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Human Body & Health

If epidermal keratinocytes chronically overproduce keratin intermediate filaments but show reduced cornification enzyme activity, which consequence follows?

A)Reduced stratum corneum thickness
B)Impaired skin barrier formation
C)Increased melanocyte proliferation rate
D)Enhanced wound contraction velocity

💡 Explanation

Impaired skin barrier formation occurs because keratin intermediate filament overproduction interferes with proper cross-linking and lipid organization, whereas reduced cornification further diminishes the formation of the protective stratum corneum; therefore the skin barrier function is weakened, rather than stratum corneum being thinner or wound healing enhanced.

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