You are here

Tim R. Nagy, Ph.D.

Professor
Dept. of Nutrition Sciences
School of Health Professions
Office Address: WEBB 419
Phone: 205-934-4088
E-mail: tnagy@uab.edu
Curriculum Vitae

Dr. Nagy is a Professor of Nutrition Sciences and Associate Director of the UAB Nutrition Obesity Research Center. He directs the UAB Small Animal Phenotyping Laboratory that is a resource for the UAB Nutrition Obesity Research Center, the UAB Diabetes Research Center, and the UAB Nathan Shock Center of Excellence in the Basic Biology of Aging. Dr. Nagy’s career research focus has targeted the role of energetics in the regulation of body weight since his doctoral research studies in 1987. His research has spanned studies on unique animal models of energy balance, ranging from fruitflies, zebrafish, snakes, lemmings, and mice, to studies of energy balance and body weight regulation in humans. In order to conduct many of these studies, Dr. Nagy had to develop and validate methods for the non-invasive determination of body composition. Dr. Nagy worked with two imaging companies to develop and validate dual-energy X-ray absorptiometry for small animal research. In addition to the validation of DXA for animals, he has validated their use in the pediatric population. Dr. Nagy has validated and published on the use of μCT and quantitative magnetic resonance (QMR), being the first to use this latter technique to measure in vivo body composition of fruitflies and zebrafish. He has developed MRI methods for the in vivo determination of brown adipose in mice. He is considered a leading authority in the area of body composition and energy balance in both animal models and humans.

Education:

Indiana University of Pennsylvania, Indiana, PA
BS, Biology, 1984

Indiana University of Pennsylvania, Indiana, PA
MS, Biology, 1988

University of Utah, Salt Lake City, UT
PhD, Biology, 1992

Post-Graduate Training:

University of Delaware, Newark, DE
Postdoctoral Fellow, Endocrinology

University of Alabama at Birmingham
Postdoctoral Fellow, Energy Metabolism and Body Composition, 1996

Research Description:

Dr. Nagy is a Professor of Nutrition Sciences. He directs the Small Animal Phenotyping Laboratory that a subcore of the UAB  Nutrition Obesity Research Center Animal Models Core. Dr. Nagy’s research is focused on three areas: (1) the regulation of body weight, (2) the development and validation of methods for phenotyping small animals, and (3) the link among body fat, caloric restriction and cancer.

Dr. Nagy’s studies on the regulation of body weight have utilized both humans and animal models. Currently his studies are focused on animal models to better understand the mechanisms regulating energy expenditure and thus body weight. These studies include antipsychotic drug-induced weight gain, the role of uncoupling proteins, and the role of dairy in weight loss and bone health.

During Dr. Nagy’s studies on the regulation of energy expenditure using animal models, he realized the need to improve the measurement of body composition in small animals, especially in vivo methods. Thus, he worked with two medical imaging companies to adapt human peripheral dual-energy X-ray absorptiometers (DXA) for use with mice. Dr. Nagy was the first to validate and publish on the use of DXA for measurements of fat, lean, and bone in mice. He has extended his interest in imaging techniques to that of peripheral quantitative computed tomography (pQCT). His studies have demonstrated that pQCT can be used to determine relative body fat and the relative fat content of organs in mice and rats. Recently, Dr. Nagy acquired a micro-computed tomography instrument and is currently validating its use for both hard and soft tissue. These non-invasive techniques are extremely useful and important tools for bone and obesity researchers using animal models in their research.

The final area of research interest is the link among body fat, caloric restriction, and cancer. Dr. Nagy has developed a mouse model in which energy intake can be held constant while body fat is modified by varying energy expenditure using ambient temperature. Thus multiple groups of mice, whose body fat are vastly different but food intake is the same, can be studied. This line of research will determine the independent effects of body fat on cancer.

Publications

  1. The translation of age-related body composition findings from rodents to humans 2019
    10.1038/s41430-018-0324-6 
  2. Fat mass compared to four body condition scoring systems in the Asian elephant (Elephas maximus) 2019
    10.1002/zoo.21508 
  3. Mks6 mutations reveal tissue-and cell type-specific roles for the cilia transition zone 2019
    10.1096/fj.201801149R 
  4. Weight Cycling Increases Longevity Compared with Sustained Obesity in Mice 2018
    10.1002/oby.22290
  5. No Significant Effect of Maternal Perception of the Food Environment on Reproductive Success or Pup Outcomes in C57BL/6J Mice 2018
    10.1002/oby.22141 
  6. Adiposity and Reproductive Cycling Status in Zoo African Elephants 2018
    10.1002/oby.22046 
  7. Erratum to: Adiposity and Reproductive Cycling Status in Zoo African Elephants: Elephant Body Composition and Cyclicity Status (Obesity, (2018), 26, 1, (103-110), 10.1002/oby.22046) 2018
    10.1002/oby.22123 
  8. High-intensity interval training and calorie restriction promote remodeling of glucose and lipid metabolism in diet-induced obesity 2017
    10.1152/ajpendo.00445.2016 
  9. High-intensity interval training and calorie restriction promote remodeling of glucose and lipid metabolism in diet-induced obesity. 2017
    10.1152/ajpendo.00445.2016 
  10. Validation of Dual-energy X-ray Absorptiometry to Predict Body Composition of Channel Catfish, Ictalurus punctatus 2017
    10.1111/jwas.12324 
  11. Maternal western diet increases adiposity even in male offspring of obesityresistant rat dams: Early endocrine risk markers 2016
    10.1152/ajpregu.00023.2016 
  12. Observational research rigour alone does not justify causal inference 2016
    10.1111/eci.12681 
  13. Validation of Body Condition Indices and Quantitative Magnetic Resonance in Estimating Body Composition in a Small Lizard 2016
    10.1002/jez.2053 
  14. Increased trabecular bone and improved biomechanics in an osteocalcin-null rat model created by CRISPR/Cas9 technology 2016
    10.1242/dmm.025247 
  15. Comparison of the Lunar Prodigy and iDXA Dual-Energy X-ray Absorptiometers for Assessing Total and Regional Body Composition 2016
    10.1016/j.jocd.2015.06.003 
  16. High-Intensity Interval Training with Energy Restriction Preserves Lean Tissue and Improves Glucose Tolerance in Obesity: 3369 Board #2 June 3, 3: 15 PM - 5: 15 PM. 2016
    10.1249/01.mss.0000487841.34966.34 
  17. Relationships between Rodent White Adipose Fat Pads and Human White Adipose Fat Depots. 2016
    10.3389/fnut.2016.00010 
  18. Aging and energetics' 'Top 40' future research opportunities 2010-2013 2014
    10.12688/f1000research.5212.1 
  19. Dietary acrylamide and human cancer: A systematic review of literature 2014
    10.1080/01635581.2014.916323 
  20. Carnitine Palmitoyltransferase 1b Deficiency Protects Mice from Diet-Induced Insulin Resistance. 2014
    10.4172/2155-6156.1000361 
  21. S-(-)equol producing status not associated with breast cancer risk among low isoflavone-consuming US postmenopausal women undergoing a physician-recommended breast biopsy 2014
    10.1016/j.nutres.2013.12.002 
  22. Variations in body weight, Food Intake and body composition after long-term high-fat diet feeding in C57BL/6J mice 2014
    10.1002/oby.20811 
  23. Variations in body weight, food intake, and body composition after long-term high-fat diet feeding in C57BL/6J mice 2014
    10.1002/oby.20811 
  24. Centrally administered urocortin 2 decreases gorging on high-fat diet in both diet-induced obesity-prone and-resistant rats 2013
    10.1038/ijo.2013.22 
  25. Measurement of interscapular brown adipose tissue of mice in differentially housed temperatures by chemical-shift-encoded water-fat MRI 2013
    10.1002/jmri.24138 
  26. Apolipoprotein e gene polymorphism influences aggressive behavior in prostate cancer cells by deregulating cholesterol homeostasis 2013
    10.3892/ijo.2013.2057 
  27. Dietary protein source influence on body size and composition in growing zebrafish 2013
    10.1089/zeb.2012.0864 
  28. Effects of risperidone on energy balance in female C57BL/6J mice 2013
    10.1002/oby.20350 
  29. Racial differences in adiponectin and leptin in healthy premenopausal women 2013
    10.1007/s12020-012-9797-6 
  30. Leptin resistance is a secondary consequence of the obesity in ciliopathy mutant mice 2013
    10.1073/pnas.1210192110 
  31. Noninvasive measurements of body composition and body water via quantitative magnetic resonance, deuterium water, and dual-energy x-ray absorptiometry in awake and sedated dogs 2013
    10.2460/ajvr.74.5.733 
  32. Noninvasive measurements of body composition and body water via quantitative magnetic resonance, deuterium water, and dual-energy x-ray absorptiometry in cats 2013
    10.2460/ajvr.74.5.721 
  33. Atypical antipsychotic drugs inhibit trabecular bone accrual in C57BL/6J mice. 2013
  34. Chemical-shift water-fat MRI of white adipose depots: inability to resolve cell size differences. 2013
  35. Mammography utilization among Black and White Medicare beneficiaries in high breast cancer mortality US counties. 2013
    10.1007/s10552-013-0295-9 
  36. Intra-abdominal adipose tissue is independently associated with sex-hormone binding globulin in premenopausal women 2012
    10.1038/oby.2011.375 
  37. Long-term effects of high-fat or high-carbohydrate diets on glucose tolerance in mice with heterozygous carnitine palmitoyltransferase-1a deficiency 2011
    10.1038/nutd.2011.11 
  38. Results of extremely-low-birth-weight infants randomized to receive extra enteral calcium supply 2011
    10.1097/MPG.0b013e3182187ecd 
  39. Reduced mitogenicity of sera following weight loss in premenopausal women 2011
    10.1080/01635581.2011.594209 
  40. Chronic exposure to a high-fat diet induces hepatic steatosis, impairs nitric oxide bioavailability, and modifies the mitochondrial proteome in mice 2011
    10.1089/ars.2010.3395 
  41. No compelling evidence that sibutramine prolongs life in rodents despite providing a dose-dependent reduction in body weight 2011
    10.1038/ijo.2010.247 
  42. Quantification of Absolute Fat Mass by Magnetic Resonance Imaging: a Validation Study against Chemical Analysis. 2011
  43. Dietary strontium increases bone mineral density in intact zebrafish (Danio rerio): A potential model system for bone research 2010
    10.1089/zeb.2010.0654 
  44. Role of phytoestrogens in cancer therapy 2010
    10.1055/s-0030-1250074 
  45. Identification of brown adipose tissue in mice with fat-water IDEAL-MRI 2010
    10.1002/jmri.22162 
  46. The effect of mannan oligosaccharide supplementation on body weight gain and fat accrual in C57Bl/6J mice 2010
    10.1038/oby.2009.308 
  47. Mild calorie restriction induces fat accumulation in female C57BL/6J mice 2010
    10.1038/oby.2009.312 
  48. Calorie restriction: What recent results suggest for the future of ageing research 2010
    10.1111/j.1365-2362.2010.02276.x 
  49. The Role of European Genetic Admixture in the Etiology of the Insulin Resistance Syndrome in Children: Are the Effects Mediated by Fat Accumulation? 2010
    10.1016/j.jpeds.2010.01.045 
  50. Therapeutic potential of genetically modified adult stem cells for osteopenia 2010
    10.1038/gt.2009.116 
  51. High-fat diet exacerbates inflammation and cell survival signals in the skin of ultraviolet B-irradiated C57BL/6 mice 2009
    10.1016/j.taap.2009.09.003 
  52. Validation of quantitative magnetic resonance (QMR) for determination of body composition in rats. 2009
  53. TGF-Β1-induced migration of bone mesenchymal stem cells couples bone resorption with formation 2009
    10.1038/nm.1979 
  54. Risperidone alters food intake, core body temperature, and locomotor activity in mice 2009
    10.1016/j.physbeh.2008.11.011 
  55. Clinical device-related article micro-computed tomographic analysis of bone healing subsequent to graft placement 2009
    10.1002/jbm.b.31232 
  56. Validation of quantitative magnetic resonance for the determination of body composition of mice. 2009
  57. Effect of exercise and calorie restriction on biomarkers of aging in mice 2008
    10.1152/ajpregu.00890.2007 
  58. Effect of dairy supplementation on body composition and insulin resistance in mice 2007
    10.1016/j.nut.2007.08.004 
  59. Disruption of Intraflagellar Transport in Adult Mice Leads to Obesity and Slow-Onset Cystic Kidney Disease 2007
    10.1016/j.cub.2007.08.034 
  60. Erratum: SIRT1 is significantly elevated in mouse and human prostate cancer (Cancer Research (2007) 67, (6612-6618)) 2007
    10.1158/0008-5472.CAN-67-17-COR2 
  61. Feeding microstructure in diet-induced obesity susceptible versus resistant rats: Central effects of urocortin 2 2007
    10.1113/jphysiol.2007.138867 
  62. SIRT1 is significantly elevated in mouse and human prostate cancer (vol 67, pg 6612, 2007) 2007
  63. SIRT1 is significantly elevated in mouse and human prostate cancer 2007
    10.1158/0008-5472.CAN-07-0085 
  64. No effect of dietary fat on short-term weight gain in mice treated with atypical antipsychotic drugs 2007
    10.1038/sj.ijo.0803533 
  65. The effect of class A scavenger receptor deficiency in bone 2007
    10.1074/jbc.M608552200 
  66. Cancer progression in the transgenic adenocarcinoma of mouse prostate mouse is related to energy balance, body mass, and body composition, but not food intake 2007
    10.1158/0008-5472.CAN-06-1244 
  67. Urocortin 2 modulates glucose utilization and insulin sensitivity in skeletal muscle 2006
    10.1073/pnas.0607337103 
  68. Dual-energy X-ray absorptiometry analysis of implants in rat tibiae 2005
    10.1097/01.id.0000173642.43360.70 
  69. Phenotypic effects of calorie restriction and insulin-like growth factor-1 treatment on body composition and bone mineral density of C57BL/6 mice: Implications for cancer prevention 2005
  70. Antipsychotic drug-induced weight gain: Development of an animal model 2005
    10.1038/sj.ijo.0802928 
  71. Comparison of software versions for body composition analysis using the PIXImus dual-energy X-ray absorptiometer. 2005
  72. AZT enhances osteoclastogenesis and bone loss 2004
    10.1089/0889222041217482 
  73. Molecules Mimicking Smad1 Interacting with Hox Stimulate Bone Formation 2004
    10.1074/jbc.M312731200 
  74. Activation of the Retinoid X Receptor Suppresses Appetite in the Rat 2004
    10.1210/en.2003-0907 
  75. Quantitative Trait Loci Specifying the Response of Body Temperature to Dietary Restriction 2004
  76. Measurement of Body and Liver Fat in Small Animals Using Peripheral Quantitative Computed Tomography. 2004
  77. Osteogenic differentiation of recombinant adeno-associated virus 2-transduced murine mesenchymal stem cells and development of an immunocompetent mouse model for ex vivo osteoporosis gene therapy 2004
    10.1089/hum.2004.15.1197 
  78. Role of UCP2 and UCP3 in nutrition and obesity 2004
    10.1016/j.nut.2003.09.024 
  79. Ucp3 expression during weight gain and loss, cold exposure, and fasting in the collared lemming 2004
    10.1038/oby.2004.209 
  80. Weight change affects serum leptin and corticosterone in the collared lemming 2004
    10.1016/j.ygcen.2003.11.011 
  81. HIV Protease Inhibitor Ritonavir Induces Lipoatrophy in Male Mice 2003
    10.1089/088922203771881248 
  82. Osteoclast Apoptosis: The Role of Fas in Vivo and in Vitro 2003
    10.1210/en.2003-0296 
  83. Non-invasive measure of body composition of snakes using dual-energy X-ray absorptiometry 2003
    10.1016/S1095-6433(03)00176-4 
  84. The effects of quetiapine (Seroquel) on food intake and body weight in mice. 2003
  85. Mice lacking phosphatidylinositol transfer protein-α exhibit spinocerebellar degeneration, intestinal and hepatic steatosis, and hypoglycemia 2003
    10.1074/jbc.M303591200 
  86. Corticotropin-releasing factor receptor-2-deficient mice display abnormal homeostatic responses to challenges of increased dietary fat and cold 2003
    10.1210/en.2002-0091 
  87. Strain variation in the response of body temperature to dietary restriction 2003
    10.1016/S0047-6374(03)00003-4 
  88. Effects of ziprasidone on body weight and food intake in female C57B7/6J mice 2003
  89. Differential effects of a centrally acting fatty acid synthase inhibitor in lean and obese mice (vol 99, pg 1921, 2002) 2002
    10.1073/pnas.122187199 
  90. Erratum: Differential effects of a centrally acting fatty acid synthase inhibitor in lean and obese mice (Proceedings of the National Academy of Sciences of the United States of America (February 19, 2002) 99:4 (1921-1925)) 2002
  91. Measurement and validation of in vivo liver fat in a small rodent using peripheral quantitative computed tomography (pQCT). 2002
  92. Extraction and purification of olanzapine from Zyprexa tablets. 2002
  93. Resistin and adiponectin expression in lean and obese Zucker rats 2002
  94. Differential effects of a centrally acting fatty acid synthase inhibitor in lean and obese mice 2002
    10.1073/pnas.042683699 
  95. Body composition in a seasonal model of obesity: Longitudinal measures and validation of DXA 2002
    10.1038/oby.2002.160 
  96. Effect of group vs. single housing on phenotypic variance in C57BL/6J mice 2002
    10.1038/oby.2002.57 
  97. Effects of energy expenditure and Ucp1 on photoperiod-induced weight gain in collared lemmings 2002
    10.1038/oby.2002.73 
  98. Estradiol may limit lipid oxidation via Cpt 1 expression and hormonal mechanisms 2002
    10.1038/oby.2002.26 
  99. Evaluation of liver fatty acid oxidation in the leptin-deficient obese mouse 2002
    10.1006/mgme.2002.3298 
  100. Determination of lean, fat, and ash mass of snakes using dual-energy X-ray absorptiometry (DXA). 2001
  101. Beacon and uncoupling protein expression in a seasonal model of obesity. 2001
  102. Effect of group- vs single-housing on body composition of mice. 2001
  103. Precision of dual-energy X-ray absorptiometry for determining body composition of rats 2001
  104. Relative body composition of mice as measured by peripheral quantitative computed tomography 2001
  105. Effect of feeding on circulating micronutrient concentrations in the Burmese python (Python molurus) 2001
    10.1016/S1095-6433(01)00331-2 
  106. Effect of feeding on circulating micronutrient concentrations in Burmese pythons. 2001
  107. Erratum: Visceral fat, insulin sensitivity and upids in prepulbertal childre. (Diabetes 48: 1515-1521, 1999) 2001
  108. Visceral fat, insulin sensitivity, and lipids in prepubertal children. (vol 48, pg 1515, 1999) 2001
  109. Validation of peripheral dual-energy X-ray absorptiometry for the measurement of bone mineral in intact and excised long bones of rats 2001
    10.1359/jbmr.2001.16.9.1682 
  110. Leptin in postmenopausal women: Influence of hormone therapy, insulin, and fat distribution 2000
    10.1210/jc.85.5.1770 
  111. Postprandial response of plasma lipids and the hormone leptin in pythons. 2000
  112. Transgenic studies of fatty acid oxidation gene expression in nonobese diabetic mice 2000
  113. Do adaptive changes in metabolic rate favor weight regain in weight-reduced individuals? An examination of the set-point theory 2000
  114. Corticosterone: Effects on body weight and composition in a model of seasonal obesity. 2000
  115. Corticosterone facilitates saccharin intake in adrenalectomized rats: Does corticosterone increase stimulus salience? 2000
    10.1046/j.1365-2826.2000.00487.x 
  116. Voluntary sucrose ingestion, like corticosterone replacement, prevents the metabolic deficits of adrenalectomy 2000
    10.1046/j.1365-2826.2000.00488.x 
  117. Leptin in postmenopausal women: influence of hormone therapy, insulin, and fat distribution. 2000
    10.1210/jcem.85.5.6602 
  118. Bone mineral density in a rat model of type 2 diabetes 2000
  119. Precision and accuracy of dual-energy X-ray absorptiometry for determining in vivo body composition of mice 2000
    10.1038/oby.2000.47 
  120. Visceral fat, insulin sensitivity, and lipids in prepubertal children 1999
    10.2337/diabetes.48.8.1515 
  121. Do hormonal indices of maturation explain energy expenditure differences in African American and Caucasian prepubertal children? 1999
    10.1038/sj.ijo.0801078 
  122. Predicting body composition from anthropometry in pre-adolescent children 1999
    10.1038/sj.ijo.0800802 
  123. Developmental changes in energy expenditure and physical activity in children: Evidence for a decline in physical activity in girls before puberty 1998
    10.1542/peds.101.5.887 
  124. Total, resting, and activity-related energy expenditures are similar in Caucasian and African-American children 1998
  125. Total, resting, and activity-related energy expenditures are similar in Caucasian and African-American children. 1998
    10.1152/ajpendo.1998.274.2.E232 
  126. Fat distribution and insulin response in prepubertal African American and white children 1998
    10.1093/ajcn/67.5.821 
  127. Fat distribution and plasma lipid-lipoprotein concentrations in pre- and postmenopausal women 1998
    10.1038/sj.ijo.0800633 
  128. Influence of sex, seasonality, ethnicity, and geographic location on the components of total energy expenditure in young children: Implications for energy requirements 1998
    10.1093/ajcn/68.3.675 
  129. Longitudinal changes in fatness in white children: No effect of childhood energy expenditure 1998
    10.1093/ajcn/67.2.309 
  130. Prediction of intra-abdominal and subcutaneous abdominal adipose tissue in healthy pre-pubertal children 1998
    10.1038/sj.ijo.0800624 
  131. Relationships between dietary fat, body fat, and serum lipid profile in prepubertal children 1998
    10.1002/j.1550-8528.1998.tb00371.x 
  132. Serum leptin concentrations and weight gain in postobese, postmenopausal women 1998
    10.1002/j.1550-8528.1998.tb00347.x 
  133. Spontaneous testicular regression in collared lemmings (Dicrostonyx groenlandicus) exposed to prolonged long photoperiod 1998
    10.1530/jrf.0.1130307 
  134. Serum leptin and energy expenditure in children. 1997
    10.1210/jcem.82.12.4435 
  135. Maximal aerobic capacity in African-American and Caucasian prepubertal children 1997
  136. Maximal aerobic capacity in African-American and Caucasian prepubertal children 1997
  137. Maximal aerobic capacity in African-American and Caucasian prepubertal children. 1997
    10.1152/ajpendo.1997.273.4.E809 
  138. Effects of gender, ethnicity, body composition, and fat distribution on serum leptin concentrations in children 1997
    10.1210/jc.82.7.2148 
  139. Effects of gender, ethnicity, body composition, and fat distribution on serum leptin concentrations in children. 1997
    10.1210/jcem.82.7.4077 
  140. Alteration of testicular response to long photoperiod by transient exposure to short photoperiod in collared lemmings (Dicrostonyx groenlandicus) 1997
    10.1530/jrf.0.1090257 
  141. Correlates of leptin concentration in the San Antonio Heart Study. 1997
    10.1016/S1047-2797(97)00001-X 
  142. Physical activity related energy expenditure and fat mass in young children 1997
    10.1038/sj.ijo.0800383 
  143. Serum leptin and energy expenditure in children 1997
    10.1210/jc.82.12.4149 
  144. Visceral fat in white and African American prepubertal children 1997
    10.1093/ajcn/65.6.1703 
  145. Total energy expenditure and basal metabolic rate - Reply 1996
  146. Effect of the pre-testing environment on measurement of metabolic rate in children 1996
  147. Cross-calibration of body-composition techniques against dual-energy X-ray absorptiometry in young children 1996
    10.1093/ajcn/63.3.299 
  148. Cross-calibration of fat and lean measurements by dual-energy X-ray absorptiometry to pig carcass analysis in the pediatric body weight range 1996
    10.1093/ajcn/63.3.293 
  149. Determinants of basal fat oxidation in healthy Caucasians 1996
    10.1152/jappl.1996.80.5.1743 
  150. Influence of photoperiod, time, and sex on hormone concentrations in collared lemmings (Dicrostonyx groenlandicus) 1996
    10.1006/gcen.1996.0007 
  151. Endocrine correlates of seasonal body mass dynamics in the collared lemming (Dicrostonyx groenlandicus) 1995
    10.1093/icb/35.3.246 
  152. Obesity in Children: Recent Advances in Energy Metabolism and Body Composition 1995
    10.1002/j.1550-8528.1995.tb00150.x 
  153. PRENATAL AND POSTNATAL EFFECTS OF PHOTOPERIOD ON COLLARED LEMMINGS (DICROSTONYX GROENLANDICUS) 1994
  154. Pre- and postnatal effects of photoperiod on collared lemmings (Dicrostonyx groenlandicus). 1994
    10.1152/ajpregu.1994.267.4.R879 
  155. Effect of photoperiod, testosterone, and estradiol on body mass, bifid claw size, and pelage color in collared lemmings (Dicrostonyx groenlandicus) 1994
    10.1006/gcen.1994.1050 
  156. Photoperiod effects on body mass, body composition, growth hormone, and thyroid hormones in male collared lemmings (Dicrostonyx groenlandicus) 1994
    10.1139/z94-233 
  157. Pre- and postnatal effects of photoperiod on collared lemmings (Dicrostonyx groenlandicus) 1994
  158. Pre- and postnatal effects of photoperiod on collared lemmings (Dicrostonyx groenlandicus) 1994
  159. Response of collared lemmings to melatonin: I. Implants and photoperiod 1994
    10.1111/j.1600-079X.1994.tb00130.x 
  160. Response of collared lemmings to melatonin: II. Infusions and photoperiod 1994
    10.1111/j.1600-079X.1994.tb00131.x 
  161. Development of collared lemmings, Dicrostonyx groenlandicus, is influenced by pre‐ and postweaning photoperiods 1993
    10.1002/jez.1402670508 
  162. ENERGY ACQUISITION AND ALLOCATION IN MALE COLLARED LEMMINGS (DICROSTONYX-GROENLANDICUS) - EFFECTS OF PHOTOPERIOD, TEMPERATURE, AND DIET QUALITY 1993
  163. Effects of photoperiod history and temperature on male collared lemmings, Dicrostonyx groenlandicus 1993
    10.2307/1382438 
  164. Role of prolactin and the gonads in seasonal physiological changes in the collared lemming (Dicrostonyx groenlandicus) 1993
    10.1002/jez.1402660203 
  165. Threshold photoperiods for the induction of short day traits in collared lemmings (Dicrostonyx groenlandicus) 1993
    10.1002/jez.1402670109 
  166. Offspring growth and development responses to maternal transfer of 6-MBOA information in Microtus montanus 1992
    10.1139/z92-078 
  167. Role of photoperiod in reproductive maturation and peripubertal hormone concentrations in male collared lemmings (Dicrostonyx groenlandicus) 1992
    10.1530/jrf.0.0960153 
  168. The effects of fasting on some physiological parameters in the meadow vole, Microtus pennsylvanicus 1988
    10.1016/0300-9629(88)90948-6