Publications by authors named "Bong S Park"

This study aimed to investigate alterations in a multilayer network combining structural and functional layers in patients with end-stage kidney disease (ESKD) compared with healthy controls. In all, 38 ESKD patients and 43 healthy participants were prospectively enrolled. They exhibited normal brain magnetic resonance imaging (MRI) without any structural lesions.

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Beneficial fungi are promising tools for enhancing plant growth and crop yield in stressful environments. TLL1 (POT1) was identified as a potential biofertilizer enhancing plant growth and phosphate use efficiency especially under phosphate deficiency stress. Hence, we attempted to explore bioinformatic insights into how POT1 enhances plant growth under phosphate starvation.

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Objectives: The choroid plexus plays a role in eliminating detrimental metabolites from the brain as an integral component of the glymphatic system. This study aimed to investigate alterations in choroid plexus volume in patients with end-stage renal disease (ESRD) compared with healthy controls.

Methods: We enrolled 40 patients with ESRD and 42 healthy controls.

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Article Synopsis
  • The study compared shear-wave elastography (SWE) ultrasound and CT composition analysis in assessing muscle quality of the right mid-rectus femoris muscle in healthy adults versus chronic kidney disease (CKD) patients.
  • A total of 63 healthy adults and 22 CKD patients were evaluated, revealing that healthy individuals had significantly higher shear-wave velocity (SWV) compared to CKD patients and also a lower percentage of low-density muscle.
  • The findings indicate that SWE is a reliable, radiation-free method for objectively evaluating muscle quality, showing strong correlations between SWV and normal density muscle percentages in both groups.
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Objectives: Studies have recently shown an alteration of the structural connectivity and a dysfunctional glymphatic system in patients with chronic kidney disease (CKD). In this study, we aimed to investigate the effects of the structural connectivity and glymphatic system on the cognitive function of patients with CKD.

Methods: We prospectively enrolled patients with CKD and healthy controls.

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Introduction: Patients with end-stage renal disease (ESRD) are known to have reduced structural and functional brain connectivity in the brain regions associated with cognitive function. However, the effect of dialysis on brain connectivity remains unclear. This study aimed to evaluate the effects of dialysis on structural brain connectivity in patients with ESRD.

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Background: End-stage kidney disease (ESKD) patients undergoing hemodialysis experience diverse neurological complications. This study investigated prefrontal cerebral blood volume (CBV) and cerebral blood flow (CBF) during hemodialysis using functional near-infrared spectroscopy (fNIRS) to analyze cerebral hemodynamic changes.

Methods: ESKD patients undergoing maintenance hemodialysis without a history of neurological disorders were enrolled prospectively.

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Aluminum (Al), prevalent in the crust of the Earth, jeopardizes plant health in acidic soils, hindering root growth and overall development. In this study, we first analysed the Al- and pH- tolerance of the TLL1 strain (POT1; NRRL:68252) and investigated the potential for enhancing plant resilience under Al-rich acidic soil conditions. Our research illustrates the extraordinary tolerance of POT1 to both high Al concentrations and acidic conditions, showcasing its potential to alleviate Al-induced stress in plants.

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Sarcopenia, characterized by progressive muscle loss and functional decline, poses significant risks, including falls, impaired daily activities, and increased mortality. We developed Allgeun, a novel device that measures handgrip strength, muscle mass, and physical performance. This study aimed to investigate whether temporal muscle thickness (TMT) could be used as a sarcopenia marker and to evaluate the usability of Allgeun.

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  • The study investigated the relationship between white matter (WM) tracts and severity of obstructive sleep apnea (OSA) using correlation tractography.
  • Participants (40 with OSA) underwent diffusion tensor imaging (DTI) to analyze various diffusion metrics and correlate them with the apnea-hypopnea index (AHI) as a measure of OSA severity.
  • Results showed a negative correlation between the AHI and fractional anisotropy (FA) values in several specific WM tracts, indicating OSA severity may involve changes in tissue properties rather than neuronal loss.
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This paper proposes a decentralized practical prescribed-time (PT) tracking design using quantized output feedback (QOF) for uncertain interconnected lower-triangular systems with unknown time-delay interconnections. The local output signals are assumed to be only measured and quantized for the PT tracker design under a band-limited network. By employing a PT-dependent scaling function, a decentralized memoryless PT observer based on quantized local outputs is developed to estimate local unmeasurable state variables.

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  • The study investigated the relationship between white matter tracts in the brain and kidney function in patients with end-stage renal disease (ESRD) using advanced imaging techniques.
  • Ten ESRD patients underwent diffusion tensor imaging (DTI) before and after dialysis to assess changes in brain structure.
  • Results showed no correlation between white matter tract anisotropy and kidney function, but significant differences in diffusion density were found in certain brain areas after dialysis, indicating its impact on brain structure.
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Microbiomes in soil ecosystems play a significant role in solubilizing insoluble inorganic and organic phosphate sources with low availability and mobility in the soil. They transfer the phosphate ion to plants, thereby promoting plant growth. In this study, we isolated an unidentified fungal strain, POT1 ( TLL1) from indoor dust samples, and confirmed its ability to promote root growth, especially under phosphate deficiency, as well as solubilizing activity for insoluble phosphates such as AlPO, FePO·4HO, Ca(PO), and hydroxyapatite.

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We investigated the changes in structural connectivity (using diffusion tensor imaging [DTI]) and the structural covariance network based on structural volume using graph theory in patients with neurofibromatosis type 1 (NF1) compared to a healthy control group. We included 14 patients with NF1, according to international consensus recommendations, and 16 healthy individuals formed the control group. This was retrospectively observational study followed STROBE guideline.

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In the agricultural industry, the post-harvest leafy vegetable quality and shelf life significantly influence market value and consumer acceptability. This study examined the effects of different storage temperatures on leaf senescence, nitrogen assimilation, and remobilization in Pak Choi ( subsp. ).

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Purpose: The purpose of this study was to examine differences in functional connectivity between patients with end-stage renal disease (ESRD) with and without restless legs syndrome (RLS). In addition, the study aimed to identify any potential associations between RLS severity and functional connectivity.

Methods: We enrolled patients with ESRD who had been undergoing hemodialysis.

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Introduction: The aims of this study were to evaluate 1) glymphatic system function in patients with end-stage kidney disease (ESKD) before initiating dialysis compared to healthy controls, and 2) changes in the glymphatic system function after kidney replacement therapy including dialysis in patients with ESKD using the diffusion tensor image analysis along the perivascular space (DTI-ALPS) method.

Materials And Methods: This study was prospectively conducted at a single hospital. We enrolled 14 neurologically asymptomatic patients who first initiated hemodialysis or peritoneal dialysis for ESKD and 17 healthy controls.

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Article Synopsis
  • * A total of 37 patients underwent cognitive assessment and fNIRS data collection to analyze brain connectivity; results showed that 23 had cognitive impairment.
  • * Findings indicated that those with cognitive impairment had significantly lower measures of brain network strength and efficiency compared to those without impairment, suggesting a link between cognitive function and brain connectivity in ESRD patients.
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This article explores a guaranteed network connectivity problem during moving obstacle avoidance within a distributed formation tracking framework for uncertain nonlinear multiagent systems with range constraints. We investigate this problem based on a new adaptive distributed design using nonlinear errors and auxiliary signals. Within the detection range, each agent regards other agents and static or dynamic objects as obstacles.

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This study aimed to investigate functional brain connectivity in patients with end-stage renal disease (ESRD) undergoing hemodialysis using functional near-infrared spectroscopy (fNIRS) and to analyze the effect of hemodialysis on functional brain connectivity. We prospectively enrolled patients with ESRD undergoing hemodialysis for > 6 months without any history of neurological or psychiatric disorders. fNIRS data were acquired using a NIRSIT Lite device.

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Patients undergoing maintenance dialysis have a higher mortality rate associated with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, and response rates to vaccination against SARS-CoV-2 vary from 29.6% to 96.4% in such patients.

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Phosphate (Pi) availability is a major factor limiting plant growth and development. The key transcription factor controlling Pi-starvation response (PSR) is PHOSPHATE STARVATION RESPONSE 1 (PHR1) whose transcript levels do not change with changes in Pi levels. However, how PHR1 stability is regulated at the post-translational level is relatively unexplored in Arabidopsis thaliana.

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Introduction: It is a recent finding that glymphatic system dysfunction contributes to various neurological problems. The purpose of this research was to assess the function of the glymphatic system in neurologically asymptomatic early chronic kidney disease (CKD) patients and healthy controls, using diffusion tensor image analysis along perivascular space (DTI-ALPS) index.

Methods: In a prospective study, we included patients with early CKD who were asymptomatic for neurological issues and obtained clinical and laboratory data.

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Background: The purpose of this study was to examine glymphatic system function in patients with transient global amnesia (TGA), as well as to conduct a recurrence analysis.

Methods: We enrolled patients with TGA and healthy controls from our hospital retrospectively. The patients and healthy controls were all scanned with the same 3T scanner, which included diffusion tensor imaging (DTI).

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Article Synopsis
  • - This study aimed to explore how the glymphatic system function is altered in patients with cluster headache compared to healthy individuals.
  • - Researchers used MRI techniques, including diffusion tensor imaging (DTI), to measure the DTI-ALPS index in 14 patients and 23 controls, finding significantly lower values in headache patients.
  • - The results suggest potential glymphatic dysfunction in cluster headache patients, with further research needed to understand its relationship with the condition's underlying mechanisms.
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