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https://www.readbyqxmd.com/read/28550594/comparison-of-rapid-diagnostic-tests-to-detect-mycobacterium-avium-subsp-paratuberculosis-disseminated-infection-in-bovine-liver
#1
Mehdi Zarei, Masoud Ghorbanpour, Samaneh Tajbakhsh, Nader Mosavari
Mycobacterium avium subsp. paratuberculosis (MAP) causes Johne's disease, a chronic enteritis in cattle and other domestic and wild ruminants. The presence of MAP in tissues other than intestines and associated lymph nodes, such as meat and liver, is a potential public health concern. In the present study, the relationship between the results of rapid diagnostic tests of the Johne's disease, such as serum ELISA, rectal scraping PCR, and acid-fast staining, and the presence of MAP in liver was evaluated. Blood, liver, and rectal scraping samples were collected from 200 slaughtered cattle with unknown Johne's disease status...
May 27, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28550374/performance-of-an-artificial-multi-observer-deep-neural-network-for-fully-automated-segmentation-of-polycystic-kidneys
#2
Timothy L Kline, Panagiotis Korfiatis, Marie E Edwards, Jaime D Blais, Frank S Czerwiec, Peter C Harris, Bernard F King, Vicente E Torres, Bradley J Erickson
Deep learning techniques are being rapidly applied to medical imaging tasks-from organ and lesion segmentation to tissue and tumor classification. These techniques are becoming the leading algorithmic approaches to solve inherently difficult image processing tasks. Currently, the most critical requirement for successful implementation lies in the need for relatively large datasets that can be used for training the deep learning networks. Based on our initial studies of MR imaging examinations of the kidneys of patients affected by polycystic kidney disease (PKD), we have generated a unique database of imaging data and corresponding reference standard segmentations of polycystic kidneys...
May 26, 2017: Journal of Digital Imaging: the Official Journal of the Society for Computer Applications in Radiology
https://www.readbyqxmd.com/read/28549786/action-potential-based-mea-platform-for-in-vitro-screening-of-drug-induced-cardiotoxicity-using-human-ipscs-and-rat-neonatal-myocytes
#3
Danny Jans, Geert Callewaert, Olga Krylychkina, Luis Hoffman, Francesco Gullo, Dimiter Prodanov, Dries Braeken
Drug-induced cardiotoxicity poses a negative impact on public health and drug development. Cardiac safety pharmacology issues urged for the preclinical assessment of drug-induced ventricular arrhythmia leading to the design of several in vitro electrophysiological screening assays. In general, patch clamp systems allow for intracellular recordings, while multi-electrode array (MEA) technology detect extracellular activity. Here, we demonstrate a complementary metal oxide semiconductor (CMOS)-based MEA system as a reliable platform for non-invasive, long-term intracellular recording of cardiac action potentials at high resolution...
May 23, 2017: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/28549201/cytogenetic-aspects-of-a-canine-breast-carcinosarcoma-a-case-report
#4
C S D Morais, P R A M Affonso, J A Bitencourt, A A Wenceslau
This study searched a rare and aggressive type of cancer in dogs and humans, the breast carcinosarcoma. Both clinical and pathological traits of mammary carcinosarcomas in dogs are similar to humans, such as infrequent occurrence, fast tumor growth, and unfavorable prognosis when compared to carcinomas. Other possible alterations include chromosomal abnormalities that can be useful for the identification of tumoral cells and diagnosis. The aim of this study was to compare the chromosomal features of peripheral lymphocytes and tumor cells in a mammary carcinosarcoma of a 14-year-old female Poodle...
May 25, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28546909/porous-ionic-membrane-based-flexible-humidity-sensor-and-its-multifunctional-applications
#5
Tie Li, Lianhui Li, Hongwei Sun, Yan Xu, Xuewen Wang, Hui Luo, Zheng Liu, Ting Zhang
A highly flexible porous ionic membrane (PIM) is fabricated from a polyvinyl alcohol/KOH polymer gel electrolyte, showing well-defined 3D porous structure. The conductance of the PIM changes more than 70 times as the relative humidity (RH) increases from 10.89% to 81.75% with fast and reversible response at room temperature. In addition, the PIM-based sensor is insensitive to temperature (0-95 °C) and pressure (0-6.8 kPa) change, which indicates that it can be used as highly selective flexible humidity sensor...
May 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/28545813/design-synthesis-and-evaluation-of-indole-2-carboxamides-with-pan-anti-mycobacterial-activity
#6
Nicholas D Franz, Juan Manuel Belardinelli, Michael A Kaminski, Louis C Dunn, Vinicius Calado Nogueira de Moura, Michael A Blaha, Dan D Truong, Wei Li, Mary Jackson, E Jeffrey North
Current treatment regimens for non-tuberculous mycobacteria (NTM) and tuberculosis (TB) generally require long duration of therapy with multiple drugs, some of which are broad spectrum antibiotics. Despite some advances in antimicrobial compounds, there remains a need in therapy for antibiotics with specific mycobacterial targets. It has been shown that MmpL3 is an essential transporter required for the translocation of mycolic acids to the mycobacterial cell envelope. Here, we synthesized a series of indole-2-carboxamides that inhibit MmpL3 and have potent pan-activity against mycobacterial species...
May 8, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28545589/gastrointestinal-tolerance-of-low-fodmap-oral-nutrition-supplements-in-healthy-human-subjects-a-randomized-controlled-trial
#7
Jennifer Erickson, Renee Korczak, Qi Wang, Joanne Slavin
BACKGROUND: There has been increasing interest in utilizing a diet low in fermentable oligosaccharides, disaccharides, monosaccharides and polyols (FODMAPs) for the treatment of irritable bowel syndrome (IBS), a functional gastrointestinal disease. While studies have indicated that this diet can be effective at symptom reduction, it is a restrictive diet and patients may find it challenging to find low FODMAP products to meet their nutrient needs. The primary objective of this study was to assess the gastrointestinal (GI) tolerance of three low FODMAP oral nutrition supplements (ONS) in healthy adults...
May 25, 2017: Nutrition Journal
https://www.readbyqxmd.com/read/28545081/perturbed-adipose-tissue-hydrogen-peroxide-metabolism-in-centrally-obese-men-association-with-insulin-resistance
#8
May G Akl, Eman Fawzy, Maha Deif, Ayman Farouk, Amany K Elshorbagy
OBJECTIVE: Although adipose tissue hydrogen peroxide (H2O2) and its metabolizing enzymes have been linked to obesity and insulin resistance in animal studies, this relation remains to be evaluated in humans. METHODS: Non-diabetic men (N = 43, median age, 49 (37, 54 y)) undergoing abdominal surgeries were studied. Participants were classified by body mass index (BMI) into normal-weight (N = 19), or overweight/obese (Ow/Ob; BMI ≥25; N = 24). Centrally obese men were identified by waist-height ratio ≥0...
2017: PloS One
https://www.readbyqxmd.com/read/28544909/can-human-allergy-drug-fexofenadine-an-antagonist-of-histamine-h1-receptor-be-used-to-treat-dog-and-cat-homology-modeling-docking-and-molecular-dynamic-simulation-of-three-h1-receptors-in-complex-with-fexofenadine
#9
Safaa Sader, Jun Cai, Anna C G Muller, Chun Wu
Fexofenadine, a potent antagonist to human histamine 1 (H1) receptor, is a non-sedative third generation antihistamine that is widely used to treat various human allergic conditions such as allergic rhinitis, conjunctivitis and atopic dermatitis. Encouragingly, it's been successfully used to treat canine atopic dermatitis, this supports the notion that it might have a great potential for treating other canine allergic conditions and other mammal pets such as dog. Regrettably, while there is a myriad of studies conducted on the interactions of antihistamines with human H1 receptor, the similar studies on non-human pet H1 are considerably scarce...
May 17, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28544754/heterogeneous-integration-of-carbon-nanotube-graphene-for-high-performance-flexible-and-transparent-photodetectors
#10
Soonjae Pyo, Wondo Kim, Han-Il Jung, Jungwook Choi, Jongbaeg Kim
Low-dimensional carbon materials, such as semiconducting carbon nanotubes (CNTs), conducting graphene, and their hybrids, are of great interest as promising candidates for flexible, foldable, and transparent electronics. However, the development of highly photoresponsive, flexible, and transparent optoelectronics still remains limited due to their low absorbance and fast recombination rate of photoexcited charges, despite the considerable potential of photodetectors for future wearable and foldable devices...
May 24, 2017: Small
https://www.readbyqxmd.com/read/28544097/multiple-hydrogen-bonding-enables-the-self-healing-of-sensors-for-human-machine-interaction
#11
Jie Cao, Canhui Lu, Jian Zhuang, Manxiao Liu, Xinxing Zhang, Yanmei Yu, Qingchuan Tao
Despite its widespread use in signal collection, flexible sensor has been rarely used in human-machine interaction due to its indistinguishable signal, poor reliability and stability when suffered from unavoidable scratches and/or mechanical cuts. Here, we demonstrate a highly sensitive and self-healing sensor enabled by multiple hydrogen bonding network and nanostructured conductive network. The nanostructured supramolecular sensor displays extremely fast (~15 s) and repeatable self-healing ability with high healing efficiency (93% after the 3rd healing process)...
May 23, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28544002/biological-effects-and-osteoarthritic-disease-modifying-activity-of-small-molecule-cm-01
#12
Yubo Sun, Andrea Roberts, David R Mauerhan, Michael Cox, Edward N Hanley
Phosphocitrate inhibits cartilage degeneration, however, the prospect of phosphocitrate as an oral disease modifying drug might be limited. The purpose of this study was to investigate the biological effects and disease-modifying activity of a phosphocitrate "analogue", CM-01 (Carolinas Molecule-01), and test the hypothesis that CM-01 is a disease modifying drug for osteoarthritis therapy. The effects of CM-01 on calcium crystal-induced expression of matrix metalloproteinase-1 and interleukin-1 beta, cell-mediated calcification and production of proteoglycan by chondrocytes were examined in cell cultures...
May 25, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28543843/white-matter-biomarkers-from-fast-protocols-using-axially-symmetric-diffusion-kurtosis-imaging
#13
Brian Hansen, Ahmad R Khan, Noam Shemesh, Torben E Lund, Ryan Sangill, Simon F Eskildsen, Leif Østergaard, Sune N Jespersen
White matter tract integrity (WMTI) can characterize brain microstructure in areas with highly aligned fiber bundles. Several WMTI biomarkers have now been validated against microscopy and provided promising results in studies of brain development and aging, as well as in a number of brain disorders. Currently, WMTI is mostly used in dedicated animal studies and clinical studies of slowly progressing diseases, and has not yet emerged as a routine clinical tool. To this end, a less data intensive experimental method would be beneficial by enabling high resolution validation studies, and ease clinical applications by speeding up data acquisition compared with typical diffusion kurtosis imaging (DKI) protocols utilized as part of WMTI imaging...
May 22, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/28543603/silver-nanoparticles-antimicrobial-activity-cytotoxicity-and-synergism-with-n-acetyl-cysteine
#14
Selwan Hamed, Mohamed Emara, Riham M Shawky, Ramadan A El-Domany, Tareq Youssef
The fast progression of nanotechnology has led to novel therapeutic interventions. Antimicrobial activities of silver nanoparticles (Ag NPs) were tested against standard ATCC strains of Staphylococcus aureus (ATCC 9144), Escherichia coli (O157:H7), Pseudomonas aeruginosa (ATCC 27853), and Candida albicans (ATCC 90028) in addition to 60 clinical isolates collected from cancer patients. Antimicrobial activity was tested by disk diffusion method and MIC values for Ag NPs alone and in combination with N-acetylcysteine (NAC) against tested pathogens were determined by broth microdilution method...
May 22, 2017: Journal of Basic Microbiology
https://www.readbyqxmd.com/read/28543550/polycystic-ovary-morphology-is-associated-with-insulin-resistance-in-women-with-polycystic-ovary-syndrome
#15
So-Hyeon Hong, Yeon-Ah Sung, Young Sun Hong, Kyungah Jeong, Hyewon Chung, Hyejin Lee
BACKGROUND/OBJECTIVES: Polycystic ovary syndrome (PCOS) is a heterogeneous disorder characterised by chronic anovulation, hyperandrogenenism, polycystic ovary morphology (PCOM), and metabolic disturbances including insulin resistance and type 2 diabetes mellitus. Although insulin resistance could be associated with PCOM, recent studies have shown controversial results. The aim of this study was to determine the relationship between PCOM and insulin resistance. SUBJECTS/METHODS: This was a cross-sectional clinical study...
May 20, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28542610/gpr40-partial-agonist-mk-2305-lower-fasting-glucose-in-the-goto-kakizaki-rat-via-suppression-of-endogenous-glucose-production
#16
Corin Miller, Michele J Pachanski, Melissa E Kirkland, Daniel T Kosinski, Joel Mane, Michelle Bunzel, Jin Cao, Sarah Souza, Brande Thomas-Fowlkes, Jerry Di Salvo, Adam B Weinglass, Xiaoyan Li, Robert W Myers, Kevin Knagge, Paul E Carrington, William K Hagmann, Maria E Trujillo
GPR40 (FFA1) is a fatty acid receptor whose activation results in potent glucose lowering and insulinotropic effects in vivo. Several reports illustrate that GPR40 agonists exert glucose lowering in diabetic humans. To assess the mechanisms by which GPR40 partial agonists improve glucose homeostasis, we evaluated the effects of MK-2305, a potent and selective partial GPR40 agonist, in diabetic Goto Kakizaki rats. MK-2305 decreased fasting glucose after acute and chronic treatment. MK-2305-mediated changes in glucose were coupled with increases in plasma insulin during hyperglycemia and glucose challenges but not during fasting, when glucose was normalized...
2017: PloS One
https://www.readbyqxmd.com/read/28542550/a-spatio-temporal-assessment-of-simian-human-immunodeficiency-virus-shiv-evolution-reveals-a-highly-dynamic-process-within-the-host
#17
Alison F Feder, Christopher Kline, Patricia Polacino, Mackenzie Cottrell, Angela D M Kashuba, Brandon F Keele, Shiu-Lok Hu, Dmitri A Petrov, Pleuni S Pennings, Zandrea Ambrose
The process by which drug-resistant HIV-1 arises and spreads spatially within an infected individual is poorly understood. Studies have found variable results relating how HIV-1 in the blood differs from virus sampled in tissues, offering conflicting findings about whether HIV-1 throughout the body is homogeneously distributed. However, most of these studies sample only two compartments and few have data from multiple time points. To directly measure how drug resistance spreads within a host and to assess how spatial structure impacts its emergence, we examined serial sequences from four macaques infected with RT-SHIVmne027, a simian immunodeficiency virus encoding HIV-1 reverse transcriptase (RT), and treated with RT inhibitors...
May 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28541651/channel-crack-designed-gold-pu-sponge-for-highly-elastic-piezoresistive-sensor-with-excellent-detectability
#18
Yun-Hui Wu, Hai-Zhou Liu, Song Chen, Xuchu Dong, Ping-Ping Wang, Shuqi Liu, Yong Lin, Yong Wei, Lan Liu
It is a great challenge to fabricate piezoresistive sensors that possess high elasticity, large-area compliance and excellent detectability to satisfy both extremely tiny and large human activities monitoring. Herein, a novel and facile strategy is reported to manufacture highly elastic channel crack-based gold@PU sponge piezoresistive material. The elastic 3D conductive network is successfully prepared by gold ion sputtering, and channel cracks are skillfully designed on the 3D sponge skeletons. Such novel structure makes these fabricated sensors are capable of monitoring both tiny and large human motions, which originate from the nano-crack joint sensing mechanism and physical contact of conductive interconnected network...
May 25, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28541532/constitutive-activation-of-akt2-in-humans-leads-to-hypoglycemia-without-fatty-liver-or-metabolic-dyslipidemia
#19
Marina Minic, Nuno Rocha, Julie Harris, Matthijs P Groeneveld, Sarah Leiter, Nicholas Wareham, Alison Sleigh, Pascale De Lonlay, Khalid Hussain, Stephen O'Rahilly, Robert K Semple
Context: The activating p.Glu17Lys mutation in AKT2, a kinase mediating many of insulin's metabolic actions, causes hypoinsulinemic hypoglycemia and left-sided hemihypertrophy. The wider metabolic profile and longer term natural history of the condition has not yet been reported. Objective: To characterise the metabolic and cellular consequences of the AKT2 p.Glu17Lys mutation in two previously reported males at the age of 17 years. Design/intervention: Body composition analysis using dual energy X ray absorptiometry, overnight profiling of plasma glucose, insulin and fatty acids, oral glucose tolerance testing, and magnetic resonance spectroscopy to determine hepatic triglyceride content were undertaken...
May 23, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28541191/fast-numerical-simulation-of-focused-ultrasound-treatments-during-respiratory-motion-with-discontinuous-motion-boundaries
#20
Michael Schwenke, Joachim Georgii, Tobias Preusser
OBJECTIVE: Focused ultrasound (FUS) is rapidly gaining clinical acceptance for several target tissues in the human body. Yet, treating liver targets is not clinically applied due to a high complexity of the procedure (noninvasiveness, target motion, complex anatomy, blood cooling effects, shielding by ribs, and limited image-based monitoring). To reduce the complexity, numerical FUS simulations can be utilized for both treatment planning and execution. These use-cases demand highly accurate and computationally efficient simulations...
May 23, 2017: IEEE Transactions on Bio-medical Engineering
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