99 results on '"Song AY"'
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2. Protecting endangered marine species in CITES: China and selective socialization
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Song, AY and Song, AY
- Abstract
In the contemporary era, a few global North countries have been dominant actors in global environmental governance. However, as their approach has resulted in an imbalance of benefits and costs across regions, there has been an increasing effort to incorporate socio-economic and livelihoods aspects into wildlife protection strategies. Within this ongoing discussion, I explore how China, as a rising power, approached the environmental norms of protecting endangered marine species in the last decades. By tracing its policy development from 2003 to 2019, I find that China has changed its policy from challenging to reconciling and finally to reconfiguring its governance practice. Drawing upon socialization scholarship, I argue that China’s policy adaptation demonstrates selective socialization, where an actor makes issue-specific decisions involving reconciling the discrepancy between international norms and domestic interests. This study has far-reaching implications on China's potential role and influence in global governance on protecting wildlife. First, its marine biodiversity policy reaches beyond existing approaches and represents values and interests with regard to marine species. Second and relatedly, China’s socialization processes are bidirectional, generating alternative approaches to international norms within existing governance practice.
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- 2023
3. The maritime security fallout from North Korea's fisheries policy
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Hastings, J and Song, AY
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Fisheries ,0502 Environmental Science and Management, 1606 Political Science, 1801 Law - Abstract
North Korea's fisheries policy has created a wide range of maritime security challenges within the larger Northeast Asia region. North Korea has focused on increasing fish production and bringing in income, but its political economy has resulted in fisheries exploitation that is neither monitored nor controlled directly by the state. This is further complicated by United Nations sanctions that prohibit the legal export of fisheries product, and a series of maritime boundary disputes between North Korea and other countries. Combined, these factors lead to a range of maritime security problems, including fisheries smuggling, IUU fishing in both North Korean waters and elsewhere in the region, inter-state maritime clashes, arms proliferation, and maritime piracy. This has a number of policy implications for fisheries management and engagement with North Korea on maritime issues.
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- 2022
4. China’s 21st century maritime silk road: Challenges and opportunities to coastal livelihoods in ASEAN countries
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Song, AY, Fabinyi, M, Song, AY, and Fabinyi, M
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- 2022
5. China’s approach to global fisheries: power in the governance of anti-illegal, unreported and unregulated fishing
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Song, AY, Fabinyi, M, Barclay, K, Song, AY, Fabinyi, M, and Barclay, K
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As a significant actor in global governance, China has become increasingly active in addressing global environmental challenges. However, Chinese fishing practices do not conform with its policies. How do we understand China’s apparently incoherent stance? Using the case of illegal, unreported, and unregulated (IUU) fishing governance, we explore why China shifted its approach from reluctance to engagement while still allowing the Chinese fleet’s IUU fishing activities to some extent. We find that China safeguards its self-interest by shaping domestic and international rules on anti-IUU fishing while pursuing means of legitimising its actions and intangible aspects of power in the oceans. Our findings have far-reaching implications. First, China’s notion of environmental responsibility is likely to remain within the scope of its interests and what China can control. Second, China’s global environmental approach can be understood as the pursuit of intangible aspects of great power status in addition to its tangible interests.
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- 2022
6. Engaging North Korea: environmental cooperation in peacebuilding
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Song, AY and Hastings, JV
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16 Studies in Human Society ,International Relations - Abstract
Despite ongoing political tensions and sanctions, North Korea and South Korea have made some progress in forestry cooperation. To explain the persistence of this cooperation, we draw upon a local approach to environmental peacebuilding. By tracing inter-Korean forestry cooperation from 2000 to 2018, this study finds that cooperation persists because of a North Korean desire for cooperation specifically on the environment, and because non-governmental organisations (NGOs) with close ties to the South Korean government provided an alternative way to implement inter-Korean forestry cooperation through periods of tension. Our findings also highlight the benefits of using environmental cooperation as a way to engage with North Korea in a depoliticised and sanction-free context. This finding has far-reaching implications for environmental peacebuilding. First, NGOs can pave the way for engaging conflict parties even in the face of ongoing hostility. Second, environmental cooperation provides an opportunity for a win–win strategy for conflict parties.
- Published
- 2020
7. A kinematic analysis of relative stability of the lower extremities between subjects with and without chronic low back pain.
- Author
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Jo HJ, Song AY, Lee KJ, Lee DC, Kim YH, Sung PS, Jo, Hang Jin, Song, Ah Young, Lee, Kyung Jun, Lee, Dongchul C, Kim, Yoon Hyuk, and Sung, Paul S
- Abstract
Even though a number of studies have evaluated postural adjustments based on kinematic changes in subjects with low back pain (LBP), kinematic stability has not been examined for abnormal postural responses during the one leg standing test. The purpose of this study was to evaluate the relative kinematic stability of the lower extremities and standing duration in subjects with and without chronic LBP. In total, 54 subjects enrolled in the study, including 28 subjects without LBP and 26 subjects with LBP. The average age of the subjects was 37.8 ± 12.6 years and ranged from 19 to 63 years. The outcome measures included normalized holding duration and relative kinematic stability. All participants were asked to maintain the test position without visual input (standing on one leg with his/her eyes closed and with the contra lateral hip flexed 90°) for 25 s. The age variable was used as a covariate to control confounding effects for the data analyses. The control group demonstrated significantly longer holding duration times (T = -2.78, p = 0.007) than the LBP group (24.6 ± 4.2 s vs. 20.5 ± 6.7 s). For the relative kinematic stability, there was a difference in dominance side (F = 9.91, p = 0.003). There was a group interaction between side and lower extremities (F = 11.79, p = 0.001) as well as an interaction between age and dominance side (F = 7.91, p = 0.007). The relative kinematic stability had a moderate negative relationship with age (r = -0.60, p = 0.007) in subjects without LBP. Clinicians need to understand the effects of age and relative stability, which decreased significantly in the single leg holding test, in subjects with LBP in order to develop effective rehabilitation strategies. [ABSTRACT FROM AUTHOR]
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- 2011
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8. Overcoming the Energy vs Power Dilemma in Commercial Li-Ion Batteries via Sparse Channel Engineering.
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Kim D, Magasinski A, Sun Y, Wang B, Narla A, Lee SH, Yoo H, Jhulki S, Song AY, Hah J, Zhu T, Alexeev A, and Yushin G
- Abstract
Improvements in both the power and energy density of lithium-ion batteries (LIBs) will enable longer driving distances and shorter charging times for electric vehicles (EVs). The use of thicker and denser electrodes reduces LIB manufacturing costs and increases energy density characteristics at the expense of much slower Li-ion diffusion, higher ionic resistance, reduced charging rate, and lower stability. Contrary to common intuition, we unexpectedly discovered that removing a tiny amount of material (<0.4 vol %) from the commercial electrodes in the form of sparsely patterned conical pores greatly improves LIB rate performance. Our research revealed that upon commercial production of high areal capacity electrodes, a very dense layer forms on the electrode surface, which serves as a bottleneck for Li-ion transport. The formation of sparse conical pore channels overcomes such a limitation, and the facilitated ion transport delivers much higher power without reduction in the practically attainable energy. Diffusion and finite element method-based simulations provide deep insights into the fundamentals of ion transport in such electrode designs and corroborate the experimental findings. The reported insights provide a major thrust to redesigning automotive LIB electrodes to produce cheaper, longer driving range EVs that retain fast charging capability., Competing Interests: The authors declare no competing financial interest., (© 2024 The Authors. Published by American Chemical Society.)
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- 2024
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9. A holistic platform for accelerating sorbent-based carbon capture.
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Charalambous C, Moubarak E, Schilling J, Sanchez Fernandez E, Wang JY, Herraiz L, Mcilwaine F, Peh SB, Garvin M, Jablonka KM, Moosavi SM, Van Herck J, Ozturk AY, Pourghaderi A, Song AY, Mouchaham G, Serre C, Reimer JA, Bardow A, Smit B, and Garcia S
- Abstract
Reducing carbon dioxide (CO
2 ) emissions urgently requires the large-scale deployment of carbon-capture technologies. These technologies must separate CO2 from various sources and deliver it to different sinks1,2 . The quest for optimal solutions for specific source-sink pairs is a complex, multi-objective challenge involving multiple stakeholders and depends on social, economic and regional contexts. Currently, research follows a sequential approach: chemists focus on materials design3 and engineers on optimizing processes4,5 , which are then operated at a scale that impacts the economy and the environment. Assessing these impacts, such as the greenhouse gas emissions over the plant's lifetime, is typically one of the final steps6 . Here we introduce the PrISMa (Process-Informed design of tailor-made Sorbent Materials) platform, which integrates materials, process design, techno-economics and life-cycle assessment. We compare more than 60 case studies capturing CO2 from various sources in 5 global regions using different technologies. The platform simultaneously informs various stakeholders about the cost-effectiveness of technologies, process configurations and locations, reveals the molecular characteristics of the top-performing sorbents, and provides insights on environmental impacts, co-benefits and trade-offs. By uniting stakeholders at an early research stage, PrISMa accelerates carbon-capture technology development during this critical period as we aim for a net-zero world., (© 2024. The Author(s).)- Published
- 2024
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10. Surgical Treatment of Enlarged Cervical Leiomyoma with Concomitant Uterine Prolapse: A Case Report.
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Song AY, Bae JY, Park JS, and Kim TH
- Abstract
This case report details the surgical treatment of a rare enlarged cervical leiomyoma with uterine prolapse in a 48-year-old woman. She presented to Konyang University Hospital with a palpable vaginal mass, lower abdominal pain, and urinary incontinence. Despite being nulliparous, she had severe chronic constipation due to schizophrenia medication and lived in a health care facility separated from her family. Pelvic examination revealed stage 3 uterine prolapse with a large necrotic cervical leiomyoma. A robot-assisted vaginal hysterectomy followed by sacrocolpopexy was performed using the Da Vinci Xi Surgical System. Histopathology confirmed cervical leiomyoma with squamous metaplasia. At a three-month follow-up, there were no complications, pelvic anatomy was restored, and urinary incontinence improved. Although the patient had a systemic infection due to the necrotic cervical leiomyoma, raising concerns about the increased risk of infection associated with mesh use, she was high-risk for pelvic organ prolapse (POP) recurrence due to her medical history and living situation. Therefore, she underwent concurrent surgeries with pre- and postoperative antibiotic treatment, and recovered without complications. Given that the risk of developing POP increases after a hysterectomy, in high-risk patients, as demonstrated in this case, the concurrent surgical correction of POP may be an effective strategy.
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- 2024
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11. Costs and outcomes associated with the administration of Intravenous Acetaminophen in neonates after esophageal atresia and tracheoesophageal fistula repair.
- Author
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Phillipi MA, Song AY, Yieh L, and Gong CL
- Abstract
Background: Over the last decade, the intravenous (IV) formulation of acetaminophen (APAP) has gained popularity as a safe and effective first-line analgesic in the neonatal intensive care unit and it is especially useful in peri-operative settings where oral agents are contraindicated. The primary objective was to examine the outcomes and costs associated with the use of IV APAP in combination with opioids versus opioids alone as a pain management strategy after neonatal esophageal atresia (EA) and tracheoesophageal fistula (TEF) repair., Methods: Data from the Pediatric Health Information System was used to examine 1137 hospitalizations for EA/TEF repair from October 2015 to September 2018. Neonates administered opioids only, or IV APAP in combination with opioids as pain management, were included., Results: Neonates receiving IV APAP experienced a longer median LOS, but a significantly lower mortality rate, a decreased mean daily cost, and reduced opioid use compared to neonates given only opioids. The two groups had no significant differences in pharmacy and total costs., Conclusion: Our findings suggest that the use of IV APAP alongside opioids in EA/TEF repair is associated with reduced mortality and opioid use, as well as longer LOS., Competing Interests: Declaration of competing interest None., (Copyright © 2024 Taiwan Pediatric Association. Published by Elsevier B.V. All rights reserved.)
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- 2024
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12. Intraoperative Complications and Perioperative and Surgical Outcomes of Single-Port Robotics-Assisted Sacrocolpopexy.
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Oh S, Yi J, Song AY, Jee J, Bae N, and Shin JH
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- Humans, Female, Retrospective Studies, Aged, Middle Aged, Treatment Outcome, Operative Time, Vagina surgery, Robotic Surgical Procedures adverse effects, Robotic Surgical Procedures methods, Pelvic Organ Prolapse surgery, Intraoperative Complications etiology, Intraoperative Complications epidemiology, Postoperative Complications etiology, Postoperative Complications epidemiology, Gynecologic Surgical Procedures methods, Gynecologic Surgical Procedures adverse effects
- Abstract
Introduction and Hypothesis: The objective was to assess intraoperative and postoperative complication rates, along with perioperative and surgical outcomes, following single-port robotics-assisted sacrocolpopexy., Methods: This retrospective case series included 200 patients who underwent single-port robotics-assisted sacrocolpopexy to treat Pelvic Organ Prolapse Quantification (POPQ) stage 2-4 symptomatic prolapse between April 2020 and August 2023 by a single surgeon. Intraoperative and postoperative complications and perioperative outcomes were evaluated for all the patients, whereas surgical outcomes for 74 patients were assessed at 1-year follow-up. Surgical failure was defined as the presence of any of the following: the presence of vaginal bulging symptoms, any prolapse beyond the hymen, or retreatment for prolapse., Results: During the study period, 200 single-port robotics-assisted sacrocolpopexies were performed. The median age and body mass index were 65.0 years and 24.6 kg/m
2 respectively. Most patients had POPQ stage 3 or 4 prolapse and underwent concomitant total hysterectomy. The median total operation time was 212.0 min, and none of the patients required conversion to laparoscopy or laparotomy. The intraoperative cystotomy rate was 2.5%, and one patient had a blood transfusion owing to presacral vessel injury. Postoperative complications of mesh exposure and wound hernia were 0.5% and 2.0% respectively. At 1 year postoperatively, the rate of composite surgical failure was 9.5%, with a 5.4% anatomical recurrence rate. None of the patients experienced apical prolapse recurrence, and one received anterior colporrhaphy for anterior compartment prolapse recurrence., Conclusions: Single-port robotics-assisted sacrocolpopexy is safe and effective, with low complication rates and favorable perioperative and surgical outcomes., (© 2024. The International Urogynecological Association.)- Published
- 2024
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13. Multivariate Machine Learning Models of Nanoscale Porosity from Ultrafast NMR Relaxometry.
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Fricke SN, Salgado M, Menezes T, Costa Santos KM, Gallagher NB, Song AY, Wang J, Engler K, Wang Y, Mao H, and Reimer JA
- Abstract
Nanoporous materials are of great interest in many applications, such as catalysis, separation, and energy storage. The performance of these materials is closely related to their pore sizes, which are inefficient to determine through the conventional measurement of gas adsorption isotherms. Nuclear magnetic resonance (NMR) relaxometry has emerged as a technique highly sensitive to porosity in such materials. Nonetheless, streamlined methods to estimate pore size from NMR relaxometry remain elusive. Previous attempts have been hindered by inverting a time domain signal to relaxation rate distribution, and dealing with resulting parameters that vary in number, location, and magnitude. Here we invoke well-established machine learning techniques to directly correlate time domain signals to BET surface areas for a set of metal-organic frameworks (MOFs) imbibed with solvent at varied concentrations. We employ this series of MOFs to establish a correlation between NMR signal and surface area via partial least squares (PLS), following screening with principal component analysis, and apply the PLS model to predict surface area of various nanoporous materials. This approach offers a high-throughput, non-destructive way to assess porosity in c.a. one minute. We anticipate this work will contribute to the development of new materials with optimized pore sizes for various applications., (© 2024 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.)
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- 2024
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14. Accelerated epigenetic age at birth and child emotional and behavioura development in early childhood: a meta-analysis of four prospective cohort studies in ECHO.
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Song AY, Bulka CM, Niemiec SS, Kechris K, Boyle KE, Marsit CJ, O'Shea TM, Fry RC, Lyall K, Fallin MD, Volk HE, and Ladd-Acosta C
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- Child, Preschool, Humans, Infant, Newborn, DNA Methylation, Epigenesis, Genetic, Prospective Studies, Autism Spectrum Disorder, Premature Birth
- Abstract
Background: 'Epigenetic clocks' have been developed to accurately predict chronologic gestational age and have been associated with child health outcomes in prior work. Methods: We meta-analysed results from four prospective U.S cohorts investigating the association between epigenetic age acceleration estimated using blood DNA methylation collected at birth and preschool age Childhood Behavior Checklist (CBCL) scores. Results: Epigenetic ageing was not significantly associated with CBCL total problem scores (β = 0.33, 95% CI: -0.95, 0.28) and DSM-oriented pervasive development problem scores (β = -0.23, 95% CI: -0.61, 0.15). No associations were observed for other DSM-oriented subscales. Conclusions: The meta-analysis results suggest that epigenetic gestational age acceleration is not associated with child emotional and behavioural functioning for preschool age group. These findings may relate to our study population, which includes two cohorts enriched for ASD and one preterm birth cohort.; future work should address the role of epigenetic age in child health in other study populations. Abbreviations: DNAm: DNA methylation; CBCL: Child Behavioral Checklist; ECHO: Environmental Influences on Child Health Outcomes; EARLI: Early Autism Risk Longitudinal Investigation; MARBLES: Markers of Autism Risk in Babies - Learning Early Signs; ELGAN: Extremely Low Gestational Age Newborns; ASD: autism spectrum disorder; BMI: body mass index; DSM: Diagnostic and Statistical Manual of Mental Disorders.
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- 2023
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15. Associations of prenatal exposure to a mixture of persistent organic pollutants with social traits and cognitive and adaptive function in early childhood: Findings from the EARLI study.
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Song AY, Kauffman EM, Hamra GB, Dickerson AS, Croen LA, Hertz-Picciotto I, Schmidt RJ, Newschaffer CJ, Fallin MD, Lyall K, and Volk HE
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- Pregnancy, Child, Female, Humans, Child, Preschool, Persistent Organic Pollutants, Dichlorodiphenyl Dichloroethylene, Halogenated Diphenyl Ethers, Bayes Theorem, Sociological Factors, Cognition, Prenatal Exposure Delayed Effects chemically induced, Prenatal Exposure Delayed Effects epidemiology, Autism Spectrum Disorder chemically induced, Autism Spectrum Disorder epidemiology, Polychlorinated Biphenyls toxicity, Environmental Pollutants toxicity
- Abstract
Background: Literature suggests that maternal exposure to persistent organic pollutants (POPs) may influence child neurodevelopment. Evidence linking prenatal POPs and autism spectrum disorder has been inconclusive and few studies have examined the mixture effect of the POPs on autism-related traits., Objective: To evaluate the associations between prenatal exposure to a mixture of POPs and autism-related traits in children from the Early Autism Risk Longitudinal Investigation study., Methods: Maternal serum concentrations of 17 POPs (11 polychlorinated biphenyls [PCBs], 4 polybrominated diphenyls [PBDEs], and 2 persistent pesticides) in 154 samples collected during pregnancy were included in this analysis. We examined the independent associations of the natural log-transformed POPs with social, cognitive, and behavioral traits at 36 months of age, including Social Responsiveness Scale (SRS), Mullen Scales of Early Learning-Early Learning Composite (MSEL-ELC), and Vineland Adaptive Behavior Scales (VABS) scores, using linear regression models. We applied Bayesian kernel machine regression and quantile g-computation to examine the joint effect and interactions of the POPs., Results: Higher ln-PBDE47 was associated with greater deficits in social reciprocity (higher SRS score) (β = 6.39, 95% CI: 1.12, 11.65) whereas higher ln-p,p'-DDE was associated with lower social deficits (β = -8.34, 95% CI: -15.32, -1.37). Positive associations were observed between PCB180 and PCB187 and cognitive (MSEL-ELC) scores (β = 5.68, 95% CI: 0.18, 11.17; β = 4.65, 95% CI: 0.14, 9.17, respectively). Adaptive functioning (VABS) scores were positively associated with PCB170, PCB180, PCB187, PCB196/203, and p,p'-DDE. In the mixture analyses, we did not observe an overall mixture effect of POPs on the quantitative traits. Potential interactions between PBDE99 and other PBDEs were identified in association with MSEL-ELC scores., Conclusions: We observed independent effects of PCB180, PCB187, PBDE47, and p,p' DDE with ASD-related quantitative traits and potential interactions between PBDEs. Our findings highlight the importance of assessing the effect of POPs as a mixture., 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 © 2023 Elsevier Inc. All rights reserved.)
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- 2023
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16. Opioid and Methadone Use for Infants With Surgically Treated Necrotizing Enterocolitis.
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Keane OA, Zamora AK, Ourshalimian S, Mahdi EM, Song AY, Kim E, Lakshmanan A, Kim ES, and Kelley-Quon LI
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- Infant, Newborn, Humans, Male, Infant, Child, Female, Analgesics, Opioid therapeutic use, Methadone therapeutic use, Cohort Studies, Pain, Postoperative drug therapy, Enterocolitis, Necrotizing surgery, Opioid-Related Disorders drug therapy, Infant, Newborn, Diseases
- Abstract
Importance: Necrotizing enterocolitis (NEC) requiring surgical intervention is the most common reason for surgical procedures in preterm neonates. Opioids are used to manage postoperative pain, with some infants requiring methadone to treat physiologic opioid dependence or wean from nonmethadone opioid treatment during recovery., Objective: To describe postoperative opioid use and methadone treatment for infants with surgically treated NEC and evaluate postoperative outcomes., Design, Setting, and Participants: A cohort study of infants with surgically treated NEC admitted from January 1, 2013, to December 31, 2022, to 48 Children's Hospital Association hospitals contributing data to the Pediatric Health Information System (PHIS) was performed. Infants who received methadone preoperatively, were aged 14 days or less at the time of the operation, had a congenital heart disease-related operation, or died within 90 days of the operation were excluded. Mixed-effects multivariable logistic regression was used to evaluate thresholds for duration of opioid use after the operation associated with methadone treatment and clinical outcomes associated with methadone use were enumerated., Exposure: Postoperative administration of nonmethadone opioids., Main Outcomes and Measures: Methadone use and postoperative length of stay, ventilator days, and total parenteral nutrition (TPN) days., Results: Of the 2037 infants with surgically treated NEC identified, the median birth weight was 920 (IQR, 700.0-1479.5) g; 1204 were male (59.1%), 911 were White (44.7%), and 343 were Hispanic (16.8%). Infants received nonmethadone opioids for a median of 15 (IQR, 6-30) days after the operation and 231 received methadone (11.3%). The median first day of methadone use was postoperative day 18 (IQR, days 9-64) and continued for 28 days (IQR, 14-73). Compared with infants who received nonmethadone opioids for 1 to 5 days, infants receiving 16 to 21 days of opioids were most likely to receive methadone treatment (odds ratio, 11.45; 95% CI, 6.31-20.77). Methadone use was associated with 21.41 (95% CI, 10.81-32.02) more days of postoperative length of stay, 10.80 (95% CI, 3.63-17.98) more ventilator days, and 16.21 (95% CI, 6.34-26.10) more TPN days., Conclusions and Relevance: In this cohort study of infants with surgically treated NEC, prolonged use of nonmethadone opioids after the operation was associated with an increased likelihood of methadone treatment and increased postoperative length of stay, ventilation, and TPN use. Optimizing postoperative pain management for infants requiring an operation may decrease the need for methadone treatment and improve health care use.
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- 2023
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17. Beyond intergovernmental cooperation: domestic politics of transboundary air pollution in Korea and Singapore.
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Song AY
- Abstract
This study explores why the implementation of domestic environmental policies that tackle transboundary air pollution has been undermined by comparing the cases of the Republic of Korea (Korea) and Singapore. Heavy smog recurs in Korea and Singapore every year despite various attempts to reduce air pollution through the signing of environmental cooperation agreements and the introduction of domestic measures. While existing scholarship has examined intergovernmental cooperation aimed at mitigating transboundary air pollution, this study focuses on domestic factors affecting policy implementation processes at the national level. How do domestic factors shape governmental policy actions within environmental cooperation agreements in the cases of Korea and Singapore? I employed a process-tracing method to analyze the entanglement of domestic stakeholders from the late 1990s to 2019. By drawing upon domestic politics theory, I find that domestic dynamics, intricately linked to other stakeholders, have limited the effectiveness of policies implemented to address poor air quality. This finding suggests that domestic politics play a critical role in establishing effective regional environmental cooperation in the long run., Competing Interests: Conflict of interestThe author has no conflict of interest to declare., (© The Author(s), under exclusive licence to Springer Nature B.V. 2023, Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.)
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- 2023
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18. Sociodemographic characteristics and healthcare utilization of infants with SARS-CoV-2 in the U.S.
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Yieh L, Song AY, Gong CL, Shah K, Li Y, and Lakshmanan A
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- Infant, Humans, Patient Acceptance of Health Care, SARS-CoV-2, COVID-19
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- 2023
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19. Analysis of Significant Genes and Pathways in Esophageal Cancer Based on Gene Expression Omnibus Database.
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Song AY, Mu L, Dai XY, Wang LJ, and Huang LQ
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- Humans, Epithelial Cell Adhesion Molecule genetics, Epithelial Cell Adhesion Molecule metabolism, Gene Expression Profiling methods, Gene Regulatory Networks, Gene Expression, Gene Expression Regulation, Neoplastic, Intracellular Signaling Peptides and Proteins, Esophageal Neoplasms genetics, Esophageal Neoplasms metabolism, Esophageal Squamous Cell Carcinoma genetics, Esophageal Squamous Cell Carcinoma metabolism
- Abstract
Objective To screen antigen targets for immunotherapy by analyzing over-expressed genes, and to identify significant pathways and molecular mechanisms in esophageal cancer by using bioinformatic methods such as enrichment analysis, protein-protein interaction (PPI) network, and survival analysis based on the Gene Expression Omnibus (GEO) database.Methods By screening with highly expressed genes, we mainly analyzed proteins MUC13 and EPCAM with transmembrane domain and antigen epitope from TMHMM and IEDB websites. Significant genes and pathways associated with the pathogenesis of esophageal cancer were identified using enrichment analysis, PPI network, and survival analysis. Several software and platforms including Prism 8, R language, Cytoscape, DAVID, STRING, and GEPIA platform were used in the search and/or figure creation.Results Genes MUC13 and EPCAM were over-expressed with several antigen epitopes in esophageal squamous cell carcinoma (ESCC) tissue. Enrichment analysis revealed that the process of keratinization was focused and a series of genes were related with the development of esophageal cancer. Four genes including ALDH3A1, C2, SLC6A1, and ZBTB7C were screened with significant P value of survival curve.Conclusions Genes MUC13 and EPCAM may be promising antigen targets or biomarkers for esophageal cancer. Keratinization may greatly impact the pathogenesis of esophageal cancer. Genes ALDH3A1, C2, SLC6A1, and ZBTB7C may play important roles in the development of esophageal cancer.
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- 2023
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20. Plasmonic Sensors beyond the Phase Matching Condition: A Simplified Approach.
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Tuniz A, Song AY, Della Valle G, and de Sterke CM
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The conventional approach to optimising plasmonic sensors is typically based entirely on ensuring phase matching between the excitation wave and the surface plasmon supported by the metallic structure. However, this leads to suboptimal performance, even in the simplest sensor configuration based on the Otto geometry. We present a simplified coupled mode theory approach for evaluating and optimizing the sensing properties of plasmonic waveguide refractive index sensors. It only requires the calculation of propagation constants, without the need for calculating mode overlap integrals. We apply our method by evaluating the wavelength-, device length- and refractive index-dependent transmission spectra for an example silicon-on-insulator-based sensor of finite length. This reveals all salient spectral features which are consistent with full-field finite element calculations. This work provides a rapid and convenient framework for designing dielectric-plasmonic sensor prototypes-its applicability to the case of fibre plasmonic sensors is also discussed.
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- 2022
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21. Associations between accelerated parental biologic age, autism spectrum disorder, social traits, and developmental and cognitive outcomes in their children.
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Song AY, Bakulski K, Feinberg JI, Newschaffer C, Croen LA, Hertz-Picciotto I, Schmidt RJ, Farzadegan H, Lyall K, Fallin MD, Volk HE, and Ladd-Acosta C
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- Child, Male, Pregnancy, Female, Humans, Prospective Studies, Parents, Cognition, Epigenesis, Genetic, Autism Spectrum Disorder epidemiology, Autism Spectrum Disorder genetics, Biological Products
- Abstract
Parental age is a known risk factor for autism spectrum disorder (ASD), however, studies to identify the biologic changes underpinning this association are limited. In recent years, "epigenetic clock" algorithms have been developed to estimate biologic age and to evaluate how the epigenetic aging impacts health and disease. In this study, we examined the relationship between parental epigenetic aging and their child's prospective risk of ASD and autism related quantitative traits in the Early Autism Risk Longitudinal Investigation study. Estimates of epigenetic age were computed using three robust clock algorithms and DNA methylation measures from the Infinium HumanMethylation450k platform for maternal blood and paternal blood specimens collected during pregnancy. Epigenetic age acceleration was defined as the residual of regressing chronological age on epigenetic age while accounting for cell type proportions. Multinomial logistic regression and linear regression models were completed adjusting for potential confounders for both maternal epigenetic age acceleration (n = 163) and paternal epigenetic age acceleration (n = 80). We found accelerated epigenetic aging in mothers estimated by Hannum's clock was significantly associated with lower cognitive ability and function in offspring at 12 months, as measured by Mullen Scales of Early Learning scores (β = -1.66, 95% CI: -3.28, -0.04 for a one-unit increase). We also observed a marginal association between accelerated maternal epigenetic aging by Horvath's clock and increased odds of ASD in offspring at 36 months of age (aOR = 1.12, 95% CI: 0.99, 1.26). By contrast, fathers accelerated aging was marginally associated with decreased ASD risk in their offspring (aOR = 0.83, 95% CI: 0.68, 1.01). Our findings suggest epigenetic aging could play a role in parental age risks on child brain development., (© 2022 International Society for Autism Research and Wiley Periodicals LLC.)
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- 2022
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22. Correction for Bimler et al., "Matrix Protein 2 Extracellular Domain-Specific Monoclonal Antibodies Are an Effective and Potentially Universal Treatment for Influenza A".
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Bimler L, Ronzulli SL, Song AY, Johnson SK, Jones CA, Kim T, Le DT, Tompkins SM, and Paust S
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- 2022
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23. Characterization of Puncture Forces of the Human Trachea and Cricothyroid Membrane.
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DeSchmidt AM, Gong AT, Batista JE, Song AY, Bidinger SL, Schul AL, Wang EY, Norfleet JE, and Sweet RM
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- Cricoid Cartilage surgery, Humans, Neck, Punctures, Trachea, Tracheotomy
- Abstract
Accurate human tissue biomechanical data represents a critical knowledge gap that will help facilitate the advancement of new medical devices, patient-specific predictive models, and training simulators. Tissues related to the human airway are a top priority, as airway medical procedures are common and critical. Placement of a surgical airway, though less common, is often done in an emergent (cricothyrotomy) or urgent (tracheotomy) fashion. This study is the first to report relevant puncture force data for the human cricothyroid membrane and tracheal annular ligaments. Puncture forces of the cricothyroid membrane and tracheal annular ligaments were collected from 39 and 42 excised human donor tracheas, respectively, with a mechanized load frame holding various surgical tools. The average puncture force of the cricothyroid membrane using an 11 blade scalpel was 1.01 ± 0.36 N, and the average puncture force of the tracheal annular ligaments using a 16 gauge needle was 0.98 ± 0.34 N. This data can be used to inform medical device and airway training simulator development as puncture data of these anatomies has not been previously reported., (Copyright © 2022 by ASME; reuse license CC-BY 4.0.)
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- 2022
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24. Prenatal Exposure to Ambient Air Pollution and Epigenetic Aging at Birth in Newborns.
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Song AY, Feinberg JI, Bakulski KM, Croen LA, Fallin MD, Newschaffer CJ, Hertz-Picciotto I, Schmidt RJ, Ladd-Acosta C, and Volk HE
- Abstract
In utero air pollution exposure has been associated with adverse birth outcomes, yet effects of air pollutants on regulatory mechanisms in fetal growth and critical windows of vulnerability during pregnancy are not well understood. There is evidence that epigenetic alterations may contribute to these effects. DNA methylation (DNAm) based age estimators have been developed and studied extensively with health outcomes in recent years. Growing literature suggests environmental factors, such as air pollution and smoking, can influence epigenetic aging. However, little is known about the effect of prenatal air pollution exposure on epigenetic aging. In this study, we leveraged existing data on prenatal air pollution exposure and cord blood DNAm from 332 mother-child pairs in the Early Autism Risk Longitudinal Investigation (EARLI) and Markers of Autism Risk in Babies-Learning Early Signs (MARBLES), two pregnancy cohorts enrolling women who had a previous child diagnosed with autism spectrum disorder, to assess the relationship of prenatal exposure to air pollution and epigenetic aging at birth. DNAm age was computed using existing epigenetic clock algorithms for cord blood tissue-Knight and Bohlin. Epigenetic age acceleration was defined as the residual of regressing chronological gestational age on DNAm age, accounting for cell type proportions. Multivariable linear regression models and distributed lag models (DLMs), adjusting for child sex, maternal race/ethnicity, study sites, year of birth, maternal education, were completed. In the single-pollutant analysis, we observed exposure to PM
2.5, PM10, and O3 during preconception period and pregnancy period were associated with decelerated epigenetic aging at birth. For example, pregnancy average PM10 exposure (per 10 unit increase) was associated with epigenetic age deceleration at birth (weeks) for both Knight and Bohlin clocks ( β = -0.62, 95% CI: -1.17, -0.06; β = -0.32, 95% CI: -0.63, -0.01, respectively). Weekly DLMs revealed that increasing PM2.5 during the first trimester and second trimester were associated with decelerated epigenetic aging and that increasing PM10 during the preconception period was associated with decelerated epigenetic aging, using the Bohlin clock estimate. Prenatal ambient air pollution exposure, particularly in early and mid-pregnancy, was associated with decelerated epigenetic aging at birth., 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 © 2022 Song, Feinberg, Bakulski, Croen, Fallin, Newschaffer, Hertz-Picciotto, Schmidt, Ladd-Acosta and Volk.)- Published
- 2022
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25. Characterization of Chemisorbed Species and Active Adsorption Sites in Mg-Al Mixed Metal Oxides for High-Temperature CO 2 Capture.
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Lund A, Manohara GV, Song AY, Jablonka KM, Ireland CP, Cheah LA, Smit B, Garcia S, and Reimer JA
- Abstract
Mg-Al mixed metal oxides (MMOs), derived from the decomposition of layered double hydroxides (LDHs), have been purposed as adsorbents for CO
2 capture of industrial plant emissions. To aid in the design and optimization of these materials for CO2 capture at 200 °C, we have used a combination of solid-state nuclear magnetic resonance (ssNMR) and density functional theory (DFT) to characterize the CO2 gas sorption products and determine the various sorption sites in Mg-Al MMOs. A comparison of the DFT cluster calculations with the observed13 C chemical shifts of the chemisorbed products indicates that mono- and bidentate carbonates are formed at the Mg-O sites with adjacent Al substitution of an Mg atom, while the bicarbonates are formed at Mg-OH sites without adjacent Al substitution. Quantitative13 C NMR shows an increase in the relative amount of strongly basic sites, where the monodentate carbonate product is formed, with increasing Al/Mg molar ratios in the MMOs. This detailed understanding of the various basic Mg-O sites presented in MMOs and the formation of the carbonate, bidentate carbonate, and bicarbonate chemisorbed species yields new insights into the mechanism of CO2 adsorption at 200 °C, which can further aid in the design and capture capacity optimization of the materials., Competing Interests: The authors declare no competing financial interest., (© 2022 The Authors. Published by American Chemical Society.)- Published
- 2022
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26. Prenatal exposure to pesticide residues in the diet in association with child autism-related traits: Results from the EARLI study.
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Joyce EE, Chavarro JE, Rando J, Song AY, Croen LA, Fallin MD, Hertz-Picciotto I, Schmidt RJ, Volk H, Newschaffer CJ, and Lyall K
- Subjects
- Child, Child, Preschool, Diet, Female, Humans, Mothers, Pregnancy, Autism Spectrum Disorder, Autistic Disorder, Pesticide Residues, Pesticides adverse effects, Prenatal Exposure Delayed Effects
- Abstract
Prior work has suggested associations between prenatal exposure to several classes of pesticides and child autism spectrum disorder (ASD). We examined a previously developed pesticide residue burden score (PRBS) and intake of high pesticide residue foods in association with ASD-related traits. Participants were drawn from the Early Autism Risk Longitudinal Investigation (EARLI) (n = 256), a cohort following mothers who previously had a child with ASD through a subsequent pregnancy and that child's development. ASD-related traits were captured according to total Social Responsiveness Scale (SRS) scores at age 3 (mean raw total SRS score = 35.8). Dietary intake was assessed through a food frequency questionnaire collected during pregnancy. We also incorporated organic intake and fatty foods in modified versions of the PRBS. Associations between high-residue fruit and vegetable intake, the overall PRBS and modified versions of it, and SRS scores were assessed using multivariable linear regression. Overall, we did not observe associations between pesticide residues in foods and ASD-related outcomes, and modified versions of the PRBS yielded similar findings. However, reductions in ASD-related traits were observed with higher overall fruit and vegetable intake (adjusted estimates for Q4 vs. Q1: β -12.76, 95%CI -27.8, 2.3). Thus, findings from this high familial probability cohort did not suggest relationships between pesticide residues in the diet according to the PRBS and ASD-related traits. Beneficial effects of fruit and vegetable intake may influence these relationships. Future work should consider fruit and vegetable intake in association with ASD-related outcomes. LAY SUMMARY: Diet is the main source of exposure to most pesticides in use today. In this study, we examined the relationship between pesticide exposure from residues in the diet during pregnancy and child autism-related traits. We found that these pesticide residues from the diet were not related to child autism-related outcomes at age three. However, higher prenatal fruit and vegetable intake was associated with reductions in child autism-related traits., (© 2022 The Authors. Autism Research published by International Society for Autism Research and Wiley Periodicals LLC.)
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- 2022
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27. Synthesis of Mg Alkoxide Nanowires from Mg Alkoxide Nanoparticles upon Ligand Exchange.
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Luo S, Turcheniuk K, Chen L, Song AY, Hu W, Ren X, Sun Z, Ramprasad R, and Yushin G
- Abstract
We report on a new synthesis pathway for Mg n -propoxide nanowires (NWs) from Mg ethoxide nanoparticles using a simple alkoxy ligand exchange reaction followed by condensation polymerization in n -propanol. In order to uncover the morphology-structure correlation in the metal alkoxide family, we employed a powerful range of state-of-the-art characterization techniques. The morphology transformation from nanoparticles to nanowires was demonstrated by time-lapse SEM micrographs. Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance spectroscopy (such as
1 H NMR and solid-state13 C cross-polarization (CP)-MAS NMR) illustrated the replacement of ethyl by n -propyl and metal alkoxide condensation polymerization. We identified chemical formulas of the products also using NMR spectroscopy. The crystal structure simulation of Mg ethoxide particles and Mg n -propoxide NWs provided insights on how the ligand exchange and the associated increase in the fraction of OH groups greatly enhanced Mg alkoxide bonding and enabled a higher degree of coordination polymerization to facilitate the formation and growth of the Mg n -propoxide NWs. The discovered synthesis method could be extended for the fabrication of other metal alkoxide (nano) structures with various morphologies.- Published
- 2022
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28. The financial burden experienced by families of preterm infants after NICU discharge.
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Lakshmanan A, Song AY, Belfort MB, Yieh L, Dukhovny D, Friedlich PS, and Gong CL
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- Cross-Sectional Studies, Financial Stress, Humans, Infant, Infant, Newborn, Patient Discharge, Infant, Premature, Intensive Care Units, Neonatal
- Abstract
Background and Objectives: Describe the financial burden and worry that families of preterm infants experience after discharge from the neonatal intensive care unit (NICU)., Methods: We surveyed 365 parents of preterm infants in a cross-sectional study regarding socio-demographics, supplemental security income (SSI), and financial worry. We completed a multivariable logistic regression model to examine the adjusted association of financial worry with modifiable factors., Results: We found that 53% of participants worried about healthcare costs after NICU discharge. After adjusting for socio-demographic and infant characteristics, we identified that, aOR (95% CI), out-of-pocket costs from the NICU index hospitalization, 3.51 (1.7, 7.26) and durable medical equipment use, 2.41 (1.11, 5.23) was associated with increased financial worry while enrollment in SSI, 0.38 (0.19, 0.76) was associated with decreased financial worry., Conclusions: We identified factors that could contribute to financial burden after NICU discharge that may advise future work to target financial support systems., (© 2021. The Author(s), under exclusive licence to Springer Nature America, Inc.)
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- 2022
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29. Changes in sun protection behaviours, sun exposure and shade availability among adults, children and adolescents in New South Wales, 2003-2016.
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Liew AY and Cust AE
- Subjects
- Adolescent, Adult, Child, Cross-Sectional Studies, Female, Health Behavior, Humans, New South Wales, Protective Clothing, Sunlight adverse effects, Sunscreening Agents therapeutic use, Surveys and Questionnaires, Ultraviolet Rays adverse effects, Skin Neoplasms prevention & control, Sunburn prevention & control
- Abstract
Objective: To inform skin cancer prevention policies and campaigns, we investigated changes over time in sun protection behaviours, sunburn, sun exposure and shade availability in public spaces among people living in New South Wales (NSW), Australia, between 2003 and 2016., Methods: We analysed cross-sectional data from the NSW Population Health Survey collected in 2003, 2007, 2014 and 2016, which included approximately 15,000 respondents of all ages in each year. Logistic regression models were used to analyse overall changes over time and for different age, sex and sociodemographic groups., Results: The use of sunscreen and protective clothing and the availability of shade increased between 2003 and 2016, but sunburn and sun exposure during peak times of ultraviolet radiation also increased. In subgroup analyses, there was no improvement in sun protection behaviours among adolescents and increases in sunburn and sun exposure were observed only among adults, particularly women and in areas with less social disadvantage., Conclusions: Sun protection behaviours have improved over time among some population subgroups, but over-exposure to ultraviolet radiation remains prevalent. Implications for public health: Skin cancer prevention initiatives that specifically target adolescents and sun exposure during peak times are needed to help reduce population skin cancer risk., (© 2021 The Authors.)
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- 2021
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30. Bispecific Antibody Designed for Targeted NK Cell Activation and Functional Assessment for Biomedical Applications.
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Song AY, Kim H, Kim JM, Hwang SH, Ko DH, and Kim HS
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- HEK293 Cells, Humans, Interferon-gamma metabolism, Killer Cells, Natural immunology, Lymphoproliferative Disorders diagnosis, Lymphoproliferative Disorders immunology, Multiple Myeloma diagnosis, Multiple Myeloma immunology, Proof of Concept Study, Single-Chain Antibodies immunology, Antibodies, Bispecific immunology, Killer Cells, Natural metabolism, Lymphocyte Activation immunology, NK Cell Lectin-Like Receptor Subfamily K immunology, Signaling Lymphocytic Activation Molecule Family immunology
- Abstract
Natural killer (NK) cells serve as key innate effectors and their activity has been considered a prognostic biomarker in diverse human diseases. Currently, NK cell functional assays have several problems primarily related to adequate preparation, labeling, or treatment of target cells, which are cumbersome and often hamper consistent sensitivity for NK cells. Here, bispecific antibodies (BsAb's) targeting NKG2D and 2B4 receptors, whose combination mounts selective cytotoxicity and IFN-γ production of NK cells, are developed as acellular, consistent, and easy-to-use strategies for assessing NK cell functions. These NK cell activator BsAb's (NKABs) are constructed in symmetric dual bivalent formats with different interdomain spacings [immunoglobulin G (IgG)-single-chain variable fragment (scFv) and dual-variable domain (DVD)-Ig] and kappa constant (Cκ)-scFv format linking two scFv's with a Cκ domain. These NKABs are specific and superior to a combination of monospecific antibodies for NK cell activation. NKAB elicits both direct cytotoxicity and IFN-γ production via integration of NKG2D and 2B4 signals. Moreover, stimulation with NKAB IgG-scFv and Cκ-scFv reveals defective NK cell functions in X-linked lymphoproliferative disease involving 2B4 dysfunction in NK cells and multiple myeloma in peripheral blood mononuclear cells and whole blood, respectively. Hence, this work provides a proof of concept that NKAB facilitates the reliable and comprehensive measurement of NK cell function in clinical settings for diagnostic and prognostic purposes.
- Published
- 2021
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31. Electrolyte melt infiltration for scalable manufacturing of inorganic all-solid-state lithium-ion batteries.
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Xiao Y, Turcheniuk K, Narla A, Song AY, Ren X, Magasinski A, Jain A, Huang S, Lee H, and Yushin G
- Abstract
All-solid-state lithium (Li) metal and lithium-ion batteries (ASSLBs) with inorganic solid-state electrolytes offer improved safety for electric vehicles and other applications. However, current inorganic ASSLB manufacturing technology suffers from high cost, excessive amounts of solid-state electrolyte and conductive additives, and low attainable volumetric energy density. Such a fabrication method involves separate fabrications of sintered ceramic solid-state electrolyte membranes and ASSLB electrodes, which are then carefully stacked and sintered together in a precisely controlled environment. Here we report a disruptive manufacturing technology that offers reduced manufacturing costs and improved volumetric energy density in all solid cells. Our approach mimics the low-cost fabrication of commercial Li-ion cells with liquid electrolytes, except that we utilize solid-state electrolytes with low melting points that are infiltrated into dense, thermally stable electrodes at moderately elevated temperatures (~300 °C or below) in a liquid state, and which then solidify during cooling. Nearly the same commercial equipment could be used for electrode and cell manufacturing, which substantially reduces a barrier for industry adoption. This energy-efficient method was used to fabricate inorganic ASSLBs with LiNi
0.33 Mn0.33 Co0.33 O2 cathodes and both Li4 Ti5 O12 and graphite anodes. The promising performance characteristics of such cells open new opportunities for the accelerated adoption of ASSLBs for safer electric transportation.- Published
- 2021
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32. Psychological Distress Among the U.S. General Population During the COVID-19 Pandemic.
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Guerrini CJ, Schneider SC, Guzick AG, Amos Nwankwo GN, Canfield I, Fedson S, Gutierrez AM, Sheu JC, Song AY, Villagran AM, McGuire AL, and Storch EA
- Abstract
The COVID-19 pandemic is taking a significant global toll on emotional well-being, but evidence of mental health impacts in the United States remains limited. In April 2020, we conducted an exploratory survey of U.S. residents to understand prevalence of and factors associated with psychological distress during the pandemic. Data collection was conducted using Qualtrics, an online survey platform, and U.S. adult respondents were recruited via Amazon's Mechanical Turk platform. Among 1,366 respondents, 42% ( n = 571) reported clinically significant anxiety and 38% ( n = 519) reported clinically significant depression. Factors associated with anxiety and depressive symptoms included Hispanic/Latino ethnicity; younger age; lower income; employment as or living with a health care worker-first responder; caregiver status; SARS-CoV-2 infection status; decreased frequency of engagement in healthy behaviors; and changed frequency of engagement in unhealthy behaviors. That some of these factors are associated with elevated distress during the pandemic is not yet widely appreciated and might be useful in informing management of mental health care resources., Competing Interests: CG has received grant funding from NIH. SS has received grant funding from the NIH, Texas Higher Education Coordinating Board, Ream Foundation, and the American Red Cross. AM serves as advisor for Danaher Life Sciences, the Greenwall Foundation, Morgridge Institute for Research, and Geisinger. AM receives grant funding from NIH. ES receives book royalties from Elsevier,Wiley, Oxford, APA, Springer, and Lawrence Erlbuam. ES is a consultant for Levo Therapeutics and Biohaven. ES has received grant funding from NIH, Texas Higher Education Coordinating Board, Ream Foundation, ReBuild TX, and Greater Houston Community Foundation. The remaining 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 © 2021 Guerrini, Schneider, Guzick, Amos Nwankwo, Canfield, Fedson, Gutierrez, Sheu, Song, Villagran, McGuire and Storch.)
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- 2021
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33. Multifunctional Microparticles with Stimulation and Sensing Capabilities for Facile NK Cell Activity Assay.
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Park J, Shin Y, Kim JM, Kweon S, Song AY, Baek Y, Kim J, Cho D, Kim HS, and Doh J
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- Cytokines, Flow Cytometry, Interferon-gamma, Immunity, Innate, Killer Cells, Natural
- Abstract
Natural killer (NK) cells are a subset of innate lymphoid cells playing an important role in immune surveillance and early defense against infection and cancer. They recognize and directly kill infected or transformed cells. At the same time, they produce various cytokines and chemokines to regulate other immune cells. NK cell activity can be a useful marker for health screenings because impaired NK cell functions may indicate a more susceptible environment for infection or tumor development. Currently, most NK cell activity assays are focused on measuring either cytokine secretion, in particular, interferon γ (IFN-γ), or cytotoxicity against target cells such as K562, thus only providing partial information on NK cell activity. In order to develop a comprehensive test for measuring NK cell function, cytotoxicity and cytokine secretion ability should be measured simultaneously. In addition, current NK cell assays are performed by stimulating NK cells with cocktails of cytokines, antibody-coated beads, or live target cells. In this study, we developed multifunctional microparticles for NK cell activity assay (MNAs) that allow simultaneous stimulation and sensing various NK cell activities, including cytokine secretion and cytotoxicity. The surfaces of MNAs are decorated with multiple functional biomolecules, including antibodies that stimulate NK cells by engaging NK cell activating receptors, antibodies that can capture cytokines secreted by NK cells, and a peptide sensor that reacts with granzyme B, a key molecule released by NK cells for cytotoxicity. The performances of MNAs are assessed using flow cytometry and live cell imaging. NK cell activity is measured by simply mixing MNAs with NK cells and performing flow cytometry, and the results are comparable to those measured by standard NK cell activity assays.
- Published
- 2021
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34. Water extract of Artemisia scoparia Waldst. & Kitam suppresses LPS-induced cytokine production and NLRP3 inflammasome activation in macrophages and alleviates carrageenan-induced acute inflammation in mice.
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Ahn JH, Park YL, Song AY, Kim WG, Je CY, Jung DH, Kim YJ, Oh J, Cho JY, Kim DJ, and Park JH
- Subjects
- 3T3-L1 Cells, Animals, Anti-Inflammatory Agents isolation & purification, Anti-Inflammatory Agents pharmacology, Cytokines biosynthesis, Dose-Response Relationship, Drug, Female, Humans, Inflammation drug therapy, Inflammation metabolism, Macrophages drug effects, Macrophages metabolism, Mice, Mice, Inbred C57BL, NLR Family, Pyrin Domain-Containing 3 Protein metabolism, Plant Extracts isolation & purification, Plant Extracts pharmacology, Water pharmacology, Anti-Inflammatory Agents therapeutic use, Artemisia, Carrageenan toxicity, Cytokines antagonists & inhibitors, Lipopolysaccharides toxicity, NLR Family, Pyrin Domain-Containing 3 Protein antagonists & inhibitors, Plant Extracts therapeutic use
- Abstract
Ethnopharmacological Relevance: Artemisia scoparia Waldst. & Kitam (A. scoparia) is a perennial herbal plant that is widely used as a folk remedy in Asian countries. Several studies have demonstrated that A. scoparia has various physiological effects, including anti-inflammation, anti-hypertension, anti-obesity, anti-hepatotoxicity, and anti-oxidant effects., Aim of the Study: The objective of the present study was to examine the anti-inflammatory effects of water extract of A. scoparia (WAS)., Materials and Methods: Murine bone marrow-derived macrophages (BMDMs), human monocyte THP-1 and murine fibroblast 3T3-L1 cells were used for the in vitro experiments. Cell viability and cytokine production were determined by the MTT assay and ELISA, respectively. RT-PCR was performed to determine iNOS gene expression and the Griess reaction was used to measure nitrite levels. iNOS protein expression, activation of NF-κB and MAPKs, and cleavage of caspase-1 and IL-1β were determined by Western blot analysis. A carrageenan-induced mouse model of acute inflammation was used in the in vivo experiments., Results: Pretreatment with WAS concentration-dependently suppressed gene expression and IL-6, TNF-α, CXCL1 and iNOS protein levels in BMDMs stimulated with LPS. In addition, pretreatment with WAS inhibited LPS-induced production of IL-6 and TNF-α in THP-1 cells and CXCL1 in 3T3-L1. Furthermore, LPS induced phosphorylation of p65 in BMDMs, and this induction was dramatically suppressed by WAS pretreatment. We further investigated whether WAS regulates activation of the NLRP3 inflammasome, which is known to be essential for IL-1β processing. WAS inhibited the production of IL-1β, but not IL-6, in response to adenosine triphosphate (ATP) and monosodium uric acid (MSU) crystals in LPS-primed BMDMs. Cleavage of caspase-1 and IL-1β was also reduced by WAS. We finally evaluated the in vivo anti-inflammatory effects of WAS in a mouse model of carrageenan-induced acute inflammation. Subcutaneous administration of WAS reduced production of the inflammatory cytokines IL-6, TNF-α, CXCL1, and IL-1β. Recruitment of immune cells, mostly neutrophils, was also reduced by administration of WAS. Infiltration of inflammatory cells and edema in the submucosa of air pouch tissues were markedly improved in the WAS-treated groups., Conclusions: Our results indicate that WAS possesses potent anti-inflammatory properties. These findings suggest that A. scoparia is a candidate functional food targeting several inflammatory diseases., (Copyright © 2020 The Authors. Published by Elsevier B.V. All rights reserved.)
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- 2021
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35. Matrix Protein 2 Extracellular Domain-Specific Monoclonal Antibodies Are an Effective and Potentially Universal Treatment for Influenza A.
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Bimler L, Ronzulli SL, Song AY, Johnson SK, Jones CA, Kim T, Le DT, Tompkins SM, and Paust S
- Abstract
Influenza virus infection causes significant morbidity and mortality worldwide. Humans fail to make a universally protective memory immune response to influenza A. Hemagglutinin and Neuraminidase undergo antigenic drift and shift, resulting in new influenza A strains to which humans are naive. Seasonal vaccines are often ineffective and escape mutants have been reported to all treatments for influenza A. In the absence of a universal influenza A vaccine or treatment, influenza A will remain a significant threat to human health. The extracellular domain of the M2-ion channel (M2e) is an ideal antigenic target for a universal therapeutic agent, as it is highly conserved across influenza A serotypes, has a low mutation rate, and is essential for viral entry and replication. Previous M2e-specific monoclonal antibodies (M2e-MAbs) show protective potential against influenza A, however, they are either strain specific or have limited efficacy. We generated seven murine M2e-MAbs and utilized in vitro and in vivo assays to validate the specificity of our novel M2e-MAbs and to explore the universality of their protective potential. Our data shows our M2e-MAbs bind to M2e peptide, HEK cells expressing the M2 channel, as well as, influenza virions and MDCK-ATL cells infected with influenza viruses of multiple serotypes. Our antibodies significantly protect highly influenza A virus susceptible BALB/c mice from lethal challenge with H1N1 A/PR/8/34, pH1N1 A/CA/07/2009, H5N1 A/Vietnam/1203/2004, and H7N9 A/Anhui/1/2013 by improving survival rates and weight loss. Based on these results, at least four of our seven M2e-MAbs show strong potential as universal influenza A treatments. IMPORTANCE Despite a seasonal vaccine and multiple therapeutic treatments, Influenza A remains a significant threat to human health. The biggest obstacle is producing a vaccine or treatment for influenza A is their universality or efficacy against not only seasonal variances in the influenza virus, but also against all human, avian, and swine serotypes and, therefore, potential pandemic strains. M2e has huge potential as a target for a vaccine or treatment against influenza A. It is the most conserved external protein on the virus. Antibodies against M2e have made it to clinical trials, but not succeeded. Here, we describe novel M2e antibodies produced in mice that are not only protective at low doses, but that we extensively test to determine their universality and found to be cross protective against all strains tested. Additionally, our work begins to elucidate the critical role of isotype for an influenza A monoclonal antibody therapeutic., (Copyright © 2020 American Society for Microbiology.)
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- 2021
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36. Potential Function of MMP3 Gene in Degradation of Extracellular Matrix Complex in Colorectal Carcinoma.
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Dai XY, Song AY, Mu L, Wang LJ, and Huang LQ
- Subjects
- Colorectal Neoplasms mortality, Gene Expression Regulation, Neoplastic, Humans, Survival Analysis, Tissue Inhibitor of Metalloproteinase-1 genetics, Transcriptome, Colorectal Neoplasms genetics, Extracellular Matrix, Matrix Metalloproteinase 3 genetics
- Published
- 2021
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37. The association of care transitions measure-15 score and outcomes after discharge from the NICU.
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Yeh AM, Song AY, Vanderbilt DL, Gong C, Friedlich PS, Williams R, and Lakshmanan A
- Subjects
- Cross-Sectional Studies, Humans, Infant, Infant, Newborn, Infant, Premature, Patient Transfer, Quality of Life, Intensive Care Units, Neonatal, Patient Discharge
- Abstract
Background: Our objectives were (1) to describe Care Transitions Measure (CTM) scores among caregivers of preterm infants after discharge from the neonatal intensive care unit (NICU) and (2) to describe the association of CTM scores with readmissions, enrollment in public assistance programs, and caregiver quality of life scores., Methods: The study design was a cross-sectional study. We estimated adjusted associations between CTM scores (validated measure of transition) with outcomes using unconditional logistic and linear regression models and completed an E-value analysis on readmissions to quantify the minimum amount of unmeasured confounding., Results: One hundred sixty-nine parents answered the questionnaire (85% response rate). The majority of our sample was Hispanic (72.5%), non-English speaking (67.1%) and reported an annual income of <$20,000 (58%). Nearly 28% of the infants discharged from the NICU were readmitted within a year from discharge. After adjusting for confounders, we identified that a positive 10-point change of CTM score was associated with an odds ratio (95% CI) of 0.74 (0.58, 0.98) for readmission (p = 0.01), 1.02 (1, 1.05) for enrollment in early intervention, 1.03 (1, 1.05) for enrollment in food assistance programs, and a unit change (95% CI) 0.41 (0.27, 0.56) in the Multicultural Quality of Life Index score (p < 0.0001). The associated E-value for readmissions was 1.6 (CI 1.1) suggesting moderate confounding., Conclusion: The CTM may be a useful screening tool to predict certain outcomes for infants and their families after NICU discharge. However, further work must be done to identify unobserved confounding factors such as parenting confidence, problem-solving and patient activation.
- Published
- 2021
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38. Diagnosis of Early Esophageal Cancer Based on TCM Tongue Inspection.
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Song AY, Lou YN, Yang QX, Li DF, Song GH, Huang LQ, Yuan KH, and Jia LQ
- Subjects
- Electronic Nose, Humans, Esophageal Neoplasms diagnosis, Medicine, Chinese Traditional, Tongue
- Published
- 2020
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39. PT-Symmetric Topological Edge-Gain Effect.
- Author
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Song AY, Sun XQ, Dutt A, Minkov M, Wojcik C, Wang H, Williamson IAD, Orenstein M, and Fan S
- Abstract
We demonstrate a non-Hermitian topological effect that is characterized by having complex eigenvalues only in the edge states of a topological material, despite the fact that the material is completely uniform. Such an effect can be constructed in any topological structure formed by two gapped subsystems, e.g., a quantum spin-Hall system, with a suitable non-Hermitian coupling between the spins. The resulting complex-eigenvalued edge state is robust against defects due to the topological protection. In photonics, such an effect can be used for the implementation of topological lasers, in which a uniform pumping provides gain only in the edge lasing state. Furthermore, such a topological lasing model is reciprocal and is thus compatible with standard photonic platforms.
- Published
- 2020
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40. Impact of Confounding on Cost, Survival, and Length-of-Stay Outcomes for Neonates with Hypoplastic Left Heart Syndrome Undergoing Stage 1 Palliation Surgery.
- Author
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Gong CL, Song AY, Horak R, Friedlich PS, Lakshmanan A, Pruetz JD, Yieh L, Ram Kumar S, and Williams RG
- Subjects
- Databases, Factual, Extracorporeal Membrane Oxygenation economics, Extracorporeal Membrane Oxygenation mortality, Female, Humans, Hypoplastic Left Heart Syndrome economics, Hypoplastic Left Heart Syndrome surgery, Infant, Newborn, Male, Norwood Procedures economics, Palliative Care economics, Palliative Care statistics & numerical data, Quality Improvement, Retrospective Studies, United States epidemiology, Hospital Costs statistics & numerical data, Hypoplastic Left Heart Syndrome mortality, Length of Stay statistics & numerical data, Norwood Procedures mortality
- Abstract
The objective of this analysis was to update trends in LOS and costs by survivorship and ECMO use among neonates with hypoplastic left heart syndrome (HLHS) undergoing stage 1 palliation surgery using 2016 data from the Healthcare Cost and Utilization Project Kids' Inpatient Database. We identified neonates ≤ 28 days old with HLHS undergoing Stage 1 surgery, defined as a Norwood procedure with modified Blalock-Taussig (BT) shunt, Sano modification, or both. Multivariable regression with year random effects was used to compare LOS and costs by hospital region, case volume, survivorship, and ECMO vs. no ECMO. An E-value analysis, an approach for conducting sensitivity analysis for unmeasured confounding, was performed to determine if unmeasured confounding contributed to the observed effects. Significant differences in total costs, LOS, and mortality were noted by hospital region, ECMO use, and sub-analyses of case volume. However, other than ECMO use and mortality, the maximum E-value confidence interval bound was 1.71, suggesting that these differences would disappear with an unmeasured confounder 1.71 times more associated with both the outcome and exposure (e.g., socioeconomic factors, environment, etc.) Our findings confirm previous literature demonstrating significant resource utilization among Norwood patients, particularly those undergoing ECMO use. Based on our E-value analysis, differences by hospital region and case volume can be explained by moderate unobserved confounding, rather than a reflection of the quality of care provided. Future analyses on surgical quality must account for unobserved factors to provide meaningful information for quality improvement.
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- 2020
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41. Kokumi Taste Active Peptides Modulate Salt and Umami Taste.
- Author
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Rhyu MR, Song AY, Kim EY, Son HJ, Kim Y, Mummalaneni S, Qian J, Grider JR, and Lyall V
- Subjects
- Animals, Electrophysiological Phenomena, Humans, Mice, Models, Animal, Rats, Sodium Chloride, Dietary, Taste drug effects, Taste Perception drug effects, Fishes physiology, Sodium metabolism, Taste physiology, Taste Buds metabolism
- Abstract
Kokumi taste substances exemplified by γ-glutamyl peptides and Maillard Peptides modulate salt and umami tastes. However, the underlying mechanism for their action has not been delineated. Here, we investigated the effects of a kokumi taste active and inactive peptide fraction (500-10,000 Da) isolated from mature (FII
m ) and immature (FIIim ) Ganjang, a typical Korean soy sauce, on salt and umami taste responses in humans and rodents. Only FIIm (0.1-1.0%) produced a biphasic effect in rat chorda tympani (CT) taste nerve responses to lingual stimulation with 100 mM NaCl + 5 μM benzamil, a specific epithelial Na+ channel blocker. Both elevated temperature (42 °C) and FIIm produced synergistic effects on the NaCl + benzamil CT response. At 0.5% FIIm produced the maximum increase in rat CT response to NaCl + benzamil, and enhanced salt taste intensity in human subjects. At 2.5% FIIm enhanced rat CT response to glutamate that was equivalent to the enhancement observed with 1 mM IMP. In human subjects, 0.3% FIIm produced enhancement of umami taste. These results suggest that FIIm modulates amiloride-insensitive salt taste and umami taste at different concentration ranges in rats and humans.- Published
- 2020
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42. Conversion of Mg-Li Bimetallic Alloys to Magnesium Alkoxide and Magnesium Oxide Ceramic Nanowires.
- Author
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Luo S, Turcheniuk K, Song AY, Narla A, Kim D, Magasinsky A, and Yushin G
- Abstract
Technologically important composites with enhanced thermal and mechanical properties rely on the reinforcement by the high specific strength ceramic nanofibers or nanowires (NWs) with high aspect ratios. However, conventional synthesis routes to produce such ceramic NWs have prohibitively high cost. Now, direct transformation of bulk Mg-Li alloys into Mg alkoxide NWs is demonstrated without the use of catalysts, templates, expensive or toxic chemicals, or any external stimuli. This mechanism proceeds through the minimization of strain energy at the boundary of phase transformation front leading to the formation of ultra-long NWs with tunable dimensions. Such alkoxide NWs can be easily converted in air into ceramic MgO NWs with similar dimensions. The impact of the alloy grain size and Li content, synthesis temperature, inductive and steric effects of alkoxide groups on the diameter, length, composition, ductility, and oxidation of the produced NWs is discussed., (© 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)
- Published
- 2020
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43. Association of WIC Participation and Growth and Developmental Outcomes in High-Risk Infants.
- Author
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Lakshmanan A, Song AY, Flores-Fenlon N, Parti U, Vanderbilt DL, Friedlich PS, Williams R, and Kipke M
- Subjects
- Anthropometry, Cross-Sectional Studies, Female, Humans, Infant, Los Angeles, Male, Surveys and Questionnaires, Vulnerable Populations, Child Development, Food Assistance
- Abstract
The objective of this study was to describe the association of enrollment in the Special Supplemental Nutrition Program for Women, Infants and Children (WIC), the Supplemental Nutrition Assistance Program (SNAP), and infant growth and neurodevelopmental outcomes. Z scores and Bayley Scales of Infant and Toddler Development-Third Edition (Bayley-III) and Vineland Adaptive/Behavior Scale-II (VABS-II) scores represented primary outcomes. We conducted bivariate analyses and linear regression. Children who were enrolled in WIC or WIC/SNAP had weight z scores U (95% confidence interval [CI]) that were 1.32 (0.42-2.21) or 1.19 (0.16-2.23) units higher. Enrollment in WIC or WIC/SNAP was associated with a higher score (95% CI) of 11.7 U (1.2-22.2 U) or 11.5 (0.1-22.9) for Bayley-III cognitive score and 10.1 U (1.9-19.1 U) or 10.3 (0.9-19.7) for the VABS-II composite score. These findings support increased advocacy for participation in WIC or WIC/SNAP for families with high-risk infants.
- Published
- 2020
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- View/download PDF
44. The association of Trisomy 13 and 18 and hospital discharge outcomes among neonates in California: A retrospective cohort study.
- Author
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Haghnazarian E, Hu J, Song AY, Friedlich PS, and Lakshmanan A
- Subjects
- California, Facilities and Services Utilization economics, Female, Hospital Mortality, Humans, Infant, Newborn, Length of Stay statistics & numerical data, Male, Respiration, Artificial economics, Retrospective Studies, Treatment Outcome, Trisomy 13 Syndrome mortality, Trisomy 13 Syndrome therapy, Trisomy 18 Syndrome mortality, Trisomy 18 Syndrome therapy, Hospital Charges, Length of Stay economics, Trisomy 13 Syndrome economics, Trisomy 18 Syndrome economics
- Abstract
Background: Despite Trisomy 13 and 18 being among the most fatal congenital anomalies, limited information exists about resource utilization and factors associated with length of stay (LOS) and total hospital charges (THC) for these anomalies., Methods: We studied data sets of the patient discharge data set from the California Office of Statewide Health Planning and Development from 2006 to 2010, to determine differences in resource utilization for survivors and non-survivors and identify the predictors of LOS and total hospital charges. Descriptive statistics were assessed for demographic and clinical characteristics. General linear regression models were used to identify predictors of LOS and THC., Results: Seventy-six Trisomy 13 and 115 Trisomy 18 patients were identified, for whom inpatient mortality was 27.6% and 20.9%, respectively. In patients with Trisomy 13, after adjusting for gender, ethnicity, advanced directive (DNR), insurance and co-morbidities on multivariate analysis, the provision of more than 96 h of mechanical ventilation was associated with significantly increased LOS (standard error, SE) by 18.0 ± 5.3 days and THC (SE) by $399,000 ± $85,000. In terms of insurance type, patients with private coverage had 10.8 ± 4.9 days more than patients with Medicaid. In patients with Trisomy 18, on multivariate analysis, after adjusting for gender, ethnicity, DNR, insurance and co-morbidities, more than 96 h of mechanical ventilation was associated with increased LOS (SE) by 36.8 ± 6.8 days and THC (SE) by $365,000 ± $59,000., Conclusion: Understanding predictors that are associated with longer LOS and higher THC may be associated in hospital resource allocation for this vulnerable population of infants., (Copyright © 2019. Published by Elsevier B.V.)
- Published
- 2019
- Full Text
- View/download PDF
45. Cycle stability of conversion-type iron fluoride lithium battery cathode at elevated temperatures in polymer electrolyte composites.
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Huang Q, Turcheniuk K, Ren X, Magasinski A, Song AY, Xiao Y, Kim D, and Yushin G
- Abstract
Metal fluoride conversion cathodes offer a pathway towards developing lower-cost Li-ion batteries. Unfortunately, such cathodes suffer from extremely poor performance at elevated temperatures, which may prevent their use in large-scale energy storage applications. Here we report that replacing commonly used organic electrolytes with solid polymer electrolytes may overcome this hurdle. We demonstrate long-cycle stability for over 300 cycles at 50 °C attained in high-capacity (>450 mAh g
-1 ) FeF2 cathodes. The absence of liquid solvents reduced electrolyte decomposition, while mechanical properties of the solid polymer electrolyte enhanced cathode structural stability. Our findings suggest that the formation of an elastic, thin and homogeneous cathode electrolyte interphase layer on active particles is a key for stable performance. The successful operation of metal fluorides at elevated temperatures opens a new avenue for their practical applications and future successful commercialization.- Published
- 2019
- Full Text
- View/download PDF
46. AuNP-M2e + sCpG vaccination of juvenile mice generates lifelong protective immunity to influenza A virus infection.
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Bimler L, Song AY, Le DT, Murphy Schafer A, and Paust S
- Abstract
Background: Influenza virus infection causes significant morbidity and mortality worldwide. Humans fail to make a universally protective memory response to influenza A because of high mutation rates in the immune-dominant influenza epitopes. We seek the development of a universal influenza A vaccine. The extracellular domain of the M2-ion channel (M2e) is an ideal antigenic target, as it is highly conserved, has a low mutation rate, and is essential for viral entry and replication. Considering the potential of a universal influenza vaccine for lifelong protection, we aimed to examine this potential using a recently published gold nanoparticle M2e vaccine with CpG as an adjuvant (AuNP-M2e + sCpG). Intranasal vaccination induces an M2e-specific memory response, which is protective against lethal infection with H1N1, H3N2, and H5N1 serotypes, in young BALB/c mice. Protection with AuNP-M2e + sCpG has been published up to 8 months after vaccination. However, the highest risk population during most influenza seasons is adults over 65 years old. Additionally, the efficacy of many vaccines decrease after aging and requiring booster vaccinations to remain effective., Results: To determine if the AuNP-M2e + sCpG vaccine is a viable option as a universal vaccination capable of protection through geriatric age, we tested if the AuNP-M2e + sCpG vaccination loses efficacy after aging mice to geriatric age (over 18 months). Our data shows that mice aged 15 months after vaccination (~ 18-21 months old) retain significant M2e-specific antibody titers in total IgG, IgG1, IgG2a, and IgG2b. These mice are significantly protected from lethal influenza challenge (H1N1, 8.3 PFU). Further, these antibody titers increase upon infection with influenza A and remain elevated for 3 months, suggesting the elderly mice retain effective M2e-specific memory B cells., Conclusions: Our results demonstrate that protective M2e-specific memory in mice developed at a young age can persist until geriatric age. Additionally, this memory is protective and M2e-specific B cells produced by vaccination with AuNP-M2e + sCpG are maintained and functional. If the results of this study persist in humans, they suggest that a universal influenza A vaccine could be administered early in life and maintain lifelong protection into geriatric age., Competing Interests: Competing interestsThe authors have no conflict of interest.
- Published
- 2019
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47. Sociodemographic and Kidney Disease Correlates of Nutrient Intakes Among Urban African Americans With Uncontrolled Hypertension.
- Author
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Song AY, Crews DC, Ephraim PL, Han D, Greer RC, Boyér LL, Ameling J, Gayles DJ, Sneed V, Carson KA, Albert M, Liu Y, Cooper LA, and Boulware LE
- Subjects
- Aged, Ascorbic Acid administration & dosage, Baltimore epidemiology, Blood Pressure, Cross-Sectional Studies, Dietary Fiber administration & dosage, Female, Humans, Logistic Models, Magnesium administration & dosage, Male, Middle Aged, Nutritional Status, Potassium, Dietary administration & dosage, Socioeconomic Factors, Surveys and Questionnaires, Urban Population, Black or African American statistics & numerical data, Diet, Energy Intake, Hypertension epidemiology, Kidney Diseases epidemiology
- Abstract
Objective: The objective of this study was to determine the association between sociodemographic factors and intakes of 4 nutrients and associations between intakes and markers of kidney disease to identify opportunities to improve outcomes among clinically high-risk African Americans., Design and Methods: We conducted a cross-sectional study of baseline data from the Achieving Blood Pressure Control Together study, a randomized controlled trial of 159 African Americans (117 females) with uncontrolled hypertension in Baltimore MD. To determine the association between sociodemographic factors and nutrient intakes, we constructed linear and logistic regression models. Using logistic regression, we determined the association between below-median nutrient intakes and kidney disease. Our outcomes of interest were daily intakes of vitamin C, magnesium, dietary fiber, and potassium as estimated by the Block Fruit-Vegetable-Fiber Screener and kidney disease defined as estimated glomerular filtration rate <60 mL/min per 1.73 m2 or urinary albumin-to-creatinine ratio >=30 mg/g., Setting and Subjects: Baseline data from the Achieving Blood Pressure Control Together study, a randomized controlled trial of 159 African Americans (117 females) with uncontrolled hypertension, were obtained., Methods: To determine the association between sociodemographic factors and nutrient intakes, we constructed linear and logistic regression models. Using logistic regression, we determined the association between below-median nutrient intakes and kidney disease., Main Outcome Measures: Our outcomes of interest were daily intakes of vitamin C, magnesium, dietary fiber, and potassium as estimated by the Block Fruit-Vegetable-Fiber Screener and kidney disease defined as estimated glomerular filtration rate <60 mL/min per 1.73 m
2 or urinary albumin-to-creatinine ratio ≥30 mg/g., Results: Overall, compared to Institute of Medicine recommendations, participants had lower intakes of magnesium, fiber, and potassium but higher vitamin C intakes. For females, sociodemographic factors that significantly associated with lower intake of the 4 nutrients were older age, obesity, lower health numeracy, and lesser educational attainment. For males, none of the sociodemographic factors were significantly associated with nutrient intakes. Below-median intake was significantly associated with albumin-to-creatinine ratio ≥30 (adjusted odds ratio [95% confidence interval]: 3.4 [1.5, 7.8] for vitamin C; 3.6 [1.6, 8.4] for magnesium; 2.9 [1.3, 6.5] for fiber; 3.6 [1.6, 8.4] for potassium), but not with estimated glomerular filtration rate <60., Conclusion: African Americans with uncontrolled hypertension may have low intakes of important nutrients, which could increase their risk of chronic kidney disease. Tailored dietary interventions for African Americans at high risk for chronic kidney disease may be warranted., (Copyright © 2018 National Kidney Foundation, Inc. Published by Elsevier Inc. All rights reserved.)- Published
- 2019
- Full Text
- View/download PDF
48. Smartphones and Text Messaging are Associated With Higher Parent Quality of Life Scores and Enrollment in Early Intervention After NICU Discharge.
- Author
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Flores-Fenlon N, Song AY, Yeh A, Gateau K, Vanderbilt DL, Kipke M, Friedlich P, and Lakshmanan A
- Subjects
- Female, Humans, Infant, Infant, Newborn, Intensive Care Units, Neonatal, Male, Patient Discharge statistics & numerical data, Quality of Life, Continuity of Patient Care organization & administration, Early Intervention, Educational organization & administration, Infant, Premature, Infant, Premature, Diseases rehabilitation, Parents education, Text Messaging statistics & numerical data
- Abstract
The purpose of this study was to evaluate the impact of access to communication technology on caregiver quality of life, neurodevelopmental, and medical outcomes (eg, rehospitalization, emergency room visits, or surgeries) in preterm infants, and enrollment in public assistance programs. In this cross-sectional study, we surveyed families of preterm infants in a high-risk infant-follow-up clinic. We estimated associations of access to various modes of communication technology with outcomes, adjusting for sociodemographic and infant characteristics using linear and unconditional logistic regression. Access to email, text messaging, and smartphones was associated with higher quality of life scores on the Multicultural Quality of Life Index, and email and smartphone access was significantly associated with increased enrollment in early intervention. Evaluating smartphone and email access on neonatal intensive care unit discharge is important when considering enrollment in community programs and caregiver quality of life.
- Published
- 2019
- Full Text
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49. Progressive Impairment of NK Cell Cytotoxic Degranulation Is Associated With TGF-β1 Deregulation and Disease Progression in Pancreatic Cancer.
- Author
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Jun E, Song AY, Choi JW, Lee HH, Kim MY, Ko DH, Kang HJ, Kim SW, Bryceson Y, Kim SC, and Kim HS
- Subjects
- Cell Degranulation immunology, Cytotoxicity, Immunologic immunology, Disease Progression, Humans, Killer Cells, Natural pathology, Biomarkers, Tumor immunology, Killer Cells, Natural immunology, Pancreatic Neoplasms immunology, Pancreatic Neoplasms pathology, Transforming Growth Factor beta1 immunology
- Abstract
Natural killer (NK) cells are key effectors in cancer immunosurveillance and can be used as a prognostic biomarker in diverse cancers. Nonetheless, the role of NK cells in pancreatic cancer (PC) remains elusive, given conflicting data on their association with disease prognosis. In this study, using conventional K562 target cells and complementary engineered target cells providing defined and synergistic stimulation for NK cell activation, a correlation between impaired NK cell cytotoxic degranulation and PC progression was determined. Peripheral blood mononuclear cells (PBMCs) from 31 patients with newly diagnosed PC, 24 patients with non-malignant tumors, and 37 healthy controls were analyzed by flow cytometry. The frequency, phenotype, and effector functions of the NK cells were evaluated, and correlations between NK cell functions and disease stage and prognosis were analyzed. The results demonstrated that effector functions, but not frequency, of NK cells was progressively decreased on a per-cell basis during PC progression. Impaired cytotoxic degranulation, but not IFN-γ production, was associated with clinical features indicating disease progression, such as high serum CA19-9 and high-grade tumors. Significantly, this impairment correlated with cancer recurrence and mortality in a prospective analysis. Furthermore, the impaired cytotoxic degranulation was unrelated to NKG2D downregulation but was associated with increased circulating and tumor-associated TGF-β1 expression. Thus, NK cell cytotoxic activity was associated with PC progression and may be a favorable biomarker with predictive and prognostic value in PC.
- Published
- 2019
- Full Text
- View/download PDF
50. Effects of air pollution on mitochondrial function, mitochondrial DNA methylation, and mitochondrial peptide expression.
- Author
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Breton CV, Song AY, Xiao J, Kim SJ, Mehta HH, Wan J, Yen K, Sioutas C, Lurmann F, Xue S, Morgan TE, Zhang J, and Cohen P
- Subjects
- Adult, Animals, Cells, Cultured, Cohort Studies, Environmental Exposure, Female, Gene Expression, Humans, Infant, Infant, Newborn, Male, Mice, Inbred C57BL, Models, Animal, Pregnancy, Young Adult, Air Pollutants toxicity, DNA Methylation, DNA, Mitochondrial metabolism, Mitochondria drug effects, Mitochondria metabolism, Mitochondrial Proteins metabolism
- Abstract
Mitochondrial DNA is sensitive to damage by exogenous reactive oxygen sources, including traffic-related air pollution (TRAP). Given the important role for mitochondria in human disease, we hypothesized that prenatal air pollution exposure may be associated with mitochondrial dysfunction and that mitochondrial-derived peptides (MDPs) might protect against these effects. In in vitro studies, 24-hour exposure to nanoparticulate matter (nPM) increased oxidation of mtDNA, decreased mitochondrial consumption rate (OCR), and decreased mtDNAcn in SH-SY5Y cells. Addition of MDPs rescued these effects to varying degrees. Liver tissue taken from C57Bl/6 males exposed for 10 weeks to nPM had lower OCR, lower mtDNAcn and higher MDP levels, similar to in vitro studies. In newborn cord blood, MDP levels were positively associated with prenatal TRAP exposures. Moreover, DNA methylation of two distinct regions of the D-Loop in the mitochondria genome was associated with levels of several MDPs. Our in vitro and in vivo data indicate that TRAP can directly affect mitochondrial respiratory function and mtDNAcn. Treatment of cells with MDPs can counteract TRAP induced-effects. Lastly, we present evidence that suggests MDPs may be regulated in part by mitochondrial DNA methylation in humans., (Copyright © 2019 Elsevier B.V. and Mitochondria Research Society. All rights reserved.)
- Published
- 2019
- Full Text
- View/download PDF
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