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PubMed Journals Articles About "Administration Of Hydrocortisone In Young Healthy Male Volunteers" RSS

11:36 EST 22nd January 2020 | BioPortfolio

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Showing "Administration Hydrocortisone Young Healthy Male Volunteers" PubMed Articles 1–25 of 15,000+

Increased systemic endothelial-dependent microvascular reactivity after ingestion of a high-carbohydrate snack in young, healthy volunteers.

This study evaluated the acute effect of a high-carbohydrate snack (HCS) on systemic microvascular function of healthy, young volunteers, using laser speckle contrast imaging (LSCI).


Single dose testosterone administration increases impulsivity in the intertemporal choice task among healthy males.

Circulating levels of testosterone have been positively associated with impulsivity. The present study investigates the effect of testosterone administration on impulsivity in an intertemporal choice task, where participants are given a choice between smaller-sooner rewards and larger-later rewards. Healthy young male participants (n = 111) received a single-dose of 150 mg testosterone gel in a double-blind, placebo-controlled, between-subjects design. At 180 min post-administration, participants pe...

Cefuroxime pharmacokinetics and pharmacodynamics for intravenous dosage regimens with 750 mg or 1500 mg doses in healthy young volunteers.

Cefuroxime is an important antibiotic to treat several serious infections. Rapid elimination through the kidneys and the variation in MICs of various susceptible pathogens such as and give rise to dosing issues, especially in otherwise healthy patients. To investigate the probability of target attainment (PTA) for obtaining the optimal dosage regimens for cefuroxime in healthy young people. Two weeks apart 750 and 1500 mg cefuroxime were administered as an intravenous bolus to 20 healthy volunteers (mea...


Effects of hydrocortisone on autobiographical memory retrieval in patients with posttraumatic stress disorder and borderline personality disorder: the role of childhood trauma.

In a previous study, we found that patients with posttraumatic stress disorder (PTSD) and borderline personality disorder (BPD) showed better autobiographical memory (AM) retrieval after hydrocortisone administration than after placebo administration. Here we investigate the neural correlates of AM retrieval after hydrocortisone administration in patients with PTSD or BPD. We recruited 78 female participants for this placebo-controlled crossover study: 40 healthy controls, 20 patients with PTSD, and 18 pati...

Cortisol affects pain sensitivity and pain-related emotional learning in experimental visceral but not somatic pain: a randomized controlled study in healthy men and women.

Despite growing interest in the role of stress mediators in pain chronicity, the effects of the stress hormone cortisol on acute pain remain incompletely understood. In a randomized, double-blind, placebo-controlled study with N = 100 healthy volunteers, we tested the effects of oral hydrocortisone (20 mg) in 2 widely used pain models for the visceral and somatic modality. Salivary cortisol was increased in the hydrocortisone group (time × group: P < 0.001). For the visceral modality, assessed using pressu...

Evaluation of gender difference in pharmacokinetics of Candesartan cilexetil in the fasted state by RP-HPLC: A single dose comparative study.

To compare the pharmacokinetics of candesartan cilexetil in healthy male and female volunteers in order to identify possible influence of gender and to improve therapeutic outcomes, an HPLC method for the quantification of candesartan cilexetil was developed and validated. Total of 16 volunteers (8 male and 8 female) were registered. Candesartan cilexetil 16 mg was administered orally to all the volunteers and blood samples were collected at different time intervals between 0-72 hours. Plasma was separated ...

Effects of hydrocortisone administration on leptin and adiponectin synthesis in dogs.

To determine effects of hydrocortisone administration on serum leptin and adiponectin concentrations, abdominal fat distribution, and mRNA expression of leptin and adiponectin in abdominal adipose tissue of dogs.

Acute effects of essential oil blend containing phlai oil on mood among healthy male volunteers: Randomized controlled trial.

Background Essential oil blend (ESOB) containing Zingiber montanum or Phlai and Zingiber tenuiscapus oils as the major components has high levels of terpenes such as sabinene, terpinene, terpinolene, and terpine-4-ol. Phlai is well known for its analgesic property, but its effects on mood remain unclear. This study aimed to investigate the acute effects of inhaling the ESOB containing phlai essential oils on mood and stress among healthy volunteers. Methods A prospective, randomized, double-blinded, control...

The acute effects of hydrocortisone on cardiac electrocardiography, action potentials, intracellular calcium, and contraction: The role of protein kinase C.

Hydrocortisone exerts adverse effects on various organs, including the heart. This study investigated the still unclear effects of hydrocortisone on electrophysiological and biochemical aspects of cardiac excitation-contraction coupling. In guinea pigs' hearts, hydrocortisone administration reduced the QT interval of ECG and the action potential duration (APD). In guinea pig ventricular myocytes, hydrocortisone reduced contraction and Ca transient amplitudes. These reductions and the effects on APD were pre...

The pharmacodynamic effects of a dopamine-somatostatin chimera agonist on the cardiovascular system.

The quantification of the effect of pharmacological treatment on the cardiovascular system is complicated due to the high level of inter-individual and circadian variability. Recently, a dopamine-somatostatin chimera, BIM23B065, was under investigation to concurrently target the somatostatin and dopamine D2 receptors for the treatment of neuroendocrine tumors. However, both dopamine and somatostatin interact with different components of the cardiovascular system. This study established the response of the h...

Response of peripheral arterial pulse wave velocity to acute exercise in patients after recent myocardial infarction and healthy controls.

Many studies found increased central arterial stiffness and poor endothelial function in patients with coronary artery disease (CAD). Acute exercise has been shown to decrease peripheral pulse wave velocity (pPWV) in young healthy volunteers. We hypothesized the response to acute exercise to be diminished in CAD patients compared to healthy young (HY) and age-matched (HAM) controls.

Testosterone replacement in young male cancer survivors: A 6-month double-blind randomised placebo-controlled trial.

Young male cancer survivors have lower testosterone levels, higher fat mass, and worse quality of life (QoL) than age-matched healthy controls. Low testosterone in cancer survivors can be due to orchidectomy or effects of chemotherapy and radiotherapy. We have undertaken a double-blind, placebo-controlled, 6-month trial of testosterone replacement in young male cancer survivors with borderline low testosterone (7-12 nmol/l).

Why Knowing Healthy Controls Matters.

Although healthy volunteers often serve as controls or primary participants in neuroscience research, they are usually less rigorously screened than patients, which can have far-reaching implications for interpretation of study results. Although this issue has long been recognized, it is rarely discussed in the research literature. This article examines how the rigorous screening and characterization of healthy volunteers is key for quality research.

'Becoming-with' a repeat healthy volunteer: Managing and negotiating trust among repeat healthy volunteers in commercial clinical drug trials.

Recent sociological research has raised important sociological and ethical questions about the role of financial rewards in terms of healthy volunteer involvement in clinical trials. Research suggests that it would be parochial to assume financial rewards alone are sufficient to explain repeat healthy volunteering. This paper explores other factors that might explain repeat healthy volunteering behaviours in phase I clinical drug trials. Drawing on qualitative research with healthy volunteers, the paper arg...

Short-term effect of pharmacologically induced alterations in testosterone levels on common blood biomarkers in a controlled healthy human model.

Testosterone deficiency in males is associated with serious comorbidities such as cardiovascular disease, diabetes type two, and also an increased risk of premature death. The pathogenetic mechanism behind this association, however, has not yet been clarified and is potentially bidirectional. The aim of this clinical trial was to gain insight into the short-term effect of changes in testosterone on blood analytes in healthy young men. Thirty healthy young male volunteers were recruited and monitored in our ...

Cardiac arrest in a young healthy male patient secondary to kratom ingestion: is this 'legal high' substance more dangerous than initially thought ?

Kratom is a psychoactive herb that has stimulant properties at low doses and has opioid-like properties at higher doses. It has been used for centuries in southeast Asia as a stimulant but has gained increasing popularity as a substitute for opioids in western countries as it is easily available. As most cases of kratom use involve other drugs too, the Food and Drug Administration (FDA) has stopped short of restricting kratom due to difficulty in assessing the adverse effects of kratom alone. We present the...

Budesonide use and misuse in sports: elimination profiles of budesonide and metabolites after intranasal, high-dose inhaled and oral administrations.

Budesonide (BUD) is a glucocorticoid (GC) widely used in therapeutics. In sports, the World Anti-doping Agency (WADA) controls the use of GCs, and WADA-accredited laboratories use a reporting level of 30 ng/mL for 6β-hydroxy-budesonide (6βOHBUD) to detect the systemic administration of BUD. In the present work, we examined the urinary excretion profile of 6βOHBUD, BUD, and 16α-hydroxy-prednisolone (16αOHPRED) after intranasal (INT), inhaled (INH) (at high doses) and oral administrations in male and fem...

Effects of short-term hyperoxia on sytemic hemodynamics, oxygen transport, and microcirculation: An observational study in patients with septic shock and healthy volunteers.

To characterize the microvascular effects of a brief period of hyperoxia, in patients with septic shock and in healthy volunteers.

Using of ¹⁸F-FDG to evaluate the effect of traumatic olfactory nerve injury on drug delivery through the nasal-brain pathway: a PET-MRI pilot study.

This study evaluated the effect of traumatic olfactory nerve injury on drug delivery through the nasal-brain pathway via the instillation of ¹⁸F-FDG at the olfactory cleft. Seven healthy volunteers and 5 patients with traumatic dysosmia were enrolled in the study. Subjects were all instilled with ¹⁸F-FDG on each side of the olfactory cleft under endoscopy. After 12 hours, a PET/MR scan was performed to track the metabolism pathway of ¹⁸F-FDG. Then, we compared the diameter of the olfactory bulb and...

UPLC-MS/MS method for gemfibrozil determination in plasma with application to a pharmacokinetic study in healthy Brazilian volunteers.

Gemfibrozil (GFZ) is a derivative of fibric acid and is used in the treatment of dyslipidemia. GFZ may affect the metabolism of various drugs, including statins, by inhibiting the sinusoidal influx transporter OATP1B1 and also CYP2C9 and CYP2C8 enzymes. This study presents the development and validation of a rapid, simple, sensitive and reproducible method of GFZ analysis in human plasma using UPLC-MS/MS. The method was applied in a pharmacokinetic study following administration of multiple doses of 600 m...

Safety, Tolerability, and Pharmacokinetics of the β-Site Amyloid Precursor Protein-Cleaving Enzyme 1 Inhibitor Verubecestat (MK-8931) in Healthy Elderly Male and Female Subjects.

β-site amyloid precursor protein-cleaving enzyme 1 (BACE1) is required for the production of β-amyloid peptides, which are implicated in the etiology of Alzheimer's disease. The safety and pharmacokinetics of the BACE1 inhibitor verubecestat have previously been studied in young adults aged 19-45 years. In this randomized, placebo-controlled, phase I study (protocol MK-8931-006), we investigated the safety, tolerability, and pharmacokinetics of a single dose (100 mg) or multiple doses (30, 80, and 120 ...

The influence of taurine and L-carnitine on 6 β-hydroxycortisol/cortisol ratio in human urine of healthy volunteers.

Background Cytochrome P450s (CYPs, EC 1.14.14.1) are the main enzymes of drug metabolism. The functional significance of CYPs also includes the metabolism of foreign chemicals and endogenic biologically active compounds. The CYP3A4 isoform contributes to the metabolism of about half of all marketed medicinal preparations. The aim of this study was to investigate the effects of two biologically active compounds: 2-aminoethane-sulfonic acid (taurine) and 3-hydroxy-4-trimethylaminobutyrate (L-carnitine) on uri...

Early and late effects of remote ischemic preconditioning on spirometry and gas exchange in healthy volunteers.

Remote ischemic preconditioning (RIP) may protect remote organs from ischemia-reperfusion-injury (IRI) in surgical and non-surgical patients. There are few data available on RIP and lung function, especially not in healthy volunteers. The null-hypothesis was tested that RIP does not have an effect on pulmonary function when applied on healthy volunteers that were breathing spontaneously and did not experience any intervention. After approval of the Ethics Committee and informed consent of the study subjects...

Effect of hot arm and foot bath on heart rate variability and blood pressure in healthy volunteers.

Background Though hot arm and foot bath (HAFB) is widely used, a precise physiological response is not reported. Hence, the present study was conducted to evaluate the effect of HAFB on heart rate variability (HRV) and blood pressure (BP) in healthy volunteers. Materials and Methods Sixteen healthy male volunteers' aged 23.81 ± 5.27 (mean ± standard deviation) years were recruited. All the subjects underwent only one session of HAFB (104-degree Fahrenheit) for the duration of 20 min. Assessments...

Apremilast and tofacitinib exert differential effects in the humanized mouse model of alopecia areata.

By using the humanized mouse model of AA we recently compared the therapeutic effects of the PDE4 inhibitor, apremilast, which has been discussed as being a candidate AA therapeutic (1) and the JAK inhibitor, tofacitinib, which has emerged as a promising new AA treatment (2) Three mm xenotransplants of hair-bearing scalp skin from three healthy male volunteers (aged 32, 34 and 44 years) who had undergone cosmetic procedures were included in the study. Twelve specimens from two volunteers were grafted to eig...


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