In vivo insulin sensitivity and adipocyte insulin binding and action were assessed in 16 patients with histologically proven hepatic cirrhosis and 11 age-, weight- and sex-matched normal control subjects. The cirrhotic group displayed impaired oral glucose tolerance, despite an exaggerated serum immunoreactive insulin response, and in vivo insulin resistance as assessed both by the euglycemic hyperinsulinemic clamp and the glucose-insulin infusion techniques. Adipocytes of the cirrhotic patients bound significantly less insulin than those of the control subjects (2.21 +/- 0.12% vs. 2.64 +/- 0.13%; p less than 0.05). Although the adipocytes from the cirrhotic patients were less sensitive to insulin stimulation in vitro (half-maximal stimulation at 60.0 +/- 8.0 vs. 21.8 +/- 3.3 pM; p less than 0.001), they exhibited higher maximum rates of lipogenesis. Comparison of the responses of the alcoholic, primary biliary cirrhosis and cryptogenic subgroups suggested pronounced differences in the maximum rates of lipogenesis. There were significant negative correlations between specific binding to adipocytes and both fasting serum immunoreactive insulin and in vivo insulin resistance as assessed by glucose-insulin infusion. Monocyte insulin binding was normal in the cirrhotic group and did not correlate with in vivo insulin resistance. It is concluded that both binding and postbinding defects in insulin target organ cells contribute to the marked in vivo insulin resistance of hepatic cirrhosis.

Adipose Tissue↗

PubMedDate not supplied

Primary preventive health care in children with heart disease.

In order to evaluate the preventive health care practices in children with heart disease, 499 families were surveyed in outpatient settings. Data were collected on 215 children with heart disease and 284 control children without known chronic illness. There was no significant difference between the groups in the type of primary physician utilized or frequency of visits to the primary care physician. Immunizations were incomplete in 32.7% of the children with heart disease compared to only 2.5% in the control group (P less than 0.0001). Among the children over 3 years of age with heart disease, 29% had not received routine dental care within the past year compared with 23.4% in the controls (P = NS). The parents of children with heart disease were found to pay less money out-of-pocket for their child's health care than the parents of control children (P less than 0.0001). The data suggest that important aspects of primary health care were neglected in a large group of children with heart disease and that cost was not a major cause for the inadequate preventive care delivery. An educational program directed at health care professionals and parents is proposed.

Adolescent↗