Tag Archives: online

Researchers delve into the behavior of cohesins

Cohesins are protein complexes that join the two copies of each chromosome — called sister chromatids — to ensure that they are shared fairly between the daughter cells during cell division. In this way, each daughter cell receives exactly the same genetic information from the parent cell. Pds5 is a protein associated with cohesins; it binds cohesins along different chromosome regions. In vertebrates there are two variants of Pds5, Pds5A and Pds5B, not very well characterised to date…

Molecular marker predicts patients most likely to benefit longest from two popular cancer drugs

The U.S. Food and Drug Administration-approved drugs, gefitinib (Iressa) and erlotinib (Tarceva), are prescribed for lung and pancreatic cancer patients but only a few who have mutations in the EGFR gene usually benefit with a prolonged reduction of tumor size. The two drugs block the gene’s ramped-up protein production, but patients’ response to the drug varies widely — from no survival benefit to several years. The average is several months. …

Scientists analyze genetic makeup of human and mouse embryos in amazing detail

The technique could lead to earlier and more accurate diagnoses of genetic diseases, even when the embryo consists of only eight cells. The study was led by Guoping Fan, professor of human genetics and molecular biology and member of both the Jonsson Comprehensive Cancer Center and the Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research. The findings were published in the online edition of the journal Nature and will appear later in the print edition…

Genetic variants predicting aggressive prostate cancers identified

Their study was published in the online journal PLOS ONE in April. According to the authors, prostate cancer accounts for 20 percent of all cancers and 9 percent of cancer deaths. It is the most common cancer and was the second leading cause of cancer death in American men in 2012. "For most prostate cancer patients, the disease progresses relatively slowly," said study co-author Hui-Yi Lin, Ph.D., assistant member of the Chemical Biology and Molecular Medicine Program at Moffitt. …

Study finds Facebook helps users ‘Like’ themselves better

Spending a few minutes peeking at one’s Facebook profile reportedly elevates a person’s self-esteem but reduces their ambition to excel, according to researchers. The University of Wisconsin-Madison study that unearthed these social-media phenomena seemingly employed a controversial cognitive test to arrive at its findings, and also discovered the Facebook-borne ego boost lead to diminished ambition, or the desire to excel on subsequent cognitive evaluations. The study, “Self-affirmation underlies Facebook use,” was published in the June issue of the Journal of Media Psychology and was conducted by a team led by Catalina Toma. Toma is a UW-Madison assistant professor of communication arts. “Most have a very large audience of friends and they selectively present the best version of self, but they do so in an accurate manner,” Toma told ABC News of typical Facebook profiles. “We had people look at their own profiles for five minutes and found that they experienced a boost in self-esteem in a deep, unconscious level.” The study employed the widely-used, but still reportedly controversial Implicit Association Test, which requires participants to make snap word-based associations, reportedly said to reveal intensely personal truths, and ones about which test-takers may not even be aware on a conscious level. Also, the study correspondingly uncovered a tenuous correlation between the Facebook-induced self-esteem boost derived by those who briefly viewed their profile and the study participants' motivation to excel on a simple mathematical test taken afterward. “Facebook gives you a real good image of yourself, but you then don't have to look for that in other ways,” Toma reportedly said. “Your motivation to perform well might be reduced because you already feel really good.” According to the Toma team’s abstract, the study shows  “that Facebook profiles are self-affirming in the sense of satisfying users’ need for self-worth and self-integrity, “ and  “that Facebook users gravitate toward their online profiles after receiving a blow to the ego, in an unconscious effort to repair their perceptions of self-worth.” Click to read more on the Facebook study.source : http://www.foxnews.com/health/2013/06/02/study-finds-facebook-helps-users-like-themselves-better/