Results 271 to 280 of about 2,139,288 (317)
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Annual Review of Physiology, 2007
Iron is needed by all mammalian cells but is toxic in excess. Specialized transport mechanisms conduct iron across cellular membranes. These are regulated to ensure homeostasis both systemically in living organisms and within individual cells. Over the past decade, major advances have been made in identifying and characterizing the proteins involved in
Nancy C, Andrews, Paul J, Schmidt
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Iron is needed by all mammalian cells but is toxic in excess. Specialized transport mechanisms conduct iron across cellular membranes. These are regulated to ensure homeostasis both systemically in living organisms and within individual cells. Over the past decade, major advances have been made in identifying and characterizing the proteins involved in
Nancy C, Andrews, Paul J, Schmidt
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Australian and New Zealand Journal of Medicine, 1977
Potassium balance is regulated by appropriate changes in potassium excretion in the distal portion of the nephron. By contrast, potassium intake, absorption and proximal renal reabsorption do not show regulatory variation. Extracellular potassium concentration, which is a critical factor in membrane polarization, may at times vary in a direction ...
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Potassium balance is regulated by appropriate changes in potassium excretion in the distal portion of the nephron. By contrast, potassium intake, absorption and proximal renal reabsorption do not show regulatory variation. Extracellular potassium concentration, which is a critical factor in membrane polarization, may at times vary in a direction ...
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Annual Review of Medicine, 1991
This review describes a homeostatic model for the regulation of nutrient intake and the control of partitioning between fat and protein storage. With this homeostatic model, the clinical abnormalities of energy storage such as obesity, anorexia nervosa, and cancer cachexia are examined and potential mechanisms suggested.
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This review describes a homeostatic model for the regulation of nutrient intake and the control of partitioning between fat and protein storage. With this homeostatic model, the clinical abnormalities of energy storage such as obesity, anorexia nervosa, and cancer cachexia are examined and potential mechanisms suggested.
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Current Opinion in Neurobiology, 2013
Research on sleep homeostasis aims to answer the question: how does the brain measure the duration and intensity of previous wakefulness in order to increase the duration and intensity of subsequent sleep? The search of regulatory factors has identified a number of potential molecules that increase their concentration in waking and decrease it during ...
Porkka-Heiskanen (Stenberg) Tarja +1 more
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Research on sleep homeostasis aims to answer the question: how does the brain measure the duration and intensity of previous wakefulness in order to increase the duration and intensity of subsequent sleep? The search of regulatory factors has identified a number of potential molecules that increase their concentration in waking and decrease it during ...
Porkka-Heiskanen (Stenberg) Tarja +1 more
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Homeostasis with Multiple Inputs
SIAM Journal on Applied Dynamical Systems, 2018zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Martin Golubitsky, Ian Stewart 0001
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Magnesium homeostasis and aging
Magnesium Research, 2009Aging is very often associated with magnesium (Mg) deficit. Total plasma magnesium concentrations are remarkably constant in healthy subjects throughout life, while total body Mg and Mg in the intracellular compartment tend to decrease with age. Dietary Mg deficiencies are common in the elderly population.
BARBAGALLO, Mario +2 more
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Criminal Behaviour and Mental Health, 2010
AbstractThe seasonal change in the duration of the night time release of melatonin is responsible for activating the hypothalamic gonadtrophin‐releasing hormone (GnRH) pulse generator in seasonal breeding animals. Paul Mullen and I considered that it might also be responsible for the activation of the child's GnRH pulse generator at the onset of human ...
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AbstractThe seasonal change in the duration of the night time release of melatonin is responsible for activating the hypothalamic gonadtrophin‐releasing hormone (GnRH) pulse generator in seasonal breeding animals. Paul Mullen and I considered that it might also be responsible for the activation of the child's GnRH pulse generator at the onset of human ...
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Perspectives in Biology and Medicine, 1973
Claude Bernard1 was the first to point out clearly that the internal medium of living organisms is not merely a vehicle for carrying nourishment to cells but that “it is the fixity of the ‘milieu interieur’ which is the condition of free and independent life.” W. B.
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Claude Bernard1 was the first to point out clearly that the internal medium of living organisms is not merely a vehicle for carrying nourishment to cells but that “it is the fixity of the ‘milieu interieur’ which is the condition of free and independent life.” W. B.
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WIREs Systems Biology and Medicine, 2010
AbstractMetazoan life is dependent upon the utilization of O2 for essential metabolic processes and oxygen homeostasis is an organizing principle for understanding metazoan evolution, ontology, physiology, and pathology. Hypoxia‐inducible factor 1 (HIF‐1) is a transcription factor that is expressed by all metazoan species and functions as a master ...
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AbstractMetazoan life is dependent upon the utilization of O2 for essential metabolic processes and oxygen homeostasis is an organizing principle for understanding metazoan evolution, ontology, physiology, and pathology. Hypoxia‐inducible factor 1 (HIF‐1) is a transcription factor that is expressed by all metazoan species and functions as a master ...
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Sleep and Synaptic Homeostasis
2014In the last decades a substantial knowledge about sleep mechanisms has been accumulated. However, the function of sleep still remains elusive. The difficulty with unraveling sleep's function may arise from the lack of understanding of how the multitude of processes associated with waking and sleep-from gene expression and single neuron activity to the ...
Vyazovskiy VV, FARAGUNA, UGO
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