Effect of different activation methods on the intratubular penetration of CaOH2 paste: Ex-vivo analysis by confocal laser scanning microscopy.

The aim of this study was to evaluate the maximum penetration depth (MPD) and penetration area (PA) of CaOH2 paste agitated by different methods and to measure the pH after performing these methods. Fifty-five mandibular premolars were divided into control, GL and 4 experimental groups, GEC, GXP, GEDDY and GI (n = 11), where the paste was agitated with Easy Clean, XP-endo Finisher, EDDY and Irrisonic, respectively. The canals were instrumented and irrigated with NaOCl. The paste was manipulated with propylene glycol and rhodamine B dye. Root sections were examined using confocal laser scanning microscopy. There was no difference between groups regarding PA (p > 0.05). At 5 mm, MPD was greater in GEC than in GL or GEDDY, and greater in GI than in GL (p < 0.05). At 2 mm, MPD was greater in GEC than in the other groups (p < 0.05). In conclusion, both Easy Clean and Irrisonic promoted deeper paste penetration and were associated with higher pH levels.

Resección Ósea Guiada por Fluorescencia en Pacientes con Osteonecrosis Mandibular Asociada a Medicamentos: Scoping Review

RESUMEN: La osteonecrosis mandibular asociada a medicamentos (MRONJ) es una enfermedad grave, pero de baja prevalencia en la cual los márgenes quirúrgicos de la resección ósea son determinados clínicamente por el cirujano basado en parámetros subjetivos. Debido a esto, se ha propuesto la resección ósea guiada por fluorescencia. Describir el conocimiento act ual sobre la resección ósea guiada por fluorescencia en pacientes con MRONJ. Se realizó Scoping Review, buscando en las bases de datos de Pubmed, ScienceDirect y Web of Science, utilizando los operadores booleanos AND y OR. Se aplicaron criterios de inclusión y exclusión. De 66 artículos iniciales, se seleccionaron 13 que cumplieron con los criterios de elegibilidad. Actualm ente se utiliza la técnica de fluorescencia con tetraciclinas (FT) y autofluorescencia (AF), describiéndose un éxito del 85 a 100 % y 7 7,3 a 100 % en un tiempo de seguimiento 1 a 12,9 y 4 a 13,1 meses respectivamente. Hubo 100 % de correlación Clínico-Histopatológica para tejido óseo vital y necrótico. La resección ósea guiada por fluorescencia logra discriminar clínicamente entre tejido óseo vital y necrótico, delimitando los márgenes quirúrgicos de la resección y/o desbridamiento basado en parámetros objetivos y reproducibl es que permiten estandarizar el procedimiento quirúrgico.

ABSTRACT: Medication-related Osteonecrosis of the jaw (MRONJ) is a serious but low prevalence disease in which the surgical margins of bone resection are clinically determinated by the surgeon based on subjetive parameters. Because of this, fluorescence-guided bone resection has been proposed. The objetive of this study is to describe the current knowledge of fluorescence-guided bone resection in patients with MRONJ. Scoping Review was carried out, searching the databases of PubMed, ScienceDirect and Web of Science, using the boolean operator AND and OR. Inclusion and exclusion criteria were applied. Of 66 articles, 13 were selected that met the eligibility criteriaThe technique of fluorescence with tetracyclines (FT) and autofluorescence (AF) is used, describing a success of 85 to 100 % and 77.3 to 100 % in 1 to 12.9 and 4 to 13.1 months respectively. There was 100 % Clinical-Histopathological correlation for vital and necrotic bone tissue. Fluorescence-guided bone resection is able to clinically discriminate between vital and necrotic bone tissue, allowing the delimitation of surgical margins based on objective and reproducible parameters. In addition, it allows to standardize the surgical procedure.

Antibiotic Resistance Decreases the Efficacy of Endodontic Filling Pastes for Root Canal Treatment in Children's Teeth.

The antibacterial efficacy of antimicrobial filling pastes (AFP) used in the root canal treatment of primary teeth has been widely reported. However, antibiotic resistance as an emerging global problem could impact their current efficacy. This study aimed to evaluate the efficacy of two common AFP on susceptible or resistant bacteria isolated from primary necrotic molars. Microbiological samples were obtained and cultured from the root canals of 34 children. In total, 96 colony-forming units were obtained to determine their resistance to tetracycline, rifampicin, and chloramphenicol. They were identified as S. mutans or E. faecalis using polymerase chain reaction. The antimicrobial activity of CTZ paste (chloramphenicol, tetracycline, zinc oxide, and eugenol) and Guedes-Pinto modified (GPM) paste (rifampicin, prednisolone, iodoform, and camphorated paramonochlorophenol) were tested against the identified and selected microorganisms. Larger size inhibition zones were observed in both species when the tested strains were susceptible to the antibiotics in the AFP preparation. The efficacy of AFP containing antibiotics depends on the antibiotic resistance profile of the strain. Antibiotic resistance and its effect on the AFP were shown, which calls into question the use of simplified endodontic techniques that depend on antibiotics, since in these cases these techniques could not clinically eliminate resistant bacteria from the root canal.

"Unscrupulous and Morally Ill-Prepared" Laymen or Professionals? Controlling Pharmacists during the Brazilian Military Dictatorship.

This article traces the transformation of the system of control and repression of Brazilian pharmaceutical activities between the 1930s and the 1970s, through a Foucauldian framework of "differential management of illegalisms." The period between 1930 and 1960 can be understood as a process of negotiation between pharmacists and state agencies that achieved a compromise on the differential management of illegalisms in relation to drugs, with a clear distinction between "laymen" and "professionals." This compromise came into question during the dictatorship, due to institutional transformations that reinforced the autonomy of institutions of repression and a military struggle against subversion and corruption. Pharmacists and laymen alike were considered potential suspects. This suspicion even extended to the civilian agencies that were at the core of the regulation of the licit drug market. These developments profoundly changed the way illegalisms committed by professionals and state officials were treated, blurring the boundaries that had been established between laymen, professionals, inspectors, and industrialists. The final section of the article focuses on the various ways in which institutions of repression focused on pharmacists and state regulatory control agencies as potential places of subversive activity or corruption.

Effects of ketamine in methicillin-resistant Staphylococcus aureus and in silico interaction with sortase A.

Methicillin-resistant Staphylococcus aureus (MRSA) is one of the main human pathogens and is responsible for many diseases, ranging from skin infections to more invasive infections. These infections are dangerous and expensive to treat because these strains are resistant to a large number of conventional antibiotics. Thus, the antibacterial effect of ketamine against MRSA strains, its mechanism of action, and in silico interaction with sortase A were evaluated. The antibacterial effect of ketamine was assessed using the broth microdilution method. Subsequently, the mechanism of action was assessed using flow cytometry and molecular docking assays with sortase A. Our results showed that ketamine has a significant antibacterial activity against MRSA strains in the range of 2.49-3.73 mM. Their mechanism of action involves alterations in membrane integrity and DNA damage, reducing cell viability, and inducing apoptosis. In addition, ketamine had an affinity for S. aureus sortase A. These results indicate that this compound can be used as an alternative to develop new strategies to combat infections caused by MRSA.

A critical review on environmental presence of pharmaceutical drugs tested for the covid-19 treatment.

On March 11, 2020, the World Health Organization (WHO) declared COVID-19 a pandemic. The outbreak caused a worldwide impact, becoming a health threat to the general population and its professionals. To date, there are no specific antiviral treatments or vaccines for the COVID-19 infection, however, some drugs are being clinically tested. The use of these drugs on large scale raises great concern about their imminent environmental risk, since the elimination of these compounds by feces and urine associated with the inefficiency of sewage treatment plants in their removal can result in their persistence in the environment, putting in risk the health of humans and of other species. Thus, the goal of this work was to conduct a review of other studies that evaluated the presence of the drugs chloroquine, hydroxychloroquine, azithromycin, ivermectin, dexamethasone, remdesivir, favipiravir and some HIV antivirals in the environment. The research indicated the presence of these drugs in the environment in different regions, with concentration data that could serve as a basis for further comparative studies following the pandemic.

Medicalização da vida nas práticas vinculadas à estratégia saúde da família / Medicalization of life in practices linked to the family health strategy / La médicalisation de la vie dans les pratiques liées à la stratégie santé de la famille / Medicalización de la vida en prácticas vinculadas a la estrategia de salud de la familia

A inclusão dos cuidados em Saúde Mental na Atenção Primária tem ocorrido em diversos países, incluindo o Brasil, para suprir a existência de uma lacuna assistencial. A integração dos serviços é apontada como necessária, mas ao mesmo tempo um grande desafio. O objetivo deste estudo foi realizar a análise exploratória das práticas discursivas sobre o uso dos medicamentos psicotrópicos e das abordagens não farmacológicas para superação de eventos negativos da vida. As entrevistas realizadas com médicos que trabalham na saúde da família, sobre a prática clínica nos cuidados primários em saúde mental, compuseram o corpus da pesquisa. Os dados foram tratados a partir dos pressupostos da análise do discurso. As descrições analíticas foram construídas a partir dos enunciados identificados na formação discursiva da medicalização da vida. Os resultados da análise evidenciaram o pluralismo terapêutico dos psicotrópicos e seus efeitos, com o uso menos frequente das abordagens não farmacológicas; a prescrição exclui tramas sociais mais amplas, captura a potência da vida modulando os comportamentos individuais e coletivos, para que a convivência seja assegurada e legitimada, para garantir o pretenso bem comum.

Inclusion of mental health care into primary care has occurred in several countries, including Brazil, to tackle the lack of assistance. The integration of services is seen as necessary, but at the same time a major challenge. The aim of this study was to conduct an exploratory analysis of discursive practices on the use of psychotropic drugs and non-pharmacological approaches to overcome negative life events. Interviews conducted with physicians working in family health on the clinical practice of primary mental health care made up our research corpus. Data were analyzed based on the assumptions of discourse analysis. The analytical descriptions were built based on the statements identified in the discursive formation of the medicalization of life. The results of the analysis showed the therapeutic pluralism of psychotropics and their effects, less frequently using non-pharmacological approaches. Prescription excludes broader social plots, captures the power of life by modulating individual and collective behavior, so that social life is assured and legitimized, thus ensuring the alleged common good.

L'inclusion des soins de santé mentale dans l'attention primaire se développe dans divers pays, y compris au Brésil, pour combler l'existence d'une lacune assistancielle. L'intégration des services est considérée comme nécessaire, mais également comme un défi. L'objectif de cette étude a été de réaliser l'analyse exploratoire des pratiques discursives sur l'usage des médicaments psychotropes et des approches non pharmacologiques pour surmonter les événements négatifs de la vie. Les entretiens réalisés avec les médecins travaillant en santé familiale à propos de la pratique clinique dans les soins primaires de santé mentale ont composé le corpus de la recherche. Les résultats de l'analyse ont mis en évidence le pluralisme thérapeutique des psychotropes et leurs effets, avec l'usage moins fréquent des approches non pharmacologiques. La prescription exclut des trames sociales plus amples, capture la puissance de la vie en modulant les comportements individuels et collectifs pour que la vie sociale soit assurée et légitimée, pour garantir le prétendu bien commun.

La inclusión de la atención en salud mental en el ámbito de la atención primaria se ha dado en varios países, entre ellos Brasil, para suplir la existencia de un vacío asistencial. La integración de los servicios se considera como necesaria y, al mismo tiempo, como un gran desafío. El objetivo de este estudio fue realizar un análisis exploratorio de las prácticas discursivas sobre el uso de medicamentos psicotrópicos y sobre los abordajes no farmacológicos para superar los eventos negativos de la vida. Las entrevistas a médicos, que trabajan en salud familiar, sobre la práctica clínica en salud mental dentro de la atención primaria, constituyeron el corpus de la investigación. Los datos fueron tratados a partir de los postulados del análisis del discurso. Las descripciones analíticas se construyeron a partir de las declaraciones identificadas en la formación discursiva de la medicalización de la vida. Los resultados del análisis mostraron el pluralismo terapéutico de los psicotrópicos y sus efectos, con un uso menos frecuente de abordajes no farmacológicos, la prescripción excluye tramas sociales más amplias, capta la potencia de la vida modulando os comportamientos individuales y colectivos, para garantizar y legitimar la coexistencia y garantizar el supuesto bien común.

Repurposing of escitalopram oxalate and clonazepam in combination with ciprofloxacin and sulfamethoxazole-trimethoprim for treatment of multidrug-resistant microorganisms and evaluation of the cleavage capacity of plasmid DNA.

Bacterial resistance has become one of the most serious public health problems, globally, and drug repurposing is being investigated to speed up the identification of effective drugs. The aim of this study was to investigate the repurposing of escitalopram oxalate and clonazepam drugs individually, and in combination with the antibiotics ciprofloxacin and sulfamethoxazole-trimethoprim, to treat multidrug-resistant (MDR) microorganisms and to evaluate the potential chemical nuclease activity. The minimum inhibitory concentration, minimum bactericidal concentration, fractional inhibitory concentration index, and tolerance level were determined for each microorganism tested. In vitro antibacterial activity was evaluated against 47 multidrug-resistant clinical isolates and 11 standard bacterial strains from the American Type Culture Collection. Escitalopram oxalate was mainly active against Gram-positive bacteria, and clonazepam was active against both Gram-positive and Gram-negative bacteria. When associated with the two antibiotics mentioned, they had a significant synergistic effect. Clonazepam cleaved plasmid DNA, and the mechanisms involved were oxidative and hydrolytic. These results indicate the potential for repurposing these non-antibiotic drugs to treat bacterial infections. However, further studies on the mechanism of action of these drugs should be performed to ensure their safe use.

Prescripciones de benzodiacepinas y barbitúricos en Costa Rica 2011-2015 / Benzodiazepines and barbiturates prescriptions in Costa Rica 2011-2015 / Prescriçãode benzodiazepinas e barbitúricos na Costa Rica 2011-2015 / Prescriptions de benzodiazépines et de barbituriques au Costa Rica 2011-2015

Resumen Objetivo Identificar la prescripción de benzodizepinas y barbitúricos psicotrópicos: Clobazam, Tiopental, Clonazepam, Lorazepam, Fenobarbital y Diazepam en la Caja Costarricense del Seguro Social (CCSS) en Costa Rica en el periodo 2011-2015. Materiales y métodos La población estuvo constituida por 1 488 989 prescripciones de psicotrópicos dentro de la CCSS en Costa Rica en el periodo de enero del 2011 a diciembre del 2015. El estudio es de tipo descriptivo retrospectivo. Resultados Del total analizado, casi la mitad (un 47,15%) corresponden a Clonazepam. Le siguen el Lorazepam y el Diazepam con un 22,80% y un 22,53%, respectivamente. Finalmente, Fenobarbital, Clobazam y Tiopental son las menos prescritas con un 7,07%, 0,24% y 0,22% respectivamente. En cuanto a la distribución por sexo las mujeres recibieron el 62,65% de las prescripciones, el restante 37,35% fueron para hombres. Conclusión Existe un aumento exponencial en el consumo de estos fármacos en el quinquenio en estudio. Las personas al final de su ciclo productivo (40 años o más) alcanzan los mayores porcentajes de consumo que luego decrecen alrededor de los 70 años o más; las mujeres son a quienes más se les prescriben este tipo de medicamentos. Por tanto, es necesaria una monitorización continúa que favorezca un uso adecuado de estos fármacos y evite generar potenciales problemas a la salud de la población especialmente a los adultos mayores.

Abstract Objective To identify the prescription of benzodiazepines and psychotropic barbiturates: Clobazam, Thiop ental, Clonazepam, Lorazepam, Phenobarbital and Diazepam at the Costa Rican Social Security Fund (CCSS) in Costa Rica in the period 2011-2015. Materials and methods The population was constituted by 1 488 989 prescriptions of psychotropics within the CCSS in Costa Rica in the period from January 2011 to December 2015. The study is of a retrospective descriptive type. Results Of the total analyzed, almost half (47.15%) corresponded to Clonazepam. It is followed by Lorazepam and Diazepam with 22.80% and 22.53%, respectively. Finally, Phenobarbital, Clobazam and Thiopental are the least prescribed with 7.07%, 0.24% and 0.22% respectively. In terms of gender distribution, women received 62.65% of prescriptions, while the remaining 37.35% were for men. Conclusion There is an exponential increase in the consumption of these drugs in the five-year period under study. People at the end of their productive cycle (40 years or more) reached the highest percentages of consumption, which then fell to around 70 years or more; women were prescribed this type of drug the most. Therefore, continuous monitoring is necessary in order to promote the adequate use of these drugs and avoid generating potential health problems in the population, especially among the elderly.

Resumo Objectivo Identificar a prescrição de benzodiazepinas e barbitúricos psicotrópicos: Clobazam, Thiopental, Clonazepam, Lorazepam, Phenobarbital e Diazepam no Fundo de Seguraba Social da Costa Rica (CCSS), na Costa Rica, no período 2011-2015. Materiais e métodos A população foi constituida por 1 488 989 prescribes de psicotrópicos dentro do CCSS na Costa Rica, no período de Janeiro de 2011 a Dezembro de 2015. O estudo é de tipo descritivo retrospectivo. Resultados Do total analisado, quase metade (47,15%) correspondia ão Clonazepam. Segue-se Lorazepam e Diazepam com 22,80% e 22,53%, respectivamente. Finalmente, Phenobarbital, Clobazam e Thiopental são os menos prescritos com 7,07%, 0,24% e 0,22%, respectivamente. Em termos de distribuição por género, as mulheres receberam 62,65% das receitas, enquanto os restantes 37,35% foram para os homens. Conclusão Verifica-se um aumento exponencial do consumo destes medicamentos no periodo de cinco anos em estudo. As pessoas no final do seu ciclo produtivo (40 anos ou mais) atingiram as percentagens mais elevadas de consumo, que depois diminuíram para cerca de 70 anos ou mais; as mulheres foram as que mais receitaram este tipo de medicamentos. Por conseguinte, é necessário um acompanhamento continuo a fim de promover o uso adequado destes medicamentos e evitar a criação de potenciais problemas de saúde na população, especialmente entre os idosos.

Résumé Objectif Identifier la prescription de benzodiazépines et de barbituriques psychotropes : Clobazam, Thiopental, Clonazepam, Lorazepam, Phenobarbital et Diazepam, dans les établissements de la Caisse Costaricienne de Sécurité Sociale (CCSS), au Costa Rica, durant la période 2011-2015. Matériels et méthodes La population a été constituée de 1 488 989 prescriptions de psychotropes au sein de la CCSS au Costa Rica durant la période de janvier 2011 a décembre 2015. L'étude est de type descriptif rétrospectif. Résultats Sur le total des prescriptions analysées, pres de la moitié (47,15 %) correspondent au Clonazépam. Viennent ensuite le Lorazépam et le Diazépam (22,80 % et 22,53 % respectivement). Enfin, le Phénobarbital, le Clobazam et le Thiopental sont les moins prescrits (7,07%, 0,24% et 0,22% respectivement). En termes de distribution par sexe, les femmes ont reçu 62,65 % des prescriptions, les 37,35 % restants ont été destinés aux hommes. Conclusion On observe une augmentation exponentielle de la consommation de ces substances au cours des cinq années a l'étude. Les pourcentages de consommation les plus élevés correspondent aux personnes arrivant a la fin de l'étape du cycle de vie généralement la plus productive (40 ans ou plus) ; ils diminuent ensuite aux alentours de 70 ans ou plus. Les femmes reçoivent plus fréquemment ce type de prescriptions. Une surveillance continue est donc nécessaire afin de promouvoir l'utilisation adéquate de ces substances et d'éviter de générer d'éventuels problemes de santé dans la population, en particulier chez les personnes âgées.

Adverse effects of respiratory disease medicaments and tooth brushing on teeth: A scanning electron microscopy, X-ray fluorescence and infrared spectroscopy study.

The present study aims to evaluate the effect of brushing with fluoride dentifrice on teeth severely affected by erosion due to respiratory medicaments. Enamel (n = 50) and dentin (n = 50) bovine specimens were prepared and treated with artificial saliva (S-control), acebrofilin hydrochloride (AC), ambroxol hydrochloride (AM), bromhexine hydrochloride (BR), and salbutamol sulfate (SS) and subjected to cycles of demineralization (immersing in 3 mL, 1 min, three times a day at intervals of 1 hr, for 5 days) followed by remineralization (saliva, 37°C, 1 hr). Simulated brushing with fluoridated toothpaste was performed using 810 strokes in a reciprocal-action brushing simulator. Scanning electron microscopy, micro energy dispersive X-ray fluorescence (µ-EDXRF) spectroscopy and attenuated total reflection Fourier transform infrared (ATR FTIR) spectroscopy were then performed. µ-EDXRF images showed extensive erosion after treatment with all medicaments. SEM images showed enamel erosion in order SS > BR > AC = AM > S after brushing and fluoridation. FTIR results were in agreement. In case of dentin, µ-EDXRF measurements showed significant difference in mineral content (percent weight of calcium and phosphate) in SS + brushing + fluoridation treated enamel compared to control, while µ-EDXRF images showed erosive effects in the order SS > AM>BR > AC = S post brushing + fluoridation. SEM images showed erosion in the order SS > AM = BR > AC > S post brushing + fluoridation. Again, FTIR multivariate results were in agreement. Overall, our study shows that proper oral care is critical when taking certain medication. The study also demonstrates the possible use of FTIR for rapid clinical monitoring of tooth erosion in clinics.

La Farmacovigilancia en Cuba y la Infranotificaciones de Reacciones Adversas a los Medicamentos / Pharmacovigilance in Cuba and Adverse Reactions to Drugs Underreporting / Farmacovigilância em Cuba e Subnotificações de Reções Adversas a Medicamentos / Pharmacovigilance à Cuba et Sous-déclaration des Réactions Indésirables aux Médicaments

Resumen Objetivo: Efectuar una revisión de los conocimientos sobre la Farmacovigilancia, el suministro de información sobre sospechas de RAM, que es tanto un deber moral para el médico y otros profesionales de salud como un aspecto de la atención al paciente y la infranotificación de estos reportes. Material y métodos: La revisión fue realizada en las bases de datos LILACS, PAHO, SciELO, EMBASE, PubMed e Infomed, los motores de búsqueda Google y Google Scholar donde se colocaron palabras claves para la búsqueda de la información en artículos originales, tesis, otros artículos de revisión bibliográfica y revistas de elevado índice de citación publicados desde 1937 a 2017, en los idiomas español o inglés. Resultados: Se identificaron 100 artículos, de los cuales 30 fueron seleccionados como útiles verificados para actualizar los conceptos relacionados con las disciplinas de Farmacovigilancia. En la práctica clínica existen varios factores que pueden dificultar la detección de las RAM y como consecuencia contribuir a la infranotificación. Conclusiones: La infranotificación en Farmacovigilancia es una realidad mundial, observándose que la mayoría de las publicaciones analizadas que proceden de Europa (Alemania, España y Reino Unido) y en países de América Latina como Colombia, reconocen bajos índices de notificación.

Abstract Object: The article proposes a pharmacovigilance knowledge review, the provisión of information on suspicion of AMR, which is both a moral duty for the doctor and other health professionals and an aspect of patient care and the underreporting of them. Materials and methods: The review was carried out in the databases LILACS, PAHO, SciELO, EMBASE, PubMed and Infomed, the Google search engines and Google Scholar where keywords were placed for the search of the information in original articles, theses, other articles of bibliographic review and high citation index journals published from 1937 to 2017, in Spanish or English. Results: Consequently 100 articles were identified, 30 of which were selected as verified tools to update the concepts related to Pharmacovigilance discipline. There are several factors in clinical practice that can hinder the detection of ADR and it could contribute to under-reporting. Conclusión: In pharmacovigilance the under-reporting is a global reality, noting that most of the analyzed publications come from Europe (Germany, Spain and the United Kingdom) and in Latin American countries such as Colombia, recognize low reporting rates.

Resumo Objetivo: O artigo propõe uma revisao de literatura sobre farmacovigilancia, fornecendo informações sobre suspeitas de RAM, que é um dever moral para os médicos e outros profissionais de saúde como um aspecto da assistencia ao doente e subnotificação desses relatórios. Materiais e métodos: A pesquisa foi realizada nas bases de dados LILACS, PAHO, SciELO, EMBASE, PubMed e Infomed, nos motores de busca Google e Google Scholar, onde foram colocadas as palavras-chave para encontrar as informações em artigos originais, teses, outros artigos de revisão bibliográfica e de revistas de alto índice de citação publicados de 1937 a 2017, em espanhol ou inglês. Resultados: Foram identificados 100 artigos, dos quais 30 foram selecionados como instrumentos importantes para atualização dos conceitos relacionados á disciplina de farmacovigilancia. Na prática clínica, existem vários fatores que podem dificultar a detecção de RAM e, consequentemente, contribuir para uma subnotificação Conclusão: Na farmacovigilãncia, a subnotificação é uma realidade mundial, observando que a maioria das publicações analisadas provenientes da Europa (Alemanha, Espanha e Reino Unido) e dos países latino-americanos como a Colõmbia, reconhecem baixos índices de notificação.

Résumé Objectif: Procéder á une revue de littérature des connaissances sur la pharmacovigilance et la fourniture d'informations sur la suspicion de Réactions Indésirables aux Médicaments (RIM), qui est autant un devoir moral pour le médecin et pour d'autres professionnels de la santé qu'un aspect des soins aux patients, ainsi que sur la sous-déclaration. Matériaux et méthodes: La revue a été réalisée á l'aide des bases de données LILACS, PAHO, SciELO, EMBASE, PubMed et INFOMED, et des moteurs de recherche Google et Google Scholar, en utilisant des mots clés pour chercher des informations dans des articles originaux, théses, articles de revue de littérature et revues ayant des indices de citations élevés, publiés entre 1937 et 2017, en espagnol ou en anglais. Résultats: 100 articles ont été identifiés, dont 30 ont été sélectionnés comme utiles pour actualiser les concepts en relation avec les disciplines impliquées dans la pharmacovigilance. Dans la pratique clinique, plusieurs facteurs peuvent entraver la détection des RIM et, par conséquent, contribuer á la sous-déclaration. Conclusions: La sous-déclaration en pharmacovigilance est une réalité mondiale. Dans la plupart des publications analysées provenant d'Europe (Allemagne, Espagne et Royaume-Uni) et des pays d'Amérique latine comme la Colombie, on a pu observer la reconnaissance d'un faible taux de déclaration.

Patrón de consumo de antineoplásicos utilizados para el tratamiento del cáncer en La Habana del 2011-2015 / Pattern of consumption of antineoplastic used for the treatment of cancer in Havana 2011-2015 / Padrão de consumo de antineoplasicos utilizados no tratamento do cancro em Havana 2011-2015 / Modèle de consommation d'antinéoplasiques utilisés pour le traitement du cancer à La Havane 2011-2015

Resumen Objetivo: Caracterizar el patrón de consumo de los antineoplásicos utilizados para el tratamiento de los pacientes con neoplasias en la provincia La Habana durante el período 2011-2015. Materiales y métodos: Estudio descriptivo, de utilización de medicamentos de consumo con elementos de consecuencias prácticas expresadas en unidades vendidas. Los datos se obtuvieron de la base de datos de la Droguería, según el Formulario Nacional de Medicamentos presente cada año en el Cuadro Básico, durante el período 2011-2015, pertenecientes al Cuadro Básico de Medicamentos de la provincia. Los datos de consumo en unidades físicas de los antineoplásicos se obtuvieron a partir de las ventas por productos de la Unidad Empresarial de Base Mayorista de Medicamentos La Habana. Los precios se obtuvieron del listado oficial de precios: PRECIOS1, del Ministerio de Finanzas y Precios. Se consideró consumo ideal a lo planificado según la demanda de las instituciones de salud y real a la cantidad de unidades vendidas a dichas instituciones. Resultados: El consumo de manera general se mostró ascendente en cada año de estudio de (488578) a (753587). El mayor consumo se concentró en las mostazas nitrogenadas (116709), análogos del ácido fólico (113333), platinos (70336), derivados de la podofilotoxina (61551) y anticuerpos monoclonales (38294). El costo del consumo de medicamentos fue de $51.403.612,75. Conclusiones: El patrón de consumo según unidades vendidas se caracterizó por un incremento del mismo por años de estudio en los diferentes subgrupos con independencia del cumplimiento o no de las solicitudes demandadas por las unidades de salud. El valor económico del consumo de antineoplásicos se incrementó. Los anticuerpos monoclonales fueron el grupo de mayor costo identificado en el estudio.

Abstract Objective: To characterize the consumption pattern of the antineoplastic drugs used for the treatment of patients with neoplastic in the province of La Habana during the period 2011-2015. Materials and methods: Descriptive study of the use of consumer drugs with elements of practical consequences expressed in units sold. The data were obtained from the database of drugstore, according to National Formulary of Medications, present each year in the Basic Chart, during the period 2011-2015, belonging to the Basic Chart of Medicines of the province. The consumption data in physical units of the antineoplastic ones were obtained from the sales by products of the Business Unit of Base Wholesale of Medicine Havana. The prices were obtained from the oficial price list: PRECIOS1, from the Ministry of Finance and Prices. Ideal consumption was considered as planned according to the demand of health institutions and real to the number of units sold to these institutions. Results: Consumption in general was upward in each year of study from (488578) to (753587). The highest consumption was concentrated on nitrogen mustards (116709), folic acid analogues (113333), platines (70336), podophyllotoxin derivatives (61551) and monoclonal antibodies (38294). The cost of drug consumption was $ 51,403,612.75. Conclusions: The pattern of consumption according to units sold was characterized by an increase of the same by years of study in the different subgroups independently of the compliance or not of the requests demanded by the health units. The economic value of antineoplastic consumption increased. Monoclonal antibodies were the highest cost group identified in the study.

Resumo Objetivo: Caracterizar o padrão de consumo de agentes antineoplásicos utilizados no tratamento em utentes com neoplasia na provincia de Havana durante o período de 2011 a 2015. Materiais e métodos: Estudo descritivo, com a utilização de medicamentos, com elementos de consequências prácticas expressas em unidades vendidas. Os dados foram obtidos através do banco de dados de medicação, obtida do Formulário Nacional de Medicamentos em cada ano e representados no Gráfico Básico durante o período 2011-2015. Os dados relativos ao consumo dos antineoplásicos foram obtidos a partir das vendas da Unidade de Negócios da Wholesale Drug Base de Havana. Os preços foram obtidos pela lista de preços oficiais: PREçOS1, do Ministério das Finaças e Preços. Considerou-se que o consumo ideal o planeado de acordo com a procura das Instituiçoes de Saúde e o real as quantidades de unidades vendidas nestas Instituiçoes. Resultado: O consumo geral tem vindo a aumentar em cada ano de estudo, passe de 488578 para 753587. O principal produto consumido foi a mostarda de nitrogenio (116709), análogos de ácido fólico (113333), platinas (70336), derivados de podofilotoxina (61551) e os anticorpos monoclonais (38294). O valor do consumo dos medicamentos foi de US $ 51.403.612,75. Conclusões: O padrão de consumo, de acordo com as unidades vendidas, foi caracterizado por um aumento de acordo com as unidades acrescidas pelos anos de estudos nos diferentes subgrupos, independentemente da conformidade ou não dos pedidos exigidos pelas unidades de saúde. Os gastos com o consumo de antineoplásicos aumentou. Os anticorpos monoclonais foi o grupo identificado no estudo com maior custo.

Résumé Objectif: Caractériser le profil de consommation des antinéoplasiques utilisés pour le traitement des patients atteints de néoplasies dans la province de La Habana pendant la période 2011-2015. Matériaux et méthode: étude descriptive de l'utilisation de médicaments incluant des éléments de conséquences pratiques exprimés en unités vendues. Les données ont été obtenues a partir de la base de données de la Pharmacie pour la période 2011-2015, selon le Formulaire National de Médicaments représenté chaque année dans la Liste des Médicaments Essentiels de cette province. Les données de consommation en unités physiques d'antinéoplastiques ont été obtenues a partir des ventes de chaque produit par l' «Unidad Empresarial de Base Mayorista de Medicamentos La Habana¼ (Unité de base de commerce en gros de médicaments La Havane). Les prix ont été obtenus a partir de la liste des tarifs officiels PRECIOS1, du Ministere des Finances et des Prix. La consommation idéale considérée correspond a la planification réalisée a partir de la demande des institutions de santé et la consommation réelle a la quantité d'unités vendues dans ces institutions. Résultats: Globalement, la consommation a augmenté chaque année étudiée, passant de 488578 a 753587 unités. La consommation la plus importante s'est concentrée sur les moutardes azotées (116709), les analogues d'acide folique (113333), les platines (70336), les dérivés de la podophyllotoxine (61551) et les anticorps monoclonaux (38294). Le cout de la consommation de médicaments a été de 51.403.612,75$. Conclusions: Le modele de consommation selon les unités vendues s'est caractérisé chaque année par une augmentation dans les différents sous- groupes, indépendamment de la satisfaction ou non des demandes réalisées par les unités de santé. La valeur économique de l'utilisation antinéoplasique a augmenté. Le groupe des anticorps monoclonaux a représenté le cout le plus élevé.

ATR-FTIR spectroscopy and µ-EDXRF spectrometry monitoring of enamel erosion caused by medicaments used in the treatment of respiratory diseases.

Medicaments essential for alleviation of diseases may sometime adversely affect dental health by eroding the enamel, owing to their acidic nature. It is therefore highly desirable to be able to detect these effects quickly and reliably. In this study, we evaluated the erosive capacity of four most commonly prescribed respiratory disease syrup medicaments on enamel using micro-energy-dispersive X-ray fluorescence spectrometry (µ-EDXRF) and attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR). Fifty-five enamel fragments obtained from 30 bovine teeth were treated with artificial saliva (S), acebrofilin hydrochloride (AC), ambroxol hydrochloride (AM), bromhexine hydrochloride (BR), and salbutamol sulfate (SS); by immersing in 3 mL of respective solutions for 1 min, three times a day at intervals of 1 hr, for 5 days. µ-EDXRF analysis of enamel surface did not reveal significant erosion caused by the medications. However, ATR-FTIR showed a detectable shift in the phosphate (PO4 ) antisymmetric stretching mode (ν3 ) at ∼985 cm-1 for AM, BR, and SS, indicating erosion. Multivariate statistical analysis showed that AC, AM, SS, and BR could be classified with 70%, 80%, 100%, and 100% efficiency from S (control), further highlighting the ability of ATR-FTIR to identify degree of erosion. This suggests ATR-FTIR may be used to rapidly and nondestructively investigate erosive effects of medicaments.

Comparative evaluation of postoperative pain intensity after single-visit and multiple-visit retreatment cases: a prospective randomized clinical trial / Avaliação comparativa da intensidade da dor pos-operatoria após casos de retratamento em sessao unica ou multipla: estudo clínico randomizado prospectivo

Objectives: This study was designed to evaluate postoperative pain after endodontic retreatment. Material and Methods: Asymptomatic, multirooted molar & premolar teeth requiring retreatment with 2­5 mm periapical lesions were included. Seventy-eight teeth were randomly placed in four groups (n=20): single-visit (control, group 1), Ledermix (group 2), metronidazole, ciprofloxacin, minocycline mixture (group 3), calcium hydroxide (group 4). The postoperative pain was recorded using a VAS at 6, 12, 24, and 48 h after retreatment. Statistical evaluation was performed using TwoWay Repeated Measures ANOVA and Tukey test. Results: Mild pain occurred in 67.5%, moderate in 30%, and flare-ups in 2.5%, and there was a significant difference between the groups (p <0.01). Significantly lower postoperative pain was observed in TAP and CaOH2 groups (p <0.05). In the 6, 12, and 24 h intervals, there was a significant difference in the pain levels (p <0.05). Conclusion: TAP and CaOH2 are effective for reducing postoperative pain after retreatment. (AU)

Objetivo: Este estudo foi projetado para avaliar a dor pós-operatória após o retratamento endodôntico. Material e Métodos: Foram incluídos dentes molares e pré-molares multirradiculados e assintomáticos que necessitavam de retratamento com lesões periapicais de 2-5 mm. Setenta e oito dentes foram distribuídos aleatoriamente em quatro grupos (n = 20): sessão única (controle, grupo I), Ledermix (grupo II), metronidazol, ciprofloxacina, mistura de minociclina (grupo III), hidróxido de cálcio (grupo IV). A dor pós-operatória foi registrada usando um VAS às 6, 12, 24 e 48 h após o retratamento. A análise estatística foi realizada utilizando ANOVA de dois fatores para medidas repetidas e teste de Tukey. Resultados: Ocorreu dor leve em 67,5%, moderada em 30% e agudizações 2,5%, e houve diferença significativa entre os grupos (p <0,01). Foi observada dor pós-operatória significativamente menor nos grupos TAP e hidróxido de cálcio (p <0,05). Nos intervalos de 6, 12 e 24 h, houve diferença significativa nos níveis de dor (p <0,05). Conclusão: TAP e hidróxido de cálcio são eficazes para reduzir a dor pós-operatória após o retratamento.(AU)

Fast monitoring of tooth erosion caused by medicaments used in the treatment of respiratory diseases by ATR-FTIR and µ-EDXRF analysis.

The present study aimed to evaluate the erosive potential of four most commonly prescribed syrup medicaments for respiratory diseases. Attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy combined with multivariate statistical analysis and micro-energy-dispersive X-ray fluorescence spectrometry (µ-EDXRF) mapping was performed. Fifty-five root dentin fragments obtained from the buccal surface of 30 bovine teeth were prepared and divided into five experimental groups (n = 10): control-artificial saliva (S), acebrofilin hydrochloride (AC), ambroxol hydrochloride (AM), bromhexine hydrochloride (BR), and salbutamol sulfate (SS). The S group was stored only in artificial saliva and the other groups were treated with the medicaments (immersed for 1 min in 3 mL of the medication, three times daily, with 1-h intervals between the immersion cycles, during 5 days, 15 immersion cycles). There were a significant decrease in the Ca and P weight percentages (wt%) for dentin after medication treatments, except for AC (p > 0.05). Mineral content of dentin showed a clear gradation with increasing Ca and P wt% reduction in the order S < AC < AM < BR < SS. SS resulted in a significant increase in Ca/P ratio when compared to the control (p < 0.001). ATR-FTIR combined with multivariate, statistical analysis can quickly and reliably indicate extent of dentin erosion. Considering syrups with high-erosive potential should always follow with proper oral hygiene practices or search for an alternative medications void of such detrimental effects. Regular and prolonged use of these medicaments might bear the risk of causing erosion.

Papel de la superfamilia ABC en la resistencia farmacológica / Role of the superfamily of ABC transports in pharmacological resistance / Papel da superfamília ABC na resistência a drogas / Rôle de la superfamille ABC dans la résistance pharmacologique

Resumen Objetivo: Actualizar los conocimientos acerca de los transportadores de la superfamilia ABC vinculados con la resistencia farmacológica. Materiales y métodos: Se realizó un estudio donde se aplicó el método cualitativo, mediante una revisión bibliográfica y documental sobre el tema en fuentes de datos digitales. Se usaron los descriptores DeCs-MeSH: transportadores ABC, superfamilia ABC, resistencia farmacológica, ATP binding- cassette. Se revisaron artículos publicados sobre el tema, a través de los buscadores habituales (Google, PubMed, Cochrane, Future Medicine, Scielo, entre otros), teniendo en cuenta la calidad y la actualidad de ellos. Resultados: Se destaca la importancia clínica de estos transportadores que se relacionan con la aterosclerosis, enfermedades hepáticas, enfermedad de Alzheimer, entre otras. Esto los convierte en dianas atractivas para el diseño de nuevos medicamentos; pero al mismo tiempo, pueden expulsarlos de la célula, haciéndola resistente como a los antitumorales, antimicrobianos y antivirales. Conclusiones: Los transportadores ABC tienen una función central en los efectos adversos que diferentes sustancias, entre ellas los fármacos, tienen sobre la célula. Además, el polimorfismo genético en esta superfamilia se asocia con alteraciones farmacocinéticas que pueden desencadenar resistencia farmacológica; el impacto de estas modificaciones es el centro de recientes investigaciones que las sitúan como posible blanco terapéutico.

Abstract Objective: To update the knowledge about the ABC transporters superfamily linked to drug resistance. Materials and methods: A qualitative study where the method was applied, using a bibliographical and documentary review on the subject of digital data sources was conducted. ABC transporters, ABC superfamily, and drug resistance, binding- ATP cassette: the DECS-MeSH descriptors were using published articles on the subject through the usual search engines (Google, PubMed, Cochrane, Future Medicine, Scielo, among others), counting on the quality and timeliness of them were review. Results: The clinical significance of these transporters is stress as they relate to atherosclerosis, liver disease, Alzheimer's disease, among other conditions. This makes them attractive targets for new drug design; but at the same time, they can expel the cell making it resistant as antitumor, antimicrobial and antiviral. Conclusions: ABC transporters have central role in the adverse effects of different substances, including drugs, have on the cell. In addition, the genetic polymorphism in this superfamily is associated with pharmacokinetic changes that can trigger drug resistance; the impact of these changes is the focus of recent research that place them as a possible therapeutic target.

Resumo Objectivo: Atualizar o conhecimento sobre os transportadores de superfamilia ABC ligada a resistência a drogas. Materiais e métodos: Foi realizado um estudo qualitativo, através de uma revisão da literatura e documental sobre o tema em fontes de dados digitais. Foram utilizados os descritores DeCs-MeSH: transportadores ABC, superfamilia ABC, resistência farmacológica, ATP binding- cassette. Foram pesquisados artigos sobre o tema, através dos motores de busca (Google, PubMed, Cochrane, Future Medicine, Scielo, entre outros), tendo em conta a qualidade e a sua atualidade. Resultados: Destacou-se a importãncia clínica destes transportadores que se relacionam com a aterosclerose, doen9as hepáticas, de Alzheimer, entre outras. Isso os torna alvos atraentes para o design de novos fármacos, mas ao mesmo tempo, os fármacos podem ser expulsos da célula, tornando-a resistente aos antitumorais, antimicrobianos e antivirais. Conclusões: Os transportadores ABC têm uma função central nos efeitos adversos que diferentes substãncias, tais como os fármacos, possuem sobre a célula. Além disso, o polimorfismo genético desta superfamilia está associado as alterações farmacocinéticas que podem desencadear a resistência aos medicamentos; o impacto dessas mudanças é o centro de pesquisas recentes que os coloca como um possível alvo terapéutico.

Résumé Objectif: Actualiser les connaissances sur les transporteurs de la superfamille ABC liés a la résistance pharmacologique. Matériaux et méthodes: Une étude qualitative a été réalisée au moyen d'une recherche bibliographique et documentaire dans différentes sources de données numériques avec les moteurs de recherche habituels (Google, PubMed, Cochrane, Medicine Future, Scielo, entre autres). Les descripteurs DeCs-MeSH utilisés ont été: transporteurs ABC, superfamille ABC, résistance pharmacologique, ATP binding- cassette. Un certain nombre d'articles relatifs au sujet ont été sélectionnés en fonction de leur qualité et de leur actualité. Résultats: Les résultats mettent en avant l'importance clinique de ces transporteurs du fait de leur relation avec l'athérosclérose, certaines maladies hépatiques, la maladie d'Alzheimer, et d'autres affections. Cela en fait des cibles attrayantes pour la conception de nouveaux médicaments; mais en meme temps, ils peuvent expulser des médicaments de la cellule et la rendre résistante aux antitumoraux, antimicrobiens et antiviraux, par exemple. Conclusions: Les transporteurs ABC jouent un role central dans les conséquences néfastes de différentes substances, y compris les médicaments, sur la cellule. En outre, le polymorphisme génétique dans cette superfamille est associé a des modifications pharmacocinétiques qui peuvent déclencher une résistance aux médicaments; l'impact de ces modifications est l'objet de recherches récentes qui les placent comme cible thérapeutique possible.

Antiangiogenic activity of a bevacizumab-loaded polyurethane device in animal neovascularization models.

PURPOSE: To evaluate the antiangiogenic activity of bevacizumab-loaded polyurethane using two animal models of neovascularization. METHODS: The percentage of blood vessels was evaluated in a chicken chorioallantoic membrane model (n=42) and in the rabbit cornea (n=24) with neovascularization induced by alkali injury. In each model, the animals were randomly divided into the groups treated with the bevacizumab-loaded polyurethane device, phosphate-buffered-saline (negative control) and bevacizumab commercial solution (positive control). Clinical examination, as well as histopathological and immunohistochemical evaluation, were performed in the rabbit eyes. Microvascular density in hot spot areas was determined in semi-thin sections of corneal tissue by hematoxylin-eosin staining and factor VIII immunohistochemistry. Immunohistochemical analysis was also performed to evaluate VEGF expression. RESULTS: In the evaluated models, the use of bevacizumab (Avastin®) and the bevacizumab-loaded polyurethane device led to similar results with regard to inhibition of neovascularization. In the chorioallantoic membrane model, the bevacizumab-loaded polyurethane device reduced angiogenesis by 50.27% when compared to the negative control group. In the rabbit model of corneal neovascularization, the mean density of vessels/field was reduced by 46.87% on analysis of factor VIII immunohistochemistry photos in the bevacizumab-loaded polyurethane device group as compared to the negative control (PBS) sections. In both models, no significant difference could be identified between the bevacizumab-loaded polyurethane device and the positive control group, leading to similar results with regard to inhibition of neovascularization. CONCLUSIONS: The present study shows that the bevacizumab-loaded polyurethane device may release bevacizumab and inhibit neovascularization similarly to commercial bevacizumab solution in the short-term.

In vitro evaluation of the antimicrobial effects of different intracanal medications in necrotic immature teeth.

AIM: This was to assess the antimicrobial effectiveness of pastes used as intracanal medicaments against Enterococcus faecalis in necrotic immature teeth. METHOD: An agar-disc diffusion method over a period of 30 days was used. The following medications were analysed: triple antibiotic paste (TAP) I; double antibiotic paste (DAP) I; DAP I with calcium hydroxide; calcium hydroxide paste with saline solution 0.9 %; calcium hydroxide paste with chlorhexidine 2 % gel; DAP II; DAP II with zinc oxide; DAP II with calcium hydroxide; and saline solution 0.9 % as control. The diameters of the halos of inhibition (in mm) of tested medicaments were determined and analysed with one-way analysis of variance and Tukey's post hoc tests. RESULTS: TAP I (G1) was significantly more effective against E. faecalis, and showed the largest halo of inhibition during all the experiments. DAP groups (G2 and G6) also showed inhibiting bacterial growth with said inhibition remaining stable throughout the 30-day period. In contrast, G4 and G5 groups, in which Ca(OH)2 was added to saline and chlorhexidine, had no antibacterial effect. CONCLUSIONS: TAP and DAP showed better antibacterial efficacy and remained active for 30 days. Combination of Ca(OH)2 with antibiotics should be avoided, due to the possibility of antibiotic hydrolysis.

Accuracy of Turbidimetric Limulus Amebocyte Lysate Assay for the Recovery of Endotoxin Interacted with Commonly Used Antimicrobial Agents of Endodontic Therapy.

INTRODUCTION: This study was conducted to investigate whether the interaction between the turbidimetric limulus amebocyte lysate (LAL) substrate for endotoxin measurement and the substances/antimicrobial agents used in endodontic therapy can lead to the inhibition/enhancement of endotoxin recovery. METHODS: Ten microliters of a suspension of Escherichia coli endotoxin (O55:B55) was inoculated and kept in contact for 1 hour with different substances categorized as follows: group 1: auxiliary chemical substances: 5.25% and 2.5% sodium hypochlorite solutions, 2% chlorhexidine (CHX) (gel and solution), 1% Natrosol gel (Drogal Chemicals and Pharmaceuticals Ltd, Piracicaba, SP, Brazil), 17% EDTA, 10% citric acid, 3% hydrogen peroxide, 5% sodium thiosulfate, and 0.5% Tween 80 associated with 0.07% soy lecithin (Drogal Chemicals and Pharmaceuticals Ltd) and group 2: intracanal medications: neomycin/polymyxin B/hydrocortisone (Otosporin; Glaxo Wellcome, Rio de Janeiro, RJ, Brazil); calcium hydroxide (Ca[OH]2); Ca(OH)2 + 2% CHX gel; Ca(OH)2 + 2% CHX gel + zinc oxide eugenol; Ca(OH)2 + camphorated paramonochlorophenol (Calen; S.S. White, Rio de Janeiro, RJ, Brazil); triple antibiotic paste; mineral trioxide aggregate (MTA); and iodoform. Positive and negative controls consisted of root canal hemorrhagic exudate and pyrogen-free sterile water, respectively. All samples were diluted up to a 10:4 dilution. Each dilution was individually examined by the turbidimetric LAL assay. Collected data were analyzed through performance characteristics of the LAL assay such as linearity, coefficient of variation percentage, and product positive control (PPC) values. RESULTS: Correlation coefficient (≥0.980) and coefficient of variation percentage (<10%) of the standard curve in triplicate showed the tests' linearity. Spike recovery of auxiliary chemical substances achieved PPC values ranging from 50%-197%, showing no interferences with LAL substrate. Conversely, 3% hydrogen peroxide achieved product inhibition in which endotoxin values were underestimated even after the 10:4 dilutions. Regarding intracanal medicaments, neomycin/polymyxin B/hydrocortisone also inhibited endotoxin detection in all dilutions investigated (PPC values <50%). In contrast, Ca(OH)2 + 2% CHX gel + ZOE as well as triple antibiotic paste led to the enhancement of endotoxin detection in which endotoxin values could not be validated by the turbidimetric kinetic LAL assay (PPC value >200%). CONCLUSIONS: The performance characteristics of the kinetic turbidimetric assay for endotoxin measurement, such as precision and reproducibility, are modulated by the interaction of the LAL substrate with the substances/antimicrobial agents used in endodontic therapy.