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Effect of electromagnetic field and surface modification on the electrical behavior of novel solid lipid nanoparticles covered with l-arginine.

Colloids and surfaces. B, Biointerfaces · 2009 · Mixed · Insufficient evidence

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MixedInsufficient evidencePaper 4973

In biomimetic solid lipid nanoparticles (SLNs) with l-arginine surface modification, exposure to an electromagnetic field (EMF) reduced charge and increased softness of the SLNs. Lipid composition (cacao butter fraction) and l-arginine surface coverage also a…

Study snapshot

PublicationColloids and surfaces. B, Biointerfaces · 2009
Study typein_vitro
Reported directionMixed
Evidence ratingInsufficient

Abstract

Solid lipid nanoparticles (SLNs) were fabricated with modification of bioactive l-arginine in their exterior region. The lipid cores of these biomimetic SLNs contained cacao butter (CB) and tripalmitin varying between 0% and 7%. Effects of lipid composition, l-arginine coverage, and electromagnetic field (EMF) on the electrical properties of the novel SLNs were investigated. The morphological micrographs revealed that the particle size distribution of the spherical SLNs was quite uniform. Based on small-angle X-ray scattering of the SLNs, thickness of the external layers was about 4.5nm. An increase in the percentage of CB in the emulsified fluids increased average diameter and charge of the SLNs in general. An increase in the percentage of CB however decreased particle softness. In addition, a higher fraction of the surface coverage of l-arginine yielded a higher average diameter and softness of the SLNs. On the contrary, an increase in the surface coverage of l-arginine on the SLNs decreased charge in the peripheral zone. In regard to electromagnetic regulation, the exposure to EMF reduced charge and increased softness of the SLNs. From biomedical aspect, these SLNs could be potentially applied to drug entrapment and targeted delivery in preclinical trials.

Machine Enhanced Logic

AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typein_vitro
Effect directionmixed
PopulationNot supplied
Sample sizeNot supplied
ExposureNot supplied
Evidence strengthInsufficientConfidence: 74% · Peer reviewed: yes

Main findings

In biomimetic solid lipid nanoparticles (SLNs) with l-arginine surface modification, exposure to an electromagnetic field (EMF) reduced charge and increased softness of the SLNs. Lipid composition (cacao butter fraction) and l-arginine surface coverage also altered diameter, charge, and softness.

Outcomes measured

  • Electrical properties of solid lipid nanoparticles (charge)
  • Mechanical property/softness of nanoparticles
  • Particle size/average diameter
  • Morphology/size distribution
  • External layer thickness (SAXS)

Limitations

  • EMF exposure parameters (e.g., frequency, intensity, duration) not reported in the abstract
  • In vitro/materials study on nanoparticles; no biological/health outcomes assessed
  • Sample size and statistical details not provided in the abstract
View raw extracted JSON
{
  "study_type": "in_vitro",
  "exposure": {
    "band": null,
    "source": "electromagnetic field (unspecified)",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "Electrical properties of solid lipid nanoparticles (charge)",
    "Mechanical property/softness of nanoparticles",
    "Particle size/average diameter",
    "Morphology/size distribution",
    "External layer thickness (SAXS)"
  ],
  "main_findings": "In biomimetic solid lipid nanoparticles (SLNs) with l-arginine surface modification, exposure to an electromagnetic field (EMF) reduced charge and increased softness of the SLNs. Lipid composition (cacao butter fraction) and l-arginine surface coverage also altered diameter, charge, and softness.",
  "effect_direction": "mixed",
  "limitations": [
    "EMF exposure parameters (e.g., frequency, intensity, duration) not reported in the abstract",
    "In vitro/materials study on nanoparticles; no biological/health outcomes assessed",
    "Sample size and statistical details not provided in the abstract"
  ],
  "evidence_strength": "insufficient",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "electromagnetic field",
    "solid lipid nanoparticles",
    "l-arginine",
    "surface modification",
    "cacao butter",
    "tripalmitin",
    "charge",
    "softness",
    "small-angle X-ray scattering"
  ],
  "suggested_hubs": []
}
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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.1016/j.colsurfb.2009.01.001
PubMed: 19181492

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