Abstract:
OBJECTIVE:To determine the rheological properties of polymorphonuclear leukocytes (PMN) from non-insulin-dependent diabetes mellitus (NIDDM) patients. RESEARCH DESIGN AND METHODS:The deformability of PMN from 33 NIDDM subjects, 13 with impaired glucose tolerance (IGT), and 22 with normal glucose tolerance (NGT) was studied. A Cell Transit Analyzer that measures the transit time of PMN through 8-microns pores was used. Studies were performed under three different conditions: 1) basal state; 2) after incubation with cytochalasin B (20 microM) to dissociate f-actin from the cytoskeleton; and 3) following activation with N-formyl-methionyl-leucyl-phenylalanine (fMLP, 1 nM). RESULTS:PMN from diabetic patients were more rigid (i.e., had longer transit time) than those from subjects with NGT or IGT under basal conditions and after cytochalasin B, but not after stimulation with fMLP. The deformability of PMN from subjects with IGT was similar to those of the NGT group. In the pooled data, basal transit time correlated with age; systolic and diastolic blood pressure; HbA1c; and serum creatinine, cholesterol, and triglyceride concentrations (r = 0.29, 0.34, 0.37, 0.48, 0.25, 0.36, 0.29, respectively, P < 0.05 for each). Hypertensive diabetic patients had less deformable PMN than normotensive ones. No relation was found between PMN deformability and the duration of diabetes, type of treatment, or the presence of retinopathy. CONCLUSIONS:These data indicate increased rigidity of PMN in NIDDM that may contribute to development of microcirculatory disturbances and microangiopathy.
journal_name
Diabetes Carejournal_title
Diabetes careauthors
Pécsvarády Z,Fisher TC,Darwin CH,Fabók A,Maqueda TS,Saad MF,Meiselman HJdoi
10.2337/diacare.17.1.57subject
Has Abstractpub_date
1994-01-01 00:00:00pages
57-63issue
1eissn
0149-5992issn
1935-5548journal_volume
17pub_type
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