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Adenosine receptor

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https://www.readbyqxmd.com/read/28633050/the-adenosine-mediated-neuronal-glial-homeostatic-sleep-response
#1
REVIEW
Robert W Greene, Theresa E Bjorness, Ayako Suzuki
Slow wave activity (SWA) during slow wave sleep (SWS) is the best indicator of the sleep homeostasis. The intensity of the SWA observed during SWS that follows prolonged waking is directly correlated with the duration of prior waking and its intensity decays during SWS suggesting a buildup and a resolution of sleep need. This sleep-homeostasis related SWA results from a buildup and decay of extracellular adenosine that acts at neuronal adenosine A1 receptors to facilitate SWA and is metabolized by adenosine kinase found in glia...
June 17, 2017: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/28630344/retraction-for-zimmerman-et-al-signaling-through-hepatocellular-a2b-adenosine-receptors-dampens-ischemia-and-reperfusion-injury-of-the-liver
#2
(no author information available yet)
No abstract text is available yet for this article.
June 19, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28630110/retraction-adora2b-adenosine-receptor-signaling-protects-during-acute-kidney-injury-via-inhibition-of-neutrophil-dependent-tnf-%C3%AE-release
#3
(no author information available yet)
No abstract text is available yet for this article.
July 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28629145/synthesis-and-evaluation-of-phenylxanthine-derivatives-as-potential-dual-a2ar-antagonists-mao-b-inhibitors-for-parkinson-s-disease
#4
Xuebao Wang, Chao Han, Yong Xu, Kaiqi Wu, Shuangya Chen, Mangsha Hu, Luyao Wang, Yun Ye, Faqing Ye
The aim of this research was to prove the speculation that phenylxanthine (PX) derivatives possess adenosine A2A receptor (A2AR)-blocking properties and to screening and evaluate these PX derivatives as dual A2AR antagonists/MAO-B inhibitors for Parkinson's disease. To explore this hypothesis, two series of PX derivatives were prepared and their antagonism against A2AR and inhibition against MAO-B were determined in vitro. In order to evaluate further the antiparkinsonian properties, pharmacokinetic and haloperidol-induced catalepsy experiments were carried out in vivo...
June 17, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28628804/neuronal-substrates-of-sleep-homeostasis-lessons-from-flies-rats-and-mice
#5
REVIEW
Jeffrey M Donlea, Md Noor Alam, Ronald Szymusiak
Sleep homeostasis is a fundamental property of vigilance state regulation that is highly conserved across species. Neuronal systems and circuits that underlie sleep homeostasis are not well understood. In Drosophila, a neuronal circuit involving neurons in the ellipsoid body and in the dorsal Fan-shaped body is a candidate for both tracing sleep need during waking and translating it to increased sleep drive and expression. Sleep homeostasis in rats and mice involves multiple neuromodulators acting on multiple wake- and sleep-promoting neuronal systems...
June 16, 2017: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/28626774/adenosine-triphosphate-promotes-allergen-induced-airway-inflammation-and-th17-cell-polarization-in-neutrophilic-asthma
#6
Fang Zhang, Xin Su, Gang Huang, Xiao-Feng Xin, E-Hong Cao, Yi Shi, Yong Song
Adenosine triphosphate (ATP) is a key mediator to alert the immune dysfunction by acting on P2 receptors. Here, we found that allergen challenge caused an increase of ATP secretion in a murine model of neutrophilic asthma, which correlated well with neutrophil counts and interleukin-17 production. When ATP signaling was blocked by intratracheal administration of the ATP receptor antagonist suramin before challenge, neutrophilic airway inflammation, airway hyperresponsiveness, and Th17-type responses were reduced significantly...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28626529/photoaffinity-labeling-of-the-human-a2a-adenosine-receptor-and-cross-link-position-analysis-by-mass-spectrometry
#7
Hideyuki Muranaka, Takaki Momose, Chiaki Handa, Tomonaga Ozawa
Photoaffinity labeling (PAL) is widely used for the identification of ligand-binding proteins and elucidation of ligand-binding sites. PAL has also been employed for the characterization of G protein-coupled receptors (GPCRs); however, a limited number of reports has successfully identified their cross-linked amino acids. This report is the first of its kind to determine the cross-link position of the human A2A adenosine receptor by PAL with the novel diazirine-based photoaffinity probe 9.
June 8, 2017: ACS Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28626446/gnrh-induces-erk-dependent-bleb-formation-in-gonadotrope-cells-involving-recruitment-of-members-of-a-gnrh-receptor-associated-signalosome-to-the-blebs
#8
Liat Rahamim-Ben Navi, Anna Tsukerman, Alona Feldman, Philippa Melamed, Melanija Tomić, Stanko S Stojilkovic, Ulrich Boehm, Rony Seger, Zvi Naor
We have previously described a signaling complex (signalosome) associated with the GnRH receptor (GnRHR). We now report that GnRH induces bleb formation in the gonadotrope-derived LβT2 cells. The blebs appear within ~2 min at a turnover rate of ~2-3 blebs/min and last for at least 90 min. Formation of the blebs requires active ERK1/2 and RhoA-ROCK but not active c-Src. Although the following ligands stimulate ERK1/2 in LβT2 cells: EGF > GnRH > PMA > cyclic adenosine monophosphate (cAMP), they produced little or no effect on bleb formation as compared to the robust effect of GnRH (GnRH > PMA > cAMP > EGF), indicating that ERK1/2 is required but not sufficient for bleb formation possibly due to compartmentalization...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28625343/short-term-cooling-increases-serum-triglycerides-and-small-high-density-lipoprotein-levels-in-humans
#9
Geerte Hoeke, Kimberly J Nahon, Leontine E H Bakker, Sabine S C Norkauer, Donna L M Dinnes, Maaike Kockx, Laeticia Lichtenstein, Diana Drettwan, Anne Reifel-Miller, Tamer Coskun, Philipp Pagel, Fred P H T M Romijn, Christa M Cobbaert, Ingrid M Jazet, Laurent O Martinez, Leonard Kritharides, Jimmy F P Berbée, Mariëtte R Boon, Patrick C N Rensen
BACKGROUND: Cold exposure and β3-adrenergic receptor agonism, which both activate brown adipose tissue, markedly influence lipoprotein metabolism by enhancing lipoprotein lipase-mediated catabolism of triglyceride-rich lipoproteins and increasing plasma high-density lipoprotein (HDL) levels and functionality in mice. However, the effect of short-term cooling on human lipid and lipoprotein metabolism remained largely elusive. OBJECTIVE: The objective was to assess the effect of short-term cooling on the serum lipoprotein profile and HDL functionality in men...
May 3, 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28624483/biomarker-profiles-of-acute%C3%A2-heart%C3%A2-failure%C3%A2-patients-with-a%C3%A2-mid-range-ejection%C3%A2-fraction
#10
Jasper Tromp, Mohsin A F Khan, Robert J Mentz, Christopher M O'Connor, Marco Metra, Howard C Dittrich, Piotr Ponikowski, John R Teerlink, Gad Cotter, Beth Davison, John G F Cleland, Michael M Givertz, Daniel M Bloomfield, Dirk J van Veldhuisen, Hans L Hillege, Adriaan A Voors, Peter van der Meer
OBJECTIVES: In this study, the authors used biomarker profiles to characterize differences between patients with acute heart failure with a midrange ejection fraction (HFmrEF) and compare them with patients with a reduced (heart failure with a reduced ejection fraction [HFrEF]) and preserved (heart failure with a preserved ejection fraction [HFpEF]) ejection fraction. BACKGROUND: Limited data are available on biomarker profiles in acute HFmrEF. METHODS: A panel of 37 biomarkers from different pathophysiological domains (e...
May 31, 2017: JACC. Heart Failure
https://www.readbyqxmd.com/read/28623750/lcz696-improves-cardiac-function-via-alleviating-drp1-mediated-mitochondrial-dysfunction-in-mice-with-doxorubicin-induced-dilated-cardiomyopathy
#11
Yan Xia, Zhangwei Chen, Ao Chen, Mingqiang Fu, Zhen Dong, Kai Hu, Xiangdong Yang, Yunzeng Zou, Aijun Sun, Juying Qian, Junbo Ge
AIMS: LCZ696, a novel angiotensin receptor neprilysin inhibitor, is effective in treating heart failure patients. Doxorubicin (DOX) is an effective antitumor medication but the cardiotoxicity limited its clinical use. In this study, we aimed to determine the effect of LCZ696 on DOX-induced cardiomyopathy in mice and in vitro and to explore related mechanisms focusing on fission protein dynamin-related protein 1 (Drp1). METHODS AND RESULTS: In human study, we found that myocardial fission protein Drp1 expression and its ser 616 phosphorylation were significantly increased in dilated cardiomyopathy (DCM) patients...
June 14, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28623127/the-inhibition-of-nlrp3-signaling-attenuates-liver-injury-in-an-%C3%AE-galactosylceramide-induced-hepatitis-model
#12
Ayumu Kanbe, Hiroyasu Ito, Yukari Omori, Akira Hara, Mitsuru Seishima
Inflammasomes are involved in innate immune responses. Several NOD-Like receptors (NLRs) participate in the formation of inflammasomes. NACHT, LRR and PYD domains-containing protein 3 (NALP3) belongs to the NLR family and recognizes adenosine triphosphate (ATP), crystals, and Reactive Oxygen Species (ROS). This study examined the effect of inflammasomes on alpha-galactosylceramide (GalCer)-induced liver injury using NALP3-knockout (KO) mice. GalCer administration induced inflammasome activation and IL-1β-maturation...
June 13, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28620198/hydrogen-gas-protects-ip3rs-by-reducing-disulfide-bridges-in-human-keratinocytes-under-oxidative-stress
#13
Ching-Ying Wu, Wen-Li Hsu, Ming-Hsien Tsai, Jui-Lin Liang, Jian-He Lu, Chia-Jung Yen, Hsin-Su Yu, Mami Noda, Chi-Yu Lu, Chu-Huang Chen, Shian-Jang Yan, Tohru Yoshioka
Based on the oxidative stress theory, aging derives from the accumulation of oxidized proteins induced by reactive oxygen species (ROS) in the cytoplasm. Hydrogen peroxide (H2O2) elicits ROS that induces skin aging through oxidation of proteins, forming disulfide bridges with cysteine or methionine sulfhydryl groups. Decreased Ca(2+) signaling is observed in aged cells, probably secondary to the formation of disulfide bonds among Ca(2+) signaling-related proteins. Skin aging processes are modeled by treating keratinocytes with H2O2...
June 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28619991/evidence-that-differentiation-inducing-factor-1-controls-chemotaxis-and-cell-differentiation-at-least-in-part-via-mitochondria-in-d-discoideum
#14
Yuzuru Kubohara, Haruhisa Kikuchi, Van Hai Nguyen, Hidekazu Kuwayama, Yoshiteru Oshima
Differentiation-inducing factor-1 [1-(3,5-dichloro-2,6-dihydroxy-4-methoxyphenyl)hexan-1-one (DIF-1)] is an important regulator of cell differentiation and chemotaxis in the development of the cellular slime mold Dictyostelium discoideum However, the entire signaling pathways downstream of DIF-1 remain to be elucidated. To characterize DIF-1 and its potential receptor(s), we synthesized two fluorescent derivatives of DIF-1, boron-dipyrromethene (BODIPY)-conjugated DIF-1 (DIF-1-BODIPY) and nitrobenzoxadiazole (NBD)-conjugated DIF-1 (DIF-1-NBD), and investigated their biological activities and cellular localization...
June 15, 2017: Biology Open
https://www.readbyqxmd.com/read/28619366/bpi-3016-a-novel-long-acting-hglp-1-analogue-for-the-treatment-of-type-2-diabetes-mellitus
#15
Lieming Ding, Sisi Lu, Yanping Wang, Haibo Chen, Wei Long, Cunbo Ma, Erlong He, Dan Yan, Fenlai Tan
Glucagon-like peptide-1 (GLP-1) analogues have been commonly used as add-on medications for patients with Type 2 diabetes mellitus (T2DM). Currently, the development of long-acting GLP-1 analogues which allow the freedom and flexibility of once-weekly injections while maintaining their potency for a relatively long period has become the mainstream. Here, we successfully developed a long-acting human GLP-1(7-37) analogue (BPI-3016) with significantly extended half-life and increased resistance to dipeptidyl peptidase IV (DPP-IV) cleavage by structural modifications of human GLP-1...
June 13, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28617999/adenosine-an-endogenous-mediator-in-the-pathogenesis-of-gynecological-cancer
#16
REVIEW
Amirhossein Bahreyni, Seyed Sattar Samani, Elnaz Ghorbani, Farzad Rahmani, Reza Khayami, Younes Toroghian, Reihane Behnam-Rassouli, Majid Khazaei, Mikhail Ryzhikov, Mohammad Reza Parizadeh, Malihe Hasanzadeh, Amir Avan, Seyed Mahdi Hassanian
Extracellular concentration of adenosine increases in the hypoxic tumor microenvironment. Adenosine signaling regulates apoptosis, angiogenesis, metastasis and immune suppression in cancer cells. Adenosine-induced cell responses depend upon different subtypes of adenosine receptors activation and type of cancer. Suppression of adenosine signaling via inhibition of adenosine receptors or adenosine generating enzymes including CD39 and CD73 on ovarian or cervical cancer cells is a potentially novel therapeutic approach for gynecological cancer patients...
June 15, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28612530/-minocycline-prevent-microglial-activation-via-suppression-of-adenosine-a-2a-receptor-in-a-rat-stroke-ischemia-reperfusion-model
#17
Tao Tao, Jie Fu, Yong-Gang Liu, Zuo-Xiao Li, Xiao-Gang Li
OBJECTIVES: To investigate whether minocycline could inhibit neuroinflammation induced by microglia activation through suppression of adenosine A2Areceptor (A2AR)expression in rats after cerebral ischemia/reperfusion (I/R) injury. METHODS: Thirty male Sprageue-Dawley rats were randomly divided into 3 groups: sham group, I/R group and minocycline group. The rats were subjected to occlusion of the right middle cerebral artery (MCAO) for 2 h to establish stroke I/R model, and 3 mg/kg minocycline was injected intravenously immediately after reperfusion twice a day in minocycline group...
March 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28611585/role-of-n-arachidonoyl-serotonin-aa-5-ht-in-sleep-wake-cycle-architecture-sleep-homeostasis-and-neurotransmitters-regulation
#18
Eric Murillo-Rodríguez, Vincenzo Di Marzo, Sergio Machado, Nuno B Rocha, André B Veras, Geraldo A M Neto, Henning Budde, Oscar Arias-Carrión, Gloria Arankowsky-Sandoval
The endocannabinoid system comprises several molecular entities such as endogenous ligands [anandamide (AEA) and 2-arachidonoylglycerol (2-AG)], receptors (CB1 and CB2), enzymes such as [fatty acid amide hydrolase (FAHH) and monoacylglycerol lipase (MAGL)], as well as the anandamide membrane transporter. Although the role of this complex neurobiological system in the sleep-wake cycle modulation has been studied, the contribution of the blocker of FAAH/transient receptor potential cation channel subfamily V member 1 (TRPV1), N-arachidonoyl-serotonin (AA-5-HT) in sleep has not been investigated...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28611421/presence-of-caffeine-reversibly-interferes-with-efficacy-of-acupuncture-induced-analgesia
#19
Takumi Fujita, Changyong Feng, Takahiro Takano
Acupuncture is an alternative treatment for wide spectrum chronic pain. However, its validity remains controversial due to the disputed efficacy assessed in various clinical studies. Moreover, variability amongst individuals complicates the predictability of outcome, which impedes the integration of acupuncture into mainstream pain management programs. In light of our previous finding that the analgesic effect of acupuncture is mediated by adenosine A1 receptor activation at the acupuncture point, we here report that in acute and chronic animal pain models, oral intake of caffeine, a potent adenosine receptor antagonist, interferes with acupuncture analgesia, even at a low dose...
June 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28606618/hypoxic-postconditioning-attenuates-apoptosis-via-activation-of-adenosine-a2a-receptors-on-dermal-microvascular-endothelial-cells-of-human-flaps
#20
Jiankun Cao, Wenzhi Li, Chao Cui, Binbin Li, Yi Xin, Lun Cai, Zhizhong Gong, Huang Lin
BACKGROUND: In recent years, many studies have demonstrated that endogenous adenosine induced by ischemia postconditioning reduces apoptosis in various models, but no study has clearly elucidated the effects of hypoxic postconditioning (HPC) in human dermal microvascular endothelial cells (HDMECs) of flaps, and the subtype of adenosine receptors involved remains unknown. In our study, we sought to identify the role of adenosine A2a receptor in the antiapoptotic effects of HPC. MATERIALS AND METHODS: The HDMECs were isolated from human upper eyelid tissue...
May 10, 2017: Journal of Surgical Research
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