1
|
See I, Jackson KA, Byram R, Toney NC, Grigg C, Magill SS. Nontuberculous Mycobacteria and Laboratory Surveillance, Virginia, USA. Emerg Infect Dis 2024; 30:1302. [PMID: 38782019 DOI: 10.3201/eid3006.240431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024] Open
|
2
|
Grigg C, Jackson KA, Barter D, Czaja CA, Johnston H, Lynfield R, Vagnone PS, Tourdot L, Spina N, Dumyati G, Cassidy PM, Pierce R, Henkle E, Prevots DR, Salfinger M, Winthrop KL, Toney NC, Magill SS. Epidemiology of Pulmonary and Extrapulmonary Nontuberculous Mycobacteria Infections at 4 US Emerging Infections Program Sites: A 6-Month Pilot. Clin Infect Dis 2023; 77:629-637. [PMID: 37083882 PMCID: PMC10444004 DOI: 10.1093/cid/ciad214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 03/28/2023] [Accepted: 04/06/2023] [Indexed: 04/22/2023] Open
Abstract
BACKGROUND Nontuberculous mycobacteria (NTM) cause pulmonary (PNTM) and extrapulmonary (ENTM) disease. Infections are difficult to diagnose and treat, and exposures occur in healthcare and community settings. In the United States, NTM epidemiology has been described largely through analyses of microbiology data from health departments, electronic health records, and administrative data. We describe findings from a multisite pilot of active, laboratory- and population-based NTM surveillance. METHODS The Centers for Disease Control and Prevention's Emerging Infections Program conducted NTM surveillance at 4 sites (Colorado, 5 counties; Minnesota, 2 counties; New York, 2 counties; and Oregon, 3 counties [PNTM] and statewide [ENTM]) from 1 October 2019 through 31 March 2020. PNTM cases were defined using published microbiologic criteria. ENTM cases required NTM isolation from a nonpulmonary specimen, excluding stool and rectal swabs. Patient data were collected via medical record review. RESULTS Overall, 299 NTM cases were reported (PNTM: 231, 77%); Mycobacterium avium complex was the most common species group. Annualized prevalence was 7.5/100 000 population (PNTM: 6.1/100 000; ENTM: 1.4/100 000). Most patients had signs or symptoms in the 14 days before positive specimen collection (ENTM: 62, 91.2%; PNTM: 201, 87.0%). Of PNTM cases, 145 (62.8%) were female and 168 (72.7%) had underlying chronic lung disease. Among ENTM cases, 29 (42.6%) were female, 21 (30.9%) did not have documented underlying conditions, and 26 (38.2%) had infection at the site of a medical device or procedure. CONCLUSIONS Active, population-based NTM surveillance will provide data for monitoring the burden of disease and characterize affected populations to inform interventions.
Collapse
Affiliation(s)
- Cheri Grigg
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Kelly A Jackson
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Devra Barter
- Division of Disease Control and Public Health Response, Colorado Department of Public Health and Environment, Denver, Colorado, USA
| | - Christopher A Czaja
- Division of Disease Control and Public Health Response, Colorado Department of Public Health and Environment, Denver, Colorado, USA
| | - Helen Johnston
- Division of Disease Control and Public Health Response, Colorado Department of Public Health and Environment, Denver, Colorado, USA
| | - Ruth Lynfield
- Minnesota Department of Health, St. Paul, Minnesota, USA
| | | | - Laura Tourdot
- Minnesota Department of Health, St. Paul, Minnesota, USA
| | - Nancy Spina
- New York State Department of Health, Albany, New York, USA
| | - Ghinwa Dumyati
- University of Rochester Medical Center, Rochester, New York, USA
| | - P Maureen Cassidy
- Public Health Division, Oregon Health Authority, Portland, Oregon, USA
| | - Rebecca Pierce
- Public Health Division, Oregon Health Authority, Portland, Oregon, USA
| | - Emily Henkle
- Oregon Health and Science University, Portland, Oregon, USA
| | - D Rebecca Prevots
- National Institutes of Health, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland, USA
| | - Max Salfinger
- University of South Florida College of Public Health & Morsani College of Medicine, Tampa, Florida, USA
| | | | - Nadege Charles Toney
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Shelley S Magill
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| |
Collapse
|
3
|
Conrad AR, Tubach S, Cantu V, Webb LM, Stroika S, Moris S, Davis M, Hunt DC, Bradley KK, Kucerova Z, Strain E, Doyle M, Fields A, Neil KP, Gould LH, Jackson KA, Wise ME, Griffin PM, Jackson BR. Listeria monocytogenes Illness and Deaths Associated With Ongoing Contamination of a Multiregional Brand of Ice Cream Products, United States, 2010-2015. Clin Infect Dis 2023; 76:89-95. [PMID: 35797187 DOI: 10.1093/cid/ciac550] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [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: 03/03/2022] [Revised: 06/23/2022] [Accepted: 06/30/2022] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Frozen foods have rarely been linked to Listeria monocytogenes illness. We describe an outbreak investigation prompted by both hospital clustering of illnesses and product testing. METHODS We identified outbreak-associated listeriosis cases using whole-genome sequencing (WGS), product testing results, and epidemiologic linkage to cases in the same Kansas hospital. We reviewed hospital medical and dietary records, product invoices, and molecular subtyping results. Federal and state officials tested product and environmental samples for L. monocytogenes. RESULTS Kansas officials were investigating 5 cases of listeriosis at a single hospital when, simultaneously, unrelated sampling for a study in South Carolina identified L. monocytogenes in Company A ice cream products made in Texas. Isolates from 4 patients and Company A products were closely related by WGS, and the 4 patients with known exposures had consumed milkshakes made with Company A ice cream while hospitalized. Further testing identified L. monocytogenes in ice cream produced in a second Company A production facility in Oklahoma; these isolates were closely related by WGS to those from 5 patients in 3 other states. These 10 illnesses, involving 3 deaths, occurred from 2010 through 2015. Company A ultimately recalled all products. CONCLUSIONS In this US outbreak of listeriosis linked to a widely distributed brand of ice cream, WGS and product sampling helped link cases spanning 5 years to 2 production facilities, indicating longstanding contamination. Comprehensive sanitation controls and environmental and product testing for L. monocytogenes with regulatory oversight should be implemented for ice cream production.
Collapse
Affiliation(s)
- Amanda R Conrad
- Atlanta Research and Education Foundation, Atlanta, Georgia, USA.,Division of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Sheri Tubach
- Bureau of Epidemiology and Public Health Informatics, Kansas Department of Health and Environment, Topeka, Kansas, USA
| | - Venessa Cantu
- Emerging and Acute Infectious Disease Unit, Texas Department of State Health Services, Austin, Texas, USA
| | - Lindsey Martin Webb
- Bureau of Epidemiology and Public Health Informatics, Kansas Department of Health and Environment, Topeka, Kansas, USA
| | - Steven Stroika
- Division of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Steve Moris
- Division of Food Safety and Lodging, Kansas Department of Agriculture, Manhattan, Kansas, USA
| | - Megan Davis
- Microbiology Division, South Carolina Department of Health and Environmental Control, Columbia, South Carolina, USA
| | - D Charles Hunt
- Bureau of Epidemiology and Public Health Informatics, Kansas Department of Health and Environment, Topeka, Kansas, USA
| | - Kristy K Bradley
- Oklahoma State Department of Health, Oklahoma City, Oklahoma, USA
| | - Zuzana Kucerova
- Division of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Errol Strain
- Center for Food Safety and Applied Nutrition, US Food and Drug Administration, College Park, Maryland, USA
| | - Matthew Doyle
- Center for Food Safety and Applied Nutrition, US Food and Drug Administration, College Park, Maryland, USA
| | - Angela Fields
- Center for Food Safety and Applied Nutrition, US Food and Drug Administration, College Park, Maryland, USA
| | - Karen P Neil
- Division of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - L Hannah Gould
- Division of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Kelly A Jackson
- Division of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Matthew E Wise
- Division of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Patricia M Griffin
- Division of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Brendan R Jackson
- Division of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| |
Collapse
|
4
|
Biggs HM, Jackson KA, Nadle J, Petit S, Ray SM, Lynfield R, Como-Sabetti K, Bernu C, Dumyati G, Gellert A, Tracy M, Schaffner W, See I. 2054. Trends in Incidence and Epidemiology of Methicillin-Resistant Staphylococcus aureus Bloodstream Infection, 2005–2020. Open Forum Infect Dis 2022. [DOI: 10.1093/ofid/ofac492.1676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Abstract
Background
Methicillin-resistant Staphylococcus aureus (MRSA) is a serious antimicrobial resistance threat; prevention efforts have focused primarily on healthcare-associated MRSA infections. We assessed progress in MRSA bloodstream infection (BSI) prevention during 2005-2020.
Methods
MRSA BSI data were from CDC Emerging Infections Program’s active, population-based surveillance for invasive S. aureus in 17 counties in 6 states (sites). A case was defined as isolation of MRSA from a blood culture in a resident of the catchment area. Cases were considered hospital-onset (HO) if the culture was obtained > 3 days after hospitalization, healthcare-associated community-onset (HACO) if the culture was obtained in an outpatient setting or ≤ 3 days after hospitalization in a patient with ≥ 1 prior major healthcare exposures, or otherwise community-associated (CA). Annual incidence was calculated per 100,000 census population for each epidemiologic classification.
Results
MRSA BSI incidence decreased from 32.2 (per 100,000 population) in 2005 to a nadir of 15.7 in 2016, then increased during 2017-2019 to 17.0 and decreased in 2020 to 16.4. (Figure 1). HACO comprised > 50% of all cases throughout 2005-2020 and mirrored the pattern of overall rates. HO rates decreased from 9.2 to 2.3 during 2005-2013 and fell below CA rates starting in 2012; rates were lowest during 2017-2019 (1.8-2.1) and increased in 2020 to 2.4. CA rates remained 3.0-4.6 throughout the surveillance period; during 2015-2019, rates increased from 3.0 to 4.0, then in 2020 decreased to 3.4. All sites saw decreases in overall MRSA BSI rates by > 50% during 2005-2020, and HACO rates in 2020 were at least 50% of total rates for each site. However, the relative proportion of CA and HO rates during 2020 varied by site (Figure 2), with CA MRSA BSI more than twice as common as HO MRSA BSI in two sites. Figure 1.Incidence rates of methicillin-resistant Staphylococcus aureus bloodstream infection, by epidemiologic classification, in 6 Emerging Infections Program sites, 2005–2020Figure 2.Ratio of incidence (per 100,000 population) of community-associated (CA) to hospital-onset (HO) methicillin-resistant Staphylococcus aureus bloodstream infection, in 6 Emerging Infections Program sites, 2020
Conclusion
MRSA BSI rates fell by more than half during the 15-year surveillance period, reflecting substantial declines in HACO and HO cases; however, the recent plateau suggests a need for additional preventive measures that restore previous progress. Increased focus on CA MRSA BSI prevention may be needed in some areas depending on local epidemiology.
Disclosures
Ghinwa Dumyati, MD, Pfizer: Grant/Research Support William Schaffner, MD, VBI Vaccines: Advisor/Consultant.
Collapse
Affiliation(s)
- Holly M Biggs
- U.S. Centers for Disease Control and Prevention , Atlanta , Georgia
| | - Kelly A Jackson
- U.S. Centers for Disease Control and Prevention , Atlanta , Georgia
| | - Joelle Nadle
- California Emerging Infections Program , Oakland, California
| | - Susan Petit
- Connecticut Department of Public Health , Hartford, Connecticut
| | - Susan M Ray
- Emory University School of Medicine , Atlanta , Georgia
| | - Ruth Lynfield
- Minnesota Department of Health , St. Paul, Minnesota
| | | | - Carmen Bernu
- Minnesota Department of Health , St. Paul, Minnesota
| | - Ghinwa Dumyati
- University of Rochester Medical Center , Rochester, New York
| | - Anita Gellert
- University of Rochester Medical Center , Rochester, New York
| | - Marissa Tracy
- University of Rochester Medical Center , Rochester, New York
| | | | - Isaac See
- U.S. Centers for Disease Control and Prevention , Atlanta , Georgia
| |
Collapse
|
5
|
See I, Lale A, Marquez P, Streiff MB, Wheeler AP, Tepper NK, Woo EJ, Broder KR, Edwards KM, Gallego R, Geller AI, Jackson KA, Sharma S, Talaat KR, Walter EB, Akpan IJ, Ortel TL, Urrutia VC, Walker SC, Yui JC, Shimabukuro TT, Mba-Jonas A, Su JR, Shay DK. Case Series of Thrombosis With Thrombocytopenia Syndrome After COVID-19 Vaccination-United States, December 2020 to August 2021. Ann Intern Med 2022; 175:513-522. [PMID: 35038274 PMCID: PMC8787833 DOI: 10.7326/m21-4502] [Citation(s) in RCA: 79] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Thrombosis with thrombocytopenia syndrome (TTS) is a potentially life-threatening condition associated with adenoviral-vectored COVID-19 vaccination. It presents similarly to spontaneous heparin-induced thrombocytopenia. Twelve cases of cerebral venous sinus thrombosis after vaccination with the Ad26.COV2.S COVID-19 vaccine (Janssen/Johnson & Johnson) have previously been described. OBJECTIVE To describe surveillance data and reporting rates of all reported TTS cases after COVID-19 vaccination in the United States. DESIGN Case series. SETTING United States. PATIENTS Case patients receiving a COVID-19 vaccine from 14 December 2020 through 31 August 2021 with thrombocytopenia and thrombosis (excluding isolated ischemic stroke or myocardial infarction) reported to the Vaccine Adverse Event Reporting System. If thrombosis was only in an extremity vein or pulmonary embolism, a positive enzyme-linked immunosorbent assay for antiplatelet factor 4 antibodies or functional heparin-induced thrombocytopenia platelet test result was required. MEASUREMENTS Reporting rates (cases per million vaccine doses) and descriptive epidemiology. RESULTS A total of 57 TTS cases were confirmed after vaccination with Ad26.COV2.S (n = 54) or a messenger RNA (mRNA)-based COVID-19 vaccine (n = 3). Reporting rates for TTS were 3.83 per million vaccine doses (Ad26.COV2.S) and 0.00855 per million vaccine doses (mRNA-based COVID-19 vaccines). The median age of patients with TTS after Ad26.COV2.S vaccination was 44.5 years (range, 18 to 70 years), and 69% of patients were women. Of the TTS cases after mRNA-based COVID-19 vaccination, 2 occurred in men older than 50 years and 1 in a woman aged 50 to 59 years. All cases after Ad26.COV2.S vaccination involved hospitalization, including 36 (67%) with intensive care unit admission. Outcomes of hospitalizations after Ad26.COV2.S vaccination included death (15%), discharge to postacute care (17%), and discharge home (68%). LIMITATIONS Underreporting and incomplete case follow-up. CONCLUSION Thrombosis with thrombocytopenia syndrome is a rare but serious adverse event associated with Ad26.COV2.S vaccination. The different demographic characteristics of the 3 cases reported after mRNA-based COVID-19 vaccines and the much lower reporting rate suggest that these cases represent a background rate. PRIMARY FUNDING SOURCE Centers for Disease Control and Prevention.
Collapse
Affiliation(s)
- Isaac See
- Centers for Disease Control and Prevention COVID-19 Response Team, Atlanta, Georgia (I.S., A.L., P.M., N.K.T., K.R.B., R.G., A.I.G., K.A.J., S.S., T.T.S., J.R.S., D.K.S.)
| | - Allison Lale
- Centers for Disease Control and Prevention COVID-19 Response Team, Atlanta, Georgia (I.S., A.L., P.M., N.K.T., K.R.B., R.G., A.I.G., K.A.J., S.S., T.T.S., J.R.S., D.K.S.)
| | - Paige Marquez
- Centers for Disease Control and Prevention COVID-19 Response Team, Atlanta, Georgia (I.S., A.L., P.M., N.K.T., K.R.B., R.G., A.I.G., K.A.J., S.S., T.T.S., J.R.S., D.K.S.)
| | - Michael B Streiff
- The Johns Hopkins University, Baltimore, Maryland (M.B.S., K.R.T., V.C.U., J.C.Y.)
| | - Allison P Wheeler
- Vanderbilt University Medical Center, Nashville, Tennessee (A.P.W., K.M.E., S.C.W.)
| | - Naomi K Tepper
- Centers for Disease Control and Prevention COVID-19 Response Team, Atlanta, Georgia (I.S., A.L., P.M., N.K.T., K.R.B., R.G., A.I.G., K.A.J., S.S., T.T.S., J.R.S., D.K.S.)
| | - Emily Jane Woo
- Food and Drug Administration, Center for Biologics Evaluation and Research, Silver Spring, Maryland (E.J.W., A.M.)
| | - Karen R Broder
- Centers for Disease Control and Prevention COVID-19 Response Team, Atlanta, Georgia (I.S., A.L., P.M., N.K.T., K.R.B., R.G., A.I.G., K.A.J., S.S., T.T.S., J.R.S., D.K.S.)
| | - Kathryn M Edwards
- Vanderbilt University Medical Center, Nashville, Tennessee (A.P.W., K.M.E., S.C.W.)
| | - Ruth Gallego
- Centers for Disease Control and Prevention COVID-19 Response Team, Atlanta, Georgia (I.S., A.L., P.M., N.K.T., K.R.B., R.G., A.I.G., K.A.J., S.S., T.T.S., J.R.S., D.K.S.)
| | - Andrew I Geller
- Centers for Disease Control and Prevention COVID-19 Response Team, Atlanta, Georgia (I.S., A.L., P.M., N.K.T., K.R.B., R.G., A.I.G., K.A.J., S.S., T.T.S., J.R.S., D.K.S.)
| | - Kelly A Jackson
- Centers for Disease Control and Prevention COVID-19 Response Team, Atlanta, Georgia (I.S., A.L., P.M., N.K.T., K.R.B., R.G., A.I.G., K.A.J., S.S., T.T.S., J.R.S., D.K.S.)
| | - Shashi Sharma
- Centers for Disease Control and Prevention COVID-19 Response Team, Atlanta, Georgia (I.S., A.L., P.M., N.K.T., K.R.B., R.G., A.I.G., K.A.J., S.S., T.T.S., J.R.S., D.K.S.)
| | - Kawsar R Talaat
- The Johns Hopkins University, Baltimore, Maryland (M.B.S., K.R.T., V.C.U., J.C.Y.)
| | - Emmanuel B Walter
- Duke University School of Medicine, Durham, North Carolina (E.B.W., T.L.O.)
| | - Imo J Akpan
- Columbia University Irving Medical Center, New York, New York (I.J.A.)
| | - Thomas L Ortel
- Duke University School of Medicine, Durham, North Carolina (E.B.W., T.L.O.)
| | - Victor C Urrutia
- The Johns Hopkins University, Baltimore, Maryland (M.B.S., K.R.T., V.C.U., J.C.Y.)
| | - Shannon C Walker
- Vanderbilt University Medical Center, Nashville, Tennessee (A.P.W., K.M.E., S.C.W.)
| | - Jennifer C Yui
- The Johns Hopkins University, Baltimore, Maryland (M.B.S., K.R.T., V.C.U., J.C.Y.)
| | - Tom T Shimabukuro
- Centers for Disease Control and Prevention COVID-19 Response Team, Atlanta, Georgia (I.S., A.L., P.M., N.K.T., K.R.B., R.G., A.I.G., K.A.J., S.S., T.T.S., J.R.S., D.K.S.)
| | - Adamma Mba-Jonas
- Food and Drug Administration, Center for Biologics Evaluation and Research, Silver Spring, Maryland (E.J.W., A.M.)
| | - John R Su
- Centers for Disease Control and Prevention COVID-19 Response Team, Atlanta, Georgia (I.S., A.L., P.M., N.K.T., K.R.B., R.G., A.I.G., K.A.J., S.S., T.T.S., J.R.S., D.K.S.)
| | - David K Shay
- Centers for Disease Control and Prevention COVID-19 Response Team, Atlanta, Georgia (I.S., A.L., P.M., N.K.T., K.R.B., R.G., A.I.G., K.A.J., S.S., T.T.S., J.R.S., D.K.S.)
| |
Collapse
|
6
|
Jackson KA, Barter D, Czaja CA, Johnston H, Lynfield R, Lynfield R, Vagnone PS, Tourdot L, Spina N, Dumyati G, Peters S, Escutia G, Pierce R, Henkle E, Prevots DR, Salfinger M, Winthrop KL, Winthrop KL, Toney NC, Magill S, Grigg C. 1408. Population-based Nontuberculous Mycobacteria Surveillance in Four Emerging Infections Program Sites, October 2019–March 2020. Open Forum Infect Dis 2021. [PMCID: PMC8644464 DOI: 10.1093/ofid/ofab466.1600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background Nontuberculous mycobacteria (NTM) cause pulmonary (PNTM) and extrapulmonary (ENTM) disease. NTM infections are difficult to diagnose and treat; environmental exposures occur in both healthcare and community settings. Few population-based studies describe NTM disease epidemiology. Current data indicate PNTM disease and ENTM skin and soft tissue infections are increasing. We describe findings from a multi-site pilot of population-based NTM surveillance. Methods CDC’s Emerging Infections Program conducted active, laboratory- and population-based surveillance for NTM cases occurring in 4 sites (Colorado [5 counties], Minnesota [2 counties], New York [2 counties], and Oregon [3 counties PNTM; statewide ENTM]) during October 1, 2019–March 31, 2020. PNTM cases were defined according to current published microbiologic criteria, based on isolation of NTM in respiratory cultures or tissue. ENTM cases required NTM isolation from a non-pulmonary specimen, excluding stool or rectal swabs. Demographic, clinical, exposure, and laboratory data were collected via medical record review. We calculated overall incidence per 100,000 population using census data and performed descriptive analyses of medical record data. Results Overall, 299 NTM cases were reported (231 [77%] PNTM); M. avium was the most commonly isolated species (Table). NTM incidence was 3.8 per 100,000 (PNTM 3.1/100,000; ENTM 0.7/100,000). Most patients with available data had ≥1 sign or symptom in the 14 days before culture (63 [97%] ENTM, 203 [92%] PNTM). During the surveillance period, 187 (63%) had their first infection-defining culture collected in an outpatient setting (33 [49%] ENTM, 154 [67%] PNTM). Of PNTM cases, 145 (64%) were female, and 154 (67%) had underlying pulmonary disease. Among ENTM cases, 29 (43%) were female, 9 (13%) had diabetes, 8 (12%) had HIV and 27 (40%) had infection at the site of a medical device or healthcare procedure. Common ENTM infection types were lymphadenitis (16 [24%]) and skin abscess (12 [18%]). Table. Characteristics of persons with NTM infection identified in population-based surveillance, October 1, 2019–March 31, 2020. ![]()
Conclusion Characterizing disease burden and affected populations with population-based NTM surveillance will provide data to inform potential interventions and monitor prevention strategy impact. Disclosures Christopher A. Czaja, MD, DrPH, Centers for Disease Control and Prevention (Grant/Research Support) Ruth Lynfield, MD, Nothing to disclose Ghinwa Dumyati, MD, Pfizer (Grant/Research Support)Roche Diagnostics (Advisor or Review Panel member) Emily Henkle, PhD, MPH, AN2 (Consultant, Advisor or Review Panel member)Zambon (Advisor or Review Panel member) Kevin L. Winthrop, MD, MPH, Insmed (Consultant, Grant/Research Support)Paratek (Consultant)RedHill (Consultant)Spero (Consultant) Kevin L. Winthrop, MD, MPH, Insmed (Consultant, Research Grant or Support)Paratek (Consultant)RedHill Biopharma (Consultant)Spero (Consultant)
Collapse
Affiliation(s)
| | - Devra Barter
- Colorado Department of Public Health and Environment, Denver, Colorado
| | | | - Helen Johnston
- Colorado Department of Public Health and Environment, Denver, Colorado
| | | | | | | | | | - Nancy Spina
- New York State Department of Health, Albany, NY
| | - Ghinwa Dumyati
- New York Rochester Emerging Infections Program at the University of Rochester Medical Center, Rochester, NY
| | - Shantel Peters
- University of Rochester Medical Center, Rochester, New York
| | | | | | - Emily Henkle
- Oregon Health & Science University, Portland, OR
| | - D Rebecca Prevots
- National Institutes of Health, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland
| | - Max Salfinger
- University of South Florida College of Public Health, Tampa, Florida
| | | | | | - Nadege Charles Toney
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
| | | | - Cheri Grigg
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
| |
Collapse
|
7
|
Jackson KA, Gokhale RH, Nadle J, Ray SM, Dumyati G, Schaffner W, Ham DC, Magill SS, Lynfield R, See I. Public Health Importance of Invasive Methicillin-sensitive Staphylococcus aureus Infections: Surveillance in 8 US Counties, 2016. Clin Infect Dis 2021; 70:1021-1028. [PMID: 31245810 DOI: 10.1093/cid/ciz323] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 04/15/2019] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Public health and infection control prevention and surveillance efforts in the United States have primarily focused on methicillin-resistant Staphylococcus aureus (MRSA). We describe the public health importance of methicillin-susceptible S. aureus (MSSA) in selected communities. METHODS We analyzed Emerging Infections Program surveillance data for invasive S. aureus (SA) infections (isolated from a normally sterile body site) in 8 counties in 5 states during 2016. Cases were considered healthcare-associated if culture was obtained >3 days after hospital admission; if associated with dialysis, hospitalization, surgery, or long-term care facility (LTCF) residence within 1 year prior; or if a central venous catheter was present ≤2 days prior. Incidence per 100 000 census population was calculated, and a multivariate logistic regression model with random intercepts was used to compare MSSA risk factors with those of MRSA. RESULTS Invasive MSSA incidence (31.3/100 000) was 1.8 times higher than MRSA (17.5/100 000). Persons with MSSA were more likely than those with MRSA to have no underlying medical conditions (adjusted odds ratio [aOR], 2.06; 95% confidence interval [CI], 1.26-3.39) and less likely to have prior hospitalization (aOR, 0.70; 95% CI, 0.60-0.82) or LTCF residence (aOR, 0.37; 95% CI, 0.29-0.47). MSSA accounted for 59.7% of healthcare-associated cases and 60.1% of deaths. CONCLUSIONS Although MRSA tended to be more closely associated with healthcare exposures, invasive MSSA is a substantial public health problem in the areas studied. Public health and infection control prevention efforts should consider MSSA prevention in addition to MRSA.
Collapse
Affiliation(s)
- Kelly A Jackson
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Runa H Gokhale
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
| | | | - Susan M Ray
- Georgia Emerging Infections Program and the Atlanta Veterans Affairs Medical Center, Decatur
| | | | | | - David C Ham
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Shelley S Magill
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
| | | | - Isaac See
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
| |
Collapse
|
8
|
Self JL, Conrad A, Stroika S, Jackson A, Whitlock L, Jackson KA, Beal J, Wellman A, Fatica MK, Bidol S, Huth PP, Hamel M, Franklin K, Tschetter L, Kopko C, Kirsch P, Wise ME, Basler C. Multistate Outbreak of Listeriosis Associated with Packaged Leafy Green Salads, United States and Canada, 2015-2016. Emerg Infect Dis 2019; 25:1461-1468. [PMID: 31310227 PMCID: PMC6649349 DOI: 10.3201/eid2508.180761] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
We investigated an outbreak of listeriosis detected by whole-genome multilocus sequence typing and associated with packaged leafy green salads. Nineteen cases were identified in the United States during July 5, 2015–January 31, 2016; isolates from case-patients were closely related (median difference 3 alleles, range 0–16 alleles). Of 16 case-patients interviewed, all reported salad consumption. Of 9 case-patients who recalled brand information, all reported brands processed at a common US facility. The Public Health Agency of Canada simultaneously investigated 14 cases of listeriosis associated with this outbreak. Isolates from the processing facility, packaged leafy green salads, and 9 case-patients from Canada were closely related to US clinical isolates (median difference 3 alleles, range 0–16 alleles). This investigation led to a recall of packaged leafy green salads made at the processing facility. Additional research is needed to identify best practices and effective policies to reduce the likelihood of Listeria monocytogenes contamination of fresh produce.
Collapse
|
9
|
Jackson KA, Gokhale RH, Nadle J, Petit S, Ray S, Harrison L, Lynfield R, Dumyati G, Schaffner W, See I. 469. Contributions of Infections among Persons Who Inject Drugs to the Changing Incidence of Healthcare-Associated, Community-Onset Methicillin-Resistant Staphylococcus aureus Infections, 2009–2017. Open Forum Infect Dis 2019. [PMCID: PMC6809088 DOI: 10.1093/ofid/ofz360.542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Recently, overall reductions for invasive MRSA infections (isolation from a normally sterile site) have slowed. Healthcare-associated community-onset (HACO) invasive methicillin-resistant Staphylococcus aureus (MRSA) infections are those with recent healthcare exposures who develop MRSA infection outside acute care hospitals, and account for most invasive MRSA infections. HACO incidence decreased 6.6% per year during 2005–2008; the contribution of persons who inject drugs (PWID) to HACO incidence has not been reported.
Methods
We identified invasive MRSA infections using active, population- and laboratory-based surveillance data during 2009–2017 from 25 counties in 7 sites (CA, CT, GA, MD, MN, NY, TN). Cases were HACO if culture was obtained from an outpatient, or ≤3 days after hospitalization in a patient with ≥1 of the following healthcare exposures (HEs): hospitalization, surgery, dialysis, or residence in a long-term care facility (LTCF) in the past year; or central vascular catheter ≤2 days before culture. We calculated incidence (per census population) overall, for PWID cases and others, and for cases associated with each HE. For each HE, we calculated the proportion of overall incidence increase for PWID and others.
Results
HACO MRSA incidence declined overall from 2009 to 2016 but increased from 2016 to 2017 overall (8%), for both PWID (63%) and others (5%) (figure). For both PWID and non-PWID, incidence from 2016 to 2017 increased by 0.5 cases/100,000 population; 91% of the increase in PWID occurred in cases with a past year hospitalization while 78% of the increase in cases not associated with injection drug use (IDU) occurred in cases with past year LTCF residence. Past year LTCF residence was less common among PWID (16%) then among other cases (38%, P < 0.01).
Conclusion
After years of declines, HACO MRSA incidence increased equally in 2017 for cases associated with IDU and in cases unrelated to IDU. Increases in PWID-associated cases account for half the overall increase, indicating that efforts to reduce HACO MRSA should address PWID risk factors as these infections may be due to self-injection. In addition, increases not related to PWID, if sustained, would be a reversal of historic trends and require further investigation into causes.
Disclosures
All authors: No reported disclosures.
Collapse
Affiliation(s)
- Kelly A Jackson
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | | | - Joelle Nadle
- California Emerging Infections Program, Oakland, California
| | - Susan Petit
- Connecticut Department of Public Health, Hartford, Connecticut
| | - Susan Ray
- Emory University School of Medicine, Atlanta, Georgia
| | - Lee Harrison
- University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Ruth Lynfield
- Minnesota Department of Health, Saint Paul, Minnesota
| | - Ghinwa Dumyati
- New York Rochester Emerging Infections Program at the University of Rochester Medical Center, Rochester, New York
| | | | - Isaac See
- Centers for Disease Control and Prevention, Atlanta, Georgia
| |
Collapse
|
10
|
Bardossy AC, Gokhale RH, Hartnett K, Hatfield KM, Jackson KA, Felsen CB, McDonald R, Kracalik I, Lucas T, McGovern OL, Van Beneden C, Vallabhaneni S, Williams SR, Mendoza M, Bohm MK, Brooks J, Asher AK, Magill SS, Fiore A, Blog D, Dufort E, See I, Dumyati G. 1890. Missed Clinical Opportunities to Prevent Infections and Treat Substance Use Disorder (SUD) in People Who Inject Drugs (PWID). Open Forum Infect Dis 2019. [PMCID: PMC6808892 DOI: 10.1093/ofid/ofz359.120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Background The age-adjusted rate of drug overdose deaths in the United States tripled from 1999 to 2016. Public health surveillance data indicate that an increasing proportion of infections due to bacterial and fungal pathogens is associated with injection drug use (IDU). We describe healthcare encounters (HCEs) of PWID as potential opportunities to prevent infections related to IDU by identifying risks and treating SUD, including with medication-assisted treatment (MAT) for opioid use disorder. Methods At six hospitals in western New York, we abstracted medical records from hospital admissions and emergency department (ED) visits for PWID (i.e., IDU in the preceding year) who had positive cultures for Staphylococcus aureus (any clinical specimen, April–July 2017), group A Streptococcus (invasive specimens, all of 2017) or Candida spp. (blood specimens, all of 2017). We reviewed hospital admission and ED records for 1 year preceding the positive culture to identify visits during which opportunities to prevent infection and treat SUD by addressing SUD and IDU were missed. Results We identified 99 PWID with positive cultures. The median age was 33 years (range 19–68) and 61 were female. Sixty-nine had a skin and soft-tissue infection, 44 had a bloodstream infection, and 20 had both. Thirty-one PWID left against medical advice during a hospital admission or an ED visit. Seventy-nine PWID were hospitalized, of whom 4 died. Ninety-five used opioids and 71 used cocaine in the preceding year. Seventy-five PWID had an HCE in the 12 months prior to the index visit, with a median of two HCE per person (interquartile range 1–4); 53 of PWID had a previous HCE for infection and 28 for opioid overdose. SUD was documented during a prior HCE at the same hospital for 61 PWID, but only 10 (16%) were offered MAT during any prior HCE and for 24 (39%) there was no documentation that any form of treatment for SUD was offered. Conclusion In this cohort, PWID frequently had one or more healthcare encounters documented at the same hospital in the year prior to a serious bacterial or fungal infection. These prior HCEs were often for infections or overdose that signaled the need for MAT, demonstrating that there are critical missed opportunities to identify risks, prevent infection, and treat SUD. Disclosures All Authors: No reported Disclosures.
Collapse
Affiliation(s)
- Ana C Bardossy
- Centers for Disease Control and Prevention, Decatur, Georgia
| | - Runa H Gokhale
- Centers for Disease Control and Prevention, Decatur, Georgia
| | | | - Kelly M Hatfield
- Centers for Disease Control and Prevention (CDC), Atlanta, Georgia
| | - Kelly A Jackson
- Centers for Disease Control and Prevention, Decatur, Georgia
| | | | - Robert McDonald
- Centers for Disease Control and Prevention, Decatur, Georgia
| | - Ian Kracalik
- Centers for Disease Control and Prevention, Decatur, Georgia
| | - Todd Lucas
- Centers for Disease Control and Prevention, Decatur, Georgia
| | | | | | | | | | | | - Michele K Bohm
- Centers for Disease Control and Prevention, Decatur, Georgia
| | - John Brooks
- US Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Alice K Asher
- Centers for Disease Control and Prevention, Decatur, Georgia
| | | | - Anthony Fiore
- DIv of Healthcare Quality Promotion, Atlanta, Georgia
| | - Debra Blog
- New York State Department of Health, Albany, New York
| | | | - Isaac See
- Centers for Disease Control and Prevention, Decatur, Georgia
| | - Ghinwa Dumyati
- New York Rochester Emerging Infections Program at the University of Rochester Medical Center, Rochester, New York
| |
Collapse
|
11
|
Rao AK, Lin NH, Jackson KA, Mody RK, Griffin PM. Clinical Characteristics and Ancillary Test Results Among Patients With Botulism-United States, 2002-2015. Clin Infect Dis 2019; 66:S4-S10. [PMID: 29293936 DOI: 10.1093/cid/cix935] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Background Botulism is classically described as a bilateral, symmetric, descending flaccid paralysis in an afebrile and alert patient without sensory findings. We describe the reported spectrum of clinical findings among persons >12 months of age in the United States during 2002-2015. Methods The Centers for Disease Control and Prevention collects clinical findings reported by physicians treating suspected cases of botulism nationwide. We analyzed symptoms and signs, and neuroimaging and cerebrospinal fluid (CSF) results. A case was defined as illness compatible with botulism with laboratory confirmation or epidemiologic link to a confirmed case, and presence or absence of at least 1 sign or symptom recorded. Physicians' differential diagnoses were evaluated. Results Clinical information was evaluated for 332 botulism cases; data quality and completeness were variable. Most had no fever (99%), descending paralysis (93%), no mental status change (91%), at least 1 ocular weakness finding (84%), and neuroimaging without acute changes (82%). Some had paresthesias (17%), elevated CSF protein level (13%), and other features sometimes considered indicative of alternative diagnoses. Five of 71 (7%) cases with sufficient information were reported to have atypical findings (eg, at least 1 cranial nerve finding that was unilateral or ascending paralysis). Illnesses on the physician differential included Guillain-Barré syndrome (99 cases) and myasthenia gravis (76 cases) and, rarely, gastrointestinal-related illness (5 cases), multiple sclerosis (3 cases), sepsis (3 cases), and Lyme disease (2 cases). Conclusions Our analysis illustrates that classic symptoms and signs were common among patients with botulism but that features considered atypical were reported by some physicians. Diagnosis can be challenging, as illustrated by the broad range of illnesses on physician differentials.
Collapse
Affiliation(s)
- Agam K Rao
- Enteric Diseases Epidemiology Branch, Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Neal H Lin
- Enteric Diseases Epidemiology Branch, Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Kelly A Jackson
- Enteric Diseases Epidemiology Branch, Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Rajal K Mody
- Enteric Diseases Epidemiology Branch, Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Patricia M Griffin
- Enteric Diseases Epidemiology Branch, Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| |
Collapse
|
12
|
Hartnett KP, Jackson KA, Felsen C, McDonald R, Bardossy AC, Gokhale RH, Kracalik I, Lucas T, McGovern O, Van Beneden CA, Mendoza M, Bohm M, Brooks JT, Asher AK, Magill SS, Fiore A, Blog D, Dufort EM, See I, Dumyati G. Bacterial and Fungal Infections in Persons Who Inject Drugs - Western New York, 2017. MMWR Morb Mortal Wkly Rep 2019; 68:583-586. [PMID: 31269011 PMCID: PMC6613572 DOI: 10.15585/mmwr.mm6826a2] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
13
|
Sharp SM, McLellan WA, Rotstein DS, Costidis AM, Barco SG, Durham K, Pitchford TD, Jackson KA, Daoust PY, Wimmer T, Couture EL, Bourque L, Frasier T, Frasier B, Fauquier D, Rowles TK, Hamilton PK, Pettis H, Moore MJ. Gross and histopathologic diagnoses from North Atlantic right whale Eubalaena glacialis mortalities between 2003 and 2018. Dis Aquat Organ 2019; 135:1-31. [PMID: 31219432 DOI: 10.3354/dao03376] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Seventy mortalities of North Atlantic right whales Eubalaena glacialis (NARW) were documented between 2003 and 2018 from Florida, USA, to the Gulf of St. Lawrence, Canada. These included 29 adults, 14 juveniles, 10 calves, and 17 of unknown age class. Females represented 65.5% (19/29) of known-sex adults. Fourteen cases had photos only; 56 carcasses received external examinations, 44 of which were also necropsied. Cause of death was determined in 43 cases, of which 38 (88.4%) were due to anthropogenic trauma: 22 (57.9%) from entanglement, and 16 (42.1%) from vessel strike. Gross and histopathologic lesions associated with entanglement were often severe and included deep lacerations caused by constricting line wraps around the flippers, flukes, and head/mouth; baleen plate mutilation; chronic extensive bone lesions from impinging line, and traumatic scoliosis resulting in compromised mobility in a calf. Chronically entangled whales were often in poor body condition and had increased cyamid burden, reflecting compromised health. Vessel strike blunt force injuries included skull and vertebral fractures, blubber and muscle contusions, and large blood clots. Propeller-induced wounds often caused extensive damage to blubber, muscle, viscera, and bone. Overall prevalence of NARW entanglement mortalities increased from 21% (1970-2002) to 51% during this study period. This demonstrates that despite mitigation efforts, entanglements and vessel strikes continue to inflict profound physical trauma and suffering on individual NARWs. These cumulative mortalities are also unsustainable at the population level, so urgent and aggressive intervention is needed to end anthropogenic mortality in this critically endangered species.
Collapse
Affiliation(s)
- S M Sharp
- International Fund for Animal Welfare, Yarmouth Port, MA 02675, USA Addresses for other authors are given in the supplements at www.int-res.com/articles/suppl/d135p001_supp.pdf
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
14
|
Jackson KA, Bohm MK, Brooks JT, Asher A, Nadle J, Bamberg WM, Petit S, Ray SM, Harrison LH, Lynfield R, Dumyati G, Schaffner W, Townes JM, See I. Invasive Methicillin-Resistant Staphylococcus aureus Infections Among Persons Who Inject Drugs - Six Sites, 2005-2016. MMWR Morb Mortal Wkly Rep 2018; 67:625-628. [PMID: 29879096 PMCID: PMC5991809 DOI: 10.15585/mmwr.mm6722a2] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
15
|
Abstract
Since 2006, the number of reported US listeriosis outbreaks associated with cheese made under unsanitary conditions has increased. Two-thirds were linked to Latin-style soft cheese, often affecting pregnant Hispanic women and their newborns. Adherence to pasteurization protocols and sanitation measures to avoid contamination after pasteurization can reduce future outbreaks.
Collapse
|
16
|
Lenhart PA, Jackson KA, White JA. Heritable variation in prey defence provides refuge for subdominant predators. Proc Biol Sci 2018; 285:rspb.2018.0523. [PMID: 29848647 DOI: 10.1098/rspb.2018.0523] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 05/01/2018] [Indexed: 11/12/2022] Open
Abstract
Generalist predators with broadly overlapping niches commonly coexist on seemingly identical sets of prey. Here, we provide empirical demonstration that predators can differentially exploit fine-grained niches generated by variable, heritable and selective defences within a single prey species. Some, but not all, clones of the aphid Aphis craccivora are toxic towards the dominant invasive predatory ladybeetle, Harmonia axyridis However, other less competitive ladybeetle species are not affected by the aphid's toxic trait. In laboratory and open field experiments, we show: (i) that subdominant ladybeetle species were able to exploit the toxic aphids, benefitting from the suppression of the dominant predator; and (ii) that this narrow-spectrum toxicity can function as an anti-predator defence for the aphid, but depends on enemy community context. Our results demonstrate that niche differentiation among generalist predators may hinge upon previously underappreciated heritable variation in prey defence, which, in turn, may promote diversity and stability of enemy communities invaded by a dominant predator.
Collapse
Affiliation(s)
- Paul A Lenhart
- Department of Entomology, S-225 Agricultural Science Center N, University of Kentucky, Lexington, KY, USA
| | - Kelly A Jackson
- Department of Entomology, S-225 Agricultural Science Center N, University of Kentucky, Lexington, KY, USA
| | - Jennifer A White
- Department of Entomology, S-225 Agricultural Science Center N, University of Kentucky, Lexington, KY, USA
| |
Collapse
|
17
|
Jackson KA, Sanchez-Santos MT, MacKinnon AL, Turner A, Kuznik K, Ellis S, Box C, Hill J, Javaid MK, Cooper C, Arden NK, Newton JL. Bone density and body composition in newly licenced professional jockeys. Osteoporos Int 2017; 28:2675-2682. [PMID: 28612306 PMCID: PMC5550520 DOI: 10.1007/s00198-017-4086-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 05/08/2017] [Indexed: 11/25/2022]
Abstract
UNLABELLED The primary objective is the description of bone mineral density (BMD) and body composition in newly licensed jockeys. One in three male, flat jockeys has a very low bone mineral density. Further research is needed to assess the short-term risk of fractures and long-term health implications of these findings. INTRODUCTION Describe bone mineral density (BMD) and body composition in entry-level male and female, flat and jump jockeys in Great Britain. METHODS Data was collected on jockeys applying for a professional jockey license between 2013 and 2015. Areal BMD at the spine, femoral neck (FN), total hip and body composition were assessed by dual-energy X-ray absorptiometry (DXA) scan. We examined differences between BMD and body composition by gender and race type (flat or jump). Volumetric bone mineral apparent density (BMAD) of the spine and FN was also calculated to account for group differences in bone size. RESULTS Seventy-nine male flat jockeys (age 18.5 ± 1.9, BMI 19.0 ± 1.4), 69 male jump (age 20.7 ± 2.0, BMI 20.6 ± 1.3) and 37 female flat jockeys (age 19.3 ± 2.0, BMI 20.8 ± 1.7) took part in this study. Spine BMD Z-scores ≤-2 for male flat, male jump and female flat jockeys were 29, 13 and 2.7%, respectively. Spine BMD was lower in male than female flat jockeys (p<0.001). All BMD scores were lower in male flat compared to male jump jockeys (p<0.001). Body fat percent (BF %) was lower in male flat jockeys compared to male jump and female flat jockeys (p<0.05). Lean mass index (LMI) was lower in male flat compared to male jump jockeys (p<0.001). CONCLUSIONS Male flat jockeys had a significantly lower BMD, LMI and BF% compared to jump jockeys and female flat jockeys. Male flat jockeys had lower spine BMD scores than females. Individual bone maturation may influence these findings. Further investigation into the relevance of low BMD and altered body composition on jockey health is required.
Collapse
Affiliation(s)
- K A Jackson
- Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK.
| | - M T Sanchez-Santos
- Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
- Oxford NIHR Musculoskeletal Biomedical Research Unit, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - A L MacKinnon
- Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - A Turner
- Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - K Kuznik
- Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
- British Horseracing Authority, 75 High Holborn, London, UK
| | - S Ellis
- Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - C Box
- University of Oxford Medical School, Oxford, UK
| | - J Hill
- British Horseracing Authority, 75 High Holborn, London, UK
| | - M K Javaid
- Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
- MRC Lifecourse Epidemiology Unit, Southampton General Hospital, University of Southampton, Southampton, UK
| | - C Cooper
- Oxford NIHR Musculoskeletal Biomedical Research Unit, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
- MRC Lifecourse Epidemiology Unit, Southampton General Hospital, University of Southampton, Southampton, UK
| | - N K Arden
- Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
- Oxford NIHR Musculoskeletal Biomedical Research Unit, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
- MRC Lifecourse Epidemiology Unit, Southampton General Hospital, University of Southampton, Southampton, UK
| | - J L Newton
- Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| |
Collapse
|
18
|
Jackson KA, McCord JS, White JA. A window of opportunity: Subdominant predators can use suboptimal prey. Ecol Evol 2017; 7:5269-5275. [PMID: 28770065 PMCID: PMC5528202 DOI: 10.1002/ece3.3139] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 05/17/2017] [Indexed: 11/17/2022] Open
Abstract
Introduced species have been linked to declines of native species through mechanisms including intraguild predation and exploitative competition. However, coexistence among species may be promoted by niche partitioning if native species can use resources that the invasive species cannot. Previous research has shown that some strains of the aphid Aphis craccivora are toxic to a competitively dominant invasive lady beetle, Harmonia axyridis. Our objective was to investigate whether these aphids might be an exploitable resource for other, subdominant, lady beetle species. We compared larval development rate, survival, and adult weight of five lady beetle species in no‐choice experiments with two different strains of A. craccivora, one of which is toxic to H. axyridis and one that is nontoxic. Two lady beetle species, Cycloneda munda and Coleomegilla maculata, were able to complete larval development when feeding on the aphid strain that is toxic to H. axyridis, experiencing only slight developmental delays relative to beetles feeding on the other aphid strain. One species, Coccinella septempunctata, also was able to complete larval development, but experienced a slight reduction in adult weight. The other two lady beetle species, Hippodamia convergens and Anatis labiculata, demonstrated generally low survivorship when consuming A. craccivora, regardless of aphid strain. All five species showed increased survival and/or development relative to H. axyridis on the “toxic” aphid strain. Our results suggest that this toxic trait may act as a narrow‐spectrum defense for the aphids, providing protection against only some lady beetle enemies. For other less‐susceptible lady beetles, these aphids have the potential to provide competitive release from the otherwise dominant H. axyridis.
Collapse
Affiliation(s)
- Kelly A Jackson
- Department of Entomology University of Kentucky Lexington KY USA
| | - Joshua S McCord
- Department of Entomology University of Kentucky Lexington KY USA
| | - Jennifer A White
- Department of Entomology University of Kentucky Lexington KY USA
| |
Collapse
|
19
|
White JA, McCord JS, Jackson KA, Dehnel AC, Lenhart PA. Differential aphid toxicity to ladybeetles is not a function of host plant or facultative bacterial symbionts. Funct Ecol 2016. [DOI: 10.1111/1365-2435.12736] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Jennifer A. White
- Department of Entomology University of Kentucky Lexington KY 40515 USA
| | - Joshua S. McCord
- Department of Entomology University of Kentucky Lexington KY 40515 USA
| | - Kelly A. Jackson
- Department of Entomology University of Kentucky Lexington KY 40515 USA
| | - Allison C. Dehnel
- Department of Entomology University of Kentucky Lexington KY 40515 USA
| | - Paul A. Lenhart
- Department of Entomology University of Kentucky Lexington KY 40515 USA
| |
Collapse
|
20
|
Self JL, Conrad A, Stroika S, Jackson A, Burnworth L, Beal J, Wellman A, Jackson KA, Bidol S, Gerhardt T, Hamel M, Franklin K, Kopko C, Kirsch P, Wise ME, Basler C. Notes from the Field: Outbreak of Listeriosis Associated with Consumption of Packaged Salad - United States and Canada, 2015-2016. MMWR Morb Mortal Wkly Rep 2016; 65:879-81. [PMID: 27559935 DOI: 10.15585/mmwr.mm6533a6] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
In September 2015, PulseNet, the national molecular subtyping network for foodborne disease surveillance, identified a cluster of Listeria monocytogenes (Listeria) clinical isolates indistinguishable by two-enzyme pulsed-field gel electrophoresis (PFGE) pattern combination and highly related by whole-genome multilocus sequence typing (wgMLST). A case was defined as isolation of Listeria with the outbreak PFGE pattern and highly related by wgMLST with an isolation date on or after July 5, 2015, the isolate date of the earliest case in this cluster.
Collapse
|
21
|
Angelo KM, Jackson KA, Wong KK, Hoekstra RM, Jackson BR. Assessment of the Incubation Period for Invasive Listeriosis. Clin Infect Dis 2016; 63:1487-1489. [PMID: 27535950 DOI: 10.1093/cid/ciw569] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 08/04/2016] [Indexed: 12/24/2022] Open
Abstract
We characterized incubation periods among outbreak-associated listeriosis cases, using a simulation model to account for patients with multiple exposure dates. The median was 11 days; 90% of cases occurred within 28 days, and incubation periods varied by clinical manifestation.
Collapse
Affiliation(s)
- Kristina M Angelo
- Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Kelly A Jackson
- Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Karen K Wong
- Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Robert M Hoekstra
- Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Brendan R Jackson
- Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| |
Collapse
|
22
|
Abstract
Botulism had mortality rates >60% before the 1950s. We reviewed confirmed botulism cases in the USA during 1975-2009 including infant, foodborne, wound, and other/unknown acquisition categories, and calculated mortality ratios. We created a multivariate logistic regression model for non-infant cases (foodborne, wound, and other/unknown). Overall mortality was 3.0% with 109 botulism-related deaths among 3,618 botulism cases [18 (<1%) deaths among 2,352 infant botulism cases, 61 (7.1%) deaths among 854 foodborne botulism cases, 18 (5.0%) deaths among 359 wound botulism cases, and 12 (22.6%) deaths among 53 other/unknown botulism cases]. Mortality among all cases increased with age; it was lowest among infants (0.8%) and highest among persons ≥80 years old (34.4%). Toxin type F had higher mortality (13.8%) than types A, B, or E (range, 1.4% to 4.1%). Efforts to reduce botulism mortality should target non-infant transmission categories and older adults.
Collapse
Affiliation(s)
- Kelly A Jackson
- Enteric Diseases Epidemiology Branch, Centers for Disease Control and Prevention, 1600 Clifton Road NE, MS D63, Atlanta, GA 30333, USA
| | - Barbara E Mahon
- Enteric Diseases Epidemiology Branch, Centers for Disease Control and Prevention, 1600 Clifton Road NE, MS D63, Atlanta, GA 30333, USA
| | - John Copeland
- Biostatistics and Information Management Office, Centers for Disease Control and Prevention, 2500 Century Boulevard, MS E33, Atlanta, GA 30345, USA
| | - Ryan P Fagan
- Enteric Diseases Epidemiology Branch, Centers for Disease Control and Prevention, 1600 Clifton Road NE, MS D63, Atlanta, GA 30333, USA
| |
Collapse
|
23
|
Jackson KA, Stroika S, Katz LS, Beal J, Brandt E, Nadon C, Reimer A, Major B, Conrad A, Tarr C, Jackson BR, Mody RK. Use of Whole Genome Sequencing and Patient Interviews To Link a Case of Sporadic Listeriosis to Consumption of Prepackaged Lettuce. J Food Prot 2016; 79:806-9. [PMID: 27296429 PMCID: PMC4910634 DOI: 10.4315/0362-028x.jfp-15-384] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [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] [Indexed: 11/11/2022]
Abstract
We report on a case of listeriosis in a patient who probably consumed a prepackaged romaine lettuce-containing product recalled for Listeria monocytogenes contamination. Although definitive epidemiological information demonstrating exposure to the specific recalled product was lacking, the patient reported consumption of a prepackaged romaine lettuce-containing product of either the recalled brand or a different brand. A multinational investigation found that patient and food isolates from the recalled product were indistinguishable by pulsed-field gel electrophoresis and were highly related by whole genome sequencing, differing by four alleles by whole genome multilocus sequence typing and by five high-quality single nucleotide polymorphisms, suggesting a common source. To our knowledge, this is the first time prepackaged lettuce has been identified as a likely source for listeriosis. This investigation highlights the power of whole genome sequencing, as well as the continued need for timely and thorough epidemiological exposure data to identify sources of foodborne infections.
Collapse
Affiliation(s)
- K A Jackson
- Division of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road N.E., Atlanta, Georgia 30329, USA.
| | - S Stroika
- Division of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road N.E., Atlanta, Georgia 30329, USA
| | - L S Katz
- Division of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road N.E., Atlanta, Georgia 30329, USA
| | - J Beal
- Food and Drug Administration, 10903 New Hampshire Avenue, Silver Spring, Maryland 20993, USA
| | - E Brandt
- Ohio Department of Health Laboratory, 8995 East Main Street, Building 22, Reynoldsburg, Ohio 43068, USA
| | - C Nadon
- National Microbiology Laboratory, Public Health Agency of Canada, 1015 Arlington Street, Winnipeg, Manitoba, Canada R3E 3R2
| | - A Reimer
- National Microbiology Laboratory, Public Health Agency of Canada, 1015 Arlington Street, Winnipeg, Manitoba, Canada R3E 3R2
| | - B Major
- Greater Toronto Area Laboratory, Canadian Food Inspection Agency, 2301 Midland Avenue, Scarborough, Ontario, Canada M1P 4R7
| | - A Conrad
- Division of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road N.E., Atlanta, Georgia 30329, USA; Atlanta Research and Education Foundation, Suite 355, Atlanta, Georgia 30329, USA
| | - C Tarr
- Division of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road N.E., Atlanta, Georgia 30329, USA
| | - B R Jackson
- Division of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road N.E., Atlanta, Georgia 30329, USA
| | - R K Mody
- Division of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention, 1600 Clifton Road N.E., Atlanta, Georgia 30329, USA
| |
Collapse
|
24
|
Jackson BR, Tarr C, Strain E, Jackson KA, Conrad A, Carleton H, Katz LS, Stroika S, Gould LH, Mody RK, Silk BJ, Beal J, Chen Y, Timme R, Doyle M, Fields A, Wise M, Tillman G, Defibaugh-Chavez S, Kucerova Z, Sabol A, Roache K, Trees E, Simmons M, Wasilenko J, Kubota K, Pouseele H, Klimke W, Besser J, Brown E, Allard M, Gerner-Smidt P. Implementation of Nationwide Real-time Whole-genome Sequencing to Enhance Listeriosis Outbreak Detection and Investigation. Clin Infect Dis 2016; 63:380-6. [PMID: 27090985 DOI: 10.1093/cid/ciw242] [Citation(s) in RCA: 229] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 04/07/2016] [Indexed: 12/15/2022] Open
Abstract
Listeria monocytogenes (Lm) causes severe foodborne illness (listeriosis). Previous molecular subtyping methods, such as pulsed-field gel electrophoresis (PFGE), were critical in detecting outbreaks that led to food safety improvements and declining incidence, but PFGE provides limited genetic resolution. A multiagency collaboration began performing real-time, whole-genome sequencing (WGS) on all US Lm isolates from patients, food, and the environment in September 2013, posting sequencing data into a public repository. Compared with the year before the project began, WGS, combined with epidemiologic and product trace-back data, detected more listeriosis clusters and solved more outbreaks (2 outbreaks in pre-WGS year, 5 in WGS year 1, and 9 in year 2). Whole-genome multilocus sequence typing and single nucleotide polymorphism analyses provided equivalent phylogenetic relationships relevant to investigations; results were most useful when interpreted in context of epidemiological data. WGS has transformed listeriosis outbreak surveillance and is being implemented for other foodborne pathogens.
Collapse
Affiliation(s)
| | - Cheryl Tarr
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Errol Strain
- Food and Drug Administration, College Park, Maryland
| | - Kelly A Jackson
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Amanda Conrad
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | | | - Lee S Katz
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Steven Stroika
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - L Hannah Gould
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Rajal K Mody
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Benjamin J Silk
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Jennifer Beal
- Food and Drug Administration, College Park, Maryland
| | - Yi Chen
- Food and Drug Administration, College Park, Maryland
| | - Ruth Timme
- Food and Drug Administration, College Park, Maryland
| | - Matthew Doyle
- Food and Drug Administration, College Park, Maryland
| | - Angela Fields
- Food and Drug Administration, College Park, Maryland
| | - Matthew Wise
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Glenn Tillman
- US Department of Agriculture, Food Safety and Inspection Service, Athens, Georgia
| | | | - Zuzana Kucerova
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Ashley Sabol
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Katie Roache
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Eija Trees
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Mustafa Simmons
- US Department of Agriculture, Food Safety and Inspection Service, Athens, Georgia
| | - Jamie Wasilenko
- US Department of Agriculture, Food Safety and Inspection Service, Athens, Georgia
| | - Kristy Kubota
- Association of Public Health Laboratories, Silver Spring, Maryland
| | | | - William Klimke
- National Institute for Biotechnology Information, National Institutes of Health, Bethesda, Maryland
| | - John Besser
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Eric Brown
- Food and Drug Administration, College Park, Maryland
| | - Marc Allard
- Food and Drug Administration, College Park, Maryland
| | | |
Collapse
|
25
|
Hardyman JEJ, Tyson J, Jackson KA, Aldridge C, Cockell SJ, Wakeling LA, Valentine RA, Ford D. Zinc sensing by metal-responsive transcription factor 1 (MTF1) controls metallothionein and ZnT1 expression to buffer the sensitivity of the transcriptome response to zinc. Metallomics 2016; 8:337-43. [PMID: 26824222 DOI: 10.1039/c5mt00305a] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [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: 11/21/2022]
Abstract
Only a small number of genes are known direct targets of the zinc-responsive transcription factor MTF1; therefore, the aim of this study was to gain a more complete understanding of the MTF-1 regulated zinc-responsive component of the transcriptome. A targeted siRNA was used to deplete MTF1 expression in the human intestinal cell line Caco-2. We predicted that the response to zinc of direct MTF1 target genes would be abrogated by MTF1 knockdown. Surprisingly, a greater number of genes were regulated by zinc following MFT1 knockdown, and most genes that responded to zinc under both control and MTF1-depleted conditions had an augmented response in the latter condition. Exceptions were the zinc effluxer ZnT1 and a suite of metallothionein genes, suggesting that responses of other genes to zinc are usually buffered by increases in these proteins. We propose that MTF1 heads a hierarchy of zinc sensors, and through controlling the expression of a raft of metallothioneins and other key proteins involved in controlling intracellular zinc levels (e.g. ZnT1) alters zinc buffering capacity and total cellular zinc content. We tested and validated this model by overexpressing metallothionein and observing the predicted curtailment in response of the zinc-repressed SLC30A5 (ZnT5) promoter. The model provides the framework for an integrated understanding of cellular zinc homeostasis. Because MTs can bind metals other than zinc, this framework links with overall cellular metal homeostasis.
Collapse
Affiliation(s)
- J E J Hardyman
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle Upon Tyne, NE2 4NN, UK.
| | - J Tyson
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle Upon Tyne, NE2 4NN, UK.
| | - K A Jackson
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle Upon Tyne, NE2 4NN, UK.
| | - C Aldridge
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle Upon Tyne, NE2 4NN, UK.
| | - S J Cockell
- Faculty of Medical Sciences, Newcastle University, Newcastle Upon Tyne, NE2 4NN, UK
| | - L A Wakeling
- School of Dental Sciences, Newcastle University, Newcastle Upon Tyne, NE2 4NN, UK
| | - R A Valentine
- School of Dental Sciences, Newcastle University, Newcastle Upon Tyne, NE2 4NN, UK
| | - D Ford
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle Upon Tyne, NE2 4NN, UK.
| |
Collapse
|
26
|
Abstract
OBJECTIVE Hip pain and injury as a result of activity can lead to the development of early hip osteoarthritis (OA) in susceptible individuals. Our understanding of the factors that increase susceptibility continues to evolve. The ability to clearly identify individuals (and cohorts) with activity-related hip pain who are at risk of early hip OA is currently lacking. The purpose of this study was to gain expert consensus on which key clinical measures might help predict the risk of early hip OA in individuals presenting with activity-related hip pain. The agreed measures would constitute a standardised approach to initial clinical assessment to help identify these individuals. METHODS This Dephi study used online surveys to gain concordance of expert opinion in a structured process of 'rounds'. In this study, we asked 'What outcome measures are useful in predicting hip OA in activity-related hip pain?' The Delphi panel consisted of experts from sport and exercise medicine, orthopaedics, rheumatology, physiotherapy and OA research. RESULTS The study identified key clinical measures in the history, examination and investigations (plain anteroposterior radiograph and femoroacetabular impingement views) that the panel agreed would be useful in predicting future risk of hip OA when assessing activity-related hip pain. The panel also agreed that certain investigations and tests (eg, MR angiography) did not currently have a role in routine assessment. There was a lack of consensus regarding the role of MRI, patient-reported outcome measures (PROMs) and certain biomechanical and functional assessments. CONCLUSIONS We provide a standardised approach to the clinical assessment of patients with activity-related hip pain. Assessment measures rejected by the Delphi panel were newer, more expensive investigations that currently lack evidence. Assessment measures that did not reach consensus include MRI and PROMs. Their role remains ambiguous and would benefit from further research.
Collapse
Affiliation(s)
- K A Jackson
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, University of Oxford, Botnar Research Centre, Oxford, UK
| | - S Glyn-Jones
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, University of Oxford, Botnar Research Centre, Oxford, UK
| | - M E Batt
- Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, Queen's Medical Centre, Nottingham, UK
| | - N K Arden
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, University of Oxford, Botnar Research Centre, Oxford, UK
| | - J L Newton
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, University of Oxford, Botnar Research Centre, Oxford, UK
| |
Collapse
|
27
|
Jackson BR, Salter M, Tarr C, Conrad A, Harvey E, Steinbock L, Saupe A, Sorenson A, Katz L, Stroika S, Jackson KA, Carleton H, Kucerova Z, Melka D, Strain E, Parish M, Mody RK. Notes from the field: listeriosis associated with stone fruit--United States, 2014. MMWR Morb Mortal Wkly Rep 2015; 64:282-3. [PMID: 25789745 PMCID: PMC4584806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
On July 19, 2014, a packing company in California (company A) voluntarily recalled certain lots of stone fruits, including whole peaches, nectarines, plums, and pluots, because of concern about contamination with Listeria monocytogenes based on internal company testing. On July 31, the recall was expanded to cover all fruit packed at their facility during June 1-July 17. After the initial recall, clinicians, state and local health departments, CDC, and the Food and Drug Administration (FDA) received many inquiries about listeriosis from concerned consumers, many of whom had received automated telephone calls informing them that they had purchased recalled fruit. During July 19-31, the CDC Listeria website received >500,000 page views, more than seven times the views received during the previous 52 weeks. However, no molecular information from L. monocytogenes isolates was available to assess whether human illnesses might be linked to these products.
Collapse
Affiliation(s)
- Brendan R. Jackson
- Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, CDC,Corresponding author: Brendan R. Jackson, , 404-639-0536
| | | | - Cheryl Tarr
- Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, CDC
| | - Amanda Conrad
- Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, CDC,Atlanta Research and Education Foundation
| | | | | | | | | | - Lee Katz
- Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, CDC
| | - Steven Stroika
- Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, CDC
| | - Kelly A. Jackson
- Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, CDC
| | - Heather Carleton
- Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, CDC
| | - Zuzana Kucerova
- Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, CDC
| | | | | | | | - Rajal K. Mody
- Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, CDC
| |
Collapse
|
28
|
Choi MJ, Jackson KA, Medus C, Beal J, Rigdon CE, Cloyd TC, Forstner MJ, Ball J, Bosch S, Bottichio L, Cantu V, Melka DC, Ishow W, Slette S, Irvin K, Wise M, Tarr C, Mahon B, Smith KE, Silk BJ. Notes from the field: multistate outbreak of listeriosis linked to soft-ripened cheese--United States, 2013. MMWR Morb Mortal Wkly Rep 2014; 63:294-5. [PMID: 24699767 PMCID: PMC5779354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
On June 27, 2013, the Minnesota Department of Health notified CDC of two patients with invasive Listeria monocytogenes infections (listeriosis) whose clinical isolates had indistinguishable pulsed-field gel electrophoresis (PFGE) patterns. A query of PulseNet, the national molecular subtyping network for foodborne disease surveillance, identified clinical and environmental isolates from other states. On June 28, CDC learned from the Food and Drug Administration's Coordinated Outbreak Response and Evaluation Network that environmental isolates indistinguishable from those of the two patients had been collected from Crave Brothers Farmstead Cheese during 2010-2011. An outbreak-related case was defined as isolation of L. monocytogenes with the outbreak PFGE pattern from an anatomic site that is normally sterile (e.g., blood or cerebrospinal fluid), or from a product of conception, with an isolate upload date during May 20-June 28, 2013. As of June 28, five cases were identified in four states (Minnesota, two cases; Illinois, Indiana, and Ohio, one each). Median age of the five patients was 58 years (range: 31-67 years). Four patients were female, including one who was pregnant at the time of infection. All five were hospitalized. One death and one miscarriage were reported.
Collapse
Affiliation(s)
- Mary J. Choi
- Minnesota Department of Health,EIS officer,Corresponding author: Mary J. Choi, , 651-201-5193
| | - Kelly A. Jackson
- Div of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, CDC
| | | | - Jennifer Beal
- Coordinated Outbreak Response and Evaluation Network, Food and Drug Administration
| | | | - Tami C. Cloyd
- Coordinated Outbreak Response and Evaluation Network, Food and Drug Administration
| | | | - Jill Ball
- Wisconsin Department of Agriculture, Trade, and Consumer Protection
| | - Stacy Bosch
- Div of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, CDC
| | | | | | - David C. Melka
- Center for Food Safety and Applied Nutrition, Food and Drug Administration
| | | | | | - Kari Irvin
- Coordinated Outbreak Response and Evaluation Network, Food and Drug Administration
| | - Matthew Wise
- Div of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, CDC
| | - Cheryl Tarr
- Div of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, CDC
| | - Barbara Mahon
- Div of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, CDC
| | | | - Benjamin J. Silk
- Div of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, CDC
| |
Collapse
|
29
|
McCollum JT, Cronquist AB, Silk BJ, Jackson KA, O'Connor KA, Cosgrove S, Gossack JP, Parachini SS, Jain NS, Ettestad P, Ibraheem M, Cantu V, Joshi M, DuVernoy T, Fogg NW, Gorny JR, Mogen KM, Spires C, Teitell P, Joseph LA, Tarr CL, Imanishi M, Neil KP, Tauxe RV, Mahon BE. Multistate outbreak of listeriosis associated with cantaloupe. N Engl J Med 2013; 369:944-53. [PMID: 24004121 DOI: 10.1056/nejmoa1215837] [Citation(s) in RCA: 252] [Impact Index Per Article: 22.9] [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: 11/19/2022]
Abstract
BACKGROUND Although new pathogen-vehicle combinations are increasingly being identified in produce-related disease outbreaks, fresh produce is a rarely recognized vehicle for listeriosis. We investigated a nationwide listeriosis outbreak that occurred in the United States during 2011. METHODS We defined an outbreak-related case as a laboratory-confirmed infection with any of five outbreak-related subtypes of Listeria monocytogenes isolated during the period from August 1 through October 31, 2011. Multistate epidemiologic, trace-back, and environmental investigations were conducted, and outbreak-related cases were compared with sporadic cases reported previously to the Listeria Initiative, an enhanced surveillance system that routinely collects detailed information about U.S. cases of listeriosis. RESULTS We identified 147 outbreak-related cases in 28 states. The majority of patients (127 of 147, 86%) were 60 years of age or older. Seven infections among pregnant women and newborns and one related miscarriage were reported. Of 145 patients for whom information about hospitalization was available, 143 (99%) were hospitalized. Thirty-three of the 147 patients (22%) died. Patients with outbreak-related illness were significantly more likely to have eaten cantaloupe than were patients 60 years of age or older with sporadic illness (odds ratio, 8.5; 95% confidence interval, 1.3 to ∞). Cantaloupe and environmental samples collected during the investigation yielded isolates matching all five outbreak-related subtypes, confirming that whole cantaloupe produced by a single Colorado farm was the outbreak source. Unsanitary conditions identified in the processing facility operated by the farm probably resulted in contamination of cantaloupes with L. monocytogenes. CONCLUSIONS Raw produce, including cantaloupe, can serve as a vehicle for listeriosis. This outbreak highlights the importance of preventing produce contamination within farm and processing environments.
Collapse
Affiliation(s)
- Jeffrey T McCollum
- Epidemic Intelligence Service, Scientific Education and Professional Development Program Office, Centers for Disease Control and Prevention, Atlanta, USA.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Silk BJ, Mahon BE, Griffin PM, Gould LH, Tauxe RV, Crim SM, Jackson KA, Gerner-Smidt P, Herman KM, Henao OL. Vital signs: Listeria illnesses, deaths, and outbreaks--United States, 2009-2011. MMWR Morb Mortal Wkly Rep 2013; 62:448-52. [PMID: 23739339 PMCID: PMC4604984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
BACKGROUND Older adults, pregnant women, and persons with immunocompromising conditions are at higher risk than others for invasive Listeria monocytogenes infection (listeriosis), a rare and preventable foodborne illness that can cause bacteremia, meningitis, fetal loss, and death. METHODS This report summarizes data on 2009-2011 listeriosis cases and outbreaks reported to U.S. surveillance systems. The Listeria Initiative and PulseNet conduct nationwide surveillance to rapidly detect and respond to outbreaks, the Foodborne Diseases Active Surveillance Network (FoodNet) conducts active, sentinel population-based surveillance to track incidence trends, and the Foodborne Disease Outbreak Surveillance System (FDOSS) receives reports of investigated outbreaks to track foods and settings associated with outbreaks. RESULTS Nationwide, 1,651 cases of listeriosis occurring during 2009-2011 were reported. The case-fatality rate was 21%. Most cases occurred among adults aged ≥65 years (950 [58%]), and 14% (227) were pregnancy-associated. At least 74% of nonpregnant patients aged <65 years had an immunocompromising condition, most commonly immunosuppressive therapy or malignancy. The average annual incidence was 0.29 cases per 100,000 population. Compared with the overall population, incidence was markedly higher among adults aged ≥65 years (1.3; relative rate [RR]: 4.4) and pregnant women (3.0; RR: 10.1). Twelve reported outbreaks affected 224 patients in 38 states. Five outbreak investigations implicated soft cheeses made from pasteurized milk that were likely contaminated during cheese-making (four implicated Mexican-style cheese, and one implicated two other types of cheese). Two outbreaks were linked to raw produce. CONCLUSIONS Almost all listeriosis occurs in persons in higher-risk groups. Soft cheeses were prominent vehicles, but other foods also caused recent outbreaks. Prevention targeting higher-risk groups and control of Listeria monocytogenes contamination in foods implicated by outbreak investigations will have the greatest impact on reducing the burden of listeriosis. IMPLICATIONS FOR PUBLIC HEALTH PRACTICE Careful attention to food safety is especially important to protect vulnerable populations. Surveillance for foodborne infections like listeriosis identifies food safety gaps that can be addressed by industry, regulatory authorities, food preparers, and consumers.
Collapse
|
31
|
Cartwright EJ, Jackson KA, Johnson SD, Graves LM, Silk BJ, Mahon BE. Listeriosis outbreaks and associated food vehicles, United States, 1998-2008. Emerg Infect Dis 2013; 19:1-9; quiz 184. [PMID: 23260661 PMCID: PMC3557980 DOI: 10.3201/eid1901.120393] [Citation(s) in RCA: 234] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Outbreak investigations can identify industrial gaps and regulatory measures to protect food. Listeria monocytogenes, a bacterial foodborne pathogen, can cause meningitis, bacteremia, and complications during pregnancy. This report summarizes listeriosis outbreaks reported to the Foodborne Disease Outbreak Surveillance System of the Centers for Disease Control and Prevention during 1998–2008. The study period includes the advent of PulseNet (a national molecular subtyping network for outbreak detection) in 1998 and the Listeria Initiative (enhanced surveillance for outbreak investigation) in 2004. Twenty-four confirmed listeriosis outbreaks were reported during 1998–2008, resulting in 359 illnesses, 215 hospitalizations, and 38 deaths. Outbreaks earlier in the study period were generally larger and longer. Serotype 4b caused the largest number of outbreaks and outbreak-associated cases. Ready-to-eat meats caused more early outbreaks, and novel vehicles (i.e., sprouts, taco/nacho salad) were associated with outbreaks later in the study period. These changes may reflect the effect of PulseNet and the Listeria Initiative and regulatory initiatives designed to prevent contamination in ready-to-eat meat and poultry products.
Collapse
|
32
|
Ibraheem M, Vance S, Jackson KA, Ettestad P, Smelser C, Silk B. Vision Loss following Intraocular Listeriosis Associated with Contaminated Cantaloupe. Case Rep Ophthalmol 2013; 4:7-11. [PMID: 23898285 PMCID: PMC3725015 DOI: 10.1159/000351858] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Intraocular listeriosis, a rare manifestation of invasive listeriosis, has a poor visual prognosis. We report an intraocular listeriosis case related to a multistate outbreak associated with contaminated cantaloupe. Increasing awareness of rare listeriosis presentations might facilitate timely diagnosis and treatment, and case reporting can clarify medical and epidemiologic aspects of listeriosis.
Collapse
Affiliation(s)
- Mam Ibraheem
- Epidemic Intelligence Service, USA ; New Mexico Department of Health, Santa Fe, N. Mex., USA
| | | | | | | | | | | |
Collapse
|
33
|
Silk BJ, Date KA, Jackson KA, Pouillot R, Holt KG, Graves LM, Ong KL, Hurd S, Meyer R, Marcus R, Shiferaw B, Norton DM, Medus C, Zansky SM, Cronquist AB, Henao OL, Jones TF, Vugia DJ, Farley MM, Mahon BE. Invasive listeriosis in the Foodborne Diseases Active Surveillance Network (FoodNet), 2004-2009: further targeted prevention needed for higher-risk groups. Clin Infect Dis 2012; 54 Suppl 5:S396-404. [PMID: 22572660 DOI: 10.1093/cid/cis268] [Citation(s) in RCA: 151] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Listeriosis can cause severe disease, especially in fetuses, neonates, older adults, and persons with certain immunocompromising and chronic conditions. We summarize US population-based surveillance data for invasive listeriosis from 2004 through 2009. METHODS We analyzed Foodborne Diseases Active Surveillance Network (FoodNet) data for patients with Listeria monocytogenes isolated from normally sterile sites. We describe the epidemiology of listeriosis, estimate overall and specific incidence rates, and compare pregnancy-associated and nonpregnancy-associated listeriosis by age and ethnicity. RESULTS A total of 762 listeriosis cases were identified during the 6-year reporting period, including 126 pregnancy-associated cases (17%), 234 nonpregnancy-associated cases(31%) in patients aged <65 years, and 400 nonpregnancy-associated cases (53%) in patients aged ≥ 65 years. Eighteen percent of all cases were fatal. Meningitis was diagnosed in 44% of neonates. For 2004-2009, the overall annual incidence of listeriosis varied from 0.25 to 0.32 cases per 100,000 population. Among Hispanic women, the crude incidence of pregnancy-associated listeriosis increased from 5.09 to 12.37 cases per 100,000 for the periods of 2004-2006 and 2007-2009, respectively; among non-Hispanic women, pregnancy-associated listeriosis increased from 1.74 to 2.80 cases per 100,000 for the same periods. Incidence rates of nonpregnancy-associated listeriosis in patients aged ≥ 65 years were 4-5 times greater than overall rates annually. CONCLUSIONS Overall listeriosis incidence did not change significantly from 2004 through 2009. Further targeted prevention is needed, including food safety education and messaging (eg, avoiding Mexican-style cheese during pregnancy). Effective prevention among pregnant women, especially Hispanics, and older adults would substantially affect overall rates.
Collapse
Affiliation(s)
- Benjamin J Silk
- Division of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention Atlanta, Georgia, USA.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
34
|
Coneyworth LJ, Jackson KA, Tyson J, Bosomworth HJ, van der Hagen E, Hann GM, Ogo OA, Swann DC, Mathers JC, Valentine RA, Ford D. Identification of the human zinc transcriptional regulatory element (ZTRE): a palindromic protein-binding DNA sequence responsible for zinc-induced transcriptional repression. J Biol Chem 2012; 287:36567-81. [PMID: 22902622 DOI: 10.1074/jbc.m112.397000] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Many genes with crucial roles in zinc homeostasis in mammals respond to fluctuating zinc supply through unknown mechanisms, and uncovering these mechanisms is essential to understanding the process at cellular and systemic levels. We detected zinc-dependent binding of a zinc-induced protein to a specific sequence, the zinc transcriptional regulatory element (ZTRE), in the SLC30A5 (zinc transporter ZnT5) promoter and showed that substitution of the ZTRE abrogated the repression of a reporter gene in response to zinc. We identified the ZTRE in other genes, including (through an unbiased search) the CBWD genes and (through targeted analysis) in multiple members of the SLC30 family, including SLC30A10, which is repressed by zinc. The function of the CBWD genes is currently unknown, but roles for homologs in metal homeostasis are being uncovered in bacteria. We demonstrated that CBWD genes are repressed by zinc and that substitution of the ZTRE in SLC30A10 and CBWD promoter-reporter constructs abrogates this response. Other metals did not affect expression of the transcriptional regulator, binding to the ZTRE or promoter-driven reporter gene expression. These findings provide the basis for elucidating how regulation of a network of genes through this novel mechanism contributes to zinc homeostasis and how the cell orchestrates this response.
Collapse
Affiliation(s)
- Lisa J Coneyworth
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne NE2 4NN, United Kingdom
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Heller MC, Watson JL, Blanchard MT, Jackson KA, Stott JL, Tsolis RM. Characterization of Brucella abortus infection of bovine monocyte-derived dendritic cells. Vet Immunol Immunopathol 2012; 149:255-61. [PMID: 22884262 DOI: 10.1016/j.vetimm.2012.07.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Revised: 07/09/2012] [Accepted: 07/17/2012] [Indexed: 01/18/2023]
Abstract
Brucella abortus is a Gram negative facultative intracellular pathogen of cattle, and an important zoonosis in humans worldwide. Previous studies have shown that dendritic cells (DC) from humans and mice are highly permissive for Brucella survival and proliferation. Impairment of DC activation and maturation by Brucella infection has also been reported in these two species. The aim of this study was to characterize infection of bovine DC with B. abortus. Monocyte-derived DC (mdDC) were cultured from bovine peripheral blood mononuclear cells (PBMC) using the recombinant bovine cytokines IL-4 and GM-CSF. The resulting mdDC were DEC205(+), MHC class II(hi). Approximately 70% of the cultured cells were DEC205(+), MHC II(+). MdDC were infected with B. abortus strain 2308 at an MOI of 1 and 100. Parallel infection experiments were performed in monocyte derived macrophages (mdM) isolated from the same subjects. Bacteria were successfully killed by mdDC by 24 hours post infection (PI) with high and low dose of B. abortus, bacteria persisted in mdM infected with a high dose. Expression of IL-1b, IL-6, IL-10, IL-12p40, IFNγ, iNOS and TNFα in B. abortus infected and LPS stimulated mdDC at 6 and 24 hours PI were evaluated using RT-qPCR. At 6 hours PI all transcripts were increased over control cells and significantly less IL-10, IL-12p40, and IFNγ were expressed in mdDC infected with B. abortus compared to LPS stimulation. Evaluation of mdDC cultures by flow cytometry was performed. Flow cytometric analysis of infected and LPS stimulated mdDC 24 hours PI showed expression of CD80 and CD86 was impaired in two of the three animals analyzed. MHC class II expression was equivocal between the groups. From these results we conclude that cultured bovine mdDC are not permissive for intracellular proliferation of B. abortus, and infected mdDC exhibit some signs of maturational and activational impairment.
Collapse
Affiliation(s)
- M C Heller
- Department of Veterinary Medicine and Epidemiology, University of California Davis, One Shields Ave, Davis, CA 95616, USA.
| | | | | | | | | | | |
Collapse
|
36
|
Pouillot R, Hoelzer K, Jackson KA, Henao OL, Silk BJ. Relative Risk of Listeriosis in Foodborne Diseases Active Surveillance Network (FoodNet) Sites According to Age, Pregnancy, and Ethnicity. Clin Infect Dis 2012; 54 Suppl 5:S405-10. [DOI: 10.1093/cid/cis269] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
|
37
|
Jackson KA, Biggerstaff M, Tobin-D'Angelo M, Sweat D, Klos R, Nosari J, Garrison O, Boothe E, Saathoff-Huber L, Hainstock L, Fagan RP. Multistate outbreak of Listeria monocytogenes associated with Mexican-style cheese made from pasteurized milk among pregnant, Hispanic women. J Food Prot 2011; 74:949-53. [PMID: 21669072 DOI: 10.4315/0362-028x.jfp-10-536] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Listeriosis is a severe infection caused by Listeria monocytogenes. Since 2004, the Centers for Disease Control and Prevention has requested that listeriosis patients be interviewed using a standardized Listeria Initiative (LI) questionnaire. In January 2009, states and the Centers for Disease Control and Prevention began investigating a multistate outbreak of listeriosis among pregnant, Hispanic women. We defined a case as an illness occurring between October 2008 and March 2009 with an L. monocytogenes isolate indistinguishable from the outbreak strain by pulsed-field gel electrophoresis. We conducted a multistate case-control study using controls that were selected from L. monocytogenes illnesses in non-outbreak-related pregnant, Hispanic women that were reported to the LI during 2004 to 2008. Eight cases in five states were identified. Seven of these were pregnant, Hispanic females aged 21 to 43 years, and one was a 3-year-old Hispanic girl, who was excluded from the study. Seven (100%) cases but only 26 (60%) of 43 controls had consumed Mexican-style cheese in the month before illness (odds ratio, 5.89; 95% confidence interval, 1.07 to ∞; P = 0.04). Cultures of asadero cheese made from pasteurized milk collected at a manufacturing facility during routine sampling by the Michigan Department of Agriculture on 23 February 2009 yielded the outbreak strain, leading to a recall of cheeses produced in the plant. Recalled product was traced to stores where at least three of the women had purchased cheese. This investigation highlights the usefulness of routine product sampling for identifying contaminated foods, of pulsed-field gel electrophoresis analysis to detect multistate outbreaks, and of the LI for providing timely exposure information for case-control analyses. Recalls of contaminated cheeses likely prevented additional illnesses.
Collapse
Affiliation(s)
- K A Jackson
- Enteric Diseases Epidemiology Branch, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Heller MC, Drew CP, Jackson KA, Griffey S, Watson JL. A potential role for indoleamine 2,3-dioxygenase (IDO) in Rhodococcus equi infection. Vet Immunol Immunopathol 2010; 138:174-82. [PMID: 20739070 DOI: 10.1016/j.vetimm.2010.07.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2009] [Revised: 07/06/2010] [Accepted: 07/12/2010] [Indexed: 12/20/2022]
Abstract
Rhodococcus equi is a facultative intracellular bacterial pathogen of foals and immunocompromised humans that infects and proliferates within host macrophages and dendritic cells (DC). Indoleamine 2,3-dioxygenase (IDO), the initial enzyme in the tryptophan catabolism pathway, is upregulated in R. equi infected equine monocyte-derived DC and alveolar macrophages. Tryptophan requirement of R. equi for extracellular and intracellular growth was assessed. Growth of R. equi in minimal media did not require tryptophan and pharmacologic inhibition of IDO had no effect on intracellular proliferation of R. equi in equine alveolar macrophages. To investigate an immune-regulatory role for INDO in R. equi infection, IDO(-/-) (B6.129-(Indotm1Alm)/J) (n=22) and strain matched control (C57BL/6J) (n=20) mice were infected with R. equi by intraperitoneal injection, for 3 and 6 days. There was no difference in bacterial counts in liver or spleen between the two groups. Histological sections of liver and spleen were assigned inflammation scores and RT-PCR for interferon-gamma (IFNγ), tumor necrosis factor-alpha (TNFα), IL-4, IL-6, IL-10, IL-12, IL-23, forkhead box P3 (FoxP3), and transforming growth factor-beta (TGFβ) was performed on liver and spleen. Liver tissue of IDO(-/-) had higher inflammation scores at 6 days post-infection (PI) (P=0.05) and had decreased expression of TGFβ at 3 days PI (P=0.01), and FOXP3 at 3 days (P=0.02) and 6 days (P=0.03) compared to control mice. Immunostaining for FOXP3 showed lower numbers of FOXP3+ regulatory T cells in liver of IDO(-/-) mice 6 days PI. Prolonged inflammation in the liver tissue of IDO(-/-) mice corresponded with lower expression of FOXP3 and TGFβ in that tissue, and also with lower numbers of FOXP3+ regulatory T cells. We conclude that IDO expression by activated macrophages and DC plays a role in dampening the inflammatory response to R. equi infection in mice.
Collapse
MESH Headings
- Actinomycetales Infections/enzymology
- Actinomycetales Infections/immunology
- Actinomycetales Infections/veterinary
- Animals
- Cytokines/metabolism
- Dendritic Cells/enzymology
- Dendritic Cells/immunology
- Female
- Horse Diseases/enzymology
- Horse Diseases/immunology
- Horses
- In Vitro Techniques
- Indoleamine-Pyrrole 2,3,-Dioxygenase/deficiency
- Indoleamine-Pyrrole 2,3,-Dioxygenase/genetics
- Indoleamine-Pyrrole 2,3,-Dioxygenase/immunology
- Liver/immunology
- Macrophages, Alveolar/enzymology
- Macrophages, Alveolar/immunology
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Rhodococcus equi
- Spleen/immunology
- T-Lymphocytes, Regulatory/immunology
Collapse
Affiliation(s)
- M C Heller
- Dept. of Veterinary Medicine and Epidemiology, University of California Davis, One Shields Ave., Davis, CA 95616, USA.
| | | | | | | | | |
Collapse
|
39
|
Heller MC, Jackson KA, Watson JL. Identification of immunologically relevant genes in mare and foal dendritic cells responding to infection by Rhodococcus equi. Vet Immunol Immunopathol 2010; 136:144-50. [PMID: 20334935 DOI: 10.1016/j.vetimm.2010.02.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2009] [Revised: 01/05/2010] [Accepted: 02/22/2010] [Indexed: 11/25/2022]
Abstract
Rhodococcus equi is a facultative intracellular bacterial pathogen of horses; infected foals develop pyogranulomatous pneumonia, however adult horses are largely unaffected. R. equi infects and proliferates within host macrophages and dendritic cells (DCs). DCs initiate the appropriate adaptive immune response, thereby playing a critical role in determining the outcome of infection. Our aim was to identify genes that are differentially expressed in R. equi infected monocyte-derived DCs (mdDCs). Peripheral blood monocytes from mares and foals were used to derive mdDCs by culturing with recombinant equine IL-4 and recombinant human GM-CSF. RNA harvested 24h after infection with R. equi (ATCC 33701+) was used to perform suppression subtractive hybridization (SSH) experiments. Approximately 38 unique sequences were obtained from these experiments. Differential expression of 19 immunologically relevant genes was validated by PCR. These genes are characterized by the following functions: cell adhesion, chemotaxis/migration, immune/inflammatory response, ion transport, signal transduction, T-cell regulation, and vesicular transport. In summary, we identified several novel genes that are differentially expressed in foal and adult mdDCs in response to R. equi infection. These genes provide promising targets for further research into the host response to R. equi, and the susceptibility of foals to this disease.
Collapse
Affiliation(s)
- M C Heller
- Dept. of Veterinary Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA.
| | | | | |
Collapse
|
40
|
Emami K, Topakas E, Nagy T, Henshaw J, Jackson KA, Nelson KE, Mongodin EF, Murray JW, Lewis RJ, Gilbert HJ. Regulation of the xylan-degrading apparatus of Cellvibrio japonicus by a novel two-component system. J Biol Chem 2008; 284:1086-96. [PMID: 18922794 DOI: 10.1074/jbc.m805100200] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The microbial degradation of lignocellulose biomass is not only an important biological process but is of increasing industrial significance in the bioenergy sector. The mechanism by which the plant cell wall, an insoluble composite structure, activates the extensive repertoire of microbial hydrolytic enzymes required to catalyze its degradation is poorly understood. Here we have used a transposon mutagenesis strategy to identify a genetic locus, consisting of two genes that modulate the expression of xylan side chain-degrading enzymes in the saprophytic bacterium Cellvibrio japonicus. Significantly, the locus encodes a two-component signaling system, designated AbfS (sensor histidine kinase) and AbfR (response regulator). The AbfR/S two-component system is required to activate the expression of the suite of enzymes that remove the numerous side chains from xylan, but not the xylanases that hydrolyze the beta1,4-linked xylose polymeric backbone of this polysaccharide. Studies on the recombinant sensor domain of AbfS (AbfS(SD)) showed that it bound to decorated xylans and arabinoxylo-oligosaccharides, but not to undecorated xylo-oligosaccharides or other plant structural polysaccharides/oligosaccharides. The crystal structure of AbfS(SD) was determined to a resolution of 2.6A(.) The overall fold of AbfS(SD) is that of a classical Per Arndt Sim domain with a central antiparallel four-stranded beta-sheet flanked by alpha-helices. Our data expand the number of molecules known to bind to the sensor domain of two-component histidine kinases to include complex carbohydrates. The biological rationale for a regulatory system that induces enzymes that remove the side chains of xylan, but not the hydrolases that cleave the backbone of the polysaccharide, is discussed.
Collapse
Affiliation(s)
- Kaveh Emami
- Institute for Cell and Molecular Biosciences, Newcastle University, The Medical School, Framlington Place, Newcastle-upon-Tyne, NE2 4HH, United Kingdom
| | | | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Valentine RA, Jackson KA, Christie GR, Mathers JC, Taylor PM, Ford D. ZnT5 Variant B Is a Bidirectional Zinc Transporter and Mediates Zinc Uptake in Human Intestinal Caco-2 Cells. J Biol Chem 2007; 282:14389-93. [PMID: 17355957 DOI: 10.1074/jbc.m701752200] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Zinc is an essential micronutrient, so it is important to elucidate the molecular mechanisms of zinc homeostasis, including the functional properties of zinc transporters. Mammalian zinc transporters are classified in two major families: the SLC30 (ZnT) family and the SLC39 family. The prevailing view is that SLC30 family transporters function to reduce cytosolic zinc concentration, either through efflux across the plasma membrane or through sequestration in intracellular compartments, and that SLC39 family transporters function in the opposite direction to increase cytosolic zinc concentration. We demonstrated that human ZnT5 variant B (ZnT5B (hZTL1)), an isoform expressed at the plasma membrane, operates in both the uptake and the efflux directions when expressed in Xenopus laevis oocytes. We measured increased activity of the zinc-responsive metallothionein 2a (MT2a) promoter when ZnT5b was co-expressed with an MT2a promoter-reporter plasmid construct in human intestinal Caco-2 cells, indicating increased total intracellular zinc concentration. Increased cytoplasmic zinc concentration mediated by ZnT5B, in the absence of effects on intracellular zinc sequestration by the Golgi apparatus or endoplasmic reticulum, was also confirmed by a dramatically enhanced signal from the zinc fluorophore Rhodzin-3 throughout the cytoplasm of Caco-2 cells overexpressing ZnT5B at the plasma membrane when compared with control cells. Our findings demonstrate clearly that, in addition to mediating zinc efflux, ZnT5B at the plasma membrane can function to increase cytoplasmic zinc concentration, thus indicating a need to reevaluate the current paradigm that SLC30 family zinc transporters operate exclusively to decrease cytosolic zinc concentration.
Collapse
Affiliation(s)
- Ruth A Valentine
- The Human Nutrition Research Centre, School of Dental Sciences, Institute for Cell and Molecular Biosciences, School of Clinical Medical Sciences, Newcastle University, Newcastle upon Tyne, UK.
| | | | | | | | | | | |
Collapse
|
42
|
Helston RM, Phillips SR, McKay JA, Jackson KA, Mathers JC, Ford D. Zinc Transporters in the Mouse Placenta Show a Coordinated Regulatory Response to Changes in Dietary Zinc Intake. Placenta 2007; 28:437-44. [PMID: 16914197 DOI: 10.1016/j.placenta.2006.07.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2005] [Revised: 06/08/2006] [Accepted: 07/03/2006] [Indexed: 11/21/2022]
Abstract
The aim of the study was to determine if the expression of zinc transporters in the mouse placenta is regulated by dietary zinc, commensurate with regulating the supply of zinc to the fetus. Mice were fed diets differing only in the concentration of zinc (moderately zinc-restricted (ZnR)--15 mg Zn/kg; zinc-adequate (ZnA)--50 mg Zn/kg; zinc-supplemented (ZnS)--150 mg Zn/kg) from the onset of pregnancy until collection of tissue at day 17. Compared with mice fed the other diets, fetal weight was reduced in the ZnR group and total non-embryonic weight gain was reduced in mice fed the ZnS diet. Transcript levels of metallothionein and the zinc transporters ZnT1, ZnT4 and ZIP1 were reduced in the placenta of mice fed both the ZnR and ZnS diets compared with mice fed the ZnA diet. Placental ZnT7 and fetal liver metallothionein transcript levels did not differ significantly between mice fed the three diets and placental ZnT5 was reduced in mice fed the ZnS compared with the ZnA diet but did not differ significantly between the ZnA and ZnR diets. The pattern of mRNA expression in placenta was reflected at the protein level for ZnT1. Levels of ZnT5 protein were also highest in mice fed the ZnA diet. Both ZnT1 and ZnT5 were detected in the human villous syncytiotrophoblast by immunohistochemistry. The data indicate that the expression of zinc transporters in mouse placenta is responsive to dietary zinc supply but this modulation of expression is insufficient to maintain optimum fetal nutrition at even a modest level of dietary zinc restriction.
Collapse
Affiliation(s)
- R M Helston
- Institute for Cell and Molecular Biosciences, Human Nutrition Research Centre, University of Newcastle, Medical School, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | | | | | | | | | | |
Collapse
|
43
|
Thomson CA, Newton TR, Graver EJ, Jackson KA, Reid PM, Hartz VL, Cussler EC, Hakim IA. Cruciferous vegetable intake questionnaire improves cruciferous vegetable intake estimates. ACTA ACUST UNITED AC 2007; 107:631-43. [PMID: 17383269 DOI: 10.1016/j.jada.2007.01.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [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] [Received: 10/07/2005] [Indexed: 10/23/2022]
Abstract
OBJECTIVE To develop a validated, focused Cruciferous Vegetable Food Frequency Questionnaire (FFQ) as an assessment tool for specific quantification of dietary cruciferous vegetable exposure. DESIGN/METHODS Participants (n=107; 18 to 76 years old) completed a standard FFQ and the Cruciferous Vegetable FFQ twice over a 2-week period. Repeat dietary recalls were collected on 3 days over the same 2-week period. Urinary dithiocarbamate was determined as a biomarker of cruciferous vegetable intake. STATISTICAL ANALYSES Descriptive statistics of intake; paired t tests and sign tests for comparison of intake estimates between instruments; Spearman correlations to assess reliability and associations between diet instruments and urinary dithiocarbamate. RESULTS Cruciferous vegetable intake was significantly correlated between the two FFQs (r(s)=0.58), although the Cruciferous Vegetable FFQ estimated intake 35 g higher than the standard FFQ. The Cruciferous Vegetable FFQ was reliable, with a repeated measures correlation of 0.69 (P</=0.01). Urinary dithiocarbamate excretion correlated with cruciferous vegetable intake from the Cruciferous Vegetable FFQ (r(s)=0.26, P<0.01), and from the standard FFQ (r(s)=0.19, P=0.06). CONCLUSIONS The Cruciferous Vegetable FFQ provided a reproducible, valid estimate of cruciferous vegetable exposure and improved the relationship between crucifer consumption and urinary dithiocarbamate, a biomarker of cruciferous vegetable exposure. The nearly twofold difference in exposure estimates between the Cruciferous Vegetable FFQ and the standard FFQ could change the statistical significance of risk estimates in the context of epidemiological research. This questionnaire is an appropriate research tool to evaluate cruciferous vegetable intake more accurately than a standard FFQ, particularly in the context of dietary intervention studies that promote increased vegetable intake to reduce the risk for chronic disease.
Collapse
Affiliation(s)
- Cynthia A Thomson
- Department of Nutritional Sciences, The University of Arizona, Tucson 85721-0038, USA.
| | | | | | | | | | | | | | | |
Collapse
|
44
|
Jackson KA, Helston RM, McKay JA, O'Neill ED, Mathers JC, Ford D. Splice Variants of the Human Zinc Transporter ZnT5 (SLC30A5) Are Differentially Localized and Regulated by Zinc through Transcription and mRNA Stability. J Biol Chem 2007; 282:10423-31. [PMID: 17234632 DOI: 10.1074/jbc.m610535200] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Maintenance of cellular zinc homeostasis includes regulating the expression of cell membrane zinc transporters. Knowledge about the mechanisms underlying changes in mammalian zinc transporter mRNA abundance is poor. We demonstrated that when expressed in Chinese hamster ovary cells as N-terminal fusions to green fluorescent protein, two splice variants of ZnT5 adopt different subcellular locations (either in the Golgi apparatus or throughout the cell, including at the plasma membrane) indicating discrete roles in cellular zinc homeostasis. We demonstrated, using a beta-galactosidase reporter gene, that both splice variants were expressed from a promoter region that was transcriptionally repressed by increased extracellular zinc (150 microM compared with 3 mum; approximately 40%) and by extracellular zinc depletion, using the chelator N,N,N',N'-tetrakis(2-pyridylmethyl) ethylenediamine ( approximately 20%). We mapped the zinc-responsive element to the region -154 to +50, relative to the predicted start of transcription, and showed that a consensus metal response element sequence (-410 to -404) was not responsible for these effects. Changes in ZnT5 mRNA abundance in Caco-2 cells at different zinc concentrations were in parallel to the changes in promoter activity ( approximately 40% reduction at 150 microM zinc) but in the presence of actinomycin D, to prevent transcription, we observed a marked stabilization (1.7-2-fold accumulation over 24 h) of ZnT5 mRNA. We conclude that effects of zinc on ZnT5 transcription and mRNA stability act in opposition to balance mRNA abundance for cellular zinc homeostasis. To our knowledge, this is the first report that zinc affects the stability of a transcript with a direct role in cellular zinc homeostasis.
Collapse
Affiliation(s)
- Kelly A Jackson
- Human Nutrition Research Centre, Institute for Cell and Molecular Biosciences, Medical School, Newcastle University, Newcastle upon Tyne NE2 4NN, United Kingdom
| | | | | | | | | | | |
Collapse
|
45
|
Abstract
OBJECTIVE To determine the minimum number of days of dietary intake interviews required to reduce the effects of random error (day-to-day variability in dietary intake) when using the multiple-pass, multiple-day, 24-h recall method. DESIGN Cross-sectional study. SETTING University research department. SUBJECTS A total of 50 healthy non-smoking overweight and obese (body mass index=26-40 kg/m2) adult men and women aged 39-45 years completed the study. Participants were randomly selected from volunteers for a larger unrelated study. INTERVENTIONS Each participant completed 10, multiple-pass, 24-h recall interviews on randomly chosen days over 4 weeks. The minimum number of record days was determined for each macronutrient (carbohydrate, fat, protein) and energy, for each gender, to obtain a 'true' (unobservable) representative intake from reported (observed) dietary intakes. RESULTS The greatest number of days required to obtain a 'true' representative intake was 8 days. Carbohydrate intakes required the greatest number of days of dietary record among males (7 days), whereas protein required the greatest number of days among females (8 days) in this cohort. Sunday was the day of the week that showed greatest variability in macronutrient intakes. Protein (P<0.05) and fat (P<0.001) intakes were significantly more variable than carbohydrate on Sundays compared with weekdays, for both men and women. CONCLUSION A logistically achievable 8 days of dietary intake interviews was sufficient to minimize the effect of random error when using the multiple-pass, 24-h recall dietary intake method. Sunday should be included among the dietary interview days to ensure a 'true' representation of macronutrient intakes. This method can be confidently applied to small cohort studies in which dietary intakes from different groups are to be compared or to investigations of associations between nutrient intakes and disease.
Collapse
Affiliation(s)
- K A Jackson
- School of Health Sciences, University of South Australia, Adelaide, Australia.
| | | | | | | |
Collapse
|
46
|
Yang M, Jackson KA, Jellinek J. First-principles study of intermediate size silver clusters: Shape evolution and its impact on cluster properties. J Chem Phys 2006; 125:144308. [PMID: 17042591 DOI: 10.1063/1.2351818] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Low-energy isomers of Ag(N) clusters are studied within gradient-corrected density functional theory over the size range of N = 9-20. The candidate conformations are drawn from an extensive structural database created in a recent exploration of Cu(N) clusters [M. Yang et al., J. Chem. Phys. 124, 24308 (2006)]. Layered configurations dominate the list of the lowest-energy isomers of Ag(N) for N < 16. The most stable structures for N > 16 are compact with quasispherical shapes. The size-driven shape evolution is similar to that found earlier for Na(N) and Cu(N). The shape change has a pronounced effect on the cluster cohesive energies, ionization potentials, and polarizabilities. The properties computed for the most stable isomers of Ag(N) are in good agreement with the available experimental data.
Collapse
Affiliation(s)
- M Yang
- Physics Department, Central Michigan University, Mt. Pleasant, Michigan 48859, USA
| | | | | |
Collapse
|
47
|
Abstract
We investigate the structures and magnetic properties of small Mn(n) clusters in the size range of 2-13 atoms using first-principles density functional theory. We arrive at the lowest energy structures for clusters in this size range by simultaneously optimizing the cluster geometries, total spins, and relative orientations of individual atomic moments. The results for the net magnetic moments for the optimal clusters are in good agreement with experiment. The magnetic behavior of Mn(n) clusters in the size range studied in this work ranges from ferromagnetic ordering (large net cluster moment) for the smallest (n=2, 3, and 4) clusters to a near degeneracy between ferromagnetic and antiferromagnetic solutions in the vicinity of n=5 and 6 to a clear preference for antiferromagnetic (small net cluster moment) ordering at n=7 and beyond. We study the details of this evolution and present a picture in which bonding in these clusters predominantly occurs due to a transfer of electrons from antibonding 4s levels to minority 3d levels.
Collapse
Affiliation(s)
- P Bobadova-Parvanova
- Department of Physics, Central Michigan University, Mount Pleasant, MI 48859, USA
| | | | | | | |
Collapse
|
48
|
Caraceni A, Martini C, Zecca E, Portenoy RK, Ashby MA, Hawson G, Jackson KA, Lickiss N, Muirden N, Pisasale M, Moulin D, Schulz VN, Rico Pazo MA, Serrano JA, Andersen H, Henriksen HT, Mejholm I, Sjogren P, Heiskanen T, Kalso E, Pere P, Poyhia R, Vuorinen E, Tigerstedt I, Ruismaki P, Bertolino M, Larue F, Ranchere JY, Hege-Scheuing G, Bowdler I, Helbing F, Kostner E, Radbruch L, Kastrinaki K, Shah S, Vijayaram S, Sharma KS, Devi PS, Jain PN, Ramamani PV, Beny A, Brunelli C, Maltoni M, Mercadante S, Plancarte R, Schug S, Engstrand P, Ovalle AF, Wang X, Alves MF, Abrunhosa MR, Sun WZ, Zhang L, Gazizov A, Vaisman M, Rudoy S, Gomez Sancho M, Vila P, Trelis J, Chaudakshetrin P, Koh MLJ, Van Dongen RTM, Vielvoye-Kerkmeer A, Boswell MV, Elliott T, Hargus E, Lutz L. Breakthrough pain characteristics and syndromes in patients with cancer pain. An international survey. Palliat Med 2004; 18:177-83. [PMID: 15198130 DOI: 10.1191/0269216304pm890oa] [Citation(s) in RCA: 219] [Impact Index Per Article: 11.0] [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: 11/05/2022]
Abstract
Breakthrough pain (BKP) is a transitory flare of pain that occurs on a background of relatively well controlled baseline pain. Previous surveys have found that BKP is highly prevalent among patients with cancer pain and predicts more severe pain, pain-related distress and functional impairment, and relatively poor quality of life. An international group of investigators assembled by a task force of the International Association for the Study of Pain (IASP) evaluated the prevalence and characteristics of BKP as part of a prospective, cross-sectional survey of cancer pain. Fifty-eight clinicians in 24 countries evaluated a total of 1095 patients with cancer pain using patient-rated items from the Brief Pain Inventory (BPI) and observer-rated measures. The observer-rated information included demographic and tumor-related data, the occurrence of BKP, and responses on checklists of pain syndromes and pathophysiologies. The clinicians reported BKP in 64.8% of patients. Physicians from English-speaking countries were significantly more likely to report BKP than other physicians. BKP was associated with higher pain scores and functional interference on the BPI. Multivariate analysis showed an independent association of BKP with the presence of more than one pain, a vertebral pain syndrome, pain due to plexopathy, and English-speaking country. These data confirm the high prevalence of BKP, its association with more severe pain and functional impairment, and its relationship to specific cancer pain syndromes. Further studies are needed to characterize subtypes of BKP. The uneven distribution of BKP reporting across pain specialists from different countries suggests that more standardized methods for diagnosing BKP are needed.
Collapse
Affiliation(s)
- Augusto Caraceni
- Neurology Unit-Pain Therapy and Palliative Care Unit, National Cancer Institute of Milan, Via Venezian 1, Milan, Italy.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Solberg OD, Jackson KA, Millon LV, Stott JL, Vandenplas ML, Moore JN, Watson JL. Genomic characterization of equine Interleukin-4 receptor α-chain (IL4R). Vet Immunol Immunopathol 2004; 97:187-94. [PMID: 14741137 DOI: 10.1016/j.vetimm.2003.09.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [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: 11/21/2022]
Abstract
Three overlapping fragments of the equine interleukin-4 receptor alpha chain gene (IL4R) were cloned and sequenced. The resulting 3553 bp cDNA sequence exhibited homology to human, murine and bovine IL4R. The equine IL4R exhibits many conserved features when compared to other species, including intron-exon boundary positions and amino acid sequence motifs characteristic of type I cytokine receptors. The IL4R gene was localized to horse chromosome ECA13 by synteny mapping on a somatic cell hybrid panel. Evidence for an alternative splice variant of IL4R was found in the genomic sequence and subsequently verified using RT-PCR on equine monocyte RNA. A polymorphism screen of the largest exon, homologous to exon 12 of the human IL4R gene, was performed using DNA from 60 horses of various breeds which yielded 11 coding-region single nucleotide polymorphisms (SNPs), 7 synonymous and 4 non-synonymous. Three of the four non-synonymous SNPs occur at high frequencies and are found very near a conserved tyrosine residue.
Collapse
Affiliation(s)
- O D Solberg
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California at Davis, Davis, CA 95616, USA
| | | | | | | | | | | | | |
Collapse
|
50
|
Affiliation(s)
- G G Wulf
- Center for Cell and Gene Therapy, Baylor College of Medicine, Houston, Tex., 77030, USA
| | | | | |
Collapse
|