Volume 217, Issue 3, September 2024
Editor’s Choice
Elevated serum levels of soluble B-cell maturation antigen as a prognostic biomarker for multiple myeloma
Chemiluminescence method was first established to measure serum BCMA and proved to be sensitive and practical for in clinical samples. Serum BCMA is an important parameter for treatment efficacy evaluation and prognosis prediction in MM, especially in some special subpopulations, such as non-secretory MM, IgD-MM, and patients with BCMA-CAR-T therapy. The accuracy of the survival prediction of MM was further optimized by integrating sBCMA level into the R2-ISS.
Autoimmunity/Autoimmune Disease
Easy recognition and high autoimmune hepatitis specificity of smooth muscle antibodies giving an actin microfilament immunofluorescent pattern on embryonal vascular smooth muscle cells
(i) The search for smooth muscle antibodies (SMA) is a cornerstone of hepatic autoimmune serology, being one of the diagnostic criteria of autoimmune hepatitis (AIH). (ii) SMA are directed against structures of the cytoskeleton such as microfilaments, intermediate filaments, and microtubules. Although they may be detected in sera of patients with viral hepatitis, drug-induced hepatitis, and alcohol-related and non-alcohol-related fatty liver disease, SMA directed against actin microfilaments (MF-SMA) are highly AIH-specific. (iii) The recommended rodent tissue-based IFL for detecting MF-SMA is somewhat complicated, and the interpretation of the results depends on the operator’s experience. The use of an embryonal aorta vascular smooth muscle cell line-based IFL assay provides high accuracy and easy detection of MF-SMA, the most AIH-specific SMA.
Inflammation/Inflammatory Disease
Chronic skin damage induces small intestinal damage via IL-13-induced apoptosis
Gut and skin have been found to affect each other through a bidirectional connection (gut–skin axis), though the precise mechanisms remain to be elucidated. In this study, surfactant-mediated mechanical chronic skin damage caused morphological changes in the small intestine of mice, accompanied by increased intestinal permeability, possibly through the interleukin-13-induced apoptosis of mast cells in the epithelium.
Follow-up of immune response in patients with common variable immunodeficiency following SARS-CoV-2 vaccination
The COVID-19 pandemic highlighted the importance of effective vaccination strategies in controlling the spread of infectious diseases. In this study, we evaluated the humoral and cellular immune responses after four doses of mRNA-1273 and one BNT162b2 bivalent vaccine in a cohort of patients with CVID and XLA.
Immunodeficiency
Immune profiling reveals umbilical cord blood mononuclear cells from South India display an IL-8 dominant, CXCL-10 deficient polyfunctional monocyte response to pathogen-associated molecular patterns that is distinct from adult blood cells
Immune profiling analysis was conducted on umbilical cord blood (CB; n=21) and adult peripheral blood mononuclear cells (PBMC; n=14) from India. Six pathogen-associated molecular patterns (PAMPs) were used to stimulate immune responses. Differential secreted cytokine expression analysis, relative to no stimulation control, as measured by a multiplex ELISA, revealed PAMP-specific distinct effectors patterns. The predominant cellular source of IL-8/IL-6/TNF-a/IL-1ß in both CB and PBMC, as determined by intracellular cytokine staining, was polyfunctional monocytes and IFN-? /IL-2/IL-17/IL-10 from innate lymphocytes.
Infection/Infectious Disease
NKG2C+CD57+ natural killer cells with senescent features are induced during cutaneous leishmaniasis and accumulate in patients with lesional healing impairment
Natural killer (NK) cells include different subsets with diverse effector capacities that are poorly understood in the context of parasitic diseases. This study provides a broad understanding of the NK cell biology during Leishmania infection and reinforces the role of senescent cells in the adverse clinical outcomes of cutaneous leishmaniasis.
Immunity & Ageing
The immunoreactive signature of monocyte-derived dendritic cells from patients with Down syndrome
Excessive immunoreactivity and oxidative stress are associated with aging in patients with Down syndrome; however, their immunological profiles remain elusive. Gene expression profiling in this study illustrates that hyperactive toll-like receptor and mitochondrial oxidative phosphorylation pathways configure the immunoreactive signature in monocyte-derived dendritic cells from patients with Down syndrome.