[Clinical analysis of 286 cases of abdominal trauma with gastrointestinal tract laceration].

Objective: To improve the diagnosis and treatment of abdominal injury.

Methods: The clinical data of 286 patients with gastrointestinal tract laceration admitted between 2004 and 2009 to our hospital was analyzed.

Results: The duration after trauma was 15 min to 2 days.

[Changes in cyclooxygenase gene expression during spontaneous recovery from stress ulcer in rats].

Objective: To observe the changes in gene expression of cyclooxygenase (COX) during spontaneous recovery from stress ulcer in rats exposed to water immersion and restraint stress (WRS).

Methods: A rat model of stress ulcer was established by means of WRS, in which the changes in COX expression were detected with immunohistochemistry and reverse transcription (RT)-PCR.

Results: Very low levels of COX-2 expression were detected in the gastric mucosa of the control rats, and the expression increased significantly during the healing process of the stress ulcer (P<0.