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Maternal obesity associates with altered humoral immunity in blood and colostrum.
Mucosal Immunol
January 2025
The Institute for Obesity Research, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501 Sur, Tecnologico, 64700 Monterrey, Nuevo Leon, Mexico; School of Engineering and Sciences, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501 Sur, Tecnologico, 64849 Monterrey, Nuevo Leon, Mexico. Electronic address:
Maternal obesity is a condition with increasing prevalence worldwide, that correlates with negative infant outcomes. Here we performed an observational cross-sectional study, where peripheral blood and colostrum samples from 37 mothers with BMI between 18.5-25 or > 30 kg/m (21 and 16 mothers, respectively) were collected 24-48 h postpartum.
View Article and Find Full Text PDFReducing IgG accumulation via neonatal Fc receptor (FcRn) blockade relieves neuropathic pain.
Brain Behav Immun
January 2025
Laboratories of Neuroimmunology, Department of Symptom Research, University of Texas MD Anderson Cancer Center, Houston, USA. Electronic address:
Preclinical and clinical studies have established that autoreactive immunoglobulin G (IgG) can drive neuropathic pain. We recently demonstrated that sciatic nerve chronic constriction injury (CCI) in male and female mice results in the production of pronociceptive IgG, which accumulates around the lumbar region, including within the dorsal root ganglia (DRG) and spinal cord, facilitating the development of neuropathic pain. These data raise the intriguing possibility that neuropathic pain may be alleviated by reducing the accumulation of IgG.
View Article and Find Full Text PDFEffect of formulation composition on trastuzumab stability.
Int J Pharm
January 2025
Department of Pharmaceutics, College of Pharmacy, University of Minnesota, Minneapolis, MN 55455, United States. Electronic address:
For monoclonal antibody drug products as for other biologics, while the innovator drug products first becomes commercially available, they are often followed by one or more biosimilar products. These biosimilars often differ from the innovator product, as well as from each other, in their formulation composition. However, the impact of the formulation composition on the stability of the active pharmaceutical ingredient subjected to different 'stresses' is still not understood.
View Article and Find Full Text PDFIL-21 signaling promotes IgM B cell proliferation and antibody production via JAK/STAT3 and AKT pathways in early vertebrates.
Dev Comp Immunol
January 2025
Institute of Modern Aquaculture Science and Engineering, School of Life Sciences, South China Normal University, Guangzhou, 510631, China; Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Engineering Technology Research Center for Environmentally-Friendly Aquaculture, South China Normal University, Guangzhou, 510631, China. Electronic address:
IL-21 is a type I cytokine that is produced by activated CD4 T cells and has a significant impact on the growth, survival, and functional activation of B lymphocytes. While IL-21 has been identified in several teleost fish species, its function and associated mechanisms focus on teleost fish B cells remain largely unknown. In this study, we aimed to investigate the effects of IL-21 (OnIL-21) on IgM B cells from Nile tilapia (Oreochromis niloticus), as well as the intracellular signaling transduction pathway involved.
View Article and Find Full Text PDFCD20 and CD19 promote proliferation driven by the IgM-TLR9-L265P MyD88 complex.
Int Immunol
January 2025
Division of Innate Immunity, The Institute of Medical Science, The University of Tokyo; Minato-ku, Tokyo 108-8639, Japan.
The cancer driver mutation L265P MyD88 is found in approximately 30 % of cases in the activated B cell-like subgroup of diffuse large B cell-like lymphoma (ABC DLBCL). L265P MyD88 forms a complex with TLR9 and IgM, referred to as the My-T-BCR complex, to drive proliferation. We here show that the B cell surface molecules CD19 and CD20 enhance proliferation mediated by the My-T-BCR complex.
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