Light sensitivity in Beroidae ctenophores: Insights from laboratory studies and genomics.

Light detection underlies a variety of animal behaviors, including those related to spatial orientation, feeding, avoidance of predators, and reproduction. Ctenophores are likely the oldest animal group in which light sensitivity based on opsins evolved, so they may still have the ancestral molecular mechanisms for photoreception. However, knowledge about ctenophore photosensitivity, associated morphological structures, molecular mechanisms involved, and behavioral reactions is limited and fragmented.

2-Azahetaryl-2-(oxoindolin-2-ylidene)acetonitriles as Colorimetric Probes for Zn: Synthesis and Optical Properties.

A new one-pot approach for the synthesis of the Zn-sensitive probes 2-azahetaryl-2-(oxoindolin-2-ylidene)acetonitriles and is described. The method includes the formation of imidoylchloride and its further condensation with azahetarylacetonitrile . The structure of the obtained compounds is studied using H nuclear magnetic resonance (NMR), C NMR, infrared (IR), high-resolution mass spectrometry (HRMS), and UV-Vis spectroscopy techniques.

[Differential diagnosis and treatment of Chandler iridocorneal endothelial syndrome].

The article presents a profound clinical, instrumental and morphological analysis of a family case of iridocorneal endothelial syndrome (Chandler syndrome) notable for atypical aggressive bilateral course and unusual hereditary manifestation. Five stages of the pathological process have been suggested.

Expedited Route to Fully Substituted Amino-Pyrazole Building Blocks and Their Further Transformations.

We report here an efficient and easily reproducible two-step approach to heterocycle-substituted amino-pyrazoles from heterocyclic acetonitriles and their unprecedented subsequent transformations to fully substituted pyrazoles. Such transformations include regioselective derivatization from polyamino derivatives, formation of tetracyclic compounds in up to 45% overall yield, and deaminative transformations through diazotization, followed by arylation through Suzuki-Miyaura cross-coupling and C-H activation, providing arylated pyrazoles in up to 71% yield over four steps. This strategy allows the swift introduction of significant molecular complexity to a range of scaffolds.

[Multi-level analysis of the prevalence of pseudoexfoliative syndrome and pseudoexfoliative glaucoma].

Unlabelled: Epidemiological investigation of pseudoexfoliative syndrome (PEX) as a glaucoma predictor is necessary for antiglaucoma treatment planning.

Aim: To study the prevalence of PEX and pseudoexfoliative glaucoma (PXFG) among healthy people, naïve patients, and patients under observation as well as to evaluate the hypotensive efficacy of bimatoprost/timolol fixed combination (FCBT) over 4 months in PXFG.

Material And Methods: Epidemiological analysis, ophthalmological examination, statistical analysis.

Ultrastructure of the endothelium of the drainage system of the eye.

The endothelium of the ocular drainage system (Schlemm's canal, collector tubules, and aqueous veins) in primary juvenile glaucoma undergoes degenerative dystrophic changes with compensatory hypertrophy and proliferation at the initial stages of the glaucomatous process and atrophy and desquamation at advanced and terminal stages. Progressive decrease in the pinocytous function of endotheliocytes, reduction of the protein-synthesizing and mitochondrial compartments of the cytoplasm, and formation of autophagosomes reflect the process of endotheliocyte degeneration in general.

Ultrastructure of connective tissue of eye drainage system in ophthalmic hypertension associated with primary juvenile glaucoma.

In primary juvenile glaucoma, the connective tissue of the juxtacanalicular zone and sclera undergo constant reorganization because of incessant synthesis and degradation of extracellular matrix components with pronounced fluctuations of electron density of collagen fibrils. Destructive changes in the perivascular nerve trunks were detected at all stages of the glaucoma process, including the initial stages: numerous large foci of cytoplasmic organelle destruction with the formation of autophagosomes and residual bodies predominated in the cytoplasm of myelinated axons of nerve cells.

Glycosaminoglycans of the trabecular meshwork of the eye in primary juvenile glaucoma.

Significant changes in the qualitative and quantitative composition of glycosaminoglycans (decreased content of sulfated glycosaminoglycans and increased content of collagen-bound proteoglycanes) in the trabecular meshwork of the eye in primary juvenile glaucoma indicate fibrosis of the juxtacanalicular tissue, which was detected in pathomorphological examination of the operation material.

[Radionuclide examination of functional disorders in patients with acute abscess of lung].

Potential of radionuclide examination for study of external respiratory function is discussed. Results of examination of 42 patients with lung abscess are analyzed. Procedure of perfusion and ventilating aerosol pulmonoscintigraphy with (99m)Tc-pentatex is described in detail.

[The comprehensive assessment of the degree of severity of their condition in patients with mechanical jaundice].

The authors examined 42 patients with obstructive jaundice of various severity. Comparison of the findings of radiohepatography with intoxication values according to the medium-weight molecule test and the biochemical parameters revealed statistically significant differences of some quantitative indices depending of the severity of jaundice. The results of the study made it possible to recommend the use of the values of blood clearance, time of maximum accumulation of a radiopharmacological agent in the liver, hepatic and blood retention index, and the medium-weight molecule test for objective quantitative appraisal of the severity of obstructive jaundice.