Synthesis and Antibacterial Properties of Novel Quaternary Ammonium Lignins.

The ongoing demand for effective antimicrobial materials persists, and lignin emerges as a promising natural antibacterial material with renewable properties. The adaptability of lignin to various chemical modifications offers avenues to enhance its antimicrobial activity. Here, we employed chloromethylation and subsequent functionalization with variable tertiary alkyl dimethyl amines to produce C6-C18 quaternary ammonium lignins (QALs) from hardwood (aspen), softwood (pine), and grass (barley straw).

[Complications of transnasal endoscopic orbital decompression in thyroid eye disease].

Purpose: The study evaluates the frequency of complications after transnasal endoscopic orbital decompression (TEOD).

Material And Methods: The study included 40 patients (75 orbits) with thyroid eye disease (TED; also termed Graves' ophthalmopathy, GO; thyroid-associated orbitopathy, TAO), who were divided into three groups depending on the method of surgical treatment. The first group consisted of 12 patients (21 orbits) who were treated with TEOD as the only method of surgical treatment.

[Transnasal endoscopic orbital decompression in the algorithm of surgical treatment of endocrine ophthalmopathy].

Objective: To develop an algorithm for the use of transnasal endoscopic orbital decompression (TEOD) in endocrine ophthalmopathy (EOP).

Material And Methods: The results of 225 TEODs are analyzed. 139 patients with EOP were under observation, who were divided into two groups.

[Ophthalmic complications of endoscopic sinus surgery].

Endoscopic surgery of the accessory nasal sinuses (ANA) is widely used as the main treatment method for ANA diseases. It is a well-proven, safe and effective method. However, occasionally certain complications may occur.

Development of Functional Composite Cu(II)-Polyoxometalate/PLA with Antimicrobial Properties.

Novel composite self-disinfecting films of polylactic acid (PLA) filled with nanosized particles of double sodium-copper(II) paratungstate B NaCu(CuOH)[WO(OH)]·32HO (POM) were developed. The solvent casting (POM/PLA film) and solvent-free melt extrusion methods (Extr. POM/PLA film) were applied for film preparation.