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https://www.readbyqxmd.com/read/28538881/efficacy-and-safety-of-superficial-chemical-peeling-in-treatment-of-active-acne-vulgaris
#1
Hassanain Al-Talib, Alyaa Al-Khateeb, Ayad Hameed, Chandrika Murugaiah
Acne vulgaris is an extremely common condition affecting the pilosebaceous unit of the skin and characterized by presence of comedones, papules, pustules, nodules, cysts, which might result in permanent scars. Acne vulgaris commonly involve adolescents and young age groups. Active acne vulgaris is usually associated with several complications like hyper or hypopigmentation, scar formation and skin disfigurement. Previous studies have targeted the efficiency and safety of local and systemic agents in the treatment of active acne vulgaris...
March 2017: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28531147/oriented-growth-of-%C3%AE-mno%C3%A2-nanorods-using-natural-extracts-from-grape-stems-and-apple-peels
#2
Lina Sanchez-Botero, Adriana P Herrera, Juan P Hinestroza
We report on the synthesis of alpha manganese dioxide (α-MnO₂) nanorods using natural extracts from Vitis vinifera grape stems and Malus domestica 'Cortland' apple peels. We used a two-step method to produce highly crystalline α-MnO₂ nanorods: (1) reduction of KMnO₄ in the presence of natural extracts to initiate the nucleation process; and (2) a thermal treatment to enable further solid-state growth of the nuclei. Transmission electron microscopy (TEM) and field emission scanning electron microscopy (FESEM) images provided direct evidence of the morphology of the nanorods and these images were used to propose nucleation and growth mechanisms...
May 22, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28518173/simultaneous-quantification-of-n-and-o-glycans-using-a-solid-phase-method
#3
Shuang Yang, Yingwei Hu, Lori Sokoll, Hui Zhang
Glycosylation has a pivotal role in a diverse range of biological activities, modulating the structure and function of proteins. Glycogens coupled to the nitrogen atom (N-linked) of asparagine side chains or to the oxygen atom (O-linked) of serine and threonine side chains represent the two major protein glycosylation forms. N-glycans can be released by glycosidases, whereas O-glycans are often cleaved by chemical reaction. However, it is challenging to combine these enzymatic and chemical reactions in order to analyze both N- and O-glycans...
June 2017: Nature Protocols
https://www.readbyqxmd.com/read/28498204/asds-guidelines-task-force-consensus-recommendations-regarding-the-safety-of-lasers-dermabrasion-chemical-peels-energy-devices-and-skin-surgery-during-and-after-isotretinoin-use
#4
Abigail Waldman, Diana Bolotin, Kenneth A Arndt, Jeffrey S Dover, Roy G Geronemus, Anne Chapas, Sanjana Iyengar, Suzanne L Kilmer, Andrew C Krakowski, Naomi Lawrence, Heidi B Prather, Thomas E Rohrer, Bethanee J Schlosser, John Y S Kim, Peter R Shumaker, Leah K Spring, Murad Alam
BACKGROUND: Currently, the isotretinoin (13-cis-retinoic acid) package insert contains language advising the discontinuation of isotretinoin for 6 months before performing cosmetic procedures, including waxing, dermabrasion, chemical peels, laser procedures, or incisional and excisional cold-steel surgery. It is common practice to follow this standard because of concerns regarding reports of sporadic adverse events and increased risk of scarring. OBJECTIVE: To develop expert consensus regarding the safety of skin procedures, including resurfacing, energy device treatments, and incisional and excisional procedures, in the setting of concurrent or recent isotretinoin use...
May 10, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28492049/a-review-of-laser-and-light-therapy-in-melasma
#5
REVIEW
M K Trivedi, F C Yang, B K Cho
Melasma is a dysregulation of the homeostatic mechanisms that control skin pigmentation and excess pigment is produced. Traditional treatment approaches with topical medications and chemical peels are commonly used but due to the refractory and recurrent nature of melasma, patients often seek alternative treatment strategies such as laser and light therapy. Several types of laser and light therapy have been studied in the treatment of melasma. Intense pulsed light, low fluence Q-switched lasers, and non-ablative fractionated lasers are the most common lasers and light treatments that are currently performed...
March 2017: International Journal of Women's Dermatology
https://www.readbyqxmd.com/read/28492048/a-review-of-the-safety-of-cosmetic-procedures-during-pregnancy-and-lactation
#6
REVIEW
M K Trivedi, G Kroumpouzos, J E Murase
The safety of cosmetic procedures in patients who are pregnant and/or lactating is a complex clinical question surrounded by uncertainty. Our objective is to consolidate data on the safety of commonly requested cosmetic procedures during pregnancy and lactation after a systematic review of the current literature to guide evidence-based care in the future. A systematic search of the PubMed database was conducted for articles on cosmetic procedures during pregnancy and lactation. Due to a lack of controlled trials, case reports and series were considered...
March 2017: International Journal of Women's Dermatology
https://www.readbyqxmd.com/read/28485418/in-vitro-in-vivo-peeling-of-multilayered-aminocarboxylate-gold-nanoparticles-evidenced-by-a-kinetically-stable-99m-tc-label
#7
Francisco Silva, Lurdes Gano, Maria Paula Cabral Campello, Rosa Marques, Isabel Prudêncio, Ajit Zambre, Anandhi Upendran, António Paulo, Raghuraman Kannan
A thiolated bombesin peptide was conjugated to Au-DTDTPA nanoconstructs to obtain BBN-Au-DTDTPA targeted to the gastrin releasing peptide receptor (GRPr). Different analytical techniques showed that this conjugate shares similar physico-chemical properties with Au-DTDTPA; HPLC and XPS analyses corroborated the attachment of the bioactive peptide to the AuNPs surface. Competitive binding assays in PC3 cancer cells showed that these BBN-containing AuNPs have high affinity for GRPr. BBN-Au-DTDTPA was successfully radiolabeled with (99m)Tc and showed high in vitro stability towards different biological media and substrates, except for glutathione (GSH)...
May 9, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28454048/antibacterial-activity-of-biochemically-capped-iron-oxide-nanoparticles-a-view-towards-green-chemistry
#8
Rabia Irshad, Kamran Tahir, Baoshan Li, Aftab Ahmad, Azka R Siddiqui, Sadia Nazir
A green approach to fabricate nanoparticles has been evolved as a revolutionary discipline. Eco-compatible reaction set ups, use of non-toxic materials and production of highly active biological and photocatalytic products are few benefits of this greener approach. Here, we introduce a green method to synthesize Fe oxide NPs using Punica granatum peel extract. The formation of Fe oxide NPs was optimized using different concentrations of peel extract (20mL, 40mL and 60mL) to achieve small size and better morphology...
April 19, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28446637/drought-enhanced-xylem-sap-sulfate-closes-stomata-by-affecting-almt12-and-guard-cell-aba-synthesis
#9
Frosina Malcheska, Altaf Ahmad, Sundas Batool, Heike M Müller, Jutta Ludwig-Müller, Juergen Kreuzwieser, Dörte Randewig, Robert Hänsch, Ralf R Mendel, Ruediger Hell, Markus Wirtz, Dietmar Geiger, Peter Ache, Rainer Hedrich, Cornelia Herschbach, Heinz Rennenberg
Water limitation of plants causes stomatal closure to prevent water loss by transpiration. For this purpose, progressing soil water deficit is communicated from roots to shoots. Abscisic acid (ABA) is the key signal in stress-induced stomatal closure, however, ABA as early xylem-delivered signal is still a matter of debate. In the present study, poplar plants were exposed to water stress to investigate xylem sap sulfate and ABA, stomatal conductance and sulfate transporter (SULTR) expression. In addition, stomatal behavior and expression of ABA receptors, drought responsive genes, transcription factors and NCED3 were studied after feeding sulfate and ABA to detached poplar leaves and epidermal peels of Arabidopsis...
April 26, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28440368/mangiferin-functionalized-radioactive-gold-nanoparticles-mgf-198-aunps-in-prostate-tumor-therapy-green-nanotechnology-for-production-in-vivo-tumor-retention-and-evaluation-of-therapeutic-efficacy
#10
A Y Al-Yasiri, M Khoobchandani, C S Cutler, L Watkinson, T Carmack, C J Smith, M Kuchuk, S K Loyalka, A B Lugão, K V Katti
We report here an innovative feature of green nanotechnology-focused work showing that mangiferin-a glucose functionalized xanthonoid, found in abundance in mango peels-serves dual roles of chemical reduction and in situ encapsulation, to produce gold nanoparticles with optimum in vivo stability and tumor specific characteristics. The interaction of mangiferin with a Au-198 gold precursor affords MGF-(198)AuNPs as the beta emissions of Au-198 provide unique advantages for tumor therapy while gamma rays are used for the quantitative estimation of gold within the tumors and various organs...
April 25, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28438032/influence-of-drying-methods-on-chemical-compositions-antioxidant-and-antibacterial-activity-of-essential-oil-from-lemon-peel
#11
Liang-Liang Zhang, Shuang Lv, Jian-Guo Xu, Li-Fang Zhang
The influence of natural, hot-air and infrared drying on chemical composition and bioactivity of lemon peel essential oil are investigated in this study. The results showed that drying resulted in losses or increases of some components or production of some new substances, but the d-limonene (59.52-70.01%) was found as the main component of essential oil. Drying brought about decreases in the yield, antioxidant and antibacterial activity of essential oil. However, the natural drying had little effect, while the hot-air and infrared drying resulted in significant decreases in these parameters, especially at the higher temperature...
April 24, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28435776/-self-peel-off-transfer-produces-ultrathin-polyvinylidene-fluoride-based-flexible-nanodevices
#12
Yanlong Tai, Gilles Lubineau
Here, a new strategy, self-peel-off transfer, for the preparation of ultrathin flexible nanodevices made from polyvinylidene-fluoride (PVDF) is reported. In this process, a functional pattern of nanoparticles is transferred via peeling from a temporary substrate to the final PVDF film. This peeling process takes advantage of the differences in the work of adhesion between the various layers (the PVDF layer, the nanoparticle-pattern layer and the substrate layer) and of the high stresses generated by the differential thermal expansion of the layers...
April 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/28420255/chemical-and-common-burns-in-children
#13
Shan Yin
Burns are a common cause of preventable morbidity and mortality in children. Thermal and chemical burns are the most common types of burns. Their clinical appearance can be similar and the treatment is largely similar. Thermal burns in children occur primarily after exposure to a hot surface or liquid, or contact with fire. Burns are typically classified based on the depth and total body surface area, and the severity and onset of the burn can also depend on the temperature and duration of contact. Chemical burns are caused by chemicals-most commonly acids and alkalis-that can damage the skin on contact...
May 2017: Clinical Pediatrics
https://www.readbyqxmd.com/read/28420253/myths-on-chemical-burns-in-the-diaper-area
#14
Kara Shah
Over the past several years, a number of articles and online posts have circulated on the Internet associating use of disposable and cloth diapers with chemical burns on babies' skin. Because both mild chemical burns and diaper dermatitis (diaper rash) can cause skin redness and peeling, it is not surprising that some confusion has arisen regarding the association between these two conditions. However, diapers cannot cause chemical burns because they are made of inert materials. Diaper rash and chemical burns are distinct conditions that require different evaluation and treatment, which is why it is important for pediatricians to help parents understand the difference...
May 2017: Clinical Pediatrics
https://www.readbyqxmd.com/read/28403265/improvement-of-atrophic-acne-scars-in-skin-of-color-using-topical-synthetic-epidermal-growth-factor-egf-serum-a-pilot-study
#15
Marie Alexia Stoddard, Jennifer Herrmann, Lauren Moy, Ronald Moy
<p>BACKGROUND: Atrophic scarring in skin of color is a common, permanent, and distressing result of uncontrolled acne vulgaris. Ablative lasers and chemical peels are frequently used to improve the appearance of atrophic scars, primarily through the stimulation of collagen and elastin; however, these treatment modalities are associated with risks, such as dyspigmentation and hypertrophic scarring, especially in patients with darker skin.</p> <p>OBJECTIVE: We evaluated the efficacy of topically applied synthetic epidermal growth factor (EGF) serum in reducing the appearance of atrophic acne scars in skin of color...
April 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28403262/combination-of-in-office-chemical-peels-with-a-topical-comprehensive-pigmentation-control-product-in-skin-of-color-subjects-with-facial-hyperpigmentation
#16
Jeanine Downie, Katie Schneider, Lisa Goberdhan, Elizabeth T Makino, Rahul C Mehta
<p>Dyschromia is one of the primary complaints for patients with skin of color. Treatments need to achieve a balance between tolerability and efficacy to address existing hyperpigmentation without causing additional damage that could trigger post-inflammatory hyperpigmentation (PIH). An open-label, single-center study was conducted to assess the efficacy of a novel comprehensive pigmentation control serum (LYT2) combined with a series of three very superficial chemical peels (VP) in skin of color subjects...
April 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28392783/agro-industrial-wastes-for-production-of-biosurfactant-by-bacillus-subtilis-anr-88-and-its-application-in-synthesis-of-silver-and-gold-nanoparticles
#17
Ashwini N Rane, Vishakha V Baikar, D V Ravi Kumar, Rajendra L Deopurkar
Biosurfactants, surface-active amphiphilic compounds, despite having a wide range of applications, have a high cost of production, which severely restricts their use. For cheaper production of biosurfactant, we investigated the potential of the indigenously isolated biosurfactant producing organism, Bacillus subtilis ANR 88, to grow on different cheap carbon sources (molasses, whey, and extracts of potato peels, orange peels, banana peels, and bagasse). We found that, B. subtilis ANR 88 used significant amounts of total sugar to produce cell biomass and biosurfactant...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28386473/isolation-of-saccharomyces-cerevisiae-from-pineapple-and-orange-and-study-of-metal-s-effectiveness-on-ethanol-production
#18
Armanul Nasir, Shafkat Shamim Rahman, Md Mahboob Hossain, Naiyyum Choudhury
In view of the anticipated shortage of the traditional supplies of fossil fuels, there is a great deal of interest in the production of ethanol as an alternative biofuel in recent years. The main objective of this research work was to isolate and characterize stress tolerant, high potential ethanol producing yeast strains from various fruit peel. Two yeast isolates from pineapple (Pa) and orange (Or) have been isolated, characterized on the basis of morphological and physic-chemical characters and optimized on ethanol producing capability using sugarcane molasses as substrate...
March 2017: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/28365436/longan-seed-and-peel-as-environmentally-friendly-corrosion-inhibitor-for-mild-steel-in-acid-solution-experimental-and-theoretical-studies
#19
Liu Li Liao, Shi Mo, Hong Qun Luo, Nian Bing Li
Longan seed and peel were extracted and used for impeding the corrosion of mild steel in hydrochloric acid solution. Experimental analyses indicate that the water extract of Longan's seed and peel, a mixed type inhibitor, can be chemically adsorbed onto the steel surface, and its inhibition effect rises with increasing extract concentration. To understand the adsorption mechanism and the contributions of the four main compounds of the extract to corrosion protection effect, quantum chemical methods and infrared spectrum were also employed...
March 23, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28351770/2d-nmr-investigation-and-in%C3%A2-vitro-evaluation-of-antioxidant-antigenotoxic-and-estrogenic-antiestrogenic-activities-of-strawberry-grape
#20
Brigida D'Abrosca, Margherita Lavorgna, Monica Scognamiglio, Chiara Russo, Vittoria Graziani, Concetta Piscitelli, Antonio Fiorentino, Marina Isidori
Strawberry grape is considered beneficial due to its extensive phytochemical properties. To expand the knowledge about the chemical constituents and the biological activities of the whole plant, 2D-NMR investigation has been carried out on pulp, peel, seeds, stalks and leaves. Catechin and epicatechin were identified as the main constituents of the seed extract, quercetin and ferulic acid were detected in the leaves and malvidin and cyanidin glucopyranoside in the peels. The leaf, stalk and seed extracts were found to be very rich in phytochemicals and were tested for their ability to reduce the mutagenicity and genotoxicity of standard agents via Salmonella mutagenicity assay and SOS chromotest, respectively...
March 27, 2017: Food and Chemical Toxicology
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