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https://www.readbyqxmd.com/read/28105687/a-research-review-on-clinical-needs-technical-requirements-and-normativity-in-the-design-of-surgical-robots
#1
REVIEW
Carlos Eduardo Díaz, Roemi Fernández, Manuel Armada, Felipe García
Nowadays robots play an important role in society, mainly due to the significant benefits they provide when utilized for assisting human beings in the execution of dangerous or repetitive tasks. Medicine is one of the fields in which robots are gaining greater use and development, especially those employed in minimally invasive surgery (MIS). However, due to the particular conditions of the human body where robots have to act, the design of these systems is complex, not only from a technical point of view, but also because the clinical needs and the normativity aspects are important considerations that have to be taken into account in order to achieve better performances and more secure systems for patients and surgeons...
January 20, 2017: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
https://www.readbyqxmd.com/read/28100001/transplantation-tolerance-don-t-forget-about-the-b-cells
#2
REVIEW
Anita S Chong, Stella H Khiew
Establishing a state of transplantation tolerance that leads to indefinite graft survival without the need for lifelong immunosuppression has been successfully achieved in limited numbers of transplant recipients in the clinic. These successes led to studies aimed at identifying potential biomarkers that diagnose allograft tolerance and identify the patients most amenable to drug minimization, and implicated an enriched B cell signature of tolerance. The emergence of a specialized subset of regulatory B cell (Bregs) that possess immune-modulatory function in inflammation and autoimmune disease, raised the possibility that Bregs play critical roles in the promotion of transplantation tolerance and that Bregs are the underlying explanation for the B cell signature of tolerance...
January 18, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28099441/puma-and-nf-kb-are-cell-signaling-predictors-of-reovirus-oncolysis-of-breast-cancer
#3
Chandini Thirukkumaran, Zhong-Qiao Shi, Ponnampalam Thirukkumaran, Joanne Luider, Karen Kopciuk, Jason Spurrell, Kate Elzinga, Don Morris
BACKGROUND AND PURPOSE: Reovirus is a ubiquitous RNA virus that exploits aberrant signaling pathways for its replication. The oncolytic potential of reovirus against numerous cancers under pre-clinical/clinical conditions has been documented by us and others. Despite its proven clinical activity, the underlying mechanisms of reovirus oncolysis is still not well elucidated. If reovirus therapy is to be optimized for cancer, including breast cancer patients, it is imperative to understand the mechanisms of reovirus oncolysis, especially in treatment of resistant tumour...
2017: PloS One
https://www.readbyqxmd.com/read/28094016/a-single-cell-roadmap-of-lineage-bifurcation-in-human-esc-models-of-embryonic-brain-development
#4
Zizhen Yao, John K Mich, Sherman Ku, Vilas Menon, Anne-Rachel Krostag, Refugio A Martinez, Leon Furchtgott, Heather Mulholland, Susan Bort, Margaret A Fuqua, Ben W Gregor, Rebecca D Hodge, Anu Jayabalu, Ryan C May, Samuel Melton, Angelique M Nelson, N Kiet Ngo, Nadiya V Shapovalova, Soraya I Shehata, Michael W Smith, Leah J Tait, Carol L Thompson, Elliot R Thomsen, Chaoyang Ye, Ian A Glass, Ajamete Kaykas, Shuyuan Yao, John W Phillips, Joshua S Grimley, Boaz P Levi, Yanling Wang, Sharad Ramanathan
During human brain development, multiple signaling pathways generate diverse cell types with varied regional identities. Here, we integrate single-cell RNA sequencing and clonal analyses to reveal lineage trees and molecular signals underlying early forebrain and mid/hindbrain cell differentiation from human embryonic stem cells (hESCs). Clustering single-cell transcriptomic data identified 41 distinct populations of progenitor, neuronal, and non-neural cells across our differentiation time course. Comparisons with primary mouse and human gene expression data demonstrated rostral and caudal progenitor and neuronal identities from early brain development...
January 5, 2017: Cell Stem Cell
https://www.readbyqxmd.com/read/28092987/emerging-treatment-approaches-for-myeloma-related-bone-disease
#5
Maria Gavriatopoulou, Meletios A Dimopoulos, Efstathios Kastritis, Evangelos Terpos
Multiple myeloma is characterized by the presence of osteolytic lesions that leads to devastating skeletal-related events in the majority of patients. Myeloma bone disease is attributed to increased osteoclastic and suppressed osteoblastic activity. Areas covered: Bisphosphonates remain the main treatment option, however they have limitations on their own. Understanding the pathogenesis of myeloma bone disease may provide a roadmap for new therapeutic approaches. The pathway of RANKRANKLOPG pathway has revealed denosumab, a monoclonal antibody targeting RANKL as a novel emerging therapy for myeloma-related bone disease...
January 17, 2017: Expert Review of Hematology
https://www.readbyqxmd.com/read/28088100/exploiting-molecular-motors-as-nanomachines-the-mechanisms-of-de-novo-and-re-engineered-cytoskeletal-motors
#6
REVIEW
Nicole V DelRosso, Nathan D Derr
Cytoskeletal molecular motors provide exciting proof that nanoscale transporters can be highly efficient, moving for microns along filamentous tracks by hydrolyzing ATP to fuel nanometer-size steps. For nanotechnology, such conversion of chemical energy into productive work serves as an enticing platform for re-purposing and re-engineering. It also provides a roadmap for successful molecular mechanisms that can be mimicked to create de novo molecular motors for nanotechnology applications. Here we focus specifically on how the mechanisms of molecular motors are being re-engineered for greater control over their transport parameters...
January 11, 2017: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/28069485/alternative-approaches-for-identifying-acute-systemic-toxicity-moving-from-research-to-regulatory-testing
#7
REVIEW
Jon Hamm, Kristie Sullivan, Amy J Clippinger, Judy Strickland, Shannon Bell, Barun Bhhatarai, Bas Blaauboer, Warren Casey, David Dorman, Anna Forsby, Natàlia Garcia-Reyero, Sean Gehen, Rabea Graepel, Jon Hotchkiss, Anna Lowit, Joanna Matheson, Elissa Reaves, Louis Scarano, Catherine Sprankle, Jay Tunkel, Dan Wilson, Menghang Xia, Hao Zhu, David Allen
Acute systemic toxicity testing provides the basis for hazard labeling and risk management of chemicals. A number of international efforts have been directed at identifying non-animal alternatives for in vivo acute systemic toxicity tests. A September 2015 workshop, Alternative Approaches for Identifying Acute Systemic Toxicity: Moving from Research to Regulatory Testing, reviewed the state-of-the-science of non-animal alternatives for this testing and explored ways to facilitate implementation of alternatives...
January 6, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28068757/can-a-black-phosphorus-schottky-barrier-transistor-be-good-enough
#8
Ruge Quhe, Xiyou Peng, Yuanyuan Pan, Meng Ye, Yangyang Wang, Han Zhang, Shenyan Feng, Qiaoxuan Zhang, Junjie Shi, Jinbo Yang, Dapeng Yu, Ming Lei, Jing Lu
Experimental two-dimensional (2D) black phosphorus (BP) transistors typically appear in the form of Schottky-barrier field effect transistors (SBFETs), but their performance limit remains open. We investigate the performance limit of monolayer BP SBFETs in the sub-10 nm scale by using ab initio quantum transport simulations. The devices with 2D graphene electrodes are apparently superior to those with bulk Ti electrodes due to their smaller and tunable Schottky barrier heights and the absence of metal induced gap states in the channels...
January 10, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28065687/restless-legs-syndrome-and-cardiovascular-disease-a-research-roadmap
#9
REVIEW
Daniel J Gottlieb, Virend K Somers, Naresh M Punjabi, John W Winkelman
In this paper, we first critically appraise the epidemiologic literature examining the association of restless legs syndrome (RLS) with cardiovascular disease (CVD) and then consider whether lessons learned from the study of cardiovascular consequences of other sleep disorders might inform a research agenda to examine the potential mechanisms of cardiovascular morbidity of RLS. Cross-sectional and longitudinal studies are both mixed as to whether there is a meaningful association of RLS and CVD. On the other hand, numerous cross-sectional and longitudinal observational studies have shown a strong association of obstructive sleep apnea (OSA) with CVD risk...
October 27, 2016: Sleep Medicine
https://www.readbyqxmd.com/read/28060419/a-molecular-roadmap-of-definitive-erythropoiesis-from-human-induced-pluripotent-stem-cells
#10
Muhammad A Razaq, Stephen Taylor, David J Roberts, Lee Carpenter
Human induced pluripotent stem cells (hiPSCs) are being considered for use in understanding haematopoietic disorders and as a potential source of in vitro manufactured red cells. Here, we show that hiPSCs are able to recapitulate various stages of developmental erythropoiesis. We show that primitive erythroblasts arise first, express CD31(+) with CD235a(+) , embryonic globins and red cell markers, but fail to express the hallmark red cell transcripts of adult erythropoiesis. When hiPSC-derived CD45(+) CD235a(-) haematopoietic progenitors are isolated on day 12 and further differentiated on OP9 stroma, they selectively express CD36(+) and CD235a(+) , adult erythroid transcripts for transcription factors (e...
January 6, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28057999/nephron-sparing-surgery-in-bilateral-wilms-tumor-a-report-of-two-cases
#11
Sohrab Arora, Sharmad Kudchadkar, Priyank Yadav, M S Ansari
Nephron-sparing surgery (NSS) has been proposed by many as an alternative to bilateral nephrectomies and renal replacement therapy in bilateral Wilms' tumor (BWT). NSS is not without significant recurrence, morbidity, and mortality. Long-term follow-up, especially with regard to the renal function, remains lacking. Preoperative computed tomography angiogram can help prepare a roadmap for NSS but can underestimate the salvageable parenchyma due to compression of normal adjacent parenchyma. Intraoperative ultrasound can delineate the boundary of surgical margin and help achieve negative margins...
October 2016: Urology Annals
https://www.readbyqxmd.com/read/28056037/accurate-promoter-and-enhancer-identification-in-127-encode-and-roadmap-epigenomics-cell-types-and-tissues-by-genostan
#12
Benedikt Zacher, Margaux Michel, Björn Schwalb, Patrick Cramer, Achim Tresch, Julien Gagneur
Accurate maps of promoters and enhancers are required for understanding transcriptional regulation. Promoters and enhancers are usually mapped by integration of chromatin assays charting histone modifications, DNA accessibility, and transcription factor binding. However, current algorithms are limited by unrealistic data distribution assumptions. Here we propose GenoSTAN (Genomic STate ANnotation), a hidden Markov model overcoming these limitations. We map promoters and enhancers for 127 cell types and tissues from the ENCODE and Roadmap Epigenomics projects, today's largest compendium of chromatin assays...
2017: PloS One
https://www.readbyqxmd.com/read/28052101/defining-transcriptional-regulatory-mechanisms-for-primary-let-7-mirnas
#13
Xavier Gaeta, Luat Le, Ying Lin, Yuan Xie, William E Lowry
The let-7 family of miRNAs have been shown to control developmental timing in organisms from C. elegans to humans; their function in several essential cell processes throughout development is also well conserved. Numerous studies have defined several steps of post-transcriptional regulation of let-7 production; from pri-miRNA through pre-miRNA, to the mature miRNA that targets endogenous mRNAs for degradation or translational inhibition. Less-well defined are modes of transcriptional regulation of the pri-miRNAs for let-7...
2017: PloS One
https://www.readbyqxmd.com/read/28051972/characteristics-classification-and-prevention-of-child-maltreatment-fatalities
#14
James E McCarroll, Joscelyn E Fisher, Stephen J Cozza, Renè J Robichaux, Carol S Fullerton
BACKGROUND: Preventing child maltreatment fatalities is a critical goal of the U.S. society and the military services. Fatality review boards further this goal through the analysis of circumstances of child deaths, making recommendations for improvements in practices and policies, and promoting increased cooperation among the many systems that serve families. The purpose of this article is to review types of child maltreatment death, proposed classification models, risk and protective factors, and prevention strategies...
January 2017: Military Medicine
https://www.readbyqxmd.com/read/28050133/the-experiences-of-cancer-survivors-while-transitioning-from-tertiary-to-primary-care
#15
B B Franco, L Dharmakulaseelan, A McAndrew, S Bae, M C Cheung, S Singh
PURPOSE: In current fiscally constrained health care systems, the transition of cancer survivors to primary care from tertiary care settings is becoming more common and necessary. The purpose of our study was to explore the experiences of survivors who are transitioning from tertiary to primary care. METHODS: One focus group and ten individual telephone interviews were conducted. Data saturation was reached with 13 participants. All sessions were audio-recorded, transcribed verbatim, and analyzed using a qualitative descriptive approach...
December 2016: Current Oncology
https://www.readbyqxmd.com/read/28049318/frequency-analysis-of-the-laser-driven-nonlinear-dynamics-of-hcn
#16
A Lopez-Pina, J C Losada, R M Benito, F Borondo
We study the vibrational dynamics of a model for the HCN molecule in the presence of a monochromatic laser field. The variation of the structural behavior of the system as a function of the laser frequency is analyzed in detail using the smaller alignment index, frequency maps, and diffusion coefficients. It is observed that the ergodicity of the system depends on the frequency of the excitation field, especially in its transitions from and into chaos. This provides a roadmap for the possibility of bond excitation and dissociation in this molecule...
December 28, 2016: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28048570/we-ab-204-05-d-i-in-nih-funding-research
#17
D Chew
: Many efforts have been made to increase diversity in the science workforce. In order for us to be competitive in innovation and ingenuity we need to reach out to any source of intellectual talent. Having greater diversity can only increase the creativity in medical physics. In order for students to succeed academically they need role models and mentors with whom they can identify. Literature has shown that racial and ethnic diversity has both direct and indirect positive effects on the educational outcomes, career advancement and motivation of students...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048545/we-de-207a-04-advances-in-radiological-neuro-endovascular-interventional-imaging
#18
S Rudin
: 1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048494/we-ab-204-01-welcome
#19
B Curran
: Many efforts have been made to increase diversity in the science workforce. In order for us to be competitive in innovation and ingenuity we need to reach out to any source of intellectual talent. Having greater diversity can only increase the creativity in medical physics. In order for students to succeed academically they need role models and mentors with whom they can identify. Literature has shown that racial and ethnic diversity has both direct and indirect positive effects on the educational outcomes, career advancement and motivation of students...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048454/we-de-207a-00-advances-in-image-guided-neurointerventions-clinical-pull-and-technology-push
#20
Jeffrey Siewerdsen, Rebecca Fahrig
: 1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures...
June 2016: Medical Physics
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