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- Paralel Konfokal Mikroskop kullanarak birden fazla Hücre Kinetik Veri Kazanılması A Daha hızlı, Yüksek Çözünürlük, MTPA-GFP tabanlı Mitokondrial Füzyon Deneyi
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Articles by Fernanda M. Cerqueira in JoVE
Paralel Konfokal Mikroskop kullanarak birden fazla Hücre Kinetik Veri Kazanılması A Daha hızlı, Yüksek Çözünürlük, MTPA-GFP tabanlı Mitokondrial Füzyon Deneyi
Alenka Lovy1, Anthony J.A. Molina2, Fernanda M. Cerqueira3, Kyle Trudeau3, Orian S. Shirihai3
1Department of Neuroscience, Center for Neuroscience Research, Tufts School of Medicine, 2Department of Internal Medicine, Geriatrics & Gerontology, Wake Forest Baptist Medical Center, 3Department of Medicine, Boston University Medical Center
Mitokondriyal füzyon zamanla mitokondriyal ağ üzerinden photoconverted matris hedefli YFP dengelenme izleme ölçüldü. Şimdiye kadar, sadece bir hücre bir anda bir saat uzun kinetik analizine tabi olabilir. Biz aynı anda böylece veri toplama işlemini hızlandıracak, birden çok hücre ölçen bir yöntem sunuyoruz.
Other articles by Fernanda M. Cerqueira on PubMed
Long-term Intermittent Feeding, but Not Caloric Restriction, Leads to Redox Imbalance, Insulin Receptor Nitration, and Glucose Intolerance
Free Radical Biology & Medicine. Oct, 2011 | Pubmed ID: 21816219
Calorie restriction is a dietary intervention known to improve redox state, glucose tolerance, and animal life span. Other interventions have been adopted as study models for caloric restriction, including nonsupplemented food restriction and intermittent, every-other-day feedings. We compared the short- and long-term effects of these interventions to ad libitum protocols and found that, although all restricted diets decrease body weight, intermittent feeding did not decrease intra-abdominal adiposity. Short-term calorie restriction and intermittent feeding presented similar results relative to glucose tolerance. Surprisingly, long-term intermittent feeding promoted glucose intolerance, without a loss in insulin receptor phosphorylation. Intermittent feeding substantially increased insulin receptor nitration in both intra-abdominal adipose tissue and muscle, a modification associated with receptor inactivation. All restricted diets enhanced nitric oxide synthase levels in the insulin-responsive adipose tissue and skeletal muscle. However, whereas calorie restriction improved tissue redox state, food restriction and intermittent feedings did not. In fact, long-term intermittent feeding resulted in largely enhanced tissue release of oxidants. Overall, our results show that restricted diets are significantly different in their effects on glucose tolerance and redox state when adopted long-term. Furthermore, we show that intermittent feeding can lead to oxidative insulin receptor inactivation and glucose intolerance.