Steroid
hideA steroid is a terpenoid lipid characterized by its sterane or steroid nucleus: a carbon skeleton with four fused rings, generally arranged in a 6-6-6-5 fashion. Steroids vary by the functional groups attached to these rings and the oxidation state of the rings. Hundreds of distinct steroids are found in plants, animals, and fungi. All steroids are made in cells either from the sterol lanosterol (animals and fungi) or from the sterol cycloartenol (plants). Both sterols are derived from the cyclization of the triterpene squalene.
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News tagged with steroids
Researchers track down protein responsible for chronic rhinosinusitis with polyps
Nov 23, 2009 |
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A protein known to stimulate blood vessel growth has now been found to be responsible for the cell overgrowth in the development of polyps that characterize one of the most severe forms of sinusitis, a study by Johns Hopkins ...
Potential cancer drug may offer new hope for asthma patients
Dec 09, 2009 |
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A drug being tested to treat cancer could also help patients suffering from asthma, research has suggested.
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Achieving asthma control in preschoolers
Nov 23, 2009 |
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Asthma is the commonest chronic disease in children and a major reason for admissions to hospital, yet inadequate asthma control is present in 26% to 45% of children, states a review in CMAJ (Canadian Medical Association Journal). ...
Steroid injections may slow diabetes-related eye disease
Dec 15, 2009 |
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Injecting the corticosteroid triamcinolone into the eye may slow the progression of diabetic retinopathy, a complication of diabetes that can cause vision loss and blindness, according to a report in the December issue of ...
Teen marijuana use tilts up, while some drugs decline in use
Dec 14, 2009 |
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(PhysOrg.com) -- Marijuana use among American adolescents has increased gradually over the past two years (three years among 12th-graders) following years of declining use, according to the latest Monitoring the Future study, ...
Against expectations, genetic variation does not alter asthma treatment response
Nov 24, 2009 |
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(PhysOrg.com) -- Studies have suggested that asthma patients with a specific genetic variation might not respond as well to certain treatments as those with a different variation. But a new study in this week's edition of ...
Drug users know their stuff
Medicine & Health / Psychology & Psychiatry
Nov 24, 2009 |
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Drug users are well informed about the harms associated with the drugs they use, and perceive alcohol and tobacco to be amongst the most dangerous substances, according to a survey by UCL (University College ...
Promising pharmaceutical agents emerge as sports doping products
Medicine & Health / Medications
Nov 19, 2009 |
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Researchers from the German Sport University Cologne in Germany found that non-steroidal and tissue-selective anabolic agents such as Selective Androgen Receptor Modulators (SARMs) are being sold on the black market for their ...
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