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https://www.readbyqxmd.com/read/28727974/autoamputation-of-the-appendix-presenting-as-a-calcified-abdominal-mass-following-necrotizing-enterocolitis
#1
Brent R Weil, Alyaa Al-Ibraheemi, Sara O Vargas, Shawn J Rangel
Autoamputation of the appendix has previously been reported in the literature, but it is likely an unusual event. We report a 2-year-old male child who had previously undergone laparotomy and bowel resection for necrotizing enterocolitis. Two years later a calcified intra-abdominal mass was identified on abdominal radiography and ultrasonography. Eventual laparotomy revealed a densely calcified mass within the transverse mesocolon. The mass was uneventfully resected. Pathologic evaluation showed appendiceal tissue, consistent with prior autoamputation of the vermiform appendix...
July 2017: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/28721548/left-atrium-passive-ejection-fraction-is-the-most-sensitive-index-of-type-2-diabetes-mellitus-related-cardiac-changes
#2
Yongning Shang, Xiaochun Zhang, Weiling Leng, Xiaotian Lei, Liu Chen, Ziwen Liang, Jian Wang
The aims of this study were to use cardiovascular magnetic resonance (CMR) cine to assess left atrium (LA) and left ventricle (LV) function and structure in normotensive type 2 diabetes mellitus (T2DM) patients and to identify the most sensitive index of those T2DM-related cardiac changes. Fifty T2DM patients with normotension (25 males, age 54.7 ± 8.7 years, duration of diabetes: 7.5 ± 5.1 years) and 35 controls (16 males, age: 52.2 ± 13.2 years) were prospectively enrolled. All patients were scanned using CMR four- and two-chamber long-axis cine to assess LA and LV structure and function...
July 18, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28717514/gyrations-in-african-mortality-and-their-effect-on-economic-growth
#3
David N Weil
I examine recent changes in African mortality and discuss their potential economic and demographic effects. Growth in life expectancy sharply departed from its trend after 1990, and then experienced a sharp acceleration after 2005. This latter acceleration was due overwhelmingly to improvements in HIV and malaria. Economists differ in their estimates of how large the structural effect of health on income is, with many estimates being relatively small. Taking seriously the delays built into many plausible causal channels would lead one to expect that any economic effects of these mortality changes, if they are detectable at all, will not appear for several decades...
March 2017: Journal of Demographic Economics
https://www.readbyqxmd.com/read/28709399/draft-sequencing-and-assembly-of-the-genome-of-the-world-s-largest-fish-the-whale-shark-rhincodon-typus-smith-1828
#4
Timothy D Read, Robert A Petit, Sandeep J Joseph, Md Tauqeer Alam, M Ryan Weil, Maida Ahmad, Ravila Bhimani, Jocelyn S Vuong, Chad P Haase, D Harry Webb, Milton Tan, Alistair D M Dove
BACKGROUND: The whale shark (Rhincodon typus) has by far the largest body size of any elasmobranch (shark or ray) species. Therefore, it is also the largest extant species of the paraphyletic assemblage commonly referred to as fishes. As both a phenotypic extreme and a member of the group Chondrichthyes - the sister group to the remaining gnathostomes, which includes all tetrapods and therefore also humans - its genome is of substantial comparative interest. Whale sharks are also listed as an endangered species on the International Union for Conservation of Nature's Red List of threatened species and are of growing popularity as both a target of ecotourism and as a charismatic conservation ambassador for the pelagic ecosystem...
July 14, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28700653/plasma-bradykinin-and-early-diabetic-nephropathy-lesions-in-type-1-diabetes-mellitus
#5
Kevin M Wheelock, Jian Cai, Helen C Looker, Michael L Merchant, Robert G Nelson, Gudeta D Fufaa, E Jennifer Weil, Harold I Feldman, Ramachandran S Vasan, Paul L Kimmel, Brad H Rovin, Michael Mauer, Jon B Klein
OBJECTIVE: To examine the association of bradykinin and related peptides with the development of diabetic nephropathy lesions in 243 participants with type 1 diabetes (T1D) from the Renin-Angiotensin System Study who, at baseline, were normoalbuminuric, normotensive and had normal or increased glomerular filtration rate (GFR). DESIGN: Plasma concentrations of bradykinin and related peptides were measured at baseline by quantitative mass spectrometry. All participants were randomly assigned at baseline to receive placebo, enalapril or losartan during the 5 years between kidney biopsies...
2017: PloS One
https://www.readbyqxmd.com/read/28695797/effects-of-630-nm-red-and-460-nm-blue-light-emitting-diode-irradiation-on-healing-of-the-skin-wound-in-japanese-big-ear-white-rabbit
#6
Yanhong Li, Jigang Zhang, Yanfeng Xu, Yunlin Han, Binbin Jiang, Lan Huang, Hua Zhu, Yuhuan Xu, Weiling Yang, Chuan Qin
Objective To observe the effects of 630 nm red light and 460 nm blue light emitting diode irradiation on the healing of skin wounds in Japanese big-ear white rabbits. Methods The skin wound model was established with 8 Japanese big-ear white rabbits. Three parts of vulnus in each rabbit were used:two parts of vulnus were irradiated vertically by red and blue LED light,respectively(15 min/time),and the distance between lights and wounds was 15 cm;the 3(rd) part of the wound was used as a control. On the 21(st) day of the wounds exposure to light,the number of healing wounds and the percentage of healing area were recorded and the treatment effect of these two light sources was compared...
June 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/28692883/effects-of-multi-walled-carbon-nanotubes-with-various-diameters-on-bacterial-cellular-membranes-cytotoxicity-and-adaptive-mechanisms
#7
Fan Yang, Qun Jiang, Weiling Xie, Ying Zhang
The effect of multi-walled carbon nanotubes (MWNTs) with different diameters on the destruction degree toward cellular membranes of bacterial has been explored by investigating the viability of bacteria and the change of composition and surface properties in cellular membranes with the exposure of MWNTs. The atrazine degrading bacteria Acinetobacter lwoffii DNS32 (DNS32) is chosen as the model species and Escherichia coli (E. coli) and Bacillus subtilis (B. subtilis) are selected as the comparison specie...
July 3, 2017: Chemosphere
https://www.readbyqxmd.com/read/28689970/structural-dynamics-of-zika-virus-ns2b-ns3-protease-binding-to-dipeptide-inhibitors
#8
Yan Li, Zhenzhen Zhang, Wint Wint Phoo, Ying Ru Loh, Weiling Wang, Shuang Liu, Ming Wei Chen, Alvin W Hung, Thomas H Keller, Dahai Luo, CongBao Kang
The NS2B-NS3 viral protease is an attractive drug target against Zika virus (ZIKV) due to its importance in viral replication and maturation. Here we report the crystal structure of protease in complex with a dipeptide inhibitor, Acyl-KR-aldehyde (compound 1). The aldehyde moiety forms a covalent bond with the catalytic Ser(135) of NS3. The Arg and Lys residues in the inhibitor occupy the S1 and S2 sites of the protease, respectively. Nuclear magnetic resonance studies demonstrate that the complex is in the closed conformation in solution...
June 23, 2017: Structure
https://www.readbyqxmd.com/read/28679800/advanced-illness-and-end-of-life-care
#9
EDITORIAL
Alan R Weil
No abstract text is available yet for this article.
July 1, 2017: Health Affairs
https://www.readbyqxmd.com/read/28679734/high-prevalence-of-myeloid-neoplasms-in-adults-with-non-langerhans-cell-histiocytosis
#10
Matthias Papo, Eli L Diamond, Fleur Cohen-Aubart, Jean-François Emile, Damien Roos-Weil, Nishant Gupta, Benjamin H Durham, Neval Ozkaya, Ahmet Dogan, Gary A Ulaner, Raajit Rampal, Jean-Emmanuel Kahn, Thomas Sené, Frédéric Charlotte, Baptiste Hervier, Caroline Besnard, Olivier A Bernard, Catherine Settegrana, Nathalie Droin, Zofia Hélias-Rodzewicz, Zahir Amoura, Omar Abdel-Wahab, Julien Haroche
Erdheim-Chester Disease (ECD) is a rare non-Langerhans Cell histiocytosis that most commonly affects adults and is driven by a high frequency of mutations in BRAF, MAP2K1, and kinases promoting MAP kinase signaling. Due to the relative rarity of ECD, key clinical features of the disease may not be well defined. Across a multi-institutional cohort of 189 patients with ECD and ECD overlapping with Langerhans Cell Histiocytosis (so-called Mixed Histiocytosis (MH)), we identified an unexpected and heretofore undescribed frequent occurrence of myeloid neoplasms amongst patients with ECD and MH...
July 5, 2017: Blood
https://www.readbyqxmd.com/read/28677778/wild%C3%A2-type-blocking-pcr-coupled-with-internal-competitive-amplified-fragment-improved-the-detection-of-rare-mutation-of-kras
#11
Jia Peng, Kun Wei, Xiang Zhao, Ke Yang, Huan Wang, Yang Zhang, Mei Guo, Jing He, Haiyan Wu, Yongchuan Li, Na Zhao, Qing Huang, Weiling Fu
Mutant KRAS proto‑oncogene GTPase (KRAS) serves an important role in predicting the development, diagnosis, treatment and efficacy of targeted drug therapies for colorectal cancer. To improve the detection efficacy of trace amount of mutant KRAS, the locked nucleic acid‑based method was modified in the present study. Internal competitive amplification fragments were used to improve the inhibition of wild‑type KRAS with a wild‑type blocking (WTB) probe and specifically amplify the trace amounts of mutant KRAS...
June 29, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28675775/structural-characterization-of-the-linked-ns2b-ns3-protease-of-zika-virus
#12
Yan Li, Wint Wint Phoo, Ying Ru Loh, Zhenzhen Zhang, Elizabeth Yihui Ng, Weiling Wang, Thomas H Keller, Dahai Luo, CongBao Kang
The Zika virus (ZIKV) NS2B-NS3 protease is an important drug target. The conventional flaviviral protease constructs used for structural studies contain the NS2B cofactor region linked to the NS3 protease domain via a glycine-rich flexible linker. Here, we examined the structural dynamics of this conventional Zika protease (gZiPro) using NMR spectroscopy. Although the glycine-rich linker in gZiPro does not alter the overall folding of the protease in solution, gZiPro is not homogenous in ion exchange chromatography...
July 4, 2017: FEBS Letters
https://www.readbyqxmd.com/read/28671458/scaffold-hopping-and-optimization-of-maleimide-based-porcupine-inhibitors
#13
Soo Yei Ho, Jenefer Alam, Duraiswamy Athisayamani Jeyaraj, Weiling Wang, Grace Ruiting Lin, Shi Hua Ang, Eldwin Sum Wai Tan, May Ann Lee, Zhiyuan Ke, Babita Madan, David M Virshup, Li Jun Ding, Vithya Manoharan, Yun Shan Chew, Choon Bing Low, Vishal Pendharkar, Kanda Sangthongpitag, Jeffrey Hill, Thomas H Keller, Anders Poulsen
Porcupine is an O-acyltransferase that regulates Wnt secretion. Inhibiting porcupine may block the Wnt pathway which is often dysregulated in various cancers. Consequently porcupine inhibitors are thought to be promising oncology therapeutics. A high throughput screen against porcupine revealed several potent hits that were confirmed to be Wnt pathway inhibitors in secondary assays. We developed a pharmacophore model and used the putative bioactive conformation of a xanthine inhibitor for scaffold hopping. The resulting Maleimide scaffold was optimized to sub-nanomolar potency while retaining good physical druglike properties...
July 3, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28668503/spatial-analysis-of-leptospira-infection-in-muskrats-in-lower-saxony-germany-and-the-association-with-human-leptospirosis
#14
Jillian Hurd, Olaf Berke, Zvonimir Poljak, Martin Runge
Leptospirosis has been reported as an emerging zoonosis and the most widespread zoonotic disease in the world. Muskrats (Ondatra zibethicus) have been known to carry Leptospira serovars, which have been linked to Weil's disease - a serious and life threatening disease in humans. In this study, muskrats were sampled across 43 regions of Lower Saxony, Germany, during 2007 to 2009 and were tested for leptospirosis using Polymerase Chain Reaction (PCR). Circular and flexibly shaped spatial scan tests were applied and detected two leptospirosis clusters in Lower Saxony, Germany...
June 24, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28662154/how-minimal-executive-feedback-influences-creative-idea-generation
#15
Hicham Ezzat, Anaëlle Camarda, Mathieu Cassotti, Marine Agogué, Olivier Houdé, Benoît Weil, Pascal Le Masson
The fixation effect is known as one of the most dominant of the cognitive biases against creativity and limits individuals' creative capacities in contexts of idea generation. Numerous techniques and tools have been established to help overcome these cognitive biases in various disciplines ranging from neuroscience to design sciences. Several works in the developmental cognitive sciences have discussed the importance of inhibitory control and have argued that individuals must first inhibit the spontaneous ideas that come to their mind so that they can generate creative solutions to problems...
2017: PloS One
https://www.readbyqxmd.com/read/28656244/a-genome-wide-analysis-of-the-gene-expression-profiles-and-alternative-splicing-events-during-the-hypoxia-regulated-osteogenic-differentiation-of-human-cartilage-endplate-derived-stem-cells
#16
Yuan Yao, Qiyue Deng, Chao Sun, Weiling Song, Huan Liu, Yue Zhou
It has been hypothesized that intervertebral disc degeneration is initiated by degeneration of the cartilage endplate (CEP), which is characterized by cartilage ossification. CEP‑derived stem cells (CESCs), with the potential for chondro‑osteogenic differentiation, may be responsible for the balance between chondrification and ossification in the CEP. The CEP remains in an avascular and hypoxic microenvironment; the present study observed that hypoxia was able to markedly inhibit the osteogenic differentiation of CESCs...
August 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28650045/targeted-delivery-of-geranylgeranylacetone-to-mitochondria-by-triphenylphosphonium-modified-nanoparticles-a-promising-strategy-to-prevent-aminoglycoside-induced-hearing-loss
#17
Zhenjie Wang, Xiao Kuang, Jia Shi, Weiling Guo, Hongzhuo Liu
Prevention of hair cell death is an important target for the prevention of hearing loss. Here, we report the engineering of biodegradable poly(lactic-co-glycolic acid) nanoparticles (PLGA NPs) decorated with triphenylphosphonium (TPP) cations as a robust mitochondrial delivery platform, with the aim of preserving mitochondrial integrity and shutting off the initiation of cell death. Geranylgeranylacetone (GGA), a 70 kDa heat shock protein (HSP70) inducer, was used as a therapeutic molecule to attenuate gentamicin (Gen) induced hearing loss...
June 26, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/28644874/position-and-orientation-inference-via-on-board-triangulation
#18
Madhu Advani, Daniel S Weile
This work proposes a new approach to determine the spatial location and orientation of an object using measurements performed on the object itself. The on-board triangulation algorithm we outline could be implemented in lieu of, or in addition to, well-known alternatives such as Global Positioning System (GPS) or standard triangulation, since both of these correspond to significantly different geometric pictures and necessitate different hardware and algorithms. We motivate the theory by describing situations in which on-board triangulation would be useful and even preferable to standard methods...
2017: PloS One
https://www.readbyqxmd.com/read/28639253/ultrasonography-in-trauma-a-nation-wide-cross-sectional-investigation
#19
Jesper Weile, Klaus Nielsen, Stine C Primdahl, Christian A Frederiksen, Christian B Laursen, Erik Sloth, Hans Kirkegaard
BACKGROUND: The Focused Assessment with Sonography in Trauma (FAST) protocol is considered beneficial in emergent evaluation of trauma patients with blunt or penetrating injury and has become integrated into the Advanced Trauma Life Support (ATLS) protocol. No guidelines exist as to the use of ultrasonography in trauma in Denmark. We aimed to determine the current use of ultrasonography for assessing trauma patients in Denmark. METHODS: We conducted a nation-wide cross-sectional investigation of ultrasonography usage in trauma care...
December 2017: Critical Ultrasound Journal
https://www.readbyqxmd.com/read/28638890/inhibitory-effect-of-chitosan-oligosaccharide-on-human-hepatoma-cells-in-vitro
#20
Likun Liu, Yi Xin, Jia Liu, Ershao Zhang, Weiling Li
BACKGROUND: Chitosan oligosaccharide, the degradation products of chitin, was reported to have a wide range of physiological functions and biological activities. In this study, we explored the inhibitory effect of Chitosan oligosaccharide on human hepatoma cells. MATERIALS AND METHODS: MTT assay was applied to detect cell viability of the human hepatoma cells treated with Chitosan oligosaccharide. Flow cytometric analysis was used to investigate the apoptosis of the human hepatoma cells treated with Chitosan oligosaccharide...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
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