Cardiovascular responses to cognitive stress in patients with migraine and tension-type headache

<p>Abstract</p> <p>Background</p> <p>The purpose of this study was to investigate the temporal relationship between autonomic changes and pain activation in migraine and tension-type headache induced by stress in a model relevant for everyday office-work.</p> <p>Methods</p> <p>We measured pain, blood pressure (BP), heart rate (HR) and skin blood flow (BF) during and after controlled low-grade cognitive stress in 22 migraineurs during headache-free periods, 18 patients with tension-type headache (TTH) and 44 healthy controls. The stress lasted for one hour and was followed by 30 minutes of relaxation.</p> <p>Results</p> <p>Cardiovascular responses to cognitive stress in migraine did not differ from those in control subjects. In TTH patients HR was maintained during stress, whereas it decreased for migraineurs and controls. A trend towards a delayed systolic BP response during stress was also observed in TTH. Finger BF recovery was delayed after stress and stress-induced pain was associated with less vasoconstriction in TTH during recovery.</p> <p>Conclusion</p> <p>It is hypothesized that TTH patients have different stress adaptive mechanisms than controls and migraineurs, involving delayed cardiovascular adaptation and reduced pain control system inhibition.</p

Identification of safety effects of infrastructure related measures, Deliverable 5.2 of the H2020 project SafetyCube

Identification of safety effects of infrastructure related measures, Deliverable 5.2 of the H2020 project SafetyCub

Inventory of assessed infrastructure risk factors and measures, Deliverable 5.4 of the H2020 project SafetyCube

Inventory of assessed infrastructure risk factors and measures, Deliverable 5.4 of the H2020 project SafetyCub

Cattle Feeding and Resting Patterns in a Foothills Riparian Zone

Cattle impact on riparian areas is dependent upon both their behavior and utilization of streamside vegetation. Development of grazing strategies for riparian environments would be enhanced by an understanding of cattle behavior in riparian and adjacent uplands. Results of a 2-year behavior study indicate that a seasonal trend in cattle use of riparian and upland areas exists. Unless low precipitation limited upland forage quality/production, cattle spent a significant (P0.50) in the amount of time spent resting in either zone. Significant differences (P<0.05) occurred only when adverse weather conditions caused cattle to seek shelter in the riparian zone. Because cattle spend a disproportionate amount of their feeding time in the riparian zone during late summer and early fall, impacts could be limited by basing stocking rates for this period only on forage available in the riparian zone.This material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries.The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact [email protected] for further information.Migrated from OJS platform August 202

The influence of pasture and feed composition on the mineral content of deciduous teeth in foals

Ten foals, kept on pasture throughout the year, were used in a feeding trial to evaluate the influence of diet on the mineral composition of teeth. The diets of the experimental foals consisted of mountain pasture, hay and a complete pelleted feed. Foals of French Montagnes breed were kept on pasture until weaning on the 149(th) day and subsequently fed for meat and slaughtered at a final weight of 310 kg. Incisor and second premolar teeth were taken after preparation of their skulls for mineral analyses. Feed and teeth samples were analysed by ICP-MS and ICP-AES spectroscopy. The concentrations of calcium and phosphorus were greater in premolar teeth than in incisors. Magnesium and sodium concentrations in deciduous incisors were not significantly different from the concentration in premolar teeth in both groups of male and female foals. A significantly higher concentration of potassium and sulphur (P<0.05) was found in incisor teeth. A significantly higher concentration of selenium, was present in premolar teeth in both sex groups of foals (P<0.05), and a significantly higher concentration of nickel and manganese was found in incisor teeth (P<0.05). The concentrations of iron were greater only in incisor teeth, whereas the concentrations of chromium, copper, strontium, titanium and zinc were lower in incisor teeth. The Sr/Zn ratio was greater in incisor teeth than in premalrs, whereas the Ca/P ratio remained unchanged in incisor and premolar deciduous teeth