Early treatment with ACTH-(1-24) in a rat model of hemorrhagic shock prolongs survival and extends the time-limit for blood reinfusion to be effective.

Abstract:

:The ability of ACTH-(1-24) to prolong survival and to extend the deadline for effective blood reinfusion has been studied in a model of lethal hypovolemic shock in the rat. Anesthetized rats were bled to a mean arterial pressure of 18 to 25 mm Hg and then subjected to one of the following iv treatments: a) saline; b) ACTH-(1-24), 160 micrograms/kg; c) blood reinfusion; d) ACTH-(1-24), 160 micrograms/kg; c) blood reinfusion; d) ACTH-(1-24), with saline 5 min after bleeding died within 0.05 h. On the other hand, the treatment with ACTH-(1-24) induced an almost complete and sustained recovery of cardiovascular and respiratory functions associated with a survival time of 44 +/- 18 h, while four of six rats reinfused with the withdrawn blood were still alive 15 days later. The time-lapse between bleeding and treatment was of crucial importance, and neither ACTH-(1-24) injection nor blood reinfusion had any effect if performed 25 min after bleeding. However, treatment with ACTH-(1-24) shortly after bleeding (5 min) greatly improved the effect of a later blood reinfusion. These data indicate that ACTH-(1-24) can prolong survival and permit the time-lapse between blood loss and blood reinfusion to be extended.

journal_name

Crit Care Med

journal_title

Critical care medicine

authors

Guarini S,Tagliavini S,Bazzani C,Ferrari W,Bertolini A

doi

10.1097/00003246-199008000-00014

subject

Has Abstract

pub_date

1990-08-01 00:00:00

pages

862-5

issue

8

eissn

0090-3493

issn

1530-0293

journal_volume

18

pub_type

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