Evaluation of Leptin Levels in Major beta-Thalassemic Patients
Abstract
Introduction: Leptin is an adipocyte-derived hormone. Exogenous leptin allows the recovery of the reproductive function. In humans, leptin correlates positively with the body mass index (BMI). The aim of this study was to investigate the association of leptin with the toxic effects of iron overload.
Methods: 219 Major Beta thalassemic patients (119 men, 100 women) and 137 non thalassemic individuals (86 men, 51 women) were investigated on the basis of a case control study. Data was gathered from six hospitals related to Tehran University during a seven month petiod (July 2006– January 2007). Blood samples of all major beta thalassemic patients who were admitted to these hospitals for recurrent blood transfusion were collected. Non thalassemic individuals were selected from outpatients who without significant medical problems, had come to these hospitals and had extra blood sample. The similarities of the two groups in age, gender and BMI also were considered.
Results: The serum leptin level median was 5.00 (interquartile range: 6.50) for major beta thalassemic patients and 6.10 (interquartile range: 7.00) for healthy individuals. Serum leptin level was significantly lower in thalassemic patients (P value <0.001). Major beta thalassemic men had significantly lower leptin level (median, interquartile range: 2.90, 3.60) than major beta thalassemic women (median, interquartile range: 6.45, 16.02; P value <0.001).
Conclusions: This study confirmed that the adipocytes of major beta thalassemic patients are unable to maintain adequate leptin production. These results suggest that adipose tissue dysfunction can be considered one of the endocrinopathies affecting major beta thalassemic patients.
Loukopoulos D. Thalassemia: Genotypes and Phenotypes. Ann Hematol, 1991; 62:145-150.
Lombardo T, Tamburino C, Bartolini G, et al. Cardiac Iron Overload in Thalassemic Patients: An Endomyocardial Biopsy udy. Ann Hematol, 1995; 71:135-141.
Low LC. Growth, Puberty and Endocrine Function in beta- Thalassaemia Major. J Pediatr Endocrinol Metabol, 1997; 10: 175-184.
De Sanctis V. Growth and Puberty and its Management in Thalassaemia. Hormone Res, 2002; 58 (Suppl 1):72-79.
Del Giudice ME, Perrotta S, Carbone MT, et al. Evaluation of Leptin Protein Levels in Patients with Cooley’s Anaemia. Bri J Haematol 1999; 105 :839-840.
Karachaliou F, Vlachopapadopoulou E, Theochari M, et al. Leptin Levels in Patients with Thalassemia Major. Minerva Pediatr, 2006; 58: 373-378.
Rosenbaum M, Nicolson M, Hirsch J, et al. Effects of Gender, Body Composition, and Menopause on Plasma Concentrations of Leptin. J Clin Endocrinol Metabol, 1996; 81: 3424-3477.
Falorni A, Bini V, Molinari D, et al. Leptin Serum Levels in Normal Weight and Obese Children and Adolescents: Relationship with Age, Sex, Pubertal Development, Body Mass Index and Insulin. Inter J Obesity Related Metabol Disord, 1997; 21:881-890.
Pelleymounter MA, Cullen MJ, Baker MB, et al. Effects of the Obese Gene Product on Body Weight Regulation in ob/ob mice. Science 1995; 269:540-543.
Gainsford T, Alexander WS. A Role for Leptin in Hemopoieses? Mol Biotechnol, 1999; 11:149-158.
Bennet BD, Solar GP, Yuan JQ, et al. A Rrole for Leptin and its Cognate Receptor in Hematopoiesis. Curr Biol, 1996; 6:1170-1180.
Saad MF, Damani S, Gingerich RL, et al. Sexual Dimorphism in Plasma Leptin Concentration. J Clin Endocrinol Metabol, 1997; 82:579-854.
Hickey MS, Israel RG, Gardiner SN, et al. Gender Differences in Serum Leptin Levels in Humans. Biochem Mol Med, 1996; 59:1-6.
El-Hazmi MA, Warsy AS, Al-Fawaz I. Iron-endocrine Pattern in Patients with beta-Thalassaemia; J Trop Pediati, 1994; 40 :219-224.
Youson JH, Sargent PA. Iron Deposition in the Integument of Lampreys. Anatom Record 1984;209:461-468.
Dedoussis GV, Kyrtsonis MC, Andrikopoulos NE, et al. Inverse Correlation of Plasma Leptin and Soluble Transferrin Receptor Levels in β-thalassemia Patients. Ann Hematol, 2002; 81: 543-547.
Suzuki K, Ito Y, Ochiai J, et al. JACC Study Group; Relationship between Obesity and Serum Markers of Oxidative Stress and Inflammation in Japanese. Asian Pacific J Cancer Prev, 2003;4:259-266.
Matkovic V, Ilich JZ, Skugor M, et al. Leptin is Inversely Related to Age at Menarche in Human Females. J Clin Endo Metab, 82:3239-3245, 1997.
Rejholcova M, Wilhelm J, Svoboda P. Lipid Peroxidation Inhibits Norepinephrine-stimulated Lipolysis in Rat Adipocytes. Reduction of beta-adreno-ceptor number. Biochem Biophysic Res Communications 1988; 150:802-810.
Files | ||
Issue | Vol 3, No 4 (2009) | |
Section | Articles | |
Keywords | ||
Major Beta Thalassemia Leptin BMI |
Rights and permissions | |
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |