RGD Reference Report - Association between increased platelet P-selectin expression and obesity in patients with type 2 diabetes: a BARI 2D (Bypass Angioplasty Revascularization Investigation 2 Diabetes) substudy.

General

Association between increased platelet P-selectin expression and obesity in patients with type 2 diabetes: a BARI 2D (Bypass Angioplasty Revascularization Investigation 2 Diabetes) substudy.
Authors:	Schneider, DJ Hardison, RM Lopes, N Sobel, BE Brooks, MM Brooks, Maria Mori
Citation:	Schneider DJ, etal., Diabetes Care. 2009 May;32(5):944-9. Epub 2009 Feb 19.
RGD ID:	2312291
Pubmed:	PMID:19228864 (View Abstract at PubMed)
PMCID:	PMC2671133 (View Article at PubMed Central)
DOI:	DOI:10.2337/dc08-1308 (Journal Full-text)
OBJECTIVE: To determine whether obesity increases platelet reactivity and thrombin activity in patients with type 2 diabetes plus stable coronary artery disease. RESEARCH DESIGN AND METHODS: We assessed platelet reactivity and markers of thrombin generation and activity in 193 patients from nine clinical sites of the Bypass Angioplasty Revascularization Investigation 2 Diabetes (BARI 2D). Blood taken at the time of enrollment was used for assay of the concentration of prothrombin fragment 1.2 (PT1.2, released when prothrombin is activated) and fibrinopeptide A (FPA, released when fibrinogen is cleaved). Platelet activation was identified with the use of flow cytometry in response to 0, 0.2, and 1 micromol/l adenosine diphosphate (ADP). RESULTS: Concentrations of FPA, PT1.2, and platelet activation in the absence of agonist were low. Greater BMI was associated with higher platelet reactivity in response to 1 microm ADP as assessed by surface expression of P-selectin (r = 0.29, P < 0.0001) but not reflected by the binding of fibrinogen to activated glycoprotein IIb-IIIa. BMI was not associated with concentrations of FPA or PT1.2. Platelet reactivity correlated negatively with A1C (P < 0.04), was not related to the concentration of triglycerides in blood, and did not correlate with the concentration of C-reactive peptide. CONCLUSIONS Among patients enrolled in this substudy of BARI 2D, a greater BMI was associated with higher platelet reactivity at the time of enrollment. Our results suggest that obesity and insulin resistance that accompanies obesity may influence platelet reactivity in patients with type 2 diabetes.

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Term	Qualifier	Evidence	With	Reference	Notes	Source	Original Reference(s)
obesity		IEP		2312291	associated with Diabetes Mellitus more ...	RGD
obesity		ISO	SELP (Homo sapiens)	2312291; 2312291	associated with Diabetes Mellitus more ...	RGD

Objects Annotated

Genes (Rattus norvegicus)

Selp (selectin P)

Genes (Mus musculus)

Selp (selectin, platelet)

Genes (Homo sapiens)

SELP (selectin P)

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Association between increased platelet P-selectin expression and obesity in patients with type 2 diabetes: a BARI 2D (Bypass Angioplasty Revascularization Investigation 2 Diabetes) substudy.