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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Polymorphonuclear leukocyte: rheology, metabolism and integrin pattern in vascular atherosclerotic disease and in type 2 diabetes mellitus.

Leukocytes, and in particular polymorphonuclear cells (PMN), play a role in the organ injury that characterizes the progression of vascular atherosclerotic disease (VAD) and diabetes mellitus (DM). We enrolled subjects with VAD, subjects with type 2 DM ( DM2) and subjects with VAD and DM2. We evaluated the initial relative flow rate (IRFR) of PMN, using the St.George Filtrometer, the PMN membrane fluidity, labelling intact PMN cells with the fluorescent probe 1.4-(trimethylamino)-phenyl-4-phenylhexatriene (TMA-DPH), the PMN cytosolic Ca2+ content marking the cells with the fluorescent probe Fura 2-AM and the PMN integrin profile using the flow cytofluorimetry. All these evaluations were effected at baseline and after activation with 4-phorbol-12-myristate-13-acetate (PMA). At baseline and after activation the IRFR did not distinguish normal subjects from any group of patients. The PMN membrane fluidity at baseline differentiated only normal from DM2 subjects, while after activation no significant variation of this parameter was observed in normal, VAD, DM2 and VAD-DM2 subjects. The PMN cytosolic Ca2+ content, at baseline, discriminated only normal from VAD subjects with DM2, while after activation a significant increase of this parameter was evident in DM2 subjects and in VAD subjects with DM2. Regarding the PMN integrin pattern we observed, at baseline and after activation, a complex and non-univocal behaviour. In conclusion, the PMN rheological and metabolic pattern found in these groups of patients showed only small functional alterations while the integrin pattern was significantly different from that of normal subjects and added specific elements which may have potential therapeutical implications.[1]

References

  1. Polymorphonuclear leukocyte: rheology, metabolism and integrin pattern in vascular atherosclerotic disease and in type 2 diabetes mellitus. Caimi, G., Lo Presti, R., Montana, M., Carollo, C., Amodeo, G., Romano, A., Canino, B. Clin. Hemorheol. Microcirc. (2004) [Pubmed]
 
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