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Everaert K, Blackman A, Cayrol T, Gielen P, O'Sullivan K, van Breda E, Roussel N. Low Back Pain Perceptions and Coping Strategies in Pre-Professional Dancers: A Qualitative Study. Med Probl Perform Art 2023; 38:137-146. [PMID: 37659060 DOI: 10.21091/mppa.2023.3017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 04/11/2023] [Indexed: 09/05/2023]
Abstract
AIMS Low back pain (LBP) is a common health problem in pre-professional dancers which could hamper the dancers' professional career. However, pre-professional dancers are not often studied, although they may have their own pain perceptions and coping strategies towards LBP. Considering the biopsychosocial nature of LBP, it is important to increase the understanding of these perceptions and coping strategies. The aim of this qualitative research study was to explore the dancers' perceptions about LBP and their coping strategies when they suffered from LBP. METHODS Eighteen pre-professional dancers with and without LBP from different dance schools in Belgium were included in this study. Participants were invited for an in-depth online video interview. These in-depth interviews were based on a topic list. Afterwards, the interview transcripts were analyzed thematically. RESULTS Two primary themes emerged from the data: 1) perceptions of LBP and 2) coping strategies which dancers applied when they suffered from LBP. The perceptions about LBP were related to two different themes: "it's all about the body" and "it's all about the psychosocial and contextual factors." In addition, the coping strategies were divided into "active coping strategies" and "passive coping strategies," whereas the most popular coping strategies were stretching exercises and passive coping strategies such as massages or heating cream. CONCLUSION Although LBP has clearly been shown to be a biopsychosocial phenomenon, this qualitative study showed that dancers mainly considered biomedical factors as contributing factors to LBP. Additionally, instead of relying on coping strategies aimed at directly improving pain or trying to treat LBP on the basis of a single-cause diagnosis, it is important to consider the biopsychosocial origin of LBP in the management plans.
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Affiliation(s)
- K Everaert
- Kato Everaert, Faculty of Medicine and Health Sciences, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium.
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Lockwood P, Blackman A. Visual function assessment of diagnostic radiography students. Radiography (Lond) 2020; 26:e56-e65. [PMID: 32052772 DOI: 10.1016/j.radi.2019.10.012] [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: 07/06/2019] [Revised: 10/16/2019] [Accepted: 10/29/2019] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Deterioration of visual acuity (VA) and visual impairment has been linked to age-related subtle changes, gender, and a correlation to socioeconomic status. This study aimed to assess first-year diagnostic radiography students' visual functional abilities by applying the International Classification of Impairments, Disabilities and Handicaps (ICIDH) recommendations of functional VA screening and health-related quality of life questionnaire (HRQOL). METHODS The design followed the World Health Organisation (WHO) electronic VA testing of monocular sight using LogMAR charts and binocular vision using Snellen charts, and an HRQOL questionnaire assessing for reduced ability of visual-based tasks in activities of daily living (ADL). The data was evaluated in correlation to the participant's visual correction, age, gender, and socioeconomic background. RESULTS Seventy students were recruited, all meeting the WHO standard level for visual ability, with 100% (n = 70/70) met or achieved above normal binocular vision, correlating to expected normal population results from published studies for age. The monocular vision demonstrated 74% (n = 52/70) for the right eye, and 80% (n = 56/70) for the left eye for normal vision levels. The results did not differ significantly between each eye (p = 0.21), gender variations between the left eye (p = 0.27) and the right eye (p = 0.10) results were affected by sample ratio of females (80%; n = 56/70) to males (20%; n = 14/70), the visual correction did not impair binocular VA. The HRQOL assessment indicated no significant functional VA issues in the study sample. The study demonstrated no association between the participant's socioeconomic background that may influence their VA ability. CONCLUSION The results provided normative binocular and monocular data on visual function in a sample of student radiographers and indicated that their thresholds align to normal (or near-normal) VA standards. IMPLICATIONS FOR PRACTICE The visual health data was reviewed for subgroup comparison and trend analysis, and did not identify risk factors within this sample group that their VA and visual functioning would impact upon radiography clinical placement tasks and activities. The sample is not generalisable to the wider population; further studies are recommended.
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Affiliation(s)
- P Lockwood
- Medical and Clinical Sciences Research Hub, School of Allied & Public Health Professions, Canterbury Christ Church University, Kent, ME4 4UF, UK.
| | - A Blackman
- Medical and Clinical Sciences Research Hub, School of Allied & Public Health Professions, Canterbury Christ Church University, Kent, ME4 4UF, UK; The Association of British Dispensing Opticians College, Godmersham Park, Godmersham, Canterbury, Kent, CT4 7DT, UK
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Anvari S, Blackman A, Anagnostou A. P008 Anaphylaxis: closer to home? Ann Allergy Asthma Immunol 2017. [DOI: 10.1016/j.anai.2017.08.077] [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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Blackman A, Foster G, Zammit G, Rosenberg R, Aronne L, Wadden T, Claudius B, Jensen C, Mignot E. Liraglutide 3.0 mg reduces severity of obstructive sleep apnea and body weight in obese individuals with moderate or severe disease: scale sleep apnoea tria. Sleep Med 2015. [DOI: 10.1016/j.sleep.2015.02.058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Collier A, Blackman A, Foster G, Zammit G, Rosenberg R, Wadden T, Aronne L, Claudius B, Jensen T, Mignot E. S28 Liraglutide 3.0 Mg Reduces Severity Of Obstructive Sleep Apnoea And Body Weight In Obese Individuals With Moderate Or Severe Disease: Scale Sleep Apnoea Trial. Thorax 2014. [DOI: 10.1136/thoraxjnl-2014-206260.34] [Citation(s) in RCA: 5] [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: 11/04/2022]
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Seiwert TY, Fayette J, Cupissol D, Del Campo JM, Clement PM, Hitt R, Degardin M, Zhang W, Blackman A, Ehrnrooth E, Cohen EEW. A randomized, phase II study of afatinib versus cetuximab in metastatic or recurrent squamous cell carcinoma of the head and neck. Ann Oncol 2014; 25:1813-1820. [PMID: 24928832 PMCID: PMC4143093 DOI: 10.1093/annonc/mdu216] [Citation(s) in RCA: 134] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 06/01/2014] [Accepted: 06/04/2014] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Afatinib is an oral, irreversible ErbB family blocker that has shown activity in epidermal growth factor receptor (EGFR)-mutated lung cancer. We hypothesized that the agent would have greater antitumor activity compared with cetuximab in recurrent or metastatic (R/M) head and neck squamous cell carcinoma (HNSCC) patients, whose disease has progressed after platinum-containing therapy. PATIENTS AND METHODS An open-label, randomized, phase II trial was conducted in 43 centers; 124 patients were randomized (1 : 1) to either afatinib (50 mg/day) or cetuximab (250 mg/m(2)/week) until disease progression or intolerable adverse events (AEs) (stage I), with optional crossover (stage II). The primary end point was tumor shrinkage before crossover assessed by investigator (IR) and independent central review (ICR). RESULTS A total of 121 patients were treated (61 afatinib, 60 cetuximab) and 68 crossed over to stage II (32 and 36 respectively). In stage I, mean tumor shrinkage by IR/ICR was 10.4%/16.6% with afatinib and 5.4%/10.1% with cetuximab (P = 0.46/0.30). Objective response rate was 16.1%/8.1% with afatinib and 6.5%/9.7% with cetuximab (IR/ICR). Comparable disease control rates were observed with afatinib (50%) and cetuximab (56.5%) by IR; similar results were seen by ICR. Most common grade ≥3 drug-related AEs (DRAEs) were rash/acne (18% versus 8.3%), diarrhea (14.8% versus 0%), and stomatitis/mucositis (11.5% versus 0%) with afatinib and cetuximab, respectively. Patients with DRAEs leading to treatment discontinuation were 23% with afatinib and 5% with cetuximab. In stage II, disease control rate (IR/ICR) was 38.9%/33.3% with afatinib and 18.8%/18.8% with cetuximab. CONCLUSION Afatinib showed antitumor activity comparable to cetuximab in R/M HNSCC in this exploratory phase II trial, although more patients on afatinib discontinued treatment due to AEs. Sequential EGFR/ErbB treatment with afatinib and cetuximab provided sustained clinical benefit in patients after crossover, suggesting a lack of cross-resistance.
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Affiliation(s)
- T Y Seiwert
- Department of Medicine, University of Chicago Medical Centre, Chicago, USA.
| | - J Fayette
- Department of Medicine, Université de Lyon, Lyon
| | - D Cupissol
- Institut du Cancer de Montpellier Val d'Aurelle, Montpellier, France
| | - J M Del Campo
- Department of Medical Oncology, Hospital Universitario Vall d'Hebron, Barcelona, Spain
| | - P M Clement
- Division of Oncology, KU Leuven, Leuven, Belgium
| | - R Hitt
- Centro Integral Oncológico Clara Campal (CIOCC), Madrid, Spain
| | | | - W Zhang
- Boehringer Ingelheim Shanghai Pharmaceuticals Co., Ltd, Shanghai, China
| | - A Blackman
- Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, USA
| | - E Ehrnrooth
- Boehringer Ingelheim Danmark A/S, Copenhagen, Denmark
| | - E E W Cohen
- Department of Medicine, University of California San Diego Moores Cancer Center, La Jolla, USA
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van der Heijden YF, Maruri F, Blackman A, Holt E, Warkentin JV, Shepherd BE, Sterling TR. Fluoroquinolone exposure prior to tuberculosis diagnosis is associated with an increased risk of death. Int J Tuberc Lung Dis 2012; 16:1162-7. [PMID: 22794509 DOI: 10.5588/ijtld.12.0046] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
SETTING Fluoroquinolone (FQ) exposure before tuberculosis (TB) diagnosis is common, but its effect on outcomes, including mortality, is unclear. DESIGN Among TB patients reported to the Tennessee Department of Health from 2007 to 2009, we assessed FQ exposure within 6 months before TB diagnosis. The primary outcome was the combined endpoint of death at the time of TB diagnosis and during anti-tuberculosis treatment. RESULTS Among 609 TB cases, 214 (35%) received FQs within 6 months before TB diagnosis. A total of 71 (12%) persons died; 10 (2%) were dead at TB diagnosis and 61 (10%) died during anti-tuberculosis treatment. In multivariable logistic regression analysis, factors independently associated with death were older age (OR 1.05 per year, 95%CI 1.04-1.07), human immunodeficiency virus infection (OR 8.08, 95%CI 3.83-17.06), US birth (OR 3.03, 95%CI 1.03-9.09), and any FQ exposure before TB diagnosis (OR 1.82, 95%CI 1.05-3.15). Persons with FQ exposure before TB diagnosis were more likely to have culture- and smear-positive disease than unexposed persons. CONCLUSIONS Among this patient population, FQ exposure before TB diagnosis was associated with an increased risk of death. These findings underscore the need for cautious use of FQs in persons with possible TB.
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Affiliation(s)
- Y F van der Heijden
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, USA.
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Blackman A, May S, Devasia RA, Maruri F, Stratton C, Sterling TR. Microcolonies in fluoroquinolone agar proportion susceptibility testing of Mycobacterium tuberculosis: an indicator of drug resistance. Eur J Clin Microbiol Infect Dis 2012; 31:2177-82. [PMID: 22322359 DOI: 10.1007/s10096-012-1552-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2010] [Accepted: 02/20/2011] [Indexed: 11/25/2022]
Abstract
Microcolony growth of Mycobacterium tuberculosis on agar proportion susceptibility testing is neither well-defined nor previously reported with fluoroquinolone susceptibility testing. We describe here M. tuberculosis microcolony growth with fluoroquinolones, and assess its clinical significance. We screened 797 M. tuberculosis isolates for ofloxacin resistance (2.0 μg/mL) by agar proportion; 19 ofloxacin-resistant and 38 ofloxacin-susceptible isolates were selected for more detailed susceptibility testing with ofloxacin, ciprofloxacin, levofloxacin (all at 2.0 μg/mL) and moxifloxacin (0.5 μg/mL). The 57 isolates were also tested at two concentrations both above and below the critical concentrations. Microcolonies were defined as colonies 0.2-0.4 mm in diameter; confirmed microcolonies were present on repeat testing. Of the 57 isolates tested in detail, 7 grew microcolonies, of which 2 (0.3% of all isolates tested) had confirmed microcolonies on repeat testing (6 tests performed, and microcolonies were present on at least 4). Both M. tuberculosis isolates were ofloxacin-resistant on screening, and had ofloxacin minimum inhibitory concentration (MIC) >8 μg/mL. The five other isolates were ofloxacin-susceptible on screening, but had regular colony growth (i.e., resistance) at the drug concentration that initially resulted in microcolonies (ofloxacin 0.5 or 1.0 μg/mL). Microcolonies were observed infrequently with fluoroquinolone susceptibility testing, but when confirmed, they were associated with drug resistance.
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Affiliation(s)
- A Blackman
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University School of Medicine, A2209 Medical Center North, 1161 21st Avenue South, Nashville, TN 37232, USA
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Abstract
OBJECTIVE Actuarial analysis of stoma complications (problematic stomas) is lacking. The objectives of this audit were: to identify the incidence of stoma complications within the UK; to highlight any dissimilarity of incidence from centre to centre; to ascertain if the height of the stoma (distance of stoma lumen from the skin) at the time of fashioning is a predisposing factor to problems; and finally to initiate much needed research. METHOD Commencing 1st January 2005, stoma care services nationwide (256) were invited to audit prospectively their next 50 enteric stomas or for a period of 1 year which ever came first. The definition of a problematic stoma being one, which needed one or more accessories to keep the patient clean and dry for a minimum period of 24 h. The incident is to have happened within 3 weeks of surgery. Factors taken into account were: type of stoma, height of stoma within 48 h of surgery; emergency or elective procedure, problem identified, BMI, gender and underlying diagnosis of the patient. The identities of the participating centres are confidential. RESULTS Of the 256 hospital-based stoma care services within the UK, 93 (36%) participated. A total of 3970 stomas were recorded, of which 1329 (34%) were identified as problematic. Sixty-two centres reported 45-50 stomas with a range of complications 6-96%. The loop ileostomy was found to be the stoma which causes most problems. A stoma of <10 mm is a predisposing factor to complications and problems are more likely to occur following an emergency procedure. More men than women have stomas formed, but have significantly fewer problems and there is no significant difference between underlying diagnoses. CONCLUSION The stoma height, stoma type and gender of the patient are significant risk factors identified in this audit. The BMI of patient did not affect the outcome. Patients undergoing an emergency procedure are more likely to have a problematic stoma. The significant variation of complications from centre to centre indicates surgical technique as being the key factor in stoma formation and subsequent quality of life for the patient.
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Affiliation(s)
- J Cottam
- Clinical Nurse Specialist (Colorectal/Stoma Care), Bedford Hospital, NHS Trust, Kempston Road, Bedford MK42 9DJ, UK.
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Blackman A, Mazurek J. The cost of developing site-specific environmental regulations: evidence from EPA's project XL. Environ Manage 2001; 27:109-121. [PMID: 11083912 DOI: 10.1007/s002670010137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The flagship of the Environmental Protection Agency's regulatory reinvention initiative, Project XL has been touted as a regulatory blueprint for a site-specific, performance-based pollution-control system, but widespread complaints about the costs of the program beg the question of whether the costs of tailoring regulations to individual facilities are manageable. To address this question, this paper presents original survey data on a sample of 11 XL projects. We find that the fixed costs of putting in place XL agreements are substantial, averaging over $450,000 per firm. While stakeholder negotiations are widely cited as the principal source for these costs, we find that they actually arise mainly from interaction between participating facilities and the EPA. Moreover, EPA management problems are perceived by our survey respondents as having inflated project development costs. Finally, we find that the key factors that explains differences in costs across XL projects are the scope and complexity of the project proposal. These findings suggest that Project XL favors large firms that can afford to pay significant project development costs, that EPA management problems must be resolved to reduce costs, and that there may be a significant economic bias against complex and innovative proposals--precisely the type of proposals that Project XL was designed to foster in order to improve the efficiency of the regulatory system.
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Affiliation(s)
- A Blackman
- Quality of the Environment Division, Resources for the Future, 1616 P Street, NW, Washington, DC 20036, USA
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Blackman A. Cradles of contention. Time 1999; 154:46. [PMID: 10557651] [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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Ichise M, Golan H, Ballinger JR, Vines D, Blackman A, Moldofsky H. Regional differences in technetium-99m-ECD clearance on brain SPECT in healthy subjects. J Nucl Med 1997; 38:1253-60. [PMID: 9255160] [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: 02/05/2023] Open
Abstract
UNLABELLED The aim of this study was to evaluate the in vivo stability of ECD brain SPECT. METHODS Twenty normal volunteers (35.4 +/- 9.1 yr) each had six ECD scans at 30, 60, 120, 240, 360 and 480 min postinjection. Each scan was acquired for 24 min using a triple-head SPECT system. Average counts per pixel were measured from frontal, temporal, parietal, occipital, cerebellum, basal ganglia, thalamus and white matter regions. ECD clearance rates were calculated by fitting regional time activity data to a monoexponential equation. Regional gray-to-white matter (G/W) and gray-to-cerebellum (G/C) ratios were calculated for each scan. Analysis of variance was used to compare regional ECD clearance and ratio measurements. RESULTS The average ECD clearance was 4.3%/hr. There was a significant regional variation in the ECD clearance, being higher for occipital (6.34%/hr) but lower for both white matter (2.39%/hr) and thalamus (2.45%/hr). Both G/W and G/C ratios showed a significant regional variation with time. The overall G/W ratio was 2.13 at 30 min and became progressively lower after 2 hr, reaching 1.78 at 8 hr. All regional G/W ratios declined with time except for thalamus where it remained constant at 2.15. The overall G/C ratio was 0.984 at 30 min but it declined after 4 hr, reaching 0.955 at 8 hr. All regional G/C ratios declined with time except for thalamus where it increased progressively from 0.955 to 1.120 at 8 hr. CONCLUSION ECD clears from normal brain slowly and shows a significant regional variation. As a result, G/W contrast begins to decrease after 2 hr and the gray-matter activity pattern becomes significantly different after 4 hr. Therefore, the optimal imaging time may be between 30-120 min. However, images obtained up to 4 hr still maintain the initial gray-matter activity pattern.
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Affiliation(s)
- M Ichise
- Department of Nuclear Medicine, Mount Sinai Hospital, Toronto, Ontario, Canada
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Howarth A, Braddock D, Blackman A, Breuner J, Beck D. Using Medicaid fee-for-service data to develop community health center policy. Manag Care Q 1995; 3:91-8. [PMID: 10144139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
Abstract
This article presents an analysis of fee-for-service Medicaid data for King County, Washington. This analysis was conducted using Department of Social and Health Services billing records for patients of the community health centers of Seattle-King County (14 primary care sites), the Seattle-King County Department of Public Health (9 primary care sites), and Harborview Medical Center (a large tertiary facility with a primary care outpatient clinic associated with the University of Washington) from January through June, 1992. The complete billing records of all patients who utilized any one of the 24 sites were made available. These records were used to review utilization patterns and patient costs. The implications for community health centers regarding Medicaid managed care, health care reform, and population-based management are discussed.
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Affiliation(s)
- A Howarth
- King County Medical Blue Shield, Seattle, WA, USA
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Abstract
In the present study, we investigated the ability of NMDA receptor antagonists to inhibit catalepsy induced by haloperidol, or SCH23390 and clebopride, selective dopamine D1 and D2 receptor antagonists respectively. Catalepsy was measured by recording the time the animal remained with its forepaws placed over a rod 6 cm above the bench. Pretreatment with either the non-competitive NMDA receptor antagonist, MK-801 (0.25-0.5 mg/kg i.p.) or the competitive antagonist, LY274614 (10-20 mg/kg i.p.) reduced the cataleptic response produced by haloperidol (10 mg/kg), SCH23390 (2.5-10 mg/kp i.p.) or clebopride (5-20 mg/kg i.p.). This demonstrates that NMDA receptor antagonists will reduce both dopamine D1 and D2 receptor antagonist-induced catalepsy. Muscle relaxant doses of chlordiazepoxide (10 mg/kg i.p.) failed to reduce the catalepsy induced by haloperidol, suggesting that the anticataleptic effect of the NMDA receptor antagonists was not due to a non-specific action. These results support the hypothesis that NMDA receptor antagonists may have beneficial effects in disorders involving reduced dopaminergic function, such as Parkinson's disease.
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Affiliation(s)
- N A Moore
- Lilly Research Centre, Eli Lilly and Co., Windlesham, Surrey, UK
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Manshadi M, Lippmann S, O'Daniel RG, Blackman A. Alcohol abuse and attention deficit disorder. J Clin Psychiatry 1983; 44:379-80. [PMID: 6643399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The prevalence of alcohol abuse among the fathers, and ADD in family members, of 22 adult psychiatric patients with persistent attention deficit disorder was found to be significantly higher than in 20 matched controls. Further research is necessary to determine the reasons for, and clinical implications of, these associations.
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Giorgini GL, Hollinger FB, Leduc L, Issarescu S, George J, Blackman A, Thayer WR. Radioimmunoassay detection of hepatitis type B antigen. A prospective study in blood donors and recipients. JAMA 1972; 222:1514-8. [PMID: 4629325] [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: 01/11/2023]
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Abstract
Two cores from the eastern Pacific were analyzed faunally and dated by the ionium: thorium method. Comparison of the results of these and of similar studies of Atlantic cores indicate that faunal changes, representing changes between the glacial and interglacial stages of the Pleistocene, occurred in both oceans simultaneously.
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