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PubMed2003

[Effect of hypercortisolism on development of atherosclerotic changes in blood vessels].

UNLABELLED: Hypercortisolism is associated with a high risk of sickness rate and death rate particularly in view of facilitated arteriosclerotic processes. It is most frequently induced by drug therapy, but endogenous hypercortisolism (Cushing's syndrome) may serve as a suitable model of the effect of hypercortisolism on vascular wall. Our cohort included the following groups of patients and control individuals: 1. a group of patients with florid so far untreated Cushing's syndrome--14 patients, 2. a control group to these patients--16 individuals, 3. a group recently operated on and healed-up patients with Cushing's syndrome--8 patients, 4. a group of previous of previous cured-up patients with Cushing's syndrome--27 subjects, 5. a control group to those patients of group 4--17 persons. The following differences were found between the respective groups: 1. the ultrasonographic examination of carotid arteries demonstrated sclerotic plates or carotid stenosis in 21.3% of patients with florid Cushing's syndrome and 41.4% in patients with corticolism having been cured-up against 11.7% in the relevant control group; 2. the examination of skin microcirculation by the laser-doppler method revealed a lower velocity of perfusion increase during examination of postocclusion hyperemia in patients with florid Cushing's syndrome and hypercortisolism having been cured-up against a control group (CUSH., P < 0.04; previous cured-up, P < 0.02) as well as thermally-induced hyperemia (CUSH., P < 0.03; formerly cured-up, P < 0.04); 3. the laboratory examination of patients with florid Cushing's syndrome revealed higher values of LDL-cholesterol (P < 0.05) and total cholesterol (P < 0.001), malonyldialdehyde as an indicator of increased formation of oxygen radicals (P < 0.05) and oromucoid, the protein of acute phase, signaling a chronic inflammation (P < 0.05); 4. in patients who previously suffered from hypercortisolism increased levels of fibrinogen (P < 0.03) and the cytoadhesive molecule ICAM-1 (P < 0.05) were accompanied by decreased levels of the growth factor of vascular endothelia (VEGF) (P < 0.05) against patients with florid Cushing's syndrome. CONCLUSION: The findings of the examinations performed indicate that increased incidence of arteriosclerotic processes is present in patients with the florid Cushing's syndrome as well as in those who have suffered from Cushing's syndrome before.

Adrenocortical Hyperfunction↗
PubMedDate not supplied

Evaluation of the basal and post-adrenocorticotrophic hormone serum concentrations of 17-hydroxyprogesterone for the diagnosis of hyperadrenocorticism in dogs.

Serum concentrations of 17-hydroxyprogesterone and cortisol were measured before and after the administration of exogenous adrenocorticotrophic hormone (ACTH) to three groups of dogs: 27 healthy dogs (group 1), 19 dogs with non-adrenal illness (group 2) and 46 dogs with hyperadrenocorticism (group 3). The median (range) post-ACTH concentrations of 17-hydroxyprogesterone were 5.0 (22.2 to 16.8), 6.9 (2.0 to 36.2) and 14.4 (1.7 to 71) nmol/litre in groups 1, 2 and 3, respectively. There were no significant differences in the basal or post-ACTH concentrations of cortisol or 17-hydroxyprogesterone between groups 1 and 2. The post-ACTH concentrations of 17-hydroxyprogesterone in group 3 were significantly (P<0.001) greater than those in groups 1 and 2 combined. The area under the receiver operating curve (ROC) for the post-ACTH concentration of cortisol (0.94) was significantly greater than that for the post-ACTH concentration of 17-hydroxyprogesterone (0.76). Using a two-graph ROC analysis, a cut-off of 8.5 nmol/litre was found to maximise both the sensitivity and specificity of the post-ACTH concentration of 17-hydroxyprogesterone for the diagnosis of hyperadrenocorticism at 71 per cent. With a cut-off of 4.5 nmol/litre the sensitivity increased to 90 per cent but the specificity decreased to 40 per cent; with a cut-off of 16.7 nmol/litre the specificity increased to 90 per cent but the sensitivity decreased to 47 per cent.

17-alpha-Hydroxyprogesterone↗