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https://www.readbyqxmd.com/read/27933737/testing-the-influence-of-surfactant-based-wound-dressings-on-proteinase-activity
#1
Sunyoung Jeong, Gregory S Schultz, Daniel J Gibson
Proteinases are enzymes that can digest other proteins. In chronic wounds, a sub-class of these enzymes with the ability to degrade the extracellular matrix (matrix metalloproteinases, MMPs) have been found to both inhibit healing and to be able to aid in enzymatically debriding a wound. Enzymatic debridement using the enzymes present in a wound is generally called autolytic debridement. Clinicians seeking to employ autolytic debridement typically use occlusive materials such as medical honey, alginate dressings and other occlusive dressings...
December 8, 2016: International Wound Journal
https://www.readbyqxmd.com/read/27933736/structural-insight-into-the-anti-prion-compound-inhibition-mechanism-of-native-prion-folding-over-misfolding
#2
Jiwon Choi, Rajiv Gandhi Govindaraj, Jae Wook Hyeon, Kyungro Lee, SongLing Ma, Su Yeon Kim, Jeongmin Lee, Kyoung Tai No
Transition of a physiological folded prion (PrP(C) ) into a pathogenic misfolded prion (PrP(S)(c) ) causes lethal neurodegenerative disorders and prion diseases. Anti-prion compounds have been developed to prevent this conversion; however, their mechanism of action remains unclear. Recently, we reported two anti-prion compounds, BMD29 and 35, identified by in silico and in vitro screening. In this study, we used extensive explicit-solvent molecular dynamics simulations to investigate ligand binding inhibition by anti-prion compounds in prion folding over misfolding behavior at acidic pH...
December 9, 2016: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/27933726/inheritance-of-evolved-clethodim-resistance-in-lolium-rigidum-populations-from-australia
#3
Rupinder Kaur Saini, Jenna Malone, Gurjeet Gill, Christopher Preston
BACKGROUND: In Australia, the extensive use of clethodim for the control of Lolium rigidum has resulted in the evolution of many clethodim-resistant L.rigidum populations. Five clethodim-resistant populations of L. rigidum were analysed for the inheritance of clethodim resistance. RESULTS: Reciprocal crosses were made between resistant (R) and susceptible (S) populations. Within crosses, dose responses of reciprocal F1 families of all populations, except A61 were similar each other, indicating clethodim resistance in these populations is encoded on the nuclear genome...
December 8, 2016: Pest Management Science
https://www.readbyqxmd.com/read/27933725/cellular-engineering-for-therapeutic-protein-production-product-quality-host-modification-and-process-improvement
#4
REVIEW
Evan Wells, Anne Skaja Robinson
Recombinant proteins offer many therapeutic advantages unavailable in traditional small molecule drugs, but the need for cellular versus chemical synthesis complicates production. Avenues for producing therapeutic biologics are continuously expanding, and developments in biochemistry, cell biology, and bioengineering fuel new discoveries that promise safer, more efficient, and cheaper drugs for consumers. Numerous approaches to express recombinant proteins exist, but Escherichia coli, Saccharomyces cerevisiae, and mammalian systems (e...
December 9, 2016: Biotechnology Journal
https://www.readbyqxmd.com/read/27933719/depth-profiling-cross-linked-poly-methyl-methacrylate-films-a-tof-sims-approach
#5
Soheila Naderi-Gohar, Kevin M H Huang, Yiliang Wu, Woon Ming Lau, Heng-Yong Nie
RATIONALE: In order to determine the degree of cross-linking on the surface and its variations in a nanometer-scale depth of organic materials, we developed an approach based on time-of-flight secondary ion mass spectrometry (TOF-SIMS), which provides rich chemical information in the form of fragment ions. TOF-SIMS is extremely surface sensitive and capable of depth profiling with the use of a sputter ion beam to remove controllable amounts of substance. METHODS: Poly(methyl methacrylate) (PMMA) films spin-coated on a Si substrate were cross-linked using a recently developed, surface sensitive, hyperthermal hydrogen projectile bombardment technique...
December 9, 2016: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/27933707/re-ultrasound-based-gestational-age-estimation-in-late-pregnancy-a-t-papageorghiou-b-kemp-w-stones-e-o-ohuma-s-h-kennedy-m-purwar-l-j-salomon-d-g-altman-j-a-noble-e-bertino-m-g-gravett-r-pang-l-cheikh-ismail-f-c-barros-a-lambert-y-a-jaffer-c-g-victora-z-a-bhutta
#6
https://www.readbyqxmd.com/read/27933703/effects-of-cpap-therapy-on-visceral-fat-thickness-carotid-intima-media-thickness-and-adipokines-in-patients-with-obstructive-sleep-apnoea
#7
Susanna S S Ng, Eric K H Liu, Ronald C W Ma, Tat-On Chan, Kin-Wang To, Ken K P Chan, Jenny Ngai, Wing-Ho Yip, Fanny W S Ko, Chun-Kwok Wong, David S C Hui
BACKGROUND AND OBJECTIVE: Obstructive sleep apnoea (OSA) is associated with an increased prevalence of metabolic syndrome. This study explores the effects of continuous positive airway pressure (CPAP) for patients with OSA on visceral and mesenteric fat thickness, carotid intima-media thickness (IMT) and adipokines. METHODS: A randomized controlled study was conducted at a teaching hospital on 90 patients newly diagnosed with OSA to receive either therapeutic CPAP or subtherapeutic CPAP for 3 months...
December 9, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27933699/room-temperature-arylation-of-thiols-breakthrough-with-aryl-chlorides
#8
Min Jiang, Haifang Li, Haijun Yang, Hua Fu
The formation of aryl C-S bonds is an important chemical transformation because aryl sulfides are valuable building blocks for the synthesis of biologically and pharmaceutically active molecules and organic materials. Aryl sulfides have traditionally been synthesized through the transition-metal-catalyzed cross-coupling of aryl halides with thiols. However, the aryl halides used are usually bromides and iodides; readily available, low-cost aryl chlorides often not reactive enough. Furthermore, the deactivation of transition-metal catalysts by thiols has forced chemists to use high catalyst loadings, specially designed ligands, high temperatures, and/or strong bases, thus leading to high costs and the incompatibility of some functional groups...
December 9, 2016: Angewandte Chemie
https://www.readbyqxmd.com/read/27933698/sofosbuvir-plus-ribavirin-in-treatment-na%C3%A3-ve-patients-with-chronic-hepatitis-c-virus-genotype-1-or-3-infection-in-india
#9
S R Shah, A Chowdhury, R Mehta, D Kapoor, A Duseja, A Koshy, A Shukla, A Sood, K Madan, R Sud, S Nijhawan, R Pawan, M Prasad, K Kersey, D Jiang, E Svarovskaia, B Doehle, B Kanwar, M Subramanian, S K Acharya, S Sarin
Until 2014, pegylated interferon plus ribavirin was the recommended standard of care for the treatment of chronic hepatitis C virus (HCV) infection in India. This open-label phase 3b study, conducted across 14 sites in India between 31 March 2014 and 30 November 2015, evaluated the efficacy and safety of sofosbuvir plus ribavirin therapy among treatment-naïve patients with chronic genotype 1 or 3 HCV infection. A total of 117 patients with genotype 1 or 3 HCV infection were randomized 1:1 to receive sofosbuvir 400 mg and weight-based ribavirin (1000 or 1200 mg) daily for 16 or 24 weeks...
December 9, 2016: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/27933692/preferential-changes-of-skeletal-muscle-echogenicity-in-myotonic-dystrophy-type-1
#10
N Takamatsu, K Sogawa, H Nodera, S Hashiguchi, Y Osaki, M Saito, A Mori, Y Izumi, R Kaji
BACKGROUND AND PURPOSE: In myotonic dystrophy type 1 (DM1), weakness of distal limb muscles affects quality of life. Non-invasive evaluation of muscular involvement by muscle sonography could be useful for characterizing muscle-specific involvement. METHODS: Sonography of the lower leg and forearm was performed in 19 patients with DM1 and 10 control subjects. The mean echo intensities (EIs) of seven limb muscles were obtained by computer-assisted histogram analysis and compared within DM1 according to the overall clinical severity...
December 9, 2016: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/27933686/risk-of-incident-mycobacterium-tuberculosis-infection-in-patients-with-inflammatory-bowel-disease-a-nationwide-population-based-study-in-south-korea
#11
S N Hong, H J Kim, K H Kim, S-J Han, I M Ahn, H S Ahn
BACKGROUND: The low incidence of Mycobacterium tuberculosis infection and lack of adequate controls have prevented researchers from estimating tuberculosis (TB) risk in inflammatory bowel disease (IBD) patients. AIM: To evaluate the risk of incident TB among IBD patients. METHODS: Using the 2011-2013 data of the South Korean National Health Insurance (NHI) system, we calculated the incidence rates (IRs), standardised incidence ratio (SIR) and number needed to screen (NNS) for incident TB in IBD patients compared to the general population in terms of subtype, age, gender and IBD medications...
January 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/27933679/supplementation-with-nutrients-modulating-insulin-like-growth-factor-1-negatively-correlated-with-changes-in-the-levels-of-pro-inflammatory-cytokines-in-community-dwelling-elderly-people-at-risk-of-undernutrition
#12
M Kim, M Kim, Y J Lee, H J Song, J K Shim, D H Chang, W K Yu, S-H Lee, J H Lee
BACKGROUND: Suboptimal nutrition accompanied by chronic low-grade increases in circulating cytokine levels is more common in elderly people. We explored the improvement in nutritional status, especially in the level of insulin-like growth factor-1 (IGF-1) and its relationship with changes in circulating cytokine levels, after providing extra protein and energy content to community-dwelling older adults at risk of undernutrition. METHODS: Sixty nondiabetic subjects, aged ≥65 years and living independently in a community for elderly people, with a serum pre-albumin level ≤30 mg dL(-1) and a body mass index <25 kg m(-2) , were recruited...
December 9, 2016: Journal of Human Nutrition and Dietetics: the Official Journal of the British Dietetic Association
https://www.readbyqxmd.com/read/27933678/trends-in-serious-quit-attempts-in-the-united-states-2009-2014
#13
Joe G Gitchell, Saul Shiffman, Mark A Sembower
BACKGROUND AND AIMS: Quitting smoking is the most potent way to reduce the health risks associated with smoking cigarettes, and public health objectives in the USA include dramatic increases in the proportion of smokers making a serious quit attempt each year. The U.S. Centers for Disease Control and Prevention (CDC) has, since 2000, set as its Healthy People 2020 objective to get 80% of smokers to make a serious quit attempt per year. This study assessed the trend in quit attempts from 2009 to 2014...
December 9, 2016: Addiction
https://www.readbyqxmd.com/read/27933677/the-effect-of-slow-paced-breathing-on-stress-management-in-adolescents-with-intellectual-disability
#14
S Laborde, M S Allen, N Göhring, F Dosseville
BACKGROUND: Intellectual disabilities often create a state of chronic stress for both the person concerned and their significant others (family, caregivers). The development of stress management methods is therefore important for the reduction of stress in persons with intellectual disability. The aim of this experiment was to investigate the effect of slow-paced breathing on stress symptoms experienced by adolescents with intellectual disabilities during a cognitive task under time pressure...
December 9, 2016: Journal of Intellectual Disability Research: JIDR
https://www.readbyqxmd.com/read/27933665/detection-of-dna-sequences-from-a-novel-papillomavirus-in-a-feline-basal-cell-carcinoma
#15
John S Munday, Adrienne French, Neroli Thomson
BACKGROUND: Basal cell carcinomas (BCCs) are uncommon feline skin neoplasms of uncertain cause. CASE: A 14-year-old Abyssinian cat developed a soft dermal nodule on the dorsal thorax. This mass grew slowly over a six month period before being surgically excised. METHODS AND RESULTS: Histology revealed a BCC. Additionally, changes suggestive of an early Bowenoid in situ carcinoma (BISC) were present in the overlying epidermis. Both the BCC and the BISC contained papillomavirus-induced cell changes and prominent basophilic intracytoplasmic bodies...
December 8, 2016: Veterinary Dermatology
https://www.readbyqxmd.com/read/27933662/evidence-of-staphylococcus-aureus-deformation-proliferation-and-migration-in-canaliculi-of-live-cortical-bone-in-murine-models-of-osteomyelitis
#16
Karen L de Mesy Bentley, Ryan Trombetta, Kohei Nishitani, Sheila N Bello-Irizarry, Mark Ninomiya, Longze Zhang, Hung Li Chung, James L McGrath, John L Daiss, Hani A Awad, Stephen L Kates, Edward M Schwarz
While Staphylococcus aureus osteomyelitis is considered to be incurable, the major bacterial reservoir in live cortical bone has remained unknown. In addition to biofilm bacteria on necrotic tissue and implants, studies have implicated intracellular infection of osteoblasts and osteocytes as a mechanism of chronic osteomyelitis. Thus, we performed the first systematic transmission electron microscopy (TEM) studies to formally define major reservoirs of S. aureus in chronically infected mouse (Balb/c J) long bone tissue...
December 8, 2016: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/27933661/mutations-in-the-neb-gene-cause-fetal-akinesia-arthrogryposis-multiplex-congenita
#17
Michal Feingold-Zadok, David Chitayat, Karen Chong, Marie Injeyan, Patrick Shannon, Daphne Chapmann, Ron Maymon, Nir Pillar, Orit Reish
OBJECTIVE: We studied a series of patients with fetal akinesia deformation sequence (FADS)/arthrogryposis multiplex congenita (AMC), with nemaline bodies on muscle specimens, that revealed mutations in the NEB gene. METHOD: We pathologically assessed seven cases from three families, who presented with AMC/FADS. Targeted genetic analysis for Ashkenazi Jewish (AJ) mutation (in relevant patients) was followed by next generation sequencing and Multiplex Ligation-dependent Probe Amplification...
December 9, 2016: Prenatal Diagnosis
https://www.readbyqxmd.com/read/27933649/using-chiral-peptide-substitutions-to-probe-the-structure-function-relationship-of-a-key-residue-of-a%C3%AE-42
#18
Christopher J A Warner, Subrata Dutta, Alejandro R Foley, Eefei Chen, David S Kliger, Jevgenij A Raskatov
Amyloid beta-protein 42 plays an important role in the onset and progression of Alzheimer's disease. Familial mutations have identified the glutamate residue 22 as a hotspot with regard to peptide neurotoxicity. We introduce an approach to study the influence of systematic sidechain modification at this residue, employing chirality as a structural probe. Circular dichroism experiments reveal that charge-preserving alterations of the amino acid sidechain attenuate the characteristic random coil to β-sheet transition associated with the wildtype peptide...
December 8, 2016: Chirality
https://www.readbyqxmd.com/read/27933646/antisperm-antibodies-in-repeat-breeding-cows-frequency-detection-and-validation-of-threshold-levels-employing-sperm-immobilization-sperm-agglutination-and-immunoperoxidase-assay
#19
S K Srivastava, S Shinde, S K Singh, S Mehrotra, M R Verma, A K Singh, S Nandi, N Srivastava, S K Singh, T K Goswami, S K Bhure, H Kumar, S K Ghosh
Antisperm antibodies have been found in repeat-breeding(RB) cows, and those causing agglutination and/or immobilization of sperm are considered to be closely related to unexplained infertility. However, a standard protocol for identifying antisperm antibodies (ASA) in cattle is not validated. Therefore, an investigation was undertaken to evaluate sperm immobilization (SIT), sperm agglutination (SAT) and immunoperoxidase (IPT)assays for detection of ASA in serum and their respective threshold levels for confirmation...
December 8, 2016: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/27933640/tricuspid-annular-plane-systolic-excursion-as-a-marker-of-right-ventricular-dysfunction-in-pediatric-patients-with-dilated-cardiomyopathy
#20
Ericka S McLaughlin, Curtis Travers, William L Border, Shriprasad Deshpande, Ritu Sachdeva
BACKGROUND: Right ventricular systolic dysfunction (RVSD) is a predictor of outcomes in dilated cardiomyopathy (DCM) in adults, but little is known in children. Tricuspid annular plane systolic excursion (TAPSE) has emerged as a reliable tool to assess RVSD. We sought to determine the prevalence and prognostic significance of RVSD using TAPSE in children with DCM. METHODS: The first echocardiogram at the time of diagnosis with DCM was analyzed to obtain left ventricular ejection fraction (LVEF) and 2D TAPSE...
December 9, 2016: Echocardiography
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