Detection of antibodies to a cocktail of mycobacterial excretory–secretory antigens in tuberculosis by ELISA and immunoblotting
نویسندگان
چکیده
The seroreactivity of a cocktail of purified mycobacterial excretory–secretory (ES) antigens ES-31, ES-41 and ES43 was assessed by ELISA and immunoblotting in patients with pulmonary tuberculosis. The ES-31 antigen was isolated by affinity chromatography and ES-41 and ES-43 were isolated by fast protein liquid chromatography from Mycobacterium tuberculosis H37Ra culture filtrate. Seven of 27 pulmonary tuberculosis sera were not reactive to ES-31 antigen by ELISA. However, 6 out of 7 turned positive, when a cocktail of ES-31, ES-41 and ES-43 antigens was used in ELISA. Seroreactivity pattern of cocktail antigen was studied in immunoblotting using tuberculous sera. Addition of ES-41 and ES-43 antigens helped in increasing the sensitivity compared to ES31 alone. Further, ELISA was observed to be more sensitive than immunoblotting using a cocktail of antigens.
منابع مشابه
Isolation and identification of excretory-secretory and somatic antigens from the Oestrus ovis larvae by SDS-PAGE and immunoblotting
Oestrus ovis is an economically important parasite of small ruminants and a zoonotic parasite with many reports of ophthalmomyiasis in human from Iran and other countries. The aim of the peresent studywas the isolation and identification of excretory-secretory (ES) and somatic (S) antigens of O. ovis second and third stage larvae (L2, L3) collected from Arabi sheep breeds loca...
متن کاملمقایسه آنتیژنهای خام فاسیولا هپاتیکا و فاسیولا ژیگانتیکا بهوسیله آزمایش الیزا
Background: Fasciolosis is a worldwide disease with major economic and public health consequences. Early detection of the infection is important for the prevention and control of the disease. ELISA allows for early detection of fasciolosis in man and animals. Fasciolosis is caused by Fasciola hepatica and F. gigantica in man and domestic animals respectively. These two species have many similar...
متن کاملIdentification of excretory-secretory products from larval stages of Ostertagia circumcincta cultured in vitro by SDS-PAGE and immunoblotting
Exsheathing fluid (EF) and excretory-secretory products (ES) of infective third-stage cultured larvae ofOstertagia circumcincta were analysed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDSPAGE). Five and seven predominant proteins were found in the EF and ES products, respectively. Immunoblotting by sheep pre-infection serum did not react with any of the EF and ES proteins, b...
متن کاملComparison of Immunoblotting and ELISA for Detection of Anti-Ganglioside Antibodies in Children with Guillain-Barre Syndrome
Background: Anti-ganglioside antibody assays are widely used for diagnosis of autoimmune peripheral neuropathies. Objective: This study aimed to determine serum levels of anti-ganglioside antibodies in children with Guillain-Barre syndrome by immunoblotting technique and compare the results with those obtained by ELISA method. Method: In this investigation, 50 children with Guillain-Barre syndr...
متن کاملEffect of Intra-Peritoneal Injection of Chitosan Nanoparticle Loaded with Leishmania major Excretory-Secretory Antigens on Macrophage Function in Exposure to Parasites in BALB/c Mice.
Background: Leishmania major (L.major) is a causative agent of leishmaniasis. The disease has now become a public health problem. Modulation of the immune responses to inhibit the infection or the proliferation of the parasite is an effective way to overcome the leishmaniosis. Leishmania parasite secretory-excretory antigens are responsible for immune system modulation; therefore, they are u...
متن کامل