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Rogers BG, Chan PA, Sutten-Coats C, Zanowick-Marr A, Patel RR, Mena L, Goedel WC, Chu C, Silva E, Galipeau D, Arnold T, Gomillia C, Curoe K, Villalobos J, Underwood A, Sosnowy C, Nunn AS. Perspectives on long-acting formulations of pre-exposure prophylaxis (PrEP) among men who have sex with men who are non-adherent to daily oral PrEP in the United States. BMC Public Health 2023; 23:1643. [PMID: 37641018 PMCID: PMC10463714 DOI: 10.1186/s12889-023-16382-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Accepted: 07/25/2023] [Indexed: 08/31/2023] Open
Abstract
INTRODUCTION Pre-exposure prophylaxis (PrEP) persistence among men who have sex with men (MSM) in real world clinical settings for HIV prevention is suboptimal. New longer-acting formulations of PrEP are becoming available, including injectables, subdermal implants, and other oral medications. These longer-acting formulations have the potential to improve retention among those who have challenges remaining adherent to daily oral PrEP. METHODS We interviewed 49 MSM who had initiated but discontinued oral PrEP at three diverse clinics across the United States. We examined participants' perspectives about long-acting PrEP formulations and how long-acting options could affect PrEP use using thematic analysis. RESULTS Participants were not very knowledgeable about long-acting formulations of PrEP but were open to learning about them and considering use. Participants were concerned about safety and efficacy of products given that they were still newer and/or in development. Finally, participants had clear preferences for oral pills, injectables, and then subdermal implants and were most interested in options that reduced the number of visits to the clinic. CONCLUSION Long-acting formulations of PrEP are acceptable to MSM with suboptimal PrEP persistence and have the potential to improve PrEP persistence. However, many felt they needed more information on safety, efficacy, and use to consider these options. As these long-acting formulations are implemented, public health campaigns and clinical interventions to encourage may maximize uptake particularly among those who are not currently adherent to daily oral PrEP.
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Affiliation(s)
- Brooke G Rogers
- Department of Medicine, Division of Infectious Diseases,, Warren Alpert Medical School of Brown University, Providence, 02903, USA.
- Department of Psychiatry and Human Behavior, Warren Alpert Medical School of Brown University, Providence, 02903, USA.
| | - P A Chan
- Department of Medicine, Division of Infectious Diseases,, Warren Alpert Medical School of Brown University, Providence, 02903, USA
- Department of Social and Behavioral Sciences, Brown University School of Public Health, Rhode Island, Providence, 02903, USA
| | - C Sutten-Coats
- Department of Social and Behavioral Sciences, Brown University School of Public Health, Rhode Island, Providence, 02903, USA
| | - A Zanowick-Marr
- Department of Medicine, Division of Infectious Diseases,, Warren Alpert Medical School of Brown University, Providence, 02903, USA
| | - R R Patel
- Department of Infectious Diseases, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - L Mena
- Department of Population Health Science, University of Mississippi Medical Center, Jackson, MS, 39216, USA
- Department of Medicine, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson, MS, 39216, USA
| | - W C Goedel
- Department of Epidemiology, Brown University School of Public Health, Rhode Island, Providence, 02903, USA
| | - C Chu
- Department of Medicine, Division of Infectious Diseases,, Warren Alpert Medical School of Brown University, Providence, 02903, USA
| | - E Silva
- Department of Medicine, Division of Infectious Diseases,, Warren Alpert Medical School of Brown University, Providence, 02903, USA
| | - D Galipeau
- Department of Medicine, Division of Infectious Diseases,, Warren Alpert Medical School of Brown University, Providence, 02903, USA
| | - T Arnold
- Department of Psychiatry and Human Behavior, Warren Alpert Medical School of Brown University, Providence, 02903, USA
| | - C Gomillia
- Department of Medicine, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson, MS, 39216, USA
| | - K Curoe
- Department of Infectious Diseases, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - J Villalobos
- Department of Infectious Diseases, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - A Underwood
- Department of Infectious Diseases, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - C Sosnowy
- Department of Medicine, Division of Infectious Diseases,, Warren Alpert Medical School of Brown University, Providence, 02903, USA
| | - Amy S Nunn
- Department of Medicine, Division of Infectious Diseases,, Warren Alpert Medical School of Brown University, Providence, 02903, USA.
- Department of Social and Behavioral Sciences, Brown University School of Public Health, Rhode Island, Providence, 02903, USA.
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Rogers BG, Sosnowy C, Zanowick-Marr A, Chan PA, Mena LA, Patel RR, Goedel WC, Arnold T, Chu C, Galipeau D, Montgomery MC, Curoe K, Underwood A, Villalobos J, Gomillia C, Nunn AS. Facilitators for retaining men who have sex with men in pre-exposure prophylaxis care in real world clinic settings within the United States. BMC Infect Dis 2022; 22:673. [PMID: 35931953 PMCID: PMC9354303 DOI: 10.1186/s12879-022-07658-y] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Accepted: 07/29/2022] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Pre-exposure prophylaxis (PrEP) can significantly reduce HIV acquisition especially among communities with high HIV prevalence, including men who have sex with men (MSM). Much research has been finding suboptimal PrEP persistence; however, few studies examine factors that enhance PrEP persistence in real-world settings. METHODS We interviewed 33 patients who identified as MSM at three different PrEP clinics in three regions of the U.S. (Northeast, South, Midwest). Participants were eligible if they took PrEP and had been retained in care for a minimum of 6 months. Interviews explored social, structural, clinic-level and behavioral factors that influencing PrEP persistence. RESULTS Through thematic analysis we identified the following factors as promoting PrEP persistence: (1) navigation to reduce out-of-pocket costs of PrEP (structural), (2) social norms that support PrEP use (social), (3) access to LGBTQ + affirming medical providers (clinical), (4) medication as part of a daily routine (behavioral), and (5) facilitation of sexual health agency (belief). DISCUSSION In this sample, persistence in PrEP care was associated with structural and social supports as well as a high level of perceived internal control over protecting their health by taking PrEP. Patients might benefit from increased access, LGBTQ + affirming medical providers, and communications that emphasize PrEP can promote sexual health.
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Affiliation(s)
- Brooke G. Rogers
- grid.40263.330000 0004 1936 9094Department of Medicine, Division of Infectious Diseases, Warren Alpert Medical School, Brown University, Providence, RI 02903 USA ,grid.40263.330000 0004 1936 9094Department of Psychiatry and Human Behavior, Warren Alpert Medical School of Brown University, Providence, RI 02903 USA
| | - C. Sosnowy
- grid.40263.330000 0004 1936 9094Department of Medicine, Division of Infectious Diseases, Warren Alpert Medical School, Brown University, Providence, RI 02903 USA
| | - A. Zanowick-Marr
- grid.40263.330000 0004 1936 9094Department of Medicine, Division of Infectious Diseases, Warren Alpert Medical School, Brown University, Providence, RI 02903 USA
| | - P. A. Chan
- grid.40263.330000 0004 1936 9094Department of Medicine, Division of Infectious Diseases, Warren Alpert Medical School, Brown University, Providence, RI 02903 USA ,grid.40263.330000 0004 1936 9094Department of Social and Behavioral Sciences, Brown University School of Public Health, Providence, RI 02903 USA
| | - L. A. Mena
- grid.410721.10000 0004 1937 0407Department of Population Health Science, University of Mississippi Medical Center, Jackson, MS 39216 USA ,grid.410721.10000 0004 1937 0407Department of Medicine, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson, MS 39216 USA
| | - R. R. Patel
- grid.4367.60000 0001 2355 7002Department of Infectious Diseases, Washington University School of Medicine, St. Louis, MO 63110 USA
| | - W. C. Goedel
- grid.40263.330000 0004 1936 9094Department of Epidemiology, Brown University School of Public Health, Providence, RI 02903 USA
| | - T. Arnold
- grid.40263.330000 0004 1936 9094Department of Psychiatry and Human Behavior, Warren Alpert Medical School of Brown University, Providence, RI 02903 USA
| | - C. Chu
- grid.40263.330000 0004 1936 9094Department of Medicine, Division of Infectious Diseases, Warren Alpert Medical School, Brown University, Providence, RI 02903 USA
| | - D. Galipeau
- grid.40263.330000 0004 1936 9094Department of Medicine, Division of Infectious Diseases, Warren Alpert Medical School, Brown University, Providence, RI 02903 USA
| | - M. C. Montgomery
- grid.40263.330000 0004 1936 9094Department of Medicine, Division of Infectious Diseases, Warren Alpert Medical School, Brown University, Providence, RI 02903 USA
| | - K. Curoe
- grid.4367.60000 0001 2355 7002Department of Infectious Diseases, Washington University School of Medicine, St. Louis, MO 63110 USA
| | - A. Underwood
- grid.4367.60000 0001 2355 7002Department of Infectious Diseases, Washington University School of Medicine, St. Louis, MO 63110 USA
| | - J. Villalobos
- grid.4367.60000 0001 2355 7002Department of Infectious Diseases, Washington University School of Medicine, St. Louis, MO 63110 USA
| | - C. Gomillia
- grid.410721.10000 0004 1937 0407Department of Population Health Science, University of Mississippi Medical Center, Jackson, MS 39216 USA
| | - A. S. Nunn
- grid.40263.330000 0004 1936 9094Department of Social and Behavioral Sciences, Brown University School of Public Health, Providence, RI 02903 USA
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Mattson J, Emerson J, Kulkarni A, Underwood A, Sun G, Mott S, Robison K, Hill E. Evaluation of superficial versus deep inguinal lymph node dissection in squamous cell carcinoma of the vulva. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.04.507] [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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4
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Toumoua S, Underwood A, Mataka D, Cherepanoff S. 27. An eyelid dilemma. Pathology 2019. [DOI: 10.1016/j.pathol.2018.09.026] [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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Buckman JEJ, Underwood A, Clarke K, Saunders R, Hollon SD, Fearon P, Pilling S. Risk factors for relapse and recurrence of depression in adults and how they operate: A four-phase systematic review and meta-synthesis. Clin Psychol Rev 2018; 64:13-38. [PMID: 30075313 PMCID: PMC6237833 DOI: 10.1016/j.cpr.2018.07.005] [Citation(s) in RCA: 188] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 02/16/2018] [Accepted: 07/21/2018] [Indexed: 12/23/2022]
Abstract
PURPOSE To review and synthesise prognostic indices that predict subsequent risk, prescriptive indices that moderate treatment response, and mechanisms that underlie each with respect to relapse and recurrence of depression in adults. RESULTS AND CONCLUSIONS Childhood maltreatment, post-treatment residual symptoms, and a history of recurrence emerged as strong prognostic indicators of risk and each could be used prescriptively to indicate who benefits most from continued or prophylactic treatment. Targeting prognostic indices or their "down-stream" consequences will be particularly beneficial because each is either a cause or a consequence of the causal mechanisms underlying risk of recurrence. The cognitive and neural mechanisms that underlie the prognostic indices are likely addressed by the effects of treatments that are moderated by the prescriptive factors. For example, psychosocial interventions that target the consequences of childhood maltreatment, extending pharmacotherapy or adapting psychological therapies to deal with residual symptoms, or using cognitive or mindfulness-based therapies for those with prior histories of recurrence. Future research that focuses on understanding causal pathways that link childhood maltreatment, or cognitive diatheses, to dysfunction in the neocortical and limbic pathways that process affective information and facilitate cognitive control, might result in more enduring effects of treatments for depression.
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Affiliation(s)
- J E J Buckman
- Research Department of Clinical, Educational and Health Psychology, University College London, London, UK.
| | - A Underwood
- Research Department of Clinical, Educational and Health Psychology, University College London, London, UK
| | - K Clarke
- Research Department of Clinical, Educational and Health Psychology, University College London, London, UK
| | - R Saunders
- Research Department of Clinical, Educational and Health Psychology, University College London, London, UK
| | - S D Hollon
- Department of Psychology, Vanderbilt University, Nashville, TN, USA
| | - P Fearon
- Research Department of Clinical, Educational and Health Psychology, University College London, London, UK
| | - S Pilling
- Research Department of Clinical, Educational and Health Psychology, University College London, London, UK
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Mentasti M, Cassier P, David S, Ginevra C, Gomez-Valero L, Underwood A, Afshar B, Etienne J, Parkhill J, Chalker V, Buchrieser C, Harrison T, Jarraud S. Rapid detection and evolutionary analysis of Legionella pneumophila serogroup 1 sequence type 47. Clin Microbiol Infect 2017; 23:264.e1-264.e9. [DOI: 10.1016/j.cmi.2016.11.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 11/23/2016] [Accepted: 11/24/2016] [Indexed: 10/20/2022]
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Petrovska L, Mather AE, AbuOun M, Branchu P, Harris SR, Connor T, Hopkins KL, Underwood A, Lettini AA, Page A, Bagnall M, Wain J, Parkhill J, Dougan G, Davies R, Kingsley RA. Microevolution of Monophasic Salmonella Typhimurium during Epidemic, United Kingdom, 2005-2010. Emerg Infect Dis 2016; 22:617-24. [PMID: 26982594 PMCID: PMC4806966 DOI: 10.3201/eid2204.150531] [Citation(s) in RCA: 120] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Microevolution resulted in considerable genotypic variation. Microevolution associated with emergence and expansion of new epidemic clones of
bacterial pathogens holds the key to epidemiologic success. To determine
microevolution associated with monophasic Salmonella Typhimurium
during an epidemic, we performed comparative whole-genome sequencing and phylogenomic
analysis of isolates from the United Kingdom and Italy during 2005–2012. These
isolates formed a single clade distinct from recent monophasic epidemic clones
previously described from North America and Spain. The UK monophasic epidemic clones
showed a novel genomic island encoding resistance to heavy metals and a composite
transposon encoding antimicrobial drug resistance genes not present in other
Salmonella Typhimurium isolates, which may have contributed to
epidemiologic success. A remarkable amount of genotypic variation accumulated during
clonal expansion that occurred during the epidemic, including multiple independent
acquisitions of a novel prophage carrying the sopE gene and multiple
deletion events affecting the phase II flagellin locus. This high level of
microevolution may affect antigenicity, pathogenicity, and transmission.
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8
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Ali A, Underwood A, Lee YR, Wilson D. Self-drainage of viscous liquids in vertical and inclined pipes. Food and Bioproducts Processing 2016. [DOI: 10.1016/j.fbp.2016.03.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Moran-Gilad J, Prior K, Yakunin E, Harrison TG, Underwood A, Lazarovitch T, Valinsky L, Lück C, Krux F, Agmon V, Grotto I, Harmsen D. Design and application of a core genome multilocus sequence typing scheme for investigation of Legionnaires' disease incidents. Euro Surveill 2015. [DOI: 10.2807/1560-7917.es2015.20.28.21186] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Binary file ES_Abstracts_Final_ECDC.txt matches
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Affiliation(s)
- J Moran-Gilad
- Public Health Services, Ministry of Health, Jerusalem, Israel
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- Surveillance and Pathogenomics Israeli Centre of Excellence, National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - K Prior
- Department of Periodontology, University of Münster, Münster, Germany
| | - E Yakunin
- Central Laboratories, Public Health Services, Ministry of Health, Jerusalem, Israel
| | - T G Harrison
- Reference Microbiology Services, Public Health England, London, United Kingdom
| | - A Underwood
- Reference Microbiology Services, Public Health England, London, United Kingdom
| | - T Lazarovitch
- Department of Clinical Microbiology, Assaf Harofeh Medical Centre, Zerifin, Israel
| | - L Valinsky
- Central Laboratories, Public Health Services, Ministry of Health, Jerusalem, Israel
| | - C Lück
- Institute of Medical Microbiology and Hygiene, University of Technology, Dresden, Germany
| | - F Krux
- Department of Periodontology, University of Münster, Münster, Germany
| | - V Agmon
- Central Laboratories, Public Health Services, Ministry of Health, Jerusalem, Israel
| | - I Grotto
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- Public Health Services, Ministry of Health, Jerusalem, Israel
| | - D Harmsen
- Department of Periodontology, University of Münster, Münster, Germany
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Mentasti M, Underwood A, Lück C, Kozak-Muiznieks NA, Harrison TG, Fry NK. Extension of the Legionella pneumophila sequence-based typing scheme to include strains carrying a variant of the N-acylneuraminate cytidylyltransferase gene. Clin Microbiol Infect 2013; 20:O435-41. [PMID: 24245827 DOI: 10.1111/1469-0691.12459] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Revised: 11/12/2013] [Accepted: 11/12/2013] [Indexed: 11/27/2022]
Abstract
Sequence-based typing (SBT) combined with monoclonal antibody subgrouping of Legionella pneumophila isolates is at present considered to be the reference standard during epidemiological investigation of Legionnaires' disease outbreaks. In some isolates of L. pneumophila, the seventh allele of the standard SBT scheme, neuA, is not amplified, because a homologue that is refractory to amplification with the standard neuA primers is present. Consequently, a complete seven-allele profile, and hence a sequence type, cannot be obtained. Subsequently, primers were designed to amplify both neuA and the homologue, but these yielded suboptimal sequencing results. In this study, novel primers specific for the neuA homologue were designed and internationally validated by members of the ESCMID Study Group for Legionella Infections at national and regional Legionella reference laboratories with a modified version of the online L. pneumophila sequence quality tool. To date, the addition of the neuAh target to the SBT protocol has allowed full typing data to be obtained for 108 isolates of 11 different serogroups, namely 1, 2, 3, 4, 5, 6, 7, 8, 10, 13, and 14, which could not previously be typed with the standard SBT neuA primers. Further studies are necessary to determine why it is still not possible to obtain either a neuA or a neuAh allele from three serogroup 11 isolates.
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Affiliation(s)
- M Mentasti
- Respiratory and Vaccine Preventable Bacteria Reference Unit, London, UK
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11
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Al-Shahib A, Afshar B, Underwood A, Turner C, Sriskandan S, Holden M, Parkhill J, Efstratiou A. P194 Molecular anatomy of invasive group A streptococcal (iGAS) isolates in England. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70436-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Underwood A, Al-Shahib A, Efstratiou A. P201 Analysing the accessory genome to discover loci responsible for increased morbidity caused by a novel GAS lineage in the UK. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70442-4] [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: 11/24/2022]
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13
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Karisik E, Underwood A, Ellington M, Livermore D, Woodford N. P864 Complete nucleotide sequence of pEK499, a multidrug-resistance plasmid from the UK's most prevalent Escherichia coli strain with CTX-M-15 β-lactamase. Int J Antimicrob Agents 2007. [DOI: 10.1016/s0924-8579(07)70705-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Fry NK, Afshar B, Visca P, Jonas D, Duncan J, Nebuloso E, Underwood A, Harrison TG. Assessment of fluorescent amplified fragment length polymorphism analysis for epidemiological genotyping of Legionella pneumophila serogroup 1. Clin Microbiol Infect 2005; 11:704-12. [PMID: 16104984 DOI: 10.1111/j.1469-0691.2005.01224.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [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: 11/30/2022]
Abstract
This study assessed the reproducibility and epidemiological concordance of double-enzyme fluorescent amplified fragment length polymorphism (fAFLP) analysis for genotyping of Legionella pneumophila serogroup (sg) 1. fAFLP fragment analysis was performed on three different sequencing platforms (one gel- and two capillary-based) in different laboratories with a well-characterised set of 50 strains of L. pneumophila sg 1. fAFLP data were analysed with the Pearson correlation similarity coefficient, using a range of parameters, and dendrogram outputs were converted to arbitrary types after selection of a specified percentage similarity threshold. The results obtained were compared with those obtained by the standard non-fluorescent AFLP method and were found to be broadly concordant. Using optimised settings for each fAFLP method to analyse the panel of 50 strains, epidemiological concordance (E) and reproducibility (R) values of 1.00 were obtained, and the number of types ranged from nine to 15, compared with E=1.00 and R=1.00, with 16 types, for the non-fluorescent AFLP protocol. The study demonstrated the potential of fAFLP for typing strains of L. pneumophila sg 1 on all three platforms; however, inter-platform comparison of fAFLP data was not achieved. fAFLP analysis may have a role in the fingerprinting of multiple isolates during Legionella outbreak investigations, but further work is required before type designations and identification libraries can be developed.
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Affiliation(s)
- N K Fry
- Health Protection Agency, Respiratory & Systemic Infection Laboratory, Centre for Infections, London, UK.
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15
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Arnold C, Westland L, Mowat G, Underwood A, Magee J, Gharbia S. Single-nucleotide polymorphism-based differentiation and drug resistance detection in Mycobacterium tuberculosis from isolates or directly from sputum. Clin Microbiol Infect 2005; 11:122-30. [PMID: 15679486 DOI: 10.1111/j.1469-0691.2004.01034.x] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The rapid technique of pyrosequencing was used to examine 123 samples (in the form of DNA extracts and inactivated sputum) of Mycobacterium spp. Of 99 Mycobacterium tuberculosis samples investigated for single-nucleotide polymorphisms (SNPs), 68% of isoniazid-resistant isolates analysed had an AGC --> ACC mutation in katG at codon 315, resulting in the Ser --> Thr substitution associated previously with isoniazid resistance. Of the rifampicin-resistant isolates, 92% showed SNPs in rpoB at codons 516, 531 or 526. Inactivated sputum samples and DNA extracts could both be analysed by pyrosequencing, and the method was able to differentiate rapidly between the closely related species of the M. tuberculosis complex (M. tuberculosis, Mycobacterium bovis, Mycobacterium africanum, Mycobacterium canetti and Mycobacterium microti), except between M. tuberculosis, M. canetti and one of two M. africanum strains. This low-cost, high-throughput technique could be used as a rapid screen for drug resistance and as a replacement for some of the time-consuming tests used currently for species identification.
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Affiliation(s)
- C Arnold
- Genomics, Proteomics and Bioinformatics Unit, Centre for Infections, Health Protection Agency, London, UK.
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Olabarria C, Underwood A, Chapman M. Appropriate experimental design to evaluate preferences for microhabitat: an example of preferences by species of microgastropods. Oecologia 2002; 132:159-166. [PMID: 28547347 DOI: 10.1007/s00442-002-0940-6] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2001] [Accepted: 04/06/2002] [Indexed: 10/27/2022]
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17
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Underwood A, Watson R. III. Mind, moods and stress. Thanks for the memories. Newsweek 2001; 138:54-8. [PMID: 11586852] [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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18
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Underwood A. II. Fitness, nutrition, beauty. More veggies, please. Newsweek 2001; 138:42-6. [PMID: 11586849] [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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19
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Underwood A, Service MW. Book Reviews. Annals of Tropical Medicine & Parasitology 2001. [DOI: 10.1080/00034983.2001.11813692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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20
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Underwood A. Surgery. A million amazing beats. An experimental bionic heart saves a life--for now. Newsweek 2001; 138:51. [PMID: 11471438] [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: 02/20/2023]
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21
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Cowley G, Underwood A. New heart, new hope. Newsweek 2001; 137:42-4, 47-9. [PMID: 11436372] [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: 02/20/2023]
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Underwood A. Nourishing your brain. Newsweek 2001; 137:60-1. [PMID: 11338629] [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: 02/20/2023]
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23
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Cowley G, Underwood A. Soda pop that packs a punch. Are the new alcoholic lemonades aimed at kids? Newsweek 2001; 137:45. [PMID: 11225090] [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: 02/19/2023]
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24
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Lay AJ, Jiang XM, Kisker O, Flynn E, Underwood A, Condron R, Hogg PJ. Phosphoglycerate kinase acts in tumour angiogenesis as a disulphide reductase. Nature 2000; 408:869-73. [PMID: 11130727 DOI: 10.1038/35048596] [Citation(s) in RCA: 216] [Impact Index Per Article: 9.0] [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: 12/12/2022]
Abstract
Disulphide bonds in secreted proteins are considered to be inert because of the oxidizing nature of the extracellular milieu. An exception to this rule is a reductase secreted by tumour cells that reduces disulphide bonds in the serine proteinase plasmin. Reduction of plasmin initiates proteolytic cleavage in the kringle 5 domain and release of the tumour blood vessel inhibitor angiostatin. New blood vessel formation or angiogenesis is critical for tumour expansion and metastasis. Here we show that the plasmin reductase isolated from conditioned medium of fibrosarcoma cells is the glycolytic enzyme phosphoglycerate kinase. Recombinant phosphoglycerate kinase had the same specific activity as the fibrosarcoma-derived protein. Plasma of mice bearing fibrosarcoma tumours contained several-fold more phosphoglycerate kinase, as compared with mice without tumours. Administration of phosphoglycerate kinase to tumour-bearing mice caused an increase in plasma levels of angiostatin, and a decrease in tumour vascularity and rate of tumour growth. Our findings indicate that phosphoglycerate kinase not only functions in glycolysis but is secreted by tumour cells and participates in the angiogenic process as a disulphide reductase.
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Affiliation(s)
- A J Lay
- Centre for Thrombosis and Vascular Research, School of Pathology, University of New South Wales and Department of Haematology, Prince of Wales Hospital, Sydney, Australia
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25
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Gamble JR, Drew J, Trezise L, Underwood A, Parsons M, Kasminkas L, Rudge J, Yancopoulos G, Vadas MA. Angiopoietin-1 is an antipermeability and anti-inflammatory agent in vitro and targets cell junctions. Circ Res 2000; 87:603-7. [PMID: 11009566 DOI: 10.1161/01.res.87.7.603] [Citation(s) in RCA: 358] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Inflammation is a basic pathological mechanism that underlies many diseases. An important component of the inflammatory response is the passage of plasma components and leukocytes from the blood vessel into the tissues. The endothelial monolayer lining blood vessels reacts to stimuli such as thrombin or vascular endothelial growth factor by changes in cell-cell junctions, an increase in permeability, and the leakage of plasma components into tissues. Other stimuli, such as tumor necrosis factor-alpha (TNF-alpha), are responsible for stimulating the transmigration of leukocytes. Here we show that angiopoietin-1, a cytokine essential in fetal angiogenesis, not only supports the localization of proteins such as platelet endothelial cell adhesion molecule-1 (PECAM-1) into junctions between endothelial cells and decreases the phosphorylation of PECAM-1 and vascular endothelial cadherin, but it also strengthens these junctions, as evidenced by a decrease in basal permeability and inhibition of permeability responses to thrombin and vascular endothelial growth factor. Furthermore, angiopoietin-1 inhibits TNF-alpha-stimulated leukocyte transmigration. Angiopoietin-1 may thus have a major role in maintaining the integrity of endothelial monolayers.
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Affiliation(s)
- J R Gamble
- Vascular Biology Laboratory, Division of Immunology, Hanson Centre for Cancer Research, Institute of Medical and Veterinary Science and the University of Adelaide, South Australia.
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26
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Cowley G, Underwood A. A revolution in medicine. Newsweek 2000; 135:58-62. [PMID: 10847894] [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: 02/16/2023]
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27
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Underwood A. Drugstore dangers. Medication mix-ups are increasing as the number of prescriptions grows each year. Here are the hazards, and the steps you can take to protect yourself. Newsweek 2000; 135:81-2. [PMID: 10788150] [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: 02/16/2023]
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28
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Underwood A. The battle of pork rind hill. Newsweek 2000; 135:50-2. [PMID: 10847891] [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: 02/16/2023]
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29
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Cowley G, Underwood A. Alzheimer's. Unlocking the mystery. The longer we live, the more likely we are to contract this devastating disease. But recent discoveries are bringing scientists closer than ever to a cure. Newsweek 2000; 135:46-51. [PMID: 10848183] [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: 04/14/2023]
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30
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Cowley G, Underwood A, Brownell G. A pig may someday save your life. Biotech: scientists are racing to turn oinkers into organ donors. The effort could bring huge benefits, but it carries huge risks. Newsweek 2000; 134:87-9. [PMID: 10848180] [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: 02/16/2023]
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31
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Underwood A. A prescriptive palette. Researchers say the pigments that give foods their color also can cut cancer and heart-disease risk, and ease the pain of arthritis. Newsweek 1999; 134:91-2. [PMID: 10724549] [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: 02/15/2023]
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32
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Kantrowitz B, Underwood A. Dyslexia and the new science of reading. Newsweek 1999; 134:72-8. [PMID: 10724545] [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: 02/15/2023]
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33
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Underwood A. The perils of pasta. Newsweek 1999; 134:89-90. [PMID: 10622863] [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: 02/15/2023]
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34
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Underwood A. The winged menace. Newsweek 1999; 134:37. [PMID: 10620969] [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: 04/14/2023]
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35
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Cowley G, Underwood A. Finding the right Rx. Portable databases can make doctors more efficient. But this one helps them practice better medicine. Newsweek 1999; 134:66-7. [PMID: 10620970] [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: 02/15/2023]
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36
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Underwood A. To build a cancer cell. Newsweek 1999; 134:67. [PMID: 10620976] [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: 02/15/2023]
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38
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Cowley G, Underwood A. What is SAMe? S-Adenosylmethionine. Newsweek 1999; 134:46-50. [PMID: 10538206] [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: 02/14/2023]
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39
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Underwood A. Chemo in question. Higher doses may not help breast cancer--yet. Newsweek 1999; 133:64. [PMID: 10351750] [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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40
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Underwood A. Do scopes spread sickness? Newsweek 1999; 133:72-3. [PMID: 10345925] [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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41
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Cowley G, Underwood A. Memory. Newsweek 1998; 131:48-54. [PMID: 10180630] [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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42
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Cowley G, Underwood A. Surgeon, drop that scalpel. Newsweek 1997; 130:77-8. [PMID: 10175728] [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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James J, Underwood A. Poverty: initiatives to protect children from its effects. Practitioner 1997; 241:222-4. [PMID: 9206295] [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: 02/04/2023]
Affiliation(s)
- J James
- Montpelier Health Centre, Bristol
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Cowley G, Underwood A. A gentler approach to heart surgery. Newsweek 1997; 129:73. [PMID: 10172926] [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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Affiliation(s)
- J James
- Montpelier Health Centre, Bristol
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Sack RA, Underwood A, Tan KO, Morris C. Vitronectin in human tears--protection against closed eye induced inflammatory damage. Adv Exp Med Biol 1994; 350:345-9. [PMID: 7518183 DOI: 10.1007/978-1-4615-2417-5_59] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Abstract
Decreased wound healing and increased infection are major problems in patients with diabetes mellitus. Fibronectin plays a fundamental role in wound healing and acts as an opsonin for the phagocytosis of foreign antigens. The aim of this study was to ascertain the functional activity of plasma fibronectin from patients with diabetes mellitus. Initially, a modified Boyden chamber technique was used to measure cell migration on fibronectin purified from patient's plasma and an enzyme-linked immunosorbent assay was used to measure the binding of gelatin. A sandwich assay was developed that enabled the capture of fibronectin directly from patient's plasma without prior purification. With the use of a 96-well format, the binding of two different monoclonal antibodies could be compared simultaneously with the binding of gelatin and cell adhesion. In this way, differences in the function of particular domains of fibronectin from diabetic patients and control subjects could be measured. Results showed no difference between fibronectin from diabetic patients and control subjects with respect to the monoclonal antibodies binding in 1) the cell adhesion domain and 2) the heparin-binding domain. Furthermore, no detectable differences were noted with respect to cell adhesion, cell migration, or gelatin binding. These results suggest that diabetic patients receiving insulin treatment show no modulation of plasma fibronectin function, despite raised levels of circulating glucose.
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Affiliation(s)
- N Di Girolamo
- Laboratory of Ocular Immunology, School of Pathology, University of New South Wales, Australia
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Gelman D, Doherty S, Hager M, Underwood A, Gosnell M. Staying home, feeling better. Newsweek 1986; 108:48-9. [PMID: 10300855] [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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49
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Underwood A. On the Functions of the Nerves of Taste. Dent Regist 1883; 37:261-268. [PMID: 33698563 PMCID: PMC6919792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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