Genomic Characterization of the Taylorella Genus

The Taylorella genus comprises two species: Taylorella equigenitalis, which causes contagious equine metritis, and Taylorella asinigenitalis, a closely-related species mainly found in donkeys. We herein report on the first genome sequence of T. asinigenitalis, analyzing and comparing it with the recently-sequenced T. equigenitalis genome. The T. asinigenitalis genome contains a single circular chromosome of 1,638,559 bp with a 38.3% GC content and 1,534 coding sequences (CDS). While 212 CDSs were T. asinigenitalis-specific, 1,322 had orthologs in T. equigenitalis. Two hundred and thirty-four T. equigenitalis CDSs had no orthologs in T. asinigenitalis. Analysis of the basic nutrition metabolism of both Taylorella species showed that malate, glutamate and alpha-ketoglutarate may be their main carbon and energy sources. For both species, we identified four different secretion systems and several proteins potentially involved in binding and colonization of host cells, suggesting a strong potential for interaction with their host. T. equigenitalis seems better-equipped than T. asinigenitalis in terms of virulence since we identified numerous proteins potentially involved in pathogenicity, including hemagluttinin-related proteins, a type IV secretion system, TonB-dependent lactoferrin and transferrin receptors, and YadA and Hep_Hag domains containing proteins. This is the first molecular characterization of Taylorella genus members, and the first molecular identification of factors potentially involved in T. asinigenitalis and T. equigenitalis pathogenicity and host colonization. This study facilitates a genetic understanding of growth phenotypes, animal host preference and pathogenic capacity, paving the way for future functional investigations into this largely unknown genus

Religião e uso de drogas por adolescentes Religion and drug use by adolescents

INTRODUÇÃO: Estudos internacionais e nacionais mostram que a religiosidade é um modulador importante no consumo de álcool e drogas entre estudantes adolescentes. OBJETIVOS: verificar se diferentes variáveis da religiosidade influenciam o uso freqüente e/ou pesado de álcool e drogas entre estudantes de 1º e 2º graus. MÉTODOS: Estudo transversal com uma técnica de amostragem do tipo intencional. Foi utilizado um questionário anônimo de autopreenchimento. A amostra foi constituída por 2.287 estudantes de escolas públicas periféricas e centrais e escolas particulares da cidade de Campinas, SP, entrevistados no ano de 1998. As drogas estudadas foram: álcool, tabaco, solventes, medicamentos, maconha, cocaína e ecstasy. As variáveis independentes incluídas na análise de regressão logística foram: filiação religiosa, freqüência de ida ao culto/missa por mês, considerar-se pessoa religiosa e educação religiosa na infância. Para identificar como as variáveis de religiosidade influenciam o uso de álcool e drogas utilizaram-se análises bivariadas e a análise de regressão logística para resposta dicotômica. RESULTADOS: O uso pesado de pelo menos uma droga foi maior entre os estudantes que tiveram educação na infância sem religião. O uso no mês de cocaína e de "medicamentos para dar barato" foi maior nos estudantes que não tinham religião. O uso no mês de ecstasy e de "medicamentos para dar barato" foi maior nos estudantes que não tiveram educação religiosa na infância. CONCLUSÕES: Várias dimensões da religiosidade relacionam-se com o uso de drogas por adolescentes, com possível efeito inibidor. Particularmente interessante foi que uma maior educação religiosa na infância mostrou-se marcadamente importante em tal possível inibição.<br>INTRODUCTION: Many international studies show that religion is an important dimension modulating the use of alcohol and drugs by adolescents. OBJECTIVES: to determine which religious variables are associated to frequent or heavy use of alcohol, tobacco and drugs among adolescents in intermediate and high schools in Campinas, Brazil. METHODS: A cross-sectional study using a self-report anonymous questionnaire was administered to 2.287 students from a convenience sample of seven schools: five from central areas (two public and three private schools) and two public schools from the outskirts of the city, in 1998. The study analyzes data regarding the use of alcohol, tobacco, medicines, solvents, marijuana, cocaine and ecstasy. The religious variables included in the regression analysis were: religious affiliation, church attendance, self-assessed religiousness, and religious education in childhood. For the substances, nicotine, alcohol, marijuana, cocaine, ecstasy and "abuse of medicines" a logistic regression analysis for dicotomic answer was applied. RESULTS: The heavy use of at least one drug during the last month was more frequent among students that did not have a religious education during childhood. The use in the last month of cocaine, ecstasy and (abuse of) medicines was more frequent among those students that had no religion (cocaine and medicines) and that did not have a religious education during childhood (ecstasy and medicines). CONCLUSIONS: this study is consistent with previous investigations demonstrating a strong influence of religious variables over the use of drugs among adolescents. Interesting, it was found that no or weaker religious education during childhood was markedly associated with significant more use of drugs during adolescence