Background: All mouse strains are different, before choosing a strain for a large study, a small scale study should be done. In this study, we compared young males of two mouse strains, C57BL/6J and the hybrid B6129SF1/J, and gained knowledge on their performance in three different behavioral tests; open field (OF) test, Barnes maze (BM) test and a restraint stress test.
Results: We found that the young males of the C57BL/6J strain spent more time moving in the OF. In the BM, the hybrid covered less ground before reaching the goal box during the first three sessions, than the C57BL/6J. The hybrid left more fecal pellets than C57BL/6J both in OF and BM. During the stress test, the C57BL/6J had a lower corticosterone response than the hybrid.
Conclusions: Our findings indicate that the C57BL/6J has a presumably higher locomotor activity and/or explorative behavior than the hybrid, while the hybrid appeared more sensitive to stress.
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http://dx.doi.org/10.1186/s42826-022-00140-5 | DOI Listing |
STAR Protoc
December 2024
Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27606, USA; Office of Research and Innovation, North Carolina State University, Raleigh, NC 27606, USA. Electronic address:
Bone marrow chimera is a useful tool to determine the pathophysiological contributions of hematopoietic versus stromal compartments. Here, we present a protocol for lethal irradiation of wild-type C57BL/6J recipient mice followed by the transplantation of bone marrow from mTomato-expressing donors. We then detail procedures for animal distress scoring and assessment of reconstitution efficiency.
View Article and Find Full Text PDFNat Commun
December 2024
The Verna and Marrs McLean Department of Biochemistry and Molecular Pharmacology, Baylor College of Medicine, Houston, TX, USA.
The scaffolding function of receptor interacting protein kinase 1 (RIPK1) confers intrinsic and extrinsic resistance to immune checkpoint blockades (ICBs) and emerges as a promising target for improving cancer immunotherapies. To address the challenge posed by a poorly defined binding pocket within the intermediate domain of RIPK1, here we harness proteolysis targeting chimera (PROTAC) technology to develop a RIPK1 degrader, LD4172. LD4172 exhibits potent and selective RIPK1 degradation both in vitro and in vivo.
View Article and Find Full Text PDFPsychopharmacology (Berl)
December 2024
Department of Psychology, Sapienza University of Rome, Rome, Italy.
Rationale: The specific location of deviations from normative models of brain function varies considerably across individuals with the same diagnoses. However, as pathological processes are distributed across interconnected systems, this heterogeneity of individual brain deviations may also reveal similarities and differences between disorders. The paraventricular nucleus of the thalamus (PVT) is a potential switcher to various behavioral responses where functionally distinct cell types exist across its antero-posterior axis.
View Article and Find Full Text PDFNeuroscience
January 2025
Department of Biological Sciences, Kent State University, 1275 University Esplanade, Kent, OH 44242, USA; School of Biomedical Sciences, Kent State University, 1275 University Esplanade, Kent, OH 44242, USA; Brain Health Research Institute, Kent State University, 1275 University Esplanade, Kent, OH 44242, USA. Electronic address:
Environmental light serves as the main entraining signal for the central circadian pacemaker, the suprachiasmatic nucleus of the hypothalamus (SCN). To shift clock timing with the changing environment, minute adjustments are necessary and the endocannabinoid system (ECS) acts as a neuromodulatory signaling mechanism in the SCN. These systems exert bidirectional effects on one another, still, limited knowledge exists about the role of endocannabinoids in circadian rhythm regulation.
View Article and Find Full Text PDFJ Ethnopharmacol
January 2025
Departments of Neuroscience, Anatomy, Histology, and Embryology, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, China. Electronic address:
Ethnopharmacological Relevance: The use of lavender as sleep aid or hypnotic agent can be traced back as early as ancient Romans and Greeks. Yet, objective experimental data on whether and how lavender enhances sleep duration or/and sleep quality remain lacking.
Aim Of The Study: We aimed to characterize the sleep-wake regulating effects of lavender in the mouse and to demonstrate the brain targets and neural circuits involved.
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