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https://www.readbyqxmd.com/read/28735573/chemoattractant-activity-of-tris-hydroxymethyl-aminomethane-for-brugia-pahangi-infective-third-stage-larvae
#1
Y Mitsui, K E Ureña-Tatis, Y Aoki
Urocanic acid (UCA) is known as a major chemoattractant for Strongyloides stercoralis infective third-stage larvae (L3). Since Brugia pahangi is a skin-penetrating parasitic nematode similar to S. stercoralis, UCA was expected to be a chemoattractant for B. pahangi L3. Thus, the chemoattractant activity of UCA for B. pahangi L3 was assessed. The chemotactic responses of B. pahangi L3 to UCA or acetic acid (CH3COOH) dissolved in amine solutions were assessed using an agar-plate assay. A test solution of 200 mm UCA dissolved in aqueous 270 mm tris(hydroxymethyl)aminomethane (Tris) significantly attracted B...
July 24, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28732306/photostability-testing-using-online-reactor-hplc-hyphenation-and-mass-spectrometric-compound-identification-illustrated-by-ketoprofen-as-model-compound
#2
Jaber Assaf, Diego Zulkiewicz Gomes, Bernhard Wuest, Maria Kristina Parr
Investigations on the photochemical stability of pharmaceutical substances are mandatory in drug development and licensing as photo-induced degradation of an active pharmaceutical ingredient (API) may not only lead to decreased API concentrations but also to toxic or reactive products. Thus, the US Food and Drug Administration (FDA) and the International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use (ICH) issued Guidance for Industry Q1B "Photostability Testing of New Drug Substances and Products" for testing of pure but also packed drugs...
July 8, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28728169/correlations-between-macular-skin-and-serum-carotenoids
#3
Christopher D Conrady, James P Bell, Brian M Besch, Aruna Gorusupudi, Kelliann Farnsworth, Igor Ermakov, Mohsen Sharifzadeh, Maia Ermakova, Werner Gellermann, Paul S Bernstein
Purpose: Ocular and systemic measurement and imaging of the macular carotenoids lutein and zeaxanthin have been employed extensively as potential biomarkers of AMD risk. In this study, we systematically compare dual wavelength retinal autofluorescence imaging (AFI) of macular pigment with skin resonance Raman spectroscopy (RRS) and serum carotenoid levels in a clinic-based population. Methods: Eighty-eight patients were recruited from retina and general ophthalmology practices from a tertiary referral center and excluded only if they did not have all three modalities tested, had a diagnosis of macular telangiectasia (MacTel) or Stargardt disease, or had poor AFI image quality...
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28727890/surfactant-concentration-and-type-affects-the-removal-of-escherichia-coli-from-pig-skin-during-a-simulated-handwash
#4
Dane A Jensen, Michael A Rogers, Donald W Schaffner
The effect of surfactant type and concentration on a bland soap formulations ability to remove bacteria from hands remains largely unstudied. Several combinations of surfactants and water were combined to test bacterial removal efficacy using a handwashing device (two pieces of pig skin and a mechanical motor) to simulate a handwash. A nalidixic acid resistant, non-pathogenic strain of Escherichia coli (ATCC 11229) was used. Two anionic surfactants, sodium lauryl sulfate and sodium stearoyl lactylate, and two nonionic surfactants, poloxamer 407 and sorbitan monostearate, each in concentrations of 2%, 5%, and 10% were studied...
July 20, 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28724312/in-vitro-skin-decontamination-of-paraoxon-wet-type-cleansing-effect-of-selected-detergents
#5
Ruzena Pavlikova, Jan Misik, Jiri Cabal, Jan Marek, Kamil Kuca
The aim of this study was to determine optimal conditions for in vitro skin decontamination using water and detergents as decontamination agents and to test the cleansing efficiency of selected detergents. Experiments were performed using a peristaltic pump for showering of pig skin in modified static diffision cells. Several conditions were tested including different flow rates (from 5 to 33 ml.s(-1)), quantity of rinsing fluid (from 40 to 400 ml), and concentration of detergents (2; 5; 10%). Further, several types of detergents/commercial decontamination agents were evaluated under the selected conditions to find the most effective means of decontamination...
July 20, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28719475/allergic-contact-dermatitis-from-methylisothiazolinone-in-residential-wall-paint
#6
Molly C Goodier, Linda Ljungberg, Christina Persson, Malin Engfeldt, Magnus Bruze, Erin M Warshaw
A 33-year-old woman presented to our clinic for suspected photoallergic contact dermatitis with a recent episode of severe, vesicular dermatitis involving exposed skin and correlating with relocation to a new home. Biopsy results showed spongiotic and lichenoid dermatitis with eosinophils. Patch test results showed a very strong (+++) reaction to methylisothiazolinone (MI), mild (+) reaction to MI/methylchloroisothiazolinone, and no reaction to benzisothiazolinone. These allergens were found in several personal products...
July 2017: Dermatitis
https://www.readbyqxmd.com/read/28708122/role-of-zucchini-and-its-distinctive-components-in-the-modulation-of-degenerative-processes-genotoxicity-anti-genotoxicity-cytotoxicity-and-apoptotic-effects
#7
Damián Martínez-Valdivieso, Rafael Font, Zahira Fernández-Bedmar, Tania Merinas-Amo, Pedro Gómez, Ángeles Alonso-Moraga, Mercedes Del Río-Celestino
Zucchini (Cucurbita pepo subsp. pepo) is a seasonal vegetable with high nutritional and medical values. Many useful properties of this fruit are attributed to bioactive compounds. Zucchini fruits ("Yellow" and "Light Green" varieties) and four distinctive components (lutein, β-carotene, zeaxanthin and dehydroascorbic acid) were selected. Firstly, the lutein, β-carotene, zeaxanthin and dehydroascorbic acid contents were determined in these fruits. Then, in order to evaluate the safety and suitability of their use, different assays were carried out: (i) genotoxicity and anti-genotoxicity tests to determine the safety and DNA-protection against hydrogen peroxide; (ii) cytotoxicity; and (iii) DNA fragmentation and Annexin V/PI (Propidium Iodide) assays to evaluate the pro-apoptotic effect...
July 14, 2017: Nutrients
https://www.readbyqxmd.com/read/28707999/development-of-a-membrane-of-poly-l-co-d-l-lactic-acid-co-trimethylene-carbonate-with-aloe-vera-an-alternative-biomaterial-designed-to-improve-skin-healing
#8
Daniel Komatsu, Daniel V Mistura, Adriana Motta, Juliana A Domingues, Moema A Hausen, Eliana Duek
The search for new therapies and drugs that act as topical agents to relieve pain and control the infectious processes in burns always attracted interest in clinical trials. As an alternative to synthetic drugs, the use of natural extracts is useful in the development of new strategies and formulations for improving the life quality. The aim of this study was to develop a wound dressing using Poly(L-co-D,L lactic acid-co-TMC) (PLDLA-co-TMC) containing aloe vera (AV). This natural plant extract is known for its modulatory effects under healing process...
January 1, 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/28707264/evaluation-of-propylene-glycol-nanoliposomes-containing-curcumin-on-burn-wound-model-in-rat-biocompatibility-wound-healing-and-anti-bacterial-effects
#9
Nooshin Kianvash, Abbas Bahador, Maryam Pourhajibagher, Homanaz Ghafari, Vahid Nikoui, Sayed Mehdi Rezayat, Ahmad Reza Dehpour, Alireza Partoazar
Curcumin is an effective wound healing agent in burn therapy, but due to its low bioavailability, it is required to be formulated for topical therapy. Liposomal nanocarriers are developed as stable and efficient dermal delivery systems. In this study, we prepared curcumin-propylene glycol liposomes (Cur-PgL) to treat animals subjected to second degree burns. The characterization tests confirmed the production of monodisperse nanoliposomes of average size of about 145 nm with high entrapment efficiency percentage and a sustained release behavior...
July 13, 2017: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/28704989/in-vitro-study-of-the-influence-of-octocrylene-on-a-selected-metastatic-melanoma-cell-line
#10
Tanja Prunk Zdravković, Bogdan Zdravković, Marko Zdravković, Barbara Dariš, Mojca Lunder, Polonca Ferk
BACKGROUND: Octocrylene (OCT) is one of the most widespread chemical UV filters used in sunscreens and cosmetic products. Despite the use of sunscreens and personal care products over decades, melanoma as the most serious and aggressive form of skin cancer is still a cause of concern. Hence the aim of this study was to investigate any potential influence of OCT on metabolic activity, cytotoxicity and ABCB5 mRNA expression in melanoma cells. The ABCB5 transmembrane protein was tested due to its well-known role in the initiation, invasion and metastatic spread of various cancers, including melanoma...
July 11, 2017: Giornale Italiano di Dermatologia e Venereologia: Organo Ufficiale, Società Italiana di Dermatologia e Sifilografia
https://www.readbyqxmd.com/read/28704961/extraction-of-pathogenesis-related-proteins-and-phenolics-in-sauvignon-blanc-as-affected-by-grape-harvesting-and-processing-conditions
#11
Bin Tian, Roland Harrison, James Morton, Marlene Jaspers, Simon Hodge, Claire Grose, Mike Trought
Thaumatin-like proteins (TLPs) and chitinases are the two main groups of pathogenesis-related (PR) proteins found in wine that cause protein haze formation. Previous studies have found that phenolics are also involved in protein haze formation. In this study, Sauvignon Blanc grapes were harvested and processed in two vintages (2011 and 2012) by three different treatments: (1) hand harvesting with whole bunch press (H-WB); (2) hand harvesting with destem/crush and 3 h skin contact (H-DC-3); and (3) machine harvesting with destem/crush and 3 h skin contact (M-DC-3)...
July 12, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28704210/factor-xiii-deficiency-in-south-of-tunisia
#12
Ines Maaloul, Moez Medhaffer, Nacim Louhichi, Imen Krichen, Sofien Alibi, Sana Kmiha, Hajer Aloulou, Faiza Fakhfakh, Moez Elloumi, Choumous Kallel, Mongia Hachicha
: Factor XIII deficiency is a rare autosomal recessive disorder of hemostasis characterized by a plasmatic factor XIII level less than 1% in homozygote and bleeding as of the youth. The aim of the study is to describe the clinical features and the outcome of the patients and to determine molecular characteristics. A retrospective study, was conducted on seven patients with factor XIII deficiency in the department of hematology and pediatrics, Hedi Chaker Hospital, Sfax, Tunisia during the period of 14 years (2001-2014)...
July 12, 2017: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/28698509/almond-skin-extracts-abrogate-hsv-1-replication-by-blocking-virus-binding-to-the-cell
#13
Carlo Bisignano, Giuseppina Mandalari, Antonella Smeriglio, Domenico Trombetta, Maria Musarra Pizzo, Rosamaria Pennisi, Maria Teresa Sciortino
The aim of the present research was to determine the effect of almond skin extracts on herpes simplex virus 1 (HSV-1) replication. Drug-resistant strains of HSV frequently develop following therapeutic treatment. Therefore, the discovery of novel anti-HSV drugs deserves great effort. Here, we tested both natural (NS) and blanched (BS) polyphenols-rich almond skin extracts against HSV-1. HPLC analysis showed that the prevalent compounds in NS and BS extracts contributing to their antioxidant activity were quercetin, epicatechin and catechin...
July 10, 2017: Viruses
https://www.readbyqxmd.com/read/28694104/antimicrobial-natural-product-research-a-review-from-a-south-african-perspective-for-the-years-2009-2016
#14
REVIEW
S Van Vuuren, D Holl
ETHNOPHARMACOLOGICAL RELEVANCE: This review provides information on the antimicrobial research which has taken place on South African natural products for the last eight years (2009-2016). This important field is the backbone of all studies involving the use of medicinal plants against infectious diseases and hence can form the mainstay for future studies. MATERIALS AND METHODS: All publications within the years 2009-2016 were considered. Exclusion criteria were studies not involving South African medicinal natural products and those publications where full articles could not be accessed...
July 7, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28692913/particle-and-bioaerosol-characteristics-in-a-paediatric-intensive-care-unit
#15
Congrong He, Ian M Mackay, Kay Ramsay, Zhen Liang, Timothy Kidd, Luke D Knibbs, Graham Johnson, Donna McNeale, Rebecca Stockwell, Mark G Coulthard, Debbie A Long, Tara J Williams, Caroline Duchaine, Natalie Smith, Claire Wainwright, Lidia Morawska
The paediatric intensive care unit (PICU) provides care to critically ill neonates, infants and children. These patients are vulnerable and susceptible to the environment surrounding them, yet there is little information available on indoor air quality and factors affecting it within a PICU. To address this gap in knowledge we conducted continuous indoor and outdoor airborne particle concentration measurements over a two-week period at the Royal Children's Hospital PICU in Brisbane, Australia, and we also collected 82 bioaerosol samples to test for the presence of bacterial and viral pathogens...
July 7, 2017: Environment International
https://www.readbyqxmd.com/read/28686044/anti-biofilm-properties-of-a-mupirocin-spray-formulation-against-escherichia-coli-wound-infections
#16
Dhamodharan Bakkiyaraj, Rutthapol Sritharadol, Alwar Ramanujam Padmavathi, Titpawan Nakpheng, Teerapol Srichana
Mupirocin ointment is a widely used topical drug for the treatment of bacterial skin infections. However, ointments have some limitations which motivated the development of a film forming spray of mupirocin. Mupirocin spray (2%) was formulated with Eudragit E100 as a film forming agent and tested for its antibacterial and anti-biofilm activities against Escherichia coli, a skin pathogen causing wound and surgical site infections. Treatment with mupirocin spray resulted in significant antibacterial and anti-biofilm activities (inhibition and disruption) with single spray and sub-actual dose concentrations at par with the commercial ointment concentration...
July 7, 2017: Biofouling
https://www.readbyqxmd.com/read/28685453/tissue-blood-volume-parameters-measured-by-continuous-wave-and-spatially-resolved-nirs-show-different-changes-during-prolonged-cycling-exercise
#17
Takuya Osawa, Keisuke Shiose, Hideyuki Takahashi
Near-infrared spectroscopy (NIRS) shows two types of tissue blood volume (BV) parameters: the total hemoglobin concentration (cHb; assessed by continuous-wave NIRS) and the normalized tissue hemoglobin index (nTHI; evaluated by spatially resolved NIRS). This study was performed to investigate the differences between cHb and nTHI, estimated by calibration using acute reduction of BV at the onset of exercise. Seven active male volunteers (age: 22  ±  4 years) performed a prolonged (60-min) cycling exercise test at 65% or 70% of the peak oxygen uptake...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28676932/monitoring-of-airborne-fungal-spore-load-in-relation-to-meteorological-factors-air-pollutants-and-allergic-symptoms-in-farakka-an-unexplored-biozone-of-eastern-india
#18
Shipra Roy, Arindom Chakraborty, Saibal Maitra, Kashinath Bhattacharya
Fungi are important components of atmosphere which play a major role in causing respiratory allergy upon inhalation. An airborne fungal spore survey was carried out in two outdoor environments in Farakka-an unexplored township covering the National Thermal Power Station, West Bengal, India for a period of 2 years (October 2013 to September 2015). A Burkard personal volumetric air sampler was used at 15 days interval to collect the total fungal spore load. A fungal spore calendar has been prepared depicting monthly average spore concentration in the air...
August 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28670109/controlled-release-of-optimized-electroporation-enhances-the-transdermal-efficiency-of-sinomenine-hydrochloride-for-treating-arthritis-in-vitro-and-in-clinic
#19
Shun Feng, Lijun Zhu, Zhisheng Huang, Haojia Wang, Hong Li, Hua Zhou, Linlin Lu, Ying Wang, Zhongqiu Liu, Liang Liu
Sinomenine hydrochloride (SH) is an ideal drug for the treatment of rheumatoid arthritis and osteoarthritis. However, high plasma concentration of systemically administered SH can release histamine, which can cause rash and gastrointestinal side effects. Topical delivery can increase SH concentration in the synovial fluid without high plasma level, thus minimizing systemic side effects. However, passive diffusion of SH was found to be inefficient because of the presence of the stratum corneum layer. Therefore, an effective method is required to compensate for the low efficiency of SH passive diffusion...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28666832/nano-cellulose-dispersed-chitosan-film-with-ag-nps-curcumin-an-in-vivo-study-on-albino-rats-for-wound-dressing
#20
S K Bajpai, Sonam Ahuja, N Chand, M Bajpai
With an aim to develop chitosan film with controllable swelling behavior and maximum antimicrobial efficacy, we hereby report cellulose nano crystals loaded chitosan films with Curcumin/Ag nano particles embedded as strong antimicrobial agents. The CNC had average size of 40-90nm with poly dispersity index of 3.641. The TEM analysis of Ag NPs, produced via DMF reduction, revealed a particle size range of 15-25nm. The Surface Plasmon resonance (SPR) of these Ag NPs shifted from 380 to 440nm, with the increase in concentration of Ag (I)...
June 27, 2017: International Journal of Biological Macromolecules
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