keyword
MENU ▼
Read by QxMD icon Read
search

Ian zachary

keyword
https://www.readbyqxmd.com/read/29311499/transcatheter-aortic-valve-implantation-tavi-for-native-aortic-valve-regurgitation%C3%A3-a-systematic-review
#1
Altayyeb Yousef, Zachary MacDonald, Trevor Simard, Juan J Russo, Joshua Feder, Michael V Froeschl, Alexander Dick, Christopher Glover, Ian G Burwash, Azeem Latib, Josep Rodés-Cabau, Marino Labinaz, Benjamin Hibbert
BACKGROUND: Transcatheter aortic valve implantation (TAVI) has become the standard of care for management of high-risk patients with aortic stenosis. Limited data is available regarding the performance of TAVI in patients with native aortic valve regurgitation (NAVR).Methods and Results:We performed a systematic review from 2002 to 2016. The primary outcome was device success as per VARC-2 criteria. Secondary endpoints included procedural complications, and 30-day and 1-year mortality rates...
December 28, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/29233870/the-mammalian-ulk1-complex-and-autophagy-initiation
#2
REVIEW
Maria Zachari, Ian G Ganley
Autophagy is a vital lysosomal degradation pathway that serves as a quality control mechanism. It rids the cell of damaged, toxic or excess cellular components, which if left to persist could be detrimental to the cell. It also serves as a recycling pathway to maintain protein synthesis under starvation conditions. A key initial event in autophagy is formation of the autophagosome, a unique double-membrane organelle that engulfs the cytosolic cargo destined for degradation. This step is mediated by the serine/threonine protein kinase ULK1 (unc-51-like kinase 1), which functions in a complex with at least three protein partners: FIP200 (focal adhesion kinase family interacting protein of 200 kDa), ATG (autophagy-related protein) 13 (ATG13), and ATG101...
December 12, 2017: Essays in Biochemistry
https://www.readbyqxmd.com/read/29205287/is-less-more-comparing-chemotherapy-alone-with-chemotherapy-and-radiation-for-high-risk-grade-2-glioma-an-analysis-of-the-national-cancer-data-base
#3
Jaymin Jhaveri, Yuan Liu, Mudit Chowdhary, Zachary S Buchwald, Theresa W Gillespie, Jeffrey J Olson, Alfredo D Voloschin, Bree R Eaton, Hui-Kuo G Shu, Ian R Crocker, Walter J Curran, Kirtesh R Patel
BACKGROUND: The addition of chemotherapy to adjuvant radiotherapy (chemotherapy and radiation therapy [CRT]) improves overall survival (OS) for patients with high-risk grade 2 gliomas; however, the impact of chemotherapy alone (CA) is unknown. This study compares the OS of patients with high-risk grade 2 gliomas treated with CA versus CRT. METHODS: Patients with high-risk grade 2 gliomas (subtotal resection or age ≥ 40 years) with oligodendrogliomas, astrocytomas, or mixed tumors were identified with the National Cancer Data Base...
December 4, 2017: Cancer
https://www.readbyqxmd.com/read/29181788/mortality-associated-with-metformin-versus-sulfonylurea-initiation-a-cohort-study-of-veterans-with-diabetes-and-chronic-kidney-disease
#4
Zachary A Marcum, Christopher W Forsberg, Kathryn P Moore, Ian H de Boer, Nicholas L Smith, Edward J Boyko, James S Floyd
BACKGROUND: For patients with type 2 diabetes and chronic kidney disease (CKD), high-quality evidence about the relative benefits and harms of oral glucose-lowering drugs is limited. OBJECTIVE: To evaluate whether mortality risk differs after the initiation of monotherapy with either metformin or a sulfonylurea in Veterans with type 2 diabetes and CKD. DESIGN: Observational, national cohort study in the Veterans Health Administration (VHA)...
November 27, 2017: Journal of General Internal Medicine
https://www.readbyqxmd.com/read/29166592/hiv-envelope-glycoform-heterogeneity-and-localized-diversity-govern-the-initiation-and-maturation-of-a-v2-apex-broadly-neutralizing-antibody-lineage
#5
Elise Landais, Ben Murrell, Bryan Briney, Sasha Murrell, Kimmo Rantalainen, Zachary T Berndsen, Alejandra Ramos, Lalinda Wickramasinghe, Melissa Laird Smith, Kemal Eren, Natalia de Val, Mengyu Wu, Audrey Cappelletti, Jeffrey Umotoy, Yolanda Lie, Terri Wrin, Paul Algate, Po-Ying Chan-Hui, Etienne Karita, Andrew B Ward, Ian A Wilson, Dennis R Burton, Davey Smith, Sergei L Kosakovsky Pond, Pascal Poignard
Understanding how broadly neutralizing antibodies (bnAbs) to HIV envelope (Env) develop during natural infection can help guide the rational design of an HIV vaccine. Here, we described a bnAb lineage targeting the Env V2 apex and the Ab-Env co-evolution that led to development of neutralization breadth. The lineage Abs bore an anionic heavy chain complementarity-determining region 3 (CDRH3) of 25 amino acids, among the shortest known for this class of Abs, and achieved breadth with only 10% nucleotide somatic hypermutation and no insertions or deletions...
November 21, 2017: Immunity
https://www.readbyqxmd.com/read/29141949/microvascular-insulin-resistance-in-skeletal-muscle-and-brain-occurs-early-in-the-development-of-juvenile-obesity-in-pigs
#6
T Dylan Olver, Zachary Ian Grunewald, Thomas J Jurrissen, Rebecca Ek MacPherson, Paul J LeBlanc, Teagan R Schnurbusch, Alana M Czajkowski, Maurice Harold Laughlin, R Scott Rector, Shawn B Bender, Eric M Walters, Craig A Emter, Jaume Padilla
BACKGROUND: Impaired microvascular insulin signaling may develop prior to overt indices of microvascular endothelial dysfunction and represent an early pathological feature of adolescent obesity. Using a translational porcine model of juvenile obesity, we tested the hypotheses that in the early stages of obesity development, impaired insulin signaling manifests in skeletal muscle (triceps), brain (prefrontal cortex) and corresponding vasculatures, and that depressed insulin-induced vasodilation is reversible with acute inhibition of protein kinase C beta (PKCβ)...
November 15, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/29124649/angiotensin-receptor-blockade-a-novel-approach-for-symptomatic-radiation-necrosis-after-stereotactic-radiosurgery
#7
Mudit Chowdhary, Derick Okwan-Duodu, Jeffrey M Switchenko, Robert H Press, Jaymin Jhaveri, Zachary S Buchwald, Jim Zhong, Bhavana V Chapman, Ranjit S Bindra, Joseph N Contessa, Henry S Park, James B Yu, Roy H Decker, Jeffrey J Olson, Nelson M Oyesiku, Ross A Abrams, Hui-Kuo G Shu, Walter J Curran, Ian R Crocker, Kirtesh R Patel
Preclinical evidence suggests angiotensin blockade therapy (ABT) decreases late radiation toxicities. This study aims to investigate the association between ABT and symptomatic radiation necrosis (SRN) following stereotactic radiosurgery (SRS). Resected brain metastases (rBM) and arteriovenous malformation (AVM) patients treated with SRS from 2002 to 2015 were identified. Patients in the ABT cohort were on therapy during SRS and at 1-month follow up. Kaplan Meier method and cumulative incidence model were used to analyze overall survival (OS) and intracranial outcomes...
November 9, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29058105/disentangling-the-relations-between-social-identity-and-prosocial-and-antisocial-behavior-in-competitive-youth-sport
#8
Mark W Bruner, Ian D Boardley, Alex J Benson, Kathleen S Wilson, Zachary Root, Jennifer Turnnidge, Jordan Sutcliffe, Jean Côté
The social identities formed through membership on extracurricular activity groups may contribute to the frequency with which youth engage in prosocial and antisocial behavior. However, researchers have yet to disentangle the individual- and group-level processes social identification effects operate through; sex and perceived norms may also moderate such effects. Thus, we investigated the hierarchical and conditional relations between three dimensions of social identity (i.e., ingroup ties, cognitive centrality, ingroup affect) and prosocial and antisocial behavior in youth ice hockey players (N = 376; 33% female)...
October 23, 2017: Journal of Youth and Adolescence
https://www.readbyqxmd.com/read/29049607/dose-response-association-of-cd8-tumor-infiltrating-lymphocytes-and-survival-time-in-high-grade-serous-ovarian-cancer
#9
Ellen L Goode, Matthew S Block, Kimberly R Kalli, Robert A Vierkant, Wenqian Chen, Zachary C Fogarty, Aleksandra Gentry-Maharaj, Aleksandra Toloczko, Alexander Hein, Aliecia L Bouligny, Allan Jensen, Ana Osorio, Andreas D Hartkopf, Andy Ryan, Anita Chudecka-Glaz, Anthony M Magliocco, Arndt Hartmann, Audrey Y Jung, Bo Gao, Brenda Y Hernandez, Brooke L Fridley, Bryan M McCauley, Catherine J Kennedy, Chen Wang, Chloe Karpinskyj, Christiani B de Sousa, Daniel G Tiezzi, David L Wachter, Esther Herpel, Florin Andrei Taran, Francesmary Modugno, Gregg Nelson, Jan Lubinski, Janusz Menkiszak, Jennifer Alsop, Jenny Lester, Jesús García-Donas, Jill Nation, Jillian Hung, José Palacios, Joseph H Rothstein, Joseph L Kelley, Jurandyr M de Andrade, Luis Robles-Díaz, Maria P Intermaggio, Martin Widschwendter, Matthias W Beckmann, Matthias Ruebner, Mercedes Jimenez-Linan, Naveena Singh, Oleg Oszurek, Paul R Harnett, Peter F Rambau, Peter Sinn, Philipp Wagner, Prafull Ghatage, Raghwa Sharma, Robert P Edwards, Roberta B Ness, Sandra Orsulic, Sara Y Brucker, Sharon E Johnatty, Teri A Longacre, Ursula Eilber, Valerie McGuire, Weiva Sieh, Yanina Natanzon, Zheng Li, Alice S Whittemore, Anna deFazio, Annette Staebler, Beth Y Karlan, Blake Gilks, David D Bowtell, Estrid Høgdall, Francisco J Candido Dos Reis, Helen Steed, Ian G Campbell, Jacek Gronwald, Javier Benítez, Jennifer M Koziak, Jenny Chang-Claude, Kirsten B Moysich, Linda E Kelemen, Linda S Cook, Marc T Goodman, María José García, Peter A Fasching, Stefan Kommoss, Suha Deen, Susanne K Kjaer, Usha Menon, James D Brenton, Paul D P Pharoah, Georgia Chenevix-Trench, David G Huntsman, Stacey J Winham, Martin Köbel, Susan J Ramus
Importance: Cytotoxic CD8+ tumor-infiltrating lymphocytes (TILs) participate in immune control of epithelial ovarian cancer; however, little is known about prognostic patterns of CD8+ TILs by histotype and in relation to other clinical factors. Objective: To define the prognostic role of CD8+ TILs in epithelial ovarian cancer. Design, Setting, and Participants: This was a multicenter observational, prospective survival cohort study of the Ovarian Tumor Tissue Analysis Consortium...
October 12, 2017: JAMA Oncology
https://www.readbyqxmd.com/read/29029168/effects-of-foliar-insecticides-on-leaf-level-spectral-reflectance-of-soybean
#10
Tavvs M Alves, Zachary P Marston, Ian V MacRae, Robert L Koch
Pest-induced changes in plant reflectance are crucial for the development of pest management programs using remote sensing. However, it is unknown if plant reflectance data is also affected by foliar insecticides applied for pest management. Our study assessed the effects of foliar insecticides on leaf reflectance of soybean. A 2-yr field trial and a greenhouse trial were conducted using randomized complete block and completely randomized designs, respectively. Treatments consisted of an untreated check, a new systemic insecticide (sulfoxaflor), and two representatives of the most common insecticide classes used for soybean pest management in the north-central United States (i...
September 27, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28887499/transcription-factors-nrf2-and-hsf1-have-opposing-functions-in-autophagy
#11
Sharadha Dayalan Naidu, Dina Dikovskaya, Egle Gaurilcikaite, Elena V Knatko, Zachary R Healy, Hema Mohan, Glenn Koh, Axel Laurell, Graeme Ball, David Olagnier, Laureano de la Vega, Ian G Ganley, Paul Talalay, Albena T Dinkova-Kostova
Autophagy plays a critical role in the maintenance of cellular homeostasis by degrading proteins, lipids and organelles. Autophagy is activated in response to stress, but its regulation in the context of other stress response pathways, such as those mediated by heat shock factor 1 (HSF1) and nuclear factor-erythroid 2 p45-related factor 2 (NRF2), is not well understood. We found that the Michael acceptor bis(2-hydoxybenzylidene)acetone (HBB2), a dual activator of NRF2 and HSF1, protects against the development of UV irradiation-mediated cutaneous squamous cell carcinoma in mice...
September 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28874413/a-phase-ii-trial-of-neoadjuvant-mk-2206-an-akt-inhibitor-with-anastrozole-in-clinical-stage-ii-or-iii-pik3ca-mutant-er-positive-and-her2-negative-breast-cancer
#12
Cynthia X Ma, Vera Suman, Matthew P Goetz, Donald Northfelt, Mark E Burkard, Foluso Ademuyiwa, Michael Naughton, Julie Margenthaler, Rebecca Aft, Richard Gray, Amye Tevaarwerk, Lee Wilke, Tufia Haddad, Timothy Moynihan, Charles Loprinzi, Tina Hieken, Erica K Barnell, Zachary L Skidmore, Yan-Yang Feng, Kilannin Krysiak, Jeremy Hoog, Zhanfang Guo, Leslie Nehring, Kari B Wisinski, Elaine Mardis, Ian S Hagemann, Kiran Vij, Souzan Sanati, Hussam Al-Kateb, Obi L Griffith, Malachi Griffith, Laurence Doyle, Charles Erlichman, Matthew J Ellis
Purpose: Hyperactivation of AKT is common and associated with endocrine resistance in estrogen receptor-positive (ER(+)) breast cancer. The allosteric pan-AKT inhibitor MK-2206 induced apoptosis in PIK3CA-mutant ER(+) breast cancer under estrogen-deprived condition in preclinical studies. This neoadjuvant phase II trial was therefore conducted to test the hypothesis that adding MK-2206 to anastrozole induces pathologic complete response (pCR) in PIK3CA mutant ER(+) breast cancer.Experimental Design: Potential eligible patients with clinical stage II/III ER(+)/HER2(-) breast cancer were preregistered and received anastrozole (goserelin if premenopausal) for 28 days in cycle 0 pending tumor PIK3CA sequencing...
September 5, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28871997/single-fraction-stereotactic-radiosurgery-srs-alone-versus-surgical-resection-and-srs-for-large-brain-metastases-a-multi-institutional-analysis
#13
MULTICENTER STUDY
Roshan S Prabhu, Robert H Press, Kirtesh R Patel, Danielle M Boselli, James T Symanowski, Scott P Lankford, Robert J McCammon, Benjamin J Moeller, John H Heinzerling, Carolina E Fasola, Anthony L Asher, Ashley L Sumrall, Zachary S Buchwald, Walter J Curran, Hui-Kuo G Shu, Ian Crocker, Stuart H Burri
PURPOSE: Stereotactic radiosurgery (SRS) dose is limited by brain metastasis (BM) size. The study goal was to retrospectively determine whether there is a benefit for intracranial outcomes and overall survival (OS) for gross total resection with single-fraction SRS versus SRS alone for patients with large BMs. METHODS AND MATERIALS: A large BM was defined as ≥4 cm(3) (2 cm in diameter) prior to the study. We reviewed the records of consecutive patients treated with single-fraction SRS alone or surgery with preoperative or postoperative SRS between 2005 and 2013 from 2 institutions...
October 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28833757/the-sawtooth-ekg-pattern-of-typical-atrial-flutter-is-not-related-to-slow-conduction-velocity-at-the-cavotricuspid-isthmus
#14
Arunashis Sau, Markus B Sikkel, Vishal Luther, Ian Wright, Fernando Guerrero, Michael Koa-Wing, David Lefroy, Nicholas Linton, Norman Qureshi, Zachary Whinnett, Phang Boon Lim, Prapa Kanagaratnam, Nicholas S Peters, D Wyn Davies
INTRODUCTION: We hypothesized that very high-density mapping of typical atrial flutter (AFL) would facilitate a more complete understanding of its circuit. Such very high-density mapping was performed with the RhythmiaTM (Boston Scientific) mapping system using its 64 electrode basket catheter. METHODS AND RESULTS: Data were acquired from 13 patients in AFL. Functional anatomy of the right atrium (RA) was readily identified during mapping including the Crista Terminalis and Eustachian ridge...
December 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28795719/titanium-redox-catalysis-insights-and-applications-of-an-earth-abundant-base-metal
#15
Zachary W Davis-Gilbert, Ian A Tonks
π-Acid ancillary ligands, reactants, or products can stabilize reactive low valent Ti intermediates through backbonding, and present opportunities for the development of vast new classes of Ti-catalyzed redox reactions with practical applications.
September 12, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28794122/organizational-structure-staffing-resources-and-educational-initiatives-in-cardiac-intensive-care-units-in-the-united-states-an-american-heart-association-acute-cardiac-care-committee-and-american-college-of-cardiology-critical-care-cardiology-working-group
#16
Sean van Diepen, Christopher B Fordyce, Zachary K Wegermann, Christopher B Granger, Amanda Stebbins, David A Morrow, Michael A Solomon, Jeffrey Soble, Timothy D Henry, Ian C Gilchrist, Jason N Katz, Mauricio G Cohen, L Kristin Newby
No abstract text is available yet for this article.
August 2017: Circulation. Cardiovascular Quality and Outcomes
https://www.readbyqxmd.com/read/28726771/rapid-elicitation-of-broadly-neutralizing-antibodies-to-hiv-by-immunization-in-cows
#17
Devin Sok, Khoa M Le, Melissa Vadnais, Karen L Saye-Francisco, Joseph G Jardine, Jonathan L Torres, Zachary T Berndsen, Leopold Kong, Robyn Stanfield, Jennifer Ruiz, Alejandra Ramos, Chi-Hui Liang, Patricia L Chen, Michael F Criscitiello, Waithaka Mwangi, Ian A Wilson, Andrew B Ward, Vaughn V Smider, Dennis R Burton
No immunogen to date has reliably elicited broadly neutralizing antibodies to HIV in humans or animal models. Advances in the design of immunogens that antigenically mimic the HIV envelope glycoprotein (Env), such as the soluble cleaved trimer BG505 SOSIP, have improved the elicitation of potent isolate-specific antibody responses in rabbits and macaques, but so far failed to induce broadly neutralizing antibodies. One possible reason for this failure is that the relevant antibody repertoires are poorly suited to target the conserved epitope regions on Env, which are somewhat occluded relative to the exposed variable epitopes...
August 3, 2017: Nature
https://www.readbyqxmd.com/read/28690352/generation-of-ti-ii-alkyne-trimerization-catalysts-in-the-absence-of-strong-metal-reductants
#18
Xin Yi See, Evan P Beaumier, Zachary W Davis-Gilbert, Peter L Dunn, Jacob A Larsen, Adam J Pearce, T Alex Wheeler, Ian A Tonks
Low-valent Ti(II) species have typically been synthesized by the reaction of Ti(IV) halides with strong metal reductants. Herein we report that Ti(II) species can be generated simply by reacting Ti(IV) imido complexes with 2 equiv of alkyne, yielding a metallacycle that can reductively eliminate pyrrole while liberating Ti(II). In order to probe the generality of this process, Ti(II)-catalyzed alkyne trimerization reactions were carried out with a diverse range of Ti(IV) precatalysts.
April 10, 2017: Organometallics
https://www.readbyqxmd.com/read/28668668/postoperative-stereotactic-radiosurgery-for-resected-brain-metastases-a-comparison-of-outcomes-for-large-resection-cavities
#19
Jim Zhong, Matthew J Ferris, Jeffrey Switchenko, Robert H Press, Zachary Buchwald, Jeffrey J Olson, Bree R Eaton, Walter J Curran, Hui-Kuo G Shu, Ian R Crocker, Kirtesh R Patel
PURPOSE: Although historical trials have established the role of surgical resection followed by whole brain irradiation (WBRT) for brain metastases, WBRT has recently been shown to cause significant neurocognitive decline. Many practitioners have employed postoperative stereotactic radiosurgery (SRS) to tumor resection cavities to increase local control without causing significant neurocognitive sequelae. However, studies analyzing outcomes of large brain metastases treated with resection and postoperative SRS are lacking...
April 26, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28589001/multisite-prospective-investigation-of-psychological-outcomes-following-cataract-surgery-in-vietnam
#20
David Berle, Zachary Steel, Beverley M Essue, Lisa Keay, Stephen Jan, Huynh Tan Phuc, Maree L Hackett
BACKGROUND: Cataract surgery is a low-cost and effective intervention. There is increasing evidence to suggest that cataract surgery is associated with improvements in mobility, overall functioning and reductions in psychological distress. Within low-income and middle-income countries, cataract surgery has also been documented to lead to reductions in psychological distress; however, differences in economic activity and engagement in paid and domestic work in these countries may moderate such reductions...
January 2017: BMJ Global Health
keyword
keyword
997
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"