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Omid Savabi, Farahnaz Nejatidanesh, Kamran Poshang Bagheri, Leila Karimi, Ghazal Savabi
Background: Disinfection of dental impression is mandatory for preventing the cross infection between dental staff and dental laboratory. Ozone as a disinfectant can be used in various ways in dentistry. The aim of this study was to evaluate the efficacy of ozonated water for disinfection of irreversible hydrocolloid impression materials and preventing cross-contamination. Methods: Thirty-two circular specimens (1 cm diameter and 2 mm thickness) of irreversible hydrocolloid impression material were made...
2018: International Journal of Preventive Medicine
Rana Imani, Satya Prakash, Hojatollah Vali, Shahab Faghihi
The successful application of nucleic acid-based therapy for the treatment of various cancers is largely dependent on a safe and efficient delivery system. A dual-functionalized graphene oxide (GO)-based nanocarrier with the conjugation of aminated-polyethylene glycol (PEG-diamine) and octa-arginine (R8) for the intracellular delivery of nucleic acids is proposed. The functionalized sites are covalently co-conjugated and the PEG : R8 molar ratio is optimized at 10 : 1 to achieve a hydrocolloidally stable size of 252 ± 2...
May 14, 2018: Biomaterials Science
Yayuan Zhang, Zhengbiao Gu, Ling Zhu, Yan Hong
The effect of hydrocolloids (Arabic gum, guar gum, xanthan gum) on the thermal, rheological, and microstructural changes of corn starch during gelatinization was studied by combining multiple analytical techniques. Arabic gum located in the continuous phase had no significant delaying effect on starch gelatinization. A two phase system could be directly observed by scanning electron microscopy. The analysis of variance suggested that xanthan gum could restrict the swelling of starch granules and the destruction of granule structure more effectively than other hydrocolloids tested...
May 3, 2018: International Journal of Biological Macromolecules
Rodrigo Collado-Chagoya, Javier Hernández-Romero, Gumaro Alejandro Eliosa-Alvarado, Ana Carmen García-González, Rosa Isela Campos-Gutiérrez, Andrea Velasco-Medina, Guillermo Velázquez-Sámano
BACKGROUND: Psyllium is a derivative of Plantago ovata ground seed and husk that is used as bulk-forming laxatives owing to its hydrocolloid properties. CASE REPORT: 43-year-old female nurse with previous diagnosis of drug allergy and allergic rhinitis who, after the preparation and administration of a laxative, developed rhinoconjunctivitis symptoms, urticarial syndrome, angioedema and bronchospasm, which led to conclude that she had an anaphylactic reaction. She was treated with adrenaline, corticosteroids and antihistamines...
January 2018: Revista Alergia Mexico: Organo Oficial de la Sociedad Mexicana de Alergia e Inmunología, A.C
Takuto Sawazaki, Yukari Nakajima, Tamae Urai, Kanae Mukai, Megumi Ohta, Ikuko Kato, Azusa Kawaguchi, Yui Kinoshita, Yuri Kumagai, Ayaka Sakashita, Asuka Yamazaki, Toshio Nakatani
INTRODUCTION: The wound healing properties of honey, including blossom honey, are well known; however, the effects of honeydew honey during the wound healing process have not yet been investigated and thus remain unclear. OBJECTIVE: This study compares the effects of honeydew honey with those of blossom honey. MATERIALS AND METHODS: A total of 140 mice were divided into 2 control groups, which received either a hydrocolloid dressing (HCD; n = 22) or gauze (n = 22), and 4 experimental groups: honeydew honey (n = 23), Acacia honey (n = 23), Manuka honey (n = 22), and Japanese Pharmacopoeia honey (n = 28)...
April 20, 2018: Wounds: a Compendium of Clinical Research and Practice
Francisco Miguel Portela da Gama, Fernando Dourado
Acetic acid bacteria (AAB) have been used in various fermentation processes. Of several ABB, the bacterial nanocellulose (BNC) producers, notably Komagataeibacter xylinus , appears as an interesting species, in large part because of their ability in the secretion of cellulose as nano/microfibrils. In fact, BNC is characterized by a native nanofibrillar structure, which may outperform the currently used celluloses in the food industry as a promising novel hydrocolloid additive. During the last couple of years, a number of companies worldwide have introduced some BNC-based products to the market...
2018: BioImpacts: BI
Kishore Ginjupalli, Tushar Shaw, Chaitanya Tellapragada, Ramakrishna Alla, Lokendra Gupta, Nagaraja Upadhya Perampalli
OBJECTIVES: The main objective of the present in vitro study is to evaluate the antimicrobial activity and properties of irreversible hydrocolloid impression material incorporated with silver nanoparticles of varying size at different concentrations. METHODS: Silver nanoparticles of 80-100, 50-80, 30-50 and 10-20nm size were added to irreversible hydrocolloid impression material at 0.5, 1.0, 2.0 and 5.0wt%. Antimicrobial activity of the silver nanoparticle incorporated irreversible hydrocolloid was measured using disk diffusion method...
April 26, 2018: Dental Materials: Official Publication of the Academy of Dental Materials
Furong Tao, Chengmei Shi, Yuezhi Cui
BACKGROUND: Among the natural polymers able to form edible films, starch and gelatin (Gel) are potential sources. Corn starch is a polysaccharide widely produced around the world, and gelatin differs from other hydrocolloids as a fully digestible protein, containing nearly all the essential amino acids, except tryptophan. Based on this, with advantages such as abundance, relatively low cost, biodegradability, and edibility, studies considering alternative systems for food protection that utilize biopolymers have increased significantly in the recent years...
April 24, 2018: Journal of the Science of Food and Agriculture
E Garval, J Plee, C Lesage, A Grange-Prunier, P Bernard, G Perceau
INTRODUCTION: Allergic contact dermatitis around chronic leg ulcers (CLU) is a common complication in patients presenting CLU and prolongs healing times. The aim of this study was to describe the rate of sensitization to modern dressings (MD) used in these patients and to assess whether there is a relation between the number of sensitizations and ulcer type, the time from onset of the ulcer, and patient age and gender. PATIENTS AND METHODS: We conducted a retrospective study at Reims University Hospital between 2010 and 2014 that included all patients with CLU of vascular etiology surrounded by eczematous lesions, and who had one of the patch-tests in the following 3 series: European baseline±leg ulcers±corticosteroids...
April 17, 2018: Annales de Dermatologie et de Vénéréologie
Alba du Toit, Maryna de Wit, Arno Hugo
Mucilage extracted from cactus pear cladodes is a hydrocolloid gum. It is a novel, natural, low-kilojoule, cost-effective texture-modifying ingredient in functional food products. Yet, the cultivar with the most optimal nutrient content and the preferred harvest times are as yet unknown. For this reason, mucilage from three Opuntia ficus-indica (Algerian, Morado and Gymno-Carpo) and one Opuntia robusta (Robusta) cultivar were investigated to determine their nutrient content over six months. Nutrients that contribute energy (10...
April 16, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Livia Francine Soriano, Conn McGrath, Mark Hawthorne, Arucha Linda Ekeowa-Anderson
Lichen amyloidosis (LA) is a form of primary localized cutaneous amyloidosis (PLCA) characterized by bilateral intensely itchy domed scaly hyperkeratotic papules. Lichen amyloidosis is rare and affects men more than women. It is uncommonly seen in the western world but more prevalent in Asia. These papules most typically affect the shins and occasionally the arms and torso. Lichen amyloidosis has been reported in association with autoimmune disorders and after prolonged exfoliation and friction of affected skin...
March 7, 2018: Dermatology Online Journal
Rupandeep Kaur Samra, Shreenivas Vasant Bhide
Objectives: It was to analyse and compare the effect of different disinfectant systems on the dimensional stability of commonly used irreversible hydrocolloid and addition silicone impression materials from developing countries as compared to materials from developed countries. Material and methods: Disinfectant systems used were glutaraldehyde, sodium hypochlorite and ultraviolet chamber. The stability after disinfection of commonly used alginate and addition silicone of native origin (Algin-Gum & Ad-Sil) was compared with similar impression materials from developed countries (Vignette and Aquasil) and results compared...
April 2018: Saudi Dental Journal
Seira Morimune-Moriya, Michaela Salajkova, Qi Zhou, Takashi Nishino, Lars A Berglund
Although research on nanopaper structures from cellulose nanofibrils (CNF) is well established, the mechanical behavior is not well understood, especially not when CNF is combined with hard nanoparticles. Cationic CNF (Q-CNF) was prepared and successfully decorated by anionic nanodiamond (ND) nanoparticles in hydrocolloidal form. The Q-CNF/ND nanocomposites were filtered from a hydrocolloid and dried. Unlike many other carbon nanocomposites, the Q-CNF/ND nanocomposites were optically transparent. Reinforcement effects from the nanodiamond were remarkable, such as Young's modulus (9...
April 5, 2018: Biomacromolecules
Liset Lansaat, Bertram de Kleijn, Frans Hilgers, Bernard van der Laan, Michiel van den Brekel
Introduction  To prevent or diminish pulmonary problems in laryngectomized patients, continuous use of a heat and moisture exchanger (HME) is recommended. Therefore, automatic speaking valves are also often combined with an HME to enable hands-free speech. In order to keep these devices in place, most commonly, peristomal patches are used. Objective  This prospective clinical 2 × 2 crossover study aims at assessing the added value of a new patch for HME application, the Provox StabiliBase OptiDerm (SBO)...
April 2018: International Archives of Otorhinolaryngology
Preethi Kusugal, Ritu Sunil Chourasiya, Zarir Ruttonji, Preeti Astagi, Ajay Kumar Nayak, Abhishekha Patil
Purpose: To overcome the poor dimensional stability of irreversible hydrocolloids, alternative materials were introduced. The dimensional changes of these alternatives after delayed pouring are not well studied and documented in the literature. The purpose of the study is to evaluate and compare the surface detail reproduction and dimensional stability of two irreversible hydrocolloid alternatives with an extended-pour irreversible hydrocolloid at different time intervals. Materials and Methods: All testing were performed according to the ANSI/ADA specification number 18 for surface detail reproduction and specification number 19 for dimensional change...
January 2018: Contemporary Clinical Dentistry
Bo Yuan, Christos Ritzoulis, Jianshe Chen
This is an investigation of the shear and extensional properties of okra polysaccharide-saliva mixtures, intended to model the mechanical behavior a food hydrocolloid during oral processing. Shear measurements show that incorporation of okra mucilage in saliva interferes with the self-assembly of salivary mucins, with partly detrimental effects on the low-shear viscosity of the mixture. This is counter-acted by excluded volume effects, as the overall concentration of macromolecules in the mixture reaches the semi-dilute regime...
April 2018: Food Research International
Pei-Ying Yeh, Hsiao-Ping Chen, Jing-Yi Wu
Simultaneous pancreas-kidney (SPK) transplantation is the primary surgical treatment for type I diabetes mellitus with end-stage renal disease. However, this transplant surgery has a high-risk of surgical complications, including duodenal anastomotic leakage, which may lead to pancreas transplantation failure if the leakage worsens. This case report describes a patient who suffered from duodenal anastomotic leakage after SPK transplantation. The digestive enzymes eroded the wound and skin around the wound, resulting in periwound moisture-associated dermatitis...
April 2018: Hu Li za Zhi the Journal of Nursing
Chai-Yee Chin, Pei-Yuen Ng, Shiow-Fern Ng
Previously, Moringa oleifera leaf (MOL) standardised aqueous extract-loaded films were successfully developed and they showed potential wound healing activity in vitro. The objective of this study was to evaluate in vivo dermal safety as well as wound healing efficacy of these MOL film dressings (containing 0.1, 0.5 and 1% MOL) on diabetic rat model. The acute dermal toxicity was carried out on healthy rats, and signs of toxicity over 14 days were observed. For wound healing studies, excision and abrasion wounds were created out on the STZ/HFD-induced diabetic rat model and the wound healing was studied over 21 days...
March 20, 2018: Drug Delivery and Translational Research
Vassiliki Tsioli, Pagona G Gouletsou, Apostolos D Galatos, Dimitra Psalla, Antonios Lymperis, Aikaterini I Sideri, Lyssimachos G Papazoglou
The objective of the present study was to evaluate the effect of a hydrocolloid dressing on second intention wound healing in cats. Two full-thickness skin wounds, measuring 2 × 2 cm, were created on both sides of the dorsal midline of 10 cats; bilaterally, one randomly selected wound was bandaged with a hydrocolloid dressing and the second one (control) with a semiocclusive pad. Subjective clinical evaluation of granulation tissue formation, of the quantity and nature of wound exudate, and planimetry were performed on the right-side wounds, and histological examination on the left...
March 20, 2018: Journal of the American Animal Hospital Association
Wenjing Wan, Baojun Xu
BACKGROUND: We aimed to develop a beverage using beta-glucan and whey protein isolate (WPI). Furthermore, we evaluated the sensory attributes and changes of the physiochemical properties (pH value, total acidity, total soluble solids, sugar-acid ratio, color, viscosity, turbidity, and browning index) of the beverage during 48-hour storage by comparison with the commercial product and blank sample. RESULTS: The developed beverage had similar sweetness, smoothness, and overall acceptance as those of the commercial and blank samples...
March 12, 2018: Journal of the Science of Food and Agriculture
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