RESUMEN
The Delusional Misidentification Syndromes (DMSs) are characterized by defective integration of the normally The Delusional Misidentification Syndromes (DMSs) are characterized by defective integration of the normally fused functions of perception and recognition. The classical sub-types are: the syndromes of Capgras, Fregoli,Intermetamorphosis (mentioned in 3) and Subjective doubles. These syndromes occur in a clear sensorium and shouldbe differentiated from the banal transient misidentifications occurring in confusional states and in mania and from thenon-delusional misidentifications (e.g. prosopagnosia). Joseph Capgras, who described the best-known sub-type, was indecisive on its pathogenesis. In his original report he defined the syndrome as "agnosia of identification" produced by a conflict between affective accompaniments ofsensory and mnemonic images. In his subsequent two publications, he considered the syndrome as a restitution delusionand as a psychopathological mechanism to hide incestuous desires. For more details see the chapter by J.P. Luaute in avolume on DMS. Psychodynamic approaches are, essentially, variants of the formulation that DMSs result from ambivalent feelings resolvedby directing hate feelings onto an imagined double in order to retain the original intact (and thus avoid guilt).These views have been voiced by David Enoch [relevant chapter in (3)] and with variations by many other investigatorsreviewed by Oyebode. Regression to archaic modes of thought (like thinking in terms of doubles and dualisms) due to personality disintegrationproduced by psychotic illness is a fascinating hypothesis by John Todd [mentioned in (1)]. However, if this was thecase, DMS should be much more frequent. Mayer-Gross and Ackner (mentioned in 9) had observed that when there is a delusional development, depersonalization-derealization experiences tend to be included within the delusional system. Such experiences usually precede orcoincide with the onset of DMS. In view of this, Christodoulou suggested that DMSs may represent delusional evolutions of depersonalization-derealization experiences. Similar mechanisms were proposed for false memories of familiarity,reduplicative paramnesia and autoscopy. Cerebral "dysrhythmia" has also been noted in patients with DMS. In view of clinical and prognostic similarities of DMSpatients with patients suffering from psychotic states occurring in an epileptic setting, many of these patients have beenconsidered as suffering from broadly speaking "epileptic" psychoses. Joseph [mentioned in (6)] suggested that organiccauses produce disconnection between right and left cortical areas that decode afferent sensory information. This resultsin the creation of a separate image in each hemisphere leading to an awareness of two, physically identical images. Ellis and Young [mentioned in (1) and (6)] have maintained that DMS may result from defects at different stages of aninformation processing chain. More specifically, the Capgras Syndrome appears when the route for unconscious recognitionis damaged. Similar mechanisms have been proposed for the rest of the subtypes. Margariti and Kontaxakis8 have considered that in DMS there is disruption of the ability to recognize identities ratherthan superficial appearance. Others have maintained that DMSs are multimodal neuropathologies and cannot be linkedto a single cognitive defect. Lastly, in view of the marked organic abnormalities detected in all DMS subtypes, DMSs have been linked with a greatnumber of organic conditions [reviewed in detail by Oyebode (5)]. According to Greek mythology, Procrustes was a bandit who stretched or amputated the limbs of his guests to fit hisiron bed. The DMSs do not deserve such treatment. Submitting them to the procrustean bed of uniformity should be avoided. People develop DMS for a variety of reasons. Most subjects have right hemisphere dysfunction but not exclusively.Their condition is associated not with one but with diverse phenomena (depersonalization - derealization, prosopagnosia,false memories of familiarity, autoscopy, reduplicative paramnesia etc.) similarities with psychotic phenomena associatedwith epilepsy have been suggested but this refers to some patients only. Additionally, the charged emotionalrelationship of the patient with the misidentified person(s) is neither necessary nor sufficient. Diagnostically speaking, many roads lead to DMS, ranging from the monosymptomatic and monothematic one (consideredas par excellence DMS) to that associated with disorders mainly of the schizophrenic or organic spectrum. DMScan also be reached by a more "superficial" road, the one of depression, in which the delusion is secondary and often dependenton the self-depreciation ideation. Speculating on these syndromes is a fascinating journey in psychopathologybut, although in most cases an organic contributor is present, yet the great diversity of conditions in the setting of whichDMSs occur renders the possibility of a unifying hypothesis unlikely.
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Deluciones/psicología , Esquizofrenia Paranoide/psicología , Trastornos del Conocimiento/psicología , Trastornos del Conocimiento/terapia , Deluciones/terapia , Humanos , Pruebas Neuropsicológicas , Psicoterapia Psicodinámica , Esquizofrenia Paranoide/terapiaRESUMEN
This article defines the scope of Person-Centered Medicine, traces its roots in ancient conceptions, explains the reasons for the revival of this perspective in our times, and highlights the contribution of the International College of Person-Centered Medicine (ICPCM) in the promotion of the personcentered perspective in health and disease. The value of communication is underlined with reference to both diagnosis and treatment. The concept of Health is considered historically and the inclusiveness, holistic vista and positive health orientation of the WHO definition of Health (1948) is underlined. It is emphasized that Mental Health Promotion is differentiated conceptually from Disease Prevention in that promotion deals with health and prevention deals with illness, the relationship of Health Promotion with Salutogenesis (Antonovsky 1996) is noted and it is pointed out that among the targets of health promotion, preservation of peace is also included (WHO, 2004). In line with this, the ICPCM has supported and co-signed the Athens Anti-War Declaration (2016). Evaluating the impact of Health Promotion efforts is a necessary but difficult task as it requires targeted research and there are many inherent confounding factors. The social or environmental contexts of health behaviors should be taken into account as well as the subjective indicators of health. In an attempt to resolve the difficulties arising from this issue, the ICPCM has developed a prototype "Person-centered Care Index" (Kirisci et al 2016). With reference to Education it is pointed out that it is necessary for the educators to speak with the students rather than speak to them. Concerning research, the ICPCM in its 2013 Geneva Declaration has identified the main research areas in the person-centered field. The importance of assuring healthy lives and well-being for ALL is underlined and the difficulties associated with the achievement of this goal are noted. Lastly, the need to apply the principles of Person-centered Medicine to victims of natural, human-made and economic disasters (Christodoulou et al 2016) is underlined, especially in view of the frequent occurrence of these disasters in our times. In conclusion, the contribution of the ICPCM during the ten years of its existence, with reference to the sensitization of health professionals in the Person-centered approach is noted. This contribution has been carried out in line with the principles of the ICPCM and with its Geneva Declarations.
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Promoción de la Salud/organización & administración , Programas Gente Sana/organización & administración , Atención Dirigida al Paciente , Facultades de Medicina , Grecia , HumanosRESUMEN
This is a comparative study aiming to investigate quality of life (QoL) and depression in individuals diagnosed either with human immunodeficiency virus/acquired immune deficiency syndrome (HIV/AIDS), or genital warts (GW) and genital herpes (GH), in two healthcare settings, in the United Kingdom (UK) or in Greece (Gr). Using a matched-pairs design, two equalized patient samples with sexually transmitted infections (STI) were recruited: from UK (n=43) and from Greece (n=43). QoL was assessed with WHOQOL-HIV BREF for HIV patients and WHOQOL-STI BREF -a newly adapted instrument- for genital warts and genital herpes patients. Depressive symptomatology was measured by the Centre for Epidemiological Studies- Depression Scale (CES-D) along with sociodemographic data. Results indicate that in both country- healthcare settings, a high percentage of individuals diagnosed with any type of STI, reported considerable depressive symptomatology: 35.7% for UK and 41.5% for Greek participants respectively. Regarding QoL, participants in the Greek healthcare settings reported significantly lower scores in the environment domain, and even lower scores were reported by the GW/GH group, in comparison to HIV. Specifically, these groups indicated significantly lower values in the following WHOQOL-BREF environment facets: (i) physical safety and security, (ii) participation in and opportunities for recreation/leisure activities, (iii) home environment, (iv) accessibility and quality in health and social care, and (v) transport facilities. Regarding correlation of QoL and depression, regression analysis provided significant evidence for depression having a differential effect on WHOQOL-BREF QoL domains. Evidence of increased depressive symptomatology in both STI patient- cohorts may shed light into unmet healthcare needs that should be addressed by healthcare providers in UK and Greece respectively. Furthermore, all types of Greek STI participants reported lower QoL, particularly the GW/GH group, indicating important unmet QoL needs in the environment domain, such as health and social care accessibility and quality, or environmental and social resources, all lowering everyday QoL. The present findings may provide guidelines for tailored mental health interventions alleviating depressive symptomatology in STI patients. Provision of targeted-interventions at healthcare and social-environmental levels will contribute to QoL/ health improvement in STI patients.
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Depresión/psicología , Pruebas Neuropsicológicas , Calidad de Vida , Enfermedades de Transmisión Sexual/psicología , Adulto , Enfermedad Crónica , Depresión/etiología , Femenino , Grecia , Infecciones por VIH , Humanos , Masculino , Persona de Mediana Edad , Enfermedades de Transmisión Sexual/complicaciones , Encuestas y Cuestionarios , Reino UnidoAsunto(s)
Recesión Económica , Salud Mental/economía , Salud Mental/estadística & datos numéricos , Depresión/epidemiología , Grecia/epidemiología , Necesidades y Demandas de Servicios de Salud , Humanos , Trastornos Mentales/economía , Trastornos Mentales/epidemiología , Pobreza , Apoyo Social , Desempleo/psicología , Desempleo/estadística & datos numéricosRESUMEN
BACKGROUND: Although maternity blues have been studied in many countries worldwide the factors that influence the occurrence of this clinical entity are not well understood. The purpose of this study was to investigate the prevalence, time course and symptomatology of maternity blues in a Greek urban environment as well as the relation of maternity blues with certain clinical and sociodemographic factors. METHOD: A study of a sample of 402 women that were recruited during the first day after delivery. Each woman completed the Kennerley's Blues Questionnaire on a daily basis for the first 3 days of puerpartum. Clinical and sociodemographic data were obtained through questionnaires and personal interview. RESULTS: 179 (44.5%) women experienced severe maternity blues during the first 3 days after delivery. Delivery by caesarian section (P=0.006), stressful events during pregnancy (P=0.02), depressive feelings the last month prior to delivery (P=0.002), anxiety on the day of delivery (P=0.001) and hypochondriasis (P=0.001) were the factors that were found to relate significantly to maternity blues. CONCLUSION: The women's emotional condition prior and after delivery, delivery via caesarotomy, as well as fears concerning somatic health had strong impact on the occurrence of maternity blues.
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Depresión Posparto/epidemiología , Población Urbana/estadística & datos numéricos , Adulto , Ansiedad/diagnóstico , Ansiedad/epidemiología , Ansiedad/psicología , Cesárea/psicología , Comparación Transcultural , Estudios Transversales , Depresión/diagnóstico , Depresión/epidemiología , Depresión/psicología , Depresión Posparto/diagnóstico , Depresión Posparto/psicología , Femenino , Grecia , Humanos , Hipocondriasis/diagnóstico , Hipocondriasis/epidemiología , Hipocondriasis/psicología , Incidencia , Acontecimientos que Cambian la Vida , Determinación de la Personalidad , Inventario de Personalidad , Embarazo , Embarazo no Deseado/psicología , Factores de Riesgo , Factores Socioeconómicos , Estadística como AsuntoRESUMEN
OBJECTIVE: To report a case of a patient with Behcet's syndrome who developed treatment resistant bipolar disorder (BD) several years after the onset of Behcet's syndrome. METHODS: A 62-year-old woman suffering from Behcet's syndrome since the age of 38, who developed a typical BD 6 years after the first manifestations of the syndrome was described. RESULTS: Once BD occurred, Behcet's syndrome became milder, while BD deteriorated and evolved into a rapid cycling illness. Lithium and carbamazepine were ineffective in controlling the affective symptoms, while sodium valproate combined with low doses of carbamazepine and olanzapine resulted in sufficient stabilization of her mood state. CONCLUSIONS: Behcet's syndrome may have been the organic substrate for BD in this case. The appearance of BD in the setting of an organic-immune disorder, like Behcet's syndrome, suggests that such disorders may be the neurobiologic substrate or contributor for BD, at least in certain cases.
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Anticonvulsivantes/uso terapéutico , Antipsicóticos/uso terapéutico , Síndrome de Behçet/complicaciones , Trastorno Bipolar/complicaciones , Trastorno Bipolar/tratamiento farmacológico , Resistencia a Medicamentos , Trastorno Bipolar/diagnóstico , Manual Diagnóstico y Estadístico de los Trastornos Mentales , Femenino , Humanos , Persona de Mediana Edad , PrevalenciaRESUMEN
We previously reported an association between the functional polymorphism in the upstream regulatory region of the serotonin transporter gene (SERTPR) and the prophylactic efficacy of lithium in a sample of 201 Italian subjects affected by Mood disorders. The aim of the present study was to replicate analyses on an independent sample. In total, 83 subjects affected by Bipolar disorder were recruited in the Mood Disorders Clinic of the Eginition Hospital of the Athens University, Medical School Department of Psychiatry. All patients were administered with lithium as prophylactic therapy and they were prospectively observed for at least 3 years. Subjects were typed for their SERTPR variant using polymerase chain reaction techniques. SERTPR variants were associated with lithium outcome among those subjects who had few manic episodes before lithium treatment and, as a trend, among subjects who received a high daily dose of lithium (> or =1200 mg/die). In both cases, subjects with the l/l variant showed a higher probability to develop an illness episode within 3 years of prophylactic treatment with lithium. The present study confirmed our previous observation of a better response of SERTPR*l/s carriers, but could not confirm a poor efficacy in subjects with the SERTPR*s/s genotype. Notwithstanding the conflicting results, SERTPR variants are a possible liability factor for lithium long-term efficacy in mood disorders. Further studies on independent and large samples are required to determine the reliability and direction of the possible association between SERTPR variants and lithium outcome.
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Antidepresivos/uso terapéutico , Trastorno Bipolar/prevención & control , Litio/uso terapéutico , Glicoproteínas de Membrana/genética , Proteínas de Transporte de Membrana/genética , Trastornos del Humor/prevención & control , Proteínas del Tejido Nervioso/genética , Edad de Inicio , Trastorno Bipolar/genética , Femenino , Genotipo , Humanos , Masculino , Persona de Mediana Edad , Trastornos del Humor/genética , Reacción en Cadena de la Polimerasa/métodos , Trastornos Psicóticos/genética , Proteínas de Transporte de Serotonina en la Membrana Plasmática , Enfermedades de la Tiroides/complicacionesRESUMEN
AIMS: This study sought to clarify if Alexander the Great indulged pathologically in alcohol and whether it contributed to his death. DESIGN: The texts of the historians Diodorus of Sicily, Plutarch, Arrian, Curtius Rufus, Athenaeus, Aelian and Justin were studied, with their information concerning wine consumption by Macedonians, and especially Alexander, and were evaluated. The surviving historical texts, all later than Alexander's epoch, are based on a series of contemporary histories and especially on the 'Royal Journals', an official diary written in the imperial court. FINDINGS AND CONCLUSIONS: Alexander consumed large quantities of undiluted wine periodically, reaching pathological intoxication. However, the existing data do not provide convincing evidence that Alexander the Great manifested abuse of or dependence on alcohol according to DSM-IV or ICD-10 criteria and it seems unlikely that alcohol was involved in his untimely death.
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Alcoholismo/historia , Personajes , Intoxicación Alcohólica/historia , Antigua Grecia , Historia Antigua , Humanos , MasculinoRESUMEN
Zolpidem is a short-acting imidazopyridine hypnotic that is an agonist at the gamma-aminobutyric acid A type (GABAA) receptor. It has been suggested that it acts selectively on alpha1 subunit-containing GABAA benzodiazepine (BZ1) receptors presenting (contrary to classic benzodiazepines) low or no affinity for other subtypes. Therefore, it has been proposed that it lacks the benzodiazepines-like side-effects, having minimal abuse and dependence potential. Nevertheless, there is a considerable number of zolpidem dependence case reports in the literature. We present eight cases of zolpidem abuse and dependence without criminal record, without history of substance abuse (except for one alcohol abuser), with minor psychiatric disorders, who took zolpidem after physicians prescription in order to deal with their insomnia. However, they became zolpidem abusers not craving its sedative, but its anxiolytic and stimulating action, which helped them to cope with everyday activities. It is possible that, in the high doses that our patients used, zolpidem abandons its selectivity for BZ1 receptors and demonstrates all the actions of classic benzodiazepines. Molecular biology, via possible mutations on GABA receptors, may provide some answers as to why our eight patients (who did not differ much from the thousands of insomniacs who use zolpidem) and other zolpidem abusers, raised the dose progressively, and sought something from the drug other than hypnotic action.
Asunto(s)
Agonistas del GABA/efectos adversos , Hipnóticos y Sedantes/efectos adversos , Piridinas/efectos adversos , Trastornos Relacionados con Sustancias/etiología , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Agonistas del GABA/uso terapéutico , Humanos , Hipnóticos y Sedantes/uso terapéutico , Masculino , Persona de Mediana Edad , Piridinas/uso terapéutico , Receptores de GABA-A/efectos de los fármacos , Trastornos del Inicio y del Mantenimiento del Sueño/tratamiento farmacológico , Trastornos Relacionados con Sustancias/psicología , ZolpidemRESUMEN
BACKGROUND: Transsexualism is thought to be related to cortical processes reflecting a complex mosaic of biological, psychological and social/cultural information. Since the P300 component of event-related potentials is considered as an index of attentional processes, the present study focuses on auditory P300 elicited during a short memory test in male to female (MF) transsexuals, compared with that in healthy controls. METHOD: The P300 component was evaluated during the anticipatory period of a short memory test in 13 MF transsexuals who had a gender reassignment operation, at least 3 years previously (mean time 17-6 years, range 3-31 years) and 26 healthy subjects (11 males and 15 females) matched for age and educational level. RESULTS: MF transsexuals exhibited significant reduction of P300 amplitude in the left frontal and temporoparietal areas in comparison to the control group. Furthermore, the group of transsexuals showed a significant delay of P300 latency in comparison to the controls, at the central frontal region. CONCLUSIONS: These findings point to significant psychophysiological alterations of distributed cortical circuits in MF transsexuals. These alterations may be critically related to the biological substrate of MF transsexualism.
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Atención/fisiología , Potenciales Relacionados con Evento P300/fisiología , Transexualidad/psicología , Femenino , Humanos , Masculino , Memoria a Corto Plazo , Persona de Mediana Edad , Psicofisiología , Tiempo de ReacciónAsunto(s)
Encéfalo/anatomía & histología , Síndrome de Capgras/complicaciones , Trastornos del Conocimiento/complicaciones , Despersonalización/complicaciones , Pirenzepina/análogos & derivados , Autoimagen , Padres Solteros , Adulto , Benzodiazepinas , Síndrome de Capgras/diagnóstico , Síndrome de Capgras/tratamiento farmacológico , Trastornos del Conocimiento/diagnóstico , Despersonalización/diagnóstico , Despersonalización/tratamiento farmacológico , Femenino , Humanos , Imagen por Resonancia Magnética , Olanzapina , Pirenzepina/uso terapéutico , Inhibidores Selectivos de la Recaptación de Serotonina/uso terapéutico , Índice de Severidad de la Enfermedad , Síndrome , Escalas de WechslerRESUMEN
E-mental health refers to the use of telecommunication and information technology in mental health services. In Greece, ordinary telephone communications have been used to provide mental health services, such as a psychiatric crisis intervention line (METB). E-psychiatry is a relatively new approach to delivering psychiatric services through the Internet. We have developed an e-psychiatry Website, Glaucopis-net. The main objective is to provide information on a broad range of psychiatric conditions, such as dementia, depression and anxiety. Email mental health services will be offered as an alternative way of accessing help. Confidentiality issues concerning patient records and personal data will be treated in accordance with Greek legislation. Glaucopis-net will integrate new telecommunication and information services with classical mental health services.
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Internet , Servicios de Salud Mental/organización & administración , Telemedicina/métodos , Grecia , Humanos , Trastornos Mentales/terapiaRESUMEN
Atypical neuroleptics share a common feature, showing higher affinity for 5-HT2 receptors than for D2 dopamine receptors, but show considerable differences in their clinical and pharmacological properties. In clinical doses, they occupy serotonergic receptors near saturation, but show considerable differences regarding the D2 receptor occupancies, with clozapine showing the lowest degree of occupation. We assessed serotonergic and dopaminergic receptor responsiveness in two groups of male schizophrenic patients, one treated with the atypical neuroleptic clozapine (14 patients, doses 200-600 mg/d) and the other treated with olanzapine (11 patients, doses 10-30 mg/d). We measured the prolactin responses to the acute administration of a serotonergic drug, clomipramine, and a dopaminergic one, haloperidol. Tests were first performed in the drug-free state, and were repeated after the patients had been treated with stable doses of either drug for six weeks. Clomipramine administration induced significant increases of prolactin in the drug-free state. These responses were eliminated after treatment of the patients with either drug, thereby indicating a high 5-HT receptor occupancy by both clozapine and olanzapine. The prolactin responses to haloperidol were not altered after treatment with clozapine, but were significantly reduced after the olanzapine treatment. The baseline prolactin levels were not influenced by clozapine treatment, and were moderately but significantly increased after treatment with olanzapine. The results indicate that there is a difference between the two drugs in their capacity to block dopamine receptors at the hypothalamus-pituitary level, and match the results obtained by SPECT receptor binding studies for striatal dopamine receptors.
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Antipsicóticos/uso terapéutico , Clomipramina , Clozapina/uso terapéutico , Haloperidol , Pirenzepina/uso terapéutico , Prolactina/sangre , Esquizofrenia/tratamiento farmacológico , Adulto , Antipsicóticos/efectos adversos , Benzodiazepinas , Enfermedad Crónica , Clozapina/efectos adversos , Humanos , Sistema Hipotálamo-Hipofisario/efectos de los fármacos , Masculino , Persona de Mediana Edad , Olanzapina , Pirenzepina/efectos adversos , Pirenzepina/análogos & derivados , Escalas de Valoración Psiquiátrica , Receptores de Dopamina D2/efectos de los fármacos , Receptores de Serotonina/efectos de los fármacos , Esquizofrenia/sangre , Resultado del TratamientoRESUMEN
A case is presented of a 30-year-old man, prescribed zolpidem for insomnia arising from cocaine abuse, who sought to use this hypnotic to reduce his craving for cocaine. However, after taking cocaine and up to 300 mg/day zolpidem, he became euphoric and hyperactive. It is suggested that at high doses, zolpidem, like cocaine, has a stimulatory effect on the brain dopaminergic reward pathway. (Int J Psych Clin Pract 2002; 6: 217-219 ).
RESUMEN
BACKGROUND: Psychotic (delusional) major depression (PMD) in the elderly is a common condition in inpatient settings. There is evidence that late age onset depressives are more likely to be psychotic. OBJECTIVES: The aim of this study was to investigate the frequency, sociodemographic, and clinical characteristics of PMD in hospitalized elderly depressives. METHODS: The sample consisted of 118 elderly patients consecutively admitted at three different clinics. All patients fulfilled DSM-IV criteria for major depression disorder and were diagnosed on the basis of Structured Clinical Interview for DSM-IV (SCID). The subjects were also assessed using the Hamilton Rating Scale for Depression, the Mini Mental State Examination (MMSE) and a physical health rating scale. RESULTS: PMD was positively associated with age of depression onset over 60 [corrected]. The PMD patients were also more severely depressed, more psychomotorically retarded and referred more past psychotic depressive episodes. Furthermore, age at onset influenced the type of delusions, so that PMD patients with age [corrected] over 60 at onset expressed delusions of hypochondriacal and nihilistic content more frequently. CONCLUSIONS: The results of our study demonstrated that PMD in the elderly has a later age at onset.
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Envejecimiento/psicología , Trastorno Depresivo/psicología , Esquizofrenia Paranoide/psicología , Edad de Inicio , Anciano , Anciano de 80 o más Años , Psiquiatría Geriátrica , Estado de Salud , Humanos , Escala del Estado Mental , Persona de Mediana Edad , Admisión del Paciente , Factores de Riesgo , Índice de Severidad de la EnfermedadRESUMEN
Deficits of working memory (WM) are recognized as an important pathological feature in schizophrenia. Since the P600 component of event related potentials has been hypothesized that represents aspects of second-pass parsing processes of information processing, and is related to WM, the present study focuses on P600 elicited during a WM test in drug-naive first-episode schizophrenics (FES) compared to healthy controls. We examined 16 drug-naive first-episode schizophrenic patients and 23 healthy controls matched for age and sex. Compared with controls schizophrenic patients showed reduced P600 amplitude on left temporoparietal region and increased P600 amplitude on left occipital region. With regard to the latency, the patients exhibited significantly prolongation on right temporoparietal region. The obtained pattern of differences classified correctly 89.20% of patients. Memory performance of patients was also significantly impaired relative to controls. Our results suggest that second-pass parsing process of information processing, as indexed by P600, elicited during a WM test, is impaired in FES. Moreover, these findings lend support to the view that the auditory WM in schizophrenia involves or affects a circuitry including temporoparietal and occipital brain areas.
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Antipsicóticos/farmacología , Corteza Cerebral/fisiopatología , Potenciales Evocados/fisiología , Trastornos de la Memoria/etiología , Memoria a Corto Plazo/fisiología , Tiempo de Reacción/fisiología , Esquizofrenia/complicaciones , Estimulación Acústica , Adulto , Edad de Inicio , Corteza Cerebral/patología , Enfermedad Crónica , Electroencefalografía , Femenino , Hospitalización , Humanos , Masculino , Trastornos de la Memoria/patología , Trastornos de la Memoria/fisiopatología , Pruebas Neuropsicológicas , Valor Predictivo de las Pruebas , Esquizofrenia/patología , Esquizofrenia/fisiopatología , Distribuciones EstadísticasRESUMEN
BACKGROUND: Nitric oxide (NO) is a soluble gas produced by the activity of an enzyme found in neurons. It has been implicated in a great number of normal physiological functions (such as noradrenaline and dopamine release, memory and learning, regulation of the cerebrovascular system, modulation of wakefulness, modulation of nociception, olfaction, food intake and drinking) as well as pathologies (Alzheimer's, Huntington's disease, cerebral ischemia, stroke). Two reports have addressed the involvement of NO in depression. METHODS: The objective of the study was to examine the association between NO and specific depressive symptoms. For this purpose, in a sample of 28 end-stage renal failure patients (who have increased NO levels), we tested the hypothesis that the subgroup of patients with these specific depressive symptoms was differentiated from the patients without these symptoms with regard to serum levels of NO metabolites. The depressive symptoms were assessed using the Zung self-rating scale. RESULTS: Our study revealed an association of NO with the following depressive symptoms: sexual dysfunction, weight loss, psychomotor retardation, indecisiveness and irritability. CONCLUSION: The association between NO system and symptoms of depression does not necessarily imply a pathogenetic association between NO and depressive disorder. Further research is needed to verify these findings and study their possible pathogenetic implications.
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Depresión/diagnóstico , Fallo Renal Crónico/psicología , Óxido Nítrico/sangre , Rol del Enfermo , Adulto , Depresión/sangre , Depresión/psicología , Femenino , Humanos , Fallo Renal Crónico/sangre , Masculino , Persona de Mediana Edad , Inventario de Personalidad , Diálisis Renal/psicologíaRESUMEN
Two hundred and fifty-five psychiatric inpatients with a definite diagnosis of DSM-IV schizophrenic disorder were examined by means of the Structured Clinical Interview and rated on the 30 main items of the Positive and Negative Syndrome Scale (PANSS). Patients' scores were subjected to a cluster analysis, using Ward's method. Cluster analysis indicated the existence of five groups. The first group (n = 46) comprised patients with overall psychopathology of minimal severity, the second group (n = 39) patients with severe positive symptoms along with symptoms of psychomotor excitement, the third group (n = 58) patients with severe positive psychopathology only, the fourth group (n = 34) patients with severe positive negative depressive and cognitive symptoms and, finally, the fifth group (n = 78) patients with severe negative symptoms only. Patients in the first and third groups were older and their illnesses were of longer duration compared to those of the remaining groups. With respect to DSM-IV clinical types of schizophrenic disorders, the paranoid type predominated in the second and the third groups, whereas the disorganized and catatonic types were markedly overpresented in the fifth group.