Valenzuela-Garcia, Luis FelipeMatsuzawa, YasushiSara, Jaskanwal D SKwon, Taek-GeunLennon, Ryan JLerman, Lilach ORuiz-Salmeron, Rafael JLerman, Amir2015-10-092015-10-092015-08-14Valenzuela-Garcia LF, Matsuzawa Y, Sara JD, Kwon TG, Lennon RJ, Lerman LO, et al. Lack of correlation between the optimal glycaemic control and coronary micro vascular dysfunction in patients with diabetes mellitus: a cross sectional study. Cardiovasc Diabetol.2015; 14:106http://hdl.handle.net/10668/2011Background Coronary microvascular dysfunction (CMD) is associated with cardiovascular events in type 2 diabetes mellitus (T2DM). Optimal glycaemic control does not always preclude future events. We sought to assess the effect of the current target of HBA1c level on the coronary microcirculatory function and identify predictive factors for CMD in T2DM patients. Methods We studied 100 patients with T2DM and 214 patients without T2DM. All of them with a history of chest pain, non-obstructive angiograms and a direct assessment of coronary blood flow increase in response to adenosine and acetylcholine coronary infusion, for evaluation of endothelial independent and dependent CMD. Patients with T2DM were categorized as having optimal (HbA1c < 7 %) vs. suboptimal (HbA1c ≥ 7 %) glycaemic control at the time of catheterization. Results Baseline characteristics and coronary endothelial function parameters differed significantly between T2DM patients and control group. The prevalence of endothelial independent CMD (29.8 vs. 39.6 %, p = 0.40) and dependent CMD (61.7 vs. 62.2 %, p = 1.00) were similar in patients with optimal vs. suboptimal glycaemic control. Age (OR 1.10; CI 95 % 1.04–1.18; p < 0.001) and female gender (OR 3.87; CI 95 % 1.45–11.4; p < 0.01) were significantly associated with endothelial independent CMD whereas glomerular filtrate (OR 0.97; CI 95 % 0.95–0.99; p < 0.05) was significantly associated with endothelial dependent CMD. The optimal glycaemic control was not associated with endothelial independent (OR 0.60, CI 95 % 0.23–1.46; p 0.26) or dependent CMD (OR 0.99, CI 95 % 0.43–2.24; p = 0.98). Conclusions The current target of HBA1c level does not predict a better coronary microcirculatory function in T2DM patients. The appropriate strategy for prevention of CMD in T2DM patients remains to be addressed. Keywords: Endothelial dysfunction; Diabetes mellitus; Coronary microcirculationenEndothelial dysfunctionDiabetes mellitusCoronary microcirculationAcetilcolinaAdenosinaGlucosa sanguíneaDolor precordialhemoglobina A glicosiladaCateterismoMedical Subject Headings::Chemicals and Drugs::Organic Chemicals::Amines::Biogenic Amines::AcetylcholineMedical Subject Headings::Chemicals and Drugs::Heterocyclic Compounds::Heterocyclic Compounds, 2-Ring::Purines::Purine Nucleosides::AdenosineMedical Subject Headings::Chemicals and Drugs::Carbohydrates::Monosaccharides::Hexoses::Glucose::Blood GlucoseMedical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Therapeutics::CatheterizationMedical Subject Headings::Diseases::Pathological Conditions, Signs and Symptoms::Signs and Symptoms::Pain::Chest PainMedical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Epidemiologic Methods::Epidemiologic Research Design::Control GroupsMedical Subject Headings::Diseases::Nutritional and Metabolic Diseases::Metabolic Diseases::Glucose Metabolism Disorders::Diabetes Mellitus::Diabetes Mellitus, Type 2Medical Subject Headings::Check Tags::FemaleMedical Subject Headings::Chemicals and Drugs::Carbohydrates::Glycosides::Hemoglobin A, GlycosylatedMedical Subject Headings::Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Primates::Haplorhini::Catarrhini::Hominidae::HumansMedical Subject Headings::Phenomena and Processes::Circulatory and Respiratory Physiological Phenomena::Cardiovascular Physiological Phenomena::Cardiovascular Physiological Processes::Blood Circulation::MicrocirculationMedical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Epidemiologic Methods::Data Collection::Vital Statistics::Morbidity::Prevalenceresearch article26268857open access10.1186/s12933-015-0269-11475-2840PMC4535762