1
|
Traugott MT, Pleininger S, Inschlag-Tisch S, Eder B, Seitz T, Merrelaar A, Reiß-Kornfehl J, Fussi J, Schindler S, Blaschitz M, Heger F, Indra A, Karolyi M, Staudacher M, Oelschlaegel T, Hoepler W, Neuhold S, Wenisch C. Correction: A case of fulminant respiratory diphtheria in a 24-year-old Afghan refugee in Austria in May 2022: a case report. Infection 2023; 51:497-498. [PMID: 36639594 PMCID: PMC10042953 DOI: 10.1007/s15010-022-01964-y] [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: 01/15/2023]
Affiliation(s)
- M T Traugott
- IV Medical Department with Infectious Diseases and Tropical Medicine, Clinic Favoriten, Kundratstraße 3, 1100, Vienna, Austria.
| | - S Pleininger
- Austrian Reference Centre for Diphtheria, Austrian Agency for Health and Food Safety, Vienna, Austria
| | - S Inschlag-Tisch
- Department of Internal Medicine, Cardiology and Nephrology, Hospital of Wiener Neustadt, Wiener Neustadt, Austria
| | - B Eder
- IV Medical Department with Infectious Diseases and Tropical Medicine, Clinic Favoriten, Kundratstraße 3, 1100, Vienna, Austria
| | - T Seitz
- IV Medical Department with Infectious Diseases and Tropical Medicine, Clinic Favoriten, Kundratstraße 3, 1100, Vienna, Austria
| | - A Merrelaar
- IV Medical Department with Infectious Diseases and Tropical Medicine, Clinic Favoriten, Kundratstraße 3, 1100, Vienna, Austria
| | - J Reiß-Kornfehl
- Department of Otorhinolaryngology, Hospital of Wiener Neustadt, Wiener Neustadt, Austria
| | - J Fussi
- Department of Internal Medicine, Cardiology and Nephrology, Hospital of Wiener Neustadt, Wiener Neustadt, Austria
| | - S Schindler
- Austrian Reference Centre for Diphtheria, Austrian Agency for Health and Food Safety, Vienna, Austria
| | - M Blaschitz
- Austrian Reference Centre for Diphtheria, Austrian Agency for Health and Food Safety, Vienna, Austria
| | - F Heger
- Austrian Reference Centre for Diphtheria, Austrian Agency for Health and Food Safety, Vienna, Austria
| | - A Indra
- Austrian Reference Centre for Diphtheria, Austrian Agency for Health and Food Safety, Vienna, Austria
| | - M Karolyi
- IV Medical Department with Infectious Diseases and Tropical Medicine, Clinic Favoriten, Kundratstraße 3, 1100, Vienna, Austria
| | - M Staudacher
- IV Medical Department with Infectious Diseases and Tropical Medicine, Clinic Favoriten, Kundratstraße 3, 1100, Vienna, Austria
| | - T Oelschlaegel
- IV Medical Department with Infectious Diseases and Tropical Medicine, Clinic Favoriten, Kundratstraße 3, 1100, Vienna, Austria
| | - W Hoepler
- IV Medical Department with Infectious Diseases and Tropical Medicine, Clinic Favoriten, Kundratstraße 3, 1100, Vienna, Austria
| | - S Neuhold
- IV Medical Department with Infectious Diseases and Tropical Medicine, Clinic Favoriten, Kundratstraße 3, 1100, Vienna, Austria
| | - C Wenisch
- IV Medical Department with Infectious Diseases and Tropical Medicine, Clinic Favoriten, Kundratstraße 3, 1100, Vienna, Austria
| |
Collapse
|
2
|
Traugott MT, Pleininger S, Inschlag-Tisch S, Eder B, Seitz T, Merrelaar A, Reiß-Kornfehl J, Fussi J, Schindler S, Blaschitz M, Heger F, Indra A, Karolyi M, Staudacher M, Oelschlaegel T, Hoepler W, Neuhold S, Wenisch C. A case of fulminant respiratory diphtheria in a 24-year-old Afghan refugee in Austria in May 2022: a case report. Infection 2022; 51:489-495. [PMID: 36178603 PMCID: PMC10042955 DOI: 10.1007/s15010-022-01926-4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 09/15/2022] [Indexed: 01/15/2023]
Abstract
PURPOSE Raising awareness of respiratory diphtheria and for the importance of early antitoxin administration. METHODS Report of a case of fulminant, imported respiratory diphtheria in an otherwise healthy 24-year-old Afghan refugee in Austria in May 2022. RESULT This was the first case of respiratory diphtheria in Austria since 1993. Diphtheria antitoxin was administered at an already progressed disease stage. This delay contributed to a fulminant disease course with multiorgan failure and death. CONCLUSION In high-income countries with low case numbers, awareness of respiratory diphtheria and for the importance of early antitoxin administration must be raised.
Collapse
Affiliation(s)
- M T Traugott
- IV Medical Department with Infectious Diseases and Tropical Medicine, Clinic Favoriten, Kundratstraße 3, 1100, Vienna, Austria.
| | - S Pleininger
- Austrian Reference Centre for Diphtheria, Austrian Agency for Health and Food Safety, Vienna, Austria
| | - S Inschlag-Tisch
- Department of Internal Medicine, Cardiology and Nephrology, Hospital of Wiener Neustadt, Wiener Neustadt, Austria
| | - B Eder
- IV Medical Department with Infectious Diseases and Tropical Medicine, Clinic Favoriten, Kundratstraße 3, 1100, Vienna, Austria
| | - T Seitz
- IV Medical Department with Infectious Diseases and Tropical Medicine, Clinic Favoriten, Kundratstraße 3, 1100, Vienna, Austria
| | - A Merrelaar
- IV Medical Department with Infectious Diseases and Tropical Medicine, Clinic Favoriten, Kundratstraße 3, 1100, Vienna, Austria
| | - J Reiß-Kornfehl
- Department of Otorhinolaryngology, Hospital of Wiener Neustadt, Wiener Neustadt, Austria
| | - J Fussi
- Department of Internal Medicine, Cardiology and Nephrology, Hospital of Wiener Neustadt, Wiener Neustadt, Austria
| | - S Schindler
- Austrian Reference Centre for Diphtheria, Austrian Agency for Health and Food Safety, Vienna, Austria
| | - M Blaschitz
- Austrian Reference Centre for Diphtheria, Austrian Agency for Health and Food Safety, Vienna, Austria
| | - F Heger
- Austrian Reference Centre for Diphtheria, Austrian Agency for Health and Food Safety, Vienna, Austria
| | - A Indra
- Austrian Reference Centre for Diphtheria, Austrian Agency for Health and Food Safety, Vienna, Austria
| | - M Karolyi
- IV Medical Department with Infectious Diseases and Tropical Medicine, Clinic Favoriten, Kundratstraße 3, 1100, Vienna, Austria
| | - M Staudacher
- IV Medical Department with Infectious Diseases and Tropical Medicine, Clinic Favoriten, Kundratstraße 3, 1100, Vienna, Austria
| | - T Oelschlaegel
- IV Medical Department with Infectious Diseases and Tropical Medicine, Clinic Favoriten, Kundratstraße 3, 1100, Vienna, Austria
| | - W Hoepler
- IV Medical Department with Infectious Diseases and Tropical Medicine, Clinic Favoriten, Kundratstraße 3, 1100, Vienna, Austria
| | - S Neuhold
- IV Medical Department with Infectious Diseases and Tropical Medicine, Clinic Favoriten, Kundratstraße 3, 1100, Vienna, Austria
| | - C Wenisch
- IV Medical Department with Infectious Diseases and Tropical Medicine, Clinic Favoriten, Kundratstraße 3, 1100, Vienna, Austria
| |
Collapse
|
3
|
Karolyi M, Pawelka E, Omid S, Koenig F, Kauer V, Rumpf B, Hoepler W, Kuran A, Laferl H, Seitz T, Traugott M, Rathkolb V, Mueller M, Abrahamowicz A, Schoergenhofer C, Hecking M, Assinger A, Wenisch C, Zeitlinger M, Jilma B, Zoufaly A. Camostat Mesylate Versus Lopinavir/Ritonavir in Hospitalized Patients With COVID-19—Results From a Randomized, Controlled, Open Label, Platform Trial (ACOVACT). Front Pharmacol 2022; 13:870493. [PMID: 35935856 PMCID: PMC9354138 DOI: 10.3389/fphar.2022.870493] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 06/14/2022] [Indexed: 01/08/2023] Open
Abstract
Background: To date, no oral antiviral drug has proven to be beneficial in hospitalized patients with COVID-19.Methods: In this randomized, controlled, open-label, platform trial, we randomly assigned patients ≥18 years hospitalized with COVID-19 pneumonia to receive either camostat mesylate (CM) (considered standard-of-care) or lopinavir/ritonavir (LPV/RTV). The primary endpoint was time to sustained clinical improvement (≥48 h) of at least one point on the 7-category WHO scale. Secondary endpoints included length of stay (LOS), need for mechanical ventilation (MV) or death, and 29-day mortality.Results: 201 patients were included in the study (101 CM and 100 LPV/RTV) between 20 April 2020 and 14 May 2021. Mean age was 58.7 years, and 67% were male. The median time from symptom onset to randomization was 7 days (IQR 5–9). Patients in the CM group had a significantly shorter time to sustained clinical improvement (HR = 0.67, 95%-CI 0.49–0.90; 9 vs. 11 days, p = 0.008) and demonstrated less progression to MV or death [6/101 (5.9%) vs. 15/100 (15%), p = 0.036] and a shorter LOS (12 vs. 14 days, p = 0.023). A statistically nonsignificant trend toward a lower 29-day mortality in the CM group than the LPV/RTV group [2/101 (2%) vs. 7/100 (7%), p = 0.089] was observed.Conclusion: In patients hospitalized for COVID-19, the use of CM was associated with shorter time to clinical improvement, reduced need for MV or death, and shorter LOS than the use of LPV/RTV. Furthermore, research is needed to confirm the efficacy of CM in larger placebo-controlled trials.Systematic Review Registration: [https://clinicaltrials.gov/ct2/show/NCT04351724, https://www.clinicaltrialsregister.eu/ctr-search/trial/2020-001302-30/AT], identifier [NCT04351724, EUDRACT-NR: 2020–001302-30].
Collapse
Affiliation(s)
- M. Karolyi
- Department for Infectious Diseases and Tropical Medicine, Klinik Favoriten, Vienna, Austria
- *Correspondence: M. Karolyi,
| | - E. Pawelka
- Department for Infectious Diseases and Tropical Medicine, Klinik Favoriten, Vienna, Austria
| | - S. Omid
- Department for Infectious Diseases and Tropical Medicine, Klinik Favoriten, Vienna, Austria
| | - F. Koenig
- Center for Medical Statistics, Informatics and Intelligent Systems, Medical University of Vienna, Vienna, Austria
| | - V. Kauer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - B. Rumpf
- Department of Internal Medicine III, Clinical Division of Nephrology and Dialysis, Medical University of Vienna, Vienna, Austria
| | - W. Hoepler
- Department for Infectious Diseases and Tropical Medicine, Klinik Favoriten, Vienna, Austria
| | - A. Kuran
- Department for Infectious Diseases and Tropical Medicine, Klinik Favoriten, Vienna, Austria
| | - H. Laferl
- Department for Infectious Diseases and Tropical Medicine, Klinik Favoriten, Vienna, Austria
| | - T. Seitz
- Department for Infectious Diseases and Tropical Medicine, Klinik Favoriten, Vienna, Austria
| | - M. Traugott
- Department for Infectious Diseases and Tropical Medicine, Klinik Favoriten, Vienna, Austria
| | - V. Rathkolb
- Department of Internal Medicine III, Clinical Division of Nephrology and Dialysis, Medical University of Vienna, Vienna, Austria
| | - M. Mueller
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - A. Abrahamowicz
- Faculty of Medicine, Sigmund Freud University, Vienna, Austria
| | - C. Schoergenhofer
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - M. Hecking
- Department of Internal Medicine III, Clinical Division of Nephrology and Dialysis, Medical University of Vienna, Vienna, Austria
| | - A. Assinger
- Department of Vascular Biology and Thrombosis Research, Center of Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
| | - C. Wenisch
- Department for Infectious Diseases and Tropical Medicine, Klinik Favoriten, Vienna, Austria
| | - M. Zeitlinger
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - B. Jilma
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
| | - A. Zoufaly
- Department for Infectious Diseases and Tropical Medicine, Klinik Favoriten, Vienna, Austria
- Faculty of Medicine, Sigmund Freud University, Vienna, Austria
| |
Collapse
|
4
|
Elbayomi M, Weyand M, Seitz T. Wearable Cardioverter Defibrillator (WCD) after Cardiac Surgery. Thorac Cardiovasc Surg 2022. [DOI: 10.1055/s-0042-1742807] [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: 10/19/2022]
Affiliation(s)
- M. Elbayomi
- University Hospital Erlangen, Erlangen, Deutschland
| | - M. Weyand
- Department of Cardiac Surgery, University Clinic Erlangen, Erlangen, Deutschland
| | - T. Seitz
- Herzchirurgie des Uni-Klinikums Erlangen, Krankenhausstraße, Erlangen, Germany, Erlangen, Deutschland
| |
Collapse
|
5
|
Laferl H, Kelani H, Seitz T, Holzer B, Zimpernik I, Steinrigl A, Schmoll F, Wenisch C, Allerberger F. An approach to lifting self-isolation for health care workers with prolonged shedding of SARS-CoV-2 RNA. Infection 2021; 49:95-101. [PMID: 33025521 PMCID: PMC7538033 DOI: 10.1007/s15010-020-01530-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 09/16/2020] [Indexed: 12/23/2022]
Abstract
PURPOSE According to the European Public Health Authority guidance for ending isolation in the context of COVID-19, a convalescent healthcare worker (HCW) can end their isolation at home and resume work upon clinical improvement and two negative RT-PCR tests from respiratory specimens obtained at 24-h intervals at least 8 days after the onset of symptoms. However, convalescent HCWs may shed SARS-CoV-2 viral RNA for prolonged periods. METHODS 40 healthy HCWs off work because of ongoing positive RT-PCR results in combined nasopharyngeal (NP) and oropharyngeal (OP) swabs following SARS-CoV-2 infection were invited to participate in this study. These HCWs had been in self-isolation because of a PCR-confirmed SARS-CoV-2 infection. NP and OP swabs as well as a blood sample were collected from each participant. RT-PCR and virus isolation was performed with each swab sample and serum neutralization test as well as two different ELISA tests were performed on all serum samples. RESULTS No viable virions could be detected in any of 29 nasopharyngeal and 29 oropharyngeal swabs taken from 15 long-time carriers. We found SARSCoV- 2 RNA in 14/29 nasopharyngeal and 10/29 oropharyngeal swabs obtained from screening 15 HCWs with previous COVID-19 up to 55 days after symptom onset. Six (40%) of the 15 initially positive HCWs converted to negative and later reverted to positive again according to their medical records. All but one HCW, a healthy volunteer banned from work, showed the presence of neutralizing antibodies in concomitantly taken blood samples. Late threshold cycle (Ct) values in RT-PCR [mean 37.4; median 37.3; range 30.8-41.7] and the lack of virus growth in cell culture indicate that despite the positive PCR results no infectivity remained. CONCLUSION We recommend lifting isolation if the RT-PCR Ct-value of a naso- or oropharyngeal swab sample is over 30. Positive results obtained from genes targeted with Ct-values > 30 correspond to non-viable/noninfectious particles that are still detected by RT-PCR. In case of Ct-values lower than 30, a blood sample from the patient should be tested for the presence of neutralizing antibodies. If positive, non-infectiousness can also be assumed.
Collapse
Affiliation(s)
- H Laferl
- 4th Medical Department with Infectious Diseases and Tropical Medicine, Kaiser Franz Josef Hospital, 1100, Vienna, Austria.
| | - H Kelani
- 4th Medical Department with Infectious Diseases and Tropical Medicine, Kaiser Franz Josef Hospital, 1100, Vienna, Austria
| | - T Seitz
- 4th Medical Department with Infectious Diseases and Tropical Medicine, Kaiser Franz Josef Hospital, 1100, Vienna, Austria
| | - B Holzer
- Austrian Agency for Health and Food Safety (AGES), Institute for Veterinary Disease Control Mödling, 2340, Mödling, Austria
| | - I Zimpernik
- Austrian Agency for Health and Food Safety (AGES), Institute for Veterinary Disease Control Mödling, 2340, Mödling, Austria
| | - A Steinrigl
- Austrian Agency for Health and Food Safety (AGES), Institute for Veterinary Disease Control Mödling, 2340, Mödling, Austria
| | - F Schmoll
- Austrian Agency for Health and Food Safety (AGES), Institute for Veterinary Disease Control Mödling, 2340, Mödling, Austria
| | - C Wenisch
- 4th Medical Department with Infectious Diseases and Tropical Medicine, Kaiser Franz Josef Hospital, 1100, Vienna, Austria
| | - F Allerberger
- Austrian Agency for Health and Food Safety (AGES), Institute for Veterinary Disease Control Mödling, 2340, Mödling, Austria
| |
Collapse
|
6
|
Karolyi M, Pawelka E, Kelani H, Funk GC, Lindner B, Porpaczy C, Publig S, Seitz T, Traugott M, Unterweger M, Zoufaly A, Wenisch C. Gender differences and influenza-associated mortality in hospitalized influenza A patients during the 2018/19 season. Infection 2020; 49:103-110. [PMID: 33090329 DOI: 10.1007/s15010-020-01537-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 10/05/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND In this study we analyzed gender differences in the clinical presentation of patients with molecular confirmed influenza A. Additionally, we tried to identify predictors of influenza-associated mortality. MATERIALS/METHODS In this prospective observational multi-center-study we included all influenza-positive patients ≥ 18 years who were hospitalized and treated on flu-isolation-wards in three hospitals in Vienna during the 2018/19 influenza season. Diagnoses were made via Cobas® Liat® POCT. RESULTS 490 Patients (48.8% female) tested positive for influenza A. Female patients were older (median age 76 years vs. 70 years, p < 0.001). Male patients had a higher rate of chronic liver disease in history (8.8% vs. 2.9%, p = 0.006), myositis (11.7% vs. 3.1%, p < 0.001) and ICU admissions (9.6% vs. 4.6%, p = 0.03). The in-hospital mortality rate was 4.3% and increased to 9.5% during the 90-day follow-up period. Female patients > 75 years had a significantly higher in-hospital mortality rate than ≤ 75-year-old females (9.2% vs. 1.7%, p = 0.019). This effect was not observed in male patients (5.4% vs. 1.9%, p = ns). Age > 75 years (OR 5.49, 95% CI 1.10-27.43), acute heart failure (OR 3.56, 95% CI 1.03-12.05) and ICU admission (OR 6.1, 95% CI 0.98-37.91) were predictors for in-hospital mortality for female patients, while any malignancy (OR 9.4, 95% CI 1.90-46.54) and ICU admission (OR 7.05, 95% CI 1.44-34.55) were predictors in male patients. CONCLUSIONS Gender is associated with differences in clinical presentation and complications of influenza A virus infection. Women with acute heart failure or aged > 75 years have an increased risk of influenza associated in-hospital mortality, while ICU admission and any malignancy are predictors for male patients. Mortality rates in patients > 75 years are 5-10 times higher compared to their non-hospitalized influenza-negative Austrian counterparts.
Collapse
Affiliation(s)
- Mario Karolyi
- Department for Infectious Diseases, Kaiser-Franz-Josef-Hospital (KFJ), Kundratstraße 3, 1100, Vienna, Austria.
| | - E Pawelka
- Department for Infectious Diseases, Kaiser-Franz-Josef-Hospital (KFJ), Kundratstraße 3, 1100, Vienna, Austria
| | - H Kelani
- Medical University of Vienna (MUW), Vienna, Austria
| | - G C Funk
- Medical Department II and Karl-Landsteiner Institute for Lung Research and Pulmonological Oncology, Wilheminen-Hospital (WSP), Vienna, Austria
| | - B Lindner
- Medical Department II, Center for Diagnosis and Treatment of Rheumatic Diseases, Hospital Hietzing, Vienna, Austria
| | - C Porpaczy
- Medical Department II, Center for Diagnosis and Treatment of Rheumatic Diseases, Hospital Hietzing, Vienna, Austria
| | - S Publig
- Medical Department II and Karl-Landsteiner Institute for Lung Research and Pulmonological Oncology, Wilheminen-Hospital (WSP), Vienna, Austria
| | - T Seitz
- Department for Infectious Diseases, Kaiser-Franz-Josef-Hospital (KFJ), Kundratstraße 3, 1100, Vienna, Austria
| | - M Traugott
- Department for Infectious Diseases, Kaiser-Franz-Josef-Hospital (KFJ), Kundratstraße 3, 1100, Vienna, Austria
| | - M Unterweger
- Department for Anesthesia and Surgical Intensive Care, Kaiser-Franz-Josef-Hospital (KFJ), Vienna, Austria
| | - A Zoufaly
- Department for Infectious Diseases, Kaiser-Franz-Josef-Hospital (KFJ), Kundratstraße 3, 1100, Vienna, Austria
| | - C Wenisch
- Department for Infectious Diseases, Kaiser-Franz-Josef-Hospital (KFJ), Kundratstraße 3, 1100, Vienna, Austria
| |
Collapse
|
7
|
Karolyi M, Pawelka E, Omid S, Kelani H, Mader T, Baumgartner S, Laferl H, Traugott M, Seitz T, Zoufaly A, Wenisch C. Late onset pulmonary embolism in young male otherwise healthy COVID-19 patients. Eur J Clin Microbiol Infect Dis 2020; 40:633-635. [PMID: 32965656 PMCID: PMC7509817 DOI: 10.1007/s10096-020-04044-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 09/18/2020] [Indexed: 11/29/2022]
Abstract
SARS-CoV-2 infection is associated with increased risk of thrombosis in severely ill patients but little is known about the risk in outpatients with mild to moderate disease. Our case series consists of four male otherwise healthy patients between 32 and 50 years of age. Initial symptoms completely resolved but they developed new onset of dyspnea and thoracic pain at days 14 to 26. CT scan revealed pulmonary embolism in all patients which led to hospitalization. Standard anticoagulation practice needs to be re-evaluated and may be considered for certain outpatients with COVID-19.
Collapse
Affiliation(s)
- M Karolyi
- Department for Infectious Diseases and Tropical Medicine, Kaiser-Franz-Josef Hospital, Kundratstraße 3, 1100, Vienna, Austria.
| | - E Pawelka
- Department for Infectious Diseases and Tropical Medicine, Kaiser-Franz-Josef Hospital, Kundratstraße 3, 1100, Vienna, Austria
| | - S Omid
- Department for Infectious Diseases and Tropical Medicine, Kaiser-Franz-Josef Hospital, Kundratstraße 3, 1100, Vienna, Austria
| | - H Kelani
- Department for Infectious Diseases and Tropical Medicine, Kaiser-Franz-Josef Hospital, Kundratstraße 3, 1100, Vienna, Austria
| | - T Mader
- Department for Infectious Diseases and Tropical Medicine, Kaiser-Franz-Josef Hospital, Kundratstraße 3, 1100, Vienna, Austria
| | - S Baumgartner
- Department for Infectious Diseases and Tropical Medicine, Kaiser-Franz-Josef Hospital, Kundratstraße 3, 1100, Vienna, Austria
| | - H Laferl
- Department for Infectious Diseases and Tropical Medicine, Kaiser-Franz-Josef Hospital, Kundratstraße 3, 1100, Vienna, Austria
| | - M Traugott
- Department for Infectious Diseases and Tropical Medicine, Kaiser-Franz-Josef Hospital, Kundratstraße 3, 1100, Vienna, Austria
| | - T Seitz
- Department for Infectious Diseases and Tropical Medicine, Kaiser-Franz-Josef Hospital, Kundratstraße 3, 1100, Vienna, Austria
| | - A Zoufaly
- Department for Infectious Diseases and Tropical Medicine, Kaiser-Franz-Josef Hospital, Kundratstraße 3, 1100, Vienna, Austria
| | - C Wenisch
- Department for Infectious Diseases and Tropical Medicine, Kaiser-Franz-Josef Hospital, Kundratstraße 3, 1100, Vienna, Austria
| |
Collapse
|
8
|
Siemon T, Wang Z, Bian G, Seitz T, Ye Z, Lu Y, Cheng S, Ding Y, Huang Y, Deng Z, Liu T, Christmann M. Semisynthesis of Plant-Derived Englerin A Enabled by Microbe Engineering of Guaia-6,10(14)-diene as Building Block. J Am Chem Soc 2020; 142:2760-2765. [PMID: 31999448 DOI: 10.1021/jacs.9b12940] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Herein, we report a short semisynthesis of the potent transient receptor potential canonical (TRPC) channel agonist englerin A (EA) and the related guaianes oxyphyllol and orientalol E. The guaia-6,10(14)-diene starting material was systematically engineered in Escherichia coli and Saccharomyces cerevisiae using the CRISPR/Cas9 system and was produced with high titers. The potentially scalable approach combines the advantages of synthetic biology and chemical synthesis providing an efficient and economical method for producing EA and analogues.
Collapse
Affiliation(s)
- Thomas Siemon
- Institute of Chemistry and Biochemistry , Freie Universität Berlin , Berlin 14195 , Germany
| | - Zhangqian Wang
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education and School of Pharmaceutical Sciences , Wuhan University , Wuhan , China
| | - Guangkai Bian
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education and School of Pharmaceutical Sciences , Wuhan University , Wuhan , China
| | - Tobias Seitz
- Institute of Chemistry and Biochemistry , Freie Universität Berlin , Berlin 14195 , Germany
| | - Ziling Ye
- J1 Biotech Co., Ltd. , Wuhan , China
| | - Yan Lu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education and School of Pharmaceutical Sciences , Wuhan University , Wuhan , China
| | - Shu Cheng
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education and School of Pharmaceutical Sciences , Wuhan University , Wuhan , China
| | - Yunkun Ding
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education and School of Pharmaceutical Sciences , Wuhan University , Wuhan , China
| | - Yanglei Huang
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education and School of Pharmaceutical Sciences , Wuhan University , Wuhan , China
| | - Zixin Deng
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education and School of Pharmaceutical Sciences , Wuhan University , Wuhan , China.,Hubei Engineering Laboratory for Synthetic Microbiology , Wuhan Institute of Biotechnology , Wuhan , China
| | - Tiangang Liu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education and School of Pharmaceutical Sciences , Wuhan University , Wuhan , China.,Hubei Engineering Laboratory for Synthetic Microbiology , Wuhan Institute of Biotechnology , Wuhan , China
| | - Mathias Christmann
- Institute of Chemistry and Biochemistry , Freie Universität Berlin , Berlin 14195 , Germany
| |
Collapse
|
9
|
Paasch U, Bäumler W, Seitz T, Grunewald S. Facharztgrundseminare „Laser in der Dermatologie“. Akt Dermatol 2018. [DOI: 10.1055/a-0644-9408] [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: 10/27/2022]
Abstract
ZusammenfassungLaser erfreuen sich umfänglicher Anwendung in der täglichen dermatologischen Routine, obwohl nahezu jede dermatologische Laserintervention durch andere Methoden ersetzt werden kann. Zudem sind Laser gefährlich, teuer, schwierig zu bedienen und erfordern ein hohes Maß an handwerklicher Geschicklichkeit. Nicht zuletzt bedarf es noch einiger Aufwände, die geforderten Zusatzqualifikationen zu erlangen, um dann allein Stück für Stück möglichst fehlerfrei praktische Erfahrung zu sammeln. Gut ausgebildet bietet die Laserintervention im Vergleich zu alternativen Optionen häufig den präziseren, schnelleren, ästhetischeren und eleganteren Therapieweg. Ziel der 2004 ins Leben gerufenen strukturierten Facharztgrundseminare war es, eine qualifizierte Ausbildungsplattform für diesen Spezialbereich der Dermatologie zu etablieren. Ausgewiesen wird dies durch das Zertifikat „Laser in der Dermatologie“.Es wird zu den Standards der Ausbildungsinhalte, der nunmehr 14-jährigen Praxiserfahrung und zu den mit neuen gesetzlichen Vorschriften notwendig werdenden Änderungen Stellung genommen.
Collapse
Affiliation(s)
- U. Paasch
- Klinik und Poliklinik für Dermatologie, Venerologie und Allergologie, Universitätsklinikum Leipzig AöR und Medizinische Fakultät der Universität Leipzig
| | - W. Bäumler
- Klinik und Poliklinik für Dermatologie, Universität Regensburg
| | - T. Seitz
- Klinik und Poliklinik für Dermatologie, Venerologie und Allergologie, Universitätsklinikum Leipzig AöR und Medizinische Fakultät der Universität Leipzig
| | - S. Grunewald
- Klinik und Poliklinik für Dermatologie, Venerologie und Allergologie, Universitätsklinikum Leipzig AöR und Medizinische Fakultät der Universität Leipzig
| |
Collapse
|
10
|
Rubaiy HN, Seitz T, Hahn S, Choidas A, Habenberger P, Klebl B, Dinkel K, Nussbaumer P, Waldmann H, Christmann M, Beech DJ. Identification of an (-)-englerin A analogue, which antagonizes (-)-englerin A at TRPC1/4/5 channels. Br J Pharmacol 2018; 175:830-839. [PMID: 29247460 PMCID: PMC5811624 DOI: 10.1111/bph.14128] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [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: 06/12/2017] [Revised: 11/30/2017] [Accepted: 12/01/2017] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND AND PURPOSE (-)-Englerin A (EA) is a potent cytotoxic agent against renal carcinoma cells. It achieves its effects by activation of transient receptor potential canonical (TRPC)4/TRPC1 heteromeric channels. It is also an agonist at channels formed by the related protein, TRPC5. Here, we sought an EA analogue, which might enable a better understanding of these effects of EA. EXPERIMENTAL APPROACH An EA analogue, A54, was synthesized by chemical elaboration of EA. The effects of EA and A54 on the activity of human TRPC4 or TRPC5 channels overexpressed on A498 and HEK 293 cells were investigated, firstly, by measuring intracellular Ca2+ and, secondly, current using whole-cell patch clamp recordings. KEY RESULTS A54 had weak or no agonist activity at endogenous TRPC4/TRPC1 channels in A498 cells or TRPC4 or TRPC5 homomeric channels overexpressed in HEK 293 cells. A54 strongly inhibited EA-mediated activation of TRPC4/TRPC1 or TRPC5 and weakly inhibited activation of TRPC4. Studies of TRPC5 showed that A54 shifted the EA concentration-response curve to the right without changing its slope, consistent with competitive antagonism. In contrast, Gd3+ -activated TRPC5 or sphingosine-1-phosphate-activated TRPC4 channels were not inhibited but potentiated by A54. A54 did not activate TRPC3 channels or affect the activation of these channels by the agonist 1-oleoyl-2-acetyl-sn-glycerol. CONCLUSIONS AND IMPLICATIONS This study has revealed a new tool compound for EA and TRPC1/4/5 channel research, which could be useful for characterizing endogenous TRPC1/4/5 channels and understanding EA-binding sites and their physiological relevance.
Collapse
Affiliation(s)
| | - Tobias Seitz
- Institute of Chemistry and BiochemistryFreie Universität BerlinBerlinGermany
| | - Sven Hahn
- Institute of Chemistry and BiochemistryFreie Universität BerlinBerlinGermany
| | | | | | - Bert Klebl
- Lead Discovery Center GmbHDortmundGermany
| | | | | | | | - Mathias Christmann
- Institute of Chemistry and BiochemistryFreie Universität BerlinBerlinGermany
| | | |
Collapse
|
11
|
Seitz T, Millán RE, Lentz D, Jiménez C, Rodríguez J, Christmann M. Synthesis of Thelepamide via Catalyst-Controlled 1,4-Addition of Cysteine Derivatives and Structure Revision of Thelepamide. Org Lett 2018; 20:594-597. [DOI: 10.1021/acs.orglett.7b03706] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tobias Seitz
- Freie Universität Berlin, Institute of Chemistry
and Biochemistry, Takustraße
3, 14195 Berlin, Germany
| | - Ramón E. Millán
- Centro
de Investigaciones Cientı́ficas Avanzadas (CICA), Departamento
de Quı́mica, Facultade de Ciencias, Universidade da Coruña, 15071 A Coruña, Spain
| | - Dieter Lentz
- Freie Universität Berlin, Institute of Chemistry
and Biochemistry, Takustraße
3, 14195 Berlin, Germany
| | - Carlos Jiménez
- Centro
de Investigaciones Cientı́ficas Avanzadas (CICA), Departamento
de Quı́mica, Facultade de Ciencias, Universidade da Coruña, 15071 A Coruña, Spain
| | - Jaime Rodríguez
- Centro
de Investigaciones Cientı́ficas Avanzadas (CICA), Departamento
de Quı́mica, Facultade de Ciencias, Universidade da Coruña, 15071 A Coruña, Spain
| | - Mathias Christmann
- Freie Universität Berlin, Institute of Chemistry
and Biochemistry, Takustraße
3, 14195 Berlin, Germany
| |
Collapse
|
12
|
Niemeyer P, Seitz T, Plaumann U, Wallner F, Wanke E, Ohlendorf D. Einfluss von „foam rolling“ des M. rectus femoris auf die Oberkörperstatik. Manuelle Medizin 2017. [DOI: 10.1007/s00337-017-0284-2] [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: 10/19/2022]
|
13
|
André M, Caballé A, van der Schaar M, Solsona A, Houégnigan L, Zaugg S, Sánchez AM, Castell JV, Solé M, Vila F, Djokic D, Adrián-Martínez S, Albert A, Anghinolfi M, Anton G, Ardid M, Aubert JJ, Avgitas T, Baret B, Barrios-Martí J, Basa S, Bertin V, Biagi S, Bormuth R, Bouwhuis MC, Bruijn R, Brunner J, Busto J, Capone A, Caramete L, Carr J, Celli S, Chiarusi T, Circella M, Coleiro A, Coniglione R, Costantini H, Coyle P, Creusot A, Deschamps A, De Bonis G, Distefano C, Di Palma I, Donzaud C, Dornic D, Drouhin D, Eberl T, El Bojaddaini I, Elsässer D, Enzenhöfer A, Fehn K, Felis I, Fusco LA, Galatà S, Gay P, Geißelsöder S, Geyer K, Giordano V, Gleixner A, Glotin H, Gracia-Ruiz R, Graf K, Hallmann S, van Haren H, Heijboer AJ, Hello Y, Hernandez-Rey JJ, Hößl J, Hofestädt J, Hugon C, Illuminati G, James CW, de Jong M, Jongen M, Kadler M, Kalekin O, Katz U, Kießling D, Kouchner A, Kreter M, Kreykenbohm I, Kulikovskiy V, Lachaud C, Lahmann R, Lefèvre D, Leonora E, Loucatos S, Marcelin M, Margiotta A, Marinelli A, Martínez-Mora JA, Mathieu A, Melis K, Michael T, Migliozzi P, Moussa A, Mueller C, Nezri E, Păvălaş GE, Pellegrino C, Perrina C, Piattelli P, Popa V, Pradier T, Racca C, Riccobene G, Roensch K, Saldaña M, Samtleben DFE, Sanguineti M, Sapienza P, Schnabel J, Schüssler F, Seitz T, Sieger C, Spurio M, Stolarczyk T, Sánchez-Losa A, Taiuti M, Trovato A, Tselengidou M, Turpin D, Tönnis C, Vallage B, Vallée C, Van Elewyck V, Vivolo D, Wagner S, Wilms J, Zornoza JD, Zuñiga J. Sperm whale long-range echolocation sounds revealed by ANTARES, a deep-sea neutrino telescope. Sci Rep 2017; 7:45517. [PMID: 28401960 PMCID: PMC5388847 DOI: 10.1038/srep45517] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [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] [Received: 11/08/2016] [Accepted: 02/14/2017] [Indexed: 11/09/2022] Open
Abstract
Despite dedicated research has been carried out to adequately map the distribution of the sperm whale in the Mediterranean Sea, unlike other regions of the world, the species population status is still presently uncertain. The analysis of two years of continuous acoustic data provided by the ANTARES neutrino telescope revealed the year-round presence of sperm whales in the Ligurian Sea, probably associated with the availability of cephalopods in the region. The presence of the Ligurian Sea sperm whales was demonstrated through the real-time analysis of audio data streamed from a cabled-to-shore deep-sea observatory that allowed the hourly tracking of their long-range echolocation behaviour on the Internet. Interestingly, the same acoustic analysis indicated that the occurrence of surface shipping noise would apparently not condition the foraging behaviour of the sperm whale in the area, since shipping noise was almost always present when sperm whales were acoustically detected. The continuous presence of the sperm whale in the region confirms the ecological value of the Ligurian sea and the importance of ANTARES to help monitoring its ecosystems.
Collapse
Affiliation(s)
- M André
- Technical University of Catalonia, BarcelonaTech (UPC), Laboratory of Applied Bioacoustics (LAB), Rambla Exposició, 24, 08800 Vilanova i la Geltru, Barcelona, Spain
| | - A Caballé
- Technical University of Catalonia, BarcelonaTech (UPC), Laboratory of Applied Bioacoustics (LAB), Rambla Exposició, 24, 08800 Vilanova i la Geltru, Barcelona, Spain
| | - M van der Schaar
- Technical University of Catalonia, BarcelonaTech (UPC), Laboratory of Applied Bioacoustics (LAB), Rambla Exposició, 24, 08800 Vilanova i la Geltru, Barcelona, Spain
| | - A Solsona
- Technical University of Catalonia, BarcelonaTech (UPC), Laboratory of Applied Bioacoustics (LAB), Rambla Exposició, 24, 08800 Vilanova i la Geltru, Barcelona, Spain
| | - L Houégnigan
- Technical University of Catalonia, BarcelonaTech (UPC), Laboratory of Applied Bioacoustics (LAB), Rambla Exposició, 24, 08800 Vilanova i la Geltru, Barcelona, Spain
| | - S Zaugg
- Technical University of Catalonia, BarcelonaTech (UPC), Laboratory of Applied Bioacoustics (LAB), Rambla Exposició, 24, 08800 Vilanova i la Geltru, Barcelona, Spain
| | - A M Sánchez
- Technical University of Catalonia, BarcelonaTech (UPC), Laboratory of Applied Bioacoustics (LAB), Rambla Exposició, 24, 08800 Vilanova i la Geltru, Barcelona, Spain
| | - J V Castell
- Technical University of Catalonia, BarcelonaTech (UPC), Laboratory of Applied Bioacoustics (LAB), Rambla Exposició, 24, 08800 Vilanova i la Geltru, Barcelona, Spain
| | - M Solé
- Technical University of Catalonia, BarcelonaTech (UPC), Laboratory of Applied Bioacoustics (LAB), Rambla Exposició, 24, 08800 Vilanova i la Geltru, Barcelona, Spain
| | - F Vila
- Technical University of Catalonia, BarcelonaTech (UPC), Laboratory of Applied Bioacoustics (LAB), Rambla Exposició, 24, 08800 Vilanova i la Geltru, Barcelona, Spain
| | - D Djokic
- Technical University of Catalonia, BarcelonaTech (UPC), Laboratory of Applied Bioacoustics (LAB), Rambla Exposició, 24, 08800 Vilanova i la Geltru, Barcelona, Spain
| | - S Adrián-Martínez
- Institut d'Investigació per a la Gestió Integrada de les Zones Costaneres (IGIC) - Universitat Politècnica de Valencia, C/Paranimf 1, 46730 Gandia, Spain
| | - A Albert
- GRPHE - Université de Haute Alsace - Institut universitaire de technologie de Colmar, 34 rue du Grillenbreit BP 50568 - 68008, Colmar, France
| | - M Anghinolfi
- INFN - Sezione di Genova, Via Dodecaneso 33, 16146 Genova, Italy
| | - G Anton
- Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen Centre for Astroparticle Physics, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany
| | - M Ardid
- Institut d'Investigació per a la Gestió Integrada de les Zones Costaneres (IGIC) - Universitat Politècnica de Valencia, C/Paranimf 1, 46730 Gandia, Spain
| | - J-J Aubert
- Aix-Marseille Université, CNRS/IN2P3, CPPM UMR 7346, 13288 Marseille, France
| | - T Avgitas
- APC, Université Paris Diderot, CNRS/IN2P3, CEA/IRFU, Observatoire de Paris, Sorbonne Paris Cité, 75205 Paris, France
| | - B Baret
- APC, Université Paris Diderot, CNRS/IN2P3, CEA/IRFU, Observatoire de Paris, Sorbonne Paris Cité, 75205 Paris, France
| | - J Barrios-Martí
- IFIC - Institut de Física Corpuscular (CSIC - Universitat de València) c/Catedrático José Beltran, 2 E-46980 Paterna, Valencia, Spain
| | - S Basa
- LAM - Laboratoire d'Astrophysique de Marseille, Pôle de l'Etoile Site de Château-Gombert, rue Frédéric Joliot-Curie 38, 13388 Marseille Cédex 13, France
| | - V Bertin
- Aix-Marseille Université, CNRS/IN2P3, CPPM UMR 7346, 13288 Marseille, France
| | - S Biagi
- INFN - Laboratori Nazionali del Sud (LNS), Via S. So a 62, 95123 Catania, Italy
| | - R Bormuth
- Nikhef, Science Park, Amsterdam, The Netherlands.,Huygens-Kamerlingh Onnes Laboratorium, Universiteit Leiden, The Netherlands
| | - M C Bouwhuis
- Nikhef, Science Park, Amsterdam, The Netherlands
| | - R Bruijn
- Nikhef, Science Park, Amsterdam, The Netherlands.,Universiteit van Amsterdam, Instituut voor Hoge-Energie Fysica, Science Park 105, 1098 XG Amsterdam, The Netherlands
| | - J Brunner
- Aix-Marseille Université, CNRS/IN2P3, CPPM UMR 7346, 13288 Marseille, France
| | - J Busto
- Aix-Marseille Université, CNRS/IN2P3, CPPM UMR 7346, 13288 Marseille, France
| | - A Capone
- INFN -Sezione di Roma, P.le Aldo Moro 2, 00185 Roma, Italy.,Dipartimento di Fisica dell'Universita La Sapienza, P.le Aldo Moro 2, 00185 Roma, Italy
| | - L Caramete
- Institute for Space Science, RO-077125 Bucharest, Magurele, Romania
| | - J Carr
- Aix-Marseille Université, CNRS/IN2P3, CPPM UMR 7346, 13288 Marseille, France
| | - S Celli
- INFN -Sezione di Roma, P.le Aldo Moro 2, 00185 Roma, Italy.,Dipartimento di Fisica dell'Universita La Sapienza, P.le Aldo Moro 2, 00185 Roma, Italy
| | - T Chiarusi
- INFN - Sezione di Bologna, Viale Berti-Pichat 6/2, 40127 Bologna, Italy
| | - M Circella
- INFN - Sezione di Bari, Via E. Orabona 4, 70126 Bari, Italy
| | - A Coleiro
- APC, Université Paris Diderot, CNRS/IN2P3, CEA/IRFU, Observatoire de Paris, Sorbonne Paris Cité, 75205 Paris, France
| | - R Coniglione
- INFN - Laboratori Nazionali del Sud (LNS), Via S. So a 62, 95123 Catania, Italy
| | - H Costantini
- Aix-Marseille Université, CNRS/IN2P3, CPPM UMR 7346, 13288 Marseille, France
| | - P Coyle
- Aix-Marseille Université, CNRS/IN2P3, CPPM UMR 7346, 13288 Marseille, France
| | - A Creusot
- APC, Université Paris Diderot, CNRS/IN2P3, CEA/IRFU, Observatoire de Paris, Sorbonne Paris Cité, 75205 Paris, France
| | - A Deschamps
- Geoazur, UCA, CNRS, IRD, Observatoire de la Côte d'Azur, Sophia Antipolis, France
| | - G De Bonis
- INFN -Sezione di Roma, P.le Aldo Moro 2, 00185 Roma, Italy.,Dipartimento di Fisica dell'Universita La Sapienza, P.le Aldo Moro 2, 00185 Roma, Italy
| | - C Distefano
- INFN - Laboratori Nazionali del Sud (LNS), Via S. So a 62, 95123 Catania, Italy
| | - I Di Palma
- INFN -Sezione di Roma, P.le Aldo Moro 2, 00185 Roma, Italy.,Dipartimento di Fisica dell'Universita La Sapienza, P.le Aldo Moro 2, 00185 Roma, Italy
| | - C Donzaud
- APC, Université Paris Diderot, CNRS/IN2P3, CEA/IRFU, Observatoire de Paris, Sorbonne Paris Cité, 75205 Paris, France.,Univ. Paris-Sud, 91405 Orsay Cedex, France
| | - D Dornic
- Aix-Marseille Université, CNRS/IN2P3, CPPM UMR 7346, 13288 Marseille, France
| | - D Drouhin
- GRPHE - Université de Haute Alsace - Institut universitaire de technologie de Colmar, 34 rue du Grillenbreit BP 50568 - 68008, Colmar, France
| | - T Eberl
- Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen Centre for Astroparticle Physics, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany
| | - I El Bojaddaini
- University Mohammed I, Laboratory of Physics of Matter and Radiations, B.P.717, Oujda 6000, Morocco
| | - D Elsässer
- Institut für Theoretische Physik und Astrophysik, Universität Wärzburg, Emil-Fischer Str. 31, 97074 Würzburg, Germany
| | - A Enzenhöfer
- Aix-Marseille Université, CNRS/IN2P3, CPPM UMR 7346, 13288 Marseille, France
| | - K Fehn
- Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen Centre for Astroparticle Physics, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany
| | - I Felis
- Institut d'Investigació per a la Gestió Integrada de les Zones Costaneres (IGIC) - Universitat Politècnica de Valencia, C/Paranimf 1, 46730 Gandia, Spain
| | - L A Fusco
- INFN - Sezione di Bologna, Viale Berti-Pichat 6/2, 40127 Bologna, Italy.,Dipartimento di Fisica e Astronomia dell'Universita, Viale Berti Pichat 6/2, 40127 Bologna, Italy
| | - S Galatà
- APC, Université Paris Diderot, CNRS/IN2P3, CEA/IRFU, Observatoire de Paris, Sorbonne Paris Cité, 75205 Paris, France
| | - P Gay
- APC, Université Paris Diderot, CNRS/IN2P3, CEA/IRFU, Observatoire de Paris, Sorbonne Paris Cité, 75205 Paris, France.,Laboratoire de Physique Corpusculaire, Clermont Université, Université Blaise Pascal, CNRS/IN2P3, BP 10448, F-63000 Clermont-Ferrand, France
| | - S Geißelsöder
- Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen Centre for Astroparticle Physics, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany
| | - K Geyer
- Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen Centre for Astroparticle Physics, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany
| | - V Giordano
- INFN - Sezione di Catania, Viale Andrea Doria 6, 95125 Catania, Italy
| | - A Gleixner
- Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen Centre for Astroparticle Physics, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany
| | - H Glotin
- LSIS, Aix Marseille Université CNRS ENSAM LSIS UMR 7296 13397 Marseille, France.,Université de Toulon CNRS LSIS UMR 7296 83957 La Garde, France.,Institut universitaire de France, 75005 Paris, France
| | - R Gracia-Ruiz
- APC, Université Paris Diderot, CNRS/IN2P3, CEA/IRFU, Observatoire de Paris, Sorbonne Paris Cité, 75205 Paris, France
| | - K Graf
- Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen Centre for Astroparticle Physics, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany
| | - S Hallmann
- Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen Centre for Astroparticle Physics, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany
| | - H van Haren
- Royal Netherlands Institute for Sea Research (NIOZ), Landsdiep 4, 1797 SZ 't Horntje (Texel), The Netherlands
| | - A J Heijboer
- Nikhef, Science Park, Amsterdam, The Netherlands
| | - Y Hello
- Geoazur, UCA, CNRS, IRD, Observatoire de la Côte d'Azur, Sophia Antipolis, France
| | - J J Hernandez-Rey
- IFIC - Institut de Física Corpuscular (CSIC - Universitat de València) c/Catedrático José Beltran, 2 E-46980 Paterna, Valencia, Spain
| | - J Hößl
- Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen Centre for Astroparticle Physics, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany
| | - J Hofestädt
- Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen Centre for Astroparticle Physics, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany
| | - C Hugon
- INFN - Sezione di Genova, Via Dodecaneso 33, 16146 Genova, Italy.,Dipartimento di Fisica dell'Universita, Via Dodecaneso 33, 16146 Genova, Italy
| | - G Illuminati
- IFIC - Institut de Física Corpuscular (CSIC - Universitat de València) c/Catedrático José Beltran, 2 E-46980 Paterna, Valencia, Spain.,INFN -Sezione di Roma, P.le Aldo Moro 2, 00185 Roma, Italy.,Dipartimento di Fisica dell'Universita La Sapienza, P.le Aldo Moro 2, 00185 Roma, Italy
| | - C W James
- Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen Centre for Astroparticle Physics, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany
| | - M de Jong
- Nikhef, Science Park, Amsterdam, The Netherlands.,Huygens-Kamerlingh Onnes Laboratorium, Universiteit Leiden, The Netherlands
| | - M Jongen
- Nikhef, Science Park, Amsterdam, The Netherlands
| | - M Kadler
- Institut für Theoretische Physik und Astrophysik, Universität Wärzburg, Emil-Fischer Str. 31, 97074 Würzburg, Germany
| | - O Kalekin
- Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen Centre for Astroparticle Physics, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany
| | - U Katz
- Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen Centre for Astroparticle Physics, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany
| | - D Kießling
- Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen Centre for Astroparticle Physics, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany
| | - A Kouchner
- APC, Université Paris Diderot, CNRS/IN2P3, CEA/IRFU, Observatoire de Paris, Sorbonne Paris Cité, 75205 Paris, France.,LSIS, Aix Marseille Université CNRS ENSAM LSIS UMR 7296 13397 Marseille, France.,Université de Toulon CNRS LSIS UMR 7296 83957 La Garde, France.,Institut universitaire de France, 75005 Paris, France
| | - M Kreter
- Institut für Theoretische Physik und Astrophysik, Universität Wärzburg, Emil-Fischer Str. 31, 97074 Würzburg, Germany
| | - I Kreykenbohm
- Dr. Remeis-Sternwarte and ECAP, Universitat Erlangen-Nurnberg, Sternwartstr. 7, 96049 Bamberg, Germany
| | - V Kulikovskiy
- INFN - Laboratori Nazionali del Sud (LNS), Via S. So a 62, 95123 Catania, Italy.,Moscow State University, Skobeltsyn Institute of Nuclear Physics, Leninskie gory, 119991 Moscow, Russia
| | - C Lachaud
- APC, Université Paris Diderot, CNRS/IN2P3, CEA/IRFU, Observatoire de Paris, Sorbonne Paris Cité, 75205 Paris, France
| | - R Lahmann
- Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen Centre for Astroparticle Physics, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany
| | - D Lefèvre
- Mediterranean Institute of Oceanography (MIO), Aix-Marseille University, 13288, Marseille, Cédex 9, France.,Université du Sud Toulon-Var, 83957 CNRS-INSU/IRD UM 110, La Garde Cédex, France
| | - E Leonora
- INFN - Sezione di Catania, Viale Andrea Doria 6, 95125 Catania, Italy.,Dipartimento di Fisica ed Astronomia dell'Universita, Viale Andrea Doria 6, 95125 Catania, Italy
| | - S Loucatos
- APC, Université Paris Diderot, CNRS/IN2P3, CEA/IRFU, Observatoire de Paris, Sorbonne Paris Cité, 75205 Paris, France.,Direction des Sciences de la Matière - Institut de recherche sur les lois fondamentales de l'Univers - Service de Physique des Particules, CEA Saclay, 91191 Gif-sur-Yvette Cédex, France
| | - M Marcelin
- LAM - Laboratoire d'Astrophysique de Marseille, Pôle de l'Etoile Site de Château-Gombert, rue Frédéric Joliot-Curie 38, 13388 Marseille Cédex 13, France
| | - A Margiotta
- INFN - Sezione di Bologna, Viale Berti-Pichat 6/2, 40127 Bologna, Italy.,Dipartimento di Fisica e Astronomia dell'Universita, Viale Berti Pichat 6/2, 40127 Bologna, Italy
| | - A Marinelli
- INFN - Sezione di Pisa, Largo B. Pontecorvo 3, 56127 Pisa, Italy.,Dipartimento di Fisica dell'Universita, Largo B. Pontecorvo 3, 56127 Pisa, Italy
| | - J A Martínez-Mora
- Institut d'Investigació per a la Gestió Integrada de les Zones Costaneres (IGIC) - Universitat Politècnica de Valencia, C/Paranimf 1, 46730 Gandia, Spain
| | - A Mathieu
- Aix-Marseille Université, CNRS/IN2P3, CPPM UMR 7346, 13288 Marseille, France
| | - K Melis
- Nikhef, Science Park, Amsterdam, The Netherlands.,Universiteit van Amsterdam, Instituut voor Hoge-Energie Fysica, Science Park 105, 1098 XG Amsterdam, The Netherlands
| | - T Michael
- Nikhef, Science Park, Amsterdam, The Netherlands
| | - P Migliozzi
- INFN -Sezione di Napoli, Via Cintia 80126 Napoli, Italy
| | - A Moussa
- University Mohammed I, Laboratory of Physics of Matter and Radiations, B.P.717, Oujda 6000, Morocco
| | - C Mueller
- Institut für Theoretische Physik und Astrophysik, Universität Wärzburg, Emil-Fischer Str. 31, 97074 Würzburg, Germany
| | - E Nezri
- LAM - Laboratoire d'Astrophysique de Marseille, Pôle de l'Etoile Site de Château-Gombert, rue Frédéric Joliot-Curie 38, 13388 Marseille Cédex 13, France
| | - G E Păvălaş
- Institute for Space Science, RO-077125 Bucharest, Magurele, Romania
| | - C Pellegrino
- INFN - Sezione di Bologna, Viale Berti-Pichat 6/2, 40127 Bologna, Italy.,Dipartimento di Fisica e Astronomia dell'Universita, Viale Berti Pichat 6/2, 40127 Bologna, Italy
| | - C Perrina
- INFN -Sezione di Roma, P.le Aldo Moro 2, 00185 Roma, Italy.,Dipartimento di Fisica dell'Universita La Sapienza, P.le Aldo Moro 2, 00185 Roma, Italy
| | - P Piattelli
- INFN - Laboratori Nazionali del Sud (LNS), Via S. So a 62, 95123 Catania, Italy
| | - V Popa
- Institute for Space Science, RO-077125 Bucharest, Magurele, Romania
| | - T Pradier
- Université de Strasbourg, IPHC, 23 rue du Loess 67037 Strasbourg, France.,CNRS, UMR7178, 67037 Strasbourg, France
| | - C Racca
- GRPHE - Université de Haute Alsace - Institut universitaire de technologie de Colmar, 34 rue du Grillenbreit BP 50568 - 68008, Colmar, France
| | - G Riccobene
- INFN - Laboratori Nazionali del Sud (LNS), Via S. So a 62, 95123 Catania, Italy
| | - K Roensch
- Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen Centre for Astroparticle Physics, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany
| | - M Saldaña
- Institut d'Investigació per a la Gestió Integrada de les Zones Costaneres (IGIC) - Universitat Politècnica de Valencia, C/Paranimf 1, 46730 Gandia, Spain
| | - D F E Samtleben
- Nikhef, Science Park, Amsterdam, The Netherlands.,Huygens-Kamerlingh Onnes Laboratorium, Universiteit Leiden, The Netherlands
| | - M Sanguineti
- INFN - Sezione di Genova, Via Dodecaneso 33, 16146 Genova, Italy.,Dipartimento di Fisica dell'Universita, Via Dodecaneso 33, 16146 Genova, Italy
| | - P Sapienza
- INFN - Laboratori Nazionali del Sud (LNS), Via S. So a 62, 95123 Catania, Italy
| | - J Schnabel
- Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen Centre for Astroparticle Physics, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany
| | - F Schüssler
- Direction des Sciences de la Matière - Institut de recherche sur les lois fondamentales de l'Univers - Service de Physique des Particules, CEA Saclay, 91191 Gif-sur-Yvette Cédex, France
| | - T Seitz
- Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen Centre for Astroparticle Physics, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany
| | - C Sieger
- Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen Centre for Astroparticle Physics, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany
| | - M Spurio
- INFN - Sezione di Bologna, Viale Berti-Pichat 6/2, 40127 Bologna, Italy.,Dipartimento di Fisica e Astronomia dell'Universita, Viale Berti Pichat 6/2, 40127 Bologna, Italy
| | - Th Stolarczyk
- Direction des Sciences de la Matière - Institut de recherche sur les lois fondamentales de l'Univers - Service de Physique des Particules, CEA Saclay, 91191 Gif-sur-Yvette Cédex, France
| | - A Sánchez-Losa
- INFN - Laboratori Nazionali del Sud (LNS), Via S. So a 62, 95123 Catania, Italy.,INFN - Sezione di Bari, Via E. Orabona 4, 70126 Bari, Italy
| | - M Taiuti
- INFN - Sezione di Genova, Via Dodecaneso 33, 16146 Genova, Italy.,Dipartimento di Fisica dell'Universita, Via Dodecaneso 33, 16146 Genova, Italy
| | - A Trovato
- INFN - Laboratori Nazionali del Sud (LNS), Via S. So a 62, 95123 Catania, Italy
| | - M Tselengidou
- Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen Centre for Astroparticle Physics, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany
| | - D Turpin
- Aix-Marseille Université, CNRS/IN2P3, CPPM UMR 7346, 13288 Marseille, France
| | - C Tönnis
- IFIC - Institut de Física Corpuscular (CSIC - Universitat de València) c/Catedrático José Beltran, 2 E-46980 Paterna, Valencia, Spain
| | - B Vallage
- Technical University of Catalonia, BarcelonaTech (UPC), Laboratory of Applied Bioacoustics (LAB), Rambla Exposició, 24, 08800 Vilanova i la Geltru, Barcelona, Spain.,Direction des Sciences de la Matière - Institut de recherche sur les lois fondamentales de l'Univers - Service de Physique des Particules, CEA Saclay, 91191 Gif-sur-Yvette Cédex, France
| | - C Vallée
- Aix-Marseille Université, CNRS/IN2P3, CPPM UMR 7346, 13288 Marseille, France
| | - V Van Elewyck
- APC, Université Paris Diderot, CNRS/IN2P3, CEA/IRFU, Observatoire de Paris, Sorbonne Paris Cité, 75205 Paris, France
| | - D Vivolo
- INFN -Sezione di Napoli, Via Cintia 80126 Napoli, Italy.,Dipartimento di Fisica dell'Universita Federico II di Napoli, Via Cintia 80126, Napoli, Italy
| | - S Wagner
- Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen Centre for Astroparticle Physics, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany
| | - J Wilms
- Dr. Remeis-Sternwarte and ECAP, Universitat Erlangen-Nurnberg, Sternwartstr. 7, 96049 Bamberg, Germany
| | - J D Zornoza
- IFIC - Institut de Física Corpuscular (CSIC - Universitat de València) c/Catedrático José Beltran, 2 E-46980 Paterna, Valencia, Spain
| | - J Zuñiga
- IFIC - Institut de Física Corpuscular (CSIC - Universitat de València) c/Catedrático José Beltran, 2 E-46980 Paterna, Valencia, Spain
| |
Collapse
|
14
|
Seitz T, Fu P, Haut FL, Adam L, Habicht M, Lentz D, MacMillan JB, Christmann M. One-Pot Synthesis of 5-Hydroxy-4H-1,3-thiazin-4-ones: Structure Revision, Synthesis, and NMR Shift Dependence of Thiasporine A. Org Lett 2016; 18:3070-3. [DOI: 10.1021/acs.orglett.6b01166] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tobias Seitz
- Institute
of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße
3, 14195 Berlin, Germany
| | - Peng Fu
- Department
of Biochemistry, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390, United States
| | - Franz-Lucas Haut
- Institute
of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße
3, 14195 Berlin, Germany
| | - Lutz Adam
- Institute
of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße
3, 14195 Berlin, Germany
| | - Marija Habicht
- Institute
of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße
3, 14195 Berlin, Germany
| | - Dieter Lentz
- Institute
of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße
3, 14195 Berlin, Germany
| | - John B. MacMillan
- Department
of Biochemistry, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390, United States
| | - Mathias Christmann
- Institute
of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße
3, 14195 Berlin, Germany
| |
Collapse
|
15
|
Akbulut Y, Gaunt HJ, Muraki K, Ludlow MJ, Amer MS, Bruns A, Vasudev NS, Radtke L, Willot M, Hahn S, Seitz T, Ziegler S, Christmann M, Beech DJ, Waldmann H. (-)-Englerin A is a potent and selective activator of TRPC4 and TRPC5 calcium channels. Angew Chem Int Ed Engl 2015; 54:3787-91. [PMID: 25707820 PMCID: PMC7116557 DOI: 10.1002/anie.201411511] [Citation(s) in RCA: 145] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Indexed: 12/21/2022]
Abstract
Current therapies for common types of cancer such as renal cell cancer are often ineffective and unspecific, and novel pharmacological targets and approaches are in high demand. Here we show the unexpected possibility for the rapid and selective killing of renal cancer cells through activation of calcium-permeable nonselective transient receptor potential canonical (TRPC) calcium channels by the sesquiterpene (-)-englerin A. This compound was found to be a highly efficient, fast-acting, potent, selective, and direct stimulator of TRPC4 and TRPC5 channels. TRPC4/5 activation through a high-affinity extracellular (-)-englerin A binding site may open up novel opportunities for drug discovery aimed at renal cancer.
Collapse
Affiliation(s)
- Yasemin Akbulut
- Max-Planck-Institut für Molekulare Physiologie, Otto-Hahn-Straße 11, 44227 Dortmund, Germany, Tel. +49 (0) 231-133-2400
- Technische Universität Dortmund, Fakultät Chemie, Lehrbereich Chemische Biologie, Otto-Hahn-Straße 6, 44227 Dortmund, Germany
| | - Hannah J Gaunt
- School of Medicine, Garstang Building, Mount Preston Street, University of Leeds, Leeds, LS2 9JT, England, UK; Tel +44 (0) 113 34 34323
| | - Katsuhiko Muraki
- School of Pharmacy, Aichi-Gakuin University, 1-100 Kusumoto, Chikusa, Nagoya 464-8650, Japan
| | - Melanie J Ludlow
- School of Medicine, Garstang Building, Mount Preston Street, University of Leeds, Leeds, LS2 9JT, England, UK; Tel +44 (0) 113 34 34323
| | - Mohamed S Amer
- School of Medicine, Garstang Building, Mount Preston Street, University of Leeds, Leeds, LS2 9JT, England, UK; Tel +44 (0) 113 34 34323
- Clinical Physiology Department, Faculty of Medicine, Menoufiya University, Egypt
| | - Alexander Bruns
- School of Medicine, Garstang Building, Mount Preston Street, University of Leeds, Leeds, LS2 9JT, England, UK; Tel +44 (0) 113 34 34323
| | - Naveen S Vasudev
- School of Medicine, Garstang Building, Mount Preston Street, University of Leeds, Leeds, LS2 9JT, England, UK; Tel +44 (0) 113 34 34323
| | - Lea Radtke
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße 3, 14195 Berlin, Germany, Tel +49 (0) 30 83860182
| | - Matthieu Willot
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße 3, 14195 Berlin, Germany, Tel +49 (0) 30 83860182
| | - Sven Hahn
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße 3, 14195 Berlin, Germany, Tel +49 (0) 30 83860182
| | - Tobias Seitz
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße 3, 14195 Berlin, Germany, Tel +49 (0) 30 83860182
| | - Slava Ziegler
- Max-Planck-Institut für Molekulare Physiologie, Otto-Hahn-Straße 11, 44227 Dortmund, Germany, Tel. +49 (0) 231-133-2400
| | - Mathias Christmann
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustraße 3, 14195 Berlin, Germany, Tel +49 (0) 30 83860182
| | - David J Beech
- School of Medicine, Garstang Building, Mount Preston Street, University of Leeds, Leeds, LS2 9JT, England, UK; Tel +44 (0) 113 34 34323
| | - Herbert Waldmann
- Max-Planck-Institut für Molekulare Physiologie, Otto-Hahn-Straße 11, 44227 Dortmund, Germany, Tel. +49 (0) 231-133-2400
- Technische Universität Dortmund, Fakultät Chemie, Lehrbereich Chemische Biologie, Otto-Hahn-Straße 6, 44227 Dortmund, Germany
| |
Collapse
|
16
|
Akbulut Y, Gaunt HJ, Muraki K, Ludlow MJ, Amer MS, Bruns A, Vasudev NS, Radtke L, Willot M, Hahn S, Seitz T, Ziegler S, Christmann M, Beech DJ, Waldmann H. (−)-Englerin A is a Potent and Selective Activator of TRPC4 and TRPC5 Calcium Channels. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411511] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
17
|
Ballazhi F, Feyrer R, Harig F, Seitz T, Kondruweit M, Weyand M. Clinical and Rhythm Outcome of Surgical Ablation versus Non Ablation in Patients with Atrial Fibrillation during Mitral Valve Surgery. Thorac Cardiovasc Surg 2015. [DOI: 10.1055/s-0035-1544275] [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: 10/24/2022]
|
18
|
Ballazhi F, Tandler R, Harig F, Feyrer R, Kondruweit M, Seitz T, Strecker T, Weyand M. Surgical outcome of right-sided infective endocarditis (IE): Which patients for which procedure? Thorac Cardiovasc Surg 2014. [DOI: 10.1055/s-0034-1367407] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
19
|
Sommer B, Waege I, Pöllmann D, Seitz T, Thomm M, Sterner R, Hausner W. Activation of a chimeric Rpb5/RpoH subunit using library selection. PLoS One 2014; 9:e87485. [PMID: 24489922 PMCID: PMC3906176 DOI: 10.1371/journal.pone.0087485] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Accepted: 12/29/2013] [Indexed: 11/19/2022] Open
Abstract
Rpb5 is a general subunit of all eukaryotic RNA polymerases which consists of a N-terminal and a C-terminal domain. The corresponding archaeal subunit RpoH contains only the conserved C-terminal domain without any N-terminal extensions. A chimeric construct, termed rp5H, which encodes the N-terminal yeast domain and the C-terminal domain from Pyrococcus furiosus is unable to complement the lethal phenotype of a yeast rpb5 deletion strain (Δrpb5). By applying a random mutagenesis approach we found that the amino acid exchange E197K in the C-terminal domain of the chimeric Rp5H, either alone or with additional exchanges in the N-terminal domain, leads to heterospecific complementation of the growth deficiency of Δrpb5. Moreover, using a recently described genetic system for Pyrococcus we could demonstrate that the corresponding exchange E62K in the archaeal RpoH subunit alone without the eukaryotic N-terminal extension was stable, and growth experiments indicated no obvious impairment in vivo. In vitro transcription experiments with purified RNA polymerases showed an identical activity of the wild type and the mutant Pyrococcus RNA polymerase. A multiple alignment of RpoH sequences demonstrated that E62 is present in only a few archaeal species, whereas the great majority of sequences within archaea and eukarya contain a positively charged amino acid at this position. The crystal structures of the Sulfolobus and yeast RNA polymerases show that the positively charged arginine residues in subunits RpoH and Rpb5 most likely form salt bridges with negatively charged residues from subunit RpoK and Rpb1, respectively. A similar salt bridge might stabilize the interaction of Rp5H-E197K with a neighboring subunit of yeast RNA polymerase and thus lead to complementation of Δrpb5.
Collapse
Affiliation(s)
- Bettina Sommer
- Institute of Biophysics and Physical Biochemistry, University of Regensburg, Regensburg, Germany
| | - Ingrid Waege
- Institute of Microbiology and Archaea Center, University of Regensburg, Regensburg, Germany
| | - David Pöllmann
- Institute of Microbiology and Archaea Center, University of Regensburg, Regensburg, Germany
| | - Tobias Seitz
- Institute of Biophysics and Physical Biochemistry, University of Regensburg, Regensburg, Germany
| | - Michael Thomm
- Institute of Microbiology and Archaea Center, University of Regensburg, Regensburg, Germany
| | - Reinhard Sterner
- Institute of Biophysics and Physical Biochemistry, University of Regensburg, Regensburg, Germany
- * E-mail: (RS); (WH)
| | - Winfried Hausner
- Institute of Microbiology and Archaea Center, University of Regensburg, Regensburg, Germany
- * E-mail: (RS); (WH)
| |
Collapse
|
20
|
Koert U, Seitz T, Harms K. Vic-Tricarbonyl Compounds: Synthesis of (±)-9-epi-Wailupemycin A. SYNTHESIS-STUTTGART 2014. [DOI: 10.1055/s-0033-1338586] [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: 10/25/2022]
|
21
|
|
22
|
Ballazhi F, Harig F, Seitz T, Weyand M, Feyrer R. Long-term outcome (up to 4 years follow-up) of Ultrasonic Cardiac Ablation for atrial fibrillation during concomitant cardiac surgery: Impact of antiarrythmics after HIFU-Ablation. Thorac Cardiovasc Surg 2013. [DOI: 10.1055/s-0032-1332423] [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: 10/27/2022]
|
23
|
Fischer A, Seitz T, Lochner A, Sterner R, Merkl R, Bocola M. A fast and precise approach for computational saturation mutagenesis and its experimental validation by using an artificial (βα)8-barrel protein. Chembiochem 2011; 12:1544-50. [PMID: 21626637 DOI: 10.1002/cbic.201100051] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2011] [Indexed: 11/09/2022]
Abstract
We present a computational saturation mutagenesis protocol (CoSM) that predicts the impact on stability of all possible amino acid substitutions for a given site at an internal protein interface. CoSM is an efficient algorithm that uses a combination of rotamer libraries, side-chain flips, energy minimization, and molecular dynamics equilibration. Because CoSM considers full side-chain and backbone flexibility in the local environment of the mutated position, amino acids larger than the wild-type residue are also modeled in a proper manner. To assess the performance of CoSM, the effect of point mutations on the stability of an artificial (βα)(8)-barrel protein that has been designed from identical (βα)(4)-half barrels, was studied. In this protein, position 234(N) is a previously identified stability hot-spot that is located at the interface of the two half barrels. By using CoSM, changes in protein stability were predicted for all possible single point mutations replacing wild-type Val234(N). In parallel, the stabilities of 14 representative mutants covering all amino acid classes were experimentally determined. A linear correlation of computationally and experimentally determined energy values yielded an R(2) value of 0.90, which is statistically significant. This degree of coherence is stronger than the ones we obtained for established computational methods of mutational analysis.
Collapse
Affiliation(s)
- Andre Fischer
- Institut für Biophysik und Physikalische Biochemie, Universität Regensburg, Regensburg, Germany
| | | | | | | | | | | |
Collapse
|
24
|
Richter M, Bosnali M, Carstensen L, Seitz T, Durchschlag H, Blanquart S, Merkl R, Sterner R. Computational and Experimental Evidence for the Evolution of a (βα)8-Barrel Protein from an Ancestral Quarter-Barrel Stabilised by Disulfide Bonds. J Mol Biol 2010; 398:763-73. [DOI: 10.1016/j.jmb.2010.03.057] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2010] [Revised: 03/19/2010] [Accepted: 03/26/2010] [Indexed: 11/28/2022]
|
25
|
Rörick O, Seitz T, Reimann A, Feyrer R, Weyand M. Sorin Freedom Solo® vs. Edwards Mitroflow®: a one year follow up. Thorac Cardiovasc Surg 2010. [DOI: 10.1055/s-0029-1246724] [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]
|
26
|
Höcker B, Lochner A, Seitz T, Claren J, Sterner R. High-Resolution Crystal Structure of an Artificial (βα)8-Barrel Protein Designed from Identical Half-Barrels. Biochemistry 2009; 48:1145-7. [DOI: 10.1021/bi802125b] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Birte Höcker
- Max Planck Institute for Developmental Biology, Spemannstrasse 35, D-72076 Tübingen, Germany, and Institute of Biophysics and Physical Biochemistry, University of Regensburg, Universitätsstrasse 31, D-93053 Regensburg, Germany
| | - Adriane Lochner
- Max Planck Institute for Developmental Biology, Spemannstrasse 35, D-72076 Tübingen, Germany, and Institute of Biophysics and Physical Biochemistry, University of Regensburg, Universitätsstrasse 31, D-93053 Regensburg, Germany
| | - Tobias Seitz
- Max Planck Institute for Developmental Biology, Spemannstrasse 35, D-72076 Tübingen, Germany, and Institute of Biophysics and Physical Biochemistry, University of Regensburg, Universitätsstrasse 31, D-93053 Regensburg, Germany
| | - Jörg Claren
- Max Planck Institute for Developmental Biology, Spemannstrasse 35, D-72076 Tübingen, Germany, and Institute of Biophysics and Physical Biochemistry, University of Regensburg, Universitätsstrasse 31, D-93053 Regensburg, Germany
| | - Reinhard Sterner
- Max Planck Institute for Developmental Biology, Spemannstrasse 35, D-72076 Tübingen, Germany, and Institute of Biophysics and Physical Biochemistry, University of Regensburg, Universitätsstrasse 31, D-93053 Regensburg, Germany
| |
Collapse
|
27
|
Feher L, Seitz T, Nuss V. Microwave de-/anti-icing using the midas-technology. J Microw Power Electromagn Energy 2009; 43:56-59. [PMID: 21384724 DOI: 10.1080/08327823.2008.11688606] [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] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
For aviation, a suitable alternative for currently used in-flight anti-/de-icing technologies for today's aircrafts with metal structures and future aircrafts with replaced composite structures is necessary. Intense investigations performed at FZK have been together in collaboration with aircraft manufacturers to design and develop a new avionic microwave technology for monolithic composite structures.The full system integration has been evaluated for several airplanes considering the structural and efficiency demands. The concept of this MIDAS (MIcrowave De-icing Anti-icing System) technology as well their recent results will be presented. A full system integration has been tested and is visualized in the paper.
Collapse
Affiliation(s)
- L Feher
- Universität Karlsruhe, IHE, D-76128 Karlsruhe, Germany.
| | | | | |
Collapse
|
28
|
Seitz T, Dietz P, Lohrengel A. Werkstoffauswahl für transportable Zerkleinerungseinrichtungen. CHEM-ING-TECH 2008. [DOI: 10.1002/cite.200750683] [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: 11/11/2022]
|
29
|
Seitz T, Bocola M, Claren J, Sterner R. Stabilisation of a (betaalpha)8-barrel protein designed from identical half barrels. J Mol Biol 2007; 372:114-29. [PMID: 17631894 DOI: 10.1016/j.jmb.2007.06.036] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2007] [Revised: 06/05/2007] [Accepted: 06/13/2007] [Indexed: 11/26/2022]
Abstract
It has been suggested that the common (betaalpha)(8)-barrel enzyme fold has evolved by the duplication and fusion of identical (betaalpha)(4)-half barrels, followed by the optimisation of their interface. In our attempts to reconstruct these events in vitro we have previously linked in tandem two copies of the C-terminal half barrel HisF-C of imidazole glycerol phosphate synthase from Thermotoga maritima and subsequently reconstituted in the fusion construct HisF-CC a salt bridge cluster present in wild-type HisF. The resulting recombinant protein HisF-C*C, which was produced in an insoluble form and unfolded with low cooperativity at moderate urea concentrations has now been stabilised and solubilised by a combination of random mutagenesis and selection in vivo. For this purpose, Escherichia coli cells were transformed with a plasmid-based gene library encoding HisF-C*C variants fused to chloramphenicol acetyltransferase (CAT). Stable and soluble variants were identified by the survival of host cells on solid medium containing high concentrations of the antibiotic. The selected HisF-C*C proteins, which were characterised in vitro in the absence of CAT, contained eight different amino acid substitutions. One of the exchanges (Y143C) stabilised HisF-C*C by the formation of an intermolecular disulfide bond. Three of the substitutions (G245R, V248M, L250Q) were located in the long loop connecting the two HisF-C copies, whose subsequent truncation from 13 to 5 residues yielded the stabilised variant HisF-C*C Delta. From the remaining substitutions, Y143H and V234M were most beneficial, and molecular dynamics simulations suggest that they strengthen the interactions between the half barrels by establishing a hydrogen-bonding network and an extensive hydrophobic cluster, respectively. By combining the loop deletion of HisF-C*C Delta with the Y143H and V234M substitutions, the variant HisF-C**C was generated. Recombinant HisF-C**C is produced in soluble form, forms a pure monomer with its tryptophan residues shielded from solvent and unfolds with similar cooperativity as HisF. Our results show that, starting from two identical and fused half barrels, few amino acid exchanges are sufficient to generate a highly stable and compact (betaalpha)(8)-barrel protein with wild-type like structural properties.
Collapse
Affiliation(s)
- Tobias Seitz
- Institute of Biophysics and Physical Biochemistry, University of Regensburg, Universitätsstrasse 31, D-93053 Regensburg, Germany
| | | | | | | |
Collapse
|
30
|
Marcos P, Seitz T, Bubb H, Wichert A, Feussner H. Computer simulation for ergonomic improvements in laparoscopic surgery. Appl Ergon 2006; 37:251-258. [PMID: 16359635 DOI: 10.1016/j.apergo.2005.09.003] [Citation(s) in RCA: 7] [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] [Subscribe] [Scholar Register] [Accepted: 09/15/2005] [Indexed: 05/05/2023]
Abstract
It is the aim of this study to reduce the stress and strain of the medical staff during laparoscopic operations, and, simultaneously, to increase the safety and efficiency of an integrated operation room (OR) by an ergonomic redesign. This was attempted by a computer simulation approach using free modelling of the OR and 3D human models (manikins). After defining ergonomically "ideal" postures, optimal solutions for key elements of an ergonomic design of the OR (position and height of the image displays, height of the OR table and the Mayo stand) could be evaluated with special regard to the different individual body size of each member of the team. These data should be useful for the development of team adapted, user friendly integrated OR suites of the future.
Collapse
Affiliation(s)
- Patricia Marcos
- Chirurgische Klinik und Poliklinik, Klinikum rechts der Isar, Technische Universität München, Ismaninger Straße 22, 81675 München, Germany
| | - T Seitz
- Chirurgische Klinik und Poliklinik, Klinikum rechts der Isar, Technische Universität München, Ismaninger Straße 22, 81675 München, Germany; Lehrstuhl für Ergonomie, Technische Universität München, Germany
| | - H Bubb
- Chirurgische Klinik und Poliklinik, Klinikum rechts der Isar, Technische Universität München, Ismaninger Straße 22, 81675 München, Germany; Lehrstuhl für Ergonomie, Technische Universität München, Germany
| | - A Wichert
- Chirurgische Klinik und Poliklinik, Klinikum rechts der Isar, Technische Universität München, Ismaninger Straße 22, 81675 München, Germany
| | - H Feussner
- Chirurgische Klinik und Poliklinik, Klinikum rechts der Isar, Technische Universität München, Ismaninger Straße 22, 81675 München, Germany
| |
Collapse
|
31
|
Cesnjevar R, Seitz T, Mauser-Weber P, Palmaers T, Rörick O, Weyand M. Antegrade cerebral perfusion at higher temperatures is more neuroprotective than deep hypothermic circulatory arrest (DHCA) during aortic arch operations in young piglets. Thorac Cardiovasc Surg 2006. [DOI: 10.1055/s-2006-925770] [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: 10/19/2022]
|
32
|
Seitz T, Reimann A, Pfeiffer S, Weyand M, Fischlein T. Sorin Pericarbon More© intraanular and Soprano© supraanular: Superiority of the new supraanular valve design. Thorac Cardiovasc Surg 2006. [DOI: 10.1055/s-2006-925827] [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: 10/19/2022]
|
33
|
Wichert A, Marcos-Suarez P, Vereczkei A, Seitz T, Bubb H, Feussner H. Improvement of the ergonomic situation in the integrated operating room for laparoscopic operations. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.ics.2004.03.092] [Citation(s) in RCA: 6] [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: 10/26/2022]
|
34
|
Vereczkei A, Feussner H, Negele T, Fritzsche F, Seitz T, Bubb H, Horváth OP. Ergonomic assessment of the static stress confronted by surgeons during laparoscopic cholecystectomy. Surg Endosc 2004; 18:1118-22. [PMID: 15136929 DOI: 10.1007/s00464-003-9157-y] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2003] [Accepted: 01/04/2004] [Indexed: 11/25/2022]
Abstract
BACKGROUND Only a few reports on static strain in the spine, neck, and head of the surgeon are available, describing it as "distinctly harmful." The aim of this study was to objectively prove the static burden during laparoscopic operations. For this, new industrial software called PCMAN was used, capable of measuring and comparing the postures of the surgeon at different monitor placements. METHODS Two simultaneous and synchronized video recordings of laparoscopic cholecystectomies (LC) were done using miniDV digital camcorders with the cameras standing at a 90 degrees angle to each other. Twenty operations were performed using two different placements of the monitor. In 10 cases, the monitor was placed at the patient's head in the center, and in 10 cases at the left side of the patient. Using the time codes of the recordings, different steps of the operation were identified, and the duration of these measured in seconds. Very characteristic, longer lasting postures were imported to and analyzed with the software. Results of the different setups were compared to each other, and to an "ideal" comfort posture. RESULTS During the intermediate steps of the operations the rate of static phases is significantly higher. Measuring the typical postures of these phases the trunk and head are significantly more rotated and bent than in comfort positions. When the monitor was at the side of the patient facing the surgeon, results were closer to the comfort posture. CONCLUSIONS It was proven that surgeons are confronted by significant static burden during LC. The software used was able to evaluate objectively the static posture of the surgeon during series of LC. Results also confirmed that the position of monitors significantly influences the surgeon's posture. Best setups for the whole team can be achieved by adjustable multiple monitor systems.
Collapse
Affiliation(s)
- A Vereczkei
- Department of Surgery, Faculty of Medicine, University of Pécs, Ifjuság utja 13, 7624, Pécs, Hungary.
| | | | | | | | | | | | | |
Collapse
|
35
|
Schmiedl A, Schwille PO, Bonucci E, Seitz T, Schwille RM, Manoharan M. Renal cortical calcification in syngeneic intact rats and those receiving an infrarenal thoracic aortic graft: possible etiological roles of endothelin, nitrate and minerals, and different preventive effects of long-term oral treatment with magnesium, citrate and alkali-containing preparations. Urol Res 2001; 29:229-37. [PMID: 11585277 DOI: 10.1007/s002400100191] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Renal cortical nephrocalcinosis (C-NC) is a rare disorder of uncertain etiology. Using highly inbred (syngeneic) male Lewis rats, we describe the spontaneous occurrence of histologically detectable C-NC in sham operated control rats (Sham; n=12), its aggravation following grafting of the ascending thoracic aorta from a donor rat to the infrarenal aorta of a recipient (ATx; n=12), and differences in C-NC inhibition after 12 weeks of oral administration of magnesium (Mg), citrate and alkali. C-NC is characterized by Kossa-positive areas located in cells of the proximal tubule close to blood vessels and also, to a lesser extent, within glomeruli. After ATx there was vascular overproduction of endothelin (ET-1) but decreased production of nitrate; in renal cortical tissue there was an excess of calcium over Mg and phosphorus and oxalate over citrate. In plasma there was an increase in calcium and creatinine within the normal range. Calcification of tubular cells was eliminated by a preparation containing potassium, sodium and bases (from citrate degradation and bicarbonate) in addition to Mg. Less effective than the latter was Mg-potassium citrate and least effective, Mg citrate. The former treatment also normalized calcemia and urinary nitrate, but only incompletely suppressed ET-1 and had no significant effect on glomerular calcification or tissue and urinary oxalate. Urinary ET-1 excess appeared directly related to the cortical tissue calcium/Mg ratio, and urinary excretion of Mg, citrate and total protein appeared to be inversely related to the severity of C-NC. It was concluded that (1) the highly inbred rat is prone to precipitation of calcium phosphate in the renal cortex; (2) this type of C-NC occurs in close proximity to and within renal vascular tissue and is associated with an imbalance of vasoconstrictors and vasodilators of endothelial origin; (3) effective inhibition of C-NC can be achieved by an alkalinizing combination of Mg, potassium, sodium and citrate, underscoring its utility in the prophylaxis of pathological calcium phosphate deposition. The significance of these findings for the etiology and treatment of clinical disorders with renal and vascular calcification is uncertain and requires further investigation.
Collapse
Affiliation(s)
- A Schmiedl
- Mineral Metabolism and Endocrine Research Laboratory, University of Erlangen, Germany
| | | | | | | | | | | |
Collapse
|
36
|
Graw M, Seitz T. Y chromosomal short tandem repeat (STR) loci in a representative group of males living in South Württemberg: a database for application in forensic medicine. Forensic Sci Int 2000; 113:43-6. [PMID: 10978600 DOI: 10.1016/s0379-0738(00)00195-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
In this study, we resolved the allelic distribution of three Y chromosomal short tandem repeats (STRs), DYS19 (n=218), DYS390 (n=257) and DYS393 (n=215), in a population study of 257 unrelated men living in the area of South Wüerttemberg/Hohenzollern. In DYS19 and in DYS393, five different alleles were discovered, and in DYS390, six different alleles. Forty-nine different haplotypes were found in 202 unrelated male individuals. By investigating each of the three STR systems separately, the most powerful results were found in DYS390, with a PE (power of exclusion) of 0.74, followed by DYS19 (PE: 0.65) and DYS393 (PE: 0.47). Using a combination of two systems (n=202), the PEs ranged from 0.79 (DYS19 and DYS393) to 0.89 (DYS19 and DYS390). The combination of all three STR systems revealed a PE of 0.93.
Collapse
Affiliation(s)
- M Graw
- Institute of Forensic Medicine, University of Tuebingen, Naegelestrasse 5, D-72074, Tuebingen, Germany
| | | |
Collapse
|
37
|
Seitz T, Berger B, Nguyen VT, Tricot C, Villeret V, Schmid S, Stalon V, Haas D. Linker insertion mutagenesis based on IS21 transposition: isolation of an AMP-insensitive variant of catabolic ornithine carbamoyltransferase from Pseudomonas aeruginosa. Protein Eng 2000; 13:329-37. [PMID: 10835106 DOI: 10.1093/protein/13.5.329] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
The bacterial insertion sequence IS21 when repeated in tandem efficiently promotes non-replicative cointegrate formation in Escherichia coli. An IS21-IS21 junction region which had been engineered to contain unique SalI and BglII sites close to the IS21 termini was not affected in the ability to form cointegrates with target plasmids. Based on this finding, a novel procedure of random linker insertion mutagenesis was devised. Suicide plasmids containing the engineered junction region (pME5 and pME6) formed cointegrates with target plasmids in an E.coli host strain expressing the IS21 transposition proteins in trans. Cointegrates were resolved in vitro by restriction with SalI or BglII and ligation; thus, insertions of four or 11 codons, respectively, were created in the target DNA, practically at random. The cloned Pseudomonas aeruginosa arcB gene encoding catabolic ornithine carbamoyltransferase was used as a target. Of 20 different four-codon insertions in arcB, 11 inactivated the enzyme. Among the remaining nine insertion mutants which retained enzyme activity, three enzyme variants had reduced affinity for the substrate ornithine and one had lost recognition of the allosteric activator AMP. The linker insertions obtained illustrate the usefulness of the method in the analysis of structure-function relationships of proteins.
Collapse
Affiliation(s)
- T Seitz
- Laboratoire de Biologie Microbienne, Universit¿e de Lausanne, CH-1015 Lausanne, Switzerland, Institut de Recherches Microbiologiques Jean-Marie Wiame, B-1070 Brussels, Belgium
| | | | | | | | | | | | | | | |
Collapse
|
38
|
Seitz T. The euthanasia debate. Can Nurse 2000; 96:43-4. [PMID: 11143663] [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: 02/18/2023]
Abstract
Nurses are key players in determining outcomes for nursing and patient care. They treat patients with actual or potential health problems, act as advocates, and educate patients and families. This makes them eminently qualified to become active participants in the debate as to the legalization of euthanasia.
Collapse
Affiliation(s)
- T Seitz
- Medicine Hat College, Medicine Hat, Alberta
| |
Collapse
|
39
|
Affiliation(s)
- J C Morley
- Division of Surveillance, Hazard Evaluations and Field Studies, NIOSH, Cincinnati, Ohio 45226, USA
| | | | | |
Collapse
|
40
|
Yeung K, Seitz T, Li S, Janosch P, McFerran B, Kaiser C, Fee F, Katsanakis KD, Rose DW, Mischak H, Sedivy JM, Kolch W. Suppression of Raf-1 kinase activity and MAP kinase signalling by RKIP. Nature 1999; 401:173-7. [PMID: 10490027 DOI: 10.1038/43686] [Citation(s) in RCA: 640] [Impact Index Per Article: 25.6] [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: 11/09/2022]
Abstract
Raf-1 phosphorylates and activates MEK-1, a kinase that activates the extracellular signal regulated kinases (ERK). This kinase cascade controls the proliferation and differentiation of different cell types. Here we describe a Raf-1-interacting protein, isolated using a yeast two-hybrid screen. This protein inhibits the phosphorylation and activation of MEK by Raf-1 and is designated RKIP (Raf kinase inhibitor protein). In vitro, RKIP binds to Raf-1, MEK and ERK, but not to Ras. RKIP co-immunoprecipitates with Raf-1 and MEK from cell lysates and colocalizes with Raf-1 when examined by confocal microscopy. RKIP is not a substrate for Raf-1 or MEK, but competitively disrupts the interaction between these kinases. RKIP overexpression interferes with the activation of MEK and ERK, induction of AP-1-dependent reporter genes and transformation elicited by an oncogenically activated Raf-1 kinase. Downregulation of endogenous RKIP by expression of antisense RNA or antibody microinjection induces the activation of MEK-, ERK- and AP-1-dependent transcription. RKIP represents a new class of protein-kinase-inhibitor protein that regulates the activity of the Raf/MEK/ERK module.
Collapse
Affiliation(s)
- K Yeung
- Brown University, Department of Molecular Biology, Cell Biology and Biochemistry, Richmond 02912, USA
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Schmid S, Seitz T, Haas D. Cointegrase, a naturally occurring, truncated form of IS21 transposase, catalyzes replicon fusion rather than simple insertion of IS21. J Mol Biol 1998; 282:571-83. [PMID: 9737923 DOI: 10.1006/jmbi.1998.2041] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The bacterial insertion sequence IS21 contains two genes, istA and istB, which are organized as an operon. IS21 spontaneously forms tandem repeats designated (IS21)2. Plasmids carrying (IS21)2 react efficiently with other replicons, producing cointegrates via a cut-and-paste mechanism. Here we show that transposition of a single IS21 element (simple insertion) and cointegrate formation involving (IS21)2 result from two distinct non-replicative pathways, which are essentially due to two differentiated IstA proteins, transposase and cointegrase. In Escherichia coli, transposase was characterized as the full-length, 46 kDa product of the istA gene, whereas the 45 kDa cointegrase was expressed, in-frame, from a natural internal translation start of istA. The istB gene, which could be experimentally disconnected from istA, provided a helper protein that strongly stimulated the transposase and cointegrase-driven reactions. Site-directed mutagenesis was used to express either cointegrase or transposase from the istA gene. Cointegrase promoted replicon fusion at high frequencies by acting on IS21 ends which were linked by 2, 3, or 4 bp junction sequences in (IS21)2. By contrast, cointegrase poorly catalyzed simple insertion of IS21 elements. Transposase had intermediate, uniform activity in both pathways. The ability of transposase to synapse two widely spaced IS21 ends may reside in the eight N-terminal amino acid residues which are absent from cointegrase. Given the 2 or 3 bp spacing in naturally occurring IS21 tandems and the specialization of cointegrase, the fulminant spread of IS21 via cointegration can now be understood.
Collapse
Affiliation(s)
- S Schmid
- Mikrobiologisches Institut, ETH Zürich, CH-8092, Switzerland
| | | | | |
Collapse
|
42
|
Abstract
We conducted a 4-year (1/89-12/92) retrospective cohort study among employees at a large metropolitan hospital where a nosocomial outbreak of multidrug-resistant tuberculosis (TB) had occurred. We compared the risk of tuberculin skin test (TST) conversion among employees who worked on wards where patients with culture-confirmed TB were cared for ("exposed") with the risk among employees who worked on wards with no such patients ("unexposed"). Exposed employees had a higher 4-year risk of TST conversion (14.5%) than unexposed employees (1.4%) (adjusted relative risk 13.4; 95 percent confidence interval 5.1-35.2). Exposed employees had significantly higher risks of conversion than unexposed employees during 1989-91, but not for 1992. Among the exposed, ward clerks had a risk of conversion (15.6%) only slightly lower than nurses (18.2%). We conclude that employees who worked in areas where patients with active M. tuberculosis infection were cared for, including workers who did not provide direct patient care, had a higher risk of TST conversion than employees who did not work in these areas. Reasons for the decline in risk over time include outbreak termination, fewer admissions of patients with TB, implementation of effective infection control measures, and possible resistance to infection in some members of the study population.
Collapse
Affiliation(s)
- A Y Boudreau
- Division of Surveillance, Hazard Evaluations and Field Studies, Centers for Disease Control and Prevention, Denver, Colorado, USA.
| | | | | | | | | | | | | |
Collapse
|
43
|
Lee BW, Kelsey KT, Hashimoto D, Yakes B, Seitz T, Christiani DC. The prevalence of pulmonary and upper respiratory tract symptoms and spirometric test findings among newspaper pressroom workers exposed to solvents. J Occup Environ Med 1997; 39:960-9. [PMID: 9343761 DOI: 10.1097/00043764-199710000-00008] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [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: 02/05/2023]
Abstract
To investigate the relationship between exposure to organic solvents and the presence of pulmonary and upper respiratory tract mucous membrane symptoms, we conducted a cross-sectional study of 215 newspaper pressroom workers who were occupationally exposed to organic solvent and lubricant mixtures. Thirty-four compositors, who were not occupationally exposed to the solvents or lubricants, served as controls. Pressroom workers and compositors underwent spirometric testing and were also asked about the presence of cough, phlegm, hemoptysis, dyspnea, wheezing, chest tightness, nose or throat irritation, eye irritation, and sinus trouble. The spirometric results did not significantly differ between the two groups. However, the pressroom workers were significantly more likely to report pulmonary or upper respiratory tract mucous membrane symptoms than were compositors (P < 0.005). An exposure-response relationship could be demonstrated when comparing the number of solvents exposed with the total number of symptoms (P < 0.001). Similarly, an exposure-response relationship could be demonstrated when comparing the frequency of use of each of the seven solvents with the total number of symptoms (P < 0.002). Each of these findings was supported in a multivariable linear regression model that adjusted for potential confounders such as age, smoking history, and number of years in the industry. A high prevalence of these symptoms was reported even though the degree of exposure to solvents and lubricants was within the current permissible exposure limits.
Collapse
Affiliation(s)
- B W Lee
- Pulmonary & Critical Care Unit, Massachusetts General Hospital, Boston, USA
| | | | | | | | | | | |
Collapse
|
44
|
Mischak H, Seitz T, Janosch P, Eulitz M, Steen H, Schellerer M, Philipp A, Kolch W. Negative regulation of Raf-1 by phosphorylation of serine 621. Mol Cell Biol 1996; 16:5409-18. [PMID: 8816453 PMCID: PMC231540 DOI: 10.1128/mcb.16.10.5409] [Citation(s) in RCA: 184] [Impact Index Per Article: 6.6] [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: 02/02/2023] Open
Abstract
The elevation of cyclic AMP (cAMP) levels in the cell downregulates the activity of the Raf-1 kinase. It has been suggested that this effect is due to the activation of cAMP-dependent protein kinase (PKA), which can directly phosphorylate Raf-1 in vitro. In this study, we confirmed this hypothesis by coexpressing Raf-1 with the constitutively active catalytic subunit of PKA, which could fully reproduce the inhibition previously achieved by cAMP. PKA-phosphorylated Raf-1 exhibits a reduced affinity for GTP-loaded Ras as well as impaired catalytic activity. As the binding to GTP-loaded Ras induces Raf-1 activation in the cell, we examined which mechanism is required for PKA-mediated Raf-1 inhibition in vivo. A Raf-1 point mutant (RafR89L), which is unable to bind Ras, as well as the isolated Raf-1 kinase domain were still fully susceptible to inhibition by PKA, demonstrating that the phosphorylation of the Raf-1 kinase suffices for inhibition. By the use of mass spectroscopy and point mutants, PKA phosphorylation site was mapped to a single site in the Raf-1 kinase domain, serine 621. Replacement of serine 621 by alanine or cysteine or destruction of the PKA consensus motif by changing arginine 618 resulted in the loss of catalytic activity. Notably, a mutation of serine 619 to alanine did not significantly affect kinase activity or regulation by activators or PKA. Changing serine 621 to aspartic acid yielded a Raf-1 protein which, when expressed to high levels in Sf-9 insect cells, retained a very low inducible kinase activity that was resistant to PKA downregulation. The purified Raf-1 kinase domain displayed slow autophosphorylation of serine 621, which correlated with a decrease in catalytic function. The Raf-1 kinase domain activated by tyrosine phosphorylation could be downregulated by PKA. Specific removal of the phosphate residue at serine 621 reactivated the catalytic activity. These results are most consistent with a dual role of serine 621. On the one hand, serine 621 appears essential for catalytic activity; on the other hand, it serves as a phosphorylation site which confers negative regulation.
Collapse
Affiliation(s)
- H Mischak
- GSF-Institut für Klinische Molekularbiologie und Tumorgenetik, Munich, Germany
| | | | | | | | | | | | | | | |
Collapse
|
45
|
Kieser A, Seitz T, Adler HS, Coffer P, Kremmer E, Crespo P, Gutkind JS, Henderson DW, Mushinski JF, Kolch W, Mischak H. Protein kinase C-zeta reverts v-raf transformation of NIH-3T3 cells. Genes Dev 1996; 10:1455-66. [PMID: 8666230 DOI: 10.1101/gad.10.12.1455] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.2] [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: 02/01/2023]
Abstract
We have identified protein kinase C-zeta (PKC-zeta) as a novel suppressor of neoplastic transformation caused by the v-raf oncogene. PKC-zeta overexpression drastically retards proliferation, abolishes anchorage-independent growth, and reverts the morphological transformation of v-raf-transformed NIH-3T3 cells. The molecular basis for this effect appears to be a specific induction of junB and egr-1 expression, triggered synergistically by PKC-zeta via a Raf/Mek/MAPK-independent mechanism and v-raf. junB-promoter/CAT assays revealed that PKC-zeta directly targets the junB promoter. The induction of junB and egr-1 is linked to the v-raf transformation-suppressing effect of PKC-zeta as constitutive expression of junB and egr-1 but not of c-jun also abolishes anchorage-independent growth of v-raf-transformed NIH-3T3 cells. Moreover, junB overexpression leads to a retardation of proliferation in these cells. PKC-zeta interferes with the serum inducibility of an AP-1 reporter plasmid in v-raf-transformed NIH-3T3 cells, indicating that PKC-zeta antagonizes transformation and proliferation by down-modulating AP-1 function via induction of junB. In summary, our data suggest that PKC-zeta counteracts v-raf transformation by modulating the expression of the transcription factors junB and egr-1.
Collapse
Affiliation(s)
- A Kieser
- Institut für Klinische Molekularbiologie und Tumorgenetik, Forschungszentrum für Umwelt and Gesundheit, München, Germany
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Janosch P, Schellerer M, Seitz T, Reim P, Eulitz M, Brielmeier M, Kölch W, Sedivy JM, Mischak H. Characterization of IkappaB kinases. IkappaB-alpha is not phosphorylated by Raf-1 or protein kinase C isozymes, but is a casein kinase II substrate. J Biol Chem 1996; 271:13868-74. [PMID: 8662925 DOI: 10.1074/jbc.271.23.13868] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
The NF-kappaB transcription factor is activated by a wide variety of stimuli, including phorbol esters such as 12-O-tetradecanoylphorbol-13-acetate. In its inactive state, NF-kappaB is sequestered in the cytoplasm tethered to an inhibitor protein, IkappaB. Activation comprises the rapid phosphorylation of IkappaB-alpha at N-terminal sites, which presumably marks IkappaB-alpha for proteolytic degradation and leads to release of NF-kappaB into the nucleus. In addition, IkappaB-alpha is constitutively phosphorylated at the C terminus, which may be a prerequisite for proper IkappaB function. Protein kinase C (PKC) is activated by 12-O-tetradecanoylphorbol-13-acetate and has been previously reported to phosphorylate IkappaB-alpha in vitro. As PKC has turned out to constitute a multigene family encoding isozymes with different biological functions, we have reinvestigated IkappaB-alpha phosphorylation by PKC using recombinant PKC isozymes expressed in insect cells. While crude PKC preparations were efficient IkappaB-alpha kinases, highly purified PKC isozymes completely failed to phosphorylate IkappaB-alpha. Biochemical separation of porcine spleen yielded at least two fractions with IkappaB-alpha kinase activity, both of which were devoid of detectable PKC isozymes. One peak contained both Raf-1 and casein kinase II (CKII). Purified Raf-1 does not phosphorylate IkappaB-alpha directly, but associates with CKII, which efficiently phosphorylates the C terminus of IkappaB-alpha. Two-dimensional phosphopeptide mapping and high pressure liquid chromatography-mass spectroscopy analysis showed that all IkappaB-alpha kinases induced phosphorylation at the same prominent sites in the C terminus. Our results clearly indicate that PKC isozymes alpha, beta, gamma, delta, epsilon, eta, and zeta as well as Raf-1 are not IkappaB-alpha kinases. They furthermore demonstrate that IkappaB-alpha is targeted by several kinases, one of which appears to be CKII.
Collapse
Affiliation(s)
- P Janosch
- Institut für Klinische Molekularbiologie und Tumorgenetik, Forschungszentrum für Umwelt und Gesundheit, Marchioninistrasse 25, D-81377 München, Federal Republic of Germany
| | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Kelly KA, Seitz T. Michigan Supreme Court races: physician involvement key. Mich Med 1995; 94:15-7. [PMID: 8538507] [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: 01/31/2023]
|
48
|
Kieser A, Seitz T, Adler HS, Kolch W, Mischak H. Suppressor genes of V-RAF transformation: protein kinase C-ξ reverts cellular transformation by inducing prolonged expression of junB and EGR-1. J Cancer Res Clin Oncol 1995. [DOI: 10.1007/bf02572228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
49
|
Abstract
Studies of printing industry tradespeople have reported an increased problem of dermatologic abnormalities, including contact dermatitis and dermatitis attributed to solvent exposure. The current cross-sectional health survey of dermatological conditions were conducted in a follow-up of perceived skin abnormalities among newspaper pressroom workers. We surveyed 215 pressroom workers and 34 compositors at a large northeastern US newspaper printing facility. Our findings indicate that printing pressroom workers reported skin condition symptoms at a significantly higher rate than did the compositor referent group. Pressroom workers also were found to be at a significantly elevated risk of developing dermatitis after self-reported exposure to certain commonly used solvents. This emphasizes the need for proper work practices, product substitution where possible, and appropriate protective glove use by newspaper pressroom workers.
Collapse
Affiliation(s)
- B Yakes
- Occupational Health Program, Harvard School of Public Health, Boston, MA 02115
| | | | | | | | | | | |
Collapse
|
50
|
Hashimoto DM, Kelsey KT, Seitz T, Feldman HA, Yakes B, Christiani DC. The presence of urinary cellular sediment and albuminuria in newspaper pressworkers exposed to solvents. J Occup Med 1991; 33:516-26. [PMID: 2037907] [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] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
To investigate the relationship between exposure to organic solvents and the presence of increased urinary cellular sediment, we conducted a cross-sectional study of 215 newspaper pressroom workers who were exposed to solvent and lubricant mixtures. Thirty-two compositors were surveyed as referents. Industrial hygiene measurements showed low-level airborne exposures to organic solvents (primarily naphthas) and minimal airborne exposure to glycol ethers. There was a high prevalence of solvent-related dermatitis indicating there was significant dermal exposure to these substances. Pressworkers were exposed to solvent mixtures that were associated with dose-related increases in leukocyturia alone or in urinary cellular sediment (erythrocyturia and/or leukocyturia). The presence of urinary cellular sediment was associated with increasing frequency of use of five particular organic solvent mixtures. These results suggest that the increase in urinary cellular sediment may be due, at least in part, to the effects of solvents on the kidney. Consistent with this hypothesis, 16% of pressmen and no compositors were found to have primarily low-grade albuminuria detectable by dipstick. Workers with urinary cellular sediment were significantly more likely to have detectable albuminuria. Albuminuria was more likely to occur with increased frequency of use of four particular solvent mixtures. The presence of urinary cellular sediment was less likely to occur with occasional use of analgesics suggesting a possible etiologic role for acute or chronic urinary tract inflammation.
Collapse
Affiliation(s)
- D M Hashimoto
- Occupational Health Program, Harvard School of Public Health, Boston, MA 02115
| | | | | | | | | | | |
Collapse
|