keyword
MENU ▼
Read by QxMD icon Read
search

Transverse patterning

keyword
https://www.readbyqxmd.com/read/28543952/structural-signature-of-classical-versus-late-onset-friedreich-s-ataxia-by-multimodality-brain-mri
#1
Thiago Junqueira R Rezende, Alberto Rolim M Martinez, Ingrid Faber, Karen Girotto, José Luiz Pedroso, Orlando G Barsottini, Iscia Lopes-Cendes, Fernando Cendes, Andreia V Faria, Marcondes C França
INTRODUCTION: Friedreich's ataxia (FRDA) is the most common autosomal-recessive ataxia worldwide. It is characterized by early onset, sensory abnormalities, and slowly progressive ataxia. However, some individuals manifest the disease after the age of 25 years and are classified as late-onset FRDA (LOFA). Therefore, we propose a transversal multimodal MRI-based study to investigate which anatomical substrates are involved in classical (cFRDA) and LOFA. METHODS: We enrolled 36 patients (13 with LOFA) and 29 healthy controls...
May 23, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28542916/spatial-rearrangement-of-purkinje-cell-subsets-forms-the-transverse-and-longitudinal-compartmentalization-in-the-mouse-embryonic-cerebellum
#2
Suteera Vibulyaseck, Hirofumi Fujita, Yuanjun Luo, Anh Khoa Tran, Arata Oh-Nishi, Yuichi Ono, Shinji Hirano, Izumi Sugihara
Transversely-oriented lobules and longitudinally-arrayed stripes of Purkinje cell subsets subdivide the cerebellar cortex into multiple compartments that are involved in diverse functions. In the mammalian cerebellum, anterior and posterior lobules, which are involved in somatosensorimotor function, show an alternation of aldolase C (zebrin II) -positive and -negative stripes, whereas the central lobules (lobules VIb-VII and crus I), which are implicated in non-motor functions, show a laterally-expanded arrangement solely of aldolase C-positive stripes...
May 24, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28542553/quantitative-mri-for-analysis-of-peritumoral-edema-in-malignant-gliomas
#3
Ida Blystad, J B Marcel Warntjes, Örjan Smedby, Peter Lundberg, Elna-Marie Larsson, Anders Tisell
BACKGROUND AND PURPOSE: Damage to the blood-brain barrier with subsequent contrast enhancement is a hallmark of glioblastoma. Non-enhancing tumor invasion into the peritumoral edema is, however, not usually visible on conventional magnetic resonance imaging. New quantitative techniques using relaxometry offer additional information about tissue properties. The aim of this study was to evaluate longitudinal relaxation R1, transverse relaxation R2, and proton density in the peritumoral edema in a group of patients with malignant glioma before surgery to assess whether relaxometry can detect changes not visible on conventional images...
2017: PloS One
https://www.readbyqxmd.com/read/28529049/heterogeneity-of-transverse-axial-tubule-system-in-mouse-atria-remodeling-in-atrial-specific-na-ca-2-exchanger-knockout-mice
#4
Xin Yue, Rui Zhang, Brian Kim, Aiqun Ma, Kenneth D Philipson, Joshua I Goldhaber
Transverse-axial tubules (TATs) are commonly assumed to be sparse or absent in atrial myocytes from small animals. Atrial myocytes from rats, cats and rabbits lack TATs, which results in a characteristic "V"-shaped Ca release pattern in confocal line-scan recordings due to the delayed rise of Ca in the center of the cell. To examine TAT expression in isolated mouse atrial myocytes, we loaded them with the membrane dye Di-4-ANEPPS to label TATs. We found that >80% of atrial myocytes had identifiable TATs...
May 18, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28527844/evaluation-of-various-pretreatments-to-fiber-post-on-the-push-out-bond-strength-of-root-canal-dentin
#5
Ömer Kırmalı, Özlem Üstün, Alper Kapdan, Alper Kuştarcı
INTRODUCTION: The aim of this in vitro study was to compare the effect of different pretreatments (fiber post) with the laser-activated irrigation (LAI) technique (for removal of the smear layer) on root canal dentin in terms of push-out bond strength (PBS) in a fiber post. METHODS: Fifty freshly extracted mandibular single-rooted premolars were prepared, and LAI was applied to all roots (17% EDTA was 5 mL for 120 seconds with an erbium, chromium:yttrium-scandium-gallium-garnet laser [0...
May 17, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28522235/a-review-of-terrestrial-aerial-and-aquatic-keratins-the-structure-and-mechanical-properties-of-pangolin-scales-feather-shafts-and-baleen-plates
#6
Bin Wang, Tarah N Sullivan
Keratinous materials, omnipresent as the hard and durable epidermal appendages of animals, are one of the toughest biological materials. They exhibit diverse morphologies and structures that serve a variety of amazing and inspiring mechanical functions. In this work, we provide a review of representative terrestrial, aerial and aquatic keratinous materials, pangolin scales, feather shafts and baleen plates, and correlate their hierarchical structures to respective functions of dermal armor, flight material and undersea filter...
May 8, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28521518/3d-characterisation-of-the-dynamics-of-foot-joints-of-adults-during-walking-gait-pattern-identification
#7
E Sanchis-Sales, J L Sancho-Bru, A Roda-Sales, J Pascual-Huerta
A detailed description of the kinematics and kinetics of the ankle, midtarsal and metatarsophalangeal joints of the feet of a healthy adult male population during barefoot walking is provided. Plots of the angles and moments in each plane during the stance phase are reported, along with the mean and standard deviation values of 87 different parameters that characterise the 3D dynamics of the foot joints. These parameters were used to check for similarities between subjects through a hierarchical analysis that allowed three different gait patterns to be identified, most of the differences corresponding to the frontal and transverse planes...
May 19, 2017: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/28512795/influence-of-primary-site-on-metastatic-distribution-and-survival-in-stage-iv-colorectal-cancer
#8
Arul E Suthananthan, Mayank Bhandari, Cameron Platell
BACKGROUND: To assess pattern distribution and prognosis of the three anatomical entities of metastatic colorectal cancer, and influence of treatment of metastases on survival. METHODS: Patients presenting with stage IV colorectal cancer (synchronous group), or who developed metastatic recurrence (metachronous group) after initial curative treatment between January 2005 and August 2015 were reviewed. Right sided (cecum to transverse colon), left sided (splenic flexure to sigmoid colon) and rectal cancers were identified...
May 16, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28509338/investigation-of-the-ischioanal-fossa-application-to-abscess-spread
#9
Jian-Fei Zhang, Mei-Ling Du, Hong-Jin Sui, Yong Yang, Huan-Yu Zhou, Chao Meng, Mei-Jing Qu, Qian Zhang, Bin Du, Yuan-Shan Fu
The location of perianal abscesses and the course of the fistula follow certain patterns, especially in the relationship between external and internal openings. However, it is still not clear how the contents of the ischioanal fossa, especially the fibrous network of fat tissue, affect the route for such diseases. Ten male adult cadavers were selected for the study. Seven horizontal transverse section planes from 1cm above the pubic symphysis to the inferior border of the lesser trochanter of the femur were recorded after P45 sheet plastination...
May 16, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28508915/avoiding-the-invasion-of-h2o-into-y2mo3o12-by-coating-with-c3n4-to-improve-negative-thermal-expansion-properties
#10
Xiansheng Liu, Baohe Yuan, Yongguang Cheng, Xianghong Ge, Erjun Liang, Weifeng Zhang
The hygroscopicity of Y2Mo3O12 has serious influences on its mechanic and negative thermal expansion (NTE) properties. The reported partial ion substitution for Y(3+) in Y2Mo3O12 could reduce the hygroscopicity, however, the expected NTE properties disappear disappointedly. In this investigation, it is found that avoiding the invasion of crystal water and extending the NTE temperature range of Y2Mo3O12 to room temperature could be realized together by heating with CO(NH2)2. The X-ray diffraction patterns, infrared absorption spectra, scanning electron microscopy images and X-ray photoelectron spectra suggest the formation of small hydrophobic molecules (C3N4, C, etc...
May 16, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28498518/geophysical-investigation-of-fresh-saline-water-interface-a-case-study-from-south-punjab-pakistan
#11
Muhammad Hasan, Yanjun Shang, Gulraiz Akhter, Majid Khan
The importance of the study of fresh-saline water incursion cannot be over-emphasized. Borehole techniques have been widely used, but they are quite expensive, intrusive, and time consuming. The electrical resistivity method has proved very successful in groundwater assessment. This advanced technique uses the calculation of Dar-Zarrouk (D-Z) parameters, namely longitudinal unit conductance, transverse unit resistance, and longitudinal resistivity has been employed by using 50 vertical electrical sounding points to assess the groundwater and delineate the fresh-saline water interface over 1045 km(2) area of Khanewal in Southern Punjab of Pakistan...
May 12, 2017: Ground Water
https://www.readbyqxmd.com/read/28486163/morphology-morphogenesis-and-molecular-phylogeny-of-pleurotricha-oligocirrata-nov-spec-ciliophora-spirotrichea-stylonychinae
#12
Mi-Hyun Park, Ji Hye Moon, Ki Nam Kim, Jae-Ho Jung
Pleurotricha oligocirrata nov. spec. was discovered in samples collected from a freshwater wetland in Korea and is described here based on its morphology, morphogenesis, and the nucleotide sequence of its nuclear small subunit ribosomal rRNA (SSU rRNA) gene. In its genus, P. oligocirrata is the only species that possesses one right marginal cirral row. The morphology of P. oligocirrata is as follows: body size 98-148×47-72μm in protargol preparations, colourless and rigid body; contractile vacuole anterior of mid-body near left margin; cortical granules lacking; two macronuclear nodules with two micronuclei; undulating membranes in Oxytricha pattern; 50-62 adoral membranelles, 23-27 frontal-ventral-transverse cirri, one left and one right marginal cirral row; six or seven dorsal kineties, including dorsomarginal rows, with three caudal cirri...
April 17, 2017: European Journal of Protistology
https://www.readbyqxmd.com/read/28480411/pharmacognostic-standardization-of-the-leaf-of-melaleuca-alternifolia-maiden-betche-cheel
#13
Gagan Shah, Uttam Singh Baghel
BACKGROUND: Melaleuca alternifolia (Myrtaceae) is a well-known, commonly used, tall shrub plant in Ayurvedic medicine. Traditionally, it is used for its antimicrobial potential to treat cutaneous infections. No attempts have been made regarding pharmacognostic investigation of the plant till date. So, the present study was aimed to establish standards with the help of different pharmacognostic parameters. METHODS: Various pharmacognostic parameters (morphological, microscopic, physicochemical evaluations and preliminary phytochemical screening) were studied along with fluorescent and thin layer chromatographic analysis of the extract...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/28468164/effects-of-surgical-and-nonsurgical-rapid-maxillary-expansion-on-palatal-structures
#14
Gökmen Kurt, Ayşe Tuba Altuğ, Gökhan Türker, Banu Kiliç, Erdem Kiliç, Alper Alkan
AIM: The aim of the present study was to compare the effects of surgical and nonsurgical rapid maxillary expansion (RME) in skeletally mature patients. MATERIALS AND METHODS: Surgically assisted rapid maxillary expansion (SARME) was used in 18 patients (2 males, 16 females) with a mean age of 19.90 years. Two nonsurgical RME groups were constructed to compare the expansion changes of SARME. Eighteen patients in maximum pubertal peak (12 males, 6 females) with a mean age of 13...
May 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28464688/variability-in-muscle-activation-of-simple-speech-motions-a-biomechanical-modeling-approach
#15
Negar M Harandi, Jonghye Woo, Maureen Stone, Rafeef Abugharbieh, Sidney Fels
Biomechanical models of the oropharynx facilitate the study of speech function by providing information that cannot be directly derived from imaging data, such as internal muscle forces and muscle activation patterns. Such models, when constructed and simulated based on anatomy and motion captured from individual speakers, enable the exploration of inter-subject variability of speech biomechanics. These models also allow one to answer questions, such as whether speakers produce similar sounds using essentially the same motor patterns with subtle differences, or vastly different motor equivalent patterns...
April 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28463299/quasi-three-dimensional-particle-imaging-with-digital-holography
#16
Osku Kemppinen, Yuli Heinson, Matthew Berg
In this work, approximate three-dimensional structures of microparticles are generated with digital holography using an automated focus method. This is done by stacking a collection of silhouette-like images of a particle reconstructed from a single in-line hologram. The method enables estimation of the particle size in the longitudinal and transverse dimensions. Using the discrete dipole approximation, the method is tested computationally by simulating holograms for a variety of particles and attempting to reconstruct the known three-dimensional structure...
May 1, 2017: Applied Optics
https://www.readbyqxmd.com/read/28458472/plating-of-pilon-fractures-based-on-the-orientation-of-the-fibular-shaft-component-a-biomechanical-study-evaluating-plate-stiffness-in-a-cadaveric-fracture-model
#17
Gennadiy A Busel, J Tracy Watson
OBJECTIVES: To evaluate mechanically superior method of pilon fracture fixation by comparing axial stiffness between anterolateral and medial tibial locking plates in a cadaveric fracture model. METHODS: Eight matched pairs of fresh frozen cadaver specimens (lower limb after through-knee disarticulation) were used to eliminate confounder of bone quality. Simulated pilon fractures were created so that each pair represented either varus or valgus fracture pattern (AO 43-A2) with associated fibular fractures (transverse or comminuted)...
June 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28444089/patient-safety-knowledge-between-multiprofessional-residents
#18
João Lucas Campos de Oliveira, Simone Viana da Silva, Pamela Regina Dos Santos, Laura Misue Matsuda, Nelsi Salete Tonini, Anair Lazzari Nicola
Objective: To assess the knowledge of multiprofesional residents in health about the security of the patient theme. Methods: Cross-sectional study, quantitative, developed with graduate courses/residence specialties of health in a public university of Paraná, Brazil. Participants (n=78) answered a questionnaire containing nine objective questions related to patient safety. Data were analyzed using descriptive statistics, in proportion measures. The minimum 75% of correct answers was considered the cutoff for positive evaluation...
2017: Einstein
https://www.readbyqxmd.com/read/28437969/experimental-generation-of-complex-optical-fields-for-diffraction-limited-optical-focus-with-purely-transverse-spin-angular-momentum
#19
Jian Chen, Chenhao Wan, Lingjiang Kong, Qiwen Zhan
We demonstrate a method to generate complex optical fields at the pupil plane of a high numerical aperture (NA) objective lens for the creation of diffraction limited optical focus with purely transverse spin angular momentum. The complex optical fields are analytically deduced through reversing the radiated patterns from two electric dipoles, which are located at the focal point of the high NA lens and oscillate respectively in x- and z- directions with phase difference of π/2. The derived fields can be experimentally created with a vectorial optical field generator...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437333/correction-capability-in-the-3-anatomic-planes-of-different-pedicle-screw-designs-in-scoliosis-instrumentation
#20
Xiaoyu Wang, Carl-Eric Aubin, John Coleman, Jeremy Rawlinson
STUDY DESIGN: Computer simulations to compare the correction capabilities of different pedicle screws in adolescent idiopathic scoliosis (AIS) instrumentations. OBJECTIVE: To compare the correction and resulting bone-screw forces associated with different pedicle screws in scoliosis instrumentations. SUMMARY OF BACKGROUND DATA: Pedicle screw fixation is widely used in surgical instrumentation for spinal deformity treatment. Screw design, correction philosophies, and surgical techniques are constantly evolving to achieve better control of the vertebrae and correction of the spinal deformity...
May 2017: Clinical Spine Surgery
keyword
keyword
46584
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"