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  • 1
    ISSN: 1432-0509
    Keywords: Key words: Intraductal ultrasonography—Bile duct cancer—Papillary adenocarcinoma.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: Patients with papillary adenocarcinoma survive longer than do patients with other histologic types of bile duct tumors. We evaluated the usefulness of intraductal ultrasonography (IDUS) for predicting the histology. Methods: Preoperative tumor assessment was performed by using IDUS through a percutaneous tract or the transpapillary route in 37 patients with extrahepatic bile duct cancer. In 30 of 37 patients, imaging results were compared prospectively with histologic findings in resected specimens. Probes 2.0 mm in diameter and 20 MHz in frequency were mainly used. When IDUS showed a “narrow-based polypoid pattern” or a “papillary surface pattern,” the patients were judged as having papillary adenocarcinoma. Results: The accuracy, sensitivity, and specificity of IDUS in predicting papillary adenocarcinoma were 90%, 89%, and 90%, respectively. When intraductal ultrasonography showed a papillary surface pattern or a narrow-based polypoid pattern, lymph node metastases and perineural invasion were rarely seen when compared with other patients with bile duct cancer (p 〈 0.05). Conclusion: IDUS is useful for assessing the histologic type of bile duct cancer.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0509
    Keywords: Key words: Percutaneous transhepatic biliary drainage—Catheter—Dislodgement—Complication.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: To identify the appropriate puncture points in the bile duct to avoid catheter dislodgement. Methods: Percutaneous transhepatic biliary drainage catheters (n = 300) were placed in 242 patients. The frequency of dislodgement (complete dislodgement or bending of the catheter) was prospectively investigated. The puncture site of the bile duct was classified on the ultrasonographic findings as follows: Main-B3, main branch of the lateral inferior segment; peripheral-B3, peripheral branch of the lateral inferior segment; B2, lateral superior segment; left hepatic duct, proximal portion of the left hepatic duct; B8, anterior superior segment; B5, anterior inferior segment; B5 + 8, main bile duct of the anterior segment; B6, bile duct of posterior inferior segment; and right hepatic duct, proximal portion of the right hepatic duct. Results: When a catheter without an outer sheath was used, catheter dislodgement in peripheral-B3 (2/11, 18%) was more common than in main-B3 (0/32, 0%; p 〈 0.05). In B5, catheter dislodgement (6/12, 50%) was more frequent than in B8 (3/20, 15%; p 〈 0.05) and in B6 (0/14, 0%; p 〈 0.005). When a catheter with an outer sheath was used, catheter dislodgement (2/207, 1%) was rare. Conclusion: Drainage from B5 and peripheral-B3 is associated with a high risk of dislodgement of the catheter. A catheter with an outer sheath was useful to prevent catheter dislodgement. RID="" ID="" 〈E5〉Correspondence to:〈/E5〉 K. Tamada
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Marine biology 12 (1972), S. 295-299 
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A study of the direct uptake by Artemia salina of phosphate ion from the medium and its incorporation into acid-soluble organic phosphorous compounds over a range of exposure time from 2 to 30 min, using 32PO4 ion, indicated that the phosphate ion was directly taken up and was rapidly incorporated into the energy-rich compounds, such as adenosine triphosphate (ATP), guanosine triphosphate (GTP), and adenosine diphosphate (ADP), which were separated by ion-exchange chromatography using Dowex-1, X2. Even after an exposure of 2 min, the sum of the radioactivity of nucleotide-fractions was 37.4% of that of the whole acid-soluble extract. The most rapid incorporation of 32P occurred into ATP, followed by GTP and ADP. The amount of 32P incorporated into each fraction increased with increased exposure, giving straight lines when the radioactivity of each fraction was plotted against the exposure time on a logarithmic scale. Almost no difference, however, was observed in the distribution rate of 32P into each fraction at 2, 5, 10 and 30 min. These results show that inorganic phosphate absorbed by A. salina is rapidly incorporated into the energy-rich nucleotides, and that a dynamic equilibrium is established among various acid-soluble phosphorous compounds even after very short periods of time.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 38 (1990), S. 305-307 
    ISSN: 1432-1041
    Keywords: dilevalol ; carteolol ; hypertension ; vasodilator properties ; β-blocker ; renal function
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The effects of 6 weeks of treatment with dilevalol 100 mg once daily, or carteolol 10 mg once daily, on renal blood flow (RBF), glomerular filtration rate (GFR) and total renal vascular resistance (TRR) were studied in 10 patients with mild-to-moderate essential hypertension in a randomised cross-over experiment. Both drugs lowered the systolic and diastolic blood pressures to a similar extent without altering the heart rate. Carteolol non-significantly decreased RBF by 9.2% and GFR by 12.3% without altering. TRR, whereas dilevalol produced a significant reduction in TRR by 13.2% (p〈0.05), a non-significant decrease in RBF by 4.6% and no change in GFR. Neither drug changed plasma osmotic pressure, serum total protein concentration, electrolytes or plasma aldosterone concentration. Plasma renin activity tended to be lower in the dilevalol phase as compared to the carteolol phase. The results suggest that dilevalol may cause a greater decrease in TRR and less reduction in GFR when compared to carteolol in patients with mild-to-moderate essential hypertension. The difference in the renal effects might be due to the difference in the potency of vasodilatory properties of both drugs at the doses applied.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1041
    Keywords: Alpha1-adrenoceptor antagonist ; Bunazosin ; Sodium retention ; atria ; natriuretic peptide ; arginine vasopressin ; renin-aldosterone system ; enalapril ; blood pressure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary To elucidate the mechanism underlying the sodium retention caused byα 1-adrenoceptor blockade in man, a placebo-controlled, randomised, double-blind study has been made of the acute effects of bunazosin anα 1-antagonist, on urinary sodium excretion, atrial natriuretic peptide (ANP), arginine vasopressin (AVP), and the renin-aldosterone system in 7 healthy men. A single oral dose of bunazosin 2.0 mg caused a significant reduction (P 〈 0.05) in urinary sodium excretion after 0–2 h, 2–4 h, and 4–6 h. The mean values for plasma ANP, AVP, aldosterone, and cortisol concentrations at those times were similar after placebo and bunazosin, and plasma renin activity was significantly increased 2 and 4 h after bunazosin. Pretreatment with oral enalapril 10 mg, an angiotensin converting enzyme inhibitor, did not prevent the bunazosin-induced reduction in urinary sodium excretion. There was a significant positive correlation between the drug-induced changes in blood pressure and urinary sodium excretion. The results suggest that ANP, AVP, and renin-aldosterone may play little role in the sodium retention caused by acuteα 1-adrenoceptor blockade in man.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-1041
    Keywords: nicardipine ; diabetic nephropathy ; calcium antagonist ; hypertension ; renal function ; albuminuria
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The renal effects of oral maintenance doses of nicardipine 60–120 mg/day have been studied in 18 hypertensive patients with Type 2 (non-insulin-dependent) diabetes mellitus: 6 with normoalbuminuria (urinary albumin excretion rate, AER 〈20 μg · min−1, Group A); 6 with incipient nephropathy, (AER 20–200 μg · min−1, Group B); and 6 with overt nephropathy (AER 〉200 μg · min−1, Group C). Treatment for 4 weeks significantly lowered the systolic and diastolic blood pressures and reduced total renal vascular resistance in all three groups. Nicardipine increased renal blood flow significantly in Group C and slightly in Group B, and had no effect in Group A. Glomerular filtration rate remained unchanged in all three groups. It significantly reduced AER and the fractional clearance of albumin in Group B, whereas AER in Groups A and C was not altered. Plasma renin activity, aldosterone concentration, osmotic pressure, serum total protein and albumin concentrations and haemoglobin A1c level were similar in the control and nicardipine phases in all three groups. The results suggest that nicardipine may preserve renal function whilst having a concomitant hypotensive action in hypertensive Type 2 diabetic patients with normoalbuminuria and incipient nephropathy, and that the drug may improve renal blood flow in patients with overt nephropathy. The effect of the drug on urinary albumin excretion may deserve further investigation.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 42 (1992), S. 117-118 
    ISSN: 1432-1041
    Keywords: Carteolol ; Dilevalol ; Hypertension ; β-adrenoceptor blocker ; intrinsic sympathomimetic activity ; lipids ; creatine phosphokinase ; glycosylated haemoglobin A1c ; uric acid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 204 (1994), S. 76-83 
    ISSN: 0006-291X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 177 (1991), S. 279-285 
    ISSN: 0006-291X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 0925-4005
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Type of Medium: Electronic Resource
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