29 January 2009
Effects of dobutamine on gut mucosal nitric oxide production during endotoxic shock in rabbitsSuzana M. LoboACEF, Francisco G. SorianoDE, Denise F. BarbeiroD, Daniel De BackerDE, Qinghua SunB, Zizhi TuB, George DimopoulosB, Jean-Charles PreiserA, Bernard VrayAG, Vincent VercruysseB, Jean-Louis VincentAEG
Med Sci Monit 2009; 15(2): BR37-42 :: ID: 869546
Dobutamine is the agent of choice for increasing cardiac output during myocardial depression in humans with septic shock. Studies have shown that beta-adrenoceptor agonists influence nitric oxide generation, probably by modulating cyclic adenosine monophosphate. We investigated the effects of dobutamine on the systemic and luminal gut release of nitric oxide during endotoxic shock in rabbits.
Material and Method
Twenty anesthetized and ventilated New Zealand rabbits received placebo or intravenous lipopolysaccharide with or without dobutamine (5 micro g/kg/min). Ultrasonic flow probes placed around the superior mesenteric artery and the abdominal aorta continuously estimated the flow. A segment from the ileum was isolated and perfused, and serum nitrate/nitrite levels were measured in the perfusate solution and the serum every hour.
The mean arterial pressure decreased with statistical significance in the lipopolysaccharide group but not in the lipopolysaccharide/dobutamine group. The abdominal aortic flow decreased statistically significantly after lipopolysaccharide administration in both groups but recovered to baseline in the lipopolysaccharide/dobutamine group. The flow in the superior mesenteric artery was statistically significantly higher in the lipopolysaccharide/dobutamine group than in the lipopolysaccharide group at 2 hours. The serum nitrate/nitrite levels were higher in the lipopolysaccharide group and lower in the lipopolysaccharide/dobutamine group than those in the control group. The gut luminal perfusate serum nitrate/nitrite level was higher in the lipopolysaccharide group than in the lipopolysaccharide/dobutamine group.
Dobutamine can decrease total and intestinal nitric oxide production in vivo. Those effects seem to be inversely proportional to the changes in blood flow.
Keywords: Perfusion, Nitrites - blood, Rabbits, Nitric Oxide - biosynthesis, Nitrates - blood, Lipopolysaccharides - pharmacology, Intestinal Mucosa - metabolism, Lactic Acid - blood, Heart Rate - drug effects, Shock, Septic - physiopathology, Dobutamine - pharmacology, Coronary Circulation - drug effects
01 March 2023 : EditorialEditorial: Global Surveillance of Highly Pathogenic Avian Influenza Viruses in Poultry, Wild Birds, and Mammals to Prevent a Human Influenza Pandemic
Med Sci Monit 2023; 29:e939968
09 February 2023 : Clinical ResearchEvaluation of Health-Related Quality of Life and Mental Health in 729 Medical Students in Indonesia During ...
Med Sci Monit 2023; 29:e938892
19 January 2023 : Clinical ResearchDetermining the Impact of the COVID-19 Pandemic on Dental Care in the Serbian Adult Population: An Online Q...
Med Sci Monit 2023; 29:e939238
27 December 2022 : Clinical ResearchEffect of Physiotherapy to Correct Rounded Shoulder Posture in 30 Patients During the COVID-19 Pandemic in ...
Med Sci Monit 2022; 28:e938926
10 December 2022 : Clinical ResearchRetrospective Study to Identify Risk Factors for Severe Disease and Mortality Using the Modified Early Warn...
Med Sci Monit 2022; 28:e938647
24 Mar 2023 : Database AnalysisCauses of Death Following Gastric Cancer Diagnosis: A Population-Based Analysis
Med Sci Monit In Press; DOI: 10.12659/MSM.939848
22 Mar 2023 : Special reportOne Year On: Poland’s Public Health Initiatives and National Response to Millions of Refugees from Ukraine
Med Sci Monit In Press; DOI: 10.12659/MSM.940223
22 Mar 2023 : Clinical ResearchValue of IL-1β and IL-23 in Predicting 28-Day Mortality Due to Sepsis: A Retrospective Study
Med Sci Monit In Press; DOI: 10.12659/MSM.940163
21 Mar 2023 : Clinical ResearchEfficacy of Direct Anterior Approach Versus Posterior Lateral Approach for Total Hip Replacement in Patient...
Med Sci Monit In Press; DOI: 10.12659/MSM.939682
Most Viewed Current Articles
13 Nov 2021 : Clinical ResearchAcceptance of COVID-19 Vaccination and Its Associated Factors Among Cancer Patients Attending the Oncology ...
Med Sci Monit 2021; 27:e932788
30 Dec 2021 : Clinical ResearchRetrospective Study of Outcomes and Hospitalization Rates of Patients in Italy with a Confirmed Diagnosis o...
Med Sci Monit 2021; 27:e935379
08 Mar 2022 : Review articleA Review of the Potential Roles of Antioxidant and Anti-Inflammatory Pharmacological Approaches for the Man...
Med Sci Monit 2022; 28:e936292
01 Jan 2022 : EditorialEditorial: Current Status of Oral Antiviral Drug Treatments for SARS-CoV-2 Infection in Non-Hospitalized Pa...
Med Sci Monit 2022; 28:e935952