Presciuttini S.,University of Pisa |
Gialluisi A.,University of Pisa |
Gialluisi A.,Max Planck Institute for Psycholinguistics |
Barbuti S.,Immunohematology Unit |
And 5 more authors.
Frontiers in Human Neuroscience | Year: 2013
Higher brain dopamine content depending on lower activity of Catechol-O-Methyltransferase (COMT) in subjects with high hypnotizability scores (highs) has been considered responsible for their attentional characteristics. However, the results of the previous genetic studies on association between hypnotizability and the COMT single nucleotide polymorphism (SNP) rs4680 (Val158Met) were inconsistent. Here, we used a selective genotyping approach to re-evaluate the association between hypnotizability and COMT in the context of a two-SNP haplotype analysis, considering not only the Val158Met polymorphism, but also the closely located rs4818 SNP. An Italian sample of 53 highs, 49 low hypnotizable subjects (lows), and 57 controls, were genotyped for a segment of 805 bp of the COMT gene, including Val158Met and the closely located rs4818 SNP. Our selective genotyping approach had 97.1% power to detect the previously reported strongest association at the significance level of 5%. We found no evidence of association at the SNP, haplotype, and diplotype levels. Thus, our results challenge the dopamine-based theory of hypnosis and indirectly support recent neuropsychological and neurophysiological findings reporting the lack of any association between hypnotizability and focused attention abilities. © 2014 Presciuttini, Gialluisi, Barbuti, Curcio, Scatena, Carli and Santar-cangelo.
Bindi M.L.,Liver Transplant Anaesthesia and Critical Care Medicine |
Miccoli M.,University of Pisa |
Marietta M.,Haemostasis and Thrombosis Unit |
Meacci L.,Liver Transplant Anaesthesia and Critical Care Medicine |
And 8 more authors.
Vox Sanguinis | Year: 2013
Background: Although orthotopic liver transplantation (OLT) is nowadays considered standard practice at experienced centres, it can still be affected by a significant risk of massive bleeding and its related complications. Solvent/detergent plasma (S/D Plasma) has been proposed as an alternative to fresh frozen plasma (FFP) to curtail such complications. This study aimed at evaluating the efficacy of S/D Plasma in OLT patients by comparing it to FFP. Materials and Methods: Sixty-three OLT patients were randomized into two groups depending on whether they were transfused with FFP or S/D plasma. A thromboelastography-based protocol aimed at achieving and maintaining predetermined coagulation goals was used to guide plasma transfusions. At the beginning and the end of surgery, standard laboratory coagulation tests were performed together with the assessment of the VII, VIII, V, XII factors and S protein blood levels. Results: The two study groups equally achieved the thromboelastography goals but with a reduced amount of transfusions in the S/D plasma group (P < 0·0001). At the end of surgery, factors V and XII and S protein blood levels were lower in the S/D plasma patients who also showed lower INR, aPTT and antithrombin III levels. Conclusion: In cirrhotic patients undergoing OLT, the use of S\D plasma associated with thromboelastography allows the same clinical results but with a significant reduction in the amount of plasma transfusions. © 2013 International Society of Blood Transfusion.