Evidence map›Paper›PMID 26246318›Full record

ArticlePsychopharmacology2015

Food restriction-induced augmentation of heroin seeking in female rats: manipulations of ovarian hormones.

Firas Sedki, James Gardner Gregory, Adriana Luminare, Tracey M D'Cunha, Uri Shalev

Abstract read
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In one paragraph

Article in Psychopharmacology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 2 pooled it
0.8field-weighted citation impact, top 33% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed, 2 syntheses or guidelines pooled it, 35 citations in OpenAlex.

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  20. Modeling the development of drug addiction in male and female animals.Pharmacology, biochemistry, and behavior · 2018
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Firas SedkiDepartment of Psychology, Center for Studies in Behavioral Neurobiology/Groupe de Recherche en Neurobiologie Comportementale, Concordia University, Montreal, Quebec, Canada.
James Gardner Gregory
Adriana Luminare
Tracey M D'Cunha
Uri Shalev
Concordia University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

rationaleFood restriction augments heroin seeking in chronically food-restricted male rats under withdrawal, an effect not yet examined in female rats. Importantly, women and female rats possess an increased vulnerability to drugs of abuse, which may be mediated by fluctuations in ovarian hormones.

objectivesWe investigated the role of estradiol and progesterone in augmented heroin seeking in chronically food-restricted female rats, under withdrawal.

methodsFemale rats self-administered heroin for 10-12 days and were then allowed unrestricted (sated) or restricted access to food (FDR; ∼10 % reduction in body weight) for 14 days. On day 14, rats underwent a heroin-seeking test. Exp. 1: Rats underwent ovariectomy or sham surgery and were treated with a low dose of estradiol (5.0 % in cholesterol; subcutaneous capsule). Exp. 2: Rats underwent ovariectomy and were administered with a high dose of estradiol (0.5 mg/kg; subcutaneous) for 8 days before testing. Exp. 3: Progesterone injections (2.0 mg/kg; subcutaneous) were administered 24 h and 2 h before testing.

resultsFood restriction resulted in augmented heroin seeking, compared to sated controls. While ovariectomy had no effect, estradiol replacement attenuated the food restriction effect. Injections of progesterone had no effect on heroin seeking in either the sated or FDR groups.

conclusionsThe effect of food restriction on heroin seeking in female rats under withdrawal is as robust as previously found in males. Interestingly, estradiol replacement, but not progesterone, attenuates the food restriction effect in the ovariectomized rats, possibly due to its anorexic properties.

Indexed as

AnimalsEstradiolFemaleFood DeprivationHeroinHeroin DependenceOvariectomyOvaryProgesteroneRatsSelf AdministrationEstradiolHeroinProgesterone

Identifiers

PMID26246318
OpenAlexW1084753303

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.