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Yakupova EI, Abramicheva PA, Bocharnikov AD, Andrianova NV, Plotnikov EY. Biomarkers of the End-Stage Renal Disease Progression: Beyond the GFR. BIOCHEMISTRY. BIOKHIMIIA 2023; 88:1622-1644. [PMID: 38105029 DOI: 10.1134/s0006297923100164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Revised: 07/20/2023] [Accepted: 08/20/2023] [Indexed: 12/19/2023]
Abstract
Chronic kidney disease can progress to the end-stage renal disease (ESRD) characterized by a high risk of morbidity and mortality. ESRD requires immediate therapy or even dialysis or kidney transplantation, therefore, its timely diagnostics is critical for many patients. ESRD is associated with pathological changes, such as inflammation, fibrosis, endocrine disorders, and epigenetic changes in various cells, which could serve as ESRD markers. The review summarizes information on conventional and new ESRD biomarkers that can be assessed in kidney tissue, blood, and urine. Some biomarkers are specific to a particular pathology, while others are more universal. Here, we suggest several universal inflammatory, fibrotic, hormonal, and epigenetic markers indicative of severe deterioration of renal function and ESRD progression for improvement of ESRD diagnostics.
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Affiliation(s)
- Elmira I Yakupova
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119234, Russia.
| | - Polina A Abramicheva
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Alexey D Bocharnikov
- International School of Medicine of the Future, Sechenov First Moscow State Medical University, Moscow, 119992, Russia
| | - Nadezda V Andrianova
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Egor Y Plotnikov
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119234, Russia.
- Kulakov National Medical Research Center of Obstetrics, Gynecology, and Perinatology, Moscow, 117997, Russia
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Okada R, Suzuki M, Ito N, Hyodo S, Kikuyama S. A novel type of prolactin expressed in the bullfrog pituitary specifically during the larval period. Gen Comp Endocrinol 2019; 276:77-85. [PMID: 30735673 DOI: 10.1016/j.ygcen.2019.02.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 02/02/2019] [Accepted: 02/04/2019] [Indexed: 11/24/2022]
Abstract
Prolactin (PRL) is one of the major hormones that control amphibian metamorphosis. Recently, a PRL (PRL1B) gene that is different from the known PRL (PRL1A) gene has been found in the genomes of several amphibian species. In order to ascertain whether the PRL1B gene is expressed in the bullfrog (Rana catesbeiana) pituitary, cloning of cDNA encoding PRL1B in the pituitary of the premetamorphic bullfrog tadpole was attempted. The bullfrog PRL1B amino acid sequence predicted from the obtained cDNA showed 62% identity with those of Xenopus PRL1Bs that have been presumed from the genome sequences, whereas the sequence identity between bullfrog PRL1A and PRL1B was 48%. A molecular phylogenetic tree showed that bullfrog PRL1B is most appropriately grouped with amphibian PRL1Bs. Quantitative PCR analysis revealed that the mRNA expression levels of bullfrog PRL1B in the pituitary were high during pre- and prometamorphosis, sharply declined at metamorphic climax and became undetectable after metamorphosis. In contrast, PRL1A mRNA levels were relatively low during pre- and prometamorphosis, rose at climax and remained high after metamorphosis. Immunohistochemical study using antibodies against partial peptides of PRL1A and PRL1B revealed that most of the PRL1A- and PRL1B-immunoreactive cells in the larval pituitary were distributed separately, but that some of the cells immunoreactive with both antibodies were also present. Western blot analysis with the larval pituitary extract indicated that PRL1B-immunoreactive band appeared at the position of molecular weight ca. 22.1 kDa and PRL1A-immunoreactive band at the position of ca. 22.8 kDa. The results obtained in this experiment suggest the possibility that PRL1B plays as-yet-unknown role(s) during the pre-climactic period of metamorphosis. This is the first report on the existence of PRL1B as a protein in the amphibian larval pituitary.
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Affiliation(s)
- Reiko Okada
- Department of Biological Science, Faculty of Science, Shizuoka University, Shizuoka 422-8529, Japan.
| | - Masakazu Suzuki
- Department of Biological Science, Faculty of Science, Shizuoka University, Shizuoka 422-8529, Japan
| | - Nozomi Ito
- Department of Biological Science, Faculty of Science, Shizuoka University, Shizuoka 422-8529, Japan
| | - Susumu Hyodo
- Laboratory of Physiology, Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan
| | - Sakae Kikuyama
- Department of Biology, Faculty of Education and Integrated Sciences, Center for Advanced Biomedical Sciences, Waseda University, Tokyo 162-8480, Japan
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Yang Y, He G, Xu W, Liu X. ENaC mediates human extravillous trophblast cell line (HTR8/SVneo) invasion by regulating levels of matrix metalloproteinase 2 (MMP2). Placenta 2015; 36:587-93. [PMID: 25707741 DOI: 10.1016/j.placenta.2015.01.201] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 01/12/2015] [Accepted: 01/28/2015] [Indexed: 10/25/2022]
Abstract
INTRODUCTION Placenta dysfunction is thought to be the major etiological factor related to preeclampsia. The epithelial sodium channel (ENaC) has been localized in the apical plasma membrane of epithelia, mediating the active reabsorption of sodium in kidney, and be involved in the regulation of blood pressure. In previous studies, we found that the reduced expression of ENaC on placenta in preeclampsia patients. The aim of this study was to determine the role of MMP2 in the ENaC-induced trophoblast cell invasion ability, which is closely related to the occurrence of preeclampsia. METHODS Here we checked whether pregnancy related hormones human chorionic gonadotropin (HCG), prolactin and aldosterone could affect ENaC expression in the first trimester extravillous trophoblast cell line (HTR8/SVneo) by RT-PCR and Western blot. Cell invasion was studied by matrigel invasion assay. Tube formation assay was used to investigate the interaction between trophoblast cells and endothelial cells. The effects of ENaC on MMP2 were further determined by RT-PCR, western blot and gelatin zymography. RESULTS We demonstrated that HCG, prolactin and aldosterone could up-regulate the expression of αENaC in protein levels. Trophoblast cell invasion ability is stimulated when αENaC was up-regulated by aldosterone, and inhibited when ENaC was down-regulated by amiloride and αENaC specific RNAi (SiENA/ENaC). The interaction between HTR8/SVneo cells and HUVEC cells was enhanced when treated with aldosterone and weakened when treated with amiloride and SiRNA/ENaC. Amiloride and SiRNA/ENaC could inhibit MMP2 expression and activity. DISSCUTION Aldosterone induced ENaC activity is important for trophoblast cells invasion. The results also indicate that ENaC could mediate trophoblast cells invasion ability through regulating expression and activity of matrix metalloproteinase-2 (MMP2).
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Affiliation(s)
- Y Yang
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - G He
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - W Xu
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu 610041, China; Joint Laboratory of Reproductive Medicine, Key Laboratory of BirthDefects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu 610041, China.
| | - X Liu
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu 610041, China.
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Greenlee MM, Mitzelfelt JD, Duke BJ, Al-Khalili O, Bao HF, Eaton DC. Prolactin stimulates sodium and chloride ion channels in A6 renal epithelial cells. Am J Physiol Renal Physiol 2015; 308:F697-705. [PMID: 25587116 DOI: 10.1152/ajprenal.00270.2014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Accepted: 01/07/2015] [Indexed: 11/22/2022] Open
Abstract
Many hormonal pathways contribute to the regulation of renal epithelial sodium channel (ENaC) function, a key process for maintaining blood volume and controlling blood pressure. In the present study, we examined whether the peptide hormone prolactin (PRL) regulates ENaC function in renal epithelial cells (A6). Basolateral application of several different concentrations of PRL dramatically stimulated the transepithelial current in A6 cells, increasing both amiloride-sensitive (ENaC) and amiloride-insensitive currents. Using cell-attached patch clamp, we determined that PRL increased both the number (N) and open probability (Po) of ENaC present in the apical membrane. Inhibition of PKA with H-89 abolished the effect of PRL on amiloride-sensitive and insensitive transepithelial currents and eliminated the increase in ENaC NPo with PRL exposure. PRL also increased cAMP in A6 cells, consistent with signaling through the cAMP-dependent PKA pathway. We also identified that PRL induced activity of a 2-pS anion channel with outward rectification, electrophysiological properties consistent with ClC4 or ClC5. RT-PCR only detected ClC4, but not ClC5 transcripts. Here, we show for the first time that PRL activates sodium and chloride transport in renal epithelial cells via ENaC and ClC4.
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Affiliation(s)
- Megan M Greenlee
- Department of Physiology, Emory University School of Medicine, Atlanta, Georgia
| | | | - Billie Jeanne Duke
- Department of Physiology, Emory University School of Medicine, Atlanta, Georgia
| | - Otor Al-Khalili
- Department of Physiology, Emory University School of Medicine, Atlanta, Georgia
| | - Hui-Fang Bao
- Department of Physiology, Emory University School of Medicine, Atlanta, Georgia
| | - Douglas C Eaton
- Department of Physiology, Emory University School of Medicine, Atlanta, Georgia
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El-Chami C, Haslam IS, Steward MC, O'Neill CA. Role of organic osmolytes in water homoeostasis in skin. Exp Dermatol 2014; 23:534-7. [DOI: 10.1111/exd.12473] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/13/2014] [Indexed: 11/26/2022]
Affiliation(s)
- Cécile El-Chami
- Institute of Inflammation and Repair; Faculty of Medical and Human Sciences; University of Manchester; Manchester UK
| | - Iain S. Haslam
- Institute of Inflammation and Repair; Faculty of Medical and Human Sciences; University of Manchester; Manchester UK
| | | | - Catherine A. O'Neill
- Institute of Inflammation and Repair; Faculty of Medical and Human Sciences; University of Manchester; Manchester UK
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Kamenický P, Mazziotti G, Lombès M, Giustina A, Chanson P. Growth hormone, insulin-like growth factor-1, and the kidney: pathophysiological and clinical implications. Endocr Rev 2014; 35:234-81. [PMID: 24423979 DOI: 10.1210/er.2013-1071] [Citation(s) in RCA: 137] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Besides their growth-promoting properties, GH and IGF-1 regulate a broad spectrum of biological functions in several organs, including the kidney. This review focuses on the renal actions of GH and IGF-1, taking into account major advances in renal physiology and hormone biology made over the last 20 years, allowing us to move our understanding of GH/IGF-1 regulation of renal functions from a cellular to a molecular level. The main purpose of this review was to analyze how GH and IGF-1 regulate renal development, glomerular functions, and tubular handling of sodium, calcium, phosphate, and glucose. Whenever possible, the relative contributions, the nephronic topology, and the underlying molecular mechanisms of GH and IGF-1 actions were addressed. Beyond the physiological aspects of GH/IGF-1 action on the kidney, the review describes the impact of GH excess and deficiency on renal architecture and functions. It reports in particular new insights into the pathophysiological mechanism of body fluid retention and of changes in phospho-calcium metabolism in acromegaly as well as of the reciprocal changes in sodium, calcium, and phosphate homeostasis observed in GH deficiency. The second aim of this review was to analyze how the GH/IGF-1 axis contributes to major renal diseases such as diabetic nephropathy, renal failure, renal carcinoma, and polycystic renal disease. It summarizes the consequences of chronic renal failure and glucocorticoid therapy after renal transplantation on GH secretion and action and questions the interest of GH therapy in these conditions.
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Affiliation(s)
- Peter Kamenický
- Assistance Publique-Hôpitaux de Paris (P.K., M.L., P.C.), Hôpital de Bicêtre, Service d'Endocrinologie et des Maladies de la Reproduction, Centre de Référence des Maladies Endocriniennes Rares de la Croissance, Le Kremlin Bicêtre F-94275, France; Univ Paris-Sud (P.K., M.L., P.C.), Faculté de Médecine Paris-Sud, Le Kremlin Bicêtre F-94276, France; Inserm Unité 693 (P.K., M.L., P.C.), Le Kremlin Bicêtre F-94276, France; and Department of Clinical and Experimental Sciences (A.G., G.M.), Chair of Endocrinology, University of Brescia, 25125 Brescia, Italy
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Haslam IS, Roubos EW, Mangoni ML, Yoshizato K, Vaudry H, Kloepper JE, Pattwell DM, Maderson PFA, Paus R. From frog integument to human skin: dermatological perspectives from frog skin biology. Biol Rev Camb Philos Soc 2013; 89:618-55. [DOI: 10.1111/brv.12072] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Revised: 10/03/2013] [Accepted: 10/22/2013] [Indexed: 12/15/2022]
Affiliation(s)
- Iain S. Haslam
- The Dermatology Centre, Salford Royal NHS Foundation Trust, Institute of Inflammation and Repair; University of Manchester; Oxford Road Manchester M13 9PT U.K
| | - Eric W. Roubos
- Department of Anatomy; Radboud University Medical Centre; Geert Grooteplein Noord 2, 6525 EZ, Nijmegen P.O. Box 9101, 6500 HB Nijmegen The Netherlands
| | - Maria Luisa Mangoni
- Department of Biochemical Sciences, Istituto Pasteur-Fondazione Cenci Bolognetti; La Sapienza University of Rome, Piazzale Aldo Moro, 5-00185; Rome Italy
| | - Katsutoshi Yoshizato
- Academic Advisors Office, Synthetic Biology Research Center; Osaka City University Graduate School of Medicine; Osaka Japan
- Phoenixbio Co. Ltd; 3-4-1, Kagamiyama; Higashihiroshima Hiroshima 739-0046 Japan
| | - Hubert Vaudry
- European Institute for Peptide Research; University of Rouen; Mont-Saint-Aignan Place Emile Blondel 76821 France
- INSERM U-982, CNRS; University of Rouen; Mont-Saint-Aignan Place Emile Blondel 76821 France
| | - Jennifer E. Kloepper
- Klinik für Dermatologie, Allergologie und Venerologie; Universitätsklinikum Schleswig-Holstein, Ratzeburger Allee 160; 23538 Lübeck Germany
| | - David M. Pattwell
- Leahurst Campus, Institute of Learning & Teaching; School of Veterinary Science, University of Liverpool; Neston CH64 7TE U.K
| | | | - Ralf Paus
- The Dermatology Centre, Salford Royal NHS Foundation Trust, Institute of Inflammation and Repair; University of Manchester; Oxford Road Manchester M13 9PT U.K
- Klinik für Dermatologie, Allergologie und Venerologie; Universitätsklinikum Schleswig-Holstein, Ratzeburger Allee 160; 23538 Lübeck Germany
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8
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Kaptan E, Bolkent S. Seasonal lectin binding variations of thumb pad in the frog (Pelophylax ridibundus). J Morphol 2013; 275:76-86. [DOI: 10.1002/jmor.20198] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Revised: 07/04/2013] [Accepted: 08/14/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Engin Kaptan
- Department of Biology, Faculty of Science, Istanbul University, Vezneciler, 34134, Istanbul, Turkey
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Sengezer-Inceli M, Murathanoglu O, Castillo SS, Sancar-Bas S, Kaptan E. Distribution of prolactin receptor in frog (Rana ridibunda) dorsal skin during hibernation. ACTA BIOLOGICA HUNGARICA 2011; 62:349-60. [PMID: 22119865 DOI: 10.1556/abiol.62.2011.4.2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/06/2022]
Abstract
The role of prolactin in the regulation of frog skin functions is still unclear particularly during environmental changes. In this study, prolactin receptor (PRLR) was detected in active and hibernating frog dorsal skin using immunohistochemical method. PRLR immunoreactivity in active frogs was observed in the epidermis, in the secretory epithelium of granular glands and the secretory channel cells of the glands. Myoepithelial cells of granular glands that started accumulating secretory material or those with a full lumen were PRLR immunoreactive, while some myoepithelial cells of empty granular glands were negative for PRLR. In hibernating frogs, this immunoreactivity was observed in the same regions; however, immunoreactivity was more intense than that in active frogs. PCNA was employed for detection of proliferative activity of PRL in the dorsal skin, and immunoreactivity was detected in the nuclei of a few epidermis cells and in the duct of glands of active frogs. The number of immunoreactive nuclei in these regions increased in hibernating and in prolactin injected groups. We conclude that prolactin provides morphological and functional integrity of skin stimulating the proliferation and regulating the function of granular glands and plays an important role in the adaptation of amphibians to the long winter period.
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Localization of prolactin receptor in the dorsal and ventral skin of the frog (Rana ridibunda). Biologia (Bratisl) 2010. [DOI: 10.2478/s11756-009-0230-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Galas L, Raoult E, Tonon MC, Okada R, Jenks BG, Castaño JP, Kikuyama S, Malagon M, Roubos EW, Vaudry H. TRH acts as a multifunctional hypophysiotropic factor in vertebrates. Gen Comp Endocrinol 2009; 164:40-50. [PMID: 19435597 DOI: 10.1016/j.ygcen.2009.05.003] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2009] [Revised: 04/28/2009] [Accepted: 05/05/2009] [Indexed: 11/17/2022]
Abstract
Thyrotropin-releasing hormone (TRH) is the first hypothalamic hypophysiotropic neuropeptide whose sequence has been chemically characterized. The primary structure of TRH (pGlu-His-Pro-NH(2)) has been fully conserved across the vertebrate phylum. TRH is generated from a large precursor protein that contains multiple repeats of the TRH progenitor tetrapeptide Gln-His-Pro-Gly. In all tetrapods, TRH-expressing neurons located in the hypothalamus project towards the external zone of the median eminence while in teleosts they directly innervate the pars distalis of the pituitary. In addition, in frogs and teleosts, a bundle of TRH-containing fibers terminate in the neurointermediate lobe of the pituitary gland. Although TRH was originally named for its ability to trigger the release of thyroid-stimulating hormone (TSH) in mammals, it later became apparent that it exerts multiple, species-dependent hypophysiotropic activities. Thus, in fish TRH stimulates growth hormone (GH) and prolactin (PRL) release but does not affect TSH secretion. In amphibians, TRH is a marginal stimulator of TSH release in adult frogs, not in tadpoles, and a major releasing factor for GH and PRL. In birds, TRH triggers TSH and GH secretion. In mammals, TRH stimulates TSH, GH and PRL release. In fish and amphibians, TRH is also a very potent stimulator of alpha-melanocyte-stimulating hormone release. Because the intermediate lobe of the pituitary of amphibians is composed by a single type of hormone-producing cells, the melanotrope cells, it is a suitable model in which to investigate the mechanism of action of TRH at the cellular and molecular level. The occurrence of large amounts of TRH in the frog skin and high concentrations of TRH in frog plasma suggests that, in amphibians, skin-derived TRH may exert hypophysiotropic functions.
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Affiliation(s)
- Ludovic Galas
- Regional Platform for Cell Imaging (PRIMACEN), European Institute for Peptide Research (IFRMP 23), University of Rouen, Mont-Saint-Aignan, France
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Kamenicky P, Viengchareun S, Blanchard A, Meduri G, Zizzari P, Imbert-Teboul M, Doucet A, Chanson P, Lombes M. Epithelial sodium channel is a key mediator of growth hormone-induced sodium retention in acromegaly. Endocrinology 2008; 149:3294-305. [PMID: 18388193 PMCID: PMC2527214 DOI: 10.1210/en.2008-0143] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Acromegalic patients present with volume expansion and arterial hypertension, but the renal sites and molecular mechanisms of direct antinatriuretic action of GH remain unclear. Here, we show that acromegalic GC rats, which are chronically exposed to very high levels of GH, exhibited a decrease of furosemide-induced natriuresis and an increase of amiloride-stimulated natriuresis compared with controls. Enhanced Na(+),K(+)-ATPase activity and altered proteolytic maturation of epithelial sodium channel (ENaC) subunits in the cortical collecting ducts (CCDs) of GC rats provided additional evidence for an increased sodium reabsorption in the late distal nephron under chronic GH excess. In vitro experiments on KC3AC1 cells, a murine CCD cell model, revealed the expression of functional GH receptors and IGF-I receptors coupled to activation of Janus kinase 2/signal transducer and activator of transcription 5, ERK, and AKT signaling pathways. That GH directly controls sodium reabsorption in CCD cells is supported by: 1) stimulation of transepithelial sodium transport inhibited by GH receptor antagonist pegvisomant; 2) induction of alpha-ENaC mRNA expression; and 3) identification of signal transducer and activator of transcription 5 binding to a response element located in the alpha-ENaC promoter, indicative of the transcriptional regulation of alpha-ENaC by GH. Our findings provide the first evidence that GH, in concert with IGF-I, stimulates ENaC-mediated sodium transport in the late distal nephron, accounting for the pathogenesis of sodium retention in acromegaly.
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Affiliation(s)
- Peter Kamenicky
- Récepteurs stéroïdiens : physiopathologie endocrinienne et métabolique
INSERM : U693IFR93Université Paris Sud - Paris XIFaculté de médecine
63, Rue Gabriel Peri
94276 LE KREMLIN BICETRE,FR
| | - Say Viengchareun
- Récepteurs stéroïdiens : physiopathologie endocrinienne et métabolique
INSERM : U693IFR93Université Paris Sud - Paris XIFaculté de médecine
63, Rue Gabriel Peri
94276 LE KREMLIN BICETRE,FR
| | - Anne Blanchard
- Centre d'Investigation Clinique
Hôpital européen Georges PompidouAP-HP75908
Paris,FR
| | - Geri Meduri
- Récepteurs stéroïdiens : physiopathologie endocrinienne et métabolique
INSERM : U693IFR93Université Paris Sud - Paris XIFaculté de médecine
63, Rue Gabriel Peri
94276 LE KREMLIN BICETRE,FR
- Centre d'Investigation Clinique
Hôpital européen Georges PompidouAP-HP75908
Paris,FR
| | - Philippe Zizzari
- Neurobiologie de la Croissance et de la Senescence
INSERM : U549Université Paris Descartes - Paris VCentre Paul Broca
2 Ter, Rue D'Alesia
75014 PARIS ,FR
| | | | - Alain Doucet
- UPMC, Institut des Cordeliers
CNRS : UMR7134Paris, 75006,FR
| | - Philippe Chanson
- Récepteurs stéroïdiens : physiopathologie endocrinienne et métabolique
INSERM : U693IFR93Université Paris Sud - Paris XIFaculté de médecine
63, Rue Gabriel Peri
94276 LE KREMLIN BICETRE,FR
- Service d'Endocrinologie et Maladies de la reproduction
AP-HPHôpital de Bicêtre, Le Kremlin Bicêtre 94275,FR
| | - Marc Lombes
- Récepteurs stéroïdiens : physiopathologie endocrinienne et métabolique
INSERM : U693IFR93Université Paris Sud - Paris XIFaculté de médecine
63, Rue Gabriel Peri
94276 LE KREMLIN BICETRE,FR
- Service d'Endocrinologie et Maladies de la reproduction
AP-HPHôpital de Bicêtre, Le Kremlin Bicêtre 94275,FR
- * Correspondence should be adressed to: Marc Lombes
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Vasotocin has the potential to inhibit basolateral Na(+)/K (+)-pump current across isolated skin of tree frog in vitro, via its V(2)-type receptor/cAMP pathway. J Comp Physiol B 2008; 178:957-62. [PMID: 18536923 DOI: 10.1007/s00360-008-0278-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2008] [Revised: 05/15/2008] [Accepted: 05/23/2008] [Indexed: 10/22/2022]
Abstract
Adult frog skin transports Na(+) from the apical to the basolateral side across the skin. Antidiuretic hormone (ADH) is involved in the regulation of Na(+) transport in both mammals and amphibians. We investigated the effect of arginine vasotocin (AVT), the ADH of amphibians, on the short-circuit current (SCC) across intact skin and on the basolateral Na(+)/K(+)-pump current across apically nystatin-permeabilized skin of the tree frog, Hyla japonica, in which the V(2)-type ADH receptor is expressed in vitro. In intact skin, 1 pM AVT had no effect on the SCC, but 10 nM AVT was sufficient to stimulate the SCC since 10 nM and 1 microM of AVT increased the SCC 3.2- and 3.4-fold, respectively (P > 0.9). However, in permeabilized skin, AVT (1 microM) decreased the Na(+)/K(+)-pump current to 0.79 times vehicle control. Similarly, 500 microM of 8Br-cAMP increased the SCC 3.2-fold, yet 1 mM of 8Br-cAMP decreased the Na(+)/K(+)-pump current to 0.76 times vehicle control. Arachidonic acid (10(-5) M) tended to decrease the Na(+)/K(+)-pump current. To judge from these in vitro experiments, AVT has the potential to inhibit the basolateral Na(+)/K(+)-pump current via the V(2)-type receptor/cAMP pathway in the skin of the tree frog.
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