Atorvastatin but not L-arginine improves endothelial function in type I diabetes mellitus: a double-blind study
Michael J. Mullen, MRCP*,
David Wright, PhD ,
Ann E. Donald, AVT*,
Sara Thorne, MD, MRCP*,
Hyeyoung Thomson, BSc* and
John E. Deanfield, FRCP*
* Vascular Physiology Unit, Great Ormond Street Hospital for Children, London, UK
Department of Statistical Science, University College London, Gower Street, London, UK

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Figure 1 Study protocol. Subjects were randomized to either placebo, L-arginine (7 g twice daily), atorvastatin (40 mg/day) or combination therapy. Vascular function was assessed noninvasively at baseline and after six weeks of treatment.
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