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Fischer J, Skeie MS, Rosendahl K, Tylleskär K, Lie S, Shi XQ, Gil EG, Cetrelli L, Halbig J, von Wangenheim Marti L, Rygg M, Frid P, Stoustrup P, Rosèn A. Prevalence of temporomandibular disorder in children and adolescents with juvenile idiopathic arthritis - a Norwegian cross- sectional multicentre study. BMC Oral Health 2020; 20:282. [PMID: 33050890 PMCID: PMC7557069 DOI: 10.1186/s12903-020-01234-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [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: 06/29/2020] [Accepted: 08/25/2020] [Indexed: 12/30/2022] Open
Abstract
Background Children and adolescents with juvenile idiopathic arthritis (JIA) may suffer pain from temporomandibular disorder (TMD). Still, routines for the assessment of temporomandibular joint (TMJ) pain in health and dental care are lacking. The aims of this study were to examine the prevalence of TMD in children and adolescents with JIA compared to their healthy peers and to investigate potential associations between JIA and TMD. Methods This comparative cross-sectional study is part of a longitudinal multicentre study performed during 2015–2020, including 228 children and adolescents aged 4–16 years with a diagnosis of JIA according to the ILAR criteria. This particular substudy draws on a subset of data from the first study visit, including assessments of TMD as part of a broader oral health examination. Children and adolescents with JIA were matched with healthy controls according to gender, age, and centre site. Five calibrated examiners performed the clinical oral examinations according to a standardised protocol, including shortened versions of the diagnostic criteria for TMD (DC/TMD) and the TMJaw Recommendations for Clinical TMJ Assessment in Patients Diagnosed with JIA. Symptoms were recorded and followed by a clinical examination assessing the masticatory muscles and TMJs. Results In our cohort of 221 participants with JIA and 221 healthy controls, 88 (39.8%) participants with JIA and 25 (11.3%) healthy controls presented with TMD based on symptoms and clinical signs. Painful TMD during the last 30 days was reported in 59 (26.7%) participants with JIA vs. 10 (5.0%) of the healthy controls (p < 0.001). Vertical unassisted jaw movement was lower in participants with JIA than in controls, with means of 46.2 mm vs. 49.0 mm, respectively (p < 0.001). Among participants with JIA, a higher proportion of those using synthetic disease-modifying antirheumatic-drugs and biologic disease-modifying antirheumatic-drugs presented with painful masticatory muscles and TMJs at palpation. Conclusion Symptoms and clinical signs of TMD were seen in approximately half of the JIA patients compared to about one fourth of their healthy peers. Painful palpation to masticatory muscles and decreased vertical unassisted jaw movement were more frequent in participants with JIA than among healthy controls and should be part of both medical and dental routine examinations in patients with JIA.
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Affiliation(s)
- J Fischer
- Department of Clinical Dentistry, The Faculty of Medicine, University of Bergen, Årstadveien 19, N-5009, Bergen, Norway.
| | - M S Skeie
- Department of Clinical Dentistry, The Faculty of Medicine, University of Bergen, Årstadveien 19, N-5009, Bergen, Norway.,Center for Oral Health Services and Research of Middle-Norway (TkMidt), Trondheim, Norway
| | - K Rosendahl
- Department of Radiology, University Hospital of North Norway, Tromsø, Norway.,UiT the Arctic University of North Norway, Tromsø, Norway
| | - K Tylleskär
- Department of Pediatrics, Haukeland University Hospital, Bergen, Norway
| | - S Lie
- Department of Clinical Dentistry, The Faculty of Medicine, University of Bergen, Årstadveien 19, N-5009, Bergen, Norway
| | - X-Q Shi
- Department of Clinical Dentistry, The Faculty of Medicine, University of Bergen, Årstadveien 19, N-5009, Bergen, Norway.,Department of Oral and Maxillofacial Radiology, Faculty of Odontology, University of Malmö, Malmö, Sweden
| | - E Grut Gil
- Department of Clinical Dentistry, The Faculty of Medicine, University of Bergen, Årstadveien 19, N-5009, Bergen, Norway
| | - L Cetrelli
- Center for Oral Health Services and Research of Middle-Norway (TkMidt), Trondheim, Norway
| | - J Halbig
- Public Dental Service Competence Centre of Northern-Norway (TkNN), Tromsø, Norway
| | - L von Wangenheim Marti
- Department of Clinical Dentistry, The Faculty of Medicine, University of Bergen, Årstadveien 19, N-5009, Bergen, Norway
| | - M Rygg
- Department of Clinical and Molecular Medicine, NTNU - Norwegian University of Science and Technology, Trondheim, Norway.,Department of Pediatrics, St. Olavs Hospital, Trondheim, Norway
| | - P Frid
- Public Dental Service Competence Centre of Northern-Norway (TkNN), Tromsø, Norway.,Department of Otorhinolaryngology, Division of Oral and Maxillofacial Surgery, University Hospital North Norway, Tromsø, Norway.,Department of Clinical Medicine, Faculty of Health Sciences, The Arctic University of Norway, Tromsø, Norway
| | - P Stoustrup
- Section of Orthodontics, Faculty of Health Sciences, Aarhus University, Aarhus, Denmark
| | - A Rosèn
- Department of Clinical Dentistry, The Faculty of Medicine, University of Bergen, Årstadveien 19, N-5009, Bergen, Norway.,Department of Oral and Maxillofacial Surgery, Haukeland University Hospital, Bergen, Norway
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Smith JR, Ashander LM, Arruda SL, Cordeiro CA, Lie S, Rochet E, Belfort R, Furtado JM. Pathogenesis of ocular toxoplasmosis. Prog Retin Eye Res 2020; 81:100882. [PMID: 32717377 DOI: 10.1016/j.preteyeres.2020.100882] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [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: 04/20/2020] [Revised: 06/26/2020] [Accepted: 06/30/2020] [Indexed: 12/12/2022]
Abstract
Ocular toxoplasmosis is a retinitis -almost always accompanied by vitritis and choroiditis- caused by intraocular infection with Toxoplasma gondii. Depending on retinal location, this condition may cause substantial vision impairment. T. gondii is an obligate intracellular protozoan parasite, with both sexual and asexual life cycles, and infection is typically contracted orally by consuming encysted bradyzoites in undercooked meat, or oocysts on unwashed garden produce or in contaminated water. Presently available anti-parasitic drugs cannot eliminate T. gondii from the body. In vitro studies using T. gondii tachyzoites, and human retinal cells and tissue have provided important insights into the pathogenesis of ocular toxoplasmosis. T. gondii may cross the vascular endothelium to access human retina by at least three routes: in leukocyte taxis; as a transmigrating tachyzoite; and after infecting endothelial cells. The parasite is capable of navigating the human neuroretina, gaining access to a range of cell populations. Retinal Müller glial cells are preferred initial host cells. T. gondii infection of the retinal pigment epithelial cells alters the secretion of growth factors and induces proliferation of adjacent uninfected epithelial cells. This increases susceptibility of the cells to parasite infection, and may be the basis of the characteristic hyperpigmented toxoplasmic retinal lesion. Infected epithelial cells also generate a vigorous immunologic response, and influence the activity of leukocytes that infiltrate the retina. A range of T. gondii genotypes are associated with human ocular toxoplasmosis, and individual immunogenetics -including polymorphisms in genes encoding innate immune receptors, human leukocyte antigens and cytokines- impacts the clinical manifestations. Research into basic pathogenic mechanisms of ocular toxoplasmosis highlights the importance of prevention and suggests new biological drug targets for established disease.
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Affiliation(s)
- Justine R Smith
- Eye & Vision Health and Flinders Centre for Innovation in Cancer, Flinders University College of Medicine & Public Health, Adelaide, Australia; Formerly of Casey Eye Institute, Oregon Health & Science University, USA.
| | - Liam M Ashander
- Eye & Vision Health and Flinders Centre for Innovation in Cancer, Flinders University College of Medicine & Public Health, Adelaide, Australia; Formerly of Casey Eye Institute, Oregon Health & Science University, USA
| | - Sigrid L Arruda
- Department of Ophthalmology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Cynthia A Cordeiro
- Cordeiro et Costa Ophtalmologie, Campos dos Goytacazes, Brazil; Formerly of Department of Ophthalmology, Federal University of Minas Gerais School of Medicine, Belo Horizonte, Brazil
| | - Shervi Lie
- Eye & Vision Health and Flinders Centre for Innovation in Cancer, Flinders University College of Medicine & Public Health, Adelaide, Australia
| | - Elise Rochet
- Eye & Vision Health and Flinders Centre for Innovation in Cancer, Flinders University College of Medicine & Public Health, Adelaide, Australia
| | - Rubens Belfort
- Department of Ophthalmology, Federal University of São Paulo, São Paulo, Brazil
| | - João M Furtado
- Department of Ophthalmology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil; Formerly of Casey Eye Institute, Oregon Health & Science University, USA
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Ling NXY, Kaczmarek A, Hoque A, Davie E, Ngoei KRW, Morrison KR, Smiles WJ, Forte GM, Wang T, Lie S, Dite TA, Langendorf CG, Scott JW, Oakhill JS, Petersen J. mTORC1 directly inhibits AMPK to promote cell proliferation under nutrient stress. Nat Metab 2020; 2:41-49. [PMID: 31993556 PMCID: PMC6986917 DOI: 10.1038/s42255-019-0157-1] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Central to cellular metabolism and cell proliferation are highly conserved signalling pathways controlled by mammalian target of rapamycin (mTOR) and AMP-activated protein kinase (AMPK)1,2, dysregulation of which are implicated in pathogenesis of major human diseases such as cancer and type 2 diabetes. AMPK pathways leading to reduced cell proliferation are well established and, in part, act through inhibition of TOR complex-1 (TORC1) activity. Here we demonstrate reciprocal regulation, specifically that TORC1 directly down-regulates AMPK signalling by phosphorylating the evolutionarily conserved residue Ser367 in the fission yeast AMPK catalytic subunit Ssp2, and AMPK α1Ser347/α2Ser345 in the mammalian homologs, which is associated with reduced phosphorylation of activation loop Thr172. Genetic or pharmacological inhibition of TORC1 signalling led to AMPK activation in the absence of increased AMP:ATP ratios; under nutrient stress conditions this was associated with growth limitation in both yeast and human cell cultures. Our findings reveal fundamental, bi-directional regulation between two major metabolic signalling networks and uncover new opportunity for cancer treatment strategies aimed at suppressing cell proliferation in the nutrient-poor tumor microenvironment.
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Affiliation(s)
- Naomi X Y Ling
- Metabolic Signalling Laboratory, St Vincent's Institute of Medical Research, School of Medicine, University of Melbourne, Melbourne, Victoria, Australia
| | - Adrian Kaczmarek
- Flinders Centre for Innovation in Cancer, College of Medicine and Public Health, Flinders University, Adelaide, South Australia, Australia
| | - Ashfaqul Hoque
- Metabolic Signalling Laboratory, St Vincent's Institute of Medical Research, School of Medicine, University of Melbourne, Melbourne, Victoria, Australia
| | - Elizabeth Davie
- Faculty of Life Sciences, University of Manchester, Manchester, UK
| | - Kevin R W Ngoei
- Protein Chemistry and Metabolism Unit, St Vincent's Institute of Medical Research, School of Medicine, University of Melbourne, Melbourne, Victoria, Australia
| | - Kaitlin R Morrison
- Flinders Centre for Innovation in Cancer, College of Medicine and Public Health, Flinders University, Adelaide, South Australia, Australia
| | - William J Smiles
- Metabolic Signalling Laboratory, St Vincent's Institute of Medical Research, School of Medicine, University of Melbourne, Melbourne, Victoria, Australia
| | | | - Tingting Wang
- Flinders Centre for Innovation in Cancer, College of Medicine and Public Health, Flinders University, Adelaide, South Australia, Australia
| | - Shervi Lie
- Flinders Centre for Innovation in Cancer, College of Medicine and Public Health, Flinders University, Adelaide, South Australia, Australia
| | - Toby A Dite
- Metabolic Signalling Laboratory, St Vincent's Institute of Medical Research, School of Medicine, University of Melbourne, Melbourne, Victoria, Australia
- MRC Protein Phosphorylation and Ubiquitylation Unit, James Black Centre, University of Dundee, Dundee, UK
| | - Christopher G Langendorf
- Protein Chemistry and Metabolism Unit, St Vincent's Institute of Medical Research, School of Medicine, University of Melbourne, Melbourne, Victoria, Australia
| | - John W Scott
- Protein Chemistry and Metabolism Unit, St Vincent's Institute of Medical Research, School of Medicine, University of Melbourne, Melbourne, Victoria, Australia
- Mary MacKillop Institute for Health Research, Australian Catholic University, Melbourne, Victoria, Australia
- Florey Institute of Neuroscience and Mental Health, Parkville, Victoria, Australia
| | - Jonathan S Oakhill
- Metabolic Signalling Laboratory, St Vincent's Institute of Medical Research, School of Medicine, University of Melbourne, Melbourne, Victoria, Australia.
- Mary MacKillop Institute for Health Research, Australian Catholic University, Melbourne, Victoria, Australia.
| | - Janni Petersen
- Flinders Centre for Innovation in Cancer, College of Medicine and Public Health, Flinders University, Adelaide, South Australia, Australia.
- Faculty of Life Sciences, University of Manchester, Manchester, UK.
- Nutrition and Metabolism, South Australia Health and Medical Research Institute, Adelaide, South Australia, Australia.
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Ashander LM, Lie S, Ma Y, Rochet E, Washington JM, Furtado JM, Appukuttan B, Smith JR. Neutrophil Activities in Human Ocular Toxoplasmosis: An In Vitro Study With Human Cells. ACTA ACUST UNITED AC 2019; 60:4652-4660. [DOI: 10.1167/iovs.19-28306] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Liam M. Ashander
- Eye & Vision Health, Flinders University College of Medicine & Public Health, Adelaide, Australia
| | - Shervi Lie
- Eye & Vision Health, Flinders University College of Medicine & Public Health, Adelaide, Australia
| | - Yuefang Ma
- Eye & Vision Health, Flinders University College of Medicine & Public Health, Adelaide, Australia
| | - Elise Rochet
- Eye & Vision Health, Flinders University College of Medicine & Public Health, Adelaide, Australia
| | - Jennifer M. Washington
- Eye & Vision Health, Flinders University College of Medicine & Public Health, Adelaide, Australia
| | - João M. Furtado
- Faculty of Medicine of Ribeirão Preto - University of São Paulo, Ribeirão Preto, Brazil
| | - Binoy Appukuttan
- Eye & Vision Health, Flinders University College of Medicine & Public Health, Adelaide, Australia
- Flinders Centre for Innovation in Cancer, Flinders University College of Medicine & Public Health, Adelaide, Australia
| | - Justine R. Smith
- Eye & Vision Health, Flinders University College of Medicine & Public Health, Adelaide, Australia
- Flinders Centre for Innovation in Cancer, Flinders University College of Medicine & Public Health, Adelaide, Australia
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Lie S, Rochet E, Segerdell E, Ma Y, Ashander LM, Shadforth AMA, Blenkinsop TA, Michael MZ, Appukuttan B, Wilmot B, Smith JR. Immunological Molecular Responses of Human Retinal Pigment Epithelial Cells to Infection With Toxoplasma gondii. Front Immunol 2019; 10:708. [PMID: 31118929 PMCID: PMC6506780 DOI: 10.3389/fimmu.2019.00708] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [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: 10/02/2018] [Accepted: 03/15/2019] [Indexed: 11/13/2022] Open
Abstract
Ocular toxoplasmosis is the commonest clinical manifestation of infection with obligate intracellular parasite, Toxoplasma gondii. Active ocular toxoplasmosis is characterized by replication of T. gondii tachyzoites in the retina, with reactive inflammation. The multifunctional retinal pigment epithelium is a key target cell population for T. gondii. Since the global gene expression profile is germane to understanding molecular involvements of retinal pigment epithelial cells in ocular toxoplasmosis, we performed RNA-Sequencing (RNA-Seq) of human cells following infection with T. gondii tachyzoites. Primary cell isolates from eyes of cadaveric donors (n = 3), and the ARPE-19 human retinal pigment epithelial cell line, were infected for 24 h with GT-1 strain T. gondii tachyzoites (multiplicity of infection = 5) or incubated uninfected as control. Total and small RNA were extracted from cells and sequenced on the Illumina NextSeq 500 platform; results were aligned to the human hg19 reference sequence. Multidimensional scaling showed good separation between transcriptomes of infected and uninfected primary cell isolates, which were compared in edgeR software. This differential expression analysis revealed a sizeable response in the total RNA transcriptome-with significantly differentially expressed genes totaling 7,234 (28.9% of assigned transcripts)-but very limited changes in the small RNA transcriptome-totaling 30 (0.35% of assigned transcripts) and including 8 microRNA. Gene ontology and pathway enrichment analyses of differentially expressed total RNA in CAMERA software, identified a strong immunologic transcriptomic signature. We conducted RT-qPCR for 26 immune response-related protein-coding and long non-coding transcripts in epithelial cell isolates from different cadaveric donors (n = 3), extracted by a different isolation protocol but similarly infected with T. gondii, to confirm immunological activity of infected cells. For microRNA, increases in miR-146b and miR-212 were detected by RT-qPCR in 2 and 3 of these independent cell isolates. Biological network analysis in the InnateDB platform, including 735 annotated differentially expressed genes plus 2,046 first-order interactors, identified 10 contextural hubs and 5 subnetworks in the transcriptomic immune response of cells to T. gondii. Our observations provide a solid base for future studies of molecular and cellular interactions between T. gondii and the human retinal pigment epithelium to illuminate mechanisms of ocular toxoplasmosis.
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Affiliation(s)
- Shervi Lie
- Eye and Vision Health, Flinders University College of Medicine and Public Health, Adelaide, SA, Australia
| | - Elise Rochet
- Eye and Vision Health, Flinders University College of Medicine and Public Health, Adelaide, SA, Australia
| | - Erik Segerdell
- Department of Biostatistics, Oregon Health and Sciences University, Portland, OR, United States
| | - Yuefang Ma
- Eye and Vision Health, Flinders University College of Medicine and Public Health, Adelaide, SA, Australia
| | - Liam M. Ashander
- Eye and Vision Health, Flinders University College of Medicine and Public Health, Adelaide, SA, Australia
| | - Audra M. A. Shadforth
- Queensland Eye Institute, Brisbane, QLD, Australia
- School of Biomedical Science, Queensland University of Technology, Brisbane, QLD, Australia
| | - Timothy A. Blenkinsop
- Departments of Cell, Developmental and Regenerative Biology, and Ophthalmology, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Michael Z. Michael
- Flinders Centre for Innovation in Cancer, Flinders University College of Medicine and Public Health, Adelaide, SA, Australia
| | - Binoy Appukuttan
- Eye and Vision Health, Flinders University College of Medicine and Public Health, Adelaide, SA, Australia
- Flinders Centre for Innovation in Cancer, Flinders University College of Medicine and Public Health, Adelaide, SA, Australia
| | - Beth Wilmot
- Department of Biostatistics, Oregon Health and Sciences University, Portland, OR, United States
| | - Justine R. Smith
- Eye and Vision Health, Flinders University College of Medicine and Public Health, Adelaide, SA, Australia
- Flinders Centre for Innovation in Cancer, Flinders University College of Medicine and Public Health, Adelaide, SA, Australia
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Forte GM, Davie E, Lie S, Franz-Wachtel M, Ovens AJ, Wang T, Oakhill JS, Maček B, Hagan IM, Petersen J. Import of extracellular ATP in yeast and man modulates AMPK and TORC1 signalling. J Cell Sci 2019; 132:jcs223925. [PMID: 30814334 PMCID: PMC6467490 DOI: 10.1242/jcs.223925] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Accepted: 02/15/2019] [Indexed: 01/31/2023] Open
Abstract
AMP-activated kinase (AMPK) and target of rapamycin (TOR) signalling coordinate cell growth, proliferation, metabolism and cell survival with the nutrient environment of cells. The poor vasculature and nutritional stress experienced by cells in solid tumours raises the question: how do they assimilate sufficient nutrients to survive? Here, we show that human and fission yeast cells import ATP and AMP from their external environment to regulate AMPK and TOR signalling. Exposure of fission yeast (Schizosaccharomyces pombe) and human cells to external AMP impeded cell growth; however, in yeast this restraining impact required AMPK. In contrast, external ATP rescued the growth defect of yeast mutants with reduced TORC1 signalling; furthermore, exogenous ATP transiently enhanced TORC1 signalling in both yeast and human cell lines. Addition of the PANX1 channel inhibitor probenecid blocked ATP import into human cell lines suggesting that this channel may be responsible for both ATP release and uptake in mammals. In light of these findings, it is possible that the higher extracellular ATP concentration reported in solid tumours is both scavenged and recognized as an additional energy source beneficial for cell growth.
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Affiliation(s)
- Gabriella M Forte
- Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, M13 9PT, United Kingdom
| | - Elizabeth Davie
- Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, M13 9PT, United Kingdom
| | - Shervi Lie
- Flinders Centre for Innovation in Cancer, College of Medicine & Public health, Flinders University, Adelaide, SA 5001, Australia
| | - Mirita Franz-Wachtel
- Proteome Center Tuebingen, University of Tuebingen, Auf der Morgenstelle 15, 72076 Tuebingen, Germany
| | - Ashley J Ovens
- Metabolic Signalling Laboratory, St Vincent's Institute of Medical Research, School of Medicine, University of Melbourne, Victoria 3065, Australia
- Mary MacKillop Institute for Health Research, Australian Catholic University, Victoria 3000, Australia
| | - Tingting Wang
- Flinders Centre for Innovation in Cancer, College of Medicine & Public health, Flinders University, Adelaide, SA 5001, Australia
| | - Jonathan S Oakhill
- Metabolic Signalling Laboratory, St Vincent's Institute of Medical Research, School of Medicine, University of Melbourne, Victoria 3065, Australia
- Mary MacKillop Institute for Health Research, Australian Catholic University, Victoria 3000, Australia
| | - Boris Maček
- Proteome Center Tuebingen, University of Tuebingen, Auf der Morgenstelle 15, 72076 Tuebingen, Germany
| | - Iain M Hagan
- Cancer Research UK Manchester institute, Alderley Park, Macclesfield SK10 4TG, United Kingdom
| | - Janni Petersen
- Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, M13 9PT, United Kingdom
- Flinders Centre for Innovation in Cancer, College of Medicine & Public health, Flinders University, Adelaide, SA 5001, Australia
- South Australia Health and Medical Research Institute, North Terrace, PO Box 11060, Adelaide SA 5000 Australia
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Lie S, Banks P, Lawless C, Lydall D, Petersen J. The contribution of non-essential Schizosaccharomyces pombe genes to fitness in response to altered nutrient supply and target of rapamycin activity. Open Biol 2019; 8:rsob.180015. [PMID: 29720420 PMCID: PMC5990653 DOI: 10.1098/rsob.180015] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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: 02/23/2018] [Accepted: 04/06/2018] [Indexed: 12/12/2022] Open
Abstract
Nutrient fluctuations in the cellular environment promote changes in cell metabolism and growth to adapt cell proliferation accordingly. The target of rapamycin (TOR) signalling network plays a key role in the coordination of growth and cell proliferation with the nutrient environment and, importantly, nutrient limitation reduces TOR complex 1 (TORC1) signalling. We have performed global quantitative fitness profiling of the collection of Schizosaccharomyces pombe strains from which non-essential genes have been deleted. We identified genes that regulate fitness when cells are grown in a nutrient-rich environment compared with minimal environments, with varying nitrogen sources including ammonium, glutamate and proline. In addition, we have performed the first global screen for genes that regulate fitness when both TORC1 and TORC2 signalling is reduced by Torin1. Analysis of genes whose deletions altered fitness when nutrients were limited, or when TOR signalling was compromised, identified a large number of genes that regulate transmembrane transport, transcription and chromatin organization/regulation and vesicle-mediated transport. The ability to tolerate reduced TOR signalling placed demands upon a large number of biological processes including autophagy, mRNA metabolic processing and nucleocytoplasmic transport. Importantly, novel biological processes and all processes known to be regulated by TOR were identified in our screens. In addition, deletion of 62 genes conserved in humans gave rise to strong sensitivity or resistance to Torin1, and 29 of these 62 genes have novel links to TOR signalling. The identification of chromatin and transcriptional regulation, nutritional uptake and transport pathways in this powerful genetic model now paves the way for a molecular understanding of how cells adapt to the chronic and acute fluctuations in nutrient supply that all eukaryotes experience at some stage, and which is a key feature of cancer cells within solid tumours.
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Affiliation(s)
- Shervi Lie
- Flinders Centre for Innovation in Cancer, College of Medicine & Public Health, Flinders University, Bedford Park, Adelaide, South Australia 5042, Australia
| | - Peter Banks
- High Throughput Screening Facility, Newcastle Biomedicine, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Conor Lawless
- Institute for Cell & Molecular Biosciences, Newcastle University Medical School, Newcastle upon Tyne NE2 4HH, UK
| | - David Lydall
- Institute for Cell & Molecular Biosciences, Newcastle University Medical School, Newcastle upon Tyne NE2 4HH, UK
| | - Janni Petersen
- Flinders Centre for Innovation in Cancer, College of Medicine & Public Health, Flinders University, Bedford Park, Adelaide, South Australia 5042, Australia .,South Australia Health and Medical Research Institute, North Terrace, PO Box 11060, Adelaide, South Australia 5000, Australia
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Lie S, Wang T, Forbes B, Proud CG, Petersen J. The ability to utilise ammonia as nitrogen source is cell type specific and intricately linked to GDH, AMPK and mTORC1. Sci Rep 2019; 9:1461. [PMID: 30728400 PMCID: PMC6365639 DOI: 10.1038/s41598-018-37509-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 11/28/2018] [Indexed: 11/23/2022] Open
Abstract
Ammonia can be utilised as an alternative nitrogen source to glutamine to support cell proliferation. However, the underlying molecular mechanisms and whether all cells have this ability is not fully understood. We find that eleven cancer and non-cancerous cell lines have opposite abilities to tolerate and utilise ammonia to support proliferation in a glutamine-depleted environment. HEK293, Huh7, T47D and MCF7 cells can use ammonia, when starved of glutamine, to support proliferation to varying degrees. Glutamine depletion reduced mTORC1 activity, while additional ammonia supplementation diminished this mTORC1 inhibition. Depletion of glutamine promoted a rapid and transient activation of AMPK, whereas, additional ammonia supplementation blocked this starvation-induced AMPK activation. As expected, drug-induced AMPK activation reduced cell proliferation in glutamine-depleted cells supplemented with ammonia. Surprisingly, mTORC1 activity was largely unchanged despite the enhanced AMPK activity, suggesting that AMPK does not inhibit mTORC1 signalling under these conditions. Finally, glutamate dehydrogenase (GDH) inhibition, a key enzyme regulating ammonia assimilation, leads to AMPK activation, mTORC1 inhibition and reduced proliferation. Ammonia provides an alternative nitrogen source that aids certain cancer cells ability to thrive in nutrient-deprived environment. The ability of cells to utilise ammonia as a nitrogen source is intricately linked to AMPK, mTORC1 and GDH.
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Affiliation(s)
- Shervi Lie
- Flinders Centre for Innovation in Cancer, College of Medicine and Public health, Flinders University, Adelaide, SA, 5042, Australia
| | - Tingting Wang
- Flinders Centre for Innovation in Cancer, College of Medicine and Public health, Flinders University, Adelaide, SA, 5042, Australia
| | - Briony Forbes
- Flinders Centre for Innovation in Cancer, College of Medicine and Public health, Flinders University, Adelaide, SA, 5042, Australia
| | - Christopher G Proud
- Nutrition and Metabolism, South Australia Health and Medical Research Institute, North Terrace, PO Box 11060, Adelaide, SA, 5000, Australia
| | - Janni Petersen
- Flinders Centre for Innovation in Cancer, College of Medicine and Public health, Flinders University, Adelaide, SA, 5042, Australia. .,Nutrition and Metabolism, South Australia Health and Medical Research Institute, North Terrace, PO Box 11060, Adelaide, SA, 5000, Australia.
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Lie S, Ong C, Tan J, Huang D, Nairismägi M, Lim S, Tan S, Teh B, Yeoh K. Abrogation of JAK/STAT Pathway in Radiosensitization of NK/T Cell Lymphoma. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1865] [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: 11/15/2022]
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Bharadwaj AS, Stempel AJ, Olivas A, Franzese SE, Ashander LM, Ma Y, Lie S, Appukuttan B, Smith JR. Molecular Signals Involved in Human B Cell Migration into the Retina: In Vitro Investigation of ICAM-1, VCAM-1, and CXCL13. Ocul Immunol Inflamm 2016; 25:811-819. [PMID: 27380422 DOI: 10.1080/09273948.2016.1180401] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
PURPOSE B cells participate in diverse retinal immunopathologies. Endothelial adhesion molecules and chemokines direct leukocyte trafficking. We examined the involvement of three molecular signals in retinal transendothelial migration of human B cells: ICAM-1, VCAM-1, and CXCL13. METHODS Peripheral blood B cells were isolated by negative selection. Migration was studied in transwells populated with human retinal endothelial monolayers, using antibody to block ICAM-1 or VCAM-1. Retinal expression of CXCL13 was investigated. RESULTS B cells crossed retinal endothelium. ICAM-1 blockade significantly reduced migration when results for all subjects were combined, and for a majority when results were analyzed by individual. This effect was irrespective of the presence or absence of CXCL13, although CXCL13 increased migration. CXCL13 was detected in neural retina and retinal pigment epithelium. Endothelial cells of some retinal vessels presented CXCL13 protein. CONCLUSION ICAM-1 blockade may be an effective treatment in some patients with retinal diseases that involve B cells.
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Affiliation(s)
- Arpita S Bharadwaj
- a Casey Eye Institute , Oregon Health & Science University , Portland , Oregon , USA
| | - Andrew J Stempel
- b Eye and Vision Health Laboratory , School of Medicine, Flinders University , Adelaide , Australia
| | - Antoinette Olivas
- a Casey Eye Institute , Oregon Health & Science University , Portland , Oregon , USA
| | - Samone E Franzese
- a Casey Eye Institute , Oregon Health & Science University , Portland , Oregon , USA
| | - Liam M Ashander
- a Casey Eye Institute , Oregon Health & Science University , Portland , Oregon , USA.,b Eye and Vision Health Laboratory , School of Medicine, Flinders University , Adelaide , Australia
| | - Yuefang Ma
- b Eye and Vision Health Laboratory , School of Medicine, Flinders University , Adelaide , Australia
| | - Shervi Lie
- b Eye and Vision Health Laboratory , School of Medicine, Flinders University , Adelaide , Australia
| | - Binoy Appukuttan
- b Eye and Vision Health Laboratory , School of Medicine, Flinders University , Adelaide , Australia
| | - Justine R Smith
- a Casey Eye Institute , Oregon Health & Science University , Portland , Oregon , USA.,b Eye and Vision Health Laboratory , School of Medicine, Flinders University , Adelaide , Australia
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Lie S, Morrison JL, Williams-Wyss O, Suter CM, Humphreys DT, Ozanne SE, Zhang S, MacLaughlin SM, Kleemann DO, Walker SK, Roberts CT, McMillen IC. Impact of maternal undernutrition around the time of conception on factors regulating hepatic lipid metabolism and microRNAs in singleton and twin fetuses. Am J Physiol Endocrinol Metab 2016; 310:E148-59. [PMID: 26487010 PMCID: PMC4719029 DOI: 10.1152/ajpendo.00600.2014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 08/31/2015] [Indexed: 01/11/2023]
Abstract
We have investigated the effects of embryo number and maternal undernutrition imposed either around the time of conception or before implantation on hepatic lipid metabolism in the sheep fetus. We have demonstrated that periconceptional undernutrition and preimplantation undernutrition each resulted in decreased hepatic fatty acid β-oxidation regulators, PGC-1α (P < 0.05), PDK2 (P < 0.01), and PDK4 (P < 0.01) mRNA expression in singleton and twin fetuses at 135-138 days gestation. In singletons, there was also lower hepatic PDK4 (P < 0.01), CPT-1 (P < 0.01), and PKCζ (P < 0.01) protein abundance in the PCUN and PIUN groups and a lower protein abundance of PDPK-1 (P < 0.05) in the PCUN group. Interestingly, in twins, the hepatic protein abundance of p-AMPK (Ser(485)) (P < 0.01), p-PDPK-1 (Ser(41)) (P < 0.05), and PKCζ (P < 0.05) was higher in the PCUN and PIUN groups, and hepatic PDK4 (P < 0.001) and CPT-1 (P < 0.05) protein abundance was also higher in the PIUN twin fetus. We also found that the expression of a number of microRNAs was altered in response to PCUN or PIUN and that there is evidence that these changes may underlie the changes in the protein abundance of key regulators of hepatic fatty acid β-oxidation in the PCUN and PIUN groups. Therefore, embryo number and the timing of maternal undernutrition in early pregnancy have a differential impact on hepatic microRNA expression and on the factors that regulate hepatic fatty acid oxidation and lipid synthesis.
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Affiliation(s)
- Shervi Lie
- Sansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia
| | - Janna L Morrison
- Sansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia
| | - Olivia Williams-Wyss
- Sansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia; Discipline of Physiology, School of Medical Sciences, University of Adelaide, Adelaide, Australia
| | - Catherine M Suter
- Victor Chang Cardiac Research Institute, Darlinghurst, Australia; Faculty of Medicine, University of New South Wales, Kensington, Australia
| | | | - Susan E Ozanne
- University of Cambridge, Metabolic Research Laboratories, Institute of Metabolic Science, Addenbrooke's Hospital, Cambridge, United Kingdom
| | - Song Zhang
- Sansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia
| | - Severence M MacLaughlin
- Sansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia
| | - David O Kleemann
- South Australian Research and Development Institute, Turretfield Research Centre, Rosedale, Australia
| | - Simon K Walker
- South Australian Research and Development Institute, Turretfield Research Centre, Rosedale, Australia
| | - Claire T Roberts
- Institute and School of Paediatrics and Reproductive Health, University of Adelaide, Adelaide, Australia; and
| | - I Caroline McMillen
- Sansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia; The Chancellery, University of Newcastle, Newcastle, Australia
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Lie S, Kessler P, Merten H. First clinical experience in elevation of the maxillary sinus membrane for de-novo bone formation. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.672] [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: 10/22/2022]
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Lie S, Morrison JL, Williams-Wyss O, Suter CM, Humphreys DT, Ozanne SE, Zhang S, MacLaughlin SM, Kleemann DO, Walker SK, Roberts CT, McMillen IC. Impact of periconceptional and preimplantation undernutrition on factors regulating myogenesis and protein synthesis in muscle of singleton and twin fetal sheep. Physiol Rep 2015; 3:3/8/e12495. [PMID: 26265755 PMCID: PMC4562581 DOI: 10.14814/phy2.12495] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
In this study, we determined the effect of maternal undernutrition in the periconceptional (PCUN: ~80 days before to 6 days after conception) and preimplantation (PIUN: 0-6 days after conception) periods on the mRNA and protein abundance of key factors regulating myogenesis and protein synthesis, and on the relationship between the abundance of these factors and specific microRNA expression in the quadriceps muscle of singleton and twin fetal sheep at 135-138 days of gestation. PCUN and PIUN resulted in a decrease in the protein abundance of MYF5, a factor which determines the myogenic lineage, in singletons and twins. Interestingly, there was a concomitant increase in insulin-like growth factor-1 mRNA expression, a decrease in the protein abundance of the myogenic inhibitor, myostatin (MSTN), and an increase in the mRNA and protein abundance of the MSTN inhibitor, follistatin (FST), in the PCUN and PIUN groups in both singletons and twins. These promyogenic changes may compensate for the decrease in MYF5 protein abundance evoked by early embryonic undernutrition. PCUN and PIUN also increased the protein abundance of phosphorylated eukaryotic translation initiation factor binding protein 1 (EIF4EBP1; T70 and S65) in fetal muscle in singletons and twins. There was a significant inverse relationship between the expression of miR-30a-5p, miR-30d-5p, miR-27b-3p, miR106b-5p, and miR-376b and the protein abundance of mechanistic target of rapamycin (MTOR), FST, or MYF5 in singletons or twins. In particular, the expression of miR-30a-5p was increased and MYF5 protein abundance was decreased, in PCUN and PIUN twins supporting the conclusion that the impact of PCUN and PIUN is predominantly on the embryo.
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Affiliation(s)
- Shervi Lie
- Sansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South AustraliaAdelaide, South Australia, Australia
| | - Janna L Morrison
- Sansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South AustraliaAdelaide, South Australia, Australia
| | - Olivia Williams-Wyss
- Sansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South AustraliaAdelaide, South Australia, Australia,Discipline of Physiology, School of Medical Sciences, University of AdelaideAdelaide, South Australia, Australia
| | - Catherine M Suter
- Victor Chang Cardiac Research InstituteDarlinghurst, New South Wales, Australia,Faculty of Medicine, University of New South WalesKensington, New South Wales, Australia
| | - David T Humphreys
- Victor Chang Cardiac Research InstituteDarlinghurst, New South Wales, Australia
| | - Susan E Ozanne
- Metabolic Research Laboratories, Institute of Metabolic Science, Addenbrooke’s Hospital, University of CambridgeCambridge, UK
| | - Song Zhang
- Sansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South AustraliaAdelaide, South Australia, Australia
| | - Severence M MacLaughlin
- Sansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South AustraliaAdelaide, South Australia, Australia
| | - David O Kleemann
- South Australian Research and Development Institute, Turretfield Research CentreRosedale, South Australia, Australia
| | - Simon K Walker
- South Australian Research and Development Institute, Turretfield Research CentreRosedale, South Australia, Australia
| | - Claire T Roberts
- Discipline of Obstetrics and Gynaecology, University of AdelaideAdelaide, South Australia, Australia
| | - I Caroline McMillen
- Sansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South AustraliaAdelaide, South Australia, Australia,The Chancellery, University of NewcastleNewcastle, New South Wales, Australia,Correspondence I. C. McMillen, The Chancellery, University of Newcastle, Callaghan, NSW 2308, Australia., Tel: 02-4921-5101, Fax: 02-4921-5115, E-mail:
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Padhee M, Zhang S, Lie S, Wang KC, Botting KJ, McMillen IC, MacLaughlin SM, Morrison JL. The periconceptional environment and cardiovascular disease: does in vitro embryo culture and transfer influence cardiovascular development and health? Nutrients 2015; 7:1378-425. [PMID: 25699984 PMCID: PMC4377860 DOI: 10.3390/nu7031378] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Revised: 01/22/2015] [Accepted: 01/30/2015] [Indexed: 02/07/2023] Open
Abstract
Assisted Reproductive Technologies (ARTs) have revolutionised reproductive medicine; however, reports assessing the effects of ARTs have raised concerns about the immediate and long-term health outcomes of the children conceived through ARTs. ARTs include manipulations during the periconceptional period, which coincides with an environmentally sensitive period of gamete/embryo development and as such may alter cardiovascular development and health of the offspring in postnatal life. In order to identify the association between ARTs and cardiovascular health outcomes, it is important to understand the events that occur during the periconceptional period and how they are affected by procedures involved in ARTs. This review will highlight the emerging evidence implicating adverse cardiovascular outcomes before and after birth in offspring conceived through ARTs in both human and animal studies. In addition, it will identify the potential underlying causes and molecular mechanisms responsible for the congenital and adult cardiovascular dysfunctions in offspring whom were conceived through ARTs.
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Affiliation(s)
- Monalisa Padhee
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, SA 5001, Australia.
| | - Song Zhang
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, SA 5001, Australia.
| | - Shervi Lie
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, SA 5001, Australia.
| | - Kimberley C Wang
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, SA 5001, Australia.
| | - Kimberley J Botting
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, SA 5001, Australia.
| | - I Caroline McMillen
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, SA 5001, Australia.
| | - Severence M MacLaughlin
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, SA 5001, Australia.
| | - Janna L Morrison
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, SA 5001, Australia.
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Bulthuis V, Hanssens P, Lie S, Van Overbeeke J. Gamma Knife Radiosurgery for Intracranial Meningiomas: Do we need to Treat the Dural Tail? Skull Base Surg 2014. [DOI: 10.1055/s-0034-1384023] [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: 10/20/2022]
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Lie S, Morrison JL, Williams-Wyss O, Suter CM, Humphreys DT, Ozanne SE, Zhang S, MacLaughlin SM, Kleemann DO, Walker SK, Roberts CT, McMillen IC. Impact of embryo number and maternal undernutrition around the time of conception on insulin signaling and gluconeogenic factors and microRNAs in the liver of fetal sheep. Am J Physiol Endocrinol Metab 2014; 306:E1013-24. [PMID: 24496309 PMCID: PMC4010656 DOI: 10.1152/ajpendo.00553.2013] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Accepted: 01/29/2014] [Indexed: 01/14/2023]
Abstract
This study aimed to determine whether exposure of the oocyte and/or embryo to maternal undernutrition results in the later programming of insulin action in the liver and factors regulating gluconeogenesis. To do this, we collect livers from singleton and twin fetal sheep that were exposed to periconceptional (PCUN; -60 to 7 days) or preimplantation (PIUN; 0-7 days) undernutrition at 136-138 days of gestation (term = 150 days). The mRNA and protein abundance of insulin signaling and gluconeogenic factors were then quantified using qRT-PCR and Western blotting, respectively, and global microRNA expression was quantified using deep sequencing methodology. We found that hepatic PEPCK-C mRNA (P < 0.01) and protein abundance and the protein abundance of IRS-1 (P < 0.01), p110β (P < 0.05), PTEN (P < 0.05), CREB (P < 0.01), and pCREB (Ser(133); P < 0.05) were decreased in the PCUN and PIUN singletons. In contrast, hepatic protein abundance of IRS-1 (P < 0.01), p85 (P < 0.01), p110β (P < 0.001), PTEN (P < 0.01), Akt2 (P < 0.01), p-Akt (Ser(473); P < 0.01), and p-FOXO-1 (Thr24) (P < 0.01) was increased in twins. There was a decrease in PEPCK-C mRNA (P < 0.01) but, paradoxically, an increase in PEPCK-C protein (P < 0.001) in twins. Both PCUN and PIUN altered the hepatic expression of 23 specific microRNAs. We propose that the differential impact of maternal undernutrition in the presence of one or two embryos on mRNAs and proteins involved in the insulin signaling and gluconeogenesis is explained by changes in the expression of a suite of specific candidate microRNAs.
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Affiliation(s)
- Shervi Lie
- Sansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia, Australia
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Lie S, Hui M, McMillen IC, Muhlhausler BS, Posterino GS, Dunn SL, Wang KC, Botting KJ, Morrison JL. Exposure to rosiglitazone, a PPAR-γ agonist, in late gestation reduces the abundance of factors regulating cardiac metabolism and cardiomyocyte size in the sheep fetus. Am J Physiol Regul Integr Comp Physiol 2014; 306:R429-37. [PMID: 24477540 DOI: 10.1152/ajpregu.00431.2013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
It is unknown whether cardiomyocyte hypertrophy and the transition to fatty acid oxidation as the main source of energy after birth is dependent on the maturation of the cardiomyocytes' metabolic system, or on the limitation of substrate availability before birth. This study aimed to investigate whether intrafetal administration of a peroxisome proliferator-activated receptor-γ (PPAR-γ) agonist, rosiglitazone, during late gestation can stimulate the expression of factors regulating cardiac growth and metabolism in preparation for birth, and the consequences of cardiac contractility in the fetal sheep at ∼140 days gestation. The mRNA expression and protein abundance of key factors regulating growth and metabolism were quantified using quantitative RT-PCR and Western blot analysis, respectively. Cardiac contractility was determined by measuring the Ca(2+) sensitivity and maximum Ca(2+)-activated force of skinned cardiomyocyte bundles. Rosiglitazone-treated fetuses had a lower cardiac abundance of insulin-signaling molecules, including insulin receptor-β, insulin receptor substrate-1 (IRS-1), phospho-IRS-1 (Tyr-895), phosphatidylinositol 3-kinase (PI3K) regulatory subunit p85, PI3K catalytic subunit p110α, phospho-3-phosphoinositide-dependent protein kinase 1 (Ser-241), protein kinase B (Akt-1), phospho-Akt (Ser-273), PKCζ, phospho-PKCζ(Thr-410), Akt substrate 160 kDa (AS160), phospho-AS160 (Thr-642), and glucose transporter type-4. Additionally, cardiac abundance of regulators of fatty acid β-oxidation, including adiponectin receptor 1, AMPKα, phospho-AMPKα (Thr-172), phospho-acetyl CoA carboxylase (Ser-79), carnitine palmitoyltransferase-1, and PGC-1α was lower in the rosiglitazone-treated group. Rosiglitazone administration also resulted in a decrease in cardiomyocyte size. Rosiglitazone administration in the late-gestation sheep fetus resulted in a decreased abundance of factors regulating cardiac glucose uptake, fatty acid β-oxidation, and cardiomyocyte size. These findings suggest that activation of PPAR-γ using rosiglitazone does not promote the maturation of cardiomyocytes; rather, it may decrease cardiac metabolism and compromise cardiac health later in life.
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Affiliation(s)
- Shervi Lie
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, South Australia, Australia; and
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Lie S, Morrison JL, Williams-Wyss O, Suter CM, Humphreys DT, Ozanne SE, Zhang S, Maclaughlin SM, Kleemann DO, Walker SK, Roberts CT, McMillen IC. Periconceptional undernutrition programs changes in insulin-signaling molecules and microRNAs in skeletal muscle in singleton and twin fetal sheep. Biol Reprod 2014; 90:5. [PMID: 24258211 DOI: 10.1095/biolreprod.113.109751] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [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] [Indexed: 01/10/2023] Open
Abstract
Maternal undernutrition around the time of conception is associated with an increased risk of insulin resistance in adulthood. We determined the effect of maternal undernutrition in the periconceptional period (PCUN, i.e., 60 days prior to 6 days after conception) and the preimplantation period (PIUN, i.e., 0-6 days after conception) on mRNA expression and protein abundance of key insulin-signaling molecules as well as the global microRNA expression in quadriceps muscle of singleton and twin fetal sheep in late gestation. In singleton fetuses, exposure to PCUN resulted in lower protein abundance of PIK3CB (P < 0.01), PRKCZ (P < 0.05), and pPRKCZ (Thr410) (P < 0.05) in skeletal muscle compared to controls. In PIUN singletons, there was a higher protein abundance of IRS1 (P < 0.05), PDPK1 (P < 0.05), and SLC2A4 (P < 0.05) compared to controls. In twins, PCUN resulted in higher protein abundance of IRS1 (P < 0.05), AKT2 (P < 0.05), PDPK1 (P < 0.05), and PRKCZ (P < 0.001), while PIUN also resulted in higher protein abundance of IRS1 (P < 0.05), PRKCZ (P < 0.001), and SLC2A4 (P < 0.05) in fetal muscle compared to controls. There were specific patterns of the types and direction of changes in the expression of 22 microRNAs in skeletal muscle after exposure to PCUN or PIUN and clear differences in these patterns between singleton and twin pregnancies. These findings provide evidence that maternal undernutrition around the time of conception induces changes in the expression of microRNAs, which may play a role in altering the abundance of the key insulin-signaling molecules in skeletal muscle and in the association between PCUN undernutrition and insulin resistance in adult life.
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Affiliation(s)
- Shervi Lie
- Sansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia, Australia
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Lie S, Morrison JL, Williams-Wyss O, Ozanne SE, Zhang S, Walker SK, Kleemann DO, MacLaughlin SM, Roberts CT, McMillen IC. Impact of embryo number and periconceptional undernutrition on factors regulating adipogenesis, lipogenesis, and metabolism in adipose tissue in the sheep fetus. Am J Physiol Endocrinol Metab 2013; 305:E931-41. [PMID: 23921136 DOI: 10.1152/ajpendo.00180.2013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Maternal undernutrition around the time of conception is associated with an increased risk of insulin resistance in adulthood. We hypothesized that maternal undernutrition during the periconceptional (PCUN: -60 to 7 days) and/or preimplantation (PIUN: 0-7 days) periods would result in a decrease in UCP1 expression and the abundance of insulin signaling molecules and an increase in the abundance of factors that regulate adipogenesis and lipogenesis in fetal perirenal adipose tissue (PAT) and that these effects would be different in singletons and twins. Maternal PCUN and PIUN resulted in a decrease in UCP1 expression in PAT, and PIUN resulted in higher circulating insulin concentrations, an increased abundance of pPKCζ and PDK4, and a decreased abundance of Akt1, phosphorylated mTOR, and PPARγ in PAT in singleton and twin fetuses. In singletons, there was also a decrease in the abundance of p110β in PAT in the PCUN and PIUN groups and an increase in total AMPKα in PAT in the PIUN group. In twins, however, there was an increase in the abundance of mTOR in the PCUN group and an increase in PDK2 and decrease in total AMPKα in the PIUN group. Thus exposure to periconceptional undernutrition programs changes in the thermogenic capacity and the insulin and fatty acid oxidation signaling pathway in visceral fat, and these effects are different in singletons and twins. These findings are important, as the thermogenic capacity of brown fat and the insulin sensitivity of visceral fat are important determinants of the risk of developing obesity and an insulin resistance phenotype in later life.
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Affiliation(s)
- Shervi Lie
- Sansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia
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Lie S, Duffield JA, McMillen IC, Morrison JL, Ozanne SE, Pilgrim C, Muhlhausler BS. The effect of placental restriction on insulin signaling and lipogenic pathways in omental adipose tissue in the postnatal lamb. J Dev Orig Health Dis 2013; 4:421-9. [PMID: 24970733 DOI: 10.1017/s2040174413000202] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Intrauterine growth restriction (IUGR) followed by accelerated growth after birth is associated with an increased risk of abdominal (visceral) obesity and insulin resistance in adult life. The aim of the present study was to determine the impact of IUGR on mRNA expression and protein abundance of insulin signaling molecules in one of the major visceral fat depots, the omental adipose depot. IUGR was induced by placental restriction, and samples of omental adipose tissue were collected from IUGR (n = 9, 5 males, 4 females) and Control (n = 14, 8 males, 6 females) neonatal lambs at 21 days of age. The mRNA expression of the insulin signaling molecules, AMP-kinase (AMPK) and adipogenic/lipogenic genes was determined by qRT-PCR, and protein abundance by Western Blotting. AMPKα2 mRNA expression was increased in male IUGR lambs (0.015 ± 0.002 v. 0.0075 ± 0.0009, P < 0.001). The proportion of the AMPK pool that was phosphorylated (%P-AMPK) was lower in IUGR lambs compared with Controls independent of sex (39 ± 9% v. 100 ± 18%, P < 0.001). The mRNA expression and protein abundance of insulin signaling proteins and adipogenic/lipogenic genes was not different between groups. Thus, IUGR is associated with sex-specific alterations in the mRNA expression of AMPKα2 and a reduction in the percentage of the total AMPK pool that is phosphorylated in the omental adipose tissue of neonatal lambs, before the onset of visceral obesity. These molecular changes would be expected to promote lipid accumulation in the omental adipose depot and may therefore contribute to the onset of visceral adiposity in IUGR animals later in life.
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Affiliation(s)
- S Lie
- 1 Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, The University of South Australia, Adelaide, Australia
| | - J A Duffield
- 1 Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, The University of South Australia, Adelaide, Australia
| | - I C McMillen
- 1 Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, The University of South Australia, Adelaide, Australia
| | - J L Morrison
- 1 Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, The University of South Australia, Adelaide, Australia
| | - S E Ozanne
- 2 Metabolic Research Laboratories, Institute of Metabolic Science, University of Cambridge, Cambridge, UK
| | - C Pilgrim
- 2 Metabolic Research Laboratories, Institute of Metabolic Science, University of Cambridge, Cambridge, UK
| | - B S Muhlhausler
- 1 Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, The University of South Australia, Adelaide, Australia
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Haukeli AD, Lie S. EFFECT OF LIPIDS AND OXYGEN ON YEAST GROWTH AND THE BIOSYNTHESIS OF ACETOIN DURING FERMENTATION. Journal of the Institute of Brewing 2013. [DOI: 10.1002/j.2050-0416.1976.tb03742.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Harris A, Marquis P, Eriksen H, Grant I, Corbett R, Lie S, Ursin H. Diurnal rhythm in British Antarctic personnel. Rural Remote Health 2010. [DOI: 10.22605/rrh1351] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Lie S, Stolba U, Goll A, Janowitz S, Binder S. Intravitreales Triamcinolonacetonid und intraokularer Druck: Vergleich mit dem Partnerauge nach Applikation vehikelfreier Lösung. Spektrum Augenheilkd 2010. [DOI: 10.1007/s00717-010-0388-8] [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: 10/19/2022]
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Zeiler F, Považay B, Glittenberg C, Hermann B, Hagen S, Lie S, Drexler W, Binder S. Comparison of UHR-OCT versus Stratus-OCT for definition of early retinal changes after intravitreal Bevacizumab (Avastin®) application in patients with AMD. Spektrum Augenheilkd 2009. [DOI: 10.1007/s00717-009-0313-1] [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: 11/30/2022]
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Førde R, Lie S, Aasland OG. [A course in medical ethics--a pain in the neck for the clinicians?]. Tidsskr Nor Laegeforen 1997; 117:1138-40. [PMID: 9148483] [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: 02/04/2023] Open
Abstract
Last year, a course in clinical medical ethics for paediatricians had to be cancelled owing to lack of interest. To find the reason for this, and to learn what ethical problems the physicians encountered in the course of their work, how they solved them, and their attitude towards education in medical ethics, a questionnaire was sent to all members of The Norwegian Paediatric Association, to be answered anonymously. The most frequent excuses for not attending the course were pressure of work and lack of time. 37% claimed that they very often or often encountered ethical problems during their work. 20% often solved these problems alone, and two out of three after discussing them with colleagues. 51% felt a need to improve their competence to solve ethical problems. Only 16% reported having no such need. The authors discuss the form and content of the education in medical ethics.
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Affiliation(s)
- R Førde
- Legeforeningens forskningsinstitutt, Oslo
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Pun YL, Moskowitz RW, Lie S, Sundstrom WR, Block SR, McEwen C, Williams HJ, Bleasel JF, Holderbaum D, Haqqi TM. Clinical correlations of osteoarthritis associated with a single-base mutation (arginine519 to cysteine) in type II procollagen gene. A newly defined pathogenesis. Arthritis Rheum 1994; 37:264-9. [PMID: 8129781 DOI: 10.1002/art.1780370216] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
OBJECTIVE To investigate the occurrence and clinical correlation of the arg519-to-cys mutation in the type II procollagen gene in patients with osteoarthritis (OA). METHODS Sixty-six subjects from 7 families with a strong family history of generalized OA and 13 patients with erosive OA were evaluated clinically and radiologically. Blood samples from 58 subjects in the familial OA group and from all 13 patients with erosive OA were obtained for DNA analysis. Exon 31 of COL2A1, which spans residue 519, was amplified by polymerase chain reaction. RESULTS The arg519-to-cys mutation was detected in 2 of the 7 families with generalized OA. In these 2 families, the mutation was present in the 2 probands and in 19 other clinically affected family members, as well as in 3 (so-far) clinically unaffected family members (ages 25, 14, and 11 years). It was absent in 18 clinically unaffected members tested. The mutation was associated with a distinctive pattern of early-onset, aggressive, generalized OA with a mild spinal chondrodysplasia. Inheritance was autosomal dominant. No mutation was found in any of the patients with erosive OA. CONCLUSION The arg519-to-cys mutation defines a new pathogenic factor in generalized OA with characteristic clinical and radiologic features. The demonstration of a mutation in 3 of 8 families with OA studied thus far suggests a significant incidence of genetically related clinical OA.
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Affiliation(s)
- Y L Pun
- Department of Medicine, Case Western Reserve University, Cleveland, OH
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Lie S. USE OF FILTER PAPERS IN MALT ANALYSIS. Journal of the Institute of Brewing 1993. [DOI: 10.1002/j.2050-0416.1993.tb01141.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Franceschi D, Crowe JP, Lie S, Duchesneau R, Zollinger R, Shenk R, Stefanek G, Shuck JM. Not all nonpalpable breast cancers are alike. Arch Surg 1991; 126:967-70; discussion 970-1. [PMID: 1650548 DOI: 10.1001/archsurg.1991.01410320049005] [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] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Clinical and mammographic data of 1009 consecutive patients were correlated with histopathologic data of 1144 biopsy specimens of nonpalpable breast lesions to better define the presentation and biologic behavior of early breast cancer. Patients with malignant neoplasms (269 [24%] of 1144 specimens) were older (mean age, 62.1 years) than patients with benign lesions (mean age, 54.9 years). Furthermore, patients with invasive disease were older (mean age, 63.3 years) than patients with noninvasive disease (mean age, 58.5 years) with an overall increased risk of invasive cancer per year of 1.035. A 58% incidence of invasive cancer was detected for lesions characterized by calcifications, while the incidence of invasive cancer was 84% for isolated mass lesions (relative risk, 4.31 for masses). Isolated mammographic calcifications associated with cancer appeared in a younger population and were significantly associated with noninvasive ductal cancer. Breast cancer presenting as a mammographic mass appeared in an older group and was highly associated with the presence of invasive disease.
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Stray-Pedersen B, Solberg VM, Torkildsen E, Lie S, Velken M, Aaserud J, Kierulf KA, Blakstad M, Ulshagen K, Sandstad B. Postpartum bacteriuria. A multicenter evaluation of different screening procedures and a controlled short-course treatment trial with amoxycillin. Eur J Obstet Gynecol Reprod Biol 1989; 31:163-71. [PMID: 2668060 DOI: 10.1016/0028-2243(89)90177-9] [Citation(s) in RCA: 68] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A total of 10,909 puerperal women from 6 different hospitals were screened for bacteriuria by culture of voided midstream urine (MSU), and a significant growth was found in 881 patients (8.1%). In 731 cases the urine was reexamined by using suprapubic aspiration (SPA), and in only 354 (48%) of the samples the diagnosis of bacteriuria was confirmed. The contamination rate of the MSU samples varied from 46 to 69% between the different hospitals, indicating that in the postpartum period positive MSU findings would necessitate more thorough examination in order to confirm the diagnosis of urinary tract infection. In our study, suprapubic aspiration was found to be a simple and acceptable method without any side effects. Confirmed bacteriuria occurred in 3.2% of the women. Operative delivery (Cesarean section, forceps and vacuum extractor delivery), epidural anesthesia and bladder catheterization increased the risk of bacteriuria in the postpartum period. Only 27% of the women with positive bladder urine complained of dysuria and this symptom was significantly more common in women who had been catheterized. 230 patients with confirmed bacteriuria with amoxycillin-sensitive bacterias participated in a randomized short-course treatment trial: 114 women received 3 days treatment with amoxycillin (1.5 g/day), 116 received the traditional 10 days therapy (750 mg amoxycillin/day). Both antibiotic regimens were observed to be effective with a cure rate of 96 and 98%, respectively. Short-course antibiotic treatment should thus be recommended to puerperal women with urinary tract infections since this avoids prolonged drug exposure to the lactating mother.
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Ulstein M, Svendsen E, Steier A, Bratt H, Fylling P, Lie S, Schiefloe A, Aaserud J. Clinical experience with a triphasic oral contraceptive. Acta Obstet Gynecol Scand 1984; 63:233-6. [PMID: 6428157 DOI: 10.3109/00016348409155503] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A triphasic combined oral contraceptive containing fluctuating amounts of ethinylestradiol and levonorgestrel was tested clinically in a multicenter trial at six hospitals in Norway. 367 women were included in the study, 3 588 cycles were studied, and the follow up period was 12 months. The one year continuation rate was 67%. Five pregnancies occurred during the study period. All of them had to be considered as patient failures. The causes for stopping medication were side effects in about 50% and the rest for personal reasons. The cycle control taking into account duration of bleeding, amount of flow, and intermenstrual bleeding was good and comparable to the low-dose monophasic combined pills. The incidence of side effects was low. One woman had an increase in systolic blood pressure to more than 140 mmHg. Thrombophlebitis was not registered. In conclusion the triphasic oral contraceptive was effective and had a good cycle control and low incidence of side effects.
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Funderud S, Lindmo T, Ruud E, Marton PF, Langholm R, Elgjo RF, Vaage S, Lie S, Godal T. Delineation of subsets in human B-cell lymphomas by a set of monoclonal antibodies raised against B lymphoma cells. Scand J Immunol 1983; 17:161-9. [PMID: 6601289 DOI: 10.1111/j.1365-3083.1983.tb00779.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Murine hybridoma antibodies to a human B-cell lymphoma were developed. After screening against normal T cells, monocytes, and granulocytes 11 antibodies that reacted with cells from other B-cell lymphomas remained, of which 10 showed individually distinct staining patterns, as tested by indirect fluorescence. When tested against lymphomas or cell lines, none of these antibodies revealed staining patterns suggesting reactivity with conventional B-cell surface markers, such as immunoglobulin, complement factor 3 receptors, or HLA-DR antigens. Only one of the antibodies (GB1) reacted with human serum, as determined by a blocking assay. The antibodies were found to belong to different immunoglobulin isotypes. Two antibodies (GB13 and GB14) reacted with greater than 5% of normal peripheral blood mononuclear cells. These reactions were mainly due to reactivity with B cells. The antibodies reacted only in a few cases with acute leukaemias, B-cell lines, and follicular lymphomas. On the other hand, distinct patterns of reactivity in different histological groups of diffuse lymphomas were obtained, suggesting that the antibodies may be useful in delineating phenotypic subsets among human B-cell lymphomas.
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Masucci MG, Szigeti R, Ernberg I, Masucci G, Klein G, Chessels J, Sieff C, Lie S, Glomstein A, Businco L, Henle W, Henle G, Pearson G, Sakamoto K, Purtilo DT. Cellular immune defects to Epstein-Barr virus-determined antigens in young males. Cancer Res 1981; 41:4284-91. [PMID: 6171337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Three males with the X-linked lymphoproliferative syndrome (XLP) with hypo- or agammaglobulinemia following Epstein-Barr virus (EBV) infection and two males with the chronic mononucleosis syndrome were investigated for immune responses to EBV-determined antigens. Males with XLP showed profound cellular immune defects. Markedly diminished responses of natural killer cell and interferon-activated killer cell activities and impaired leukocyte migration inhibition responses to phytohemagglutinin were determined in patients with XLP. The two patients with chronic mononucleosis showed less severe defects. All patients showed partial or complete impairment of their EBV-specific immune responses as measured by leukocyte migration inhibition. EBV-specific antibodies were markedly diminished against EBV-associated nuclear antigen, early antigen, and viral capsid antigen in males with XLP. In contrast, patients with chronic mononucleosis had elevated antibodies to most EBV-specific antigens. Individuals with life-threatening EBV-induced lymphoproliferative disorders may exhibit multiple defective immune mechanisms against the virus.
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Ohmori Y, Nakano R, Lie S, Imura H, Shimbo S. [A radioreceptor assay for catecholamines. II. A study with 4-(2-iodoethyl) pyrocatechol (author's transl)]. Nihon Naibunpi Gakkai Zasshi 1980; 56:983-92. [PMID: 6109644 DOI: 10.1507/endocrine1927.56.7_983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
We have already reported on a radioreceptor assay for catecholamines utilizing the microsome fraction of bovine myocardium as a catecholamine (CA) receptor and 3H-norepinephrine as a labelled CA. In order to increase the sensitivity of the radioreceptor assay, we used 4-(2-iodoethyl) pyrocatechol (125I-CA) as a ligand instead of 3H-norepinephrine and performed a radioreceptor assay for CA. The following results were obtained: 1) 125I-CA was able to bind alpha-receptors prepared from bovine myocardium. 2) The optimal amount of the microsomal fraction was 250 micrograms/tube, when 125I-CA of 50,000 c.p.m. was used. The appropriate conditions for incubation were 90 minutes at 20 degrees C in a pH 7.0 sucrose solution. 3) By this method utilizing 125I-CA, norepinephrine was detectable in a range from 500 pg to 10 ng/tube. 4) Various compounds with a catechol nucleus showed cross-reaction in this radioreceptor assay system. 5) Whereas beta-adrenergic blocking agents did not inhibit the binding of 125I-CA, phentolamine, a short acting type of alpha-adrenergic blocking agents, was effective in inhibiting the binding. However, dibenamine and phenoxybenzamine, long acting types of alpha-adrenergic blocking agents, increased the binding of 125I-CA to the microsomal fraction. 6) Utilizing this phenomenon, norepinephrine was detectable in the range from 100 pg to 5 ng/tube.
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Thorsby E, Lie S. Antigens on Human Fibroblasts Demonstrated with HL-A
Antisera and Anti-Human Lymphocytic Sera. Vox Sang 1968. [DOI: 10.1159/000467033] [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: 11/19/2022]
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Lie S, Lystad A. [Transportation of urine specimens. Effect on results of bacteriological examinations]. Tidsskr Nor Laegeforen 1967; 87:1913-5. [PMID: 5590459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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Lie S, Aamold J. [Bacteriuria as a problem in a small general hospital]. Tidsskr Nor Laegeforen 1967; 87:1896-900. [PMID: 5590454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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Bolinder AE, Lie S, Ericson LE. Plate assay methods for amino acids. Acta Pharm Suec 1966; 3:363-75. [PMID: 4962775] [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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