Oxo-centered carboxylate-bridged trinuclear complexes deposited on Au(111) by a mass-selective electrospray.

We developed an apparatus for nondestructive in vacuum deposition of mass-selected fragile Cr based metal trinuclear complexes, by modifying a commercial Mass Spectrometer containing an electrospray ionization source. Starting from a solution, this system creates a beam of ionized molecules which is then transferred into an evacuated region where the molecules can be mass selected before deposition. To verify the system efficiency, we deposited sub monolayers of oxo-centered carboxylate-bridged trinuclear complexes (Cr3 and Cr2Ni) on Au(111) surface. By XPS and STM we determined the deposited molecule stoichiometry and the surface coverage. The results show that this apparatus is works well for the in vacuum deposition of molecular nanomagnets and, thanks to its reduced dimensions, it is portable

Imatinib therapy in Hypereosinophilic Syndrome: a case of molecular remission

No abstract availabl

Role of low-dose 2-CdA in refractory or resistant lymphoplasmocytic lymphoma

Cladribrine (2-CdA), a purine analogue active on both dividing and resting lymphocytes, plays an important role in the treatment of indolent lymphoproliferative malignancies such as Hairy Cell Leukemia (HCL), Chronic Lymphocytic Leukemia (CLL), Lymphoplasmocytic Lymphoma (LPL), Waldenström's Macroglobulinemia (WM). With the aim of evaluating the efficacy and toxicity of low dose 2-CdA, 15 lymphoplasmocytic lymphoma patients, not eligible for more aggressive or standard therapies, because of age or poor performance status, were treated with the drug at a dose of 5 mg/m2, once a week for six total courses. All patients showed disease progression. Fourteen patients were valuable for response. In eleven out of these 14 (85.7%) disease progression stopped, with 21% having good hematological responses (one CR and two PR). The treatment was generally well tolerated, without serious infectious events. This schedule may be appropriate for the management of patients where the aim of the treatment is control of disease progression

Efficacy and toxicity of liposomal daunorubicin included in PVABEC regimen for aggressive NHL of the elderly

Liposomes used for delivering antineoplastic drugs to sites of disease are able to minimize side effects and enhance therapeutic efficacy. Liposomal Daunorubicin (Daunoxome; DNX) has a selective and higher accumulation in neoplastic tissues and seems to be able to escape Multi-Drug Resistance (MDR). We treated 35 elderly patients with aggressive non-Hodgkin's lymphoma (NHL) with PVBECDNX, a regimen analogue to P-VABEC in which doxorubicin is replaced with DNX at a dose of 50 mg (first 13 patients) and thereafter 50 mg/m2. Twenty-six out of 35 patients were evaluable for response; 15 obtained a CR, 5 a PR (overall response rate of 77%). After a median follow-up of 13 months the 2-years actuarial overall survival was 75% and the failure-free survival was 71%. Two patients out of six no responders died because of progression of disease, and one died in CR because of pre-existing cardiovascular disorders. Eight patients did not tolerate DNX infusion (back pain). Non-haematological toxicity was mild. This study confirms that PVABEC-like regimens are able to induce a high overall response rate in a percentage of patients affected by aggressive lymphoma and shows that DNX is as effective as Daunorubicin in these disorders, but its acute toxicity is reduced

Oral cyclophosphamide therapy for patients with residual or relapsed indolent-type lymphoma after initial treatment for aggressive lymphomas. A sub-group of patients with apparent transformed indolent lymphoma.

Lymph node or bone marrow biopsy from sixty-one patients affected by aggressive non-Hodgkin lymphomas (NHL) were retrospectively evaluated to assess the histology at relapse. Eighteen cases (29.5%) were proven to have relapsed or persistent low-grade lymphoma after conventional therapy. In 5/18 patients association of low and high-grade lymphoma was detectable at diagnosis by bone marrow biopsy. In the remaining 13/18 no evidence of follicular lymphoma was detected at diagnosis. The outcome of these patients was compared to that of 43 patients relapsed without change in histology and treated by a second line therapy. Of these 43 patients, 13 were not responders (NR), 10 achieved a partial remission (PR) and 18 complete remission (CR). Two were lost during follow-up. The 18 patients with residual/relapsed indolent subtype received oral cyclophosphamide (100 mg/day for 15 days every month for six months): 3 of them had NR, 5 CR, and 10 PR. The overall survival (OS) median time was 39 months in low-grade resistant/relapsed patients and 20 months in patients with aggressive histology. OS at 24 months was 71 and 41%, respectively, (p < 0.02). Most of the patients with high-grade disease were refractory or relapsed after a median of five months, whereas cases with low-grade NHL showed a long lasting stable PR. We suggest that the higher grade patients with residual or relapsed low grade lymphoma were, in fact, transformed low-grade at diagnosis and, after removing the more aggressive component by chemotherapy, it is possible to manage these patients by conventional therapy for indolent lymphomas