Bystander effect in human lymphocytes incubated with irradiated mitochondrial DNA deficient yeast cells

The comparison of strength of bystander effect induction in human lymphocytes by rho0 (complete loss of mitochondrial DNA) and rho+ (with fully functional mtDNA) strains of Saccharomyces cerevisiaewas carried out. The cultures of human peripheral blood were experimentally contaminated with nonirradiated or X-ray irradiated yeast cells (haploid rho0 and rho+ strains of S. cerevisiae). The doses of irradiation were 1 and 10 Gy. Well spread human metaphases were scored for chromosomal aberrations (CA). It was found that nonirradiated yeast cells (no matter rho0 or rho+) had no effect on lymphocytes chromosomal stability. Statistically significant increased level of CA was observed in lymphocytes incubated with irradiated rho+ yeast cells. The increasing of the CA was dose independent. However, after cocultivation with irradiated rho0 cells the bystander effect was revealed for dose 10 Gy only and his manifestation was mild in comparison with rho+ data. Thus, our findings suggest that strength of bystander effect depends on existence of mitochondrial DNA and normally functioning mitochondria

CLINICAL VALUE OF METFORMIN IN APPLICATION AGAINST DIABETES AND OBESITY IN CHILDREN AND TEENAGERS

The Type 1 and Type 2 diabetes mellitus spread is growing up among children. This article highlights the data on the disease epidemiology, etiology, risk factors of the progression, clinical run and complications. Special attention is paid to the obesity as a condition, which most often accompanies insulin resistance and diabetes formation; the authors consider also prevention opportunities. The tactics of the management of patient with the said pathology is also highlighted here.Key words: diabetes, insulin resistance, disturbed tolerance to glucose, obesity, treatment, children

CLINICAL VALUE OF METFORMIN IN APPLICATION AGAINST DIABETES AND OBESITY IN CHILDREN AND TEENAGERS

The Type 1 and Type 2 diabetes mellitus spread is growing up among children. This article highlights the data on the disease epidemiology, etiology, risk factors of the progression, clinical run and complications. Special attention is paid to the obesity as a condition, which most often accompanies insulin resistance and diabetes formation; the authors consider also prevention opportunities. The tactics of the management of patient with the said pathology is also highlighted here.Key words: diabetes, insulin resistance, disturbed tolerance to glucose, obesity, treatment, children

КЛИНИЧЕСКОЕ ЗНАЧЕНИЕ ПРИМЕНЕНИЯ МЕТФОРМИНА ПРИ САХАРНОМ ДИАБЕТЕ И ОЖИРЕНИИ У ДЕТЕЙ И ПОДРОСТКОВ

The Type 1 and Type 2 diabetes mellitus spread is growing up among children. This article highlights the data on the disease epidemiology, etiology, risk factors of the progression, clinical run and complications. Special attention is paid to the obesity as a condition, which most often accompanies insulin resistance and diabetes formation; the authors consider also prevention opportunities. The tactics of the management of patient with the said pathology is also highlighted here.Key words: diabetes, insulin resistance, disturbed tolerance to glucose, obesity, treatment, children.В настоящее время увеличивается частота встречаемости сахарного диабета как первого, так и второго типа среди детского населения. В данной статье приводятся данные по эпидемиологии болезни, этиологии, факторах риска развития, клиническому течению, осложнениях. Особое внимание отводится ожирению, как состоянию, наиболее часто сопровождающему инсулинорезистентность и формирование сахарного диабета; рассматриваются возможности профилактики. Представлена тактика ведения больных с указанной патологией.Ключевые слова: сахарный диабет, инсулинорезистентность, нарушенная толерантность к глюкозе, ожирение, лечение, дети. (Педиатрическая фармакология 2009;6(3):89-96)