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Zolin A, Broner SW, Yoo A, Guan I, Lakhani S, Trabilsy M, Klebanoff L, Vo M, Sarva H. Dystonia phenomenology and treatment response in migraine. Headache 2023; 63:255-263. [PMID: 36794299 DOI: 10.1111/head.14467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 09/12/2022] [Accepted: 09/12/2022] [Indexed: 02/17/2023]
Abstract
OBJECTIVE To describe the phenomenology of cervical dystonia (CD) in patients with migraine and the effect of its treatment on migraine frequency. BACKGROUND Preliminary studies demonstrate that treatment of CD with botulinum toxin in those with migraine can improve both conditions. However, the phenomenology of CD in the setting of migraine has not been formally described. METHODS We conducted a single-center, descriptive, retrospective case series of patients with a verified diagnosis of migraine who were referred to our movement disorder center for evaluation of co-existing, untreated CD. Patient demographics, characteristics of migraine and CD, and effects of cervical onabotulinumtoxinA (BoTNA) injections were recorded and analyzed. RESULTS We identified 58 patients with comorbid CD and migraine. The majority were female (51/58 [88%]) and migraine preceded CD in 72% (38/53) of patients by a mean (range) of 16.0 (0-36) years. Nearly all the patients had laterocollis (57/58) and 60% (35/58) had concurrent torticollis. Migraine was found to be both ipsilateral and contralateral to the dystonia in a comparable proportion of patients (11/52 [21%] vs. 15/52 [28%]). There was no significant relationship between migraine frequency and dystonia severity. Treatment of CD with BoTNA reduced migraine frequency in most patients (15/26 [58%] at 3 months and 10/16 [63%] at 12 months). CONCLUSIONS In our cohort, migraine often preceded dystonia symptoms and laterocollis was the most described dystonia phenotype. The lateralization and severity/frequency of these two disorders were unrelated, but dystonic movements were a common migraine trigger. We corroborated previous reports that cervical BoTNA injections reduced migraine frequency. Providers treating patients with migraine and neck pain who are not fully responding to typical therapies should screen for possible CD as a confounding factor, which when treated can reduce migraine frequency.
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Affiliation(s)
- Aryeh Zolin
- Department of Neurology, Weill Cornell Medical College, New York, New York, USA.,Neurology Residency Program, Department of Neurology, New York Presbyterian Hospital, New York, New York, USA
| | - Susan W Broner
- Weill Cornell Medicine Headache Program, Department of Neurology, Weill Cornell Medical College, New York, New York, USA
| | - Andrea Yoo
- Neurology Residency Program, Department of Neurology, New York Presbyterian Hospital, New York, New York, USA
| | - Ivan Guan
- Department of Neurology, Weill Cornell Medical College, New York, New York, USA
| | - Shenela Lakhani
- Department of Neurology, Weill Cornell Medical College, New York, New York, USA.,Center for Neurogenetics, Feil Family Brain and Mind Research Institute, Weill Cornell Medical College, New York, New York, USA
| | - Maissa Trabilsy
- Department of Neurology, Weill Cornell Medical College, New York, New York, USA
| | - Louise Klebanoff
- Department of Neurology, Weill Cornell Medical College, New York, New York, USA
| | - Mary Vo
- Department of Neurology, Weill Cornell Medical College, New York, New York, USA
| | - Harini Sarva
- Parkinson's Disease & Movement Disorders Institute, Department of Neurology, Weill Cornell Medical College, New York, New York, USA
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Kairn T, Talkhani S, Charles PH, Chua B, Lin CY, Livingstone AG, Maxwell SK, Poroa T, Simpson-Page E, Spelleken E, Vo M, Crowe SB. Determining tolerance levels for quality assurance of 3D printed bolus for modulated arc radiotherapy of the nose. Phys Eng Sci Med 2021; 44:1187-1199. [PMID: 34529247 DOI: 10.1007/s13246-021-01054-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 08/31/2021] [Indexed: 10/20/2022]
Abstract
Given the existing literature on the subject, there is obviously a need for specific advice on quality assurance (QA) tolerances for departments using or implementing 3D printed bolus for radiotherapy treatments. With a view to providing initial suggested QA tolerances for 3D printed bolus, this study evaluated the dosimetric effects of changes in bolus geometry and density, for a particularly common and challenging clinical situation: specifically, volumetric modulated arc therapy (VMAT) treatment of the nose. Film-based dose verification measurements demonstrated that both the AAA and the AXB algorithms used by the Varian Eclipse treatment planning system (Varian Medical Systems, Palo Alto, USA) were capable of providing sufficiently accurate dose calculations to allow this planning system to be used to evaluate the effects of bolus errors on dose distributions from VMAT treatments of the nose. Thereafter, the AAA and AXB algorithms were used to calculate the dosimetric effects of applying a range of simulated errors to the design of a virtual bolus, to identify QA tolerances that could be used to avoid clinically significant effects from common printing errors. Results were generally consistent, whether the treatment target was superficial and treated with counter-rotating coplanar arcs or more-penetrating and treated with noncoplanar arcs, and whether the dose was calculated using the AAA algorithm or the AXB algorithm. The results of this study suggest the following QA tolerances are advisable, when 3D printed bolus is fabricated for use in photon VMAT treatments of the nose: bolus relative electron density variation within [Formula: see text] (although an action level at [Formula: see text] may be permissible); bolus thickness variation within [Formula: see text] mm (or 0.5 mm variation on opposite sides); and air gap between bolus and skin [Formula: see text] mm. These tolerances should be investigated for validity with respect to other treatment modalities and anatomical sites. This study provides a set of baselines for future comparisons and a useful method for identifying additional or alternative 3D printed bolus QA tolerances.
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Affiliation(s)
- T Kairn
- Cancer Care Services, Royal Brisbane and Women's Hospital, Brisbane, QLD, Australia. .,Herston Biofabrication Institute, Metro North Hospital and Health Service, Brisbane, QLD, Australia. .,School of Information Technology and Electrical Engineering, University of Queensland, Brisbane, QLD, Australia. .,School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD, Australia.
| | - S Talkhani
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD, Australia
| | - P H Charles
- Herston Biofabrication Institute, Metro North Hospital and Health Service, Brisbane, QLD, Australia.,School of Information Technology and Electrical Engineering, University of Queensland, Brisbane, QLD, Australia.,School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD, Australia
| | - B Chua
- Cancer Care Services, Royal Brisbane and Women's Hospital, Brisbane, QLD, Australia.,Faculty of Medicine, University of Queensland, Brisbane, QLD, Australia
| | - C Y Lin
- Cancer Care Services, Royal Brisbane and Women's Hospital, Brisbane, QLD, Australia.,Faculty of Medicine, University of Queensland, Brisbane, QLD, Australia
| | - A G Livingstone
- Cancer Care Services, Royal Brisbane and Women's Hospital, Brisbane, QLD, Australia
| | - S K Maxwell
- Cancer Care Services, Royal Brisbane and Women's Hospital, Brisbane, QLD, Australia
| | - T Poroa
- Cancer Care Services, Royal Brisbane and Women's Hospital, Brisbane, QLD, Australia
| | - E Simpson-Page
- Cancer Care Services, Royal Brisbane and Women's Hospital, Brisbane, QLD, Australia
| | - E Spelleken
- GenesisCare Rockhampton, Rockhampton Hospital, Rockhampton, QLD, Australia
| | - M Vo
- Cancer Care Services, Royal Brisbane and Women's Hospital, Brisbane, QLD, Australia
| | - S B Crowe
- Cancer Care Services, Royal Brisbane and Women's Hospital, Brisbane, QLD, Australia.,Herston Biofabrication Institute, Metro North Hospital and Health Service, Brisbane, QLD, Australia.,School of Information Technology and Electrical Engineering, University of Queensland, Brisbane, QLD, Australia.,School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD, Australia
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Lee A, Hellmers N, Vo M, Wang F, Popa P, Barkan S, Patel D, Campbell C, Henchcliffe C, Sarva H. Can google glass™ technology improve freezing of gait in parkinsonism? A pilot study. Disabil Rehabil Assist Technol 2020; 18:327-332. [PMID: 33216658 DOI: 10.1080/17483107.2020.1849433] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
PURPOSE Freezing of gait (FOG) is a disabling phenomenon defined by the periodic absence or reduction of forward progression of the feet despite the intention to walk. We sought to understand whether Google Glass (GG), a lightweight wearable device that provides simultaneous visual-auditory cues, might improve FOG in parkinsonism. METHODS Patients with parkinsonism and FOG utilized GG custom-made auditory-visual cue applications: "Walk With Me" and "Unfreeze Me" in a single session intervention. We recorded ambulation time with and without GG under multiple conditions including 25 feet straight walk, dual task of performing serial 7's while straight walking, 180 degree turn after walking 25 feet, and walking through a doorway. FOG and patient experience questionnaires were administered. RESULTS Using the GG "Walk With Me" program, improvements were noted in the following: average 25 feet straight walk by 0.32 s (SD 2.12); average dual task of serial 7's and 25 feet straight walk by 1.79 s (SD 2.91); and average walk through doorway by 0.59 s (SD 0.81). Average 180 degree turn after 25 feet walk worsened by 1.89 s (SD 10.66). Using the "Unfreeze Me" program, only the average dual task of serial 7's and 25 feet straight walk improved (better by 0.82 s (SD 3.08 sec). All other tasks had worse performance in terms of speed of completion. CONCLUSION This feasibility study provides preliminary data suggesting that some walking tasks may improve with GG, which uses various musical dance programs to provide visual and auditory cueing for patients with FOG.IMPLICATIONS FOR REHABILITATIONFreezing of gait in parkinsonian syndromes is a disabling motor block described by patients as having their feet stuck to the floor leading to difficulty in initiation of gait and increased risk for falls.Wearable assistive devices such as Google Glass™ use visual and auditory cueing that may improve gait pattern in patients with freezing of gait.Augmented reality programs using wearable assistive devices are a home-based therapy, with the potential for reinforcing physical therapy techniques; this is especially meaningful during the COVID-19 pandemic when access to both medical and rehabilitative care has been curtailed.
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Affiliation(s)
- Andrea Lee
- Weill Cornell Medical College, New York, NY, USA
| | | | - Mary Vo
- Weill Cornell Medical College, New York, NY, USA
| | - Fei Wang
- Weill Cornell Medical College, New York, NY, USA
| | - Paul Popa
- Weill Cornell Medical College, New York, NY, USA
| | | | - Dylon Patel
- Weill Cornell Medical College, New York, NY, USA
| | | | | | - Harini Sarva
- Weill Cornell Medical College, New York, NY, USA
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Kostyukevich M, Van Der Bijl P, Mertens B, Vo M, Marsan N, Delgado V, Bax J. Left ventricular volumes at baseline and outcome in heart failure patients undergoing cardiac resynchronization therapy. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Studies evaluating the relationship between baseline left ventricular (LV) volumes and long-term prognosis in heart failure (HF) patients undergoing cardiac resynchronization therapy (CRT) are lacking.
Purpose
To evaluate the association of LV end-systolic and end-diastolic volumes (ESV and EDV) with long-term prognosis in patients with HF treated with CRT.
Methods
Patients from an ongoing institutional HF registry who received CRT according to contemporary guidelines were included. All patients underwent standard transthoracic echocardiography. LV volumes were measured using the biplane method during off-line analysis. Primary end-point included all-cause mortality, implantation of left ventricular assist device or heart transplantation, which were assessed according to the national death registry and case records.
Results
In total, 1165 patients with feasible LV volume assessment were included (mean age 67±10 years; 74.8% males; 55.3% with non-ischemic aetiology of HF). After a median follow-up of 75 (40; 123) months, the primary end-point occurred in 708 (60.8%) patients. Median baseline LV ESV was 151 (108; 198) ml and EDV was 202 (156; 258) ml. All patients were divided into quartiles according to the baseline EDV and ESV: those with larger volumes were significantly younger, more frequently male and had longer QRS durations (p<0.001). Heart failure aetiology, glomerular filtration rate, quality of life and 6-minute walking test distance did not differ significantly between the groups (p>0.05). To investigate the association between long-term prognosis and baseline LV volumes (EDV and ESV), a Cox proportional hazards model was constructed with variables known to influence the mortality of HF patients (age, gender, aetiology, QRS duration, and estimated glomerular filtration rate). When separately included in a multivariate analysis, baseline LV ESV and LV EDV were both independently associated with the primary end-point (p<0.001). To demonstrate hazard change across the range of LV ESV and EDV as continuous variables, an adjusted (for covariates influencing HF mortality) spline curve was drawn, showing an increased mortality risk when the baseline LV ESV and EDV are larger than 100 ml and 200 ml, respectively (Figure).
Conclusion
LV volumes before CRT implantation are independently associated with prognosis during long-term follow-up. Our findings indicate the importance of taking baseline LV remodelling into consideration to identify patients at high mortality risk after CRT implantation.
Funding Acknowledgement
Type of funding source: Public grant(s) – EU funding. Main funding source(s): The author acknowledges funding received from the European Society of Cardiology in form of an ESC Training Grant
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Affiliation(s)
- M Kostyukevich
- Leiden University Medical Centre, Leiden, Netherlands (The)
| | - P Van Der Bijl
- Leiden University Medical Centre, Leiden, Netherlands (The)
| | - B Mertens
- Leiden University Medical Centre, Leiden, Netherlands (The)
| | - M Vo
- Leiden University Medical Centre, Leiden, Netherlands (The)
| | - N.A Marsan
- Leiden University Medical Centre, Leiden, Netherlands (The)
| | - V Delgado
- Leiden University Medical Centre, Leiden, Netherlands (The)
| | - J.J Bax
- Leiden University Medical Centre, Leiden, Netherlands (The)
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Barone DA, Wang F, Ravdin L, Vo M, Lee A, Sarva H, Hellmers N, Krieger AC, Henchcliffe C. Comorbid neuropsychiatric and autonomic features in REM sleep behavior disorder. Clin Park Relat Disord 2020; 3:100044. [PMID: 34316629 PMCID: PMC8298794 DOI: 10.1016/j.prdoa.2020.100044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 12/27/2019] [Accepted: 01/26/2020] [Indexed: 11/28/2022] Open
Abstract
Objective Our aim is to define the extent of comorbidities in order to improve clinical care of patients with idiopathic rapid eye movement sleep behavior disorder (iRBD) utilizing the REM Sleep Behavior Disorder Associations with Parkinson's Disease Study (RAPiDS) cohort. Methods Consecutive adult study participants with iRBD confirmed on polysomnogram (PSG) were prospectively recruited from the Weill Cornell Center for Sleep Medicine. Evaluations comprised multiple facets of sleep, neurological, autonomic, and psychiatric function. Results Participants evaluated included 30 individuals with iRBD, with mean 1.5 ± 2.3 years from PSG to neuropsychiatric evaluation. Mean age was 59.5 ± 16.0 years at time of PSG, and 6/30 were women. Urinary difficulties were reported in 14/30 (47%): slight 7 (23%), mild 4 (13%), moderate 2 (7%), and severe 1 (3.0%). Ten out of 29 (34%) had abnormal Montreal Cognitive Assessment (MoCA) scores and the mean was 26.5 ± 3.2. The distribution of MoCA scores was significantly associated with urinary problems insofar as the more severe urinary problems were, the lower the MoCA scores (p = 0.04). Conclusions In this RAPiDS cohort, we detected an unexpectedly high occurrence of non-motor dysfunction. Our results point to the need for screening patients with iRBD for complaints that are actionable, for example those affecting mood, cognition, urinary function, and bowel function. We propose the term RBD+ to be used to identify such individuals. For the quality of life in patients diagnosed with RBD, a closer look by the clinician should be enacted, with appropriate referrals and workup. Comorbidities in idiopathic rapid eye movement sleep behavior disorder (iRBD) is further defined. REM Sleep Behavior Disorder Associations with Parkinson's Disease Study (RAPiDS) cohort There was a high occurrence of non-motor dysfunction in this cohort. The need for screening patients with iRBD for complaints that are actionable was demonstrated. We proposed the term “RBD+” to be used to identify such individuals.
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Affiliation(s)
- Daniel A. Barone
- Corresponding author at: Weill Cornell Medical College, Center for Sleep Medicine, 425 East 61st 5th Floor, New York, NY 10065, United States of America.
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Barone DA, Henchcliffe C, Vo M, Ravdin L, Hellmers N, Hanineva A, Degrazia M, Augelli D, Ebben MR, Reynolds SA, McManus K, Krieger AC. 0685 Preliminary Data from the REM Sleep Behavior Disorder Associations with Parkinson’s Disease Study (RAPiDS). Sleep 2018. [DOI: 10.1093/sleep/zsy061.684] [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)
- D A Barone
- Weill Cornell Medical College, New York, NY
| | | | - M Vo
- Weill Cornell Medical College, New York, NY
| | - L Ravdin
- Weill Cornell Medical College, New York, NY
| | - N Hellmers
- Weill Cornell Medical College, New York, NY
| | - A Hanineva
- Weill Cornell Medical College, New York, NY
| | - M Degrazia
- Weill Cornell Medical College, New York, NY
| | - D Augelli
- Weill Cornell Medical College, New York, NY
| | - M R Ebben
- Weill Cornell Medical College, New York, NY
| | | | - K McManus
- Weill Cornell Medical College, New York, NY
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Liu S, Tangri N, Ravandi A, Toleva O, Hiebert B, Elbarouni B, Vo M, Minhas K, Ducas J, Rigatto C, Kass M. COMPARISON OF IN-STENT RESTENOSIS RATES AFTER PERCUTANEOUS CORONARY INTERVENTION IN PATIENTS WITH HEMODIALYSIS VERSUS PERITONEAL DIALYSIS. Can J Cardiol 2016. [DOI: 10.1016/j.cjca.2016.07.186] [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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Bhindi R, Vo M, Ducas J, Ravandi A, Kass M. ROTATIONAL ATHERECTOMY IN UNCROSSABLE AND UNDILATABLE LESIONS: OUTCOMES POST SECOND-GENERATION DRUG ELUTING STENTS. Can J Cardiol 2015. [DOI: 10.1016/j.cjca.2015.07.061] [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: 11/16/2022] Open
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Vo M, Wolfe J. Scene syntactic priming boosts lexical access. J Vis 2014. [DOI: 10.1167/14.10.867] [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: 11/24/2022] Open
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Wolfe J, Drew T, Vo M. You dont know where your eyes have been and that could be problem. J Vis 2014. [DOI: 10.1167/14.10.1191] [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: 11/24/2022] Open
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Poettcker D, Coupland K, Avery L, Vo M. Chronic Total Occlusion Percutaneous Coronary Intervention: Stenting the Proverbial Mountain. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.750] [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: 12/01/2022] Open
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Avery L, Ludwig S, Shaikh N, Minhas K, Rand CE, Throndson K, Kuttnig C, Vo M, Warner T, Friesen M, Tam J. Integrating Canadian Diabetes Standards into the Care of Patients with Acute Myocardial Infarction. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Wassef AW, Philipp R, Ducas J, Minhas K, Vo M, Kass M, Parmar G, Ravandi A, Hussain F. Quantification of the Determinants of Radiation Reduction in the Cardiac Catheterization Laboratory Using the Novel Eco™ System. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.240] [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] Open
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Vo M, Gavrilov Z, Oliva A. Image Memorability in the Eye of the Beholder: Tracking the Decay of Visual Scene Representations. J Vis 2013. [DOI: 10.1167/13.9.929] [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: 11/24/2022] Open
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Praveen K, Streiner N, Ruiz-Lorroya T, Garg M, Murali B, Hoffmaster S, Vo M, Broudy T, Mirsaidi C. 190 Patient-derived Tumor Xenografts in Combination with High Content Imaging Platform as Models for Oncology Drug Development. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)71988-3] [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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Chelvanathan A, Allan D, Philipp R, Ducas J, Minhas K, Vo M, Kass M, Parmar G, Ravandi A, Tam J, Jassal D, Hussain F. 185 Predictors of Good Neurologic Outcome Based on the CPC Score (Cerebral Performace Category) in Post Cardiac Arrest Return of Circulation Patients Undergoing Mild Therapeutic Hypothermia and Catheterization: The Importance of Immediate CPR. Can J Cardiol 2012. [DOI: 10.1016/j.cjca.2012.07.185] [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: 10/27/2022] Open
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Chelvanathan A, Allan D, Philipp R, Ducas J, Minhas K, Vo M, Kass M, Parmar G, Ravandi A, Tam J, Jassal D, Hussain F. 282 Incidence and Outcomes of Patients With Pneumonia Post Cardiac Arrest - A Pre-Specified Analysis of the Return of Spontaneous Circulation, Cooling and Catheterization Registry (ROSCCC Registry). Can J Cardiol 2012. [DOI: 10.1016/j.cjca.2012.07.265] [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: 11/24/2022] Open
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Vo M, Wolfe J. Does repeated search in scenes need memory? When contextual guidance fails, memory takes over. J Vis 2011. [DOI: 10.1167/11.11.1299] [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: 11/24/2022] Open
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Vo M, Smith T, Henderson J. The Dynamics of Gaze When Viewing Dynamic Faces. J Vis 2010. [DOI: 10.1167/10.7.135] [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: 11/24/2022] Open
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Affiliation(s)
- Mary Vo
- Weill Cornell Medical Center, New York, NY, USA
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Joo S, Vo M, Win P, Hussain I. Is skin testing helpful for the amide group local anesthetic? J Allergy Clin Immunol 2005. [DOI: 10.1016/j.jaci.2004.12.746] [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: 11/30/2022]
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Hahn E, Vo M, Hussain I. Omalizumab does not improve pulmonary function or Lessen medical therapy in patients with mild to severe persistent asthma after 6 months of treatment. J Allergy Clin Immunol 2005. [DOI: 10.1016/j.jaci.2004.12.318] [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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Jorgensen P, Breitkreutz BJ, Breitkreutz K, Stark C, Liu G, Cook M, Sharom J, Nishikawa JL, Ketela T, Bellows D, Breitkreutz A, Rupes I, Boucher L, Dewar D, Vo M, Angeli M, Reguly T, Tong A, Andrews B, Boone C, Tyers M. Harvesting the genome's bounty: integrative genomics. Cold Spring Harb Symp Quant Biol 2004; 68:431-43. [PMID: 15338646 DOI: 10.1101/sqb.2003.68.431] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- P Jorgensen
- Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada M5G 1X5
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Rubino CM, McPhee M, Vo M, Jungbluth GL. Application of real-time data assembly (RTDA) to a pivotal phase III pediatric trial: A proactive approach to population pharmacokinetic/pharmacodynamic (PK/PD) dataset creation. Clin Pharmacol Ther 2003. [DOI: 10.1016/s0009-9236(03)90595-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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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Vo M, Rubino CM, Cirincione BB, Bruss J, Jungbluth GL. Pharmacokinetic-pharmacodynamic analysis of data from a phase III trial of linezolid IV/PO for the treatment of resistant gram-positive bacterial infections in children. Clin Pharmacol Ther 2003. [DOI: 10.1016/s0009-9236(03)90628-x] [Citation(s) in RCA: 2] [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: 11/26/2022]
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Akmal KM, Dufour JM, Vo M, Higginson S, Kim KH. Ligand-dependent regulation of retinoic acid receptor alpha in rat testis: in vivo response to depletion and repletion of vitamin A. Endocrinology 1998; 139:1239-48. [PMID: 9492059 DOI: 10.1210/endo.139.3.5775] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Male animals are sterile due to testicular degeneration in the absence of retinoic acid (RA) or functional retinoic acid receptor-alpha (RAR alpha). This degeneration can be reversed by injecting retinol, a precursor of RA, into vitamin A-deficient (VAD) rats. To determine the relationship between this ligand-dependent testicular degeneration and regeneration and the expression levels of RAR alpha messenger RNA and protein, testes were depleted and then replenished with retinol in vivo. Results showed that RAR alpha messenger RNA and protein levels declined to VAD amounts after 7 weeks on a VAD diet. This decline was due to decreased RAR alpha levels in early meiotic spermatocytes and the loss of advanced germ cells. Interestingly, the advanced germ cells still contained RAR alpha, but the protein was primarily cytoplasmic instead of nuclear, indicating inactivity as a transcription factor. In VAD testis, RAR alpha levels were low and then increased primarily in Sertoli cells after retinol replenishment. TUNEL analyses showed that most germ cells at the basal aspect of seminiferous tubules were undergoing apoptosis during degeneration. These results indicate that RAR alpha is either down-regulated or inactivated in RA-deficient testis and coincident with that, testes degenerate by apoptosis or selective loss of germ cells.
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Affiliation(s)
- K M Akmal
- Department of Genetics and Cell Biology, Center for Reproductive Biology, Washington State University, Pullman 99164, USA
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Abstract
We have isolated human and rat clones of the LIM motif-containing protein kinase, termed LIMK-2. LIMK-2 is related to the neuronally expressed LIM-kinase, whose hemizygous deletion appears to result in cognitive impairment in patients with Williams syndrome. The hallmark of this protein family is the presence of 1 or 2-terminal LIM motifs and an atypical C-terminal protein kinase domain. LIMK-2 mRNA was detected by Northern blot analysis in human tissues, most abundantly in placenta, lung, liver, and pancreas, and also in a variety of cell lines including neuronal, glioblastoma, and mammary carcinoma lines. The LIMK-2 transcript was also induced upon neuroectodermal differentiation of mouse P19 embryonal carcinoma cells. A 65 kDa recombinant LIMK-2 protein was identified in 293 cells stably transfected with a LIMK-2 expression vector. An in vitro kinase assay demonstrates LIMK-2 is autophosphorylated and exhibits serine/threonine kinase activity towards the exogenous substrate MBP. The endogenous 65 kDa LIMK-2 protein was detected in a variety of cell lines, and coprecipitates with a 140 kDa tyrosine phosphorylated protein, but was not itself tyrosine phosphorylated. At the subcellular level, LIMK-2 is localized in both the nucleus and in a Triton X-100 soluble fraction.
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Affiliation(s)
- B Smolich
- SUGEN, Inc, Redwood City, CA 94063, USA.
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Abstract
Changes in vitamin D metabolism and their effect on calcium and bone metabolism in uremia have been extensively studied. However, the possible effect of uremia on intestinal absorption of vitamin D has not been investigated. We determined the rate of intestinal absorption of vitamin D3 in uremic and normal rats using a well-defined in vivo perfusion technique under identical experimental conditions. The rate of jejunal absorption of vitamin D3 in uremic animals (5.09 +/- 1.87 pmol/100 cm/h) was significantly less (p less than 0.001) than that found in the control animals (11.5 +/- 1.6 pmol/100 cm/h). While the underlying mechanism(s) of the observed reduction in vitamin D absorption in uremia is not known, its recognition adds another dimension to the previously recognized abnormalities of vitamin D metabolism in uremia.
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