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Infectious Disorders - Drug Targets

Editor-in-Chief

ISSN (Print): 1871-5265
ISSN (Online): 2212-3989

Research Article

Searching the Staphylococcal Toxic Shock Syndrome Toxin -1 in Septic Children with negative Cultures: A Comparative Study in Tehran, Iran

Author(s): Samileh Noorbakhsh*, Ali Asghar Rabiei, Ali Akbar Rahbarimanesh, Morteza Haghighi and Sarvenaz Ashouri

Volume 21, Issue 2, 2021

Published on: 31 July, 2020

Page: [187 - 192] Pages: 6

DOI: 10.2174/1871526520666200731180641

Price: $65

Abstract

Background: Bacteria induced sepsis is common in infants and children. Staphylococcus aureus produces numerous exotoxins, like staphylococcal Toxic shock syndrome toxin (TSST- 1), which stimulate the immune system by T cell activation and inflammation in various organs. Recent studies suggest that staphylococcal toxins, generally named super antigens (SAgs), may also have a significant role in the pathogenesis of some pediatric disorders especially in the clinical presentation of sepsis and septic shock. This study was carried out in order to compare staphylococcal TSST- 1 (SAgs) in children with sepsis symptoms (and septic shock) with negative blood culture versus a control group.

Materials and Methods: This cross-sectional study was conducted during 2 years (2014 -2016) in two referral hospitals (Rasoul Akram and Bahrami hospitals) in Tehran, Iran. We selected 44 children) mean age of 4 years) who were admitted in pediatrics and PICUs wards with sepsis symptoms- /+septic shock. Forty-five children (mean age of 3.9 years) were selected as a control group. All cases with blood samples were examined for TSST-1 (SAgs) by polymerase chain reaction (PCR) method in both case and control groups and results were compared. Data were analyzed by SPSS-16software. Chi-square or Fisher test was used to compare the variables. P-value < 0.05 was considered as a valuable tool.

Results: Positive blood cultures with other bacteria, Streptococcus pneumonia, Haemophilus influenzae, Pseudomonas aeruginosa, Escherichia coli, were detected in 5 cases with negative TSST-1 in blood samples. S.aureus isolated from blood culture was detected in 2 cases with positive TSST- 1.Positive TSST-1 (SAgs) was detected in 6 cases (14%) with negative blood culture for S.aureus; it was significantly higher in cases (14% vs. 2%; P value = 0.05).

Conclusion: This study indicates the probable role of TSST-1(SAgs) in the progression of sepsis (and septic shock) in toxic children with negative blood culture for S.aureus. Anti-staphylococcal treatment is immediately required, especially in toxic children with related clinical presentations, even in cases with negative blood cultures. Indeed, the clinical use against SAgs suppressants of downstream cell-destructive events might be helpful.

Keywords: Staphylococcus aureus, super antigens (SAgs), TSST-1, PCR, sepsis, septic shock, children.

Graphical Abstract

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