keyword
MENU ▼
Read by QxMD icon Read
search

DCT

keyword
https://www.readbyqxmd.com/read/27921133/-evaluation-of-correction-formulas-for-tonometry-the-goldmann-applanation-tonometry-in-approximation-to-dynamic-contour-tonometry
#1
J Wachtl, M Töteberg-Harms, S Frimmel, C Kniestedt
BACKGROUND: Accurate determination of intraocular pressure (IOP) is essential for correct management of glaucoma. Goldmann applanation tonometry (GAT) is the gold standard for measuring IOP despite its limitations due to its dependence on corneal properties. With the aim of improving the accuracy of GAT readings, several correction formulas have been developed. OBJECTIVE: The aim of this study was to investigate the accuracy and clinical relevance of five correction equations for GAT...
December 5, 2016: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/27918898/roles-of-l-type-calcium-channels-cav1-2-and-the-distal-c-terminus-dct-in-differentiation-and-mineralization-of-rat-dental-apical-papilla-stem-cells-rscaps
#2
Qianqian Gao, Jianping Ge, Yanqin Ju, Changsheng Li, Jian Gao, Meisheng Wu, Shouliang Zhao
OBJECTIVE: Voltage-gated inward Ca(2+) currents (ICa) are triggered by cell depolarization and commonly produce transient increases in the cytoplasmic free Ca(2+) concentration. The CaV1.2 distal C-terminus is susceptible to proteolytic cleavage, which yields a truncated CaV1.2 subunit and a cleaved C-terminal fragment (CCt or DCT). Stem cells from the apical papilla (SCAPs) has a capacity for differentiation into the odontoblastic-like cells in vitro and dentin forming in vivo, which makes SCAPs advantages in tissue engineering and regenerative endodontic...
November 4, 2016: Archives of Oral Biology
https://www.readbyqxmd.com/read/27906863/bartter-s-and-gitelman-s-syndrome
#3
Hannsjörg W Seyberth, Stefanie Weber, Martin Kömhoff
PURPOSE OF REVIEW: The clinical presentations of Bartter's syndrome and Gitelman's syndrome will be reviewed including two most recently described hypokalemic salt-losing tubulopathies. By taking the quite heterogeneous presentations and the apparently different pathophysiologies as the basis, the applicability of the physiologic classification has been tested. RECENT FINDINGS: According to the physiologic approach, salt-losing tubulopathies can be divided into two major groups (with completely different tubular defects): first, disorders of the thick ascending limb of Henle's loop (loop disorders); second, disorders of the distal convolute tubule (DCT disorders)...
November 30, 2016: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/27906816/intraocular-pressure-measurements-after-descemet-membrane-endothelial-keratoplasty
#4
Anna-Karina B Maier, Enken Gundlach, Milena Pahlitzsch, Johannes Gonnermann, Caitlin Corkhill, Eckart Bertelmann, Antonia M Joussen, Matthias K J Klamann, Necip Torun
PURPOSE: Intraocular pressure (IOP) elevation occurs regularly after Descemet membrane endothelial keratoplasty (DMEK). This study evaluated the effect of central corneal thickness (CCT) on the IOP after DMEK. PATIENTS AND METHODS: This prospective study recorded the IOP of 46 eyes from 46 patients preoperatively, and then 1 and 3 months after DMEK. IOP measurement was performed by noncontact pneumatic tonometry (NCT), iCare, Goldmann applanation tonometry (GAT), and dynamic contour tonometry (DCT)...
November 30, 2016: Journal of Glaucoma
https://www.readbyqxmd.com/read/27906810/a-comparative-analysis-of-goldmann-tonometry-correction
#5
Magdalena Asejczyk-Widlicka, Wieslaw Srodka, Barbara K Pierscionek
PURPOSE: The measurement of intraocular pressure (IOP) by Goldmann applanation tonometry (GAT) is based on assumptions about corneal parameters. To correct for variations in corneal curvature and thickness, a number of equations have been proposed. This study evaluates the in vivo accuracy of these equations from individuals with primary open-angle glaucoma and compared them with measurements taken using the Pascal dynamic contour tonometer (DCT), which makes no assumptions about the corneal geometry or biomechanics...
November 30, 2016: Journal of Glaucoma
https://www.readbyqxmd.com/read/27882820/phase-ii-randomized-study-of-the-igf-1r-pathway-modulator-axl1717-compared-to-docetaxel-in-patients-with-previously-treated-locally-advanced-or-metastatic-non-small-cell-lung-cancer
#6
Michael Bergqvist, Georg Holgersson, Igor Bondarenko, Elena Grechanaya, Alexey Maximovich, György Andor, Maria Klockare, Marcus Thureson, Markus Jerling, Johan Harmenberg
BACKGROUND: The primary objective of this study was to compare the progression-free survival (PFS) at 12 weeks between patients treated with IGF-1R pathway modulator AXL1717 (AXL) and patients treated with docetaxel (DCT). MATERIAL AND METHODS: The study was conducted at 19 study centers in five countries. A total of 99 patients with previously treated, locally advanced or metastatic non-small cell lung cancer (NSCLC) of the squamous cell carcinoma (SCC) or adenocarcinoma (AC) subtypes in need of additional treatment were randomized and treated with either 300 or 400 mg of AXL as daily BID treatment (58 patients) or DCT given as 75 mg/m(2) in three-week cycles (41 patients) as monotherapy in a 3:2 ratio for each NSCLC subtype...
November 24, 2016: Acta Oncologica
https://www.readbyqxmd.com/read/27859427/citrate-buffered-dialysis-solution-citrasate-allows-avoidance-of-anticoagulation-during-intermittent-hemodiafiltration-at-the-cost-of-decreased-performance-and-systemic-biocompatibility
#7
Pavlina Richtrova, Jan Mares, Lukas Kielberger, Ladislav Trefil, Jaromir Eiselt, Tomas Reischig
Reportedly, citrate-based dialysis solution enables heparin dose tapering or even complete exclusion, particularly in postdilution hemodiafiltration (HDF). The aim of the study was to verify this strategy in predilution setting and to assess its short-term safety, efficacy, and biocompatibility. Ten regular hemodialysis patients were assigned to predilution HDF on acetate- and citrate-based dialysis solutions (0.8 mmol/l trisodium citrate) at random order. Acetate HDF was performed using routine dose of heparin while citrate HDF was heparin free...
November 10, 2016: Artificial Organs
https://www.readbyqxmd.com/read/27857416/optical-multiple-image-encryption-in-diffractive-imaging-based-scheme-using-spectral-fusion-and-nonlinear-operation
#8
Yi Qin, Qiong Gong, Zhipeng Wang, Hongjuan Wang
We report a new method for multiple-image encryption in diffractive-imaging-based encryption (DIBE) scheme. The discrete cosine transformation (DCT) spectra of the primary images are extracted, compacted and then nonlinear-transformed before being sent to the DIBE, where they are encoded into a single intensity pattern. With the help of a suggested phase retrieval algorithm, the original images can be recovered with high quality. Furthermore, due to the introduction of the nonlinear operation, the proposal is demonstrated to be robust to the currently available cryptographic attacks...
November 14, 2016: Optics Express
https://www.readbyqxmd.com/read/27849534/random-walk-graph-laplacian-based-smoothness-prior-for-soft-decoding-of-jpeg-images
#9
Xianming Liu, Gene Cheung, Xiaolin Wu, Debin Zhao
Given the prevalence of JPEG compressed images, optimizing image reconstruction from the compressed format remains an important problem. Instead of simply reconstructing a pixel block from the centers of indexed DCT coefficient quantization bins (hard decoding), soft decoding reconstructs a block by selecting appropriate coefficient values within the indexed bins with the help of signal priors. The challenge thus lies in how to define suitable priors and apply them effectively. In this paper, we combine three image priors-Laplacian prior for DCT coefficients, sparsity prior and graph-signal smoothness prior for image patches-to construct an efficient JPEG soft decoding algorithm...
November 10, 2016: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/27845022/selection-of-cows-for-treatment-at-dry-off-on-organic-dairy-farms
#10
Klemens Kiesner, Nicole Wente, Otto Volling, Volker Krömker
Restrictions regarding the use of antibiotics make selective antibiotic dry cow therapy (DCT) mandatory on organic farms in Germany. This requires methods for identifying cows with an intramammary infection (IMI) at dry-off. The aim of this field study was to create a decision scheme for the use of DCT based on cow level factors associated with IMI at dry-off and the probability of both cure and new infection (NI) during the dry period. Data from 250 cows from five organic farms were collected including somatic cell counts (SCC) from Dairy Herd Improvement (DHI) records, California mastitis test (CMT) results at dry-off, clinical mastitis (CM) history, parity and dry-off treatment...
November 2016: Journal of Dairy Research
https://www.readbyqxmd.com/read/27832141/thyroid-hormones-regulate-zebrafish-melanogenesis-in-a-gender-specific-manner
#11
Raúl Guillot, Borja Muriach, Ana Rocha, Josep Rotllant, Robert N Kelsh, José Miguel Cerdá-Reverter
Zebrafish embryos are treated with anti-thyroidal compounds, such as phenylthiourea, to inhibit melanogenesis. However, the mechanism whereby the thyroidal system controls melanin synthesis has not been assessed in detail. In this work, we tested the effect of the administration of diets supplemented with T3 (500μg/g food) on the pigment pattern of adult zebrafish. Oral T3 induced a pronounced skin paling in both adult female and male zebrafish that was reversible upon cessation of treatment. The number of visible melanophores was significantly reduced in treated fish...
2016: PloS One
https://www.readbyqxmd.com/read/27831877/steerable-discrete-cosine-transform
#12
Giulia Fracastoro, Sophie M Fosson, Enrico Magli
In image compression, classical block-based separable transforms tend to be inefficient when image blocks contain arbitrarily shaped discontinuities. For this reason, transforms incorporating directional information are an appealing alternative. In this paper, we propose a new approach to this problem, namely, a discrete cosine transform (DCT) that can be steered in any chosen direction. Such transform, called steerable DCT (SDCT), allows to rotate in a flexible way pairs of basis vectors, and enables precise matching of directionality in each image block, achieving improved coding efficiency...
January 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/27829444/potential-molecular-characteristics-in-situ-in-response-to-repetitive-uvb-irradiation
#13
Wenqi Chen, Jinhai Zhang
BACKGROUND: To identify molecular characteristics in situ in response to repetitive UVB (ultraviolet-B) irradiation. METHODS: Microarray data from the Gene Expression Omnibus were re-analyzed to identify DEGs (differentially expressed genes) between UVB-irradiated and non-irradiated skin biopsies. Enrichment and annotation analyses were performed respectively using DAVID, and TSGene and TAG databases. PPIs (protein-protein interactions) were analyzed using STRING, and miRNAs (microRNAs) and TFs (transcription factors) were predicted separately by miRNA-related databases and ENCODE...
November 10, 2016: Diagnostic Pathology
https://www.readbyqxmd.com/read/27818928/effect-of-hydrogen-bond-formation-replacement-on-solubility-characteristics-gastric-permeation-and-pharmacokinetics-of-curcumin-by-application-of-powder-solution-technology
#14
Vijay Sharma, Kamla Pathak
The present research aimed to improve the dissolution rate and bioavailability of curcumin using the potential of liquisolid technology. Twelve drug-loaded liquisolid systems (LS-1 to LS-12) were prepared using different vehicles (PEG 200, PEG 400 and Tween 80) and curcumin concentrations in vehicle (40%, 50%, 60% and 70%, w/w). The carrier [microcrystalline cellulose (MCC) PH102] to coat (Aerosil(®)) ratio was 20 in all formulations. The systems were screened for pre-compression properties before being compressed to liquisolid tablets (LT-1 to LT-12)...
November 2016: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/27795301/additive-protection-against-congenital-cmv-conferred-by-combined-gb-pp65-vaccination-using-a-lymphocytic-choriomeningitis-virus-lcmv-vector
#15
Mark R Schleiss, Ursula Berka, Elizabeth Watson, Mario Aistleithner, Bettina Kiefmann, Bastien Mangeat, Elizabeth C Swanson, Peter A Gillis, Nelmary Hernandez-Alvarado, Claudia Fernández-Alarcón, Jason C Zabeli, Daniel D Pinschewer, Anders Lilja, Michael Schwendinger, Farshad Guirakhoo, Thomas P Monath, Klaus Orlinger
Subunit vaccines for prevention of congenital cytomegalovirus (CMV) infection based on glycoprotein B (gB) and pp65 are in clinical trials, but it is unclear whether simultaneous vaccination with both antigens enhances protection. We undertook evaluation of a novel bivalent vaccine based on non-replicating lymphocytic choriomeningitis virus (rLCMV) vectors expressing a cytoplasmic tail-deleted gB (gB(dCt)), and full-length pp65 from human CMV in mice. Immunization with the gB(dCt) vector alone elicited a comparable gB-binding antibody response, and a superior neutralizing response, to that elicited by adjuvanted subunit gB...
October 26, 2016: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/27780633/estrogen-variation-during-the-menstrual-cycle-does-not-influence-left-ventricular-diastolic-function-and-untwisting-rate-in-premenopausal-women
#16
Kuniaki Hirose, Masao Daimon, Sakiko Miyazaki, Shuo-Ju Chiang, Ryoko Morimoto-Ichikawa, Masaki Maruyama, Takayuki Kawata, Hirotoshi Ohmura, Hiroyuki Daida
BACKGROUND: Although a cardioprotective effect of estrogen has been suggested by experimental studies, clinical data on the influence of estrogen on left ventricular (LV) diastolic function are sparse. The LV untwisting rate obtained by 2D speckle tracking echocardiography (2D-STE) is correlated with the time constant of LV pressure decay (tau), and this correlation is independent of left atrial pressure. Therefore, we used conventional Doppler echocardiography and 2D-STE to investigate changes in LV diastolic function during a single menstrual cycle in premenopausal women...
October 22, 2016: Journal of Cardiology
https://www.readbyqxmd.com/read/27753890/ish-nia-os-05-interleukin-6-transactivation-of-the-mineralocorticoid-receptor
#17
Brandi Wynne, Trinity Kronk, Otor Al-Khalili, Benjamin Ko, Franziska Theilig, Douglas Eaton, Robert Hoover
OBJECTIVE: Hypertension is characterized by increased sodium reabsorption along the aldosterone-sensitive distal nephron (ASDN) and systemic inflammation. Interleukin-6 (IL-6) is a possible mediator, signaling via the transmembrane IL-6 receptor alpha (IL-6Rα); however, whether IL-6Rα is present in the distal convoluted tubule (DCT) is unknown. Increased sodium reabsorption is not always correlated with increased aldosterone (Aldo). Thus, understanding how Aldo-independent sodium reabsorption occurs is critical...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27736127/identifying-feigning-in-trauma-exposed-african-immigrants
#18
Rebecca A Weiss, Barry Rosenfeld
As the populations of Western countries become more diverse, the risk of inaccurately generalizing knowledge from majority ethnic groups to minority groups is increasing. However, few of the measures used in forensic assessment are based on normative samples that represent the considerable diversity present in forensic settings. This study examined 4 commonly used measures of feigning: the Dot Counting Test (DCT; Boone, Lu, & Herzberg, 2002); the Miller Forensic Assessment of Symptoms (M-FAST; Miller, 2001); the Test of Memory Malingering (TOMM; Tombaugh, 1996); and a validity scale (atypical responding; ATR) on the Trauma Symptom Inventory-2 (Briere, 2011)...
August 15, 2016: Psychological Assessment
https://www.readbyqxmd.com/read/27733933/efficient-and-robust-ventricular-tachycardia-and-fibrillation-detection-method-for-wearable-cardiac-health-monitoring-devices
#19
Eedara Prabhakararao, M Sabarimalai Manikandan
In this Letter, the authors propose an efficient and robust method for automatically determining the VT and VF events in the electrocardiogram (ECG) signal. The proposed method consists of: (i) discrete cosine transform (DCT)-based noise suppression; (ii) addition of bipolar sequence of amplitudes with alternating polarity; (iii) zero-crossing rate (ZCR) estimation-based VTVF detection; and (iv) peak-to-peak interval (PPI) feature based VT/VF discrimination. The proposed method is evaluated using 18,000 episodes of different ECG arrhythmias taken from 6 PhysioNet databases...
September 2016: Healthcare Technology Letters
https://www.readbyqxmd.com/read/27733368/long-term-aldosterone-administration-increases-renal-na-cl-cotransporter-abundance-in-late-distal-convoluted-tubule
#20
Søren Brandt Poulsen, Birgitte M Christensen
Renal Na+-Cl- cotransporter (NCC) is expressed in early distal convoluted tubule (DCT) 1 and late DCT (DCT2). NCC activity can be stimulated by aldosterone, and the mechanism is assumed to depend on the enzyme, 11β-hydroxysteroid dehydrogenase type 2 (11β-HSD2), which inactivates glucocorticoids that would otherwise occupy aldosterone receptors. Because 11β-HSD2 in rat may only be abundantly expressed in DCT2 cells and not in DCT1 cells, it has been speculated that aldosterone specifically stimulates NCC activity in DCT2 cells...
October 12, 2016: American Journal of Physiology. Renal Physiology
keyword
keyword
67922
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"