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https://www.readbyqxmd.com/read/28217413/deformation-response-of-the-iliotibial-band-tensor-fascia-lata-complex-to-clinical-grade-longitudinal-tension-loading-in-vitro
#1
Mark Wilhelm, Omer Matthijs, Kevin Browne, Gesine Seeber, Anja Matthijs, Phillip S Sizer, Jean-Michel Brismée, C Roger James, Kerry K Gilbert
BACKGROUND: Iliotibial Band (ITB) syndrome is a troublesome condition with prevalence as high as 12% in runners. Stretching has been utilized as a conservative treatment. However, there is limited evidence supporting ITB elongation in response to a stretching force. PURPOSE/HYPOTHESES: The purpose of this study was to describe the iliotibial band tensor fascia lata complex (ITBTFLC) tissue elongation response to a simulated clinical stretch in-vitro. The authors hypothesized that the ITBTFLC would undergo statistically significant elongation when exposed to a clinical-grade stretching regimen, with the majority of the elongation occurring within the proximal ITBTFLC region...
February 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28177605/replication-protein-a-prohibits-diffusion-of-the-pcna-sliding-clamp-along-single-stranded-dna
#2
Mark Hedglin, Stephen J Benkovic
The replicative polymerases cannot accommodate distortions to the native DNA sequence such as modifications (lesions) to the native template bases from exposure to reactive metabolites and environmental mutagens. Consequently, DNA synthesis on an afflicted template abruptly stops upon encountering these lesions but the replication fork progresses onward, exposing long stretches of the damaged template before eventually stalling. Such arrests may be overcome by translesion DNA synthesis where a specialized TLS polymerases binds to the resident PCNA and replicates the damaged DNA...
February 8, 2017: Biochemistry
https://www.readbyqxmd.com/read/28167188/the-effect-of-kinesio-taping-versus-stretching-techniques-on-muscle-soreness-and-flexibility-during-recovery-from-nordic-hamstring-exercise
#3
Tarik Ozmen, Gokce Yagmur Gunes, Hanife Dogan, Ilyas Ucar, Mark Willems
The purpose of this study was to examine the effects of static stretching, proprioceptive neuromuscular facilitation (PNF) stretching, or kinesio taping (KT) on muscle soreness and flexibility during recovery from exercise. Sixty-five females were randomly assigned to four groups: PNF stretching (n = 15), static stretching (n = 16), KT (n = 17), and control (n = 17). All participants performed nordic hamstring exercise (5 sets of 8 repetitions). In all groups, hamstring flexibility at 24 h and 48 h was not changed from baseline (p > ...
January 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28167182/calf-stretching-in-correct-alignment-an-important-consideration-in-plantar-fasciopathies
#4
Mark Silvester
Stretching of the calf muscles is important in the treatment of plantar fasciopathy. In order to correctly stretch the calf muscles without strain on the plantar fascia the correct alignment of the lower limb should be maintained. A clinical method of achieving this is presented along with a practical guide to assisting the patient to become familiar with correct lower limb alignment.
January 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28160014/the-incidence-and-clinical-outcomes-of-peroneal-nerve-injuries-associated-with-posterolateral-corner-injuries-of-the-knee
#5
T J Ridley, Mark A McCarthy, Matthew J Bollier, Brian R Wolf, Annunziato Amendola
PURPOSE: The purpose of the study was to investigate the incidence of complete and partial peroneal nerve injuries in patients with posterolateral corner (PLC) knee injuries; additionally, to compare patient-reported outcomes among patients with and without peroneal nerve injury and to examine the factors that predict the recovery of nerve function. METHODS: A retrospective chart review was performed to identify patients who underwent PLC reconstruction or repair from 2000 to 2012 with a minimum 6-month clinical follow-up...
February 3, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28132686/decreased-stard10-expression-is-associated-with-defective-insulin-secretion-in-humans-and-mice
#6
Gaelle R Carrat, Ming Hu, Marie-Sophie Nguyen-Tu, Pauline Chabosseau, Kyle J Gaulton, Martijn van de Bunt, Afshan Siddiq, Mario Falchi, Matthias Thurner, Mickaël Canouil, Francois Pattou, Isabelle Leclerc, Timothy J Pullen, Matthew C Cane, Priyanka Prabhala, William Greenwald, Anke Schulte, Piero Marchetti, Mark Ibberson, Patrick E MacDonald, Jocelyn E Manning Fox, Anna L Gloyn, Philippe Froguel, Michele Solimena, Mark I McCarthy, Guy A Rutter
Genetic variants near ARAP1 (CENTD2) and STARD10 influence type 2 diabetes (T2D) risk. The risk alleles impair glucose-induced insulin secretion and, paradoxically but characteristically, are associated with decreased proinsulin:insulin ratios, indicating improved proinsulin conversion. Neither the identity of the causal variants nor the gene(s) through which risk is conferred have been firmly established. Whereas ARAP1 encodes a GTPase activating protein, STARD10 is a member of the steroidogenic acute regulatory protein (StAR)-related lipid transfer protein family...
February 2, 2017: American Journal of Human Genetics
https://www.readbyqxmd.com/read/28128685/scar-remodeling-with-the-association-of-monopolar-capacitive-radiofrequency-electric-stimulation-and-negative-pressure
#7
Giovanni Nicoletti, Paola Perugini, Sara Bellino, Priscilla Capra, Alberto Malovini, Omar Jaber, Marco Tresoldi, Angela Faga
OBJECTIVE: A study was established to objectively assess the effects of low-intensity electromagnetic and electric stimulation plus negative pressure on mature scars. BACKGROUND: Radiofrequency plus negative pressure therapy demonstrated a favorable reorganization and regeneration of the collagen and elastic fibers and was proposed for the treatment of cellulitis and skin stretch marks. METHODS: Twenty-six mature scars in 20 Caucasian patients (15 females and 5 males) were enrolled in the study...
January 24, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28112683/blood-pressure-associated-polymorphism-controls-arhgap42-expression-via-serum-response-factor-dna-binding
#8
Xue Bai, Kevin D Mangum, Rachel A Dee, George A Stouffer, Craig R Lee, Akinyemi Oni-Orisan, Cam Patterson, Jonathan C Schisler, Anthony J Viera, Joan M Taylor, Christopher P Mack
We recently demonstrated that selective expression of the Rho GTPase-activating protein ARHGAP42 in smooth muscle cells (SMCs) controls blood pressure by inhibiting RhoA-dependent contractility, providing a mechanism for the blood pressure-associated locus within the ARHGAP42 gene. The goals of the current study were to identify polymorphisms that affect ARHGAP42 expression and to better assess ARHGAP42's role in the development of hypertension. Using DNase I hypersensitivity methods and ENCODE data, we have identified a regulatory element encompassing the ARHGAP42 SNP rs604723 that exhibits strong SMC-selective, allele-specific activity...
February 1, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28110118/supporting-fingerprint-identification-assessments-using-a-skin-stretch-model-a-preliminary-study
#9
Rebecca Lee, Bruce Comber, Joshua Abraham, Michael Wagner, Chris Lennard, Xanthe Spindler, Claude Roux
To support fingerprint expert opinion, this research proposes an approach that combines subjective human analysis (as currently applied by fingerprint practitioners) with a statistical test of the result. This approach relies on the hypothesis that there are limits to the distortion caused by skin stretch. Such limits can be modelled by applying a multivariate normal probability density function to the distances and angle formed by a marked ridge characteristic and the two closest neighbouring minutiae. This study presents a model tested on 5 donors in total...
January 5, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28094753/quantifying-cutaneous-adverse-effects-of-systemic-glucocorticoids-in-patients-with-rheumatoid-arthritis-a-cross-sectional-cohort-study
#10
Jonna Amann, Anne-Marie Wessels, Friederike Breitenfeldt, Dörte Huscher, Johannes W J Bijlsma, Johannes W G Jacobs, Frank Buttgereit
OBJECTIVES: EULAR guidelines state that adverse effects (AEs) of glucocorticoid (GC) therapy should be considered and discussed with the patient before treatment is initiated. However, reliable quantitative data, especially on cutaneous AEs of low-to-medium dose GCs are lacking. We performed a study assessing the occurrence of cutaneous AEs of GCs and its association with current and cumulative GC doses in patients with rheumatoid arthritis (RA). METHODS: In a cross-sectional study performed in 2 outpatient rheumatology centres, 381 RA patients were enrolled...
January 15, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28079757/pathogenesis-of-abdominal-pain-in-bowel-obstruction-role-of-mechanical-stress-induced-upregulation-of-nerve-growth-factor-in-gut-smooth-muscle-cells
#11
You-Min Lin, Yu Fu, John Winston, Ravi Radhakrishnan, Sushil K Sarna, Li-Yen M Huang, Xuan-Zheng Shi
Abdominal pain is one of the major symptoms in bowel obstruction (BO); its cellular mechanisms remain incompletely understood. We tested the hypothesis that mechanical stress in obstruction upregulates expression of nociception mediator nerve growth factor (NGF) in gut smooth muscle cells (SMC), and NGF sensitizes primary sensory nerve to contribute to pain in BO. Partial colon obstruction was induced with a silicon band implanted in the distal bowel of Sprague-Dawley rats. Colon-projecting sensory neurons in the dorsal root ganglia (DRG, T13 to L2) were identified for patch clamp and gene expression studies...
January 6, 2017: Pain
https://www.readbyqxmd.com/read/28060510/coordination-dependent-spectroscopic-signatures-of-divalent-metal-ion-binding-to-carboxylate-head-groups-h2-and-he-tagged-vibrational-spectra-of-m-2-%C3%A2-rco2%C3%A2-m-mg-and-ca-r-cd3-cd2cd3-complexes
#12
Joseph W DePalma, Patrick J Kelleher, Laís C Tavares, Mark A Johnson
We explore the intramolecular distortions present in divalent metal ion-carboxylate ion pairs using vibrational spectroscopy of the cryogenically cooled, mass-selected species isolated in the gas phase. The spectral signatures of the C-O stretching modes are identified using the perdeutero isotopologues of the acetate and propionate anions to avoid congestion arising from the CH2 fundamentals. Both Ca(2+) and Mg(2+) are observed to bind in a symmetrical, so-called "bidentate" arrangement to the -CO2¯ group...
January 19, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28045545/multistep-oxidation-of-diethynyl-oligophenylamine-bridged-diruthenium-and-diiron-complexes
#13
Jing Zhang, Shen-Zhen Guo, Yu-Bao Dong, Li Rao, Jun Yin, Guang-Ao Yu, František Hartl, Sheng Hua Liu
Homo-dinuclear nonlinear complexes [{M(dppe)Cp*}2{μ-(-C≡C)2X}] (dppe = 1,2-bis(diphenylphosphino)ethane; Cp* = η(5)-C5Me5; X = triphenylamine (TPA), M = Ru (1a) and Fe (1b); X = N,N,N',N'-tetraphenylphenylene-1,4-diamine (TPPD), M = Ru (2a)) were prepared and characterized by (1)H, (13)C, and (31)P NMR spectroscopy and single-crystal X-ray diffraction (1a, 2a). Attempts to prepare the diiron analogue of 2a were not successful. Experimental data obtained from cyclic voltammetry, square wave voltammetry, UV-vis-NIR (NIR = near-infrared) spectro-electrochemistry, and very informative IR spectro-electrochemistry in the C≡C stretching region, combined with density functional theory calculations, afford to make an emphasizing assessment of the close association between the metal-ethynyl termini and the oligophenylamine bridge core as well as their respective involvement in sequential one-electron oxidations of these complexes...
January 3, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28034301/mechanistic-differences-between-hiv-1-and-siv-nucleocapsid-proteins-and-cross-species-hiv-1-genomic-rna-recognition
#14
Klara Post, Erik D Olson, M Nabuan Naufer, Robert J Gorelick, Ioulia Rouzina, Mark C Williams, Karin Musier-Forsyth, Judith G Levin
BACKGROUND: The nucleocapsid (NC) domain of HIV-1 Gag is responsible for specific recognition and packaging of genomic RNA (gRNA) into new viral particles. This occurs through specific interactions between the Gag NC domain and the Psi packaging signal in gRNA. In addition to this critical function, NC proteins are also nucleic acid (NA) chaperone proteins that facilitate NA rearrangements during reverse transcription. Although the interaction with Psi and chaperone activity of HIV-1 NC have been well characterized in vitro, little is known about simian immunodeficiency virus (SIV) NC...
December 29, 2016: Retrovirology
https://www.readbyqxmd.com/read/28024423/molecular-phylogenetic-study-on-few-morphotypes-of-a-patellogastropod-cellana-karachiensis-from-northern-arabian-sea-reveals-unexpected-genetic-diversity
#15
Sneha Joseph, Bhavik Vakani, Rahul Kundu
A group of limpets, Cellana karachiensis, exhibiting phenotypic plasticity were examined from Gujarat coastline India, using molecular phylogeny. Previous examination of the COI genes established the presence of three different haplotypes X, Y and Z, while present study showed three more haplotypes X1, X2 and Z1. Thus, a total of six COI gene haplotypes, having 99.23% to 99.85% sequence similarity, were observed with variations at six sites. Bayesian phylogenetic analysis shows divergence of lineages X-Y, X1-X2 and Z-Z1...
December 26, 2016: Mitochondrial DNA. Part A. DNA Mapping, Sequencing, and Analysis
https://www.readbyqxmd.com/read/28010076/communication-trapping-a-proton-in-argon-spectroscopy-and-theory-of-the-proton-bound-argon-dimer-and-its-solvation
#16
D C McDonald, D T Mauney, D Leicht, J H Marks, J A Tan, J-L Kuo, M A Duncan
Ion-molecule complexes of the form H(+)Arn are produced in pulsed-discharge supersonic expansions containing hydrogen and argon. These ions are analyzed and mass-selected in a reflectron spectrometer and studied with infrared laser photodissociation spectroscopy. Infrared spectra for the n = 3-7 complexes are characterized by a series of strong bands in the 900-2200 cm(-1) region. Computational studies at the MP2/aug-cc-pVTZ level examine the structures, binding energies, and infrared spectra for these systems...
December 21, 2016: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28003951/a-soft-stretchable-bending-sensor-and-data-glove-applications
#17
Zhong Shen, Juan Yi, Xiaodong Li, Mark Hin Pei Lo, Michael Z Q Chen, Yong Hu, Zheng Wang
Soft sensors are required to accommodate the flexible and deformable natures of the human body in wearable device applications. They are also suitable for integration with soft robotic devices to monitor the performance status and provide references for feedback control. However, the choices for bending sensors are still highly limited. In this paper, a soft bending sensor is presented. By careful design with a blend of sensitive and insensitive regions, the sensor could be stretchable while being insensitive to stretching...
2016: Robotics and Biomimetics
https://www.readbyqxmd.com/read/27959859/type-1-diabetes-prevention-a-goal-dependent-on-accepting-a-diagnosis-of-an-asymptomatic-disease
#18
Anette-G Ziegler, Ezio Bonifacio, Alvin C Powers, John A Todd, Leonard C Harrison, Mark A Atkinson
Type 1 diabetes, a disease defined by absolute insulin deficiency, is considered a chronic autoimmune disorder resulting from the destruction of insulin-producing pancreatic β-cells. The incidence of childhood-onset type 1 diabetes has been increasing at a rate of 3%-5% per year globally. Despite the introduction of an impressive array of therapies aimed at improving disease management, no means for a practical "cure" exist. This said, hope remains high that any of a number of emerging technologies (e.g., continuous glucose monitoring, insulin pumps, smart algorithms), alongside advances in stem cell biology, cell encapsulation methodologies, and immunotherapy, will eventually impact the lives of those with recently diagnosed or established type 1 diabetes...
November 2016: Diabetes
https://www.readbyqxmd.com/read/27934761/spectroscopic-snapshots-of-the-proton-transfer-mechanism-in-water
#19
Conrad T Wolke, Joseph A Fournier, Laura C Dzugan, Matias R Fagiani, Tuguldur T Odbadrakh, Harald Knorke, Kenneth D Jordan, Anne B McCoy, Knut R Asmis, Mark A Johnson
The Grotthuss mechanism explains the anomalously high proton mobility in water as a sequence of proton transfers along a hydrogen-bonded (H-bonded) network. However, the vibrational spectroscopic signatures of this process are masked by the diffuse nature of the key bands in bulk water. Here we report how the much simpler vibrational spectra of cold, composition-selected heavy water clusters, D(+)(D2O)n, can be exploited to capture clear markers that encode the collective reaction coordinate along the proton-transfer event...
December 2, 2016: Science
https://www.readbyqxmd.com/read/27923110/impact-of-oligonucleotide-structure-chemistry-and-delivery-method-on-in-vitro-cytotoxicity
#20
Maja M Janas, Yongfeng Jiang, Mark K Schlegel, Scott Waldron, Satya Kuchimanchi, Scott A Barros
Single-stranded (ss) 2'-fluoro (2'-F)-modified oligonucleotides (ONs) with a full phosphorothioate (PS) backbone have been reported to be cytotoxic and cause DNA double-strand breaks (DSBs) when transfected into HeLa cells. However, the molecular determinants of these effects have not been fully explored. In this study, we investigated the impact of ON structure, chemistry, delivery method, and cell type on in vitro cytotoxicity and DSBs. We found that ss PS-ONs were more cytotoxic than double-stranded (ds) PS-ONs, irrespective of the 2'-ribose chemistry, inclusive of the 2'-F modification...
February 2017: Nucleic Acid Therapeutics
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