RESUMEN
The discovery of Chlorovibrissea chilensis sp. nov.expands the distribution of Chlorovibrissea from Australasia to include South America. C. chilensis, phylogenetically distinct from other species in the genus, is also characterized morphologically by its ascoma with emerald green stalk and pale orange-brown head, budding paraphyses and 5-6-septate ascospores. Based on the phylogenetic analysis, the Australasian species Vibrisseaalbofusca is recombined in Chlorovibrissea, despite the fact it lacks the distinctive green pigmentation of other species in this genus. In addition, the genus Vibrissea in a strict phylogenetic sense is confirmed from the southern hemisphere for the first time; Vibrissea truncorum is reported from Chile and V. flavovirens from New Zealand.
Asunto(s)
Ascomicetos/clasificación , Ascomicetos/citología , Ascomicetos/genética , Ascomicetos/aislamiento & purificación , Australia , Secuencia de Bases , Chile , ADN de Hongos/química , ADN de Hongos/genética , ADN Espaciador Ribosómico/química , ADN Espaciador Ribosómico/genética , Geografía , Datos de Secuencia Molecular , Nueva Zelanda , Filogenia , Análisis de Secuencia de ADN , América del Sur , Esporas FúngicasRESUMEN
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Asunto(s)
Femenino , Humanos , Servicio de Radiología en Hospital/organización & administración , Neoplasias de la Mama , Comunicación , Servicio de Radiología en Hospital/normasRESUMEN
The initial chemotherapy in acute myeloid leukaemia (AML) comprises a first phase of induction and a second phase of consolidation. In the majority of patients, the induction treatment leads to complete remission (CR), defined as microscopic disappearance of leukaemic disease along with the return of normal haematopoiesis. However, despite the introduction of more efficacious consolidation regimens, a worryingly large proportion of AML patients in CR will subsequently experience relapses with poor prospects of long-term survival. A relapse is assumed to be the result of expansion of residual leukaemic cells that have escaped the initial chemotherapy. The anti-leukaemic functions of T cells and natural killer (NK) cells has formed the background to the use of interleukin-2 (IL-2), a T- and NK cell-activating cytokine, with the aim to eliminate residual leukaemia and hence reduce the relapse rate in AML, but the clinical trials using IL-2 monotherapy have yielded disappointment. A recent phase III study has demonstrated that post-consolidation treatment with the combination of histamine dihydrochloride (HDC) and IL-2 significantly prevents relapse in AML patients. Here we account for the preclinical background to the use of HDC/IL-2 in AML along with a review of clinical results.
Asunto(s)
Antineoplásicos/uso terapéutico , Agonistas de los Receptores Histamínicos/uso terapéutico , Histamina/uso terapéutico , Inmunoterapia/métodos , Interleucina-2/uso terapéutico , Leucemia Mieloide Aguda/terapia , Animales , Ensayos Clínicos como Asunto , Humanos , Células Asesinas Naturales/inmunología , Células Asesinas Naturales/metabolismo , Linfocitos T/inmunología , Linfocitos T/metabolismo , Ensayos Antitumor por Modelo de XenoinjertoAsunto(s)
Agonistas de los Receptores Histamínicos/uso terapéutico , Histamina/uso terapéutico , Interleucina-2/uso terapéutico , Leucemia Mieloide Aguda/tratamiento farmacológico , Ensayos Clínicos como Asunto , Supervivencia sin Enfermedad , Quimioterapia Combinada , Histamina/inmunología , Agonistas de los Receptores Histamínicos/inmunología , Humanos , Interleucina-2/inmunología , Leucemia Mieloide Aguda/inmunología , Inducción de RemisiónRESUMEN
Liver steatosis is highly prevalent in chronic hepatitis C virus (HCV) infection, especially in patients infected with genotype 3 virus, but its significance for the outcome of antiviral treatment is not fully understood. We have monitored steatosis in liver biopsies from 231 patients with chronic HCV infection who received pegylated recombinant interferon-alpha and ribavirin in a phase III study (DITTO trial). The degree of steatosis, along with relevant metabolic parameters, was correlated with the early disappearance of virus and with the final outcome of treatment. Our data suggest that the presence of steatosis impairs the early reduction of viral load during treatment in patients infected with HCV genotype 3 and non-3. Steatosis negatively affected the final outcome of treatment mainly in patients infected with HCV genotype non-3 virus. Based on these findings, we propose that interventions aiming at reducing hepatic steatosis prior to the onset of antiviral therapy may be of benefit to patients infected with HCV of the non-3 genotypes. Patients infected with genotype 3, on the other hand, should be offered early antiviral treatment.
