Life Sciences and Chemistry
Articles and reports from the Life Sciences and chemistry area deal with applied and basic research into modern biology, chemistry and human medicine.
Valuable information can be found on a range of life sciences fields including bacteriology, biochemistry, bionics, bioinformatics, biophysics, biotechnology, genetics, geobotany, human biology, marine biology, microbiology, molecular biology, cellular biology, zoology, bioinorganic chemistry, microchemistry and environmental chemistry.
UMass scientist identifies gene that governs obesity, physical activity, sex behaviors in mice
Findings based on ’knock-out’ mice detailed in the journal Physiology and Behavior
A team led by University of Massachusetts Amherst researcher Deborah J. Good has identified a gene that appears to play a role in obesity, physical activity, and sex behaviors in mice. Good works with so-called “knock-out” mice, which have a specific gene deleted. Scientists then monitor the animals for changes in their physiology and behavior, in an effort to determine the gene’s role. H
On chip separation: large molecules pass the speed camera first
What molecule or particle passes the finishline first? A good way to split a fluid sample into its separate parts is: organize a contest in a micro-channel. The largest parts will pass the optical detector first, the smaller ones follow at short distance. This principle of ‘hydrodynamic chromatography’ is now also possible on a chip. ‘On-chip’ separation is faster, needs tiny samples and uses minimum of harmful solvents. Marko Blom developed this separation chip within the MESA+ research institute of
Identification of genes causing defects in vitamin B12 metabolism
Investigators at the University of Calgary and McGill University have identified genes that underlie two severe diseases of vitamin B12 metabolism. The two diseases, known as the cblA and cblB forms of methylmalonic aciduria, may produce brain damage, mental retardation and even death if not detected in infancy or early childhood.
Melissa Dobson, a graduate student at the University of Calgary working with Roy Gravel PhD in the Department of Biochemistry and Molecular Biology, is lead autho
Scientists discover gene ’signature’ for tumor’s tendency to spread
Researchers at Dana-Farber Cancer Institute and the Whitehead Institute have discovered a pattern of genetic activity in several types of primary tumors that appears to predict the likelihood that they will spread, or metastasize, to other parts of the body. If larger studies support these findings, this early indicator of life-threatening cancer spread might lead to a clinical test that would help determine appropriate treatment.
The study will be published by Nature Genetics on its
The tapeworm contraceptive
A tapeworm may be the unlikely source of a new contraceptive – 100% effective in either sex!
Despite intensive research, scientists have so far failed to find the perfect contraceptive for women – let alone men. However, a study in freshwater fish of the carp family has found a parasite, Ligula intestinalis, that makes the fish infertile. The infertility appears to be caused by a compound released by the parasite, which suppresses the production of eggs in females and sperm in males. P
Search for cholesterol absorption genes narrows to two chromosome regions
Findings with lab mice may lead to novel cholesterol-lowering drugs against heart disease
Two people eat the same egg, cheese and ham muffin for breakfast, yet one absorbs significantly more cholesterol into his or her blood than the other. Why?
The answer, and all of its implications for combating heart disease, remains stubbornly hidden within our DNA. In recent genetic studies with lab mice, however, researchers at The Rockefeller University have begun to close in on the culpr