Background: Sirtuins mediate metabolic responses to nutrient availability and slow aging and accompanying decline in health. This study was designed to assess the expressions of sirtuin1 (SIRT1) and sirtuin3 (SIRT3) in the liver and hypothalamus after duodenal-jejunal bypass (DJB) surgery in rats.
Methods: A total of 38 rats were randomly assigned to either sham group (n=8) or DJB group (n=30). DJB group was again divided into three groups according to the elapsed time after surgery (10 weeks, DJB10; 16 week, DJB16; 28 week, DJB28). The mRNA and protein expressions of SIRT1 and SIRT3 in the liver and hypothalamus were measured by reverse transcription polymerase chain reaction, Western blot, and immunohistochemistry analyses. NAD/NADH ratio was also measured.
Results: We found increased mRNA and protein expression levels of SIRT1 in the liver of DJB16 and DJB28 groups compared with those of sham group. The mRNA and protein expressions of SIRT3 in the liver of DJB group increased proportionally to the elapsed time after DJB surgery. The mRNA expression levels of SIRT1 in the hypothalamus increased in DJB16 and DJB28 groups and protein expression levels of SIRT1 in the hypothalamus increased in DJB10, DBJ16, and DJB28 groups compared with sham group. We observed that mRNA and protein levels of SIRT3 in the hypothalamus of DJB group were not changed.
Conclusion: This study proves that DJB increases SIRT1 and SIRT3 expressions in the liver and SIRT1 expression in the hypothalamus. These results suggest the possibility of sirtuins being involved in bypass surgery-induced metabolic changes.
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http://dx.doi.org/10.7570/jomes.2018.27.4.248 | DOI Listing |
Open Heart
January 2025
Department of Cardiology, Leeds General Infirmary, Leeds, UK
Background: Increasing demand for transcatheter aortic valve implantation (TAVI) places greater emphasis on the efficiency of pathways and services. A significant limitation to increasing TAVI capacity is the availability of cardiac catheterisation laboratory time. We have developed a novel complexity scoring system (TAVI ComplEXity; TEX score) which can aid in planning lists with appropriate case selection.
View Article and Find Full Text PDFPaediatr Drugs
December 2024
Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada.
New drugs for Duchenne muscular dystrophy (DMD) are emerging rapidly. However, we and others believe these drugs are achieving regulatory approval prematurely. It is the cardiorespiratory complications of DMD that cause the disease's major morbidities and that determine survival.
View Article and Find Full Text PDFJ Med Invest
October 2024
Department of Surgery, Tokushima University, Tokushima, Japan.
Introduction: We investigated the effect of Daikenchuto (TU-100) on the early postoperative period in duodenal-jejunal bypass (DJB).
Methods: Study 1:The effect of TU-100 on diabetic rats was investigated. Rats were sacrificed after receiving TU-100 for one week.
J Hum Nutr Diet
February 2025
Department of Bariatric Minimal Access & General Surgery, Max Smart Super Speciality Hospital, New Delhi, India.
Interv Cardiol
August 2024
Department of Cardiology, Leeds Teaching Hospitals NHS Trust Leeds, UK.
Background: For patients with severe aortic stenosis, transcatheter aortic valve implantation (TAVI) is a less invasive but equally effective treatment option compared with surgical aortic valve replacement (SAVR). In 2019, we reported low rates of TAVI in the UK compared with other countries in western Europe and highlighted profound geographical variation in TAVI care. Here, we provide contemporary data on access to aortic valve replacement by either TAVI or SAVR across clinical commissioning groups in England.
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