Publications by authors named "Jhelly-Reynaluz Perez-Nunez"

Objectives: This review aims to evaluate several convolutional neural network (CNN) models applied to breast cancer detection, to identify and categorize CNN variants in recent studies, and to analyze their specific strengths, limitations, and challenges.

Methods: Using PRISMA methodology, this review examines studies that focus on deep learning techniques, specifically CNN, for breast cancer detection. Inclusion criteria encompassed studies from the past five years, with duplicates and those unrelated to breast cancer excluded.

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  • GBM IDH wild type (GBM IDH wt) is linked to bad outcomes and intense inflammatory processes that help tumors grow and attract immune cells, making them more aggressive.
  • Researchers utilized RNA-seq and bioinformatics tools to explore how inflammatory molecules, specifically S100A proteins, play a role in glioma, finding a notable increase in S100A expression in GBM IDH wt compared to IDH mutants.
  • The study identified specific functions of S100A9, A11, and A13 in different regions of the glioma microenvironment, suggesting potential therapeutic strategies, such as using the RAGE inhibitor Azeliragon, currently in clinical trials, to counteract these inflammatory effects.
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  • - The research aimed to create a deep learning model for accurately assessing the extent of resection (EOR) in glioblastoma patients using postoperative MRI scans, addressing limitations of existing algorithms that only focus on preoperative images.
  • - Utilizing data from multiple sources, the model was trained to segment tumor features like contrast-enhancing tumor, edema, and surgical cavity, and was compared with other segmentation models, showing high performance in classifying resection categories.
  • - The study found that the nnU-Net framework outperformed other algorithms, achieving high accuracy in both segmentation (with median Dice scores up to 0.81) and EOR classification (96% accuracy in comparisons), making it a valuable tool for clinical use.
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Non-bovine dairy animals, commonly referred to as non-traditional dairy species, include goats, sheep, yaks, buffalo, donkeys, alpacas, llamas, and other less commonly farmed species. These animals have been integral to livestock systems since ancient times, providing milk and other essential products. Despite their historical significance, dairy production from many of these species remains predominantly confined to rural areas in developing countries, where scientific advancements and technical improvements are often limited.

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  • The study focused on understanding neuromuscular adaptations in patients with bimalleolar fractures at 6 and 12 months after surgery, specifically through the Y-Balance Test (YBT).
  • Results indicated significant differences in muscle activation and balance performance between the injured and non-injured limbs at 6 months post-surgery, particularly highlighting the role of hip strength and ankle dorsiflexion, with observable changes decreasing by the 12-month mark; more research is necessary to further analyze these findings.
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The African swine fever virus (ASFV) causes fatal disease in pigs and is currently spreading globally. Commercially safe vaccines are urgently required. Aiming to generate a novel live attenuated vaccine (LAV), a recombinant ASFV was generated by deleting the viral O174L (PolX) gene.

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Informal caregivers of older people face demanding responsibilities that can negatively affect their wellbeing, highlighting the relevance of interventions that address their specific needs. This study aimed to assess the effects of a group music therapy program based on different songwriting approaches applied to informal caregivers of older adults with dependency. A sample of 113 caregivers participated, being assigned either to the intervention ( = 60) or the control group ( = 53).

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Astrogliosis is a process by which astrocytes, when exposed to inflammation, exhibit hypertrophy, motility, and elevated expression of reactivity markers such as Glial Fibrillar Acidic Protein, Vimentin, and Connexin43. Since 1999, our laboratory in Chile has been studying molecular signaling pathways associated with "gliosis" and has reported that reactive astrocytes upregulate Syndecan 4 and αβ Integrin, which are receptors for the neuronal glycoprotein Thy-1. Thy-1 engagement stimulates adhesion and migration of reactive astrocytes and induces neurons to retract neurites, thus hindering neuronal network repair.

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Background: Activating and inhibitory receptors of natural killer (NK) cells such as NKp, NKG2, or CLEC are highly relevant to cold tumors including glioblastoma (GBM). Here, we aimed to characterize the expression of these receptors in GBM to gain insight into their potential role as modulators of the intratumoral microenvironment.

Methods: We performed a transcriptomic analysis of several NK receptors with a focus on the activating receptor encoded by NKG2C, among bulk and single-cell RNA sequencing GBM data sets.

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Purpose: To identify risk factors predisposing patients to poor outcomes after fixation of periprosthetic hip fractures around femoral stems.

Methods: Prospective multicentre cohort study of fractures around a hip replacement stem managed by internal fixation. The primary outcome was one-year mortality, while secondary outcomes were local complications and healthcare burden-related outcomes (nursing facility utilization and hospital length of stay).

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Background: Some risk factors for breast reduction complications are well known but for others the results are contradictory in scientific literature. The choice between superior pedicle and superomedial pedicle as a risk factor has been rarely studied. We aim to better identify the risk factors for breast reduction complications, including the choice between these two pedicles, in order to better prevent their occurrence.

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Astrocytes are the most abundant type of glial cell in the central nervous system. Upon injury and inflammation, astrocytes become reactive and undergo morphological and functional changes. Depending on their phenotypic classification as A1 or A2, reactive astrocytes contribute to both neurotoxic and neuroprotective responses, respectively.

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African swine fever virus (ASFV) is the etiological agent causing African swine fever (ASF), affecting domestic pigs and wild boar, which is currently the biggest animal epidemic in the world and a major threat to the swine sector. At present, some safety concerns about using LAVs against ASFV still exist despite a commercial vaccine licensed in Vietnam. Therefore, the efforts to identify virulence factors and their mechanisms, as well as to generate new vaccine prototypes, are of major interest.

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Introduction: Parents of children with neuromuscular diseases experience multiple difficulties in their daily lives that affect their physical and psychological health. The risk factors for these health issues have not been sufficiently investigated. Therefore, the aim of this study was to analyze the potential predictors of overload in these parents, including QoL, somatic symptomatology, life satisfaction, psychological adjustment and certain sociodemographic variables.

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Introduction: Informal caregivers of elderly people with dependency (EPD) provide intensive care that can affect their quality of life (QoL). Psychosocial interventions such as music therapy are important to work on their self-care. The aim of this study is to analyze, with a mixed method approach, the experience of participating in a Songwriting Group Music Therapy (SGMT) intervention on informal caregivers of EPD.

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Background: Glioblastoma (GBM) is a highly malignant brain tumor that affects men more often than women. In addition, the former shows a poorer survival prognosis. To date, the reason for this sex-specific aggressiveness remains unclear.

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Article Synopsis
  • - This study examines genetic factors linked to atypical femoral fractures (AFF), which occur in patients on long-term anti-resorptive therapy, focusing on specific genes related to bone health.
  • - Analysis of 13 AFF patients revealed only one with a pathogenic gene variant (ALPL), but significantly more genetic variants were found in AFF patients compared to those without AFF, especially in genes associated with bone formation.
  • - The findings suggest that a combination of genetic variants influences the risk of AFF, highlighting specific genes (ACAN, SUCO, AKAP13, ARHGEF3, PITX2, P4HB) as potential risk factors, warranting larger studies for effective patient risk assessment.
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Limited data are available in Mexico on the prevalence of alcohol and drug use and the possible differences in their effects on types of road traffic injury (RTI), such as those involving pedestrians, drivers or passengers of motorcycles or other motor vehicles, and the association between substance use and driving behaviors, for preventive purposes. The sample comprised 433 adult RTI patients, admitted to the emergency department (ED) of a public hospital in Mexico City (January to April 2022). Breath Alcohol Concentration (BAC) was measured using a breath tester, and six types of drugs (amphetamines, barbiturates, benzodiazepines, cannabis, cocaine, and methamphetamine) were assessed using a saliva screen test.

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Introduction: Recurrent Aphthous Stomatitis, also known as aphthous ulcers or simply aphthous, is considered the most common of oral mucosal lesions.

Objective: To describe the prevalence of recurrent aphthous stomatitis.

Methods: Descriptive, cross-sectional and prospective study.

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Purpose: After standard treatment for glioblastoma, perfusion MRI remains challenging for differentiating tumor progression from post-treatment changes. Our objectives were (1) to correlate rCBV values at diagnosis and at first tumor progression and (2) to analyze the relationship of rCBV values at tumor recurrence with enhancing volume, localization of tumor progression, and time elapsed since the end of radiotherapy in tumor recurrence.

Methods: Inclusion criteria were (1) age > 18 years, (2) histologically confirmed glioblastoma treated with STUPP regimen, and (3) tumor progression according to RANO criteria > 12 weeks after radiotherapy.

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The objective of this paper was to identify the main indicators used to measure the performance in emergency trauma care. A literature review was carried out in the electronic databases: PubMEd, LILACS and Epistemónikos, including publications between January 2011 and December 31, 2021, in Spanish, English and Portuguese. A total of 962 publications were identified.

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Background: Sport injuries can negatively impact physical and psychological aspects of athletes. There is a gap in the literature regarding facial trauma present in basketball.

Purpose: The purpose of this study is to identify and describe facial trauma present in the National Basketball Association (NBA).

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African swine fever virus (ASFV) is the cause of the current major animal epidemic worldwide. This disease affects domestic pigs and wild boars, has spread since 2007 through Russia, Eastern Europe, and more recently to Western European countries, and since 2018 emerged in China, from where it spread throughout Southeast Asia. Recently, outbreaks have appeared in the Caribbean, threatening the Americas.

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