Publications by authors named "M Smidt"

Background: In line with the trend towards minimally invasive, patient-tailored treatment, a selected group of patients with an in-breast tumour recurrence (IBTR) is treated by repeat breast-conserving treatment (BCT). To select eligible patients for repeat BCT, a reliable pre-operative work-up is essential. This study reports on the role of F-FDG PET/CT in detecting synchronous regional and distant metastases in patients with IBTR.

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Background: The presence of a DCIS component accompanying invasive breast cancer (IBC) is associated with a higher rate of primary mastectomy compared to IBC without DCIS. After neoadjuvant systemic therapy (NST), HER2+ IBC patients show high response rates, allowing for increasing breast-conserving surgery rates. The aim of this study was to examine surgical trends after NST in a Dutch nationwide HER2+ cohort, and the influence of a DCIS component on mastectomy rate.

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Introduction: The human gut microbiota influence critical functions including the metabolism of nutrients, xenobiotics, and drugs. Gut microbial β-glucuronidases (GUS) enzymes facilitate the removal of glucuronic acid from various compounds, potentially affecting anti-cancer drug efficacy and reactivating carcinogens. This review aims to comprehensively analyze and summarize studies on the role of gut microbial GUS in cancer and its interaction with anti-cancer treatments.

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Article Synopsis
  • The study investigates the interactions between the chemotherapy drug capecitabine (CAP) and gut microbiota in colorectal cancer patients, focusing on how these interactions may affect treatment side effects.
  • Research involved a cohort of 56 patients, analyzing stool samples and using advanced sequencing techniques to observe changes in gut microbial composition during CAP treatment.
  • Findings indicate that CAP alters gut bacteria, promoting genes related to vitamin K2 production, which appears to protect against drug toxicity, suggesting potential for microbiome profiling to predict chemotherapy side effects.
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Background: Parkinson's disease is characterized by a progressive loss of dopaminergic neurons in the nigrostriatal pathway, leading to dopamine deficiency and motor impairments. Current treatments, such as L-DOPA, provide symptomatic relief but result in off-target effects and diminished efficacy over time. This study explores an alternative approach by investigating the activation of tyrosine hydroxylase, the rate-limiting enzyme in dopamine synthesis.

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