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1.
Proc Natl Acad Sci U S A ; 118(44)2021 11 02.
Artigo em Inglês | MEDLINE | ID: mdl-34716272

RESUMO

Actions with identical goals can be executed in different ways (gentle, rude, vigorous, etc.), which D. N. Stern called vitality forms [D. N. Stern, Forms of Vitality Exploring Dynamic Experience in Psychology, Arts, Psychotherapy, and Development (2010)]. Vitality forms express the agent's attitudes toward others. In a series of fMRI studies, we found that the dorso-central insula (DCI) is the region that is selectively active during both vitality form observation and execution. In one previous experiment, however, the middle cingulate gyrus also exhibited activation. In the present study, in order to assess the role of the cingulate cortex in vitality form processing, we adopted a classical vitality form paradigm, but making the control condition devoid of vitality forms using jerky movements. Participants performed two different tasks: Observation of actions performed gently or rudely and execution of the same actions. The results showed that in addition to the insula, the middle cingulate cortex (MCC) was strongly activated during both action observation and execution. Using a voxel-based analysis, voxels showing a similar trend of the blood-oxygen-level-dependent (BOLD) signal in both action observation and execution were found in the DCI and in the MCC. Finally, using a multifiber tractography analysis, we showed that the active sites in MCC and DCI are reciprocally connected.


Assuntos
Comportamento/fisiologia , Giro do Cíngulo/fisiologia , Córtex Insular/fisiologia , Adulto , Atitude , Encéfalo/fisiologia , Mapeamento Encefálico/métodos , Córtex Cerebral/fisiologia , Feminino , Humanos , Imageamento por Ressonância Magnética/métodos , Masculino
2.
BMC Nephrol ; 24(1): 117, 2023 04 28.
Artigo em Inglês | MEDLINE | ID: mdl-37118685

RESUMO

BACKGROUND: Kidney transplantation is the gold-standard treatment for patients with kidney failure. However, one-third of patients awaiting a kidney transplant are highly sensitized to human leukocyte antigens (HLA), resulting in an increased waiting time for a suitable kidney, more acute and chronic rejection, and a shorter graft survival compared to non-highly sensitised patients. Current standard immunosuppression protocols do not adequately suppress memory responses, and so alternative strategies are needed. Autologous polyclonally expanded regulatory T cells (Tregs) have been demonstrated to be safe in transplant settings and could be a potential alternative to modulate memory immune alloresponses. METHODS: The aim of this trial is to determine whether adoptive transfer of autologous Tregs into HLA sensitised patients can suppress memory T and B cell responses against specific HLA antigens. This is a two-part, multi-centre, prospective clinical trial, comprising an observational phase (Part 1) aiming to identify patients with unregulated cellular memory responses to HLA (Pure HLA Proteins) followed by an interventional phase (Part 2). The first 9 patients identified as being eligible in Part 1 will undergo baseline immune monitoring for 2 months to inform statistical analysis of the primary endpoint. Part 2 is an adaptive, open labelled trial based on Simon's two-stage design, with 21 patients receiving Good Manufacturing Practice (GMP)-grade polyclonally expanded Tregs to a dose of 5-10 × 106 cells/kg body weight. The primary EP is suppression of in vitro memory responses for 2 months post-infusion. 12 patients will receive treatment in stage 1 of Part 2, and 9 patients will receive treatment in stage 2 of Part 2 if ≥ 50% patients pass the primary EP in stage 1. DISCUSSION: This is a prospective study aiming to identify patients with unregulated cellular memory responses to Pure HLA Proteins and determine baseline variation in these patterns of response. Part 2 will be an adaptive phase IIa clinical trial with 21 patients receiving a single infusion of GMP-grade polyclonally expanded Tregs in two stages. It remains to be demonstrated that modulating memory alloresponses clinically using Treg therapy is achievable. TRIAL REGISTRATION: EudraCT Number: 2021-001,664-23. REC Number: 21/SC/0253. Trial registration number ISRCTN14582152.


Assuntos
Transplante de Rim , Humanos , Transplante de Rim/efeitos adversos , Linfócitos T Reguladores , Estudos Prospectivos , Rim , Terapia de Imunossupressão , Antígenos HLA , Estudos Observacionais como Assunto , Estudos Multicêntricos como Assunto , Ensaios Clínicos Fase II como Assunto
3.
Eur J Clin Pharmacol ; 78(7): 1155-1163, 2022 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-35484251

RESUMO

PURPOSE: To assess the impact of long-term use of different drugs commonly prescribed in Alzheimer's disease (AD) on its clinical course and to identify clinical and therapeutic factors associated with a delay in AD progression. METHODS: We retrospectively enrolled 50 patients visited at the Neurology Unit, Careggi University Hospital (Florence), followed for at least 24 months. AD diagnosis was made according to clinical diagnostic criteria for probable/possible AD dementia, always supported at least by one biomarker. Clinical features, MMSE scores evaluated at diagnosis and every 6 months, and AD drugs used for at least 6 months, were recorded. Cox regression analysis was performed to estimate the hazard ratio (HR) for AD progression, assuming as the "final event," the progression to a more severe disease stage, defined as the achievement of an MMSE score less than 10. RESULTS: At baseline, the median MMSE score was 22. During follow-up (median of 41 months), 56% of patients progressed to a more severe disease stage. The use of memantine, either alone (HR 0.24; 95% CI 0.09-0.60) or combined with acetylcholinesterase inhibitors (HR 0.35; 95% CI 0.14-0.88) and a higher MMSE score at baseline (HR 0.82; 95% CI 0.70-0.96) were associated with a significantly lower risk of AD progression. CONCLUSION: Nowadays, effective disease-modifying therapy for AD is missing. Nevertheless, when the diagnosis is established, our results support the advantage of long-term use of available pharmacological treatments, especially in combination, in delaying AD progression to its more severe disease stage.


Assuntos
Doença de Alzheimer , Acetilcolinesterase/uso terapêutico , Doença de Alzheimer/diagnóstico , Doença de Alzheimer/tratamento farmacológico , Inibidores da Colinesterase/uso terapêutico , Progressão da Doença , Humanos , Memantina/uso terapêutico , Estudos Retrospectivos
4.
Neurosurg Rev ; 43(4): 1109-1116, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31227951

RESUMO

Perioperative management of patients with sellar lesion submitted to endoscopic transsphenoidal neurosurgery (TSS) lacks standardization and therefore it is committed to each center clinical practice. Although neurosurgical procedure remains the same for all sellar lesions, perioperative approach can require different measures depending on the underlying disease. With the aim of standardizing our perioperative procedures and sharing our experience with other centers involved in the management of pituitary disease, we developed a clinical care path for patients with sellar lesions candidate to endoscopic TSS. For the drafting of the following protocol, the national and international guidelines published in the last 5 years have been evaluated and integrated with our center experience accumulated in decades of clinical practice. A steering committee including medical doctors involved in management of patients with pituitary masses at the Padua Hospital reviewed current knowledge on this topic. The committee developed a first draft which was shared with a broader group of medical doctors to reach a preliminary consensus; when it was reached, the clinical care assistance pathway was confirmed, validated, and published in the local web-based health service. We want to present and share our experience with colleagues involved in the perioperative management of pituitary diseases in other centers.


Assuntos
Endoscopia/métodos , Procedimentos Neurocirúrgicos/métodos , Sela Túrcica/cirurgia , Osso Esfenoide/cirurgia , Protocolos Clínicos , Guias como Assunto , Humanos , Imageamento por Ressonância Magnética , Modelos Anatômicos , Alta do Paciente , Assistência Perioperatória , Doenças da Hipófise/diagnóstico por imagem , Doenças da Hipófise/cirurgia , Neoplasias Hipofisárias/diagnóstico por imagem , Neoplasias Hipofisárias/cirurgia , Sela Túrcica/diagnóstico por imagem , Osso Esfenoide/diagnóstico por imagem , Resultado do Tratamento
5.
Brain Inj ; 34(13-14): 1714-1722, 2020 12 05.
Artigo em Inglês | MEDLINE | ID: mdl-33190555

RESUMO

OBJECTIVE: To investigate the relationships between (a) the psychological status of the caregiver, (b) the specific features of caregiving as perceived by the cognitive therapist in neuro-rehabilitation, (c) the caregivers' subjective approach to neuro-rehabilitation, and (d) the functional outcome of the patient. METHODS: Twenty-four patients with severe acquired brain injury and their 24 caregivers participated in this observational study. Caregivers underwent a psychological assessment examining emotional distress, burden and family strain; their subjective approach to neuro-rehabilitation has been evaluated by two specific answers. The patients' cognitive therapists responded to an ad-hoc questionnaire, namely the "Caregiving Impact on Neuro-Rehabilitation Scale" (CINRS), evaluating the features (i.e., amount and quality) of caregiving. Finally, the functional outcome of the patient was assessed through standardized scales of disability and cognitive functioning. RESULTS: The caregivers' psychological well-being was associated to the features of caregiving, to the subjective approach to neuro-rehabilitation, and to the functional recovery of their loved ones. A better caregivers' approach to neuro-rehabilitation was also associated to an overall positive impact of caregiving in neuro-rehabilitation and to a better functional outcome of the patients. CONCLUSIONS: We posited a virtuous circle involving caregivers within the neuro-rehabilitation process, according to which the caregivers' psychological well-being could be strictly associated to a better level of caregiving and to a better functional outcome of the patients that, in turn, could positively influence the caregivers' psychological well-being. Although preliminary, these results suggest a specific psycho-educational intervention, aimed at improving the caregivers' psychological well-being and at facilitating their caring of the loved one.


Assuntos
Lesões Encefálicas , Cuidadores , Adaptação Psicológica , Humanos , Estresse Psicológico , Inquéritos e Questionários
6.
Artigo em Inglês | MEDLINE | ID: mdl-30323038

RESUMO

Although the Sensititre Yeast-One (SYO) and Etest methods are widely utilized, interpretive criteria are not available for triazole susceptibility testing of Candida or Aspergillus species. We collected fluconazole, itraconazole, posaconazole, and voriconazole SYO and Etest MICs from 39 laboratories representing all continents for (method/agent-dependent) 11,171 Candida albicans, 215 C. dubliniensis, 4,418 C. glabrata species complex, 157 C.guilliermondii (Meyerozyma guilliermondii), 676 C. krusei (Pichia kudriavzevii), 298 C.lusitaniae (Clavispora lusitaniae), 911 C.parapsilosissensu stricto, 3,691 C.parapsilosis species complex, 36 C.metapsilosis, 110 C.orthopsilosis, 1,854 C.tropicalis, 244 Saccharomyces cerevisiae, 1,409 Aspergillus fumigatus, 389 A.flavus, 130 A.nidulans, 233 A.niger, and 302 A.terreus complex isolates. SYO/Etest MICs for 282 confirmed non-wild-type (non-WT) isolates were included: ERG11 (C. albicans), ERG11 and MRR1 (C. parapsilosis), cyp51A (A. fumigatus), and CDR2 and CDR1 overexpression (C. albicans and C. glabrata, respectively). Interlaboratory modal agreement was superior by SYO for yeast species and by the Etest for Aspergillus spp. Distributions fulfilling CLSI criteria for epidemiological cutoff value (ECV) definition were pooled, and we proposed SYO ECVs for S. cerevisiae and 9 yeast and 3 Aspergillus species and Etest ECVs for 5 yeast and 4 Aspergillus species. The posaconazole SYO ECV of 0.06 µg/ml for C. albicans and the Etest itraconazole ECV of 2 µg/ml for A. fumigatus were the best predictors of non-WT isolates. These findings support the need for method-dependent ECVs, as, overall, the SYO appears to perform better for susceptibility testing of yeast species and the Etest appears to perform better for susceptibility testing of Aspergillus spp. Further evaluations should be conducted with more Candida mutants.


Assuntos
Antifúngicos/farmacologia , Aspergillus/efeitos dos fármacos , Candida/efeitos dos fármacos , Triazóis/farmacologia , Aspergilose/tratamento farmacológico , Aspergilose/epidemiologia , Aspergilose/microbiologia , Aspergillus/classificação , Aspergillus/isolamento & purificação , Candida/classificação , Candida/isolamento & purificação , Candidíase/tratamento farmacológico , Candidíase/epidemiologia , Candidíase/microbiologia , Testes de Sensibilidade a Antimicrobianos por Disco-Difusão , Farmacorresistência Fúngica , Fluconazol/farmacologia , Humanos , Hospedeiro Imunocomprometido , Itraconazol/farmacologia , Voriconazol/farmacologia
7.
Eur J Cancer Care (Engl) ; 28(1): e12410, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26531122

RESUMO

The maintenance of quality of life in patients with high-grade glioma is an important endpoint during treatment, particularly in those with glioblastoma multiforme, given its dismal prognosis; thus, the primary aims of treatments are to reduce morbidity, restore or preserve neurological functions, and the capacity to perform daily activities. This review aims to summarise what is currently known about neurocognitive outcome and quality of life in patients with high-grade glioma, particularly in glioblastoma patients. We considered all the variables that can influence neurocognitive functions, the perception of quality of life and their role as predictors for treatment outcomes.


Assuntos
Neoplasias Encefálicas/psicologia , Cognição , Disfunção Cognitiva/psicologia , Glioblastoma/psicologia , Nível de Saúde , Qualidade de Vida/psicologia , Neoplasias Encefálicas/fisiopatologia , Neoplasias Encefálicas/terapia , Disfunção Cognitiva/fisiopatologia , Glioblastoma/fisiopatologia , Glioblastoma/terapia , Humanos , Prognóstico , Resultado do Tratamento
8.
Br Poult Sci ; 59(1): 7-12, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-28922013

RESUMO

1. An experiment was conducted to compare 5 different methods for the evaluation of litter moisture. 2. For litter collection and assessment, 55 farms were selected, one shed from each farm was inspected and 9 points were identified within each shed. 3. For each device, used for the evaluation of litter moisture, mean and standard deviation of wetness measures per collection point were assessed. 4. The reliability and overall consistency between the 5 instruments used to measure wetness were high (α = 0.72). 5. Measurement of three out of the 9 collection points were sufficient to provide a reliable assessment of litter moisture throughout the shed. 6. Based on the direct correlation between litter moisture and footpad lesions, litter moisture measurement can be used as a resource based on-farm animal welfare indicator. 7. Among the 5 methods analysed, visual scoring is the most simple and practical, and therefore the best candidate to be used on-farm for animal welfare assessment.


Assuntos
Dermatite/veterinária , Doenças do Pé/veterinária , Abrigo para Animais , Perus/fisiologia , Água/análise , Bem-Estar do Animal , Animais , Dermatite/prevenção & controle , Pisos e Cobertura de Pisos , Doenças do Pé/prevenção & controle , Doenças das Aves Domésticas , Reprodutibilidade dos Testes
9.
Am J Transplant ; 17(1): 60-68, 2017 01.
Artigo em Inglês | MEDLINE | ID: mdl-27495898

RESUMO

Understanding the evolution of the direct and indirect pathways of allorecognition following tissue transplantation is essential in the design of tolerance-promoting protocols. On the basis that donor bone marrow-derived antigen-presenting cells are eliminated within days of transplantation, it has been argued that the indirect response represents the major threat to long-term transplant survival, and is consequently the key target for regulation. However, the detection of MHC transfer between cells, and particularly the capture of MHC:peptide complexes by dendritic cells (DCs), led us to propose a third, semidirect, pathway of MHC allorecognition. Persistence of this pathway would lead to sustained activation of direct-pathway T cells, arguably persisting for the life of the transplant. In this study, we focused on the contribution of acquired MHC-class I on recipient DCs during the life span of a skin graft. We observed that MHC-class I acquisition by recipient DCs occurs for at least 1 month following transplantation and may be the main source of alloantigen that drives CD8+ cytotoxic T cell responses. In addition, acquired MHC-class I:peptide complexes stimulate T cell responses in vivo, further emphasizing the need to regulate both pathways to induce indefinite survival of the graft.


Assuntos
Linfócitos T CD4-Positivos/imunologia , Células Dendríticas/imunologia , Rejeição de Enxerto/imunologia , Imunidade Celular/imunologia , Isoantígenos/imunologia , Fragmentos de Peptídeos/imunologia , Transplante de Pele/efeitos adversos , Aloenxertos , Animais , Apresentação de Antígeno/imunologia , Rejeição de Enxerto/patologia , Tolerância Imunológica/imunologia , Camundongos , Camundongos Endogâmicos C57BL , Doadores de Tecidos , Transplantados
10.
Am J Transplant ; 17(4): 931-943, 2017 04.
Artigo em Inglês | MEDLINE | ID: mdl-28027623

RESUMO

Regulatory T cell (Treg) therapy using recipient-derived Tregs expanded ex vivo is currently being investigated clinically by us and others as a means of reducing allograft rejection following organ transplantation. Data from animal models has demonstrated that adoptive transfer of allospecific Tregs offers greater protection from graft rejection compared to polyclonal Tregs. Chimeric antigen receptors (CAR) are clinically translatable synthetic fusion proteins that can redirect the specificity of T cells toward designated antigens. We used CAR technology to redirect human polyclonal Tregs toward donor-MHC class I molecules, which are ubiquitously expressed in allografts. Two novel HLA-A2-specific CARs were engineered: one comprising a CD28-CD3ζ signaling domain (CAR) and one lacking an intracellular signaling domain (ΔCAR). CAR Tregs were specifically activated and significantly more suppressive than polyclonal or ΔCAR Tregs in the presence of HLA-A2, without eliciting cytotoxic activity. Furthermore, CAR and ΔCAR Tregs preferentially transmigrated across HLA-A2-expressing endothelial cell monolayers. In a human skin xenograft transplant model, adoptive transfer of CAR Tregs alleviated the alloimmune-mediated skin injury caused by transferring allogeneic peripheral blood mononuclear cells more effectively than polyclonal Tregs. Our results demonstrated that the use of CAR technology is a clinically applicable refinement of Treg therapy for organ transplantation.


Assuntos
Rejeição de Enxerto/prevenção & controle , Antígeno HLA-A2/imunologia , Receptores de Antígenos/imunologia , Transplante de Pele/efeitos adversos , Linfócitos T Reguladores/imunologia , Aloenxertos , Animais , Rejeição de Enxerto/etiologia , Sobrevivência de Enxerto/imunologia , Xenoenxertos , Humanos , Leucócitos Mononucleares , Camundongos , Camundongos Endogâmicos BALB C , Tolerância ao Transplante/imunologia
11.
Clin Exp Immunol ; 189(2): 197-210, 2017 08.
Artigo em Inglês | MEDLINE | ID: mdl-28422316

RESUMO

The concept of regulatory T cell (Treg ) therapy in transplantation is now a reality. Significant advances in science and technology have enabled us to isolate human Tregs , expand them to clinically relevant numbers and infuse them into human transplant recipients. With several Phase I/II trials under way investigating Treg safety and efficacy it is now more crucial than ever to understand their complex biology. However, our journey is by no means complete; results from these trials will undoubtedly provoke both further knowledge and enquiry which, alongside evolving science, will continue to drive the optimization of Treg therapy in the pursuit of transplantation tolerance. In this review we will summarize current knowledge of Treg biology, explore novel technologies in the setting of Treg immunotherapy and address key prerequisites surrounding the clinical application of Tregs in transplantation.


Assuntos
Imunidade Adaptativa , Rejeição de Enxerto/tratamento farmacológico , Imunoterapia/métodos , Transplante de Órgãos , Linfócitos T Reguladores/imunologia , Tolerância ao Transplante , Animais , Ensaios Clínicos como Assunto , Criopreservação , Humanos , Imunossupressores/uso terapêutico , Camundongos
12.
Clin Exp Immunol ; 188(2): 219-225, 2017 05.
Artigo em Inglês | MEDLINE | ID: mdl-28120329

RESUMO

Anti-apoptotic genes, including those of the Bcl-2 family, have been shown to have dual functionality inasmuch as they inhibit cell death but also regulate inflammation. Several anti-apoptotic molecules have been associated with endothelial cell (EC) survival following transplantation; however, their exact role has yet to be elucidated in respect to controlling inflammation. In this study we created mice expressing murine A1 (Bfl-1), a Bcl-2 family member, under the control of the human intercellular adhesion molecule 2 (ICAM-2) promoter. Constitutive expression of A1 in murine vascular ECs conferred protection from cell death induced by the proinflammatory cytokine tumour necrosis factor (TNF)-α. Importantly, in a mouse model of heart allograft transplantation, expression of A1 in vascular endothelium increased survival in the absence of CD8+ T cells. Better graft outcome in mice receiving an A1 transgenic heart correlated with a reduced immune infiltration, which may be related to increased EC survival and reduced expression of adhesion molecules on ECs. In conclusion, constitutive expression of the anti-apoptotic molecule Bfl1 (A1) in murine vascular ECs leads to prolonged allograft survival due to modifying inflammation.


Assuntos
Células Endoteliais/metabolismo , Expressão Gênica , Transplante de Coração , Antígenos de Histocompatibilidade Menor/genética , Proteínas Proto-Oncogênicas c-bcl-2/genética , Tolerância ao Transplante , Animais , Antígenos CD/genética , Apoptose , Linfócitos T CD8-Positivos , Moléculas de Adesão Celular/genética , Modelos Animais de Doenças , Células Endoteliais/efeitos dos fármacos , Células Endoteliais/imunologia , Endotélio Vascular/citologia , Sobrevivência de Enxerto , Humanos , Inflamação , Camundongos , Regiões Promotoras Genéticas , Transplante Homólogo , Fator de Necrose Tumoral alfa/farmacologia
13.
Epidemiol Infect ; 145(14): 3035-3039, 2017 10.
Artigo em Inglês | MEDLINE | ID: mdl-28879829

RESUMO

Human tuberculosis (TB) caused by Mycobacterium bovis surveillance is affected by a lack of data. The aims of the present study were: (i) to estimate the proportion of human TB caused by M. bovis over a period of 5 years in Bologna, Northern Italy, which, like most Western European countries, has been declared bovine TB-free; (ii) to compare the genetic profiles of M. bovis strains identified in humans with those circulating in cattle in the last 15 years in Italy. Among 511 TB patients, the proportion of human TB caused by M. bovis was 1·76%, significantly associated to extra-pulmonary localization (P = 0·004) and to being elderly (P < 0·001) and Italy-born (P = 0·036). The molecular epidemiology analysis by spoligotyping and Multilocus Variable Tandem Repeat Analysis confirmed that most M. bovis strains from Italy-born patients matched those circulating in cattle herds in Italy between 2001 and 2016. Two cases of Mycobacterium bovis BCG infection were also characterized. In conclusion, the rate of human TB caused by M. bovis was not negligible, highlighting the relevance of molecular typing in evaluating the effectiveness of programmes designed to eradicate TB in cattle in Italy.


Assuntos
Genótipo , Mycobacterium bovis/fisiologia , Tuberculose/epidemiologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Lactente , Itália/epidemiologia , Masculino , Pessoa de Meia-Idade , Repetições Minissatélites , Tipagem de Sequências Multilocus , Mycobacterium bovis/genética , Tuberculose/microbiologia
14.
Nutr Metab Cardiovasc Dis ; 27(8): 711-716, 2017 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-28733051

RESUMO

BACKGROUND AND AIM: Obesity plays a dominant role in the etiology of atrial fibrillation (AF), and the maintenance of a normal body mass index (BMI) seems to prevent and even reduce the incidence of the arrhythmia's recurrence. We selected 270 patients (pts) to assess whether this therapeutic effect was statistically significant even in Mediterranean patients. METHOD AND RESULTS: In this retrospective cohort study, we analyzed every symptomatic AF relapse during a total follow-up of 657 patient-years. Clinical data, BMI variations, and pts' history were available in our clinical database. We divided the pts in four groups (Gs), according to their BMI variation during the follow-up: G1, normal weight pts, maintaining their weight; G2, overweight pts, losing weight; G3, overweight pts, maintaining their weight; G4, pts gaining weight. Their follow-up (in months) was normalized according to their AF relapses, thus obtaining a mean AF-free period for each patient. Among the overweight groups, G2 showed the best AF-free period (9.7 months). However, G3 and G4 showed a reduced AF-free interval (4.6 and 1.7 months, respectively). G1, predictably, had the longest AF-free period (10 months). CONCLUSION: The results of the present study confirm that simple non-invasive intervention aimed to normalize BMI and to control risk factors through appropriate lifestyle can be highly effective in reducing the AF burden, by acting on comorbidities and proarrhythmic mechanisms. Therefore, serious attempt should be made to correct risk factors before an ablation therapy is proposed.


Assuntos
Fibrilação Atrial/prevenção & controle , Obesidade/terapia , Comportamento de Redução do Risco , Redução de Peso , Idoso , Idoso de 80 Anos ou mais , Fibrilação Atrial/diagnóstico , Fibrilação Atrial/etiologia , Fibrilação Atrial/fisiopatologia , Índice de Massa Corporal , Comorbidade , Progressão da Doença , Intervalo Livre de Doença , Feminino , Frequência Cardíaca , Humanos , Masculino , Pessoa de Meia-Idade , Obesidade/complicações , Obesidade/diagnóstico , Obesidade/fisiopatologia , Recidiva , Estudos Retrospectivos , Medição de Risco , Fatores de Risco , Fatores de Tempo , Resultado do Tratamento
15.
J Biol Regul Homeost Agents ; 29(4): 953-60, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26753661

RESUMO

Sex hormones play a role in pain perception, a key variable in evaluating the progression and treatment of osteoarthritis. The aim of this study was to determine the relationship between salivary concentrations of four steroid hormones and functional/clinical outcomes after hip and knee arthroplasty. Saliva samples were collected from 24 otherwise healthy patients with osteoarthritis before surgery, on admission to rehabilitation, and at hospital discharge. Salivary concentrations of testosterone, 17ß-estradiol, dehydroepiandrosterone (DHEA), and cortisol were immunoassayed. Changes in hormone levels were compared with clinical outcomes, as assessed by functional independence measure (FIM®), Barthel Index (BI), and visual analog scale for pain (VAS) scores. Changes in testosterone levels were significantly inversely correlated with VAS (r= -0.53, p=0.043) and FIM® and BI scores in all patients (r= -0.30, p= 0.043, and r= -0.35, p=0.031, respectively). The testosterone to cortisol ratio was inversely correlated with BI scores in all patients (r= -0.30, p=0.040), and in the men (r= -0.55, p=0.005) and the women (r= -0.28, p=0.042) when analyzed separately. Changes in salivary testosterone concentrations closely correlated with clinical outcome measurements for total hip and knee arthroplasty. Clinical outcome after arthroplasty was generally better among the men.


Assuntos
Artroplastia de Quadril , Artroplastia do Joelho , Saliva/química , Esteroides/análise , Idoso , Desidroepiandrosterona/análise , Estradiol/análise , Feminino , Humanos , Hidrocortisona/análise , Masculino , Pessoa de Meia-Idade , Testosterona/análise , Escala Visual Analógica
16.
Scand J Med Sci Sports ; 25(1): 70-80, 2015 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-24433517

RESUMO

Muscle traction and bone metabolism are functionally linked and co-regulated by a series of factors. Although a role for steroid hormones was hypothesized, a clear definition of the bone-muscle interconnection still lacks. To investigate this relationship, we studied bone metabolism, muscle activity, and salivary steroid hormones profile in relation with the physical effort across a cycling stage race, a model of effort in absence of load. Nine pro-cyclists were recruited; body weight and power output/energy expenditure were recorded. Diet was kept constant. Saliva was collected at days -1, 4, 8, 12, 14, 19, and 23; blood and urine were collected at days -1, 12, and 23. Salivary steroid hormones [cortisol, dehydroepiandrosterone (DHEA), testosterone, and estradiol], serum lactate dehydrogenase (LDH), aspartate aminotransferase (AST) and creatine kinase (CK) activities, plasma sclerostin, and urinary calcium and phosphorous were measured. Cortisol remained constant, testosterone decreased at day 4, and estradiol and DHEA firstly increased and then returned to basal levels. Hormone concentrations were not correlated with plasma volume shifts. LDH, CK, AST, sclerostin, and urinary calcium and phosphorous increased. DHEA and estradiol correlated with the physical effort and the bone-muscular markers. A relationship between muscle activity, in absence of load, and bone resorption emerged under a putative regulation by DHEA and estradiol.


Assuntos
Ciclismo/fisiologia , Osso e Ossos/metabolismo , Músculo Esquelético/metabolismo , Proteínas Adaptadoras de Transdução de Sinal , Adulto , Aspartato Aminotransferases/sangue , Proteínas Morfogenéticas Ósseas/sangue , Osso e Ossos/fisiologia , Cálcio/urina , Creatina Quinase/sangue , Desidroepiandrosterona/metabolismo , Metabolismo Energético , Estradiol/metabolismo , Marcadores Genéticos , Humanos , Hidrocortisona/metabolismo , L-Lactato Desidrogenase/sangue , Masculino , Músculo Esquelético/fisiologia , Fósforo/urina , Saliva/química , Testosterona/metabolismo
17.
Spinal Cord ; 53(12): 849-54, 2015 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26193811

RESUMO

STUDY DESIGN: Review study. OBJECTIVES: Alternative treatments to oral phosphodiesterase type 5 inhibitors (PDE5Is) in individuals with spinal cord lesions (SCLs) and erectile dysfunction (ED). SETTING: Italy. METHODS: Research clinical trials (1999-2014). RESULTS: Twelve studies were selected. One article documented that 76% of subjects reached satisfactory sexual intercourse (SI) using intracavernosal injection of vasoactive medications (papaverine and prostaglandin E1). One study regarding perineal training showed a significant increase (P<0.05) in penile tumescence in 10 individuals with preserved sacral segment. Two studies reported contrasting results on erectile function (EF) using various dosages of oral fampridine (25-40 mg). Furthermore, 95.1% of patients on fampridine 25 mg experienced drawbacks. Disappointing findings were found with intraurethral alprostadil (125-1000 µg) and sublingual apomorphine 3 mg. Two studies concerning penile prosthesis reported valid SI more than 75% of the time with a mean follow-up of 11 years, although around 15% of individuals showed side effects. As for surgical treatments, 88% of males submitted to Brindley sacral anterior root stimulator after sacral dorsal rhizotomy achieved valid erection up to 8 years following the procedure. Three studies documented the impact of definitive sacral neuromodulation implant (Medtronic, Minneapolis, MN, USA) also on EF. After surgery, 20-37.5% of patients with ED recovered normal EF. CONCLUSIONS: Data are scant on the efficacy of ED treatments for SCL subjects who did not respond to PDE5Is. Further research should investigate the effects of any SCL treatments even when they are not strictly used for neurogenic sexual dysfunction.


Assuntos
Disfunção Erétil/tratamento farmacológico , Disfunção Erétil/etiologia , Inibidores da Fosfodiesterase 5/uso terapêutico , Traumatismos da Medula Espinal/complicações , 4-Aminopiridina/uso terapêutico , Ensaios Clínicos como Assunto/estatística & dados numéricos , Relação Dose-Resposta a Droga , Humanos , Estudos Longitudinais , MEDLINE/estatística & dados numéricos , Masculino , Traumatismos da Medula Espinal/tratamento farmacológico , Traumatismos da Medula Espinal/cirurgia
18.
Genet Mol Res ; 14(4): 16392-402, 2015 Dec 09.
Artigo em Inglês | MEDLINE | ID: mdl-26662435

RESUMO

Sweet sorghum has considerable potential for ethanol production due to its succulent stalks that contain directly fermentable sugars. Since many traits need to be considered in the selection process to breed superior cultivars for ethanol production, then correlations between the traits might be of use to help the breeder define optimal improvement strategies. The aim of this study was to investigate the association between the principal agro-industrial traits in sweet sorghum, and to evaluate the direct and indirect effects of primary and secondary traits on ethanol production per hectare. In total, 45 sweet sorghum genotypes (lineage/hybrids) were evaluated in an experiment designed in an alpha lattice 5 x 9. The data were analyzed using a mixed model approach. A detailed study of simple correlations was accomplished using path analysis. The experimental precision was high, with an accuracy above 76%. The various genotypes showed genetic variation for all agronomic and industrial traits, except stalk diameter. Some agro-industrial traits showed significant simple correlations with ethanol production, but according to the path analysis, some of these traits did not show a significant direct or indirect effect on ethanol production. The results highlighted the primary and secondary traits with practical relevance to sweet sorghum breeding, since they showed director indirect effects on ethanol production.


Assuntos
Estudos de Associação Genética , Genótipo , Característica Quantitativa Herdável , Sorghum/genética , Sorghum/metabolismo , Meio Ambiente , Etanol/metabolismo
19.
Am J Transplant ; 14(6): 1259-70, 2014 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-24840071

RESUMO

Recent developments in our understanding of vitamin D show that it plays a significant role in immunological health, uniquely occupying both an anti-microbial and immunoregulatory niche. Vitamin D deficiency is widespread amongst renal transplant recipients (RTRs), thus providing one patho-mechanism that may influence the achievement of a successful degree of immunosuppression. It may also influence the development of the infectious, cardiovascular and neoplastic complications seen in RTRs. This review examines the biological roles of vitamin D in the immune system of relevance to renal transplantation (RTx) and evaluates whether vitamin D repletion may be relevant in determining immunologically-related clinical outcomes in RTRs, (including graft survival, cardiovascular disease and cancer). While there are plausible biological and epidemiological reasons to undertake vitamin D repletion in RTRs, there are few randomized-controlled trials in this area. Based on the available literature, we cannot at present categorically make the case for routine measurement and repletion of vitamin D in clinical practice but we do suggest that this is an area in urgent need of further randomized controlled level evidence.


Assuntos
Transplante de Rim , Deficiência de Vitamina D/fisiopatologia , Vitamina D/fisiologia , Rejeição de Enxerto , Sobrevivência de Enxerto , Humanos
20.
Infection ; 42(1): 141-51, 2014 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-24150958

RESUMO

PURPOSE: We compared the risk factors, the diagnostic tools and the outcome of filamentous fungal infections (FFIs) in hematological patients (HAEs) and non-hematological patients (non-HAEs). METHODS: Prospective surveillance (2009-2011) of proven and probable FFIs was implemented in 23 Italian hospitals. RESULTS: Out of 232 FFIs, 113 occurred in HAEs and 119 in non-HAEs. The most frequent infection was invasive aspergillosis (76.1 % for HAEs, 56.3 % for non-HAEs), and the localization was principally pulmonary (83.2 % for HAEs, 74.8 % for non-HAEs). Neutropenia was a risk factor for 89.4 % HAEs; the main underlying condition was corticosteroid treatment (52.9 %) for non-HAEs. The distribution of proven and probable FFIs was different in the two groups: proven FFIs occurred more frequently in non-HAEs, whereas probable FFIs were correlated with the HAEs. The sensitivity of the galactomannan assay was higher for HAEs than for non-HAEs (95.3 vs. 48.1 %). The overall mortality rate was 44.2 % among the HAEs and 35.3 % among the non-HAEs. The etiology influenced the patient outcomes: mucormycosis was associated with a high mortality rate (57.1 % for HAEs, 77.8 % for non-HAEs). CONCLUSIONS: The epidemiological and clinical data for FFIs were not identical in the HAEs and non-HAEs. The differences should be considered to improve the management of FFIs according to the patients' setting.


Assuntos
Fungos/classificação , Fungos/isolamento & purificação , Micoses/epidemiologia , Micoses/microbiologia , Sistema de Registros , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Testes Diagnósticos de Rotina , Feminino , Neoplasias Hematológicas/complicações , Hospitais , Humanos , Itália/epidemiologia , Masculino , Técnicas Microbiológicas/métodos , Pessoa de Meia-Idade , Micoses/diagnóstico , Micoses/mortalidade , Estudos Prospectivos , Análise de Sobrevida , Resultado do Tratamento , Adulto Jovem
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