Publications by authors named "Johnson G"

In this Expert Opinion, we provide the rationale for concluding that radiation segmentectomy (using RADSEG method), a technique of administrating ablative, complete necrosis-inducing trans-arterial Yttrium-90 (Y90) radiotherapy in limited-disease burden hepatocellular carcinoma (HCC), is curative. Currently, curative options for early stage and other carefully selected HCC patients include transplantation, resection, and ablation. Because of issues with organ availability, co-morbidities preventing resection, and tumor size and location limiting ablation, other treatments are necessary for this selected patient population.

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Objective: Epilepsy is a common neurological disease affecting nearly 1% of the global population, and temporal lobe epilepsy (TLE) is the most common type. Patients experience recurrent seizures and chronic cognitive deficits that can impact their quality of life, ability to work, and independence. These cognitive deficits often extend beyond the temporal lobe and are not well understood.

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Objective: Inflammation contributes to morbidity following subarachnoid hemorrhage (SAH). The authors of this study evaluate how applying noninvasive transauricular vagus nerve stimulation (taVNS) can target this deleterious inflammatory response following SAH and reduce the rate of radiographic vasospasm.

Methods: In this prospective, triple-blinded, randomized controlled trial, 27 patients were randomized to taVNS or sham stimulation.

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The creatine (Cr) biosynthesis pathway buffers ATP in metabolically active tissues. We investigated whether sex of fetus and day of gestation influence Cr in endometrial and conceptus tissues from gilts on Days 60 and Day 90 (n = 6 gilts/day) of gestation. Uterine and conceptus tissues associated with one male and one female fetus from each gilt were analyzed for creatine, mRNAs, and proteins for Cr biosynthesis.

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Elevated intraocular pressure (IOP) is implicated in the structural and functional damage to the retinal ganglion cells (RGCs) in primary open-angle glaucoma (POAG). Topical IOP lowering agents provide short-term relief, necessitating frequent dosing. Moreover, non-adherence to frequent eyedrops administration contributes significantly to visual field loss and worsens the disease outcome.

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mpactR automates pre-processing of liquid chromatography-tandem mass spectrometry (LC-MS/MS) data from microbiological samples to correct mispicked peaks, resolve inter-sample variation in abundance across technical replicates, account for in-source ion fragmentation, and remove background noise to yield high-quality mass spectrometry features. The package is available through CRAN and GitHub.

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Chimeric antigen receptor (CAR)-T cell therapy represents a breakthrough for the treatment of hematological malignancies. However, to treat solid tumors and certain hematologic cancers, next-generation CAR-T cells require further genetic modifications to overcome some of the current limitations. Improving manufacturing processes to preserve cell health and function of edited T cells is equally critical.

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Purpose: To report on optical coherence tomography angiography (OCTA) in patients with a type 1 Boston keratoprosthesis (KPro) and determine its feasibility through assessment of imaging artifacts.

Methods: KPro and non-KPro subjects were matched for age, gender, and glaucoma diagnosis. OCTA images of the peripapillary optic nerve were obtained, reviewed by 2 readers masked to the diagnosis for artifacts and usability, and used for microvascular measurements.

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There is an increasing awareness that B-cell lymphoma 2 (Bcl-2)-associated athanogene (BAG) proteins play critical roles in maintaining neural homeostasis, and that their dysregulation contributes to neurological disorders. This protein family of nine members is evolutionarily conserved, with each member having at least one BAG domain that binds to the nucleotide-binding domains of Heat Shock Protein (Hsp) 70 family members. Collectively, these proteins are essential for the proper functioning of the central nervous system (CNS).

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Peroral endoscopic myotomy (POEM) is a novel technique within the field of third space endoscopy. The overarching principal is creation of a mucosal incision, careful dissection of the submucosal space using an electrosurgical knife to reach the muscularis (ie, tunneling), performing a controlled myotomy, and finally, closure of the mucosal incision. POEM was first developed for the management of achalasia, and now a decade of evidence shows the procedure is safe, effective, and highly reproducible.

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Astrocytes play critical roles in supporting structural and metabolic homeostasis in the central nervous system (CNS). CNS injury leads to the development of a range of reactive phenotypes in astrocytes whose molecular determinants are poorly understood. Finding ways to modulate astrocytic injury responses and leverage a pro-recovery phenotype holds promise in treating CNS injury.

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Article Synopsis
  • Neurodegenerative diseases like Alzheimer's are linked to problems with mitochondria, specifically mitophagy, which is the process of removing damaged mitochondria.
  • Research indicates that mutated tau proteins can inhibit this process, affecting cell health during oxidative stress.
  • In this study, it was found that certain tau mutations reduce levels of a key mitophagy receptor, FKBP8, which could help explain tau's role in mitochondrial dysfunction related to Alzheimer's and suggest FKBP8 as a target for future treatments.
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The tumorigenic dose 50 (TD) is a widely used measure of carcinogenic potency which has historically been used to determine acceptable intake limits for carcinogenic compounds. Although broadly used, the TD model was not designed to account for important biological factors such as DNA repair and cell compensatory mechanisms, changes in absorption, etc., leading to the development of benchmark dose (BMD) approaches, which use more flexible dose-response models that are better able to account for these processes.

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Synovial lipomatosis is an uncommon, intra-articular, fat-containing, proliferative lesion with unknown etiology that is rarely reported in dogs. A retrospective study spanning 13 years was conducted to search for cases of canine synovial lipomatosis. Among 188 synovial biopsies of major diarthrodial joints (ie, shoulder, elbow, carpus, hip, stifle, and tarsus) from 186 dogs, 4 cases (2.

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The global seasonal cycle of energy in Earth's climate system is quantified using observations and reanalyses. After removing long-term trends, net energy entering and exiting the climate system at the top of the atmosphere (TOA) should agree with the sum of energy entering and exiting the ocean, atmosphere, land, and ice over the course of an average year. Achieving such a balanced budget with observations has been challenging.

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Satellite observations from the Clouds and the Earth's Radiant Energy System show that Earth's energy imbalance has doubled from 0.5 ± 0.2 Wm during the first 10 years of this century to 1.

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This study uses an oceanic energy budget to estimate the ocean heat transport convergence in the North Atlantic during 2005-2018. The horizontal convergence of the ocean heat transport is estimated using ocean heat content tendency primarily derived from satellite altimetry combined with space gravimetry. The net surface energy fluxes are inferred from mass-corrected divergence of atmospheric energy transport and tendency of the ECMWF ERA5 reanalysis combined with top-of-the-atmosphere radiative fluxes from the clouds and the Earth's radiant energy system project.

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Leaders undertaking the effort to dismantle structural inqualities at the organizational level often find traditional professional development on diversity, equity, and inclusion to be limited in scope, rarely leading to meaningful organizational change. The Racial Equity, Diversity, and Inclusion (REDI) Movement was developed in 2020 by associates within a Midwest university research center to increase efforts toward the pursuit of a holistic, systems-level approach to equity, social justice, and inclusion. REDI now includes several interventions that prepare associates and their teams to advance racial justice and equity across four levels of the REDI Framework: Intrapersonal, Interpersonal, Institutional, and Societal.

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Despite the significant advances made involving the additive manufacturing (AM) of metals, including those related to both materials and processes, challenges remain in regard to the rapid qualification and insertion of such materials into applications. In general, understanding the process-microstructure-property interrelationships is essential. To successfully understand these interrelationships on a process-by-process basis and exploit such knowledge in practice, leveraging monitoring, modeling, and statistical analysis is necessary.

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Article Synopsis
  • Cells are crucial for studying health and diseases, but traditional models are limited in their ability to accurately represent cell function and behavior.
  • Advances in AI and omics technology enable the development of AI virtual cells (AIVCs), complex models that simulate molecular, cellular, and tissue behavior across various conditions.
  • The creation of AIVCs aims to enhance biological research by allowing detailed simulations, speeding up discoveries, and promoting collaborative and interdisciplinary approaches in open scientific research.
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We contrast the switching of photoluminescence (PL) of PbS quantum dots (QDs) cross-linked with photochromic diarylethene molecules with different end groups, 4,4'-(1-cyclopentene-1,2-diyl)bis[5-methyl-2-thiophenecarboxylic acid] () and 4,4'-(1-cyclopentene-1,2-diyl)bis[5-methyl-2-thiophenethiocarboxylic acid] (). Our results show that the QDs cross-linked with the carboxylic acid end group molecules () exhibit a greater amount of switching in photoluminescence intensity compared to QDs cross-linked with the thiocarboxylic acid end group (). We also demonstrate that regardless of the molecule used, greater switching amounts are observed for smaller quantum dots.

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Purpose: While MEK inhibitors demonstrated activity in metastatic triple negative breast cancer (mTNBC) preclinical studies, preclinical, and clinical studies implicate rapid development of resistance limiting clinical benefit. The purpose of this study was to determine response rate for Trametinib alone and in combination with Uprosertib in patients with mTNBC previously treated with chemotherapy.

Methods: This was an open-label, two-part, phase II, single-arm, multicenter study.

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Effective therapies for pancreatic ductal adenocarcinoma (PDAC) have been largely elusive. Here, we perform Multiplexed kinase Inhibitor Bead Mass Spectrometry on 102 patient derived xenografts derived from 14 unique primary PDAC to define the tumor-intrinsic kinome landscape. Our findings uncover three kinome subgroups making up two tumor-intrinsic kinome subtypes that we call kinotypes.

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Article Synopsis
  • Family-led interventions can help manage delirium in intensive care but are rarely applied consistently due to their varying nature; a digital tool could enhance this integration.* -
  • A study conducted in a UK ICU assessed a family member's voice reorientation intervention with 30 participants, finding it was feasible and generally well-accepted by patients, family members, and nurses.* -
  • The intervention showed potential benefits in providing orientation and comfort to patients, but further research is needed to fully understand its effectiveness in preventing delirium.*
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Objective: To define the natural history, patterns of recurrence and treatment modalities for local prostate cancer (PCa) recurrence following radical prostatectomy (RP) and radiation therapy (RT), and to investigate factors that could predict metastasis-free survival (MFS) in this unique patient population.

Methods: We queried a prospectively maintained PCa registry to identify men developing in-field recurrence (IFR) following RP and RT from 2008 to 2021 at a single institution. IFR was defined as biopsy-proven recurrent PCa or the presence of persistent positron emission tomography-avid lesions in the prior radiation field without evidence of metastasis.

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