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Interaction of piRNA-like sequences from the 3′-UTR of SARS-CoV-2 with mRNA regions

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Genes & Diseases 2023年第6期10卷 2282-2284页

作者： Laura Pérez-Campos Mayoral María Teresa Hernández-Huerta carlos Romero Díaz carlos alberto matias-cervantes Eduardo Pérez-Campos Mayoral Margarito Martínez Cruz Juan de Dios Ruiz-Rosado Edgar Gustavo Ramos Martínez Marco Antonio Sánchez Medina Eduardo Pérez-Campos Research Center Faculty of Medicine UNAM-UABJOAutonomous University“Benito Juárez”of Oaxaca(UABJO)Oaxaca 68020Mexico CONACyT Faculty of Medicine and Surgery.Autonomous University“Benito Juárez”of Oaxaca(UABJO)Oaxaca 68020Mexico National Technology of Mexico(TecNM)/IT Oaxaca Oaxaca de JuárezOaxaca 68030Mexico The Research Institute at Nationwide Children's Hospital Columbus 43205USA Facultad de Química Universidad Nacional Autónoma de MéxicoCoyoacán 04510Mexico

Piwi-interacting RNAs(piRNAs of 26-32 nt in length)regulate gene expression,epigenetics,and transcriptional and post-transcriptional processes.1 In humans,piRNAs are expressed in germline and somatic tissues,and generally have a uracil at the 5'-end(position+1),an adenine at the+10 position,and are 2'-0 methylated at the 3'-end.2 Onice piRNAs form the RNA-induced silencing complex(RISC)with PIWl proteins,they serve as guides to find their complementary sequences of the target mRNA,thus initiating their *** Wuhan patient's genome is approximately 265 nucleotides(nts)in its 3'-UTR;piRNAs-like sequences have been reported in this region.3 Our objective was to search,through bioinformatics,for mRNA sequences that were homologous to the reverse complementary of the previously reported piRNA-like sequences from the 3'-UTR of SARS-Cov-2,3 and identify the possible interaction between them.

关键词： sequences complementary initiating

Drug repurposing for COVID-19 using machine learning and mechanistic models of signal transduction circuits related to SARS-CoV-2 infection

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Signal Transduction and Targeted Therapy 2021年第1期6卷 11-13页

作者： carlos Loucera Marina Esteban-Medina Kinza Rian matias MFalco Joaquin Dopazo Maria Pena-Chilet Clinical Bioinformatics Area.Fundacion Progreso y Salud(FPS).CDCA Hospital Virgen del Rocio41013 SevillaSpain Computational Systems Medicine Institute of Biomedicine of Seville(IBIS)Hospital Virgen del Rocio41013 SevillaSpain Bioinformatics in Rare Diseases(BiER).Centro de Investigacion Biomedica en Red de Enfermedades Raras(CIBERER) FPSHospital Virgen del Rocio41013 SevillaSpain FPS/ELIXIR-es Hospital Virgen del RocioSevilla 42013Spain

Dear Editor,Drug repurposing is a convenient alternative when the need for new drugs in an unexpected medical scenario is urgent,as is the case of emerging *** recent years,approaches based on network biology have demonstrated to be superior to genecentric ones.1 Here,we use an innovative methodology that combines mechanistic modeling of the signal transduction circuits related to SARS-CoV-2 infection(the COVID-19 disease map)with a machine-learning algorithm that learns potential causal interactions between proteins,already targets of drugs,and specific signaling circuits in the COVID-19 disease map,to suggest potentially repurposable drugs.

关键词： signal network drugs

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Failure rate,return-to-sports and magnetic resonance imaging after meniscal repair:119 patients with 7 years mean follow up

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World Journal of Orthopedics 2023年第8期14卷 612-620页

作者： Juan Pablo Zicaro Nicolas Garrido Ignacio Garcia-Mansilla carlos Yacuzzi matias Costa-Paz Department of Knee Hospital Italiano de Buenos AiresBuenos Aires 1109Argentina

BACKGROUND One of the most important factors to consider in relation to meniscal repair is the high failure rate reported in the existing *** To evaluate failure rates,return to sports(RTS)rate,clinical outcomes and magnetic resonance image(MRI)evaluation after meniscus suture repair for longitudinal tears at a minimum *** We conducted a retrospective review of meniscal repairs between January 2004 and December *** patients treated for longitudinal tears associated or not with an anterior cruciate ligament reconstruction(ACL-R)were *** ramp lesions,radial and root tears,associated with multiligament injuries,tibial fracture and meniscal allograft transplants were *** details and failure rate,defined as symptomatic patients who underwent a revision surgery,were *** isolated bucket handle tears(BHTs)were usually associated with higher failure rates,we compared BHTs and not BHTs associated or not with an *** 2014,the inside-out technique using cannulas and suture needles with 2-0 Tycron began to *** addition,the number of stitches per repair was *** view of differences in surgical technique,we compared two different cohorts:before and after *** recorded the RTS according to the level achieved and the time to *** and IKDC scores were *** were studied with x-rays and MRI as standard postoperative *** One hundred and nineteen patients were included with a mean follow up of 7 years(SD:4.08).Overall failure rate was 20.3%at a mean 20.1 *** statistically significant differences were found when comparing failure for medial and lateral meniscal repair(22.7%and 15.3%,P=0.36),BHTs and not BHTs(26%and 17.6%,P=0.27),isolated or associated with an ACL-R(22.9%and 18%,P=0.47),or when comparing only BHTs associated with an ACL-R(23%and 27.7%,P=0.9)or *** comparing cohorts before and after 2014,we found a significant decrease in the overall f

关键词： Meniscus repair Bucket handle tears Meniscal suture Failure rate Longitudinal meniscus tears

Has platelet-rich plasma any role in partial tears of the anterior cruciate ligament?Prospective comparative study

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World Journal of Orthopedics 2021年第6期12卷 423-432页

作者： Juan Pablo Zicaro Ignacio Garcia-Mansilla Andres Zuain carlos Yacuzzi matias Costa-Paz Knee Division Hospital Italiano de Buenos AiresBuenos Aires 1181Argentina

BACKGROUND Partial tears of the anterior cruciate ligament(ACL)are frequent,and there is still considerable controversy surrounding their diagnosis,natural history and *** To examine patient-reported outcomes,physical examination and magnetic resonance imaging(MRI)findings of partial ACL tears treated with an intraarticular injection of platelet-rich plasma(PRP)compared to a control *** From January 2015 to November 2017,consecutive patients from a single institution with partial ACL tears treated nonoperatively were prospectively *** tears were defined as a positive Lachman test with a clear endpoint,a negative pivot-shift and less than 3 mm of side-to-side difference using the KT1000 *** in group 1 were treated with one intraarticular injection of PRP and specific physical therapy *** group consisted of patients treated only with physical *** analyzed data included physical examination,Tegner activity level and Lysholm and International Knee Documentation Committee *** MRI findings and at 6 mo follow-up were *** was defined as those patients with clinical instability at follow-up that required a subsequent ACL *** A total of 40 patients where included,21 treated with PRP injection with a mean follow-up of 25 mo[standard deviation(SD):3.6]and 19 in the control group with a mean follow-up of 25 mo(SD:5.68).Overall failure rate was 32.0%(n=13).No significant differences were observed between groups regarding subjective outcomes,return to sport and failure *** findings revealed an improvement in the ACL signal in half of the patients of both ***,we did not find a significant relationship between MRI findings and clinical *** Overall,95.0%of patients returned to sports at a mean follow-up of 25 *** time to return to sports was 4 *** of these patients,almost 30.0%in each group had a new episode of instability

关键词： Anterior cruciate ligament Partial tears Platelet-rich plasma Non-operative treatment

Revision anterior cruciate ligament reconstruction:Return to sports at a minimum 5-year follow-up

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World Journal of Orthopedics 2022年第9期13卷 812-824页

作者： Ezequiel Ortiz Juan Pablo Zicaro Ignacio Garcia Mansilla carlos Yacuzzi matias Costa-Paz Knee Division Hospital Italiano de Buenos AiresCiudad Autónoma 1181Buenos AiresArgentina

BACKGROUND Between 43%and 75%of patients who undergo primary anterior cruciate ligament(ACL)surgery return to sport ***,after a revision ACL reconstruction(ACLR)the rate of return to sports is variable.A few publications have reported returns to sports incidence between 56%to 100%after revision *** To determine return to sports and functional outcomes after a single-stage revision ACLR with a 5-year minimum follow-up at a single *** All patients operated between 2010 and 2016 with a minimum 5 years of followup were *** of sport,intensity,frequency,expectation,time to return to sport and failure rate were ***,Tegner and International Knee Documentation Committee forms were evaluated prior to the first ACLR surgery,at 6 mo after primary surgery and after revision ACLR at 5 years minimum of *** stability was tested with the knee arthrometer test(KT-1000 knee arthrometer,Medmetric Corp).RESULTS A total of 41 patients who underwent revision ACLR during that period of time were contacted and available for *** patient age at time of revision was 29 years old[interquartile range(IQR):24.0-36.0],and 39(95.0%)were *** median time from revision procedure to follow-up was 70 mo(IQR:58.0-81.0).Regarding return to sports,16(39.0%)were at the same level compared to preinjury period,and 25 patients(61.0%)returned at a lower ***-three percent categorized the sport as very important and 37.0%as *** patient(2.4%)failed with a recurrent ACL *** preoperative Lysholm and(SD)16]and 50(SD 11),*** follow-up,mean Lysholm and subjective International Knee Documentation Committee scores were 89(SD 8)and 82(SD 9)(P=0.0001).Mean Tegner score prior to primary ACLR was 6.7(SD 1.3),5.1(1.5 SD)prior to revision ACLR and 5.6(1.6 SD)at follow-up(P=0.0002).Overall,knee arthrometer test measurement showed an average of 6 mm(IQR:4.0-6.0)side-to-side difference of displacement pri

关键词： Return to sport Revision anterior cruciate ligament Arthroscopy Knee Functional outcome

Feature importance:Opening a soil-transmitted helminth machine learning model via SHAP

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Infectious Disease Modelling 2022年第1期7卷 262-276页

作者： carlos matias Scavuzzo Juan Manuel Scavuzzo Micaela Natalia Campero Melaku Anegagrie Aranzazu Amor Aramendia Agustín Benito Victoria Periago Instituto de Altos Estudios Espaciales Mario Gulich Univesidad Nacional de Cordoba-Comision Nacional de Actividades EspacialesArgentina Fundacion Mundo Sano MadridSpain National Centre for Tropical Medicine Institute of Health Carlos IIIMadridSpain Fundacion Mundo Sano Buenos AiresArgentina Consejo Nacional de Investigaciones Científicasy Tecnicas(CONICET) Buenos AiresArgentina

In the field of landscape epidemiology,the contribution of machine learning(ML)to modeling of epidemiological risk scenarios presents itself as a good *** study aims to break with the”black box”paradigm that underlies the application of automatic learning techniques by using SHAP to determine the contribution of each variable in ML models applied to geospatial health,using the prevalence of hookworms,intestinal parasites,in Ethiopia,where they are widely distributed;the country bears the third-highest burden of hookworm in Sub-Saharan *** software was used,a very popular ML model,to fit and analyze the *** Python SHAP library was used to understand the importance in the trained model,of the variables for *** description of the contribution of these variables on a particular prediction was obtained,using different types of plot *** results show that the ML models are superior to the classical statistical models;not only demonstrating similar results but also explaining,by using the SHAP package,the influence and interactions between the variables in the generated *** analysis provides information to help understand the epidemiological problem presented and provides a tool for similar studies.

关键词： Shap Shapley Machine learning Remote sensing Hookworm Ethiopia

Generation of lossy mode resonances(LMR)using perovskite nanofilms

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Opto-Electronic Advances 2024年第2期7卷 33-40页

作者： Dayron Armas Ignacio R.matias M.Carmen Lopez-Gonzalez carlos Ruiz Zamarreño Pablo Zubiate Ignacio del Villar Beatriz Romero Electrical Electronic and Communications Engineering DepartmentPublic University of NavarraPamplona 31006Spain Institute of Smart Cities(ISC) Public University of NavarraPamplona 31006Spain Experimental Science and Technology School Rey Juan Carlos UniversityMostoles 28933Spain

The results presented here show for the first time the experimental demonstration of the fabrication of lossy mode resonance(LMR) devices based on perovskite coatings deposited on planar waveguides. Perovskite thin films have been obtained by means of the spin coating technique and their presence was confirmed by ellipsometry, scanning electron microscopy, and X-ray diffraction testing. The LMRs can be generated in a wide wavelength range and the experimental results agree with the theoretical simulations. Overall, this study highlights the potential of perovskite thin films for the development of novel LMR-based devices that can be used for environmental monitoring, industrial sensing, and gas detection, among other applications.

关键词： perovskite thin films slab waveguide lossy mode resonance

GTP-bound Rab3A exhibits consecutive positive and negative roles during human sperm dense-core granule exocytosis

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Journal of Molecular Cell Biology 2014年第4期8卷 286-298页

作者： matias A. Bustos carlos M. Roggero Paola X. De la Iglesia Luis S. Mayorga Claudia N. Tomes Instituto de Histologia y Embriologia IHEM-CONICET Facultad de Ciencias Medicas Universidad Nacional de Cuyo Mendoza Argentina Department of Biophysics UT Southwestern Medical Center Dallas TX USA Servicio de Patologla Hospital Italiano de Buenos Aires Buenos Aires Argentina

Exocytosis of mam maUan sperm dense-core secretory granule relies on the same fusion molecules as all other secretory cells; one such molecule is the small GTPase Rab3A. Here, we report an in-depth biochemical characterization of the role of Rab3A in secretion by scrutinizingthe exocytotic response of streptolysin O-permeabiUzed human sperm to the acute application of a number of Rab3A-containing constructs and correlating the findings with those gathered with the endogenous protein. Full length, geranyigeranyiated, and active Rab3A elicited human sperm exocytosis perse. With Rab3A/Rab22A chimeric proteins, we demonstrated that the carboxy-terminal domain of the Rab3A molecule was necessary and sufficient to promote exocytosis, whereas its *** prevented calcium-triggered secretion. Interestingly, full length Rab3A halted secretion when added after the docking of the acrosome to the plasma membrane. This effect depended on the inability of Rab3A to hydrolyze GTP. We combined modified immunofluorescence and acrosomal staining protocols to detect membrane fusion and the activation status of endogenous Rab3 simultaneously in individual cells, and found that GTP hydrolysis on endogenous Rab3 was mandatory for fusion pores to open. Our findings contribute to establishing that Rab3 modulates regulated exocytosis differently depending on the nucleotide bound and the exocytosis stage under study.

关键词： Rab3 cycle GTP hydrolysis exocytosis acrosome calcium sperm

Behavioral study with Erythrina velutina fractions

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Asian Pacific Journal of Tropical Medicine 2009年第5期2卷 30-33页

作者： Silvania Maria Mendes Vasconcelos Natalia Martins Lima Lucas Siqueira de Lucena Alexandre Cesar Praxedes Rodrigues Edilberto Rocha Silveira carlos Clayton Torres Aguiar Paula matias Soares Francisca Clea Florenco de Sousa Glauce Socorro de Barros Viana Department of Physiology and Pharmacology Federal University of CearaRua Cel.Nunes de Melo 112760431-270FortalezaCearaBrazil Department of Organic Chemistry Federal University of CearaAv.Mister Hull60455-760FortalezaCearaBrazil

Objective:To study the behavioral effects of semi purified fraction prepared from the stem bark of Erythrina velutina on ***:Three chloroformic fractions(CA) at 50 or 100 mg/kg(CA1,CA2 and CA3) were tested in two behavioral tests;plus maze and open ***:In the plus maze test,it was observed a decrease in the number of entries in the closed arms(NECA) CA2 at both doses as compared to the control *** the open field test,CA2 and CA3 fractions decreased the number of squares crossed and the time of permanence on the bar,increased the number of falls at both doses in the rota rod *** CA2 fraction decreased the NECA,but this data did not characterize an anxiolytic *** was the consequence from decrease of locomotor activity(LA) observed in the open field test,that the decrease of LA and rearing,the number of falls and the decrease in time of permanence on the bar in rota rod test were observed after treatment with CA2 and CA3 at both doses,suggesting sedative ***:The present work demonstrated that CA2 and CA3 fractions have impairing effect on LA and motor coordination.

关键词： Erythrina relutina Fraction Locomotor activity Motor coordination