keyword
MENU ▼
Read by QxMD icon Read
search

Relaxin

keyword
https://www.readbyqxmd.com/read/28339772/heterologous-desensitization-of-cardiac-%C3%AE-adrenergic-signal-via-hormone-induced-%C3%AE-ar-arrestin-pde4-complexes
#1
Qian Shi, Minghui Li, Delphine Mika, Qin Fu, Sungjin Kim, Jason Phan, Ao Shen, Gregoire Vandecasteele, Yang K Xiang
Aims: Cardiac β-adrenergic receptor (βAR) signaling is susceptible to heterologous desensitization by different neurohormonal stimuli in clinical conditions associated with heart failure. We aim to examine the underlying mechanism of cross talk between βARs and a set of G-protein coupled receptors (GPCRs) activated by hormones/agonists. Methods and results: Rat ventricular cardiomyocytes were used to determine heterologous phosphorylation of βARs under a series of GPCR agonists...
February 21, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28315430/oncolytic-adenovirus-expressing-relaxin-ydc002-enhances-therapeutic-efficacy-of-gemcitabine-against-pancreatic-cancer
#2
Kyung Hee Jung, Il-Kyu Choi, Hee-Seung Lee, Hong Hua Yan, Mi Kwon Son, Hyo Min Ahn, JinWoo Hong, Chae-Ok Yun, Soon-Sun Hong
Pancreatic cancer is a highly lethal disease for which limited therapeutic options are available. Pancreatic cancer exhibits a pronounced collagen-rich stromal reaction, which induces chemoresistance by inhibiting drug diffusion into the tumor. Complementary treatment with oncolytic virus such as an oncolytic adenovirus expressing relaxin (YDC002) is an innovative treatment option for combating chemoresistant pancreatic cancer. Here, we examined the ability of combined treatment with gemcitabine and YDC002, which degrades extracellular matrix (ECM), to efficiently treat chemoresistant and desmoplastic pancreatic cancer...
March 14, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28314951/relaxin-3-rxfp3-signalling-in-mouse-hypothalamus-no-effect-of-rxfp3-activation-on-corticosterone-despite-reduced-presynaptic-excitatory-input-onto-paraventricular-crh-neurons-in-vitro
#3
C Zhang, D V Baimoukhametova, C M Smith, J S Bains, Andrew L Gundlach
Relaxin-3/RXFP3 signalling is proposed to be involved in the neuromodulatory control of arousal- and stress-related neural circuits. Furthermore, previous studies in rats have led to the proposal that relaxin-3/RXFP3 signalling is associated with activation of the hypothalamic-pituitary-adrenal axis, but direct evidence for RXFP3-related actions on the activity of hypothalamic corticotropin-releasing hormone (CRH) neurons is lacking. In this study, we investigated characteristics of the relaxin-3/RXFP3 system in mouse hypothalamus...
March 17, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28301678/effectiveness-of-adjunctive-interventions-for-accelerating-orthodontic-tooth-movement-a-systematic-review-of-systematic-reviews
#4
REVIEW
Jianru Yi, Jiani Xiao, Hanshi Li, Yu Li, Xiaobing Li, Zhihe Zhao
This study was aimed to summarize published systematic reviews that assess the effects of adjunctive interventions on the acceleration of orthodontic tooth movement (OTM). Electronic and manual searches were performed up to Aug 2016. Systematic reviews investigating the impact of adjunctive techniques on the promotion of OTM were included. The methodological quality of the included reviews was evaluated using the AMSTAR scale. The quality of evidence for each intervention was assessed using GRADE. The Jadad decision algorithm was used to select a study to provide body evidence from discordant reviews on the same intervention...
March 16, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28295347/the-relaxin-3-rxfp3-system-as-a-peptidergic-pathway-to-control-hypothalamic-neurons
#5
Marc Landry
Nearly every neuron in the brain secretes a bioactive peptide along with a conventional neurotransmitter such as GABA or Glutamate. Peptides seem to have preceded the 'classical' transmitters as the nervous system developed. This article is protected by copyright. All rights reserved.
March 10, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28274616/interaction-mechanism-of-insulin-like-peptide-5-with-relaxin-family-peptide-receptor-4
#6
Meng-Jun Hu, Dian Wei, Xiao-Xia Shao, Jia-Hui Wang, Ya-Li Liu, Zeng-Guang Xu, Zhan-Yun Guo
Insulin-like peptide 5 (INSL5) is a gut peptide hormone belonging to the insulin/relaxin superfamily. It is implicated in the regulation of food intake and glucose homeostasis by activating relaxin family peptide receptor 4 (RXFP4). Previous studies have suggested that the B-chain is important for INSL5 activity against RXFP4. However, functionalities of the B-chain residues have not yet been systematically studied. In the present work, we conducted alanine-scanning mutagenesis of the B-chain residues of human INSL5 to obtain an overview of their contributions...
April 1, 2017: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28245473/anti-fibrosis-effect-of-relaxin-and-spironolactone-combined-on-isoprenaline-induced-myocardial-fibrosis-in-rats-via-inhibition-of-endothelial-mesenchymal-transition
#7
Jiejie Cai, Xiao Chen, Xingxing Chen, Lingzhi Chen, Gaoshu Zheng, Xi Zhou, Hao Zhou
BACKGROUND: The effect of relaxin and spironolactone combined on myocardial fibrosis has not been reported. Thus, we investigated the effect of the combined therapy on isoprenaline-induced myocardial fibrosis and the mechanism. METHODS: Rats were injected subcutaneously with isoprenaline to induce myocardial fibrosis and underwent subcutaneous injection with relaxin (2 µg·kg-1·d-1) and given a gavage of spironolactone (30 mg·kg-1·d-1) alone or combined for 14 days...
March 1, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28245243/serelaxin-as-a-potential-treatment-for-renal-dysfunction-in-cirrhosis-preclinical-evaluation-and-results-of-a-randomized-phase-2-trial
#8
Victoria K Snowdon, Neil J Lachlan, Anna M Hoy, Patrick W F Hadoke, Scott I Semple, Dilip Patel, Will Mungall, Timothy J Kendall, Adrian Thomson, Ross J Lennen, Maurits A Jansen, Carmel M Moran, Antonella Pellicoro, Prakash Ramachandran, Isaac Shaw, Rebecca L Aucott, Thomas Severin, Rajnish Saini, Judy Pak, Denise Yates, Neelesh Dongre, Jeremy S Duffield, David J Webb, John P Iredale, Peter C Hayes, Jonathan A Fallowfield
BACKGROUND: Chronic liver scarring from any cause leads to cirrhosis, portal hypertension, and a progressive decline in renal blood flow and renal function. Extreme renal vasoconstriction characterizes hepatorenal syndrome, a functional and potentially reversible form of acute kidney injury in patients with advanced cirrhosis, but current therapy with systemic vasoconstrictors is ineffective in a substantial proportion of patients and is limited by ischemic adverse events. Serelaxin (recombinant human relaxin-2) is a peptide molecule with anti-fibrotic and vasoprotective properties that binds to relaxin family peptide receptor-1 (RXFP1) and has been shown to increase renal perfusion in healthy human volunteers...
February 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28244195/are-circulating-relaxin-levels-related-to-pulmonary-hypertension-in-patients-with-heart-failure
#9
Johanna E Emmens, Jozine M Ter Maaten, Adriaan A Voors
No abstract text is available yet for this article.
February 28, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28161795/a-novel-bret-based-binding-assay-for-interaction-studies-of-relaxin-family-peptide-receptor-3-with-its-ligands
#10
Jia-Hui Wang, Xiao-Xia Shao, Meng-Jun Hu, Dian Wei, Ya-Li Liu, Zeng-Guang Xu, Zhan-Yun Guo
Relaxin family peptide receptor 3 (RXFP3) is an A-class G protein-coupled receptor that is implicated in the regulation of food intake and stress response upon activation by its cognate agonist relaxin-3. To study its interaction with various ligands, we developed a novel bioluminescence resonance energy transfer (BRET)-based binding assay using the brightest NanoLuc as an energy donor and a newly developed cyan-excitable orange fluorescent protein (CyOFP) as an energy acceptor. An engineered CyOFP without intrinsic cysteine residues but with an introduced cysteine at the C-terminus was overexpressed in Escherichia coli and chemically conjugated to the A-chain N-terminus of an easily labeled chimeric R3/I5 peptide via an intermolecular disulfide linkage...
February 4, 2017: Amino Acids
https://www.readbyqxmd.com/read/28122716/relaxin-confers-cytotrophoblast-protection-from-hypoxiareoxygenation-injury-through-the-phosphatidylinositol-3-kinase-akt-protein-kinase-b-cell-survival-pathway
#11
Oluseyi Ogunleye, Bertha Campo, Diana Herrera, Emiel D Post Uiterweer, Kirk P Conrad
Preeclampsia affects 3-5% of pregnancies, contributes to 10-15% of maternal mortality, and is a leading cause of prematurity and increased long-term morbidity in those affected. Contemporary understanding of preeclampsia's maternal-fetal interface suggests a major role for placental oxidative stress resulting from ischemia-reperfusion injury. We hypothesized the pregnancy hormone relaxin would reduce cytotrophoblast apoptosis, necrosis (aponecrosis) and export of placental debris into maternal circulation. If so, relaxin might be employed as a therapeutic intervention to diminish activation of the maternal systemic inflammatory response central to clinical disease development...
January 25, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28120574/relaxin-modulates-the-expression-of-mmps-and-timps-in-fibroblasts-of-patients-with-carpal-tunnel-syndrome
#12
Young Mi Kang, Hwan Mo Lee, Seong Hwan Moon, Ho Kang, Yun Rak Choi
PURPOSE: The aim of this study was to investigate the anti-fibrotic effect of relaxin in subsynovial fibroblasts activated by transforming growth factor beta (TGF-β). MATERIALS AND METHODS: To test the anti-fibrotic effect of an adenovirus-relaxin construct (Ad-RLN) on subsynovial fibroblasts in vitro, cells from subsynovial connective tissue of patients with carpal tunnel syndrome were activated with TGF-β1 and exposed to Ad-RLN (as a therapeutic gene) or adenovirus-lacZ construct (as a marker gene) for four hours...
March 2017: Yonsei Medical Journal
https://www.readbyqxmd.com/read/28108636/serelaxin-treatment-promotes-adaptive-hypertrophy-but-does-not-prevent-heart-failure-in-experimental-peripartum-cardiomyopathy
#13
Justus Nonhoff, Melanie Ricke-Hoch, Mirco Mueller, Britta Stapel, Tobias Pfeffer, Martina Kasten, Michaela Scherr, Constantin von Kaisenberg, Johann Bauersachs, Arash Haghikia, Denise Hilfiker-Kleiner
AIMS: Peripartum cardiomyopathy (PPCM) is a systolic left ventricular dysfunction developing in the peripartum phase in previously healthy women. Relaxin-2 is a pregnancy hormone with potential beneficial effects in heart failure patients. We evaluated Relaxin-2 as a potential diagnostic marker and/or a therapeutic agent in PPCM. METHODS AND RESULTS: In healthy peripartum women, serum Relaxin-2 levels (measured by ELISA in the second half of pregnancy) were elevated showing a decreasing trend in the first postpartum week and returned to non-pregnant levels thereafter...
January 20, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28100033/relaxin-3-inputs-target-hippocampal-interneurons-and-deletion-of-hilar-relaxin-3-receptors-in-floxed-rxfp3-mice-impairs-spatial-memory
#14
M Haidar, G Guèvremont, C Zhang, Rad Bathgate, E Timofeeva, C M Smith, A L Gundlach
Hippocampus is innervated by γ-aminobutyric acid (GABA) 'projection' neurons of the nucleus incertus (NI), including a population expressing the neuropeptide, relaxin-3 (RLN3). In studies aimed at gaining an understanding of the role of RLN3 signaling in hippocampus via its Gi/o -protein-coupled receptor, RXFP3, we examined the distribution of RLN3-immunoreactive nerve fibres and RXFP3 mRNA-positive neurons in relation to hippocampal GABA neuron populations. RLN3-positive elements were detected in close-apposition with a substantial population of somatostatin (SST)- and GABA-immunoreactive neurons, and a smaller population of parvalbumin- and calretinin-immunoreactive neurons in different hippocampal areas, consistent with the relative distribution patterns of RXFP3 mRNA and these marker transcripts...
January 18, 2017: Hippocampus
https://www.readbyqxmd.com/read/28098344/inhibition-of-oxytocin-and-vasopressin-neuron-activity-in-rat-hypothalamic-paraventricular-nucleus-by-relaxin-3-rxfp3-signalling
#15
Alan Kania, Anna Gugula, Agnieszka Grabowiecka, Camila de Ávila, Tomasz Blasiak, Zenon Rajfur, Marian H Lewandowski, Grzegorz Hess, Elena Timofeeva, Andrew L Gundlach, Anna Blasiak
KEY POINTS: Relaxin-3 is a stress-responsive neuropeptide that acts at its cognate receptor, RXFP3, to alter behaviours including feeding. In this study, we have demonstrated a direct, RXFP3-dependent, inhibitory action of relaxin-3 on oxytocin and vasopressin paraventricular nucleus (PVN) neuron electrical activity, a putative cellular mechanism of orexigenic actions of relaxin-3. We observed a Gαi/o -protein-dependent inhibitory influence of selective RXFP3 activation on PVN neuronal activity in vitro and demonstrated a direct action of RXFP3 activation on oxytocin and vasopressin PVN neurons, confirmed by their abundant expression of RXFP3 mRNA...
January 18, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28088197/production-of-human-pro-relaxin-h2-in-the-yeast-pichia-pastoris
#16
D Cimini, K Della Corte, R Finamore, L Andreozzi, A Stellavato, A V A Pirozzi, F Ferrara, R Formisano, M De Rosa, M Chino, L Lista, A Lombardi, V Pavone, C Schiraldi
BACKGROUND: Initially known as the reproductive hormone, relaxin was shown to possess other therapeutically useful properties that include extracellular matrix remodeling, anti-inflammatory, anti-ischemic and angiogenic effects. All these findings make relaxin a potential drug for diverse medical applications. Its precursor, pro-relaxin, is an 18 kDa protein, that shows activity in in vitro assays. Since extraction of relaxin from animal tissues raises several issues, prokaryotes and eukaryotes were both used as expression systems for recombinant relaxin production...
January 14, 2017: BMC Biotechnology
https://www.readbyqxmd.com/read/28081371/gwas-identifies-new-loci-for-painful-temporomandibular-disorder
#17
A E Sanders, D Jain, T Sofer, K F Kerr, C C Laurie, J R Shaffer, M L Marazita, L M Kaste, G D Slade, R B Fillingim, R Ohrbach, W Maixner, T Kocher, O Bernhardt, A Teumer, C Schwahn, K Sipilä, R Lähdesmäki, M Männikkö, P Pesonen, M Järvelin, C M Rizzatti-Barbosa, C B Meloto, M Ribeiro-Dasilva, L Diatchenko, P Serrano, S B Smith
Temporomandibular disorder (TMD) is a musculoskeletal condition characterized by pain and reduced function in the temporomandibular joint and/or associated masticatory musculature. Prevalence in the United States is 5% and twice as high among women as men. We conducted a discovery genome-wide association study (GWAS) of TMD in 10,153 participants (769 cases, 9,384 controls) of the US Hispanic Community Health Study/Study of Latinos (HCHS/SOL). The most promising single-nucleotide polymorphisms (SNPs) were tested in meta-analysis of 4 independent cohorts...
March 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28076930/hormone-receptor-expression-in-human-fascial-tissue
#18
C Fede, G Albertin, L Petrelli, M M Sfriso, C Biz, R De Caro, C Stecco
Many epidemiologic, clinical, and experimental findings point to sex differences in myofascial pain in view of the fact that adult women tend to have more myofascial problems with respect to men. It is possible that one of the stimuli to sensitization of fascial nociceptors could come from hormonal factors such as estrogen and relaxin, that are involved in extracellular matrix and collagen remodeling and thus contribute to functions of myofascial tissue. Immunohistochemical and molecular investigations (real-time PCR analysis) of relaxin receptor 1 (RXFP1) and estrogen receptor-alpha (ERα) localization were carried out on sample of human fascia collected from 8 volunteers patients during orthopedic surgery (all females, between 42 and 70 yrs, divided into pre- and post-menopausal groups), and in fibroblasts isolated from deep fascia, to examine both protein and RNA expression levels...
November 2, 2016: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/28073832/reperfusion-therapy-with-recombinant-human-relaxin-2-serelaxin-attenuates-myocardial-infarct-size-and-nlrp3-inflammasome-following-ischemia-reperfusion-injury-via-enos-dependent-mechanism
#19
Juan Valle Raleigh, Adolfo G Mauro, Teja Devarakonda, Carlo Marchetti, Jun He, Erica Kim, Scott Filippone, Anindita Das, Stefano Toldo, Antonio Abbate, Fadi N Salloum
AIMS: The preconditioning-like infarct-sparing and anti-inflammatory effects of the peptide hormone relaxin following ischemic injury have been studied in the heart. Whether reperfusion therapy with recombinant human relaxin-2, serelaxin, reduces myocardial infarct size and attenuates the subsequent NLRP3 inflammasome activation leading to further loss of functional myocardium following ischemia/reperfusion (I/R) injury is unknown. METHODS AND RESULTS: After baseline echocardiography, adult male wild-type C57BL or eNOS knockout mice underwent myocardial infarction (MI) by coronary artery ligation for 30 min followed by 24 h reperfusion...
January 10, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28026087/oral-contraceptive-therapy-reduces-serum-relaxin-2-in-elite-female-athletes
#20
Sayaka Nose-Ogura, Osamu Yoshino, Kaori Yamada-Nomoto, Mariko Nakamura, Miyuki Harada, Michiko Dohi, Toru Okuwaki, Yutaka Osuga, Takashi Kawahara, Shigeru Saito
AIM: Recent investigations have demonstrated that athletes with high relaxin-2 levels have a high risk of anterior cruciate ligament injuries, while athletes taking oral contraceptives (OC) have low relaxin-2 levels. It has not yet been clarified whether taking OC reduces relaxin-2 levels. The purpose of this study was to investigate changes in relaxin-2 levels in athletes taking OC. METHODS: Levels of relaxin-2, estradiol, progesterone, luteinizing hormone and follicle-stimulating hormone were measured in serum samples (n = 183) from 106 elite female athletes...
December 27, 2016: Journal of Obstetrics and Gynaecology Research
keyword
keyword
46441
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"