Abstract:
:We have studied the effect of low sulfate concentrations on the glycosaminoglycan synthesis in rat patellar cartilage in vivo as well as in vitro. The oral administration of 200 mg/kg paracetamol to male Wistar rats resulted in a significant reduction of the serum sulfate concentration. Reduced serum sulfate availability resulted in a 34% decrease of glycosaminoglycan synthesis in patellar cartilage. This is due to sulfate depletion since paracetamol had no direct effects on glycosaminoglycan synthesis and a slight but significant inhibitory effect on the catabolism of radiolabeled glycosaminoglycans in vitro. The glycosaminoglycans synthesized at low sulfate concentrations in vivo were similar to the glycosaminoglycans synthesized at physiological sulfate concentrations. Studying the effect of sulfate availability in vitro on glycosaminoglycan synthesis in patellar cartilage we found that incubation of rat patellae in medium containing less than 0.5 mM inorganic sulfate led to a decreased sulfate incorporation. The use of potential sulfate decreasing drugs can lead to inhibition of glycosaminoglycan synthesis. This argues for a reconsideration of the use of these drugs in patients with already dysfunctioning cartilage metabolism as in rheumatoid arthritis and osteoarthrosis.
journal_name
Biochem Pharmacoljournal_title
Biochemical pharmacologyauthors
van der Kraan PM,de Vries BJ,Vitters EL,van den Berg WB,van de Putte LBdoi
10.1016/0006-2952(88)90401-7subject
Has Abstractpub_date
1988-10-01 00:00:00pages
3683-90issue
19eissn
0006-2952issn
1873-2968pii
0006-2952(88)90401-7journal_volume
37pub_type
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更新日期:2014-08-15 00:00:00
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