R
Richard E. Reitz
Researcher at Quest Diagnostics
Publications - 69
Citations - 3441
Richard E. Reitz is an academic researcher from Quest Diagnostics. The author has contributed to research in topics: Mass spectrometry & Vitamin D and neurology. The author has an hindex of 26, co-authored 69 publications receiving 3167 citations.
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Journal ArticleDOI
Vitamin D2 Is as Effective as Vitamin D3 in Maintaining Circulating Concentrations of 25-Hydroxyvitamin D
Michael F. Holick,Rachael M. Biancuzzo,Tai C. Chen,Ellen K. Klein,Azzie Young,Douglass Bibuld,Richard E. Reitz,Wael A. Salameh,Allen Ameri,Andrew D. Tannenbaum +9 more
TL;DR: A 1000 IU dose of vitamin D2 daily was as effective as 1000 IU vitamin D3 in maintaining serum 25-hydroxyvitamin D levels and did not negatively influence serum 25+/-7.7 ng/ml, therefore, vitamin D 2 is equally as effective in maintaining 25-Hydroxyv vitamin D status.
Journal ArticleDOI
Direct Determination of Lipoprotein Particle Sizes and Concentrations by Ion Mobility Analysis
Michael P. Caulfield,Shuguang Li,Gloria Kwangja Lee,Patricia J. Blanche,Wael A. Salameh,W. Henry Benner,Richard E. Reitz,Ronald M. Krauss +7 more
TL;DR: A new gas-phase differential electrophoretic macromolecular mobility-based method (ion mobility, or IM) for direct quantification of lipop protein particles, from small, dense HDL to large, buoyant, very-low-density lipoprotein (VLDL).
Journal ArticleDOI
Differential Effects of Metformin and Troglitazone on Cardiovascular Risk Factors in Patients With Type 2 Diabetes
Neelima V. Chu,Alice P.S. Kong,Dennis Kim,Debra Armstrong,Sunita Baxi,Reena Deutsch,Michael P. Caulfield,Sunder Mudaliar,Richard E. Reitz,Robert R. Henry,Robert R. Henry,Peter D. Reaven +11 more
TL;DR: For patients with type 2 diabetes in whom maximal sulfonylurea therapy failed, the addition of the insulin sensitizer troglitazone seemed to have greater benefits on several traditional and novel CVRF than metformin therapy.
Journal ArticleDOI
Fortification of orange juice with vitamin D2 or vitamin D3 is as effective as an oral supplement in maintaining vitamin D status in adults
Rachael M. Biancuzzo,Azzie Young,Douglass Bibuld,Mona H. Cai,Michael Winter,Ellen K. Klein,Allen Ameri,Richard E. Reitz,Wael A. Salameh,Tai C. Chen,Michael F. Holick +10 more
TL;DR: Vitamin D(2) and vitamin D(3) are equally bioavailable in orange juice and capsules.
Journal ArticleDOI
Identification of four gene variants associated with myocardial infarction.
Dov Shiffman,Stephen G. Ellis,Charles M. Rowland,Mary J. Malloy,May M. Luke,Olga Iakoubova,Clive R. Pullinger,June Cassano,Bradley E. Aouizerat,Raymond G. Fenwick,Richard E. Reitz,Joseph J. Catanese,Diane U. Leong,Christian Zellner,John J. Sninsky,Eric J. Topol,James J. Devlin,John P. Kane +17 more
TL;DR: It is found that four gene variants were associated with MI (P<.05; false-discovery rate <10%) and had the same risk allele as in the first two studies, which could lead to a better understanding of MI pathophysiology and improved patient risk assessment.