Evidence map›Paper›PMID 20422263›Full record

ArticlePharmaceutical research2010

In vitro-in vivo correlations of scalable PLGA-risperidone implants for the treatment of schizophrenia.

Laura C Amann, Michael J Gandal, Robert Lin, Yuling Liang, Steven J Siegel

Abstract read
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In one paragraph

Article in Pharmaceutical research, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
–field-weighted citation impact
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

34 citing papers in PubMed.

  1. PLGA-based long-acting injectable (LAI) formulations.Journal of controlled release : official journal of the Controlled Release Society · 2025
    Review
  2. Article
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  5. The Journal of international medical research · 2024
    Article
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  20. In vitro-in vivo correlation for complex non-oral drug products: Where do we stand?Journal of controlled release : official journal of the Controlled Release Society · 2015
    Review
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.

Laura C AmannTranslational Neuroscience Program, School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
Michael J Gandal
Robert Lin
Yuling Liang
Steven J Siegel

Funding

An Implantable Semiannual Antipsychotic Delivery SystemR01MH074672 · NIMH · UNIVERSITY OF PENNSYLVANIA · PI SIEGEL, STEVEN J · 2007 to 2014
$2.3M
NIMH NIH HHS 5R01MH074672-04
6 · The paper itself

Abstract

purposeNonadherence to antipsychotic medications is a major obstacle preventing optimal outcomes for patients with schizophrenia. Extended release systems exist in the form of depot injections, but these formulations exhibit several disadvantages. To address these concerns, we previously demonstrated proof of concept for an antipsychotic implant containing risperidone and the biodegradable polymer poly(lactic-co-glycolic) acid (PLGA).

methodsWe build upon recently published data by utilizing a scalable single-screw extrusion system for the production of PLGA-risperidone implants. Implants were composed of 40% risperidone and 60% PLGA, with varying ratios of lactide to glycolide (50:50, 65:35, 75:25 or 85:15). Risperidone release was assessed in vitro and in vivo in rats, and Level A, B and C correlations (IVIVCs) attempted for all. Bioavailability was verified with locomotor testing

resultsLevel B analysis yielded the greatest correlation between in vitro and in vivo data (R (2) = 0.9425), while Level C yielded the lowest (R (2) = 0.8336). Although, based on qualitative results, a Level A correlation was not achieved, it did produce an R (2) of 0.9261. Locomotor testing demonstrated that peak serum concentrations coincide with significant reductions in activity.

conclusionData demonstrate the applicability of our modeling system and advance long-term, implantable antipsychotics toward clinical application.

Indexed as

Absorbable ImplantsDrug Delivery SystemsAnimalsAntipsychotic AgentsHumansLactic AcidMaleModels, AnimalPolyglycolic AcidPolylactic Acid-Polyglycolic Acid CopolymerRatsRats, Sprague-DawleyRisperidoneSchizophreniaAntipsychotic AgentsLactic AcidPolyglycolic AcidPolylactic Acid-Polyglycolic Acid CopolymerRisperidone

Identifiers

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.