3,090 results on '"Ji YJ"'
Search Results
2. The stepped spin-Peierls phase transition in the quasi-one-dimensional spin-1/2 quantum XY-model
- Author
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Ji, YJ, Qi, J., Li, JX, Gong, CD, Ji, YJ, Qi, J., Li, JX, and Gong, CD
- Abstract
Using an extension of the Jordan-Wigner transformation (JWT) in two dimensions, the effects of weak interchain coupling on the spin-Peierls (SP) system is studied. The magnetic interaction is considered to be a quantum XY-interaction, and the spin-lattice distortion is treated quasiclassically. On the analogy of the stepped Peierls transition theory, we propose a stepped SP transition theory. We find that, when any finite transverse coupling J perpendicular to is introduced between nearest chains, the usual SP transition will be modified, and the dimerization and the opening of the gap will no longer occur simultaneously. This leads to the appearance of a gapless SP phase over a certain temperature region.
- Published
- 1997
3. Reduced cell-mediated immune response in hyperglycemic NOD mice following influenza vaccination.
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Bang JY, Kim YJ, Seo YJ, and Hong SH
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- Animals, Mice, Female, Immunoglobulin G blood, Immunoglobulin G immunology, Antibodies, Viral blood, Antibodies, Viral immunology, Interferon-gamma immunology, Vaccination, Immunoglobulin M blood, Immunoglobulin M immunology, Orthomyxoviridae Infections immunology, Spleen immunology, T-Lymphocytes immunology, Mice, Inbred NOD, Influenza Vaccines immunology, Influenza Vaccines administration & dosage, Hyperglycemia immunology, Immunity, Cellular, Diabetes Mellitus, Type 1 immunology
- Abstract
Due to the higher risk of medical complications posed by influenza infection, patients with type 1 diabetes (T1D) are strongly recommended to receive the influenza vaccine. However, it remains unclear if hyperglycemia in patients with T1D affects vaccine-induced immune responses. In this study, we investigated the humoral and cellular immune responses of prediabetic and diabetic, nonobese diabetic (NOD) mice following influenza vaccination to determine the effects of hyperglycemia on influenza vaccine-induced responses. In diabetic NOD mice, vaccine-specific IgG and IgM levels, as well as IgG-producing cells, were comparable to those in prediabetic NOD mice. However, the diabetic NOD mice exhibited reduced percentages of memory T cells and activated T cells in the spleen, along with reduced number of vaccine-specific interferon (IFN)-γ-secreting cells. Thus, these findings suggest that in patients with T1D, hyperglycemia could lead to impaired cell-mediated immune responses following influenza vaccination., 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.)
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- 2024
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4. Heightened incidence of adverse events associated with a live attenuated varicella vaccine strain that lacks critical genetic polymorphisms in open reading frame 62.
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Kim YJ, Oh D, Kim J, Son J, Moon JY, Kim YK, Ahn B, Kang KR, Park D, and Kang HM
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- Humans, Male, Child, Preschool, Female, Infant, Incidence, Child, DNA, Viral genetics, Chickenpox Vaccine adverse effects, Chickenpox Vaccine genetics, Vaccines, Attenuated adverse effects, Vaccines, Attenuated genetics, Herpesvirus 3, Human genetics, Herpesvirus 3, Human immunology, Open Reading Frames, Polymorphism, Single Nucleotide, Herpes Zoster epidemiology, Herpes Zoster virology
- Abstract
Objectives: This study aimed to identify the specific vaccine strain associated with herpes zoster (HZ) in children following a series of diagnosed cases and to explore whether differences in single nucleotide polymorphisms (SNPs) among various vaccine strains are linked to an increased incidence of herpes zoster after vaccination., Methods: From February 2021 to March 2024, children <12 years old suspected of vaccine-related varicella-like rash or HZ were included. Varicella zoster virus DNA isolated from the patients were sequenced to differentiate vaccine type versus wild-type. 3D protein structures of pORF62 were simulated using open reading frame 62 sequences extracted from whole genome sequencing of vOka, MAV/06, Oka/SK vaccines, and pOka reference., Results: A total of 27 children with a median age of 2.1 (interquartile range, 1.5-3.4) years old presented with vaccine-related varicella-like rash (n = 4/27, 14.8%) or HZ (n = 23/27, 85.2%). One patient with varicella-like rash and 34.8% (n = 8/23) with HZ had disseminated skin involvement. All were immunized with the Oka/SK strain varicella vaccine. Genotyping showed 88.2% (n = 15/17) had SNPs specific to the Oka/SK strain, and two had SNPs considered pOka type contained within the Oka/SK vaccine. Despite accumulations of SNPs in ORF 62 of Oka/SK, the translated amino acid sequence and 3D protein structure were identical to wild-type pOka's pORF62. In vOKA and MAV/06, changes in amino acids occurred at two positions, S628G and R958G, within pORF62. The predicted 3D protein structure of vOka and MAV/06's pORF62 showed that the α helical structure within region I undergoes conformational change, potentially increasing difficulties in interactions with infection-related proteins and thereby decreasing virulence. pORF62 in pOka and Oka/SK exhibited more stable structure complex of the α helical structure., Discussion: Lack of structural alternations in region I of pORF62 due to the absence of critical genetic polymorphisms in open reading frame 62 could be associated with the heightened incidence of adverse events., (Copyright © 2024 European Society of Clinical Microbiology and Infectious Diseases. Published by Elsevier Ltd. All rights reserved.)
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- 2024
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5. Racial/ethnic disparities in sleep health among adolescents in South Korea: The role of substance use behaviours.
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Jeon B, Chung SJ, and Lee YJ
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- Adolescent, Female, Humans, Male, Adolescent Behavior psychology, Adolescent Behavior ethnology, Cross-Sectional Studies, Ethnicity psychology, Health Status Disparities, Republic of Korea ethnology, Surveys and Questionnaires, East Asian People, Substance-Related Disorders epidemiology, Substance-Related Disorders ethnology
- Abstract
Aim: To examine the relationship between racial/ethnic disparities and substance use behaviours (alcohol and tobacco use) and their impact on the sleep health of South Korean adolescents., Design: Secondary analysis of cross-sectional study data from the 2021 Korea Youth Risk Behaviour Web-based Survey dataset., Methods: Given that Korean society has historically linked its racial/ethnic identity to a shared bloodline, we categorized 2644 adolescents from the Korea Youth Risk Behaviour Web-based Survey based on their racial/ethnic status, determined by their parents' birthplaces. Using multiple linear regression, we investigated whether the impact of racial/ethnic disparities on sleep health (sleep duration, debt, and timing) varies depending on substance use behaviours (alcohol and tobacco use) after controlling for age, sex, household economic status, depressed mood, suicidal ideation, perceived excessive stress, and anxiety level., Results: Despite no statistical differences in sleep health and the prevalence of substance use between racial/ethnic groups, racial/ethnic minority adolescents experienced greater sleep debt than racial/ethnic majority adolescents when consuming alcohol. Moreover, racial/ethnic minority adolescents were more likely to report psychosocial distress and had lower parental education level., Conclusion: Racial/ethnic minority adolescents were more vulnerable to the detrimental effects of alcohol use on sleep health compared to racial/ethnic majority adolescents. This heightened vulnerability may be attributed to the more pronounced psychosocial challenges and the lower socioeconomic status of parents in the racial/ethnic minority group., Impact: Racial/ethnic disparities are concerning in South Korea, particularly since the negative effects of substance use on sleep health are intensified among racial/ethnic minority adolescents. Nurses and other healthcare providers should recognize the importance of addressing the social disadvantages linked to racial/ethnic disparities. Beyond just advocating for the cessation of substance use, it is crucial to address these underlying issues to reduce sleep disparities among South Korean adolescents., Patient or Public Contribution: No patient or public contribution., (© 2024 John Wiley & Sons Ltd.)
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- 2024
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6. Substance use as subtext to health narratives: Identifying opportunities for improving care from community member perspectives.
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Hamm M, Wilson JD, Lee YJ, Norman N, Winstanley EL, and McTigue KM
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- Humans, Female, Male, Middle Aged, Adult, Analgesics, Opioid therapeutic use, Chronic Pain drug therapy, Pain Management, Qualitative Research, Narration, Substance-Related Disorders therapy, Caregivers psychology
- Abstract
Objective: To analyze patient and caregiver narratives addressing experiences related to substance use and substance use disorder (SUD)., Methods: Thirty audio-narratives from the MyPaTH Story Booth archive addressed substance use between 5/20/2016 and 2/24/21. Two coders established an average Cohen's kappa statistics of 0.81 over 16 stories. The primary coder coded and summarized additional narratives and conducted content and thematic analyses. The final analytic sample addressed perspectives of individuals with SUD, caregivers for individuals with SUD and individuals who have used opioids to manage pain., Results: Storytellers' average age was 51, 55 % were female and 85 % were white. Participants with SUD and caregivers described frustration with the current treatment system, reported limited treatment of SUD in medical settings, and noted relying on community-based groups for ongoing care. Individuals with chronic pain felt stigmatized and resented perceived restrictions on pain treatment due to the opioid epidemic., Conclusions: Unstructured narratives provide insights into the lived experiences of people impacted by SUD. Participants reported struggling with the effects of SUD and failing to find adequate treatment from the medical system. Stories highlight SUD-related stigma., Practice Implications: Understanding patient and caregiver perspectives related to SUD can be a critical step towards developing effective interventions., 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 The Authors. Published by Elsevier B.V. All rights reserved.)
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- 2024
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7. Comparison of proximal and distal laparoscopic ureteroureterostomy for complete duplex kidneys in children.
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Zhu XJ, Huang LQ, Liu S, Dong J, Zhu HB, Chen CJ, Wang LX, Guo YF, Deng YJ, and Lu RG
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- Humans, Female, Male, Retrospective Studies, Child, Child, Preschool, Adolescent, Ureter surgery, Ureter diagnostic imaging, Infant, Laparoscopy methods, Ureterostomy methods, Kidney abnormalities, Kidney diagnostic imaging, Kidney surgery
- Abstract
Objective: To compare efficacy of proximal and distal laparoscopic ureteroureterostomy (UU) for complete duplex kidneys in children., Methods: Patients who underwent laparoscopic UU for complete duplex kidneys between December 2016 and July 2022 were reviewed retrospectively. 71 patients who had normal lower pole moiety without vesicoureteral reflux (VUR) were recruited. All of them underwent ultrasound, voiding cystourethrography (VCUG), renal scintigraphy, and magnetic resonance urography preoperatively. Proximal laparoscopic UU was performed in 35 patients and distal laparoscopic UU in 36 patients. Double J stents were placed in normal lower pole moieties. Clinical data, including general information, diagnosis, surgical management, imaging characteristics, clinical symptoms and postoperative complications (classified according to the modified Clavien-Dindo classification), and length of stay were recorded. Measurement date comparisons between groups were performed by t test, counting date were analyzed by chi-square test., Results: The study consisted of 71 patients (56 females and 15 males) with complete duplex kidneys (41 in left kidney and 30 in right kidney). The patients' mean age was 34 m (range 3-161 m) and follow-up ranged from 25 to 81 m. No significant difference was found in age and follow-up time between the two groups. Laparoscopic UU was performed in all patients successfully. The operation time of the two groups was 108.42 ± 26.95 min for distal UU vs 121.46 ± 35.15 min for proximal UU(p = 0.14). No significant difference in postoperative complications was seen between the two groups (22.2% vs 31.4%, p = 0.345). However, in terms of the grading of postoperative complications, the proximal UU group had a higher grade (3 of them had a grade of IV) and more serious complications., Conclusions: There was no significant difference in the overall incidence of complications between distal and proximal UU. Compared with proximal laparoscopic UU, distal laparoscopic UU is easier to perform with less injury to the peripheral tissues. Postoperative complications of proximal UU are more serious and more difficult to manage. We recommend complete duplex kidney ureteral reconstruction with distal UU., (© 2024. The Author(s).)
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- 2024
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8. Impacts of early life adversity on the neurocircuitry of emotional memory in children.
- Author
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Oliver KI, Stenson A, van Rooij SJH, Johnson CB 2nd, Ely TD, Powers A, Minton ST, Wiltshire C, Kim YJ, Hinrichs R, Jovanovic T, and Stevens JS
- Abstract
Similar to adults with posttraumatic stress disorder, children with early life adversity show bias in memory for negative emotional stimuli. However, it is not well understood how childhood adversity impacts mechanisms underlying emotional memory. N = 56 children (8-14 years, 48% female) reported on adverse experiences including potentially traumatic events and underwent fMRI while attending to emotionally pleasant, neutral, or negative images. Post-scan, participants completed a cued recall test to assess memory for these images. Emotional difference-in-memory (DM) scores were computed by subtracting negative or positive from neutral recall performance. All children showed enhancing effects of emotion on recall, with no effect of trauma load. However, children with less trauma showed a larger emotional DM for both positive and negative stimuli when amygdala or anterior hippocampal activity was higher. In contrast, highly trauma-exposed children demonstrated a lower emotional DM with greater amygdala or hippocampal activity. This suggested that alternative neural mechanisms might support emotional enhancement of encoding in children with greater trauma load. Whole-brain analyses revealed that right fusiform activity during encoding positively correlated with both trauma load and successful later recall of positive images. Therefore, highly trauma-exposed children may use alternative, potentially adaptive neural pathways via the ventral visual stream to encode positive emotional events.
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- 2024
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9. SREBP1 induction mediates long-term statins therapy related myocardial lipid peroxidation and lipid deposition in TIIDM mice.
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Huang TS, Wu T, Fu XL, Ren HL, He XD, Zheng DH, Tan J, Shen CH, Xiong SJ, Qian J, Zou Y, Wan JH, Ji YJ, Liu MY, Wu YD, Li XH, Li H, Zheng K, Yang XF, Wang H, Ren M, and Cai WB
- Abstract
Statins therapy is efficacious in diminishing the risk of major cardiovascular events in diabetic patients. However, our research has uncovered a correlation between the prolonged administration of statins and an elevated risk of myocardial dysfunction in patients with type II diabetes mellitus (TIIDM). Here, we report the induction of sterol regulatory element-binding protein 1 (SREBP1) activation, associated lipid peroxidation, and the consequent diabetic myocardial dysfunction after statin treatment and explored the underlying mechanisms. In db/db mice, we observed that 40 weeks atorvastatin (5 and 10 mg/kg) and rosuvastatin (20 mg/kg) administration exacerbated diabetic myocardial dysfunction by echocardiography and cardiomyocyte contractility assay, increased myocardial inflammation and fibrosis as shown by CD68, IL-1β, Masson's staining and Collagen1A1 immunohistochemistry (IHC) staining, increased respiratory exchange ratio (RER) by metabolic cage system assessment, exacerbated mitochondrial structural pathological changes by transmission electron microscopy (TEM) examination, increased deposition of lipid and glycogen by TEM, Oil-red and periodic acid-schiff stain (PAS) staining, which were corresponded with augmented levels of myocardial SREBP1 protein and lipid peroxidation marked by 4-hydroxynonenal (4-HNE) staining. Comparable myocardial fibrosis was also observed in KK-ay and low-dose streptozotocin (STZ)-induced TIIDM mice. Elevated SREBP1 levels were observed in the heart tissues from diabetic patients, which was positively correlated with their myocardial dysfunction. To elucidate the role of statin induced SREBP1 in lipid peroxidation and lipid deposition and related mechanism, we cultured neonatal mouse primary cardiomyocytes (NMPCs) and treated them with atorvastatin (10 μM, 24 h), tracing with [U-
13 C]-glucose and evaluating for SREBP1 expression and localization. We found that statin treatment elevated de novo lipogenesis (DNL) and the levels of SREBP1 cleavage-activating protein (SCAP), reduced the interaction of SCAP with insulin-induced gene 1 (Insig1), and enhance SCAP/SREBP1 translocation to the Golgi, which facilitate SREBP1 cleavage leading to its nuclear trans-localization and activation in NMPCs. Ultimately, SREBP1 knockdown or l-carnitine mitigated long-term statins therapy induced lipid peroxidation and myocardial fibrosis in low-dose STZ treated SREBP1+/- mice and l-carnitine treated db/db mice. In conclusion, we demonstrated that statin therapy may augment DNL by activating SREBP1, resulting in myocardial lipid peroxidation and lipid deposition., 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 The Authors. Published by Elsevier B.V. All rights reserved.)- Published
- 2024
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10. Rural Alabamians' Unmet Medical Needs: Rethinking the Roles of Online Health Information-Seeking Behaviors.
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Kim D, Yoon YJ, Cosenzo LG, and Lee HY
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Introduction: Unmet medical needs in rural areas are of grave concern in the U.S. With the advent of digital technologies, the Internet has become a critical means for accessing essential health information. However, racial/ethnic minority rural communities experiencing scarcity in healthcare services and access to the Internet are underrepresented in digital health studies. This study examined the association between online health information-seeking behaviors and unmet medical needs in a sample of African/Black American adults living in a rural region of the U.S., Methods: Among a sample of 191 adults, we used descriptive analyses to document the level of unmet medical needs and online health information-seeking behaviors of this population and conducted logistic regressions to test the association between online health information-seeking behaviors and unmet medical needs., Results: Most participants were older than 50 years old (60.2%), female (68.1%), unemployed (57.6%), and had an annual income of less than $25,000 (60.2%). About 20% of participants experienced unmet medical needs. The mean score of online health information-seeking behaviors was 2.37 (range 0-12). Increasing online health information-seeking behaviors was associated with 5.95 increased odds of experiencing unmet medical needs (OR = 5.95, 95% CI 1.27-27.77)., Discussion: The finding highlights that it is necessary to develop targeted programs aimed at populations with high unmet medical needs, focusing on providing accessible health information and resources. Further research is warranted to investigate the motivations to engage in online health information-seeking behaviors to inform structural and workforce interventions to address unmet medical needs in this under-resourced region., (© 2024. W. Montague Cobb-NMA Health Institute.)
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- 2024
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11. PARP1-TRIM44-MRN loop dictates the response to PARP inhibitors.
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Kim Y, Min S, Kim S, Lee SY, Park YJ, Heo Y, Park SS, Park TJ, Lee JH, Kang HC, Ji JH, and Cho H
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- Humans, Tripartite Motif Proteins metabolism, Tripartite Motif Proteins genetics, Cell Line, Tumor, Ubiquitination, Ataxia Telangiectasia Mutated Proteins metabolism, Recombinational DNA Repair, Intracellular Signaling Peptides and Proteins metabolism, Intracellular Signaling Peptides and Proteins genetics, MRE11 Homologue Protein metabolism, MRE11 Homologue Protein genetics, Tumor Suppressor p53-Binding Protein 1 metabolism, Tumor Suppressor p53-Binding Protein 1 genetics, HEK293 Cells, Protein Binding, Chromatin metabolism, DNA Breaks, Double-Stranded, Poly(ADP-ribose) Polymerase Inhibitors pharmacology, Poly (ADP-Ribose) Polymerase-1 metabolism, Poly (ADP-Ribose) Polymerase-1 genetics, Phthalazines pharmacology, Piperazines pharmacology
- Abstract
PARP inhibitors (PARPi) show selective efficacy in tumors with homologous recombination repair (HRR)-defects but the activation mechanism of HRR pathway in PARPi-treated cells remains enigmatic. To unveil it, we searched for the mediator bridging PARP1 to ATM pathways by screening 211 human ubiquitin-related proteins. We discovered TRIM44 as a crucial mediator that recruits the MRN complex to damaged chromatin, independent of PARP1 activity. TRIM44 binds PARP1 and regulates the ubiquitination-PARylation balance of PARP1, which facilitates timely recruitment of the MRN complex for DSB repair. Upon exposure to PARPi, TRIM44 shifts its binding from PARP1 to the MRN complex via its ZnF UBP domain. Knockdown of TRIM44 in cells significantly enhances the sensitivity to olaparib and overcomes the resistance to olaparib induced by 53BP1 deficiency. These observations emphasize the central role of TRIM44 in tethering PARP1 to the ATM-mediated repair pathway. Suppression of TRIM44 may enhance PARPi effectiveness and broaden their use even to HR-proficient tumors., (© The Author(s) 2024. Published by Oxford University Press on behalf of Nucleic Acids Research.)
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- 2024
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12. Early administration of Wumei Wan inhibit myeloid-derived suppressor cells via PI3K/Akt pathway and amino acids metabolism to prevent colitis-associated colorectal cancer.
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Lu ZH, Ding Y, Wang YJ, Chen C, Yao XR, Yuan XM, Bu F, Bao H, Dong YW, Zhou Q, Li L, Chen T, Li Y, Zhou JY, Wang Q, Shi GP, Jiang F, and Chen YG
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- Animals, Mice, Male, Phosphatidylinositol 3-Kinases metabolism, Cytokines metabolism, Colorectal Neoplasms drug therapy, Colitis drug therapy, Colitis complications, Colitis metabolism, Mice, Inbred BALB C, Disease Models, Animal, Colon drug effects, Colon metabolism, Colon pathology, Mice, Inbred C57BL, Proto-Oncogene Proteins c-akt metabolism, Drugs, Chinese Herbal pharmacology, Signal Transduction drug effects, Colitis-Associated Neoplasms drug therapy, Colitis-Associated Neoplasms prevention & control, Myeloid-Derived Suppressor Cells drug effects, Myeloid-Derived Suppressor Cells metabolism, Dextran Sulfate
- Abstract
Ethnopharmacological Relevance: Wumei Wan (WMW), a traditional Chinese medicine prescription, has been proved to be effective in treating Colitis-associated colorectal cancer (CAC), but it has not been proven to be effective in different stages of CAC., Aim of the Study: The purpose of our study is to investigate the therapeutic effect and mechanism of WMW on the progression of CAC., Materials and Methods: Azioximethane (AOM) and dextran sulfate sodium (DSS) were used to treat mice for the purpose of establishing CAC models. WMW was administered in different stages of CAC. The presentative chemical components in WMW were confirmed by LC-MS/MS under the optimized conditions. The detection of inflammatory cytokines in the serum and colon of mice were estimated by qRT-PCR and ELISA. The changes of T cells and myeloid-derived suppressor cells (MDSCs) in each group were detected by flow cytometry. The metabolic components in serum of mice were detected by UPLC-MS/MS. Expression of genes and proteins were detected by eukaryotic transcriptomics and Western blot to explore the key pathway of WMW in preventing CAC., Results: WMW had significant effect on inhibiting inflammatory responses and tumors during the early development stage of CAC when compared to other times. WMW increased the length of mice's colons, reduced the level of IL-1β, IL-6, TNF-α in colon tissues, and effectively alleviated colonic inflammation, and improved the pathological damage of colon tissues. WMW could significantly reduce the infiltration of MDSCs in the spleen, increase CD4
+ T cells and CD8+ T cells in the spleen of CAC mice, and effectively reform the immune microenvironment in CAC mice. Transcriptomics analysis revealed that 2204 genes had different patterns of overlap in the colon tissues of mice between control group, AOM + DSS group, and early administration of WMW group. And KEGG enrichment analysis showed that PI3K/Akt signaling pathway, ECM-receptor interaction, IL-17 signaling pathway, MAPK signaling pathway, pancreatic secretion, thermogenesis, and Rap1 signaling pathway were all involved. The serum metabolomics results of WMW showed that the metabolic compositions of the control group, AOM + DSS group and the early stage of WMW were different, and 42 differential metabolites with the opposite trends of changes were screened. The metabolic pathways mainly included pyrimidine metabolism, glycine, serine and threonine metabolism, tryptophan metabolism, and purine metabolism. And amino acids and related metabolites may play an important role in WMW prevention of CAC., Conclusion: WMW can effectively prevent the occurrence and development of CAC, especially in the initial stage. WMW can reduce the immune infiltration of MDSCs in the early stage. Early intervention of WMW can improve the metabolic disorder caused by AOM + DSS, especially correct the amino acid metabolism. PI3K/Akt signaling pathway was inhabited in early administration of WMW, which can regulate the amplification and function of MDSCs., Competing Interests: Declaration of competing interest All authors disclosed no conflicts of interest., (Copyright © 2024 The Author(s). Published by Elsevier B.V. All rights reserved.)- Published
- 2024
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13. Identification of diagnostic challenges in RP1 Alu insertion and strategies for overcoming them.
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Jang MA, Lee JK, Park JH, Hwang S, Kim YG, Kim JW, Hong YJ, Kim SJ, and Jang JH
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- Humans, Male, Female, Mutagenesis, Insertional, Retinal Diseases genetics, Retinal Diseases diagnosis, Homozygote, Exons genetics, Whole Genome Sequencing methods, Microtubule-Associated Proteins, Alu Elements genetics, Alleles
- Abstract
Recently, a founder Alu insertion in exon 4 of RP1 was detected in Japanese and Korean patients with inherited retinal diseases (IRDs). However, carrier frequency and diagnostic challenges for detecting AluY insertion are not established. We aim to investigate the frequency of AluY in individuals with or without IRDs and to overcome common diagnostic pitfalls associated with AluY insertion. A total of 1,072 subjects comprising 411 patients with IRD (IRD group) and 661 patients with other suspected Mendelian genetic disease (non-IRD group) was screened for AluY insertion. Targeted panel sequencing and whole-genome sequencing were used for detection of AluY insertion, and an optimized allele-specific PCR (AS-PCR) was used for validation. The AluY insertion was detected in 1.5% in IRD group (6/411). The AluY insertion was not observed in non-IRD group (0/661). All patients with AluY were confirmed to have RP1 pathogenic variants on the paired allele. We identified AluY allele dropout leading to false homozygosity for c.4196del pathogenic variant in Sanger sequencing. The allelic relationship between variants of RP1 was accurately determined by AluY AS-PCR. Delineating diagnostic challenges of AluY insertion and strategies to avoid potential pitfalls could aid clinicians in an accurate molecular diagnosis for patients with IRD., (© 2024. The Author(s).)
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- 2024
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14. Attenuated kidney oxidative metabolism in young adults with type 1 diabetes.
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Choi YJ, Richard G, Zhang G, Hodgin JB, Demeke DS, Yang Y, Schaub JA, Tamayo IM, Gurung BK, Naik AS, Nair V, Birznieks C, MacDonald A, Narongkiatikhun P, Gross S, Driscoll L, Flynn M, Tommerdahl K, Nadeau KJ, Shah VN, Vigers T, Snell-Bergeon JK, Kendrick J, van Raalte DH, Li LP, Prasad P, Ladd P, Chin BB, Cherney DZ, McCown PJ, Alakwaa F, Otto EA, Brosius FC, Saulnier PJ, Puelles VG, Goodrich JA, Street K, Venkatachalam MA, Ruiz A, de Boer IH, Nelson RG, Pyle L, Blondin DP, Sharma K, Kretzler M, and Bjornstad P
- Abstract
Background: In type 1 diabetes (T1D), impaired insulin sensitivity may contribute to the development of diabetic kidney disease (DKD) through alterations in kidney oxidative metabolism., Methods: Young adults with T1D (n = 30) and healthy controls (HC, n = 20) underwent hyperinsulinemic-euglycemic clamp studies, MRI, 11C-acetate PET, kidney biopsies, single-cell RNA sequencing, and spatial metabolomics to assess this relationship., Results: Participants with T1D had significantly higher glomerular basement membrane thickness compared to HC. T1D participants exhibited lower insulin sensitivity and cortical oxidative metabolism, correlating with higher insulin sensitivity. Proximal tubular transcripts of TCA cycle and oxidative phosphorylation enzymes were lower in T1D. Spatial metabolomics showed reductions in tubular TCA cycle intermediates, indicating mitochondrial dysfunction. The Slingshot algorithm identified a lineage of proximal tubular cells progressing from stable to adaptive/maladaptive subtypes, using pseudotime trajectory analysis, which computationally orders cells along a continuum of states. This analysis revealed distinct distribution patterns between T1D and HC, with attenuated oxidative metabolism in T1D attributed to a greater proportion of adaptive/maladaptive subtypes with low expression of TCA cycle and oxidative phosphorylation transcripts. Pseudotime progression associated with higher HbA1c, BMI, GBM, and lower insulin sensitivity and cortical oxidative metabolism., Conclusion: These early structural and metabolic changes in T1D kidneys may precede clinical DKD., Clinicaltrials: gov NCT04074668.
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- 2024
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15. Proteomic Analysis Uncovers Multi-Protein Signatures Associated with Early Diabetic Kidney Disease in Youth with Type 2 Diabetes Mellitus.
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Pyle L, Choi YJ, Narongkiatikhun P, Sharma K, Waikar S, Layton A, Tommerdahl KL, de Boer I, Vigers T, Nelson RG, Lynch J, Brosius F 3rd, Saulnier PJ, Goodrich JA, Tryggestad JB, Isganaitis E, Bacha F, Nadeau KJ, van Raalte D, Kretzler M, Heerspink H, and Bjornstad P
- Abstract
Background: The onset of diabetic kidney disease (DKD) in youth with type 2 diabetes mellitus often occurs early, leading to complications in young adulthood. Risk biomarkers associated with the early onset of DKD are urgently needed in youth with type 2 diabetes., Methods: We conducted an in-depth analysis of 6596 proteins (SomaScan 7K) in 374 baseline plasma samples from the Treatment Options for Type 2 Diabetes in Adolescents and Youth (TODAY) study to identify multi-protein signatures associated with the onset of albuminuria (urine albumin-to-creatinine ratio [UACR] ≥30 mg/g), a rapid decline in estimated glomerular filtration rate (eGFR) [annual eGFR decline >3 mL/min/1.73m2 and/or ≥3.3% at two consecutive visits], and hyperfiltration (≥135 mL/min/1.73m2 at two consecutive visits). Elastic net Cox regression with 10-fold cross-validation was applied to the top 100 proteins (ranked by p-value) to identify multi-protein signatures of time to development of DKD outcomes., Results: Participants in the TODAY study (14±2 years old, 63% female, 7±6 months diabetes duration) experienced high rates of early DKD: 43% developed albuminuria, 48% hyperfiltration, and 16% rapid eGFR decline. Increased levels of seven and three proteins were predictive of shorter time to develop albuminuria and rapid eGFR decline, respectively; 118 proteins predicted time to development of hyperfiltration. Elastic net Cox proportional hazards model identified multi-protein signatures of time to incident early DKD with concordance for models with clinical covariates and selected proteins between 0.81 and 0.96, while the concordance for models with clinical covariates only was between 0.56 and 0.63., Conclusions: Our research sheds new light on proteomic changes early in the course of youth-onset type 2 diabetes that associate with DKD. Proteomic analyses identified promising risk factors that predict DKD risk in youth with type 2 diabetes and could deepen our understanding of DKD mechanisms and potential interventions., (Copyright © 2024 by the American Society of Nephrology.)
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- 2024
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16. Risk and clinical characteristics of spinal cord compression across different mucopolysaccharidosis types: A retrospective cohort study.
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Kim I, Sung J, Ahn YJ, Im M, Kim MJ, Park SJ, and Cho SY
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- Humans, Retrospective Studies, Male, Female, Adolescent, Child, Adult, Young Adult, Child, Preschool, Risk Factors, Enzyme Replacement Therapy, Infant, Spinal Cord Compression etiology, Mucopolysaccharidoses complications
- Abstract
In patients with mucopolysaccharidosis (MPS), the accumulation of glycosaminoglycans leads to various complications, including spinal cord compression (SCC). Although SCC is a well-known complication in MPS, data comparing its clinical features across different MPS types remain limited. This study aimed to investigate the timing, location, and underlying causes of SCC in MPS, as well as to compare the risk and clinical characteristics by MPS type. We conducted a retrospective cohort study, reviewing the medical records of 183 patients with all types of MPS who were followed at Samsung Medical Center from January 1995 to March 2024. The distribution of patients diagnosed with SCC by MPS type was 33.3% for type I, 10.5% for type II, 55.0% for type IV, and 100% for type VI. The median age at SCC diagnosis was 16.3 years. Compared to type II, the risk of SCC was higher for type I (2.4 times, 95% confidence interval [CI]: 0.9-6.2), type IV (3.5 times; 95% CI: 1.5-8.1), and type VI (4.5 times, 95% CI: 1.2-16.4). Enzyme replacement therapy did not reduce the risk of SCC (P = .70). Moreover, SCC most frequently occurred at the C0 to C4 and T11 to L2 spinal levels. In the cervical spine, ligament thickening, and skeletal deformities were the predominant causes, whereas in the thoracolumbar spine, kyphoscoliosis and intervertebral disc issues were the main contributors. Although there was no significant difference in the location of SCC (P = .99), the underlying causes varied significantly by MPS type (P < .001). SCC is a common complication in MPS, but its risk and pathophysiology vary by MPS type. Therefore, an individualized approach is needed for early detection and appropriate intervention., Competing Interests: The authors have no funding and conflicts of interest to disclose., (Copyright © 2024 the Author(s). Published by Wolters Kluwer Health, Inc.)
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- 2024
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17. Phase 2 trial of avelumab in combination with gemcitabine in advanced leiomyosarcoma as a second-line treatment (EAGLES, Korean Cancer Study Group UN18-09).
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Kim M, Kim YJ, Suh KJ, Kim SH, Kim JE, Jeong J, Hong JY, Lee J, Lee SJ, Oh SY, Kim JH, Lee GW, Ahn MS, Choi W, Choi YJ, Lee T, Oum C, Kim J, Kim YS, and Ahn JH
- Abstract
Background: In this single-arm, multicenter, phase 2 trial, the authors evaluated the efficacy and safety of avelumab plus gemcitabine in patients with leiomyosarcoma (LMS) who failed on first-line chemotherapy., Methods: Patients with advanced LMS received avelumab 10 mg/kg on days 1 and 15 (for up to 24 months) plus gemcitabine 1000 mg/m
2 on days 1, 8, and 15 of a 28-day cycle until they developed disease progression or intolerable toxicity. The primary end point was the objective response rate (ORR)., Results: In total, 38 patients were enrolled. Of these, 35 patients were evaluable, and the ORR was 20% (95% confidence interval; [CI], 8%-37%). The disease control rate was 71%, and the median duration of response was 21.8 months (range, 7.6 to ≥43.3 months). The median progression free-survival was 5.6 months (95% CI, 4.5-6.8 months), and the median overall survival was 27.5 months (95% CI, 20.4-34.6 months). Grade 3-4 adverse events occurred in 70% of patients, of which neutropenia was the most common (54%). Immune-mediated adverse events occurred in five patients (14%; hypothyroidism, n = 3; hepatitis, n = 2). Patients who had a higher density of tumor-infiltrating lymphocytes (greater than the median) exhibited better ORR (35% vs. 8%; p = .104), progression-free survival (median, 7.3 vs. 3.3 months; p = .024), and overall survival (median, not reached vs. 21.5 months; p = .027)., Conclusions: The combination of avelumab and gemcitabine demonstrated promising efficacy and manageable safety in patients with advanced LMS who progressed on first-line therapy. Tumor-infiltrating lymphocyte density may be an important factor in predicting the response to combining immunotherapy with chemotherapy., (© 2024 The Author(s). Cancer published by Wiley Periodicals LLC on behalf of American Cancer Society.)- Published
- 2024
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18. Palladium-Catalyzed Cyclization and Direct Arylation of 1-[2-(2,2-Dibromoethenyl)phenyl]-1 H -pyrrole with Allenes.
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Kong YY, Feng W, Wu YJ, Liu X, Chen MY, Wang ZC, Wang S, Tan X, Zhou PX, and Liang YM
- Abstract
A novel and efficient palladium-catalyzed highly regioselective reaction of 1-[2-(2,2-dibromoethenyl)phenyl]-1 H -pyrrole with allenes was realized to synthesize pyrrolo[1,2- a ]quinolones. The tandem process involves intermolecular cyclization and intramolecular direct arylation, leading to the formation three new C-C bonds and two new rings. Notably, this transformation exhibits broad substrate scope and high functional group tolerance.
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- 2024
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19. Lactobacillus gasseri BNR17 and Limosilactobacillus fermentum ABF21069 Ameliorate High Sucrose-Induced Obesity and Fatty Liver via Exopolysaccharide Production and β-oxidation.
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Jo YM, Son YJ, Kim SA, Lee GM, Ahn CW, Park HO, and Yun JH
- Abstract
Obesity and metabolic dysfunction-associated fatty liver disease (MAFLD) are prevalent metabolic disorders with substantial global health implications that are often inadequately addressed by current treatments and may have side effects. Probiotics have emerged as promising therapeutic agents owing to their beneficial effects on gut health and metabolism. This study investigated the synergistic effects of a probiotic combination of BNR17 and ABF21069 on obesity and MAFLD in C57BL/6 mice fed a high-sucrose diet. The probiotic combination significantly reduced body weight and fat accumulation compared with the high-sucrose diet. It also alleviated elevated serum leptin levels induced by a high-sucrose diet. Histological analysis revealed a significant reduction in white adipose tissue and fatty liver in the mice treated with the probiotic combination. Furthermore, increased expression of genes related to β-oxidation, thermogenesis, and lipolysis suggested enhanced metabolic activity. The probiotic groups, particularly the BNR17 group, showed an increase in fecal exopolysaccharides, along with a tendency toward a lower expression of intestinal sugar transport genes, indicating reduced sugar absorption. Additionally, inflammatory markers in the liver tissue exhibited lower expression in the ABF21069 group than in the HSD group. Despite each strain in the combination group having distinct characteristics and functions, their combined effect demonstrated synergy in mitigating obesity and MAFLD, likely through the modulation of fecal exopolysaccharides content and improvement in lipid metabolism. These findings underscore the potential of probiotic supplementation as a promising assistant therapy for managing obesity and MAFLD and provide valuable insights into its therapeutic mechanisms in metabolic disorders., (© 2024. The Author(s), under exclusive licence to Microbiological Society of Korea.)
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- 2024
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20. Psychiatric disorders associated with fluoroquinolones: a pharmacovigilance analysis of the FDA adverse event reporting system database.
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Xie WL, Ge ML, Chen D, Chen GQ, Mei YX, and Lai YJ
- Abstract
Background: Fluoroquinolones are broad-spectrum antibiotics with significant antimicrobial activity. Despite their therapeutic benefits, they are associated with a range of adverse drug reactions (ADRs), particularly those affecting the central nervous system (CNS). This study aimed to analyze the psychiatric ADRs linked to fluoroquinolones using data from the FDA Adverse Event Reporting System (FAERS) database., Methods: A retrospective pharmacovigilance study was conducted using FAERS data from Q1 2004 to Q4 2023. The data processing phase involved the FDA-recommended deduplication method, and ADRs were classified according to Medical Dictionary for Regulatory Activities (MedDRA). Disproportionality analysis was performed using the reporting odds ratio (ROR), and statistical significance was assessed using the Chi-square test or Fisher's exact test., Results: The study identified 84,777 reports associated with fluoroquinolones, with 359,480 Preferred Terms-annotated entries, 27,816 of these reports were psychiatric ADRs. Mood disorders were the most frequently reported, including anxiety, depression, and delirium, with some reports escalating to suicidal ideation and behaviors. The Standardized MedDRA Query classification system was used to categorize these ADRs into Depression, Suicide/self-injury, Psychosis and psychotic disorders, and Non-infectious encephalopathy/delirium. Ciprofloxacin was most frequently linked to depression and suicidal ideation, while moxifloxacin showed a robust correlation with delirium. The risk of psychiatric ADRs varied by age group, with affective disorders more prevalent in adults under 65 and psychosis and delirium in those over 65., Conclusion: Fluoroquinolones are associated with a range of psychiatric ADRs, with notable differences between the drugs in the class. The study highlights the need for caution in prescribing fluoroquinolones, particularly for patients with pre-existing mental health conditions or those in higher risk age groups. The findings also underscore the importance of considering age-specific preventive strategies when administering these antibiotics., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Xie, Ge, Chen, Chen, Mei and Lai.)
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- 2024
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21. Three Days of Oral Azithromycin Versus Five Days of Oral Clarithromycin in the Treatment of Campylobacter Enterocolitis in Children: A Prospective Study.
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Kang HM, Cho YK, Kim YJ, Jeong DC, and Yoo IH
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Objective: This study aimed to compare the efficacy and tolerability of azithromycin and clarithromycin in pediatric Campylobacter enterocolitis., Methods: A prospective, randomized, controlled trial was conducted at a single center. Patients with confirmed Campylobacter enterocolitis were randomly assigned to receive either a 3-day course of azithromycin or a 5-day course of clarithromycin. Symptoms were monitored daily, and changes in laboratory markers (WBC counts, CRP levels, and stool calprotectin) were compared., Results: A total of 29 pediatric patients were included, with 14 patients in the azithromycin group and 15 patients in the clarithromycin group. The median age of patients in the azithromycin group was 10.0 years (interquartile range [IQR]: 5.0-13.0), and in the clarithromycin group, the median age was 9.0 years (IQR: 7.0-13.0) ( p = 0.793). The median time to clinical resolution was 3.0 days (IQR: 2.0-3.0) in the azithromycin group and 2.0 days (IQR: 2.0-3.0) in the clarithromycin group ( p = 0.132). There were no significant differences in the duration of individual symptoms, including fever, vomiting, and abdominal pain. The length of hospital stay was also similar, with a median stay of 4 days (IQR: 3.0-5.0) in both groups ( p = 0.394). Both antibiotics were well-tolerated, with no significant adverse events or treatment discontinuation reported., Conclusions: Clarithromycin was found to be as effective as azithromycin in treating pediatric Campylobacter enterocolitis, with similar clinical outcomes and improvements in laboratory markers.
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- 2024
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22. Magnetoelectric nanodiscs enable wireless transgene-free neuromodulation.
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Kim YJ, Kent N, Vargas Paniagua E, Driscoll N, Tabet A, Koehler F, Malkin E, Frey E, Manthey M, Sahasrabudhe A, Cannon TM, Nagao K, Mankus D, Bisher M, de Nola G, Lytton-Jean A, Signorelli L, Gregurec D, and Anikeeva P
- Abstract
Deep brain stimulation with implanted electrodes has transformed neuroscience studies and treatment of neurological and psychiatric conditions. Discovering less invasive alternatives to deep brain stimulation could expand its clinical and research applications. Nanomaterial-mediated transduction of magnetic fields into electric potentials has been explored as a means for remote neuromodulation. Here we synthesize magnetoelectric nanodiscs (MENDs) with a core-double-shell Fe
3 O4 -CoFe2 O4 -BaTiO3 architecture (250 nm diameter and 50 nm thickness) with efficient magnetoelectric coupling. We find robust responses to magnetic field stimulation in neurons decorated with MENDs at a density of 1 µg mm-2 despite individual-particle potentials below the neuronal excitation threshold. We propose a model for repetitive subthreshold depolarization that, combined with cable theory, supports our observations in vitro and informs magnetoelectric stimulation in vivo. Injected into the ventral tegmental area or the subthalamic nucleus of genetically intact mice at concentrations of 1 mg ml-1 , MENDs enable remote control of reward or motor behaviours, respectively. These findings set the stage for mechanistic optimization of magnetoelectric neuromodulation towards applications in neuroscience research., (© 2024. The Author(s).)- Published
- 2024
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23. A pyroxene-based quantum magnet with multiple magnetization plateaus.
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Jin L, Peng S, Rutherford AN, Xu X, Ni D, Yang C, Byeon YJ, Xie W, Zhou H, Dai X, and Cava RJ
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Pyroxenes (AMX
2 O6 ) consisting of infinite one-dimensional edge-sharing MO6 chains and bridging XO4 tetrahedra are fertile ground for finding quantum materials. Thus, here, we have studied calcium cobalt germanate (CaCoGe2 O6 ) and calcium cobalt silicate (CaCoSi2 O6 ) crystals in depth. Heat capacity data show that the spins in both compounds are dominantly Ising-like, even after being manipulated by high magnetic fields. On cooling below the Néel temperatures, a sharp field-induced transition in magnetization is observed for CaCoGe2 O6 , while multiple magnetization plateaus beneath the full saturation moment are spotted for CaCoSi2 O6 . Our analysis shows that these contrasting behaviors potentially arise from the different electron configurations of germanium and silicon, in which the 3d orbitals are filled in the former but empty in the latter, enabling electron hopping. Thus, silicate tetrahedra can aid the interchain superexchange pathway between cobalt(II) ion centers, while germanate ones tend to block it during magnetization.- Published
- 2024
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24. Association of Nutritional Intake with Physical Activity and Handgrip Strength in Individuals with Airflow Limitation.
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Heo IR, Kim TH, Jeong JH, Heo M, Ju SM, Yoo JW, Lee SJ, Cho YJ, Jeong YY, Lee JD, and Kim HC
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Background: We investigated whether nutritional intake is associated with physical activity (PA) and handgrip strength (HGS) in individuals with airflow limitation., Methods: This study analyzed data from the 2014 to 2016 Korean National Health and Nutrition Examination Survey. We assessed total protein intake (g/day), caloric intake (kcal/day), and other nutritional intakes using a 24-hour dietary recall questionnaire. HGS was measured three times for each hand using a digital grip strength dynamometer, and PA was assessed as health-enhancing PA. Airflow limitation was defined as a forced expiratory volume/forced vital capacity ratio of 0.7 in individuals over 40 years of age. Participants were categorized into groups based on their PA levels and HGS measurements: active aerobic PA vs. non-active aerobic PA, and normal HGS vs. low HGS., Results: Among the 622 individuals with airflow limitation, those involved in active aerobic PA and those with higher HGS had notably higher total food, calorie, water, protein, and lipid intake. The correlations between protein and caloric intake with HGS were strong (correlation coefficients = 0.344 and 0.346, respectively). The forest plots show that higher intakes of food, water, calories, protein, and lipids are positively associated with active aerobic PA, while higher intakes of these nutrients are inversely associated with low HGS. However, in the multivariate logistic regression analysis, no significant associations were observed between nutritional intake and active aerobic PA or HGS., Conclusion: Nutritional intake was not found to be an independent factor associated with PA and HGS. However, the observed correlations suggest potential indirect effects that warrant further investigation.
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- 2024
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25. Effects of 4G Long-Term Evolution Electromagnetic Fields on Thyroid Hormone Dysfunction and Behavioral Changes in Adolescent Male Mice.
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Kim HY, Son Y, Jeong YJ, Lee SH, Kim N, Ahn YH, Jeon SB, Choi HD, and Lee HJ
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- Animals, Male, Mice, Mice, Inbred C57BL, Thyroid Gland metabolism, Thyroid Gland radiation effects, Iodide Peroxidase metabolism, Iodide Peroxidase genetics, Pituitary Gland metabolism, Pituitary Gland radiation effects, Hypothalamus metabolism, Electromagnetic Fields adverse effects, Thyroid Hormones metabolism, Thyroid Hormones blood, Behavior, Animal radiation effects
- Abstract
Radiofrequency electromagnetic fields (RF-EMFs) can penetrate tissues and potentially influence endocrine and brain development. Despite increased mobile phone use among children and adolescents, the long-term effects of RF-EMF exposure on brain and endocrine development remain unclear. This study investigated the effects of long-term evolution band (LTE) EMF exposure on thyroid hormone levels, crucial for metabolism, growth, and development. Four-week-old male mice (C57BL/6) were exposed to LTE EMF (whole-body average specific absorption rate [SAR] 4 W/kg) or a positive control (lead; Pb, 300 ppm in drinking water) for 4 weeks. Subsequently, the mice underwent behavioral tests including open field, marble burying, and nest building. Blood pituitary and thyroid hormone levels, and thyroid hormone-regulating genes within the hypothalamus-pituitary-thyroid (HPT) axis were analyzed. LTE exposure increased T3 levels, while Pb exposure elevated T3 and T4 and decreased ACTH levels. The LTE EMF group showed no gene expression alterations in the thyroid and pituitary glands, but hypothalamic Dio2 and Dio3 expressions were significantly reduced compared to that in the sham-exposed group. Pb exposure altered the hypothalamic mRNA levels of Oatp1c1 and Trh , pituitary mRNA of Trhr , and Tpo and Tg expression in the thyroid. In conclusion, LTE EMF exposure altered hypothalamic Dio2 and Dio3 expression, potentially impacting the HPT axis function. Further research is needed to explore RF-EMF's impacts on the endocrine system.
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- 2024
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26. Genome-wide characterization of nitric oxide-induced NBS-LRR genes from Arabidopsis thaliana and their association in monocots and dicots.
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Das AK, Hussain A, Methela NJ, Lee DS, Lee GJ, Woo YJ, and Yun BW
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- Phylogeny, Genome, Plant, Gene Expression Regulation, Plant, Genes, Plant, Oryza genetics, Zea mays genetics, Solanum lycopersicum genetics, Plant Proteins genetics, Plant Proteins metabolism, Arabidopsis Proteins genetics, Arabidopsis Proteins metabolism, Genome-Wide Association Study, Arabidopsis genetics, Nitric Oxide metabolism
- Abstract
Background: Nitric oxide (NO) is pivotal in regulating the activity of NBS-LRR specific R genes, crucial components of the plant's immune system. It is noteworthy that previous research has not included a genome-wide analysis of NO-responsive NBS-LRR genes in plants., Results: The current study examined 29 NO-induced NBS-LRR genes from Arabidopsis thaliana, along with two monocots (rice and maize) and two dicots (soybean and tomato) using genome-wide analysis tools. These NBS-LRR genes were subjected to comprehensive characterization, including analysis of their physio-chemical properties, phylogenetic relationships, domain and motif identification, exon/intron structures, cis-elements, protein-protein interactions, prediction of S-Nitrosylation sites, and comparison of transcriptomic and qRT-PCR data. Results showed the diverse distribution of NBS-LRR genes across chromosomes, and variations in amino acid number, exons/introns, molecular weight, and theoretical isoelectric point, and they were found in various cellular locations like the plasma membrane, cytoplasm, and nucleus. These genes predominantly harbor the NB-ARC superfamily, LRR, LRR_8, and TIR domains, as also confirmed by motif analysis. Additionally, they feature species-specific PLN00113 superfamily and RX-CC_like domain in dicots and monocots, respectively, both responsive to defense against pathogen attacks. The NO-induced NBS-LRR genes of Arabidopsis reveal the presence of cis-elements responsive to phytohormones, light, stress, and growth, suggesting a wide range of responses mediated by NO. Protein-protein interactions, coupled with the prediction of S-Nitrosylation sites, offer valuable insights into the regulatory role of NO at the protein level within each respective species., Conclusion: These above findings aimed to provide a thorough understanding of the impact of NO on NBS-LRR genes and their relationships with key plant species., (© 2024. The Author(s).)
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- 2024
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27. Complications after Reverse Total Shoulder Arthroplasty in the Korean Population: A Single Center Study of 299 Cases.
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Cho CH, Kim DH, Kim YJ, and Kim SG
- Abstract
Background: Knowledge regarding differences in the order of frequency of complications after reverse total shoulder arthroplasty (RTSA) between Asian and Western populations is limited. We therefore asked for (1) What is the order of frequency of complications after primary RTSA in the Korean population? (2) What are the rates of complication, reoperation, and revision, and clinical outcomes after index surgery?, Methods: We retrospectively reviewed the 299 consecutive cases who underwent primary RTSA with more than 1 year of follow-up over a period of 12 years. The mean age of the patients was 73.4 years (range, 58-88 years) and the mean follow-up period was 3.8 years (range, 1-11.5 years). Evaluation of the clinical outcomes, complications, and reinterventions was performed at the final follow-up., Results: The mean VAS pain score, UCLA score, ASES score, and SSV improved from 6.7, 10.2, 30.7, and 27.7% before RTSA to 1.4, 26.4, 80.5, 77.2% after RTSA, respectively (P < .001). Overall, 45 complications (15.1%) were observed in 44 patients. The order of frequency of complications was as follows: 16 cases of scapular stress fracture (5.4%), 9 intraoperative or postoperative periprosthetic fracture (3.0%), 6 brachial plexus injury (2.0%), 4 instability (1.3%), 2 glenoid loosening (0.7%), 2 glenoid disassembly (0.7%), 2 periprosthetic joint infection (0.7%), 1 glenoid fixation failure (0.3%), 1 humeral stem fixation failure (0.3%), 1 hematoma (0.3%), and 1 complex regional pain syndrome (0.3%). Reintervention was performed in 15 cases (5.0%) including reoperation (8 cases; 2.7%) and revision surgery (7 cases; 2.3%)., Conclusion: At a mean follow-up period of 3.8 years, primary RTSA showed satisfactory clinical outcomes with a complication rate of 15.1%, a reoperation rate of 2.7%, and a revision rate of 2.3%. Scapular stress fracture appears to be the most common complication after RTSA in the Korean population., (Copyright © 2024. Published by Elsevier Inc.)
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- 2024
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28. Sustainable production of microbial protein from carbon dioxide in the integrated bioelectrochemical system using recycled nitrogen sources.
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Lee YJ, Moon BC, Lee DK, Ahn JH, Gong G, Um Y, Lee SM, Kim KH, and Ko JK
- Abstract
Given the urgency of climate change, it is imperative to develop innovative technologies for repurposing CO
2 into value-added products to achieve carbon neutrality. Additionally, repurposing nitrogen-source-derived wastewater streams is crucial, focusing on sustainability rather than conventional nitrogen removal in wastewater treatment plants. In this context, microbial protein (MP) production presents a sustainable and promising approach for transforming recovered low-value resources into high-quality feed and food. We assessed MP production by hydrogen-oxidizing bacteria (HOB) utilizing CO2 and various nitrogen sources. Specifically, we investigated MP production by two different HOB strains, Cupriavidus necator H16 and Xanthobacter viscosus 7d, within an integrated water-splitting biosynthetic system that generates in situ H2 via water electrolysis. The electroautotrophically produced MPs of C. necator H16 and X. viscosus 7d exhibited amino acid contents of 555 and 717 mg protein/g cell dry weight, with 243 and 299 mg essential amino acid/g cell dry weight, respectively. They could serve as viable alternatives to conventional food/feed sources like fishmeal or soybean protein. Ammonium-rich wastewater streams are preferable for MP production in integrated bioelectrochemical systems. This study provides valuable insights into sustainable, carbon-neutral MP production using CO2 , water, renewable electricity, and recycled nitrogen sources., 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.)- Published
- 2024
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29. Needs of Patients With Gynecologic Cancer and Their Caregivers for Obtaining mHealth-Supported Self-Management: Focus Group Study.
- Author
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Campbell GB, Kim H, Klinedinst TC, Klinger J, Lee YJ, and Donovan HS
- Subjects
- Humans, Female, Middle Aged, Adult, Aged, Male, Mobile Applications, Caregivers psychology, Genital Neoplasms, Female psychology, Genital Neoplasms, Female therapy, Genital Neoplasms, Female nursing, Telemedicine, Self-Management methods, Self-Management psychology, Focus Groups
- Abstract
Background: Family caregivers of individuals with gynecologic cancer experience high levels of distress. Web-based caregiver support interventions have demonstrated efficacy in improving caregiver outcomes. However, the lack of portability could be a limitation. Mobile health (mHealth) apps could fill this gap and facilitate communication between patient-caregiver dyads., Objective: We sought to obtain information on desired usage and features to be used to design an mHealth self-management support app targeting both patients with gynecologic cancer and their caregivers., Methods: We conducted Zoom focus groups with women who had been treated for gynecologic cancers (ovarian, fallopian, primary peritoneal, uterine, endometrial, cervical, and vulvar); patients were also asked to invite a self-identified "closest support person" (caregiver). A semistructured focus group guide was used to elicit information on patients' and caregivers' perceived gaps in information and support, desired features of an mHealth app, and interest in and preferences for app usage. After transcription, rapid qualitative analysis using a thematic matrix was used to identify common themes across groups., Results: A total of 8 groups were held. The final sample included 41 individuals with gynecologic cancer and 22 support persons or caregivers (total n=63). Patients were aged between 32 and 84 years, and most (38/41, 93%) were White and married. For caregivers (n=22), 15 (68%) identified as male and 7 (32%) as female, with ages ranging between 19 and 81 years. Overall, 59% (n=13) of caregivers were spouses. Questions geared at eliciting 3 a priori topics yielded the following themes: topic 1-gaps in information and support: finding relevant information is time-consuming; patients and caregivers lack confidence in deciding the urgency of problems that arise and from whom to seek information and guidance; topic 2-desired features of the mHealth app: patients and caregivers desire centralized, curated, trustworthy information; they desire timely recommendations tailored to specific personal and cancer-related needs; they desire opportunities to interact with clinical and peer experts through the app; and topic 3-interest and preferences for app usage: need for private space in the app for patients and caregivers to get information and support without the others' knowledge; patients and caregivers desire having control over sharing of information with other family members., Conclusions: Designing a single mHealth app to be used by patients and caregivers presents unique challenges for intervention designers and app developers. Implications of the study suggest that app developers need to prioritize flexibility in app functionality and provide individuals the ability to control information sharing between patients and caregivers., (©Grace B Campbell, Hansol Kim, Tara C Klinedinst, Julie Klinger, Young Ji Lee, Heidi S Donovan. Originally published in JMIR Cancer (https://cancer.jmir.org), 03.10.2024.)
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- 2024
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30. Mesenchymal stem cells with an enhanced antioxidant capacity integrate as smooth muscle cells in a model of diabetic detrusor underactivity.
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Ryu CM, Kim Y, Shin JH, Lee S, Ju H, Nam YJ, Kwon H, Jo MY, Lee J, Im HJ, Jang MG, Hong KS, Chung HM, Song SH, Choo MS, Kim SW, Park J, and Shin DM
- Subjects
- Animals, Urinary Bladder, Underactive metabolism, Urinary Bladder, Underactive physiopathology, Disease Models, Animal, Rats, Mesenchymal Stem Cells metabolism, Antioxidants metabolism, Myocytes, Smooth Muscle metabolism
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- 2024
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31. Angiogenic properties and intercellular communication of differentiated porcine endothelial cells in vascular therapy.
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Seo BG, Lee IW, Kim HJ, Lee YJ, Kim O, Lee JH, Lee JH, and Hwangbo C
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- Animals, Swine, Humans, Mice, Coculture Techniques, Cells, Cultured, Gap Junctions metabolism, Cell Differentiation, Neovascularization, Physiologic, Endothelial Cells cytology, Endothelial Cells metabolism, Cell Communication
- Abstract
Endothelial cell dysfunction can lead to various vascular diseases. Blood flow disorder is a common symptom of vascular diseases. Regenerative angiogenesis, which involves transplanting vascular cells or stem cells into the body to shape new vasculature, can be a good therapeutic strategy. However, there are several limitations to using autologous cells from the patients themselves. We sought to investigate the new vascular cells that can play a role in the formation of angiogenesis in vivo using stem cells from alternative animals suitable for cellular therapy. Porcine is an optimal animal model for xenotransplantation owing to its physiological similarity to humans. We used differentiated porcine endothelial cells (pECs) as a therapeutic strategy to restore vessel function. Differentiated pECs formed vessel-like structures in mice, distinguishing them from stem cells. MMPs activity and migration assays indicated that differentiated pECs possessed angiogenic potential. Tube formation and 3D spheroid sprouting assays further confirmed the angiogenic phenotype of the differentiated pECs. Immunofluorescence and immunoprecipitation analyses revealed claudin-mediated tight junctions and connexin 43-mediated gap junctions between human ECs and differentiated pECs. Additionally, the movement of small RNA from human ECs to differentiated pECs was observed under co-culture conditions. Our findings demonstrated the in vivo viability and angiogenetic potential of differentiated pECs and highlighted the potential for intercellular communication between human and porcine ECs. These results suggest that transplanted cells in vascular regeneration completed after cell therapy have the potential to achieve intercellular communication within the body., (© 2024. The Author(s).)
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- 2024
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32. Methyl Gallate Suppresses Canine Mammary Gland Tumors by Inducing Apoptosis and Anti-angiogenesis.
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Choi J, Choi JY, Jang H, Jang YJ, Song J, Kim GM, and Seol JW
- Subjects
- Animals, Dogs, Female, Cell Line, Tumor, Mice, Mammary Neoplasms, Animal drug therapy, Mammary Neoplasms, Animal pathology, Cell Proliferation drug effects, Apoptosis drug effects, Gallic Acid analogs & derivatives, Gallic Acid pharmacology, Gallic Acid therapeutic use, Cell Movement drug effects, Angiogenesis Inhibitors pharmacology, Neovascularization, Pathologic drug therapy, Neovascularization, Pathologic pathology, Xenograft Model Antitumor Assays, Cell Survival drug effects
- Abstract
Background/aim: Methyl gallate (MG), a plant phenolic compound, has known anticancer properties. However, its effects on canine mammary gland tumors (CMTs) are unclear. This study evaluated the impact of MG on cell viability, migration, and apoptosis in two CMT cell lines., Materials and Methods: CMT-U27 and CF41.mg cells were used. In vitro experiments included MTT and scratch assays, Annexin-V/propidium iodide double staining, immunocytochemistry, and western blot analyses. An in vivo CMT xenograft mouse model was also used to observe the effects of MG on tumor growth and vasculature. Immunohistochemistry was performed to analyze vessel density and apoptosis in tumor tissues. Cell migration and tube formation assays with canine aortic endothelial cells assessed the anti-angiogenic effects of MG., Results: Data showed a significant decrease in cell viability and migration in both CMT cell lines after 24 h exposure to various MG concentrations. MG treatment induced dose-dependent apoptotic cell death and elevated cleaved caspase-3 expression. In vivo experiments confirmed tumor growth suppression 21 days post-treatment with 40 mg/kg MG. Tumor tissues displayed increased cleaved caspase-3 and reduced vessel density. MG also inhibited cell migration and disrupted tube formation in canine endothelial cells., Conclusion: MG has potential as an anticancer drug for CMTs by promoting apoptotic cell death and reducing angiogenesis, highlighting its therapeutic promise., (Copyright © 2024 International Institute of Anticancer Research (Dr. George J. Delinasios), All rights reserved.)
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- 2024
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33. Similar Seasonality in Childhood-Onset, Pediatric, and Adulthood-Onset Vitiligo: A Common Data Model Analysis of 16 Real-World Databases.
- Author
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Lee YJ, Lee Y, Kim MS, Lew BL, and Kwon SH
- Abstract
Competing Interests: The authors have nothing to disclose.
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- 2024
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34. Ineffectiveness of 6,2',4'-trimethoxyflavone in mitigating cerebral ischemia/reperfusion injury after post-reperfusion administration in rats.
- Author
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Woo CW, Choi MY, Heo H, Chae YJ, Sung YS, Choi Y, and Woo DC
- Subjects
- Animals, Rats, Male, Magnetic Resonance Imaging methods, Brain Ischemia diagnostic imaging, Brain Ischemia drug therapy, Flavones pharmacology, Flavones therapeutic use, Disease Models, Animal, Reperfusion Injury diagnostic imaging, Rats, Sprague-Dawley
- Abstract
Background: Pharmacological inhibition of aryl hydrocarbon receptor (AhR) activation after ischemia alleviates cerebral ischemia/reperfusion (IR) injury., Purpose: To investigate whether AhR antagonist administration after reperfusion was also effective in attenuating cerebral IR injury., Material and Methods: A total of 24 Sprague-Dawley rats were divided into the sham-operated group (no IR), control group (IR), and 6,2',4'-trimethoxyflavone (TMF) group (IR + TMF administration), with 10 rats assigned to each group. Cerebral IR injury was induced by 60 min of middle cerebral artery occlusion followed by reperfusion. TMF (5 mg/kg) was used as the AhR antagonist and was administered intraperitoneally immediately after reperfusion. Cerebral IR injury was observed using magnetic resonance imaging (MRI) and neurobehavioral assessments at baseline, immediately after ischemia, and at 3 days after ischemia., Results: On MRI, the TMF group showed no significant differences in relative apparent diffusion coefficient (ADC), T2, and fractional anisotropy (FA) values; midline shift value; and infarct volume. In terms of neurobehavioral function, factors such as grip strength, contralateral forelimb use, time to touch, and time to remove adhesive tape from the forepaw, were also not significantly different between the control and TMF groups., Conclusion: This study demonstrated that AhR treatment after reperfusion had no noticeable effect on reducing cerebral IR injury in rats., Competing Interests: Declaration of conflicting interestsThe authors declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
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- 2024
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35. Corrigendum to "Dopamine-modified hyaluronic acid (DA-HA) as a novel dopamine-mimetics with minimal autoxidation and cytotoxicity" [Redox Biol. 76 (2024) 103320].
- Author
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Kim S, Kim YJ, Park KH, Huh KM, Kang SW, Lee CJ, and Woo DH
- Published
- 2024
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36. From lab to wearables: Innovations in multifunctional hydrogel chemistry for next-generation bioelectronic devices.
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Lee HK, Yang YJ, Koirala GR, Oh S, and Kim TI
- Subjects
- Humans, Biocompatible Materials chemistry, Animals, Wearable Electronic Devices, Hydrogels chemistry
- Abstract
Functional hydrogels have emerged as foundational materials in diagnostics, therapy, and wearable devices, owing to their high stretchability, flexibility, sensing, and outstanding biocompatibility. Their significance stems from their resemblance to biological tissue and their exceptional versatility in electrical, mechanical, and biofunctional engineering, positioning themselves as a bridge between living organisms and electronic systems, paving the way for the development of highly compatible, efficient, and stable interfaces. These multifaceted capability revolutionizes the essence of hydrogel-based wearable devices, distinguishing them from conventional biomedical devices in real-world practical applications. In this comprehensive review, we first discuss the fundamental chemistry of hydrogels, elucidating their distinct properties and functionalities. Subsequently, we examine the applications of these bioelectronics within the human body, unveiling their transformative potential in diagnostics, therapy, and human-machine interfaces (HMI) in real wearable bioelectronics. This exploration serves as a scientific compass for researchers navigating the interdisciplinary landscape of chemistry, materials science, and bioelectronics., 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.)
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- 2024
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37. The interplay of social support and education on diabetes knowledge: a focus on Korean American women.
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Yoon YJ, An S, Choi YJ, and Lee HY
- Subjects
- Humans, Female, Cross-Sectional Studies, Middle Aged, Adult, Educational Status, Republic of Korea ethnology, United States, Surveys and Questionnaires, Aged, Social Support, Health Knowledge, Attitudes, Practice ethnology, Asian psychology, Diabetes Mellitus ethnology, Emigrants and Immigrants psychology
- Abstract
Objective: Although diabetes is one of the leading causes of death among Korean Americans, the levels and predictors of diabetes knowledge in this group have not been sufficiently reported. This study aimed to (1) describe the level of diabetes knowledge of Korean immigrant women in the U.S. and (2) examine whether there is an interaction effect between social support and education on diabetes knowledge., Design: This study conducted a cross-sectional survey design. The sample included 227 Korean immigrant women living in the southeast region of the U.S. The fourteen items of the Diabetes Knowledge Test were used to assess the diabetes knowledge level of Korean American women. A multiple linear regression analysis was conducted to examine the interaction effect between social support and education on diabetes knowledge., Results: Only 6% of the participants presented a good diabetes knowledge level, 12.5% had a poor level, and the majority (81.5%) had a moderate level. We found a significant interaction effect between social support and education on diabetes knowledge. The highest diabetes knowledge was observed when individuals with a lower education level had higher social support., Conclusion: Future health practices and policies may focus on increasing knowledge among Korean American women with lower education levels and lower social support. Implementing peer-led initiatives can enhance diabetes knowledge and encourage better self-care practices within the community.
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- 2024
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38. National Trends and Outcomes in the Operative Management of Thyroid Storm.
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Seo YJ, Chervu N, Benharash P, and Wu JX
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- Humans, Female, Male, Retrospective Studies, Middle Aged, United States epidemiology, Adult, Postoperative Complications epidemiology, Aged, Incidence, Treatment Outcome, Thyroid Crisis mortality, Thyroid Crisis surgery, Thyroidectomy statistics & numerical data
- Abstract
Background: Thyroid storm is a rare but potentially lethal manifestation of thyrotoxicosis. Guidelines recommend nonoperative management of thyroid storm, but thyroidectomy can be performed if patients fail medical therapy or need immediate resolution of the storm. Outcomes of thyroidectomy for management of thyroid storm remain ill-defined., Methods: Using the National Inpatient Sample from 2016 to 2020, a retrospective analysis was conducted of patients admitted with thyroid storm. Outcomes of interest included operative complications and mortality. Multivariable logistic regression was performed to assess factors associated with receiving thyroidectomy and mortality., Results: An estimated 16,175 admissions had a diagnosis of thyroid storm. The incidence of thyroid storm increased from .91 per 100,000 people in 2016 to 1.03 per 100,000 people in 2020, with a concomitant increase in mortality from 2.9% to 5.3% ( P < .001). Operative intervention was pursued in 635 (3.9%) cases with a perioperative complication rate of 30%. On multivariable regression, development of acute decompensated heart failure (adjusted odds ratio [AOR] 1.66, 95% Confidence Interval [CI] 1.03-2.68, P = .037) and acute renal failure (AOR 2.10, 95% CI 1.17-3.75, P = .013) increased odds of receiving surgery. The same multivariable model did not show a significant association between thyroidectomy and mortality., Discussion: The incidence of thyroid storm and associated mortality increased during the study period. Thyroidectomy is rarely performed during the same admission, with an overall perioperative complication rate of 30% and no effect on mortality. Patients with acute decompensated heart failure and renal failure were more likely to receive an operative intervention., Competing Interests: Declaration of Conflicting InterestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
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- 2024
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39. Dopamine-modified hyaluronic acid (DA-HA) as a novel dopamine-mimetics with minimal autoxidation and cytotoxicity.
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Kim S, Kim YJ, Park KH, Huh KM, Kang SW, Lee CJ, and Woo DH
- Subjects
- Animals, Mice, Parkinson Disease drug therapy, Parkinson Disease metabolism, Neurons drug effects, Neurons metabolism, Rats, Disease Models, Animal, Male, Humans, Hyaluronic Acid chemistry, Hyaluronic Acid pharmacology, Dopamine metabolism, Dopamine pharmacology, Oxidation-Reduction, Oxidopamine
- Abstract
Dopamine-modified hyaluronic acid (DA-HA) has been initially developed as an efficient coating and adhesion material for industrial uses. However, the biological activity and safety of DA-HA in the brain have not been explored yet. Here, we report a series of evidence that DA-HA exhibits similar functionality as dopamine (DA), but with much lower toxicity arising from autoxidation. DA-HA shows very little autoxidation even after 48-h incubation. This is profoundly different from DA and its derivatives including l-DOPA, which all induce severe neuronal death after pre-autoxidation, indicating that autoxidation is the cause of neuronal death. Furthermore, in vivo injection of DA-HA induces significantly lower toxicity compared to 6-OHDA, a well-known oxidized and toxic form of DA, and alleviates the apomorphine-induced rotational behavior in the 6-OHDA animal model of Parkinson's disease. Our study proposes that DA-HA with DA-like functionalities and minimal toxicity has a great potential to treat DA-related disease., Competing Interests: Declaration of competing interest A patent was filed (KR 10-2022-0058461/2023.05.11) by the Institute for Basic Science (IBS) and Korea Institute of Toxicology (KIT)., (Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.)
- Published
- 2024
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40. Clinical Efficacy of MiSight 1 day Soft Contact Lenses in Korean Myopic Children.
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Kim HK, Jo MH, Jo YJ, Park YK, and Lee JS
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- Humans, Child, Female, Male, Adolescent, Republic of Korea, Child, Preschool, Follow-Up Studies, Orthokeratologic Procedures methods, Treatment Outcome, Retrospective Studies, Myopia therapy, Myopia physiopathology, Contact Lenses, Hydrophilic, Visual Acuity physiology, Refraction, Ocular physiology
- Abstract
Objectives: This study aimed to investigate the clinical efficacy of MiSight 1 day soft contact lenses (MiSight CL) in Korean children with mild-to-moderate myopia. In addition, the study compared the effects of MiSight CL in children who had or had not previously used orthokeratology contact lenses (Ortho-K)., Methods: A total of 66 children aged 5 to 16 years, who were prescribed MiSight CL, were included in the study. Based on a myopia degree of -4 diopters (D), children were divided into mild and severe myopia groups to compare the effectiveness of myopia suppression. In addition, 55 eyes previously using Ortho-K were compared with 76 eyes using MiSight CL for the first time., Results: The average follow-up period was 6.58±3.74 months. The average refractive value before using MiSight CL was 3.64±1.56 D, and there was no significant change in the final visit. Comparing myopia suppression between different degrees of myopia and previous use of Ortho-K lenses, there was no significant change in refractive error before and after using MiSight CL (unpaired t test, P >0.05). The main reason for Ortho-K failure was low visual acuity after correction. Regardless of Ortho-K history, children showed good visual acuity after wearing MiSight CL, and no other side effects were observed., Conclusions: MiSight CL effectively inhibited the progression of myopia in Korean children with mild-to-moderate myopia. MiSight CL offer the advantage of easy application, making them a viable alternative when Ortho-K are not suitable., Competing Interests: The authors have no funding or conflicts of interest to disclose., (Copyright © 2024 Contact Lens Association of Ophthalmologists.)
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- 2024
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41. A novel indole derivative, 2-{3-[1-(benzylsulfonyl)piperidin-4-yl]-2-methyl-1H-indol-1-yl}-1-(pyrrolidin-1-yl)ethenone, suppresses hedgehog signaling and drug-resistant tumor growth.
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Jung JH, Lee H, Jeon J, Lee YJ, Nada H, Kim M, Lee H, Bhattarai D, Lee K, and Ko HW
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- Animals, Humans, Mice, Smoothened Receptor antagonists & inhibitors, Smoothened Receptor metabolism, Cell Line, Tumor, Cell Proliferation drug effects, Mice, Nude, Carcinoma, Basal Cell drug therapy, Carcinoma, Basal Cell pathology, Carcinoma, Basal Cell metabolism, Structure-Activity Relationship, Xenograft Model Antitumor Assays, Drug Resistance, Neoplasm drug effects, Signal Transduction drug effects, Hedgehog Proteins metabolism, Hedgehog Proteins antagonists & inhibitors, Indoles pharmacology, Indoles chemistry, Indoles chemical synthesis, Antineoplastic Agents pharmacology, Antineoplastic Agents chemical synthesis, Antineoplastic Agents chemistry
- Abstract
The Hedgehog (Hh) signaling pathway plays important roles in various physiological functions. Several malignancies, such as basal cell carcinoma (BCC) and medulloblastoma (MB), have been linked to the aberrant activation of Hh signaling. Although therapeutic drugs have been developed to inhibit Hh pathway-dependent cancer growth, drug resistance remains a major obstacle in cancer treatment. Here, we show that the newly identified, 2-{3-[1-(benzylsulfonyl)-1,2,3,6-tetrahydropyridin-4-yl]-2-methyl-1H-indol-1-yl}-1-(pyrrolidin-1-yl)ethenone analog (LKD1214) exhibits comparable potency to vismodegib in suppressing the Hh pathway activation. LKD1214 represses Smoothened (SMO) activity by blocking its ciliary translocation. Interestingly, we also identified that it has a distinctive binding interface with SMO compared with other SMO-regulating chemicals. Notably, it maintains an inhibitory activity against the Smo
D477H mutant, as observed in a patient with vismodegib-resistant BCC. Furthermore, LKD1214 inhibits tumor growth in the mouse model of MB. Collectively, these findings suggest that LKD1214 has the therapeutic potential to overcome drug-resistance in Hh-dependent cancers., (© 2024 The Author(s). Archiv der Pharmazie published by Wiley‐VCH GmbH on behalf of Deutsche Pharmazeutische Gesellschaft.)- Published
- 2024
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42. Lazertinib in EGFR-Variant Non-Small Cell Lung Cancer With CNS Failure to Prior EGFR Tyrosine Kinase Inhibitors: A Nonrandomized Controlled Trial.
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Hong MH, Choi YJ, Ahn HK, Lim SM, Keam B, Kim DW, Kim TM, Youk J, Kim YJ, Hwang S, Kim S, Kim JW, Kim HR, and Kang JH
- Subjects
- Humans, Male, Female, Middle Aged, Aged, Adult, Aged, 80 and over, Brain Neoplasms secondary, Brain Neoplasms drug therapy, Brain Neoplasms genetics, Progression-Free Survival, Central Nervous System Neoplasms drug therapy, Central Nervous System Neoplasms secondary, Republic of Korea, Tyrosine Kinase Inhibitors, Carcinoma, Non-Small-Cell Lung drug therapy, Carcinoma, Non-Small-Cell Lung pathology, Carcinoma, Non-Small-Cell Lung genetics, ErbB Receptors antagonists & inhibitors, ErbB Receptors genetics, Lung Neoplasms drug therapy, Lung Neoplasms pathology, Lung Neoplasms genetics, Protein Kinase Inhibitors therapeutic use, Protein Kinase Inhibitors adverse effects
- Abstract
Importance: EGFR-variant non-small cell lung cancer (NSCLC) is associated with a high rate of central nervous system (CNS) metastases, even with treatment with first-generation or second-generation epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs)., Objective: To investigate CNS activity with lazertinib, a third-generation EGFR TKI., Design, Setting, and Participants: This multicenter single-arm, phase 2 nonrandomized controlled trial was conducted in South Korea and included patients with EGFR-variant NSCLC who had asymptomatic or mildly symptomatic brain metastases after unsuccessful treatment with first-generation or second-generation EGFR TKIs. Data were collected from June 2021 to April 2022, with a data cutoff date of December 15, 2022., Exposure: Lazertinib, 240 mg, once daily., Main Outcomes and Measures: The primary end point was intracranial objective response rate (iORR) in the evaluable population according to the Response Evaluation Criteria in Solid Tumours version 1.1 assessed by the investigators. Secondary end points included intracranial progression-free survival (iPFS) and iORR in patients with T790M-negative disease and isolated CNS progression as well as overall ORR, duration of response, intracranial duration of response, disease control rate, overall survival, cerebrospinal fluid penetration of lazertinib, and safety., Results: Among 40 included patients, 25 (63%) were women, and the median (range) age was 63 (29-85) years. A total of 38 patients were evaluable for tumor response, including 12 patients with leptomeningeal metastases. At data cutoff, the median (range) follow-up was 13.6 (2.9-17.7) months. The iORR for the evaluable population was 55% (21 of 38; 95% CI, 38.3-71.4); for patients with T790M-positive disease, 80% (4 of 5; 95% CI, 28.4-99.5); for patients with T790M-negative disease, 43% (9 of 21; 95% CI, 21.8-66.0); and for patients with T790M-unknown disease, 67% (8 of 12; 95% CI, 34.9-90.1). The median iPFS was 15.8 months (95% CI, 15.2-not reached) for the evaluable population, 15.2 months (95% CI, 4.2-not reached) for the T790M-positive subgroup, 15.4 months (95% CI, 7.9-not reached) for the T790M-negative subgroup, and 18.0 months (95% CI, 3.9-not reached) for the T790M-unknown subgroup. The cerebrospinal fluid penetration rate of lazertinib was 46.2% (95% CI, 10.0-49.6), providing further support for its mechanism of intracranial response. Most adverse events were grade 1 or 2., Conclusions and Relevance: In this study, lazertinib had substantial CNS activity, regardless of T790M status, against the progression of intracranial metastases with or without leptomeningeal metastases after unsuccessful treatment with first-generation or second-generation EGFR TKIs in patients with metastatic EGFR-variant NSCLC. These results suggest that using lazertinib instead of brain local treatment could be a potential strategy in patients with EGFR-variant NSCLC whose CNS metastases progressed after prior EGFR TKI treatment., Trial Registration: ClinicalTrials.gov Identifier: NCT05326425.
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- 2024
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43. Survival of lung cancer patients according to screening eligibility using Korean Lung Cancer Registry 2014-2016.
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Lee S, Park EH, Jang BY, Kang YJ, Jung KW, Cha HS, and Choi KS
- Subjects
- Humans, Middle Aged, Male, Female, Aged, Republic of Korea epidemiology, Aged, 80 and over, Kaplan-Meier Estimate, Mass Screening methods, Proportional Hazards Models, Smoking adverse effects, Smoking epidemiology, Lung Neoplasms mortality, Lung Neoplasms diagnosis, Registries, Early Detection of Cancer
- Abstract
This study assessed survival for lung cancer patients meeting criteria for the National Lung Cancer Screening Program in Korea launched in 2019 and updated guideline reported by the US Preventive Service Task Force (USPSTF). We assessed all-cause mortality based on the Korean Lung Cancer Registry (KLCR), including lung cancer patients diagnosed in 2014-2016. We compared survival among lung cancer patients eligible for extended USPSTF criteria (age 50-80 years and ≥ 20 pack-years) and those meeting current criteria (age 54-74 years and ≥ 30 pack-years, current or within the past 15 years). The nearest neighbour propensity-score matching was performed to generate a matched set. Kaplan-Meier curves were generated to compare survival among groups; differences in survival were analyzed using the stratified log-rank test. The mortality risk was estimated based on a Cox proportional hazards regression model and the robust standard error was calculated. Of 8110 patients, 37.4% and 24.3% met the extended USPSTF eligibility criteria and National Lung Cancer Screening Program (NLCSP) criteria, respectively. Overall mortality risk was not significantly different between the extended younger age group and the NLCSP group (hazard ratio [HR] [95% confidence interval (CI)]: 0.78 [0.59-1.02]). The extended older age group had a significantly higher mortality risk (HR [95% CI]: 1.41 [1.26-1.58]). Mortality risk was not significantly different between patients who smoked 20-29 pack-years and those who smoked ≥ 30 pack-years (HR [95% CI]: 0.90 [0.79-1.03]). Lung cancer patients aged 50-53 years and those with a 20-29 pack-years smoking history exhibited similar mortality risk to individuals meeting current criteria, while patients aged 75-80 years were at a higher risk of death. Although we verified similar or higher mortality risks in extended subgroups, a careful assessment of the benefits and harms of the screening tests is necessary when contemplating the extension of criteria., (© 2024. The Author(s).)
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- 2024
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44. Dose escalation in radical radio(chemo)therapy for cervical and upper thoracic esophageal cancer with 3DCRT/IMRT (ChC&UES): a multicenter retrospective study.
- Author
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Zhao XH, Zhang WC, Wang X, Chen JQ, Xu YJ, Zhao KL, Huang W, Qian PD, Liu YT, Ge XL, Xia XJ, Weng CG, Gai CY, Wang HS, Gao HM, Shen WB, and Zhu SC
- Subjects
- Humans, Retrospective Studies, Female, Middle Aged, Male, Aged, Adult, Radiotherapy, Conformal methods, Survival Rate, Aged, 80 and over, Prognosis, Esophageal Neoplasms therapy, Esophageal Neoplasms mortality, Esophageal Neoplasms radiotherapy, Esophageal Neoplasms pathology, Chemoradiotherapy methods, Radiotherapy Dosage, Radiotherapy, Intensity-Modulated methods, Radiotherapy, Intensity-Modulated adverse effects
- Abstract
Background: Cervical and upper thoracic esophageal cancer (ESCA) presents treatment challenges due to limited clinical evidence. This multi-center study (ChC&UES) explores radical radio(chemo)therapy efficacy and safety, especially focusing on radiation dose., Method: We retrospectively analyzed clinical data from 1,422 cases across 8 medical centers. According to the radiation dose for primary gross tumor, patients were divided into standard dose radiotherapy (SD, 50-55 Gy) or high dose (HD, > 55 Gy) radiotherapy. HD was further subdivided into conventional- high-dose group (HD-conventional, 55-63 Gy) and ultra-high-dose group (HD-ultra, ≥ 63 Gy). Primary outcome was Overall Survival (OS)., Results: The median OS was 33.0 months (95% CI: 29.401-36.521) in the whole cohort. Compared with SD, HD shown significant improved survival in cervical ESCA in Kaplan-Meier (P = 0.029) and cox multivariate regression analysis (P = 0.024) while shown comparable survival in upper thoracic ESCA (P = 0.735). No significant difference existed between HD-conventional and HD-ultra in cervical (P = 0.976) and upper thoracic (P = 0.610) ESCA. Incidences of radiation esophagitis and pneumonia from HD were comparable to SD (P = 0.097, 0.240), while myosuppression risk was higher(P = 0.039). The Bonferroni method revealed that, for both cervical and upper thoracic ESCA, HD-ultra enhance the objective response rate (ORR) compared to SD (P < 0.05)., Conclusion: HD radiotherapy benefits cervical but not upper thoracic ESCA, while increasing bone marrow suppression risk. Further dose escalating (≥ 63 Gy) doesn't improve survival but enhances ORR., (© 2024. The Author(s).)
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- 2024
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45. Serum-Free Medium Supplemented with Haematococcus pluvialis Extracts for the Growth of Human MRC-5 Fibroblasts.
- Author
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Koh EJ, Heo SY, Park A, Lee YJ, Choi WY, and Heo SJ
- Abstract
Experiments are increasingly performed in vitro; therefore, cell culture technology is essential for scientific progress. Fetal bovine serum (FBS) is a key cell culture supplement providing growth factors, amino acids, and hormones. However, FBS is not readily available on the market, has contamination risks, and has ethical concerns. This study aimed to investigate Haematococcus pluvialis extracts (HE) as a potential substitute for FBS. Therefore, we assessed the effects of HE on cell maintenance, growth, and cycle progression in human lung fibroblasts (MRC-5). Cell progression and monosaccharide, fatty acid, and free amino acid compositions were analyzed using cell cycle analysis, bio-liquid chromatography, gas chromatography, and high-performance liquid chromatography, respectively. The results of nutritional profiles showed that the extracts contained essential amino acids required for synthesizing non-essential amino acids and other metabolic intermediates. Furthermore, most of the components present in HE were consistent with those found in FBS. HE enhanced cell viability and regulated cell cycle phases. Additionally, the interaction between growth factor cocktails and HE significantly improved cell viability, promoted cell cycle progression, and activated key cell cycle regulators, such as cyclin A and cyclin-dependent kinases 1 (CDK1). Our findings suggest that HE have considerable potential to substitute FBS in MRC-5 cell cultures and have functional and ethical advantages.
- Published
- 2024
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46. Discovery of a Small-Molecule Inhibitor Targeting the Biofilm Regulator BrpT in Vibrio vulnificus .
- Author
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Choi W, Lee H, Wang Q, Bang YJ, and Choi SH
- Abstract
Vibrio vulnificus , an opportunistic human pathogen, employs biofilm formation as a key survival and virulence mechanism. BrpT, a transcriptional regulator, is essential for V. vulnificus biofilm development by regulating the expression of biofilm-related genes. In this study, we aimed to identify a small molecule inhibitor of BrpT to combat V. vulnificus biofilm formation. High-throughput screening of 7,251 compounds using an Escherichia coli reporter strain carrying the arabinose-inducible brp T gene and a BrpT-activated promoter fused to the luxCDABE operon identified a hit compound, BTI (BrpT Inhibitor). BTI potently inhibited BrpT activity in V. vulnificus (EC
50 of 6.48 μM) without affecting bacterial growth or host cell viability. Treatment with BTI significantly reduced the expression of the BrpT regulon and impaired biofilm formation and colony rugosity in V. vulnificus , thus increasing its susceptibility to antibiotics. In vitro biochemical analyses revealed that BTI directly binds to BrpT and inhibits its transcriptional regulatory activity. The identification of BTI as a specific inhibitor of BrpT that effectively diminishes V. vulnificus biofilm formation provides a promising foundation for the development of novel anti-biofilm strategies, with the potential to address the growing challenge of antibiotic resistance and improve the treatment of biofilm-associated infections.- Published
- 2024
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47. Variation of volatile compounds and sensory profile for Protaetia brevitarsis larvae fermented with lactic acid bacteria and yeast.
- Author
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Cha JY, Han J, Heo J, Yu HH, Kim YJ, Jang HW, Kim MR, and Choi YS
- Subjects
- Animals, Humans, Female, Taste, Male, Saccharomyces cerevisiae metabolism, Yeasts metabolism, Gas Chromatography-Mass Spectrometry, Adult, Consumer Behavior, Volatile Organic Compounds metabolism, Volatile Organic Compounds chemistry, Fermentation, Larva metabolism, Larva growth & development, Larva microbiology, Odorants analysis, Lactobacillales metabolism
- Abstract
This study aimed to investigate the correlation between the composition of volatile compounds, consumer acceptance, and drivers of (dis)liking of Protaetia brevitarsis larvae fermented using lactic acid bacteria and yeast. Volatile compounds were analyzed using HS-SPME-Arrow-GC-MS, and a sensory evaluation was conducted with 72 consumers. A total of 113 volatile compounds were detected, and principal component analysis indicated that the samples could be divided into three groups. The calculated relative odor activity values (ROAV) revealed the presence of 27 compounds (ROAV >1). Volatile compounds with high ROAV were predominantly found during yeast fermentation. The sensory evaluation results indicated a strong correlation between low levels of off-odor intensity and high odor liking, emphasizing that odor profile had a more direct association with consumer acceptance than odor intensity. These findings suggest that yeast fermentation using volatile compounds, which positively influences consumer acceptance, is appropriate for Protaetia brevitarsis larvae., 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 The Authors. Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2024
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48. The effect of lung-recruitment maneuver on postoperative shoulder pain in patients undergoing laparoscopic cholecystectomy: a randomized controlled trial.
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Noh YJ, Kwon EJ, Bang YJ, Yoon SJ, Hwang HJ, Jeong H, Lee SM, and Shin YH
- Abstract
Purpose: Lung-recruitment maneuvers (LRM) have been shown to reduce postoperative pain after laparoscopic surgery. This study aimed to investigate the association of LRM with the incidence of shoulder pain after laparoscopic cholecystectomy., Methods: A randomized controlled study was conducted with 110 patients undergoing elective laparoscopic cholecystectomy from July 2022 to March 2023. Participants were randomized to receive either routine exsufflation or LRM at pneumoperitoneum release. The postoperative shoulder pain and abdominal pain were assessed at 1, 4, 6, 12, and 24 h after surgery using a numeric rating scale. Analgesic consumption and postoperative nausea or vomiting (PONV) were evaluated during the first 24 h after surgery., Results: The incidence of shoulder pain during the first 24 h after surgery was significantly lower in the LRM group compared to the control group (26.9 vs. 59.3%; P = 0.001). The median [interquartile range] score of worst shoulder pain was significantly lower compared to the control group (3 [2-3] vs 4 [3-5.5]; P = 0.003). Participants in the LRM group showed reduced abdominal pain at rest at 4 and 24 h after surgery, and experienced significantly lower intensities of abdominal pain during mobilization at all time points over 24 h after surgery. There were no significant differences in opioid consumption or the incidence of PONV between the groups., Conclusions: LRM reduces both the incidence and intensity of shoulder pain during 24 h after laparoscopic cholecystectomy. Additionally, LRM was associated with reduced intensity of abdominal pain during mobilization over the study period., (© 2024. The Author(s) under exclusive licence to Japanese Society of Anesthesiologists.)
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- 2024
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49. Serum-Free Media Formulation Using Marine Microalgae Extracts and Growth Factor Cocktails for Madin-Darby Canine Kidney and Vero Cell Cultures.
- Author
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Park A, Lee YJ, Jo E, Park GH, Heo SY, Koh EJ, Lee SH, Cha SH, and Heo SJ
- Subjects
- Animals, Dogs, Vero Cells, Chlorocebus aethiops, Culture Media, Serum-Free chemistry, Madin Darby Canine Kidney Cells, Cell Culture Techniques methods, Superoxide Dismutase metabolism, Microalgae chemistry, Cell Proliferation drug effects
- Abstract
The development of serum-free media (SFM) is critical to advance cell culture techniques used in viral vaccine production and address the ethical concerns and contamination risks associated with fetal bovine serum (FBS). This study evaluated the effects of marine microalgal extracts and growth factor cocktails on the activity of Madin-Darby canine kidney (MDCK) and Vero cells. Five marine microalgal species were used: Spirulina platensis (SP), Dunaliella salina (DS), Haematococcus pluvialis (HP), Nannochloropsis salina (NS), and Tetraselmis sp. (TS). DS and SP extracts significantly increased the proliferation rate of both MDCK and Vero cells. DS had a proliferation rate of 149.56% and 195.50% in MDCK and Vero cells, respectively, compared with that in serum-free medium (SFM). Notably, DS and SP extracts significantly increased superoxide dismutase (SOD) activity, which was 118.61% in MDCK cells and 130.08% in Vero cells for DS, and 108.72% in MDCK cells and 125.63% in Vero cells for SP, indicating a reduction in intracellular oxidative stress. Marine microalgal extracts, especially DS and SP, are feasible alternatives to FBS in cell culture as they promote cell proliferation, ensure safety, and supply essential nutrients while reducing oxidative stress.
- Published
- 2024
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50. Effects of MAFLD defined by fatty liver index or ultrasonography on kidney function decline in the general population.
- Author
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Lee YJ, Kim KM, Ko NG, Jin M, Na JH, and Park IH
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- Humans, Male, Female, Middle Aged, Retrospective Studies, Adult, Aged, Glomerular Filtration Rate, Ultrasonography, Kidney diagnostic imaging, Kidney physiopathology, Fatty Liver diagnostic imaging, Fatty Liver physiopathology
- Abstract
This study aimed to investigate whether metabolic dysfunction-associated fatty liver disease (MAFLD) defined by the fatty liver index (FLI) affects the decline in kidney function and whether this relationship is still observed in MAFLD defined by ultrasonography (USG). A retrospective cohort study was conducted using de-identified data from participants who received health checkups at Samsung Changwon Hospital between 2002 and 2018. The primary and secondary exposures were the presence of FLI- and USG-defined MAFLD, respectively. The primary outcome was 5-years slope of eGFR. The secondary outcome was a rapid decline in kidney function, defined as a 5-years slope of estimated glomerular filtration rate (eGFR) of less than - 3 mL/min/1.73 m
2 per year. A total of 37,500 participants were included in the analysis. Participants with FLI-defined MAFLD had a larger decline in 5-year eGFR slope than those without FLI-defined MAFLD (beta coefficients - 0.11; 95% CI - 0.14 to - 0.08). Participants with FLI-defined MAFLD had a higher risk of rapid kidney function decline than those without FLI-defined MAFLD (odds ratio 1.33; 95% confidence intervals (CIs) 1.05-1.69). However, USG-defined MAFLD was less related to kidney function decline. In conclusion, the presence of FLI-defined MAFLD was associated with larger and faster kidney function decline., (© 2024. The Author(s).)- Published
- 2024
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