Different stresses, similar morphogenic responses: integrating a plethora of pathways

Physiological Responses to Different Mental Stresses

The purpose of the present study was to compare the physiological responses to different types of mental stress encountered in the workplace. Circulatory and central nervous system responses were examined in 8 healthy males by exposing them to 20-min of white noise (80 dB(A)) and 20-min of computer-based mental arithmetic tasks as models of vascular and cardiac stress, respectively. The results...

EDHF and NO: different pathways for production--similar actions.

In this issue of Circulation Research, Véquaud and Thorin1 present observations that attest to differential G protein signaling in dilation to nitric oxide (NO) and endothelium-derived hyperpolarization factor (EDHF). The investigators also report that EDHF of the mesenteric artery is not a metabolite of phospholipase C, which strongly suggests that this vasodilator is not a lipid metabolite of...

DIFFERENT GROWTH RESPONSES OF THE AXIAL AND COTYLEDONARY TISSUES OF SUNFLOWER SEEDS TO C H UNDER WATER AND SALT STRESSES

Integrating Similar Software Systems

MARCH/APRIL 2011 | IEEE SOFTWARE 75 WHAT WOULD YOU do if you realized your company owns two similar software systems—that is, it holds complete rights and control of two systems intended to fi ll the same user needs? You might fi rst ask how the company came to be in such an awkward position.1 But actually, this situation is typical after a company merger or acquisition or when a large organiza...

Similar odorants elicit different behavioral and physiological responses, some supersustained.

An intriguing question in the field of olfaction is how animals distinguish among structurally similar odorants. We systematically analyzed olfactory responses elicited by a panel of 25 pyrazines. We found that structurally similar pyrazines elicit a wide range of behavioral responses from Drosophila larvae. Each pyrazine was tested against all functional receptors of the larval Odor receptor (...