Cytomegalovirus and ClostridiumDifficile co-infection in severe ulcero-hemorrhagic colitis during inductionchemotherapy for acute lymphoblastic leukemia

Here we describe the first case of a biopsyprovenCytomegalovirus ulcero-hemorrhagic colitis,associated with Clostridium Difficile co-infection,occurring during standard induction chemotherapyfor common B cell acute lymphoblastic leukemia.We discuss the case and focalize clinical managementand diagnostic issues arising from it

Incidence, treatment and outcome of central nervous system relapse in adult acute lymphoblastic leukaemia patients treated front-line with paediatric-inspired regimens: A retrospective multicentre Campus ALL study

Within the Campus ALL network we analyzed the incidence, characteristics, treatment and outcome of a central nervous system (CNS) relapse in 1035 consecutive adult acute lymphoblastic leukemia (ALL) patients treated frontline with pediatric-inspired protocols between 2009 and 2020. Seventy-one patients (6.8%) experienced a CNS recurrence, more frequently in T- (28/278; 10%) than in B-ALL (43/757; 5.7%) (p = 0.017). An early CNS relapse—< 12 months from diagnosis—was observed in 41 patients. In multivariate analysis, risk factors for early CNS relapse included T-cell phenotype (p = <0.001), hyperleucocytosis >100 × 109/L (p<0.001) and male gender (p = 0.015). Treatment was heterogeneous, including chemotherapy, radiotherapy, intrathecal therapy and novel agents. A complete remission (CR) was obtained in 39 patients (55%) with no differences among strategies. After CR, 26 patients underwent an allogenic transplant, with a significant overall survival benefit compared to non-transplanted patients (p = 0.012). After a median observation of 8 months from CNS relapse, 23 patients (32%) were alive. In multivariate analysis, the time to CNS relapse was the strongest predictor of a lower 2-year post-relapse survival (p<0.001). In conclusion, in adult ALL the outcome after a CNS relapse remains very poor. Effective CNS prophylaxis remains the best approach and allogenic transplant should be pursued when possible

Interactions between bismuth oxide and ceramic substrates for thick film technology

We investigated the interaction between screen printed and fired layers consisting of either PbO or Bi2O3 and ceramic substrates: alluminia and berylia; It was found that PbO interacts with aluminia via two main processes viz. a reaction between PbO and Al2O3 grains which induces the formation of Pb2Al2O5, and an interdiffusion process involving Pb and the intergranular amorphous phase in the substrate. Until PbO is not exhausted, the penetration depth of Pb in the ceramic is diffusion limited with an activation energy of 1.20 ± 0.05 e V. Berylia exhibit similar effects but no Be-bearing compound was observed. Very different results were found with Bi2O3 layers, where the reaction products are invariably crystalline in nature: e.g. Bi2O3 polymorphic phases (BeO substrates), Al4Bi2O9 (99%-alumina), Bi12SiO20(96%-alumina

Synthesis and cytotoxic evaluation of combretafurans, potential scaffolds for dual-action antitumoral agents

We have synthesized rigid analogues of combretastatin bearing a furan ring in place of the olefinic bridge. These compounds are cytotoxic at nanomolar concentrations in neuroblastoma cells, display a similar structure- activity relationship compared to combretastatin A4, and inhibit tubulin polymerization. We also show that the furan ring can be further functionalized. Thus, it is possible that combretafurans could act as scaffolds for the development of dual-action antitumoral agents