keyword
MENU ▼
Read by QxMD icon Read
search

Arachidonic

keyword
https://www.readbyqxmd.com/read/28822809/inhibition-of-soluble-epoxide-hydrolase-lowers-portal-hypertension-in-cirrhotic-rats-by-ameliorating-endothelial-dysfunction-and-liver-fibrosis
#1
Wensheng Deng, Yiming Zhu, Jiayun Lin, Lei Zheng, Chihao Zhang, Meng Luo
Epoxyeicostrienoic acids (EETs) are arachidonic acid derived meditators which are catalyzed by soluble epoxide hydrolase (sEH) to less active dihydroeicostrienoics acids (DHETS). The aim of our study is to investigate the effects of sEH inhibition on hepatic and systemic hemodynamics, hepatic endothelial dysfunction, and hepatic fibrosis in CCl4 cirrhotic rats. The sEH inhibitor,trans-4-{4-[3-(4-trifluoromethoxyphenyl)-ureido]cyclohexyloxy}benzoic acid (t-TUCB) was administered to stabilize hepatic EETs by gavage at a dose of 1mg/kg/d...
August 16, 2017: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/28822080/soluble-epoxide-hydrolase-inhibition-attenuates-mptp-induced-neurotoxicity-in-the-nigrostriatal-dopaminergic-system-involvement-of-%C3%AE-synuclein-aggregation-and-er-stress
#2
Hui-Ju Huang, Yi-Ting Wang, Hui-Ching Lin, Yi-Hsuan Lee, Anya Maan-Yuh Lin
Soluble epoxide hydrolase (sEH) is widely expressed in the mammalian brain and possesses dual enzymatic activities, including C-terminal epoxide hydrolase (C-EH) which degrades epoxyeicosatrienoic acid (EET), a beneficial arachidonic acid metabolite. In the present study, the neuroprotective effect of sEH inhibition on 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced neurodegeneration of nigrostriatal dopaminergic system was investigated using genetic and pharmacological approaches. MPTP (15 mg/kg) was intraperitoneally injected in sEH knockout (KO) mice and C57BL/6J mice as wild-type (WT) mice...
August 18, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28821830/disease-syndrome-combination-modeling-metabolomic-strategy-for-the-pathogenesis-of-chronic-kidney-disease
#3
Shasha Li, Peng Xu, Ling Han, Wei Mao, Yiming Wang, Guoan Luo, Nizhi Yang
Conventional disease animal models have limitations on the conformity to the actual clinical situation. Disease-syndrome combination (DS) modeling may provide a more efficient strategy for biomedicine research. Disease model and DS model of renal fibrosis in chronic kidney disease were established by ligating the left ureter and by ligating unilateral ureteral combined with exhaustive swimming, respectively. Serum metabolomics was conducted to evaluate disease model and DS model by using ultra performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821715/invasive-trophoblast-promote-stromal-fibroblast-decidualization-via-profilin-1-and-alox5
#4
E M Menkhorst, M L Van Sinderen, K Rainczuk, C Cuman, A Winship, E Dimitriadis
During the establishment of pregnancy, extravillous trophoblast (EVT) must invade into the uterine decidua to facilitate decidual artery remodelling to create the placental blood supply. The local decidual environment is thought to regulate trophoblast invasion, however these interactions are poorly defined in humans. Recent evidence in women suggests impaired decidualization is associated with miscarriage and preeclampsia. Primary human endometrial stromal cells (HESC) and first trimester extravillous trophoblast (EVTs) were used to assess the effect of EVT-secreted factors on HESC decidualization, adhesion, proliferation and migration...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819782/the-effects-of-%C3%AE-d-mannuronic-acid-m2000-as-a-novel-nsaid-on-cox1-and-cox2-activities-and-gene-expression-in-ankylosing-spondylitis-patients-and-the-murine-monocyte-macrophage-j774-cell-line
#5
Fahimeh Jafarnezhad-Ansariha, Mir Saeed Yekaninejad, Ahmad-Reza Jamshidi, Reza Mansouri, Mahdi Vojdanian, Mahdi Mahmoudi, Mohammad Javad Fattahi, Seyed Naser Hashemi, Bernd H A Rehm, Hidenori Matsuo, Emanuela Esposito, Salvatore Cuzzocrea, Abbas Mirshafiey
Ankylosing spondylitis (AS) is a debilitating chronic inflammatory disease with genetic predisposition, which is characterized by the involvement of spine and sacroiliac joints. Due to the relatively unsuccessful treatments, we designed β-D-mannuronic (M2000) with the beneficial effects in various experimental models as a novel non-steroidal anti-inflammatory drug (NSAID). The aims of our present study were: first, to compare the therapeutic effects of M2000, as a novel designed NSAID, with naproxen and placebo in Iranian patients with AS during 12 weeks; second, to evaluate the effect of M2000 on gene expression of cyclooxygenase enzyme (COX-1/COX-2), a key enzyme in the initiation of inflammatory pathways in AS patients; and third, to assess the activity of COX-1 and COX-2 enzymes in the presence/absence of M2000 at the different doses in the murine macrophage, J774 cell line...
August 17, 2017: Inflammopharmacology
https://www.readbyqxmd.com/read/28819197/mortierella-alpina-cs10e4-an-oleaginous-fungal-endophyte-of-crocus-sativus-l-enhances-apocarotenoid-biosynthesis-and-stress-tolerance-in-the-host-plant
#6
Zahoor Ahmed Wani, Amit Kumar, Phalisteen Sultan, Kushal Bindu, Syed Riyaz-Ul-Hassan, Nasheeman Ashraf
Crocus sativus is the only plant species which produces apocarotenoids like crocin, picrocrocin and safranal in significant amounts. These compounds impart organoleptic properties to saffron (dried stigmas of Crocus flower) making it world's costliest spice. Crocus apocarotenoids have tremendous medicinal properties as well. Effect of endophytes on Crocus apocarotenoid production and the molecular mechanism involved has not been reported so far. Here we studied the effect of an oleaginous fungal endophyte, Mortierella alpina CS10E4 on Crocus growth, apocarotenoid metabolism and tolerance to corm rot disease...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818745/a-systematic-review-on-the-role-of-eicosanoid-pathways-in-rheumatoid-arthritis
#7
REVIEW
Malvina Hoxha
BACKGROUND: Rheumatoid arthritis is characterized by the production of eicosanoids, cytokines, adhesion molecules, infiltration of T and B lymphocytes in the synovium and oxygen reduction accompanied by the cartilage degradation. Eicosanoids are responsible for the progressive destruction of cartilage and bone, however neither steroids, nor the non steroidal anti-inflammatory drugs (NSAIDs), cannot slow down cartilage and bone destruction providing only symptomatic improvement. The current rheumatoid arthritis treatment options include mainly the use of disease-modifying anti-rheumatic drugs, the corticosteroids, the NSAIDs and biological agents...
August 14, 2017: Advances in Medical Sciences
https://www.readbyqxmd.com/read/28818464/one-pot-synthesis-of-bioactive-cyclopentenones-from-%C3%AE-linolenic-acid-and-docosahexaenoic-acid
#8
Daniel Maynard, Sara Mareike Müller, Monika Hahmeier, Jana Löwe, Ivo Feussner, Harald Gröger, Andrea Viehhauser, Karl-Josef Dietz
Oxidation products of the poly-unsaturated fatty acids (PUFAs) arachidonic acid, α-linolenic acid and docosahexaenoic acid are bioactive in plants and animals as shown for the cyclopentenones prostaglandin 15d-PGJ2 and PGA2, cis-(+)-12-oxophytodienoic acid (12-OPDA), and 14-A-4 neuroprostane. In this study an inexpensive and simple enzymatic multi-step one-pot synthesis is presented for 12-OPDA, which is derived from α-linolenic acid, and the analogous docosahexaenoic acid (DHA)-derived cyclopentenone [(4Z,7Z,10Z)-12-[[-(1S,5S)-4-oxo-5-(2Z)-pent-2-en-1yl]-cyclopent-2-en-1yl] dodeca-4,7,10-trienoic acid, OCPD]...
August 1, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28817667/glycoprotein-ib-activation-by-thrombin-stimulates-the-energy-metabolism-in-human-platelets
#9
Norma Corona de la Peña, Manuel Gutiérrez-Aguilar, Ileana Hernández-Reséndiz, Álvaro Marín-Hernández, Sara Rodríguez-Enríquez
Thrombin-induced platelet activation requires substantial amounts of ATP. However, the specific contribution of each ATP-generating pathway i.e., oxidative phosphorylation (OxPhos) versus glycolysis and the biochemical mechanisms involved in the thrombin-induced activation of energy metabolism remain unclear. Here we report an integral analysis on the role of both energy pathways in human platelets activated by several agonists, and the signal transducing mechanisms associated with such activation. We found that thrombin, Trap-6, arachidonic acid, collagen, A23187, epinephrine and ADP significantly increased glycolytic flux (3-38 times vs...
2017: PloS One
https://www.readbyqxmd.com/read/28814238/structural-insights-for-drugs-developed-for-phospholipase-d-enzymes
#10
Kimberly Stieglitz
BACKGROUND: In recent years human phospholipase D enzymes (PLD1 and PLD2 isozymes) have emerged as drug targets for various diseases such as cardiovascular disease, cancer, infectious diseases and neurodegenerative conditions such as Alzheimer's and Parkinson's disease. The interest in PLD as a drug target is due to the fact that PLD enzymes belong to a superfamily of phospholipases that are essential to intracellular and extracellular signaling. Many bioactive lipid signaling molecules are generated by these enzymes including phosphatidic and lysophosphatidic acid, arachidonic acid, and diacylglycerol (DAG)...
August 15, 2017: Current Drug Discovery Technologies
https://www.readbyqxmd.com/read/28813715/induction-of-cyclooxygenase-2-by-streptococcus-pyogenes-is-mediated-by-cytolysins
#11
Ulrike Blaschke, Andreas Beineke, Johanna Klemens, Eva Medina, Oliver Goldmann
Prostaglandin E2 (PGE2), an arachidonic acid metabolite regulating a broad range of physiological activities, is an important modulator of the severity of infection caused by Streptococcus pyogenes. Here, we investigated the role of streptococcal cytolysin S (SLS) and streptococcal cytolysin O (SLO) in the induction of cyclooxygenase-2 (COX-2), the rate-limiting enzyme in the synthesis of prostaglandins, in in vitro cultured macrophages and during in vivo infection. Macrophages were infected with S. pyogenes wild type or with the isogenic mutant strains deficient in SLS (ΔSLS), SLO (ΔSLO), or both (ΔSLS/ΔSLO), and the expression of COX-2 was determined at the transcriptional and the protein level...
August 17, 2017: Journal of Innate Immunity
https://www.readbyqxmd.com/read/28812459/alox15-immunohistochemistry-aids-in-the-diagnosis-of-eosinophilic-esophagitis-on-pauci-eosinophilic-biopsies-in-children
#12
Yiang Hui, Sonja Chen, Kara A Lombardo, Murray B Resnick, Shamlal Mangray, Andres Matoso
Histologically, esophageal biopsies should have ≥15 intraepithelial eosinophils (IEEs) per high power field (HPF) to support a clinicopathologic diagnosis of eosinophilic esophagitis (EoE). Children with clinically apparent EoE may show pauci-eosinophilic biopsies due to patchy involvement. Immunostaining (Immunohistochemistry) for arachidonate-15 lipooxygenase (ALOX15) has been demonstrated to be a sensitive marker for EoE. We retrospectively assessed the expression of ALOX15 in 48 biopsies from 21 patients with established diagnosis of EoE and with tissue fragments below the threshold of 15 IEEs/HPF...
September 2017: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/28812137/myoglobinemia-markers-with-potential-applications-in-forensic-sample-analysis-lipid-markers-in-myoglobinemia-for-postmortem-blood
#13
Hiroko Abe, Daisuke Yajima, Yumi Hoshioka, Akina Nara, Sayaka Nagasawa, Hirotaro Iwase
The crush syndrome, in which rhabdomyolysis and trauma occur as a result of heat stroke and drug intoxication, can lead to myoglobinemia. This condition can be diagnosed by measuring myoglobin (Mb) levels in blood and urine. However, postmortem Mb levels are unreliable indicators, since blood Mb concentration drastically increases within a very short time after death and urine cannot always be obtained at dissection; this makes it difficult to diagnose myoglobinemia in a corpse. To address this issue, in this study, we used a lipidomics approach to identify markers that can be used to detect myoglobinemia in postmortem blood samples...
August 15, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28811090/guanosine-exerts-antiplatelet-and-antithrombotic-properties-through-an-adenosine-related-camp-pka-signaling
#14
Francisco Fuentes, Marcelo Alarcón, Lina Badimon, Manuel Fuentes, Karl-Norbert Klotz, Gemma Vilahur, Sonja Kachler, Teresa Padró, Iván Palomo, Eduardo Fuentes
BACKGROUND: Guanosine is a natural product and an endogenous nucleoside that has shown to increase during myocardial ischemia. Platelets are critically involved in ischemic coronary events. It remains unknown, however, whether guanosine may affect platelet activation and function. We sought to investigate the potential antiplatelet and antithrombotic properties of guanosine and decipher the mechanisms behind. METHODS: We firstly assessed the effects of guanosine on platelet activation/aggregation upon stimulation with several platelet agonists including adenosine diphosphate (ADP), collagen, arachidonic acid (AA), and TRAP-6...
August 7, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28809482/structural-dynamics-of-15-lipoxygenase-2-via-hydrogen-deuterium-exchange
#15
Kristin Diane Droege, Mary E Keithly, Charles R Sanders, Richard N Armstrong, Matthew K Thompson
Eicosanoids are inflammatory signaling lipids that are biosynthesized in response to cellular injury or threat. They were originally thought to be pro-inflammatory molecules, but at least one sub-class, the lipoxins, are able to resolve inflammation. The first step in lipoxin synthesis is the oxygenation of arachidonic acid by 15-Lipoxygenase (15-LOX). 15-LOX contains two domains: a Ca2+ binding PLAT domain and a catalytic domain. 15-LOX is a soluble cytosolic protein until Ca2+ binding to the PLAT domain promotes translocation to the membrane surface...
August 15, 2017: Biochemistry
https://www.readbyqxmd.com/read/28808157/cytosolic-phospholipase-a2%C3%AE-promotes-pulmonary-inflammation-and-systemic-disease-during-streptococcus-pneumoniae-infection
#16
Rudra Bhowmick, Stacie Clark, Joseph V Bonventre, John M Leong, Beth A McCormick
Pulmonary infection by Streptococcus pneumoniae is characterized by a robust alveolar infiltration of neutrophils (polymorphonuclear cells or PMNs) that can promote systemic spread of the infection if not resolved. We previously showed that 12-lipoxygenase (12-LOX), which is required to generate the PMN chemoattractant hepoxilin A3 (HXA3) from arachidonic acid (AA), promotes acute pulmonary inflammation and systemic infection after lung challenge with S. pneumoniae As phospholipase A2 (PLA2) promotes the release of AA, we investigated the role of PLA2 in local and systemic disease during S...
August 14, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28807874/docosahexaenoic-acid-increases-the-expression-of-oxidative-stress-induced-growth-inhibitor-1-through-the-pi3k-akt-nrf2-signaling-pathway-in-breast-cancer-cells
#17
Chia-Han Tsai, You-Cheng Shen, Haw-Wen Chen, Kai-Li Liu, Jer-Wei Chang, Pei-Yin Chen, Chen-Yu Lin, Hsien-Tsung Yao, Chien-Chun Li
Oxidative stress-induced growth inhibitor 1 (OSGIN1), a tumor suppressor, inhibits cell proliferation and induces cell death. N-6 and n-3 PUFAs protect against breast cancer, but the molecular mechanisms of this effect are not clear. We investigated the effect of n-6 and n-3 PUFAs on OSGIN1 expression and whether OSGIN1 is involved in PUFA-induced apoptosis in breast cancer cells. We used 100 μM of n-6 PUFAs including arachidonic acid, linoleic acid, and gamma-linolenic acid and n-3 PUFAs including alpha-linolenic acid, eicosapentaenoic acid, and docosahexaenoic acid (DHA)...
August 11, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28806965/decreased-circulating-dihomo-gamma-linolenic-acid-levels-are-associated-with-total-mortality-in-patients-with-acute-cardiovascular-disease-and-acute-decompensated-heart-failure
#18
Shohei Ouchi, Tetsuro Miyazaki, Kazunori Shimada, Yurina Sugita, Megumi Shimizu, Azusa Murata, Takao Kato, Tatsuro Aikawa, Shoko Suda, Tomoyuki Shiozawa, Masaru Hiki, Shuhei Takahashi, Takatoshi Kasai, Katsumi Miyauchi, Hiroyuki Daida
BACKGROUND: Polyunsaturated fatty acids (PUFAs) have important roles in the pathogenesis of cardiovascular diseases. However, the clinical significance of omega-6 PUFAs in acute cardiovascular disease remains unknown. METHODS: We enrolled 417 consecutive patients with acute cardiovascular disease admitted to the cardiac intensive care unit at Juntendo University Hospital between April 2012 and October 2013. We investigated the association between serum PUFA levels and long-term mortality...
August 14, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28803982/specific-inhibition-of-xenorhabdus-hominickii-an-entomopathogenic-bacterium-against-different-types-of-host-insect-phospholipase-a2
#19
Md Sadekuzzaman, Yonggyun Kim
Phospholipase A2 (PLA2) hydrolyzes ester bond of phospholipids at the sn-2 position to release free fatty acid and lysophospholipids. Some PLA2s preferentially release arachidonic acid which is subsequently oxygenated into eicosanoids to mediate immune responses in insects. Xenorhabdus hominickii is an entomopathogenic bacterium that can suppress insect immunity by inhibiting PLA2 activity. However, little is known about target PLA2 types inhibited by X. hominickii. Therefore, the objective of this study was to determine PLA2 types in the host insect, Spodoptera exigua using specific inhibitors...
August 10, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/28803964/tgf%C3%AE-smad-signalling-modulates-mll-and-mll-af4-mediated-5-lipoxygenase-promoter-activation
#20
Meike J Saul, Florian Groher, Anett B Hegewald, Michaela Müller-McNicoll, Rolf Marschalek, Beatrix Suess, Dieter Steinhilber
5-Lipoxygenase (5-LO) catalyzes the initial two steps of the conversion of arachidonic acid to leukotrienes which represent a group of pro-inflammatory lipid mediators involved in immune defense reactions as well as inflammation, allergy and cancer. Transforming growth factor-β (TGFβ) and calcitriol strongly upregulate 5-LO expression during myeloid cell differentiation and MLL-AF4 has been shown to strongly activate the 5-LO promoter. Here, we investigated the role of TGFβ/SMAD signalling in 5-LO promoter activation...
August 10, 2017: Prostaglandins & Other Lipid Mediators
keyword
keyword
70191
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"