This apparent paradox may be explained by the fact that, at a given level of BMD, MS patients present lower bone quality by means of various mechanisms, including hyperinsulinemia, deposition of advanced glycosylation endproducts (AGEs) in collagen, reduced serum levels of IGF-1, hypercalciuria, renal failure, microangiopathy and inflammation.
In hemodynamically stable fasting patients (days 3 7 after sepsis onset), a two-step insulin clamp protocol was used to achieve two levels of hyperinsulinemia while maintaining normoglycemia.
Given the association between hyperinsulinemia and pancreatic cancer [ 1], it has been suggested that excessive secretion of insulin by pancreatic β-cells required to maintain glucose homeostasis may directly influence pancreatic carcinogenesis in at-risk individuals.
Another possible explanation may be related to higher level of circulating insulin (hyperinsulinemia) in a recent diagnosis of diabetes than a more distant diagnosis.
As elevated insulin C- peptide level is a marker of hyperinsulinemia and indirectly insulin resistance, insulin resistance might be the cause of elevated ferritin levels in our patients, either directly or due to the steatosis itself.
Diabetes is associated with increased level of coagulation factors and hyperinsulinemia that have an important role in the development of microangiopathic stroke.
Therefore, the adjustment for fasting insulin levels may not have adequately captured the influence of hyperinsulinemia or insulin resistance.
Finally, persons with diabetes have lower concentrations of this hormone compared to non- diabetics; levels are also low in states of hyperinsulinemia and glucose intolerance.
In patients with T1DM, the combination of hyperinsulinemia and hyperglycemia decreased TF-PCA levels, whereas, as shown previously, it strongly increased TF-PCA levels in patients with T2DM and in nondiabetic control subjects (11, 13).
A possible role of hyperinsulinemia and increased free fatty acid levels, which are deleterious during acute myocardial ischemia and reperfusion, has been hypothesized.
