Isolation of a nanobody specific to the PstS-1 protein and evaluation of its immunoreactivity with structural components of Mycobacterium tuberculosis granuloma

Mycobacterium tuberculosis (Mtb) causes infectious granulomatous disease tuberculosis (TB), and existing in vitro TB-diagnosis is insensitive for extrapulmonary TB (EPTB) as well as paucibacillary TB due to low bacillary load; therefore, alternative no…

Antiphospholipid antibodies induce endothelial procoagulant activity and release of extracellular vesicles independently of a second hit

IntroductionAntiphospholipid antibodies (aPLs) can promote thrombosis in vivo, but evidence from both animal models and clinical data suggests that they act as a ‘first hit’ and may require a ‘second hit’, typically an inflammatory stimulus, to induce …

Native C3 is activated without proteolytic cleavage by transformation to C3(H2O) on phospholipid-scrambled cell membranes

Tick-over of C3 to fluid-phase C3(H2O) is considered the initiator of the alternative pathway by mediating random depositing of C3b on target surfaces. This slow mechanism does not explain the specificity and rapid activation of the alternative pathway…

CD48, CD69, and TIGIT as diagnostic biomarkers for primary Sjögren’s syndrome: an integrated machine learning and multi-disease discrimination validation study

BackgroundPrimary Sjögren’s syndrome (pSS) is a chronic systemic autoimmune disorder. However, current diagnostic methods remain limited, necessitating the exploration of non-invasive diagnostic markers with higher specificity.MethodsThis study integra…

Ameliorative effects and mechanism of Panax notoginseng extract on ulcerative colitis mice based on a multi-omics strategy

IntroductionAs a complex and persistent inflammatory bowel disease, the onset and progression of ulcerative colitis (UC) are closely associated with intestinal microbiota dysbiosis, host metabolic imbalance, and impaired intestinal barrier function. Th…

A diet-induced obese and diabetic host phenotype reduces mosquito ZIKV infections and remodels gut metabolism

IntroductionArbovirus infections, including dengue, Zika, and chikungunya, constitute significant global health threats. The epidemiology of these diseases is closely tied to the biology and ecology of the mosquito Aedes aegypti, particularly regardin…

How conformational changes near the F pocket of MHC class I proteins mediate chaperone assisted peptide loading

BackgroundEfficient recognition of antigenic peptides bound to major histocompatibility complex (MHC) class I molecules on the surface of cells by immune cells requires sufficiently stable peptide-MHC I complexes. Antigenic peptides of 8–10 amino acids…

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