Sarah Weischendorff

ORCID: 0000-0002-2364-4445
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Research Areas
  • Hematopoietic Stem Cell Transplantation
  • Oral health in cancer treatment
  • Childhood Cancer Survivors' Quality of Life
  • Neutropenia and Cancer Infections
  • Acute Lymphoblastic Leukemia research
  • Acute Myeloid Leukemia Research
  • Immune Cell Function and Interaction
  • Blood disorders and treatments
  • Gut microbiota and health
  • Growth Hormone and Insulin-like Growth Factors
  • Hematological disorders and diagnostics
  • Bone health and treatments
  • Immune cells in cancer
  • Cancer, Hypoxia, and Metabolism
  • Lung Cancer Research Studies
  • Cancer-related molecular mechanisms research
  • Cancer survivorship and care
  • Clinical Nutrition and Gastroenterology
  • Drug-Induced Hepatotoxicity and Protection
  • Effects of Radiation Exposure
  • Erythrocyte Function and Pathophysiology

Rigshospitalet
2017-2025

Copenhagen University Hospital
2023-2025

University of Copenhagen
2020-2023

ABSTRACT Diagnosing acute graft‐versus‐host disease (aGvHD) following allogeneic hematopoietic stem cell transplantation (HSCT) is challenging due to heterogeneity in interpreting current clinical criteria. Recently, the Mount Sinai Acute GvHD International Consortium (MAGIC) criteria were introduced improve diagnostic consistency. In a study of 117 pediatric patients undergoing HSCT, modified Glucksberg and MAGIC retrospectively compared. The identified significantly more cases...

10.1002/pbc.31502 article EN cc-by-nc-nd Pediatric Blood & Cancer 2025-01-07

Liver toxicity is frequently seen in relation to allogeneic hematopoietic stem cell transplantation (HSCT), but pathogenesis and the risk factors are poorly understood. The purpose of this study was investigate associations between liver toxicity, gastrointestinal levels immune-regulating cytokines during early post-transplantation period. We prospectively included 81 children adults undergoing HSCT after myeloablative conditioning. Alanine aminotransferase (ALT), total bilirubin levels,...

10.1016/j.bbmt.2017.03.021 article EN cc-by-nc-nd Biology of Blood and Marrow Transplantation 2017-03-23

Chemotherapy-induced mucositis increases the risk of blood stream infections (BSI) due to translocation bacteria across intestinal epithelium. Our study investigated if quantitative measures severity, including plasma citrulline (a marker functional enterocytes) and CCL20 (an immune homeostatic chemokine), could identify patients at BSI. A total 106 children with ALL undergoing induction treatment (NOPHO 2008) were included information regarding BSI episodes was collected from patients'...

10.1002/ijc.34639 article EN cc-by-nc-nd International Journal of Cancer 2023-06-30

Abstract Background Early‐onset osteoporosis is a frequent late effect after pediatric hematopoietic stem cell transplantation (HSCT). It remains unknown if physical training can improve bone formation in these patients, as the procedure may cause sustained dysregulation of bone‐forming osteoblast progenitor cells. Objective We aimed to explore resistance on remodeling long‐term survivors HSCT. Procedure In this prospective, controlled intervention study, we included seven HSCT and 15 age‐...

10.1002/pbc.31159 article EN cc-by-nc Pediatric Blood & Cancer 2024-07-02

Abstract Severe intestinal mucositis (IM) increases the risk of bloodstream infections (BSI) and inflammatory toxicity during acute lymphoblastic leukaemia (ALL) induction treatment. However, implications IM in subsequent ALL therapy phases after achieving remission remain unknown. This study investigated relationship between (measured by plasma citrulline chemokine CCL20) development BSI systemic inflammation (reflected C‐reactive protein, CRP) children with high‐dose methotrexate (HDMTX)...

10.1002/ijc.35136 article EN cc-by-nc-nd International Journal of Cancer 2024-08-16

Delayed neutrophil recovery during acute lymphoblastic leukemia (ALL) treatment increases risk of infection and causes delay in chemotherapy. Emerging evidence implicates the gut microbiota reconstitution after We explored interplay between dynamics, including chemoattractants, 51 children with newly-diagnosed ALL. Daily absolute count (ANC), weekly plasma chemokines (CXCL1 CXCL8), granulocyte colony-stimulating factor (G-CSF), fecal samplings were monitored until day 29 ALL induction...

10.1182/bloodadvances.2024013986 article EN cc-by-nc-nd Blood Advances 2024-11-19

Patients undergoing allogeneic hematopoietic stem cell transplantation (HSCT) are challenged by cytotoxic effects of the conditioning regimen, resulting in tissue damage, systemic inflammation, and increased metabolic demands for amino acids to regenerate damaged tissues, reconstitute cells, establish antioxidant defenses. To date, few studies have addressed role plasma acid (PAA) levels during transplantation, it remains unknown if deficiency can aggravate treatment-related morbidity. We...

10.1016/j.bbmt.2019.03.018 article EN cc-by-nc-nd Biology of Blood and Marrow Transplantation 2019-03-22

Although neutropenic fever is frequently observed during chemotherapy, only a minor proportion caused by blood stream infections (BSI). This study investigated measurements of neutrophil chemotaxis as risk markers for BSI in children with acute lymphoblastic leukemia (ALL).The chemokines CXCL1 and CXCL8 were measured weekly 106 ALL induction treatment. Information regarding episodes was collected from the patients' medical records.During treatment, 102 (96%) patients developed profound...

10.1111/ejh.13962 article EN cc-by-nc-nd European Journal Of Haematology 2023-03-23

Abstract Despite chemotherapy-induced intestinal mucositis being a main risk factor for blood stream infections (BSIs), no studies have investigated severity to predict BSI at fever onset during acute leukemia treatment. This study prospectively evaluated in 85 children with leukemia, representing 242 febrile episodes (122 concurrent neutropenia) by measuring plasma levels of citrulline (reflecting enterocyte loss), regenerating islet-derived-protein 3α (REG3α, an antimicrobial peptide) and...

10.1038/s41375-023-02077-7 article EN cc-by Leukemia 2023-11-02

Allogeneic hematopoietic stem cell transplantation (HSCT) is challenged by acute non-infectious toxicities, including sinusoidal obstruction syndrome (SOS), engraftment (ES) and capillary leak (CLS) among others. These complications are thought to be driven a dysfunctional vascular endothelium, but the pathophysiological mechanisms remain incompletely understood, diagnoses purely clinical diagnostic criteria that partly overlapping, limiting possibilities for progress in this field. There...

10.1016/j.trim.2023.101975 article EN cc-by Transplant Immunology 2023-12-18

<title>Abstract</title> Prolonged neutrophil recovery during acute lymphoblastic leukemia (ALL) treatment increases infection risk and delays chemotherapy. Emerging evidence implicates the gut microbiota in reconstitution after We explored interplay between dynamics, including chemoattractants, 51 children with newly-diagnosed ALL. Daily absolute count (ANC), weekly plasma chemokines (CXCL1 CXCL8), granulocyte colony-stimulating factor (G-CSF), fecal samplings were monitored until day 29 ALL...

10.21203/rs.3.rs-4266171/v1 preprint EN cc-by Research Square (Research Square) 2024-04-24

The treatment of childhood cancer is challenged by toxic side effects mainly due to chemotherapy-induced organ damage and infections, which are accompanied severe systemic inflammation. Insulin-like growth factor I (IGF-I) a key regulating in tissue repair. This study investigated associations between the circulating IGF-I levels chemotherapy-related toxicity pediatric acute lymphoblastic leukemia (ALL). In this prospective study, we included 114 patients (age: 1–17 years) with newly...

10.3390/ijms25179582 article EN International Journal of Molecular Sciences 2024-09-04

The aim of the study was to investigate whether high endogenous levels insulin-like growth factor-1 (IGF-1) and its binding protein-3 (IGFBP-3) were related a faster reconstitution different blood cell populations in early phase after allogeneic myeloablative haematopoietic stem transplantation (HSCT).We measured IGF-1 IGFBP-3 by chemiluminescence during first three weeks 35 adult patients undergoing HSCT calculated area under curve divided time (AUC/t) for each patient.Circulating...

10.1111/ejh.13724 article EN European Journal Of Haematology 2021-11-06
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