[Morphological features of the myocardium of the atrial appendages in patients with different forms of atrial fibrillation].

Aim: to analyze the morphological features of the myocardium of the atrial appendages in patients with different forms of atrial fibrillation (AF) and to compare the findings with the clinical parameters of patients.

Material And Methods: Light and electron microscopies were used to examine the myocardium of the atrial appendages in adult patients with paroxysmal (PAF), persistent (PrAF), or long-standing persistent atrial fibrillation (LPAF) and in comparison group patients with sinus rhythm without history of AF. A morphometric method was employed to evaluate myocardial fibrosis and to measure the diameter of cardiomyocytes (CMCs); the degree of lipomatosis and amyloidosis was semiquantitatively determined; and the content of CMC myofibrils was estimated.

The O-specific polysaccharide from the marine bacterium Pseudoalteromonas agarivorans KMM 255(T).

The O-specific polysaccharide was isolated from the lipopolysaccharide of a marine bacterium Pseudoalteromonas agarivorans KMM 255(T) and studied by chemical methods along with (1)H and (13)C NMR spectroscopies. The following new structure of the O-specific polysaccharide from P. agarivorans KMM 255(T) containing 2-acetamido-2-deoxy-D-glucose (D-GlcNAc), D-glucose (D-Glc), D-glucuronic acid (D-GlcA) and two residues of D-galactose (D-Gal) was established: Formula: see text].

Structure of the O-specific polysaccharide from the deep-sea marine bacterium Idiomarina abyssalis КММ 227(T) containing a 2-O-sulfate-3-N-(4-hydroxybutanoyl)-3,6-dideoxy-d-glucose.

The O-specific polysaccharide was isolated from the lipopolysaccharide of type strain Idiomarina abyssalis КММ 227(T) and studied by sugar analysis, Smith degradation, and two-dimensional (1)H and (13)C NMR spectroscopy including (1)H,(1)H-TOCSY, (1)H,(1)H-COSY, (1)H,(1)H-ROESY, (1)H,(13)C-HSQC, (1)H,(13)C-HMBC, (1)H,(13)C-H2BC and (1)H,(13)C-HSQC-TOCSY experiments. The new structure of the O-specific polysaccharide of I. abyssalis КММ 227(T) containing 2-O-sulfate-3-N-(4-hydroxybutanoyl)-3,6-dideoxy-d-glucose was established.

The new sulfated O-specific polysaccharide from marine bacterium Cobetia pacifica KMM 3878, containing 3,4-O-[(S)-1-carboxyethylidene]-D-galactose and 2,3-O-disulfate-D-galactose.

The O-specific polysaccharide was isolated from the lipopolysaccharide of Cobetia pacifica KMM 3878 and studied by chemical methods along with (1)H and (13)C NMR spectroscopy, including, 1D TOCSY and 2D (1)H, (1)H COSY, (1)H, (13)C HSQC, (1)H, (1)H ROESY, (1)H, (13)C HMBC and (1)H, (13)C H2BC experiments. The following new structure of the sulfated O-polysaccharide from C. pacifica KMM 3878 containing 3,4-O-[(S)-1-carboxyethylidene]-D-galactose and 2,3-O-disulfate-D-galactose was established: →4)-β-D-Gal2,3R-(1→6)-β-D-Gal3,4(S-Pyr)-(1→6)-β-D-Gal-(1→ Where R is -SO3H.

The O-specific polysaccharide of the marine bacterium Rheinheimera pacifica KММ 1406T containing D- and L-2-acetamido-2-deoxy-galacturonic acids.

The O-specific polysaccharide was isolated from the lipopolysaccharide of Rheinheimera pacifica KММ 1406T and studied by chemical methods along with 1H and 13C NMR spectroscopy. It was shown that the polysaccharide contains one residue each of 2-acetamido-2-deoxy-D-galactose (D-GalNAc), 2-acetamido-2-deoxy-D- and 2-acetamido-2-deoxy-L-galacturonic acids (D-GalNAcA, L-GalNAcA), 2,4-diacetamido-2,4,6-trideoxy-D-glucose (D-QuiNAc4NAc), and 4-(N-acetyl-D-alanyl)amino-4,6-dideoxy-D-glucose (D-Qui4NAlaAc) and has the following structure: →4)-α-D-GalpNAc-(1→4)-α-L-GalpNAcA-(1→3)-β-D-QuipNAc4NAc-(1→2)-β-D-Quip4NDAlaAc-(1→4)-α-D-GalpNAcA-(1→

The sulfated O-specific polysaccharide from the marine bacterium Cobetia pacifica KMM 3879(T.).

The O-specific polysaccharide was isolated from the lipopolysaccharide of Cobetia pacifica KMM 3879(T) and studied by chemical methods along with (1)H and (13)C NMR spectroscopy, including 1D TOCSY and 2D (1)H, (1)H-COSY, ROESY, (1)H, (13)C-HSQC, HMBC, H2BC and HMQC-TOCSY experiments. The following new structure of the sulfated O-polysaccharide from the C. pacifica KMM 3879(T) containing rhamnose (Rha), glucose (Glc), and galactose (Gal) was established: where R is -SO3H.

The structure of the O-specific polysaccharide from marine bacterium Litorimonas taeanensis G5T containing 2-acetamido-4-((3S,5S)-3,5-dihydroxyhexanamido)-2,4-dideoxy-D-quinovose and 2-acetamido-2,6-dideoxy-L-xylo-hexos-4-ulose.

The O-polysaccharide was isolated from the lipopolysaccharide of Litorimonas taeanensis G5(T) and studied by chemical methods along with (1)H and (13)C NMR spectroscopy, including (1)H, (1)H COSY, 1D and 2D TOCSY, NOESY, (1)H, (13)C HSQC, HMBC, and H2BC experiments. The following new structure of the O-polysaccharide of L. taeanensis G5(T) containing 2-acetamido-2-deoxy-D-galacturonic acid (D-GalNAcA), 2-acetamido-4-((3S,5S)-3,5-dihydroxyhexanamido)-2,4-dideoxy-D-quinovose (D-QuiNAc4NR), and 2-acetamido-2,6-dideoxy-L-xylo-hexos-4-ulose (L-Sug) was established: →4)-α-D-GalpNAcA-(1→3)-α-D-QuiNAc4NR-(1→3)-α-L-Sug-(1→ where R is (3S,5S)-3,5-dihydroxyhexanoic acid.

Influence of temperature on structure and magnetic properties of exchange coupled TbCo/FeNi bilayers.

Among amorphous films of rare earth-transition metal (RE-TM) alloys as exchange-biasing layers in magnetoresistive heads and spin-valve sensors, the amorphous Tb-Co films have most high practical potential. In the present work the influence of the temperature and the heat treatment parameters on the structure and magnetic properties was studied for exchange bias FeNi/Tb35Co65 bilayers annealed in vacuum or a nitrogen flow. A simple explanation of the dependence of the magnetic properties on the temperature and the heat treatment parameters connected with structural changes in each one of the layers was proposed.

Halogenated diterpenoids from the red alga Laurencia nipponica.

Chemical compositions of three collections of the red alga Laurencia nipponica from the western part of the Sea of Japan were studied. One of them contained a series of the previously known sesquiterpenoids. Another one gave C15 bromoallene ethers, predominantly.

Sea urchins--a new model for PAF research in embryology.

This study reports on the effect of PAF on sperm motility, fertilization and early embryo development in the sea urchin Strongylocentrotus intermedius. PAF proved to be the amplifier of sperm motility and fertilizing capability at 10(-8)-10(-9) M and was toxic at higher concentrations. BN 52201 did not counteract the PAF action.

The effect of long-chain N-acylethanolamines on some membrane-associated functions of neuroblastoma C1300 N18 cells.

As reported earlier (Gulaya, N.M., Vaskovsky, V.

A universal reagent for phospholipid analysis.

A simple procedure for preparing a stable stock reagent an working reagents for the detection and determination of phospholipids is proposed, and a simple, rapid and accurate thin-layer chromatographic technique is suggested. The results obtained for egg yolk phospholipids are presented as an example.

Modified spray for the detection of phospholipids on thin-layer chromatograms.

A simplified method for the preparation of the Dittmer-Lester spray for the detection of phospholipids on thin-layer chromatograms is described.