Publications by authors named "Parekh K"

Aims And Objectives: This study aimed to compare the accuracy of two AI models - OpenAI's GPT-4 Turbo (San Francisco, CA) and Meta's LLaMA 3.1 (Menlo Park, CA) - when answering a standardized set of pediatric radiology questions. The primary objective was to evaluate the overall accuracy of each model, while the secondary objective was to assess their performance within subsections.

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Recent advancements in natural language processing (NLP) have profoundly transformed the medical industry, enhancing large cohort data analysis, improving diagnostic capabilities, and streamlining clinical workflows. Among the leading tools in this domain is ChatGPT 4.0 (OpenAI, San Francisco, California, US), a commercial NLP model widely used across various applications.

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Cell phenotype underlies prostate cancer presentation and treatment resistance and can be regulated by epigenomic features. However, the osteotropic tendency of prostate cancer limits access to metastatic tissue, meaning most prior insights into prostate cancer chromatin biology are from preclinical models that do not fully represent disease complexity. Noninvasive chromatin immunoprecipitation of histones in plasma cell-free in humans may enable capture of disparate prostate cancer phenotypes.

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Event-related potentials (ERPs) are small voltage changes in the brain that reliably occur in response to auditory or visual stimuli. ERPs have been extensively studied in both humans and animals to identify biomarkers, test pharmacological agents, and generate testable hypotheses about the physiological and genetic basis of schizophrenia. In this chapter, we discuss how ERPs are generated and recorded as well as review canonical ERP components in the context of schizophrenia research in humans.

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Aims And Objectives: This study evaluates the accuracy of two AI language models, ChatGPT 4.0 and Google Gemini (as of August 2024), in answering a set of 79 text-based pediatric radiology questions from "Pediatric Imaging: A Core Review." Accurate interpretation of text and images is critical in radiology, making AI tools valuable in medical education.

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Unlabelled: Magnetotactic bacteria (MTB) are a unique ecophysiological group of iron-metabolizing bacteria that have immense potential biotechnological applications. These bacteria have predominantly been isolated from oxygen-limited conditions of aquatic niches and rarely from the soils. The Western Ghats biodiversity hotspot has been well-studied for its fauna and flora diversity.

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The need of the hour with respect to cancer treatment is a targeted approach with minimal or nil ramifications. Apropos, magnetic fluid hyperthermia (MFH) is emerging as a potential therapeutic strategy with anticipated reduced side effects for solid tumors. MFH causes cytotoxicity due to the heat generated owing to Hysteresis, Neel, and Brownian relaxation losses once magnetic nanoparticles (MNPs) carrying cancer cells are placed under an alternating magnetic field.

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Objective: To illustrate the challenges encountered when gathering rapidly synthesized evidence in response to the coronavirus disease 2019 (COVID-19) pandemic.

Methods: In this article, we describe the challenges encountered when we performed a systematic literature review (SLR) of randomized controlled trials (RCTs) on the efficacy and safety of treatments for severe COVID-19. The methods of the SLR are described in full, to show the context of our objectives.

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Despite the annual vaccination of livestock against foot and mouth disease (FMD) in the United Arab Emirates (UAE), outbreaks of the disease continue to be reported. The effective control of field outbreaks by vaccination requires that the vaccines used are antigenically matched to circulating field FMD viruses. In this study, a vaccine matching analysis was performed using the two-dimensional virus neutralization test (VNT) for three field isolates belonging to the O/ME-SA/PanAsia-2/ANT-10 and O/ME-SA/SA-2018 lineages collected from different FMD outbreaks that occurred within the Abu Dhabi Emirate in 2021 affecting (), goat, and sheep.

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  • A study evaluated trends in screening for carcinoid heart disease (CHD) over two decades at a tertiary care center, focusing on patients with neuroendocrine tumors (NETs).
  • The research found that 85% of patients met expert-recommended screening criteria, but only 40% underwent echocardiogram screening, with a notable increase post-guideline release (from 32% to 70%).
  • The findings suggest that using these recommended criteria can significantly enhance early detection of CHD in at-risk patients.
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Purpose: Although patients with metastatic breast cancer (MBC) have been living longer with the advent of more effective treatments such as targeted therapy and immunotherapy, the disease remains incurable, and most patients will undergo therapy indefinitely. When beginning therapy, patients are typically prescribed dose often based upon the maximum tolerated dose identified in phase I clinical trials. However, patients' perspectives about tolerability and willingness to discuss individualized dosing of drugs upon initiation of a new regimen and throughout the course of treatment have not been comprehensively evaluated.

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Introduction: Teaching is an important competency in graduate medical education (GME). Many residency programs have implemented curricula to develop residents' teaching skills and observed structured teaching experiences (OSTEs) have been used to assess these skills. There is an increasing focus on building teaching skills earlier in the medical education continuum, however, there is limited literature on assessing medical students' teaching skills.

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The complex and heterogeneous genetic architecture of schizophrenia inspires us to look beyond individual risk genes for therapeutic strategies and target their interactive dynamics and convergence. Postsynaptic NMDA receptor (NMDAR) complexes are a site of such convergence. Src kinase is a molecular hub of NMDAR function, and its protein interaction subnetwork is enriched for risk-genes and altered protein associations in schizophrenia.

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  • - Current strategies to predict outcomes in metastatic castration-resistant prostate cancer (mCRPC) are lacking, but circulating tumor DNA fraction (ctDNA%) may hold promise for assessing patient risk.
  • - An analysis of 738 plasma samples from mCRPC patients shows that ctDNA% correlates with disease severity and is a strong predictor of overall and progression-free survival, outperforming traditional clinical factors.
  • - To address challenges with low ctDNA%, researchers developed a machine-learning tool that indicates when ctDNA% is sufficient for detailed genetic testing, enhancing patient risk assessment and biomarker testing.
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Organoids are powerful models of tissue physiology, yet their applications remain limited due to their relatively simple morphology and high organoid-to-organoid structural variability. To address these limitations we developed a soft, composite yield-stress extracellular matrix that supports optimal organoid morphogenesis following freeform 3D bioprinting of cell slurries at tissue-like densities. The material is designed with two temperature regimes: at 4 °C it exhibits reversible yield-stress behavior to support long printing times without compromising cell viability.

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Although teaching is an essential part of Graduate Medical Education and the practice of medicine, it is not often formally taught in Undergraduate Medical Education. Vanderbilt University School of Medicine (VUSM) has addressed this gap by creating a year-long Students-as-Teachers elective for post-clerkship medical students. The elective utilizes diverse activities to emphasize core tenets of medical education theory while simultaneously providing authentic teaching opportunities.

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De novo metastatic prostate cancer is highly aggressive, but the paucity of routinely collected tissue has hindered genomic stratification and precision oncology. Here, we leveraged a rare study of surgical intervention in 43 de novo metastatic prostate cancers to assess somatic genotypes across 607 synchronous primary and metastatic tissue regions plus circulating tumor DNA. Intra-prostate heterogeneity was pervasive and impacted clinically relevant genes, resulting in discordant genotypes between select primary restricted regions and synchronous metastases.

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  • CFTR modulator drugs improve lung function and body mass index in cystic fibrosis patients, but inflammation remains a challenge, indicating a need to target the underlying causes in the lungs of patients with established disease.* -
  • The study explores the presence of unique, potentially pathogenic stem cell variants in cystic fibrosis lungs, similar to those found in COPD, and aims to identify which of these variants contribute to ongoing inflammation.* -
  • Research utilized advanced stem cell cloning technology on end-stage CF lungs to identify five predominant stem cell variants, three of which are pro-inflammatory, highlighting the complexity of stem cell involvement in cystic fibrosis lung inflammation.*
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  • Peste des petits ruminants (PPR) is a viral disease affecting mainly sheep and goats, but can also infect other animals like buffalos and camels, highlighting concerns about how the virus spreads between wildlife and livestock.
  • Validated serological tools, such as the virus neutralisation test (VNT) and enzyme-linked immunosorbent assay (ELISA), have been used to detect previous infections but their effectiveness for atypical species is still uncertain.
  • A study analyzing 793 serum samples found that while VNT and ELISAs showed a high agreement (75-88%) for typical species, the accuracy dropped significantly (44-62%) for atypical species, indicating a need for better diagnostic approaches in these cases.
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The present study has investigated the effects of Metro Vancouver's wastewater treatment plant (WWTP) effluents on English sole () hepatic gene expression using novel targeted gene expression assays to complement the 2017 Burrard Inlet Ambient Monitoring Program conducted by Metro Vancouver. Seven locations of varying distance to the WWTPs were included. Twelve genes involved in xenobiotic defense (, ), thyroid function (), lipid and glucose metabolism (, , , δ, γ), protein synthesis (, ), and reproduction (α, ) revealed several differences between these impacted sites.

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  • Tracheal grafts are important for repairing airway obstructions after surgery, and bioengineered options offer customizable solutions for better integration with the body.* -
  • The study involved using a specialized bioreactor to prepare ferret tracheas with basal cells, assessing how well these grafts performed when implanted back in the body.* -
  • Although immunosuppression hindered early tissue integration, adding a growth factor helped improve blood vessel formation; the grafts showed signs of survival and integration after one month, leading to further research potential in regenerative therapy.*
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  • - The demand for donor lungs for transplantation exceeds the available supply, despite attempts to increase donor options.
  • - Lung xenotransplantation, or using animal lungs for human transplants, has potential but hasn't been tried in humans yet, facing both biological and ethical challenges.
  • - Advances in genetic engineering are helping to tackle these biological issues, which could lead to future clinical trials in this area.
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