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https://www.readbyqxmd.com/read/27913423/bronchodilatory-effect-of-deep-inspiration-in-freshly-isolated-sheep-lungs
#1
William D Wong, Lu Wang, Peter D Paré, Chun Y Seow
Taking a big breath is known to reverse bronchoconstriction induced by bronchochallenge in healthy subjects; this bronchodilatory effect of deep inspiration (DI) is diminished in asthmatics. The mechanism underlying the DI effect is not clear. Observations from experiments using isolated airway smooth muscle (ASM) preparations and airway segments suggest that straining of ASM due to DI could lead to bronchodilation, possibly due to strain-induced reduction in ASM contractility. However, factors external to the lung cannot be excluded as potential causes for the DI effect...
December 2, 2016: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/27909987/orexin-ox2-receptor-antagonists-as-sleep-aids
#2
Laura H Jacobson, Sui Chen, Sanjida Mir, Daniel Hoyer
The discovery of the orexin system represents the single major progress in the sleep field of the last three to four decades. The two orexin peptides and their two receptors play a major role in arousal and sleep/wake cycles. Defects in the orexin system lead to narcolepsy with cataplexy in humans and dogs and can be experimentally reproduced in rodents. At least six orexin receptor antagonists have reached Phase II or Phase III clinical trials in insomnia, five of which are dual orexin receptor antagonists (DORAs) that target both OX1 and OX2 receptors (OX2Rs)...
December 2, 2016: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/27908413/trace-element-and-cytokine-concentrations-in-patients-with-fibrodysplasia-ossificans-progressiva-fop-a-case-control-study
#3
Laura Hildebrand, Timo Gaber, Peter Kühnen, Rolf Morhart, Heinz Unterbörsch, Lutz Schomburg, Petra Seemann
Fibrodysplasia Ossificans Progressiva (FOP) is a rare inherited disease characterized by progressive heterotopic ossification. Disease onset, severity and symptoms vary between FOP patients, as does the frequency and activity of so-called flare-ups, during which tendons, ligaments, muscle and soft tissue are replaced by bone. Traumata, infections or other stressors are known inducers of flare-ups, and the hormone Activin A may be involved in disease activity; however, reliable biomarkers for FOP activity are missing, and the basal trace element and inflammatory state of patients are unknown...
January 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/27893000/association-between-benzodiazepine-receptor-agonists-and-snoring-among-women-in-the-nurses-health-study
#4
Brian M Lin, Frank B Hu, Gary C Curhan
Importance: Snoring is highly prevalent among adults. The use of benzodiazepine receptor agonists is also common, with higher prevalence of use with more advanced age. Benzodiazepine receptor agonists cause muscle relaxation, which may affect muscle tone and airway dynamics and thereby increase snoring. Previous studies examining the association between use of benzodiazepine receptor agonists and snoring were underpowered to detect clinically meaningful differences or did not report the magnitude of association...
November 17, 2016: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/27882697/biomechanical-properties-of-an-implanted-engineered-tubular-gut-sphincter-complex
#5
Elie Zakhem, Mostafa El Bahrawy, Giuseppe Orlando, Khalil N Bitar
Neuromuscular diseases of the gut alter the normal motility patterns. Although surgical intervention remains the standard treatment, preservation of the sphincter attached to the rest of the gut is challenging. The present study aimed to evaluate a bioengineered gut-sphincter complex following its subcutaneous implantation for 4 weeks in rats. Engineered innervated human smooth muscle sheets and innervated human sphincters with a predefined alignment were placed around tubular scaffolds to create a gut-sphincter complex...
November 23, 2016: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/27876723/-stability-of-orthodontic-correction-preconditions-of-relapses-caused-by-occlusal-forces
#6
K M Shishkin, O I Arsenina, M K Shishkin, N V Popova
The aim of the study was to determine the prognostic criteria of orthodontic treatment success in a group of patients with crowded teeth position and a neutral occlusion. The study included 150 patients (123 female and 27 male) with the average follow-up of 10.02±2.88 years and average retention phase of 6.15±2.98 years. Teeth positions, dental arches form, occlusal contacts and periodontal status were studied. Dentition changes after orthodontic correction should be considered as a result of adaptive compensatory balance...
2016: Stomatologii︠a︡
https://www.readbyqxmd.com/read/27872049/contribution-of-kv1-5-channel-to-h2o2-induced-human-arteriolar-dilation-and-its-modulation-by-coronary-artery-disease
#7
Yoshinori Nishijima, Sheng Cao, Dawid S Chabowski, Ankush Korishettar, Alyce Ge, Xiaodong Zheng, Rodney Sparapani, David D Gutterman, David X Zhang
RATIONALE: Hydrogen peroxide (H2O2) regulates vascular tone in the human microcirculation under physiological and pathophysiological conditions. It dilates arterioles by activating BKCa channels in subjects with coronary artery disease (CAD), but its mechanisms of action in subjects without CAD (non-CAD) as compared to those with CAD remain unknown. OBJECTIVE: We hypothesize that H2O2-elicited dilation involves different K(+) channels in non-CAD versus CAD, resulting in an altered capacity for vasodilation during disease...
November 21, 2016: Circulation Research
https://www.readbyqxmd.com/read/27870630/case-236-middle-interhemispheric-variant-of-holoprosencephaly
#8
Noushin Yahyavi-Firouz-Abadi, Andrea Poretti, Oluwatoyin R Idowu, Alexander H Hoon, Thierry A Huisman, Izlem Izbudak
History A 13-year-old girl presented for evaluation and further management of spastic diplegia cerebral palsy. Absence of the corpus callosum was noted at screening prenatal head ultrasonography. She was born at full term via spontaneous vaginal delivery. Physical examination revealed decreased axial muscle tone and increased muscle tone in her extremities; the latter was more severe. She was nonambulatory. No midline craniofacial anomaly was seen. She had dysarthria but was able to speak in full sentences...
December 2016: Radiology
https://www.readbyqxmd.com/read/27861908/differences-in-trpc3-and-trpc6-channels-assembly-in-mesenteric-vascular-smooth-muscle-cells-in-essential-hypertension
#9
Inés Álvarez-Miguel, Pilar Cidad, M Teresa Pérez-García, José Ramón López-López
Increased vascular tone in essential hypertension involves a sustained rise in total peripheral resistance. A model has been proposed in which the combination of membrane depolarization and higher L-type Ca(2+) channel activity generates augmented Ca(2+) influx into vascular smooth muscle cells (VSMCs), contraction and vasoconstriction. The search for culprit ion channels responsible of membrane depolarization has provided several candidates, including members of the TRPC family. TRPC3 and TRPC6 are DAG-activated, non-selective cationic channels contributing to stretch- or agonist-induced depolarization...
November 12, 2016: Journal of Physiology
https://www.readbyqxmd.com/read/27857638/changes-in-muscle-spasticity-in-patients-with-cerebral-palsy-after-spinal-manipulation-case-series
#10
Oleh Kachmar, Taras Voloshyn, Mykhailo Hordiyevych
OBJECTIVE: The purpose of this case series was to report quantitative changes in wrist muscle spasticity in children with cerebral palsy after 1 spinal manipulation (SM) and a 2-week course of treatment. METHODS: Twenty-nine patients, aged 7 to 18 years, with spastic forms of cerebral palsy and without fixed contracture of the wrist, were evaluated before initiation of treatment, after 1 SM, and at the end of a 2-week course of treatment. Along with daily SM, the program included physical therapy, massage, reflexotherapy, extremity joint mobilization, mechanotherapy, and rehabilitation computer games for 3 to 4 hours' duration...
December 2016: Journal of Chiropractic Medicine
https://www.readbyqxmd.com/read/27854509/tgf-%C3%A3-1-function-in-airway-remodeling-and-hyperresponsiveness-the-missing-link
#11
Christie A Ojiaku, Edwin J Yoo, Reynold A Panettieri
The pathogenesis of asthma includes a complex interplay between airway inflammation, hyperresponsiveness, and remodeling. Current evidence suggests that airway structural cells - including bronchial smooth muscle cells, myofibroblasts, fibroblasts, and epithelial cells -mediate all three aspects of asthma pathogenesis. While studies show a connection between airway remodeling and changes in bronchomotor tone, the relationship between the two remains unclear. Transforming growth factor beta 1 (TGF-ß1), a growth factor elevated in the airway of patients with asthma, plays a role in airway remodeling and the shortening of various airway structural cells...
November 17, 2016: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/27853964/brain-pathway-differences-between-parkinson-s-disease-patients-with-and-without-rem-sleep-behavior-disorder
#12
Mina Ansari, Farzaneh Rahmani, Mahsa Dolatshahi, Atefe Pooyan, Mohammad Hadi Aarabi
PURPOSE: REM (rapid eye movement) sleep behavior disorder (RBD) is characterized by increased muscle tone and violent limb movements and is a usual symptom of the early stages of Parkinson's disease (PD). PD patients with RBD represent faster motor and cognitive dysfunction progression. However, there are limited studies on possible structural brain changes underpinning this disorder. METHODS: Diffusion magnetic resonance imaging (DMRI) was used to assess whether microstructural abnormalities in the brain of 23 RBD positive PD are detectable compared to 31 RBD negative PD...
November 16, 2016: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/27853876/impact-of-non-invasive-ventilation-on-sympathetic-nerve-activity-in-chronic-obstructive-pulmonary-disease
#13
Helge Haarmann, Jan Folle, Xuan Phuc Nguyen, Peter Herrmann, Karsten Heusser, Gerd Hasenfuß, Stefan Andreas, Tobias Raupach
PURPOSE: Chronic obstructive pulmonary disease (COPD) is associated with elevated sympathetic nerve activity, which is probably linked to an increased cardiovascular risk, and may contribute to muscle dysfunction by heightened muscle vasoconstrictor drive. We hypothesized that resistive unloading of respiratory muscles by intermittent non-invasive ventilation (NIV) reduces sympathetic tone at rest and during subsequent handgrip exercise in patients with COPD. METHODS: Muscle sympathetic nerve activity (MSNA) in the peroneal nerve, heart rate, blood pressure, CO2, and SpO2 were continuously recorded in 5 COPD patients with intermittent NIV and 11 control COPD patients without NIV...
November 16, 2016: Lung
https://www.readbyqxmd.com/read/27846623/paracrine-mechanisms-of-intravenous-bone-marrow-derived-mononuclear-stem-cells-in-chronic-ischemic-stroke
#14
Ashu Bhasin, M V Padma Srivastava, Sujata Mohanty, Sivasubramaniam Vivekanandhan, Sakshi Sharma, Senthil Kumaran, Rohit Bhatia
BACKGROUND: The emerging role of stem cell technology and transplantation has helped scientists to study their potential role in neural repair and regeneration. The fate of stem cells is determined by their niche, consisting of surrounding cells and the secreted trophic growth factors. This interim report evaluates the safety, feasibility and efficacy (if any) of bone marrow-derived mononuclear stem cells (BM-MNC) in chronic ischemic stroke by studying the release of serum vascular endothelial growth factor (VEGF) and brain-derived neurotrophic growth factor (BDNF)...
October 19, 2016: Cerebrovascular Diseases Extra
https://www.readbyqxmd.com/read/27834471/efficacy-and-safety-of-botulinum-toxin-type-a-for-upper-limb-spasticity-after-stroke-or-traumatic-brain-injury-a-systematic-review-with-meta-analysis-and-trial-sequential-analysis
#15
Yan Dong, Tao Wu, Xiaohua Hu, Tong Wang
INTRODUCTION: Muscle spasticity is a positive symptom after stroke and traumatic brain injury. Botulinum Toxin type A injection is widely used for treating post stroke and traumatic brain injury spasticity. This study aimed to evaluate efficacy and safety of Botulinum Toxin type A for upper limb spasticity after stroke and traumatic brain injury and investigate reliability and conclusiveness of available evidence for Botulinum Toxin type A intervention. EVIDENCE ACQUISITION: We searched electronic databases from inception to September 10 of 2016...
November 11, 2016: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/27829078/sex-specific-alterations-of-white-matter-developmental-trajectories-in-infants-with-prenatal-exposure-to-methamphetamine-and-tobacco
#16
Linda Chang, Kenichi Oishi, Jon Skranes, Steven Buchthal, Eric Cunningham, Robyn Yamakawa, Sara Hayama, Caroline S Jiang, Daniel Alicata, Antonette Hernandez, Christine Cloak, Tricia Wright, Thomas Ernst
Importance: Methamphetamine is a common illicit drug used worldwide. Methamphetamine and/or tobacco use by pregnant women remains prevalent. However, little is known about the effect of comorbid methamphetamine and tobacco use on human fetal brain development. Objective: To investigate whether microstructural brain abnormalities reported in children with prenatal methamphetamine and/or tobacco exposure are present at birth before childhood environmental influences...
November 9, 2016: JAMA Psychiatry
https://www.readbyqxmd.com/read/27825366/l-bse-experimentally-transmitted-to-sheep-presents-as-a-unique-disease-phenotype
#17
Marion M Simmons, Melanie J Chaplin, Timm Konold, Cristina Casalone, Katy E Beck, Leigh Thorne, Sharon Everitt, Tobias Floyd, Derek Clifford, John Spiropoulos
Apart from prion protein genotype, the factors determining the host range and susceptiblity for specific transmissible spongiform encephalopathy agents remain unclear. It is known that bovine atypical L-BSE can transmit to a range of species including primates and humanised transgenic mice. It is important, therefore, that there is as broad an understanding as possible of how such isolates might present in food animal species and how robust they are on inter- and intra-species transmission to inform surveillance sytems and risk assessments...
November 8, 2016: Veterinary Research
https://www.readbyqxmd.com/read/27824235/radial-shock-wave-therapy-effect-on-pain-and-motor-performance-in-a-paralympic-athlete-a-case-report
#18
Laura Mori, Lucio Marinelli, Elisa Pelosin, Matteo Gambaro, Roberto Trentini, Giovanni Abbruzzese, Carlo Trompetto
BACKGROUND: Recent studies demonstrated the usefulness of Radial Shock Waves Therapy (RSWT) in treating hypertonia in patients affected by cerebral palsy (CP), stroke, and dystonia. RSWT have never been used to treat spasticity in disabled athletes. CASE REPORT: An athlete affected by tetraparesis due to CP underwent three RSWT sessions in a week. We assessed muscular tone using the Modified Ashworth scale (MAS), pain and fatigue experienced during athletic performance with Visual Analogic Scale (VAS) and Borg scale Category-Ratio anchored at number 10 (Borg CR10)...
November 8, 2016: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/27822084/the-danish-cerebral-palsy-follow-up-program
#19
REVIEW
Helle Mätzke Rasmussen, Kirsten Nordbye-Nielsen, Bjarne Møller-Madsen, Mette Johansen, Niels Ellitsgaard, Charlotte Reinhardt Pedersen, Gija Rackauskaite, Henriette Engberg, Niels Wisbech Pedersen
AIM OF DATABASE: The Danish Cerebral Palsy Follow-up Program is a combined follow-up program and national clinical quality database that aims to monitor and improve the quality of health care for children with cerebral palsy (CP). STUDY POPULATION: The database includes children with CP aged 0-15 years and children with symptoms of CP aged 0-5 years. MAIN VARIABLES: In the follow-up program, the children are offered examinations throughout their childhood by orthopedic surgeons, physiotherapists, occupational therapists, and pediatricians...
2016: Clinical Epidemiology
https://www.readbyqxmd.com/read/27821617/increased-notch3-activity-mediates-pathological-changes-in-structure-of-cerebral-arteries
#20
Celine Baron-Menguy, Valérie Domenga-Denier, Lamia Ghezali, Frank M Faraci, Anne Joutel
CADASIL (Cerebral Autosomal Dominant Arteriopathy With Subcortical Infarcts and Leukoencephalopathy), the most frequent genetic cause of stroke and vascular dementia, is caused by highly stereotyped mutations in the NOTCH3 receptor, which is predominantly expressed in vascular smooth muscle. The well-established TgNotch3(R169C) mouse model develops characteristic features of the human disease, with deposition of NOTCH3 and other proteins, including TIMP3 (tissue inhibitor of metalloproteinase 3), on brain vessels, as well as reduced maximal dilation, and attenuated myogenic tone of cerebral arteries, but without elevated blood pressure...
November 7, 2016: Hypertension
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