[Effect of laser and non-laser radiation on the brain (experimental study)].

It has been established in a study on animals and human cadavers that light can penetrate the brain through the intact skin and eyes. Quantitative optical characteristics of the brain and internal organs are presented.

[Use of a microfiltration method in producing inactivated influenza vaccine].

The process of microfiltration carried out in the regimen of destruction of concentrational polarization layer decreases considerably the retention of admixture proteins in filtrational concentration of virus suspension. This allows the membrane technology to be used not only for concentration but also for profound purification of the virus-containing allantoic fluid for preparation of inactivated influenza virus. Using the microfiltration method, vaccine preparations of any influenza virus strain may be obtained without loss of biological activity.

[Spectral sensitivity of photoreceptors of the compound eye of the locust].

Intracellular recordings have shown that there are three types of receptors in the retina of the locust with lambda max = 360, 430 and 530 nm. Their spectral sensitivity curves are considerably wider than the absorption curves of the corresponding pigments. On the basis of spectral sensitivity curves obtained and assuming that each receptor contains only one pigment, possible coefficients of electrical coupling between receptors with different spectral characteristics are calculated.

[Surgical treatment of vasorenal hypertension in children and adolescents].

Problems of the surgical treatment of vasorenal hypertension in children are elucidated as well as types of reconstruction of the renal arteries, indications and contra-indications for surgery. Results of 34 operations fulfilled for fibromuscular lesions of the renal arteries in 32 patients and causes of reoperations and resection of the organs are analyzed.

[Measurement of the optical parameters of animal and human tissues in exposure to lasers].

A new method for calculation of low laser-energy exposure in biological tissues has been worked out. This method allows to determine the exposition of laser-treatment in each laser exposure more exactly.

[Morphogenesis of fibromuscular dysplasia of the renal arteries (an ultrastructural study)].

Ultrastructural examinations of 32 cases of various forms of fibrousmuscular dysplasia (FMD) of renal arteries showed the lesions at the subcellular level to be identical in all these forms and to differ only in their intensity and localization. As the disease progresses, smooth muscle cells (SMC) show signs of activation accompanied by an increased collagen synthesis. In this, the cells exhibit large multiblade nuclei, intensive proliferation of the granular endoplasmic reticulum, hypertrophy of the Golgi complex.

[Role of the liver in lipid metabolism in the parenteral feeding of fatty emulsions].

Tests conducted on dogs furnished information on the participation of the liver in the metabolism of heptadecanoic acid and fat emulsion "Intralipid-20%" with two modes of their administration: into the systemic circulation (through. v. jugularis) and directly into v.

[Identification of "slow" cells in insects eyes].

Responses of "slow" cells of the compound eye of grasshopper to equal-energetic flashes of monochromatic light of different wavelengths were recorded by intracellular microelectrode. Majority of cells had the curve of spectral efficiency of 540 nm. This curve coincided practically with the curve of spectral efficiency measured with ERG.

[Fibromuscular dysplasia of the renal arteries].

Thirty-two cases of fibrous-muscular dysplasial of renal arteries (including one autopsy case) were studied. Sections of renal arteries removed at reconstructive operations from patients suffering from renovascular hypertension were examined. Two morphological variants of the process were distinguished: medial dysplasia (perimedial fibroplasia, medial fibroplasia, and dissecting aneurysm) and intimal proliferation.

[Fibrous dysplasia of renal arteries (terminology, classification, clinical aspects and diagnosis)].

The examination was conducted in 72 patients with renovascular hypertension caused by fibromuscle dysplasia of the renal arteries. According to the authors, fibromuscle dysplasia of the renal arteries stands third after atherosclerosis and non-specific aorto-arteritis. Among the preliminary diagnostic measures of importance are such as intravenous urography, isotope renography, scintigraphy, but their value is much lower than in cases of atherosclerotic stenosis or stenosis due to non-specific aorto-arteritis, which is attributed to a good collateral circulation in the kidney.

[Vasorenal hypertension in children and adolescents].

From among child-patients examined by the authors 41 were found to suffer from hypertension of vaso-renal genesis (58.5%). Major diagnostic tests were: functional intravenous urography, radioisotope renography, scintigraphy, angiography of the kidneys and also determination of the renin activity in the venous renal blood.