The PAC1 receptor risk genotype does not influence fear acquisition, extinction, or generalization in women with no trauma/low trauma.

Women are known to have twice as much lifetime prevalence of post-traumatic stress disorder (PTSD) as men do. It has been reported that the risk genotype (CC) of a single nucleotide polymorphism (SNP) (rs2267735) in the pituitary adenylate cyclase-activating polypeptide (PACAP-PAC1R) system is associated with PTSD risk and altered fear conditioning and fear extinction in women. Surprisingly, no previous work has studied the effect of this SNP on fear conditioning, extinction, or generalization in non-traumatized/low trauma load women.

Microbiota in the ptarmigan intestine-An Inuit delicacy and its potential in popular cuisine.

The consumption of prey intestines and their content, known as gastrophagy, is well-documented among Arctic Indigenous peoples, particularly Inuit. In Greenland, Inuit consume intestines from various animals, including the ptarmigan, a small herbivorous grouse bird. While gastrophagy provides the potential to transfer a large number of intestinal microorganisms from prey to predator, including to the human gut, its microbial implications remain to be investigated.

Design of allosteric modulators that change GPCR G protein subtype selectivity.

G protein-coupled receptors (GPCRs), the largest family of drug targets, can signal through 16 subtypes of Gα proteins. Biased compounds that selectively activate therapy-relevant pathways promise to be safer, more effective medications. The determinants of bias are poorly understood, however, and rationally-designed, G protein-subtype-selective compounds are lacking.

Cell theories for the chiral crystal phase of hard equilateral triangles.

We derive several versions of the cell theory for a crystal phase of hard equilateral triangles. To that purpose we analytically calculated the free area of a frozen oriented or freely rotating particle inside the cavity formed by its neighbors in a chiral configuration of their orientations. From the most successful versions of the theory we predict an equation of state which, despite being derived from a crystal configuration of particles, describes very reasonably the equation of state of the 6-atic liquid-crystal phase at packing fractions not very close from the isotropic-6-atic bifurcation.

Nitrogen excretion and utilisation of dairy cows grazing temperate semi-natural grasslands.

Diets reliant on grazed, temperate herbage are prone to greater nitrogen (N) losses via urine than balanced stall-fed diets which poses a greater risk for N emissions. Measures for improving the N utilisation in grazing-based dairy cattle systems are predominantly investigated on homogenous clover-ryegrass pastures with high herbage yields and nutritional quality. In contrast, grazing-based systems reliant on less external inputs (e.