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1.
J Assist Reprod Genet ; 38(2): 305-317, 2021 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-33405005

RESUMO

PURPOSE: We have been inquiring into the diffusion process of reproductive genetic services (RGS) and the viability of geneticization in human reproduction. METHOD: A 2-round modified-Delphi survey was applied amongst Israeli and Spanish experts to analyze regulatory attitudes and expectations about the future applications of RGS. We argue that an explanation of RGS diffusion based on a 'technology-push' impulse should be complemented by a 'demandpull' approach, which underscores the importance of regulatory frameworks and demand-inducing policies. The diffusion of RGS is advancing in a 'spiralshaped' process where technology acts as a cause and effect simultaneously, modulating social acceptance and redefining the notions of health and responsibility along the way. RESULTS: We suggest that there is a 'grey-zone' of RGS regulations regarding four procedures: the use of germline genome modification (GGM) for severe monogenic disorders, preimplantation genetic testing (PGT) for detection of chromosomal abnormalities, PGT for multifactorial diseases, and PGT with whole-exome screening. CONCLUSIONS: Although far from the geneticization of human reproduction, our findings suggest that, since techno-scientific imaginaries tend to shape regulations and thus favor the diffusion of RGS, policymakers should pay attention to those procedures by focusing on good practices and equity while providing sound information on potential risks and expected success rates. A broad and inclusive societal debate is critical for overcoming the difficulty of drawing a clear line between medical and non-medical uses of genetic selection and engineering while searching for the right balance between allowing reproductive autonomy and protecting the public interest.


Assuntos
Edição de Genes , Diagnóstico Pré-Implantação/tendências , Reprodução/genética , Técnicas de Reprodução Assistida/tendências , Feminino , Testes Genéticos/tendências , Genoma Humano/genética , Células Germinativas/metabolismo , Células Germinativas/patologia , Humanos , Masculino , Gravidez , Serviços de Saúde Reprodutiva/tendências , Medicina Reprodutiva/tendências
2.
J Assist Reprod Genet ; 36(8): 1665-1681, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31346936

RESUMO

PURPOSE: The market of assisted reproductive technologies (ARTs) is rapidly evolving, raising growing ethical and social dilemmas. This paper compares the regulatory responses to technological and market developments in Israel and Spain, both intensive users of ART. We identify strengths and deficiencies in the regulation of ART in these two countries. METHODS: We developed a conceptual framework to classify the factors affecting regulations and priority setting, and applied it using a Delphi survey combined with in-depth interviews. We selected two panels of experts from various fields, trying to simulate the bioethics committees of Israel and Spain. RESULTS: ART is often wrongfully perceived as a solution to age-related infertility. Both panels embraced alternative solutions. The impact of private commercial interest on regulations is resulting in excessive practices such as the repeat of ineffective cycles and the push of sometimes unnecessary treatment add-ons. Our findings show experts dissatisfaction with the regulations of donor-eggs concerning reimbursement and registries in both countries. CONCLUSIONS: The adequacy of ART to solve age-related infertility should be confronted with alternative approaches, with emphasis on the distribution of accurate information. The magnitude of ART markets, particularly the use of donor-eggs, should raise the need for additional societal debate and the reform of regulations. The impact factors analysis leads us to question the current regulatory framework, which could be improved by nominating a non-governmental statutory central regulatory agency in Israel and by reforming the Spanish agency.


Assuntos
Infertilidade/terapia , Sistema de Registros/estatística & dados numéricos , Técnicas de Reprodução Assistida/legislação & jurisprudência , Feminino , Humanos , Infertilidade/epidemiologia , Israel/epidemiologia , Gravidez , Resultado da Gravidez , Espanha/epidemiologia , Inquéritos e Questionários
3.
Artigo em Espanhol | IBECS | ID: ibc-109715

RESUMO

Winnicott fue uno de los responsables del abandono de algunos conceptos freudianos a favor de una transformación del psicoanálisis en una terapia relacional. En efecto, Winnicott difundió su obra en escritos y conferencias, especialmente en EE.UU. La psicología del yo y sobre todo el pensamiento de los culturalistas, especialmente H. S. Sullivan, desarrollaron en los EE.UU una tendencia “relacional”, expresada en los últimos años en su extremos por el pensamiento “intersubjetivo”. Las raíces de esas tendencias se pueden encontrar en Sandor Ferenczi y Winnicott que subrayaron que el terapeuta inevitablemente, además del insight, proporciona al paciente un nuevo y crucial tipo de experiencia relacional (AU)


Donald. W. Winnicott was responsable for the abandonment of several Freudian concepts in favor of a transformation of psychoanalysis into a relation therapy. Winnicot transmitted his work through writing and conferences, specially in the USA. Ego-psychology and the culturalists such as H. S. Sullivan developed a relational approach in the USA, expressed in the final years by inter-subjective thinking. The roots of these tendencies can be found in Sándor Ferenczi and Winnicott, whom underlined that the therapist apart from insight inevitably provides a new and crucial relational experience to the patient (AU)


Assuntos
Humanos , Psicanálise/história , Terapia Psicanalítica/métodos , Psicoterapia/métodos
4.
Neurochem Res ; 36(8): 1336-43, 2011 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-21475956

RESUMO

In the present study we have measured, on a monthly basis, the concentration of plasma homovanillic acid (pHVA) in schizophrenic patients during 13 months of their pharmacological treatment. The average pHVA values of each patient were within the range of 7.30-17.70 ng/ml and the coefficients of variation for each patient (CV %) were within the range of 13-33%. Half of the patients that showed higher pHVA CV% values also showed higher scores on the Brief Psychiatric Rating Scale at the beginning of the study, and improved more after 6 months, when compared to the remaining 50% with lower CV% values. There was no significant relationship between the scores of the Wisconsin Card Sort Test and the concentration or the CV% of the pHVA of each patient. A greater variability in the pHVA may be associated with a greater plasticity of the dopaminergic system and a better clinical response.


Assuntos
Antipsicóticos/uso terapêutico , Ácido Homovanílico/sangue , Escalas de Graduação Psiquiátrica , Esquizofrenia/sangue , Esquizofrenia/tratamento farmacológico , Esquizofrenia/fisiopatologia , Adulto , Feminino , Humanos , Masculino , Testes Neuropsicológicos , Adulto Jovem
5.
Artigo em Espanhol | IBECS | ID: ibc-91751

RESUMO

Este artículo resume los intentos realizados recientemente para encontrar una base neurofisiológica a conceptos tales como empatía e intersubjetividad. La empatía interviene como un “diálogo intersubjetivo” entre la madre y su niño, el psicoterapeuta y el paciente y en las interrelaciones humanas en general. Ese diálogo intersubjetivo, que había ya sido descrito por Julián Ajurriaguerra a partir de 1950 ha encontrado en los recientes hallazgos sobre las “neuronas espejo” una base fisiológica atractiva, aunque todavía no es totalmente extrapolable a los seres humanos (AU)


This paper summarises recent attempts to find neuronal bases to concepts such as empathy and intersubjectivity. Empathy intervenes as an “intersubjective dialogue” between the mother and her child, the patient and the therapist, and in all human relations. This intersubjective empathic dialogue, already described by Julián Ajuriaguerra in the 1950´s as “tonic dialogue” has found an attractive physiological base in the recent findings on “mirror neurons” although it still cannot be totally extrapolated to human beings (AU)


Assuntos
Humanos , Masculino , Feminino , Criança , Empatia , Sintomas Afetivos/psicologia , Transtornos do Comportamento Infantil/psicologia , Neurônios Aferentes/fisiologia , Teoria Psicológica , Neurofisiologia/tendências
6.
Neurochem Int ; 56(6-7): 774-9, 2010.
Artigo em Inglês | MEDLINE | ID: mdl-20206656

RESUMO

Metabolites of dopamine and norepinephrine measured in the plasma have long been associated with symptomatic severity and response to treatment in schizophrenic, bipolar and other psychiatric patients. Plasma concentrations of catecholamine metabolites are genetically regulated. The genes encoding enzymes that are involved in the synthesis and degradation of these monoamines are candidate targets for this genetic regulation. We have studied the relationship between the Val158Met polymorphism in catechol O-methyltransferase gene, variable tandem repeat polymorphisms in the monoamine oxidase A gene promoter, and plasma concentrations of 3-methoxy-4-hydroxyphenylglycol, 3,4-dihydroxyphenylacetic acid and homovanillic acid in healthy control subjects as well as in untreated schizophrenic and bipolar patients. We found that the Val158Met substitution in catechol O-methyltransferase gene influences the plasma concentrations of homovanillic and 3,4-dihydroxyphenylacetic acids. Although higher concentrations of plasma homovanillic acid were found in the high-activity ValVal genotype, this mutation did not affect the plasma concentration of 3-methoxy-4-hydroxyphenylglycol. 3,4-dihydroxyphenylacetic acid concentrations were higher in the low-activity MetMet genotype. Interestingly, plasma values 3-methoxy-4-hydroxyphenylglycol were greater in schizophrenic patients and in bipolar patients than in healthy controls. Our results are compatible with the previously reported effect of the Val158Met polymorphism on catechol O-methyltransferase enzymatic activity. Thus, our results suggest that this polymorphism, alone or associated with other polymorphisms, could have an important role in the genetic control of monoamine concentration and its metabolites.


Assuntos
Transtorno Bipolar/genética , Catecol O-Metiltransferase/genética , Catecolaminas/sangue , Monoaminoxidase/genética , Polimorfismo Genético/genética , Esquizofrenia/genética , Ácido 3,4-Di-Hidroxifenilacético/sangue , Adulto , Idoso , Análise de Variância , Transtorno Bipolar/sangue , Transtorno Bipolar/enzimologia , Feminino , Genótipo , Ácido Homovanílico/sangue , Humanos , Masculino , Metoxi-Hidroxifenilglicol/sangue , Pessoa de Meia-Idade , Repetições Minissatélites/genética , Regiões Promotoras Genéticas/genética , Esquizofrenia/sangue , Esquizofrenia/enzimologia
7.
Neurochem Res ; 35(2): 247-53, 2010 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-19701707

RESUMO

We have determined the plasma (p) concentration of gamma-aminobutyric acid (GABA) and the dopamine metabolite homovanillic acid (HVA), and the pHVA/pGABA ratio in schizophrenic and bipolar patients. The research was undertaken in a geographic area with an ethnically homogeneous population. The HVA plasma concentrations were significantly elevated in the schizophrenic patients compared to the bipolar patients. The levels of pGABA was significantly lower in the two groups of patients compared to the control group, while the pHVA/pGABA ratio was significantly greater in the both groups of patients compared to the controls. As the levels of pHVA and pGABA are partially under genetic control it is better to compare their concentrations within an homogeneous population. The values of the ratio pHVA/pGABA are compatible with the idea of an abnormal dopamine-GABA interaction in schizophrenic and bipolar patients. The pHVA/pGABA ratio may be a good peripheral marker in psychiatric research.


Assuntos
Transtorno Bipolar/sangue , Ácido Homovanílico/sangue , Esquizofrenia/sangue , Ácido gama-Aminobutírico/sangue , Adolescente , Adulto , Biomarcadores/sangue , Dopamina/metabolismo , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
8.
Psiquiatr. biol. (Ed. impr.) ; 16(3): 131-133, jul.-sept. 2009.
Artigo em Espanhol | IBECS | ID: ibc-77838

RESUMO

La catatonía es un síndrome motor que aparececon relativa frecuencia en nuestros pacientes y quemerecería un lugar propio en la nomenclaturapsiquiátrica. Así mejoraría su reconocimientodiagnóstico, se optimizaría su tratamiento y sereduciría su morbimortalidad. En el caso quepresentamos, se observa la dificultad diagnóstica queeste síndrome habitualmente lleva implícita. Además,con este caso clínico queremos destacar que laconfusión no sólo está en el ámbito de la psiquiatría,sino que se extiende a otras especialidades médicas (AU)


Catatonia is a relatively frequent motor syndromein psychiatric patients and deserves a place in thepsychiatric nomenclature. Such recognition wouldimprove diagnosis and optimize treatment, thusreducing morbidity and mortality due to this entity.We present a case that illustrates the difficulty ofdiagnosing this syndrome. Furthermore, in this casereport, we wish to highlight that the confusionsurrounding this syndrome affects not onlypsychiatry but also other medical specialties (AU)


Assuntos
Humanos , Eletroconvulsoterapia , Catatonia/diagnóstico , Catatonia/terapia
9.
Psiquiatr. biol. (Ed. impr.) ; 16(2): 94-96, mar.-abr. 2009.
Artigo em Espanhol | IBECS | ID: ibc-77258

RESUMO

El trastorno bipolar es una enfermedad crónica, caracterizada por remisiones y exacerbaciones, cuya evolución puede modificarse favorablemente con un tratamiento apropiado. Aunque el tratamiento de los episodios agudos es importante, la prevención de recaídas mediante un tratamiento de mantenimiento es el objetivo terapéutico principal. Se ha estimado que aproximadamente el 60% de la población diagnosticada de trastorno bipolar I experimenta de forma crónica dificultades en la actividad sociolaboral. Los síntomas subclínicos entre los episodios agudos son, en un gran número de pacientes, la causa de esas dificultades. Presentamos el caso de una paciente con subsíntomas interepisódicos, a la que instauramos un tratamiento con aripiprazol. Este neuroléptico, de singular mecanismo de acción, ha producido en nuestra paciente sorprendentes consecuencias clínicas de interesante discusión (AU)


Bipolar disorder is a chronic illness, characterized by remissions and exacerbations and whose course can be favorably modified by appropriate treatment. Although the treatment of acute episodes is important, the main objective of maintenance treatment is to prevent relapses. Approximately 60% of bipolar patients are estimated to experience chronic difficulties in their social and occupational lives. In a large percentage of patients, these difficulties are caused by the presence of subclinical symptoms between acute episodes. We report the case of a female patient with inter-episode subclinical symptoms who began treatment with aripiprazole. This neuroleptic, which has a singular mechanism of action, produced surprising results in our patient, which are worthy of discussion (AU)


Assuntos
Humanos , Antipsicóticos/uso terapêutico , Transtorno Bipolar/tratamento farmacológico
10.
Pharmacol Res ; 59(4): 269-72, 2009 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-19162188

RESUMO

It has been suggested that the family history of psychotic disorders is useful in defining homogeneous groups of bipolar patients. The plasma homovanillic acid (pHVA) concentrations have been related to the effect of antipsychotic treatment in psychotic patients. We have studied the influence of a positive family history of psychotic disorders both on the variation of pHVA levels and on the relation between pHVA concentrations and the clinical response to treatment. Clinical status and pHVA levels were assessed in 58 medication free patients before and after 4 weeks of treatment with olanzapine and lithium. Clinical improvement correlated positively with pHVA levels on the 28th day of treatment only in the patients having first degree relatives with psychotic disorders. The pHVA levels did not decrease after 28 days of treatment. Our results reinforce the idea that a positive family history of psychosis in psychotic bipolar disorders may constitute a good basis for sub-grouping these patients.


Assuntos
Transtorno Bipolar/sangue , Transtorno Bipolar/genética , Saúde da Família , Ácido Homovanílico/sangue , Transtornos Psicóticos/diagnóstico , Transtornos Psicóticos/genética , Adulto , Antimaníacos/uso terapêutico , Benzodiazepinas/administração & dosagem , Transtorno Bipolar/tratamento farmacológico , Quimioterapia Combinada , Feminino , Humanos , Compostos de Lítio/administração & dosagem , Masculino , Olanzapina , Inibidores Seletivos de Recaptação de Serotonina/uso terapêutico , Resultado do Tratamento
11.
Neuropsychobiology ; 58(3-4): 111-7, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-18997477

RESUMO

UNLABELLED: We examined the catechol-O-methyl transferase (COMT) Val108/158Met genotype in 160 type 1 bipolar patients. We also analyzed the plasma concentrations of homovanillic acid (HVA), 3-methoxy-4-hydroxyphenylethylenglycol (MHPG) and 3,4-dihydroxyphenylacetic acid in 60 of those patients who had been without mood stabilizers or neuroleptic treatment for at least 8 days. RESULTS: Patients with congruent psychotic symptoms presented a higher plasma concentration of HVA than mood incongruent psychotic patients. The Val/Val genotype was associated with higher plasma concentrations of HVA and MHPG. We detected a larger proportion of patients with psychotic symptoms in the Val/Val genotype group, although this did not reach statistical significance. It was found that the distribution of the COMT genotype was not influenced by the congruent/incongruent nature of the psychotic symptoms. LIMITATIONS: The proportion of patients without psychotic symptoms in our sample was low. This fact limits the value of some comparisons. CONCLUSIONS: Congruent and incongruent psychotic patients can be distinguished in terms of the concentration of plasma HVA. Based on the presence or absence of mood incongruent symptoms, the Val108/158Met polymorphism of the COMT gene alone does not appear to be a crucial determinant in the division of psychotic bipolar patients. Nevertheless, COMT polymorphisms may influence some of the characteristics of the patients by their effect on monoamine metabolism.


Assuntos
Ácido 3,4-Di-Hidroxifenilacético/sangue , Transtorno Bipolar/genética , Transtorno Bipolar/fisiopatologia , Catecol O-Metiltransferase/genética , Ácido Homovanílico/sangue , Metoxi-Hidroxifenilglicol/sangue , Adulto , Transtorno Bipolar/sangue , Feminino , Genótipo , Humanos , Masculino , Polimorfismo de Nucleotídeo Único , Fatores Socioeconômicos
12.
Eur. j. psychiatry ; 21(2): 124-133, abr.-jun. 2007. tab
Artigo em En | IBECS | ID: ibc-65126

RESUMO

No disponible


Background and objectives: Various studies have found significant correlations between feelings of shame and psychopathologies, as depression or eating disorders. Since some authors have shown an association between inhibition, neuroticism and shame, we hypothesize that Sensibility to Punishment (SP) would relate positively to shame. We also propose that patients diagnosed with depression should score higher in shame domain than the rest of the diagnostic groups. Finally we predict that psychotic patients, since they have poor self-consciousness, should score the lowest in shame proneness. Methods: The Spanish version of the TOSCA, the Sensitivity to Punishment and Reward Questionnaire (SPSRQ) and The Clinical Global Impressions (CGI) were applied to a sample of 172 individuals, from which 93 were university students and 79 were patients receiving psychiatric treatment. Results: In the Sensitivity to Punishment domain we found statistically significant mean differences between patients with Major Depression and the comparative group. We have found a positive correlation between Sensitivity to Punishment and Shame in the general population and also for the Major depressive subgroup. The relation between depression and shame proneness was statistically significant. Shame and Guilt correlated in the TOSCA and the Major Depressive patients scores higher on both domains. Bipolar and schizophrenics patients showed lower scores in Shame than depressives. Conclusions: Among other conclusions we recommend that future studies in the field should use dimensional diagnoses besides the categorical ones (AU)


Assuntos
Humanos , Transtornos Mentais/psicologia , Vergonha , Punição , Culpa , Estudos de Casos e Controles , Transtorno Depressivo/psicologia , Escalas de Graduação Psiquiátrica
13.
Prog Neuropsychopharmacol Biol Psychiatry ; 31(3): 713-9, 2007 Apr 13.
Artigo em Inglês | MEDLINE | ID: mdl-17291661

RESUMO

BACKGROUND: Changes in the levels of homovanillic acid in blood plasma (pHVA) may reflect changes which occur in the brain. In healthy individuals, this concentration of pHVA is stable over time. METHODS: Over the course of one month, we studied 98 acute schizophrenic patients who had not been taking any medication but were administered neuroleptics upon hospital admission, together with 23 chronic schizophrenic patients on long-term treatment from whom medication was withdrawn. Blood samples were taken at regular intervals from each individual and the concentration of plasma homovanillic acid was measured. RESULTS: We found relative stable values of pHVA with an intraclass correlation coefficient of 0.363 in acute patients and 0.638 (p<0.0001) in chronic patients, although no differences were found in mean values (13.79 and 14.18 microg/L, respectively) or in the variation range (7.20 to 26.7 microg/L and 6.96 to 29.96 microg/L respectively). The index of individuality was calculated to be 1.36 in acute patients and 0.74 in chronic patients. CONCLUSIONS: Despite the wide range of values in the concentration of pHVA and the presence of pharmacological stimuli, we found a certain reproducibility in the levels of this dopamine metabolite. These findings are consistent with the idea that the dopaminergic activity is characterized by a constitutive value which would be under genetic control. The higher stability observed in chronic patients may reflect a weaker, age-related dopaminergic plasticity; conversely, it may indicate that a lack of plasticity in response to a pharmacological stimulus may be an indicator of poorer prognosis.


Assuntos
Ácido Homovanílico/sangue , Esquizofrenia/sangue , Adulto , Análise de Variância , Antipsicóticos/farmacologia , Antipsicóticos/uso terapêutico , Feminino , Humanos , Individualidade , Masculino , Esquizofrenia/classificação , Esquizofrenia/tratamento farmacológico , Fatores de Tempo
14.
Soc Psychiatry Psychiatr Epidemiol ; 42(1): 14-23, 2007 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-17036263

RESUMO

BACKGROUND: There is a scarcity of data regarding the actual stigma and discrimination experienced by schizophrenic patients and their relatives. Those experiences can vary significantly depending on the specific social group involved. We have explored such phenomena in our culture with a qualitative technique. METHODS: We developed a qualitative study with focus groups of clinically stable schizophrenic outpatients (N = 18) and relatives (N = 26). Three groups were performed in each sample. RESULTS: Six categories of stigma and discrimination experiences were extracted from the patients' data: Mental illness vs. Lack of will, Prejudice related to dangerousness, Over-protection-infantilization, Daily social discrimination, Discrimination in health care, Descendants, Avoidance-social isolation. Data from relatives were divided into three sets: discrimination towards the patients witnessed by relatives, discrimination suffered by the relatives themselves and discrimination exerted by the relatives on the patients. CONCLUSIONS: Patients and relatives describe a great variety of stigma and discrimination experiences in all areas of life, including health care. Isolation and avoidance are common reactions to those experiences. Publicizing these stigma and discrimination experiences could help to reduce stigmatizing attitudes in society and result in healthier reactions from patients, favoring a better course of the illness.


Assuntos
Família/psicologia , Grupos Focais/métodos , Preconceito , Esquizofrenia , Psicologia do Esquizofrênico , Estereotipagem , Adulto , Atitude Frente a Saúde , Emprego , Feminino , Amigos/psicologia , Culpa , Acessibilidade aos Serviços de Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Isolamento Social/psicologia
15.
Eur. j. psychiatry (Ed. esp.) ; 18(4): 225-234, oct.-dic. 2004. tab
Artigo em Es | IBECS | ID: ibc-044601

RESUMO

Puesto que la representación social de la enfermedad mental y su tratamiento juegan un papel importante en su detección y en la orientación de los pacientes hacia distintas terapias, es importante determinar si la sociedad diferencia entre los distintos trastornos mentales y sus tratamientos. Estas representaciones se examinan en una encuesta realizada en una muestra estratificada de la población suiza para tres enfermedades mentales, en términos de definición como enfermedad, etiología, tratamientos previstos y pronóstico. Existe una diferenciación clara entre esquizofrenia por un lado, y depresión y trastorno de pánico por otro. La esquizofrenia se considera con más frecuencia una enfermedad real con etiología multifactorial, un pronóstico más pesimista y para la que la psicoterapia y la terapia familiar son tratamientos recomendados. Hay, sin embargo falta de diferenciación en cuanto a los distintos factores etiológicos, en particular los factores psicosociales, que se consideran muy importantes, y ciertos tratamientos, especialmente la medicación, recomendada sólo por un cuarto de la población


Assuntos
Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Idoso , Humanos , Transtornos Mentais/diagnóstico , Transtornos Mentais/psicologia , Religião , Problemas Sociais/psicologia , Valores Sociais , Psicotrópicos/uso terapêutico , Carência Psicossocial , Apoio Social , Análise de Variância , Conhecimentos, Atitudes e Prática em Saúde , Indicadores Sociais , Esquizofrenia/diagnóstico , Esquizofrenia/terapia , Manual Diagnóstico e Estatístico de Transtornos Mentais , Impacto Psicossocial
16.
Rev. Asoc. Esp. Neuropsiquiatr ; 24(91): 23-36, jul. 2004.
Artigo em Es | IBECS | ID: ibc-36740

RESUMO

La ansiedad social , la timidez y la inhibición conductual tienen bases genéticas aún no bien aclaradas. La desinhibición se puede producir por trastornos cerebrales orgánicos, psicosis funcionales, consumo de substancias psicoactivas y situaciones estresantes que bloquean las formación es reactivas de vergüenza y timidez. El autor cree que la idea de un continuum desde la desinhibición social de la manía hasta las formas más graves de la ansiedad social, la personalidad evitativa, es prematura para la investigación etiológica. Como alternativa propone que se consideren varios espectros que se solapen en esta área basadas en la fenomenología, la psicología cognitiva y la biología (AU)


Social phobia, shyness and behavioral inhibition have genetic bases yet to be clarified. Desinhibition can be found in organic brain disorders, functional psychoses, substance abuse, and in the course of stressful situations blocking reaction formations of shame and shyness. The author believes that the hypothesis of a continuum ranging from social disinhibition seen in manic episodes to avoidant personality is still premature for etiological research purposes. He proposes that further efforts should be made in conceptualizing this area of psychopathology with insights coming from phenomenology, cognitive psychology and biology (AU)


Assuntos
Psicopatologia/métodos , Ansiedade/complicações , Transtornos Psicóticos/complicações , Psicotrópicos/administração & dosagem , Ciência Cognitiva/métodos , Inibição Psicológica , Timidez , Psicometria/métodos , Transtornos Relacionados ao Uso de Substâncias/diagnóstico , Transtornos Cognitivos/complicações , Vergonha , Transtornos Fóbicos/complicações , Culpa , Psicanálise/métodos
17.
Neuropsychopharmacology ; 29(3): 580-8, 2004 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-14628003

RESUMO

Major depression is associated with the upregulation of alpha(2A)-adrenoceptors in brain tissue and blood platelets. The homologous regulation of these receptors by G-protein-coupled receptor kinases (GRKs) might play a relevant role in the pathogenesis and treatment of depression. This study was designed to assess the status of the complex alpha(2A)-adrenoceptor/Galphai/GRK 2 in the platelets of depressed patients (n=22) before and after treatment with the antidepressant mirtazapine, an antagonist at alpha(2A)-adrenoceptors (30-45 mg/day for up to 6 months). A second series of depressed suicide attempters (n=32) were also investigated to further assess the status of platelet GRK 2 and GRK 6. Platelet alpha(2A)-adrenoceptors and Galphai protein immunoreactivities were increased in depressed patients (49 and 35%) compared with matched controls. In contrast, GRK 2 content was decreased in the two series of depressed patients (27 and 28%). GRK 6 (a GRK with different properties) was found unchanged. In drug-free depressed patients, the severity of depression (behavioral ratings with two different instruments) correlated inversely with the content of platelet GRK 2 (r=-0.46, n=22, p=0.032, and r=-0.55, n=22, p=0.009). After 4-24 weeks of treatment, mirtazapine induced downregulation of platelet alpha(2A)-adrenoceptors (up to 34%) and Galphai proteins (up to 28%), and the upregulation of GRK 2 (up to 30%). The results indicate that major depression is associated with reduced platelet GRK 2, suggesting that a defect of this kinase may contribute to the observed upregulation of alpha(2A)-adrenoceptors. Moreover, treatment with mirtazapine reversed this abnormality and induced downregulation of alpha(2A)-adrenoceptor/Galphai complex. The results support a role of supersensitive alpha(2A)-adrenoceptors in the pathogenesis and treatment of major depression.


Assuntos
Proteínas Quinases Dependentes de AMP Cíclico/sangue , Transtorno Depressivo Maior/sangue , Transtorno Depressivo Maior/tratamento farmacológico , Subunidades alfa Gi-Go de Proteínas de Ligação ao GTP/sangue , Mianserina/análogos & derivados , Mianserina/uso terapêutico , Receptor A2A de Adenosina/sangue , Adulto , Análise de Variância , Plaquetas/efeitos dos fármacos , Plaquetas/metabolismo , Distribuição de Qui-Quadrado , Transtorno Depressivo Maior/psicologia , Feminino , Humanos , Masculino , Mianserina/farmacologia , Pessoa de Meia-Idade , Mirtazapina , Tentativa de Suicídio/estatística & dados numéricos , Quinases de Receptores Adrenérgicos beta
18.
Brain Res Mol Brain Res ; 111(1-2): 31-41, 2003 Mar 17.
Artigo em Inglês | MEDLINE | ID: mdl-12654503

RESUMO

G protein-coupled receptor kinases (GRKs) and beta-arrestin-2 play a crucial role in the regulation of neurotransmitter receptors in brain. In this study, GRK 2, GRK 6, beta-arrestin-2 and associated proteins (Gbeta proteins and protein phosphatase (PP)-2A) were quantitated in parallel (immunodensity with specific antibodies) in brains of depressed subjects (drug-free and antidepressant-treated) to investigate the effect of major depression and antidepressant drugs on these receptor regulatory proteins. Specimens of the prefrontal cortex (Brodmann's area 9) were collected from 19 suicide and non-suicide depressed subjects and 13 control subjects. In drug-free (n=9), but not in antidepressant-treated (n=10), depressed subjects an increase in the density of membrane-associated GRK 2 (30%, n=9, P=0.005) was found compared with that in sex-, age-, and PMD-matched controls. Comparison between drug-free and antidepressant-treated depressed subjects showed that GRK 2 was reduced in membrane (39%, n=10, P=0.008) and cytosolic (44%, n=10, P=0.09) preparations after antidepressant drug treatment. In contrast, membrane-associated GRK 6 (drug-free and antidepressant-treated depressed subjects) was found unchanged when compared with that in matched controls. Similarly, the densities of beta-arrestin-2, PP-2A, and Gbeta proteins were not significantly different from those in matched controls. There was a positive correlation between the immunodensities of GRK 2 and beta-arrestin-2 in membrane preparations (r=0.48, n=19, P=0.04), suggesting that both proteins are regulated in a coordinated manner in brains of depressed subjects. The results of this study indicate that major depression is associated with upregulation of brain GRK 2, but not GRK 6, and that antidepressant drug treatment appears to induce downregulation of GRK 2 protein.


Assuntos
Antidepressivos/farmacologia , Arrestinas/efeitos dos fármacos , Proteínas Quinases Dependentes de AMP Cíclico/efeitos dos fármacos , Transtorno Depressivo Maior/tratamento farmacológico , Transtorno Depressivo Maior/metabolismo , Córtex Pré-Frontal/efeitos dos fármacos , Proteínas Serina-Treonina Quinases/efeitos dos fármacos , Adulto , Idoso , Antidepressivos/uso terapêutico , Arrestinas/metabolismo , Membrana Celular/efeitos dos fármacos , Membrana Celular/metabolismo , Proteínas Quinases Dependentes de AMP Cíclico/metabolismo , Transtorno Depressivo Maior/fisiopatologia , Regulação para Baixo/efeitos dos fármacos , Regulação para Baixo/fisiologia , Feminino , Quinases de Receptores Acoplados a Proteína G , Proteínas Heterotriméricas de Ligação ao GTP/efeitos dos fármacos , Proteínas Heterotriméricas de Ligação ao GTP/metabolismo , Humanos , Imuno-Histoquímica , Masculino , Pessoa de Meia-Idade , Fosfoproteínas Fosfatases/efeitos dos fármacos , Fosfoproteínas Fosfatases/metabolismo , Córtex Pré-Frontal/metabolismo , Córtex Pré-Frontal/fisiopatologia , Proteínas Serina-Treonina Quinases/metabolismo , Receptores de Neurotransmissores/efeitos dos fármacos , Receptores de Neurotransmissores/metabolismo , Regulação para Cima/efeitos dos fármacos , Regulação para Cima/fisiologia , Quinases de Receptores Adrenérgicos beta , beta-Arrestina 2 , beta-Arrestinas
19.
Neuropsychopharmacology ; 28(5): 947-55, 2003 May.
Artigo em Inglês | MEDLINE | ID: mdl-12637947

RESUMO

Neuronal cyclin-dependent kinase-5 (Cdk5) and its neuron-specific activator p35 play a major role in regulating the cytoskeleton dynamics. Since opioid addiction was associated with hyperphosphorylation of neurofilament (NF) in postmortem human brains, this study was undertaken to assess the status of the cdk5/p35 complex and its relation with NF-H phosphorylation in brains of chronic opioid abusers. Decreased immunodensities of cdk5 (18%) and p35 (26-44%) were found in the prefrontal cortex of opioid addicts compared with matched controls. In the same brains, the densities of p25 (a truncated neurotoxic form of p35), phosphatase PP2Ac and mu-calpain were found unaltered. Acute treatment of rats with morphine (30 mg/kg, 2 h) increased the density of cdk5 (35%), but not that of p35, in the cerebral cortex. In contrast, chronic morphine (10-100 mg/kg for 5 days) induced marked decreases in cdk5 (40%) and p35 (47%) in rat brain. In brains of opioid addicts, the density of phosphorylated NF-H was increased (43%) as well as the ratio of phosphorylated to nonphosphorylated NF-H forms (two-fold). In these brains, phosphorylated NF-H significantly correlated with p35 (r=0.58) but not with cdk5 (r=0.03). The results suggest that opiate addiction is associated with downregulation of cdk5/p35 levels in the brain. This downregulation and the aberrant hyperphosphorylation of NF-H proteins might have important consequences in the development of neural plasticity associated with opiate addiction in humans.


Assuntos
Regulação para Baixo/fisiologia , Morfina/farmacologia , Proteínas do Tecido Nervoso/metabolismo , Proteínas de Neurofilamentos/metabolismo , Transtornos Relacionados ao Uso de Opioides/metabolismo , Adolescente , Adulto , Animais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fosforilação/efeitos dos fármacos , Córtex Pré-Frontal/efeitos dos fármacos , Córtex Pré-Frontal/metabolismo , Ratos , Ratos Sprague-Dawley , Estatísticas não Paramétricas
20.
Eur. j. psychiatry (Ed. esp.) ; 16(4): 228-235, oct. 2002.
Artigo em Es | IBECS | ID: ibc-17918

RESUMO

La Oficina Regional para Europa de la Organización Mundial de la Salud (OMS) en Copenague estableció un grupo de trabajo sobre evaluación en Salud Mental formado por expertos en Psiquiatría, los cuales, junto con los centros colaboradores de la OMS, prestan asistencia a una red Europea de Salud Mental constituido por 47 representantes nacionales para la Salud Mental nombrados por los diferentes ministerios. Este artículo discute las evaluaciones que se han hecho en siete estados de la Europa del Este y del Sureste durante los tres años de vida del grupo de trabajo. La mayoría de los instrumentos de evaluación que se utilizan en la actualidad exigen estudios de campo largos y costosos, que rara vez son posibles en el contexto de este tipo de evaluación. En el futuro se deberá hacer un esfuerzo considerable para consensuar procedimientos simples y fiables para evaluar estos parámetros y controlar la evolución. Por lo general, las evaluaciones descritas aumentaron el interés y la sensibilidad por las cuestiones de Salud mental, colocando de esta manera estas cuestiones en el centro de la política en la mayoría de los países concernidos (AU)


Assuntos
Humanos , Organização Mundial da Saúde , Serviços de Saúde Mental/normas , Padrões de Prática Médica , Europa (Continente) , Cooperação Técnica , Cooperação Internacional , Promoção da Saúde , Avaliação de Processos e Resultados em Cuidados de Saúde
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