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  • Meeting abstract
  • Open Access

S100: a potential marker of cerebral trauma

  • 1 and
  • 1
Critical Care20003 (Suppl 1) :P224

https://doi.org/10.1186/cc597

  • Published:

Keywords

  • Head Injury
  • Calcium Binding
  • Calcium Binding Protein
  • S100 Level
  • Severe Head Injury

Introduction

Head injuries are associated with a high level of morbidity and mortality. The aim of this study was to examine if S100, a calcium binding protein localised in astroglial cells of the central nervous system, can be used as a marker of head injury and to predict survival outcomes from severe head injury.

Methods

After informed consent and local ethics approval, 12 severe head injured patients (GCS ≤ 8) were included. All patients were treated according to standardised head injury protocols. Serial serum samples were taken over a period of 48 h together with various other physiologic measurements. Plasma concentrations of S100 were analysed using a radioimmunometric assay - Sangtec® S100 IMRA.

Results

The mean S100 in patients who survived was 1.1 μg/l and in those who died 0.79 μg/l. Six of the 12 patients in the study died.

Conclusion

Plasma S100 concentrations increase in severe head injuries. The reference value is less than 0.2 μg/l and this was exceeded in both patients who survived and those who died. Serum S100 levels could not be correlated with mortality.

Serum S100 (μ g/l) after severe head injury

Time after admission (h)

0

2

6

12

24

48

72

S100 (μ g/l)

Mean

0.417

0.5

1.25

1.06

2.49

0.7

0.35

 

Std deviation

0.59

0.74

2.68

1.72

6.54

1.16

0.64

 

No. of patients

12

12

12

12

12

12

6

Authors’ Affiliations

(1)
Academic Unit of Anaesthesia, The General Infirmary at Leeds, Gnat George Street, Leeds, LS1 3EX, UK

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