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https://www.readbyqxmd.com/read/28324941/3-d-registration-on-carotid-artery-imaging-data-mri-for-different-timesteps
#1
Paschalis A Bizopoulos, Antonis Sakellarios, Lampros K Michalis, Dimitrios D Koutsouris, Dimitrios I Fotiadis
A common problem which is faced by the researchers when dealing with arterial carotid imaging data is the registration of the geometrical structures between different imaging modalities or different timesteps. The use of the "Patient Position" DICOM field is not adequate to achieve accurate results due to the fact that the carotid artery is a relatively small structure and even imperceptible changes in patient position and/or direction make it difficult. While there is a wide range of simple/advanced registration techniques in the literature, there is a considerable number of studies which address the geometrical structure of the carotid artery without using any registration technique...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324890/regulation-of-itga3-by-the-dual-stranded-microrna-199-family-as-a-potential-prognostic-marker-in-bladder-cancer
#2
Takashi Sakaguchi, Hirofumi Yoshino, Masaya Yonemori, Kazutaka Miyamoto, Satoshi Sugita, Ryosuke Matsushita, Toshihiko Itesako, Shuichi Tatarano, Masayuki Nakagawa, Hideki Enokida
BACKGROUND: Based on the microRNA (miRNA) signature of bladder cancer (BC) by deep sequencing, we recently found that several double-stranded mature miRNAs derived from the same pre-miRNAs were sufficiently expressed and acted as tumour suppressors by regulating common target genes in BC. Our deep-sequencing signature of BC showed that all miR-199 family members (miR-199a-3p/-5p and miR-199b-3p/-5p) were also downregulated. We hypothesised that these miRNAs may function as tumour suppressors by regulating common target genes...
March 21, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28324864/ventricular-wall-biomaterial-injection-therapy-after-myocardial-infarction-advances-in-material-design-mechanistic-insight-and-early-clinical-experiences
#3
REVIEW
Yang Zhu, Yasumoto Matsumura, William R Wagner
Intramyocardial biomaterial injection therapy for myocardial infarction has made significant progress since concept initiation more than 10 years ago. The interim successes and progress in the first 5 years have been extensively reviewed. During the last 5 years, two phase II clinical trials have reported their long term follow up results and many additional biomaterial candidates have reached preclinical and clinical testing. Also in recent years deeper investigations into the mechanisms behind the beneficial effects associated with biomaterial injection therapy have been pursued, and a variety of process and material parameters have been evaluated for their impact on therapeutic outcomes...
March 1, 2017: Biomaterials
https://www.readbyqxmd.com/read/28324750/biological-mechanisms-of-immune-escape-and-implications-for-immunotherapy-in-head-and-neck-squamous-cell-carcinoma
#4
REVIEW
Jennifer D Moy, Jessica M Moskovitz, Robert L Ferris
Head and neck squamous cell carcinoma (HNSCC) is an aggressive malignancy with high morbidity and mortality. Despite advances in cytotoxic therapies and surgical techniques, overall survival (OS) has not improved over the past few decades. This emphasises the need for intense investigation into novel therapies with good tumour control and minimal toxicity. Cancer immunotherapy has led this endeavour, attempting to improve tumour recognition and expand immune responses against tumour cells. While various forms of HNSCC immunotherapy are in preclinical trials, the most promising direction thus far has been with monoclonal antibodies (mAbs), targeting growth factor and immune checkpoint receptors...
March 18, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28324674/osteoblast-osteoclast-interactions
#5
Xiao Chen, Zhongqiu Wang, Na Duan, Guoying Zhu, Edward M Schwarz, Chao Xie
Bone homeostasis depends on the resorption of bones by osteoclasts and formation of bones by the osteoblasts. Imbalance of this tightly coupled process can cause diseases such as osteoporosis. Thus, the mechanisms that regulate communication between osteoclasts and osteoblasts are critical to bone cell biology. It has been shown that osteoblasts and osteoclasts can communicate with each other through direct cell-cell contact, cytokines, and extracellular matrix interaction. Osteoblasts can affect osteoclast formation, differentiation, or apoptosis through several pathways, such as OPG/RANKL/RANK, RANKL/LGR4/RANK, Ephrin2/ephB4, and Fas/FasL pathways...
February 8, 2017: Connective Tissue Research
https://www.readbyqxmd.com/read/28324595/recent-advances-in-developing-antiviral-therapies-for-respiratory-syncytial-virus
#6
REVIEW
Brian C Shook, Kai Lin
Respiratory syncytial virus (RSV) infection presents a significant health challenge in small children, the elderly and immunocompromised patients. There is still a high unmet medical need among patients with RSV infection, and no specific antiviral therapy is available. The only approved agents are palivizumab, which has to be given prophylactically, mainly in high-risk infants, and ribavirin, which is rarely used due to toxicity concerns and questionable benefits. Efforts to develop new antiviral agents have been hampered by the perceived need for high safety hurdles in pediatric patient populations use and the lack of well-characterized druggable targets...
April 2017: Topics in Current Chemistry (Journal)
https://www.readbyqxmd.com/read/28324506/induction-of-site-specific-oxidative-damage-at-telomeres-by-killerred-fused-shelretin-proteins
#7
Rong Tan, Li Lan
Chronic oxidative stress is the major endogenous metabolic stress and contributes directly to telomere shortening and senescence. Understanding the dysfunction of telomeres under oxidative stress will greatly facilitate healthy aging and advance the treatment of aging-related diseases. Here, we describe the KR-TEL (KillerRed induced DNA damage at telomeres) system that induces site-specific oxidative damage at telomeres. We have developed the KR-TEL system by fusing killerred with the shelterin component TRF1 (KR-TRF1) or other shelterin proteins...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28324029/vital-directions-for-health-and-health-care-priorities-from-a-national-academy-of-medicine-initiative
#8
Victor J Dzau, Mark B McClellan, J Michael McGinnis, Sheila P Burke, Molly J Coye, Angela Diaz, Thomas A Daschle, William H Frist, Martha Gaines, Margaret A Hamburg, Jane E Henney, Shiriki Kumanyika, Michael O Leavitt, Ruth M Parker, Lewis G Sandy, Leonard D Schaeffer, Glenn D Steele, Pamela Thompson, Elias Zerhouni
Importance: Recent discussion has focused on questions related to the repeal and replacement of portions of the Affordable Care Act (ACA). However, issues central to the future of health and health care in the United States transcend the ACA provisions receiving the greatest attention. Initiatives directed to certain strategic and infrastructure priorities are vital to achieve better health at lower cost. Objectives: To review the most salient health challenges and opportunities facing the United States, to identify practical and achievable priorities essential to health progress, and to present policy initiatives critical to the nation's health and fiscal integrity...
March 21, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28323868/-waiting-for-daas-a-retrospective-chart-review-of-patients-with-untreated-hepatitis-c-in-rwanda
#9
Neil Gupta, Jules Kabahizi, Constance Mukabatsinda, Timothy David Walker, Emmanuel Musabeyezu, Athanase Kiromera, Jennifer Ilo Van Nuil, Kevin Steiner, Joia Mukherjee, Sabin Nsanzimana, Aimable Mbituyumuremyi
BACKGROUND: Access to treatment for hepatitis C virus (HCV) in sub-Saharan Africa is extremely limited. With the advent of direct acting antivirals (DAAs), highly effective and easy-to-deliver oral regimens are now available on the global market. This study was conducted to understand the background and characteristics of a national cohort of patients with HCV infection enrolled in care and awaiting therapy with DAAs. METHODS AND FINDINGS: We conducted a retrospective chart review of all adult patients with confirmed HCV infection who were currently enrolled in care and treatment at the four existing hepatitis referral centers in Rwanda...
2017: PloS One
https://www.readbyqxmd.com/read/28323541/3d-technology-of-sony-bloggie-has-no-advantage-in-decision-making-of-tennis-serve-direction-a-randomized-placebo-controlled-study
#10
Sicong Liu, Jason Ritchie, Camilo Sáenz-Moncaleano, Savanna K Ward, Cody Paulsen, Tyler Klein, Oscar Gutierrez, Gershon Tenenbaum
This study aimed at exploring whether 3D technology enhances tennis decision-making under the conceptual framework of human performance model. A 3 (skill-level: varsity, club, recreational) × 3 (experimental condition: placebo, weak 3D [W3D], strong 3D [S3D]) between-participant design was used. Allocated to experimental conditions by a skill-level stratified randomization, 105 tennis players judged tennis serve direction from video scenarios and rated their perceptions of enjoyment, flow, and presence during task performance...
March 21, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28323504/pembrolizumab-use-for-the-treatment-of-advanced-melanoma
#11
Pol Specenier
Until recently, overall long term survival in patients with stage IV melanoma was lower than 10 %. However, the treatment of melanoma has evolved rapidly over the last few years, with the advent of inhibitors of BRAF and MEK and of immunotherapeutic agents including ipilimumab, nivolumab, and pembrolizumab. Areas covered: This is a comprehensive review of the literature on the role of pembrolizumab in melanoma. Pembrolizumab is a Programmed Death Receptor 1 (PD-1) directed monoclonal antibody which is approved by FDA and EMA for the treatment of patients with metastatic melanoma...
March 21, 2017: Expert Opinion on Biological Therapy
https://www.readbyqxmd.com/read/28323477/-the-service-i-rendered-was-just-as-true-african-american-soldiers-and-veterans-as-activist-patients
#12
Jessica L Adler
In this article, I examine how African American soldiers and veterans experienced and shaped federally sponsored health care during and after World War I. Building on studies of the struggles of Black leaders and health care providers to win professional and public health advancement in the 1920s and 1930s, and of advocates to mobilize for health care rights in the mid-20th century, I focus primarily on the experiences and activism of patients in the interwar years. Private and government correspondence, congressional testimony, and reports from Black newspapers reveal that African American soldiers and veterans communicated directly with policymakers and bureaucrats regarding unequal treatment, assuming roles as "policy actors" who viewed health and medical care as "politics by other means...
March 21, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28320024/-therapeutic-decisions-concerning-severe-neurological-diseases-and-at-the-end-of-life
#13
Christoph Burkhard Lücking
Modern medicine increasingly enables survival of life-threatening diseases. On the other side, however, especially in Neurology, the questions have to be addressed how intensive the initial treatment should be and how to deal with residual states when severe functional or cognitive deficits are expected. In these cases, it is not only important to decide which medical measures are appropriate for the patient, but also whether, given the prognosis, the patient would agree with the suggested measures. This article first describes the basis for each medical action, i...
March 2017: Fortschritte der Neurologie-Psychiatrie
https://www.readbyqxmd.com/read/28319486/igg4-related-disease
#14
Emanuele Bozzalla Cassione, John H Stone
PURPOSE OF REVIEW: Remarkable insights have been gleaned recently with regard to the pathophysiology of IgG4-related disease (IgG4-RD). These findings have direct implications for the development of targeted strategies for the treatment of this condition. RECENT FINDINGS: Oligoclonal expansions of cells of both the B and T lymphocyte lineages are present in the blood of patients with IgG4-RD. Oligoclonal expansions of plasmablasts are a good biomarker for disease activity...
March 17, 2017: Current Opinion in Rheumatology
https://www.readbyqxmd.com/read/28319070/foxa1-inhibits-prostate-cancer-neuroendocrine-differentiation
#15
J Kim, H Jin, J C Zhao, Y A Yang, Y Li, X Yang, X Dong, J Yu
Neuroendocrine prostate cancer (NEPC) has increasingly become a clinical challenge. The mechanisms by which neuroendocrine (NE) cells arises from prostate adenocarcinoma cells are poorly understood. FOXA1 is a transcription factor of the forkhead family that is required for prostate epithelial differentiation. In this study, we demonstrated that FOXA1 loss drives NE differentiation, demarcated by phenotypical changes and NEPC marker expressions. Mechanistically, this is mediated by FOXA1 binding to the promoter of interleukin 8 (IL-8), a chemokine previously shown elevated in NEPC, to directly inhibit its expression...
March 20, 2017: Oncogene
https://www.readbyqxmd.com/read/28319067/the-histone-demethylase-kdm3a-and-its-downstream-target-mcam-promote-ewing-sarcoma-cell-migration-and-metastasis
#16
M Sechler, J K Parrish, D K Birks, P Jedlicka
Ewing Sarcoma is the second most common solid pediatric malignant neoplasm of bone and soft tissue. Driven by EWS/Ets, or rarely variant, oncogenic fusions, Ewing Sarcoma is a biologically and clinically aggressive disease with a high propensity for metastasis. However, the mechanisms underpinning Ewing Sarcoma metastasis are currently not well understood. In the present study, we identify and characterize a novel metastasis-promotional pathway in Ewing Sarcoma, involving the histone demethylase KDM3A, previously identified by our laboratory as a new cancer-promoting gene in this disease...
March 20, 2017: Oncogene
https://www.readbyqxmd.com/read/28319063/compromised-brca1-palb2-interaction-is-associated-with-breast-cancer-risk
#17
T K Foo, M Tischkowitz, S Simhadri, T Boshari, N Zayed, K A Burke, S H Berman, P Blecua, N Riaz, Y Huo, Y C Ding, S L Neuhausen, B Weigelt, J S Reis-Filho, W D Foulkes, B Xia
The major breast cancer suppressor proteins BRCA1 and BRCA2 play essential roles in homologous recombination (HR)-mediated DNA repair, which is thought to be critical for tumor suppression. The two BRCA proteins are linked by a third tumor suppressor, PALB2, in the HR pathway. While truncating mutations in these genes are generally pathogenic, interpretation of missense variants remains a challenge. To date, patient-derived missense variants that disrupt PALB2 binding have been identified in BRCA1 and BRCA2; however, there has not been sufficient evidence to prove their pathogenicity in humans, and no variants in PALB2 that disrupt either its BRCA1 or BRCA2 binding have been reported...
March 20, 2017: Oncogene
https://www.readbyqxmd.com/read/28319041/practical-use-of-a-plastic-scintillator-for-quality-assurance-of-electron-beam-therapy
#18
Katsunori Yogo, Yuya Tatsuno, Masato Tsuneda, Yuki Aono, Daiki Mochizuki, Yoshiki Fujisawa, Akihiro Matsushita, Minoru Ishigami, Hiromichi Ishiyama, Kazushige Hayakawa
Quality assurance (QA) of the clinical electron beam is essential for performing accurate and safe radiation therapy. However, with advances in radiation therapy, QA tends to be labor-intensive and time consuming. Here, we propose the practical use of a tissue-equivalent plastic scintillator for quick and easy QA of clinical electron beams. This tool enabled us to verify simultaneously the constancy of output, beam quality, depth and lateral dose profiles during monthly QAs at lower doses of irradiation (small MUs)...
March 20, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28318662/mid-range-left-ventricular-ejection-fraction-clinical-profile-and-cause-of-death-in-ambulatory-patients-with-chronic-heart-failure
#19
Domingo A Pascual-Figal, Andreu Ferrero-Gregori, Ines Gomez-Otero, Rafael Vazquez, Juan Delgado-Jimenez, Jesus Alvarez-Garcia, Juan R Gimeno-Blanes, Fernando Worner-Diz, Alfredo Bardají, Luis Alonso-Pulpon, Jose Ramon Gonzalez-Juanatey, Juan Cinca
BACKGROUND: The intermediate group of patients with heart failure (HF) and mid-range left ventricular ejection fraction (HFmrEF) may constitute a specific phenotype, but a direct evidence is lacking. This study aimed to know whether this HF category is accompanied by a particular clinical phenotype and prognosis. METHODS AND RESULTS: This study includes 3446 ambulatory patients with chronic HF from two national registries. According to EF at enrollment, patients were classified as reduced (HFrEF, <40%), mid-range (HFmrEF, 40-49%) or preserved (HFpEF, ≥50%)...
March 9, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28318483/automated-atom-by-atom-three-dimensional-3d-reconstruction-of-field-ion-microscopy-data
#20
Michal Dagan, Baptiste Gault, George D W Smith, Paul A J Bagot, Michael P Moody
An automated procedure has been developed for the reconstruction of field ion microscopy (FIM) data that maintains its atomistic nature. FIM characterizes individual atoms on the specimen's surface, evolving subject to field evaporation, in a series of two-dimensional (2D) images. Its unique spatial resolution enables direct imaging of crystal defects as small as single vacancies. To fully exploit FIM's potential, automated analysis tools are required. The reconstruction algorithm developed here relies on minimal assumptions and is sensitive to atomic coordinates of all imaged atoms...
March 20, 2017: Microscopy and Microanalysis
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