Research Topics
| RUTH B HARRISSummaryAffiliation: University of Georgia Country: USA Publications
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Detail Information
Publications
Energy expenditure and body composition of chronically maintained decerebrate rats in the fed and fasted conditionRuth B S Harris
Department of Foods and Nutrition, Dawson Hall, University of Georgia, Athens, Georgia 30602, USA
Endocrinology 147:1365-76. 2006..In the absence of communication from the forebrain, the caudal brainstem is inadequate for maintenance of testosterone levels or lean tissue in fed or fasted animals...- Leptin responsiveness in chronically decerebrate ratsRuth B S Harris
Department of Foods and Nutrition, Dawson Hall, University of Georgia, Athens, GA 30602, USA
Endocrinology 148:4623-33. 2007.... - Differences in response to corticotropin-releasing factor after short- and long-term consumption of a high-fat dietAriadne Legendre
Department of Foods and Nutrition, University of Georgia, Athens, GA 30602, USA
Am J Physiol Regul Integr Comp Physiol 293:R1076-85. 2007.... - Changes in environmental temperature influence leptin responsiveness in low- and high-fat-fed miceRuth B S Harris
Department of Foods and Nutrition, University of Georgia, Dawson Hall, Athens, GA 30602, USA
Am J Physiol Regul Integr Comp Physiol 293:R106-15. 2007.... - Chronic disruption of body weight but not of stress peptides or receptors in rats exposed to repeated restraint stressRuth B S Harris
Department of Foods and Nutrition, Dawson Hall, University of Georgia, Athens, GA 30605, USA
Horm Behav 49:615-25. 2006.... - Increased glucocorticoid response to a novel stress in rats that have been restrainedRuth B S Harris
Department of Foods and Nutrition, Dawson Hall, University of Georgia, Athens, GA 30602, USA
Physiol Behav 81:557-68. 2004..Therefore, multiple aspects of the stress response may be exaggerated in these animals and contribute to the chronic reduction in body weight... - Leptin action is modified by an interaction between dietary fat content and ambient temperatureAndrea L Haltiner
Department of Foods and Nutrition, University of Georgia, Athens, GA 30602, USA
Am J Physiol Regul Integr Comp Physiol 287:R1250-5. 2004..These results suggest that dietary fat modifies the mechanisms responsible for leptin-induced changes in body fat content and that those in HF-fed mice are sensitive to environmental temperature... - Method of leptin dosing, strain, and group housing influence leptin sensitivity in high-fat-fed weanling miceHeather Bowen
Department of Foods and Nutrition, University of Georgia, Athens, Georgia 30602, USA
Am J Physiol Regul Integr Comp Physiol 284:R87-100. 2003.... - Hyperleptinemia and reduced TNF-alpha secretion cause resistance of db/db mice to endotoxinAbram M Madiehe
Department of Foods and Nutrition, University of Georgia, Athens, Georgia 30602, USA
Am J Physiol Regul Integr Comp Physiol 284:R763-70. 2003..This resistance may be due to high levels of free leptin cross-reacting with other cytokine receptors... 
Antagonism of specific corticotropin-releasing factor receptor subtypes selectively modifies weight loss in restrained ratsChristina Chotiwat
Department of Foods and Nutrition, University of Georgia, Dawson Hall, Athens, GA 30605, USA
Am J Physiol Regul Integr Comp Physiol 295:R1762-73. 2008..The sustained reduction in body weight is independent of the severity of hypophagia on the days of restraint and of RRS-induced corticosterone release...- Compensation for an increase in body fat caused by donor transplants into miceCherie Rooks
Department of Foods and Nutrition, University of Georgia, Athens, 30602, USA
Am J Physiol Regul Integr Comp Physiol 286:R1149-55. 2004..These results suggest that mice have mechanisms to maintain total body fat mass that respond to an increase in the number of fat cells present... - High dietary calcium reduces body fat content, digestibility of fat, and serum vitamin D in ratsEmilia Papakonstantinou
Department of Foods and Nutrition, University of Georgia, Athens, Georgia 30602, USA
Obes Res 11:387-94. 2003..DISCUSSION: These results confirm that a high-calcium diet decreases body weight and fat content due to a lower digestible energy intake caused by increased fecal lipid and a nonsignificant reduction in gross energy intake... - Antagonism of corticotrophin-releasing factor receptors in the fourth ventricle modifies responses to mild but not restraint stressJoanna R Miragaya
Department of Foods and Nutrition, Dawson Hall, University of Georgia, Athens, GA 30602, USA
Am J Physiol Regul Integr Comp Physiol 295:R404-16. 2008..Hindbrain CRFR do not appear to influence stress-induced corticosterone release in RRS rats... - Sympathetic denervation does not prevent a reduction in fat pad size of rats or mice treated with peripherally administered leptinCherie R Rooks
Department of Foods and Nutrition, Dawson Hall, University of Georgia, Athens, GA 30602, USA
Am J Physiol Regul Integr Comp Physiol 289:R92-102. 2005..These changes in intact pads of rats with one denervated fat pad imply communication between fat depots and suggest that both leptin and the SNS regulate the size of individual depots... - Direct and indirect effects of leptin on preadipocyte proliferation and differentiationBlair Wagoner
Department of Foods and Nutrition, Dawson Hall, University of Georgia, Athens, GA 30602, USA
Am J Physiol Regul Integr Comp Physiol 290:R1557-64. 2006..These results suggest that leptin could inhibit preadipocyte proliferation by modifying release of a factor from tissue other than adipose tissue... - Exaggerated response to mild stress in rats fed high-fat dietAriadne Legendre
Dept of Foods and Nutrition, Dawson Hall, Univ of Georgia, Athens, GA 30602, USA
Am J Physiol Regul Integr Comp Physiol 291:R1288-1294. 2006..The hyperresponsiveness of the HPA axis in HF-fed rats is similar to that observed in animals that have been exposed to a significant chronic or acute stress, suggesting that the HF diet may initially be perceived as a stressor... - Effects of central or peripheral leptin administration on norepinephrine turnover in defined fat depotsDawn M Penn
Department of Foods and Nutrition, University of Georgia, Dawson Hall, Athens, GA 30602, USA
Am J Physiol Regul Integr Comp Physiol 291:R1613-21. 2006..These results demonstrate that leptin acting either centrally or peripherally selectively increases sympathetic outflow to white fat depots and that a leptin-induced change in fat pad weight does not require an increase in NETO... - Increased anxiety-like behavior during the post-stress period in mice exposed to repeated restraint stressChristina Chotiwat
Department of Foods and Nutrition, Dawson Hall, The University of Georgia, Athens, GA 30602, USA
Horm Behav 50:489-95. 2006..This post-stress hypersensitivity to mild stress may contribute to the sustained reduction in the body weight of RR animals... - Compensation for partial lipectomy in mice with genetic alterations of leptin and its receptor subtypesRuth B S Harris
Department of Foods and Nutrition, University of Georgia, Athens 30602, USA
Am J Physiol Regul Integr Comp Physiol 283:R1094-103. 2002..These data indicate that leptin is not required for the regulation of total body fat... - Strain-dependent stimulation of growth in leptin-treated obese db/db miceAbram M Madiehe
Department of Foods and Nutrition, University of Georgia, Athens 30602, USA
Endocrinology 143:3875-83. 2002..This response may be masked by activation of the long-form receptor in wild-type animals that lose body fat during leptin treatment... - Leptin responsiveness in mice that ectopically express agouti proteinRuth B S Harris
Department of Foods and Nutrition, University of Georgia, Dawson Hall, Athens, GA 30605, USA
Physiol Behav 75:159-67. 2002..These results demonstrate that the effect of leptin on energy balance is not entirely dependent upon the melanocortin system... - Leptin-induced changes in body composition in high fat-fed miceRuth B S Harris
Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA
Exp Biol Med (Maywood) 228:24-32. 2003.... - Leptin resistance in mice is determined by gender and duration of exposure to high-fat dietRuth B S Harris
Department of Foods and Nutrition, Dawson Hall, University of Georgia, Athens, GA 30602, USA
Physiol Behav 78:543-55. 2003.... - Dietary fish oil does not protect rats exposed to restraint or sleep deprivation stressEmilia Papakonstantinou
Department of Foods and Nutrition, University of Georgia, Dawson Hall, Athens, GA 30602, USA
Physiol Behav 78:759-65. 2003..In conclusion, our results suggest that high levels of dietary FO do not improve the response to stress in rats exposed to mixed stressors... - Compensatory growth of adipose tissue after partial lipectomy: involvement of serum factorsDorothy B Hausman
Department of Foods and Nutrition, University of Georgia, Athens, Georgia 30602, USA
Exp Biol Med (Maywood) 229:512-20. 2004..Thus, compensatory adipose tissue growth after lipectomy may be mediated, in part, by blood-borne factors that are derived from tissues other than adipose tissue... - Weight loss in rats exposed to repeated acute restraint stress is independent of energy or leptin statusRuth B S Harris
Pennington Biomedical Research Center, Baton Rouge, Louisiana 70808, USA
Am J Physiol Regul Integr Comp Physiol 282:R77-88. 2002..These results indicate that repeated acute stress induces a chronic change in weight independent of stress-induced hypophagia and may represent a change in homeostasis initiated by repeated acute activation of the central CRF system... - Rats fed only during the light period are resistant to stress-induced weight lossRuth B S Harris
Pennington Biomedical Research Center, 6400 Perkins Road, Baton Rouge, LA 70808, USA
Physiol Behav 76:543-50. 2002..This study demonstrates that stress-induced weight loss only occurs when rats have food available during their normal feeding period (dark phase) and is not determined by increased corticosterone release... 
Location, location, locationRuth B S Harris
Department of Foods and Nutrition, University of Georgia, Athens, GA 30602, USA
Cell Metab 7:359-61. 2008..While subcutaneous fat seems to confer metabolic benefits, species differences in adipose biology justify caution in interpreting the results...- Short photoperiod exposure increases adipocyte sensitivity to noradrenergic stimulation in Siberian hamstersRobert R Bowers
Molecular and Cellular Biology and Pathobiology Program, Medical University of South Carolina, Charleston, USA
Am J Physiol Regul Integr Comp Physiol 288:R1354-60. 2005..Therefore, the SD-induced increase in SNS drive to WAT and increased sensitivity to this drive may work together to increase lipolysis in SDs... - Differential control of peripheral circadian rhythms by suprachiasmatic-dependent neural signalsHongnian Guo
Department of Biology and Program in Neuroscience and Behavior, University of Massachusetts, Amherst, MA 01003, USA
Proc Natl Acad Sci U S A 102:3111-6. 2005..These results indicate that the SCN regulates expression of circadian oscillations in different peripheral organs by diverse pathways... - Melanocortin-4 receptor mRNA is expressed in sympathetic nervous system outflow neurons to white adipose tissueC Kay Song
Department of Biology, Neurobiology and Behavior Program, Georgia State University, 24 Peachtree Center Ave NE, Atlanta, Georgia 30302-4010, USA
Am J Physiol Regul Integr Comp Physiol 289:R1467-76. 2005..These data provide compelling neuroanatomical evidence that could underlie a direct central modulation of the sympathetic outflow to WAT by the melanocortins through the MC4-Rs resulting in changes in lipid mobilization and adiposity... - CXCL13 is required for B1 cell homing, natural antibody production, and body cavity immunityK Mark Ansel
Howard Hughes Medical Institute and Department of Microbiology and Immunology, University of California, San Francisco, 513 Parnassus Avenue, San Francisco, CA 94143, USA
Immunity 16:67-76. 2002..These findings provide insight into the mechanism of B1 cell homing and establish a critical role for B1 cell compartmentalization in the production of natural antibodies and for body cavity immunity... - Melanocortin-4 receptor mRNA expressed in sympathetic outflow neurons to brown adipose tissue: neuroanatomical and functional evidenceC Kay Song
Department of Biology, Georgia State University, 24 Peachtree Center Ave NE, Atlanta, GA 30302 4010, USA
Am J Physiol Regul Integr Comp Physiol 295:R417-28. 2008..Collectively, these data add significant support to the view that central melanocortins are important in controlling IBAT thermogenesis via the SNS innervation of this tissue, likely through the MC4-Rs...