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1.
Eur J Neurol ; 26(2): 205-e15, 2019 02.
Artículo en Inglés | MEDLINE | ID: mdl-30300463

RESUMEN

The International League against Epilepsy (ILAE) proposed a diagnostic scheme for psychogenic non-epileptic seizure (PNES). The debate on ethical aspects of the diagnostic procedures is ongoing, the treatment is not standardized and management might differ according to age group. The objective was to reach an expert and stakeholder consensus on PNES management. A board comprising adult and child neurologists, neuropsychologists, psychiatrists, pharmacologists, experts in forensic medicine and bioethics as well as patients' representatives was formed. The board chose five main topics regarding PNES: diagnosis; ethical issues; psychiatric comorbidities; psychological treatment; and pharmacological treatment. After a systematic review of the literature, the board met in a consensus conference in Catanzaro (Italy). Further consultations using a model of Delphi panel were held. The global level of evidence for all topics was low. Even though most questions were formulated separately for children/adolescents and adults, no major age-related differences emerged. The board established that the approach to PNES diagnosis should comply with ILAE recommendations. Seizure induction was considered ethical, preferring the least invasive techniques. The board recommended looking carefully for mood disturbances, personality disorders and psychic trauma in persons with PNES and considering cognitive-behavioural therapy as a first-line psychological approach and pharmacological treatment to manage comorbid conditions, namely anxiety and depression. Psychogenic non-epileptic seizure management should be multidisciplinary. High-quality long-term studies are needed to standardize PNES management.


Asunto(s)
Trastornos Psicofisiológicos/terapia , Convulsiones/terapia , Adulto , Niño , Electroencefalografía/métodos , Femenino , Humanos , Masculino , Trastornos Psicofisiológicos/diagnóstico , Convulsiones/diagnóstico
3.
Eat Weight Disord ; 17(3): e219-25, 2012 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-22362378

RESUMEN

AIM: To validate a silhouette-based scale, the Body Image Dimensional Assessment (BIDA), an instrument for the screening of body dissatisfaction in large samples. MATERIALS AND METHODS: Five-hundred ninety-two both gender non-clinical participants and 57 patients with eating disorders (ED) were administered the BIDA and the Body Dissatisfaction subscale of the Eating Disorder Inventory 2 (BD-EDI2). The BIDA consists of only 4 items to answer with reference to a series of four silhouettes not age- nor gender-related using a numeric scale that allows the quantification of the degree of Body Dissatisfaction, Sexual Body Dissatisfaction, Comparative Body Dissatisfaction and the calculation of the final Body Dissatisfaction Index (BDI). RESULTS AND CONCLUSIONS: The study has shown that the BIDA has good reliability and validity as well as high predictive capability at a threshold BDI≥30 (sensitivity = 83.3% and specificity = 92.1%). By virtue of the rapid timing of administration, the BIDA can be a useful screening instrument of body dissatisfaction in non clinical populations to detect people at risk for ED and a follow-up instrument in clinical setting.


Asunto(s)
Trastorno Dismórfico Corporal/diagnóstico , Trastornos de Alimentación y de la Ingestión de Alimentos/diagnóstico , Adolescente , Adulto , Imagen Corporal , Estudios de Casos y Controles , Femenino , Humanos , Masculino , Tamizaje Masivo , Persona de Mediana Edad , Psicometría/instrumentación , Reproducibilidad de los Resultados , Sensibilidad y Especificidad , Encuestas y Cuestionarios
4.
Eat Weight Disord ; 17(4): e226-33, 2012 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-22361450

RESUMEN

Striving for enhancing athletic performance, many sportsmen undergo rigid dietary habits, which could lead to eating disorders (EDs) or Orthorexia Nervosa (ON), a psychopathological condition characterized by the obsession for high quality food. The aim of the study was to examine the occurrence of ON in athletes and to verify the relationship between ON and EDs. Five-hundred-seventy-seven athletes and 217 matched controls were administered the following tests: ORTO-15, Eating Attitude Test 26 (EAT-26), Body Uneasiness Test (BUT) and Yale-Brown-Cornell Eating Disorder Scale (YBC-EDS). High positivity to ORTO-15 (28%) and EAT-26 (14%) emerged in athletes, whereas a high rate of BUT positivity was evident among controls (21%). Multivariate logistic regression analysis revealed that independent predictors of ON are previous dieting, age, positivity to YBC-EDS, positivity to EAT-26, competition level, and number of YBC-EDS preoccupations and rituals. Sharing many features with both EDs and Obsessive-Compulsive Spectrum, ON represents a crossroad between these pathologic conditions and might compromise the health state of an athlete. Therefore, coaches should consider important to detect symptoms of EDs and ON in their athletes.


Asunto(s)
Atletas/psicología , Conducta Alimentaria/psicología , Trastornos de Alimentación y de la Ingestión de Alimentos/diagnóstico , Trastorno Obsesivo Compulsivo/diagnóstico , Adolescente , Adulto , Actitud Frente a la Salud , Estudios de Casos y Controles , Femenino , Humanos , Modelos Logísticos , Masculino , Persona de Mediana Edad , Escalas de Valoración Psiquiátrica , Encuestas y Cuestionarios , Adulto Joven
5.
Psychiatry Res ; 272: 698-706, 2019 02.
Artículo en Inglés | MEDLINE | ID: mdl-30832189

RESUMEN

OBJECTIVES: To identify the variables that are associated with persistence to Aripiprazole-Long Acting (A-LAI), in adult patients with schizophrenia. METHODS: Observational, retrospective, non-interventional study involving 261 patients with schizophrenia. RESULTS: Eighty-six percent of study subjects were persistent for at least 6 months. All subjects with baseline CGI-S of 1 or 2, 95% of subjects with CGI-S of 3, 86% with CGI-S of 4, 82% of subjects with CGI-S of 5, 73% of subjects with CGI of 6 and 90% of subjects with CGI of 7 were persistent. A-LAI treatment continuation rate was higher in patients with: 1) baseline CGI score ≤ 4; 2) schizophrenia dimension (LDPS) mania score ≤ 5; 3) psychotic spectrum schizoid score ≤ 11. CONCLUSIONS: A relatively high number of patients (n = 225, 86%) were persistent to A-LAI for at least 6 months. Not surprisingly, very severe patients were more unlikely to be persistent. However, it is noteworthy that a large number of subjects with high CGI score at the time when A-LAI was started (82% of subjects with CGI-S of 5, 73% of subjects with CGI of 6 and 90% of subjects with CGI of 7) were persistent. Larger, controlled, prospective and longer studies are warranted.


Asunto(s)
Antipsicóticos/uso terapéutico , Aripiprazol/uso terapéutico , Esquizofrenia/tratamiento farmacológico , Adulto , Preparaciones de Acción Retardada/uso terapéutico , Femenino , Humanos , Italia , Masculino , Cumplimiento de la Medicación , Persona de Mediana Edad , Estudios Retrospectivos , Resultado del Tratamiento
6.
Leg Med (Tokyo) ; 32: 79-82, 2018 May.
Artículo en Inglés | MEDLINE | ID: mdl-29587181

RESUMEN

Suicide is a huge deal in general public health, representing the second cause of mortality in young people worldwide. The suicidal setting analysis is usually performed through psychological autopsy, a method of investigation commonly used to study what leads to suicide. Psychological autopsy, though, requires the involvement of family and friends, or the finding of a diary or a suicide note. Nowadays, this is not always possible, especially during adolescence, the more if we consider new categories of people that are more used to live in a web dimension, than in a real one. So, with the advent of a new kind of social system including the web, psychological autopsy, as we know it, is not enough to determine the setting of an event. We here report the case of a 17-year old girl who committed suicide by hanging down from her house, leaving no suicide note. We propose a new investigation method developed through the analysis of phone messages and Facebook profile in order to better reconstruct the event. Although the standing difficulties in reconsidering the intimate motivations leading to such a decision, psychological autopsy nowadays needs to consider also social networks in order to prevent similar situations and even reconstruct the psychological dimension of the fact. We propose a model of Social-mobile autopsy.


Asunto(s)
Autopsia , Psiquiatría Forense/métodos , Suicidio/psicología , Humanos
7.
Int J Immunopathol Pharmacol ; 20(1 Suppl 1): 93-6, 2007.
Artículo en Inglés | MEDLINE | ID: mdl-17897509

RESUMEN

The demineralization of dentin obtained by treatment with a chelating agent ethylene diamminotetracetic acid (EDTA) or ethylene glycol-bis(beta-aminoethyl ether)-N-tetraacetic acid (EGTA), is a dynamic process involving chelation and solubilization. The actions of the EDTA and EGTA on dentin are influenced by the pH. Increasing mM concentrations of EDTA or EGTA the equivalent pH decreases in a similar slope to 80 mM chelator concentration. Increasing the chelator concentration different data were obtained: with EGTA the pH decreases slightly while with EDTA goes back up to the initial values. After 80 mM, EDTA reduces the activity on the dentin, and EGTA continues to work at higher concentrations. We demonstrated that EGTA solubilized more of 60 percent of dentin while EDTA gives about 20% at the maximal of the solubility.


Asunto(s)
Quelantes/farmacología , Dentina/efectos de los fármacos , Ácido Egtácico/farmacología , Endodoncia , Desmineralización Dental/inducido químicamente , Ácido Edético/farmacología , Humanos , Concentración de Iones de Hidrógeno
8.
Arch Gerontol Geriatr ; 44 Suppl 1: 199-206, 2007.
Artículo en Inglés | MEDLINE | ID: mdl-17317453

RESUMEN

Drug-induced delirium is a common matter in the elderly and anticholinergics, together with a number of different drugs, may significantly contribute to the delirium onset, especially in demented people. We report a case of a probable anticholinergic drug-induced delirium in an elderly patient. An 80-year-old man with Alzheimer's dementia presented with wandering, depressed mood with crying, somatic worries, anedonism and suicide recurrent ideas. A first external psychiatric assessment led to the diagnosis of melancholic depression and therapy with haloperidol 2mg/day, orphenadrine 100mg daily, amitriptyline 40 mg/day, lorazepam 2mg/day was started. Two weeks later patient suddenly developed delirium, characterized by nocturnal agitation, severe insomnia, daytime sedation, confusion, hallucinations and persecutory delusions. These symptoms progressively worsened, with the consequent caregiver's stress. A geriatric consultation excluded the main causes of delirium, therefore both Operative Units of Pharmacovigilance and Psychiatry were activated, for a clinical pharmacological and psychiatric assessment. Haloperidol, amitriptyline and orphenadrine were promptly dismissed. The patient began a treatment with quetiapine 25mg/day for two days, then twice a day, and infusion of saline 1000 ml/day for two days; psychiatric symptoms gradually diminished and therapy with galantamine was begun. We postulate that this clinical report is suggestive for an anticholinergic drug- induced delirium since the Naranjo probability scale indicated a probable relationship between delirium and drug therapy. In conclusion, a complete geriatric, pharmacological, and psychiatric evaluation might be necessary in order to reduce the adverse drug reactions in older patients treated with many drugs.


Asunto(s)
Enfermedad de Alzheimer/tratamiento farmacológico , Antagonistas Colinérgicos/efectos adversos , Delirio/inducido químicamente , Enfermedad Aguda , Anciano de 80 o más Años , Amitriptilina/uso terapéutico , Antipsicóticos/uso terapéutico , Trastorno Depresivo Mayor/tratamiento farmacológico , Trastorno Depresivo Mayor/psicología , Quimioterapia Combinada , Moduladores del GABA/uso terapéutico , Haloperidol/uso terapéutico , Humanos , Lorazepam/uso terapéutico , Masculino , Orfenadrina/uso terapéutico
9.
Prog Neurobiol ; 61(4): 353-96, 2000 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-10727780

RESUMEN

Depression in the elderly is nowadays a predominant health care problem, mainly due to the progressive aging of the population. It results from psychosocial stress, polypathology, as well as some biochemical changes which occur in the aged brain and can lead to cognitive impairments, increased symptoms from medical illness, higher utilization of health care services and increased rates of suicide and nonsuicide mortality. Therefore, it is very important to make an early diagnosis and a suitable pharmacological treatment, not only for resolving the acute episode, but also for preventing relapse and enhancing the quality of life. Age-related changes in pharmacokinetics and in pharmacodynamics have to be kept into account before prescribing an antidepressant therapy in an old patient. In this paper some of the most important and tolerated drugs in the elderly are reviewed. Tricyclic antidepressants have to be used carefully for their important side effects. Nortriptyline, amytriptiline, clomipramine and desipramine as well, seem to be the best tolerated tricyclics in old people. Second generation antidepressants are preferred for the elderly and those patients with heart disease as they have milder side effects and are less toxic in overdose and include the so called atypicals, such as selective serotonin reuptake inhibitors, serotonin noradrenalene reuptake inhibitors and noradrenaline reuptake inhibitors. Monoamine oxidase (MAO) inhibitors are useful drugs in resistant forms of depression in which the above mentioned drugs have no efficacy; the last generation drugs (reversible MAO inhibitors), such as meclobemide, seem to be very successful. Mood stabilizing drugs are widely used for preventing recurrences of depression and for preventing and treating bipolar illness. They include lithium, which is sometimes used especially to prevent recurrence of depression, even if its use is limited in old patients for its side effects, the anticonvulsants carbamazepine and valproic acid. Putative last generation mood stabilizing drugs include the dihydropyridine L-type calcium channel blockers and the anticonvulsants phenytoin, lamotrigine, gabapentin and topiramate, which have unique mechanisms of action and also merit further systematic study. Psychotherapy is often used as an adjunct to pharmacotherapy, while electroconvulsant therapy is used only in the elderly patients with severe depression, high risk of suicide or drug resistant forms.


Asunto(s)
Anciano/fisiología , Antidepresivos/farmacología , Antidepresivos/uso terapéutico , Depresión/tratamiento farmacológico , Afecto/efectos de los fármacos , Depresión/diagnóstico , Depresión/epidemiología , Depresión/metabolismo , Humanos , Incidencia , Hígado/efectos de los fármacos , Hígado/enzimología , Inhibidores de la Monoaminooxidasa/farmacología , Inhibidores de la Monoaminooxidasa/uso terapéutico , Prevalencia , Receptores Adrenérgicos/metabolismo , Receptores Dopaminérgicos/metabolismo , Receptores de GABA-B/metabolismo , Receptores de Serotonina/metabolismo
10.
Cancer Res ; 61(2): 462-8, 2001 Jan 15.
Artículo en Inglés | MEDLINE | ID: mdl-11212232

RESUMEN

Angiogenesis is an essential step in the progression of tumor formation and development. The switch to an angiogenetic phenotype can occur as a distinct step before progression to a neoplastic phenotype and is linked to genetic changes such as mutations in key cell cycle regulatory genes. The pathogenesis of the angiogenetic phenotype may involve the inactivation of tumor suppressor genes such as the "guardian of the genome," p53, and the cyclin-dependent kinase inhibitor p16. Retinoblastoma family member RB2/p130 encodes a cell cycle regulatory protein and has been found mutated in different tumor types. Overexpression of RB2/p130 not only suppresses tumor formation in nude mice but also causes regression of established tumor grafts, suggesting that RB2/p130 may modulate the angiogenetic balance. We found that induction of RB2/p130 expression using a tetracycline-regulated gene expression system as well as retroviral and adenoviral-mediated gene delivery inhibited angiogenesis in vivo. This correlated with pRb2/p130-mediated down-regulation of vascular endothelial growth factor protein expression both in vitro and in vivo.


Asunto(s)
Factores de Crecimiento Endotelial/genética , Linfocinas/genética , Neovascularización Patológica/genética , Fosfoproteínas/genética , Proteínas , Animales , Northern Blotting , Línea Celular , Regulación hacia Abajo , Factores de Crecimiento Endotelial/análisis , Femenino , Regulación de la Expresión Génica , Terapia Genética , Humanos , Inmunoquímica , Linfocinas/análisis , Ratones , Ratones Desnudos , Trasplante de Neoplasias , Neoplasias Experimentales/irrigación sanguínea , Neoplasias Experimentales/genética , Neoplasias Experimentales/terapia , Neovascularización Patológica/metabolismo , Neovascularización Patológica/terapia , Fosfoproteínas/análisis , Molécula-1 de Adhesión Celular Endotelial de Plaqueta/análisis , ARN/genética , ARN/metabolismo , Proteína p130 Similar a la del Retinoblastoma , Trasplante Heterólogo , Células Tumorales Cultivadas , Factor A de Crecimiento Endotelial Vascular , Factores de Crecimiento Endotelial Vascular
11.
Int J Soc Psychiatry ; 62(3): 252-61, 2016 May.
Artículo en Inglés | MEDLINE | ID: mdl-26896027

RESUMEN

AIMS: This article aims to (1) explore the levels of perceived insecurity in a sample of patients with mood or anxiety disorders and (2) assess whether living in 'big cities' can influence the levels of patients' perceived insecurity and social contacts compared to living in a non-urbanized context. METHODS: A total of 24 Italian mental health centers (MHCs) have been invited to participate. Twenty patients consecutively accessing the MHC have been recruited. All patients have been assessed using validated assessment tools. RESULTS: The sample consisted of 426 patients, mostly female, with a mean age of 45 years. Globally, 52.2% of patients had a diagnosis of mood disorders, and 37.8% had anxiety disorders. Half of the sample declared that the main feeling toward life is uncertainty; higher levels of pessimistic views toward life have been detected in patients living in urban areas. A positive association between negative attitudes toward life and higher levels of depressive and anxiety symptoms, poor social functioning and higher levels of perceived psychological distress has been found. CONCLUSION: Our findings confirm the presence of a common sense of perceived uncertainty among our sample. Such attitude toward life can have a detrimental impact on patients' psychological and physical well-being, contributing to high levels of distress.


Asunto(s)
Trastornos de Ansiedad/epidemiología , Salud Mental , Trastornos del Humor/epidemiología , Incertidumbre , Urbanización/tendencias , Adulto , Femenino , Hospitales Psiquiátricos , Humanos , Italia/epidemiología , Masculino , Persona de Mediana Edad , Percepción , Escalas de Valoración Psiquiátrica , Calidad de Vida/psicología , Encuestas y Cuestionarios , Salud Urbana
12.
Leukemia ; 4(6): 426-30, 1990 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-2359342

RESUMEN

We have studied tumor necrosis factor alpha (TNF-alpha) for its capacity to induce differentiation and to modulate c-myc and c-fms protooncogene mRNA expression in fresh blasts from 10 patients with acute myeloblastic leukemia (AML). Bone marrow blast cells were grown in suspension cultures in the presence of 500 U/ml (62 ng/ml) of TNF-alpha for 7 days. Induction of differentiation was assessed by means of morphology, cytochemistry, immunophenotyping (CD11b, CD13, CD14, CD33), and nitroblue tetrazolium reduction. In all cases, exposure of leukemic blasts to TNF-alpha resulted in phenotypic changes consistent with induction of differentiation, although a marked variability in degree and type of response was observed. The majority of cases developed monocytic morphology and showed significant increases (chi 2 test, p less than 0.05) in phagocytic activity and/or expression of ANAE and myelomonocytic differentiation antigens (CD11b, CD14). TNF-alpha reduced c-myc mRNA level over a period of 24 hr in four of six cases studied: the two cases with no down-regulation were the least responsive in terms of myelomonocytic differentiation. These results confirm those obtained with leukemic cell lines, suggesting that TNF-alpha can induce differentiation of fresh AML blasts, mainly toward the monocytic lineage, and that induction of differentiation seems to be closely linked to down-regulation of c-myc mRNA expression over the first 24 hr rather than to attenuation of cellular proliferation per se.


Asunto(s)
Regulación hacia Abajo , Regulación Neoplásica de la Expresión Génica , Leucemia Mieloide Aguda/genética , Monocitos/patología , Proto-Oncogenes , ARN Mensajero/genética , Factor de Necrosis Tumoral alfa/farmacología , Médula Ósea/patología , Diferenciación Celular , Distribución de Chi-Cuadrado , Humanos , Leucemia Mieloide Aguda/metabolismo , Leucemia Mieloide Aguda/patología , ARN Mensajero/metabolismo , Células Tumorales Cultivadas/metabolismo , Células Tumorales Cultivadas/patología
13.
Clin Ter ; 166(5): e330-4, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26550819

RESUMEN

BACKGROUND AND OBJECTIVES: Previous research has suggest that obesity is associated with increased risk for psychopathological disorders, however, little is known about which obese patients are most vulnerable to psychopathological disorders. We therefore investigated 126 treatment-seeking obese women to describe eating disorder pathology and mental health correlates, and to identify disordered eating behaviors that may place obese at increased risk for psychopathological disorders. MATERIALS AND METHODS: The Structured Clinical Interview for DSM-IV (SCID) was used to identify Eating Disorders (ED). A battery of psychological tests, including the Anxiety Scale Questionnaire (ASQ,) Clinical Depression Questionnaire (CDQ), Eating Disorder Inventory-2 (EDI-2) Eating Attitudes Test-26 (EAT-26) scales and structured clinical interview were administered to all the patients. We analyzed the link between psychopathological disorders and eating attitudes by using both multiple regression analysis and non-parametric correlation. RESULTS: Disordered eating behaviors and emotional behavioral aspects related to Anorexia Nervosa, such as ineffectiveness, are strongly linked to the depression and anxiety in obese subjects. No correlation was found between psychopathological disorders and age or anthropometric measurements. CONCLUSIONS: Findings corroborate earlier work indicating that psychological distress is elevated in obese treatment seeking, bolstering the need for mental health assessment of such individuals. The feeling of ineffectiveness constitutes the major predictor of psychopathological aspects. This is an important result which may inform the development of effective interventions for obese patients and prevention of psychopathological disorders.


Asunto(s)
Trastornos de Alimentación y de la Ingestión de Alimentos/epidemiología , Salud Mental , Obesidad/epidemiología , Obesidad/psicología , Adulto , Anciano , Anorexia Nerviosa/epidemiología , Ansiedad/epidemiología , Depresión/epidemiología , Manual Diagnóstico y Estadístico de los Trastornos Mentales , Conducta Alimentaria , Femenino , Humanos , Persona de Mediana Edad , Pruebas Psicológicas , Encuestas y Cuestionarios
14.
Biomed Res Int ; 2015: 708908, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26557692

RESUMEN

BACKGROUND: Although the prevalence of work-limiting diseases is increasing, the interplay between occupational exposures and chronic medical conditions remains largely uncharacterized. Research has shown the detrimental effects of workplace bullying but very little is known about the humanistic and productivity cost in victims with chronic illnesses. We sought to assess work productivity losses and health disutility associated with bullying among subjects with chronic medical conditions. METHODS: Participants (N = 1717) with chronic diseases answered a self-administered survey including sociodemographic and clinical data, workplace bullying experience, the SF-12 questionnaire, and the Work Productivity Activity Impairment questionnaire. RESULTS: The prevalence of significant impairment was higher among victims of workplace bullying as compared to nonvictims (SF-12 PCS: 55.5% versus 67.9%, p < 0.01; SF-12 MCS: 59.4% versus 74.3%, p < 0.01). The adjusted marginal overall productivity cost of workplace bullying ranged from 13.9% to 17.4%, corresponding to Italian Purchase Power Parity (PPP) 2010 US$ 4182-5236 yearly. Association estimates were independent and not moderated by concurrent medical conditions. CONCLUSIONS: Our findings demonstrate that the burden on workers' quality of life and productivity associated with workplace bullying is substantial. This study provides key data to inform policy-making and prioritize occupational health interventions.


Asunto(s)
Acoso Escolar/estadística & datos numéricos , Enfermedad Crónica/economía , Enfermedad Crónica/psicología , Enfermedades Profesionales/economía , Enfermedades Profesionales/psicología , Lugar de Trabajo/economía , Lugar de Trabajo/psicología , Adulto , Enfermedad Crónica/epidemiología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Enfermedades Profesionales/epidemiología , Calidad de Vida , Lugar de Trabajo/estadística & datos numéricos
15.
Leuk Res ; 16(8): 829-36, 1992 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-1382173

RESUMEN

Factor XIII (FXIII) is a plasma pro-transglutaminase consisting of A and B subunits in a tetrameric structure. A cellular form of FXIII consisting exclusively of A subunits exists in platelets and monocytes: monocyte FXIII may be involved in connective tissue organization. To evaluate the expression and diagnostic significance of FXIII A subunit (FXIIIA) in acute leukemia, we performed an immunocytochemical study (PAP technique) with rabbit antiserum against FXIIIA on leukemic blasts of 48 cases. FXIIIA was detected only in myelomonocytic (M4), monocytic (M5) and megakaryocytic (M7) cases: in M4 and M5 samples the amount of blast cytoplasmic FXIIIA was closely correlated with the expression of monocyte-specific antigenic and cytochemical markers. Our data show immunocytochemical detection of FXIIIA to be useful for acute leukemia characterization.


Asunto(s)
Leucemia/metabolismo , Transglutaminasas/metabolismo , Enfermedad Aguda , Antígenos CD/metabolismo , Antígenos de Diferenciación Mielomonocítica/metabolismo , Biomarcadores de Tumor/metabolismo , Médula Ósea/metabolismo , Humanos , Inmunohistoquímica , Leucemia/inmunología , Leucemia Monocítica Aguda/metabolismo , Leucemia Mielomonocítica Aguda/metabolismo , Receptores de Lipopolisacáridos , Trombocitemia Esencial/metabolismo
16.
J Dent Res ; 83(4): 312-6, 2004 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-15044505

RESUMEN

Nitric oxide synthase (NOS) plays a significant role in the pathogenesis of pulpitis. In this study, we hypothesized the existence of endothelial (eNOS) and inducible (iNOS) enzyme isoforms in human dental pulp. Extracted third molar pulps were divided into groups based on clinical diagnosis: healthy, hyperemic, and irreversible pulpitis. We have localized the eNOS and iNOS by immunohistochemistry and have tested their mRNA expression by RT-PCR and protein levels by Western blots. eNOS is present in the endothelial cells and odontoblasts of the healthy pulp, but an elevation of eNOS mRNA and protein levels with a concomitant dilation of vessels was characteristic under pathological conditions. Healthy pulp tissue failed to exhibit any iNOS; however, acute inflammation enhanced the mRNA and protein levels of iNOS, mainly in the leukocytes. There are differences in localization and expression between eNOS and iNOS in healthy and inflamed dental pulp.


Asunto(s)
Pulpa Dental/enzimología , Hiperemia/enzimología , Óxido Nítrico Sintasa/metabolismo , Pulpitis/enzimología , Adulto , Pulpa Dental/citología , Pulpa Dental/patología , Células Endoteliales/enzimología , Células Endoteliales/patología , Humanos , Hiperemia/patología , Procesamiento de Imagen Asistido por Computador , Técnicas In Vitro , Inflamación/enzimología , Isoenzimas/metabolismo , Tercer Molar/enzimología , Tercer Molar/patología , Óxido Nítrico Sintasa/genética , Óxido Nítrico Sintasa de Tipo II , Óxido Nítrico Sintasa de Tipo III , Odontoblastos/enzimología , Odontoblastos/patología , Pulpitis/patología , ARN Mensajero/análisis , Valores de Referencia , Vasodilatación/fisiología
17.
Life Sci ; 68(3): 297-306, 2000 Dec 08.
Artículo en Inglés | MEDLINE | ID: mdl-11191645

RESUMEN

Nitric oxide synthases (NOS) are important enzymes present in different cells such as endothelial cells, macrophages, etc. Recently, it has been found that nitric oxide (NO) is responsible for vasodilation, blood pressure regulation, platelet aggregation, cardiac contractility, and the mediation of immunity during bacterial infections and inflammation. However, the production and role of NO in various structures of the oral cavity have not been investigated extensively. The aim of this study was to evaluate the presence of e-NOS in healthy human odontoblasts and endothelial cells of the dental pulp. Twenty healthy human dental pulps were collected and frozen and pulp slices were obtained using a cryostat. The e-NOS enzyme was revealed by immunohistochemical analysis and the enzyme level was detected by Western blotting and mRNA expression by RT-PCR. The immunohistochemical results demonstrated, for the first time, the presence of e-NOS in odontoblasts and in endothelial cells. The presence of e-NOS m-RNA was confirmed by RT-PCR and the expression of the protein by Western blotting. These results clearly show that the e-NOS enzyme is present in both odontoblasts and endothelial cells of healthy human pulp. The presence of e-NOS in the odontoblast and endothelial cells of the dental pulp may mediate local vasodilation and cell proliferation.


Asunto(s)
Pulpa Dental/enzimología , Endotelio Vascular/enzimología , Óxido Nítrico Sintasa/metabolismo , Odontoblastos/enzimología , Western Blotting , Pulpa Dental/irrigación sanguínea , Pulpa Dental/citología , Endotelio Vascular/citología , Humanos , Técnicas para Inmunoenzimas , Óxido Nítrico Sintasa/genética , Óxido Nítrico Sintasa de Tipo III , Odontoblastos/citología , ARN/análisis , ARN Mensajero , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa
18.
J Biol Regul Homeost Agents ; 14(4): 269-74, 2000.
Artículo en Inglés | MEDLINE | ID: mdl-11215815

RESUMEN

In the thymus most deleted cells are immature thymocytes and the high rate of cell death within the thymus is involved in the development of the initial T-cell receptor repertoire. Functional T-cell receptor recognition units are created by somatic rearrangements of gene segments, and the expression of successfully assembled TCR complex is the key to molecular events that culminate in T-cell activation, growth and differentiation. Previously, we reported that DMSO induces apoptosis in RPMI-8402 human pre-T cells. Here we examine the fate of pre-T cells undergoing negative selection analysing the responsiveness to DMSO-enforced TCR expression and immunophenotype modulation. Our results demonstrate that DMSO induces cell growth inhibition, cell phenotype changes, with down-regulation of CD2 and CD7, and increases in alpha/beta or gamma/delta TCR chains led by TdT, RAG-1 and RAG-2 activity. These modifications are associated with an apoptotic program. Taken together, these data suggest the existence of an early checkpoint that ensures in vivo the effective intrathymic differentiation supported from another point of view, the linkage between immunophenotypes and TCR regulation in T-cell differentiation and programmed cell death.


Asunto(s)
Apoptosis/efectos de los fármacos , Apoptosis/inmunología , Dimetilsulfóxido/farmacología , Receptores de Antígenos de Linfocitos T/metabolismo , Linfocitos T/efectos de los fármacos , Linfocitos T/inmunología , Antígenos CD/metabolismo , Diferenciación Celular , Expresión Génica/efectos de los fármacos , Humanos , Inmunofenotipificación , ARN Mensajero/genética , ARN Mensajero/metabolismo , Receptores de Antígenos de Linfocitos T/genética , Linfocitos T/citología , Células Tumorales Cultivadas
19.
J Endod ; 26(6): 368-70, 2000 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-11199757

RESUMEN

This paper reports two clinical aids for the removal of broken instruments in root canals using a combination of hand instrumentation and ultrasonic devices. This technique is based on two phases: hand instrumentation with stainless-steel K-file instruments for bypassing the fragments, and K-files mounted on an ultrasonic handpiece for loosening and retrieval of the broken instruments. This method offers the following advantages: conservation of the remaining dentin wall of the root canal and elimination of the necessity for surgical treatment.


Asunto(s)
Cavidad Pulpar , Cuerpos Extraños/terapia , Preparación del Conducto Radicular/instrumentación , Adulto , Dentina/ultraestructura , Diseño de Equipo , Falla de Equipo , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Irrigantes del Conducto Radicular/uso terapéutico , Preparación del Conducto Radicular/efectos adversos , Acero Inoxidable , Propiedades de Superficie , Terapia por Ultrasonido/instrumentación
20.
J Endod ; 25(5): 351-3, 1999 May.
Artículo en Inglés | MEDLINE | ID: mdl-10530260

RESUMEN

The aim of this study was to test the effect of different concentrations of sodium hypochlorite, chlorhexidine, and cetrimide on the following bacterial strains: Facultative aerobes-anaerobes: Candida albicans ATCC 10231; Enterococcus faecalis ATCC 29212; Escherichia coli ATCC 25,922; Pseudomonas aeruginosa ATCC 27,853; Streptococcus mitis ATCC 9811; Streptococcus mutans ATCC 35668; Streptococcus salivarius ATCC 13419; and Streptococcus sanguis ATCC 10556. Microaerophiles: Actinobacillus actinomycetemcomitans ATCC 29522. Obligate anaerobes: Actinomyces odontolyticus ATCC 17929; Fusobacterium nucleatum ATCC 25,586; Porphyromonas gingivalis ATCC 33277; and Prevotella melaninogenica ATCC 25845. Each irrigant was kept in contact with the bacterial species used for the experiment for 10, 20, or 30 min. Results showed that all irrigants had a bactericidal effect on both facultative aerobes-anaerobes and on microaerophilic and obligate anaerobic strains, in all concentrations and even after short periods of contact.


Asunto(s)
Antiinfecciosos Locales/farmacología , Bacterias Anaerobias/efectos de los fármacos , Irrigantes del Conducto Radicular/farmacología , Antiinfecciosos Locales/administración & dosificación , Cetrimonio , Compuestos de Cetrimonio/administración & dosificación , Compuestos de Cetrimonio/farmacología , Clorhexidina/administración & dosificación , Clorhexidina/farmacología , Recuento de Colonia Microbiana , Relación Dosis-Respuesta a Droga , Ácido Edético/administración & dosificación , Ácido Edético/farmacología , Irrigantes del Conducto Radicular/administración & dosificación , Hipoclorito de Sodio/administración & dosificación , Hipoclorito de Sodio/farmacología
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