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SM ANTIBODY

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Original price was: ₹2,666.67.Current price is: ₹1,600.00.

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Hypro Diagnostics, in the field of autoimmune disorders, plays a crucial role in understanding small nuclear ribonucleoprotein (snRNP) particles, also known as spliceosomes. These particles, composing of small RNA molecules and associated proteins, involve snRNPs with an Sm core and specific proteins tailored to each particle type. The well-characterized RNP autoantigens are predominantly situated in U1 snRNP complexes, essential for pre-mRNA splicing. Notably, Sm epitopes, found on snRNP-associated proteins (B, B1, D, E/F, and G), exhibit significant reactivity, particularly within D and B/B1. Hypro Diagnostics recognizes the association of anti-Sm antibodies with RNP proteins, a prevalent feature in approximately 20-30% of systemic lupus erythematosus (SLE) cases. While other autoimmune conditions like mixed connective tissue disease (MCTD) and progressive systemic sclerosis may display anti-RNP antibodies without anti-Sm, the latter was initially deemed highly specific for SLE. However, the specificity may vary across populations, with a higher incidence observed in black Americans with SLE. Hypro Diagnostics acknowledges the potential association of anti-Sm with milder forms of SLE, characterized by reduced renal or CNS involvement, but an increased prevalence of Raynaud’s phenomenon and sclerodactyly.

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