Affiliations: [a] Emergency Medicine Clinical Research Center, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| [b] Department of Neurology, Beijing First Hospital of Integrated Chinese and Western Medicine, Beijing, China
| [c] Department of Critical Care Medicine, Peking University Third Hospital, Beijing, China
| [d] Department of Emergency Medicine, Beijing Jishuitan Hospital, Beijing, China
| [e] Department of Emergency Medicine, Beijing Luhe Hospital, Capital Medical University, Beijing, China
Correspondence:
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Corresponding author: Chunsheng Li, Emergency Medicine Clinical Research Center, Beijing Chaoyang Hospital, Capital Medical University. Beijing, China. Tel.: +86 10 85231051; Fax: +86 10 85231051; E-mail: [email protected].
Abstract: BACKGROUND:Shenfu injection (SFI) is a traditional Chinese herbal medicine which has been clinically used for treatment of septic shock and cardiac shock. The aim of this study was to clarify effects of SFI on cerebral microcirculation and brain injury after hemorrhagic shock (HS). METHODS:Twenty-one domestic male Beijing Landrace pigs were randomly divided into three groups: SFI group (SFI, n = 8), saline group (SA, n = 8) or sham operation group (SO, n = 5). In the SFI group, animals were induced to HS by rapid bleeding to a mean arterial pressure of 40 mmHg within 10 minutes and maintained at 40±3 mmHg for 60 minutes. Volume resuscitation (shed blood and crystalloid) and SFI were given after 1 hour of HS. In the SA group, animals received the same dose of saline instead of SFI. In the SO group, the same surgical procedure was performed but without inducing HS and volume resuscitation. The cerebral microvascular flow index (MFI), nitric oxide synthase (NOS) expression, aquaporin-4 expression, interleukin-6, tumor necrosis factor-α (TNF-α) and ultrastructural of microvascular endothelia were measured. RESULTS:Compared with the SA group, SFI significantly improved cerebral MFI after HS. SFI up regulated cerebral endothelial NOS expression, but down regulated interleukin-6, TNF-α, inducible NOS and aquaporin-4 expression compared with the SA group. The cerebral microvascular endothelial injury and interstitial edema in the SFI group were lighter than those in the SA group. CONCLUSIONS:Combined application of SFI with volume resuscitation after HS can improve cerebral microcirculation and reduce brain injury.
