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https://www.readbyqxmd.com/read/28528409/polychlorinated-biphenyl-related-alterations-of-the-expression-of-essential-genes-in-harbour-seals-phoca-vitulina-from-coastal-sites-in-canada-and-the-united-states
#1
Marie Noël, Neil Dangerfield, Steve Jeffries, Dyanna Lambourn, Monique Lance, Caren Helbing, Michel Lebeuf, Peter S Ross
As long-lived marine mammals found throughout the temperate coastal waters of the North Pacific and Atlantic Oceans, harbour seals (Phoca vitulina) have become an invaluable sentinel of food-web contamination. Their relatively high trophic position predisposes harbour seals to the accumulation of harmful levels of persistent organic pollutants (POPs). We obtained skin/blubber biopsy samples from live-captured young harbour seals from various sites in the northeastern Pacific (British Columbia, Canada, and Washington State, USA) as well as the northwestern Atlantic (Newfoundland and Quebec, Canada)...
May 20, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28528394/a-novel-dual-wavelength-laser-stimulator-to-elicit-transient-and-tonic-nociceptive-stimulation
#2
Xiaoxi Dong, Tianjun Liu, Han Wang, Jichun Yang, Zhuying Chen, Yong Hu, Yingxin Li
This study aimed to develop a new laser stimulator to elicit both transient and sustained heat stimulation with a dual-wavelength laser system as a tool for the investigation of both transient and tonic experimental models of pain. The laser stimulator used a 980-nm pulsed laser to generate transient heat stimulation and a 1940-nm continuous-wave (CW) laser to provide sustained heat stimulation. The laser with 980-nm wavelength can elicit transient pain with less thermal injury, while the 1940-nm CW laser can effectively stimulate both superficial and deep nociceptors to elicit tonic pain...
May 20, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28528315/bisphenol-a-and-replacements-in-thermal-paper-a-review
#3
REVIEW
Maria K Björnsdotter, Jacob de Boer, Ana Ballesteros-Gómez
Thermal paper contains potentially toxic compounds such as bisphenol A (BPA), which is used as a color developer. BPA has been reported in thermal paper in concentrations up to 42,600 μg g(-1). The exposure to BPA via dermal transfer has been recently discussed as a significant contribution to the overall human exposure and the estimated daily intake (EDI) has been reported up to 218 μg d(-1). BPA has been also detected in recycled paper with concentrations up to 46 μg g(-1). Due to the fact that BPA is a known endocrine disruptor and migrates from materials, regulatory restrictions have been established to prevent risks for the human health...
May 15, 2017: Chemosphere
https://www.readbyqxmd.com/read/28528167/cxcl1-inhibition-regulates-uvb-induced-skin-inflammation-and-tumorigenesis-in-xpa-deficient-mice
#4
Makoto Kunisada, Chieko Hosaka, Chihiro Takemori, Eiji Nakano, Chikako Nishigori
Xeroderma pigmentosum complementation group A (XP-A) is a hereditary disease characterized by early onset of skin cancers and freckles-like pigmented maculae in the sun-exposed sites. Although etiology of predisposition to UV-induced skin tumors in XP-A is well investigated as a repair deficiency in UV-induced DNA damage, the mechanism of exaggerated sunburn in patients with XP-A and whether UV-induced inflammation relates to skin tumor-prone phenotype remains to be elucidated. Using gene profiling of XP-A model mice, Xpa-deficient mice, we found that expression of CXCL1 in the skin and blood levels of in Xpa-deficient mice increased significantly after UVB exposure at an even a limited area in comparison to those of wild-type mice...
May 17, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28527504/telehealth-in-physical-medicine-and-rehabilitation-a-narrative-review
#5
REVIEW
Adam S Tenforde, Jaye E Hefner, Jodi E Kodish-Wachs, Mary A Iaccarino, Sabrina Paganoni
Telehealth refers to health care interactions that leverage telecommunication devices to provide medical care outside the traditional face-to-face, in-person medical encounter. Technology advances and research have expanded use of telehealth in health care delivery. Physical medicine and rehabilitation providers may use telehealth to deliver care to populations with neurologic and musculoskeletal conditions, commonly treated in both acute care and outpatient settings. Patients with impaired mobility and those living in locations with reduced access to care may particularly benefit...
May 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28526876/inductive-flash-annealing-of-bulk-metallic-glasses
#6
K Kosiba, S Pauly
We developed a temperature-controlled inductive flash-annealing device, which heats bulk metallic glasses (BMGs) at defined rates of up to 200 K/s to a given temperature. Subsequent instantaneous quenching in water allows preserving the microstructures obtained at various stages of crystallization. One Zr-based and two CuZr-based BMGs were flash-annealed at the onset of crystallization with different heating rates in order to prepare advanced BMG-matrix composites. The highly reproducible composite microstructures contain uniformly dispersed crystals and a narrow crystal size distribution...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28526300/embryonic-ap1-transcription-factor-deficiency-causes-a-collodion-baby-like-phenotype
#7
Christina A Young, Richard L Eckert, Gautam Adhikary, Debra Crumrine, Peter M Elias, Miroslav Blumenberg, Ellen A Rorke
AP1 transcription factors are important controllers of gene expression in the epidermis, and altered AP1 factor function can perturb keratinocyte proliferation and differentiation. However, our understanding of how AP1 signaling changes may underlie or exacerbate skin disease is limited. We have shown that inhibiting AP1 factor function in suprabasal adult epidermis leads to reduced filaggrin levels and to a phenotype that resembles the genetic disorder, ichthyosis vulgaris. We now show that inhibiting AP1 factor function during development in embryonic epidermis produces marked phenotypic changes including reduced filaggrin mRNA and protein levels, compromised barrier function, marked ultrastructural change and enhanced dehydration susceptibility that resembles the phenotype observed in the flaky tail mouse, a model for ichthyosis vulgaris...
May 16, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28526296/mesenchymal-stem-cells-mscs-attenuate-cutaneous-sclerodermatous-graft-versus-host-disease-scl-gvhd-through-inhibition-of-immune-cell-infiltration-in-a-mouse-model
#8
Ji-Young Lim, Da-Bin Ryu, Sung-Eun Lee, Gyeongsin Park, Chang-Ki Min
Human chronic graft-versus-host disease (CGVHD) shares clinical characteristics with a murine sclerodermatous GVHD (Scl-GVHD) model that is characterized by skin thickening and lung fibrosis. A B10.D2 → BALB/c transplant model of Scl-GVHD was used to address the therapeutic effect of mesenchymal stem cells (MSCs) on the development of CGVHD. The clinical and pathological severity of cutaneous Scl-GVHD was significantly attenuated in MSC-treated recipients relative to Scl-GVHD controls. After MSC treatment, skin collagen production was significantly reduced with consistent downregulation of TGF-β expression...
May 16, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28525579/modulation-of-cyclobutane-thymine-photodimer-formation-in-t11-tracts-in-rotationally-phased-nucleosome-core-particles-and-dna-minicircles
#9
Kesai Wang, John-Stephen A Taylor
Cyclobutane pyrimidine dimers (CPDs) are DNA photoproducts linked to skin cancer, whose mutagenicity depends in part on their frequency of formation and deamination. Nucleosomes modulate CPD formation, favoring outside facing sites and disfavoring inward facing sites. A similar pattern of CPD formation in protein-free DNA loops suggests that DNA bending causes the modulation in nucleosomes. To systematically study the cause and effect of nucleosome structure on CPD formation and deamination, we have developed a circular permutation synthesis strategy for positioning a target sequence at different superhelix locations (SHLs) across a nucleosome in which the DNA has been rotationally phased with respect to the histone octamer by TG motifs...
May 19, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28525403/genetic-diseases-associated-with-an-increased-risk-of-skin-cancer-development-in-childhood
#10
Alexander L Fogel, Kavita Y Sarin, Joyce M C Teng
PURPOSE OF REVIEW: Childhood skin cancers are relatively rare and may indicate an underlying genetic disorder. The increasing elucidation of genetic pathways is changing the diagnosis and management of genetic skin cancer susceptibility syndromes. In this review, we provide an overview of genetic conditions that predispose to skin cancer development in childhood and signs that providers should assess when evaluating affected individuals. RECENT FINDINGS: In basal cell nevus syndrome (BCNS), the patched2 (PTCH2) and suppressor of fused (SUFU) genes have been implicated in disease pathogenesis...
May 18, 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28524720/surface-tailored-nanomixed-micelles-containing-quercetin-salicylic-acid-physical-complex-for-enhanced-cellular-and-in-vivo-activities-a-quality-by-design-perspective
#11
Premjeet Singh Sandhu, Rajendra Kumar, O P Katare, Bhupinder Singh
AIM: The development of surface-tailored quercetin (QCT)-salicylic acid (SA) physical complex for effective treatment of skin carcinoma. MATERIALS & METHODS: QCT-SA nanomixed micelles were prepared by the self-assembly method employing the Quality by Design (QbD) approach and evaluated for various in vitro, ex vivo and in vivo parameters. RESULTS: The optimized formulation showed enhanced percent permeation (Q24), in other words, 78.12 ± 0...
May 19, 2017: Nanomedicine
https://www.readbyqxmd.com/read/28524368/severe-pemphigoid-gestationis-associated-with-acute-disseminated-encephalomyelitis-in-the-setting-of-a-systemic-disorder
#12
Jawad Oumerzouk, Nabil Abida, Achraf Zaimi, Kaoutar Znati, El Mehdi Zbir, Ahmed Bourazza
Pemphigoid gestationis is a skin-specific autoimmune disorder that can sometimes present as the cutaneous manifestation of a multiorgan disease due to potentially common pathogenic mechanisms. We report a severe form of pemphigoid gestationis in a 32-year-old primigravida woman, who presented at 22 weeks of gestation with headaches and blurred vision, later developing encephalitis, intrauterine fetal demise and dilated cardiomyopathy.
May 19, 2017: Australasian Journal of Dermatology
https://www.readbyqxmd.com/read/28524216/-update-on-congenital-and-neonatal-herpes-infections-infection-due-to-cytomegalovirus-and-herpes-simplex
#13
F Baquero-Artigao
Newborn infants are a population which is especially susceptible to viral infections that frequently affect the central nervous system. Herpes infections can be transmitted to the foetus and to the newborn infant, and give rise to severe clinical conditions with long-term sensory and cognitive deficits. Two thirds of newborn infants with encephalitis due to herpes simplex virus and half of the children with symptomatic congenital infection by cytomegalovirus develop sequelae, which results in high community health costs in the long term...
May 17, 2017: Revista de Neurologia
https://www.readbyqxmd.com/read/28524092/marine-fish-proteins-and-peptides-for-cosmeceuticals-a-review
#14
REVIEW
Jayachandran Venkatesan, Sukumaran Anil, Se-Kwon Kim, Min Suk Shim
Marine fish provide a rich source of bioactive compounds such as proteins and peptides. The bioactive proteins and peptides derived from marine fish have gained enormous interest in nutraceutical, pharmaceutical, and cosmeceutical industries due to their broad spectrum of bioactivities, including antioxidant, antimicrobial, and anti-aging activities. Recently, the development of cosmeceuticals using marine fish-derived proteins and peptides obtained from chemical or enzymatical hydrolysis of fish processing by-products has increased rapidly owing to their activities in antioxidation and tissue regeneration...
May 18, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28524060/high-frequency-ultrasound-imaging-of-cutaneous-neurofibroma-in-patients-with-neurofibromatosis-type-i
#15
Delphine Raffin, Julia Zaragoza, Gabriella Georgescou, Youssef Mourtada, Annabel Maruani, Frédéric Ossant, Frédéric Patat, Loïc Vaillant, Laurent Machet
Neurofibromas (NFs) are benign tumours arising from a nerve sheath, which are present in nearly all patients with neurofibromatosis type 1 (NF1). High-frequency ultrasound (HFU) systems, using frequencies over 20 MHz, were developed to improve visualization of skin tumours by means of increased resolution. To describe NFs by using HFU in patients with NF1. Anonymized HFU (25-MHz) images of NFs were randomized. Initially, two dermatologist investigators, with experience in HFU imaging of the skin, together described the ultrasound images and established eight criteria for NFs...
May 19, 2017: European Journal of Dermatology: EJD
https://www.readbyqxmd.com/read/28524059/differential-effect-of-extracellular-matrix-derived-from-papillary-and-reticular-fibroblasts-on-epidermal-development-in-vitro
#16
David Janson, Marion Rietveld, Christian Mahé, Gaëlle Saintigny, Abdoelwaheb El Ghalbzouri
Papillary and reticular fibroblasts have different effects on keratinocyte proliferation and differentiation. The aim of this study was to investigate whether these effects are caused by differential secretion of soluble factors or by differential generation of extracellular matrix from papillary and reticular fibroblasts. MATERIALS AND METHODS: To study the effect of soluble factors, keratinocyte monolayer cultures were grown in papillary or reticular fibroblast-conditioned medium. To study the effect of extracellular matrix, keratinocytes were grown on papillary or reticular-derived matrix...
May 19, 2017: European Journal of Dermatology: EJD
https://www.readbyqxmd.com/read/28523894/primary-cutaneous-mucormycosis-in-an-extremely-preterm-infant-successfully-treated-with-liposomal-amphotericin-b
#17
Christopher D Lowe, Rebecca J Sainato, David R Stagliano, Maribel M Morgan, Brian P Green
Cutaneous mucormycosis is a rare but often fatal invasive fungal infection that occurs most commonly in patients with diabetes, malignancy, and other immunocompromising conditions. We report an extremely preterm (<28 weeks) baby boy who developed polymicrobial sepsis and primary cutaneous mucormycosis within his first 10 days of life. He was successfully treated with medical management alone since he was not a candidate for surgery. Successful treatment of cutaneous mucormycosis without surgical debridement has been reported on only two other occasions...
May 2017: Pediatric Dermatology
https://www.readbyqxmd.com/read/28523892/a-young-child-with-eosinophilia-rash-and-multisystem-illness-drug-rash-eosinophilia-and-systemic-symptoms-syndrome-after-receipt-of-fluoxetine
#18
Pandiarajan Vignesh, Janak Kishore, Ankur Kumar, Keshavamurthy Vinay, Sunil Dogra, Sreejesh Sreedharanunni, Prabhas Prasun Giri, Priyankar Pal, Apurba Ghosh
Drug rash, eosinophilia, and systemic symptoms (DRESS) syndrome is a severe systemic hypersensitivity reaction that usually occurs within 6 weeks of exposure to the offending drug. Diagnosis is usually straightforward in patients with pyrexia, skin rash, hepatitis, and eosinophilia with a preceding history of exposure to agents often associated with DRESS syndrome, such as aromatic anticonvulsants and sulfa drugs, but diagnosis of DRESS may still be a challenge. We report a 4-year-old child with probable DRESS syndrome complicated by multiple hematologic complications that developed 1 month after exposure to fluoxetine, a drug not known to be associated with such severe reactions...
May 2017: Pediatric Dermatology
https://www.readbyqxmd.com/read/28523890/handy-hints-about-raynaud-s-phenomenon-in-children-a-critical-review
#19
REVIEW
Donato Rigante, Michele Fastiggi, Francesco Ricci, Francesca D'Errico, Benedetta Bracci, Cristina Guerriero
Raynaud's phenomenon (RP) is a vasospastic disorder characterized by recurrent self-limited episodes of skin pallor, cyanosis, and hyperemia caused by paroxysmal spasms in the small arteries of the fingers and toes and can occur in any age group. Hands, feet, nose, ears, and nipples can be affected. The diagnosis is made clinically, assessing varying degrees of ischemia in the involved areas of skin, but this transient ischemia may also herald the onset of connective tissue disease. Investigation is recommended when RP starts in childhood to exclude an underlying autoimmune condition and close follow-up for its development...
May 2017: Pediatric Dermatology
https://www.readbyqxmd.com/read/28523877/mother-nature-in-eczema-maternal-factors-influencing-atopic-dermatitis
#20
REVIEW
Alexandra R Vaughn, Paige Tannhauser, Raja K Sivamani, Vivian Y Shi
Atopic dermatitis (AD) is a highly prevalent chronic inflammatory skin disease. Current knowledge about the etiology of AD suggests that it is multifactorial and involves the interaction of several factors, including environmental triggers, genetics, immunologic factors, and skin barrier dysfunction. The prenatal environment has a significant influence on fetal development, including the maturation of skin barrier function. This review summarizes maternal factors that have been reported to influence the development of AD in offspring, including maternal genetics, nutrition, breastfeeding, environment, and behaviors...
May 2017: Pediatric Dermatology
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