ScienceDaily: Health & Medicine News

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• Coordinating the circadian clock: Molecular pair controls time-keeping and fat metabolism
• Women cannot rewind the 'biological clock'
• Food ingredients most prone to fraudulent economically motivated adulteration
• Novel method used to combat malaria drug resistance
• Recovery from propofol anesthesia may be sped up by use of common stimulant
• Purified lung and thyroid progenitors derived from embryonic stem cells
• Tiny hitchhikers attack cancer cells: Gold nanostars first to deliver drug directly to cancer cell nucleus
• How embryonic stem cells orchestrate human development
• Microflora have decisive role with autoimmune illnesses, some good, some bad
• Possible clues found to why HIV vaccine showed modest protection
• First targeted nanomedicine to enter human clinical studies
• Treatment hope for muscular dystrophy

Coordinating the circadian clock: Molecular pair controls time-keeping and fat metabolism Posted: 06 Apr 2012 11:17 AM PDT Disruption in circadian rhythms leads to increased incidence of many diseases, including cancer. Each cell of the body has its own internal timing mechanism. A clock protein, called Rev-erb alpha, was thought to have a subordinate role because the clock runs fairly normally in its absence. New work has found that a closely related protein called Rev-erb beta serves as a back-up. When both are not functioning, the cellular clock loses its time-keeping function.

Women cannot rewind the 'biological clock' Posted: 05 Apr 2012 07:47 PM PDT Many women do not fully appreciate the consequences of delaying motherhood, and expect that assisted reproductive technologies can reverse their aged ovarian function, researchers have reported.

Food ingredients most prone to fraudulent economically motivated adulteration Posted: 05 Apr 2012 11:42 AM PDT The top seven adulterated ingredients in a food database are olive oil, milk, honey, saffron, orange juice, coffee and apple juice.

Novel method used to combat malaria drug resistance Posted: 05 Apr 2012 11:42 AM PDT Researchers have developed a "gene chip" to contribute to the identification of malaria drug resistance, an effort that will allow for real-time response in modified treatment strategies for this devastating disease.

Recovery from propofol anesthesia may be sped up by use of common stimulant Posted: 05 Apr 2012 11:42 AM PDT The ability of the commonly used stimulant methylphenidate (Ritalin) to speed recovery from general anesthesia appears to apply both to the inhaled gas isoflurane, as previously reported, and to the intravenous drug propofol.

Purified lung and thyroid progenitors derived from embryonic stem cells Posted: 05 Apr 2012 10:16 AM PDT Researchers have derived a population of pure lung and thyroid progenitor cells in vitro that successfully mimic the developmental milestones of lung and thyroid tissue formation.

Tiny hitchhikers attack cancer cells: Gold nanostars first to deliver drug directly to cancer cell nucleus Posted: 05 Apr 2012 10:15 AM PDT Nanotechnology offers powerful new possibilities for targeted cancer therapies, but the design challenges are many. Scientists have now developed a nanoparticle that can deliver a drug directly to a cancer cell's nucleus. They have also directly imaged nanoscale dimensions showing how nanoparticles interact with the nucleus, which dramatically changes shape. The researchers found this shape change linked to cells dying and the cell population becoming less viable.

How embryonic stem cells orchestrate human development Posted: 05 Apr 2012 10:14 AM PDT Researchers show in detail how three genes within human embryonic stem cells regulate development, a finding that increases understanding of how to grow these cells for therapeutic purposes.

Microflora have decisive role with autoimmune illnesses, some good, some bad Posted: 05 Apr 2012 04:52 AM PDT When the right microorganisms are at work, immune cells involved in the development of autoimmune illnesses like psoriasis, multiple sclerosis and arthritis, can develop anti-inflammatory properties. Scientists have now demonstrated that particular fungi activate the immune cells involved in the development of certain illnesses, whereas other microorganisms, in particular bacteria that are found naturally on our skin, lend an anti-inflammatory function to them.

Possible clues found to why HIV vaccine showed modest protection Posted: 04 Apr 2012 06:00 PM PDT Insights into how the first vaccine ever reported to modestly prevent HIV infection in people might have worked were recently published.

First targeted nanomedicine to enter human clinical studies Posted: 04 Apr 2012 11:43 AM PDT Scientists have found promising effects of a first-in-class targeted cancer drug called BIND-014 in treating solid tumors.

Treatment hope for muscular dystrophy Posted: 04 Apr 2012 10:37 AM PDT Medical researchers have found that increasing a specific protein in muscles could help treat Duchenne muscular dystrophy, a severe and progressive muscle wasting disease that affects young boys.

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