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Real-Time Quantification of Reactive Oxygen Species in Neutrophils Infected with Meningitic Escherichia Coli
Published on: April 20, 2021
Oxidative stress in children with bacterial meningitis
Ragni Srivastava1, Rajeev Lohokare, Rajniti Prasad
1Department of Biochemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi-221005, Uttar Pradesh, India.
Insights
Oxidative stress is significant in pediatric bacterial meningitis. This study found increased oxidants and depleted antioxidants in affected children, suggesting a role in disease development.
Area of Science:
- Pediatric infectious diseases
- Neuroscience
- Biochemistry
Background:
- Bacterial meningitis is a major cause of illness and death in children.
- The role of oxidative stress in pediatric bacterial meningitis is not well understood.
Purpose of the Study:
- To investigate the levels of oxidants and antioxidants in children with bacterial meningitis.
- To determine the association between oxidative stress markers and the disease.
Main Methods:
- Studied 40 children diagnosed with bacterial meningitis.
- Measured serum and cerebrospinal fluid levels of malondialdehyde, protein carbonyl, nitrite, ascorbic acid, glutathione, and superoxide dismutase.
Main Results:
- Significantly elevated levels of malondialdehyde, protein carbonyl, and nitrite were observed in patients.
- Significantly decreased levels of ascorbic acid, glutathione, and superoxide dismutase were found in children with meningitis.
- These findings indicate increased oxidative stress and antioxidant depletion.
Conclusions:
- Elevated oxidant markers suggest increased reactive oxygen species production in bacterial meningitis.
- Depleted antioxidant markers indicate their utilization in combating the disease process.
- Oxidative stress likely plays a role in the pathogenesis of pediatric bacterial meningitis.
Abstract:
Bacterial meningitis is a common cause of morbidity and mortality in children. The oxidative stress in bacterial meningitis is barely determined. Forty children with bacterial meningitis were studied for their oxidants and antioxidants status in serum and cerebrospinal fluid. Fever (95%) was commonest presentation followed by seizure and vomiting. Neck rigidity and Kernig's sign were present in 37.5% and 27.5% cases, respectively. Plasma and cerebrospinal fluid malondialdehyde, protein carbonyl and nitrite levels were significantly raised in cases (p < 0.001). Plasma and cerebrospinal fluid ascorbic acid, glutathione and superoxide dismutase levels were significantly decreased in children with septic meningitis (p < 0.001). Significantly elevated malondialdehyde, nitrite and protein carbonyl levels reflect increased oxidative stress, whereas decreased concentrations of glutathione, ascorbic acid and superoxide dismutase indicates utilization of the antioxidants in septic meningitis. Thus, changes in oxidants and antioxidants observed suggest production of reactive oxygen species and their possible role in pathogenesis of septic meningitis.
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