Aortic root replacement for aortic root aneurysm with severe aortic regurgitation and incidentally detected left ventricular hyper-trabeculation/noncompaction.

A 54-year-old male with severe aortic regurgitation (AR), aortic root aneurysm, left ventricular hyper-trabeculation/noncompaction (LVHT) and systolic dysfunction with a left ventricular ejection fraction (LVEF) of 52% underwent successful aortic root replacement. Intraoperative video-endoscopy confirmed LVHT. At 3-year follow-up, he remains in an excellent clinical condition and echocardiography shows an improvement of the systolic function, LVHT and LVEF of 66%.

[Complete detachment of the right coronary artery in a patient with acute aortic dissection type A].

Extremely rare and formidable complication of acute aortic dissection type A in a young patient is reported in the article. Clinical symptoms and features of surgical technique are described.

[Nucleotide sequence of cDNA and organization of the gene for alpha-subunit of photoreceptor phosphodiesterase of cyclic GMP in human retinal cones].

Five clones were isolated from a human retina cDNA library whose cDNA inserts allowed reconstruction of the total sequence of the human clone cGMP phosphodiesterase alpha'-subunit cDNA comprising 3455 bp. The protein's deduced sequence contains 858 amino acids residues with molecular mass 99,169 Da. A substantial homology was revealed between the amino acid sequence of the human cones cGMP-phosphodiesterase alpha'-subunit and the corresponding sequences of alpha, beta, and alpha' subunits of visual cGMP-phosphodiesterase of bovine, murine, chicken and human retinas.

[Organization of the gene for the beta-subunit of human photoreceptor cyclic GMP phosphodiesterase].

Two recombinant bacteriophage lambda clones encoding a 27.8-kb fragment of the human phosphodiesterase beta-subunit gene were isolated from a human genomic library. The nucleotide sequences of 19 exons (from the 4th to 22nd), 18 introns, and the 3'-flanking region were determined.

Human cone-specific cGMP phosphodiesterase alpha' subunit: complete cDNA sequence and gene arrangement.

Four independent phage clones containing the fragments of cone-specific cGMP phosphodiesterase (PDE) alpha' subunit (PDE-alpha') cDNA were isolated from the human cDNA library. The screening of the genomic library resulted in isolation of four independent phage clones with the fragments of human cone PDEalpha' gene including 5'-flanking region and exons ranged from 1 to 14 (overall 32 kilobases). Structural studies of the clones made it possible to establish the complete human cone PDEalpha' cDNA structure (3455 base pairs).

The human rod photoreceptor cGMP phosphodiesterase beta-subunit. Structural studies of its cDNA and gene.

cDNA clones encoding the beta-subunit of the photoreceptor cGMP phosphodiesterase (PDE) were isolated from a human retina library and their sequence was determined. The encoded polypeptide consists of 854 amino acid residues with a calculated molecular mass of 98,416 Da. Alignment of the deduced amino acid sequence with the earlier analysed alpha-, beta- and alpha'-subunits of bovine and mouse PDEs demonstrates a high homology.

[Structural studies of cDNA and the gene for the beta-subunit of cGMP phosphodiesterase from human retina].

cDNA clones encoding the beta-subunit of the photoreceptor cGMP phosphodiesterase-(PDE) were isolated from a human retinal library. The encoded polypeptide has 854 amino acid residues with calculated molecular mass of 98416 Da. Alignment of the deduced amino acid sequence with the previously analysed alpha-, beta- and alpha'-subunits of the bovine and mouse PDEs demonstrates highly significant similarities.

[Morphobiophysical parallels in assessing the hepatotropic action of nitrosodimethylamine].

On the third day after a single administration of nitrosodimethylamine (30 mg/kg) to white rats histochemistry reveals the greatest injury to the liver parenchyma. This correlates with a reduction in relative strength of intercellular contacts, an increase in relative strength of the membranes, and an elevation of the membrane potential during liver tissue survival in vitro. The latter fact can be explained, at any rate partially, by the lowering of the activity of cytoplasmic ATPase which competes with electrogenic Na+.

[Structuro-functional changes in the placenta as a result of exposure to atmospheric pollutants].

Under the influence of atmospheric pollutions certain structural-functional changes take place in placenta: terminal villi per stipulated square unite, villi with desquamated epithelium, with dilated vessels, with deposition of fibrinoid masses, with plasmodial buds increase in number; section area occupied by epithelial layer decreases; RNA concentration and histoenzymatic activity change in the latter.