Visual detection of Brucella in bovine biological samples using DNA-activated gold nanoparticles.
Visual detection of Brucella in bovine biological samples using DNA-activated gold nanoparticles.
复制标题
DOI:
10.1371/journal.pone.0180919
复制
发表时间:
2017
期刊:
影响因子:
3.7
通讯作者:
Chaudhuri P
中科院分区:
文献类型:
--
作者:
Pal D;Boby N;Kumar S;Kaur G;Ali SA;Reboud J;Shrivastava S;Gupta PK;Cooper JM;Chaudhuri P
Brucellosis is a bacterial disease, which, although affecting cattle primarily, has been associated with human infections, making its detection an important challenge. The existing gold standard diagnosis relies on the culture of bacteria which is a lengthy and costly process, taking up to 45 days. New technologies based on molecular diagnosis have been proposed, either through dip-stick, immunological assays, which have limited specificity, or using nucleic acid tests, which enable to identify the pathogen, but are impractical for use in the field, where most of the reservoir cases are located. Here we demonstrate a new test based on hybridization assays with metal nanoparticles, which, upon detection of a specific pathogen-derived DNA sequence, yield a visual colour change. We characterise the components used in the assay with a range of analytical techniques and show sensitivities down to 1000 cfu/ml for the detection of Brucella. Finally, we demonstrate that the assay works in a range of bovine samples including semen, milk and urine, opening up the potential for its use in the field, in low-resource settings.
登录
查看更多内容
影响因子:
3.3
作者:
Bounaadja, Lotfi;Albert, David;Garin-Bastuji, Bruno
通讯作者:
Garin-Bastuji, Bruno
影响因子:
3.3
作者:
Amin, AS;Hamdy, MER;Ibrahim, AK
通讯作者:
Ibrahim, AK
影响因子:
4
作者:
Soleimani, M.;Shams, S.;Majidzadeh-A, K.
通讯作者:
Majidzadeh-A, K.
影响因子:
1.1
作者:
Christopher S;Umapathy BL;Ravikumar KL
通讯作者:
Ravikumar KL
影响因子:
0.4
作者:
Dibbern, A. G.;Botaro, B. G.;Santos, M. V.
通讯作者:
Santos, M. V.