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Polimery w medycynie 2012

[Therapeutically active dressings--biomaterials in a study of collagen glycation].

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Anna Pielesz
Jadwiga Paluch

Schlüsselwörter

Abstrakt

BACKGROUND

Active dressings (biomaterials, hydrogels) are cross-linked three-dimensional macromolecular networks. One of the most important properties of active dressings, is their ability for controlled uptake, release and retention of molecules. The formation of advanced glycation end products AGEs progressively increases with normal aging. However, AGE products are formed at accelerated rates in age and stress-related diseases (burns, in wound healing) and also in vitro.

OBJECTIVE

The aim will be also to develop a series of gels showing ability of controlled uptake, release and retention of molecules. The hydrogels can be used as biologically and therapeutically (antibacterial and anticancer) active biomaterials.

METHODS

The following materials and reagents were used in the examination: dried plants: Equisetum arvense L., Pulmonaria officinalis L., Agropyron repens. Non-defatted films were extracted from the dried plants. The suspension was stirred and extracted. Temperature was controlled using a water bath. The filtrate was vacuum condensed. The gelling precipitate was poured onto Petri plates and dried. The swelling ratio and the percent loading were calculated. The released amount of CaCl2 at different time intervals was determined by measuring the conductivity. The extent of glycation in collagen was measured.

CONCLUSIONS

Novel types of swelling hydrogels have been prepared from dried plants and alginic acid. The active dressings showed swelling in aqueous medium, swelling characteristics were dependent on the chemical composition of hydrogel. The hydrogels were also loaded with CaCl2 and their potential for release was judged by measuring conductivity. The activity of hydrogels--active dressings on collagen incubated with glucose showed an decrease in glycation. So, hydrogels--active dressings, a known antiglycating agent which have therapeutic role in wound healing.

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