Post List

Biology posts

(Modify Search »)

  • March 26, 2015
  • 02:42 PM
  • 10 views

March 26, 2015

by Erin Campbell in HighMag Blog

The actin cytoskeleton at the leading edge of a crawling cell has been a source of both scientific fascination and stunning images for biologists. Today’s image is from a paper that sheds light on how that complex structure is generated. The outermost region of a crawling cell’s cortex is called the lamellipodium, and it depends on a complex actin cytoskeleton for its structure and rapid dynamics. The generation of branched actin filaments at lamellipodia requires the activity of the ........ Read more »

  • March 26, 2015
  • 02:20 PM
  • 20 views

High-fat diet causes brain inflammation and alters behavior

by Dr. Jekyll in Lunatic Laboratories

We hear in the media all the time, obesity is effecting our health. In most cases when we talk obesity we are talking about heart disease, sedentary activity, or chronic overeating. But what if a high-fat diet — regardless of obesity — has more than just an affect on your waistline? What if the consumption of fatty foods can change your behavior and your brain?... Read more »

Bruce-Keller, A., Salbaum, J., Luo, M., Blanchard, E., Taylor, C., Welsh, D., & Berthoud, H. (2015) Obese-type Gut Microbiota Induce Neurobehavioral Changes in the Absence of Obesity. Biological Psychiatry, 77(7), 607-615. DOI: 10.1016/j.biopsych.2014.07.012  

  • March 26, 2015
  • 09:41 AM
  • 14 views

What’s the Answer? (alignment editors)

by Mary in OpenHelix

This week’s highlighted question is from the Bioinformatics discussion area at Reddit. There are a range of topics discussed in that subreddit, and some of the tool-specific ones are very helpful in learning about new software. What are some of the best multiple alignment editors that allow for manual editing? Cross-platform/open-source would be preferred. –AtlasAnimated […]... Read more »

  • March 26, 2015
  • 08:54 AM
  • 19 views

Angelina Jolie’s Preemptive Strike Against Cancer

by Bill Sullivan in The 'Scope

Actress Angelina Jolie has parts of her body surgically removed in an effort to avoid cancer. Brave or crazy?
... Read more »

  • March 26, 2015
  • 07:50 AM
  • 26 views

Watching a paradigm shift in neuroscience

by Björn Brembs in bjoern.brembs.blog

When I finished my PhD 15 years ago, the neurosciences defined the main function of brains in terms of processing input to compute output: “brain function is ultimately best understood in terms of input/output transformations and how they are produced” […] ↓ Read the rest of this entry...... Read more »

  • March 26, 2015
  • 07:39 AM
  • 21 views

Autism increases risk of nonaffective psychotic disorder and bipolar disorder

by Paul Whiteley in Questioning Answers

Published at the same time and in the same journal as the 'MoBa does bowel issues in autism' paper from Bresnahan and colleagues [1], the study results from Jean-Paul Selten et al [2] reporting that "A diagnosis of ASD [autism spectrum disorder] is associated with a substantially increased risk for NAPD [nonaffective psychotic disorder] and BD [bipolar disorder]" has, at the time of writing this post, received little or no press attention in comparison despite ........ Read more »

  • March 26, 2015
  • 07:00 AM
  • 22 views

http://www.united-academics.org/magazine/health-medicine/coffees-dirty-secret-like-carcinogens-with-that/

by Elisabeth Buhl Thubron in United Academics

Furans are coffee’s dirty little secret. Although we can thank them for the pleasant aroma and delicious flavour of freshly brewed coffee, furans have been labelled as a possible human carcinogen (cause of cancer) in disguise by food safety agencies. How many are in there
depends on how you like your cup of Joe.... Read more »

  • March 26, 2015
  • 12:38 AM
  • 38 views

The Smell of Stress and Fear

by Aurametrix team in Olfactics and Diagnostics

Can we recognize if people around us are stressed, anxious or fearful without observing their facial expressions, body language and actions or hearing their voice and messages? Can we understand if we are stressed ourselves without assessing our heart rate, blood pressure, noticing dry throat, sweating, drops or surges in energy? Yes, we can - by using our nose - as humans, too, recognize and transmit their emotions through chemical senses.When we are stressed or panic we become more sensit........ Read more »

Haegler, K., Zernecke, R., Kleemann, A., Albrecht, J., Pollatos, O., Brückmann, H., & Wiesmann, M. (2010) No fear no risk! Human risk behavior is affected by chemosensory anxiety signals. Neuropsychologia, 48(13), 3901-3908. DOI: 10.1016/j.neuropsychologia.2010.09.019  

Prehn-Kristensen A, Wiesner C, Bergmann TO, Wolff S, Jansen O, Mehdorn HM, Ferstl R, & Pause BM. (2009) Induction of empathy by the smell of anxiety. PloS one, 4(6). PMID: 19551135  

  • March 25, 2015
  • 05:59 PM
  • 31 views

Immunotherapy, a promising new treatment of Alzheimer’s disease

by Dr. Jekyll in Lunatic Laboratories

Alzheimer’s disease, it slowly takes things away from the person without giving anything back. Right now there is no cure and at best we can slow the progression in some cases. Time is always a factor and no two cases are the same. However, new treatments are in the works and a new study has revealed that a single dose of an immunotherapy reverses memory problems in an animal model of Alzheimer’s disease.... Read more »

  • March 25, 2015
  • 05:57 PM
  • 27 views

MoBa does bowel issues in autism

by Paul Whiteley in Questioning Answers

'MoBa' in the title of this post, refers to the Norwegian Mother and Child Cohort Study and a handy resource which has already impacted on autism research (see here for example).Now MoBa has turned its epidemiological clout to an issue which less and less is encountering scientific resistance: are gastrointestinal (GI) symptoms over-represented when it comes to a diagnosis of autism? Further, when do such bowel issues start to present?The answer, shown in the paper by Michaeline B........ Read more »

Bresnahan, M., Hornig, M., Schultz, A., Gunnes, N., Hirtz, D., Lie, K., Magnus, P., Reichborn-Kjennerud, T., Roth, C., Schjølberg, S.... (2015) Association of Maternal Report of Infant and Toddler Gastrointestinal Symptoms With Autism. JAMA Psychiatry. DOI: 10.1001/jamapsychiatry.2014.3034  

  • March 25, 2015
  • 01:03 PM
  • 31 views

Cracking the blood-brain barrier with magnetic nanoparticles

by Dr. Jekyll in Lunatic Laboratories

The blood-brain barrier, the thorn in the side of medicine. It makes using drugs directed for the brain ineffective at best and unusable at worst. This barrier runs inside almost all vessels in the brain and protects it from elements circulating in the blood that may be toxic to the brain. This barrier means that currently 98% of therapeutic molecules are also unable to cross to the brain. However, researchers now say magnetic nanoparticles can open the blood-brain barrier and deliver molecules ........ Read more »

  • March 25, 2015
  • 09:38 AM
  • 43 views

Video Tip of the Week: Protein structure information for public outreach. Really.

by Mary in OpenHelix

This week’s tip isn’t about a specific tool–but a really interesting look at how a tool was used in the context of some general public outreach messaging. Recently I posted about Aquaria, a new tool available to let biologists explore protein structures, mutations, and domains in user-friendly ways. But an interesting example of how the […]... Read more »

O'Donoghue Seán I, Maria Kalemanov, Christian Stolte, Benjamin Wellmann, Vivian Ho, Manfred Roos, Nelson Perdigão, Fabian A Buske, Julian Heinrich, & Burkhard Rost. (2015) Aquaria: simplifying discovery and insight from protein structures. Nature Methods, 12(2), 98-99. DOI: http://dx.doi.org/10.1038/nmeth.3258  

  • March 25, 2015
  • 08:00 AM
  • 34 views

This Nose Knows

by Mark Lasbury in As Many Exceptions As Rules

Evolution has given the sperm whale the most amazing head in the animal kingdom. They’ve got the biggest brain – all 18 lb.s of it. It has 1900 liters of sperm oil that almost caused in the extinction of the animal. It has one nostril that’s offset on its head, making the whale asymmetric. But most impressively, he can change the density of his head to help him dive or surface, and to do it he uses the same organ he uses for echolocation!... Read more »

  • March 25, 2015
  • 05:33 AM
  • 38 views

Autism and depression: interlinked?

by Paul Whiteley in Questioning Answers

"A possible implication is that interventions aimed at either autism symptoms or symptoms of depression may improve the other."That was the intriguing statement made by Per Normann Andersen and colleagues [1] who "investigated the course of and association among changes in autism symptoms, depression symptoms and executive functions (EF) in children with high-functioning autism (HFA)." Aside from frowning a little at the mention of the concept of 'high-functioning' I assume to denote those ........ Read more »

  • March 24, 2015
  • 03:08 PM
  • 44 views

The Rise of Evolutionary Biology Can Be Attributed To ... A Harry Potter Character?

by Jente Ottenburghs in Evolutionary Stories

The correspondence between Edgar Anderson and Ernst Mayr revealed a peculiar fact.... Read more »

  • March 24, 2015
  • 01:44 PM
  • 38 views

Milk, not just for your bones, for your brain

by Dr. Jekyll in Lunatic Laboratories

Milk, depending on who you ask it’s either great or the devil. In the US drinking milk is common; not so much in other parts of the world. This has lead to questions about why we even drink milk and how real its reported health claims actually are. Well new research has found a correlation between milk consumption and the levels of a naturally-occurring antioxidant called glutathione in the brain in older, healthy adults.... Read more »

Choi, I., Lee, P., Denney, D., Spaeth, K., Nast, O., Ptomey, L., Roth, A., Lierman, J., & Sullivan, D. (2014) Dairy intake is associated with brain glutathione concentration in older adults. American Journal of Clinical Nutrition, 101(2), 287-293. DOI: 10.3945/ajcn.114.096701  

  • March 24, 2015
  • 10:11 AM
  • 34 views

Global Warming Turns Rainforest Leaves into Junk Food

by Elizabeth Preston in Inkfish



Like those breakfast cereals that look healthy on the box but have even more sugar inside than Cocoa Puffs, some rainforest trees engage in false advertising. It's not their fault—it's ours. Climate change has made their leaves less nutritious than they used to be. And the animals who live off of those trees don't exactly have another store to shop at.

Experiments in labs and greenhouses have given scientists mixed answers about what happens to plant tissues in a changing climate. So pr........ Read more »

Rothman, J., Chapman, C., Struhsaker, T., Raubenheimer, D., Twinomugisha, D., & Waterman, P. (2015) Long-term declines in nutritional quality of tropical leaves. Ecology, 96(3), 873-878. DOI: 10.1890/14-0391.1  

  • March 24, 2015
  • 06:52 AM
  • 33 views

Smell- Our Underrated Sense

by RAZ Rebecca A. Zarate in United Academics

Your sense of smell might help you find the perfect partner.... Read more »

Wedekind, C., Seebeck, T., Bettens, F., & Paepke, A. (1995) MHC-Dependent Mate Preferences in Humans. Proceedings of the Royal Society B: Biological Sciences, 260(1359), 245-249. DOI: 10.1098/rspb.1995.0087  

  • March 24, 2015
  • 05:37 AM
  • 43 views

More extremes of a limiting diet and autism

by Paul Whiteley in Questioning Answers

In a previous post a while back, I discussed some examples in the peer-reviewed literature of where a self-limiting diet in the extreme can lead to with autism in mind. Today, I'm adding a further example of what food faddism might mean, to further forward the point that "a low threshold for vitamin level testing should be undertaken in autistic spectrum disorder cases, highlighting the importance of enquiring about dietary habits."That last quote comes from the paper in question by Emma Du........ Read more »

  • March 23, 2015
  • 04:55 PM
  • 42 views

A Dottyback in Damsel Clothing: Color Mimicking in Fish

by Melissa Chernick in Science Storiented

I was looking around for a study and stumbled upon one about fish mimicry in Current Biology. What first caught my attention was its use of a video abstract. What a cool idea amped up a few notches by beginning with music reminiscent of Game of Thrones. Then I started to think back about posts I've done on predator-prey relationships and could only come up with 1, the One-Third for the Birds post back in 2012. Clearly it is time to revisit that topic. Oh, and while we’re at it, we’ll ........ Read more »

F. Cortesi, W.E. Feeney, M.C.O. Ferrari, P.A. Waldie, G.A.C. Phillips, E.C. McClure, H.N. Sköld, W. Salzburger, N.J. Marshall, & K.L. Cheney. (2015) Phenotypic Plasticity Confers Multiple Fitness Benefits to a Mimic. Current Biology, 25(1-6). info:/10.1016/j.cub.2015.02.013

join us!

Do you write about peer-reviewed research in your blog? Use ResearchBlogging.org to make it easy for your readers — and others from around the world — to find your serious posts about academic research.

If you don't have a blog, you can still use our site to learn about fascinating developments in cutting-edge research from around the world.

Register Now

Research Blogging is powered by SMG Technology.

To learn more, visit seedmediagroup.com.