Search Results - "Freeman, DA"

Periodic arousal from hibernation is necessary for initiation of immune responses in ground squirrels by Prendergast, Brian J, Freeman, David A, Zucker, Irving, Nelson, Randy J

“…Golden-mantled ground squirrels (Spermophilus lateralis) undergo seasonal hibernation during which core body temperature (T(b)) values are maintained 1-2…”
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Reduced leptin concentrations are permissive for display of torpor in Siberian hamsters by Freeman, David A, Lewis, Daniel A, Kauffman, Alexander S, Blum, Robert M, Dark, John

“…A photoperiod with a short photophase induces a winterlike phenotype in Siberian hamsters that includes a progressive decrease in food intake and body mass and…”
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Melatonin Acts at the Suprachiasmatic Nucleus to Attenuate Behavioral Symptoms of Infection by Freeman, David A, Kampf-Lassin, August, Galang, Jerome, Wen, Jarvi C, Prendergast, Brian J

“…In common with reproduction, immune function exhibits strong seasonal patterns, which are driven by annual changes in day length (photoperiod) and melatonin…”
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Refractoriness to Melatonin Occurs Independently at Multiple Brain Sites in Siberian Hamsters by Freeman, David A., Zucker, Irving

“…The mid-winter development of refractoriness to melatonin (Mel) triggers recrudescence of the atrophied reproductive apparatus of rodents. As a consequence,…”
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Neuropeptide Y induces torpor-like hypothermia in Siberian hamsters by Paul, Matthew J., Freeman, David A., Park, Jin Ho, Dark, John

“…Intracerebroventricular (ICV) injections of neuropeptide Y (NPY) are known to decrease body temperature ( T b) of laboratory rats by 1–3 °C. Several NPY…”
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Photoperiod alters central distribution of estrogen receptor [alpha] in brain regions that regulate aggression by Kramer, Kristin M, Simmons, Jennifer L, Freeman, David A

“…Testosterone or its metabolite, estrogen, regulates aggression in males of many mammalian species. Because plasma testosterone levels are typically positively…”
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Effects of troglitazone on intracellular cholesterol distribution and cholesterol-dependent cell functions in MA-10 Leydig tumor cells by Freeman, Dale A, Romero, Angela

“…Troglitazone treatment of MA-10 Leydig tumor cells resulted in cellular cholesteryl esters decreasing and cell free cholesterol increasing. This was not an…”
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Different Neural Melatonin-Target Tissues are Critical for Encoding and Retrieving Day Length Information in Siberian Hamsters by Teubner, B. J. W., Freeman, D. A.

“…Siberian hamsters exhibit several seasonal rhythms in physiology and behaviour, including reproduction, energy balance, body mass, and pelage colouration…”
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The thalamic intergeniculate leaflet modulates photoperiod responsiveness in Siberian hamsters by Freeman, David A., Dhandapani, Krishnan M., Goldman, Bruce D.

“…Siberian hamsters are seasonal breeders that use changes in day length to synchronize their reproductive effort with those times of the year most favorable for…”
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Accumulation and mobilization of triglycerides and cholesteryl esters in Leydig tumor cells by Freeman, DA, Ontko, JA

“…Incubating MA-10 Leydig tumor cells with sodium oleate led to the accumulation of triglyceride within the cells. Triglycerides were deposited in a time- and…”
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The Thalamic Intergeniculate Leaflet Mediates Locomotor Activity-Induced Reversal of Phenotype in Photoperiod Nonresponsive Siberian Hamsters by Freeman, David A., Teubner, Brett J. W., Goldman, Bruce D.

“…The role of the intergeniculate leaflet of the thalamus (IGL) in photoperiod responsiveness was examined in a laboratory-selected line of photoperiod…”
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Termination of Neuroendocrine Refractoriness to Melatonin in Siberian Hamsters (Phodopus sungorus) by Kauffman, A. S., Freeman, D. A., Zucker, I.

“…Siberian hamsters maintained from birth in a short day length (DL), unlike their long‐day counterparts, fail to undergo reproductive development by 5 weeks of…”
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More on the pregnant mare urine industry by Freeman, Douglas A

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Photoperiodic Control of Oestrous Cycles in Syrian Hamsters: Mediation by the Mediobasal Hypothalamus by Lewis, D., Freeman, D. A., Dark, J., Wynne-Edwards, K. E., Zucker, I.

“…To assess whether the mediobasal hypothalamus (MBH) is necessary for photoperiodic control of oestrous cycles and prolactin secretion, we tested intact female…”
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Perinatal Influences of Melatonin on Testicular Development and Photoperiodic Memory in Siberian Hamsters by Tuthill, C. R., Freeman, D. A., Butler, M. P., Chinn, Tori, Park, J. H., Zucker, I.

“…We assessed the influence of perinatal melatonin on reproductive development and adult responsiveness to melatonin. Testicular growth in an intermediate day…”
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Low Ambient Temperature Accelerates Short-Day Responses in Siberian Hamsters by Altering Responsiveness to Melatonin by Larkin, Jennie E., Freeman, David A., Zucker, Irving

“…Exposure to low ambient temperatures (Ta) accelerates appearance of the winter phenotype in Siberian hamsters transferred from long to short day lengths…”
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Behavior and physiologic responses of mares to short-term isolation by Strand, Sarah C, Tiefenbacher, Stefan, Haskell, Melissa, Hosmer, Trina, McDonnell, Sue M, Freeman, Douglas A

“…The aim of this study was to evaluate the behavior and physiologic responses of mares to removal from an established pasture herd and to isolation in a pasture…”
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Validation and Implementation of the PowerPlex® 16 BIO System STR Multiplex for Forensic Casework by Greenspoon, SA, Ban, JD, Pablo, L, Crouse, CA, Kist, FG, Tomsey, CS, Glessner, AL, Mihalacki, LR, Long, TM, Heidebrecht, BJ, Braunstein, CA, Freeman, DA, Soberalski, C, Bruesehoff, N, Amin, AS, Douglas, EK, Schumm, JW

“…The PowerPlex® 16 BIO multiplex short tandem repeat (STR) system contains the 13 CODIS loci (FGA, TPOX, D8S1179, vWA, D18S51, D21S11, TH01, D3S1358, CSF1PO,…”
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Cytotoxic effects of cigarette smoke alkaloids inhibit the progesterone production and cell growth of cultured MA-10 Leydig tumor cells by Gocze, P.M., Freeman, D.A.

“…Inhibition of corpus luteum progesterone synthesis by cigarette smoke alkaloids might, in part, explain the generally poorer outcome of pregnancy in smoking…”
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Temperature-Independence of Circannual Variations in Circadian Rhythms of Golden-Mantled Ground Squirrels by Freeman, David A., Zucker, Irving

“…In golden-mantled ground squirrels, phase angles of entrainment of circadian locomotor activity to a fixed light-dark cycle differ markedly between subjective…”
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