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1.
Transl Psychiatry ; 7(5): e1116, 2017 05 02.
Artigo em Inglês | MEDLINE | ID: mdl-28463239

RESUMO

The aetiology of suicidal behaviour is complex, and knowledge about its neurobiological mechanisms is limited. Neuroimaging methods provide a noninvasive approach to explore the neural correlates of suicide vulnerability in vivo. The ENIGMA-MDD Working Group is an international collaboration evaluating neuroimaging and clinical data from thousands of individuals collected by research groups from around the world. Here we present analyses in a subset sample (n=3097) for whom suicidality data were available. Prevalence of suicidal symptoms among major depressive disorder (MDD) cases ranged between 29 and 69% across cohorts. We compared mean subcortical grey matter volumes, lateral ventricle volumes and total intracranial volume (ICV) in MDD patients with suicidal symptoms (N=451) vs healthy controls (N=1996) or MDD patients with no suicidal symptoms (N=650). MDD patients reporting suicidal plans or attempts showed a smaller ICV (P=4.12 × 10-3) or a 2.87% smaller volume compared with controls (Cohen's d=-0.284). In addition, we observed a nonsignificant trend in which MDD cases with suicidal symptoms had smaller subcortical volumes and larger ventricular volumes compared with controls. Finally, no significant differences (P=0.28-0.97) were found between MDD patients with and those without suicidal symptoms for any of the brain volume measures. This is by far the largest neuroimaging meta-analysis of suicidal behaviour in MDD to date. Our results did not replicate previous reports of association between subcortical brain structure and suicidality and highlight the need for collecting better-powered imaging samples and using improved suicidality assessment instruments.


Assuntos
Encéfalo/diagnóstico por imagem , Transtorno Depressivo Maior/diagnóstico por imagem , Imageamento por Ressonância Magnética/métodos , Neuroimagem/métodos , Ideação Suicida , Adulto , Idoso , Encéfalo/anatomia & histologia , Encéfalo/patologia , Transtorno Depressivo Maior/epidemiologia , Transtorno Depressivo Maior/psicologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Prevalência , Fatores de Risco , Suicídio/psicologia , Suicídio/estatística & dados numéricos , Adulto Jovem
2.
Nervenarzt ; 87(3): 278-85, 2016 Mar.
Artigo em Alemão | MEDLINE | ID: mdl-26940212

RESUMO

BACKGROUND: Chronic depression is a frequent mental disorder representing a significant subjective and economic burden. Effective disorder-specific treatment of chronic depression presupposes sufficient funding of treatment resources. OBJECTIVE: Definition of normative needs of personnel resources for guideline-compliant and evidence-based inpatient treatment of chronic depression based on treatment duration and intensity. The personnel resources determined were compared to the resources provided on the basis of the existing reimbursement system (Psych-PV) in Germany. MATERIAL AND METHODS: Resources determined according to national treatment guidelines and empirical evidence were compared to personnel resources dictated by the German Psych-PV reimbursement algorithm. RESULTS: The current funding algorithm greatly underestimates the resources needed for a guideline-compliant and evidence-based treatment program, even if healthcare providers received 100 % reimbursement of the sum determined by the Psych-PV algorithm. DISCUSSION: The results clearly show that even in the case of a full coverage of the current German reimbursement algorithm, funding allocation for evidence-based inpatient treatment of chronic depression is insufficient. In addition, the difficulties of specific coding of chronic depression in the ICD-10 system generates a major problem in the attempt to measure the current resources needed for sufficient treatment.


Assuntos
Depressão/terapia , Hospitais Psiquiátricos/estatística & dados numéricos , Hospitais Psiquiátricos/normas , Admissão e Escalonamento de Pessoal/estatística & dados numéricos , Psiquiatria , Psicoterapia/normas , Adulto , Idoso , Doença Crônica , Competência Clínica/economia , Competência Clínica/normas , Depressão/economia , Depressão/psicologia , Feminino , Alemanha/epidemiologia , Fidelidade a Diretrizes/economia , Fidelidade a Diretrizes/normas , Fidelidade a Diretrizes/estatística & dados numéricos , Hospitais Psiquiátricos/economia , Humanos , Masculino , Pessoa de Meia-Idade , Avaliação das Necessidades/economia , Admissão e Escalonamento de Pessoal/economia , Guias de Prática Clínica como Assunto , Prevalência , Psiquiatria/economia , Psiquiatria/normas , Psiquiatria/estatística & dados numéricos , Psicoterapia/economia , Psicoterapia/estatística & dados numéricos , Revisão da Utilização de Recursos de Saúde , Recursos Humanos , Adulto Jovem
3.
Eur Psychiatry ; 33: 18-36, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26854984

RESUMO

PURPOSE: Patients with chronic depression (CD) by definition respond less well to standard forms of psychotherapy and are more likely to be high utilizers of psychiatric resources. Therefore, the aim of this guidance paper is to provide a comprehensive overview of current psychotherapy for CD. The evidence of efficacy is critically reviewed and recommendations for clinical applications and research are given. METHODS: We performed a systematic literature search to identify studies on psychotherapy in CD, evaluated the retrieved documents and developed evidence tables and recommendations through a consensus process among experts and stakeholders. RESULTS: We developed 5 recommendations which may help providers to select psychotherapeutic treatment options for this patient group. The EPA considers both psychotherapy and pharmacotherapy to be effective in CD and recommends both approaches. The best effect is achieved by combined treatment with psychotherapy and pharmacotherapy, which should therefore be the treatment of choice. The EPA recommends psychotherapy with an interpersonal focus (e.g. the Cognitive Behavioural Analysis System of Psychotherapy [CBASP]) for the treatment of CD and a personalized approach based on the patient's preferences. DISCUSSION: The DSM-5 nomenclature of persistent depressive disorder (PDD), which includes CD subtypes, has been an important step towards a more differentiated treatment and understanding of these complex affective disorders. Apart from dysthymia, ICD-10 still does not provide a separate entity for a chronic course of depression. The differences between patients with acute episodic depression and those with CD need to be considered in the planning of treatment. Specific psychotherapeutic treatment options are recommended for patients with CD. CONCLUSION: Patients with chronic forms of depression should be offered tailored psychotherapeutic treatments that address their specific needs and deficits. Combination treatment with psychotherapy and pharmacotherapy is the first-line treatment recommended for CD. More research is needed to develop more effective treatments for CD, especially in the longer term, and to identify which patients benefit from which treatment algorithm.


Assuntos
Antidepressivos/uso terapêutico , Transtorno Depressivo , Psicoterapia/métodos , Doença Crônica , Terapia Combinada/métodos , Depressão , Transtorno Depressivo/diagnóstico , Transtorno Depressivo/psicologia , Transtorno Depressivo/terapia , Manual Diagnóstico e Estatístico de Transtornos Mentais , Europa (Continente) , Humanos , Avaliação de Processos e Resultados em Cuidados de Saúde , Escalas de Graduação Psiquiátrica
5.
Mol Psychiatry ; 21(6): 806-12, 2016 06.
Artigo em Inglês | MEDLINE | ID: mdl-26122586

RESUMO

The pattern of structural brain alterations associated with major depressive disorder (MDD) remains unresolved. This is in part due to small sample sizes of neuroimaging studies resulting in limited statistical power, disease heterogeneity and the complex interactions between clinical characteristics and brain morphology. To address this, we meta-analyzed three-dimensional brain magnetic resonance imaging data from 1728 MDD patients and 7199 controls from 15 research samples worldwide, to identify subcortical brain volumes that robustly discriminate MDD patients from healthy controls. Relative to controls, patients had significantly lower hippocampal volumes (Cohen's d=-0.14, % difference=-1.24). This effect was driven by patients with recurrent MDD (Cohen's d=-0.17, % difference=-1.44), and we detected no differences between first episode patients and controls. Age of onset ⩽21 was associated with a smaller hippocampus (Cohen's d=-0.20, % difference=-1.85) and a trend toward smaller amygdala (Cohen's d=-0.11, % difference=-1.23) and larger lateral ventricles (Cohen's d=0.12, % difference=5.11). Symptom severity at study inclusion was not associated with any regional brain volumes. Sample characteristics such as mean age, proportion of antidepressant users and proportion of remitted patients, and methodological characteristics did not significantly moderate alterations in brain volumes in MDD. Samples with a higher proportion of antipsychotic medication users showed larger caudate volumes in MDD patients compared with controls. This currently largest worldwide effort to identify subcortical brain alterations showed robust smaller hippocampal volumes in MDD patients, moderated by age of onset and first episode versus recurrent episode status.


Assuntos
Encéfalo/patologia , Transtorno Depressivo Maior/patologia , Adulto , Estudos de Casos e Controles , Feminino , Hipocampo/patologia , Humanos , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Neuroimagem/métodos
6.
Nervenarzt ; 86(5): 542-8, 2015 May.
Artigo em Alemão | MEDLINE | ID: mdl-25877043

RESUMO

BACKGROUND: Unipolar depression is of high relevance in German inpatient treatment. An effective psychiatric psychotherapeutic hospital treatment also requires sufficient staff for carrying out psychotherapeutic treatment. AIMS AND OBJECTIVES: The aim of this study was to define the staff requirements for guideline-adherent psychiatric-psychotherapeutic inpatient treatment of depression on the basis of a weekly treatment schedule for a 5-week admission period. A further aim was to compare the staff required with the resources defined by the German psychiatric staffing regulations (Psych-PV). MATERIAL AND METHODS: The weekly schedule was normatively defined on the basis of the current evidence for treatment efficacy and effectiveness. The staff required was calculated on the basis of the weekly schedule. The time for psychotherapy defined by the Psych-PV was calculated using the treatment classification provided by a large nationwide database. RESULTS: Regarding psychotherapy, 280 min per week is regarded as necessary and usually sufficient according to the current evidence. The results showed clearly higher requirements of working time of psychiatrists and psychologists than those defined by the Psych-PV. In particular, the Psych-PV allows only 72 min for psychotherapy per patient and week and only a limited amount of direct patient contact with psychiatrists. CONCLUSION: The figures provided impressively show that the Psych-PV does not allow effective guideline-adherent hospital treatment within a reasonable length of hospital stay. Despite its evidential effectiveness, psychotherapeutic treatment cannot be sufficiently provided under the current financing circumstances.


Assuntos
Transtorno Depressivo/terapia , Hospitais Psiquiátricos/estatística & dados numéricos , Hospitais Psiquiátricos/normas , Admissão e Escalonamento de Pessoal/estatística & dados numéricos , Admissão e Escalonamento de Pessoal/normas , Psicoterapia/estatística & dados numéricos , Transtorno Depressivo/psicologia , Alemanha , Fidelidade a Diretrizes/estatística & dados numéricos , Humanos , Guias de Prática Clínica como Assunto , Psicoterapia/normas , Revisão da Utilização de Recursos de Saúde , Carga de Trabalho
7.
Nervenarzt ; 84(7): 813-22, 2013 Jul.
Artigo em Alemão | MEDLINE | ID: mdl-23817983

RESUMO

In general work involves health promoting functions but can also have hazardous impacts on well-being. Due to a massive change in working conditions it has become increasingly more recognized that depressive disorders are highly prevalent at the workplace and that work stress belongs to the most common triggers of depressive disorders, particularly in men. It is relevant to differentiate between subjectively experienced burnout and clinical depression. The best investigated psychosocial work stressors include increased job demands in connection with low control possibilities and lack of gratification, interpersonal conflicts, role stress and social isolation. For the treatment of work-related clinical depression, an additional focus of interpersonal psychotherapy (IPT) of depression, namely "work-related stress and burnout experience" was conceptualized based on a vulnerability-stress model and the fact that work usually takes place in an interpersonal context. This new problem area focuses on role stress and conflicts at work and the reduction of stressful working conditions. Interpersonal psychotherapy has so far been useful for the treatment of depression due to problems at work; however, further studies are needed to evaluate the efficacy of this newly designed problem area.


Assuntos
Esgotamento Profissional/diagnóstico , Esgotamento Profissional/terapia , Transtorno Depressivo/diagnóstico , Transtorno Depressivo/terapia , Doenças Profissionais/diagnóstico , Doenças Profissionais/terapia , Psicoterapia/métodos , Esgotamento Profissional/psicologia , Transtorno Depressivo/psicologia , Alemanha , Humanos , Doenças Profissionais/psicologia , Carga de Trabalho/psicologia
8.
Handb Clin Neurol ; 106: 633-41, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22608648

RESUMO

Psychotherapy plays an essential role in the treatment of mental disorders. The use and research of psychological treatment strategies increased drastically over the past decade. The general efficacy of psychotherapy for the treatment of psychiatric diseases is proved and documented in several meta-analyses. Psychotherapy re-searchers have found solutions for acceptable study designs which account for the special character of these interventions and studied the efficacy of psychotherapeutic treatment in more than 1000 intervention trials.Meanwhile evidence-based psychotherapy approaches tailored to a specific diagnosis are dominating the field and question the basis of psychotherapy schools.A new field of research in psychotherapy is the neurobiological basis of mental disorders and the demonstration of neurobiological changes with psycho-therapeutic treatment.


Assuntos
Transtornos Mentais/psicologia , Transtornos Mentais/terapia , Psicoterapia/métodos , Medicina Baseada em Evidências , Humanos
9.
Nervenarzt ; 82(11): 1414, 1416, 1418-24, 2011 Nov.
Artigo em Alemão | MEDLINE | ID: mdl-22051968

RESUMO

The general efficacy of psychotherapeutic approaches in the treatment of mental disorders has been demonstrated by meta-analyses. Disorder-specific methods are increasingly dominating the field. In the field of depression psychological interventions have proven to be as equally effective as pharmacotherapy in mild and moderate depressives but with longer lasting effects after termination of treatment. The combination of both methods is particularly relevant for the therapy of severe and chronic depression. The indications should be differentiated beyond the severity and course of the disorder, e.g. according to previous traumatization, comorbidity, patient difficulty and the empirical evidence of the different approaches.


Assuntos
Depressão/epidemiologia , Depressão/terapia , Avaliação de Resultados em Cuidados de Saúde/métodos , Avaliação de Resultados em Cuidados de Saúde/estatística & dados numéricos , Psicoterapia/métodos , Psicoterapia/estatística & dados numéricos , Depressão/psicologia , Alemanha/epidemiologia , Humanos , Prevalência , Resultado do Tratamento
10.
Acta Psychiatr Scand ; 123(4): 276-82, 2011 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-21231926

RESUMO

OBJECTIVE: Evaluation of the long-term benefits of combined pharmacological and psychotherapeutic depression treatment and the differential impact of early childhood trauma. METHOD: A randomized trial was conducted in 124 in-patients with a diagnosis of major depressive disorder comparing 5 weeks of interpersonal psychotherapy plus pharmacotherapy (IPT) with medication plus clinical management (CM). The study included a prospective, naturalistic follow-up 3, 12 and 75 months after in-patient treatment. The Hamilton Rating Scale for Depression (HRSD) served as the primary outcome measure. RESULTS: Patients in both treatments reduced their depressive symptoms between baseline and 5-year follow-up significantly with a faster decrease early in the follow-up phase. The time rate of change and acceleration on the HRSD was higher for patients in the combination therapy group. The contrast between the conditions at year 5 was non-significant. However, 28% of the IPT patients showed a sustained remission compared with 11% of the CM patients (P = 0.032). Early adversity was found to be a moderator of the relationship between treatment and outcome. CONCLUSION: In the long-term, a combination of psycho- and pharmacotherapy was superior in terms of sustained remission rates to standard psychiatric treatment. Early trauma should be assessed routinely in depressed patients.


Assuntos
Antidepressivos , Transtorno Depressivo Maior/terapia , Psicoterapia de Grupo/organização & administração , Adolescente , Adulto , Idoso , Antidepressivos/farmacocinética , Antidepressivos/uso terapêutico , Maus-Tratos Infantis/psicologia , Terapia Combinada , Procedimentos Clínicos , Transtorno Depressivo Maior/etiologia , Transtorno Depressivo Maior/psicologia , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Escalas de Graduação Psiquiátrica , Índice de Gravidade de Doença , Equivalência Terapêutica , Tempo , Resultado do Tratamento
11.
Nervenarzt ; 80(7): 805-12, 2009 Jul.
Artigo em Alemão | MEDLINE | ID: mdl-19455296

RESUMO

BACKGROUND: Only few studies investigated the effectiveness of psychotherapy in post-stroke depression (PSD). The aim of this feasibility study was to compare interpersonal psychotherapy, pharmacotherapy, and their combination regarding depression and rehabilitation outcome. PATIENTS AND METHODS: Post-stroke depression was found in 35% of 485 stroke patients examined. Seventy-four PSD patients were randomised to one of three treatment conditions. Severity of depression was measured by the Hamilton Depression Rating Scale and the Hospital Anxiety and Depression Scale. The Barthel Index and a questionnaire for health-related quality of life were used as measurements of rehabilitation outcome. RESULTS: There were no significant differences between the three groups in patient mood or rehabilitation outcome. Concerning the severity of depression, quality of life, and social support, all patients showed benefits from antidepressive treatment. In addition a correlation was found between rehabilitation outcome and depression. CONCLUSION: In this feasibility study all antidepressive treatments were successfully implemented in the rehabilitation of post-stroke depressed patients. Combination therapy (interpersonal psychotherapy plus medication) was as effective as one of those elements alone. Because of the small sample size however, further randomized trials are required.


Assuntos
Depressão/epidemiologia , Depressão/reabilitação , Psicoterapia/estatística & dados numéricos , Sertralina/uso terapêutico , Reabilitação do Acidente Vascular Cerebral , Acidente Vascular Cerebral/epidemiologia , Idoso , Antidepressivos/uso terapêutico , Causalidade , Terapia Combinada/métodos , Terapia Combinada/estatística & dados numéricos , Comorbidade , Estudos de Viabilidade , Feminino , Alemanha/epidemiologia , Humanos , Incidência , Relações Interpessoais , Masculino , Pessoa de Meia-Idade , Resultado do Tratamento
12.
Nervenarzt ; 80(5): 540, 542-4, 546-8 passim, 2009 May.
Artigo em Alemão | MEDLINE | ID: mdl-19404606

RESUMO

The use of psychotherapeutic strategies is essential in the treatment of affective disorders. Psychotherapy proved to be at least equivalent to antidepressant medication in the treatment of mild to moderate depression. In severe cases, the combination of both treatments is considered by guidelines to be the standard treatment. Psychotherapeutic approaches show a longer latency than antidepressants; however, the effects are longer lasting. Regarding the effectiveness of pharmacotherapy sobering results have been published recently. Therefore, the further development of psychotherapy deserves special attention. Cognitive behavioral therapy and interpersonal therapy provide the highest evidence. The empirical basis for psychodynamic psychotherapies is still limited. In the treatment of chronic depression a new approach--cognitive behavioral analysis system of psychotherapy--is gaining importance. There is a trend towards an increasing specification of psychotherapy for distinct subgroups of depressed patients. Challenges for the future include increasing treatment efficacy, investigating mechanisms of efficacy and predictors for a differential indication, and making effective approaches generally available to all patients.


Assuntos
Depressão/diagnóstico , Depressão/terapia , Psicoterapia/métodos , Depressão/psicologia , Humanos
13.
Appl Spectrosc ; 62(2): 238-47, 2008 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-18284801

RESUMO

Several ionization potentials (IPs) of security relevant substances were determined with single photon ionization time of flight mass spectrometry (SPI-TOFMS) using monochromatized synchrotron radiation from the "Berliner Elektronenspeicherring-Gesellschaft für Synchrotronstrahlung" (BESSY). In detail, the IPs of nine explosives and related compounds, seven narcotics and narcotics precursors, and one chemical warfare agent (CWA) precursor were determined, whereas six IPs already known from the literature were verified correctly. From seven other substances, including one CWA precursor, the IP could not be determined as the molecule ion peak could not be detected. For these substances the appearance energy (AE) of a main fragment was determined. The analyzed security-relevant substances showed IPs significantly below the IPs of common matrix compounds such as nitrogen and oxygen. Therefore, it is possible to find photon energies in between, whereby the molecules of interest can be detected with SPI in very low concentrations due to the shielding of the matrix. All determined IPs except the one of the explosive EGDN were below 10.5 eV. Hence, laser-generated 118 nm photons can be applied for detecting almost all security-relevant substances by, e.g., SPI-TOFMS.


Assuntos
Substâncias para a Guerra Química/química , Substâncias Explosivas/química , Espectrometria de Massas/métodos , Fótons , Terrorismo/prevenção & controle , Substâncias para a Guerra Química/efeitos da radiação , Substâncias Explosivas/efeitos da radiação , Íons , Espectrometria de Massas/instrumentação , Síncrotrons
15.
Nervenarzt ; 77(3): 355-70; quiz 371, 2006 Mar.
Artigo em Alemão | MEDLINE | ID: mdl-16508747

RESUMO

Chronic depression is a common disorder which causes significant impairment and enormous treatment costs. Traditional pharmacological and psychological treatment approaches have shown only modest success. The Cognitive Behavioral Analysis System of Psychotherapy (CBASP) by James McCullough is the only therapy developed specifically for chronic depression. It integrates behavioral, cognitive, and interpersonal strategies. The approach is supported empirically and shown to be effective. This article presents the state of the art regarding research in psychotherapeutic treatment for chronic depression. In addition, the development of the approach and therapeutic strategies and techniques of CBASP are described.


Assuntos
Terapia Cognitivo-Comportamental/métodos , Transtorno Depressivo/terapia , Antidepressivos/uso terapêutico , Conscientização , Doença Crônica , Terapia Combinada , Transtorno Depressivo/diagnóstico , Transtorno Depressivo/psicologia , Transtorno Depressivo Maior/diagnóstico , Transtorno Depressivo Maior/psicologia , Transtorno Depressivo Maior/terapia , Humanos , Pesquisa , Transferência de Experiência , Transferência Psicológica , Resultado do Tratamento
16.
Nervenarzt ; 76(7): 865-6, 868-72, 873-4, 2005 Jul.
Artigo em Alemão | MEDLINE | ID: mdl-15599492

RESUMO

BACKGROUND: Several quality assurance initiatives in health care have been undertaken during the past years. The next step consists of systematically combining single initiatives in order to built up a strategic quality management. METHODS: In a German multicenter study, the quality of inpatient depression treatment was measured in ten psychiatric hospitals. Half of the hospitals received comparative feedback on their individual results in comparison to the other hospitals (bench marking). Those bench markings were used by each hospital as a statistic basis for in-house quality work, to improve the quality of depression treatment. RESULTS: According to hospital differences concerning procedure and outcome, different goals were chosen. There were also differences with respect to structural characteristics, strategies, and outcome. The feedback from participants about data-based quality circles in general and the availability of bench-marking data was positive. The necessity of carefully choosing quality circle members and professional moderation became obvious. CONCLUSIONS: Data-based quality circles including bench-marking have proven to be useful for quality management in inpatient depression care.


Assuntos
Transtorno Depressivo/epidemiologia , Transtorno Depressivo/terapia , Hospitais Psiquiátricos/estatística & dados numéricos , Participação nas Decisões , Garantia da Qualidade dos Cuidados de Saúde/métodos , Atitude do Pessoal de Saúde , Feminino , Alemanha/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade , Resultado do Tratamento
17.
Eur J Clin Invest ; 30(4): 311-6, 2000 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-10759879

RESUMO

BACKGROUND: Autonomic neuropathy resulting from long-term diabetes mellitus may affect heart innervation. However, so far diabetes induced morphological changes of cardiac nerves are not well-known. In this study human cardiac atrial tissue from diabetic patients was analysed by electron microscopy for structural alterations as a result of diabetic neuropathy. METHODS: In coronary bypass surgery, an edge of the right auricle was routinely resected for reason of extracorporal circulation. Thin cardiac tissue sections of 100 nm were studied by electron microscopy. Atrial tissue samples were collected from 5 patients with long-standing diabetes (for at least 8 years) and compared to atrial tissue samples from 5 patients without diabetes, equally undergoing coronary bypass surgery. RESULTS: In all atria-free nerve endings with unmyelinized, axons were observed. Cross sections of 479 axons from diabetic patients were compared to 419 axons of nondiabetic patients. The number of altered axons was significantly higher in cardiac tissue of diabetic patients (32%) in comparison to normal subjects (17%). In diabetic patients, 20% of the intra-axonal mitochondria were condensed or hydropic, whereas in nondiabetic patients only 4% of the mitochondria were altered. Membrane fragments were present in 21% of the axons in atria of diabetic patients compared to 10% in nondiabetic subjects. Only in cardiac axons from diabetic patients there were lamellar bodies, dissolved axoplasma and junctions between neighbouring axons in a minor number. Few vacuoles were present in axons of both groups. CONCLUSION: In myocardial atrial-free nerve fibre bundles of diabetic patients, the amount of degenerative changes was higher in comparison to atrial cardiac tissue from nondiabetic subjects. These morphological alterations may indicate manifestation of diabetic neuropathy and might contribute to the impairment of autonomic neural control affecting the heart in long-standing diabetes mellitus.


Assuntos
Doença das Coronárias/patologia , Angiopatias Diabéticas/patologia , Neuropatias Diabéticas/patologia , Átrios do Coração/inervação , Fibras Nervosas/ultraestrutura , Sistema Nervoso Simpático/ultraestrutura , Idoso , Axônios/patologia , Axônios/ultraestrutura , Ponte de Artéria Coronária , Doença das Coronárias/cirurgia , Angiopatias Diabéticas/cirurgia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fibras Nervosas/patologia , Sistema Nervoso Simpático/patologia
18.
Acta Anaesthesiol Scand ; 43(1): 77-81, 1999 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-9926193

RESUMO

BACKGROUND: It has been rarely reported that heat stress induces an early phase of protection against oxidative damage, whereas a delayed phase of protection is shown in heat stress. To explore the early effect of heat stress against oxidative damage, we evaluated the changes in contractility, lipid peroxidation, and ultrastructure induced by hydrogen peroxide (H2O2) with or without heat stress (HS) in human skeleton muscle. METHODS: Thirty-two muscle samples were obtained from the vastus lateralis muscle of 7 subjects. These specimens were divided into three groups based on form of treatment: HS (n = 13), non HS (n = 14), and control group (n = 5). The control group was performed under identical conditions without H2O2. Specimens in the HS group were incubated at 42 degrees C for 20 min, while those in the non-HS and control groups were maintained at 37 degrees C. RESULTS: The control group showed no significant change in contractile force. Although contractile force significantly decreased 30 min after H2O2 administration in both the HS and non-HS groups, only the HS group showed apparent recovery of contractile force 60 min after H2O2 administration. Lipid peroxidation was lower in the HS group than in the non-HS group. Ultrastructural examination revealed less mitochondrial damage in the HS group compared with the non-HS group. CONCLUSION: We found that human skeleton muscle escaped cellular damage induced by H2O2 in the early phase after heat stress. These data suggest evidence for an early effect of heat stress against ischemia/reperfusion injury in human muscle.


Assuntos
Transtornos de Estresse por Calor/metabolismo , Músculo Esquelético/metabolismo , Estresse Oxidativo/fisiologia , Adulto , Análise de Variância , Feminino , Transtornos de Estresse por Calor/patologia , Transtornos de Estresse por Calor/fisiopatologia , Humanos , Peróxido de Hidrogênio/farmacologia , Peroxidação de Lipídeos/efeitos dos fármacos , Peroxidação de Lipídeos/fisiologia , Masculino , Malondialdeído/análise , Microscopia Eletrônica , Mitocôndrias Musculares/efeitos dos fármacos , Mitocôndrias Musculares/ultraestrutura , Contração Muscular/efeitos dos fármacos , Contração Muscular/fisiologia , Músculo Esquelético/efeitos dos fármacos , Músculo Esquelético/fisiopatologia , Músculo Esquelético/ultraestrutura , Oxidantes/farmacologia , Estresse Oxidativo/efeitos dos fármacos , Recuperação de Função Fisiológica , Traumatismo por Reperfusão/metabolismo , Traumatismo por Reperfusão/fisiopatologia
19.
Drugs Exp Clin Res ; 22(3-5): 247-54, 1996.
Artigo em Inglês | MEDLINE | ID: mdl-8899341

RESUMO

The effects on different biophysiological parameters and subjective impressions were studied in a patient with breast cancer who was not previously given any therapy before receiving Ukrain. Daily measurements of pulse, blood pressure, temperature and various laboratory examinations were carried out. Development and course of subjective and objective phenomena seem to be typical for patients in whom Ukrain could induce long-term complete remission. The patient described here has had to data 12 years without any oncopathological symptoms.


Assuntos
Alcaloides/uso terapêutico , Antineoplásicos/uso terapêutico , Neoplasias da Mama/tratamento farmacológico , Alcaloides/efeitos adversos , Antineoplásicos/efeitos adversos , Aspartato Aminotransferases/sangue , Alcaloides de Berberina , Glicemia/efeitos dos fármacos , Pressão Sanguínea/efeitos dos fármacos , Proteínas Sanguíneas/metabolismo , Temperatura Corporal/efeitos dos fármacos , Neoplasias da Mama/sangue , Neoplasias da Mama/fisiopatologia , Eletrólitos/sangue , Feminino , Humanos , Leucócitos/efeitos dos fármacos , Pessoa de Meia-Idade , Fenantridinas , Pulso Arterial/efeitos dos fármacos
20.
Acad Radiol ; 2(7): 584-91, 1995 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-9419608

RESUMO

RATIONALE AND OBJECTIVES: The physicochemical properties of gadoteridol, a macrocyclic nonionic gadolinium complex, were studied together with its pharmacokinetics and biodistribution in rats and dogs. METHODS: Studies in rats were conducted after single intravenous injections at 0.1 or 0.35 mmol/kg using 153Gd-labeled gadoteridol or with seven daily doses of 0.1 mmol/kg to examine the levels of residual gadolinium in organs. Nonradioactive biodistribution and excretion studies were performed in dogs following injection at 0.1 mmol/kg. RESULTS: After injection, the dose was rapidly cleared from rat blood and excreted such that more than 90% of the dose appeared in the urine within 4 hr of injection. At 7 and 14 days postinjection, only extremely low levels of gadolinium were observed in liver and bone; these levels were two to eight times lower than the levels reported after the injection of gadopentetate dimeglumine. CONCLUSION: The extracellular distribution and rapid urinary excretion of gadoteridol is in agreement with data obtained with other gadolinium-containing chelates used as intravascular magnetic resonance imaging contrast agents. Differences observed in the long-term retention of gadolinium between gadoteridol and gadopentetate dimeglumine were consistent with the reported greater in vivo resistance to transmetallation of gadolinium macrocycles compared with the linear gadolinium chelate molecules.


Assuntos
Meios de Contraste/farmacocinética , Cães/metabolismo , Compostos Heterocíclicos/farmacocinética , Compostos Organometálicos/farmacocinética , Ratos Sprague-Dawley/metabolismo , Animais , Autorradiografia , Osso e Ossos/metabolismo , Meios de Contraste/administração & dosagem , Meios de Contraste/química , Feminino , Gadolínio/farmacocinética , Compostos Heterocíclicos/administração & dosagem , Compostos Heterocíclicos/química , Injeções Intravenosas , Fígado/metabolismo , Masculino , Compostos Organometálicos/administração & dosagem , Compostos Organometálicos/química , Concentração Osmolar , Radioisótopos , Ratos , Distribuição Tecidual , Viscosidade
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