Related Experiment Video
Updated: Jul 13, 2026

Live-cell Imaging of Platelet Degranulation and Secretion Under Flow
Published on: July 10, 2017
[Vessel-platelet and coagulation components of hemostasis in patients with chronic tubulointerstitial nephritis]
Insights
Chronic tubulointerstitial nephritis (CTIN) involves significant activation of the hemostasis system, including platelet hyperaggregation and hypercoagulation. These hemostatic changes correlate with disease activity, aiding in its assessment.
Area of Science:
- Nephrology
- Hematology
- Pathophysiology
Context:
- Chronic tubulointerstitial nephritis (CTIN) is a kidney disease with complex pathophysiology.
- The role of the hemostasis system in CTIN progression and activity requires further elucidation.
Purpose:
- To investigate the vessel-platelet and coagulation components of the hemostasis system in patients with CTIN.
- To determine the correlation between hemostatic markers and clinical characteristics, including disease activity, blood pressure, renal function, and duration of CTIN.
Summary:
- Patients with CTIN exhibit activated vessel-platelet hemostasis, evidenced by decreased platelet counts, persistent platelet hyperaggregation, and elevated levels of Willebrand factor.
- Coagulation changes include accelerated activated partial thromboplastin time, background thrombinemia indicated by soluble fibrin-monomeric complexes (SFMC), and hypercoagulation.
- These findings suggest a latent course of renal intravascular blood coagulation in CTIN.
Impact:
- The study highlights that hemostasis system activation is a key feature of CTIN.
- Assessing hemostatic markers can provide valuable insights into the activity and progression of chronic tubulointerstitial nephritis.
Aim:
To study vessel-platelet and coagulation parts of hemostasis system, their correlation with clinical characteristics and activity of chronic tubulointerstitial nephritis (CTIN).
Material And Methods:
128 patients 15 to 65 years of age with CTIN were included in the study. The diagnosis was confirmed morphologically in 42 patients. The patients were divided into subgroups by activity of the disease at the moment of examination (active and inactive CTIN), by arterial pressure (normotensive and hypertensive patients), intact and low renal function, by duration of the disease (up to 60 months, 61-120 months, more than 120 months). Complex study of hemostasis system was carried out by a set of standard techniques.
Results:
CTIN runs with activation of vessel-platelet hemostasis characterised by a decrease in platelets count (p < 0.001), persistent platelet hyperaggregation and activation (p < 0.001). Severity of platelet aggregative activity is related with endothelial affection manifesting with high level and activity of Willebrand factor (p < 0.001). The most typical changes of coagulation in CTIN were acceleration of activated partial thrombin time (p < 0.001) closely related with activation of thrombocytic hemostasis and background thrombinemia the presence of which was confirmed by elevated blood level of soluble fibrin-monomeric complexes (SFMC).
The Conclusion:
Hypercoagulation, suppression of fibrinolytic plasma activity, increase of SFMC and fibrinogen levels in the blood as well as detected enhancement of platelet aggregation testify to a latent course of renal intravascular blood coagulation in CTIN. Hemostasis system activation in CTIN helps assessment of the disease activity.
Related Concept Videos
Formation of the Platelet Plug
As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...
Introduction to Hemostasis
The three phases of hemostasis involve many clotting factors present in plasma and several substances released by platelets and injured tissue cells. It is a fast, localized, and...
Anticoagulant Drugs: Low-Molecular-Weight Heparins
Structure and Function of Platelets
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000 platelets, with...
Clot Retraction and Fibrinolysis
Extrinsic and Intrinsic Pathways of Hemostasis
The Extrinsic Pathway
The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which forms a...
