27 results on '"Desinfectants"'
Search Results
2. Avaliação da contaminação bacteriana em desinfetantes de uso domiciliar Evaluation of bacterial contamination in disinfectants for domestic use
- Author
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Fumie Miyagi, Jorge Timenetsky, and Flávio Alterthum
- Subjects
Desinfetantes ,Compostos de benzalcônio ,Burkholderia cepacia ,Alcaligenes xylosoxidans ,Serratia marcescens ,Contaminação ,Resistência microbiana a drogas ,Desinfectants ,Benzalkonium compounds ,Contamination ,Drug resistence, microbial ,Public aspects of medicine ,RA1-1270 - Abstract
OBJETIVO: Avaliar desinfetantes de uso domiciliar, identificando a presença de bactérias contaminantes, e conhecer o nível de tolerância dessas bactérias ao cloreto de benzalcônio. MÉTODOS: Foram adquiridas aleatoriamente no comércio da região metropolitana de São Paulo, SP, Brasil, 52 amostras de desinfetantes de uso domiciliar para análise quanto à presença de bactérias contaminantes. O nível de tolerância dessas bactérias ao cloreto de benzalcônio foi determinado pelo método da macrodiluição em caldo. RESULTADOS: De 52 amostras, 16 (30,77%) estavam contaminadas por bactérias Gram negativas, com contagens variando entre 10(4) e 10(6) UFC/ml. Esses contaminantes foram identificados como Alcaligenes xylosoxidans, Burkholderia cepacia e Serratia marcescens. As Concentrações Inibitórias Mínimas (CIM: mg/ml) do cloreto de benzalcônio para S. marcescens, A. xylosoxidans e B. cepacia foram: 2,48, 1,23 e 0,30, respectivamente. CONCLUSÕES Os desinfetantes de uso domiciliar à base de compostos de amônio quaternário são passíveis de contaminação por bactérias. As CIM do cloreto de benzalcônio para as bactérias contaminantes estavam abaixo das concentrações do princípio ativo presente nos desinfetantes, indicando que a tolerância ao biocida não é estável, podendo ser perdida com o cultivo das bactérias em meios de cultura sem o biocida.OBJECTIVE: To evaluate disinfectants for domestic use for the presence of bacteria, identify them, and determine their tolerance level to benzalkonium chloride. METHODS: Fifty-two samples of commercially available disinfectants for domestic use were acquired at random in the metropolitan area of São Paulo, Brazil, and analyzed to detect the presence of bacterial contaminants. The isolated organisms were identified and their tolerance level to benzalkonium chloride was determined by broth macrodilution method. RESULTS: Sixteen (30.77%) of fifty-two disinfectants sampled were contaminated by Gram-negative bacteria, with counts varying between 10(4) and 10(6) UFC/ml. Alcaligenes xylosoxidans, Burkholderia cepacia and Serratia marcescens were the predominant organisms found. The minimum inhibitory concentration (MIC: mg/ml) of benzalkonium chloride for these bacteria were 2.48, 1.23 and 0.30 to S. marcescens, A. xylosoxidans and B. cepacia, respectively. CONCLUSIONS: The disinfectant formulation containing quaternary ammonium compounds (QACs) may be exposed to contamination by Gram-negative bacteria. The MICs of benzalkonium chloride against the isolated bacteria were low, indicating that the bacteria grown in culture media without QACs lost their tolerance to this biocide.
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- 2000
- Full Text
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3. Crise du coronavirus et confinement : des situations à risque d'intoxication rapidement identifiées
- Author
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Sinno-Tellier, Sandra, Direction des alertes et des vigilances sanitaires (DAVS), and Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)
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Centres antipoison ,[SDV]Life Sciences [q-bio] ,[SDV.TOX]Life Sciences [q-bio]/Toxicology ,COVID-19 ,[SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie ,Désinfectants ,Solutions hydro-alcooliques - Abstract
International audience; La crise du coronavirus et le confinement ont révélé, au travers du suivi des cas enregistrés par les Centres anti-poison (CAP), des situations à risque d'intoxication : ainsi les appels pour des effets indésirables liés à l'utilisation de produits nettoyants et désinfectants ménagers, aux solutions hydro-alcooliques et aux huiles essentielles ont été plus nombreux. L'Anses et les CAP ont rapidement alerté les pouvoirs publics afin de diffuser des recommandations adaptées à chacune des situations identifiées. Ces recommandations pourront être rappelées en cas de nouvel épisode de pandémie.
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- 2020
4. Allergènes en chirurgie bucco-dentaire.
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Kissi, Lamia and Yahya, Ihsane Ben
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DENTISTRY , *LATEX allergy , *ALLERGIES , *LATEX , *ALLERGENS , *DISINFECTION & disinfectants - Abstract
In dentistry, the dentist, the staff and the patients are increasingly confronted with the phenomenon of allergy and intolerance. These are common and their prevalence tends to increase because such diversity and multiplication of allergenic products that are handled. The allergens involved are unfortunately poorly documented. Among these allergens, latex is the most frequently reported in the literature and can cause allergic reactions with a prevalence ranging from 2.8% to 16.9% among health professionals. It would be responsible for skin and respiratory allergies increasingly common. It has become a concern for allergists hence the interest in defining allergens, triggering factors, pathogenicity and its different clinical expressions. Denture materials handled by the dentist and dental technician, especially acrylic and some impression materials, and metals (nickel, cobalt, chromium, gold) have also been incriminate in the occurrence of allergic reactions. Titanium, metal with biocompatible properties, has been studied extensively in recent years, showing its role in causing allergic reactions in some patients. Rarely, antiseptics used preoperatively as well as some disinfectants have been reported as being responsible for intolerance or contact sensitization. Finally, local anesthetics were often wrongly referred to as allergens. Allergic reactions can be trivial to type of mucosal erythema in patients, type of urticaria or eczema in the practitioner and his staff but may have other clinical forms such as angioedema for latex or unexplained implant failures. The difficulty lies in establishing the etiologic diagnosis in the occurrence of allergic accidents. The medical history has its importance and the close collaboration between the dentist and the allergist to identify patients at risk but also to implement all the means of prevention. [ABSTRACT FROM AUTHOR]
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- 2012
- Full Text
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5. In vitro antimicrobial susceptibility of Prototheca spp. isolated from bovine mastitis in a Portugal dairy herd.
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Lopes, M.M., Ribeiro, R., Carvalho, D., and Freitas, G.
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MICROBIAL sensitivity tests ,TOXIC algae ,DAIRY cattle ,LIVESTOCK diseases ,BOVINE mastitis ,ANTIBACTERIAL agents ,DISINFECTION & disinfectants - Abstract
Copyright of Journal of Medical Mycology / Journal de Mycologie Médicale is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2008
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6. Reducing diarrhoea in Guatemalan children: randomized controlled trial of flocculant-disinfectant for drinking-water.
- Author
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Chiller, Tom M., Mendoza, Carlos E., Lopez, M. Beatriz, Alvarez, Maricruz, Hoekstra, Robert M., Keswick, Bruce H., and Luby, Stephen P.
- Subjects
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DIARRHEA in children , *INTESTINAL diseases , *FLOCCULANTS , *CLINICAL trials , *DIARRHEA , *DISINFECTION & disinfectants , *SEWAGE purification , *WATER utilities , *MORTALITY - Abstract
Objective To examine the effect of a new point-of-use treatment for drinking-water, a commercially developed flocculant-disinfectant, on the prevalence of diarrhoea in children. Method We conducted a randomized controlled trial among 514 rural Guatemalan households, divided into 42 neighbourhood clusters, for 13 weeks, from 4 November 2002 through 31 January 2003. Clusters assigned to water treatment with the flocculant-disinfectant were compared with those using their usual water-handling practices. The longitudinal prevalence of diarrhoea was calculated as the proportion of total days with diarrhoea divided by the total number of days of observation. The prevalence of diarrhoea was compared using the Wilcoxon rank-sum test. Findings the 1702 people in households receiving the disinfectant had a prevalence of diarrhoea that was 40% lower than that among the 1699 people using standard water-handling practices (0.9% versus 1.5%; P = 0.001). In households using the flocculant-disinfectant, children < 1 years of age had a 39% lower prevalence of diarrhoea than those in households using their standard practices (3.7% versus 6.0%; p=0.005). Conclusion In setting where families rarely treat drinking-water, we introduced a novel flocculant-disinfectant that reduced the longitudinal prevalence of diarrhoea, especially among children aged < 1 yeas, among whom diarrhoea has been strongly associated with mortality. Successful introduction and use of this product could contribute to preventing diarrhoeal disease globally. [ABSTRACT FROM AUTHOR]
- Published
- 2006
7. Dermatoses professionnelles en milieu hospitalier
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Barbaud, A.
- Subjects
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SKIN inflammation , *ALLERGIES , *URTICARIA , *ECZEMA - Abstract
Abstract: Occupational dermatitis (irritant dermatitis, contact urticaria and contact eczema) is frequent among healthcare workers. Irritant hand dermatitis, the most common occupational dermatitis, occurs often in individual who work in a humid environment, who handle disinfectants, and who are required to wash their hands frequently; atopic dermatitis is a risk factor for this condition. Natural rubber latex present in rubber gloves is the most common cause of contact urticaria. Contact eczema can be induced by rubber accelerators (for example, thiurams) present in gloves, and also by disinfectants (glutaraldehyde, dodecyldimethylammonium), disinfectants and detergents, hand creams, acrylates (in dentists), and echography gels. Nurses sometimes develop contact dermatitis to drugs they handle; these allergies should be diagnosed by appropriate skin testing because sensitized individuals may develop a severe, generalized cutaneous adverse reaction if they are subsequently exposed systemically to the sensitizing drug. [Copyright &y& Elsevier]
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- 2005
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8. Étude comparative de différents systèmes d'optimisation des solutions d'irrigation canalaire
- Author
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Berbé, Ludivine, Université de Lorraine (UL), Université de Lorraine, Rémy Balthazard, and Eric Mortier
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Liquides d'irrigation endocanalaire ,Dissertation universitaire ,[SDV]Life Sciences [q-bio] ,Endodontie ,Désinfection ,Thèse d'exercice en chirurgie dentaire ,Désinfectants - Abstract
La réussite du traitement endodontique dépend principalement de la décontamination du réseau canalaire. De nombreuses études ont comparé l'efficacité des solutions d'irrigation et des différents systèmes d'activation. L'objectif de ce travail est de définir quel(s) système(s) privilégier afin d'optimiser le nettoyage canalaire et l'élimination des bactéries. Les différentes solutions d'irrigation et leurs propriétés sont présentées avant de décrire les différents moyens d'optimisation disponibles, leurs intérêts, avantages et inconvénients. La séquence d'irrigation optimale est ensuite détaillée et la problématique de la standardisation des études abordée. Enfin, un protocole d'étude comparative s'agissant de la capacité de différents dispositifs d'optimisation à propulser les solutions d'irrigation au sein de canaux latéraux et secondaires est proposé.
- Published
- 2019
9. Development of a hand sanitizer with moisturizing properties for medical use
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Espada Santana, Roger and Gutiérrez González, José María, 1953
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Bachelor's thesis ,Control de processos ,Bachelor's theses ,Process control ,Desinfectants ,Treballs de fi de grau ,Disinfectants - Abstract
Treballs Finals de Grau d'Enginyeria Química, Facultat de Química, Universitat de Barcelona, Curs: 2017-2018, Tutor: Jose Maria Gutiérrez González, In this work, the development of a hand sanitizer with moisturizing properties for medical use has been carried out. Formulated product development is the process through which society and or consumer needs are identified and transformed into commercial products. This process can be divided in five main stages: identification of consumer needs, product conceptualization, quality criteria, product formulation and design of a manufacturing process. The product being developed in this work responds to the need of medical staff to dispose of a hand sanitizer that combines maximum biocidal efficacy with superior moisturizing properties to minimize and or eliminate the skin compatibility issues of traditional formulations when used intensively in the context of nosocomial infection prevention. To fulfill the previously identified need, the product has been conceptualized both specifying its microstructure and the delivery agent for the active ingredients of the product. The quality criteria of a formulated product are the requirements that must be met to ensure that apart from satisfying the identified need, the product differentiates from its competition and is attractive and convincing to the end consumer. The four main quality criteria for the product being developed are: biocidal efficacy, moisturizing capabilities, emulsion stability and product rheology. To allow the evaluation of said quality criteria, appropriate quality indexes have been discussed and in combination with an extensive research of market trends and existing hand sanitizer and moisturizer formulations a genuine and original formulation for the product has been proposed. Finally, in the design of a manufacturing process stage, a process flowsheet indicating all the necessary unit operations and their order has been confectioned and the main equipment units have been selected and briefly analyzed.
- Published
- 2018
10. Repro-toxicité : évaluation de l’impact de produits de bionettoyage sur les spermatozoïdes humains et développement d’un test in vitro, indicateur de repro-toxicité environnementale au laboratoire d’AMP
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Monnin, Nicolas, Université de Lorraine (UL), Université de Lorraine, and Isabelle Koscinski
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Dissertations universitaires ,Procréation médicalement assistée ,Toxicologie de la reproduction ,toxicité ,Thèse d'exercice de pharmacie ,Non disponible/Not available ,Désinfectants ,Détergents ,[SDV.SP]Life Sciences [q-bio]/Pharmaceutical sciences ,Tests de toxicité in vitro - Abstract
En Assistance Médicale à la Procréation (AMP), de nombreux progrès ont été réalisés permettant d’améliorer les taux d’implantation embryonnaire et de grossesse. Cependant, le taux d’implantation reste limité dans l’espèce humaine. L’optimisation des conditions de culture est indispensable pour améliorer l’efficacité des processus de Fécondation In Vitro (FIV). En effet, l’embryon in vitro est soumis à des conditions très différentes des conditions in vivo et est ainsi impacté par différents facteurs, sources de stress. La réalisation de tests de repro-toxicité pour vérifier l’innocuité des milieux de culture, consommables et autres dispositifs sur les embryons et gamètes humains semble donc essentielle dans la procédure qualité du laboratoire. Un composé peut impacter l’embryon ou les gamètes de manière indirecte par la libération de Composés Organiques Volatils (COV). Or, les produits de bionettoyage utilisés dans les laboratoires peuvent tout à fait être à l’origine d’un dégagement de COV et les lois françaises indiquent même que ces produits bionettoyants doivent être choisis parmi ceux ne présentant pas de toxicité connue sur les gamètes, les tissus germinaux ou les embryons aux doses employées. À ce jour, la littérature ne rapporte aucune étude visant à évaluer et comparer la repro-toxicité de ces produits biodécontaminants utilisés en laboratoire d’AMP. Un état des lieux des pratiques de bionettoyage dans les laboratoires d’AMP de France a tout d’abord été réalisé à l’aide d’un questionnaire envoyé par mailing-liste à l’ensemble des biologistes français des laboratoires d'étude de la fécondation et de la conservation de l'oeuf. Notre étude expérimentale intitulée BIONETTOX-FIV a eu pour objectif d’étudier la repro-toxicité des deux produits de bionettoyage les plus utilisés en France et compatibles avec une application dans des étuves de laboratoire, à l’aide d’un mode opératoire original basé sur le test de repro-toxicité « Sperm Survival Test » (SpST). Chaque produit bionettoyant a été testé en utilisant 20 prélèvements spermatiques (n=20 par produit bionettoyant). Pour expliciter un potentiel impact indirect des produits de bionettoyage sur les spermatozoïdes, différentes analyses chimiques ont été menées pendant les incubations pour évaluer et caractériser les COV présents dans les différentes étuves mimant différentes conditions d’incubation (exagérée avec atmosphère saturée en produit ou normale, telle que recommandée par le fournisseur). Les résultats du test SpST ne montrent aucun impact sur la mobilité spermatique des deux produits bionettoyants étudiés et ceci quelle que soit la condition d’incubation. Les analyses chimiques montrent un dégagement de COV spécifique en fonction du produit, mais en faible quantité. Il faut toutefois rester prudent car rien ne prouve ici une innocuité complète d’utilisation de ces produits bionettoyants sur le développement embryonnaire humain etd’autres expérimentations complémentaires doivent être envisagées dans le futur.
- Published
- 2017
11. Abheilungsverzögerungen von Hornhautepithelläsionen durch Augentropfen (und Augensalben)
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Ehrich, W., Naumann, Gottfried O. H., and Gloor, Balder R. P.
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- 1980
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12. Inactivation of dairy bacteriophages by commercial sanitizers and disinfectants
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Duchaine, Caroline, Moineau, Sylvain, Labrie, Simon, Campagna, Céline, Villion, Manuela, Duchaine, Caroline, Moineau, Sylvain, Labrie, Simon, Campagna, Céline, and Villion, Manuela
- Abstract
Many commercial sanitizers and disinfectants have been used over the years to control microbial contamination but their efficacy on phages is often unknown. Here, 23 commercial chemical products, including 21 food-grade sanitizers were tested against virulent dairy phages. These food-grade chemicals included oxidizing agents, halogenated agents, alcohols, quaternary ammonium compounds, anionic acids, iodine-based acids, and an amphoteric chemical. Phage P008 was first exposed to each sanitizer for 2 and 15 min at room temperature and at two different concentrations, namely the lowest and highest no-rinse sanitizing concentrations. Organic matter (whey or milk) was also added to the testing solutions. At the end of the exposure period, the test solution was neutralized and the number of infectious phages was determined by plaque assays. The five most efficient sanitizers against phage P008 (< 4 log of inactivation) were then tested against virulent lactococcal phages P008, CB13, AF6, P1532 of the 936 group, P001 (c2), Q54, and 1358 as well as Lactobacillus plantarum phage B1 and Streptococcus thermophilus phage 2972 using the same protocol. The oxidizing agents and the quaternary ammonium compounds were the most efficient against all phages although phages CB13 and P1532 were less sensitive to these chemicals than the other phages. This study may help in the selection of appropriate chemicals for controlling phage contamination in industrial factories and research laboratories.
- Published
- 2016
13. Avaliação da contaminação bacteriana em desinfetantes de uso domiciliar
- Author
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Jorge Timenetsky, Flávio Alterthum, and Fumie Miyagi
- Subjects
Drug resistence, microbial ,benzalkonium compounds ,Burkholderia cepacia/efeito drogas ,Burkholderia cepacia ,Microbial contamination ,Microbiology ,contamination ,Contamination ,alcaligenes xylosoxidans ,Serratia marcescens ,Resistência microbiana a drogas ,Alcaligenes xylosoxidans ,Compostos de benzalcônio/farmacologia ,Desinfetantes ,serratia marcescens ,biology ,burkholderia cepacia ,Chemistry ,lcsh:Public aspects of medicine ,Public Health, Environmental and Occupational Health ,Alcaligenes xylosoxidans/efeito drogas ,Compostos de benzalcônio ,lcsh:RA1-1270 ,biology.organism_classification ,Benzalkonium compounds ,Contaminação ,drug resistence, microbial ,Desinfectants ,Serratia marcescens/efeito drogas ,desinfectants ,Desinfetantes/análise - Abstract
OBJETIVO: Avaliar desinfetantes de uso domiciliar, identificando a presença de bactérias contaminantes, e conhecer o nível de tolerância dessas bactérias ao cloreto de benzalcônio. MÉTODOS: Foram adquiridas aleatoriamente no comércio da região metropolitana de São Paulo, SP, Brasil, 52 amostras de desinfetantes de uso domiciliar para análise quanto à presença de bactérias contaminantes. O nível de tolerância dessas bactérias ao cloreto de benzalcônio foi determinado pelo método da macrodiluição em caldo. RESULTADOS: De 52 amostras, 16 (30,77%) estavam contaminadas por bactérias Gram negativas, com contagens variando entre 10(4) e 10(6) UFC/ml. Esses contaminantes foram identificados como Alcaligenes xylosoxidans, Burkholderia cepacia e Serratia marcescens. As Concentrações Inibitórias Mínimas (CIM: mg/ml) do cloreto de benzalcônio para S. marcescens, A. xylosoxidans e B. cepacia foram: 2,48, 1,23 e 0,30, respectivamente. CONCLUSÕES Os desinfetantes de uso domiciliar à base de compostos de amônio quaternário são passíveis de contaminação por bactérias. As CIM do cloreto de benzalcônio para as bactérias contaminantes estavam abaixo das concentrações do princípio ativo presente nos desinfetantes, indicando que a tolerância ao biocida não é estável, podendo ser perdida com o cultivo das bactérias em meios de cultura sem o biocida. OBJECTIVE: To evaluate disinfectants for domestic use for the presence of bacteria, identify them, and determine their tolerance level to benzalkonium chloride. METHODS: Fifty-two samples of commercially available disinfectants for domestic use were acquired at random in the metropolitan area of São Paulo, Brazil, and analyzed to detect the presence of bacterial contaminants. The isolated organisms were identified and their tolerance level to benzalkonium chloride was determined by broth macrodilution method. RESULTS: Sixteen (30.77%) of fifty-two disinfectants sampled were contaminated by Gram-negative bacteria, with counts varying between 10(4) and 10(6) UFC/ml. Alcaligenes xylosoxidans, Burkholderia cepacia and Serratia marcescens were the predominant organisms found. The minimum inhibitory concentration (MIC: mg/ml) of benzalkonium chloride for these bacteria were 2.48, 1.23 and 0.30 to S. marcescens, A. xylosoxidans and B. cepacia, respectively. CONCLUSIONS: The disinfectant formulation containing quaternary ammonium compounds (QACs) may be exposed to contamination by Gram-negative bacteria. The MICs of benzalkonium chloride against the isolated bacteria were low, indicating that the bacteria grown in culture media without QACs lost their tolerance to this biocide.
- Published
- 2000
14. Avaliação da contaminação bacteriana em desinfetantes de uso domiciliar
- Author
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Fumie Miyagi, Jorge Timenetsky, and Flávio Alterthum
- Subjects
desinfectants ,benzalkonium compounds ,burkholderia cepacia ,alcaligenes xylosoxidans ,serratia marcescens ,contamination ,drug resistence, microbial ,Public aspects of medicine ,RA1-1270 - Abstract
OBJETIVO: Avaliar desinfetantes de uso domiciliar, identificando a presença de bactérias contaminantes, e conhecer o nível de tolerância dessas bactérias ao cloreto de benzalcônio. MÉTODOS: Foram adquiridas aleatoriamente no comércio da região metropolitana de São Paulo, SP, Brasil, 52 amostras de desinfetantes de uso domiciliar para análise quanto à presença de bactérias contaminantes. O nível de tolerância dessas bactérias ao cloreto de benzalcônio foi determinado pelo método da macrodiluição em caldo. RESULTADOS: De 52 amostras, 16 (30,77%) estavam contaminadas por bactérias Gram negativas, com contagens variando entre 10(4) e 10(6) UFC/ml. Esses contaminantes foram identificados como Alcaligenes xylosoxidans, Burkholderia cepacia e Serratia marcescens. As Concentrações Inibitórias Mínimas (CIM: mg/ml) do cloreto de benzalcônio para S. marcescens, A. xylosoxidans e B. cepacia foram: 2,48, 1,23 e 0,30, respectivamente. CONCLUSÕES Os desinfetantes de uso domiciliar à base de compostos de amônio quaternário são passíveis de contaminação por bactérias. As CIM do cloreto de benzalcônio para as bactérias contaminantes estavam abaixo das concentrações do princípio ativo presente nos desinfetantes, indicando que a tolerância ao biocida não é estável, podendo ser perdida com o cultivo das bactérias em meios de cultura sem o biocida.
15. L'intérêt des produits hydro-alcooliques en milieu hospitalier, collectivité et milieu individuel et familial
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Travkine, Marie, Université de Lorraine (UL), Université de Lorraine, and Jean-Marie Baradel
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Hôpitaux-Hygiène ,Infections nosocomiales ,Thèse d'exercice de pharmacie ,Désinfectants ,Non disponible / Not available ,[SDV.SP]Life Sciences [q-bio]/Pharmaceutical sciences - Abstract
L'hygiène des mains a une place prépondérante dans la lutte contre la transmission de nombreuses maladies tant en milieu hospitalier, qu'en collectivité ou encore en milieu familial.De nos jours et selon les recommandations de plusieurs grandes institutions, le lavage traditionnel des mains à l'eau et au savon se voit remplacé par la technique de friction avec des produits hydro-alcooliques ou PHA. Leur efficacité n'est plus à démontrer mais dépend cependant de facteurs qu'il faut connaître et maîtriser.A l'hôpital, ces PHA permettent de diminuer significativement l'incidence des infections nosocomiales en augmentant l'observance de l'hygiène des mains. La formation du personnel médical et paramédical à la frictionhydro-alcoolique a une importance non négligeable sur la diminution du nombre de germes de la flore cutanée et s'avère donc plus que nécessaire.L'utilisation de ces produits est également indiquée en collectivité et en milieu individuel et familial pour limiter la contamination manu-portée en période d'épidémie de gastroentérite ou de grippe par exemple.Notre étude, réalisée auprès de pharmaciens d'officine de Lorraine, permet de constater une hausse considérable de la vente de PHA lors de la pandémie de grippe H1N1 de l'hiver 2009-2010 puis une diminution dès la levéede l'alerte. Cette enquête résume également les conseils donnés lors de la délivrance de produits hydroalcooliques pour une utilisation optimale du produit par le patient et permet de mettre en avant un des rôles importants du pharmacien qu'est le conseil officinal.
- Published
- 2012
16. Formación de biopelículas y resistencia a desinfectantes en cepas de salmonella aisladas de nopal verdura y muestras de agua y suelo de uso agrícola
- Author
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Santos Villamil, Alfricia Adriana de los
- Subjects
Desinfectantes ,Maestría ,Biopelículas ,Salmonella ,Biofilms ,Fitopatología ,Desinfectants ,Nopal - Abstract
La presencia de Salmonella en nopal verdura fresco (Opuntia ficus-indica L.) MILL se ha documentado recientemente (Hernández et al., 2009). La contaminación de alimentos es un problema de salud pública que afecta a las personas en todo el mundo. Una característica importante de Salmonella es su capacidad para formar biopelículas, las cuales son comunidades de células microbianas embebidas en una matriz de exopolímeros que ellas mismas producen en respuesta a factores como la temperatura, la humedad relativa y la composición del medio en que se encuentran (Annous et al., 2005; Stepanovic et al., 2000). Esta capacidad le permite a Salmonella adherirse de manera irreversible y de colonizar superficies bióticas y abióticas (Annous et al., 2005, Stepanovic et al., 2004) así como la de resistir tratamientos con antimicrobianos (antibióticos, desinfectantes y germinicidas) (Annous et al, 2005; Joseph et al., 2001). Las biopeliculas formadas por Salmonella pueden convertirse en focos importantes de contaminación en la producción de alimentos inocuos, difíciles de remover durante los procedimientos normales de limpieza. Por lo anterior los objetivos del estudio fueron 1) determinar la capacidad de cepas de Salmonella, aisladas de nopal verdura (10 cepas), muestras de agua (2 cepas) y suelo (3 cepas), para formar biopelículas y 2) evaluar el efecto bactericida de los desinfectantes ácido cítrico, ácido láctico e hipoclorito de sodio en la viabilidad de cepas formadoras de biopelículas. Se utilizó el método de O´Toole y Kolter (1998) y placas de poliestireno (Coster®) con medio esencial mínimo con glucosa (MEM) y se determinó la densidad óptica (D.O) para determinar la producción de biopelículas. Los desinfectantes se aplicaron a placas con formación de biopelículas en MEM simple de 48 h a 37°C. Todas las cepas registraron producción de biopelículas desde las 24 h aunque se obtuvieron diferencias (Tukey α=0.05), dependiendo del tiempo de incubación con respecto a los valores de D.O. Las cepas de suelo expresaron su capacidad más rápidamente que las de agua y nopal. El hipoclorito de sodio (200 ppm) y el ácido láctico (1.5 X 10-4) inhibieron el crecimiento de células cuando se aplicaron por 20 min sobre las biopelículas. Los resultados aquí obtenidos evidencian la importancia de la implementación de Buenas Prácticas Agrícolas en la producción de nopal como estrategia para prevenir la contaminación por cepas de Salmonella formadoras de biopelículas in vivo donde el efecto de los tratamientos con satizantes pudiera variar. _______________ BIOFILM FORMATION AND DISINFECTANT RESISTANCE IN SALMONELLA STRAINS ISOLATED FROM FRESH NOPAL AND WATER AND SOIL SAMPLES FOR AGRICULTURAL USES. ABSTRACT: The presence of Salmonella in fresh nopal (Opuntia ficus-indica L.) MILL has been recently documented (Hernández et al., 2009). Food contamination is a public health problem that affects people worldwide. An important characteristic of Salmonella is its capability of forming biofilms, which are communities of microbial cells embedded in an exopolymer matrix they themselves produce in response to factors such as temperature, relative humidity and the composition of the environment they are found in (1, 6). This capability helps Salmonella adhere irreversibly and colonize biotic and abiotic surfaces (Annous et al., 2005; Stepanovic et al., 2000) as well as resisting treatments with antimicrobials (antibiotics, disinfectant and germicides) (Annous et al., 2005, Stepanovic et al., 2004). The biofilms formed by Salmonella can become important sources of pollution in food production, difficult to remove during normal cleaning procedures. Because of this, the goals of this study were 1) to determine the ability of Salmonella strains, isolated from nopal (10 strains), water samples (2 strains), and soil (3 strains) to form biofilms, and 2) to evaluate the bactericidal effect of the disinfectants citric acid, lactic acid, and sodium hypochlorite on the viability of biofilm producing strains. The O’toole and Kolter (1998) method was used with polystyrene plates (Coster™) and a minimum essential medium (MEM). The optic density (OD) was determined to determine biofilm production. The disinfectants were applied to the plates with a formation of biofilm in a simple MEM at 48h, at 37 ºC. All the strains showed biofilm production at 24 h, although there were differences (Tukey α=0.05) depending on the incubation time with regard to OD values. The strains from the soil showed biofilm faster than did those from nopal or water. Sodium hypochlorite (200 ppm) and lactic acid (1.5 X 10-4) inhibited cell growth when applied for 20 min on the biofilms. The results obtained point out the importance of implementing Good Agricultural Practices in the production of nopal as a strategy to prevent contamination by Salmonella strains that produce biofilms in vivo, where the effect of treatments with sanitizers may vary.
- Published
- 2010
17. Inactivation of dairy bacteriophages by commercial sanitizers and disinfectants
- Author
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Campagna, Céline, Villion, Manuela, Labrie, Simon, Duchaine, Caroline, Moineau, Sylvain, Campagna, Céline, Villion, Manuela, Labrie, Simon, Duchaine, Caroline, and Moineau, Sylvain
- Abstract
Many commercial sanitizers and disinfectants have been used over the years to control microbial contamination but their efficacy on phages is often unknown. Here, 23 commercial chemical products, including 21 food-grade sanitizers were tested against virulent dairy phages. These food-grade chemicals included oxidizing agents, halogenated agents, alcohols, quaternary ammonium compounds, anionic acids, iodine-based acids, and an amphoteric chemical. Phage P008 was first exposed to each sanitizer for 2 and 15 min at room temperature and at two different concentrations, namely the lowest and highest no-rinse sanitizing concentrations. Organic matter (whey or milk) was also added to the testing solutions. At the end of the exposure period, the test solution was neutralized and the number of infectious phages was determined by plaque assays. The five most efficient sanitizers against phage P008 (b4 log of inactivation) were then tested against virulent lactococcal phages P008, CB13, AF6, P1532 of the 936 group, P001 (c2), Q54, and 1358 as well as Lactobacillus plantarum phage B1 and Streptococcus thermophilus phage 2972 using the same protocol. The oxidizing agents and the quaternary ammonium compounds were the most efficient against all phages although phages CB13 and P1532 were less sensitive to these chemicals than the other phages. This study may help in the selection of appropriate chemicals for controlling phage contamination in industrial factories and research laboratories
- Published
- 2013
18. 'In vitro' comparative experimental study of antimicrobial action of mouth washing products
- Author
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Ruiz Martínez, Lidia, Escribano Patón, César, Veiga Crespo, Patricia, Villa, Tomás G., Vinuesa Aumedes, Teresa, and Universitat de Barcelona
- Subjects
Agents antiinfecciosos ,Oral hygiene ,Anti-infective agents ,Desinfectants ,Dentifricis ,Higiene dental ,Higiene bucal ,Dental hygiene ,Dentifrices ,Disinfectants - Abstract
Regular use of mouth rinses modifies the oral habitat, since bacterial populations are submitted to a high selective pressure during the treatment exercised by the active presence of the disinfectant. Mostly mouth rinses are based on the antibacterial effect of Chlorhexidine, Triclosan, essential oils and other antibacterials although other pharmaceutical characteristics can also affect their effectiveness. In this paper we compare “in vitro” the antibacterial effect of different oral rinsing solutions. Minimal Inhibitory Concentrations (MIC) and Minimal Bactericidal Concentrations (MBC) were determined as well as the kinetics of bacterial death in the presence of letal concentrations of the mouth rinses. MIC values expressed as Maximal Inhibitory Dilution (MID) of the mouth rinse ranged from 1 to 1/2048 depending on the microorganism and product, whereas Minimal Biocidal Concentration (MBC), expressed as Maximal Biocidal Dilution (MBD) ranged from 1 to 1/1024, being in general one dilution less than MIC. Maximal Biocidal Dilution is a good tool to measure the actual efficiency of mouth washing solutions. However, kinetics of death seems to be better in our work killing curves demonstrate that bacterial populations are mostly eliminated during the first minute after the contact of bacterial suspension and the mouth-washing solution. In all tested bacterial species mouth-washing solutions tested were able to reduce until suspension treated except 1 and 5.
- Published
- 2008
19. Évaluation des risques écotoxicologiques liés aux rejets d'effluents hospitaliers dans les milieux aquatiques. Contribution à l'amélioration de la phase « caractérisation des effets »
- Author
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Boillot, Clotilde, Laboratoire des Sciences de l'Environnement (LSE-ENTPE), École Nationale des Travaux Publics de l'État (ENTPE)-Université de Lyon-Ministère de l'Ecologie, du Développement Durable, des Transports et du Logement, INSA de Lyon, Yves Perrodin(perrodin@entpe.fr), and Boillot, Clotilde
- Subjects
périphyton ,ecotoxicological risk ,risque écotoxicologique ,[OTHER] domain_other ,effluent hospitalier ,hospital wastewater ,désinfectants ,disinfectants ,bioassays ,bioessais ,[OTHER]domain_other ,surfactants - Abstract
This study deals with the ecotoxicological risk assessment (EDREcotox) related to hospital wastewater discharging into aquatic environments. The first objective was to improve the knowledge of the ecotoxicological effects of hospital wastewater. Firstly, the combined effects of the main pollutants contained in these effluents were characterized on Daphnia magna. Then, the effluents of a hospital coming from a French large city were studied by integrating their in-depth physicochemical and ecotoxicological characterizations. EDREcotox based on various approaches, substances, substances with combined effects, mono-specific and pluri-specific bioassays, was then carried out. The second objective of this work was to contribute to the improvement of “characterization of ecotoxicological effects” methodologies from a general point of view and for a specific scenario studied: “discharging of hospital effluents from a large city of the South-east of France in the urban sewer network towards the wastewater treatment plant and then towards the river”. Results lead to the conclusion that the combined effects of the studied disinfectants/surfactants mixtures on the mobility of D. magna are additive. Whatever the approach used, our findings reveal the toxicity of the studied effluents. However EDREcotox show that in the case of our scenario, the ecotoxicological risk is weak for the river aquatic organisms. Our results also lead to propose a methodology of characterization of ecotoxicological effects starting with an integrated approach. Finally, this work contributes to establish recommendations for an improved management of hospital effluents., Ce mémoire de thèse s'inscrit dans la problématique de l'Evaluation Des Risques Ecotoxicologiques (EDREcotox) liés aux rejets d'effluents hospitaliers dans les milieux aquatiques. Le premier objectif vise à améliorer la connaissance des effets écotoxicologiques des effluents hospitaliers. Pour cela, nous avons étudié d'une part, les effets combinés des principaux polluants contenus dans ces effluents vis-à-vis de Daphnia magna et, d'autre part, les effluents provenant d'un hôpital d'une grande ville française, en intégrant leur caractérisation physico-chimique et écotoxicologique approfondie. Nous avons alors mis en œuvre des EDREcotox basées sur les différentes approches préalablement étudiées (substances, substances avec effets combinés, bioessais mono-spécifiques et pluri-spécifiques). Le second objectif de ce travail vise à contribuer à l'amélioration des méthodologies de caractérisation des effets écotoxicologiques, à la fois d'un point de vue général et pour le scénario spécifique étudié : « rejets des effluents d'un hôpital d'une grande ville du Sud-Est de la France dans le réseau d'eaux usées en direction de la station d'épuration puis du cours d'eau ». Les résultats obtenus montrent que les effets combinés des mélanges de désinfectants/surfactants étudiés sont additifs vis-à-vis de D. magna. Quelle que soit l'approche utilisée, nos résultats révèlent la toxicité des effluents étudiés. Les EDREcotox montrent cependant que, dans le cas de notre scénario, le risque écotoxicologique est faible pour les organismes du milieu récepteur. Nos recherches ont également permis de proposer une méthodologie de caractérisation des effets écotoxicologiques basée sur une première étape constituée d'une approche intégrée. Enfin, ce travail permet d'aboutir à des recommandations pour une meilleure gestion des effluents hospitaliers.
- Published
- 2008
20. Influence of cleaning/disinfection and poultry slaughtering processes on the antibiotic resistance level in campylobacters
- Author
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Peyrat, Marie-Bénédicte, Chiffoleau, Emmanuelle, Laboratoire d'études et de recherches sur les médicaments vétérinaires et les désinfectants, Agence Française de Sécurité Sanitaire des Aliments (AFSSA), Université Rennes 1, and Pascal Sanders(p.sanders@fougeres.afssa.fr)
- Subjects
[SDV.OT]Life Sciences [q-bio]/Other [q-bio.OT] ,volailles ,[SDV.OT] Life Sciences [q-bio]/Other [q-bio.OT] ,slaughtering ,poultry ,abattoir ,campylobacter ,résistance ,désinfectants ,disinfectants ,antibiotiques ,antibiotics - Abstract
Campylobacter is a common cause of human bacterial enteritis and consumption of poultry products is a major source of human infection. It has been suggested that disinfectants and environmental stress can lead to changes in the nature and scale of antibiotic resistance expressed by bacteria. In order to investigate this hypothesis, sampling of poultry and environment in 4 unrelated slaughterhouses were conducted. Minimal inhibitory concentrations (MIC) against 6 antibiotics and 2 disinfectants were measured for all the isolates collected. Genotype profile of selected isolates collected after cleaning and disinfection and from poultry carcasses was done by PCR-restriction fragment length polymorphism of pfla/gyrA and flaA genes. Our results indicate that campylobacter is able to survive overnight on surfaces of poultry slaughterhouses and that these strains may contaminate carcasses during the slaughter process. Our results also suggest that cleaning and disinfection procedures and shlaughter procces don't lead to increase antibiotic resistance in campylobacter., Les campylobacters sont des bactéries zoonotiques responsables d'entérites chez l'homme. La viande de volaille est considérée comme une source importante de contamination. Il a été suggéré que les désinfectants et les stress subis par les bactéries au cours des procédures de nettoyage et désinfection et des procédés d'abattage des volailles puissent favoriser la sélection de gènes de résistance aux antibiotiques. Afin d'explorer cette hypothèse, des prélèvements dans 4 abattoirs de volailles ont été réalisés au cours de 9 visites. Les niveaux de résistance des campylobacters isolés ont été déterminés par la méthode de dilution en milieu gélosé pour 6 antibiotiques et 2 substances actives entrant dans la composition de désinfectants. Des souches isolées dans l'environnement des abattoirs après nettoyage et désinfection et sur les carcasses de volailles avant l'entrée en salle de ressuage, ont été génotypées avec la technique de PCR-RFLP des gènes pfla/gyrA et flaA. Nos résultats montrent d'une part que les campylobacters sont capables de survivre aux opérations de nettoyage et de désinfection dans les abattoirs de volailles, et que ces souches sont susceptibles de contaminer les carcasses de volailles. D'autre part, nos résultats indiquent que les opérations d'abattage et les procédures de nettoyage et désinfection dans les abattoirs de volailles ne semblent pas favoriser la sélection de souches de campylobacter résistantes aux antibiotiques.
- Published
- 2008
21. Oral pathogens in DUWL's: risk of infection and strategies for their control
- Author
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Ruiz, Neus, Teresa Vinuesa, and Universitat de Barcelona
- Subjects
Contaminació de l'aigua ,Control d'infeccions ,Bacteria ,Water pollution ,Dental instruments and apparatus ,Aparells i instruments odontològics ,Desinfectants ,Infection control ,Bacteris ,Disinfectants - Abstract
Water lines are an important source of potentíal contamination. Every dental unit is equipped with small-bore flexible plastic tubing to bring water to different hand pieces, such as the air/water syringe, the ultrasonic scaler or the high-speed hand piece. Most dental units are connected directly to municipal distribution systems for potable water and chlorinated or not, this water contains diverse...
- Published
- 2008
22. Health and ecotoxicological risk assessment of Hospital wastewater
- Author
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Evens Emmanuel, Université Quisqueya, Insa Lyon, Yves Perrodin, and Emmanuel, Evens
- Subjects
Hospital effluents ,risques écotoxicologiques ,[SDE.IE]Environmental Sciences/Environmental Engineering ,toxicity ,pharmaceuticals ,désinfectants ,[SDE.ES]Environmental Sciences/Environmental and Society ,risques sanitaires ,médicaments ,[SDE.BE] Environmental Sciences/Biodiversity and Ecology ,ecotoxicological risk ,human health risks ,toxicité ,[SDE.ES] Environmental Sciences/Environmental and Society ,[SDE.IE] Environmental Sciences/Environmental Engineering ,[SDE.BE]Environmental Sciences/Biodiversity and Ecology ,disinfectants ,Effluents hospitaliers - Abstract
The chemical substances used in hospitals for care activities and medical research are generally found in the wastewater. Even if the high volume of generated wastewater by these establishments, ensures an important dilution of the pollutants, the discharge of these effluents in the urban sewer network or in the natural environment generates risks for human health, and represents a significant contribution to the general contamination of the environment, and more particularly of the aquatic environments. The most important pollutants present in hospital wastewater pathogenic microorganism organohalogen compounds, such as the AOX (halogenated organic compounds adsorbable on activated carbon), radioisotopes , detergents and pharmaceuticals. The aims of this study was to develop a methodology for human health and ecotoxicological risks’ assessment of hospital wastewater. Two frameworks have been implemented: (i) for human health risk assessment and management evaluation of hospital effluents discharging via septic tanks, into a karstic formation where the water resources are exploited for human drinking. Chemical and microbiological health human risks were quantitatively characterized. These results require to be verified by epidemiological studies. (ii) For ecotoxicological risk assessment and management of the hospital effluents rejected into a wastewater treatment plant, then in the natural aquatic ecosystem. The scenario allows to a semi-quantitative risk characterization. It needs to be improved on some aspects, particularly those linked to long term toxicity assessment on target organisms, Les substances chimiques utilisées dans les hôpitaux pour les activités de soins et pour la recherche médicale sont le plus souvent retrouvées dans les effluents liquides. Même si le volume élevé d’eaux usées généré par ces établissements, assure une dilution importante des polluants présents, le rejet de ces effluents dans le réseau d’assainissement communal ou dans le milieu naturel génère un risque pour la santé humaine, et représente une contribution significative à la contamination générale de l'environnement, et plus particulièrement des milieux aquatiques. Les contaminants les plus fréquemment rencontrés sont des micro-organismes pathogènes, des métaux, des radio isotopes, des détergents, des composés organohalogénés et des résidus de médicaments. L’objectif de ce travail était d’élaborer une méthodologie d’évaluation des risques sanitaires et écotoxicologiques liés au rejet dans les milieux aquatiques des effluents hospitaliers. Deux procédures ont été élaborées : (i) pour la gestion et l’évaluation des risques sanitaires générés par le rejet des effluents hospitalier, via des fosses septiques, dans une formation karstique où les ressources en eau sont exploitées pour la consommation humaine. Des risques chimiques et microbiologiques pour la santé humaine ont été caractérisés quantitativement. Ces résultats nécessitent d’être vérifiés par des études épidémiologiques. (ii) pour la gestion et l’évaluation des risques écotoxicologiques liés aux effluents hospitaliers rejetés dans une STEP puis dans un milieu récepteur aquatique. Le scénario présenté conduit à une évaluation semi-quantitative des risques. Il devra être amélioré sur certains aspects, particulièrement ceux concernant l’évolution de la toxicité à long terme sur les organismes cibles.
- Published
- 2004
23. Desinfección de materiales de impresión: revisión bibliográfica (1986-1995)
- Author
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Quinteros, A., Lozano de Luaces, Vicente, and Costa Codina, Xavier
- Subjects
Disinfection ,Systematic reviews (Medical research) ,Desinfecció ,Desinfectants ,Malalties infeccioses ,Communicable diseases ,Ressenyes sistemàtiques (Investigació mèdica) ,Disinfectants - Abstract
Con esta revisión bibliográfica, los autores pretenden analizar los avances en los métodos de desinfección de los materiales de impresión durante los años 1996 a 1995. Se comentan las normativas internacionales sobre el tema. También se exponen las diferentes modificaciones en los materiales de impresión producidas por los productos empleados para desinfectar, así como la efectividad de los desinfectantes sobre los materiales de impresión. Se comenta el protocolo a seguir en la desinfección de impresiones.
- Published
- 1997
24. Cyclosporine A, an alternative to the oral lichen planus erosive treatment
- Author
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López López, José, 1958, Roselló Llabrés, Xavier, and Universitat de Barcelona
- Subjects
treatment ,Lichens ,bouche ,Ciclosporine A ,lichen plan buccal érosif ,traitement ,pathologie ,Ciclosporina ,Higiene bucal ,Mucosa oral ,Cyclosporine A ,oral ,Lichen Planus Oral erosive ,Oral hygiene ,Cyclosporine ,Desinfectants ,Oral mucosa ,Líquens ,Higiene dental ,Dental hygiene ,Disinfectants - Abstract
We present a double blind study in two groups afflicted with Oral Lichen Planus erythematous of long evolution and resistant to other treatments. We tested on it a treatment with Cyclosporine A (CyA) which had been successfully used before by many dermatologists.In the group A we used mouthwashes with a 5 ml Cyclosporine A solution to a 10% in olive oil of 0.4° of acidity for five minutes, three times a day for eight weeks. In the control group we used acetonide of triamcinolone 0,1% in aqueous solution. Patients in group A improved considerably in their symptomatology in a 90 % against a 60 % in group B. In group A we could appreciate a disappearance of the symptomatology after two weeks of treatment in 60% of patients against 30% in group B.CyA can be an alternative to the conventional treatments in the acute period of lichen planus although it can not be considered as a first option drug because of the high cost of the treatment. For long term, results are not so good and we consider that extensive studies are necessary., Nous présentons une étude en double aveugle qui a porté sur deux groupes de malades porteurs d’un lichen plan buccal de longue évolution et résistant aux traitements classiques. Nous avons essayé un traitement avec la Ciclosporine ® qui avait réussi auparavant chez plusieurs dermatologues.Le groupe A a essayé des rinçages avec 5 ml de solution Ciclosporine A à 10 % dans de l’huile d’olive de 0,4°d’acidité, pendant 5 minutes, 3 fois par jour, pendant 8 semaines. Le groupe de contrôle a utilisé une solution de triamcinolone acetonide à 0,1%. A peu près 90% des malades du groupe étudié ont présenté une considérable amélioration de la symptomatologie, contre seulement 60% pour le groupe B. Après 2 semaines les symptômes ont disparu chez 60% des malades du groupe A, contre seulement 30% des malades du groupe B.La Ciclosporine A peut être une alternative aux traitements conventionnels dans les périodes aigues du lichen plan. Cependant elle ne peut pas être considérée comme une drogue de premier choix étant donné son coût élevé. Pour évaluer les résultats à long terme il sera nécessaire d’entreprendre des études plus étendues.
- Published
- 1995
25. Sur la valeur désinfectante de l'acide sulfureux et sur l'emploi de ce gaz dans la désinfection publique / par M. le Dr A. Calmette,... et M. Ed. Rolants,...
- Author
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Calmette, Albert (1863-1933). Auteur du texte, Rolants, Edmond-Jules (1869-1934). Auteur du texte, Calmette, Albert (1863-1933). Auteur du texte, and Rolants, Edmond-Jules (1869-1934). Auteur du texte
- Abstract
Avec mode texte
- Published
- 1903
26. Traité des désinfectants sous le rapport de l'hygiène publique : leur application à la désinfection de l'air, à l'assainissement des habitations, des hôpitaux, des étables, à la désinfection des plaies, etc. / par M. A. Chevallier,...
- Author
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Chevallier, Alphonse (1793-1879). Auteur du texte and Chevallier, Alphonse (1793-1879). Auteur du texte
- Abstract
Appartient à l’ensemble documentaire : BUOrsay, Contient une table des matières
27. Efetividade da escovação com diferentes agentes de limpeza de próteses na redução da viabilidade de biofilme in vitro da candida albicans
- Author
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Pellízzaro, Delíse [UNESP], Universidade Estadual Paulista (Unesp), and Vergani, Carlos Eduardo [UNESP]
- Subjects
Resinas acrilicas ,Dental plaque ,Toothbrushing ,Desinfetantes ,Stomatitis ,Acrylic resins ,Escovação dentária ,Estomatite dentária ,Candida albicans ,Desinfectants ,Biofilme dentário ,Denture - Abstract
Made available in DSpace on 2014-06-11T19:28:38Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-03-25Bitstream added on 2014-06-13T18:58:04Z : No. of bitstreams: 1 pellizzaro_d_me_arafo.pdf: 501665 bytes, checksum: 45c7da463c0ecbc1bda09d0615a81f92 (MD5) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) A Candida albicans tem sido considerada o principal agente etiológico da estomatite protética, uma das infecções mais comumente observadas em pacientes usuários de próteses removíveis. A adesão de C. albicans à superfície das próteses é o primeiro passo para o desenvolvimento da estomatite protética. Assim, uma adequada higienização das próteses é essencial para prevenir a formação de biofilme microbiano sobre a superfície protética e, conseqüentemente, o início e propagação desta infecção. O objetivo deste estudo foi avaliar a efetividade da escovação com diferentes soluções (água destilada, dentifrício, digluconato de clorexidina a 2%, hipoclorito de sódio a 1% e Polident fresh cleanse®) na redução da viabilidade de um biofilme maduro de C. albicans, desenvolvido sobre uma resina termopolimerizável para base de prótese. Para isso, 90 corpos-de-prova circulares foram confeccionados, esterilizados e inoculados com uma suspensão de 107 células/mL de C. albicans. Para a formação do biofilme, todos os corpos-de-prova foram incubados por 48 h a 37 °C sob agitação. A seguir, os corpos-de-prova foram aleatoriamente divididos (n=9) e individualmente submetidos à escovação ou exposição por 90 s nas diferentes soluções avaliadas. Os espécimes imersos em água destilada pelo mesmo período de tempo foram utilizados como controle positivo. Para verificar a efetividade da escovação e dos agentes de limpeza, os corpos-de-prova foram submetidos à avaliação da atividade metabólica das células não removidas de C. albicans por meio do teste do XTT. Os resultados obtidos foram analisados estatisticamente pelos testes de Mann-Whitney e Kruskal-Wallis (α=0.05). A escovação com todos os agentes de limpeza apresentou redução significativamente superior (p
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