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Queens remate despite traumatic mating in stingless bees

Current Zoology 2022年第1期68卷 81-92页

作者： Jamille Costa VEIGA Gustavo Rodrigo Sanches RUIZ Gislene Almeida CARVALHO-ZILSE Cristiano MENEZES felipe andres leon contrera Bee Biology and Ecology Lab Instituto de Ciencias BiologicasUniversidade Federal do ParaBelem66075-110 ParaBrazil Biodiversity and Ecosystem Services Research Group Instituto Tecnologico Vale-Desenvolvimento SustentavelBelem66055-090 ParaBrazil Ecology and Zoology of Invertebrates Lab Instituto de Ciencias BiologicasUniversidade Federal do ParaBelem66075-110 ParaBrazil Bee Research Group Instituto Nacional de Pesquisas da AmazoniaManaus69067-375 AmazonasBrazil Research and Development Embrapa Meio AmbienteJaguariuna13820-000 Sao PauloBrazil

Males can control female reproduction using genital plugs to impede access by *** social bees,ants,and wasps,plugging may involve traumatic mating,with females being *** stingless bees,chances are that plugs may promote ovarian activan,and are thought to ensure single mating—a general tendency among the social ***,understanding on relationships between mating plugs,traumatic mating,and mating systems in stingless bees remains *** address this,we(1)compared mated queens of 7 Neotropical species to understand the patterns of copulatory marks in females and(2)compared pre-and post-mating genitalia of males and females in Melipona fasciculata to depict plug functional *** revealed an unprecedented consequence of mating in stingless bees:the characteristic marks left by mating plugs on female abdomens and the inferences that can be made from *** our surprise,in 1 species *** we found that queens retain the plug long after mating,and may carry it for the rest of their *** the other 6 species retained the plug for only a short *** queens were only found in ***,whose multiple copulatory marks match previous findings of polyandry in this *** study shows that queens can remate,and suggests that male genital morphology may determine in part the time persistence of *** conclude that traumatic mating plugs do not fully prevent remating in stingless bees and that mating systems are not uniform in this ***,exceptional cases of facultative polyandry in social insects—for example,when mating plugs fail—may confirm a general tendency for single mating in close link with efficient mating plugs.

关键词： copulatory marks facultative polyandry genital morphology male harm sexual conflict

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Multi-omic study to unmask genes involved in prostate cancer development in amulti-case family

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Cancer Communications 2024年第3期44卷 443-447页

作者： Lucia Chica-Redecillas Sergio Cuenca-Lopez Eduardo andres-leon Laura Carmen Terron-Camero Blanca Cano-Gutierrez Jose Manuel Cozar Jose Antonio Lorente Fernando Vazquez-Alonso Luis Javier Martinez-Gonzalez Maria Jesus Alvarez-Cubero GENYO Centre for Genomics and Oncological ResearchPfizerUniversity of GranadaAndalusian Regional GovernmentPTS GranadaGranadaGranadaSpain Department of Biochemistry Molecular Biology III and ImmunologyFaculty of MedicineUniversity of GranadaPTS GranadaGranadaGranadaSpain Bioinformatics Unit Institute of Parasitology and Biomedicine“López-Neyra”Spanish National Research CouncilGranadaGranadaSpain Nursery Service.University Hospital Clínico San Cecilio GranadaGranadaSpain Urology Department University Hospital Virgen de las NievesGranadaGranadaSpain Legal Medicine and Toxicology Department Faculty of MedicineUniversity of GranadaPTS GranadaGranadaGranadaSpain Ibs Biosanitary Research InstituteGranadaGranadaSpain

Dear Editor,Hereditary prostate cancer(PC)comprises 5%-10%of all PC *** increased risk of PC in menwith a family his-tory of the disease is well known and is commonly caused by germline mutations,leading to clinical guidelines men-tioning various genes for identifying high-risk ***,the complex inheritance patterns involvingmul-tiple single nucleotide polymorphisms(SNPs)make it a genetically heterogeneous disease,with genetic testing still in its early stages.

关键词： cancer clinical cases

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NHC-catalysed[3+2]-asymmetric annulation between pyrazolin-4,5-diones and enals:synthesis of novel spirocyclic pyrazolone γ-butyrolactones and computational study of mechanism and stereoselectivity

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Organic Chemistry Frontiers 2022年第2期9卷 420-427页

作者： Marta Gil-Ordonez Alicia Maestro Pablo Ortega Pablo G.Jambrina Jose M.andres GIR-SintACat-Instituto Universitario CINQUIMA y Departamento de Química Orgánica Facultad de CienciasUniversidad de ValladolidPaseo Belén 747011 ValladolidSpain Departamento de Química Física University of Salamanca37008 SalamancaSpain

Chiral pyrazolones with a spirocyclic centre at the C4-position are widely found in a large family of medically relevant *** recent years,organocatalysis,particularly that performed with quiral N-heterocyclic carbenes(NHCs),has allowed the enantioselective synthesis of these spirocyclic compounds despite its inherent *** this work,we describe the fully diastereo-and highly enantioselective synthesis of novel spirocyclic pyrazolone γ-butyrolactones via NHC-catalysed[3+2]annulation reaction of enals and 1H-pyrazol-4,*** understand the catalytic mechanism and origin of stereoselectivity,electronic structure calculations were carried *** considering various pathways,we concluded that the stereoselectivity-determining step is the formation of the lactone that proceeds after addition of the NHC derived homoenolate to the electrophilic carbonyl group of pyrazolin-4,*** calculations predict that the free energy barrier is lower for the(RS)product,which is also the main product experimentally obtained.

关键词： synthesis spiro mechanism

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Simulation of a Walking Robot-E xoskeleton Movement on a Movable Base

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Journal of Artificial Intelligence and Technology 2021年第4期1卷 207-213页

作者： Sergey Jatsun Andrei Malchikov Andrey Yatsun AI Manji Khalil andres Santiago Martinez leon Department of Mechanics Mechatronics and RoboticsSouthwest State UniversityKursk 305040Russian Federation

The paper studies the problem of movement of a two-legged walking machine on a movable *** task is relevant for design rehabilitation and mechanotherapy complexes for people with impaired functions of the musculoskeletal system and presents a mathematical model that allows obtaining the kinematic and dynamic parameters of the movement of the executive units of the device under *** paper presents a method for planning the trajectory of exoskeleton links,its algorithmic and software *** paper proposes the structure of the automatic link position control system,which ensures the movement of the executive links along a given trajectory.A mathematical apparatus is proposed for studying the dynamics of the controlled movement of the links of the human-machine system of the *** article presents the results of *** on the movement of the low-limb exoskeleton leg in the one step mode and analyzes them.

关键词： walking robot mathematical simulation kinematic analysis trajectory planning

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主观疲劳量表与体重流失在足球训练负荷控制中的运用

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体育科学 2015年第5期35卷 62-65页

作者：刘鸿优 Jesus-Vicente Gimenez andres Alcolea leon 马德里理工大学身体锻炼与体育科学学院西班牙马德里28040 康科迪亚.艾尔布兰格足球俱乐部巴布罗.德.奥拉维戴大学体育学院西班牙塞维利亚41013

对"主观疲劳量表"进行改进,使其便于获得足球运动员的"训练前自觉疲劳程度",从而能获得"训练累积自觉疲劳程度";并引入运动员的"体重流失"和"体重流失比"来对运动员训练负荷进行监控。研究假设为"运动员在训练中的‘体重流失比’和‘累... 详细信息

对"主观疲劳量表"进行改进,使其便于获得足球运动员的"训练前自觉疲劳程度",从而能获得"训练累积自觉疲劳程度";并引入运动员的"体重流失"和"体重流失比"来对运动员训练负荷进行监控。研究假设为"运动员在训练中的‘体重流失比’和‘累积自觉疲劳程度’比‘体重流失’和‘训练后自觉疲劳程度’能更准确地反映运动员的训练负荷"。18名职业足球运动员(年龄23±3岁,身高177.2±6.2cm,体重72.9±7.2kg,BMI指数23.2±1.7)被选取为实验对象,对研究假设进行实验验证。结果显示,运动员在训练中的体重流失与训练后自觉疲劳程度不存在相关性(P>0.05),而与训练累积自觉疲劳程度呈现中度相关(P<0.05,R=0.49)。体重流失比与训练后自觉疲劳程度呈现低度相关(P<0.05,R=0.39),且与训练累积自觉疲劳程度呈现中度相关(P<0.01,R=0.52)。该结果证实了本研究的研究假设。

关键词：训练前自觉疲劳程度训练累积自觉疲劳程度体重流失比足球

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Active disturbance rejection control of nonlinear SISO Lagrangian systems via endogenous injections and exogenous feedback for trajectory tracking

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Control Theory and Technology 2021年第1期19卷 113-126页

作者： Hebertt Sira-Ramírez Mario andres Aguilar-Orduña Brian C.Góm ez-León Department of Electrical Engineering Mechatronics Section Cinvestav-IPNAv.IPN No.2508Col.San Pedro ZacatencoCP 07300 CDMX.Mexico

This article deals with a linear classical approach for the robust output reference trajectory tracking control of nonlinear SISO Lagrangian systems with a controllable(fAat)tangent linearization around an operating equilibrium *** endogenous injections and exogenous feedback(EIEF)approach is proposed,which is naturally equivalent to the generalized propor-tional integral control method and to a robust classical compensation *** is shown that the EIEF controller is also equivalent,within a frequency domain setting demanding respect for the separation principle,to the reduced order observer based active disturbance rejection control *** proposed linear control approach is robust with respect to total dis-turbances and,thus,it is ffective for the linear control of the nonlinear Lagrangian *** ilustrative nonlinear rotary crane Lagrangian system example,which is non-feedback linearizable,is presented along with digital computer simulations.

关键词： Active disturbance rejection control Lagrangian systems Robust control Flatness in Lagrangian systems

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Novel pharmacological therapy in type 2 diabetes mellitus with established cardiovascular disease: Current evidence

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World Journal of Diabetes 2019年第5期10卷 291-303页

作者： leonardo Pozo Fatimah Bello andres Suarez Francisco E Ochoa-Martinez Yamely Mendez Chelsea H Chang Salim Surani University of Texas Rio Grande Valley-Doctors Hospital at Renaissance Internal Medicine Residency Program Faculty of Medicine Universidad Autonoma de Nuevo LeonUniversity Hospital "Dr. José Eleuterio González" Faculty of Medicine "Dr. Alberto Romo Caballero" Universidad Autonoma de Tamaulipas Medical Critical Care Services Christus Spohn Hospitals-Corpus Christi

Cardiovascular diseases(CVDs) remain the leading cause of death in the world and in most developed countries. Patients with type 2 diabetes mellitus(T2DM)suffer from both microvascular and macrovascular diseases and therefore have higher rates of morbidity and mortality compared to those without T2DM. If current trends continue, the Center for Disease Control and Prevention estimates that 1 in 3 Americans will have T2DM by year 2050. As a consequence of the controversy surrounding rosiglitazone and the increasing prevalence of diabetes and CVDs, in 2008 the Food and Drug Administration(FDA) established new expectations for the evaluation of new antidiabetic agents, advising for pre and,in some cases, post-marketing data on major cardiovascular events. As a direct consequence, there has been a paradigm shift in new antidiabetic agents that has given birth to the recently published American Diabetes Association/European Association for the Study of Diabetes consensus statement recommending sodium-glucose cotransporter-2 inhibitors(SGLT2i) and glucagon like peptide-1 receptor agonists(GLP-1RA) in patients with T2DM and established CVD. As a result of over a decade of randomized placebo controlled cardiovascular outcome trials, the aforementioned drugs have received FDA approval for risk reduction of cardiovascular(CV) events in patients with T2DM and established CV ***2i have been shown to have a stronger benefit in patients with congestiveheart failure and diabetic kidney disease when compared to their GLP-1RA counterparts. These benefits are not withstanding additional considerations such as cost and the multiple FDA Black Box warnings. This topic is currently an emerging research area and this mini-review paper examines the role of these two novel classes of drugs in patients with T2DM with both confirmed, and at risk for, CVD.

关键词： Type 2 diabetes mellitus Glucagon-like-peptide 1 agonists Sodium-glucose cotransporter-2 inhibitor Cardiovascular disease Major adverse cardiovascular event

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Nanoengineered Shear-Thinning Hydrogel Barrier for Preventing Postoperative Abdominal Adhesions

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Nano-Micro Letters 2021年第12期13卷 452-467页

作者： Guillermo U.Ruiz-Esparza Xichi Wang Xingcai Zhang Sofia Jimenez-Vazquez Liliana Diaz-Gomez Anne-Marie Lavoie Samson Afewerki andres AFuentes-Baldemar Roberto Parra-Saldivar Nan Jiang Nasim Annabi Bahram Saleh Ali K.Yetisen Amir Sheikhi Thomas H.Jozefiak Su Ryon Shin Nianguo Dong Ali Khademhosseini Biomaterials Innovation Research Center Division of Engineering in MedicineDepartment of MedicineBrigham and Women’s HospitalHarvard Medical SchoolCambridgeMA 02139USA Division of Health Sciences and Technology Harvard University-Massachusetts Institute of TechnologyCambridgeMA 02139USA Department of Cardiovascular Surgery Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022People’s Republic of China School of Engineering and Applied Sciences Harvard UniversityCambridgeMA 02138USA School of Engineering and Science Tecnologico de MonterreyCampus MonterreyMonterreyNuevo Leon 64849Mexico School of Medicine and Health Science Campus GuadalajaraZapopanJalisco 45201Mexico West China School of Basic Medical Sciences and Forensic Medicine Sichuan UniversityChengdu 610041China Department of Chemical and Biomolecular Engineering University of CaliforniaLos AngelesLos AngelesCA 90095USA Department of Chemical Engineering Northeastern UniversityBostonMA 02115USA Department of Chemical Engineering Imperial College LondonLondon SW72AZUK Department of Chemical Engineering The Pennsylvania State UniversityUniversity ParkPA 16802USA Department of Biomedical Engineering The Pennsylvania State UniversityUniversity ParkPA 16802USA Terasaki Institute for Biomedical Innovation 11570 W Olympic BlvdLos AngelesCA 90024USA

More than 90%of surgical patients develop postoper-ative adhesions,and the incidence of hospital re-admissions can be as high as 20%.Current adhesion barriers present limited efficacy due to difficulties in application and incompatibility with minimally invasive *** solve thisclinical limitation,we developed an injectable and sprayable shear-thinning hydrogel barrier(STHB)composed of silicate nanoplatelets and poly(ethylene oxide).We optimized this technology to recover mechanical integrity after stress,enabling its delivery though inject-able and sprayable *** also demonstrated limited cell adhesion and cytotoxicity to STHB compositions in *** STHB was then tested in a rodent model of peritoneal injury to determine its e cacy preventing the formation of postoperative *** two weeks,the peritoneal adhesion index was used as a scoring method to determine the formation of postoperative adhesions,and STHB formulations presented superior e cacy compared to a commercially available adhesion *** and immunohistochemical examination showed reduced adhesion formation and minimal immune infiltration in STHB *** technology demonstrated increased e cacy,ease of use in complex anatomies,and compatibility with di erent delivery methods,providing a robust universal platform to prevent postoperative adhesions in a wide range of surgical interventions.

关键词： Postoperative adhesions Shear-thinning hydrogel Silicate nanoplatelets Nanotechnology Nanomedicine

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The action of ethanol on G protein. <i>In silico</i>and cellular/molecular evidences

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Advances in Bioscience and Biotechnology 2013年第5期4卷 665-673页

作者： Pamela Fernandez Jessica Moreno Claudio Barrientos Sergio A. Aguila Daniela leon Sebastián Ortiz Ramon Silva Francisco Rodriguez Maritza leonardi Violeta Morin Ximena Romo Departamento de Bioquimica y Biologia Molecular Facultad de Ciencias Biologicas Universidad de Concepción Concepcion Chile Departamento de Ciencias Biologicas Facultad de Ciencias Biologicas Universidad Andres Bello Sede Concepcion Talcahuano Chile Laboratorio de Virus Oncológicos en Reproducción BIOREN-CEGIN Universidad de La Frontera Temuco Chile Universidad Nacional Autonoma de Mexico Centro de Nanociencias y Nanotecnologia Ensenada Mexico

Ethanol (EtOH) enhances glycinergic currents in the central nervous system (CNS). Because evidence for an interaction between the α1 subunit of the glycine receptor (α1GlyR) and the G protein Gβγ subunit exists in vitro and because cAMP levels are known to increase in response to EtOH, we wanted to investigate the interaction between Gβγ and α1GlyR in response to EtOH treatment in HEK293 cells and to explore the possible sites of interaction between EtOH and the Gαs subunit. His pull-down assays in GlyR-His6-transfected HEK293 cells incubated with ethanol or propofol revealed that only EtOH treatment increased the binding of Gβγ heterodimers to α1GlyR. Using molecular modelling (protein structure prediction), was modelled the hGαs protein for the first time and validated this model by site-directed mutagenesis. By molecular docking, we identified some potential regions of interaction between hGαs and EtOH that are located on the SIII and SI regions of the Gαs. Therefore, we conclude that ethanol increases the interaction between α1GlyR and Gβγ in HEK293 cells, an effect that might be attributed to the interaction between EtOH and hGαs, which consequently stimulates hGαs.

关键词： Alcoholism Ethanol Glycine Receptor G Proteins Signals Transduction

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