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Vlase L Popa A Neag M Muntean D Achim M Leucuţa SE 《Clinical and experimental pharmacology & physiology》2012,39(1):9-12
1. Our objective was to evaluate a possible pharmacokinetic interaction between zolpidem and fluvoxamine in healthy volunteers. 2. The study consisted of two periods: Period 1 (reference), when each volunteer received a single dose of 5 mg zolpidem; and Period 2 (test), when each volunteer received a single dose of 5 mg zolpidem and 100 mg fluvoxamine. Between the two periods, the subjects were treated for 6 days with a single daily dose of 100 mg fluvoxamine. 3. Pharmacokinetic parameters of zolpidem given in each treatment period were calculated using non-compartmental analysis and the data from two periods were compared to determine statistically significant differences. 4. In the two periods of treatments, the mean peak plasma concentrations (C(max)) were 56.4 ± 25.6 ng/mL (zolpidem alone) and 67.3 ± 25.8 ng/mL (zolpidem after pretreatment with fluvoxamine). The t(max), times taken to reach C(max), were 0.83 ± 0.44 and 1.26 ± 0.74 h, respectively, and the total areas under the curve (AUC(0-∞)) were 200.9 ± 116.8 and 512.0 ± 354.6 ng h/mL, respectively. The half-life of zolpidem was 2.24 ± 0.81 h when given alone and 4.99 ± 2.92 h after pretreatment with fluvoxamine. 5. Fluvoxamine interacts with zolpidem in healthy volunteers and increases its exposure by approximately 150%. The experimental data showed the pharmacokinetic interaction between zolpidem and fluvoxamine, and suggest that the observed interaction might be clinically significant, but its relevance has to be confirmed. 相似文献
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Catecholamine urinary excretion under basal conditions and after head down tilting (4°) was studied in normo- and hypertensive controls and in patients with hemisphere and brainstem infarction, respectively. Both the normo- and hypertensive controls and patients with hemisphere infarction displayed a conspicuous decrease (about 40%) in noradrenaline (NA) urinary excretion after head down tilting. In contrast the patients with brainstem infarction increased NA urinary excretion after the manoeuvre, suggesting activation instead of deactivation of the sympathetic nervous system (SNS).In normo- and hypertensive controls the values of night NA excretion were lower than those of day NA excretion, whereas in brainstem infarct patients the night NA excretion was close to the day NA excretion. This finding also supports the view that the brainstem infarct patients are not able to deactivate their SNS during night recumbency.The SNS reactivity disorder of such patients if associated with impairment of autoregulation of cerebral circulation might generate an abnormal increase in cerebral circulation during night recumbency. 相似文献
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The occurrence of multiple protein kinases, distinguished with respect to molecular weight and preference for acceptor proteins, was demonstrated in Ascaridia galli. The molecular weights of the cyclic AMP-dependent protein kinase and of phosvitin kinase I and II — both independent of cyclic AMP — were determined to be 160 000, > 200 000 and 40 000, respectively. The cyclic AMP-dependent protein kinase preferred histones and kemptide as acceptor substrates; stimulation of enzyme activity was up to 4-fold by cyclic AMP. The activities of phosvitin kinase I and II were found to be effectively inhibited by suramin. The inhibition constants were calculated to be 2 μM and 5 μM, respectively. In addition, stibophen turned out to be a potent inhibitor of phosvitin kinase I; the inhibition constant was determined to be 10 μM. 相似文献
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Daikeler T Labopin M Di Gioia M Abinun M Alexander T Miniati I Gualandi F Fassas A Martin T Schwarze CP Wulffraat N Buch M Sampol A Carreras E Dubois B Gruhn B Güngör T Pohlreich D Schuerwegh A Snarski E Snowden J Veys P Fasth A Lenhoff S Messina C Voswinkel J Badoglio M Henes J Launay D Tyndall A Gluckman E Farge D;EBMT Autoimmune Disease Working Party 《Blood》2011,118(6):1693-1698
To specify the incidence and risk factors for secondary autoimmune diseases (ADs) after HSCT for a primary AD, we retrospectively analyzed AD patients treated by HSCT reported to EBMT from 1995 to 2009 with at least 1 secondary AD (cases) and those without (controls). After autologous HSCT, 29 of 347 patients developed at least 1 secondary AD within 21.9 (0.6-49) months and after allogeneic HSCT, 3 of 16 patients. The observed secondary ADs included: autoimmune hemolytic anemia (n = 3), acquired hemophilia (n = 3), autoimmune thrombocytopenia (n = 3), antiphospholipid syndrome (n = 2), thyroiditis (n = 12), blocking thyroid-stimulating hormone receptor antibody (n = 1), Graves disease (n = 2), myasthenia gravis (n = 1), rheumatoid arthritis (n = 2), sarcoidosis (n = 2), vasculitis (n = 1), psoriasis (n = 1), and psoriatic arthritis (n = 1). After autologous HSCT for primary AD, the cumulative incidence of secondary AD was 9.8% ± 2% at 5 years. Lupus erythematosus as primary AD, and antithymocyte globulin use plus CD34(+) graft selection were important risk factors for secondary AD by multivariate analysis. With a median follow-up of 6.2 (0.54-11) years after autologous HSCT, 26 of 29 patients with secondary AD were alive, 2 died during their secondary AD (antiphospholipid syndrome, hemophilia), and 1 death was HSCT-related. This European multicenter study underlines the need for careful management and follow-up for secondary AD after HSCT. 相似文献
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Leucuta SE 《Current Clinical Pharmacology》2010,5(4):257-280
Nanotechnology is a multidisciplinary scientific field that deals with the formulation, preparation, characterization and application of structures, devices and systems at nanometric scale. Area of concern is interdisciplinary, but with peculiarities, among others, medicine, pharmacy, biophysics, electronics, bioengineering, and molecular biology. Interest for modern nanotechnology lies in the creation and use of structures which have new properties because of their small size as well as the possibility of using these systems to control or manipulate biological structures at nanometric or atomic level. It will open the way to diagnosis and medical treatment to molecular level. This paper covers various fundamental and applied aspects of nanotechnology, in its chapters: introduction; nanoparticles (therapeutic polymers, polymeric nanoparticles, non-polymeric nanoparticles, liposomes, nanodevices) nanopharmaceutical systems used in diagnosis and therapy, in tissue engineering; pharmacokinetics and toxicity of nanoparticulate systems. Nanoparticulate systems have the potential to constitute a new generation of drug delivery systems. By their nature, nanodevices can be used as innovative diagnostic tool for detecting and monitoring disease, also for its treatment and use in developing new drugs. 相似文献
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David M Perlman Muthya Tejasvini Sudheendra Emilian Racilla Tadashi L Allen Avni Joshi Maneesh Bhargava 《Sarcoidosis, vasculitis, and diffuse lung diseases : official journal of WASOG / World Association of Sarcoidosis and Other Granulomatous Disorders》2021,38(3)
Common variable immunodeficiency (CVID) is one of the most common primary immunodeficiency disorders characterized by hypogammaglobulinemia and inadequate antibody response to immunizations. The impaired antibody response occurs due to the failure of B cells to differentiate into plasma cells resulting in low immunoglobulins levels and increased frequency of infections. Granulomatous and Lymphocytic Interstitial Lung Disease (GLILD) is a non-infectious complication of CVID that is seen in 10-30% of cases. GLILD is a multisystem inflammatory disease involving the lungs, lymph node, liver, spleen and gastrointestinal tract that mimics sarcoidosis. This report describes a series of cases who presented with dyspnea, recurrent respiratory infections or autoimmunity and on further evaluation revealed features suggestive of GLILD. There is very limited understanding of GLILD in terms of clinical presentation, the histo-pathological logical findings, and the diagnostic criteria by itself are limited. A diagnosis of GLILD is established in cases of CVID when there is evidence of lymphoproliferation, cytopenia, autoimmune processes and a lung biopsy demonstrating lymphocytic interstitial pneumonia, follicular bronchiolitis, lymphoid hyperplasia, and/or non-necrotizing granulomas. We review the treatment strategies, including replacement of immunoglobulin and agents targeting B and T lymphocytes. Systematic characterization of GLILD cases and long term follow up studies are sorely needed to understand the natural history of GLILD. 相似文献
9.
The effect of the shift from a low to a high luminosity of the environment on the urinary excretion of norepinephrine (NE) and epinephrine (E) was studied in migraineurs (26 cases) and controls (25 cases). In the latter the shift from a low to high light exposure increased NE excretion; in contrast, in migraineurs exposure to high luminosity resulted in a depression of NE excretion and an augmentation of E excretion. The possible participation of E discharge produced by photostimulation or by other stimuli in the pathogenesis of migraine attack is discussed. 相似文献
10.
Stem cell mobilization in patients with dialysis‐dependent multiple myeloma: Report of the Polish Myeloma Study Group
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Anna Waszczuk‐Gajda Joanna Drozd‐Sokołowska Piotr Boguradzki Jarosław Dybko Tomasz Wróbel Grzegorz Władysław Basak Krzysztof Mądry Emilian Snarski Grzegorz Charliński Ewa Frączak Joanna Matuszkiewicz‐Rowińska Marian Klinger Hanna Augustyniak‐Bartosik Magdalena Krajewska Paweł Żebrowski Maria Król Elżbieta Urbanowska Artur Jurczyszyn Michał Taszner Wieslaw Wiktor Jędrzejczak Jadwiga Dwilewicz‐Trojaczek 《Journal of clinical apheresis》2018,33(3):249-258