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Prolactin receptor

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https://www.readbyqxmd.com/read/28733350/adiponectin-limits-differentiation-and-trophoblast-invasion-in-human-endometrial-cells
#1
Fabien Duval, Esther Dos Santos, Hadia Moindjie, Valérie Serazin, Nelly Swierkowski-Blanchard, François Vialard, Marie-Noëlle Dieudonné
Successful human embryo implantation requires a proper differentiation of endometrial stromal cells (ESCs) into decidual cells, during a process called decidualization. ESCs express specific molecules, as prolactin, insulin-like growth factor-binding protein-1 (IGFBP-1), and connexin-43. Decidual cells are also involved in the control of trophoblast invasion, by secreting various factors, as matrix metalloproteinases (MMPs) and tissue inhibitors of metalloproteinases (TIMPs). Adiponectin is an adipokine with insulin-sensitizing, anti-inflammatory, and anti-proliferative effects...
July 21, 2017: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/28726182/autoimmune-hypothyroidism-is-three-times-more-frequent-in-female-prolactinoma-patients-compared-to-healthy-women-data-from-a-cross-sectional-case-control-study
#2
Atanaska Elenkova, Iliana Аtanasova, Georgi Кirilov, Еmil Natchev, Ralitza Ivanova, Roussanka Кovatcheva, Silvia Vandeva, Dimitar Tcharaktchiev, Sabina Zacharieva
BACKGROUND: The potent immunomodulatory action of prolactin has been demonstrated in many experimental in vitro studies. In accordance with these data, our retrospective analyses revealed higher prevalence of autoimmune thyroid diseases in prolactinoma patients compared to general population. PURPOSE: A cross-sectional case-control study was carried out in a single tertiary referral centre. The main aim was to assess the frequency of newly diagnosed autoimmune thyroid diseases in female patients with prolactinomas...
July 19, 2017: Endocrine
https://www.readbyqxmd.com/read/28710248/microrna-9-regulates-fetal-alcohol-induced-changes-in-d2-receptor-to-promote-prolactin-production
#3
Omkaram Gangisetty, Shaima Jabbar, Olivia Wynne, Dk K Sarkar
Fetal alcohol exposure (FAE) is known to increase prolactin (PRL) secretion from the pituitary lactotropes. In this study we determined whether microRNAs (miRs) are involved in FAE induced alteration in PRL release. We employed a rat animal model of FAE involving feeding pregnant Fisher 344 rats with a liquid diet containing 6.7% alcohol between gestational day 7 to 21 (AF). Both cyclic and estradiol implanted FAE females showed increased levels of plasma PRL and pituitary PRL mRNA but reduced levels of pituitary dopamine D2 receptor (D2R) and its short spliced form (D2S)...
July 14, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28694859/interplay-between-prolactin-and-pathogenesis-of-psoriasis-vulgaris
#4
Delia Botezatu, Mihaela Tovaru, Simona-Roxana Georgescu, Oana-Diana Leahu, Calin Giurcaneanu, Antoanela Curici
INTRODUCTION: The polypeptide hormone prolactin (PRL) represents the pituitary modulator of lactation and reproduction. Currently, we discuss the wide range of PRL actions "beyond the mammary horizon". Multiple studies had showed the role of PRL as a cytokine, with comparable structural motifs, similar receptor structures and signal transduction pathways. Almost two decades ago it was fi rst hypothesized that PRL acts as a neuroendocrine modulator of both skin epithelial growth and the skin immune system...
September 2016: Mædica
https://www.readbyqxmd.com/read/28692485/safety-and-tolerability-of-cariprazine-in-patients-with-acute-exacerbation-of-schizophrenia-a-pooled-analysis-of-four-phase-ii-iii-randomized-double-blind-placebo-controlled-studies
#5
Willie Earley, Suresh Durgam, Kaifeng Lu, István Laszlovszky, Marc Debelle, John M Kane
Cariprazine, a potent dopamine D3 and D2 receptor partial agonist antipsychotic with preferential binding to D3 receptors, is Food and Drug Administration approved for treating schizophrenia and manic or mixed episodes of bipolar I disorder. A post-hoc safety/tolerability analysis of data from the four acute trials in the cariprazine schizophrenia clinical development program (NCT00404573; NCT00694707; NCT01104766; NCT01104779) was carried out using the overall safety population (all patients who received ≥1 dose of study drug) and modal daily dose subgroups (1...
July 7, 2017: International Clinical Psychopharmacology
https://www.readbyqxmd.com/read/28691383/different-origins-of-two-corpora-lutea-recovered-from-a-pregnant-african-elephant-loxodonta-africana
#6
Y Yamamoto, K Nagaoka, Y Kamite, G Watanabe, T Allen, F Stansfield, K Taya
Elephant ovaries contain multiple corpora lutea (CLs) throughout pregnancy. Two CLs (P-1 and P-2) collected from a pregnant African elephant were used to investigate their origin and physiological state in this study. The mRNA expressions of prolactin receptor, CYP11A and inhibin betaB subunit were higher in P-2 than in P-1, while LHCGR and inhibin betaA subunit mRNA were higher in P-1 than in P-2. Protein expression of cleaved caspase-3 was detected in P-1 but not in P-2. These results suggest different origins for the two CLs in this one pregnant elephant, and we also demonstrated the production of bioactive prolactin by the elephant placenta...
July 9, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28690611/insight-into-the-endocrine-system-and-the-immune-system-a-review-of-the-inflammatory-role-of-prolactin-in-rheumatoid-arthritis-and-psoriatic-arthritis
#7
REVIEW
Man W Tang, Samuel Garcia, Danielle M Gerlag, Paul P Tak, Kris A Reedquist
Rheumatoid arthritis (RA) is a chronic autoimmune disease that affects females three times more frequently than males. A potential role for hormones, such as prolactin (PRL), may in part explain this phenomenon. The risk of developing RA is increased in women who are lactating after the first pregnancy, which might be related to breastfeeding and the release of PRL. Other studies found a protective effect of PRL on RA development. Some studies have reported that hyperprolactinemia is more common in RA and serum PRL levels are correlated with several disease parameters, although others could not confirm these findings...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28689816/a-novel-role-for-dopamine-signaling-in-the-pathogenesis-of-bone-loss-from-the-atypical-antipsychotic-drug-risperidone-in-female-mice
#8
Katherine J Motyl, Megan Beauchemin, Deborah Barlow, Phuong T Le, Kenichi Nagano, Annika Treyball, Anisha Contractor, Roland Baron, Clifford J Rosen, Karen L Houseknecht
Atypical antipsychotic (AA) drugs, including risperidone (RIS), are used to treat schizophrenia, bipolar disorder, and autism, and are prescribed off-label for other mental health issues. AA drugs are associated with severe metabolic side effects of obesity and type 2 diabetes. Cross-sectional and longitudinal data also show that risperidone causes bone loss and increases fracture risk in both men and women. There are several potential mechanisms of bone loss from RIS. One is hypogonadism due to hyperprolactinemia from dopamine receptor antagonism...
July 6, 2017: Bone
https://www.readbyqxmd.com/read/28678802/mir-182-aids-in-receptive-endometrium-development-in-dairy-goats-by-down-regulating-ptn-expression
#9
Lei Zhang, Xiaorui Liu, Junze Liu, Zhanqin Zhou, Yuxuan Song, Binyun Cao, Xiaopeng An
Increasing evidence has shown that miRNAs play important roles in endometrium development during the menstrual cycle in humans and many other animals. Our previous data indicated that miR-182 levels increase 15.55-fold and pleiotrophin (PTN) levels decrease 20.97-fold in the receptive endometrium (RE, D15) compared with the pre-receptive endometrium (PE, D5) in dairy goats. The present study shows that miR-182 is widely expressed in different tissues of dairy goats and that its expression levels are regulated by E2 and P4 in endometrial epithelium cells (EECs)...
2017: PloS One
https://www.readbyqxmd.com/read/28676702/extracellular-matrix-promotes-clathrin-dependent-endocytosis-of-prolactin-and-stat5-activation-in-differentiating-mammary-epithelial-cells
#10
Rebecca E Bridgewater, Charles H Streuli, Patrick T Caswell
The hormone prolactin promotes lactational differentiation of mammary epithelial cells (MECs) via its cognate receptor and the downstream JAK2-STAT5a signalling pathway. In turn this regulates transcription of milk protein genes. Prolactin signalling depends on a cross-talk with basement membrane extracellular matrix (ECM) via β1 integrins which activate both ILK and Rac1 and are required for STAT5a activation and lactational differentiation. Endocytosis is an important regulator of signalling. It can both enhance and suppress cytokine signalling, although the role of endocytosis for prolactin signalling is not known...
July 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28674764/a-pilot-study-of-cabergoline-for-the-treatment-of-metastatic-breast-cancer
#11
Ricardo Costa, C A Santa-Maria, D M Scholtens, S Jain, L Flaum, W J Gradishar, C V Clevenger, V G Kaklamani
PURPOSE: The prolactin (PRL) receptor is over-expressed in breast cancer, and pre-clinical data indicate that it contributes to breast oncogenesis. Cabergoline is a potent dopamine receptor agonist of D2 receptors and has a direct inhibitory effect on pituitary PRL secretion. METHODS: A phase II study of cabergoline in patients with metastatic breast cancer was conducted. The primary end point of the study was to determine the clinical benefit rate (CBR) at 2 months...
July 3, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28654010/effects-of-pup-separation-on-stress-response-in-postpartum-female-rats
#12
Manu Kalyani, Phyllis Callahan, James M Janik, Haifei Shi
There is a complex collection of neuroendocrine function during the postpartum period. Prolactin (PRL) released by suckling stimulus and its PRL receptors (PRL-R) in the central nervous system (CNS) are involved in hyporesponsiveness of the hypothalamic-pituitary-adrenal (HPA) axis in lactating mammals including rodents and humans. It is not clear how long it takes to reestablish the attenuated HPA axis activity of lactating rats to a pre-pregnancy state after pup separation. We first tested the hypothesis that HPA axis activity in response to an acute stress in postpartum rats would return to a pre-pregnancy state after pup separation...
June 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28652136/evolution-of-the-receptors-for-growth-hormone-prolactin-erythropoietin-and-thrombopoietin-in-relation-to-the-vertebrate-tetraploidizations
#13
Daniel Ocampo Daza, Dan Larhammar
The receptors for the pituitary hormones growth hormone (GH), prolactin (PRL) and somatolactin (SL), and the hematopoietic hormones erythropoietin (EPO) and thrombopoietin (TPO), comprise a structurally related family in the superfamily of cytokine class-I receptors. GH, PRL and SL receptors have a wide variety of effects in development, osmoregulation, metabolism and stimulation of growth, while EPO and TPO receptors guide the production and differentiation of erythrocytes and thrombocytes, respectively. The evolution of the receptors for GH, PRL and SL has been partially investigated by previous reports suggesting different time points for the hormone and receptor gene duplications...
June 23, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28652133/acute-salinity-tolerance-and-the-control-of-two-prolactins-and-their-receptors-in-the-nile-tilapia-oreochromis-niloticus-and-mozambique-tilapia-o-mossambicus-a-comparative-study
#14
Yoko Yamaguchi, Jason P Breves, Maria C Haws, Darren T Lerner, E Gordon Grau, Andre P Seale
Osmoregulation in vertebrates is largely controlled by the neuroendocrine system. Prolactin (PRL) is critical for the survival of euryhaline teleosts in fresh water by promoting ion retention. In the euryhaline Mozambique tilapia (Oreochromis mossambicus), pituitary PRL cells release two PRL isoforms, PRL188 and PRL177, in response to a fall in extracellular osmolality. Both PRLs function via two PRL receptors (PRLRs) denoted PRLR1 and PRLR2. We conducted a comparative study using the Nile tilapia (O. niloticus), a close relative of Mozambique tilapia that is less tolerant to increases in environmental salinity, to investigate the regulation of PRLs and PRLRs upon acute hyperosmotic challenges in vivo and in vitro...
June 23, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28647739/antipsychotic-induced-dopamine-supersensitivity-psychosis-pharmacology-criteria-and-therapy
#15
Guy Chouinard, Anne-Noël Samaha, Virginie-Anne Chouinard, Charles-Siegfried Peretti, Nobuhisa Kanahara, Masayuki Takase, Masaomi Iyo
The first-line treatment for psychotic disorders remains antipsychotic drugs with receptor antagonist properties at D2-like dopamine receptors. However, long-term administration of antipsychotics can upregulate D2 receptors and produce receptor supersensitivity manifested by behavioral supersensitivity to dopamine stimulation in animals, and movement disorders and supersensitivity psychosis (SP) in patients. Antipsychotic-induced SP was first described as the emergence of psychotic symptoms with tardive dyskinesia (TD) and a fall in prolactin levels following drug discontinuation...
2017: Psychotherapy and Psychosomatics
https://www.readbyqxmd.com/read/28643852/therapeutic-d2-3-receptor-occupancies-and-response-with-low-amisulpride-blood-concentrations-in-very-late-onset-schizophrenia-like-psychosis-vloslp
#16
Suzanne Reeves, Kate Eggleston, Elizabeth Cort, Emma McLachlan, Stuart Brownings, Akshay Nair, Suki Greaves, Alan Smith, Joel Dunn, Paul Marsden, Robert Kessler, David Taylor, Julie Bertrand, Robert Howard
OBJECTIVE: Antipsychotic drug sensitivity in very late-onset schizophrenia-like psychosis (VLOSLP) is well documented, but poorly understood. This study aimed to investigate blood drug concentration, D2/3 receptor occupancy and outcome in VLOSLP during open amisulpride prescribing, and compare this with Alzheimer's disease (AD). METHODS: Blood drug concentration, prolactin, symptoms and extrapyramidal side-effects (EPS) were serially assessed during dose titration...
June 23, 2017: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28634745/prolactin-function-and-putative-expression-in-the-brain
#17
REVIEW
Erika Alejandra Cabrera-Reyes, Ofelia Limón-Morales, Nadia Alejandra Rivero-Segura, Ignacio Camacho-Arroyo, Marco Cerbón
INTRODUCTION: Prolactin is a peptide hormone mainly synthetized and secreted by the anterior pituitary gland, but also by extrapituitary tissues, such as mammary gland, decidua, prostate, skin, and possibly the brain. Similarly, prolactin receptor is expressed in the pituitary gland, many peripheral tissues, and in contrast to prolactin, its receptor has been consistently detected in several brain regions, such as cerebral cortex, olfactory bulb, hypothalamus, hippocampus, amygdala, among others...
August 2017: Endocrine
https://www.readbyqxmd.com/read/28627372/regulatory-role-of-melatonin-and-bmp-4-in-prolactin-production-by-rat-pituitary-lactotrope-gh3-cells
#18
Kanako Ogura-Ochi, Satoshi Fujisawa, Nahoko Iwata, Motoshi Komatsubara, Yuki Nishiyama, Naoko Tsukamoto-Yamauchi, Kenichi Inagaki, Jun Wada, Fumio Otsuka
The effects of melatonin on prolactin production and its regulatory mechanism remain uncertain. We investigated the regulatory role of melatonin in prolactin production using rat pituitary lactotrope GH3 cells by focusing on the bone morphogenetic protein (BMP) system. Melatonin receptor activation, induced by melatonin and its receptor agonist ramelteon, significantly suppressed basal and forskolin-induced prolactin secretion and prolactin mRNA expression in GH3 cells. The melatonin MT2 receptor was predominantly expressed in GH3 cells, and the inhibitory effects of melatonin on prolactin production were reversed by treatment with the receptor antagonist luzindole, suggesting functional involvement of MT2 action in the suppression of prolactin release...
June 13, 2017: Peptides
https://www.readbyqxmd.com/read/28615773/cabergoline-induced-mania-in-a-patient-of-pituitary-microadenoma
#19
Satyakam Mohapatra, Mihir Ranjan Nayak
Cabergoline, a dopamine agonist agent, is commonly used in the treatment of hyperprolactinemia, Parkinson's disease, restless leg syndrome, and antipsychotic-induced prolactin elevation. It is generally well tolerated as compared to other dopamine agonist agents due to its more selective D2 receptor agonistic effect. We present a case of a 25-year-old female who developed manic episode, following the use of cabergoline for treatment of pituitary microadenoma. We suggest that physicians should carefully screen patients before initiating cabergoline therapy and at-risk patients may benefit from more frequent monitoring and cessation of therapy at the earliest safe juncture...
May 2017: Indian Journal of Psychological Medicine
https://www.readbyqxmd.com/read/28605125/isoflavones-and-their-metabolites-influence-the-milk-component-synthesis-ability-of-mammary-epithelial-cells-through-prolactin-stat5-signaling
#20
Yusaku Tsugami, Kota Matsunaga, Takahiro Suzuki, Takanori Nishimura, Ken Kobayashi
SCOPE: Isoflavones are a class of polyphonic compounds present in legumes and are called phytoestrogens because of their estrogen-like activity. Estrogen influences the behavior of mammary epithelial cells (MECs) during pregnancy and lactation. In this study, we investigated the direct influences of isoflavones and their metabolites in milk production ability of MECs. METHODS AND RESULTS: Mouse MECs were cultured with prolactin and dexamethasone (glucocorticoid analog) to induce milk production ability...
June 12, 2017: Molecular Nutrition & Food Research
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