Local blood flow in the dorsal hippocampus and cerebellar cortex in the offspring of iodine-deficient rats.

Experimental studies demonstrated that hypothyroidism can lead to depressive behavior and that thyroid hormones can have antidepressant effects. Postnatal changes in local blood flow in the dorsal hippocampus and cerebellar cortex were studied in the offspring of rats kept in conditions of iodine deficiency at conception and throughout gestation. The data obtained from these studies showed that severe limitation of iodine intake before and during gestation leads to marked deficiency in the blood supply to both of these brain structures, though the decrease in local blood flow in the dorsal hippocampus was more marked. Addition of iodine to the diet of females prevented this deficit of blood flow in both structures.

[About correlation of dysfunction of the thyroid gland with fibrocystic diseases in women].

The reference data contain a lot of information on the interrelation between destroying of a thyroid gland and fibrocystic diseases. However contradictions in these data proves that this issue is not solved completely. The aim of the given study was the investigation of interrelations between frequency of occurrence of pathology of a functional condition of the thyroid gland and the frequency of occurrence of fibrocystic diseases. 90 women aged 23-50 were investigated. Concentration of thyroxin (FT4), thyrotrophic hormone (TSH), titers of antibodies to thyreoperoxidase, microsomal fraction of thyreocytes and thyreoglobulin were measured by ELISA. Palpation and ultrasonic investigations of thyroid and mammary glands were used, morphology of central formations of mammary glands according to indications was also carried out. A special questionnaire was completed for each patient. Our investigations showed that along with the declining of function of thyroid gland and the increased level of TSH in the blood, the risk of development of fibrocystic diseases is increased twice.

[Local blood flow in the dorsal hippocampus and cerebellar cortex in progeny of iodine-deficient rats].

Experimental studies show depressive behavior in rats caused by hypothyroidism and antidepressant effect of thyroid hormones. The present study analyses changes in the hippocampal and cerebellar cortex local blood flow in the progeny of rats suffering from iodine deficiency before mating and during the whole period of gestation. The diet with very low iodine content results in a decrease of local blood flow in both brain structures, but the greatest changes were observed in hippocampus. Addition of the iodine to the diet eliminates the above blood flow changes.

[Altered ability to learn of rat offspring with iodine deficiency].

Experimental data demonstrate that hypothyroidism could result in depressive behavior and subsequently thyroid hormones could act as antidepressants. Postnatal changes in learning ability, memory and emotional status in posterity of rats, which have experienced different level of iodine deficiency before conception and during all gestation period were investigated in this study. Results obtained suggest that sudden iodine deprivation before and during gestation led to a significant neurological defect, which was represented by loss of ability to learn, one of the most important functions of brain in newborn and by evidence of depression. Iodine supply to the diet of female rats eliminates these effects completely.

[Open field testing of the progeny of rats with iodine deficiency].

Experimental studies show depressive behavior of rats caused by hypothyroidism and anti-depressive effect of thyroid hormones. The present study analysis changes in emotional state of the progeny of rats suffered from iodine deficiency of different severity before mating and during whole period of gestation. The basic diet with low content of iodine markedly decreased animal's motor activity and that was clearly demonstrated in open field testing. More pronounced changes in open field behavior was observed in group of animals with more restricted iodine diet (addition of KClO(4) to the basic diet) -- animals show significant decrease number crossed squares, number of entering into central squares and vertical standings, and increased frequency of gumming. Addition of the iodine to the diet prevents development of the mentioned changes.

[The association of autoimmune thyroiditis with HLA-B8 in the Georgian population].

The study of distribution of HLA antigens among Georgian population in case of autoimmune thyreoiditis revealed a statistically significant association of HLA-B8 antigen with autoimmune thyreoiditis. For statistical analysis we used following criterion: relative risk, attributive risk, preventive fraction, correlation coefficient and immunogenetic correction (P). Without compatibility to these criteria, there were no associations of the HLA antigens with the diseases. Although 8 of the antigens gave relative risk more than one, but only HLA B8 gave real association with autoimmune thyreoiditis. Typing of HLA antigens of class I and class II loci was done by classic microlymphocytotoxic test. The test performed on the lymphocytes from patients with autoimmune thyreoiditis. The character of association of HLA antigens among Georgian population with Hashimoto disease differs in character from other populations that evidently can be explained by the distributional character of HLA antigens among normal Georgian population.

[Pathogenesis of diabetic lesions of the myocardium]. / O patogeneze diabeticheskogo porazheniia miokarda.

On the basis of both literature data and their own observations, the authors suggest the identification of various forms of diabetic cardiopathy in relation to the pathogenetic mechanisms of the development of this complication. The microangiopathic form of diabetic cardiopathy develops as a result of cardiac diabetic microangiopathy. Vegetoneuropathic cardiopathy arises secondary to the impairment of the cardiac performance neural regulation associated with damage to the parasympathetic and/or sympathetic innervation of the heart secondary to diabetic vegetoneuropathy. Diabetic metabolic cardiopathy is induced by diabetic disorders in myocardial metabolism. A combined form of diabetic cardiopathy results from the combined lesion of the heart under the impact of the above specific mechanisms.