocial interventions, which encompass a holistic approach to wound care, thereby enhancing healing outcomes for dermatology patients. Future studies should focus on investigating the specific psychosocial determinants that significantly influence wound healing, exploring novel therapeutic strategies, and implementing personalized interventions to meet the unique needs of each patient. Such endeavors hold promise in advancing the fields of psychodermatology and wound management, fostering a deeper understanding and application of psychosocial considerations in dermatological care.

关键词： Psychosocial Factors Chronic Wound Healing Biopsychosocial Interventions Psychiatric Conditions Dermatology Patients

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滑板公园进化正当时

商业周刊（中文版） 2024年第13期 34-38页

作者： alexandra Lange 程玺(译) 不详

在奥运会的推动下,这项街头朋克运动已经蔚为风潮,“滑板公园”这一配套设施也悄然兴起.滑板族的舞台,包括楼梯、栏杆、长凳、坡道、涵洞,乃至1970年代中期夏日旱季里那些干涸了的泳池。滑板公园往往隐匿于城市的角落:高架桥和立交桥下... 详细信息

在奥运会的推动下,这项街头朋克运动已经蔚为风潮,“滑板公园”这一配套设施也悄然兴起.滑板族的舞台,包括楼梯、栏杆、长凳、坡道、涵洞,乃至1970年代中期夏日旱季里那些干涸了的泳池。滑板公园往往隐匿于城市的角落:高架桥和立交桥下,通风管道和港口码头旁,抑或城市边陲的公园里。

关键词：港口码头通风管道高架桥和立交桥配套设施奥运会涵洞滑板

Utility of Preoperative Positron Emission Tomography (PET) in Localizing Perforator Vessels of Anterolateral Thigh Free Flap

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International Journal of Otolaryngology and Head & Neck Surgery 2024年第4期13卷 275-284页

作者： alexandra McMillan Sameer A. Alvi Zaid Al-Qurayshi Zachary Fleishacker Nitin A. Pagedar Marisa R. Buchakjian Department of Otolaryngology University of Iowa Hospitals and Clinics Iowa City IA USA Division of Otolaryngology-Head & Neck Surgery North Shore University Health System Evanston IL USA Pritzker School of Medicine The University of Chicago Chicago IL USA Holden Comprehensive Cancer Center University of Iowa Iowa City IA USA

Objectives: The anterolateral thigh (ALT) flap is often considered the workhorse in soft tissue reconstruction of head and neck defects secondary to trauma, infection, or tumor resection. Despite its many advantages, ALT flaps have been criticized due to variability in vasculature, which may result in inadequate or non-existent perforators. This retrospective study aims to investigate the utility and validity of positron emission tomography (PET) scan to identify the location and characteristics of perforators to the ALT flap. Methods: We performed a 10-year retrospective review of ALT flaps at our institution to identify patients with preoperative PET scans available for analysis. Three reviewers (attending physician, fellow, and resident) were asked to identify the number, location, and characteristics (myocutaneous versus septocutaneous) of ALT perforators on imaging, and reviewer agreement was assessed. Results were then compared to available operative data. Results: One hundred twenty-one patients were identified who underwent ALT free flap surgery. Thirty-eight preoperative PET scans were identified for review. At least one perforator was identified in 92.1% of scans. Agreement percentages regarding the number of perforators ranged from 53% - 61% whereas agreement regarding the location of a single perforator ranged from 79% - 90%. However, reviewers did not agree regarding the type of perforator, with agreement ranging from 34% - 53%. Poor agreement was observed when compared to intraoperative data, with the number of perforators ranging from 26% - 34% and the type of perforator 11% - 24%. These findings are likely due to insufficient data available in operative reports. Conclusion: Although initial studies suggest that PET scan shows promising evidence to support the capacity to preoperatively identify ALT perforators, future prospective studies are warranted to fully validate these findings.

关键词： Anterolateral Thigh Flaps Positron Emission Tomography Head and Neck Defects Perforator Mapping

Macroalgal deep genomics illuminate multiple paths to aquatic,photosynthetic multicellularity

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Molecular Plant 2024年第5期17卷 747-771页

作者： David R.Nelson alexandra Mystikou Ashish Jaiswal Cecilia Rad-Menendez Michael J.Preston Frederik De Boever Diana C.El Assal Sarah Daakour Michael W.Lomas Jean-Claude Twizere David H.Green William C.Ratcliff Kourosh Salehi-Ashtiani Division of Science and Math New York University Abu DhabiAbu DhabiUAE Center for Genomics and Systems Biology(CGSB) New York University Abu DhabiAbu DhabiUAE Biotechnology Research Center Technology Innovation InstitutePO Box 9639Masdar CityAbu DhabiUAE Culture Collection of Algae and Protozoa Scottish Association for Marine ScienceObanScotlandUK National Center for Marine Algae and Microbiota Bigelow Laboratory for Ocean SciencesEast BoothbayMEUSA Laboratory of Viral Interactomes GIGA InstituteUniversity of LiegeLiegeBelgium School of Biological Sciences Georgia Institute of TechnologyAtlantaGAUSA

Macroalgae are multicellular,aquatic autotrophs that play vital roles in global climate maintenance and have diverse applications in biotechnology and eco-engineering,which are directly linked to their multicellularity ***,their genomic diversity and the evolutionary mechanisms underlying multicellularity in these organisms remain *** this study,we sequenced 110 macroalgal genomes from diverse climates and phyla,and identified key genomic features that distinguish them from their microalgal *** for cell adhesion,extracellular matrix formation,cell polarity,transport,and cell differentiation distinguish macroalgae from microalgae across all three major phyla,constituting conserved and unique gene sets supporting multicellular *** genes show phylum-and climate-specific expansions that may facilitate niche ***,our study reveals genetic determinants of convergent and divergent evolutionary trajectories that have shaped morphological diversity in macroalgae and provides genome-wide frameworks to understand photosynthetic multicellular evolution in aquatic environments.

关键词： macroalgae multicellularity comparative genomics evolution adhesome endogenous viral elements

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带着孩子出差

科学新闻 2024年第4期 56-57页

作者： alexandra Hogan 倪伟波澳大利亚悉尼新南威尔士大学

我的职业梦想实现了。我收到一封电子邮件，通知我被任命为世界卫生组织（WHO）疫苗规划委员会成员。我很兴奋，在新冠病毒感染大流行期间，作为一名传染病建模师，我一直努力工作，想为全球疫苗政策作出贡献。但当认识到疫苗规划委员...

我的职业梦想实现了。我收到一封电子邮件，通知我被任命为世界卫生组织（WHO）疫苗规划委员会成员。我很兴奋，在新冠病毒感染大流行期间，作为一名传染病建模师，我一直努力工作，想为全球疫苗政策作出贡献。但当认识到疫苗规划委员会成员的职责时，我的心一沉。我需要从澳大利亚坐飞机24小时前往瑞士参加一个为期3天的会议。当时我正在休产假，6个月前我生了孩子，生活围绕着母乳喂养和全天候育儿。我怎么能大老远去瑞士呢？

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