Abstract
Metabolic syndrome is increasingly recognised as emerging threats to health of human race. Thyroid hormones up regulate metabolic pathways relevant to resting energy expenditure. Obesity causes alteration in thyroid function tests. We compared the thyroid profiles of individuals with and without Metabolic Syndrome and assessed the possibility of obesity influencing the results. This is a cross sectional study which includes 200 patients above the age of 18 years attending the outpatient department of our institution from January 2015 to August 2016. They were divided into four groups where group 1 consists of patients with Metabolic syndrome and obesity, group 2 with Metabolic Syndrome without obesity, group 3 without Metabolic syndrome but obese and group 4 without Metabolic syndrome and non obese. The NCEP ATP III criteria was used for assessing Metabolic syndrome and revised consensus guidelines for Asian Indians was chosen to determine the Body Mass Index (BMI) for obesity. TSH, T4, T3 were measured as indicators of thyroid function. The difference in mean TSH levels between individuals with Metabolic Syndrome (3.84 ± 2.44uIU/L) and without Metabolic Syndrome (2.10±1.70uIU/L) was statistically significant (p = £ 0.05) while the mean T4 and T3 levels were comparable. Amongst individuals with metabolic syndrome ,difference of mean TSH between obese and non-obese group was not significant (p=0.984). Individuals with Metabolic syndrome have a higher TSH level but normal T3 and T4 levels. This rise in TSH is independent of obesity.
Keywords: Metabolic syndrome, Thyroid profile.
References
- Reaven GM: Banting lecture 1988. Role of Insulin Resistance in Human Disease. Diabetes 1988 Dec; 37(12):1595-1607.
- Meigs JB, Wilson PWF, Nathan DM , D’Agostino RB Sr, Williams K, Haffner SM . Prevalence and Characteristics of the Metabolic Syndrome in the San Antonio Heart and Framingham Offspring Studies. Diabetes 2003 Aug ; 52(8) : 2160-67.
- Bonora E, Kiechl S, Willeit J, Oberhollenzer F, Egger G , Bonadonna RC, Muggeo M Metabolic syndrome: epidemiology and more extensive phenotypic Cross-sectional data from the Bruneck Study. Int J Obes Relat Metab Disord 2003 Oct; 27(10): 1283-89.
- Salaroli LB, Barbosa GC, Mill JG , Molina MCB . Prevalence of metabolic syndrome in population-based study, Vitória, ES-Brazil. Arq Bras Endocrinol Metab 2007 Oct ; 51 (7): 1143-52.
- Ramachandran A, Snehalatha C, Satyavani K, Sivasankari S , Vijay V. Metabolic syndrome in urban Asian Indian adults -- A population study using modified ATP III criteria . Diabetes Res Clin Pract 2003; 60 (3):199- 204.
- Mohan V, Shanthirani S , Deepa R , Premalatha G, Sastry NG, Saroja R . Intra-urban differences in the prevalence of the metabolic syndrome in southern India – The Chennai Urban Population Study (CUPS No.4) .Diabet Med 2001 ;18(4):280-87.
- Gupta R, Deedwania PC, Gupta A, Rastogi S, Panwar RB, Kothari K: Prevalence of metabolic syndrome in an Indian urban population. Int J Cardiol 2004, 97(2):257-61.
- Luboshitzky R, Aviv A, Herer P, Lavie L (2002) Risk factors for cardiovascular disease in women with subclinical hypothyroidism. Thyroid 2002 ; 12(5): 421-25.
- Knudsen N, Laurberg P, Rasmussen LB, Bülow I, Perrild H, Ovesen L, Jørgensen T Small Differences in Thyroid Function May Be Important for Body Mass Index and the Occurrence of Obesity in the Population. J Clin Endocrinol Metab 2005 July 1 ; 90(7): 4019-24
- Executive Summary of the Third Report of the National Cholesterol Education Program (NCEP) Expert Panel on Detection, Evaluation and Treatment of High Blood Cholesterol in Adults (Adult Treatment Panel III). JAMA 2001; 285(19):2486-97.
- Mishra A, Chowbey P, Makkar BM, Vikram NK,Wasir JS, Chadha D,Joshi S R,Sadikot S, Gupta R, Gulati S, Munjal YP. Consensus Statement for Diagnosis of Obesity, Abdominal Obesity and the Metabolic Syndrome for Asian Indians and Recommendations for Physical Activity, Medical and Surgical Management. J Assoc Physicians India. 2009 Feb ; 57 : 163-7.
- Stichel H, I’Allemand D, Gruters A. Thyroid Function and Obesity in Children and Adolescents. Horm Res 2000;54 (1):14-19.
- Kiortsis DN, Durack I, Turpin G. Effects of a low-calorie diet on resting metabolic rate and serum tri-iodothyronine levels in obese children. Eur J Pediatr 1999 May ; 158(6):446-50
- Ruhla S , Weickert MO , Arafat AM, Osterhoff M, Isken F, Spranger J, Schofl C, Pfeiffer AFH, Mohlig M, A high normal TSH is associated with the metabolic syndrome. Clin Endocrinol (oxf) 2010 March 25 ;72(5):696-701
- Lee YK , Kim JE, Oh HJ,Park KS, Kim SK,Park SW, Kim MJ,Cho YW . Serum TSH level in Healthy Koreans and the Association of TSH with Serum Lipid Concentration and Metabolic Syndrome. Korean J Intern Med 2011 Dec;26(4):432-9
- Bastemir M , Akin F , Alkis E , Kaptanoglu B . Obesity is associated with increased serum TSH level, independent of thyroid function. Swiss Med Wkly 2007; 137(29-30): 431-4.
- Liu Y Y , Schultz J J, Brent G A. A Thyroid Hormone Receptor alpha gene mutation (P398H) Is Associated with Visceral Adiposity and Impaired Catecholamine stimulated Lipolysis in Mice. J Biol Chem 2003; 278 (40):38913-20.
- Burman K D , Latham K R , Djuh Y-Y , Smallridge R C , Tseng Y-C L , Lukes Y G, Maunder R, Wartofsky L . Solubilized Nuclear Thyroid Hormone Receptors in Circulating Human Mononuclear Cell. J Clin Endocrinol Metab 1980 ; 51(1) : 106-16.
- Escobar-Morreale H F Obregon M J , Escobar del Ray F , Morreale de Escobar G. Replacement therapy for hypothyroidism with thyroxine alone does not ensure euthyroidism in all tissues, as studied in thyroidectomised rats. J Clin Invest 1995 ; 96(6):2828-38.
- Maratou E, Hadjidakis DJ, Kollias A et al. Studies of insulin resistance in patients with clinical and subclinical hypothyroidism. Eur J Endocrinol 2009;160(5):785-90.
- Dardano A, Ghiadoni L, Plantinga Y, Caraccio N, Bemi A, Duranti E, Taddei S, Ferrannini E, Salvetti A , Monzani F . Recombinant Human Thyrotropin Reduces Endothelium- Dependent Vasodilation in Patients Monitored for ifferentiated Thyroid Carcinoma. J Clin Endocrinol Metab 1 October 2006 ; 91(10): 4175-78.
- Antunes TT, Gagnon A, Chen B, Pacini F, Smith TJ, Sorisky A . Interleukin-6 release from human abdominal adipose cells is regulated by thyroid stimulating hormone: effect of adipocyte differentiation and anatomic depot. Am J Physiol Endocinol Metab 2006 JUN 01;290 (6) :E1140-4.
Corresponding Author
Dr Amit Sarkar
Burdwan Medical College and Hospital, P.O. Burdwan, Pin – 713104, District – East Burdwan, West Bengal, India