778 notizie
In 1963 an MIT meteorologist revealed deterministic predictability to be an illusion and gave birth to a field that still thrives.
Bohr’s atomic theory was addressed as much to chemical problems as to physical ones. But the great scientist’s intent to establish a new framework for atomic and molecular chemistry was less successful, and was unacknowledged by most chemists.
Intravenous romidepsin (Istodax®), a histone deacetylase inhibitor, is indicated in the US for the treatment of cutaneous T-cell lymphoma (CTCL) in adults who have received at least one prior systemic therapy. In two noncomparative trials in adults with relapsed, refractory, and/or advanced CTCL, romidepsin was associated with an overall response (i.e. complete or partial response) rate of 34% and 35%, and a complete response rate of 6% (in both trials). Romidepsin had an acceptable tolerability profile, with the most common grade 3 or 4 adverse events considered at least possibly related to romidepsin being hematologic or asthenic in nature.
No abstract available
1112 notizie
Role of inferior vena cava and right ventricular diameter in assessment of volume status: a comparative study: Ultrasound and hypovolemia
Abstract: Objective: Ultrasonography has been suggested as a useful noninvasive tool for the detection and follow-up for hypovolemia. Two possible sonographic markers as a surrogate for hypovolemia are the diameters of the inferior vena cava (dIVC) and the right ventricle (dRV). The goal of this study was to evaluate IVC and RV diameters and diameter changes in patients treated for hypovolemia and compare these findings with healthy volunteers.Methods: Fifty healthy volunteers and 50 consecutive hypovolemic patients were enrolled in the study. The dIVC, both during inspiration (IVCi) and expiration (IVCe), was measured in hypovolemic patients both before and after fluid resuscitation, and they were also measured in healthy volunteers during the time they participated in the study. The dIVC, in hypovolemic patients both before and after fluid resuscitation, was measured ultrasonographically by M-mode in the subxiphoid area. The dRV was measured ultrasonographically by B-mode in the third and fourth intercostals spaces.Results: The average diameters of the IVCe, IVCi, and dRV in hypovolemic patients upon arrival were significantly lower compared with healthy volunteers (P = .001). After fluid resuscitation, there was a significant increase in the mean diameters of the IVCe, IVCi, and RV in hypovolemic patients (P = .001).Conclusions: The results indicate that the dIVC and dRV are consistently low in hypovolemic subjects when compared with euvolemic subjects. Bedside serial measurements of dIVC and dRV could be a useful noninvasive tool for the detection and follow-up of patients with hypovolemia and evaluation of the response to the treatment.
Ulinastatin improved cardiac dysfunction after cardiac arrest in New Zealand rabbits
Abstract: Objective: The present study was designed to evaluate the effects of ulinastatin (UTI) on cardiac dysfunction after cardiopulmonary resuscitation (CPR).Methods: A total of 48 healthy adult male New Zealand rabbits were untreated for 8 minutes after the induction of ventricular fibrillation (VF) by an external transthoracic alternating current and then treated by CPR. These rabbits were then randomly divided into the control and UTI groups after the return of spontaneous circulation (ROSC) and were observed for 8 hours after the ROSC. Before CPR and after ROSC at 2, 4, and 8 hours, blood samples were collected to determine the levels of tumor necrosis factor α (TNF-α), interleukin-6 (IL-6), malondialdehyde (MDA), cardiac troponin I (cTnI), and N-terminal probrain natriuretic peptide (NT-proBNP), and the left ventricular ejection fraction (EF) was measured by echocardiography.Results: Nineteen of 24 rabbits in the control group and 18 of 24 in the UTI group were successfully resuscitated. The plasma levels of TNF-α, IL-6, MDA, cTnI, and NT-proBNP were significantly increased, accompanying a deceased EF in the control group, but the cotreatment with UTI decreased the plasma levels of TNF-α, IL-6, MDA, cTnI, and NT-proBNP (P < .05), attenuating the myocardial injury and improving the EF in the UTI group. Only 9 of 19 animals in the control group but 14 of 18 animals in the UTI group survived longer than 8 hours (P = .011).Conclusions: The progression of proinflammatory responses, oxidative stress, and myocardial injury have been linked to the reduced EF after VF/CPR, and the administration of UTI at a cardioprotective dosage preserved the cardiac function after VF/CPR.
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