Thrombin–antithrombin complex

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Thrombin–antithrombin complex (TAT) is a protein complex of thrombin and antithrombin.[1][2] It is a marker of net activation of coagulation.[3]

Formation and elimination

TAT is formed in response to the high thrombin level caused by coagulation following a ruptured vessel. Since thrombin is rapidly bound by antithrombin, TAT is a useful measure for thrombin level in the blood. Thrombin can pass the blood–brain barrier, destroying neurons and potentially causing cerebral edemas.[4]

The half-life of TAT is approximately 15 minutes.[5]

Disease

Cerebral hemorrhage

TAT levels were studied in patients with intracranial blood clot removal within 24 hours after intracerebral hemorrhage (ICH) in Fujian from 2006 to 2008. This study revealed that TAT levels in the plasma and hematoma fluid of these patients are higher than that those of healthy people, and that TAT levels decreased in the patients after surgery and increased in the patients that had a hemorrhage again. The TAT levels correlate with the severity of ICH according to GCS and NIHSS, and so, the study concluded that TAT complex may be useful in the prognosis for post-operative ICH-patients.[4]

Influences

TAT levels are increased with

parenteral estradiol therapy for prostate cancer.[9][10][11]

References

  1. PMID 20213258
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  2. PMID 17293122
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  3. ^
    PMID 17923128
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  4. ^
    PMID 21244583
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  5. PMID 10608009
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  6. PMID 12709915
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  7. PMID 33080636
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  8. doi:10.1017/9781108869102.023
    .
  9. PMID 16006886
    .
  10. ISSN 0732-183X
    .
  11. PMID 16284988
    .
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