Abstract:
AIM:To investigate the therapeutic effects of recombinant human growth hormone (rhGH) on rat septic shock with intraabdominal infection by E. coli and its possible mechanism. METHODS:76 SD rats were divided into 3 groups randomly: control group (group C, n=16) without any special treatment, septic shock group (group S, n=30) received bolus injection of E.coli (1X10(10) cfu x L(-1), 15 ml x kg(-1), ip), treated group (group T, n=30) received bolus injection of E.coli, and then followed by rhGH injection (2.25 U x k g(-1) x d(-1), im). Group S and group T were further divided into 1d and 3d subgroups, respectively (n=15 each). Mean arterial pressure (MAP), levels of plasma TNFalpha and endotoxin and leukocyte count were determined on 1st day and 3rd day after E.coli injection. Another 39 SD rats were divided into groups C, S and T (n=13 each) just for observing survival rate within 1 week. RESULTS:(1) On 1st and 3rd day, MAP in group S decreased markedly, and MAP on 1st day lowered more than that of 3rd day (P<0.01), while MAP in group T just decreased slightly. The survival rate within 1 week was much higher in group T (84.6 %) than in group S (46.2 %) (P<0.01). (2)On 1st day, plasma TNFalpha and endotoxin elevated significantly in group S and group T (P<0.05), and endotoxin in group S had more increase (P<0.01). On 3rd day, TNFagr in group S returned to the level of group C (P>0.05),while TNFagr in group T went down below the level of group C(P<0.01). On 3rd day, endotoxin in group S declined, but was still higher than that of group C (P<0.01), endotoxin in group T returned to the level of group C (P>0.05). (3) On 1st day, neutrophil ratio in total leukocyte count in both group S and group T increased significantly (P<0.05 vs group C). CONCLUSION:rhGH showed beneficial effects on rat septic shock. The possible mechanisms may involve the attenuation of bacteria/endotoxin translocation and decreased systemic endotoxin level; inhibition of the production and release of TNFalpha; improved circulatory function; improved systemic host defenses and maintenance of intestinal mucosa barrier.
journal_name
World J Gastroenteroljournal_title
World journal of gastroenterologyauthors
Huang Y,Wang SR,Yi C,Ying MY,Lin Y,Zhi MHdoi
10.3748/wjg.v8.i6.1134keywords:
subject
Has Abstractpub_date
2002-12-01 00:00:00pages
1134-7issue
6eissn
1007-9327issn
2219-2840journal_volume
8pub_type
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