Post List

  • November 23, 2009
  • 05:26 AM

Sunday Protist - Litostomatea: rumen ciliates with incredible morphology

by Psi Wavefunction in Skeptic Wonder

Scary lab exam in 9h, so this one will be another 'protist appreciation' compilation rather than anything particularly informative. Today this maltreatment will be inflicted upon some poor ciliates, which deserve much more than just a simple appreciation post. Ciliates ARE the higher eukaryotes, the most advanced and awesome organisms on earth. What god created in his/her/its image wasn't the ugly naked humans, it was, in fact, Spirotrich ciliates. Everything else is just basal offshoots, failed........ Read more »

  • November 23, 2009
  • 05:00 AM

Introducing the Magombera Chameleon

by Laura Klappenbach in About Animals / Wildlife

Attention all chameleon fans! It's official: there is now one more species of chameleon known to science. Meet the Magombera chameleon, aka Kinyongia magomberae, a small chameleon with a long tail and a delicate spattering of colors. Although most of its body scales are a soft grey-brown hue, this little lizard is far from dull.
... Read more »

MICHELE MENEGON, KRYSTAL A. TOLLEY, TREVOR JONES,, FRANCES COROVERO, ANDREW R. MARSHALL, & . (2009) A new species of chameleon (Sauria: Chamaeleonidae: Kinyongia) from the Magombera forest and the Udzungwa Mountains National Park, Tanzania. African Journal of Herpetology, 58(2), 59-70. info:/

  • November 23, 2009
  • 02:39 AM

The Functional Neuroanatomy of Depression

by Dr Shock in Dr Shock MD PhD

Based on the results from functional neuroimaging studies, lesion patient studies and brain stimulation studies two important brain areas play an important role in the pathophysiology of depression. These two brain area s are the ventromedial prefrontal cortex and the dorsolateral prefrontal cortex. The ventromedial prefrontal cortex is depicted in red on the picture above [...]

Related posts:New Kind of Brain Stimulation for Treatment Resistant Depression In a recent online publication abou........ Read more »

  • November 22, 2009
  • 10:29 PM

Targeted Sequencing Bags a Diagnosis

by Keith Robison in Omics! Omics!

A nice complement to the one paper (Ng et al) I detailed last week is a paper that actually came out just before hand (Choi et al). Whereas the Ng paper used whole exome targeted sequencing to find the mutation for a previously unexplained rare genetic disease, the Choi et al paper used a similar scheme (though with a different choice of targeting platform) to find a known mutation in a patient, thereby diagnosing the patient.The patient in question has a tightly interlocked pedigree (Figure 2)........ Read more »

Choi M, Scholl UI, Ji W, Liu T, Tikhonova IR, Zumbo P, Nayir A, Bakkaloğlu A, Ozen S, Sanjad S.... (2009) Genetic diagnosis by whole exome capture and massively parallel DNA sequencing. Proceedings of the National Academy of Sciences of the United States of America, 106(45), 19096-101. PMID: 19861545  

  • November 22, 2009
  • 07:41 PM

New family tree for moa

by hilaryml in Chicken or Egg blog

A new take on the evolutionary history of the moa was published in PNAS this week.  Mike Bunce from Murdoch University in Perth and researchers from Alan Cooper’s lab at University of Adelaide have combined genetic data from over 260 moa bones with anatomical, geological and ecological information, to revise species relationships among moa and suggest a timeframe and origin for [...]... Read more »

Bunce, M., Worthy, T., Phillips, M., Holdaway, R., Willerslev, E., Haile, J., Shapiro, B., Scofield, R., Drummond, A., Kamp, P.... (2009) The evolutionary history of the extinct ratite moa and New Zealand Neogene paleogeography. Proceedings of the National Academy of Sciences. DOI: 10.1073/pnas.0906660106  

  • November 22, 2009
  • 06:14 PM

Knocking Wood

by Journal Watch Online in Journal Watch Online

Tree plantations can drain soil of nutrients

... Read more »

  • November 22, 2009
  • 04:13 PM

The Extrastriate Body Area and Visual Distortions in Anorexia

by The Neurocritic in The Neurocritic

Contour Drawing Rating Scale (Thompson & Gray, 1995) - established as a reliable and valid measure of body size perception.Anorexia nervosa, an obsessive and unrelenting quest for thinness, is one of the most deadly psychiatric disorders. The documented mortality rate ranges from 3.3% to 18% in different studies (Herzog et al., 2000), and those with the disorder are ten times more likely to die from their illness than a comparable healthy population. A severe distortion of body image is a ca........ Read more »

Suchan, B., Busch, M., Schulte, D., Grönermeyer, D., Herpertz, S., & Vocks, S. (2010) Reduction of gray matter density in the extrastriate body area in women with anorexia nervosa. Behavioural Brain Research, 206(1), 63-67. DOI: 10.1016/j.bbr.2009.08.035  

  • November 22, 2009
  • 12:57 PM

An unwanted kiss from a moral man. Still feeling dirty?

by Christian Jarrett in BPS Research Digest

We know that physical sullying, immorality and shame can all be associated with feelings of literal and mental dirtiness, but it's not entirely clear how all these things interact. For example, for a heterosexual woman, which is worse: having a kiss forced on you by an otherwise moral man, or having a consensual kiss with an immoral man? Corinna Elliott and Adam Radomsky have investigated and they say their findings could prove useful to therapists treating people with obsessive compulsive disor........ Read more »

  • November 22, 2009
  • 11:59 AM

Seccond Generation Biofuels

by Lab Rat in Lab Rat

As part of my course last year, I wrote an extended long essay concerning the use of bacteria in biorefineries. As I've had a very lazy weekend (and to celebrate crossing the hundred post mark) I've decided to reproduce some of it here. More may be forthcoming at some point, depending on the laziness of my weekends.Second Generation BiofuelsSecond generation biofuels consist of lignocellulose material, which is broken down into simple sugars via enzymatic reactions and then fermented to produce ........ Read more »

  • November 22, 2009
  • 07:35 AM

Another Drug to Treat Drug Addiction

by Neuroskeptic in Neuroskeptic

Today I was going to blog this paper, which says that you can predict which kids will grow up and be criminals by measuring their Pavlovian fear conditioning at age 8. In Mauritius. But The Last Psychiatrist already said everything I was going to.Luckily, there's another article in the American Journal of Psychiatry about crime in a tropical country for me to write about - Randomized, Double-Blind, Placebo-Controlled Trial of Vigabatrin for the Treatment of Cocaine Dependence in Mexican Parolees........ Read more »

  • November 22, 2009
  • 01:35 AM

Ioannidis on effect size inflation, with guest appearance by Bozo the Clown

by Tal Yarkoni in citation needed

Andrew Gelman posted a link on his blog today to a paper by John Ioannidis I hadn’t seen before. In many respects, it’s basically the same paper I wrote earlier this year as a commentary on the Vul et al “voodoo correlations” paper (the commentary was itself based largely on an earlier chapter I wrote [...]... Read more »

  • November 21, 2009
  • 05:50 PM

Evolving Chemicals

by Jon Voisey in Angry Astronomer

No matter the context, to Creationists, "Evolution" is a dirty word that they have to deny exists or minimize.I already have an entire series of posts about stellar evolution. But another "evolution" Creationists try to deny is the so-called "chemical evolution". What this might mean differs depending on which Creationist you're talking to (or more commonly, by how far you've forced them to move their goalposts), but one context they frequently mean is the process by which the universe became en........ Read more »

  • November 21, 2009
  • 01:52 PM

Prediting cardiac arrhythmia among patients with palpitations.

by Robert Badgett in ClinDx

The authors of the systematic review conclude that cardiac arrhythmia is more likely when the patient has a history of heart disease or palpitations affected by sleeping or while at work.... Read more »

Thavendiranathan, P., Bagai, A., Khoo, C., Dorian, P., & Choudhry, N. (2009) Does This Patient With Palpitations Have a Cardiac Arrhythmia?. JAMA: The Journal of the American Medical Association, 302(19), 2135-2143. DOI: 10.1001/jama.2009.1673  

  • November 21, 2009
  • 01:44 PM

Predicting low cardiac index and central oxygenation

by Robert Badgett in ClinDx

The authors found that physical findings had good specificity in predicting low cardiac index (CI) and low central oxygenation; however, at the low prevalence of low CI in this study, even when all three physical findings were present, the positive predictive value was 40%.... Read more »

Grissom CK, Morris AH, Lanken PN, Ancukiewicz M, Orme JF Jr, Schoenfeld DA, Thompson BT, & National Institutes of Health/National Heart, Lung and Blood Institute Acute Respiratory Distress. (2009) Association of physical examination with pulmonary artery catheter parameters in acute lung injury. Critical care medicine, 37(10), 2720-6. PMID: 19885995  

  • November 21, 2009
  • 12:25 PM

Wetland Plant of the Week #33

by Johnny in Ecographica

The abundance of Hypericum fasciculatum, when combined with its multi-branched physiognomy and its habitat preference for plentiful water, make the plant an integral component of aquatic ecosystems here in Florida. As mentioned previously, the structure provided by the plant’s branches, branchlets and leaves attract a myriad of arthropod species. Once attracted by the ‘peelbark,’ these same arthropods will, in turn, move to occupy niches... Read more »

Knight, T., McCoy, M., Chase, J., McCoy, K., & Holt, R. (2005) Trophic cascades across ecosystems. Nature, 437(7060), 880-883. DOI: 10.1038/nature03962  

  • November 21, 2009
  • 12:19 PM

A very large ancient rockslide in Chile

by Dr Dave in Dave's Landslide Blog

I am en route to Santiago in Chile to attend the Chilean Geological Congress, the organisers of which kindly invited me to give one of the keynote lectures (on Friday). I thought therefore that I would point out that Chile has an extraordinary set of very large rock avalanches. Earlier this year, Antinao and Gosse (2009) published an interesting review of a set in the Chilean Cordillera Principal. I do not intend to publish a full review of the paper here, but thought I would highlight just on........ Read more »

  • November 21, 2009
  • 07:04 AM

Ciliate orgies and barnacles with twin penises

by Psi Wavefunction in Skeptic Wonder

Like any other human beings on the planet, scientists too are enamoured with sex and genitalia. After all, procreation (self-replication) is the central theme in biology, and we tend to find it more fun when more than one individual is involved. Especially when these individuals differ anatomically into categories, in our case, two types, since that is what's most familiar to us. As far as I know, no lineage has evolved obligatory triple conjugations of three different mating types, although suc........ Read more »

  • November 21, 2009
  • 12:41 AM

Greenwash, blackwash: two faces of conservation evil

by CJA Bradshaw in ConservationBytes

Beware false prophets, and especially those masquerading as conservationists (or at least ‘green’) when they are not, in fact, doing anything for conservation at all. But this blog site isn’t about typical greenie evil-corporation-making-a-mess-of-the-Earth sermons (there are plenty of those); it’s instead about real conservation science that has/should/could have a real biodiversity benefits. This is [...]... Read more »

Koh, L., Ghazoul, J., Butler, R., Laurance, W., Sodhi, N., Mateo-Vega, J., & Bradshaw, C. (2009) Wash and Spin Cycle Threats to Tropical Biodiversity. Biotropica. DOI: 10.1111/j.1744-7429.2009.00588.x  

  • November 20, 2009
  • 10:15 PM

Towards a Poetic Electronic Nose

by Michael Long in Phased

Kenji Yamamoto (International Medical Center of Japan, Tokyo) and coworkers have developed an electronic nose that can discriminate between yeast and bacteria, based on the volatile chemicals they emit. This news feature was written on November 20, 2009.... Read more »

Fujioka, K., Arakawa, E., Kita, J.-i., Aoyama, Y., Okuda, T., Manome, Y., & Yamamoto, K. (2009) Combination of Real-Value Smell and Metaphor Expression Aids Yeast Detection. PLoS ONE, 4(11). DOI: 10.1371/journal.pone.0007939  

  • November 20, 2009
  • 11:23 AM

WiFi Body Scale: Tweeting Your Way to Less Pounds?

by Travis Saunders, MSc in Obesity Panacea

Travis and I often remind our readers that adopting healthy behaviours is the goal, even if weight loss does not occur. That is, simply by improving your current diet and increasing your daily physical activity will make you healthier and reduce your chance of countless diseases regardless of whether or not the number on your scale budges. However, the huge caveat to this notion is that individuals who adopt these healthy behaviours AND manage to lose at least 5-10% of their weight will benefit ........ Read more »

VanWormer JJ, Martinez AM, Martinson BC, Crain AL, Benson GA, Cosentino DL, & Pronk NP. (2009) Self-weighing promotes weight loss for obese adults. American journal of preventive medicine, 36(1), 70-3. PMID: 18976879  

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