IgG Antibody to M. Tuberculosis, TB-IgG ELISA Kit (DEIA083)

Regulatory status: For research use only, not for use in diagnostic procedures.

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serum, plasma
Species Reactivity
Intended Use
This kit is anenzyme-linked immunosorbent assay for qualitative detection of IgG antibodies to Mycobacterium tuberculosis in human serum or plasma. It is intended for diagnosing and monitoring of patients related to infection by M. tuberculosis and other Mycobacteria.
Contents of Kit
1. Microplate
2. Negative Control
3. Positive Control
4. HRP-Conjugate Antigen
5. Specimen Diluent
6. TMB Solution A
7. TMB Solution B
8. TMB Stop Solution
9. Wash Buffer (20X)
Store the kit reagents at 2-8°C. For more detailed information, please download the following document on our website.


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Ertapenem and Faropenem againstMycobacterium tuberculosis: in vitro testing and comparison by macro and microdilution


Authors: Gonzalo, Ximena; Satta, Giovanni; Ortiz Canseco, Julio; McHugh, Timothy D.; Drobniewski, Francis

Background Interest in carbapenems has been rising in the last few years due to the emergence of drug resistant tuberculosis. Ertapenem (ETP), given once a day parenteral, and faropenem (FAR), oral, have a better administration profile than meropenem (MEM), imipenem (IPM) and doripenem (DOR). The addition of amoxicillin-clavulanate (AMC) inhibits the hydrolysis by the carbapenemase present inMycobacterium tuberculosis(MTB). The aim of this study was to determine the in vitro activity of ETP and FAR against susceptible and resistant clinical MTB strains by two widely use methodologies, the BACTEC960 MGIT and microdilution. Results 19 clinical isolates with different susceptibility profiles and H37Rv were included. Minimal inhibitory concentration (MIC) testing was performed using two methods of different concentrations of ETP and FAR with and without AMC. MIC50 was 2 and 8 for FAR with and without AMC by both methods. MIC90 was > 16 and > 8 by microdilution and MGIT respectively and did not change after AMC addition. 18/20 samples were resistant to the highest concentration of ETP, with and without AMC. Half of the samples had some susceptibility to FAR; addition of AMC further reduced the MIC level in seven isolates. 10/20 isolates showed susceptibility to FAR and the addition of AMC further reduced the MIC in 7 isolates. However, most of the MICs were near the limit of effectiveness (8 mu g/mL). Resistance to FAR was associated with resistance to MEM (p = 0.04) but not to resistance profiles of other drugs, including M/XDR status. Conclusions The lack of ETP activity may be associated with its degradation, independent of carbapenemase, during incubation. No susceptibility pattern to traditional drugs can predict susceptibility to FAR and susceptibility testing is not routinely available. PK/PD studies are needed as reaching the concentrations tested in these experiments may be challenging. This work highlighted some of the limitations of carbapenem use. More evidence is needed to clarify their true impact in TB treatment and outcome, considering the financial burden, complications and microbiota changes associated with their use.

Thioridazine Is an Efflux Pump Inhibitor in Mycobacterium avium Complex but of Limited Clinical Relevance


Authors: Ruth, Mike Marvin; Pennings, Lian J.; Koeken, Valerie A. C. M.; Schildkraut, Jodie A.; Hashemi, Aria; Wertheim, Heiman F. L.; Hoefsloot, Wouter; van Ingen, Jakko

Treatment of Mycobacterium avium complex pulmonary disease (MAC-PD) is challenging partly due to high efflux pump expression. Thioridazine might block these efflux pumps. We explore the efficacy of thioridazine against M. avium isolates using MICs, time-kill combination assays, ex vivo macrophage infection as- says, and efflux assays. Thioridazine is bactericidal against M. avium , inhibits intracellular growth at 2X MIC, and blocks ethidium bromide efflux. However, its toxicity and low plasma concentrations make it unlikely to add efficacy to MAC-PD therapy.

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