Evidence map›Paper›PMID 25848248›Full record

ArticleInternational journal of nanomedicine2015

Novel PLGA-based nanoparticles for the oral delivery of insulin.

Sampath Malathi, Perumal Nandhakumar, Velayudham Pandiyan, Thomas J Webster, Sengottuvelan Balasubramanian

Open access · goldAbstract read
In one paragraph

Article in International journal of nanomedicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
2.7field-weighted citation impact, top 10% 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

15 citing papers in PubMed, 68 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

5 authors at 1 institution in 1 country.

Sampath MalathiDepartment of Inorganic Chemistry, Guindy Campus, University of Madras, Chennai, Tamil Nadu, India.
Perumal NandhakumarDepartment of Veterinary Biochemistry, Madras Veterinary College, Chennai, Tamil Nadu, India.
Velayudham PandiyanDepartment of Veterinary Biochemistry, Madras Veterinary College, Chennai, Tamil Nadu, India.
Thomas J WebsterDepartment of Chemical Engineering, Northeastern University, Boston, USA.
Sengottuvelan BalasubramanianDepartment of Inorganic Chemistry, Guindy Campus, University of Madras, Chennai, Tamil Nadu, India.
Northeastern University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundInsulin is the drug therapy for patients with insulin-dependent diabetes mellitus. A number of attempts have been made in the past to overcome the problems associated with the oral delivery of insulin, but with little success. Orally administered insulin has encountered with many difficulties such as rapid degradation and poor intestinal absorption. The potential use of D-α-tocopherol poly(ethylene glycol) 1000 succinate (TPGS)-emulsified poly(ethylene glycol) (PEG)-capped poly(lactic-co-glycolic acid) (PLGA) nanoparticles (NPs) was investigated for sustained delivery of insulin (IS).

objectiveTo investigate the efficacy of TPGS-emulsified PEG-capped PLGA NPs (TPPLG NPs) as a potential drug carrier for the oral delivery of insulin.

methodsA series of biodegradable low-molecular-weight PLGA (80/20 [PLG4] and 70/30 [PLG6]) copolymers were synthesized by melt polycondensation. The commercial insulin-loaded TPGS-emulsified PEG-capped PLGA NPs (ISTPPLG NPs) were synthesized by water-oil-water emulsion solvent evaporation method. The physical and chemical properties of PLGA copolymers, particle size, zeta potential, and morphology of the NPs were examined. The in vivo studies of ISTPPLG NPs were carried out in diabetic rats by oral administration.

resultsThe maximum encapsulation efficiency of ISTPPLG6 NPs was 78.6% ± 1.2%, and the mean diameter of the NPs was 180 ± 20 nm. The serum glucose level was significantly (twofold) decreased on treatment with ISTPPLG NPs, and there was a threefold decrease with insulin-loaded PLGA (70/30) NPs when compared to that of free insulin-treated diabetic rats. The results show that the oral administration of ISTPPLG6 NPs is an effective method of reducing serum glucose level for a period of 24 hours. Histopathological studies reveal that ISTPPLG NPs could restore the damage caused by streptozotocin in the liver, kidneys, and pancreas, indicating its biocompatibility and regenerative effects.

conclusionISTPPLG6 NPs can act as potential drug carriers for the oral delivery of insulin.

Indexed as

Administration, Oralalpha-TocopherolAnimalsDiabetes Mellitus, ExperimentalDrug CarriersEmulsionsGlucoseInsulinLactic AcidMaleNanoparticlesParticle SizePolyethylene GlycolsPolyglycolic AcidPolylactic Acid-Polyglycolic Acid CopolymerRatsalpha-TocopherolDrug CarriersEmulsionsGlucoseInsulinLactic AcidPolyethylene GlycolsPolyglycolic AcidPolylactic Acid-Polyglycolic Acid CopolymertocophersolanVitamin Edrug deliveryhistopathologyhypoglycemic effectpoly(ethylene glycol)polymer nanoparticlestocopherol poly(ethylene glycol) 1000 succinate

Identifiers

PMID25848248
PMCPMC4383223
OpenAlexW2091668300

What OpenQuestion holds

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LicenceCC BY-NC
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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.