Endogenous opiates and behavior: 2022

RJ Bodnar - Peptides, 2023 - Elsevier
This paper is the forty-fifth consecutive installment of the annual anthological review of
research concerning the endogenous opioid system, summarizing articles published during …

Long-access heroin self-administration induces region specific reduction of grey matter volume and microglia reactivity in the rat

N Cannella, S Tambalo, V Lunerti, G Scuppa… - Brain, Behavior, and …, 2024 - Elsevier
In opioid use disorder (OUD) patients, a decrease in brain grey matter volume (GMV) has
been reported. It is unclear whether this is the consequence of prolonged exposure to …

Active vs passive novelty-related strategies: Sex differences in exploratory behaviour and monoaminergic systems

K Liiver, S Imbeault, M Školnaja, T Kaart… - Behavioural Brain …, 2023 - Elsevier
Sex differences are apparent in numerous behavioural characteristics. In order to compare
and characterise male and female variability of exploratory behaviour, 365 male and 401 …

A multi-symptomatic model of heroin use disorder in rats reveals distinct behavioral profiles and neuronal correlates of heroin vulnerability versus resiliency

BN Kuhn, N Cannella, AD Crow, V Lunerti, A Gupta… - bioRxiv, 2024 - biorxiv.org
Objective The behavioral and diagnostic heterogeneity within human opioid use disorder
(OUD) diagnosis is not readily captured in current animal models, limiting translational …

The effects of sleep restriction during abstinence on oxycodone seeking: Sex-dependent moderating effects of behavioral and hypothalamic-pituitary-adrenal axis …

CM Olsen, BL Glaeser, A Szabo, H Raff… - Physiology & …, 2023 - Elsevier
During opioid use and abstinence, sleep disturbances are common and are thought to
exacerbate drug craving. In this study, we tested the hypothesis that sleep restriction during …

Generalization of a positive-feature interoceptive morphine occasion setter across the rat estrous cycle

DR Peart, EV Claridge, JM Karlovcec, R El Azali… - Hormones and …, 2024 - Elsevier
Introduction Interoceptive stimuli elicited by drug administration acquire conditioned
modulatory properties of the induction of conditioned appetitive behaviours by exteroceptive …

Differences in drug intake levels (high versus low takers) do not necessarily imply distinct drug user types: insights from a new cluster-based model

DM Castaneda, M Job - bioRxiv, 2024 - biorxiv.org
Background: Classifying psychostimulant users as high and low responders based on
median split of drug intake levels has face-validity: these appear to be different types of drug …

Genome-wide association study reveals multiple loci for nociception and opioid consumption behaviors associated with heroin vulnerability in outbred rats

BN Kuhn, N Cannella, AS Chitre, KMH Nguyen… - bioRxiv, 2024 - biorxiv.org
The increased prevalence of opioid use disorder (OUD) makes it imperative to disentangle
the biological mechanisms contributing to individual differences in OUD vulnerability. OUD …

Genome-wide association study reveals multiple loci for nociception and opioid consumption behaviors associated with heroin vulnerability in outbred rats

B Kuhn, N Cannella, A Chitre, KM Nguyen, K Cohen… - 2024 - researchsquare.com
The increased prevalence of opioid use disorder (OUD) makes it imperative to disentangle
the biological mechanisms contributing to individual differences in OUD vulnerability. OUD …

The effects of cocaine and heroin polydrug use on drug-related motivation and affective state in Lister-Hooded rats

K Adamatzky - 2023 - sussex.figshare.com
Cocaine and heroin are commonly abused drugs and are often used together. Such
polydrug use increases the risk of psychopathology, overdose, and poorer treatment …