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Kucharczyk P, Albano G, Deisl C, Ho TM, Bargagli M, Anderegg M, Wueest S, Konrad D, Fuster DG. Thiazides Attenuate Insulin Secretion Through Inhibition of Mitochondrial Carbonic Anhydrase 5b in β -Islet Cells in Mice. J Am Soc Nephrol 2023; 34:1179-1190. [PMID: 36927842 PMCID: PMC10356162 DOI: 10.1681/asn.0000000000000122] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 02/26/2023] [Indexed: 03/18/2023] Open
Abstract
SIGNIFICANCE STATEMENT Thiazide diuretics (thiazides) are among the most widely prescribed drugs worldwide, but their use is associated with glucose intolerance and new-onset diabetes mellitus. The molecular mechanisms remain elusive. Our study reveals that thiazides attenuate insulin secretion through inhibition of the mitochondrial carbonic anhydrase isoform 5b (CA5b) in pancreatic β cells. We furthermore discovered that pancreatic β cells express only one functional carbonic anhydrase isoform, CA5b, which is critical in replenishing oxaloacetate in the mitochondrial tricarboxylic acid (TCA) cycle (anaplerosis). These findings explain the mechanism for thiazide-induced glucose intolerance and reveal a fundamental role of CA5b in TCA cycle anaplerosis and insulin secretion in β cells. BACKGROUND Thiazide diuretics are associated with glucose intolerance and new-onset diabetes mellitus. Previous studies demonstrated that thiazides attenuate insulin secretion, but the molecular mechanisms remain elusive. We hypothesized that thiazides attenuate insulin secretion via one of the known molecular thiazide targets in β cells. METHODS We performed static insulin secretion experiments with islets of wild-type, Sodium/chloride co-transporter (NCC) (SLC12A3), and sodium-driven chloride/bicarbonate exchanger (NDCBE) (SLC4A8) knock-out (KO) mice and with murine Min6 cells with individual knockdown of carbonic anhydrase (CA) isoforms to identify the molecular target of thiazides in β cells. CA isoform 5b (CA5b) KO mice were then used to assess the role of the putative thiazide target CA5b in β -cell function and in mediating thiazide sensitivity in vitro and in vivo . RESULTS Thiazides inhibited glucose- and sulfonylurea-stimulated insulin secretion in islets and Min6 cells at pharmacologically relevant concentrations. Inhibition of insulin secretion by thiazides was CO 2 /HCO 3- -dependent, not additive to unselective CA inhibition with acetazolamide, and independent of extracellular potassium. By contrast, insulin secretion was unaltered in islets of mice lacking the known molecular thiazide targets NCC or NDCBE. CA expression profiling with subsequent knockdown of individual CA isoforms suggested mitochondrial CA5b as a molecular target. In support of these findings, thiazides significantly attenuated Krebs cycle anaplerosis through reduction of mitochondrial oxaloacetate synthesis. CA5b KO mice were resistant to thiazide-induced glucose intolerance, and thiazides did not alter insulin secretion in CA5b KO islets. CONCLUSIONS Thiazides attenuate insulin secretion via inhibition of the mitochondrial CA5b isoform in β cells of mice.
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Affiliation(s)
- Patrycja Kucharczyk
- Department of Nephrology and Hypertension, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- National Centre of Competence in Research (NCCR) TransCure, University of Bern, Bern, Switzerland
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Giuseppe Albano
- Department of Nephrology and Hypertension, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- National Centre of Competence in Research (NCCR) TransCure, University of Bern, Bern, Switzerland
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Christine Deisl
- Department of Nephrology and Hypertension, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- National Centre of Competence in Research (NCCR) TransCure, University of Bern, Bern, Switzerland
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Tin Manh Ho
- Department of Nephrology and Hypertension, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- National Centre of Competence in Research (NCCR) TransCure, University of Bern, Bern, Switzerland
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Matteo Bargagli
- Department of Nephrology and Hypertension, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- National Centre of Competence in Research (NCCR) TransCure, University of Bern, Bern, Switzerland
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Manuel Anderegg
- Department of Nephrology and Hypertension, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- National Centre of Competence in Research (NCCR) TransCure, University of Bern, Bern, Switzerland
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Stephan Wueest
- Division of Pediatric Endocrinology and Diabetology, University Children's Hospital, University of Zürich, Zürich, Switzerland
- Children's Research Center, University Children's Hospital, University of Zürich, Zürich, Switzerland
| | - Daniel Konrad
- Division of Pediatric Endocrinology and Diabetology, University Children's Hospital, University of Zürich, Zürich, Switzerland
- Children's Research Center, University Children's Hospital, University of Zürich, Zürich, Switzerland
| | - Daniel G. Fuster
- Department of Nephrology and Hypertension, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- National Centre of Competence in Research (NCCR) TransCure, University of Bern, Bern, Switzerland
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
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Pujol‐Giménez J, Mirzaa G, Blue EE, Albano G, Miller DE, Allworth A, Bennett JT, Byers PH, Chanprasert S, Chen J, Doherty D, Folta AB, Gillentine MA, Glass I, Hing A, Horike‐Pyne M, Leppig KA, Parhin A, Ranchalis J, Raskind WH, Rosenthal EA, Schwarze U, Sheppeard S, Strohbehn S, Sybert VP, Timms A, Wener M, Bamshad MJ, Hisama FM, Jarvik GP, Dipple KM, Hediger MA, Stergachis AB. Dominant-negative variant in SLC1A4 causes an autosomal dominant epilepsy syndrome. Ann Clin Transl Neurol 2023; 10:1046-1053. [PMID: 37194416 PMCID: PMC10270265 DOI: 10.1002/acn3.51786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/29/2023] [Accepted: 04/15/2023] [Indexed: 05/18/2023] Open
Abstract
SLC1A4 is a trimeric neutral amino acid transporter essential for shuttling L-serine from astrocytes into neurons. Individuals with biallelic variants in SLC1A4 are known to have spastic tetraplegia, thin corpus callosum, and progressive microcephaly (SPATCCM) syndrome, but individuals with heterozygous variants are not thought to have disease. We identify an 8-year-old patient with global developmental delay, spasticity, epilepsy, and microcephaly who has a de novo heterozygous three amino acid duplication in SLC1A4 (L86_M88dup). We demonstrate that L86_M88dup causes a dominant-negative N-glycosylation defect of SLC1A4, which in turn reduces the plasma membrane localization of SLC1A4 and the transport rate of SLC1A4 for L-serine.
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Affiliation(s)
- Jonai Pujol‐Giménez
- Department of Nephrology and HypertensionUniversity Hospital Bern, InselspitalBernSwitzerland
- Department of Biomedical ResearchUniversity of BernBernSwitzerland
| | - Ghayda Mirzaa
- Center for Integrative Brain ResearchSeattle Children's Research InstituteSeattleWashingtonUSA
- Department of PediatricsUniversity of WashingtonSeattleWashingtonUSA
- Brotman Baty Institute for Precision MedicineSeattleWashingtonUSA
| | - Elizabeth E. Blue
- Brotman Baty Institute for Precision MedicineSeattleWashingtonUSA
- University of Washington, Institute of Public Health GeneticsSeattleWashingtonUSA
- Department of Laboratory Medicine and PathologyUniversity of Washington School of MedicineSeattleWashingtonUSA
| | - Giuseppe Albano
- Department of Nephrology and HypertensionUniversity Hospital Bern, InselspitalBernSwitzerland
- Department of Biomedical ResearchUniversity of BernBernSwitzerland
| | - Danny E. Miller
- Department of PediatricsUniversity of WashingtonSeattleWashingtonUSA
- Brotman Baty Institute for Precision MedicineSeattleWashingtonUSA
- Department of MedicineUniversity of Washington School of MedicineSeattleWashingtonUSA
| | - Aimee Allworth
- University of Washington, Institute of Public Health GeneticsSeattleWashingtonUSA
| | - James T. Bennett
- Center for Integrative Brain ResearchSeattle Children's Research InstituteSeattleWashingtonUSA
- Department of PediatricsUniversity of WashingtonSeattleWashingtonUSA
- Brotman Baty Institute for Precision MedicineSeattleWashingtonUSA
- Center for Developmental Biology and Regenerative MedicineSeattle Children's Research InstituteSeattleWashingtonUSA
| | - Peter H. Byers
- University of Washington, Institute of Public Health GeneticsSeattleWashingtonUSA
- Department of MedicineUniversity of Washington School of MedicineSeattleWashingtonUSA
| | - Sirisak Chanprasert
- University of Washington, Institute of Public Health GeneticsSeattleWashingtonUSA
| | - Jingheng Chen
- Department of Laboratory Medicine and PathologyUniversity of Washington School of MedicineSeattleWashingtonUSA
| | - Daniel Doherty
- Department of PediatricsUniversity of WashingtonSeattleWashingtonUSA
- Brotman Baty Institute for Precision MedicineSeattleWashingtonUSA
| | - Andrew B. Folta
- University of Washington, Institute of Public Health GeneticsSeattleWashingtonUSA
| | | | - Ian Glass
- Department of PediatricsUniversity of WashingtonSeattleWashingtonUSA
- Brotman Baty Institute for Precision MedicineSeattleWashingtonUSA
| | - Anne Hing
- Department of PediatricsUniversity of WashingtonSeattleWashingtonUSA
| | - Martha Horike‐Pyne
- University of Washington, Institute of Public Health GeneticsSeattleWashingtonUSA
| | - Kathleen A. Leppig
- Group Health CooperativeKaiser Permanente WashingtonSeattleWashingtonUSA
| | - Azma Parhin
- University of Washington, Institute of Public Health GeneticsSeattleWashingtonUSA
| | - Jane Ranchalis
- University of Washington, Institute of Public Health GeneticsSeattleWashingtonUSA
| | - Wendy H. Raskind
- University of Washington, Institute of Public Health GeneticsSeattleWashingtonUSA
| | | | - Ulrike Schwarze
- Department of MedicineUniversity of Washington School of MedicineSeattleWashingtonUSA
| | - Sam Sheppeard
- University of Washington, Institute of Public Health GeneticsSeattleWashingtonUSA
| | - Samuel Strohbehn
- University of Washington, Institute of Public Health GeneticsSeattleWashingtonUSA
| | - Virginia P. Sybert
- University of Washington, Institute of Public Health GeneticsSeattleWashingtonUSA
| | - Andrew Timms
- Center for Developmental Biology and Regenerative MedicineSeattle Children's Research InstituteSeattleWashingtonUSA
| | - Mark Wener
- Department of MedicineUniversity of Washington School of MedicineSeattleWashingtonUSA
| | - Michael J. Bamshad
- Department of PediatricsUniversity of WashingtonSeattleWashingtonUSA
- Brotman Baty Institute for Precision MedicineSeattleWashingtonUSA
| | - Fuki M. Hisama
- Brotman Baty Institute for Precision MedicineSeattleWashingtonUSA
- University of Washington, Institute of Public Health GeneticsSeattleWashingtonUSA
| | - Gail P. Jarvik
- Brotman Baty Institute for Precision MedicineSeattleWashingtonUSA
- University of Washington, Institute of Public Health GeneticsSeattleWashingtonUSA
- Genome SciencesUniversity of Washington School of MedicineSeattleWashingtonUSA
| | - Katrina M. Dipple
- Department of PediatricsUniversity of WashingtonSeattleWashingtonUSA
- Brotman Baty Institute for Precision MedicineSeattleWashingtonUSA
| | - Matthias A. Hediger
- Department of Nephrology and HypertensionUniversity Hospital Bern, InselspitalBernSwitzerland
- Department of Biomedical ResearchUniversity of BernBernSwitzerland
| | - Andrew B. Stergachis
- Brotman Baty Institute for Precision MedicineSeattleWashingtonUSA
- University of Washington, Institute of Public Health GeneticsSeattleWashingtonUSA
- Genome SciencesUniversity of Washington School of MedicineSeattleWashingtonUSA
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Augustynek B, Gyimesi G, Dernič J, Sallinger M, Albano G, Klesse GJ, Kandasamy P, Grabmayr H, Frischauf I, Fuster DG, Peinelt C, Hediger MA, Bhardwaj R. Discovery of novel gating checkpoints in the Orai1 calcium channel by systematic analysis of constitutively active mutants of its paralogs and orthologs. Cell Calcium 2022; 105:102616. [PMID: 35792401 DOI: 10.1016/j.ceca.2022.102616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 06/17/2022] [Accepted: 06/20/2022] [Indexed: 11/24/2022]
Abstract
In humans, there are three paralogs of the Orai Ca2+ channel that form the core of the store-operated calcium entry (SOCE) machinery. While the STIM-mediated gating mechanism of Orai channels is still under active investigation, several artificial and natural variants are known to cause constitutive activity of the human Orai1 channel. Surprisingly, little is known about the conservation of the gating checkpoints among the different human Orai paralogs and orthologs in other species. In our work, we show that the mutation corresponding to the activating mutation H134A in transmembrane helix 2 (TM2) of human Orai1 also activates Orai2 and Orai3, likely via a similar mechanism. However, this cross-paralog conservation does not apply to the "ANSGA" nexus mutations in TM4 of human Orai1, which is reported to mimic the STIM1-activated state of the channel. In investigating the mechanistic background of these differences, we identified two positions, H171 and F246 in human Orai1, that are not conserved among paralogs and that seem to be crucial for the channel activation triggered by the "ANSGA" mutations in Orai1. However, mutations of the same residues still allow gating of Orai1 by STIM1, suggesting that the ANSGA mutant of Orai1 may not be a surrogate for the STIM1-activated state of the Orai1 channel. Our results shed new light on these important gating checkpoints and show that the gating mechanism of Orai channels is affected by multiple factors that are not necessarily conserved among orai homologs, such as the TM4-TM3 coupling.
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Affiliation(s)
- Bartłomiej Augustynek
- Membrane Transport Discovery Lab, Department of Nephrology and Hypertension and Department of Biomedical Research, Inselspital, University of Bern, Freiburgstrasse 15, CH-3010 Bern, Switzerland
| | - Gergely Gyimesi
- Membrane Transport Discovery Lab, Department of Nephrology and Hypertension and Department of Biomedical Research, Inselspital, University of Bern, Freiburgstrasse 15, CH-3010 Bern, Switzerland
| | - Jan Dernič
- Membrane Transport Discovery Lab, Department of Nephrology and Hypertension and Department of Biomedical Research, Inselspital, University of Bern, Freiburgstrasse 15, CH-3010 Bern, Switzerland
| | - Matthias Sallinger
- Institute of Biophysics, JKU Life Science Center, Johannes Kepler University Linz, A-4020 Linz, Austria
| | - Giuseppe Albano
- Membrane Transport Discovery Lab, Department of Nephrology and Hypertension and Department of Biomedical Research, Inselspital, University of Bern, Freiburgstrasse 15, CH-3010 Bern, Switzerland
| | - Gabriel J Klesse
- Membrane Transport Discovery Lab, Department of Nephrology and Hypertension and Department of Biomedical Research, Inselspital, University of Bern, Freiburgstrasse 15, CH-3010 Bern, Switzerland
| | - Palanivel Kandasamy
- Membrane Transport Discovery Lab, Department of Nephrology and Hypertension and Department of Biomedical Research, Inselspital, University of Bern, Freiburgstrasse 15, CH-3010 Bern, Switzerland
| | - Herwig Grabmayr
- Institute of Biophysics, JKU Life Science Center, Johannes Kepler University Linz, A-4020 Linz, Austria
| | - Irene Frischauf
- Institute of Biophysics, JKU Life Science Center, Johannes Kepler University Linz, A-4020 Linz, Austria
| | - Daniel G Fuster
- Membrane Transport Discovery Lab, Department of Nephrology and Hypertension and Department of Biomedical Research, Inselspital, University of Bern, Freiburgstrasse 15, CH-3010 Bern, Switzerland
| | - Christine Peinelt
- Institute of Biochemistry and Molecular Medicine, University of Bern, Bühlstrasse 28, 3012 Bern, Switzerland
| | - Matthias A Hediger
- Membrane Transport Discovery Lab, Department of Nephrology and Hypertension and Department of Biomedical Research, Inselspital, University of Bern, Freiburgstrasse 15, CH-3010 Bern, Switzerland.
| | - Rajesh Bhardwaj
- Membrane Transport Discovery Lab, Department of Nephrology and Hypertension and Department of Biomedical Research, Inselspital, University of Bern, Freiburgstrasse 15, CH-3010 Bern, Switzerland; Current address: Signal Transduction Laboratory, National Institute of Environmental Health Sciences, NIH, 111 TW Alexander Drive, NC 27709, USA.
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Sekulic-Jablanovic M, Paproth J, Sgambato C, Albano G, Fuster DG, Bodmer D, Petkovic V. Lack of NHE6 and Inhibition of NKCC1 Associated With Increased Permeability in Blood Labyrinth Barrier-Derived Endothelial Cell Layer. Front Cell Neurosci 2022; 16:862119. [PMID: 35496913 PMCID: PMC9039518 DOI: 10.3389/fncel.2022.862119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 03/17/2022] [Indexed: 12/20/2022] Open
Abstract
Acoustic trauma, autoimmune inner ear disease, and presbycusis feature loss of the integrity of the blood-labyrinth barrier (BLB). Normal BLB function depends on endothelial structural integrity, which is supported and maintained by tight junctions and adherens junctions within the microvascular endothelial layer. When these junctions are disrupted, vascular leakage occurs. Tight junctions and adherens junctions are functionally and structurally linked, but the exact signaling pathways underlying their interaction remain unknown. In addition, solute carriers (SC) are essential for optimal exchange through BLB. Previously, we found that SC family member, the sodium–hydrogen exchanger NHE6, was expressed in all wildtype cochlear tissues, and that Nhe6-knockout mice displayed moderate hearing loss. Moreover, NHE6 depletion affected Trk protein turnover and endosomal signaling. Here, we investigated whether NHE6 might impact BLB integrity. We found that Nhe6-knockout, BLB-derived endothelial cells showed reduced expression of major junctional genes: Tjp1, F11r, Ocln, Cdh5, and Cldn5. Co-culturing BLB-derived endothelial cells with pericytes and/or perivascular resident macrophage-like melanocytes in a transwell system showed that monolayers of Nhe6-knockout BLB-derived cells had lower electrical resistance and higher permeability, compared to wildtype endothelial monolayers. Additionally, another SC, NKCC1, which was previously linked to congenital deafness, was downregulated in our Nhe6-knockout mouse model. Blocking NKCC1 with a NKCC1-specific inhibitor, bumetanide, in wildtype BLB-derived endothelial cells also caused the downregulation of major junctional proteins, particularly Tjp1 and F11r, which encode the zonula occludens and junctional adhesion molecule-1 proteins, respectively. Moreover, bumetanide treatment increased cell permeability. In conclusion, we showed that the lack or inhibition of NHE6 or NKCC1 affected the permeability of endothelial BLB-derived cells. These findings suggested that NHE6 and NKCC1 could serve as potential targets for modifying BLB permeability to facilitate drug delivery across the BLB to the cochlea or to protect the cochlea from ototoxic insults.
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Affiliation(s)
- Marijana Sekulic-Jablanovic
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland
- *Correspondence: Marijana Sekulic-Jablanovic,
| | - Jessica Paproth
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Cinzia Sgambato
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Giuseppe Albano
- Inselspital Bern, Department of Biomedical Research, University of Bern, Bern, Switzerland
| | - Daniel G. Fuster
- Inselspital Bern, Department of Biomedical Research, University of Bern, Bern, Switzerland
| | - Daniel Bodmer
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland
- Clinic for Otolaryngology, Head and Neck Surgery, University Hospital Basel, Basel, Switzerland
| | - Vesna Petkovic
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland
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Schnyder D, Albano G, Kucharczyk P, Dolder S, Siegrist M, Anderegg M, Pathare G, Hofstetter W, Baron R, Fuster DG. Deletion of the sodium/hydrogen exchanger 6 causes low bone volume in adult mice. Bone 2021; 153:116178. [PMID: 34508879 DOI: 10.1016/j.bone.2021.116178] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 09/04/2021] [Accepted: 09/05/2021] [Indexed: 11/18/2022]
Abstract
The sodium/hydrogen exchanger 6 (NHE6) localizes to recycling endosomes, where it mediates endosomal alkalinization through K+/H+ exchange. Mutations in the SLC9A6 gene encoding NHE6 cause severe X-linked mental retardation, epilepsy, autism and corticobasal degeneration in humans. Patients with SLC9A6 mutations exhibit skeletal malformations, and a previous study suggested a key role of NHE6 in osteoblast-mediated mineralization. The goal of this study was to explore the role of NHE6 in bone homeostasis. To this end, we studied the bone phenotype of NHE6 knock-out mice by microcomputed tomography, quantitative histomorphometry and complementary ex vivo and in vitro studies. We detected NHE6 transcript and protein in both differentiated osteoclasts and mineralizing osteoblasts. In vitro studies with osteoclasts and osteoblasts derived from NHE6 knock-out mice demonstrated normal osteoclast differentiation and osteoblast proliferation without an impairment in mineralization capacity. Microcomputed tomography and bone histomorphometry studies showed a significantly reduced bone volume and trabecular number as well as an increased trabecular space at lumbar vertebrae of 6 months old NHE6 knock-out mice. The bone degradation marker c-terminal telopeptides of type I collagen was unaltered in NHE6 knock-out mice. However, we observed a reduction of the bone formation marker procollagen type 1 N-terminal propeptide, and increased circulating sclerostin levels in NHE6 knock-out mice. Subsequent studies revealed a significant upregulation of sclerostin transcript expression in both primary calvarial cultures and femora derived from NHE6 knock-out mice. Thus, loss of NHE6 in mice causes an increase of sclerostin expression associated with reduced bone formation and low bone volume.
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Affiliation(s)
- Daniela Schnyder
- Department of Nephrology and Hypertension, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland; National Centre of Competence in Research (NCCR) TransCure, University of Bern, Bern, Switzerland; Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Giuseppe Albano
- Department of Nephrology and Hypertension, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland; National Centre of Competence in Research (NCCR) TransCure, University of Bern, Bern, Switzerland; Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Patrycja Kucharczyk
- Department of Nephrology and Hypertension, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland; National Centre of Competence in Research (NCCR) TransCure, University of Bern, Bern, Switzerland; Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Silvia Dolder
- National Centre of Competence in Research (NCCR) TransCure, University of Bern, Bern, Switzerland; Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Mark Siegrist
- National Centre of Competence in Research (NCCR) TransCure, University of Bern, Bern, Switzerland; Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Manuel Anderegg
- Department of Nephrology and Hypertension, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland; National Centre of Competence in Research (NCCR) TransCure, University of Bern, Bern, Switzerland; Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Ganesh Pathare
- Department of Nephrology and Hypertension, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland; National Centre of Competence in Research (NCCR) TransCure, University of Bern, Bern, Switzerland; Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Willy Hofstetter
- National Centre of Competence in Research (NCCR) TransCure, University of Bern, Bern, Switzerland; Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
| | - Roland Baron
- Division of Bone and Mineral Research, Harvard Medical School and Harvard School of Dental Medicine, Boston, MA, USA; Department of Oral Medicine, Infection and Immunity, Harvard Medical School and Harvard School of Dental Medicine, Boston, MA, USA
| | - Daniel G Fuster
- Department of Nephrology and Hypertension, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland; National Centre of Competence in Research (NCCR) TransCure, University of Bern, Bern, Switzerland; Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland.
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Giurazza F, Angileri SA, Corvino F, Granata G, Grillo P, Savoldi AP, Albano G, Bracchi L, Carrafiello G, Niola R. Postpartum Hemorrhages: Prevention. Semin Ultrasound CT MR 2021; 42:85-94. [PMID: 33541592 DOI: 10.1053/j.sult.2020.09.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The strict correlation between abnormal invasive placentation and postpartum hemorrhage suggests that a widespread antenatal diagnosis of placental anomalies would improve the management of these challenging patients; acting preventive solutions at the moment of delivery reduces blood loss and avoid hysterectomies. The role of endovascular procedures in this field has been encouraged by multiple studies reporting prophylactic uterine arteries embolization and iliac/aortic balloon catheters positioning. This paper aims to review the main imaging diagnostic findings of placental implant anomalies and summarize the principal preventive endovascular strategies proposed in literature.
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Affiliation(s)
- Francesco Giurazza
- Vascular and Interventional Radiology Department, Cardarelli Hospital, Naples, Italy.
| | | | - Fabio Corvino
- Vascular and Interventional Radiology Department, Cardarelli Hospital, Naples, Italy
| | - Giuseppe Granata
- Postgraduate School in Radiodiagnostic, Facoltà di Medicina e Chirurgia, Università degli Studi di Milano, Milan, Italy
| | - Pasquale Grillo
- Postgraduate School in Radiodiagnostic, Facoltà di Medicina e Chirurgia, Università degli Studi di Milano, Milan, Italy
| | - Anna Paola Savoldi
- Postgraduate School in Radiodiagnostic, Facoltà di Medicina e Chirurgia, Università degli Studi di Milano, Milan, Italy
| | | | - Laura Bracchi
- Diagnostic and Therapeutic Imaging Department, Cerba Healthcare Italia, Milan, Italy
| | | | - Raffaella Niola
- Vascular and Interventional Radiology Department, Cardarelli Hospital, Naples, Italy
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Lago P, Albano G, Toscani M, Albera R, Grugnetti AM, Dell'Olivo B. [COVID-19 emergency management activities promoted by an university hospital in Northern Italy]. G Ital Med Lav Ergon 2020; 42:187-194. [PMID: 33119979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 09/30/2020] [Indexed: 06/11/2023]
Abstract
Background. In December 2019, a Coronavirus 2019 epidemic (COVID-19) was reported, caused by a severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which occurred in the city of Wuhan, Hubei province, China. Perceived risk of contracting diseases has led many Governments and Healthcare Organizations to implement a variety of control and protection measures for the population, in particular for health professionals who have made contact with positive Covid-19 patients. In this publication, we have carried out a review of the information available, in order to share the prevention and protection measures for health and safety at work, which a University Hospital of Pavia, in Northern Italy, has remodulated, according to the changed scenario in which professionals finds themselves carrying out their profession in the post lockdown, in account to the specificity of processes and methods of work organizing, which overall, they serve to characterize risks, in order to be able to prevent them in the best possible way for patients, visitors and healthcare professionals.
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Affiliation(s)
- Paolo Lago
- IRCCS Foundation University Hospital San Matteo of Pavia, Department of Clinical Engineering
| | - Giuseppe Albano
- IRCCS Foundation University Hospital San Matteo of Pavia, Department of Prevention and Protection
| | - Marco Toscani
- IRCCS Foundation University Hospital San Matteo of Pavia, Department of Prevention and Protection
| | - Roberto Albera
- IRCCS Foundation University Hospital San Matteo of Pavia, Department of Prevention and Protection
| | - Anna Maria Grugnetti
- IRCCS Foundation University Hospital San Matteo of Pavia, Department of Health Professions
| | - Bianca Dell'Olivo
- IRCCS Foundation University Hospital San Matteo of Pavia, Department of Prevention and Protection
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Gyimesi G, Albano G, Fuster DG, Hediger MA, Pujol-Giménez J. Correction: Unraveling the structural elements of pH sensitivity and substrate binding in the human zinc transporter SLC39A2 (ZIP2). J Biol Chem 2020; 295:4369. [DOI: 10.1074/jbc.aac120.013245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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10
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Kucharava K, Brand Y, Albano G, Sekulic-Jablanovic M, Glutz A, Xian X, Herz J, Bodmer D, Fuster DG, Petkovic V. Sodium-hydrogen exchanger 6 (NHE6) deficiency leads to hearing loss, via reduced endosomal signalling through the BDNF/Trk pathway. Sci Rep 2020; 10:3609. [PMID: 32107410 PMCID: PMC7046661 DOI: 10.1038/s41598-020-60262-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 02/07/2020] [Indexed: 01/03/2023] Open
Abstract
Acid-base homeostasis is critical for normal growth, development, and hearing function. The sodium-hydrogen exchanger 6 (NHE6), a protein mainly expressed in early and recycling endosomes, plays an important role in regulating organellar pH. Mutations in NHE6 cause complex, slowly progressive neurodegeneration. Little is known about NHE6 function in the mouse cochlea. Here, we found that all NHE isoforms were expressed in wild-type (WT) mouse cochlea. Nhe6 knockout (KO) mice showed significant hearing loss compared to WT littermates. Immunohistochemistry in WT mouse cochlea showed that Nhe6 was localized in the organ of Corti (OC), spiral ganglion (SG), stria vascularis (SV), and afferent nerve fibres. The middle and the inner ears of WT and Nhe6 KO mice were not different morphologically. Given the putative role of NHE6 in early endosomal function, we examined Rab GTPase expression in early and late endosomes. We found no change in Rab5, significantly lower Rab7, and higher Rab11 levels in the Nhe6 KO OC, compared to WT littermates. Because Rabs mediate TrkB endosomal signalling, we evaluated TrkB phosphorylation in the OCs of both strains. Nhe6 KO mice showed significant reductions in TrkB and Akt phosphorylation in the OC. In addition, we examined genes used as markers of SG type I (Slc17a7, Calb1, Pou4f1, Cal2) and type II neurons (Prph, Plk5, Cacna1g). We found that all marker gene expression levels were significantly elevated in the SG of Nhe6 KO mice, compared to WT littermates. Anti-neurofilament factor staining showed axon loss in the cochlear nerves of Nhe6 KO mice compared to WT mice. These findings indicated that BDNF/TrkB signalling was disrupted in the OC of Nhe6 KO mice, probably due to TrkB reduction, caused by over acidification in the absence of NHE6. Thus, our findings demonstrated that NHEs play important roles in normal hearing in the mammalian cochlea.
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Affiliation(s)
- Krystsina Kucharava
- Department of Biomedicine, and Clinic for Otolaryngology, Head and Neck Surgery, Hospital Basel, University of Basel, Basel, 4031, Switzerland
| | - Yves Brand
- Clinic for Otolaryngology, Head and Neck Surgery, Kantonsspital Graubünden, Chur, 7000, Switzerland
| | - Giuseppe Albano
- Department of Nephrology and Hypertension, Inselspital, Bern University Hospital, and NCCR Transcure, University of Bern, Bern, Switzerland
| | - Marijana Sekulic-Jablanovic
- Department of Biomedicine, and Clinic for Otolaryngology, Head and Neck Surgery, Hospital Basel, University of Basel, Basel, 4031, Switzerland
| | - Andrea Glutz
- Department of Biomedicine, and Clinic for Otolaryngology, Head and Neck Surgery, Hospital Basel, University of Basel, Basel, 4031, Switzerland
| | - Xunde Xian
- Center for Translational Neurodegeneration Research, University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA
| | - Joachim Herz
- Center for Translational Neurodegeneration Research, University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA
| | - Daniel Bodmer
- Department of Biomedicine, and Clinic for Otolaryngology, Head and Neck Surgery, Hospital Basel, University of Basel, Basel, 4031, Switzerland
| | - Daniel G Fuster
- Department of Nephrology and Hypertension, Inselspital, Bern University Hospital, and NCCR Transcure, University of Bern, Bern, Switzerland
| | - Vesna Petkovic
- Department of Biomedicine, and Clinic for Otolaryngology, Head and Neck Surgery, Hospital Basel, University of Basel, Basel, 4031, Switzerland.
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Gyimesi G, Albano G, Fuster DG, Hediger MA, Pujol-Giménez J. Unraveling the structural elements of pH sensitivity and substrate binding in the human zinc transporter SLC39A2 (ZIP2). J Biol Chem 2019; 294:8046-8063. [PMID: 30914478 PMCID: PMC6527156 DOI: 10.1074/jbc.ra118.006113] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 03/22/2019] [Indexed: 12/20/2022] Open
Abstract
The transport and ion-coupling mechanisms of ZIP transporters remain largely uncharacterized. Previous work in our laboratory has revealed that the solute carrier family 39 member A2 (SLC39A2/ZIP2) increases its substrate transport rate in the presence of extracellular H+. Here, we used a combination of in silico and in vitro techniques involving structural modeling, mutagenesis, and functional characterization in HEK293 cells to identify amino acid residues potentially relevant for both the ZIP2–H+ interaction and substrate binding. Our ZIP2 models revealed a cluster of charged residues close to the substrate–translocation pore. Interestingly, the H63A substitution completely abrogated pH sensitivity, and substitutions of Glu-67 and Phe-269 altered the pH and voltage modulation of transport. In contrast, substitution of Glu-106, which might be part of a dimerization interface, altered pH but not voltage modulation. Substitution of Phe-269, located close to the substrate-binding site, also affected substrate selectivity. These findings were supported by an additional model of ZIP2 that was based on the structure of a prokaryotic homolog, Bordetella bronchiseptica ZrT/Irt-like protein (bbZIP), and in silico pKa calculations. We also found that residues Glu-179, His-175, His-202, and Glu-276 are directly involved in the coordination of the substrate metal ion. We noted that, unlike bbZIP, human ZIP2 is predicted to harbor a single divalent metal-binding site, with the charged side chain of Lys-203 replacing the second bound ion. Our results provide the first structural evidence for the previously observed pH and voltage modulation of ZIP2-mediated metal transport, identify the substrate-binding site, and suggest a structure-based transport mechanism for the ZIP2 transporter.
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Affiliation(s)
- Gergely Gyimesi
- Institute of Biochemistry and Molecular Medicine, University of Bern, Bühlstrasse 28, 3012 Bern, Switzerland; National Center of Competence in Research, NCCR TransCure, Bühlstrasse 28, 3012 Bern, Switzerland; Department of Nephrology and Hypertension, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse 18, 3010 Bern, Switzerland
| | - Giuseppe Albano
- Institute of Biochemistry and Molecular Medicine, University of Bern, Bühlstrasse 28, 3012 Bern, Switzerland; National Center of Competence in Research, NCCR TransCure, Bühlstrasse 28, 3012 Bern, Switzerland; Department of Nephrology and Hypertension, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse 18, 3010 Bern, Switzerland
| | - Daniel G Fuster
- Institute of Biochemistry and Molecular Medicine, University of Bern, Bühlstrasse 28, 3012 Bern, Switzerland; National Center of Competence in Research, NCCR TransCure, Bühlstrasse 28, 3012 Bern, Switzerland; Department of Nephrology and Hypertension, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse 18, 3010 Bern, Switzerland
| | - Matthias A Hediger
- Institute of Biochemistry and Molecular Medicine, University of Bern, Bühlstrasse 28, 3012 Bern, Switzerland; National Center of Competence in Research, NCCR TransCure, Bühlstrasse 28, 3012 Bern, Switzerland; Department of Nephrology and Hypertension, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse 18, 3010 Bern, Switzerland.
| | - Jonai Pujol-Giménez
- Institute of Biochemistry and Molecular Medicine, University of Bern, Bühlstrasse 28, 3012 Bern, Switzerland; National Center of Competence in Research, NCCR TransCure, Bühlstrasse 28, 3012 Bern, Switzerland; Department of Nephrology and Hypertension, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse 18, 3010 Bern, Switzerland.
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Mancusi C, Losi MA, Izzo R, Canciello G, De Stefano G, Albano G, De Luca N, Trimarco B, De Simone G. 3024Incident Cardiovascular events among hypertensive patients with optimally controlled blood pressure: the Campania Salute Network. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.3024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- C Mancusi
- Federico II University of Naples, Hypertension Research Center, Naples, Italy
| | - M A Losi
- Federico II University of Naples, Hypertension Research Center, Naples, Italy
| | - R Izzo
- Federico II University of Naples, Hypertension Research Center, Naples, Italy
| | - G Canciello
- Federico II University of Naples, Hypertension Research Center, Naples, Italy
| | - G De Stefano
- Federico II University of Naples, Hypertension Research Center, Naples, Italy
| | - G Albano
- Federico II University of Naples, Hypertension Research Center, Naples, Italy
| | - N De Luca
- Federico II University of Naples, Hypertension Research Center, Naples, Italy
| | - B Trimarco
- Federico II University of Naples, Hypertension Research Center, Naples, Italy
| | - G De Simone
- Federico II University of Naples, Hypertension Research Center, Naples, Italy
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Colussi G, Moro V, Gallas G, Comuzzi L, Zuliani M, Umari M, Mariconda G, Parrinello M, Albano G, Lucangelo U. Erector spinae plane block for multimodal analgesia in thoracic surgery: a two-center case series. J Cardiothorac Vasc Anesth 2018. [DOI: 10.1053/j.jvca.2018.08.147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Albano G, Dolder S, Siegrist M, Mercier-Zuber A, Auberson M, Stoudmann C, Hofstetter W, Bonny O, Fuster DG. Increased bone resorption by osteoclast-specific deletion of the sodium/calcium exchanger isoform 1 (NCX1). Pflugers Arch 2016; 469:225-233. [PMID: 27942992 DOI: 10.1007/s00424-016-1923-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 11/22/2016] [Accepted: 11/29/2016] [Indexed: 11/30/2022]
Abstract
Calcium is a key component of the bone mineral hydroxyapatite. During osteoclast-mediated bone resorption, hydroxyapatite is dissolved and significant quantities of calcium are released. Several calcium transport systems have previously been identified in osteoclasts, including members of the sodium/calcium exchanger (NCX) family. Expression pattern and physiological role of NCX isoforms in osteoclasts, however, remain largely unknown at the moment. Our data indicate that all three NCX isoforms (NCX1, NCX2, and NCX3) are present in murine osteoclasts. RANKL-induced differentiation of murine osteoclast precursors into mature osteoclasts significantly attenuated the expression of NCX1, while NCX2 and NCX3 expressions were largely unaffected. To study the role of NCX1 during osteoclast differentiation and bone resorption, we crossed mice with exon 11 of the NCX1 gene flanked by loxP sites with cathepsin K-Cre transgenic mice. Mature osteoclasts derived from transgenic mice exhibited an 80-90% reduction of NCX1 protein. In vitro studies indicate that NCX1 is dispensable for osteoclast differentiation, but NCX1-deficient osteoclasts exhibited increased resorptive activity. In line with these in vitro findings, mice with an osteoclast-targeted deletion of the NCX1 gene locus displayed an age-dependent loss of bone mass. Thus, in summary, our data reveal NCX1 as a regulator of osteoclast-mediated bone resorption.
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Affiliation(s)
- Giuseppe Albano
- Division of Nephrology, Hypertension and Clinical Pharmacology, Bern University Hospital, University of Bern, Freiburgstrasse 15, 3010, Bern, Switzerland
- Institute of Biochemistry and Molecular Medicine, University of Bern, Bern, Switzerland
- NCCR Transcure, University of Bern, Bern, Switzerland
- Department of Clinical Research, University of Bern, Bern, Switzerland
- NCCR Kidney.CH, University of Zürich, Zürich, Switzerland
| | - Silvia Dolder
- NCCR Transcure, University of Bern, Bern, Switzerland
- Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Mark Siegrist
- NCCR Transcure, University of Bern, Bern, Switzerland
- Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Annie Mercier-Zuber
- Department of Pharmacology and Toxicology, University of Lausanne, Lausanne, Switzerland
- NCCR Kidney.CH, University of Zürich, Zürich, Switzerland
| | - Muriel Auberson
- Department of Pharmacology and Toxicology, University of Lausanne, Lausanne, Switzerland
- NCCR Kidney.CH, University of Zürich, Zürich, Switzerland
| | - Candice Stoudmann
- Department of Pharmacology and Toxicology, University of Lausanne, Lausanne, Switzerland
- NCCR Kidney.CH, University of Zürich, Zürich, Switzerland
| | - Willy Hofstetter
- NCCR Transcure, University of Bern, Bern, Switzerland
- Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Olivier Bonny
- Department of Pharmacology and Toxicology, University of Lausanne, Lausanne, Switzerland
- NCCR Kidney.CH, University of Zürich, Zürich, Switzerland
| | - Daniel G Fuster
- Division of Nephrology, Hypertension and Clinical Pharmacology, Bern University Hospital, University of Bern, Freiburgstrasse 15, 3010, Bern, Switzerland.
- Institute of Biochemistry and Molecular Medicine, University of Bern, Bern, Switzerland.
- NCCR Transcure, University of Bern, Bern, Switzerland.
- Department of Clinical Research, University of Bern, Bern, Switzerland.
- NCCR Kidney.CH, University of Zürich, Zürich, Switzerland.
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15
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Deisl C, Anderegg M, Albano G, Lüscher BP, Cerny D, Soria R, Bouillet E, Rimoldi S, Scherrer U, Fuster DG. Loss of Sodium/Hydrogen Exchanger NHA2 Exacerbates Obesity- and Aging-Induced Glucose Intolerance in Mice. PLoS One 2016; 11:e0163568. [PMID: 27685945 PMCID: PMC5042380 DOI: 10.1371/journal.pone.0163568] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 09/11/2016] [Indexed: 11/21/2022] Open
Abstract
We previously demonstrated that the sodium/hydrogen exchanger NHA2, also known as NHEDC2 or SLC9B2, is critical for insulin secretion by β–cells. To gain more insights into the role of NHA2 on systemic glucose homeostasis, we studied the impact of loss of NHA2 during the physiological aging process and in the setting of diet-induced obesity. While glucose tolerance was normal at 2 months of age, NHA2 KO mice displayed a significant glucose intolerance at 5 and 12 months of age, respectively. An obesogenic high fat diet further exacerbated the glucose intolerance of NHA2 KO mice. Insulin levels remained similar in NHA2 KO and WT mice during aging and high fat diet, but fasting insulin/glucose ratios were significantly lower in NHA2 KO mice. Peripheral insulin sensitivity, measured by insulin tolerance tests and hyperinsulinemic euglycemic clamps, was unaffected by loss of NHA2 during aging and high fat diet. High fat diet diminished insulin secretion capacity in both WT and NHA2 KO islets and reduced expression of NHA2 in WT islets. In contrast, aging was characterized by a gradual increase of NHA2 expression in islets, paralleled by an increasing difference in insulin secretion between WT and NHA2 KO islets. In summary, our results demonstrate that loss of the sodium/hydrogen exchanger NHA2 exacerbates obesity- and aging-induced glucose intolerance in mice. Furthermore, our data reveal a close link between NHA2 expression and insulin secretion capacity in islets.
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Affiliation(s)
- Christine Deisl
- Division of Nephrology, Hypertension and Clinical Pharmacology, Bern University Hospital, University of Bern, Bern, Switzerland
- Institute of Biochemistry and Molecular Medicine and Swiss National Centre of Competence in Research (NCCR) TransCure, University of Bern, Bern, Switzerland
- Department of Clinical Research, Bern University Hospital, University of Bern, Bern Switzerland
| | - Manuel Anderegg
- Division of Nephrology, Hypertension and Clinical Pharmacology, Bern University Hospital, University of Bern, Bern, Switzerland
- Institute of Biochemistry and Molecular Medicine and Swiss National Centre of Competence in Research (NCCR) TransCure, University of Bern, Bern, Switzerland
- Department of Clinical Research, Bern University Hospital, University of Bern, Bern Switzerland
| | - Giuseppe Albano
- Division of Nephrology, Hypertension and Clinical Pharmacology, Bern University Hospital, University of Bern, Bern, Switzerland
- Institute of Biochemistry and Molecular Medicine and Swiss National Centre of Competence in Research (NCCR) TransCure, University of Bern, Bern, Switzerland
- Department of Clinical Research, Bern University Hospital, University of Bern, Bern Switzerland
| | - Benjamin P. Lüscher
- Institute of Biochemistry and Molecular Medicine and Swiss National Centre of Competence in Research (NCCR) TransCure, University of Bern, Bern, Switzerland
- Department of Clinical Research, Bern University Hospital, University of Bern, Bern Switzerland
| | - David Cerny
- Department of Clinical Research, Bern University Hospital, University of Bern, Bern Switzerland
- Division of Cardiology, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Rodrigo Soria
- Department of Clinical Research, Bern University Hospital, University of Bern, Bern Switzerland
- Division of Cardiology, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Elisa Bouillet
- Department of Clinical Research, Bern University Hospital, University of Bern, Bern Switzerland
- Division of Cardiology, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Stefano Rimoldi
- Department of Clinical Research, Bern University Hospital, University of Bern, Bern Switzerland
- Division of Cardiology, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Urs Scherrer
- Department of Clinical Research, Bern University Hospital, University of Bern, Bern Switzerland
- Division of Cardiology, Bern University Hospital, University of Bern, Bern, Switzerland
- Facultad de Ciencias, Departamento de Biologia, Universidad de Tarapaca, Arica, Chile
| | - Daniel G. Fuster
- Division of Nephrology, Hypertension and Clinical Pharmacology, Bern University Hospital, University of Bern, Bern, Switzerland
- Institute of Biochemistry and Molecular Medicine and Swiss National Centre of Competence in Research (NCCR) TransCure, University of Bern, Bern, Switzerland
- Department of Clinical Research, Bern University Hospital, University of Bern, Bern Switzerland
- * E-mail:
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Giurazza F, Niola R, Albano G, Nazzaro G, Silvestre M, Sirimarco F, Maglione F. Reply to: "Endovascular Management of Abnormal Placental Implantation Deliveries: Expanding IR Boundaries". J Vasc Interv Radiol 2016; 27:1103-4. [PMID: 27338507 DOI: 10.1016/j.jvir.2016.04.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 04/15/2016] [Accepted: 04/18/2016] [Indexed: 11/26/2022] Open
Affiliation(s)
- Francesco Giurazza
- Department of Radiology, Università Campus Bio-Medico di Roma, Via Alvaro Del Portillo 200, Rome 00198, Italy; Department of Interventional Radiology, Naples, Italy; Department of Radiology, Università degli Studi di Napoli Federico II, Naples, Italy
| | | | - Giuseppe Albano
- Department of Gynecology, A.O.R.N. Antonio Cardarelli, Naples, Italy
| | - Giuseppe Nazzaro
- Department of Gynecology, A.O.R.N. Antonio Cardarelli, Naples, Italy
| | | | - Fabio Sirimarco
- Department of Gynecology, A.O.R.N. Antonio Cardarelli, Naples, Italy
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Niola R, Giurazza F, Nazzaro G, Silvestre M, Nasti G, Di Pasquale MA, Albano G, Valentino L, Sirimarco F, Maglione F. Uterine Artery Embolization before Delivery to Prevent Postpartum Hemorrhage. J Vasc Interv Radiol 2016; 27:376-82. [PMID: 26806693 DOI: 10.1016/j.jvir.2015.12.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Revised: 12/01/2015] [Accepted: 12/07/2015] [Indexed: 11/26/2022] Open
Abstract
PURPOSE To assess the safety and outcomes of uterine artery embolization (UAE) performed before delivery in patients with placental implant anomalies at high risk for peripartum or postpartum hemorrhage. MATERIALS AND METHODS From January 2013 to January 2015, 50 consecutive patients with placental implant anomalies at 35-36 weeks of pregnancy were recruited. UAE was performed superselectively by injecting reabsorbable pledgets. We applied 5 dosimeters to patients' backs to measure the uterine radiation dose, considered to be the same radiation dose that the fetus received. Newborns were assessed immediately after birth and at 6-month follow-up. RESULTS All procedures were technically successful. Of patients, 64% did not require transfusions. Mean blood units transfused was 0.7 U (range, 0-4 U). No patient was transferred to the intensive care unit. Hysterectomy was performed in 13 patients (26%). Mean fluoroscopy operative time was 3 minutes 42 seconds (range, 1 min 21 s-6 min 58 s), and mean uterine radiation dose was 15.61 mGy (range, 8.15-38.18 mGy). Mean time between embolization and delivery was 6 minutes 4 seconds (range, 4 min 18 s-8 min 12 s). The 1-minute and 5-minute Apgar scores were 8-9 in all newborns; 8 newborns were lost to follow-up at 6 months. A normal cognitive outcome was evident in all 42 children studied. CONCLUSIONS UAE before delivery appeared to reduce bleeding during cesarean sections in this consecutive series of patients with placental implant anomalies. In the hands of experienced staff, radiation dose to the fetus was minimal.
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Affiliation(s)
- Raffaella Niola
- Interventional Radiology Department, Gynecology Department, Physics Department, and Neonatology Department, A.O.R.N. Antonio Cardarelli, Naples, Italy
| | - Francesco Giurazza
- Interventional Radiology Department, Gynecology Department, Physics Department, and Neonatology Department, A.O.R.N. Antonio Cardarelli, Naples, Italy; Radiology Department, Università Campus Bio-Medico di Roma, Via Alvaro Del Portillo 200, Rome 00198, Italy.
| | - Giuseppe Nazzaro
- Interventional Radiology Department, Gynecology Department, Physics Department, and Neonatology Department, A.O.R.N. Antonio Cardarelli, Naples, Italy
| | - Mattia Silvestre
- Interventional Radiology Department, Gynecology Department, Physics Department, and Neonatology Department, A.O.R.N. Antonio Cardarelli, Naples, Italy; Radiology Department, Università degli Studi di Napoli Federico II, Naples, Italy
| | - Gennaro Nasti
- Interventional Radiology Department, Gynecology Department, Physics Department, and Neonatology Department, A.O.R.N. Antonio Cardarelli, Naples, Italy
| | - Maria Antonella Di Pasquale
- Interventional Radiology Department, Gynecology Department, Physics Department, and Neonatology Department, A.O.R.N. Antonio Cardarelli, Naples, Italy
| | - Giuseppe Albano
- Interventional Radiology Department, Gynecology Department, Physics Department, and Neonatology Department, A.O.R.N. Antonio Cardarelli, Naples, Italy
| | - Liliana Valentino
- Interventional Radiology Department, Gynecology Department, Physics Department, and Neonatology Department, A.O.R.N. Antonio Cardarelli, Naples, Italy
| | - Fabio Sirimarco
- Interventional Radiology Department, Gynecology Department, Physics Department, and Neonatology Department, A.O.R.N. Antonio Cardarelli, Naples, Italy
| | - Franco Maglione
- Interventional Radiology Department, Gynecology Department, Physics Department, and Neonatology Department, A.O.R.N. Antonio Cardarelli, Naples, Italy
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Bersani G, Bersani FS, Caroti E, Russo P, Albano G, Valeriani G, Imperatori C, Minichino A, Manuali G, Corazza O. Negative symptoms as key features of depression among cannabis users: a preliminary report. Eur Rev Med Pharmacol Sci 2016; 20:547-552. [PMID: 26914132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE Cannabis use is frequent among depressed patients and may lead to the so-called "amotivational syndrome", which combines symptoms of affective flattening and loss of emotional reactivity (i.e. the so-called "negative" symptomatology). The aim of this study was to investigate the negative symptomatology in depressed patients with concomitant cannabis use disorders (CUDs) in comparison with depressed patients without CUDs. PATIENTS AND METHODS Fifty-one patients with a diagnosis of Major Depressive Disorder (MDD) and concomitant CUD and fifty-one MDD patients were enrolled in the study. The 21-Item Hamilton Depression Rating Scale (HDRS) and the negative symptoms subscales of the Positive and Negative Syndrome Scale (PANSS) were used to assess depressive and negative symptomatology. RESULTS Patients with cannabis use disorders presented significantly more severe negative symptoms in comparison with patients without cannabis use (15.18 ± 2.25 vs 13.75 ± 2.44; t100 = 3.25 p = 0.002). DISCUSSION A deeper knowledge of the "negative" psychopathological profile of MDD patients who use cannabis may lead to novel etiopathogenetic models of MDD and to more appropriate treatment approaches.
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Affiliation(s)
- G Bersani
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Rome, Italy.
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Dhayat NA, Schaller A, Albano G, Poindexter J, Griffith C, Pasch A, Gallati S, Vogt B, Moe OW, Fuster DG. The Vacuolar H+-ATPase B1 Subunit Polymorphism p.E161K Associates with Impaired Urinary Acidification in Recurrent Stone Formers. J Am Soc Nephrol 2015; 27:1544-54. [PMID: 26453614 DOI: 10.1681/asn.2015040367] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 09/02/2015] [Indexed: 11/03/2022] Open
Abstract
Mutations in the vacuolar-type H(+)-ATPase B1 subunit gene ATP6V1B1 cause autosomal-recessive distal renal tubular acidosis (dRTA). We previously identified a single-nucleotide polymorphism (SNP) in the human B1 subunit (c.481G>A; p.E161K) that causes greatly diminished pump function in vitro To investigate the effect of this SNP on urinary acidification, we conducted a genotype-phenotype analysis of recurrent stone formers in the Dallas and Bern kidney stone registries. Of 555 patients examined, 32 (5.8%) were heterozygous for the p.E161K SNP, and the remaining 523 (94.2%) carried two wild-type alleles. After adjustment for sex, age, body mass index, and dietary acid and alkali intake, p.E161K SNP carriers had a nonsignificant tendency to higher urinary pH on a random diet (6.31 versus 6.09; P=0.09). Under an instructed low-Ca and low-Na diet, urinary pH was higher in p.E161K SNP carriers (6.56 versus 6.01; P<0.01). Kidney stones of p.E161K carriers were more likely to contain calcium phosphate than stones of wild-type patients. In acute NH4Cl loading, p.E161K carriers displayed a higher trough urinary pH (5.34 versus 4.89; P=0.01) than wild-type patients. Overall, 14.6% of wild-type patients and 52.4% of p.E161K carriers were unable to acidify their urine below pH 5.3 and thus, can be considered to have incomplete dRTA. In summary, our data indicate that recurrent stone formers with the vacuolar H(+)-ATPase B1 subunit p.E161K SNP exhibit a urinary acidification deficit with an increased prevalence of calcium phosphate-containing kidney stones. The burden of E161K heterozygosity may be a forme fruste of dRTA.
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Affiliation(s)
- Nasser A Dhayat
- Swiss National Centres of Competence in Research Kidney.CH and TransCure and Divisions of Nephrology, Hypertension and Clinical Pharmacology, Clinical Research, Bern University Hospital, University of Bern, Switzerland; and
| | - Andre Schaller
- Clinical Research, Bern University Hospital, University of Bern, Switzerland; and Human Genetics, and Departments of Pediatrics and
| | - Giuseppe Albano
- Swiss National Centres of Competence in Research Kidney.CH and TransCure and Divisions of Nephrology, Hypertension and Clinical Pharmacology, Clinical Research, Bern University Hospital, University of Bern, Switzerland; and Institute of Biochemistry and Molecular Medicine, University of Bern, Bern, Switzerland
| | - John Poindexter
- Charles and Jane Pak Center of Mineral Metabolism and Clinical Research, and
| | - Carolyn Griffith
- Charles and Jane Pak Center of Mineral Metabolism and Clinical Research, and
| | - Andreas Pasch
- Swiss National Centres of Competence in Research Kidney.CH and TransCure and Divisions of Nephrology, Hypertension and Clinical Pharmacology, Clinical Research, Bern University Hospital, University of Bern, Switzerland; and
| | - Sabina Gallati
- Clinical Research, Bern University Hospital, University of Bern, Switzerland; and Human Genetics, and Departments of Pediatrics and
| | - Bruno Vogt
- Swiss National Centres of Competence in Research Kidney.CH and TransCure and Divisions of Nephrology, Hypertension and Clinical Pharmacology, Clinical Research, Bern University Hospital, University of Bern, Switzerland; and
| | - Orson W Moe
- Charles and Jane Pak Center of Mineral Metabolism and Clinical Research, and Departments of Internal Medicine and Physiology, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Daniel G Fuster
- Swiss National Centres of Competence in Research Kidney.CH and TransCure and Divisions of Nephrology, Hypertension and Clinical Pharmacology, Clinical Research, Bern University Hospital, University of Bern, Switzerland; and Institute of Biochemistry and Molecular Medicine, University of Bern, Bern, Switzerland;
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Dhayat N, Simonin A, Anderegg M, Pathare G, Lüscher BP, Deisl C, Albano G, Mordasini D, Hediger MA, Surbek DV, Vogt B, Sass JO, Kloeckener-Gruissem B, Fuster DG. Mutation in the Monocarboxylate Transporter 12 Gene Affects Guanidinoacetate Excretion but Does Not Cause Glucosuria. J Am Soc Nephrol 2015; 27:1426-36. [PMID: 26376857 DOI: 10.1681/asn.2015040411] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 08/05/2015] [Indexed: 01/08/2023] Open
Abstract
A heterozygous mutation (c.643C>A; p.Q215X) in the monocarboxylate transporter 12-encoding gene MCT12 (also known as SLC16A12) that mediates creatine transport was recently identified as the cause of a syndrome with juvenile cataracts, microcornea, and glucosuria in a single family. Whereas the MCT12 mutation cosegregated with the eye phenotype, poor correlation with the glucosuria phenotype did not support a pathogenic role of the mutation in the kidney. Here, we examined MCT12 in the kidney and found that it resides on basolateral membranes of proximal tubules. Patients with MCT12 mutation exhibited reduced plasma levels and increased fractional excretion of guanidinoacetate, but normal creatine levels, suggesting that MCT12 may function as a guanidinoacetate transporter in vivo However, functional studies in Xenopus oocytes revealed that MCT12 transports creatine but not its precursor, guanidinoacetate. Genetic analysis revealed a separate, undescribed heterozygous mutation (c.265G>A; p.A89T) in the sodium/glucose cotransporter 2-encoding gene SGLT2 (also known as SLC5A2) in the family that segregated with the renal glucosuria phenotype. When overexpressed in HEK293 cells, the mutant SGLT2 transporter did not efficiently translocate to the plasma membrane, and displayed greatly reduced transport activity. In summary, our data indicate that MCT12 functions as a basolateral exit pathway for creatine in the proximal tubule. Heterozygous mutation of MCT12 affects systemic levels and renal handling of guanidinoacetate, possibly through an indirect mechanism. Furthermore, our data reveal a digenic syndrome in the index family, with simultaneous MCT12 and SGLT2 mutation. Thus, glucosuria is not part of the MCT12 mutation syndrome.
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Affiliation(s)
- Nasser Dhayat
- Division of Nephrology, Hypertension and Clinical Pharmacology, and Department of Clinical Research, University of Bern, Switzerland
| | - Alexandre Simonin
- Institute of Biochemistry and Molecular Medicine, Swiss National Centre of Competence in Research Transcure, and
| | - Manuel Anderegg
- Division of Nephrology, Hypertension and Clinical Pharmacology, and Department of Clinical Research, University of Bern, Switzerland; Institute of Biochemistry and Molecular Medicine, Swiss National Centre of Competence in Research Transcure, and
| | - Ganesh Pathare
- Division of Nephrology, Hypertension and Clinical Pharmacology, and Department of Clinical Research, University of Bern, Switzerland; Institute of Biochemistry and Molecular Medicine, Swiss National Centre of Competence in Research Transcure, and
| | - Benjamin P Lüscher
- Department of Clinical Research, University of Bern, Switzerland; Swiss National Centre of Competence in Research Transcure, and Department of Obstetrics and Gynecology, University Hospital of Bern, Switzerland
| | - Christine Deisl
- Division of Nephrology, Hypertension and Clinical Pharmacology, and Department of Clinical Research, University of Bern, Switzerland; Institute of Biochemistry and Molecular Medicine, Swiss National Centre of Competence in Research Transcure, and
| | - Giuseppe Albano
- Division of Nephrology, Hypertension and Clinical Pharmacology, and Department of Clinical Research, University of Bern, Switzerland; Institute of Biochemistry and Molecular Medicine, Swiss National Centre of Competence in Research Transcure, and
| | - David Mordasini
- Division of Nephrology, Hypertension and Clinical Pharmacology, and Department of Clinical Research, University of Bern, Switzerland
| | - Matthias A Hediger
- Institute of Biochemistry and Molecular Medicine, Swiss National Centre of Competence in Research Transcure, and Department of Obstetrics and Gynecology, University Hospital of Bern, Switzerland
| | - Daniel V Surbek
- Department of Clinical Research, University of Bern, Switzerland; Swiss National Centre of Competence in Research Transcure, and Department of Obstetrics and Gynecology, University Hospital of Bern, Switzerland
| | - Bruno Vogt
- Division of Nephrology, Hypertension and Clinical Pharmacology, and Department of Clinical Research, University of Bern, Switzerland
| | - Jörn Oliver Sass
- Division of Clinical Chemistry and Biochemistry, Children's Research Center, University Children's Hospital, Zürich, Switzerland; Department of Natural Sciences, Bonn-Rhein-Sieg University of Applied Sciences, Rheinbach, Germany
| | - Barbara Kloeckener-Gruissem
- Institute of Medical Molecular Genetics, University of Zürich, Zürich, Switzerland; and Department of Biology, Swiss Federal Institute of Technology in Zürich, Zürich, Switzerland
| | - Daniel G Fuster
- Division of Nephrology, Hypertension and Clinical Pharmacology, and Department of Clinical Research, University of Bern, Switzerland; Institute of Biochemistry and Molecular Medicine, Swiss National Centre of Competence in Research Transcure, and
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Bersani FS, Corazza O, Albano G, Bruschi S, Minichino A, Vicinanza R, Bersani G, Martinotti G, Schifano F. The "Eyeballing" technique: an emerging and alerting trend of alcohol misuse. Eur Rev Med Pharmacol Sci 2015; 19:2311-2317. [PMID: 26166661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE Alternative methods of alcohol consumption have recently emerged among adolescents and young adults, including the alcohol "eyeballing", which consist in the direct pouring of alcoholic substances on the ocular surface epithelium. In a context of drug and behavioural addictions change, "eyeballing" can be seen as one of the latest and potentially highly risky new trends. We aimed to analyze the existing medical literature as well as online material on this emerging trend of alcohol misuse. MATERIALS AND METHODS Literature on alcohol eyeballing was searched in PsychInfo and Pubmed databases. Results were integrated with a multilingual qualitative assessment of the database provided by The Global Public Health Intelligence Network (GPHIN) and of a range of websites, drug fora and other online resources between March 2013 and July 2013. RESULTS Alcohol eyeballing is common among adolescents and young adults; substances with high alcohol content, typically vodka, are used for this practice across the EU and internationally. The need for a rapid/intense effect of alcohol, competitiveness, novelty seeking and avoidance of "alcoholic fetor" are the most frequently reported motivations of "eyeballers". Local effects of alcohol eyeballing include pain, burning, blurred vision, conjunctive injection, corneal ulcers or scarring, permanent vision damage and eventually blindness. CONCLUSIONS Alcohol eyeballing represents a phenomenon with potential permanent adverse consequences, deserving the attention of families and healthcare providers. Health and other professionals should be informed about this alerting trend of misuse. Larger observational studies are warranted to estimate the prevalence, characterize the effects, and identify adequate forms of interventions for this emerging phenomenon.
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Affiliation(s)
- F S Bersani
- Department of Neurology and Psychiatry, Sapienza University of Rome, Rome, Italy.
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Niola R, Cavaliere C, Marcello L, Maglione F, de Ritis R, Di Pietto F, Albano G, Nazzaro G, Sirimarco F, Mocerino C, Loreto M, Di Pasquale MA, Nasti G. Role of interventional radiology in treating obstetric haemorrhages. Radiol Med 2014; 119:607-15. [PMID: 24408047 DOI: 10.1007/s11547-013-0380-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2012] [Accepted: 05/13/2013] [Indexed: 12/22/2022]
Abstract
PURPOSE The aim of this study was to evaluate the efficacy and the safety of selective uterine artery embolisation in patients with a high risk of haemorrhage due to obstetric issues. MATERIALS AND METHODS We retrospectively reviewed the angiographic examinations of 63 patients (average age ± SD, 32.6 years ± 4.8), affected by an obstetric disease with a high risk of haemorrhage (22 cases of ectopic pregnancy, 41 of postpartum haemorrhage) and treated with an interventional approach. In particular, we considered the rate of second treatment with interventional technique or conservative or radical surgery, the incidence of postprocedural complications, and the absorbed radiation dose. RESULTS Immediate technical success, defined as the cessation of active bleeding, was achieved in all cases. Uterine artery embolisation was able alone to control the haemorrhage in 95.24 % of cases. Three patients required a second treatment to achieve haemostasis. No peri- or postprocedural complications were observed. At the 12-month follow-up after embolisation, 22/49 conservatively treated patients were found to be pregnant and successfully completed their pregnancy. CONCLUSIONS Selective uterine artery embolisation allows for safe and complete control of haemorrhage in patients with obstetric disease, with a very low incidence of complications and preservation of fertility.
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Affiliation(s)
- Raffaella Niola
- UOSC di Radiologia Vascolare ed Interventistica AORN Cardarelli Napoli, Naples, Italy
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Di Lieto A, Campanile M, Paladini D, Albano G, Paladini A. Atrial Natriuretic Peptide and the Renin Angiotensin Aldosterone System in Normontensive and Hypertensive Pregnancy. ACTA ACUST UNITED AC 2009. [DOI: 10.3109/10641958809023505] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Camporese A, Albano G, Bruschetta G, Diamante P, Gobbo M, Romeo A, Tizianel G. ISOLAMENTO DI STREPTOCOCCUS PNEUMONIAE E RELATIVI FENOTIPI DI RESISTENZA IN BAMBINI SANI SOTTOPOSTI A VACCINAZIONE CON VACCINO CONIUGATO EPTAVALENTE. Microbiol Med 2004. [DOI: 10.4081/mm.2004.3806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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26
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Albano G, Belser P, Daul C. Pi* level tuning in a series of diimine ligands based on density functional theory: application to photonic devices. Inorg Chem 2001; 40:1408-13. [PMID: 11261944 DOI: 10.1021/ic000694c] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Energy- and electron-transfer processes are very important for artificial photosynthesis and a variety of other applications. [(bpy)2Ru(PAP)Os(bpy)2]4+ and its oxidized form [(bpy)2Ru(PAP)Os(bpy)2]5+ perform efficient photoinduced energy- and electron-transfer processes, respectively (k(en) = 5.2 x 10(7) s(-1), k(el) = 7.2 x 10(6) s(-1)). The introduction of appropriate donor and acceptor units on the Ru2+ center can improve the lifetime of the excited state, resulting in a much longer and efficient storage of energy. Nonempirical (density functional) calculations and experimental data are used to predict the best donor and acceptor ligands for improving electron- and energy-transfer processes. Such a result can be extended to all polynuclear complexes where electronic coupling between the metal centers is very weak.
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Affiliation(s)
- G Albano
- Institute of Inorganic Chemistry, University of Fribourg, CH-1700 Fribourg, Switzerland
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Abstract
The authors report a moderately premature baby with Down's syndrome and hydrops, the latter probably caused by a large hepatic haemangioma which was diagnosed only after birth. At birth the baby was affected by massive right hydrothorax, ascites, hypoalbuminaemia and severe respiratory distress. With the use of modern neonatal intensive care, the baby survived. Corticosteroid treatment (prednisolone 2 mg kg(-1) d(-1) i.v. in divided doses) was associated with a very rapid resolution of the haemangioma and the baby was healthy at follow-up. Although hepatic angiomas are not uncommon in the neonatal period, the association with hydrops is a rare finding.
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Affiliation(s)
- G Albano
- Clinical High Risk Pregnancy, Azienda Ospedaliera di Rilievo Nazionale A. Cardarelli, Naples, Italy
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29
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Barbera M, Panarisi S, Paola Q, Cammarata C, Solazzo G, Curto G, Albano G. Urothelioma of the upper urinary tract: Case description and literature review. Urologia 1997. [DOI: 10.1177/039156039706400412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
– Transitional cell carcinoma of the upper urinary tract is relatively uncommon and the fewer the symptoms the more difficult the diagnosis. Choice of therapeutic approach is also difficult because the exams do not always enable the disease to be accurately staged and being a fundamental organ the use of conservative or radical surgery is controversial. The authors report the case of an 80-year-old man with a urothelioma in hydrocalyx of the left kidney due to lithiasis of the collar of the upper calyceal groups. The case was unusual for the concomitance of lithiasis with consequent urostasis and chronic inflammation of the sequestered calyces and the onset of neoplasia in the same. The diagnostic routine was arduous and only the CT scan removed the doubts raised by previous exams. Although precise data regarding the stage could not be obtained, radical surgery was performed. The subsequent histological exam proved the authors’ choice of procedure correct since the neoplasm was infiltrating.
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Affiliation(s)
- M. Barbera
- Divisione Urologica - Azienda Ospedaliera “Ospedali Civili Riuniti” - Sciacca (Agrigento)
| | - S. Panarisi
- Divisione Urologica - Azienda Ospedaliera “Ospedali Civili Riuniti” - Sciacca (Agrigento)
| | - Q. Paola
- Divisione Urologica - Azienda Ospedaliera “Ospedali Civili Riuniti” - Sciacca (Agrigento)
| | - C. Cammarata
- Divisione Urologica - Azienda Ospedaliera “Ospedali Civili Riuniti” - Sciacca (Agrigento)
| | - G. Solazzo
- Divisione Urologica - Azienda Ospedaliera “Ospedali Civili Riuniti” - Sciacca (Agrigento)
| | - G. Curto
- Divisione Urologica - Azienda Ospedaliera “Ospedali Civili Riuniti” - Sciacca (Agrigento)
| | - G. Albano
- Il Cattedra di Radiologia - Policlinico Universitario - Palermo
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Di Lieto A, De Rosa G, Albano G, Staibano S, Campanile M, Pontillo M, Gallo F, Micalef R, Paladini A. Influence of goserelin depot therapy on epidermal growth factor receptor expression in pelvic endometriosis. Gynecol Endocrinol 1997; 11:17-20. [PMID: 9086334 DOI: 10.3109/09513599709152311] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
We have studied epidermal growth factor (EGF) receptor expression in endometrium and in endometriotic implants, testing a group of 36 women before and after a 4-month gonadotropin-releasing hormone (GnRH) analog (GnRH-a) goserelin depot treatment. Each woman underwent laparoscopy twice. At the initial laparoscopy, before starting treatment, the disease was staged according to the American Fertility Society (AFS) classification and biopsies of endometriotic implants were undertaken. The follow-up laparoscopy was performed within 5 weeks of the last GnRH-a administration. Biopsies were taken from areas of previously noted disease, both visually persistent and visually free of disease. At the time of each laparoscopy, photographs of all areas of disease were taken. Specimens of eutopic endometrium were collected from each patient at the time of laparoscopy by a Novak curette. Endometrial and endometriotic samples were processed for immunohistochemical detection of EGF receptor, using anti-EGF receptor monoclonal antibody Ab-3. After treatment, the marked improvement of AFS score was associated with a dramatic reduction of EGF receptor immunostaining, but the exact meaning of this finding is still not completely understood. The dramatic reduction of EGF receptor expression in eutopic and ectopic endometrium samples after treatment is not obviously related to the hypoestrogenism induced by the drug. It has been suggested that steroid hormones and EGF play a role in regulation of EGF receptor expression, so that drugs such as goserelin depot could act directly at local peripheral level influencing the EGF receptor expression via the production of its ligand.
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Affiliation(s)
- A Di Lieto
- Department of Gynecology, Obstetrics and Physiopathology of Human Reproduction, University Federico II Medical School, Naples, Italy
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Di Lieto A, Albano G, Cimmino E, Pontillo M, Gallo F, Micalef R, Paladini A. [Retrospective study of postoperative infectious morbidity following cesarean section]. Minerva Ginecol 1996; 48:85-92. [PMID: 8684692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The increase of cesarean sections produced more postoperative infections. Several authors assessed the effectiveness of chemioantibiotic prophylaxis to reduce the postoperative infective morbidity. Although the family of antibiotics more frequently used is that of cephalosporin, the best single agent has not been found yet. The aim of our study, made in the Department of Obstetrics and Gynecology of University of Naples "Federico II", is to propose a retrospective analysis concerning the incidence of cesarean section (CS), the postoperative infective morbidity and the employment of antibiotic prophylaxis. Our sample is a group of 13285 pregnant women, 3171 (23.9%) of these patients underwent to CS from 1st January 1985 to 31st December 1994. The group of 3171 women was divided in two subgroups, the first of 2748 patients un-derwent to antibiotic prophylaxis, the second of 423 was untreated due to their previous experience of allergy towards antibiotics or because there was no evidence of risk factors. The women we treated with antibiotics underwent a three days prophylactic therapy with cefazolin or ampicillin soon after the CS. The incidence of infective complications had a 21.2% rate over a total of 3171 women. Endometritis was the most common infectious complication following cesarean delivery. The rate was 53.3% in the case of primary cesarean section and 52.3% in the case of iterative cesarean section. The use of antibiotic prophylaxis gave us the opportunity to reduce the postoperative morbidity in the primary CS (23.4%) as well in the iterative CS (16.6%). On the contrary the untreated group had an infective incidence with a 33.8% rate in the case of primary CS and with a 27.4% rate in the case of iterative CS. Our opinion is that the administration of antibiotics as cefazolin and ampicillin is able to reduce in a significant way the incidence of postoperative infective morbidity as well the period of hospitalization.
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Affiliation(s)
- A Di Lieto
- Università degli Studi di Napoli, Federico II, Napoli Facoltà di Medicina e Chirurgia
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Coulomb M, Ferretti G, Ranchoup Y, Blanc F, Albano G. [Progress in tomodensitometry. Applications in cancerology]. Bull Cancer 1995; 82 Suppl 5:536s-543s. [PMID: 8680061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Since 1992, spiral CT scanners replace conventional CT units in radiology departments. In the first part of this paper, we present some technical considerations concerning spiral CT (continuous rotation and emission of the source-detector; continuous translation of the patient at a constant rate through the gantry), as well as advantages and limitations of volumic acquisition. The main advantages can be summerized as: reduction of the acquisition time, optimization of contrast enhancement with intravenous opacification, and post processing allowing retrospective creation of overlapping images, multiplanar reconstructions, and 3-D reconstructions. Spiral CT improves lesions detection and characterization. Disadvantages are due to contrast media injection and radiation exposure. Then we describe clinical applications in the carcinologic field concerning pharyngo-laryngeal tumors, bronchogenic carcinoma, mediastinal tumors, pulmonary nodules, sub-diaphragmatic tumors. However, tumors of brain, spine, bone, and soft tissue are better explorated with MRI. Authors conclude on the future improvements of spiral CT.
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Affiliation(s)
- M Coulomb
- Service central de radiologie et imagerie médicale, hôpital Albert-Michallon, La Tronche, France
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Di Lieto A, De Rosa G, Albano G, Pagnano AM, Campanile M, Terracciano L, Pontillo M, Cimmino E, Covelli A, Paladini A. Desogestrel versus gestodene in oral contraceptives: influence on the clinical and histomorphological features of benign breast disease. Eur J Obstet Gynecol Reprod Biol 1994; 55:71-83. [PMID: 7958144 DOI: 10.1016/0028-2243(94)90211-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Forty-four female volunteers asking for oral contraception, affected by symptomatic benign breast disease (BBD) were evaluated to compare the effects on mastalgia and breast nodularity of two different low dose oral contraceptives (OCs), containing 20 micrograms [corrected] ethinylestradiol + 150 micrograms desogestrel (EE+D) and 30 micrograms ethinylestradiol + 75 micrograms gestodene (EE+G), respectively. Physical examination, bilateral thermography, X-ray and/or ultrasonography of breast, and needle and screw-needle biopsies of mammary tissue were performed in all patients before OCs administration and after six cycles of treatment. OCs administration caused an overall improvement of mastalgia in 53%. Breast nodularity improved only in 8% of patients in both groups. Epithelial tissue modifications in mammary biopsies were observed, with involutive and/or secretory histomorphological and ultrastructural changes, frequently coexisting in different areas of the same breast.
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Affiliation(s)
- A Di Lieto
- Department of Gynecology and Obstetrics, University of Naples Federico II, Italy
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Abstract
To determine the contribution of skeletal muscle to the insulin resistance of essential hypertension, insulin-stimulated forearm glucose uptake was quantitated in 12 control (age, 32 +/- 3 years) and 12 hypertensive subjects (age, 36 +/- 2 years) using the forearm perfusion technique. Peripheral insulin levels were raised acutely (approximately 60 microU/mL), while blood glucose concentration was clamped at its basal value (90 mg/dL) by a variable glucose infusion. During insulin stimulation, whole body glucose uptake was lower in hypertensive (4.5 +/- .3 mg.kg-1.min-1) than in normal subjects (5.8 +/- .4 mg.kg-1.min-1, P less than .05). Similarly, the amount of glucose taken up by the forearm was markedly reduced in the hypertensive (5.3 +/- .91 mg.L-1.min-1) compared with the control group (8.7 +/- 1.1 mg.L-1.min-1). No appreciable difference was observed as to forearm blood flow (39 +/- 4 mL.L-1.min-1 and 37 +/- 5 mL.L-1.min-1) in hypertensive patients. These results indicate that skeletal muscle is a major site of insulin resistance in essential hypertension and that this defect is independent of muscle perfusion.
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Affiliation(s)
- B Capaldo
- Department of Internal Medicine, Federico II University Medical School, Naples, Italy
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Abstract
To investigate the effects of carnitine on insulin sensitivity in non-insulin-dependent diabetes, insulin-mediated glucose disposal was measured in nine diabetic patients (age 54 +/- 3 years, BMI 27 +/- 1 kg/mq) during a primed (3 mmol) constant (1.7 mumol/min) intravenous infusion of carnitine. In control experiments, the same patients received saline instead of carnitine. Plasma glucose concentration was maintained constant at the level of 100 mg/dl during both studies while plasma insulin was raised to a plateau of 60 microU/ml. Despite similar insulin levels, whole-body glucose utilization was higher with carnitine (4.05 +/- 0.37 mg/kg/min) than saline infusion (3.52 +/- 0.36). Blood lactate concentrations were similar in the basal state and decreased significantly during carnitine infusion (P less than 0.05-0.005), whereas it remained substantially unchanged during saline infusion. Plasma FFA decreased to a similar level (0.1 mmol/l) in both studies. We conclude that an acute carnitine administration is able to improve insulin sensitivity in NIDDM patients. The lactate data suggest that this effect may at least in part be mediated by carnitine activation of pyruvate dehydrogenase.
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Affiliation(s)
- B Capaldo
- Department of Internal Medicine, 2nd Medical School, Federico II University, Naples, Italy
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Capaldo B, Napoli R, Di Bonito P, Albano G, Saccà L. Dual mechanism of insulin action on human skeletal muscle: identification of an indirect component not mediated by FFA. Am J Physiol 1991; 260:E389-94. [PMID: 2003592 DOI: 10.1152/ajpendo.1991.260.3.e389] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
To determine whether insulin action on human skeletal muscle is entirely accounted for by a direct effect of insulin per se, we quantitated forearm glucose uptake (FGU) in two groups of normal subjects under conditions of identical forearm tissue insulinization (approximately 90 microU/ml) induced by means of systemic (group I) or intrabrachial insulin infusion (group II). With this approach, a difference of FGU between the two groups is demonstrative of the operation of indirect mechanisms in insulin action. During insulin infusion in group I, euglycemia was maintained by a variable glucose infusion, whereas arterial free fatty acid (FFA) concentration fell below 0.1 mM. In group II, arterial concentrations of both glucose and FFA remained unchanged, indicating that insulin effect was indeed restricted to the forearm tissues. With local insulin administration, FGU reached levels approximately 40% lower than those achieved with systemic insulin infusion (P less than 0.01-0.005). To determine whether this difference could be attributed to the fall in FFA concentration associated with systemic insulinization, FGU was also quantitated during a systemic insulin plus heparin infusion (group III) to maintain FFA at their basal levels. In this condition, insulin-stimulated FGU was not different from that observed in group I. These data demonstrate that 1) insulin action on skeletal muscle glucose disposal is mediated by a direct as well as an indirect component, and 2) the maintenance of basal FFA does not affect insulin-stimulated FGU, indicating that the indirect component of insulin action is mediated by a different mechanism.
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Affiliation(s)
- B Capaldo
- Department of Internal Medicine, Second Medical School, Federico II University, Naples, Italy
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Capaldo B, Napoli R, Di Bonito P, Albano G, Saccà L. Glucose and gluconeogenic substrate exchange by the forearm skeletal muscle in hyperglycemic and insulin-treated type II diabetic patients. J Clin Endocrinol Metab 1990; 71:1220-3. [PMID: 2229281 DOI: 10.1210/jcem-71-5-1220] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
To determine the contribution of skeletal muscle to fasting hyperglycemia in noninsulin dependent type II diabetes (NIDDM), the forearm balance of glucose, lactate, and alanine was quantified in 25 control subjects, 21 hyperglycemic (blood glucose: 11.6 mmol/L), and 19 insulin-treated patients with NIDDM (blood glucose: 5.8 mmol/L). Forearm glucose uptake was similar in controls (4.6 +/- 0.6 mumol L-1 min-1) and in hyperglycemic diabetic patients (4.5 +/- 0.9 mumol L-1 min-1). In spite of this, in the diabetic patients lactate (5.1 +/- 0.8 mumol L-1 min-1) and alanine (2.6 +/- 0.4) release by the forearm was 3- and 2-fold higher than in the control group (lactate: 1.7 +/- 0.8, P less than 0.005; and alanine: 1.3 +/- 0.2, P less than 0.05, respectively). The ratio of lactate release to glucose uptake was 57% and 18% in diabetic and control subjects, respectively. Insulin administration did not affect either glucose uptake or the release of gluconeogenic substrates by the forearm. It is concluded that: 1) in fasting patients with NIDDM, glucose is taken up by the skeletal muscle in normal amounts but preferentially used nonoxidatively with lactate formation. This suggests that, although the muscle does not contribute directly to fasting hyperglycemia, it may play an indirect role through an increased delivery of glucose precursors; and 2) insulin-induced normoglycemia is maintained by mechanisms that do not involve the exchange of glucose and gluconeogenic substrates by the skeletal muscle.
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Affiliation(s)
- B Capaldo
- Department of Internal Medicine, Federico II University Second Medical School, Naples, Italy
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Crovatto M, Albano G, Santini GF. [Evaluation of the concentration of some disinfectants and antiseptics used in hospitals using the Kelsey-Sykes test]. Boll Chim Farm 1988; 127:109-13. [PMID: 3245899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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39
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Di Lieto A, Catalano D, Campanile M, Negri R, Albano G, Dell'Isola A, Paladini A, Orlandi GR. The morphological characteristics and ultrastructural aspects of cervical ripening induced by sulprostone. Acta Eur Fertil 1988; 19:33-6. [PMID: 3414330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Cervical tissue biopsies from fifteen pregnant women who were seeking a second trimester elective abortion were examined before and after sulprostone systemic administration, to evaluate the hystological and ultrastructural modifications. While light microscopy showed an increase in vascularity and a submucosal edema with an infiltration of inflammatory cells, electron microscopy pointed out a complete dissociation of collagen fibers with a large increase of basic substance constituents. These features are similar to modifications found in the ripening process at term, demonstrating that sulprostone can be useful to prime uterine cervix.
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Affiliation(s)
- A Di Lieto
- Università degli Studi di Napoli, II Facoltà di Medicina e Chirurgia Ginecologia ed Ostetricia
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Abstract
Commercial permanent hair-dye formulations containing p-phenylenediamine, resorcinol and aminophenols were incubated with hydrogen peroxide and then tested for their ability to induce reverse mutations in Salmonella typhimurium TA98. Approximately half of the formulations (12 out of 25) gave positive results. The activity varied widely in degree and was observed only in the presence of an S-9 microsomal fraction from Aroclor-induced male rats. Five of the 12 positive formulations and one negative dye were administered topically to male rats; with one exception the urines of animals treated with the mutagenic hair dyes gave positive results in the presence of the S-9 mix.
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Albano G, Guagliardo F. [Regulation of the heart rate in humans. I. Behavior of the heart rate during voluntary apnea]. Boll Soc Ital Biol Sper 1974; 50:1765-9. [PMID: 4462760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Albano G, Guagliardo F. [Regulation of the heart rate in humans. II. Characteristics of the response during voluntary apnea]. Boll Soc Ital Biol Sper 1974; 50:1770-4. [PMID: 4462761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Albano G, Guagliardo F, Leone A. [Regulation of the heart rate in humans. III. The heart rate during underwater immersion in apnea]. Boll Soc Ital Biol Sper 1974; 50:1775-9. [PMID: 4462762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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44
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Albano G, Criscuoli PM, Scaglione GC, Mazzone M, La Monaca G, Burruano G. [The extreme environmental pressure syndrome. EEG and ECG findings in rats with implanted electrodes]. Ann Med Nav (Roma) 1972; 77:11-28. [PMID: 5024304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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45
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Albano G, Burrano GM, Mazzone M, La Monaca G, Scaglione GS. [Histophatological studies of autochthonous dysbaric neuropathies induced with heliox in guinea pigs]. Folia Med (Napoli) 1971; 54:217-32. [PMID: 5152779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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46
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Albano G, Scaglione GC, Burruano G. [Cerebral circulation during hyperbaric oxygenation. Effects of 3-(methyl-hydroxyethylamino)-2-hydroxypropyl theophylline nicotinate. Preliminary note]. Boll Soc Ital Biol Sper 1970; 46:269-72. [PMID: 5457925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Albano G, Mazzone M, Scaglione GC. [Oxygen toxicity and inactive gas absorption in the course of hyperbaric muscular work. Cerebral and pulmonary rheographic findings at 2.5 ATA]. Folia Med (Napoli) 1969; 52:487-510. [PMID: 5396915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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48
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Albano G, Massari D. [The current status of air pollution in the petroleum industry]. Folia Med (Napoli) 1968; 51:882-7. [PMID: 5737864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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49
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Albano G, Ciulla C. [Preliminary experimental observations on a cardiocirculatory syndrome caused by hyperbaric helium respiration]. Boll Soc Ital Biol Sper 1966; 42:1248-50. [PMID: 5971157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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50
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Albano G. [Theory of the gaseous nucleus. The pressure gradient in the control of underwater decompression]. Folia Med (Napoli) 1965; 48:910-31. [PMID: 5866464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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