1
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Castello S, Darker C, Vance J, Buckley E, Reynolds C, Cronin N, Dougall N, Devane D, Bauld L, Hayes CB. The knowledge exchange and dissemination plan of the We Can Quit2 community-based stop-smoking trial. Eur J Public Health 2021. [DOI: 10.1093/eurpub/ckab165.012] [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: 11/13/2022] Open
Abstract
Abstract
Background
We Can Quit2 was a community-based randomised controlled trial which determined the feasibility and acceptability of We Can Quit (WCQ), a peer delivered stop-smoking programme comprising group support and free Nicotine Replacement Therapy (NRT) tailored to women living in socioeconomically disadvantaged areas in Ireland. Reengagement with key stakeholders took place as part of the trial Knowledge Exchange and Dissemination plan, to discuss strategies to optimise community engagement, recruitment and retention in a future definitive trial (DT), and the policy priorities arising from the trial.
Methods
Community stakeholders involved in trial recruitment and planning, Irish Cancer Society and Health Service Executive representatives were invited to an online interactive workshop in November 2020. Key trial findings were presented. Workshop discussion (field notes) and responses to a post-event anonymous questionnaire informed a list of challenges and suggestions for a future DT and policy development from a community perspective.
Results
Forty-one stakeholders attended the workshop, six completed the questionnaire. Dedicated additional time for community engagement and use of social prescribing as a recruitment tool were recommended. Greater adaptation of trial data and assistance to complete forms were suggested to address low literacy, which was a barrier to recruitment and retention. An intervention boost after WCQ delivery and encouragement of women to join other healthy community programmes to maintain their group, were recommended to facilitate retention and enhance sustainability. Policy priorities were to remove cost and administrative barriers to access NRT and ongoing provision of cessation services tailored to disadvantaged groups.
Conclusions
Important strategies to optimise design of a DT of WCQ effectiveness were recommended. Lessons learned may be relevant to other community-based health interventions in socioeconomically disadvantaged areas.
Key messages
The workshop provided a suitable forum for engagement of community and statutory stakeholders. Knowledge exchange activities facilitated an enhanced research design from a community perspective.
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Affiliation(s)
- S Castello
- Public Health & Primary Care, Institute of Population Health, Trinity College Dublin, Dublin, Ireland
| | - C Darker
- Public Health & Primary Care, Institute of Population Health, Trinity College Dublin, Dublin, Ireland
| | - J Vance
- Community Programmes, Irish Cancer Society, Dublin, Ireland
| | - E Buckley
- Tobacco Free Ireland Programme, Health Service Executive, Dublin, Ireland
| | - C Reynolds
- Community Programmes, Irish Cancer Society, Dublin, Ireland
| | - N Cronin
- Action on Smoking and Health, ASH Ireland, Dublin, Ireland
| | - N Dougall
- School of Health and Social Care, Edinburgh Napier University, Edinburgh, UK
| | - D Devane
- HRB TMRN and School of Nursing & Midwifery, NUI Galway, Galway, Ireland
| | - L Bauld
- Usher Institute, SPECTRUM Consortium, College of Medicine, University of Edinburgh, Edinburgh, UK
| | - CB Hayes
- Public Health & Primary Care, Institute of Population Health, Trinity College Dublin, Dublin, Ireland
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2
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Darker C, Burke E, Castello S, O'Sullivan K, Vance J, Buggy A, Loudon K, Williams P, Dobbie F, Hayes C. Process evaluation of We Can Quit- stop-smoking programme for women in socio-disadvantage in Ireland. Eur J Public Health 2021. [DOI: 10.1093/eurpub/ckab165.343] [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: 11/12/2022] Open
Abstract
Abstract
Background
Smoking tobacco poses a serious risk of early preventable death and disease for women living with socioeconomic disadvantage (SED). A smoking cessation programme ‘We Can Quit' (WCQ) tailored to women living in four SED areas developed in Ireland included group support delivered by trained lay local women and free nicotine replacement therapy (NRT). The intervention was pilot tested in a community-based, cluster randomised controlled trial, ‘We Can Quit 2'. Results of an embedded process evaluation to assess feasibility and acceptability of the programme and trial processes are presented.
Methods
The design was qualitative using the Medical Research Council's (MRC) process evaluation framework. Semi-structured interviews with trial participants (N = 18) and Community Facilitators (CFs) who delivered WCQ (N = 8) were conducted. An inductive approach was used and data were analysed using thematic coding.
Results
Peer-modelling, a non-judgemental environment, and CFs supportive role were viewed as facilitative elements of group support. Potential for broader message diffusion into the social networks of participating women was observed. Participants reported that free access to NRT was helpful for cessation. Some participants expressed concerns about NRT side effects. Community pharmacists provided important guidance relating to NRT and additional support between group sessions. Provision of a saliva samples proved challenging. Low literacy was a barrier to engagement with the programme and completion of trial-related materials. Hypothetical scenarios of direct or indirect observational fidelity assessment for a definitive trial (DT) were acceptable.
Conclusions
The MRC framework proved useful to capture the experience of women smokers in SED areas of engaging with a community-based smoking cessation trial. Programme and trial-related processes were feasible and acceptable. A future DT will need to address low literacy.
Key messages
A group-based stop-smoking programme including free NRT was acceptable and feasible to programme deliverers and women smokers living in disadvantaged communities. Women’s low literacy was a barrier to engagement with trial and completion of programme materials.
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Affiliation(s)
- C Darker
- Public Health & Primary Care, Institute of Population Health, Trinity College Dublin, Dublin, Ireland
| | - E Burke
- Public Health & Primary Care, Institute of Population Health, Trinity College Dublin, Dublin, Ireland
| | - S Castello
- Public Health & Primary Care, Institute of Population Health, Trinity College Dublin, Dublin, Ireland
| | - K O'Sullivan
- Public Health & Primary Care, Institute of Population Health, Trinity College Dublin, Dublin, Ireland
| | - J Vance
- Community Programmes, Irish Cancer Society, Dublin, Ireland
| | - A Buggy
- Health Promotion and Improvement, Health Service Executive, Dublin, Ireland
| | | | - P Williams
- Patient/Public Representative, WCQ2 Trial, Dublin, Ireland
| | - F Dobbie
- Usher Institute and SPECTRUM Consortium, College of Medicine, University of Edinburgh, Edinburgh, UK
| | - C Hayes
- Public Health & Primary Care, Institute of Population Health, Trinity College Dublin, Dublin, Ireland
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3
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Wojtowicz WM, Vielmetter J, Fernandes RA, Siepe DH, Eastman CL, Chisholm GB, Cox S, Klock H, Anderson PW, Rue SM, Miller JJ, Glaser SM, Bragstad ML, Vance J, Lam AW, Lesley SA, Zinn K, Garcia KC. A Human IgSF Cell-Surface Interactome Reveals a Complex Network of Protein-Protein Interactions. Cell 2021; 182:1027-1043.e17. [PMID: 32822567 PMCID: PMC7440162 DOI: 10.1016/j.cell.2020.07.025] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 05/19/2020] [Accepted: 07/17/2020] [Indexed: 12/17/2022]
Abstract
Cell-surface protein-protein interactions (PPIs) mediate cell-cell communication, recognition, and responses. We executed an interactome screen of 564 human cell-surface and secreted proteins, most of which are immunoglobulin superfamily (IgSF) proteins, using a high-throughput, automated ELISA-based screening platform employing a pooled-protein strategy to test all 318,096 PPI combinations. Screen results, augmented by phylogenetic homology analysis, revealed ∼380 previously unreported PPIs. We validated a subset using surface plasmon resonance and cell binding assays. Observed PPIs reveal a large and complex network of interactions both within and across biological systems. We identified new PPIs for receptors with well-characterized ligands and binding partners for “orphan” receptors. New PPIs include proteins expressed on multiple cell types and involved in diverse processes including immune and nervous system development and function, differentiation/proliferation, metabolism, vascularization, and reproduction. These PPIs provide a resource for further biological investigation into their functional relevance and may offer new therapeutic drug targets. Human IgSF interactome reveals complex network of cell-surface protein interactions Phylogenetic homology analysis predicts protein-protein interactions ∼380 previously unknown protein-protein interactions identified Deorphanization of receptors and new binding partners for well-studied receptors
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Affiliation(s)
- Woj M Wojtowicz
- Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, CA 94305, USA.
| | - Jost Vielmetter
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Ricardo A Fernandes
- Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Dirk H Siepe
- Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, CA 94305, USA; Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Catharine L Eastman
- Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Gregory B Chisholm
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Sarah Cox
- The Genomics Institute of the Novartis Research Foundation, San Diego, CA 92121, USA
| | - Heath Klock
- The Genomics Institute of the Novartis Research Foundation, San Diego, CA 92121, USA
| | - Paul W Anderson
- The Genomics Institute of the Novartis Research Foundation, San Diego, CA 92121, USA
| | - Sarah M Rue
- The Genomics Institute of the Novartis Research Foundation, San Diego, CA 92121, USA
| | - Jessica J Miller
- The Genomics Institute of the Novartis Research Foundation, San Diego, CA 92121, USA
| | - Scott M Glaser
- The Genomics Institute of the Novartis Research Foundation, San Diego, CA 92121, USA
| | - Melisa L Bragstad
- The Genomics Institute of the Novartis Research Foundation, San Diego, CA 92121, USA
| | - Julie Vance
- The Genomics Institute of the Novartis Research Foundation, San Diego, CA 92121, USA
| | - Annie W Lam
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Scott A Lesley
- The Genomics Institute of the Novartis Research Foundation, San Diego, CA 92121, USA
| | - Kai Zinn
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - K Christopher Garcia
- Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, CA 94305, USA; Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Structural Biology, Stanford University School of Medicine, Stanford, CA 94305, USA.
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4
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Moriarty P, Dutton JA, Gorby L, Vance J, Ali S, Zhao A, Khilla N, Alejandro M, Rodriguez J, Rajadhyaksha M, Andisik M, Gipe D, Zhang Y. Evaluating the effect of lipid-apheresis on evinacumab and angiopoietin-like 3 (ANGPTL3) levels. Atherosclerosis 2020. [DOI: 10.1016/j.atherosclerosis.2020.10.119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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5
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Vance J, Gilani SM. Thyroid cytopathology: updates and molecular testing. Pathologica 2019; 111:51-57. [PMID: 31388195 PMCID: PMC8186012 DOI: 10.32074/1591-951x-10-19] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 05/25/2019] [Indexed: 11/30/2022] Open
Abstract
The utility of fine needle aspiration (FNA) is well described in the context of evaluating thyroid lesions. Among the various international systems of classification of thyroid cytology, the Bethesda System for Reporting Thyroid Cytopathology (TBSRTC) has also provided a sound framework to standardize the reporting of FNA cytology results. New molecular evidence and clinical studies demonstrated the need for revision of the nomenclature resulting in introduction of new categories, such as the noninvasive follicular thyroid neoplasms with papillary-like nuclear features (NIFTP). Indeterminate thyroid cytology results pose a challenge for further management and the continued development of molecular markers may aid in the management of indeterminate thyroid lesions.
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Affiliation(s)
- J Vance
- Department of Medical Education, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, U.S.A
| | - S M Gilani
- Department of Pathology, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, U.S.A
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6
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Ting PY, Parker AE, Lee JS, Trussell C, Sharif O, Luna F, Federe G, Barnes SW, Walker JR, Vance J, Gao MY, Klock HE, Clarkson S, Russ C, Miraglia LJ, Cooke MP, Boitano AE, McNamara P, Lamb J, Schmedt C, Snead JL. Guide Swap enables genome-scale pooled CRISPR-Cas9 screening in human primary cells. Nat Methods 2018; 15:941-946. [PMID: 30297964 DOI: 10.1038/s41592-018-0149-1] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [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: 03/20/2018] [Accepted: 08/10/2018] [Indexed: 12/21/2022]
Abstract
CRISPR-Cas9 screening allows genome-wide interrogation of gene function. Currently, to achieve the high and uniform Cas9 expression desirable for screening, one needs to engineer stable and clonal Cas9-expressing cells-an approach that is not applicable in human primary cells. Guide Swap permits genome-scale pooled CRISPR-Cas9 screening in human primary cells by exploiting the unexpected finding that editing by lentivirally delivered, targeted guide RNAs (gRNAs) occurs efficiently when Cas9 is introduced in complex with nontargeting gRNA. We validated Guide Swap in depletion and enrichment screens in CD4+ T cells. Next, we implemented Guide Swap in a model of ex vivo hematopoiesis, and identified known and previously unknown regulators of CD34+ hematopoietic stem and progenitor cell (HSPC) expansion. We anticipate that this platform will be broadly applicable to other challenging cell types, and thus will enable discovery in previously inaccessible but biologically relevant human primary cell systems.
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Affiliation(s)
- Pamela Y Ting
- Genomics Institute of the Novartis Research Foundation, San Diego, CA, USA
- Novartis Institutes for BioMedical Research, Cambridge, MA, USA
| | - Albert E Parker
- Genomics Institute of the Novartis Research Foundation, San Diego, CA, USA
- Celgene, San Diego, CA, USA
| | - J Scott Lee
- Genomics Institute of the Novartis Research Foundation, San Diego, CA, USA
| | - Chris Trussell
- Genomics Institute of the Novartis Research Foundation, San Diego, CA, USA
| | - Orzala Sharif
- Genomics Institute of the Novartis Research Foundation, San Diego, CA, USA
| | - Fabio Luna
- Genomics Institute of the Novartis Research Foundation, San Diego, CA, USA
| | - Glenn Federe
- Genomics Institute of the Novartis Research Foundation, San Diego, CA, USA
| | - S Whitney Barnes
- Genomics Institute of the Novartis Research Foundation, San Diego, CA, USA
| | - John R Walker
- Genomics Institute of the Novartis Research Foundation, San Diego, CA, USA
| | - Julie Vance
- Genomics Institute of the Novartis Research Foundation, San Diego, CA, USA
| | - Mu-Yun Gao
- Genomics Institute of the Novartis Research Foundation, San Diego, CA, USA
| | - Heath E Klock
- Genomics Institute of the Novartis Research Foundation, San Diego, CA, USA
- Merck, Cambridge, MA, USA
| | - Scott Clarkson
- Novartis Institutes for BioMedical Research, Cambridge, MA, USA
| | - Carsten Russ
- Novartis Institutes for BioMedical Research, Cambridge, MA, USA
| | - Loren J Miraglia
- Genomics Institute of the Novartis Research Foundation, San Diego, CA, USA
| | - Michael P Cooke
- Genomics Institute of the Novartis Research Foundation, San Diego, CA, USA
- Magenta Therapeutics, Cambridge, MA, USA
| | - Anthony E Boitano
- Genomics Institute of the Novartis Research Foundation, San Diego, CA, USA
- Magenta Therapeutics, Cambridge, MA, USA
| | - Peter McNamara
- Genomics Institute of the Novartis Research Foundation, San Diego, CA, USA
| | - John Lamb
- Genomics Institute of the Novartis Research Foundation, San Diego, CA, USA
| | - Christian Schmedt
- Genomics Institute of the Novartis Research Foundation, San Diego, CA, USA
| | - Jennifer L Snead
- Genomics Institute of the Novartis Research Foundation, San Diego, CA, USA.
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7
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Pericak-Vance M, Rajabli F, Feliciano-Astacio B, Celis K, Hamilton-Nelson K, Adams L, Rodgriguez A, Byrd G, Vance J, Cuccuro M, Haines J, Beecham G. African haplotypic background mitigates the effect of apoe ε4 risk allele in alzheimer disease. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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8
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Grünewald J, Jin Y, Vance J, Read J, Wang X, Wan Y, Zhou H, Ou W, Klock HE, Peters EC, Uno T, Brock A, Geierstanger BH. Optimization of an Enzymatic Antibody-Drug Conjugation Approach Based on Coenzyme A Analogs. Bioconjug Chem 2017; 28:1906-1915. [PMID: 28590752 DOI: 10.1021/acs.bioconjchem.7b00236] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Phosphopantetheine transferases (PPTases) can be used to efficiently prepare site-specific antibody-drug conjugates (ADCs) by enzymatically coupling coenzyme A (CoA)-linker payloads to 11-12 amino acid peptide substrates inserted into antibodies. Here, a two-step strategy is established wherein in a first step, CoA analogs with various bioorthogonal reactivities are enzymatically installed on the antibody for chemical conjugation with a cytotoxic payload in a second step. Because of the high structural similarity of these CoA analogs to the natural PPTase substrate CoA-SH, the first step proceeds very efficiently and enables the use of peptide tags as short as 6 amino acids compared to the 11-12 amino acids required for efficient one-step coupling of the payload molecule. Furthermore, two-step conjugation provides access to diverse linker chemistries and spacers of varying lengths. The potency of the ADCs was largely independent of linker architecture. In mice, proteolytic cleavage was observed for some C-terminally linked auristatin payloads. The in vivo stability of these ADCs was significantly improved by reduction of the linker length. In addition, linker stability was found to be modulated by attachment site, and this, together with linker length, provides an opportunity for maximizing ADC stability without sacrificing potency.
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Affiliation(s)
- Jan Grünewald
- Genomics Institute of the Novartis Research Foundation (GNF) , 10675 John Jay Hopkins Drive, San Diego, California 92121, United States
| | - Yunho Jin
- Genomics Institute of the Novartis Research Foundation (GNF) , 10675 John Jay Hopkins Drive, San Diego, California 92121, United States
| | - Julie Vance
- Genomics Institute of the Novartis Research Foundation (GNF) , 10675 John Jay Hopkins Drive, San Diego, California 92121, United States
| | - Jessica Read
- Genomics Institute of the Novartis Research Foundation (GNF) , 10675 John Jay Hopkins Drive, San Diego, California 92121, United States
| | - Xing Wang
- Genomics Institute of the Novartis Research Foundation (GNF) , 10675 John Jay Hopkins Drive, San Diego, California 92121, United States
| | - Yongqin Wan
- Genomics Institute of the Novartis Research Foundation (GNF) , 10675 John Jay Hopkins Drive, San Diego, California 92121, United States
| | - Huanfang Zhou
- Genomics Institute of the Novartis Research Foundation (GNF) , 10675 John Jay Hopkins Drive, San Diego, California 92121, United States
| | - Weijia Ou
- Genomics Institute of the Novartis Research Foundation (GNF) , 10675 John Jay Hopkins Drive, San Diego, California 92121, United States
| | - Heath E Klock
- Genomics Institute of the Novartis Research Foundation (GNF) , 10675 John Jay Hopkins Drive, San Diego, California 92121, United States
| | - Eric C Peters
- Genomics Institute of the Novartis Research Foundation (GNF) , 10675 John Jay Hopkins Drive, San Diego, California 92121, United States
| | - Tetsuo Uno
- Genomics Institute of the Novartis Research Foundation (GNF) , 10675 John Jay Hopkins Drive, San Diego, California 92121, United States
| | - Ansgar Brock
- Genomics Institute of the Novartis Research Foundation (GNF) , 10675 John Jay Hopkins Drive, San Diego, California 92121, United States
| | - Bernhard H Geierstanger
- Genomics Institute of the Novartis Research Foundation (GNF) , 10675 John Jay Hopkins Drive, San Diego, California 92121, United States
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9
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Grünewald J, Klock HE, Cellitti SE, Bursulaya B, McMullan D, Jones DH, Chiu HP, Wang X, Patterson P, Zhou H, Vance J, Nigoghossian E, Tong H, Daniel D, Mallet W, Ou W, Uno T, Brock A, Lesley SA, Geierstanger BH. Efficient Preparation of Site-Specific Antibody-Drug Conjugates Using Phosphopantetheinyl Transferases. Bioconjug Chem 2015; 26:2554-62. [PMID: 26588668 DOI: 10.1021/acs.bioconjchem.5b00558] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Post-translational modification catalyzed by phosphopantetheinyl transferases (PPTases) has previously been used to site-specifically label proteins with structurally diverse molecules. PPTase catalysis results in covalent modification of a serine residue in acyl/peptidyl carrier proteins and their surrogate substrates which are typically fused to the N- or C-terminus. To test the utility of PPTases for preparing antibody-drug conjugates (ADCs), we inserted 11 and 12-mer PPTase substrate sequences at 110 constant region loop positions of trastuzumab. Using Sfp-PPTase, 63 sites could be efficiently labeled with an auristatin toxin, resulting in 95 homogeneous ADCs. ADCs labeled in the CH1 domain displayed in general excellent pharmacokinetic profiles and negligible drug loss. A subset of CH2 domain conjugates underwent rapid clearance in mouse pharmacokinetic studies. Rapid clearance correlated with lower thermal stability of the particular antibodies. Independent of conjugation site, almost all ADCs exhibited subnanomolar in vitro cytotoxicity against HER2-positive cell lines. One selected ADC was shown to induce tumor regression in a xenograft model at a single dose of 3 mg/kg, demonstrating that PPTase-mediated conjugation is suitable for the production of highly efficacious and homogeneous ADCs.
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Affiliation(s)
- Jan Grünewald
- Genomics Institute of the Novartis Research Foundation , 10675 John-Jay-Hopkins Drive, San Diego, California 92121-1125, United States
| | - Heath E Klock
- Genomics Institute of the Novartis Research Foundation , 10675 John-Jay-Hopkins Drive, San Diego, California 92121-1125, United States
| | - Susan E Cellitti
- Genomics Institute of the Novartis Research Foundation , 10675 John-Jay-Hopkins Drive, San Diego, California 92121-1125, United States
| | - Badry Bursulaya
- Genomics Institute of the Novartis Research Foundation , 10675 John-Jay-Hopkins Drive, San Diego, California 92121-1125, United States
| | - Daniel McMullan
- Genomics Institute of the Novartis Research Foundation , 10675 John-Jay-Hopkins Drive, San Diego, California 92121-1125, United States
| | - David H Jones
- Genomics Institute of the Novartis Research Foundation , 10675 John-Jay-Hopkins Drive, San Diego, California 92121-1125, United States
| | - Hsien-Po Chiu
- Genomics Institute of the Novartis Research Foundation , 10675 John-Jay-Hopkins Drive, San Diego, California 92121-1125, United States
| | - Xing Wang
- Genomics Institute of the Novartis Research Foundation , 10675 John-Jay-Hopkins Drive, San Diego, California 92121-1125, United States
| | - Paula Patterson
- Genomics Institute of the Novartis Research Foundation , 10675 John-Jay-Hopkins Drive, San Diego, California 92121-1125, United States
| | - Huanfang Zhou
- Genomics Institute of the Novartis Research Foundation , 10675 John-Jay-Hopkins Drive, San Diego, California 92121-1125, United States
| | - Julie Vance
- Genomics Institute of the Novartis Research Foundation , 10675 John-Jay-Hopkins Drive, San Diego, California 92121-1125, United States
| | - Edward Nigoghossian
- Genomics Institute of the Novartis Research Foundation , 10675 John-Jay-Hopkins Drive, San Diego, California 92121-1125, United States
| | - Hung Tong
- Genomics Institute of the Novartis Research Foundation , 10675 John-Jay-Hopkins Drive, San Diego, California 92121-1125, United States
| | - Dylan Daniel
- Novartis Institutes for BioMedical Research , 4560 Horton Street, Emeryville, California 94608-2916, United States
| | - William Mallet
- Novartis Institutes for BioMedical Research , 4560 Horton Street, Emeryville, California 94608-2916, United States
| | - Weijia Ou
- Genomics Institute of the Novartis Research Foundation , 10675 John-Jay-Hopkins Drive, San Diego, California 92121-1125, United States
| | - Tetsuo Uno
- Genomics Institute of the Novartis Research Foundation , 10675 John-Jay-Hopkins Drive, San Diego, California 92121-1125, United States
| | - Ansgar Brock
- Genomics Institute of the Novartis Research Foundation , 10675 John-Jay-Hopkins Drive, San Diego, California 92121-1125, United States
| | - Scott A Lesley
- Genomics Institute of the Novartis Research Foundation , 10675 John-Jay-Hopkins Drive, San Diego, California 92121-1125, United States
| | - Bernhard H Geierstanger
- Genomics Institute of the Novartis Research Foundation , 10675 John-Jay-Hopkins Drive, San Diego, California 92121-1125, United States
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10
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Dharmarajan T, Dharmarajan T, Mahajan D, Zambrano A, Fischer R, Agarwal B, Lebelt A, Patel M, Vance J, Norkus E. Sliding-Scale Insulin (SSI) vs. Basal/Basal-Bolus Insulin (B-BI) Therapy in Long-Term Care (LTC): Results from a 21-Day Intervention Trial. J Am Med Dir Assoc 2015. [DOI: 10.1016/j.jamda.2015.01.063] [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: 10/24/2022]
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11
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Das D, Lee WS, Grant JC, Chiu HJ, Farr CL, Vance J, Klock HE, Knuth MW, Miller MD, Elsliger MA, Deacon AM, Godzik A, Lesley SA, Kornfeld S, Wilson IA. Structure and function of the DUF2233 domain in bacteria and in the human mannose 6-phosphate uncovering enzyme. J Biol Chem 2013; 288:16789-16799. [PMID: 23572527 DOI: 10.1074/jbc.m112.434977] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
DUF2233, a domain of unknown function (DUF), is present in many bacterial and several viral proteins and was also identified in the mammalian transmembrane glycoprotein N-acetylglucosamine-1-phosphodiester α-N-acetylglucosaminidase ("uncovering enzyme" (UCE)). We report the crystal structure of BACOVA_00430, a 315-residue protein from the human gut bacterium Bacteroides ovatus that is the first structural representative of the DUF2233 protein family. A notable feature of this structure is the presence of a surface cavity that is populated by residues that are highly conserved across the entire family. The crystal structure was used to model the luminal portion of human UCE (hUCE), which is involved in targeting of lysosomal enzymes. Mutational analysis of several residues in a highly conserved surface cavity of hUCE revealed that they are essential for function. The bacterial enzyme (BACOVA_00430) has ∼1% of the catalytic activity of hUCE toward the substrate GlcNAc-P-mannose, the precursor of the Man-6-P lysosomal targeting signal. GlcNAc-1-P is a poor substrate for both enzymes. We conclude that, for at least a subset of proteins in this family, DUF2233 functions as a phosphodiester glycosidase.
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Affiliation(s)
- Debanu Das
- Joint Center for Structural Genomics, Menlo Park, California 94025; Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025
| | - Wang-Sik Lee
- Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri 63110
| | - Joanna C Grant
- Joint Center for Structural Genomics, Menlo Park, California 94025; Protein Sciences Department, Genomics Institute of the Novartis Research Foundation, San Diego, California 92121
| | - Hsiu-Ju Chiu
- Joint Center for Structural Genomics, Menlo Park, California 94025; Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025
| | - Carol L Farr
- Joint Center for Structural Genomics, Menlo Park, California 94025; Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037
| | - Julie Vance
- Joint Center for Structural Genomics, Menlo Park, California 94025; Protein Sciences Department, Genomics Institute of the Novartis Research Foundation, San Diego, California 92121
| | - Heath E Klock
- Joint Center for Structural Genomics, Menlo Park, California 94025; Protein Sciences Department, Genomics Institute of the Novartis Research Foundation, San Diego, California 92121
| | - Mark W Knuth
- Joint Center for Structural Genomics, Menlo Park, California 94025; Protein Sciences Department, Genomics Institute of the Novartis Research Foundation, San Diego, California 92121
| | - Mitchell D Miller
- Joint Center for Structural Genomics, Menlo Park, California 94025; Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025
| | - Marc-André Elsliger
- Joint Center for Structural Genomics, Menlo Park, California 94025; Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037
| | - Ashley M Deacon
- Joint Center for Structural Genomics, Menlo Park, California 94025; Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025
| | - Adam Godzik
- Joint Center for Structural Genomics, Menlo Park, California 94025; Program on Bioinformatics and Systems Biology, Sanford-Burnham Medical Research Institute, La Jolla, California 92037; Center for Research in Biological Systems, University of California San Diego, La Jolla, California 92093
| | - Scott A Lesley
- Joint Center for Structural Genomics, Menlo Park, California 94025; Protein Sciences Department, Genomics Institute of the Novartis Research Foundation, San Diego, California 92121; Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037
| | - Stuart Kornfeld
- Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri 63110.
| | - Ian A Wilson
- Joint Center for Structural Genomics, Menlo Park, California 94025; Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037.
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12
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Vance J, Bademci G, Nuytemans K, Beecham G, Edwards Y, Singer C, Nahab F, Rhodes S, Ritz B, Zuchner S, Haines J, Scott W. Identification of Rare Variants in Parkinson Disease Using Next-Generation Sequencing (S22.007). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.s22.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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13
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Zuchner S, Gonzalez M, Schuele R, Siskind C, Powell E, Montenegro G, Shengru G, Blanton S, Beecham G, Speziani F, Deconinck T, Young P, Kennerson M, Nicholson G, De Jonghe P, Vance J, Schoels L, Menezes M, Herrmann D, Scherer S, Reilly M, Shy M, Zuchner S. Gene Identification in Axonopathies by Applying Massive Whole Exome Sequencing (S27.005). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.s27.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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14
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Hahn S, Letvak S, Powell K, Christianson C, Wallace D, Speer M, Lietz P, Blanton S, Vance J, Pericak-Vance M, Henrich V. A Community’s Awareness and Perceptions of Genomic Medicine. Public Health Genomics 2010; 13:63-71. [DOI: 10.1159/000218712] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2008] [Accepted: 03/05/2009] [Indexed: 11/19/2022] Open
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15
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Chung RH, Edwards T, Scott W, Almonte C, Burt A, Powell E, Beecham G, Konidari I, Pericak-Vance M, Haines J, Zuchner S, Wang G, Wang L, Vance J, Martin E. P1.126 Developing a risk model for Parkinson disease. Parkinsonism Relat Disord 2009. [DOI: 10.1016/s1353-8020(09)70248-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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17
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Jensen J, Vance J, Zelinski-Wooten M, Stouffer R. The Use of Controlled-Ovulation of the Dominant Follicle to Access Oocyte Maturation During Natural Menstrual Cycles in Rhesus Macaques. Fertil Steril 2005. [DOI: 10.1016/j.fertnstert.2005.07.418] [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: 10/25/2022]
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18
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Xu F, Vance J, Jensen J. The Expression and Localization of Phosphodiesterase 3A and 4A in the Primate Ovary. Fertil Steril 2005. [DOI: 10.1016/j.fertnstert.2005.07.060] [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: 10/25/2022]
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19
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Jensen J, Zelinski-Wooten M, Schwinof K, Vance J, Stouffer R. The Phosphodiesterase 3 inhibitor org 9935 inhibits oocyte maturation during gonadotropin-stimulated ovarian cycles in Rhesus macaques. Fertil Steril 2004. [DOI: 10.1016/j.fertnstert.2004.07.267] [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: 10/26/2022]
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20
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Hauser MA, Li YJ, Takeuchi S, Walters R, Noureddine M, Maready M, Darden T, Hulette C, Martin E, Hauser E, Xu H, Schmechel D, Stenger JE, Dietrich F, Vance J. Genomic convergence: identifying candidate genes for Parkinson's disease by combining serial analysis of gene expression and genetic linkage. Hum Mol Genet 2003. [DOI: 10.1093/hmg/ddg070] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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21
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Rampoldi L, Dobson-Stone C, Rubio JP, Danek A, Chalmers RM, Wood NW, Verellen C, Ferrer X, Malandrini A, Fabrizi GM, Brown R, Vance J, Pericak-Vance M, Rudolf G, Carrè S, Alonso E, Manfredi M, Németh AH, Monaco AP. A conserved sorting-associated protein is mutant in chorea-acanthocytosis. Nat Genet 2001; 28:119-20. [PMID: 11381253 DOI: 10.1038/88821] [Citation(s) in RCA: 212] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Chorea-acanthocytosis (CHAC, MIM 200150) is an autosomal recessive neurodegenerative disorder characterized by the gradual onset of hyperkinetic movements and abnormal erythrocyte morphology (acanthocytosis). Neurological findings closely resemble those observed in Huntington disease. We identified a gene in the CHAC critical region and found 16 different mutations in individuals with chorea-acanthocytosis. CHAC encodes an evolutionarily conserved protein that is probably involved in protein sorting.
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Affiliation(s)
- L Rampoldi
- The Wellcome Trust Centre for Human Genetics, Roosevelt Drive, Oxford, United Kingdom
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22
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Vance J, Kaldy J. Focus on caregiving. When it's time to call the doctor.... Provider 2001; 27:43-4. [PMID: 11840622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Affiliation(s)
- J Vance
- American Medical Directors Association, Columbia, Md., USA
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23
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Mercer JA, Vance J, Hreljac A. ATTENUATION OF LEG IMPACTS DURING HIGH SPEED RUNNING. Med Sci Sports Exerc 2001. [DOI: 10.1097/00005768-200105001-00248] [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]
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24
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Nelson EA, Taylor BJ, Jenik A, Vance J, Walmsley K, Pollard K, Freemantle M, Ewing D, Einspieler C, Engele H, Ritter P, Hildes-Ripstein GE, Arancibia M, Ji X, Li H, Bedard C, Helweg-Larsen K, Sidenius K, Karlqvist S, Poets C, Barko E, Kiberd B, McDonnell M, Donzelli G, Piumelli R, Landini L, Giustardi A, Nishida H, Fukui S, Sawaguchi T, Ino M, Horiuchi T, Oguchi K, Williams S, Perk Y, Tappin D, Milerad J, Wennborg M, Aryayev N, Nepomyashchaya V. International Child Care Practices Study: infant sleeping environment. Early Hum Dev 2001; 62:43-55. [PMID: 11245994 DOI: 10.1016/s0378-3782(01)00116-5] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
BACKGROUND The International Child Care Practices Study (ICCPS) has collected descriptive data from 21 centres in 17 countries. In this report, data are presented on the infant sleeping environment with the main focus being sudden infant death syndrome (SIDS) risk factors (bedsharing and infant using a pillow) and protective factors (infant sharing a room with adult) that are not yet well established in the literature. METHODS Using a standardised protocol, parents of infants were surveyed at birth by interview and at 3 months of age mainly by postal questionnaire. Centres were grouped according to geographic location. Also indicated was the level of SIDS awareness in the community, i.e. whether any campaigns or messages to "reduce the risks of SIDS" were available at the time of the survey. RESULTS Birth interview data were available for 5488 individual families and 4656 (85%) returned questionnaires at 3 months. Rates of bedsharing varied considerably (2-88%) and it appeared to be more common in the samples with a lower awareness of SIDS, but not necessarily a high SIDS rate. Countries with higher rates of bedsharing appeared to have a greater proportion of infants bedsharing for a longer duration (>5 h). Rates of room sharing varied (58-100%) with some of the lowest rates noted in centres with a higher awareness of SIDS. Rates of pillow use ranged from 4% to 95%. CONCLUSIONS It is likely that methods of bedsharing differ cross-culturally, and although further details were sought on different bedsharing practices, it was not possible to build up a composite picture of "typical" bedsharing practices in these different communities. These data highlight interesting patterns in child care in these diverse populations. Although these results should not be used to imply that any particular child care practice either increases or decreases the risk of SIDS, these findings should help to inject caution into the process of developing SIDS prevention campaigns for non-Western cultures.
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Affiliation(s)
- E A Nelson
- Department of Paediatrics, The Chinese University of Hong Kong, 6/F Clinical Science Building, Prince of Wales Hospital, Shatin, Hong Kong, People's Republic of China.
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25
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Zhao Y, McCabe JB, Vance J, Berthiaume LG. Palmitoylation of apolipoprotein B is required for proper intracellular sorting and transport of cholesteroyl esters and triglycerides. Mol Biol Cell 2000; 11:721-34. [PMID: 10679026 PMCID: PMC14805 DOI: 10.1091/mbc.11.2.721] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Apolipoprotein B (apoB) is an essential component of chylomicrons, very low density lipoproteins, and low density lipoproteins. ApoB is a palmitoylated protein. To investigate the role of palmitoylation in lipoprotein function, a palmitoylation site was mapped to Cys-1085 and removed by mutagenesis. Secreted lipoprotein particles formed by nonpalmitoylated apoB were smaller and denser and failed to assemble a proper hydrophobic core. Indeed, the relative concentrations of nonpolar lipids were three to four times lower in lipoprotein particles containing mutant apoB compared with those containing wild-type apoB, whereas levels of polar lipids isolated from wild-type or mutant apoB lipoprotein particles appeared identical. Palmitoylation localized apoB to large vesicular structures corresponding to a subcompartment of the endoplasmic reticulum, where addition of neutral lipids was postulated to occur. In contrast, nonpalmitoylated apoB was concentrated in a dense perinuclear area corresponding to the Golgi compartment. The involvement of palmitoylation as a structural requirement for proper assembly of the hydrophobic core of the lipoprotein particle and its intracellular sorting represent novel roles for this posttranslational modification.
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Affiliation(s)
- Y Zhao
- Departments of Cell Biology and Biochemistry, University of Alberta, Edmonton, Alberta T6G 2S2, Canada
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26
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Melvin EC, George TM, Worley G, Franklin A, Mackey J, Viles K, Shah N, Drake CR, Enterline DS, McLone D, Nye J, Oakes WJ, McLaughlin C, Walker ML, Peterson P, Brei T, Buran C, Aben J, Ohm B, Bermans I, Qumsiyeh M, Vance J, Pericak-Vance MA, Speer MC. Genetic studies in neural tube defects. NTD Collaborative Group. Pediatr Neurosurg 2000; 32:1-9. [PMID: 10765131 DOI: 10.1159/000028889] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Neural tube defects (NTD) are one of the most common birth defects and are caused by both environmental and genetic factors. The approach to identifying the genes predisposing to NTD, through linkage analysis and candidate gene analysis, is reviewed along with characteristics of a large, nationally ascertained cohort of families. Results from specific assessments of p53, PAX3 and MTHFR failed to suggest that these genes play a major role in NTD development in these families. Advances in genetic laboratory and statistical techniques have made this a prime opportunity for investigation into the causes of complex disorders, such as NTD. However, traditional approaches may prove to be challenging due to the difficulty of ascertaining samplable multiplex families.
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Affiliation(s)
- E C Melvin
- Duke University Medical Center, Durham, NC 27710, USA
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27
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Abstract
Most organisms transport or store neutral lipids as lipid bodies - lipid droplets that usually are bounded by specific proteins and (phospho)lipid. Neutral-lipid bodies vary considerably in their morphology and are associated with an extremely diverse range of proteins. However, the mechanisms by which they are generated in plants, animals and microorganisms appear to share many common features: lipid bodies probably arise from microdomains of the endoplasmic reticulum (or the plasma membrane in prokaryotes) that contain lipid-biosynthesis enzymes, and their synthesis and size appear to be controlled by specific protein components.
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Affiliation(s)
- D J Murphy
- Dept of Brassica and Oilseeds Research, John Innes Centre, Norwich Research Park, Norwich, UK NR4 7UH.
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28
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De Chaves EP, Bussiére M, Campenot R, Vance D, Vance J. Inhibition of neurite growth by ceramide in rat sympathetic neurons. Ann N Y Acad Sci 1998; 845:405. [PMID: 9668375 DOI: 10.1111/j.1749-6632.1998.tb09695.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- E P De Chaves
- Lipid and Lipoprotein Group, University of Alberta, Edmonton, Canada
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29
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Cordasco EM, Zenz C, Ferguson E, Cordasco EM, MacIntyre W, Cordasco-Reaper MA, van der Kuyp F, Lubs P, Burns DE, Beerell F, Vance J, Saric M, Taylor R, del Greco F, Legaspi Valasco JA. Environmental pulmonary edema: an update. Rev Environ Health 1998; 13:27-57. [PMID: 9718621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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30
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Rubio JP, Danek A, Stone C, Chalmers R, Wood N, Verellen C, Ferrer X, Malandrini A, Fabrizi GM, Manfredi M, Vance J, Pericak-Vance M, Brown R, Rudolf G, Picard F, Alonso E, Brin M, Németh AH, Farrall M, Monaco AP. Chorea-acanthocytosis: genetic linkage to chromosome 9q21. Am J Hum Genet 1997; 61:899-908. [PMID: 9382101 PMCID: PMC1715977 DOI: 10.1086/514876] [Citation(s) in RCA: 71] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Chorea-acanthocytosis (CHAC) is a rare autosomal recessive disorder characterized by progressive neurodegeneration and unusual red-cell morphology (acanthocytosis), with onset in the third to fifth decade of life. Neurological impairment with acanthocytosis (neuroacanthocytosis) also is seen in abetalipoproteinemia and X-linked McLeod syndrome. Whereas the molecular etiology of McLeod syndrome has been defined (Ho et al. 1994), that of CHAC is still unknown. In the absence of cytogenetic rearrangements, we initiated a genomewide scan for linkage in 11 families, segregating for CHAC, who are of diverse geographical origin. We report here that the disease is linked, in all families, to a 6-cM region of chromosome 9q21 that is flanked by the recombinant markers GATA89a11 and D9S1843. A maximum two-point LOD score of 7.1 (theta = .00) for D9S1867 was achieved, and the linked region has been confirmed by homozygosity-by-descent, in offspring from inbred families. These findings provide strong evidence for the involvement of a single locus for CHAC and are the first step in positional cloning of the disease gene.
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Affiliation(s)
- J P Rubio
- The Wellcome Trust Centre for Human Genetics, Oxford, United Kingdom
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31
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Weith A, Brodeur GM, Bruns GA, Matise TC, Mischke D, Nizetic D, Seldin MF, van Roy N, Vance J. Report of the second international workshop on human chromosome 1 mapping 1995. ACTA ACUST UNITED AC 1997. [PMID: 8978760 DOI: 10.1159/000134173] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- A Weith
- Research Institute of Molecular Pathology, Vienna, Austria
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32
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Timmerman V, De Jonghe P, Spoelders P, Simokovic S, Löfgren A, Nelis E, Vance J, Martin JJ, Van Broeckhoven C. Linkage and mutation analysis of Charcot-Marie-Tooth neuropathy type 2 families with chromosomes 1p35-p36 and Xq13. Neurology 1996; 46:1311-8. [PMID: 8628473 DOI: 10.1212/wnl.46.5.1311] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
A locus for autosomal dominant Charcot-Marie-Tooth disease type 2 (CMT2A) was assigned by linkage analysis to chromosome 1p35-p36. We examined 11 unrelated CMT2 families for linkage to CMT2A using short tandem repeat (STR) polymorphisms. Only one family showed suggestive evidence for linkage to 1p35-p36. Further, because of an overlap in electrophysiologic data between CMT2 and CMTX female patients, we screened 6 of 11 CMT2 families compatible with dominant X-linkage for mutations in the connexin 32 (Cx32) gene at Xq13. There was a Cx32 mutation in one family, whereas another family showed suggestive evidence for Xq13 linkage upon analysis with STR polymorphisms. Our results suggest that the CMT2A locus is a minor locus for CMT2, additional linkage studies are needed to localize other CMT2 loci, and Cx32 mutations may be the underlying genetic defect in some CMT2 families.
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Affiliation(s)
- V Timmerman
- Flemish Institute for Biotechnology, Born Bunge Foundation, Department of Biochemistry, Antwerpen, Belgium
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33
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Abstract
As more medical schools are providing primary care experiences for their students, competition among schools to recruit and retain volunteer community preceptors is increasing dramatically. The University of Illinois College of Medicine at Chicago competes for preceptors with six other major medical schools in the metropolitan area. Its Longitudinal Primary Care (LPC) Program is one of the largest programs of its kind in the country, with 320 preceptors at approximately 250 sites in metropolitan Chicago. By studying the literature, carefully reviewing their pilot program, and surveying preceptors about their motivations and needs, the authors have created a successful model for increasing and maintaining a pool of preceptors. This paper describes the development of this model and the specific methods used to recruit new preceptors (e.g., using a recruitment brochure), and to retain and reward preceptors (e.g., offering adjunct faculty positions, faculty development programs, etc.).
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Affiliation(s)
- R Foley
- Department of Medical Education, University of Illinois, Chicago College of Medicine 60612, USA
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34
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Vance J, Allen B, Bramlett P, Moffett I, McNulty M, Hamrick L, Brown B, Carraway R, Johnson M, Hill W, McClusky DO, Hethcox J. AlaHA's living legacy. Favorite memories from those who have lived our healthcare history. Healthc Ala 1996; 9:4-5, 7-11, 24. [PMID: 10164124] [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: 02/11/2023]
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35
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Chen W, Steenbergen C, Levy LA, Vance J, London RE, Murphy E. Measurement of free Ca2+ in sarcoplasmic reticulum in perfused rabbit heart loaded with 1,2-bis(2-amino-5,6-difluorophenoxy)ethane-N,N,N',N'-tetraacetic acid by 19F NMR. J Biol Chem 1996; 271:7398-403. [PMID: 8631764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Measurements of free calcium ion concentration in the sarcoplasmic reticulum ([Ca2+]SR) and an evaluation of its relationship to changes in cytosolic free calcium and energy state of the cell, as well as heterogeneity of the SR calcium pool, were performed using 19F NMR in Langendorff perfused rabbit hearts loaded with acetoxymethyl ester of 1,2-bis(2-amino-5,6-difluorophenoxy)ethane-N,N,N',N'-tetraacetic acid. We report a base-line time-average [Ca2+]SR value of 1.5 mM (n = 13) in the beating heart, similar to the value measured at diastole. We further report that [Ca2+]SR decreases by approximately 30% at the start of systole and that there is no evidence of spacial heterogeneity in [Ca2+]SR during the contraction cycle. However, there appears to be a heterogeneous response to SR calcium channel release activator (caffeine) and SR calcium-ATPase inhibitor (cyclopiazonic acid), consistent with studies suggesting that there are subpopulations of SR. Raising cytosolic free calcium by depolarizing the cell with 30 mM extracellular KCl, resulted in an increase in [Ca2+]SR; however, the calcium gradient was unchanged. Lowering cell phosphorylation potential, which would reduce the free energy available for the SR Ca2+-ATPase, leads to a decrease in the calcium gradient across the SR, but this reduced gradient was primarily due to an increase in cytosolic free calcium and not a net release of SR calcium.
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Affiliation(s)
- W Chen
- Laboratory of Molecular Biophysics, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina 27709, USA
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36
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Gilbert JR, Speer MC, Stajich J, Clancy R, Lewis K, Qiu H, Yamaoka L, Kumar A, Vance J, Stewart C. Exclusion mapping of chromosomal regions which cross hybridise to FSHD1A associated markers in FSHD1B. J Med Genet 1995; 32:770-3. [PMID: 8558552 PMCID: PMC1051697 DOI: 10.1136/jmg.32.10.770] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Facioscapulohumeral muscular dystrophy (FHSD) is a genetically heterogeneous, autosomal dominant primary disease of muscle. The predominant form of FSHD, which has been designated FSHD1A, has been localised to the 4q34 region of human chromosome 4. The disease locus (loci) for the remaining FSHD families, which are not linked to chromosome 4 and have been designated FSHD1B, has not yet been identified. The D4F104S1 marker which detects copies of a 3·2 kb tandem repeat (D4Z4) which contains several types of repetitive sequences, including Hox gene-like elements, has been shown to be closely linked to the chromosome 4 FHSD disease locus. The loss of an integral number of the 3·2 kb tandem repeats has been associated with FSHD1A. When hybridised to chromosomal spreads these sequences cross hybridise with heterochromatin on acrocentric chromosomes and specific areas of human chromosomes 1, 3, and 10. Potentially these specific regions of cross hybridisation may be linked to FSHD1B. To examine this possiblity we have carried out linkage studies in our largest FSHD1B family. In this paper we exclude these areas of specific cross hybridisation as disease loci for FSHD1B.
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MESH Headings
- Chromosome Mapping
- Chromosomes, Human, Pair 1
- Chromosomes, Human, Pair 10
- Chromosomes, Human, Pair 3
- Chromosomes, Human, Pair 4
- Crossing Over, Genetic
- Female
- Genetic Markers
- Humans
- Male
- Muscular Dystrophies/genetics
- Pedigree
- Repetitive Sequences, Nucleic Acid
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Affiliation(s)
- J R Gilbert
- Department of Medicine, Duke University Medical Center, Durham, North Carolina 27710, USA
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37
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Acharya U, Elkins K, Vance J, Malhotra V. Keeping Golgi membranes intact in the pericentriolar region of mammalian cells. Biochem Soc Trans 1995; 23:538-41. [PMID: 8566410 DOI: 10.1042/bst0230538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- U Acharya
- Biology Department, University of California, San Diego, La Jolla 92093-0347, USA
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38
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Abstract
Abnormalities in the relative concentrations of the components of surfactant have been implicated in prolonged expiratory apnoea (PEA) and sudden infant death syndrome (SIDS). Controversy has, however, surrounded these findings, as they may be secondary to terminal life events. In this study the physical properties of surfactant were measured in children with recurrent apparent life threatening events (ALTEs), PEA, and SIDS. Bronchial lavage samples were obtained from 21 children with recurrent ALTEs, two SIDS victims, and 26 control patients. Lipid components were immediately elutriated from these samples with liquid chloroform. The physical properties of the extracted surfactant were studied on a Langmuir trough in which the area (A) of the monolayer was cycled continuously as the surface tension (gamma) was measured by the Wilhelmy method using a platinum 'flag'. The investigators performing these tests were unaware of the clinical diagnosis. Twenty one of 23 patients displayed abnormal physical properties while seven of 26 controls displayed similar abnormalities. These abnormalities were partially inverted hysteresis (figure of eight) loops and inverted (anticlockwise) loops that also generally exhibited less hysteresis. Of the 26 controls 20 exhibited a wide hysteresis pattern that cycled in a normal (clockwise) direction. These differences were significantly different. It is concluded that children with recurrent ALTEs have definable abnormalities in the physical properties of surfactant and that these findings may provide a sensitive means of identifying those at risk of recurrent ALTEs and SIDS.
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Affiliation(s)
- I B Masters
- Respiratory Research Unit, Mater Children's Hospital, South Brisbane, Queensland, Australia
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39
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Stenger VA, Recchia C, Vance J, Pennington CH, Buffinger DR, Ziebarth RP. NMR measurement of superconducting-state spin susceptibility in alkali fullerides. Phys Rev B Condens Matter 1993; 48:9942-9944. [PMID: 10007266 DOI: 10.1103/physrevb.48.9942] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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40
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Liu W, Piechocki M, Shridhar V, Lyles G, Song Z, Nakamura Y, Drabkin H, Vance J, Smith DI. The isolation of a yeast artificial chromosome (YAC) contig extending for 2 megabases in the vicinity of the von Hippel Lindau disease gene. Hum Mol Genet 1993; 2:1177-82. [PMID: 8104627 DOI: 10.1093/hmg/2.8.1177] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Von Hippel Lindau disease (VHL) is a rare autosomal dominant disease associated with tumors and cysts in multiple organ systems. The VHL disease gene is tightly linked to the polymorphic DNA marker 233E2 (D3S720) and flanked by 479H4 (D3S719) on its telomeric and RAF1 on its centromeric side. Two additional markers, D3S1038 and D3S601, have also been identified, and these markers, like D3S720, are very tightly linked to VHL. Previously 93 cosmid clones were mapped to the larger region, 3p24.2-pter, surrounding the VHL disease gene. Using a Southern-based screening strategy on pools of YAC clones we have isolated a contig of overlapping YAC clones that extends about 0.7 megabase centromeric, and about 1.3 megabases telomeric of D3S720 and contains all three tightly linked VHL markers. Individual YACs in this contig were hybridized to grids containing cosmids localized between 3p24.2-pter and to several cosmids localized by fluorescent in situ hybridization (FISH) to 3p25. A total of 28 cosmids were positioned on this contig of overlapping YAC clones. We have also identified homologous YAC clones to many additional cosmid clones localized between 3p24.2-p25, although these have not yet been precisely localized relative to the contig of YAC clones. This contig of YAC clones probably contains the VHL disease gene and should facilitate the isolation and characterization of this gene.
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Affiliation(s)
- W Liu
- Wayne State University School of Medicine, Detroit, MI 48201
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41
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Affiliation(s)
- W Liu
- Wayne State University School of Medicine, Detroit, MI 48201
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42
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Vance J. Biosynthesis of membrane lipids in rat axons. Neurochem Int 1992. [DOI: 10.1016/0197-0186(92)91751-h] [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: 10/27/2022]
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43
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Abstract
The autosomal dominant macular dystrophies are a confusing group of poorly understood diseases. Linkage studies will greatly aid our classification of these disorders and hopefully provide insight into central retinal function and dysfunction such as occurs in age-related macular degeneration. North Carolina macular dystrophy is one such disease that has been amenable to linkage analysis because of the large pedigree size. Seventy-six polymorphic markers have been tested for linkage and exclusion data are presented.
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Affiliation(s)
- K W Small
- Department of Ophthalmology, Medical University of South Carolina, Charleston 29425
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44
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Vance J. Self-inflicted injury and illness. Nurs Mirror 1985; 161:28. [PMID: 3848944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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45
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Vance J. Malpractice insurance too high? Consider funding your own. South Hosp 1978; 46:18-9. [PMID: 10238599] [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: 02/12/2023]
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46
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Gault MH, Ahmed M, Symes AL, Vance J. Extraction of digoxin and its metabolites from urine and their separation by Sephadex LH-20 column chromatography. Clin Biochem 1976; 9:46-52. [PMID: 1248113 DOI: 10.1016/s0009-9120(76)80013-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The efficiency with which serveral solvent systems extract digoxin and its metabolites from urine has been studied and column chromatography using Sephadex LH-20 has been used to separate digoxin and its metabolites. These procedures have been evaluated and used to study the excretion of 3H-digoxin-12alpha and its metabolites in urines collected serially in 7 patients and in bile in one. The percentage of the radioactivity excreted as metabolites in urine and bile was found to reach a peak within the first day and then to gradualy decline to minimal amounts in patients with advanced renal failure as well as those with good renal function. The maximum percentage measured as metabolites in 4 patients with the most advanced renal failure was 10%.
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47
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48
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Stanford RW, Vance J. Correspondence. Br J Radiol 1958. [DOI: 10.1259/0007-1285-31-364-228-b] [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: 11/05/2022] Open
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49
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Stanford RW, Vance J. Correspondence. Br J Radiol 1956. [DOI: 10.1259/0007-1285-29-339-176-c] [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: 11/05/2022] Open
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50
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Vance J. VII. Primary Fibromyomata of the Broad Ligaments. Ann Surg 1907; 46:854-69. [PMID: 17862081 PMCID: PMC1414464 DOI: 10.1097/00000658-190712000-00007] [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]
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