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Gene Expression Pattern Could Lead To Improved Treatment Of Pediatric Septic Shock

Date:
July 27, 2007
Source:
Cincinnati Children's Hospital Medical Center
Summary:
Scientists have discovered a gene expression pattern that could lead to improved diagnosis and treatment of pediatric septic shock -- still a serious public health problem despite today's potent antibiotics and pediatric intensive care units.

A consortium of researchers headed by Cincinnati Children's Hospital Medical Center has discovered a gene expression pattern that could lead to improved diagnosis and treatment of pediatric septic shock -- still a serious public health problem despite today's potent antibiotics and pediatric intensive care units.

Consistent with Cincinnati Children's increased emphasis on personalized and predictive medicine -- where diagnosis and treatment coincide with a person's genetic predisposition -- the study involves the largest gene expression analysis to date of blood samples from children with septic shock. It found new evidence linking adverse clinical outcomes with the decreased expression of genes that encode proteins involved in zinc regulation. This unexpected finding suggests these proteins and zinc regulation could provide a target for therapeutic intervention to inhibit septic shock's progression to multiple organ failure.

"Zinc was not even on our radar screen for this disease process," said Dr. Hector Wong, M.D., professor of Pediatrics and director of Critical Care Medicine at Cincinnati Children's. "This study demonstrates the potential power of genomic medicine for discovery and the generation of novel hypotheses. We are ultimately interested in determining whether or not there are biologically significant gene expression profiles that distinguish survivors from non-survivors. The rationale is to discover novel biomarkers of poor outcome and novel therapeutic targets as means for developing more effective treatment strategies."

The study -- published in the July issue of Physiological Genomics -- and consortium were led by Dr. Wong. The paper describes how comparative gene expression analysis of blood samples from children identified 63 genes expressed differently in patients with septic shock. This includes two forms of metallothionein where higher levels of metallothionein and lower levels of zinc were associated with increased chance of death. A total of 57 children participated in the study, which used individual micro-array chips to analyze samples from 15 control patients without septic shock and 42 patients with septic shock, including nine fatal cases.

Researchers at Cincinnati Children's continue to investigate the potential for analyzing zinc levels as way to understand the biology of septic shock and allow for more effective therapeutic intervention. This includes the possibility of using zinc supplementation as a form of treatment.


Story Source:

The above story is based on materials provided by Cincinnati Children's Hospital Medical Center. Note: Materials may be edited for content and length.


Cite This Page:

Cincinnati Children's Hospital Medical Center. "Gene Expression Pattern Could Lead To Improved Treatment Of Pediatric Septic Shock." ScienceDaily. ScienceDaily, 27 July 2007. <www.sciencedaily.com/releases/2007/07/070726113255.htm>.
Cincinnati Children's Hospital Medical Center. (2007, July 27). Gene Expression Pattern Could Lead To Improved Treatment Of Pediatric Septic Shock. ScienceDaily. Retrieved October 21, 2014 from www.sciencedaily.com/releases/2007/07/070726113255.htm
Cincinnati Children's Hospital Medical Center. "Gene Expression Pattern Could Lead To Improved Treatment Of Pediatric Septic Shock." ScienceDaily. www.sciencedaily.com/releases/2007/07/070726113255.htm (accessed October 21, 2014).

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