Halvor N. Christensen

1955-1986 Biological Chemistry University of Michigan, Ann Arbor, Ann Arbor, MI 
"Halvor N. Christensen"

(1915 - 2003)
Halvor Niels Christensen, Ph.D., professor emeritus and former chair of the Department of Biological Chemistry, died after several weeks of illness in La Jolla, California, on October 2, one day after his birthday. A distinguished leader and educator, Christensen was internationally recognized for his work in the area of amino acid transport in physiological and pathological conditions.

After completing his doctoral studies at Harvard University in 1940, Christensen held many distinguished positions, including director of the Department of Research Chemistry at Children's Medical Center in Boston, and professor and chair of the Department of Biochemistry and Nutrition at Tufts University. He served as chair of the U-M Department of Biological Chemistry from 1956 until 1970; his leadership helped the department achieve its current stature. He continued his research and teaching for another 16 years after stepping down as chair, retiring in 1986. Christensen and his wife, Mary, then moved to La Jolla, where he served as an adjunct professor in pediatrics at the University of California in San Diego from 1989 to 1999.

His wife preceded Christensen in death in June 2003. They are survived by three children, Hugh and Carl Christensen and Karen Christensen Gray, as well as two grandchildren.
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A. Baird Hastings grad student 1940 Harvard
 (Phosphatides: Contaminants of Phosphatides, Phosphatides and Ionic Activities, Synthesis of Compounds Related to Cephalins)
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Christensen HN, Kilberg M. (1995) Hepatic amino acid transport primary to the urea cycle in regulation of biologic neutrality Nutrition Reviews. 53: 74-76
Christensen HN. (1995) New insights into intravenous peptide metabolism Nutrition Reviews. 53: 100-102
Christensen HN, Van Winkle LJ. (1995) Ontogeny of transport system for cationic amino acids in the placenta Nutrition Reviews. 53: 40-43
Christensen HN. (1994) Is PQQ a significant nutrient in addition to its role as a therapeutic agent in the higher animal? Nutrition Reviews. 52: 24-25
Christensen HN, Albritton LM, Kakuda DK, et al. (1994) Gene-product designations for amino acid transporters. The Journal of Experimental Biology. 196: 51-7
Christensen HN, Greene AA, Kakuda DK, et al. (1994) Special transport and neurological significance of two amino acids in a configuration conventionally designated as D. The Journal of Experimental Biology. 196: 297-305
Christensen HN. (1993) Amino acid nutrition: A two-step absorptive process Nutrition Reviews. 51: 95-100
Christensen HN. (1993) Riboflavin can protect tissues from oxidative injury Nutrition Reviews. 51: 149-150
de Céspedes C, Thoene JG, Lowler K, et al. (1992) Leucine and tissue distribution of bulky and small neutral amino acids in rats: Dissociation between transport and insulin-mediated effects Journal of Inherited Metabolic Disease. 15: 145-154
Christensen HN. (1992) What is the physiological origin of free D-amino acids in mammals? Nutrition Reviews. 50: 294-295
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