keyword
MENU ▼
Read by QxMD icon Read
search

Mct

keyword
https://www.readbyqxmd.com/read/28095673/a-comparative-study-of-hepatotoxicity-of-pyrrolizidine-alkaloids-retrorsine-and-monocrotaline
#1
Xiaojing Yang, Weiwei Li, Ying Sun, Xiucai Guo, Wenlin Huang, Ying Peng, Jiang Zheng
Many pyrrolizidine alkaloids (PAs) can cause liver injury in animals and humans. Different hepatotoxic PAs can produce similar hepatotoxic effects, but the degree of their toxicities may vary widely. Retrorsine (RTS) and monocrotaline (MCT) share the same core structure (retronecine) and similar metabolic activation pathway. RTS and MCT both produced liver injury but the former was more hepatotoxic than the latter. Enzyme kinetic study demonstrated that the value of Vmax/Km for RTS was 5.5-fold larger than that of MCT...
January 17, 2017: Chemical Research in Toxicology
https://www.readbyqxmd.com/read/28095571/effectiveness-of-the-mohs-and-close-technique-in-increasing-the-efficiency-of-a-mohs-micrographic-surgery
#2
Dhwani Mehta, Rebecca Jacobsen, Tonja Godsey, Brian Adams, Hugh Gloster
INTRODUCTION: Mohs micrographic surgery (MMS) is successful and cost effective, but may be time consuming as patients are required to wait for final wound repair until margins are clear. We propose for selected cases the "Mohs and Close technique" (MCT), in which the defect is immediately repaired after tumor resection rather than waiting until margins are clear. METHODS: MCT was only performed on tumors that had clearly de ned borders, low risk histology, whose resulting defect after exci- sion required either a primary or partial closure, and whose repair wouldn't change to a different repair option if further stages of exci- sion were necessary...
December 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28091978/patient-specific-optimisation-of-administered-activity-and-acquisition-times-for-18-f-fdg-pet-imaging
#3
Fred Wickham, Helena McMeekin, Maria Burniston, Daniel McCool, Deborah Pencharz, Annah Skillen, Thomas Wagner
BACKGROUND: The purpose of this study is to identify a method for optimising the administered activity and acquisition time for (18)F-FDG PET imaging, yielding images of consistent quality for patients with varying body sizes and compositions, while limiting radiation doses to patients and staff. Patients referred for FDG scans had bioimpedance measurements. They were injected with 3 MBq/kg of (18)F up to 370 MBq and scanned on a Siemens Biograph mCT at 3 or 4 min per bed position...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28079471/pre-implant-modeling-of-depth-lead-placement-in-white-matter-for-maximizing-the-extent-of-cortical-activation-during-direct-neurostimulation-therapy
#4
Leopoldo Cendejas Zaragoza, Richard W Byrne, Marvin A Rossi
INTRODUCTION: The objective of this work was to predict preoperatively the maximum extent to which direct stimulation therapy can propagate through an epileptic circuit for stabilizing refractory focal-onset epilepsy. A pre-surgical workflow is presented which comprises a computationally intensive process for calculating the volume of cortical activation (VOCA) surrounding cylindrical depth contacts virtually placed in white matter. The process employs an activation function (AF) derived from cable modeling of an axon...
January 12, 2017: Neurological Research
https://www.readbyqxmd.com/read/28058543/genomic-profiling-of-canine-mast-cell-tumors-identifies-dna-copy-number-aberrations-associated-with-kit-mutations-and-high-histological-grade
#5
Hiroyuki Mochizuki, Rachael Thomas, Scott Moroff, Matthew Breen
Mast cell tumor (MCT) is the most common skin malignancy of domestic dogs and presents with a widely variable clinical behavior. Although activating KIT mutations are present in approximately 20% of canine MCTs, molecular etiology is largely unknown for the majority of this cancer. Characterization of genomic alterations in canine MCTs may identify genomic regions and/or genes responsible for their development and progression, facilitating the discovery of new therapeutic targets and improved clinical management of this heterogeneous cancer...
January 5, 2017: Chromosome Research
https://www.readbyqxmd.com/read/28055284/aspirin-attenuates-monocrotaline-induced-pulmonary-arterial-hypertension-in-rats-by-suppressing-the-erk-mapk-pathway
#6
Hua Gao, Yuqing Cheng, Liguo Zong, Linian Huang, Chenchen Qiao, Wei Li, Beilei Gong, Junfeng Hu, Haitao Liu, Xiaojing Wang, Chengling Zhao
This study aimed to investigate the therapeutic effects of aspirin (ASA) and its potential mechanisms of action in monocrotaline (MCT)-induced pulmonary arterial hypertension (PAH) in rats. PAH was induced in a rat model by a single intraperitoneal (IP) injection of MCT. Saline was injected in a control group. Two weeks following MCT injection, right ventricular systolic pressure (RVSP) and systolic blood pressure (SBP) were measured in six rats from each group to confirm establishment of a PAH model. The remaining MCT-treated rats were randomly allocated to receive IP injection of saline, ASA, or ERK1/2 inhibitor PD98059...
January 5, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28052520/ikaros-expression-in-distinct-bone-marrow-cell-populations-as-a-candidate-biomarker-for-outcome-with-lenalidomide-dexamethasone-therapy-in-multiple-myeloma
#7
Arnold Bolomsky, Wolfgang Hübl, Stefano Spada, Ercan Müldür, Karin Schlangen, Daniel Heintel, Alberto Rocci, Adalbert Weißmann, Veronique Fritz, Martin Willheim, Niklas Zojer, Antonio Palumbo, Heinz Ludwig
Immunomodulatory drugs (IMiDs) are a cornerstone in the treatment of multiple myeloma (MM), but specific markers to predict outcome are still missing. Recent work pointed to a prognostic role for IMiD target genes (e.g. CRBN). Moreover, indirect activity of IMiDs on immune cells correlated with outcome, raising the possibility that cell populations in the bone marrow (BM) microenvironment could serve as biomarkers. We therefore analysed gene expression levels of six IMiD target genes in whole BM samples of 44 myeloma patients treated with lenalidomide-dexamethasone...
January 4, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28052307/ultrashort-bowel-syndrome-outcome-in-children-treated-in-a-multidisciplinary-intestinal-rehabilitation-unit
#8
Mariela Dore, Paloma Triana Junco, Ane Andres Moreno, Vanesa Nuñez Cerezo, Martha Romo Muñoz, Alba Sánchez Galán, Alejandra Vilanova Sánchez, Gerardo Prieto, Esther Ramos, Francisco Hernandez, Leopoldo Martínez Martínez, Manuel Lopez Santamaria
Aim Short bowel syndrome (SBS) is the leading cause of intestinal failure (IF) in the pediatric population. Our aim was to review long-term outcome of ultrashort bowel syndrome (USBS) in an Intestinal Rehabilitation Unit (IRU). Patients and Methods Retrospective study of patients with USBS (defined as < 10 cm of remnant small bowel) treated between 2000 and 2015. Demographic data, clinical, and treatment variables including parenteral nutrition (PN), surgical techniques, and intestinal transplantation (IT) were analyzed...
January 4, 2017: European Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28050596/an-ovarian-mature-cystic-teratoma-evolving-in-squamous-cell-carcinoma-a-case-report-and-review-of-the-literature
#9
REVIEW
C Goudeli, A Varytimiadi, N Koufopoulos, J Syrios, E Terzakis
Mature cystic teratomas (MCT), also known as dermoid cysts, are the most common ovarian germ cell tumors and the most common ovarian neoplasms in patients younger than 20 years. Malignant transformation (MT) is a rare complication of MCTs which may occur in 1-2% of the cases. Squamous cell carcinoma (SCC) is the most frequent histology arising from MCTs and its appearance depends on diverse risk factors such as patient's age, the size of the tumor and levels of serum tumor markers. Diagnosis and treatment constitute a big challenge due to the rarity and the aggressive course of this entity...
February 2017: Gynecologic Oncology Reports
https://www.readbyqxmd.com/read/28048254/th-cd-207b-08-relationship-between-pixel-noise-and-task-specific-low-contrast-detectability-for-various-patient-sizes-in-abdomen-ct
#10
J Nute, Y Zhou, A Scott, C Lee
PURPOSE: To establish a relationship between pixel noise and the statistically defined minimum detectable contrast for various phantom sizes in order to provide a means for dose modulation driven by the task-specific low contrast detectability. METHODS: Seven anthropomorphically-shaped abdomen phantoms (TE01-TE08, CIRS) were employed to mimic a wide range of patient sizes. Each phantom was scanned on a Siemens 64-slice mCT using a range of CTDIvol values (1-38mGy) with an average of 19 dose levels per phantom...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047514/mo-de-207b-07-assessment-of-reproducibility-of-fdg-pet-based-radiomics-features-across-scanners-using-phantom-imaging
#11
D Fried, J Meier, O Mawlawi, S Zhou, G Ibbott, Z Liao, L Court
PURPOSE: Use a NEMA-IEC PET phantom to assess the robustness of FDG-PET-based radiomics features to changes in reconstruction parameters across different scanners. METHODS: We scanned a NEMA-IEC PET phantom on 3 different scanners (GE Discovery VCT, GE Discovery 710, and Siemens mCT) using a FDG source-to-background ratio of 10:1. Images were retrospectively reconstructed using different iterations (2-3), subsets (21-24), Gaussian filter widths (2, 4, 6mm), and matrix sizes (128,192,256)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046958/th-cd-207b-10-effect-of-ct-reconstruction-filter-on-measured-hounsfield-values-in-lung-nodules
#12
K Little, I Reiser, A Sanchez, J Chung, H MacMahon, Z Lu
PURPOSE: Measured Hounsfield numbers in CT are used by radiologists to determine the presence of calcium or fat in lung nodules, either of which suggests a benign diagnosis. However, substantial variations in Hounsfield number may arise due to the use of different reconstruction parameters such as the filter/kernel, leading to measurement inaccuracies. This quality improvement project was developed to demonstrate measurement pitfalls and to identify acceptable conditions for incorporating Hounsfield values as a factor in lung nodule diagnosis...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046729/su-g-206-09-consistent-low-contrast-detectability-and-optimal-dose-for-different-patient-sizes-in-abdominal-ct
#13
Y Zhou, J Nute, A Scott, C Lee
PURPOSE: To study optimal dose dictated by consistent low contrast detectability for various patient sizes in abdominal CT. METHODS: Seven realistically shaped tissue-equivalent abdomen phantoms (CIRS TE01-TE08) were utilized. Helical scans were performed on each phantom with GE 750 HD and Siemens mCT 64 at different dose levels. The images were reconstructed using comparable kernels (standard and Bf35 for GE and Siemens, respectively). The noise images, obtained using subtraction from adjacent slices, were partitioned into matrices of square cells matching different sizes of lesions (1...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28044232/lipid-emulsions-containing-medium-chain-triacylglycerols-blunt-bradykinin-induced-endothelium-dependent-relaxation-in-porcine-coronary-artery-rings
#14
Said Amissi, Julie Boisramé-Helms, Mélanie Burban, Sherzad K Rashid, Antonio J León-González, Cyril Auger, Florence Toti, Ferhat Meziani, Valérie B Schini-Kerth
Lipid emulsions for parenteral nutrition are used to provide calories and essential fatty acids for patients. They have been associated with hypertriglyceridemia, hypercholesterolemia, and metabolic stress, which may promote the development of endothelial dysfunction in patients. The aim of the present study was to determine whether five different industrial lipid emulsions may affect the endothelial function of coronary arteries. Porcine coronary artery rings were incubated with lipid emulsions 0.5, 1, or 2% (v/v) for 30 min before the determination of vascular reactivity in organ chambers and the level of oxidative stress using electron paramagnetic resonance...
January 2, 2017: Lipids
https://www.readbyqxmd.com/read/28039857/consistent-low-contrast-detectability-for-variable-patient-sizes-and-corresponding-dose-in-abdominal-ct
#15
Yifang Zhou, Jessica Nute, Alexander Scott, Christina Lee
PURPOSE: For CT dose optimization, one needs to address two important questions. The first is how various lesion specific detection tasks demand different patient doses for the same patient. The second is how the variation of the patient size requires different patient doses for the same lesion detection task. In this study, we attempted to find quantitative solutions to these questions by utilizing a wide range of abdomen phantoms. METHODS: A simplified model with a monochromatic fan-beam passing through a bowtie filter and an elliptical object was proposed...
December 31, 2016: Medical Physics
https://www.readbyqxmd.com/read/28039591/visualizing-polymeric-bioresorbable-scaffolds-with-three-dimensional-image-reconstruction-using-contrast-enhanced-micro-computed-tomography
#16
Sheng Tu, Fudong Hu, Wei Cai, Liyan Xiao, Linlin Zhang, Hong Zheng, Qiong Jiang, Lianglong Chen
There are no previous studies showing how to visualize polymeric bioresorbable scaffolds (BRSs) by micro-computed tomography (mCT). There are no previous studies showing how to visualize polymeric bioresorbable scaffolds (BRSs) by micro-computed tomography (mCT). This study aimed to explore the feasibility of detecting polymeric BRS with 3-dimensional reconstruction of BRS images by contrast-enhanced mCT and to determine the optimal imaging settings. BRSs, made of poly-L-lactic acid (PLLA), were implanted in coronary bifurcation models...
December 30, 2016: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28036116/hmgb1-down-regulation-mediates-terameprocol-vascular-anti-proliferative-effect-in-experimental-pulmonary-hypertension
#17
Rita Nogueira-Ferreira, Manuel J Ferreira-Pinto, Ana Filipa Silva, Rui Vitorino, Joana Justino, Raquel Costa, Daniel Moreira-Gonçalves, Jean-François Quignard, Thomas Ducret, Jean-Pierre Savineau, Adelino F Leite-Moreira, Rita Ferreira, Tiago Henriques-Coelho
Pulmonary arterial hypertension (PAH) is a progressive disease with a poor prognosis. Pulmonary artery smooth muscle cells (PASMCs) play a crucial role in PAH pathophysiology, displaying a hyperproliferative and apoptotic-resistant phenotype. In the present study, we evaluated the potential therapeutic role of terameprocol (TMP), an inhibitor of cellular proliferation and promoter of apoptosis, in a well-established pre-clinical model of PAH induced by monocrotaline (MCT) and studied the biological pathways modulated by TMP in PASMCs...
December 30, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28003588/effectiveness-of-medium-chain-triglyceride-oil-therapy-in-two-japanese-citrin-deficient-siblings-evaluation-using-oral-glucose-tolerance-tests
#18
Hiroki Otsuka, Hideo Sasai, Elsayed Abdelkreem, Norio Kawamoto, Minako Kawamoto, Toshiya Kamiya, Yasuo Tanimoto, Atsuo Kikuchi, Shigeo Kure, Chikahiko Numakura, Kiyoshi Hayasaka, Toshiyuki Fukao
Citrin deficiency, an inherited defect of the liver-type mitochondrial aspartate/glutamate carrier isoform (citrin), may cause impairment of glycolysis because of an increase in the cytosolic NADH/NAD(+) ratio. We report a Japanese boy whose main complaint was recurrent hypoglycemic episodes. He was suspected as having citrin deficiency because of his peculiar preference for protein- and fat-rich food. His young sister also had a similar food preference. Both siblings were diagnosed with citrin deficiency by genetic analysis...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27999529/exogenous-ketone-supplements-reduce-anxiety-related-behavior-in-sprague-dawley-and-wistar-albino-glaxo-rijswijk-rats
#19
Csilla Ari, Zsolt Kovács, Gabor Juhasz, Cem Murdun, Craig R Goldhagen, Andrew M Koutnik, Angela M Poff, Shannon L Kesl, Dominic P D'Agostino
Nutritional ketosis has been proven effective for seizure disorders and other neurological disorders. The focus of this study was to determine the effects of ketone supplementation on anxiety-related behavior in Sprague-Dawley (SPD) and Wistar Albino Glaxo/Rijswijk (WAG/Rij) rats. We tested exogenous ketone supplements added to food and fed chronically for 83 days in SPD rats and administered sub-chronically for 7 days in both rat models by daily intragastric gavage bolus followed by assessment of anxiety measures on elevated plus maze (EPM)...
2016: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/27997763/the-stem-cell-growth-factor-receptor-kit-is-not-expressed-on-interstitial-cells-in-bladder
#20
Thomas Gevaert, Dirk De Ridder, Els Vanstreels, Dirk Daelemans, Wouter Everaerts, Frank Van Der Aa, Isabel Pintelon, Jean-Pierre Timmermans, Tania Roskams, Clara Steiner, Jochen Neuhaus
The mast/stem cell growth factor receptor KIT has long been assumed to be a specific marker for interstitial cells of Cajal (ICC) in the bladder, with possible druggable perspectives. However, several authors have challenged the presence of KIT(+) ICC in recent years. The aim of this study was therefore to attempt to clarify the conflicting reports on KIT expression in the bladder of human beings, rat, mouse and guinea pig and to elucidate the possible role of antibody-related issues and interspecies differences in this matter...
December 20, 2016: Journal of Cellular and Molecular Medicine
keyword
keyword
10314
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"