Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 11 de 11
Filtrar
Mais filtros








Base de dados
Intervalo de ano de publicação
1.
Cancers (Basel) ; 16(8)2024 Apr 11.
Artigo em Inglês | MEDLINE | ID: mdl-38672551

RESUMO

BACKGROUND: The delayed diagnosis of skin tumors is associated with a worsened prognosis. The impact of the interruption of clinical and surgical health services during the COVID-19 pandemic lockdowns has been documented among many pathologies. The impact of delayed diagnoses on patients with cutaneous squamous cell carcinomas (cSCCs) is poorly defined. OBJECTIVE: To compare patient and lesion characteristics and the surgical management of excised cSCCs prior to the pandemic shutdown of services (2018-2019) with the phase following the pandemic's second wave (2021-2022). METHODS: An observational, single-center, cross-sectional study of 416 surgically excised cSCCs over the course of two years was performed. Only patients with histologically confirmed cSCC were enrolled. Data collection included patient demographics and lesion characteristics, time to surgery, surgical approach, and histological data. RESULTS: More cSCC lesions were excised prior to the interruption of services (n = 312 vs. n = 186). Lesions were significantly larger (1.7 ± 1.2 vs. 2.1 ± 1.5 cm; p = 0.006) and more invasive (52% vs. 89%; p < 0.001), in the period 2021-2022. Surgical reconstructive techniques were significantly different (p = 0.001). Metastatic involvement was confirmed in three subjects (one in 2018-2019 and two in 2021-2022). There were no significant differences in the time to surgery or patient characteristics. Multivariable regression analysis identified a 4.7-times higher risk of tumor invasion (OR 4.69, 95%CI 2.55-8.16, p < 0.001), a two-times higher chance of dermo-epidermal grafts (OR 2.06, 95%CI 1.09-3.88, p = 0.025), and a 3.2-times higher risk of positive surgical margins (OR 3.21, 95%CI 1.44-7.17, p = 0.004). CONCLUSIONS: Diagnostic delays of cutaneous SCCs associated with reduced patient access to clinical and diagnostic services are associated with a 4.7-times increased risk of more severe invasion, a three-times increased risk of positive surgical margins, and a significant impact on surgical management, compared to the pre-pandemic period. Comparable patient cohort characteristics and time to surgery remained unchanged.

2.
Front Integr Neurosci ; 16: 933426, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36118115

RESUMO

Developmental neuroscience research has not yet fully unveiled the dynamics involved in human birth. The trigger of the first breath, often assumed to be the marker of human life, has not been characterized nor has the process entailing brain modification and activation at birth been clarified yet. To date, few researchers only have investigated the impact of the extrauterine environment, with its strong stimuli, on birth. This 'hypothesis and theory' article assumes the role of a specific stimulus activating the central nervous system (CNS) at human birth. This stimulus must have specific features though, such as novelty, efficacy, ubiquity, and immediacy. We propose light as a robust candidate for the CNS activation via the retina. Available data on fetal and neonatal neurodevelopment, in particular with reference to retinal light-responsive pathways, will be examined together with the GABA functional switch, and the subplate disappearance, which, at an experimental level, differentiate the neonatal brain from the fetal brain. In this study, we assume how a very rapid activation of retinal photoreceptors at birth initiates a sudden brain shift from the prenatal pattern of functions to the neonatal setup. Our assumption implies the presence of a photoreceptor capable of capturing and transducing light/photon stimulus, transforming it into an effective signal for the activation of new brain functions at birth. Opsin photoreception or, more specifically, melanopsin-dependent photoreception, which is provided by intrinsically photosensitive retinal ganglion cells (ipRGCs), is considered as a valid candidate. Although what is assumed herein cannot be verified in humans based on knowledge available so far, proposing an important and novel function can trigger a broad range of diversified research in different domains, from neurophysiology to neurology and psychiatry.

3.
Early Interv Psychiatry ; 12(3): 456-463, 2018 06.
Artigo em Inglês | MEDLINE | ID: mdl-27172538

RESUMO

AIM: The aim of this study was to evaluate the differences between teachers' knowledge about early psychosis among three different Italian cities and a UK sample. METHODS: The sample consisted of 556 secondary school teachers from three different cities in Italy (Milan, Rome and Lamezia Terme) and London (UK). The research was based on the Knowledge and Experience of Social Emotional Difficulties Among Young People Questionnaire. The Italian version of the questionnaire was used in Italy. RESULTS: Overall, 67.6% of English teachers, 58.5% of Milan's teachers, 41.8% of Rome's teachers and 33.3% of Lamezia Terme's teachers were able to recognize psychotic symptoms from a case vignette. Logistic regression analysis showed that 'city' was the only independent variable significantly related to the correct/wrong answer about diagnosis. CONCLUSIONS: We found statistically significant differences between the three Italian samples and the UK sample regarding teachers' knowledge about first signs of psychosis. English teachers showed a better knowledge than Italian teachers in general. Teachers from Milan, where a specific early detection program was established in 2000, seemed to be more familiar with early signs of psychosis than teachers in the other two Italian towns.


Assuntos
Conhecimentos, Atitudes e Prática em Saúde , Transtornos Psicóticos/diagnóstico , Professores Escolares/estatística & dados numéricos , Capacitação de Professores/estatística & dados numéricos , Diagnóstico Precoce , Humanos , Itália , Londres , Transtornos Psicóticos/psicologia , Inquéritos e Questionários
4.
Schizophr Res ; 189: 50-56, 2017 11.
Artigo em Inglês | MEDLINE | ID: mdl-28254200

RESUMO

BACKGROUND: Current early screeners for psychosis-risk states have still to prove ability in identifying at-risk individuals. Among screeners, the 92-item Prodromal Questionnaire (PQ-92) is often used. We aimed to assess the validity of its Italian translation in a large Italian adolescent and young adult help-seeking sample. METHODS: We included all individuals aged 12-36years seeking help at psychiatric mental health services in a large semirural Roman area (534,600 population) who accepted to participate. Participants completed the Italian version of the PQ-92 and were subsequently assessed with the Structured Interview of Prodromal/Psychosis-Risk Syndromes (SIPS). We examined diagnostic accuracy (sensitivity, specificity, positive and negative predictive values, and positive and negative likelihood ratios) and content, concurrent, and convergent validity between PQ-92 and SIPS using Cronbach's alpha, Cohen's kappa, and Spearman's rho, respectively. We tested the validity of adopted cut-offs through Receiver Operating Characteristic (ROC) curves plotted against SIPS diagnoses and the instrument's factor-structure through Principal Component Analysis. RESULTS: PQ-92 showed high internal consistency, acceptable diagnostic accuracy and concurrent validity, and excellent convergent validity. ROC analyses pointed to scores of 18 on the Positive subscale and 36 on the total PQ-92 as best cut-offs. The Scree-test identified a four-factor solution as fitting best. CONCLUSIONS: Psychometric properties of Italian PQ-92 were satisfactory. Optimal cut-offs were confirmed at ≥18 on the positive subscale, but at ≥36 on the total scale was able to identify more SIPS-positive cases.


Assuntos
Análise Fatorial , Sintomas Prodrômicos , Transtornos Psicóticos/diagnóstico , Transtornos Psicóticos/psicologia , Inquéritos e Questionários , Adolescente , Adulto , Criança , Feminino , Humanos , Masculino , Pacientes Ambulatoriais , Escalas de Graduação Psiquiátrica , Psicometria , Curva ROC , Reprodutibilidade dos Testes , Esquizofrenia/diagnóstico , Psicologia do Esquizofrênico , Tradução , Adulto Jovem
5.
Neuroscience ; 342: 232-251, 2017 02 07.
Artigo em Inglês | MEDLINE | ID: mdl-27235745

RESUMO

In mammals, early adverse experiences, including mother-pup interactions, shape the response of an individual to chronic stress or to stress-related diseases during adult life. This has led to the elaboration of the theory of the developmental origins of health and disease, in particular adult diseases such as cardiovascular and metabolic disorders. In addition, in humans, as stated by Massimo Fagioli's Human Birth Theory, birth is healthy and equal for all individuals, so that mental illness develop exclusively in the postnatal period because of the quality of the relationship in the first year of life. Thus, this review focuses on the importance of programming during the early developmental period on the manifestation of adult diseases in both animal models and humans. Considering the obvious differences between animals and humans we cannot systematically move from animal models to humans. Consequently, in the first part of this review, we will discuss how animal models can be used to dissect the influence of adverse events occurring during the prenatal and postnatal periods on the developmental trajectories of the offspring, and in the second part, we will discuss the role of postnatal critical periods on the development of mental diseases in humans. Epigenetic mechanisms that cause reversible modifications in gene expression, driving the development of a pathological phenotype in response to a negative early postnatal environment, may lie at the core of this programming, thereby providing potential new therapeutic targets. The concept of the Human Birth Theory leads to a comprehension of the mental illness as a pathology of the human relationship immediately after birth and during the first year of life.


Assuntos
Encéfalo/crescimento & desenvolvimento , Encéfalo/fisiopatologia , Transtornos Mentais/fisiopatologia , Estresse Psicológico/fisiopatologia , Animais , Epigênese Genética , Humanos , Transtornos Mentais/genética , Modelos Biológicos , Estresse Psicológico/genética
6.
Psychiatry Res ; 245: 297-302, 2016 Nov 30.
Artigo em Inglês | MEDLINE | ID: mdl-27567192

RESUMO

Early adverse experiences are associated with neurobiological changes and these may underlie the increased risk of psychopathology. The Childhood Trauma Questionnaire (CTQ-SF) is the most commonly used instrument for assessing childhood maltreatment. Thus, the aim of our study was to investigate the factorial validity of an Italian version of the CTQ-SF in a sample of psychiatric inpatients by means of confirmatory and exploratory factor analyses. The sample was composed of 471 psychiatric in-patients and out-patients (206 males and 265 females) aged 16-80 years (mean age=34.4 years [SD=16.3]) consecutively admitted to two psychiatric departments. All patients were administered the Italian version of the CTQ-SF. We tested five different factor models which lacked good fit, while the exploratory factor analysis supported the adequacy of a solution with three factors (Emotional Neglect/Abuse, Sexual Abuse, Physical Neglect/Abuse). The three factors had satisfactory internal consistency (ordinal Cronbach alphas >0.90). Our study supports results from previous research indicating the lack of structural invariance of the CTQ-SF in cross-cultural adaptations of the test, and the fact that, when measuring different types of childhood maltreatment, the difference between abuse and neglect may be not valid.


Assuntos
Adultos Sobreviventes de Eventos Adversos na Infância , Transtornos Mentais , Psicometria/instrumentação , Inquéritos e Questionários/normas , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Itália , Masculino , Pessoa de Meia-Idade , Reprodutibilidade dos Testes , Adulto Jovem
7.
Psychoneuroendocrinology ; 62: 36-46, 2015 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26231445

RESUMO

Oxytocin receptors are known to modulate synaptic transmission and network activity in the hippocampus, but their precise function has been only partially elucidated. Here, we have found that activation of presynaptic oxytocin receptor with the potent agonist, carbetocin, enhanced depolarization-evoked glutamate release in the ventral hippocampus with no effect on GABA release. This evidence paved the way for examining the effect of carbetocin treatment in "prenatally restraint stressed" (PRS) rats, i.e., the offspring of dams exposed to repeated episodes of restraint stress during pregnancy. Adult PRS rats exhibit an anxious/depressive-like phenotype associated with an abnormal glucocorticoid feedback regulation of the hypothalamus-pituitary-adrenal (HPA) axis, and, remarkably, with a reduced depolarization-evoked glutamate release in the ventral hippocampus. Chronic systemic treatment with carbetocin (1mg/kg, i.p., once a day for 2-3 weeks) in PRS rats corrected the defect in glutamate release, anxiety- and depressive-like behavior, and abnormalities in social behavior, in the HPA response to stress, and in the expression of stress-related genes in the hippocampus and amygdala. Of note, carbetocin treatment had no effect on these behavioral and neuroendocrine parameters in prenatally unstressed (control) rats, with the exception of a reduced expression of the oxytocin receptor gene in the amygdala. These findings disclose a novel function of oxytocin receptors in the hippocampus, and encourage the use of oxytocin receptor agonists in the treatment of stress-related psychiatric disorders in adult life.


Assuntos
Ácido Glutâmico/metabolismo , Hipocampo/efeitos dos fármacos , Ocitocina/análogos & derivados , Efeitos Tardios da Exposição Pré-Natal/metabolismo , Terminações Pré-Sinápticas/efeitos dos fármacos , Receptores de Ocitocina/agonistas , Estresse Psicológico/metabolismo , Animais , Comportamento Animal/efeitos dos fármacos , Comportamento Animal/fisiologia , Feminino , Hipocampo/metabolismo , Hipocampo/fisiopatologia , Sistema Hipotálamo-Hipofisário/efeitos dos fármacos , Sistema Hipotálamo-Hipofisário/fisiopatologia , Ocitocina/farmacologia , Sistema Hipófise-Suprarrenal/efeitos dos fármacos , Sistema Hipófise-Suprarrenal/fisiopatologia , Gravidez , Efeitos Tardios da Exposição Pré-Natal/fisiopatologia , Terminações Pré-Sinápticas/metabolismo , Ratos , Ratos Sprague-Dawley , Receptores Pré-Sinápticos/metabolismo , Restrição Física , Comportamento Social
8.
Compr Psychiatry ; 59: 68-72, 2015 May.
Artigo em Inglês | MEDLINE | ID: mdl-25748214

RESUMO

BACKGORUND: This study analyzed the presence of DP symptoms in a sample of both psychiatric patients and normal subjects, addressing the issue of DP symptoms in adolescence. METHODS: A total of 267 subjects (149 patients and 118 healthy controls) aged between 14 and 65 years, were assessed by means of CDS, the SCID-I and the K-SADS. The sample was then divided into two subsamples with a cut-off age of 21 years. RESULTS: As expected CDS score was significantly higher in the patient group compared to the healthy control group. As for the age issue, among patients no statistical difference was found comparing subjects over and under 21 years, whereas in the sample of healthy controls, subjects under 21 years reported CDS scores significantly higher. CONCLUSIONS: While in adults DP symptoms are frequently associated with mental disorders, in adolescents they could be considered as a quasi-physiological phenomenon.


Assuntos
Comportamento do Adolescente/psicologia , Despersonalização/psicologia , Transtornos Mentais/psicologia , Adolescente , Adulto , Idoso , Envelhecimento/psicologia , Estudos de Casos e Controles , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem
9.
Adv Neurobiol ; 10: 101-20, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25287538

RESUMO

Stress-related events that occur in the perinatal period can permanently change brain and behavior of the developing individual and there is increasing evidence that early-life adversity is a contributing factor in the etiology of drug abuse and mood disorders. Neural adaptations resulting from early-life stress may mediate individual differences in novelty responsiveness and in turn contribute to drug abuse vulnerability. Prenatal restraint stress (PRS) in rats is a well-documented model of early stress known to induce long-lasting neurobiological and behavioral alterations including impaired feedback mechanisms of the HPA axis, enhanced novelty seeking, and increased sensitiveness to psychostimulants as well as anxiety/depression-like behavior. Together with the HPA axis, functional alterations of the mesolimbic dopamine system and of the metabotropic glutamate receptors system appear to be involved in the addiction-like profile of PRS rats.

10.
Psychopharmacology (Berl) ; 217(3): 301-13, 2011 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-21503609

RESUMO

RATIONALE AND OBJECTIVES: The rat model of prenatal restraint stress (PRS) replicates factors that are implicated in the etiology of anxious/depressive disorders. We used this model to test the therapeutic efficacy of agomelatine, a novel antidepressant that behaves as a mixed MT1/MT2 melatonin receptor agonist/5-HT(2c) serotonin receptor antagonist. RESULTS: Adult PRS rats showed behavioral, cellular, and biochemical abnormalities that were consistent with an anxious/depressive phenotype. These included an increased immobility in the forced swim test, an anxiety-like behavior in the elevated plus maze, reduced hippocampal levels of phosphorylated cAMP-responsive element binding protein (p-CREB), reduced hippocampal levels of mGlu2/3 and mGlu5 metabotropic glutamate receptors, and reduced neurogenesis in the ventral hippocampus, the specific portion of the hippocampus that encodes memories related to stress and emotions. All of these changes were reversed by a 3- or 6-week treatment with agomelatine (40-50 mg/kg, i.p., once a day). Remarkably, agomelatine had no effect in age-matched control rats, thereby behaving as a "disease-dependent" drug. CONCLUSIONS: These data indicate that agomelatine did not act on individual symptoms but corrected all aspects of the pathological epigenetic programming triggered by PRS. Our findings strongly support the antidepressant activity of agomelatine and suggest that the drug impacts mechanisms that lie at the core of anxious/depressive disorders.


Assuntos
Acetamidas/uso terapêutico , Antidepressivos/uso terapêutico , Comportamento Animal/efeitos dos fármacos , Hipocampo , Neurogênese/efeitos dos fármacos , Efeitos Tardios da Exposição Pré-Natal/prevenção & controle , Estresse Psicológico/complicações , Acetamidas/administração & dosagem , Animais , Antidepressivos/administração & dosagem , Ansiedade/metabolismo , Ansiedade/patologia , Ansiedade/prevenção & controle , Proteína de Ligação a CREB/metabolismo , Proliferação de Células/efeitos dos fármacos , Interpretação Estatística de Dados , Depressão/metabolismo , Depressão/patologia , Depressão/prevenção & controle , Feminino , Hipocampo/efeitos dos fármacos , Hipocampo/embriologia , Hipocampo/metabolismo , Hipocampo/patologia , Immunoblotting , Masculino , Aprendizagem em Labirinto/efeitos dos fármacos , Gravidez , Efeitos Tardios da Exposição Pré-Natal/metabolismo , Efeitos Tardios da Exposição Pré-Natal/patologia , Efeitos Tardios da Exposição Pré-Natal/psicologia , Ratos , Ratos Sprague-Dawley , Receptor de Glutamato Metabotrópico 5 , Receptores de Glutamato Metabotrópico/metabolismo
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA