1,721,003 research outputs found
Current indications and results of thrombolysis by intravenous recombinant tissue plasminogen activator.
No full textA number of landmark trials have proven the efficacy of thrombolysis by intravenous recombinant tissue plasminogen activator in the acute phase of the ischemic stroke. Despite the recently extended time window of 4.5 hours, the number of people who are being treated in most centers is low. Several reasons seem to account for this, including poor recognition of symptoms, delays in emergency transport, low levels of public awareness, or age limits originally imposed by drug regulatory rules. Trials are ongoing to possibly extend the indications to the treatment. A major effort is to extend the time window by bridging the treatment with neuroprotective approaches, or by identifying subgroups that may particularly benefit from recanalization and reperfusion. Procedures using ultrasounds or alternative intravenous compounds are also being investigated with promising results. © 2012 Elsevier Inc
Pharmacokinetic evaluation of zolmitriptan for the treatment of migraines
No full textIntroduction: Migraine is a multifactorial neurovascular disorder characterized by recurrent episodes of disabling pain attacks, accompanied with gastrointestinal, neurological systems dysfunction. The pharmacologic treatment of migraine is classically divided in the management of the acute attack and preventive strategies. Acute treatments consist of triptan, ergot, opioid, antiemetic and NSAIDs. Areas covered: This article discusses pharmacodynamics and pharmacokinetics of zolmitriptan. The data were obtained by searching the following keywords in MEDLINE: zolmitriptan, pharmacokinetics, pharmacodynamics, triptans, migraine, menstrual-related migraine, cluster headache, relatively to the period 1989 2012. Expert opinion: Zolmitriptan has been considered effective treatment in the acute phase of migraine, menstrual-related migraine and cluster headache attacks. Pharmacokinetic parameters may vary as a consequence of gender differences, inter- and intra-subjects variability and delivery system. Zolmitriptan was developed with the aim of obtaining a lipophilic compound in order to be more rapidly absorbed and centrally active. Pharmacologically, pharmacokinetic parameters are responsible for its wide efficacy and the limited adverse effect profile. © 2012 Informa UK, Ltd
Treatment of Perimenstrual Migraine with Triptans. an Update
No full textPure menstrual migraine (PMM) and menstrually related migraine (MRM) are difficult challenges in migraine management. Triptans are a class of highly selective serotonin receptor agonists, which interfere with the pathogenesis of migraine and are effective in relieving the associated neurovegetative symptoms. In recent years triptans have been extensively proposed for the treatment of severe, disabling, and recurrent perimenstrual migraine attacks. This review summarizes the different levels of recommendations for the use of triptans in the treatment of perimenstrual migraine. This review is also intended to offer an updated reasonable guide to physicians treating perimenstrual migraine in daily practice
A2V: A semi-supervised domain adaptation framework for brain vessel segmentation via two-phase training angiography-to-venography
No full textPharmacokinetic evaluation of almotriptan for the treatment of migraines
No full textIntroduction: Migraine is a multifactorial neurovascular disorder characterized by recurrent episodes of disabling pain attacks, accompanied with gastrointestinal, neurological systems dysfunction. The pharmacologic treatment of migraine is classically divided in the management of the acute attack and preventive strategies. Triptans represent a powerful pharmacological tool in acute migraine treatment. However, a significant portion of treated patients cannot have access to this class due to possible adverse affects. Today, a total of seven triptan molecules are available, representing a commonly prescribed migraine treatment. Areas covered: The authors take a systematic approach to discuss the pharmacodynamic and pharmacokinetic aspects of almotriptan . They consider the emerging data on the clinical efficacy in the treatment of migraine and menstrual-related migraine. The data were obtained by searching the following key words in MEDLINE: pharmacokinetic, pharmacodynamic, triptans, almotriptan, migraine, menstrual migraine, relatively to the period 1989 - 2012. Expert opinion: The excellent efficacy and superior tolerability profile of almotriptan administered early offer a potential improvement over existing triptans for the symptomatic treatment of migraine attacks. Compared with other triptans, the different pathways involved in the metabolism of almotriptan ensure a limited variability of clinical response to the drug, making it less susceptible to the individual genomic background
High-performance liquid chromatography-tandem mass spectrometry method for simultaneous quantification of carbamazepine, oxcarbazepine, and their main metabolites in human serum.
No full textPharmacokinetic evaluation of frovatriptan
No full textIntroduction: Migraine is the most common painful neurological disorder, affecting 13% of the general population. Triptans represent a powerful pharmacological tool in acute migraine treatment, however, a significant portion of treated patients cannot have access to this class due to possible adverse affects. Today, a total of seven triptan molecules are available, representing a commonly prescribed migraine treatment. Although there is a need of extensive use of triptans, only 25% of migraine patients are using triptans. Areas covered: This review includes triptans and evidence for the use of frovatriptan. A systematic approach is used to discuss the pharmacodynamic and pharmacokinetic aspects of frovatriptan, considering the emerging data on the clinical efficacy of frovatriptan in the treatment of migraine and cluster headaches. The data were obtained by searching the following key words in MEDLINE: pharmacokinetic, pharmacodynamic, triptans, frovatriptan, migraine, menstrual migraine, relatively to the period 1988 - 2011. Expert opinion: Frovatriptan has been developed in order to improve safety and efficacy of triptans. It shows a favorable tolerability and efficacy profile, limited to 24/48-h headache recurrence, when compared with other triptans. Preclinical data suggest that the pharmacokinetic profile of frovatriptan may differ from other available triptans. In fact, among triptans, frovatriptan showed the highest potency at the 5-HT1B receptor (8.2) and the longer half-life (26 h). These parameters determine the clinical properties of frovatriptan; in particular the lowest rate of headache recurrence in comparison with other triptans
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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