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Boas J, Worm-Petersen J, Dupont E, Mikkelsen B, Wermuth L. The levodopa dose-sparing capacity of pergolide compared with that of bromocriptine in an open-label, crossover study. Eur J Neurol 2011. [DOI: 10.1111/j.1468-1331.1996.tb00188.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Mogensen PH, Jórgensen L, Boas J, Dam M, Vesterager A, Flesch G, Jensen PK. Effects of dextropropoxyphene on the steady-state kinetics of oxcarbazepine and its metabolites. Acta Neurol Scand 2009. [DOI: 10.1111/j.1600-0404.1992.tb03989.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Reichmann H, Boas J, Macmahon D, Myllyla V, Hakala A, Reinikainen K. Efficacy of combining levodopa with entacapone on quality of life and activities of daily living in patients experiencing wearing-off type fluctuations. Acta Neurol Scand 2005; 111:21-8. [PMID: 15595934 DOI: 10.1111/j.1600-0404.2004.00363.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [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: 10/26/2022]
Abstract
OBJECTIVES To compare the efficacy of levodopa/dopa decarboxylase inhibitor (DDCI) plus entacapone with levodopa/DDCI plus placebo on measures of parkinsonian disability and health-related quality of life (QoL) in subjects with Parkinson's disease (PD) experiencing motor fluctuations. MATERIALS AND METHODS A double-blind, placebo-controlled phase IV study was performed in 270 PD patients randomized to receive either entacapone 200 mg or placebo with each dose of their current levodopa regimen. The primary variables were the Unified Parkinson's Disease Rating Scale (UPDRS) part II activities of daily living (ADL) and the Parkinson's Disease Questionnaire (PDQ)-39 summary index. UPDRS parts I, III-VI, Global Assessment of Change, PDQ-39 subscores, and the Short-Form (SF)-36 and the European Quality of Life five-dimension questionnaire (EQ-5D) were included as secondary variables. RESULTS There was a significant improvement in ADL scores with levodopa/DDCI/entacapone compared with levodopa/DDCI/placebo at 5 and 13 weeks (-2.3 vs -0.7, respectively; P = 0.0001). However, no significant differences were observed between treatments using the PDQ-39 summary index. UPDRS part III (motor) scores significantly decreased in the levodopa/DDCI/entacapone group compared with the levodopa/DDCI/placebo group (-5.0 vs -2.9, respectively; P = 0.03). Similarly, the change in the investigators Global Assessment was significantly greater (P = 0.004) in the levodopa/DDCI/entacapone group. There were no significant differences between treatments for any of the PDQ-39 subscores, the SF-36 variables or the EQ-5D utility score. CONCLUSIONS Levodopa combined with entacapone demonstrated good efficacy in terms of ADL, global function, motor performance and was well tolerated. However, this short-term study did not generate significant improvements in QoL.
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Affiliation(s)
- H Reichmann
- Department of Neurology, Medical Faculty of the Technical University, Dresden, Germany.
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Sabers A, Dam M, A-Rogvi-Hansen B, Boas J, Sidenius P, Laue Friis M, Alving J, Dahl M, Ankerhus J, Mouritzen Dam A. Epilepsy and pregnancy: lamotrigine as main drug used. Acta Neurol Scand 2004; 109:9-13. [PMID: 14653845 DOI: 10.1034/j.1600-0404.2003.00200.x] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVES To study the risk of teratogenicity in infants of women with epilepsy. MATERIAL AND METHODS Prospective data from 1996 to 2000 comprised 147 pregnancies. The most frequent antiepileptic drugs (AEDs) used were lamotrigine (LTG) 35% (n = 51), oxcarbazepine (OXC) 25% (n = 37) and valproate (VPA) 20% (n = 30). Seventy-four per cent (n = 109) received monotherapy. Folic acid supplementation was taken during first trimester by 118 patients (80%). RESULTS The overall risk of malformations among newborns in the AED-exposed group was 3.1% (n = 4). Two children were born with multiple malformations (VPA monotherapy), two children had ventricular septal defects (one OXC monotherapy, and one OXC and LTG). The risk of malformations was 2.0% in women treated with LTG and 6.7% in women treated with VPA (NS). CONCLUSION Despite the small number of cases in the study these data indicate that treatment with LTG during pregnancy might be relatively safe. Larger prospective studies are needed to obtain adequate power for statistical analysis.
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Affiliation(s)
- A Sabers
- Danish Epilepsy Hospital, Dianalund, Denmark.
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Larsen JP, Boas J, Erdal JE. Does selegiline modify the progression of early Parkinson's disease? Results from a five-year study. The Norwegian-Danish Study Group. Eur J Neurol 1999; 6:539-47. [PMID: 10457386 DOI: 10.1046/j.1468-1331.1999.650539.x] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.4] [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: 11/20/2022]
Abstract
The objective of this study was to examine the effect of long-term treatment with selegiline on the progression of Parkinson's disease (PD). One hundred and sixty-three patients with early PD were treated with levodopa and benserazide, combined with selegiline or placebo in a five-year randomized, placebo-controlled, double-blind, parallel group study followed by a one-month wash-out of selegiline or placebo. The main outcome measures were assessments of the severity of parkinsonism, levodopa requirements and the development of end-of-dose motor fluctuations over time and after wash-out at the end of the study period. Results indicated that patients treated with the combination of selegiline and levodopa developed markedly less severe parkinsonism and required lower doses of levodopa during the five-year study period than patients treated with levodopa and placebo. There was no trend towards worsening during wash-out among patients previously treated with selegiline. The results cannot easily be explained by a symptomatic effect of selegiline.
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Affiliation(s)
- J P Larsen
- Department of Neurology, Central Hospital of Rogaland, Stavanger, Norway
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Larsen JP, Boas J. The effects of early selegiline therapy on long-term levodopa treatment and parkinsonian disability: an interim analysis of a Norwegian--Danish 5-year study. Norwegian-Danish Study Group. Mov Disord 1997; 12:175-82. [PMID: 9087975 DOI: 10.1002/mds.870120207] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
In this study, we investigated the effects of selegiline on levodopa treatment and parkinsonian disability over several years of treatment in patients with early Parkinson's disease (PD). The 163 patients were randomized to receive either selegiline or placebo in addition to levodopa in a double-blind, parallel-group study design, and the patients were to be followed up until a defined termination point or for 5 years. All patients had previously either never (two thirds) or for < 6 months (one third) received levodopa. After 1 year of treatment or at withdrawal from study or both, the patients were divided according to specified diagnostic criteria into groups of definite, probable, possible, or unlikely PD. The efficacy parameters were levodopa therapy, Unified Parkinson's Disease Rating Scale (UPDRS) with subscales, and the time to develop wearing-off fluctuations or reaching the termination point. Evaluation of efficacy was performed for all patients with PD and for patients with a definite and probable disease. The results of this study are based on an interim analysis when 80% of the 163 randomized patients had been followed up for > or = 3 years. Nine patients were excluded from the study because of protocol violations or because the patients were diagnosed as unlikely PD. At the time of interim analysis, 39 patients had been withdrawn from the study because of adverse effects or their own wish. Eighteen patients had reached the termination point, and 97 patients (observation time, 30-54 months) were still in the study. Among the patients receiving selegiline, we found a rather stable daily levodopa dose during 54 months of therapy, compared with an anticipated increase among patients with levodopa monotherapy. Concurrently, patients in the selegiline group showed a trend to develop less severe parkinsonian disability and a lower frequency of motor fluctuations and need for additional antiparkinsonian medication. The results of this study indicate that early combination therapy of selegiline and levodopa compared with levodopa monotherapy has an increasingly favorable impact on the long-term daily levodopa dose and may possibly delay the development of disability in PD.
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Affiliation(s)
- J P Larsen
- Department of Neurology, Central Hospital of Rogaland, Stavanger, Norway
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Abstract
The antiepileptic effect of lamotrigine (Lamictal) was assessed in a double-blind, placebo-controlled, crossover trial in 56 adult patients with refractory partial seizures. Lamotrigine or placebo was added to the patients' existing antiepileptic drugs (AEDs). The dose of lamotrigine varied from 75 to 400 mg daily. Thirty-eight patients completed the trial and 7 withdrew because of adverse experiences. There was a statistically significant reduction in seizure counts on lamotrigine compared with placebo for total seizures (30.3% reduction, 95% CI 8.4%, 47.0%), complex partial seizures (29.2% reduction, 95% CI 3.8%, 47.9%) and secondary generalised seizures (37.9%, CI 18.9%, 52.4%). The analysis of total seizure days showed a similar significant reduction during lamotrigine treatment for the same seizure categories. There was no statistically significant difference in reporting of adverse events between lamotrigine and placebo except for dizziness which was reported more frequently on lamotrigine than on placebo. There were no differences in abnormal haematological or biochemical findings between lamotrigine and placebo, and lamotrigine had no effect on plasma concentrations of concomitant AEDs.
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Affiliation(s)
- J Boas
- Glostrup Hospital, Copenhagen, Denmark
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Dupont E, Andersen A, Boas J, Boisen E, Borgmann R, Helgetveit AC, Kjaer MO, Kristensen TN, Mikkelsen B, Pakkenberg H, Presthus J, Stien R, Worm-Petersen J, Buch D. Sustained-release Madopar HBS compared with standard Madopar in the long-term treatment of de novo parkinsonian patients. Acta Neurol Scand 1996; 93:14-20. [PMID: 8825266 DOI: 10.1111/j.1600-0404.1996.tb00163.x] [Citation(s) in RCA: 68] [Impact Index Per Article: 2.4] [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: 02/02/2023]
Abstract
In this Danish-Norwegian randomized double-blind parallel-group multicentre study, we compared the therapeutic response of slow-release Madopar HBS to standard Madopar in 134 de novo patients with idiopathic Parkinson's disease during a 5-year period. The drugs were dosed according to the individual need of the patients. The Webster, NUDS, UPDRS and Hoehn & Yahr scales were used for evaluation of symptoms. Addition of a morning dose of standard Madopar 62.5 mg was allowed after 6 months. Bromocriptine could be administered but not Selegiline. Sixty-five patients got Madopar HBS and 69 standard Madopar. Surprisingly, no differences were found as to the mean daily levodopa dose, the mean number of daily doses or the use of the doses of bromocriptine. Unexpectedly, we found a trend towards a more frequent use of a morning dose of standard Madopar in the group treated with the standard formulation. No differences were observed in the occurrence of motor fluctuations or dyskinesia, the incidence of which was relatively low. Sustained-release Madopar (HBS) thus proved to be as effective as standard Madopar in the long-term treatment of de novo parkinsonian patients, but the drug showed no advantage in postponing or reducing the long-term levodopa treatment problems.
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Affiliation(s)
- E Dupont
- Department of Neurology, Arhus University Hospital, Denmark
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9
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Boas J. [A new antiparkinson agent. Pergolide]. Ugeskr Laeger 1994; 156:6563-5. [PMID: 7825262] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- J Boas
- Neurologisk afdeling, Amtssygehuset i Glostrup
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Friis ML, Kristensen O, Boas J, Dalby M, Deth SH, Gram L, Mikkelsen M, Pedersen B, Sabers A, Worm-Petersen J. Therapeutic experiences with 947 epileptic out-patients in oxcarbazepine treatment. Acta Neurol Scand 1993; 87:224-7. [PMID: 8475694 DOI: 10.1111/j.1600-0404.1993.tb04106.x] [Citation(s) in RCA: 142] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Efficacy and tolerability of the new antiepileptic drug oxcarbazepine, was evaluated in a retrospective multicentre study. The records of all 947 epilepsy patients treated with oxcarbazepine in the eight participating centres from 1981 through 1990 were examined. The median daily dose of oxcarbazepine was 30 mg/kg in children, 18 mg/kg in adults, and 15 mg/kg in elderly patients, given b.i.d. or t.i.d. The mean plasma levels of the main active metabolite of oxcarbazepine was 88, 79, and 68 mumol/l in children, adults, and elderly, respectively. In patients shifted to oxcarbazepine treatment, seizure frequency was unchanged in 51-66%, 32-48% had a decrease, and 1-10% an increase in seizure frequency, considering the individual seizure types separately. Adverse events were reported in one third of patients, most frequently affecting the CNS (dizziness: 6%; sedation: 6%; fatigue: 6%). Rash was reported in 6% of patients, half of these patients had previously had an allergic reaction to carbamazepine. Hyponatremia was found in about a quarter of the patients from whom data were available. No congenital malformations were seen in nine live-born, first trimester oxcarbazepine-exposed children.
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Affiliation(s)
- M L Friis
- Department of Neurology, Odense University Hospital, University of Copenhagen, Denmark
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11
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Oturai PS, Holländer NH, Hansen OP, Boas J, Bruun BG, Frimodt-Møller N, Dombernowsky P, Hansen HH. Ceftriaxone versus latamoxef in febrile neutropenic patients: empirical monotherapy in patients with solid tumours. Eur J Cancer 1993; 29A:1274-9. [PMID: 8343267 DOI: 10.1016/0959-8049(93)90072-n] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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: 01/30/2023]
Abstract
121 patients with 132 febrile episodes were randomised to ceftriaxone or latamoxef monotherapy in order to compare antibiotic efficacy in neutropenic patients treated with cytotoxic chemotherapy for solid tumours. In 80 evaluable episodes no significant differences were observed between the two groups with respect to efficacy and fatal failure rates. Of episodes treated with ceftriaxone, 67% showed a favourable clinical response vs. 61% in the latamoxef group. The clinical response rates in episodes with documented bacterial infections were 67 and 56% in the two treatment groups. In 18% of the episodes with documented initial infections the patients died of presumably uncontrolled infection. The convenient once daily dosage schedule combined with fewer severe adverse reactions favours the use of ceftriaxone instead of latamoxef. Although a relative high degree of response was seen, empirical antibiotic monotherapy apparently does not offer a sufficient antibacterial cover in infections in this type of patient with defective host immunity.
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Affiliation(s)
- P S Oturai
- Steno Diabetes Center, Niels, Gentofte, Denmark
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12
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Abstract
The objective response rates were determined using teniposide as first-line chemotherapy for patients with recurrent breast cancer. Twenty-seven evaluable patients with advanced disease received teniposide 70 mg/m2 i.v. days 1-5 every 3 weeks. A total of 211 courses were given. Responses included one complete (4%) and 9 partial responses (33%) with a median duration of response of 9 months (range 2-31 months). The main toxicity was myelosuppression. The results show that teniposide has at least modest activity in patients with advanced breast cancer treated previously with endocrine therapy.
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Affiliation(s)
- D Nielsen
- Department of Oncology, Herlev Hospital, University of Copenhagen, Denmark
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13
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Mogensen PH, Jórgensen L, Boas J, Dam M, Vesterager A, Flesch G, Jensen PK. Effects of dextropropoxyphene on the steady-state kinetics of oxcarbazepine and its metabolites. Acta Neurol Scand 1992; 85:14-7. [PMID: 1546529] [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: 12/27/2022]
Abstract
The effects of dextropropoxyphene on the steady-state kinetics of oxcarbazepine and its metabolites were investigated in eight patients with epilepsy or trigeminal neuralgia. One patient dropped out of the study, presumably due to side-effects of dextropropoxyphene. Dextropropoxyphene did not affect the plasma levels of the principal active metabolite, 10,11-dihydro-10-hydroxy-carbamazepine. Since dextropropoxyphene is known to increase the plasma levels of carbamazepine, leading to toxicity, the findings of this study suggest that oxcarbazepine is a useful alternative to carbamazepine when concomitant dextropropoxyphene therapy is required.
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Affiliation(s)
- P H Mogensen
- University Neurology Clinic, Hvidovre Hospital, Denmark
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14
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Abstract
In a phase II study, 19 patients with previously treated, advanced breast cancer received 50 mg/m2 teniposide (VM-26) i.v. on days 1-5 every 3 weeks. One partial response (PR) (5%) was observed. Toxicity consisting of leukopenia and thrombocytopenia was frequent and severe. VM-26 has minimal therapeutic activity when given at this dose and on this schedule to patients with heavily pretreated metastatic breast cancer.
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Affiliation(s)
- J Boas
- Department of Oncology, Herlev Hospital, University of Copenhagen, Denmark
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15
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Abstract
Stroke incidence in Copenhagen, Denmark was recorded in a random population sample of 19,327 persons invited for two health examinations with 5 years' interval from 1976 to 1983. Stroke incidence increased exponentially with age. After adjustment to the age and sex distribution of the Danish population in 1980, the estimated incidence of first stroke was 1.41/1000 women and 2.48/1000 men; the total incidence was 1.94/1000 population. Risk factor analysis was based on the initial examination of 13,088 persons greater than 35 years old without previous stroke who responded to the first invitation, in whom 295 first strokes were subsequently observed. We used the regression model of Cox. However, our use of this model differs from the somewhat automatic procedures normally used to develop prognostic models. Evaluation of the causative effect of a particular risk factor requires that the direction of mutual influences between the factor in question and other risk factors is established/postulated. Among the 16 potential risk factors for stroke we examined, significant effects were found for age, sex, household income, smoking habits, systolic blood pressure, diabetes, plasma cholesterol concentration, ischemic heart disease, and atrial fibrillation. No significant effect could be demonstrated for a positive family history of stroke, years of school education, marital status, alcohol consumption, daily use of tranquilizers, body mass index, or postmenopausal hormone treatment.
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Affiliation(s)
- G Boysen
- Department of Neurology, Rigshospitalet, Copenhagen, Denmark
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Abstract
The effect of very-low-dose aspirin as an antithrombotic agent was evaluated blindly in 301 patients who had recently undergone carotid endarterectomy. After randomization, 150 patients received aspirin and 151 received placebo. The two groups were comparable with regard to age, sex, blood pressure, previous cerebrovascular events, and smoking habits. The effect of the study medication on platelet aggregation was measured twice in each patient during the first 2 months and at each follow-up visit; the dose was individually adjusted. In 76% of the patients receiving aspirin, 50 mg/day gave satisfactory platelet inhibition, 13% needed 60 mg/day, 8% needed 70 mg/day, and 3% needed 100 mg/day. Platelet aggregation was found to be inhibited in only 1.2% of the measurements in the patients receiving placebo. Observation during treatment averaged 21 months; total intention-to-treat follow-up averaged 25 months. For the combined outcome events of transient ischemic attack, stroke, acute myocardial infarction, and vascular death, aspirin reduced risk by 11% (95% confidence limits: -38% to 48%, p greater than 0.1). Thus, there was no significant effect of very-low-dose aspirin in our trial.
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Affiliation(s)
- G Boysen
- Department of Neurology, Rigshospitalet, Copenhagen, Denmark
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Henriksen L, Boas J. Regional cerebral blood flow in hemiparkinsonian patients. Emission computerized tomography of inhaled 133Xenon before and after levodopa. Acta Neurol Scand 1985; 71:257-66. [PMID: 3873779 DOI: 10.1111/j.1600-0404.1985.tb03198.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Regional and mean cerebral blood flow (rCBF, CBF) were measured by tomography of inhaled 133Xe in 18 hemiparkinsonian patients before and after levodopa (L-dopa). Baseline mean CBF was 55 ml/ (100 g X min) after an L-dopa-free interval of at least 10 h (range 10-13) and remained unchanged at 56.1 ml/ (100 g X min) after optimal clinical improvement was achieved by L-dopa. However, L-dopa reduced rCBF significantly (P less than 0.05) in the striatum contralateral to the symptomatic limbs. In patients with adverse reactions such as hyperkinesias and on/off symptoms, flow tended to increase bilaterally in striatum and often markedly in midline structures anatomically related to globus pallidus and thalamus. Compared with a normal population, the subcortical rCBF distribution was asymmetrical with a reduced flow (-18%) in the striatum contralateral to the symptomatic limbs and in midline structures anatomically related to globus pallidus and thalamus (-12%). Cortical CBF was inverse related to the duration of Parkinson's disease (P less than 0.05), probably reflecting an increasing mental deterioration with time.
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Abstract
From a total of 869 patients primarily operated on for bronchogenic carcinoma, nine underwent a second operation for recurrence of the tumour. The median interval between the operations was 16 months. In four patients the second operation consisted of resection of ipsilateral residual lung after primary segmental resection or lobectomy. One patient underwent contralateral pneumonectomy after primary segmental resection. In the four remaining cases a contralateral lobectomy or segmental resection was performed after primary lobectomy. Four of the nine patients are still alive but, after a short observation time, only two are tumour-free. On the basis of these findings we cannot recommend reoperation for bronchogenic carcinoma, except in very rare, individually selected cases.
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Lidegaard O, Boas J, Philip P. [Primary involvement of the central nervous system in acute leukemia]. Ugeskr Laeger 1983; 145:3580-3581. [PMID: 6649145] [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] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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Baldas J, Boas J, Bonnyman J, Mackay MF, Williams GA. Structural studies of technetium complexes. III. The crystal structure of Tris[2-aminobenzenethiolato(2 - )-S, N]technetium(VI) : a trigonal-prismatictechnetium geometry. Aust J Chem 1982. [DOI: 10.1071/ch9822413] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Tris[2-aminobenzenethiolato(2–)-S,N]technetium(VI), Tc(NHC6H4S)3,
has been prepared by the reaction of ammonium pertechnetate
with 2-aminobenzenethiol in 0.1 M hydrochloric acid solution at room
temperature. The crystal structure of Tc(NHC6H4S)3
has been determined by single-crystal X-ray diffraction methods at 17�C.
Crystals are orthorhombic, space group P212121,
with a 10.696(2), b 11.363(1), c l5.220(2) �, and Z 4. Automatic diffractometry
has provided significant Bragg intensities for 1413 independent reflections,
and the structure of the correct enantiomorph has
been refined by full-matrix least-squares methods to R 0.044. The compound,
which is isostructural with the molybdenum analogue,
consists of discrete molecules of Tc(NHC6H4S)3.
The environment about the technetium atom closely approximates a trigonal-prismatic geometry. This is the first example
where this geometry has been established with technetium. Differences in detail
between the structures of TC(NHC6H4S)3 and its
molybdenum analogue are discussed. In particular the S3N3
coordination polyhedron in TC(NHC6H4S)3is
contracted and the distortions from ideal trigonal-prismatic
geometry are less than in the molybdenum analogue.
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21
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Boas J, Hertoft P, Hoffmeyer H, Jacobsen M, Zahle I, Ostergaard A, Aarkrog T. [The development of adolescent psychiatry in Denmark]. Ugeskr Laeger 1971; 133:1274-91. [PMID: 5561969] [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] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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23
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Boas J. Die Gründung der Berliner medizinischen Gesellschaft. Dtsch Med Wochenschr 1915. [DOI: 10.1055/s-0029-1201187] [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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24
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Boas J. Erwiderung zu der obigen Bemerkung. Dtsch Med Wochenschr 1908. [DOI: 10.1055/s-0029-1186330] [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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25
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Boas J. Ueber das Vorkommen von Schwefelwasserstoff im Magen 1). Dtsch Med Wochenschr 1892. [DOI: 10.1055/s-0029-1199567] [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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26
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Boas J. Ueber periodische Neurosen des Magens. Dtsch Med Wochenschr 1889. [DOI: 10.1055/s-0029-1198737] [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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Boas J. Ueber das Tropaeolinpapier als Reagens auf freie Salzsäure im Mageninhalt. Dtsch Med Wochenschr 1887. [DOI: 10.1055/s-0029-1197973] [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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28
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Boas J. Ueber den heutigen Stand der Diagnostik und Therapie der Magenkrankheiten. I. Diagnostik der Magenkrankheiten. Dtsch Med Wochenschr 1887. [DOI: 10.1055/s-0029-1197769] [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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Boas J. Ueber den heutigen Stand der Diagnostik und Therapie der Magenkrankheiten. II. Pathologie der Magenkrankheiten (Fortsetzung aus No. 24.). Dtsch Med Wochenschr 1887. [DOI: 10.1055/s-0029-1197787] [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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Boas J. Ueber den heutigen Stand der Diagnostik und Therapie der Magenkrankheiten. III. Die Therapie der Magenkrankheiten (Schluss aus No. 25.). Dtsch Med Wochenschr 1887. [DOI: 10.1055/s-0029-1197805] [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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