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https://www.readbyqxmd.com/read/27909656/outcomes-of-demineralized-bone-matrix-enriched-with-concentrated-bone-marrow-aspirate-in-lumbar-fusion
#1
Remi M Ajiboye, Mark A Eckardt, Jason T Hamamoto, Benjamin Plotkin, Michael D Daubs, Jeffrey C Wang
BACKGROUND: Multiple studies have demonstrated that a significant amount of variability exists in various demineralized bone matrix (DBM) formulations, which casts doubts on its reliability in consistently promoting fusion. Bone marrow aspirate (BMA) is a cellular based graft that contains mesenchymal stem cells (MSCs) and growth factors can confer osteogenic and osteoinductive potential to DBM. The goal of this study was to describe the outcome of DBM enriched with concentrated BMA in patients undergoing combined lumbar interbody and posterolateral fusion...
2016: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/27902447/a-unique-type-of-gsk-3-inhibitor-brings-new-opportunities-to-the-clinic
#2
Avital Licht-Murava, Rom Paz, Lilach Vaks, Limor Avrahami, Batya Plotkin, Miriam Eisenstein, Hagit Eldar-Finkelman
Development of protein kinase inhibitors is a focus of many drug discovery programs. A major problem, however, is the limited specificity of the commonly used adenosine triphosphate-competitive inhibitors and the weak inhibition of the more selective substrate-competitive inhibitors. Glycogen synthase kinase-3 (GSK-3) is a promising drug target for treating neurodegenerative disorders, including Alzheimer's disease (AD), but most GSK-3 inhibitors have not reached the clinic. We describe a new type of GSK-3 inhibitor, L807mts, that acts through a substrate-to-inhibitor conversion mechanism that occurs within the catalytic site of the enzyme...
November 15, 2016: Science Signaling
https://www.readbyqxmd.com/read/27900643/first-use-of-patient-reported-outcomes-measurement-information-system-promis-measures-in-adults-with-neurofibromatosis
#3
Mojtaba Talaei-Khoei, Eric Riklin, Vanessa L Merker, Monica R Sheridan, Justin T Jordan, Scott R Plotkin, Ana-Maria Vranceanu
The patient reported outcomes measurement information system (PROMIS) provides clinicians and researchers access to reliable, validated measures of physical, mental, and social well-being. The use of PROMIS can facilitate comparisons among clinical subpopulations and with the U.S. general population. We report on the first study using PROMIS measures in patients with neurofibromatosis (NF). Eighty-six adult patients (mean age = 44; 55% female; 87% white; 50% NF1, 41% NF2 and 9% schwannomatosis) completed a battery of PROMIS computerized adaptive tests (CATs)...
November 29, 2016: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/27898663/as-simple-as-possible-but-not-simpler-exploring-the-fidelity-of-coarse-grained-protein-models-for-simulated-force-spectroscopy
#4
Mona Habibi, Jörg Rottler, Steven S Plotkin
Mechanical unfolding of a single domain of loop-truncated superoxide dismutase protein has been simulated via force spectroscopy techniques with both all-atom (AA) models and several coarse-grained models having different levels of resolution: A Gō model containing all heavy atoms in the protein (HA-Gō), the associative memory, water mediated, structure and energy model (AWSEM) which has 3 interaction sites per amino acid, and a Gō model containing only one interaction site per amino acid at the Cα position (Cα-Gō)...
November 2016: PLoS Computational Biology
https://www.readbyqxmd.com/read/27888062/neurotrophin-biology-at-ngf-2016-from-fundamental-science-to-clinical-applications
#5
REVIEW
Joshua L Plotkin, Chengbiao Wu
No abstract text is available yet for this article.
November 22, 2016: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/27885097/results-of-relid-study-2014-buenos-aires-argentina-retrospective-evaluation-of-lens-injuries-and-dose
#6
C Papp, M Romano-Miller, A Descalzo, S Michelin, A Molinari, A Rossini, C Plotkin, G Bodino, G Esperanza, M Di Giorgio, R Touzet
High levels of scatter radiation in catheterization laboratories may lead to posterior subcapsular opacities in the lens of the staff. The international Retrospective Evaluation of Lens Injuries and Dose (RELID) was performed in Argentina for the first time in 2010 in the context of the congress of the Latin American Society of Interventional Cardiology (SOLACI) and recently, in 2014, was carried out for the second time (SOLACI-CACI 2014). The 2014 study included 115 participants: interventional cardiologists, technicians and nurses...
November 24, 2016: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/27791109/evolutionary-consequences-of-behavioral-diversity
#7
Alexander J Stewart, Todd L Parsons, Joshua B Plotkin
Iterated games provide a framework to describe social interactions among groups of individuals. This body of work has focused primarily on individuals who face a simple binary choice, such as "cooperate" or "defect." Real individuals, however, can exhibit behavioral diversity, varying their input to a social interaction both qualitatively and quantitatively. Here we explore how access to a greater diversity of behavioral choices impacts the evolution of social dynamics in populations. We show that, in public goods games, some simple strategies that choose between only two possible actions can resist invasion by all multichoice invaders, even while engaging in relatively little punishment...
October 24, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27780629/pertussis-biology-epidemiology-and-prevention
#8
Mitra Saadatian-Elahi, Stanley Plotkin, Kingston H G Mills, Scott A Halperin, Peter B McIntyre, Valentina Picot, Jacques Louis, David R Johnson
Despite long-standing vaccination programs, substantial increases in reported cases of pertussis have been described in several countries during the last 5years. Cases among very young infants who are at greatest risk of pertussis-related hospitalizations and mortality are the most alarming. Multiple hypotheses including but not limited to the availability of more sensitive diagnostic tests, greater awareness, and waning vaccine-induced immunity over time have been posited for the current challenges with pertussis...
October 22, 2016: Vaccine
https://www.readbyqxmd.com/read/27769007/health-risk-assessment-of-exposures-to-a-high-molecular-weight-plasticizer-present-in-automobile-interiors
#9
Angela L Perez, Monty Liong, Kevin Plotkin, Keith P Rickabaugh, Dennis J Paustenbach
This study provides an exposure and risk assessment of diundecyl phthalate (DUP), a high molecular weight phthalate plasticizer present in automobile interiors. Total daily intake of DUP was calculated from DUP measured in wipe samples from vehicle seats from six automobiles. Four of the vehicles exhibited atypical visible surface residue on the seats. Two vehicles with no visible surface residue were sampled as a comparison. DUP was the predominant organic compound identified in each of the wipes from all seats...
October 18, 2016: Chemosphere
https://www.readbyqxmd.com/read/27759912/creation-of-an-international-registry-to-support-discovery-in-schwannomatosis
#10
K L Ostrow, A L Bergner, J Blakeley, D G Evans, R Ferner, J M Friedman, G J Harris, J T Jordan, B Korf, S Langmead, G Leschziner, V Mautner, V L Merker, L Papi, S R Plotkin, J M Slopis, M J Smith, A Stemmer-Rachamimov, K Yohay, A J Belzberg
Schwannomatosis is a tumor suppressor syndrome that causes multiple tumors along peripheral nerves. Formal diagnostic criteria were first published in 2005. Variability in clinical presentation and a relative lack of awareness of the syndrome have contributed to difficulty recognizing affected individuals and accurately describing the natural history of the disorder. Many critical questions such as the mutations underlying schwannomatosis, genotype-phenotype correlations, inheritance patterns, pathologic diagnosis of schwannomatosis-associated schwannomas, tumor burden in schwannomatosis, the incidence of malignancy, and the effectiveness of current, or new treatments remain unanswered...
October 19, 2016: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/27756647/dual-delivery-of-vegf-and-ang-1-in-ischemic-hearts-using-an-injectable-hydrogel
#11
Abdul Jalil Rufaihah, Nurul Azizah Johari, Srirangam Ramanujam Vaibavi, Marian Plotkin, Do Thi Di Thien, Theodoros Kofidis, Dror Seliktar
Acute myocardial infarction (MI) caused by ischemia is the most common cause of cardiac dysfunction. While growth factor therapy is promising, the retention in the highly vascularized myocardium is limited and prevents sustained activation needed for adequate cellular responses. Here, we demonstrated the use of polyethylene glycol-fibrinogen (PF) hydrogels for sustained dual delivery of vascular endothelial growth factor (VEGF) and angiopoietin-1 (ANG-1) to enhance myocardial repair and function. VEGF and ANG-1 were incorporated in PF hydrogels and their in vitro characteristics were studied...
October 15, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27726753/mr-imaging-and-us-of-the-wrist-tendons
#12
Benjamin Plotkin, Srihari C Sampath, Srinath C Sampath, Kambiz Motamedi
The tendons of the wrist are commonly symptomatic. They can be injured, infected, or inflamed. Magnetic resonance imaging and ultrasonography are useful tools for evaluating the wrist. Pathologic conditions of the wrist tendons include de Quervain tenosynovitis, extensor carpi ulnaris tendinopathy, rheumatoid tenosynovitis, infectious synovitis, tendon tears, hydroxyapatite deposition disease, intersection syndrome, tenosynovial giant cell tumor, and fibroma of the tendon sheath. In this article, we review the normal appearance of the wrist tendons, discuss relevant anatomy, and give an overview of common pathologic conditions affecting the wrist tendons...
October 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27704638/control-of-bone-anabolism-in-response-to-mechanical-loading-and-pth-by-distinct-mechanisms-downstream-of-the-pth-receptor
#13
J Delgado-Calle, X Tu, R Pacheco-Costa, K McAndrews, R Edwards, G Pellegrini, K Kuhlenschmidt, N Olivos, A Robling, M Peacock, L I Plotkin, T Bellido
Osteocytes integrate the responses of bone to mechanical and hormonal stimuli by mechanisms poorly understood. We report here that mice with conditional deletion of the parathyroid hormone (PTH) receptor 1 (Pth1r) in DMP1-8kb-expressing cells (cKO) exhibit a modest decrease in bone resorption leading to a mild increase in cancellous bone without changes in cortical bone. However, bone resorption in response to endogenous chronic elevation of PTH in growing or adult cKO mice induced by a low calcium diet remained intact, as the increased bone remodeling and bone loss was indistinguishable from that exhibited by control littermates...
October 5, 2016: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/27683064/pthrp-derived-peptides-restore-bone-mass-and-strength-in-diabetic-mice-additive-effect-of-mechanical-loading
#14
Marta Maycas, Kevin A McAndrews, Amy Y Sato, Gretel G Pellegrini, Drew M Brown, Matthew R Allen, Lilian I Plotkin, Arancha R Gortazar, Pedro Esbrit, Teresita Bellido
There is an unmet need to understand the mechanisms underlying skeletal deterioration in diabetes mellitus (DM) and to develop therapeutic approaches to treat bone fragility in diabetic patients. We demonstrate herein that mice with type 1 DM induced by streptozotocin exhibited low bone mass, inferior mechanical and material properties, increased bone resorption, decreased bone formation, increased apoptosis of osteocytes, and increased expression of the osteocyte-derived bone formation inhibitor Sost/sclerostin...
September 28, 2016: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/27644868/assessing-undue-influence
#15
Daniel A Plotkin, James E Spar, Howard L Horwitz
A claim of undue influence (UI) often figures prominently in will and trust contests and in other legal matters. Mental health professionals (MHPs) are frequently asked to provide expert opinions on UI, but the task is challenging, because of the lack of a clear definition of UI, and conflicting and contradictory recommendations in the literature on the specific conduct of the MHP in rendering opinions on UI. Recently, however, a California statutory scheme on UI applicable in will, trust, conservatorship, and financial elder abuse cases was adopted, bringing greater clarity to the meaning of the construct...
September 2016: Journal of the American Academy of Psychiatry and the Law
https://www.readbyqxmd.com/read/27613149/rubella-persistence-in-epidermal-keratinocytes-and-granuloma-m2-macrophages-in-patients-with-primary-immunodeficiencies
#16
Ludmila Perelygina, Stanley Plotkin, Pierre Russo, Timo Hautala, Francisco Bonilla, Hans D Ochs, Avni Joshi, John Routes, Kiran Patel, Claudia Wehr, Joseph Icenogle, Kathleen E Sullivan
No abstract text is available yet for this article.
August 31, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27602662/need-for-a-new-lyme-disease-vaccine
#17
Stanley A Plotkin
The worst recent failure to use an effective vaccine, in my view, has been the lack of prophylaxis against Lyme disease, although the low rate of complete vaccination against the human papillomaviruses is also in competition for this dubious honor. The Centers for Disease Control and Prevention..
September 8, 2016: New England Journal of Medicine
https://www.readbyqxmd.com/read/27571329/association-of-gba-mutations-and-the-e326k-polymorphism-with-motor-and-cognitive-progression-in-parkinson-disease
#18
Marie Y Davis, Catherine O Johnson, James B Leverenz, Daniel Weintraub, John Q Trojanowski, Alice Chen-Plotkin, Vivianna M Van Deerlin, Joseph F Quinn, Kathryn A Chung, Amie L Peterson-Hiller, Liana S Rosenthal, Ted M Dawson, Marilyn S Albert, Jennifer G Goldman, Glenn T Stebbins, Bryan Bernard, Zbigniew K Wszolek, Owen A Ross, Dennis W Dickson, David Eidelberg, Paul J Mattis, Martin Niethammer, Dora Yearout, Shu-Ching Hu, Brenna A Cholerton, Megan Smith, Ignacio F Mata, Thomas J Montine, Karen L Edwards, Cyrus P Zabetian
Importance: Parkinson disease (PD) is heterogeneous in symptom manifestation and rate of progression. Identifying factors that influence disease progression could provide mechanistic insight, improve prognostic accuracy, and elucidate novel therapeutic targets. Objective: To determine whether GBA mutations and the E326K polymorphism modify PD symptom progression. Design, Setting, and Participants: The entire GBA coding region was screened for mutations and E326K in 740 patients with PD enrolled at 7 sites from the PD Cognitive Genetics Consortium...
October 1, 2016: JAMA Neurology
https://www.readbyqxmd.com/read/27557986/what-messages-are-adolescent-voluntary-medical-male-circumcision-vmmc-clients-getting-and-how-findings-from-an-observational-study-in-tanzania
#19
Dorica Boyee, Erin Peacock, Marya Plotkin, Augustino Hellar, Hally Mahler, Elizabeth Edouard, Renatus Kisendi, Erick Mlanga, Emmanuel Njeuhmeli, Katherine Andrinopoulos
Uncircumcised adolescent males in sub-Saharan Africa are an important group to reach with voluntary medical male circumcision (VMMC) services due to high HIV burden occurring among this age group. Appropriateness of the content and delivery of sexual health and HIV prevention messages to adolescent VMMC clients has not been extensively described. A study was conducted in Tanzania to examine quality, delivery and content of messages provided to adolescent (aged 15-19) and adult (aged 20+) VMMC clients (n = 320)...
August 24, 2016: AIDS and Behavior
https://www.readbyqxmd.com/read/27554275/host-environmental-signals-and-effects-on-biofilm-formation
#20
Dana Feraco, Mary Blaha, Shaza Khan, Jacalyn M Green, Balbina J Plotkin
Biofilm matrix formation is a phenotype linked to the ability to survive a hostile host environment that includes the presence of antimicrobial peptides and serum factors. Multiple hormones and other host derived factors have been shown to function as exogenous quorum signaling compound homologs that inform microbes of their in situ presence, thus triggering a shift from a planktonic to the sessile biofilm phenotype. The focus of this review is to describe the impact various host-derived factors have on the initial steps required for biofilm formation, i...
October 2016: Microbial Pathogenesis
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