Publications by authors named "J Olvera"

Introduction: The present study analysed the mediating role of interactional justice and horizontal trust between transformational leadership and organisational outcomes (i.e., job performance and service quality) at the work team level and the cross-level relationship of team horizontal trust with job performance at the individual level, controlling for work engagement based on the HERO Model.

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Article Synopsis
  • Ulcerative colitis (UC) and Crohn's disease are forms of inflammatory bowel disease (IBD) caused by abnormal immune responses, and the study focuses on the less understood interactions among immune cells and the mechanisms behind the drug vedolizumab.
  • Researchers used a method called CITE-seq on immune cells from UC patients treated with vedolizumab and applied a computational tool (NicheNet) to study immune cell interactions and transcriptional changes.
  • Findings showed that UC patients who responded to vedolizumab had fewer T helper 17 (TH17) cells and different interaction patterns with other immune cells compared to nonresponders, suggesting that understanding cell communications could enhance treatments for IBD.
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Introduction: Crohn's disease (CD) is a major subtype of inflammatory bowel disease (IBD), a spectrum of chronic intestinal disorders caused by dysregulated immune responses to gut microbiota. Although transcriptional and functional changes in a number of immune cell types have been implicated in the pathogenesis of IBD, the cellular interactions and signals that drive these changes have been less well-studied.

Methods: We performed Cellular Indexing of Transcriptomes and Epitopes by sequencing on peripheral blood, colon, and ileal immune cells derived from healthy subjects and patients with CD.

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Poor nutrition is one of the leading causes of non-communicable diseases (NCDs), especially in the WHO Region of the Americas (AMRO). In response, international organisations recommend front-of-pack nutrition labelling (FOPNL) systems that present nutrition information clearly to help consumers make healthier choices. In AMRO, all 35 countries have discussed FOPNL, 30 countries have formally introduced FOPNL, eleven have adopted FOPNL, and seven countries (Argentina, Chile, Ecuador, Mexico, Peru, Uruguay and Venezuela) have implemented FOPNL.

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Tissue-resident memory CD8 T (T) cells are a subset of memory T cells that play a critical role in limiting early pathogen spread and controlling infection. T cells exhibit differences across tissues, but their potential heterogeneity among distinct anatomic compartments within the small intestine and colon has not been well recognized. Here, by analyzing T cells from the lamina propria and epithelial compartments of the small intestine and colon, we showed that intestinal T cells exhibited distinctive patterns of cytokine and granzyme expression along with substantial transcriptional, epigenetic, and functional heterogeneity.

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