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Related Concept Videos

Adhesion01:14

Adhesion

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Adhesion occurs when one type of molecule is attracted to a different molecule. Water exhibits adhesive properties in the presence of polar surfaces, such as glass or cellulose in plants. For instance, when water is poured into a glass, the positively charged hydrogen molecules of water are more attracted to the negatively charged oxygen molecules in the silica than to the oxygen in neighboring water molecules.
Capillary action is a result of water’s adhesive tendencies. When a narrow...
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Cell Adhesion in Plants01:14

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Plants have rigid cell walls that are made up of cell wall polysaccharides that mediate cell-cell adhesion. The primary cell walls of plants consist of two independent and interacting polysaccharide networks: a pectin matrix that embeds the second network comprising cellulose and hemicelluloses.
Pectins are complex heteropolymers mainly composed of negatively-charged α-D-glucopyranosyl uronic acid and some neutral glycosyl residues such as α-L-rhamnopyranose, α-L-arabinofuranose,...
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Glycosaminoglycans01:23

Glycosaminoglycans

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Glycosaminoglycans (GAGs), also known as mucopolysaccharides, are long and linear polymers comprising of specific repeating disaccharides - the amino sugar that can be N-acetylglucosamine or N-acetylgalactosamine, and a uronic acid that is usually glucuronic acid or iduronic acid.
GAGS are found in the extracellular matrix of vertebrates, invertebrates, and bacteria. Due to their polar nature they attract water, and serve as excellent lubricants or shock absorbers in an animal body.
Hyaluronic...
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Connective Tissue Fibers and Ground Substance01:17

Connective Tissue Fibers and Ground Substance

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One of the significant functions of connective tissue is connecting tissues and organs. Unlike epithelial tissue that is composed of cells closely packed with little or no extracellular space in between, connective tissue cells are dispersed in a matrix. The matrix usually includes a large amount of extracellular material produced by the connective tissue cells that are embedded within it. It plays a significant role in the functioning of this tissue. The major component of the matrix is a...
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Synthesis of Strong Adhesive Hydrogel, Gelatin O-Nitrosobenzaldehyde
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Sundew adhesive: a naturally occurring hydrogel.

Yujian Huang1, Yongzhong Wang1, Leming Sun1

  • 1Department of Biomedical Engineering, College of Engineering, The Ohio State University, Columbus, OH 43210, USA Dorothy M. Davis Heart and Lung Research Institute, Wexner Medical Center, The Ohio State University, Columbus, OH 43210, USA Interdisciplinary Biophysics Graduate Program, The Ohio State University, Columbus, OH 43210, USA.

Journal of the Royal Society, Interface
|May 8, 2015
PubMed
Summary

Sundew plant adhesive is a natural hydrogel with nano-networks. This bioadhesive shows potential for tissue engineering due to its cell adhesion properties and low toxicity.

Keywords:
nano-networknaturally occurring hydrogelsundew adhesivetissue engineering

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Area of Science:

  • Biomaterials Science
  • Plant Biology
  • Nanotechnology

Background:

  • Bioadhesives are gaining interest for their eco-friendly properties.
  • Sundew plant exudate is a viscoelastic bioadhesive used for insect capture.
  • The nanoscale structural properties influencing sundew adhesive's viscoelasticity are not well understood.

Purpose of the Study:

  • To elucidate the nanoscale structure and assembly mechanisms of sundew adhesive.
  • To investigate the relationship between structure, temperature, and adhesive properties.
  • To explore the potential of sundew adhesive in tissue engineering applications.

Main Methods:

  • Characterization of hydrogel structure using atomic force microscopy.
  • Analysis of polysaccharide assembly driven by electrostatic interactions and divalent cations.
  • Evaluation of cell adhesion and cytotoxicity of derived scaffolds.

Main Results:

  • Sundew adhesive is a hydrogel with polysaccharide nano-networks assembled via electrostatic interactions.
  • Negatively charged nanoparticles (231.9 ± 14.8 nm) are key to nano-network assembly.
  • Adhesion strength and elasticity decrease at lower temperatures.
  • Fibrous scaffolds from sundew adhesive enhance cell adhesion and show low cytotoxicity.

Conclusions:

  • Sundew adhesive possesses unique nano-network structures responsible for its properties.
  • Temperature significantly affects the adhesive and elastic characteristics.
  • Sundew adhesive is a promising nanomaterial for tissue engineering applications.