Phosphatidylserine expressing microvesicles in relation to microvascular complications in type 1 diabetes

Karin Bergen1, Fariborz Mobarrez2, Gun Jörneskog3

  • 1Karolinska Institutet, Department of Clinical Sciences, Danderyd University Hospital, Division of Nephrology, Stockholm, Sweden.

Thrombosis Research
|November 18, 2018
PubMed
Abstract

Insights

Patients with type 1 diabetes show increased microvesicles (MVs) and lactadherin, a clearance glycoprotein. While MVs are elevated, lactadherin levels correlate with microangiopathy, suggesting its role in vascular complications.

Area of Science:

  • Endocrinology
  • Vascular Biology
  • Hematology

Background:

  • Type 1 diabetes is a prothrombotic condition associated with vascular complications.
  • The specific role of microvesicles (MVs) in type 1 diabetes-related microangiopathy is not fully understood.

Purpose of the Study:

  • To investigate microvesicle (MV) levels and their association with microangiopathy in type 1 diabetes.
  • To explore the role of lactadherin in type 1 diabetes and its potential link to microangiopathy.

Main Methods:

  • Flow cytometry was used to analyze MV levels in plasma from type 1 diabetes patients and healthy controls.
  • Phosphatidylserine (PS) expression on MVs and their thrombin generation capacity were assessed.
  • ELISA was employed to measure endogenous plasma lactadherin levels.

Main Results:

  • Patients with type 1 diabetes exhibited higher circulating MV levels than controls, irrespective of microangiopathy status.
  • MV-induced thrombin generation was inhibited by lactadherin.
  • Plasma lactadherin levels were elevated in type 1 diabetes patients, particularly those with microangiopathy, but did not correlate with PS-positive MVs.

Conclusions:

  • Elevated MV levels in type 1 diabetes suggest increased cellular activation, but do not directly correlate with clinical microangiopathy.
  • Increased plasma lactadherin levels in type 1 diabetes patients correlate with microangiopathy, indicating its potential involvement in the condition's vascular complications.

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