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  • 11
    Electronic Resource
    Electronic Resource
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 351 (1995), S. 229-236 
    ISSN: 1432-1912
    Keywords: BIMU 8 ; BIMU 1 ; Renzapride ; 5-HT4 receptors ; Acetylcholine release ; Myenteric plexus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The effects of the 5-HT4 receptor agonists BIMU 8, BIMU 1, renzapride and of the 5-HT1p receptor agonist 5-hydroxyindalpine on basal and electrically evoked outflow of tritium were studied in guinea-pig longitudinal muscle myenteric plexus preparations preincubated with [3H]choline. Muscle contractions were recorded simultaneously. BIMU 8 caused a calcium dependent and tetrodotoxin sensitive increase in basal [3H]outflow that was assumed to represent release of [3H]acetylcholine. In addition, BIMU 8 enhanced the release of [3H]acetylcholine and twitch contractions evoked by submaximal electrical stimulation. Ondansetron (1 μmol/l) did not change the effects of BIMU 8, but DAU 6285 and tropisetron (each 1 μmol/l) competitively antagonized the various facilitatory effects of BIMU 8 with pA2 values of 7.0–7.2 (DAU 6285) and 7.0–7.3 (tropisetron). The phosphodiesterase inhibitors IBMX and rolipram did not increase the effects of BIMU 8. BIMU 1 and renzapride also concentration-dependently increased basal release of acetylcholine, and release and contractions caused by submaximal stimulation. The effects of BIMU 1 and renzapride were competitively antagonized by 1 μmol/l tropisetron (pA2 6.6–7.1). The EC50 values for the increase in the evoked [3H]acetylcholine release and contractions were closely similar. 5-Hydroxyindalpine did not change basal release and slightly inhibited the evoked release of [3H]acetylcholine. Release of acetylcholine and contractions elicited by submaximal stimulation were strongly inhibited by ( + )-tubocurarine which indicates that nicotinic ganglionic transmission is involved in this kind of release. The results suggest that BIMU 8, BIMU 1 and renzapride stimulate 5-HT4 receptors at cholinergic interneurones and thereby facilitate nicotinic ganglionic transmission in the myenteric plexus. Cyclic AMP is probably not involved in the 5-HT4 receptor mediated facilitation of acetylcholine release.
    Type of Medium: Electronic Resource
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  • 12
    Electronic Resource
    Electronic Resource
    Springer
    Der Radiologe 37 (1997), S. 486-489 
    ISSN: 1432-2102
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 13
    ISSN: 1432-2153
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics , Technology
    Type of Medium: Electronic Resource
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  • 14
    Electronic Resource
    Electronic Resource
    Springer
    Der Radiologe 37 (1997), S. 331-332 
    ISSN: 1432-2102
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 15
    ISSN: 1432-2102
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 16
    ISSN: 1432-1076
    Keywords: Key words Term newborns ; Dyspnoea ; Volume expansion ; Bicarbonate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In a prospective, randomised, open trial 103 term newborns with persisting dyspnoea, tachypnoea and/or cyanosis were treated with oxygen for 5–10 min and then with oxygen plus mask continuous positive airway pressure (CPAP) for another 5–15 min. Cases with overt prenatal or intrapartum obstetric pathology had been excluded from the study. Forty-one infants (40%) responded to this procedure within 10–25 min. The remaining 62 infants (60%) were randomly allocated to one of three forms of further treatment: continuation of mask CPAP for 20 min (group A, n = 24), volume expansion with 9 ml of 3 ml albumin, 3 ml glucose, and 3 mEq of sodium bicarbonate (group B, n = 24), or volume expansion with 4.5 ml albumin and 4.5 ml glucose (group C, n = 14). There was no statistical difference in birth weight, gestational age or Apgar scores at 1 and 5 min between the infants of the groups. Time to normalisation of symptoms was significantly shorter in the volume expansion groups (B: 45 ± 41 min, range 20–180, and C: 80 ± 72 min, range 20–210) than in the mask CPAP group (A: 224 ± 256 min, range 30–1200, P = 0.02). There were statistical differences in umbilical cord and capillary pH values among the infants of the three groups, but the response to therapy was not related to the degree of acidaemia. Thirty-four infants (33%) who did not respond were admitted to a special care unit for further examination (group A: 21/24, group B: 7/24; group C: 6/14). Of these, 23 had no abnormal findings, 8 infants had radiological signs of transitory respiratory distress, and 1 had a non-tension pneumothorax. Septicaemia was found in two infants. No infant was intubated. At discharge all 103 infants did well. Conclusion Incremental application of simple primary care procedures including volume expansion (with or without alkali) in term newborns with persisting postnatal tachypnoea and dyspnoea helps avoid overtreatment and unnecessary separation from the mothers in most cases and reliably selects infants who need close monitoring or special treatment.
    Type of Medium: Electronic Resource
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  • 17
    ISSN: 1432-1076
    Keywords: Term newborns ; Dyspnoea ; Volume expansion ; Bicarbonate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Abstract In a prospective, randomised, open trial 103 term newborns with persisting dyspnoea, tachypnoea and/or cyanosis were treated with oxygen for 5–10 min and then with oxygen plus mask continuous positive airway pressure (CPAP) for another 5–15 min. Cases with overt prenatal or intrapartum obstetric pathology had been excluded from the study. Forty-one infants (40%) responded to this procedure within 10–25 min. The remaining 62 infants (60%) were randomly allocated to one of three forms of further treatment: continuation of mask CPAP for 20 min (group A,n=24), volume expansion with 9 ml of 3 ml albumin, 3 ml glucose, and 3 mEq of sodium bicarbonate (group B,n=24), or volume expansion with 4.5 ml albumin and 4.5 ml glucose (group C,n=14). There was no statistical difference in birth weight, gestational age or Apgar scores at 1 and 5 min between the infants of the groups. Time to normalisation of symptoms was significantly shorter in the volume expansion groups (B: 45±41 min, range 20–180, and C: 80±72 min, range 20–210) than in the mask CPAP group (A: 224±256 min, range 30–1200,P=0.02). There were statistical differences in umbilical cord and capillary pH values among the infants of the three groups, but the response to therapy was not related to the degree of acidaemia. Thirty-four infants (33%) who did not respond were admitted to a special care unit for further examination (group A: 21/24, group B: 7/24; group C: 6/14). Of these, 23 had no abnormal findings, 8 infants had radiological signs of transitory respiratory distress, and 1 had a nontension pneumothorax. Septicaemia was found in two infants. No infant was intubated. At discharge all 103 infants did well. Conclusion Incremental application of simple primary care procedures including volume expansion (with or without alkali) in term newborns with persisting postnatal tachypnoea and dyspnoea helps avoid overtreatment and unnecessary separation from the mothers in most cases and reliably selects infants who need close monitoring or special treatment.
    Type of Medium: Electronic Resource
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  • 18
    ISSN: 1432-1459
    Keywords: Key words Systemic lupus ; erythematosus ; Central nervous ; system ; Cognitive deficits ; Antineuronal antibodies ; Magnetic ; resonance imaging ; Positron ; emission tomography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Central nervous system (CNS) involvement in systemic lupus erythematosus (SLE) remains difficult to diagnose, particularly since structural abnormalities may not be revealed by magnetic resonance imaging (MRI). Glucose utilisation was measured by positron emission tomography (PET) in 35 SLE patients to detect signs of CNS involvement. The patients were examined by a standardised neurological examination, a battery of tests to evaluate neuropsychological performance and MRI. Antineuronal antibodies were determined to investigate their putative role in CNS involvement in SLE. Twenty patients had distinct neurological (17) and/or psychiatric (3) symptoms. Ten patients had pronounced cognitive impairment. Neurological and cognitive deficits were thus found to be unrelated disorders in SLE. Global glucose utilisation of SLE patients did not differ significantly from that of normal controls, nor were differences found between SLE patients with or without neurological or cognitive abnormalities. On MRI of the brain, the number and size of white matter lesions correlated with the presence of neurological deficits but were unrelated to the severity of cognitive impairment. Within the normal range, lower global glucose utilisation tended towards lower values with increasing number and size of white matter lesions. Patients with lesions larger than 8 mm also showed distinctly increased IgG anticardiolipin antibody titres, whereas measuring antineuronal antibodies did not reveal any relation to the variables investigated. We conclude that the demonstration of CNS lesions by MRI can contribute confirmatory evidence for CNS involvement in SLE, but PET or the presence of antineuronal antibodies adds little if any information beyond that obtained by clinical examination, neuropsychological testing, and MRI.
    Type of Medium: Electronic Resource
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  • 19
    ISSN: 1432-1459
    Keywords: Parkinson's disease ; Motor fluctuations ; Sinemet CR
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract One hundred and seventy patients with fluctuating Parkinson's disease participated in an international clinical trial to compare the effects of controlled-released Sinemet 50/200 (mg carbidopa/mg levodopa; Sinemet CR) with standard Sinemet 25/100 (Sinemet STD). The study design involved an 8-week open-label titration (dose-finding) phase (STD and CR preparations given individually during weeks 1–4 and 5–8 respectively) followed by a 24-week double-blind, double-dummy (placebo) treatment period. Drug efficacy was assessed using: (a) data from patients' diaries (i.e. “on-off” periods) (b) the functional disability profile (Northwestern University Disability Scale), (c) the neurological signs and symptoms (New York University Parkinson's Disease Scale, NYUPDS), (d) global evaluations made by the patient and treating physician and (e) the patient's evaluation of sleep. The results indicate that the number of “off” periods and the total NYUPDS score decreased significantly in the patients treated with Sinemet CR compared with those treated with Sinemet STD. Furthermore, the patient's global evaluation was significantly better in the Sinemet CR group. The number of drug-related adverse experiences was similar in the two groups, and only one serious event of this nature was reported.
    Type of Medium: Electronic Resource
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  • 20
    Electronic Resource
    Electronic Resource
    Springer
    Archives of gynecology and obstetrics 262 (1998), S. 81-86 
    ISSN: 1432-0711
    Keywords: Key words: Amniotic fluid insulin ; Normal range ; Nondiabetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Elevated amniotic fluid insulin levels in diabetes are frequently described but there are few systematic data on metabolically healthy women to define normal ranges. Previous studies had too high normal ranges because they were based on unspecific insulin binding radioimmunoassays. The aim of the study was to update normal amniotic fluid insulin data and to define a reliable normal range in the course of a nondiabetic pregnancy. Amniotic fluid insulin levels were measured in 841 amniotic fluid samples of 707 nondiabetic women undergoing amniocentesis for hydramnios, suspected malformation, determination of lung maturation, Rhesus antibodies and cordocentesis. Mean (±SD) of amniotic fluid insulin level was 3.6 (±2.1) μU/mL at 31.5 (±4.9) weeks of pregnancy. The 97th percentile was 8.2 μU/mL. Insulin levels show a biphasic course between 16th and 42nd weeks of pregnancy with a zenith at 30th week. Only two cases (0.3%) had unexplicably elevated amniotic fluid insulin levels ≥10 μU/mL. Thus, in nondiabetic women amniotic fluid insulin levels 〉10 μU/mL are unlikely.
    Type of Medium: Electronic Resource
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