Evidence map›Paper›PMID 30830506›Full record

ArticleAAPS PharmSciTech2019

Erlotinib-Valproic Acid Liquisolid Formulation: Evaluating Oral Bioavailability and Cytotoxicity in Erlotinib-Resistant Non-small Cell Lung Cancer Cells.

Ketan Patel, Ravi Doddapaneni, Manali Patki, Vasanthkumar Sekar, Arvind Bagde, Mandip Singh

Open access · bronzeAbstract read
In one paragraph

Article in AAPS PharmSciTech, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.4field-weighted citation impact, top 19% 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

9 citing papers in PubMed, 25 citations in OpenAlex.

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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

6 authors at 2 institutions in 1 country.

Ketan PatelCollege of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, Florida, 32307, USA.
Ravi DoddapaneniCollege of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, Florida, 32307, USA.
Manali PatkiCollege of Pharmacy and Health Sciences, St. John's University, Queens, New York, 11439, USA.
Vasanthkumar SekarCollege of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, Florida, 32307, USA.
Arvind BagdeCollege of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, Florida, 32307, USA.
Mandip SinghCollege of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, Florida, 32307, USA. mandip.sachdeva@famu.edu.
Florida Agricultural and Mechanical University · USSt. John's University · US

Funding

Role of Telmisartan on Intra-Tumoral Distribution of Targeted NanoparticlesR21CA175618 · NCI · FLORIDA AGRICULTURAL AND MECHANICAL UNIV · PI SACHDEVA, MANDIP SINGH · 2014 to 2015
$341k
NCI NIH HHS R21 CA175618
6 · The paper itself

Abstract

Lung cancer patients develop acquired resistance to tyrosine kinase inhibitors including erlotinib (ERL) after few months of primary treatment. Evidently, new chemotherapy strategies to delay or overcome the resistance are urgently needed to improve the clinical outcome in non-small cell lung cancer (NSCLC) patients. In this paper, we have investigated the cytotoxic interaction of ERL and valproic acid (VA) in ERL-resistant NSCLC cells and developed a liquisolid formulation of ERL-VA for improving oral bioavailability of ERL. ERL is weakly basic, biopharmaceutical classification system (BCS) class II drug with extremely poor aqueous solubility while VA is a branched chain fatty acid. Ionic interaction between ERL and VA (1:2 M ratio) resulted in significant enhancement in saturation solubility of ERL at different pH range. Liquisolid formulation of ERL-VA (EVLF) developed using PEG 400 and mesoporous calcium silicate was characterized for solid state and in vitro dissolution in biorelevant dissolution medium (FaSSIF and FeSSIF). Cytotoxicity of ERL was enhanced by 2-5 folds on co-incubation with VA in HCC827/ERL cell line. Flow cytometry analysis using AnnexinV-FITC assay demonstrated that VA and ERL alone have poor apoptotic effect on HCC827/ERL cells while combination showed around 69% apoptotic cells. Western blot analysis confirmed the role of survivin in overcoming resistance. In vivo pharmacokinetic studies of EVLF in rats demonstrated a 199% relative bioavailability compared to ERL suspension. Thus, EVLF could be a promising alternative to current ERL formulations in the treatment of NSCLC.

Indexed as

Administration, OralAnimalsAntineoplastic AgentsBiological AvailabilityCalcium CompoundsCarcinoma, Non-Small-Cell LungCell Line, TumorCell SurvivalDrug Resistance, NeoplasmErlotinib HydrochlorideHumansLung NeoplasmsPolyethylene GlycolsRatsRats, Sprague-DawleySilicatesAntineoplastic AgentsCalcium Compoundscalcium silicateErlotinib Hydrochloridepolyethylene glycol 400Polyethylene GlycolsSilicatesValproic Aciddrug resistanceerlotinibliquisolid formulationnon-small cell lung cancervalproic acid

Identifiers

PMID30830506
PMCPMC12988600
OpenAlexW2920546806

What OpenQuestion holds

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Registered trials

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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.