Filtered By:
Nutrition: Diets

This page shows you your search results in order of relevance.

Order by Relevance | Date

Total 445 results found since Jan 2013.

High Fat and Diet Induced Obesity
i-FectTM Delivers Again!Research shows that rats and humans on a high-fat diet (HFD) are less sensitive to satiety signals known to act via vagal afferent pathways. Impaired vagal afferent responsiveness to both gastric satiety hormones (CCK and leptin) and mechanical stimulation raises the possibility that changes in electrophysiological properties may be the underlying mechanism responsible for impaired vagal responsiveness to a wide variety of satiety signals.Potassium channels play a central role. To demonstrate this researchers used ouri-Fect siRNA Transfection Kit to silence TRESK and TASK1 to understand their impact...
Source: siRNA and DsiRNA Transfection Efficiency - September 16, 2019 Category: Neuroscience Tags: iFect in vivo siRNA intrathecal delivery of siRNA RNAi TRESK Source Type: news

Evaluation of an Integrin αvβ3 Radiotracer, 18FF-FPP-RGD2, for Monitoring Pharmacological Effects of Integrin αv siRNA in the NASH Liver
ConclusionThis study suggests that [18F]F-FPP-RGD2 PET imaging is a promising radiotracer for monitoring hepatic integrin αv protein levels and hepatic function in NASH pathology.
Source: Nuclear Medicine and Molecular Imaging - March 7, 2023 Category: Nuclear Medicine Source Type: research

Evaluation of an Integrin α < sub > v < /sub > β < sub > 3 < /sub > Radiotracer, < sup > 18 < /sup > FF-FPP-RGD < sub > 2 < /sub > , for Monitoring Pharmacological Effects of Integrin α < sub > v < /sub > siRNA in the NASH Liver
CONCLUSION: This study suggests that [18F]F-FPP-RGD2 PET imaging is a promising radiotracer for monitoring hepatic integrin αv protein levels and hepatic function in NASH pathology.PMID:37483876 | PMC:PMC10359219 | DOI:10.1007/s13139-023-00791-9
Source: Molecular Medicine - July 24, 2023 Category: Molecular Biology Authors: Shuichi Hiroyama Keiko Matsunaga Miwa Ito Hitoshi Iimori Ippei Morita Jun Nakamura Eku Shimosegawa Kohji Abe Source Type: research

A fluorinated peptide with high serum- and lipid-tolerence for the delivery of siRNA drugs to treat obesity and metabolic dysfunction
Biomaterials. 2022 Apr 28;285:121541. doi: 10.1016/j.biomaterials.2022.121541. Online ahead of print.ABSTRACTObesity is the major risk factor for metabolic diseases such as fatty liver, hyperlipidemia and insulin resistance. Beige fat has been recognized as a therapeutic target considering its great potential to burn energy. Since the evolutionary discovery of RNA interference and its utilization for gene knockdown in mammalian cells, a remarkable progress has been achieved in siRNA-based therapeutics. However, efficient delivery of siRNA into adipose tissues or differentiated adipocytes is challenging due to high lipid co...
Source: Biomaterials - May 9, 2022 Category: Materials Science Authors: Jin Qiu Qianqian Fan Sainan Xu Dongmei Wang Juntong Chen Sainan Wang Tianhui Hu Xinran Ma Yiyun Cheng Lingyan Xu Source Type: research

Research Articles siRNA nanoparticles targeting CaMKII{gamma} in lesional macrophages improve atherosclerotic plaque stability in mice
Atherosclerotic lesional macrophages express molecules that promote plaque progression, but lack of mechanisms to therapeutically target these molecules represents a major gap in translational cardiovascular research. Here, we tested the efficacy of a small interfering RNA (siRNA) nanoparticle (NP) platform targeting a plaque-destabilizing macrophage molecule—Ca2+/calmodulin-dependent protein kinase (CaMKII). CaMKII becomes activated in advanced human and mouse plaque macrophages and drives plaque necrosis by suppressing the expression of the efferocytosis receptor MerTK. When macrophage-targeted siCamk2g NPs were ad...
Source: Science Translational Medicine - July 21, 2020 Category: Biomedical Science Authors: Tao, W., Yurdagul, A., Kong, N., Li, W., Wang, X., Doran, A. C., Feng, C., Wang, J., Islam, M. A., Farokhzad, O. C., Tabas, I., Shi, J. Tags: Research Articles Source Type: research

TonEBP Suppresses the HO-1 Gene by Blocking Recruitment of Nrf2 to Its Promoter
Discussion Dynamic changes in the functional phenotype of macrophages are associated with pathogenesis of inflammatory diseases (5–7). TonEBP primes macrophages toward an M1 phenotype, which has pro-inflammatory properties. TonEBP does this by promoting expression of pro-inflammatory genes via interaction with NF-κB (36) and by binding directly to the promoter (37, 64). In addition, TonEBP suppresses expression of the anti-inflammatory cytokine IL-10 by limiting chromatin access to the promoter (37). The pro-inflammatory function of TonEBP suggests that inhibiting its expression or activation could suppres...
Source: Frontiers in Immunology - April 17, 2019 Category: Allergy & Immunology Source Type: research

Naringenin Produces Neuroprotection Against LPS-Induced Dopamine Neurotoxicity via the Inhibition of Microglial NLRP3 Inflammasome Activation
Conclusions: This study demonstrated that NAR targeted microglial NLRP3 inflammasome to protect DA neurons against LPS-induced neurotoxicity. These findings suggest NAR might hold a promising therapeutic potential for PD. Background Parkinson's disease (PD) is the second most prevalent central nervous system (CNS) degenerative disease. It is characterized by slow and progressive loss of dopamine (DA) neurons in the midbrain substantia nigra (SN) with the accumulation of α-synuclein in Lewy bodies and neuritis (1). Although the etiology of PD remains unclear, amounts of studies have suggested that ne...
Source: Frontiers in Immunology - April 30, 2019 Category: Allergy & Immunology Source Type: research

NCOA4 Mediates Mobilization of Hepatic Iron Stores after Blood Loss
The intracellular protein NCOA4 mediates the autophagic degradation of ferritin in vitro (Mancias et al., Nature 2014; Dowdle et al., Nat Cell Biol 2014); mice with global Ncoa4 disruption show hyperferremia, microcytic anemia, and ferritin accumulation in multiple organs, including liver (Bellelli et al., Cell Rep 2016). Here, we dissect the requirement for NCOA4 in hepatic iron mobilization after acute blood loss, using Ncoa4-targeting siRNA that was conjugated to triantennary N-acetylgalactosamine (GalNAc-Ncoa4 siRNA) to promote uptake by hepatocytes. On experimental day 0, 8-week-old female C57BL/6N mice underwent a si...
Source: Blood - November 21, 2018 Category: Hematology Authors: Li, X., Lozovatsky, L., Liu, D., Ayala-Lopez, N., Finberg, K. E. Tags: 102. Regulation of Iron Metabolism: Poster I Source Type: research

Genetic Regulation of Liver Metabolites and Transcripts Linking to Biochemical-Clinical Parameters
Conclusion In summary, this study is the first to combine metabolomics, transcriptomics, and genome-wide association studies in a porcine model. Our results improve understanding of the genetic regulation of metabolites which link to transcripts and finally biochemical-clinical parameters. Further, high-performance profiling of metabolites as intermediate phenotypes is a potentially powerful approach to uncover how genetic variation affects metabolic and health status. Our results advance knowledge in areas of biomedical and agricultural interest and identify potential correlates of biomarkers, SNPs-metabolites, SNPs-tran...
Source: Frontiers in Genetics - April 16, 2019 Category: Genetics & Stem Cells Source Type: research

Tangshen Formula Alleviates Hepatic Steatosis by Inducing Autophagy Through the AMPK/SIRT1 Pathway
Conclusion In conclusion, the present study demonstrated that autophagy was involved in relieving the effects of TSF against NAFLD, which were mediated by the AMPK/SIRT1 pathway (Figure 7D). These findings may improve our current understanding of the role of TSF in treating hepatic steatosis and provide an experimental basis for the clinical application of TSF in NAFLD and its related metabolic syndrome. Ethics Statement This study was carried out in accordance with the recommendations in the Guide for the Care and Use of Laboratory Animals of the National Institutes of Health. The protocol was approved by the Ethics Co...
Source: Frontiers in Physiology - April 25, 2019 Category: Physiology Source Type: research

Site-specific intestinal DMT1 silencing to mitigate iron absorption using pH-sensitive multi-compartmental nanoparticulate oral delivery system
We report a novel pH-sensitive multi-compartmental nanoparticulate (MCP) oral delivery system that encapsulates siRNA for silencing the divalent metal transporter 1 (DMT1) gene, a primary iron transporter highly expressed in the intestine. The gelatin nanoparticles-coated with Eudragit® L100–55 are able to protect siRNA from intracellular degradation and allow for sustained release of siRNA in the cytosol. When orally-administered, Eudragit® L100–55 based MCPs containing DMT1 siRNA/gelatin NPs specifically and significantly decreased the expression of DMT1 mRNA in the duodenum, which consequently decreased intestinal...
Source: Nanomedicine: Nanotechnology, Biology and Medicine - October 16, 2019 Category: Nanotechnology Source Type: research

Chemerin/CMKLR1 Axis Promotes Inflammation and Pyroptosis by Activating NLRP3 Inflammasome in Diabetic Cardiomyopathy Rat
In this study, we investigated the role of the chemerin/CMKLR1 axis in mediating inflammation and cell death in DCM. Sprague–Dawley rats, treated with a high-fat diet and low-dose of streptozotocin, were used as a DCM model. CMKLR1 expression was knocked down by siRNA (CMKLR1-siRNA) to evaluate the role of CMKLR1 in DCM. Chemerin-treated H9c2 cells were used to investigate the factors acting downstream of the chemerin/CMKLR1 axis. LDH release and EthD-III staining were used to measure the ratio of cell death in vitro. CMKLR1-siRNA and siRNA against nucleotide-binding oligomerization domain-like receptors 3 (NLRP3-siRNA) ...
Source: Frontiers in Physiology - April 22, 2020 Category: Physiology Source Type: research

Lipopolysaccharide promoted proliferation and adipogenesis of preadipocytes through JAK/STAT and AMPK-regulated cPLA2 expression.
Authors: Chang CC, Sia KC, Chang JF, Lin CM, Yang CM, Huang KY, Lin WN Abstract The proliferation and adipogenesis of preadipocytes played important roles in the development of adipose tissue and contributed much to the processes of obesity. On the other hand, lipopolysaccharide (LPS), also known as endotoxin, is a key outer membrane component of gram-negative bacteria in the gut microbiota, and has a dominant role in linking inflammation to high-fat diet-induced metabolic syndrome. Studies suggested the potential roles of LPS in hepatic steatosis and in obese mice models. However, the molecular mechanisms underlyi...
Source: International Journal of Medical Sciences - January 22, 2019 Category: Biomedical Science Tags: Int J Med Sci Source Type: research