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883 citation(s) found for "Dallas, S L".

The Society for Vascular Medicine: The first quarter century
Hiatt, William R. , Hirsch, Alan T., Olin, Jeffrey W. , Cooke, John P. , Rooke, Thom W. , Beckman, Joshua A. , Froehlich, James B. , Rooke, Thom, Creager, Mark A. , Jaff, Michael R. , Cooke, John P , Beckman, Joshua A

Vascular Medicine | February 26, 2015 | Volume: 20 | Issue: 1 | Pages: 60-68

10.1177/1358863x14566042 | PMID 25722420 Get It

The Society for Vascular Medicine was founded in 1989. During the subsequent 25 years, the Society has grown to approximately 500 members and has achieved international recognition while making important contributions to vascular disease education, clinical vascular medicine and biology research, and patient care. In celebration of the Society’s 25th anniversary, its past and current presidents reflect on the Society’s history, challenges, and achievements, and emphasize the vital role of the SVM in the discipline of vascular medicine.
Cardiopulmonary bypass and intra‐aortic balloon pump use is associated with higher short and long term mortality after transcatheter aortic valve replacement: A PARTNER trial substudy
Shreenivas, Satya , Lilly, Scott , Szeto, Wilson Y. , Anwaruddin, Saif , Bavaria, Joseph E. , Hudock, Kristin , Thourani, Vinod H. , Makkar, Raj , Pichard, Augusto D., Webb, John G. , Dewey, Todd, Suri, Rakesh M. , Xu, Ke , Leon, Martin B. , Desai, Nimesh D. , Kapadia, Samir , Herrmann, Howard C.

Catheterization and Cardiovascular Interventions | December 24, 2014 | Volume: 86 | Issue: 2 | Pages: 316-322

10.1002/ccd.25776 | PMID 25546704 Get It

BackgroundTranscatheter aortic valve replacement (TAVR) with the balloon‐expandable Sapien transcatheter heart valve improves survival compared to standard therapy in patients with severe aortic stenosis (AS) and is noninferior to surgical aortic valve replacement (AVR) in patients at high operative risk. Nonetheless, a significant proportion of patients may require pre‐emptive or emergent support with cardiopulmonary bypass (CPB) and/or intra‐aortic balloon pump (IABP) during TAVR due to pre‐existing comorbid conditions or as a result of procedural complications. Objectives: We hypothesized that patients who required CPB or IABP would have increased periprocedural complications and reduced long‐term survival. In addition, we sought to determine whether preprocedural variables could predict the need for CPB and IABP. Methods: The study population included 2,525 patients in the PARTNER Trial (Cohort A and B) and the continuing access registry (CAR). Patients that received CPB or IABP were compared to patients that did not receive either, and then further divided into those that received support pre‐TAVR and those that were placed on support emergently. Results: One‐hundred sixty‐three patients (6.5%) were placed on CPB and/or IABP. The use of CPB or IABP was associated with higher 1 year mortality (49.1% vs. 21.6%, P < 0.001). In multivariable analysis, utilization of CPB or IABP was an independent predictor of 30 day (HR 6.95) and 1‐year (HR 2.56) mortality. Although mortality was highest in emergent cases, mortality was also greater in planned CPB and IABP cases compared with non‐CPB/IABP cases (53.3% and 40.3% vs. 21.6%, P < 0.001). Conclusions: These findings indicate that CPB and IABP use in TAVR portends a poor prognosis and its utilization, particularly in the setting of pre‐emptive use, needs reconsideration. © 2015 Wiley Periodicals, Inc.
COMMD1 is linked to the WASH complex and regulates endosomal trafficking of the copper transporter ATP7A
Phillips-Krawczak, Christine, Singla, Amika , Starokadomskyy, Petro , Deng, Zhi-Hui , Osborne, Douglas G. , Li, Haiying , Dick, Christopher J., Gomez, Timothy S., Koenecke, Megan M, Zhang, Jin‐San , Dai, Haiming , Sifuentes-Dominguez, Luis , Geng, Linda N. , Hein, Marco Y. , Wallis, Mathew , McGaughran, Julie , Gécz, Jozef , Sluis, Bart van de , Billadeau, Daniel D. , Burstein, Ezra , Kaufmann, Scott H. , van de Sluis, Bart , Burstein, Ezra , McGaughran, Julie , Wallis, Mathew , Dai, Haiming , Geng, Linda N.

Molecular Biology of the Cell | October 30, 2014 | Volume: 26 | Issue: 1 | Pages: 91-103

10.1091/mbc.e14-06-1073 | PMID 25355947 Get It

COMMD1 deficiency results in defective copper homeostasis, but the mechanism for this has remained elusive. Here we report that COMMD1 is directly linked to early endosomes through its interaction with a protein complex containing CCDC22, CCDC93, and C16orf62. This COMMD/CCDC22/CCDC93 (CCC) complex interacts with the multisubunit WASH complex, an evolutionarily conserved system, which is required for endosomal deposition of F-actin and cargo trafficking in conjunction with the retromer. Interactions between the WASH complex subunit FAM21, and the carboxyl-terminal ends of CCDC22 and CCDC93 are responsible for CCC complex recruitment to endosomes. We show that depletion of CCC complex components leads to lack of copper-dependent movement of the copper transporter ATP7A from endosomes, resulting in intracellular copper accumulation and modest alterations in copper homeostasis in humans with CCDC22 mutations. This work provides a mechanistic explanation for the role of COMMD1 in copper homeostasis and uncovers additional genes involved in the regulation of copper transporter recycling.
Editorial: neutrophil dysfunction in patients with cirrhosis
Asrani, Sumeet K. , Kamath, Patrick S. , Asrani, Sumeet K

Alimentary Pharmacology & Therapeutics | September 17, 2014 | Volume: 40 | Issue: 8 | Pages: 986-986

10.1111/apt.12915 | PMID 25229815 Get It

Targeting TRP Channels For Novel Migraine Therapeutics
Yan, Jin , Xie, Jennifer Y. , Ossipov, Michael H. , Dussor, Gregory O. , Dodick, David W. , Porreca, Frank

ACS Chemical Neuroscience | August 20, 2014 | Volume: 5 | Issue: 11 | Pages: 1085-1096

10.1021/cn500083e | PMID 25138211 Get It

Abstract Migraine is increasingly understood to be a disorder of the brain. In susceptible individuals, a variety of ?triggers? may influence altered central excitability, resulting in the activation and sensitization of trigeminal nociceptive afferents surrounding blood vessels (i.e., the trigeminovascular system), leading to migraine pain. Transient receptor potential (TRP) channels are expressed in a subset of dural afferents, including those containing calcitonin gene related peptide (CGRP). Activation of TRP channels promotes excitation of nociceptive afferent fibers and potentially lead to pain. In addition to pain, allodynia to mechanical and cold stimuli can result from sensitization of both peripheral afferents and of central pain pathways. TRP channels respond to a variety of endogenous conditions including chemical mediators and low pH. These channels can be activated by exogenous stimuli including a wide range of chemical and environmental irritants, some of which have been demonstrated to trigger migraine in humans. Activation of TRP channels can elicit CGRP release, and blocking the effects of CGRP through receptor antagonism or antibody strategies has been demonstrated to be effective in the treatment of migraine. Identification of approaches that can prevent activation of TRP channels provides an additional novel strategy for discovery of migraine therapeutics.
Abstract 1208: Discovery of a previously undescribed cutaneous T-cell neoplasm with chromosomal rearrangements of 6p25.3.
Karai, Laszlo J., Knudson, Ryan A., Feldman, Andrew L. , Kadin, Marshall E. , Hsi, Eric D. , Sluzevich, Jason C. , Ketterling, Rhett P.

Cancer Research | August 14, 2014 | Volume: 73 | Issue: 8_Supplement | Pages: 1208-1208

10.1158/1538-7445.am2013-1208 Get It

Abstract Background: Cutaneous T-cell neoplasms display markedly heterogeneous clinical behavior despite often similar pathologic features. For example, transformed mycosis fungoides (tMF) has a poor prognosis and requires intensive therapy whereas lymphomatoid papulosis (LyP) is an indolent lymphoproliferative disorder with spontaneously resolving lesions. These entities have overlapping histologic features and no molecular tools currently exist to aid in subclassification. Methods: We identified 11 T-cell neoplasms with histologic appearances distinct from previously described cutaneous T-cell neoplasms but with features overlapping those of both tMF and LyP. The phenotypic and genetic characteristics of the tumors were studied using immunohistochemistry and fluorescence in situ hybridization, respectively. Clinical data on presentation, treatment, evolution of the lesions, and follow-up were obtained. Results: All patients were older adults (mean age, 75 yr; range, 67-88 yr; 9M:2F). Clinical presentations were similar, with papulonodular skin lesions (0.3-1.0 cm) restricted to a single body area in all but two patients. Histologically there was an extensive atypical lymphoid infiltrate in the epidermis and a dermal tumor containing large transformed cells with numerous mitotic figures and apoptotic bodies. All tumors had a T-cell phenotype and expressed CD30 in both dermal and epidermal components. No case expressed ALK. Most cases had a high proliferative rate (&gt;80%) by Ki67 staining. FISH analysis demonstrated rearrangements of the DUSP22-IRF4 locus on 6p25.3 in all cases. No patient had evidence of systemic disease on imaging studies. In 4 untreated patients, papules began to regress spontaneously a few weeks after presentation, with complete resolution within a month or two. Seven patients were treated with local excision (with or without cryotherapy) or radiotherapy. All non-excised lesions ultimately regressed. All patients were alive at last follow-up (median, 21 mo; range, 7-150 mo). Cutaneous recurrences occurred in 5 patients. At last follow-up only 1 patient had active lesions, which were confined to the presenting site. The remaining 10 patients had been disease-free from 2 to 32 months. Conclusions: Despite pathologic features mimicking an aggressive lymphoma, the benign clinical course observed in all 11 patients suggests these cases represent a newly recognized subtype of LyP. These neoplasms are characterized by 6p25.3 rearrangements, representing the first recurrent genetic abnormality identified in LyP. In contrast, we previously have shown absence of these rearrangements in tMF. Distinction of LyP from tMF is critical in this older patient population unlikely to tolerate intensive therapy. Thus, detection of 6p25.3 rearrangements represents a new tool for molecular classification of cutaneous T-cell neoplasms. Citation Format: Andrew L. Feldman, Laszlo J. Karai, Marshall E. Kadin, Eric D. Hsi, Jason C. Sluzevich, Rhett P. Ketterling, Ryan A. Knudson. Discovery of a previously undescribed cutaneous T-cell neoplasm with chromosomal rearrangements of 6p25.3. [abstract]. In: Proceedings of the 104th Annual Meeting of the American Association for Cancer Research; 2013 Apr 6-10; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2013;73(8 Suppl):Abstract nr 1208. doi:10.1158/1538-7445.AM2013-1208
Abstract P3-13-03: A phase III, open-label, randomized study of eribulin versus capecitabine in patients (pts) with metastatic breast cancer (MBC): Effect of post-progression anti-cancer treatments (PPT) and metastatic progression events on overall surviva
Kaufman, PA, Yelle, Louise, Wanders, J., O’Shaughnessy, Joyce , Olivo, MS, He, Yi , Dutcus, CE, Binder, T., Twelves, Chris, Perez, EA, Awada, Ahmad , Cortés, Javier , Garzon, Francisco , Perez, EA

Cancer Research | August 14, 2014 | Volume: 73 | Issue: 24_Supplement | Pages: P3-13-03-P3-13-03

10.1158/0008-5472.sabcs13-p3-13-03 Get It

Abstract Background A Phase III trial (Study 301; NCT00337103) in MBC comparing eribulin (E) with capecitabine (C) showed a trend for improved overall survival (OS) (hazard ratio [HR] 0.88; 95% CI 0.77, 1.00; P = 0.056) but not progression-free survival (PFS) (HR 1.08; 95% CI 0.93, 1.25; P = 0.30) with E. In order to investigate this apparent discordance, post-hoc analyses assessed the effect of PPT and events defining disease progression on OS. Methods Pts with locally advanced or MBC who had received an anthracycline and a taxane (≤2 prior chemotherapy regimens for advanced disease), were randomized to E (554) or C (548). Co-primary endpoints were OS and PFS. The impact of PPT on OS was assessed by analysis of exploratory PPT subgroups. Analyses of OS sensitivity censoring at time of PPT, and OS adjusted by PPT as a time-dependent covariate in a Cox regression model, were performed. The relationship between OS and progression events (appearance of a “new” lesion or metastasis [NM]; increase in size of pre-existing lesions [IPEL]; or other [death, clinical progression, or censored]) was investigated using Cox regression. Results PPT was received by 70% and 62% of E and C pts, respectively. For E pts, there were no significant OS differences by PPT (Table 1). Excluding 56 pts (22 E, 34 C) who received anti-HER2 therapy as PPT from the intent-to-treat OS analysis, OS was longer with E (HR 0.86; 95% CI 0.76, 0.99; nominal P = 0.03). OS sensitivity analysis censoring at time of PPT was consistent with the overall study results (HR 0.82; 95% CI 0.65, 1.03). Assessment of the overall effect of PPT, adjusting by PPT as a time-dependent covariate in a Cox regression model, showed that OS was longer with E (HR 0.85; 95% CI 0.75, 0.97; nominal P = 0.02). Progression due to NM or IPEL occurred in 271 and 147 of E pts, and 285 and 129 of C pts, respectively. Median OS was similar between arms in pts with IPEL and longer with E vs C in pts with NM (Table 2). Pts who progressed due to NM were at higher risk of death (HR 2.12; 95% CI 1.84, 2.43; nominal P&lt;0.01). Conclusions Treatment with C or any other PPT after progression on E did not account for the trend in OS benefit with E observed in the primary analysis. Pts who progressed with NM had a worse prognosis than those with IPEL. The appearance of NM was highly correlated with OS, and the apparent discordance between PFS and OS seems to be related to these different progression events. Tab 1: OS by PPT after EPPTAll ptsC as 1stOther than C as 1stC at any timeOther than C at any timeNoneN554221169275115164Median OS, months (95% CI)15.9 (15.2, 17.6)18.3 (15.8, 20.9)19.9 (17.6, 24.0)19.6 (17.6, 21.5)18.0 (15.4, 22.7)7.4 (6.2, 9.1) Tab 2: OS by progression event Progression event NMIPELOther ECECECN271285147129136134Median OS, months (95% CI)15.5 (14.2, 17.5)12.9 (11.3, 14.5)17.4 (14.4, 19.7)17.4 (15.3, 20.9)16.7 (14.8, 24.2)15.5 (11.7, 18.3)HR (95% CI)0.81 (0.68, 0.97)1.13 (0.87, 1.46)0.78 (0.59, 1.03)Nominal P -value0.020.350.08Time to NM or death, months (95% CI)5.8 (5.2, 6.5)5.2 (4.3, 5.9)NANAHR (95% CI)0.90 (0.77, 1.05)NANANominal P-value0.17NANA Citation Information: Cancer Res 2013;73(24 Suppl): Abstract nr P3-13-03.
DNA Copy Number Variations in Patients with 46,XY Disorders of Sex Development
Granberg, Candace F. , Keays, Mélise , Hill, Martinez, Grimsby, Gwen M. , Harrison, Steven M. , Baker, Linda A.

Journal of Urology | June 16, 2014 | Volume: 192 | Issue: 6 | Pages: 1801-1806

10.1016/j.juro.2014.06.040 | PMID 24946221 Get It