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Anderson W, Ponce FA, Kinsman MJ, Sani S, Hwang B, Ghinda D, Kogan M, Mahoney JM, Amin DB, Van Horn M, McGuckin JP, Razo-Castaneda D, Bucklen BS. Robotic-Assisted Navigation for Stereotactic Neurosurgery: A Cadaveric Investigation of Accuracy, Time, and Radiation. Oper Neurosurg (Hagerstown) 2023; 26:01787389-990000000-00991. [PMID: 38054727 PMCID: PMC11008650 DOI: 10.1227/ons.0000000000001024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 10/18/2023] [Indexed: 12/07/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Despite frequent use, stereotactic head frames require manual coordinate calculations and manual frame settings that are associated with human error. This study examines freestanding robot-assisted navigation (RAN) as a means to reduce the drawbacks of traditional cranial stereotaxy and improve targeting accuracy. METHODS Seven cadaveric human torsos with heads were tested with 8 anatomic coordinates selected for lead placement mirrored in each hemisphere. Right and left hemispheres of the brain were randomly assigned to either the traditional stereotactic arc-based (ARC) group or the RAN group. Both target accuracy and trajectory accuracy were measured. Procedural time and the radiation required for registration were also measured. RESULTS The accuracy of the RAN group was significantly greater than that of the ARC group in both target (1.2 ± 0.5 mm vs 1.7 ± 1.2 mm, P = .005) and trajectory (0.9 ± 0.6 mm vs 1.3 ± 0.9 mm, P = .004) measurements. Total procedural time was also significantly faster for the RAN group than for the ARC group (44.6 ± 7.7 minutes vs 86.0 ± 12.5 minutes, P < .001). The RAN group had significantly reduced time per electrode placement (2.9 ± 0.9 minutes vs 5.8 ± 2.0 minutes, P < .001) and significantly reduced radiation during registration (1.9 ± 1.1 mGy vs 76.2 ± 5.0 mGy, P < .001) compared with the ARC group. CONCLUSION In this cadaveric study, cranial leads were placed faster and with greater accuracy using RAN than those placed with conventional stereotactic arc-based technique. RAN also required significantly less radiation to register the specimen's coordinate system to the planned trajectories. Clinical testing should be performed to further investigate RAN for stereotactic cranial surgery.
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Affiliation(s)
- William Anderson
- Department of Neurosurgery, The Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Francisco A. Ponce
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona, USA
| | - Michael J. Kinsman
- Neurosurgery, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Sepehr Sani
- Department of Neurosurgery, Rush University Medical Center, Chicago, Illinois, USA
| | - Brian Hwang
- Department of Neurosurgery, The Johns Hopkins Hospital, Baltimore, Maryland, USA
- Current Affiliation: Orange County Neurosurgical Associates, Laguna Hills, California, USA
| | - Diana Ghinda
- Department of Neurosurgery, The Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Michael Kogan
- Department of Neurological Surgery, Thomas Jefferson University Hospitals, Philadelphia, Pennsylvania, USA
| | - Jonathan M. Mahoney
- Musculoskeletal Education and Research Center, A Division of Globus Medical, Inc., Audubon, Pennsylvania, USA
| | - Dhara B. Amin
- Musculoskeletal Education and Research Center, A Division of Globus Medical, Inc., Audubon, Pennsylvania, USA
| | - Margaret Van Horn
- Musculoskeletal Education and Research Center, A Division of Globus Medical, Inc., Audubon, Pennsylvania, USA
| | - Joshua P. McGuckin
- Musculoskeletal Education and Research Center, A Division of Globus Medical, Inc., Audubon, Pennsylvania, USA
| | - Dominic Razo-Castaneda
- School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, Pennsylvania, USA
| | - Brandon S. Bucklen
- Musculoskeletal Education and Research Center, A Division of Globus Medical, Inc., Audubon, Pennsylvania, USA
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Hady TF, Hwang B, Waworuntu RL, Ratner BD, Bryers JD. Cells resident to precision templated 40-µm pore scaffolds generate small extracellular vesicles that affect CD4 + T cell phenotypes through regulatory TLR4 signaling. Acta Biomater 2023; 166:119-132. [PMID: 37150279 PMCID: PMC10330460 DOI: 10.1016/j.actbio.2023.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 04/27/2023] [Accepted: 05/02/2023] [Indexed: 05/09/2023]
Abstract
Precision porous templated scaffolds (PTS) are a hydrogel construct of uniformly sized interconnected spherical pores that induce a pro-healing response (reducing the foreign body reaction, FBR) exclusively when the pores are 30-40µm in diameter. Our previous work demonstrated the necessity of Tregs in the maintenance of PTS pore size specific differences in CD4+ T cell phenotype. Work here characterizes the role of Tregs in the responses to implanted 40µm and 100µm PTS using WT and FoxP3+ cell (Treg) depleted mice. Proteomic analyses indicate that integrin signaling, monocytes/macrophages, cytoskeletal remodeling, inflammatory cues, and vesicule endocytosis may participate in Treg activation and the CD4+ T cell equilibrium modulated by PTS resident cell-derived small extracellular vesicles (sEVs). The role of MyD88-dependent and MyD88-independent TLR4 activation in PTS cell-derived sEV-to-T cell signaling is quantified by treating WT, TLR4ko, and MyD88ko splenic T cells with PTS cell-derived sEVs. STAT3 and mTOR are identified as mechanisms for further study for pore-size dependent PTS cell-derived sEV-to-T cell signaling. STATEMENT OF SIGNIFICANCE: Unique cell populations colonizing only within 40µm pore size PTS generate sEVs that resolve inflammation by modifying CD4+ T cell phenotypes through TLR4 signaling.
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Affiliation(s)
- T F Hady
- Department of Bioengineering, University of Washington, Seattle, WA 98105, USA
| | - B Hwang
- Center for Lung Biology, Department of Surgery, University of Washington Seattle, WA 98109, USA
| | - R L Waworuntu
- Center for Lung Biology, Department of Surgery, University of Washington Seattle, WA 98109, USA
| | - B D Ratner
- Department of Bioengineering, University of Washington, Seattle, WA 98105, USA
| | - J D Bryers
- Department of Bioengineering, University of Washington, Seattle, WA 98105, USA.
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Lopez B, Wang X, Chen A, Ma T, Mendez-Jimenez D, Cobb LC, Frederickson C, Fang T, Hwang B, Shiraiwa M, Park M, Park K, Yao Q, Yoon S, Jung H. Metal contents and size distributions of brake and tire wear particles dispersed in the near-road environment. Sci Total Environ 2023; 883:163561. [PMID: 37088393 DOI: 10.1016/j.scitotenv.2023.163561] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 04/02/2023] [Accepted: 04/13/2023] [Indexed: 05/03/2023]
Abstract
Traffic related non-tailpipe particulate matter emissions can rival the continuously decreasing tailpipe emissions in modern fleets. Non-tailpipe emissions have become the dominating source of traffic emissions in California already. This study measured ambient PM2.5 and PM10 concentrations at near road environments for two major highways in California, I-5 in Anaheim and I-710 in Long Beach. A total of 51 elements were measured from filter samples collected over four-hour intervals for a two-week period in the winter of 2020 before the statewide lockdown by the COVID-19 pandemic. Iron was the most abundant element in ΔPM10 (differences between downwind and upwind sites), contributing to 30 % and 24 % of total measured elements in ΔPM10 at the I-5 and I-710 locations, respectively. Iron correlated highly with other brake wear markers (e.g., titanium, copper, barium, manganese, and zirconium) with coefficient of determination (r2) ranging from 0.67 to 0.90 in both PM2.5 and PM10. Silicon was the second most abundant element, contributing to 21 % of total measured elements in ΔPM2.5 and ΔPM10. Silicon showed strong correlations with crustal elements such as calcium (r2 = 0.90), aluminum (r2 = 0.96), and potassium (r2 = 0.72) in ΔPM2.5, and the correlations were even higher in ΔPM10. Barium had a weak correlation with zinc, a commonly used maker for tire wear, with r2 = 0.63 and r2 = 0.11 for ΔPM10 at the I-5 and I-710 locations respectively. Barium showed a positive correlation with crosswind speed and could serve as a good brake wear PM marker. Hourly PM2.5 concentrations of iron and zinc showed cyclic peaks from 0800 to 1000 h at I-5 during weekdays. Particle mass distributions showed peaks near ~7 μm, while particle number distributions showed peaks near 2.1 μm and 6.5 μm, respectively. This is consistent with brake wear and road dust size ranges previously reported.
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Affiliation(s)
- Brenda Lopez
- CE-CERT, University of California, Riverside, United States of America
| | | | - Antony Chen
- University of Nevada, Las Vegas, United States of America
| | - Tianyi Ma
- CE-CERT, University of California, Riverside, United States of America
| | | | - Ling Cui Cobb
- CE-CERT, University of California, Riverside, United States of America
| | - Chas Frederickson
- CE-CERT, University of California, Riverside, United States of America
| | - Ting Fang
- University of California, Irvine, United States of America; The Hong Kong University of Science and Technology, Guangzhou, China
| | - Brian Hwang
- University of California, Irvine, United States of America
| | | | - Minhan Park
- Gwangju Institute of Science and Technology, United States of America
| | - Kihong Park
- Gwangju Institute of Science and Technology, United States of America
| | - Qi Yao
- California Air Resources Board, United States of America
| | - Seungju Yoon
- California Air Resources Board, United States of America
| | - Heejung Jung
- CE-CERT, University of California, Riverside, United States of America.
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Joshi Y, Scheuer S, Soto C, Chew H, Hwang B, Iyer A, Connellan M, Watson A, Granger E, Jansz P, MacDonald P. Pushing The Boundaries of Donation After Circulatory Death Heart Transplantation - The Australian Experience. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Joshi Y, Villanueva J, Gao L, Hwang B, Wang K, Kasavaraj A, Doyle A, Wu J, Palpant N, King G, Iyer A, Jansz P, MacDonald P. Improving Asystolic Warm Ischemic Time Tolerance in Donation after Circulatory Death Donor Hearts. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Kim MJ, Hwang B, Mampre D, Negoita S, Tsehay Y, Sair H, Kang JY, Anderson WS. Ablation of apparent diffusion coefficient hyperintensity clusters in mesial temporal lobe epilepsy improves seizure outcomes after laser interstitial thermal therapy. Epilepsia 2023; 64:654-666. [PMID: 36196769 DOI: 10.1111/epi.17432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 10/01/2022] [Accepted: 10/03/2022] [Indexed: 01/14/2023]
Abstract
OBJECTIVE Laser interstitial thermal therapy (LiTT) is a minimally invasive surgical procedure for intractable mesial temporal epilepsy (mTLE). LiTT is safe and effective, but seizure outcomes are highly variable due to patient variability, suboptimal targeting, and incomplete ablation of the epileptogenic zone. Apparent diffusion coefficient (ADC) is a magnetic resonance imaging (MRI) sequence that can identify potential epileptogenic foci in the mesial temporal lobe to improve ablation and seizure outcomes. The objective of this study was to investigate whether ablation of tissue clusters with high ADC values in the mesial temporal structures is associated with seizure outcome in mTLE after LiTT. METHODS Twenty-seven patients with mTLE who underwent LiTT at our institution were analyzed. One-year seizure outcome was categorized as complete seizure freedom (International League Against Epilepsy [ILAE] Class I) and residual seizures (ILAE Class II-VI). Volumes of hippocampus and amygdala were segmented from the preoperative T1 MRI sequence. Spatially distinct hyperintensity clusters were identified in the preoperative ADC map. Proportion of cluster volume and number ablated were associated with seizure outcomes. RESULTS The mean age at surgery was 37.5 years and the mean follow-up duration was 1.9 years. Proportions of hippocampal cluster volume (p = .013) and number (p = .03) ablated were significantly higher in patients with seizure freedom. For amygdala clusters, the proportion of cluster number ablated was significantly associated with seizure outcome (p = .026). In the combined amygdalohippocampal complex, ablation of amygdalohippocampal clusters reliably predicted seizure outcome by their volume ablated (area under the curve [AUC] = 0.7670, p = .02). SIGNIFICANCE Seizure outcome after LiTT in patients with mTLE was associated significantly with the extent of cluster ablation in the amygdalohippocampal complex. The results suggest that preoperative ADC analysis may help identify high-yield pathological tissue clusters that represent epileptogenic foci. ADC-based cluster analysis can potentially assist ablation targeting and improve seizure outcome after LiTT in mTLE.
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Affiliation(s)
- Min Jae Kim
- Department of Neurosurgery, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
- Department of Neurology, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
- Department of Biomedical Engineering, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
| | - Brian Hwang
- Department of Neurosurgery, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
| | - David Mampre
- Department of Neurosurgery, University of Florida College of Medicine, Gainesville, Florida, USA
| | - Serban Negoita
- Department of Neurosurgery, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
| | - Yohannes Tsehay
- Department of Neurosurgery, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
| | - Haris Sair
- Department of Radiology, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
| | - Joon Y Kang
- Department of Neurology, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
| | - William S Anderson
- Department of Neurosurgery, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
- Department of Biomedical Engineering, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
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Sacino AN, Materi J, Davidar AD, Judy B, Liu A, Hwang B, Theodore N. Robot-assisted atlantoaxial fixation: illustrative cases. Journal of Neurosurgery: Case Lessons 2022; 3:CASE22114. [PMID: 35733845 PMCID: PMC9210265 DOI: 10.3171/case22114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 03/09/2022] [Indexed: 11/21/2022]
Abstract
BACKGROUND Placing screws in the high cervical spine can be challenging because of the vital anatomical structures located in that region. Precision and accuracy with screw placement is needed. The use of robotics in the cervical spine has been described before; however, here the authors describe the use of a new robotic setup. OBSERVATIONS The authors describe 2 cases of robot-assisted placement of C2 pars screws and C1–2 transarticular screws. The operative plans for each patient were as follows: placement of C2 pars screws with C2–4 fusion for hangman’s fracture and placement of C1–2 transarticular screws for degenerative disease. Intraoperative computed tomography (CT) was used to plan and navigate the screws. Postoperative CT showed excellent placement of hardware. Both patients presented for initial postoperative clinic visits with no recurrence of prior symptoms. LESSONS Intraoperative robotic assistance with instrumentation of the high cervical spine, particularly C2 pars and C1–2 transarticular screws, may ensure proper screw placement and help avoid injury.
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Affiliation(s)
- Amanda N. Sacino
- Department of Neurosurgery, Johns Hopkins School of Medicine, Baltimore, Maryland
| | - Joshua Materi
- Department of Neurosurgery, Johns Hopkins School of Medicine, Baltimore, Maryland
| | - A. Daniel Davidar
- Department of Neurosurgery, Johns Hopkins School of Medicine, Baltimore, Maryland
| | - Brendan Judy
- Department of Neurosurgery, Johns Hopkins School of Medicine, Baltimore, Maryland
| | - Ann Liu
- Department of Neurosurgery, Johns Hopkins School of Medicine, Baltimore, Maryland
| | - Brian Hwang
- Department of Neurosurgery, Johns Hopkins School of Medicine, Baltimore, Maryland
| | - Nicholas Theodore
- Department of Neurosurgery, Johns Hopkins School of Medicine, Baltimore, Maryland
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8
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Joshi Y, Scheuer S, Soto C, Hwang B, Zhao C, Chew H, Iyer A, Watson A, Connellan M, Granger E, Jansz P, Macdonald P. Heart Transplantation from Donation After Circulatory Death Donors: An Update on the Australian Experience. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Cascella N, Butala AA, Mills K, Kim MJ, Salimpour Y, Wojtasievicz T, Hwang B, Cullen B, Figee M, Moran L, Lenz F, Sawa A, Schretlen DJ, Anderson W. Deep Brain Stimulation of the Substantia Nigra Pars Reticulata for Treatment-Resistant Schizophrenia: A Case Report. Biol Psychiatry 2021; 90:e57-e59. [PMID: 33906736 DOI: 10.1016/j.biopsych.2021.03.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 03/02/2021] [Indexed: 12/26/2022]
Affiliation(s)
- Nicola Cascella
- Johns Hopkins Schizophrenia Center, Johns Hopkins Hospital, the Johns Hopkins University School of Medicine and Bloomberg School of Public Health, Baltimore, Maryland; Department of Psychiatry, Johns Hopkins Hospital, the Johns Hopkins University School of Medicine and Bloomberg School of Public Health, Baltimore, Maryland.
| | - Ankur A Butala
- Department of Psychiatry, Johns Hopkins Hospital, the Johns Hopkins University School of Medicine and Bloomberg School of Public Health, Baltimore, Maryland; Department of Neurology, Johns Hopkins Hospital, the Johns Hopkins University School of Medicine and Bloomberg School of Public Health, Baltimore, Maryland
| | - Kelly Mills
- Department of Neurology, Johns Hopkins Hospital, the Johns Hopkins University School of Medicine and Bloomberg School of Public Health, Baltimore, Maryland
| | - Min Jae Kim
- Department of Neurology, Johns Hopkins Hospital, the Johns Hopkins University School of Medicine and Bloomberg School of Public Health, Baltimore, Maryland
| | - Yousef Salimpour
- Department of Neurology, Johns Hopkins Hospital, the Johns Hopkins University School of Medicine and Bloomberg School of Public Health, Baltimore, Maryland
| | - Teresa Wojtasievicz
- Department of Neurosurgery, Johns Hopkins Hospital, the Johns Hopkins University School of Medicine and Bloomberg School of Public Health, Baltimore, Maryland
| | - Brian Hwang
- Department of Neurosurgery, Johns Hopkins Hospital, the Johns Hopkins University School of Medicine and Bloomberg School of Public Health, Baltimore, Maryland
| | - Bernadette Cullen
- Department of Psychiatry, Johns Hopkins Hospital, the Johns Hopkins University School of Medicine and Bloomberg School of Public Health, Baltimore, Maryland
| | - Martijn Figee
- Nash Family Center for Advanced Circuit Therapeutics, Icahn School of Medicine, New York, New York
| | - Lauren Moran
- Division of Psychotic Disorders, McLean Hospital, Belmont, Massachusetts
| | - Fred Lenz
- Department of Neurosurgery, Johns Hopkins Hospital, the Johns Hopkins University School of Medicine and Bloomberg School of Public Health, Baltimore, Maryland
| | - Akira Sawa
- Johns Hopkins Schizophrenia Center, Johns Hopkins Hospital, the Johns Hopkins University School of Medicine and Bloomberg School of Public Health, Baltimore, Maryland; Department of Psychiatry, Johns Hopkins Hospital, the Johns Hopkins University School of Medicine and Bloomberg School of Public Health, Baltimore, Maryland; Department of Neuroscience, Johns Hopkins Hospital, the Johns Hopkins University School of Medicine and Bloomberg School of Public Health, Baltimore, Maryland; Department of Biomedical Engineering, Johns Hopkins Hospital, the Johns Hopkins University School of Medicine and Bloomberg School of Public Health, Baltimore, Maryland; Department of Mental Health, Johns Hopkins Hospital, the Johns Hopkins University School of Medicine and Bloomberg School of Public Health, Baltimore, Maryland
| | - David J Schretlen
- Department of Psychiatry, Johns Hopkins Hospital, the Johns Hopkins University School of Medicine and Bloomberg School of Public Health, Baltimore, Maryland
| | - William Anderson
- Department of Neurosurgery, Johns Hopkins Hospital, the Johns Hopkins University School of Medicine and Bloomberg School of Public Health, Baltimore, Maryland
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Hwang B, Yu H, Jeong Y, Cho HJ, Lee HY. Self-care behaviours mediate the effect of educational intervention on health-related quality of life of patients with heart failure: causal mediation analysis. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background/Introduction
Educational interventions have been developed and tested in an attempt to improve health-related quality of life (HRQOL) for patients with heart failure (HF). While some have shown satisfactory results, the mechanism of the intervention effect on HRQOL remains unclear.
Purpose
To explore whether HF knowledge, self-care behaviours, self-care maintenance, self-care confidence, or social support mediates the effect of intervention on HRQOL of patients with HF
Methods
We analysed data from a randomized controlled trial testing the effect of an educational intervention for patients with HF. The intervention group (n=60) received 1-hour single session education followed by 8-week telephone follow-ups, and the control group (n=62) received care as usual. Study variables were measured at baseline and at 3 and 6 months. Using causal mediation analysis described by Valeri & VanderWeele (2013), we explored the causal pathway between intervention allocation and HRQOL at 6 months with HF knowledge, self-care behaviours, self-care maintenance, self-care confidence, and social support measured at 3 months as potential mediators (Figure 1).
Results
Intervention allocation was significantly associated with HF knowledge, self-care behaviours, self-care maintenance, and self-care confidence at 3 months (all p<0.05), but not with social support at 3 months (p=0.57). In unadjusted models, none of the potential mediators had a significant indirect effect between intervention and HRQOL. When adjusting for age and gender, the indirect effect of self-care behaviours on 6-month HRQOL became significant (indirect effect −6.24, 95% CI: −12.88 to −1.18). When baseline values of the mediator and HRQOL were adjusted in addition to age and gender, the indirect effect of self-care behaviours remained significant (indirect effect −7.18, 95% CI: −13.48 to −2.35) and the indirect effect of self-care maintenance became significant (indirect effect −3.02, 95% CI: −7.94 to −0.07).
Conclusion
Our findings support the mediating role of self-care behaviours on the relationship between the educational intervention and HRQOL of patients with HF. In order to successfully improve HRQOL of patients with HF, educational interventions should aim to promote self-care behaviours, especially by encouraging treatment adherence and self-monitoring.
Funding Acknowledgement
Type of funding sources: Public Institution(s). Main funding source(s): Seoul National University, College of Medicine Figure 1. Mediation model
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Affiliation(s)
- B Hwang
- Seoul National University, College of Nursing, Seoul, Korea (Republic of)
| | - H Yu
- Seoul National University, College of Nursing, Seoul, Korea (Republic of)
| | - Y Jeong
- Seoul National University, College of Nursing, Seoul, Korea (Republic of)
| | - H.-J Cho
- Seoul National University Hospital, Department of Internal Medicine, Seoul, Korea (Republic of)
| | - H.-Y Lee
- Seoul National University Hospital, Department of Internal Medicine, Seoul, Korea (Republic of)
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Kim MJ, Hwang B, Mampre D, Negoita S, Tsehay Y, Sair H, Kang JY, Anderson W. Apparent diffusion coefficient is associated with seizure outcome after magnetic resonance-guided laser interstitial thermal therapy for mesial temporal lobe epilepsy. Epilepsy Res 2021; 176:106726. [PMID: 34298428 DOI: 10.1016/j.eplepsyres.2021.106726] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 07/08/2021] [Accepted: 07/13/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Magnetic resonance-guided laser interstitial thermal therapy (MRgLiTT) is becoming a first-line surgical therapy for mesial temporal lobe epilepsy (mTLE) due to good seizure control and low complication risk. However, seizure outcomes after MRgLiTT remain highly variable and there is a need to improve patient selection and post-operative prognostication. In this retrospective study, we investigated whether the pre-operative MRI-derived apparent diffusion coefficient (ADC), used as a marker of tissue pathology in the mesial temporal structures could help predict seizure outcome. METHODS Thirty-five patients who underwent MRgLiTT at our institution between 2014 and 2019 were included in the study. Demographic and clinical data were retrospectively collected. Seizure outcome was defined as good (ILAE Class I-II) and poor (ILAE Class III-VI). Volumetrics were performed on pre-ablation hippocampus and amygdala. Ablation volumes, and the proportion of ablated hippocampus and amygdala calculated via their respective mean voxel-wise ADC intensities were quantified from pre-operative and intra-operative post-ablation MRIs and statistically compared between the two outcome cohorts. Univarate and multivariate regression analysis was performed to identify demographic, clinical, and radiographic predictors of seizure outcome. RESULTS Mean age at LiTT was 36 years and 14 (40 %) were female. Mean follow-up duration was 1.90 ± 0.17 years. Twenty-seven (77 %) patients had mesial temporal sclerosis. There was no significant difference in the ablation volumes and proportion of ablated volume of hippocampus and amygdala between the two outcome groups. Patients with good seizure outcome had significantly higher normalized ADC intensities in the ablated mesial temporal structures compared to those with poor outcome (0.01 ± 0.08 vs.-0.29 ± 0.06; p = 0.015). CONCLUSIONS mTLE patients with higher ADC intensities in the ablated regions of the hippocampus and the amygdala are more likely to have good seizure outcome following MRgLiTT. Our results suggest that pre-operative ADC analysis may improve both patient selection and epileptogenic zone targeting during MRgLiTT. Further investigation with large, prospective cohorts is needed to validate the clinical utility of ADC in improving seizure outcome following MRgLiTT.
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Affiliation(s)
- Min Jae Kim
- Department of Neurosurgery, Johns Hopkins School of Medicine, Baltimore, MD, 21205, United States; Department of Neurology, Johns Hopkins School of Medicine, Baltimore, MD, 21205, United States; Department of Biomedical Engineering, Johns Hopkins School of Medicine, Baltimore, MD, 21205, United States.
| | - Brian Hwang
- Department of Neurosurgery, Johns Hopkins School of Medicine, Baltimore, MD, 21205, United States.
| | - David Mampre
- Department of Neurosurgery, Johns Hopkins School of Medicine, Baltimore, MD, 21205, United States.
| | - Serban Negoita
- Department of Neurosurgery, Johns Hopkins School of Medicine, Baltimore, MD, 21205, United States.
| | - Yohannes Tsehay
- Department of Neurosurgery, Johns Hopkins School of Medicine, Baltimore, MD, 21205, United States.
| | - Haris Sair
- Department of Radiology, Johns Hopkins School of Medicine, Baltimore, MD, 21205, United States.
| | - Joon Y Kang
- Department of Neurology, Johns Hopkins School of Medicine, Baltimore, MD, 21205, United States.
| | - William Anderson
- Department of Neurosurgery, Johns Hopkins School of Medicine, Baltimore, MD, 21205, United States; Department of Biomedical Engineering, Johns Hopkins School of Medicine, Baltimore, MD, 21205, United States.
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Hwang B, Granger E, Jansz P, Malouf M, Watson A, Iyer A, Havryk A, Plit M, Connellan M. Development of a Donor-Recipient Matching Algorithm for Lung Transplantation in Australia. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.1906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Kim JH, Um R, Liu J, Patel J, Curry E, Aghabaglou F, Mahapatra S, Ainechi A, Tsehay Y, Ehresman J, Hwang B, Tyler B, Iyer R, Theodore N, Manbachi A. Development of a Smart Hospital Assistant: Integrating Artificial Intelligence and a Voice-User Interface for Improved Surgical Outcomes. Proc SPIE Int Soc Opt Eng 2021; 11601:116010U. [PMID: 35341075 PMCID: PMC8957208 DOI: 10.1117/12.2580995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Patient safety and efficiency are top priorities in any surgical procedure. One effective way to achieve these objectives is to automate the logistical and routine tasks that occur in the operating suite. Inspired by smart assistant technology already widely used in the consumer sector, we engineered the Smart Hospital Assistant (SHA), a smart, voice-controlled virtual assistant that handles natural speech recognition while executing non-surgical functions to aid any surgery. In simulated procedures, the SHA reduced operating time, optimized surgical staff resources, and reduced the number of major touch-points that can lead to surgical site infections. The SHA holds promise not only for use in the operating theater, but also in understaffed healthcare environments where automation can improve healthcare delivery.
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Affiliation(s)
- Jeong Hun Kim
- Dept. of Electrical and Computer Engineering, Johns Hopkins University, Baltimore MD
- Dept. of Neurosurgery, Johns Hopkins University, Baltimore MD
| | - Richard Um
- Dept. of Biomedical Engineering, Johns Hopkins University, Baltimore MD
- Dept. of Neurosurgery, Johns Hopkins University, Baltimore MD
| | - Jonathan Liu
- Dept. of Biomedical Engineering, Johns Hopkins University, Baltimore MD
| | - Japesh Patel
- Dept. of Neurosurgery, Johns Hopkins University, Baltimore MD
| | - Eli Curry
- Dept. of Neurosurgery, Johns Hopkins University, Baltimore MD
| | | | | | - Ana Ainechi
- Dept. of Neurosurgery, Johns Hopkins University, Baltimore MD
| | - Yohannes Tsehay
- Dept. of Neurosurgery, Johns Hopkins University, Baltimore MD
| | - Jeff Ehresman
- Dept. of Neurosurgery, Johns Hopkins University, Baltimore MD
| | - Brian Hwang
- Dept. of Neurosurgery, Johns Hopkins University, Baltimore MD
| | - Betty Tyler
- Dept. of Neurosurgery, Johns Hopkins University, Baltimore MD
| | - Rajiv Iyer
- Dept. of Orthopedic Surgery, Columbia University Irving Medical Center, New York City NY
| | - Nicholas Theodore
- Dept. of Biomedical Engineering, Johns Hopkins University, Baltimore MD
- Dept. of Neurosurgery, Johns Hopkins University, Baltimore MD
| | - Amir Manbachi
- Dept. of Biomedical Engineering, Johns Hopkins University, Baltimore MD
- Dept. of Neurosurgery, Johns Hopkins University, Baltimore MD
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14
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Vargo KB, Stahl P, Hwang B, Hwang E, Giordano D, Randolph P, Celentano C, Hepler R, Amin K. Surfactant Impact on Interfacial Protein Aggregation and Utilization of Surface Tension to Predict Surfactant Requirements for Biological Formulations. Mol Pharm 2020; 18:148-157. [PMID: 33253579 DOI: 10.1021/acs.molpharmaceut.0c00743] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Biological drug products are formulated with excipients to maintain stability over the shelf life of the product. Surfactants are added to the drug product to stabilize air-water interfaces known to induce protein aggregation. Early formulation development is focused on maintaining protein conformation and colloidal stability over the course of the drug product shelf life but rarely considers stability through dose preparation and administration. Specifically, intravenous (IV) bag preparation exposes the therapeutic protein to a different solution environment concurrently diluting the stabilizing excipients that had been added to the drug product formulation. Mixing in IV bags can generate dynamic changes in the air-water interfacial area known to cause protein aggregation if not sufficiently protected. Therefore, understanding the surfactant requirements for drug product end-to-end stability in early formulation development provides critical information for a right-first-time approach to drug product formulation and robust clinical preparation. The goal of these studies was to understand if interfacial properties of proteins could predict surfactant formulation requirements for end-to-end stability. Specifically, the interfacial properties of five proteins were measured in 0.9% saline and 5% dextrose. Furthermore, shaking studies were conducted to identify the minimum surfactant concentration required to prevent subvisible and visible particle formulation in each diluent. The impact of surfactant type and concentration on particle generation and size was explored. A mathematical model was generated to predict the minimum surfactant concentration required to prevent interface-driven aggregation in each diluent based on the change in surface pressure upon exposure of the protein to the interface. The model was tested under typical IV-preparation conditions with experimental output closely matching the model prediction. By employing this model and better understanding the role of surfactants in interfacial stability, drug product development can generate robust end-to-end large molecule formulations across shelf life, dose preparation, and administration.
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Affiliation(s)
- Kevin B Vargo
- BioTherapeutics Drug Product Development (BioTD DPD), Janssen Research and Development (Janssen R&D), Malvern, Pennsylvania 19355, United States
| | - Patrick Stahl
- BioTherapeutics Drug Product Development (BioTD DPD), Janssen Research and Development (Janssen R&D), Malvern, Pennsylvania 19355, United States
| | - Brian Hwang
- BioTherapeutics Drug Product Development (BioTD DPD), Janssen Research and Development (Janssen R&D), Malvern, Pennsylvania 19355, United States
| | - Erica Hwang
- BioTherapeutics Drug Product Development (BioTD DPD), Janssen Research and Development (Janssen R&D), Malvern, Pennsylvania 19355, United States
| | - Daniel Giordano
- BioTherapeutics Drug Product Development (BioTD DPD), Janssen Research and Development (Janssen R&D), Malvern, Pennsylvania 19355, United States
| | - Peyton Randolph
- BioTherapeutics Drug Product Development (BioTD DPD), Janssen Research and Development (Janssen R&D), Malvern, Pennsylvania 19355, United States
| | - Christina Celentano
- BioTherapeutics Drug Product Development (BioTD DPD), Janssen Research and Development (Janssen R&D), Malvern, Pennsylvania 19355, United States
| | - Robert Hepler
- BioTherapeutics Cell and Developability Sciences (BioTD CDS), Janssen Research and Development (Janssen R&D), Spring House, Pennsylvania 19477, United States
| | - Ketan Amin
- BioTherapeutics Drug Product Development (BioTD DPD), Janssen Research and Development (Janssen R&D), Malvern, Pennsylvania 19355, United States
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15
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Hwang B, Kim J, Chang K, Ahn Y, Byun S, Kim H, Bu S. Impact of Anemia on Long-Term Clinical Outcome in Patients with Left Ventricular Systolic Dysfunction after Acute Myocardial Infarction. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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16
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Bechtold R, Tselepidakis N, Garlow B, Glaister S, Zhu W, Liu R, Szewc A, Tandon A, Buono Z, Pitingolo J, Madalo C, Ferrara I, Shale C, Benassi T, Belzberg M, Gorelick N, Hwang B, Molina CA, Coles G, Tyler B, Suk I, Huang J, Brem H, Manbachi A. Minimizing cotton retention in neurosurgical procedures: which imaging modality can help? Proc SPIE Int Soc Opt Eng 2020; 11317:1131704. [PMID: 35350430 PMCID: PMC8958457 DOI: 10.1117/12.2548847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Cotton balls are used in neurosurgical procedures to assist with hemostasis and improve vision within the operative field. Although the surgeon can reshape pieces of cotton for multiple intraoperative uses, this customizability and scale also places them at perpetual risk of being lost, as blood-soaked cotton balls are visually similar to raw brain tissue. Retained surgical cotton can induce potentially life-threatening immunologic responses, impair postoperative imaging, lead to a textiloma or misdiagnosis, and/or require reoperation. This study investigated three imaging modalities (optical, acoustic, and radiographic) to find the most effective method of identifying foreign bodies during neurosurgery. First, we examined the use of dyes to increase contrast between cotton and surrounding parenchyma (optical approach). Second, we explored the ability to distinguish surgical cotton on or below the tissue surface from brain parenchyma using ultrasound imaging (acoustic approach). Lastly, we analyzed the ability of radiography to differentiate between brain parenchyma and cotton. Our preliminary testing demonstrated that dark-colored cotton is significantly more identifiable than white cotton on the surface level. Additional testing revealed that cotton has noticeable different acoustic characteristics (eg, speed of sound, absorption) from neural tissue, allowing for enhanced contrast in applied ultrasound imaging. Radiography, however, did not present sufficient contrast, demanding further examination. These solutions have the potential to significantly reduce the possibility of intraoperative cotton retention both on and below the surface of the brain, while still providing surgeons with traditional cotton material properties without affecting the surgical workflow.
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Affiliation(s)
- Raphael Bechtold
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD
| | - Niki Tselepidakis
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD
| | - Benjamin Garlow
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD
| | - Sean Glaister
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD
| | - William Zhu
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD
| | - Renee Liu
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD
| | - Alexandra Szewc
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD
| | - Arushi Tandon
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD
| | - Zachary Buono
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD
| | - James Pitingolo
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD
| | - Cristina Madalo
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD
| | - Isabella Ferrara
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD
| | - Collin Shale
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD
| | - Thomas Benassi
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD
| | - Micah Belzberg
- Department of Plastic Surgery, Johns Hopkins University, Baltimore, MD
| | - Noah Gorelick
- Department of Neurosurgery, Johns Hopkins University, Baltimore, MD
| | - Brian Hwang
- Department of Neurosurgery, Johns Hopkins University, Baltimore, MD
| | - Camilo A Molina
- Department of Neurosurgery, Johns Hopkins University, Baltimore, MD
| | - George Coles
- Johns Hopkins Applied Physics Laboratory, Laurel, MD
| | - Betty Tyler
- Department of Neurosurgery, Johns Hopkins University, Baltimore, MD
| | - Ian Suk
- Department of Neurosurgery, Johns Hopkins University, Baltimore, MD
| | - Judy Huang
- Department of Neurosurgery, Johns Hopkins University, Baltimore, MD
| | - Henry Brem
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD
- Department of Neurosurgery, Johns Hopkins University, Baltimore, MD
| | - Amir Manbachi
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD
- Department of Neurosurgery, Johns Hopkins University, Baltimore, MD
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17
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Zegzouti H, Hwang B, Nath N, Goueli S. Abstract 3446: Deciphering key cancer and inflammation signaling pathways with homogeneous bioluminescent cell-based kinase activity assays. Cancer Res 2018. [DOI: 10.1158/1538-7445.am2018-3446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Signaling pathways activation leads to a multitude of cellular responses including modulation of enzyme activity, altered gene expression, and protein translocation or degradation. Specific phosphorylation events by specific kinases in the cell constitute important nodes in signaling pathways. Altered normal kinase activity leads to several undesirable consequences, causing diseases such as cancer and inflammation. Thus, monitoring these signaling events is essential to better understand normal cell behavior and disease states. Current assays to analyze cellular kinase activities can be tedious, nonhomogeneous, and not easily adaptable to HTS or suffer from generation of false hits due to fluorescence interference, signal quenching, or require special instruments for detection. To overcome these shortcomings, we developed a simple homogeneous assay platform to detect phosphorylation of specific endogenous proteins in cells. We took advantage of the NanoLuc Binary Technology (NanoBiT), a two-subunit system based on NanoLuc luciferase that was successfully demonstrated for protein-protein interaction (PPI) detection. We generated a detection system containing secondary antibody pairs linked to the two Nanoluc components, NanoBiT small and large fragments (11 aa peptide and 18 kDa). Cell lysate containing the phosphorylated protein is incubated with two primary antibodies that recognize separate epitopes on a single protein. These will bring NanoBiT secondary antibodies into proximity to form an active NanoLuc luciferase that makes light in proportion to the amount of target protein. When the primary antibody pair includes a phosphospecific antibody, the luminescence reflects the level of target protein phosphorylation. We tested this system by monitoring the activation of signaling pathways involved in cancer, immune and inflammatory responses (NF-κB, BTK and JAK/STAT). In very few steps we detected the expected biologic response of these pathways either by monitoring BTK autophosphorylation, assessing phosphorylation and degradation of IκB or phosphorylation of STAT3 upon activation of the cells with TNFα, or IL6, respectively. We also tested different small- or large-molecule inhibitors of these pathways or their corresponding node kinase (BTK, IKK, or JAKs) and obtained the expected pharmacology. The bioluminescent system presented here has many advantages including “Add and Read” format, no cell engineering required as the phosphorylation of endogenous substrate is detected in any cell type, and only a simple luminometer is required for detection. Our results demonstrate that this technology can be adapted to any signaling pathway analysis, allowing scientists to analyze signaling pathways of interest, study the kinase cellular activity and regulation or identify specific kinase or pathway inhibitors.
Citation Format: Hicham Zegzouti, Brian Hwang, Nidhi Nath, Said Goueli. Deciphering key cancer and inflammation signaling pathways with homogeneous bioluminescent cell-based kinase activity assays [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2018; 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr 3446.
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18
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Shin SS, Ko MC, Noh DH, Hwang B, Park Y, Park SL, Kim WJ, Moon SK. Morin inhibits PDGF-induced proliferation, migration, and invasion of vascular smooth muscle cells via modulating p27KIP1, AKT, and MMP-9 activities. Gen Physiol Biophys 2018; 37:633-645. [DOI: 10.4149/gpb_2018028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 08/07/2018] [Indexed: 11/08/2022]
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Abstract
PMMA/graphene composites with varying graphene content can control the modulus and thus the neutral plane of flexible displays while enhancing barrier properties.
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Affiliation(s)
- B. Hwang
- Graduate School of Energy Environment Water and Sustainability
- Korea Advanced Institute of Science & Technology
- Daejeon
- Republic of Korea
- BASF Electronic Materials R&D Center Asia
| | - S. Lim
- Graduate School of Energy Environment Water and Sustainability
- Korea Advanced Institute of Science & Technology
- Daejeon
- Republic of Korea
| | - M. Park
- Graduate School of Energy Environment Water and Sustainability
- Korea Advanced Institute of Science & Technology
- Daejeon
- Republic of Korea
| | - S. M. Han
- Graduate School of Energy Environment Water and Sustainability
- Korea Advanced Institute of Science & Technology
- Daejeon
- Republic of Korea
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20
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Hwang B, Brozowski J, Liu Z, Lin L, Li N, Su M, Thomas N, Diaz L, Liu Z. 083 The loss function of BP180 Collagen type XVII in skin, leads to a mast cell dependent pro-inflammatory microenvironment which promotes melanoma progression. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.02.109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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21
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Yu CJ, Du JC, Chiou HC, Chung MY, Yang W, Chen YS, Fuh MR, Chien LC, Hwang B, Chen ML. Increased risk of attention-deficit/hyperactivity disorder associated with exposure to organophosphate pesticide in Taiwanese children. Andrology 2016; 4:695-705. [DOI: 10.1111/andr.12183] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Revised: 01/31/2016] [Accepted: 02/15/2016] [Indexed: 01/12/2023]
Affiliation(s)
- C.-J. Yu
- School of Medicine; Institute of Environmental and Occupational Health Sciences; National Yang Ming University; Taipei Taiwan
| | - J.-C. Du
- Department of Pediatrics; Taipei City Hospital; Taipei Taiwan
| | - H.-C. Chiou
- Department of Child and Adolescent Psychiatry; Taipei City Hospital; Taipei Taiwan
| | - M.-Y. Chung
- Department of Life Sciences and Institute of Genome Sciences; National Yang Ming University; Taipei Taiwan
| | - W. Yang
- Department of Pediatrics; Taipei City Hospital; Taipei Taiwan
| | - Y.-S. Chen
- Department of Psychiatry; Taipei Veterans General Hospital; Taipei Taiwan
| | - M.-R. Fuh
- Department of Chemistry; Soochow University; Taipei Taiwan
| | - L.-C. Chien
- School of Public Health; Taipei Medical University; Taipei Taiwan
| | - B. Hwang
- Department of Pediatrics; Taipei City Hospital; Taipei Taiwan
| | - M.-L. Chen
- School of Medicine; Institute of Environmental and Occupational Health Sciences; National Yang Ming University; Taipei Taiwan
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22
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Hwang B, Park M, Kim T, Han SM. Effect of RGO deposition on chemical and mechanical reliability of Ag nanowire flexible transparent electrode. RSC Adv 2016. [DOI: 10.1039/c6ra10338c] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The role of RGO in chemical and mechanical reliability was studied for Ag nanowire/RGO hybrid electrode. RGO deposition can be effective in reducing the oxidation while maintaining the superior mechanical reliability under cyclic bendings.
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Affiliation(s)
- B. Hwang
- Graduate School of Energy Environment Water and Sustainability
- Korea Advanced Institute of Science & Technology
- Daejeon
- Republic of Korea
- BASF Electronic Materials R&D Center Asia
| | - M. Park
- Graduate School of Energy Environment Water and Sustainability
- Korea Advanced Institute of Science & Technology
- Daejeon
- Republic of Korea
| | - T. Kim
- Graduate School of Energy Environment Water and Sustainability
- Korea Advanced Institute of Science & Technology
- Daejeon
- Republic of Korea
| | - S. M. Han
- Graduate School of Energy Environment Water and Sustainability
- Korea Advanced Institute of Science & Technology
- Daejeon
- Republic of Korea
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23
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Caplan JM, Sankey E, Gullotti D, Wang J, Westbroek E, Hwang B, Huang J. Contralateral approach for clipping of bilateral anterior circulation aneurysms. Neurosurg Focus 2015; 39 Video Suppl 1:V9. [PMID: 26132626 DOI: 10.3171/2015.7.focusvid.14599] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Patients with bilateral anterior circulation aneurysms present a management challenge. These lesions may be treated in a staged manner or alternatively, for select patients, a contralateral approach may be utilized to treat bilateral aneurysms with a single surgery. In this narrated video illustration, we present the case of a 57-year-old woman with incidentally discovered bilateral aneurysms (left middle cerebral artery [MCA], left anterior choroidal artery and right MCA). A contralateral approach through a left pterional craniotomy was performed formicrosurgical clipping of all three aneurysms. The techniques of pterional craniotomy, contralateral approach, microsurgical clipping and intraoperative angiography are reviewed. The authors are grateful to Wuyang Yang, M.D. for his assistance. The video can be found here: http://youtu.be/MlPIu3hQZkg.
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Affiliation(s)
- Justin M Caplan
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Eric Sankey
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - David Gullotti
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Joanna Wang
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Erick Westbroek
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Brian Hwang
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Judy Huang
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
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Shahgaldi K, Hegner T, Da Silva C, Fukuyama A, Takeuchi M, Uema A, Kado Y, Nagata Y, Hayashi A, Otani K, Fukuda S, Yoshitani H, Otsuji Y, Morhy S, Lianza A, Afonso T, Oliveira W, Tavares G, Rodrigues A, Vieira M, Warth A, Deutsch A, Fischer C, Tezynska-Oniszk I, Turska-Kmiec A, Kawalec W, Dangel J, Maruszewski B, Bokiniec R, Burczynski P, Borszewska-Kornacka K, Ziolkowska L, Zuk M, Troshina A, Dzhalilova D, Poteshkina N, Hamitov F, Warita S, Kawasaki M, Tanaka R, Yagasaki H, Minatoguchi S, Wanatabe T, Ono K, Noda T, Wanatabe S, Minatoguchi S, Angelis A, Ageli K, Vlachopoulos C, Felekos I, Ioakimidis N, Aznaouridis K, Vaina S, Abdelrasoul M, Tsiamis E, Stefanadis C, Cameli M, Sparla S, D'ascenzi F, Fineschi M, Favilli R, Pierli C, Henein M, Mondillo S, Lindqvist P, Tossavainen E, Gonzalez M, Soderberg S, Henein M, Holmgren A, Strachinaru M, Catez E, Jousten I, Pavel O, Janssen C, Morissens M, Chatzistamatiou E, Moustakas G, Memo G, Konstantinidis D, Mpampatzeva Vagena I, Manakos K, Traxanas K, Vergi N, Feretou A, Kallikazaros I, Tsai WC, Sun YT, Lee WH, Yang LT, Liu YW, Lee CH, Li WT, Mizariene V, Bieseviciene M, Karaliute R, Verseckaite R, Vaskelyte J, Lesauskaite V, Chatzistamatiou E, Mpampatseva Vagena I, Manakos K, Moustakas G, Konstantinidis D, Memo G, Mitsakis O, Kasakogias A, Syros P, Kallikazaros I, Hristova K, Cornelissen G, Singh R, Shiue I, Coisne D, Madjalian AM, Tchepkou C, Raud Raynier P, Degand B, Christiaens L, Baldenhofer G, Spethmann S, Dreger H, Sanad W, Baumann G, Stangl K, Stangl V, Knebel F, Azzaz S, Kacem S, Ouali S, Risos L, Dedobbeleer C, Unger P, Sinem Cakal S, Elif Eroglu E, Baydar O, Beytullah Cakal B, Mehmet Vefik Yazicioglu M, Mustafa Bulut M, Cihan Dundar C, Kursat Tigen K, Birol Ozkan B, Ali Metin Esen A, Tournoux F, Chequer R, Sroussi M, Hyafil F, Rouzet F, Leguludec D, Baum P, Stoebe S, Pfeiffer D, Hagendorff A, Fang F, Lau M, Zhang Q, Luo X, Wang X, Chen L, Yu C, Zaborska B, Smarz K, Makowska E, Kulakowski P, Budaj A, Bengrid TM, Zhao Y, Henein MY, Caminiti G, D'antoni V, Cardaci V, Conti V, Volterrani M, Warita S, Kawasaki M, Yagasaki H, Minatoguchi S, Nagaya M, Ono K, Noda T, Watanabe S, Houle H, Minatoguchi S, Gillebert TC, Chirinos JA, Claessens TC, Raja MW, De Buyzere ML, Segers P, Rietzschel ER, Kim K, Cha J, Chung H, Kim J, Yoon Y, Lee B, Hong B, Rim S, Kwon H, Choi E, Pyankov V, Aljaroudi W, Matta S, Al-Shaar L, Habib R, Gharzuddin W, Arnaout S, Skouri H, Jaber W, Abchee A, Bouzas Mosquera A, Peteiro J, Broullon F, Constanso Conde I, Bescos Galego H, Martinez Ruiz D, Yanez Wonenburger J, Vazquez Rodriguez J, Alvarez Garcia N, Castro Beiras A, Gunyeli E, Oliveira Da Silva C, Shahgaldi K, Manouras A, Winter R, Meimoun P, Abouth S, Martis S, Boulanger J, Elmkies F, Zemir H, Detienne J, Luycx-Bore A, Clerc J, Rodriguez Palomares JF, Gutierrez L, Maldonado G, Garcia G, Galuppo V, Gruosso D, Teixido G, Gonzalez Alujas M, Evangelista A, Garcia Dorado D, Rechcinski T, Wierzbowska-Drabik K, Wejner-Mik P, Szymanska B, Jerczynska H, Lipiec P, Kasprzak J, El-Touny K, El-Fawal S, Loutfi M, El-Sharkawy E, Ashour S, Boniotti C, Carminati M, Fusini L, Andreini D, Pontone G, Pepi M, Caiani E, Oryshchyn N, Kramer B, Hermann S, Liu D, Hu K, Ertl G, Weidemann F, Ancona F, Miyazaki S, Slavich M, Figini F, Latib A, Chieffo A, Montorfano M, Alfieri O, Colombo A, Agricola E, Nogueira M, Branco L, Rosa S, Portugal G, Galrinho A, Abreu J, Cacela D, Patricio L, Fragata J, Cruz Ferreira R, Igual Munoz B, Erdociain Perales M, Maceira Gonzalez A, Estornell Erill Jordi J, Donate Bertolin L, Vazquez Sanchez Alejandro A, Miro Palau Vicente V, Cervera Zamora A, Piquer Gil M, Montero Argudo A, Girgis HYA, Illatopa V, Cordova F, Espinoza D, Ortega J, Khan U, Islam A, Majumder A, Girgis HYA, Bayat F, Naghshbandi E, Naghshbandi E, Samiei N, Samiei N, Malev E, Omelchenko M, Vasina L, Zemtsovsky E, Piatkowski R, Kochanowski J, Budnik M, Scislo P, Opolski G, Kochanowski J, Piatkowski R, Scislo P, Budnik M, Marchel M, Opolski G, Abid L, Ben Kahla S, Abid D, Charfeddine S, Maaloul I, Ben Jmaa M, Kammoun S, Hashimoto G, Suzuki M, Yoshikawa H, Otsuka T, Isekame Y, Yamashita H, Kawase I, Ozaki S, Nakamura M, Sugi K, Benvenuto E, Leggio S, Buccheri S, Bonura S, Deste W, Tamburino C, Monte IP, Gripari P, Fusini L, Muratori M, Tamborini G, Ghulam Ali S, Bottari V, Cefalu' C, Bartorelli A, Agrifoglio M, Pepi M, Zambon E, Iorio A, Di Nora C, Abate E, Lo Giudice F, Di Lenarda A, Agostoni P, Sinagra G, Timoteo AT, Galrinho A, Moura Branco L, Rio P, Aguiar Rosa S, Oliveira M, Silva Cunha P, Leal A, Cruz Ferreira R, Zemanek D, Tomasov P, Belehrad M, Kostalova J, Kara T, Veselka J, Hassanein M, El Tahan S, El Sharkawy E, Shehata H, Yoon Y, Choi H, Seo H, Lee S, Kim H, Youn T, Kim Y, Sohn D, Choi G, Mielczarek M, Huttin O, Voilliot D, Sellal J, Manenti V, Carillo S, Olivier A, Venner C, Juilliere Y, Selton-Suty C, Butz T, Faber L, Brand M, Piper C, Wiemer M, Noelke J, Sasko B, Langer C, Horstkotte D, Trappe H, Maysou L, Tessonnier L, Jacquier A, Serratrice J, Copel C, Stoppa A, Seguier J, Saby L, Verschueren A, Habib G, Petroni R, Bencivenga S, Di Mauro M, Acitelli A, Cicconetti M, Romano S, Petroni A, Penco M, Maceira Gonzalez AM, Cosin-Sales J, Igual B, Sancho-Tello R, Ruvira J, Mayans J, Choi J, Kim S, Almeida A, Azevedo O, Amado J, Picarra B, Lima R, Cruz I, Pereira V, Marques N, Chatzistamatiou E, Konstantinidis D, Manakos K, Mpampatseva Vagena I, Moustakas G, Memo G, Mitsakis O, Kasakogias A, Syros P, Kallikazaros I, Cho E, Kim J, Hwang B, Kim D, Jang S, Jeon H, Cho J, Chatzistamatiou E, Konstantinidis D, Memo G, Mpapatzeva Vagena I, Moustakas G, Manakos K, Traxanas K, Vergi N, Feretou A, Kallikazaros I, Jedrzejewska I, Konopka M, Krol W, Swiatowiec A, Dluzniewski M, Braksator W, Sefri Noventi S, Sugiri S, Uddin I, Herminingsih S, Arif Nugroho M, Boedijitno S, Caro Codon J, Blazquez Bermejo Z, Valbuena Lopez SC, Lopez Fernandez T, Rodriguez Fraga O, Torrente Regidor M, Pena Conde L, Moreno Yanguela M, Buno Soto A, Lopez-Sendon JL, Stevanovic A, Dekleva M, Kim M, Kim S, Kim Y, Shim J, Park S, Park S, Kim Y, Shim W, Kozakova M, Muscelli E, Morizzo C, Casolaro A, Paterni M, Palombo C, Bayat F, Nazmdeh M, Naghshbandi E, Nateghi S, Tomaszewski A, Kutarski A, Brzozowski W, Tomaszewski M, Nakano E, Harada T, Takagi Y, Yamada M, Takano M, Furukawa T, Akashi Y, Lindqvist G, Henein M, Backman C, Gustafsson S, Morner S, Marinov R, Hristova K, Geirgiev S, Pechilkov D, Kaneva A, Katova T, Pilosoff V, Pena Pena M, Mesa Rubio D, Ruiz Ortin M, Delgado Ortega M, Romo Penas E, Pardo Gonzalez L, Rodriguez Diego S, Hidalgo Lesmes F, Pan Alvarez-Ossorio M, Suarez De Lezo Cruz-Conde J, Gospodinova M, Sarafov S, Guergelcheva V, Vladimirova L, Tournev I, Denchev S, Mozenska O, Segiet A, Rabczenko D, Kosior D, Gao S, Eliasson M, Polte C, Lagerstrand K, Bech-Hanssen O, Morosin M, Piazza R, Leonelli V, Leiballi E, Pecoraro R, Cinello M, Dell' Angela L, Cassin M, Sinagra G, Nicolosi G, Savu O, Carstea N, Stoica E, Macarie C, Moldovan H, Iliescu V, Chioncel O, Moral S, Gruosso D, Galuppo V, Teixido G, Rodriguez-Palomares J, Gutierrez L, Evangelista A, Jansen Klomp WW, Peelen L, Spanjersberg A, Brandon Bravo Bruinsma G, Van 'T Hof A, Laveau F, Hammoudi N, Helft G, Barthelemy O, Michel P, Petroni T, Djebbar M, Boubrit L, Le Feuvre C, Isnard R, Bandera F, Generati G, Pellegrino M, Alfonzetti E, Labate V, Villani S, Gaeta M, Guazzi M, Gabriels C, Lancellotti P, Van De Bruaene A, Voilliot D, De Meester P, Buys R, Delcroix M, Budts W, Cruz I, Stuart B, Caldeira D, Morgado G, Almeida A, Lopes L, Fazendas P, Joao I, Cotrim C, Pereira H, Weissler Snir A, Greenberg G, Shapira Y, Weisenberg D, Monakier D, Nevzorov R, Sagie A, Vaturi M, Bando M, Yamada H, Saijo Y, Takagawa Y, Sawada N, Hotchi J, Hayashi S, Hirata Y, Nishio S, Sata M, Jackson T, Sammut E, Siarkos M, Lee L, Carr-White G, Rajani R, Kapetanakis S, Ciobotaru V, Yagasaki H, Kawasaki M, Tanaka R, Minatoguchi S, Sato N, Amano K, Warita S, Ono K, Noda T, Minatoguchi S, Breithardt OA, Razavi H, Nabutovsky Y, Ryu K, Gaspar T, Kosiuk J, John S, Prinzen F, Hindricks G, Piorkowski C, Nemchyna O, Tovstukha V, Chikovani A, Golikova I, Lutai M, Nemes A, Kalapos A, Domsik P, Lengyel C, Orosz A, Forster T, Nordenfur T, Babic A, Giesecke A, Bulatovic I, Ripsweden J, Samset E, Winter R, Larsson M, Blazquez Bermejo Z, Lopez Fernandez T, Caro Codon J, Valbuena S, Caro Codon J, Mori Junco R, Moreno Yanguela M, Lopez-Sendon J, Pinto-Teixeira P, Branco L, Galrinho A, Oliveira M, Cunha P, Silva T, Rio P, Feliciano J, Nogueira-Silva M, Ferreira R, Shkolnik E, Vasyuk Y, Nesvetov V, Shkolnik L, Varlan G, Bajraktari G, Ronn F, Ibrahimi P, Jashari F, Jensen S, Henein M, Kang MK, Mun HS, Choi S, Cho JR, Han S, Lee N, Cho IJ, Heo R, Chang H, Shin S, Shim C, Hong G, Chung N. Poster session 3: Thursday 4 December 2014, 14:00-18:00 * Location: Poster area. Eur Heart J Cardiovasc Imaging 2014. [DOI: 10.1093/ehjci/jeu253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Garcia Martin A, Fernandez Golfin C, Salido Tahoces L, Fernandez Santos S, Jimenez Nacher J, Moya Mur J, Velasco Valdazo E, Hernandez Antolin R, Zamorano Gomez J, Veronesi F, Corsi C, Caiani E, Lamberti C, Tsang W, Holmgren C, Guo X, Bateman M, Iaizzo P, Vannier M, Lang R, Patel A, Adamayn K, Tumasyan LR, Chilingaryan A, Nasr G, Eleraki A, Farouk N, Axelsson A, Langhoff L, Jensen M, Vejlstrup N, Iversen K, Bundgaard H, Watanabe T, Iwai-Takano M, Attenhofer Jost CH, Pfyffer M, Seifert B, Scharf C, Candinas R, Medeiros-Domingo A, Chin JY, Yoon H, Vollbon W, Singbal Y, Rhodes K, Wahi S, Katova TM, Simova II, Hristova K, Kostova V, Pauncheva B, Bircan A, Sade L, Eroglu S, Pirat B, Okyay K, Bal U, Muderrisoglu H, Heggemann F, Buggisch H, Welzel G, Doesch C, Hansmann J, Schoenberg S, Borggrefe M, Wenz F, Papavassiliu T, Lohr F, Roussin I, Drakopoulou M, Rosen S, Sharma R, Prasad S, Lyon A, Carpenter J, Senior R, Breithardt OA, Razavi H, Arya A, Nabutovsky Y, Ryu K, Gaspar T, Kosiuk J, Eitel C, Hindricks G, Piorkowski C, Pires S, Nunes A, Cortez-Dias N, Belo A, Zimbarra Cabrita I, Sousa C, Pinto F, Baron T, Johansson K, Flachskampf F, Christersson C, Pires S, Cortez-Dias N, Nunes A, Belo A, Zimbarra Cabrita I, Sousa C, Pinto F, Santoro A, Federico Alvino F, Giovanni Antonelli G, Raffaella De Vito R, Roberta Molle R, Sergio Mondillo S, Gustafsson M, Alehagen U, Johansson P, Tsukishiro Y, Onishi T, Chimura M, Yamada S, Taniguchi Y, Yasaka Y, Kawai H, Souza JRM, Zacharias LGT, Pithon KR, Ozahata TM, Cliquet AJ, Blotta MH, Nadruz WJ, Fabiani I, Conte L, Cuono C, Liga R, Giannini C, Barletta V, Nardi C, Delle Donne M, Palagi C, Di Bello V, Glaveckaite S, Valeviciene N, Palionis D, Laucevicius A, Hristova K, Bogdanova V, Ferferieva V, Shiue I, Castellon X, Boles U, Rakhit R, Shiu MF, Gilbert T, Papachristidis A, Henein MY, Westholm C, Johnson J, Jernberg T, Winter R, Ghosh Dastidar A, Augustine D, Cengarle M, Mcalindon E, Bucciarelli-Ducci C, Nightingale A, Onishi T, Watanabe T, Fujita M, Mizukami Y, Sakata Y, Nakatani S, Nanto S, Uematsu M, Saraste A, Luotolahti M, Varis A, Vasankari T, Tunturi S, Taittonen M, Rautakorpi P, Airaksinen J, Ukkonen H, Knuuti J, Boshchenko A, Vrublevsky A, Karpov R, Yoshikawa H, Suzuki M, Hashimoto G, Kusunose Y, Otsuka T, Nakamura M, Sugi K, Rosner S, Orban M, Lesevic H, Karl M, Hadamitzky M, Sonne C, Panaro A, Martinez F, Huguet M, Moral S, Palet J, Oller G, Cuso I, Jornet A, Rodriguez Palomares J, Evangelista A, Stoebe S, Tarr A, Pfeiffer D, Hagendorff A, Gilmanov D, Baroni M, Cerone E, Galli E, Berti S, Glauber M, Soesanto A, Yuniadi Y, Mansyur M, Kusmana D, Venkateshvaran A, Dash PK, Sola S, Govind SC, Shahgaldi K, Winter R, Brodin LA, Manouras A, Dokainish H, Sadreddini M, Nieuwlaat R, Lonn E, Healey J, Nguyen V, Cimadevilla C, Dreyfus J, Codogno I, Vahanian A, Messika-Zeitoun D, Lim YJ, Kawamura A, Kawano S, Polte C, Gao S, Lagerstrand K, Cederbom U, Bech-Hanssen O, Baum J, Beeres F, Van Hall S, Boering Y, Zeus T, Kehmeier E, Kelm M, Balzer J, Della Mattia A, Pinamonti B, Abate E, Nicolosi G, Proclemer A, Bassetti M, Luzzati R, Sinagra G, Hlubocka Z, Jiratova K, Dostalova G, Hlubocky J, Dohnalova A, Linhart A, Palecek T, Sonne C, Lesevic H, Karl M, Rosner S, Hadamitzky M, Ott I, Malev E, Reeva S, Zemtsovsky E, Igual Munoz B, Alonso Fernandez Pau P, Miro Palau Vicente V, Maceira Gonzalez Alicia A, Estornell Erill J, Andres La Huerta A, Donate Bertolin L, Valera Martinez F, Salvador Sanz Antonio A, Montero Argudo Anastasio A, Nemes A, Kalapos A, Domsik P, Chadaide S, Sepp R, Forster T, Onaindia J, Arana X, Cacicedo A, Velasco S, Rodriguez I, Capelastegui A, Sadaba M, Gonzalez J, Salcedo A, Laraudogoitia E, Archontakis S, Gatzoulis K, Vlasseros I, Arsenos P, Tsiachris D, Vouliotis A, Sideris S, Karistinos G, Kalikazaros I, Stefanadis C, Ancona R, Comenale Pinto S, Caso P, Coppola M, Arenga F, Cavallaro C, Vecchione F, D'onofrio A, Calabro R, Correia CE, Moreira D, Cabral C, Santos J, Cardoso J, Igual Munoz B, Maceira Gonzalez A, Estornell Erill Jordi J, Jimenez Carreno R, Arnau Vives M, Monmeneu Menadas J, Domingo-Valero D, Sanchez Fernandez E, Montero Argudo Anastasio A, Zorio Grima E, Cincin A, Tigen K, Karaahmet T, Dundar C, Sunbul M, Guler A, Bulut M, Basaran Y, Mordi I, Carrick D, Berry C, Tzemos N, Cruz I, Ferreira A, Rocha Lopes L, Joao I, Almeida A, Fazendas P, Cotrim C, Pereira H, Ochoa JP, Fernandez A, Filipuzzi J, Casabe J, Salmo J, Vaisbuj F, Ganum G, Di Nunzio H, Veron L, Guevara E, Salemi V, Nerbass F, Portilho N, Ferreira Filho J, Pedrosa R, Arteaga-Fernandez E, Mady C, Drager L, Lorenzi-Filho G, Marques J, Almeida AMG, Menezes M, Silva G, Placido R, Amaro C, Brito D, Diogo A, Lourenco MR, Azevedo O, Moutinho J, Nogueira I, Machado I, Portugues J, Quelhas I, Lourenco A, Calore C, Muraru D, Melacini P, Badano L, Mihaila S, Puma L, Peluso D, Casablanca S, Ortile A, Iliceto S, Kang MK, Yu S, Park J, Kim S, Park T, Mun HS, C S, Cho SR, Han S, Lee N, Khalifa EA, Hamodraka E, Kallistratos M, Zacharopoulou I, Kouremenos N, Mavropoulos D, Tsoukas A, Kontogiannis N, Papanikolaou N, Tsoukanas K, Manolis A, Villagraz Tecedor L, Jimenez Lopez Guarch C, Alonso Chaterina S, Blazquez Arrollo L, Lopez Melgar B, Veitia Sarmiento A, Mayordomo Gomez S, Escribano Subias M, Lichodziejewska B, Kurnicka K, Goliszek S, Dzikowska Diduch O, Kostrubiec M, Krupa M, Grudzka K, Ciurzynski M, Palczewski P, Pruszczyk P, Sakata K, Ishiguro M, Kimura G, Uesugo Y, Takemoto K, Minamishima T, Futuya M, Matsue S, Satoh T, Yoshino H, Signorello M, Gianturco L, Colombo C, Stella D, Atzeni F, Boccassini L, Sarzi-Puttini P, Turiel M, Kinova E, Deliiska B, Krivoshiev S, Goudev A, De Stefano F, Santoro C, Buonauro A, Schiano-Lomoriello V, Muscariello R, De Palma D, Galderisi M, Ranganadha Babu B, Chidambaram S, Sangareddi V, Dhandapani V, Ravi M, Meenakshi K, Muthukumar D, Swaminathan N, Ravishankar G, Bruno RM, Giardini G, Catizzo B, Brustia R, Malacrida S, Armenia S, Cauchy E, Pratali L, Cesana F, Alloni M, Vallerio P, De Chiara B, Musca F, Belli O, Ricotta R, Siena S, Moreo A, Giannattasio C, Magnino C, Omede' P, Avenatti E, Presutti D, Sabia L, Moretti C, Bucca C, Gaita F, Veglio F, Milan A, Eichhorn J, Springer W, Helling A, Alarajab A, Loukanov T, Ikeda M, Kijima Y, Akagi T, Toh N, Oe H, Nakagawa K, Tanabe Y, Watanabe N, Ito H, Hascoet S, Hadeed K, Marchal P, Bennadji A, Peyre M, Dulac Y, Heitz F, Alacoque X, Chausseray G, Acar P, Kong W, Ling L, Yip J, Poh K, Vassiliou V, Rekhraj S, Hoole S, Watkinson O, Kydd A, Boyd J, Mcnab D, Densem C, Shapiro L, Rana B, Potpara T, Djikic D, Polovina M, Marcetic Z, Peric V, Lip G, Gaudron P, Niemann M, Herrmann S, Hu K, Strotmann J, Beer M, Bijnens B, Liu D, Ertl G, Weidemann F, Peric V, Jovanovic A, Djikic D, Otasevic P, Kochanowski J, Piatkowski R, Scislo P, Grabowski M, Marchel M, Opolski G, Bandera F, Guazzi M, Arena R, Corra U, Ghio S, Forfia P, Rossi A, Dini F, Cahalin L, Temporelli L, Rallidis L, Tsangaris I, Makavos G, Anthi A, Pappas A, Orfanos S, Lekakis J, Anastasiou-Nana M, Kuznetsov VA, Krinochkin DV, Yaroslavskaya EI, Zaharova EH, Pushkarev GS, Mizia-Stec K, Wita K, Mizia M, Loboz-Grudzien K, Szwed H, Kowalik I, Kukulski T, Gosciniak P, Kasprzak J, Plonska-Gosciniak E, Cimino S, Pedrizzetti G, Tonti G, Cicogna F, Petronilli V, De Luca L, Iacoboni C, Agati L, Hoffmann R, Barletta G, Von Bardeleben S, Kasprzak J, Greis C, Vanoverschelde J, Becher H, Galrinho A, Moura Branco L, Fiarresga A, Cacela D, Ramos R, Cruz Ferreira R, Van Den Oord S, Akkus Z, Bosch J, Renaud G, Sijbrands E, Verhagen H, Van Der Lugt A, Van Der Steen A, Schinkel A, Mordi I, Tzemos N, Stanton T, Delgado D, Yu E, Drakopoulou M, Gonzalez-Gonzalez A, Karonis T, Roussin I, Babu-Narayan S, Swan L, Senior R, Li W, Parisi V, Pagano G, Pellegrino T, Femminella G, De Lucia C, Formisano R, Cuocolo A, Perrone Filardi P, Leosco D, Rengo G, Unlu S, Farsalinos K, Amelot K, Daraban A, Ciarka A, Delcroix M, Voigt J, Miskovic A, Poerner T, Goebel B, Stiller C, Moritz A, Sakata K, Uesugo Y, Kimura G, Ishiguro M, Takemoto K, Minamishima T, Futuya M, Satoh T, Yoshino H, Miyoshi T, Tanaka H, Kaneko A, Matsumoto K, Imanishi J, Motoji Y, Mochizuki Y, Minami H, Kawai H, Hirata K, Wutthimanop A, See O, Vathesathokit P, Yamwong S, Sritara P, Rosner A, Kildal A, Stenberg T, Myrmel T, How O, Capriolo M, Frea S, Giustetto C, Scrocco C, Benedetto S, Grosso Marra W, Morello M, Gaita F, Garcia-Gonzalez P, Cozar-Santiago P, Chacon-Hernandez N, Ferrando-Beltran M, Fabregat-Andres O, De La Espriella-Juan R, Fontane-Martinez C, Jurado-Sanchez R, Morell-Cabedo S, Ridocci-Soriano F, Mihaila S, Piasentini E, Muraru D, Peluso D, Casablanca S, Puma L, Naso P, Iliceto S, Vinereanu D, Badano L, Tarzia P, Villano A, Figliozzi S, Russo G, Parrinello R, Lamendola P, Sestito A, Lanza G, Crea F, Sulemane S, Panoulas V, Bratsas A, Frankel A, Nihoyannopoulos P, Dores H, Andrade M, Almeida M, Goncalves P, Branco P, Gaspar A, Gomes A, Horta E, Carvalho M, Mendes M, Yue W, Li X, Chen Y, Luo Y, Gu P, Yiu K, Siu C, Tse H, Cho E, Lee S, Hwang B, Kim D, Jang S, Jeon H, Youn H, Kim J. Poster session Thursday 12 December - PM: 12/12/2013, 14:00-18:00 * Location: Poster area. Eur Heart J Cardiovasc Imaging 2013. [DOI: 10.1093/ehjci/jet204] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Appelboom G, Piazza M, Bruce S, Hwang B, Badjatia N, Drogba L, De Witte O, Connolly S. A Common Single Nucleotide Polymorphism Within Hemostasis Pathways Is Associated with Hematoma Expansion After Intracerebral Hemorrhage. World Neurosurg 2013. [DOI: 10.1016/j.wneu.2013.07.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Goodwin CR, Yang JX, Bettegowda C, Hwang B, James C, Biser A, Raza S, Bender M, Carson B, Lee JYK, Lim M. Glycerol rhizotomy via a retrosigmoid approach as an alternative treatment for trigeminal neuralgia. Clin Neurol Neurosurg 2013; 115:2454-6. [PMID: 24161889 DOI: 10.1016/j.clineuro.2013.09.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2013] [Revised: 09/03/2013] [Accepted: 09/14/2013] [Indexed: 11/29/2022]
Abstract
OBJECTIVES Trigeminal neuralgia is a sensory nerve disorder characterized by lancinating pain and treated most commonly with carbamazepine, rhizotomy treatment, or open surgical management with microvascular decompression. We describe a novel technique to complement surgical treatment for trigeminal neuralgia via direct injection of the trigeminal nerve with glycerin in the cisternal portion of the nerve. PATIENTS AND METHODS We performed a retrospective analysis of patients who received standard microvascular decompression and injection of glycerin to the inferior third of the cisternal portion of the nerve anterior to the root entry zone with lack of a compressive vessel on MRI as the primary indication. Fourteen patients were identified and demographic information, post-operative course and complications were recorded. RESULTS There were eleven females and three males with an average age at time of surgery of 54.8 years. 100% of patients reported that their trigeminal pain was significantly improved following surgical intervention. Four out of fourteen patients reported a 50-80% decrease from the pre-surgery baseline pain at one month and three month follow up. One patient developed a CSF leak, and no surgical site infections or motor deficits were observed. CONCLUSION Intra-operative glycerin rhizotomy in conjunction with microvascular decompression can be used to safely treat patients suffering from trigeminal neuralgia.
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Affiliation(s)
- C Rory Goodwin
- The Johns Hopkins Hospital, Department of Neurosurgery, Baltimore, USA.
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Woodley DT, Wang X, Amir M, Hwang B, Remington J, Hou Y, Uitto J, Keene D, Chen M. Intravenously injected recombinant human type VII collagen homes to skin wounds and restores skin integrity of dystrophic epidermolysis bullosa. J Invest Dermatol 2013; 133:1910-3. [PMID: 23321924 PMCID: PMC3890237 DOI: 10.1038/jid.2013.10] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Affiliation(s)
- David T. Woodley
- Department of Dermatology, University of Southern California, Los Angeles, CA
| | - Xinyi Wang
- Department of Dermatology, University of Southern California, Los Angeles, CA
| | - Mahsa Amir
- Department of Dermatology, University of Southern California, Los Angeles, CA
| | - Brian Hwang
- Department of Dermatology, University of Southern California, Los Angeles, CA
| | - Jennifer Remington
- Department of Dermatology, University of Southern California, Los Angeles, CA
| | - Yingpin Hou
- Department of Dermatology, University of Southern California, Los Angeles, CA
| | - Jouni Uitto
- Department of Dermatology Cutaneous Biology, Jefferson Medical College, Philadelphia, PA
| | | | - Mei Chen
- Department of Dermatology, University of Southern California, Los Angeles, CA
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Wang X, Ghasri P, Amir M, Hwang B, Hou Y, Khilili M, Lin A, Keene D, Uitto J, Woodley DT, Chen M. Topical application of recombinant type VII collagen incorporates into the dermal-epidermal junction and promotes wound closure. Mol Ther 2013; 21:1335-44. [PMID: 23670575 PMCID: PMC3704128 DOI: 10.1038/mt.2013.87] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Accepted: 04/11/2013] [Indexed: 11/08/2022] Open
Abstract
Patients with recessive dystrophic epidermolysis bullosa (RDEB) have incurable skin fragility, blistering, and skin wounds due to mutations in the gene that codes for type VII collagen (C7) that mediates dermal-epidermal adherence in human skin. In this study, we evaluated if topically applied human recombinant C7 (rC7) could restore C7 at the dermal-epidermal junction (DEJ) and enhance wound healing. We found that rC7 applied topically onto murine skin wounds stably incorporated into the newly formed DEJ of healed wounds and accelerated wound closure by increasing re-epithelialization. Topical rC7 decreased the expression of fibrogenic transforming growth factor-β2 (TGF-β2) and increased the expression of anti-fibrogenic TGF-β3. These were accompanied by the reduced expression of connective tissue growth factor, fewer α smooth muscle actin (α-SMA)-positive myofibroblasts, and less deposition of collagen in the healed neodermis, consistent with less scar formation. In addition, using a mouse model in which skin from C7 knock out mice was grafted onto immunodeficient mice, we showed that applying rC7 onto RDEB grafts with wounds restored C7 and anchoring fibrils (AFs) at the DEJ of the grafts and corrected the dermal-epidermal separation. The topical application of rC7 may be useful for treating patients with RDEB and patients who have chronic skin wounds.
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Affiliation(s)
- Xinyi Wang
- Department of Dermatology, University of
Southern California, Los Angeles, California,
USA
| | - Pedram Ghasri
- Department of Dermatology, University of
Southern California, Los Angeles, California,
USA
| | - Mahsa Amir
- Department of Dermatology, University of
Southern California, Los Angeles, California,
USA
| | - Brian Hwang
- Department of Dermatology, University of
Southern California, Los Angeles, California,
USA
| | - Yingpin Hou
- Department of Dermatology, University of
Southern California, Los Angeles, California,
USA
| | - Michael Khilili
- Department of Dermatology, University of
Southern California, Los Angeles, California,
USA
| | - Andrew Lin
- Department of Dermatology, University of
Southern California, Los Angeles, California,
USA
| | - Douglas Keene
- Department of Molecular and Medical Genetics,
Shriners Hospital for Children, Portland, Oregon,
USA
| | - Jouni Uitto
- Department of Dermatology and Cutaneous
Biology, Jefferson Medical College, Philadelphia,
Pennsylvania, USA
| | - David T Woodley
- Department of Dermatology, University of
Southern California, Los Angeles, California,
USA
| | - Mei Chen
- Department of Dermatology, University of
Southern California, Los Angeles, California,
USA
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Glick AF, Song YS, Hwang B, Lillvis J, Zanzonico P, Fuchs C, Pearse RN, Szabo P, Weksler ME. Age matters: Young T lymphocytes offer better protection from myeloma proliferation. Immun Ageing 2013; 10:5. [PMID: 23419047 PMCID: PMC3602000 DOI: 10.1186/1742-4933-10-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Accepted: 02/12/2013] [Indexed: 12/18/2022]
Abstract
BACKGROUND The incidence and growth of cancer has been reported to increase with age and/or impaired T lymphocyte function. RESULTS Consistent with these observations, we found that a monoclonal serum immunoglobulin (mIgG2b), rarely detectable after the injection of 5T33 murine multiple myeloma (MMM) cells into 3-4 month old wild-type C57BL/6 mice was seen more frequently in 18-20 month old wild-type C57BL/6 mice and in 3-4 month old Rag1-deficient C57BL/6 mice. These observations were confirmed and extended using more sensitive assays such as quantitation of splenic mRNA specific for the canonical 5T33 monoclonal IgG2b produced by 5T33 myeloma cells and the most sensitive assay, photon-imaging of mice injected with 5T33 cells, stably transfected with fire-fly luciferase gene (5T33L cells), which emit photons after the injection of luciferin. Furthermore, the proliferation of 5T33L myeloma cells in Rag1-deficient C57BL/6 mice was greater in mice which also received spleen T cells from 18-20 month old C57BL/6 wild-type mice compared to mice which received splenic T cells from 3-4 month old C57BL/6 wild-type mice. Thus, immune reconstitution of C57BL/6 mice with splenic T cells from young wild-type mice offered greater protection from progressive growth of 5T33L myeloma cells than did reconstitution with splenic T cells from old mice. CONCLUSIONS Our findings support the hypothesis that age-associated changes in splenic T cell function contribute to the increased growth of 5T33 MMM cells in old compared to young C57BL/6 mice. Should similar processes occur in humans, increasing the anti-myeloma activity of T cells in old patients with multiple myeloma or transferring cryopreserved, young, autologous, T cells might benefit elderly patients with multiple myeloma.
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Affiliation(s)
- Alexander F Glick
- Department of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Yan S Song
- Department of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Brian Hwang
- Department of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - John Lillvis
- Department of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Pat Zanzonico
- Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Camil Fuchs
- Department of Statistics, Tel Aviv University, Tel Aviv, Israel
| | - Roger N Pearse
- Department of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Paul Szabo
- Department of Neurology, Weill Cornell Medical College, New York, NY, USA
| | - Marc E Weksler
- Department of Medicine, Weill Cornell Medical College, New York, NY, USA
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Appelboom G, Piazza M, Bruce SS, Zoller SD, Hwang B, Monahan A, Hwang RY, Kisslev S, Mayer S, Meyers PM, Badjatia N, Connolly ES. Variation in a locus linked to platelet aggregation phenotype predicts intraparenchymal hemorrhagic volume. Neurol Res 2012; 34:232-7. [PMID: 22449554 DOI: 10.1179/1743132811y.0000000080] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
OBJECTIVE Alteration in platelet aggregation has been shown to promote bleeding and affect outcome after intracerebral hemorrhage (ICH).We investigated the influence of genetic variants of platelet aggregation, and their effects on admission ICH volume and clinical outcome. METHODS Our prospective study analyzed selected candidate single-nucleotide polymorphisms (SNPs) previously associated with platelet aggregation phenotype in previous genome-wide association studies, with regards to outcome and ICH volume. Patients were assessed at the Columbia University Medical Center Neuro-Intensive Care Unit. Exclusion criteria included age <18 years, ICH following trauma, hemorrhagic transformation, or tumor, no consent for genetic analysis, or incomplete data. Radiological variables (location and volume of acute ICH, presence of intraventricular extension, midline shift, and hydrocephalus) and clinical variables (mortality and modified Rankin score at discharge) were prospectively recorded. RESULTS One hundred and twenty-two patients with spontaneous ICH between February 2009 and May 2011 diagnosed via clinical assessment and admission computed tomography scan were included. The median admission Glasgow coma scale score (GCS) was 11·5. Univariate predictors of mortality at discharge included systolic blood pressure, presence of intraventricular hemorrhage, anticoagulant use, and GCS, the only independent predictor of discharge mortality (P<0·001). Age, intraventricular hemorrhage, and GCS were associated with poor functional outcome; age (P = 0·001) and GCS (P<0·001) were significant in the multivariate model. Admission GCS (P<0·01), antiplatelet use, and rs342286 (PIK3CG; P = 0·04; R(2) = 0·247) had univariate associations with hematoma volume. DISCUSSION We identified SNP rs342286 as an independent predictor of admission hematoma volume. Our findings suggest that PIK3CG function, which is previously linked to this SNP and affects platelet aggregation, impacts the severity of the intraparenchymal bleed.
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Affiliation(s)
- Geoffrey Appelboom
- Cerebrovascular Laboratory Columbia University, Columbia University College of Physicians and Surgeons, New York, NY 10032, USA.
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Appelboom G, Piazza M, Han JE, Bruce SS, Hwang B, Monahan A, Hwang RY, Kisslev S, Mayer S, Meyers PM, Badjatia N, Connolly ES. von Willebrand factor genetic variant associated with hematoma expansion after intracerebral hemorrhage. J Stroke Cerebrovasc Dis 2012; 22:713-7. [PMID: 22244714 DOI: 10.1016/j.jstrokecerebrovasdis.2011.10.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2011] [Revised: 10/26/2011] [Accepted: 10/28/2011] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Hematoma expansion, the leading cause of neurologic deterioration after intracerebral hemorrhage (ICH), remains one of the few modifiable risk factors for poor outcome. In the present study, we explored whether common genetic variants within the hemostasis pathway were related to hematoma expansion during the acute period after ICH. METHODS Patients with spontaneous ICH who were admitted to the institutional Neuro-ICU between 2009 and 2011 were enrolled in the study, and clinical data were collected prospectively. Hematoma size was measured in patients admitted on or before postbleed day 2. Baseline models for hematoma growth were constructed using backwards stepwise logistic regression. Genotyping of single-nucleotide polymorphisms for 13 genes involved in hemostasis was performed, and the results were individually included in the above baseline models to test for independent association of hematoma expansion. RESULTS During the study period, 82 patients were enrolled in the study and had complete data. The mean age was 65.9 ± 14.9 years, and 38% were female. Only von Willebrand factor was associated with absolute and relative hematoma growth in univariate analysis (P < .001 and P = .007, respectively); von Willebrand factor genotype was independently predictive of relative hematoma growth but only approached significance for absolute hematoma growth (P = .002 and P = .097, respectively). CONCLUSIONS Our genomic analysis of various hemostatic factors identified von Willebrand factor as a potential predictor of hematoma expansion in patients with ICH. The identification of von Willebrand factor single-nucleotide polymorphisms may allow us to better identify patients who are at risk for hematoma enlargement and will benefit the most from treatment. The relationship of von Willebrand factor with regard to hematoma enlargement in a larger population warrants further study.
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Affiliation(s)
- Geoffrey Appelboom
- Cerebrovascular Laboratory, Columbia University College of Physicians and Surgeons, New York, New York 10032, USA.
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Hwang B, Rheey J, Fu SW, Berg PE. Abstract P4-06-15: BP1 Upregulates Twist and Induces EMT in Breast Cancer Cells. Cancer Res 2010. [DOI: 10.1158/0008-5472.sabcs10-p4-06-15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: We have cloned a gene, BP1, which is a member of the homeobox gene family of transcription factors. Our recent studies have shown that BP1 may play a role in breast cancer cell survival, aggressiveness and metastasis. BP1 protein (pBP1) is expressed in 80% of invasive ductal breast tumors, and is associated with estrogen receptor negativity and tumors of African American women, both associated with aggressive tumors. BP1 is also expressed in metastatic tumors, shown by immunostaining of 46 samples of inflammatory breast cancer; all cases were BP1 positive. Nine cases had metastasized, and all nine metastatic lymph nodes were BP1 positive. BP1 positive cells were observed in lymph channels and blood vessels. Here, we demonstrated BP1 induces the epithelial to mesenchymal transition (EMT), resulting in increased migratory ability. EMT, a process by which cancer cells lose their epithelial features and gain mesenchymal markers, enables tumor cells become more invasive, migratory and can lead to metastasis. Twist, a basic helix-loop-helix (bHLH) transcription factor which triggers EMT, is activated by BP1.
Materials and Methods: RNA levels of markers of EMT were verified by real-time PCR and their protein levels by Western blotting and, in some cases, by confocal microscopy. Chromatin immunoprecipitation (ChIP) was performed to verify the BP1 binding site on the Twist promoter. A scratch test was used to measure migratory ability. BP1 knockdown by siRNA transfection was also performed. Recombinant BP1 (rpBP1) was produced in E. coli.
Results: Increased expression levels of Twist were observed on microarrays after probing with RNA from MCF-7 cell lines overexpressing BP1. We demonstrated that BP1 can upregulate Twist expression in two different breast cancer cell lines, MCF-7 and Hs578T cells, by binding to the Twist promoter. BP1 upregulates mesenchymal marker expression and down-regulates epithelial marker expression, consistent with EMT. BP1 also promotes breast cancer cell migratory ability, shown by the scratch test. In addition, cells grown in medium supplemented with rpBP1 showed increased Twist expression and migration. Experiments evaluating the effects of siBP1 on EMT are underway.
Conclusions: BP1 stimulates Twist expression in MCF-7 and HS578T breast cancer cells, resulting in a more mesenchymal cell phenotype. We therefore hypothesize that BP1 induces EMT by upregulating Twist expression, and may result in metastasis. If BP1 is involved in EMT, it may be a good target for therapy.
Citation Information: Cancer Res 2010;70(24 Suppl):Abstract nr P4-06-15.
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Affiliation(s)
- B Hwang
- George Washington University, Washington DC
| | - J Rheey
- George Washington University, Washington DC
| | - SW Fu
- George Washington University, Washington DC
| | - PE. Berg
- George Washington University, Washington DC
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Moon S, Cha B, Kim W, Hwang B, Jho E. P132. Methylation by protein arginine methyltransferase1 augments stability of Axin. Differentiation 2010. [DOI: 10.1016/j.diff.2010.09.138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Castilla-LLorente C, Mielcarek M, Iwata M, Abrams V, Hwang B, Nash R, Torok-Storb B. In Vivo Modulation of T Cell and Monocyte Function Following Infusion of Mesenchymal Stromal Cells (MSC). Biol Blood Marrow Transplant 2009. [DOI: 10.1016/j.bbmt.2008.12.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Xu H, Lee H, Hwang B, Nam J, Kang H, Ahn J. Kinetics of microbial hydrogenation of free linoleic acid to conjugated linoleic acids. J Appl Microbiol 2008; 105:2239-47. [DOI: 10.1111/j.1365-2672.2008.03937.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Georges G, Lesnikova M, Hwang B, Abrams K, Nash R. 275: Graft Rejection Following Dog Leukocyte Antigen (DLA)-Identical Nonmyeloablative Hematopoietic Cell Transplantation (HCT) Results in Long-Term Increases in Host T Regulatory (Treg) Cells. Biol Blood Marrow Transplant 2008. [DOI: 10.1016/j.bbmt.2007.12.285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Fu YC, Chi CS, Lin NN, Cheng CC, Jan SL, Hwang B, Hsu SL, Gong CL, Chen YT, Chiu YT. Comparison of heart failure in children with enterovirus 71 rhombencephalitis and cats with norepinephrine cardiotoxicity. Pediatr Cardiol 2006; 27:577-84. [PMID: 16933070 DOI: 10.1007/s00246-005-0915-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The mechanism of heart failure in patients with enterovirus 71 rhombencephalitis (brain stem encephalitis) remains unknown. Our previous reports hypothesized that a catecholamine storm induced by rhombencephalitis may account for the heart failure. The aim of this study was to develop a novel feline model of norepinephrine cardiotoxicity and compare the resulting heart failure to that in children with enterovirus 71 rhombencephalitis. Nine of 75 children (12%) with enterovirus 71 rhombencephalitis (5 boys and 4 girls; age, 4-28 months; median age, 16 months) were complicated with left ventricular hypokinesia (ejection fraction, 31 +/- 9%). Six cats (weight, 3.03 +/- 0.64 kg) were administered intravenous norepinephrine 30 microg/kg/min for 3 hours. Echocardiography assessed the left ventricular diameter and function before and after the administration of norepinephrine. Pathology studies included hematoxylin and eosin stain and in situ terminal deoxyribonucleotidyl transferase-mediated dUTP nick end-labeling assay. In the feline model, norepinephrine induced significant left ventricular dilatation (end diastolic diameter from 1.18 +/- 0.19 to 1.62 +/- 0.22 cm, p = 0.001; endsystolic diameter from 0.54 +/- 0.09 to 1.36 +/- 0.32 cm, p = < 0.001) and hypokinesia (ejection fraction from 87.5 +/- 4.1 to 35.2 +/- 16.3%, p = 0.001). Heart specimens from 4 patients and six cats showed similar pathology findings, including myocardial hemorrhage, cardiomyocyte apoptosis, and coagulative myocytolysis, which is characterized by sarcoplasmic coagulation, granulation, vacuolization, myofibrillar waving, and disruption. Both groups showed no significant inflammatory reaction. In conclusion, heart failure in patients with enterovirus 71 rhombencephalitis is similar to that in cats with norepinephrine cardiotoxicity. Norepinephrine cardiotoxicity may play a role in the pathogenesis of heart failure in enterovirus 71 rhombencephalitis.
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Affiliation(s)
- Y-C Fu
- Department of Pediatrics, Taichung Veterans General Hospital, Taichung, 407 Taiwan, Republic of China
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Farivar AS, Yunusov MY, Chen P, Leone RJ, Madtes DK, Kuhr CS, Spector MR, Abrams K, Hwang B, Nash RA, Mulligan MS. Optimizing a canine survival model of orthotopic lung transplantation. Transplant Proc 2006; 38:1638-40. [PMID: 16797373 DOI: 10.1016/j.transproceed.2006.02.055] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2005] [Indexed: 11/30/2022]
Abstract
INTRODUCTION While acute models of orthotopic lung transplantation have been described in dogs, the technical considerations of developing a survival model in this species have not been elaborated. Herein, we describe optimization of a canine survival model of orthotopic lung transplantation. METHODS Protocols of orthotopic left lung transplantation and single lung ventilation were established in acute experiments (n=9). Four dogs, serving as controls, received autologous, orthotopic lung transplants. Allogeneic transplants were performed in 16 DLA-identical and 16 DLA-mismatched unrelated recipient dogs. Selective right lung ventilation was utilized in all animals. A Malecot tube was left in the pleural space connected to a Heimlich valve for up to 24 hours. To date, animals have been followed up to 24 months by chest radiography, pulmonary function tests, bronchoscopy with lavage, and open biopsies. RESULTS Long-term survival was achieved in 34/36 animals. Two recipients died intraoperatively secondary to cardiac arrest. All animals were extubated on the operating table, and in all cases the chest tube was removed within 24 hours. Major complications included thrombosis of the pulmonary artery and subcritical stenosis of bronchial anastamosis. One recipient underwent successful treatment of a small bowel intussusception. CONCLUSIONS We report our experience in developing a survival canine model of orthotopic single lung transplantation. While short-term survival following canine lung transplantation is achievable, we report particular considerations that facilitate animal comfort, early extubation, and lung reexpansion in the immediate postoperative period, further optimizing use of this species for experimental modeling of long-term complications after lung transplantation.
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Affiliation(s)
- A S Farivar
- University of Washington Medical Center, Division of Cardiothoracic Surgery, Seattle, Washington 98195, USA.
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Araki P, Wu H, Hwang B. Monitoring Emergency Department Volume data by Automating Sas-Generated Reports. Am J Epidemiol 2006. [DOI: 10.1093/aje/163.suppl_11.s48-d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Chung WT, Lee SH, Kim JD, Park YS, Hwang B, Lee SY, Lee HY. Effect of mycelial culture broth of Ganoderma lucidum on the growth characteristics of human cell lines. J Biosci Bioeng 2005; 92:550-5. [PMID: 16233144 DOI: 10.1263/jbb.92.550] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2001] [Accepted: 09/19/2001] [Indexed: 11/17/2022]
Abstract
Two types of purified samples, water-soluble (sample A; M. W, 1.2 x 10(6) dalton) and water-insoluble (sample C; M. W., 1.0 x 10(6) dalton) samples, were obtained through consecutive separation processes from the culture broth of Ganoderma lucidia mycelium. It was found that both samples from the culture broth were very effective in inhibiting the growth of several human cancer cell lines, having a 93-85% growth inhibition on Hep3B, AGS and A549 with the least cytotoxicity on the normal human lung cell line, WRL68 of less than 25% the highest supplementation concentration of 1.0 mg/l. In general, the sample C showed greater inhibition of cancer cell growth than the sample A. The same trend was also observed in antimutagenicity using the Chinese hamster ovary cell line (CHO test) or Salmonella typhimurium (Ames test). The CHO test showed that sample C had higher antimutagenicity on mutagens 4NQO or MMNG than sample A (approximately 40% vs approximately 25%). The percentage of antimutagenicity from the Ames test was lower than that from the CHO test, possibly due to the difference in the sensitivity of mutagens. The water-insoluble sample greatly enhanced the growth of the human T cell line (H9) up to 1 x 10(5) with sample supplementation at 1.0 mg/l concentration from 4.3 x 10(4) without sample supplementation as well as improved the secretion level of both IL-6 and TNF-alpha up to 100 pg/ml from approximately 40 pg/ml without sample supplementation. The kinetics of response to the immune cell growth was illustrated by the response time obtained when the sample concentration was increased. The water-insoluble sample can be used for effectively treating cancer in that it accelerated apoptosis of human carcinoma cells up to 70% compared to less than 50% for the control. The sample also increased the differentiation ratio of HL-60 cells up to 58% after four days of cultivation, compared to 18% in the case of no sample supplementation. These results can be used in implying that the insoluble part of G. lucidium mycelium culture broth must be related to controlling signal transduction, resulting in the regulation of cancer cell growth.
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Affiliation(s)
- W T Chung
- Division of Food and Biotechnology, Kangwon National University, Chunchon 200-701, Korea
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Abstract
The Amplatzer duct occluder (ADO) provides a safe and effective therapy for patients with moderate- to large-sized patent ductus arteriosus (PDA), but there have been few reports of transcatheter closure of very large PDAs in young children and infants. We report a successful transcatheter closure of a very large PDA, 10.5 mm in diameter at the narrowest point, with a 14/12-mm ADO. To our knowledge, this is the largest PDA ever closed by an interventional method in such a young child.
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Affiliation(s)
- S-L Jan
- Division of Pediatric Cardiology, Department of Pediatrics, Taichung Veterans General Hospital, Taichung, Taiwan.
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Abstract
BACKGROUND The causes of neonatal transient hypothyroidism (NTH) remain incompletely understood. Whether it is influenced by genetic background is rarely discussed and remains unproven. A defect in thyroid peroxidase is a common cause of dyshormonogenesis of the thyroid gland in Taiwanese, with a novel mutation (2268insT) present in nearly 90% of alleles studied. OBJECTIVE To determine if the presence of this common mutation is associated with NTH in Taiwan. METHODS A mismatched primer was designed and used for this specific 2268insT mutation to screen 1000 normal babies and 260 babies with confirmed NTH. RESULTS The carrier rate for 2268insT in normal babies (1/200) was significantly lower than in babies with NTH (1/13; p<0.0001). CONCLUSIONS The results strongly suggest that the presence of this thyroid peroxidase mutation contributes to the development of NTH. Likely pathogenetic explanations include the effect of the stress of extrauterine adaptation during labour on an immature pituitary-thyroid axis in genetically predisposed individuals, combined with environmental triggers such as iodine deficiency, perinatal iodine exposure, and/or goitrogen contamination.
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Affiliation(s)
- D-M Niu
- Department of Pediatrics, Taipei Veterans General Hospital, Taiwan National Yang-Ming University
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Kim OT, Kim MY, Hong MH, Ahn JC, Hwang B. Stimulation of asiaticoside accumulation in the whole plant cultures of Centella asiatica (L.) urban by elicitors. Plant Cell Rep 2004; 23:339-344. [PMID: 15316748 DOI: 10.1007/s00299-004-0826-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2003] [Revised: 05/25/2004] [Accepted: 05/26/2004] [Indexed: 05/24/2023]
Abstract
The effects of a number of different elicitors on asiaticoside production in whole plant cultures of Centella asiatica were studied, including yeast extract, CdCl(2), CuCl(2) and methyl jasmonate (MJ). Only MJ and yeast extract stimulated asiaticoside production--1.53 and 1.41-fold, respectively. Maximum asiaticoside production was achieved following treatment with 0.1 mM MJ (116.8 mg/l). The highest asiaticoside production (342.72 mg/l) was obtained after 36 days of elicitation in cultures treated with 0.1 mM MJ and 0.025 mg/l 1-phenyl-3-(1,2,3-thidiazol-5-yl)urea (TDZ). Interestingly, MJ not only stimulated the production of asiaticoside but also had an important role in the senescence of C. asiatica. Although asiaticoside content did not change when TDZ was added to medium containing an elicitor, TDZ did increase shoot growth of C. asiatica. We discuss the interactive roles of MJ and TDZ in secondary metabolic production and biomass in whole plants of C. asiatica.
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Affiliation(s)
- O T Kim
- Department of Biology, Chonnam National University, Gwangju, 500-757, South Korea
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Niu DM, Hwang B, Tiu CM, Tsai LP, Yen JL, Lee NC, Lin CY. Contributions of bone maturation measurements to the differential diagnosis of neonatal transient hypothyroidism versus dyshormonogenetic congenital hypothyroidism. Acta Paediatr 2004; 93:1301-6. [PMID: 15499948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
AIM To a) evaluate the contribution of bone maturation in the diagnosis of neonatal transient hypothyroidism versus dyshormonogenetic congenital hypothyroidism in full-term newborns, and b) use bone maturation to test the hypothesis that neonatal transient hypothyroidism is perinatal in onset. MATERIALS AND METHODS The study included 20 patients with dyshormonogenetic and 43 with transient hypothyroidism. Thyroid function and measurements of the distal femoral epiphysis area, obtained at the time of first confirmatory diagnosis, were compared between the two groups. The epiphysis area in two control groups with normal thyroid function was also measured and compared with that in patients with transient hypothyroidism, at age 1-3 d (control A), or at the age when normal thyroid function was confirmed (control B). RESULTS Mean epiphysis area was 0.04 cm2 in patients with dyshormonogenetic versus 0.22 cm2 in patients with transient hypothyroidism (p < 0.0001). An area <0.05 cm2 was limited to patients with dyshormonogenetic hypothyroidism. Conversely, a normal area (>0.2 cm2) was only observed in patients with transient hypothyroidism. Mean epiphysis areas in control A (0.20 cm2) and in patients with transient hypothyroidism were similar (p = 0.37), consistent with perinatal onset of transient hypothyroidism. Mean epiphysis area in control B (0.31 cm2) was significantly greater than in patients with transient hypothyroidism (p < 0.01). CONCLUSIONS A short duration of hypothyroidism can significantly delay bone maturation. Examination of bone maturation at initial confirmatory evaluation yields important information pertaining to congenital hypothyroidism, not only to predict intellectual development, but also to evaluate the risk of dyshormonogenetic hypothyroidism.
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Affiliation(s)
- D M Niu
- Department of Paediatrics, Veterans General Hospital-Taipei, Taipei, Taiwan
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Abstract
BACKGROUND Epidemics of enterovirus 71 infection have caused the death of many children throughout the world. Rhombencephalitis, brain stem encephalitis, and heart failure were present in all of the fatal cases. However, no evidence of myocarditis was noted in the heart specimens, and the mechanism of heart failure remains unknown. AIMS To characterise the presentation of cardiac complications in children with enterovirus rhombencephalitis and discuss its pathogenesis. METHODS Ninety one consecutive patients with enterovirus rhombencephalitis underwent echocardiography. Of these, 17 patients (nine male, eight female; median age 14 months, range 4-57 months) with left ventricular dysfunction were studied. RESULTS Tachycardia was noted in all patients and systemic hypertension in 12. Muscle-brain fraction of creatine kinase was >5% in 14 patients. Plasma norepinephrine and epinephrine levels were significantly raised in the three patients in whom these were analysed. Electrocardiographic abnormalities were noted in eight patients. Pulmonary oedema was complicated in 15 patients. The initial ejection fraction of the left ventricle was 22-58% (mean 37%, SD 11%). All patients deteriorated to hypotensive shock within 12 hours and 13 died. Heart specimens from seven patients showed no evidence of myocarditis, but significant coagulative myocytolysis, myofibrillar degeneration, and cardiomyocyte apoptosis were observed. CONCLUSIONS Acute heart failure was noted in 19% of patients with enterovirus rhombencephalitis, which had a fatality rate of 77%. It was not caused by myocarditis but possibly by neurogenic cardiac damage.
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Affiliation(s)
- Y C Fu
- Department of Pediatrics, Taichung Veterans General Hospital, Taichung, Taiwan
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Shim H, Hwang B, Yang ST. Separation of benzene, toluene, ethylbenzene, and xylenes by micellar electrokinetic capillary chromatography. Environ Technol 2004; 25:51-56. [PMID: 15027649 DOI: 10.1080/09593330409355437] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The use of sodium dodecyl sulfate, urea, beta-cyclodextrin, and methanol as additives to the electrophoretic medium containing a Na2HPO4-boric acid buffer in the micellar electrokinetic capillary chromatography of benzene, toluene, ethylbenzene, and three isomers of xylene (collectively known as BTEX) was investigated. The results showed that with the addition of sodium dodecyl sulfate only, higher selectivity and sensitivity and shorter migration time could be achieved, which consequently resulted in better separation of BTEX studied. For this buffer system, good linearity (R2>0.99) was found over the range of 5 to 500 microg ml(-1) for individual BTEX compound and separation time of less than 5 min for BTEX was possible.
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Affiliation(s)
- H Shim
- Department of Civil and Environmental Engineering, University of Macau, Macau
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Fu YC, Liu FY, Tsai SC, Hwang B, Chi CS. Poor agreement between dipyridamole-stress technetium-99m-tetrofosmin myocardial perfusion single photon emission computed tomography and two-dimensional echocardiography in Kawasaki disease. Int J Cardiol 2003; 90:57-61. [PMID: 12821220 DOI: 10.1016/s0167-5273(02)00525-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
To establish a noninvasive diagnostic method for early assessment of cardiac involvement in Kawasaki disease (KD), 28 children with KD were included in this study. Two-dimensional echocardiography (2D-Echo) to detect the aneurysms of coronary arteries (CA), as well as rest and dipyridamole-stress technetium-99m tetrofosmin (Tc-TF) myocardial perfusion single photon emission computed tomography (SPECT) to detect abnormal myocardial perfusion were performed in all of the 28 children with KD and to compare each other. The results showed that (1). 42.9% of cases had no aneurysm and 57.1% had significant aneurysms detected by 2D-Echo; (2). 42.9% of cases had normal perfusion and 57.1% of cases had abnormal myocardial perfusion assessed by Tc-TF myocardial perfusion SPECT; (3). 25.0% of cases showed both normal 2D-Echo and Tc-TF myocardial perfusion SPECT findings and 39.3% of cases showed both abnormal 2D-Echo and Tc-TF myocardial perfusion SPECT findings; and (4). there was poor agreement between 2D-Echo and Tc-TF myocardial perfusion SPECT findings (P>0.05). We concluded that poor agreement exists between aneurysms and abnormal myocardial perfusion detected by 2D-Echo and Tc-TF myocardial perfusion SPECT findings in patients with KD.
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Affiliation(s)
- Y C Fu
- Department of Pediatrics, Taichung Veterans General Hospital, 160, Section 3, Chung Kang Rd, Taichung 40705, Taiwan.
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Lee PC, Chen SA, Chiang CE, Tai CT, Yu WC, Hwang B. Clinical and electrophysiological characteristics in children with atrioventricular nodal reentrant tachycardia. Pediatr Cardiol 2003; 24:6-9. [PMID: 12574975 DOI: 10.1007/s00246-002-0145-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Atrioventricular (AV) nodal reentrant tachycardia is one of the most common supraventricular tachycardias in childhood. However, information about AV nodal reentrant tachycardia in childhood is limited, especially about the variant and multiple forms. The purpose of this retrospective study was to investigate the clinical and electrophysiological characteristics in pediatric patients with AV nodal reentrant tachycardia. Forty-eight pediatric patients with AV nodal reentrant tachycardia were included (ages 11-18 years; 25 males and 23 females). The age of onset and duration of symptoms were significantly younger and shorter in pediatric patients, respectively. A higher incidence of antegrade dual AV nodal pathways was found in adult patients than pediatric patients (72.9 vs 52.1% p = 0.003). Both antegrade and retrograde slow pathway functions were better in pediatric than adult patients. There was no significant difference between children and adults in the occurrence of variant and multiple forms of AV nodal reentrant tachycardia. This study demonstrated that pediatric patients have different electrophysiologic characteristics from those of adult patients.
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Affiliation(s)
- P C Lee
- Department of Pediatrics, Taipei Veterans General Hospital and National Yang-Ming University, Taipei, Taiwan
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