OBJECTIVES The goal of this study was to compare regadenoson and dipyridamole hyperemia for quantitative myocardial perfusion imaging. BACKGROUND Regadenoson is commonly used for stress perfusion imaging. However, no study in nuclear cardiology has employed a paired design to compare quantitative hyperemic flow from regadenoson to more traditional agents such as dipyridamole. Additionally, th...

OBJECTIVE To conduct a cost-minimization analysis of intravenous adenosine and intravenous dipyridamole in thallous chloride TI 201 single-photon emission computed tomography (SPECT) myocardial perfusion imaging. DESIGN A retrospective, open-label, cost-minimization analysis. SETTING University hospital, outpatient nuclear medicine department. PATIENTS Eighty-three patients undergoing dip...

The aim of this study was to assess the safety and prognostic value of dipyridamole 201T1 imaging very early after acute myocardial infarction in patients treated with thrombolytic therapy. Fifty-two consecutive patients with an uncomplicated clinical course underwent quantitative planar dipyridamole 201T1 imaging 2 5 days after acute myocardial infarction. The patients were followed for 14 +/-...

BACKGROUND AND PURPOSE The combination of dipyridamole and aspirin has been shown to be more effective than aspirin alone in the secondary prevention of stroke. Dipyridamole may act by inhibiting adenosine uptake, thus potentiating its actions. Dipyridamole also inhibits cGMP-specific phosphodiesterases (PDE) and, through this mechanism, could potentiate cGMP-mediated actions of nitric oxide. ...

the bioavailability of two dipyridamol tablet formulations of (dipyridamole from tolidaru and persantin from boehringer) was compared in 14 healthy male volunteers who received a single dose of 25 mg of the test (t) and the reference (r) products in a randomized balanced 2-way crossover design. plasma samples were obtained over a 16 h interval and dipyridamole concentrations determined by hplc ...

BACKGROUND The assessment of cardiospecific troponins is the main stay for diagnosing myocardial injury, although their diagnostic sensitivity remains suboptimal at patient admission to the emergency department (ED), thus paving the way for translational research to identify early and complementary biomarkers which may help improve the diagnostic sensitivity of high-sensitivity troponin immunoa...

BACKGROUND All studied photosensitizers for virus inactivation impair RBCs. To reduce damage to the RBCs without affecting virucidal activity, selective protection of the RBCs is necessary. The ability of the band 3 ligand, dipyridamole, to react with singlet oxygen and to increase the selectivity of photosterilization was investigated. STUDY DESIGN AND METHODS Solutions of dipyridamole were ...

Zidovudine delays the progression of infection and prolongs the survival of human immunodeficiency virus (HIV)-infected patients, but these benefits are limited by dose-related toxicity and the cost of the drug. Dipyridamole, in micromolar concentrations, acts synergistically with zidovudine, reducing the anti-HIV 95% inhibitory concentration of zidovudine 5- to 10-fold in vitro. We sought to e...

We have performed two Phase I trials of the combination of dipyridamole, 5-fluorouracil (5-FU), and folinic acid in patients with advanced refractory malignancy, based upon in vitro evidence that dipyridamole can modulate the cytotoxicity of 5-FU. In the first trial, patients were treated every 4 wk with dipyridamole (50 mg/m2) p.o. every 6 h on Days 0 to 6, beginning 24 h prior to the i.v. adm...

The effect of intraperitoneal injections of dipyridamole on the elevations of intraocular pressure and anterior chamber aqueous humor protein produced by topical application of prostaglandin E2 was studied in rabbits. Pretreatment with 100 mg/kg dipyridamole inhibited the prostaglandin E2--induced ocular hypertension and rise of aqueous humor protein. Systemic administration of dipyridamole did...