Results 31 to 40 of about 159,619 (232)
Endogenous circannual rhythm in LH secretion: insight from signal analysis coupled with mathematical modelling [PDF]
Philosophical Transactions of the Royal Society, Series A 367,
1908 (2009) 4759-4777, 2009 In sheep as in many vertebrates, the seasonal pattern of reproduction is timed by the annual photoperiodic cycle, characterized by seasonal changes in the daylength. The photoperiodic information is translated into a circadian profile of melatonin secretion. After multiple neuronal relays (within the hypothalamus), melatonin impacts GnRH (gonadotrophin
arxiv +1 more source
Synchronization and entrainment of coupled circadian oscillators [PDF]
Interface Focus 1, 167-176 (2011), 2010 Circadian rhythms in mammals are controlled by the neurons located in the suprachiasmatic nucleus of the hypothalamus. In physiological conditions, the system of neurons is very efficiently entrained by the 24-hour light-dark cycle. Most of the studies carried out so far emphasize the crucial role of the periodicity imposed by the light dark cycle in ...
arxiv +1 more source
Hypothalamic expression analysis of m6A RNA methylation associated genes suggests a potential role of epitransciptomics in sexual maturation of Atlantic salmon [PDF]
Aquaculture, Volume 579, 30 January 2024, 740151Better understanding the molecular processes contributing to variation in maturation timing is important for Atlantic salmon aquaculture, as early maturation causes considerable financial losses. The m6A RNA methylation is a conserved and dynamically reversible mechanism controlling gene expression in a myriad of biological processes.
arxiv +1 more source
Observability of Hypergraphs [PDF]
arXiv, 2023 In this paper we develop a framework to study observability for uniform hypergraphs. Hypergraphs, being extensions of graphs, allow edges to connect multiple nodes and unambiguously represent multi-way relationships which are ubiquitous in many real-world networks.
arxiv
Scientific Reports, 2017 In recent years, hypopituitarism caused by traumatic brain injury (TBI) has been explored in many clinical studies; however, few studies have focused on intracranial hypertension and stress caused by TBI. In this study, an intracranial hypertension model,
Huajun Tan +6 more
doaj +1 more source
Frontiers in Endocrinology, 2020 Obesity is a prominent metabolic disease that predisposes individuals to multiple comorbidities, including type 2 diabetes mellitus, cardiovascular diseases, and cancer. Elevated circulating levels of fatty acids contribute to the development of obesity,
Andy Tran +6 more
doaj +1 more source
Frontiers in Cellular Neuroscience, 2022 Microglia are now well-known as integral regulators of brain development, phagocytosing whole neurons, and pruning weak or excess synapses in order to sculpt and refine immature circuits.
Zuri Ngozi, Jessica L. Bolton
doaj +1 more source
Stability and Hopf bifurcation analysis of a four-dimensional hypothalamic-pituitary-adrenal axis model with distributed delays [PDF]
, 2017 A four-dimensional mathematical model of the hypothalamus-pituitary-adrenal (HPA) axis is investigated, incorporating the influence of the GR concentration and general feedback functions. The inclusion of distributed time delays provides a more realistic modeling approach, since the whole past history of the variables is taken into account.
arxiv +1 more source
Characterization of N6-Cyclohexyladenosine-Induced Hypothermia in Syrian Hamsters
Journal of Pharmacological Sciences, 2005 The N6-cyclohexyladenosine (CHA)-induced hypothermia in Syrian hamsters was characterized as follows: intracerebroventricular injection of CHA-induced hypothermia and the potency was increased by lowering the ambient temperature.
Mitsuteru Shintani +3 more
doaj
Scientific ReportsReduced hippocampal volume occurs in major depressive disorder (MDD), potentially due to elevated glucocorticoids from an overactivated hypothalamus–pituitary–adrenal (HPA) axis.
Karen Lin +5 more
doaj +1 more source