Evidence map›Paper›PMID 15695536›Full record

ArticleAnnals of the rheumatic diseases2005

Treatment of experimental arthritis with poly(D, L-lactic/glycolic acid) nanoparticles encapsulating betamethasone sodium phosphate.

M Higaki, T Ishihara, N Izumo, M Takatsu, Y Mizushima

Open access · bronzeAbstract read
In one paragraph

Article in Annals of the rheumatic diseases, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed, 1 pooled it
3.0field-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

39 citing papers in PubMed, 1 synthesis or guideline pooled it, 146 citations in OpenAlex.

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  7. Research Progress of SN38 Drug Delivery System in Cancer Treatment.International journal of nanomedicine · 2024
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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 2 institutions in 1 country.

M HigakiInstitute of Medical Science, St Marianna University School of Medicine, 2-16-1 Sugao, Miyamae, Kawasaki 216-8512, Japan. megumu@dd.iij4u.or.jp
T Ishihara
N Izumo
M Takatsu
Y Mizushima
Jikei University School of Medicine · JPSt. Marianna University School of Medicine · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo examine the therapeutic activity of hydrophilic glucocorticoid encapsulated in PLGA nanoparticles, which have shown slow release and are targeted to inflamed joints after intravenous administration, in experimental arthritis models.

methodsBetamethasone sodium phosphate (BSP) encapsulated in PLGA nanoparticles with a size of 100-200 nm (PLGA-nanosteroid) was prepared using a modified oil in water emulsion solvent diffusion method with Zn ions and coated with lecithin. Rats with adjuvant arthritis (AA rats) and mice with anti-type II collagen antibody induced arthritis (AbIA mice) were treated intravenously with PLGA-nanosteroid after the initial sign of arthritis.

resultsIn AA rats, a 30% decrease in paw inflammation was obtained in 1 day and maintained for 1 week with a single injection of 100 mug of PLGA-nanosteroid. Soft x ray examination 7 days after this treatment showed decreased soft tissue swelling. Moreover, the PLGA-nanosteroid was also highly effective in AbIA mice. A single injection of 30 mug of the PLGA-nanosteroid resulted in almost complete remission of the inflammatory response after 1 week. In contrast, the same dose of free BSP after three administrations only moderately reduced the severity of inflammation. In addition, a histological examination 7 days after the treatment showed a significant decrease of the inflammatory cells in the joints.

conclusionThe observed strong therapeutic benefit obtained with PLGA-nanosteroid may be due to the targeting of the inflamed joint and its prolonged release in situ. Targeted drug delivery using a sustained release PLGA-nanosteroid is a successful intervention in experimental arthritis.

Indexed as

Drug CarriersNanostructuresAnimalsAnti-Inflammatory AgentsArthritis, ExperimentalBetamethasoneDelayed-Action PreparationsFemaleGlucocorticoidsLactic AcidMaleMiceMice, Inbred BALB CNanotechnologyPolyglycolic AcidPolylactic Acid-Polyglycolic Acid CopolymerAnti-Inflammatory AgentsBetamethasonebetamethasone sodium phosphateDelayed-Action PreparationsDrug CarriersGlucocorticoidsLactic AcidPolyglycolic AcidPolylactic Acid-Polyglycolic Acid CopolymerPolymers

Identifiers

PMID15695536
PMCPMC1755606
OpenAlexW2124730525

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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.