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Schiuma G, Lara D, Clement J, Narducci M, Rizzo R. NADH: the redox sensor in aging-related disorders. Antioxid Redox Signal 2024. [PMID: 38366731 DOI: 10.1089/ars.2023.0375] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/18/2024]
Abstract
SIGNIFICANCE NADH represents the reduced form of NAD+, and together they constitute the two forms of the Nicotinamide adenine dinucleotide whose balance is named as the NAD+/NADH ratio. NAD+/NADH ratio is mainly involved in redox reactions since both the molecules are responsible for carrying electrons to maintain redox homeostasis. NADH acts as a reducing agent and one of the most known processes exploiting NADH function is energy metabolism. The two main pathways generating energy and involving NADH are Glycolysis and Oxidative phosphorylation, occurring in cell cytosol and in the mitochondrial matrix, respectively. RECENT ADVANCES Although NADH is primarily produced through the reduction of NAD+ and consumed by its own oxidation, several are the biosynthetic and consumption pathways, reflecting the NADH role in multiple cellular processes. CRITICAL ISSUES This review gathers all the main current data referring to NADH in correlation with metabolic and cellular pathways, such as its coenzyme activity, effect in cell death and on modulating redox and calcium homeostasis. Data were selected following eligibility criteria accordingly to the reviewed topic. A set of electronic databases (Medline/PubMed, Scopus, Web of Sciences (WOS), Cochrane Library) have been used for a systematic search until January 2024 using MeSH keywords/terms (i.e., NADH, NAD+/NADH and NADH/NAD+ ratio, redox homeostasis, energy metabolism, aging, aging-related disorders, therapies). FUTURE DIRECTION Gene expression control, as well as to the potential impact on neurodegenerative, cardiac disorders and infections suggest NADH application in clinical settings.
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Affiliation(s)
| | - Djidjell Lara
- University of Ferrara, 9299, Ferrara, FE, Italy
- BetterHumans, Gainesville, Florida, United States;
| | - James Clement
- Betterhumans Inc., Gainesville, Florida, United States
- University of Ferrara, 9299, Ferrara, FE, Italy;
| | - Marco Narducci
- University of Ferrara, 9299, Ferrara, FE, Italy
- BetterHumans, Gainesville, Florida, United States
- Temple University Japan Campus, 83908, Minato-ku, Tokyo, Japan;
| | - Roberta Rizzo
- University of Ferrara, 9299, Via Luigi Borsari 46, Ferrara, Ferrara, FE, Italy, 44121;
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Arockiaraj M, Paul D, Clement J, Tigga S, Jacob K, Balasubramanian K. Novel molecular hybrid geometric-harmonic-Zagreb degree based descriptors and their efficacy in QSPR studies of polycyclic aromatic hydrocarbons. SAR QSAR Environ Res 2023; 34:569-589. [PMID: 37538006 DOI: 10.1080/1062936x.2023.2239149] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 07/16/2023] [Indexed: 08/05/2023]
Abstract
The physicochemical characteristics of polycyclic aromatic compounds critical to environmental modelling such as octanol partition coefficients, solubility, lipophilicity, polarity and several equilibrium constants are functions of their underlying molecular structures, prompting the development of mathematical models to predict such characteristics for which experimental results are difficult to obtain. We propose twelve novel descriptors derived from geometric, harmonic and Zagreb degree-based descriptors and then test the effectiveness of these descriptors on a data set consisting of 55 benzenoid hydrocarbons of environmental importance. Our computations show that the proposed descriptors have a good linear correlation and predictive power when compared to the degree and distance type descriptors. We have also derived the QSPR expressions for four properties of a large series of polycyclic aromatics arising from circumscribing coronenes and show that a scaling factor can be deduced to derive physicochemical properties of such series up to 2D graphene sheets.
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Affiliation(s)
- M Arockiaraj
- Department of Mathematics, Loyola College, Chennai, India
| | - D Paul
- Department of Mathematics, Sri Sairam Institute of Technology, Chennai, India
| | - J Clement
- Department of Mathematics, School of Advanced Sciences, Vellore Institute of Technology, Vellore, India
| | - S Tigga
- Department of Mathematics, Loyola College, Chennai, India
| | - K Jacob
- Department of Mathematics, School of Advanced Sciences, Vellore Institute of Technology, Vellore, India
| | - K Balasubramanian
- School of Molecular Sciences, Arizona State University, Tempe, AZ, USA
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Dec E, Clement J, Cheng K, Church GM, Fossel MB, Rehkopf DH, Rosero-Bixby L, Kobor MS, Lin DT, Lu AT, Fei Z, Guo W, Chew YC, Yang X, Putra SED, Reiner AP, Correa A, Vilalta A, Pirazzini C, Passarino G, Monti D, Arosio B, Garagnani P, Franceschi C, Horvath S. Centenarian clocks: epigenetic clocks for validating claims of exceptional longevity. GeroScience 2023:10.1007/s11357-023-00731-7. [PMID: 36964402 PMCID: PMC10400760 DOI: 10.1007/s11357-023-00731-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 01/09/2023] [Indexed: 03/26/2023] Open
Abstract
Claims surrounding exceptional longevity are sometimes disputed or dismissed for lack of credible evidence. Here, we present three DNA methylation-based age estimators (epigenetic clocks) for verifying age claims of centenarians. The three centenarian clocks were developed based on n = 7039 blood and saliva samples from individuals older than 40, including n = 184 samples from centenarians, 122 samples from semi-supercentenarians (aged 105 +), and 25 samples from supercentenarians (aged 110 +). The oldest individual was 115 years old. Our most accurate centenarian clock resulted from applying a neural network model to a training set composed of individuals older than 40. An epigenome-wide association study of age in different age groups revealed that age effects in young individuals (age < 40) are correlated (r = 0.55) with age effects in old individuals (age > 90). We present a chromatin state analysis of age effects in centenarians. The centenarian clocks are expected to be useful for validating claims surrounding exceptional old age.
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Affiliation(s)
- Eric Dec
- Department of Pediatrics, Division of Genetics and Genomic Medicine, University of California, Irvine, USA.
| | - James Clement
- Betterhumans Inc., Gainesville, FL, USA
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Ferrara, Italy
| | - Kaiyang Cheng
- Medical Informatics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - George M Church
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA, USA
| | | | - David H Rehkopf
- Epidemiology & Population Health and Medicine, School of Medicine, Stanford University, Stanford, CA, USA
| | - Luis Rosero-Bixby
- Centro Centroamericano de Población, Universidad de Costa Rica, San Pedro, Costa Rica
| | - Michael S Kobor
- Edwin S.H. Leong Healthy Aging Program, Centre for Molecular Medicine and Therapeutics, University of British Columbia, Vancouver, BC, Canada
| | - David Ts Lin
- Edwin S.H. Leong Healthy Aging Program, Centre for Molecular Medicine and Therapeutics, University of British Columbia, Vancouver, BC, Canada
| | - Ake T Lu
- Dept. of Human Genetics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
- Altos Labs, San Diego, CA, USA
| | - Zhe Fei
- Dept. of Biostatistics, Fielding School of Public Health, University of California Los Angeles, Los Angeles, CA, USA
| | - Wei Guo
- Zymo Research Corp, Irvine, CA, USA
| | | | | | - Sulistyo E Dwi Putra
- Department of Biology, Faculty of Biotechnology, University of Surabaya, Surabaya, 60293, Indonesia
| | - Alex P Reiner
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - Adolfo Correa
- Medicine and Population Health Science, University of Mississippi Medical Center, Jackson, USA
| | | | - Chiara Pirazzini
- IRCCS Istituto Delle Scienze Neurologiche Di Bologna, Bologna, Italy
| | - Giuseppe Passarino
- Department of Biology Ecology and Earth Science, University of Calabria, Rende, Italy
| | - Daniela Monti
- Department of Experimental and Clinical, Biomedical Sciences "Mario Serio" University of Florence, Florence, Italy
| | - Beatrice Arosio
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Paolo Garagnani
- Department of Medical and Surgical Sciences, University of Bologna, 40126, Bologna, Italy
- Alma Mater Research Institute On Global Challenges and Climate Change (Alma Climate), University of Bologna, Bologna, Italy
- Department of Laboratory Medicine, Clinical Chemistry, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
- CNR Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza", Unit of Bologna, Bologna, Italy
| | - Claudio Franceschi
- Department of Medical and Surgical Sciences, University of Bologna, 40126, Bologna, Italy
- Institute of Information Technologies, Mathematics and Mechanics, Lobachevsky State University, Nizhny Novgorod, Russia
| | - Steve Horvath
- Dept. of Human Genetics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA.
- Altos Labs, San Diego, CA, USA.
- Dept. of Biostatistics, Fielding School of Public Health, University of California Los Angeles, Los Angeles, CA, USA.
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Clement J, Yan Q, Agrawal M, Coronado RE, Sturges JA, Horvath M, Lu AT, Brooke RT, Horvath S. Umbilical cord plasma concentrate has beneficial effects on DNA methylation GrimAge and human clinical biomarkers. Aging Cell 2022; 21:e13696. [PMID: 36052758 PMCID: PMC9577957 DOI: 10.1111/acel.13696] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 06/16/2022] [Accepted: 07/04/2022] [Indexed: 01/25/2023] Open
Abstract
Plasma transfusions are standard treatments to replace missing proteins in people with rare genetic diseases. Prior studies have demonstrated that heterochronic parabiosis has beneficial effects on several tissues of old animals receiving young blood. Human clinical trials are currently underway to investigate whether the infusion of plasma or plasma-derived factors from young donors can be used to mitigate human age-related conditions. Here, we use data from a safety study (n = 18, mean age 74) to investigate whether human umbilical cord plasma concentrate (hereinafter Plasma Concentrate) injected weekly (1 ml intramuscular) into elderly human subjects over a 10-week period affects different biomarkers, including epigenetic age measures, standard clinical biomarkers of organ dysfunction, mitochondrial DNA copy number (mtDNA-CN), and leukocyte telomere length. This study shows that treatment with plasma concentrate is safe. More than 20 clinical biomarkers were significantly and beneficially altered following the treatments. For example, creatinine was significantly decreased (p = 0.0039), while estimated glomerular filtration rate (eGFR) was increased (p = 0.0044), indicating the treatment may improve biomarkers of kidney function. Three of four immunoglobulin biomarkers decreased, while telomere length and mtDNA-CN were not significantly affected by the treatment. The treatment reduced DNA methylation-based GrimAge by an average of 0.82 years (p = 0.0093), suggests a reduction in morbidity and mortality risk. By contrast, no significant results could be observed for epigenetic clocks that estimate chronological age. Our results support the view that plasma concentrate contains youth-promoting factors.
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Affiliation(s)
- James Clement
- Betterhumans Inc.GainesvilleFloridaUSA,Department of Chemical, Pharmaceutical and Agricultural SciencesUniversity of FerraraFerraraItaly
| | - Qi Yan
- Epigenetic Clock Development FoundationTorranceCaliforniaUSA
| | | | - Ramon E. Coronado
- Transplant Department, UT Health San AntonioSan AntonioTexasUSA,Department of Obstetrics and GynecologyBaylor College of MedicineHoustonTexasUSA,Signature BiologicsIrvingTexasUSA,Crown ScientificSan AntonioTexasUSA
| | | | - Markus Horvath
- Epigenetic Clock Development FoundationTorranceCaliforniaUSA
| | - Ake T. Lu
- Department of Human Genetics, David Geffen School of MedicineUniversity of CaliforniaLos AngelesCaliforniaUSA,Altos LabsSan DiegoUSA
| | | | - Steve Horvath
- Department of Human Genetics, David Geffen School of MedicineUniversity of CaliforniaLos AngelesCaliforniaUSA,Department of Biostatistics, Fielding School of Public HealthUniversity of CaliforniaLos AngelesCaliforniaUSA
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Klein EA, Richards D, Cohn A, Tummala M, Lapham R, Cosgrove D, Chung G, Clement J, Gao J, Hunkapiller N, Jamshidi A, Kurtzman KN, Seiden MV, Swanton C, Liu MC. Clinical validation of a targeted methylation-based multi-cancer early detection test using an independent validation set. Ann Oncol 2021; 32:1167-1177. [PMID: 34176681 DOI: 10.1016/j.annonc.2021.05.806] [Citation(s) in RCA: 301] [Impact Index Per Article: 100.3] [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: 05/19/2021] [Revised: 05/27/2021] [Accepted: 05/30/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND A multi-cancer early detection (MCED) test used to complement existing screening could increase the number of cancers detected through population screening, potentially improving clinical outcomes. The Circulating Cell-free Genome Atlas study (CCGA; NCT02889978) was a prospective, case-controlled, observational study and demonstrated that a blood-based MCED test utilizing cell-free DNA (cfDNA) sequencing in combination with machine learning could detect cancer signals across multiple cancer types and predict cancer signal origin (CSO) with high accuracy. The objective of this third and final CCGA substudy was to validate an MCED test version further refined for use as a screening tool. PATIENTS AND METHODS This pre-specified substudy included 4077 participants in an independent validation set (cancer: n = 2823; non-cancer: n = 1254, non-cancer status confirmed at year-one follow-up). Specificity, sensitivity, and CSO prediction accuracy were measured. RESULTS Specificity for cancer signal detection was 99.5% [95% confidence interval (CI): 99.0% to 99.8%]. Overall sensitivity for cancer signal detection was 51.5% (49.6% to 53.3%); sensitivity increased with stage [stage I: 16.8% (14.5% to 19.5%), stage II: 40.4% (36.8% to 44.1%), stage III: 77.0% (73.4% to 80.3%), stage IV: 90.1% (87.5% to 92.2%)]. Stage I-III sensitivity was 67.6% (64.4% to 70.6%) in 12 pre-specified cancers that account for approximately two-thirds of annual USA cancer deaths and was 40.7% (38.7% to 42.9%) in all cancers. Cancer signals were detected across >50 cancer types. Overall accuracy of CSO prediction in true positives was 88.7% (87.0% to 90.2%). CONCLUSION In this pre-specified, large-scale, clinical validation substudy, the MCED test demonstrated high specificity and accuracy of CSO prediction and detected cancer signals across a wide diversity of cancers. These results support the feasibility of this blood-based MCED test as a complement to existing single-cancer screening tests. CLINICAL TRIAL NUMBER NCT02889978.
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Affiliation(s)
- E A Klein
- Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, USA.
| | | | - A Cohn
- The US Oncology Network, Denver, USA
| | - M Tummala
- Mercy Clinic Cancer Center, Springfield, USA
| | - R Lapham
- Spartanburg Regional Healthcare System, Spartanburg, USA
| | | | - G Chung
- The Christ Hospital Health Network, Cincinnati, USA
| | - J Clement
- Hartford HealthCare Cancer Institute, Hartford, USA
| | - J Gao
- GRAIL, Inc., Menlo Park, USA
| | | | | | | | - M V Seiden
- US Oncology Research, The Woodlands, USA
| | - C Swanton
- The Francis Crick Institute, London, UK; University College London Cancer Institute, London, UK
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Grohn KJ, Moyer BS, Wortel DC, Fisher CM, Lumen E, Bianchi AH, Kelly K, Campbell PS, Hagrman DE, Bagg RG, Clement J, Wolfe AJ, Basso A, Nicoletti C, Lai G, Provinciali M, Malavolta M, Moody KJ. C 60 in olive oil causes light-dependent toxicity and does not extend lifespan in mice. GeroScience 2021; 43:579-591. [PMID: 33123847 PMCID: PMC8110650 DOI: 10.1007/s11357-020-00292-z] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Accepted: 10/22/2020] [Indexed: 10/23/2022] Open
Abstract
C60 is a potent antioxidant that has been reported to substantially extend the lifespan of rodents when formulated in olive oil (C60-OO) or extra virgin olive oil (C60-EVOO). Despite there being no regulated form of C60-OO, people have begun obtaining it from online sources and dosing it to themselves or their pets, presumably with the assumption of safety and efficacy. In this study, we obtain C60-OO from a sample of online vendors, and find marked discrepancies in appearance, impurity profile, concentration, and activity relative to pristine C60-OO formulated in-house. We additionally find that pristine C60-OO causes no acute toxicity in a rodent model but does form toxic species that can cause significant morbidity and mortality in mice in under 2 weeks when exposed to light levels consistent with ambient light. Intraperitoneal injections of C60-OO did not affect the lifespan of CB6F1 female mice. Finally, we conduct a lifespan and health span study in males and females C57BL/6 J mice comparing oral treatment with pristine C60-EVOO and EVOO alone versus untreated controls. We failed to observe significant lifespan and health span benefits of C60-EVOO or EVOO supplementation compared to untreated controls, both starting the treatment in adult or old age. Our results call into question the biological benefit of C60-OO in aging.
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Affiliation(s)
- Kristopher J Grohn
- Ichor Therapeutics, Inc., 2521 US Route 11, LaFayette, NY, 13084, USA
- Department of Chemistry, College of Environmental Science and Forestry, State University of New York, Syracuse, NY, 13210, USA
| | - Brandon S Moyer
- Ichor Therapeutics, Inc., 2521 US Route 11, LaFayette, NY, 13084, USA
| | - Danique C Wortel
- Ichor Therapeutics, Inc., 2521 US Route 11, LaFayette, NY, 13084, USA
| | - Cheyanne M Fisher
- Ichor Therapeutics, Inc., 2521 US Route 11, LaFayette, NY, 13084, USA
| | - Ellie Lumen
- Ichor Therapeutics, Inc., 2521 US Route 11, LaFayette, NY, 13084, USA
- Betterhumans Inc., Gainesville, FL, USA
| | - Anthony H Bianchi
- Ichor Therapeutics, Inc., 2521 US Route 11, LaFayette, NY, 13084, USA
| | - Kathleen Kelly
- Ichor Therapeutics, Inc., 2521 US Route 11, LaFayette, NY, 13084, USA
| | - Paul S Campbell
- Ichor Therapeutics, Inc., 2521 US Route 11, LaFayette, NY, 13084, USA
| | - Douglas E Hagrman
- Department of Chemistry and Physical Sciences, State University of New York, Onondaga Community College, Syracuse, NY, 13215, USA
| | - Roger G Bagg
- BioSenex, Ltd., Lyndhurst, 1 Cranmer Street, Nottingham, Nottinghamshire, NG10 1NJ, UK
| | | | - Aaron J Wolfe
- Ichor Therapeutics, Inc., 2521 US Route 11, LaFayette, NY, 13084, USA
| | - Andrea Basso
- Advanced Technology Center for Aging Research, IRCCS INRCA, via Birarelli 8, 60121, Ancona, Italy
| | - Cristina Nicoletti
- Advanced Technology Center for Aging Research, IRCCS INRCA, via Birarelli 8, 60121, Ancona, Italy
| | - Giovanni Lai
- Advanced Technology Center for Aging Research, IRCCS INRCA, via Birarelli 8, 60121, Ancona, Italy
| | - Mauro Provinciali
- Advanced Technology Center for Aging Research, IRCCS INRCA, via Birarelli 8, 60121, Ancona, Italy
| | - Marco Malavolta
- Advanced Technology Center for Aging Research, IRCCS INRCA, via Birarelli 8, 60121, Ancona, Italy.
| | - Kelsey J Moody
- Ichor Therapeutics, Inc., 2521 US Route 11, LaFayette, NY, 13084, USA
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Chiavellini P, Canatelli-Mallat M, Lehmann M, Gallardo MD, Herenu CB, Cordeiro JL, Clement J, Goya RG. Aging and rejuvenation - a modular epigenome model. Aging (Albany NY) 2021; 13:4734-4746. [PMID: 33627519 PMCID: PMC7950254 DOI: 10.18632/aging.202712] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 11/30/2020] [Accepted: 02/08/2021] [Indexed: 12/21/2022]
Abstract
The view of aging has evolved in parallel with the advances in biomedical sciences. Long considered as an irreversible process where interventions were only aimed at slowing down its progression, breakthrough discoveries like animal cloning and cell reprogramming have deeply changed our understanding of postnatal development, giving rise to the emerging view that the epigenome is the driver of aging. The idea was significantly strengthened by the converging discovery that DNA methylation (DNAm) at specific CpG sites could be used as a highly accurate biomarker of age defined by an algorithm known as the Horvath clock. It was at this point where epigenetic rejuvenation came into play as a strategy to reveal to what extent biological age can be set back by making the clock tick backwards. Initial evidence suggests that when the clock is forced to tick backwards in vivo, it is only able to drag the phenotype to a partially rejuvenated condition. In order to explain the results, a bimodular epigenome is proposed, where module A represents the DNAm clock component and module B the remainder of the epigenome. Epigenetic rejuvenation seems to hold the key to arresting or even reversing organismal aging.
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Affiliation(s)
- Priscila Chiavellini
- Institute for Biochemical Research (INIBIOLP) - Histology B and Pathology B, School of Medicine, National University of La Plata, La Plata, Argentina
| | - Martina Canatelli-Mallat
- Institute for Biochemical Research (INIBIOLP) - Histology B and Pathology B, School of Medicine, National University of La Plata, La Plata, Argentina
| | - Marianne Lehmann
- Institute for Biochemical Research (INIBIOLP) - Histology B and Pathology B, School of Medicine, National University of La Plata, La Plata, Argentina
| | - Maria D Gallardo
- Institute for Biochemical Research (INIBIOLP) - Histology B and Pathology B, School of Medicine, National University of La Plata, La Plata, Argentina
| | - Claudia B Herenu
- Institute for Experimental Pharmacology (IFEC), School of Chemical Sciences, National University of Cordoba, Cordoba, Argentina
| | - Jose L Cordeiro
- World Academy of Art and Science (WAAS), Napa, CA 94558, USA
| | | | - Rodolfo G Goya
- Institute for Biochemical Research (INIBIOLP) - Histology B and Pathology B, School of Medicine, National University of La Plata, La Plata, Argentina
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Atanasova V, Tiefenbacher A, Clement J, Wöran K, Bergmann M, Dolznig H, Egger G. 482P Identification of proteome and secretome signatures in primary colorectal cancer associated fibroblasts. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.593] [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: 10/23/2022] Open
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Arockiaraj M, Clement J, Tratnik N, Mushtaq S, Balasubramanian K. Weighted Mostar indices as measures of molecular peripheral shapes with applications to graphene, graphyne and graphdiyne nanoribbons. SAR QSAR Environ Res 2020; 31:187-208. [PMID: 31960721 DOI: 10.1080/1062936x.2019.1708459] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 12/19/2019] [Indexed: 06/10/2023]
Abstract
In this study we consider relatively new bond-additive Mostar indices that appear to provide quantitative measures of peripheral shapes of molecules. We have computed weighted Mostar, edge-Mostar and total-Mostar indices of graphene, [Formula: see text]-types of graphyne and graphdiyne, which are of considerable interest owing to their novel properties and thus find applications in a number of areas such as sensors, catalysis, chemisorption and nanomedicine. We have implemented the results to analyse the weighted Mostar indices and have obtained exact analytical expressions for the title molecules. We propose that Mostar indices together with frontier molecular orbitals, and HOMO-LUMO gaps can provide measures of chemical reactivity and analysis of peripheral molecular shapes.
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Affiliation(s)
- M Arockiaraj
- Department of Mathematics, Loyola College, Chennai, India
| | - J Clement
- Department of Mathematics, St. Joseph's College of Engineering, Chennai, India
| | - N Tratnik
- Faculty of Education, University of Maribor, Maribor, Slovenia
- Faculty of Natural Sciences and Mathematics, University of Maribor, Maribor, Slovenia
| | - S Mushtaq
- Department of Mathematics, Loyola College, University of Madras, Chennai, India
| | - K Balasubramanian
- School of Molecular Sciences, Arizona State University, Tempe, AZ, USA
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Braidy N, Berg J, Clement J, Khorshidi F, Poljak A, Jayasena T, Grant R, Sachdev P. Role of Nicotinamide Adenine Dinucleotide and Related Precursors as Therapeutic Targets for Age-Related Degenerative Diseases: Rationale, Biochemistry, Pharmacokinetics, and Outcomes. Antioxid Redox Signal 2019; 30:251-294. [PMID: 29634344 PMCID: PMC6277084 DOI: 10.1089/ars.2017.7269] [Citation(s) in RCA: 128] [Impact Index Per Article: 25.6] [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: 07/06/2017] [Revised: 02/22/2018] [Accepted: 02/22/2018] [Indexed: 12/20/2022]
Abstract
Significance: Nicotinamide adenine dinucleotide (NAD+) is an essential pyridine nucleotide that serves as an essential cofactor and substrate for a number of critical cellular processes involved in oxidative phosphorylation and ATP production, DNA repair, epigenetically modulated gene expression, intracellular calcium signaling, and immunological functions. NAD+ depletion may occur in response to either excessive DNA damage due to free radical or ultraviolet attack, resulting in significant poly(ADP-ribose) polymerase (PARP) activation and a high turnover and subsequent depletion of NAD+, and/or chronic immune activation and inflammatory cytokine production resulting in accelerated CD38 activity and decline in NAD+ levels. Recent studies have shown that enhancing NAD+ levels can profoundly reduce oxidative cell damage in catabolic tissue, including the brain. Therefore, promotion of intracellular NAD+ anabolism represents a promising therapeutic strategy for age-associated degenerative diseases in general, and is essential to the effective realization of multiple benefits of healthy sirtuin activity. The kynurenine pathway represents the de novo NAD+ synthesis pathway in mammalian cells. NAD+ can also be produced by the NAD+ salvage pathway. Recent Advances: In this review, we describe and discuss recent insights regarding the efficacy and benefits of the NAD+ precursors, nicotinamide (NAM), nicotinic acid (NA), nicotinamide riboside (NR), and nicotinamide mononucleotide (NMN), in attenuating NAD+ decline in degenerative disease states and physiological aging. Critical Issues: Results obtained in recent years have shown that NAD+ precursors can play important protective roles in several diseases. However, in some cases, these precursors may vary in their ability to enhance NAD+ synthesis via their location in the NAD+ anabolic pathway. Increased synthesis of NAD+ promotes protective cell responses, further demonstrating that NAD+ is a regulatory molecule associated with several biochemical pathways. Future Directions: In the next few years, the refinement of personalized therapy for the use of NAD+ precursors and improved detection methodologies allowing the administration of specific NAD+ precursors in the context of patients' NAD+ levels will lead to a better understanding of the therapeutic role of NAD+ precursors in human diseases.
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Affiliation(s)
- Nady Braidy
- Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales, Sydney, Australia
| | - Jade Berg
- Australasian Research Institute, Sydney Adventist Hospital, Sydney, Australia
| | | | - Fatemeh Khorshidi
- Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales, Sydney, Australia
| | - Anne Poljak
- Mark Wainwright Analytical Centre, University of New South Wales, Sydney, Australia
- School of Medical Sciences, University of New South Wales, Sydney, Australia
| | - Tharusha Jayasena
- Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales, Sydney, Australia
| | - Ross Grant
- Australasian Research Institute, Sydney Adventist Hospital, Sydney, Australia
- School of Medical Sciences, University of New South Wales, Sydney, Australia
- Sydney Medical School, University of Sydney, Sydney, Australia
| | - Perminder Sachdev
- Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales, Sydney, Australia
- Neuropsychiatric Institute, Euroa Centre, Prince of Wales Hospital, Sydney, Australia
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11
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Abstract
Nicotinamide adenine dinucleotide (NAD+) is an essential pyridine nucleotide that serves as an electron carrier in cellular metabolism and plays a crucial role in the maintenance of balanced redox homeostasis. Quantification of NAD+:NADH and NADP+:NADPH ratios are pivotal to a wide variety of cellular processes, including intracellular secondary messenger signaling by CD38 glycohydrolases, DNA repair by poly(adenosine diphosphate ribose) polymerase (PARP), epigenetic regulation of gene expression by NAD-dependent histone deacetylase enzymes known as sirtuins, and regulation of the oxidative pentose phosphate pathway. We quantified changes in the NAD+ metabolome in plasma samples collected from consenting healthy human subjects across a wide age range (20-87 years) using liquid chromatography coupled to tandem mass spectrometry. Our data show a significant decline in the plasma levels of NAD+, NADP+, and other important metabolites such as nicotinic acid adenine dinucleotide (NAAD) with age. However, an age-related increase in the reduced form of NAD+ and NADP+-NADH and NADPH-and nicotinamide (NAM), N-methyl-nicotinamide (MeNAM), and the products of adenosine diphosphoribosylation, including adenosine diphosphate ribose (ADPR) was also reported. Whereas, plasma levels of nicotinic acid (NA), nicotinamide mononucleotide (NMN), and nicotinic acid mononucleotide (NAMN) showed no statistically significant changes across age groups. Taken together, our data cumulatively suggest that age-related impairments are associated with corresponding alterations in the extracellular plasma NAD+ metabolome. Our future research will seek to elucidate the role of modulating NAD+ metabolites in the treatment and prevention of age-related diseases.
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Affiliation(s)
| | - Matthew Wong
- 2 Centre for Healthy Brain Ageing, University of New South Wales, School of Psychiatry, Sydney, Australia
| | - Anne Poljak
- 2 Centre for Healthy Brain Ageing, University of New South Wales, School of Psychiatry, Sydney, Australia.,3 Mark Wainwright Analytical Centre, University of New South Wales, Sydney, Australia.,4 School of Medical Sciences, University of New South Wales, Sydney, Australia
| | - Perminder Sachdev
- 2 Centre for Healthy Brain Ageing, University of New South Wales, School of Psychiatry, Sydney, Australia.,5 Neuropsychiatric Institute, Euroa Centre, Prince of Wales Hospital, Sydney, Australia
| | - Nady Braidy
- 2 Centre for Healthy Brain Ageing, University of New South Wales, School of Psychiatry, Sydney, Australia
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12
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Liu Y, Clement J, Grant R, Sachdev P, Braidy N. Quantitation of NAD+: Why do we need to measure it? Biochim Biophys Acta Gen Subj 2018; 1862:2527-2532. [PMID: 30048742 DOI: 10.1016/j.bbagen.2018.07.023] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 07/19/2018] [Accepted: 07/20/2018] [Indexed: 11/17/2022]
Abstract
BACKGROUND Nicotinamide adenine dinucleotide (NAD+) is an essential pyridine nucleotide that is currently investigated as an important target to extend lifespan and health span. Age-related NAD+ depletion due to the accumulation of oxidative stress is associated with reduced energy production, impaired DNA repair and genomic instability. SCOPE OF REVIEW NAD+ levels can be elevated therapeutically using NAD+ precursors or through lifestyle modifications including exercise and caloric restriction. However, high amounts of NAD+ may be detrimental in cancer progression and may have deleterious immunogenic roles. MAJOR CONCLUSIONS Standardized quantitation of NAD+ and related metabolites may therefore represent an important component of NAD+ therapy. GENERAL SIGNIFICANCE Quantitation of NAD+ may serve dual roles not only as an ageing biomarker, but also as a diagnostic tool for the prevention of malignant disorders.
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Affiliation(s)
- Yue Liu
- Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales, Sydney, Australia
| | | | - Ross Grant
- Australasian Research Institute, Sydney Adventist Hospital, Sydney, Australia; School of Medical Sciences, University of New South Wales, Sydney, Australia
| | - Perminder Sachdev
- Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales, Sydney, Australia; Neuropsychiatric Institute, Euroa Centre, Prince of Wales Hospital, Sydney, Australia
| | - Nady Braidy
- Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales, Sydney, Australia.
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13
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Beaulieu M, Gabana C, Rose C, Macdonald P, Clement J, Kiaii M. Stenosis at the area of Transposition – An Under-Recognized Complication of Transposed Brachiobasilic Fistulas. J Vasc Access 2018. [DOI: 10.1177/112972980700800409] [Citation(s) in RCA: 20] [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] [Indexed: 11/17/2022] Open
Abstract
Background With an increased focus on native AV fistula creation in hemodialysis patients, a transposed brachiobasilic fistula (tBBF) is becoming an increasingly utilized option. This study describes the outcomes of tBBFs in a chronic hemodialysis population. In particular, we focus on the incidence and location of stenosis, and review the impact of angioplasty on these lesions. Methods A retrospective cohort study using all patients with a tBBF created between January 2001 and December 2004. Results Of the 543 fistulas created during the study period, 93 were tBBFs. The mean age of patients was 65 years, 56% were male and 55% were diabetic. Stenosis occurred in 54% (46/85) of fistulas; the location of stenosis in the majority (74%) was at or near the area of basilic vein transposition and 50% of fistulas with stenosis in this location required three or more angioplasties. Primary (unassisted) patency was 42% at one year in this cohort. Secondary patency was 68% at 1 year and 58% and 53% at 2 and 3 years respectively. Conclusion In a cohort of hemodialysis patients who received a tBBF, we describe a reasonable primary and secondary patency rate and a high rate of stenosis at the point of transposition of the basilic vein. Such stenosis usually requires multiple percutaneous or surgical interventions to ensure or reestablish conduit patency. Further study is required regarding the optimal surgical technique, monitoring, and treatment of stenosis of this fistula type including the utility of repeat angioplasty.
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Affiliation(s)
- M.C. Beaulieu
- Division of Nephrology, St. Paul's
Hospital, Vancouver, British Columbia - Canada
| | - C. Gabana
- Division of Nephrology, St. Paul's
Hospital, Vancouver, British Columbia - Canada
| | - C. Rose
- Division of Nephrology, St. Paul's
Hospital, Vancouver, British Columbia - Canada
| | - P.S. Macdonald
- Division of Vascular Surgery, St.
Paul's Hospital, Vancouver, British Columbia - Canada
| | - J. Clement
- Department of Radiology, St. Paul's
Hospital, Vancouver, British Columbia - Canada
| | - M. Kiaii
- Division of Nephrology, St. Paul's
Hospital, Vancouver, British Columbia - Canada
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14
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Fan Y, Matthews H, Kilpatrick N, Claes P, Clement J, Penington A. Facial morphology and growth following surgery for congenital midline cervical cleft patients. Int J Oral Maxillofac Surg 2018; 47:437-441. [PMID: 29373199 DOI: 10.1016/j.ijom.2017.12.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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: 07/28/2017] [Revised: 11/01/2017] [Accepted: 12/14/2017] [Indexed: 11/16/2022]
Abstract
Congenital midline cervical cleft (CMCC) is a rare condition that consists of a cutaneous midline neck lesion with a sinus extending inferiorly towards the sternum. A fibrous band that extends superiorly to the mandible is a consistent feature of the condition. Restriction of growth of the mandible, possibly due to incomplete removal of the band, is the most significant long-term problem. It remains unclear whether early removal of the fibrous band might allow catch-up growth of the mandible. This study utilized non-invasive three-dimensional photographs to objectively evaluate the facial growth of six CMCC patients. The growth of these CMCC patients was compared to the average growth of age- and sex-matched controls from a database of three-dimensional facial photographs of clinically normal subjects. After surgical removal of the fibrous cord, CMCC patients experience growth in the chin at the same rate as in the normal population; no evidence was found for catch-up growth. As a result, individuals with CMCC are likely to require further surgical intervention to correct the residual retrognathia on completion of facial growth. Early excision of the lesion including aggressive resection of the fibrous band is still recommended, as this should optimize the early growth of the mandible in infancy.
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Affiliation(s)
- Y Fan
- Department of Dentistry, The University of Melbourne, Melbourne, Australia; Murdoch Children's Research Institute, Melbourne, Australia
| | - H Matthews
- Murdoch Children's Research Institute, Melbourne, Australia; The University of Melbourne Department of Paediatrics at the Royal Children's Hospital, Melbourne, Australia
| | - N Kilpatrick
- Murdoch Children's Research Institute, Melbourne, Australia; The University of Melbourne Department of Paediatrics at the Royal Children's Hospital, Melbourne, Australia
| | - P Claes
- Murdoch Children's Research Institute, Melbourne, Australia; Department of Electrical Engineering, KU Leuven, Leuven, Belgium; ESAT/PSI, Medical Image Computing, UZ Leuven, Leuven, Belgium; Medical Imaging Research Centre, Leuven, Belgium
| | - J Clement
- Department of Dentistry, The University of Melbourne, Melbourne, Australia; Murdoch Children's Research Institute, Melbourne, Australia; Cranfield University, Cranfield, Bedfordshire, UK
| | - A Penington
- Murdoch Children's Research Institute, Melbourne, Australia; The University of Melbourne Department of Paediatrics at the Royal Children's Hospital, Melbourne, Australia.
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Clement J, Lee APK, Verpooten GA, Laenen L, Vergote V, De Samblanx H, Berneman ZN, Van Ranst M, Maes P. Acute hantavirus infection presenting as haemolytic-uraemic syndrome (HUS): the importance of early clinical diagnosis. Eur J Clin Microbiol Infect Dis 2017; 37:135-140. [PMID: 28986730 DOI: 10.1007/s10096-017-3113-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 09/11/2017] [Indexed: 01/30/2023]
Abstract
The European prototype of hantavirus, Puumala virus (PUUV), isolated from a common wild rodent, the bank vole (Myodes glareolus), causes nephropathia epidemica (NE). NE can perfectly mimic haemolytic-uraemic syndrome (HUS), progressing from an aspecific flu-like syndrome to acute kidney injury with thrombocytopaenia, and presenting with some signs of haemolytic anaemia and/or coagulopathy. Moreover, both NE and HUS can occur in local outbreaks. We report an isolated case of NE, initially referred for plasmapheresis for suspected HUS, although signs of overt haemolysis were lacking. Early suspicion of hantavirus infection, later confirmed by serology and reverse transcription polymerase chain reaction (RT-PCR), prevented subsequent excessive treatment modalities.
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Affiliation(s)
- J Clement
- National Reference Laboratory for Hantavirus Infections, University Hospitals Leuven, Leuven, Belgium.
- Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium.
| | - A P K Lee
- Department of Nephrology, Antwerp University Hospital, Edegem, Belgium
| | - G A Verpooten
- Department of Nephrology, Antwerp University Hospital, Edegem, Belgium
| | - L Laenen
- National Reference Laboratory for Hantavirus Infections, University Hospitals Leuven, Leuven, Belgium
- Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium
| | - V Vergote
- National Reference Laboratory for Hantavirus Infections, University Hospitals Leuven, Leuven, Belgium
- Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium
| | - H De Samblanx
- Department of Haematology, Antwerp University Hospital, Edegem, Belgium
| | - Z N Berneman
- Department of Haematology, Antwerp University Hospital, Edegem, Belgium
| | - M Van Ranst
- National Reference Laboratory for Hantavirus Infections, University Hospitals Leuven, Leuven, Belgium
- Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium
| | - P Maes
- National Reference Laboratory for Hantavirus Infections, University Hospitals Leuven, Leuven, Belgium
- Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium
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16
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Greenwood C, Clement J, Dicken A, Evans JPO, Lyburn I, Martin RM, Rogers K, Stone N, Zioupos P. Towards new material biomarkers for fracture risk. Bone 2016; 93:55-63. [PMID: 27622884 DOI: 10.1016/j.bone.2016.09.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [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: 06/13/2016] [Revised: 09/05/2016] [Accepted: 09/08/2016] [Indexed: 12/28/2022]
Abstract
Osteoporosis is a prevalent bone condition, characterised by low bone mass and increased fracture risk. Currently, the gold standard for identifying osteoporosis and increased fracture risk is through quantification of bone mineral density (BMD) using dual energy X-ray absorption (DEXA). However, the risk of osteoporotic fracture is determined collectively by bone mass, architecture and physicochemistry of the mineral composite building blocks. Thus DEXA scans alone inevitably fail to fully discriminate individuals who will suffer a fragility fracture. This study examines trabecular bone at both ultrastructure and microarchitectural levels to provide a detailed material view of bone, and therefore provides a more comprehensive explanation of osteoporotic fracture risk. Physicochemical characterisation obtained through X-ray diffraction and infrared analysis indicated significant differences in apatite crystal chemistry and nanostructure between fracture and non-fracture groups. Further, this study, through considering the potential correlations between the chemical biomarkers and microarchitectural properties of trabecular bone, has investigated the relationship between bone mechanical properties (e.g. fragility) and physicochemical material features.
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Affiliation(s)
- C Greenwood
- Cranfield Forensic Institute, Cranfield University, Defence Academy of the UK, Shrivenham, UK.
| | - J Clement
- Forensic Odontology, Melbourne Dental School, University of Melbourne, Melbourne, Australia
| | - A Dicken
- The Imaging Science Group, Nottingham Trent University, Nottingham, UK
| | - J P O Evans
- The Imaging Science Group, Nottingham Trent University, Nottingham, UK
| | | | - R M Martin
- Social and Community Medicine, Bristol University, Bristol, UK
| | - K Rogers
- Cranfield Forensic Institute, Cranfield University, Defence Academy of the UK, Shrivenham, UK
| | - N Stone
- Physics and Astronomy, Exeter University, Exeter, UK
| | - P Zioupos
- Cranfield Forensic Institute, Cranfield University, Defence Academy of the UK, Shrivenham, UK
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17
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Clement J, Colson P, Saegeman V, Lagrou K, Van Ranst M. Are hantavirus infections also part of the rapidly growing spectrum of an infection-triggered reactive haemophagocytic syndrome? Clin Microbiol Infect 2016; 22:745-6. [PMID: 27263030 DOI: 10.1016/j.cmi.2016.05.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 05/16/2016] [Indexed: 10/21/2022]
Affiliation(s)
- J Clement
- National Hantavirus Reference Centre, Laboratory of Clinical and Epidemiological Virology and Rega Institute for Medical Research, University of Leuven, Leuven, Belgium.
| | - P Colson
- Clinique et Maternite Sainte-Elisabeth, Emergency Department, Namur, Belgium
| | - V Saegeman
- Microbiology and Immunology & Laboratory Medicine, University Hospitals Leuven, Leuven, Belgium
| | - K Lagrou
- Microbiology and Immunology & Laboratory Medicine, University Hospitals Leuven, Leuven, Belgium
| | - M Van Ranst
- Microbiology and Immunology & Laboratory Medicine, University Hospitals Leuven, Leuven, Belgium
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18
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Clement J, Hee RV, Ysebaert D, Verpoote G, Broe MD. Abstacts of the meeting of the Belgian Society of Internal Medicine (10 February 1990). Acta Clin Belg 2016. [DOI: 10.1080/17843286.1990.11718080] [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: 10/21/2022]
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19
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Clement J, Mckenna P, Ghoos S, Thomas I, Loock FV, Colson P. Abstracts of the meeting of the Belgian Society of Internal Medicine (20 January 1996). Acta Clin Belg 2016. [DOI: 10.1080/17843286.1996.11718498] [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: 10/21/2022]
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20
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Clement J, Mckenna P, Leirs H, Kunz C. Abstracts of the meeting of the Belgian Society oflnternal Medicine (29 January 1994). Acta Clin Belg 2016. [DOI: 10.1080/17843286.1994.11718376] [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: 10/21/2022]
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21
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Cormont A, Siepel H, Clement J, Melman T, WallisDeVries M, van Turnhout C, Sparrius L, Reemer M, Biesmeijer J, Berendse F, de Snoo G. Landscape complexity and farmland biodiversity: Evaluating the CAP target on natural elements. J Nat Conserv 2016. [DOI: 10.1016/j.jnc.2015.12.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Clement J, Colson P, Saegeman V, Lagrou K, Van Ranst M. 'Bedside assessment' of acute hantavirus infections and their possible classification into the spectrum of haemophagocytic syndromes. Eur J Clin Microbiol Infect Dis 2016; 35:1101-6. [PMID: 27101352 DOI: 10.1007/s10096-016-2638-4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Accepted: 03/20/2016] [Indexed: 11/29/2022]
Abstract
Hantavirus infections, recently renamed 'hantavirus fever' (HTVF), belong to the most common but also most underestimated zoonoses in the world. A small number of reports described the so-called 'lipid paradox' in HTVF, i.e. the striking contrast between a very low serum total cholesterol and/or high-density lipoprotein cholesterol (HDLc), and a paradoxical concomitant hypertriglyceridaemia. In a prospective study, with patients being their own control after illness, we wanted to verify if this quick and easy 'bedside test' was robust enough to warrant a preliminary diagnosis of acute kidney injury (AKI) caused by HTVF. The study cohort consisted of 58 Belgian cases (mean age 44 years), admitted with varying degrees of AKI and of thrombocytopaenia, both characteristic for presumptive HTVF. All cases were sero-confirmed as having acute HTVF. At or shortly after hospital admission, a significant (p < 0.001) decrease of total cholesterol and HDLc was found in comparison with normalised levels in the same cohort, quantified a few days after spontaneous AKI recovery. Conversely, fasting triglyceride levels during HTVF infection were significantly (p < 0.001) higher during illness than after recovery. This 'lipid paradox' was most outspoken in severe HTVF cases, often accompanying, or even predicting, major kidney or lung complications. Thus, this 'bedside assessment' seems to hold even promise for presumptive diagnosis of more severe so-called 'hantavirus cardio-pulmonary syndrome' (HCPS) cases, mostly described hitherto in the New World. In more severe AKI cases, the mean total cholesterol was significantly lower (p = 0.02) than in milder cases, i.e. cases with peak serum creatinine levels of < 1.5 mg/dL. Thrombocytopaenia, generally accepted as the severity index in HTVF, appeared, moreover, significantly correlated with serum levels of total cholesterol (R = 0.52, p < 0.001) and with serum levels of HDLc (R = 0.45, p < 0.01). A link with the novel clinical entity of haemophagocytic syndromes, also characterised by manifest hypertriglyceridaemia, is discussed.
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Affiliation(s)
- J Clement
- National Reference Centre for Hantavirus Infections, Laboratory of Clinical and Epidemiological Virology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium.
| | - P Colson
- Emergency Unit, Clinique Sainte Elisabeth, Namur, Belgium
| | - V Saegeman
- Laboratory Medicine, University Hospitals Leuven, Leuven, Belgium.,Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium
| | - K Lagrou
- Laboratory Medicine, University Hospitals Leuven, Leuven, Belgium.,Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium
| | - M Van Ranst
- National Reference Centre for Hantavirus Infections, Laboratory of Clinical and Epidemiological Virology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium.,Laboratory Medicine, University Hospitals Leuven, Leuven, Belgium.,Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium
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Damas S, Wilkinson C, Kahana T, Veselovskaya E, Abramov A, Jankauskas R, Jayaprakash PT, Ruiz E, Navarro F, Huete MI, Cunha E, Cavalli F, Clement J, Lestón P, Molinero F, Briers T, Viegas F, Imaizumi K, Humpire D, Ibáñez O. Study on the performance of different craniofacial superimposition approaches (II): Best practices proposal. Forensic Sci Int 2015; 257:504-508. [PMID: 26482539 DOI: 10.1016/j.forsciint.2015.07.045] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [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: 07/25/2014] [Revised: 05/21/2015] [Accepted: 07/27/2015] [Indexed: 11/18/2022]
Abstract
Craniofacial superimposition, although existing for one century, is still a controversial technique within the scientific community. Objective and unbiased validation studies over a significant number of cases are required to establish a more solid picture on the reliability. However, there is lack of protocols and standards in the application of the technique leading to contradictory information concerning reliability. Instead of following a uniform methodology, every expert tends to apply his own approach to the problem, based on the available technology and deep knowledge on human craniofacial anatomy, soft tissues, and their relationships. The aim of this study was to assess the reliability of different craniofacial superimposition methodologies and the corresponding technical approaches to this type of identification. With all the data generated, some of the most representative experts in craniofacial identification joined in a discussion intended to identify and agree on the most important issues that have to be considered to properly employ the craniofacial superimposition technique. As a consequence, the consortium has produced the current manuscript, which can be considered the first standard in the field; including good and bad practices, sources of error and uncertainties, technological requirements and desirable features, and finally a common scale for the craniofacial matching evaluation. Such a document is intended to be part of a more complete framework for craniofacial superimposition, to be developed during the FP7-founded project MEPROCS, which will favour and standardize its proper application.
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Affiliation(s)
- S Damas
- European Centre for Soft Computing, Mieres, Spain.
| | - C Wilkinson
- Centre for Anatomy & Human Identification, University of Dundee, UK
| | - T Kahana
- Division of Identification and Forensic Sciences, Israel National Police, Jerusalem, Israel
| | - E Veselovskaya
- Institute of Ethnology and Anthropology Russian Academy of Science, Moscow, Russia
| | - A Abramov
- Main Department of Criminalistics Investigation Committee of Russia, Moscow, Russia
| | - R Jankauskas
- Department of Anatomy, Histology and Anthropology, Vilnius University, Vilnius, Lithuania
| | - P T Jayaprakash
- Science Program, School of Health Sciences, Universiti Sains Malaysia, Kubang Kerian, Malaysia
| | - E Ruiz
- Legal Medicine School, Complutense University of Madrid, Spain
| | - F Navarro
- Physical Anthropology Laboratory, University of Granada, Granada, Spain
| | - M I Huete
- Physical Anthropology Laboratory, University of Granada, Granada, Spain
| | - E Cunha
- Forensic Sciences Centre (CENCIFOR), Coimbra, Portugal; Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - F Cavalli
- Research Unit of Paleoradiology and Allied Sciences, Ospedali Riuniti di Trieste, Trieste, Italy
| | - J Clement
- Melbourne Dental School, University of Melbourne, Melbourne, Australia
| | - P Lestón
- Department of Identification - Criminalist Services, Civil Guard, Madrid, Spain
| | - F Molinero
- Department of Identification - Criminalist Services, Civil Guard, Madrid, Spain
| | - T Briers
- South Africa Police Service, Pretoria, South Africa
| | - F Viegas
- Crime Scene Investigation Section, Forensic Laboratory, Portuguese Criminal Police, Lisbon, Portugal
| | - K Imaizumi
- National Research Institute of Police Science, Japan
| | | | - O Ibáñez
- European Centre for Soft Computing, Mieres, Spain; Department of Computer Science and Artificial Intelligence, University of Granada, Granada, Spain
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Singh T, Wiesenfeld D, Clement J, Chandu A, Nastri A. Ameloblastoma: demographic data and treatment outcomes from Melbourne, Australia. Aust Dent J 2015; 60:24-9. [PMID: 25329538 DOI: 10.1111/adj.12244] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/19/2014] [Indexed: 12/01/2022]
Abstract
BACKGROUND There is a lack of published data on the demographics and treatment outcomes of ameloblastomas treated in Australia. Our objective was to collect this data and compare the findings to other international studies. METHODS A retrospective study of 42 patients with ameloblastoma was conducted at The Royal Melbourne Hospital, Australia. Data on the demographic features, management techniques (ablative and reconstructive), and outcomes were collected and analysed. RESULTS The majority of tumours were solid/multicystic (81%) and occurred most commonly in the mandible (80.5%). Unicystic ameloblastomas affected a younger age group, with Type 3 being the most common subtype. Overall, the recurrence rate for solid/multicystic ameloblastomas was 14.7%; however, radical surgery was found to have a significantly lower recurrence rate when compared to conservative management (p=0.015), with a mean of 51 months follow-up. Results indicated that vascularized free-flaps had fewer postoperative complications than non-vascularized bone grafts; however, the differences did not reach statistical significance. CONCLUSIONS This is the largest clinicopathological study regarding ameloblastoma management from Australia, and our results support the current literature in recommending radical surgery for the treatment of solid/multicystic and Type 3 unicystic tumours.
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Affiliation(s)
- T Singh
- Oral and Maxillofacial Surgery, The Royal Melbourne Hospital, Parkville, Victoria; Melbourne Dental School, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Victoria
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26
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Clement J, Van Esbroeck M, Lagrou K, Verschueren J, Sunil-Chandra NP, Van Ranst M. Leptospirosis versus hantavirus infections in the Netherlands and in Belgium, 2000 to 2014. ACTA ACUST UNITED AC 2014; 19. [PMID: 25306880 DOI: 10.2807/1560-7917.es2014.19.38.20912] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- J Clement
- National Reference Centre for Hantaviruses, Clinical and Epidemiological Virology, University Hospitals of Leuven, Leuven, Belgium
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Affiliation(s)
- C. Greenwood
- Department of Engineering and Applied Science; Cranfield University; Shrivenham Wiltshire SN6 8LA UK
| | - K. Rogers
- Department of Engineering and Applied Science; Cranfield University; Shrivenham Wiltshire SN6 8LA UK
| | - S. Beckett
- Department of Engineering and Applied Science; Cranfield University; Shrivenham Wiltshire SN6 8LA UK
| | - J. Clement
- Faculty of Medicine; Dentistry and Health Science; Melbourne Dental School; The University of Melbourne; 720 Swanston Street Melbourne 3010 Vic. Australia
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Clement J, Vergote V, Laenen L, Van Ranst M. Letter to the editor: Distinguishing between hantavirus-induced haemorrhagic fever with renal syndrome and pregnancy-induced liver pathologies (AFLP and HELLP syndromes). Euro Surveill 2013. [DOI: 10.2807/ese.18.22.20493-en] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- J Clement
- National Reference Laboratory for Hantavirus Infections, Laboratory of Clinical Virology, University Hospital Gasthuisberg, Leuven, Belgium
| | - V Vergote
- National Reference Laboratory for Hantavirus Infections, Laboratory of Clinical Virology, University Hospital Gasthuisberg, Leuven, Belgium
| | - L Laenen
- National Reference Laboratory for Hantavirus Infections, Laboratory of Clinical Virology, University Hospital Gasthuisberg, Leuven, Belgium
| | - M Van Ranst
- National Reference Laboratory for Hantavirus Infections, Laboratory of Clinical Virology, University Hospital Gasthuisberg, Leuven, Belgium
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Clement J, Vergote V, Laenen L, Van Ranst M. Distinguishing between hantavirus-induced haemorrhagic fever with renal syndrome and pregnancy-induced liver pathologies (AFLP and HELLP syndromes. Euro Surveill 2013; 18:20493. [PMID: 23787079] [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: 06/02/2023] Open
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Gizzi M, Delaere B, Weynand B, Clement J, Maes P, Vergote V, Laenen L, Hjelle B, Verroken A, Dive A, Michaux I, Evrard P, Creytens D, Bulpa P. Another case of "European hantavirus pulmonary syndrome" with severe lung, prior to kidney, involvement, and diagnosed by viral inclusions in lung macrophages. Eur J Clin Microbiol Infect Dis 2013; 32:1341-5. [PMID: 23670277 PMCID: PMC7102061 DOI: 10.1007/s10096-013-1885-x] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Accepted: 04/17/2013] [Indexed: 12/24/2022]
Abstract
Puumala virus (PUUV) is considered a classic Old World etiologic agent of nephropathia epidemica (NE), or hemorrhagic fever with renal syndrome (HFRS). HFRS is considered to be distinct from hantavirus (cardio-)pulmonary syndrome (HPS or HCPS), described in the New World. Here, we report a severe case, which fulfilled most, if not all, Centers for Disease Control and Prevention (CDC) criteria for HPS, needing non-invasive ventilation and subsequent acute hemodialysis. However, the etiological agent was PUUV, as proved by serological testing, real-time polymerase chain reaction (PCR), and sequencing. Viral antigen was detected by specific anti-PUUV immunostaining, showing, for the first time, greenish intracytoplasmic inclusions in bronchoalveolar lavage (BAL) macrophages. This case definitely confirms that HPS can be encountered during PUUV infections. Interestingly, special findings could render the diagnosis easier, such as greenish homogeneous cytoplasmic inclusions, surrounded by a fine clear halo in BAL macrophages. Therefore, although the diagnosis remains difficult before the onset of renal involvement, the occurrence of severe respiratory failure mimicking community-acquired pneumonia must alert the clinician for possible HPS, especially in endemic areas.
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Affiliation(s)
- M. Gizzi
- Intensive Care Unit, Centre Hospitalier Universitaire de Mont-Godinne, Université Catholique de Louvain, 5530 Yvoir, Belgium
| | - B. Delaere
- Infectious Diseases Unit, Centre Hospitalier Universitaire de Mont-Godinne, Université Catholique de Louvain, Yvoir, Belgium
| | - B. Weynand
- Pathology Unit, Centre Hospitalier Universitaire de Mont-Godinne, Université Catholique de Louvain, Yvoir, Belgium
| | - J. Clement
- National Reference Centre for Hantaviruses, University Hospitals Leuven, Gasthuisberg, University of Leuven, Leuven, KU Belgium
- Zoonotic Infectious Diseases unit, Clinical Virology, Rega Institute for Medical Research, Leuven, KU Belgium
| | - P. Maes
- National Reference Centre for Hantaviruses, University Hospitals Leuven, Gasthuisberg, University of Leuven, Leuven, KU Belgium
- Zoonotic Infectious Diseases unit, Clinical Virology, Rega Institute for Medical Research, Leuven, KU Belgium
| | - V. Vergote
- National Reference Centre for Hantaviruses, University Hospitals Leuven, Gasthuisberg, University of Leuven, Leuven, KU Belgium
- Zoonotic Infectious Diseases unit, Clinical Virology, Rega Institute for Medical Research, Leuven, KU Belgium
| | - L. Laenen
- National Reference Centre for Hantaviruses, University Hospitals Leuven, Gasthuisberg, University of Leuven, Leuven, KU Belgium
- Zoonotic Infectious Diseases unit, Clinical Virology, Rega Institute for Medical Research, Leuven, KU Belgium
| | - B. Hjelle
- Departments of Pathology, Biology, Molecular Genetics and Microbiology, Center for Infectious Diseases and Immunity, University of New Mexico, Albuquerque, NM USA
| | - A. Verroken
- Microbiology Unit, Centre Hospitalier Universitaire de Mont-Godinne, Université Catholique de Louvain, Yvoir, Belgium
| | - A. Dive
- Intensive Care Unit, Centre Hospitalier Universitaire de Mont-Godinne, Université Catholique de Louvain, 5530 Yvoir, Belgium
| | - I. Michaux
- Intensive Care Unit, Centre Hospitalier Universitaire de Mont-Godinne, Université Catholique de Louvain, 5530 Yvoir, Belgium
| | - P. Evrard
- Intensive Care Unit, Centre Hospitalier Universitaire de Mont-Godinne, Université Catholique de Louvain, 5530 Yvoir, Belgium
| | - D. Creytens
- Pathology Department, University Hospital Ghent, Ghent, Belgium
| | - P. Bulpa
- Intensive Care Unit, Centre Hospitalier Universitaire de Mont-Godinne, Université Catholique de Louvain, 5530 Yvoir, Belgium
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Haredasht SA, Taylor CJ, Maes P, Verstraeten WW, Clement J, Barrios M, Lagrou K, Van Ranst M, Coppin P, Berckmans D, Aerts JM. Model-Based Prediction of Nephropathia Epidemica Outbreaks Based on Climatological and Vegetation Data and Bank Vole Population Dynamics. Zoonoses Public Health 2012; 60:461-77. [DOI: 10.1111/zph.12021] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Greenwood C, Rogers K, Beckett S, Clement J. Bone mineral crystallisation kinetics. J Mater Sci Mater Med 2012; 23:2055-2060. [PMID: 22743865 DOI: 10.1007/s10856-012-4679-2] [Citation(s) in RCA: 6] [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] [Received: 10/07/2011] [Accepted: 05/11/2012] [Indexed: 06/01/2023]
Abstract
The kinetics of bone apatite crystallisation are examined using a novel approach to obtain quantitative, direction dependence features such as growth rate and activation energy. X-ray diffraction was employed for analysis of bovine, porcine and 'anorganic' bone specimens. Apatite coherence length was utilised as the independent variable within a Johnson-Mehl-Avrami (JMA) model. A direction averaged crystallisation activation energy of 183 ± 8 kJ mol(-1) was observed for the three bone groups. The Johnson-Mehl-Avrami 'n' exponent decreased with increasing temperature for all bone groups, indicating that apatite crystallisation changes to a diffusion limited process at higher temperatures. The results revealed little evidence to support any organic component 'protective' effect, and, on the contrary indicated that the organic matrix promotes apatite crystallisation.
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Affiliation(s)
- C Greenwood
- Department of Engineering and Applied Science, Cranfield University, Shrivenham, Wiltshire, SN6 8LA, UK.
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Clement J, Maes P, Lagrou K, Van Ranst M, Lameire N. A unifying hypothesis and a single name for a complex globally emerging infection: hantavirus disease. Eur J Clin Microbiol Infect Dis 2012; 31:1-5. [PMID: 22068273 PMCID: PMC7101631 DOI: 10.1007/s10096-011-1456-y] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2011] [Accepted: 10/11/2011] [Indexed: 12/11/2022]
Affiliation(s)
- J. Clement
- National Reference Laboratory for Hantavirus Infections, University Hospital Gasthuisberg, Herestraat 49, 3000 Leuven, Belgium
| | - P. Maes
- National Reference Laboratory for Hantavirus Infections, University Hospital Gasthuisberg, Herestraat 49, 3000 Leuven, Belgium
| | - K. Lagrou
- National Reference Laboratory for Hantavirus Infections, University Hospital Gasthuisberg, Herestraat 49, 3000 Leuven, Belgium
| | - M. Van Ranst
- National Reference Laboratory for Hantavirus Infections, University Hospital Gasthuisberg, Herestraat 49, 3000 Leuven, Belgium
| | - N. Lameire
- Nephrology, University Hospital Gent, De Pintelaan 85, 9000 Gent, Belgium
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Claes P, Walters M, Clement J. Improved facial outcome assessment using a 3D anthropometric mask. Int J Oral Maxillofac Surg 2011; 41:324-30. [PMID: 22103995 DOI: 10.1016/j.ijom.2011.10.019] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2010] [Revised: 08/16/2011] [Accepted: 10/20/2011] [Indexed: 11/29/2022]
Abstract
The capacity to process three-dimensional facial surfaces to objectively assess outcomes of craniomaxillofacial care is urgently required. Available surface registration techniques depart from conventional facial anthropometrics by not including anatomical relationship in their analysis. Current registrations rely on the manual selection of areas or points that have not moved during surgery, introducing subjectivity. An improved technique is proposed based on the concept of an anthropometric mask (AM) combined with robust superimposition. The AM is the equivalent to landmark definitions, as used in traditional anthropometrics, but described in a spatially dense way using (∼10.000) quasi-landmarks. A robust superimposition is performed to align surface images facilitating accurate measurement of spatial differences between corresponding quasi-landmarks. The assessment describes magnitude and direction of change objectively and can be displayed graphically. The technique was applied to three patients, without any modification and prior knowledge: a 4-year-old boy with Treacher-Collins syndrome in a resting and smiling pose; surgical correction for hemimandibular hypoplasia; and mandibular hypoplasia with staged orthognathic procedures. Comparisons were made with a reported closest-point (CP) strategy. Contrasting outcomes were found where the CP strategy resulted in anatomical implausibility whilst the AM technique was parsimonious to expected differences.
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Affiliation(s)
- P Claes
- K.U. Leuven, Medical Imaging Research Center, Faculty of Engineering, Department of Electrical Engineering - ESAT, Center for Processing Speech and Images, Herestraat 49, Leuven, Belgium.
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Haredasgt SA, Barrios M, Maes P, Clement J, Lagrou K, Ranst MV, Coppin P, Berckmans D, Aerts JM. P1-387 Time series analysis performed on nephropathia epidemica in Belgium. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976f.78] [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: 11/03/2022]
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Clement J, van der Groen G, Maes P, Van Ranst M. Puumala virus reference strain for hantavirus serodiagnosis in France. Eur J Clin Microbiol Infect Dis 2010; 29:1-2; author reply 3. [PMID: 19885688 DOI: 10.1007/s10096-009-0829-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Steinert S, Sänger J, Schmidt A, Hartmann A, Höffken K, Clement J. Link between BMP expression and clinical outcome in breast carcinomas. Cell Commun Signal 2009. [PMCID: PMC4291722 DOI: 10.1186/1478-811x-7-s1-a38] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Steinert S, Kroll T, Taubert I, Pusch L, Hortschansky P, Höffken K, Wölfl S, Clement J. Unfolded protein response is activated by single application of BMP-2. Cell Commun Signal 2009. [PMCID: PMC4291720 DOI: 10.1186/1478-811x-7-s1-a37] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Choueiri TK, Regan M, Oh W, Clement J, Amato A, McDermott D, Cho D, Atkins M, Signoretti S. Prognostic and predictive values of carbonic anhydrase IX (CAIX) and pathologic features in patients with metastatic clear cell renal cell carcinoma receiving targeted therapy. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e16067] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e16067 Background: Tumor Carbonic Anhydrase IX (CAIX) expression and histologic features can predict outcome in patients with metastatic renal cell carcinoma (mRCC) treated with immunotherapy. We sought to investigate the prognostic and predictive utility of such features in patients receiving VEGF-targeted therapy. Methods: We identified 118 patients with mRCC initiating first- line VEGF-targeted therapy including 94 with clinical data, clear cell histology and available tissue. Tumors were evaluated for specific histologic features and for CAIX expression by immunohistochemistry using the MN75 antibody. The relationship between these pathology findings and tumor shrinkage and other treatment outcomes was assessed. Results: Higher tumor clear cell component was independently associated with greater tumor shrinkage (p=0.02), response (p=0.02) and treatment duration (p=0.02). Patients with high vs. low tumor CAIX expression had mean tumor shrinkages of -12% vs. -5%, respectively (p=.38). There was heterogeneity in tumor responsiveness to sunitinib or sorafenib according to CAIX status (p=0.055 for interaction): mean shrinkage was -17% vs. -25% (mean difference +8%, 95% CI -14% to +31%) for sunitinib-treated patients with high vs. low tumor CAIX expression compared to -13% vs. +9% (mean difference -22%, 95% CI -42% to -1%) for sorafenib-treated patients. Conclusions: Patients with higher clear cell component in their tumors are likely to experience superior clinical benefit from VEGF-targeted therapy. Although CAIX expression was not found to be of prognostic value in patients with clear cell mRCC treated with VEGF-targeted therapy, it may be a predictive biomarker for response to sorafenib treatment. [Table: see text]
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Affiliation(s)
- T. K. Choueiri
- Dana- Faber Cancer Institute, Boston, MA; Beth Israel Deaconess Medical Center, Boston, MA; Brigham and Women's Hospital, Boston, MA
| | - M. Regan
- Dana- Faber Cancer Institute, Boston, MA; Beth Israel Deaconess Medical Center, Boston, MA; Brigham and Women's Hospital, Boston, MA
| | - W. Oh
- Dana- Faber Cancer Institute, Boston, MA; Beth Israel Deaconess Medical Center, Boston, MA; Brigham and Women's Hospital, Boston, MA
| | - J. Clement
- Dana- Faber Cancer Institute, Boston, MA; Beth Israel Deaconess Medical Center, Boston, MA; Brigham and Women's Hospital, Boston, MA
| | - A. Amato
- Dana- Faber Cancer Institute, Boston, MA; Beth Israel Deaconess Medical Center, Boston, MA; Brigham and Women's Hospital, Boston, MA
| | - D. McDermott
- Dana- Faber Cancer Institute, Boston, MA; Beth Israel Deaconess Medical Center, Boston, MA; Brigham and Women's Hospital, Boston, MA
| | - D. Cho
- Dana- Faber Cancer Institute, Boston, MA; Beth Israel Deaconess Medical Center, Boston, MA; Brigham and Women's Hospital, Boston, MA
| | - M. Atkins
- Dana- Faber Cancer Institute, Boston, MA; Beth Israel Deaconess Medical Center, Boston, MA; Brigham and Women's Hospital, Boston, MA
| | - S. Signoretti
- Dana- Faber Cancer Institute, Boston, MA; Beth Israel Deaconess Medical Center, Boston, MA; Brigham and Women's Hospital, Boston, MA
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Bhalla S, van Wyngaarden C, Clement J. Abstract No. 263 EE: Pulmonary AVM’s in HHT; a Pictorial Review of Diagnosis and Embotherapy. J Vasc Interv Radiol 2008. [DOI: 10.1016/j.jvir.2007.12.297] [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: 11/25/2022] Open
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Affiliation(s)
- J Clement
- Hantavirus Reference Centre K.U. Leuven, Laboratory of Clinical and Epidemiological Virology & Rega Institute for Medical Research, University of Leuven, Belgium.
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Lamb GC, Dahlen CR, Vonnahme KA, Hansen GR, Arseneau JD, Perry GA, Walker RS, Clement J, Arthington JD. Influence of a CIDR prior to bull breeding on pregnancy rates and subsequent calving distribution. Anim Reprod Sci 2007; 108:269-78. [PMID: 17905546 DOI: 10.1016/j.anireprosci.2007.08.012] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Received: 05/11/2007] [Accepted: 08/28/2007] [Indexed: 11/18/2022]
Abstract
We determined whether insertion of a CIDR for 7 days prior to the breeding season enhanced pregnancy rates and altered the date of conception in suckled beef cows mated naturally. Suckled beef cows (n=2033) from 15 locations were randomly assigned to one of two treatments: (1) cows received a CIDR 7 days prior to the breeding season for 7 days (CIDR; n=999); (2) cows received no treatment (Control; n=1034). On the first day of the breeding season bulls were introduced to herds at a rate of 15-25 cows per yearling bull or 20-30 cows per mature bull. Pregnancy status and the date of conception were determined via transrectal ultrasonography at 56 and 120 days after initiation of the breeding season. Overall pregnancy rates ranged from 59.3 to 98.9% among the 15 locations. The percentage of cows becoming pregnant during the first 30 days of the breeding season was similar between CIDR (68.2%) and Control (66.7%) cows, and overall pregnancy rates were similar between CIDR (88.9%) and Control (88.6%) cows. The average day of conception after initiation of the breeding season was shorter (P<0.01) for CIDR (20.1+/-0.8 days) compared to Control cows (23.2+/-0.8 days). Of cows conceiving during the breeding season, more (P<0.05) CIDR cows (35.9%) conceived during the first 10 days of the breeding season than Control cows (30.8%). Neither body condition score and nor parity affected pregnancy rates or days to conception, whereas pregnancy rates and days to conception were affected (P<0.01) by location and days postpartum. Days to conception were greater for cows that calved within 40 days (31.6+/-1.2 days) of initiation of the breeding season compared to cows calving between 40 and 50 days (25.3+/-1.2 days) prior to initiation of the breeding season, which were greater than those cows calving between 50-60 days (20.0+/-0.8 days) and 60-70 days (21.3+/-1.0 days) prior to initiation of the breeding season. Cows calving greater than 70 days (17.3+/-1.5 days) from initiation of the breeding season had the shortest interval to conception. We concluded that insertion of a CIDR prior to the breeding season failed to increase overall pregnancy rates, but did influence the average day of conception.
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Affiliation(s)
- G C Lamb
- North Central Research and Outreach Center, University of Minnesota, 1861 Highway 169E, Grand Rapids, MN 55744, USA.
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Beaulieu MC, Gabana C, Rose C, MacDonald PS, Clement J, Kiaii M. Stenosis at the area of transposition - an under-recognized complication of transposed brachiobasilic fistulas. J Vasc Access 2007; 8:268-274. [PMID: 18161673] [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: 05/25/2023] Open
Abstract
BACKGROUND With an increased focus on native AV fistula creation in hemodialysis patients, a transposed brachiobasilic fistula (tBBF) is becoming an increasingly utilized option. This study describes the outcomes of tBBFs in a chronic hemodialysis population. In particular, we focus on the incidence and location of stenosis, and review the impact of angioplasty on these lesions. METHODS A retrospective cohort study using all patients with a tBBF created between January 2001 and December 2004. RESULTS Of the 543 fistulas created during the study period, 93 were tBBFs. The mean age of patients was 65 years, 56% were male and 55% were diabetic. Stenosis occurred in 54% (46/85) of fistulas; the location of stenosis in the majority (74%) was at or near the area of basilic vein transposition and 50% of fistulas with stenosis in this location required three or more angioplasties. Primary (unassisted) patency was 42% at one year in this cohort. Secondary patency was 68% at 1 year and 58% and 53% at 2 and 3 years respectively. CONCLUSION In a cohort of hemodialysis patients who received a tBBF, we describe a reasonable primary and secondary patency rate and a high rate of stenosis at the point of transposition of the basilic vein. Such stenosis usually requires multiple percutaneous or surgical interventions to ensure or reestablish conduit patency. Further study is required regarding the optimal surgical technique, monitoring, and treatment of stenosis of this fistula type including the utility of repeat angioplasty.
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Affiliation(s)
- M C Beaulieu
- Division of Nephrology, St. Paul's Hospital, Vancouver, British Columbia, Canada.
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Pachmann K, Camara O, Lobodasch K, Clement J, Dengler R, Hoeffken K. Monitoring of circulating tumor cells during systemic therapy allows distinguishing breast cancer patients at risk for relapse. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.11006] [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: 11/20/2022] Open
Abstract
11006 Background: Recent refinement of methods, allowing detection of minimal numbers of residual cells from malignant tumors have reactivated the debate, to what extent single tumor cells in lymph nodes, bone marrow and peripheral blood can be considered as “micrometastases”. The presence of such cells, indeed, reflects only the first step in the metastatic process, dissemination, and the formation of metastases from such cells seems to be quite ineffective. If, however these cells react to therapy in an identical way as the tumor itself, these cells can be used to monitor therapy response very early during primary systemic (neoadjuvant) therapy, during adjuvant therapy, where no other target is available to control therapy success and already during therapy initiation in metastatic disease. Methods: Circulating epithelial cells were enumerated from 1 ml of anticoagulated blood after red blood cell lysis, staining of live cells with a fluorochrome labeled anti-epithelial antibody and automated microscopy before and after each chemotherapy cycle for monitoring of therapy success. Results: The response of the peripherally circulating cells of 35 patients with breast cancer treated with neoadjuvant chemotherapy varied from marginal (less than tenfold) to highly responsive (more than thousand fold) already during the first three to four courses and showed identical response to therapy as the whole tumor with a correlation of p > 0.9. The method was subsequently applied to monitor the response of such cells in the adjuvant treatment. In the first 25 patients with a follow up of more than 4 years, an increase in cell numbers already from the begin of therapy or following an initial response was observed in 20% of patients and all of these patients have subsequently relapsed (p<0,0001). These results have now been corroborated in a total of 148 patients, confirming a hazard ratio of 25 for relapse in the following 5 years for patients with increasing cell numbers during therapy independent of therapy regimen and a significance of p<0.0001. Conclusions: Quantitative monitoring of circulating tumor cells can be used as a tool for therapy survey in breast cancer in the absence of manifest tumor. No significant financial relationships to disclose.
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Affiliation(s)
- K. Pachmann
- Clinic for Internal Medicine II, Jena, Germany; Friedrich Schiller University, Jena, Germany; DRK Krankenhaus Chemnitz Rabenstein, Chemnitz, Germany; Practice for Hematology and Oncology, Regensburg, Germany
| | - O. Camara
- Clinic for Internal Medicine II, Jena, Germany; Friedrich Schiller University, Jena, Germany; DRK Krankenhaus Chemnitz Rabenstein, Chemnitz, Germany; Practice for Hematology and Oncology, Regensburg, Germany
| | - K. Lobodasch
- Clinic for Internal Medicine II, Jena, Germany; Friedrich Schiller University, Jena, Germany; DRK Krankenhaus Chemnitz Rabenstein, Chemnitz, Germany; Practice for Hematology and Oncology, Regensburg, Germany
| | - J. Clement
- Clinic for Internal Medicine II, Jena, Germany; Friedrich Schiller University, Jena, Germany; DRK Krankenhaus Chemnitz Rabenstein, Chemnitz, Germany; Practice for Hematology and Oncology, Regensburg, Germany
| | - R. Dengler
- Clinic for Internal Medicine II, Jena, Germany; Friedrich Schiller University, Jena, Germany; DRK Krankenhaus Chemnitz Rabenstein, Chemnitz, Germany; Practice for Hematology and Oncology, Regensburg, Germany
| | - K. Hoeffken
- Clinic for Internal Medicine II, Jena, Germany; Friedrich Schiller University, Jena, Germany; DRK Krankenhaus Chemnitz Rabenstein, Chemnitz, Germany; Practice for Hematology and Oncology, Regensburg, Germany
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Al-Amad S, McCullough M, Graham J, Clement J, Hill A. Craniofacial identification by computer-mediated superimposition. THE JOURNAL OF FORENSIC ODONTO-STOMATOLOGY 2006; 24:47-52. [PMID: 17175836] [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: 05/13/2023]
Abstract
Mass disasters are associated with a large number of fatalities, with victims being visually unidentifiable in most cases. Dental identification, although being an important and valuable identification method, is subject to the availability and quality of antemortem and postmortem dental records. This paper presents a simple-to-use method of human identification using an antemortem photograph showing anterior teeth with superimposition onto a postmortem image using specific features of Adobe Photoshop. We present cases and discuss the benefits and difficulties of this method.
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Affiliation(s)
- S Al-Amad
- Oral Anatomy, Medicine and Surgery, School of Dental Science, University of Melbourne, Australia.
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Clement J, van der Groen G, Lameire N, Colson P, Van Ranst M. Acute non-cardiogenic pulmonary edema in a 2003 French Puumala virus case: cautions and corrections. Clin Nephrol 2005; 61:364-5; author reply 366. [PMID: 15182134 DOI: 10.5414/cnp61364] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Clement J. "Change is inevitable and desirable": an interview with Ontario's Minister of Health and Long-Term Care. Interview by Peggy Leatt. Hosp Q 2002; 5:56-9. [PMID: 11765495] [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: 02/23/2023]
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Clement J. [Not Available]. Acta Belg Hist Med 2001; 1:34-7. [PMID: 11621681] [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: 02/21/2023]
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Clement J, van Ranst M, Lamiere N. Hantavirus infection complicated with ARF and spontaneous perinephric haemorrhage. Nephron Clin Pract 2001; 89:241-2. [PMID: 11549914 DOI: 10.1159/000046079] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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