Evidence map›Paper›PMID 21289408›Full record

ArticleNanotechnology2011

The role of surface charge on the uptake and biocompatibility of hydroxyapatite nanoparticles with osteoblast cells.

Liang Chen, Joseph M Mccrate, James C-M Lee, Hao Li

Abstract read
In one paragraph

Article in Nanotechnology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 101 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
101citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

101 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Effects of long-term alendronate treatment on postmenopausal osteoporosis bone material properties.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2015
    Trial
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  13. SynthesizedNanomaterials (Basel, Switzerland) · 2024
    Article
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41 more citing papers are in PubMed but not listed here.

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

4 authors.

Liang ChenDepartment of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO 65211, USA.
Joseph M Mccrate
James C-M Lee
Hao Li

Funding

Development of Novel High-aspect-ratio Nanofillers for Dental CompositesR21DE018821 · NIDCR · UNIVERSITY OF MISSOURI-COLUMBIA · PI LI, HAO · 2009 to 2010
$409k
NIDCR NIH HHS 1R21DE018821-01A2NIDCR NIH HHS R21 DE018821
6 · The paper itself

Abstract

The objective of this study is to evaluate the effect of hydroxyapatite (HAP) nanoparticles with different surface charges on the cellular uptake behavior and in vitro cell viability and proliferation of MC3T3-E1 cell lines (osteoblast). The nanoparticles' surface charge was varied by surface modification with two carboxylic acids: 12-aminododecanoic acid (positive) and dodecanedioic acid (negative). The untreated HAP nanoparticles and dodecanoic acid modified HAP nanoparticles (neutral) were used as the control. X-ray diffraction (XRD) revealed that surface modifications by the three carboxylic acids did not change the crystal structure of HAP nanoparticles; Fourier transform infrared spectroscopy (FT-IR) confirmed the adsorption and binding of the carboxylic acids on the HAP nanoparticles' surfaces; and zeta potential measurement confirmed that the chemicals successfully modified the surface charge of HAP nanoparticles in water based solution. Transmission electron microscopy (TEM) images showed that positively charged, negatively charged and untreated HAP nanoparticles, with similar size and shape, all penetrated into the cells and cells had more uptake of HAP nanoparticles with positive charge compared to those with negative charge, which might be attributed to the attractive or repulsive interaction between the negatively charged cell membrane and positively/negatively charged HAP nanoparticles. The neutral HAP nanoparticles could not penetrate the cell membrane due to their larger size. MTT assay and LDH assay results indicated that as compared with the polystyrene control, greater cell viability and cell proliferation were measured on MC3T3-E1 cells treated with the three kinds of HAP nanoparticles (neutral, positive, and untreated), among which positively charged HAP nanoparticles showed the strongest improvement for cell viability and cell proliferation. In summary, the surface charge of HAP nanoparticles can be modified to influence the cellular uptake of HAP nanoparticles and the different uptake also influences the behavior of cells. These in vitro results may also provide useful information for investigations of HAP nanoparticle applications in gene delivery and intracellular drug delivery.

Indexed as

Analysis of VarianceAnimalsCell Growth ProcessesCell LineCell SurvivalDurapatiteLauric AcidsMaterials TestingMiceMicroscopy, Electron, TransmissionNanoparticlesOsteoblastsSpectroscopy, Fourier Transform InfraredSurface PropertiesX-Ray Diffraction12-aminododecanoic acidDurapatitelauric acidLauric Acids

Identifiers

PMID21289408
PMCPMC3144725

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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.