Scientists finally reveal the Law of Urination, giving us vast insight into why most mammals take the same amount of time to relieve themselves.... Read more »
Patricia J. Yang, Jonathan C. Pham, Jerome Choo, & David L. Hu. (2013) Law of Urination: all mammals empty their bladders over the same duration. eprint arXiv:1310.3737. arXiv: 1310.3737v2
This morning, the world woke up to the news that Scientists discover the difference between male and female brains Britain’s Independent today actually made that their front page. They went on to discuss “the hardwired difference that could explain why men are ‘better at map reading’”. The rest of the world’s media were no less […]The post Men, Women, and Big PNAS Papers appeared first on Neuroskeptic.... Read more »
Ingalhalikar, M., & et al. (2013) Sex differences in the structural connectome of the human brain. PNAS. DOI: 10.1073/pnas.1316909110
A new study shows how midges swept along by strong winds rapidly carried the Schmallenberg virus to farms throughout Europe. ... Read more »
Sedda L, & Rogers DJ. (2013) The influence of the wind in the Schmallenberg virus outbreak in Europe. Scientific Reports, 3361. PMID: 24285292
The hormone testosterone has significant effects on brain function and structure.In the next few posts, I will review several recent research studies related to testosterone.Testosterone deficiency or hypogonadism is more common in obese compared to non-obese.The mechanism for this relationship is unclear. However, a recent study has outlined the effect of testosterone replacement on body weight.AA Yassin and G Doros examined the longitudinal changes in weight, waist circumference and body mass ........ Read more »
Yassin A, & Doros G. (2013) Testosterone therapy in hypogonadal men results in sustained and clinically meaningful weight loss. Clinical obesity, 3(3-4), 73-83. PMID: 24163704
Vigen R, O'Donnell CI, Barón AE, Grunwald GK, Maddox TM, Bradley SM, Barqawi A, Woning G, Wierman ME, Plomondon ME.... (2013) Association of testosterone therapy with mortality, myocardial infarction, and stroke in men with low testosterone levels. JAMA : the journal of the American Medical Association, 310(17), 1829-36. PMID: 24193080
Diseases are an interesting thing. The development and location of an area can drastically change the types of diseases present, and which are most deadly. If you look at global health maps, such as HealthMap, you can see how drastically different outbreaks are occurring in different areas. For example, cholera has been a major concern … Continue reading »... Read more »
G. M. MOSHER, M. O. SMITH, J. L. ALBRECHT, & V. P. SALAKA. (2013) Treponemal Disease, Tuberculosis and Subsistence-settlement Pattern in the Late Woodland Period West-central Illinois. International Journal of Osteoarchaeology. DOI: 10.1002/oa.2344
If turtles had realtors, their motto would also be "Location, location, location!"—but not because they care about a scenic vista. The spot a mother turtle chooses to dig her nest determines whether her young will be males or females. This might even be the most important factor in her decision.A female painted turtle (Chrysemys picta) is not an over-involved parent. She digs a hole in the dirt, lays a batch of eggs there, and buries them. Then she returns to her freshwater life without giving........ Read more »
Timothy S. Mitchell, Jessica A. Maciel, & Fredric J. Janzen. (2013) Does sex-ratio selection influence nest-site choice in a reptile with temperature-dependent sex determination?. Proceedings of the Royal Society B. DOI: 10.1098/rspb.2013.2460
Shapes of Things to Come: Exotic Shapes for Liquid Drops Have Many Possible Uses
Stabilizing Liquid Drops in Nonequilibrium Shapes by the Interfacial Jamming of Nanoparticles
Polymer Scientists Jam Nanoparticles, Trapping Liquids into Useful Shapes
University of Massachusetts Amherst... Read more »
Cui M, Emrick T, & Russell TP. (2013) Stabilizing liquid drops in nonequilibrium shapes by the interfacial jamming of nanoparticles. Science (New York, N.Y.), 342(6157), 460-3. PMID: 24159042
Some observations come before you realize how important they are. Only later do you slap your forehead and realize that you should have taken more detailed notes, because the likelihood of you seeing such a thing again is slim. This is why I encourage everybody interested in wildlife to take down field notes.
When I was in high school, every afternoon when I got home I would take a ... Read more »
S. P. Graham. (2013) How frequently do Cottonmouths (Agkistrodon piscivorus) bask in trees?. Journal of Herpetology, 428-431. DOI: 10.1670/12-082
Recently, researchers from Mount Sinai Hospital in Toronto attempted to determine whether it is actually possible to be both healthy and obese at the same time. This report recently popped up in the news after an editorial published in Annals of Internal Medicine declared that “healthy obesity is a myth“.... Read more »
Kramer CK, Zinman B, & Retnakaran R. (2013) Are Metabolically Healthy Overweight and Obesity Benign Conditions?: A Systematic Review and Meta-analysis. Annals of internal medicine, 159(11), 758-69. PMID: 24297192
Private companies are selling a direct-to-consumer service that scans your genome for disease-associated variations in your DNA sequence. Who wouldn’t want to know their future risk of developing a disease? If the appropriate preventative measures are taken now then perhaps disease onset can be delayed? ... Read more »
Chua EW, & Kennedy MA. (2012) Current State and Future Prospects of Direct-to-Consumer Pharmacogenetics. Frontiers in pharmacology, 152. PMID: 22934000
Valles SA. (2012) Should direct-to-consumer personalized genomic medicine remain unregulated?: a rebuttal of the defenses. Perspectives in biology and medicine, 55(2), 250-65. PMID: 22643762
Climate change and the future of terrestrial invertebrates What will happen to terrestrial invertebrate animals as the world climate changes? Who will survive? Who will change? A recent study tries to give some hints... Read more »
Schilthuizen M., Kellermann V. (2013) Contemporary climate change and terrestrial invertebrates: evolutionary versus plastic changes. Evolutionary Applications. DOI: 10.1111/eva.12116
No, that wasn’t a typo. Today I came across this petition for rulemaking to FSIS from the Physicians Committee for Responsible Medicine.
First off: PCRM has some great programs that promote research, animal welfare, and better medicine. The overall merit of their organization cannot be judged by a single program or campaign they have in place.
Now let’s tear this petition apart, because I actually had to check their website to make sure it was real, and not an over-the-top sati........ Read more »
Physicians Committee for Responsible Medicine. (2013) Re: Fecal Contamination of Poultry and Meat. USDA Petition for Rulemaking. info:/
Researchers have found that the size of opening for light in our eye (pupil) changes even if we are only thinking of bright and dark objects and/or scenes.
“Visual imagery is a private and subjective experience which is not accompanied by strongly felt or visible physiological changes,” explained psychological scientist and lead researcher Bruno Laeng of the University of Oslo. “It is a particularly d........ Read more »
Staphylococcus aureus, or “Staph” as I’m going to call it, is a spherical bacterium that grows in grape-like bunches. It is mainly found in the nose and skin of humans and for most of the time is completely harmless there. Staph can cause many infections if it gains access to areas of the body that it’s not normally in, like a cut in the skin. From abscesses to boils and full on systemic infections (that’s infecting all of the major organs and blood), it’s a ........ Read more »
Thammavongsa V, Missiakas DM, & Schneewind O. (2013) Staphylococcus aureus degrades neutrophil extracellular traps to promote immune cell death. Science (New York, N.Y.), 342(6160), 863-6. PMID: 24233725
Brinkmann V, & Zychlinsky A. (2012) Neutrophil extracellular traps: is immunity the second function of chromatin?. The Journal of cell biology, 198(5), 773-83. PMID: 22945932
Galaxies like our Milky Way make stars. In order to accomplish that, the galaxy must first have clouds of hydrogen and helium. But gas clouds floating in from intergalactic space are usually deflected by the galaxy’s electromagnetic field.... Read more »
Sketch of the human lungsResearchers at Columbia University Medical Center announced today that they have succeeded in transforming human induced pluripotent stem cells into functional lung and airway cells.The advance, has significant potential for modeling lung disease, screening drugs, studying human lung development, and, ultimately, generating lung tissue for transplantation."Researchers have had relative success in turning human stem cells into heart cells, pancreatic beta cells, inte........ Read more »
Sarah X L Huang, Mohammad Naimul Islam, John O'Neill, Zheng Hu, Yong-Guang Yang, Ya-Wen Chen, Melanie Mumau, Michael D Green, Gordana Vunjak-Novakovic, Jahar Bhattacharya . (2013) Efficient generation of lung and airway epithelial cells from human pluripotent stem cells. Nature Biotechnology. info:/
Paneth cellsIn a newly published study, researchers at MIT and Brigham and Women's Hospital have shown that they can grow unlimited quantities of intestinal stem cells, then stimulate them to develop into nearly pure populations of different types of mature intestinal cells. Using these cells, scientists could develop and test new drugs to treat diseases such as ulcerative colitis.The small intestine, like most other body tissues, has a small store of immature adult stem cells that can diffe........ Read more »
Xiaolei Yin, Henner F Farin, Johan H van Es, Hans Clevers, Robert Langer . (2013) Niche-independent high-purity cultures of Lgr5 intestinal stem cells and their progeny. Nature . DOI: 10.1038/nmeth.2737
Dr John DickPhoto credit: UHNResearchers and surgeons at the Princess Margaret Cancer Centre announced today that they have discovered a promising new approach to treating colorectal cancer by disarming the gene that drives self-renewal in stem cells that are the root cause of disease, resistance to treatment and relapse.Colorectal cancer is the third leading cause of cancer-related death in the Western world."This is the first step toward clinically applying the principles of cancer stem c........ Read more »
Antonija Kreso, Peter van Galen, Nicholas M Pedley, Evelyne Lima-Fernandes, Catherine Frelin, Thomas Davis, Liangxian Cao, Ramil Baiazitov, Wu Du, Nadiya Sydorenko, Young-Choon Moon, Lianne Gibson, Yadong Wang, Cherry Leung, Norman N Iscove,. (2013) Self-renewal as a therapeutic target in human colorectal cancer. Nature. DOI: 10.1158/1538-7445.AM2012-3496
Adoption research can provide a unique perspective for understanding genetic and environmental contributions to brain disorders.In the adoption process, biological (genetic) influences occur outside the biological environment.A variety of adoption studies show genetic influences for risk of childhood and adult brain and behavior disorders. Adoptees with a biological parent with alcohol or drug abuse have higher rates of substance disorders even when raised in adoptive family environments without........ Read more »
Yoon G, Westermeyer J, Warwick M, & Kuskowski MA. (2012) Substance use disorders and adoption: findings from a national sample. PloS one, 7(11). PMID: 23166740
Humans have a visual bias: everything in vision seems easy and natural to us, and it can seem a bit of a mystery why computers are so bad at it. But there is a reason such a massive chunk (about 30%) of cortex is devoted to it. It’s really hard! To do everything that it […]... Read more »
Frome A, Corrado GS, Shlens J, Bengio S, Dean J, Ranzato M, & Mikolov T. (2013) DeViSE: A Deep Visual-Semantic Embedding Model. NIPS. info:/
Dean T, Ruzon MA, Segal M, Shlens J, Vijayanarasimhan S, & Yagnik J. (2013) Fast, Accurate Detection of 100,000 Object Classes on a Single Machine. Proceedings of IEEE Conference on Computer Vision and Pattern Recognition. DOI: 10.1109/CVPR.2013.237
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