A career exploration didactic and simulation-based session increases student knowledge in and exposure to urology.

INTRODUCTION: Though urology attracts well-qualified applicants, students are not typically provided exposure to this smaller specialty until later in their medical education. While simulation-based training continues to supplement medical education, there is a lack of programming to teach specialty-specific procedural skills to medical students and those outside the specialty. We report a half-day simulation and didactic-based approach to increase exposure to urology to interested second-year medical students. METHODS: A half-day didactic- and simulation-based session was offered to second-year medical students (N=57). After a didactic-based overview of the specialty performed by urology providers and a surgical educator, the students participated in small-group simulations, including hands-on simulations. The students completed a post-curriculum survey measuring knowledge gains and soliciting feedback on the session. RESULTS: Students were 57.1% Caucasian, 66.7% female, with a mean age of 24.2 years; 80% stated they were potentially interested in pursuing a surgical specialty such as urology prior to the start of the session. Students reported pre- to post-curriculum gains in knowledge (mean=37%) about a career in urology and basic urologic procedures (p<0.001). Participants were also likely to recommend the curriculum to their peers (p<0.001). CONCLUSIONS: Given that exposure to urology in medical school is usually limited and offered later in training, a half-day didactic- and simulation-based experience for second-year students provides an early introduction and experience within the specialty and its common bedside procedures.

Molecular and biological characterization of ϕRs551, a filamentous bacteriophage isolated from a race 3 biovar 2 strain of Ralstonia solanacearum.

A filamentous bacteriophage, designated ϕRs551, was isolated and purified from the quarantine and select agent phytopathogen Ralstonia solanacearum race 3 biovar 2 strain UW551 (phylotype IIB sequevar 1) grown under normal culture conditions. Electron microscopy suggested that ϕRs551 is a member of the family Inoviridae, and is about 1200 nm long and 7 nm wide. ϕRs551 has a genome of 7929 nucleotides containing 14 open reading frames, and is the first isolated virion that contains a resolvase (ORF13) and putative type-2 phage repressor (ORF14). Unlike other R. solanacearum phages isolated from soil, the genome sequence of ϕRs551 is not only 100% identical to its prophage sequence in the deposited genome of R. solanacearum strain UW551 from which the phage was isolated, but is also surprisingly found with 100% identity in the deposited genomes of 10 other phylotype II sequevar 1 strains of R. solanacearum. Furthermore, it is homologous to genome RS-09-161, resulting in the identification of a new prophage, designated RSM10, in a R. solanacearum strain from India. When ORF13 and a core attP site of ϕRs551 were either deleted individually or in combination, phage integration was not observed, suggesting that similar to other filamentous R. solanacearum ϕRSM phages, ϕRs551 relies on its resolvase and the core att sequence for site-directed integration into its susceptible R. solanacearum strain. The integration occurred four hours after phage infection. Infection of a susceptible R. solanacearum strain RUN302 by ϕRs551 resulted in less fluidal colonies and EPS production, and reduced motilities of the bacterium. Interestingly, infection of RUN302 by ϕRs551 also resulted in reduced virulence, rather than enhanced or loss of virulence caused by other ϕRSM phages. Study of bacteriophages of R. solanacearum would contribute to a better understanding of the phage-bacterium-environment interactions in order to develop integrated management strategies to combat R. solanacearum.