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1.
Ann Oncol ; 33(11): 1119-1133, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-35963481

RESUMO

BACKGROUND: The increased number of cancer survivors and the recognition of physical and psychosocial challenges, present from cancer diagnosis through active treatment and beyond, led to the discipline of cancer survivorship. DESIGN AND METHODS: Herein, we reflected on the different components of survivorship care, existing models and priorities, in order to facilitate the promotion of high-quality European survivorship care and research. RESULTS: We identified five main components of survivorship care: (i) physical effects of cancer and chronic medical conditions; (ii) psychological effects of cancer; (iii) social, work and financial effects of cancer; (iv) surveillance for recurrences and second cancers; and (v) cancer prevention and overall health and well-being promotion. Survivorship care can be delivered by structured care models including but not limited to shared models integrating primary care and oncology services. The choice of the care model to be implemented has to be adapted to local realities. High-quality care should be expedited by the generation of: (i) focused and shared European recommendations, (ii) creation of tools to facilitate implementation of coordinated care and (iii) survivorship educational programs for health care teams and patients. The research agenda should be defined with the participation of health care providers, researchers, policy makers, patients and caregivers. The following patient-centered survivorship research areas were highlighted: (i) generation of a big data platform to collect long-term real-world data in survivors and healthy controls to (a) understand the resources, needs and preferences of patients with cancer, and (b) understand biological determinants of survivorship issues, and (ii) develop innovative effective interventions focused on the main components of survivorship care. CONCLUSIONS: The European Society for Medical Oncology (ESMO) can actively contribute in the efforts of the oncology community toward (a) promoting the development of high-quality survivorship care programs, (b) providing educational material and (c) aiding groundbreaking research by reflecting on priorities and by supporting research networking.


Assuntos
Sobreviventes de Câncer , Neoplasias , Humanos , Sobreviventes de Câncer/psicologia , Europa (Continente) , Oncologia , Neoplasias/terapia , Neoplasias/psicologia , Sobrevivência
2.
Neurol Sci ; 43(9): 5459-5469, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-35672479

RESUMO

BACKGROUND: Multiple sclerosis (MS) is characterized by phenotypical heterogeneity, partly resulting from demographic and environmental risk factors. Socio-economic factors and the characteristics of local MS facilities might also play a part. METHODS: This study included patients with a confirmed MS diagnosis enrolled in the Italian MS and Related Disorders Register in 2000-2021. Patients at first visit were classified as having a clinically isolated syndrome (CIS), relapsing-remitting (RR), primary progressive (PP), progressive-relapsing (PR), or secondary progressive MS (SP). Demographic and clinical characteristics were analyzed, with centers' characteristics, geographic macro-areas, and Deprivation Index. We computed the odds ratios (OR) for CIS, PP/PR, and SP phenotypes, compared to the RR, using multivariate, multinomial, mixed effects logistic regression models. RESULTS: In all 35,243 patients from 106 centers were included. The OR of presenting more advanced MS phenotypes than the RR phenotype at first visit significantly diminished in relation to calendar period. Females were at a significantly lower risk of a PP/PR or SP phenotype. Older age was associated with CIS, PP/PR, and SP. The risk of a longer interval between disease onset and first visit was lower for the CIS phenotype, but higher for PP/PR and SP. The probability of SP at first visit was greater in the South of Italy. DISCUSSION: Differences in the phenotype of MS patients first seen in Italian centers can be only partly explained by differences in the centers' characteristics. The demographic and socio-economic characteristics of MS patients seem to be the main determinants of the phenotypes at first referral.


Assuntos
Esclerose Múltipla Crônica Progressiva , Esclerose Múltipla Recidivante-Remitente , Esclerose Múltipla , Feminino , Humanos , Esclerose Múltipla/complicações , Esclerose Múltipla Crônica Progressiva/complicações , Esclerose Múltipla Crônica Progressiva/epidemiologia , Esclerose Múltipla Recidivante-Remitente/complicações , Esclerose Múltipla Recidivante-Remitente/epidemiologia , Fenótipo , Recidiva , Encaminhamento e Consulta
3.
Sci Rep ; 11(1): 10523, 2021 05 18.
Artigo em Inglês | MEDLINE | ID: mdl-34006972

RESUMO

Proteasome inhibitors (PIs) represent the gold standard in the treatment of multiple myeloma. Among PIs, Bortezomib (BTZ) is frequently used as first line therapy, but peripheral neuropathy (PN), occurring approximately in 50% of patients, impairs their life, representing a dose-limiting toxicity. Carfilzomib (CFZ), a second-generation PI, induces a significantly less severe PN. We investigated possible BTZ and CFZ off-targets able to explain their different neurotoxicity profiles. In order to identify the possible PIs off-targets we used the SPILLO-PBSS software that performs a structure-based in silico screening on a proteome-wide scale. Among the top-ranked off-targets of BTZ identified by SPILLO-PBSS we focused on tubulin which, by contrast, did not turn out to be an off-target of CFZ. We tested the hypothesis that the direct interaction between BTZ and microtubules would inhibit the tubulin alfa GTPase activity, thus reducing the microtubule catastrophe and consequently furthering the microtubules polymerization. This hypothesis was validated in a cell-free model, since BTZ (but not CFZ) reduces the concentration of the free phosphate released during GTP hydrolysis. Moreover, NMR binding studies clearly demonstrated that BTZ, unlike CFZ, is able to interact with both tubulin dimers and polymerized form. Our data suggest that different BTZ and CFZ neurotoxicity profiles are independent from their proteasome inhibition, as demonstrated in adult mice dorsal root ganglia primary sensory neurons, and, first, we demonstrate, in a cell free model, that BTZ is able to directly bind and perturb microtubules.


Assuntos
Antineoplásicos/toxicidade , Bortezomib/toxicidade , Oligopeptídeos/toxicidade , Doenças do Sistema Nervoso Periférico/induzido quimicamente , Inibidores de Proteassoma/toxicidade , Tubulina (Proteína)/metabolismo , Animais , Biopolímeros/metabolismo , Linhagem Celular , Simulação por Computador , Guanosina Difosfato/metabolismo , Guanosina Trifosfato/metabolismo , Humanos , Camundongos , Neurônios/efeitos dos fármacos , Ligação Proteica
4.
Rev Neurol (Paris) ; 177(8): 890-907, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-33648782

RESUMO

The increased survival of cancer patients has raised growing public health concern on associated long-term consequences of antineoplastic treatment. Chemotherapy-induced peripheral neuropathy (CIPN) is a primarily sensory polyneuropathy, which may be accompanied by pain, autonomic disturbances, and motor deficit. About 70% of treated cancer patients might develop CIPN during or after the completion of chemotherapy, and in most of them such complication persists after six months from the treatment. The definition of the potential risk of development and resolution of CIPN according to a clinical and biochemical profile would be certainly fundamental to tailor chemotherapy regimen and dosage on individual susceptibility. In recent years, patient-reported and clinician-related tools along with quality of life instruments have been featured as primary outcomes in clinical setting and randomized trials. New studies on metabolomics markers are further pursuing accurate and easily accessible indicators of peripheral nerve damage. The aim of this review is to outline the strengths and pitfalls of current knowledge on CIPN, and to provide a framework for future potential developments of standardized protocols involving clinical and biochemical markers for CIPN assessment and monitoring.


Assuntos
Antineoplásicos , Neoplasias , Doenças do Sistema Nervoso Periférico , Antineoplásicos/efeitos adversos , Biomarcadores , Humanos , Neoplasias/complicações , Neoplasias/diagnóstico , Neoplasias/tratamento farmacológico , Doenças do Sistema Nervoso Periférico/induzido quimicamente , Doenças do Sistema Nervoso Periférico/diagnóstico , Qualidade de Vida
5.
Neurosci Lett ; 749: 135739, 2021 04 01.
Artigo em Inglês | MEDLINE | ID: mdl-33600907

RESUMO

Chemotherapy-induced peripheral neuropathy (CIPN) has long been recognized as a clinically significant issue in patients treated with antineoplastic drugs. This common long-term toxic side-effect which negatively impacts the outcome of the disease can lead to disability and have detrimental effects on patients' quality of life. Since axonal injury is a prominent feature of CIPN, responsible for several sensory symptoms, including pain, sensory loss and hypersensitivity to mechanical and/or cold stimuli in the hands and feet, neurophysiological assessments remain the gold standard for clinical diagnosis of CIPN. Given the large impact of CIPN on cancer patients, there is increasing emphasis on biomarkers of adverse outcomes in safety assessment and translational research, to prevent permanent neuroaxonal damage. Since the results on reliable blood molecular markers for axonal degeneration are still controversial, here we provide a brief overview of blood molecular biomarkers used for assessing and/or predicting CIPN in preclinical and clinical settings.


Assuntos
Antineoplásicos , Biomarcadores/análise , Dor/tratamento farmacológico , Doenças do Sistema Nervoso Periférico/sangue , Animais , Antineoplásicos/efeitos adversos , Humanos , Neoplasias/induzido quimicamente , Neoplasias/tratamento farmacológico , Doenças do Sistema Nervoso Periférico/induzido quimicamente , Qualidade de Vida
6.
Eur J Neurol ; 28(2): 620-629, 2021 02.
Artigo em Inglês | MEDLINE | ID: mdl-32959475

RESUMO

BACKGROUND AND PURPOSE: The aim was to identify the clinical and diagnostic investigations that may help to support a diagnosis of chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) in patients not fulfilling the European Federation of Neurological Societies and Peripheral Nerve Society (EFNS/PNS) electrodiagnostic criteria. METHODS: The data from patients with a clinical diagnosis of CIDP included in a national database were retrospectively reviewed. RESULTS: In all, 535 patients with a diagnosis of CIDP were included. This diagnosis fulfilled the EFNS/PNS criteria in 468 patients (87.2%) (definite in 430, probable in 33, possible in three, while two had chronic immune sensory polyradiculopathy). Sixty-seven patients had a medical history and clinical signs compatible with CIDP but electrodiagnostic studies did not fulfill the EFNS/PNS criteria for CIDP. These patients had similar clinical features and frequency of abnormal supportive criteria for the diagnosis of CIDP compared to patients fulfilling EFNS/PNS criteria. Two or more abnormal supportive criteria were present in 40 (61.2%) patients rising to 54 (80.6%) if a history of a relapsing course as a possible supportive criterion was also included. Increased cerebrospinal fluid proteins and response to immune therapy most frequently helped in supporting the diagnosis of CIDP. Response to therapy was similarly frequent in patients fulfilling or not EFNS/PNS criteria (87.3% vs. 85.9%). CONCLUSIONS: Patients with a clinical diagnosis of CIDP had similar clinical findings, frequency of abnormal supportive criteria and response to therapy compared to patients fulfilling EFNS/PNS criteria. The presence of abnormal supportive criteria may help in supporting the diagnosis of CIDP in patients with a medical history and clinical signs compatible with this diagnosis but non-diagnostic nerve conduction studies.


Assuntos
Polirradiculoneuropatia Desmielinizante Inflamatória Crônica , Bases de Dados Factuais , Humanos , Condução Nervosa , Nervos Periféricos , Polirradiculoneuropatia Desmielinizante Inflamatória Crônica/diagnóstico , Estudos Retrospectivos
7.
J Endocrinol Invest ; 44(6): 1263-1273, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32951160

RESUMO

PURPOSE: Post-finasteride syndrome (PFS) has been reported in a subset of patients treated with finasteride (an inhibitor of the enzyme 5alpha-reductase) for androgenetic alopecia. These patients showed, despite the suspension of the treatment, a variety of persistent symptoms, like sexual dysfunction and cognitive and psychological disorders, including depression. A growing body of literature highlights the relevance of the gut microbiota-brain axis in human health and disease. For instance, alterations in gut microbiota composition have been reported in patients with major depressive disorder. Therefore, we have here analyzed the gut microbiota composition in PFS patients in comparison with a healthy cohort. METHODS: Fecal microbiota of 23 PFS patients was analyzed by 16S rRNA gene sequencing and compared with that reported in ten healthy male subjects. RESULTS: Sexual dysfunction, psychological and cognitive complaints, muscular problems, and physical alterations symptoms were reported in more than half of the PFS patients at the moment of sample collection. The quality sequence check revealed a low library depth for two fecal samples. Therefore, the gut microbiota analyses were conducted on 21 patients. The α-diversity was significantly lower in PFS group, showing a reduction of richness and diversity of gut microbiota structure. Moreover, when visualizing ß-diversity, a clustering effect was found in the gut microbiota of a subset of PFS subjects, which was also characterized by a reduction in Faecalibacterium spp. and Ruminococcaceae UCG-005, while Alloprevotella and Odoribacter spp were increased compared to healthy control. CONCLUSION: Gut microbiota population is altered in PFS patients, suggesting that it might represent a diagnostic marker and a possible therapeutic target for this syndrome.


Assuntos
Alopecia/tratamento farmacológico , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos , Finasterida , Microbioma Gastrointestinal , RNA Ribossômico 16S/isolamento & purificação , Inibidores de 5-alfa Redutase/administração & dosagem , Inibidores de 5-alfa Redutase/efeitos adversos , Biodiversidade , Disfunção Cognitiva/induzido quimicamente , Disfunção Cognitiva/diagnóstico , Correlação de Dados , Depressão/induzido quimicamente , Depressão/diagnóstico , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/diagnóstico , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/etiologia , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/fisiopatologia , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/psicologia , Finasterida/administração & dosagem , Finasterida/efeitos adversos , Microbioma Gastrointestinal/efeitos dos fármacos , Microbioma Gastrointestinal/fisiologia , Humanos , Masculino , Pessoa de Meia-Idade , Desempenho Físico Funcional , Análise de Sequência de DNA/métodos , Disfunções Sexuais Fisiológicas/induzido quimicamente , Disfunções Sexuais Fisiológicas/diagnóstico
9.
J Steroid Biochem Mol Biol ; 199: 105596, 2020 05.
Artigo em Inglês | MEDLINE | ID: mdl-31958635

RESUMO

Neuroactive steroids, molecules produced from cholesterol in steroidogenic cells (i.e., peripheral glands and nervous system) are physiological modulators and protective agents of nervous function. A possible role for neuroactive steroids in the sex-dimorphic clinical manifestation, onset and progression of Multiple Sclerosis (MS) has been recently suggested. To explore this possibility, we assessed the synthesis of the first steroidogenic product (pregnenolone; PREG) in the spinal cord of experimental autoimmune encephalomyelitis rats, a MS model. Data obtained indicate that the synthesis of PREG in the spinal cord is altered by the pathology in a sex-dimorphic way and depending on the pathological progression. Indeed, in male spinal cord the synthesis was already decreased at the acute phase of the disease (i.e., 14 days post induction - dpi) and maintained low during the chronic phase (i.e., 45 dpi), while in females this effect was observed only at the chronic phase. Substrate availability had also a role in the sex-dimorphic kinetics. Indeed, at the chronic phase, male animals showed a reduction in the levels of free cholesterol coupled to alteration of cholesterol metabolism into oxysterols; these effects were not observed in female animals. These findings suggest that the comprehension of the neurosteroidogenic processes could be relevant to better understand the sexual dimorphism of MS and to possibly design sex-oriented therapeutic strategies based on neuroactive steroids.


Assuntos
Encefalomielite Autoimune Experimental/metabolismo , Esclerose Múltipla/metabolismo , Pregnenolona/metabolismo , Medula Espinal/metabolismo , Animais , Colesterol/biossíntese , Colesterol/metabolismo , Modelos Animais de Doenças , Encefalomielite Autoimune Experimental/genética , Encefalomielite Autoimune Experimental/patologia , Feminino , Humanos , Cinética , Masculino , Esclerose Múltipla/genética , Esclerose Múltipla/patologia , Neuroesteroides/metabolismo , Pregnenolona/biossíntese , Ratos , Caracteres Sexuais , Medula Espinal/patologia , Especificidade por Substrato
10.
Eur J Neurol ; 27(1): 136-143, 2020 01.
Artigo em Inglês | MEDLINE | ID: mdl-31325350

RESUMO

BACKGROUND AND PURPOSE: The role of lifestyle and dietary habits and antecedent events has not been clearly identified in chronic inflammatory demyelinating polyradiculoneuropathy (CIDP). METHODS: Information was collected about modifiable environmental factors and antecedent infections and vaccinations in patients with CIDP included in an Italian CIDP Database. Only patients who reported not having changed their diet or the lifestyle habits investigated in the study after the appearance of CIDP were included. The partners of patients with CIDP were chosen as controls. Gender-matched analysis was performed with randomly selected controls with a 1:1 ratio of patients and controls. RESULTS: Dietary and lifestyle data of 323 patients and 266 controls were available. A total of 195 cases and 195 sex-matched controls were used in the analysis. Patients eating rice at least three times per week or eating fish at least once per week appeared to be at decreased risk of acquiring CIDP. Data on antecedent events were collected in 411 patients. Antecedent events within 1-42 days before CIDP onset were reported by 15.5% of the patients, including infections in 12% and vaccinations in 1.5%. Patients with CIDP and antecedent infections more often had an acute onset of CIDP and cranial nerve involvement than those without these antecedent events. CONCLUSIONS: The results of this preliminary study seem to indicate that some dietary habits may influence the risk of CIDP and that antecedent infections may have an impact on the onset and clinical presentation of the disease.


Assuntos
Comportamento Alimentar , Estilo de Vida , Polirradiculoneuropatia Desmielinizante Inflamatória Crônica/epidemiologia , Adulto , Criança , Bases de Dados Factuais , Feminino , Humanos , Infecções/complicações , Itália/epidemiologia , Masculino , Pessoa de Meia-Idade , Fatores de Risco
11.
J Control Release ; 249: 103-110, 2017 03 10.
Artigo em Inglês | MEDLINE | ID: mdl-28153761

RESUMO

Solid lipid nanoparticles (SLN) are colloidal drug delivery systems characterized by higher entrapment efficiency, good scalability of the preparation process and increased sustained prolonged release of the payload compared to other nanocarriers. The possibility to functionalize the surface of SLN with ligands to achieve a site specific targeting makes them attractive to overcome the limited blood-brain barrier (BBB) penetration of therapeutic compounds. SLN are prepared for brain targeting by exploiting the adaptability of warm microemulsion process for the covalent surface modification with an Apolipoprotein E-derived peptide (SLN-mApoE). Furthermore, the influence of the administration route on SLN-mApoE brain bioavailability is here evaluated. SLN-mApoE are able to cross intact a BBB in vitro model. The pulmonary administration of SLN-mApoE is related to a higher confinement in the brain of Balb/c mice compared to the intravenous and intraperitoneal administration routes, without inducing any acute inflammatory reaction in the lungs. These results promote the pulmonary administration of brain-targeted SLN as a feasible strategy for improving brain delivery of therapeutics.


Assuntos
Apolipoproteínas E/metabolismo , Barreira Hematoencefálica/metabolismo , Portadores de Fármacos/metabolismo , Sistemas de Liberação de Medicamentos , Nanopartículas/metabolismo , Animais , Apolipoproteínas E/química , Apolipoproteínas E/farmacocinética , Células 3T3 BALB , Permeabilidade Capilar , Linhagem Celular , Portadores de Fármacos/química , Portadores de Fármacos/farmacocinética , Metabolismo dos Lipídeos , Lipídeos/química , Lipídeos/farmacocinética , Masculino , Camundongos , Nanopartículas/química , Propriedades de Superfície
12.
J Biol Regul Homeost Agents ; 29(1): 115-24, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25864747

RESUMO

The proteasome inhibitor bortezomib is an antineoplastic drug mainly used for the treatment of multiple myeloma (MM). Despite its effectiveness, bortezomib clinical use is often limited by the onset of peripheral neuropathy (BiPN). To better understand the mechanisms of BiPN several rat and mice models have been proposed, but no studies in MM-bearing animals allowing to test the antitumor activity of the selected schedules and the role of MM by itself in peripheral nervous system damage have been reported to date. Here, we carried out a study using immunodeficient C.B-17/Prkdcscid (SCID) mice injected with RPMI8266 human MM cells and treated with bortezomib 1 mg/kg once a week for five weeks. Animals were assessed with neurophysiological, behavioral and pathological methods and tumor volume measurement was performed along the study. At the end of the study BiPN was evident in bortezomib-treated animals, and this neurotoxic effect was evident using a schedule able to effectively prevent tumor growth. However, neurophysiological and pathological evidence of MM induced peripheral nervous system damage was also reported. This model based on MM-bearing animals is more reliable in the reproduction of the clinical setting and it is, therefore, more suitable than the previously reported models of BiPN to study its pathogenesis. Moreover, it represents an optimal model to test the efficacy of neuroprotective agents and at the same time their non-interference with bortezomib antineoplastic activity.


Assuntos
Antineoplásicos/efeitos adversos , Ácidos Borônicos/efeitos adversos , Mieloma Múltiplo/tratamento farmacológico , Doenças do Sistema Nervoso Periférico/induzido quimicamente , Pirazinas/efeitos adversos , Animais , Bortezomib , Modelos Animais de Doenças , Humanos , Camundongos SCID , Mieloma Múltiplo/patologia , Ensaios Antitumorais Modelo de Xenoenxerto
13.
Methods Mol Biol ; 1175: 301-22, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25150874

RESUMO

Pharmacogenomics has been establishing itself as a powerful tool to predict individual response to treatment, in order to personalize therapy management; this field has been explored in particular in Oncology. Not only efficacy on the malignant disease has been investigated, but also the possibility to predict adverse effects due to drug administration. Chemotherapy-Induced Neurotoxicity (CIPN) is one of those. This potentially severe and long-lasting/permanent side effect of commonly administered anticancer drugs can severely impair Quality of Life (QoL) in a large cohort of long survival patients. So far, a pharmacogenomics-based approach in CIPN regard has been quite delusive, making a methodological improvement warranted in this field of interest: even the most refined genetic analysis cannot be effective if not applied correctly. Here, we try to devise why it is so, suggesting how THE "bench-side" (Pharmacogenomics) might benefit from and should cooperate with THE "bed-side" (Clinimetrics), in order to make genetic profiling effective if applied to CIPN.


Assuntos
Antineoplásicos/efeitos adversos , Gerenciamento Clínico , Doenças do Sistema Nervoso Periférico/etiologia , Farmacogenética , Medicina de Precisão , Glutationa S-Transferase pi/genética , Glutationa S-Transferase pi/metabolismo , Humanos , Doenças do Sistema Nervoso Periférico/diagnóstico , Doenças do Sistema Nervoso Periférico/terapia , Polimorfismo Genético , Qualidade de Vida
14.
Biomed Res Int ; 2014: 180428, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24877063

RESUMO

To investigate neurochemical changes associated with bortezomib-induced painful peripheral neuropathy (PN), we examined the effects of a single-dose intravenous administration of bortezomib and a well-established "chronic" schedule in a rat model of bortezomib-induced PN. The TRPV1 channel and sensory neuropeptides CGRP and substance P (SP) were studied in L4-L5 dorsal root ganglia (DRGs), spinal cord, and sciatic nerve. Behavioral measures, performed at the end of the chronic bortezomib treatment, confirmed a reduction of mechanical nociceptive threshold, whereas no difference occurred in thermal withdrawal latency. Western blot analysis showed a relative increase of TRPV1 in DRG and spinal cord after both acute and chronic bortezomib administration. Reverse transcriptase-polymerase chain reaction revealed a decrease of TRPV1 and CGRP mRNA relative levels after chronic treatment. Immunohistochemistry showed that in the DRGs, TRPV1-, CGRP-, and SP-immunoreactive neurons were mostly small- and medium-sized and the proportion of TRPV1- and CGRP-labeled neurons increased after treatment. A bortezomib-induced increase in density of TRPV1- and CGRP-immunoreactive innervation in the dorsal horn was also observed. Our findings show that bortezomib-treatment selectively affects subsets of DRG neurons likely involved in the processing of nociceptive stimuli and that neurochemical changes may contribute to development and persistence of pain in bortezomib-induced PN.


Assuntos
Comportamento Animal/efeitos dos fármacos , Ácidos Borônicos/efeitos adversos , Peptídeo Relacionado com Gene de Calcitonina/biossíntese , Gânglios Espinais/metabolismo , Regulação da Expressão Gênica/efeitos dos fármacos , Proteínas do Tecido Nervoso/biossíntese , Doenças do Sistema Nervoso Periférico/metabolismo , Pirazinas/efeitos adversos , Nervo Isquiático/metabolismo , Medula Espinal/metabolismo , Substância P/biossíntese , Canais de Cátion TRPV/biossíntese , Animais , Ácidos Borônicos/farmacologia , Bortezomib , Modelos Animais de Doenças , Feminino , Gânglios Espinais/patologia , Nociceptividade/efeitos dos fármacos , Doenças do Sistema Nervoso Periférico/induzido quimicamente , Doenças do Sistema Nervoso Periférico/patologia , Pirazinas/farmacologia , Ratos , Ratos Wistar , Nervo Isquiático/patologia , Medula Espinal/patologia
15.
Curr Med Chem ; 21(20): 2237-65, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24533815

RESUMO

Conventional chemotherapy and radiation treatment are two cornerstones of cancer treatment but efforts are required to improve their "therapeutic window". The development of metal complexes, including platinum, has had an enormous impact on current cancer chemotherapy. However, these chemotherapeutic drugs can be employed only in the management of a limited number of cancers and, furthermore, their use causes significant side effects. Research over the past 10 years has produced new complexes containing heavy atoms other than platinum, such as iron, cobalt, or gold, which have been used in phase I and phase II trials. Recent preclinical research has shown promising results also using titanium, ruthenium, copper and silver. The anticancer activity of metal-based compounds and nanoparticles (gold and gadolinium in particular) is presently under evaluation in several laboratories in combination with or without X-ray therapy. In fact, if present in sufficiently high concentrations in the tumors, metals can act as a radiotherapy adjuvant: they possess an increased capability to absorb the X-ray radiation with respect to the water-based tissues. Low energy electrons will be then released close to the metal and, therefore, determine a local dose enhancement. This review will focus on the anticancer properties of new drugs and on the rationale for testing their usefulness in combined treatment.


Assuntos
Antineoplásicos/uso terapêutico , Quimiorradioterapia , Metais/uso terapêutico , Neoplasias/terapia , Animais , Antineoplásicos/química , Humanos , Metais/química
16.
Ann Oncol ; 25(1): 257-64, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-24256846

RESUMO

BACKGROUND: The different perception and assessment of chemotherapy-induced peripheral neurotoxicity (CIPN) between healthcare providers and patients has not yet been fully addressed, although these two approaches might eventually lead to inconsistent, possibly conflicting interpretation, especially regarding sensory impairment. PATIENTS AND METHODS: A cohort of 281 subjects with stable CIPN was evaluated with the National Cancer Institute-Common Toxicity Criteria (NCI-CTC v. 2.0) sensory scale, the clinical Total Neuropathy Score (TNSc©), the modified Inflammatory Neuropathy Cause and Treatment (INCAT) sensory sumscore (mISS) and the European Organization for Research and Treatment of Cancer CIPN specific self-report questionnaire (EORTC QOL-CIPN20). RESULTS: Patients' probability estimates showed that the EORTC QLQ-CIPN20 sensory score was overall more highly related to the NCI-CTC sensory score. However, the vibration perception item of the TNSc had a higher probability to be scored 0 for EORTC QLQ-CIPN20 scores lower than 35, as vibration score 2 for EORTC QLQ-CIPN20 scores between 35 and 50 and as grade 3 or 4 for EORTC QLQ-CIPN20 scores higher than 50. The linear models showed a significant trend between each mISS item and increasing EORTC QLQ-CIPN20 sensory scores. CONCLUSION: None of the clinical items had a perfect relationship with patients' perception, and most of the discrepancies stood in the intermediate levels of CIPN severity. Our data indicate that to achieve a comprehensive knowledge of CIPN including a reliable assessment of both the severity and the quality of CIPN-related sensory impairment, clinical and PRO measures should be always combined.


Assuntos
Antineoplásicos/efeitos adversos , Avaliação de Resultados da Assistência ao Paciente , Doenças do Sistema Nervoso Periférico/induzido quimicamente , Adulto , Idoso , Idoso de 80 Anos ou mais , Antineoplásicos/uso terapêutico , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias/tratamento farmacológico , Doenças do Sistema Nervoso Periférico/patologia , Qualidade de Vida , Autorrelato , Resultado do Tratamento
17.
J Biol Regul Homeost Agents ; 27(2): 477-85, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23830397

RESUMO

Cisplatin is an antineoplastic drug widely used for the treatment of several solid tumours. However, the side effects related to cisplatin-based anticancer therapy often outweigh the benefits. Therefore, the identification of new anticancer strategies able to offer a better toxicity profile while maintaining the same level of efficacy as platinum-based treatments would be highly desirable. We assessed the efficacy of synchrotron radiation in triggering the Auger effect in human A549 non-small cell lung cancer and IGROV-1 ovarian cancer cells pre-treated with cisplatin. Cisplatin was chosen as the carrier of platinum atoms in the cells because of its alkylating-like activity and the irradiation was done with monochromatic beams above and below the platinum K-shell edge (78.39 keV). On cisplatin-treated cells, at concentrations allowing 80 percent of cell survival with respect to controls, no differences were observed in cell viability when they were irradiated either above or below the K-shell edge of platinum, suggesting that cisplatin toxicity can mask the enhancement of cell death induced by the irradiation. At lower cisplatin concentrations allowing 95-90 percent of cell survival, an enhancement in cellular death with respect to conventional irradiation conditions was clearly observed in all cancer types when cells were irradiated with beams either above or below the platinum K-shell edge. Our results lend additional support to the suggestion that the Photon Activation Therapy in combination with cisplatin treatment should be further explored in relevant in vivo models of glioma and non-glioma cancer models.


Assuntos
Antineoplásicos/farmacologia , Cisplatino/farmacologia , Neoplasias/terapia , Fótons/uso terapêutico , Terapia por Raios X , Linhagem Celular Tumoral , Terapia Combinada , Humanos , Síncrotrons
18.
Curr Med Chem ; 20(20): 2589-600, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23627934

RESUMO

Mesoporous silica materials (MSM) have been proposed as promising tools for cell specific drug delivery or fluorescent cell tracking. In cancer therapy there is an urgent need to develop a cancer cell specific drug carrier able to limit the non-specific uptake of the drug by normal cells thereby reducing serious side effects. Chemotherapy induced peripheral neurotoxicity (CIPN) is one of the most clinically relevant side effects linked to the use of several antineoplastic drugs. In this study we showed that the uptake of MSM (synthesized using a PEG surfactant-based interfacial synthesis procedure), functionalised with folic acid (MSM-FOL) after 1, 6 and 24 hours is very limited in neuronal-like cellular systems such as differentiated SH-SY5Y human neuroblastoma cells and rat embryonic dorsal root ganglia sensory neurons. By contrast, the nanoparticles are highly internalized in A549 and IGROV-1 cancer cells. The 6 hour-treatment of A549 and IGROV-1 cells with nanoparticles loaded with the antineoplastic drug cisplatin (CP) induced significant cytotoxicity with respect to CP alone. These results were observed treating IGROV-1 cells with 25 and 50 µg/ml nanoparticles doses (corresponding respectively to CP 6.25 and 12.5 µM) and treating A549 with 50 µg/ml.Our results demonstrated a selective uptake of functionalized MSM suggesting them as promising tools for targeted antineoplastic therapy. Further studies will be necessary in order to confirm if this approach may be useful in reducing neurotocity of anticancer drugs.


Assuntos
Nanopartículas/química , Dióxido de Silício/química , Animais , Antineoplásicos/química , Antineoplásicos/farmacologia , Sobrevivência Celular/efeitos dos fármacos , Células Cultivadas , Cisplatino/química , Cisplatino/farmacologia , Portadores de Fármacos/química , Fluoresceína-5-Isotiocianato/química , Receptor 1 de Folato/genética , Receptor 1 de Folato/metabolismo , Gânglios Espinais/citologia , Humanos , Microscopia Confocal , Nanopartículas/toxicidade , Neurônios/citologia , Neurônios/efeitos dos fármacos , Neurônios/metabolismo , Porosidade , Ratos , Ratos Sprague-Dawley
19.
Eur J Cancer ; 49(13): 2910-8, 2013 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-23668917

RESUMO

Chemotherapy-induced peripheral neuropathy (CIPN) is a common neurological side-effect of cancer treatment and may lead to declines in patients' daily functioning and quality of life. To date, there are no modern clinimetrically well-evaluated outcome measures available to assess disability in CIPN patients. The objective of the study was to develop an interval-weighted scale to capture activity limitations and participation restrictions in CIPN patients using the Rasch methodology and to determine its validity and reliability properties. A preliminary Rasch-built Overall Disability Scale (pre-R-ODS) comprising 146 items was assessed twice (interval: 2-3 weeks; test-retest reliability) in 281 CIPN patients with a stable clinical condition. The obtained data were subjected to Rasch analyses to determine whether model expectations would be met, and if necessarily, adaptations were made to obtain proper model fit (internal validity). External validity was obtained by correlating the CIPN-R-ODS with the National Cancer Institute-Common Toxicity Criteria (NCI-CTC) neuropathy scales and the Pain-Intensity Numeric-Rating-Scale (PI-NRS). The preliminary R-ODS did not meet Rasch model's expectations. Items displaying misfit statistics, disordered thresholds, item bias or local dependency were systematically removed. The final CIPN-R-ODS consisting of 28 items fulfilled all the model's expectations with proper validity and reliability, and was unidimensional. The final CIPN-R-ODS is a Rasch-built disease-specific, interval measure suitable to detect disability in CIPN patients and bypasses the shortcomings of classical test theory ordinal-based measures. Its use is recommended in future clinical trials in CIPN.


Assuntos
Antineoplásicos/efeitos adversos , Avaliação da Deficiência , Doenças do Sistema Nervoso Periférico/induzido quimicamente , Doenças do Sistema Nervoso Periférico/diagnóstico , Inquéritos e Questionários , Atividades Cotidianas , Adulto , Idoso , Idoso de 80 Anos ou mais , Distribuição de Qui-Quadrado , Consenso , Europa (Continente) , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Medição da Dor , Doenças do Sistema Nervoso Periférico/fisiopatologia , Doenças do Sistema Nervoso Periférico/psicologia , Valor Preditivo dos Testes , Qualidade de Vida , Reprodutibilidade dos Testes , Índice de Gravidade de Doença
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