YONSEI MEDICAL JOURNAL, cilt.43, sa.4, ss.435-440, 2002 (SCI-Expanded, Scopus)
Secondary osteoporosis is a feature of rheumatoid arthritis (RA). In recent years, several attempts have been made to develop specific markers for monitoring connective tissue metabolism in arthritic diseases. Our purpose, in this study was to assess pyridinium crosslinks (PYD and DPYD) excretion in relation to the activity of RA (changes related to sulphasalazine treatment).