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1.
J Clin Endocrinol Metab ; 86(8): 3717-23, 2001 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-11502801

RESUMO

To elucidate the causes of the diminished incretin effect in type 2 diabetes mellitus we investigated the secretion of the incretin hormones, glucagon-like peptide-1 and glucose- dependent insulinotropic polypeptide and measured nonesterified fatty acids, and plasma concentrations of insulin, C peptide, pancreatic polypeptide, and glucose during a 4-h mixed meal test in 54 heterogeneous type 2 diabetic patients, 33 matched control subjects with normal glucose tolerance, and 15 unmatched subjects with impaired glucose tolerance. The glucagon-like peptide-1 response in terms of area under the curve from 0-240 min after the start of the meal was significantly decreased in the patients (2482 +/- 145 compared with 3101 +/- 198 pmol/liter.240 min; P = 0.024). In addition, the area under the curve for glucose-dependent insulinotropic polypeptide was slightly decreased. In a multiple regression analysis, a model with diabetes, body mass index, male sex, insulin area under the curve (negative influence), glucose-dependent insulinotropic polypeptide area under the curve (negative influence), and glucagon area under the curve (positive influence) explained 42% of the variability of the glucagon-like peptide-1 response. The impaired glucose tolerance subjects were hyperinsulinemic and generally showed the same abnormalities as the diabetic patients, but to a lesser degree. We conclude that the meal-related glucagon-like peptide-1 response in type 2 diabetes is decreased, which may contribute to the decreased incretin effect in type 2 diabetes.


Assuntos
Diabetes Mellitus Tipo 2/sangue , Glucagon/metabolismo , Intolerância à Glucose/sangue , Fragmentos de Peptídeos/metabolismo , Peptídeos/metabolismo , Precursores de Proteínas/metabolismo , Análise de Variância , Autoanticorpos/sangue , Glicemia/metabolismo , Peptídeo C/sangue , Diabetes Mellitus Tipo 2/fisiopatologia , Jejum , Ácidos Graxos não Esterificados/sangue , Feminino , Polipeptídeo Inibidor Gástrico/sangue , Glucagon/sangue , Peptídeo 1 Semelhante ao Glucagon , Intolerância à Glucose/fisiopatologia , Glutamato Descarboxilase/imunologia , Hemoglobinas Glicadas/análise , Humanos , Insulina/sangue , Masculino , Pessoa de Meia-Idade , Polipeptídeo Pancreático/sangue , Fragmentos de Peptídeos/sangue , Peptídeos/sangue , Precursores de Proteínas/sangue , Valores de Referência
6.
Ugeskr Laeger ; 152(10): 678-80, 1990 Mar 05.
Artigo em Dinamarquês | MEDLINE | ID: mdl-2321286

RESUMO

Two cases of fulminant pneumococcal septicaemia are reported. These occurred 18 and 25 years after splenectomy. These patients had not received pneumococcal vaccination. Disseminated intravascular coagulation developed early and was of decisive significance for the course of the illness with lethal issue. The characteristic clinical picture in pneumococcal speticaemia in asplenic patients may be misinterpreted initially as influenza and meticulous observation is therefore necessary and antibiotic treatment according to current guidelines should be initiated as early possible in febrile episodes.


Assuntos
Coagulação Intravascular Disseminada/etiologia , Infecções Pneumocócicas/etiologia , Sepse/etiologia , Esplenectomia/efeitos adversos , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Fatores de Tempo
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