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Oral Supplementation Effect of Iron and its Complex Form With Quercetin on Oxidant Status and on Redistribution of Essential Metals in Organs of Streptozotocin Diabetic Rats. ROMANIAN JOURNAL OF DIABETES NUTRITION AND METABOLIC DISEASES 2019. [DOI: 10.2478/rjdnmd-2019-0005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Abstract
Background and aims: Quercetin, is a polyphenolic antioxidant compound. It is able to form complex with metal ions such as iron and exerts a broad range of biological activities like improving metabolic disorders. This research aims at investigating the effect of oral supplementation of iron (2.5mg Fe/Kg/day) and its complex form (molar ratio 1:5; 2.5mg/25mg/Kg/day) with quercetin (25mg/Kg/day) on lipid metabolism, oxidant status and trace elements contents in organs of Wistar diabetic rats (45 mg/kg/rat.ip of streptozotocin) during eight weeks of experimentation.
Material and method: To achieve this, liver and adipose tissue enzymes activities, NO
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, O2
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, TBARs, carbonyl protein levels in plasma were analysed. Metals (Cu, Fe, Mg, Zn) analysis of organs were determined by inductively coupled plasma atomic emission spectroscopy.
Results: Iron supplemented alone induced a noticeable disorder in lipid, lipoprotein, lipases and oxidant status. Yet, it caused an imbalance in the redistribution of metals in the organs of diabetic and non diabetic rats. Iron-quercetin complex was shown as less harmful and more beneficial than iron supplemented alone.
Conclusions: This complex could reverse oxidative stress and iron deficiency mostly caused by the diabetic disease but at the same time it induces an imbalance in redistribution of other essential metals.
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Xu M, Chang HH, Jung X, Moro A, Chou CEN, King J, Hines OJ, Sinnett-Smith J, Rozengurt E, Eibl G. Deficiency in hormone-sensitive lipase accelerates the development of pancreatic cancer in conditional KrasG12D mice. BMC Cancer 2018; 18:797. [PMID: 30086728 PMCID: PMC6081906 DOI: 10.1186/s12885-018-4713-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 07/31/2018] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Hormone sensitive lipase (HSL) is a neutral lipase that preferentially catalyzes the hydrolysis of diacylglycerol contributing to triacylglycerol breakdown in the adipose tissue. HSL has been implicated to play a role in tumor cachexia, a debilitating syndrome characterized by progressive loss of adipose tissue. Consequently, pharmacological inhibitors of HSL have been proposed for the treatment of cancer-associated cachexia. In the present study we used the conditional KrasG12D (KC) mouse model of pancreatic ductal adenocarcinoma (PDAC) with a deficiency in HSL to determine the impact of HSL suppression on the development of PDAC. METHODS KC;Hsl+/+ and KC;Hsl-/- mice were fed standard rodent chow for 20 weeks. At sacrifice, the incidence of PDAC was determined and inflammation in the mesenteric adipose tissue and pancreas was assessed histologically and by immunofluorescence. To determine statistical significance, ANOVA and two-tailed Student's t-tests were performed. To compare PDAC incidence, a two-sided Fisher's exact test was used. RESULTS Compared to KC;Hsl+/+ mice, KC;Hsl-/- mice gained similar weight and displayed adipose tissue and pancreatic inflammation. In addition, KC;Hsl-/- mice had reduced levels of plasma insulin and leptin. Importantly, the increased adipose tissue and pancreatic inflammation was associated with a significant increase in PDAC incidence in KC;Hsl-/- mice. CONCLUSIONS HSL deficiency is associated with adipose tissue and pancreatic inflammation and accelerates PDAC development in the KC mouse model.
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Affiliation(s)
- Mu Xu
- Departments of Surgery, David Geffen School of Medicine, University of California, Los Angeles, 10833 Le Conte Ave, CHS 72-236, Los Angeles, CA, 90095, USA
| | - Hui-Hua Chang
- Departments of Surgery, David Geffen School of Medicine, University of California, Los Angeles, 10833 Le Conte Ave, CHS 72-236, Los Angeles, CA, 90095, USA.,CURE: Digestive Diseases Research Center, University of California at Los Angeles, Los Angeles, USA
| | - Xiaoman Jung
- Departments of Surgery, David Geffen School of Medicine, University of California, Los Angeles, 10833 Le Conte Ave, CHS 72-236, Los Angeles, CA, 90095, USA
| | - Aune Moro
- Departments of Surgery, David Geffen School of Medicine, University of California, Los Angeles, 10833 Le Conte Ave, CHS 72-236, Los Angeles, CA, 90095, USA
| | - Caroline Ei Ne Chou
- Departments of Surgery, David Geffen School of Medicine, University of California, Los Angeles, 10833 Le Conte Ave, CHS 72-236, Los Angeles, CA, 90095, USA
| | - Jonathan King
- Departments of Surgery, David Geffen School of Medicine, University of California, Los Angeles, 10833 Le Conte Ave, CHS 72-236, Los Angeles, CA, 90095, USA
| | - O Joe Hines
- Departments of Surgery, David Geffen School of Medicine, University of California, Los Angeles, 10833 Le Conte Ave, CHS 72-236, Los Angeles, CA, 90095, USA
| | - James Sinnett-Smith
- Departments of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA.,CURE: Digestive Diseases Research Center, University of California at Los Angeles, Los Angeles, USA
| | - Enrique Rozengurt
- Departments of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA.,CURE: Digestive Diseases Research Center, University of California at Los Angeles, Los Angeles, USA
| | - Guido Eibl
- Departments of Surgery, David Geffen School of Medicine, University of California, Los Angeles, 10833 Le Conte Ave, CHS 72-236, Los Angeles, CA, 90095, USA. .,CURE: Digestive Diseases Research Center, University of California at Los Angeles, Los Angeles, USA.
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Loss of TGH/Ces3 in mice decreases blood lipids, improves glucose tolerance, and increases energy expenditure. Cell Metab 2010; 11:183-93. [PMID: 20197051 DOI: 10.1016/j.cmet.2010.02.005] [Citation(s) in RCA: 139] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2008] [Revised: 12/03/2009] [Accepted: 02/08/2010] [Indexed: 11/23/2022]
Abstract
Excessive accumulation of triacylglycerol in peripheral tissues is tightly associated with obesity and has been identified as an independent risk factor for insulin resistance, type 2 diabetes, and cardiovascular complications. Here we show that ablation of carboxylesterase 3 (Ces3)/triacylglycerol hydrolase (TGH) expression in mice (Tgh(-/-)) results in decreased plasma triacylglycerol, apolipoprotein B, and fatty acid levels in both fasted and fed states. Despite the attenuation of very low-density lipoprotein secretion, TGH deficiency does not increase hepatic triacylglycerol levels. Tgh(-/-) mice exhibit increased food intake, respiratory quotient, and energy expenditure without change in body weight. These metabolic changes are accompanied by improved insulin sensitivity and glucose tolerance. Tgh(-/-) mice have smaller sized pancreatic islets but maintain normal glucose-stimulated insulin secretion. These studies demonstrate the potential of TGH as a therapeutic target for lowering blood lipid levels.
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Sekiya M, Yahagi N, Tamura Y, Okazaki H, Igarashi M, Ohta K, Takanashi M, Kumagai M, Takase S, Nishi M, Takeuchi Y, Izumida Y, Kubota M, Ohashi K, Iizuka Y, Yagyu H, Gotoda T, Nagai R, Shimano H, Yamada N, Kadowaki T, Ishibashi S, Osuga JI. Hormone-sensitive lipase deficiency suppresses insulin secretion from pancreatic islets of Lepob/ob mice. Biochem Biophys Res Commun 2009; 387:511-5. [DOI: 10.1016/j.bbrc.2009.07.078] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2009] [Accepted: 07/13/2009] [Indexed: 01/26/2023]
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