Post List

  • September 10, 2009
  • 11:26 PM

Bird sex gene identified

by hilaryml in Chicken or Egg blog

 In mammals, sex is determined by genes contained on sex chromosomes – males have an X and a Y chromosome, and females have two X chromosomes.  In birds things are quite different, as it is the male that has two of the same type of sex chromosome.  Male birds have two Z chromosomes and female birds have a [...]... Read more »

Smith, C., Roeszler, K., Ohnesorg, T., Cummins, D., Farlie, P., Doran, T., & Sinclair, A. (2009) The avian Z-linked gene DMRT1 is required for male sex determination in the chicken. Nature, 461(7261), 267-271. DOI: 10.1038/nature08298  

  • September 10, 2009
  • 10:00 PM

Single dose of 2009 H1N1 vaccine immunogenic in adults

by Vincent Racaniello in virology blog

An Australian group has reported results of a clinical trial to determine the safety and immunogenicity of a 2009 pandemic H1N1 influenza virus vaccine.... Read more »

Michael E. Greenberg, M.D., M.P.H., Michael H. Lai, B.Med.Sc., M.B., B.S., M.Med.Sc., Gunter F. Hartel, M.S., Ph.D., Christine H. Wichems, Ph.D., Charmaine Gittleson, B.Sc., M.B., B.Ch., Jillian Bennet, M.Sc., M.P.H., Gail Dawson, B.Pharm., Wilson Hu, M.D. (2009) Response after One Dose of a Monovalent Influenza A (H1N1) 2009 Vaccine. New England Journal of Medicine. info:/10.1056/NEJMoa0907413

  • September 10, 2009
  • 09:21 PM

Molecule of the month presents: Hemagglutinin and Neuramidase

by Atila Iamarino in Influenza A (H1N1) Blog – English

Molecule of the month is an initiative of the RCSB PDB (A Resource for Studying Biological Macromolecules – Protein Data Bank) a protein structure bank. Every month, David Goodsell chooses an interesting structure and describes it, besides illustrating it very well. The illustrations are made available in a high resolution image that may be downloaded.
Goodsell [...]... Read more »

  • September 10, 2009
  • 09:21 PM

In From the Cold

by Journal Watch Online in Journal Watch Online

Scientists report on ecological changes in the Arctic

... Read more »

Post, E., Forchhammer, M., Bret-Harte, M., Callaghan, T., Christensen, T., Elberling, B., Fox, A., Gilg, O., Hik, D., Hoye, T.... (2009) Ecological Dynamics Across the Arctic Associated with Recent Climate Change. Science, 325(5946), 1355-1358. DOI: 10.1126/science.1173113  

  • September 10, 2009
  • 08:30 PM

Microalgae: Biodiesel Factories of the Future?

by Michael Long in Phased

Laurent Lardon (INRA, the French National Institute for Agricultural Research) and coworkers have investigated the prospects of harvesting microalgae as biodiesel production factories, and recommend technical improvements necessary to improve their fuel production efficiency and reduce their environmental impact. This news feature was written on September 10, 2009.... Read more »

Lardon, L., Hélias, A., Sialve, B., Steyer, J. P., & Bernard, O. (2009) Life-Cycle Assessment of Biodiesel Production from Microalgae. Environmental Science , 43(17), 6475-6481. DOI: 10.1021/es900705j  

  • September 10, 2009
  • 04:19 PM

The cheaper sex and extinction…for Imperial Eagles

by Scott A. in JournOwl

Manipulating egg quality and brood mates  is a strategy that is not uncommon for birds.  In fact, this is an important tactic in the survival of species when food is scarce and territories are poor.  The idea is that deteriorating environmental conditions will drive parents to invest more resources in the sex that maximizes their [...]... Read more »

  • September 10, 2009
  • 03:54 PM

Predicting norovirus epidemics

by iayork in Mystery Rays from Outer Space

Norovirus (from J Virol. 82:2079-2088 (2008))

Noroviruses cause an unpleasant, but rarely serious, diarrhea and vomiting-type disease — “cruise ship flu”1 is one term for it.  As well as cruise ships, nursing homes and hospitals and other more or less closed systems also see outbreaks of norovirus disease fairly regularly, and as you’d expect the elderly [...]... Read more »

  • September 10, 2009
  • 03:28 PM

Dispersed or dangerous?

by pm in The Poor Man's Smart Bomb

If a good deal of the research into terrorism and violent non-state actors is to be believed, the trend towards such groups acting in a dispersed, networked fashion makes them highly effective but largely invulnerable to interdiction or counter-attack by the sluggish, unwieldy, hierarchically structured forces of the state arrayed against them. Such assertions [...]... Read more »

  • September 10, 2009
  • 02:50 PM

Sea Stars on Acid

by jebyrnes in I'm a chordata, urochordata!

As an ecologist working in temperate climes, I’ve been following the ocean acidification field with some interest. It’s always been obvious to me how acidification has enormous ramifications for coral reefs and other tropical marine ecosystems. They exist in warm waters already, often close to their thermal maxima. Acidifying the water [...]... Read more »

  • September 10, 2009
  • 02:27 PM

Ancient Leishmaniasis From Coyo Oriente Cemetery In Chile

by in

I recently completed a medical parasitology course as part of my medical education. One of the diseases we discussed was leishmaniasis. Leishmaniasis is a zoonotic disease that is transferred to humans from reservoir hosts via the sand fly vector. The sand fly injects the promastigote form of the parasite, and the parasite invades white blood [...]... Read more »

Costa, M., Matheson, C., Iachetta, L., Llagostera, A., & Appenzeller, O. (2009) Ancient Leishmaniasis in a Highland Desert of Northern Chile. PLoS ONE, 4(9). DOI: 10.1371/journal.pone.0006983  

  • September 10, 2009
  • 01:18 PM

Physics of Life Reviews

by Greg Hickok in Talking Brains

I have a new review paper on the functional anatomy of language coming out in a journal called Physics of Life Reviews published by Elsevier. Before I was invited to contribute an article I had never heard of this journal but after looking through a few issues I found that it is pretty interesting. The articles are intended for a broad audience and cover everything from neural coding to computational modeling of pandemic influenza outbreaks. In the last couple of years, language issues have b........ Read more »

  • September 10, 2009
  • 12:30 PM

The multifaceted p53, human mutation rates and more in my MolBio picks of the week from RB

by Alejandro Montenegro-Montero in MolBio Research Highlights

Another week has gone by and some very interesting molbio blog posts have been aggregated into Every week [see my inaugural post on the matter], I'll select some blog posts I consider particularly interesting in the field of molecular biology [see here to get a sense of the criteria that will be used], briefly describe them and list them here for you to check out.This week,... Read more »

Suzuki, H., Yamagata, K., Sugimoto, K., Iwamoto, T., Kato, S., & Miyazono, K. (2009) Modulation of microRNA processing by p53. Nature, 460(7254), 529-533. DOI: 10.1038/nature08199  

Sun, N., Panetta, N., Gupta, D., Wilson, K., Lee, A., Jia, F., Hu, S., Cherry, A., Robbins, R., Longaker, M.... (2009) Feeder-free derivation of induced pluripotent stem cells from adult human adipose stem cells. Proceedings of the National Academy of Sciences. DOI: 10.1073/pnas.0908450106  

  • September 10, 2009
  • 11:40 AM

Football players who rush penalty kicks are less likely to score

by Christian Jarrett in BPS Research Digest

Taking a penalty in an international football competition must be one of the most tense moments an athlete can face. Even though the odds are stacked against the goal-keeper, the world's best attacking stars often under-perform. In psychological jargon - they choke.

According to a new analysis of all the penalty shoot-outs held in previous World Cups, European Championships and the UEFA Champions League, issues of timing appear to be crucial to the success or not of a penalty kick. Sports ........ Read more »

  • September 10, 2009
  • 09:28 AM

Why don’t scientists share data?

by Duncan Hull in O'Really?

As Vince Smith once put it [1] data are the fuel of Science:
“The fabric of science is changing, driven by a revolution in digital technologies that facilitate the acquisition and communication of massive amounts of data. This is changing the nature of collaboration and expanding opportunities to participate in science. If digital technologies are the [...]... Read more »

Schofield, P., Bubela, T., Weaver, T., Portilla, L., Brown, S., Hancock, J., Einhorn, D., Tocchini-Valentini, G., Hrabe de Angelis, M., & Rosenthal, N. (2009) Post-publication sharing of data and tools. Nature, 461(7261), 171-173. DOI: 10.1038/461171a  

Toronto International Data Release Workshop Authors. (2009) Prepublication data sharing. Nature, 461(7261), 168-170. DOI: 10.1038/461168a  

Bryn Nelson. (2009) Data sharing: Empty archives. Nature, 461(7261), 160-163. DOI: 10.1038/461160a  

  • September 10, 2009
  • 09:00 AM

Pandemic H1N1 influenza virus outcompetes seasonal strains in ferrets

by Vincent Racaniello in virology blog

Experiments have been done in ferrets to determine how the 2009 pandemic H1N1 strain interacts with seasonal H3N2 and H1N1 viruses.... Read more »

Perez, D., Sorrell, E., Angel, M., Ye, J., Hickman, D., Pena, L., Ramirez-Nieto, G,, Kimble, B., & Araya, Y. (2009) Fitness of Pandemic H1N1 and Seasonal influenza A viruses during Co-infection. PLoS Currents. info:other/RRN1011.2

  • September 10, 2009
  • 08:00 AM

Laughter’s the Best Remedy

by Shaheen Lakhan in Brain Blogger

Groucho Marx once said, “A clown is like an aspirin, only he works twice as fast.” Indeed, research suggests that humor can minimize our perceptions of physical pain. Various theoretical explanations have been offered to explain the analgesic effects of humor, and humor’s potential role in pain therapy appears promising.
Studies exploring the role of humor [...]... Read more »

Mobbs D, Greicius MD, Abdel-Azim E, Menon V, & Reiss AL. (2003) Humor modulates the mesolimbic reward centers. Neuron, 40(5), 1041-8. PMID: 14659102  

  • September 10, 2009
  • 07:06 AM

If it’s abstract you gel in, if it’s concrete you stand out..Or Why I compare myself to a man but not to men.

by sandygautam in The Mouse Trap

Mick Jagger via last.fmReaders of this blog will be familiar with research by Bargh et al that showed that priming with stereotypes led to assimilation of those traits by the primed subjects. To recall, when asked to wait, those primed with rudeness interrupted the experimenter more than those primed with patience/nicety primes. Also those primed with elderly stereotype walked more slowly, away from the experimenter after the end of the alleged experiment, than those in neutral condition. Thes........ Read more »

Dijksterhuis, A., Spears, R., Postmes, T., Stapel, D., Koomen, W., Knippenberg, A., & Scheepers, D. (1998) Seeing one thing and doing another: Contrast effects in automatic behavior. Journal of Personality and Social Psychology, 75(4), 862-871. DOI: 10.1037/0022-3514.75.4.862  

  • September 10, 2009
  • 02:29 AM

A Fish-Eat-Fish World

by Journal Watch Online in Journal Watch Online

Fish feed substitutes can keep aquaculture from depleting oceans

... Read more »

Naylor, R., Hardy, R., Bureau, D., Chiu, A., Elliott, M., Farrell, A., Forster, I., Gatlin, D., Goldburg, R., Hua, K.... (2009) Feeding aquaculture in an era of finite resources. Proceedings of the National Academy of Sciences, 106(36), 15103-15110. DOI: 10.1073/pnas.0905235106  

  • September 10, 2009
  • 12:09 AM

A Blight's Genome

by Keith Robison in Omics! Omics!

Normally this time of year I would be watching the weather forecasts checking for the dreaded early frost which slays tomato plants, often followed by weeks of mild weather that could have permitted further growth. Alas, this year that will clearly not be the case. A wet growing season and commercial stock contaminated with spores has led to an epidemic of late blight, and my tomato plants (as shown, with the night photography accentuating the horror) are being slaughtered. This weekend I'll ........ Read more »

BJ Haas et al. (2009) Genome sequence and analysis of the Irish potato famine pathogen Phytophthora infestans. Nature. info:/10.1038/nature08358

  • September 9, 2009
  • 11:16 PM

Prior immunity and flu

by Atila Iamarino in Influenza A (H1N1) Blog – English

I received a comment from Paulo Amaral with amazing questions, leading me to advance this post. As follows, you can find the questions and the answer explaining what is relevant:
Would the annual vaccination against flu be liable for the low number of reports in elders?
What is the efficacy of the vaccine produced by mettles of [...]... Read more »

Smith, G., Bahl, J., Vijaykrishna, D., Zhang, J., Poon, L., Chen, H., Webster, R., Peiris, J., & Guan, Y. (2009) From the Cover: Dating the emergence of pandemic influenza viruses. Proceedings of the National Academy of Sciences, 106(28), 11709-11712. DOI: 10.1073/pnas.0904991106  

Morens, D., Taubenberger, J., & Fauci, A. (2009) The Persistent Legacy of the 1918 Influenza Virus. New England Journal of Medicine, 361(3), 225-229. DOI: 10.1056/NEJMp0904819  

Yu, X., Tsibane, T., McGraw, P., House, F., Keefer, C., Hicar, M., Tumpey, T., Pappas, C., Perrone, L., Martinez, O.... (2008) Neutralizing antibodies derived from the B cells of 1918 influenza pandemic survivors. Nature, 455(7212), 532-536. DOI: 10.1038/nature07231  

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