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A Tuberculosis Molecular Bacterial Load Assay TB-MBLA
Published on: April 30, 2020
Cerebrospinal fluid analysis in tuberculous meningitis: A literature review
Akhmad Imron1, Yulius Hermanto1, Ahmad Rizal2
1Department of Neurosurgery, Padjadjaran University/Hasan Sadikin General Hospital, Bandung, West Java, Indonesia.
Background:
Tuberculous meningitis (TBM) is the most common central nervous system infection of Mycobacterium tuberculosis (M.tb). The infection will cause focal neurological deficits and can be fatal, so that it will increase the morbidity and mortality rates. Adequate treatment is needed so that the drug can reach the center of infection. Not all anti-tuberculosis (TB) drugs can effectively cross the blood-brain and blood-cerebrospinal fluid barriers. The use of higher doses is expected to be able to work on the center of infection effectively. However, the use of higher doses will also increase the risk of drug-induced liver injury, which requires temporary discontinuation of the suspected drug.
Methods:
This scientific work aims to determine the penetration rate of first-line anti-TB drugs that are often used in patients infected with M.tb, especially TBM. Journal searches were performed on PubMed/PMC and BioMed Central/BMC search engines with the appropriate keywords. Critical appraisal analysis was carried out in selected journals. CSF sampling can be done to establish the diagnosis of TBM. CSF characteristics in TBM include lymphocyte pleocytosis, increased protein levels, and decreased glucose levels.
Results:
The results of CSF analysis depend on the volume of CSF used, the delivery of the sample, and the technical expertise of the clinician. If clinically, a patient is suspected of having TBM even though the results of CSF analysis show negative results for M.tb bacteria, a drug regimen can be given immediately to prevent worsening of the patient's condition. Bacterial cultures may be performed as treatment progresses. Based on the penetration rate of anti-TB drugs in the CSF, isoniazid (INH), pyrazinamide, and fluoroquinolones, especially levofloxacin, are drugs with fairly good CSF penetration.
Conclusion:
The use of INH is beneficial because it has high bactericidal activity. Gatifloxacin and ciprofloxacin, which are included in the fluoroquinolone class of drugs, are safe to use even though their CSF penetration is not as good as levofloxacin.
Insights
Tuberculous meningitis (TBM) treatment requires drugs that penetrate the central nervous system. Isoniazid and levofloxacin show good cerebrospinal fluid penetration, aiding TBM management.
Area of Science:
- Neurology
- Infectious Diseases
- Pharmacology
Background:
- Tuberculous meningitis (TBM) is a severe central nervous system infection caused by Mycobacterium tuberculosis.
- TBM increases morbidity and mortality due to neurological deficits.
- Effective anti-tuberculosis drugs must cross the blood-brain and blood-cerebrospinal fluid barriers for adequate treatment.
Purpose of the Study:
- To determine the cerebrospinal fluid (CSF) penetration rate of first-line anti-tuberculosis (TB) drugs used in TBM patients.
- To identify anti-TB drugs with sufficient efficacy for treating central nervous system infections.
Main Methods:
- Systematic journal searches were conducted on PubMed/PMC and BioMed Central/BMC.
- Critical appraisal analysis was performed on selected studies.
- Cerebrospinal fluid (CSF) sampling and analysis are crucial for TBM diagnosis, showing lymphocyte pleocytosis, elevated protein, and decreased glucose.
Main Results:
- Isoniazid (INH), pyrazinamide, and fluoroquinolones, particularly levofloxacin, demonstrate favorable CSF penetration.
- CSF analysis results are dependent on sample volume, transport, and technical expertise.
- Empirical treatment may be initiated for suspected TBM even with negative initial CSF analysis.
Conclusions:
- Isoniazid (INH) offers high bactericidal activity and is beneficial for TBM treatment.
- Levofloxacin exhibits good CSF penetration, making it a valuable option.
- Fluoroquinolones like gatifloxacin and ciprofloxacin are safe alternatives, though with less optimal CSF penetration than levofloxacin.
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