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Functional lumen imaging probe use in a high-volume practice:Practical and technical implications

World Journal of Gastrointestinal Endoscopy 2024年第7期16卷 396-405页

作者： Yan Jiang raul vazquez-reyes Afrin Kamal Thomas Zikos George Triadafilopoulos John O Clarke Division of Gastroenterology and Hepatology Stanford University School of MedicineRedwoodCA 94063United States

BACKGROUND The functional lumen imaging probe(FLIP)is a Food and Drug Administration approved tool to aid the diagnosis and management of esophageal ***,widespread adoption of FLIP remains limited and its utility in highvolume practices remains *** To analyze large sample data on clinical use of FLIP and provide insight on several technical aspects when performing *** We conducted a retrospective comparative and descriptive analysis of FLIP procedures performed by a single provider at an academic medical *** was a total of 398 FLIP procedures *** medical records were reviewed and data regarding demographics and procedural details were *** tests,including chi-squared,t-test,and multivariable logistic and linear regression,were *** There was an increase in FLIP cases with each successive time period of 13 months(n=68,146,184,respectively)with notable rises specifically for indications of dysphagia and gastroesophageal reflux *** was a shift toward use of the longer FLIP balloon catheter for diagnostic purposes(overall 70.4%vs 29.6%,P<0.01).Many cases(42.8%)were performed in conjunction with other diagnostics/interventions,such as dilation and wireless pH probe *** were nearly equally performed with anesthesia vs moderate sedation(51.4%anesthesia),with no major *** who had anesthesia were less likely to have recurrent antegrade contractions[odds ratio(OR)=0.4,95%CI:0.3-0.8]and were also more likely to have absent contractility(OR=2.4,95%CI:1.3-CONCLUSION FLIP cases have increased in our practice with expanding indications for its *** limited normative data,providers should be aware of several potential technical issues,including the possible impact of sedation choice when assessing esophageal motility patterns.

关键词： Gastroenterology Endoscopy Functional lumen imaging probe Esophagus Motility

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Bivariate Analysis of Pollutants Monthly Maxima in Mexico City Using Extreme Value Distributions and Copula

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Journal of Environmental Protection 2024年第7期15卷 796-826页

作者： Juan A. vazquez-Morales Eliane R. Rodrigues Hortensia J. reyes-Cervantes Facultad de Ciencias Fsico-Matemticas Benemrita Universidad Autnoma de Puebla Puebla Mexico Instituto de Matemticas Universidad Nacional Autnoma de Mxico Mexico City Mexico

In the present work, we are interested in studying the joint distributions of pairs of the monthly maxima of the pollutants used by the environmental authorities in Mexico City to classify the air quality in the metropolitan area. In order to obtain the joint distributions a copula will be considered. Since we are analyzing the monthly maxima, the extreme value distributions of Weibull and Fréchet are taken into account. Using these two distributions as marginal distributions in the copula a Bayesian inference was made in order to estimate the parameters of both distributions and also the association parameters appearing in the copula model. The pollutants taken into account are ozone, nitrogen dioxide, sulphur dioxide, carbon monoxide, and particulate matter with diameters smaller than 10 and 2.5 microns obtained from the Mexico City monitoring network. The estimation was performed by taking samples of the parameters generated through a Markov chain Monte Carlo algorithm implemented using the software OpenBugs. Once the algorithm is implemented it is applied to the pairs of pollutants where one of the coordinates of the pair is ozone and the other varies on the set of the remaining pollutants. Depending on the pollutant and the region where they were collected, different results were obtained. Hence, in some cases we have that the best model is that where we have a Fréchet distribution as the marginal distribution for the measurements of both pollutants and in others the most suitable model is the one assuming a Fréchet for ozone and a Weibull for the other pollutant. Results show that, in the present case, the estimated association parameter is a good representation to the correlation parameters between the pair of pollutants analyzed. Additionally, it is a straightforward task to obtain these correlation parameters from the corresponding association parameters.

关键词： Copula Extreme Value Distribution Bayesian Inference Air Pollution Mexico City

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SENP7 overexpression protects cancer cells from oxygen and glucose deprivation and associates with poor prognosis in colon cancer

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Genes & Diseases 2022年第6期9卷 1419-1422页

作者： Francisco Gallardo-Chamizo Nieves Lara-Urena Juan F.Correa-vazquez Jose C.reyes Benoit R.Gauthier Mario Garcia-Dominguez Cell Dynamics and Signaling Department CABIMERCSICUniversidad de Sevilla-Universidad Pablo de Olavide-Junta de AndaluciaSeville 41092Spain Genome Biology Department CABIMERCSIC-Universidad de Sevilla-Universidad Pablo de Olavide-Junta de AndaluciaSeville 41092Spain Cell Therapy and Regeneration Department CABIMERCSIC-Universidad de Sevilla-Universidad Pablo de Olavide-Junta de AndaluciaSeville 41092Spain Centro de Investigacion Biomedica en Red de Diabetes y Enfermedades Metabo´licas Asociadas(CIBERDEM) Madrid 28029Spain

To the Editor,Constricted oxygen and glucose supplies are common conditions that healthy cells following a stress such an ischemic insult as well as cancer cells within a solid tumor need to overcome in order to *** conditions are a serious challenge for cells,which accurately measure the impact to make a life or death *** cancer cells,aberrant gene expression and/or protein regulation,frequently linked to appearing mutations,may confer selective advantages to survive under these adverse *** the past years,cumulative evidence indicates that protein modification by covalent attachment of the Small Ubiquitin-like MOdifier(SUMO)plays a role in cell survival after oxygen and glucose deprivation(OGD).

关键词： cancer deprivation colon

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Surfactant-free synthesis of metallic bismuth spheres by microwave-assisted solvothermal approach as a function of the power level

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Frontiers of Materials Science 2016年第4期10卷 394-404页

作者： Miriam ESTRADA FLORES Patricia SANTIAGO JACINTO Carmen M. REZA SAN GERMAN Luis RENDON vazquez raul BORJA URBY Nicolas CAYETANO CASTRO Instituto de Investigaciones en Materiales Circuito Exterior S/N Zona de Institutos Ciudad Universitaria C.P. 04510 Mexico D.F. Mexico Instituto de Fisica Circuito de la Investigaci6n Cientffica Edificio Marcos MoshinskyLaboratorio de Materiales Nanoestructurados Ciudad Universitaria C.P. 04510 Mexico D.F. Mexico Escuela Superior de Ingenierfa Qufmica e Industrias Extractivas Unidad Profesional Adolfo L6pez Mateos Edif. Z-5 2do. Piso Instituto Politecnico Nacional C.P. 07738 Mexico D.F. Mexico Centro de Nanociencias y Micro y Nanotecnologfas. Instituto Politecnico Nacional Av. Luis Enrique Erro S/NUnidad Profesional Adolfo Lopez Mateos Zacatenco Delegaci6n Gustavo A. Madero C.P. 07738 Mexico D.F. Mexico

In the present work, the synthesis of micro- and nano-sized spheres of metallic bismuth by microwave-assisted solvothermal method is reported. The synthesis method was carried out at different power levels and at a unique frequency of microwave irradiation. The sphere sizes were controlled by the microwave power level and the concentration of dissolved precursor. Structural and morphological characterization was performed by SEM, HRTEM, EELS and XRD. The results demonstrated that rhombohedral zero valent Bi spheres were synthesized after microwave radiation at 600 and 1200 W. However, if the power level is decreased to 120 W, a monoclinic phase of Bi203 is obtained with a flake-like morphology. In comparison with a conventional hydrothermal process, the microwave-assisted solvothermal approach provides many advantages such as shorter reaction time, optimum manipulation of morphologies and provides a specific chemical phase and avoids the mixture of structural phases and morphologies which is essential for further applications such as drug delivery or functionalization with organic materials, thanks to its biocompatibility.

关键词： microwave oven power level metallic bismuth spherical structures mechanism of formation electron energy loss spectroscopy (EELS)

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The Periaqueductal Gray and Its Extended Participation in Drug Addiction Phenomena

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Neuroscience Bulletin 2021年第10期37卷 1493-1509页

作者： Priscila vazquez-Leon Abraham Miranda-Paez Jesus Chavez-reyes Gonzalo Allende Paulino Barragan-Iglesias Bruno A.Marichal-Cancino Departamento de Fisiologia y Farmacologia Centro de Ciencias BasicasUniversidad Autonoma de AguascalientesCiudad Universitaria20131 AguascalientesAgs.Mexico Departamento de Fisiologia Escuela Nacional de Ciencias BiologicasInstituto Politecnico NacionalWilfrido Massieu esq.Manuel Stampa s/n Col.Nueva Industrial Vallejo07738 Gustavo A.MaderoMexico CityMexico

The periaqueductal gray(PAG)is a complex mesencephalic structure involved in the integration and execution of active and passive self-protective behaviors against imminent threats,such as immobility or flight from a *** activity is also associated with the integration of responses against physical discomfort(e.g.,anxiety,fear,pain,and disgust)which occurs prior an imminent attack,but also during withdrawal from drugs such as morphine and *** PAG sends and receives projections to and from other well-documented nuclei linked to the phenomenon of drug addiction including:(i)the ventral tegmental area;(ii)extended amygdala;(iii)medial prefrontal cortex;(iv)pontine nucleus;(v)bed nucleus of the stria terminalis;and(vi)*** models have suggested that the PAG contributes to the modulation of anxiety,fear,and nociception(all of which may produce physical discomfort)linked with chronic exposure to drugs of *** produced by the major pharmacological classes of drugs of abuse is mediated through actions that include participation of the *** support of this,there is evidence of functional,pharmacological,***/or genetic alterations in the PAG during the impulsive/compulsive intake or withdrawal from a *** to its small size,it is difficult to assess the anatomical participation of the PAG when using classical neuroimaging techniques,so its phys-iopathology in drug addiction has been underestimated and poorly *** this theoretical review,we discuss the involvement of the PAG in drug addiction mainly via its role as an integrator of responses to the physical discomfort associated with drug withdrawal.

关键词： Periaqueductal gray Reward circuit Antireward circuit Alcohol Caffeine Cannabis Opioids Stimulants

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Ventral Tegmental Area Neuronal Activity Correlates to Animals’ Behavioral Response to Chronic Methylphenidate Recorded from Adolescent SD Male Rats

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Journal of Behavioral and Brain Science 2014年第4期4卷 168-189页

作者： Zachary Jones Cruz reyes vazquez Nachum Dafny Department of Neurobiology and Anatomy University of Texas Medical School at Houston Houston USA Departmento de Fisiologia Divivion de Investigacion Facultad de Medicina Universidad Nacional Autonoma de Mexico Mexico City Mexico

Methylphenidate (MPD) is considered as the first-line pharmacotherapy to treat ADHD. More recently, MPD has also been used as a cognitive enhancement recreationally. Its therapeutic effects are not fully understood, nor are the long term effects of the drug on brain development. The ventral tegmental area (VTA) neuronal activity was recorded from freely behaving adolescent rats using a wireless recording system. Five groups were used: saline, 0.6, 2.5, 5.0 and 10.0 mg/kg MPD. The experiment lasted for 10 days. This study demonstrated that VTA neurons respond to MPD in a dose response characteristic and the same dose of MPD can cause both behavioral sensitization and behavioral tolerance. The neuronal unit activity was evaluated based on the animals’ behavioral activity following chronic MPD administration. The study showed that the animals’ behavioral response to different acute MPD of 0.6, 2.5 and 10.0 mg/kg doses responded in a dose response characteristics. Moreover, the same chronic dose of 0.6, 2.5, and 10.0 mg/kg MPD elicits in some animals’ behavioral sensitization and in some others behavioral tolerance. Therefore, the neuronal activity recorded from animals expressing behavioral sensitization was analyzed separately from the neuronal activity recorded from of behaviorally tolerant animals and it was found that the VTA units of the behaviorally sensitization animals responded significantly different to the drug than those VTA units recorded from animals expressing behavioral tolerance.

关键词： Ritalin Electrophysiology Neuronal Activity Behavior Ventral Tegmental Area

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Neoadjuvant treatment in non-small cell lung cancer:New perspectives with the incorporation of immunotherapy

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World Journal of Clinical Oncology 2022年第5期13卷 314-322页

作者： Carlos Aguado Luis Chara Mónica Antonanzas Jose Maria Matilla Gonzalez Unai Jiménez raul Hernanz Xabier Mielgo-Rubio Juan Carlos Trujillo-reyes Felipe Counago Department of Medical Oncology Hospital Clínico Universitario San CarlosMadrid 28040Spain Department of Medical Oncology Hospital Universitario de GuadalajaraGuadalajara 19002Spain Department of Thoracic Surgery Hospital Clínico Universitario de ValladolidValladolid 47005Spain Department of Thoracic Surgery Hospital Universitario CrucesBarakaldoBizkaia 48903Basque CountrySpain Department of Radiation Oncology Hospital Universitario Ramón y CajalMadrid 28034Spain Department of Medical Oncology Hospital Universitario Fundación AlcorcónAlcorcón 28922MadridSpain Department of Thoracic Surgery Hospital de la Santa Creu I Sant PauBarcelona 08029CataloniaSpain Department of Surgery Universitat Autonoma de BarcelonaBarcelona 08029CataloniaSpain Department of Radiation Oncology Hospital Universitario Quirónsalud MadridPozuelo de Alarcón 28223MadridSpain Department of Radiation Oncology Hospital La LuzMadrid 28003Spain Medicine Department School of Biomedical SciencesUniversidad Europea de MadridVillaviciosa de Odón 28670MadridSpain

The aim of neoadjuvant treatment in non-small cell lung cancer(NSCLC)is to eliminate micrometastatic disease to facilitate surgical *** chemotherapy(ChT)in localised NSCLC has numerous advantages over other therapeutic modalities and is considered standard treatment in resectable *** with immune checkpoint inhibitors(ICI)improves long-term survival in advanced disease and has a better toxicity profile than conventional *** immunotherapy agents(anti-PD1/PD-L1),administered with or without ChT,are currently being evaluated in the preoperative setting,with initial results showing better pathological response rates and more long-term ***,these drugs do not appear to increase the rate of severe adverse effects and/or postoperative ***,several questions still need to be resolved,including the identification of predictive biomarkers;comparative studies of immunotherapy alone vs combined treatment with ChT and/or radiotherapy;the optimal duration of treatment;the timing of surgery;the need for adjuvant treatment;appropriate radiologic evaluation and mediastinal staging;and the correlation between pathological response and survival *** we review the current evidence for immunotherapy from a multidisciplinary perspective and discuss current and future controversies.

关键词： Non-small cell lung cancer Neoadjuvant Immune checkpoint inhibitors Immunotherapy Anti-PD1 Anti-PD-L1 Complete pathological response

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Sharp Bounds for Fractional One-sided Operators

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Acta Mathematica Sinica,English Series 2016年第11期32卷 1255-1278页

作者： Maria Silvina RIVEROS raul Emilio VIDAL FaMAF-CIEM UNC-CONICET Ciudad Universitaria 5000 Cdrdoba Argentina

In this paper, we characterize the sharp boundedness of the one-sided fractional maximal function for one-weight and two-weight inequalities. Also a new two-weight testing condition for the one-sided fractional maximal function is introduced extending the work of Martin-reyes and de la Torre. Improving some extrapolation result for the one-sided case, we get weak sharp bounded estimates for one-sided fractional maximal function and weak and strong sharp bounded estimates for one-sided fractional integral.

关键词： One-sided fractional integrals one-sided maximal fractional function extrapolation Saw-yer weights

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XRD Characterization of Crystallinity of Human Tooth Enamel under Influence of Mechanical Grinding

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Materials Sciences and Applications 2015年第6期6卷 464-472页

作者： Jose reyes-Gasga Olga Koudriavtseva raul Herrera-Becerra Arturo Escobosa Instituto de Física UNAM Circuito de la Investigación s/n Ciudad Universitaria México D.F. México Dep. Ingeniería Eléctrica—SEES CINVESTAV—IPN México D.F. México

Crystallinity refers to the degree of structural order in a solid and has a big influence on hardness, density, transparency and diffusion. Even within materials that are crystalline completely, the degree of structural perfection can vary, reflecting size and elastic strain of many independent crystalline regions (grains or crystallites) of which these materials are composed. In this work it was attempted to reduce the crystallinity of human enamel using a technique of mechanical grinding (MG) with an ultra-compact FRITSCH Mini-Mill PULVERISETTE 23 machine. Variation in the crystallinity through the MG was monitored by X-ray diffraction (XRD) by broadening of the diffraction peak and examined using the Williamson-Hall plot method. Crystallites in human enamel are regularly arranged and oriented (in the [001] direction) perpendicularly to the interface of enameldentin junction. The results showed an anisotropic feature in crystallinity. Reduction of the crystallinity along the a-axis is due to the crystal strain rather than to the refinement of crystal, and vice versa along the c-axis. After 230 h of the MG, the length of crystallites decreased from 100 nm to 30 nm and width from 40 nm to 37 nm approximately.

关键词： Human Tooth Enamel Crystal Structure Mechanical Grinding X-Ray Diffraction Crystallites

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Higher cardiovascular risk scores and liver fibrosis risk estimated by biomarkers in patients with metabolic-dysfunction-associated fatty liver disease

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World Journal of Hepatology 2022年第8期14卷 1633-1642页

作者： Giovanni Alejandro Salgado Alvarez Samanta Mayanin Pinto Galvez Uriel Garcia Mora Ana Delfina Cano Contreras Cristina Durán Rosas Bryan Adrián Priego-Parra Arturo Triana Romero Mercedes Amieva Balmori Federico Roesch Dietlen Sophia Eugenia Martinez vazquez Ines Osvely Mendez Guerrero Luis Alberto Chi-Cervera Raúl Bernal reyes Leonardo Alberto Martinez Roriguez Maria Eugenia Icaza Chavez Jose Maria Remes Troche Instituto de Investigaciones Médico-biologicas Universidad VeracruzanaVeracruz 91700VeracruzMexico Department of Gastroenterología Instituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránMéxico 14080MéxicoMexico Clínica de Especialidades Gastrointestinales y Hepáticas Hospital Star MedicaMerida 97133YucatanMexico Department of Gastroenterologia Sociedad Española de BeneficenciaPachuca 42000HidalgoMexico Department of Gastroenterologia Clínica de Rehabilitación Metabólica Digestiva y HepáticaMexico 14080MexicoMexico Department of Gastroenterologia Hospital Star Médica de MéridaMerida 97133YucatanMexico

BACKGROUND The definition of metabolic-dysfunction-associated fatty liver disease(MAFLD)allows identification of metabolically complicated *** risk scores are related to cardiovascular risk(CVR)scores and could be useful for the identification of patients at risk of systemic *** To evaluate the relationship between MAFLD and CVR using the Framingham risk score in a group of Mexican *** Cross-sectional,observational and descriptive study carried out in a cohort of 585 volunteers in the state of Veracruz with MAFLD *** risk of liver fibrosis was calculated with aspartate aminotransferase-to-platelet ratio index,nonalcoholic fatty liver disease score and fibrosis-4,as well as with transient hepatic elastography with Fibroscan~?.The CVR was determined by the Framingham *** One hundred and twenty-five participants(21.4%)with MAFLD criteria were evaluated,average age 54.4 years,63.2%were women,body mass index 32.3 kg/m~*** Framingham CVR was high in 43 patients(33.9%).Transient elastography was performed in 55.2%of volunteers;39.1%with high CVR and predominance in advanced fibrosis(F3–F4).The logistic regression analysis showed that liver fibrosis,diabetes and hypertension independently increased *** One of every three patients with MAFLD had a high CVR,and in those with high fibrosis risk,the CVR risk was even greater.

关键词： Fatty liver Cardiovascular risk Hepatic steatosis Fibrosis Liver disease

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