Biomedical

Category archives for Biomedical

Foreigner or native-born? Your immune system discriminates between them, as do those of bacteria. Yes indeed, bacteria do have immune systems – pretty complex ones at that. And like any useful immune system, the bacterial ones must have a good technique for distinguishing “foreign” from “self.” You may even have heard of the bacterial immune…

Dr. Gabriele D’Uva is finishing up his postdoctoral research at the Weizmann Institute. Here is his account of three years of highly successful research on regenerating heart cells after injury. Among other things, it is the story of the way that different ideas from vastly different research areas can, over the dinner table or in…

Could artificial sweeteners be helping cause the very thing they are supposed to prevent? They may well do so, and you can probably blame your microbiota – those masses of mostly-friendly bacteria that live in your gut. According to a paper by Weizmann Institute scientists that appeared today in Nature, artificial sweeteners not only encourage…

Since mental health problems are estimated to affect some 10% of the world’s population, it stands to reason that if you don’t suffer from depression, anxiety or bipolar disorder yourself, you are probably close to someone who does. So you might be pleased to read about a new finding that could eventually lead to a…

Save the Bacteria?

Science on Tap, which happened in Tel Aviv last Weds. eve, was as great a success as ever. Ariela Saba, one of our Weizmann writers, attended one of the talks. Here is her report: Right around now – in some 55 bars all around Tel Aviv and Jaffa – Weizmann Institute scientists are starting their…

A Matter of Time

  The next time you reach into the fridge for a midnight snack – take heed: New research by Weizmann Institute scientists has shown that the time at which you eat your meals might have a profound effect on your liver triglyceride levels. Their research was conducted on mice, but if found to be true…

Science Haiku 3×3

More science-themed haikus. I seem to keep writing them because we tend to put out three “mini press releases” at a time (a relic of the days when they were printed on two sides of a fold-up page and mailed). So I could pick just one to blog about, or I could try to fit…

A Genetic Balance of Terror

Cancer, we are told, is a disease of the genes. It originates in mutations in the DNA. But a paper published by a Weizmann Institute group in Cell Reports flips that idea sideways by about 90 degrees: For at least some types of the disease, the healthy, non-mutated version of a gene is no less…

First, there was the great hope of induced pluripotent stem cells (iPSCs), and then there was the inevitable letdown. When the announcement came, in 2006, that simple adult skin cells could be reprogrammed – reverted back to an embryonic stem cell state by the addition of just four genes – it seemed like an almost…

Overturning Ideas on Cancer

Another advance in cancer research is featured on our website this week. Among other things, this one highlights the dangers of assuming causation from correlation. Prof. Dov Zipori and his team were looking at adult stem cells in the bone marrow. These hold a lot of potential for treating many kinds of disease but, like…