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https://www.readbyqxmd.com/read/28453913/bioprinting-of-biomimetic-skin-containing-melanocytes
#1
Daejin Min, Wonhye Lee, Il-Hong Bae, Tae Ryong Lee, Phillip Croce, Seung-Schik Yoo
This study reports a three-dimensional (3D) bioprinting technique that is capable of producing a full-thickness skin model containing pigmentation. Multiple layers of fibroblasts (FB)-containing collagen hydrogel precursor were printed and crosslinked through neutralization using sodium bicarbonate, constituting the dermal layer. Melanocytes (MC) and keratinocytes (KC) were sequentially printed on top of the dermal layer to induce skin pigmentation upon subsequent air-liquid interface culture. Histological analysis was performed not only to confirm the formation of distinct skin layers, but also to identify the presence of pigmentation...
April 28, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28448697/national-trends-in-antidepressant-benzodiazepine-and-other-sedative-hypnotic-treatment-of-older-adults-in-psychiatric-and-primary-care
#2
Donovan T Maust, Frederic C Blow, Ilse R Wiechers, Helen C Kales, Steven C Marcus
OBJECTIVE: To describe how use of antidepressants, benzodiazepines, and other anxiolytic/sedative-hypnotics among older adults (age ≥ 65 years) has changed over time among visits to primary care providers and psychiatrists. METHODS: Data were from the National Ambulatory Medical Care Survey (years 2003-2005 and 2010-2012), a nationally representative cross-section of outpatient physician visits. Analysis focused on visits to primary care providers (n = 14,282) and psychiatrists (n = 1,095) at which an antidepressant, benzodiazepine, or other anxiolytic/sedative-hypnotic was prescribed, which were stratified by demographic and clinical characteristic (including ICD-9-CM diagnosis) and compared across study intervals...
April 2017: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/28447646/a-130-000-year-old-archaeological-site-in-southern-california-usa
#3
Steven R Holen, Thomas A Deméré, Daniel C Fisher, Richard Fullagar, James B Paces, George T Jefferson, Jared M Beeton, Richard A Cerutti, Adam N Rountrey, Lawrence Vescera, Kathleen A Holen
The earliest dispersal of humans into North America is a contentious subject, and proposed early sites are required to meet the following criteria for acceptance: (1) archaeological evidence is found in a clearly defined and undisturbed geologic context; (2) age is determined by reliable radiometric dating; (3) multiple lines of evidence from interdisciplinary studies provide consistent results; and (4) unquestionable artefacts are found in primary context. Here we describe the Cerutti Mastodon (CM) site, an archaeological site from the early late Pleistocene epoch, where in situ hammerstones and stone anvils occur in spatio-temporal association with fragmentary remains of a single mastodon (Mammut americanum)...
April 26, 2017: Nature
https://www.readbyqxmd.com/read/28444148/risk-of-acute-myocardial-infarction-among-hcv-and-hcv-men-at-various-lipid-levels-results-from-erchives
#4
Adeel A Butt, Peng Yan, Kara W Chew, Judith Currier, Kathleen Corey, Raymond T Chung, Ashfaq Shuaib, Abdul-Badi Abou-Samra, Javed Butler, Matthew S Freiberg
Background: Risk of AMI among HCV+ versus HCV- persons with similar lipid levels is unknown. We determined incident AMI rates among HCV+ and HCV- men among various lipid strata. Methods: We created a propensity score matched (PSM) cohort, and a low cardiovascular disease (CVD) risk cohort. Primary outcome was incident AMI rates by HCV status in each lipid strata using National Cholesterol Program guidelines for lipid strata. Results: We identified 85,863 HCV+ and HCV- men in the PSM population...
April 24, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28442438/dorsal-fin-development-in-flounder-paralichthys-olivaceus-bud-formation-and-its-cellular-origin
#5
Jie Chen, Xiaoyu Liu, Xiaohua Yao, Fei Gao, Baolong Bao
The development of the median fin has not been investigated extensively in teleosts, although in other fishes it has been proposed that it involves the same genetic programs operating in the paired appendages. Adult median fins develop from the larval bud; therefore an investigation of fin bud formation and its cellular origin is essential to understanding the maturation mechanisms. In Paralichthys olivaceus, skeletogenesis proceeds from an anterior to posterior direction providing a good opportunity to study the formation of dorsal fin bud...
April 22, 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/28442293/effect-of-appropriate-combination-therapy-on-mortality-of-patients-with-bloodstream-infections-due-to-carbapenemase-producing-enterobacteriaceae-increment-a-retrospective-cohort-study
#6
Belén Gutiérrez-Gutiérrez, Elena Salamanca, Marina de Cueto, Po-Ren Hsueh, Pierluigi Viale, José Ramón Paño-Pardo, Mario Venditti, Mario Tumbarello, George Daikos, Rafael Cantón, Yohei Doi, Felipe Francisco Tuon, Ilias Karaiskos, Elena Pérez-Nadales, Mitchell J Schwaber, Özlem Kurt Azap, Maria Souli, Emmanuel Roilides, Spyros Pournaras, Murat Akova, Federico Pérez, Joaquín Bermejo, Antonio Oliver, Manel Almela, Warren Lowman, Benito Almirante, Robert A Bonomo, Yehuda Carmeli, David L Paterson, Alvaro Pascual, Jesús Rodríguez-Baño
BACKGROUND: The best available treatment against carbapenemase-producing Enterobacteriaceae (CPE) is unknown. The objective of this study was to investigate the effect of appropriate therapy and of appropriate combination therapy on mortality of patients with bloodstream infections (BSIs) due to CPE. METHODS: In this retrospective cohort study, we included patients with clinically significant monomicrobial BSIs due to CPE from the INCREMENT cohort, recruited from 26 tertiary hospitals in ten countries...
April 21, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28441468/histological-study-of-white-rhinoceros-integument
#7
Jeffrey H Plochocki, Saul Ruiz, José R Rodriguez-Sosa, Margaret I Hall
In this study, we report findings from a microscopic analysis of the white rhinoceros (Ceratotherium simum) integumentary ultrastructure. Skin samples from the cheek, shoulder, flank and rump were taken from a 46-year-old female southern white rhinoceros and examined using H&E and elastic histological stains. The epidermis was thickest in the flank (1.003 mm) followed by the rump, cheek and shoulder. The stratum corneum comprised more than half the epidermal thickness. Numerous melanin granules were found in the basal and spinosum layers...
2017: PloS One
https://www.readbyqxmd.com/read/28441266/safety-of-the-inactivated-japanese-encephalitis-virus-vaccine-ixiaro%C3%A2-in-children-an-open-label-randomized-active-controlled-phase-3-study
#8
Katrin L Dubischar, Vera Kadlecek, Benjamin Sablan, Charissa Fay Borja-Tabora, Salvacion Gatchalian, Susanne Eder-Lingelbach, Zsuzsanna Mueller, Kerstin Westritschnig
BACKGROUND: Japanese encephalitis (JE) remains a serious health concern in Asian countries and has sporadically affected pediatric travelers. In the present study we monitored the safety profile of the JE virus (JEV) vaccine IXIARO in a pediatric population. METHODS: We randomized 1869 children between the age of 2 months and 17 years in an age-stratified manner to vaccination with IXIARO or one of the control vaccines, Prevnar and HAVRIX 720. Adverse events (AEs) (unsolicited and solicited local and systemic adverse events), serious AEs and medically-attended AEs were assessed up to Day 56 and Month 7 after the first dose...
April 24, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28440411/effects-of-long%C3%A2-term-post%C3%A2-ischemic-treadmill-exercise-on-gliosis-in-the-aged-gerbil-hippocampus-induced-by-transient-cerebral-ischemia
#9
Ji Hyeon Ahn, Myoung Cheol Shin, Joon Ha Park, In Hye Kim, Jeong-Hwi Cho, Tae-Kyeong Lee, Jae-Chul Lee, Bai Hui Chen, Bich Na Shin, Hyun-Jin Tae, Jinseu Park, Soo Young Choi, Yun Lyul Lee, Dae Won Kim, Yang Hee Kim, Moo-Ho Won, Jun Hwi Cho
Therapeutic exercise is an integral component of the rehabilitation of patients who have suffered a stroke. The objective of the present study was to use immunohistochemistry to investigate the effects of post‑ischemic exercise on neuronal damage or death and gliosis in the aged gerbil hippocampus following transient cerebral ischemia. Aged gerbils (male; age, 22‑24 months) underwent ischemia and were subjected to treadmill exercise for 1 or 4 weeks. Neuronal death was detected in the stratum pyramidale of the hippocampal CA1 region and in the polymorphic layer of the dentate gyrus using cresyl violet and Fluoro‑Jade B histofluorescence staining...
April 19, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28439170/non-calcifying-type-of-calcifying-epithelial-odontogenic-tumor-an-unusual-case-report-with-special-emphasis-on-histogenesis-of-calcifications
#10
Sravya Taneeru, Venkateswara Rao Guttikonda, Rajani Korlepara, Rajasekhar Gaddipati, Vinay Kumar Kundoor
Calcifying epithelial odontogenic tumour also known as Pindborg tumour, is a rare benign odontogenic neoplasm of locally aggressive behavior. It is thought to arise from the epithelial element of the enamel origin which are reminiscent of the cells in the stratum intermedium layer of enamel organ in tooth development. The tumour is characterized histologically by the presence of polygonal epithelial cells, calcifications and eosinophilic deposits resembling amyloid. Non-calcifying epithelial odontogenic tumours are very rare and unusual...
June 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28434049/a-prospective-study-of-the-safety-and-efficacy-of-a-combined-bipolar-radiofrequency-intense-pulsed-light-and-infrared-diode-laser-treatment-for-global-facial-photoaging
#11
Min Jiang, Fang Yan, Mathew Avram, Zhong Lu
The clinical features of photoaging include: skin texture changes, laxity, rhytides, pigmentary changes, and vascular changes such as erythema and telangiectasias. In order to meet patients' increasing demands for improving all aspects of photoaging at one office visit, employing a multi-modality treatment for all aspects of photoaging has become increasingly desirable for the physician and patient alike. We examine a novel device that employs bipolar radiofrequency (RF), intense pulsed light (IPL), and infrared diode laser...
April 23, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28432615/fabrication-physicochemical-characterization-and-performance-evaluation-of-biodegradable-polymeric-microneedle-patch-system-for-enhanced-transcutaneous-flux-of-high-molecular-weight-therapeutics
#12
Viral Shah, Bijaya Krushna Choudhury
A revolutionary paradigm shift is being observed currently, towards the use of therapeutic biologics for disease management. The present research was focused on designing an efficient dosage form for transdermal delivery of α-choriogonadotropin (high molecular weight biologic), through biodegradable polymeric microneedles. Polyvinylpyrrolidone-based biodegradable microneedle arrays loaded with high molecular weight polypeptide, α-choriogonadotropin, were fabricated for its systemic delivery via transdermal route...
April 21, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28430185/phospholipase-c%C3%AE-1-regulates-p38-mapk-activity-and-skin-barrier-integrity
#13
Kaori Kanemaru, Yoshikazu Nakamura, Kengo Totoki, Takatsugu Fukuyama, Madoka Shoji, Hisae Kaneko, Kanako Shiratori, Atsuko Yoneda, Takafumi Inoue, Yoichiro Iwakura, Kenji Kabashima, Kiyoko Fukami
Keratinocytes undergo a unique type of programmed cell death known as cornification, which leads to the formation of the stratum corneum (SC), the main physical barrier of the epidermis. A defective epidermal barrier is a hallmark of the two most common inflammatory skin disorders, psoriasis, and atopic dermatitis. However, the detailed molecular mechanisms of skin barrier formation are not yet fully understood. Here, we showed that downregulation of phospholipase C (PLC) δ1, a Ca(2+)-mobilizing and phosphoinositide-metabolizing enzyme abundantly expressed in the epidermis, impairs the barrier functions of the SC...
April 21, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28426382/effectiveness-of-hand-washing-on-the-removal-of-iron-oxide-nanoparticles-from-human-skin-ex-vivo
#14
Nastassja A Lewinski, Aurélie Berthet, Lionel Maurizi, Antoine Eisenbeis, Nancy B Hopf
In this study, the effectiveness of washing with soap and water in removing nanoparticles from exposed skin was investigated. Dry, nanoscale hematite (α-Fe2O3) or maghemite (γ-Fe2O3) powder, with primary particle diameters between 20-30 nm, were applied to two samples each of fresh and frozen ex vivo human skin in two independent experiments. The permeation of nanoparticles through skin, and the removal of nanoparticles after washing with soap and water were investigated. Bare iron oxide nanoparticles remained primarily on the surface of the skin, without penetrating beyond the stratum corneum...
April 20, 2017: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/28417584/ir-spectroscopy-of-skin-in%C3%A2-vivo-optimal-skin-sites-and-properties-for-non-invasive-glucose-measurement-by-photoacoustic-and-photothermal-spectroscopy
#15
Alexander Bauer, Otto Hertzberg, Arne Küderle, Dominik Strobel, Miguel A Pleitez, Werner Mäntele
We have reported two methods to analyze glucose in the interstitial fluid of skin based on mid-infrared excitation with a tunable quantum cascade laser and photoacoustic or photothermal detection. These methods were evaluated for optimum skin locations to obtain reproducible glucose information. The lower part of the arm, the hypothenar, the tips of the index finger and the thumb were tested. The thumb appears to be the optimal skin location, followed by the index finger. Basic requirements for an optimum site are good capillary blood perfusion, low Stratum corneum thickness and the absence of fat layers...
April 18, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/28416710/compliance-with-uruguay-s-single-presentation-requirement
#16
Teresa DeAtley, Eduardo Bianco, Kevin Welding, Joanna E Cohen
INTRODUCTION: Tobacco companies vary pack colours, designs, descriptors, flavours and brand names on cigarette packs to target a multitude of consumers. These different brand variants can falsely imply that some brand variants are less harmful than others. Uruguay is the only country that requires cigarette companies to adhere to a single presentation (one brand variant) per brand family. METHODS: An existing, systematic pack purchasing protocol was adapted for data collection...
April 17, 2017: Tobacco Control
https://www.readbyqxmd.com/read/28413056/impact-of-scalp-location-on-survival-in-head-and-neck-melanoma-a-retrospective-cohort-study
#17
Charles Xie, Yan Pan, Catriona McLean, Victoria Mar, Rory Wolfe, John Kelly
BACKGROUND: Scalp melanomas have more aggressive clinicopathological features than other melanomas and mortality rates more than twice that of melanoma located elsewhere. OBJECTIVE: We sought to describe the survival of patients with scalp melanoma versus other cutaneous head and neck melanoma (CHNM), and explore a possible independent negative impact of scalp location on CHNM survival. METHODS: A retrospective cohort study was performed of all invasive primary CHNM cases seen at a tertiary referral center over a 20-year period...
March 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28411056/development-and-evaluation-of-resveratrol-vitamin-e-and-epigallocatechin-gallate-loaded-lipid-nanoparticles-for-skin-care-applications
#18
Jin Chen, Ning Wei, Maria Lopez-Garcia, Dianna Ambrose, Jason Lee, Colin Annelin, Teresa Peterson
Solid lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC) have been studied as potential carriers for both dermal and transdermal drug delivery. SLN contain lipid droplets that are fully crystallized and have a highly-ordered crystalline structure. NLC are modified SLN in which the lipid phase contains both solid and liquid lipids at room temperature. SLN and NLC are thought to combine the advantages of polymeric particles, liposomes and emulsions. Therefore they provide high encapsulation percentages, better protection for incorporated actives and allow for control of desired release profile...
April 11, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28410089/mortality-and-morbidity-after-laparoscopic-surgery-in-children-with-and-without-congenital-heart-disease
#19
David I Chu, Jonathan M Tan, Peter Mattei, Andrew T Costarino, Joseph W Rossano, Gregory E Tasian
OBJECTIVES: To determine the risk of morbidity and mortality after laparoscopic surgery among children with congenital heart disease (CHD). STUDY DESIGN: Cohort study using the 2013-2014 National Surgical Quality Improvement Program-Pediatrics, which prospectively collected data at 56 and 64 hospitals in 2013 and 2014, respectively. Primary exposure was CHD. Primary outcome was overall in-hospital postoperative mortality. Secondary outcomes included 30-day mortality and 30-day morbidity (any nondeath adverse event)...
March 3, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28408051/beyond-body-mass-index-is-the-body-cell-mass-index-bcmi-a-useful-prognostic-factor-to-describe-nutritional-inflammation-and-muscle-mass-status-in-hospitalized-elderly-body-cell-mass-index-links-in-elderly
#20
Mariangela Rondanelli, Jacopo Talluri, Gabriella Peroni, Chiara Donelli, Fabio Guerriero, Krizia Ferrini, Emilia Riggi, Elisabetta Sauta, Simone Perna, Davide Guido
BACKGROUND & AIM: The aim of this study was to establish the effectiveness of Body Cell Mass Index (BCMI) as a prognostic index of (mal)nutrition, inflammation and muscle mass status in the elderly. METHODS: A cross-sectional observational study has been conducted on 114 elderly patients (80 women and 34 men), with mean age equal to 81.07 ± 6.18 years. We performed a multivariate regression model by Structural Equation Modelling (SEM) framework. We detected the effects over a Mini Nutritional Assessment (MNA) stratification, by performing a multi-group multivariate regression model (via SEM) in two MNA nutritional strata, less and bigger (or equal) than 17...
March 24, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
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