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https://www.readbyqxmd.com/read/28612442/allergic-contact-dermatitis-caused-by-arbutin-and-dipotassium-glycyrrhizate-in-skin-lightening-products
#1
Naoki Oiso, Megumi Tatebayashi, Yasuko Hoshiyama, Akira Kawada
No abstract text is available yet for this article.
July 2017: Contact Dermatitis
https://www.readbyqxmd.com/read/28598111/-the-alterations-in-expression-of-the-synaptophysin-in-rat-brain-trauma-injury-model-an-experimental-study
#2
Yan-Chao Wang, Yu Zhang, Ting Lan, Xiao-Lin Ai, Yue-Chao Liang, Min He, Yang Li, Fang Fang
OBJECTIVES: To study the rat brain trauma injury model and investigate the rules of transformation of expression of synaptophysin and its relationship between histology and radiology alternation after brain trauma injury. METHODS: 24 SD male rats aged three months were randomly divided into 4 groups,including a control group of 6 rats.The experimental group rats were received operation to build free falling brain trauma injury model.The rat were analyzed at 2,4,8 weeks after injury...
November 2016: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28597838/-collaboration-between-periodontics-and-orthodontics-interest-of-alveolar-corticotomies-and-piezocision-review-of-literature
#3
Brenda Mertens, Charles Angioni, Valérie Orti, Pierre Canal
INTRODUCTION: Orthodontics in adults must adapt to certain particularities especially related to the decrease or absence of growth and the prevalence of periodontal damage in this population. This review of the literature aims to assess the effects of alveolar corticotomies on accelerating or facilitating tooth movements in different types of orthodontic movements, to compare results obtained by classical technique with those obtained by piezocision and analyze their impact on periodontal tissues in the long term...
June 2017: L' Orthodontie Française
https://www.readbyqxmd.com/read/28583673/high-level-de-novo-biosynthesis-of-arbutin-in-engineered-escherichia-coli
#4
Xiaolin Shen, Jia Wang, Jian Wang, Zhenya Chen, Qipeng Yuan, Yajun Yan
Arbutin is a hydroquinone glucoside compound existing in various plants. It is widely used in pharmaceutical and cosmetic industries owing to its well-known skin-lightening property as well as anti-oxidant, anti-microbial, and anti-inflammatory activities. Currently, arbutin is usually produced by plant extraction or enzymatic processes, which suffer from low product yield and expensive processing cost. In this work, we established an artificial pathway in Escherichia coli for high-level production of arbutin from simple carbon sources...
June 2, 2017: Metabolic Engineering
https://www.readbyqxmd.com/read/28554823/mercury-contamination-in-facial-skin-lightening-creams-and-its-health-risks-to-user
#5
Yu Bin Ho, Nor Hidayu Abdullah, Hazwanee Hamsan, Eugenie Sin Sing Tan
This study aims to determine concentrations of mercury in facial skin lightening cream according to different price categories (category I: <RM29.99, category II: RM30.00-RM59.99, category III: RM60.00-RM99.99 and category IV: ≥RM100.00) and their potential health risks to users. Prices of skin lightening creams were determined during a preliminary market survey. Thereafter, twenty samples were purchased from various locations such as cosmetic stalls, beauty shops, pharmacies and street vendors based on their stratified price categories...
May 26, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/28552424/physicochemical-and-colloidal-aspects-of-food-matrix-effects-on-gastrointestinal-fate-of-ingested-inorganic-nanoparticles
#6
REVIEW
David Julian McClements, Hang Xiao, Philip Demokritou
Inorganic nanoparticles, such as titanium dioxide, silicon dioxide, iron oxide, zinc oxide, or silver nanoparticles, are added to some food products and food packaging materials to obtain specific functional attributes, such as lightening, powder flow, nutrition, or antimicrobial properties. These engineered nanomaterials (ENMs) all have dimensions below 100nm, but may still vary considerably in composition, morphology, charge, surface properties and aggregation state, which effects their gastrointestinal fate and potential toxicity...
May 9, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28512843/assessment-of-the-efficacy-and-safety-of-a-new-complex-skin-cream-in-asian-women-a-controlled-clinical-trial
#7
Yu Seok Jung, Ji Hae Lee, Jung Min Bae, Dong Won Lee, Gyong Moon Kim
BACKGROUND: Medical products such as hydroquinone and tretinoin have been widely used to treat various types of skin hyperpigmentation. However, these products are limited in daily use given their adverse effects. Other alternative agents with fewer adverse side effects have been developed. However, single agents often do not produce satisfactory results. AIMS: To evaluate the efficacy and safety of a new brightening complex cream containing niacinamide, tranexamic acid, oxyresveratrol, glutathione disulfide, and linoleic acid...
May 16, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/28494565/-the-protection-of-hydrogen-rich-saline-on-a-rat-dry-eye-model-induced-by-scopolamine-hydrobromide
#8
Y Y Chu, N Hua, Y S Ru, S Z Zhao
Objective: To evaluate the effect of hydrogen-rich saline (HRS) on dry eye rats induced by subcutaneous injection of scopolamine hydrobromide. Methods: Experiment research. Thirty female Wistar rats at about six weeks old were randomly divided into the normal group, dry eye group, HRS eyedrops group, normal saline eyedrops group (NS), HRS intraperitoneal injection group and NS intraperitoneal injection group, with 5 rats in each group. The dry eye was induced by subcutaneous injection of scopolamine hydrobromide in the latter five groups...
May 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28490897/glutathione-and-its-antiaging-and-antimelanogenic-effects
#9
Sinee Weschawalit, Siriwan Thongthip, Phanupong Phutrakool, Pravit Asawanonda
BACKGROUND: Previous studies showed that supplementation of reduced form of glutathione (GSH, 500 mg/d) has a skin-lightening efficacy in humans. This study was designed to evaluate the influences of both GSH and oxidized form (GSSG), at doses lower than 500 mg/d, on improving skin properties. PATIENTS AND METHODS: A randomized, double-blind, placebo-controlled, parallel, three-arm study was conducted. Healthy female subjects were equally randomized into three groups and took GSH (250 mg/d), GSSG (250 mg/d), or placebo orally for 12 weeks...
2017: Clinical, Cosmetic and Investigational Dermatology
https://www.readbyqxmd.com/read/28481757/vermillion-reconstruction-with-anal-verge-transitional-epithelium-turning-things-upside-down
#10
Benjamin Levi, Joseph A Ricci, Matthias B Donelan
Postburn lip deformities pose a significant set of challenges to reconstructive burn surgeons because of the complex anatomy, diverse functions, and specialized nature of the lip tissues. There has been a paucity of literature on restoration of the vermillion to date. The authors report on two patients who suffered burn injuries resulting in significant lip deformities who underwent a novel method of vermillion reconstruction with a full thickness anal verge skin graft. Both patients tolerated the procedure well without complications...
May 4, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28480125/the-most-effective-methods-for-delivering-severe-weather-early-warnings-to-fishermen-on-lake-victoria
#11
Richard Tushemereirwe, Doreen Tuhebwe, Mary Ann Cooper, Florence Mutonyi D'ujanga
Introduction: It is estimated that five thousand people die on Lake Victoria every year by drowning which is triggered by severe weather hazards like lightning. Objectives:  In order to improve predictability of severe weather conditions on Lake Victoria, there is need to deliver timely and effective Severe Weather Early Warning Systems (SWEWS) to those at risk. On Lake Victoria, previous SWEW service trials ceased with the end of the funding grants. This study therefore assessed the possibility of sustaining the SWEW service by assessing willingness to pay...
February 22, 2017: PLoS Currents
https://www.readbyqxmd.com/read/28459246/correction-of-a-single-discolored-anterior-tooth-due-to-internal-resorption-a-clinical-report
#12
Megan Todd, William Brackett, Mario Romero
For patients with a single discolored tooth who desire to have it lightened, a thorough examination and radiographic analysis need to be performed prior to initiating any bleaching treatment so that the cause of the discoloration can be determined. Underlying pathology, such as internal resorption, is often asymptomatic and difficult to diagnose and if left untreated could result in tooth loss. This article describes a case of a patient with a discolored maxillary central incisor resulting from internal resorption and the subsequent endodontic and bleaching therapy performed to resolve the pathology and achieve an acceptable esthetic result...
May 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28433430/complementary-effect-of-hydroquinone-and-retinoic-acid-on-corneocyte-desquamation-with-their-combination-use
#13
Kyung Ah Cheong, Tae Ryong Lee, Ai-Young Lee
BACKGROUND: Retinoic acid (RA) enhances skin-lightening capabilities of hydroquinone (HQ), at least in part, by facilitating desquamation which leads to increase penetration of HQ. The desquamation also affects skin irritation levels. The mechanism of RA-induced desquamation, however, has not been completely explored and no such data has been available for HQ uses. OBJECTIVE: To examine the role of HQ, RA, and their combination in the desquamation. METHODS: Primary cultured normal human keratinocytes, which were treated with HQ and/or RA in presence or absence of serine-specific inhibitor Kazal type5 (SPINK5)/lympho-epithelial Kazal-type-related inhibitor (LEKTI) knockdown or recombinant human SPINK5/LEKTI, and biopsied skin samples applied with HQ or RA were examined...
April 7, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28394665/comparison-of-q-switched-nd-yag-laser-alone-versus-its-combination-with-ultrapulse-co2-laser-for-the-treatment-of-black-tattoo
#14
Mithila Vanarase, Ram Krishan Gautam, Pooja Arora, Sonali Bajaj, Neha Meena, Ananta Khurana
BACKGROUND: Q-switched lasers are conventionally used for the treatment of black tattoo. However, they require multiple sittings, and the response may be slow due to competing epidermal pigment in dark skin. OBJECTIVE: To compare the efficacy of Q-switched Nd:YAG laser alone with its combination with ultrapulse CO2 for the removal of black tattoo. MATERIALS AND METHODS: Sixty patients with black tattoo were randomized into two groups viz., group A and group B...
April 10, 2017: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/28371026/interaction-and-developmental-activation-of-two-neuroendocrine-systems-that-regulate-light-mediated-skin-pigmentation
#15
Gabriel E Bertolesi, Yi N Song, Karen Atkinson-Leadbeater, Jung-Lynn J Yang, Sarah McFarlane
Lower vertebrates use rapid light-regulated changes in skin colour for camouflage (background adaptation) or during circadian variation in irradiance levels. Two neuroendocrine systems, the eye/alpha-melanocyte-stimulating hormone (α-MSH) and the pineal complex/melatonin circuits, regulate the process through their respective dispersion and aggregation of pigment granules (melanosomes) in skin melanophores. During development, Xenopus laevis tadpoles raised on a black background or in the dark perceive less light sensed by the eye and darken in response to increased α-MSH secretion...
July 2017: Pigment Cell & Melanoma Research
https://www.readbyqxmd.com/read/28359311/effect-of-vulcanization-temperature-and-dental-stone-colour-on-colour-degradation-of-maxillofacial-silicone-elastomers
#16
Ebru Demet Cifter, Meltem Ozdemir-Karatas, Emrah Baca, Adem Cinarli, Ali Balik, Erkan Sancakli, Bilge Gokcen-Rohlig
BACKGROUND: Colour degradation is a major problem in maxillofacial silicone elastomers. Recent studies have focused on colour stability and the mechanical properties of the silicone elastomers. A colour match is also essential for the acceptance of the prosthesis by the patient. The aim of this study is to assess the colour degradation of the silicone elastomer after being moulded in different colours of dental stones at two different vulcanization temperatures. METHODS: Five different colours of dental stones were used to fabricate a total of 120 silicone blocks using a Cosmesil M511 maxillofacial silicone elastomer...
March 31, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28352332/inhibitory-effect-of-salvia-plebeia-leaf-extract-on-ultraviolet-induced-photoaging-associated-ion-channels-and-enzymes
#17
You-Jin Chang, Dong-Ung Lee, Da Yeong Nam, Sung Min Cho, Seungug Hong, Joo Hyun Nam, Woo Kyung Kim
In traditional Korean/Asian medicine, Salvia plebeia R.Br. (S. plebeia) leaves are used to treat inflammatory diseases, including dermatitis, cough, asthma and toothache. Recently, S. plebeia leaves have been applied in skin care, as they promote skin lightening and elasticity. Therefore, the present study investigated the anti-aging effects of S. plebeia leaf methanolic extract and its fractions (dichloromethane, ethylacetate and n-butanol). The results of a whole-cell patch clamp analysis indicated that the methanolic extract mediated ultraviolet (UV)-induced photoaging-associated ion channels, transient receptor potential vanilloid 1 (TRPV1) and calcium release-activated calcium channel protein 1 (ORAI1) channel activity in HEK293T cells overexpressing TRPV1 or ORAI1 and STIM1...
February 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28345377/green-microparticles-based-on-a-chitosan-lactobionic-acid-linoleic-acid-association-characterisation-and-evaluation-as-a-new-carrier-system-for-cosmetics
#18
C Chaouat, S Balayssac, M Malet-Martino, F Belaubre, E Questel, A M Schmitt, S Poigny, S Franceschi, E Perez
The association chitosan/linoleic acid/lactobionic acid in aqueous solution spontaneously led to the formation of stable microparticles with a liquid hydrophobic core consisting of linoleic acid surrounded by a shell of chitosan/lactobionic acid. The originality of the microparticles arises from the fact that they are formed by the association of three ingredients of cosmetic interest, including a skin penetration enhancer (linoleic acid). Dynamic light scattering (DLS) measurements showed microparticles with a mean diameter of 1-2 μm...
March 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28335318/a-label-free-and-sensitive-fluorescent-qualitative-assay-for-bisphenol-a-based-on-rolling-circle-amplification-exonuclease-iii-combined-cascade-amplification
#19
Xia Li, Juan Song, Qing-Wang Xue, Fu-Heng You, Xia Lu, Yan-Cong Kong, Shu-Yi Ma, Wei Jiang, Chen-Zhong Li
Bisphenol A (BPA) detection in drinking water and food packaging materials has attracted much attention since the discovery that BPA can interfere with normal physiological processes and cause adverse health effects. Here, we constructed a label-free aptamer fluorescent assay for selective and sensitive detection of BPA based on the rolling circle amplification (RCA)/Exonuclease III (Exo III)-combined cascade amplification strategy. First, the duplex DNA probe (RP) with anti-BPA aptamer and trigger sequence was designed for BPA recognition and signal amplification...
October 21, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28318188/-zosteriform-lichen-aureus-pediatric-clinical-case
#20
Álvaro Rivera-Rodríguez, Sergio Hernández Ostiz, Ana L Morales-Moya, Lucía Prieto-Torres, Marcial Álvarez-Salafranca, Mariano Ara Martín
Lichen aureus is a rare pigmented purpuric dermatosis. We present an unusual case because of the pediatric age and the great number of lesions with zosteriform distribution. He is a 10-yearold boy, with a brownish, smaller than 1 cm, sharp edges, lichenified surface, asymptomatic macule, over the inner aspect of the left leg with a zosteriform distribution. The histology showed a band-like inflammatory infiltrate in the superficial dermis, composed of lymphocytes, histiocytes, erythrocytes and haemosiderin...
April 1, 2017: Archivos Argentinos de Pediatría
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