Publications by authors named "Anna L Emanuel"

Acute urinary retention is a common problem, mainly among elderly men. The first step in the treatment is the placement of an indwelling urinary catheter. It's common practice to remove the catheter after a short period of time to observe if spontaneous micturition returns.

View Article and Find Full Text PDF

Objective: In mice fed a high-fat diet, impairment of insulin signaling in endothelium is an early phenomenon that precedes decreased insulin sensitivity of skeletal muscle, adipose tissue, and liver. We assessed in humans whether short-term overfeeding affects insulin-induced microvascular recruitment in skeletal muscle and adipose tissue before changes occur in glucose uptake and lipolysis. Approach and Results: Fifteen healthy males underwent a hypercaloric and subsequent hypocaloric diet intervention.

View Article and Find Full Text PDF

Sodium-glucose cotransporter 2 inhibitors (SGLT2i) improve hard renal outcomes in type 2 diabetes. This is possibly explained by the fact that SGLT2i normalize the measured glomerular filtration rate (mGFR) by increasing renal vascular resistance, as was shown in young people with type 1 diabetes and glomerular hyperfiltration. Therefore, we compared the renal hemodynamic effects of dapagliflozin with gliclazide in type 2 diabetes.

View Article and Find Full Text PDF
Article Synopsis
  • Contrast-enhanced ultrasound (CEUS) is an advanced imaging technique that quantifies blood volume and flow in vital organs using microbubble contrast agents.
  • Despite technological advancements and greater familiarity among healthcare professionals, there are no standardized guidelines for its use in quantifying tissue perfusion in humans, which limits its application in research.
  • This review aims to outline the methodology of CEUS, focusing on factors that affect its performance and data interpretation, while also addressing specific challenges and benefits related to imaging different organs.
View Article and Find Full Text PDF

Objective: To determine the ability of renal contrast-enhanced ultrasonography (CEUS) to detect acute drug-induced changes in renal perfusion (using the glucagon-like peptide (GLP)-1 receptor agonist exenatide and nitric oxide [NO]-synthase inhibitor L-N -monomethyl arginine [l-NMMA]), and assess its correlation with gold standard-measured effective renal plasma flow in humans.

Methods: In this prespecified exploratory analysis of a placebo-controlled cross-over study, renal hemodynamics was assessed in 10 healthy overweight males (aged 20-27 years; BMI 26-31 kg/m ) over two separate testing days; during placebo (isotonic saline) and subsequent exenatide infusion (Day-A), and during l-NMMA, and subsequent exenatide plus l-NMMA infusion (Day-B). Renal cortical microvascular blood flow was estimated following microbubble infusion and CEUS destruction-refilling-sequences.

View Article and Find Full Text PDF

Objective: Cognitive impairments in type 1 diabetes may result from hyperglycemia-associated cerebral microangiopathy. We aimed to identify cerebral microangiopathy and skin microvascular dysfunction-as a surrogate marker for generalized microvascular function-as predictors of cognitive performance over time.

Methods: In this prospective cohort study, 25 type 1 diabetes patients with proliferative retinopathy and 25 matched healthy controls underwent neurocognitive testing at baseline and after follow-up (3.

View Article and Find Full Text PDF

Aims: In type 2 diabetes impaired insulin-induced muscle perfusion is thought to contribute to reduced whole-body glucose uptake. In this study, we examined the effects of iloprost, a stable prostacyclin analogue, on insulin-induced muscle capillary recruitment and whole-body glucose uptake.

Materials And Methods: In a randomized cross-over design, 12 type 2 diabetes patients (age, 55 [46-69] years; BMI, 33.

View Article and Find Full Text PDF

Objective: This study investigated whether the relationship between neuropathy and microvascular dysfunction in patients with type 2 diabetes is independent of diabetes-related factors. For this purpose, we compared skin microvascular function in patients with type 2 diabetes with that of patients with cryptogenic axonal polyneuropathy (CAP), a polyneuropathy of unknown etiology.

Research Design And Methods: Cross-sectional information was collected from 16 healthy controls (HCs), 16 patients with CAP, 15 patients with type 2 diabetes with polyneuropathy (DPN), and 11 patients with type 2 diabetes without polyneuropathy.

View Article and Find Full Text PDF

Unlabelled: After food ingestion, macronutrients are transported to and stored in the skeletal muscle and adipose tissue. They can be subsequently used as an energy source in times of energy deprivation. Uptake of these nutrients in myocytes and adipocytes depends largely on adequate tissue perfusion.

View Article and Find Full Text PDF