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Angelopoulou G, Kasselimis D, Varkanitsa M, Tsolakopoulos D, Papageorgiou G, Velonakis G, Meier E, Karavassilis E, Pantoleon V, Laskaris N, Kelekis N, Tountopoulou A, Vassilopoulou S, Goutsos D, Kiran S, Weiller C, Rijntjes M, Potagas C. Investigating silent pauses in connected speech: integrating linguistic, neuropsychological, and neuroanatomical perspectives across narrative tasks in post-stroke aphasia. Front Neurol 2024; 15:1347514. [PMID: 38682034 PMCID: PMC11047180 DOI: 10.3389/fneur.2024.1347514] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 03/07/2024] [Indexed: 05/01/2024] Open
Abstract
Introduction Silent pauses are regarded as integral components of the temporal organization of speech. However, it has also been hypothesized that they serve as markers for internal cognitive processes, including word access, monitoring, planning, and memory functions. Although existing evidence across various pathological populations underscores the importance of investigating silent pauses' characteristics, particularly in terms of frequency and duration, there is a scarcity of data within the domain of post-stroke aphasia. Methods The primary objective of the present study is to scrutinize the frequency and duration of silent pauses in two distinct narrative tasks within a cohort of 32 patients with chronic post-stroke aphasia, in comparison with a control group of healthy speakers. Subsequently, we investigate potential correlation patterns between silent pause measures, i.e., frequency and duration, across the two narrative tasks within the patient group, their performance in neuropsychological assessments, and lesion data. Results Our findings showed that patients exhibited a higher frequency of longer-duration pauses in both narrative tasks compared to healthy speakers. Furthermore, within-group comparisons revealed that patients tended to pause more frequently and for longer durations in the picture description task, while healthy participants exhibited the opposite trend. With regard to our second research question, a marginally significant interaction emerged between performance in semantic verbal fluency and the narrative task, in relation to the location of silent pauses-whether between or within clauses-predicting the duration of silent pauses in the patient group. However, no significant results were observed for the frequency of silent pauses. Lastly, our study identified that the duration of silent pauses could be predicted by distinct Regions of Interest (ROIs) in spared tissue within the left hemisphere, as a function of the narrative task. Discussion Overall, this study follows an integrative approach of linguistic, neuropsychological and neuroanatomical data to define silent pauses in connected speech, and illustrates interrelations between cognitive components, temporal aspects of speech, and anatomical indices, while it further highlights the importance of studying connected speech indices using different narrative tasks.
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Affiliation(s)
- G. Angelopoulou
- Neuropsychology&Language Disorders Unit, 1st Department of Neurology, Eginition Hospital, Faculty of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - D. Kasselimis
- Neuropsychology&Language Disorders Unit, 1st Department of Neurology, Eginition Hospital, Faculty of Medicine, National and Kapodistrian University of Athens, Athens, Greece
- Department of Psychology, Panteion University of Social and Political Sciences, Athens, Greece
| | - M. Varkanitsa
- Center for Brain Recovery, Boston University, Boston, MA, United States
| | - D. Tsolakopoulos
- Neuropsychology&Language Disorders Unit, 1st Department of Neurology, Eginition Hospital, Faculty of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - G. Papageorgiou
- Neuropsychology&Language Disorders Unit, 1st Department of Neurology, Eginition Hospital, Faculty of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - G. Velonakis
- 2nd Department of Radiology, General University Hospital “Attikon”, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - E. Meier
- The Aphasia Network Lab, Department of Communication Sciences and Disorders, Northeastern University, Boston, MA, United States
| | - E. Karavassilis
- 2nd Department of Radiology, General University Hospital “Attikon”, Medical School, National and Kapodistrian University of Athens, Athens, Greece
- School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - V. Pantoleon
- 2nd Department of Radiology, General University Hospital “Attikon”, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - N. Laskaris
- Neuropsychology&Language Disorders Unit, 1st Department of Neurology, Eginition Hospital, Faculty of Medicine, National and Kapodistrian University of Athens, Athens, Greece
- Department of Industrial Design and Production Engineering, School of Engineering, University of West Attica, Athens, Greece
| | - N. Kelekis
- 2nd Department of Radiology, General University Hospital “Attikon”, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - A. Tountopoulou
- Stroke Unit, 1st Department of Neurology, Eginition Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - S. Vassilopoulou
- Stroke Unit, 1st Department of Neurology, Eginition Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - D. Goutsos
- Department of Linguistics, School of Philosophy, National and Kapodistrian University of Athens, Athens, Greece
| | - S. Kiran
- Center for Brain Recovery, Boston University, Boston, MA, United States
| | - C. Weiller
- Department of Neurology and Clinical Neuroscience, University Hospital Freiburg, Freiburg, Germany
| | - M. Rijntjes
- Department of Neurology and Clinical Neuroscience, University Hospital Freiburg, Freiburg, Germany
| | - C. Potagas
- Neuropsychology&Language Disorders Unit, 1st Department of Neurology, Eginition Hospital, Faculty of Medicine, National and Kapodistrian University of Athens, Athens, Greece
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Paganini S, Meier E, Terhorst Y, Wurst R, Hohberg V, Schultchen D, Strahler J, Wursthorn M, Baumeister H, Messner EM. Stress Management Apps: Systematic Search and Multidimensional Assessment of Quality and Characteristics. JMIR Mhealth Uhealth 2023; 11:e42415. [PMID: 37642999 PMCID: PMC10498318 DOI: 10.2196/42415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 06/06/2023] [Indexed: 08/31/2023] Open
Abstract
BACKGROUND Chronic stress poses risks for physical and mental well-being. Stress management interventions have been shown to be effective, and stress management apps (SMAs) might help to transfer strategies into everyday life. OBJECTIVE This review aims to provide a comprehensive overview of the quality and characteristics of SMAs to give potential users or health professionals a guideline when searching for SMAs in common app stores. METHODS SMAs were identified with a systematic search in the European Google Play Store and Apple App Store. SMAs were screened and checked according to the inclusion criteria. General characteristics and quality were assessed by 2 independent raters using the German Mobile Application Rating Scale (MARS-G). The MARS-G assesses quality (range 1 to 5) on the following four dimensions: (1) engagement, (2) functionality, (3) esthetics, and (4) information. In addition, the theory-based stress management strategies, evidence base, long-term availability, and common characteristics of the 5 top-rated SMAs were assessed and derived. RESULTS Of 2044 identified apps, 121 SMAs were included. Frequently implemented strategies (also in the 5 top-rated SMAs) were psychoeducation, breathing, and mindfulness, as well as the use of monitoring and reminder functions. Of the 121 SMAs, 111 (91.7%) provided a privacy policy, but only 44 (36.4%) required an active confirmation of informed consent. Data sharing with third parties was disclosed in only 14.0% (17/121) of the SMAs. The average quality of the included apps was above the cutoff score of 3.5 (mean 3.59, SD 0.50). The MARS-G dimensions yielded values above this cutoff score (functionality: mean 4.14, SD 0.47; esthetics: mean 3.76, SD 0.73) and below this score (information: mean 3.42, SD 0.46; engagement: mean 3.05, SD 0.78). Most theory-based stress management strategies were regenerative stress management strategies. The evidence base for 9.1% (11/121) of the SMAs could be identified, indicating significant group differences in several variables (eg, stress or depressive symptoms) in favor of SMAs. Moreover, 38.0% (46/121) of the SMAs were no longer available after a 2-year period. CONCLUSIONS The moderate information quality, scarce evidence base, constraints in data privacy and security features, and high volatility of SMAs pose challenges for users, health professionals, and researchers. However, owing to the scalability of SMAs and the few but promising results regarding their effectiveness, they have a high potential to reach and help a broad audience. For a holistic stress management approach, SMAs could benefit from a broader repertoire of strategies, such as more instrumental and mental stress management strategies. The common characteristics of SMAs with top-rated quality can be used as guidance for potential users and health professionals, but owing to the high volatility of SMAs, enhanced evaluation frameworks are needed.
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Affiliation(s)
- Sarah Paganini
- Department of Sport Psychology, Institute of Sports and Sport Science, University of Freiburg, Freiburg, Germany
| | - Evelyn Meier
- University of Education Freiburg, Freiburg, Germany
| | - Yannik Terhorst
- Clinical Psychology and Psychotherapy, Ulm University, Ulm, Germany
| | - Ramona Wurst
- Department of Sport Psychology, Institute of Sports and Sport Science, University of Freiburg, Freiburg, Germany
| | - Vivien Hohberg
- Department of Sport, Exercise and Health, Faculty of Medicine, University of Basel, Basel, Switzerland
| | - Dana Schultchen
- Clinical and Health Psychology, Ulm University, Ulm, Germany
| | - Jana Strahler
- Department of Sport Psychology, Institute of Sports and Sport Science, University of Freiburg, Freiburg, Germany
| | - Max Wursthorn
- Department of Public and Nonprofit Management, University of Freiburg, Freiburg, Germany
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Wälti M, Thielen M, Melnykowycz M, Gasparri E, Meier E. Preliminary validation of in-ear EEG against PSG system for sleep staging. Sleep Med 2022. [DOI: 10.1016/j.sleep.2022.05.073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Capel P, Fischer M, Meier E, Haynes J, Oermann C, Kohmetscher J, Beattie S. 97: Optimizing oral glucose tolerance test completion at a pediatric cystic fibrosis care center: A 10-year continuing quality improvement effort. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01522-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Meier E, Beattie S, Snell Y, Singh A. 73: Improved screening for bone disease in people with cystic fibrosis: A pediatric care center’s experience. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01498-3] [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: 11/26/2022]
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Elson E, Meier E, Gripka M, Oermann C. 449: Antimicrobial susceptibility testing practices at cystic fibrosis care centers. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01873-7] [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]
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Eberle B, Rogers S, Vogt D, Meier E, Moser L, Gomez S, Desborough S, Riesterer O, Takacs I, Hasler P, Bodis S. Low Dose Radiotherapy Achieves Analgesia and Gain of Function in Epicondylitis, Finger Arthritis and Plantar Fasciitis. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1290] [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: 11/17/2022]
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Meier E, Gelse K, Trieb K, Pachowsky M, Hennig FF, Mauerer A. First clinical study of a novel complete metal-free ceramic total knee replacement system. J Orthop Surg Res 2016; 11:21. [PMID: 26857704 PMCID: PMC4745159 DOI: 10.1186/s13018-016-0352-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2015] [Accepted: 01/21/2016] [Indexed: 11/11/2022] Open
Abstract
Background The aim of the study was to evaluate the safety and efficacy of a novel metal-free ceramic total knee replacement system. Methods Thirty-eight primary total knee arthroplasties (TKAs) were performed on 34 patients using the metal-free BPK-S ceramic total knee replacement system with both the femoral and tibial components of an alumina/zirconia ceramic composite. The clinical outcome was evaluated pre- and postoperatively at 3 (n = 32 TKA) and 12 months (n = 32 TKA) using the Knee Society Score (KSS), the Oxford Knee Score and the EQ-5D. Safety analysis was performed by radiological examination and assessment of adverse events. Results Postoperatively, the KSS, Oxford Knee Score and EQ-5D improved significantly at 3 and 12 months (p < 0.001). Non-progressive partial radiolucent lines were observed in six cases, but there was no osteolysis and no implant loosening. Induction or exacerbation of allergies did not occur during the follow-up. Conclusions The metal-free BPK-S ceramic total knee replacement system proved to be a safe and clinically efficient alternative to metal implants in this short-term follow-up study.
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Affiliation(s)
- E Meier
- Department of Orthopaedic and Trauma Surgery, University Hospital Erlangen, Krankenhausstr. 12, 91054, Erlangen, Germany.
| | - K Gelse
- Department of Orthopaedic and Trauma Surgery, University Hospital Erlangen, Krankenhausstr. 12, 91054, Erlangen, Germany
| | - K Trieb
- Hospital Wels, Grieskirchnerstr. 42, A-4600, Wels, Austria
| | - M Pachowsky
- Department of Orthopaedic and Trauma Surgery, University Hospital Erlangen, Krankenhausstr. 12, 91054, Erlangen, Germany
| | - F F Hennig
- Department of Orthopaedic and Trauma Surgery, University Hospital Erlangen, Krankenhausstr. 12, 91054, Erlangen, Germany
| | - A Mauerer
- Department of Orthopaedic and Trauma Surgery, University Hospital Erlangen, Krankenhausstr. 12, 91054, Erlangen, Germany
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Laure S, Fröhling M, Schultmann F, Meier E, Schweinle J, Susanto A. Ökonomische, ökologische und soziale Bewertung der Lignocellulose-Bioraffinerie-Wertschöpfungskette. CHEM-ING-TECH 2014. [DOI: 10.1002/cite.201450587] [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: 11/08/2022]
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Kruis W, Meier E, Schumacher M, Mickisch O, Greinwald R, Mueller R. Randomised clinical trial: mesalazine (Salofalk granules) for uncomplicated diverticular disease of the colon--a placebo-controlled study. Aliment Pharmacol Ther 2013; 37:680-90. [PMID: 23414061 DOI: 10.1111/apt.12248] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2012] [Revised: 08/01/2012] [Accepted: 01/24/2013] [Indexed: 12/22/2022]
Abstract
BACKGROUND Robust evidence regarding medical intervention for symptomatic uncomplicated colonic diverticular disease (DD) is sparse. AIM To investigate mesalazine (Salofalk granules) in this setting. METHODS In a double-blind, placebo-controlled, multicentre, 6-week trial, patients were randomised to mesalazine 1000 mg three times daily or placebo. Primary efficacy endpoint was change in lower abdominal pain to week 4 (baseline defined using pain score from 7 days pre-treatment). RESULTS Median change in lower abdominal pain with mesalazine vs. placebo was -37 (n = 56) vs. -33 (n = 61) [P = 0.374; 95% CI (-11; 4)] in the intent-to-treat (ITT) population, and -41 (n = 40) vs. -33 (n = 51) [P = 0.053; 95% CI (-18; 0)] in the per-protocol (PP) population, i.e. the primary endpoint was not significantly different. Post hoc adjustment for confounding factors ('baseline pain intensity', 'baseline symptom score (Brodribb)', and 'localisation of diverticula in the descending colon') resulted in P = 0.111 [ITT, 95% CI (-15.4; 1.6)] and P = 0.005 [PP, 95% CI (-19.7; -3.5)]. Between-group differences increased using pain score on day 1 as baseline, and reached significance for the PP population [mesalazine -42, placebo -26, P = 0.010; 95% CI (-25; -3)]. Median change in combined symptom score from baseline to week 4 was 257 mm with mesalazine vs. 198 mm with placebo [P = 0.064; 95% CI (-3; 105)]. More placebo-treated patients received analgesic/spasmolytic concomitant medication (34.4% vs. mesalazine 21.4%), indicating improved pain relief with mesalazine (P = 0.119). Safety was comparable. CONCLUSIONS A daily dose of 3.0 g mesalazine may relieve pain during a symptomatic flare of uncomplicated DD. In this, the first placebo-controlled double-blind trial in acute uncomplicated DD, mesalazine showed promising therapeutic efficacy.
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Affiliation(s)
- W Kruis
- Innere Abteilung Ev, Krankenhaus Kalk, University of Cologne, Köln, Germany.
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Meier E, Lechner WV, Miller MB, Wiener JL. Changes in Smokeless Tobacco Use Over Four Years Following a Campus-Wide Anti-tobacco Intervention. Nicotine Tob Res 2013; 15:1382-7. [DOI: 10.1093/ntr/nts337] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Axelsen LN, Keung W, Pedersen HD, Meier E, Riber D, Kjølbye AL, Petersen JS, Proctor SD, Holstein-Rathlou NH, Lopaschuk GD. Glucagon and a glucagon-GLP-1 dual-agonist increases cardiac performance with different metabolic effects in insulin-resistant hearts. Br J Pharmacol 2012; 165:2736-48. [PMID: 22014161 DOI: 10.1111/j.1476-5381.2011.01714.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND AND PURPOSE The prevalence of heart disease continues to rise, particularly in subjects with insulin resistance (IR), and improved therapies for these patients is an important challenge. In this study we evaluated cardiac function and energy metabolism in IR JCR:LA-cp rat hearts before and after treatment with an inotropic compound (glucagon), a glucagon-like peptide-1 (GLP-1) receptor agonist (ZP131) or a glucagon-GLP-1 dual-agonist (ZP2495). EXPERIMENTAL APPROACH Hearts from IR and lean JCR:LA rats were isolated and perfused in the working heart mode for measurement of cardiac function and metabolism before and after addition of vehicle, glucagon, ZP131 or ZP2495. Subsequently, cardiac levels of nucleotides and short-chain CoA esters were measured by HPLC. KEY RESULTS Hearts from IR rats showed decreased rates of glycolysis and glucose oxidation, plus increased palmitate oxidation rates, although cardiac function and energy state (measured by ATP/AMP ratios) was normal compared with control rats. Glucagon increased glucose oxidation and glycolytic rates in control and IR hearts, but the increase was not enough to avoid AMP and ADP accumulation in IR hearts. ZP131 had no significant metabolic or functional effects in either IR or control hearts. In contrast, ZP2495 increased glucose oxidation and glycolytic rates in IR hearts to a similar extent to that of glucagon but with no concomitant accumulation of AMP or ADP. CONCLUSION AND IMPLICATIONS Whereas glucagon compromised the energetic state of IR hearts, glucagon-GLP-1 dual-agonist ZP2495 appeared to preserve it. Therefore, a glucagon-GLP-1 dual-agonist may be beneficial compared with glucagon alone in the treatment of severe heart failure or cardiogenic shock in subjects with IR.
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Affiliation(s)
- L N Axelsen
- Cardiovascular Research Centre, Mazankowski Alberta Heart Institute, and Metabolic and Cardiovascular Diseases Laboratory, Edmonton, AB, Canada.
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Gow J, Macejko T, Bergmann M, Meier E, Abelson M, Williams J, McNamara T. Bepotastine Besilate Ophthalmic Solution 1.5% Reduces Nonocular Composite Symptom (NOCS) Scores 16 Hours Following Dosing in the Conjunctival Allergen Challenge (CAC) Model of Allergic Conjunctivitis. J Allergy Clin Immunol 2011. [DOI: 10.1016/j.jaci.2010.12.1016] [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: 10/18/2022]
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Hyttel J, Arnt J, Bøgesø K, Christensen AV, Larsen JJ, Lembøl HL, Meier E, Sánchez C. Neurochemical and behavioural profile of Lu 17-133, (±)-trans-4-[3-(3,4-dichlorophenyl)-indan-1-yl]-1-piperazineethanol, an inhibitor of the uptake of dopamine and noradrenaline. Drug Dev Res 2004. [DOI: 10.1002/ddr.430130404] [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: 11/10/2022]
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Meier E. Einfluß konzentrations- und temperaturabhängiger Diffusionskoeffizienten auf die Trocknung hygroskopischer Kunststoffe. CHEM-ING-TECH 2004. [DOI: 10.1002/cite.330410715] [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: 11/12/2022]
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Meier E. Act to Leave No Child Behind introduced. Pediatr Nurs 2001; 27:426. [PMID: 12025286] [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: 02/25/2023]
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Buser D, Meier E, Magnin P, Rees TD. [Oral lichen planus. 2. Therapy possibilities and current treatment concepts]. Schweiz Monatsschr Zahnmed 2001; 111:170-87. [PMID: 11269020] [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] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Affiliation(s)
- D Buser
- Klinik für Oralchirurgie und Stomatologie, Zahnmedizinische Kliniken der Universität Bern
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Meier E. Debate over cost of AIDS drugs in Africa: children remain the most vulnerable. Pediatr Nurs 2001; 27:309-10. [PMID: 12964678] [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: 03/04/2023]
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Leclerc D, Stavolone L, Meier E, Guerra-Peraza O, Herzog E, Hohn T. The product of ORF III in cauliflower mosaic virus interacts with the viral coat protein through its C-terminal proline rich domain. Virus Genes 2001; 22:159-65. [PMID: 11324752 DOI: 10.1023/a:1008121228637] [Citation(s) in RCA: 24] [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: 11/12/2022]
Abstract
Using the yeast two-hybrid system, we show that the ORF III product of cauliflower mosaic virus (pIII) interacts through its C-terminus with the viral coat protein. The last five amino acids of pIII were essential for the interaction and virus infectivity. Deletion of the last three amino acids or the mutation F129A decreased the strength of the interaction by 90%. We further show that pIII is closely associated with virus particles found in the inclusion bodies of infected plants but not in viral particles released from the inclusion bodies by urea treatment.
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Affiliation(s)
- D Leclerc
- CHUQ, Pav.CHUL, Center de Recherche en Infectiologie, P. Quebec, Canada
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Meier E. Children and international human rights abuses. Pediatr Nurs 2000; 26:545-6. [PMID: 12026351] [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: 02/25/2023]
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Meier E. Supreme court ruling on FDA oversight of tobacco. Pediatr Nurs 2000; 26:414. [PMID: 12026480] [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: 02/25/2023]
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Meier E. Child abuse and neglect. Pediatr Nurs 2000; 26:414. [PMID: 12026479] [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: 02/25/2023]
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Meier E. Reducing illegal BAC levels across the country. Orthop Nurs 2000; 19:80. [PMID: 11153328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/18/2023] Open
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Abstract
Application of bicuculline (20 microm) in a horizontal slice preparation of the rat limbic system induced epileptiform discharges ('bursts') that spread from the hippocampus to the entorhinal cortex (EC) and the basolateral amygdala (BLA). These bursts were time locked, with the CA3-CA2 regions discharging first at a 0.1+/-0. 008Hz (n=30 slices) frequency, followed after 27+/-3 ms by the superficial layers of the EC and after 44.3+/-3 ms by the BLA. Application of 50 microM noradrenaline (NA) for 4 min reduced the burst frequency to 40% of its initial value. Pharmacological study of NA action on burst frequency revealed that it consisted of a beta adrenoreceptor-mediated increase and an alpha(2) adrenoreceptor-mediated decrease of epileptiform bursting frequency.
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Affiliation(s)
- R Stoop
- Institut de Biologie Cellulaire et de Morphologie, Rue du Bugnon 9, CH-1005, Lausanne, Switzerland
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Meier E. Medicare, Social Security, and competitive benefits are neglected nursing issues. Nurs Econ 2000; 18:168-70. [PMID: 11052020] [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: 02/18/2023]
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Meier E. Legislative efforts to combat sexual trafficking and slavery of women and children. Pediatr Nurs 2000; 26:329-30. [PMID: 12026401] [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: 02/25/2023]
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Meier E. Groups support insurance coverage for clinical trials. ONS News 2000; 15:9. [PMID: 11310006] [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: 02/19/2023]
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28
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Meier E. Legislative efforts to combat sexual trafficking and slavery of women and children. Pediatr Nurs 2000; 26:216-7. [PMID: 12026280] [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: 02/25/2023]
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29
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Abstract
Puralpha is a 39-kDa sequence-specific single-stranded DNA/RNA binding protein with the ability to modulate transcription of several genes containing the Pur element in their promoter region. Human and mouse Puralpha exhibit an extraordinary degree of conservation with only two changes at amino acid residues 49 and 306. A 15-kb genomic clone encompassing the mouse Puralpha gene was isolated by screening the mouse genomic library, using a PCR-amplified fragment from human Puralpha cDNA. Results from sequencing analysis confirmed the isolated genomic clone to be Puralpha and not the other members of the Pur family, including Purbeta. Characterization of the mouse Puralpha gene by restriction analysis/Southern blotting and sequencing revealed that the Puralpha gene contains only one intron within the 5' UTR and the open reading frame was intact. Using chromosomal markers, the Puralpha gene was mapped to chromosome 18 in mouse and rat.
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Affiliation(s)
- V Muralidharan
- Center for Neurovirology and Cancer Biology, College of Science and Technology, Temple University, Philadelphia, Pennsylvania 19122, USA
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30
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Meier E. RU-486 and implications for use among adolescents seeking an abortion. Pediatr Nurs 2000; 26:93-4. [PMID: 12026325] [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] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Affiliation(s)
- E Meier
- Anthony J. Jannetti, Inc., Nursing Economic$ Legislative Services Division, Washington, DC, USA
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31
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Meier E. Is unionization the answer for nurses and nursing? Nurs Econ 2000; 18:36-7. [PMID: 11029919] [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: 02/17/2023]
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32
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Meier E. Federal government addresses tobacco in many arenas. ONS News 1999; 14:10. [PMID: 12017703] [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: 02/25/2023]
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33
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Meier E. Child pornography, the Internet, and congressional activity. Pediatr Nurs 1999; 25:661. [PMID: 12024387] [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] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Affiliation(s)
- E Meier
- Anthony J. Jannetti, Inc., Nursing Economic$ Legislative Services Division, Washington, DC, USA
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34
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Meier E. Congressional leaders work to achieve quality cancer care. ONS News 1999; 14:19. [PMID: 10876536] [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: 02/16/2023]
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35
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Meier E. Comprehensive children's health bill to be introduced. Pediatr Nurs 1999; 25:560, 568. [PMID: 12024407] [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] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Affiliation(s)
- E Meier
- Anthony J. Jannetti, Inc., Nursing Economic$ Legislative Services Division, Washington, DC, USA
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36
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Meier E. The image of a nurse--myth vs. reality. Nurs Econ 1999; 17:273-5. [PMID: 10711177] [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] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Affiliation(s)
- E Meier
- Legislative Services, Nursing Economics, Washington, DC, USA
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37
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Meier E. Update on child abuse and neglect legislative efforts. Pediatr Nurs 1999; 25:436. [PMID: 12024365] [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] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Affiliation(s)
- E Meier
- Anthony J. Jannetti, Inc., Nursing Economic$ Legislative Services Division, Washington, DC, USA
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38
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Liao Y, Venhuis BJ, Rodenhuis N, Timmerman W, Wikström H, Meier E, Bartoszyk GD, Böttcher H, Seyfried CA, Sundell S. New (sulfonyloxy)piperazinyldibenzazepines as potential atypical antipsychotics: chemistry and pharmacological evaluation. J Med Chem 1999; 42:2235-44. [PMID: 10377229 DOI: 10.1021/jm991005d] [Citation(s) in RCA: 101] [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: 11/29/2022]
Abstract
A series of 2- or 8-trifluoromethylsulfonyloxy (TfO) and 2- or 8-methylsulfonyloxy (MsO) 11-piperazinyldibenzodiazepines, -oxazepines, and -thiazepines were synthesized and evaluated in pharmacological models for their potential clozapine-like properties. In receptor binding assays, the 2-TfO analogues (18a, GMC2-83; 24, GMC3-06; and previously reported GMC1-169, 9a) of the dibenzazepines have profiles comparable to that of clozapine, acting on a variety of CNS receptors except they lack M1 receptor affinity. Introduction of 2-TfO to clozapine leads to compound 9e (GMC61-39) which has a similar binding profile as that of clozapine including having M1 receptor affinity. Interestingly, the MsO analogues, as well as the 8-TfO analogues, have no or weak dopaminergic and serotonergic affinities, but all 8-sulfonyloxy analogues do have M1 affinities. In behavioral studies performed to indicate the potential antipsychotic efficacy and the propensity to induce EPS, 2-TfO analogues blocked effectively the apomorphine-induced climbing in mice in a dose-dependent manner with ED50 values (mg/kg) of 2.1 sc for 9a, 1.3 po for 18a, 2.6 sc for 24, and 8.2 sc for 9e. On the other hand, they showed a clear dose separation with regard to their ED50 values (mg/kg) for indicating catalepsy in rats (>44 sc for 9a, 28 po for 18a, 30 sc for 24, and >50 sc for 9e, respectively), thus implicating a more favorable therapeutic ratio (K/A, ED50 climbing/ED50 catalepsy) in comparison with typical neuroleptics such as haloperidol and isoclozapine. Furthermore, compound 18a was also demonstrated to be an orally potent DA antagonist with an ED50 value of 0.7 mg/kg po in the ex vivo L-DOPA accumulation model. The present study contributes to the SAR of 11-piperazinyldibenzazepines, and the 2-TfO analogues of 11-piperazinyldibenzazepines are promising candidates as clozapine-like atypical antipsychotics with low propensity to induce EPS.
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Affiliation(s)
- Y Liao
- Department of Medical Biochemistry, University of Göteborg, Box 440, SE-405 30 Göteborg, Sweden.
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39
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Meier E. ONS members are urged to support clinical trials legislation. ONS News 1999; 14:6. [PMID: 10569068] [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: 02/14/2023]
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40
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Pedersen H, Bräuner-Osborne H, Ball RG, Frydenvang K, Meier E, Bøgesø KP, Krogsgaard-Larsen P. Synthesis and muscarinic receptor pharmacology of a series of 4,5,6,7-tetrahydroisothiazolo[4,5-c]pyridine bioisosteres of arecoline. Bioorg Med Chem 1999; 7:795-809. [PMID: 10400332 DOI: 10.1016/s0968-0896(99)00033-4] [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: 11/20/2022]
Abstract
A series of O- and ring-alkylated derivatives of 4,5,6,7-tetrahydroisothiazolo[4,5-c]pyridin-3-ol was synthesized via treatment of appropriately substituted 4-benzylamino-1,2,5,6-tetrahydropyridine-3-carboxamides with hydrogen sulfide and subsequent ring closure by oxidation with bromine. The muscarinic receptor affinity as well as estimated relative efficacy and subtype selectivity of this series of bicyclic arecoline bioisosteres were determined using rat brain membranes and a number of tritiated muscarinic receptor ligands. The effects at the five cloned human muscarinic receptor subtypes of a selected series of chiral analogues, with established absolute stereochemistry, were studied using receptor selection and amplification technology (R-SAT). The potency, relative efficacy, and receptor subtype selectivity of these compounds were related to the structure of the O-substituents and the position and stereochemical orientation of the piperidine ring methyl substituents.
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Affiliation(s)
- H Pedersen
- Medicinal Chemistry Research, H. Lundbeck A/S, Valby-Copenhagen, Denmark
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41
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Meier E. Legislation to address privacy related to medical records. ONS News 1999; 14:7. [PMID: 10569064] [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: 02/14/2023]
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42
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Meier E. Political activities for rainy days. Nurs Econ 1999; 17:181-2. [PMID: 10711159] [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: 02/15/2023]
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43
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Meier E. [Biomechanics and implants. The 1998 annual meeting of the Swiss Society for Implantology (SGI), Biomechanics and Implants, of 10 June 1998 in Davos]. Schweiz Monatsschr Zahnmed 1999; 109:202-4. [PMID: 10200098] [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: 02/11/2023]
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44
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Meier E. Debate in Washington heats up regarding physician-assisted suicide, pain-management issues. ONS News 1999; 14:7. [PMID: 10578862] [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: 04/14/2023]
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45
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Meier E. Despite state tobacco settlements, unresolved issues remain. ONS News 1999; 14:10. [PMID: 10232259] [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: 02/12/2023]
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46
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Meier E. The tobacco settlement and 1999 forecasts. Nurs Econ 1999; 17:53-4. [PMID: 10335223] [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: 02/12/2023]
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47
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Meier E. Cleaner air and lungs may be in store for our children's future. Pediatr Nurs 1999; 25:90, 95. [PMID: 10335255] [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: 02/12/2023]
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48
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Meier E. Oncology nurses affect health policy each and every day. ONS News 1999; 14:11. [PMID: 10569062] [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: 02/14/2023]
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49
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Meier E. Legislators introduce bills that support cancer research. ONS News 1998; 13:16. [PMID: 10569056] [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: 02/14/2023]
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50
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Abstract
The capsid of canine parvovirus (CPV) was assayed for susceptibility to proteases and for structural variation. The natural cleavage of VP2 to VP3 in CPV full (DNA containing) particles recovered from tissue culture occurred within the sequence Arg-Asn-Glu-Arg Ala-Thr. Trypsin, chymotrypsin, bromelain, and cathepsin B all cleaved >90% of the VP2 to VP3 in full but not in empty capsids and did not digest the capsid further. Digestion with proteinase K, Pronase, papain, or subtilisin cleaved the VP2 to VP3 and also cleaved at additional internal sites, causing particle disintegration and protein degradation. Several partial digestion products produced by proteinase K or subtilisin were approximately 31-32.5 kDa, indicating cleavage within loop 3 of the capsid protein as well as other sites. Protease treatment of capsids at pH 5.5 or 7.5 did not significantly alter their susceptibility to digestion. The isoelectric point of CPV empty capsids was pH 5.3, and full capsids were 0.3 pH more acidic, but after proteolysis of VP2 to VP3, the pI of the full capsids became the same as that of the empty capsids. Antibodies against various capsid protein sequences showed the amino termini of most VP2 molecules were on the outside of full but not empty particles, that the VP1-unique sequence was internal, and that the capsid could be disintegrated by heat or urea treatment to expose the internal sequences. Capsids added to cells were localized within the cell cytoplasm in vesicles that appeared to be lysosomes. Microinjected capsids remained primarily in the cytoplasm, although a small proportion was observed to be in the nucleus after 2 h. After CPV capsids labeled with [35S]methionine were bound to cells at 0 degrees C and the cells warmed, little cleavage of VP1 or VP2 was observed even after prolonged incubation. Inoculation of cells with virus in the presence of proteinase inhibitors did not significantly reduce the infection.
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Affiliation(s)
- W S Weichert
- College of Veterinary Medicine, Cornell University, Ithaca, New York, 14853, USA
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