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https://www.readbyqxmd.com/read/28346356/microinjection-of-antibodies-targeting-the-lamin-a-c-histone-binding-site-blocks-mitotic-entry-and-reveals-separate-chromatin-interactions-with-hp1-cenpb-and-pml
#1
Charles R Dixon, Melpomeni Platani, Alexandr A Makarov, Eric C Schirmer
Lamins form a scaffold lining the nucleus that binds chromatin and contributes to spatial genome organization; however, due to the many other functions of lamins, studies knocking out or altering the lamin polymer cannot clearly distinguish between direct and indirect effects. To overcome this obstacle, we specifically targeted the mapped histone-binding site of A/C lamins by microinjecting antibodies specific to this region predicting that this would make the genome more mobile. No increase in chromatin mobility was observed; however, interestingly, injected cells failed to go through mitosis, while control antibody-injected cells did...
March 25, 2017: Cells
https://www.readbyqxmd.com/read/28346354/anti-inflammatory-properties-of-irisin-mediator-of-physical-activity-are-connected-with-tlr4-myd88-signaling-pathway-activation
#2
Agnieszka Irena Mazur-Bialy, Ewa Pocheć, Marcin Zarawski
Irisin, an adipomiokine known as a mediator of physical activity, induces the browning of adipose tissue and it has potentially protective properties in the development of obesity-related states, such as insulin resistance, arteriosclerosis, and type 2 diabetes. Despite numerous studies conducted on this factor, still little is known about its impact on the functioning of immunocompetent cells, but its potential anti-inflammatory properties were previously suggested. In the current study we investigated the role of irisin (0-100 nM) in the downstream pathway activation of Toll-like receptor 4 (TLR4) in RAW 264...
March 25, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28345895/asymmetric-anchoring-is-required-for-efficient-%C3%AE-loop-opening-and-closing-in-cytosolic-phosphoenolpyruvate-carboxykinase
#3
Danica Cui, Aron Broom, Matthew J Mcleod, Elizabeth M Meiering, Todd Holyoak
Mobile Ω-loops play essential roles in the function of many enzymes. Here we investigated the importance of a residue lying outside of the mobile Ω-loop element in the catalytic function of an H477R variant of cPEPCK using crystallographic, kinetic, and computational analysis. The crystallographic data suggest that efficient transitioning of the Ω-loop to the closed conformation requires stabilization of the N-terminus of the loop through contacts between R461 and E588. In contrast, the C-terminal end of the Ω-loop undergoes changing interactions with the enzyme body through contacts between H477 at the C-terminus of the loop and E591 located on the enzyme body...
March 27, 2017: Biochemistry
https://www.readbyqxmd.com/read/28345874/delivery-of-pesticides-to-plant-parasitic-nematodes-using-tobacco-mild-green-mosaic-virus-as-a-nanocarrier
#4
Paul L Chariou, Nicole F Steinmetz
Plant parasitic nematodes are a major burden to the global agricultural industry, causing a $157 billion loss each year in crop production worldwide. Effective treatment requires large doses of nematicides to be applied, putting the environment and human health at risk. Challenges are to treat nematodes that are located deep within the soil, feeding on the roots of plants. To attack the problem at its roots, we propose the use of tobacco mild green mosaic virus (TMGMV), an EPA-approved herbicide as a carrier to deliver nematicides...
March 27, 2017: ACS Nano
https://www.readbyqxmd.com/read/28345487/extranuclear-translocation-of-high-mobility-group-a1-reduces-the-invasion-of-extravillous-trophoblasts-involved-in-the-pathogenesis-of-preeclampsia
#5
Yuka Uchikura, Keiichi Matsubara, Yoshifumi Muto, Yuko Matsubara, Toru Fujioka, Takashi Matsumoto, Takashi Sugiyama
OBJECTIVE: High-mobility group A1 (HMGA1) protein is known to express in trophoblast; however, the role of migration has not been reported to date. In this study, we investigated the role of HMGA1 on the pathogenesis of preeclampsia using immortalized human trophoblast cell (HTR-8/SVneo). MATERIALS AND METHODS: We investigated HMGA1 expression in cytotrophoblasts derived from our preeclampsia model mouse, the CD40L mouse, using immunofluorescence. Wound healing and transwell migration assays were also performed using HTR-8/SVneo (extravillous trophoblast) cells transfected with DNA or siRNA of HMGA1...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28343831/stepping-toward-objective-outcomes-a-prospective-analysis-of-step-count-after-total-joint-arthroplasty
#6
Meredith P Crizer, Gregory S Kazarian, Andrew N Fleischman, Jess H Lonner, Mitchell G Maltenfort, Antonia F Chen
BACKGROUND: Functional recovery monitoring after total hip arthroplasty (THA) and total knee arthroplasty (TKA) is often limited to surgeon-based assessment and patient self-reporting rather than objective measures. However, traditional outcomes may not reliably gauge return of function. The goal of this study was to evaluate and compare an objective measure of postoperative recovery, daily step-count, with patient self-reported outcomes. METHODS: Prospectively, 589 patients used a mobile step-tracking application to record daily steps...
March 1, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28343479/national-institutes-of-health-research-plan-on-rehabilitation
#7
(no author information available yet)
One in five Americans experiences disability that affects their daily function because of impairments in mobility, cognitive function, sensory impairment, or communication impairment. The need for rehabilitation strategies to optimize function and reduce disability is a clear priority for research to address this public health challenge. The National Institutes of Health (NIH) recently published a Research Plan on Rehabilitation that provides a set of priorities to guide the field over the next 5 years. The plan was developed with input from multiple Institutes and Centers within the NIH, the National Advisory Board for Medical Rehabilitation Research, and the public...
April 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28343277/pancreatic-alpha-cell-selective-deletion-of-tcf7l2-impairs-glucagon-secretion-and-counter-regulatory-responses-to-hypoglycaemia-in-mice
#8
Gabriela da Silva Xavier, Angeles Mondragon, Vishnou Mourougavelou, Céline Cruciani-Guglielmacci, Jessica Denom, Pedro Luis Herrera, Christophe Magnan, Guy A Rutter
AIMS/HYPOTHESIS: Transcription factor 7-like 2 (TCF7L2) is a high mobility group (HMG) box-containing transcription factor and downstream effector of the Wnt signalling pathway. SNPs in the TCF7L2 gene have previously been associated with an increased risk of type 2 diabetes in genome-wide association studies. In animal studies, loss of Tcf7l2 function is associated with defective islet beta cell function and survival. Here, we explore the role of TCF7L2 in the control of the counter-regulatory response to hypoglycaemia by generating mice with selective deletion of the Tcf7l2 gene in pancreatic alpha cells...
March 25, 2017: Diabetologia
https://www.readbyqxmd.com/read/28342908/intestinal-dendritic-cell-licensing-through-tlr4-is-required-for-oral-tolerance-in-allergic-contact-dermatitis
#9
Feriel Hacini-Rachinel, Mercedes Gomez de Agüero, Reem Kanjarawi, Ludovic Moro-Sibilot, Jean-Benoit Le Luduec, Claire Macari, Gilles Boschetti, Emilie Bardel, Philippe Langella, Bertrand Dubois, Dominique Kaiserlian
BACKGROUND: Induction of oral tolerance to haptens is an efficient way to prevent allergic contact dermatitis (ACD) in mice. Toll-like receptor (TLRs)-mediated sensing of the microbiota contributes to gut homeostasis, yet whether it contributes to induction of oral tolerance has not been documented. OBJECTIVE: We examined whether oral tolerance to the contact sensitizer DNFB depends on microbiota/TLRs and evaluated the role of TLR4 on the tolerogenic function of intestinal dendritic cells (DCs)...
March 22, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28342860/functional-characterization-of-lysophosphatidic-acid-receptor-1-mutants-identified-in-rat-cancer-tissues
#10
Shoichi Ishii, Toshifumi Tsujiuchi, Nobuyuki Fukushima
Lysophosphatidic acid (LPA), an extracellular lipid mediator, exerts various cellular effects through activation of LPA receptors, LPA1-LPA6, in many types of cells including cancer cells. We recently found several missense mutations of Lpar1 in rat cancer tissues. One of these mutations is located at the extracellular tip of the seventh transmembrane domain of LPA1, and another three mutations are found within the NPXXY motif in the seventh transmembrane domain. These mutants are designated F295S LPA1 and P308S, I310T, and Y311H LPA1, respectively...
March 23, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28342828/-resistance-training-for-muscle-weakness-in-multiple-sclerosis-direct-versus-contralateral-approach-in-individuals-with-ankle-dorsiflexors-disparity-in-strength
#11
Andrea Manca, Maria Paola Cabboi, Daniele Dragone, Francesca Ginatempo, Enzo Ortu, Edoardo Rosario De Natale, Beniamina Mercante, Giovanni Mureddu, Guido Bua, Franca Deriu
OBJECTIVE: To compare effects of contralateral strength training (CST) versus direct strength training (DST) of the more-affected ankle dorsiflexors on muscle performance and clinical-functional outcomes in people with multiple sclerosis (MS) exhibiting inter-limb strength asymmetry. DESIGN: Randomized controlled trial PARTICIPANTS: Individuals with relapsing-remitting MS and mild-to-moderate disability (EDSS≤6) presenting with ankle dorsiflexors' strength disparity...
March 22, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28342599/concentrate-supplementation-of-a-diet-based-on-medium-quality-grass-silage-for-4-weeks-prepartum-effects-on-cow-performance-health-metabolic-status-and-immune-function
#12
M W Little, N E O'Connell, M D Welsh, F J Mulligan, C P Ferris
Because negative energy balance (EB) contributes to transition-period immune dysfunction in dairy cows, dietary management strategies should aim to minimize negative EB during this time. Prepartum diets that oversupply energy may exacerbate negative EB in early lactation, with detrimental effects on immune function. However, with lower body condition score (BCS) cows, it has been shown that offering concentrates in addition to a grass silage-based diet when confined during an 8-wk dry period resulted in increased neutrophil function in early lactation...
March 22, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28341883/conformational-dynamics-play-important-roles-upon-the-function-of-n-acetylglutamate-kinase
#13
REVIEW
Xiaorong Yang
N-acetylglutamate kinase (NAGK) catalyzes the phosphorylation of N-acetylglutamate. In many bacteria, NAGK catalysis is the rate controlling step in the L-arginine biosynthesis pathway from glutamate to L-arginine and is allosterically inhibited by L-arginine. Many data show that conformational dynamics of NAGKs are essential for their function. The demonstration of the conformational mechanism provides a potential way to improve the yield of arginine. Due to the lack of NAGK catalysis step in arginine synthesis route of mammals, the elucidation of the dynamic mechanism can also provide a way to design a new antivirus drug...
March 24, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28341787/potential-new-treatment-for-non-freezing-cold-injury-is-iloprost-the-way-forward
#14
Anne-Marie Ionescu, Sarah Hutchinson, Mehtab Ahmad, Christopher Imray
INTRODUCTION: Non-freezing cold injury (NFCI) remains largely under-reported, and is of particular importance in the armed forces where its prevalence is greatest. Iloprost, a synthetic prostaglandin I2 analogue, has previously been used with some success in the treatment of vasospastic and freezing cold injuries, although its role in NFCI remains unclear. CASE REPORT: An Iloprost infusion was used to treat the long-term sequelae of an ex-soldier suffering with ongoing pedal pain and loss of function 20 years after the initial NFCI insult sustained on military exercise...
March 23, 2017: Journal of the Royal Army Medical Corps
https://www.readbyqxmd.com/read/28341309/polymorphic-distribution-of-proteins-in-solution-by-mass-spectrometry-the-analysis-of-insulin-analogues
#15
Maely P Fávero-Retto, Luiz Henrique Guerreiro, Cássio M Pessanha, Leonardo C Palmieri, Luís Maurício T R Lima
The characterization of conformational and oligomeric distribution of proteins is of paramount importance for the understanding of the correlation between structure and function. Among the bioanalytical approaches currently available, the electrospray ionization-mass spectrometry (ESI-MS) coupled to ion mobility spectrometry (IMS) is the best suited for high resolution identification with high sensitivity, allowing the in situ separation of oligomeric and conformational species. We tested the performance of the ESI-MS technique along with the IMS separation approach on a broad variety of insulin and insulin analogues with distinct oligomeric distribution pattern...
January 2017: Biologicals: Journal of the International Association of Biological Standardization
https://www.readbyqxmd.com/read/28340943/femoral-neck-collapse-after-internal-fixation-of-an-intracapsular-hip-fracture-does-it-indicate-a-poor-outcome
#16
Jonathan M Crosby, Martyn J Parker
The degree of femoral neck collapse that occurred after 519 patients with an intracapsular hip fracture treated by internal fixation with a Targon FN implant was measured. Mean femoral neck collapse was 8.0mm and this was increased for displaced fractures in comparison to undisplaced fractures (9.5mm versus 5.9mm, p<0.0001) and for those patients that subsequently developed fracture healing complications (11.6mm versus 7.1mm, p<0.0001). At one year from injury femoral neck collapse in excess of 15mm was associated with an increase in the degree of residual pain (p=0...
December 2016: Injury
https://www.readbyqxmd.com/read/28340695/long-term-follow-up-after-autologous-adipose-derived-stromal-vascular-fraction-injection-into-fingers-in-systemic-sclerosis-patients
#17
A Daumas, J Magalon, E Jouve, R Truillet, D Casanova, L Giraudo, J Veran, A Benyamine, F Dignat-George, G Magalon, F Sabatier, B Granel
INTRODUCTION: Hand involvement confers a substantial handicap in work and daily activities in patients with Systemic sclerosis (SSc). Autologous adipose-derived stromal vascular fraction is as an easily accessible source of cells with regenerative effects. We previously performed a phase I open-label clinical trial (NTC01813279) assessing the safety of subcutaneous injection of autologous adipose-derived stromal vascular fraction. Six and 12-month data have been reported. As patients were followed in our medical centre, we report their longer-term outcome beyond the end of the trial...
January 2017: Current Research in Translational Medicine
https://www.readbyqxmd.com/read/28340651/osteotomies-demystified
#18
REVIEW
Kyle K VanKoevering, Andrew J Rosko, Jeffrey S Moyer
Osteotomies are critical techniques in rhinoplasty. There are a variety of approaches, trajectories, and tools used with no widely standardized classification or nomenclature. Percutaneous osteotomies are gaining in popularity, and picture framing the nasomaxillary bone is crucial for predictable fracture and reproducible results. This is best accomplished with medial, lateral, and transverse osteotomies. Intermediate osteotomies are used less frequently, but provide more mobility. With a detailed understanding of anatomy and a thorough approach to nasal osteotomies, the contour and function of the bony vault can be reshaped with a successful outcome for both the surgeon and patient...
May 2017: Facial Plastic Surgery Clinics of North America
https://www.readbyqxmd.com/read/28340569/an-immunohistochemical-enzymatic-and-behavioral-study-of-cd157-bst-1-as-a-neuroregulator
#19
Haruhiro Higashida, Mingkun Liang, Toru Yoshihara, Shirin Akther, Azam Fakhrul, Cherepanov Stanislav, Tae-Sik Nam, Uh-Hyun Kim, Satoka Kasai, Tomoko Nishimura, Naila Al Mahmuda, Shigeru Yokoyama, Katsuhiko Ishihara, Maria Gerasimenko, Alla Salmina, Jing Zhong, Takahiro Tsuji, Chiharu Tsuji, Olga Lopatina
BACKGROUND: Recent rodent and human studies provide evidence in support of the fact that CD157, well known as bone marrow stromal cell antigen-1 (BST-1) and a risk factor in Parkinson's disease, also meaningfully acts in the brain as a neuroregulator and affects social behaviors. It has been shown that social behaviors are impaired in CD157 knockout mice without severe motor dysfunction and that CD157/BST1 gene single nucleotide polymorphisms are associated with autism spectrum disorder in humans...
March 24, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28340312/a-preliminary-investigation-on-the-effect-of-extracorporeal-shock-wave-therapy-as-a-treatment-for-neurogenic-heterotopic-ossification-following-traumatic-brain-injury-part-ii-effects-on-function
#20
J E Reznik, E Biros, Y Sacher, O Kibrik, S Milanese, S Gordon, M P Galea
INTRODUCTION: Neurogenic heterotopic ossification (NHO) occurs as a complication of traumatic brain injury (TBI). Management of clinically significant NHO remains variable. Complications of mature NHO include limitation of mobility. The effect of the extracorporeal shock wave therapy (ESWT) on range of motion at hip and knee, and function in patients with TBI with chronic NHO was investigated. METHODS: A series of single-case studies applying ESWT to chronic NHO at the hip or knee of 11 patients with TBI were undertaken at a rehabilitation hospital...
March 24, 2017: Brain Injury: [BI]
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