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The Association Between Different Monocyte Subsets and Coronary Collateral Development
Collateral growth and coronary angiogenesis are chronic adaptations to myocardial ischemia. Collateralization helps to restore blood flow and as a result salvages myocardium in severely ischemic myocardial regions. Thus, good collateral development in patients with severe coronary artery disease (CAD) improves ventricular function and prognosis (1-3).
However, coronary collateral development is different among patients even with similar degrees of coronary artery stenosis. Several factors, such as diabetes mellitus (4) and duration of myocardial ischemic symptoms (5) have been reported to effect coronary collateral development. At the cellular level, inflammatory cells, especially monocytes have an important role in collateralization. In a series of experimental studies with animals, it has been shown that monocytes are important elements for development of collateral vessels (6-7). In a recent study, it has been demonstrated that increased circulating monocyte count is related to good collateral development in patients with stable coronary artery disease (8).
Monocytes in human blood are heterogeneous and can be classified into two subsets according to the presence or absence of the FcγRIII receptor CD16 (9): CD14++CD16- monocytes characterized by high level expression of the CD14 cell surface receptor but no expression of CD16 receptor, and CD14+CD16+ monocytes characterized by the co-expression of CD16 receptor with either high or low level expression of the CD14 receptor. These subsets differ in function and response to several cytokines.
Our aim in this study was to find out any possible relationship between the levels of circulating monocyte subsets and coronary collateral development.
Studie Overzicht
Toestand
Conditie
Studietype
Inschrijving (Werkelijk)
Contacten en locaties
Studie Locaties
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Ankara, Kalkoen, 06550
- 1Türkiye Yüksek İhtisas Education and Research Hospital, Department of Cardiology
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Bemonsteringsmethode
Studie Bevolking
Beschrijving
Inclusion Criteria:
- > 95% stenosis of at least one major coronary artery in their first coronary angiogram
Exclusion Criteria:
- previous percutaneous or surgical revascularization history
- evidence of ongoing infection and inflammation
- known malignancy and chronic kidney disease (serum creatinine > 1.5 mg/dl
- diabetic patients
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
Cohorten en interventies
Groep / Cohort |
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Good-poor collateral
Patients who had good and poor collaterals formed 2 groups
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Good collateral, Poor collateral
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Medewerkers en onderzoekers
Sponsor
Studie record data
Bestudeer belangrijke data
Studie start
Primaire voltooiing (Werkelijk)
Studie voltooiing (Werkelijk)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Schatting)
Updates van studierecords
Laatste update geplaatst (Schatting)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- Monocyte subsets
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