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https://www.readbyqxmd.com/read/28344558/role-of-autonomic-nervous-system-and-orexinergic-system-on-adipose-tissue
#1
REVIEW
Giovanni Messina, Anna Valenzano, Fiorenzo Moscatelli, Monica Salerno, Antonio Lonigro, Teresa Esposito, Vincenzo Monda, Gaetano Corso, Antonietta Messina, Andrea Viggiano, Antonio I Triggiani, Sergio Chieffi, Giuseppe Guglielmi, Marcellino Monda, Giuseppe Cibelli
Adipose tissue, defined as white adipose tissue (WAT) and brown adipose tissue (BAT), is a biological caloric reservoir; in response to over-nutrition it expands and, in response to energy deficit, it releases lipids. The WAT primarily stores energy as triglycerides, whereas BAT dissipates chemical energy as heat. In mammals, the BAT is a key site for heat production and an attractive target to promote weight loss. The autonomic nervous system (ANS) exerts a direct control at the cellular and molecular levels in adiposity...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28344322/astragaloside-iv-attenuates-free-fatty-acid-induced-er-stress-and-lipid-accumulation-in-hepatocytes-via-ampk-activation
#2
Bing Zhou, Dan-Li Zhou, Xiao-Hong Wei, Rong-Yu Zhong, Jie Xu, Liao Sun
Although the pathogenesis of non-alcoholic fatty liver disease (NAFLD) is not completely understood, the increased influx of free fatty acids (FFAs) into the liver and the FFA-induced hepatic endoplasmic reticulum (ER) stress are two crucial pathogenic processes in the initiation and development of NAFLD. In this study we investigated the effects of astragaloside IV (AS-IV), a bioactive compound purified from Astragali Radix, on FFA-induced lipid accumulation in hepatocytes and elucidated the underlying mechanisms...
March 27, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28340693/protective-effects-of-bezafibrate-against-elaidic-acid-induced-accumulation-of-lipid-droplets-in-monocytic-cells
#3
S Haj Ahmed, W Kharroubi, A Zarrouk, F Brahmi, T Nury, G Lizard, M Hammami
Some factors related to diet, such as trans fatty acids (TFA), are known to be involved in the progression of atherosclerosis in humans. Thus, the aim of our study was (i) to evaluate the effects of three dietary free fatty acids (FFA) (elaidic (EA), oleic (OA) and palmitic acid (PA)) on U937 human monocytes, and (ii) to study the eventual benefits of bezafibrate (BZF), a pan-agonist for PPAR isoforms (α, γ and δ) in U937 cells treated with FFA. Morphologic and functional changes were investigated by microscopic and flow cytometric methods...
January 2017: Current Research in Translational Medicine
https://www.readbyqxmd.com/read/28334656/lipid-profiling-in-sewage-sludge
#4
Fenfen Zhu, Xuemin Wu, Luyao Zhao, Xiaohui Liu, Juanjuan Qi, Xueying Wang, Jiawei Wang
High value-added reutilization of sewage sludge from wastewater treatment plants (WWTPs) is essential in sustainable development in WWTPs. However, despite the advantage of high value reutilization, this process must be based on a detailed study of organics in sludge. We used the methods employed in life sciences to determine the profile of lipids (cellular lipids, free fatty acids (FFAs), and wax/gum) in five sludge samples obtained from three typical WWTPs in Beijing; these samples include one sludge sample from a primary sedimentation tank, two activated sludge samples from two Anaerobic-Anoxic-Oxic (A2/O) tanks, and two activated sludge samples from two membrane bioreactor tanks...
March 20, 2017: Water Research
https://www.readbyqxmd.com/read/28329765/structural-insights-into-adiponectin-receptors-suggest-ceramidase-activity
#5
Ieva Vasiliauskaité-Brooks, Remy Sounier, Pascal Rochaix, Gaëtan Bellot, Mathieu Fortier, François Hoh, Luigi De Colibus, Chérine Bechara, Essa M Saied, Christoph Arenz, Cédric Leyrat, Sébastien Granier
Adiponectin receptors (ADIPORs) are integral membrane proteins that control glucose and lipid metabolism by mediating, at least in part, a cellular ceramidase activity that catalyses the hydrolysis of ceramide to produce sphingosine and a free fatty acid (FFA). The crystal structures of the two receptor subtypes, ADIPOR1 and ADIPOR2, show a similar overall seven-transmembrane-domain architecture with large unoccupied cavities and a zinc binding site within the seven transmembrane domain. However, the molecular mechanisms by which ADIPORs function are not known...
March 22, 2017: Nature
https://www.readbyqxmd.com/read/28329547/lichen-planus-pigmentosus-and-lichen-planopilaris
#6
Gabriela Cobos, Randie H Kim, Shane Meehan, Nada Elbuluk
Lichen planus is an inflammatory skin conditionwith characteristic histopathological findings thathas many clinical variants. Recently, there have been25 cases reported in the literature of lichen planuspigmentosus (LPPi) that preceded the developmentof frontal fibrosing alopecia (FFA), which is a variantof lichen planopilaris (LPP). We review the literatureregarding LPPi, LPP, and FFA and present a case of a40-year-old African American woman with LPPi andLPP.
December 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28328710/fatty-acid-saturation-of-albumin-used-in-resuscitation-fluids-modulates-cell-damage-in-shock-in-vitro-results-using-a-novel-technique-to-measure-fatty-acid-binding-capacity
#7
Alexander H Penn, Michael A Dubick, Ivo P Torres Filho
The use of albumin for resuscitation has not proven as beneficial in human trials as expected from numerous animal studies. One explanation could be the practice of adding fatty acid (FA) during manufacture of pharmaceutical albumin. During ischemia, unbound free FAs (FFA) in the circulation could potentially induce cellular damage. We hypothesized that albumins with higher available binding capacities (ABC) for FFAs may prevent that damage. Therefore, we developed a technique to measure ABC, determined if pharmaceutical human serum albumin (HSA) has decreased ABC compared to FA-free bovine serum albumin (BSA), and if binding capacity would affect hemolysis when blood is mixed with exogenous FFA at levels similar to those observed in shock...
March 21, 2017: Shock
https://www.readbyqxmd.com/read/28323973/how-to-measure-adipose-tissue-insulin-sensitivity
#8
Esben Søndergaard, Ana Elena Espinosa De Ycaza, Maria Morgan-Bathke, Michael D Jensen
Background: Adipose tissue insulin resistance may be a proximate cause of hepatic and skeletal muscle insulin resistance by releasing excess FFA. However, no consensus exists on how to quantify adipose tissue insulin sensitivity. We compared three methods for measuring adipose tissue insulin sensitivity ranging from the complex multistep pancreatic clamp technique to the simple adipose tissue insulin resistance index (Adipo-IR). Methods: We completed studies of 25 adults with a wide range of insulin sensitivity...
January 31, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323955/rapid-onset-of-diabetic-ketoacidosis-following-sglt2-inhibition-in-a-patient-with-unrecognized-acromegaly
#9
Marino Quarella, Daniel Walser, Michael Brändle, Jean-Yves Fournier, Stefan Bilz
Context: Diabetic ketoacidosis has been described as a rare complication of acromegaly and may be observed in 1% of affected patients. The well described direct lipolytic effect of growth hormone results in increased availability of free fatty acids (FFA) for hepatic ketogenesis and is an important pathogenic event. More recently, ketoacidosis has been identified as an important complication of sodium-glucose-transport-protein 2 inhibitors (SGLT2i). Increased pancreatic glucagon secretion, impaired renal ketone body clearance and an increase in FFA concentrations secondary to decreased insulin concentrations are likely precipitating factors...
February 21, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323924/guanabenz-sensitizes-pancreatic-%C3%AE-cells-to-lipotoxic-endoplasmic-reticulum-stress-and-apoptosis
#10
Baroj Abdulkarim, Miriam Hernangomez, Mariana Igoillo Esteve, Daniel A Cunha, Lorella Marselli, Piero Marchetti, Laurence Ladriere, Miriam Cnop
Deficient as well as excessive/prolonged endoplasmic reticulum (ER) stress signaling can lead to pancreatic β cell failure and the development of diabetes. Saturated free fatty acids (FFAs) such as palmitate induce lipotoxic ER stress in pancreatic β cells. One of the main ER stress response pathways is under the control of the protein kinase R-like endoplasmic reticulum kinase (PERK), leading to phosphorylation of the eukaryotic translation initiation factor 2 (eIF2α). The antihypertensive drug guanabenz has been shown to inhibit eIF2α dephosphorylation and protect cells from ER stress...
March 1, 2017: Endocrinology
https://www.readbyqxmd.com/read/28322833/treatment-of-novel-il17a-inhibitor-in-glioblastoma-implementing-3rd-generation-co-culture-cell-line-and-patient-derived-tumor-model
#11
Md Shamsuddin Sultan Khan, Muhammad Asif, Mohammed Khadeer Ahamed Basheer, Cheng Wei Kang, Fouad Saleh Al-Suede, Oon Chern Ein, Jing Tang, Aman Shah Abdul Majid, Amin Malik Shah Abdul Majid
Despite many treatment options, cancer remains a growing problem and has become the second leading cause of death globally. Here, we present fluorescence molecular tomography (FMT) data regarding the reversion of third generation co-cultured U87+DBTRG and patient-derived GBM tumor model after treatment with novel IL17A inhibitor named FLVM and FLVZ (organic derivatives of caffeic acid). FMT was used to determine tumor angiogenesis volume (assessment of number of blood vessel; the expression of angiogenic factors CD34 and other angiogenic cancer bio-markers) in U87+DBTRG and patient-derived gliomas...
March 18, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28322323/anti-inflammatory-properties-of-shikonin-contribute-to-improved-early-stage-diabetic-retinopathy
#12
Po-Lin Liao, Cheng-Hui Lin, Ching-Hao Li, Chi-Hao Tsai, Jau-Der Ho, George C Y Chiou, Jaw-Jou Kang, Yu-Wen Cheng
Diabetic retinopathy (DR), a major microvascular complication of diabetes, leads to retinal vascular leakage, neuronal dysfunction, and apoptosis within the retina. In this study, we combined STZ with whole-body hypoxia (10% O2) for quicker induction of early-stage retinopathy in C57BL/6 mice. We also compared the effects of a high glucose condition combined with hypoxia (1% O2) to a low glucose condition by using retinal pigment epithelial (RPE) cells, which are a crucial component of the outer blood-retinal barrier and the damage is related to retinopathy...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28320859/2-arachidonoylglycerol-ameliorates-inflammatory-stress-induced-insulin-resistance-in-cardiomyocytes
#13
Dipanjan Chanda, Yvonne Oligschlaeger, Ilvy Geraets, Yilin Liu, Xiaoqing Zhu, Jieyi Li, Miranda Nabben, Will Coumans, Joost J F P Luiken, Jan F C Glatz, Dietbert Neumann
Several studies have linked impaired glucose uptake and insulin resistance (IR) to functional impairment of the heart. Recently, endocannabinoids have been implicated in cardiovascular disease. However, the mechanisms involving endocannabinoid signaling, glucose uptake and IR in cardiomyocytes are understudied. Here, we report the endocannabinoid 2-Arachidonoylglycerol (2-AG) via stimulation of cannabinoid type-1 (CB1) receptor and Ca2+/Calmodulin-dependent protein kinase β (CaMKKβ) activates AMPK leading to increased glucose uptake...
March 20, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28318397/baiba-does-not-regulate-ucp-3-expression-in-human-skeletal-muscle-as-a-response-to-aerobic-exercise
#14
Flor E Morales, Jeffrey S Forsse, Thomas L Andre, Sarah K McKinley-Barnard, Paul S Hwang, Ian G Anthony, Grant M Tinsley, Mike Spillane, Peter W Grandjean, Alejandro Ramirez, Darryn S Willoughby
OBJECTIVE: β-Aminoisobutyric acid (BAIBA) has shown to modulate uncoupling protein (UCP)-1 expression, which is mainly expressed in white adipose tissue; however, no studies to date have analyzed its potential effect on the main uncoupling protein of skeletal muscle, UCP-3. The main goal of this study was to assess the potential effect of acute aerobic exercise on serum BAIBA and skeletal muscle UCP-3. The secondary goal was to assess the potential involvement of the transcription factors proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α) and peroxisome proliferator-activated receptor alpha (PPARα), as well as free fatty acids (FFAs) in UCP-3 expression...
March 20, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28317774/development-of-an-up-grading-process-to-produce-mlm-structured-lipids-from-sardine-discards
#15
R Morales-Medina, M Munio, A Guadix, E M Guadix
The aim of the work was to produce MLM structured lipids with caprylic acid (M) as medium chain fatty acid located at the external bonds of the glycerol backbone and concentrated polyunsaturated fatty acids (L) from sardine discards (Sardine pilchardus) in the central bond of the glycerol. To that end, the following steps were conducted: (i) fish oil extraction, (ii) Omega-3 free fatty acids (FFA) concentration (low temperature winterization), (iii) two-steps enzymatic esterification and (iv) triacylglycerols (TAG) purification (liquid column chromatography)...
August 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28314100/attenuated-mtor-signaling-and-enhanced-glucose-homeostasis-by-dietary-supplementation-with-lotus-seedpod-oligomeric-procyanidins-in-streptozotocin-stz-induced-diabetic-mice
#16
Xiaopeng Li, Yong Sui, Qian Wu, Bijun Xie, Zhida Sun
This study investigated the protective role of lotus seedpod oligomeric procyanidins (LSOPC) and synbiotics (Bifidobacterium Bb-12 and xylo-oligosaccharide) against high fat and streptozotocin (STZ)-induced diabetes. Administration of LSOPC or synbiotics have no effect on blood glucose in normal mice. Treatments with LSOPC for 12 weeks markedly reduced blood glucose, FFA, endotoxin, GHbA1c and improved glucose homeostasis, lipid metabolism and insulin level. In addition, administration of LSOPC significantly reversed the increase of mTOR and p66Shc in liver, skeletal muscle and white adipose tissue (WAT)...
March 17, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28306139/the-tir-bb-loop-mimetic-as-1-prevents-nonalcoholic-steatohepatitis-and-hepatic-insulin-resistance-by-inhibiting-nlrp3-asc-inflammasome-activation
#17
Xiaolu Wang, Yun Gao, Juan Song, Chao Tang, Man Wang, Linli Que, Li Liu, Guoqing Zhu, Qi Chen, Yong Yao, Yong Xu, Jiantao Li, Yuehua Li
BACKGROUND AND PURPOSE: Non-alcoholic steatohepatitis (NASH) is characterized by excessive intracellular lipid accumulation, inflammation and hepatic insulin resistance. Considering the rising prevalence of NASH worldwide, it is urgent to find novel interventional approaches. The pro-inflammatory cytokine IL-1β, generated and released from the Kupffer cells, is considered to be an initiating event in NASH. AS-1, a synthetic low-molecule mimetic to myeloid differentiation primary response gene 88 (MyD88), has been reported to disrupt the IL-1R-MyD88 interaction...
March 17, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28304146/liraglutide-acutely-suppresses-glucagon-lipolysis-and-ketogenesis-in-type-1-diabetes
#18
Manisha Garg, Husam Ghanim, Nitesh D Kuhadiya, Kelly Green, Jeanne Hejna, Sanaa Abuaysheh, Barrett Torre, Manav Batra, Antoine Makdissi, Ajay Chaudhuri, Paresh Dandona
In view of the occurrence of diabetic ketoacidosis associated with the use of sodium-glucose transport protein-2 (SGLT2) inhibitors in patients with type 1 diabetes (T1DM) and the relative absence of this complication in patients treated with liraglutide in spite of reductions in insulin doses, we investigated the effect of liraglutide on ketogenesis. Twenty-six patients with inadequately controlled T1DM were randomly divided into two groups of 13 patients each. After an overnight fast, patients were injected, subcutaneously, with either liraglutide 1...
March 17, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28303637/plasma-sfrp5-levels-correlate-with-determinants-of-the-metabolic-syndrome-in-chinese-adults
#19
Qiuyan Li, Hongyan Wang, Jinzhi Wang, Yeurui Lai, Lin Gao, Lu Lei, Gangyi Yang, Xin Liao, Xia Fang, Hua Liu, Ling Li
BACKGROUND: Secreted frizzled-related protein-5 (Sfrp5) is a novel adipokine and it has been found to link insulin resistance (IR) with diabetes. Animal studies have revealed the role of Sfrp5 in regulating lipid and glucose metabolism. The objective of this study was to investigate the relationship between Sfrp5 and the metabolic syndrome (MetS) in a cross-sectional study. METHODS: We conducted a series of cross-sectional studies of Chinese population including 194 control subjects and 90 MetS patients...
March 16, 2017: Diabetes/metabolism Research and Reviews
https://www.readbyqxmd.com/read/28300661/high-efficiency-extracellular-release-of-free-fatty-acids-from-aspergillus-oryzae-using-non-ionic-surfactants
#20
Koichi Tamano, Ai Miura, Hideaki Koike, Yasushi Kamisaka, Myco Umemura, Masayuki Machida
Free fatty acids (FFAs) are useful for generating biofuel compounds and functional lipids. Microbes are increasingly exploited to produce FFAs via metabolic engineering. However, in many microorganisms, FFAs accumulate in the cytosol, and disrupting cells to extract them is energy intensive. Thus, a simple cost-effective extraction technique must be developed to remove this drawback. We found that FFAs were released from cells of the filamentous fungus Aspergillus oryzae with high efficiency when they were cultured or incubated with non-ionic surfactants such as Triton X-100...
March 12, 2017: Journal of Biotechnology
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