Post List

  • December 10, 2010
  • 08:20 AM

Feces and phylogeny

by Becky in It Takes 30

A couple of weeks ago I wondered aloud about the question of whether diet-related changes in the nature of gut bacteria could have significant effects in evolution.  The paper I was writing about at the time showed that flies fed different diets quickly began to prefer mates who had been fed the same diet, and [...]... Read more »

  • December 10, 2010
  • 08:00 AM

Unexpected endogenous viruses

by Vincent Racaniello in virology blog

During the replication of retroviruses, a double-stranded DNA copy of the viral RNA genome is synthesized by reverse transcription and integrated into the genomes of the infected cell. When retroviral DNA is integrated into the DNA of germ line cells, it is passed on to future generations in Mendelian fashion as an endogenous provirus. Until [...]... Read more »

Horie M, Honda T, Suzuki Y, Kobayashi Y, Daito T, Oshida T, Ikuta K, Jern P, Gojobori T, Coffin JM.... (2010) Endogenous non-retroviral RNA virus elements in mammalian genomes. Nature, 463(7277), 84-7. PMID: 20054395  

Katzourakis A, & Gifford RJ. (2010) Endogenous viral elements in animal genomes. PLoS genetics, 6(11). PMID: 21124940  

  • December 10, 2010
  • 07:51 AM

Using an eagle to catch and kill a wolf

by Darren Naish in Tetrapod Zoology

No time for anything new (err, just a tad busy at the moment), so here's something else from the Tet Zoo archives. This article originally appeared on ver 1 in April 2006 and appears here in slightly modified form.

In previous articles we've looked at the ability of large eagles - the Golden eagle Aquila chrysaetos in particular - to kill surprisingly large prey. As in adult pronghorn, adult reindeer, juvenile red deer and juvenile domestic cattle etc. (see links below, or Cooper (1969), De........ Read more »

Phillips, R. L., Cummings, J. L., Notah, G., & Mullis, C. (1996) Golden eagle predation on domestic calves. Wildlife Society Bulletin, 468-470. info:/

  • December 10, 2010
  • 07:07 AM

Simple Jury Persuasion: Tilt your head. (no kidding)

by Rita Handrich in The Jury Room

Evolutionary psychologists do some weird research. But we’re not holding that against them.  I mean, we’re talking about evolution.  Instead, we’ll take what they find and translate it for your use at trial. But this is odd! Australian researchers (Burke & Sulikowski, 2010) looked at tilting heads and attractiveness in the eyes of observers. What [...]

Related posts:Simple Jury Persuasion: Be Powerful in the Courtroom
Simple Jury Persuasion: Got charisma?
Simple Jury Persuasion: Us........ Read more »

Darren Burke, & Danielle Sulikowski. (2010) A New Viewpoint on the Evolution of Sexually Dimorphic Human Faces. Evolutionary Psychology, 8(4). info:/

  • December 10, 2010
  • 07:00 AM

Sedentary Physiology Part 5 – Future Directions

by Travis Saunders, MSc, CEP in Obesity Panacea

Image by kaibara87
Welcome to our 5-part series delving into the fascinating research being performed in the emerging field of sedentary physiology.  In Part 1 we discussed the basics of sedentary physiology, in Part 2 and Part 3 we looked at the association of sedentary time with both death and disease, and in Part 4 we looked at the mechanisms underlying these relationships.  Today we will look at where future work in the field of sedentary physiology is heading.
Given the research that we........ Read more »

Tremblay, MS, Colley, RC, Saunders, TJ, Healy, G, & Owen, N. (2010) Physiological and health implications of a sedentary lifestyle. Applied Physiology, Nutrition and Metabolism. info:/

  • December 10, 2010
  • 06:44 AM

Painting the human tree of life

by Razib Khan in Gene Expression

Tishkoff et al.
Reading Peter Bellwood’s First Farmers: The Origins of Agricultural Societies, I’m struck by how much of a difference five years has made. When Bellwood was writing the ‘orthodoxy’ of the nature of the expansion of farming into Europe leaned toward cultural diffusion. Today the paradigm is in flux, as a new generation of [...]... Read more »

Brenna M. Henn, Simon Gravel, Andres Moreno-Estrada, Suehelay Acevedo-Acevedo, & Carlos D. Bustamante. (2010) Fine-scale population structure and the era of next-generation sequencing. Hum. Mol. Genet. . info:/10.1093/hmg/ddq403

  • December 10, 2010
  • 05:17 AM

Meditation vs. Medication for Depression

by Neuroskeptic in Neuroskeptic

What's the best way to overcome depression? Antidepressant drugs, or Buddhist meditation?A new trial has examined this question: Segal et al. The short answer is that 8 weeks of mindfulness mediation training was just as good as prolonged antidepressant treatment over 18 months. But like all clinical trials, there are some catches.Right mindfulness, sammā-sati, is the 7th step on the Buddha's Nobel Eightfold Path of enlightenment. In its modern therapeutic form, however, it's a secular practi........ Read more »

  • December 10, 2010
  • 05:00 AM

“Help! Help! I can’t breathe.” “Quick, pour this tonic in your nose!”

by Nsikan Akpan in That's Basic Science

Tonic Water Ingredient Used to Treat Asthma... Read more »

  • December 10, 2010
  • 04:45 AM

Another nanotechnology step towards 'Fantastic Voyage'

by Michael Berger in nanowerk

Off-targeting remains a key challenge of researchers working on nanoparticle drug delivery - the majority of intravenously administered therapeutic nanoparticles are also reaching normal tissues, resulting in considerable adverse side effects. Another challenge of nanoparticle drug delivery includes the limited penetration depth of particles into the tumors. While extensive efforts have been devoted for designing therapeutic nanoparticles, a new study - echoing the journey through the human body........ Read more »

Kagan, D., Laocharoensuk, R., Zimmerman, M., Clawson, C., Balasubramanian, S., Kang, D., Bishop, D., Sattayasamitsathit, S., Zhang, L., & Wang, J. (2010) Rapid Delivery of Drug Carriers Propelled and Navigated by Catalytic Nanoshuttles. Small, 6(23), 2741-2747. DOI: 10.1002/smll.201001257  

  • December 10, 2010
  • 03:50 AM

The Antikythera Mechanism

by GrrlScientist in GrrlScientist

Two years ago, a paper was published in Nature describing the function of the oldest known scientific computer, a device built in Greece around 100 BCE. ... Read more »

  • December 10, 2010
  • 03:17 AM

by crabsallover in Science of Healthy Long Life

reposted from: via highlights in red and my comments in bold orangeExpert opinion: aspirin and cancer – the unanswered questionsIn the light of today’s headlines about aspirin and cancer, we spoke to one of our leading scientists Profe........ Read more »

  • December 9, 2010
  • 09:55 PM

Searching for Drugs that Target Antibiotic Resistance

by Michael Long in Phased

Drugs that selectively target resistant bacteria may help to counter the antibiotic resistance phenomenon.... Read more »

Chait, R., Shrestha, S., Shah, A. K., Michel, J.-B., & Kishony, R. (2010) A Differential Drug Screen for Compounds That Select Against Antibiotic Resistance. PLoS ONE, 5(12). info:/10.1371/journal.pone.0015179

  • December 9, 2010
  • 07:36 PM

Psycasm - No-one cuts deeper than a Science Blogger.

by Rift in Psycasm

[Wherein our hero looks at our general online credulousness, and why So we recorded our second trial of the Psychobabble Podcast the other night, I'm yet to edit down into a nice ipod-size programme, but I thought I might make a post regarding an interesting paper, and series of points that came up.---But first, please help me help a PhD! She has half the data set she needs, but another 100 p; (read more)

Source: Rift - Discipline: Psychology... Read more »

Chesney, T., & Su, D. (2010) The impact of anonymity on weblog credibility. International Journal of Human-Computer Studies, 68(10), 710-718. DOI: 10.1016/j.ijhcs.2010.06.001  

  • December 9, 2010
  • 06:46 PM

Could a new photoreceptor in fly larvae give us a glimpse at the evolutionary origins of vision?

by Michael Bok in Arthropoda

Last month, a paper was published in Nature showing that fruit fly larvae (Drosophila melanogaster) have a photoreceptive system spread across their entire bodies in diffuse sensory neurons. This system is involved in escape responses that protect the larvae from exposure to high intensity light. (For a thorough explanation of this paper read this post [...]... Read more »

  • December 9, 2010
  • 06:11 PM

Biomimicry: Borrow From Nature! Mother Earth Forgets To Patent

by DJ Busby in Astronasty

Lately I've noticed a decent amount of technological innovation resulting from biomimicry. Aeronautics traditionally seems to reap the most benefit from this process, but that field is by no means the only one benefiting. We often come up with designs inspired by nature, but how often is our end result superior than our inspiration?... Read more »

  • December 9, 2010
  • 05:53 PM

Solar Powered Hornets?

by Dan Bailey in Smells Like Science

The phrase “solar powered hornets” may conjure terrifying images of a futuristic, stinging swarm of eco-conscious, half-insect, half-machine hornets. But these hornets might already exist. And don’t worry, they’re just normal hornets. Researchers have recently discovered that the Oriental hornet may be capable of harvesting energy from sunlight.... Read more »

Plotkin, M., Hod, I., Zaban, A., Boden, S., Bagnall, D., Galushko, D., & Bergman, D. (2010) Solar energy harvesting in the epicuticle of the oriental hornet (Vespa orientalis). Naturwissenschaften, 97(12), 1067-1076. DOI: 10.1007/s00114-010-0728-1  

  • December 9, 2010
  • 05:34 PM

ADHD and High School Academics

by William Yates, M.D. in Brain Posts

Assessing the impact of a diagnosis of ADHD on school performance is a research challenge.  Many children and adolescents have a concurrent psychiatric disorder that can also impair learning.  Concurrent mental disorders found at higher rates for children with ADHD include (but are not limited to):Oppositional defiant disorderConduct disorderAnxiety disorderAutism spectrum disorderReading disorder or other learning disorderSo when designing research experiments to examine the academic ........ Read more »

Kent KM, Pelham WE Jr, Molina BS, Sibley MH, Waschbusch DA, Yu J, Gnagy EM, Biswas A, Babinski DE, & Karch KM. (2010) The Academic Experience of Male High School Students with ADHD. Journal of abnormal child psychology. PMID: 21103923  

  • December 9, 2010
  • 05:17 PM

Will Calgary’s new mayor succeed where Obama has failed?

by Christopher Leo in Christopher Leo

Calgary's new mayor, Naheed Nenshi, like Barack Obama, staged an upset victory with the help of social networking. Will he, unlike Obama, succeed in changing the political game? Continue reading →... Read more »

  • December 9, 2010
  • 04:49 PM

Zoledronic acid did not improve disease free survival in early breast cancer

by Sally Church in Pharma Strategy Blog

Wow, every now and then, something unexpected turns up and makes you stop, listen and most importantly, think.  This was the headline from an American Association of Clinical Research (AACR) news release that I received from the San Antonio Breast … Continue reading →... Read more »

Gnant, M., Mlineritsch, B., Schippinger, W., Luschin-Ebengreuth, G., Pöstlberger, S., Menzel, C., Jakesz, R., Seifert, M., Hubalek, M., Bjelic-Radisic, V.... (2009) Endocrine Therapy plus Zoledronic Acid in Premenopausal Breast Cancer. New England Journal of Medicine, 360(7), 679-691. DOI: 10.1056/NEJMoa0806285  

  • December 9, 2010
  • 04:27 PM

Pregnant and high: new treatments?

by PalMD in White Coat Underground

Many years ago a woman came to OB triage at my hospital.  She was about 28 weeks pregnant and feeling horrible.   As the nurses hooked her up to monitors and started an IV, she clutched a pink, kidney-shaped emesis basin, her boyfriend holding her hair back and away.  A few minutes later, she called [...]... Read more »

Jones, H., Kaltenbach, K., Heil, S., Stine, S., Coyle, M., Arria, A., O'Grady, K., Selby, P., Martin, P., & Fischer, G. (2010) Neonatal Abstinence Syndrome after Methadone or Buprenorphine Exposure. New England Journal of Medicine, 363(24), 2320-2331. DOI: 10.1056/NEJMoa1005359  

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