Publications by authors named "N J E Haverkate"

Background Aims: The success of allogeneic hematopoietic cell transplantation (HCT) as therapy for hematologic conditions is negatively impacted by the occurrence of graft-versus-host disease (GVHD). Tissue damage, caused, for example, by chemotherapy and radiotherapy, is a key factor in GVHD pathogenesis. Innate lymphoid cells (ILCs) are important mediators of tissue repair and homeostasis.

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Type 3 innate lymphoid cells (ILC3) are important in tissue homeostasis. In the gut, ILC3 repair damaged epithelium and suppress inflammation. In allogeneic hematopoietic cell transplantation (HCT), ILC3 protect against graft-versus-host disease (GvHD), most likely by restoring tissue damage and preventing inflammation.

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3-Amino-2-arylcarboxamido-thieno[2-3-]pyridines have been previously described as having potent anti-proliferative activity against MDA-MB-231 and HCT116 cancer cell lines. The mechanism by which these molecules prevent cancer cell growth is proposed to be through interfering with phospholipid metabolism via inhibition of PI-PLC, along with other cellular processes. Previously, 5-cinnamyl derivatives of these thieno[2-3-]pyridines have been shown to have enhanced anti-proliferative activity compared to compounds lacking this moiety, indicating a tethered aromatic ring is important for this western region of the pharmacophore.

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Background: Patients with haematological malignancies have impaired antibody responses to SARS-CoV-2 vaccination. We aimed to investigate whether a fourth mRNA COVID-19 vaccination improved antibody quantity and quality.

Methods: In this cohort study, conducted at 5 sites in the Netherlands, we compared antibody concentrations 28 days after 4 mRNA vaccinations (3-dose primary series plus 1 booster vaccination) in SARS-CoV-2 naive, immunocompromised patients with haematological malignancies to those obtained by age-matched, healthy individuals who had received the standard primary 2-dose mRNA vaccination schedule followed by a first booster mRNA vaccination.

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Article Synopsis
  • Disruption of gut bacteria often occurs in patients undergoing allogeneic hematopoietic cell transplantation (HCT), especially those with graft-versus-host disease (GVHD), but donor fecal microbiota transplantation (FMT) can help restore gut diversity and alleviate GVHD symptoms.
  • This study focused on analyzing the fungal community (mycobiota) in the stools of HCT patients with steroid-refractory GVHD and healthy donors, finding significant differences in fungal DNA between the two groups.
  • While the donor's mycobiota varied over time, the study did not find evidence of fungal transfer from donors to recipients, leading to advancements in the methodology for analyzing mycobiota alongside bacteria in future research.
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