Publications by authors named "David Rosales"

A protective HIV-1 vaccine has been hampered by a limited understanding of how B cells acquire neutralizing activity. Our previous vaccines expressing two different HIV-1 envelopes elicited robust antigen specific serum IgG titers in 20 rhesus macaques; yet serum from only two animals neutralized the autologous virus. Here, we used high throughput immunoglobulin receptor and single cell RNA sequencing to characterize the overall expansion, recall, and maturation of antigen specific B cells longitudinally over 90 weeks.

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Introduction: Head and Neck Cancer Awareness and Screening Programs (HNCASP) are popular community outreach events hosted by academic and community otolaryngology departments. However, long-term follow-up of participants is lacking.

Patients And Methods: Participants of a HNCASP held at an academic cancer center prospectively filled out demographic and risk factor surveys followed by HNC screening examination.

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An internal employee challenge competition is a way to promote staff engagement and generate innovative business solutions. This Spotlight on Leadership focuses on the approach that a large not-for-profit healthcare organization, the Visiting Nurse Service of New York, took in designing and executing an innovation challenge. The challenge leveraged internal staff expertise and promoted wide participation.

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Article Synopsis
  • The hexokinase gene from Trypanosoma cruzi was successfully cloned, sequenced, and expressed in E. coli, showing 67% identity with Trypanosoma brucei's hexokinase.
  • The enzyme has a predicted mass of about 50 kDa and features a peroxisome-targeting signal, indicating its role as a glycosomal protein, while existing mainly in a tetrameric form upon purification.
  • Kinetic analysis revealed that the recombinant hexokinase has higher K(m) values for glucose and ATP compared to the natural enzyme, with both showing no activity with fructose, and differing responses to inhibitors such as glucose 6-phosphate and inorganic pyrophosphate.
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