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https://www.readbyqxmd.com/read/29128639/degradation-of-pesticides-with-rsdl-%C3%A2-reactive-skin-decontamination-lotion-kit-lotion-lc-ms-investigation
#1
Messele Fentabil, Mulu Gebremedhin, J Garfield Purdon, Laura Cochrane, Virginia Streusand Goldman
This study examined the degradation of organophosphate (OP) and carbamate pesticides using RSDL(®) (Reactive Skin Decontamination Lotion Kit) lotion. Degradation occurs from a nucleophilic substitution (SN) reaction between an ingredient in the RSDL lotion, potassium 2,3-butanedione monoximate (KBDO), with susceptible sites in the pesticides. Evaluation at several molar ratios of KBDO:test articles using liquid chromatography-mass spectrometry (LC-MS) techniques was performed. The OP test articles, parathion, paraoxon, parathion-methyl, paraoxon-methyl and chlorpyrifos were effectively degraded at molar ratios of four and above in less than 6minutes contact time...
November 8, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/29124983/comparative-toxicological-evaluation-of-nonylphenol-and-nonylphenol-polyethoxylates-using-human-keratinocytes
#2
Hyungjoo Kim, Sunhwa Oh, Myung Chan Gye, Incheol Shin
Nonylphenol polyethoxylates (NPEOs) are a major group of nonionic surfactants widely used in various detergents, cleaners, plastics, papers, and agro-chemical products. Nonylphenol (NP), which is a final degraded metabolite derived from NPEOs, has been reported as an endocrine disrupter, known to mimic or disturb reproductive hormone functions. Concern about the hazards of NP and NPEOs has generated legal restrictions and action plans worldwide. Considering the fact that NP and NPEOs are majorly used in the production of products such as detergents, shampoos, and cosmetics which frequently come into contact with the skin, we investigated the effects of NP and NPEOs on a human keratinocyte cell line (HaCaT)...
November 10, 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/29124400/characterization-of-m1-and-m2-polarization-of-macrophages-in-vascularized-human-dermo-epidermal-skin-substitutes-in-vivo
#3
Agnes S Klar, Katarzyna Michalak-Mićka, Thomas Biedermann, Claudia Simmen-Meuli, Ernst Reichmann, Martin Meuli
AIMS AND OBJECTIVES: Vascularized bio-engineered human dermo-epidermal skin substitutes (vascDESS) hold promise for treating burn patients, including those with severe full-thickness wounds. We have previously shown that vascDESS promote wound healing by enhanced influx of macrophages and granulocytes. Immediately following transplantation, macrophages infiltrate the graft and differentiate into a pro-inflammatory (M1) or a pro-healing M2 phenotype. The aim of this study was to characterize the activation state of macrophages infiltrating skin transplants at distinct time points following transplantation...
November 9, 2017: Pediatric Surgery International
https://www.readbyqxmd.com/read/29122469/sensitivity-of-whole-exome-sequencing-in-detecting-infantile-and-late-onset-pompe-disease
#4
Mari Mori, Gloria Haskell, Zoheb Kazi, Xiaolin Zhu, Stephanie M DeArmey, Jennifer L Goldstein, Deeksha Bali, Catherine Rehder, Elizabeth T Cirulli, Priya S Kishnani
Pompe disease is a metabolic myopathy with a wide spectrum of clinical presentation. The gold-standard diagnostic test is acid alpha-glucosidase assay on skin fibroblasts, muscle or blood. Identification of two GAA pathogenic variants in-trans is confirmatory. Optimal effectiveness of enzyme replacement therapy hinges on early diagnosis, which is challenging in late-onset form of the disease due to non-specific presentation. Next-generation sequencing-based panels effectively facilitate diagnosis, but the sensitivity of whole-exome sequencing (WES) in detecting pathogenic GAA variants remains unknown...
October 17, 2017: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/29115054/comparison-of-human-umbilical-cord-blood-derived-mesenchymal-stem-cells-with-healthy-fibroblasts-on-wound-healing-activity-of-diabetic-fibroblasts
#5
Jae-A Jung, Young-Don Yoon, Hyup-Woo Lee, So-Ra Kang, Seung-Kyu Han
Various types of skin substitutes composed of fibroblasts and/or keratinocytes have been used for the treatment of diabetic ulcers. However, the effects have generally not been very dramatic. Recently, human umbilical cord blood-derived mesenchymal stromal cells (hUCB-MSCs) have been commercialised for cartilage repair as a first cell therapy product using allogeneic stem cells. In a previous pilot study, we reported that hUCB-MSCs have a superior wound-healing capability compared with fibroblasts. The present study was designed to compare the treatment effect of hUCB-MSCs with that of fibroblasts on the diabetic wound healing in vitro...
November 7, 2017: International Wound Journal
https://www.readbyqxmd.com/read/29109267/protein-engineering-of-the-chemokine-ccl20-prevents-psoriasiform-dermatitis-in-an-il-23-dependent-murine-model
#6
A E Getschman, Y Imai, O Larsen, F C Peterson, X Wu, M M Rosenkilde, S T Hwang, B F Volkman
Psoriasis is a chronic inflammatory skin disease characterized by the infiltration of T cell and other immune cells to the skin in response to injury or autoantigens. Conventional, as well as unconventional, γδ T cells are recruited to the dermis and epidermis by CCL20 and other chemokines. Together with its receptor CCR6, CCL20 plays a critical role in the development of psoriasiform dermatitis in mouse models. We screened a panel of CCL20 variants designed to form dimers stabilized by intermolecular disulfide bonds...
November 6, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29106911/stem-cells-niches-and-scaffolds-applications-to-burns-and-wound-care
#7
Suzanne M Watt, Jonathan M Pleat
The importance of skin to survival, and the devastating physical and psychological consequences of scarring following reparative healing of extensive or difficult to heal human wounds, cannot be disputed. We discuss the significant challenges faced by patients and healthcare providers alike in treating these wounds. New state of the art technologies have provided remarkable insights into the role of skin stem and progenitor cells and their niches in maintaining skin homeostasis and in reparative wound healing...
October 26, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/29102971/delayed-onset-heparin-induced-skin-necrosis-a-rare-complication-of-perioperative-heparin-therapy
#8
Weh Kiat Gan
An uncommon case of delayed-onset dalteparin-induced skin necrosis in an 83-year-old Caucasian female patient associated with heparin-induced thrombocytopaenia (HIT) presenting on day 30 following dalteparin therapy is reported. Investigations revealed mild thrombocytopaenia with normal protein C, protein S, coagulation screen and positive test for heparin-platelet factor-4 antibody. Clinical diagnosis of heparin-induced skin necrosis with HIT was made. Dalteparin injection was discontinued promptly and substituted with fondaparinux therapy...
November 3, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29102755/matriderm%C3%A2-for-the-management-of-scalp-necrosis-following-surgical-treatment-of-a-giant-parietal-encephalocele-case-report
#9
M D Vilela, Has Pedrosa, Fd Sampaio, L J Carneiro
BACKGROUND: management of encephaloceles is challenging when massive brain herniation is present. In such instances, an expansile cranioplasty may be attempted so as to preserve some herniated brain tissue. Complications such as wound dehiscence, CSF leak and scalp necrosis are postoperative concerns. The treatment of scalp necrosis with dural and brain exposure is certainly a challenge, due to the complexity of flap techniques in such a young age. Herein we describe the use of a novel technique for the management of a scalp necrosis and dehiscence in an infant...
November 1, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29094203/creation-of-miniature-pig-model-of-human-waardenburg-syndrome-type-2a-by-enu-mutagenesis
#10
Tang Hai, Weiwei Guo, Jing Yao, Chunwei Cao, Ailing Luo, Meng Qi, Xianlong Wang, Xiao Wang, Jiaojiao Huang, Ying Zhang, Hongyong Zhang, Dayu Wang, Haitao Shang, Qianlong Hong, Rui Zhang, Qitao Jia, Qiantao Zheng, Guosong Qin, Yongshun Li, Tao Zhang, Weiwu Jin, Zheng-Yi Chen, Hongmei Wang, Qi Zhou, Anming Meng, Hong Wei, Shiming Yang, Jianguo Zhao
Human Waardenburg syndrome 2A (WS2A) is a dominant hearing loss (HL) syndrome caused by mutations in the microphthalmia-associated transcription factor (MITF) gene. In mouse models with MITF mutations, WS2A is transmitted in a recessive pattern, which limits the study of hearing loss (HL) pathology. In the current study, we performed ENU (ethylnitrosourea) mutagenesis that resulted in substituting a conserved lysine with a serine (p. L247S) in the DNA-binding domain of the MITF gene to generate a novel miniature pig model of WS2A...
November 1, 2017: Human Genetics
https://www.readbyqxmd.com/read/29075641/expression-of-c4-4a-in-an-in-vitro-human-tissue-engineered-skin-model
#11
Benedikte Jacobsen, Danielle Larouche, Olivier Rochette-Drouin, Michael Ploug, Lucie Germain
A multi-LU-domain-containing protein denoted C4.4A exhibits a tightly regulated membrane-associated expression in the suprabasal layers of stratified squamous epithelia such as skin and the esophagus, and the expression of C4.4A is dysregulated in various pathological conditions. However, the biological function of C4.4A remains unknown. To enable further studies, we evaluated the expression of C4.4A in monolayer cultures of normal human keratinocytes and in tissue-engineered skin substitutes (TESs) produced by the self-assembly approach, which allow the formation of a fully differentiated epidermis tissue...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29063138/decision-making-somatic-markers-and-emotion-processing-in-opiate-users
#12
Kathryn Biernacki, Gill Terrett, Skye N McLennan, Izelle Labuschagne, Phoebe Morton, Peter G Rendell
RATIONALE: Opiate use is associated with deficits in decision-making. A possible explanation for these deficits is provided by the somatic marker hypothesis, which suggests that substance users may experience abnormal emotional responses during decision-making involving reward and punishment. This in turn may interfere with the brief physiological arousal, i.e. somatic markers that normally occur in anticipation of risky decisions. To date, the applicability of the somatic marker hypothesis to explain decision-making deficits has not been investigated in opiate users...
October 23, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/29058879/critical-overview-of-the-use-of-ru-ii-polypyridyl-complexes-as-photosensitizers-in-one-photon-and-two-photon-photodynamic-therapy
#13
Franz Heinemann, Johannes Karges, Gilles Gasser
Photodynamic Therapy (PDT) is an emerging technique to treat certain types of cancer, bacterial, fungal, and viral infections, and skin diseases. In past years, different research groups developed new ruthenium-containing photosensitizers (PSs) with tuned photophysical and biological properties to better fit the requirements of PDT. In this Account, we report and discuss the latest results in this research area, emphasizing particularly our own research. For example, inspired by the DNA intercalating complex [Ru(bpy)2(dppz)](2+) (bpy = 2,2'-bipyridine; dppz = (dipyrido[3,2-a:2',3'-c]phenazine), a series of ruthenium complexes bearing differently functionalized dppz ligands were synthesized to target DNA...
October 23, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/29054032/constipation-and-other-common-symptoms-reported-by-women-and-men-in-methadone-and-buprenorphine-maintenance-treatment
#14
Paul S Haber, Mahmoud Elsayed, David Espinoza, Nicholas Lintzeris, Anne-Sophie Veillard, Richard Hallinan
BACKGROUND: Opioid substitution treatment (OST) is often continued long-term and, therefore, opioid-associated symptoms are of interest. Symptoms associated with methadone maintenance treatment (MMT) in men are well described, but there are fewer reports concerning symptoms associated with buprenorphine maintenance treatment (BMT) and very few reports among women. METHOD: Recipients of BMT (n=113) and MMT (n=184), non-opioid users (n=105) and opioid users not receiving OST (n=87) completed the Patient Assessment of Constipation (PAC-SYM) and a general symptom checklist...
October 13, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/29049260/a-quantitative-analysis-of-microcirculation-in-skin-defects-covered-with-topical-wound-dressings-or-a-newly-developed-collagen-matrix
#15
Manuel Held, Fabian Medved, Wiebke Petersen, Dascha Sophie Tolzmann, Afshin Rahmanian-Schwarz, Hans-Eberhard Schaller, Jens Rothenberger
OBJECTIVE: Innovative skin substitutes and temporary wound dressings are frequently used in the treatment of superficial and partial-thickness wounds. The aim of this study was to compare 2 commonly used temporary skin dressings with a newly developed collagen matrix to determine changes in microcirculation as measured by blood flow, hemoglobin oxygenation, and relative hemoglobin values during healing of partial-thickness skin defects. METHODS: This animal study involved 28 adult male Lewis rats...
November 2017: Advances in Skin & Wound Care
https://www.readbyqxmd.com/read/29046476/tracking-mesenchymal-stem-cell-contributions-to-regeneration-in-an-immunocompetent-cartilage-regeneration-model
#16
Daniela Zwolanek, María Satué, Verena Proell, José R Godoy, Kathrin I Odörfer, Magdalena Flicker, Sigrid C Hoffmann, Thomas Rülicke, Reinhold G Erben
It is currently controversially discussed whether mesenchymal stem cells (MSC) facilitate cartilage regeneration in vivo by a progenitor- or a nonprogenitor-mediated mechanism. Here, we describe a potentially novel unbiased in vivo cell tracking system based on transgenic donor and corresponding immunocompetent marker-tolerant recipient mouse and rat lines in inbred genetic backgrounds. Tolerance of recipients was achieved by transgenic expression of an immunologically neutral but physicochemically distinguishable variant of the marker human placental alkaline phosphatase (ALPP)...
October 19, 2017: JCI Insight
https://www.readbyqxmd.com/read/29039047/the-expression-pattern-of-keratin-24-in-tissue-engineered-dermo-epidermal-human-skin-substitutes-in-an-in-vivo-model
#17
Agnes S Klar, Katarzyna Michalak, Sophie Böttcher-Haberzeth, Ernst Reichmann, Martin Meuli, Thomas Biedermann
AIMS AND OBJECTIVES: The use of autologous tissue-engineered skin substitutes is a promising approach to cover large skin defects in patients. Preclinical investigation is pivotal to test and improve the quality of these bio-engineered substitutes. In the skin, the epidermis, formed mainly by keratinocytes, provides the first physical barrier protecting from the environment. Proper keratinocyte differentiation and, thus, formation of a stratified epidermis is essential for this function...
October 16, 2017: Pediatric Surgery International
https://www.readbyqxmd.com/read/29030192/polyvinyl-alcohol-sodium-alginate-integrated-silver-nanoparticles-as-probable-solution-for-decontamination-of-microbes-contaminated-water
#18
M A Abu-Saied, Tarek H Taha, Nehal M El-Deeb, Elsayed E Hafez
It is well known that the pathogenic multidrug resistant microbes are highly distributed and transferred to human through contaminated food and water. Advanced technologies have been developed for controlling these microbes using synthesized nanoparticles. In this study, biosynthesized silver nanoparticles were prepared, characterized and integrated with two synthetic and natural polymers. The polymers-silver nanoparticles were characterized using SEM, FTIR and mechanical properties of the membrane synthesized from either polymers with/without nanosilver...
October 10, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29026645/synthesis-and-characterization-of-collagen-plga-biodegradable-skin-scaffold-fibers
#19
Alireza Sadeghi-Avalshahr, Samira Nokhasteh, Amir Mahdi Molavi, Mohammad Khorsand-Ghayeni, Meysam Mahdavi-Shahri
The aim of this study is to investigate the applicability of poly(lactic-co-glycolic acid) (PLGA)/collagen composite scaffold for skin tissue engineering. PLGA and collagen were dissolved in HFIP as a common solvent and fibrous scaffolds were prepared by electrospinning method. The scaffolds were characterized by scanning electron microscopy (SEM), FTIR spectroscopy, mercury porosimetry, tensile strength, biocompatibility assays and Biodegradation. Cytotoxicity and cell adhesion were tested for two cell line groups, human dermal fibroblast (HDF) and human keratinocyte (HaCat)...
October 2017: Regenerative Biomaterials
https://www.readbyqxmd.com/read/29017361/haptic-assistive-technologies-for-audition-and-vision-sensory-disabilities
#20
Francesca Sorgini, Renato Caliò, Maria Chiara Carrozza, Calogero Maria Oddo
PURPOSE: The aim of this review is to analyze haptic sensory substitution technologies for deaf, blind and deaf-blind individuals. METHOD: The literature search has been performed in Scopus, PubMed and Google Scholar databases using selected keywords, analyzing studies from 1960s to present. Search on databases for scientific publications has been accompanied by web search for commercial devices. Results have been classified by sensory disability and functionality, and analyzed by assistive technology...
October 10, 2017: Disability and Rehabilitation. Assistive Technology
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