Evidence map›Paper›PMID 31632009›Full record

ArticleInternational journal of nanomedicine2019

Drug Delivery System Based On Minoxidil Nanoparticles Promotes Hair Growth In C57BL/6 Mice.

Noriaki Nagai, Yoshie Iwai, Akane Sakamoto, Hiroko Otake, Yoshihiro Oaku, Akinari Abe, Tohru Nagahama

Open access · goldAbstract read
In one paragraph

Article in International journal of nanomedicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 2 pooled it
6.1field-weighted citation impact, top 3% 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

23 citing papers in PubMed, 2 syntheses or guidelines pooled it, 53 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

7 authors at 2 institutions in 1 country.

Noriaki NagaiFaculty of Pharmacy, Kindai University, Osaka 577-8502, Japan.
Yoshie IwaiFaculty of Pharmacy, Kindai University, Osaka 577-8502, Japan.
Akane SakamotoFaculty of Pharmacy, Kindai University, Osaka 577-8502, Japan.
Hiroko OtakeFaculty of Pharmacy, Kindai University, Osaka 577-8502, Japan.
Yoshihiro OakuResearch & Development Laboratories Self-Medication, Taisho Pharmaceutical Co., Ltd., Saitama 331-9530, Japan.ORCID 0000-0003-2947-4894
Akinari AbeResearch & Development Laboratories Self-Medication, Taisho Pharmaceutical Co., Ltd., Saitama 331-9530, Japan.
Tohru NagahamaResearch & Development Laboratories Self-Medication, Taisho Pharmaceutical Co., Ltd., Saitama 331-9530, Japan.
Kindai University · JPTaisho Pharmaceutical (Japan) · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeWe designed formulations based on minoxidil (MXD) nanoparticles (N-MXD) and examined whether N-MXD can increase drug delivery into the follicles. In addition, we investigated the effect of N-MXD on hair growth in C57BL/6 mice.

methodsN-MXD (1%) was prepared as follows: methylcellulose, p-hydroxyalkylbenzoates, mannitol, and MXD were dispersed in purified water and milled using zirconia beads under refrigeration (5500 rpm, 30 s×15 times, intermittent milling). C57BL/6 mice were used to evaluate hair-growth effects. The expression levels of mRNA and protein for vascular endothelial growth factor (VEGF) and insulin-like growth factor-1 (IGF-1) were determined by real-time PCR and ELISA methods, respectively.

resultsThe ratio of solid-MXD was approximately 60% in N-MXD, and the MXD nanoparticles (90-300 nm) were oblong in shape. For the design of nanomedicines, usability is important. Therefore, we measured the stability and toxicity after N-MXD treatment. No agglutination of MXD nanoparticles was detected for 2 weeks, and no redness or MXD powder residue was observed in the skin after repetitive applications of N-MXD. Next, we evaluated hair-growth effects by N-MXD treatment. MXD contents in the skin tissue from N-MXD were lower than for commercially available MXD formulations (CA-MXD). Conversely, MXD contents in the hair bulbs were higher for N-MXD than for CA-MXD, and the drug efficacy of N-MXD was also higher than that of CA-MXD. In addition, the mRNA and protein levels of IGF-1 and VEGF were enhanced by the repetitive application of N-MXD and CA-MXD, and the enhanced IGF-1 and VEGF levels were significantly higher for N-MXD than for CA-MXD.

conclusionWe designed a novel nanomedicine based on MXD nanoparticles and showed that N-MXD can deliver MXD into hair bulbs via hair follicles and that the therapeutic efficiency for hair growth is higher than for CA-MXD (solution type).

Indexed as

Drug Delivery SystemsAnimalsHairHair FollicleInsulin-Like Growth Factor IMaleMice, Inbred C57BLMinoxidilNanoparticlesParticle SizeRNA, MessengerSkinSolubilityVascular Endothelial Growth Factor AInsulin-Like Growth Factor IMinoxidilRNA, MessengerVascular Endothelial Growth Factor Aandrogenetic alopeciahair follicle deliveryhair growthminoxidilnanoparticle

Identifiers

PMID31632009
PMCPMC6778480
OpenAlexW2975943876

What OpenQuestion holds

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LicenceCC BY-NC
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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.