Publications by authors named "B G Callahan"

A modified enzyme fragment complementation assay has been designed and validated as a turn-on biosensor for nucleic acid detection in dilute aqueous solution. The assay is target sequence-agonistic and uses fragments of NanoBiT, the split luciferase reporter enzyme, that are esterified enzymatically at their C-termini to steramers, sterol-linked oligonucleotides. The Drosophila hedgehog autoprocessing domain, DHhC, serves as the self-cleaving enzyme for the NanoBiT-steramer bioconjugations.

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  • - The Dépistage Cognitif de Québec (DCQ) was created to detect atypical dementia, addressing the lack of specific cognitive screening tools and reducing delays in diagnosis and care.
  • - A study in Canada and the U.S. involving 260 English-speaking participants validated the English version of the DCQ, showing strong correlations with other cognitive assessments and high reliability across testing conditions.
  • - The English DCQ effectively identifies various atypical dementias, making it a quick, 20-minute alternative to comprehensive neuropsychological tests, with standardized scores based on age and education levels.
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  • * Researchers conducted a retrospective case-control study and utilized multivariable regression to find significant risk factors, resulting in a nomogram for prediction.
  • * Key findings highlighted that specific medications like heparin and certain blood product transfusions were significant risk factors for developing ACS, with the proposed risk calculator aiding in identifying high-risk patients.
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Objective: To identify direct and indirect associations between PCEs and social support to emotion regulation outcomes in adults with ADHD.

Method: Adults with ADHD ( = 81) reported PCEs, current social support, and emotion regulation. Conditional effects modeling examined the direct and indirect relationships between PCEs and emotion dysregulation through social support.

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Salmonella enterica Serovar Typhimurium (Salmonella) and its bacteriophage P22 are a model system for the study of horizontal gene transfer by generalized transduction. Typically, the P22 DNA packaging machinery initiates packaging when a short sequence of DNA, known as the pac site, is recognized on the P22 genome. However, sequences similar to the pac site in the host genome, called pseudo-pac sites, lead to erroneous packaging and subsequent generalized transduction of Salmonella DNA.

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