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μ-opioid receptor availability is associated with sex drive in human males
The endogenous mu-opioid receptor (MOR) system modulates a multitude of social and reward-related functions, and exogenous opiates also influence sex drive in humans and animals. Sex drive shows substantial variation across ...
Association of CNR1 gene and cannabinoid 1 receptor protein in the human brain
We aimed to integrate genomic mapping from brain mRNA atlas with the protein expression from positron emission tomography (PET) scans of type 1 cannabinoid (CB1) receptor and to compare the predictive power of CB1 receptor ...
Obesity risk is associated with brain glucose uptake and insulin resistance
<p><strong>Objective: </strong>To investigate whether alterations in brain glucose uptake (BGU), insulin action in the brain-liver axis and whole-body insulin sensitivity occur in young adults in pre-obese state.</p><p>< ...
Novel Effects of the Gastrointestinal Hormone Secretin on Cardiac Metabolism and Renal Function
<p>The cardiac benefits of gastrointestinal hormones have been of interest in recent years. The aim of this study was to explore the myocardial and renal effects of the gastrointestinal hormone secretin in the GUTBAT trial (NCT03290846). A placebo-controlled crossover study was conducted on 15 healthy males in fasting conditions, where subjects were blinded to the intervention. Myocardial glucose uptake was measured with [<sup>18</sup>F]2-fluoro-2-deoxy-D-glucose ([<sup>18</sup>F]FDG) positron emission tomography. Kidney function was measured with [<sup>18</sup>F]FDG renal clearance and estimated glomerular filtration rate (eGFR). Secretin increased myocardial glucose uptake compared to placebo (secretin vs. placebo, mean + standard deviation, 15.5 ± 7.4 vs. 9.7 ± 4.9 μmol/100g/min, 95% confidence interval (CI) [2.2, 9.4], p=0.004). Secretin also increased [<sup>18</sup>F]FDG renal clearance (44.5 ± 5.4 vs. 39.5 ± 8.5 ml/min, 95%CI[1.9, 8.1], p=0.004) and eGFR was significantly increased from baseline after secretin, compared to placebo (17.8 ± 9.8 vs. 6.0 ± 5.2 Δml/min/1.73m<sup>2</sup>, 95%CI[6.0, 17.6], p=0.001). Our results implicate that secretin increases heart work and renal filtration, making it an interesting drug candidate for future studies in heart and kidney failure.</p>...
Circulating neurofilament is linked with morbid obesity, renal function, and brain density
Neurofilament light chain (NfL) is a novel biomarker reflecting neuroaxonal damage and associates with brain atrophy, and glial fibrillary acidic protein (GFAP) is a marker of astrocytic activation, associated with several ...
[11C]carfentanil PET imaging for studying the peripheral opioid system in vivo: effect of photoperiod on mu-opioid receptor availability in brown adipose tissue
<p><b>Purpose </b>Photoperiod determines the metabolic activity of brown adipose tissue (BAT) and affects the food intake and body mass of mammals. Sympathetic innervation of the BAT controls thermogenesis and facilitates ...