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Acute and long-term effects of psilocybin on energy balance and feeding behavior in mice

ABSTRACT: Acute and long-term effects of psilocybin on energy balance and feeding behavior in mice

PROVIDER: PRJNA862729 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR20665100_1.fastq.gz	Fastqsanger.gz
	SRR20665100_2.fastq.gz	Fastqsanger.gz
	SRR20665200_1.fastq.gz	Fastqsanger.gz
	SRR20665200_2.fastq.gz	Fastqsanger.gz
	SRR20665101_1.fastq.gz	Fastqsanger.gz

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Acute and long-term effects of psilocybin on energy balance and feeding behavior in mice

Project description:Psilocybin, and other serotonergic psychedelics, have re-emerged as therapeutics for neuropsychiatric disorders, including addiction. Psilocybin induces long-lasting effects on behavior, likely due to its profound ability to alter consciousness and augment neural connectivity and plasticity. Impaired synaptic plasticity in obesity contributes to ‘addictive-like’ behaviors, including heightened motivation for palatable food, and excessive food seeking and consumption. Here, we evaluate the effects of psilocybin on feeding behavior, energy metabolism and as a weight-lowering agent in mice. We demonstrate that a single dose of psilocybin substantially alters the prefrontal cortex transcriptome but has no acute or long-lasting effects on food intake or body weight in diet-induced obese mice or in genetic mouse models of obesity. Similarly, sub-chronic microdosing of psilocybin has no metabolic effects in obese mice and psilocybin does not augment glucagon-like peptide-1 (GLP-1) induced weight loss or enhance diet-induced weight loss. A single high dose of psilocybin reduces sucrose preference but fails to counter binge-like eating behavior. Although these preclinical data discourage clinical investigation, there may be nuances in the mode of action of psychedelic drugs that are difficult to capture in rodent models, and thus require human evaluation to uncover.

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Isolating Independent Effects of Diet/Energy Balance and Body Weight on Behavior and Metabolic Health

Project description:Associated with numerous metabolic and behavioral abnormalities, obesity is classified by metrics reliant on body weight (such as body mass index). However, overnutrition is the common cause of obesity, and may independently contribute to these obesity-related abnormalities. The goal of this study is to isolate ‘diet/energy balance’ effects independent from ‘body weight’ effects on various metabolic and behavioral parameters using the Diet Switch feeding paradigm in mice. [We conducted] unbiased gene expression analysis of the nutrient-sensing circumventricular hypothalamus [using RNA-seq]. Remarkably, only two genes responded to diet/energy balance (neuropeptide y [npy] and agouti-related peptide [agrp]), while others were related only to body weight. Furthermore, linear regression models revealed that npy and agrp showed similar modifiability by diet/energy balance and body weight compared to electroencephalographic-measured sleep/wake behavior.

2018-05-17 | GSE104709 | GEO

Isolating Independent Effects of Diet/Energy Balance and Body Weight on Behavior and Metabolic Health

Project description:Isolating Independent Effects of Diet/Energy Balance and Body Weight on Behavior and Metabolic Health

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Gene expression atlas of energy balance brain regions

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Bovine granulosa cells of dominant follicles at 60 days postpartum; effect of negative energy balance on transcriptome

Project description:Granulosa cells of dominant follicles originating from dairy cows with severe negative energy balance (BHBH) or mild negative energy balance (BHBL) were compared. Mild negative energy balance (BHBL) is the reference. Two conditions experiment (BHBH and BHBL); Four pools of 3 biological replicates for each group (total = 12 cows for each group); Two technical replicates per pool (dye-swap).

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Gene expression atlas of energy balance brain regions

Project description:This project involved bulk-RNAseq analysis of mouse brain regions involved in energy balance. Two mouse embryonic stem cell controls were included

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Acute and long-term effects of psilocybin on energy balance and feeding behavior in mice.

Project description:Psilocybin and other serotonergic psychedelics have re-emerged as therapeutics for neuropsychiatric disorders, including addiction. Psilocybin induces long-lasting effects on behavior, likely due to its profound ability to alter consciousness and augment neural connectivity and plasticity. Impaired synaptic plasticity in obesity contributes to 'addictive-like' behaviors, including heightened motivation for palatable food, and excessive food seeking and consumption. Here, we evaluate the effects of psilocybin on feeding behavior, energy metabolism, and as a weight-lowering agent in mice. We demonstrate that a single dose of psilocybin substantially alters the prefrontal cortex transcriptome but has no acute or long-lasting effects on food intake or body weight in diet-induced obese mice or in genetic mouse models of obesity. Similarly, sub-chronic microdosing of psilocybin has no metabolic effects in obese mice and psilocybin does not augment glucagon-like peptide-1 (GLP-1) induced weight loss or enhance diet-induced weight loss. A single high dose of psilocybin reduces sucrose preference but fails to counter binge-like eating behavior. Although these preclinical data discourage clinical investigation, there may be nuances in the mode of action of psychedelic drugs that are difficult to capture in rodent models, and thus require human evaluation to uncover.

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Project description:Negative energy balance (NEB) is an altered metabolic state in high yielding cows that occurs during the first few weeks postpartum when energy demands for lactation and maintenance exceed the energy supply from dietary intake. NEB can, in turn, lead to metabolic disorders and to reduced fertility. Alterations in the expression of more than 700 hepatic genes have previously been reported in a study of NEB in postpartum dairy cows. miRNAs (microRNA) are known to mediate many alterations in gene expression post transcriptionally. To study the hepatic miRNA content of postpartum dairy cows, including their overall abundance and differential expression, in mild NEB (MNEB) and severe NEB (SNEB) short read RNA sequencing was carried out. A NEB dairy cow model developed previously was used. In this model differential feeding and milking regimes were used to produce two groups of Holstein Friesian cows; MNEB and SNEB. Briefly, MNEB cows were fed ad libitum grass silage with 8 kg/day of a 21% crude protein dairy concentrate and milked once daily. SNEB cows were fed 25 kg/day silage with 4 kg/day concentrate and milked thrice daily. All procedures were carried out under license in accordance with the European Community Directive, 86-609-EC. Cows were slaughtered approximately 14 days postpartum (MNEB; 13.6 ± 0.75, range 11–15; SNEB 14.3 ± 0.56, range 13–16 ) and the entire liver was removed within 15 to 30 min. Samples weighing approximately 1 g were dissected, rinsed in RNase-free phosphate buffer, snap-frozen in liquid nitrogen and stored at -80ºC. Liver tissue samples from 5 SNEB and 3 MNEB animals were used for miRNA library preparation.

2014-03-14 | E-GEOD-55882 | biostudies-arrayexpress

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