1,138 results on '"Guerrero-López A"'
Search Results
2. NeuroVoz: a Castillian Spanish corpus of parkinsonian speech
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Mendes-Laureano, Janaína, Gómez-García, Jorge A., Guerrero-López, Alejandro, Luque-Buzo, Elisa, Arias-Londoño, Julián D., Grandas-Pérez, Francisco J., and Godino-Llorente, Juan I.
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Electrical Engineering and Systems Science - Audio and Speech Processing ,Computer Science - Artificial Intelligence ,Computer Science - Computation and Language ,Computer Science - Sound - Abstract
The advancement of Parkinson's Disease (PD) diagnosis through speech analysis is hindered by a notable lack of publicly available, diverse language datasets, limiting the reproducibility and further exploration of existing research. In response to this gap, we introduce a comprehensive corpus from 108 native Castilian Spanish speakers, comprising 55 healthy controls and 53 individuals diagnosed with PD, all of whom were under pharmacological treatment and recorded in their medication-optimized state. This unique dataset features a wide array of speech tasks, including sustained phonation of the five Spanish vowels, diadochokinetic tests, 16 listen-and-repeat utterances, and free monologues. The dataset emphasizes accuracy and reliability through specialist manual transcriptions of the listen-and-repeat tasks and utilizes Whisper for automated monologue transcriptions, making it the most complete public corpus of Parkinsonian speech, and the first in Castillian Spanish. NeuroVoz is composed by 2,903 audio recordings averaging $26.88 \pm 3.35$ recordings per participant, offering a substantial resource for the scientific exploration of PD's impact on speech. This dataset has already underpinned several studies, achieving a benchmark accuracy of 89% in PD speech pattern identification, indicating marked speech alterations attributable to PD. Despite these advances, the broader challenge of conducting a language-agnostic, cross-corpora analysis of Parkinsonian speech patterns remains an open area for future research. This contribution not only fills a critical void in PD speech analysis resources but also sets a new standard for the global research community in leveraging speech as a diagnostic tool for neurodegenerative diseases., Comment: Preprint version
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- 2024
3. The gender gap in outpatient care for non-communicable diseases in Mexico between 2006 and 2022
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Serván-Mori, Edson, Heredia-Pi, Ileana, Guerrero-López, Carlos M., Jan, Stephen, Downey, Laura, Garcia-Díaz, Rocío, Nigenda, Gustavo, Orozco-Núñez, Emanuel, de la Cruz Muradás-Troitiño, María, Flamand, Laura, Norton, Robyn, and Lozano, Rafael
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- 2024
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4. A voice and speech corpus of patients who underwent upper airway surgery in pre- and post-operative states
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Hernández-García, Estefanía, Guerrero-López, Alejandro, Arias-Londoño, Julián D., and Godino-Llorente, Juan I.
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- 2024
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5. Gender and non-communicable diseases in Mexico: a political mapping and stakeholder analysis
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Orozco-Núñez, Emanuel, Ojeda-Arroyo, Enai, Cerecer-Ortiz, Nadia, Guerrero-López, Carlos M., Ramírez-Pérez, Beatriz M., Heredia-Pi, Ileana, Allen-Leigh, Betania, Feeny, Emma, and Serván-Mori, Edson
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- 2024
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6. Monocephalus dipygus in a 4-month-old mixed-breed puppy: clinical, radiographic, ultrasonographic, karyotyping and surgical intervention
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Lorena Elizabeth Chalco-Torres, Ana Elizabeth Guerrero López, and Mauro Nirchio Tursellino
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Congenital anomalies ,caudal duplication ,canine ,surgical resolution ,cytogenetics ,Veterinary medicine ,SF600-1100 - Abstract
Congenital anomalies are rare in veterinary medicine, and their aetiology, development, clinical presentation, and management remain poorly understood. This study documents a rare case of multiple congenital anomalies occurring simultaneously in a single individual. We present a comprehensive analysis of a 4-month-old mixed-breed puppy diagnosed with caudal duplication (monocephalus dipygus), integrating clinical, radiographic, ultrasonographic, cytogenetic findings, and surgical intervention. The puppy exhibited several external abnormalities, including a supernumerary limb, a single tail, two penises, and two distinct scrotal sacs. Radiographic examination revealed additional metatarsal and phalangeal bones in the supernumerary limb. Ultrasonography and exploratory laparotomy further identified two bladders, a single prostate, and bifurcated ureters, each connecting to a kidney. Cytogenetic analysis was conducted to investigate potential chromosomal abnormalities underlying these congenital anomalies, as we hypothesized that these malformations might be linked to chromosomal aberrations. The successful surgical removal of the supernumerary limb significantly improved the dog’s mobility. Notably, since each bladder was independently connected to a kidney, surgical intervention in the genitourinary system was avoided to prevent potential impairment of urinary function. This case highlights the complexity of congenital anomalies in canines and emphasizes the importance of a multidisciplinary approach to their diagnosis and management.
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- 2024
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7. The gender gap in outpatient care for non-communicable diseases in Mexico between 2006 and 2022
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Edson Serván-Mori, Ileana Heredia-Pi, Carlos M. Guerrero-López, Stephen Jan, Laura Downey, Rocío Garcia-Díaz, Gustavo Nigenda, Emanuel Orozco-Núñez, María de la Cruz Muradás-Troitiño, Laura Flamand, Robyn Norton, and Rafael Lozano
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Gender gap ,Health service utilization ,Segmentation ,Outpatient health services ,Non-communicable diseases ,Universal health coverage ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background Equitable health service utilization is key to health systems' optimal performance and universal health coverage. The evidence shows that men and women use health services differently. However, current analyses have failed to explore these differences in depth and investigate how such gender disparities vary by service type. This study examined the gender gap in the use of outpatient health services by Mexican adults with non-communicable diseases (NCDs) from 2006 to 2022. Methods A cross-sectional population-based analysis of data drawn from National Health and Nutrition Surveys of 2006, 2011–12, 2020, 2021, and 2022 was performed. Information was gathered from 300,878 Mexican adults aged 20 years and older who either had some form of public health insurance or were uninsured. We assessed the use of outpatient health services provided by qualified personnel for adults who reported having experienced an NCD and seeking outpatient care in the 2 weeks before the survey. Outpatient service utilization was disaggregated into four categories: non-use, use of public health services from providers not corresponding to the user’s health insurance, use of public health services from providers not corresponding to the user’s health insurance, and use of private services. This study reported the mean percentages (with 95% confidence intervals [95% CIs]) for each sociodemographic covariate associated with service utilization, disaggregated by gender. The percentages were reported for each survey year, the entire study period, the types of service use, and the reasons for non-use, according to the type of health problem. The gender gap in health service utilization was calculated using predictive margins by gender, type of disease, and survey year, and adjusted through a multinomial logistic regression model. Results Overall, we found that women were less likely to fall within the “non-use” category than men during the entire study period (21.8% vs. 27.8%, P
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- 2024
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8. A voice and speech corpus of patients who underwent upper airway surgery in pre- and post-operative states
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Estefanía Hernández-García, Alejandro Guerrero-López, Julián D. Arias-Londoño, and Juan I. Godino-Llorente
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Science - Abstract
Abstract Many research articles have explored the impact of surgical interventions on voice and speech evaluations, but advances are limited by the lack of publicly accessible datasets. To address this, a comprehensive corpus of 107 Spanish Castilian speakers was recorded, including control speakers and patients who underwent upper airway surgeries such as Tonsillectomy, Functional Endoscopic Sinus Surgery, and Septoplasty. The dataset contains 3,800 audio files, averaging 35.51 ± 5.91 recordings per patient. This resource enables systematic investigation of the effects of upper respiratory tract surgery on voice and speech. Previous studies using this corpus have shown no relevant changes in key acoustic parameters for sustained vowel phonation, consistent with initial hypotheses. However, the analysis of speech recordings, particularly nasalised segments, remains open for further research. Additionally, this dataset facilitates the study of the impact of upper airway surgery on speaker recognition and identification methods, and testing of anti-spoofing methodologies for improved robustness.
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- 2024
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9. Detecting train driveshaft damages using accelerometer signals and Differential Convolutional Neural Networks
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Galdo, Antía López, Guerrero-López, Alejandro, Olmos, Pablo M., and García, María Jesús Gómez
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Computer Science - Machine Learning ,Electrical Engineering and Systems Science - Signal Processing - Abstract
Railway axle maintenance is critical to avoid catastrophic failures. Nowadays, condition monitoring techniques are becoming more prominent in the industry to prevent enormous costs and damage to human lives. This paper proposes the development of a railway axle condition monitoring system based on advanced 2D-Convolutional Neural Network (CNN) architectures applied to time-frequency representations of vibration signals. For this purpose, several preprocessing steps and different types of Deep Learning (DL) and Machine Learning (ML) architectures are discussed to design an accurate classification system. The resultant system converts the railway axle vibration signals into time-frequency domain representations, i.e., spectrograms, and, thus, trains a two-dimensional CNN to classify them depending on their cracks. The results showed that the proposed approach outperforms several alternative methods tested. The CNN architecture has been tested in 3 different wheelset assemblies, achieving AUC scores of 0.93, 0.86, and 0.75 outperforming any other architecture and showing a high level of reliability when classifying 4 different levels of defects.
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- 2022
10. Gender and non-communicable diseases in Mexico: a political mapping and stakeholder analysis
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Emanuel Orozco-Núñez, Enai Ojeda-Arroyo, Nadia Cerecer-Ortiz, Carlos M. Guerrero-López, Beatriz M. Ramírez-Pérez, Ileana Heredia-Pi, Betania Allen-Leigh, Emma Feeny, and Edson Serván-Mori
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Gender ,Non-communicable diseases ,Stakeholder analysis ,Political mapping ,Health policy ,Social protection ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background Mexico and other low- and middle-income countries (LMICs) present a growing burden of non-communicable diseases (NCDs), with gender-differentiated risk factors and access to prevention, diagnosis and care. However, the political agenda in LMICs as it relates to health and gender is primarily focused on sexual and reproductive health rights and preventing violence against women. This research article analyses public policies related to gender and NCDs, identifying political challenges in the current response to women’s health needs, and opportunities to promote interventions that recognize the role of gender in NCDs and NCD care in Mexico. Methods We carried out a political mapping and stakeholder analysis during July–October of 2022, based on structured desk research and interviews with eighteen key stakeholders related to healthcare, gender and NCDs in Mexico. We used the PolicyMaker V5 software to identify obstacles and opportunities to promote interventions that recognize the role of gender in NCDs and NCD care, from the perspective of the political stakeholders interviewed. Results We found as a political obstacle that policies and stakeholders addressing NCDs do not take a gender perspective, while policies and stakeholders addressing gender equality do not adequately consider NCDs. The gendered social and economic aspects of the NCD burden are not widely understood, and the multi-sectoral approach needed to address these aspects is lacking. Economic obstacles show that budget cuts exacerbated by the pandemic are a significant obstacle to social protection mechanisms to support those caring for people living with NCDs. Conclusions Moving towards an effective, equity-promoting health and social protection system requires the government to adopt an intersectoral, gender-based approach to the prevention and control of NCDs and the burden of NCD care. Despite significant resource constraints, policy innovation may be possible given the willingness among some stakeholders to collaborate, particularly in the labour and legal sectors. However, care will be needed to ensure the implementation of new policies has a positive impact on both gender equity and health outcomes. Research on successful approaches in other contexts can help to identify relevant learnings for Mexico.
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- 2024
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11. Multimodal hierarchical Variational AutoEncoders with Factor Analysis latent space
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Guerrero-López, Alejandro, Sevilla-Salcedo, Carlos, Gómez-Verdejo, Vanessa, and Olmos, Pablo M.
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Computer Science - Machine Learning ,Computer Science - Artificial Intelligence - Abstract
Purpose: Handling heterogeneous and mixed data types has become increasingly critical with the exponential growth in real-world databases. While deep generative models attempt to merge diverse data views into a common latent space, they often sacrifice interpretability, flexibility, and modularity. This study proposes a novel method to address these limitations by combining Variational AutoEncoders (VAEs) with a Factor Analysis latent space (FA-VAE). Methods: The proposed FA-VAE method employs multiple VAEs to learn a private representation for each heterogeneous data view in a continuous latent space. Information is shared between views using a low-dimensional latent space, generated via a linear projection matrix. This modular design creates a hierarchical dependency between private and shared latent spaces, allowing for the flexible addition of new views and conditioning of pre-trained models. Results: The FA-VAE approach facilitates cross-generation of data from different domains and enables transfer learning between generative models. This allows for effective integration of information across diverse data views while preserving their distinct characteristics. Conclusions: By overcoming the limitations of existing methods, the FA-VAE provides a more interpretable, flexible, and modular solution for managing heterogeneous data types. It offers a pathway to more efficient and scalable data-handling strategies, enhancing the potential for cross-domain data synthesis and model transferability., Comment: 21 pages main work, 2 pages supplementary, 14 figures
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- 2022
12. Estudio molecular de Ehrlichiosis monocítica canina en la ciudad de Machala, Ecuador
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Stalin Yhovanny Correa–Vivanco, Ana Elizabeth Guerrero–López, Lorena Elizabeth Chalco–Torres, Robert Gustavo Sánchez Prado, and Mauro Nirchio–Tursellino
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Ehrlichia canis ,Rhipicephalus sanguineus ,caninos ,PCR ,inmunocromatografía ,Cattle ,SF191-275 ,Veterinary medicine ,SF600-1100 - Abstract
La Ehrlichiosis monocítica canina (EMC), una enfermedad emergente causada por Ehrlichia canis. Este patógeno se encuentra comúnmente en perros y otros canidos silvestres que actúan como reservorios naturales. La EMC es prevalente en regiones tropicales y subtropicales, por la presencia de la garrapata marrón del perro, Rhipicephalus sanguineus, que actúa como vector principal, siendo América Latina una región afectada. La enfermedad se manifiesta en tres etapas clínicas: aguda, subclínica y crónica, con síntomas como depresión, letargo, anorexia, hemorragias, y cambios en los parámetros hematológicos. El diagnóstico de E. canis puede ser a través de pruebas serológicas y moleculares, siendo la PCR dirigida al gen 16S rRNA considerada la técnica más fiable. El estudio se llevó a cabo en perros con sintomatología clínica en una clínica veterinaria en Ecuador. Se realizaron test de inmunocromatografia y reacción de cadena de polimerasa para identificar la presencia de E. canis. Se evidenció que las pruebas serológicas presentan una tasa de positividad superior, pero pueden generar falsos positivos debido al tiempo post infección. La PCR permite la detección temprana, incluso en fases subclínicas, ofreciendo la posibilidad de iniciar el tratamiento antes de la manifestación de síntomas. Se concluye destacando la importancia de realizar combinación de pruebas de laboratorio para un diagnóstico más fiable de la EMC en perros, identificando precozmente caninos como posibles fuentes de transmisión zoonótica de E. canis a los humanos.
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- 2024
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13. Securecipher: An instantaneous synchronization stream encryption system for insider threat data leakage protection
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Herrera Montano, Isabel, Ramos Diaz, Juan, García Aranda, José Javier, Molina-Cardín, Sergio, Guerrero López, Juan José, and de la Torre Díez, Isabel
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- 2024
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14. Exploring the power of photoplethysmogram matrix for atrial fibrillation detection with integrated explainability
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Fuster-Barceló, Caterina, Guerrero-López, Alejandro, Camara, Carmen, and Peris-Lopez, Pedro
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- 2024
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15. Factors related to academic performance in medical students
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Guerrero-López, José Benjamín, Monterrosas, Ana María, Reyes-Carmona, Carlos, Guerrero, Araceli Arrioja, Navarrete-Martínez, Andrea, Morones, Felipe Flores, Flores-Ramos, Mónica, and Hernández-Ruiz, Héctor Fernando
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- 2023
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16. NeuroVoz: a Castillian Spanish corpus of parkinsonian speech.
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Janaina Mendes-Laureano, Jorge Andrés Gómez García, Alejandro Guerrero-López, Elisa Luque-Buzo, Julián D. Arias-Londoño, Francisco J. Grandas-Pérez, and Juan Ignacio Godino-Llorente
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- 2024
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17. Descripción de un caso de fístula quilosa poslinfadenectomía axilar derecha
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Fernández Planas, Sara, Guerrero López, Raül, and Vallverdú Cartié, Helena
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- 2024
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18. Correction: Study protocol for pragmatic trials of Internet-delivered guided and unguided cognitive behavior therapy for treating depression and anxiety in university students of two Latin American countries: the Yo Puedo Sentirme Bien study
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Corina Benjet, Ronald C. Kessler, Alan E. Kazdin, Pim Cuijpers, Yesica Albor, Nayib Carrasco Tapias, Carlos C. Contreras-Ibáñez, Ma Socorro Durán González, Sarah M. Gildea, Noé González, José Benjamín Guerrero López, Alex Luedtke, Maria Elena Medina-Mora, Jorge Palacios, Derek Richards, Alicia Salamanca-Sanabria, and Nancy A. Sampson
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Medicine (General) ,R5-920 - Published
- 2024
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19. Assessment of metronomic chemotherapy–induced DNA damage in peripheral blood leukocytes from canine mammary cancer patients using the alkaline comet assay
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Lorena Elizabeth Chalco–Torres, José Atilio Aranguren–Méndez, Ana Elizabeth Guerrero–López, and Mauro Nirchio–Tursellino
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Mammary cancer ,metronomic chemotherapy (mCHT) ,cyclophosphamide ,genotoxicity ,mastectomy ,Cattle ,SF191-275 ,Veterinary medicine ,SF600-1100 - Abstract
Mammary cancer is a disease that requires effective treatments. Conventional chemotherapy, while effective, often causes harmful side effects. In contrast, metronomic chemotherapy (mCHT), which involves the continuous administration of low doses of anticancer drugs, is presented as a less aggressive alternative. In this study, the genotoxic impact of treatment with Cyclophosphamide and Meloxicam under the mCHT approach was evaluated in ten canine (Canis lupus familiaris) patients with mammary carcinoma after undergoing mastectomy. The patients underwent monthly evaluations, including chest X–rays, blood tests, and the alkaline comet assay to measure genotoxic effects of the antineoplastic drugs. These results were compared with those of a group that received conventional chemotherapy. The results revealed that patients treated with mCHT experienced significantly lower levels of DNA damage compared to those who received conventional chemotherapy. Furthermore, DNA damage decreased over time during mCHT, suggesting that dogs may have developed tolerance to the treatment. Blood parameters remained stable in the mCHT–treated group, and X–rays showed no signs of recurrence or metastasis. All dogs survived during the one–year follow–up without mammary cancer recurrence. It is concluded that mCHT with Cyclophosphamide appears to be a less aggressive therapeutic option with a more favorable genotoxic profile in the treatment of mammary cancer in dogs.
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- 2024
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20. Bayesian Sparse Factor Analysis with Kernelized Observations
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Sevilla-Salcedo, Carlos, Guerrero-López, Alejandro, Olmos, Pablo M., and Gómez-Verdejo, Vanessa
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Statistics - Machine Learning ,Computer Science - Machine Learning - Abstract
Multi-view problems can be faced with latent variable models since they are able to find low-dimensional projections that fairly capture the correlations among the multiple views that characterise each datum. On the other hand, high-dimensionality and non-linear issues are traditionally handled by kernel methods, inducing a (non)-linear function between the latent projection and the data itself. However, they usually come with scalability issues and exposition to overfitting. Here, we propose merging both approaches into single model so that we can exploit the best features of multi-view latent models and kernel methods and, moreover, overcome their limitations. In particular, we combine probabilistic factor analysis with what we refer to as kernelized observations, in which the model focuses on reconstructing not the data itself, but its relationship with other data points measured by a kernel function. This model can combine several types of views (kernelized or not), and it can handle heterogeneous data and work in semi-supervised settings. Additionally, by including adequate priors, it can provide compact solutions for the kernelized observations -- based in a automatic selection of Bayesian Relevance Vectors (RVs) -- and can include feature selection capabilities. Using several public databases, we demonstrate the potential of our approach (and its extensions) w.r.t. common multi-view learning models such as kernel canonical correlation analysis or manifold relevance determination., Comment: Article submitted to Artificial Intelligence Journal
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- 2020
21. Detecting train driveshaft damages using accelerometer signals and Differential Convolutional Neural Networks
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López Galdo, Antía, Guerrero-López, Alejandro, Olmos, Pablo M., and Gómez García, María Jesús
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- 2023
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22. Electroceuticals and Magnetoceuticals in Gastroenterology
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Gengqing Song, Roberta Sclocco, Amol Sharma, Ingrid Guerrero-López, and Braden Kuo
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neuromodulation ,vagal nerve stimulation ,magnetic neuromodulation ,acupuncture ,electroacupuncture ,gastrointestinal motility disorders ,Microbiology ,QR1-502 - Abstract
In the realm of gastroenterology, the inadequacy of current medical treatments for gastrointestinal (GI) motility disorders and inflammatory bowel disease (IBD), coupled with their potential side effects, necessitates novel therapeutic approaches. Neuromodulation, targeting the nervous system’s control of GI functions, emerges as a promising alternative. This review explores the promising effects of vagal nerve stimulation (VNS), magnetic neuromodulation, and acupuncture in managing these challenging conditions. VNS offers targeted modulation of GI motility and inflammation, presenting a potential solution for patients not fully relieved from traditional medications. Magnetic neuromodulation, through non-invasive means, aims to enhance neurophysiological processes, showing promise in improving GI function and reducing inflammation. Acupuncture and electroacupuncture, grounded in traditional medicine yet validated by modern science, exert comprehensive effects on GI physiology via neuro-immune-endocrine mechanisms, offering relief from motility and inflammatory symptoms. This review highlights the need for further research to refine these interventions, emphasizing their prospective role in advancing patient-specific management strategies for GI motility disorders and IBD, thus paving the way for a new therapeutic paradigm.
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- 2024
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23. A Gender-Based and Quasi-Experimental Study of the Catastrophic and Impoverishing Health-Care Expenditures in Mexican Households with Elderly Members, 2000-2020
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Edson Serván-Mori, Emanuel Orozco-Núñez, Carlos M. Guerrero-López, J. Jaime Miranda, Stephen Jan, Laura Downey, Emma Feeny, Ileana Heredia-Pi, Laura Flamand, Gustavo Nigenda, Robyn Norton, and Rafael Lozano
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Financial protection ,gender ,Mexico ,NCDs ,UHC ,Medicine (General) ,R5-920 ,Public aspects of medicine ,RA1-1270 - Abstract
ABSTRACTLatin America has experienced a rise in noncommunicable diseases (NCDs) which is having repercussions on the structuring of healthcare delivery and social protection for vulnerable populations. We examined catastrophic (CHE) and excessive (EHE, impoverishing and/or catastrophic) health care expenditures in Mexican households with and without elderly members (≥65 years), by gender of head of the households, during 2000–2020. We analyzed pooled cross-sectional data for 380,509 households from eleven rounds of the National Household Income and Expenditure Survey. Male- and female-headed households (MHHs and FHHs) were matched using propensity scores to control for gender bias in systematic differences regarding care-seeking (demand for healthcare) preferences. Adjusted probabilities of positive health expenditures, CHE and EHE were estimated using probit and two-stage probit models, respectively. Quintiles of EHE by state among FHHs with elderly members were also mapped. CHE and EHE were greater among FHHs than among MHHs (4.7% vs 3.9% and 5.5% vs 4.6%), and greater in FHHs with elderly members (5.8% vs 4.9% and 6.9% vs 5.8%). EHE in FHHs with elderly members varied geographically from 3.9% to 9.1%, being greater in less developed eastern, north-central and southeastern states. Compared with MHHs, FHHs face greater risks of CHE and EHE. This vulnerability is exacerbated in FHHs with elderly members, because of gender intersectional vulnerability. The present context, marked by a growing burden of NCDs and inequities amplified by COVID-19, makes key interlinkages across multiple Sustainable Development Goals (SDGs) apparent, and calls for urgent measures that strengthen social protection in health.
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- 2023
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24. Immune dysregulation, autoimmunity, and granule defects in gray platelet syndrome
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Collins, Janine H., Mayer, Louisa, and Guerrero Lopez, Jose Antonio
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- 2023
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25. Securecipher: An instantaneous synchronization stream encryption system for insider threat data leakage protection.
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Isabel Herrera Montano, Juan Ramos-Díaz, Jose Javier García Aranda, Sergio Molina-Cardín, Juan José Guerrero López, and Isabel de la Torre Díez
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- 2024
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26. Exploring the power of photoplethysmogram matrix for atrial fibrillation detection with integrated explainability.
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Caterina Fuster-Barceló, Alejandro Guerrero-López, Carmen Camara, and Pedro Peris-Lopez
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- 2024
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27. Automatic antibiotic resistance prediction in Klebsiella pneumoniae based on MALDI-TOF mass spectra
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Guerrero-López, Alejandro, Sevilla-Salcedo, Carlos, Candela, Ana, Hernández-García, Marta, Cercenado, Emilia, Olmos, Pablo M., Cantón, Rafael, Muñoz, Patricia, Gómez-Verdejo, Vanessa, del Campo, Rosa, and Rodríguez-Sánchez, Belén
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- 2023
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28. Shorter telomere length is associated with COVID-19 hospitalization and with persistence of radiographic lung abnormalities
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Miriam Retuerto, Ana Lledó, Beatriz Fernandez-Varas, Rosa Guerrero-López, Alicia Usategui, Antonio Lalueza, Rocío García-García, Esther Mancebo, Estela Paz-Artal, Leandro Sastre, Rosario Perona, and José L. Pablos
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SARS-CoV-2 ,COVID-19 ,Telomere length ,Pulmonary fibrosis ,Immunologic diseases. Allergy ,RC581-607 ,Geriatrics ,RC952-954.6 - Abstract
Abstract Background Age and comorbidity are the main determinants of COVID-19 outcome. Shorter leukocyte telomere length (TL), a hallmark of biological aging, has been associated with worse COVID-19 outcomes. We sought to determine TL in patients with severe COVID-19 requiring hospitalization to analyze whether clinical outcomes and post-COVID-19 manifestations are associated with shorter TL. Results We analyzed 251 patients with PCR-confirmed COVID-19, hospitalized in the first months of the pandemics. We determined TL in PBL at admission by quantitative-PCR (qPCR) analysis in patients. A healthy cohort from the same area with a similar age range (n = 169) was used to calculate TL Z-scores. After hospital discharge, 144 COVID-19 survivors were followed-up for persistent COVID-19 manifestations. A second TL determination was performed in a smaller group of 63 patients 1 year later and compared with baseline TL. Hospitalized COVID-19 patients had a decreased baseline age-adjusted TL Z-score compared to the reference group. No differences in Z-scores were observed in patients with different COVID-19 outcomes, classified as WHO ordinal scores. In 144 patients, followed for a median of 8 months, post-COVID manifestations were not associated to differences in TL. Persistence of lung radiographic abnormalities was associated with shorter baseline TL. In patients with a second TL determination, further telomere shortening (TS) was observed in 35% and telomere lengthening in 49%. Patients with further TS had suffered a more severe disease. Conclusion Shorter TL is associated with COVID-19 hospitalization but not with hospital clinical outcomes nor with persistent post-COVID-19 manifestations. Delayed resolution of radiographic lung abnormalities was also associated with shorter TL.
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- 2022
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29. Bayesian sparse factor analysis with kernelized observations.
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Carlos Sevilla-Salcedo, Alejandro Guerrero-López, Pablo M. Olmos, and Vanessa Gómez-Verdejo
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- 2022
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30. Study protocol for pragmatic trials of Internet-delivered guided and unguided cognitive behavior therapy for treating depression and anxiety in university students of two Latin American countries: the Yo Puedo Sentirme Bien study
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Corina Benjet, Ronald C. Kessler, Alan E. Kazdin, Pim Cuijpers, Yesica Albor, Nayib Carrasco Tapias, Carlos C. Contreras-Ibáñez, Ma Socorro Durán González, Sarah M. Gildea, Noé González, José Benjamín Guerrero López, Alex Luedtke, Maria Elena Medina-Mora, Jorge Palacios, Derek Richards, Alicia Salamanca-Sanabria, and Nancy A. Sampson
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Depression ,Anxiety ,iCBT ,Latin America ,College students ,Precision treatment algorithm ,Medicine (General) ,R5-920 - Abstract
Abstract Background Major depressive disorder (MDD) and generalized anxiety disorder (GAD) are highly prevalent among university students and predict impaired college performance and later life role functioning. Yet most students do not receive treatment, especially in low-middle-income countries (LMICs). We aim to evaluate the effects of expanding treatment using scalable and inexpensive Internet-delivered transdiagnostic cognitive behavioral therapy (iCBT) among college students with symptoms of MDD and/or GAD in two LMICs in Latin America (Colombia and Mexico) and to investigate the feasibility of creating a precision treatment rule (PTR) to predict for whom iCBT is most effective. Methods We will first carry out a multi-site randomized pragmatic clinical trial (N = 1500) of students seeking treatment at student mental health clinics in participating universities or responding to an email offering services. Students on wait lists for clinic services will be randomized to unguided iCBT (33%), guided iCBT (33%), and treatment as usual (TAU) (33%). iCBT will be provided immediately whereas TAU will be whenever a clinic appointment is available. Short-term aggregate effects will be assessed at 90 days and longer-term effects 12 months after randomization. We will use ensemble machine learning to predict heterogeneity of treatment effects of unguided versus guided iCBT versus TAU and develop a precision treatment rule (PTR) to optimize individual student outcome. We will then conduct a second and third trial with separate samples (n = 500 per arm), but with unequal allocation across two arms: 25% will be assigned to the treatment determined to yield optimal outcomes based on the PTR developed in the first trial (PTR for optimal short-term outcomes for Trial 2 and 12-month outcomes for Trial 3), whereas the remaining 75% will be assigned with equal allocation across all three treatment arms. Discussion By collecting comprehensive baseline characteristics to evaluate heterogeneity of treatment effects, we will provide valuable and innovative information to optimize treatment effects and guide university mental health treatment planning. Such an effort could have enormous public-health implications for the region by increasing the reach of treatment, decreasing unmet need and clinic wait times, and serving as a model of evidence-based intervention planning and implementation. Trial status IRB Approval of Protocol Version 1.0; June 3, 2020. Recruitment began on March 1, 2021. Recruitment is tentatively scheduled to be completed on May 30, 2024. Trial registration ClinicalTrials.gov NCT04780542 . First submission date: February 28, 2021.
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- 2022
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31. Bayesian sparse factor analysis with kernelized observations
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Sevilla-Salcedo, Carlos, Guerrero-López, Alejandro, M. Olmos, Pablo, and Gómez-Verdejo, Vanessa
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- 2022
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32. Factors Associated With Chronic De Novo Post-Coronavirus Disease Gastrointestinal Disorders in a Metropolitan US County
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Barreto, Esteban, Vergara Cobos, Josselyn, Buchanan, Kelly L., Boyd, Taylor, Desai, Anshuman C., Chablaney, Shreya, Guerrero López, Ingrid, Betancourt, Joseph R., Vélez, Christopher, Paz, Mary, Silvernale, Casey, Stratton, Lawrence W., Kuo, Braden, and Staller, Kyle
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- 2022
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33. Better cigarette tax policies and higher tobacco excise tax revenues.
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Hye Myung Lee, Drope, Jeffrey, Guerrero López, Carlos Manuel, Perucic, Anne- Marie, and Chaloupka, Frank J.
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GOVERNMENT policy ,RESEARCH funding ,INCOME ,COST effectiveness ,DESCRIPTIVE statistics ,TAXATION ,TOBACCO products - Published
- 2024
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34. Evaluation of the Insecticidal Potential of Heterotheca inuloides Acetonic and Methanolic Extracts against Spodoptera frugiperda and Their Ecotoxicological Effect on Poecilia reticulata
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Karla Hernández-Caracheo, Lina Guerrero-López, Benjamín Rodríguez-Sánchez, Enrique Rodríguez-Núñez, José Luis Rodríguez-Chávez, Guillermo Delgado-Lamas, Juan Campos-Guillén, Aldo Amaro-Reyes, María del Carmen Monroy-Dosta, Carlos Eduardo Zavala-Gómez, Ricardo Chaparro-Sánchez, José Alberto Rodríguez-Morales, Víctor Pérez-Moreno, and Miguel Angel Ramos-López
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Spodoptera frugiperda ,Poecilia reticulata ,ecotoxicologic ,insecticide ,botanical extract ,Botany ,QK1-989 - Abstract
For the management of Spodoptera frugiperda, botanical extracts have been used to reduce the environmental impacts of synthetic chemical pesticides. In the present investigation, the insecticidal activity of the acetonic and methanolic extracts of Heterotheca inuloides (Asteraceae) and of the main compound 7-hydroxy-3,4-dihydrocadalene on this pest as well as its ecotoxicological effect on Poecilia reticulata were evaluated. A greater insecticidal response was obtained from the acetonic extracts than from the methanolic extracts, with LC50 values of 730.4 ppm and 711.7 ppm for samples 1 and 2, respectively. Similarly, there was a lethal effect on 50% of the P. reticulata population at low concentrations in the acetonic extract compared to the methanolic extract. The sesquiterpene 7-hydroxy-3,4-dihydrocadalene has greater insecticidal activity by presenting an LC50 of 44.36 ppm; however, it is classified as moderately toxic for guppy fish.
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- 2023
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35. Density of alcohol-selling outlets and prices are associated with frequent binge drinking in Mexico
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Colchero, M. Arantxa, Barrientos-Gutiérrez, Tonatiuh, Guerrero-López, Carlos M., and Bautista-Arredondo, Sergio
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- 2022
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36. Queratoconjuntivitis seca y su relación con el grupo etario, presión intraocular y glucemia en perros braquiocefálicos, Ecuador
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Mayra Sánchez-Ordoñez, Fernando Aguilar-Gálvez, Dioselina Pimbosa-Ortiz, Ana Guerrero-López, and Robert Sánchez-Prado
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Ojo ,queratoconjuntivitis ,Schirmer ,braquiocefálico ,presión ,Cattle ,SF191-275 ,Veterinary medicine ,SF600-1100 - Abstract
La queratoconjuntivitis seca (QCS) es una enfermedad inflamatoria que afecta la córnea y conjuntiva generando signos oculares como resequedad de la córnea, ulceraciones, pigmentación, vascularización y disminución significativa de la cantidad de la producción lagrimal que es secretada por las glándulas lagrimales, tarsales y ciliares apocrinas. El objetivo de esta investigación fue determinar la incidencia de QCS con el método diagnóstico cuantitativo “test de Schirmer”, y relacionarlo con el grupo etario, la presión ocular y la glucemia. En la metodología empleada se realizó una valoración clínica oftalmológica a perros braquiocefálicos de la ciudad de Machala (Ecuador), aparentemente sanos tomando en cuenta el sexo y registro etario. Se organizaron 3 grupos de estudio de 6 meses a 2 años de edad (AdE), de 2,5 a 5 AdE y mayores a 6 AdE. Para el diagnóstico de QCS se empleó la tira de papel absorbente “test de Schirmer” comercial. La incidencia de QCS en los perros braquiocefálicos fue del 27,3 %, encontrándose el 40 % de éstos en edades entre los 2,5 a 5 AdE sin relación estadística. Un tercio de los animales (33,3 %), presentaron una presión intraocular alta sin relación a la presencia de la QCS en el grupo etario afectado. La alta incidencia de la QC lleva a implementar en las clínicas veterinarias, exámenes oftalmológicos preventivos a los pacientes braquiocefálicos ya que tienen cierta predisposición por su anatomía a padecer esta patología.
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- 2023
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37. Detección molecular de coinfección por Ehrlichia canis y Ehrlichia ewingii en un perro en Ecuador
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Lorena Elizabeth Chalco-Torres, Ana Elizabeth Guerrero-López, Robert Gustavo Sánchez-Prado, Jhonny Edgar Pérez Rodríguez, Claudio Oliveira, Juan Antonio Gómez, Fernando Lenin-Aguilar, and Mauro Nirchio-Tursellino
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Ehrlichiosis canina ,Ehrlichia ewingii ,coinfección ,PCR ,Cattle ,SF191-275 ,Veterinary medicine ,SF600-1100 - Abstract
Se presenta el estudio de un perro con sintomatología de Parvovirosis que resultó positivo a los test de inmunocromatografìa para Parvovirus y Ehrlichia canis el cual fue confirmado, a nivel molecular, como positivo para E. canis y E. ewingii. Además del interés que representa este caso desde el punto de vista clínico, la detección mediante PCR de E. ewingii sugiere la presencia de este patógeno fuera de su rango de distribución geográfica natural (México, Guatemala, Guyana, Guayana Francesa y Estados Unidos) y destaca la necesidad de realizar estudios moleculares en garrapatas locales a fin de verificar si éste es un caso aislado en Ecuador o si, por el contrario, existe colonización de E. ewingii en vectores locales.
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- 2023
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38. Study protocol for pragmatic trials of Internet-delivered guided and unguided cognitive behavior therapy for treating depression and anxiety in university students of two Latin American countries: the Yo Puedo Sentirme Bien study
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Benjet, Corina, Kessler, Ronald C., Kazdin, Alan E., Cuijpers, Pim, Albor, Yesica, Carrasco Tapias, Nayib, Contreras-Ibáñez, Carlos C., Durán González, Ma Socorro, Gildea, Sarah M., González, Noé, Guerrero López, José Benjamín, Luedtke, Alex, Medina-Mora, Maria Elena, Palacios, Jorge, Richards, Derek, Salamanca-Sanabria, Alicia, and Sampson, Nancy A.
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- 2022
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39. Shorter telomere length is associated with COVID-19 hospitalization and with persistence of radiographic lung abnormalities
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Retuerto, Miriam, Lledó, Ana, Fernandez-Varas, Beatriz, Guerrero-López, Rosa, Usategui, Alicia, Lalueza, Antonio, García-García, Rocío, Mancebo, Esther, Paz-Artal, Estela, Sastre, Leandro, Perona, Rosario, and Pablos, José L.
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- 2022
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40. Endoscopic endonasal lateral transellar approach for growth hormone-secreting adenomas with cavernous sinus invasion: Technical note and surgical results
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Gómez-Amador, Juan Luis, Martínez-Anda, Jaime Jesús, Guerrero-Suarez, Pablo David, Rosales-Amaya, Arturo Miguel, Delgado-Arce, Julio Cesar, and Guerrero-López, David Antonio
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- 2021
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41. Medición Seriada del Lactato como Indicador de Mortalidad en Pacientes Caninos en Estado Grave; en el Centro Médico Veterinario Vet Life, Tumbes – Perú
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Saldarriaga Mendoza, Edwin, Aguilar Gálvez, Fernando L., Guerrero López, Ana E., Zapata Saavedra, Matilde Lorena, Jibaja Cruz, Omar E., Nuntón Chavesta, Jose A., Saldarriaga Mendoza, Edwin, Aguilar Gálvez, Fernando L., Guerrero López, Ana E., Zapata Saavedra, Matilde Lorena, Jibaja Cruz, Omar E., and Nuntón Chavesta, Jose A.
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In the present research work we proposed to determine the serial measurement of lactate as an indicator of mortality in critically ill canine patients; in the veterinary medical centre VET LIFE; TUMBES - PERÚ.Between the months of July and November of the present year; 50 critically ill canine patients were evaluated and their physiological constants were also considered, such as: temperature, capillary refill time (CLFT), heart rate (HR), respiratory rate (RR) and blood lactate. Using the methodology described above, 38 patients survived, representing 76%, and 12 patients whose lactate levels remained elevated died, representing 24%. Analysing mortality by sex, 21.7% of females died, while 25.9% of males died. The study also reports that mortality is much higher in dogs older than 5 years, with 37.5%; in those less than one year old, 15.4% died and in those between 1 and 5 years old, 24.1% died. The average ages of the dogs that died and those that survived were very similar, with averages of 3.4 and 3.1 years and a median of 3 and 3.5 years respectively. The very similar standard deviation of those who died and those who survived indicates that the ages vary on average by 2.5 and 2.2 years around the mean. On the other hand, the study found that the majority of dogs that died were pit bulls, as evidenced by 30.8%, followed by CSD and German Shepherd dogs with 22.7% and 25% mortality. The study also found that the most frequent pathology of the dogs that died was polytraumatism and neoplasia, causes for which 71.4% and 66.7% died, respectively. With these results we will be able to establish an accurate prognosis and subsequent emergency treatment as appropriate., En el presente trabajo de investigación se propuso determinar la medición seriada de lactato como indicador de mortalidad en pacientes caninos en estado graves; en el centro médico veterinario VET LIFE; TUMBES - PERÚ. Entre los meses de julio y noviembre del presente año; se evaluaron 50 pacientes caninos en estado grave de los cuales se les considera también sus constantes fisiológicas como: Temperatura, tiempo de llenado capilar (TLLC), frecuencia cardiaca (FC), frecuencia respiratoria (FR) y lactato en sangre utilizando la metodología descrita anteriormente, se obtuvo como resultado que 38 pacientes sobrevivieron representando el 76% y 12 pacientes cuyos niveles de lactato permanecieron elevados fallecieron representando el 24%. Analizando la mortalidad por sexo, de las hembras fallecieron el 21.7%, mientras que de los machos falleció el 25.9%. El estudio también reporta que la mortalidad es mucho más alta en los canes de más de 5 años, con un 37.5%; en los que tienen menos de un año, falleció el 15.4% y en los que tienen de 1 a 5 años, los fallecidos suman 24.1%. Los promedios de las edades de los canes que fallecieron y en los que sobrevivieron son muy parecidas, con promedios de 3.4 y 3.1 años y con una mediana de 3 y 3.5 años respectivamente. La desviación estándar muy similar en los que fallecieron y en los que sobrevivieron indica que las edades varían en promedio en 2.5 y 2.2 años alrededor de la media. Por otro lado, el estudio encontró que la cifra de canes que fallecieron mayormente fueron de raza pitbull, según se evidencia en el 30.8%; luego siguen los canes de raza CSD (Can sin raza definida) y Pastor alemán con una mortalidad del 22.7% y 25%. El estudio también encontró que la patología más frecuente de los canes que fallecieron fue el politraumatismo y las neoplasias, causas por las cuales fallecieron el 71.4% y 66.7%, respectivamente. Con estos resultados podremos establecer un pronóstico preciso y un posterior tratamiento de urgencias según sea e
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- 2024
42. Detección Molecular con la Técnica de PCR en un solo Paso para Ehrlichia Canis en Perros del Cantón Ponce Enríquez, Ecuador
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Vásquez Borja, Silvia, Aguilar Gálvez, Fernando L., Guerrero López, Ana E., Mocha Cuenca, Brian, Baylon Cuba, Miluska Vanessa, Sánchez Prado, Robert Gustavo, Vásquez Borja, Silvia, Aguilar Gálvez, Fernando L., Guerrero López, Ana E., Mocha Cuenca, Brian, Baylon Cuba, Miluska Vanessa, and Sánchez Prado, Robert Gustavo
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Ehrlichiosis is a tick-borne infectious disease in dogs and other canids, caused by Ehrlichia canis (E. canis), and its diagnosis is crucial for clinical management and disease control. Polymerase Chain Reaction (PCR) has proven to be an effective tool for the molecular detection of E. canis, allowing specific and sensitive identification of the bacteria in infected dogs. This study was designed to detect the presence of E. canis using the one-step PCR molecular diagnostic method, considering possible molecular variants that may arise. The results showed that out of 120 symptomatic canine patients compatible with E. canis, 45 tested positive for the Immunochromatographic (IC) kit (45/145), yielding a prevalence of 37.5% positivity for E. canis antibodies. PCR amplification using specific primers for E. canis was observed in 14 animals out of the total 45 positive for IC, with an infection rate of 31.11%, yielding a 409 bp amplicon as the final product. The values found in the E. canis infection rate concerning age, sex, and breed were not significant (p-value >0.005). As no differences were found, we can indicate that these conditions do not affect the incidence of the disease and its positivity. This study confirmed the presence of the bacteria in the sampled animals using one-step PCR and proposes the implementation of this technique as a diagnostic tool in the city., La Ehrlichiosis es una enfermedad infecciosa transmitida por garrapatas en perros y otros cánidos, es causada por Ehrlichia canis (E. canis) y su diagnóstico es fundamental para su manejo clínico y control de la patología. La Reacción en Cadena de la Polimerasa (PCR) ha demostrado ser una herramienta eficaz para la detección molecular de E. canis, permitiendo una identificación específica y sensible de la bacteria en perros infectados. Este estudio fue diseñado para detectar la presencia de E. canis utilizando el método de diagnóstico molecular por PCR en un solo paso, considerando las posibles variantes moleculares que pueden surgir. El resultado evidencio que de 120 pacientes caninos sintomáticamente compatibles con E. canis, 45 resultaron positivos al kit de Inmunocromatográfia (45/145), dando una prevalencia de 37,5% de positividad a la presencia de anticuerpos a E. canis. Y la amplificación por PCR utilizando cebadores específicos para E. canis se dio en 14 animales del total de 45 positivos a IC, con tasa de infección del 31,11%, con un amplicón de 409 pb como producto final. Los valores encontrados en la tasa de infección de E. canis con relación a la edad, sexo y raza no fueron significativos (p-valor >0.005), al no encontrar diferencias podemos indicar que estas condiciones no afectan de ninguna forma la incidencia de la enfermedad y su positividad. Este estudio logró confirmo la presencia de la bacteria en los animales muestreados por medio de PCR en un solo paso y propone la implementación de esta técnica como herramienta diagnóstica en la ciudad.
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- 2024
43. Efectividad del Acido Hipocloroso en el Tratamiento de Otitis en Perros, en Machala
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Capa Verdezoto, Vinicia Mercedes, Pareja Mena, Verónica, Sánchez Prado, Robert Gustavo, Guerrero López, Ana E., Guzmán Pucha, Samantha Cecibel, Capa Verdezoto, Vinicia Mercedes, Pareja Mena, Verónica, Sánchez Prado, Robert Gustavo, Guerrero López, Ana E., and Guzmán Pucha, Samantha Cecibel
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The article addresses the issue of external otitis in dogs, highlighting the frequency of this condition in veterinary consultations and the challenges associated with its treatment. It is mentioned that many cases of chronic otitis are due to inadequate treatment with antibiotics and antifungals, as well as the lack of commitment by owners to carry out home treatments. The importance of cytology as a key diagnostic tool to identify the cause of external otitis, especially infections, is emphasized. The cytology process and its interpretation are described in detail, emphasizing the presence of bacteria as an indicator of infection. This research highlights the efficacy of 0.5% hypochlorous acid as a safe and effective alternative for the treatment of external otitis. The design of the experimental study is described, which included the application of hypochlorous acid for two months to 20 dogs with external otitis, along with clinical and cytological follow-up. The results show a significant reduction in pruritus and an improvement in the condition of the treated patients. Microbiological findings are also discussed, where a decrease in bacterial and Malassezia burden is observed in treated patients. These results are compared with previous studies supporting the efficacy of hypochlorous acid in eliminating pathogens. It is concluded that 0.5% hypochlorous acid is an effective therapeutic option for the treatment of external otitis in dogs, with evident positive results in reducing pruritus and bacterial burden., El artículo aborda la problemática de las otitis externas en perros, destacando la frecuencia de esta patología en las consultas veterinarias y los desafíos asociados con su tratamiento. Se menciona que muchos casos de otitis crónicas se deben a tratamientos inadecuados con antibióticos y antifúngicos, así como a la falta de compromiso por parte de los dueños para realizar tratamientos domiciliarios. Se hace hincapié en la importancia de la citología como herramienta diagnóstica clave para identificar la causa de la otitis externa, especialmente las infecciones. Se describe detalladamente el proceso de citología y su interpretación, subrayando la presencia de bacterias como indicador de infección. Esta investigación destaca la eficacia del ácido hipocloroso al 0,5% como una alternativa segura y efectiva para el tratamiento de las otitis externas. Se describe el diseño del estudio experimental, que incluyó la aplicación del ácido hipocloroso durante dos meses a 20 perros con otitis externa, junto con el seguimiento clínico y citológico. Los resultados muestran una reducción significativa en el prurito y una mejora en la condición de los pacientes tratados. Se discuten también los hallazgos microbiológicos, donde se observa una disminución en la carga bacteriana y de Malassezia en los pacientes tratados. Se comparan estos resultados con estudios previos que respaldan la eficacia del ácido hipocloroso en la eliminación de agentes patógenos. Se concluye que el ácido hipocloroso al 0,5% es una opción terapéutica efectiva para el tratamiento de la otitis externa en perros, con resultados positivos evidentes en la reducción del prurito y la carga bacteriana.
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- 2024
44. Eficacia de la Ecografía Operatoria más Neuronavegación para la Cirugía de Glioma Cerebral: Experiencia De 2 Años en un solo Centro en un País en Desarrollo
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Delgado Jurado, Ernesto Javier, Guerrero Suarez, Pablo David, Martínez Anda, Jaime Jesús, Berrío Perea, Edinson David, Preciado Vásquez, Jimmy, Guerrero López, David Antonio, Velasco Torres, Héctor Sebastián, Delgado Jurado, Ernesto Javier, Guerrero Suarez, Pablo David, Martínez Anda, Jaime Jesús, Berrío Perea, Edinson David, Preciado Vásquez, Jimmy, Guerrero López, David Antonio, and Velasco Torres, Héctor Sebastián
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Background: preoperative MRI data has been the gold standard for the diagnosis and therapy of malignant gliomas for decades, and operative ultrasonography for the management of patients with neurological pathologies that require surgical treatment has been also used for many years as it provides additional image guidance for surgical procedure to neuronavigation techniques. The main objective of this study is to find out if the use of operative ultrasonography in glioma surgery could give greater benefit in the total resection of brain gliomas and how improvement influences the degree of neoplastic resection on the survival of patients. Methods: prospective case-control study that was performed at the ISSEMyM Licenciado Arturo Montiel Rojas Medical Center, of patients with a histopathological diagnosis of cerebral glioma treated by the neurosurgery service in the period between January 2018 and December 2020. Results: Thirty - two patients were included, with 13 patients (40.6%) with grade IV astrocytoma. Operative USG + NNV was used in 17 patients and a subtotal or total resection was achieved in 75% of the patients, with a significantly lower postoperative volumetry in patients operated on by NNV + USG (5.6mm3 + 2.5), compared to NNV alone (8mm3 + 2.8) However, these results did not affect tumor-free time, which was comparable between both groups. Conclusions: Surgical treatment of brain gliomas with USG + NNV has a good degree of tumor resection compared to those treated with NNV only, but the main factor affecting survival is the hystophatological grade of the tumor., Antecedentes: los datos preoperatorios de resonancia magnética han sido el patrón oro para el diagnóstico y tratamiento de los gliomas malignos durante décadas, y la ultrasonografía operatoria para el manejo de pacientes con patologías neurológicas que requieren tratamiento quirúrgico también se ha utilizado durante muchos años, ya que proporciona una guía de imagen para el procedimiento quirúrgico adicional a las técnicas de neuronavegación. El objetivo principal de este estudio es averiguar si el uso de la ultrasonografía operatoria en la cirugía del glioma puede aportar un mayor beneficio en la resección total de los gliomas cerebrales y cómo influye la mejora del grado de resección neoplásica en la supervivencia de los pacientes. Métodos: estudio prospectivo de casos y controles que se realizó en el Centro Médico ISSEMyM Licenciado Arturo Montiel Rojas, de pacientes con diagnóstico histopatológico de glioma cerebral tratados por el servicio de neurocirugía en el periodo comprendido entre enero de 2018 y diciembre de 2020. Resultados: Se incluyeron 32 pacientes, con 13 pacientes (40,6%) con astrocitoma grado IV. Se utilizó USG + NNV operatoria en 17 pacientes y se consiguió una resección subtotal o total en el 75% de los pacientes, con una volumetría postoperatoria significativamente menor en los pacientes intervenidos mediante NNV + USG (5,6mm3 + 2,5), en comparación con la NNV sola (8mm3 + 2,8) Sin embargo, estos resultados no afectaron al tiempo libre de tumor, que fue comparable entre ambos grupos. Conclusiones: El tratamiento quirúrgico de los gliomas cerebrales con USG + NNV tiene un buen grado de resección tumoral en comparación con los tratados sólo con NNV, pero el principal factor que afecta a la supervivencia es el grado histofatológico del tumor.
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- 2024
45. Esporotricosis en un gato doméstico. Reporte del primer caso en Ecuador
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Mónica Salomé Zúñiga-Valencia, Andrés Renato Ordoñez, Felipe Rosa Cunha, and Ana Elizabeth Guerrero-López
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Sporothrix ,felinos ,epidemiología ,micosis ,zoonosis ,Cattle ,SF191-275 ,Veterinary medicine ,SF600-1100 - Abstract
La Esporotricosis es una micosis causada por especies de patógenos de Sporothrix schenkii. Las manifestaciones clínicas en gatos ocasionan lesiones cutáneas como nódulos y ulceras. Este trabajo tuvo como objetivo el reporte de un caso de un felino, macho entero, de aproximadamente seis años de edad, que presentaba una masa de 12 centímetros (cm) en la cabeza, de consistencia sólida, base ancha y muy vascularizada. Se solicitó examen de sangre completo y prueba para descarte de enfermedades virales. Los resultados fueron positivos a Leucemia Viral Felina, en el hemograma se observó una pancitopenia con un hematocrito de 11 %. Se realizó una citología por punción con aguja fina; en el microscopio se pudo diferenciar neutrófilos degenerados y microorganismos ovales con un halo sin teñir y un centro basófilo. Con el resultado se tomó una muestra del tejido y se envió para cultivo micológico en agar Sabouraud, el cual reveló colonias de color negruzco-castaño. Hubo respuesta favorable al tratamiento con itraconazol y baños con shampoo de Clorhexidina más Miconazol, a los 90 días (d) se observó una cicatriz de promedio de 1 cm y al realizar una citología no se observó contenido ni celularidad con la tinción, se suspendió el tratamiento a los 90 d. Este es el primer reporte documentado de esporotricosis de un felino en Ecuador.
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- 2022
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46. Elasticidad precio y elasticidad ingreso de la demanda de cerveza en México
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Luis Alberto Moreno-Aguilar, Carlos Manuel Guerrero-López, M Arantxa Colchero, Amado D Quezada-Sánchez, and Sergio Bautista-Arredondo
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cerveza ,elasticidad ,impuestos ,méxico ,estudios de series temporales ,Public aspects of medicine ,RA1-1270 - Abstract
Objetivo. Estimar la elasticidad precio y la elasticidad ingreso de la demanda de cerveza en México. Material y métodos. Se utilizaron series mensuales de ventas y precios de cerveza de 2007 a 2019. Se estimó la elasticidad a largo plazo mediante un modelo de mínimos cuadrados ordinarios (MCO). La elasticidad en el corto plazo se estimó mediante un modelo de mínimos cuadrados ordinarios dinámicos (MCOD). Resultados. La elasticidad precio en el largo plazo fue de -1.40 (IC95%: -2.53 a -0.27) y -1.31 (IC95%: -2.46 a -0.15) en el corto plazo. La elasticidad ingreso de la demanda en el largo y en el corto plazo se estimó en 0.86 (IC95%: 0.44-1.29) y 0.93 (IC95%: 0.51-1.34), respectivamente. Conclusión. Los hallazgos de este estudio sugieren que las políticas fiscales pueden tener un impacto positivo en la salud de la población al reducir el consumo de cerveza.
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- 2021
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47. Hydroponic foods: an alternative for the feeding of domestic animals
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Núñez-Torres Oscar Patricio and Guerrero-López Jorge Ricardo
- Subjects
water ,plant biomass ,nutrients ,techniques. ,Animal culture ,SF1-1100 - Abstract
Currently, in critical times of confinement, hydroponics is a viable alternative that allows the production of plant biomass derived from the initial development of plants in the stages of germination and early growth of seedlings from feasible seeds, it is the sowing of soilless cultivation, this method facilitates the productive, sustainable, and ecological development of plants. Hydroponic crops are developed in a medium or culture system fed by a nutrient solution that offers the precise food for the entire period of growth of the forages, free of pesticides and fungicides with this we get healthy food for the feeding of domestic animals. In addition, it allows the use of simple or complex structures to produce fodder, taking advantage of spaces or areas such as terraces, infertile soils, rugged terrain, technical or traditional greenhouses. Based on this idea, techniques were deployed that are supported by using substrates, or methods with contributions of nutrient solutions, always considering the needs of the plant such as temperature, humidity, water, and nutrients. Based on practice, the benefits per unit of planted area are high due to greater consistency, productivity, safety, and efficiency in the use of water, light, and nutrients, and it is also economically viable that deserves to be considered by small and medium- sized companies. rural producers of domestic animals.
- Published
- 2021
- Full Text
- View/download PDF
48. Problematic Use of Smartphones and Social Media on Sleep Quality of High School Students in Mexico City.
- Author
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Olivares-Guido, Cristopher Martín, Tafoya, Silvia Aracely, Aburto-Arciniega, Mónica Beatriz, Guerrero-López, Benjamín, and Diaz-Olavarrieta, Claudia
- Published
- 2024
- Full Text
- View/download PDF
49. The Role of Functional Deficits, Depression, and Cognitive Symptoms in the Perceived Loneliness of Older Adults in Mexico City.
- Author
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Ramírez López, Ana Belén, Rodríguez-Agudelo, Yaneth, Paz-Rodríguez, Francisco, Tafoya, Silvia Aracely, Guerrero López, Benjamín, and Diaz Olavarrieta, Claudia
- Published
- 2024
- Full Text
- View/download PDF
50. Electroceuticals and Magnetoceuticals in Gastroenterology.
- Author
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Song, Gengqing, Sclocco, Roberta, Sharma, Amol, Guerrero-López, Ingrid, and Kuo, Braden
- Subjects
VAGUS nerve stimulation ,INFLAMMATORY bowel diseases ,GASTROINTESTINAL motility disorders ,THERAPEUTICS ,ELECTROACUPUNCTURE - Abstract
In the realm of gastroenterology, the inadequacy of current medical treatments for gastrointestinal (GI) motility disorders and inflammatory bowel disease (IBD), coupled with their potential side effects, necessitates novel therapeutic approaches. Neuromodulation, targeting the nervous system's control of GI functions, emerges as a promising alternative. This review explores the promising effects of vagal nerve stimulation (VNS), magnetic neuromodulation, and acupuncture in managing these challenging conditions. VNS offers targeted modulation of GI motility and inflammation, presenting a potential solution for patients not fully relieved from traditional medications. Magnetic neuromodulation, through non-invasive means, aims to enhance neurophysiological processes, showing promise in improving GI function and reducing inflammation. Acupuncture and electroacupuncture, grounded in traditional medicine yet validated by modern science, exert comprehensive effects on GI physiology via neuro-immune-endocrine mechanisms, offering relief from motility and inflammatory symptoms. This review highlights the need for further research to refine these interventions, emphasizing their prospective role in advancing patient-specific management strategies for GI motility disorders and IBD, thus paving the way for a new therapeutic paradigm. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
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