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Copyright of Revista Española de Cardiología (18855857) is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Abstract: The crystal structure of ScB12 suggests the possible existence of the closo B24H24 2− borane and derived exo and endohedral complexes. The extraction of the B24 ‘perfect’ truncated octahedron from the ScB12 crystal structure and the minimization of the energy by means of quantum-chemical computations leads to a snub cube structure. The two found stable exohedral structures are energetically more favorable than the endohedral complex by only ∼1 and ∼9kcal/mol. The optimized geometry of the B24H24 2− molecular structure can be derived from the crystal fragment through a shrinkage plus pseudo-rotation of the B24 cage. Analogous solid structures embedding truncated octahedra are also compared with the title structure. [Copyright &y& Elsevier]

• Liver transplant recipients presented the highest incidence of Clostridioides difficile infection. • Previous hospitalization and the use of quinolones are related with Clostridioides difficile infection. • Kidney failure, amoxicillin-clavulanate, and severity may be associated with recurrent Clostridioides difficile infection. There is limited knowledge about risk factors for Clostridioides difficile infection (CDI) and recurrent CDI in solid organ transplant (SOT) recipients. A case-control study of CDI in SOT recipients compared with controls (SOT recipients who did not present CDI). Sixty-seven patients from 1089 SOT recipients (6.2%) suffered at least one episode of CDI. The mean age was 55 ± 12 years and 20 cases (69%) were men. The accumulated incidence was 8% in liver transplantation, 6.2% in lung transplantation, 5.4% in heart transplantation, and 4.7% in kidney transplantation. Twenty-nine cases (43.3%) were diagnosed during the first 3 months after SOT. Forty-one cases (61.2%) were hospital acquired. Thirty-one patients with CDI presented with mild-moderate infection (46.3%), 30 patients with severe infection (44.8%), and 6 patients with severe-complicated disease (9%). Independent variables found to be related with CDI were hospitalization in the previous 3 months (odds ratio: 2.99; [95% confidence interval 1.21-7.37]) and the use of quinolones in the previous month (odds ratio: 3.71 [95% confidence interval 1.16-11.8]). Eleven patients (16.4%) had at least one recurrence of CDI. Previous treatment with amoxicillin-clavulanate, severe-complicated index episode, and high serum creatinine were associated with recurrent CDI in the univariant analysis Liver transplant recipients presented the highest incidence of CDI among SOT recipients. Risk factors for CDI were hospitalization in the previous 3 months and the use of quinolones in the previous month. [ABSTRACT FROM AUTHOR]