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https://www.readbyqxmd.com/read/28643181/promoting-acid-resistance-and-nisin-yield-of-lactococcus-lactis-f44-by-genetically-increasing-d-asp-amidation-level-inside-cell-wall
#1
Panlong Hao, Dongmei Liang, Lijie Cao, Bin Qiao, Hao Wu, Qinggele Caiyin, Hongji Zhu, Jianjun Qiao
Nisin fermentation by Lactococcus lactis requires a low pH to maintain a relatively higher nisin activity. However, the acidic environment will result in cell arrest, and eventually decrease the relative nisin production. Hence, constructing an acid-resistant L. lactis is crucial for nisin harvest in acidic nisin fermentation. In this paper, the first discovery of the relationship between D-Asp amidation-associated gene (asnH) and acid resistance was reported. Overexpression of asnH in L. lactis F44 (F44A) resulted in a sevenfold increase in survival capacity during acid shift (pH 3) and enhanced nisin desorption capacity compared to F44 (wild type), which subsequently contributed to higher nisin production, reaching 5346 IU/mL, 57...
June 22, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28642125/safety-and-efficacy-of-dual-lead-thalamic-deep-brain-stimulation-for-patients-with-treatment-refractory-multiple-sclerosis-tremor-a-single-centre-randomised-single-blind-pilot-trial
#2
Seth F Oliveria, Ramon L Rodriguez, Dawn Bowers, Daniel Kantor, Justin D Hilliard, Erin H Monari, Bonnie M Scott, Michael S Okun, Kelly D Foote
BACKGROUND: Efficacy in previous studies of surgical treatments of refractory multiple sclerosis tremor using lesioning or deep brain stimulation (DBS) has been variable. The aim of this study was to investigate the safety and efficacy of dual-lead thalamic DBS (one targeting the ventralis intermedius-ventralis oralis posterior nucleus border [the VIM lead] and one targeting the ventralis oralis anterior-ventralis oralis posterior border [the VO lead]) for the treatment of multiple sclerosis tremor...
June 19, 2017: Lancet Neurology
https://www.readbyqxmd.com/read/28641799/the-continued-search-for-physiological%C3%A2-pacing-where-are-we-now
#3
REVIEW
Pugazhendhi Vijayaraman, Pierre Bordachar, Kenneth A Ellenbogen
Cardiac pacing is an effective treatment for patients with bradycardia due to sinus node dysfunction or atrioventricular block. Despite decades of technological advances, the optimal ventricular pacing site to mimic normal human ventricular physiology and best hemodynamic response remains elusive. Beginning with atrial synchronous right ventricular (RV) apical pacing, the search has continued through alternate RV pacing sites, minimizing RV pacing, biventricular pacing, left ventricular (LV) pacing, and His-bundle pacing...
June 27, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28637786/the-role-of-capsaicin-sensitive-c-fiber-afferent-pathways-in-the-control-of-micturition-in-spinal-intact-and-spinal-cord-injured-mice
#4
Katsumi Kadekawa, Tsuyoshi Majima, Takahiro Shimizu, Naoki Wada, William C de Groat, Anthony J Kanai, Momokazu Goto, Mitsuharu Yoshiyama, Kimio Sugaya, Naoki Yoshimura
We examined bladder and urethral sphincter activity in mice with or without spinal cord injury (SCI) after C-fiber afferent desensitization induced by capsaicin pretreatment and changes in electrophysiological properties of mouse bladder afferent neurons 4 weeks after SCI. Female C57BL/6N mice were divided into 4 groups; (1) spinal intact (SI)-control, (2) SI-capsaicin pretreatment (Cap), (3) SCI-control and (4) SCI-Cap groups. Continuous cystometry and external urethral sphincter (EUS)-electromyogram (EMG) were conducted under an awake condition...
June 21, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28637715/tyrosine-kinase-inhibitors-protect-the-salivary-gland-from-radiation-damage-by-inhibiting-activation-of-protein-kinase-c-%C3%AE
#5
Sten M Wie, Elizabeth Wellberg, Sana D Karam, Mary E Reyland
In patients undergoing irradiation therapy, injury to non-tumor tissues can result in debilitating, and sometimes permanent, side effects. We have defined Protein Kinase C-delta (PKCδ) as a regulator of DNA damage induced apoptosis and have shown that phosphorylation of PKCδ by c-Abl and c-Src activates its pro-apoptotic function.  Here we have explored the use of tyrosine kinase inhibitors (TKIs) of c-Src and c-Abl to block activation of PKCδ for radioprotection of the salivary gland.  Dasatinib, imatinib, and bosutinib all suppressed tyrosine phosphorylation of PKCδ and inhibited IR-induced apoptosis in vitro  To determine if TKIs can provide radioprotection of salivary gland function in vivo, mice were treated with TKIs and a single or fractionated doses of irradiation...
June 21, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28636028/supramolecular-functional-assemblies-dynamic-membrane-transporters-and-peptide-nanotubular-composites
#6
Alberto Fuertes, Marisa Juanes, Juan R Granja, Javier Montenegro
The fabrication of functional molecular devices constitutes one of the most important current challenges for chemical sciences. The complex processes accomplished by living systems continuously demand the assistance of non-covalent interactions between molecular building blocks. Additionally, these building blocks (proteins, membranes, nucleotides) are also constituted by self-assembled structures. Therefore, supramolecular chemistry is the discipline required to understand the properties of the minimal self-assembled building blocks of living systems and to develop new functional smart materials...
June 21, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28635515/an-effective-treatment-for-heart-failure-caused-by-valvular-heart-diseases-thoracic-sympathetic-block
#7
Dan Li, Wei Liu, Dan Ma, Fengxiang Yun, Shu Li, Fengqi Liu
BACKGROUND: The pilot study is designed to investigate the effect of continuous thoracic sympathetic block (TSB) on cardiac function, reconstruction, and hemodynamic parameters in patients with heart failure resulting from valvular heart disease. METHOD: The cardiac function parameters, including left ventricle ejection fraction (LVEF), left ventricle end-diastole diameter (LVEDD), fractional shortening (FS), and N-terminal prohormone of brain natriuretic peptide (NT-proBNP), were measured in 19 patients before and after TSB treatment...
February 27, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/28634320/comparison-of-2-analgesia-modalities-in-total-knee-replacement-surgery-is-there-an-effect-on-knee-function-rehabilitation
#8
Janis Zinkus, Lina Mockutė, Arūnas Gelmanas, Ramūnas Tamošiūnas, Arūnas Vertelis, Andrius Macas
BACKGROUND We compared the effects of continuous femoral nerve block (CFNB) and continuous intraarticular block (CIAB) on pain, functional recovery and adverse effects after total knee arthroplasty (TKA). MATERIAL AND METHODS We prospectively randomized 54 patients undergoing TKA into 2 groups: CFNB (Group F) and CIAB (Group I). Surgery was performed under spinal anesthesia. All patients received patient-controlled analgesia (PCA) with morphine, diclofenac, and acetaminophen for the first 72 h postoperatively...
June 20, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28634283/phase-ib-study-of-utomilumab-pf-05082566-a-4-1bb-cd137-agonist-in-combination-with-pembrolizumab-mk-3475-in-patients-with-advanced-solid-tumors
#9
Anthony W Tolcher, Mario Sznol, Siwen Hu-Lieskovan, Kyriakos P Papadopoulos, Amita Patnaik, Drew Rasco, Donna Di Gravio, Bo Huang, Dhiraj Gambhire, Ying Chen, Aron Thall, Nuzhat Pathan, Emmett V Schmidt, Laura Q M Chow
Purpose:  This phase Ib study (NCT02179918) evaluated the safety, antitumor activity, pharmacokinetics, and pharmacodynamics of utomilumab, a fully human IgG2 mAb agonist of the T-cell costimulatory receptor 4-1BB/CD137 in combination with the humanized, PD-1-blocking IgG4 mAb pembrolizumab in patients with advanced solid tumors. <p>Experimental Design:  Utomilumab (0.45-5.0 mg/kg) and pembrolizumab (2 mg/kg) were administered intravenously every 3 weeks. Utomilumab dose escalation was conducted using the time-to-event-continual reassessment method...
June 20, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28633682/effect-of-space-allowance-and-floor-type-on-performance-welfare-and-physiological-measurements-of-finishing-beef-heifers
#10
M P Keane, M McGee, E G O'Riordan, A K Kelly, B Earley
Accommodating cattle indoors during the winter is widely practiced throughout Europe. There is currently no legislation surrounding the space allowance and floor type that should be provided to cattle during this time, however, concerns have been raised regarding the type of housing systems currently in use. The objective of the study was to investigate the effect of space allowance and floor type on performance and welfare of finishing beef heifers. Continental crossbred heifers (n=240: mean initial live; weight, 504 (SD 35...
June 21, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28632673/the-ultrasound-guided-continuous-erector-spinae-plane-block-for-postoperative-analgesia-in-video-assisted-thoracoscopic-lobectomy
#11
Paolo Scimia, Erika Basso Ricci, Andrea Droghetti, Pierfrancesco Fusco
No abstract text is available yet for this article.
July 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28631405/a-perylene-based-polycyclic-aromatic-hydrocarbon-electron-donor-for-a-highly-efficient-solar-cell-dye
#12
Junting Wang, Heng Wu, Linrui Jin, Jing Zhang, Yi Yuan, Peng Wang
The continuing efforts of creating novel polycyclic aromatic hydrocarbons (PAHs) and exploiting them as the crucial building-blocks of organic donor-acceptor (D-A) dyes with excellent excited state features, should bring an unprecedented chance for the improvement of power conversion efficiency (PCE) of dye-sensitized solar cells (DSCs). In this paper we report a nonacyclic aromatic hydrocarbon, N-annulated benzoindenopentaphene (NBIP), which can be tethered with multiple solubilizing groups including one 2-hexyldecyl, one 2-hexyldecyloxy, and four 4-hexylphenyl substituents...
June 20, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28630680/purely-entropic-self-assembly-of-the-bicontinuous-ia3d-gyroid-phase-in-equilibrium-hard-pear-systems
#13
Philipp W A Schönhöfer, Laurence J Ellison, Matthieu Marechal, Douglas J Cleaver, Gerd E Schröder-Turk
We investigate a model of hard pear-shaped particles which forms the bicontinuous Ia[Formula: see text]d structure by entropic self-assembly, extending the previous observations of Barmes et al. (2003 Phys. Rev. E68, 021708. (doi:10.1103/PhysRevE.68.021708)) and Ellison et al. (2006 Phys. Rev. Lett.97, 237801. (doi:10.1103/PhysRevLett.97.237801)). We specifically provide the complete phase diagram of this system, with global density and particle shape as the two variable parameters, incorporating the gyroid phase as well as disordered isotropic, smectic and nematic phases...
August 6, 2017: Interface Focus
https://www.readbyqxmd.com/read/28630373/incidence-and-time-course-for-developing-heart-failure-with-high-burden-right-ventricular-pacing
#14
Faisal M Merchant, Michael H Hoskins, Dan L Musat, Julie B Prillinger, Gregory J Roberts, Yelena Nabutovsky, Suneet Mittal
BACKGROUND: Although right ventricular pacing can contribute to cardiomyopathy, the impact of complete atrioventricular block (cAVB) on heart failure (HF) development in pacemaker patients has not been well characterized. We evaluated the incidence and time course for developing HF after pacemaker implantation for cAVB. METHODS AND RESULTS: A MarketScan database identified patients undergoing dual-chamber pacemaker implantation from 2008 to 2014. Patients with cAVB were identified by an atrioventricular node ablation or diagnosis of third-degree AVB...
June 2017: Circulation. Cardiovascular Quality and Outcomes
https://www.readbyqxmd.com/read/28630120/selinexor-induced-thrombocytopenia-results-from-inhibition-of-thrombopoietin-signaling-in-early-megakaryopoiesis
#15
Kellie R Machlus, Stephen K Wu, Prakrith Vijey, Thomas S Soussou, Zhi-Jian Liu, Eran Shacham, T J Unger, Trinayan Kashyap, Boris Klebanov, Martha Sola-Visner, Marsha Crochiere, Joseph E Italiano, Yosef Landesman
Selinexor is the first oral Selective Inhibitor of Nuclear Export compound tested for cancer treatment. Selinexor has demonstrated a safety therapy profile with broad antitumor activity against solid and hematological malignancies in phases 2 and 3 clinical trials (NCT03071276, NCT02343042, NCT02227251, NCT03110562, NCT02606461). While selinexor shows promising efficacy, its primary adverse effect is high-grade thrombocytopenia. Therefore, we aimed to identify the mechanism of selinexor-induced thrombocytopenia to relieve it and improve its clinical management...
June 19, 2017: Blood
https://www.readbyqxmd.com/read/28627724/comparative-echogenicity-of-an-epidural-catheter-and-2-new-catheters-designed-for-ultrasound-guided-continuous-peripheral-nerve-blocks
#16
Daniel M Moy, T Edward Kim, T Kyle Harrison, Jody C Leng, Brendan Carvalho, Steven K Howard, Cynthia Shum, Alex Kou, Edward R Mariano
Visualization of the catheter during ultrasound-guided continuous nerve block performance may be difficult but is an essential skill for regional anesthesiologists. The objective of this in vitro study was to evaluate 2 newer catheters designed for enhanced echogenicity and compare them to a widely used catheter not purposely designed for ultrasound guidance. Outcomes were the numbers of first-place rankings among all 3 catheters and scores on individual echogenicity criteria as assessed by 2 blinded reviewers...
June 19, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28627290/continuous-adductor-canal-block-added-to-local-infiltration-analgesia-lia-after-total-knee-arthroplasty-has-no-additional-benefits-on-pain-and-ambulation-on-postoperative-day-1-and-2-compared-with-lia-alone
#17
Svava Gudmundsdottir, Jonas L Franklin
Background and purpose - The additional effects of a continuous adductor canal block (ACB) compared with a single-dose local infiltration anesthesia (LIA) after total knee arthroplasty (TKA) has not been widely researched. Both methods have good effect individually. We hypothesized that a continuous ACB added to a single-dose LIA would lower pain scores while ambulating on postoperative day 1 (POD1) and postoperative day 2 (POD2). Patients and methods - 69 participants were included in this prospective, randomized, double-blind, placebo-controlled trial...
June 19, 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/28627040/a-facile-approach-toward-scalable-fabrication-of-reversible-shape-memory-polymers-with-bonded-elastomer-microphases-as-internal-stress-provider
#18
Long Fei Fan, Min Zhi Rong, Ming Qiu Zhang, Xu Dong Chen
The present communication reports a novel strategy to fabricate reversible shape-memory polymer that operates without the aid of external force on the basis of a two-phase structure design. The proof-of-concept material, crosslinked styrene-butadiene-styrene block copolymer (SBS, dispersed phase)/polycaprolactone-based polyurethane (PU, continuous phase) blend, possesses a closely connected microphase separation structure. That is, SBS phases are chemically bonded to crosslinked PU by means of a single crosslinking agent and two-step crosslinking process for increasing integrity of the system...
June 19, 2017: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/28625424/scheduling-non-operating-room-anesthesia-cases-in-endoscopy-using-the-sandbox-analogy
#19
Mitchell H Tsai, Leah A Cipri, Stephen E O'Donnell, J Matthew Fisher, Dimitrios A Andritsos
STUDY OBJECTIVE: For many hospitals, the non-operating room anesthesia (NORA) workload continues to expand. We developed a new NORA scheduling process with shared block time - a sandbox - amongst all of the gastroenterology groups and measured the efficacy of the intervention using basic operating room management metrics. DESIGN: Prospective analysis, statistical process control. SETTING: Academic, rural hospital; endoscopy suite; postoperative recovery area...
August 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28623423/cxcl10-suppression-of-hem-and-lymph-angiogenesis-in-inflamed-corneas-through-mmp13
#20
Nan Gao, Xiaowei Liu, Jiayin Wu, Juan Li, Chen Dong, Xinyi Wu, Xiao Xiao, Fu-Shin X Yu
Though not present in the normal adult cornea, both hem- and lymph-angiogenesis can be induced in this tissue after an inflammatory, infectious, or traumatic insult. We previously showed that the chemokine CXCL10 plays a key role in eradicating invading Candida (C.) albicans in C57BL6 mouse corneas. However, even after the clearance of pathogens, infection-induced inflammation and angiogenesis continue to progress in the cornea. The aim of this study is define the role of CXCL10 as a major angiostatic factor in modulating cornea angiogenesis in B6 mouse corneas under pathogenic conditions...
June 16, 2017: Angiogenesis
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