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  • 2000-2004  (44)
  • 1985-1989  (71)
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  • 11
    Online Resource
    Online Resource
    Sc, y, la-Lu. Rare Earth Elements : Compounds with Boron. (1989)
    Berlin, Heidelberg :Springer Berlin / Heidelberg,
    Details
    Keywords: Chemical elements. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (289 pages)
    Edition: 8th ed.
    ISBN: 9783662075036
    Series Statement: Gmelin Handbook of Inorganic and Organometallic Chemistry - 8th Edition Series ; v.S-c... / C / 11 / a
    URL: https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=6556341
    DDC: 540
    Language: English
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    GEOMAR EBL
  • 12
    Electronic Resource
    Electronic Resource
    Primary aldosteronism by carcinoma of the adrenal cortex (1987)
    Springer
    Journal of molecular medicine 65 (1987), S. 428-432 
    Details
    ISSN: 1432-1440
    Keywords: Rare cause of primary aldosteronism ; Hypokalemic hypertension ; Diagnostic procedure ; Treatment of malignant adrenal disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A 58-year-old white woman with hypertension and severe hypokalemia was found to have a carcinoma of the left adrenal gland. Plasma renin activity was constantly under the normal limit, while plasma aldosterone levels were pathologically elevated. Plasma cortisol (8:00 a.m.) and excretion rates of urinary free cortisol were within the normal range. After an adrenalectomy, relapsing excessive aldosterone secretion was successfully treated with opDDD (Lysodrene). Ten months after the diagnosis was established, the patient died from a bleeding liver metastasis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01715766
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  • 13
    Electronic Resource
    Electronic Resource
    Minoxidil and captopril in severe hypertension (1986)
    Springer
    Journal of molecular medicine 64 (1986), S. 327-332 
    Details
    ISSN: 1432-1440
    Keywords: Severe hypertension ; Minoxidil ; Captopril
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The antihypertensive efficacy of minoxidil and captopril was compared in 23 males with essential or renal parenchymatous hypertension refractory to conventional antihypertensive drug therapy. Following a pretreatment period the patients were randomly assigned to receive either minoxidil, 2.5 mg twice daily (n=12), or captopril, 25 mg twice daily (n=11). In patients with diastolic blood pressure 〉95 mmHg, doses of minoxidil and captopril were increased in 2-week intervals. Patients who maintained diastolic pressure 〉95 mmHg and/or those with intolerable side effects were switched over to the alternative substance. After a mean observation period of 12 weeks a significant decrease in systolic and diastolic blood pressure was observed (179/114 vs 148/92 mmHg in the minoxidil group; 176/111 vs 158/97 mmHg in the captopril group). The primary response rate was 75% in patients treated with minoxidil and 55% in those with captopril (not significant). After the change to the alternative substance two of the four non-responders on captopril and one of the two non-responders on minoxidil became responders. Side effects occurred significantly more often during minoxidil than captopril (p〈0.05). The high efficacy of minoxidil and captopril in the treatment of severe hypertension refractory to conventional drugs was confirmed. Minoxidil lowered blood pressure slightly more than captopril, but it had a higher incidence of side effects than captopril.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01711952
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  • 14
    Electronic Resource
    Electronic Resource
    Captopril before and after spironolactone therapy in primary aldosteronism (1985)
    Springer
    Journal of molecular medicine 63 (1985), S. 361-363 
    Details
    ISSN: 1432-1440
    Keywords: Primary aldosteronism ; Captopril ; Spironolactone ; Renin-angiotensin ; Converting-enzyme ; Secondary hypertension
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In three patients with primary aldosteronism, the acute effect of a single dose of captopril on the elevated mean arterial blood pressure (MAP) was studied before and after 4 weeks of treatment with spironolactone. Before spironolactone therapy, captopril did not cause any drop in MAP. Four weeks later, after an oral daily dose of 400 mg spironolactone, MAP was still elevated in all three patients, though electrolyte abnormalities were fully corrected. Since plasma renin activity (PRA) was increased to values above the normal range, the acute effect of captopril on MAP was tested again. A single dose of 25 mg captopril then caused a fall in MAP to normal. These data reveal the conversion from a renin-independent to a renindependent kind of hypertension after spironolactone therapy in three patients with primary aldosteronism syndrome. This might be of pathogenetic and therapeutic interest.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01731655
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  • 15
    Electronic Resource
    Electronic Resource
    Atenolol versus pindolol: Side-effects in hypertension (1985)
    Springer
    European journal of clinical pharmacology 28 (1985), S. 89-91 
    Details
    ISSN: 1432-1041
    Keywords: atenolol ; pindolol ; sleep disturbance ; β-blockers ; dreaming ; fatigue ; hypertension ; lipophilicity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary This randomized crossover out-patient study was designed to compare the antihypertensive effects of atenolol and pindolol. After a wash-out period of two weeks in pretreated cases, 107 patients with essential hypertension were given either atenolol 100 mg once-daily or pindolol 20 mg slow release (SR) once-daily. Both atenolol and pindolol lowered blood pressure over the 24 week period. The diastolic blood pressure reduction was significantly greater (p〈0.01) with atenolol than with pindolol. Before β-blocker therapy, many patients had already experienced side-effects such as fatigue, sleep disturbances and dreams. This probably relates to the high sensitivity of the analogue scale used to assess side-effects, and to the high incidence of such symptoms in untreated patients. As the study progressed there was a reduction in the frequency of fatigue (p〈0.03) and dreams (p〈0.05) in both groups, whereas sleep disturbances significantly increased under pindolol (p〈0.05) but decreased under atenolol (p〈0.05). The only important side-effect difference between the two β-blockers was the higher incidence of sleep disturbances with pindolol which may be due to the higher lipophilicity of this β-blocker.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00543717
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  • 16
    Electronic Resource
    Electronic Resource
    Lattice site location of ion-implanted 8Li in Silicon Carbide (2002)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 91 (2002), S. 1046-1052 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The lattice sites of ion-implanted Li atoms in 6H-, 4H-, and 3C-SiC were studied. Radioactive 8Li ions (t1/2=0.84 s) were implanted with 60 keV into the crystalline SiC samples, and the channeling and blocking effects of 1.6 MeV alpha particles emitted in the decay were measured to determine the Li lattice sites. The alpha emission channeling spectra measured along different crystallographic directions reveal that Li occupies mainly interstitial sites with tetrahedral symmetry, centered along the c-axis atom rows in the hexagonal lattices. In the cubic 3C-SiC structure, Li is located on tetrahedral interstitial sites as well. For 6H-SiC, the implantation temperature was varied between 200 and 823 K without observing significant changes in the emission channeling spectra. Thus, Li diffusion or Li defect interaction resulting in a lattice site change does not occur in this temperature regime. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1425442
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  • 17
    Electronic Resource
    Electronic Resource
    Ion beam deposition of fluorinated amorphous carbon (2001)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 90 (2001), S. 4237-4245 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have studied the growth and the properties of (t)a-C:F films prepared by the deposition of mass separated 12C+ and 19F+ ions as a function of the F concentration. The films are always strongly F deficient due to the formation of volatile F2 and CFx molecules during the deposition process. A maximum F content of about 25 at. % is obtained for an ion charge ratio of C+:F+=1:1. The observed mechanical, optical, electrical, and structural properties as well as the thermal stability of the films are strongly influenced by the F content. A three step progression of the film structure is evident for increasing F concentration: the amorphous three-dimensional network of tetrahedrally bonded carbon atoms of pure carbon films (ta-C) with diamondlike properties is doped for very low F concentrations (ta-C:F). A further increase of the F content results first in transformation to a graphitelike amorphous structure (a-C:F) before the deposited films become porous and to a polymerlike one for the highest F content. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1404419
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  • 18
    Electronic Resource
    Electronic Resource
    Long-Term Effectiveness of Operative Procedures for Stanford Type A Aortic Dissections (2004)
    350 Main Street , Malden , MA 02148-5020 , USA and 9600 Garsington Road , Oxford OX4 2XG , England . : Blackwell Science Inc
    Journal of cardiac surgery 19 (2004), S. 0 
    Details
    ISSN: 1540-8191
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract  Background: The object was to evaluate the long-term effectiveness of strategies for managing the aortic root and distal aorta in type A dissections. Methods: From 1990 to 1999, 50 patients (32 men (64.07%); 18 women, (36.0%); mean age 57.4 ± 11.1 years) underwent operation for ascending aortic dissection. Surgical strategies included aortic root replacement with a composite graft (21/50; 42.0%), valve replacement with supracoronary ascending aortic graft (3/50, 6%), and valve preservation or repair (26/50; 52.0%). Results: Overall hospital mortality rate was 18.0%. Follow-up was completed for 47 patients (94.0%) and ranged from 1 month to 10.5 years (mean 28.8 months). Actuarial survival for patients discharged from the hospital was 84% at 1 year, 75% at 5 years, and 66% at 10 years. There was no significant difference between the various procedures regarding mortality, neurological complications, long-term survival, and proximal reoperations. The ascending aorta alone was replaced in 8 of 50 patients (16%), ascending and hemiarch in 30 of 50 patients (60%), and arch and proximal descending aorta in 12 of 50 patients (24%). Hospital mortality (11.5%, 20.0%, and 16.7%, respectively; p 〉 0.05) and 5- and 10-year survival (p 〉 0.05) were not statistically dependent on the extension of the resection distally. Residual distal dissection was not associated with a decrease in late survival. With regard to emergency surgery (36/50) there was no significant difference in hospital mortality (p 〉 0.05) and 5-year survival (p 〉 0.05) between those who had undergone coronary angiography (19/36; 52.8%) on the day of surgery with those who had not (17/36; 47.2%). Conclusions: Preservation or repair of the aortic valve can be recommended in the majority of patients with type A dissection. Distal extension of the resection does not increase surgical risk. Residual distal dissection does not decrease late survival. Preoperative coronary angiography may not affect survival in patients undergoing emergency surgery. (J Card Surg 2004;19:240-245)
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.0886-0440.2004.04062.x
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  • 19
    Electronic Resource
    Electronic Resource
    The Edwards MIRA™ Heart Valve Prosthesis: (2004)
    350 Main Street , Malden , MA 02148-5020 , USA and 9600 Garsington Road , Oxford OX4 2XG , England . : Blackwell Science Inc
    Journal of cardiac surgery 19 (2004), S. 0 
    Details
    ISSN: 1540-8191
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract  Background: The Edwards MIRA™ mechanical heart valve is designed to optimize hemodynamics, reduce thrombogenicity, and avoid mechanical failure with a special hinge mechanism. The purpose of the study was to investigate the clinical performance and postoperative hemodynamic results of the first European patients receiving Edwards MIRA™ mechanical heart valves. Methods: From March 1998 to March 1999 a total of 54 Edwards MIRA™ valves model numbers 3600 (aortic, n = 44) and 9600 (mitral, n = 10) were implanted in 52 (36 male, 16 female; mean age 61 ± 10.1 years) consecutive patients undergoing mechanical valve replacement in a prospective study. Follow-up of the patients including physical examination, ECG, blood tests, and Doppler were performed prior to discharge, at 6 months, at 1 year, and at least 2 years postoperatively. Results: Through October 2001 a total of 172 follow-up examinations were completed (51 patients at discharge, 46 patients at 6 months, 43 patients at 12 months, 32 patients at 2 years or beyond). All patients were in NYHA class I and II at the 6-month and 2+-year follow-up. All the patients stated an improved quality of life. Hospital mortality was 1.9%. There were no complications related to anticoagulation. Mean international normalized ratio at 6 months was 3.2 (range 1.9 to 4.3); lactate dehydrogenase was slightly increased with 264 ± 103 U/L on average (normal value 80 to 240 U/L). No signs of valvular dysfunction or paravalvular leakage were observed. Mean pressure gradients were related to valve diameter: after mitral valve replacement (size 27, 29, 31 mm: 4.8, 3.2, 2.1 mmHg); after aortic valve replacement (size 19, 21, 23, 25 mm: 12.1, 13.1, 9.3, 8.2 mmHg). Conclusions: These preliminary data suggest good hemodynamic function and a low rate of valve-related complications of the Edwards-MIRA™ mechanical prosthesis. (J Card Surg 2004;19:226-231)
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.0886-0440.2004.04060.x
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  • 20
    Electronic Resource
    Electronic Resource
    Increased CNS uptake and enhanced antinociception of morphine-6-glucuronide in rats after inhibition of P-glycoprotein (2002)
    Oxford, UK : Blackwell Science Ltd
    Journal of neurochemistry 83 (2002), S. 0 
    Details
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Morphine-6-glucuronide (M6G) is a substrate of P-glycoprotein (P-gp), which forms an outward transporter at the blood–brain barrier. Inhibition of P-gp may therefore be expected to cause increased CNS uptake of M6G. We directly assessed the spinal concentrations of M6G and its antinociceptive effects in rats following pharmacological inhibition of P-gp. Spinal cord tissue concentrations of M6G were assessed by microdialysis with probes transversally implanted through the dorsal horns of the spinal cord at level L4. Ten rats received M6G intravenously (0.018 mg/kg loading dose plus 0.00115 mg/kg/min for an 8-h infusion), five of them together with PSC833 to inhibit P-gp (32-h infusion, starting 24 h before the addition of M6G). Antinociceptive effects were explored by means of formalin tests. After having obtained evidence for enhanced CNS uptake and antinociception of M6G in the presence of PSC833, additional behavioural experiments were performed in another 32 rats to assess the dose dependency of the antinociceptive effects of M6G either with or without PSC833 in comparison with both PSC833 alone and placebo. Inhibition of P-gp increased the M6G concentrations in the spinal cord approximately three-fold whereas the plasma concentrations were increased only by a factor of 1.4, which resulted in a more than doubled spinal cord/plasma concentration ratio (from 0.08 ± 0.03 for M6G alone to 0.17 ± 0.08 for M6G plus PSC833). Antinociceptive effects of M6G were significantly enhanced by inhibition of P-gp. Inhibition of P-gp alters the transport of M6G across the blood–brain barrier, resulting in enhanced spinal cord uptake and enhanced antinociception.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1471-4159.2002.01177.x
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