Berger S, Vongaraya N Insulin response to ingested protein in diabetes. Diabetes. 1966 May;15(5):303-6.
Calbet JA, MacLean DA Plasma glucagon and insulin responses depend on the rate of appearance of amino acids after ingestion of different protein solutions in humans. J Nutr. 2002 Aug;132(8):2174-82.
Chen Q, Reimer RA Dairy protein and leucine alter GLP-1 release and mRNA of genes involved in intestinal lipid metabolism in vitro. Nutrition. 2009 Mar;25(3):340-9. doi: 10.1016/j.nut.2008.08.012. Epub 2008 Nov 26.
Frid AH, Nilsson M, Holst JJ, Björck IM Effect of whey on blood glucose and insulin responses to composite breakfast and lunch meals in type 2 diabetic subjects. Am J Clin Nutr. 2005 Jul;82(1):69-75.
Gannon MC, Nuttall FQ Amino acid ingestion and glucose metabolism--a review. IUBMB Life. 2010 Sep;62(9):660-8. doi: 10.1002/iub.375. Review.
Gunnerud U, Holst JJ, Östman E, Björck I The glycemic, insulinemic and plasma amino acid responses to equi-carbohydrate milk meals, a pilot- study of bovine and human milk. Nutr J. 2012 Oct 12;11:83. doi: 10.1186/1475-2891-11-83.
Layman DK The role of leucine in weight loss diets and glucose homeostasis. J Nutr. 2003 Jan;133(1):261S-267S. Review.
Nilsson M, Holst JJ, Björck IM Metabolic effects of amino acid mixtures and whey protein in healthy subjects: studies using glucose-equivalent drinks. Am J Clin Nutr. 2007 Apr;85(4):996-1004.
Nilsson M, Stenberg M, Frid AH, Holst JJ, Björck IM Glycemia and insulinemia in healthy subjects after lactose-equivalent meals of milk and other food proteins: the role of plasma amino acids and incretins. Am J Clin Nutr. 2004 Nov;80(5):1246-53.
Pal S, Ellis V The acute effects of four protein meals on insulin, glucose, appetite and energy intake in lean men. Br J Nutr. 2010 Oct;104(8):1241-8. doi: 10.1017/S0007114510001911. Epub 2010 May 11.
Pedroso JA, Zampieri TT, Donato J Jr Reviewing the Effects of L-Leucine Supplementation in the Regulation of Food Intake, Energy Balance, and Glucose Homeostasis. Nutrients. 2015 May 22;7(5):3914-37. doi: 10.3390/nu7053914. Review.
Tuma P, Gojda J Rapid determination of branched chain amino acids in human blood plasma by pressure-assisted capillary electrophoresis with contactless conductivity detection. Electrophoresis. 2015 Aug;36(16):1969-75. doi: 10.1002/elps.201400585. Epub 2015 Apr 8.
Tuma P Rapid determination of globin chains in red blood cells by capillary electrophoresis using INSTCoated fused-silica capillary. J Sep Sci. 2014 Apr;37(8):1026-32. doi: 10.1002/jssc.201400044. Epub 2014 Mar 13.
Wahren J, Felig P, Hagenfeldt L Effect of protein ingestion on splanchnic and leg metabolism in normal man and in patients with diabetes mellitus. J Clin Invest. 1976 Apr;57(4):987-99.
Yang J, Chi Y, Burkhardt BR, Guan Y, Wolf BA Leucine metabolism in regulation of insulin secretion from pancreatic beta cells. Nutr Rev. 2010 May;68(5):270-9. doi: 10.1111/j.1753-4887.2010.00282.x. Review.
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.