This is from the website:
http://www.edoc.co.za/medilink/actives/669.html
Tetracyclines have anti-anabolic action which may increase blood urea. Caution in patients with renal insufficiency …monitoring of renal function is advisable. Frail and elderly patients are susceptible to hepatotoxic and anti-anabolic effects of tetracyclines.
So, does this prove that minocyline will cause catabolism if taken in regular doses?