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Afferent lymph vessels entering the popliteal lymph nodes of sheep were infused with [3H]acetyl-labelled hyaluronan [HA; Mr of (0.85-1.2) x 10(5)] for up to 4 h at a rate of 17.4-23.1 micrograms/h. As much as 22.8 micrograms (99%) of infused [3H]HA was taken up by the node per h and degraded. During this interval it was observed that infused HA polymers of(More)
The effect of cycloheximide on chondroitin sulphate biosynthesis was studied in bovine articular cartilage maintained in culture. Addition of 0.4 mM-cycloheximide to the culture medium was followed, over the next 4h, by a first-order decrease in the rate of incorporation of [35S]sulphate into glycosaminoglycan (half-life, t 1/2 = 32 min), which is(More)
Addition of actinomycin D (or cordycepin, an alternative inhibitor of RNA synthesis) to cartilage cultures resulted in a first-order decrease in the rate of incorporation of [35S]sulphate into proteoglycan (half-life = 7.5 +/- 1.1 h). Addition of 1.0 mM-benzyl beta-D-xyloside relieved the initial inhibition of glycosaminoglycan synthesis induced by(More)
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