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1.
Psychol Assess ; 36(2): 147-161, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38236268

RESUMO

Although interindividual differences in narcissism are well studied, little is known about assessing narcissism at the within-person level. To fill this research gap, we investigated whether the narcissism construct is represented in the same way at the between- and within-person levels. We analyzed four established narcissism measures across multiple studies. In each of the studies, participants completed narcissism measures in ecological momentary assessment or daily diary studies. Equivalent construct representation across between- and within-person narcissism (i.e., cross-level measurement invariance) was found. State narcissism measures showed convergent validities for the trait narcissism scales. Moreover, we also found that antagonistic narcissism was most strongly related to within-person variability in narcissism. Our investigation sheds new light on the structure and assessment of narcissism on the within-person level by providing a comprehensive examination of its measurement. (PsycInfo Database Record (c) 2024 APA, all rights reserved).


Assuntos
Avaliação Momentânea Ecológica , Narcisismo , Humanos , Bases de Dados Factuais , Fenótipo
2.
Clin Psychol Psychother ; 30(6): 1215-1233, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37727949

RESUMO

Recent diagnostic developments suggest that paranoia is a transdiagnostic characteristic common to several personality disorders rather than a personality disorder per se. Nonetheless, empirical literature fails to provide comprehensive and univocal findings on whether and how paranoid presentations relate to different personality disorders. In the present scoping review, we map the empirical literature on paranoid presentations in personality disorders, considering the entire spectrum of paranoid manifestations (i.e., the paranoia hierarchy). In selecting original quantitative studies on paranoid presentations in personality-disordered patients, we screened 4,433 records in PsycArticles, PsycInfo and PUBMED. We eventually included 47 eligible studies in the review. Our synthesis indicates consistent empirical evidence of a wide range of paranoid presentations in Paranoid, Schizotypal and Borderline personality disorders. Conversely, little empirical literature exists on paranoid presentations in other personality disorders. Preliminary findings suggest broad-severity paranoid presentations, ranging from milder to severe forms, in Paranoid, Schizotypal and Borderline personality disorders. There is also some evidence of milder forms of paranoia in Avoidant, Antisocial and Narcissistic personality disorders. Conversely, there is poor evidence of paranoid presentations in Schizoid, Histrionic, Dependent or Obsessive-compulsive personality disorders. Research gaps and recommendations for improving empirical research on paranoid presentations in personality disorders are discussed.


Assuntos
Transtorno da Personalidade Borderline , Transtorno Obsessivo-Compulsivo , Humanos , Transtornos da Personalidade/diagnóstico , Transtorno da Personalidade Borderline/diagnóstico , Transtorno da Personalidade Borderline/epidemiologia , Transtorno Obsessivo-Compulsivo/diagnóstico , Transtorno da Personalidade Narcisística
3.
J Pers ; 91(4): 977-991, 2023 08.
Artigo em Inglês | MEDLINE | ID: mdl-35037250

RESUMO

OBJECTIVE: Personality involves both trait and state components, personal goals serving a crucial regulatory function for the expression of personality states. The present study investigates the dynamic interplay between conscientiousness-related goals, conscientious personality states, and trait conscientiousness. METHOD: A sample of 244 community participants responded to a baseline survey (T1), a 5-times-a-day Ecological Momentary Assessment (EMA) for 15 days, and a post-EMA survey (T2). RESULTS: Pre-registered multilevel analyses indicated significant contemporaneous positive and negative associations between momentary conscientious and unconscientious goals and state conscientiousness, respectively. Cross-lagged associations also emerged, with goals predicting future states of conscientiousness. A latent growth model was fitted on a subsample of participants (N = 159). Results indicated that change in trait conscientiousness from T1 to T2 was explained by growth in conscientiousness-related goals during the EMA phase, with a mediating effect of growth in state conscientiousness. CONCLUSIONS: Overall, the results corroborate the importance of goals for modeling contemporaneous and cross-lagged personality dynamics, both in short and longer timeframes.


Assuntos
Objetivos , Personalidade , Humanos , Inquéritos e Questionários , Transtornos da Personalidade , Avaliação Momentânea Ecológica
4.
Assessment ; 30(5): 1391-1406, 2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-35699415

RESUMO

The Pathological Narcissism Inventory (PNI) is extensively used in recent empirical literature on pathological narcissism. However, most studies using the PNI are community-based, and no studies have used the PNI to investigate narcissistic presentations in personality disordered patients. This study investigates measurement invariance of the PNI in community participants and patients with personality disorders, and examines differences of narcissistic presentations in these samples through a multimethod approach. Results show that the PNI can be used reliably to measure and compare traits of pathological narcissism in community participants and patients with personality disorders. Personality disordered patients show higher traits reflecting vulnerable narcissism and overt manifestations of grandiose narcissism, compared with controls. Finally, network analysis indicates that traits of grandiose fantasies and entitlement rage have a central role in defining manifestations of PNI pathological narcissism, regardless of the presence of an underlying personality disorder. Research and clinical implications are discussed.


Assuntos
Transtorno da Personalidade Narcisística , Inventário de Personalidade , Características de Residência , Narcisismo , Humanos , Masculino , Feminino , Adolescente , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Idoso , Inventário de Personalidade/normas , Transtorno da Personalidade Narcisística/diagnóstico , Transtorno da Personalidade Narcisística/psicologia , Ira , Fantasia , Modelos Psicológicos , Transtornos da Personalidade/diagnóstico , Transtornos da Personalidade/psicologia , Estudos de Casos e Controles
5.
J Clin Psychol ; 79(4): 1002-1020, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-36322920

RESUMO

OBJECTIVE: Evidence suggests that pathological narcissism impacts psychotherapy process and outcome. This study investigates whether traits of pathological narcissism account for distinctiveness (construal) of patients' interpersonal perceptions in treatment settings. METHODS: Patients enrolled in psychological/psychotherapeutic treatment (N = 150) described a segment of a session in a written format and subsequently assessed both self- and clinician's behavior on the dimensions of dominance and hostility (patient-reported ratings), along with their pathological narcissistic traits. Three independent raters also assessed interpersonal behaviors (observer-reported ratings) based on the written session descriptions. Indices of construal were defined by the residuals of self-reported (net of observer-reported) ratings and were regressed onto pathological narcissistic traits. RESULTS: No association emerged between pathological narcissism and construal in patients' perceptions of their clinicians. However, grandiose traits of pathological narcissism were related to distinctively perceiving oneself as more dominant, while vulnerable traits were related to distinctively perceiving oneself as more hostile. The former association (but not the latter) also held after incorporating additional observer ratings to investigate the robustness of the results. CONCLUSION: Findings are discussed in light of treatment-related self-enhancement and self-concealment processes.


Assuntos
Narcisismo , Transtornos da Personalidade , Humanos , Relações Interpessoais , Percepção Social , Processos Psicoterapêuticos
6.
J Pers Disord ; 36(5): 559-582, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-36181490

RESUMO

The authors investigate whether and how borderline and pathological narcissistic traits differ in their associations with trait and state rejection sensitivity, and with affective reactions to experiences of social rejection occurring in daily life. Community adults (N = 189) completed baseline measures of rejection sensitivity, borderline personality, and pathological narcissism, and daily measures of perceived social rejection and affective states for 7 days. Vulnerable narcissism was the main driver of negative anticipated emotions for social rejection. Borderline personality made people prone to experiencing social rejection in daily life. Moreover, borderline personality traits predicted greater self-directed aggressive impulses when experiencing social rejection. Grandiose narcissism showed only a negative association with anticipatory anxiety for rejection. These findings highlight that sensitivity to social rejection is crucial in both borderline personality and pathological narcissism.


Assuntos
Transtorno da Personalidade Borderline , Narcisismo , Adulto , Emoções , Humanos , Personalidade , Inventário de Personalidade , Status Social
7.
Acta Psychol (Amst) ; 224: 103529, 2022 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-35151956

RESUMO

The first Italian lockdown during COVID-19 pandemic constituted an example of strong situation. Under this context, we investigated associations of HEXACO personality with COVID-19 mitigation behaviors (self-reported hygiene, distancing, going out). We tested unique associations through regularized regressions and out-of-sample prediction after establishing the best level of analysis (HEXACO traits, facets, items). Personality always explained out-of-sample variance over and above demographics, COVID-related knowledge, concern, impacts, and goals. Hygiene and distancing were best predicted by HEXACO traits, whereas facets constituted the best level for the prediction of going out. In general, honesty-humility (trait or facets) was the clearest predictor of safer behaviors. Results corroborate the relevance of personality even in strong situations, as well as its importance for COVID-19 mitigation.


Assuntos
COVID-19 , Controle de Doenças Transmissíveis , Humanos , Pandemias , Personalidade , SARS-CoV-2
8.
J Sex Med ; 18(11): 1891-1898, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-34580048

RESUMO

BACKGROUND: Individuals with narcissistic traits, specifically vulnerable ones, are more prone to experiencing concerns related to self-worth and physical appearance and to showing heightened sensitivity to appearance evaluation. Negative body image and body image self-consciousness may, in turn, undermine sexual functioning, especially when apprehension is related to body appearance in sexual contexts. METHODS: We aimed to evaluate the associations between self-reported pathological narcissistic traits, both grandiose and vulnerable, and sexual functioning in a large sample of nonclinical women (N = 656). Furthermore, we tested the mediating role of body image self-consciousness in these associations. OUTCOMES: Sexual functioning was measured through the Female Sexual Function Index. RESULTS: The results highlight that vulnerable narcissistic traits are associated with lower sexual functioning, this association being mediated by higher levels of body image self-consciousness. Conversely, grandiose narcissistic traits are linked to lower body image self-consciousness and, consequently, higher levels of sexual functioning. CLINICAL IMPLICATIONS: Considering the link between body image self-consciousness and sexuality is of utmost importance in clinical practice with women, as well as in promoting positive body appreciation. Clinicians working with individuals presenting with pathological personality traits should consider including an assessment of their sexual functioning. S Pavanello Decaro, M Di Sarno, A Anzani, et al. Narcissistic Personality Traits and Sexual Dysfunction in Women: The Role of Body Image Self-Consciousness. J Sex Med 2021;18:1891-1898.


Assuntos
Imagem Corporal , Estado de Consciência , Feminino , Humanos , Narcisismo , Transtornos da Personalidade , Comportamento Sexual
9.
Front Psychol ; 12: 635406, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34122227

RESUMO

This work investigates the relationship between goals and mitigation behaviors during the COVID-19 pandemic in Italy. Study 1 (pilot) identified goals ascribed to following and violating mitigation-related indications. Study 2 investigated the structure of and link between COVID-related goals and behaviors in a large community sample (N = 995, 301 men). Our results showed substantial relationships between goals and behaviors. Goals were best described by a bi-dimensional structure (being safe vs. being free), whereas behaviors clustered into a three-component structure (hygiene, distancing, going out). Hierarchical multiple regressions demonstrated the incremental validity of goals in the prediction of behaviors. Network analysis suggested that goals imbued with social content were more directly related to both risky and preventive behaviors. Motivational aspects emerged as important contributors to the organization of behaviors in the context of the COVID-19 pandemic.

10.
Antibiotics (Basel) ; 10(3)2021 Mar 05.
Artigo em Inglês | MEDLINE | ID: mdl-33807654

RESUMO

Bloodstream infections (BSI) are a severe complication of antineoplastic chemotherapy or hematopoietic stem cell transplantation (HSCT), especially in the presence of antibiotic resistance (AR). A multinational, multicenter retrospective study in patients aged ≤ 18 years, treated with chemotherapy or HSCT from 2015 to 2017 was implemented to analyze AR among non-common skin commensals BSI. Risk factors associated with AR, intensive care unit (ICU) admission and mortality were analyzed by multilevel mixed effects or standard logistic regressions. A total of 1291 BSIs with 1379 strains were reported in 1031 patients. Among Gram-negatives more than 20% were resistant to ceftazidime, cefepime, piperacillin-tazobactam and ciprofloxacin while 9% was resistant to meropenem. Methicillin-resistance was observed in 17% of S. aureus and vancomycin resistance in 40% of E. faecium. Previous exposure to antibiotics, especially to carbapenems, was significantly associated with resistant Gram-negative BSI while previous colonization with methicillin-resistant S. aureus was associated with BSI due to this pathogen. Hematological malignancies, neutropenia and Gram-negatives resistant to >3 antibiotics were significantly associated with higher risk of ICU admission. Underlying disease in relapse/progression, previous exposure to antibiotics, and need of ICU admission were significantly associated with mortality. Center-level variation showed a greater impact on AR, while patient-level variation had more effect on ICU admission and mortality. Previous exposure to antibiotics or colonization by resistant pathogens can be the cause of AR BSI. Resistant Gram-negatives are significantly associated with ICU admission and mortality, with a significant role for the treating center too. The significant evidence of center-level variations on AR, ICU admission and mortality, stress the need for careful local antibiotic stewardship and infection control programs.

11.
Drug Alcohol Depend ; 219: 108439, 2021 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-33333362

RESUMO

BACKGROUND: Due to the high pressure they sustain, family members of substance users are thought to experience negative consequences in mental and physical health. This scoping review provided a comprehensive overview on the mental and physical health of adult Affected Family Members (AFMs). METHOD: We searched in-journal English articles in PubMed, with no date limit, guided by the concepts of stress, strain, and burden, and including several terms related to substance use. Eligibility criteria included focus on adult AFMs, mental and physical health, and clinical forms of substance use. RESULTS: PubMed search identified 3549 articles, with 46 additional papers from other sources. Fifty-six articles were included, quantitative (N = 39), qualitative (N = 15) and both (N = 2). Quantitative findings show that AFMs are subject to increased stress and burden, and impaired mental health. Variable rates of physical problems emerge, with some medical conditions being more common among AFMs of substance users versus controls. Finally, evidence shows increased risk for aggression and reduced quality of life and social adjustment. AFMs report higher stress and strain if they are women, in low socio-economic families, and co-habiting with more severe substance users. Qualitative studies additionally suggest that stigma, self-blame, and social isolation are common. CONCLUSIONS: AFMs of substance users represent a population at higher risk for negative health-related outcomes and should be systematically regarded as targets for treatment.


Assuntos
Família/psicologia , Saúde Mental/estatística & dados numéricos , Transtornos Relacionados ao Uso de Substâncias/psicologia , Adulto , Agressão , Usuários de Drogas , Feminino , Humanos , Masculino , Pesquisa Qualitativa , Qualidade de Vida , Isolamento Social , Estigma Social
12.
Pediatr Infect Dis J ; 40(3): e117-e119, 2021 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-33230057

RESUMO

Diagnosis of systemic cat scratch disease may be challenging. Here, we describe a case of an immunocompetent girl exhibiting fever and multifocal hepatosplenic abscesses. Diagnostic tests for Bartonella henselae infection (enzyme immunoassay and polymerase chain reaction) were found steadily negative and the diagnosis, suspected on the basis of the Margilet's criteria, was finally confirmed by indirect immunofluorescent antibodies.


Assuntos
Bartonella henselae/imunologia , Doença da Arranhadura de Gato/diagnóstico , Adolescente , Antibacterianos/administração & dosagem , Antibacterianos/uso terapêutico , Azitromicina/administração & dosagem , Azitromicina/uso terapêutico , Bartonella henselae/isolamento & purificação , Doença da Arranhadura de Gato/sangue , Doença da Arranhadura de Gato/tratamento farmacológico , Doxiciclina/administração & dosagem , Doxiciclina/uso terapêutico , Quimioterapia Combinada , Feminino , Febre/diagnóstico , Imunofluorescência/métodos , Humanos , Testes Sorológicos
14.
Behav Sci (Basel) ; 9(7)2019 Jul 19.
Artigo em Inglês | MEDLINE | ID: mdl-31331103

RESUMO

Medically Unexplained Physical Symptoms (MUPS) are physical symptoms without a medical explanation. This study collected data from hospitalized patients presenting MUPS, aiming to draw a clinical and socio-demographic profile of patients with MUPS, to explore psychopathological correlations of Somatic Symptoms Disorder (SSD) diagnosis, and to estimate economic costs related to hospital management for MUPS. The cross-sectional study consisted in the evaluation of data referring to hospitalized patients admitted between 2008 and 2018 in a teaching hospital in Northern Italy. A total of 273 patients presenting MUPS have been hospitalized. The sample showed a prevalence of female, married and employed patients. The most frequent wards involved are Neurology, Internal Medicine and Short Unit Stay. The most common symptoms found are headache, pain, syncope and vertigo. There is no evidence that a history of medical disease is associated with a diagnosis of SSD. A personality disorder diagnosis in patients with MUPS was associated with increased probability of having a diagnosis of SSD. A marginally significant positive association emerged with anxiety disorders, but not with depressive disorder. The overall estimated cost of hospitalization for patients with MUPS is 475'409.73 €. The study provides the investigation of a large number of patients with MUPS and a financial estimate of related hospitalization costs.

15.
New Microbiol ; 42(1): 49-51, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-30785208

RESUMO

Pertussis is quite frequent and severe among infants; therefore, rapid diagnosis and timely targeted therapy are essential. Although a molecular test for etiological diagnosis is now available, it may not be available everywhere, and therefore adjunctive diagnostic tests are still useful for presumptive diagnosis. We describe the use of procalcitonin (PCT) and lymphocyte count to discriminate among pertussis, bacterial and viral infections. Fourteen infants per group were studied. The decision tree, built considering all available variables, showed a major role of PCT in predicting the different groups. A PCT value equal to or greater than 0.75 ng/ml selected for bacterial infections. A PCT value lower than 0.75 ng/ml and a lymphocyte count equal to or greater than 10,400/mm3 selected the subjects with pertussis, while a lymphocyte count lower than 10,400/mm3 selected for viral etiology. PCT should be used in the diagnosis of infants suspected of having pertussis.


Assuntos
Infecções Bacterianas , Contagem de Linfócitos , Pró-Calcitonina , Coqueluche , Infecções Bacterianas/sangue , Infecções Bacterianas/diagnóstico , Biomarcadores/sangue , Humanos , Lactente , Recém-Nascido , Pró-Calcitonina/sangue , Viroses/sangue , Viroses/diagnóstico , Coqueluche/diagnóstico
16.
Ital J Pediatr ; 41: 57, 2015 Aug 14.
Artigo em Inglês | MEDLINE | ID: mdl-26268374

RESUMO

Celiac Disease (CD) is an immune-mediated systemic disorder elicited by gluten and related prolamines in genetically susceptible individuals and it is the result of the interaction between genetic and environmental factors. Among genetic risk factors, the strongest association is with the HLA class II DQ region; nevertheless at least 39 non-HLA loci are associated with CD. Gluten is the main environmental trigger of the disease. In addition, infant feeding and weaning practices as well as timing of gluten introduction in the diet have been suggested to contribute to CD risk. Furthermore a role for infectious agents and microbiota composition in disease development has also been proposed.Aim of this short review is to discuss the current knowledge on both genetic and environmental risk factors for the development of CD; moreover we will provide a brief overview of the possible strategies that could be envisaged to prevent this condition, at least in the population at-risk.


Assuntos
Doença Celíaca/etiologia , Doença Celíaca/prevenção & controle , Doença Celíaca/imunologia , Predisposição Genética para Doença , Humanos , Metagenoma/imunologia , Microbiota/imunologia , Fatores de Risco
18.
Int J Food Sci Nutr ; 65(8): 953-9, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25030417

RESUMO

Several recent reports describe a role of probiotics as a therapeutic approach for celiac disease (CD). Two undigested A-gliadin peptides, P31-43 and P57-68, are central to CD pathogenesis, inducing an innate and an adaptive immune response, respectively. They enter enterocytes and localize to vesicular compartment to induce their toxic/immunogenics effects. In this article, we tested the effect of probiotic Lactobacillus paracasei (LP) CBA L74 (International Depository Accession Number LMG P-24778), its supernatant and LP-fermented cereals on gliadin peptides, P31-43 and P57-68, entrance in Caco-2 cells. Both LP CBA L74 and its supernatant inhibit P31-43 (intensity of fluorescence; FI: 75%) and P57-68 (FI: 50%) entrance in Caco2 cells, indicating that this biological effect is due to some product included in LP CBA L74 supernatant. This effect was present also after fermentation of cereals. This study describes a novel effect of probiotics in the prevention of undigested gliadin peptides toxic effects.


Assuntos
Produtos Biológicos/farmacologia , Doença Celíaca/metabolismo , Gliadina/metabolismo , Mucosa Intestinal/metabolismo , Lactobacillus , Peptídeos/metabolismo , Probióticos , Produtos Biológicos/uso terapêutico , Células CACO-2 , Doença Celíaca/tratamento farmacológico , Células Cultivadas , Colo/efeitos dos fármacos , Colo/metabolismo , Grão Comestível/microbiologia , Enterócitos/efeitos dos fármacos , Enterócitos/metabolismo , Fermentação , Humanos , Mucosa Intestinal/efeitos dos fármacos , Probióticos/uso terapêutico
19.
PLoS One ; 8(10): e76006, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-24204586

RESUMO

Celiac disease (CD) occurs frequently, and is caused by ingestion of prolamins from cereals in subjects with a genetic predisposition. The small intestinal damage depends on an intestinal stress/innate immune response to certain gliadin peptides (e.g., A-gliadin P31-43) in association with an adaptive immune response to other gliadin peptides (e.g., A-gliadin P57-68). Gliadin and peptide P31-43 affect epithelial growth factor receptor (EGFR) signaling and CD enterocyte proliferation. The reason why the stress/innate immune and proliferative responses to certain gliadin peptides are present in CD and not in control intestine is so far unknown. The aim of this work is to investigate if, in CD, a constitutive alteration of enterocyte proliferation and signaling exists that may represent a predisposing condition to the damaging effects of gliadin. Immunofluorescence and immunohistochemistry were used to study signaling in CD fibroblasts and intestinal biopsies. Western blot (WB) analysis, immunoprecipitation, and quantitative PCR were also used. We found in CD enterocytes enhancement of both proliferation and Epidermal Growth Factor Receptor (EGFR)/ligand system. In CD enterocytes and fibroblasts we found increase of the phosphorylated downstream signaling molecule Extracellular Signal Regulated Kinase (ERK); block of the ERK activation normalizes enterocytes proliferation in CD mucosa. In conclusion the same pathway, which gliadin and gliadin peptide P31-43 can interfere with, is constitutively altered in CD cells. This observation potentially explains the specificity of the damaging effects of certain gliadin peptides on CD intestine.


Assuntos
Doença Celíaca/metabolismo , Doença Celíaca/patologia , Enterócitos/metabolismo , Enterócitos/patologia , Transdução de Sinais , Adolescente , Biópsia , Doença Celíaca/genética , Proliferação de Células , Criança , Pré-Escolar , Fator de Crescimento Epidérmico/genética , Fator de Crescimento Epidérmico/metabolismo , Receptores ErbB/metabolismo , MAP Quinases Reguladas por Sinal Extracelular/metabolismo , Humanos , Lactente , Mucosa Intestinal/metabolismo , Mucosa Intestinal/patologia , Fosforilação
20.
PLoS One ; 8(11): e79763, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-24278174

RESUMO

Celiac disease (CD) is a frequent inflammatory intestinal disease, with a genetic background, caused by gliadin-containing food. Undigested gliadin peptides P31-43 and P57-68 induce innate and adaptive T cell-mediated immune responses, respectively. Alterations in the cell shape and actin cytoskeleton are present in celiac enterocytes, and gliadin peptides induce actin rearrangements in both the CD mucosa and cell lines. Cell shape is maintained by the actin cytoskeleton and focal adhesions, sites of membrane attachment to the extracellular matrix. The locus of the human Lipoma Preferred Partner (LPP) gene was identified as strongly associated with CD using genome-wide association studies (GWAS). The LPP protein plays an important role in focal adhesion architecture and acts as a transcription factor in the nucleus. In this study, we examined the hypothesis that a constitutive alteration of the cell shape and the cytoskeleton, involving LPP, occurs in a cell compartment far from the main inflammation site in CD fibroblasts from skin explants. We analyzed the cell shape, actin organization, focal adhesion number, focal adhesion proteins, LPP sub-cellular distribution and adhesion to fibronectin of fibroblasts obtained from CD patients on a Gluten-Free Diet (GFD) and controls, without and with treatment with A-gliadin peptide P31-43. We observed a "CD cellular phenotype" in these fibroblasts, characterized by an altered cell shape and actin organization, increased number of focal adhesions, and altered intracellular LPP protein distribution. The treatment of controls fibroblasts with gliadin peptide P31-43 mimics the CD cellular phenotype regarding the cell shape, adhesion capacity, focal adhesion number and LPP sub-cellular distribution, suggesting a close association between these alterations and CD pathogenesis.


Assuntos
Doença Celíaca/metabolismo , Proteínas do Citoesqueleto/metabolismo , Gliadina/toxicidade , Proteínas com Domínio LIM/metabolismo , Fragmentos de Peptídeos/toxicidade , Células Cultivadas , Dieta Livre de Glúten/efeitos adversos , Feminino , Fibroblastos/efeitos dos fármacos , Fibroblastos/metabolismo , Estudo de Associação Genômica Ampla , Humanos , Masculino
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