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https://www.readbyqxmd.com/read/28917726/ovulation-and-fertility-responses-for-sows-receiving-once-daily-boar-exposure-after-weaning-and-ovugel-%C3%A2-followed-by-a-single-fixed-time-post-cervical-artificial-insemination
#1
R R Ulguim, F P Bortolozzo, I Wentz, M Johnston, S K Webel, L Arend, R V Knox
Boar exposure is used to stimulate follicle development and estrus in sows after weaning and also to improve semen uptake and sperm transport with insemination. However, the need and value of boar exposure is uncertain when ovulation induction is used. These studies were designed to determine the effect of daily boar exposure after weaning when used with ovulation induction and fixed time post-cervical artificial insemination (PCAI). In experiment 1, sows were weaned into stalls and assigned to receive 3 min of daily fenceline boar exposure (BE, n = 7) or no boar exposure (NBE, n = 8)...
September 8, 2017: Theriogenology
https://www.readbyqxmd.com/read/28917316/humoral-and-cytokine-response-elicited-during-immunisation-with-recombinant-immune-mapped-protein-1-etimp-1-and-oocysts-of-eimeria-tenella
#2
Krishnendu Kundu, Rajat Garg, Saroj Kumar, Mrityunjay Mandal, Fiona M Tomley, Damer P Blake, Partha Sarathi Banerjee
Eimeria tenella, the causative agent of caecal coccidiosis, is a pathogenic gut dwelling protozoan which can cause severe morbidity and mortality in farmed chickens. Immune mapped protein-1 (IMP-1) has been identified as an anticoccidial vaccine candidate; in the present study allelic polymorphism was assessed across the IMP-1 coding sequence in E. tenella isolates from four countries and compared with the UK reference Houghton strain. Nucleotide diversity was low, limited to expansion/contraction of a CAG triplet repeat and five substitutions, three of which were non-synonymous...
September 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28917022/epidemiology-pathogenesis-and-management-of-takotsubo-syndrome
#3
REVIEW
Shams Y-Hassan, Per Tornvall
Takotsubo syndrome is a recently recognized acute cardiac disease entity with a clinical presentation resembling that of an acute coronary syndrome. The typical takotsubo syndrome patient has a unique circumferential left (bi-) ventricular contraction abnormality profile that extends beyond a coronary artery supply territory and appears to follow the anatomical cardiac sympathetic innervation. The syndrome predominantly affects postmenopausal women and is often preceded by emotional or physical stress. Patients with predisposing factors such as malignancy and other chronic comorbidities are more prone to suffer from takotsubo syndrome...
September 15, 2017: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/28916788/a-v0-core-neuronal-circuit-for-inspiration
#4
Jinjin Wu, Paolo Capelli, Julien Bouvier, Martyn Goulding, Silvia Arber, Gilles Fortin
Breathing in mammals relies on permanent rhythmic and bilaterally synchronized contractions of inspiratory pump muscles. These motor drives emerge from interactions between critical sets of brainstem neurons whose origins and synaptic ordered organization remain obscure. Here, we show, using a virus-based transsynaptic tracing strategy from the diaphragm muscle in the mouse, that the principal inspiratory premotor neurons share V0 identity with, and are connected by, neurons of the preBötzinger complex that paces inspiration...
September 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28916478/a-retrospective-study-of-pulseless-electrical-activity-bedside-ultrasound-identifies-interventions-during-resuscitation-associated-with-improved-survival-to-hospital-admission-a-reason-study
#5
Romolo Gaspari, Anthony Weekes, Srikar Adhikari, Vicki Noble, Jason T Nomura, Daniel Theodoro, Michael Woo, Paul Atkinson, David Blehar, Samuel Brown, Terrell Caffery, Emily Douglass, Jacqueline Fraser, Christine Haines, Samuel Lam, Michael Lanspa, Margaret Lewis, Otto Liebmann, Alexander Limkakeng, Fernando Lopez, Elke Platz, Michelle Mendoza, Hal Minnigan, Christopher Moore, Joseph Novik, Louise Rang, Will Scruggs, Christopher Raio
OBJECTIVE: Our objective was to determine whether organized or disorganized cardiac activity is associated with increased survival in patients who present in pulseless electrical activity (PEA) treated with either 1) standard advanced cardiac life support (ACLS) medications or 2) other interventions. METHODS: This was a secondary analysis of a prospective, multi-center observational study utilizing ultrasound in out-of-hospital or inemergency department PEA arrest...
September 12, 2017: Resuscitation
https://www.readbyqxmd.com/read/28916261/differential-involvement-of-l-and-t-type-ca-2-channels-store-operated-calcium-channel-trpc-and-rho-kinase-signaling-pathway-s-in-pgf2%C3%AE-induced-contractions-in-myometrium-of-non-pregnant-and-pregnant-buffaloes-bubalus-bubalis
#6
Abhishek Sharma, Udayraj P Nakade, Pooja Jaitley, Vipin Sharma, Soumen Choudhury, Satish Kumar Garg
This study unravels the differential involvement of calcium signaling pathway(s) in PGF2α-induced contractions in myometrium of non-pregnant and pregnant buffaloes. Compared to the myometrium of pregnant animals, myometrium of non-pregnant buffaloes was more sensitive to PGF2α-induced contractile effect as manifested by the changes in mean integral tension (MIT) and tonicity. However, phasic contraction was significantly more in myometrium of pregnant animals. The uterotonic effect of PGF2α was dependent on extracellular Ca(2+) and its influx through nifedipine-sensitive L-type Ca(2+) channels both in non-pregnant and pregnant animals, but T-type Ca(2+) channels play an additional role during pregnancy...
September 12, 2017: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/28916173/a-new-anatomical-view-on-the-vector-cardiogram-the-mean-temporal-spatial-isochrones
#7
Peter M van Dam
AIM: This proof of principle study aims to show the direct relationship between cardiac anatomy and the mean cardiac activation path as captured by the 12 lead ECG derived mean temporal-spatial isochrones (mean TSI) path. METHODS: To obtain the mean TSI signal a vector cardiographic (VCG) signal is constructed from the 12 lead ECG. The construction of the VCG signal uses a model of the heart and torso with patient specific electrode extracted from a 3D photo. The propagation of the activation through the heart is captured by estimating the mean of a cardiac activation isochrone using this VCG signal...
August 12, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28915856/exercise-prescription-for-patients-with-multiple-sclerosis-potential-benefits-and-practical-recommendations
#8
Farzin Halabchi, Zahra Alizadeh, Mohammad Ali Sahraian, Maryam Abolhasani
BACKGROUND: Multiple sclerosis (MS) can result in significant mental and physical symptoms, specially muscle weakness, abnormal walking mechanics, balance problems, spasticity, fatigue, cognitive impairment and depression. Patients with MS frequently decrease physical activity due to the fear from worsening the symptoms and this can result in reconditioning. Physicians now believe that regular exercise training is a potential solution for limiting the reconditioning process and achieving an optimal level of patient activities, functions and many physical and mental symptoms without any concern about triggering the onset or exacerbation of disease symptoms or relapse...
September 16, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28915834/skeletal-muscle-mechanics-questions-problems-and-possible-solutions
#9
REVIEW
Walter Herzog
Skeletal muscle mechanics have been studied ever since people have shown an interest in human movement. However, our understanding of muscle contraction and muscle mechanical properties has changed fundamentally with the discovery of the sliding filament theory in 1954 and associated cross-bridge theory in 1957. Nevertheless, experimental evidence suggests that our knowledge of the mechanisms of contraction is far from complete, and muscle properties and muscle function in human movement remain largely unknown...
September 16, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28915794/genome-sequence-of-the-ectophytic-fungus-ramichloridium-luteum-reveals-unique-evolutionary-adaptations-to-plant-surface-niche
#10
Bo Wang, Xiaofei Liang, Mark L Gleason, Rong Zhang, Guangyu Sun
BACKGROUND: Ectophytic fungi occupy the waxy plant surface, an extreme environment characterized by prolonged desiccation, nutrient limitation, and exposure to solar radiation. The nature of mechanisms that facilitate adaptation to this environment remains unclear. In this study, we sequenced the complete genome of an ectophytic fungus, Ramichloridium luteum, which colonizes the surface of apple fruit, and carried out comparative genomic and transcriptome analysis. RESULTS: The R...
September 15, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28915407/differentiation-and-sarcomere-formation-in-skeletal-myocytes-directly-prepared-from-human-induced-pluripotent-stem-cells-using-a-sphere-based-culture
#11
Saowanee Jiwlawat, Eileen Lynch, Jennifer Glaser, Ivy Smit-Oistad, Jeremy Jeffrey, Jonathan M Van Dyke, Masatoshi Suzuki
Human induced-pluripotent stem cells (iPSCs) are a promising resource for propagation of myogenic progenitors. Our group recently reported a unique protocol for the derivation of myogenic progenitors directly (without genetic modification) from human pluripotent cells using free-floating spherical culture. Here we expand our previous efforts and attempt to determine how differentiation duration, culture surface coatings, and nutrient supplements in the medium influence progenitor differentiation and formation of skeletal myotubes containing sarcomeric structures...
August 1, 2017: Differentiation; Research in Biological Diversity
https://www.readbyqxmd.com/read/28915383/force-activatable-biosensor-enables-single-platelet-force-mapping-directly-by-fluorescence-imaging
#12
Yongliang Wang, Dana N LeVine, Margaret Gannon, Yuanchang Zhao, Anwesha Sarkar, Bailey Hoch, Xuefeng Wang
Integrin-transmitted cellular forces are critical for platelet adhesion, activation, aggregation and contraction during hemostasis and thrombosis. Measuring and mapping single platelet forces are desired in both research and clinical applications. Conventional force-to-strain based cell traction force microscopies have low resolution which is not ideal for cellular force mapping in small platelets. To enable platelet force mapping with submicron resolution, we developed a force-activatable biosensor named integrative tension sensor (ITS) which directly converts molecular tensions to fluorescent signals, therefore enabling cellular force mapping directly by fluorescence imaging...
September 8, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28915324/facioscapulohumeral-muscular-dystrophy
#13
Alec M DeSimone, Anna Pakula, Angela Lek, Charles P Emerson
Facioscapulohumeral Muscular Dystrophy is a common form of muscular dystrophy that presents clinically with progressive weakness of the facial, scapular, and humeral muscles, with later involvement of the trunk and lower extremities. While typically inherited as autosomal dominant, facioscapulohumeral muscular dystrophy (FSHD) has a complex genetic and epigenetic etiology that has only recently been well described. The most prevalent form of the disease, FSHD1, is associated with the contraction of the D4Z4 microsatellite repeat array located on a permissive 4qA chromosome...
September 12, 2017: Comprehensive Physiology
https://www.readbyqxmd.com/read/28915323/hair-cell-transduction-tuning-and-synaptic-transmission-in-the-mammalian-cochlea
#14
Robert Fettiplace
Sound pressure fluctuations striking the ear are conveyed to the cochlea, where they vibrate the basilar membrane on which sit hair cells, the mechanoreceptors of the inner ear. Recordings of hair cell electrical responses have shown that they transduce sound via submicrometer deflections of their hair bundles, which are arrays of interconnected stereocilia containing the mechanoelectrical transducer (MET) channels. MET channels are activated by tension in extracellular tip links bridging adjacent stereocilia, and they can respond within microseconds to nanometer displacements of the bundle, facilitated by multiple processes of Ca2+-dependent adaptation...
September 12, 2017: Comprehensive Physiology
https://www.readbyqxmd.com/read/28915322/hormonal-regulation-of-adipogenesis
#15
Mi-Jeong Lee
Adipose tissue includes multiple anatomical depots that serve as an energy reserve that can expand or contract to maintain metabolic homeostasis. During normal growth and in response to overnutrition, adipose tissue expands by increasing the volume of preexisting adipocytes (hypertrophy) and/or by generating new adipocytes (hyperplasia) via recruitment and differentiation of adipose progenitors. This so-called healthy expansion through hyperplasia is thought to be beneficial in that it protects against obesity associated metabolic disorders by allowing for the "safe" storage of excess energy...
September 12, 2017: Comprehensive Physiology
https://www.readbyqxmd.com/read/28915237/dna-replication-stress-restricts-ribosomal-dna-copy-number
#16
Devika Salim, William D Bradford, Amy Freeland, Gillian Cady, Jianmin Wang, Steven C Pruitt, Jennifer L Gerton
Ribosomal RNAs (rRNAs) in budding yeast are encoded by ~100-200 repeats of a 9.1kb sequence arranged in tandem on chromosome XII, the ribosomal DNA (rDNA) locus. Copy number of rDNA repeat units in eukaryotic cells is maintained far in excess of the requirement for ribosome biogenesis. Despite the importance of the repeats for both ribosomal and non-ribosomal functions, it is currently not known how "normal" copy number is determined or maintained. To identify essential genes involved in the maintenance of rDNA copy number, we developed a droplet digital PCR based assay to measure rDNA copy number in yeast and used it to screen the yeast conditional temperature-sensitive mutant collection of essential genes...
September 15, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28915166/factors-associated-with-hospital-participation-in-centers-for-medicare-and-medicaid-services-accountable-care-organization-programs
#17
Askar S Chukmaitov, David W Harless, Gloria J Bazzoli, Yangyang Deng
BACKGROUND: In 2012, the Centers for Medicare and Medicaid Services (CMS) initiated the Medicare Shared Savings Program (MSSP) and Pioneer Accountable Care Organization (ACO) programs. Organizations in the MSSP model shared cost savings they generated with CMS, and those in the Pioneer program shared both savings and losses. It is largely unknown what hospital and environmental characteristics are associated with the development of CMS ACOs with one- or two-sided risk models. PURPOSE: The aim of this study was to assess the organizational and environmental characteristics associated with hospital participation in the MSSP and Pioneer ACOs...
September 15, 2017: Health Care Management Review
https://www.readbyqxmd.com/read/28915100/promotion-of-immunizations-for-health-professionals-in-europe-a-qualitative-study-in-seven-european-member-states
#18
Archontoula Dalma, Pania Karnaki, Agoritsa Baka, Vasilios Raftopoulos, Dina Zota, Afroditi Veloudaki, Amanda Garrison, Paloma Ellis Montalban, Zainub Dhanani, Athena Linos
Health Care Workers (HCWs) are a high-risk group for contracting Vaccine-Preventable Diseases who, despite legislation and guidance, remain undervaccinated. In order to understand their barriers and needs, focus groups were formed with 278 physicians, nurses, infection-control personnel, and policy-makers in 7 EU MS. Several implications for the development of promotional initiatives were identified including the need to overcome organizational barriers, to sensitize HCWs about the importance of immunization and to provide specific up-to-date information about vaccinations covering prevalence of diseases, protection years, side effects, administration times, antibody examinations, costs and immunization settings...
September 15, 2017: Hospital Topics
https://www.readbyqxmd.com/read/28914615/apoptosis-generates-mechanical-forces-that-close-the-lens-vesicle-in-the-chick-embryo
#19
Alina Oltean, Larry A Taber
During the initial stages of eye development, optic vesicles grow laterally outward from both sides of the forebrain and come into contact with the surrounding surface ectoderm (SE). Within the region of contact, these layers then thicken locally to create placodes and invaginate to form the optic cup (primitive retina) and lens vesicle (LV), respectively. This paper examines the biophysical mechanisms involved in LV formation, which consists of three phases: (1) lens placode formation; (2) invagination to create the lens pit (LP); and (3) closure to form a complete ellipsoidally shaped LV...
September 15, 2017: Physical Biology
https://www.readbyqxmd.com/read/28914540/adhesion-and-separation-of-nanoparticles-on-polymer-grafted-porous-substrates
#20
Kolattukudy P Santo, Aleksey Vishnyakov, Yefim Brun, Alexander V Neimark
This work explores interactions of functionalized nanoparticles (NP) with polymer brushes (PB) in a binary mixture of good and poor solvents. NP-PB systems are used in multiple applications, and we are particularly interested in the problem of chromatographic separation of NPs on polymer-grafted porous columns. This process involves NP flow through the pore channels with walls covered by PBs. NP-PB adhesion is governed by adsorption of polymer chains to NP surface and entropic repulsion caused by the polymer chain confinement between NP and the channel wall...
September 15, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
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