[Further comments on the so-called migraine personality].

In order to replicate previous findings, two studies were carried out comparing migraine patients and headache free controls in terms of degree of ambition, idea of tidiness, and rigidity. Migraineurs (75 Ss in study I, 82 in study II) were recruited in the frame of two large inquiries on headache frequency; control groups were made up of persons out of the same samples and matched for age, sex, educational level and professional status. Personality variables were assessed by means of a standardized questionnaire.

Ruptured abdominal aortic aneurysm: the Harborview experience.

During the last decade (1980 to 1989) 186 patients with ruptured abdominal aortic aneurysm were admitted to a single urban hospital. Ninety-six percent of these patients had a prehospital systolic blood pressure less than 90 mm Hg. Management included paramedic field resuscitation and transport, an emergency department diagnostic protocol completed in an average of 12 minutes, rapid transport to a dedicated emergency operating room, aneurysmorrhaphy by general surgery chief residents under the supervision of specialist vascular surgeons, and skilled postoperative intensive care unit care.

[Freiburg Personality Inventory scores of patients with chronic polyarthritis in comparison with persons with arthrotic manifestations--no indication of a typical polyarthritis personality].

Patients with rheumatoid arthritis and arthrosis (33 females and 11 males in each group) were compared in terms of scores in the Freiburger Personality Inventory. After matching subjects of both groups for sex and age, t-tests for correlating samples were applied. No significant differences were found in any scale; in three of them significance was just missed (5% less than p less than 10%).

Efferent ductules of the boar--a morphological study.

The efferent ductules of the boar were investigated by means of corrosion casts, light microscopy, scanning and transmission electron microscopy. They arise from an extratesticular rete and constitute the major, caudolateral part of the ascending limb of the caput epididymidis. Ductules may be subdivided into three segments: a slightly undulating testicular segment, a highly coiled intermediate segment and a moderately coiled epididymal segment.

Biochemical and morphological studies on perivenous and periportal liver parenchymal cells from female rats isolated by digitonin-collagenase method.

Periportal (pp) or perivenous (pv) liver parenchymal cells from female adult Uje: WIST rats were isolated after retro- or antegrade digitonin infusion followed by collagenase perfusion in the opposite direction. The morphological results revealed a distinct acinar-related destruction of the pv- or pp-zone by digitonin. The remaining cells of the respective other zone showed a good structural maintenance.

Daily stress as a trigger of migraine attacks: results of thirteen single-subject studies.

A 6-month longitudinal study examined whether migraine attacks were preceded by or occurred on stressful days. Every evening 13 patients filled out a questionnaire assessing daily stress. Analyses on single-subject level tested whether attacks occurred more often than expected by chance 3, 2, or 1 day after or on day when stress scores were in the upper third of the subject's distribution.

Growth-phase-dependent expression of the Pseudomonas putida TOL plasmid pWW0 catabolic genes.

Pseudomonas putida TOL plasmid pWW0 catabolic genes are clustered into two operons. The first, the upper operon, is controlled by the xylR regulatory gene, whereas the second, the meta operon, is controlled by the xylS regulatory gene. The xylS gene itself is subjected to control by xylR.

Duplex scanning of normal or minimally diseased carotid arteries: correlation with arteriography and clinical outcome.

This study evaluated the role of duplex scanning in the management of patients with normal or minimally diseases carotid arteries. Carotid duplex scans were interpreted according to previously established criteria and considered normal when pulsed Doppler spectral waveforms showed laminar flow or only minor flow disturbances. Normal flow patterns were noted by duplex scanning in 100 carotid bifurcations of 72 patients who also underwent carotid arteriography.

Mechanism of long-term degeneration of arterialized vein grafts.

This study examined long-term changes in the morphology and cellular kinetics of rabbit vein grafts transplanted into the carotid artery. Six grafts were studied 1 year after implantation. Although the circumference and thickness of the wall were not different than at 12 weeks, degenerative changes occurred.

[Histological findings of the small intestinal mucosa in rotavirus infections in infants and young children].

In a prospective study we performed small intestinal mucosal biopsies in 40 children with acute rotavirus diarrhoea. Biopsies were taken from these children between the 2nd to 10th day of acute phase. The children were at an age of less than 18 month.

Can duplex scanning replace arteriography for lower extremity arterial disease?

This preliminary study was undertaken to determine if surgeons would choose different intervention for lower extremity occlusive disease when given basic clinical information and data from either a duplex scan or arteriogram. Information on degree of stenosis from duplex scans and arteriograms of 29 patients was indicated on an anatomical line drawing along with the ankle blood pressures and a brief clinical description. Based on these data sheets, six vascular surgeons chose a clinical plan in a blinded fashion for each patient.

Microvasculature of the epididymis in the boar.

Microvasculature of the epididymis was investigated by scanning electron microscopy of vascular corrosion casts. The basic structure of blood supply to the boar epididymis consists of two superimposed vascular networks. Capillaries surrounding the epididymal duct constitute the inner level.

[Vascular morphology of the bovine testis. Light and scanning electron microscopic studies].

The testicular artery of the bull-testis shows a straight course from the end of the pampiniform plexus to the caudal extremity of testis. There it branches off in Rami tunicales, which lie as stratum arteriosum superficially to the albugineal veins of testis: a multi-layered stratum venosum. Arterial Rami parenchymales centripetales run directly to the mediastinum testis, form coils and then divide in approximately 10 or more thinner Rami parenchymales centrifugales, which extend from the coils into the parenchyma of the gonad.

[The vascularization of the epididymis of the boar with special reference to perfusion fixation].

Vasculature of the epididymis was investigated by means of corrosion casts. In the boar, epididymal arteries form a complex network around their stem vessel, the testicular artery. Proper perfusion fixation or complete casting therefore require direct injection into one of these branches.

[The number of active sweat glands (PSI, palmar sweat index) in stress caused by blood donation].

The number of active sweat glands (PSI), heart rate, systolic (SBP) and diastolic blood pressure (DBP) were assessed every 2 minutes in 109 male blood donors. Three measurements were taken at the beginning (adaptation phase), three later but before blood donation (baseline), one during the venous puncture (phase 3), three thereafter but still during donation (phase 4), and four after removal of the cannula (phase 5). Analysis of variance yielded significant differences between phases; PSI and SBP behaved similarly, decreasing from adaptation to baseline, rising during puncture, and decreasing again thereafter.

Pancreaticoduodenectomy and the celiac artery compression syndrome.

Celiac compression is usually a benign condition, but when surgery necessitates division of collaterals from the superior mesenteric artery, it may cause life-threatening gut ischemia. We report a case of cholangiocarcinoma necessitating pancreaticoduodenectomy in a patient with celiac artery compression by the median arcuate ligament. Preoperative duplex scanning confirmed the celiac stenosis and revealed retrograde flow through collaterals from the superior mesenteric artery.

Involvement of Pseudomonas putida RpoN sigma factor in regulation of various metabolic functions.

The RpoN protein was originally identified in Escherichia coli as a sigma (sigma) factor essential for the expression of nitrogen regulons. In the present study we cloned the Pseudomonas putida rpoN gene and identified its gene product as a protein with an apparent molecular weight of 78,000. A mutant rpoN gene was constructed by in vitro insertion mutagenesis with a kanamycin cassette.

Management of internal carotid artery occlusion.

Although attempts to restore patency of occluded internal carotid arteries are now rarely made, endarterectomy in the contralateral artery, external carotid endarterectomy and until recently EC/IC bypass have remained surgical options in the management of such patients. Over a four-year period at this institution 104 patients underwent carotid endarterectomy for stenosis. In this group the contralateral carotid was patent (Group A).

Effect of heparin on adaptation of vein grafts to arterial circulation.

We studied the effect of heparin on wall thickening in balloon-injured carotid arteries and vein grafts in rabbits. Heparin (0.3 mg/kg of body weight/hour) reduced intimal cross-sectional area in balloon-injured carotid arteries at 2 weeks (0.

A twelve-year survey of cervicothoracic vascular injuries.

This study of a large series of victims of trauma to the cervicothoracic great vessels confirms the lethal potential of these injuries: more than half of victims of such injuries died. The optimal management of patients potentially harboring such vascular damage appears to include skilled prehospital resuscitation and rapid transport to a trauma center, a high index of diagnostic suspicion, a low threshold for the performance of contrast arteriography, aggressive surveillance for associated neurologic and aerodigestive tract injuries, and timely technical repair, including liberal indications for sternotomy or thoracotomy to assure vascular control.

Cerebrovascular accident after Greenfield filter placement for paradoxical embolism.

A 69-year-old man with paradoxical embolism suffered a cerebral embolism despite treatment with anticoagulants and placement of a Greenfield filter. The open architecture of the filter allows it to maintain caval patency better than other mechanical devices, but this design also permits passage of emboli up to 3 mm in diameter. Although such small emboli do not produce symptoms in the pulmonary circuit, they can be devastating in the cerebral circulation.