Objective: To develop a new sandwich based lateral flow immunochromatographic strip for rapid detection of circulating Schistosoma mansoni antigen in serum and urine samples of patients with active schistosomiasis. Me...Objective: To develop a new sandwich based lateral flow immunochromatographic strip for rapid detection of circulating Schistosoma mansoni antigen in serum and urine samples of patients with active schistosomiasis. Methods: This lateral flow immunochromatographic strip was prepared by using anti-Schistosoma mansoni soluble egg antigen monoclonal antibody conjugated gold nanoparticles (MAb-AuNPs) as antigen-detecting antibody, while crystalline material (MCM)-41-MAb bioconjugate was immobilized at the test line as antigen-capturing antibody. Both antigen capturing and detecting antibodies formed sandwich complexes with circulating Schistosoma mansoni antigen in the positive samples. Sandwich complexes immobilized at the test line gave distinct red color. The assay reliability was examined by using urine and serum samples of 60 Schistosoma mansoni infected patients, 20 patients infected with parasites other than Schistosoma, and 20 healthy individuals as negative controls. Results were compared with those obtained via sandwich enzyme linked immunosorbent assay (ELISA). Results: The detection limit of circulating Schistosoma mansoni antigen by lateral flow immunochromatographic strip was lower (3 ng/mL) than the detection limit by ELISA (30 ng/mL). The sensitivity and specificity of lateral flow immunochromatographic strip in urine samples were 98.3% and 97.5%, respectively compared to 93.5% and 90.0% by ELISA. In serum samples, they were 100.0% and 97.5%, respectively compared to 97.0% and 95.0% by ELISA. The strip test took approximately 10 min to complete. Conclusions: This new lateral flow immunochromatographic strip offers a sensitive, rapid, and field applicable technique for diagnosis of active schistosomiasis.展开更多
BACKGROUND Irritable bowel syndrome(IBS)is a highly prevalent gastrointestinal disorder in children and adults,which increased over the past twenty years.The Mediterranean diet is a well-known diet full of antioxidant...BACKGROUND Irritable bowel syndrome(IBS)is a highly prevalent gastrointestinal disorder in children and adults,which increased over the past twenty years.The Mediterranean diet is a well-known diet full of antioxidants and anti-inflammatory ingredients.AIM To evaluate the safety,tolerability,and effects of adherence to the Mediterranean diet on disease patterns in children and adolescents with IBS.METHODS This prospective,cross-sectional case-controlled study included 100 consecutive IBS patients diagnosed according to Rome IV criteria,aged 12-18 years.Patients Group II on their regular diet for six months.Besides IBS scores(IBS-SSS,IBS-QoL,and total score),different clinical and laboratory parameters were evaluated at the start and end of the study.RESULTS The Mediterranean diet was safe and well-tolerated in IBS patients.IBS children and adolescents with good adherence to the Mediterranean diet(KIDMED Score≥8 points);group I showed significant improvement in IBS scores.IBS-SSS in the Mediterranean diet group was 237.2±65 at the beginning of the study and decreased to 163.2±33.8 at the end of the study(P<0.001).It did not show a significant improvement in the group with a regular diet(248.3±71.1 at the beginning of the study compared to 228.5±54.3 at the study end with P<0.05).The mean IBS-SSS in the Mediterranean diet group significantly improved compared with the group with a regular diet.Mean IBS-QoL in group I improved from 57.3±12.9 at the start of the study to 72.4±11.2 at the study end(P<0.001)and significantly improved when compared to its level in group II at the study end(59.2±12.7 with P<0.001),while group II showed no significant improvement in IBSQoL at the study end when compared to the beginning of the study(59.2±11.7 with P>0.05).The mean total IBS score in group I became 28.8±11.2 at the end of our study compared to 24.1±10.4 at the start(P<0.05)and significantly improved when compared to its level in group II at the end of the study(22.1±12.5 with P<0.05),while in group II,non-significant improvement in the total score at the end of our study compared to its mean level at the start of the study(22.8±13.5 with P>0.05).CONCLUSION The Mediterranean diet was safe and associated with significant improvement in IBS scores in children and adolescent patients with IBS.展开更多
文摘Objective: To develop a new sandwich based lateral flow immunochromatographic strip for rapid detection of circulating Schistosoma mansoni antigen in serum and urine samples of patients with active schistosomiasis. Methods: This lateral flow immunochromatographic strip was prepared by using anti-Schistosoma mansoni soluble egg antigen monoclonal antibody conjugated gold nanoparticles (MAb-AuNPs) as antigen-detecting antibody, while crystalline material (MCM)-41-MAb bioconjugate was immobilized at the test line as antigen-capturing antibody. Both antigen capturing and detecting antibodies formed sandwich complexes with circulating Schistosoma mansoni antigen in the positive samples. Sandwich complexes immobilized at the test line gave distinct red color. The assay reliability was examined by using urine and serum samples of 60 Schistosoma mansoni infected patients, 20 patients infected with parasites other than Schistosoma, and 20 healthy individuals as negative controls. Results were compared with those obtained via sandwich enzyme linked immunosorbent assay (ELISA). Results: The detection limit of circulating Schistosoma mansoni antigen by lateral flow immunochromatographic strip was lower (3 ng/mL) than the detection limit by ELISA (30 ng/mL). The sensitivity and specificity of lateral flow immunochromatographic strip in urine samples were 98.3% and 97.5%, respectively compared to 93.5% and 90.0% by ELISA. In serum samples, they were 100.0% and 97.5%, respectively compared to 97.0% and 95.0% by ELISA. The strip test took approximately 10 min to complete. Conclusions: This new lateral flow immunochromatographic strip offers a sensitive, rapid, and field applicable technique for diagnosis of active schistosomiasis.
文摘BACKGROUND Irritable bowel syndrome(IBS)is a highly prevalent gastrointestinal disorder in children and adults,which increased over the past twenty years.The Mediterranean diet is a well-known diet full of antioxidants and anti-inflammatory ingredients.AIM To evaluate the safety,tolerability,and effects of adherence to the Mediterranean diet on disease patterns in children and adolescents with IBS.METHODS This prospective,cross-sectional case-controlled study included 100 consecutive IBS patients diagnosed according to Rome IV criteria,aged 12-18 years.Patients Group II on their regular diet for six months.Besides IBS scores(IBS-SSS,IBS-QoL,and total score),different clinical and laboratory parameters were evaluated at the start and end of the study.RESULTS The Mediterranean diet was safe and well-tolerated in IBS patients.IBS children and adolescents with good adherence to the Mediterranean diet(KIDMED Score≥8 points);group I showed significant improvement in IBS scores.IBS-SSS in the Mediterranean diet group was 237.2±65 at the beginning of the study and decreased to 163.2±33.8 at the end of the study(P<0.001).It did not show a significant improvement in the group with a regular diet(248.3±71.1 at the beginning of the study compared to 228.5±54.3 at the study end with P<0.05).The mean IBS-SSS in the Mediterranean diet group significantly improved compared with the group with a regular diet.Mean IBS-QoL in group I improved from 57.3±12.9 at the start of the study to 72.4±11.2 at the study end(P<0.001)and significantly improved when compared to its level in group II at the study end(59.2±12.7 with P<0.001),while group II showed no significant improvement in IBSQoL at the study end when compared to the beginning of the study(59.2±11.7 with P>0.05).The mean total IBS score in group I became 28.8±11.2 at the end of our study compared to 24.1±10.4 at the start(P<0.05)and significantly improved when compared to its level in group II at the end of the study(22.1±12.5 with P<0.05),while in group II,non-significant improvement in the total score at the end of our study compared to its mean level at the start of the study(22.8±13.5 with P>0.05).CONCLUSION The Mediterranean diet was safe and associated with significant improvement in IBS scores in children and adolescent patients with IBS.
