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https://www.readbyqxmd.com/read/28531984/bioactive-materials-driven-primary-stability-on-titanium-biocomposites
#1
T A Dantas, C S Abreu, M M Costa, G Miranda, F S Silva, N Dourado, J R Gomes
The Ti6Al4V alloy constitutes an alternative choice to the most common metal-polymer solutions for total hip arthroplasty (THA) due to good biocompatibility, optimal mechanical properties and high load bearing capacity. However, as Ti6Al4V is not bioactive in its conventional form, hydroxyapatite (HAp) and tricalcium phosphate (TCP) have been widely used as coatings of metal prostheses due to their osteogenic properties and ability to form strong bonds with bone tissue. A promising approach consists in creating a bioactive surface metal matrix composite Ti6Al4V+β-TCP or Ti6Al4V+HAp, obtained by hot pressing (HP) of powders...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531219/pyldm-an-open-source-package-for-lifetime-density-analysis-of-time-resolved-spectroscopic-data
#2
Gabriel F Dorlhiac, Clyde Fare, Jasper J van Thor
Ultrafast spectroscopy offers temporal resolution for probing processes in the femto- and picosecond regimes. This has allowed for investigation of energy and charge transfer in numerous photoactive compounds and complexes. However, analysis of the resultant data can be complicated, particularly in more complex biological systems, such as photosystems. Historically, the dual approach of global analysis and target modelling has been used to elucidate kinetic descriptions of the system, and the identity of transient species respectively...
May 22, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28531156/molecular-techniques-for-the-detection-of-organisms-in-aquatic-environments-with-emphasis-on-harmful-algal-bloom-species
#3
REVIEW
Linda K Medlin, Jahir Orozco
Molecular techniques to detect organisms in aquatic ecosystems are being gradually considered as an attractive alternative to standard laboratory methods. They offer faster and more accurate means of detecting and monitoring species, with respect to their traditional homologues based on culture and microscopic counting. Molecular techniques are particularly attractive when multiple species need to be detected and/or are in very low abundance. This paper reviews molecular techniques based on whole cells, such as microscope-based enumeration and Fluorescence In-Situ Hybridization (FISH) and molecular cell-free formats, such as sandwich hybridization assay (SHA), biosensors, microarrays, quantitative polymerase chain reaction (qPCR) and real time PCR (RT-PCR)...
May 22, 2017: Sensors
https://www.readbyqxmd.com/read/28530823/nanomechanically-visualizing-drug-cell-interaction-at-the-early-stage-of-chemotherapy
#4
Yun-Long Wu, Wilfried Engl, Benhui Hu, Pingqiang Cai, Wan Ru Leow, Nguan Soon Tan, Chwee Teck Lim, Xiaodong Chen
A detailed understanding of chemotherapy is determined by the response of cell to the formation of the drug-target complex and its corresponding sudden or eventual cell death. However, visualization of this early but important process, encompassing the fast dynamics as well as complex network of molecular pathways, remains challenging. Herein, we report that the nanomechanical traction force is sensitive enough to reflect the early cellular response upon the addition of chemotherapeutical molecules in a real-time and non-invasive manner, due to interactions between chemotherapeutic drug and its cytoskeleton targets...
May 22, 2017: ACS Nano
https://www.readbyqxmd.com/read/28530346/-seeds-of-mindfulness-in-the-desert-preliminary-results-from-a-clinical-trial-in-the-mindfulness-clinic-mental-health-center-beer-sheva
#5
Lee Tibi Cohen, Keren Reiner Noy, Ayelet Shmulevich, Oded Arbel
INTRODUCTION: Mindfulness-based therapies are rooted in the Buddhist tradition, and promote cultivation of qualities such as open awareness, acceptance and compassion. While various studies have demonstrated the efficacy of integrating mindfulness in therapeutic practice for people suffering from clinical conditions such as depression and anxiety as well as the non-clinical population, this was rarely replicated in Israel. In the Mindfulness Clinic, located in the Mental Health Center, Beer Sheva, mindfulness workshops are now available for diverse populations dealing with various challenges such as daily stress, chronic pain, and depression...
December 2016: Harefuah
https://www.readbyqxmd.com/read/28530207/fabrication-of-biomimetic-bone-grafts-with-multi-material-3d-printing
#6
Nicholas Sears, Prachi Dhavalikar, Michael Whitely, Elizabeth Cosgriff-Hernandez
Extrusion deposition is a versatile method for the 3D printing of biomaterials such as hydrogels, ceramics, and suspensions. Recently, a new class of emulsion inks were developed that can be used to create tunable, hierarchically porous materials with a cure-on-dispense method. Propylene fumarate dimethacrylate (PFDMA) was selected to fabricate bone grafts using this technology due to its established biocompatibility, osteoconductivity, and good compressive properties. Scaffolds fabricated from PFDMA emulsion inks displayed compressive modulus and yield strength of approximately 15 and 1 MPa, respectively...
May 22, 2017: Biofabrication
https://www.readbyqxmd.com/read/28530050/-modern-over-the-good-and-old
#7
Sharon Baum, Aviv Barzilai
Modern dermatology is a reflection of the advances achieved in the general medical world. Thus, in recent years, dermatology encompasses many different fields and consequently, various subspecialties were created. In addition to dermatopathology and dermatosurgery, which are formal subspecialties, other fields of expertise include: autoimmune diseases, especially bullous diseases, hair and nail disorders, allergic diseases, infectious diseases and pigmented lesion clinics and oncodermatology. This current issue of "Harefuah" incorporates research and review articles from experts of the different subspecialties mentioned...
October 2016: Harefuah
https://www.readbyqxmd.com/read/28529992/minimally-invasive-surgery-for-gastric-cancer-in-usa-current-status-and-future-perspectives
#8
REVIEW
Ashley Russo, Vivian E Strong
The World Health Organization (WHO) has declared gastric carcinoma a global health concern and gastric cancer remains the third leading cause of cancer deaths worldwide. With the rising incidence of gastric cancer, a body of both retrospective and randomized data has emerged since the early 1990's evaluating the role of minimally invasive platforms in the management of gastric cancer. While Eastern studies have shown that the laparoscopic approach is safe and feasible for advanced gastric cancer in Eastern patients, it is not clear whether this is true for patients in the West...
2017: Translational Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28529973/high-affinity-mannotetraose-as-an-alternative-to-dextran-in-cona-based-fluorescent-affinity-glucose-assay-due-to-improved-fret-efficiency
#9
Andrea K Locke, Brian M Cummins, Gerard L Coté
Diabetes mellitus affects millions of people worldwide and requires that individuals tightly self-regulate their blood glucose levels to minimize the associated secondary complications. Continuous monitoring devices potentially offer patients a long-term means to tightly monitor their glucose levels. In recent years, fluorescent affinity sensors based on lectins (e.g., Concanavalin A (ConA)) have been implemented in such devices. Traditionally, these sensors pair the lectin with a multivalent ligand, like dextran, in order to develop a competitive binding assay that changes its fluorescent properties in response to the surrounding glucose concentrations...
May 27, 2016: ACS Sensors
https://www.readbyqxmd.com/read/28529680/-beyond-saving-lives-current-perspectives-of-interventional-radiology-in-trauma
#10
REVIEW
Anuradha Singh, Atin Kumar, Pawan Kumar, Subodh Kumar, Shivanand Gamanagatti
Interventional radiology (IR) has become an integral part in the management of traumatic injuries. There is an ever-increasing role of IR in traumatic injuries of solid abdominal organs, pelvic and peripheral arteries to control active bleeding by therapeutic embolization or vascular reconstruction using stent grafts. Traditionally, these endovascular treatments have been offered to hemodynamically stable patients. However, in recent times endovascular approach has become preferable to surgery even in hemodynamically unstable patients with injury of surgically difficult-to-access sites...
April 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28529451/role-of-epigenetics-in-uveal-melanoma
#11
REVIEW
Yongyun Li, Renbing Jia, Shengfang Ge
Uveal melanoma (UM) is a severe human malignancy with a high mortality rate that demands continued research into new and alternative forms of prevention and treatment. The emerging field of epigenetics is beginning to unfold an era of contemporary approaches to reducing the risk and improving the clinical treatment of UM. Epigenetic changes have a high prevalence rate in cancer, are reversible in nature, and can lead to cancer characteristics even in mutation-free cells. The information contained in this review highlights and expands on the main mechanisms of epigenetic dysregulation in UM tumorigenesis, progression and metastasis, including microRNA expression, hypermethylation of genes and histone modification...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/28529228/-the-absence-doubled-photo-poetic-narratives-of-prophylactic-mastectomy
#12
Stella Bolaki
This essay considers Clare Best's poetic sequence Self-portrait without Breasts (2011) and her collaboration with photographer Laura Stevens, which explore preventive surgery and questions of genetics/hereditary breast cancer. In an era when risk and cosmetic reconstruction guide treatment and the development of new breast cancer subjects, Best reclaims the "flat simple scarred chest with no extras." I situate her poems in the context of statistics and the neoliberal postfeminist subject as well as in a poetic tradition about the post-mastectomy body as landscape...
2017: Literature and Medicine
https://www.readbyqxmd.com/read/28528799/a-multifactorial-obesity-model-developed-from-nationwide-public-health-exposome-data-and-modern-computational-analyses
#13
LisaAnn S Gittner, Barbara J Kilbourne, Ravi Vadapalli, Hafiz M K Khan, Michael A Langston
STATEMENT OF THE PROBLEM: Obesity is both multifactorial and multimodal, making it difficult to identify, unravel and distinguish causative and contributing factors. The lack of a clear model of aetiology hampers the design and evaluation of interventions to prevent and reduce obesity. METHODS: Using modern graph-theoretical algorithms, we are able to coalesce and analyse thousands of inter-dependent variables and interpret their putative relationships to obesity...
May 18, 2017: Obesity Research & Clinical Practice
https://www.readbyqxmd.com/read/28528114/postoperative-outcomes-of-two-and-three-dimensional-planning-in-orthognathic-surgery-a-comparative-study
#14
Ting-Yu Wu, Hsiu-Hsia Lin, Lun-Jou Lo, Cheng-Ting Ho
OBJECTIVE: Compared with conventional two-dimensional (2D) planning, three-dimensional (3D) planning in orthognathic surgery yields more accurate anatomical information and enables the precise positioning of maxillary and mandibular segments, particularly for patients with facial asymmetry. Accordingly, surgical outcomes achieved using 3D planning should be superior. This study determined the differences between the 2D and 3D planning techniques by comparing their surgical outcomes. MATERIALS AND METHODS: In this retrospective study, patients who underwent surgery following the traditional 2D planning technique were classified into the 2D planning group...
April 23, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28528021/multicystic-peritoneal-mesothelioma-a-short-review
#15
Chi-Hao Zhang, Ji-Wei Yu, Meng Luo
Multicystic peritoneal mesothelioma (MCPM) is a rare neoplasm, predominantly affecting female patients during their reproductive years. The lesion is usually distributed diffusely in the abdomen and pelvis, but the peritoneum of the pelvic organs is the most common site. MCPM is composed of fluid-filled translucent cysts, connected by varying amounts of fibrous tissue, and lined by a layer of mesothelial cells. Because of the rarity of this disease, the pathogenesis and natural history of MCPM remain poorly understood and continuously debated...
March 31, 2017: Current Problems in Cancer
https://www.readbyqxmd.com/read/28527809/accuracy-of-genomic-predictions-in-gyr-bos-indicus-dairy-cattle
#16
S A Boison, A T H Utsunomiya, D J A Santos, H H R Neves, R Carvalheiro, G Mészáros, Y T Utsunomiya, A S do Carmo, R S Verneque, M A Machado, J C C Panetto, J F Garcia, J Sölkner, M V G B da Silva
Genomic selection may accelerate genetic progress in breeding programs of indicine breeds when compared with traditional selection methods. We present results of genomic predictions in Gyr (Bos indicus) dairy cattle of Brazil for milk yield (MY), fat yield (FY), protein yield (PY), and age at first calving using information from bulls and cows. Four different single nucleotide polymorphism (SNP) chips were studied. Additionally, the effect of the use of imputed data on genomic prediction accuracy was studied...
May 17, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28527750/estimating-serum-concentrations-of-dioxin-like-compounds-in-the-u-s-population-effective-2005-2006-and-2007-2008-a-multiple-imputation-and-trending-approach-incorporating-nhanes-pooled-sample-data
#17
Anne Bichteler, Daniele S Wikoff, Francis Loko, Mark A Harris
Dioxin-like compounds (DLCs) are monitored in the U.S. population using data collected with the National Health and Nutrition Examination Survey (NHANES). Until recently, participants' serum samples have been analyzed individually, and summary statistics defining reference ranges by age, gender, and race/ethnicity have served as the background by which other biomonitoring data can be evaluated. In the most recent NHANES DLC data, 2005-2006 and 2007-2008, participants' sera have been physically pooled prior to laboratory analysis, introducing major challenges to their utility as a reference population: variability among individuals and relations with covariates are lost, and individual design effects cannot be applied...
May 18, 2017: Environment International
https://www.readbyqxmd.com/read/28527635/shared-decision-making-in-preventive-care-in-switzerland-from-theory-to-action
#18
Kevin Selby, Reto Auer, Jacques Cornuz
Switzerland with its decentralized, liberal health system and its tradition of direct democracy may be an ideal place for shared decision making (SDM) to take root organically, rather than using top-down regulations seen in other countries. There are now multiple directives and programmes in place to encourage SDM, with the creation of several decision aids and specific training programs in the five Swiss medical schools. There has been an emphasis on preventive care, with the integration of patient preference into an organized colorectal cancer screening program, clear recommendations for prostate cancer screening, and inroads into the primary prevention of cardiovascular disease...
May 17, 2017: Zeitschrift Für Evidenz, Fortbildung und Qualität Im Gesundheitswesen
https://www.readbyqxmd.com/read/28527520/recent-advances-in-smart-biotechnology-hydrogels-and-nanocarriers-for-tailored-bioactive-molecules-depot
#19
REVIEW
Gesmi Milcovich, Stefania Lettieri, Filipe E Antunes, Bruno Medronho, Ana C Fonseca, Jorge F J Coelho, Paolo Marizza, Francesca Perrone, Rossella Farra, Barbara Dapas, Gabriele Grassi, Mario Grassi, Silvia Giordani
Over the past ten years, the global biopharmaceutical market has remarkably grown, with ten over the top twenty worldwide high performance medical treatment sales being biologics. Thus, biotech R&D (research and development) sector is becoming a key leading branch, with expanding revenues. Biotechnology offers considerable advantages compared to traditional therapeutic approaches, such as reducing side effects, specific treatments, higher patient compliance and therefore more effective treatments leading to lower healthcare costs...
May 9, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28527481/rethinking-anatomy-how-to-overcome-challenges-of-medical-education-s-evolution
#20
REVIEW
Bruno Guimarães, Luís Dourado, Stanislav Tsisar, José Miguel Diniz, Maria Dulce Madeira, Maria Amélia Ferreira
INTRODUCTION: Due to scientific and technological development, Medical Education has been readjusting its focus and strategies. Medical curriculum has been adopting a vertical integration model, in which basic and clinical sciences coexist during medical instruction. This context favours the introduction of new complementary technology-based pedagogical approaches. Thus, even traditional core sciences of medical curriculum, like Anatomy, are refocusing their teaching/learning paradigm...
February 27, 2017: Acta Médica Portuguesa
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