The role of temperature in the regulation of the circadian rhythm of CO2 fixation in Bryophyllum fedtschenkoi

Planta ◽  
1995 ◽  
Vol 196 (2) ◽  
Author(s):  
PamelaJ. Carter ◽  
MalcolmB. Wilkins ◽  
HughG. Nimmo ◽  
CharlesA. Fewson
Keyword(s):  
Circadian Rhythm ◽  
Co2 Fixation

The Possible Role of Prolactin in the Circadian Rhythm of Leptin Secretion in Male Rats

2000 ◽  
Vol 224 (3) ◽  
pp. 152-158 ◽  
Author(s):  
C. A. Mastronardi ◽  
A. Walczewska ◽  
W. H. Yu ◽  
S. Karanth ◽  
A. F. Parlow ◽  
...  
Keyword(s):  
Circadian Rhythm ◽  
Male Rats

scholarly journals RhoA- and Actin-Dependent Functions of Macrophages from the Rodent Cardiac Transplantation Model Perspective -Timing Is the Essence

Biology ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 70
Author(s):  
Malgorzata Kloc ◽  
Ahmed Uosef ◽  
Martha Villagran ◽  
Robert Zdanowski ◽  
Jacek Z. Kubiak ◽  
...  
Keyword(s):  
Immune Response ◽  
Circadian Rhythm ◽  
Immune Cells ◽  
Chronic Rejection ◽  
Cardiac Transplantation ◽  
Small Gtpase ◽  
Eukaryotic Cells ◽  
Transplantation Model

The small GTPase RhoA, and its down-stream effector ROCK kinase, and the interacting Rac1 and mTORC2 pathways, are the principal regulators of the actin cytoskeleton and actin-related functions in all eukaryotic cells, including the immune cells. As such, they also regulate the phenotypes and functions of macrophages in the immune response and beyond. Here, we review the results of our and other’s studies on the role of the actin and RhoA pathway in shaping the macrophage functions in general and macrophage immune response during the development of chronic (long term) rejection of allografts in the rodent cardiac transplantation model. We focus on the importance of timing of the macrophage functions in chronic rejection and how the circadian rhythm may affect the anti-chronic rejection therapies.

Role of circadian rhythm and impact of circadian rhythm disturbance on the metabolism and disease

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Hui Han ◽  
Jinming Dou ◽  
Qingqing Hou ◽  
Huanjun Wang
Keyword(s):  
Circadian Rhythm ◽  
Rhythm Disturbance

Effect of somatostatin on circadian rhythms of firing and 2-deoxyglucose uptake in rat suprachiasmatic slices

1993 ◽  
Vol 265 (5) ◽  
pp. R1199-R1204 ◽  
Author(s):  
T. Hamada ◽  
S. Shibata ◽  
A. Tsuneyoshi ◽  
K. Tominaga ◽  
S. Watanabe
Keyword(s):  
Circadian Rhythm ◽  
Vasoactive Intestinal Polypeptide ◽  
Phase Changes ◽  
Circadian Clocks ◽  
Constant Darkness ◽  
Phase Resetting ◽  
Firing Activity ◽  
Light Pulses ◽  
Circadian Time

In mammals, the suprachiasmatic nucleus (SCN) of the hypothalamus appears to act as a circadian clock. The SCN vasoactive intestinal polypeptide-like immunoreactive neurons, which may act to mediate photic information in the SCN, receive input from neurons immunoreactive for somatostatin (SST). Therefore we investigated the role of SST as a transmitter for entrainment by analyzing the phase-resetting effect of SST on the circadian rhythm of SCN firing activity. Perfusion of SST increased 2-deoxyglucose uptake at circadian time (CT) 18, but not at CT6. A 1-h or 15-min treatment with SST produced phase delays when it was administered at CT13-14 and phase advances at CT22-23. Thus SST-induced phase changes are similar to those for light pulses to animals under constant darkness. The present findings suggest that SST is a transmitter for mediating information of entrainment to circadian clocks within the SCN.

The role of circadian rhythm on the pharmacokinetic of methotrexate in streptozotocin-induced diabetes mellitus rats

2005 ◽  
Vol 36 (4) ◽  
pp. 277-285 ◽  
Author(s):  
Mukaddes Gumustekin ◽  
Sule Kalkan ◽  
Nergiz Murat ◽  
Ozlem Gur ◽  
Nil Hocaoglu ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Circadian Rhythm ◽  
Streptozotocin Induced Diabetes

Role of the liver in regulation of the circadian rhythm of the blood iron concentration in rats

1991 ◽  
Vol 112 (1) ◽  
pp. 1034-1036 ◽  
Author(s):  
�. N. Barkova ◽  
E. V. Chesnokov ◽  
A. L. Korkin
Keyword(s):  
Circadian Rhythm ◽  
Iron Concentration
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