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Redondo-Munoz J.,CSIC - Biological Research Center | Ugarte-Berzal E.,CSIC - Biological Research Center | Terol M.J.,Hospital Clinico Universitario | Van den Steen P.E.,Rega Institute for Medical Research | And 6 more authors.
Cancer Cell | Year: 2010

Matrix metalloproteinase-9 (MMP-9) is the major MMP produced by B-CLL cells and contributes to their tissue infiltration by degrading extracellular and membrane-anchored substrates. Here we describe a different function for MMP-9 in B-CLL, which involves the hemopexin domain rather than its catalytic function. Binding of soluble or immobilized (pro)MMP-9, a catalytically inactive proMMP-9 mutant, or the MMP-9 hemopexin domain to its docking receptors α4β1 integrin and CD44v, induces an intracellular signaling pathway that prevents B-CLL apoptosis. This pathway is induced in all B-CLL cases, is active in B-CLL lymphoid tissues, and consists of Lyn activation, STAT3 phosphorylation, and Mcl-1 upregulation. Our results establish that MMP/receptor binding induces intracellular survival signals and highlight the role of (pro)MMP-9 in B-CLL pathogenesis. © 2010 Elsevier Inc. All rights reserved. Source

Alfageme Roldan F.,Hospital Universitario Puerta Of Hierro
Actas Dermo-Sifiliograficas | Year: 2016

Elastography is a recently developed ultrasound technique applicable to various medical specialties. It provides information on the physical properties of tissues in the context of physiologic and pathologic alterations. In this review we explain the physical principles of the method, the information provided by the different elastography techniques, and its new applications in clinical dermatology. © 2016 AEDV. Source

Bermejo P.E.,Hospital Universitario Puerta Of Hierro | Ruiz-Huete C.,Servicio de Neurologia | Anciones B.,Servicio de Neurologia
Journal of Neurology | Year: 2010

Impulse control disorders (ICDs) are a set of behaviours that take place in a subgroup of patients with Parkinson's disease (PD). Although reduction or switch of dopamine agonists or decrease of levodopa are the common treatment, this does not always improve the compulsive behaviour. Zonisamide (ZNS) has proved effective for motor symptoms in PD and it may be also useful in the field of ICDs. The aim of our study is to evaluate the safety and efficacy of ZNS in PD patients with ICDs who did not improve following a reduction of either levodopa or dopamine agonists. Fifteen patients were initiated on 25 mg/day ZNS dosage, which was titrated to 200 mg/day, as tolerated. Severity of the behaviours was assessed by means of the Clinical Global Impression and the Barratt Impulsiveness Scale, while motor impairment was assessed by means of the Unified Parkinson's Disease Rating Scale (UPDRS). Demographic data, medication dose, treatment duration and adverse events were also collected and analyzed. There was a marked reduction in the severity of impulsive behaviours and global impulsiveness (mean change from baseline -5.8 to -4.8, respectively). UPDRS changed only marginally. ZNS was generally well tolerated. Our study suggests that ZNS may be effective for ICDs in PD. The lack of studies with other medications to treat these behaviours in PD and the potential beneficial effects of ZNS for motor complications make this drug important in the treatment of the disease. © Springer-Verlag 2010. Source

Lopez-Botet M.,Hospital del Mar Medical Research Institute IMIM | Lopez-Botet M.,University Pompeu Fabra | Muntasell A.,Hospital del Mar Medical Research Institute IMIM | Vilches C.,Hospital Universitario Puerta Of Hierro
Seminars in Immunology | Year: 2014

Human cytomegalovirus (HCMV) causes a highly prevalent and lifelong infection, with a multifaceted impact in human health. NK cells play an important role in the immune response to HCMV and the virus has reciprocally developed a variety of immune evasion strategies. We originally reported that HCMV infection promotes, to a variable degree in healthy individuals, a redistribution of the NK-cell receptor (NKR) repertoire which persists under steady-state conditions. Its hallmark is an expansion of a mature NK-cell subset displaying high surface levels of the CD94/NKG2C activating receptor, with additional distinctive phenotypic and functional features. Such adaptation of host NK cells to HCMV infection, confirmed in different clinical settings, is particularly magnified in immunocompromised patients and influenced by NKG2C gene copy number. The mechanism(s) underlying the differentiation and proliferation of NKG2C+ NK cells, the basis for the individual differences in the magnitude of their expansion, and their precise role in anti-viral defence remain open issues. Moreover, the possibility that the impact of HCMV infection on the NK-cell compartment may exert a broader influence on immunity deserves further attention. © 2014 Elsevier Ltd. Source

Asensio A.,Hospital Universitario Puerta Of Hierro | Monge D.,Servicio de Epidemiologia
Enfermedades Infecciosas y Microbiologia Clinica | Year: 2012

There has been increasing interest in Clostridium difficile infection (CDI) due its association with healthcare and its impact on morbidity and mortality in the elderly. During the last few years there has been a growing increase in the number of published studies on the incidence, changes on the clinical presentation and on the epidemiology, with the description of new risk factors. The frequency of CDI in Spain is not sufficiently characterised. The available data indicates that incidence is within the range of that of surrounding countries but increasing. Furthermore, the high and growing use of broad spectrum antibiotics, both in our hospitals and in the community setting, are factors that favour the increase of the disease. The hyper-virulent ribotype 027 has not spread in our hospitals. We need to know with enhanced validity and accuracy the incidence of CDI, both community and healthcare-associated, the information on outbreaks, the incidence on certain population groups, the characterisation of circulating ribotypes and the impact of the disease in terms of mortality and health costs. We need to implement programs for the improvement of antibiotic therapy in the hospital, as well as in the community. Furthermore, the knowledge and the performance of standard precautions need to be improved, particularly hand hygiene, and the specific measures to limit the transmission of C. difficile among the healthcare institutions. © 2011 Elsevier España, S.L. All rights reserved. Source

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