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European Journal of General Medicine
Medical Investigations Society
ISSN: 1304-3897
Vol. 6, No. 1, 2009, pp. 28-37
Bioline Code: gm09007
Full paper language: English
Document type: Research Article
Document available free of charge

European Journal of General Medicine, Vol. 6, No. 1, 2009, pp. 28-37

 en Generalized Vascular Damage Including Glomerular Dysfunction in Newly-Detected Type 2 Diabetic Patients
Abo-Zenah, Hamdy; Moharram, M; Imran, A; Quazalbash, S & Al-Benayan, A

Abstract

Aim: Diabetes mellitus (DM) is considered a vascular disease, we intended to determine prevalence and nature of generalized and glomerular vascular abnormalities the moment it is diagnosed (ND-DM) in a cohort of patients with Arabic descent. Over 9 months, 216 out of 1208 asymptomatic Saudies were referred by the Primary Care Physicians on having risk factors for future development of DM for DM screening.
Methods: For the 54 ND-DM patients and 18 non-diabetic controls, clinical examination including body mass index (BMI) and waist:hip ratio (WHR), ultrasound determination of common carotid artery (CCA) intimal-medial thickness (IMT), hemoglobin A1c (A1c), total cholesterol (TC), triglycerides (TG), high-density lipoprotein cholesterol (HDL-C), CRP, albuminuria, serum creatinine (sCr), and glomerular filtration rate (eGFR) were done.
Results: About 4.5% were unaware of their diabetes and they had significant (35/54 vs 5/18 p=0.01) preclinical atherosclerosis (increased IMT and/or atheromatous plaques) with similar age, HDL-C, CRP and eGFR compared to controls. Also, they had pathologic microalbuminuria ([μA] 145.4±201.4 vs 18.9±7.1, p=0.013) with higher BMI (29.5±3.6 vs 27.2±1.8, p=0.043), WHR (0.94±0.12 vs 0.79±0.1, p=0.001), TC (5.1±0.9 vs 3.8±0.6, p=0.001) and TG (2.3±0.9 vs 1.2±0.4, p=0.001) compared to controls. Diabetic nephropathy (DN), as inferred from glomerular damage marker μA was significantly prevalent (17/54, p=0.014) in ND-DM patients. Those with DN had more IMT (0.96±0.1 vs 0.77±0.1, p=0.0001), WHR (0.98±0.1 vs 0.91±0.13, p=0.037), TC (5.4±0.7 vs 4.9±0.9, p=0.049) and TG (2.7±0.4 vs 2.02±0.4, p=0.012), lower eGFR (86.4±12 vs 104.1±13, p=0.0001), older age (40.9±5 vs 37.9±4, p=0.028) and worse glycamic control (A1c=8.1±1.6 vs 7.3±1.5, p=0.048). Also, diabetic retinopathy (DR) was significantly prevalent (n=19) in ND-DM patients (p=0.047). Interestingly, DN and DR, were significantly correlated with each other (r=0.841, p=0.0001) and with IMT (r=0.38, p=0.005 and r=0.35, p=0.009, respectively).
Conclusion: The newly-detected Saudi diabetics already had more vascular changes including glomerular damage than normal glucose-tolerant subjects with clustering of risk factors in particular abdominal obesity, and dyslipidaemia.

Keywords
Intimal-medial thickness, albuminuria, retinopathy, diabetes, Saudi Arabia

 
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