Giving birth is clearly a high-stress experience. But usually it involves positive stress, which helps the woman cope with the exigencies of delivery and prepares the baby for a life outside the mother’s womb.” These are the words of Siw Alehagen from Linköping University, Sweden, who has written a dissertation about fear, pain, and stress hormones in women giving birth. Among other things, she has performed studies during actual delivery, a method that few researchers have dared to attempt anywhere in the world.
Siw Alehagen’s dissertation work started with the construction of an instrument of measurement--a series of questions--to measure the degree of fear women experience in giving birth. She then used this instrument and combined it with urine and saliva samples at the end of pregnancy, each hour during delivery, and on three occasions after delivery.
The stress hormones metered in the samples were adrenalin, noradrenalin, and cortisol. Adrenalin and cortisol, which mark mental stress, increased by up to 1,000 percent in some women during phases of delivery. Noradrenalin content, which above all marks physical stress, did not increase nearly as much. According to Siw Alehagen, this indicates that birthing stress is not primarily physical but mental.
Ingela Björck | alphagalileo
Biofilm discovery suggests new way to prevent dangerous infections
23.05.2017 | University of Texas at Austin
Another reason to exercise: Burning bone fat -- a key to better bone health
19.05.2017 | University of North Carolina Health Care
Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.
Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....
Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.
The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....
An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.
We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...
Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.
Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...
An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...
24.05.2017 | Event News
23.05.2017 | Event News
22.05.2017 | Event News
26.05.2017 | Life Sciences
26.05.2017 | Life Sciences
26.05.2017 | Physics and Astronomy