Evidence map›Paper›PMID 17765477›Full record

ArticleSchizophrenia research2008

In vitro and in vivo demonstration of risperidone implants in mice.

C Rabin, Y Liang, R S Ehrlichman, A Budhian, K L Metzger, C Majewski-Tiedeken, K I Winey, S J Siegel

Open access · greenAbstract read
In one paragraph

Article in Schizophrenia research, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.6field-weighted citation impact, top 18% 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

20 citing papers in PubMed, 62 citations in OpenAlex.

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  8. Poly(lactic-co-glycolic acid) devices: Production and applications for sustained protein delivery.Wiley interdisciplinary reviews. Nanomedicine and nanobiotechnology · 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

8 authors at 2 institutions in 1 country.

C RabinStanley Center for Experimental Therapeutics, Division of Neuropsychiatry, Department of Psychiatry, University of Pennsylvania, Philadelphia 19104, United States.
Y Liang
R S Ehrlichman
A Budhian
K L Metzger
C Majewski-Tiedeken
K I Winey
S J Siegel
University of Pennsylvania · USStanley Foundation · US

Funding

An Implantable Semiannual Antipsychotic Delivery SystemR01MH074672 · NIMH · UNIVERSITY OF PENNSYLVANIA · PI SIEGEL, STEVEN J · 2007 to 2014
$2.3M
NIMH NIH HHS 1R01MH074672-01NIMH NIH HHS R01 MH074672
6 · The paper itself

Abstract

backgroundNon-adherence with medication is a critical limitation in current long-term treatment of schizophrenia and a primary factor in poor quality-of-life outcomes. However, few treatments have addressed this shortcoming using an implantable drug delivery approach. The goal of this study was to provide in vitro and in vivo proof of concept for a long-term implantable risperidone delivery system in mice.

methodsImplantable formulations of risperidone were created using the biodegradable polymer Poly Lactic co Glycolic Acid (PLGA) combined with various drug loads. Implant bioactivity was tested using in vitro release and stability studies, as well as in vivo pharmacokinetic and behavioral studies in mice.

resultsThe pattern of risperidone release is influenced by various parameters, including polymer composition and drug load. In vitro measures demonstrate that risperidone is stable in implants under physiological conditions. Behavioral measures demonstrate the bioactivity of risperidone implants delivering 3 mg/kg/day in mice, while pharmacokinetic analyses indicate that reversibility is maintained throughout the delivery interval.

conclusionsThe current report suggests that implantable formulations are a viable approach to providing long-term delivery of antipsychotic medications based on in vivo animal studies and pharmacokinetics. Implantable medications demonstrated here can last two months or longer while maintaining coherence and removability past full release, suggesting a potential paradigm shift in the long-term treatment of schizophrenia.

Indexed as

Models, AnimalAnimalsBehavior, AnimalBiocompatible MaterialsDisease Models, AnimalDrug Delivery SystemsDrug DesignDrug ImplantsEvoked Potentials, AuditoryHumansIn Vitro TechniquesLactic AcidMiceMice, Inbred C57BLPatient CompliancePolyestersBiocompatible MaterialsDrug ImplantsLactic AcidPolyestersPolyglycolic Acidpoly(lactide)PolymersRisperidone

Identifiers

PMID17765477
PMCPMC2561216
OpenAlexW2084672841

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.