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Karmacharya P, Crowson CS, Poudel D, Davis JM, Ogdie A, Liew J, Ward M, Ishimori M, Weisman M, Brown M, Rahbar M, Hwang M, Reveille JD, Gensler LS. OP0154 COMORBIDITY CLUSTERS IN ANKYLOSING SPONDYLITIS AND THEIR ASSOCIATION WITH DISEASE ACTIVITY AND FUNCTIONAL IMPAIRMENT: DATA FROM THE PSOAS COHORT. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.5101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundComorbidities in ankylosing spondylitis (AS) occur more frequently than in the general population and are associated with higher morbidity and mortality. Some comorbidities may occur together, making one more likely in the presence of another, and different combinations of comorbidities may have differential considerations for AS management and outcomes.ObjectivesTo examine the association of baseline comorbidities with disease activity and functional status in AS.MethodsWe used baseline data from the Prospective Study Of Ankylosing Spondylitis (PSOAS) cohort, a multicenter, prospective cohort from five centers (4 in the US, 1 in Australia). AS patients ≥ 18 years fulfilling mNY criteria for AS (2002-20) were included. Patient-reported AS comorbidities (N=28) and extra-musculoskeletal manifestations (EMMs, N=2) within 3 years of enrollment (prespecified on the baseline case-report form) and only those occurring in ≥1% were included. Undocumented comorbidities were assumed to be absent if missing in <15% of patients, and those missing in >50% of patients were excluded. Comorbidity clusters were identified using K-median clustering. The optimal number of clusters was determined using scree plot of the sum of squared errors and “elbow” on the graph line. Baseline characteristics of the clusters were compared, and associations of with disease activity and functional status measures (primary outcomes: ASDAS-CRP and BASFI) were examined using linear regression adjusted for age and sex.ResultsThere were 1,270 AS patients included with a mean age of 44.6 ±14.3 years, 74.4% males, and 81.2% whites. Mean AS symptom duration was 20.6±5.6 years, 81.6% HLA-B27 positive, and CRP elevated in 27.5% of patients at baseline. Depression was the most prevalent comorbidity (31.4%) followed by hypertension (26.1%); uveitis was the most common EMM (30.4%). The five clusters identified included depression (27%), no comorbidities (22%), hypertension (21%), uveitis (20%), and asthma/low bone mass (10%) (Figure 1). The cluster with no comorbidities was significantly younger, with lower symptom duration (p<0.001). Females had higher odds of being in the depression (OR=2.00, 95% CI 1.38- 2.90) and uveitis (OR=2.09, 95% CI 1.41-3.11) clusters compared to the cluster with no comorbidities. The number of comorbidities and clusters with depression and hypertension were significantly associated with worse disease activity and functional status (Table 1).Table 1.Age and sex adjusted associations between comorbidity clusters, compared to cluster 3, and baseline disease activity/ functional status measures in ankylosing spondylitis based on Linear regression models.Cluster 1 (depression)Cluster 3 (hypertension)Cluster 4 (uveitis)Cluster 5 (asthma, low bone mass)OutcomesCoef (95% CI)Coef (95% CI)Coef (95% CI)Coef (95% CI)ASDAS-CRP0.98 (0.78-1.18)0.43 (0.18-0.68)0.04 (-0.19-0.27)0.16 (-0.12-0.44)BASFI (0-10)1.92 (1.51-2.34)1.00 (0.53-1.48)-0.03 (-0.49-0.42)0.64 (0.076-1.20)Enthesitis count1.17 (0.73-1.61)0.73 (0.19-1.26)0.18 (-0.32-0.68)0.48 (-0.13-1.08)Swollen joint count (0-44)0.27 (-0.08-0.62)0.43 (-0.01-0.86)0.31 (-0.09-0.71)-0.95 (-0.58-0.39)Tender joint count (0-46)1.24 (0.59-1.88)0.44 (-0.34-1.23)0.56 (-0.18-1.29)0.34 (-0.55-1.23)BASDAI (0-10)2.30 (1.88-2.71)0.88 (0.36-1.40)0.30 (-0.17-0.78)0.61 (0.03-1.19)Patient Global (0-10)2.25 (1.82-2.68)0.76 (0.21-1.30)-0.22 (-0.71-0.27)0.29 (-0.31-0.89)Patient Pain (0-10)2.45 (1.95-2.94)1.00 (0.37-1.62)0.19 (-0.38-0.75)0.16 (-0.54-0.85)Spinal pain (0-10)2.40 (1.89-2.91)1.05 (0.41-1.70)0.43 (-0.16-1.01)0.76 (0.04-1.47)Figure 1.Comorbidity clusters in PSOAS cohort at baselineConclusionDistinct comorbidity clusters were identified in AS patients in the PSOAS cohort. In addition to the number of comorbidities, the type of comorbidity seems to be important. Depression and hypertension clusters seem to be associated with worse disease activity and function.Disclosure of InterestsParas Karmacharya: None declared, Cynthia S. Crowson: None declared, Dilli Poudel: None declared, John M Davis III Consultant of: Dr. Davis has received consulting fees and/or honoraria from AbbVie and Sanofi-Genzyme (less than $10,000 each), Grant/research support from: Dr. Davis has received research support from Pfizer., Alexis Ogdie Consultant of: Dr. Ogdie has served as a consultant for AbbVie, Amgen, BMS, Celgene, Corrona, Gilead, Janssen, Lilly, Novartis, Pfizer, and UCB (less than 10,000 each), Grant/research support from: Dr. Ogdie has received grants from Novartis and Pfizer to Penn and from Amgen to Forward (grants more than 10,000)., Jean Liew Grant/research support from: Dr. Liew received grant/research support from Pfizer (> $10,000), Michael Ward: None declared, Mariko Ishimori: None declared, Michael Weisman Consultant of: Dr. Weisman received consulting fees for Novartis, UCB, Gilead, and GSK (< $10,000)., Matthew Brown: None declared, Mohammad Rahbar: None declared, Mark Hwang: None declared, John D Reveille Consultant of: JDR received consulting fees for UCB (< $10,000), Grant/research support from: Dr. Reveille received research support from Lilly and Janssen unrelated to this work., Lianne S. Gensler Consultant of: Dr. Gensler has received consulting fees for AbbVie, Eli Lilly, GSK, Gilead, Pfizer (< $10,000)., Grant/research support from: Dr. Gensler received grant/research support from UCB and Novartis (> $10,000).
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Even C, Goldberg S, Siu L, Planchard D, Hwang M, Chen CK, He J, Song X, Zhou D, Doake R, Krug L, Peters S. 162P Population pharmacokinetic modeling of tremelimumab in patients (pts) with advanced solid tumors. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.10.181] [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: 11/28/2022] Open
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Hwang M, Weisman M, Gensler LS, Tahanan A, Ishimori M, Hunter T, Bolce R, Lisse J, Rahbar M, Shan M, Reveille JD. POS0904 FACTORS ASSOCIATED WITH SWITCHING FROM ONE ANTI-TNF AGENT TO ANOTHER ANTI-TNF, OR IL17 AGENT IN PATIENT WITH ANKYLOSING SPONDYLITIS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:A recent study examining Commercial Claims Insurance database found that many patients with ankylosing spondylitis (AS) do not remain on their initial TNF inhibitor two years after initiation, particularly women and those taking opioids.Objectives:To examine factors associated with switching from one TNF inhibitor (i)agent to either another TNFi, IL-17i or JAKi over time (at <2years and >2 years) in a longitudinal cohort of AS patients.Methods:Patients enrolled in the Prospective Study of Outcomes in AS (PSOAS), an observational longitudinal study of predictors of AS severity operative since 2002-2020 including over 1250 patients meeting modified New York criteria. Data collected included age, gender, ethnicity, HLA-B27 status, disease activity (BASDAI or ASDAS), erythocyte sedimentation rate (ESR), C-reactive protein (CRP), disease severity,(functional (BASFI) or radiographic (mSASSS)), comorbidities, smoking, exercise, disease duration, depression (either by self report or by the Center for Epidemiologic Studies Depression Scale (CES-D) and other medication usage (NSAIDs, including the NSAID index, nonbiologic DMARDs, opioids, anti-depressants, anxiolytics and hypnotics). Logistic regression models were built to identify clinical and sociodemographic characterstics associated with medication switching to another TNFi, IL-17i, or other biologic therapy (another TNFi, Il-17i, or JAKi) within 2 years and after 2 years of initiation).Results:Of those patients in PSOAS who had at least two years of follow-up, 496 were prescribed anti-TNF, 34 anti-IL-17 and 3 anti-JAK agents. According to the multinomial logistic regression analysis, patients who switched from their original TNFito another TNFi, IL-17i or JAKi within two years after initiating their original TNFi were more likely to be older, have higher baseline subjective disease activity (BASDAI), less radiographic severity by MSASSS, exercise > 120 minutes/week and less likely to be currently smoking. Patients who switched after two years were less likely be depressed, had shorter disease duration, had greater subjective disease activity, were more likely to be exercising > 120 minutes/week, and had more comorbidities.Conclusion:Different factors were encountered in AS patients who switched from their initial TNFi to another TNFi, IL-17i or JAKi within 2 years versus after 2 years of treatment.Table 1.Factors Associated With Switching From One TNFi To A Second TNFi or IL-17i or JAKi Before or After Two Years Based On Multinomial Logistic Regression Model (N=496 Patients)VariableSwitched within 2 years vs. not switchedp-value*Switched after 2 years vs. not switchedp-value*Gender (Male vs. Female)0.99(0.637, 1.549)0.980.95 (0.528, 1.719)0.87HLA-B27_(+ vs. -)0.99 (0.639, 1.523)0.950.66 (0.365, 1.192)0.17Depression (CESD≥ 16 or self-report)(Yes vs. No)0.99 (0.676, 1.445)0.950.35 (0.182, 0.672)0.002Disease duration at baseline (≥20 vs. <20 years)0.72 (0.485, 1.062)0.100.27 (0.146, 0.491)<0.001Age at baseline (≥40 vs. <40) (years)2.00 (1.291, 3.101)0.0021.23 (0.693, 2.193)0.48CRP (≥0.8 vs. <0.8)1.94 (1.230, 3.056)0.0040.90 (0.454, 1.789)0.77BASFI (≥40 vs. <40)1.34 0.852, 2.118)0.200.87 (0.450, 1.688)0.68BASDAI (≥4 vs. <4)1.73 (1.064, 2.797)0.032.31 (1.202, 4.427)0.01NSAID index (≥50 vs. <50)1.32 (0.822, 2.128)0.250.83 (0.437, 1.586)0.58NSAIDs used (Yes vs. No)0.84 (0.534, 1.309)0.430.85 (0.479, 1.510)0.58Exercise (≥120 vs. <120) (minutes/week)1.95 (1.396, 2.731)<0.0011.66(1.057, 2.613)0.03ASDAS (≥3 vs. <3)0.78 (0.454, 1.356)0.391.07 (0.478, 2.399)0.87Number of comorbidities (≥2 vs. <2)1.40 (0.997, 1.951)0.051.63 (1.029, 2.575)0.04mSASSS (≥4, vs. <4)0.63 (0.421, 0.957)0.030.81(0.474, 1.392)0.03Current smoker (Yes vs No)0.69 (0.385, 1.225)<0.0010.79 (0.297, 2.076)0.20*p-values calculated based on multinomial logistic regression model when switching is defined as being prescribed a second TNFi or taking IL-17i or JAKi before or after 2 years from first TNFi initiationDisclosure of Interests:Mark Hwang Consultant of: UCB, Novartis, Michael Weisman Consultant of: Novartis, GSK, UCB, Lilly, Lianne S. Gensler Consultant of: AbbVie, GlaxoSmithKline, Eli Lilly, Novartis, Pfizer, UCB Pharma, Amirali Tahanan: None declared, Mariko Ishimori: None declared, Theresa Hunter Employee of: Eli Lilly, Rebecca Bolce Employee of: Eli Lilly, Jeffrey Lisse Employee of: Eli Lilly, Mohammad Rahbar: None declared, Minyang Shan Employee of: Eli Lilly, John D Reveille Consultant of: UCB, Grant/research support from: Eli Lilly
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Zheng Q, Freeman CW, Hwang M. Sex-related differences in arterial spin-labelled perfusion of metabolically active brain structures in neonatal hypoxic-ischaemic encephalopathy. Clin Radiol 2021; 76:342-347. [PMID: 33579516 DOI: 10.1016/j.crad.2020.12.026] [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] [Received: 06/11/2020] [Accepted: 12/24/2020] [Indexed: 10/22/2022]
Abstract
AIM To investigate the sex-related differences in arterial spin-labelled (ASL) perfusion of metabolically active brain structures in neonatal hypoxic-ischaemic encephalopathy (HIE). MATERIALS AND METHODS Seventy-three term neonates were identified for a retrospective case-control study following an institutional review board (IRB) approved protocol. The cerebral pulsed arterial spin labelling values were compared by permutation test to identify metabolically active brain structures with significant perfusion changes between 10 male controls and eight female controls, and between 31 HIE males and 24 HIE females. RESULTS In the perfusion comparison between HIE male and female neonates, significantly lower perfusion was found in the thalamus in males (p=0.02). The other brain clusters, including basal ganglia, hippocampus cluster, cingulate gyrus cluster, brainstem cluster, sensorimotor cortex cluster, and cerebellum and peduncle cluster, demonstrated no significant differences between HIE males and females. In the perfusion comparison between male and female controls, there were no significant perfusion changes in those brain clusters. CONCLUSION Brain perfusion in neonatal HIE differs between males and females in the thalamus, a metabolically active region within neonates, with males demonstrating lower perfusion. This difference in perfusion may reflect sex-related disparities in response to and recovery from hypoxic-ischaemic events.
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Affiliation(s)
- Q Zheng
- School of Computer and Control Engineering, Yantai University, Yantai, China
| | - C W Freeman
- Department of Radiology, University of Pennsylvania, Philadelphia, PA, USA
| | - M Hwang
- Department of Radiology, Children's Hospital of Philadelphia, Philadelphia, PA, USA; Department of Radiology, University of Pennsylvania, Philadelphia, PA, USA.
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Mai W, Hwang M, Mayeda M, Shaish H, Deutsch I. Creating CT- and MRI-guided urethra planning-risk-volumes for urethra-sparing prostate stereotactic body radiotherapy. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.550] [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: 10/23/2022]
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Mayeda M, Hwang M, Shaish H, Elliston C, Wenske S, Deutsch I. Rectal Spacer Facilitates Neurovascular Bundle Sparing Stereotactic Body Radiotherapy for Erectile Function Preservation in Prostate Cancer. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.635] [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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Maksymowych WP, Caplan L, Deodhar A, Dolatabadi S, Hwang M, Carlson A, Steed K, Carapellucci A, Paschke J, Gensler LS. AB1358-HPR DIAGNOSIS OF AXIAL SPONDYLOARTHRITIS: A PRIMARY UNMET EDUCATIONAL NEED FOR RHEUMATOLOGISTS. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.6115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Diagnosis of axial spondyloarthritis (axSpA) is challenging because of absent physical findings in early disease and the limited diagnostic performance of laboratory markers. Considerable reliance is placed on imaging of the sacroiliac joints (SIJ) but specialty training is primarily focused on interpretation of plain radiographic abnormalities.Objectives:We aimed to identify what might be the primary unmet educational needs of rheumatologists completing fellowship training by using clinical and imaging data from an inception cohort of patients presenting with undiagnosed back pain. We hypothesized that concordance would increase after imaging is reviewed after the clinical data.Methods:The diagnosis of axSpA was compared between local rheumatologists, axSpA experts and pF using clinical and imaging data from the multicenter Screening for Axial Spondyloarthritis in Psoriasis, Iritis, and Colitis (SASPIC) Study. In this inception cohort, patients ≤45 years of age with ≥3 months back pain undergo diagnostic evaluation by a local SASPIC rheumatologist, including imaging of the SIJ, who then records a global evaluation of presence/absence of axial SpA. This is done at 3 consecutive stages: 1.After the clinical evaluation. 2.After the results of labs (HLA B27, CRP) and radiography. 3.After review of the local MRI. In this exercise, 20 cases were selected from the SASPIC cohort and the rheumatologist global evaluations were removed from the eCRFs. Four experts in axSpA reviewed the clinical and imaging data in each eCRF and provided their global evaluations for stages 1, 2, and 3 of these 20 cases. Subsequently, 4 pF rheumatologists conducted the same exercise blinded to the assessments of the local rheumatologist and experts in axSpA. Concordance (% agreement) between the assessors was analyzed.Results:Diagnosis of axSpA by the local SASPIC rheumatologist was made in 90%, 65%, and 75% of cases after stages 1, 2, and 3, respectively. Majority diagnosis of axSpA by experts was made in 84.2% (16/19), 57.9% (11/19), and 63.2% (12/19), after stages 1,2, and 3, respectively. Majority diagnosis of axSpA by pF rheumatologists was made in 94.4% (17/18), 100% (16/16), and 93.8% (15/16). Concordance among experts and between experts and local SASPIC rheumatologists increased after review of imaging data. For pf-rheumatologists concordance with experts increased after review of imaging for 2 assessors and decreased for the other 2 assessors. For the latter, the primary reason for decrease in concordance with experts was false positive diagnosis of axSpA in 35% and 30% of the cases after review of the imaging.Conclusion:A structured case-based and sequential evaluation of clinical and imaging data suggests a gap in the training of recently graduated rheumatologists, with over-interpretation of imaging leading to false positive diagnosis of axSpA.AssessorsMean % Concordance (range) for diagnosis of axSpAStage 1Stage 2Stage 3Experts in axSpA64.2 (45-80)75.8 (65-85)84.2 (70-95)Local rheumatologist vs Experts in axSpA73.8 (70-80)83.8 (80-85)83.8 (80-90)pF rheumatologist 1 vs Experts consensus78.994.494.7pF rheumatologist 2 vs Experts consensus89.561.168.4pF rheumatologist 3 vs Experts consensus63.272.284.2pF rheumatologist 4 vs Experts consensus89.566.768.4Disclosure of Interests:Walter P. Maksymowych Grant/research support from: AbbVie, Novartis, Pfizer, and UCB, Consultant of: AbbVie, Boehringer Ingelheim, Celgene, Eli Lilly, Galapagos, Janssen, Novartis, Pfizer, and UCB, Employee of: Chief Medical Officer of CARE Arthritis Limited, Speakers bureau: AbbVie, Janssen, Novartis, Pfizer, and UCB, Liron Caplan: None declared, Atul Deodhar Grant/research support from: AbbVie, Eli Lilly, GSK, Novartis, Pfizer, UCB, Consultant of: AbbVie, Amgen, Boehringer Ingelheim, Bristol Myer Squibb (BMS), Eli Lilly, GSK, Janssen, Novartis, Pfizer, UCB, Speakers bureau: AbbVie, Amgen, Boehringer Ingelheim, Bristol Myer Squibb (BMS), Eli Lilly, GSK, Janssen, Novartis, Pfizer, UCB, Soha Dolatabadi: None declared, Mark Hwang: None declared, Adam Carlson: None declared, Kelly Steed: None declared, Amanda Carapellucci: None declared, Joel Paschke: None declared, Lianne S. Gensler Grant/research support from: Pfizer, Novartis, UCB, Consultant of: AbbVie, Eli Lilly, GSK, Novartis, UCB
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Posner M, Misiukiewicz D, Hwang M, Gupta V, Miles B, Bakst R, Genden E, Selkridge I, Surgeon J, Rainey H, Camille N, Roy E, Zhang D, Fei Y, Jia R, Moshier E, Som P, Bonomi M. Survival and Quality of Life Analysis in a Randomized Deintensification Trial for Locally Advanced HPV Positive Oropharynx Cancer Patients. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2019.11.215] [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]
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Moon WJ, Park M, Hwang M, Kim JK. Functional MRI as an Objective Measure of Olfaction Deficit in Patients with Traumatic Anosmia. AJNR Am J Neuroradiol 2018; 39:2320-2325. [PMID: 30409849 DOI: 10.3174/ajnr.a5873] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [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: 06/07/2018] [Accepted: 09/24/2018] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND PURPOSE While posttraumatic anosmia is not uncommon, the olfactory function evaluation has strongly relied on subjective responses given by patients. We aimed to examine the utility of fMRI as an objective tool for diagnosing traumatic anosmia. MATERIALS AND METHODS Sixteen patients (11 men and 5 women; mean age, 42.2 ± 10.4 years) with clinically diagnosed traumatic anosmia and 19 healthy control subjects (11 men and 8 women; mean age, 29.3 ± 8.5 years) underwent fMRI during olfactory stimulation with citral (a pleasant odor) or β-mercaptoethanol (an unpleasant odor). All patients were subjected to a clinical olfactory functional assessment and nasal endoscopic exploration. Two-sample t tests were conducted with age as a covariate to examine group differences in brain activation responses to olfactory stimulation (false discovery rate-corrected P < .05). RESULTS Compared with healthy control subjects, patients with traumatic anosmia had reduced activation in the bilateral primary and secondary olfactory cortices and the limbic system in response to β-mercaptoethanol stimulation, whereas reduced activation was observed only in the left frontal subgyral region in response to citral stimulation. CONCLUSIONS Brain activation was decreased in the bilateral primary and secondary olfactory cortices as well as the limbic system in response to olfactory stimulation in patients with traumatic anosmia compared with healthy control subjects. These preliminary results may shed light on the potential of fMRI for the diagnosis of traumatic anosmia.
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Affiliation(s)
- W-J Moon
- Department of Radiology (W.-J.M., M.P.), Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - M Park
- Department of Radiology (W.-J.M., M.P.), Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - M Hwang
- GE Healthcare (M.H.), Seoul, Korea
| | - J K Kim
- Department of Otorhinolaryngology-Head and Neck Surgery (J.K.K.), Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
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Hwang M, Wenske S, Deutsch I. Stereotactic Body Radiation Therapy (SBRT) with Periprostatic Hydrogel Spacer for Localized Prostate Cancer: Safety and Toxicity Profile, and Early Oncologic Outcomes. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.322] [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: 10/28/2022]
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Black P, Smith D, Chaudhary K, Xanthopoulos E, Chin C, Spina C, Hwang M, Mayeda M, Wang Y, Connolly E, Wang T, Wuu C, Hei T, Cheng S, Wu C. Adaptive Deformable Registration and Fusion for Fractionated Stereotactic Radiosurgery Using a Small Animal Irradiator. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1514] [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: 10/28/2022]
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Lee H, Lee Y, Lee D, Hwang M, Lee H, Ley C. THE RELATIONSHIP BETWEEN ORAL HEALTH AND DEPRESSIVE SYMPTOMS IN LATER-LIFE. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.1046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Lim B, Hwang M, Song JS, Ryu AJ, Joung B, Shim EB, Ryu H, Pak HN. 1008Effectiveness of atrial fibrillation rotor ablation is dependent on conduction velocity: an in-silico 3-dimensional modeling study. Europace 2018. [DOI: 10.1093/europace/euy015.557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- B Lim
- Yonsei University , Seoul, Korea Republic of
| | - M Hwang
- Yonsei University , Seoul, Korea Republic of
| | - J S Song
- Yonsei University , Seoul, Korea Republic of
| | - A J Ryu
- Kangwon National University Hospital, Chuncheon, Korea Republic of
| | - B Joung
- Yonsei University , Seoul, Korea Republic of
| | - E B Shim
- Kangwon National University Hospital, Chuncheon, Korea Republic of
| | - H Ryu
- NVIDIA, Seoul, Korea Republic of
| | - H N Pak
- Yonsei University , Seoul, Korea Republic of
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Hwang M, Yanagihara T, Lee A, Hsieh K, Wang T. A Non-random Spatial Distribution of Brain Metastases. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.784] [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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Wang M, Hwang M, Ghosh S, Severin D, Nijjar T, Chu K, Gabos Z, Debenham B, Yee D, Tankel K, Roa W, Pearcey R, Joseph K, Danielson B, Fairchild A. Documentation of Driving Recommendations for Patients Receiving Whole Brain Radiation Therapy. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1607] [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]
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Agudo JR, Luzi G, Han J, Hwang M, Lee J, Wierschem A. Detection of particle motion using image processing with particular emphasis on rolling motion. Rev Sci Instrum 2017; 88:051805. [PMID: 28571429 DOI: 10.1063/1.4983054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Image-processing has been used in granular systems for detecting particle positions and motion near optically accessible surfaces like sediment flow and bedload transport. We review the image-processing techniques used for single and multiple particles. To enhance reliability in particle recognition, tools like Canny edge and Hough transform are intensively used. We show exemplarily how they can be applied to detect not only particle positions but also rotatory motion. The different steps are described in detail and the algorithm is applied to different examples, which are discussed in view of the obtained accuracy.
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Affiliation(s)
- J R Agudo
- Institute of Fluid Mechanics, FAU Busan Campus, University of Erlangen-Nuremberg, 618-230 Busan, South Korea
| | - G Luzi
- Institute of Fluid Mechanics, FAU Busan Campus, University of Erlangen-Nuremberg, 618-230 Busan, South Korea
| | - J Han
- Institute of Fluid Mechanics, FAU Busan Campus, University of Erlangen-Nuremberg, 618-230 Busan, South Korea
| | - M Hwang
- Institute of Fluid Mechanics, FAU Busan Campus, University of Erlangen-Nuremberg, 618-230 Busan, South Korea
| | - J Lee
- Institute of Fluid Mechanics, FAU Busan Campus, University of Erlangen-Nuremberg, 618-230 Busan, South Korea
| | - A Wierschem
- Institute of Fluid Mechanics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), D-91058 Erlangen, Germany
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Hwang M, Go Y, Park JH, Shin SK, Song SE, Oh BC, Im SS, Hwang I, Jeon YH, Lee IK, Seino S, Song DK. Epac2a-null mice exhibit obesity-prone nature more susceptible to leptin resistance. Int J Obes (Lond) 2016; 41:279-288. [PMID: 27867203 PMCID: PMC5309344 DOI: 10.1038/ijo.2016.208] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 10/07/2016] [Accepted: 10/30/2016] [Indexed: 02/08/2023]
Abstract
BACKGROUND The exchange protein directly activated by cAMP (Epac), which is primarily involved in cAMP signaling, has been known to be essential for controlling body energy metabolism. Epac has two isoforms: Epac1 and Epac2. The function of Epac1 on obesity was unveiled using Epac1 knockout (KO) mice. However, the role of Epac2 in obesity remains unclear. METHODS To evaluate the role of Epac2 in obesity, we used Epac2a KO mice, which is dominantly expressed in neurons and endocrine tissues. Physiological factors related to obesity were analyzed: body weight, fat mass, food intake, plasma leptin and adiponectin levels, energy expenditure, glucose tolerance, and insulin and leptin resistance. To determine the mechanism of Epac2a, mice received exogenous leptin and then hypothalamic leptin signaling was analyzed. RESULTS Epac2a KO mice appeared to have normal glucose tolerance and insulin sensitivity until 12 weeks of age, but an early onset increase of plasma leptin levels and decrease of plasma adiponectin levels compared with wild-type mice. Acute leptin injection revealed impaired hypothalamic leptin signaling in KO mice. Consistently, KO mice fed a high-fat diet (HFD) were significantly obese, presenting greater food intake and lower energy expenditure. HFD-fed KO mice were also characterized by greater impairment of hypothalamic leptin signaling and by weaker leptin-induced decrease in food consumption compared with HFD-fed wild-type mice. In wild-type mice, acute exogenous leptin injection or chronic HFD feeding tended to induce hypothalamic Epac2a expression. CONCLUSIONS Considering that HFD is an inducer of hypothalamic leptin resistance and that Epac2a functions in pancreatic beta cells during demands of greater work load, hypothalamic Epac2a may have a role in facilitating leptin signaling, at least in response to higher metabolic demands. Thus, our data indicate that Epac2a is critical for preventing obesity and thus Epac2a activators may be used to manage obesity and obesity-mediated metabolic disorders.
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Affiliation(s)
- M Hwang
- Department of Physiology and Obesity-mediated Disease Research Center, Keimyung University School of Medicine, Daegu, Korea
| | - Y Go
- Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea
| | - J-H Park
- Department of Physiology and Obesity-mediated Disease Research Center, Keimyung University School of Medicine, Daegu, Korea
| | - S-K Shin
- Department of Physiology and Obesity-mediated Disease Research Center, Keimyung University School of Medicine, Daegu, Korea
| | - S E Song
- Department of Physiology and Obesity-mediated Disease Research Center, Keimyung University School of Medicine, Daegu, Korea
| | - B-C Oh
- Laboratory of Molecular and Cellular Biochemistry, Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, Korea
| | - S-S Im
- Department of Physiology and Obesity-mediated Disease Research Center, Keimyung University School of Medicine, Daegu, Korea
| | - I Hwang
- Department of Physiology and Obesity-mediated Disease Research Center, Keimyung University School of Medicine, Daegu, Korea
| | - Y H Jeon
- Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea
| | - I-K Lee
- Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea
| | - S Seino
- Division of Molecular and Metabolic Medicine, Department of Physiology and Cell Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - D-K Song
- Department of Physiology and Obesity-mediated Disease Research Center, Keimyung University School of Medicine, Daegu, Korea
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Hwang M, Park J, Ko A, Kho Y, Hwang I. The association with human biomonitoring and the sources of cadmium exposure among the general Korean adults. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.06.1751] [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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Jang S, Hwang M, Michalski D, Lalonde R, Huq M. SU-F-T-652: Verification of Inter-Fractional Tumor Motion Using Daily Fiducial Length Measurement for Pancreatic SBRT. Med Phys 2016. [DOI: 10.1118/1.4956837] [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: 11/07/2022] Open
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Jung K, Kim Y, Park W, Lim M, Carl M, Kim D, Hwang M, Cha J, Kwon S. FRI0533 The Diagnostic Performance of Post-Contrast 3-D Ultrashort Echo Time Sequence of Sacroiliitis in Patients with Axial Spondyloarthropathy Comparing with Conventional Post-Contrast Fat Suppressed T1 Weighted Sequence. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.3349] [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: 11/03/2022]
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McCaw T, Hwang M, Jang S, Huq M. SU-F-T-488: Comparison of the TG-51 and TG-51 Addendum Calibration Protocols. Med Phys 2016. [DOI: 10.1118/1.4956673] [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: 11/07/2022] Open
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Huq MS, Ozhasoglu C, Jang S, Hwang M, Heron D, Lalonde R. SU-E-T-88: Acceptance Testing and Commissioning Measurements of a Newly Released InCiseâ„¢ Multileaf Collimator for CyberKnife M6â„¢ System. Med Phys 2015. [DOI: 10.1118/1.4924449] [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] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Hwang M, Jang S, Ozhasoglu C, Lalonde R, Heron D, Huq M. SU-E-T-604: Penumbra Characteristics of a New InCiseâ„¢ Multileaf Collimator of CyberKnife M6â„¢ System. Med Phys 2015. [DOI: 10.1118/1.4924967] [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: 11/07/2022] Open
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Hwang M, Zebracki K, Chlan KM, Vogel LC. Longitudinal employment outcomes in adults with pediatric-onset spinal cord injury. Spinal Cord 2014; 52:477-82. [PMID: 24663002 DOI: 10.1038/sc.2014.32] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 02/10/2014] [Accepted: 02/21/2014] [Indexed: 11/09/2022]
Abstract
STUDY DESIGN Longitudinal survey. OBJECTIVES To determine in adults with pediatric-onset spinal cord injury (SCI) employment outcomes, longitudinal changes in employment over time and changes in psychosocial outcomes associated with employment status. SETTING Community setting. METHODS Adults who had sustained a SCI before 19 years of age and had completed at least three consecutive annual interviews were included in the study. Generalized estimating equation models were formulated to obtain odds ratio (OR) of change in employment status and outcomes over time. RESULTS Total 1691 interviews were conducted in 283 participants, 182 men and 101 women (88% Caucasian; age at baseline, 27.3±3.7 years; duration at baseline, 12.7±5.0 years). At the last interview (age, 34.4±5.2 years; duration, 19.9±6.1 years), 49.5% were employed and 47.0% had a baccalaureate or post-baccalaureate degree. There was no significant change in employment status over time (OR 1.01, confidence interval (CI) 0.98-1.04). Odds of employment increased over time in participants who were women (1.04, CI 1.00-1.08), married (1.05, CI 1.02-1.08) and attained baccalaureate (1.03, CI 1.00-1.07) or post-baccalaureate (1.05, CI 1.02-1.08) degree. Employment odds decreased with occurrence of autonomic dysreflexia (0.80, CI 0.65-0.99), spasticity (0.80, CI 0.59-0.99) or chronic medical condition (0.83, CI 0.71-0.98). Life satisfaction scores increased over time in those who remained employed (1.11, CI 1.01-1.22); odds of depression increased over time in those who remained unemployed (1.13, CI 1.04-1.23). CONCLUSION Employment status remained relatively stable in adults with pediatric-onset SCI; however, changes in employment were associated with education, secondary health conditions and psychosocial well-being.
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Affiliation(s)
- M Hwang
- 1] Orthopaedic Rehabilitation and Engineering Center, Marquette University, Milwaukee, WI, USA [2] Department of Clinical Research, Shriners Hospitals for Children, Chicago, IL, USA
| | - K Zebracki
- 1] Department of Psychology, Shriners Hospitals for Children, Chicago, IL, USA [2] Department of Psychology, Loyola University Chicago, Chicago, IL, USA
| | - K M Chlan
- Department of Clinical Research, Shriners Hospitals for Children, Chicago, IL, USA
| | - L C Vogel
- 1] Department of Pediatrics, Shriners Hospitals for Children, Chicago, IL, USA [2] Department of Pediatrics, Rush University Medical Center, Chicago, IL, USA
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Jayakrishnan T, Green D, Hwang M, Zacharias A, Arce J, Sharma A, Johnston F, Gamblin TC, Turaga K. Impact of the Experience of Academic Surgical Chairpersons on Departmental Research Funding. J Surg Res 2014. [DOI: 10.1016/j.jss.2013.11.606] [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: 10/25/2022]
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Hoit G, Hinkewich C, Tiao J, Porgo V, Moore L, Moore L, Tiao J, Wang C, Moffatt B, Wheeler S, Gillman L, Bartens K, Lysecki P, Pallister I, Patel S, Bradford P, Bradford P, Kidane B, Holmes A, Trajano A, March J, Lyons R, Kao R, Rezende-Neto J, Leblanc Y, Rezende-Neto J, Vogt K, Alzaid S, Jansz G, Andrusiek D, Andrusiek D, Bailey K, Livingston M, Calthorpe S, Hsu J, Lubbert P, Boitano M, Leeper W, Williamson O, Reid S, Alonazi N, Lee C, Rezende-Neto J, Aleassa E, Jennings P, Jennings P, Mador B, Hoffman K, Riley J, Vu E, Alburakan A, Alburakan A, Alburakan A, Mckee J, Bobrovitz N, Gabbe B, Gabbe B, Hodgkinson J, Hodgkinson J, Ali J, Ali J, Grant M, Roberts D, Holodinsky J, Cooper C, Santana M, Kruger K, Hodgkinson J, Waggott M, Da Luz L, Banfield J, Santana M, Dorigatti A, Birn K, Bobrovitz N, Zakirova R, Davies D, Das D, Gamme G, Pervaiz F, Almarhabi Y, Brainard A, Brown R, Bell N, Bell N, Jowett H, Jowett H, Bressan S, Hogan A, Watson I, Woodford S, Hogan A, Boulay R, Watson I, Howlett M, Atkinson P, Chesters A, Hamadani F, Atkinson P, Azzam M, Fraser J, Doucet J, Atkinson P, Muakkassa F, Sathivel N, Chadi S, Joseph B, Takeuchi L, Bradley N, Al Bader B, Kidane B, Harrington A, Nixon K, Veigas P, Joseph B, O’Keeffe T, Bracco D, Rezende-Neto J, Azzam M, Lin Y, Bailey K, Bracco D, Nash N, Alhabboubi M, Slobogean G, Spicer J, Heidary B, Joos E, Berg R, Berg R, Sankarankutty A, Zakrison T, Babul S, Lockhart S, Faux S, Jackson A, Lee T, Bailey K, Pemberton J, Green R, Tallon J, Moore L, Turgeon A, Boutin A, Moore L, Reinartz D, Lapointe G, Turgeon A, Stelfox H, Turgeon A, Nathens A, Neveu X, Stelfox H, Turgeon A, Nathens A, Neveu X, Moore L, Turgeon A, Bratu I, Gladwin C, Voaklander D, Lewis M, Vogt K, Eckert K, Williamson J, Stewart TC, Parry N, Gray D, L’Heureux R, Ziesmann M, Kortbeek J, Brindley P, Hicks C, Fata P, Engels P, Ball C, Paton-Gay D, Widder S, Vogt K, Hernandez-Alejandro R, Gray D, Vanderbeek L, Forrokhyar F, Anatharajah R, Howatt N, Lamb S, Sne N, Kahnamoui K, Lyons R, Walters A, Brooks C, Pinder L, Rahman S, Walters A, Kidane B, Parry N, Donnelly E, Lewell M, Mellow R, Hedges C, Morassutti P, Bulatovic R, Morassutti P, Galbraith E, McKenzie S, Bradford D, Lewell M, Peddle M, Dukelow A, Eby D, McLeod S, Bradford P, Stewart TC, Parry N, Williamson O, Fraga G, Pereira B, Sareen J, Doupe M, Gawaziuk J, Chateau D, Logsetty S, Pallister I, Lewis J, O’Doherty D, Hopkins S, Griffiths S, Palmer S, Gabbe B, Xu X, Martin C, Xenocostas A, Parry N, Mele T, Rui T, Abreu E, Andrade M, Cruz F, Pires R, Carreiro P, Andrade T, Lampron J, Balaa F, Fortuna R, Issa H, Dias P, Marques M, Fernandes T, Sousa T, Inaba K, Smith J, Okoye O, Joos E, Shulman I, Nelson J, Parry N, Rhee P, Demetriades D, Ostrofsky R, Butler-Laporte G, Chughtai T, Khwaja K, Fata P, Mulder D, Razek T, Deckelbaum D, Bailey K, Pemberton J, Evans D, Anton H, Wei J, Randall E, Sobolev B, Scott BB, van Heest R, Frankfurter C, Pemberton J, McKerracher S, Stewart TC, Merritt N, Barber L, Kimmel L, Hodgson C, Webb M, Holland A, Gruen R, Harrison K, Hwang M, Hsee L, Civil I, Muizelaar A, Baillie F, Leeper T, Stewart TC, Gray D, Parry N, Sutherland A, Hart M, Gabbe B, Tuma F, Coates A, Farrokhyar F, Faidi S, Gastaldo F, Paskar D, Reid S, Faidi S, Petrisor B, Bhandari M, Loh WL, Ho C, Chong C, Rodrigues G, Gissoni M, Martins M, Andrade M, Cunha-Melo J, Rizoli S, Abu-Zidan F, Cameron P, Bernard S, Walker T, Jolley D, Fitzgerald M, Masci K, Gabbe B, Simpson P, Smith K, Cox S, Cameron P, Evans D, West A, Barratt L, Rozmovits L, Livingstone B, Vu M, Griesdale D, Schlamp R, Wand R, Alhabboubi M, Alrowaili A, Alghamdi H, Fata P, Essbaiheen F, Alhabboubi M, Fata P, Essbaiheen F, Chankowsky J, Razek T, Stephens M, Vis C, Belton K, Kortbeek J, Bratu I, Dufresne B, Guilfoyle J, Ibbotson G, Martin K, Matheson D, Parks P, Thomas L, Kirkpatrick A, Santana M, Kline T, Kortbeek J, Stelfox H, Lyons R, Macey S, Fitzgerald M, Judson R, Cameron P, Sutherland A, Hart M, Morgan M, McLellan S, Wilson K, Cameron P, Sorvari A, Chaudhry Z, Khawaja K, Ali A, Akhtar J, Zubair M, Nickow J, Sorvari A, Holodinsky J, Jaeschke R, Ball C, Blaser AR, Starkopf J, Zygun D, Kirkpatrick A, Roberts D, Ball C, Blaser AR, Starkopf J, Zygun D, Jaeschke R, Kirkpatrick A, Santana M, Stelfox H, Stelfox H, Rizoli S, Tanenbaum B, Stelfox H, Redondano BR, Jimenez LS, Zago T, de Carvalho RB, Calderan TA, Fraga G, Campbell S, Widder S, Paton-Gay D, Engels P, Ferri M, Santana M, Kline T, Kortbeek J, Stelfox H, Nathens A, Lashoher A, McFarlan A, Ahmed N, Booy J, McDowell D, Nasr A, Wales P, Roberts D, Mercado M, Vis C, Kortbeek J, Kirkpatrick A, Lall R, Stelfox H, Ball C, Niven D, Dixon E, Stelfox H, Kirkpatrick A, Kaplan G, Hameed M, Ball C, Qadura M, Sne N, Reid S, Coates A, Faidi S, Veenstra J, Hennecke P, Gardner R, Appleton L, Sobolev B, Simons R, van Heest R, Hameed M, Sobolev B, Simons R, van Heest R, Hameed M, Palmer C, Bevan C, Crameri J, Palmer C, Hogan D, Grealy L, Bevan C, Palmer C, Jowett H, Boulay R, Chisholm A, Beairsto E, Goulette E, Martin M, Benjamin S, Boulay R, Watson I, Boulay R, Watson I, Watson I, Savoie J, Benjamin S, Martin M, Hogan A, Woodford S, Benjamin S, Chisholm A, Ondiveeran H, Martin M, Atkinson P, Doody K, Fraser J, Leblanc-Duchin D, Strack B, Naveed A, vanRensburg L, Madan R, Atkinson P, Boulva K, Deckelbaum D, Khwaja K, Fata P, Razek T, Fraser J, Verheul G, Parks A, Milne J, Nemeth J, Fata P, Correa J, Deckelbaum D, Bernardin B, Al Bader B, Khwaja K, Razek T, Atkinson P, Benjamin S, Sproul E, Mehta A, Galarneau M, Mahadevan P, Bansal V, Dye J, Hollingsworth-Fridlund P, Stout P, Potenza B, Coimbra R, Madan R, Marley R, Salvator A, Pisciotta D, Bridge J, Lin S, Ovens H, Nathens A, Abdo H, Dencev-Bihari R, Parry N, Lawendy A, Ibrahim-Zada I, Pandit V, Tang A, O’Keeffe T, Wynne J, Gries L, Friese R, Rhee P, Hameed M, Simons R, Taulu T, Wong H, Saleem A, Azzam M, Boulva K, Razek T, Khwaja K, Mulder D, Deckelbaum D, Fata P, Plourde M, Chadi S, Forbes T, Parry N, Martin G, Gaunt K, Bandiera G, Bawazeer M, MacKinnon D, Ahmed N, Spence J, Sankarankutty A, Nascimento B, Rizoli S, Ibrahim-Zada I, Aziz H, Tang A, Friese R, Wynne J, O’keeffe T, Vercruysse G, Kulvatunyou N, Rhee P, Sakles J, Mosier J, Wynne J, Kulvatunyou N, Tang A, Joseph B, Rhee P, Khwaja K, Fata P, Deckelbaum D, Razek T, Dias P, Issa H, Fortuna R, Sousa T, Abreu E, Bracco D, Khwaja K, Fata P, Deckelbaum D, Razek T, Bracco D, Khwaja K, Fata P, Deckelbaum D, Razek T, Norman D, Li J, Pemberton J, Al-Oweis J, Khwaja K, Fata P, Deckelbaum D, Razek T, Albuz O, Karamanos E, Vogt K, Okoye O, Talving P, Inaba K, Demetriades D, Elhusseini M, Sudarshan M, Deckelbaum D, Fata P, Razek T, Khwaja K, MacPherson C, Sun T, Pelletier M, Hameed M, Khalil MA, Azzam M, Valenti D, Fata P, Deckelbaum D, Razek T, Brown R, Simons R, Evans D, Hameed M, Inaba K, Vogt K, Okoye O, Gelbard R, Moe D, Grabo D, Demetriades D, Inaba K, Karamanos E, Okoye O, Talving P, Demetriades D, Inaba K, Karamanos E, Pasley J, Teixeira P, Talving P, Demetriades D, Fung S, Alababtain I, Brnjac E, Luz L, Nascimento B, Rizoli S, Parikh P, Proctor K, Murtha M, Schulman C, Namias N, Goldman R, Pike I, Korn P, Flett C, Jackson T, Keith J, Joseph T, Giddins E, Ouellet J, Cook M, Schreiber M, Kortbeek J. Trauma Association of Canada (TAC) Annual Scientific Meeting. The Westin Whistler Resort & Spa, Whistler, BC, Thursday, Apr. 11 to Saturday, Apr. 13, 2013Testing the reliability of tools for pediatric trauma teamwork evaluation in a North American high-resource simulation settingThe association of etomidate with mortality in trauma patientsDefinition of isolated hip fractures as an exclusion criterion in trauma centre performance evaluations: a systematic reviewEstimation of acute care hospitalization costs for trauma hospital performance evaluation: a systematic reviewHospital length of stay following admission for traumatic injury in Canada: a multicentre cohort studyPredictors of hospital length of stay following traumatic injury: a multicentre cohort studyInfluence of the heterogeneity in definitions of an isolated hip fracture used as an exclusion criterion in trauma centre performance evaluations: a multicentre cohort studyPediatric trauma, advocacy skills and medical studentsCompliance with the prescribed packed red blood cell, fresh frozen plasma and platelet ratio for the trauma transfusion pathway at a level 1 trauma centreEarly fixed-wing aircraft activation for major trauma in remote areasDevelopment of a national, multi-disciplinary trauma crisis resource management curriculum: results from the pilot courseThe management of blunt hepatic trauma in the age of angioembolization: a single centre experienceEarly predictors of in-hospital mortality in adult trauma patientsThe impact of open tibial fracture on health service utilization in the year preceding and following injuryA systematic review and meta-analysis of the efficacy of red blood cell transfusion in the trauma populationSources of support for paramedics managing work-related stress in a Canadian EMS service responding to multisystem trauma patientsAnalysis of prehospital treatment of pain in the multisystem trauma patient at a community level 2 trauma centreIncreased mortality associated with placement of central lines during trauma resuscitationChronic pain after serious injury — identifying high risk patientsEpidemiology of in-hospital trauma deaths in a Brazilian university teaching hospitalIncreased suicidality following major trauma: a population-based studyDevelopment of a population-wide record linkage system to support trauma researchInduction of hmgb1 by increased gut permeability mediates acute lung injury in a hemorrhagic shock and resuscitation mouse modelPatients who sustain gunshot pelvic fractures are at increased risk for deep abscess formation: aggravated by rectal injuryAre we transfusing more with conservative management of isolated blunt splenic injury? A retrospective studyMotorcycle clothesline injury prevention: Experimental test of a protective deviceA prospective analysis of compliance with a massive transfusion protocol - activation alone is not enoughAn evaluation of diagnostic modalities in penetrating injuries to the cardiac box: Is there a role for routine echocardiography in the setting of negative pericardial FAST?Achievement of pediatric national quality indicators — an institutional report cardProcess mapping trauma care in 2 regional health authorities in British Columbia: a tool to assist trauma sys tem design and evaluationPatient safety checklist for emergency intubation: a systematic reviewA standardized flow sheet improves pediatric trauma documentationMassive transfusion in pediatric trauma: a 5-year retrospective reviewIs more better: Does a more intensive physiotherapy program result in accelerated recovery for trauma patients?Trauma care: not just for surgeons. Initial impact of implementing a dedicated multidisciplinary trauma team on severely injured patientsThe role of postmortem autopsy in modern trauma care: Do we still need them?Prototype cervical spine traction device for reduction stabilization and transport of nondistraction type cervical spine injuriesGoing beyond organ preservation: a 12-year review of the beneficial effects of a nonoperative management algorithm for splenic traumaAssessing the construct validity of a global disability measure in adult trauma registry patientsThe mactrauma TTL assessment tool: developing a novel tool for assessing performance of trauma traineesA quality improvement approach to developing a standardized reporting format of ct findings in blunt splenic injuriesOutcomes in geriatric trauma: what really mattersFresh whole blood is not better than component therapy (FFP:RBC) in hemorrhagic shock: a thromboelastometric study in a small animal modelFactors affecting mortality of chest trauma patients: a prospective studyLong-term pain prevalence and health related quality of life outcomes for patients enrolled in a ketamine versus morphine for prehospital traumatic pain randomized controlled trialDescribing pain following trauma: predictors of persistent pain and pain prevalenceManagement strategies for hemorrhage due to pelvic trauma: a survey of Canadian general surgeonsMajor trauma follow-up clinic: Patient perception of recovery following severe traumaLost opportunities to enhance trauma practice: culture of interprofessional education and sharing among emergency staffPrehospital airway management in major trauma and traumatic brain injury by critical care paramedicsImproving patient selection for angiography and identifying risk of rebleeding after angioembolization in the nonoperative management of high grade splenic injuriesFactors predicting the need for angioembolization in solid organ injuryProthrombin complex concentrates use in traumatic brain injury patients on oral anticoagulants is effective despite underutilizationThe right treatment at the right time in the right place: early results and associations from the introduction of an all-inclusive provincial trauma care systemA multicentre study of patient experiences with acute and postacute injury carePopulation burden of major trauma: Has introduction of an organized trauma system made a difference?Long-term functional and return to work outcomes following blunt major trauma in Victoria, AustraliaSurgical dilemma in major burns victim: heterotopic ossification of the tempromandibular jointWhich radiological modality to choose in a unique penetrating neck injury: a differing opinionThe Advanced Trauma Life Support (ATLS) program in CanadaThe Rural Trauma Team Development Course (RTTDC) in Pakistan: Is there a role?Novel deployment of BC mobile medical unit for coverage of BMX world cup sporting eventIncidence and prevalence of intra-abdominal hypertension and abdominal compartment syndrome in critically ill adults: a systematic review and meta-analysisRisk factors for intra-abdominal hypertension and abdominal compartment syndrome in critically ill or injured adults: a systematic review and meta-analysisA comparison of quality improvement practices at adult and pediatric trauma centresInternational trauma centre survey to evaluate content validity, usability and feasibility of quality indicatorsLong-term functional recovery following decompressive craniectomy for severe traumatic brain injuryMorbidity and mortality associated with free falls from a height among teenage patients: a 5-year review from a level 1 trauma centreA comparison of adverse events between trauma patients and general surgery patients in a level 1 trauma centreProcoagulation, anticoagulation and fibrinolysis in severely bleeding trauma patients: a laboratorial characterization of the early trauma coagulopathyThe use of mobile technology to facilitate surveillance and improve injury outcome in sport and physical activityIntegrated knowledge translation for injury quality improvement: a partnership between researchers and knowledge usersThe impact of a prevention project in trauma with young and their learningIntraosseus vascular access in adult trauma patients: a systematic reviewThematic analysis of patient reported experiences with acute and post-acute injury careAn evaluation of a world health organization trauma care checklist quality improvement pilot programProspective validation of the modified pediatric trauma triage toolThe 16-year evolution of a Canadian level 1 trauma centre: growing up, growing out, and the impact of a booming economyA 20-year review of trauma related literature: What have we done and where are we going?Management of traumatic flail chest: a systematic review of the literatureOperative versus nonoperative management of flail chestEmergency department performance of a clinically indicated and technically successful emergency department thoracotomy and pericardiotomy with minimal equipment in a New Zealand institution without specialized surgical backupBritish Columbia’s mobile medical unit — an emergency health care support resourceRoutine versus ad hoc screening for acute stress: Who would benefit and what are the opportunities for trauma care?A geographical analysis of the Early Development Instrument (EDI) and childhood injuryDevelopment of a pediatric spinal cord injury nursing course“Kids die in driveways” — an injury prevention campaignEpidemiology of traumatic spine injuries in childrenA collaborative approach to reducing injuries in New Brunswick: acute care and injury preventionImpact of changes to a provincial field trauma triage tool in New BrunswickEnsuring quality of field trauma triage in New BrunswickBenefits of a provincial trauma transfer referral system: beyond the numbersThe field trauma triage landscape in New BrunswickImpact of the Rural Trauma Team Development Course (RTTDC) on trauma transfer intervals in a provincial, inclusive trauma systemTrauma and stress: a critical dynamics study of burnout in trauma centre healthcare professionalsUltrasound-guided pediatric forearm fracture reduction with sedation in the emergency departmentBlock first, opiates later? The use of the fascia iliaca block for patients with hip fractures in the emergency department: a systematic reviewRural trauma systems — demographic and survival analysis of remote traumas transferred from northern QuebecSimulation in trauma ultrasound trainingIncidence of clinically significant intra-abdominal injuries in stable blunt trauma patientsWake up: head injury management around the clockDamage control laparotomy for combat casualties in forward surgical facilitiesDetection of soft tissue foreign bodies by nurse practitioner performed ultrasoundAntihypertensive medications and walking devices are associated with falls from standingThe transfer process: perspectives of transferring physiciansDevelopment of a rodent model for the study of abdominal compartment syndromeClinical efficacy of routine repeat head computed tomography in pediatric traumatic brain injuryEarly warning scores (EWS) in trauma: assessing the “effectiveness” of interventions by a rural ground transport service in the interior of British ColumbiaAccuracy of trauma patient transfer documentation in BCPostoperative echocardiogram after penetrating cardiac injuries: a retrospective studyLoss to follow-up in trauma studies comparing operative methods: a systematic reviewWhat matters where and to whom: a survey of experts on the Canadian pediatric trauma systemA quality initiative to enhance pain management for trauma patients: baseline attitudes of practitionersComparison of rotational thromboelastometry (ROTEM) values in massive and nonmassive transfusion patientsMild traumatic brain injury defined by GCS: Is it really mild?The CMAC videolaryngosocpe is superior to the glidescope for the intubation of trauma patients: a prospective analysisInjury patterns and outcome of urban versus suburban major traumaA cost-effective, readily accessible technique for progressive abdominal closureEvolution and impact of the use of pan-CT scan in a tertiary urban trauma centre: a 4-year auditAdditional and repeated CT scan in interfacilities trauma transfers: room for standardizationPediatric trauma in situ simulation facilitates identification and resolution of system issuesHospital code orange plan: there’s an app for thatDiaphragmatic rupture from blunt trauma: an NTDB studyEarly closure of open abdomen using component separation techniqueSurgical fixation versus nonoperative management of flail chest: a meta-analysisIntegration of intraoperative angiography as part of damage control surgery in major traumaMass casualty preparedness of regional trauma systems: recommendations for an evaluative frameworkDiagnostic peritoneal aspirate: An obsolete diagnostic modality?Blunt hollow viscus injury: the frequency and consequences of delayed diagnosis in the era of selective nonoperative managementEnding “double jeopardy:” the diagnostic impact of cardiac ultrasound and chest radiography on operative sequencing in penetrating thoracoabdominal traumaAre trauma patients with hyperfibrinolysis diagnosed by rotem salvageable?The risk of cardiac injury after penetrating thoracic trauma: Which is the better predictor, hemodynamic status or pericardial window?The online Concussion Awareness Training Toolkit for health practitioners (CATT): a new resource for recognizing, treating, and managing concussionThe prevention of concussion and brain injury in child and youth team sportsRandomized controlled trial of an early rehabilitation intervention to improve return to work Rates following road traumaPhone call follow-upPericardiocentesis in trauma: a systematic review. Can J Surg 2013. [DOI: 10.1503/cjs.005813] [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: 11/01/2022] Open
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Davies L, Abdullah K, Janardhan R, Hwang M, Farasatpour M, Margenthaler J, Virgo K, Johnson F. Breast Cancer in Patients With Schizophrenia: The Role of Adjuvant Radiation Therapy. J Surg Res 2013. [DOI: 10.1016/j.jss.2012.10.243] [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: 11/29/2022]
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Meyer AA, Hwang M, Farasatpour M, Janardhan R, Margenthaler JA, Virgo KS, Johnson FE. Metastatic breast cancer in patients with schizophrenia. Mol Clin Oncol 2012; 1:359-364. [PMID: 24649175 DOI: 10.3892/mco.2012.44] [Citation(s) in RCA: 8] [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: 07/11/2012] [Accepted: 10/30/2012] [Indexed: 11/05/2022] Open
Abstract
Breast cancer is a major health problem worldwide. The median survival duration for patients with metastatic breast cancer is two to three years. Approximately 1% of populations worldwide have schizophrenia. The manner in which schizophrenic patients fare when diagnosed with metastatic breast carcinoma (MBC) was evaluated. We queried the National Department of Veterans Affairs (DVA) datasets using computer codes for a pre-existing diagnosis of schizophrenia and a later diagnosis of breast carcinoma. Chart-based data concerning the identified subjects were then requested. Previously determined inclusion and exclusion criteria were applied to select evaluable patients from the medical records, prior to extracting demographic details and data concerning the treatment course in each subject. Ten patients had distant metastases at initial diagnosis, while seven developed MBC following prior curative-intent treatment. Two patients refused therapy. Ten did not comply with recommended management. Five harmed or threatened physicians, other caregivers or themselves. Schizophrenic patients with MBC often fail to understand the nature of their illnesses. Often they do not accept palliative treatment, while a number of them do not comply with therapy, once initiated. They often exhibit behaviors that are detrimental to themselves or others. Formal psychiatric consultation is therefore necessary in patients. Several detrimental behaviors may be predicted reliably by history alone.
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Affiliation(s)
- Aaron A Meyer
- Saint Louis University, St. Louis, MO; ; St. Louis VA Medical Center, St. Louis, MO
| | - M Hwang
- Saint Louis University, St. Louis, MO; ; St. Louis VA Medical Center, St. Louis, MO
| | - M Farasatpour
- Saint Louis University, St. Louis, MO; ; St. Louis VA Medical Center, St. Louis, MO
| | - R Janardhan
- Saint Louis University, St. Louis, MO; ; St. Louis VA Medical Center, St. Louis, MO
| | | | - K S Virgo
- American Cancer Society, Atlanta, GA, USA
| | - Frank E Johnson
- Saint Louis University, St. Louis, MO; ; St. Louis VA Medical Center, St. Louis, MO
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Ahn C, Hwang M, Ramsamooj P, Lee S, Jung M. Rapamycin-induced apoptosis is p53-independent in human prostate carcinoma PC-3 cells. Int J Oncol 2012; 11:1115-8. [PMID: 21528311 DOI: 10.3892/ijo.11.5.1115] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
We have investigated the mechanisms of rapamycin-induced growth inhibition and apoptosis in the PC-3 prostate carcinoma cell line. Rapamycin induced apoptosis as well as the expression of p21(waf1) mRNA and protein, independent of p53. Rapamycin treatment also resulted in: a decrease in cdk2 kinase activity; an increase in hypophosphorylated retinoblastoma protein (pRb); a dephosphorylation of p70 S6 kinase; and, growth-arrest in G(1)-phase of cell cycle. These data suggest that rapamycin-induced growth arrest and apoptosis occur through the p53-independent induction of p21(waf1). Since this induction occurred soon after rapamycin treatment, possibly, the early induction of p21(waf1) and G(1)-arrest are important components of the mechanism by which rapamycin induces apoptosis in PC-3 cells.
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Affiliation(s)
- C Ahn
- GEORGETOWN UNIV,DEPT RADIAT MED,WASHINGTON,DC 20007. US FDA,DIV ONCOL,ROCKVILLE,MD 20857. US FDA,DIV DRUG PROD & RES & TESTING,ROCKVILLE,MD 20857
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Jang EY, Hwang M, Yoon SS, Lee JR, Kim KJ, Kim HC, Yang CH. Liquiritigenin decreases selective molecular and behavioral effects of cocaine in rodents. Curr Neuropharmacol 2011; 9:30-4. [PMID: 21886557 PMCID: PMC3137196 DOI: 10.2174/157015911795017371] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2009] [Revised: 04/17/2010] [Accepted: 05/26/2010] [Indexed: 11/30/2022] Open
Abstract
Cocaine, as an indirect dopamine agonist, induces selective behavioral and physiological events such as hyperlocomotion and dopamine release. These changes are considered as consequences of cocaine-induced molecular adaptation such as CREB and c-Fos. Recently, methanolic extracts from licorice was reported to decrease cocaine-induced dopamine release and c-Fos expression in the nucleus accumbens. In the present study, we investigated the effects of liquiritigenin (LQ), a main compound of licorice, on acute cocaine-induced behavioral and molecular changes in rats. LQ attenuated acute cocaine-induced hyperlocomotion in dose-dependent manner. In addition, LQ inhibited CREB phosphorylation and c-Fos expression in the striatum and the nucleus accumbens induced by acute cocaine. Results provide strong evidence that LQ effectively attenuates the acute behavioral effects of cocaine exposure and prevents the induction of selective neuroadaptive changes in dopaminergic signaling pathways. Further investigation of LQ from licorice extract might provide a novel therapeutic strategy for the treatment of cocaine addiction.
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Affiliation(s)
- E Y Jang
- Department of Physiology, College of Oriental Medicine, Daegu Haany University, Daegu 706-828, South Korea
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Muttalib M, Rusius V, Hwang M, Chan Y, Brown H. Diagnostic and treatment challenges in idiopathic granulomatous mastitis - 10 year experience. Eur J Surg Oncol 2011. [DOI: 10.1016/j.ejso.2011.03.128] [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] Open
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Meyer A, Janardhan R, Hwang M, Farasatpour M, Margenthaler J, Virgo K, Johnson F. Metastatic Breast Cancer In Patients With Schizophrenia. J Surg Res 2011. [DOI: 10.1016/j.jss.2010.11.748] [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: 11/17/2022]
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Nael E, Pemberton P, Hwang M, Rahmani S, Raghavan V. What are the predictive factors of positive resection margin in infiltrating lobular carcinoma treated by breast conserving surgery? Eur J Surg Oncol 2009. [DOI: 10.1016/j.ejso.2009.07.101] [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: 10/20/2022] Open
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Kim S, Hwang M, Park Y, Park S, Kim Y, Ryu K, Lee J, Park Y, Kim N, Park S. Prognostic impact of response to second-line chemotherapy on overall survival of patients with advanced gastric cancer. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e15551] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e15551 Background: It has been debated on whether tumor response to first-line chemotherapy (CT) would be reliable predictor for overall survival (OS) of cancer patients (pts). In case of advanced gastric cancer (AGC), many pts receive 2nd line CT after failure to 1st line treatment, so response to 2nd line CT as well as 1st line could affect OS. Methods: We retrieved clinical data of a total of 1,335 pts with AGC treated with palliative CT from January 2000 to December 2006 in National Cancer Center, Korea, including 757 pts who also received 2nd line CT. Responses to 1st and 2nd line CT were evaluable in 504 pts. Retrospective analysis was done to find correlation between objective tumor response to 1st and 2nd line CT and OS of the 504 pts, whom we divided into 4 groups: responders to both 1st and 2nd line CT (RR group); responders to 1st but not to 2nd line CT (RN group); responders to 2nd but not to 1st line CT (NR group); and nonresponders to both 1st and 2nd line CT (NN group). Results: Objective response rate of 1st and 2nd line CT was 41.7% and 12.3%, respectively. Responders to 1st line CT had a trend to respond to 2nd line CT (ORR of 2nd line CT in responders vs nonresponders to 1st line CT: 15.7% vs 9.9%, p = 0.049). 33/177/29/265 pts were assigned to each of RR/RN/NR/NN group, respectively. With median follow-up of 48.7 mo (range 23.2 - 93.7), median OS was 12.7 mo (95% CI 11.8–13.6). Baseline characteristics were balanced between 4 groups except higher hemoglobin and serum albumin level in RR group, younger median age in NN group, and fewer pts with poor performance status or poorly differentiated histology in NR group. Overall survival of RR, RN, NR, and NN group was 31.8 mo, 15.5 mo, 18.9 mo, and 9.2 mo, respectively (p<0.001). Multivariate analysis revealed relapsed disease after curative surgery, well-differentiated histology, absence of pulmonary metastasis, higher serum albumin level, lower serum bilirubin and alkaline phosphatase level, response to both of 1st line and 2nd line CT were reliable factors for favorable survival. Conclusions: Among the patients who received 2nd line chemotherapy for AGC, response to 2nd line CT was strongly associated with OS regardless of previous response to 1st line CT. No significant financial relationships to disclose.
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Affiliation(s)
- S. Kim
- National Cancer Center, Goyang, Republic of Korea
| | - M. Hwang
- National Cancer Center, Goyang, Republic of Korea
| | - Y. Park
- National Cancer Center, Goyang, Republic of Korea
| | - S. Park
- National Cancer Center, Goyang, Republic of Korea
| | - Y. Kim
- National Cancer Center, Goyang, Republic of Korea
| | - K. Ryu
- National Cancer Center, Goyang, Republic of Korea
| | - J. Lee
- National Cancer Center, Goyang, Republic of Korea
| | - Y. Park
- National Cancer Center, Goyang, Republic of Korea
| | - N. Kim
- National Cancer Center, Goyang, Republic of Korea
| | - S. Park
- National Cancer Center, Goyang, Republic of Korea
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Kim J, Lee S, Hwang M, Ko S, Min C, Kim-Ha J. Bunched specifically regulates alpha/beta mushroom body neuronal cell proliferation during metamorphosis. Neuroscience 2009; 161:46-52. [PMID: 19328837 DOI: 10.1016/j.neuroscience.2009.03.054] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2008] [Revised: 03/17/2009] [Accepted: 03/19/2009] [Indexed: 01/18/2023]
Abstract
In Drosophila, mushroom bodies are centers for higher order behavior. Mushroom body neurons consist of three distinct types of neuronal cells, alpha, alpha'/beta', and alpha/beta, which are all generated by the same neuroblasts. The mechanism by which a single neuroblast generates three different types of mushroom body neurons is a compelling area of research. Here, we report that bunched (bun) is expressed only in alpha/beta-type mushroom body neurons and that mutation of the bun gene only affects the development of alpha/beta neurons. Reduced bun expression causes decreased and premature arrest of neuroblast cell division, which results in reduced numbers of alpha/beta neurons and thin axon bundled formation. We propose that bun acts as a specific factor in regulating neuroblast mitotic activity during the development of alpha/beta neurons.
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Affiliation(s)
- J Kim
- Department of Molecular Biology, College of Life Sciences, Sejong University, 98 Kunja-dong, Kwangjin-ku, Seoul, 143-747, South Korea
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Abstract
Target of Rapamycin (TOR) signaling, originally discovered as the pathway affected by an antifungal macrolide, exemplifies the potential of medicinal chemistry as a discovery tool. Three decades from its identification, signaling involving the TOR kinase has evolved into a complex network with a crucial role in vertebrate growth control. Specifically, it integrates signals to coordinate cell growth (i.e., enhanced mass and size) and cell cycle progression with sufficiency of nutrients, energy, and growth factors. In this review, we discuss multiple aspects of TOR signaling, including cellular regulators and mediators, human diseases related to TOR dysregulation such as cancer, and signaling nodes in the pathway amenable to targeted drug inhibition. The functions and mechanisms of TOR during embryonic development highlight the dynamic role of TOR signaling and reveal additional functions beyond cell growth control. Embryonic TOR signaling has differential tissue-specific and temporal effects, and is involved in organogenesis, sexual differentiation, and epithelial-to-mesenchymal transition signaling. Molecular mechanisms that may contribute to embryonic-specific TOR functions are also examined here. Finally, this review discusses the complex signaling of mTOR in cancer and the development of mTOR inhibitors for cancer therapy.
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Affiliation(s)
- M Hwang
- Department of Radiation Oncology, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
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Kim D, Hwang M, Lee H. 83. Orthodromic inching test of ulnar mixed nerve for ulnar neuropathy at elbow. Clin Neurophysiol 2008. [DOI: 10.1016/j.clinph.2007.11.133] [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: 11/28/2022]
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Hwang M. Radiosensitization of Lung Cancer Tumors with Pan-Caspase Inhibitor Z-VAD. Int J Radiat Oncol Biol Phys 2007. [DOI: 10.1016/j.ijrobp.2007.07.1931] [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: 10/22/2022]
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Kang YN, Oh HK, Chang YC, Kim HC, Lee SL, Hwang M, Park KK. Systemic Herpes Simplex Virus Infection Following Cadaveric Renal Transplantation: A Case Report. Transplant Proc 2006; 38:1346-7. [PMID: 16797299 DOI: 10.1016/j.transproceed.2006.02.100] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [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: 09/28/2005] [Indexed: 11/23/2022]
Abstract
Herpes simplex virus (HSV) infection usually occurs in immunocompromised or severely debilitated patients. It is not so common in patients with renal transplants. The diagnosis can only be made histologically. It usually occurs during or shortly after treatment of graft rejection with high-dose steroids. We have recently experienced a case of HSV esophagitis and nephropathy in the renal allograft biopsy, which was identified by histology, immunostaining, and electron microscopy. A 43-year-old woman underwent cadaveric renal transplantation with cyclosporine and prednisolone treatment. Twelve months later, she developed renal insufficiency and proteinuria. Allograft renal biopsy showed some evidence of acute rejection. She was treated with 3 successive days of methylprednisolone (1.0 g/d) intravenously and continued tapering of steroids. Three weeks after steroid pulse therapy, she had throat pain, oral cavity ulcer, dysphagia, and febrile sensation. Esophagoscopy revealed multiple confluent ulcers in the whole esophagus, and biopsy showed enlarged epithelial cells with prominent nuclei. Immunohistochemically, the epithelial cells were positive with a monoclonal antibody to HSV type 1. She was started on acyclovir intravenously, which was continued for a week. After a week, her symptoms began to improve and repeat endoscopy showed no residual esophagitis. A renal allograft infection with HSV can persist in heavily immunosuppressed patients with recurrent rejection episodes. HSV mainly affects tubular cells causing necrosis, a major reason for functional deterioration. A biopsy is required for diagnosis.
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Affiliation(s)
- Y N Kang
- Department of Pathology, Keimyung University School of Medicine, Daegu, Republic of Korea
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Hwang M, Kalinin A, Morasso M. The temporal and spatial expression of the novel Ca++-binding proteins, Scarf and Scarf2, during development and epidermal differentiation. Gene Expr Patterns 2005; 5:801-8. [PMID: 15922673 PMCID: PMC1283088 DOI: 10.1016/j.modgep.2005.03.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [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: 01/20/2005] [Revised: 03/14/2005] [Accepted: 03/28/2005] [Indexed: 11/23/2022]
Abstract
During the process of epidermal differentiation, intracellular and extracellular calcium (Ca++) concentrations induce an array of signaling pathways . Keratinocytes follow a complex Ca++-dependent program of differentiation moving from the basal proliferative layer, through the spinous and granular differentiated layers to ultimately culminate in the formation of the cornified layer of the epidermis. Members of the Ca++-binding proteins play a central role in the transduction of Ca++ signals. Utilizing a suppressive subtractive hybridization screen comparing basal and differentiated keratinocytes, we identified the novel Ca++-binding protein genes, Scarf (skin Calmodulin-related factor) and Scarf2, which have homology to calmodulin (CaM). In this study, we present a comprehensive analysis of the expression pattern for Scarf and Scarf2 transcripts and proteins in the developing mouse. To examine Scarf2 expression during embryogenesis, we performed in situ hybridization, and detected expression in the hair follicle, skin and nasal epithelium. These results showed substantial overlap with the previously reported Scarf gene expression [Hwang, M., Morasso, M.I., 2003. The novel murine Ca2+-binding protein, Scarf, is differentially expressed during epidermal differentiation. J. Biol. Chem. 278, 47827-47833]. Comparing the expression patterns of Scarf and Scarf2 proteins in neonatal and adult mouse skin with several structural epidermal proteins, i.e. keratin 14 (K14), keratin 1 (K1), loricrin (LOR) and filaggrin (FIL) showed that their expression overlaps K1, an early marker of keratinocyte differentiation. Interestingly, Scarf and Scarf2 were also detected in the tongue and oral epithelia, rib bone undergoing ossification and in the medullar region of thymus.
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Affiliation(s)
| | | | - M.I. Morasso
- * Corresponding author. Tel.: +1 301 435 7842; fax: +1 301 435 7910. E-mail address: (M.I. Morasso)
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Chung S, Hedlund E, Hwang M, Kim DW, Shin BS, Hwang DY, Kang UJ, Isacson O, Kim KS. The homeodomain transcription factor Pitx3 facilitates differentiation of mouse embryonic stem cells into AHD2-expressing dopaminergic neurons. Mol Cell Neurosci 2005; 28:241-52. [PMID: 15691706 DOI: 10.1016/j.mcn.2004.09.008] [Citation(s) in RCA: 96] [Impact Index Per Article: 5.1] [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: 03/23/2004] [Revised: 09/16/2004] [Accepted: 09/17/2004] [Indexed: 10/26/2022] Open
Abstract
The A9 dopaminergic (DA) neuronal group projecting to the dorsal striatum is the most vulnerable in Parkinson's disease (PD). We genetically engineered mouse embryonic stem (ES) cells to express the transcription factors Nurr1 or Pitx3. After in vitro differentiation of Pitx3-expressing ES cells, the proportion of DA neurons expressing aldehyde dehydrogenase 2 (AHD2) increased, while the total number of DA neurons remained the same. The highest levels of AHD2 expression were observed in mouse A9 DA neurons projecting to the dorsal striatum. Furthermore, real-time PCR analyses of in vitro differentiated Pitx3-expressing ES cells revealed that genes highly expressed in A9 DA neurons were up-regulated. When transplanted into the mouse striatum, Pitx3-expressing cells generated an increased proportion of AHD2-expressing DA neurons. Contrastingly, in Nurr1-expressing ES cells, increases of all midbrain DA markers were observed, resulting in a higher total number of DA neurons in vitro and in vivo, whereas the proportion of AHD2-expressing DA neurons was not changed. Our data, using gain-of-function analysis of ES cells, suggest that Pitx3 may be important for specification and/or maintenance of A9-like neuronal properties, while Nurr1 influences overall midbrain DA specification. These findings may be important for modifying ES cells to generate an optimal cell source for transplantation therapy of PD.
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Affiliation(s)
- S Chung
- Udall Parkinson's Disease Research Center of Excellence, McLean Hospital/Harvard Medical School, Belmont, MA 02178, USA
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Abstract
Pure trigeminal motor neuropathy is a trigeminal motor paralysis unaccompanied by signs of trigeminal sensory or other cranial nerve involvement. We present a case of a 38-year-old man complaining of progressive weakness and wasting of the right masticatory muscles after a bout of mild cold symptoms. No sensory symptoms were present. History, neurologic examination, electrophysiologic studies, and magnetic resonance imaging of the brain led to the diagnosis of pure trigeminal motor neuropathy. The cause may have been an autoimmune reaction to a viral infection.
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Affiliation(s)
- Y K Kang
- Department of Rehabilitation Medicine, Korea University Medical Center Guro Hospital, Republic of Korea
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Abstract
This study investigated the proposition that children with specific language impairment (SLI) show a generalized slowing of response time (RT) across tasks compared to chronological-age (CA) peers. Three different theoretical models consistent with the hypothesis of generalized slowing--a proportional, linear, and nonlinear model--were examined using regression analyses of group RT data. Each model was an excellent fit with the RT data. The most parsimonious model indicated that the SLI group was proportionally slower than the CA group. Mean RTs of the SLI group were about one fifth slower across tasks than the CA group's mean RTs. Less slowing was evident for a subgroup of young children with expressive SLI than for children with mixed (expressive and receptive) SLI. Although the mean RT data reflected many individual SLI children's RT performance, not all SLI children showed generalized slowing.
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Affiliation(s)
- J Windsor
- Department of Communication Disorders, University of Minnesota, Minneapolis 55455, USA.
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Abstract
Twenty-three school-age children with language impairments (LI) and 46 typically achieving children participated in 2 auditory lexical decision tasks. Effects of phonological opacity (i.e., stress and vowel changes involved in forming derivatives from a base word) on word recognition were investigated. In one task, children made lexical decisions about phonologically transparent real derivatives (e.g., hatless) and pseudo derivatives (e.g., *quickless). In this task, children with LI showed only subtle deficits compared to their chronological-age (CA) peers. In the other task, children made lexical decisions about phonologically opaque real derivatives (e.g., acidity) and pseudo derivatives (e.g., *combinity) as well as transparent derivatives. In this task, children with LI were substantially less accurate than were CA children in identifying phonologically opaque real derivatives and were slower to do so than both CA and language-age (LA) children. Children in the LI and LA groups were slower than children in the CA group to identify phonologically opaque pseudo derivatives. These results are interpreted within a limited processing capacity account of language impairment.
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Affiliation(s)
- J Windsor
- Department of Communication Disorders, University of Minnesota, Minneapolis 55455, USA.
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Castellví-Bel S, Sheikhavandi S, Telatar M, Tai LQ, Hwang M, Wang Z, Yang Z, Cheng R, Gatti RA. New mutations, polymorphisms, and rare variants in the ATM gene detected by a novel SSCP strategy. Hum Mutat 1999; 14:156-62. [PMID: 10425038 DOI: 10.1002/(sici)1098-1004(1999)14:2<156::aid-humu7>3.0.co;2-e] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.0] [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] [Indexed: 11/10/2022]
Abstract
The gene for ataxia-telangiectasia, ATM, spans about 150 kb of genomic DNA. ATM mutations are found along the entire gene, with no evidence of a mutational hot spot. Using DNA as the starting material, we screened the ATM gene in 92 A-T patients, using an optimized single-strand conformation polymorphism (SSCP) technique that detected all previously known mutations in the polymerase chain reaction (PCR) segments being analyzed. To expedite screening, we sequentially loaded the SSCP gels with three different sets of PCR products that were pretested to avoid overlapping patterns. Many of the DNA changes we detected were intragenic polymorphisms. Of an expected 177 unknown mutations, we detected approximately 70%, mostly protein truncating mutations (that would have been detectable by protein truncation testing if RNA starting material had been available). Mutations have now been defined for every exon of the ATM gene. Herein, we present 35 new mutations and 34 new intragenic polymorphisms or rare variants within the ATM gene. This is the most comprehensive compilation of ATM polymorphisms assembled to date. Defining polymorphic sites as well as mutations in the ATM gene will be of great importance in designing automated methods for detecting mutations.
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Affiliation(s)
- S Castellví-Bel
- Department of Pathology, School of Medicine, University of California at Los Angeles, Los Angeles, California 90095-1732, USA
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46
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Abstract
More than a hundred naturally occurring mutations of human glucose-6-phosphate dehydrogenase (G6PD) have been identified at the amino acid level. The abundance of distinct mutation sites and their clinical manifestations make this enzyme ideal for structure-function analysis studies. We present here a sequence and structure combined analysis by which the severity of clinical symptoms resulting from point mutations of this enzyme is correlated with quantified degrees of amino acid conservation within 23 G6PD sequences from different organisms. Our analysis verifies, on a quantitative basis, a widely held notion that clinically severer mutations of G6PD usually occur at conserved amino acids. However, marked exceptions to this general trend exist which are most notably revealed by a number of mutations associated with chronic nonspherocytic hemolytic anemia (class I variants). When mapped onto a homology-derived structural model of human G6PD, these class I mutational sites of low amino acid conservation appear to localize in two spatially distinct clusters, both of which are populated with mutations consisting mainly of clinically severer variants (i.e. class I and class II). These results of computer-assisted analyses contribute to a further understanding of the structure-function relationships of human G6PD deficiency.
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Affiliation(s)
- Y S Cheng
- Graduate Institute of Life Sciences, National Defense Medical Center, Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
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47
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Abstract
The effect of productivity (a correlate of suffix frequency) on students' derivational suffix use was investigated with students with and without language-learning disabilities (LLD). Sixty-nine elementary- to middle-school-age students participated in an elicitation task (in which they produced derived forms) and a forced-choice task (in which they selected derived forms) to label nonsense objects and events. In each task, students used highly productive suffixes to convey a given meaning. For example, students used the highly productive suffix er rather than the less productive suffix ant to convey an agentive meaning and used the more productive suffix let instead of the unproductive suffix kin to convey a diminutive meaning. Also, productivity appeared to guide accuracy of suffix use across meanings. For example, the agentive suffix er was produced with much higher accuracy than the less productive diminutive suffix let. In general, patterns of performance within and across meanings were the same for students with and without LLD. LLD students were less accurate in determining the meanings conveyed by derivational suffixes than typically achieving students matched for chronological age. However, their performance was similar to typically achieving students with comparable language skills.
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Affiliation(s)
- J Windsor
- Department of Communication Disorders, University of Minnesota, Minneapolis 55455, USA.
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48
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Spitler LE, Harris D, Cox J, Hwang M, Talmadge J, Matyas G, Alving C. CLINICAL TRIALS OF OncoVax-PTM (PROSTATE CANCER VACCINE) IN PATIENTS WITH PROSTATE CANCER. J Immunother 1997. [DOI: 10.1097/00002371-199709000-00085] [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: 11/25/2022]
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49
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Brookman KW, Lamerdin JE, Thelen MP, Hwang M, Reardon JT, Sancar A, Zhou ZQ, Walter CA, Parris CN, Thompson LH. ERCC4 (XPF) encodes a human nucleotide excision repair protein with eukaryotic recombination homologs. Mol Cell Biol 1996; 16:6553-62. [PMID: 8887684 PMCID: PMC231657 DOI: 10.1128/mcb.16.11.6553] [Citation(s) in RCA: 96] [Impact Index Per Article: 3.4] [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] [Indexed: 02/02/2023] Open
Abstract
ERCC4 is an essential human gene in the nucleotide excision repair (NER) pathway, which is responsible for removing UV-C photoproducts and bulky adducts from DNA. Among the NER genes, ERCC4 and ERCC1 are also uniquely involved in removing DNA interstrand cross-linking damage. The ERCC1-ERCC4 heterodimer, like the homologous Rad10-Rad1 complex, was recently found to possess an endonucleolytic activity that incises on the 5' side of damage. The ERCC4 gene, assigned to chromosome 16p13.1-p13.2, was previously isolated by using a chromosome 16 cosmid library. It corrects the defect in Chinese hamster ovary (CHO) mutants of NER complementation group 4 and is implicated in complementation group F of the human disorder xeroderma pigmentosum. We describe the ERCC4 gene structure and functional cDNA sequence encoding a 916-amino-acid protein (104 kDa), which has substantial homology with the eukaryotic DNA repair and recombination proteins MEI-9 (Drosophila melanogaster), Rad16 (Schizosaccharomyces pombe), and Rad1 (Saccharomyces cerevisiae). ERCC4 cDNA efficiently corrected mutants in rodent NER complementation groups 4 and 11, showing the equivalence of these groups, and ERCC4 protein levels were reduced in mutants of both groups. In cells of an XP-F patient, the ERCC4 protein level was reduced to less than 5%, consistent with XPF being the ERCC4 gene. The considerable identity (40%) between ERCC4 and MEI-9 suggests a possible involvement of ERCC4 in meiosis. In baboon tissues, ERCC4 was expressed weakly and was not significantly higher in testis than in nonmeiotic tissues.
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Affiliation(s)
- K W Brookman
- Biology and Biotechnology Research Program, Lawrence Livermore National Laboratory, Livermore, California 94551-0808, USA
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50
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Hwang M, Ahn CH, Pine PS, Yin JJ, Hrycyna CA, Licht T, Aszalos A. Effect of combination of suboptimal concentrations of P-glycoprotein blockers on the proliferation of MDR1 gene expressing cells. Int J Cancer 1996; 65:389-97. [PMID: 8575863 DOI: 10.1002/(sici)1097-0215(19960126)65:3<389::aid-ijc19>3.0.co;2-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Pharmacologically active in vivo doses of P-glycoprotein (Pgp) blockers, specifically verapamil, Cremophor EL and PSC833 cause toxicity in addition to that from the concomitantly used cancer chemotherapeutic drugs. It was shown before that these blockers cause different types of toxicities in vivo. We found that these 3 chemically distinct Pgp blockers exert different biophysical effects on the membranes of L1210 MDR cells. They also affect the general metabolism of these cells differently, but all block affinity labeling of Pgp. We could also show that the combination of suboptimal doses of these blockers can restore the uptake of the Pgp substrate rhodamine 123 into L1210MDR, 3T3MDR and KB-VI cells and can reduce the survival rate of these cells when treated in combination with daunorubicin. Our results suggest that the combination of suboptimal doses of these Pgp blockers may be advantageous in clinical practice.
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Affiliation(s)
- M Hwang
- Center for Drug Evaluation and Research, Food and Drug Administration, Washington, DC 20204, USA
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