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1.
Neuropathol Appl Neurobiol ; 46(2): 160-170, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-31125471

RESUMO

AIMS: The crucial step in the pathogenic events that lead to the development and the progression of multiple sclerosis (MS) is the infiltration of autoreactive T cells in the brain. Data from experimental autoimmune encephalomyelitis (EAE) mice indicate that, together with microglia, T cells are responsible for the enhancement of the glutamatergic transmission in central neurons, contributing to glutamate-mediated excitotoxicity, a pathological hallmark of both EAE and MS brains. Here, we addressed the synaptic role of T cells taken from MS patients. METHODS: A chimeric model of human T cells and murine brain slices was established to record, by Patch Clamp technique, the glutamatergic transmission in the presence of T cells isolated from the peripheral blood of healthy subjects (HS), active (a) and nonactive (na) relapsing remitting MS patients. Intracellular staining and flow cytometry were used to assess tumour necrosis factor (TNF) expression in T cells. RESULTS: Chimeric experiments indicated that, compared to HS and naMS, T cells from aMS induced an increase in glutamatergic kinetic properties of striatal neurons. Such alteration, reminiscent of the those induced by EAE T cells, was blocked by incubation of the slices with etanercept, a TNF receptor antagonist. Of note, T cells from aMS expressed more TNF than naMS patients and HS subjects. CONCLUSION: These data highlight the synaptotoxic potential retained by MS T cells, suggesting that during the inflammatory phase of the disease infiltrating T cells could influence the neuronal activity contributing to the TNF-mediated mechanisms of glutamate excitotoxicity in central neurons.


Assuntos
Encéfalo/fisiopatologia , Esclerose Múltipla/fisiopatologia , Neurônios/fisiologia , Sinapses/fisiologia , Linfócitos T/fisiologia , Adulto , Animais , Feminino , Ácido Glutâmico/fisiologia , Humanos , Masculino , Camundongos Endogâmicos C57BL , Transmissão Sináptica
2.
BJOG ; 126(1): 123-127, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-30230668

RESUMO

OBJECTIVE: Evaluating sexual function and quality of life (QoL) in patients treated with a modified Abbé-McIndoe technique using in vitro cultured autologous vaginal mucosa. DESIGN: Descriptive study. SETTING: Policlinico Umberto I, Sapienza University of Rome. POPULATION: From 2006 to 2016, 39 women affected by Mayer-Rokitansky-Küster-Hauser syndrome (MRKHS) underwent vaginoplasty at our centre using a modified Abbé-McIndoe technique with in vitro cultured autologous vaginal tissue. METHODS: For each patient, vaginal tissue was obtained by full-thickness biopsy of the vaginal vestibule. Following enzymatic dissociation, cells were cultured for 2-3 weeks before the transplant. MAIN OUTCOME MEASURES: Each patient completed two validated questionnaires to quantify sexual function and QoL: the Female Sexual Function Index (FSFI), administered at 12, 36, and 60 months, and the Psychological General Well Being Index (PGWBI) administered at 0, 6, and 36 months after surgery. RESULTS: Twelve months after surgery, 29 patients were engaging in regular sexual activity. The FSFI test results showed a satisfactory sexual function compared to the general population, with median values of 25.85 (range 4.6-30.5) at 12 months, 27.2 (range 4.4-33.6) at 36 months, and 29.6 (range 23.9-33.6) at 60 months. The PGWBI questionnaire showed a median score of 420.5 (range 108-540) before surgery, and 459 (range 252-533) at the 60-month follow-up. CONCLUSIONS: Vaginoplasty performed with the use of autologous vaginal tissue, besides ensuring a long-term satisfying sex life, helps in achieving an improvement in QoL that is maintained over time. TWEETABLE ABSTRACT: Vaginoplasty using in vitro vaginal tissue ensures a satisfactory sexual function and improves quality of life.


Assuntos
Transtornos 46, XX do Desenvolvimento Sexual/cirurgia , Anormalidades Congênitas/cirurgia , Procedimentos Cirúrgicos em Ginecologia/métodos , Ductos Paramesonéfricos/anormalidades , Procedimentos de Cirurgia Plástica/métodos , Qualidade de Vida , Vagina/cirurgia , Transtornos 46, XX do Desenvolvimento Sexual/psicologia , Adolescente , Anormalidades Congênitas/psicologia , Feminino , Humanos , Ductos Paramesonéfricos/cirurgia , Comportamento Sexual/fisiologia , Comportamento Sexual/psicologia , Inquéritos e Questionários , Transplante Autólogo , Resultado do Tratamento , Adulto Jovem
3.
G Chir ; 39(2): 114-117, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29694313

RESUMO

INTRODUCTION: Paget disease of the nipple in man is a very rare breast cancer, and there are not standard procedures or guidelines. In any cases, a Paget's disease could hide an invasive ductal breast cancer. CASE DESCRIPTION: We report the case of a 77-years old man affected by Alzheimer's disease, who presented to our attention because of an ulcerated palpable mass in the right nipple. A biopsy of the lesion showed "intra-epidermic proliferation of epitelioid cells, associated with linfo-plasmacellular infiltration of superficial dermis, compatible with Paget's disease (pTis)". We discussed the case in the multidisciplinary meeting and decided to subject the patient to surgery, so a right mastectomy plus sentinel lymph node biopsy (SLNB) were performed. Histo-pathological examination revealed "invasive ductal carcinoma of the breast, associated with a small component of in situ ductal carcinoma and Paget's disease of the nipple with superficial ulceration". Resection margins were free. Sentinel lymph node was negative. Biological features were as follows: ER 95%, PR 60%, Her-2/neu 1+, Ki-67 35%. The patient was discharged in the third post-operative day in good conditions. In the following weeks the patient's healing process was good and free of complications. CONCLUSIONS: Clinical recognition of Paget's disease is very important also in man, because it can be the alarm bell for an underlying invasive ductal breast cancer, often more aggressive than in woman.


Assuntos
Neoplasias da Mama Masculina/patologia , Estrogênios , Neoplasias Hormônio-Dependentes/patologia , Neoplasias Primárias Múltiplas/patologia , Mamilos/patologia , Doença de Paget Mamária/patologia , Progesterona , Idoso , Doença de Alzheimer/complicações , Antineoplásicos Hormonais/uso terapêutico , Neoplasias da Mama Masculina/complicações , Neoplasias da Mama Masculina/tratamento farmacológico , Neoplasias da Mama Masculina/cirurgia , Carcinoma Ductal de Mama/patologia , Carcinoma Ductal de Mama/cirurgia , Carcinoma Intraductal não Infiltrante/patologia , Carcinoma Intraductal não Infiltrante/cirurgia , Terapia Combinada , Humanos , Masculino , Mastectomia , Neoplasias Hormônio-Dependentes/complicações , Neoplasias Hormônio-Dependentes/tratamento farmacológico , Neoplasias Hormônio-Dependentes/cirurgia , Neoplasias Primárias Múltiplas/cirurgia , Doença de Paget Mamária/complicações , Doença de Paget Mamária/etiologia , Doença de Paget Mamária/cirurgia , Úlcera Cutânea/etiologia , Tamoxifeno/uso terapêutico
4.
Crit Rev Oncol Hematol ; 125: 30-34, 2018 May.
Artigo em Inglês | MEDLINE | ID: mdl-29650273

RESUMO

OBJECTIVE: The use of dose-dense weekly chemotherapy in the management of advanced ovarian cancer (OC) remains controversial. The aim of this meta-analysis was to evaluate the efficacy of dose-dense regimen to improve clinical outcomes in OC patients with the inclusion of new trials. METHODS: For this updated meta-analysis, PubMed Medline and Scopus databases and meeting proceedings were searched for eligible studies with the limitation of randomized controlled trials, comparing dose-dense chemotherapy versus standard treatment. Trials were grouped in two types of dose-dense chemotherapy: weekly dose-dense (both paclitaxel and carboplatin weekly administration) and semi-weekly dose-dense (weekly paclitaxel and three weekly carboplatin administration). Data were extracted independently and were analyzed using RevMan statistical software version 5.3 (http://www.cochrane.org). Primary end-point was progression-free survival (PFS). RESULTS: Four randomized controlled trials comprising 3698 patients were identified as eligible. Dose-dense chemotherapy had not a significant benefit on PFS (HR 0.92, 95% CI 0.81-1.04, p = 0.20). When the analysis was restricted to both weekly and semi-weekly dose-dense data, a no significant interaction between dose-dense and standard regimen was confirmed (HR 1.01, 95% CI 0.93-1.10 and HR 0.82, 95% CI 0.63-1.08, respectively). CONCLUSIONS: In the absence of PFS superiority of dose-dense schedule, three weekly schedule should remain the standard of care for advanced OC.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Neoplasias Ovarianas/tratamento farmacológico , Ensaios Clínicos Controlados Aleatórios como Assunto/estatística & dados numéricos , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Carboplatina/administração & dosagem , Carboplatina/efeitos adversos , Progressão da Doença , Intervalo Livre de Doença , Relação Dose-Resposta a Droga , Esquema de Medicação , Feminino , Humanos , Neoplasias Ovarianas/epidemiologia , Neoplasias Ovarianas/patologia , Paclitaxel/administração & dosagem , Paclitaxel/efeitos adversos
5.
Sci Rep ; 7(1): 7363, 2017 08 04.
Artigo em Inglês | MEDLINE | ID: mdl-28779174

RESUMO

The N-palmitoylethanolamine (PEA) is an endogenous member of the endocannabinoid system (ECS) with several biological functions, including a neuromodulatory activity in the central nervous system. To shed light on the neuronal function of PEA, we investigated its involvement in the control of both excitatory and inhibitory transmission in the murine striatum, a brain region strongly modulated by the ECS. By means of electrophysiological recordings, we showed that PEA modulates inhibitory synaptic transmission, through activation of GPR55 receptors, promoting a transient increase of GABAergic spontaneous inhibitory postsynaptic current (sIPSC) frequency. The subsequently rundown effect on sIPSC frequency was secondary to the delayed stimulation of presynaptic cannabinoid CB1 receptors (CB1Rs) by the endocannabinoid 2-AG, whose synthesis was stimulated by PEA on postsynaptic neurons. Our results indicate that PEA, acting on GPR55, enhances GABA transmission in the striatum, and triggers a parallel synthesis of 2-AG at the postsynaptic site, that in turn acts in a retrograde manner to inhibit GABA release through the stimulation of presynaptic CB1Rs. This electrophysiological study identifies a previously unrecognized function of PEA and of GPR55, demonstrating that GABAergic transmission is under the control of this compound and revealing that PEA modulates the release of the endocannabinoid 2-AG.


Assuntos
Corpo Estriado/fisiologia , Endocanabinoides/metabolismo , Transmissão Sináptica , Ácido gama-Aminobutírico/metabolismo , Amidas , Animais , Corpo Estriado/efeitos dos fármacos , Fenômenos Eletrofisiológicos/efeitos dos fármacos , Endocanabinoides/farmacologia , Etanolaminas/farmacologia , Feminino , Camundongos , Neurônios/metabolismo , Ácidos Palmíticos/farmacologia , Receptor CB1 de Canabinoide/metabolismo , Receptores de Canabinoides/metabolismo , Sinapses/metabolismo , Transmissão Sináptica/efeitos dos fármacos
6.
Cancer Treat Rev ; 42: 41-6, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26559739

RESUMO

For many decades, ovarian cancer (OC) has been one of the most common gynecological cancer. Despite advances in OC diagnosis and treatment, the risk of recurrence is ever present and approximately 85% of patients will experience relapse. Recurrent OC after first-line therapy is almost always incurable. Multiple novel therapies, including tyrosine-kinases inhibitors (TKI), have shown promising results, but their role needs to be clarified. In this review we describe the rationale and the clinical evidence regarding the use of TKI for the treatment of recurrent platinum-resistant OC patients.


Assuntos
Antineoplásicos/uso terapêutico , Carcinoma/tratamento farmacológico , Terapia de Alvo Molecular , Proteínas de Neoplasias/antagonistas & inibidores , Compostos Organoplatínicos/farmacologia , Neoplasias Ovarianas/tratamento farmacológico , Inibidores de Proteínas Quinases/uso terapêutico , Antineoplásicos/efeitos adversos , Antineoplásicos/farmacologia , Carcinoma/enzimologia , Carcinoma/secundário , Ensaios Clínicos Fase II como Assunto , Resistencia a Medicamentos Antineoplásicos/efeitos dos fármacos , Feminino , Humanos , Estudos Multicêntricos como Assunto , Compostos Organoplatínicos/uso terapêutico , Neoplasias Ovarianas/enzimologia , Neoplasias Peritoneais/tratamento farmacológico , Neoplasias Peritoneais/secundário , Inibidores de Proteínas Quinases/efeitos adversos , Inibidores de Proteínas Quinases/farmacologia , Ensaios Clínicos Controlados Aleatórios como Assunto , Recidiva , Resultado do Tratamento
8.
Cell Mol Biol (Noisy-le-grand) ; 61(6): 44-61, 2015 Oct 30.
Artigo em Inglês | MEDLINE | ID: mdl-26518896

RESUMO

Ovarian cancer is burdened by the highest mortality rate among gynecological cancers. Gold standard is represented by the association of platinum-taxane -based chemotherapy and radical surgery. Despite several adjustments occurred in cytotoxic drug in last decades, most patients continue to relapse, and no significant enhancement has been reached in the overall survival. The development of drug resistance and the recurrence of disease have prompted the investigations of other targets that can be used in the treatment of ovarian cancers. Among such targets, polyadenosine diphosphate-ribose polymerase (PARP) represents a novel way to target specific patways involved in tumor growth. PARP accelerates the reaction of the polyADP-ribosylation of proteins implicated in DNA repair. PARP inhibitors have shown activity in cancers with BRCA mutations, with other deficient DNA repair genes or signaling pathways that modulate DNA repair, or in association with DNA damaging agents not involved in DNA repair dysfunction. A number of inhibitors for PARP has been developed, and such drugs are under investigation in clinical trials to identify their impact in the treatment of ovarian cancers. This review aims to summarize the recent researches and clinical progress on PARP inhibitors as novel target agents in ovarian cancer.


Assuntos
Hidrocarbonetos Aromáticos com Pontes/uso terapêutico , Neoplasias Ovarianas/tratamento farmacológico , Inibidores de Poli(ADP-Ribose) Polimerases/uso terapêutico , Taxoides/uso terapêutico , Animais , Ensaios Clínicos como Assunto , Resistencia a Medicamentos Antineoplásicos , Feminino , Humanos , Neoplasias Ovarianas/cirurgia , Poli(ADP-Ribose) Polimerases/metabolismo
9.
Eur J Gynaecol Oncol ; 36(4): 447-51, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26390701

RESUMO

The purpose of this study was to test the accuracy of 1.5 Tesla magnetic resonance imaging (1.5T MRI) in the preoperative evaluation of axillary lymph nodes in patients with invasive breast cancer. The authors retrospectively analyzed 26 patients with invasive breast cancer who had undergone sentinel lymph node biopsy (SLNB) and/or axillary lymph node dissection (ALND). All patients had been submitted to preoperative contrast enhanced breast 1.5T MRI. On the basis of lymph nodes morphological and dynamic characteristics, lymph nodes were classified as "negative" (short axis < 5 mm), "borderline" (short axis > 5 mm, absence of a hilum) or "positive" (short axis > 5 mm, absence of a hilum and also other suspicious features). The authors compared 1.5T MRI results with the outcome of histological analysis performed according to the TNM criteria; sensitivity (SE), specificity (SP), positive predictive value (PPV), and negative predictive value (NPV) of 1.5T MRI were evaluated. Considering only the lymph nodes "positive", 1.5 T MRI showed: SE 37.8%, SP 99.3%, FP 0.7%, PPV 92.5%, and NPV 88.1%. However, considering also "borderline", 1.5T MRI achieved: SE 75.7%, SP 99.3%, FP 0.7%, PPV 96.1%, and NPV was 95%. Contrast enhanced breast 1.5T MRI is not yet a valid alternative to histological analysis but it is a valid tool for a preoperative study of the topography of axillary lymph nodes and has the potential to become a routine method for evaluating the metastatic lymph nodes before submission to ALND.


Assuntos
Neoplasias da Mama/patologia , Linfonodos/patologia , Axila , Neoplasias da Mama/diagnóstico , Feminino , Humanos , Excisão de Linfonodo , Imageamento por Ressonância Magnética , Estudos Retrospectivos
10.
Ann Surg Oncol ; 22(13): 4211-6, 2015 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25801357

RESUMO

BACKGROUND: The purpose of this study was to observe the role of secondary cytoreductive surgery in platinum-resistant recurrent ovarian cancer (OC) patients. METHODS: We collected data of patients affected by recurrent OC treated between 1995 and 2013. Inclusion criteria were: invasive epithelial OC histologically documented, cytoreductive surgery and platinum-based chemotherapy at first-line treatment with evidence of complete response to treatment, disease-free interval <6 months, and no concomitant neoplasia. Patients considered susceptible of cytoreductive surgery (group A) were compared with a historical series of patients with similar characteristics but not eligible for surgery (group B). RESULTS: Of 122 platinum-resistant patients, 18 met the inclusion criteria for the study and were enrolled. They were compared with a historical series of 18 patients not surgically treated with analogous clinical and pathological features. The most frequent sites of relapse included pelvic and aortic lymph nodes (39 %), peritoneum (33 %), bowel (28 %), and pelvis (22 %). A low rate of intraoperative and postoperative complications was reported. No deaths were recorded. Overall survival was significantly longer in cytoreductive group when compared with the control group (P = 0.035). Median overall survival was 44 months. Estimated 5-year overall survival rates were 57 versus 23.5 % for groups A and B, respectively. CONCLUSIONS: Surgery could represent a useful adjunct to chemotherapy in the management of platinum-resistant recurrent OC patients, carefully selected, in highly selected centers. Larger prospective trials are needed to further confirm our experience.


Assuntos
Adenocarcinoma de Células Claras/cirurgia , Adenocarcinoma Mucinoso/cirurgia , Cistadenocarcinoma Seroso/cirurgia , Procedimentos Cirúrgicos de Citorredução , Resistencia a Medicamentos Antineoplásicos , Neoplasias do Endométrio/cirurgia , Neoplasias Ovarianas/cirurgia , Adenocarcinoma de Células Claras/mortalidade , Adenocarcinoma de Células Claras/patologia , Adenocarcinoma Mucinoso/mortalidade , Adenocarcinoma Mucinoso/patologia , Adulto , Idoso , Cistadenocarcinoma Seroso/mortalidade , Cistadenocarcinoma Seroso/patologia , Neoplasias do Endométrio/mortalidade , Neoplasias do Endométrio/patologia , Feminino , Seguimentos , Humanos , Pessoa de Meia-Idade , Gradação de Tumores , Invasividade Neoplásica , Estadiamento de Neoplasias , Neoplasias Ovarianas/mortalidade , Neoplasias Ovarianas/patologia , Platina/farmacologia , Prognóstico , Estudos Retrospectivos , Taxa de Sobrevida
11.
Minerva Ginecol ; 67(6): 491-7, 2015 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25668506

RESUMO

AIM: Aim of the study was to evaluate the late-pregnancy and perinatal outcomes of patients with threatened miscarriage in the first trimester. METHODS: An observational cohort study was performed on 81 pregnant women. Subjects were divided into two groups: 1) no bleeding; 2) threatened miscarriage. Patients were followed up until delivery and each materno-fetal complication was registered. RESULTS: Threatened miscarriage was associated with increased risk of preterm delivery, placenta previa, pregnancy induced hypertension/preeclampsia (PE), low birth weight (LBW) and neonatal intensive care unit (NICU) admission. There were no significantly differences between the 2 groups with regard to preterm prelabour rupture of membranes (PPROM), CESAREAN section, retained placenta, perinatal death and intrauterine growth restriction (IUGR). About immediate neonatal outcomes, mean birth weights were lower (≈ 200 g) in the study group (group 2), while no significant difference in the APGAR score between the two groups was noted. CONCLUSION: Our study suggests that threatened miscarriage in the first trimester is correlated with an increased incidence of late-pregnancy and perinatal complications and, therefore, these pregnancies should be considered as high risk ones.


Assuntos
Ameaça de Aborto/epidemiologia , Complicações na Gravidez/epidemiologia , Resultado da Gravidez , Adulto , Peso ao Nascer , Estudos de Casos e Controles , Cesárea , Estudos de Coortes , Feminino , Ruptura Prematura de Membranas Fetais/epidemiologia , Seguimentos , Humanos , Recém-Nascido , Gravidez , Primeiro Trimestre da Gravidez , Adulto Jovem
13.
Eur J Gynaecol Oncol ; 35(4): 408-14, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25118482

RESUMO

AIM: The aim of the study was to evaluate whether the apparent diffusion coefficient (ADC) provided by 3.0 Tesla diffusion-weighted imaging (3T DWI) varies with the prognostic factors Ki67 and grading in invasive breast cancer. MATERIALS AND METHODS: Seventy-three patients with 75 invasive breast cancer lesions who had undergone 3.0 Tesla magnetic resonance imaging (MRI) for local staging were enrolled. All lesions were confirmed by histologic and immunohistochemical analysis. MRI included both dynamic contrast-enhanced and DWI sequences. ADC value was obtained for each lesion. Histologic tumor grade was established according to the Nottingham Grading System (NGS), while Ki67 expression was evaluated by MM1 clone IgG1 mouse anti-human monoclonal antibody. Patients were divided into the following groups: grade 1 (G1), grade 2 (G2), grade 1 plus grade 2 (G1+G2) and grade 3 (G3), and low Ki67 (< or = 14%), intermediate Ki67 (15%-30%), and high Ki67 (> or = 30%). ADC values were compared with the G and Ki67 groups. Statistical comparison was carried out using the Mann-Whitney U and the Kruskal-Wallis H test. RESULTS: ADC values were significantly higher in G3 than in G1+G2 tumors; no significant difference was observed when G1, G2, and G3 were compared. There was no statistically significant correlation between ADC values and Ki67 percentage (p > 0.05). DISCUSSION: ADC values obtained on 3T DWI correlate with low (G1+G2) and high-grade (G3) invasive breast carcinomas. CONCLUSION: ADC may be a helpful tool for identifying high-grade invasive breast carcinoma.


Assuntos
Neoplasias da Mama/patologia , Carcinoma Ductal de Mama/patologia , Carcinoma Lobular/patologia , Imagem de Difusão por Ressonância Magnética , Antígeno Ki-67/metabolismo , Adulto , Idoso , Idoso de 80 Anos ou mais , Neoplasias da Mama/metabolismo , Carcinoma Ductal de Mama/metabolismo , Carcinoma Lobular/metabolismo , Feminino , Humanos , Pessoa de Meia-Idade , Gradação de Tumores , Prognóstico , Estudos Retrospectivos
14.
Br J Pharmacol ; 168(2): 502-17, 2013 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-22924679

RESUMO

BACKGROUND AND PURPOSE: Glutamate transmission is dysregulated in both multiple sclerosis (MS) and experimental autoimmune encephalomyelitis (EAE), the animal model of MS. A characteristic of EAE is increased glutamate transmission associated with up-regulation of AMPA receptors. However, little is known about the role of NMDA receptors in the synaptic modifications induced by EAE. EXPERIMENTAL APPROACH: The contribution of NMDA receptors to the alterations of glutamate transmission and disease severity in EAE mice was assessed by means of neurophysiological, morphological, Western blot, metabolic and clinical score assessments. KEY RESULTS: In our EAE mice, there was an NMDA receptor-dependent increase of glutamate release, associated with marked activation of the astroglia. Presynaptic NMDA receptors became overactive during EAE, increasing synaptic glutamate release by a mechanism dependent on voltage-gated sodium channels. By means of NAD(P)H autofluorescence analysis, we also found that EAE has a glutamate and NMDA receptor-dependent dysfunction of mitochondrial activity, which is known to contribute to the neurodegenerative damage of MS and EAE. Furthermore, pharmacological blockade of NMDA receptors in vivo ameliorated both synaptic transmission defects and of the clinical disease course of EAE mice, while EAE induced in mice with a genetically enhanced NMDA receptor signalling had opposite effects. CONCLUSIONS AND IMPLICATIONS: Our data, showing both sensitization of NMDA receptors and their involvement in the progression of the EAE disease, supggest that pharmacological impairment of NMDA receptor signalling would be a component of a neuroprotection strategy in MS.


Assuntos
Encefalomielite Autoimune Experimental/fisiopatologia , Ácido Glutâmico/fisiologia , Receptores de N-Metil-D-Aspartato/fisiologia , Animais , Maleato de Dizocilpina/farmacologia , Encefalomielite Autoimune Experimental/metabolismo , Antagonistas de Aminoácidos Excitatórios/farmacologia , Potenciais Pós-Sinápticos Excitadores/efeitos dos fármacos , Feminino , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Mutantes , Receptores de N-Metil-D-Aspartato/antagonistas & inibidores , Sinapses/fisiologia , Canais de Sódio Disparados por Voltagem/fisiologia
15.
Br J Pharmacol ; 165(4): 861-9, 2012 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-21740406

RESUMO

BACKGROUND AND PURPOSE Alterations of glutamate-mediated synaptic transmission occur early during neuroinflammatory insults, and lead to degenerative neuronal damage in multiple sclerosis (MS) and also in experimental autoimmune encephalomyelitis (EAE), which is a murine model of MS. Fingolimod is an effective orally active agent for the treatment of MS, affecting lymphocyte invasion of the brain. However, it is still unclear if fingolimod can be neuroprotective in this disorder. EXPERIMENTAL APPROACH Using neurophysiological recordings and morphological evaluation of dendritic integrity, we evaluated the effects of oral fingolimod on the clinical score of EAE mice in order to determine whether the compound was associated with preservation of synaptic transmission. KEY RESULTS Oral fingolimod prevented and reversed the pre- and postsynaptic alterations of glutamate transmission in EAE mice. These effects were associated with a clear amelioration of the clinical deterioration seen in EAE mice, and with a significant inhibition of neuronal dendritic pathology. Fingolimod did not alter the spontaneous excitatory postsynaptic currents in control animals, suggesting that only the pathological processes behind the inflammation-induced defects in glutamate transmission were modulated by this compound. CONCLUSIONS AND IMPLICATIONS The beneficial effects of fingolimod on the clinical, synaptic and dendritic abnormalities of murine EAE might correlate with the neuroprotective actions of this agent, as observed in MS patients. LINKED ARTICLE This article is commented on by Gillingwater, pp. 858-860 of this issue. To view this commentary visit http://dx.doi.org/10.1111/j.1476-5381.2011.01612.x.


Assuntos
Encefalomielite Autoimune Experimental/fisiopatologia , Imunossupressores/farmacologia , Esclerose Múltipla/fisiopatologia , Propilenoglicóis/farmacologia , Esfingosina/análogos & derivados , Sinapses/efeitos dos fármacos , Animais , Espinhas Dendríticas/efeitos dos fármacos , Espinhas Dendríticas/patologia , Encefalomielite Autoimune Experimental/induzido quimicamente , Encefalomielite Autoimune Experimental/tratamento farmacológico , Encefalomielite Autoimune Experimental/patologia , Potenciais Pós-Sinápticos Excitadores/efeitos dos fármacos , Feminino , Cloridrato de Fingolimode , Ácido Glutâmico/fisiologia , Glicoproteínas , Imunossupressores/uso terapêutico , Camundongos , Camundongos Endogâmicos C57BL , Esclerose Múltipla/tratamento farmacológico , Esclerose Múltipla/patologia , Glicoproteína Mielina-Oligodendrócito , Fragmentos de Peptídeos , Propilenoglicóis/uso terapêutico , Esfingosina/farmacologia , Esfingosina/uso terapêutico , Sinapses/fisiologia , Transmissão Sináptica/efeitos dos fármacos
16.
Gynecol Oncol ; 122(2): 285-90, 2011 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-21555147

RESUMO

OBJECTIVES: To evaluate the feasibility, toxicity and activity of neoadjuvant chemotherapy (NACT) using cisplatin and topotecan in patients affected by locally advanced cervical cancer (IB2-IIIB). METHODS: Patients with histologically confirmed FIGO stage IB2-IIIB uterine cervical cancer were treated with topotecan 0.75 mg/m(2)/day (days 1-3) followed by cisplatin 75 mg/m(2) (day 1), every 21 days for three consecutive cycles. After the last cycle of chemotherapy, within 3 or 4 weeks, patients underwent radical surgery with lymph node dissection. RESULTS: In the years 2007-2010, 46 women were enrolled into the study. Hematologic toxicity was the most relevant side effect. Thirty-eight patients (82.6%) underwent radical surgery after neoadjuvant chemotherapy (NACT) and were assessable for pathologic responses; surgery was not performed in 8 (17.4%) non-responder patients or with progression disease. Objective pathological response was recorded in 34 patients (89.5%); 6 patients (15.8%) achieved a complete response (CR), 28 (73.7%) patients achieved a partial response (PR); stable disease (SD) occurred in 2 patients (5.3%) with IIA initial disease and progression disease (PD) was registered in 2 patients (5.3%) with IIIB initial disease. The cumulative 2-year progression free survival (PFS) and overall survival (OS) of the 46 enrolled patients in the study were 70% and 81%, respectively; the 2-year PFS and OS of the 38 operated patients were respectively 79% and 95%. CONCLUSIONS: The cisplatin-topotecan combination seems to be feasible and with an acceptable toxicity profile and a promising response rate for the treatment of locally advanced cervical cancer (LACC). Phase II and III studies are needed to compare this combination with other platinum-based chemotherapeutic associations.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Cisplatino/uso terapêutico , Topotecan/uso terapêutico , Neoplasias do Colo do Útero/tratamento farmacológico , Cisplatino/administração & dosagem , Cisplatino/efeitos adversos , Feminino , Humanos , Terapia Neoadjuvante , Estadiamento de Neoplasias , Estudos Prospectivos , Topotecan/administração & dosagem , Topotecan/efeitos adversos , Neoplasias do Colo do Útero/mortalidade , Neoplasias do Colo do Útero/patologia
17.
Neuroscience ; 167(3): 864-71, 2010 May 19.
Artigo em Inglês | MEDLINE | ID: mdl-20219639

RESUMO

The neurotransmitter acetylcholine (Ach) controls both excitatory and inhibitory synaptic transmission in the striatum. Here, we investigated the involvement of the endocannabinoid system in Ach-mediated inhibition of striatal GABA transmission, and the potential role of transient receptor potential vanilloid 1 (TRPV1) channels in the control of Ach-endocannabinoid coupling. We found that inhibition of Ach degradation and direct pharmacological stimulation of muscarinic M1 receptors reduced striatal inhibitory postsynaptic currents (IPSCs) through the stimulation of 2-arachidonoylglicerol (2AG) synthesis and the activation of cannabinoid CB1 receptors. The effects of M1 receptor activation on IPSCs were occlusive with those of metabotropic glutamate receptor 5 stimulation, and were prevented in the presence of capsaicin, agonist of TRPV1 channels. Elevation of anandamide (AEA) tone with URB597, a blocker of fatty acid amide hydrolase, mimicked the effects of capsaicin, indicating that endogenous AEA acts as an endovanilloid substance in the control of M1-dependent 2AG-mediated synaptic effects in the striatum. Accordingly, both capsaicin and URB597 effects were absent in mice lacking TRPV1 channels. Pharmacological interventions targeting AEA metabolism and TRPV1 channels might be considered alternative therapeutic routes in disorders of striatal cholinergic or endocannabinoid neurotransmission.


Assuntos
Acetilcolina/metabolismo , Ácidos Araquidônicos/metabolismo , Moduladores de Receptores de Canabinoides/metabolismo , Corpo Estriado/metabolismo , Glicerídeos/metabolismo , Transmissão Sináptica/fisiologia , Canais de Cátion TRPV/metabolismo , Amidoidrolases/antagonistas & inibidores , Amidoidrolases/metabolismo , Animais , Benzamidas/farmacologia , Capsaicina/farmacologia , Carbamatos/farmacologia , Corpo Estriado/efeitos dos fármacos , Endocanabinoides , Inibidores Enzimáticos/farmacologia , Potenciais Pós-Sinápticos Inibidores/efeitos dos fármacos , Potenciais Pós-Sinápticos Inibidores/fisiologia , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Knockout , Agonistas Muscarínicos/farmacologia , Inibição Neural/efeitos dos fármacos , Inibição Neural/fisiologia , Técnicas de Cultura de Órgãos , Alcamidas Poli-Insaturadas/metabolismo , Receptor de Glutamato Metabotrópico 5 , Receptor Muscarínico M1/agonistas , Receptor Muscarínico M1/metabolismo , Receptores de Glutamato Metabotrópico/agonistas , Receptores de Glutamato Metabotrópico/metabolismo , Fármacos do Sistema Sensorial/farmacologia , Transmissão Sináptica/efeitos dos fármacos , Canais de Cátion TRPV/efeitos dos fármacos , Ácido gama-Aminobutírico/metabolismo
18.
Eur J Neurol ; 16(3): 360-6, 2009 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-19364364

RESUMO

BACKGROUND AND PURPOSE: Central neuropathic pain (CNP) is a prevalent and distressing symptom in patients with multiple sclerosis (MS). The anticonvulsant levetiracetam (LEV) has been shown to be efficacious in some types of CNP, but its efficacy in MS-related CNP has not been confirmed. METHODS: To investigate the tolerability and potential effects of LEV against CNP in MS subjects, we performed a single-center, prospective, randomized, single-blind, placebo-controlled study in twenty patients with MS and CNP. Outcomes before and during the 3-month study were assessed using validated measures of pain, depression, disability and quality of life. RESULTS: The medication was well tolerated and analysis revealed a significant difference between the LEV and placebo arm in all study outcomes related to pain (mean pain intensity score, mean pain difference, percentage of patients with a clinically significant pain reduction). Furthermore, the individual quality of life rating improved in treated patients, showing a significant correlation with pain reduction. CONCLUSIONS: These findings suggest that further studies with larger samples of patients be carried out in order to confirm the efficacy of LEV in MS-related CNP population.


Assuntos
Analgésicos/uso terapêutico , Anticonvulsivantes/uso terapêutico , Esclerose Múltipla/tratamento farmacológico , Neuralgia/tratamento farmacológico , Piracetam/análogos & derivados , Adulto , Analgésicos/efeitos adversos , Anticonvulsivantes/efeitos adversos , Depressão/tratamento farmacológico , Avaliação da Deficiência , Feminino , Humanos , Levetiracetam , Masculino , Pessoa de Meia-Idade , Esclerose Múltipla/complicações , Esclerose Múltipla/fisiopatologia , Neuralgia/etiologia , Medição da Dor , Projetos Piloto , Piracetam/efeitos adversos , Piracetam/uso terapêutico , Qualidade de Vida , Inquéritos e Questionários , Resultado do Tratamento , Adulto Jovem
19.
Minerva Ginecol ; 61(1): 57-66, 2009 Feb.
Artigo em Italiano | MEDLINE | ID: mdl-19204662

RESUMO

Postoperative adhesions represent a common consequence in patients who underwent abdominal or pelvic surgery. Such adhesions can be asymptomatic, but they can cause complications such as chronic abdomino-pelvic pain, secondary infertility, an increase in bowel obstruction risk and more complexity for future surgery, including longer surgery times and an increase in morbidity. Normally, adhesions appear after offences against the peritoneum, causing flogosys, and develop both in new sites, previously not involved, and in sites already interested in adhesiolysis. Previous laparotomy is an important risk factor, as after laparatomy a minimum of 93% of patients present adhesions during a following surgery. Furthermore, the rate of recurrence after adhesiolysis is 85%. Among several strategies employed, valid prevention methods are: using minimally invasive surgery techniques, reducing the incision area, containing tissue dehydration during surgery and an accurate hemostasis. Also, for preventing and reducing adhesions, the usage of NSAIDs, fibrinolytics and anticoagulants, as well as the application of substances acting as a physical barrier, have been proposed. Recently, crystalloid solutions have been introduced, using the hydro-flotation principle for intraperitoneal organs. This research aims to analyze causes and epidemiology for postoperative adhesions, with particular regard to gynecological operations and to describe and compare the means available to prevent them.


Assuntos
Procedimentos Cirúrgicos em Ginecologia/efeitos adversos , Aderências Teciduais/prevenção & controle , Dor Abdominal/etiologia , Anti-Inflamatórios não Esteroides/uso terapêutico , Anticoagulantes/uso terapêutico , Procedimentos Cirúrgicos do Sistema Digestório/efeitos adversos , Quimioterapia Combinada , Feminino , Fibrinolíticos/uso terapêutico , Humanos , Itália , Laparoscopia/efeitos adversos , Laparoscopia/métodos , Cristais Líquidos , Dor Pélvica/etiologia , Fatores de Risco , Prevenção Secundária , Aderências Teciduais/epidemiologia , Resultado do Tratamento
20.
Minerva Ginecol ; 60(6): 543-50, 2008 Dec.
Artigo em Italiano | MEDLINE | ID: mdl-18981980

RESUMO

Urinary incontinence consist in voluntary urine leakage. Female affected in the world are about 200 thousand. Urinary incontinence affect severely women quality of life. There are different kinds of urinary incontinence that can be treated in different ways. We can use pelvic floor rehabilitation, drug therapy, invasive and non-invasive surgical treatment. Different treatments are used for different incontinence types. Periurethral injection is the most common procedure between non-invasive surgery. The most recent bulking agents occasionally determine severe adverse reaction or complication. Frequently we can have just pain during injection and a temporary urine retention. During the latest years we used a lot of bulking agents: bovine collagen, autologous fat, carbon particles, macroplastique, calcium hydroxylapatite, ethylene vinyl alcohol copolymer, dextranomer. Urethral injection have success in 40-90%. We can assert that macroplastique is the most efficacy and safe on the basis of literature data and of our experience data. This surgical procedure, in fact, has good percentage of success in accurately selected patients. In our experience Macroplastique can also be used in oncological patients, in elderly women, in patients with important comorbidity and with high surgical risk with good objective and subjective results.


Assuntos
Materiais Biocompatíveis/administração & dosagem , Incontinência Urinária/terapia , Colágeno/administração & dosagem , Dextranos/administração & dosagem , Durapatita/administração & dosagem , Feminino , Humanos , Injeções , Seleção de Pacientes , Polivinil/administração & dosagem , Qualidade de Vida , Resultado do Tratamento , Uretra , Incontinência Urinária/diagnóstico , Incontinência Urinária/reabilitação
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