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https://www.readbyqxmd.com/read/28220819/the-cutoff-value-of-ossification-of-posterior-longitudinal-ligament-opll-for-early-diagnosis-of-myelopathy-using-somatosensory-evoked-potential-in-cervical-opll-patients
#1
S Y Yoon, T H Park, N L Eun, Y G Park
STUDY DESIGN: Retrospective study. OBJECTIVES: The objective of this study was to find out whether ossification of posterior longitudinal ligament (OPLL) characteristics, including size, shape and subtype, can be used to diagnose myelopathy using somatosensory evoked potential (SEP) in cervical OPLL patients. SETTING: Yonsei University College of Medicine, Seoul, Korea. METHODS: We retrospectively reviewed the medical records of 153 cervical OPLL patients who underwent SEP study...
February 21, 2017: Spinal Cord
https://www.readbyqxmd.com/read/28208390/geometry-and-design-of-origami-bellows-with-tunable-response
#2
Austin Reid, Frederic Lechenault, Sergio Rica, Mokhtar Adda-Bedia
Origami folded cylinders (origami bellows) have found increasingly sophisticated applications in space flight and medicine. In spite of this interest, a general understanding of the mechanics of an origami folded cylinder has been elusive. With a newly developed set of geometrical tools, we have found an analytic solution for all possible cylindrical rigid-face states of both Miura-ori and triangular tessellations. Although an idealized bellows in both of these families may have two allowed rigid-face configurations over a well-defined region, the corresponding physical device, limited by nonzero material thickness and forced to balance hinge and plate-bending energy, often cannot stably maintain a stowed configuration...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28198206/nitraria-retusa-fruit-prevents-penconazole-induced-kidney-injury-in-adult-rats-through-modulation-of-oxidative-stress-and-histopathological-changes
#3
Mariem Chaâbane, Mohamed Koubaa, Nejla Soudani, Awatef Elwej, Malek Grati, Kamel Jamoussi, Tahia Boudawara, Semia Ellouze Chaabouni, Najiba Zeghal
CONTEXT: Nitraria retusa (Forssk.) Asch. (Nitrariaceae) is a medicinal plant which produces edible fruits whose antioxidant activity has been demonstrated. OBJECTIVE: The current study elucidates the potential protective effect of N. retusa fruit aqueous extract against nephrotoxicity induced by penconazole, a triazole fungicide, in the kidney of adult rats. MATERIALS AND METHODS: Adult Wistar rats were exposed either to penconazole (67 mg/kg body weight), or to N...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28196948/medical-students-opportunities-to-participate-and-learn-from-activities-at-an-internal-medicine-ward-an-ethnographic-study
#4
A Hägg-Martinell, H Hult, P Henriksson, A Kiessling
OBJECTIVES: To optimise medical students' early clerkship is a complex task since it is conducted in a context primarily organised to take care of patients. Previous studies have explored medical students' perceptions of facilitation and hindrance of learning. However, the opportunities for medical student to learn within the culture of acute medicine care have not been fully investigated. This study aimed to explore how medical students approach, interact and socialise in an acute internal medicine ward context, and how spaces for learning are created and used in such a culture...
February 14, 2017: BMJ Open
https://www.readbyqxmd.com/read/28195724/a-drug-of-such-damned-nature-challenges-and-opportunities-in-translational-platinum-drug-research
#5
Dorian M Cheff, Matthew D Hall
The platinum-based anti-cancer agents cisplatin, carboplatin and oxaliplatin, represent a spectacular translational science achievement. The basic research observations that led to the discovery of Pt complexes as DNA-binding agents that elicit cell arrest, the pre-clinical tumor regression studies, and the inorganic medicinal chemistry that led to clinical implementation of effective platinum complexes in the clinic, have fueled multi-disciplinary research into platinum-based drugs. While the successes are clear and the research activity continues, a significant window of time has passed since a new Pt drug has been approved for clinical use...
February 14, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28194689/exploring-physician-perspectives-of-residency-holdover-handoffs-a-qualitative-study-to-understand-an-increasingly-important-type-of-handoff
#6
Jonathan A Duong, Trevor P Jensen, Sasha Morduchowicz, Michelle Mourad, James D Harrison, Sumant R Ranji
BACKGROUND: The term "holdover admissions" refers to patients admitted by an overnight physician and whose care is then transferred to a new primary team the next morning. Descriptions of the holdover process in internal medicine are sparse. OBJECTIVE: To identify important factors affecting the quality of holdover handoffs at an internal medicine (IM) residency program and to compare them to previously identified factors for other handoffs. DESIGN: We undertook a qualitative study using structured focus groups and interviews...
February 13, 2017: Journal of General Internal Medicine
https://www.readbyqxmd.com/read/28193377/another-time-another-space-the-evolution-of-the-virtual-journal-club
#7
REVIEW
Alison L Chetlen, Carol M Dell, Agnieszka O Solberg, Hansel J Otero, Kirsteen R Burton, Matthew T Heller, Nikita Lakomkin, Stephane L Desouches, Stacy E Smith
Virtual journal clubs (VJCs) provide a standardized, easily accessible forum for evidence-based discussion. The new virtual reality setting in which journal clubs and other online education events now take place offers great advantages and new opportunities for radiologists in academic medicine and private practice. VJCs continue to evolve, largely due to many emerging technologies and platforms. VJCs will continue to play an increasingly important role in medical education, interdisciplinary interaction, and multi-institutional collaboration...
March 2017: Academic Radiology
https://www.readbyqxmd.com/read/28192262/intra-operative-ultrasonography-for-definition-of-less-invasive-surgical-technique-in-patients-with-chiari-type-i-malformation
#8
Roger Schmidt Brock, Mario Augusto Taricco, Matheus Fernandes de Oliveira, Marcelo de Lima Oliveira, Manoel Jacobsen Teixeira, Edson Bor-Seng-Shu
INTRODUCTION: Chiari malformation Type I (CM) is the main congenital malformation disease of the craniovertebral junction. The ideal surgical treatment is still controversial. Invasive procedures inside CSF space and associated with dural repair are considered the gold standard, however a less invasive surgery with isolated bone decompression without dural opening may be possible in selected patients.. Our study evaluates the efficacy of intra-operative CSF flow measurement with ultrasonography (USG) as a determining parameter in the selection of these patients...
February 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28185433/model-based-iterative-reconstruction-for-single-shot-epi-at-7t
#9
Uten Yarach, Myung-Ho In, Itthi Chatnuntawech, Berkin Bilgic, Frank Godenschweger, Hendrik Mattern, Alessandro Sciarra, Oliver Speck
PURPOSE: To describe a model-based reconstruction strategy for single-shot echo planar imaging (EPI) that intrinsically accounts for k-space nonuniformity, Nyquist ghosting, and geometric distortions during rather than before or after image reconstruction. METHODS: Ramp sampling and inhomogeneous B0 field-induced distortion cause the EPI samples to lie on a non-Cartesian grid, thus requiring the nonuniform fast Fourier transform. Additionally, a 2D Nyquist ghost phase correction without the need for extra navigator acquisition is included in the proposed reconstruction...
February 10, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28182485/-wolves-canis-lupus-and-dogs-canis-familiaris-differ-in-following-human-gaze-into-distant-space-but-respond-similar-to-their-packmates-gaze-correction-to-werhahn-et-al-2016
#10
(no author information available yet)
Reports an error in "Wolves (Canis lupus) and dogs (Canis familiaris) differ in following human gaze into distant space but respond similar to their packmates' gaze" by Geraldine Werhahn, Zsófia Virányi, Gabriela Barrera, Andrea Sommese and Friederike Range (Journal of Comparative Psychology, 2016[Aug], Vol 130[3], 288-298). In the article, the affiliations for the second and fifth authors should be Wolf Science Center, Ernstbrunn, Austria, and Comparative Cognition, Messerli Research Institute, University of Veterinary Medicine Vienna/ Medical University of Vienna/University of Vienna...
February 2017: Journal of Comparative Psychology
https://www.readbyqxmd.com/read/28173930/methodology-for-astronaut-reconditioning-research
#11
David J Beard, Jonathan A Cook
Space medicine offers some unique challenges, especially in terms of research methodology. A specific challenge for astronaut reconditioning involves identification of what aspects of terrestrial research methodology hold and which require modification. This paper reviews this area and presents appropriate solutions where possible. It is concluded that spaceflight rehabilitation research should remain question/problem driven and is broadly similar to the terrestrial equivalent on small populations, such as rare diseases and various sports...
January 2017: Musculoskelet Sci Pract
https://www.readbyqxmd.com/read/28168617/an-anatomical-study-of-pneumatized-crista-galli
#12
Ranko Mladina, Romano Antunović, Cemal Cingi, Nuray Bayar Muluk, Neven Skitarelić, Mislav Malić
The literature data on the incidence of pneumatization of the crista galli based on patients' computed tomography (CT) scans ranges from 3 to 37.5%. This study investigated for the first time the incidence of crista galli pneumatization based on CT scans of human skulls. The study examined 102 randomly selected human skulls (≥20 years of age; 76 males, 26 females). Skulls were scanned in a fixed position using cone beam computed tomography (CBCT) with a field of view of 145 × 130 mm and an isotropic voxel size of 0...
February 6, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28166733/a-machine-learning-classifier-trained-on-cancer-transcriptomes-detects-nf1-inactivation-signal-in-glioblastoma
#13
Gregory P Way, Robert J Allaway, Stephanie J Bouley, Camilo E Fadul, Yolanda Sanchez, Casey S Greene
BACKGROUND: We have identified molecules that exhibit synthetic lethality in cells with loss of the neurofibromin 1 (NF1) tumor suppressor gene. However, recognizing tumors that have inactivation of the NF1 tumor suppressor function is challenging because the loss may occur via mechanisms that do not involve mutation of the genomic locus. Degradation of the NF1 protein, independent of NF1 mutation status, phenocopies inactivating mutations to drive tumors in human glioma cell lines. NF1 inactivation may alter the transcriptional landscape of a tumor and allow a machine learning classifier to detect which tumors will benefit from synthetic lethal molecules...
February 6, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28163790/hypertrophy-changes-3d-shape-of-hipsc-cardiomyocytes-implications-for-cellular-maturation-in-regenerative-medicine
#14
Cassady E Rupert, Heidi H Chang, Kareen L K Coulombe
Advances in the use of human induced pluripotent stem cell (hiPSC)-derived cardiomyocytes for heart regeneration and in vitro disease models demand a greater understanding of how these cells grow and mature in 3-dimensional space. In this study, we developed an analysis methodology of single cardiomyocytes plated on 2D surfaces to assess their 3D myofilament volume and its z-height distribution, or shape, upon hypertrophic stimulation via phenylephrine (PE) treatment or long-term culture ("aging"). Cardiomyocytes were fixed and labeled with α-actinin for confocal microscopy imaging to obtain z-stacks for 3D myofilament volume analysis...
February 2017: Cellular and Molecular Bioengineering
https://www.readbyqxmd.com/read/28160764/vaccination-attitudes-and-practices-of-integrative-medicine-physicians
#15
Laura Jean Buehning, Kenneth Michael Peddecord
Context • The growth of Internet-based information and social networking has increased the accessibility and importance of antivaccine information. That information has led to a questioning of vaccination schedules and policies by many individuals. Although the attitudes of complementary and alternative practitioners, such as homeopaths and chiropractic students, toward vaccination have been assessed, despite the growth of integrative medicine, no assessment of the attitudes and practices regarding vaccination of these physicians has been performed...
January 2017: Alternative Therapies in Health and Medicine
https://www.readbyqxmd.com/read/28154920/high-grade-serous-ovarian-cancer-the-clone-wars
#16
REVIEW
Aleksander Salomon-Perzyński, Magdalena Salomon-Perzyńska, Bogdan Michalski, Violetta Skrzypulec-Plinta
BACKGROUND: The last 5 years' studies using next-generation sequencing provided evidences that many types of solid tumors present spatial and temporal genetic heterogeneity and are composed of multiple populations of genetically distinct subclones that evolve over time following a pattern of branched evolution. The evolutionary nature of cancer has been proposed as the major contributor to drug resistance and treatment failure. In this review, we present the current state of knowledge about the clonal evolution of high-grade serous ovarian cancer and discuss the challenge that clonal evolution poses for efforts to achieve an optimal cancer control...
February 3, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/28151789/creating-a-sacred-space-in-the-intensive-care-unit-at-the-end-of-life
#17
Ann L Fournier
Improving care at the end of life is a health priority. At least one-third of deaths in the United States occur in the hospital; nearly half of the Americans who die in the hospital will have spent time in the intensive care unit during the last 3 days of life. Critically ill patients and their families identify significant unmet spiritual, environmental, and communication needs. Although the Society of Critical Care Medicine recommends that the spiritual needs of critically ill patients be addressed by the health care team and be incorporated in patients' plans of care, spiritual concerns are infrequently addressed during goals-of-care discussions...
March 2017: Dimensions of Critical Care Nursing: DCCN
https://www.readbyqxmd.com/read/28150380/three-dimensional-assessment-of-condylar-position-and-joint-spaces-after-maxillary-first-premolar-extraction-in-skeletal-class-ii-malocclusion
#18
M S Alhammadi, M S Fayed, A Labib
OBJECTIVES: This study sought to investigate the three-dimensional (3D) changes in anteroposterior, vertical and mediolateral positions and orientations of the mandibular condyle as well as joint space parameters following maxillary first premolar extraction and incisor retraction in skeletal Class II patients. SETTING AND SAMPLE POPULATION: Thirty patients were treated by orthodontic maxillary first premolar extraction at the Faculty of Oral and Dental Medicine, Cairo University, Egypt...
February 1, 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28140573/strain-release-heteroatom-functionalization-development-scope-and-stereospecificity
#19
Justin M Lopchuk, Kasper Fjelbye, Yu Kawamata, Lara R Malins, Chung-Mao Pan, Ryan Gianatassio, Jie Wang, Liher Prieto, James Bradow, Thomas A Brandt, Michael R Collins, Jeff Elleraas, Jason Ewanicki, William Farrell, Olugbeminiyi O Fadeyi, Gary M Gallego, James J Mousseau, Robert Oliver, Neal W Sach, Jason K Smith, Jillian E Spangler, Huichin Zhu, Jinjiang Zhu, Phil S Baran
Driven by the ever-increasing pace of drug discovery and the need to push the boundaries of unexplored chemical space, medicinal chemists are routinely turning to unusual strained bioisosteres such as bicyclo[1.1.1]pentane, azetidine, and cyclobutane to modify their lead compounds. Too often, however, the difficulty of installing these fragments surpasses the challenges posed even by the construction of the parent drug scaffold. This full account describes the development and application of a general strategy where spring-loaded, strained C-C and C-N bonds react with amines to allow for the "any-stage" installation of small, strained ring systems...
February 20, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28134023/effects-of-ionizing-radiation-on-dna-methylation-from-experimental-biology-to-clinical-applications
#20
Isabelle R Miousse, Kristy R Kutanzi, Igor Koturbash
PURPOSE: Ionizing radiation (IR) is a ubiquitous environmental stressor with genotoxic and epigenotoxic capabilities. Terrestrial IR, predominantly a low-linear energy transfer (LET) radiation, is being widely utilized in medicine, as well as in multiple industrial applications. Additionally, an interest in understanding the effects of high-LET irradiation is emerging due to the potential of exposure during space missions and the growing utilization of LET radiation in medicine. CONCLUSIONS: In this review, we summarize the current knowledge of the effects of IR on DNA methylation, a key epigenetic mechanism regulating the expression of genetic information...
January 30, 2017: International Journal of Radiation Biology
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