2,603 results on '"Park, SM"'
Search Results
102. Tramadol use and incident dementia in older adults with musculoskeletal pain: a population-based retrospective cohort study.
- Author
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Oh SN, Kim HJ, Shim JY, Kim KW, Jeong S, Park SJ, Lee SH, Ha JW, and Park SM
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- Humans, Aged, Male, Female, Retrospective Studies, Middle Aged, Incidence, Aged, 80 and over, Republic of Korea epidemiology, Risk Factors, Propensity Score, Tramadol adverse effects, Tramadol therapeutic use, Dementia epidemiology, Dementia chemically induced, Musculoskeletal Pain epidemiology, Musculoskeletal Pain chemically induced, Musculoskeletal Pain drug therapy, Analgesics, Opioid adverse effects, Analgesics, Opioid therapeutic use
- Abstract
We aimed to assess the association of tramadol use with the risk of dementia. This population-based retrospective cohort study using the Korean National Health Insurance Service database included a total of 1,865,827 older adult patients aged 60 years or older with common musculoskeletal pain between January 1, 2003, and December 31, 2007. Individuals who were newly dispensed tramadol (N = 41,963) were identified and propensity score-matched with those who were not (N = 41,963). Over a maximum of 14-year follow-up, the incidence rates (events per 1000 person-years) of all-cause dementia were 6.1 for nonusers, 6.2 for those with cumulative tramadol use of 1-14 days, 7.7 for those with 15-90 days of use, and 8.0 for those with > 90 days of use. Longer cumulative duration of tramadol use was associated with an increased risk of all-cause dementia compared with nonuse (1 to 14 days: aHR 1.06, 95% CI 0.96-1.17; 15 to 90 days: aHR 1.14, 95% CI 1.10-1.35; and more than 90 days: aHR 1.18, 95% CI 1.00-1.39; test for trend: P < 0.001). The results showed a similar pattern for Alzheimer's disease and were robust across subgroup and sensitivity analyses, but not for vascular dementia. This study found that exposure to tramadol was associated with an increased risk of dementia. Taking this potential risk into consideration, clinicians should carefully weigh potential benefits and risks when prescribing tramadol to older adults with musculoskeletal pain., (© 2024. The Author(s).)
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- 2024
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103. Antisense-mediated splicing correction as a therapeutic approach for p53 K120R mutation.
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Kim D, Park SM, Lee SY, Kim J, Jung HB, Kim YS, and Chung SK
- Abstract
The TP53 c.359A>G mutation significantly disrupts the expression of the major TP53 transcript variant encoding p53 K120R by generating a new splice donor site. An antisense morpholino oligomer (AMO) targeting this mutation successfully restored normal splicing and the expression of the major TP53 variant. Given that p53 exerts its tumor suppressor function by regulating target genes responsible for growth arrest or apoptosis, the p53 K120R protein enhanced by AMO exhibits impaired transcriptional regulation of CDKN1A, a key growth arrest gene, while maintaining normal induction of the pro-apoptotic BBC3 gene. As a result, the mutant p53 K120R protein shows a defective cell growth arrest phenotype but retains apoptotic function, suggesting that it may still possess some tumor suppressor activity. Furthermore, lysine 120, known to provide a critical acetylation site for p53 activation, highlights the relevance of acetylation in tumor suppression through studies of the p53 K120R mutant. However, our findings demonstrate that targeting mutant TP53 mRNA with AMO is essential for restoring p53 function. In conclusion, this study emphasizes the potential of AMO-mediated splice correction as a therapeutic approach for TP53 mutations.
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- 2024
104. Correlation between the etiology of severe hearing loss and endolymphatic hydrops.
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Park SM, Han JH, Lee JK, Choi BS, Bae YJ, and Choi BY
- Abstract
Purpose: This study aimed to investigate correlation between the presence of endolymphatic hydrops(EH) and factors such as causes of hearing loss, patient age, duration of deafness, and results of vestibular function tests., Methods: We retrospectively reviewed medical charts of 128 ears of cochlear implantees who were not considered relevant to Meniere's disease., Results: When comparing group with genetic variants of GJB2, SLC26A4, LMX1A and other genetic mutation group, the proportion of vestibular EH and cochlear EH found in group with genetic variants of GJB2, SLC26A4, LMX1A was significantly higher than group with other genetic etiology (p < 0.01) or the group with all the other causes of hearing loss (p < 0.01). The rate of vestibular and cochlear EH detection was higher in younger patients (41.5% and 35.4%) than in older patients (25.4% and 20.6%). A higher ratio of vestibular and cochlear EH was observed in patients with a longer duration of deafness (37.5% and 31.3%) than those with a shorter duration of deafness (29.7% and 25.0%). The group with vestibular EH showed a higher incidence of abnormal findings in the caloric test (42.9%) than the group without vestibular EH (28.2%)., Conclusion: Patients with genetic variants of GJB2, SLC26A4, LMX1A, younger patients, those with longer deaf durations showed a higher prevalence of vestibular and cochlear EH, implying EH appears to be formed as a developmental disorder in association with a certain set of genetic variants, rather than a phenotypic marker as a result of severe to profound hearing loss., (© 2024. The Author(s).)
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- 2024
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105. Shuffled ECA-Net for stress detection from multimodal wearable sensor data.
- Author
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Kim N, Lee S, Kim J, Choi SY, and Park SM
- Abstract
Background: Recently, stress has been recognized as a key factor in the emergence of individual and social issues. Numerous attempts have been made to develop sensor-augmented psychological stress detection techniques, although existing methods are often impractical or overly subjective. To overcome these limitations, we acquired a dataset utilizing both wireless wearable multimodal sensors and salivary cortisol tests for supervised learning. We also developed a novel deep neural network (DNN) model that maximizes the benefits of sensor fusion., Method: We devised a DNN involving a shuffled efficient channel attention (ECA) module called a shuffled ECA-Net, which achieves advanced feature-level sensor fusion by considering inter-modality relationships. Through an experiment involving salivary cortisol tests on 26 participants, we acquired multiple bio-signals including electrocardiograms, respiratory waveforms, and electrogastrograms in both relaxed and stressed mental states. A training dataset was generated from the obtained data. Using the dataset, our proposed model was optimized and evaluated ten times through five-fold cross-validation, while varying a random seed., Results: Our proposed model achieved acceptable performance in stress detection, showing 0.916 accuracy, 0.917 sensitivity, 0.916 specificity, 0.914 F1-score, and 0.964 area under the receiver operating characteristic curve (AUROC). Furthermore, we demonstrated that combining multiple bio-signals with a shuffled ECA module can more accurately detect psychological stress., Conclusions: We believe that our proposed model, coupled with the evidence for the viability of multimodal sensor fusion and a shuffled ECA-Net, would significantly contribute to the resolution of stress-related issues., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024. Published by Elsevier Ltd.)
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- 2024
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106. Is minimally invasive surgery a game changer in spinal surgery?
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Park SM, Kim HJ, and Yeom JS
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Minimally invasive spine surgery (MISS) has revolutionized the treatment of spinal disorders over the past few decades. This review provides an in-depth analysis of MISS techniques, technologies, outcomes, and future directions. The evolution of MISS techniques-including tubular retractor systems, percutaneous pedicle screw fixation, minimally invasive transforaminal lumbar interbody fusion, lateral lumbar interbody fusion, and endoscopic spine surgery-has expanded the scope of treatable spinal pathologies while minimizing tissue trauma. Technological advancements such as intraoperative navigation, robotics, and augmented reality applications have enhanced precision and capabilities. Clinical evidence supports the efficacy and safety of MISS techniques for various spinal pathologies, demonstrating comparable or superior outcomes to traditional open approaches with reduced tissue trauma, blood loss, and hospital stays. Cost-effectiveness analyses also favor MISS over open techniques. Future directions in MISS include expanding indications, integrating artificial intelligence and machine learning, advancing tissue engineering and biologics, and refining robotic and augmented reality applications. As MISS continues to evolve, it is poised to play an increasingly important role in the treatment of spinal disorders, offering improved patient outcomes with reduced morbidity. However, ongoing rigorous evaluation of new techniques and technologies is crucial to balance potential benefits with associated risks and costs.
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- 2024
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107. Association between living alone and generalized anxiety disorder in Korean adults.
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Park SM, Kim DB, Joo MJ, and Park EC
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- Humans, Female, Male, Republic of Korea epidemiology, Adult, Middle Aged, Loneliness psychology, Aged, Young Adult, Nutrition Surveys, Cross-Sectional Studies, Social Isolation, Family Characteristics, Risk Factors, Anxiety Disorders epidemiology, Single Person statistics & numerical data, Single Person psychology
- Abstract
Background: Globally, the rise in single-person households poses a potential risk to mental health, with generalized anxiety disorder (GAD) being a prominent concern. The proliferation of single-person households may exacerbate social isolation and foster loneliness and anxiety. Notably, research investigating the association between single-person households and GAD remains limited. Therefore, this study aimed to investigate the association between single-person households and GAD across sexes in Korea., Methods: We utilized data from the Korea National Health and Nutrition Examination Survey conducted in 2021 and 2022, comprising a sample of 9936 participants aged 19 or older. The Generalized Anxiety Disorder Screening Tool (GAD-7) was employed to assess anxiety levels in adults. Multiple logistic regression analysis was conducted to investigate the correlation between single-person households and GAD., Results: The reference variable used in the analysis was multi-person households (consisting of two or more individuals). The association between single-person households and GAD was statistically significant across sexes (male: odds ratio [OR]: 1.92, 95 % CI: 1.15-3.20; female: OR: 1.56, 95 % CI: 1.03-2.36). Participants in single-person households exhibited higher scores on the GAD-7 compared with those in multi-person households. Notably, marital status and education level displayed disparate effects based on sex, whereas physical activity demonstrated consistent effects irrespective of sex., Limitations: Given the use of cross-sectional data, only correlations could be established., Conclusion: The findings indicate an elevated risk of GAD in single-person households compared with multi-person households. Furthermore, promoting physical activity emerged as a potential strategy for mitigating GAD in single-person households., Competing Interests: Declaration of competing interest This manuscript has not been published or presented elsewhere in part or in entirety and is not under consideration by another journal. All study participants provided informed consent. We have read and understood your journal’s policies, and we believe that neither the manuscript nor the study violates any of these., (Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.)
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- 2024
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108. Bojungikki-Tang Augments Pembrolizumab Efficacy in Human PBMC-Injected H460 Tumor-Bearing Mice.
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Na SW, Yi JM, Yeo H, Park SM, Jeong M, Chun J, and Jeong MK
- Abstract
Bojungikki-Tang (BJIKT) is traditionally used to enhance digestive function and immunity. It has gained attention as a supplement to chemotherapy or targeted therapy owing to its immune-boosting properties. This study aimed to evaluate the synergistic anti-tumor effects of BJIKT in combination with pembrolizumab in a preclinical model. MHC I/II double knockout NSG mice were humanized with peripheral blood mononuclear cells (PBMCs) and injected subcutaneously with H460 lung tumor cells to establish a humanized tumor model. Both agents were administered to evaluate their impact on tumor growth and immune cell behavior. Immunohistochemistry showed decreased exhaustion markers in CD8(+) and CD4(+) T cells within the tumor, indicating enhanced T cell activity. Additionally, RNA sequencing, transcriptome analysis, and quantitative PCR analysis were performed on tumor tissues to investigate the molecular mechanisms underlying the observed effects. The results confirmed that BJIKT improved T cell function and tumor necrosis factor signaling while suppressing transforming growth factor-β signaling. This modulation led to cell cycle arrest and apoptosis. These findings demonstrate that BJIKT, when combined with pembrolizumab, produces significant anti-tumor effects by altering immune pathways and enhancing the anti-tumor immune response. This study provides valuable insights into the role of BJIKT in the tumor microenvironment and its potential to improve therapeutic outcomes.
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- 2024
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109. Association between antibiotic use and cardiovascular diseases in metabolic dysfunction-associated steatotic liver disease: A nationally representative retrospective cohort study.
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Kang JH, Park SJ, Jeong S, Park YJ, Kim HJ, Song J, Choi J, Park S, Kim J, Lee H, Chang J, Son JS, and Park SM
- Abstract
Aim: Various subcategories for steatotic liver disease (SLD) were proposed globally. Previous studies suggested a heightened risk of cardiovascular diseases (CVD) with prolonged antibiotic exposure and metabolic dysfunction-associated SLD (MASLD), respectively. This study investigates the impact of antibiotic usage on CVD in MASLD patients., Methods: From the Korean National Health Insurance Service database, 276 520 adults aged 40 and older were included. Antibiotic exposure was defined by the cumulative prescription days and the number of classes. Participants were categorized into no SLD and MASLD groups. Hepatic steatosis was defined by using the fatty liver index ≥60. From 2013 to 2019, 16 197 CVD cases were recorded. A multivariate Cox model, adjusting for covariates, assessed adjusted hazard ratios (aHRs) and 95% confidence intervals (CIs) for CVD risk associated with MASLD and antibiotic prescriptions., Results: The group with ≥91 days of antibiotics prescribed and MASLD showed a significantly increased risk of CVD (aHR, 1.56; 95% CI, 1.39-1.74) compared with antibiotic non-users without SLD. Furthermore, the group with ≥4 classes of antibiotics prescribed and MASLD had an elevated risk of CVD (aHR, 1.49; 95% CI, 1.34-1.66) compared with antibiotic non-users without SLD. Consistent results were observed in several sensitivity analyses., Conclusions: Our study identified prolonged antibiotic exposure may be a factor that increases the risk of CVD in MASLD patients. These findings suggest an epidemiological basis for the therapeutic application of antibiotics in MASLD patients, and emphasize the need for further studies to deepen the understanding of these intricate relationships., (© 2024 Japan Society of Hepatology.)
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- 2024
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110. Association between antibiotics use and the risk of rheumatoid arthritis: a retrospective cohort study in South Korea.
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Park SJ, Kim M, Jeong J, Park YJ, Jeong S, Kim M, Kim HJ, Song J, Kim SM, Chang J, Kim KH, Ko A, and Park SM
- Abstract
Objectives: Certain studies propose that antibiotic use may influence rheumatoid arthritis (RA) incidence, but the clear association between antibiotics and RA remains unclear. Therefore, this study aimed to examine the relationship between antibiotics and RA risk to provide additional epidemiological evidence., Methods: This population-based retrospective cohort study was conducted with adults aged 40 years or older using the Korean National Health Insurance Service (NHIS) database. Antibiotic exposure was measured from 2003 to 2007. Study participants were followed up from January 1, 2008, to December 31, 2019. Multivariable Cox hazard regression was utilized to evaluate adjusted hazard ratios (aHRs) and 95% confidence intervals (CIs) for the risk of RA according to accumulative days of antibiotic use and the number of antibiotic classes used, respectively., Results: During 3,395 590 person-years of follow-up, 29 274 cases of RA were identified. Participants who used antibiotics for 91 or more days had a higher risk of RA (aHR, 1.79; 95% CI, 1.67-1.92) than antibiotic non-users. Additionally, individuals who used four or more kinds of antibiotic classes had a higher risk of RA (aHR, 1.61; 95% CI, 1.51-1.71) than those who did not prescribe antibiotics. The risk of RA was positively associated with both higher cumulative days of antibiotic exposure and a larger number of drug classes. These trends were maintained in sensitivity analyses, including variations in antibiotic exposure periods., Conclusion: Our findings suggest a possible association between the long-term use of antibiotics and RA incidence. Further studies are necessary for a clearer understanding of this association., (© The Author(s) 2024. Published by Oxford University Press on behalf of the British Society for Rheumatology. All rights reserved. For permissions, please email: journals.permissions@oup.com.)
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- 2024
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111. Clinical characteristics and long-term treatment outcomes of polypoidal choroidal vasculopathy with classic type leakage.
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Kim JH, Park SM, Kim JW, and Kim CG
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- Humans, Female, Male, Aged, Retrospective Studies, Treatment Outcome, Middle Aged, Vascular Endothelial Growth Factor A antagonists & inhibitors, Angiogenesis Inhibitors therapeutic use, Choroidal Neovascularization drug therapy, Choroid blood supply, Choroid pathology, Choroid diagnostic imaging, Choroid Diseases drug therapy, Choroid Diseases diagnosis, Tomography, Optical Coherence, Intravitreal Injections, Ranibizumab therapeutic use, Ranibizumab administration & dosage, Aged, 80 and over, Polypoidal Choroidal Vasculopathy, Visual Acuity, Fluorescein Angiography
- Abstract
To investigate long-term treatment outcomes of polypoidal choroidal vasculopathy (PCV) with classic type leakage and to compare the outcomes with those of PCV without classic type leakage. This retrospective study included 153 patients diagnosed with PCV and treated with anti-vascular endothelial growth factor (VEGF). Patients showing classic type leakage on fluorescein angiography were included in the classic type leakage group (N = 40, 26.1%), and those without classic type leakage were included in the occult group (N = 113, 73.9%). The best-corrected visual acuity (BCVA) at baseline and 24 months, changes in BCVA, incidence of fibrosis, and lesion reactivation after initial loading injections were compared between the two groups. There was no significant difference in the baseline BCVA between the classic type leakage group (mean logarithm of minimal angle of resolution 0.67 ± 0.53[Snellen equivalents = 20/93]) and the occult group (0.55 ± 0.49[20/70])(P = 0.639). In addition, the BCVA at 24 months (0.44 ± 0.53[20/55] vs. 0.38 ± 0.41[20/47])(P = 1.000), changes in BCVA (0.22 ± 0.42 improvement[2.2 lines] vs. 0.16 ± 0.36 improvement[1.6 lines]) (P = 0.366), and lesion reactivation (P = 0.787) did not differ between the two groups. The incidence of fibrosis was higher in the classic type leakage group (37.5%) than in the occult group (14.2%) (P = 0.002). Although the incidence of fibrosis was higher in PCVs with classic type leakage, the overall treatments were not significantly different between PCVs with and without classic type leakage. In addition, substantial visual improvement was noted at 24 months, suggesting that PCVs with classic type leakage can be effectively treated with anti-VEGF therapy., (© 2024. The Author(s).)
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- 2024
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112. The Effect of Transpedicular Injection of Recombinant Human Bone Morphogenetic Protein-2/Beta-Tricalcium Phosphate Carrier on the Prevention of Proximal Junctional Kyphosis in Adult Spinal Deformity Surgery: A Pilot Study.
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Park JH, Choi JY, Kwon O, Yeom JS, Park SM, Song W, and Kim HJ
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Background and Objectives: Several studies have explored strategies to prevent proximal junctional kyphosis (PJK) which is the unresolved issue in adult spinal deformity (ASD) surgery. This study aimed to investigate the preventive effects of upper instrumented vertebrae (UIV) recombinant human bone morphogenetic protein-2 (rhBMP-2) with beta-tricalcium phosphate (β-TCP) carrier injection on PJK., Methods: This study was conducted through a retrospective analysis of data collected both prospectively and retrospectively. In the rhBMP-2 group, consisting of 25 patients with ASD, rhBMP-2 along with β-TCP carrier was administered to the UIV through the pedicle. To minimize time-related bias, control-1 included 66 patients who had undergone ASD surgery by the same surgeon in the year preceding the commencement of the study. Control-2 consisted of 63 patients who had undergone ASD surgery by the same surgeon during the year after the end of the study. The primary outcome is the occurrence of PJK within one year postsurgery, and the secondary outcome is the change in Hounsfield unit of the UIV one year after the surgery., Results: When comparing baseline characteristics with control groups, a significant difference was observed only in body mass index, with control-1 (P = .006) and control-total (control-1 + control-2, P = .026) having a higher body mass index than the study group. In the rhBMP-2 group, there were 3 cases (PJK rate, 12.0%) of PJK, whereas control-1 and control-2 had 26 cases (PJK rate, 39.4%, P = .012) and 20 cases (PJK rate, 31.7%, P = .057), respectively. In the control-total, there were 46 cases (PJK rate, 35.7%, P = .020) of PJK. The UIV that received rhBMP-2 showed a statistically significant increase in Hounsfield unit measurements compared to preoperative values 1 year after surgery (P = .001)., Conclusion: The transpedicular injection of rhBMP-2/β-TCP carrier at the UIV significantly contributed to the prevention of PJK and effectively increased trabecular bone density at the UIV., (Copyright © Congress of Neurological Surgeons 2024. All rights reserved.)
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- 2024
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113. Development of Gastroretentive Floating Combination Tablets Containing Amoxicillin Trihydrate 500 mg and Levofloxacin 125 mg for Eradicating Resistant Helicobacter pylori .
- Author
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Kim DH, Lee SW, Lee JH, Park JW, Park SM, Maeng HJ, Koo TS, and Cho KH
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Background/Objectives: The aim of this work was to prepare and characterize gastroretentive floating combination tablets (GRCTs) containing 500 mg of amoxicillin trihydrate (AMX) and 125 mg of levofloxacin (LVX) that provide sustained drug release and stability at gastric pH levels for the eradication of resistant Helicobacter pylori . Method: GRCTs were prepared with low-density excipients and hydrophilic swellable polymers, including hydroxypropyl methylcellulose (HPMC) of various viscosities, polyethylene oxide (PEO), and carboxymethylcellulose (CMC), by the direct compression method. The prepared GRCTs were investigated and optimized in terms of pH stability, tablet hardness, floating lag time and total floating time, drug release rate, gel strength. Results: AMX and LVX in GRCT were stable at the HP eradication target pH above 4.0. The effervescent GRCT composition (AMX/LVX/HPMC [4000 cP]/CMC/microcrystalline cellulose/citric acid/sodium bicarbonate/calcium silicate/silicon dioxide/magnesium stearate = 500/125/50/50/125/40/60/30/10/10, w / w ) yielded acceptable hardness (>6 kp), reduced floating lag time (<5 s), a long floating duration (>12 h), and sustained release rates of AMX and LVX (>90% until 12 h). This optimized GRCT had a gel strength of 107.33 ± 10.69 g and pH > 4.0, which maintained the tablets' shape and AMX stability for 12 h. Conclusions: Collectively, the formulated effervescent GRCTs combining AMX and LVX represented a promising candidate dosage form for eradicating resistant H. pylori .
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- 2024
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114. Enhanced mechanical and damping properties of Cu-Modified Al-Ni eutectic alloys: Solid-solution and precipitation hardening effects.
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Kim JT and Park SM
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The study aimed to analyze the mechanical properties, precipitation strengthening, and microstructure of Al-Ni-Cu alloys to understand their enhanced characteristics. Additionally, the damping behavior was examined using a dynamic mechanical analyzer across a continuous heating temperature range with frequencies from 0.5 to 15 Hz. The experimental results indicate that the Al-Ni eutectic alloy, which exhibits an ultrafine Al
3 Ni intermetallic fiber-reinforced Al matrix, transitions to a dendritic-ultrafine eutectic composite structure. The Cu-containing alloys exhibit two distinct primary phases: α-Al and Al-Ni-Cu ternary intermetallic compounds. The eutectic matrix transforms from Al-Al3 Ni to Al-Al7 Cu4 Ni, and subsequently to Al-Al2 Cu. These microstructural evolutions result in an enhancement of the tensile yield strength from 170 MPa to 440 MPa, with additional hardening achieved through aging-induced precipitation. Moreover, the damping capacity improves with the addition of Cu at elevated temperatures, and there is an increase in frequency dependence. This paper will discuss the microstructural features, mechanical properties, deformation behaviors, and damping properties in detail., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. There is no financial interests., (© 2024 The Authors.)- Published
- 2024
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115. Biohybrid printing approaches for cardiac pathophysiological studies.
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Hwang DG, Kang W, Park SM, and Jang J
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- Humans, Animals, Bioprinting methods, Heart physiology, Biosensing Techniques instrumentation, Biosensing Techniques methods, Tissue Engineering methods, Myocytes, Cardiac, Printing, Three-Dimensional
- Abstract
Bioengineered hearts, which include single cardiomyocytes, engineered heart tissue, and chamber-like models, generate various biosignals, such as contractility, electrophysiological, and volume-pressure dynamic signals. Monitoring changes in these signals is crucial for understanding the mechanisms of disease progression and developing potential treatments. However, current methodologies face challenges in the continuous monitoring of bioengineered hearts over extended periods and typically require sacrificing the sample post-experiment, thereby limiting in-depth analysis. Thus, a biohybrid system consisting of living and nonliving components was developed. This system primarily features heart tissue alongside nonliving elements designed to support or comprehend its functionality. Biohybrid printing technology has simplified the creation of such systems and facilitated the development of various functional biohybrid systems capable of measuring or even regulating multiple functions, such as pacemakers, which demonstrates its versatility and potential applications. The future of biohybrid printing appears promising, with the ongoing exploration of its capabilities and potential directions for advancement., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier B.V. All rights reserved.)
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- 2024
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116. First demonstration of 2T0C-FeDRAM: a-ITZO FET and double gate a-ITZO/a-IGZO FeFET with a record-long multibit retention time of >4-bit and >2000 s.
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Noh TH, Chen S, Kim HB, Jin T, Park SM, An SU, Sun X, Kim J, Han JH, Ahn JH, Ahn DH, and Kim Y
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Conventional DRAM, consisting of one transistor and one capacitor (1T1C), requires periodic data refresh processes due to its limited retention time and data-destructive read operation. Here, we propose and demonstrate a novel 3D-DRAM memory scheme available with a single transistor and a single ferroelectric field-effect transistor (FeFET) DRAM (2T0C-FeDRAM), which offers extended retention time and non-destructive read operation. This architecture uses a back-end-of-line (BEOL)-compatible amorphous oxide semiconductor (AOS) that is suitable for increasing DRAM cell density. Notably, the device structures of a double gate a-ITZO/a-IGZO FeFET, used for data storage and reading, are engineered to achieve an enlarged memory window (MW) of 1.5 V and a prolonged retention time of 10
4 s. This is accomplished by a double gate and an a-ITZO/a-IGZO heterostructure channel to enable efficient polarization control in hafnium-zirconium oxide (HZO) layers. We present successful program/erase operations of the double gate a-ITZO/a-IGZO FeFET through incremental step pulse programming (ISPP), demonstrating multi-level states with remarkable retention characteristics. Most importantly, we perform 2T0C-FeDRAM operations by electrically connecting the double gate a-ITZO/a-IGZO FeFET and the a-ITZO FET. Leveraging the impressive performance of the double gate a-ITZO/a-IGZO FeFET technology, we have effectively showcased an exceptionally record-long retention time exceeding 2000 s and 4-bit multi-level states, positioning it as a robust contender among emerging memory solutions in the era of artificial intelligence.- Published
- 2024
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117. Feasibility of the Non-Window-Type 3D-Printed Porous Titanium Cage in Posterior Lumbar Interbody Fusion: A Randomized Controlled Multicenter Trial.
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Ham DW, Park SM, Kim YB, Chang DG, Yang JJ, Kwon BT, and Song KS
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Background: Three-dimensionally printed titanium (3D-Ti) cages can be divided into 2 types: window-type cages, which have a void for bone graft, and non-window-type cages without a void. Few studies have investigated the necessity of a void for bone graft in fusion surgery. Therefore, the present study assessed the clinical and radiographic outcomes of window and non-window-type 3D-Ti cages in single-level posterior lumbar interbody fusion., Methods: A total of 70 patients were randomly assigned to receive either a window or non-window cage; 61 patients (87%) completed final follow-up (32 from the window cage group, 29 from the non-window cage group). Radiographic outcomes, including fusion rates, subsidence, and intra-cage osseointegration patterns, were assessed. Intra-cage osseointegration was measured using the intra-cage bridging bone score for the window cage group and the surface osseointegration ratio score for the non-window cage group. Additionally, we looked for the presence of the trabecular bone remodeling (TBR) sign on computed tomography (CT) images., Results: Of the 61 patients, 58 achieved interbody fusion, resulting in a 95.1% fusion rate. The fusion rate in the non-window cage group was comparable to, and not significantly different from, that in the window cage group (96.6% and 93.8%, p > 0.99). The subsidence rate showed no significant difference between the window and non-window cage groups (15.6% and 3.4%, respectively; p = 0.262). The intra-cage osseointegration scores showed a significant difference between the groups (p = 0.007), with the non-window cage group having a higher proportion of cases with a score of 4 compared with the window cage group. The TBR sign was observed in 87.9% of patients who achieved interbody fusion, with a higher rate in the non-window cage group across the entire cohort although the difference was not significant (89.7% versus 78.1%, p = 0.385)., Conclusions: Non-window-type 3D-Ti cages showed equivalent clinical outcomes compared with window-type cages and comparable interbody fusion rates. These results suggest that the potential advantages of 3D-Ti cages could be optimized in the absence of a void for bone graft by providing a larger contact surface for osseointegration., Level of Evidence: Therapeutic Level II. See Instructions for Authors for a complete description of levels of evidence., Competing Interests: Disclosure: No external funding was received for this study. The Disclosure of Potential Conflicts of Interest forms are provided with the online version of the article (http://links.lww.com/JBJS/I182)., (Copyright © 2024 by The Journal of Bone and Joint Surgery, Incorporated.)
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- 2024
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118. Anti-inflammatory Effect of Symplocos prunifolia Extract in an In Vitro Model of Acute Pneumonia.
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Kim SW, Jee W, Park SM, Park YR, Bae H, Na YC, Lee HG, Kwon S, and Jang HJ
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Acute pneumonia is a respiratory disease characterized by inflammation within the lung tissue, exhibiting higher morbidity rates and mortality rates among immunocompromised children and older adults. Symplocos species have been traditionally used as herbal remedies for conditions like dysentery, skin ulcers, diarrhea, and dyspepsia. Contemporary research has employed various Symplocos species in the study of diverse diseases. However, the exact efficacy and mechanisms of action of Symplocos Prunifolia remain unknown. Therefore, this study investigated the anti-inflammatory mechanism of S. prunifolia extract (SPE) in A549 and RAW264.7 cells stimulated by lipopolysaccharide (LPS). SPE significantly reduced nitric oxide (NO) production and the protein expression levels of like inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) in LPS-stimulated RAW 264.7 cells. Furthermore, it reduced the protein expression levels of iNOS, COX-2 and the levels of pro-inflammatory cytokines in LPS-stimulated A549 cells. The mechanism underlying the anti-inflammatory effect of SPE was associated with the inhibition of LPS stimulated the phosphoinositide-3-kinase/protein kinase B (PI3K/Akt) and Mitogen-activated protein kinase (MAPK) phosphorylation. Moreover, we confirmed that SPE decreased the nuclear translocation of nuclear factor-κB (NF-κB)/p65 stimulated by LPS. In conclusion, these results demonstrate that SPE alleviates inflammatory responses by deactivating the PI3K/Akt, MAPK, and NF-κB signaling pathways. Our findings suggest that SPE is a potential candidate for acute pneumonia prevention., (© 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
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- 2024
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119. KORE-Map 1.0: Korean medicine Omics Resource Extension Map on transcriptome data of tonifying herbal medicine.
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Park M, Park SM, Lee H, Kim A, Kim NS, Kim YR, Yi JM, and Cha S
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- Humans, Medicine, Korean Traditional, Plants, Medicinal genetics, Herbal Medicine, Transcriptome
- Abstract
Traditional herbal medicine, rooted in a long history of use in East Asia, combines several herbs to create treatments showing high efficacy with minimal side effects, for specific diseases. Such combination therapies represent a potential reservoir of new drugs for treating multifactorial and incurable chronic diseases. However, the complexity of their mechanisms of action due to the combination of multiple compounds, has limited their research integration into modern pharmacological science. To address this challenge, we constructed drug-induced transcriptome data for herbal medicines through systematic experiments, analyzed with the aid of various omics databases. We introduce KORE-Map 1.0 (Korean medicine Omics Resource Extension Map), the first comprehensive resource of drug-derived transcriptome data for representative tonifying herbal medicines, effective in enhancing the immune system. This dataset aims to provide novel insights into the combinatorial mechanisms of these herbal medicines and to aid in the discovery of new therapeutic targets and indications for various incurable diseases., (© 2024. The Author(s).)
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- 2024
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120. Threshold of somatic mosaicism leading to brain dysfunction with focal epilepsy.
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Kim J, Park SM, Koh HY, Ko A, Kang HC, Chang WS, Kim DS, and Lee JH
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- Animals, Mice, Humans, Male, Female, Malformations of Cortical Development, Group II genetics, Malformations of Cortical Development, Group II physiopathology, Brain physiopathology, Brain metabolism, Mutation, Child, Neurons metabolism, Mice, Transgenic, Electroencephalography, Disease Models, Animal, Epilepsy, Malformations of Cortical Development, Group I, Mosaicism, Epilepsies, Partial genetics, Epilepsies, Partial physiopathology, TOR Serine-Threonine Kinases genetics, TOR Serine-Threonine Kinases metabolism
- Abstract
Somatic mosaicism in a fraction of brain cells causes neurodevelopmental disorders, including childhood intractable epilepsy. However, the threshold for somatic mosaicism leading to brain dysfunction is unknown. In this study, we induced various mosaic burdens in focal cortical dysplasia type II (FCD II) mice, featuring mTOR somatic mosaicism and spontaneous behavioural seizures. The mosaic burdens ranged from approximately 1000 to 40 000 neurons expressing the mTOR mutant in the somatosensory or medial prefrontal cortex. Surprisingly, approximately 8000-9000 neurons expressing the MTOR mutant, extrapolated to constitute 0.08%-0.09% of total cells or roughly 0.04% of variant allele frequency in the mouse hemicortex, were sufficient to trigger epileptic seizures. The mutational burden was correlated with seizure frequency and onset, with a higher tendency for electrographic inter-ictal spikes and beta- and gamma-frequency oscillations in FCD II mice exceeding the threshold. Moreover, mutation-negative FCD II patients in deep sequencing of their bulky brain tissues revealed somatic mosaicism of the mTOR pathway genes as low as 0.07% in resected brain tissues through ultra-deep targeted sequencing (up to 20 million reads). Thus, our study suggests that extremely low levels of somatic mosaicism can contribute to brain dysfunction., (© The Author(s) 2024. Published by Oxford University Press on behalf of the Guarantors of Brain. All rights reserved. For commercial re-use, please contact reprints@oup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact journals.permissions@oup.com.)
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- 2024
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121. Review of Low Titer Group O Whole Blood (LTOWB) Transfusion in Initial Resuscitation of Pediatric Trauma Patients: Assessing Potential Benefits.
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Park SM, Rodriguez J, Zhang Z, and Miyata S
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Background: Hemorrhagic shock secondary to trauma is a leading cause of pediatric mortality in the United States. Timely intervention is crucial to prevent many of these deaths. Children and adults exhibit distinct responses to trauma due to varying blood volume ratios and injury patterns. Pediatric patients with hypotension face a heightened risk of shock, demanding a more assertive resuscitation., Methods: This study is a review of the literature on LTOWB transfusion in pediatric trauma. We conducted electronic database searches until December 2022, using keywords related to LTOWB and pediatric trauma resuscitation. Randomized/non-randomized, retrospective/prospective studies were considered, assessing serological safety, adverse reactions, clinical outcomes, and cost-effectiveness., Results: Six articles were ultimately reviewed. No adverse reactions related to hemolysis biomarkers were observed. Clinical outcomes exhibited no significant differences in mortality, hospital, or ventilator days between LTOWB and component therapy (CT). However, LTOWB transfusion resulted in faster resolution of base deficit, lower INR, and reduced requirement for additive plasma and platelet transfusions. In military and massive transfusion cases, LTOWB was associated with decreased mortality and lower transfusion volumes. One article suggested potential economic advantages., Conclusions: LTOWB transfusion appears to be a promising option for pediatric trauma resuscitation, offering benefits in rapid administration and component balance. While some studies indicate potential advantages in clinical outcomes and cost-effectiveness, the current evidence is limited and requires further investigation. Future research should focus on large-scale studies to validate these findings, especially concerning economic benefits, and develop standardized protocols for LTOWB use in pediatric settings., Levels of Evidence: Treatment Study, LEVEL III., (Copyright © 2024 Elsevier Inc. All rights reserved.)
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- 2024
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122. Effect of Cage Material and Size on Fusion Rate and Subsidence Following Biportal Endoscopic Transforaminal Lumbar Interbody Fusion.
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You KH, Cho SK, Hwang JY, Cha SH, Kang MS, Park SM, and Park HJ
- Abstract
Objective: Biportal endoscopic transforaminal lumbar interbody fusion (BE-TLIF) is an emerging, minimally invasive technique performed under biportal endoscopic guidance. However, concerns regarding cage subsidence and sufficient fusion during BE-TLIF necessitate careful selection of an appropriate interbody cage to improve surgical outcomes. This study compared the fusion rate, subsidence, and other radiographic parameters according to the material and size of the cages used in BE-TLIF., Methods: In this retrospective cohort study, patients who underwent single-segment BE-TLIF between April 2019 and February 2023 were divided into 3 groups: group A, regular-sized three-dimensionally (3D)-printed titanium cages; group B, regular-sized polyetheretherketone cages; and group C, large-sized 3D-printed titanium cages. Radiographic parameters, including lumbar lordosis, segmental lordosis, anterior and posterior disc heights, disc angle, and foraminal height, were measured before and after surgery. The fusion rate and severity of cage subsidence were compared between the groups., Results: No significant differences were noted in the demographic data or radiographic parameters between the groups. The fusion rate on 1-year postoperative computed tomography was comparable between the groups. The cage subsidence rate was significantly lower in group C than in group A (41.9% vs. 16.7%, p=0.044). The severity of cage subsidence was significantly lower in group C (0.93±0.83) than in groups A (2.20±1.84, p=0.004) and B (1.79±1.47, p=0.048)., Conclusion: Cage materials did not affect the 1-year postoperative outcomes of BE-TLIF; however, subsidence was markedly reduced in large cages. Larger cages may provide more stable postoperative segments.
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- 2024
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123. Evaluation serum soluble interleukin 2 receptor with diagnosis and prognosis in canine solid tumour: 34 cases.
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NamKung H, Park SM, Im JH, Lim GH, Ryu MO, Seo KW, and Youn HY
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- Dogs, Animals, Male, Prognosis, Female, Biomarkers, Tumor blood, Case-Control Studies, Enzyme-Linked Immunosorbent Assay veterinary, Dog Diseases blood, Dog Diseases diagnosis, Receptors, Interleukin-2 blood, Neoplasms veterinary, Neoplasms diagnosis, Neoplasms blood
- Abstract
Background/aim: The soluble interleukin-2 receptor (sIL-2R) serve as a valuable biomarker for tumors in human patients, as its levels increase during the activation of T lymphocytes in clinical states such as inflammation, infection, and tumor. This study aimed to demonstrate that sIL-2R levels can be also elevated in dogs with tumors and evaluate its applicability as a diagnostic and prognostic factor in canine cancer patients., Patients and Methods: Serum was collected from 6 healthy dogs and 34 dogs with solid tumors. The concentration of sIL-2R was measured using a commercial enzyme-linked immunosorbent assay kit., Results: The median sIL-2R concentration was significantly higher in dogs with solid masses than in healthy dogs (117.3 vs 68.33 pg/ml, p = 0.016). The highest median sIL-2R concentration was found in dogs with malignant tumors, followed by those with benign tumors, and healthy dogs (119.6 vs 93.74 vs 68.33 pg/ml, respectively). In dogs with malignant tumors, the mortality rate was significantly higher in the group with high sIL-2R levels than in the group with low sIL-2R levels. Dogs with solid tumors, particularly those with malignant tumors, had higher concentrations of sIL-2R than healthy dogs. Among dogs with malignant tumors, a correlation between sIL-2R concentration and mortality rate was confirmed., Conclusion: Serum sIL-2R levels may be used to detect malignant tumors and serve as a prognostic factor in dogs with malignant tumors., (© 2024 The Author(s). Veterinary Medicine and Science published by John Wiley & Sons Ltd.)
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- 2024
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124. Unraveling flavivirus pathogenesis: from bulk to single-cell RNA-sequencing strategies.
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Kim D, Jeong S, and Park SM
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The global spread of flaviviruses has triggered major outbreaks worldwide, significantly impacting public health, society, and economies. This has intensified research efforts to understand how flaviviruses interact with their hosts and manipulate the immune system, underscoring the need for advanced research tools. RNA-sequencing (RNA-seq) technologies have revolutionized our understanding of flavivirus infections by offering transcriptome analysis to dissect the intricate dynamics of virus-host interactions. Bulk RNA-seq provides a macroscopic overview of gene expression changes in virus-infected cells, offering insights into infection mechanisms and host responses at the molecular level. Single-cell RNA sequencing (scRNAseq) provides unprecedented resolution by analyzing individual infected cells, revealing remarkable cellular heterogeneity within the host response. A particularly innovative advancement, virus-inclusive single-cell RNA sequencing (viscRNA-seq), addresses the challenges posed by non-polyadenylated flavivirus genomes, unveiling intricate details of virus-host interactions. In this review, we discuss the contributions of bulk RNA-seq, scRNA-seq, and viscRNA-seq to the field, exploring their implications in cell line experiments and studies on patients infected with various flavivirus species. Comprehensive transcriptome analyses from RNA-seq technologies are pivotal in accelerating the development of effective diagnostics and therapeutics, paving the way for innovative treatments and enhancing our preparedness for future outbreaks.
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- 2024
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125. Vitamin D deficiency as a risk factor for sudden cardiac arrest: A multicenter case-control study.
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Lee MJ, Jung H, Shin SD, Ro YS, Park JH, Roh YI, Jung WJ, Park JO, Park SM, Kim SC, Shin J, Kim YW, Hong JY, Ryu HH, Kim SJ, Park JH, Kim WY, Lee GT, and Oh SB
- Subjects
- Humans, Male, Female, Middle Aged, Case-Control Studies, Risk Assessment, Aged, Risk Factors, Vitamin D Deficiency blood, Vitamin D Deficiency epidemiology, Vitamin D Deficiency complications, Vitamin D Deficiency diagnosis, Vitamin D blood, Vitamin D analogs & derivatives, Death, Sudden, Cardiac epidemiology, Death, Sudden, Cardiac etiology, Death, Sudden, Cardiac prevention & control, Out-of-Hospital Cardiac Arrest blood, Out-of-Hospital Cardiac Arrest diagnosis, Out-of-Hospital Cardiac Arrest epidemiology, Out-of-Hospital Cardiac Arrest physiopathology, Biomarkers blood, Registries
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Background and Aims: Vitamin D is known to influence the risk of cardiovascular disease, which is a recognized risk factor for sudden cardiac arrest (SCA). However, the relationship between vitamin D and SCA is not well understood. Therefore, this study aims to investigate the association between vitamin D and SCA in out-of-hospital cardiac arrest (OHCA) patients compared to healthy controls., Methods and Results: Using the Phase II Cardiac Arrest Pursuit Trial with Unique Registration and Epidemiologic Surveillance (CAPTURES II) registry, a 1:1 propensity score-matched case-control study was conducted between 2017 and 2020. Serum 25-hydroxyvitamin D (vitamin D) levels in patients with OHCA (454 cases) and healthy controls (454 cases) were compared after matching for age, sex, cardiovascular risk factors, and lifestyle behaviors. The mean vitamin D levels were 14.5 ± 7.6 and 21.3 ± 8.3 ng/mL among SCA cases and controls, respectively. Logistic regression analysis was used adjusting for cardiovascular risk factors, lifestyle behaviors, corrected serum calcium levels, and estimated glomerular filtration rate (eGRF). The adjusted odds ratio (aOR) for vitamin D was 0.89 (95% confidence interval [CI] 0.87-0.91). The dose-response relationship demonstrated that vitamin D deficiency was associated with SCA incidence (severe deficiency, aOR 10.87, 95% CI 4.82-24.54; moderate deficiency, aOR 2.24, 95% CI 1.20-4.20)., Conclusion: Vitamin D deficiency was independently and strongly associated with an increased risk of SCA, irrespective of cardiovascular and lifestyle factors, corrected calcium levels, and eGFR., (Copyright © 2024 The Italian Diabetes Society, the Italian Society for the Study of Atherosclerosis, the Italian Society of Human Nutrition and the Department of Clinical Medicine and Surgery, Federico II University. Published by Elsevier B.V. All rights reserved.)
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- 2024
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126. Antibiotic exposure and depression incidence: A cohort study of the Korean population.
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Lee J, Park SJ, Choi S, Chang J, Park YJ, Jeong S, Son JS, Lee G, Ahn JC, Kim JA, and Park SM
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- Humans, Middle Aged, Male, Female, Republic of Korea epidemiology, Adult, Aged, Incidence, Retrospective Studies, Cohort Studies, Gastrointestinal Microbiome drug effects, Proportional Hazards Models, Anti-Bacterial Agents adverse effects, Depression epidemiology, Depression drug therapy
- Abstract
Recent research highlights the crucial role of the gut-brain axis in understanding depression etiologies. While burgeoning studies suggest an association between disruptions in gut microbiota and the development of depression, limited longitudinal studies have investigated this link. To address this gap, we conducted a retrospective cohort study using National Health Insurance Service-Health Screening Cohort (NHIS-HEALS) data in South Korea, involving 199,144 individuals aged 40-79. We examined the impact of cumulative antibiotic exposure (2004-2008) on subsequent depression incidence (2009-2013) by conducting Cox proportional hazards regressions. Our findings show an increasing depression risk with extended antibiotic exposure after adjusting for comorbidities and behavioral covariates. A broader antibiotic spectrum was associated with a higher depression risk. These trends persisted after adjusting for the original antibiotic indications. In conclusion, our study highlights the duration-dependent association between antibiotic exposure and increased depression risk, offering insights into depression etiologies and relevant novel therapeutic tools, and advocating for heightened antibiotic stewardship considering their impact on mental health., Competing Interests: Declaration of competing interest The authors have no competing interests to declare., (Copyright © 2024 Elsevier B.V. All rights reserved.)
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- 2024
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127. Prediction of intensive care unit admission using machine learning in patients with odontogenic infection.
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Yoon JH and Park SM
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Objectives: This study aimed to develop and validate a model to predict the need for intensive care unit (ICU) admission in patients with dental infections using an automated machine learning (ML) program called H2O-AutoML., Materials and Methods: Two models were created using only the information available at the initial examination. Model 1 was parameterized with only clinical symptoms and blood tests, excluding contrast-enhanced multi-detector computed tomography (MDCT) images available at the initial visit, whereas model 2 was created with the addition of the MDCT information to the model 1 parameters. Although model 2 was expected to be superior to model 1, we wanted to independently determine this conclusion. A total of 210 patients who visited the Department of Oral and Maxillofacial Surgery at the Dankook University Dental Hospital from March 2013 to August 2023 was included in this study. The patients' demographic characteristics (sex, age, and place of residence), systemic factors (hypertension, diabetes mellitus [DM], kidney disease, liver disease, heart disease, anticoagulation therapy, and osteoporosis), local factors (smoking status, site of infection, postoperative wound infection, dysphagia, odynophagia, and trismus), and factors known from initial blood tests were obtained from their medical charts and retrospectively reviewed., Results: The generalized linear model algorithm provided the best diagnostic accuracy, with an area under the receiver operating characteristic values of 0.8289 in model 1 and 0.8415 in model 2. In both models, the C-reactive protein level was the most important variable, followed by DM., Conclusion: This study provides unprecedented data on the use of ML for successful prediction of ICU admission based on initial examination results. These findings will considerably contribute to the development of the field of dentistry, especially oral and maxillofacial surgery.
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- 2024
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128. Association between antibiotics use and osteoporotic fracture risk: a nationally representative retrospective cohort study.
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Lee JW, Park SJ, Park YJ, Jeong S, Song J, Kim HJ, Chang J, Kim KH, Kim JS, Oh YH, Cho Y, and Park SM
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- Humans, Female, Retrospective Studies, Male, Middle Aged, Aged, Republic of Korea epidemiology, Risk Factors, Incidence, Osteoporotic Fractures epidemiology, Anti-Bacterial Agents adverse effects, Anti-Bacterial Agents therapeutic use
- Abstract
This population-based retrospective cohort study aimed to estimate the association between antibiotic exposure and osteoporotic fracture risk. Long-term antibiotic use was associated with the risk of osteoporotic fracture. An increase in the number of antibiotic classes prescribed may also be associated with an increased osteoporotic fracture risk., Purpose: This study aims to examine the association between antibiotic usage and osteoporotic fractures in a large cohort of Korean adults, with a specific focus on the duration of antibiotic exposure and the number of antibiotic classes used., Methods: This retrospective cohort study from the National Health Insurance Service-National Health Screening Cohort (NHIS-HEALS) database from January 1, 2002, to December 31, 2019, included 167,370 Korean adults aged 50 years or older (mean [SD] age, 59.3 [7.82] years; 65,425 [39.09%] women). The cumulative antibiotic prescription days and the classes of antibiotics prescribed between 2004 and 2008 were exposure variables, respectively. The main outcome was a newly diagnosed osteoporotic fracture during follow-up. Cox proportional hazard regression was used to determine the adjusted hazard ratios (aHRs) and 95% confidence intervals (CIs) for the incident osteoporotic fractures associated with antibiotic exposure., Results: The antibiotic user group with 91 days had a higher risk of osteoporotic fracture in comparison to the antibiotic non-user group (aHR, 1.12; 95% CI, 1.03-1.21). Additionally, those who used more than four different antibiotic classes had an elevated risk of osteoporotic fracture compared to the non-user group (aHR, 1.10; 95% CI, 1.02-1.18)., Conclusion: This extensive population-based cohort study conducted on a large population has identified an association between the utilization of antibiotics and an elevated risk of osteoporotic fractures. The cumulative days exposed to antibiotics and osteoporotic fractures may be positively associated., (© 2024. The Author(s).)
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- 2024
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129. Comprehensive analysis of nationwide anticancer drug-related complications in Korea: incidence, types, and cancer-specific considerations in contemporary oncology.
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Jeong J, Park S, Heo KN, Park SM, Min S, Ah YM, Han JM, and Lee JY
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Background: The rising global incidence of cancer has increased the demand for chemotherapy, which is a crucial treatment modality. Recent advancements in cancer treatment, including targeted agents and immunotherapy, have introduced complications owing to their specific mechanisms. However, comprehensive studies of the combined complications of these approaches are lacking., Objectives: This study aimed to comprehensively assess and analyze the overall incidence of anticancer drug-related complications in a nationwide patient cohort, utilizing a customized National Health Insurance Sharing Service database in Korea., Design: Retrospective cohort study., Methods: We included patients who were prescribed anticancer drugs (excluding endocrine agents) and diagnosed with cancer. For the type of cancer classification, the International Statistical Classification of Diseases and Related Health Problems, Tenth Revision (ICD-10) was used and anticancer drugs were classified based on the Anatomical Therapeutic Chemical code. We classified cancer into 18 types based on the ICD-10 code and delineated cancer-related complications into 12 categories. Complications included hematological, gastrointestinal, infectious, cardiovascular, major bleeding, endocrine, neurotoxic, nephrotoxic, dermatological, pulmonary, musculoskeletal, and hepatotoxic effects., Result: We included 294,544 patients diagnosed with cancer and administered anticancer drugs between 2016 and 2018, with follow-up continuing until 2021. We identified 486,929 anticancer drug-related complications, with an incidence of 1843.6 per 1000 person-years (PY). Anemia was the most common complication, with a rate of 763.7 per 1000 PY, followed by febrile neutropenia (295.7) and nausea/vomiting (246.9). Several complications peaked during the first months following the initiation of anticancer drug therapy; however, herpes, skin infection, heart failure, and peripheral neuropathy peaked at 6-12 months. Among major cancers, breast cancer had the lowest overall incidence of complications. Targeted therapies revealed lower complication rates than cytotoxic chemotherapy; however, they also required careful monitoring of rash., Conclusion: This study highlights the importance of the proactive management of anticancer drug-related complications for patient care improvement., Competing Interests: The authors declare that there is no conflict of interest., (© The Author(s), 2024.)
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- 2024
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130. A Low-Power Optoelectronic Receiver IC for Short-Range LiDAR Sensors in 180 nm CMOS.
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Choi S, Chon Y, and Park SM
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This paper presents a novel power-efficient topology for receivers in short-range LiDAR sensors. Conventionally, LiDAR sensors exploit complex time-to-digital converters (TDCs) for time-of-flight (ToF) distance measurements, thereby frequently leading to intricate circuit designs and persistent walk error issues. However, this work features a fully differential trans-impedance amplifier with on-chip avalanche photodiodes as optical detectors so that the need of the following post-amplifiers and output buffers can be eliminated, thus considerably reducing power consumption. Also, the combination of amplitude-to-voltage (A2V) and time-to-voltage (T2V) converters are exploited to replace the complicated TDC circuit. The A2V converter efficiently processes weak input photocurrents ranging from 1 to 50 μA
pp which corresponds to a maximum distance of 22.8 m, while the T2V converter handles relatively larger photocurrents from 40 μApp to 5.8 mApp for distances as short as 30 cm. The post-layout simulations confirm that the proposed LiDAR receiver can detect optical pulses over the range of 0.3 to 22.8 m with a low power dissipation of 10 mW from a single 1.8 V supply. This topology offers significant improvements in simplifying the receiver design and reducing the power consumption, providing a more efficient and accurate solution that is highly suitable for short-range LiDAR sensor applications.- Published
- 2024
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131. Intravenous injection of allogenic canine mesenchymal stem cells in 40 client-owned dogs: a safety assessment in veterinary clinical trials.
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Cho HS, Song WJ, Nam A, Li Q, An JH, Ahn JO, Kim HT, Park SM, Ryu MO, Kim MC, Kim JH, and Youn HY
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- Animals, Dogs, Female, Male, Retrospective Studies, Mesenchymal Stem Cells, Transplantation, Homologous veterinary, Injections, Intravenous veterinary, Adipose Tissue cytology, Mesenchymal Stem Cell Transplantation veterinary, Mesenchymal Stem Cell Transplantation adverse effects, Mesenchymal Stem Cell Transplantation methods, Dog Diseases therapy
- Abstract
Background: The aim of this study was to evaluate the adverse effects of allogeneic mesenchymal stem cells (MSCs) transplanted via intravenous infusion in dogs and examine their safety. We performed a retrospective analysis of various clinical assessments, including physical examination, blood tests, and radiographs, and monitored the formation of neoplasms during a 6-month follow-up period in 40 client-owned dogs that received intravenous infusion of adipose tissue-derived MSCs (AT-MSCs) for the treatment of various underlying diseases between 2012 and 2018., Results: No significant adverse effects of MSC therapy were detected by clinical assessment, blood tests, or radiographic examination in the 6-month follow-up period after the first MSC treatment. Additionally no new neoplasms were observed during this period., Conclusions: To our knowledge, this study is the first to evaluate the safety aspects (≥ 6 months) associated with intravenous allogeneic AT-MSC infusion. These results suggest that allogenic AT-MSC infusion could be a useful and relatively safe therapeutic approach in canines., (© 2024. The Author(s).)
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- 2024
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132. Deferoxamine preconditioning of canine stem cell derived extracellular vesicles alleviates inflammation in an EAE mouse model through STAT3 regulation.
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Park SM, Oh YH, Lim GH, Yun GH, Kim KB, An JH, Seo KW, and Youn HY
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- Animals, Mice, Dogs, Female, Disease Models, Animal, Encephalomyelitis, Autoimmune, Experimental pathology, Encephalomyelitis, Autoimmune, Experimental drug therapy, Encephalomyelitis, Autoimmune, Experimental metabolism, Extracellular Vesicles metabolism, Extracellular Vesicles transplantation, STAT3 Transcription Factor metabolism, T-Lymphocytes, Regulatory immunology, T-Lymphocytes, Regulatory drug effects, T-Lymphocytes, Regulatory metabolism, Deferoxamine pharmacology, Deferoxamine therapeutic use, Mesenchymal Stem Cells metabolism, Inflammation pathology
- Abstract
Extracellular vesicles (EVs) from mesenchymal stem cells (MSCs), specifically those preconditioned with deferoxamine (DFO) in canine adipose tissue-derived MSCs (cAT-MSCs), were explored for treating autoimmune diseases. This study assessed the effects of DFO-preconditioned EVs (EV
DFO ) in an experimental autoimmune encephalomyelitis (EAE) mouse model. cAT-MSCs were treated with DFO for 48 h, after which EVs were isolated. EAE mice received intranasal EV or EVDFO treatments and were euthanized following histopathologic analysis; RNA and protein expression levels were measured. Histologically, EV and EVDFO groups showed a significant reduction in inflammatory cell infiltration and demyelination. Immunofluorescence revealed increased CD206 and Foxp3 expression, indicating elevated M2 macrophages and regulatory T (Treg) cells, particularly in the EVDFO group. Treg cells also notably increased in the spleen of EVDFO -treated mice. STAT3 and pSTAT3 proteins were upregulated in the EAE groups compared to the naïve group. However, following EV treatment, STAT3 expression decreased compared to the EAE group, whereas pSTAT3 expression was similar in both the EV and EAE groups. In conclusion, EVDFO treatment resulted in reduced STAT3 expression, suggesting its role in T cell regulation and the potential of EVDFO in modulating the STAT3 pathway for reducing inflammation more effectively than non-preconditioned EVs., (© 2024. The Author(s).)- Published
- 2024
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133. Impact of Teriparatide and Denosumab on Clinical and Radiographic Outcomes in Osteoporotic Vertebral Compression Fractures.
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Kwon BT, Ham DW, Park SM, Kim HJ, and Yeom JS
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- Humans, Female, Male, Aged, Retrospective Studies, Aged, 80 and over, Treatment Outcome, Middle Aged, Quality of Life, Bone Density drug effects, Teriparatide therapeutic use, Denosumab therapeutic use, Osteoporotic Fractures prevention & control, Osteoporotic Fractures drug therapy, Osteoporotic Fractures etiology, Fractures, Compression etiology, Fractures, Compression drug therapy, Spinal Fractures etiology, Spinal Fractures prevention & control, Bone Density Conservation Agents therapeutic use
- Abstract
Background and Objectives: Osteoporotic vertebral compression fractures (OVCFs) are prevalent among the elderly, often leading to significant pain, morbidity, and mortality. Effective management of underlying osteoporosis is essential to prevent subsequent fractures. This study aimed to compare the clinical and radiographic outcomes of teriparatide and denosumab treatments in patients with OVCFs to determine their relative effectiveness in improving patient outcomes. Materials and Methods: This retrospective study included 78 patients diagnosed with an acute thoracolumbar OVCF who received either teriparatide (35 patients) or denosumab (43 patients) within three months of a fracture. Clinical outcomes were assessed using the visual analog scale (VAS) for back pain, Oswestry disability index (ODI), and EQ-5D quality of life scores at baseline, 6 months, and 12 months. Bone mineral density (BMD) and radiographic outcomes were evaluated initially and at 12 months post-treatment. Results: Both treatment groups demonstrated significant improvements in VAS, ODI, and EQ-5D scores over 12 months. No significant differences were observed between the teriparatide and denosumab groups in terms of clinical outcomes or radiographic measurements at any time point. Fracture union and BMD improvements were similarly observed in both groups. The teriparatide group had a lower baseline BMD, but this did not affect the overall outcomes. Conclusions: Both teriparatide and denosumab are effective in improving clinical and radiographic outcomes in patients with OVCFs. Despite concerns about denosumab's potential to hinder fracture healing, our study found no significant differences between the two treatments. These findings support the use of denosumab for early treatment of OVCFs to prevent subsequent fractures without compromising fracture healing. Further prospective studies are needed to confirm these results.
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- 2024
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134. Photothermal treatment-based heat stress regulates function of myeloid-derived suppressor cells.
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Lee MS, Park SM, and Kim YJ
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- Animals, Mice, Cell Line, Tumor, Antigen-Presenting Cells immunology, Antigen-Presenting Cells metabolism, HSP70 Heat-Shock Proteins metabolism, Hyperthermia, Induced methods, Mice, Inbred C57BL, Female, Humans, Myeloid-Derived Suppressor Cells metabolism, Myeloid-Derived Suppressor Cells immunology, Heat-Shock Response, Photothermal Therapy methods
- Abstract
Photothermal therapy is an alternative cancer therapy that uses a photothermal agent with light irradiation to induce fatal hyperthermia in cancer cells. In a previous study, we found that ex vivo photothermal (PT) treatment induced expression of heat shock proteins (HSPs), such as HSP70, HSP27, and HSP90, in cancer cells; moreover, immunization with lysates from PT-treated tumor cells resulted in significant tumor growth inhibition in tumor-bearing mice. In this study, we hypothesized that sublethal PT treatment of antigen-presenting cells regulates their immunogenicity. We observed the upregulation of expression of intracellular HSP70 and surface activation markers, such as CD40, CD80, CD86, and MHC class II, in sublethal PT-treated cells. The protumoral activity of myeloid-derived suppressor cells (MDSCs) was reduced by sublethal hyperthermia. Furthermore, poorly immunogenic MDSCs were converted into immunogenic antigen-presenting cells by PT treatment. The differences in immunogenicity between MDSCs untreated or treated with the PT technique were evaluated using the Student's t-test or Mann-Whitney rank sum test. Collectively, direct hyperthermic treatment resulted in phenotypic changes and the functional regulation of immune cells., (© 2024. The Author(s).)
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- 2024
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135. Interfacial Engineering for Controlled Crystal Mosaicity in Single-Crystalline Perovskite Films.
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Park SM, Park SW, Jin H, Baek D, Cha J, Chae WS, Lee TK, and Kim M
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Organic-inorganic hybrid perovskites have attracted significant attention for optoelectronic applications due to their efficient photoconversion properties. However, grain boundaries and irregular crystal orientations in polycrystalline films remain issues. This study presents a method for producing crystalline-orientation-controlled perovskite single-crystal films using retarded solvent evaporation. It is shown that single-crystal films, grown via inverse temperature crystallization within a confined space, exhibit enhanced optoelectronic property. Using interfacial polymer layer, this method produces high-quality perovskite single-crystalline films with varying crystal orientations. Density functional theory calculations confirm favorable adsorption energies for (110) surfaces with methylammonium iodide and PbI
2 terminations on poly(3-hexylthiophene), and stronger adsorption for (224) surfaces with I and methylammonium terminations on polystyrene, influenced by repulsive forces between the thiophene group and the perovskite surface. The correlation between charge transport characteristics and perovskite single-crystalline properties highlights potential advancements in perovskite optoelectronics, improving device performance and reliability., (© 2024 Wiley‐VCH GmbH.)- Published
- 2024
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136. Comprehensive EHMT1 variants analysis broadens genotype-phenotype associations and molecular mechanisms in Kleefstra syndrome.
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Rots D, Bouman A, Yamada A, Levy M, Dingemans AJM, de Vries BBA, Ruiterkamp-Versteeg M, de Leeuw N, Ockeloen CW, Pfundt R, de Boer E, Kummeling J, van Bon B, van Bokhoven H, Kasri NN, Venselaar H, Alders M, Kerkhof J, McConkey H, Kuechler A, Elffers B, van Beeck Calkoen R, Hofman S, Smith A, Valenzuela MI, Srivastava S, Frazier Z, Maystadt I, Piscopo C, Merla G, Balasubramanian M, Santen GWE, Metcalfe K, Park SM, Pasquier L, Banka S, Donnai D, Weisberg D, Strobl-Wildemann G, Wagemans A, Vreeburg M, Baralle D, Foulds N, Scurr I, Brunetti-Pierri N, van Hagen JM, Bijlsma EK, Hakonen AH, Courage C, Genevieve D, Pinson L, Forzano F, Deshpande C, Kluskens ML, Welling L, Plomp AS, Vanhoutte EK, Kalsner L, Hol JA, Putoux A, Lazier J, Vasudevan P, Ames E, O'Shea J, Lederer D, Fleischer J, O'Connor M, Pauly M, Vasileiou G, Reis A, Kiraly-Borri C, Bouman A, Barnett C, Nezarati M, Borch L, Beunders G, Özcan K, Miot S, Volker-Touw CML, van Gassen KLI, Cappuccio G, Janssens K, Mor N, Shomer I, Dominissini D, Tedder ML, Muir AM, Sadikovic B, Brunner HG, Vissers LELM, Shinkai Y, and Kleefstra T
- Subjects
- Humans, Female, Male, Child, Child, Preschool, Histocompatibility Antigens genetics, Adolescent, Heart Defects, Congenital genetics, Haploinsufficiency genetics, Mutation, Histone-Lysine N-Methyltransferase genetics, Chromosome Deletion, Craniofacial Abnormalities genetics, Intellectual Disability genetics, Genetic Association Studies, Chromosomes, Human, Pair 9 genetics, DNA Methylation genetics, Phenotype
- Abstract
The shift to a genotype-first approach in genetic diagnostics has revolutionized our understanding of neurodevelopmental disorders, expanding both their molecular and phenotypic spectra. Kleefstra syndrome (KLEFS1) is caused by EHMT1 haploinsufficiency and exhibits broad clinical manifestations. EHMT1 encodes euchromatic histone methyltransferase-1-a pivotal component of the epigenetic machinery. We have recruited 209 individuals with a rare EHMT1 variant and performed comprehensive molecular in silico and in vitro testing alongside DNA methylation (DNAm) signature analysis for the identified variants. We (re)classified the variants as likely pathogenic/pathogenic (molecularly confirming Kleefstra syndrome) in 191 individuals. We provide an updated and broader clinical and molecular spectrum of Kleefstra syndrome, including individuals with normal intelligence and familial occurrence. Analysis of the EHMT1 variants reveals a broad range of molecular effects and their associated phenotypes, including distinct genotype-phenotype associations. Notably, we showed that disruption of the "reader" function of the ankyrin repeat domain by a protein altering variant (PAV) results in a KLEFS1-specific DNAm signature and milder phenotype, while disruption of only "writer" methyltransferase activity of the SET domain does not result in KLEFS1 DNAm signature or typical KLEFS1 phenotype. Similarly, N-terminal truncating variants result in a mild phenotype without the DNAm signature. We demonstrate how comprehensive variant analysis can provide insights into pathogenesis of the disorder and DNAm signature. In summary, this study presents a comprehensive overview of KLEFS1 and EHMT1, revealing its broader spectrum and deepening our understanding of its molecular mechanisms, thereby informing accurate variant interpretation, counseling, and clinical management., Competing Interests: Declaration of interests A.M.M. is an employee of GeneDx, LLC. B.S. is a shareholder in EpiSign Inc., a biotechnology company involved in commercialization of EpiSign technology., (Copyright © 2024 American Society of Human Genetics. All rights reserved.)
- Published
- 2024
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137. Pathogenic variants in KMT2C result in a neurodevelopmental disorder distinct from Kleefstra and Kabuki syndromes.
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Rots D, Choufani S, Faundes V, Dingemans AJM, Joss S, Foulds N, Jones EA, Stewart S, Vasudevan P, Dabir T, Park SM, Jewell R, Brown N, Pais L, Jacquemont S, Jizi K, Ravenswaaij-Arts CMAV, Kroes HY, Stumpel CTRM, Ockeloen CW, Diets IJ, Nizon M, Vincent M, Cogné B, Besnard T, Kambouris M, Anderson E, Zackai EH, McDougall C, Donoghue S, O'Donnell-Luria A, Valivullah Z, O'Leary M, Srivastava S, Byers H, Leslie N, Mazzola S, Tiller GE, Vera M, Shen JJ, Boles R, Jain V, Brischoux-Boucher E, Kinning E, Simpson BN, Giltay JC, Harris J, Keren B, Guimier A, Marijon P, Vries BBA, Motter CS, Mendelsohn BA, Coffino S, Gerkes EH, Afenjar A, Visconti P, Bacchelli E, Maestrini E, Delahaye-Duriez A, Gooch C, Hendriks Y, Adams H, Thauvin-Robinet C, Josephi-Taylor S, Bertoli M, Parker MJ, Rutten JW, Caluseriu O, Vernon HJ, Kaziyev J, Zhu J, Kremen J, Frazier Z, Osika H, Breault D, Nair S, Lewis SME, Ceroni F, Viggiano M, Posar A, Brittain H, Giovanna T, Giulia G, Quteineh L, Ha-Vinh Leuchter R, Zonneveld-Huijssoon E, Mellado C, Marey I, Coudert A, Aracena Alvarez MI, Kennis MGP, Bouman A, Roifman M, Amorós Rodríguez MI, Ortigoza-Escobar JD, Vernimmen V, Sinnema M, Pfundt R, Brunner HG, Vissers LELM, Kleefstra T, Weksberg R, and Banka S
- Subjects
- Humans, Male, Female, Child, Child, Preschool, Neoplasm Proteins genetics, Adolescent, Hypertrichosis genetics, Mutation, Failure to Thrive genetics, Histone-Lysine N-Methyltransferase genetics, Heart Defects, Congenital, Abnormalities, Multiple genetics, Vestibular Diseases genetics, Intellectual Disability genetics, Face abnormalities, Face pathology, DNA-Binding Proteins genetics, Hematologic Diseases genetics, Neurodevelopmental Disorders genetics, Craniofacial Abnormalities genetics, Chromosome Deletion, Chromosomes, Human, Pair 9 genetics, DNA Methylation genetics
- Abstract
Trithorax-related H3K4 methyltransferases, KMT2C and KMT2D, are critical epigenetic modifiers. Haploinsufficiency of KMT2C was only recently recognized as a cause of neurodevelopmental disorder (NDD), so the clinical and molecular spectrums of the KMT2C-related NDD (now designated as Kleefstra syndrome 2) are largely unknown. We ascertained 98 individuals with rare KMT2C variants, including 75 with protein-truncating variants (PTVs). Notably, ∼15% of KMT2C PTVs were inherited. Although the most highly expressed KMT2C transcript consists of only the last four exons, pathogenic PTVs were found in almost all the exons of this large gene. KMT2C variant interpretation can be challenging due to segmental duplications and clonal hematopoesis-induced artifacts. Using samples from 27 affected individuals, divided into discovery and validation cohorts, we generated a moderate strength disorder-specific KMT2C DNA methylation (DNAm) signature and demonstrate its utility in classifying non-truncating variants. Based on 81 individuals with pathogenic/likely pathogenic variants, we demonstrate that the KMT2C-related NDD is characterized by developmental delay, intellectual disability, behavioral and psychiatric problems, hypotonia, seizures, short stature, and other comorbidities. The facial module of PhenoScore, applied to photographs of 34 affected individuals, reveals that the KMT2C-related facial gestalt is significantly different from the general NDD population. Finally, using PhenoScore and DNAm signatures, we demonstrate that the KMT2C-related NDD is clinically and epigenetically distinct from Kleefstra and Kabuki syndromes. Overall, we define the clinical features, molecular spectrum, and DNAm signature of the KMT2C-related NDD and demonstrate they are distinct from Kleefstra and Kabuki syndromes highlighting the need to rename this condition., Competing Interests: Declaration of interests R.W. is a consultant (equity) for Alamya Health., (Copyright © 2024 American Society of Human Genetics. All rights reserved.)
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- 2024
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138. Novel hypothesis for infant methemoglobinemia: Survival and metabolism of nitrite-producers from vegetables under gastrointestinal stress and intestinal adhesion.
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Park SM and Rhee MS
- Subjects
- Humans, Infant, Infant, Newborn, Bacterial Adhesion, Bile Acids and Salts metabolism, Gastrointestinal Tract microbiology, Gastrointestinal Tract metabolism, Hydrogen-Ion Concentration, Gastrointestinal Microbiome, Vegetables microbiology, Methemoglobinemia metabolism, Nitrites metabolism
- Abstract
Infants have digestive environments that are more favorable for microbial proliferation and subsequent endogenous nitrite production than those of adults, but direct evidence of this has been lacking. In this study, we propose a novel epidemiology of infant methemoglobinemia by demonstrating the risk posed by nitrite-producers in the gastrointestinal tract. Nitrite-producers from vegetables (n = 323) were exposed to stress factors of the gastrointestinal environment (gastric pH, intestinal bile salts, anaerobic atmosphere) reflecting 4 different postnatal age periods (Neonate, ≤1 month; Infant A, 1-3 months; Infant B, 3-6 months; Infant C, 6-12 months). "High-risk" strains with a nitrate-to-nitrite conversion rate of ≥1.3 %, the minimum rate corresponding to nitrite overproduction, under the Neonate stress condition were analyzed for intestinal adhesion. Among all the phyla, Pseudomonadota achieved the highest survival (P < 0.05; survival rate of 51.3-71.8 %). Possible cross-protection against bile resistance due to acid shock was observed for all the phyla. All the high-risk strains exhibited moderate autoaggregation (14.0-36.4 %), whereas only a few exhibited satisfactory surface hydrophobicity (>40 %). The Pantoea agglomerans strain strongly adhered to Caco-2 cells (7.4 ± 1.1 %). This study showed the ability of the Pantoea, Enterobacter, and Klebsiella strains to survive under gastrointestinal stress for ≤12 months, to excessively produce nitrite under neonatal stress conditions, and to settle in the human intestine. To our knowledge, this is the first study to reveal the role of the natural flora of vegetables in the epidemiology of infant methemoglobinemia through a multilateral approach., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Ltd. All rights reserved.)
- Published
- 2024
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139. Nickel Oxide Hole Injection Layers for Balanced Charge Injection in Quantum Dot Light-Emitting Diodes.
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Wan H, Jung ED, Zhu T, Park SM, Pina JM, Xia P, Bertens K, Wang YK, Atan O, Chen H, Hou Y, Lee S, Won YH, Kim KH, Hoogland S, and Sargent EH
- Abstract
Quantum dot (QD) light-emitting diodes (QLEDs) are promising for next-generation displays, but suffer from carrier imbalance arising from lower hole injection compared to electron injection. A defect engineering strategy is reported to tackle transport limitations in nickel oxide-based inorganic hole-injection layers (HILs) and find that hole injection is able to enhance in high-performance InP QLEDs using the newly designed material. Through optoelectronic simulations, how the electronic properties of NiO
x affect hole injection efficiency into an InP QD layer, finding that efficient hole injection depends on lowering the hole injection barrier and enhancing the acceptor density of NiOx is explored. Li doping and oxygen enriching are identified as effective strategies to control intrinsic and extrinsic defects in NiOx , thereby increasing acceptor density, as evidenced by density functional theory calculations and experimental validation. With fine-tuned inorganic HIL, InP QLEDs exhibit a luminance of 45 200 cd m-2 and an external quantum efficiency of 19.9%, surpassing previous inorganic HIL-based QLEDs. This study provides a path to designing inorganic materials for more efficient and sustainable lighting and display technologies., (© 2024 Wiley‐VCH GmbH.)- Published
- 2024
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140. On-Demand Crack Formation on DNA Film via Organic Solvent-Induced Dehydration.
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Lee S, Moon H, Kim J, Ryu S, Park SM, and Yoon DK
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- Nanostructures chemistry, Water chemistry, Desiccation, Printing, Three-Dimensional, DNA chemistry, Solvents chemistry, Furans chemistry
- Abstract
Crack is found on the soil when severe drought comes, which inspires the idea to rationalize patterning applications using dried deoxyribonucleic acid (DNA) film. DNA is one of the massively produced biomaterials in nature, showing the lyotropic liquid crystal (LC) phase in highly concentrated conditions. DNA nanostructures in the hydrated condition can be orientation controlled, which can be extended to make dryinginduced cracks. The controlled crack generation in oriented DNA films by inducing mechanical fracture through organic solvent-induced dehydration (OSID) using tetrahydrofuran (THF) is explored. The corresponding simulations show a strong correlation between the long axis of DNA due to the shrinkage during the dehydration and in the direction of crack propagation. The cracks are controlled by simple brushing and a 3D printing method. This facile way of aligning cracks will be used in potential patterning applications., (© 2024 The Authors. Advanced Materials published by Wiley‐VCH GmbH.)
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- 2024
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141. Validity of fatty liver prediction scores for diagnosis of fatty liver by Fibroscan.
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Jeong S, Park SJ, Na SK, Park SM, Song BC, and Oh YH
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- Humans, Female, Male, Middle Aged, Republic of Korea epidemiology, Adult, Reproducibility of Results, ROC Curve, Risk Factors, Alcohol Drinking adverse effects, Alcohol Drinking epidemiology, Liver diagnostic imaging, Aged, Elasticity Imaging Techniques, Non-alcoholic Fatty Liver Disease diagnostic imaging, Non-alcoholic Fatty Liver Disease complications, Non-alcoholic Fatty Liver Disease diagnosis, Predictive Value of Tests
- Abstract
Background: The Korea National Health and Nutrition Examination Survey nonalcoholic fatty liver disease (K-NAFLD) score was recently developed with the intent to operationally define nonalcoholic fatty liver disease (NAFLD). However, there remained an external validation that confirmed its diagnostic performance, especially in patients with alcohol consumption or hepatitis virus infection., Methods: Diagnostic accuracy of the K-NAFLD score was evaluated in a hospital-based cohort consisting of 1388 participants who received Fibroscan®. Multivariate-adjusted logistic regression models and the contrast estimation of receiver operating characteristic curves were used for validation of the K-NAFLD score, fatty liver index (FLI), and hepatic steatosis index (HSI)., Results: K-NAFLD-moderate [adjusted odds ratio (aOR) = 2.53, 95% confidence interval (CI): 1.13-5.65] and K-NAFLD-high (aOR = 4.14, 95% CI: 1.69-10.13) groups showed higher risks of fatty liver compared to the K-NAFLD-low group after adjustments for demographic and clinical characteristics, and FLI-moderate and FLI-high groups revealed aORs of 2.05 (95% CI: 1.22-3.43) and 1.51 (95% CI: 0.78-2.90), respectively. In addition, the HSI was less predictive for Fibroscan®-defined fatty liver. Both K-NAFLD and FLI also demonstrated high accuracy in the prediction of fatty liver in patients with alcohol consumption and chronic hepatitis virus infection, and the adjusted area under curve values were comparable between K-NAFLD and FLI., Conclusions: Externally validation of the K-NAFLD and FLI showed that these scores may be a useful, noninvasive, and non-imaging modality for the identification of fatty liver. In addition, these scores also predicted fatty liver in patients with alcohol consumption and chronic hepatitis virus infection., (Copyright © 2023 First Affiliated Hospital, Zhejiang University School of Medicine in China. Published by Elsevier B.V. All rights reserved.)
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- 2024
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142. Serial Vascular Responses of Balloon-Expandable Stent With Biodegradable Film-Type Graft in a Rabbit Iliac Artery Dissection Model (BioGard Study).
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Park SM, Choi KC, Lee BH, Yoo SY, and Kim CY
- Abstract
Background and Objectives: Arterial dissection during endovascular therapy rarely occurs but can be lethal. A fabric-based covered graft stents yield poor clinical outcomes. A novel balloon-expandable stent with biodegradable film graft for overcoming these issues was evaluated in a rabbit iliac artery model., Method: Eighteen rabbits with iliac artery dissections were induced by balloon over-inflation on angiography (Ellis type 2 or 3) and treated using the test device (3.0×24 mm). Subsequently, survived twelve animals underwent histologic examinations and micro-computed tomography (CT) at 0, 2, 4, and 8 weeks and 3, 6, 9, and 12 months and angiography at one-year., Results: There were no adverse cardiovascular events during the one-year. Early-stage histologic examination revealed complete sealing of disrupted vessels by the device, exhibiting mural hematoma, peri-stent red thrombi, and dense infiltration of inflammatory cells. Mid- and long-term histologic examination showed patent stents with neointimal hyperplasia over the stents (% area stenosis: 11.8 at 2 weeks, 26.1 at 1 month, 29.7 at 3 months, 49.2 at 9 months, and 51.0 at 1 year), along with mild peri-strut inflammatory response (Grade: 1-2 at mid-term and 0-1 at long-term). The graft film became scarcely visible after six months. Both CT and angiography revealed no instances of thrombotic occlusion or in-stent restenosis (% diameter stenosis: 5.7 at 2 weeks, 12.3 at 1 month, 14.2 at 3 months, 25.1 at 9 months, and 26.6 at 1 year)., Conclusions: The novel balloon-expandable stent with a biodegradable film graft demonstrates feasibility in managing severe artery dissection and preventing lethal vascular events in animal model., Competing Interests: Apart from the research support received from Genoss, Co., Ltd. (Suwon, South Korea), which includes technology and manufacturing details describe in the funding disclosure, there are no any other relationships or conflicting issues., (Copyright © 2024. The Korean Society of Cardiology.)
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- 2024
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143. Environmentally Robust Triboelectric Tire Monitoring System for Self-Powered Driving Information Recognition via Hybrid Deep Learning in Time-Frequency Representation.
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Kim B, Song JY, Kim DY, Cho MW, Park JG, Choi D, Lee C, and Park SM
- Abstract
Developing a robust artificial intelligence of things (AIoT) system with a self-powered triboelectric sensor for harsh environment is challenging because environmental fluctuations are reflected in triboelectric signals. This study presents an environmentally robust triboelectric tire monitoring system with deep learning to capture driving information in the triboelectric signals generated from tire-road friction. The optimization of the process and structure of a laser-induced graphene (LIG) electrode layer in the triboelectric tire is conducted, enabling the tire to detect universal driving information for vehicles/robotic mobility, including rotation speeds of 200-2000 rpm and contact fractions of line. Employing a hybrid model combining short-term Fourier transform with a convolution neural network-long short-term memory, the LIG-based triboelectric tire monitoring (LTTM) system decouples the driving information, such as traffic lines and road states, from varied environmental conditions of humidity (10%-90%) and temperatures (50-70 °C). The real-time line and road state recognition of the LTTM system is confirmed on a mobile platform across diverse environmental conditions, including fog, dampness, intense sunlight, and heat shimmer. This work provides an environmentally robust monitoring AIoT system by introducing a self-powered triboelectric sensor and hybrid deep learning for smart mobility., (© 2024 Wiley‐VCH GmbH.)
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- 2024
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144. Bioprinting-Assisted Tissue Assembly for Structural and Functional Modulation of Engineered Heart Tissue Mimicking Left Ventricular Myocardial Fiber Orientation.
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Hwang DG, Choi H, Yong U, Kim D, Kang W, Park SM, and Jang J
- Subjects
- Animals, Tissue Scaffolds chemistry, Myocardium cytology, Myocardium metabolism, Humans, Myocytes, Cardiac cytology, Tissue Engineering methods, Bioprinting methods, Heart Ventricles
- Abstract
Left ventricular twist is influenced by the unique oriented structure of myocardial fibers. Replicating this intricate structural-functional relationship in an in vitro heart model remains challenging, mainly due to the difficulties in achieving a complex structure with synchrony between layers. This study introduces a novel approach through the utilization of bioprinting-assisted tissue assembly (BATA)-a synergistic integration of bioprinting and tissue assembly strategies. By flexibly manufacturing tissue modules and assembly platforms, BATA can create structures that traditional methods find difficult to achieve. This approach integrates engineered heart tissue (EHT) modules, each with intrinsic functional and structural characteristics, into a layered, multi-oriented tissue in a controlled manner. EHTs assembled in different orientations exhibit various contractile forces and electrical signal patterns. The BATA is capable of constructing complex myocardial fiber orientations within a chamber-like structure (MoCha). MoCha replicates the native cardiac architecture by exhibiting three layers and three alignment directions, and it reproduces the left ventricular twist by exhibiting synchronized contraction between layers and mimicking the native cardiac architecture. The potential of BATA extends to engineering tissues capable of constructing and functioning as complete organs on a large scale. This advancement holds the promise of realizing future organ-on-demand technology., (© 2024 The Authors. Advanced Materials published by Wiley‐VCH GmbH.)
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- 2024
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145. Association of changes in predicted body composition with subsequent risk of dementia.
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Kim SM, Choi S, Lee G, Oh YH, Son JS, Ko A, Kim JS, Cho Y, Keum N, and Park SM
- Subjects
- Humans, Male, Female, Aged, Middle Aged, Republic of Korea epidemiology, Cohort Studies, Aged, 80 and over, Muscle, Skeletal, Adult, Risk Factors, Dementia epidemiology, Dementia etiology, Body Composition physiology, Body Mass Index
- Abstract
Objective: The effect of body composition change on the risk of dementia is not clear. This study analyzed the associations of changes in predicted lean body mass index (pLBMI), predicted appendicular skeletal muscle mass index (pASMI), and predicted body fat mass index (pBFMI) with the risk of dementia., Methods: In this nationwide cohort study, data were obtained from the Korean National Health Insurance Service database. The exposure was defined as changes in pLBMI, pASMI, and pBFMI derived from validated prediction equations. The outcome was dementia, defined based on the dementia diagnosis with prescription of anti-dementia medication. Cox proportional hazards regression analyses were performed to obtain the hazard ratio with a 95% confidence interval for risk of dementia according to changes in predicted body composition., Results: A total of 13,215,208 individuals with no prior record of dementia who underwent health screenings twice between 2009-2010 and 2011-2012 were included. A 1-kg/m
2 increase in pLBMI and pASMI had an association with reduced risk of dementia (aHR: 0.85, 95% CI 0.84-0.87; aHR: 0.70, 95% CI 0.69-0.72, respectively for men, and aHR: 0.69, 95% CI 0.67-0.71; aHR: 0.59, 95% CI 0.57-0.61, respectively for women). A 1-kg/m2 increase in pBFMI had an association with a raised risk of dementia (aHR: 1.19, 95% CI 1.17-1.21 for men and aHR: 1.53, 95% CI 1.48-1.57 for women). These results remained consistent regardless of sex or weight change., Interpretation: Increase in pLBMI or pASMI, or reduction in pBFMI was linked to lower risk of dementia., (© 2024 The Author(s). Annals of Clinical and Translational Neurology published by Wiley Periodicals LLC on behalf of American Neurological Association.)- Published
- 2024
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146. Cancer therapy-related cardiac dysfunction and the role of cardiovascular imaging: systemic review and opinion paper from the Working Group on Cardio-Oncology of the Korean Society of Cardiology.
- Author
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Cho I, You SC, Cha MJ, Hwang HJ, Cho EJ, Kim HJ, Park SM, Kim SE, Lee YG, Youn JC, Park CS, Shim CY, Chung WB, and Sohn IS
- Abstract
Cardio-oncology is a critical field due to the escalating significance of cardiovascular toxicity as a side effect of anticancer treatments. Cancer therapy-related cardiac dysfunction (CTRCD) is a prevalent condition associated with cardiovascular toxicity, necessitating effective strategies for prediction, monitoring, management, and tracking. This comprehensive review examines the definition and risk stratification of CTRCD, explores monitoring approaches during anticancer therapy, and highlights specific cardiovascular toxicities linked to various cancer treatments. These include anthracyclines, HER2-targeted agents, vascular endothelial growth factor inhibitors, immune checkpoint inhibitors, chimeric antigen receptor T-cell therapies, and tumor-infiltrating lymphocytes therapies. Incorporating the Korean data, this review offers insights into the regional nuances in managing CTRCD. Using systematic follow-up incorporating cardiovascular imaging and biomarkers, a better understanding and management of CTRCD can be achieved, optimizing the cardiovascular health of both cancer patients and survivors., (© 2024. The Author(s).)
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- 2024
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147. Systemic inflammation attenuates the repair of damaged brains through reduced phagocytic activity of monocytes infiltrating the brain.
- Author
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Gaire S, An J, Yang H, Lee KA, Dumre M, Lee EJ, Park SM, and Joe EH
- Subjects
- Animals, Male, Brain Injuries pathology, Antigens, CD metabolism, Antigens, Differentiation, Myelomonocytic metabolism, Neurons metabolism, Neurons pathology, Neurons drug effects, Lectins, C-Type metabolism, Wound Healing, Mice, Adenosine Triphosphate metabolism, CD68 Molecule, Phagocytosis drug effects, Monocytes metabolism, Inflammation pathology, Brain pathology, Mice, Inbred C57BL, Lipopolysaccharides pharmacology
- Abstract
In this study, we examined how systemic inflammation affects repair of brain injury. To this end, we created a brain-injury model by stereotaxic injection of ATP, a damage-associated molecular pattern component, into the striatum of mice. Systemic inflammation was induced by intraperitoneal injection of lipopolysaccharide (LPS-ip). An analysis of magnetic resonance images showed that LPS-ip reduced the initial brain injury but slowed injury repair. An immunostaining analysis using the neuronal marker, NeuN, showed that LPS-ip delayed removal of dead/dying neurons, despite the fact that LPS-ip enhanced infiltration of monocytes, which serve to phagocytize dead cells/debris. Notably, infiltrating monocytes showed a widely scattered distribution. Bulk RNAseq analyses showed that LPS-ip decreased expression of genes associated with phagocytosis, with PCR and immunostaining of injured brains confirming reduced levels of Cd68 and Clec7a, markers of phagocytic activity, in monocytes. Collectively, these results suggest that systemic inflammation affects properties of blood monocytes as well as brain cells, resulting in delay in clearing damaged cells and activating repair processes., (© 2024. The Author(s).)
- Published
- 2024
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148. "DigitalMe" in smart cities.
- Author
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Park SM, Hong S, Joo K, Kim S, and Lepech MD
- Abstract
Competing Interests: One of the co-authors, K.A.J., has recently moved to LG CNS. K.A.J.’s current involvement with LG CNS is unrelated to the examples provided in this article.
- Published
- 2024
- Full Text
- View/download PDF
149. Comparison of biportal endoscopic and microscopic tubular paraspinal approach for foraminal and extraforaminal lumbar disc herniation.
- Author
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Kang MS, Hwang JY, Park SM, Yang JH, You KH, Hong SH, Cho SK, and Park HJ
- Subjects
- Humans, Male, Female, Middle Aged, Adult, Treatment Outcome, Decompression, Surgical methods, Radiculopathy surgery, Paraspinal Muscles surgery, Aged, Pain Measurement, Intervertebral Disc Displacement surgery, Lumbar Vertebrae surgery, Endoscopy methods, Diskectomy methods
- Abstract
Objective: Foraminal and extraforaminal lumbar disc herniation (FELDH) is an important pathological condition that can lead to lumbar radiculopathy. The paraspinal muscle-splitting approach introduced by Reulen and Wiltse is a reasonable surgical technique. Minimally invasive procedures using a tubular retractor system have also been introduced. However, surgical treatment is considered more challenging for FELDH than for central or subarticular lumbar disc herniations (LDHs). Some researchers have proposed uniportal extraforaminal endoscopic lumbar discectomy through a posterolateral approach as an alternative for FELDH, but heterogeneous clinical results have been reported. Recently, the biportal endoscopic (BE) paraspinal approach has been suggested as an alternative. The aim of this study was to compare the clinical outcomes of BE and microscopic tubular (MT) paraspinal approaches for decompressive foraminotomy and lumbar discectomy (paraLD) in patients with FELDH., Methods: Ninety-one consecutive patients with unilateral lumbar radiculopathy and FELDH underwent paraLD. Demographic and perioperative data were collected. Clinical outcomes were evaluated using the visual analog scale (VAS) for back and leg pain, the Oswestry Disability Index (ODI) for spinal disability, and the modified Macnab criteria for patient satisfaction. Postoperative complications and reoperation rates were also evaluated., Results: In total, 76 patients were included in the final analysis. Among them, 43 underwent BE paraLD (group A) and the remaining 33 underwent MT paraLD (group B). The demographic and preoperative data were not statistically different between the groups. All patients showed significant improvements in VAS back, VAS leg, and ODI scores compared with baseline values (p < 0.05). The improvement in VAS back scores was significantly better in group A than in group B on postoperative day 2 (p < 0.001). However, all clinical parameters were comparable between the two groups after postoperative year 1 (p > 0.05). According to the modified Macnab criteria, 86.1% and 72.7% of the patients had excellent or good outcomes in groups A and B, respectively. No intergroup differences were observed (p = 0.367). In addition, there were no differences in the total operation time or amount of surgical drainage. Postoperative complications were not significantly different between the two groups (p = 0.301); however, reoperation rates were significantly higher in group B (p = 0.035)., Conclusions: BE paraLD is an effective treatment for FELDH and is an alternative to MT paraLD. In particular, BE paraLD has advantages of early improvement in postoperative back pain and low reoperation rates.
- Published
- 2024
- Full Text
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150. Influence of Gelatin on Adhesion, Proliferation, and Adipogenic Differentiation of Adipose Tissue-Derived Stem Cells Cultured on Soy Protein-Agarose Scaffolds.
- Author
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Hong SJ, Kim DH, Ryoo JH, Park SM, Kwon HC, Keum DH, Shin DM, and Han SG
- Abstract
Scaffolds play a key role in cultured meat production by providing an optimal environment for efficient cell attachment, growth, and development. This study investigated the effects of gelatin coating on the adhesion, proliferation, and adipogenic differentiation of adipose tissue-derived stem cells (ADSCs) cultured on soy protein-agarose scaffolds. Gelatin-coated scaffolds were prepared using 0.5% and 1.0% ( w / v ) gelatin solutions. The microstructure, water absorption rate, mechanical strength, cytotoxicity, cell adhesion, proliferation, and differentiation capabilities of the scaffolds were analyzed. Field emission scanning electron microscopy revealed the porous microstructure of the scaffolds, which was suitable for cell growth. Gelatin-coated scaffolds exhibited a significantly higher water absorption rate than that of non-coated scaffolds, indicating increased hydrophilicity. In addition, gelatin coating increased the mechanical strength of the scaffolds. Gelatin coating did not show cytotoxicity but significantly enhanced cell adhesion and proliferation. The gene expression levels of peroxisome proliferator-activated receptor gamma, CCAT/enhancer-binding protein alpha, and fatty acid-binding protein 4 were upregulated, and lipid accumulation was increased by gelatin coating. These findings suggest that gelatin-coated scaffolds provide a supportive microenvironment for ADSC growth and differentiation, highlighting their potential as a strategy for the improvement of cultured meat production and adipose tissue engineering.
- Published
- 2024
- Full Text
- View/download PDF
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