Results 331 to 340 of about 3,024,874 (379)
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The microbiome and gut homeostasis
Science, 2022Changes in the composition of the gut microbiota are associated with many human diseases. So far, however, we have failed to define homeostasis or dysbiosis by the presence or absence of specific microbial species.
Jee-Yon Lee, R. Tsolis, A. Bäumler
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New Phytologist, 2009
SummaryCopper (Cu) is a cofactor in proteins that are involved in electron transfer reactions and is an essential micronutrient for plants. Copper delivery is accomplished by the concerted action of a set of evolutionarily conserved transporters and metallochaperones. As a result of regulation of transporters in the root and the rarity of natural soils
Jason L, Burkhead +4 more
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SummaryCopper (Cu) is a cofactor in proteins that are involved in electron transfer reactions and is an essential micronutrient for plants. Copper delivery is accomplished by the concerted action of a set of evolutionarily conserved transporters and metallochaperones. As a result of regulation of transporters in the root and the rarity of natural soils
Jason L, Burkhead +4 more
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Orthopedic Clinics of North America, 1990
Precise maintenance of the physiologic levels of both extracellular and intracellular ionized calcium is essential to life. Calcium and phosphate homeostasis is complex, yet three important hormones are responsible for modulating most of the extracellular control of these minerals.
S D, Boden, F S, Kaplan
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Precise maintenance of the physiologic levels of both extracellular and intracellular ionized calcium is essential to life. Calcium and phosphate homeostasis is complex, yet three important hormones are responsible for modulating most of the extracellular control of these minerals.
S D, Boden, F S, Kaplan
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Seminars in Immunology, 1997
B- and T-lymphocyte populations have an independent homeostatic regulation of resting (B and T) and activated (B) or memory (T) cell compartments. This organization may provide an efficient mechanism to ensure simultaneously a first natural barrier of protection against common pathogens, the maintenance of immunological T-cell memory and a reservoir of
Tanchot, Corinne +4 more
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B- and T-lymphocyte populations have an independent homeostatic regulation of resting (B and T) and activated (B) or memory (T) cell compartments. This organization may provide an efficient mechanism to ensure simultaneously a first natural barrier of protection against common pathogens, the maintenance of immunological T-cell memory and a reservoir of
Tanchot, Corinne +4 more
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Advances in Kidney Disease and Health
Potassium homeostasis is essential for maintaining the normal resting membrane potential of excitable cells. Yet daily dietary potassium typically far exceeds total extracellular potassium, thus the body has elegant strategies to shift potassium into cells promptly after a meal and then the kidneys efficiently excrete potassium.
Niraj B. Desai, Melanie P. Hoenig
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Potassium homeostasis is essential for maintaining the normal resting membrane potential of excitable cells. Yet daily dietary potassium typically far exceeds total extracellular potassium, thus the body has elegant strategies to shift potassium into cells promptly after a meal and then the kidneys efficiently excrete potassium.
Niraj B. Desai, Melanie P. Hoenig
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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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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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Lymphocyte Homing and Homeostasis
Science, 1996The integration and control of systemic immune responses depends on the regulated trafficking of lymphocytes. This lymphocyte “homing” process disperses the immunologic repertoire, directs lymphocyte subsets to the specialized microenvironments that ...
E. Butcher, L. Picker
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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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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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