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Ingle H, Makimaa H, Aggarwal S, Deng H, Foster L, Li Y, Kennedy EA, Peterson ST, Wilen CB, Lee S, Suthar MS, Baldridge MT. IFN-λ derived from nonsusceptible enterocytes acts on tuft cells to limit persistent norovirus. Sci Adv 2023; 9:eadi2562. [PMID: 37703370 PMCID: PMC10499323 DOI: 10.1126/sciadv.adi2562] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 08/10/2023] [Indexed: 09/15/2023]
Abstract
Norovirus is a leading cause of epidemic viral gastroenteritis, with no currently approved vaccines or antivirals. Murine norovirus (MNoV) is a well-characterized model of norovirus pathogenesis in vivo, and persistent strains exhibit lifelong intestinal infection. Interferon-λ (IFN-λ) is a potent antiviral that rapidly cures MNoV. We previously demonstrated that IFN-λ signaling in intestinal epithelial cells (IECs) controls persistent MNoV, and here demonstrate that IFN-λ acts on tuft cells, the exclusive site of MNoV persistence, to limit infection. While interrogating the source of IFN-λ to regulate MNoV, we confirmed that MDA5-MAVS signaling, required for IFN-λ induction to MNoV in vitro, controls persistent MNoV in vivo. We demonstrate that MAVS in IECs and not immune cells controls MNoV. MAVS in nonsusceptible enterocytes, but not in tuft cells, restricts MNoV, implicating noninfected cells as the IFN-λ source. Our findings indicate that host sensing of MNoV is distinct from cellular tropism, suggesting intercellular communication between IECs for antiviral signaling induction in uninfected bystander cells.
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Affiliation(s)
- Harshad Ingle
- Division of Infectious Diseases, Department of Medicine, Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine, St. Louis, MO, USA
| | - Heyde Makimaa
- Division of Infectious Diseases, Department of Medicine, Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine, St. Louis, MO, USA
| | - Somya Aggarwal
- Division of Infectious Diseases, Department of Medicine, Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine, St. Louis, MO, USA
| | - Hongju Deng
- Division of Infectious Diseases, Department of Medicine, Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine, St. Louis, MO, USA
| | - Lynne Foster
- Division of Infectious Diseases, Department of Medicine, Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine, St. Louis, MO, USA
| | - Yuhao Li
- Division of Infectious Diseases, Department of Medicine, Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine, St. Louis, MO, USA
| | - Elizabeth A. Kennedy
- Division of Infectious Diseases, Department of Medicine, Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine, St. Louis, MO, USA
| | - Stefan T. Peterson
- Division of Infectious Diseases, Department of Medicine, Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine, St. Louis, MO, USA
| | - Craig B. Wilen
- Departments of Laboratory Medicine and Immunobiology, Yale School of Medicine, New Haven, CT, USA
| | - Sanghyun Lee
- Division of Biology and Medicine, Department of Molecular Microbiology and Immunology, Brown University, Providence, RI, USA
| | - Mehul S. Suthar
- Department of Pediatrics, Emory School of Medicine, Atlanta, GA, USA
| | - Megan T. Baldridge
- Division of Infectious Diseases, Department of Medicine, Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine, St. Louis, MO, USA
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO, USA
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Li Y, Molleston JM, Kim AH, Ingle H, Aggarwal S, Nolan LS, Hassan AO, Foster L, Diamond MS, Baldridge MT. Sequential early-life viral infections modulate the microbiota and adaptive immune responses to systemic and mucosal vaccination. bioRxiv 2023:2023.08.31.555772. [PMID: 37693434 PMCID: PMC10491206 DOI: 10.1101/2023.08.31.555772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
Increasing evidence points to the microbial exposome as a critical factor in maturing and shaping the host immune system, thereby influencing responses to immune challenges such as infections or vaccines. To investigate the effect of early-life viral exposures on immune development and vaccine responses, we inoculated mice with six distinct viral pathogens in sequence beginning in the neonatal period, and then evaluated their immune signatures before and after intramuscular or intranasal vaccination against SARS-CoV-2. Sequential viral infection drove profound changes in all aspects of the immune system, including increasing circulating leukocytes, altering innate and adaptive immune cell lineages in tissues, and markedly influencing serum cytokine and total antibody levels. Beyond these immune responses changes, these exposures also modulated the composition of the endogenous intestinal microbiota. Although sequentially-infected mice exhibited increased systemic immune activation and T cell responses after intramuscular and intranasal SARS-CoV-2 immunization, we observed decreased vaccine-induced antibody responses in these animals. These results suggest that early-life viral exposures are sufficient to diminish antibody responses to vaccination in mice, and highlight their potential importance of considering prior microbial exposures when investigating vaccine responses.
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Sarkany RPE, Canfield M, Morgan M, Foster L, Johnstone K, Sainsbury K, Araujo-Soares V, Wulf HC, Weinman J, Walburn J, Norton S. Ultraviolet exposure to the face in patients with xeroderma pigmentosum and healthy controls: applying a novel methodology to define photoprotection behaviour. Br J Dermatol 2021; 186:713-720. [PMID: 34783007 PMCID: PMC9306996 DOI: 10.1111/bjd.20899] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/13/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND In Xeroderma Pigmentosum (XP), the main means of preventing skin and eye cancers is extreme protection against ultraviolet radiation (UVR). Protection is most important for the face. OBJECTIVES We aimed to assess how well patients with XP adhere to medical advice to protect against UVR by objectively estimating the mean daily dose of UVR to the face. METHODS We objectively estimated the UVR dose to the face in 36 XP patients and 25 healthy individuals over 3 weeks in the summer. We used a new methodology which combined UVR dose measurements from a wrist-worn dosimeter with an activity diary record of face photoprotection behaviour for each 15 minute period spent outside. A protection factor was associated with each behaviour, and the data analysed using a negative binomial mixed-effects model. RESULTS The mean daily UVR dose (weighted for DNA damage capacity) to the face in the XP patients was 0.13 Standard Erythemal Doses (SED) (mean in healthy individuals = 0.51 SED). There was wide variation between patients (range <0.01 - 0.48 SED/day). Self-caring adult patients had a very similar UV dose to the face to cared-for patients (0.13 vs 0.12 SED/day) despite photoprotecting much more poorly when outside, because the self-caring adults were outside in daylight much less. CONCLUSIONS Photoprotection behaviour varies widely within the XP group indicating that non-adherence to photoprotection advice is a significant issue. Timing and duration of going outside are as important as photoprotective measures taken when outside, to determine the UVR exposure to the face. This new methodology will be of value in identifying the sources of UVR exposure in other conditions where facial UV exposure is a key outcome, particularly in patients with multiple non-melanoma skin cancers.
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Affiliation(s)
- R P E Sarkany
- Xeroderma Pigmentosum Unit, Guys and St Thomas' NHS Foundation Trust, UK
| | - M Canfield
- Health Psychology Section, Institute of Psychiatry, King's College London, Psychology & Neuroscience, UK
| | - M Morgan
- School of Cancer and Pharmaceutical Sciences, King's College London, UK
| | - L Foster
- Xeroderma Pigmentosum Unit, Guys and St Thomas' NHS Foundation Trust, UK
| | - K Johnstone
- School of Cancer and Pharmaceutical Sciences, King's College London, UK
| | - K Sainsbury
- Population Health Institute, Faculty of Medical Sciences, Newcastle University, UK
| | - V Araujo-Soares
- Population Health Institute, Faculty of Medical Sciences, Newcastle University, UK.,Health Technology and Services Research, Technical Medical Centre, University of Twente, The Netherlands
| | - H C Wulf
- Department of Dermatology, Bispebjerg University Hospital, Copenhagen, Denmark
| | - J Weinman
- School of Cancer and Pharmaceutical Sciences, King's College London, UK
| | - J Walburn
- School of Cancer and Pharmaceutical Sciences, King's College London, UK
| | - S Norton
- Health Psychology Section, Institute of Psychiatry, King's College London, Psychology & Neuroscience, UK
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Lamarca A, Foster L, Satyadas T, Siriwardena A, Valle JW. Erratum to 'FOLFIRINOX or FOLFOXIRI in locally advanced duodenal adenocarcinoma: are we missing out?': [ESMO Open Volume 5, Issue 5, 2020, e000633]. ESMO Open 2021; 6:100138. [PMID: 34144782 DOI: 10.1016/j.esmoop.2021.100138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Affiliation(s)
- A Lamarca
- Department of Medical Oncology, The Christie NHS Foundation Trust/Division of Cancer Sciences, University of Manchester, Manchester, UK
| | - L Foster
- Department of Pathology, Manchester Royal Infirmary, Manchester, UK
| | - T Satyadas
- Department of HPB Surgery, Manchester Royal Infirmary, Manchester, UK
| | - A Siriwardena
- Department of HPB Surgery, Manchester Royal Infirmary, Manchester, UK
| | - J W Valle
- Division of Cancer Sciences, University of Manchester/Department of Medical Oncology, The Christie NHS Foundation Trust, Manchester, UK.
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Towell-Barnard A, Coventry L, Foster L, Davis S, Twigg DE, Bharat C, Boston J. The psychometric validation of the quality practical experience (QPE) instruments (nurses and student nurse) to evaluate clinical supervision of undergraduate student nurses. Nurse Educ Pract 2020; 43:102697. [PMID: 31981971 DOI: 10.1016/j.nepr.2020.102697] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 12/09/2019] [Accepted: 01/13/2020] [Indexed: 11/22/2022]
Abstract
It is important to evaluate stakeholder feedback regarding any change to a clinical supervision model to maintain quality. The Quality Practical Experience (QPE) instruments offer both the nurse on the ward involved with supervising student learning and the student nurse the opportunity to evaluate their satisfaction with the supervision model. This paper reports on the evaluation of the construct validity and the reliability of the QPE instruments measuring nurse and nursing student satisfaction with the clinical supervision model. Methodological design for the reliability and validation of a measuring instrument. The nurse and the student QPE instruments were tested with convenience samples of 488 nurses and 1116 student nurses, respectively. Psychometric tests included internal reliability, test-retest reliability and factor analyses. Exploratory factor analysis for both QPEs supported a three-factor solution; the nurse QPE explained 48% and student nurse QPE 45% of variance. Internal reliability and test-retest reliability were stable over time (nurse QPE ICC = 0.82; student nurse QPE ICC = 0.71). Both QPE instruments were found to be valid and reliable. Feedback from all stakeholders involved with supporting student nurses during clinical placement is important.
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Affiliation(s)
- Amanda Towell-Barnard
- School of Nursing & Midwifery, Edith Cowan University, 270 Joondalup Drive, Joondalup, Western Australia, 6027, Australia; Sir Charles Gairdner Hospital Centre for Nursing Research, Hospital Avenue, Nedlands, Western Australia, 6009, Australia.
| | - Linda Coventry
- School of Nursing & Midwifery, Edith Cowan University, 270 Joondalup Drive, Joondalup, Western Australia, 6027, Australia; Sir Charles Gairdner Hospital Centre for Nursing Research, Hospital Avenue, Nedlands, Western Australia, 6009, Australia.
| | - L Foster
- Sir Charles Gairdner Hospital Centre for Nursing Research, Hospital Avenue, Nedlands, Western Australia, 6009, Australia.
| | - Susan Davis
- Sir Charles Gairdner Hospital Centre for Nursing Research, Hospital Avenue, Nedlands, Western Australia, 6009, Australia.
| | - Dianne E Twigg
- School of Nursing & Midwifery, Edith Cowan University, 270 Joondalup Drive, Joondalup, Western Australia, 6027, Australia; Sir Charles Gairdner Hospital Centre for Nursing Research, Hospital Avenue, Nedlands, Western Australia, 6009, Australia.
| | - Chrianna Bharat
- Sir Charles Gairdner Hospital Centre for Nursing Research, Hospital Avenue, Nedlands, Western Australia, 6009, Australia; National Drug and Alcohol Research Centre (UNSW), Australia.
| | - J Boston
- School of Nursing & Midwifery, Edith Cowan University, 270 Joondalup Drive, Joondalup, Western Australia, 6027, Australia; Sir Charles Gairdner Hospital Centre for Nursing Research, Hospital Avenue, Nedlands, Western Australia, 6009, Australia.
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O’Brien VP, Gilbert NM, Lebratti T, Agarwal K, Foster L, Shin H, Lewis AL. Low-dose inoculation of Escherichia coli achieves robust vaginal colonization and results in ascending infection accompanied by severe uterine inflammation in mice. PLoS One 2019; 14:e0219941. [PMID: 31329630 PMCID: PMC6645506 DOI: 10.1371/journal.pone.0219941] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 07/03/2019] [Indexed: 11/19/2022] Open
Abstract
Escherichia coli infection of the female reproductive tract is a significant cause of disease in humans and animals, but simple animal models are lacking. Here we report that vaginal inoculation of uropathogenic E. coli strains UTI89 and CFT073 in non-pregnant, estrogen-treated mice resulted in robust colonization of the vagina and uterine horns, whereas titers of the lab strain MG1655 were significantly lower. Non-estrogenized mice also became colonized, but there was more variation in titers. A dose of 104 colony-forming units (CFU) UTI89 was sufficient to result in colonization in all estrogenized mice, and we also observed bacterial transfer between inoculated and uninoculated estrogenized cage mates. UTI89 infection led to inflammation and leukocyte infiltration into the uterine horns as evidenced by tissue histology. Flow cytometry experiments revealed that neutrophil, monocyte and eosinophil populations were significantly increased in infected uterine horns. This model is a simple way to study host-pathogen interactions in E. coli vaginal colonization and uterine infection. There are immediate implications for investigators studying urinary tract infection using mouse models, as few E. coli are required to achieve reproductive colonization, resulting in an additional, underappreciated mucosal reservoir.
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Affiliation(s)
- Valerie P. O’Brien
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO, United States of America
- Center for Women’s Infectious Disease Research, Washington University School of Medicine, St. Louis, MO, United States of America
| | - Nicole M. Gilbert
- Center for Women’s Infectious Disease Research, Washington University School of Medicine, St. Louis, MO, United States of America
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, MO, United States of America
- Center for Reproductive Health Sciences, Washington University School of Medicine, St. Louis, MO, United States of America
| | - Tania Lebratti
- Department of Medicine and Division of Infectious Diseases, Washington University School of Medicine, St. Louis, MO, United States of America
| | - Kavita Agarwal
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO, United States of America
- Center for Women’s Infectious Disease Research, Washington University School of Medicine, St. Louis, MO, United States of America
| | - Lynne Foster
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO, United States of America
- Center for Women’s Infectious Disease Research, Washington University School of Medicine, St. Louis, MO, United States of America
| | - Haina Shin
- Department of Medicine and Division of Infectious Diseases, Washington University School of Medicine, St. Louis, MO, United States of America
| | - Amanda L. Lewis
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO, United States of America
- Center for Women’s Infectious Disease Research, Washington University School of Medicine, St. Louis, MO, United States of America
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, MO, United States of America
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Dong K, Foster L, Tebbutt S, Ng R, Sin D, Quon B. P216 Untargeted plasma proteomics to identify novel blood biomarkers of treatment response in cystic fibrosis pulmonary exacerbations. J Cyst Fibros 2019. [DOI: 10.1016/s1569-1993(19)30509-0] [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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Foster L, Allchorne P, Fleure L, Clovis S, Gibbs E, Bennett J, Kinsella J, Carhill J, Green J. Are shared medical appointments an effective method of delivering discharge information to prepare prostate cancer patients for discharge from secondary care? Int J Surg 2018. [DOI: 10.1016/j.ijsu.2018.05.649] [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: 10/28/2022]
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9
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Palesch Y, Ramakrishnan V, Foster L, Martin R, Cassarly C, Barsan W, Moy C, Qureshi A. Antihypertensive treatment of acute cerebral hemorrhage phase iii (ATACH-II) trial: Secondary analysis of Asian and non-Asian subgroups using 24-hour blood pressure profile data. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1811] [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: 10/18/2022]
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Affiliation(s)
- L. Foster
- University of Sheffield, Sheffield, United Kingdom
| | - M. Heneghan
- University of Sheffield, Sheffield, United Kingdom
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11
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Tomsick TA, Carrozzella J, Foster L, Hill MD, von Kummer R, Goyal M, Demchuk AM, Khatri P, Palesch Y, Broderick JP, Yeatts SD, Liebeskind DS. Endovascular Therapy of M2 Occlusion in IMS III: Role of M2 Segment Definition and Location on Clinical and Revascularization Outcomes. AJNR Am J Neuroradiol 2016; 38:84-89. [PMID: 27765740 DOI: 10.3174/ajnr.a4979] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 08/01/2016] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Uncertainty persists regarding the safety and efficacy of endovascular therapy of M2 occlusions following IV tPA. We reviewed the impact of revascularization on clinical outcomes in 83 patients with M2 occlusions in the Interventional Management of Stroke III trial according to specific M1-M2 segment anatomic features. MATERIALS AND METHODS Perfusion of any M2 branch distinguished M2-versus-M1 occlusion. Prespecified modified TICI and arterial occlusive lesion revascularization and clinical mRS 0-2 end points at 90 days for endovascular therapy-treated M2 occlusions were analyzed. Post hoc analyses of the relationship of outcomes to multiple baseline angiographic M2 and M1 subgroup characteristics were performed. RESULTS Of 83 participants with M2 occlusion who underwent endovascular therapy, 41.0% achieved mRS 0-2 at 90 days, including 46.6% with modified TICI 2-3 reperfusion compared with 26.1% with modified TICI 0-1 reperfusion (risk difference, 20.6%; 95% CI, -1.4%-42.5%). mRS 0-2 outcome was associated with reperfusion for M2 trunk (n = 9) or M2 division (n = 42) occlusions, but not for M2 branch occlusions (n = 28). Of participants with trunk and division occlusions, 63.2% with modified TICI 2a and 42.9% with modified TICI 2b reperfusion achieved mRS 0-2 outcomes; mRS 0-2 outcomes for M2 trunk occlusions (33%) did not differ from distal (38.2%) and proximal (26.9%) M1 occlusions. CONCLUSIONS mRS 0-2 at 90 days was dependent on reperfusion for M2 trunk but not for M2 branch occlusions. For M2 division occlusions, good outcome with modified TICI 2b reperfusion did not differ from that in modified TICI 2a. M2 segment definition and occlusion location may contribute to differences in revascularization and good outcome between Interventional Management of Stroke III and other endovascular therapy studies.
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Affiliation(s)
- T A Tomsick
- From the Department of Radiology (T.A.T., J.C.), University of Cincinnati Academic Health Center, University Hospital, Cincinnati, Ohio
| | - J Carrozzella
- From the Department of Radiology (T.A.T., J.C.), University of Cincinnati Academic Health Center, University Hospital, Cincinnati, Ohio
| | - L Foster
- Department of Biostatistics, Bioinformatics, and Epidemiology (L.F., Y.P., S.D.Y.), Medical University of South Carolina, Charleston, South Carolina
| | - M D Hill
- Calgary Stroke Program (M.D.H., A.M.D.), Department of Clinical Neurosciences, Medicine, Community Health Sciences, Hotchkiss Brain Institute, University of Calgary, Foothills Hospital, Calgary, Alberta, Canada
| | - R von Kummer
- Department of Neuroradiology (R.v.K.), Dresden University Stroke Center, Universitätsklinikum Carl Gustav Carusan deTechnischen Universität Dresden, Dresden, Germany
| | - M Goyal
- Department of Radiology and Clinical Neurosciences (M.G.), University of Calgary, Calgary, Alberta, Canada
| | - A M Demchuk
- Calgary Stroke Program (M.D.H., A.M.D.), Department of Clinical Neurosciences, Medicine, Community Health Sciences, Hotchkiss Brain Institute, University of Calgary, Foothills Hospital, Calgary, Alberta, Canada
| | - P Khatri
- Department of Neurology (P.K., J.P.B.), University of Cincinnati Academic Health Center, Cincinnati, Ohio
| | - Y Palesch
- Department of Biostatistics, Bioinformatics, and Epidemiology (L.F., Y.P., S.D.Y.), Medical University of South Carolina, Charleston, South Carolina
| | - J P Broderick
- Department of Neurology (P.K., J.P.B.), University of Cincinnati Academic Health Center, Cincinnati, Ohio
| | - S D Yeatts
- Department of Biostatistics, Bioinformatics, and Epidemiology (L.F., Y.P., S.D.Y.), Medical University of South Carolina, Charleston, South Carolina
| | - D S Liebeskind
- University of California Los Angeles Stroke Center (D.S.L.), Los Angeles, California
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Schill EM, Lake JI, Tusheva OA, Nagy N, Bery SK, Foster L, Avetisyan M, Johnson SL, Stenson WF, Goldstein AM, Heuckeroth RO. Ibuprofen slows migration and inhibits bowel colonization by enteric nervous system precursors in zebrafish, chick and mouse. Dev Biol 2016; 409:473-88. [PMID: 26586201 PMCID: PMC4862364 DOI: 10.1016/j.ydbio.2015.09.023] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 08/31/2015] [Accepted: 09/07/2015] [Indexed: 12/17/2022]
Abstract
Hirschsprung Disease (HSCR) is a potentially deadly birth defect characterized by the absence of the enteric nervous system (ENS) in distal bowel. Although HSCR has clear genetic causes, no HSCR-associated mutation is 100% penetrant, suggesting gene-gene and gene-environment interactions determine HSCR occurrence. To test the hypothesis that certain medicines might alter HSCR risk we treated zebrafish with medications commonly used during early human pregnancy and discovered that ibuprofen caused HSCR-like absence of enteric neurons in distal bowel. Using fetal CF-1 mouse gut slice cultures, we found that ibuprofen treated enteric neural crest-derived cells (ENCDC) had reduced migration, fewer lamellipodia and lower levels of active RAC1/CDC42. Additionally, inhibiting ROCK, a RHOA effector and known RAC1 antagonist, reversed ibuprofen effects on migrating mouse ENCDC in culture. Ibuprofen also inhibited colonization of Ret+/- mouse bowel by ENCDC in vivo and dramatically reduced bowel colonization by chick ENCDC in culture. Interestingly, ibuprofen did not affect ENCDC migration until after at least three hours of exposure. Furthermore, mice deficient in Ptgs1 (COX 1) and Ptgs2 (COX 2) had normal bowel colonization by ENCDC and normal ENCDC migration in vitro suggesting COX-independent effects. Consistent with selective and strain specific effects on ENCDC, ibuprofen did not affect migration of gut mesenchymal cells, NIH3T3, or WT C57BL/6 ENCDC, and did not affect dorsal root ganglion cell precursor migration in zebrafish. Thus, ibuprofen inhibits ENCDC migration in vitro and bowel colonization by ENCDC in vivo in zebrafish, mouse and chick, but there are cell type and strain specific responses. These data raise concern that ibuprofen may increase Hirschsprung disease risk in some genetically susceptible children.
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Affiliation(s)
- Ellen Merrick Schill
- Department of Pediatrics, Washington University School of Medicine, 660 South Euclid Avenue, St. Louis, MO 63110, USA
| | - Jonathan I Lake
- Department of Pediatrics, Washington University School of Medicine, 660 South Euclid Avenue, St. Louis, MO 63110, USA
| | - Olga A Tusheva
- Department of Pediatrics, Washington University School of Medicine, 660 South Euclid Avenue, St. Louis, MO 63110, USA
| | - Nandor Nagy
- Department of Pediatric Surgery, Massachusetts General Hospital, Harvard Medical School, 55 Fruit St., Boston, MA 02114, USA; Department of Human Morphology and Developmental Biology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Saya K Bery
- Department of Pediatrics, The Children's Hospital of Philadelphia Research Institute and the Perelman School of Medicine at the University of Pennsylvania, Abramson Research Center, 3615 Civic Center Blvd, Philadelphia, PA 19104, USA
| | - Lynne Foster
- Department of Internal Medicine, Washington University School of Medicine, 660 South Euclid Avenue, St. Louis, MO 63110, USA
| | - Marina Avetisyan
- Department of Pediatrics, Washington University School of Medicine, 660 South Euclid Avenue, St. Louis, MO 63110, USA
| | - Stephen L Johnson
- Department of Genetics, Washington University School of Medicine, 660 South Euclid Avenue, St. Louis, MO 63110, USA
| | - William F Stenson
- Department of Internal Medicine, Washington University School of Medicine, 660 South Euclid Avenue, St. Louis, MO 63110, USA
| | - Allan M Goldstein
- Department of Pediatric Surgery, Massachusetts General Hospital, Harvard Medical School, 55 Fruit St., Boston, MA 02114, USA
| | - Robert O Heuckeroth
- Department of Pediatrics, The Children's Hospital of Philadelphia Research Institute and the Perelman School of Medicine at the University of Pennsylvania, Abramson Research Center, 3615 Civic Center Blvd, Philadelphia, PA 19104, USA.
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13
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Riehl TE, Santhanam S, Foster L, Ciorba M, Stenson WF. CD44 and TLR4 mediate hyaluronic acid regulation of Lgr5+ stem cell proliferation, crypt fission, and intestinal growth in postnatal and adult mice. Am J Physiol Gastrointest Liver Physiol 2015; 309:G874-87. [PMID: 26505972 PMCID: PMC4669354 DOI: 10.1152/ajpgi.00123.2015] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 09/13/2015] [Indexed: 01/31/2023]
Abstract
Hyaluronic acid, a glycosaminoglycan in the extracellular matrix, binds to CD44 and Toll-like receptor 4 (TLR4). We previously addressed the role of hyaluronic acid in small intestinal and colonic growth in mice. We addressed the role of exogenous hyaluronic acid by giving hyaluronic acid intraperitoneally and the role of endogenous hyaluronic acid by giving PEP-1, a peptide that blocks hyaluronic acid binding to its receptors. Exogenous hyaluronic acid increased epithelial proliferation but had no effect on intestinal length. PEP-1 resulted in a shortened small intestine and colon and diminished epithelial proliferation. In the current study, we sought to determine whether the effects of hyaluronic acid on growth were mediated by signaling through CD44 or TLR4 by giving exogenous hyaluronic acid or PEP-1 twice a week from 3-8 wk of age to wild-type, CD44(-/-), and TLR4(-/-) mice. These studies demonstrated that signaling through both CD44 and TLR4 were important in mediating the effects of hyaluronic acid on growth in the small intestine and colon. Extending our studies to early postnatal life, we assessed the effects of exogenous hyaluronic acid and PEP-1 on Lgr5(+) stem cell proliferation and crypt fission. Administration of PEP-1 to Lgr5(+) reporter mice from postnatal day 7 to day 14 decreased Lgr5(+) cell proliferation and decreased crypt fission. These studies indicate that endogenous hyaluronic acid increases Lgr5(+) stem cell proliferation, crypt fission, and intestinal lengthening and that these effects are dependent on signaling through CD44 and TLR4.
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Affiliation(s)
- Terrence E. Riehl
- Division of Gastroenterology at Washington University School of Medicine, St. Louis, Missouri
| | - Srikanth Santhanam
- Division of Gastroenterology at Washington University School of Medicine, St. Louis, Missouri
| | - Lynne Foster
- Division of Gastroenterology at Washington University School of Medicine, St. Louis, Missouri
| | - Matthew Ciorba
- Division of Gastroenterology at Washington University School of Medicine, St. Louis, Missouri
| | - William F. Stenson
- Division of Gastroenterology at Washington University School of Medicine, St. Louis, Missouri
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Beevers C, Pearce G, Foster L, Mortimer R. Positive control dose response curves in the in vivo comet assay. Toxicol Lett 2015. [DOI: 10.1016/j.toxlet.2015.08.327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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15
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Mirza A, Foster L, Valentine H, Welch I, West CM, Pritchard S. Investigation of the epithelial to mesenchymal transition markers S100A4, vimentin and Snail1 in gastroesophageal junction tumors. Dis Esophagus 2014; 27:485-92. [PMID: 23082947 DOI: 10.1111/j.1442-2050.2012.01435.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Epithelial to mesenchymal transition (EMT) promotes tumor progression and invasion. As no study has focused on gastroesophageal junction (GEJ) tumors, the expression of three EMT-related proteins (S100A4, vimentin, and Snail1) was investigated with the aim of assessing their pathologic and prognostic significance. Resection specimens were obtained from 104 patients who underwent surgery for GEJ adenocarcinoma, without preoperative chemotherapy. Three tissue cores were obtained from each of the tumor body (TB), luminal surface (LS), and invasive edge (IE) to produce tissue microarrays, and immunohistochemical staining was performed. The microarrays were scored independently by two observers. The demographic and histopathologic details of the patients were collected. Overall positive expression was observed in 88 (S100A4, 85%), 16 (vimentin, 14%), and 92 (Snail1, 89%) tumors. Staining for S100 A4 was positive in 79 (76%) of TB, 69 (66%) of IE, and 69 (66%) of LS specimens. Staining for vimentin was positive in 7 (6%) of TB, 11 (11%) of IE, and 5 (5%) of LS specimens. Staining for Snail1 was positive in 83 (80%) of TB, 51 (49%) of IE, and 78 (75%) of LS specimens. Positive staining of TB for S100A4 (P = 0.04) and Snail1 at IE (P = 0.01) was associated with involvement of circumferential resection margins. Positive staining for S100A4 in the TB (P = 0.02) and LS (P = 0.01) was associated with poor 5-year overall survival. Vimentin had no statistically significant relationships with pathologic factors or outcome. The acquisition of mesenchymal protein S100A4 is associated with a poor prognosis in patients with GEJ tumors who undergo potentially curative surgery, and LS samples can be used to obtain prognostic information. Increased EMT-related protein expression (S100A4, Snail1) is associated with the involvement of circumferential resection margin.
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Affiliation(s)
- A Mirza
- Department of Gastrointestinal Surgery, University Hospital of South Manchester, Manchester, UK; Department of Histopathology, University Hospital of South Manchester, Manchester, UK
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Daley AJ, Foster L, Long G, Palmer C, Robinson O, Walmsley H, Ward R. The effectiveness of exercise for the prevention and treatment of antenatal depression: systematic review with meta-analysis. BJOG 2014; 122:57-62. [DOI: 10.1111/1471-0528.12909] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/05/2014] [Indexed: 11/28/2022]
Affiliation(s)
- AJ Daley
- Primary Care Clinical Sciences; University of Birmingham; Birmingham UK
| | - L Foster
- College of Medical and Dental Sciences; University of Birmingham; Birmingham UK
| | - G Long
- College of Medical and Dental Sciences; University of Birmingham; Birmingham UK
| | - C Palmer
- College of Medical and Dental Sciences; University of Birmingham; Birmingham UK
| | - O Robinson
- College of Medical and Dental Sciences; University of Birmingham; Birmingham UK
| | - H Walmsley
- College of Medical and Dental Sciences; University of Birmingham; Birmingham UK
| | - R Ward
- College of Medical and Dental Sciences; University of Birmingham; Birmingham UK
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17
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Thaker AI, Rao MS, Bishnupuri KS, Kerr TA, Foster L, Marinshaw JM, Newberry RD, Stenson WF, Ciorba MA. IDO1 metabolites activate β-catenin signaling to promote cancer cell proliferation and colon tumorigenesis in mice. Gastroenterology 2013; 145:416-25.e1-4. [PMID: 23669411 PMCID: PMC3722304 DOI: 10.1053/j.gastro.2013.05.002] [Citation(s) in RCA: 124] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Revised: 05/02/2013] [Accepted: 05/07/2013] [Indexed: 12/13/2022]
Abstract
BACKGROUND & AIMS Indoleamine 2,3 dioxygenase-1 (IDO1) catabolizes tryptophan along the kynurenine pathway. Although IDO1 is expressed in inflamed and neoplastic epithelial cells of the colon, its role in colon tumorigenesis is not well understood. We used genetic and pharmacologic approaches to manipulate IDO1 activity in mice with colitis-associated cancer and human colon cancer cell lines. METHODS C57Bl6 wild-type (control), IDO1-/-, Rag1-/-, and Rag1/IDO1 double-knockout mice were exposed to azoxymethane and dextran sodium sulfate to induce colitis and tumorigenesis. Colitis severity was assessed by measurements of disease activity, cytokine levels, and histologic analysis. In vitro experiments were conducted using HCT 116 and HT-29 human colon cancer cells. 1-methyl tryptophan and small interfering RNA were used to inhibit IDO1. Kynurenine pathway metabolites were used to simulate IDO1 activity. RESULTS C57Bl6 mice given pharmacologic inhibitors of IDO1 and IDO1-/- mice had lower tumor burdens and reduced proliferation in the neoplastic epithelium after administration of dextran sodium sulfate and azoxymethane than control mice. These reductions also were observed in Rag1/IDO1 double-knockout mice compared with Rag1-/- mice (which lack mature adaptive immunity). In human colon cancer cells, blockade of IDO1 activity reduced nuclear and activated β-catenin, transcription of its target genes (cyclin D1 and Axin2), and, ultimately, proliferation. Exogenous administration of IDO1 pathway metabolites kynurenine and quinolinic acid led to activation of β-catenin and proliferation of human colon cancer cells, and increased tumor growth in mice. CONCLUSIONS IDO1, which catabolizes tryptophan, promotes colitis-associated tumorigenesis in mice, independent of its ability to limit T-cell-mediated immune surveillance. The epithelial cell-autonomous survival advantage provided by IDO1 to colon epithelial cells indicate its potential as a therapeutic target.
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Foster L, Tate D, Poulton K. A group-specific sequencing approach to investigate the presence of atypical human leucocyte antigen alleles. Int J Immunogenet 2013; 40:453-9. [PMID: 23724946 DOI: 10.1111/iji.12070] [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] [Received: 04/23/2013] [Revised: 05/26/2013] [Accepted: 05/15/2013] [Indexed: 11/29/2022]
Abstract
Accurate human leucocyte antigen (HLA) typing results are essential in determining the degree of compatibility between donor and recipient in both solid organ (SO) and hematopoietic stem cell (HSC) transplantation. Current HLA typing methodologies can generate ambiguous results which may need resolving. This group-specific sequencing approach allowed investigation into the presence of the low expressor HLA-A*24:02:01:02L allele and the rare HLA-A*02:64 allele in a SO transplant recipient and a HSC transplant recipient, respectively. Locus-specific amplification of HLA-A was performed. Exons 2 and 3 were sequenced in both directions followed by group-specific sequencing to resolve ambiguities. Hemizygous sequence data of intron 2 generated from the HLA-A*24 allele indicated the presence of the HLA-A*24:02:01:01 allele. HLA-A*02:64 was identified by sequencing the allele in isolation over exons 2 and 3 and allowed confirmation of this allele sequence with the IMGT/HLA database (Accession number AY297166). This approach is cost efficient and can be modified to sequence alleles at other HLA loci. It has also been adapted to characterize the novel HLA-DQB1*06:48 allele (Accession number HE647646) as well as the non-HLA gene, UGT2B17, making it a useful tool to augment existing typing methodologies.
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Affiliation(s)
- L Foster
- Transplantation Laboratory, Manchester Royal Infirmary, Manchester, UK
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Foster L, Tate D, Poulton K. Characterization of the novel HLA-DQB1*06:48 allele by group-specific sequencing. Int J Immunogenet 2012; 40:322-3. [DOI: 10.1111/iji.12004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Accepted: 09/20/2012] [Indexed: 11/28/2022]
Affiliation(s)
- L. Foster
- Transplantation Laboratory; Manchester Royal Infirmary; Manchester; UK
| | - D. Tate
- Transplantation Laboratory; Manchester Royal Infirmary; Manchester; UK
| | - K. Poulton
- Transplantation Laboratory; Manchester Royal Infirmary; Manchester; UK
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Bohm M, Cotton D, Foster L, Custodis F, Laufs U, Sacco R, Bath PMW, Yusuf S, Diener HC. Impact of resting heart rate on mortality, disability and cognitive decline in patients after ischaemic stroke. Eur Heart J 2012; 33:2804-12. [DOI: 10.1093/eurheartj/ehs250] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Jervis S, Collins P, Tate D, Foster L, Bowman V, Adhern C, Bloor A, Yin J, Wynn R, Poulton K. Increased severity of acute graft versus host disease as a result of differential expression following a homozygous gene deletion. Int J Immunogenet 2012; 40:116-9. [DOI: 10.1111/j.1744-313x.2012.01138.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Revised: 04/23/2012] [Accepted: 05/24/2012] [Indexed: 11/28/2022]
Affiliation(s)
- S. Jervis
- Transplantation Laboratory; Manchester Royal Infirmary; Manchester; UK
| | - P. Collins
- Transplantation Laboratory; Manchester Royal Infirmary; Manchester; UK
| | - D. Tate
- Transplantation Laboratory; Manchester Royal Infirmary; Manchester; UK
| | - L. Foster
- Transplantation Laboratory; Manchester Royal Infirmary; Manchester; UK
| | - V. Bowman
- Transplantation Laboratory; Manchester Royal Infirmary; Manchester; UK
| | - C. Adhern
- Clinical Trials Department; Manchester Royal Infirmary; Manchester; UK
| | - A. Bloor
- Department of Haematology; The Christie Hospital NHS Foundation Trust; Manchester; UK
| | - J. Yin
- Department of Haematology; Manchester Royal Infirmary; Manchester; UK
| | - R. Wynn
- Blood and Marrow Transplant Unit; Royal Manchester Childrens Hospital; Manchester; UK
| | - K. Poulton
- Transplantation Laboratory; Manchester Royal Infirmary; Manchester; UK
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Rickard C, Webster J, Wallis M, Marsh N, McGrail M, French V, Foster L, Gallagher P, Gowardman J, McClymont A, Whitby M. Peripheral intravenous catheters can be left in situ until clinically indicated for removal: Randomised controlled trial. Aust Crit Care 2012. [DOI: 10.1016/j.aucc.2011.12.014] [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: 11/16/2022] Open
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24
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Foster L, Clark T, Patrick T, Foster M, Comadira G. Central line associated bloodstream infection (CLABSI) at gold coast hospital (GCH) intensive care unit. Aust Crit Care 2012. [DOI: 10.1016/j.aucc.2011.12.005] [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: 11/26/2022] Open
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25
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Hamilton B, Lazaryan A, McLellan L, Rybicki L, Foster L, Cooper M, Dabney J, Tench S, Sobecks R, Duong H, Kalaycio M, Bolwell B, Copelan E. Quality of Life and Psychosocial Functioning After Allogeneic Hematopoietic Stem Cell Transplantation (allo-HSCT) from Matched Sibling Compared to Unrelated Donors. Biol Blood Marrow Transplant 2012. [DOI: 10.1016/j.bbmt.2011.12.206] [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: 10/14/2022]
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Abstract
The intestinal epithelium is sensitive to radiation injury. Damage to the intestinal epithelium is dose limiting in radiation therapy of abdominal cancers. There is a need for agents that can be given before radiation therapy to protect the intestinal epithelium. C57BL6 mice were subjected to 12 Gy of total body radiation. Some mice received intraperitoneal hyaluronic acid (HA) before radiation. Mice were killed 6 h after radiation to assess radiation-induced apoptosis in the intestine; other mice were killed at 84 h to assess crypt survival. Total body radiation (12 Gy) resulted in increased expression of HA synthases and HA in the intestine and increased plasma HA (5-fold). Intraperitoneal injection of HA (30 mg/kg) before radiation resulted in a 1.8-fold increase in intestinal crypt survival and a decrease in radiation-induced apoptosis. The radioprotective effects of HA were not seen in Toll-like receptor 4 (TLR4)- or cyclooxygenase-2 (COX-2)-deficient mice. Intraperitoneal injection of HA induced a 1.5-fold increase in intestinal COX-2 expression, a 1.5-fold increase in intestinal PGE₂, and the migration of COX-2-expressing mesenchymal stem cells from the lamina propria in the villi to the lamina propria near the crypt. We conclude that 1) radiation induces increased HA expression through inducing HA synthases, 2) intraperitoneal HA given before radiation reduces radiation-induced apoptosis and increases crypt survival, and 3) these radioprotective effects are mediated through TLR4, COX-2, and the migration of COX-2-expressing mesenchymal stem cells.
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Affiliation(s)
- Terrence E. Riehl
- Division of Gastroenterology, Washington University School of Medicine, St. Louis, Missouri
| | - Lynne Foster
- Division of Gastroenterology, Washington University School of Medicine, St. Louis, Missouri
| | - William F. Stenson
- Division of Gastroenterology, Washington University School of Medicine, St. Louis, Missouri
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Kerr J, Foster L. Sustainable consumption - UK Government activity. NUTR BULL 2011. [DOI: 10.1111/j.1467-3010.2011.01928.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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28
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Penny A, Foster L, Robinson K, Sutliffe C, Jones J. 57 Are Research Participants Truly Informed? Changes in Readability of Informed Consent Over Time. Ann Emerg Med 2011. [DOI: 10.1016/j.annemergmed.2011.06.083] [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: 11/29/2022]
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Engman M, Bystrom B, Varghese S, Lalitkumar PGL, Gemzell-Danielsson K, Romeu C, Urries A, Lierta M, Sanchez Rubio J, Sanz B, Perez I, Casis L, Salerno A, Nazzaro A, Di Iorio L, Bonassisa P, Van Os L, Vink-Ranti CQJ, de Haan-Cramer JH, Rijnders PM, Jansen CAM, Nazzaro A, Salerno A, Marino S, Granato C, Pastore E, Brandes M, Hamilton CJCM, de Bruin JP, Bots RSGM, Nelen WLDM, Kremer JAM, Szkodziak P, Wozniak S, Czuczwar P, Paszkowski T, Wozniak S, Szkodziak P, Czuczwar P, Paszkowski T, Agirregoitia N, Peralta L, Mendoza R, Exposito A, Matorras R, Agirregoitia E, Chuderland D, Ben-Ami I, Kaplan-Kraicer R, Grossman H, Satchi- Fainaro R, Eldar-Boock A, Ron-El R, Shalgi R, Custers IM, Scholten I, Moolenaar LM, Flierman PA, Dessel TJHM, Gerards MH, Cox T, Janssen CAH, van der Veen F, Mol BWJ, Wathlet S, Adriaenssens T, Verheyen G, Coucke W, Smitz J, Feliciani E, Ferraretti AP, Paesano C, Pellizzaro E, Magli MC, Gianaroli L, Hernandez J, Rodriguez-Fuentes A, Garcia-Guzman R, Palumbo A, Radunovic N, Tosic T, Djukic S, Lockwood JC, Adriaenssens T, Wathlet S, Van Landuyt L, Verheyen G, Coucke W, Smitz J, Karayalcin R, Ozcan SARP, Ozyer S, Gurlek B, Kale I, Moraloglu O, Batioglu S, Chaudhury K, Narendra Babu K, Mamata Joshi V, Srivastava S, Chakravarty BN, Viardot-Foucault V, Prasath EB, Tai BC, Chan JKY, Loh SF, Cordeiro I, Leal F, Soares AP, Nunes J, Sousa S, Aguiar A, Carvalho M, Calhaz-Jorge C, Karkanaki A, Piouk A, Katsikis I, Mousatat T, Koiou E, Daskalopoulos GN, Panidis D, Tolikas A, Tsakos E, Gerou S, Prapas Y, Loufopoulos A, Abanto E, Barrenetxea G, Agirregoikoa J, Anarte C, De Pablo JL, Burgos J, Komarovsky D, Friedler S, Gidoni Y, Ben-ami I, Strassburger D, Bern O, Kasterstein E E, Komsky A, Maslansky B, Ron-El R, Raziel A, Fuentes A, Argandona F, Gabler F, Galleguillos A, Torres A, Palomino WA, Gonzalez-Fernandez R, Pena O, Hernandez J, Palumbo A, Avila J, Talebi Chahvar S, Biondini V, Battistoni S, Giannubilo S, Tranquilli AL, Stensen MH, Tanbo T, Storeng R, Abyholm T, Fedorcsak P, Johnson SR, Foster L, Ellis J, Choi JR, Joo JK, Son JB, Lee KS, Helmgaard L, Klein BM, Arce JC, Sanhueza P, Donoso P, Salinas R, Enriquez R, Saez V, Carrasco I, Rios M, Gonzalez P, Macklon N, Guo M, Richardson M, Wilson P, Chian RC, Eapen A, Hrehorcak M, Campbell S, Nargund G, Oron G, Fisch B, Ao A, Freidman O, Zhang XY, Ben-Haroush A, Abir R, Hantisteanu S, Ellenbogen A, Hallak M, Michaeli M, Fainaru O, Maman E, Yong G, Kedem A, Yeruahlmi G, Konopnicki S, Cohen B, Dor J, Hourvitz A, Moshin V, Croitor M, Hotineanu A, Ciorap Z, Rasohin E, Aleyasin A, Agha Hosseini M, Mahdavi A, Safdarian L, Fallahi P, Mohajeri MR, Abbasi M, Esfahani F, Elnashar A, Badawy A, Totongy M, Mohamed H, Mustafa F, Seidman DS, Tadir Y, Goldchmit C, Gilboa Y, Siton A, Mashiach R, Rabinovici J, Yerushalmi GM, Inoue O, Kuji N, Fukunaga T, Ogawa S, Sugawara K, Yamada M, Hamatani T, Hanabusa H, Yoshimura Y, Kato S, Casarini L, La Marca A, Lispi M, Longobardi S, Pignatti E, Simoni M, Halpern G, Braga DPAF, Figueira RCS, Setti AS, Iaconelli Jr. A, Borges Jr. E, Vingris L, Setti AS, Braga DPAF, Figueira RCS, Iaconelli Jr. A, Pasqualotto FF, Borges Jr. E, Collado-Fernandez E, Harris SE, Cotterill M, Elder K, Picton HM, Serra V, Garrido N, Casanova C, Lara C, Remohi J, Bellver J, Steiner HP, Kim CH, You RM, Nah HY, Kang HJ, Kim S, Chae HD, Kang BM, Reig Viader R, Brieno Enriquez MA, Toran N, Cabero L, Giulotto E, Garcia Caldes M, Ruiz-Herrera A, Brieno-Enriquez M, Reig-Viader R, Toran N, Cabero L, Martinez F, Garcia-Caldes M, Velthut A, Zilmer M, Zilmer K, Haller T. Kaart E, Karro H, Salumets A, Bromfield JJ, Sheldon IM, Rezacova J, Madar J, Cuchalova L, Fiserova A, Shao R, Billig H. POSTER VIEWING SESSION - FEMALE (IN) FERTILITY. Hum Reprod 2011. [DOI: 10.1093/humrep/26.s1.82] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Mitton C, Macnab YC, Smith N, Foster L. Injury data in British Columbia: policy maker perspectives on knowledge transfer. Chronic Dis Can 2009; 29:70-79. [PMID: 19281692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Provincial and regional decision makers in the injury prevention field were interviewed in British Columbia (B.C.) to obtain their views about best processes for the transfer or dissemination of relevant data. These decision makers (n = 13) indicated that data should provide them with a holistic and comprehensive picture to support their decision processes. In addition, they felt information about injury types and rates should be linked backward to determinants or causes and forward to consequences or outcomes. This complete chain of data is needed for planning and evaluating health promotion interventions. It was also felt that data providers needed to devote more effort to fostering effective receptor capacity, so that injury prevention professionals will be better able to understand, interpret and apply the data. These findings can likely be generalized to other jurisdictions and policy areas, and offer additional insight into the practicalities of knowledge transfer and exchange in researcher/decision maker partnerships.
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Affiliation(s)
- C Mitton
- Faculty of Health and Social Development, University of British Columbia Okanagan, 3333 University Way, Kelowna, BC V1V 1V7.
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Abstract
We have reviewed the data from our regional Bone Tumour Registry on patients with osteosarcoma diagnosed between 1933 and 2004 in order to investigate the relationship between survival and changes in treatment. There were 184 patients with non-metastatic appendicular osteosarcoma diagnosed at the age of 18 or under. Survival was calculated using Kaplan-Meier curves, and multivariate analysis was performed using the Cox regression proportional hazards model. The five-year survival improved from 21% between 1933 and 1959, to 62% between 1990 and 1999. During this time, a multi-disciplinary organisation was gradually developed to manage treatment. The most significant variable affecting outcome was the date of diagnosis, with trends in improved survival mirroring the introduction of increasingly effective chemotherapy. Our experience suggests that the guidelines of the National Institute for Clinical Excellence on the minimum throughput of centres for treatment should be enforced flexibly in those that can demonstrate that their historical and contemporary results are comparable to those published nationally and internationally.
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Affiliation(s)
- L Foster
- Department of Paediatric Oncology, University of Edinburgh, Royal Hospital for Sick Children, Sciennes Road, Edinburgh EH9 1LW, UK
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Earl H, Hiller L, Dunn JA, Bathers S, Grieve RJ, Spooner D, Agrawal RK, Foster L, Twelves C, Poole CJ. The National Epirubicin Adjuvant Trial (NEAT) and Scottish Cancer Trials Breast Group (SCTBG) br9601 randomized phase III adjuvant early breast cancer trials: The updated definitive joint analysis. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.534] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
534 Background: NEAT and the SCTBG BR9601 trial address the role of Epirubicin (E) as an adjunct to CMF in adjuvant chemotherapy for women with early breast cancer (EBC). Methods: NEAT compared E (100mg/m2 x4cycles) followed by classical (c)CMF (x4cycles) with cCMF (x6cycles); BR9601 compared E (100mg/m2 × 4cycles) followed by iv dose modified CMF q3w (750:50:600 ×4cycles) with iv CMF (x8cycles). Eligibility was completely excised EBC, requiring adjuvant chemotherapy, and start of treatment <10 wks from surgery. Primary outcome measures were relapse-free-survival (RFS) and overall survival (OS). A joint efficacy analysis of NEAT (n=2,021) and BR9601 (n=370) triggered by planned 5-year median follow-up (FU) and estimated 800 RFS events and 600 deaths has 85% power to detect 5% two-sided differences. Results: In 2,391 eligible patients, characteristics were balanced across treatments: 72% node +ve; 59% <50 years old; 47% pre-menopausal; 58% tumours grade 3; 55% >2cms; 32% ER-ve, 50% ER+ve (18% NA). At a median FU of 6.2 yrs, 710 relapses or deaths without relapse and 570 deaths are observed. Despite lower than anticipated event rates in the control arm, these updated results confirm a highly significant benefit in favour of ECMF for both RFS (HR 0.75 (95%CI 0.64–0.87) p=0.0002) and OS (HR 0.74 (0.62–0.87) p=0.0004), independent of trial and prognostic factors. In 1458 NEAT patients (in whom data are available), 68% were to receive tamoxifen; chemotherapy scheduling data is available for 843, of whom 46% were declared concurrent and 54% sequential. In a non-pre-planned retrospective analysis, sequential tamoxifen shows a trend for advantage on RFS (HR 0.78 (0.59–1.02) p=0.06). We have amenorrhoea data on 598 NEAT and BR9601 pre-menopausal women, of whom 72% became amenorrhoeic by the end of chemotherapy. In this instance, developing amenorrhoea showed no advantage for RFS (HR 0.90 (0.65–1.24) or OS (HR 0.99 (0.68–1.44)). Conclusions: This updated definitive analysis adds to the Overview in respect of an anthracycline advantage and confirms ECMF as an established and effective standard adjuvant therapy for EBC. [Table: see text]
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Affiliation(s)
- H. Earl
- University of Cambridge, Cambridge, United Kingdom; University of Warwick, Coventry, United Kingdom; Institute for Cancer Studies, Birmingham, United Kingdom; Walsgrave Hospital, Coventry, United Kingdom; Queen Elizabeth Hospital, Birmingham, United Kingdom; Royal Shrewsbury Hospital, Shropshire, United Kingdom; Scottish Cancer Therapy Network, Edinburgh, United Kingdom; Institute of Cancer Therapeutics, Bradford, United Kingdom
| | - L. Hiller
- University of Cambridge, Cambridge, United Kingdom; University of Warwick, Coventry, United Kingdom; Institute for Cancer Studies, Birmingham, United Kingdom; Walsgrave Hospital, Coventry, United Kingdom; Queen Elizabeth Hospital, Birmingham, United Kingdom; Royal Shrewsbury Hospital, Shropshire, United Kingdom; Scottish Cancer Therapy Network, Edinburgh, United Kingdom; Institute of Cancer Therapeutics, Bradford, United Kingdom
| | - J. A. Dunn
- University of Cambridge, Cambridge, United Kingdom; University of Warwick, Coventry, United Kingdom; Institute for Cancer Studies, Birmingham, United Kingdom; Walsgrave Hospital, Coventry, United Kingdom; Queen Elizabeth Hospital, Birmingham, United Kingdom; Royal Shrewsbury Hospital, Shropshire, United Kingdom; Scottish Cancer Therapy Network, Edinburgh, United Kingdom; Institute of Cancer Therapeutics, Bradford, United Kingdom
| | - S. Bathers
- University of Cambridge, Cambridge, United Kingdom; University of Warwick, Coventry, United Kingdom; Institute for Cancer Studies, Birmingham, United Kingdom; Walsgrave Hospital, Coventry, United Kingdom; Queen Elizabeth Hospital, Birmingham, United Kingdom; Royal Shrewsbury Hospital, Shropshire, United Kingdom; Scottish Cancer Therapy Network, Edinburgh, United Kingdom; Institute of Cancer Therapeutics, Bradford, United Kingdom
| | - R. J. Grieve
- University of Cambridge, Cambridge, United Kingdom; University of Warwick, Coventry, United Kingdom; Institute for Cancer Studies, Birmingham, United Kingdom; Walsgrave Hospital, Coventry, United Kingdom; Queen Elizabeth Hospital, Birmingham, United Kingdom; Royal Shrewsbury Hospital, Shropshire, United Kingdom; Scottish Cancer Therapy Network, Edinburgh, United Kingdom; Institute of Cancer Therapeutics, Bradford, United Kingdom
| | - D. Spooner
- University of Cambridge, Cambridge, United Kingdom; University of Warwick, Coventry, United Kingdom; Institute for Cancer Studies, Birmingham, United Kingdom; Walsgrave Hospital, Coventry, United Kingdom; Queen Elizabeth Hospital, Birmingham, United Kingdom; Royal Shrewsbury Hospital, Shropshire, United Kingdom; Scottish Cancer Therapy Network, Edinburgh, United Kingdom; Institute of Cancer Therapeutics, Bradford, United Kingdom
| | - R. K. Agrawal
- University of Cambridge, Cambridge, United Kingdom; University of Warwick, Coventry, United Kingdom; Institute for Cancer Studies, Birmingham, United Kingdom; Walsgrave Hospital, Coventry, United Kingdom; Queen Elizabeth Hospital, Birmingham, United Kingdom; Royal Shrewsbury Hospital, Shropshire, United Kingdom; Scottish Cancer Therapy Network, Edinburgh, United Kingdom; Institute of Cancer Therapeutics, Bradford, United Kingdom
| | - L. Foster
- University of Cambridge, Cambridge, United Kingdom; University of Warwick, Coventry, United Kingdom; Institute for Cancer Studies, Birmingham, United Kingdom; Walsgrave Hospital, Coventry, United Kingdom; Queen Elizabeth Hospital, Birmingham, United Kingdom; Royal Shrewsbury Hospital, Shropshire, United Kingdom; Scottish Cancer Therapy Network, Edinburgh, United Kingdom; Institute of Cancer Therapeutics, Bradford, United Kingdom
| | - C. Twelves
- University of Cambridge, Cambridge, United Kingdom; University of Warwick, Coventry, United Kingdom; Institute for Cancer Studies, Birmingham, United Kingdom; Walsgrave Hospital, Coventry, United Kingdom; Queen Elizabeth Hospital, Birmingham, United Kingdom; Royal Shrewsbury Hospital, Shropshire, United Kingdom; Scottish Cancer Therapy Network, Edinburgh, United Kingdom; Institute of Cancer Therapeutics, Bradford, United Kingdom
| | - C. J. Poole
- University of Cambridge, Cambridge, United Kingdom; University of Warwick, Coventry, United Kingdom; Institute for Cancer Studies, Birmingham, United Kingdom; Walsgrave Hospital, Coventry, United Kingdom; Queen Elizabeth Hospital, Birmingham, United Kingdom; Royal Shrewsbury Hospital, Shropshire, United Kingdom; Scottish Cancer Therapy Network, Edinburgh, United Kingdom; Institute of Cancer Therapeutics, Bradford, United Kingdom
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MacNab YC, Hu W, Barnard KD, Shep S, Lin Y, Foster L, Mitton C. Bayesian Disease Mapping and Gis-Based Spatiotemporal Iatrogenic Injury Surveillance. Am J Epidemiol 2006. [DOI: 10.1093/aje/163.suppl_11.s28-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: 11/13/2022] Open
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Amphlett G, Cacia J, Callahan W, Cannova-Davis E, Chang B, Cleland JL, Darrington T, DeYoung L, Dhingra B, Everett R, Foster L, Frenz J, Garcia A, Giltinan D, Gitlin G, Gombotz W, Hageman M, Harris R, Heller D, Herman A, Hershenson S, Hora M, Ingram R, Janes S, Watanabe C. A compendium and hydropathy/flexibility analysis of common reactive sites in proteins: reactivity at Asn, Asp, Gln, and Met motifs in neutral pH solution. Pharm Biotechnol 2002; 9:1-140. [PMID: 8914190 DOI: 10.1007/0-306-47452-2_1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- G Amphlett
- Department of pharmaceutical Research and Development, Genentech, Inc., South San Francisco, California 94080, USA
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35
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Abstract
This article describes a case of necrotizing fasciitis in a 52-year-old man with previously undiagnosed diabetes. Treatment involved massive debridement and subsequent dressing of the open surgical wound. A modern hydrofibre dressing (Aquacel) was inserted intraoperatively and subsequently continued postoperatively. Wound healing occurred over 3 months and the patient was discharged with no disability. The dressing managed the exudate level and kept the wound moist. It also was well tolerated by the patient, was comfortable and easy for the nurses to remove and apply.
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Affiliation(s)
- L Foster
- Department of Effective Healthcare, Scunthorpe and Goole Hospitals NHS Trust, North Lincolnshire
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37
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Espinosa A, Yan L, Zhang Z, Foster L, Clark D, Li E, Stanley SL. The bifunctional Entamoeba histolytica alcohol dehydrogenase 2 (EhADH2) protein is necessary for amebic growth and survival and requires an intact C-terminal domain for both alcohol dahydrogenase and acetaldehyde dehydrogenase activity. J Biol Chem 2001; 276:20136-43. [PMID: 11274185 PMCID: PMC4816598 DOI: 10.1074/jbc.m101349200] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The intestinal protozoan pathogen Entamoeba histolytica lacks mitochondria and derives energy from the fermentation of glucose to ethanol with pyruvate, acetyl enzyme Co-A, and acetaldehyde as intermediates. A key enzyme in this pathway may be the 97-kDa bifunctional E. histolytica alcohol dehydrogenase 2 (EhADH2), which possesses both alcohol dehydrogenase (ADH) and acetaldehyde dehydrogenase activity (ALDH). EhADH2 appears to be a fusion protein, with separate N-terminal ALDH and C-terminal ADH domains. Here, we demonstrate that EhADH2 expression is required for E. histolytica growth and survival. We find that a mutant EhADH2 enzyme containing the C-terminal 453 amino acids of EhADH2 has ADH activity but lacks ALDH activity. However, a mutant consisting of the N-terminal half of EhADH2 possessed no ADH or ALDH activity. Alteration of a single histidine to arginine in the putative active site of the ADH domain eliminates both ADH and ALDH activity, and this mutant EhADH2 can serve as a dominant negative, eliminating both ADH and ALDH activity when co-expressed with wild-type EhADH2 in Escherichia coli. These data indicate that EhADH2 enzyme is required for E. histolytica growth and survival and that the C-terminal ADH domain of the enzyme functions as a separate entity. However, ALDH activity requires residues in both the N- and C-terminal halves of the molecule.
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Affiliation(s)
- Avelina Espinosa
- Department of Medicine, Washington University School of Medicine, St. Louis, Missouri 63110
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, Missouri 63110
| | - Le Yan
- Department of Medicine, Washington University School of Medicine, St. Louis, Missouri 63110
| | - Zhi Zhang
- Department of Medicine, Washington University School of Medicine, St. Louis, Missouri 63110
| | - Lynne Foster
- Department of Medicine, Washington University School of Medicine, St. Louis, Missouri 63110
| | - David Clark
- Department of Microbiology, Southern Illinois University, Carbondale, Illinois 62901
| | - Ellen Li
- Department of Medicine, Washington University School of Medicine, St. Louis, Missouri 63110
- Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine, St. Louis, Missouri 63110
| | - Samuel L. Stanley
- Department of Medicine, Washington University School of Medicine, St. Louis, Missouri 63110
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, Missouri 63110
- Burroughs Wellcome Scholar in Molecular Parasitology. To whom correspondence should be addressed. Tel.: 314-362-107; Fax: 314-362-3525;
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38
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Abstract
OBJECTIVES To investigate the efficacy of botulinum toxin A in chronic low back pain and associated disabilities. METHODS Thirty-one consecutive patients with chronic low back pain who met the inclusion criteria were studied: 15 received 200 units of botulinum toxin type A, 40 units/site at five lumbar paravertebral levels on the side of maximum discomfort, and 16 received normal saline. Each patient's baseline level of pain and degree of disability was documented using the visual analogue scale (VAS) and the Oswestry Low Back Pain Questionnaire (OLBPQ). The authors reevaluated the patients at 3 and 8 weeks (visual analogue scale) and at 8 weeks (OLBPQ). RESULTS At 3 weeks, 11 of 15 patients who received botulinum toxin (73.3%) had >50% pain relief vs four of 16 (25%) in the saline group (p = 0.012). At 8 weeks, nine of 15 (60%) in the botulinum toxin group and two of 16 (12.5%) in the saline group had relief (p = 0.009). Repeat OLBPQ at 8 weeks showed improvement in 10 of 15 (66.7%) in the botulinum toxin group vs three of 16 (18.8%) in the saline group (p = 0.011). No patient experienced side effects. CONCLUSION Paravertebral administration of botulinum toxin A in patients with chronic low back pain relieved pain and improved function at 3 and 8 weeks after treatment.
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Affiliation(s)
- L Foster
- Department of Physical Medicine & Rehabilitation, Walter Reed Army Medical Center, Washington, DC, USA
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39
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Neal DE, Foster L. Southern Illinois University (SIU) sling-bone anchored semitendinosus. Tech Urol 2001; 7:62-3. [PMID: 11272682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
We describe a new type of pubovaginal sling that uses autologous fascia and minimizes the discomfort of harvest. The harvest is technically easy. The results are comparable to those of other slings previously described.
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Affiliation(s)
- D E Neal
- Division of Urology, SIU School of Medicine, Springfield, Illinois, USA
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40
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Meadows KA, Greene T, Foster L, Beer S. The impact of different response alternatives on responders' reporting of health-related behaviour in a postal survey. Qual Life Res 2001; 9:385-91. [PMID: 11131931 DOI: 10.1023/a:1008971602505] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Previous experimental research in other topic areas has shown that the choice of response alternatives can influence respondents' reporting of the frequency of vaguely defined events and that the set of response alternatives is treated as information in the interpretation of the question. The aim of this study was to examine whether such affects would occur in the context of respondents reporting of health-related events using high and medium frequency closed format response categories, which might be used interchangeably by researchers. The study consisted of a postal survey of n = 518 patients aged > or = 18 years randomly selected from the patient list of a diabetes centre and who were equally and randomly allocated to one of three conditions (Condition A: high frequency response alternatives/horizontal orientation; condition B: medium frequency response alternatives/horizontal orientations; condition C: high frequency response alternatives/vertical orientation). Testing for the effect of response alternatives for the combined responses of five vaguely defined questions between conditions A and B was chi 2 = 5.5, p = 0.019, for the difference in proportions, indicating that overall, those respondents presented with response alternatives discriminating at medium frequency, reported significantly fewer target events than those presented with high frequency response alternatives. Testing for the effect of orientation of the combined question responses between conditions A and C, differences in proportions between conditions, did not reach statistical significance (p > 0.05). Findings from this and previous studies indicate that response alternatives provide information on the interpretation of vaguely defined questionnaire items and that their choice should not be left to intuition alone when designing questionnaire items.
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Affiliation(s)
- K A Meadows
- Health and Survey Research Unit, Applied Statistics Centre, University of Hull, UK.
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41
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Foster L, James S. Human resources. Getting even. Health Serv J 2001; 111:28-9. [PMID: 11256116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
A trust where a third of the workforce is a member of ethnic minority groups has set up a programme to enhance career advancement for this group. The programme aims to celebrate the achievements of ethnic minority staff and give them greater visibility within the organisation. Mentoring programmes and learning sets have been established with the support of senior.
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Copeland RA, Marcinkeviciene J, Haque TS, Kopcho LM, Jiang W, Wang K, Ecret LD, Sizemore C, Amsler KA, Foster L, Tadesse S, Combs AP, Stern AM, Trainor GL, Slee A, Rogers MJ, Hobbs F. Helicobacter pylori-selective antibacterials based on inhibition of pyrimidine biosynthesis. J Biol Chem 2000; 275:33373-8. [PMID: 10938275 DOI: 10.1074/jbc.m004451200] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
We report the discovery of a class of pyrazole-based compounds that are potent inhibitors of the dihydroorotate dehydrogenase of Helicobacter pylori but that do not inhibit the cognate enzymes from Gram-positive bacteria or humans. In culture these compounds inhibit the growth of H. pylori selectively, showing no effect on other Gram-negative or Gram-positive bacteria or human cell lines. These compounds represent the first examples of H. pylori-specific antibacterial agents. Cellular activity within this structural class appears to be due to dihydroorotate dehydrogenase inhibition. Minor structural changes that abrogate in vitro inhibition of the enzyme likewise eliminate cellular activity. Furthermore, the minimum inhibitory concentrations of these compounds increase upon addition of orotate to the culture medium in a concentration-dependent manner, consistent with dihydroorotate dehydrogenase inhibition as the mechanism of cellular inhibition. The data presented here suggest that targeted inhibition of de novo pyrimidine biosynthesis may be a valuable mechanism for the development of antimicrobial agents selective for H. pylori.
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Affiliation(s)
- R A Copeland
- Department of Chemical Enzymology, the Department of Chemical and Physical Sciences, and the Antimicrobials Group, DuPont Pharmaceuticals Company, Wilmington, Delaware 19880-0400, USA
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Abstract
This study aimed to compare the performance of a hydrofibre (Aquacel) and an alginate (Sorbsan) dressing on acute surgical wounds left to heal by secondary intention. A total of 100 patients were prospectively randomised pre-operatively to receive either the hydrofibre or the alginate dressing. Dressing performance was measured at operation, at 24 hours and seven days. Parameters measured included ease of: application and removal of the first dressing; re-application on the first postoperative day; and removal and re-application one week postoperatively. The hydrofibre dressing received higher scores for all of these categories. Patients in this group also experienced less pain (mild or none) on removal of the first dressing and at one week. However, these results did not achieve statistical significance, and should be seen as a trend. Nevertheless, the authors recommend the use of hydrofibre dressings on open acute surgical wounds.
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Affiliation(s)
- L Foster
- Department of Effective Health Care, Scunthorpe and Goole Hospitals NHS Trust, UK
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44
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Abstract
In this prospective randomized controlled trial of the cost benefits of the choice of dressings in acute surgical wounds left to heal by secondary intention, patients had their wounds dressed with either a traditional dressing (ribbon gauze soaked in proflavine) or a modern hydrofibre dressing. Results showed that the hydrofibre dressing, although more expensive than the ribbon gauze, facilitated an earlier discharge from hospital (P = 0.001). The total cost of the patient episode was less in the hydrofibre group (P = 0.01). In an average UK health authority of 300,000 population, 100 bed days a year could be saved releasing an overall potential saving of 55,000 Pounds. A modern hydrofibre dressing allows more effective use of scarce hospital beds and precious financial resources, while still maintaining high quality patient care. It is important that clinical specialists and purchasers of health care should be aware of this clinical and cost-effective advance in the management of acute surgical wounds.
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Affiliation(s)
- P J Moore
- Department of Effective Healthcare, Scunthorpe and Goole Hospitals NHS Trust, Cliff Gardens, Scunthorpe, North Lincolnshire
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45
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Abstract
This report describes an unusual presentation of squamous cell carcinoma of the anal canal involving the vagina; radical surgery resulted in a large cavity wound.
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Affiliation(s)
- P Moore
- Department of Effective Healthcare, Scunthorpe & Goole Hospitals NHS Trust, UK
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46
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Robertson J, Murdoch S, Foster L, Green S. Isolation and species typing of Lyme borreliosis spirochaetes from UK patients with erythema migrans. Eur J Epidemiol 1999; 15:499-500. [PMID: 10442477 DOI: 10.1023/a:1007591501411] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Skin biopsies taken from UK cases of erythema migrans rash were cultured for Borrelia burgdorferi sensu lato. Reverse line blotting was used to type the infecting genospecies in PCR-positive cultures and biopsies. B. garinii or B. afzelii was identified in 56% (5/9) of biopsies/cultures tested. All patients were tested by conventional serology. PCR confirmed infection in two patients where serological testing failed to detect antibody.
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Affiliation(s)
- J Robertson
- Lyme Disease Reference Unit, Public Health Laboratory, Southampton General Hospital, UK.
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Abstract
This article, the last in a series of four, discusses the importance of documenting wound care. Studies have shown that nurses do not document wound care as often, or as accurately, as they should in order to comply with the UKCC's (1998) Guidelines for Records and Record Keeping. Although some wound assessment charts have been published and are in use, there is still concern about the validity or reliability of some of these charts. Studies show that further research is necessary in order to validate the charts that are currently in use. An increase in litigation has placed more emphasis on accurate record keeping which shows, in detail, the wound care that is given to each patient. Patients also want to be more informed about their treatment, and this can be done through the use of clinical pathways or multidisciplinary documents. This article also discusses the factors that have to be considered when putting a wound care chart together and gives some examples of existing charts.
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Affiliation(s)
- L Foster
- Department of Effective Healthcare, Scunthorpe and Goole Hospitals NHS Trust, North Lincolnshire
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48
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Abstract
The third article in this series on surgical wound care discusses the types of dressings currently available, and selection of the correct dressing for a particular wound type. There is an abundance of information on the types of dressings available. Wound management for the individual patient must be decided using best evidence and taking into account patients' increased involvement in their care, new technology and the push to mobilize early, leading to early discharge from hospital. The nurse needs to have a good knowledge of the types of dressings available, the properties of individual dressings and a sound understanding of wound healing, in order to make an informed decision on wound management. General factors such as safety, comfort, pain management and convenience must be borne in mind when deciding which dressing is the best for individual patients, given that dressings now have to be cost-effective as well as clinically effective.
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Affiliation(s)
- L Foster
- Department of Effective Healthcare, Scunthorpe Hospital, NHS Trust, North Lincolnshire
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Abstract
A brief survey of eight motor habits, including body-rocking, was administered to two large samples of college undergraduates. A subsample was retested to establish survey reliability and validity. Those indicating engagement in body-rocking were interviewed about their body-rocking. Two psychopathology instruments were administered. The general prevalence of self-described body-rocking was higher than expected, and there were positive correlations among the eight habits. Body-rocking was usually related to negative affect and usually reported to begin during the school years and later. Many individuals said other family members engaged in body-rocking. Psychopathology assessments indicated higher levels of general distress and higher prevalence of Generalized Anxiety Disorder in this subsample compared with a group not reporting body-rocking.
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50
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Bongarzone ER, Foster L, Byravan S, Casaccia-Bonnefil P, Schonmann V, Campagnoni AT. Two neuronal cell lines expressing the myelin basic protein gene display differences in their in vitro survival and in their response to glia. J Neurosci Res 1998; 54:309-19. [PMID: 9819136 DOI: 10.1002/(sici)1097-4547(19981101)54:3<309::aid-jnr2>3.0.co;2-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [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: 11/06/2022]
Abstract
We have generated two conditionally immortalized neuronal cell lines from primary cultures of embryonic day 13 (E13) and postmitotic (postnatal day 0; P0) cortical neurons transformed with the temperature-sensitive SV-40 large-T antigen. Two clonal cell lines (CN1.4 from E13 cultures and SJ3.6 from P0 cultures) were isolated and stable maintained in vitro. Both cell lines expressed a number of neuronal markers such as the neurofilaments, glutamic acid decarboxylase 67, neuron-specific enolase, and the BG21 isoform of the myelin basic protein gene. At 34 degrees C, the CN1.4 cell line had elaborated short processes, whereas the SJ3.6 cell line produced long processes that formed a delicate network. When these cell lines were cultured at 39 degrees C, some of the cellular processes grew longer, adopting a more mature neuronal morphology. Interestingly, at 39 degrees C, the in vitro survival of these cell lines differed significantly. Whereas the survival of CN1.4 cell line was greatly unaffected, SJ3.6 cells died soon after they were cultured at 39 degrees C. The cell death of SJ3.6 cells was accompanied by fragmentation and condensation of DNA in their nuclei, indicative of an apoptotic event. Under these conditions, SJ3.6 showed an upregulation of the p75 receptor. When this cell line was cocultured with oligodendrocytes, astrocytes, or glial conditioned media (GCM), there was a marked increase in survival. In contrast, little effect of glial cells or GCM was observed on the CN1.4 cell line. These lines appear to be useful models to study neuronal-glial interactions in addition to neuronal cell death and the effects of glial factors that promote the survival of neurons.
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Affiliation(s)
- E R Bongarzone
- Mental Retardation Research Center, School of Medicine, University of California, Los Angeles 90024, USA
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