Journal: Frontiers in Microbiology

Article Title: Presence of Segmented Filamentous Bacteria in Human Children and Its Potential Role in the Modulation of Human Gut Immunity

doi: 10.3389/fmicb.2018.01403

Figure Lengend Snippet: (A) Overall relationship between the level of sIgA in luminal fluids from the SFB-positive and SFB-negative patients. (B) Relationship between the level of sIgA and the ages of children. A total number of 47 samples (23 SFB-positive and 24 SFB-negative) were used. 500 μl of luminal fluids from each patient were used for the measurement of sIgA as described in the Section “Materials and Methods.” The supernatants were assayed for total secretory IgA using a human IgA ELISA Detection Kit as described in the section “Materials and Methods.” The sIgA was expressed as μg/ml of fecal materials. P -values were calculated using Student’s t -test.

Article Snippet: Samples were incubated at room temperature for 2 h. Total sIgA was quantified by ELISA using a human secretory IgA ELISA detection Kit (Elabscience, Wuhan, China).

Techniques: Enzyme-linked Immunosorbent Assay

Journal: Frontiers in Immunology

Article Title: Circulating and Salivary Antibodies to Fusobacterium nucleatum Are Associated With Cystic Pancreatic Neoplasm Malignancy

doi: 10.3389/fimmu.2020.02003

Figure Lengend Snippet: Circulating plasma antibody reactivity to oral commensals identified in pancreatic tumor lesions. Plasma diluent (1/300) from patients with histology verified pancreas tissues: IPMN with low grade dysplasia (LGD-IPMN), IPMN with high grade dysplasia or with invasive cancer (HGD-IPMN + Cancer), or benign tumors/non-IPMN (Control) was tested in duplicates in ELISA plates coated with indicated antigen in (A–F) (bacteria: 5 × 10E7 CFU/ml, peptide 10 μg/mL). The total plasma IgG level is shown in (G) . Internal control Mean OD absorbance values of duplicates are shown. Statistical analysis was performed using the Kolmogorov–Smirnov test, ** p < 0.01, *** p < 0.001, and **** p < 0.0001.

Article Snippet: Total levels of salivary IgA and plasma IgG antibodies were measured using Human IgA/IgG ELISA Kit (Novus Biologicals, Colorado, United States) according to the manufacturer’s instructions.

Techniques: Clinical Proteomics, Control, Enzyme-linked Immunosorbent Assay, Bacteria

Journal: Frontiers in Immunology

Article Title: Circulating and Salivary Antibodies to Fusobacterium nucleatum Are Associated With Cystic Pancreatic Neoplasm Malignancy

doi: 10.3389/fimmu.2020.02003

Figure Lengend Snippet: Salivary IgA antibody reactivity to oral commensals quantified by ELISA using saliva diluent (1/16) from indicated patient group. Salivary IgA reactivity to F. nucleatum , the Fap2 mimotope, and S. gordonii (A,B,F) in HG-IPMN/Cancer patients is significantly increased compared to other groups. The differences in antibody levels against bacterial antigens of G. adiacens, S. anginosus , and E. coli (C,D,E) were insignificant between groups. Total plasma IgA level did not differ between the groups (G) . Statistical analysis was performed using the Kolmogorov–Smirnov test, * p < 0.05 and ** p < 0.01.

Article Snippet: Total levels of salivary IgA and plasma IgG antibodies were measured using Human IgA/IgG ELISA Kit (Novus Biologicals, Colorado, United States) according to the manufacturer’s instructions.

Techniques: Enzyme-linked Immunosorbent Assay, Clinical Proteomics

Journal: Frontiers in Immunology

Article Title: Circulating and Salivary Antibodies to Fusobacterium nucleatum Are Associated With Cystic Pancreatic Neoplasm Malignancy

doi: 10.3389/fimmu.2020.02003

Figure Lengend Snippet: Correlation between circulating plasma (A) or salivary (B) antibody reactivity to F. nucleatum and Fap2 mimotope, or between circulating plasma antibody and salivary antibodies to either of antigen (C,D) . Competitive ELISA (E) with saliva samples with or without antigen pre-absorption as indicated for 2 h, then subjected to Fap2 mimotope ELISA test. Statistical analysis was performed using two-tailed Pearson correlation test and Wilcoxon test for two related samples. ** p < 0.01, ns = not significant.

Article Snippet: Total levels of salivary IgA and plasma IgG antibodies were measured using Human IgA/IgG ELISA Kit (Novus Biologicals, Colorado, United States) according to the manufacturer’s instructions.

Techniques: Clinical Proteomics, Competitive ELISA, Enzyme-linked Immunosorbent Assay, Two Tailed Test