News tagged with receptors
Related topics: cells , protein , brain , molecules , nerve cells
Receptor (biochemistry)
In biochemistry, a receptor is a protein molecule, embedded in either the plasma membrane or cytoplasm of a cell, to which a mobile signaling (or "signal") molecule may attach. A molecule which binds to a receptor is called a "ligand," and may be a peptide (such as a neurotransmitter), a hormone, a pharmaceutical drug, or a toxin, and when such binding occurs, the receptor undergoes a conformational change which ordinarily initiates a cellular response. However, some ligands merely block receptors without inducing any response (e.g. antagonists). Ligand-induced changes in receptors result in physiological changes which constitute the biological activity of the ligands.
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When oxygen is short, EGFR prevents maturation of cancer-fighting miRNAs
Even while being dragged to its destruction inside a cell, a cancer-promoting growth factor receptor fires away, sending signals that thwart the development of tumor-suppressing microRNAs (miRNAs) before it's dissolved, researchers ...
Cancer
6 hours ago |
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Study reveals new mechanism for estrogen suppression of liver lipid synthesis
By discovering the new mechanism by which estrogen suppresses lipid synthesis in the liver, UC Irvine endocrinologists have revealed a potential new approach toward treating certain liver diseases.
Medical research
7 hours ago |
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Pay attention: How we focus and concentrate
Scientists at Newcastle University have shed new light on how the brain tunes in to relevant information.
Neuroscience
13 hours ago |
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Scientists uncover molecular roots of cocaine addiction in the brain
Researchers at Johns Hopkins have unraveled the molecular foundations of cocaine's effects on the brain, and identified a compound that blocks cravings for the drug in cocaine-addicted mice. The compound, already proven safe ...
Neuroscience
May 22, 2013 |
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Finding a family for a pair of orphan receptors in the brain
Researchers at Emory University have identified a protein that stimulates a pair of "orphan receptors" found in the brain, solving a long-standing biological puzzle and possibly leading to future treatments for neurological ...
Medical research
May 21, 2013 |
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Poliovirus vaccine trial shows early promise for recurrent glioblastoma
An attack on glioblastoma brain tumor cells that uses a modified poliovirus is showing encouraging results in an early study to establish the proper dose level, researchers at Duke Cancer Institute report.
Cancer
May 21, 2013 |
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Registry questions superiority of bivalirudin over heparin
Results from a large observational study reported at EuroPCR 2013 today question whether bivalirudin is superior to heparin in the absence of GPIIb/IIIa blockade, showing similar 30-day mortality in patients with non-ST segment ...
Cardiology
May 22, 2013 |
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How serotonin receptors can shape drug effects, from LSD to migraine medication
New findings by researchers carrying out experiments at the U.S. Department of Energy Office of Science's Advanced Photon Source (APS) help explain why some drugs that interact with two kinds of human serotonin ...
Medical research
May 17, 2013 |
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Preventing blood poisoning
Peptide molecules derived from the body's natural immune system can help boost the body's defence against life-threatening blood poisoning, joint University research has uncovered.
Medical research
May 17, 2013 |
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Resistance to visceral leishmaniasis: New mechanisms involved
Researchers from CNRS, Université Toulouse III - Paul Sabatier and IRD have elucidated new molecular mechanisms involved in resistance to visceral leishmaniasis, a serious parasitic infection. They have shown that dectin-1 ...
Immunology
May 16, 2013 |
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