Post List

  • February 15, 2010
  • 11:12 AM

Broken teeth tell of tough times for Smilodon

by Laelaps in Laelaps

A reconstruction of Smilodon, photographed at the American Museum of Natural History.

When it comes to animals, encyclopedias often present us with generalized descriptions. Where a creature lives, what color it is, what it eats, and other tidbits of information are listed to distinguish one species from another, but what is lost is an appreciation of variation. Be they genetic, anatomical, or behavioral, variations are grist for natural selection's mill, and if you study any species in de........ Read more »

Wendy J. Binder; Blaire Van Valkenburgh. (2010) A comparison of tooth wear and breakage in Rancho La Brea Sabertooth Cats and dire wolves across time. Journal of Verterbrate Paleontology, 30(1), 255-161. info:/10.1080/02724630903413016

  • February 15, 2010
  • 11:11 AM

Autism and Asperger’s in the DSM-V: Thoughts on clinical utility

by Nestor Lopez-Duran PhD in Child-Psych

Last week after writing about the DSM-V “Temper Dysregulation Disorder with Dysphoria,” I received several emails asking my opinion regarding the proposed merger of autism and Asperger’s disorder into a single ’spectrum’ category.  This change has clearly generated some significant political debate in the media and the blogosphere, with some in favor of the change [...]... Read more »

Klin, A., Pauls, D., Schultz, R., & Volkmar, F. (2005) Three Diagnostic Approaches to Asperger Syndrome: Implications for Research. Journal of Autism and Developmental Disorders, 35(2), 221-234. DOI: 10.1007/s10803-004-2001-y  

  • February 15, 2010
  • 10:00 AM

Prostate problem probed

by sciencebase in Sciencebase Science Blog

Pinpointing prostate problems – The chemical cousin of magnetic resonance imaging, MR spectroscopy, could be used to pinpoint the exact location of prostate cancers and to determine the aggressiveness of a tumour without major surgical intervention, according to research published in the journal Science Translational Medicine.
“Magnetic resonance (MR) spectroscopy which can analyse the biochemistry rather [...]Prostate problem probed is a post from: Sciencebase Science Blog
... Read more »

Wu, C., Jordan, K., Ratai, E., Sheng, J., Adkins, C., DeFeo, E., Jenkins, B., Ying, L., McDougal, W., & Cheng, L. (2010) Metabolomic Imaging for Human Prostate Cancer Detection. Science Translational Medicine, 2(16), 16-16. DOI: 10.1126/scitranslmed.3000513  

  • February 15, 2010
  • 09:21 AM

“Badgertastics!” – Treatments For Somnambulism In Adults

by Kylie Sturgess in Podblack Blog

How simple is it to treat somnambulism? The recent popularity of the recorded alter-ego of 'Sleep-Talking Man' has me looking at what research has been done.... Read more »

  • February 15, 2010
  • 08:00 AM

Land conservation programs not strategically targeting projects to control growth

by Rob Goldstein in Conservation Maven

A new study looks at whether land conservation programs are targeting their efforts to control the path of development and promote smart growth...... Read more »

  • February 15, 2010
  • 07:07 AM

Speaking truth to Slow Food

by Jeremy in Agricultural Biodiversity Weblog

Slow Food is against standardization, right? Slow Food is for diversity, right? Well, sort of. That is certainly the rhetoric, but a paper by Ariane Lotti in Agriculture and Human Values suggests that the practice can be rather different.
Lotti, who’s something of an insider, analyzes one of Slow Food’s projects in detail and comes to [...]... Read more »

  • February 15, 2010
  • 05:02 AM

Repression debunked

by BPS Research Digest in BPS Research Digest

Psychologists in Denmark may have hammered the final nail into the coffin containing 'repression' - the idea, made popular by psychoanalysis, that negative, emotional memories are particularly prone to be being locked up out of conscious reach.Simon Nørby and his colleagues at the University of Copenhagen presented dozens of undergrad participants with word pairs, each made up of a cue word and an unrelated target word. Past research has suggested that people are able to deliberately forget som........ Read more »

  • February 15, 2010
  • 05:00 AM

Leaf-Cutter Ants Dabble with Nitrogen Fixation

by Laura Klappenbach in About Animals / Wildlife

Leaf-cutter ants are crafty cultivators. They tend vast gardens of fungus that they harvest to feed their minions. In return, the ants care for the fungus. They constantly clip and compost bits of leaves to form a rich substrate on which the fungus thrives. When the fungus is attacked by pathogens, the ants fight back, armed with bacteria that counteract the pathogen.... Read more »

Pinto-Tomas, A., Anderson, M., Suen, G., Stevenson, D., Chu, F., Cleland, W., Weimer, P., & Currie, C. (2009) Symbiotic Nitrogen Fixation in the Fungus Gardens of Leaf-Cutter Ants. Science, 326(5956), 1120-1123. DOI: 10.1126/science.1173036  

  • February 15, 2010
  • 04:00 AM

Finally a Viral Cause of Chronic Fatigue Syndrome? Or Not? – How Results Can Vary and Depend on Multiple Factors

by Laika Spoetnik in Laika's Medliblog

Last week @F1000 (on Twitter) alerted me to an interesting discussion at F1000 on a paper in Science, that linked Chronic fatigue syndrome (CFS) to a newly discovered human virus XRMV [1. This finding was recently disputed by another study in PLOS [2], ... Read more »

Lombardi VC, Ruscetti FW, Das Gupta J, Pfost MA, Hagen KS, Peterson DL, Ruscetti SK, Bagni RK, Petrow-Sadowski C, Gold B.... (2009) Detection of an infectious retrovirus, XMRV, in blood cells of patients with chronic fatigue syndrome. Science (New York, N.Y.), 326(5952), 585-9. PMID: 19815723  

Erlwein, O., Kaye, S., McClure, M., Weber, J., Wills, G., Collier, D., Wessely, S., & Cleare, A. (2010) Failure to Detect the Novel Retrovirus XMRV in Chronic Fatigue Syndrome. PLoS ONE, 5(1). DOI: 10.1371/journal.pone.0008519  

  • February 15, 2010
  • 02:44 AM

Women Online Shopping: Shop Until You Drop?

by Dr Shock in Dr Shock MD PhD

Personally I like online shopping mainly because it’s easy, fast and convenient, you can shop when you want to anywhere you want to. There’s a gender gap in online shopping. More men than women engage in online shopping and make online purchases while in the offline world women love to shop.
Until recent very few [...]

Related posts:Why Women Drop Maths Not only in the medical academic workforce are women...
Finding Credible Health Information Online: MedLibs Round 1.8 The MedL........ Read more »

  • February 15, 2010
  • 02:36 AM

SIRT1 on the brain: Sirtuin controls behavior under CR

by ouroboros in Ouroboros: Research in the biology of aging

Not only does the mammalian sirtuin SIRT1 mediate the lifespan extension phenotype of caloric restriction (CR), it is also involved in controlling behavior (such as food intake) in response to CR (and possibly during ad libitum feeding as well).
Two recent papers with consistent results address the issue. Both studies employed brain-specific knockouts of SIRT1; [...]... Read more »

Çakir, I., Perello, M., Lansari, O., Messier, N., Vaslet, C., & Nillni, E. (2009) Hypothalamic Sirt1 Regulates Food Intake in a Rodent Model System. PLoS ONE, 4(12). DOI: 10.1371/journal.pone.0008322  

  • February 14, 2010
  • 06:29 PM

Paleo-Eskimo Genome Sequenced

by Kris in Ge·knit·ics

As reported in the New York Times, the cover article of Nature this week describes the sequencing of a Paleo-Eskimo genome from Greenland.  This is the first ancient sequence from the New World, and is important for a number of reasons: The sequence analysis was conducted from a sample of human hair that was recovered [...]... Read more »

Rasmussen, M., Li, Y., Lindgreen, S., Pedersen, J., Albrechtsen, A., Moltke, I., Metspalu, M., Metspalu, E., Kivisild, T., Gupta, R.... (2010) Ancient human genome sequence of an extinct Palaeo-Eskimo. Nature, 463(7282), 757-762. DOI: 10.1038/nature08835  

  • February 14, 2010
  • 04:45 PM

How to judge a treatment

by Bronwyn Thompson in Healthskills: Skills for Healthy Living

Last week I discussed an interview with F Sommer Anderson and also discussed aspects of central sensitisation syndromes, and Will Baum from where the client is kindly forwarded me a response by Dr Anderson.  I am going to muse on one or two aspects of her response because they raise issues that I think are [...]... Read more »

  • February 14, 2010
  • 04:33 PM

Stronger than ceramic yet supple as metals

by Akshat Rathi in Contemplation

Researchers at the California Institute of Technology have developed a material that has ceramic-like strength and metal-like ductility. They have achieved this feat through the use of zirconium based metallic glasses and nano-sized pillared structure.... Read more »

  • February 14, 2010
  • 01:00 PM

Children and their Pets: A Valentine’s Weekend Post

by Jason Goldman in The Thoughtful Animal

Well, its Valentine’s weekend, and a good excuse to talk about animals and love. And animals in love. And humans in love with animals. And such. Of course, I can’t talk about kissing and animals without giving a shout out to Sheril and her upcoming book The Science of Kissing, and her Science of Kissing [...]... Read more »

  • February 14, 2010
  • 10:06 AM

Hypoxia for Muscle Growth: Get Huge or Die?

by mc in begin to dig (b2d)

A recently accepted paper shows that working in an oxygen deprived environment can gosh darn it, build muscle when doing resistance work. WHile jokes might start about the variety of ways that one could replicate a near-asphyxiated space - from smoking to putting a plastic bag (with some holes) over one's head - i'm thinking that in the case of resistance training (as opposed to altitude/endurance where there's a definite blood/muscle adaptation), based on the findings, we're........ Read more »

  • February 14, 2010
  • 10:00 AM

Getting Warmer, Getting Colder: The Chilly Paradox of Familiarity

by David DiSalvo in Neuronarrative

For most of us, familiar surroundings are comforting. Familiar places and faces offer a sense of stability in the maelstrom of everyday life. This seems especially true when we’re going through hard times; perhaps any port in the storm will suffice, but the one you know best is doubtless the one you’d rather find.

But does familiarity hold the same value if we’re feeling on top of the world? In other words, does the warm glow of what we know always stay strong despite our ........ Read more »

  • February 14, 2010
  • 10:00 AM

Students’ writing procrastination – not anymore!

by Anatoliy Gruzd in Social Media Lab

Even under the best of circumstances, the process of writing can be challenging for both professional and novice writers alike. For novice writers such as university students, the difficulties associated with writing can be further exacerbated when it is combined with their tendency to procrastinate and delay starting a paper till the night before it is due. Unfortunately, it seems that regardless of what an instructor may say or do, many students still inevitably get caught in an endless loop o........ Read more »

Twidale, M.B., Gruzd, A.A. . (2008) Writing in the Library: exploring tighter integration of digital library use with the writing process. Information Processing , 44(2), 558-580. info:/10.1016/j.ipm.2007.05.010

  • February 13, 2010
  • 10:59 PM

Backdoor Entry to Gay Eugenics

by Ultimo167 in Strong Silent Types

Frisell et al. (2010) contribute toward that maddening science of linking homosexuality to mental illness and I wonder, why bother?... Read more »

  • February 13, 2010
  • 09:00 PM

A radical source of antibiotic resistance…

by Jim Caryl in mental indigestion

A FEW years ago, a Boston University team headed by Jim Collins published findings that suggested the means by which bactericidal antibiotics result in cell death, irrespective of the initial cellular target of the drug, was by stimulating the production of hydroxyl radicals, a reactive oxygen species 1. The hydroxyl radical is known to cause [...]... Read more »

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