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Haley E, Luke N, Mathur M, Festa RA, Wang J, Jiang Y, Anderson LA, Baunoch D. The Prevalence and Association of Different Uropathogens Detected by M-PCR with Infection-Associated Urine Biomarkers in Urinary Tract Infections. Res Rep Urol 2024; 16:19-29. [PMID: 38221993 PMCID: PMC10787514 DOI: 10.2147/rru.s443361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 12/16/2023] [Indexed: 01/16/2024] Open
Abstract
Background Many emerging uropathogens are currently identified by multiplex polymerase chain reaction (M-PCR) in suspected UTI cases. Standard urine culture (SUC) has significantly lower detection rates, raising questions about whether these organisms are associated with UTIs and truly cause inflammation. Objective To determine if microbes detected by M-PCR were likely causative of UTI by measuring inflammatory biomarkers in the urine of symptomatic patients. Design Setting and Participants Midstream voided urine was collected from subjects ≥60 years presenting to urology clinics with symptoms of UTI (n = 1132) between 01/2023 and 05/2023. Microbe detection was by M-PCR and inflammation-associated biomarker (neutrophil gelatinase-associated lipocalin, interleukin 8, and interleukin 1β) was by enzyme-linked immunosorbent assay. Biomarker positivity was measured against individual and groups of organisms, E. coli and non-E. coli cases, emerging uropathogens, monomicrobial and polymicrobial cases. Outcome Measurements and Statistical Analysis Distributions were compared using 2-sample Wilcoxon Rank Sum test with 2-tailed p-values < 0.05 considered statistically significant. Results and Limitations M-PCR was positive in 823 (72.7%) specimens with 28 of 30 (93%) microorganisms/groups detected. Twenty-six of twenty-eight detected microorganisms/groups (93%) had ≥2 biomarkers positive in >66% of cases. Both non-E. coli cases and E. coli cases had significant biomarker positivity (p < 0.05). Limitations were that a few organisms had low prevalence making inferences about their individual significance difficult. Conclusion The majority of microorganisms identified by M-PCR were associated with active inflammation measured by biomarker positivity, indicating they are likely causative of UTIs in symptomatic patients. This includes emerging uropathogens frequently not detected by standard urine culture.
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Affiliation(s)
- Emery Haley
- Department of Clinical Research, Pathnostics, Irvine, CA, USA
| | - Natalie Luke
- Department of Clinical Research, Pathnostics, Irvine, CA, USA
| | - Mohit Mathur
- Department of Medical Affairs, Pathnostics, Irvine, CA, USA
| | - Richard A Festa
- Department of Research and Development, Pathnostics, Irvine, CA, USA
| | - Jimin Wang
- Department of Statistical Analysis, Stat4Ward, Pittsburgh, PA, USA
| | - Yan Jiang
- Department of Statistical Analysis, Stat4Ward, Pittsburgh, PA, USA
| | - Lori A Anderson
- L.Anderson Diagnostic Market Access Consulting, San Diego, CA, USA
| | - David Baunoch
- Department of Research and Development, Pathnostics, Irvine, CA, USA
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Wang D, Haley E, Luke N, Mathur M, Festa RA, Zhao X, Anderson LA, Allison JL, Stebbins KL, Diaz MJ, Baunoch D. Emerging and Fastidious Uropathogens Were Detected by M-PCR with Similar Prevalence and Cell Density in Catheter and Midstream Voided Urine Indicating the Importance of These Microbes in Causing UTIs. Infect Drug Resist 2023; 16:7775-7795. [PMID: 38148772 PMCID: PMC10750486 DOI: 10.2147/idr.s429990] [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] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Accepted: 11/29/2023] [Indexed: 12/28/2023] Open
Abstract
Introduction This study compared microbial compositions of midstream and catheter urine specimens from patients with suspected complicated urinary tract infections to determine if emerging and fastidious uropathogens are infecting the bladder or are contaminants. Methods Urine was collected by in-and-out catheter (n = 1000) or midstream voiding (n = 1000) from 2000 adult patients (≥60 years of age) at 17 DispatchHealth sites across 11 states. The two groups were matched by age (mean 81 years), sex (62.1% female, 37.9% male), and ICD-10-CM codes. Microbial detection was performed with multiplex polymerase chain reaction (M-PCR) with a threshold for "positive detection" ≥ 10,000 cells/mL for bacteria or any detection for yeast. Results were divided by sex. Results In females, 28 of 30 microorganisms/groups were found by both collection methods, while in males 26 of 30 were found by both. There were significant overlaps in the detection and densities of classical uropathogens including Escherichia coli, Enterococcus faecalis, and Klebsiella pneumoniae, as well as emerging uropathogens including Actinotignum schaalii and Aerococcus urinae. In females, detection rates were slightly higher in midstream voided compared to catheter-collected (p = 0.0005) urine samples, while males showed the opposite trend (p < 0.0001). More polymicrobial infections were detected in midstream voided compared to catheter-collected samples (64.4% vs 45.7%, p < 0.0001) in females but the opposite in males (35.6% vs 47.0%, p = 0.002). Discussion In-and-out catheter-collected and midstream voided urine specimens shared significant similarities in microbial detections by M-PCR, with some differences found for a small subset of organisms and between sexes. Conclusion Non-invasive midstream voided collection of urine specimens for microbial detection and identification in cases of presumed UTI does not result in significantly more contamination compared to in-and-out catheter-collected specimens. Additionally, organisms long regarded as contaminants should be reconsidered as potential uropathogens.
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Affiliation(s)
- Dakun Wang
- Department of Writing, Stat4Ward, Pittsburgh, PA, USA
| | - Emery Haley
- Department of Clinical Research, Pathnostics, Irvine, CA, USA
| | - Natalie Luke
- Department of Clinical Research, Pathnostics, Irvine, CA, USA
| | - Mohit Mathur
- Department of Medical Affairs, Pathnostics, Irvine, CA, USA
| | | | - Xinhua Zhao
- Department of Statistical Analysis, Stat4Ward, Pittsburgh, PA, USA
| | - Lori A Anderson
- L. Anderson Diagnostic Market Access Consulting, San Diego, CA, USA
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Voskamp C, Anderson LA, Koevoet WJ, Barnhoorn S, Mastroberardino PG, van Osch GJ, Narcisi R. TWIST1 controls cellular senescence and energy metabolism in mesenchymal stem cells. Eur Cell Mater 2021; 42:401-414. [PMID: 34825700 DOI: 10.22203/ecm.v042a25] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Mesenchymal stem cells (MSCs) are promising cells for regenerative medicine therapies because they can differentiate towards multiple cell lineages. However, the occurrence of cellular senescence and the acquiring of the senescence-associated secretory phenotype (SASP) limit their clinical use. Since the transcription factor TWIST1 influences expansion of MSCs, its role in regulating cellular senescence was investigated. The present study demonstrated that silencing of TWIST1 in MSCs increased the occurrence of senescence, characterised by a SASP profile different from irradiation-induced senescent MSCs. Knowing that senescence alters cellular metabolism, cellular bioenergetics was monitored by using the Seahorse XF apparatus. Both TWIST1-silencing-induced and irradiation-induced senescent MSCs had a higher oxygen consumption rate compared to control MSCs, while TWIST1-silencing-induced senescent MSCs had a low extracellular acidification rate compared to irradiation-induced senescent MSCs. Overall, data indicated how TWIST1 regulation influenced senescence in MSCs and that TWIST1 silencing-induced senescence was characterised by a specific SASP profile and metabolic state.
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Affiliation(s)
| | | | | | | | | | | | - R Narcisi
- Department of Orthopaedics and Sports Medicine, Erasmus MC, 3015 CN Rotterdam, the
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McNall S, Holmes D, Anderson LA, Fraiman M, Dixon CM. Rapid growth of a large penile median raphe cyst. Urol Case Rep 2021; 39:101864. [PMID: 34631429 PMCID: PMC8488025 DOI: 10.1016/j.eucr.2021.101864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 09/27/2021] [Indexed: 11/18/2022] Open
Abstract
A 57-year-old male presented to the emergency department due to sudden growth of a penile mass. On physical exam, the mass was located on the ventral surface of the penis at the level of the corona and measured 7cm × 4cm x 3.5cm. Ultrasound suggested that it was cystic in nature. The mass was surgically removed, and final pathology revealed a median raphe cyst.
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Affiliation(s)
- Shannon McNall
- New York Medical College, 40 Sunshine Cottage Rd., Valhalla, NY, 10591, USA
- Corresponding author.
| | - Diana Holmes
- Pathology Assistant, Orange Pathology Associates, 707 East Main St., Middletown, NY, 10940, USA
| | - Lori A. Anderson
- Chief of Anatomic Pathology, Good Samaritan Hospital, 255 Lafayette Ave., Suffern, NY, 10901, USA
| | - Mitchell Fraiman
- Bon Secours Medical Group, Division of Urology, Good Samaritan Hospital, 255 Lafayette Ave., Suffern, NY, 10901, USA
| | - Christopher M. Dixon
- Bon Secours Medical Group, Division of Urology, Good Samaritan Hospital, 255 Lafayette Ave., Suffern, NY, 10901, USA
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Livermore AT, Anderson LA, Anderson MB, Erickson JA, Peters CL. Correction of mildly dysplastic hips with periacetabular osteotomy demonstrates promising outcomes, achievement of correction goals, and excellent five-year survivorship. Bone Joint J 2019; 101-B:16-22. [PMID: 31146564 DOI: 10.1302/0301-620x.101b6.bjj-2018-1487.r1] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [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: 11/05/2022]
Abstract
AIMS The aim of this study was to compare patient-reported outcome measures (PROMs), radiological measurements, and total hip arthroplasty (THA)-free survival in patients who underwent periacetabular osteotomy (PAO) for mild, moderate, or severe developmental dysplasia of the hip. PATIENTS AND METHODS We performed a retrospective study involving 336 patients (420 hips) who underwent PAO by a single surgeon at an academic centre. After exclusions, 124 patients (149 hips) were included. The preoperative lateral centre-edge angle (LCEA) was used to classify the severity of dysplasia: 18° to 25° was considered mild (n = 20), 10° to 17° moderate (n = 66), and < 10° severe (n = 63). There was no difference in patient characteristics between the groups (all, p > 0.05). Pre- and postoperative radiological measurements were made. The National Institute of Health's Patient Reported Outcomes Measurement Information System (PROMIS) outcome measures (physical function computerized adaptive test (PF CAT), Global Physical and Mental Health Scores) were collected. Failure was defined as conversion to THA or PF CAT scores < 40, and was assessed with Kaplan-Meier analysis. The mean follow-up was five years (2 to 10) ending in either failure or the latest contact with the patient. RESULTS There was no significant difference in PROMs for moderate (p = 0.167) or severe (p = 0.708) groups compared with the mild dysplasia group. The numerical pain scores were between 2 and 3 units in all groups at the final follow-up (all, p > 0.05). There was no significant difference (all, p > 0.05) in the proportion of patients achieving target correction for the LCEA between groups. The mean correction was 12° in the mild, 15° in the moderate (p = 0.135), and 23° in the severe group (p < 0.001). Failure-free survival at five years was 100% for mild, 79% for moderate, and 92% for severely dysplastic hips (p = 0.225). CONCLUSION Although requiring less correction than hips with moderate or severe dysplasia, we found PAO for mild dysplasia to be associated with promising PROMs, consistent with that of the general United States population, and excellent survivorship at five years. Future studies should compare these results with the outcome after arthroscopy of the hip in patients with mild dysplasia. Cite this article: Bone Joint J 2019;101-B(6 Supple B):16-22.
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Affiliation(s)
- A T Livermore
- Department of Orthopaedics, University of Utah, Salt Lake City, Utah, USA
| | - L A Anderson
- Department of Orthopaedics, University of Utah, Salt Lake City, Utah, USA
| | - M B Anderson
- Department of Orthopaedics, University of Utah, Salt Lake City, Utah, USA
| | - J A Erickson
- Department of Orthopaedics, University of Utah, Salt Lake City, Utah, USA
| | - C L Peters
- Department of Orthopaedics, University of Utah, Salt Lake City, Utah, USA
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Cook MB, Wood S, Hyland PL, Caron P, Drahos J, Falk RT, Pfeiffer RM, Dawsey SM, Abnet CC, Taylor PR, Guillemette C, Murray LJ, Anderson LA. Sex steroid hormones in relation to Barrett's esophagus: an analysis of the FINBAR Study. Andrology 2017; 5:240-247. [PMID: 28241109 DOI: 10.1111/andr.12314] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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: 06/09/2016] [Revised: 10/25/2016] [Accepted: 11/16/2016] [Indexed: 12/16/2022]
Abstract
Previously, we observed strong positive associations between circulating concentrations of free testosterone and free dihydrotestosterone (DHT) in relation to Barrett's esophagus in a US male military population. To replicate these findings, we conducted a second study of sex steroid hormones and Barrett's esophagus in the Factors Influencing the Barrett/Adenocarcinoma Relationship (FINBAR) Study based in Northern Ireland and Ireland. We used mass spectrometry to quantitate EDTA plasma concentrations of nine sex steroid hormones and ELISA to quantitate sex hormone-binding globulin in 177 male Barrett's esophagus cases and 185 male general population controls within the FINBAR Study. Free testosterone, free DHT, and free estradiol were estimated using standard formulas. Multivariable logistic regression estimated odds ratios (OR) and 95% confidence intervals (95%CI) of associations between exposures and Barrett's esophagus. While plasma hormone and sex hormone-binding globulin concentrations were not associated with all cases of Barrett's esophagus, we did observe positive associations with estrogens in younger men (e.g. estrone + estradiol ORcontinuous per ½IQR = 2.92, 95%CI:1.08, 7.89), and free androgens in men with higher waist-to-hip ratios (e.g. free testosterone ORcontinuous per ½IQR = 2.71, 95%CI:1.06, 6.92). Stratification by body mass index, antireflux medications, and geographic location did not materially affect the results. This study found evidence for associations between circulating sex steroid hormones and Barrett's esophagus in younger men and men with higher waist-to-hip ratios. Further studies are necessary to elucidate whether sex steroid hormones are consistently associated with esophageal adenocarcinogenesis.
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Affiliation(s)
- M B Cook
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, MD, USA
| | - S Wood
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, MD, USA
| | - P L Hyland
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, MD, USA
| | - P Caron
- Pharmacogenomics Laboratory, Centre Hospitalier de l'Université Laval de Québec (CHU de Québec) Research Center and Faculty of Pharmacy, Laval University, Quebec City, QC, Canada
| | - J Drahos
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, MD, USA
| | - R T Falk
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, MD, USA
| | - R M Pfeiffer
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, MD, USA
| | - S M Dawsey
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, MD, USA
| | - C C Abnet
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, MD, USA
| | - P R Taylor
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, MD, USA
| | - C Guillemette
- Pharmacogenomics Laboratory, Centre Hospitalier de l'Université Laval de Québec (CHU de Québec) Research Center and Faculty of Pharmacy, Laval University, Quebec City, QC, Canada
| | - L J Murray
- Centre for Public Health, School of Medicine, Dentistry and Biomedical Sciences, Queens University Belfast, Belfast, Northern Ireland
| | - L A Anderson
- Centre for Public Health, School of Medicine, Dentistry and Biomedical Sciences, Queens University Belfast, Belfast, Northern Ireland
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Anderson LA, Tavilla A, Brenner H, Luttmann S, Navarro C, Gavin AT, Holleczek B, Johnston BT, Cook MB, Bannon F, Sant M. Survival for oesophageal, stomach and small intestine cancers in Europe 1999-2007: Results from EUROCARE-5. Eur J Cancer 2015; 51:2144-2157. [PMID: 26421818 PMCID: PMC5729902 DOI: 10.1016/j.ejca.2015.07.026] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Revised: 07/09/2015] [Accepted: 07/20/2015] [Indexed: 12/15/2022]
Abstract
BACKGROUND European regional variation in cancer survival was reported in the EUROCARE-4 study for patients diagnosed in 1995-1999. Relative survival (RS) estimates are here updated for patients diagnosed with cancer of the oesophagus, stomach and small intestine from 2000 to 2007. Trends in RS from 1999-2001 to 2005-2007 are presented to monitor and discuss improvements in patient survival in Europe. MATERIALS AND METHODS EUROCARE-5 data from 29 countries (87 cancer registries) were used to investigate 1- and 5-year RS. Using registry-specific life-tables stratified by age, gender and calendar year, age-standardised 'complete analysis' RS estimates by country and region were calculated for Northern, Southern, Eastern and Central Europe, and for Ireland and United Kingdom (UK). Survival trends of patients in periods 1999-2001, 2002-2004 and 2005-2007 were investigated using the 'period' RS approach. We computed the 5-year RS conditional on surviving the first year (5-year conditional survival), as the ratio of age-standardised 5-year RS to 1-year RS. RESULTS Oesophageal cancer 1- and 5-year RS (40% and 12%, respectively) remained poor in Europe. Patient survival was worst in Eastern (8%), Northern (11%) and Southern Europe (10%). Europe-wide, there was a 3% improvement in oesophageal cancer 5-year survival by 2005-2007, with Ireland and the UK (3%), and Central Europe (4%) showing large improvements. Europe-wide, stomach cancer 5-year RS was 25%. Ireland and UK (17%) and Eastern Europe (19%) had the poorest 5-year patient survival. Southern Europe had the best 5-year survival (30%), though only showing an improvement of 2% by 2005-2007. Small intestine cancer 5-year RS for Europe was 48%, with Central Europe having the best (54%), and Ireland and UK the poorest (37%). Five-year patient survival improvement for Europe was 8% by 2005-2007, with Central, Southern and Eastern Europe showing the greatest increases (⩾9%). CONCLUSIONS Survival for these cancer sites, particularly oesophageal cancer, remains poor in Europe with wide variation. Further investigation into the wide variation, including analysis by histology and anatomical sub-site, will yield insights to better monitor and explain the improvements in survival observed over time.
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Affiliation(s)
- L A Anderson
- Centre for Public Health, School of Medicine, Dentistry and Biomedical Science, Queen's University Belfast, Northern Ireland, United Kingdom.
| | - A Tavilla
- National Center of Epidemiology, Italian National Institute of Health, Rome, Italy
| | - H Brenner
- Division of Clinical Epidemiology and Aging Research and Division of Preventive Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany; German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - S Luttmann
- Bremen Cancer Registry, Leibniz-Institute for Prevention Research and Epidemiology - BIPS, Bremen, Germany
| | - C Navarro
- Department of Epidemiology, Murcia Regional Health Council, IMIB-Arrixaca, Murcia, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Spain; Department of Health and Social Sciences, Universidad de Murcia, Murcia, Spain
| | - A T Gavin
- Centre for Public Health, School of Medicine, Dentistry and Biomedical Science, Queen's University Belfast, Northern Ireland, United Kingdom; Northern Ireland Cancer Registry, Queen's University Belfast, Northern Ireland, United Kingdom
| | - B Holleczek
- Saarland Cancer Registry, Präsident Baltz Straße 5, 66119 Saarbrücken, Germany
| | - B T Johnston
- Belfast Health and Social Care Trust, Belfast, Northern Ireland, United Kingdom
| | - M B Cook
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Maryland, USA
| | - F Bannon
- Centre for Public Health, School of Medicine, Dentistry and Biomedical Science, Queen's University Belfast, Northern Ireland, United Kingdom
| | - M Sant
- Analytical Epidemiology and Health Impact Unit, Department of Preventive and Predictive Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori Via Venezian 1, 20133 Milan, Italy
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Wilson JC, O'Rorke MA, Cooper JA, Murray LJ, Hughes CM, Gormley GJ, Anderson LA. Non-steroidal anti-inflammatory drug use and cervical cancer risk: a case-control study using the Clinical Practice Research Datalink. Cancer Epidemiol 2013; 37:897-904. [PMID: 24042024 DOI: 10.1016/j.canep.2013.08.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [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: 06/05/2013] [Revised: 08/20/2013] [Accepted: 08/21/2013] [Indexed: 01/12/2023]
Abstract
PURPOSE Non-steroidal anti-inflammatory drugs (NSAIDs) have many anticarcinogenic properties via the inhibition of cyclooxygenase 2 (COX-2). Only one study, a cohort study examining risk of all cancers, investigated their role in cervical cancer with inconsistent findings between non-aspirin NSAIDs and aspirin. The aim of this study was to further investigate NSAID/aspirin use and cervical cancer risk. METHODS Using the United Kingdom Clinical Practice Research Datalink, 724 women diagnosed with cervical cancer between 1 January, 1995 and December 2010 were compared to 3479 women (without cervical cancer) matched on year of birth and general practice. Conditional logistic regression analysis adjusted for smoking, sexually transmitted infections, HRT and contraceptive use, was used to calculate odds ratios (OR) and 95% confidence intervals (CI) for cervical cancer risk among users of any oral NSAIDs, non-aspirin NSAIDs and aspirin, as assessed from primary care prescribing data. RESULTS Excluding the year prior to diagnosis, there was no association in adjusted analyses between ever vs. never use of an NSAID (OR 0.92, 95% CI 0.77-1.09), non-aspirin NSAID (OR 0.95, 95% CI 0.80-1.13) or low-dose aspirin (OR 1.07, 0.80-1.44) and cervical cancer risk. In analysis of daily defined doses, there was no association with cervical cancer risk comparing the highest users to non-users of NSAIDs (OR 0.98, 95% CI 0.69-1.39) or non-aspirin NSAIDs (OR 1.00, 95% CI 0.70-1.43) or low-dose aspirin (OR 1.04, 95% CI 0.59-1.81). CONCLUSION This large historical cohort study found no evidence of an association between non-aspirin NSAID or aspirin use and cervical cancer risk.
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Affiliation(s)
- J C Wilson
- Cancer Epidemiology and Health Services Research Group, Centre for Public Health, Queen's University Belfast, UK
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Wilson JC, Murray LJ, Hughes CM, Black A, Anderson LA. Non-steroidal anti-inflammatory drug and aspirin use and the risk of head and neck cancer. Br J Cancer 2013; 108:1178-81. [PMID: 23449358 PMCID: PMC3619083 DOI: 10.1038/bjc.2013.73] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Evidence for non-steroidal anti-inflammatory drugs (NSAIDs) preventing head and neck cancer (HNC) is inconclusive; however, there is some suggestion that aspirin may exert a protective effect. METHODS Using data from the United States National Cancer Institute Prostate, Lung, Colorectal and Ovarian Cancer Screening Trial, we examined the association between aspirin and ibuprofen use and HNC. RESULTS Regular aspirin use was associated with a significant 22% reduction in HNC risk. No association was observed with regular ibuprofen use. CONCLUSION Aspirin may have potential as a chemopreventive agent for HNC, but further investigation is warranted.
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Affiliation(s)
- J C Wilson
- School of Medicine Dentistry and Biomedical Sciences, Institute of Clinical Sciences, Queen's University Belfast, Belfast, UK.
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Chang CK, Mulholland HG, Cantwell MM, Anderson LA, Johnston BT, McKnight AJ, Thompson PD, Watson RGP, Murray LJ. Vitamin d receptor gene variants and esophageal adenocarcinoma risk: a population-based case-control study. J Gastrointest Cancer 2013; 43:512-7. [PMID: 21948293 DOI: 10.1007/s12029-011-9322-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
PURPOSE Polymorphisms in the vitamin D receptor (VDR) gene may be of etiological importance in determining cancer risk. The aim of this study was to assess the association between common VDR gene polymorphisms and esophageal adenocarcinoma (EAC) risk in an all-Ireland population-based case-control study. METHODS EAC cases and frequency-matched controls by age and gender recruited between March 2002 and December 2004 throughout Ireland were included. Participants were interviewed, and a blood sample collected for DNA extraction. Twenty-seven single nucleotide polymorphisms in the VDR gene were genotyped using Sequenom or TaqMan assays while the poly(A) microsatellite was genotyped by fluorescent fragment analysis. Unconditional logistic regression was applied to assess the association between VDR polymorphisms and EAC risk. RESULTS A total of 224 cases of EAC and 256 controls were involved in analyses. After adjustment for potential confounders, TT homozygotes at rs2238139 and rs2107301 had significantly reduced risks of EAC compared with CC homozygotes. In contrast, SS alleles of the poly(A) microsatellite had significantly elevated risks of EAC compared with SL/LL alleles. However, following permutation analyses to adjust for multiple comparisons, no significant associations were observed between any VDR gene polymorphism and EAC risk. CONCLUSIONS VDR gene polymorphisms were not significantly associated with EAC development in this Irish population. Confirmation is required from larger studies.
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Gavin AT, Francisci S, Foschi R, Donnelly DW, Lemmens V, Brenner H, Anderson LA. Oesophageal cancer survival in Europe: a EUROCARE-4 study. Cancer Epidemiol 2012; 36:505-12. [PMID: 22910036 DOI: 10.1016/j.canep.2012.07.009] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Revised: 07/18/2012] [Accepted: 07/22/2012] [Indexed: 02/07/2023]
Abstract
Oesophageal cancer survival is poor with variation across Europe. No pan-European studies of survival differences by oesophageal cancer subtype exist. This study investigates rates and trends in oesophageal cancer survival across Europe. Data for primary malignant oesophageal cancer diagnosed in 1995-1999 and followed up to the end of 2003 was obtained from 66 cancer registries in 24 European countries. Relative survival was calculated using the Hakulinen approach. Staging data were available from 19 registries. Survival by region, gender, age, morphology and stage was investigated. Cohort analysis and the period approach were applied to investigate survival trends from 1988 to 2002 for 31 registries in 17 countries. In total 51,499 cases of oesophageal cancer diagnosed 1995-1999 were analysed. Overall, European 1- and 5-year survival rates were 33.4% (95% CI 32.9-33.9%) and 9.8% (95% CI 9.4-10.1%), respectively. Males, older patients and patients with late stage disease had poorer 1- and 5-year relative survival. Patients with squamous cell carcinoma had poorer 1-year relative survival. Regional variation in survival was observed with Central Europe above and Eastern Europe below the European pool. Survival for distant stage disease was similar across Europe while survival rates for localised disease were below the European pool in Eastern and Southern Europe. Improvement in European 1-year relative survival was reported (p=0.016). Oesophageal cancer survival was poor across Europe. Persistent regional variations in 1-year survival point to a need for a high resolution study of diagnostic and treatment practices of oesophageal cancer.
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Affiliation(s)
- A T Gavin
- Northern Ireland Cancer Registry, Queen's University, Belfast, Northern Ireland, United Kingdom
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O'Rorke MA, Ellison MV, Murray LJ, Moran M, James J, Anderson LA. Human papillomavirus related head and neck cancer survival: a systematic review and meta-analysis. Oral Oncol 2012; 48:1191-201. [PMID: 22841677 DOI: 10.1016/j.oraloncology.2012.06.019] [Citation(s) in RCA: 294] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Revised: 06/18/2012] [Accepted: 06/29/2012] [Indexed: 01/22/2023]
Abstract
Human Papillomavirus (HPV) related oropharyngeal squamous cell carcinomas (OPSCCs) are reported to have improved prognosis and survival in comparison to other head and neck squamous cell cancers (HNSCCs). This systematic review and meta-analysis examines survival differences in HPV-positive HNSCC and OPSCC subtypes including tonsillar carcinoma in studies not previously investigated. Four electronic databases were searched from their inception till April 2011. A random effects meta-analysis was used to pool study estimates evaluating disease-specific (death from HNSCC), overall (all-cause mortality), progression-free and disease-free (recurrence free) survival outcomes in HPV-positive vs. HPV-negative HNSCCs. All statistical tests were two-sided. Forty-two studies were included. Patients with HPV-positive HNSCC had a 54% better overall survival compared to HPV-negative patients HR 0.46 (95% CI 0.37-0.57); the pooled HR for tonsillar cancer and OPSCC was 0.50 (95% CI 0.33-0.77) and HR 0.47 (95% CI 0.35-0.62) respectively. The pooled HR for disease specific survival was 0.28 (95% CI 0.19-0.40); similar effect sizes were found irrespective of the adjustment for confounders, HPV detection methods or study location. Both progression-free survival and disease-free survival were significantly improved in HPV-positive HNSCCs. HPV-positive HNSCCs and OPSCCs patients have a significantly lower disease specific mortality and are less likely to experience progression or recurrence of their cancer than HPV-negative patients; findings which have connotations for treatment selection in these patients.
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Affiliation(s)
- M A O'Rorke
- Cancer Epidemiology and Health Services Research Group, Centre for Public Health, Queens University Belfast, Belfast, UK.
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Affiliation(s)
- A Harris
- Department of Pharmacognosy, The School of Pharmacy, University of London, 29-39, Brunswick Square, London, WC1N 1 AX
| | - LA Anderson
- Department of Pharmacognosy, The School of Pharmacy, University of London, 29-39, Brunswick Square, London, WC1N 1 AX
| | - JD Phillipson
- Department of Pharmacognosy, The School of Pharmacy, University of London, 29-39, Brunswick Square, London, WC1N 1 AX
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14
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Affiliation(s)
- L A Anderson
- Department of Pharmacognosy, The School of Pharmacy, University of London, 29-39, Brunswick Square, London, WC1N 1AX
| | - A T Keene
- Department of Pharmacognosy, The School of Pharmacy, University of London, 29-39, Brunswick Square, London, WC1N 1AX
| | - J D Phillipson
- Department of Pharmacognosy, The School of Pharmacy, University of London, 29-39, Brunswick Square, London, WC1N 1AX
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Hay CA, Anderson LA, Roberts MF, Phillipson JD. Enhanced Alkaloid Yields in Cinchona Ledgeriana Root Organ Suspension Cultures Supplemented with L-Tryptophan. J Pharm Pharmacol 2011. [DOI: 10.1111/j.2042-7158.1985.tb14119.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- C A Hay
- Department of Pharmacognosy, The School of Pharmacy, University of London, 29-39 Brunswick Square, London WC1N 1AX
| | - L A Anderson
- Department of Pharmacognosy, The School of Pharmacy, University of London, 29-39 Brunswick Square, London WC1N 1AX
| | - M F Roberts
- Department of Pharmacognosy, The School of Pharmacy, University of London, 29-39 Brunswick Square, London WC1N 1AX
| | - J D Phillipson
- Department of Pharmacognosy, The School of Pharmacy, University of London, 29-39 Brunswick Square, London WC1N 1AX
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Affiliation(s)
- L A Anderson
- Department of Pharmacognosy, The School of Pharmacy, University of London, 29-39 Brunswick Square, London WC1N 1AX
| | - J D Phillipson
- Department of Pharmacognosy, The School of Pharmacy, University of London, 29-39 Brunswick Square, London WC1N 1AX
| | - M F Roberts
- Department of Pharmacognosy, The School of Pharmacy, University of London, 29-39 Brunswick Square, London WC1N 1AX
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Anderson LA, Hay CA, Phillipson JD, Roberts MF. Precursor Feeding of AILANTHUS ALTISSIMA Cell Suspension Cultures with L-Tryptophan. J Pharm Pharmacol 2011. [DOI: 10.1111/j.2042-7158.1986.tb14331.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- L A Anderson
- Dept. of Pharmacognosy, The School of Pharmacy, University of London, 29-39 Brunswick Square, London UK
| | - C A Hay
- Dept. of Pharmacognosy, The School of Pharmacy, University of London, 29-39 Brunswick Square, London UK
| | - J D Phillipson
- Dept. of Pharmacognosy, The School of Pharmacy, University of London, 29-39 Brunswick Square, London UK
| | - M F Roberts
- Dept. of Pharmacognosy, The School of Pharmacy, University of London, 29-39 Brunswick Square, London UK
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18
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Affiliation(s)
- AT Keene
- Department of Pharmacognosy, The School of Pharmacy, University of London, 29-39, Brunswick Square, London, WC1N 1AX
| | - LA Anderson
- Department of Pharmacognosy, The School of Pharmacy, University of London, 29-39, Brunswick Square, London, WC1N 1AX
| | - JD Phillipson
- Department of Pharmacognosy, The School of Pharmacy, University of London, 29-39, Brunswick Square, London, WC1N 1AX
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McGuire L, Bouldin EL, Andresen EM, Anderson LA. Examining modifiable health behaviors, body weight, and use of preventive health services among caregivers and non-caregivers aged 65 years and older in Hawaii, Kansas, and Washington using 2007 BRFSS. J Nutr Health Aging 2010; 14:373-9. [PMID: 20424805 DOI: 10.1007/s12603-010-0083-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
OBJECTIVE To examine the associations among health behaviors, healthy body weight, and use of preventive services of adults 65 years and older using the 2007 Behavioral Risk Factor Surveillance System (BRFSS) as a function of caregiving status. METHODS Participants (N=6,138) residing in the states of Hawaii, Kansas, and Washington completed questions about caregiving. We examined if there were any associations among body weight--having a healthy weight (body mass index 18.5-24.9 kg/m2); modifiable health behaviors--not smoking, consuming < or = 1 alcoholic beverage per day, consuming at least five fruits or vegetables daily, participating in moderate-to-vigorous physical activity during the average week; and using preventive services--receiving an annual influenza immunization, and ever receiving a pneumococcal immunization. RESULTS The two groups did not differ significantly on the modifiable health behaviors of fruit and vegetable consumption, smoking status, or alcohol consumption, or having a healthy weight. Caregivers were significantly more likely to meet physical activity recommendations than non-caregivers (54.1%, 42.0%, respectively, p < 0.001). No significant differences were found between caregivers and non-caregivers on receiving influenza and pneumococcal immunization. CONCLUSIONS Older adults who are caregivers are more likely than other older adults to meet government recommendations for physical activity; however, they have similar patterns of engaging in other health behaviors, including health eating and use of preventive services.
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Affiliation(s)
- L McGuire
- Division of Injury Response, National Center for Injury Prevention and Control, Centers for Disease Control and Prevention, Atlanta, GA 30341-3724, USA.
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Murphy SJ, Wang L, Anderson LA, Steinlauf A, Present DH, Mechanick JI. Withdrawal of corticosteroids in inflammatory bowel disease patients after dependency periods ranging from 2 to 45 years: a proposed method. Aliment Pharmacol Ther 2009; 30:1078-86. [PMID: 19735230 DOI: 10.1111/j.1365-2036.2009.04136.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Even in the biologic era, corticosteroid dependency in IBD patients is common and causes a lot of morbidity, but methods of withdrawal are not well described. AIM To assess the effectiveness of a corticosteroid withdrawal method. METHODS Twelve patients (10 men, 2 women; 6 ulcerative colitis, 6 Crohn's disease), median age 53.5 years (range 29-75) were included. IBD patients with quiescent disease refractory to conventional weaning were transitioned to oral dexamethasone, educated about symptoms of the corticosteroid withdrawal syndrome (CWS) and weaned under the supervision of an endocrinologist. When patients failed to wean despite a slow weaning pace and their IBD remaining quiescent, low dose synthetic ACTH stimulation testing was performed to assess for adrenal insufficiency. Multivariate analysis was performed to assess predictors of a slow wean. RESULTS Median durations for disease and corticosteroid dependency were 21 (range 3-45) and 14 (range 2-45) years respectively. Ten patients (83%) were successfully weaned after a median follow-up from final wean of 38 months (range 5-73). Disease flares occurred in two patients, CWS in five and ACTH testing was performed in 10. Multivariate analysis showed that longer duration of corticosteroid use appeared to be associated with a slower wean (P = 0.056). CONCLUSIONS Corticosteroid withdrawal using this protocol had a high success rate and durable effect and was effective in patients with long-standing (up to 45 years) dependency. As symptoms of CWS mimic symptoms of IBD disease flares, gastroenterologists may have difficulty distinguishing them, which may be a contributory factor to the frequency of corticosteroid dependency in IBD patients.
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Affiliation(s)
- S J Murphy
- Centre for Colorectal disease, St. Vincent's University Hospital, Dublin, Ireland.
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Donnelly M, Anderson LA, Johnston BT, Watson RGP, Murphy SJ, Comber H, McGuigan J, Reynolds JV, Murray LJ. Oesophageal cancer: caregiver mental health and strain. Psychooncology 2009; 17:1196-201. [PMID: 18470954 DOI: 10.1002/pon.1337] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
OBJECTIVE To investigate strain and mental health among family caregivers of oesophageal cancer patients and possible factors associated with caregiver mental health and strain. METHODS Patients with oesophageal adenocarcinoma in Ireland were recruited into the FINBAR study (the main aim of which was to investigate factors influencing the Barrett's adenocarcinoma relationship). Carers completed the 13-item Caregiver Strain Index and the General Health Questionnaire-30 (GHQ) in the context of a brief interview with trained research staff that was undertaken separately from the interview with each cancer patient. RESULTS Two hundred and twenty-seven patients participated in the FINBAR study. A total of 39 patients did not have a family carer or the carer could not be identified. Fifty percent (94/188) of carers completed the questionnaires. Mean (SD) scores for strain (6.65, SD=3.63) and mental health status (10.21, SD=7.30) were high and 71% of carers scored >5 on the GHQ indicating psychological distress. There was a statistically significant positive relationship between level of strain experienced by caregivers and the severity of their mental health status and whether or not carers scored >5 on the GHQ. Relatives were 1.70 (95% CI 1.34-2.15) times more likely to be defined as high scorers with each unit increase in the CSI score. CONCLUSIONS A significant proportion of caregivers experienced high levels of strain and psychological distress. There is a need to provide appropriate support and services targeted specifically at reducing the considerable strain of caring for patients with oesophageal cancer, particularly for carers of patients from lower socioeconomic groups.
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Affiliation(s)
- M Donnelly
- Centre for Clinical and Population Sciences, Queen's University, Belfast, Northern Ireland.
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Anderson LA, Pfeiffer RM, Landgren O, Gadalla S, Berndt SI, Engels EA. Risks of myeloid malignancies in patients with autoimmune conditions. Br J Cancer 2009; 100:822-8. [PMID: 19259097 PMCID: PMC2653768 DOI: 10.1038/sj.bjc.6604935] [Citation(s) in RCA: 191] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Autoimmune conditions are associated with an elevated risk of lymphoproliferative malignancies, but few studies have investigated the risk of myeloid malignancies. From the US Surveillance Epidemiology and End Results (SEER)-Medicare database, 13 486 myeloid malignancy patients (aged 67+ years) and 160 086 population-based controls were selected. Logistic regression models adjusted for gender, age, race, calendar year and number of physician claims were used to estimate odds ratios (ORs) for myeloid malignancies in relation to autoimmune conditions. Multiple comparisons were controlled for using the Bonferroni correction (P<0.0005). Autoimmune conditions, overall, were associated with an increased risk of acute myeloid leukaemia (AML) (OR 1.29) and myelodysplastic syndrome (MDS, OR 1.50). Specifically, AML was associated with rheumatoid arthritis (OR 1.28), systemic lupus erythematosus (OR 1.92), polymyalgia rheumatica (OR 1.73), autoimmune haemolytic anaemia (OR 3.74), systemic vasculitis (OR 6.23), ulcerative colitis (OR 1.72) and pernicious anaemia (OR 1.57). Myelodysplastic syndrome was associated with rheumatoid arthritis (OR1.52) and pernicious anaemia (OR 2.38). Overall, autoimmune conditions were not associated with chronic myeloid leukaemia (OR 1.09) or chronic myeloproliferative disorders (OR 1.15). Medications used to treat autoimmune conditions, shared genetic predisposition and/or direct infiltration of bone marrow by autoimmune conditions, could explain these excess risks of myeloid malignancies.
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Affiliation(s)
- L A Anderson
- Centre for Public Health, Queen's University Belfast, Northern Ireland, UK.
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Anderson LA, Christianson GB, Linden JF. Mouse auditory cortex differs from visual and somatosensory cortices in the laminar distribution of cytochrome oxidase and acetylcholinesterase. Brain Res 2008; 1252:130-42. [PMID: 19061871 DOI: 10.1016/j.brainres.2008.11.037] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2008] [Revised: 11/06/2008] [Accepted: 11/07/2008] [Indexed: 12/29/2022]
Abstract
Cytochrome oxidase (CYO) and acetylcholinesterase (AChE) staining density varies across the cortical layers in many sensory areas. The laminar variations likely reflect differences between the layers in levels of metabolic activity and cholinergic modulation. The question of whether these laminar variations differ between primary sensory cortices has never been systematically addressed in the same set of animals, since most studies of sensory cortex focus on a single sensory modality. Here, we compared the laminar distribution of CYO and AChE activity in the primary auditory, visual, and somatosensory cortices of the mouse, using Nissl-stained sections to define laminar boundaries. Interestingly, for both CYO and AChE, laminar patterns of enzyme activity were similar in the visual and somatosensory cortices, but differed in the auditory cortex. In the visual and somatosensory areas, staining densities for both enzymes were highest in layers III/IV or IV and in lower layer V. In the auditory cortex, CYO activity showed a reliable peak only at the layer III/IV border, while AChE distribution was relatively homogeneous across layers. These results suggest that laminar patterns of metabolic activity and cholinergic influence are similar in the mouse visual and somatosensory cortices, but differ in the auditory cortex.
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Affiliation(s)
- L A Anderson
- UCL Ear Institute, University College London, 332 Gray's Inn Road, London, WC1X 8EE, UK
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Anderson LA, Murphy SJ, Johnston BT, Watson RGP, Ferguson HR, Bamford KB, Ghazy A, McCarron P, McGuigan J, Reynolds JV, Comber H, Murray LJ. Relationship between Helicobacter pylori infection and gastric atrophy and the stages of the oesophageal inflammation, metaplasia, adenocarcinoma sequence: results from the FINBAR case-control study. Gut 2008; 57:734-9. [PMID: 18025067 DOI: 10.1136/gut.2007.132662] [Citation(s) in RCA: 121] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
OBJECTIVE A number of studies have shown an inverse association between infection with Helicobacter pylori and oesophageal adenocarcinoma (OAC). The mechanism of the apparent protection against OAC by H pylori infection and, in particular, the role of gastric atrophy is disputed. The relationship between all stages of the oesophageal inflammation, metaplasia, adenocarcinoma sequence and H pylori infection and gastric atrophy was explored. METHODS A case-control study involving 260 population controls, 227 OAC, 224 Barrett's oesophagus (BO) and 230 reflux oesophagitis (RO) patients recruited within Ireland was carried out. H pylori and CagA (cytotoxin-associated gene product A) infection was diagnosed serologically by western blot, and pepsinogen I and II levels were measured by enzyme immunoassay. Gastric atrophy was defined as a pepsinogen I/II ratio of <3. RESULTS H pylori seropositivity was inversely associated with OAC, BO and RO; adjusted ORs (95% CIs), 0.49 (0.31 to 0.76), 0.35 (0.22 to 0.56) and 0.42 (0.27 to 0.65), respectively. Gastric atrophy was uncommon (5.3% of all subjects), but was inversely associated with non-junctional OAC, BO and RO; adjusted ORs (95% CIs), 0.34 (0.10 to 1.24), 0.23 (0.05 to 0.96) and 0.27 (0.08 to 0.88), respectively. Inverse associations between H pylori and the disease states remained in gastric atrophy-negative patients. CONCLUSION H pylori infection and gastric atrophy are associated with a reduced risk of OAC, BO and RO. While use of the pepsinogen I/II ratio as a marker for gastric atrophy has limitations, these data suggest that although gastric atrophy is involved it may not fully explain the inverse associations observed with H pylori infection.
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Affiliation(s)
- L A Anderson
- Centre for Clinical and Population Sciences, Queen's University Belfast, Mulhouse Building, Grosvenor Road, Belfast BT12 6BJ, UK.
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Anderson LA, Gridley G, Engels EA, Morton LM, Cerhan JR, Cozen W, Severson RK, Davis S, Hartge P, Linet MS. Antibiotic use and risk of non-Hodgkin's lymphoma: a population-based case-control study. Br J Cancer 2008; 98:161-4. [PMID: 18059393 PMCID: PMC2359683 DOI: 10.1038/sj.bjc.6604127] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2007] [Revised: 11/09/2007] [Accepted: 11/12/2007] [Indexed: 12/03/2022] Open
Abstract
Antibiotic use in 759 non-Hodgkin's lymphoma (NHL) patients and 589 controls was compared. Neither total antibiotic use (odds ratio=0.7, 95% confidence interval=0.5-1.2), nor antibiotic use by site, was associated with total NHL, or NHL subtypes. There were no trends with frequency or age at first use (P trend=0.23 and 0.26, respectively).
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Affiliation(s)
- L A Anderson
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD 20892, USA.
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Affiliation(s)
- H S Cormack
- Ophthalmic Surgeon, General Hospital, Rangoon, and Lecturer in Ophthalmology, University of Rangoon
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Anderson LA, Wallace MN, Palmer AR. Identification of subdivisions in the medial geniculate body of the guinea pig. Hear Res 2007; 228:156-67. [PMID: 17399924 DOI: 10.1016/j.heares.2007.02.005] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2006] [Revised: 02/07/2007] [Accepted: 02/09/2007] [Indexed: 11/17/2022]
Abstract
The accurate and reliable identification of subdivisions within the auditory thalamus is important for future studies of this nucleus. However, in the guinea pig, there has been no agreement on the number or nomenclature of subdivisions within the main nucleus of the auditory thalamus, the medial geniculate body (MGB). Thus, we assessed three staining methods in the guinea pig MGB and concluded that cytochrome oxidase (CYO) histochemistry provides a clear and reliable method for defining MGB subdivisions. By combining CYO with acetylcholinesterase staining and extensive physiological mapping we defined five separate divisions, all of which respond to auditory stimuli. Coronal sections stained for CYO revealed a moderate to darkly-stained oval core. This area (the ventral MGB) contained a high proportion (61%) of V-shaped tuning curves and a tonotopic organisation of characteristic frequencies. It was surrounded by four smaller areas that contained darkly stained somata but had a paler neuropil. These areas, the dorsolateral and suprageniculate (which together form the dorsal MGB), the medial MGB and the shell MGB, did not have any discernable tonotopic frequency gradient and contained a smaller proportion of V-shaped tuning curves. This suggests that CYO permits the identification of core and belt areas within the guinea pig MGB.
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Affiliation(s)
- L A Anderson
- MRC Institute of Hearing Research, University Park, Nottingham NG7 2RD, UK.
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Anderson LA, McMillan SA, Watson RGP, Monaghan P, Gavin AT, Fox C, Murray LJ. Malignancy and mortality in a population-based cohort of patients with coeliac disease or ‘gluten sensitivity’. World J Gastroenterol 2007; 13:146-51. [PMID: 17206762 PMCID: PMC4065872 DOI: 10.3748/wjg.v13.i1.146] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To determine the risk of malignancy and mortality in patients with a positive endomysial or anti-gliadin antibody test in Northern Ireland.
METHODS: A population-based retrospective cohort study design was used. Laboratory test results used in the diagnosis of coeliac disease were obtained from the Regional Immunology Laboratory, cancer statistics from the Northern Ireland Cancer Registry and mortality statistics from the General Registrar Office, Northern Ireland. Age standardized incidence ratios of malignant neoplasms and standardized mortality ratios of all-cause and cause-specific mortality were calculated.
RESULTS: A total of 13 338 people had an endomysial antibody and/or an anti-gliadin antibody test in Northern Ireland between 1993 and 1996. There were 490 patients who tested positive for endomysial antibodies and they were assumed to have coeliac disease. There were 1133 patients who tested positive for anti-gliadin antibodies and they were defined as gluten sensitive. Malignant neoplasms were not significantly associated with coeliac disease; however, all-cause mortality was significantly increased following diagnosis. The standardized incidence and mortality ratios for non-Hodgkin’s lymphoma were increased in coeliac disease patients but did not reach statistical significance. Lung and breast cancer incidence were significantly lower and all-cause mortality, mortality from malignant neoplasms, non-Hodgkin’s lymphoma and digestive system disorders were significantly higher in gluten sensitive patients compared to the Northern Ireland population.
CONCLUSION: Patients with coeliac disease or gluten sensitivity had higher mortality rates than the Northern Ireland population. This association persists more than one year after diagnosis in patients testing positive for anti-gliadin antibodies. Breast cancer is significantly reduced in the cohort of patients with gluten sensitivity.
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Affiliation(s)
- L A Anderson
- Centre for Clinical and Population Sciences, Mulhouse Building, Grosvenor Road, Belfast, BT12 6BJ, United Kingdom,
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Bosch J, Robien MA, Mehlin C, Boni E, Riechers A, Buckner FS, Van Voorhis WC, Myler PJ, Worthey EA, DeTitta G, Luft JR, Lauricella A, Gulde S, Anderson LA, Kalyuzhniy O, Neely HM, Ross J, Earnest TN, Soltis M, Schoenfeld L, Zucker F, Merritt EA, Fan E, Verlinde CLMJ, Hol WGJ. Using fragment cocktail crystallography to assist inhibitor design of Trypanosoma brucei nucleoside 2-deoxyribosyltransferase. J Med Chem 2006; 49:5939-46. [PMID: 17004709 DOI: 10.1021/jm060429m] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The 1.8 A resolution de novo structure of nucleoside 2-deoxyribosyltransferase (EC 2.4.2.6) from Trypanosoma brucei (TbNDRT) has been determined by SADa phasing in an unliganded state and several ligand-bound states. This enzyme is important in the salvage pathway of nucleoside recycling. To identify novel lead compounds, we exploited "fragment cocktail soaks". Out of 304 compounds tried in 31 cocktails, four compounds could be identified crystallographically in the active site. In addition, we demonstrated that very short soaks of approximately 10 s are sufficient even for rather hydrophobic ligands to bind in the active site groove, which is promising for the application of similar soaking experiments to less robust crystals of other proteins.
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Affiliation(s)
- Jürgen Bosch
- Department of Biochemistry, Division of Infectious Disease, and Howard Hughes Medical Institute, University of Washington, Seattle, Washington 98195, USA
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Anderson LA, Malmierca MS, Wallace MN, Palmer AR. Evidence for a direct, short latency projection from the dorsal cochlear nucleus to the auditory thalamus in the guinea pig. Eur J Neurosci 2006; 24:491-8. [PMID: 16836634 DOI: 10.1111/j.1460-9568.2006.04930.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.9] [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: 11/30/2022]
Abstract
The auditory thalamus (medial geniculate body, MGB) receives its main ascending input from the inferior colliculus (IC), which was considered to be an obligatory relay for all auditory inputs to the MGB. However, recent anatomical evidence in the rat [ (Malmierca et al. 2002) J. Neurosci., 22, 10891-10897] has confirmed the presence of a direct pathway from the dorsal cochlear nucleus (DCN) to the medial MGB, bypassing the IC, as previously suggested in the chimpanzee [ (Strominger et al. 1977) J. Comp. Neurol., 172, 349-366]. We show that this direct pathway is also present in the guinea pig and apparently results in short latency responses in the thalamus. Injection of anterograde tracer into the DCN of five adult guinea pigs revealed terminal boutons and axonal swellings distributed throughout the medial MGB, but absent from all other MGB subdivisions. Electrophysiological recordings made from 39 adult guinea pigs (24 male & 15 female) showed neurons in the medial MGB responded with significantly shorter latencies to acoustic clicks (7.8 ms) than those from the ventral (11.0 ms), dorsal (14.4 ms), or shell (16.5 ms) MGB, consistent with the direct pathway from the DCN. The function of the direct pathway is not known but may be related to the fast responses and the role of the medial MGB in integrating combined somatosensory and auditory inputs. Short latency responses may be important in priming the auditory cortex to prepare it for rapid analysis and in recruiting the amygdala for rapid emotional responses such as fear.
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Affiliation(s)
- L A Anderson
- MRC Institute of Hearing Research, University Park, Nottingham, NG7 2RD, UK.
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Abstract
BACKGROUND Patients with Barrett's oesophagus have an increased risk of oesophageal adenocarcinoma but this cancer only accounts for a small proportion of deaths in these patients. Other causes of death are reportedly raised in this group. We examined cause specific mortality among individuals in a population based Barrett's oesophagus register. METHODS We constructed a register of all patients diagnosed with columnar mucosa (including specialised intestinal metaplasia) of the oesophagus within Northern Ireland between 1993 and 1999. Deaths occurring within this cohort until 31 December 2000 were identified and mortality rates were compared with the general population. RESULTS Overall mortality was not raised in Barrett's patients. During 7413 person years of follow up in 2373 patients there were 253 deaths (standardised mortality ratio (SMR) 96 (95% confidence interval (CI) 84-107)). Mortality from oesophageal cancer was raised in patients with specialised intestinal metaplasia (SMR 774 (95% CI 317-1231)) but only 4.7% of patients died from this cancer. Mortality from stroke (SMR 65 (95% CI 37-93)) was significantly lower than the general population while mortality from non-cancerous digestive system diseases was significantly higher (SMR 211 (95% CI 111-311)). Mortality rates from all other causes were similar to those of the general population. CONCLUSIONS This study demonstrates that the overall mortality rate in patients with Barrett's oesophagus is closely similar to that of the general population. Oesophageal cancer mortality was raised but is an uncommon cause of death in these patients who also appear to have a reduced risk of death from stroke.
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Affiliation(s)
- L A Anderson
- Northern Ireland Cancer Registry, Department of Epidemiology and Public Health, The Queen's University Belfast, UK.
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Palin SL, McTernan PG, Anderson LA, Sturdee DW, Barnett AH, Kumar S. 17Beta-estradiol and anti-estrogen ICI:compound 182,780 regulate expression of lipoprotein lipase and hormone-sensitive lipase in isolated subcutaneous abdominal adipocytes. Metabolism 2003; 52:383-8. [PMID: 12701046 DOI: 10.1053/meta.2003.50088] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
We sought to investigate the influence of 17beta-estradiol (E(2)) on key enzymes of lipogenesis and lipolysis in subcutaneous (SC) abdominal adipocytes isolated from women. In addition, we wished to determine the influence of an anti-estrogen, ICI:compound 182,780 (anti-E), known to act via the estrogen receptor (ER), alone and in combination with E(2). Adipose tissue was obtained from 17 women undergoing elective surgery, with a mean age of 47 years (range, 34 to 62), mean weight of 65.4 kg (range, 58.1 to 75.0), and mean body mass index (BMI) of 25 kg/m(2) (range, 22 to 27). Isolated adipocytes were treated with varying doses of E(2), anti-E, or E(2) in combination with anti-E 10(-8) mol/L for 48 hours. Following treatment, proteins were extracted and the effects on lipogenesis and lipolysis were assessed, using Western blotting to determine the relative expression of the key enzymes of these processes, lipoprotein lipase (LPL; 56 kd), and hormone-sensitive lipase (HSL; 84 kd), respectively. Glycerol release into the medium was also measured as an index of lipolytic activity. The protein expression studies demonstrated that E(2) altered expression of LPL relative to control, with the highest dose significantly reducing LPL expression and the lower doses significantly increasing LPL expression (mean protein expression relative to control +/- SE): E(2) 10(-12) mol/L, 1.79 +/- 0.16 (P <.001); E(2) 10(-7) mol/L, 0.56 +/- 0.08 (P <.05). In contrast, HSL expression was increased relative to control at the higher doses of E(2) but was not significantly altered relative to control at the lower doses: E(2) 10(-12) mol/L, 1.02 +/- 0.14 (P >.05); E(2) 10(-7) mol/L, 1.55 +/- 0.17 (P <.01). Anti-E 10(-8) mol/L alone reduced LPL protein expression relative to control (P <.05) and increased HSL protein expression relative to control (P >.05). In combination with E(2) 10(-7) mol/L, anti-E 10(-8) mol/L did not abrogate the inhibitory effect on LPL expression relative to control (P <.05). Furthermore, E(2) 10(-7) mol/Lin combination with anti-E 10(-8) mol/L, displayed a stimulatory effect on HSL expression relative to control (P <.01). Glycerol release studies following the higher doses of E(2), and also following E(2) 10(-7) mol/L in combination with anti-E 10(-8) mol/L, provided support for the HSL protein expression studies. We conclude that the highest concentration of E(2) (10(-7) mol/L) significantly reduced LPL expression relative to control, while the lower concentrations significantly increased LPL expression relative to control. The highest concentration of E(2) also significantly increased both HSL expression and glycerol release relative to control. The effects of anti-E suggest that the in vitro effects of E(2) on lipogenesis and lipolysis occur, at least in part, through a receptor-mediated pathway. In addition, as recently observed in other tissues, ICI:compound 182,780 does not appear to behave as a pure anti-estrogen in isolated human adipocytes.
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Affiliation(s)
- S L Palin
- Division of Medical Sciences, University of Birmingham, Edgbastone, Birmingham, UK
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Abstract
Clinical observations suggest a role for testosterone in the accumulation of central adiposity and with an associated increased risk of disease. To date, no human study has analysed the role of dihydrotestosterone (DHT) on adipose tissue mass regulation in vitro. This study investigated the role of DHT and androgen receptors (AR) in the regulation of lipolysis and lipogenesis by examining the key enzymes hormone sensitive lipase (HSL) and lipoprotein lipase (LPL) respectively. Isolated abdominal subcutaneous adipocytes (Scad) (n = 15) were treated with either DHT (10(-7)-10(-9) m), an antiandrogen, flutamide (FLT: 10(-7)-10(-9) m) or a combination of DHT (10(-7)-10(-9) m) with FLT (10(-8) m). Relative protein expression of HSL, LPL and AR was determined. In Scad, DHT inhibited HSL expression maximally at 10(-9) m (0.7 +/- 0.4**; p < 0.01**) compared with control (control: 1.0 +/- (s.e.m.) 0.0), whereas LPL protein expression was stimulated at DHT10(-9) m (2.22 +/- 0.48*; p < 0.05*). Glycerol release assay results correlated with HSL expression data. LPL expression was reduced at all doses with combinations of DHT + FLT compared with DHT alone. Androgen receptor expression studies showed an inverse correlation with DHT, whereas DHT + FLT reduced AR expression. These studies indicate that DHT may alter HSL and LPL expression, whereas only LPL expression appears mediated by AR. These findings suggest a physiological role for DHT in the control of adipose tissue mass in women, and indicate that androgens may also play an important role in regulating lipid metabolism.
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Affiliation(s)
- L A Anderson
- Department of Medicine, University of Birmingham, Division of Medical Sciences, Edgbaston, Birmingham, UK
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Kim RH, Flanders KC, Birkey Reffey S, Anderson LA, Duckett CS, Perkins ND, Roberts AB. SNIP1 inhibits NF-kappa B signaling by competing for its binding to the C/H1 domain of CBP/p300 transcriptional co-activators. J Biol Chem 2001; 276:46297-304. [PMID: 11567019 DOI: 10.1074/jbc.m103819200] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
SNIP1 is a 396-amino acid nuclear protein shown to be an inhibitor of the TGF-beta signal transduction pathway and to be important in suppressing transcriptional activation dependent on the co-activators CBP and p300. In this report we show that SNIP1 potently inhibits the activity of NF-kappa B, which binds the C/H1 domain of CBP/p300, but does not interfere with the activity of transcription factors such as p53, which bind to other domains of p300, or factors such as VP16, which are independent of these co-activators. Inhibition of NF-kappa B activity is a function of the N-terminal domain of SNIP1 and involves competition of SNIP1 and the NF-kappa B subunit, RelA/p65, for binding to p300, similar to the mechanism of inhibition of Smad signaling by SNIP1. Immunohistochemical staining shows that expression of SNIP1 is strictly regulated in development and that it colocalizes, in certain tissues, with nuclear staining for RelA/p65 and for p300, suggesting that they may regulate NF-kappa B activity in vivo in a spatially and temporally controlled manner. These data led us to suggest that SNIP1 may be an inhibitor of multiple transcriptional pathways that require the C/H1 domain of CBP/p300.
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Affiliation(s)
- R H Kim
- Laboratory of Cell Regulation and Carcinogenesis, National Cancer Institute, Bethesda, Maryland 20892-5055, USA
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Ainsworth BE, Anderson LA, Becker DM, Blalock SJ, Brown DR, Brownson RC, Brownstein N, Cornell CE, Devellis BM, Finnegan LP, Folger S, Fulton JE, Groff JY, Herman C, Jones D, Keyserling TC, Matson Koffman D, Lewis C, Mâsse LC, McKeown RE, Orenstein D, Spadaro AJ. Observations from the CDC. Community Prevention Study: contributions to women's health and prevention research. J Womens Health Gend Based Med 2001; 10:913-20. [PMID: 11788102 DOI: 10.1089/152460901317193495] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- B E Ainsworth
- University of South Carolina, Columbia, South Carolina, USA
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Anderson LA. Reality research: project time management and recruitment. J Vasc Nurs 2001; 19:137-8. [PMID: 11734800 DOI: 10.1067/mvn.2001.119943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- L A Anderson
- Patient Care Resource Manager, Ohio State University Medical Center, Columbus, USA
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Barnes J, Anderson LA, Phillipson JD. St John's wort (Hypericum perforatum L.): a review of its chemistry, pharmacology and clinical properties. J Pharm Pharmacol 2001; 53:583-600. [PMID: 11370698 DOI: 10.1211/0022357011775910] [Citation(s) in RCA: 409] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
The chemical composition of St. John's wort has been well-studied. Documented pharmacological activities, including antidepressant, antiviral, and antibacterial effects, provide supporting evidence for several of the traditional uses stated for St John's wort. Many pharmacological activities appear to be attributable to hypericin and to the flavonoid constituents; hypericin is also reported to be responsible for the photosensitive reactions that have been documented for St. John's wort. With regard to the antidepressant effects of St John's wort, hyperforin, rather than hypericin as originally thought, has emerged as one of the major constituents responsible for antidepressant activity. Further research is required to determine which other constituents contribute to the antidepressant effect. Evidence from randomised controlled trials has confirmed the efficacy of St John's wort extracts over placebo in the treatment of mild-to-moderately severe depression. Other randomised controlled studies have provided some evidence that St John's wort extracts are as effective as some standard antidepressants in mild-to-moderate depression. There is still a need for further trials to assess the efficacy of St John's wort extracts, compared with that of standard antidepressants, particularly newer antidepressant agents, such as the selective serotonin reuptake inhibitors (recent comparative studies with fluoxetine and sertraline have been conducted). Also, there is a need for further studies in well-defined groups of patients, in different types of depression, and conducted over longer periods in order to determine long-term safety. St John's wort does appear to have a more favourable short-term safety profile than do standard antidepressants, a factor that is likely to be important in patients continuing to take medication. Concerns have been raised over interactions between St John's wort and certain prescribed medicines (including warfarin, ciclosporin, theophylline, digoxin, HIV protease inhibitors, anticonvulsants, selective serotonin reuptake inhibitors, triptans, oral contraceptives); advice is that patients taking these medicines should stop taking St John's wort, generally after seeking professional advice as dose adjustment of conventional treatment may be necessary.
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Affiliation(s)
- J Barnes
- Centre for Pharmacognosy & Phytotherapy, School of Pharmacy, University of London
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Anderson LA, McTernan PG, Barnett AH, Kumar S. The effects of androgens and estrogens on preadipocyte proliferation in human adipose tissue: influence of gender and site. J Clin Endocrinol Metab 2001; 86:5045-51. [PMID: 11600583 DOI: 10.1210/jcem.86.10.7955] [Citation(s) in RCA: 103] [Impact Index Per Article: 4.5] [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: 02/04/2023]
Abstract
The gender-specific differences in body fat distribution suggest that sex steroids play an important role in regulating body fat distribution. Sex steroids may regulate adipose tissue mass by altering adipocyte number and size. The effects of various sex steroids on in vitro proliferation of preadipocytes from both sc and omental fat depots was investigated in men and women. Abdominal sc and omental preadipocytes from men (n = 14) and women (8 premenopausal and 7 postmenopausal) were cultured in the presence of 17beta-E2 (10(-7)-10(-9) M), estrone (10(-7)-10(-9) M), or dehydrotestosterone (DHT) (10(-7)-10(-9) M), and the rate of proliferation was measured over time (1-96 h) by DNA accumulation assays (micromoles per microg) and [(3)H]thymidine incorporation (disintegrations per min). In sc preadipocytes the rate of proliferation was increased between 24-48 h with E2 (10(-7) M) in both men (P = 0.028) and women (P = 0.017). Subcutaneous preadipocytes from women were more responsive to E2 in stimulating proliferation than those from men (women vs. men, DNA assay, 24 h, P = 0.014). In omental preadipocytes the increase in the rate of proliferation occurred at 24 h with E2 (10(-7) M) in women (P = 0.034) and at 48 h in men (P = 0.031). Gender appeared to influence the rate of proliferation by E2 in omental preadipocytes, with maximal stimulation of proliferation at 48 h in preadipocytes from women treated with E2 (10(-7) M; p = 0.007) compared with 72 h in preadipocyte cells from men (P = 0.048), as shown by DNA assay. Both estrone and the androgen DHT had no significant gender- or site-specific effect on the rate of proliferation at any time point. All DNA content data were further validated by thymidine incorporation analysis. In summary, E2 stimulates the rate of proliferation of preadipocytes in a dose-dependent manner, with significant gender- and site-specific differences. Neither estrone nor DHT affected adipocyte mass through proliferation of preadipocytes in this study. In conclusion, E2 may act as an important local factor influencing the proliferation of preadipocytes that may affect fat cell number in a depot- and gender-specific pattern in human abdominal sc and omental adipose tissue.
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Affiliation(s)
- L A Anderson
- Division of Medical Sciences, Department of Medicine, Queen Elizabeth Hospital, University of Birmingham, Birmingham, United Kingdom B15 2TH
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Anwar A, McTernan PG, Anderson LA, Askaa J, Moody CG, Barnett AH, Eggo MC, Kumar S. Site-specific regulation of oestrogen receptor-alpha and -beta by oestradiol in human adipose tissue. Diabetes Obes Metab 2001; 3:338-49. [PMID: 11703424 DOI: 10.1046/j.1463-1326.2001.00145.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AIM To examine the expression of oestrogen receptors alpha and beta (ERalpha and ERbeta) and their regulation by 17beta-oestradiol (E2) in stromal cells and adipocytes from human subcutaneous (s.c.) and omental (o.m.) adipose tissue. METHODS Subcutaneous and o.m. abdominal adipose tissues were obtained from 10 women (mean age 63.5 +/- 4.8 years; mean weight 75.6 +/- 6.7 kg) undergoing elective or cosmetic surgery. Immunohistochemistry and RT-PCR analysis were used to detect the presence of ERalpha and ERbeta. The regulation of ERalpha and ERbeta by E(2) (10(-7) M to 10(-9) M) was examined using Western immunoblotting analysis in both s.c. and o.m. stromal cells and mature adipocytes cultured in serum-free, phenol red-free medium. RESULTS Immunostaining of s.c. and o.m. adipose tissue showed that the ER subtypes were localized predominantly within the nucleus. Western analysis demonstrated that E2 treatments differentially altered ERalpha and ERbeta expression in s.c. and o.m. adipocytes. In s.c. and o.m. stromal cells, E(2) (10(-8) M) produced a significant up regulation relative to control of 66 kDa ERalpha (s.c.:1.87 +/- 0.22; o.m.:1.97 +/- 0.17; p < 0.05) and 60 kDa ERbeta (s.c.:1.66 +/- 0.3; o.m.: 1.68 +/- 0.16; p < 0.05). In s.c. adipocytes, however, ERalpha expression significantly decreased with E(2) 10(-8) M relative to control while ERbeta expression increased (ERalpha 0.58 +/- 0.06, ERbeta: 1.47 +/- 0.11; p < 0.05). In o.m. adipocytes, the inhibition of ERalpha with E(2) was not observed (ERalpha 1.86 +/- 0.36, ERbeta:1.03 +/- 0.15, p < 0.05) CONCLUSIONS ERalpha and ERbeta are expressed but differentially regulated by E(2) in s.c. and o.m. adipocytes and stromal cells. The upregulation of ERbeta by E(2) suggests that E(2) maintains the expression of these receptors. The feed-back inhibition of ERalpha expression by E(2) in s.c. but not o.m. adipocytes observed in vitro is consistent with the data from ERalpha knock out mice where s.c. fat is increased. Selective ER modulators may have different effects in different adipose sites.
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Affiliation(s)
- A Anwar
- Department of Medicine, University of Birmingham, Queen Elizabeth Hospital, Edgbaston, Birmingham, B15 2TH, UK
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Abstract
OBJECTIVE Effectively communicating information about the complex decisions that face women at midlife, including whether to use hormone replacement therapy (HRT), is an ongoing challenge. Although numerous decision-making tools exist, few have been evaluated. The objective of this study was to examine women's use of a workbook designed to promote informed HRT decision-making. DESIGN We developed a workbook to prepare women to discuss HRT, osteoporosis, heart disease, and breast cancer with their providers. To evaluate the workbook, women aged 45-65 years were randomly assigned to one of three groups: (1) workbook plus baseline and 6-month surveys, (2) workbook and 6-month survey, or (3) no workbook with both surveys. Results are based on the responses of 580 women in groups 1 and 2 (response rate, 84.2%). RESULTS At 6 months, 79% of women recalled receiving the workbook, of whom 51% read all or most of it, 35% skimmed or read part of it, and 14% did not read it. The percentages of women completing self-assessments were 55% osteoporosis; 56% heart disease; 58% breast cancer; 57% advantages and disadvantages of HRT; and 52% personal preferences about HRT. As a result of the workbook, 10% made an appointment with their providers, and 12% had a discussion about HRT with their providers. Use of the workbook was not associated with menopause symptoms, attitudes about or use of HRT, hysterectomy, or provider discussions about menopause and HRT. CONCLUSION This simple approach of using a mailed workbook holds promise as a successful mechanism to prepare women to discuss HRT and other related health issues with their providers.
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Affiliation(s)
- K M Newton
- Center for Health Studies, Group Health Cooperative, Seattle, Washington 98101, USA.
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Abstract
OBJECTIVES The purpose of this study was to compare hormone replacement therapy (HRT) prescribing frequency to provider characteristics, attitudes and beliefs about menopause and HRT. METHODS There was a mailed survey of providers at a large staff-model HMO in Washington state. Participants included 250 family practice physicians, 22 gynecologists, and 13 women's health care specialists and nurse midwives (83% response rate). The primary outcome, "HRT prescribing frequency" (derived from automated pharmacy and visit data) was defined as: the total number of estrogen prescriptions written by the provider and filled by women aged 50-80 years during the 12 months prior to the survey, divided by the number of visits made to the provider by women aged 50-80 years during that same 12-month period. Covariates included provider characteristics and beliefs about menopause and HRT. Logistic regression was used to distinguish providers in the upper 40% versus the lower 60% of HRT prescribing frequency. RESULTS Controlling for age and practice type, HRT prescribing frequency was lower among men than women providers (odds ratio [OR] 0.38, 95% confidence interval [CI] 0.21-0.65), higher among providers who agreed (vs. disagreed or neutral) that a convincing scientific case has been made that HRT prevents heart disease (OR 2.66, 95% CI 1.53-4.61), and higher among those in the upper tertile vs. lower tertiles of an HRT encouragement scale (OR 2.50, 95% CI 1.29-4.85). CONCLUSIONS Female providers and providers with positive attitudes toward HRT are the most likely to prescribe it.
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Affiliation(s)
- K M Newton
- Center for Health Studies, Group Health Cooperative, 1730 Minor Ave. Suite 1600, Seattle, WA 98101, USA.
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Abstract
Abdominal aortic aneurysm is a chronic dilation of the aorta with a natural history toward enlargement and rupture. Its pathogenesis is believed to be multifactorial and complex. Clinical presentation may be asymptomatic, symptomatic, or as rupture. Elective surgery by open transperitoneal or retroperitoneal approach is the most common repair intervention. However, placing an endoluminal stent graft within the aneurysm is currently being evaluated as an alternative to open repair. Nursing care of the patient with abdominal aortic aneurysm involves intensive care skills as well as a foundation in chronic illness management. This article presents information on pathogenesis, natural history, clinical presentation, surgical interventions, and postoperative complications.
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Affiliation(s)
- L A Anderson
- Division of Vascular Surgery, The Ohio State University Medical Center, Columbus, USA
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Gourley DG, Schuttelkopf AW, Anderson LA, Price NC, Boxer DH, Hunter WN. Oxyanion binding alters conformation and quaternary structure of the c-terminal domain of the transcriptional regulator mode. Implications for molybdate-dependent regulation, signaling, storage, and transport. J Biol Chem 2001; 276:20641-7. [PMID: 11259434 DOI: 10.1074/jbc.m100919200] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The molybdate-dependent transcriptional regulator ModE of Escherichia coli functions as a sensor of intracellular molybdate concentration and a regulator for the transcription of several operons that control the uptake and utilization of molybdenum. We present two high-resolution crystal structures of the C-terminal oxyanion-binding domain in complex with molybdate and tungstate. The ligands bind between subunits at the dimerization interface, and analysis reveals that oxyanion selectivity is determined primarily by size. The relevance of the structures is indicated by fluorescence measurements, which show that the oxyanion binding properties of the C-terminal domain of ModE are similar to those of the full-length protein. Comparisons with the apoprotein structure have identified structural rearrangements that occur on binding oxyanion. This molybdate-dependent conformational switch promotes a change in shape and alterations to the surface of the protein and may provide the signal for recruitment of other proteins to construct the machinery for transcription. Sequence and structure-based comparisons lead to a classification of molybdate-binding proteins.
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Affiliation(s)
- D G Gourley
- Wellcome Trust Biocentre, University of Dundee, Dundee, DD1 5EH, United Kingdom
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Rein DB, Anderson LA, Gowda VR, Dixon J, Irwin KL. Federally funded sexually transmitted disease programs and managed care: a review of current and planned partnerships. Sex Transm Dis 2001; 28:336-42. [PMID: 11403191 DOI: 10.1097/00007435-200106000-00006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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: 11/25/2022]
Abstract
BACKGROUND The Centers for Disease Control and Prevention requested that sexually transmitted disease (STD) programs report their current activities and plans to collaborate with managed care organizations in their 1999 applications for federal funding. GOAL To review CDC STD program applications for funding to assess the number of activities between STD programs and managed care organizations. METHODS Narrative data on managed care topics were abstracted from 59 funding applications (50 states, 7 cites or counties, and 2 US territories), using standard qualitative methods. A coding system was applied to categorize each managed care activity into one of nine categories (interrater reliability, 93%). An expert panel ranked activities by complexity, and these scores were used to develop an overall complexity score for each program. RESULTS All but 9 of the 59 applicants reported managed care organization activities. Altogether, 208 activities were specifically documented, 45% of which were classified as operational in 1999. The most frequently reported activities involved gathering and giving information and promoting STD care through legislation and state Medicaid activities. CONCLUSIONS Considerable information transfer and policy action between STD programs and managed care organizations are taking place. Further integration of services and policies should be studied and encouraged to promote the effective treatment of STD.
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Affiliation(s)
- D B Rein
- Division of Sexually Transmitted Disease Prevention (DSTDP), Centers for Disease Control and Prevention, Atlanta, Georgia, USA.
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Abstract
Control of Trichinella infection in swine has traditionally been accomplished by inspection of individual carcasses or by post-slaughter processing to inactivate parasites. Recent declines in prevalence of this parasite in domestic swine, coupled with improvements in swine management systems, offer the opportunity to document pork safety during the production phase. We report here on a certification pilot study using an audit to document good production practices for swine relative to the risk of exposure to trichinae. Based on the results, improvements in the program have been made and further studies will be undertaken prior to launching a voluntary trichinae herd certification program in the United States.
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Anderson LA, Gonen JS, Irwin K. Protecting women's health. Bus Health 2001; 19:47. [PMID: 11276996] [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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Daumit G, Boulware LE, Powe NR, Minkovitz CS, Frick KD, Anderson LA, Janes GR, Lawrence RS. A computerized tool for evaluating the effectiveness of preventive interventions. Public Health Rep 2001; 116 Suppl 1:244-53. [PMID: 11889289 PMCID: PMC1913681 DOI: 10.1093/phr/116.s1.244] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
In identifying appropriate strategies for effective use of preventive services for particular settings or populations, public health practitioners employ a systematic approach to evaluating the literature. Behavioral intervention studies that focus on prevention, however, pose special challenges for these traditional methods. Tools for synthesizing evidence on preventive interventions can improve public health practice. The authors developed a literature abstraction tool and a classification for preventive interventions. They incorporated the tool into a PC-based relational database and user-friendly evidence reporting system, then tested the system by reviewing behavioral interventions for hypertension management. They performed a structured literature search and reviewed 100 studies on behavioral interventions for hypertension management. They abstracted information using the abstraction tool and classified important elements of interventions for comparison across studies. The authors found that many studies in their pilot project did not report sufficient information to allow for complete evaluation, comparison across studies, or replication of the intervention. They propose that studies reporting on preventive interventions should (a) categorize interventions into discrete components; (b) report sufficient participant information; and (c) report characteristics such as intervention leaders, timing, and setting so that public health professionals can compare and select the most appropriate interventions.
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Affiliation(s)
- G Daumit
- Johns Hopkins University School of Medicine, Baltimore, USA.
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Abstract
BACKGROUND Counseling women facing the decision to initiate, continue, or discontinue hormone replacement therapy represents a major challenge for providers. Women's attitudes deserve careful consideration in this context, because attitudes may influence hormone replacement therapy use and patients' satisfaction with decision-making. Little is known about factors that may explain different attitudes. METHODS To evaluate the association between char acteristics of peri- and postmenopausal women and their attitudes toward hormone replacement therapy, we conducted a population-based, computer-assisted telephone survey of 1,076 randomly selected women, ages 50-80, at a staff-model health maintenance organization. Women with a positive or neutral attitude were compared to those with a negative attitude. We exam ined associations between attitudes and demographic and clinical characteristics, self-rated health status, physical function, personal and family history of condi tions affected by hormone replacement therapy, gyne cologic visits, provider characteristics, interactions with provider, and sources of information about hor mone replacement therapy. RESULTS The perception of being adequately informed about the benefits of hormone replacement therapy by one's provider was associated with a tripling of the likelihood of having a positive attitude toward hormone replacement therapy. Additional fac tors associated with positive attitudes included past hormone replacement therapy use, younger age, a higher level of physical functioning, and personal history of heart disease. Relationships between these vari ables and attitudes varied among current hormone replacement therapy users and nonusers. CONCLUSIONS The study findings reinforce the critical role of provider counseling in shaping women's atti tudes about hormone replacement therapy.
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Affiliation(s)
- E A Phelan
- Department of Medicine, University of Washington, Seattle, Washington, USA.
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49
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Anderson LA, McNairn E, Lubke T, Pau RN, Boxer DH, Leubke T. ModE-dependent molybdate regulation of the molybdenum cofactor operon moa in Escherichia coli. J Bacteriol 2000; 182:7035-43. [PMID: 11092866 PMCID: PMC94831 DOI: 10.1128/jb.182.24.7035-7043.2000] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The expression of the moa locus, which encodes enzymes required for molybdopterin biosynthesis, is enhanced under anaerobiosis but repressed when the bacterium is able to synthesize active molybdenum cofactor. In addition, moa expression exhibits a strong requirement for molybdate. The molybdate enhancement of moa transcription is fully dependent upon the molybdate-binding protein, ModE, which also mediates molybdate repression of the mod operon encoding the high-affinity molybdate uptake system. Due to the repression of moa in molybdenum cofactor-sufficient strains, the positive molybdate regulation of moa is revealed only in strains unable to make the active cofactor. Transcription of moa is controlled at two sigma-70-type promoters immediately upstream of the moaA gene. Deletion mutations covering the region upstream of moaA have allowed each of the promoters to be studied in isolation. The distal promoter is the site of the anaerobic enhancement which is Fnr-dependent. The molybdate induction of moa is exerted at the proximal promoter. Molybdate-ModE binds adjacent to the -35 region of this promoter, acting as a direct positive regulator of moa. The molybdenum cofactor repression also appears to act at the proximal transcriptional start site, but the mechanism remains to be established. Tungstate in the growth medium affects moa expression in two ways. Firstly, it can act as a functional molybdate analogue for the ModE-mediated regulation. Secondly, tungstate brings about the loss of the molybdenum cofactor repression of moa. It is proposed that the tungsten derivative of the molybdenum cofactor, which is known to be formed under such conditions, is ineffective in bringing about repression of moa. The complex control of moa is discussed in relation to the synthesis of molybdoenzymes in the bacterium.
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Affiliation(s)
- L A Anderson
- Department of Biochemistry, University of Dundee, Dundee DD1 5EH, Scotland
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50
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Abstract
OBJECTIVE Although recent screening guidelines recommend annual fecal occult blood testing (FOBT) for adults aged > or = 50, a number of studies report that these tests are underused. Systematic efforts to increase awareness of colorectal cancer (CRC) and to promote screening participation are needed to meet national objectives for CRC control. METHODS This study examined CRC-screening practices and evaluated factors related to recent participation in screening by FOBT in a sample of women aged 50 to 80 who were surveyed about their use of clinical preventive services at Group Health Cooperative, a managed care organization in western Washington State. RESULTS Of the 931 women eligible for analysis, 75% reported ever having been screened by FOBT and 48% reported having been screened within 2 years before the survey. Participation in screening did not vary by demographic characteristics or by perceived or actual risk of CRC. Women with a positive attitudes toward CRC screening had sevenfold greater odds of recent screening by FOBT (odds ratio=7.1; 95% confidence interval, 4.4 to 11.6). Only 58% of study women reported that their physicians encouraged CRC screening, but this factor was strongly related to participation (odds ratio=12.7; 95% confidence interval, 6.6 to 24.4). CONCLUSIONS We identified several areas in which understanding of CRC risk may be low. As a whole, these findings suggest that effective strategies to control CRC may include efforts to improve knowledge of risk and prevention, but must also appeal directly to primary care physicians to identify and address their barriers to screening recommendations.
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Affiliation(s)
- M T Mandelson
- Center For Health Studies, Group Health Cooperative, Seattle, Washington, USA.
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