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.

Sheep stress programs lamb

Early life of fetus affects organs’ future health.

Sheep stressed in early pregnancy bear lambs with stunted kidneys that predispose them to high blood pressure Australian researchers have shown. The finding adds to growing evidence that early fetal life influences adult health.

Marelyn Wintour of the University of Melbourne subjected 4-week-pregnant ewes to two stressful days by infusing them with the hormone cortisol. Their lambs developed high blood pressure at 5 months o

Rushing fireball developed its own form of sugar digestion

Microbiologists from Wageningen have discovered a strange form of digestion in an exotic microorganism. The `Rushing fireball´, Latin name Pyrococcus furiosus , has reinvented the wheel for several steps of sugar digestion.

Pyrococcus furiosus , which was discovered 15 years ago on an Italian volcanic island, digests sugar somewhat differently from humans, animals, plants and bacteria. All organisms, convert glucose into pyruvate by means of a glycolysis. Pyrococcus furiosus

Stressed intestine can give rise to food allergy

The intestines of mice which have been subjected to stress, overreact to certain nutritional substances. PhD biologist Annette van Kalkeren from the University of Amsterdam has investigated the relationship between stress and the occurrence of food allergies and various intestinal disorders.

The biologist investigated the reaction of pieces of mouse intestine to egg albumin, a substance found in eggs. Just like humans, mice can become allergic to the substance. However, mice only become alle

Cells reprogram in 24 hours

Erasing molecular memory of parents could shed light on clones.

Cells naturally wipe out the mark of their parents in 24 hours, say cloning experts. Exactly how may begin to explain the way that animal clones and stem cells are reprogrammed. Not all genes are born equal. In mammals, some genes are imprinted – cells switch on only the copy inherited from mum or dad, not both. This sex stamp must be erased and rewritten in sperm and egg cells, however, so they are correctly labelled as

Giant vesicles, minibeads, and molecular motors : An original system to emulate intracellular transport

Communication, clearly essential to humans, is also essential to cells, their elemental building blocks. In order to preserve organic cohesion, cells need to communicate with their environment, but they also need to ensure adequate communication between their various compartments.

These forms of intracellular exchange are essential and require the setting up of actual networks. Membrane transport tubes were evidenced some years ago, but their formation has up till now remained a mystery.

New insect order found

Two cricket-like creatures establish new insect group.

The first new order of insects to be discovered for more than 80 years has emerged from the mountains of Namibia. The order’s first official members are two creatures about 2 cm long that look a bit like a cross between a cricket and a stick insect 1 .

The group, called Mantophasmatodea, joins the other 30 or so insect orders such as beetles, flies and termites. “If it was in mammals it’d be like

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