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https://www.readbyqxmd.com/read/28645186/igf-i-gene-therapy-in-aging-rats-modulates-hippocampal-genes-relevant-to-memory-function
#1
Joaquín Pardo, Martin C Abba, Ezequiel Lacunza, Olalekan M Ogundele, Isabel Paiva, Gustavo R Morel, Tiago F Outeiro, Rodolfo G Goya
In rats, learning and memory performance decline during normal aging, which makes this rodent species a suitable model to evaluate therapeutic strategies. In aging rats, insulin-like growth factor-I (IGF-I), is known to significantly improve spatial memory accuracy as compared to control counterparts. A constellation of gene expression changes underlie the hippocampal phenotype of aging but no studies on the effects of IGF-I on the hippocampal transcriptome of old rodents have been documented. Here, we assessed the effects of IGF-I gene therapy on spatial memory performance in old female rats and compared them with changes in the hippocampal transcriptome...
June 22, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28645175/perturbation-to-cholesterol-at-the-neuromuscular-junction-confers-botulinum-neurotoxin-a-sensitivity-to-neonatal-mice
#2
Baskaran Thyagarajan, Joseph G Potian, Joseph J McArdle, Padmamalini Baskaran
Botulinum neurotoxin A (BoNT/A) cleaves SNAP25 at the motor nerve terminals (MNT) and inhibits stimulus evoked acetylcholine release (SEAR). This causes skeletal muscle paralysis. However, younger neonatal mice (<P7; less than 7 days old) are resistant to the neuroparalytic effects of BoNT/A. That is, in vivo injection of BoNT/A at the innervations of Extensor digitorum longus (EDL) muscle in the hindlimbs inhibited the toe spread reflex within 24 hours following BoNT/A injection in adult mouse and in older (> P7) neonatal mice younger than 7 days-age remained unaffected by BoNT/A injection...
June 22, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28645160/chronic-pseudomonas-aeruginosa-biofilm-infection-impairs-murine-s100a8-a9-and-neutrophil-effector-cytokines-implications-for-delayed-wound-closure
#3
Hannah Trøstrup, Christian Johann Lerche, Lars Jackie Christophersen, Kim Thomsen, Peter Østrup Jensen, Hans Petter Hougen, Niels Høiby, Claus Moser
The impact of Pseudomonas aeruginosa biofilm infections in chronic wounds and clinical implication for healing is receiving increased attention. However, the pathophysiology of host/pathogen interplay is not fully understood. By further revealing the mechanisms, necessary new treatment strategies may be identified. Since the background for chronic wounds is diverse, representative animal models are important. We assessed host response and spontaneous wound closure in the relatively resistant C3H/HeN and the susceptible BALB/c mouse strain...
June 22, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28645101/co-localization-of-endogenous-arf6-and-its-activator-efa6d-in-the-granular-convoluted-tubule-cells-of-mouse-submandibular-glands-under-normal-conditions-and-when-stimulated-by-isoproterenol-noradrenaline-and-carbachol
#4
Apussara Tachow, Wipawee Thoungseabyoun, Laorrat Phuapittayalert, Kanoktip Petcharat, Hiroyuki Sakagami, Hisatake Kondo, Wiphawi Hipkaeo
OBJECTIVE: This study proposed to investigate the localization at light and electron microscopic levels of Arf6 and its activator EFA6D in the mouse submandibular gland (SMG) under normal conditions and when stimulated by adrenergic or cholinergic agonists. MATERIALS AND METHODS: SMGs of male adult mice were utilized for immunoblotting and immuno-light and -electron microscopic analyses. Isoproterenol and noradrenalin were used as adrenergics, while carbachol was used for the cholinergic stimulant...
June 13, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28645081/loudness-and-time-dependence-of-auditory-evoked-potentials-is-blunted-by-the-nmda-channel-blocker-mk-801
#5
Tobias Teichert
Amplitudes of auditory evoked potentials (AEP) increase with the intensity/loudness of sounds (loudness-dependence of AEP, LDAEP), and the time between adjacent sounds (time-dependence of AEP, TDAEP). Both, blunted LDAEP and blunted TDAEP are markers of altered auditory function in schizophrenia (SZ). However, while blunted LDAEP has been attributed to altered serotonergic function, blunted TDAEP has been linked to altered NMDA receptor function. Despite phenomenological similarities of the two effects, no common pharmacological underpinnings have been identified...
June 15, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28645060/young-people-who-use-drugs-engaged-in-harm-reduction-programs-in-new-york-city-overdose-and-other-risks
#6
Michele Calvo, Jessica MacFarlane, Heather Zaccaro, Matthew Curtis, María Cabán, Jamie Favaro, Marian R Passannante, Taeko Frost
BACKGROUND: Little is known about the engagement of young people who use drugs (PWUD) in harm reduction programs (HRPs), and few studies have included non-opioid users and non-injectors. While HRPs have effectively engaged PWUD, young people are under-represented in their services. METHODS: The Injection Drug Users Health Alliance Citywide Study (IDUCS) is the largest community-based study of PWUD in HRPs in the US. From 2014-2015, 2421 HRP participants across New York City (NYC) completed a cross-sectional survey...
June 15, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28645037/slip-additive-migration-surface-morphology-and-performance-on-injection-moulded-high-density-polyethylene-closures
#7
Nabeen Dulal, Robert Shanks, Thomas Gengenbach, Harsharn Gill, David Chalmers, Benu Adhikari, Isaac Pardo Martinez
HYPOTHESIS: The amount and distribution of slip agents, erucamide, and behenamide, on the surface of high-density polyethene, is determined by integral characteristics of slip agent structure and polymer morphology. A suite of surface analysis techniques was applied to correlate physicochemical properties with slip-additive migration behaviour and their surface morphology. The migration, surface morphology and physicochemical properties of the slip additives, crystallinity and orientation of polyethene spherulites and interaction between slip additives and high-density polyethene influence the surface characteristics...
June 13, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28644946/effectiveness-of-corticosteroid-injections-for-treatment-of-de-quervain-s-tenosynovitis
#8
Jinhee K Oh, Susan Messing, Ollivier Hyrien, Warren C Hammert
BACKGROUND: Although surgery can provide definitive treatment for de Quervain's tenosynovitis, nonoperative treatment could be preferable if symptoms are predictably relieved. We sought to determine the effectiveness of corticosteroid injections as treatment for de Quervain's tenosynovitis and to evaluate patient characteristics as predictors of treatment outcome. METHODS: A retrospective study was conducted using our institutional database International Classification of Disease, version 9 (ICD-9) code list for de Quervain's tenosynovitis...
July 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28644937/predictors-of-recurrence-after-corticosteroid-injection-for-trigger-digits
#9
Louis C Grandizio, Amy Speeckaert, Justin Brothers, Jove Graham, Joel C Klena
BACKGROUND: We aimed to identify risk factors for recurrence of trigger digit following corticosteroid injection. METHODS: A retrospective review identified patients 18 years and older who presented to a single fellowship-trained hand surgeon with a symptomatic trigger digit during a 1-year period. Baseline demographic data were recorded. Patients with persistent trigger digit after a single injection were offered a second injection. Patients refusing a second injection were excluded from our analysis...
July 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28644884/ligand-induced-rapid-skeletal-muscle-atrophy-in-hsa-fv2e-perk-transgenic-mice
#10
Masato Miyake, Masashi Kuroda, Hiroshi Kiyonari, Kenji Takehana, Satoshi Hisanaga, Masatoshi Morimoto, Jun Zhang, Miho Oyadomari, Hiroshi Sakaue, Seiichi Oyadomari
BACKGROUND: Formation of 43S and 48S preinitiation complexes plays an important role in muscle protein synthesis. There is no muscle-wasting mouse model caused by a repressed 43S preinitiation complex assembly. OBJECTIVE: The aim of the present study was to develop a convenient mouse model of skeletal muscle wasting with repressed 43S preinitiation complex assembly. MATERIAL AND METHODS: A ligand-activatable PERK derivative Fv2E-PERK causes the phosphorylation of eukaryotic initiation factor 2α (eIF2α), which inhibits 43S preinitiation complex assembly...
2017: PloS One
https://www.readbyqxmd.com/read/28644875/estimation-of-the-optimal-dosing-regimen-of-escitalopram-in-dogs-a-dose-occupancy-study-with-11c-dasb
#11
Olivia Taylor, Nick Van Laeken, Ingeborgh Polis, Robrecht Dockx, Lise Vlerick, Andre Dobbeleir, Ingeborg Goethals, Jimmy Saunders, Nele Sadones, Chris Baeken, Filip De Vos, Kathelijne Peremans
Although the favourable characteristics of escitalopram as being the most selective serotonin reuptake inhibitor and having an increased therapeutic efficacy via binding on an additional allosteric binding site of the serotonin transporter, its dosing regimen has not yet been optimized for its use in dogs. This study aimed to estimate the optimal dosing frequency and the required dose for achieving 80% occupancy of the serotonin transporters in the basal ganglia. The dosing frequency was investigated by determining the elimination half-life after a four day oral pre-treatment period with 0...
2017: PloS One
https://www.readbyqxmd.com/read/28644739/treatment-of-hepatitis-c-with-new-fixed-dose-combinations
#12
Vicente Soriano
The advent of oral direct-acting antivirals (DAA) has revolutionized the hepatitis C virus (HCV) therapeutic landscape providing cure rates over 90%. However, a subset of patients remains at higher risk for treatment failure, including those infected with: i) genotype 3 and cirrhosis; ii) resistance-associated substitutions (RAS) occurring either as natural polymorphisms or selected after prior DAA failure; and iii) poor drug adherence associated with social disabilities (homeless, psychiatric illnesses, injection drug use, alcoholism, etc...
June 23, 2017: Expert Opinion on Pharmacotherapy
https://www.readbyqxmd.com/read/28644492/electronic-properties-of-blue-phosphorene-graphene-and-blue-phosphorene-graphene-like-gallium-nitride-heterostructures
#13
Minglei Sun, Jyh-Pin Chou, Jin Yu, Wencheng Tang
Blue phosphorene (BlueP) is a graphene-like phosphorus nanosheet which was synthesized very recently for the first time [Nano Lett., 2016, 16, 4903-4908]. The combination of electronic properties of two different two-dimensional materials in an ultrathin van der Waals (vdW) vertical heterostructure has been proved to be an effective approach to the design of novel electronic and optoelectronic devices. Therefore, we used density functional theory to investigate the structural and electronic properties of two BlueP-based heterostructures - BlueP/graphene (BlueP/G) and BlueP/graphene-like gallium nitride (BlueP/g-GaN)...
June 23, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28644490/potentiating-role-of-copper-on-spatial-memory-deficit-induced-by-beta-amyloid-and-evaluation-of-mitochondrial-function-markers-in-the-hippocampus-of-rats
#14
Ladan Behzadfar, Mohammad Abdollahi, Omid Sabzevari, Rohollah Hosseini, Ahmad Salimi, Parvaneh Naserzadeh, Mohammad Sharifzadeh, Jalal Pourahmad
Mounting evidence suggests that copper, a crucial element in normal brain function, plays an important role in the etiology of Alzheimer's disease, which is known as a neurodegenerative mitochondrial disorder. However, the precise mechanisms of its effects on cognitive and mitochondrial functions through the CNS have not been thoroughly recognized yet. In this study, we aimed to investigate the long-term (3-week) effects of copper sulfate (50, 100 and 200 mg kg(-1) day(-1)) exposure on learning and memory as well as on mitochondrial function in the hippocampus of rats in the presence and absence of beta amyloid (1 μg μl(-1) per side) intrahippocampally (IH)...
June 23, 2017: Metallomics: Integrated Biometal Science
https://www.readbyqxmd.com/read/28644445/effects-of-daily-restraint-with-and-without-injections-on-skeletal-properties-in-c57bl-6nhsd-mice
#15
Rachel A Larsen, Jessica L Peveler, Joshuah B Klutzke, Debra L Hickman, Mohammad W Aref, Joseph M Wallace, Drew M Brown, Matthew R Allen
No abstract text is available yet for this article.
June 23, 2017: Lab Animal
https://www.readbyqxmd.com/read/28644388/cellular-uptake-and-delivery-dependent-effects-of-tb-3-doped-hydroxyapatite-nanorods
#16
Yan Wei, Ying He, Xiyu Li, Haifeng Chen, Xuliang Deng
With the increasing interest in hydroxyapatite (HA) nanostructures for use in biomedicine, the systematic evaluation of their potential effects on biological systems is becoming critically important. In this work, we report the in vitro cellular uptake, in vivo tissue distributions and toxicity of Tb(3+)-doped HA (HA-Tb) after short-, intermediate-, and long-term exposure. Transmission electron microscopy analysis indicated that HA-Tb was taken up by cells via vesicle endocytosis. Cell proliferation and cytotoxicity assay, combined with confocal laser scanning microscopy, indicated excellent cell viability with no changes in cell morphology at the examined doses...
June 23, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28644285/injectable-drug-approved-for-moderate-to-severe-eczema
#17
Diane S Aschenbrenner
No abstract text is available yet for this article.
July 2017: American Journal of Nursing
https://www.readbyqxmd.com/read/28644234/efficacy-of-sodium-hyaluronate-in-murine-diabetic-ocular-surface-diseases
#18
Guohu Di, Xia Qi, Xiaowen Zhao, Songmei Zhang, Qingjun Zhou
PURPOSE: To evaluate the efficacy of sodium hyaluronate (HA) eye drops for the treatment of diabetic ocular surface diseases in mice. METHODS: Male 6- to 8-week-old C57BL/6 mice underwent induction of type 1 diabetes with intraperitoneal injections of streptozotocin, with normal mice as the control. Topical 0.3% HA, 0.1% HA, 0.4% polyethylene glycol eye drops, and normal saline were administered to diabetic mice with an intact or debrided corneal epithelium. Normal saline was applied in the controls...
June 21, 2017: Cornea
https://www.readbyqxmd.com/read/28644177/a-case-of-intravesical-bacillus-calmette-guerin-related-endophthalmitis-and-retinitis-confirmed-with-retinal-biopsy
#19
Alison Huggins, Murtaza Adam, David Ehmann, Ralph C Eagle, Barry Malloy, Sunir J Garg
PURPOSE: To present a rare case of bilateral endogenous chorioretinitis and unilateral endophthalmitis due to Mycobacterium bovis in a patient who received intravesical bacillus Calmette-Guerin (BCG) treatment. METHODS: We present a case of a single male patient with bilateral endogenous chorioretinitis due to Mycobacterium bovis in a patient who received intravesical BCG, an attenuated strain of M. bovis widely used to treat superficial bladder cancer. The patient underwent intravitreal tap, vitrectomy, and chorioretinal biopsy with histologic examination...
June 20, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28644090/transdermal-administration-of-melatonin-coupled-to-cryopass-laser-treatment-as-noninvasive-therapy-for-prostate-cancer
#20
Laura Terraneo, Paola Bianciardi, Eleonora Virgili, Elena Finati, Michele Samaja, Rita Paroni
Melatonin, a pineal gland hormone, exerts oncostatic activity in several types of human cancer, including prostate, the most common neoplasia and the third most frequent cause of male cancer death in the developed world. The growth of androgen-sensitive LNCaP prostate cancer cells in mice is inhibited by 3 mg/kg/week melatonin (0.09 mg/mouse/week) delivered by i.p. injections, which is equivalent to a dose of 210 mg/week in humans. The aim of this study is to test an alternative noninvasive delivery route based on transdermal administration of melatonin onto the tumor area followed by cryopass-laser treatment...
November 2017: Drug Delivery
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