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Konrad S, Büchner A, Lenarz T, Paasche G. Impedance development after implantation of hybrid-L24 cochlear implant electrodes. Int J Audiol 2023; 62:1137-1144. [PMID: 36193989 DOI: 10.1080/14992027.2022.2125914] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 09/13/2022] [Indexed: 11/05/2022]
Abstract
OBJECTIVE Shorter and thinner electrodes were developed for preserving residual hearing after cochlear implantation by minimising trauma. As trauma is regarded as one of the causes of fibrous tissue formation after implantation, and increase in impedance is considered to be connected to fibrous tissue formation, the aim of the current study was to evaluate impedance development after implantation of Hybrid-L electrodes. DESIGN Impedance values were retrospectively collected from our clinical database and evaluated for all active contacts and basal, middle and apical contacts separately for up to 10 years. STUDY SAMPLES All 137 adult patients received a Hybrid-L electrode and had to be implanted for at least 1 year. RESULTS On average impedances increased to 13 kOhm before first fitting and dropped to 5-7 kOhm under electrical stimulation with lower values measured on apical contacts. Mean values remained stable over years, but variability increased. Values before first fitting were independent of age at implantation whereas lower values were found later in patients of higher age at implantation. CONCLUSION Despite smaller contacts, impedance values after start of electrical stimulation were comparable to published values of Contour electrodes. This might suggest less tissue growth with the Hybrid-L electrode array.
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Affiliation(s)
- Simon Konrad
- Department of Otolaryngology, Hannover Medical School, Hannover, Germany
| | - Andreas Büchner
- Department of Otolaryngology, Hannover Medical School, Hannover, Germany
- Hearing4all Cluster of Excellence, Hannover Medical School, Hannover, Germany
| | - Thomas Lenarz
- Department of Otolaryngology, Hannover Medical School, Hannover, Germany
- Hearing4all Cluster of Excellence, Hannover Medical School, Hannover, Germany
| | - Gerrit Paasche
- Department of Otolaryngology, Hannover Medical School, Hannover, Germany
- Hearing4all Cluster of Excellence, Hannover Medical School, Hannover, Germany
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Wiessing L, Sypsa V, Abagiu AO, Arble A, Berndt N, Bosch A, Buskin S, Chemtob D, Combs B, Conyngham C, Feelemyer J, Fitzgerald M, Goldberg D, Hatzakis A, Patrascu RE, Keenan E, Khan I, Konrad S, Leahy J, McAuley A, Menza T, Merrick S, Metcalfe R, Rademaker T, Revivo S, Rosca P, Seguin-Devaux C, Skinner S, Smith C, Tinsley J, Wilberg M, Des Jarlais D. Impact of COVID-19 & Response Measures on HIV-HCV Prevention Services and Social Determinants in People Who Inject Drugs in 13 Sites with Recent HIV Outbreaks in Europe, North America and Israel. AIDS Behav 2023; 27:1140-1153. [PMID: 36367613 PMCID: PMC9651099 DOI: 10.1007/s10461-022-03851-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/30/2022] [Indexed: 11/13/2022]
Abstract
HIV/HCV prevention among people who inject drugs (PWID) is of key public health importance. We aimed to assess the impact of COVID-19 and associated response measures on HIV/HCV prevention services and socio-economic status of PWID in high-HIV-risk sites. Sites with recent (2011-2019) HIV outbreaks among PWID in Europe North America and Israel, that had been previously identified, were contacted early May 2020. Out of 17 sites invited to participate, 13 accepted. Semi-structured qualitative site reports were prepared covering data from March to May 2020, analyzed/coded and confirmed with a structured questionnaire, in which all sites explicitly responded to all 103 issues reported in the qualitative reports. Opioid maintenance treatment, needle/syringe programs and antiretroviral treatment /hepatitis C treatment continued, but with important reductions and operational changes. Increases in overdoses, widespread difficulties with food and hygiene needs, disruptions in drug supply, and increased homelessness were reported. Service programs rapidly reformed long established, and politically entrenched, restrictive service delivery policies. Future epidemic control measures should include mitigation of negative side-effects on service provision and socio-economic determinants in PWID.
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Affiliation(s)
- Lucas Wiessing
- Public Health Unit, European Monitoring Centre for Drugs and Drug Addiction (EMCDDA), Praça Europa 1, Cais do Sodré, 1249-289, Lisbon, Portugal.
| | - V Sypsa
- Department of Hygiene, Epidemiology and Medical Statistics, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - A O Abagiu
- National Institute for Infectious Diseases, Bucharest, Romania
| | - A Arble
- Hamilton County Public Health, Cincinnati, OH, USA
| | - N Berndt
- Luxembourg National Focal Point of the European Monitoring Centre for Drugs and Drug Addiction, Department of Epidemiology and Statistics, Directorate of Health, Luxembourg-Hamm, Luxembourg
| | - A Bosch
- STD, HIV, and TB Section - Infectious Disease Epidemiology, Prevention and Control, Minnesota Department of Health, St. Paul, MN, USA
| | - S Buskin
- University of Washington, Seattle, WA, USA
- Public Health - Seattle & King County, Seattle, WA, USA
| | - D Chemtob
- Department of Tuberculosis and AIDS, Ministry of Health, Jerusalem, Israel
- Braun School of Public Health and Community Medicine, Hebrew University-Hadassah Medical School, Jerusalem, Israel
| | - B Combs
- Scott County Health Department, Scottsburg, IN, USA
| | - C Conyngham
- Philadelphia Department of Public Health, Philadelphia, PA, USA
| | - J Feelemyer
- School of Global Public Health, New York University, New York, NY, USA
| | - M Fitzgerald
- National Social Inclusion Office, Health Services Executive, Dublin, Ireland
| | - D Goldberg
- Public Health Scotland, Glasgow, Scotland, United Kingdom
| | - A Hatzakis
- Department of Hygiene, Epidemiology and Medical Statistics, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - R E Patrascu
- National Institute for Infectious Diseases, Bucharest, Romania
| | - E Keenan
- National Social Inclusion Office, Health Services Executive, Dublin, Ireland
| | - I Khan
- First Nations and Inuit Health Branch, Indigenous Services Canada, Regina, Canada
| | - S Konrad
- First Nations and Inuit Health Branch, Indigenous Services Canada, Regina, Canada
| | - J Leahy
- Oregon Health Authority, Portland, OR, USA
| | - A McAuley
- Public Health Scotland, Glasgow, Scotland, United Kingdom
- School of Health and Life Sciences, Glasgow Caledonian University, Glasgow, Scotland, United Kingdom
| | - T Menza
- Oregon Health Authority, Portland, OR, USA
- Oregon Health and Science University, Portland, OR, USA
| | - S Merrick
- Hamilton County Public Health, Cincinnati, OH, USA
| | - R Metcalfe
- School of Health and Life Sciences, Glasgow Caledonian University, Glasgow, Scotland, United Kingdom
- Sandyford Sexual Health Service, Glasgow, Scotland, United Kingdom
| | - T Rademaker
- Hamilton County Public Health, Cincinnati, OH, USA
| | - S Revivo
- Izhar Needle and Syringe Programme, Public Health Association, Jerusalem, Israel
| | - P Rosca
- Department for the Treatment of Substance Abuse, Ministry of Health, Jerusalem, Israel
| | - C Seguin-Devaux
- Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
| | - S Skinner
- University of Saskatchewan, Saskatoon, Canada
| | - C Smith
- Philadelphia Department of Public Health, Philadelphia, PA, USA
| | - J Tinsley
- Public Health - Seattle & King County, Seattle, WA, USA
| | - M Wilberg
- Minnesota Department of Human Services, St. Paul, Minnesota, USA
| | - D Des Jarlais
- School of Global Public Health, New York University, New York, NY, USA
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Konrad S, Pähler Vor der Holte A, Bertram O, Welkoborsky HJ. [Skull and skull base injuries in children and adolescents : Results of a monocentric analysis]. HNO 2022; 70:352-360. [PMID: 35420311 DOI: 10.1007/s00106-022-01167-9] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/04/2022] [Indexed: 11/25/2022]
Abstract
BACKGROUND The present study comprises a retrospective analysis of skull, skull base, and midface fractures in children, to provide clinical orientation for their management. To date, only few data are available on these injuries in this patient group. METHODS Data from inpatient cases diagnosed with a midface, skull, or skull base fracture in the Children's Hospital Auf der Bult from 2015 to 2020 were evaluated. Age, gender, fracture mechanism, diagnosis, treatment, and possible complications were analyzed. Data of 224 children were grouped into 107 cases with nose fractures, 104 cases with skull fractures, 9 patients with temporal bone fractures, 4 patients with rhinobasal fractures, and 2 cases with fractures of the orbital floor. RESULTS Among patients with nose fractures, the average age was 10.9 years (64% males), among patients with skull fractures 1.0 year (64% males), and in children with skull base fractures 6.0 years (85% males). Falls were the most frequent genesis (63%), followed by car accidents, collisions (25%), and violence (10%). Patients with skull fractures underwent sonography in 94% of cases; in 87% the fracture was verified. Patients with nose fractures underwent x‑ray in 92% of cases, or sonography only in 8%; 95% of patients with nose fractures underwent operative repositioning. Typical fracture signs (i.e., hemotympanum, ophthalmic symptoms) or signs of central nervous system involvement (i.e., nausea, amnesia) occurred in 12 of 13 children with skull base fractures, and CT was performed in all these cases (none of whom developed a cerebrospinal fluid leak). CONCLUSION The imaging modality should be selected based on the clinically suspected diagnosis and the course. Most fractures can be sufficiently treated without any permanent sequelae, except for nose fractures, which frequently require operative repositioning.
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Affiliation(s)
- Simon Konrad
- Klinik für Hals‑, Nasen‑, Ohrenheilkunde, KRH Klinikum Nordstadt, Haltenhoffstraße 41, 30167, Hannover, Deutschland.
- Abteilung für HNO-Heilkunde, Kinder- und Jugendkrankenhaus Auf der Bult, Hannover, Deutschland.
| | - Anja Pähler Vor der Holte
- Klinik für Hals‑, Nasen‑, Ohrenheilkunde, KRH Klinikum Nordstadt, Haltenhoffstraße 41, 30167, Hannover, Deutschland
- Abteilung für HNO-Heilkunde, Kinder- und Jugendkrankenhaus Auf der Bult, Hannover, Deutschland
| | - Oliver Bertram
- Klinik für Hals‑, Nasen‑, Ohrenheilkunde, KRH Klinikum Nordstadt, Haltenhoffstraße 41, 30167, Hannover, Deutschland
- Abteilung für HNO-Heilkunde, Kinder- und Jugendkrankenhaus Auf der Bult, Hannover, Deutschland
| | - Hans-Jürgen Welkoborsky
- Klinik für Hals‑, Nasen‑, Ohrenheilkunde, KRH Klinikum Nordstadt, Haltenhoffstraße 41, 30167, Hannover, Deutschland
- Abteilung für HNO-Heilkunde, Kinder- und Jugendkrankenhaus Auf der Bult, Hannover, Deutschland
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Sturdza A, Stephanides M, Eriksen J, Benstead K, Hoskin P, Vlad S, Escande A, Corradini S, Konrad S, Westerveld H, Tagliaferri L, Najjari D, Konat-Bąska K, Plesinac Karapandzic V, Tan L, Nout R, Peters B, Tanderup K, Jürgenliemk-Schulz I, Kamrava M. PO-1487 Brachytherapy training survey among Radiation Oncology residents in Europe. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)07938-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Kiesmann M, Sauleau E, Perisse J, Jehl C, Konrad S, Karcher P, Fleury MC, Rohmer D, Sauer A, Ehret M, Vogel T, Kaltenbach G, Schmitt E. Parkinsonian gait in elderly people: Significance of the threshold value of two and more falls per year. Rev Neurol (Paris) 2020; 177:385-393. [PMID: 33032799 DOI: 10.1016/j.neurol.2020.06.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 05/11/2020] [Accepted: 06/12/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVES Parkinsonism in the elderly presents a major risk factor for recurrent falls (2 and more falls per year), which is associated with increased morbidity. The main objective was to investigate explanatory variables relating to the risk of being recurrent fallers (RF) in persons with parkinsonian gait. METHODS Seventy-nine among 172 eligible persons were enrolled in this prospective study, the findings of which were analyzed at 12 months. Motor and non-motor features, as well as follow-up interviews to identify falls, loss of ability to walk, fluctuating cognition, traumatic falls, all-cause hospitalizations and deaths were collated and results compared between non RF (zero and one fall per year) and RF. Bayesian model averaging was used to predict the probability of patients being RF from their medical history as well as from cognitive assessment, gait velocity, vision and posture. RESULTS N=79, 0.58 men, 50% had Parkinson's disease, 14% other neurodegenerative parkinsonian syndrome, 23% vascular parkinsonism and 13% Lewy body disease, 58% were RF. Median age 81.2 years and median MMSE 25/30. A history of falls and of hallucinations, median odds ratio respectively 9.06 (CI 2.34-38.22), 4.21 (CI 1.04-18.67) were associated with the highest odds ratios along with fluctuating cognition and abnormal posture. Two or more falls a year was a relevant threshold to distinguish a population with a high risk of comorbidity. CONCLUSION The whole history of falls, hallucinations and fluctuating cognition can be considered predictive of recurrent falls in elderly people with parkinsonian gait and provide a tracking tool for patient management.
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Affiliation(s)
- M Kiesmann
- Geriatric Department, University Hospitals of Strasbourg, Strasbourg, France
| | - E Sauleau
- Biostatistical Laboratory, iCube - CNRS UMR 7357, Department of Public Health, methods in clinical research, University of Strasbourg, Strasbourg, France
| | - J Perisse
- Geriatric Department, University Hospitals of Strasbourg, Strasbourg, France
| | - C Jehl
- Geriatric Department, University Hospitals of Strasbourg, Strasbourg, France
| | - S Konrad
- Geriatric Department, University Hospitals of Strasbourg, Strasbourg, France
| | - P Karcher
- Geriatric Department, University Hospitals of Strasbourg, Strasbourg, France
| | - M C Fleury
- Neurology Department, University Hospitals of Strasbourg, Strasbourg, France
| | - D Rohmer
- Otorhinolaryngology Department, University Hospitals of Strasbourg, Strasbourg, France
| | - A Sauer
- Ophthalmology Department, University Hospitals of Strasbourg and University of Strasbourg, Strasbourg, France
| | - M Ehret
- Otorhinolaryngology Department, University Hospitals of Strasbourg, Strasbourg, France
| | - T Vogel
- Geriatric Department, University Hospitals of Strasbourg, Strasbourg, France; EA-3072, University of Strasbourg, Strasbourg, France
| | - G Kaltenbach
- Geriatric Department, University Hospitals of Strasbourg, Strasbourg, France
| | - E Schmitt
- Geriatric Department, University Hospitals of Strasbourg, Strasbourg, France; EA-3072, University of Strasbourg, Strasbourg, France.
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Schmidt LH, Heitkoetter B, Schulze AB, Schliemann C, Konrad S, Trautmann M, Marra A, Hillejan L, Mohr M, Evers G, Wardelmann E, Rahbar K, Görlich D, Lenz G, Berdel W, Hartmann W, Wiewrodt R, Huss S. Die Bedeutung des Prostata-spezifischen Membranantigens (PSMA) im nicht-kleinzelligen Lungenkarzinom. Pneumologie 2018. [DOI: 10.1055/s-0037-1619220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- LH Schmidt
- Schwerpunkt Pneumologie, Medizinische Klinik A, Universitätsklinikum Münster
| | - B Heitkoetter
- Gerhard Domagk Institut für Pathologie, Universitätsklinikum Münster
| | - AB Schulze
- Schwerpunkt Pneumologie, Medizinische Klinik A, Universitätsklinikum Münster
| | - C Schliemann
- Hämatologie und Onkologie, Medizinische Klinik A, Universitätsklinikum Münster
| | - S Konrad
- Gerhard Domagk Institut für Pathologie, Universitätsklinikum Münster
| | - M Trautmann
- Gerhard Domagk Institut für Pathologie, Universitätsklinikum Münster
| | - A Marra
- Thoraxchirurgie, Klinikum Bremen Ost
| | - L Hillejan
- Klinik für Thoraxchirurgie Im Krankenhaus St. Raphael Ostercappeln
| | - M Mohr
- Medizinische Klinik A, Uniklinik Münster
| | - G Evers
- Schwerpunkt Pneumologie, Medizinische Klinik A, Universitätsklinikum Münster
| | - E Wardelmann
- Gerhard Domagk Institut für Pathologie, Universitätsklinikum Münster
| | - K Rahbar
- Klinik für Nuklearmedizin, Universitätsklinikum Münster
| | - D Görlich
- Institut für Statistik und Biometrie, Universitätsklinikum Münster
| | - G Lenz
- Hämatologie und Onkologie, Medizinische Klinik A, Universitätsklinikum Münster
| | - W Berdel
- Hämatologie und Onkologie, Medizinische Klinik A, Universitätsklinikum Münster
| | - W Hartmann
- Gerhard Domagk Institut für Pathologie, Universitätsklinikum Münster
| | - R Wiewrodt
- Schwerpunkt Pneumologie, Medizinische Klinik A, Universitätsklinikum Münster
| | - S Huss
- Gerhard Domagk Institut für Pathologie, Universitätsklinikum Münster
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Konrad S, Schwamborn K, Hellmann D, Schmalfeldt B, Kiechle M, Meindl A, Ramser J. Identification and characterization of a specific neuronal calcium sensor protein as novel prognostic and predictive biomarker for ovarian cancer therapy. Geburtshilfe Frauenheilkd 2016. [DOI: 10.1055/s-0036-1592966] [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: 10/20/2022] Open
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Van Buynder PG, Konrad S, Kersteins F, Preston E, Brown PD, Keen D, Murray NJ. Healthcare worker influenza immunization vaccinate or mask policy: strategies for cost effective implementation and subsequent reductions in staff absenteeism due to illness. Vaccine 2015; 33:1625-8. [PMID: 25678243 DOI: 10.1016/j.vaccine.2015.01.048] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Revised: 01/13/2015] [Accepted: 01/14/2015] [Indexed: 11/19/2022]
Abstract
BACKGROUND A new policy requiring staff in clinical areas to vaccinate or wear a mask was implemented in British Columbia (BC) in the 2012/13 winter. This review assessed the impact of the policy on absenteeism in health care workers. METHODS A retrospective cohort study of full-time HCW that worked prior to and during the 2012/13 influenza season in a health authority in BC. The rate of absenteeism due to all cause illness was compared between vaccinated and unvaccinated staff controlling for behaviors outside influenza season. RESULTS Of the 10079 HCW, 77% were vaccinated. By comparison to absenteeism rates in the pre-influenza season, unvaccinated staff in winter had twice the increase in absenteeism due to all-cause illness than vaccinated staff. CONCLUSION After controlling for baseline differences between those vaccinated and unvaccinated, influenza vaccination was associated with reduced absenteeism, saving the Health Authority substantial money. Having regular staff in attendance increases the quality of care.
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Affiliation(s)
- P G Van Buynder
- Fraser Health Authority, 13450 102nd Avenue, Surrey, Canada.
| | - S Konrad
- Fraser Health Authority, 13450 102nd Avenue, Surrey, Canada
| | - F Kersteins
- Fraser Health Authority, 13450 102nd Avenue, Surrey, Canada
| | - E Preston
- Fraser Health Authority, 13450 102nd Avenue, Surrey, Canada
| | - P D Brown
- Fraser Health Authority, 13450 102nd Avenue, Surrey, Canada
| | - D Keen
- Fraser Health Authority, 13450 102nd Avenue, Surrey, Canada
| | - N J Murray
- Fraser Health Authority, 13450 102nd Avenue, Surrey, Canada
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Konrad S, Raab A. Welche Faktoren beeinflussen die Einweisungsentscheidung von niedergelassenen Ärzten in der Praxis? Gesundh ökon Qual manag 2014. [DOI: 10.1055/s-0034-1365968] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Van Buynder P, Konrad S, Van Buynder J, Brodkin E, Krajden M, Ramler G, Bigham M. The comparative effectiveness of adjuvanted and unadjuvanted trivalent inactivated influenza vaccine (TIV) in the elderly. Vaccine 2013; 31:6122-8. [DOI: 10.1016/j.vaccine.2013.07.059] [Citation(s) in RCA: 104] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Revised: 06/16/2013] [Accepted: 07/25/2013] [Indexed: 10/26/2022]
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Abstract
Introduction
Knowledge about chronic bronchitis (CB) among Aboriginal people in Canada is limited. The aim of this study was to determine the prevalence of CB and its associated factors among Aboriginal people aged 15 years plus.
Methods
Logistic regression analysis was used on data from the cross-sectional 2006 Aboriginal Peoples Survey to determine risk factors associated with CB.
Results
CB prevalence was 6.6% among First Nations, 6.2% among Métis and 2.4% among Inuit. Prevalence was higher among females than males (7.2% versus 5.0%). Individuals with CB were more likely to be older, living at a lower income, with a lower educational attainment and residing in rural areas. Smoking status and body mass index were also significantly associated with CB, but their effect differed by sex. Obesity was particularly significantly associated with CB among females compared with males, and current smoking and non-smoking status was significantly associated with CB among females but not males.
Conclusion
These findings identify factors associated with CB among Aboriginal people. As such, they may represent potentially preventable risk factors that can inform health promotion and disease prevention practices.
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Affiliation(s)
- S Konrad
- Department of Community Health and Epidemiology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - A Hossain
- Department of Community Health and Epidemiology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - A Senthilselvan
- Department of Public Health Sciences, School of Public Health, University of Alberta, Edmonton, Alberta, Canada
| | - JA Dosman
- Canadian Centre for Health and Safety in Agriculture, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - MD Pahwa
- Department of Community Health and Epidemiology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
- Canadian Centre for Health and Safety in Agriculture, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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Konrad S, Hossain A, Senthilselvan A, Dosman JA, Pahwa P. Chronic bronchitis in Aboriginal people--prevalence and associated factors. Chronic Dis Inj Can 2013; 33:218-225. [PMID: 23987218] [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] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
INTRODUCTION Knowledge about chronic bronchitis (CB) among Aboriginal people in Canada is limited. The aim of this study was to determine the prevalence of CB and its associated factors among Aboriginal people aged 15 years plus. METHODS Logistic regression analysis was used on data from the cross-sectional 2006 Aboriginal Peoples Survey to determine risk factors associated with CB. RESULTS CB prevalence was 6.6% among First Nations, 6.2% among Métis and 2.4% among Inuit. Prevalence was higher among females than males (7.2% versus 5.0%). Individuals with CB were more likely to be older, living at a lower income, with a lower educational attainment and residing in rural areas. Smoking status and body mass index were also significantly associated with CB, but their effect differed by sex. Obesity was particularly significantly associated with CB among females compared with males, and current smoking and non-smoking status was significantly associated with CB among females but not males. CONCLUSION These findings identify factors associated with CB among Aboriginal people. As such, they may represent potentially preventable risk factors that can inform health promotion and disease prevention practices.
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Affiliation(s)
- S Konrad
- Department of Community Health and Epidemiology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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13
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Pahwa P, Hossain A, Konrad S, Senthilselvan A, Dosman J. Effect of obesity on prevalence of chronic bronchitis among canadian aboriginal adults. Can J Diabetes 2011. [DOI: 10.1016/s1499-2671(11)52082-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Mantke R, Halangk W, Habermann A, Peters B, Konrad S, Guenther M, Lippert H. Efficacy and safety of 5-mm-diameter bipolar and ultrasonic shears for cutting carotid arteries of the hybrid pig. Surg Endosc 2010; 25:577-85. [PMID: 20614136 DOI: 10.1007/s00464-010-1224-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2009] [Accepted: 01/07/2010] [Indexed: 01/11/2023]
Abstract
BACKGROUND Experimental data about the efficacy and safety of sealing devices are rare. Therefore, this study investigated these parameters for three commercially available energy-based vascular sealing and cutting systems. METHODS In male hybrid pigs, 487 carotid artery segments were sealed and cut using the harmonic scalpel or several bipolar sealing devices. The sealing failure rate, burst pressure, process time, and extent of lateral thermal damage were analyzed. RESULTS A regular sealing and cutting process in more than 90% of the carotid arteries was found using the following instruments: LS1520, ACE (level 1), ACE (level 3), CS14C (level 1), WAVE (level 1), and WAVE (level 5). The largest failure rate was found for the CS14C device (level 5: initial sealing failure, 21.5%). The maximal mean burst pressure (1727±453 mmHg) was reached using the ACE device (level 1). Significant differences were found in the size of the lateral thermal damage, which a ranged from 2.5 mm (LS1520) to 1.51 mm (CS14C, level 1). The process time ranged widely from 6.8 s (ACE, level 5) to 31.83 s (WAVE, level 1). CONCLUSION The current study demonstrated that all the tested devices are efficacious and safe in sealing and cutting arteries up to 5 mm in diameter. All the devices showed supraphysiologic mean burst pressures. Differences in failure rate, thermal damage, and process time lead to an advised application of the different systems.
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Affiliation(s)
- René Mantke
- Department of Surgery, Otto-von-Guericke-University of Magdeburg, Magdeburg, Germany.
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Krause-Döring R, Wetzig H, Konrad S, Jäckel K. Entwicklung eines Projektes im Muldentalkreis zur Erhöhung der Immunisierungsraten bei öffentlich empfohlenen Impfungen im Erwachsenalter. Gesundheitswesen 2007. [DOI: 10.1055/s-2007-982868] [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: 10/21/2022]
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Sack U, Hirth A, Funke B, Wiedemeyer K, Konrad S, Lehmann J, Emmrich F. Induction of a rapid progessive cartilage destruction in SCID mice by intraarticular application of a murine fibroblast like cell line. Arthritis Res Ther 2001. [PMCID: PMC3273268 DOI: 10.1186/ar264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Konrad S, Volz-Thomas A. Characterization of a commercial gas chromatography-flame ionization detection system for the in situ determination of C5-C10 hydrocarbons in ambient air. J Chromatogr A 2000; 878:215-34. [PMID: 10866068 DOI: 10.1016/s0021-9673(00)00302-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A commercial automated gas chromatograph with preconcentration on solid adsorbents (AirmoVoc HC1010) was coupled with a mass spectrometer in parallel with the flame ionization detection (FID) system and characterized for its suitability for quasi continuous measurements of atmospheric hydrocarbons (HCs) with a time resolution of 20 min. Of the 50 identified HCs in the range C5-C10, 15 elute in isolated peaks and 20 in groups of two or more HCs. The remaining 15 HCs suffer from coelution by oxygenated and halogenated compounds. Procedures to minimize and quantify the blanks and the memory from the adsorbents are described. Calibration was based on a custom-made diffusion source. The accuracy of this calibration (+/-10%, 2sigma) was verified by analysis of a certified 70-component standard (average deviation: -4.3+/-2%). During a field experiment in Summer 1998, the HC1010 system was compared with a custom-made GC system with cryogenic preconcentration and much better separation properties but lower time resolution. In ambient air, good agreement (2sigma deviation <14% or 10 ppt) was found for HCs and groups of HCs that are free from coelution with oxygenated compounds, whereas large discrepancies (in some cases more than a factor of three) were found for those HCs that coelute with oxygenated compounds, as identified by MS. Analysis of the mass spectra from those peaks via specific target ions showed much better agreement with the FID system of the reference GC within 25%.
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Affiliation(s)
- S Konrad
- Institut für Chemie der Belasteten Atmosphäre (ICG-2), Forschungszentrum Jülich GmbH, Germany
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Svergun DI, Konrad S, Huss M, Koch MH, Wieczorek H, Altendorf K, Volkov VV, Grüber G. Quaternary structure of V1 and F1 ATPase: significance of structural homologies and diversities. Biochemistry 1998; 37:17659-63. [PMID: 9922131 DOI: 10.1021/bi982367a] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.6] [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: 11/28/2022]
Abstract
The V1 ATPase from the tobacco hornworm Manduca sexta and the Escherichia coli F1 ATPase were characterized by small-angle X-ray scattering (SAXS). The radii of gyration (Rg) of the complexes were 6.2 +/- 0.1 and 4.7 +/- 0.02 nm, respectively. The shape of the M. sexta V1 ATPase was determined ab initio from the scattering data showing six masses, presumed to be the A and B subunits, arranged in an alternating manner about a 3-fold axis. A seventh mass with a length of about 11.0 nm extends perpendicularly to the center of the hexameric unit. This central mass is presumed to be the stalk that connects V1 with the membrane domain (V(O)) in the intact V1V(O)-ATPase. In comparison, the shape of the F1 ATPase from E. coli possesses a quasi-3-fold symmetry over the major part of the enzyme. The overall asymmetry of the structure is given by a stem, assumed to include the central stalk subunits. The features of the V1 and F1 ATPase reveal structural homologies and diversities of the key components of the complexes.
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Affiliation(s)
- D I Svergun
- European Molecular Biology Laboratory, Hamburg Outstation, Germany
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Abstract
The regional distribution of opioidergic nerves in the juvenile and adult human prostate and in the adult canine prostate has been studied immunohistochemically using well-characterized polyclonal antisera against multiple opioid peptides. Nerves displaying immunoreactivity (ir) for the proenkephalin (PRO-ENK) derivatives met-enkephalin (ME), leuenkephalin (LE), octapeptide, and heptapeptide (ordered in decreasing frequency) were present in the dorsolateral stroma of human prostate. In canine prostate, the situation was similar, but the number of opioid-ir nerve fibers was lower than in human prostate. In both species, staining for the prodynorphin (PRO-DYN) derivatives dynorphin A and alpha-neoendorphin or staining for the pro-opiomelanocortin (POMC)-derived beta-endorphin was not visualized. In addition to their presence in nerve fibers, PRO-ENK-ir opioids (octapeptide) occurred in intrinsic ganglionic cells situated in the capsule. Octapeptide but not LE-ir fibers supplied stromal blood vessels. The periurethral region and tissue adjacent to the ejaculatory ducts appeared to be devoid of opioid-ir innervation. We conclude that endogenous opioids apparently exclusively derived from PRO-ENK may fulfill important comessenger functions in the fine regulation of prostatic stromal tonus and of local vascular perfusion.
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Affiliation(s)
- G Aumüller
- Department of Anatomy and Cell Biology, Philipps-Universität, Marburg, Federal Republic of Germany
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Konrad S, Zentel J, Weihe E. Differential presence of opioid peptides in nerves supplying guinea-pig and rat urinary tract: Interrelation with non-opioid peptides. ACTA ACUST UNITED AC 1988. [DOI: 10.1016/0167-0115(88)90170-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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