AIDS (London, England) · 2003
Expression of adipogenic transcription factors, peroxisome proliferator-activated receptor gamma co-activator 1, IL-6 and CD45 in subcutaneous adipose tissue in lipodystrophy associated with highly active antiretroviral therapy.
СтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод пока не подготовлен
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Kannisto Katja, Sutinen Jussi, Korsheninnikova Elena, Fisher Rachel M, Ehrenborg Ewa, Gertow Karl, Virkamäki Antti, Nyman Tuulikki, Vidal Hubert, Hamsten Anders, Yki-Järvinen Hannele
Аннотация
OBJECTIVE: To determine the expressions of multiple genes in the subcutaneous adipose tissue of HIV-positive, highly active antiretroviral therapy (HAART)-treated patients with and without lipodystrophy.
DESIGN AND METHODS: Real-time polymerase chain reaction was used to measure gene expressions in this cross-sectional study.
RESULTS: The messenger RNA concentrations of adipose transcription factors (peroxisome proliferator-activated receptor (PPAR) gamma and delta and sterol regulatory element binding protein 1c) were all significantly lower in the lipodystrophic than the non-lipodystrophic group. The mRNA concentration of PPAR-gamma co-activator 1 (PGC-1), which regulates mitochondrial biogenesis, was lower in the lipodystrophic than the non-lipodystrophic group. The mRNA expression of lipoprotein lipase, acyl coenzyme A synthase and glucose transport protein 4 were significantly lower in the lipodystrophic than the non-lipodystrophic group, but the mRNA concentrations of fatty acid transport and binding proteins were similar in both groups. The mRNA concentrations of IL-6 and CD45 (a common leukocyte marker) were significantly higher in the lipodystrophic than the non-lipodystrophic group.
CONCLUSION: Multiple alterations characterize gene expression in the subcutaneous adipose tissue of patients with HAART-associated lipodystrophy compared with HIV-positive, HAART-treated patients without lipodystrophy. The low expression of transcription factors inhibits adipocyte differentiation. The low expression of PGC-1 may contribute to mitochondrial defects. In addition, IL-6 and CD45 expressions are increased, the latter implying an excessive number of cells of leukocyte origin in lipodystrophic adipose tissue. Mitochondrial injury and an excess of proinflammatory cytokines may lead to increased apoptosis. All these changes may contribute to the loss of subcutaneous fat in HAART-associated lipodystrophy.
DESIGN AND METHODS: Real-time polymerase chain reaction was used to measure gene expressions in this cross-sectional study.
RESULTS: The messenger RNA concentrations of adipose transcription factors (peroxisome proliferator-activated receptor (PPAR) gamma and delta and sterol regulatory element binding protein 1c) were all significantly lower in the lipodystrophic than the non-lipodystrophic group. The mRNA concentration of PPAR-gamma co-activator 1 (PGC-1), which regulates mitochondrial biogenesis, was lower in the lipodystrophic than the non-lipodystrophic group. The mRNA expression of lipoprotein lipase, acyl coenzyme A synthase and glucose transport protein 4 were significantly lower in the lipodystrophic than the non-lipodystrophic group, but the mRNA concentrations of fatty acid transport and binding proteins were similar in both groups. The mRNA concentrations of IL-6 and CD45 (a common leukocyte marker) were significantly higher in the lipodystrophic than the non-lipodystrophic group.
CONCLUSION: Multiple alterations characterize gene expression in the subcutaneous adipose tissue of patients with HAART-associated lipodystrophy compared with HIV-positive, HAART-treated patients without lipodystrophy. The low expression of transcription factors inhibits adipocyte differentiation. The low expression of PGC-1 may contribute to mitochondrial defects. In addition, IL-6 and CD45 expressions are increased, the latter implying an excessive number of cells of leukocyte origin in lipodystrophic adipose tissue. Mitochondrial injury and an excess of proinflammatory cytokines may lead to increased apoptosis. All these changes may contribute to the loss of subcutaneous fat in HAART-associated lipodystrophy.
Предметные рубрики MeSH
ActinsAdipose TissueAdultAntiretroviral Therapy, Highly ActiveAntiviral AgentsCCAAT-Enhancer-Binding ProteinsCarrier ProteinsCase-Control StudiesCoenzyme A LigasesCross-Sectional StudiesDNA-Binding ProteinsFatty Acid Transport ProteinsFatty Acid-Binding Protein 7Fatty Acid-Binding ProteinsFemaleGene ExpressionGlucose Transporter Type 1Glucose Transporter Type 4HIV InfectionsHIV-Associated Lipodystrophy SyndromeHumansInterleukin-6Leukocyte Common AntigensLipoprotein LipaseMaleMembrane ProteinsMembrane Transport ProteinsMonosaccharide Transport ProteinsMuscle ProteinsNeoplasm ProteinsProtein Tyrosine Phosphatase, Non-Receptor Type 1RNA, MessengerReceptors, Cytoplasmic and NuclearReverse Transcriptase Polymerase Chain ReactionSterol Regulatory Element Binding Protein 1Transcription FactorsTumor Suppressor Proteinsbeta 2-Microglobulin