Publications by authors named "Calderon C"

Coordinated actions of cells in microbial communities and multicellular organisms enable them to perform complex tasks otherwise difficult for single cells. This has inspired biological engineers to build cellular consortia for larger circuits with improved functionalities while implementing communication systems for coordination among cells. Here, we investigate the signalling dynamics of a phage-mediated synthetic DNA messaging system and couple it with CRISPR interference to build distributed circuits that perform logic gate operations in multicellular bacterial consortia.

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Purpose: Screening for adolescent idiopathic scoliosis (AIS) currently relies on clinical evaluations by trained practitioners, most commonly using a scoliometer. Modern structured light 3D scanning can generate high-quality 3D representations of surface anatomy using a mobile device. We hypothesized that a mobile-based 3D scanning system would provide accurate deformity assessments compared to a scoliometer.

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Introduction And Importance: Guidewire localization in breast conserving procedures is commonly performed. Although it is a relatively safe procedure, there are atypical complications that may occur. Here, we highlight a rare case of guidewire migration, affecting both the brain and spine.

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  • In 2020, Mexico's Congress introduced front-of-package warning labels (FOPWL) to help parents make informed choices about fruit-based beverages for their kids, particularly focusing on sugar content and non-nutritive sweeteners (NNS).
  • A study involving 844 parents assessed how these labels influenced their preferences and perceptions of healthiness when choosing between 100% juice, sugary nectar, and "light" nectar with NNS.
  • The results showed that FOPWL significantly increased the likelihood of choosing healthier options and decreased the perceived healthiness of less nutritious drinks, especially among parents with lower nutrition knowledge or no prior awareness of NNS.
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Approximately half of the world's displaced migrant population are women, yet gender-specific analyses are often lacking. Such analyses are crucial for understanding migrant women's unique experiences and informing policies that address their health and broader needs. This paper integrates the concept of structural violence with person-centered ethnography to examine women's physical and mental health in contexts of displacement and migration.

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  • The study aimed to analyze the global neurosurgery training workforce, focusing on the types of training programs, trainee support, diversity of experiences, and accreditation processes.
  • Data were collected from 187 countries and 25 territories, revealing an estimated 1,261 training programs and over 10,500 trainees, with significant variations in density based on country income levels and WHO regions.
  • High-income countries had a much higher density of trainees (0.48 per 100,000 people) compared to lower-income countries, which faced challenges like limited subspecialty training and resources.
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  • The study aimed to assess the global distribution and growth of consultant neurosurgeons, especially in low- and middle-income countries, to understand the impact of efforts to expand access to neurosurgery worldwide.
  • A comprehensive electronic survey was conducted across 192 countries and 25 territories, revealing an estimated 72,967 neurosurgeons, with a global density of 0.93 per 100,000 people, and significant variation by income level.
  • Findings indicated that neurosurgeon density increases with national income level, highlighting the shortage in low-income areas, particularly in WHO African and Southeast Asia regions, while the Western Pacific region showed the highest density of neurosurgeons.
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This scoping review assessed the surgical backlog in Latin America and the Caribbean (LAC) due to COVID-19 and identified mitigation strategies. We searched seven databases for citations from December 2019 to December 2022, focusing on LAC patients with cancelled or postponed procedures. We registered our protocol at Open Science Framework (https://osf.

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  • Posterior reversible encephalopathy syndrome (PRES) is a rare neurological condition that can occur after surgery, typically linked to fluctuations in blood pressure and certain medical conditions.* -
  • A 24-year-old woman developed PRES after surgery for a brain tumor, experiencing symptoms like limb weakness and gaze deviation, which were addressed by a team of specialists.* -
  • Key takeaway: Monitoring a patient's vital signs during and after surgery is crucial, as changes can lead to rare complications like PRES, highlighting the need for a collaborative medical approach.*
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  • The study examined the long-term effects of chikungunya virus (CHIKV) infection, focusing on the incidence of post-chikungunya chronic rheumatism (pCHIK-CR) and its effects on quality of life (QoL) and chronic fatigue seven years after an outbreak in Piedecuesta, Colombia.
  • Among 78 adults evaluated, 14.1% were found to have pCHIK-CR, 41.0% had non-inflammatory pain, and 44.9% had no rheumatic disease, with those suffering from pCHIK-CR showing the worst QoL and highest levels of chronic fatigue.
  • The findings indicate that roughly one in seven individuals with CHIKV infection
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Introduction: This study seeks to compare expectations regarding systemic cancer treatment for advanced lung cancer from the perspectives of both patient and medical oncologist.

Methods: A cross-sectional study involving 17 medical oncologists from 13 Spanish hospitals between 2021 and 2022. Patients with advanced, unresectable lung cancer were recruited prior to initiating systemic cancer treatment.

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Description Of The Cases: A series of 6 cases with a probable diagnosis of sporadic CJD, treated in a Peruvian national reference hospital, are presented.

Clinical Findings: The relevant clinical signs were rapidly progressive dementia and myoclonus, followed by akinetic mutism and pyramidal signs.

Treatment And Results: Of the cases presented, 80% were men, with an average age of presentation of 65 years and duration from diagnosis to death of 6.

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In 2010, Puerto Rico experienced a cluster of childhood lead poisoning cases stemming from parental occupational exposure to lead. Following the immediate response to this crisis, a dedicated coalition of pediatricians and public health practitioners sustained a collaborative effort to advance pediatric environmental health initiatives across Puerto Rico. Their commitment laid the groundwork for the establishment and evolution of Puerto Rico's comprehensive Childhood Lead Poisoning Prevention and Blood Lead Level Surveillance Program.

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  • Coumaric acid is important for various industries but traditional production methods are not very efficient.
  • This study explores improving coumaric acid production by using a genetically engineered strain of bacteria (KT2440) that expresses a specific enzyme (TAL) to convert L-tyrosine into coumaric acid.
  • The researchers achieved successful integration of the TAL gene and optimized production through a pH shift during fermentation, resulting in a significant yield of coumaric acid (1381 mg/L), showcasing the potential for sustainable production methods.
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Antimicrobial resistance is extremely common in , a frequent cause of urethritis in men and cervicitis, vaginitis, and pelvic inflammatory disease in women. Treatment of infections is difficult due to intrinsic and acquired resistance to many antibiotic classes. We undertook a program to identify novel antimicrobials with activity against from fungal natural products.

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Executive functions (EFs) are a set of cognitive processes that enable individuals to manage and coordinate their thoughts and actions toward achieving specific goals. EFs include planning, organizing, initiating, and monitoring actions, and have been found to improve with age due to the maturation of the brain, especially during childhood. Therefore, our correlational study sought to determine the relationship between the performance in executive functions and age in 79 children (36 girls, 45.

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Cognitive decline, particularly in dementia, presents complex challenges in early detection and diagnosis. While Item Response Theory (IRT) has been instrumental in identifying patterns of cognitive impairment through psychometric tests, its parametric models often require large sample sizes and strict assumptions. This creates a need for more adaptable, less demanding analytical methods.

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As cancer progresses, patients may experience physical decline, which can impair their ability to carry out essential daily tasks. The aim of this study was to analyze the levels of physical activity in patients with advanced cancer undergoing systemic treatment and its relationship with sociodemographic, clinical, and psychological factors. A prospective, cross-sectional, multicenter study was carried out in 15 oncology departments in Spain.

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This study explored the interconnections between sociodemographic elements, depression, fatigue, and exercise in patients suffering from incurable neoplasm, particularly emphasizing the mediating influence of exercise on the relationship between depression and fatigue This was a prospective, multicenter, observational study involving 15 hospitals across Spain. After three months of systemic cancer treatment, participants completed the Brief Symptom Inventory (BSI), the Godin-Shephard Leisure-Time Physical Activity Questionnaire (GSLTPAQ) and the Fatigue Assessment Scale (FAS) to measure levels of depression, fatigue, and exercise, respectively. A total of 616 subjects participated in this study.

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  • The World Health Organization (WHO) is gathering evidence on the health effects of radiofrequency electromagnetic field (RF-EMF) exposure to inform safety guidelines, particularly focusing on adverse pregnancy outcomes.
  • A systematic review was conducted through comprehensive searches of various databases, including MEDLINE, and included studies that evaluated the impact of RF-EMF on issues such as pre-term birth and miscarriage in women.
  • Ultimately, 18 relevant studies were identified for analysis, with rigorous processes in place for data screening, extraction, and assessing the risk of bias.
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  • The World Health Organization (WHO) is studying how exposure to radiofrequency electromagnetic fields (RF-EMF) may affect men's health, especially their fertility.
  • They gathered information from many scientific studies to create guidelines about RF-EMF safety.
  • The research looked at different factors like sperm quality and how long it takes for a couple to get pregnant, analyzing data from nine different studies.
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Objective: Over 90 clinical trials demonstrate the efficacy of the collaborative care model (CoCM) to treat depression in primary care but there is significant variability in real-world CoCM implementation and scalability. This study aimed to determine the feasibility and effectiveness of an adapted CoCM in a safety-net primary care setting.

Methods: Bring It Up! (BIU) is a pilot trial comparing an adapted CoCM (intervention group) to usual care (historical controls) for primary care safety-net clinic patients with depression.

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Background: Three-dimensional (3D) printing has emerged as a promising new technology for the development of surgical prosthetics. Research in orthopedic surgery has demonstrated that using 3D printed customized prosthetics results in more precise implant placements and better patient outcomes. However, there has been little research on implementing customized 3D printed prosthetics in otolaryngology.

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Cell-based medicinal products (CBMPs) are a growing class of therapeutics that promise new treatments for complex and rare diseases. Given the inherent complexity of the whole human cells comprising CBMPs, there is a need for robust and fast analytical methods for characterization, process monitoring, and quality control (QC) testing during their manufacture. Existing techniques to evaluate and monitor cell quality typically constitute labor-intensive, expensive, and highly specific staining assays.

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