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Fatty acid oxidation

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https://www.readbyqxmd.com/read/29783176/%C3%AF-3-and-folic-acid-act-against-depressive-like-behavior-and-oxidative-damage-in-the-brain-of-rats-subjected-to-early-or-late-life-stress
#1
Gislaine Z Réus, Amanda L Maciel, Helena M Abelaira, Airam B de Moura, Thays G de Souza, Thais R Dos Santos, Ana Caroline Darabas, Murilo Parzianello, Danyela Matos, Mariane Abatti, Ana Carolina Vieira, Vanessa Fucillini, Monique Michels, Felipe Dal-Pizzol, João Quevedo
OBJECTIVES: To investigate the antidepressant and antioxidant effects of omega-3, folic acid and n-acetylcysteine (NAC) in rats which were subjected to early or late life stress. METHODS: Early stress was induced through maternal deprivation (MD), while late life stress was induced using the chronic mild stress (CMS) protocol. Young rats which were subjected to MD and the adult rats which were subjected to CMS were treated with omega-3 fatty acids (0.72 g/kg), NAC (20 mg/kg) or folic acid (50 mg/kg) once/day, for a period of 20 days...
March 30, 2018: Nutrition
https://www.readbyqxmd.com/read/29782551/structural-insights-on-the-efficient-catalysis-of-hydroperoxide-reduction-by-ohr-crystallographic-and-molecular-dynamics-approaches
#2
Erika Piccirillo, Thiago G P Alegria, Karen F Discola, José R R Cussiol, Renato M Domingos, Marcos A de Oliveira, Leandro de Rezende, Luis E S Netto, Antonia T-do Amaral
Organic hydroperoxide resistance (Ohr) enzymes are highly efficient Cys-based peroxidases that play central roles in bacterial response to fatty acid hydroperoxides and peroxynitrite, two oxidants that are generated during host-pathogen interactions. In the active site of Ohr proteins, the conserved Arg (Arg19 in Ohr from Xylella fastidiosa) and Glu (Glu51 in Ohr from Xylella fastidiosa) residues, among other factors, are involved in the extremely high reactivity of the peroxidatic Cys (Cp) toward hydroperoxides...
2018: PloS One
https://www.readbyqxmd.com/read/29781527/the-role-of-dichloroacetate-in-improving-acute-hypoxic-tolerance-and-cardiac-function-translation-to-failing-hearts
#3
Da Hye Kim, Shelly Chauhan
Cardiac metabolism depends on a high rate of ATP production to maintain its myocardial pump function. Under physiological conditions, more than 70% of ATP generated in the heart is derived from beta oxidation of fatty acids (FA) in the mitochondria. This article is protected by copyright. All rights reserved.
May 21, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29781410/the-addition-of-docosahexaenoic-acid-dha-and-antioxidants-glutathione-peroxidase-and-superoxide-dismutase-in-extenders-to-epididymal-sperm-cryopreservation-in-bulls
#4
João D A Losano, Daniel S R Angrimani, Bruno R Rui, Luana C Bicudo, Andressa Dalmazzo, Bárbara C S Silva, Carlos H C Viana, Camilla M Mendes, Mayra E O A Assumpção, Valquiria H Barnabe, Marcilio Nichi
SummaryThe cryopreservation of epididymal sperm is an important technique that allows genetic material to be preserved, even post mortem. However, cryopreservation leads to increased oxidative stress and impaired sperm viability. Polyunsaturated fatty acid (PUFA) supplementation may improve certain sperm characteristics, but it also makes sperm more susceptible to oxidative stress, therefore adding antioxidants that counteract oxidative stress has become an option. In this context, this study aimed to evaluate the effect of the interaction between docosahexaenoic acid (DHA) and antioxidants on the quality after the cryopreservation of epididymal bull sperm...
May 21, 2018: Zygote: the Biology of Gametes and Early Embryos
https://www.readbyqxmd.com/read/29778008/plasma-metabolic-changes-in-chinese-hiv-infected-patients-receiving-lopinavir-ritonavir-based-treatment-implications-for-hiv-precision-therapy
#5
Xiaolin Li, Tong Wu, Yongjun Jiang, Zining Zhang, Xiaoxu Han, Wenqing Geng, Haibo Ding, Jing Kang, Qi Wang, Hong Shang
OBJECTIVES: The goal of this study is to profile the metabolic changes in the plasma of HIV patients receiving lopinavir/ritonavir (LPV/r)-based highly active antiretroviral therapy (HAART) relative to their treatment-naïve phase, aimed to identify precision therapy for HIV for improving prognosis and predicting dyslipidemia caused by LPV/r. METHODS: 38 longitudinal plasma samples were collected from 19 HIV-infected patients both before and after antiretroviral therapy, and 18 samples from healthy individuals were used as controls...
May 16, 2018: Cytokine
https://www.readbyqxmd.com/read/29777706/n-3-polyunsaturated-fatty-acids-ameliorate-hepatic-steatosis-via-the-ppar-%C3%AE-cpt-1%C3%AE-pathway-in-a-mouse-model-of-parenteral-nutrition
#6
Feng Tian, Jiwei Wang, Haifeng Sun, Jianbo Yang, Peng Wang, Songlin Wan, Xuejin Gao, Li Zhang, Jieshou Li, Xinying Wang
Parenteral nutrition (PN) is one of the basic therapies for patients with intestinal failure; however, hepatic steatosis associated with PN limits the long-term use of PN. N-3 polyunsaturated fatty acids (PUFAs) have been used to improve clinical outcomes of patients receiving PN; however, the mechanisms by which n-3 PUFAs ameliorate hepatic steatosis remain unclear. In the present study, C57BL/6J mice were randomly assigned to three treatment groups, namely, enteral nutrition (EN), n-3 PUFAs, and n-6 PUFAs...
May 16, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29777569/improving-metabolic-stability-with-deuterium-the-discovery-of-hwl-066-a-potent-and-long-acting-free-fatty-acid-receptor-1-agonists
#7
Chunxia Liu, Zheng Li, Wei Shi, Huilan Li, Nasi Wang, Yuxuan Dai, Chen Liao, Wenlong Huang, Hai Qian
The free fatty acid receptor 1 (FFA1) is a potential target due to its function in enhancing of glucose-stimulated insulin secretion. The FFA1 agonist GW9508 has great potential for the treatment of type 2 diabetes mellitus, but it has been suffering from high plasma clearance probably because the phenylpropanoic acid is vulnerable to β-oxidation. To identify orally available analog without influence on the unique pharmacological mechanism of GW9508, we tried to interdict the metabolically labile group by incorporating two deuterium atoms at the α-position of phenylpropionic acid affording compound 4 (HWL-066)...
May 18, 2018: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/29777200/a-map-of-the-pgc-1%C3%AE-and-nt-pgc-1%C3%AE-regulated-transcriptional-network-in-brown-adipose-tissue
#8
Ji Suk Chang, Sujoy Ghosh, Susan Newman, J Michael Salbaum
Transcriptional coactivator PGC-1α and its splice variant NT-PGC-1α play crucial roles in regulating cold-induced thermogenesis in brown adipose tissue (BAT). PGC-1α and NT-PGC-1α are highly induced by cold in BAT and subsequently bind to and coactivate many transcription factors to regulate expression of genes involved in mitochondrial biogenesis, fatty acid oxidation, respiration and thermogenesis. To identify the complete repertoire of PGC-1α and NT-PGC-1α target genes in BAT, we analyzed genome-wide DNA-binding and gene expression profiles...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29775960/strategies-to-decrease-oxidative-stress-biomarker-levels-in-human-medical-conditions-a-meta-analysis-on-8-iso-prostaglandin-f-2%C3%AE
#9
Thomas J van 't Erve
The widespread detection of elevated oxidative stress levels in many medical conditions has led to numerous efforts to design interventions to reduce its effects. Efforts have been wide-ranging, from dietary changes to administration of antioxidants, supplements, e.g., omega-3-fatty acids, and many medications. However, there is still no systemic assessment of the efficacy of treatments for oxidative stress reduction across a variety of medical conditions. The goal of this meta-analysis is, by combining multiple studies, to quantitate the change in the levels of the popular oxidative stress biomarker 8-iso-prostaglandin F2α (8-iso-PGF2α ) after a variety of treatment strategies in human populations...
May 9, 2018: Redox Biology
https://www.readbyqxmd.com/read/29775926/chlorophyll-a-%C3%AF-uorescence-and-transcriptome-reveal-the-toxicological-effects-of-bisphenol-a-on-an-invasive-cyanobacterium-cylindrospermopsis-raciborskii
#10
Rong Xiang, Junqiong Shi, Hongbo Zhang, Congcong Dong, Li Liu, JunKe Fu, Xinyu He, Yanjun Yan, Zhongxing Wu
Bisphenol A has attracted worldwide attention due to its harmful effects on humans, animals and plants. In this study, the toxicological effects of BPA on Cylindrospermopsis raciborskii were assessed based on chlorophyll a fluorescence and transcriptome analyses. The results showed that the growth of C. raciborskii was significantly inhibited when BPA exceeded 0.1 mg L-1 . A marked rise of phase J was observed at a concentration greater than 0.1 mg L-1 , while a K phase appeared at 20 mg L-1 . The chlorophyll a fluorescence parameters of RC/CS0 , F0 , φP0 , φE0 , and ψ0 , underwent a significant decline under all treatments of BPA, whereas a significant increase in both VJ and M0 occurred under all concentrations of BPA...
May 9, 2018: Aquatic Toxicology
https://www.readbyqxmd.com/read/29775890/triterpenic-acids-enriched-fraction-from-cyclocarya-paliurus-attenuates-non-alcoholic-fatty-liver-disease-via-improving-oxidative-stress-and-mitochondrial-dysfunction
#11
Meng-Ge Zhao, Xue-Ping Sheng, Ya-Ping Huang, Yi-Ting Wang, Cui-Hua Jiang, Jian Zhang, Zhi-Qi Yin
The effects of triterpenic acids-enriched fraction from Cyclocarya paliurus (CPT) on nonalcoholic fatty liver disease (NAFLD) were investigated using in vivo and in vitro models. In high fat diet-induced Wister rats, CPT significantly increased superoxide dismutase (SOD) activity and glutathione/oxidized glutathione (GSH/GSSG) ratio, reduced malondialdehyde (MDA) and protein carbonyl (PCO) levels. Moreover, CPT restored mitochondrial membrane potential dysfunction, decreased cytochrome P450 enzyme 2E1 (CYP2E1) activity, improved nuclear factor erythroid 2-related factor 2 (Nrf2) and Nrf2-mediated antioxidant enzyme heme oxygenase1 (HO-1) expression...
May 15, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29775706/purification-and-characterization-of-an-organic-solvent-tolerant-and-detergent-stable-lipase-from-haloferax-mediterranei-cncmm-50101
#12
Siham Akmoussi-Toumi, Souad Khemili-Talbi, Imen Ferioune, Salima Kebbouche-Gana
The present study investigates the purification and biochemical characterization of an extracellular lipase (HML) from Haloarchaea Haloferax mediterranei strain ATS1, isolated from the Sebkha (Medea, Algeria). The pure protein was obtained with ammonium sulfate precipitation (40-70%)-dialysis and UNO Q-6 FPLC, and characterized biochemically. Matrix assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF/MS) analysis revealed that the purified enzyme was a monomer, with a molecular mass of 45,011...
May 15, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29775616/amelioration-of-uvb-induced-oxidative-stress-and-inflammation-in-fat-1-transgenic-mouse-skin
#13
Hye-Won Yum, Seong Hoon Kim, Jing X Kang, Young-Joon Surh
ω-3 polyunsaturated fatty acids (PUFAs), which are abundant in some fish oils, are known to scavenge lipid peroxyl radicals and increase host immunoresponsiveness. As UVB-induced oxidative stress and inflammation have been implicated in apoptotic cell death, this study was designed to investigate the anti-inflammatory, anti-oxidative, and anti-apoptotic capacity of fat-1 transgenic mice capable of converting ω-6 to ω-3 PUFAs. Wild-type (WT) C57BL/6 mice and fat-1 mice were maintained on the AIN-93 diet supplemented with 10% safflower oil rich in ω-6 PUFAs for 5 weeks...
May 15, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29774758/evaluation-of-natural-bv-as-a-novel-feed-additive-in-fast-growing-broilers
#14
Da Hye Kim, Sang Mi Han, Moung Cheul Keum, Sang Lee, Byoung Ki An, Sang-Rak Lee, Kyung-Woo Lee
1. The present study was designed to evaluate purified bee venom (BV) as an alternative to antibiotics in broiler chickens. The experimental treatment diets were formulated by adding BV into a maize-soybean meal-based diet to give 0, 10, 50, 100, and 500 μg BV per kg of diet. 2. Dietary BV quadratically improved (P<0.05) feed conversion ratio and increased body weight gain at 1-21 days as level in diet increased. Higher BV levels lowered relative weight of spleen (linear and quadratic, P<0.05), bursa of Fabricius (quadratic, P<0...
May 18, 2018: British Poultry Science
https://www.readbyqxmd.com/read/29773865/perlecan-a-heparan-sulfate-proteoglycan-regulates-systemic-metabolism-with-dynamic-changes-in-adipose-tissue-and-skeletal-muscle
#15
Yuri Yamashita, Satoshi Nakada, Toshinori Yoshihara, Takeshi Nara, Norihiko Furuya, Takashi Miida, Nobutaka Hattori, Eri Arikawa-Hirasawa
Perlecan (HSPG2), a heparan sulfate proteoglycan, is a component of basement membranes and participates in a variety of biological activities. Here, we show physiological roles of perlecan in both obesity and the onset of metabolic syndrome. The perinatal lethality-rescued perlecan knockout (Hspg2-/- -Tg) mice showed a smaller mass and cell size of white adipose tissues than control (WT-Tg) mice. Abnormal lipid deposition, such as fatty liver, was not detected in the Hspg2-/- -Tg mice, and those mice also consumed more fat as an energy source, likely due to their activated fatty acid oxidation...
May 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29773670/high-%C3%AE-tocopherol-dosing-increases-lipid-metabolism-by-changing-redox-state-in-damaged-rat-gastric-mucosa-and-liver-after-ethanol-treatment
#16
Marisela Olguín-Martínez, Diego R Hernández-Espinosa, Rolando Hernández-Muñoz
Regeneration of ethanol-injured rat gastric mucosa must undergo changes in major metabolic pathways to achieve DNA replication and cell proliferation. These events are highly dependent on glucose utilization and inhibited by vitamin E (α-tocopherol) administration. Therefore, this study was aimed at assessing lipid metabolism in the gastric mucosa and ethanol-induced gastric damage and the effect of α-tocopherol administration. For this, rates of fatty acid β-oxidation and lipogenesis were tested in gastric mucosa samples...
May 17, 2018: Clinical Science (1979-)
https://www.readbyqxmd.com/read/29772667/evaluation-of-energy-expenditure-and-oxidation-of-energy-substrates-in-adult-males-after-intake-of-meals-with-varying-fat-and-carbohydrate-content
#17
Edyta Adamska-Patruno, Lucyna Ostrowska, Anna Golonko, Barbara Pietraszewska, Joanna Goscik, Adam Kretowski, Maria Gorska
Obesity is a result of positive energy balance. The aim of this study was to measure (in crossover trials) the energy expenditure and oxidation of glucose and lipids, both at the fasting state and after an intake of meals with a varying macronutrient content, in normal-weight and overweight/obese people. In the study, 46 healthy adult males (23 with normal body weight and 23 overweight/obese), aged 21⁻58, were examined. During two consecutive visits, subjects received isocaloric standardized meals (450 kcal) with different content of basic nutrients...
May 16, 2018: Nutrients
https://www.readbyqxmd.com/read/29772372/palmitate-induces-nitric-oxide-production-and-inflammatory-cytokine-expression-in-zebrafish
#18
Seon-Heui Cha, Yongha Hwang, Kil-Nam Kim, Hee-Sook Jun
Inflammation markers in zebrafish embryos reflect a toxic response that is common to other animal models and humans. Free fatty acids (FFAs) are known to cause damage in various tissues by inducing inflammation. In this study, we investigated whether a FFA (palmitate) induces inflammation in zebrafish embryos. Nitrous oxide (NO) production and cyclooxygenase-2 (COX-2) mRNA expression were increased in palmitate-treated zebrafish embryos in a dose-dependent manner. mRNA expression of pro-inflammatory cytokines, interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF- α), were also increased...
May 14, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29772225/maternal-one-carbon-metabolism-through-increased-oxidative-stress-and-disturbed-angiogenesis-can-influence-placental-apoptosis-in-preeclampsia
#19
REVIEW
Vaishali V Kasture, Deepali P Sundrani, Sadhana R Joshi
Adequate maternal nutrition is critical for a healthy pregnancy outcome and poor maternal nutrition is known to be associated with pregnancy complications like preeclampsia. We have earlier demonstrated that there is an imbalance in the levels of micronutrients (folate and vitamin B12 ) along with low levels of long chain polyunsaturated fatty acids (LCPUFA) and high homocysteine levels in women with preeclampsia. Homocysteine is known to be involved in the formation of free radicals leading to increased oxidative stress...
May 14, 2018: Life Sciences
https://www.readbyqxmd.com/read/29771428/ampk-regulates-energy-metabolism-through-the-sirt1-signaling-pathway-to-improve-myocardial-hypertrophy
#20
H-W Dong, L-F Zhang, S-L Bao
OBJECTIVE: We investigated the correlations of adenosine monophosphate-activated protein kinase (AMPK), Silence information regulator 1 (SIRT1) and energy metabolism with myocardial hypertrophy. MATERIALS AND METHODS: Myocardial hypertrophy experimental model was established via transverse aortic constriction (TAC)-induced myocardial hypertrophy and phenylephrine (PE)-induced hypertrophic myocardial cell culture. After activation of AMPK, the messenger ribonucleic acid (mRNA) expressions in myocardial tissue- and myocardial cell hypertrophy-related genes, atrial natriuretic peptide (ANP) and β-myosin heavy chain (β-MHC), were detected...
May 2018: European Review for Medical and Pharmacological Sciences
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