Related Experiment Video
Updated: Jul 11, 2026

Modeling Intracerebral Hemorrhage in Mice: Injection of Autologous Blood or Bacterial Collagenase
Published on: September 22, 2012
Type II cryoglobulinemia and brain hemorrhage
Wei Hsi Chen1, Hung Sheng Lin, Yi-Fen Kao
1Department of Neurology, Stroke Biology Research Laboratory, Chang Gung Memorial Hospital, Ta Pei Road, Niao Sung Hsiang, Kaohsiung, Taiwan. e49130@ms14.hinet.net
Cryoglobulin can cause blood vessel issues and thrombosis. This case highlights its potential role in cerebellar hemorrhage, especially during cytomegalovirus reactivation in older adults.
Area of Science:
- Hematology
- Immunology
- Neurology
Background:
- Understanding serum proteins' roles in hemostasis and coagulopathy is advancing.
- Cryoglobulin is known to cause vasculitis and thrombosis in various vascular beds.
- The specific role of cryoglobulin in brain hemorrhage remains unclear.
Observation:
- A patient presented with cryoglobulinemia, hypocomplementemia, and cerebellar hemorrhage.
- This occurred during a cytomegalovirus (CMV) infection reactivation.
- Cryoglobulin is known to be detrimental to vessels and hemostasis.
Findings:
- Cryoglobulinemia was associated with cerebellar hemorrhage in this patient.
- Cytomegalovirus reactivation may trigger or exacerbate cryoglobulinemic complications.
- The patient experienced hypocomplementemia alongside cryoglobulinemia and hemorrhage.
Implications:
- The contribution of cryoglobulin to vascular syndromes, including hemorrhage, warrants further investigation.
- Clinicians should be aware of potential coagulopathies during latent viral reactivations, particularly in elderly patients.
- This case underscores the need to consider cryoglobulin's role in neurological bleeding events.
Related Concept Videos
Cerebral Edema ll: Pathophysiology
Hemorrhagic Stroke ll: Pathophysiology
Hemorrhagic Stroke l: Introduction
Bacterial Meningitis II: Pathophysiology
Encephalitis ll: Pathophysiology
Hypersensitivity Reactions: Cytolytic Reactions

