1
|
Santos-Pereira M, Silva S, Santos-Leite L, Silva A, Terceiro A, Pinto C, Canedo T, Monteiro F, Summavielle T, Vicent K, Treede R, Nagel J, Merlos M, Cruz F, Charrua A. The insula, a key brain area for bladder pain control, is modulated by stress. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00805-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
|
2
|
Nagel J, Jönsson G, Nilsson JÅ, Manuswin C, Englund M, Saxne T, Kapetanovic MC. Reduced risk of serious pneumococcal infections up to 10 years after a dose of pneumococcal conjugate vaccine in established arthritis. Vaccine 2023; 41:504-510. [PMID: 36496283 DOI: 10.1016/j.vaccine.2022.11.075] [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: 10/17/2022] [Revised: 11/21/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022]
Abstract
BACKGROUND To examine rates of serious pneumococcal infections up to 10 years after vaccination with 7-valent conjugated pneumococcal vaccine (PCV7) in patients with arthritis compared to non-vaccinated arthritis patients. METHODS In total, 595 adult arthritis patients (rheumatoid arthritis; RA = 342, 80 % women and spondylarthropathy; SpA = 253, 45 % women) received one dose of PCV7. Mean age/disease duration were 62/16 and 51/14 years, respectively. For each patient, 4 matched reference subjects were identified. At vaccination, 420 patients received bDMARDs (anti-TNF = 330, tocilizumab = 15, abatacept = 18, anakinra = 1, rituximab = 56). Methotrexate was given as monotherapy (n = 86) or in combination with bDMARD (n = 220). 89 SpA patients received NSAIDs without DMARD. The Skåne Healthcare Register was searched for ICD-10 diagnostic codes for pneumococcal infections (pneumonia, lower respiratory tract infection, septicemia, meningitis, septic arthritis) between January 2000 and December 2018. Frequency of infections after vs before vaccination were calculated (relative risks). Relative risk ratio (RRR) and relative risk reduction (1-RRR) were calculated comparing patients vs non-vaccinated references. Kaplan-Meier and Cox regression were used to investigate time to first event and predictors of infections. RESULTS Among vaccinated RA and SpA patients, there was a significant relative risk reduction of pneumonia and all serious infections; 53% and 46%, respectively. There was no significant difference in time to first pneumonia or all serious infections after vaccination between patients and references. Higher age, RA diagnosis and concomitant prednisolone were associated with infections. CONCLUSION One dose of pneumococcal conjugate vaccine may decrease risk of serious pneumococcal infection up to 10 years in patients with arthritis receiving immunomodulating treatment.
Collapse
Affiliation(s)
- J Nagel
- Lund University, Skåne University Hospital, Department of Clinical Sciences Lund, Rheumatology, Lund, Sweden
| | - G Jönsson
- Lund University, Skåne University Hospital, Department of Clinical Sciences Lund, Infection Medicine, Lund, Sweden
| | - J-Å Nilsson
- Lund University, Skåne University Hospital, Department of Clinical Sciences Lund, Rheumatology, Lund, Sweden
| | - C Manuswin
- Centre of Registers South, Skåne University Hospital, Lund, Sweden
| | - M Englund
- Lund University, Skåne University Hospital, Faculty of Medicine, Department of Clinical Sciences Lund, Orthopaedics, Clinical Epidemiology Unit, Lund, Sweden
| | - T Saxne
- Lund University, Skåne University Hospital, Department of Clinical Sciences Lund, Rheumatology, Lund, Sweden
| | - M C Kapetanovic
- Lund University, Skåne University Hospital, Department of Clinical Sciences Lund, Rheumatology, Lund, Sweden.
| |
Collapse
|
3
|
Schneider W, Hansen JH, Rinne K, Nagel J, Scheewe J, Attmann T, Kramer HH, Uebing A. Midterm Outcomes after the Modified Fontan Operation: A Single-Centre Experience. Thorac Cardiovasc Surg 2022. [DOI: 10.1055/s-0042-1742998] [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: 10/18/2022]
Affiliation(s)
- W. Schneider
- Department of Congenital Heart Disease and Pediatric Cardiology, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Kiel, Deutschland
| | - J. H. Hansen
- Department of Congenital Heart Disease and Pediatric Cardiology, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Kiel, Deutschland
| | - K. Rinne
- Department of Congenital Heart Disease and Pediatric Cardiology, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Kiel, Deutschland
| | - J. Nagel
- Department of Congenital Heart Disease and Pediatric Cardiology, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Kiel, Deutschland
| | - J. Scheewe
- Department of Cardiovascular Surgery, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Deutschland
| | - T. Attmann
- Department of Cardiovascular Surgery, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Deutschland
| | - H.-H. Kramer
- Department of Congenital Heart Disease and Pediatric Cardiology, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Kiel, Deutschland
| | - A. Uebing
- Department of Congenital Heart Disease and Pediatric Cardiology, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Kiel, Deutschland
| |
Collapse
|
4
|
Hansen JH, Khodami JK, Moritz JD, Rinne K, Nagel J, Fischer G, Jussli-Melchers J, Attmann T, Scheewe J, Uebing A. The Fontan Associated Liver Disease—Is It Inevitable? Thorac Cardiovasc Surg 2020. [DOI: 10.1055/s-0040-1705564] [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: 10/24/2022]
|
5
|
Nagel J, Saxne T, Geborek P, Bengtsson AA, Jacobsen S, Svaerke Joergensen C, Nilsson JÅ, Skattum L, Jönsen A, Kapetanovic MC. Treatment with belimumab in systemic lupus erythematosus does not impair antibody response to 13-valent pneumococcal conjugate vaccine. Lupus 2017; 26:1072-1081. [PMID: 28420056 DOI: 10.1177/0961203317695465] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Background/purpose The objective of this study was to explore the impact of systemic lupus erythematosus and belimumab given in addition to standard of care therapy on 13-valent conjugated pneumococcal vaccine (PCV13) response. Methods Forty-seven systemic lupus erythematosus patients and 21 healthy controls were immunized with a single dose of 13-valent conjugated pneumococcal vaccine. Forty systemic lupus erythematosus patients were treated with traditional disease-modifying anti rheumatic drugs, 11 of those received belimumab in addition, and 32 patients were treated with concomitant prednisolone. Quantification of serotype specific IgG levels to 12 pneumococcal capsular polysaccharides was performed in serum taken before and four to six weeks after vaccination using multiplex fluorescent microsphere immunoassay. IgG levels against serotypes 23F and 6B were also analyzed using standard enzyme-linked immunosorbent assays. Opsonophagocytic assay was performed on serotype 23F to evaluate the functionality of the antibodies. Pre- and post-vaccination log transformed antibody levels were compared to determine the impact of systemic lupus erythematosus diagnosis and different treatments on antibody response. Results Systemic lupus erythematosus patients as a group showed lower post-vaccination antibody levels and lower fold increase of antibody levels after vaccination compared to controls ( p = 0.02 and p = 0.009, respectively). Systemic lupus erythematosus patients treated with belimumab in addition to standard of care therapy or with only hydroxychloroquine did not differ compared to controls, whereas the other treatment groups had significantly lower fold increase of post-vaccination antibody levels. Higher age was associated with lower post-vaccination antibody levels among systemic lupus erythematosus patients. Conclusion Belimumab given in addition to traditional disease-modifying anti rheumatic drugs or prednisolone did not further impair antibody response to 13-valent conjugated pneumococcal vaccine.
Collapse
Affiliation(s)
- J Nagel
- 1 Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skåne University Hospital, Lund, Sweden
| | - T Saxne
- 1 Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skåne University Hospital, Lund, Sweden
| | - P Geborek
- 1 Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skåne University Hospital, Lund, Sweden
| | - A A Bengtsson
- 1 Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skåne University Hospital, Lund, Sweden
| | - S Jacobsen
- 2 Copenhagen Lupus and Vasculitis Clinic, Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | | | - J-Å Nilsson
- 1 Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skåne University Hospital, Lund, Sweden
| | - L Skattum
- 4 Department of Laboratory Medicine, Section of Microbiology, Immunology and Glycobiology, Lund University, and Clinical Immunology and Transfusion Medicine University and Regional Laboratories, Region Skåne, Lund, Sweden
| | - A Jönsen
- 1 Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skåne University Hospital, Lund, Sweden
| | - M C Kapetanovic
- 1 Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skåne University Hospital, Lund, Sweden
| |
Collapse
|
6
|
Nived P, Nagel J, Saxne T, Geborek P, Jönsson G, Skattum L, Kapetanovic M. FRI0386 Immunogenicity of 13-Valent Pneumococcal Conjugate Vaccine in Patients with Vasculitis Receiving Standard of Care Therapy and Controls:. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.2764] [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: 11/03/2022]
|
7
|
Laux-Biehlmann A, Boyken J, Dahllöf H, Schmidt N, Zollner TM, Nagel J. Dynamic weight bearing as a non-reflexive method for the measurement of abdominal pain in mice. Eur J Pain 2015; 20:742-52. [PMID: 26684879 DOI: 10.1002/ejp.800] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/06/2015] [Indexed: 12/11/2022]
Abstract
BACKGROUND Chronic pelvic pain (CPP) is a high burden for patients and society. It affects 15-24% of women in reproductive age and is an area of high unmet medical need. CPP can be caused by a wide range of visceral diseases such as abdominal infections, gastrointestinal or gynaecological diseases like endometriosis. Despite the high medical need for this condition, pharmacological approaches are hampered by the limited number of available methods for the behavioural evaluation of pain in inflammation-driven animal models of pelvic pain. METHODS The dynamic weight bearing (DWB) system was used for the evaluation of spontaneous behaviour changes in the zymosan-induced peritonitis mouse model. Inflammatory mediator levels were evaluated in peritoneal lavage and their correlation with the behavioural endpoints was assessed. We evaluated the effect on behavioural endpoints of the selective cyclooxygenase-2 (COX-2) inhibitor celecoxib and the Nav 1.8 blocker A-803467. RESULTS The presence of a relief posture, characterized by a significantly increased weight distribution towards the front paws, was observed following intraperitoneal injection of zymosan. A positive correlation was detected between PGE2 levels in the peritoneal lavage and DWB endpoints. In addition, zymosan-induced weight bearing changes were reverted by celecoxib and A-803467. CONCLUSIONS This study described for the first time the use of DWB as a non-subjective and non-reflexive method for the evaluation of inflammatory-driven abdominal pain in a mouse model.
Collapse
Affiliation(s)
- A Laux-Biehlmann
- Global Drug Discovery, Global Therapeutic Research Groups, Gynecological Therapies, Bayer Healthcare, Berlin, Germany
| | - J Boyken
- Global Drug Discovery, Global Therapeutic Research Groups, Gynecological Therapies, Bayer Healthcare, Berlin, Germany
| | - H Dahllöf
- Global Drug Discovery, Global Therapeutic Research Groups, Gynecological Therapies, Bayer Healthcare, Berlin, Germany
| | - N Schmidt
- Global Drug Discovery, Global Therapeutic Research Groups, Gynecological Therapies, Bayer Healthcare, Berlin, Germany
| | - T M Zollner
- Global Drug Discovery, Global Therapeutic Research Groups, Gynecological Therapies, Bayer Healthcare, Berlin, Germany
| | - J Nagel
- Global Drug Discovery, Global Therapeutic Research Groups, Gynecological Therapies, Bayer Healthcare, Berlin, Germany
| |
Collapse
|
8
|
Nagel J, Geborek P, Saxne T, Jönsson G, Englund M, Petersson IF, Nilsson JÅ, Kapetanovic MC. The risk of pneumococcal infections after immunization with pneumococcal conjugate vaccine compared to non-vaccinated inflammatory arthritis patients. Scand J Rheumatol 2015; 44:271-9. [PMID: 25656734 DOI: 10.3109/03009742.2014.984754] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVES To examine the risk of putative pneumococcal infections in adult arthritis patients on different anti-rheumatic drugs immunized with heptavalent pneumococcal conjugate vaccine (Prevenar 7; PCV7) and non-vaccinated individually matched arthritis patients. METHOD All individuals in a cohort of 505 patients with rheumatoid arthritis (RA) or spondylarthropathy (SpA) receiving different anti-rheumatic treatments were immunized with a single dose of PCV7 (exposed group). Of these, 497 patients (RA = 248; SpA = 249) were included. For each vaccinated patient, we identified four reference subjects (n = 1988) from the same geographic area, individually matched for age, gender, and diagnosis. These were considered unexposed to conjugated pneumococcal vaccination. The Skåne Healthcare Register (SHR) was searched for all individuals seeking health care for putative pneumococcal infections occurring 4 years before vaccination and up to 4.5 years after vaccination using ICD-10 diagnostic codes. The following infections were considered as serious cases: pneumonia, other lower respiratory infections, meningitis, sepsis, and septic arthritis. The relative risk (RR) of infection was calculated as the number of events after/number of events before vaccination. Ratios of relative risk (RRRs) were calculated between vaccinated and non-vaccinated groups of patients. A generalized estimating equation (GEE) was used to handle correlated data for several events in the same individual. RESULTS Although statistically non-significant, the point estimate of the RRR [0.55, 95% confidence interval (CI) 0.25-1.22] suggested a reduced risk of serious pneumococcal infections in vaccinated patients compared to the unexposed group. CONCLUSIONS Vaccination with PCV7 tended to reduce the risk of putative serious pneumococcal infections by about 45% compared to non-vaccinated patients in this observational cohort study.
Collapse
Affiliation(s)
- J Nagel
- Department of Clinical Sciences Lund, Section of Rheumatology, Lund University and Skåne University Hospital , Sweden
| | | | | | | | | | | | | | | |
Collapse
|
9
|
Nagel J, Geborek P, Saxne T, Jönsson G, Englund M, Petersson I, Nilsson JÅ, Crnkic Kapetanovic M. FRI0213 The Association between Antibody Levels before and after 7-Valent Pneumococcal Conjugate Vaccine Immunization and Subsequent Pneumococcal Infection in Arthritis Patients. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.3786] [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: 11/03/2022]
|
10
|
Buchter A, Nagel J, Rüffer D, Xue F, Weber DP, Kieler OF, Weimann T, Kohlmann J, Zorin AB, Russo-Averchi E, Huber R, Berberich P, Fontcuberta i Morral A, Kemmler M, Kleiner R, Koelle D, Grundler D, Poggio M. Reversal mechanism of an individual Ni nanotube simultaneously studied by torque and SQUID magnetometry. Phys Rev Lett 2013; 111:067202. [PMID: 23971606 DOI: 10.1103/physrevlett.111.067202] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 07/14/2013] [Indexed: 05/12/2023]
Abstract
Using an optimally coupled nanometer-scale SQUID, we measure the magnetic flux originating from an individual ferromagnetic Ni nanotube attached to a Si cantilever. At the same time, we detect the nanotube's volume magnetization using torque magnetometry. We observe both the predicted reversible and irreversible reversal processes. A detailed comparison with micromagnetic simulations suggests that vortexlike states are formed in different segments of the individual nanotube. Such stray-field free states are interesting for memory applications and noninvasive sensing.
Collapse
Affiliation(s)
- A Buchter
- Department of Physics, University of Basel, 4056 Basel, Switzerland
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Marco C, Nagel J, Klink E, Baehren D. 143 Factors Associated With Self-Reported Pain Scores Among Emergency Department Patients. Ann Emerg Med 2011. [DOI: 10.1016/j.annemergmed.2011.06.170] [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: 11/28/2022]
|
12
|
Oertel U, Buchhammer HM, Müller M, Nagel J, Braun HG, Eichhorn KJ, Sahre K. Surface modification by polyelectrolytes: Studies on model systems. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/masy.19991450106] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
13
|
Schuhmann CG, Sohn HY, Nagel J, Spannagl M, Klauss V, Krötz F. Clinical management of clopidogrel inefficiency by point of care platelet function testing and individual adjustment of anti-platelet therapy--initial experiences. Platelets 2010; 20:498-504. [PMID: 19852689 DOI: 10.3109/09537100903207497] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Insufficient inhibition of ADP dependent platelet aggregation by clopidogrel is associated with an increased risk for adverse coronary events, such as stent thrombosis, after percutaneous coronary intervention. Here, we describe an approach to the clinical management of patients with insufficient inhibition of ADP dependent platelet aggregation by clopidogrel involving dose adjustment or switching of the thienoyridine. We put special emphasize on a patient who experienced recurrent acute myocardial infarction due to stent thrombosis associated with severe clopidogrel non response following elective coronary drug eluting stent implantation. In this patient, an inadequate clopidogrel effect at maintenance doses was confirmed by repeated platelet function assessment with a multiple electrode impedance point of care platelet function test. Subsequent dose adjustments still did not result in sufficient inhibition of ADP dependent platelet aggregation. Only after switching to the then shortly available new thienopyridine prasugrel could a sufficient platelet inhibition be obtained. However, our data from further patients show that although this may overcome inadequate clopidogrel efficiency in many cases, even under prasugrel suboptimal platelet inhibition may occur.
Collapse
Affiliation(s)
- C G Schuhmann
- Cardiology Department, Medical Policlinic, Ludwig-Maximilians-University, Munich, Germany
| | | | | | | | | | | |
Collapse
|
14
|
Nagel J, Schaldach M. Registrierung der Uterusaktivität aus dem abdominal abgeleiteten Elektromyogramm. BIOMED ENG-BIOMED TE 2009. [DOI: 10.1515/bmte.1978.23.s1.112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
15
|
Nagel J, Speer D, Gaber T, Sterck A, Eichhorn R, Reimann P, Ilin K, Siegel M, Koelle D, Kleiner R. Observation of negative absolute resistance in a Josephson junction. Phys Rev Lett 2008; 100:217001. [PMID: 18518625 DOI: 10.1103/physrevlett.100.217001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2008] [Indexed: 05/26/2023]
Abstract
We experimentally demonstrate the occurrence of negative absolute resistance (NAR) up to about -1 Omega in response to an externally applied dc current for a shunted Nb-Al/AlO_{x}-Nb Josephson junction, exposed to a microwave current at frequencies in the GHz range. The realization (or not) of NAR depends crucially on the amplitude of the applied microwave current. Theoretically, the system is described by means of the resistively and capacitively shunted junction model in terms of a moderately damped, classical Brownian particle dynamics in a one-dimensional potential. We find excellent agreement of the experimental results with numerical simulations of the model.
Collapse
Affiliation(s)
- J Nagel
- Physikalisches Institut - Experimentalphysik II, Universität Tübingen, Auf der Morgenstelle 14, D-72076 Tübingen, Germany
| | | | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Winblad B, Grossberg G, Frölich L, Farlow M, Zechner S, Nagel J, Lane R. IDEAL: a 6-month, double-blind, placebo-controlled study of the first skin patch for Alzheimer disease. Neurology 2007; 69:S14-22. [PMID: 17646619 DOI: 10.1212/01.wnl.0000281847.17519.e0] [Citation(s) in RCA: 127] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The rivastigmine patch is the first transdermal treatment for Alzheimer disease (AD). By providing continuous delivery of drug into the bloodstream over 24 hours, transdermal delivery may offer benefits superior to those of oral administration. This study compared the efficacy, safety and tolerability of rivastigmine patches with capsules and placebo. IDEAL (Investigation of transDermal Exelon in ALzheimer's disease) was a 24-week, double-blind, double-dummy, placebo- and active-controlled study. Patients with AD were randomized to placebo or one of three active treatment target dose groups: 10-cm(2) rivastigmine patch (delivering 9.5 mg/24 hours); 20-cm(2) rivastigmine patch (17.4 mg/24 hours); or 6-mg BID rivastigmine capsules. Primary efficacy measures were the Alzheimer's Disease Assessment Scale-Cognitive subscale and Alzheimer's Disease Cooperative Study-Clinical Global Impression of Change. Secondary outcome measures assessed a range of domains, including behavior, cognitive performance, attention, executive functions, and activities of daily living. A total of 1,195 AD patients participated. All rivastigmine treatment groups showed significant improvement relative to placebo. The 10-cm(2) patch showed similar efficacy to capsules, with approximately two-thirds fewer reports of nausea (7.2% vs 23.1%) and vomiting (6.2% vs 17.0%), incidences statistically not significantly different from placebo (5.0% and 3.3% for nausea and vomiting, respectively). The 20-cm(2) patch showed earlier improvement and numerically superior cognitive scores vs the 10-cm(2) patch with similar tolerability to capsules. Local skin tolerability was good. The transdermal patch with rivastigmine may offer additional therapeutic benefits and may prove to be the best delivery system for this drug to treat AD.
Collapse
Affiliation(s)
- B Winblad
- Karolinska Institutet Alzheimer Research Center, Stockholm, Sweden.
| | | | | | | | | | | | | |
Collapse
|
17
|
Pietraszek M, Nagel J, Gravius A, Schäfer D, Danysz W. The role of group I metabotropic glutamate receptors in schizophrenia. Amino Acids 2006; 32:173-8. [PMID: 16699816 DOI: 10.1007/s00726-006-0319-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2005] [Accepted: 01/12/2006] [Indexed: 12/22/2022]
Abstract
It has been proposed that glutamatergic transmission, in particular NMDA receptor function, might be altered in schizophrenia. This hypothesis is mainly based on the observation that uncompetitive NMDA receptor antagonists, e.g. phencyclidine, evoke psychotic symptoms in healthy subjects, whereas agonists interacting at the glycine site of the NMDA receptor complex, e.g. glycine or D-serine, administered jointly with typical neuroleptics, can alleviate schizophrenic symptoms. The function of NMDA receptors may be modulated by group I mGluRs (mGluR1 and mGluR5), which have also been shown to be altered in schizophrenia. In rodents, mGluR5 antagonists, but not mGluR1 ones, potentiate the locomotor activity and the deficit of prepulse inhibition (PPI) induced by uncompetitive NMDA receptor antagonists. These antagonists (of either type) administered alone are not active in the above tests. Hence, antagonists of mGluR1 and mGluR5 may evoke different effects on the NMDA receptor antagonists-induced behavior and, possibly, on schizophrenic symptoms.
Collapse
Affiliation(s)
- M Pietraszek
- Preclinical R&D, Merz Pharmaceuticals GmbH, Frankfurt am Main, Germany.
| | | | | | | | | |
Collapse
|
18
|
Pompe G, Bräuer M, Schweikle D, Nagel J, Hupfer B, Lehmann D. Influence of the temperature profile in the interface on the bond strength of polyamide–polyurethane two-component tensile bars. J Appl Polym Sci 2006. [DOI: 10.1002/app.23842] [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: 11/11/2022]
|
19
|
Nagel J, Hauber W. Reverse microdialysis of a dopamine D2 receptor antagonist alters extracellular adenosine levels in the rat nucleus accumbens. Neurochem Int 2004; 44:609-15. [PMID: 15016476 DOI: 10.1016/j.neuint.2003.10.001] [Citation(s) in RCA: 6] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2003] [Accepted: 10/02/2003] [Indexed: 11/16/2022]
Abstract
Recent evidence suggests that modulation of dopaminergic transmission alters striatal levels of extracellular adenosine. The present study used reverse microdialysis of the selective dopamine D(2) receptor antagonist raclopride to investigate whether a blockade of dopamine D(2) receptors modifies extracellular adenosine concentrations in the nucleus accumbens. Results reveal that perfusion of raclopride produced an increase of dialysate adenosine which was significant with a high (10 mM) and intermediate (1 mM) drug concentration, but not with lower drug concentrations (10 and 100 microM). Thus, the present study demonstrates that a selective blockade of dopamine D(2) receptors in the nucleus accumbens produced a pronounced increase of extracellular adenosine. The cellular mechanisms underlying this effect are yet unknown. It is suggested that the increase of extracellular adenosine might be related to a homeostatic modulatory mechanism proposed to be a key function of adenosine in response to neuronal metabolic challenges.
Collapse
Affiliation(s)
- J Nagel
- Department of Animal Physiology, Institute of Biology, University of Stuttgart, Pfaffenwaldring 57, Stuttgart D-70550, Germany
| | | |
Collapse
|
20
|
Nagel J, Bräuer M, Hupfer B, Grundke K, Schwarz S, Lehmann D. Investigations on the reactive surface modification of polycarbonate by surface-reactive injection molding. J Appl Polym Sci 2004. [DOI: 10.1002/app.20577] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
21
|
Nielsen K, Ingvar C, Måsbäck A, Westerdahl J, Borg A, Sandberg T, Jonsson N, Nagel J, Olsson H. Melanoma and nonmelanoma skin cancer in patients with multiple tumours--evidence for new syndromes in a population-based study. Br J Dermatol 2004; 150:531-6. [PMID: 15030338 DOI: 10.1111/j.1365-2133.2003.05852.x] [Citation(s) in RCA: 14] [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: 11/29/2022]
Abstract
BACKGROUND The hypotheses that Swedish patients with four or more primary tumours [including at least one cutaneous malignant melanoma (CMM)] harbour an increased number of CDKN2A (formerly p16) germline mutations, and that this group of patients show a predisposition to other tumours, e.g. nonmelanoma skin cancer (NMSC), were studied descriptively. So far the mutation 113insArg explains all CDKN2A-associated CMM in ethnic Swedes. OBJECTIVES All patients with four or more primary tumours, of which at least one was a CMM, from the Southern Swedish Regional Tumour Registry, between 1958 and 1999, were included in this study. METHODS Forty-four patients were found and subdivided into three groups according to having multiple CMM (group A) or single CMM +/- NMSC (groups B and C). Screening for the presence of the Swedish founder mutation 113insArg in blood or in tissue blocks was performed. RESULTS Patients in group A were younger at the time of the first CMM diagnosis than patients in group B and group C. The 113insArg mutation was found in four of 44 patients (9%), three with multiple CMM. In group C (n = 14) no founder mutation was evident, while in group B (n = 15) one mutation carrier was found. Nonmutation carriers with multiple CMM (group A) also had a predilection for meningiomas and neurinomas (four patients) or multiple NMSC (three patients). In group B CMM were especially associated with adenocarcinomas but in group C CMM were associated with multiple NMSC. CONCLUSION The association between meningiomas and neurinomas (no acoustic neurinoma was seen) might indicate a new syndrome. Patients in groups B and C may harbour unknown genetic defects, which could interact with different environmental risk factors.
Collapse
Affiliation(s)
- K Nielsen
- Department of Dermatology, University Hospital, S-221 85 Lund, Sweden.
| | | | | | | | | | | | | | | | | |
Collapse
|
22
|
|
23
|
Maisa U, Jacob T, Nagel J, Hagen R. Objektivierung und Visualisierung von Stimmparametern zur Verbesserung der Stimmrehabilitation nach Laryngektomie. Laryngorhinootologie 2004. [DOI: 10.1055/s-2004-823370] [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]
|
24
|
Nagel J, Molerus O, Wirth KE. Ein neues Verfahren zur Handhabung feinster Partikel und Herstellung dünnster Schichten am Beispiel der Pulverlackierung mit Flüssigstickstoff. CHEM-ING-TECH 2004. [DOI: 10.1002/cite.330690965] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
25
|
Conradi S, Smolenski UC, Bak P, Biskupek H, Frey M, Galeazzi A, Klaas T, Kluge K, Müller K, Nagel J, Psczolla M, Schröder N, Sturm C, Wagner W, Wilde W. Reliabilität der manualmedizinischen Tests bei Low Back Pain (LBP) Patienten. Manuelle Medizin 2003. [DOI: 10.1007/s00337-003-0236-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
26
|
Ericson K, Halvarsson B, Nagel J, Rambech E, Planck M, Piotrowska Z, Olsson H, Nilbert M. Defective mismatch-repair in patients with multiple primary tumours including colorectal cancer. Eur J Cancer 2003; 39:240-8. [PMID: 12509957 DOI: 10.1016/s0959-8049(02)00584-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Individuals with an inherited predisposition to cancer development are at an increased risk of developing multiple tumours. Hereditary non-polyposis colorectal cancer (HNPCC) is one of the most common hereditary cancer syndromes and is estimated to account for approximately 2% of colorectal cancers. However, HNPCC individuals are at an increased risk of developing other tumour types such as cancers of the endometrium, urothelium and small intestine. We have utilised a population-based regional cancer registry to identify all patients with double primary colorectal cancers and at least one additional malignancy and characterised the tumour spectrum in this patient group. We subsequently selected those 47 individuals who had developed at least four malignancies, including two colorectal cancers, for studies of the tumour characteristics associated with HNPCC. In total, these individuals developed 209 tumours, 156 of which were successfully retrieved. Microsatellite instability (MSI), a phenomenon caused by defective mismatch-repair (MMR), was identified in 63/154 (41%) evaluable tumours with a MSI-high pattern in 59 and a MSI-low pattern in four tumours. All tumours were immunohistochemically stained for the MMR proteins MLH1 and MSH2, with loss of expression in 55/63 (87%) MSI tumours and in 2/89 (2%) microsatellite stable (MSS) tumours. This loss affected MLH1 in 24 tumours and MSH2 in 33 tumours. A concordant loss of expression for the same MMR protein in several tumours from the same individual, a pattern that strongly suggests an underlying germline MMR gene mutation, was found in 17/45 (38%) patients and affected MLH1 in 8 patients and MSH2 in 9 patients. We conclude that the development of multiple primary tumours, including synchronous or metachronous colorectal cancers, is associated with an increased frequency of MSI and loss of immunohistochemical expression of MLH1 and MSH2.
Collapse
Affiliation(s)
- K Ericson
- Department of Oncology, University Hospital, 221 85 Lund, Sweden.
| | | | | | | | | | | | | | | |
Collapse
|
27
|
Nagel J, Hauber W. Effects of salient environmental stimuli on extracellular adenosine levels in the rat nucleus accumbens measured by in vivo microdialysis. Behav Brain Res 2002; 134:485-92. [PMID: 12191835 DOI: 10.1016/s0166-4328(02)00062-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
In the nucleus accumbens (NAc), the neuromodulator adenosine plays a major role in control of behaviour. The NAc subserves behaviour governed by salient stimuli in the environment, however, it is unknown whether such stimuli and the behavioural effects elicited are associated with changes in NAc extracellular adenosine levels. In order to further characterise the neuromodulatory actions of adenosine, the present study investigated for the first time the effects of four prototypical stimuli known to involve NAc processing on extracellular levels of adenosine in the NAc. Using in vivo microdialysis, the following stimuli were examined: (1) an appetitive, unfamiliar stimulus (palatable food), (2) an appetitive, familiar stimulus (standard laboratory food), (3) an aversive stimulus (handling) and (4) a novelty stimulus (cage change). Results revealed that neither of these stimuli significantly changed extracellular adenosine levels in the NAc. These findings demonstrate that NAc extracellular adenosine is not responsive to a number of prototypical salient stimuli in the environment. Thus the data provide no clues to suggest that transient changes of extracellular adenosine in the NAc modulate behavioural responses governed by these stimuli.
Collapse
Affiliation(s)
- J Nagel
- Department of Animal Physiology, Institute of Biology, University of Stuttgart, Pfaffenwaldring 57, D-70550 Stuttgart, Germany
| | | |
Collapse
|
28
|
Pretzsch H, Biber P, ursky J, von Gadow K, Hasenauer H, Kandler G, Kenk G, Kublin E, Nagel J, Pukkala T, Skovsgaard JP, Sodtke R, Sterba H. Recommendations for Standardized Documentation and Further Development of Forest Growth Simulators. Empfehlungen fur die standardisierte Beschreibung und Weiterentwicklung von Waldwachstumssimulatoren. ACTA ACUST UNITED AC 2002. [DOI: 10.1046/j.1439-0337.2002.00138.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
29
|
Abstract
Differences of elasticity in tissue phantoms with inclusions of different elasticity were mapped by means of MR elastography (MRE). This new magnetic resonance imaging technique is based on the phase shift of the MR signal by switching a motion sensitizing magnetic field gradient simultaneously with the coupling of a shear wave. Wave patterns showing snapshots of the shear wave that propagates through the investigated substance were depicted in tomographic phase images. It was investigated wether a visualization of differences in elasticity of soft tissues was possible on the basis of differences in the wavelength. For this purpose, tissue phantoms with cylindrical inclusions were produced from agar gels, with agar concentrations between 1.0 and 1.5%. The diameters of the inclusions were of the order of a few centimetres. For diameters as small as 4 cm, there were still distinct differences in the wavelength between the matrix and the inclusion. The results of our study suggest that this technique has the potential for future application as an additional imaging method for tumor detection.
Collapse
Affiliation(s)
- U Hamhaber
- Sektion für Experimentelle Kemspinresonanz des ZNS, Abteilung für Neuroradiologie, Eberhard-Karls-Universität Tübingen
| | | | | | | |
Collapse
|
30
|
Affiliation(s)
- L Gardella
- Sanatorio Parque, Cordoba, Rosario, Santa Fe, Argentina
| | | | | | | |
Collapse
|
31
|
Hauber W, Neuscheler P, Nagel J, Müller CE. Catalepsy induced by a blockade of dopamine D1 or D2 receptors was reversed by a concomitant blockade of adenosine A(2A) receptors in the caudate-putamen of rats. Eur J Neurosci 2001; 14:1287-93. [PMID: 11703457 DOI: 10.1046/j.0953-816x.2001.01759.x] [Citation(s) in RCA: 92] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The present study sought to determine, in more detail, the effects of an unselective and a selective adenosine A(2A) receptor blockade on catalepsy induced by a blockade of dopamine D1 or D2 receptors in rats. The results demonstrated that systemic administration of the unselective A1/A2 receptor antagonist, theophylline and the selective A(2A) receptor antagonist, CSC potently reversed catalepsy induced by a systemic D2 receptor blockade with raclopride or by a bilateral blockade of D2 receptors in the caudate-putamen (CPu) with S(-)sulpiride. Likewise, systemic administration of theophylline and CSC reversed catalepsy induced by a systemic D1 receptor blockade with SCH23390; theophylline also counteracted catalepsy after an intra-CPu D1 receptor blockade with SCH23390. Intracerebral co-microinfusions of the selective A(2A) receptor antagonist, MSX-3 together with a D1 (SCH23390) or D2 receptor [S(-) sulpiride] antagonist revealed that catalepsy due to intra-CPu D1 or D2 receptor blockade can be potently reversed by an intra-CPu A2A receptor blockade. In conclusion, our results with systemic and intra-CPu drug administration demonstrate that D1 and D2 receptor-mediated catalepsy can both be reversed by a concomitant blockade of A(2A) receptors. Our results implicate that the CPu is a critical neural substrate for antagonistic interactions of a D1/D2 receptor blockade and an A(2A) receptor blockade in control of motor activity. The present results provide further support for the view that A(2A) receptor antagonists may be potential therapeutics for the treatment of Parkinson's disease.
Collapse
Affiliation(s)
- W Hauber
- Department of Animal Physiology, Institute of Biology, University of Stuttgart, D-70550 Stuttgart, Germany.
| | | | | | | |
Collapse
|
32
|
Petty M, Pearson C, Monkman A, Casalini R, Capaccioli S, Nagel J. Application of impedance spectroscopy to the study of organic multilayer devices. Colloids Surf A Physicochem Eng Asp 2000. [DOI: 10.1016/s0927-7757(99)00559-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
33
|
von Deimling A, Fimmers R, Schmidt MC, Bender B, Fassbender F, Nagel J, Jahnke R, Kaskel P, Duerr EM, Koopmann J, Maintz D, Steinbeck S, Wick W, Platten M, Müller DJ, Przkora R, Waha A, Blümcke B, Wellenreuther R, Meyer-Puttlitz B, Schmidt O, Mollenhauer J, Poustka A, Stangl AP, Lenartz D, von Ammon K. Comprehensive allelotype and genetic anaysis of 466 human nervous system tumors. J Neuropathol Exp Neurol 2000; 59:544-58. [PMID: 10850867 DOI: 10.1093/jnen/59.6.544] [Citation(s) in RCA: 113] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Brain tumors pose a particular challenge to molecular oncology. Many different tumor entities develop in the nervous system and some of them appear to follow distinct pathogenic routes. Molecular genetic alterations have increasingly been reported in nervous system neoplasms. However, a considerable number of affected genes remain to be identified. We present here a comprehensive allelotype analysis of 466 nervous system tumors based on loss of heterozygosity (LOH) studies with 129 microsatellite markers that span the genome. Specific alterations of the EGFR, CDK4, CDKN2A, TP53, DMBT1, NF2, and PTEN genes were analyzed in addition. Our data point to several novel genetic loci associated with brain tumor development, demonstrate relationships between molecular changes and histopathological features, and further expand the concept of molecular tumor variants in neuro-oncology. This catalogue may provide a valuable framework for future studies to delineate molecular pathways in many types of human central nervous system tumors.
Collapse
Affiliation(s)
- A von Deimling
- Department of Neuropathology, Charité Humboldt University, Berlin, Germany
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
34
|
Port J, Nagel J, Faust U. Dynamisches Zustandsmodell spannungsgesteuerter Ionenkanäle. BIOMED ENG-BIOMED TE 2000. [DOI: 10.1515/bmte.2000.45.s1.375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
35
|
|
36
|
Newman S, Pitcairn G, Steed K, Harrison A, Nagel J. Deposition of fenoterol from pressurized metered dose inhalers containing hydrofluoroalkanes. J Allergy Clin Immunol 1999; 104:S253-7. [PMID: 10588986 DOI: 10.1016/s0091-6749(99)70042-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [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: 11/18/2022]
Abstract
The imaging technique of gamma scintigraphy has been used to quantify the total amount of drug deposited in the lungs and the pattern of regional lung deposition, for formulations of Berodual (Boehringer Ingelheim GmbH) delivered from pressurized metered dose inhalers formulated with chlorofluorocarbons, and with hydrofluoroalkane-134a or -227. Data were expressed as the mass of fenoterol deposited in the lungs from the Berodual formulations. All the formulations tested gave a whole lung deposition less than 20% of the metered (exvalve) dose. The mass of fenoterol deposited in the lungs for a solution formulation containing hydrofluoroalkane-134a was inversely proportional to the actuator nozzle diameter. The data suggest that the total and regional lung deposition of hydrofluoroalkane-based pressurized aerosol formulations is highly product-specific and that changes in bioavailability can be brought about by varying both the constituents of the formulation and the design of the actuator.
Collapse
Affiliation(s)
- S Newman
- Pharmaceutical Profiles Limited, Nottingham, United Kingdom
| | | | | | | | | |
Collapse
|
37
|
Li JH, Joppek C, Faust U, Nagel J. [Imaging cardiac impedance changes in the human thorax using impedance tomography]. BIOMED ENG-BIOMED TE 1998; 43 Suppl:52-3. [PMID: 9859253 DOI: 10.1515/bmte.1998.43.s1.52] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- J H Li
- Institut für Biomedizinische Technik, Universität Stuttgart
| | | | | | | |
Collapse
|
38
|
Wilde J, Wigman A, Nagel J, Oertel U, Beeby A, Tanner B, Petty M. Structural and optical properties of Langmuir—Blodgett films of a Schiff base coordination polymer: A material for hydrocarbon vapor sensing. ACTA ACUST UNITED AC 1998. [DOI: 10.1002/(sici)1521-4044(199806)49:6<294::aid-apol294>3.0.co;2-m] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
39
|
Abstract
Motor effects mediated through adenosine A2A receptors within the caudate-putamen were investigated in rats using bilateral microinfusions of MSX-3 (9 microg in 1 microl per side), a water-soluble phosphate prodrug of the selective A2A receptor antagonist MSX-2. Blockade of striatal A2A receptors produced a significant motor stimulation measured by an enhanced sniffing activity. Furthermore, catalepsy induced by systemic dopamine D1 (0.75 mg/kg SCH23390, i.p.) or dopamine D2 receptor blockade (1.5 mg/kg raclopride, i.p.) was potently reversed. These findings suggest that A2A receptors within the caudate-putamen are tonically activated by endogenous adenosine and that a striatal A2A receptor blockade produces motor stimulant effects, in particular in animals with dopamine hypofunction. The present results support the view that A2A receptor antagonists may be potentially useful therapeutics for the treatment of Parkinson's disease.
Collapse
Affiliation(s)
- W Hauber
- Department of Animal Physiology, Institute of Biology, University of Stuttgart, Germany
| | | | | | | |
Collapse
|
40
|
Ploetz R, Benscher D, Vázquez A, Colls A, Nagel J, Schaffer B. MANGO DECLINE: RESEARCH IN FLORIDA ON AN APPARENTLY WIDE-SPREAD DISEASE COMPLEX. ACTA ACUST UNITED AC 1997. [DOI: 10.17660/actahortic.1997.455.72] [Citation(s) in RCA: 3] [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: 11/17/2022]
|
41
|
Nagel J, Edholm O, Berger O, Jähnig F. Investigation of the proton release channel of bacteriorhodopsin in different intermediates of the photo cycle. A molecular dynamics study. Biochemistry 1997; 36:2875-83. [PMID: 9062117 DOI: 10.1021/bi962427h] [Citation(s) in RCA: 5] [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: 02/03/2023]
Abstract
Molecular dynamics simulations on bacteriorhodopsin were performed starting from a conformation based on electron cryomicroscopy studies [Henderson, R., et al. (1990) J. Mol. Biol. 213, 899-929]. We examined the proton release channel in different intermediates of the bacteriorhodopsin photocycle. In the simulations of the ground state, two stable sets of conformations were observed differing in the distance of the guanidinium group of Arg82 to the Schiff base. The set of conformations in which Arg82 is located closer to the Schiff base has a lower potential energy and agrees better with experimental data than the other set. With both sets, we performed a series of simulations in which the chromophore was isomerized to different states using purposive and nonpurposive methods. The energetic consideration of the different states argues for the location of the guanidinium group of Arg82 close to the Schiff base. The results also show that no C13-C14, C14-C15 dicis conformation of the retinal occurs in the K/L-intermediate of the photocycle instead supporting the occurrence of C13-C14 cis in these intermediates. In a last series of simulations, we modeled the M-intermediate of the bacteriorhodopsin photocycle. Again, comparison to different experimental data indicates that Arg82 points toward the Schiff base. We conclude that the guanidinium group of Arg82 is located close to the Schiff base at a distance of approximately 4.5 A and stays there at least up to the M-intermediate of the photocycle.
Collapse
Affiliation(s)
- J Nagel
- Max-Planck-Institut fur Biologie, Abteilung Membranbiochemie, Tubingen, Germany
| | | | | | | |
Collapse
|
42
|
Abstract
14C-deoxyglucose autoradiographs of attack rats were compared densitometrically with those of control rats whose electrodes were located nearby and elicited nonaggressive behaviors like those that accompanied the attack. Most closely associated with attack was the path from the ventromedial hypothalamus through the ventral supraoptic commissural pathway to the peripeduncular area, subparafascicular nucleus, zona incerta, and cuneiform area. Moderately correlated with attack were 4 visual areas: the dorsal and ventral lateral geniculate nuclei, pretectal area, and superior colliculus. Activity in the periaqueductal gray was unrelated to attack ipsilaterally and only weakly related contralaterally. In an orthogonal analysis, upward-oriented flight thresholds were significantly correlated with medial activation extending anteriorly to the lateral septal nucleus, dorsally to the thalamic paraventricular-parataenial region, and posteriorly to the periaqueductal gray.
Collapse
Affiliation(s)
- W W Roberts
- Department of Psychology, University of Minnesota, Minneapolis 55455, USA
| | | |
Collapse
|
43
|
Olea E, Gil MC, Tomicic M, Araya G, Chandía M, Quintana JC, Pinto L, Orellana P, Nagel J, Ortíz V. [Nationally produced 153SmEDTMP in the palliative treatment of metastatic bone cancer pain]. Rev Med Chil 1996; 124:805-12. [PMID: 9138368] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
153SmEDTMP was obtained from enriched 152Sm irradiated at the 5 MW Chilean Research Reactor and labelled at a molar ratio of 15:1 pH 7.5. Biodistribution, autoradiography, radiochemical purity tests were done for evaluation. 40 patients were treated with 37-55 MBq/kg weight. Bone scans using 99mTcHMDP were obtained prior and after treatment. Bone marrow depression was observed in 37% of them and normal liver function in all of them. In 45% the pain dissapear completely, in 22.5% significantly decreased and partially in 30%. In 17 patients more than one dosis was injected. Our preliminary results indicate that 153SmEDTMP is a promising radiotherapeutic agent for palliative treatment of metastatic bone cancer pain and encourage its use specially because it can be produced in countries with low economic resources, thus a large number of patients can get the benefits of this new procedure.
Collapse
Affiliation(s)
- E Olea
- Pontificia Universidad Católica de Chile, Santiago de Chile
| | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Abstract
14C-deoxyglucose autoradiographs of attack rats were compared densitometrically with those of control rats whose electrodes were located nearby and elicited nonaggressive behaviors like those that accompanied the attack. Most closely associated with attack was the path from the ventromedial hypothalamus through the ventral supraoptic commissural pathway to the peripeduncular area, subparafascicular nucleus, zona incerta, and cuneiform area. Moderately correlated with attack were 4 visual areas: the dorsal and ventral lateral geniculate nuclei, pretectal area, and superior colliculus. Activity in the periaqueductal gray was unrelated to attack ipsilaterally and only weakly related contralaterally. In an orthogonal analysis, upward-oriented flight thresholds were significantly correlated with medial activation extending anteriorly to the lateral septal nucleus, dorsally to the thalamic paraventricular-parataenial region, and posteriorly to the periaqueductal gray.
Collapse
Affiliation(s)
- W W Roberts
- Department of Psychology, University of Minnesota, Minneapolis 55455, USA
| | | |
Collapse
|
45
|
Grimberg SJ, Nagel J, Aitken MD. Kinetics of phenanthrene dissolution into water in the presence of nonionic surfactants. Environ Sci Technol 1995; 29:1480-1487. [PMID: 22276867 DOI: 10.1021/es00006a008] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
|
46
|
Olea E, Ortiz V, Nagel J, Arenas L. Bone seeking agent uptake in abdominal muscle after exercise. Clin Nucl Med 1995; 20:561-2. [PMID: 7648752 DOI: 10.1097/00003072-199506000-00027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- E Olea
- Nuclear Medicine Service, Catholic University Hospital, Santiago, Chile
| | | | | | | |
Collapse
|
47
|
Spangenberg G, Vallés MP, Wang ZY, Montavon P, Nagel J, Potrykus I. Asymmetric somatic hybridization between tall fescue (Festuca arundinacea Schreb.) and irradiated Italian ryegrass (Lolium multiflorum Lam.) protoplasts. Theor Appl Genet 1994; 88:509-519. [PMID: 24186103 DOI: 10.1007/bf01240911] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/1993] [Accepted: 09/09/1993] [Indexed: 06/02/2023]
Abstract
Intergeneric asymmetric somatic hybrids have been obtained by the fusion of metabolically inactivated protoplasts from embryogenic suspension cultures ofFestuca arundinacea (recipient) and protoplasts from a non-morphogenic cell suspension ofLolium multiflorum (donor) irradiated with 10, 25, 50, 100, 250 and 500 Gy of X-rays. Regenerating calli led to the recovery of genotypically and phenotypically different asymmetric somatic hybridFestulolium plants. The genome composition of the asymmetric somatic hybrid clones was characterized by quantitative dot-blot hybridizations using dispersed repetitive DNA sequences specific to tall fescue and Italian ryegrass. Data from dot-blot hybridizations using two cloned Italian ryegrass-specific sequences as probes showed that irradiation favoured a unidirectional elimination of most or part of the donor chromosomes in asymmetric somatic hybrid clones obtained from fusion experiments using donor protoplasts irradiated at doses ≤ 250 Gy. Irradiation of cells of the donor parent with 500 Gy prior to protoplast fusion produced highly asymmetric nuclear hybrids with over 80% elimination of the donor genome as well as clones showing a complete loss of donor chromosomes. Further information on the degree of asymmetry in regenerated hybrid plants was obtained from chromosomal analysis including in situ hybridizations withL. multiflorum-specific repetitive sequences. A Southern blot hybridization analysis using one chloroplast and six mitochondrial-specific probes revealed preferentially recipient-type organelles in asymmetric somatic hybrid clones obtained from fusion experiments with donor protoplasts irradiated with doses higher than 100 Gy. It is concluded that the irradiation of donor cells before fusion at different doses can be used for producing both nuclear hybrids with limited donor DNA elimination or highly asymmetric nuclear hybrid plants in an intergeneric graminaceous combination. For a wide range of radiation doses tested (25-250Gy), the degree of the species-specific genome elimination from the irradiated partner seems not to be dose dependent. A bias towards recipient-type organelles was apparent when extensive donor nuclear genome elimination occurred.
Collapse
Affiliation(s)
- G Spangenberg
- Institute for Plant Sciences, Swiss Federal Institute of Technology, CH-8092, Zürich, Switzerland
| | | | | | | | | | | |
Collapse
|
48
|
Abstract
There is evidence that a putative glioma tumor suppressor locus resides on the long arm of chromosome 19. We present data on 161 gliomas from 156 patients, which were studied by microsatellite analysis for loss of heterozygosity (LOH) on chromosome 19. Eight loci on the long arm and 2 loci on the short arm of chromosome 19 were examined. LOH on 19q was observed in 3/19 astrocytomas (WHO grade II), 12/27 anaplastic astrocytomas (WHO grade III), 16/76 cases of glioblastoma multiforme WHO (grade IV), 4/9 oligodendrogliomas (WHO grade II), 3/5 anaplastic oligodendrogliomas (WHO grade III), 5/9 mixed oligo-astrocytomas (WHO grade II) and 8/10 anaplastic oligo-astrocytomas (WHO grade III). While 31 of the tumors with LOH on chromosomal arm 19q exhibited allelic loss at every informative locus, 20 tumors showed terminal or interstitial deletions. In contrast to astrocytomas and glioblastomas, tumors with an oligodendroglial component had predominantly lost the entire long arm of chromosome 19. The common region of overlap in gliomas was located on 19q13.2-q13.4 between the markers D19S178 and D19S180. Our data confirm the involvement of a putative tumor suppressor gene on chromosomal arm 19q in gliomas and assign this gene to 19q13.2-q13.4.
Collapse
Affiliation(s)
- A von Deimling
- Institut für Neuropathologie, Universitätskliniken, Bonn, Germany
| | | | | | | | | | | | | |
Collapse
|
49
|
von Deimling A, Bender B, Jahnke R, Waha A, Kraus J, Albrecht S, Wellenreuther R, Fassbender F, Nagel J, Menon AG. Loci associated with malignant progression in astrocytomas: a candidate on chromosome 19q. Cancer Res 1994; 54:1397-401. [PMID: 8137236] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
WHO grades II and III astrocytomas frequently exhibit loss of genetic material on chromosomes 9p, 11p, 17p, 19q, and 22q, indicating that these chromosomal regions harbor tumor suppressor genes involved in the pathogenesis of astrocytic neoplasms. The present study was conducted to examine whether these genetic regions are involved in the process of malignant progression from astrocytoma WHO grade II (A II) to anaplastic astrocytoma WHO grade III (A III). We have analyzed 44 astrocytomas, i.e., 18 A II and 26 A III for loss of heterozygosity (LOH) on chromosomes 1p, 1q, 9p, 9q, 10p, 10q, 11p, 13q, 17p, 19p, 19q, and 22q and for amplification of the epidermal growth factor receptor gene. A polymerase chain reaction-based assay with microsatellite repeat sequences was used for the detection of polymorphisms on silver-stained polyacrylamide gels. LOH on 9p was seen in 1 of 18 (6%) informative cases of A II and 4 of 24 (17%) informative cases of A III. LOH on 17p was observed in 9 of 17 (53%) informative cases of A II and 15 of 26 (58%) informative cases of A III. LOH on 19q was detected in 2 of 18 (11%) informative cases of A II and in 12 of 26 (46%) informative cases of A III. The association of LOH on 19q with anaplasia in astrocytoma was significant (P = 0.015). Amplification of the epidermal growth factor receptor gene was not detected in A II or A III. These data suggest that a putative tumor suppressor gene on the long arm of chromosome 19 is a candidate for a gene associated with tumor progression in astrocytic gliomas.
Collapse
Affiliation(s)
- A von Deimling
- Institut für Neuropathologie, Universitätskliniken Bonn, Germany
| | | | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Kippenhan JS, Barker WW, Nagel J, Grady C, Duara R. Neural-network classification of normal and Alzheimer's disease subjects using high-resolution and low-resolution PET cameras. J Nucl Med 1994; 35:7-15. [PMID: 8271062] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
UNLABELLED Neural-network classification methods were applied to studies of FDG-PET images of the brain acquired from a total of 77 "probable" Alzheimer's disease and 124 normal subjects at two different centers. METHODS Classification performances, as determined by relative-operating-characteristic (ROC) analyses of cross-validation experiments, were measured for FDG PET images obtained with either a 15-mm FWHM PETT V or a 6-mm FWHM Scanditronix PC-1024-7B camera for various methods of data representation. Neural networks were trained to distinguish between normal and abnormal subjects on the basis of regional metabolic patterns. For both databases, classification performance could be improved by increasing the "resolution" of the representation (decreasing the region size) and by normalizing the regional metabolic values to the value of a reference region (occipital region). RESULTS The optimal classification performance for Scanditronix data (ROC area = 0.95) was higher than that for PETT V data (ROC area = 0.87). Under Bayesian theory, the classification performance with Scanditronix data corresponded to an ability to change a pre-test probability of disease of 50% to a post-test probability of either 90% for a positive classification or 10% for a negative classification. CONCLUSION This classification can be used to either strongly confirm or rule out the presence of abnormalities.
Collapse
Affiliation(s)
- J S Kippenhan
- Wien Center, Mt. Sinai Medical Center, Miami Beach, FL 33140
| | | | | | | | | |
Collapse
|