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Detection of Clostridium perfringens alpha toxin gene in lambs by loop mediated isothermal amplification

Identifieur interne : 000868 ( Main/Exploration ); précédent : 000867; suivant : 000869

Detection of Clostridium perfringens alpha toxin gene in lambs by loop mediated isothermal amplification

Auteurs : B. Radhika [Inde] ; N. Vinod Kumar [Inde] ; D. Sreenivasulu [Inde]

Source :

RBID : PMC:4819352

Abstract

Aim:

The loop mediated isothermal amplification (LAMP) was standardized for rapid detection of Clostridium perfringens.

Materials and Methods:

A total of 120 fecal samples were collected from enterotoxemia suspected lambs were used for screening of C. perfringens cpa gene by LAMP. The specificity of the LAMP amplified products was tested by digesting with restriction enzyme XmnI for alpha toxin gene.

Results:

Out of 120 samples screened 112 (93.3%) samples were positive by both LAMP and polymerase chain reaction (PCR) for detection of cpa gene which indicated the equal sensitivity of both the tests. The enzyme produced single cut in 162 base pair amplified product of alpha toxin gene at 81 base pair resulting in a single band in gel electrophoresis.

Conclusion:

Both LAMP and PCR for detection of cpa gene indicated the equal sensitivity of both the tests. Standardization of LAMP reaction for amplification of epsilon and beta toxin genes will help to identify the C. perfringens toxin types from the clinical samples. The test could be a suitable alternative to the PCR in detection of toxin types without the help of sophisticated machinery like thermal cycler. Considering its simplicity in operation and high sensitivity, there is the potential use of this technique in clinical diagnosis and surveillance of infectious diseases.


Url:
DOI: 10.14202/vetworld.2016.60-64
PubMed: 27051186
PubMed Central: 4819352


Affiliations:


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<p>The loop mediated isothermal amplification (LAMP) was standardized for rapid detection of
<italic>Clostridium perfringens</italic>
.</p>
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<sec id="st2">
<title>Materials and Methods:</title>
<p>A total of 120 fecal samples were collected from enterotoxemia suspected lambs were used for screening of
<italic>C. perfringens cpa</italic>
gene by LAMP. The specificity of the LAMP amplified products was tested by digesting with restriction enzyme
<italic>XmnI</italic>
for alpha toxin gene.</p>
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<p>Out of 120 samples screened 112 (93.3%) samples were positive by both LAMP and polymerase chain reaction (PCR) for detection of
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<title>Conclusion:</title>
<p>Both LAMP and PCR for detection of
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gene indicated the equal sensitivity of both the tests. Standardization of LAMP reaction for amplification of epsilon and beta toxin genes will help to identify the
<italic>C. perfringens</italic>
toxin types from the clinical samples. The test could be a suitable alternative to the PCR in detection of toxin types without the help of sophisticated machinery like thermal cycler. Considering its simplicity in operation and high sensitivity, there is the potential use of this technique in clinical diagnosis and surveillance of infectious diseases.</p>
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