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https://www.readbyqxmd.com/read/28938601/mutation-profile-based-methods-for-understanding-selection-forces-in-cancer-somatic-mutations-a-comparative-analysis
#1
Zhan Zhou, Yangyun Zou, Gangbiao Liu, Jingqi Zhou, Jingcheng Wu, Shimin Zhao, Zhixi Su, Xun Gu
Human genes exhibit different effects on fitness in cancer and normal cells. Here, we present an evolutionary approach to measure the selection pressure on human genes, using the well-known ratio of the nonsynonymous to synonymous substitution rate in both cancer genomes (CN /CS ) and normal populations (pN /pS ). A new mutation-profile-based method that adopts sample-specific mutation rate profiles instead of conventional substitution models was developed. We found that cancer-specific selection pressure is quite different from the selection pressure at the species and population levels...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938521/beneficial-health-applications-and-medicinal-values-of-pedicularis-plants-a-review
#2
REVIEW
Mohd Iqbal Yatoo, Umesh Dimri, Arumugam Gopalakrishnan, Kumaragurubaran Karthik, Marappan Gopi, Rekha Khandia, Mani Saminathan, Archana Saxena, Mahmoud Alagawany, Mayada Ragab Farag, Ashok Munjal, Kuldeep Dhama
Pedicularis plants (Orobanchaceae), popularly known as lousewort, are found in Asia, Europe, and North America, and have been used in Sowa-Rigpa, the Himalayan art of healing and a traditional system of medicine for treating various ailments in humans. A comprehensive compilation on this valuable medicinal plant is not available, however. The present extensive review provides insight into the salient medicinal properties of Pedicularis plants with respect to various health issues and diseases. Our previous studies on Pedicularis plants from the Changthang region of Ladakh (India) and research advances leading to new developments in this field have prompted this review...
September 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28938516/naturally-occurring-anthocyanin-cyanidin-3-rutinoside-possesses-inherent-vasorelaxant-actions-and-prevents-methylglyoxal-induced-vascular-dysfunction-in-rat-aorta-and-mesenteric-arterial-bed
#3
Thavaree Thilavech, Mahinda Y Abeywardena, Michael Adams, Julie Dallimore, Sirichai Adisakwattana
Cyanidin-3-rutinoside (C3R) possesses anti-oxidant, anti-inflammatory and anti-glycation properties. Methylglyoxal (MG), a highly reactive dicarbonyl aldehyde by-product of glycolysis, is a precursor of advanced glycation end products and contributes to vascular dysfunction, particularly during hyperglycemia. We investigated the possible inherent vasoactivity of C3R, and its effectiveness against MG-induced vascular abnormalities in isolated blood vessel preparations from male Wistar Kyoto rat. C3R induced vasorelaxation concentration-dependently in aortic rings (92% maximum relaxation; EC50: 2...
September 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28938418/androgens-support-male-acrobatic-courtship-behavior-by-enhancing-muscle-speed-and-easing-the-severity-of-its-trade-off-with-force
#4
Matthew J Fuxjager, Meredith C Miles, Franz Goller, John Petersen, Julia Yancey
Steroid hormone action in the brain regulates many animals' elaborate social displays used for courtship and competition, but it is increasingly recognized that the periphery may also be a site for potent steroidal modulation of complex behavior. However, the mechanisms of such "bottom up" regulation of behavioral outflow are largely unclear. To study this problem, we examine how androgenic sex hormones act through the skeletal muscular system to mediate elaborate courtship acrobatics in a tropical bird called the golden-collared manakin...
August 29, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938135/bang-bang-optimal-control-of-large-spin-systems-enhancement-of-13-c-13-c-singlet-order-at-natural-abundance
#5
Deepak Khurana, T S Mahesh
Using a bang-bang optimal control technique, we transfer polarization from a set of abundant high-γ nuclei directly to singlet order of a low-γ spin-pair. This approach is analogous to algorithmic cooling (AC) procedure used in quantum state purification. Specifically, we apply this method for enhancing the singlet order in a natural abundant (13)C- (13)C spin pair by exploiting nine equivalent protons of an 11-spin system. Compared to the standard method not involving polarization transfer, we find an enhancement of singlet order by about 3...
September 14, 2017: Journal of Magnetic Resonance
https://www.readbyqxmd.com/read/28938134/long-lived-states-detect-interactions-between-small-molecules-and-diamagnetic-metal-ions
#6
Cristina Stavarache, Anamaria Hanganu, Anca Paun, Codruta Paraschivescu, Mihaela Matache, Paul R Vasos
Long-lived states of nuclear spin order were used for the first time to probe interactions between molecules and diamagnetic metal ions. Proton spin states with lifetimes twice as long as the spin-lattice relaxation time constants of the same nuclei were promoted on the methoxyphenyl and tolyl substituents of a 1,3,4-oxadiazole derivative. The transient interaction of this oxadiazole derivative with silver(I) ions significantly speeds up the relaxation rate constants of proton long-lived states. The interactions between silver and organic compounds lead to the formation of coordination polymers that can be used for the preparation of bio-compatible materials...
September 6, 2017: Journal of Magnetic Resonance
https://www.readbyqxmd.com/read/28937530/effects-of-magnesium-chloride-on-rocuronium-induced-neuromuscular-blockade-and-sugammadex-reversal-in-an-isolated-rat-phrenic-nerve-hemidiaphragm-preparation-an-in-vitro-study
#7
Tae-Yun Sung, Hwang-Ju You, Choon-Kyu Cho, Hey Ran Choi, Yong Beom Kim, Yong Sup Shin, Hong Seuk Yang
BACKGROUND: Magnesium potentiates the effects of nondepolarising muscle relaxants. However, few studies have used magnesium chloride (MgCl2). Sugammadex reverses neuromuscular block by steroidal nondepolarising muscle relaxants. OBJECTIVES: To assess the effects of MgCl2 on rocuronium-induced neuromuscular blockade and its reversal by sugammadex. DESIGN: In-vitro experimental study. SETTING: Animal laboratory, Asan Medical Center, Seoul, South Korea, from 20 March 2016 to 3 April 2016...
September 20, 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28937449/persistent-encopresis-enuresis-and-anxiety-in-a-7-year-old-girl
#8
Theodora Nelson, Heekyung Chae, Ran D Anbar, Martin T Stein
Sonia is a 7-year-old old girl who was referred to the Developmental-Behavioral Pediatrics Clinic by the Pediatric Urology Clinic because of persistent wetting and soiling behaviors. Since age 3 years, she has had a history of encopresis (and wetting) for which she has seen gastroenterology and urology specialists. The mother reports that Sonia has accidents almost daily, and she is not upset when sitting in her urine or feces. She dislikes going into the bathroom or sitting on the toilet by herself. She participated in a behavior modification program associated with the pediatric urology clinic, which helps children learn healthy voiding habits and achieve continence...
September 19, 2017: Journal of Developmental and Behavioral Pediatrics: JDBP
https://www.readbyqxmd.com/read/28937442/orally-active-epoxyeicosatrienoic-acid-analogs
#9
William B Campbell, John D Imig, James M Schmitz, John R Falck
Biologically active epoxyeicosatrienoic acid (EET) regioisomers are synthesized from arachidonic acid by cytochrome P450 epoxygenases of endothelial, myocardial, and renal tubular cells. EETs relax vascular smooth muscle and decrease inflammatory cell adhesion and cytokine release. Renal EETs promote sodium excretion and vasodilation to decrease hypertension. Cardiac EETs reduce infarct size after ischemia-reperfusion injury and decrease fibrosis and inflammation in heart failure. In diabetes, EETs improve insulin sensitivity, increase glucose tolerance, and reduce the renal injury...
September 19, 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/28937175/chiral-six-coordinate-dy-iii-and-tb-iii-complexes-of-an-achiral-ligand-structure-fluorescence-and-magnetism
#10
Mei-Jiao Liu, Juan Yuan, Yi-Quan Zhang, Hao-Ling Sun, Cai-Ming Liu, Hui-Zhong Kou
Two new chiral six-coordinate lanthanide complexes (1 for Dy and 2 for Tb) have been synthesized using the achiral flexible ligand H2L (2,2'-[1,2-ethanediylbis[(methylimino)methylene]]bis[4,5-dimethylphenol]). Both complexes crystallize in the chiral P1 group space, and the enantiomers [Zn(L)Cl]3Dy·MeOH·0.5H2O (Λ-1), [Zn(L)Cl]3Dy·1.5H2O (Δ-1), [Zn(L)Cl]3Tb·1.5H2O (Λ-2) and [Zn(L)Cl]3Tb·H2O (Δ-2) are isolated in the reaction. Three [Zn(L)Cl](-) anions coordinate to the central lanthanide ion using two phenoxo oxygen atoms of L(2-), and the lanthanide ion has the coordination geometry of D3...
September 22, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28937171/unprecedented-family-of-heterometallic-ln-iii-18-metallacrown-6-complexes-syntheses-structures-and-magnetic-properties
#11
Wei Yang, Hua Yang, Su-Yuan Zeng, Da-Cheng Li, Jian-Min Dou
Herein, a new family of Ln(III)[18-metallacrown-6] compounds with the formula [Fe6O2Ln(tBu-sao)6(OH)(MeO)4(MeOH)(H2O)]·6MeOH [Ln = Dy(III) (1), Tb(III) (2), Gd(III) (3), and Y(III) (4), tBu-saoH2 = 3,5-di-tert-butylsalicylaldoxime] was synthesized through one-pot reactions using tBu-saoH2, Fe(ClO4)3·6H2O, and Ln(NO3)3·6H2O. The four compounds are isostructural, and the encapsulation of a Ln ion in the ring cavity of 18-metallacrown-6 (18-MC-6) was exhibited for the first time. The structural analysis shows a ship-like 18-MC-6 core with a beset lanthanide ion connecting six ring oxygen atoms (OMC)...
September 22, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28936889/t2-relaxometry-mapping-in-demonstrating-layered-uterine-architecture-parameter-optimisation-and-utility-in-endometrial-carcinoma-and-adenomyosis-a-feasibility-study
#12
Adarsh Ghosh, Tulika Singh, Rashmi Bagga, Radhika Srinivasan, Veenu Singhla, Niranjan Khandelwal
OBJECTIVE: We evaluate the feasibility of t2 mapping of the uterus and demonstrate its diagnostic utility in endometrial carcinoma and adenomyosis and discuss the optimum imaging parameters as used in our institute. METHOD: Institute review board approval was obtained and multi spin echo imaging of the pelvic was done with variable time to echo in three patients, two with endometrial carcinoma and one with adenomyosis. T2 parametric maps and curves were plotted and the T2 times of the disease endometrium, superficial and deep myometrium were established...
September 22, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28936613/chronic-inflammatory-demyelinating-polyradiculoneuropathy-and-anesthesia-a-case-series
#13
Andrew R Mortenson, Juraj Sprung, James C Watson, P James B Dyck, Toby N Weingarten
Chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) is an acquired autoimmune demyelinating polyneuropathy characterized by symmetrical diffuse weakness that also can rarely affect bulbar and respiratory muscles. The study objective was to describe perioperative outcomes of patients with CIDP who received general anesthesia. This retrospective observational study evaluated patients with active (diagnosed or treated within the previous year) CIDP who underwent general anesthesia at our institution between January 1, 2010, and December 31, 2015...
September 21, 2017: Acta Neurologica Belgica
https://www.readbyqxmd.com/read/28935973/scaling-of-memories-and-crossover-in-glassy-magnets
#14
A M Samarakoon, M Takahashi, D Zhang, J Yang, N Katayama, R Sinclair, H D Zhou, S O Diallo, G Ehlers, D A Tennant, S Wakimoto, K Yamada, G-W Chern, T J Sato, S-H Lee
Glassiness is ubiquitous and diverse in characteristics in nature. Understanding their differences and classification remains a major scientific challenge. Here, we show that scaling of magnetic memories with time can be used to classify magnetic glassy materials into two distinct classes. The systems studied are high temperature superconductor-related materials, spin-orbit Mott insulators, frustrated magnets, and dilute magnetic alloys. Our bulk magnetization measurements reveal that most densely populated magnets exhibit similar memory behavior characterized by a relaxation exponent of [Formula: see text]...
September 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28935897/a-gateway-towards-non-collinear-spin-processing-using-three-atom-magnets-with-strong-substrate-coupling
#15
J Hermenau, J Ibañez-Azpiroz, Chr Hübner, A Sonntag, B Baxevanis, K T Ton, M Steinbrecher, A A Khajetoorians, M Dos Santos Dias, S Blügel, R Wiesendanger, S Lounis, J Wiebe
A cluster of a few magnetic atoms on the surface of a nonmagnetic substrate is one suitable realization of a bit for spin-based information technology. The prevalent approach to achieve magnetic stability is decoupling the cluster spin from substrate conduction electrons in order to suppress destabilizing spin-flips. However, this route entails less flexibility in tailoring the coupling between the bits needed for spin-processing. Here, we use a spin-resolved scanning tunneling microscope to write, read, and store spin information for hours in clusters of three atoms strongly coupled to a substrate featuring a cloud of non-collinearly polarized host atoms, a so-called non-collinear giant moment cluster...
September 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/28935526/characterization-of-calcium-transients-during-early-embryogenesis-in-the-ascidian-ciona-robusta-ciona-intestinalis-type-a-and-ciona-savignyi
#16
Taichi Akahoshi, Kohji Hotta, Kotaro Oka
The calcium ion (Ca(2+)) is an important second messenger, and a rapid increase in Ca(2+) level (Ca(2+) transient) is involved in various aspects of embryogenesis. Although Ca(2+) transients play an important role in early developmental stages, little is known about the dynamics of Ca(2+) transients throughout embryogenesis. Here, Ca(2+) transients were characterized by visualizing Ca(2+) dynamics in developing chordate embryos using a fluorescent protein-based Ca(2+) indicator, GCaMP6s in combination with finely tuned microscopy...
September 18, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28935371/a-sir2-family-protein-rv1151c-deacetylates-hu-to-alter-its-dna-binding-mode-in-mycobacterium-tuberculosis
#17
Chinmay Anand, Rajni Garg, Soumitra Ghosh, Valakunja Nagaraja
Till recently, knowledge about epigenetic regulation in bacterial world confined largely to DNA methylation. Lysine acetylation/deacetylation of histones is a major contributor for chromatin dynamics in eukaryotes. However, little is known about such epigenetic changes brought about by post-translational modifications in bacteria. Here, we describe an example of such mechanism occurring in a histone like protein, HU from Mycobacterium tuberculosis (Mtb). Previously, we demonstrated the interaction and acetylation of Mtb HU (MtHU) by one of the acetyl transferases, Eis...
September 18, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28935239/te-dependent-diffusion-imaging-teddi-distinguishes-between-compartmental-t2-relaxation-times
#18
Jelle Veraart, Dmitry S Novikov, Els Fieremans
Biophysical modeling of macroscopic diffusion-weighted MRI (dMRI) signal in terms of microscopic cellular parameters holds the promise of quantifying the integrity of white matter. Unfortunately, even fairly simple multi-compartment models of proton diffusion in the white matter do not provide a unique, biophysically plausible solution. Here we report a nontrivial diffusion MRI signal dependence on echo time (TE) in human white matter in vivo. We demonstrate that such TE dependence originates from compartment-specific T2 values and that it is a promising "orthogonal measure" able to break the degeneracy in parameter estimation, and to yield important relaxation metrics robustly...
September 18, 2017: NeuroImage
https://www.readbyqxmd.com/read/28935225/heart-rate-variability-biofeedback-and-other-psychophysiological-procedures-as-important-elements-in-psychotherapy
#19
REVIEW
Paul Lehrer
Lang's distinction of psychophysiological, behavioral, and cognitive domains in psychological problems and therapies provides a useful heuristic for guiding psychotherapy. Much psychotherapy practice emphasizes the cognitive domain, but behavioral and psychophysiological interventions show at least equivalent effectiveness for some kinds of problems. Most descriptions of cognitive behavior therapy emphasize cognitive procedures, although most CBT approaches also incorporate behavioral interventions such as social skills training, exposure, and behavior activation...
September 18, 2017: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/28935153/load-dependent-effects-of-apelin-on-murine-cardiomyocytes
#20
Remi Peyronnet, Christian Bollensdorff, Rebecca A Capel, Eva A Rog-Zielinska, Christopher E Woods, David N Charo, Oleg Lookin, Giovanni Fajardo, Michael Ho, Thomas Quertermous, Euan A Ashley, Peter Kohl
The apelin peptide is described as one of the most potent inotropic agents, produced endogenously in a wide range of cells, including cardiomyocytes. Despite positive effects on cardiac contractility in multicellular preparations, as well as indications of cardio-protective actions in several diseases, its effects and mechanisms of action at the cellular level are incompletely understood. Here, we report apelin effects on dynamic mechanical characteristics of single ventricular cardiomyocytes, isolated from mouse models (control, apelin-deficient [Apelin-KO], apelin-receptor KO mouse [APJ-KO]), and rat...
September 18, 2017: Progress in Biophysics and Molecular Biology
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