UPLC-MS/MS determination of suvorexant in urine by a simplified dispersive liquid-liquid micro-extraction followed by ultrasound assisted back extraction from solidified floating organic droplets

In this study, a highly sensitive UPLC-MS/MS assay was developed and validated for the determination of suvorexant in urine sample. A simplified dispersive liquid-liquid microextraction followed by ultrasound assisted back extraction from solidified floating organic droplets was employed for sample preparation. The 20 µL of 1-undecanol and 200 µL of acetonitrile were used as extraction solvent and dispersive solvent, respectively. An ultrasound assisted back extraction step was employed to enable the cleanup procedure compatible with mass spectrometric detection. Acquity CSHTM C18 column with mobile phase composition of 15 mM ammonium acetate: acetonitrile: formic acid (15:85:0.1%; v/v/v) were used for chromatographic separation. The multiple reaction monitoring transition of 451.12 →104.01 and 451.12→186.04 were used for identification and quantification of suvorexant, respectively, whereas 237.06→194.1 was used for IS in mode. The assay demonstrated good linearity in the range of 0.27-1000 ng mL-1 with limit of detection (LOD) and quantification (LOQ) of 0.10 and 0.27 ng mL-1, respectively. Assay validation was performed by following SWGTOX guidelines and all validation results were found to be within acceptable limits. This is the first report of dispersive liquid-liquid microextraction based on solidification of floating organic droplets employed to UPLC-MS/MS for application in biological fluids.Graphical abst...
Source: Journal of Pharmaceutical and Biomedical Analysis - Category: Drugs & Pharmacology Source Type: research

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l V. Vitiello Wrist actigraphy has been used to assess sleep in older adult populations for nearly half a century. Over the years, the continuous raw activity data derived from actigraphy has been used for the characterization of factors beyond sleep/wake such as physical activity patterns and circadian rhythms. Behavioral activity rhythms (BAR) are useful to describe individual daily behavioral patterns beyond sleep and wake, which represent important and meaningful clinical outcomes. This paper reviews common rhythmometric approaches and summarizes the available data from the use of these different approaches in olde...
Source: Sensors - Category: Biotechnology Authors: Tags: Review Source Type: research
Authors: Herring WJ, Ceesay P, Snyder E, Bliwise D, Budd K, Hutzelmann J, Stevens J, Lines C, Michelson D Abstract INTRODUCTION: We evaluated the clinical profile of the orexin receptor antagonist suvorexant for treating insomnia in patients with mild-to-moderate probable Alzheimer's disease (AD) dementia. METHODS: Randomized, double-blind, 4-week trial of suvorexant 10 mg (could be increased to 20 mg based on clinical response) or placebo in patients who met clinical diagnostic criteria for both probable AD dementia and insomnia. Sleep was assessed by overnight polysomnography in a sleep laboratory. The primar...
Source: The Journal of Alzheimers Association - Category: Psychiatry Tags: Alzheimers Dement Source Type: research
With all the advances in modern medicine, it can be easy to wonder if there is a medication to stop drinking. Unfortunately, getting sober from alcohol isn’t as easy as simply taking medication. In addition to medication, therapy is required for the best long-term results, as well as support from loved ones and ongoing aftercare. However, there are some medications to help along in the process to stop withdrawal symptoms, block cravings, and create an aversion to alcohol. It is important to not rely only on medication to stop drinking. A commitment to behavioral therapy, holistic therapy, family involvement, self-ca...
Source: Cliffside Malibu - Category: Addiction Authors: Tags: Alcohol Alcohol Rehab Information Alcoholism Detox Resources for Alcohol and Drugs/Opiates alcohol abuse alcohol dependence alcohol detox alcohol treatment alcohol treatment center alcohol treatment facility Source Type: blogs
Alcohol is a toxic substance that can wreak havoc on the body, brain, central nervous system, internal organs, behavior patterns, emotions, and more. Long-term alcohol abuse can lead to serious damage to the body which, in some cases, can be irreversible and lead to certain chronic conditions. Detoxing from alcohol can present its own set of dangerous withdrawal symptoms and, as such, it is important to know what you need when you are ready to safely detoxify alcohol from your system. Preparation to Detoxify Alcohol When you’re ready to detoxify alcohol from your system, it is important that you and your loved ones ...
Source: Cliffside Malibu - Category: Addiction Authors: Tags: Alcohol Alcohol Rehab Information Alcoholism Detox Resources for Alcohol and Drugs/Opiates alcohol abuse alcohol dependence alcohol detox alcohol treatment alcohol treatment center alcohol treatment facility alcohol use Source Type: blogs
CONCLUSIONS: Sleep disturbances are more frequent in shift workers than DW. Depressive mood and anxiety symptoms were frequently reported in 3S, then EOD. Different shift schedules cab be a determinant of depressive mood and anxiety symptom. PMID: 31942766 [PubMed]
Source: Journal of Clinical Neurology - Category: Neurology Tags: J Clin Neurol Source Type: research
Condition:   Autism Spectrum Disorder Interventions:   Drug: Melatonin;   Drug: Placebo Sponsor:   Neurim Pharmaceuticals Ltd. Not yet recruiting
Source: ClinicalTrials.gov - Category: Research Source Type: clinical trials
Sleep disturbances such as insomnia are extremely common, especially in women after menopause. According to data from the National Institutes of Health, sleep disturbance varies from 16% to 42% before menopause, from 39% to 47% during perimenopause, and from 35% to 60% after menopause. Insomnia is a serious medical problem defined by frequent difficulty falling or staying asleep that impacts a person’s life in a negative way. Hormone changes around menopause can lead to sleep problems for many reasons, including changing sleep requirements, increased irritability, and hot flashes. What menopausal women eat could have...
Source: Harvard Health Blog - Category: Consumer Health News Authors: Tags: Fatigue Food as medicine Healthy Eating Menopause Nutrition Sleep Source Type: blogs
ConclusionsThese results indicate that the use of a body scan mindfulness meditation in CBTI may have an additional positive effect on sleep, above and beyond traditional CBTI techniques.
Source: Mindfulness - Category: Psychiatry & Psychology Source Type: research
Conclusions: Independent of demographic variables, menopausal transition, postmenopause, and four menopausal symptoms (mood swing, depressive mood, palpitations, and urinary tract infection) increase the risk of depressive symptoms. PMID: 31951757 [PubMed - as supplied by publisher]
Source: Climacteric - Category: Geriatrics Authors: Tags: Climacteric Source Type: research
AbstractPurpose of ReviewThe purpose of this review article is to provide an overview of sleep and pulmonary comorbidities in patients with psoriasis and summarize important recent findings.Recent FindingsEvidence continues to show that patients with psoriasis experience greater chronic sleep impairment when compared to healthy counterparts. In addition to other comorbidities seen in psoriasis patients, including cardiovascular disease, obesity, and diabetes, obstructive sleep apnea and chronic obstructive pulmonary disease have increased frequency in this population.SummarySleep and pulmonary comorbidities in psoriasis co...
Source: Current Dermatology Reports - Category: Dermatology Source Type: research
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