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https://www.readbyqxmd.com/read/28821185/phylogeography-and-ecological-niche-modeling-of-the-desert-iguana-dipsosaurus-dorsalis-baird-girard-1852-in-the-baja-california-peninsula
#1
Tania Valdivia-Carrillo, Francisco J García-De León, Ma Carmen Blázquez, Carina Gutiérrez-Flores, Patricia González Zamorano
Understanding the factors that explain the patterns of genetic structure or phylogeographic breaks at an intraspecific level is key to inferring the mechanisms of population differentiation in its early stages. These topics have been well studied in the Baja California region, with vicariance and the dispersal ability of individuals being the prevailing hypothesis for phylogeographic breaks. In this study, we evaluated the phylogeographic patterns in the desert iguana (Dipsosaurus dorsalis), a species with a recent history in the region and spatial variation in life history traits...
September 1, 2017: Journal of Heredity
https://www.readbyqxmd.com/read/28821154/design-and-characterization-of-a-biocompatible-physical-hydrogel-based-on-scleroglucan-for-topical-drug-delivery
#2
Patrizia Paolicelli, Gabriele Varani, Settimio Pacelli, Elisa Ogliani, Martina Nardoni, Stefania Petralito, Alessandra Adrover, Maria Antonietta Casadei
Physical hydrogels of a high-carboxymethylated derivative of scleroglucan (Scl-CM300) were investigated as potential systems for topical drug delivery using three different therapeutic molecules (fluconazole, diclofenac and betamethasone). Rheological tests were carried out on drug-loaded hydrogels along with in-vitro release studies in a vertical Franz cell, in order to investigate if and how different drugs may influence the rheological and release properties of Scl-CM300 hydrogels. Experimental results and theoretical modeling highlighted that, in the absence of drug/polymer interactions (as for fluconazole and betamethasone) Scl-CM300 matrices offer negligible resistance to drug diffusion and a Fickian transport model can be adopted to estimate the effective diffusion coefficient in the swollen hydrogel...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28820978/concentration-addition-and-independent-action-model-which-is-better-in-predicting-the-toxicity-for-metal-mixtures-on-zebrafish-larvae
#3
Yongfei Gao, Jianfeng Feng, Lili Kang, Xin Xu, Lin Zhu
The joint toxicity of chemical mixtures has emerged as a popular topic, particularly on the additive and potential synergistic actions of environmental mixtures. We investigated the 24h toxicity of Cu-Zn, Cu-Cd, and Cu-Pb and 96h toxicity of Cd-Pb binary mixtures on the survival of zebrafish larvae. Joint toxicity was predicted and compared using the concentration addition (CA) and independent action (IA) models with different assumptions in the toxic action mode in toxicodynamic processes through single and binary metal mixture tests...
August 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28820850/ultrasonographic-findings-in-the-vitreous-of-patients-with-age-related-macular-degeneration-treated-with-intravitreal-anti-vascular-endothelial-growth-factor-injections
#4
Tamara Mato-Gondelle, Manuel F Bande, Laura Paniagua, María J Rodríguez-Cid, Maximino Abraldes, Maribel Fernández, María J Blanco-Teijeiro, Antonio Piñeiro
PURPOSE: We aimed to assess the relationship of repeated intravitreal injection of anti-vascular endothelial growth factor, the main treatment for exudative age-related macular degeneration, with changes in vitreous ultrasonographic findings in patients with age-related macular degeneration. METHODS: We retrospectively collected data from 41 patients (41 age-related macular degeneration eyes, 41 control eyes) on age, sex, number of injections, and type of anti-vascular endothelial growth factor (ranibizumab, aflibercept)...
August 16, 2017: Retina
https://www.readbyqxmd.com/read/28820663/what-men-who-have-sex-with-men-in-peru-want-in-internet-based-sexual-health-information
#5
Luis Menacho
Objectives We aimed to gather information among gay men regarding their preferences for online sexual health information. Methods 1,160 Peruvian MSM, 18 years or older, completed an online survey hosted on www.tunexo.org . Results The mean age was 26.8 years. Around 90% had post-high school education. The self-reported HIV prevalence was 12.3%. The acceptability of sexual health content was greater in the most highly educated group. The highest rated topics and services of interest were those related to improving sexual and mental health...
August 18, 2017: Journal of Homosexuality
https://www.readbyqxmd.com/read/28820646/consequences-of-puberty-on-efficacy-of-intraocular-pressure-lowering-drugs-in-male-dutch-belted-rabbits
#6
Cassandra L Hays, Kingsley C Okafor, Shan Fan, Robin High, Dhirendra P Singh, Carol B Toris
PURPOSE: To investigate the changes in intraocular pressure (IOP), aqueous flow, and outflow facility, as well as efficacy of IOP-lowering drugs before and after sexual development in rabbits. METHODS: Male Dutch-belted rabbits were studied at night between the ages of 8 and 44 weeks. During these times, body weight, testicular volume, and serum testosterone were measured to monitor sexual maturity. Ocular measurements included anterior chamber depth, central corneal thickness, IOP, aqueous flow, and outflow facility...
August 18, 2017: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28820632/media-presentation-of-breastfeeding-beliefs-in-newspapers
#7
Rose Hitt, Jie Zhuang, Jennifer Anderson
Despite numerous health benefits for babies and mothers, many women do not either initiate or continue breastfeeding for the recommended duration, and increasing breastfeeding is a national priority. It is important to understand media messages on the topic, given that breastfeeding is influenced by many environmental factors and that perceived norms, social support, and perceptions of difficulties predict breastfeeding. The current study analyzes how media covers (1) breastfeeding in general, (2) public breastfeeding, and (3) extended breastfeeding (past 1 year)...
August 18, 2017: Health Communication
https://www.readbyqxmd.com/read/28820514/topical-opioids-and-antimicrobials-for-the-management-of-pain-infection-and-infection-related-odors-in-malignant-wounds-a-systematic-review
#8
Kathleen Finlayson, Laisa Teleni, Alexandra L McCarthy
PROBLEM IDENTIFICATION: Patients with malignant wounds report pain, distress from odor and exudate, decreased self-esteem, and poor quality of life. This systematic review explores topical opioids, antimicrobials, and odor-reducing agents for preventing or managing malignant wound pain, infection, and odor.
. LITERATURE SEARCH: MEDLINE®, EMBASE, the Cochrane Library, CINAHL®, and reference lists were searched to identify relevant studies.
. DATA EVALUATION: Eligible study designs included interventions with pre- and postintervention data...
September 1, 2017: Oncology Nursing Forum
https://www.readbyqxmd.com/read/28820164/cyclophotocoagulation-induced-sympathetic-ophthalmia-in-a-coats-disease-patient-supported-by-histopathology-and-immunohistochemistry
#9
Pritam Bawankar, Dipankar Das, Shahinur Tayab, Ganesh Chandra Kuri, Jnanankar Medhi, Manabjyoti Barman, Ronel Soibam, Harsha Bhattacharjee, Panna Deka, Diva Kant Misra, Shriya Dhar
We describe a case of a 13-year-old male patient of Coats' disease who developed sympathetic ophthalmia (SO) following contact diode laser cyclophotocoagulation. There was no history of invasive surgery or any perforating injuries preceding cyclodestructive therapy. The eye had neovascular glaucoma secondary to Coats' disease, which was treated once with contact cyclophotocoagulation. Subsequently, the intraocular pressure slowly decreased, and the eye became phthisical. Intraocular inflammation developed in the fellow eye and SO was suspected, which was confirmed by characteristic findings seen on fluorescein angiography...
August 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28820069/apixaban-effective-and-safe-in-preventing-thromboembolic-events-in-patients-with-atrial-fibrillation-and-renal-failure
#10
Francesca Cortese, Pietro Scicchitano, Michele Gesualdo, Gabriella Ricci, Santa Carbonara, Carlo Franchini, Brigida Immacolata Pia Schiavone, Filomena Corbo, Marco Matteo Ciccone
Thromboembolic events, principally stroke, represent among the leading causes of morbidity and mortality of subjects with atrial fibrillation, with an incidence about 5 times higher compared to healthy subjects. Chronic kidney disease, frequently associated with atrial fibrillation, determines itself a further increase of thromboembolic events, bleeding and mortality. In addition, the presence of renal failure complicates the pharmacological management of these patients, mainly due to the side effects of antiarrhythmic and anticoagulant drugs with renal excretion, due to their accumulation...
August 17, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28819979/the-influence-of-a-novel-dimeric-ceramide-molecule-on-the-nanostructure-and-the-thermotropic-phase-behavior-of-a-stratum-corneum-model-mixture
#11
Sören Stahlberg, Adina Eichner, Stefan Sonnenberger, Andrej Kovacik, Stefan Lange, Thomas Schmitt, Bruno Demé, Thomas Hauss, Bodo Dobner, Reinhard H H Neubert, Daniel Huster
The stratum corneum (SC) is the outermost layer of the skin and composed of a multilayered assembly of mostly ceramids (Cer), free fatty acids, cholesterol (Chol), and cholesterol sulphate (Chol-S). Due to the tight packing of these lipids, the SC features unique barrier properties defending the skin from environmental influences. Under pathological conditions, where the skin barrier function is compromised, topical application of molecules that rigidify the SC may lead to a restored barrier function. To this end, molecules are required that incorporate into the SC and bring back the original rigidity of the skin barrier...
August 18, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28819932/twice-daily-vs-once-daily-dosing-with-0-075-bromfenac-in-durasite-outcomes-from-a-14-day-phase-2-study
#12
William Trattler, Kamran Hosseini
INTRODUCTION: Bromfenac is a well-known topical ophthalmic nonsteroidal anti-inflammatory drug (NSAID) that is commercialized in the USA and other regions of the world. A new formulation, 0.075% bromfenac in DuraSite®, was developed to treat postoperative inflammation and reduce pain in patients who have undergone cataract surgery. We hypothesized that efficacy and safety would be enhanced with twice-daily (BID) dosing compared to once-daily (QD) dosing. METHODS: This was a multicenter, double-masked, comparative study in which 40 and 45 subjects were randomized to groups receiving BID dosing and QD dosing, respectively...
August 17, 2017: Ophthalmology and Therapy
https://www.readbyqxmd.com/read/28819928/development-of-a-rating-tool-for-mobile-cancer-apps-information-analysis-and-formal-and-content-related-evaluation-of-selected-cancer-apps
#13
Cathleen Böhme, Marc Baron von Osthoff, Katrin Frey, Jutta Hübner
Mobile apps are offered in large numbers and have different qualities. The aim of this article was to develop a rating tool based on formal and content-related criteria for the assessment of cancer apps and to test its applicability on apps. After a thorough analysis of the literature, we developed a specific rating tool for cancer apps based on the MARS (mobile app rating system) and a rating tool for cancer websites. This instrument was applied to apps freely available in stores and focusing on some cancer topic...
August 17, 2017: Journal of Cancer Education: the Official Journal of the American Association for Cancer Education
https://www.readbyqxmd.com/read/28819253/majority-of-human-traits-do-not-show-evidence-for-sex-specific-genetic-and-environmental-effects
#14
Sven Stringer, Tinca Polderman, Danielle Posthuma
Sex differences in the etiology of human trait variation are a major topic of interest in the social and medical sciences given its far-reaching implications. For example, in genetic research, the presence of sex-specific effects would require sex-stratified analysis, and in clinical practice sex-specific treatments would be warranted. Here, we present a study of 2,335,920 twin pairs, in which we tested sex differences in genetic and environmental contributions to variation in 2,608 reported human traits, clustered in 50 trait categories...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819134/long-term-glaucoma-drug-delivery-using-a-topically-retained-gel-microsphere-eye-drop
#15
Morgan V Fedorchak, Ian P Conner, Joel S Schuman, Anthony Cugini, Steven R Little
The purpose of this study was to characterize and determine the efficacy of a long-term, non-invasive gel/microsphere (GMS) eye drop for glaucoma. This novel drug delivery system is comprised of a thermoresponsive hydrogel carrier and drug-loaded polymer microspheres. In vitro release of brimonidine from the GMS drops and gel properties were quantified. A single brimonidine-loaded GMS drop was administered to 5 normotensive rabbits and intraocular pressure (IOP) was monitored for 28 days. Here we report that IOP reduction in rabbits receiving a single brimonidine GMS drop was comparable to that of rabbits receiving twice daily, standard brimonidine drops...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819073/-recent-topics-in-autosomal-dominantly-inherited-spinocerebellar-ataxias
#16
Yoshio Ikeda
Among various dominantly inherited spinocerebellar ataxias (SCAs), it is revealed that the molecular mechanism of so called "non-coding microsatellite repeat expansion disorders" was involved in RNA gain-of-function as well as "RAN translation". Recently, the "polyglutamine disorders" caused by the coding CAG repeat expansions were also clarified that they were involved in RNA mechanism or RAN translation. The common molecular mechanism might exist between SCAs of which the repeat expansions were located in both coding and non-coding regions...
August 2017: Brain and Nerve, Shinkei Kenkyū No Shinpo
https://www.readbyqxmd.com/read/28819010/new-insight-on-the-s100a1-stip1-complex-highlights-the-important-relationship-between-allostery-and-entropy-in-protein-function
#17
Nathaniel V Nucci
Calcium signaling serves as a nexus of many vital cellular processes. Of particular importance is the role the calcium signaling plays in the prevention of protein misfolding, and the S100 family of calcium-binding proteins is a key player in this pathway. While the S100 proteins carry out a range of roles, the interaction of S100A1 and the stress-inducible phosphoprotein 1 (STIP1) has been shown to be particularly important. A recent study by Maciejewski et al. in Biochemical Journal (Biochemical Journal (2017) 474, 1853-1866) revealed new insights into the nature of the S100A1-STIP1 interaction...
August 17, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28818993/nuclear-medicine-training-what-now
#18
David A Mankoff, Daniel A Pryma
While the multi-disciplinary nature of nuclear medicine and clinical molecular imaging is a key strength of the specialty, the breadth of disciplines involved in the practice of nuclear medicine creates challenges for education and training. The evolution of nuclear medicine science and technology - and the practice of clinical molecular imaging and theranostics - has created a need for changes in the approach to specialty training. The broader US community of imaging physicians has been slow to accept this change, in good part due to historical divides between the nuclear medicine and radiology communities...
August 17, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28818963/uspstf-is-unable-to-recommend-for-or-against-lipid-screening-to-identify-multifactorial-dyslipidaemia-in-childhood-no-recommendation-is-not-without-consequences
#19
REVIEW
Sarah D de Ferranti, Radley C Sheldrick
Paediatric lipid screening has been recommended for decades to identify youth at increased risk for early atherosclerotic disease but is controversial and not universally adopted. A 2016 review by the US Preventive Services Task Force (USPSTF) found inadequate evidence to recommend for or against lipid screening in childhood. In this Perspective article, we examine this controversial and important topic more broadly. We consider whether the USPSTF framework is asking the right questions, and whether the answers to these questions should be valued equally, whether the USPSTF questions are answerable and by what types of evidence and whether the burden of proof is appropriate...
August 17, 2017: Evidence-based Medicine
https://www.readbyqxmd.com/read/28818775/%C3%AE-bisabolol-improves-5-aminolevulinic-acid-retention-in-buccal-tissues-potential-application-in-the-photodynamic-therapy-of-oral-cancer
#20
Nathany Prado Quintanilha, Irina Dos Santos Miranda Costa, Mônica Freiman de Souza Ramos, Nádia Campos de Oliveira Miguel, Maria Bernadete Riemma Pierre
CONTEXT: 5-Aminolevulinic acid (5-ALA) is a prodrug used in photodynamic therapy (PDT) of tumors, including cancer of the oral mucosa. 5-ALA poorly penetrates oral tissues due to its high hydrophilicity, which impairs its local effects in PDT. OBJECTIVES: To examine whether α-bisabolol (α-Bis) influences the 5-ALA permeability in the porcine buccal mucosa, to an extent that improves its application in PDT (which requires low permeation and high retention in the buccal mucosa)...
August 8, 2017: Journal of Photochemistry and Photobiology. B, Biology
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