Publications by authors named "Simons P"

Article Synopsis
  • * These findings suggest new ways to prevent and treat PCOS and cardiovascular issues, both medically and in broader society.
  • * The research highlights the importance of understanding lipid accumulation for developing effective health strategies.
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We aimed to examine the effects of isocaloric fructose restriction on adipose tissue distribution and serum adipokines. Individuals with BMI >28 kg/m (n = 44) followed a 6-week fructose-restricted diet and were randomly allocated to (double-blind) oral supplementation with fructose (control) or glucose (intervention) powder three times daily. Visceral (VAT) and subcutaneous (SAT) adipose tissue was quantified with MRI.

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  • The study investigates whether adding left atrial appendage ligation to catheter pulmonary vein isolation enhances the treatment of nonparoxysmal atrial fibrillation (AF).
  • It was conducted as a multicenter, randomized clinical trial involving 404 patients, comparing a group that received both treatments to another that only received pulmonary vein isolation.
  • The main objectives were to evaluate the effectiveness of preventing atrial arrhythmias and the safety of the procedures, with follow-up monitoring extending up to 12 months after treatment.
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Purpose: Because of the automation of radiation therapy, competencies of radiation technologists (RTTs) change, and training methods are challenged. This study aims to develop, and pilot test an innovative training method based on lean management principles.

Methods And Materials: A new training method was developed for lung cancer treatment planning (TP).

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Hyperextension of the first metatarsophalangeal joint can lead to a turf toe injury of the plantar plate complex, resulting in significant morbidity for athletes. This article reviews the anatomy, pathophysiology, classification, and imaging findings of turf toe injuries. In turf toe trauma, many different structures can be injured, with the sesamoid-phalangeal ligaments the most common.

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Objective: To assess the association between fructose consumption and serum sex hormone-binding globulin (SHBG), (free) testosterone, and risk of hyperandrogenism in a population-based cohort.

Design: An observational and genetic association study in participants of the UK Biobank (n = 136 384 and n = 383 392, respectively).

Methods: We assessed the relationship of (1) the intake of different sources of fructose (ie, total, fruit, fruit juice, and sugar-sweetened beverages [SSBs]) and (2) rs2304681 (a missense variant in the gene encoding ketohexokinase, used as an instrument of impaired fructose metabolism), with SHBG, total and free testosterone levels, and risk of hyperandrogenism (free androgen index >4.

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Objective: The aim of this paper is to describe the anterolateral approach using an anatomical plate for ankle arthrodesis and to present the first mid-term results with this technique in a high-risk population.

Indications: The indication for arthrodesis of the ankle joint with this described technique is moderate to severe osteoarthritis of the ankle.

Contraindications: In addition to the general contraindications typical of any operation, there is a specific contraindication in cases of active infection of the soft tissues and accompanying osteomyelitis at the ankle.

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Plantar plate positioning has been demonstrated as biomechanically superior. However, some operators remain resentful about the morbidity of the surgical approach. To provide improved plate fixation for first tarsometatarsal joint arthrodesis with respect to the tibialis anterior tendon, a medio-plantar plate was developed.

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Background: Involved lateral lymph nodes (LLNs) have been associated with increased local recurrence (LR) and ipsi-lateral LR (LLR) rates. However, consensus regarding the indication and type of surgical treatment for suspicious LLNs is lacking. This study evaluated the surgical treatment of LLNs in an untrained setting at a national level.

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A 9-year-old female spayed Brittany Spaniel presented for weakness and stumbling, and was diagnosed with severe hypoglycemia. An insulin to glucose ratio was not consistent with insulinoma as a cause for hypoglycemia. Diagnostic imaging (abdominal ultrasound and computed tomography) revealed a large left renal mass and a possible metastatic lesion in the right kidney.

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Introduction: Immunoglobulin A (IgA) is mostly considered as a non-inflammatory regulator at mucosal areas. However, previous work of our group showed that IgA can also be involved in disease pathology, because it provides a potent stimulus to activate neutrophils after crosslinking of surface CD89 (FcaRI), resulting in chronic inflammation and tissue damage. IgA (auto)antibodies and neutrophils are key players in various diseases, including blistering skin diseases and rheumatoid arthritis.

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Background: In humans, the effect of cannabis on ventilatory control is poorly studied, and consequently, the effect of Δ-tetrahydrocannabinol (THC) remains unknown, particularly when THC is combined with an opioid. We studied the effect of THC on breathing without and with oxycodone pretreatment. We hypothesised that THC causes respiratory depression, which is amplified when THC and oxycodone are combined.

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Background: Oliceridine is a G protein-biased µ-opioid, a drug class that is associated with less respiratory depression than nonbiased opioids, such as morphine. The authors quantified the respiratory effects of oliceridine and morphine in elderly volunteers. The authors hypothesized that these opioids differ in their pharmacodynamic behavior, measured as effect on ventilation at an extrapolated end-tidal Pco2 at 55 mmHg, V̇E55.

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Introduction: Management of rectal cancer has advanced, with an increasing use of neoadjuvant chemoradiotherapy (nCRT). This opens options for organ preserving treatment for those with a major response to nCRT. However, the degree of clinical response, based on MRI and post-treatment biopsies, only poorly matches the degree of actual pathological response.

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Article Synopsis
  • A study explored how limiting fructose intake impacts blood pressure in overweight individuals over a six-week period, suggesting potential benefits for diastolic blood pressure.
  • Participants were divided into an intervention group receiving glucose and a control group receiving fructose, with blood pressure and endothelial function measured throughout the trial.
  • Results showed a significant decrease in diastolic blood pressure in the glucose group, particularly among those who consumed high salt diets, indicating a need for further research on fructose's role in hypertension.
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Background And Aims: Coronary artery disease (CAD) is the principal cause of death in individuals with non-alcoholic fatty liver disease (NAFLD). The aim of this study was to use genetic epidemiology to study the association between de novo lipogenesis (DNL), one of the major pathways leading to NAFLD, and CAD risk.

Methods And Results: DNL susceptibility genes were used as instruments and selected using three approaches: 1) genes that are associated with both high serum triglycerides and low sex hormone-binding globulin, both downstream consequences of DNL (unbiased approach), 2) genes that have a known role in DNL (biased approach), and 3) genes that have been associated with serum fatty acids, used as a proxy of DNL.

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Article Synopsis
  • The study examines the role of serum sex hormone-binding globulin (SHBG) as a potential mediator between intrahepatic lipids (IHL) and type 2 diabetes in individuals with non-alcoholic fatty liver disease (NAFLD).
  • Utilizing data from the Maastricht Study with 1,554 participants, researchers assessed the relationship between IHL and type 2 diabetes, with measurements taken using MRI and glucose tolerance tests.
  • Results indicated that SHBG significantly mediates the association, particularly in women (50.9% mediation) compared to men (17.2% mediation), highlighting its importance in understanding the mechanisms linking NAFLD and type 2 diabetes.
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Ketamine is a versatile drug used for many indications and is administered various routes. Here, we report on the pharmacodynamics of sublingual and buccal fast-dissolving oral-thin-films that contain 50 mg of ketamine in a population of healthy male and female volunteers. Twenty volunteers received one or two 50 mg ketamine oral thin films in a crossover design, placed for 10 min sublingually ( = 15) or buccally ( = 5).

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Ketamine is administered predominantly the intravenous route for the various indications, including anesthesia, pain relief and treatment of depression. Here we report on the pharmacokinetics of sublingual and buccal fast-dissolving oral-thin-films that contain 50 mg of -ketamine in a population of healthy male and female volunteers. Twenty volunteers received one or two oral thin films on separate occasions in a randomized crossover design.

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Introduction: Hypoallergenic formulas prepared from hydrolyzed cow's milk proteins are often used for the management of cow's milk allergy (CMA) in infants. In this study, both in vitro assays and an in vivo mouse model for CMA were used to assess the sensitizing and allergenic potential of a newly developed, extensive whey hydrolysate (eWH).

Methods: Gel permeation chromatography was used to characterize the molecular weight distribution of the peptides.

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Rationale, Aims And Objectives: Low-urgent Emergency Department (ED) attendances are a known contributing factor to ED crowding. In the Netherlands, general practitioners (GPs) have direct access to radiology facilities during office hours. Patients with radiographically confirmed traumatic injuries are subsequently referred to the ED.

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Background: Lateral release (LR) is an integral part of surgical correction of hallux valgus. A comparison was made between the open and minimally invasive LR techniques using a dorsal approach. The reliability and safety of the two methods were compared.

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