Stress selectively influences center region activity of mice in an open field

Effects of immobilization and footshock stress on locomotor activity in different areas of an open field were examined in mice. Center region activity, peripheral region activity and total activity were used as measurement indices. These results indicate that both immobilization and footshock stress significantly increased total activity across 24 min of behavioral testing. Further analyses revealed that the difference in total activity between the experimental and control groups were mainly attributal to an increase in center region activity. Both stress manipulations markedly augmented peripheral region activity for only the first 6 min. More important, when the proportion of center to peripheral activity was used as an index, both experimental groups manifested an inverted U shape relationship with the maximum effect occurring between 13-18 min of behavioral testing. Similarities of these activity measures in response to different stressors suggests that common neurochemical and/or neurohormonal mechanisms may mediate these behavioral changes.     

Orthopedic disorders, morbidity, and sick absenteeism in men with different levels of serum gamma-glutamyltransferase

All orthopedic treatment administered between 1970 and 1982 was analyzed in random subsamples of men 28, 38, and 48 years old being screened for serum gamma-glutamyltransferase (GGT) levels. Of 1,151 screened participants, 631 men had been treated for fracture, distortion, contusion, low-back pain with or without sciatica, or radial epicondylitis. The extent of care and incidence of the different diagnoses over the 13 years, as well as the number of sick days incurred by these men during 1981, were investigated for different GGT brackets. Those men with the highest GGT values (greater than or equal to 1.34 mu kat/liter approximately 80 IU) had 4-6 times more fractures and consulted surgeons 6-13 times more often than those men with the lowest GGT values (less than 0.35 mu kat/liter approximately 20 IU). Epicondylitis and distortion showed the opposite frequency distribution, with the highest incidence occurring in the lowest GGT brackets. Increasing GGT values were also correlated with sick leave days. Men in the highest decile for sick leave had 25 times more fractures than those men with no sick absenteeism. We conclude that an accumulation of alcohol-related orthopedic disorders occurs among men with high GGT values.     

Detection of urinary polyamine by a new enzymatic differential assay. (II). Comparison with conventional method

A new method of determining urinary polyamine concentration was compared with other techniques, namely, high pressure liquid chromatography (HPLC) and a polyamine test-enzyme kit. The values obtained by the new method, HPLC, and polyamine test-enzyme kit correlated well for all the fractions: diamine, spermidine and spermine. The correlation between the new method and the polyamine test-enzyme kit gave r = 0.9702, y = 1.1359x + 5.1266 (n = 48).     

MR imaging of cavernous hemangioma of the face and neck

Four patients with cavernous hemangioma of face and neck were evaluated with magnetic resonance imaging. Pathologically, soft tissue cavernous hemangiomas are characterized by small feeding arteries and large blood poolings. Arteriography usually fails to demonstrate the extent of the lesion. Computed tomography does not allow differentiation between these lesions and surrounding normal tissues. Magnetic resonance clearly demonstrates hemangiomas with good contrast between lesion and normal tissues. Spin-echo technique with long echo time appears to be particularly useful to delineate these lesions.     

Congenitally corrected transposition of the great arteries associated with the pre-excitation syndrome

A case with congenitally corrected transposition of the great arteries associated with the pre-excitation syndrome is presented. A gated-blood-pool study and Tl-201 myocardial imaging were performed using SPECT. The tomographic gated-blood-pool images showed the shapes of the right ventricle (RV) and left ventricle (LV), i.e., anatomically LV and RV respectively, to be reversed from that of normal patients. The relationships of the great vessels and ventricles also were easily visualized. RV hypertrophy (anatomical LV) was visualized on the Tl-201 images. Phase analysis showed the earliest excitation was in the anteroseptal region near the base of the LV, which was consistent with the site of the accessory conduction pathway. The gated-blood-pool and Tl-201 tomographic studies were helpful for demonstrating the corrected transposition of the great arteries and the pre-excitation syndrome.     

New Types of Germacranolides from Austroliabum candidum1.

The investigation of AUSTROLIABUM CANDIDUM afforded, in addition to several known sesquiterpene lactones, four new ones, including three germacranolides with an ether bridge, as well as an unusual glucoside. The structures were elucidated by spectroscopic methods.