Pseudotyping of VSV with Ebola virus glycoprotein is superior to HIV-1 for the assessment of neutralising antibodies

February 15, 2022 0 Comments

Ebola virus (EBOV) is an enveloped, single-stranded RNA virus that can cause Ebola virus disease (EVD). It is thought that EVD survivors are protected against subsequent infection with EBOV and that neutralising antibodies to the viral surface glycoprotein (GP) are potential correlates of protection. Serological studies are vital to assess neutralising antibodies targeted to EBOV …

Anti-CD25 monoclonal antibody enhances the protective efficacy of Schistosoma japonicum GST vaccine via inhibition of CD4+CD25+Foxp3+ regulatory T cells

February 15, 2022 0 Comments

The effect of anti-CD25 monoclonal antibody (anti-CD25 mAb) on the protection efficacy of Schistosoma japonicum 26 kDa GST (glutathione-S-transferase) vaccine was evaluated. Mice were immunized with GST before infection with S. japonicum cercariae and then injected with anti-CD25 mAb. The worm reduction rate was promoted from 24.18% in mice with GST immunization to 47.09% in …

Effect of COVID-19 on Anti-S Antibody Response in Healthcare Workers Six Months Post-Vaccination

February 15, 2022 0 Comments

The current study aimed to determine to what extent prior COVID-19 infection affects the response of specific antibodies following vaccination. The study involved 173 healthcare professionals who completed the two-dose vaccination course with BNT162b2, including 40 who previously experienced clinical COVID-19. The levels of anti-SARS-CoV-2 S1S2 IgG (anti-S) and, in some cases, anti-SARS-CoV-S-RBD IgG (anti-S-RBD) …

HRP-conjugated Anti-EPO antibodies for direct rhEPO detection – proof of concept

February 15, 2022 0 Comments

Anti-doping testing for recombinant human erythropoietin (EPO) is routinely performed by gel electrophoresis followed by western blot analysis with primary and secondary antibodies. The two antibody steps add more than 24 hours to the testing time of a purified sample. The aim of this study was to test the concept of using directly horseradish-peroxidase (HRP)-conjugated …

Secondary immunoglobulin responses of BALB/c mice previously stimulated with goat anti-mouse IgD.

February 15, 2022 0 Comments

Intravenous injection of goat antibodies to mouse IgD (GAMD) into BALB/c mice has been shown to induce vigorous T-cell dependent immunoglobulin responses, particularly of the IgG1 and IgE isotypes. We have confirmed these findings and show that IgA responses are also triggered in this model. Since the study of IgE regulation in allergic individuals is …

An Anti-HER2 Monoclonal Antibody H 2 Mab-41 Exerts Antitumor Activities in Mouse Xenograft Model Using Dog HER2-Overexpressed Cells

February 15, 2022 0 Comments

Overexpression of human epidermal growth factor receptor 2 (HER2) has been reported in a variety of cancer types, including breast, lung, gastric, pancreatic, and colorectal cancers. Trastuzumab, a humanized anti-HER2 monoclonal antibody (mAb), has been shown to provide significant survival benefits in HER2-overexpressing breast cancer and gastric cancer patients. Previously, an anti-HER2 mAb, H2Mab-41 (IgG2b, …

Adaptation of an ELISA assay for detection of IgG 2a responses against therapeutic monoclonal antibodies in a mouse immunization model

February 15, 2022 0 Comments

Biotherapeutic monoclonal antibodies (mAb) play important roles in clinical medicine but their potential to elicit immune responses in patients remains a major issue. In a study designed to investigate the effect of aggregation on immunogenic responses, mice were immunized with two monoclonal antibodies (mAb1 and mAb2). Serum levels of total IgG, IgG1, and IgG2a were measured …

In-House Developed ELISA Indicates High Prevalence of Anti- Echinococcus granulosus IgG in Sheep Population-An Update from Pakistan

February 15, 2022 0 Comments

Cystic echinococcosis (CE) is a World Health Organization (WHO)-listed neglected tropical farm economy jeopardizing and public health concern disease. This study was aimed at furnishing sero-epidemiological baseline data of CE in sheep in Pakistan, where data are non-existent. For this purpose, two sheep-rich provinces of Pakistan were selected, and 728 sheep sera were collected using …

Preparation of rabbit polyclonal antibody against porcine gasdermin D protein and determination of the expression of gasdermin D in cultured cells and porcine tissues

February 15, 2022 0 Comments

Gasdermin-D (GSDMD) is a member of the gasdermin (Gsdm) protein family, and its cleavage by inflammatory cysteine proteases (caspases, CASPs) is a critical event in cell pyroptosis. The role and functions of GSDMD on mice and humans are widely studied, but its expression, structure, and function in other species are less known. In the present …