1
|
Groenewald P, Kallis N, Holmgren C, Glass T, Anthony A, Maud P, Akhalwaya Y, Afonso E, Niewoudt I, Martin LJ, De Vaal C, Cheyip M, Morof D, Prinsloo M, Matzopoulos R, Bradshaw D. Further evidence of misclassification of the injury deaths in South Africa: When will the barriers to accurate injury death statistics be removed? S Afr Med J 2023; 113:30-35. [PMID: 37882130 PMCID: PMC11017197 DOI: 10.7196/samj.2023.v113i9.836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Indexed: 10/27/2023] Open
Abstract
BACKGROUND Contrary to the World Health Organization's internationally recommended medical certificate of cause of death, the South African (SA) death notification form (DNF) does not allow for the reporting of the manner of death to permit accurate coding of external causes of injury deaths. OBJECTIVES To describe the injury cause-of-death profile from forensic pathology records collected for the National Cause-of-Death Validation (NCoDV) Project and compare it with profiles from other sources of injury mortality data. In particular, the recording of firearm use in homicides is compared between sources. METHODS The NCoDV Project was a cross-sectional study of deaths that occurred during a fixed period in 2017 and 2018, from a nationally representative sample of 27 health subdistricts in SA. Trained fieldworkers scanned forensic records for all deaths investigated at the forensic mortuaries serving the sampled subdistricts during the study period. Forensic practitioners reviewed the records and completed a medical certificate of cause of death for each decedent. Causes of death were coded to the International Statistical Classification of Diseases, 10th revision (ICD-10), using Iris automated coding software. Cause-specific mortality fractions for injury deaths were compared with Injury Mortality Survey 2017 (IMS 2017) and Statistics South Africa 2017 (Stats SA 2017) datasets. The cause profile for all firearm-related deaths was compared between the three datasets. RESULTS A total of 5 315 records were available for analysis. Males accounted for 77.6% of cases, and most decedents were aged between 25 and 44 years. Homicide was the leading cause of death (34.7%), followed by transport injuries (32.6%) and suicide (14.7%). This injury cause profile was similar to IMS 2017 but differed markedly from the official statistics, which showed markedly lower proportions of these three causes (15.0%, 11.6% and 0.7%, respectively), and a much higher proportion of other unintentional causes. Investigation of firearm-related deaths revealed that most were homicides in NCoDV 2017/18 (88.5%) and IMS 2017 (93.1%), while in the Stats SA 2017 data, 98.7% of firearm deaths were classified as accidental. Approximately 7% of firearm-related deaths were suicides in NCoDV 2017/18 and IMS 2017, with only 0.3% in Stats SA 2017. CONCLUSION The official cause-of-death data for injuries in SA in 2017 differed substantially from findings from the NCoDV 2017/18 study and IMS 2017. Accurate data sources would ensure that public health interventions are designed to reduce the high injury burden. Inclusion of the manner of death on the DNF, as is recommended internationally, is critically important to enable more accurate, reliable and valid reporting of the injury profile.
Collapse
Affiliation(s)
- P Groenewald
- Burden of Disease Research Unit, South African Medical Research Council, Cape Town, South Africa.
| | - N Kallis
- Burden of Disease Research Unit, South African Medical Research Council, Cape Town, South Africa.
| | - C Holmgren
- Burden of Disease Research Unit, South African Medical Research Council, Cape Town, South Africa.
| | - T Glass
- Burden of Disease Research Unit, South African Medical Research Council, Cape Town, South Africa.
| | - A Anthony
- Department of Health and Wellness, Western Cape Department of Health, Cape Town, South Africa.
| | - P Maud
- Burden of Disease Research Unit, South African Medical Research Council, Cape Town, South Africa.
| | - Y Akhalwaya
- Family Centre for Research with Ubuntu (FAM-CRU), Department of Paediatrics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.
| | - E Afonso
- Division of Forensic Medicine, Department of Pathology, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.
| | - I Niewoudt
- Division of Forensic Medicine, Department of Pathology, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.
| | - L J Martin
- Division of Forensic Medicine, Department of Pathology, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa; Forensic Pathology Service, Western Cape Department of Health, Cape Town, South Africa.
| | - C De Vaal
- Division of Forensic Medicine, Department of Pathology, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.
| | - M Cheyip
- US Centers for Disease Control and Prevention, Pretoria, South Africa.
| | - D Morof
- US Centers for Disease Control and Prevention, Pretoria, South Africa.
| | - M Prinsloo
- Burden of Disease Research Unit, South African Medical Research Council, Cape Town, South Africa; Institute for Lifecourse Development, Faculty of Education, Health and Human Sciences, University of Greenwich, London, UK; School of Public Health and Family Medicine, Faculty of Health Sciences, University of Cape Town, South Africa.
| | - R Matzopoulos
- Burden of Disease Research Unit, South African Medical Research Council, Cape Town, South Africa; School of Public Health and Family Medicine, Faculty of Health Sciences, University of Cape Town, South Africa.
| | - D Bradshaw
- Burden of Disease Research Unit, South African Medical Research Council, Cape Town, South Africa.
| |
Collapse
|
2
|
Haak F, Kollmar O, Ioannidis A, Slotta JE, Ghadimi MB, Glass T, von Strauss Und Torney M. Predicting complicated appendicitis based on clinical findings: the role of Alvarado and Appendicitis Inflammatory Response scores. Langenbecks Arch Surg 2022; 407:2051-2057. [PMID: 35543821 PMCID: PMC9399057 DOI: 10.1007/s00423-022-02533-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 04/24/2022] [Indexed: 10/27/2022]
Abstract
PURPOSE The pre-interventional differentiation between complicated and uncomplicated appendicitis is decisive for treatment. In the context of conservative therapy, the definitive diagnosis of uncomplicated appendicitis is mandatory. This study investigates the ability of clinical scoring systems and imaging to differentiate between the two entities. METHODS This is a retrospective analysis of two cohorts from two tertiary referral centers in Switzerland and Germany. All consecutive patients underwent appendectomy between January 2008 and April 2013 (in the first cohort) or between January 2017 and June 2019 (the second cohort). Exclusion criteria did not apply as all patients found by the database search and received an appendectomy were included. Diagnostic testing and calculation of a receiver operating curve were performed to identify a cutoff for clinical scores that resulted in a minimum sensitivity of 90% to detect complicated appendicitis. The cutoff was combined with additional diagnostic imaging criteria to see if diagnostic properties could be improved. RESULTS Nine hundred fifty-six patients were included in the analysis. Two hundred twenty patients (23%) had complicated appendicitis, and 736 patients (77%) had uncomplicated appendicitis or no inflammation. The complicated appendicitis cohort had a mean Alvarado score of 7.03 and a mean AIR of 5.21. This compared to a mean Alvarado of 6.53 and a mean AIR of 4.07 for the uncomplicated appendicitis cohort. The highest Alvarado score with a sensitivity of > 90% to detect complicated appendicitis was ≧ 5 (sensitivity = 95%, specificity 8.99%). The highest AIR score with a sensitivity of > 90% to detect complicated appendicitis was ≧ 3 (sensitivity 91.82%, specificity 18.53). The analysis showed that additional CT information did not improve the sensitivity of the proposed cut-offs. CONCLUSION AIR and Alvarado scores showed limited capability to distinguish between complicated and uncomplicated appendicitis even with additional imaging in this retrospective cohort. As conservative management of appendicitis needs to exclude patients with complicated disease reliably, appendectomy seems until now to remain the safest option to prevent undertreatment of this mostly benign disease.
Collapse
Affiliation(s)
- F Haak
- Department of Visceral Surgery, University Centre for Gastrointestinal and Liver Diseases, St. Clara Hospital and University Hospital Basel, Spitalstrasse 21, 4031, Clarunis Basel, Switzerland
| | - O Kollmar
- Department of Visceral Surgery, University Centre for Gastrointestinal and Liver Diseases, St. Clara Hospital and University Hospital Basel, Spitalstrasse 21, 4031, Clarunis Basel, Switzerland.,Department of General, Visceral and Pediatric Surgery, University Medical Center, Goettingen, Goettingen, Germany
| | - A Ioannidis
- Department of Visceral Surgery, University Centre for Gastrointestinal and Liver Diseases, St. Clara Hospital and University Hospital Basel, Spitalstrasse 21, 4031, Clarunis Basel, Switzerland
| | - J E Slotta
- General, Visceral and Transplantation Surgery, Westpfalz Klinikum, Kaiserslautern, Germany.,Department of General, Visceral and Pediatric Surgery, University Medical Center, Goettingen, Goettingen, Germany
| | - M B Ghadimi
- Department of General, Visceral and Pediatric Surgery, University Medical Center, Goettingen, Goettingen, Germany
| | - T Glass
- Clinical Biostatistics and Data Management Group, Swiss Tropical and Public Health Institute Basel, Basel, Switzerland
| | - M von Strauss Und Torney
- Department of Visceral Surgery, University Centre for Gastrointestinal and Liver Diseases, St. Clara Hospital and University Hospital Basel, Spitalstrasse 21, 4031, Clarunis Basel, Switzerland.
| |
Collapse
|
3
|
Steinfurth A, Oppel S, Dias MP, Starnes T, Pearmain EJ, Dilley BJ, Davies D, Nydegger M, Bell C, Le Bouard F, Bond AL, Cuthbert RJ, Glass T, Makhado AB, Crawford RJM, Ryan PG, Wanless RM, Ratcliffe N. Important marine areas for the conservation of northern rockhopper penguins within the Tristan da Cunha Exclusive Economic Zone. ENDANGER SPECIES RES 2020. [DOI: 10.3354/esr01076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The designation of Marine Protected Areas has become an important approach to conserving marine ecosystems that relies on robust information on the spatial distribution of biodiversity. We used GPS tracking data to identify marine Important Bird and Biodiversity Areas (IBAs) for the Endangered northern rockhopper penguin Eudyptes moseleyi within the Exclusive Economic Zone (EEZ) of Tristan da Cunha in the South Atlantic. Penguins were tracked throughout their breeding season from 3 of the 4 main islands in the Tristan da Cunha group. Foraging trips remained largely within the EEZ, with the exception of those from Gough Island during the incubation stage. We found substantial variability in trip duration and foraging range among breeding stages and islands, consistent use of areas among years and spatial segregation of the areas used by neighbouring islands. For colonies with no or insufficient tracking data, we defined marine IBAs based on the mean maximum foraging range and merged the areas identified to propose IBAs around the Tristan da Cunha archipelago and Gough Island. The 2 proposed marine IBAs encompass 2% of Tristan da Cunha’s EEZ, and are used by all northern rockhopper penguins breeding in the Tristan da Cunha group, representing ~90% of the global population. Currently, one of the main threats to northern rockhopper penguins within the Tristan da Cunha EEZ is marine pollution from shipping, and the risk of this would be reduced by declaring waters within 50 nautical miles of the coast as ‘areas to be avoided’.
Collapse
Affiliation(s)
- A Steinfurth
- RSPB Centre for Conservation Science, David Attenborough Building, Pembroke Street, Cambridge, CB2 3QZ, UK
- FitzPatrick Institute of African Ornithology, University of Cape Town, Rondebosch 7700, South Africa
| | - S Oppel
- RSPB Centre for Conservation Science, David Attenborough Building, Pembroke Street, Cambridge, CB2 3QZ, UK
| | - MP Dias
- BirdLife International, David Attenborough Building, Pembroke Street, Cambridge, CB2 3QZ, UK
- MARE - Marine and Environmental Sciences Center, ISPA - Instituto Universitário, 1100-304 Lisboa, Portugal
| | - T Starnes
- RSPB Centre for Conservation Science, David Attenborough Building, Pembroke Street, Cambridge, CB2 3QZ, UK
| | - EJ Pearmain
- BirdLife International, David Attenborough Building, Pembroke Street, Cambridge, CB2 3QZ, UK
| | - BJ Dilley
- FitzPatrick Institute of African Ornithology, University of Cape Town, Rondebosch 7700, South Africa
| | - D Davies
- FitzPatrick Institute of African Ornithology, University of Cape Town, Rondebosch 7700, South Africa
| | - M Nydegger
- RSPB Centre for Conservation Science, David Attenborough Building, Pembroke Street, Cambridge, CB2 3QZ, UK
| | - C Bell
- RSPB Centre for Conservation Science, David Attenborough Building, Pembroke Street, Cambridge, CB2 3QZ, UK
| | - F Le Bouard
- RSPB Centre for Conservation Science, David Attenborough Building, Pembroke Street, Cambridge, CB2 3QZ, UK
| | - AL Bond
- RSPB Centre for Conservation Science, David Attenborough Building, Pembroke Street, Cambridge, CB2 3QZ, UK
- Bird Group, Department of Life Sciences, The Natural History Museum, Tring, HP23 6AP, UK
| | - RJ Cuthbert
- RSPB Centre for Conservation Science, David Attenborough Building, Pembroke Street, Cambridge, CB2 3QZ, UK
- World Land Trust, Blyth House, Bridge Street, Halesworth, IP19 8AB, UK
| | - T Glass
- Tristan Conservation Department, Edinburgh of the Seven Seas, Tristan da Cunha, TDCU 1ZZ, South Atlantic
| | - AB Makhado
- FitzPatrick Institute of African Ornithology, University of Cape Town, Rondebosch 7700, South Africa
- Department of Environment, Forestry and Fisheries, PO Box 52126, Cape Town 8000, South Africa
| | - RJM Crawford
- Department of Environment, Forestry and Fisheries, PO Box 52126, Cape Town 8000, South Africa
| | - PG Ryan
- FitzPatrick Institute of African Ornithology, University of Cape Town, Rondebosch 7700, South Africa
| | - RM Wanless
- FitzPatrick Institute of African Ornithology, University of Cape Town, Rondebosch 7700, South Africa
- Institute of Marine Affairs and Resource Management, National Taiwan Ocean University, Keelung, 20224, Taiwan
| | - N Ratcliffe
- British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET, UK
| |
Collapse
|
4
|
Requena S, Oppel S, Bond AL, Hall J, Cleeland J, Crawford RJM, Davies D, Dilley BJ, Glass T, Makhado A, Ratcliffe N, Reid TA, Ronconi RA, Schofield A, Steinfurth A, Wege M, Bester M, Ryan PG. Marine hotspots of activity inform protection of a threatened community of pelagic species in a large oceanic jurisdiction. Anim Conserv 2020. [DOI: 10.1111/acv.12572] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- S. Requena
- RSPB Centre for Conservation Science Royal Society for the Protection of Birds Sandy UK
| | - S. Oppel
- RSPB Centre for Conservation Science Royal Society for the Protection of Birds Sandy UK
| | - A. L. Bond
- RSPB Centre for Conservation Science Royal Society for the Protection of Birds Sandy UK
- Bird Group Department of Life Sciences The National History Museum Tring UK
| | - J. Hall
- RSPB Centre for Conservation Science Royal Society for the Protection of Birds Sandy UK
| | - J. Cleeland
- RSPB Centre for Conservation Science Royal Society for the Protection of Birds Sandy UK
| | - R. J. M. Crawford
- Department of Environmental Affairs Branch Oceans and Coasts Cape Town South Africa
| | - D. Davies
- FitzPatrick Institute of African Ornithology DST‐NRF Centre of Excellence University of Cape Town Rondebosch South Africa
| | - B. J. Dilley
- FitzPatrick Institute of African Ornithology DST‐NRF Centre of Excellence University of Cape Town Rondebosch South Africa
| | - T. Glass
- Tristan da Cunha Conservation Department Edinburgh of the Seven Seas Tristan da Cunha
| | - A. Makhado
- Department of Environmental Affairs Branch Oceans and Coasts Cape Town South Africa
- FitzPatrick Institute of African Ornithology DST‐NRF Centre of Excellence University of Cape Town Rondebosch South Africa
| | | | - T. A. Reid
- FitzPatrick Institute of African Ornithology DST‐NRF Centre of Excellence University of Cape Town Rondebosch South Africa
| | - R. A. Ronconi
- Department of Biology Dalhousie University Halifax Nova Scotia Canada
- Canadian Wildlife Service Environment and Climate Change Canada Dartmouth Nova Scotia Canada
| | - A. Schofield
- RSPB Centre for Conservation Science Royal Society for the Protection of Birds Sandy UK
| | - A. Steinfurth
- RSPB Centre for Conservation Science Royal Society for the Protection of Birds Sandy UK
| | - M. Wege
- Department of Zoology and Entomology Mammal Research Institute University of Pretoria Pretoria South Africa
| | - M. Bester
- Department of Zoology and Entomology Mammal Research Institute University of Pretoria Pretoria South Africa
| | - P. G. Ryan
- FitzPatrick Institute of African Ornithology DST‐NRF Centre of Excellence University of Cape Town Rondebosch South Africa
| |
Collapse
|
5
|
Bester MN, Dilley BJ, Davies D, Glass T. Sub-Antarctic fur seals depredate northern rockhopper penguins at Nightingale Island, Tristan da Cunha. Polar Biol 2020. [DOI: 10.1007/s00300-020-02688-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
6
|
Barnes DKA, Morley SA, Bell J, Brewin P, Brigden K, Collins M, Glass T, Goodall-Copestake WP, Henry L, Laptikhovsky V, Piechaud N, Richardson A, Rose P, Sands CJ, Schofield A, Shreeve R, Small A, Stamford T, Taylor B. Marine plastics threaten giant Atlantic Marine Protected Areas. Curr Biol 2019; 28:R1137-R1138. [PMID: 30300595 DOI: 10.1016/j.cub.2018.08.064] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
There has been a recent shift in global perception of plastics in the environment, resulting in a call for greater action. Science and the popular media have highlighted plastic as an increasing stressor [1,2]. Efforts have been made to confer protected status to some remote locations, forming some of the world's largest Marine Protected Areas, including several UK overseas territories. We assessed plastic at these remote Atlantic Marine Protected Areas, surveying the shore, sea surface, water column and seabed, and found drastic changes from 2013-2018. Working from the RRS James Clark Ross at Ascension, St. Helena, Tristan da Cunha, Gough and the Falkland Islands (Figure 1A), we showed that marine debris on beaches has increased more than 10 fold in the past decade. Sea surface plastics have also increased, with in-water plastics occurring at densities of 0.1 items m-3; plastics on seabeds were observed at ≤ 0.01 items m-2. For the first time, beach densities of plastics at remote South Atlantic sites approached those at industrialised North Atlantic sites. This increase even occurs hundreds of meters down on seamounts. We also investigated plastic incidence in 2,243 animals (comprising 26 species) across remote South Atlantic oceanic food webs, ranging from plankton to seabirds. We found that plastics had been ingested by primary consumers (zooplankton) to top predators (seabirds) at high rates. These findings suggest that MPA status will not mitigate the threat of plastic proliferation to this rich, unique and threatened biodiversity.
Collapse
Affiliation(s)
| | - S A Morley
- British Antarctic Survey, NERC, Cambridge, UK
| | - J Bell
- Centre for Environment, Fisheries and Aquaculture Science, Lowestoft, UK
| | - P Brewin
- South Atlantic Environment Research Institute, Stanley, Falkland Islands
| | - K Brigden
- South Atlantic Environment Research Institute, Stanley, Falkland Islands
| | - M Collins
- Centre for Environment, Fisheries and Aquaculture Science, Lowestoft, UK
| | - T Glass
- Tristan da Cunha Conservation Department, Edinburgh, UK Overseas Territory
| | | | - L Henry
- Marine Conservation, ENRD, St. Helena Government
| | - V Laptikhovsky
- Centre for Environment, Fisheries and Aquaculture Science, Lowestoft, UK
| | | | - A Richardson
- Ascension Island Conservation and Fisheries Department
| | - P Rose
- Pristine Seas, National Geographic Society, Washington DC, USA
| | - C J Sands
- British Antarctic Survey, NERC, Cambridge, UK
| | - A Schofield
- Royal Society for the Protection of Birds, Sandy, UK
| | - R Shreeve
- Marine Conservation, ENRD, St. Helena Government
| | - A Small
- Marine Conservation, ENRD, St. Helena Government
| | - T Stamford
- Centre for Environment, Fisheries and Aquaculture Science, Lowestoft, UK
| | - B Taylor
- St. Helena National Trust, Jamestown, St. Helena
| |
Collapse
|
7
|
Tunik MG, Powell EC, Mahajan P, Schunk JE, Jacobs E, Miskin M, Zuspan SJ, Wootton-Gorges S, Atabaki SM, Hoyle JD, Holmes JF, Dayan PS, Kuppermann N, Gerardi M, Tunik M, Tsung J, Melville K, Lee L, Mahajan P, Dayan P, Nadel F, Powell E, Atabaki S, Brown K, Glass T, Hoyle J, Cooper A, Jacobs E, Monroe D, Borgialli D, Gorelick M, Bandyopadhyay S, Bachman M, Schamban N, Callahan J, Kuppermann N, Holmes J, Lichenstein R, Stanley R, Badawy M, Babcock-Cimpello L, Schunk J, Quayle K, Jaffe D, Lillis K, Kuppermann N, Alpern E, Chamberlain J, Dean J, Gerardi M, Goepp J, Gorelick M, Hoyle J, Jaffe D, Johns C, Levick N, Mahajan P, Maio R, Melville K, Miller S, Monroe D, Ruddy R, Stanley R, Treloar D, Tunik M, Walker A, Kavanaugh D, Park H, Dean M, Holubkov R, Knight S, Donaldson A, Chamberlain J, Brown M, Corneli H, Goepp J, Holubkov R, Mahajan P, Melville K, Stremski E, Tunik M, Gorelick M, Alpern E, Dean J, Foltin G, Joseph J, Miller S, Moler F, Stanley R, Teach S, Jaffe D, Brown K, Cooper A, Dean J, Johns C, Maio R, Mann N, Monroe D, Shaw K, Teitelbaum D, Treloar D, Stanley R, Alexander D, Brown J, Gerardi M, Gregor M, Holubkov R, Lillis K, Nordberg B, Ruddy R, Shults M, Walker A, Levick N, Brennan J, Brown J, Dean J, Hoyle J, Maio R, Ruddy R, Schalick W, Singh T, Wright J. Clinical Presentations and Outcomes of Children With Basilar Skull Fractures After Blunt Head Trauma. Ann Emerg Med 2016; 68:431-440.e1. [DOI: 10.1016/j.annemergmed.2016.04.058] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 04/18/2016] [Accepted: 04/27/2016] [Indexed: 12/17/2022]
|
8
|
|
9
|
Aebi-Popp K, Glass T, Rudin C, Bertisch B, Martinez de Tejada B, Grawe C, Scheibner K, Rickenbach M, Hoesli I. Barriers to achieving undetectable viral load in HIV-positive pregnant women at the time of delivery: The Swiss Mother & Child HIV Cohort Study. Z Geburtshilfe Neonatol 2013. [DOI: 10.1055/s-0033-1361427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
10
|
Packer RJ, Rood BR, Onar-Thomas A, Goldman S, Fisher MJ, Smith C, Boyett J, Kun L, Nelson MB, Compton P, Macey P, Patel S, Jacob E, O'Neil S, Finlay J, Harper R, Legault G, Chhabra A, Allen JC, Si SJ, Flores N, Haley K, Malvar J, Fangusaro J, Dhall G, Sposto R, Davidson TB, Finlay JL, Krieger M, Finlay JL, Zhou T, Miller DC, Geyer JR, Pollack IF, Gajjar A, Cohen BH, Nellan A, Murray JC, Honeycutt J, Gomez A, Head H, Braly E, Puccetti DM, Patel N, Kennedy T, Bradley K, Howard S, Salamat S, Iskandar B, Slavc I, Peyrl A, Chocholous M, Kieran M, Azizi A, Czech T, Dieckmann K, Haberler C, Sadighi ZS, Ellezam B, Khatua S, Ater J, Biswas A, Kakkar A, Goyal S, Mallick S, Sarkar C, Sharma MC, Julka PK, Rath GK, Glass T, Cochrane DD, Rassekh SR, Goddard K, Hukin J, Deopujari CE, Khakoo Y, Hanmantgad S, Forester K, McDonald SA, De Braganca K, Yohay K, Wolff JE, Kwiecien R, Rutkowski S, Pietsch T, Faldum A, Kortmann RD, Kramm C, Fouladi M, Olson J, Stewart C, Kocak M, Onar-Thomas A, Wagner L, Packer R, Goldman S, Gururangan S, Blaney S, Pollack I, Smith C, Demuth T, Kun L, Boyett J, Gilbertson R, Powell MK, Klement GL, Roffidal T, Fonkem E, Wolff JE. CLIN-PEDIATRICS CLINICAL RESEARCH. Neuro Oncol 2012. [DOI: 10.1093/neuonc/nos234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
11
|
Dorn HC, Stevenson S, Burbank P, Sun Z, Glass T, Harich K, Loosdrecht PHMV, Johnson RD, Beyers R, Salem JR, Vries MSD, Yannoni CS, Kiang CH, Bethune DS. Endohedral Metallofullerenes: Isolation and Characterization. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-359-123] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Since the initial discovery of fullerenes nearly a decade ago [1], material scientists have focused attention on the possibility of encapsulating one or more metal atoms inside these spheroidal carbon frames. The experimental realization of macroscopic quantities of endohedral metallofullerenes (Am@C2n, n=30-55) in the early 1990's has heightened interest in developing this new class of tunable materials with possible electronic and/or optical applications [2,3]. They have been characterized by a number of spectroscopic techniques, for example, scanning tunneling microscope [4,5], EXAFS [6,7] and x-ray diffraction and electron microscopy [8]. However, low production yields and purification difficulties have hampered the development of this new class of materials. The soluble product distribution usually consists of high levels of the empty-caged fullerenes C60, C70, C84 and decreasing levels of the higher fullerenes, while the endohedral metallofullerene fraction usually constitutes less than 1% of the total soluble yield. Furthermore, the endohedral metallofullerene fraction consists of molecules with different numbers of metal atoms encapsulated (m=1-3), cage sizes (C2n) and isomers of the same mass (e.g., Er2@C82). The purification process is further complicated by the chemical reactivity of several endohedral metallofullerenes [9] in aerobic environments. For several years, we have been involved in a collaborative effort to develop methodology for detection, isolation, and characterization of endohedral metallofullerenes. The focus of the present study is on fullerenes encapsulating metals from Group II1b, (Sc@C2n, Y@C2n, and La@C2n) and the lanthanide series metal (Er@C2n).
Collapse
|
12
|
Franco M, Brancati F, Glass T, Caballero B, Diez-Roux A. Assessment of the Nutrition Environment in Communities. Am J Epidemiol 2006. [DOI: 10.1093/aje/163.suppl_11.s245-b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
13
|
Zheng J, Glass T, Taylor LT, Pinkston JD. Study of the elution mechanism of sodium aryl sulfonates on bare silica and a cyano bonded phase with methanol-modified carbon dioxide containing an ionic additive. J Chromatogr A 2005; 1090:155-64. [PMID: 16196144 DOI: 10.1016/j.chroma.2005.07.021] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The elution mechanism of sodium sulfonates on both Deltabond cyanopropyl and bare silica stationary phases with an isocratic mobile phase composed of methanol-modified CO2 wherein an ammonium salt additive was dissolved in the methanol has been studied. The presence of the additive was crucial concerning elution of the sulfonate salts. Solid state 29silicon nuclear magnetic resonance spectroscopy provided some insight concerning the interaction of the mobile phase additive with the silica-based stationary phase. Computational calculations concerning the charge distribution on various ammonium salts were performed in an effort to explain the elution behavior. Ammonium ions are believed to deactivate available silanol sites on both phases. In addition, ammonium ion is speculated to interact with the cyano groups on the bonded phase. For concentrations of additive greater than 2 mM, stationary phase coverage of ammonium ion is anticipated to exceed one monolayer for both bare and bonded silica. The acetate counter-ion is thought to facilitate elution of the anionic sulfonates from the positively charged stationary phase in a pseudo ion exchange mechanism.
Collapse
Affiliation(s)
- J Zheng
- Department of Chemistry, 107 Davidson Hall, Virginia Tech, Blacksburg, VA 24061-0212, USA
| | | | | | | |
Collapse
|
14
|
Dorn HC, Taylor LT, Glass T. Study of solvent refined coal by elevated temperature carbon-13 Fourier transform nuclear magnetic resonance spectrometry. Anal Chem 2002. [DOI: 10.1021/ac50043a038] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
15
|
Stevenson S, Fowler PW, Heine T, Duchamp JC, Rice G, Glass T, Harich K, Hajdu E, Bible R, Dorn HC. A stable non-classical metallofullerene family. Nature 2000; 408:427-8. [PMID: 11100715 DOI: 10.1038/35044199] [Citation(s) in RCA: 336] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- S Stevenson
- Department of Chemistry, Virginia Tech, Blacksburg 24061, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Abstract
It is widely recognized that social relationships and affiliation have powerful effects on physical and mental health. When investigators write about the impact of social relationships on health, many terms are used loosely and interchangeably including social networks, social ties and social integration. The aim of this paper is to clarify these terms using a single framework. We discuss: (1) theoretical orientations from diverse disciplines which we believe are fundamental to advancing research in this area; (2) a set of definitions accompanied by major assessment tools; and (3) an overarching model which integrates multilevel phenomena. Theoretical orientations that we draw upon were developed by Durkheim whose work on social integration and suicide are seminal and John Bowlby, a psychiatrist who developed attachment theory in relation to child development and contemporary social network theorists. We present a conceptual model of how social networks impact health. We envision a cascading causal process beginning with the macro-social to psychobiological processes that are dynamically linked together to form the processes by which social integration effects health. We start by embedding social networks in a larger social and cultural context in which upstream forces are seen to condition network structure. Serious consideration of the larger macro-social context in which networks form and are sustained has been lacking in all but a small number of studies and is almost completely absent in studies of social network influences on health. We then move downstream to understand the influences network structure and function have on social and interpersonal behavior. We argue that networks operate at the behavioral level through four primary pathways: (1) provision of social support; (2) social influence; (3) on social engagement and attachment; and (4) access to resources and material goods.
Collapse
Affiliation(s)
- L F Berkman
- Harvard School of Public Health, Boston, MA 02115, USA.
| | | | | | | |
Collapse
|
17
|
Hahn M, Glass T, Koke J. Extracellular matrix effects on a neuroblastoma cell line. Cytobios 2000; 102:7-19. [PMID: 10822794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Cells of various lines assume similar shapes when grown attached to substrates like coverslips. In contrast, cells cultured in a collagen and/or laminin matrix often assume a relatively normal morphology in comparison with their in situ counterparts. During investigations of neuroblastoma SH-SY5Y cells, an attempt was made to identify culture conditions which would cause the cells to assume a more regular shape. SH-SY5Y cells cultured on bare coverslips, on coverslips coated with rat-tail collagen, and in approximately 1 mm thick gels containing extracellular matrix components were compared. Striking differences were apparent when comparing the gel-cultured cells with cells cultured on coverslips. Cells grown in the gel formed ganglia-like clusters which generated bundles of neurites which targeted other 'ganglia'. The same cells grown on coverslips, whether or not they were collagen-coated, appeared unaware of the presence of other cells, and did not cluster, nor did they generate neurites.
Collapse
Affiliation(s)
- M Hahn
- Department of Biology, Southwest Texas State University, San Marcos 78666, USA
| | | | | |
Collapse
|
18
|
Stevenson S, Rice G, Glass T, Harich K, Cromer F, Jordan MR, Craft J, Hadju E, Bible R, Olmstead MM, Maitra K, Fisher AJ, Balch AL, Dorn HC. Erratum: Small-bandgap endohedral metallofullerenes in high yield and purity. Nature 1999. [DOI: 10.1038/47282] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
19
|
Stevenson S, Rice G, Glass T, Harich K, Cromer F, Jordan MR, Craft J, Hadju E, Bible R, Olmstead MM, Maitra K, Fisher AJ, Balch AL, Dorn HC. Small-bandgap endohedral metallofullerenes in high yield and purity. Nature 1999. [DOI: 10.1038/43415] [Citation(s) in RCA: 820] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
20
|
Woldorff M, Fox P, Matzke M, Lancaster J, Veeraswamy S, Zamarripa F, Seabolt M, Glass T, Gao J, Martin C, Jerabek P. Retinotopic organization of early visual spatial attention effects as revealed by PET and ERPs. Hum Brain Mapp 1998; 5:280-6. [DOI: 10.1002/(sici)1097-0193(1997)5:4<280::aid-hbm13>3.0.co;2-i] [Citation(s) in RCA: 150] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
21
|
Affiliation(s)
- S. Stevenson
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
| | - T. Glass
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
| | - H. C. Dorn
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
| |
Collapse
|
22
|
Abstract
A flow immunoassay method for the measurement of 2,4-dichlorophenoxyacetic acid (2,4-D) was developed. The competitive fluorescence immunoassay relies on the use of antibody- or antigen-coated poly(methyl methacrylate) particles (98 microns diameter) as a renewable solid phase. The assay exhibits a dynamic range of 0.1-100 micrograms l-1 using a monoclonal antibody or alternatively 10 micrograms l-1 to 10 mg l-1 using commercially available antiserum. The assay is demonstrated in buffered saline solution as well as in aquatic environmental media. The relative errors for the environmental matrices were similar to those for the buffer control. The precision of concentration values calculated at 1 mg l-1 (for the assay using antiserum) were +/- 0.28, +/- 0.27 and +/- 0.43 mg l-1 for the buffer, well water and river water matrices, respectively. The method shows cross-reactivity with compounds of closely related structure but little cross-reactivity with compounds dissimilar in structure to 2,4-D. The proposed automated competitive immunoassay method is rapid (between 7 and 15 min per assay), simple and potentially portable.
Collapse
Affiliation(s)
- K R Rogers
- US Environmental Protection Agency, National Exposure Research Laboratory, Las Vegas, NV 89193, USA
| | | | | | | |
Collapse
|
23
|
Affiliation(s)
- M I Herman
- University of Tennessee, College of Medicine, Memphis 38103, USA
| | | | | |
Collapse
|
24
|
Abstract
The cause of stuttering is unknown. Failure to develop left-hemispheric dominance for speech is a long-standing theory although others implicated the motor system more broadly, often postulating hyperactivity of the right (language nondominant) cerebral hemisphere. As knowledge of motor circuitry has advanced, theories of stuttering have become more anatomically specific, postulating hyperactivity of premotor cortex, either directly or through connectivity with the thalamus and basal ganglia. Alternative theories target the auditory and speech production systems. By contrasting stuttering with fluent speech using positron emission tomography combined with chorus reading to induce fluency, we found support for each of these hypotheses. Stuttering induced widespread overactivations of the motor system in both cerebrum and cerebellum, with right cerebral dominance. Stuttered reading lacked left-lateralized activations of the auditory system, which are thought to support the self-monitoring of speech, and selectively deactivated a frontal-temporal system implicated in speech production. Induced fluency decreased or eliminated the overactivity in most motor areas, and largely reversed the auditory-system underactivations and the deactivation of the speech production system. Thus stuttering is a disorder affecting the multiple neural systems used for speaking.
Collapse
Affiliation(s)
- P T Fox
- Research Imaging Center and Department of Radiology, University of Texas Health Science Center at San Antonio 78284, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Parsons LM, Fox PT, Downs JH, Glass T, Hirsch TB, Martin CC, Jerabek PA, Lancaster JL. Use of implicit motor imagery for visual shape discrimination as revealed by PET. Nature 1995; 375:54-8. [PMID: 7723842 DOI: 10.1038/375054a0] [Citation(s) in RCA: 500] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Positron emission tomography (PET) can be used to map brain regions that are active when a visual object (for example, a hand) is discriminated from its mirror form. Chronometric studies suggest that viewers 'solve' this visual shape task by mentally modelling it as a reaching task, implicitly moving their left hand into the orientation of any left-hand stimulus (and conversely for a right-hand stimulus). Here we describe an experiment in which visual and somatic processing are dissociated by presenting right hands to the left visual field and vice versa. Frontal (motor), parietal (somatosensory) and cerebellar (sensorimotor) regions similar to those activated by actual and imagined movement are strongly activated, whereas primary somatosensory and motor cortices are not. We conclude that mental imagery is realized at intermediate-to-high order, modality-specific cortical systems, but does not require primary cortex and is not constrained to the perceptual systems of the presented stimuli.
Collapse
Affiliation(s)
- L M Parsons
- Research Imaging Center, University of Texas Health Science Center, San Antonio, San Antonio, USA
| | | | | | | | | | | | | | | |
Collapse
|
26
|
Glass T, Heyman S, Seliem M, Murphy J, Norwood WI. Use of Tc-99m MAA in determining the etiology of increasing cyanosis following SVC-PA anastomosis for the hypoplastic left heart syndrome. Clin Nucl Med 1991; 16:410-2. [PMID: 1868652 DOI: 10.1097/00003072-199106000-00006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The hypoplastic left heart syndrome, which characteristically presents in the first few hours of life with cardiovascular collapse, is treated by reconstructive surgery (Norwood's procedure) beginning in the neonatal period. If untreated, more than 95% of infants with this malformation die within the first month of life. The case described involves the development of increasing cyanosis 7 weeks following bilateral superior vena caval-pulmonary artery (SVC-PA) anastomosis in an infant born with a hypoplastic left heart (including aortic and mitral valve stenosis) and an anatomic variant of bilateral superior vena cavae. The use of Tc-99m MAA proved efficacious in quantitating the differential perfusion to each lung, establishing the site of a postoperative stenosis in an anastomotic channel, and documenting systemic perfusion, thus confirming the right-to-left shunt from the superior vena cava to the systemic circulation that resulted in increasing cyanosis.
Collapse
Affiliation(s)
- T Glass
- Division of Nuclear Medicine, Children's Hospital of Philadelphia, Pennsylvania 19104
| | | | | | | | | |
Collapse
|
27
|
Glass T, Heyman S. Multiple foci of increased accumulation of Ga-67 citrate in a horseshoe kidney. Differentiation of infection from nephroblastomatosis. Clin Nucl Med 1991; 16:84-6. [PMID: 1848496 DOI: 10.1097/00003072-199102000-00003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
In the proper clinical setting, Ga-67 citrate appears to be a highly valuable radionuclide which may be used to differentiate an infectious process in the kidney from nephroblastomatosis. The authors present the case of a 7-year-old boy with multiple well-circumscribed foci of intense Ga-67 citrate accumulation in a horseshoe kidney. After a 2-week course of antibiotic therapy, the kidney showed significant improvement.
Collapse
Affiliation(s)
- T Glass
- Division of Nuclear Medicine, Children's Hospital of Philadelphia, Pennsylvania 19104
| | | |
Collapse
|
28
|
Abstract
Cyst-like radiolucencies ("holes") in ribs can be a manifestation of many different abnormalities. Two cases of child-abuse are presented in which the initial clue leading to the diagnosis of a battered-child was a cyst-like lytic lesion in the posterior rib cage.
Collapse
Affiliation(s)
- N Magid
- Department of Radiology, Newark Beth Israel Medical Center, New Jersey
| | | |
Collapse
|
29
|
Abstract
Balloon dilatation of the prostatic urethra was performed in eight dogs and one human with benign prostatic hyperplasia. This was done in vivo in six dogs and in vitro in two dogs and one human. Follow-up study at 1-23 weeks showed persistent dilatation, which was documented both radiographically and pathologically. Technical improvements limited complications to the early phase of the study. While results are encouraging, extrapolation to humans is difficult.
Collapse
|
30
|
Glass T. Fundamentals of electric soldering and welding. CDT Dig 1973; 4:2-4. [PMID: 4405629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|