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1.
Schweiz Arch Tierheilkd ; 161(6): 395-398, 2019 Jun.
Artigo em Alemão | MEDLINE | ID: mdl-31145682

RESUMO

INTRODUCTION: In Switzerland, just over 700 veterinary medicinal products are authorized. Nevertheless, in practice veterinarians are often confronted with extraordinary situations in which a suitable veterinary medicinal product is not authorized, unavailable or otherwise not applicable. For livestock and horses in particular, this poses a challenge for pharmacotherapy due to food safety regulations. In these cases, the reclassification assistant can be used to determine whether and how a medicinal product containing the appropriate drug can be reclassified and correctly applied in food-producing animals. The users will be guided step by step with selectable options through the online assistant. If the desired reclassification is permitted in the legal framework, information on the withdrawal periods to be observed for the chosen medicinal product will be provided. This online assistant follows an algorithm based on the reclassification cascade and applicable food safety regulations.


INTRODUCTION: En Suisse, un peu plus de 700 médicaments vétérinaires sont autorisés. Néanmoins, dans la pratique, les vétérinaires sont souvent confrontés à des situations extraordinaires dans lesquelles un médicament vétérinaire approprié n'est ni autorisé, ni disponible, ni utilisable pour d'autres raisons. En particulier pour le bétail et les chevaux, cela pose un défi pour la pharmacothérapie en raison de la réglementation sur la sécurité alimentaire. Dans ces cas, l'assistant de reconversion peut être utilisé pour déterminer si et comment un médicament contenant le principe actif approprié peut être reconverti et correctement appliqué. Les utilisateurs seront guidés pas à pas avec des options sélectionnables via l'assistant en ligne. Si la reconversion souhaitée est autorisée dans le cadre légal, des informations sur les délais d'attente à respecter pour le médicament choisi seront fournies. Cet assistant en ligne suit un algorithme basé sur la cascade de reconversion les réglementations applicables en matière de sécurité alimentaire.


Assuntos
Inocuidade dos Alimentos/métodos , Gado , Software , Drogas Veterinárias/classificação , Drogas Veterinárias/normas , Algoritmos , Animais , Microbiologia de Alimentos , Cavalos , Suíça
2.
Schweiz Arch Tierheilkd ; 160(10): 589-595, 2018 Oct.
Artigo em Alemão | MEDLINE | ID: mdl-30301712

RESUMO

INTRODUCTION: Phytotherapy becomes increasingly popular in veterinary medicine. To fully exploit the therapeutic potential of medicinal plants and ensure their safe use, knowledge about the effective plant parts and preparations is required. Improper use and overdosage of medicinal plants can be toxic. With www.phytoarznei.ch, we provide an online decision support aid that allows for the retrieval of currently available information on medicinal plants and their use in domestic animals. This decision support system is based on the available literature in the field, which after critical evaluation has been incorporated into a structured database. For each medicinal plant or drug, we have listed therapeutic indications, different application types, organoleptic properties, plant ingredients, pharmacological effects, dosages, duration of treatment, toxicity, legal frame for use in livestock and relevance for doping. A user-friendly access to all data is achieved by means of two search programs, either by entering the plant name or name of the drug in a search field or by selecting the desired animal species and therapeutic application from respective drop-down lists. This database on medicinal plant applications in animals is linked to the poisonous plant database of the University of Zurich and, for marketed preparations, to the Swiss compendium of veterinary medicinal products as well as to an index of related veterinary products.


INTRODUCTION: En médecine vétérinaire aussi, la phytothérapie devient de plus en plus populaire. Exploiter le potentiel thérapeutique des plantes médicinales et assurer leur utilisation en toute sécurité nécessite toutefois une connaissance particulière des parties de plantes ou des préparations efficaces. Une utilisation inappropriée et un surdosage de plantes médicinales peuvent être toxiques. C'est pourquoi nous avons créé un outil de prise de décision en ligne, www.phytoarznei.ch, qui permet un accès rapide aux connaissances actuelles sur les plantes médicinales et leur utilisation sur les animaux. Ce système d'information est basé sur la littérature spécialisée disponible qui a été incorporée, après une évaluation critique, dans une base de données structurée. Les indications thérapeutiques, les modes d'applications, les propriétés organoleptiques, les composants, les effets pharmacologiques, doses, la durée du traitement, la toxicité, les réglementations juridiques chez les animaux de rente ainsi que la pertinence en matière de dopage sont répertoriés pour chaque plante médicinale ou médicament à base de plantes. Deux programmes de recherche fournissent un accès convivial, soit par la saisie du nom de la plante, du nom du médicament ou des ingrédients de la plante dans une zone de recherche, soit en sélectionnant les espèces d'animaux souhaitées ainsi que l'utilisation thérapeutique dans des menus déroulants correspondants. Cette base de données des plantes médicinales est liée avec base de plantes toxiques de l'Université de Zurich et, si des produits finis correspondants sont disponibles, au Compendium des médicaments vétérinaires suisse ainsi qu'à un répertoire de produits vétérinaires.


Assuntos
Sistemas de Apoio a Decisões Clínicas , Disseminação de Informação/métodos , Internet , Fitoterapia/veterinária , Drogas Veterinárias , Medicina Veterinária/métodos , Animais , Humanos
3.
Schweiz Arch Tierheilkd ; 160(4): 219-226, 2018 Apr.
Artigo em Alemão | MEDLINE | ID: mdl-29615380

RESUMO

INTRODUCTION: The administration of antibiotics in livestock has been criticized for many years, in particular because of an inappropriate use and the appearance of antibiotic residues in the environment, which can promote the emergence and spread of resistant bacteria. However, antibiotics are essential for the successful and sustainable control of bacterial pathogens. With the aim of optimizing the use of antibiotics in food animals and minimizing the prevalence of resistant bacteria, AntibioticScout. ch provides a decision aid for the prudent use of antimicrobial drugs. This approach emphasizes the importance of supportive therapy and the hallmarks of preventive concepts. Procedures to improve animal health and animal welfare in accordance with the principles of good veterinary practice are primary and effective tools to reduce the use of antimicrobial drugs. The necessary reduction in the use of antibiotics must, therefore, be accompanied by appropriate management strategies in animal husbandry. In particular, hygiene, animal welfare and biosecurity measures are crucial to ensure an optimal health status in farm animals.


INTRODUCTION: On discute depuis des années de l'usage des antibiotiques dans l'élevage des animaux de rente, en particulier en ce qui concerne leur utilisation incorrecte et la charge environnementale liée à des résidus d'antibiotiques susceptibles de favoriser l'apparition et la propagation de résistances. Toutefois les antibiotiques sont essentiels pour assurer une lutte efficace et durable contre les maladies d'origine bactérienne. Dans le but d'optimiser l'usage des antibiotiques dans l'élevage des animaux de rente et, par conséquence, de réduire le développement de résistances, AntibioticScout.ch propose une aide à la décision pour un usage prudent de ces substances ("prudent use"). Parallèlement, on attire l'attention sur les traitements adjuvants et sur les mesures de prévention. Des mesures visant à améliorer la santé et le bien-être des animaux en tenant compte des fondements d'une bonne pratique vétérinaire sont des instruments efficaces pour réduire l'usage des antibiotiques. Cette réduction indispensable doit donc être combinée avec des mesures de gestion adéquates dans les élevages. Ce sont en particulier l'hygiène et les conditions d'élevage correctes ainsi que la mise en place de mesures de biosécurité qui sont décisives pour l'optimisation de la santé des troupeaux.


Assuntos
Criação de Animais Domésticos/métodos , Anti-Infecciosos/administração & dosagem , Doenças dos Bovinos/prevenção & controle , Sistemas de Apoio a Decisões Clínicas , Drogas Veterinárias/administração & dosagem , Animais , Bovinos , Doenças dos Bovinos/microbiologia , Medicina Veterinária/métodos
4.
Mol Oral Microbiol ; 33(3): 224-233, 2018 06.
Artigo em Inglês | MEDLINE | ID: mdl-29319934

RESUMO

Type II toxin/antitoxin (TA) systems contribute to the formation of persister cells and biofilm formation for many organisms. Aggregatibacter actinomycetemcomitans thrives in the complex oral microbial community subjected to continual environmental flux. Little is known regarding the presence and function of type II TA systems in this organism or their contribution to adaptation and persistence in the biofilm. We identified 11 TA systems that are conserved across all seven serotypes of A. actinomycetemcomitans and represent the RelBE, MazEF and HipAB families of type II TA systems. The systems selectively responded to various environmental conditions that exist in the oral cavity. Two putative RelBE-like TA systems, D11S_1194-1195 and D11S_1718-1719 were induced in response to low pH and deletion of D11S_1718-1719 significantly reduced metabolic activity of stationary phase A. actinomycetemcomitans cells upon prolonged exposure to acidic conditions. The deletion mutant also exhibited reduced biofilm biomass when cultured under acidic conditions. The D11S_1194 and D11S_1718 toxin proteins inhibited in vitro translation of dihydrofolate reductase (DHFR) and degraded ribosome-associated, but not free, MS2 virus RNA. In contrast, the corresponding antitoxins (D11S_1195 and D11S_1719), or equimolar mixtures of toxin and antitoxin, had no effect on DHFR production or RNA degradation. Together, these results suggest that D11S_1194-1195 and D11S_1718-1719 are RelBE-like type II TA systems that are activated under acidic conditions and may function to cleave ribosome-associated mRNA to inhibit translation in A. actinomycetemcomitans. In vivo, these systems may facilitate A. actinomycetemcomitans adaptation and persistence in acidic local environments in the dental biofilm.


Assuntos
Aggregatibacter actinomycetemcomitans/metabolismo , Antitoxinas/isolamento & purificação , Antitoxinas/metabolismo , Toxinas Bacterianas/isolamento & purificação , Toxinas Bacterianas/metabolismo , Proteínas de Bactérias/genética , Biofilmes/crescimento & desenvolvimento , Deleção de Genes , Concentração de Íons de Hidrogênio , Levivirus , Boca/microbiologia , RNA Viral/metabolismo , Ribonucleases/metabolismo , Estresse Fisiológico
5.
Schweiz Arch Tierheilkd ; 159(10): 525-533, 2017 Oct.
Artigo em Alemão | MEDLINE | ID: mdl-28952960

RESUMO

INTRODUCTION: Bacterial resistances to antimicrobial drugs pose serious public health challenges. The observed increase of resistances is attributed to the uncontrolled, massive and often unnecessary administration of antibiotics both in human and veterinary medicine. To support the responsible use of antimicrobials in animals and help veterinarians selecting the most suitable antimicrobial drugs, we developed the AntibioticScout.ch as a comprehensive decision supporting tool providing online access to the current knowledge of rational antibiotic prescription practices. User-friendly search functions allow for the fast and efficient retrieval of information that is structured in this database by animal species, organ systems and therapeutic indications. In addition, an online form allows to report treatment failures in order to identify problematic cases as well as ensuing risks and take appropriate mitigation measures. The present report describes the workflow of this decision support system applied to the prudent use of antimicrobials in companion animal medicine.


INTRODUCTION: Les résistances bactériennes face aux substances antimicrobiennes placent le système de santé face à de grands défis. L'augmentation des résistances est attribuée à une utilisation mal dirigée, massive et souvent inutile d'antibiotiques tant en médecine humaine qu'en médecine vétérinaire. Afin d'encourager une utilisation responsable des substances antimicrobiennes en médecine vétérinaire et pour soutenir les vétérinaires lors du choix de l'antibiotique adapté, on a créé, avec AntibioticScout. ch, une aide à la décision de grande envergure qui permet de recourir à chaque instant aux principes de prescription reconnus de la médecine fondée sur les faits (Evidence Based Medicine). La banque de données est structurée par espèces animales, systèmes d'organes et indications et un moteur de recherche intuitif garantit de trouver rapidement et efficacement les informations. D'autre part un formulaire en ligne pour l'annonce d'une inefficacité est proposé afin de reconnaitre les cas à problèmes et les risques en vue d'améliorer l'aide au diagnostic. La présente contribution pour but de démontrer l'utilisation d'AntibioticScout pour un usage prudent des antibiotiques en médecine des petits animaux.


Assuntos
Anti-Infecciosos/administração & dosagem , Técnicas de Apoio para a Decisão , Farmacorresistência Bacteriana , Medicina Veterinária/métodos , Animais , Anti-Infecciosos/farmacologia , Anti-Infecciosos/uso terapêutico , Doenças do Gato/tratamento farmacológico , Gatos , Bases de Dados Factuais , Diarreia/tratamento farmacológico , Diarreia/veterinária , Doenças do Cão/tratamento farmacológico , Cães , Feminino , Animais de Estimação , Pioderma/tratamento farmacológico , Pioderma/veterinária , Infecções Respiratórias/tratamento farmacológico , Infecções Respiratórias/veterinária , Infecções Urinárias/tratamento farmacológico , Infecções Urinárias/veterinária
6.
Schweiz Arch Tierheilkd ; 158(12): 805-810, 2016 Dec.
Artigo em Alemão | MEDLINE | ID: mdl-27934622

RESUMO

INTRODUCTION: Resistances to antimicrobials pose serious public health challenges. This issue concerns both human and veterinary medicine and can only be solved by a multidisciplinary approach. A comprehensive concept is, therefore, being worked out within the StAR (strategy antibiotic resistance) program in order to preserve the effectiveness of antibiotics for humans as well as animals. In this context, the AntibioticScout (www.AntibioticScout. ch) offers a new online tool for the prudent use of antibiotics in veterinary medicine. By involving all stakeholders, the guidelines included in the AntibioticScout will result in a nationwide accepted standard for the treatment of bacterial infections in animals. An additional system for the rapid reporting of cases of suspected lack of efficacy of antimicrobials is integrated to allow early detection of emerging resistance and the immediate launch of risk mitigation measures. A first version of the AntibioticScout for the treatment of dogs, cats and horses is available by the end of 2016. All stakeholders are now invited to contribute to the development of the AntibioticScout decision support.


INTRODUCTION: Les résistances face aux substances antimicrobiennes placent le système de santé face à de grands défis. Ce problème touche aussi bien la médecine humaine que vétérinaire et ne peut être réglé que de façon transversale. C'est pour cette raison qu'a été développé, avec le programme StAR (Strategie Antibiotikaresistenzen), un concept global pour assurer à long terme l'efficacité des antibiotiques aussi bien chez les hommes que chez les animaux. Dans ce contexte, nous mettons à disposition, avec le développement d'AntibioticScout (www.AntibioticScout. ch), un nouvel outil en ligne pour soutenir un usage responsable des antibiotiques en médecine vétérinaire. Avec le concours de représentants de tous les milieux intéressés, il s'agit de développer les lignes directrices d'un standard accepté au plan national pour le traitement des infections bactériennes chez les animaux et de le mettre à disposition dans AntibioticScout. En outre un système d'annonce immédiate en cas d'inefficacité sera mis en place, afin de repérer précocement les risques et de prendre les mesures correspondantes. Une première version d'AntibioticScout pour le traitement des chiens, chats et chevaux est disponible dès fin 2016. Tous les cercles intéressés sont dès maintenant invités à contribuer au développement d'Antibiotic Scout.


Assuntos
Anti-Infecciosos/farmacologia , Doenças Transmissíveis/tratamento farmacológico , Técnicas de Apoio para a Decisão , Sistemas On-Line , Animais , Anti-Infecciosos/uso terapêutico , Doenças do Gato/tratamento farmacológico , Doenças do Gato/microbiologia , Gatos , Doenças do Cão/tratamento farmacológico , Doenças do Cão/microbiologia , Cães , Resistência Microbiana a Medicamentos , Doenças dos Cavalos/tratamento farmacológico , Doenças dos Cavalos/microbiologia , Cavalos , Humanos
7.
Phys Rev Lett ; 116(15): 151806, 2016 04 15.
Artigo em Inglês | MEDLINE | ID: mdl-27127961

RESUMO

We report results from the first search for ν_{µ}→ν_{e} transitions by the NOvA experiment. In an exposure equivalent to 2.74×10^{20} protons on target in the upgraded NuMI beam at Fermilab, we observe 6 events in the Far Detector, compared to a background expectation of 0.99±0.11(syst) events based on the Near Detector measurement. A secondary analysis observes 11 events with a background of 1.07±0.14(syst). The 3.3σ excess of events observed in the primary analysis disfavors 0.1π<δ_{CP}<0.5π in the inverted mass hierarchy at the 90% C.L.

8.
Mol Oral Microbiol ; 31(5): 379-97, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-26426681

RESUMO

The QseBC two-component system (TCS) is associated with quorum sensing and functions as a global regulator of virulence. Based on sequence similarity within the sensor domain and conservation of an acidic motif essential for signal recognition, QseBC is primarily distributed in the Enterobacteriaceae and Pasteurellaceae. In Escherichia coli, QseC responds to autoinducer-3 and/or epinephrine/norepinephrine. Binding of epinephrine/norepinephrine is inhibited by adrenergic antagonists; hence QseC functions as a bacterial adrenergic receptor. Aggregatibacter actinomycetemcomitans QseC is activated by a combination of epinephrine/norepinephrine and iron, whereas only iron activates the Haemophilus influenzae sensor. QseC phosphorylates QseB but there is growing evidence that QseB is activated by non-cognate sensors and regulated by dephosphorylation via QseC. Interestingly, the QseBC signaling cascades and regulons differ significantly. In enterohemorrhagic E. coli, QseC induces expression of a second adrenergic TCS and phosphorylates two non-cognate response regulators, each of which induces specific sets of virulence genes. This signaling pathway integrates with other regulatory mechanisms mediated by transcriptional regulators QseA and QseD and a fucose-sensing TCS and likely controls the level and timing of virulence gene expression. In contrast, A. actinomycetemcomitans QseC signals through QseB to regulate genes involved in anaerobic metabolism and energy production, which may prime cellular metabolism for growth in an anaerobic host niche. QseC represents a novel target for therapeutic intervention and small molecule inhibitors already show promise as broad-spectrum antimicrobials. Further characterization of QseBC signaling may identify additional differences in QseBC function and inform further development of new therapeutics to control microbial infections.


Assuntos
Proteínas de Bactérias/metabolismo , Enterobacteriaceae/metabolismo , Proteínas de Escherichia coli/metabolismo , Pasteurellaceae/metabolismo , Receptores Adrenérgicos/metabolismo , Transativadores/metabolismo , Aggregatibacter actinomycetemcomitans/genética , Proteínas de Bactérias/genética , Enterobacteriaceae/genética , Enterobacteriaceae/patogenicidade , Proteínas de Escherichia coli/genética , Regulação Bacteriana da Expressão Gênica , Óperon , Pasteurellaceae/genética , Pasteurellaceae/patogenicidade , Fosforilação , Regiões Promotoras Genéticas , Percepção de Quorum/genética , Receptores Adrenérgicos/genética , Regulon , Transdução de Sinais , Transativadores/genética , Virulência/genética
9.
Mol Oral Microbiol ; 30(5): 384-98, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25923132

RESUMO

Aggregatibacter actinomycetemcomitans QseBC regulates its own expression and is essential for biofilm growth and virulence. However, the signal that activates the QseC sensor has not been identified and the qseBC regulon has not been defined. In this study, we show that QseC is activated by catecholamine hormones and iron but not by either component alone. Activation of QseC requires an EYRDD motif in the periplasmic domain of the sensor and site-specific mutations in EYRDD or the deletion of the periplasmic domain inhibits catecholamine/iron-dependent induction of the ygiW-qseBC operon. Catecholamine/iron-dependent induction of transcription also requires interaction of the QseB response regulator with its binding site in the ygiW-qseBC promoter. Whole genome microarrays were used to compare gene expression profiles of A. actinomycetemcomitans grown in a chemically defined medium with and without catecholamine and iron supplementation. Approximately 11.5% of the A. actinomycetemcomitans genome was differentially expressed by at least two-fold upon exposure to catecholamines and iron. The expression of ferritin was strongly induced, suggesting that intracellular iron storage capacity is increased upon QseBC activation. Consistent with this, genes encoding iron binding and transport proteins were down-regulated by QseBC. Strikingly, 57% of the QseBC up-regulated genes (56/99) encode proteins associated with anaerobic metabolism and respiration. Most of these up-regulated genes were recently reported to be induced during in vivo growth of A. actinomycetemcomitans. These results suggest that detection of catecholamines and iron by QseBC may alter the cellular metabolism of A. actinomycetemcomitans for increased fitness and growth in an anaerobic host environment.


Assuntos
Aggregatibacter actinomycetemcomitans/genética , Aggregatibacter actinomycetemcomitans/metabolismo , Proteínas de Bactérias/genética , Catecolaminas/metabolismo , Regulação Bacteriana da Expressão Gênica , Ferro/metabolismo , Aggregatibacter actinomycetemcomitans/crescimento & desenvolvimento , Ferritinas/genética , Perfilação da Expressão Gênica , Aptidão Genética , Mutação , Óperon , Regiões Promotoras Genéticas , Regulon , Respiração , Regulação para Cima
11.
Int J Clin Pract ; 69(3): 281-91, 2015 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-25302822

RESUMO

OBJECTIVE: Type 2 diabetes is a chronic condition that continues to increase in prevalence in the UK. Incretin-based therapies, including liraglutide and sitagliptin, provide adequate blood glucose control. Clinical trials have shown that liraglutide offers greater glycaemic control and body weight reduction in comparison to sitagliptin. We aimed to assess the effectiveness of liraglutide and sitagliptin in routine clinical practice. MATERIALS AND METHODS: We designed and conducted a retrospective database analysis in primary care using the Clinical Practice Research Datalink in the UK. Patients aged ≥ 18 years, diagnosed with type 2 diabetes and prescribed liraglutide or sitagliptin between July 2009 and July 2012, were included in the study. Glycaemic and weight control were investigated 6 months after treatment initiation. RESULTS: A total of 287 liraglutide and 2781 sitagliptin patients were identified. Compared with sitagliptin, liraglutide recipients had greater reductions in HbA1c (%) (-0.90 vs. -0.57, p < 0.01), weight (kg) (-3.78 vs. -1.12, p < 0.001), BMI (kg/m(2) ) (-1.30 vs. -0.39, p < 0.001) and systolic blood pressure (mmHg) (-3.91 vs. -0.39, p < 0.001) after 6 months of treatment. When controlling for potential confounders, liraglutide was more likely than sitagliptin to achieve an HbA1c reduction ≥ 1% (OR = 2.29, 95% CI 1.62-3.25), an HbA1c reduction ≥ 1% and a weight reduction ≥ 3% (OR = 2.99; 95% CI 2.00-4.48) and a target HbA1c < 7% (OR = 2.11; 95% CI 1.45-3.07) after 6 months of treatment. CONCLUSIONS: Clinical trials show superior glycaemic control and weight reduction with liraglutide compared with sitagliptin. This finding is reflected in routine clinical practice in the UK.


Assuntos
Diabetes Mellitus Tipo 2/tratamento farmacológico , Liraglutida/administração & dosagem , Atenção Primária à Saúde/métodos , Fosfato de Sitagliptina/administração & dosagem , Adolescente , Adulto , Idoso , Glicemia/metabolismo , Diabetes Mellitus Tipo 2/sangue , Diabetes Mellitus Tipo 2/epidemiologia , Relação Dose-Resposta a Droga , Quimioterapia Combinada , Feminino , Seguimentos , Hemoglobinas Glicadas/metabolismo , Humanos , Hipoglicemiantes/administração & dosagem , Masculino , Pessoa de Meia-Idade , Prevalência , Estudos Retrospectivos , Resultado do Tratamento , Reino Unido/epidemiologia , Adulto Jovem
12.
Schweiz Arch Tierheilkd ; 157(3): 147-52, 2015 Mar.
Artigo em Alemão | MEDLINE | ID: mdl-26753326

RESUMO

This retrospective study evaluated the frequency, etiology, therapy and prognosis of animal poisoning registered from 2003 to 2012. The relevant cases reported to the Swiss Toxicological Information Center (STIC) were compared with those from previously examined periods. Human medicines not approved for animals and pesticides represented the most common causes of poisoning in dogs. Novel cases occurred as a consequence of the exposure of dogs to ricinus fertilizers, grape residues from wineries, pepper lachrymatory spray and dry bouillon. Cats are still freequently poisoned by pyrethroid drugs that should be administered only to dogs. Agrochmical products are the main source of toxicities in farm animals. Most poisonings in horses and exotic animals took place due to toxic plants. In addition, two tigers died of a secondary poisoning after ingestion of meat from euthanized calves.


Assuntos
Doenças do Gato/induzido quimicamente , Doenças do Cão/induzido quimicamente , Doenças dos Cavalos/induzido quimicamente , Intoxicação/veterinária , Animais , Animais Domésticos , Animais de Zoológico , Doenças do Gato/terapia , Gatos , Doenças do Cão/terapia , Cães , Doenças dos Cavalos/terapia , Cavalos , Humanos , Centros de Controle de Intoxicações/estatística & dados numéricos , Intoxicação/etiologia , Intoxicação/terapia , Prognóstico , Estudos Retrospectivos , Suíça
13.
J Viral Hepat ; 21(10): e129-34, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-24698004

RESUMO

Antiviral therapy has been shown to reduce the risk of disease progression, liver damage and death in patients with chronic hepatitis C virus (HCV) infection. While interferon labels recommend that patients with platelet counts below 50 × 10(3) /µL not receive interferon-based therapy, it is unknown to what extent thrombocytopaenia influences treatment decisions in practice. This study profiles the reasons for withholding antiviral treatment in HCV patients with thrombocytopaenia in five European countries. Medical records of 466 patients who had HCV infection and thrombocytopaenia (platelet count <100 × 10(3) /µL) in 2006 were retrospectively reviewed for clinical characteristics. Collected data included use of antiviral therapy and reasons for withholding therapy. In total 184 of 466 patients (39.5%) did not receive interferon-based therapy during the study period, with treatment withheld most frequently due to multiple clinical characteristics including hepatic cirrhosis (16.3%), thrombocytopaenia (16.3%) and age >60 years (10.9%). The reasons for lack of treatment varied among countries, with thrombocytopaenia as a reason being more common in Italy (10.9%) and Spain (20.0%), and less common in France, Germany and the UK (3.2-7.1%). Overall, thrombocytopaenia was reported as the only reason for withholding treatment in 4.9% of untreated patients. This study demonstrates that thrombocytopaenia is one of many factors, indicative of the poor clinical state of the patient, that contributes to withholding antiviral treatment. In 4.9% of untreated patients, thrombocytopaenia can be considered as a modifiable factor to enable more HCV patients to receive guideline-recommended therapy and thus improved clinical outcomes.


Assuntos
Antivirais/uso terapêutico , Hepatite C Crônica/complicações , Hepatite C Crônica/tratamento farmacológico , Trombocitopenia , Suspensão de Tratamento/estatística & dados numéricos , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Antivirais/efeitos adversos , Europa (Continente) , Feminino , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Adulto Jovem
14.
Mol Oral Microbiol ; 28(1): 70-81, 2013 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-23194602

RESUMO

The periodontal pathogen Porphyromonas gingivalis experiences a number of environmental conditions in the oral cavity, and must monitor and respond to a variety of environmental cues. However, the organism possesses only five full two-component systems, one of which is the hybrid system GppX. To investigate the regulon controlled by GppX we performed RNA-Seq on a ΔGppX mutant. Fifty-three genes were upregulated and 37 genes were downregulated in the ΔGppX mutant. Pathway analyses revealed no systemic function for GppX under nutrient-replete conditions; however, over 40% of the differentially abundant genes were annotated as encoding hypothetical proteins indicating a novel role for GppX. Abundance of small RNA was, in general, not affected by the absence of GppX. To further define the role of GppX with respect to regulation of a hypothetical protein observed with the greatest significant relative abundance change relative to a wild-type control, PGN_0151, we constructed a series of strains in which the ΔgppX mutation was complemented with a GppX protein containing specific domain and phosphotransfer mutations. The transmembrane domains, the DNA-binding domain and the phosphotransfer residues were all required for regulation of PGN_0151. In addition, binding of GppX to the PGN_0151 promoter regions was confirmed by an electrophoretic mobility shift assay. Both the ΔGppX mutant and a ΔPGN_0151 mutant were deficient in monospecies biofilm formation, suggesting a role for the GppX-PGN_0151 regulon in colonization and survival of the organism.


Assuntos
Proteínas de Bactérias/genética , Mutação/genética , Porphyromonas gingivalis/genética , Regulon/genética , Alelos , Fator de Transcrição AraC/genética , Ácido Aspártico/genética , Técnicas Bacteriológicas , Biofilmes/crescimento & desenvolvimento , Perfilação da Expressão Gênica , Regulação Bacteriana da Expressão Gênica/genética , Genes Bacterianos/genética , Sequências Hélice-Volta-Hélice/genética , Histidina Quinase , Humanos , Proteínas de Membrana/genética , Porphyromonas gingivalis/fisiologia , Regiões Promotoras Genéticas/genética , Proteínas Quinases/genética , Análise de Sequência de RNA , Transdução de Sinais/genética
15.
Schweiz Arch Tierheilkd ; 154(12): 521-7, 2012 Dec.
Artigo em Alemão | MEDLINE | ID: mdl-23188764

RESUMO

Pharmacogenetics is the study of genetic determinants of different responses to drug therapy and deals with differences in metabolic pathways and therapeutic effects as well as adverse reactions. A common genetic defect found in veterinary medicine is the MDR1 mutation occurring in Collies and related breeds that leads to an altered P-glycoprotein. Genetic mutations of enzymes (cytochrome P450, thiopurine s-methyltransferase, n-acetyltransferase, UDP-glucuronyltransferase, plasma esterase or sulfotransferase), which are responsible for the metabolism of drugs, are found as well. A decreased functional level of these enzymes can lead to an increased plasma concentration of the drug with a consequent relative overdose.


Assuntos
Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/prevenção & controle , Farmacogenética/métodos , Medicina Veterinária/métodos , Animais , Cães , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/genética , Farmacogenética/normas , Medicina Veterinária/normas
17.
Mol Oral Microbiol ; 27(1): 23-33, 2012 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-22230463

RESUMO

Periodontal diseases result from the interaction of bacterial pathogens with the host's gingival tissue. Gingival epithelial cells are constantly challenged by microbial cells and respond by altering their transcription profiles, inducing the production of inflammatory mediators. Different transcription profiles are induced by oral bacteria and little is known about how the gingival epithelium responds after interaction with the periodontopathogenic organism Aggregatibacter actinomycetemcomitans. In the present study, we examined the transcription of genes involved in signaling transduction pathways in gingival epithelial cells exposed to viable A. actinomycetemcomitans. Immortalized gingival epithelial cells (OBA-9) were infected with A. actinomycetemcomitans JP2 for 24 h and the transcription profile of genes encoding human signal transduction pathways was determined. Functional analysis of inflammatory mediators positively transcribed was performed by ELISA in culture supernatant and in gingival tissues. Fifteen of 84 genes on the array were over-expressed (P < 0.01) after 24 h of infection with viable A. actinomycetemcomitans. Over-expressed genes included those implicated in tissue remodeling and bone resorption, such as CSF2, genes encoding components of the LDL pathway, nuclear factor-κB-dependent genes and other cytokines. The ELISA data confirmed that granulocyte-macrophage colony-stimulating factor/colony-stimulating factor 2, tumor necrosis factor-α and intercellular adhesion molecule-1 were highly expressed by infected gingival cells when compared with control non-infected cells, and presented higher concentrations in tissues from patients with aggressive and chronic periodontitis than in tissues from healthy controls. The induction in epithelial cells of factors such as the pro-inflammatory cytokine CSF2, which is involved in osteoclastogenesis, may help to explain the outcomes of A. actinomycetemcomitans infection.


Assuntos
Aggregatibacter actinomycetemcomitans/fisiologia , Periodontite Agressiva/genética , Periodontite Crônica/genética , Citocinas/biossíntese , Gengiva/microbiologia , Transdução de Sinais/genética , Periodontite Agressiva/metabolismo , Apoptose , Aderência Bacteriana , Estudos de Casos e Controles , Linhagem Celular Transformada , Periodontite Crônica/metabolismo , Fatores Estimuladores de Colônias/biossíntese , Meios de Cultivo Condicionados , Células Epiteliais/microbiologia , Perfilação da Expressão Gênica , Gengiva/citologia , Gengiva/metabolismo , Fator Estimulador de Colônias de Granulócitos e Macrófagos/biossíntese , Humanos , Molécula 1 de Adesão Intercelular/biossíntese , Transcrição Gênica , Fator de Necrose Tumoral alfa/biossíntese
18.
Schweiz Arch Tierheilkd ; 149(10): 439-48, 2007 Oct.
Artigo em Alemão | MEDLINE | ID: mdl-17983016

RESUMO

We received 190 reports of suspected adverse events (SARs) following the use of veterinary drugs for the year 2006: 118 declarations for veterinary drugs and 72 declarations following the application of immunolgical medicinal products. Most of the 118 declarations relate to the use of antiparasitic drugs (48%) and every second declaration to drug use in dogs. Other drug classes concerned were, in decreasing order, antiinfectives (20%) and drugs used off-label (12%; other target species or other indication). For the vaccines, most of the reactions occurred in dogs (62%) followed by horses (11%) and cattle (10%). The most frequently reported reactions concerned the use of a vaccine against piroplasmosis. Another 349 requests for information were processed by the Swiss Toxicological Information center. We also present a case of a serious adverse reaction in form of a Stevens-Johnson syndrome in a cat as well as a case of ketamine abuse. We note the growing interest of practicing veterinarians with pleasure and are currently working on further adaptations to the system.


Assuntos
Sistemas de Notificação de Reações Adversas a Medicamentos , Vigilância de Produtos Comercializados , Vacinas/efeitos adversos , Drogas Veterinárias/efeitos adversos , Medicina Veterinária/normas , Animais , Animais Domésticos , Suíça
19.
Schweiz Arch Tierheilkd ; 149(2): 57-63, 2007 Feb.
Artigo em Alemão | MEDLINE | ID: mdl-17343131

RESUMO

We received 105 reports of suspected adverse events (SARs) following the use of veterinary drugs for the year 2005. This corresponds to a 35% increase compared to 2004. Practicing veterinarians sent most of these declarations. 73% of these concerned drugs used on companion animals. Antiparasitic drugs approved for topical use were the most frequently represented group with 48%, followed by drugs used to treat gastrointestinal disorders (11%) and drugs used off-label (14%; other target species or other indication). For the first time 2 declarations concerning the application of permethrin containing spot-on preparations used by mistake on cats were received. An overview of 20 declarations about adverse reactions following application of different vaccines is also presented with emphasis on the problem of fibrosarcoma in cats. We are pleased by the growing interest shown by practicing veterinarians for the vigilance system and hope to further develop this collaboration in the future.


Assuntos
Sistemas de Notificação de Reações Adversas a Medicamentos , Vigilância de Produtos Comercializados , Vacinas/efeitos adversos , Drogas Veterinárias/efeitos adversos , Medicina Veterinária/normas , Animais , Animais Domésticos , Sistema de Registros , Suíça
20.
Schweiz Arch Tierheilkd ; 148(8): 397-400, 402-4, 2006 Aug.
Artigo em Alemão | MEDLINE | ID: mdl-16933703

RESUMO

The new Swiss ordinance on veterinary drugs poses a new challenge to the veterinarians, specially those working with farm animals. A complete overview about the registered veterinary drugs and immunobiologicals is absolutely necessary to cope with these new tasks: the internet version of the Swiss Veterinary Drug Compendium is a versatile tool to satisfy this needs (http://www.tierarzneimittel.ch). Due to the frequent updates and powerful search possibilities, this database is a reliable and comprehensive information system regarding Swiss veterinary drugs. We will demonstrate how this system can be used as a valuable help in the case of reconversions of drugs (e.g. use of small animal drugs in farm animals).


Assuntos
Legislação de Medicamentos , Legislação Veterinária , Segurança , Drogas Veterinárias/normas , Animais , Suíça
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