Impaired cardiac performance in elderly patients with growth hormone deficiency(426 views) Colao A, Cuocolo A, Di Somma C, Cerbone G, Della Morte A, Nicolai E, Lucci R, Salvatore M, Lombardi G
Affiliations: Department of Molecular and Clinical Endocrinology and Oncology, Federico II University of Naples, 80131 Naples, Italy
Nuclear Medicine Center of the National Council of Research, Department of Biomorphological and Functional Sciences, Federico II University of Naples, 80131 Naples, Italy
INM Neuromed, Pozzilli, Italy
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Toogood, A. A., Shalet, S. M., Growth hormone deficiency in the elderly (1997) Curr Ther Endocrinol Metab, 6, pp. 645-649
Toogood, A. A., Jones, J., O'Neill, P. A., Thorner, M. O., Shalet, S. M., The diagnosis of severe growth hormone deficiency in elderly patients with hypothalamic-pituitary disease (1998) Clin Endocrinol (Oxf), 48, pp. 569-576
Toogood, A. A., Adams, J. E., O'Neill, P. A., Shalet, S. M., Body composition in growth hormone deficient adult over the age of 60 years (1996) Clin Endocrinol (Oxf), 45, pp. 399-405
Miller, T. R., Grossman, S. G., Schechtman, K. B., Biello, D. R., Ludbrook, P. A., Ehansi, A. A., Left ventricular diastolic filling and its association with age (1986) Am J Cardiol, 58, pp. 531-535
Bonow, R. O., Vitale, D. F., Bacharach, S. L., Maron, B. J., Green, M. V., Effects of aging on asynchronous left ventricular regional function and global ventricular filling in normal human subjects (1988) J Am Coll Cardiol, 11, pp. 50-58
Bonow, R. O., Bacharach, S. L., Green, M. V., Impaired left ventricular diastolic filling in patients with coronary artery disease: Assessment with radionuclide angiography (1981) Circulation, 64, pp. 315-323
Sahn, D. J., De Maria, A., Kissio, J., Weyman, A., The committee on M-mode standardization of the American Society of Echocardiography: Results of a survey of echocardiography measurements (1978) Circulation, 58, pp. 1072-1083
Devereux, R. B., Detection of left ventricular hypertrophy by M-mode echocardiography. Anatomic validation, standardization and comparison to other methods (1987) Hypertension, 9 (SUPPL. 11), pp. 19-26
Lamberts, S. W. J., Van den Beld, A. W., Van der Lely, A. J., The endocrinology of aging (1997) Science, 278, pp. 419-424
Toogood, A. A., O'Neill, P. A., Shalet, S. M., Beyond the somatopause: Growth hormone deficiency in adults over the age of 60 years (1996) J Clin Endocrinol Metab, 81, pp. 460-465
Hoffman, A. R., Lieberman, S. A., Butterfield, G., Thompson, J., Hintz, R. L., Ceda, G. P., Marcus, R., Functional consequences of the somatopause and its treatment (1997) Endocrine, 7, pp. 73-76
Wei, J. Y., Age and cardiovascular system (1992) N Engl J Med, 327, pp. 1735-1739
Impaired cardiac performance in elderly patients with growth hormone deficiency
Several evidences indicate that GH and/or insulin-like growth factor I (IGF-I) are involved in the regulation of cardiovascular function. In patients with childhood and adulthood-onset GH deficiency (GHD), the impairment of cardiac performance is manifest primarily as a reduction in the left ventricular (LV) mass (LVM), inadequacy of LV ejection fraction both at rest and at peak exercise, and abnormalities of LV diastolic filling. No study has been reported to date in elderly GHD patients that investigated cardiac function. In particular, it is unknown whether cardiac function is modified in accordance with patients' age as a physiological response to aging, as in normal subjects the rate and extent of LV filling are reduced with age. This study was designed to evaluate heart morphology and function, by echocardiography and equilibrium radionuclide angiography, respectively, in rigorously selected elderly patients with GHD but without evidence of other complications able to affect cardiac performance. Eleven patients with hypopituitarism (6 men and 5 women, aged 60-72 yr) and 11 sex- age- and body mass index-matched healthy subjects entered this study. None of the patients and controls presented with or had previously suffered from other concomitant diseases, such as diabetes mellitus, coronary artery diseases, long-standing hypertension, and hyperthyroidism, which could affect cardiac function. All patients had been previously operated on via the transsphenoidal and/or transcranic route for nonfunctioning pituitary adenoma, meningioma, or craniopharyngioma, and 6 of them had been irradiated. Eight patients had FSH/LH insufficiency, 5 had TSH insufficiency, and 6 had ACTH insufficiency, appropriately replaced. All subjects were tested with the combined arginine plus GHRH test showing a GH response below 9 μg/L. No significant difference was found in plasma IGF-I levels (49.2 ± 8.5 vs. 71.8 ± 7.5 μg/L) between patients and controls. However, IGF-I levels were lower than the normal range in 8 patients and 3 controls. Interventricular septum thickness (9.1 ± 0.2 vs. 9.1 ± 0.2 mm), LV posterior wall thickness (9.1 ± 0.2 vs. 9.0 ± 0.2 mm), and LVM after correction for body surface area (97.6 ± 1.8 vs. 99.9 ± 1.5 g/m2) were similar in patients and controls. Similarly, the LV ejection fraction at rest was similar in patients and controls (57.1 ± 2% vs. 63.2 ± 2.5%; P = NS), and it was normal (≥50%) in all controls and in 10 of 11 patients. By contrast, the LV ejection fraction at peak exercise was markedly depressed in elderly GHD patients compared to age-matched controls (51 ± 2.5% vs. 73.3 ± 3%; P < 0.001). A normal response (≥5% increase compared to basal value) of LV ejection fraction at peak exercise was found in 8 controls (72.7%) and in 2 of 11 patients (18.2%). No difference was found in the peak rate of LV filling, whether peak filling rate was normalized to end-diastolic volume (2.5 ± 0 2 vs. 2.6 ± 0.2 end-diastolic volume/s) or stroke volume (4.3 ± 0.3 vs. 4.0 ± 0.3 stroke volume/s), between patients and controls. Finally, exercise duration was significantly shorter in elderly GHD patients than in age-matched controls (7.2 ± 2.1 vs. 9.1 ± 0.2 min; P < 0.01). In the patient group, the GH peak after arginine plus GHRH test was significantly correlated with the LV ejection fraction at rest (r = 0.822; P < 0.01), whereas IGF-I was significantly correlated with the peak rate of LV filling whether the peak filling rate was normalized to end-diastolic volume (r = -0.863; P < 0.001) or stroke volume (r = -0.616; P < 0.05) or expressed as the ratio of peak filling rate to peak ejection fraction rate (r = -0.736; P < 0.01). Disease duration was significantly correlated with heart rate at peak exercise (r = 0.614; P < 0.05) and with systolic and diastolic blood pressures both at rest (r = 0.745; P < 0.01 and r = 0.650; P < 0.05) and at peak exercise (r = 0.684; P < 0.05 and r = 0.617; P < 0.05). The results of the present study demonstrated that, as in young and adult GHD patients, cardiac performance was impaired in elderly GHD patients, whereas cardiac mass was normal. These findings further support the potential usefulness of GH replacement in elderly hypopituitary patients.
Impaired cardiac performance in elderly patients with growth hormone deficiency
No results.
Impaired cardiac performance in elderly patients with growth hormone deficiency