Objective:To detect leishmanial antigens in pre and post treated urine of visceral leishmaniasis (VL) patients.Methods:Urine and serum sample from three VL patients were collected. Ammonium sulphate precipitation and ...Objective:To detect leishmanial antigens in pre and post treated urine of visceral leishmaniasis (VL) patients.Methods:Urine and serum sample from three VL patients were collected. Ammonium sulphate precipitation and purification of urine sample was done for proteins isolation.SDS PAGE of proteins was done followed by western blotting,with the patient’s pre and post treatment serum.Results:Eight proteins of molecular weights 17 kDa,25 kDa,28 kDa,42 kDa, 47 kDa,54 kDa,60 kDa and 85 kDa were detected in the urine of VL patients before treatment. After treatment with miltefosine,none of the above proteins was detected in urine samples.The western blot analysis with pre treatment serum confirmed the antigenicity of four urinary proteins of molecular weights 25 kDa,28 kDa,54 kDa and 60 kDa.The seropositivity with 25 kDa and 28 kDa antigens was negative with serum obtained after the completion of treatment.Conclusions:In the context to unavailability of a prognostic tool,urinary leishmanial antigens may offer a better choice and may also be useful as immunoprophylactic candidates.展开更多
Coxiella burnetii is the etiological agent of Q fever.To identify its major seroreactive proteins,a subgenomic protein array was developed.A total of 101 assumed virulence-associated recombinant proteins of C.burnetii...Coxiella burnetii is the etiological agent of Q fever.To identify its major seroreactive proteins,a subgenomic protein array was developed.A total of 101 assumed virulence-associated recombinant proteins of C.burnetii were probed with sera from mice experimentally infected with C.burnetii and sera from Q fever patients.Sixteen proteins were recognized as major seroreactive antigens by the mouse sera.Seven of these 16 proteins reacted positively with at least 45% of Q fever patient sera.Notably,HspB had the highest fluorescence intensity value and positive frequency of all the proteins on the array when probed with both Q fever patient sera and mouse sera.These results suggest that these seven major seroreactive proteins,particularly HspB,are potential serodiagnostic and subunit vaccine antigens of Q fever.展开更多
基金supported by a grant(No.27(0183)/08/EMR-II) from Council of Scientific and Industrial Research(CSIR), New Delhi,India
文摘Objective:To detect leishmanial antigens in pre and post treated urine of visceral leishmaniasis (VL) patients.Methods:Urine and serum sample from three VL patients were collected. Ammonium sulphate precipitation and purification of urine sample was done for proteins isolation.SDS PAGE of proteins was done followed by western blotting,with the patient’s pre and post treatment serum.Results:Eight proteins of molecular weights 17 kDa,25 kDa,28 kDa,42 kDa, 47 kDa,54 kDa,60 kDa and 85 kDa were detected in the urine of VL patients before treatment. After treatment with miltefosine,none of the above proteins was detected in urine samples.The western blot analysis with pre treatment serum confirmed the antigenicity of four urinary proteins of molecular weights 25 kDa,28 kDa,54 kDa and 60 kDa.The seropositivity with 25 kDa and 28 kDa antigens was negative with serum obtained after the completion of treatment.Conclusions:In the context to unavailability of a prognostic tool,urinary leishmanial antigens may offer a better choice and may also be useful as immunoprophylactic candidates.
基金supported by the National Natural Science Foundation of China(31170161)National Basic Research Program of China(2010CB530200,2010CB530205)
文摘Coxiella burnetii is the etiological agent of Q fever.To identify its major seroreactive proteins,a subgenomic protein array was developed.A total of 101 assumed virulence-associated recombinant proteins of C.burnetii were probed with sera from mice experimentally infected with C.burnetii and sera from Q fever patients.Sixteen proteins were recognized as major seroreactive antigens by the mouse sera.Seven of these 16 proteins reacted positively with at least 45% of Q fever patient sera.Notably,HspB had the highest fluorescence intensity value and positive frequency of all the proteins on the array when probed with both Q fever patient sera and mouse sera.These results suggest that these seven major seroreactive proteins,particularly HspB,are potential serodiagnostic and subunit vaccine antigens of Q fever.
