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https://www.readbyqxmd.com/read/29754797/the-invisible-hands-conducting-minimally-invasive-mitral-valve-surgery
#1
EDITORIAL
Jason J Han, Pavan Atluri
No abstract text is available yet for this article.
April 19, 2018: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29663522/tricuspid-valve-endocarditis-in-the-era-of-the-opioid-epidemic
#2
Tyler J Wallen, Wilson Szeto, Matthew Williams, Pavan Atluri, George Arnaoutakis, Marci Fults, Ibrahim Sultan, Nimesh Desai, Michael Acker, Prashanth Vallabhajosyula
BACKGROUND AND AIM: We reviewed our institutional experience with tricuspid valve endocarditis to understand the impact of the opioid epidemic on the incidence of right heart endocarditis. METHODS: We retrospectively reviewed all cases of tricuspid endocarditis managed surgically from January of 2011 to May of 2017. There were no exclusion criteria. RESULTS: A total of 126 patients were identified. There were seven cases in 2011 and 36 in 2016...
April 16, 2018: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/29603626/pulmonary-hypertension-barrier-or-just-a-bump-in-the-road-in-transplanting-adults-with-congenital-heart-disease
#3
Jonathan N Menachem, Edo Y Birati, Payman Zamani, Anjali T Owens, Pavan Atluri, Christian A Bermudez, David Drajpuch, Stephanie Fuller, Yuli Y Kim, Christopher E Mascio, Vikram Palanivel, J Eduardo Rame, Joyce Wald, Michael A Acker, Jeremy A Mazurek
BACKGROUND: Heart failure (HF) is the leading cause of death in adults with congenital heart disease (ACHD). Identification of disease progression and timing of referral for advanced therapies is often delayed. However, increased awareness and understanding of ACHD and improvements in the approach to treatment have led to improved outcomes. Pulmonary hypertension (PH) is a common barrier to HT. In ACHD, the approach to PH and HT is quite complicated, given the anatomic heterogeneity and lower prevalence and experience...
March 30, 2018: Congenital Heart Disease
https://www.readbyqxmd.com/read/29602270/injectable-granular-hydrogels-with-multifunctional-properties-for-biomedical-applications
#4
Joshua E Mealy, Jennifer J Chung, Heon-Ho Jeong, David Issadore, Daeyeon Lee, Pavan Atluri, Jason A Burdick
Injectable hydrogels are useful for numerous biomedical applications, such as to introduce therapeutics into tissues or for 3D printing. To expand the complexity of available injectable hydrogels, shear-thinning and self-healing granular hydrogels are developed from microgels that interact via guest-host chemistry. The microgel properties (e.g., degradation, molecule release) are tailored through their crosslinking chemistry, including degradation in response to proteases. When microgels of varied formulations are mixed, complex release and degradation behaviors are observed, including after injection to permit cellular invasion...
March 30, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29576117/a-neurosteroid-analogue-with-t-type-calcium-channel-blocking-properties-is-an-effective-hypnotic-but-is-not-harmful-to-neonatal-rat-brain
#5
N Atluri, S M Joksimovic, A Oklopcic, D Milanovic, J Klawitter, P Eggan, K Krishnan, D F Covey, S M Todorovic, V Jevtovic-Todorovic
BACKGROUND: More than 4 million children are exposed annually to sedatives and general anaesthetics (GAs) in the USA alone. Recent data suggest that common GAs can be detrimental to brain development causing neurodegeneration and long-term cognitive impairments. Challenged by a recent US Food and Drug Administration (FDA) warning about potentially neurotoxic effects of GAs in children, there is an urgent need to develop safer GAs. METHODS: Postnatal Day 7 (P7) rat pups of both sexes were exposed to six (repeated every 2 h) injections of equipotent hypnotic doses of ketamine or the neuroactive steroid (3β,5β,17β)-3-hydroxyandrostane-17-carbonitrile (3β-OH) for 12 h...
April 2018: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29566124/sustained-release-of-endothelial-progenitor-cell-derived-extracellular-vesicles-from-shear-thinning-hydrogels-improves-angiogenesis-and-promotes-function-after-myocardial-infarction
#6
Carol W Chen, Leo L Wang, Samir Zaman, Jon Gordon, Maria F Arisi, Chantel M Venkataraman, Jennifer J Chung, George Hung, Ann C Gaffey, Lynn A Spruce, Hossein Fazelinia, Robert C Gorman, Steven H Seeholzer, Jason A Burdick, Pavan Atluri
Aims: Previous studies have demonstrated improved cardiac function following myocardial infarction (MI) after administration of endothelial progenitor cells (EPCs) into ischemic myocardium. A growing body of literature supports paracrine effectors, including extracellular vesicles (EVs), as the main mediators of the therapeutic benefits of EPCs. The use of paracrine factors is an attractive strategy that harnesses the effects of cell therapy without concerns of cell engraftment or viability...
March 16, 2018: Cardiovascular Research
https://www.readbyqxmd.com/read/29514805/predicting-long-term-outcome-in-patients-treated-with-continuous-flow-left-ventricular-assist-device-the-penn-columbia-risk-score
#7
Edo Y Birati, Thomas C Hanff, Dawn Maldonado, E Wilson Grandin, Peter J Kennel, Jeremy A Mazurek, Esther Vorovich, Matthew Seigerman, Jessica L L Howard, Michael A Acker, Yoshifumi Naka, Joyce Wald, Lee R Goldberg, Mariell Jessup, Pavan Atluri, Kenneth B Margulies, P Christian Schulze, J Eduardo Rame
BACKGROUND: Predicting which patients are unlikely to benefit from continuous flow left ventricular assist device (LVAD) treatment is crucial for the identification of appropriate patients. Previously developed scoring systems are limited to past eras of device or restricted to specific devices. Our objective was to create a risk model for patients treated with continuous flow LVAD based on the preimplant variables. METHODS AND RESULTS: We performed a retrospective analysis of all patients implanted with a continuous flow LVAD between 2006 and 2014 at the University of Pennsylvania and included a total of 210 patients (male 78%; mean age, 56±15; mean follow-up, 465±486 days)...
March 7, 2018: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29510938/think-beyond-the-cell-can-we-tissue-engineer-a-solution-to-heart-failure
#8
EDITORIAL
Jason J Han, Pavan Atluri
No abstract text is available yet for this article.
February 13, 2018: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29433532/is-there-a-difference-in-bleeding-after-left-ventricular-assist-device-implant-centrifugal-versus-axial
#9
Ann C Gaffey, Carol W Chen, Jennifer J Chung, Jason Han, Christian A Bermudez, Joyce Wald, Pavan Atluri
BACKGROUND: Continuous-flow left ventricular assist devices (CF-LVAD) have become the standard of care for patients with end stage heart failure. Device reliability has increased, bringing the potential for VAD, compared to transplant, into debate. However, complications continue to limit VADs as first line therapy. Bleeding is a major morbidity. A debate exists as to the difference in bleeding profile between the major centrifugal and axial flow devices. We hypothesized that there would be similar adverse bleeding event profiles between the 2 major CF-LVADs...
February 13, 2018: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/29371638/characterization-of-nanodiamond-based-anti-hiv-drug-delivery-to-the-brain
#10
Upal Roy, Vadym Drozd, Andriy Durygin, Jesse Rodriguez, Paul Barber, Venkata Atluri, Xiaohua Liu, Thomas G Voss, Surendra Saxena, Madhavan Nair
Human Immunodeficiency Virus Type 1 (HIV-1) remains one of the leading causes of death worldwide. Present combination antiretroviral therapy has substantially improved HIV-1 related pathology. However, delivery of therapeutic agents to the HIV reservoir organ like Central nervous system (CNS) remains a major challenge primarily due to the ineffective transmigration of drugs through Blood Brain Barrier (BBB). The recent advent of nanomedicine-based drug delivery has stimulated the development of innovative systems for drug delivery...
January 25, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29336212/simulated-microgravity-impairs-cardiac-autonomic-neurogenesis-from-neural-crest-cells
#11
Konstantinos E Hatzistergos, Zhijie Jiang, Krystalenia Valasaki, Lauro M Takeuchi, Wayne Balkan, Preethi Atluri, Dieter Saur, Barbara Seidler, Nicholas Tsinoremas, Darcy L DiFede, Joshua M Hare
Microgravity-induced alterations in the autonomic nervous system (ANS) contribute to derangements in both the mechanical and electrophysiological function of the cardiovascular system, leading to severe symptoms in humans following space travel. Because the ANS forms embryonically from neural crest (NC) progenitors, we hypothesized that microgravity can impair NC-derived cardiac structures. Accordingly, we conducted in vitro simulated microgravity experiments employing NC genetic lineage tracing in mice with cKitCreERT2/+ , Isl1nLacZ, and Wnt1-Cre reporter alleles...
March 20, 2018: Stem Cells and Development
https://www.readbyqxmd.com/read/29331174/transcatheter-tricuspid-repair-the-knifeless-cutting-edge
#12
EDITORIAL
Jason J Han, Pavan Atluri
No abstract text is available yet for this article.
March 2018: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29310929/ventricular-assist-device-support-after-biventricular-excision-assistance-or-alternative
#13
EDITORIAL
Jason J Han, Pavan Atluri
No abstract text is available yet for this article.
April 2018: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29250593/methods-to-assess-shear-thinning-hydrogels-for-application-as-injectable-biomaterials
#14
Minna H Chen, Leo L Wang, Jennifer J Chung, Young-Hun Kim, Pavan Atluri, Jason A Burdick
Injectable hydrogels have gained popularity as a vehicle for the delivery of cells, growth factors, and other molecules to localize and improve their retention at the injection site, as well as for the mechanical bulking of tissues. However, there are many factors, such as viscosity, storage and loss moduli, and injection force, to consider when evaluating hydrogels for such applications. There are now numerous tools that can be used to quantitatively assess these factors, including for shear-thinning hydrogels because their properties change under mechanical load...
December 11, 2017: ACS Biomaterials Science & Engineering
https://www.readbyqxmd.com/read/29223843/robotic-surgery-maximizing-the-potential-of-a-minimally-invasive-platform
#15
EDITORIAL
Jason J Han, Pavan Atluri
No abstract text is available yet for this article.
March 2018: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29198798/dual-antiplatelet-therapy-at-discharge-antiplatelet-practice-patterns-after-coronary-artery-bypass-grafting-surgical-anecdote-is-driving-standard-of-care
#16
EDITORIAL
Mark Helmers, Pavan Atluri
No abstract text is available yet for this article.
February 2018: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29132227/oxidative-stress-in-hiv-infection-and-alcohol-use-role-of-redox-signals-in-modulation-of-lipid-rafts-and-atp-binding-cassette-transporters
#17
Samikkannu Thangavel, Carmen T Mulet, Venkata S R Atluri, Marisela Agudelo, Rhonda Rosenberg, Jessy G Devieux, Madhavan P N Nair
AIMS: Human immunodeficiency virus (HIV) infection induces oxidative stress and alcohol use accelerates disease progression, subsequently causing immune dysfunction. However, HIV and alcohol impact on lipid rafts-mediated immune dysfunction remains unknown. In this study, we investigate the modulation by which oxidative stress induces reactive oxygen species (ROS) affecting redox expression, lipid rafts caveiloin-1, ATP-binding cassette (ABC) transporters, and transcriptional sterol regulatory element-binding protein (SREBP) gene and protein modification and how these mechanisms are associated with arachidonic acid (AA) metabolites in HIV positive alcohol users, and how they escalate immune dysfunction...
February 1, 2018: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/29021348/early-right-ventricular-assist-device-use-in-patients-undergoing-continuous-flow-left-ventricular-assist-device-implantation-incidence-and-risk-factors-from-the-interagency-registry-for-mechanically-assisted-circulatory-support
#18
Michael S Kiernan, E Wilson Grandin, Marshall Brinkley, Navin K Kapur, Duc Thinh Pham, Robin Ruthazer, J Eduardo Rame, Pavan Atluri, Edo Y Birati, Guilherme H Oliveira, Francis D Pagani, James K Kirklin, David Naftel, Robert L Kormos, Jeffrey J Teuteberg, David DeNofrio
BACKGROUND: To investigate preimplant risk factors associated with early right ventricular assist device (RVAD) use in patients undergoing continuous-flow left ventricular assist device (LVAD) surgery. METHODS AND RESULTS: Patients in the Interagency Registry for Mechanically Assisted Circulatory Support who underwent primary continuous-flow-LVAD surgery were examined for concurrent or subsequent RVAD implantation within 14 days of LVAD. Risk factors for RVAD implantation and the combined end point of RVAD or death within 14 days of LVAD were assessed with stepwise logistic regression...
October 2017: Circulation. Heart Failure
https://www.readbyqxmd.com/read/28953278/discussion-about-the-use-of-the-volume-specific-surface-area-vssa-as-a-criterion-to-identify-nanomaterials-according-to-the-eu-definition-part-two-experimental-approach
#19
André J Lecloux, Rambabu Atluri, Yury V Kolen'ko, Francis Leonard Deepak
The first part of this study was dedicated to the modelling of the influence of particle shape, porosity and particle size distribution on the volume specific surface area (VSSA) values in order to check the applicability of this concept to the identification of nanomaterials according to the European Commission Recommendation. In this second part, experimental VSSA values are obtained for various samples from nitrogen adsorption isotherms and these values were used as a screening tool to identify and classify nanomaterials...
October 12, 2017: Nanoscale
https://www.readbyqxmd.com/read/28947307/prognostic-implications-of-changes-in-albumin-following-left-ventricular-assist-device-implantation-in-patients-with-severe-heart-failure
#20
Dipika J Gopal, Thomas C Hanff, Jeremy A Mazurek, Wilson E Grandin, Jessica Howard, Rhondalyn Forde-McLean, Joyce Wald, Kathie King, Michael A Acker, Lee R Goldberg, Mariell Jessup, Pavan Atluri, Kenneth B Margulies, Eduardo J Rame, Edo Y Birati
Mechanical assist devices have emerged as an established therapeutic option for patients with end-stage heart failure. Because preimplant hypoalbuminemia is a known risk factor for adverse outcomes, we hypothesized that change in albumin may be a prognostic indicator in patients with continuous-flow left ventricular assist devices (cfLVADs). This is a retrospective single-center study of patients who underwent cfLVAD implantation (HeartMate II and HeartWare HVAD) at an academic center from 2008 to 2014. After excluding those who died, were transplanted, or hospitalized during the first 3 months post-implant, albumin values were obtained and stratified by an increase or a decrease from pre-implant to 3 months post-implant on 171 (81% male, mean age 57 ± 16 years) patients (139 for the survival analysis and 90 for the hospitalization analysis)...
December 1, 2017: American Journal of Cardiology
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