Publications by authors named "Ashley Saint-Fleur"

Purpose Of Review: Asthma management is a crucial aspect of public health. The landscape of asthma management underwent significant change in the wake of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic. These changes greatly affected existing patients, individuals suffering with undiagnosed illness, providers, and the healthcare system as a whole.

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Background: Neutralizing antibody plays a key role in protecting hosts from invasive pathogens and their virulent components. Current high-throughput assays for antibody screening are based on binding activities. However, those antibodies with high affinity may not have neutralizing activities.

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A shift in the Neonatal Resuscitation Program (NRP) guidelines occurred in 2015 from routine intubation and endotracheal suctioning of all meconium-stained non-vigorous infants towards less aggressive interventions based on response to initial resuscitation. This study aims to examine the impact of this change on outcomes of non-vigorous infants born through meconium-stained amniotic fluid at a level III academic NICU encompassing years before and after the change in guideline. This single-center retrospective study compared NICU therapies and clinical outcomes of 117 non-vigorous newborns pre-guideline implementation to 106 non-vigorous newborns post-guideline implementation.

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Purpose Of Review: This is a summative review of recent trends and novel programming integrated into various clinical settings (i.e. emergency departments, urgent care centres and paediatric clinics) to enhance the quality of care received by paediatric asthma patients Asthma is the most common chronic disease in paediatric patients and despite recognized national management guidelines, implementation and aftercare, especially in the emergency room, remain challenging.

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is the most prevalent pathogen of nosocomial diarrhea. In the United States, over 450,000 cases of infection (CDI), responsible for more than 29,000 deaths, are reported annually in recent years. Because of the emergence of hypervirulent strains and strains less susceptible to vancomycin and fidaxomicin, new therapeutics other than antibiotics are urgently needed.

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Obstructive Sleep Apnea (OSA) is a form of sleep-disordered breathing characterized by upper airway collapse during sleep resulting in recurring arousals and desaturations. However, many aspects of this syndrome in children remain unclear. Understanding underlying pathogenic mechanisms of OSA is critical for the development of therapeutic strategies.

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Race-based experiences of discrimination (EOD) have been documented as a risk factor for substance use among Black individuals, particularly during emerging adulthood, with ethnic identity serving as a protective influence. Our study extends epidemiologic research on EOD and cannabis use by examining this relation in U.S.

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Antibiotic-resistant is an anaerobic Gram-positive bacterium that colonizes the colon and is responsible for more than 29,000 deaths in the United States each year. Hence, infection (CDI) poses an urgent threat to public health. Antibody-mediated neutralization of TcdA and TcdB toxins, the major virulence factors of CDI, represents an effective strategy to combat the disease without invoking antibiotic resistance.

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Background & Aims: toxin A (TcdA) and toxin toxin B (TcdB), the major virulence factors of the bacterium, cause intestinal tissue damage and inflammation. Although the 2 toxins are homologous and share a similar domain structure, TcdA is generally more inflammatory whereas TcdB is more cytotoxic. The functional domain of the toxins that govern the proinflammatory activities of the 2 toxins is unknown.

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Tumor-associated antigens have emerged as important immunotherapeutic targets in the fight against cancer. Germline tumor antigens, such as WT1, Wilms' tumor gene 1, are overexpressed in many human malignancies but have low expression in somatic tissues. Recent vaccination approaches to target WT1 have been hampered by poor in vivo immune potency, likely due to the conserved self-antigen nature of WT1.

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Clostridium difficile infection (CDI) is the most common cause of antibiotic-associated diarrhea and colitis in developed countries. The disease is mainly mediated via two major exotoxins TcdA and TcdB secreted by the bacterium. We have previously developed a novel, potently neutralizing, tetravalent and bispecific heavy-chain-only single domain (VHH) antibody to both TcdA and TcdB (designated as ABA) that reverses fulminant CDI in mice.

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POTE is a primate-specific gene family that encodes cancer testis antigens that contain three domains, although the proteins vary greatly in size. The amino-terminal domain is novel and has three cysteine-rich domains of 37 amino acids. The second and third domains are rich in ankyrin repeats and spectrin-like helices respectively.

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Article Synopsis
  • The POTE gene family, specific to primates, includes 13 genes spread across eight chromosomes and is primarily expressed in cancers rather than normal tissues.
  • Research revealed an actin retroposon insertion that created a new chimeric POTE gene variant, identified in breast cancer cell lines.
  • The findings suggest that retroposon insertions can lead to the evolution of functional human genes, exemplifying how genetic alterations can arise in cancerous conditions.
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To identify new antigens that are targets for the immunotherapy of prostate and breast cancer, we used expressed sequence tag and genomic databases and discovered POTE, a new primate-specific gene family. Each POTE gene encodes a protein that contains three domains, although the proteins vary greatly in size. The NH2-terminal domain is novel and has properties of an extracellular domain but does not contain a signal sequence.

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