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1.
Arq. neuropsiquiatr ; 67(3a): 633-638, Sept. 2009. ilus
Article in English | LILACS | ID: lil-523611

ABSTRACT

We previously demonstrated correlation between parasympathetic dysfunction and brain white matter lesions in chronic chagasic patients. OBJECTIVE: To correlate serum functional circulating antibodies with beta adrenergic (Ab-β), muscarinic (Ab-M) or muscarinic and beta adrenergic (Ab-Mβ) activity, the autonomic system function and brain lesions in chronic chagasic patients. METHOD: In fifteen consecutive chagasic patients, the autonomic nervous system was evaluated and brain magnetic resonance imaging (MRI) was performed. The sera of all patients were tested to the presence of circulating functional antibodies. RESULTS: Sera from 11 of 15 chronic chagasic patients had some activity (Ab-β: 7; Ab-M: 1; Ab-Mβ: 3); however, there was no significant correlation between the presence of antibodies and the autonomic system function or the presence of hyperintensities in MRI. CONCLUSION: The mechanism involved in the genesis of hyperintense lesions seen in brain MRI of chronic chagasic patients is still unresolved, although apparently related to parasympathetic dysfunction.


A correlação entre disfunção parassimpática e lesões de substância branca cerebral em pacientes chagásicos já foi previamente demonstrada. OBJETIVO: Correlacionar a presença de anticorpos circulantes funcionais com atividade beta-adrenérgica (Ab-β), muscarínica (Ab-M) ou muscarínica e beta adrenérgica (Ab-Mβ), a presença de disautonomia e lesões de substância branca cerebral em pacientes chagásicos crônicos. MÉTODO: Em quinze pacientes chagásicos consecutivos, foram realizados a avaliação do sistema nervoso autônomo e ressonância magnética (RM) do crânio. O soro dos pacientes foi testado para a presença de anticorpos funcionais circulantes. RESULTADOS: O soro de 11 dos 15 pacientes chagásicos apresentou alguma atividade (Ab-β: 7; Ab-M: 1; Ab-Mβ: 3); porém não houve correlação significativa entre a presença de anticorpos circulantes e disautonomia ou de hiperintensidades à RM. CONCLUSÃO: O mecanismo envolvido na gênese das lesões hiperintensas à RM do crânio dos pacientes chagásicos crônicos não está esclarecida ainda, apesar de aparentemente relacionada à disfunção parassimpática.


Subject(s)
Animals , Female , Humans , Male , Middle Aged , Rabbits , Autonomic Nervous System Diseases , Autoantibodies/blood , Brain , Chagas Disease , Receptors, Adrenergic, beta/immunology , Receptors, Muscarinic/immunology , Autonomic Nervous System Diseases/immunology , Autonomic Nervous System Diseases/pathology , Autonomic Nervous System Diseases/physiopathology , Brain/immunology , Brain/pathology , Chronic Disease , Chagas Disease/immunology , Chagas Disease/pathology , Chagas Disease/physiopathology , Prospective Studies , Trypanosoma cruzi
2.
Arq. bras. endocrinol. metab ; 52(2): 398-406, mar. 2008.
Article in Portuguese | LILACS | ID: lil-481008

ABSTRACT

O acometimento patológico do sistema nervoso no diabetes melito é muito amplo e, freqüentemente, bastante grave. A prevalência de neuropatia diabética atinge níveis elevados com a evolução temporal do diabetes, chegando, geralmente, a freqüências acima de 50 por cento de lesão neurológica em diferentes grupos de pacientes analisados em nosso meio e no exterior. A lesão neurológica nesta situação patológica é extensa no organismo humano diabético, envolvendo amplamente todo o sistema nervoso periférico nos seus componentes sensitivo-motor e autonômico: com clínica característica e concordante com as hipóteses patogênicas de natureza metabólica e/ou microvascular. O sistema nervoso autonômico é o elemento fundamental na regulação da função da maior parte dos sistemas ou órgãos no organismo, portanto, a sua lesão pode trazer importantes alterações para as funções cardiovascular, respiratória, digestiva, urinária e genital, podendo influir na função vital de alguns desses órgãos ou sistemas. Este artigo aborda as alterações decorrentes da lesão do sistema nervoso autonômico, especialmente nos pacientes diabéticos tipo 1, procurando dimensionar o risco de morbimortalidade.


The pathological alteration of the nervous system in diabetic patients is extensive and frequently severe. The prevalence of the diabetic neuropathy reach high levels with the evolution of the diabetes, often showing frequencies higher than 50 percent in several groups of patients. The neurological lesion in this pathological situation is extensive in the diabetic patient, including widely the peripheral nervous system with its components sensory, motor and autonomic: with typical symptoms and in accordance with the pathogenesis of metabolic origin and/or microvascular disease. The autonomic nervous system is a main regulator of many systems in the human body. Then its lesion can promote significant alterations in the function of the cardiovascular, respiratory, gastrointestinal, urogenital system, that can be related to increased motality. This review anlyses the abnormalities related to lesion of the autonomic nervous system, particularly in type 1 diabetic patients, trying to characterize the risk of morbidity and mortality.


Subject(s)
Female , Humans , Male , Autonomic Nervous System Diseases/physiopathology , Diabetes Mellitus, Type 1/complications , Diabetic Neuropathies/etiology , Autonomic Nervous System Diseases/etiology , Autonomic Nervous System Diseases/pathology , Body Temperature Regulation/physiology , Chronic Disease , Cardiovascular Diseases/etiology , Cardiovascular Diseases/pathology , Cardiovascular Diseases/physiopathology , Diagnosis, Differential , Diabetes Mellitus, Type 1/pathology , Diabetes Mellitus, Type 1/physiopathology , Diabetic Angiopathies/pathology , Diabetic Angiopathies/physiopathology , Diabetic Neuropathies/pathology , Diabetic Neuropathies/physiopathology , Female Urogenital Diseases/etiology , Female Urogenital Diseases/pathology , Female Urogenital Diseases/physiopathology , Gastrointestinal Diseases/etiology , Gastrointestinal Diseases/pathology , Gastrointestinal Diseases/physiopathology , Male Urogenital Diseases/etiology , Male Urogenital Diseases/pathology , Male Urogenital Diseases/physiopathology , Risk Factors
4.
Medical Journal of Cairo University [The]. 1993; 64 (2): 293-297
in English | IMEMR | ID: emr-29305
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