Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 51-52 (May 1996), p. 21-26 
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 51-52 (May 1996), p. 27-32 
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 1432-0428
    Keywords: Keywords OLETF ; xylose ; SGLT1 ; intestinal hypertrophy ; glucose absorption ; postprandial hyperglycaemia.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Otsuka Long-Evans Tokushima Fatty (OLETF) rats are reported to be obese Type II (non-insulin-dependent) diabetic rats with insulin resistance and impaired insulin secretion. To investigate the contribution of intestinal glucose absorption to postprandial hyperglycaemia, we determined the plasma xylose concentrations after an 0.8 g/kg oral xylose load which was used as a test of small intestinal glucose absorption in 6-week-old OLETF rats and weight-matched Long-Evans Tokushima Otsuka (LETO) rats. An oral glucose tolerance test showed that OLETF rats developed hyperglycaemia at 60 and 90 min after the glucose load, though the fasting plasma glucose concentration, insulin concentration and insulin-induced in vivo glucose utilization rate were similar. Consistently, in an oral D-xylose loading test, the peak concentration of plasma xylose in OLETF rats was increased by 58.7 % compared with that of LETO rats (p 〈 0.005). The disappearance rate of plasma xylose concentrations after intravenous xylose loading did not differ between the two strains. Co-treatment with 0.4 g/kg phlorizin, a specific inhibitor of sodium-dependent glucose transporter 1 (SGLT1), abolished both plasma glucose and xylose concentrations after the loads. Morphological studies showed that both the small intestinal wet weight and surface area were 30 % larger in the OLETF rats than in the LETO rats. Furthermore, the SGLT1 mRNA content of OLETF rats also increased compared with LETO rats. These results suggest that an increased SGLT1 expression concomitant with intestinal hypertrophy in OLETF rats is partly associated with postprandial hyperglycaemia before the onset of insulin resistance and hyperinsulinaemia. [Diabetologia (1998) 41: 1459–1466]
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 1432-055X
    Keywords: Schlüsselwörter Sevofluran ; Kontrollierte randomisierte Studie ; Kinderanästhesie ; Inhalationseinleitung ; Fluorid ; Key words Sevoflurane ; Controlled randomized study ; Children ; Inhalation induction ; Fluoride
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Due to its low blood:gas partition coefficient (0.69) and its neutral odor, sevoflurane (S) is suitable for inhalational induction of anaesthesia. At the moment halothane (H) is preferentially used for this purpose due to its non-irritating odor and the smoothness of anaesthetic action. However, experience is limited with the use of S in children, and concern exists about potential renal toxicity of its metabolite, i.e. fluoride. Therefore, we compared S and H in an open, randomized phase III trial. Material and methods. With approval of the ethics committee and written informed parental consent, 40 children (age 1–10, mean 5.3 years, ASA class I and II) had anaesthesia induced without premedication (fresh gas flow 6 l/min, N2O/O2=65/35). Concentration of volatile anaesthetics was increased every 3–5 breaths (S: 0.8…3.2 vol%, H: 0.4…1.6 Vol%). The ciliary reflex was tested until it disappeared. Airway reflexes and excitation were quantified using a score. Upon venipuncture, relaxation and intubation, anaesthesia was maintained with S (Fi: 2.4 vol%) or H (Fi: 1.2 vol%) in N2O/O2 (3 l/min, etCO2 35–38 mm HG). Alfentanil was supplemented in repeated doses of 20 μg/kg. ECG, NIBP, SpO2, Fi and Fet of CO2 and volatile anaesthetics were continuously recorded. At the end of surgery anaesthetics were terminated abruptly and fresh gas flow was increased to 6 l/min O2. Time to the first purposeful movement was registered. Serum fluoride levels were determined immediately after venipuncture, at the end of surgery and 70 min later. Time to possible discharge from the PACU was quantified using a modified Aldrete score. Data were analysed with descriptive methods, Student's t-test or non-parametric tests as appropriate. Results. Groups did not differ with respect to age, weight, sex, or type of surgery. Total dose of anaesthetics was 1.60 MACxh for S and 1.77 MACxh for H (p=0.68). Table 6 shows the essential data. Mean arterial blood pressures and heart rate remained within ±20% of age-related normal values (Table 7). Mean serum fluoride level was 23.1±1.2 μmol/l at the end of surgery and decreased to 18.6±0.970 min later (Fig. 3). Conclusions. Sevoflurane is an alternative to halothane in pediatric inhalational anaesthesia, with a comparable, low incidence of airway irritation and smoothness of induction. Because of the significantly faster induction and recovery it seems superior to halothane. With the fluoride levels measured, an impairment of renal function is unlikely.
    Notes: Zusammenfassung Bei Kindern, dem wesentlichen Patientenkollektiv für inhalative Narkoseeinleitungen, liegen nur geringe Erfahrungen mit dem vermutlich besonders geeigneten Sevofluran vor. In einer offenen, randomisierten Studie haben wir daher Einschlaf- und Aufwachzeiten, Atemwegsreflexe und Kreislaufwirkungen von Sevofluran (S) mit denen von Halothan (H) bei Kindern (Alter 1–10 Jahre) während mindestens einstündigen Eingriffen verglichen. Mit Zustimmung der Ethikkommission wurden 40 Kinder der Risikogruppen ASA I und II nach schriftlicher Einwilligung der Eltern rekrutiert. Die Narkosen wurden ohne Prämedikation mit ansteigenden Konzentrationen von S oder H in N2O/O2 (65:35) induziert. Der Frischgasflow (FGF) betrug 6 l/min. Nach Relaxation und Intubation wurden die Narkosen mit S (Fi 2–2,4 Vol.-%) oder H (1,1–1,4 Vol-%) in N2O/O2 (65:35, 3 l/min) weitergeführt. Zur Ausleitung wurde der FGF auf 6 l/min erhöht. Fluoridspiegel wurden bei Einleitung, am Narkoseende sowie 70 min nach Narkose bestimmt. Die Gruppen waren biometrisch vergleichbar. Blutdruck und Herzfrequenz waren in beiden Gruppen stabil. Die Einschlafzeit betrug 183±32 (H) bzw. 129±34 s (S) (p〈0,01), die Aufwachzeit 775±314 (H) bzw. 468±194 s (S) (p〈0,01). Nach S wurden die Kinder 4,6 min früher extubiert (p〈0,01). Die Atemwegsverträglichkeit war bei beiden Gasen gut. Der Fluoridspiegel (S) betrug am Narkoseende 23,1±1,2 μmol/l, 70 min später 18,6±0,9 μmol/l (p〈0,01). Mit Sevofluran steht ein neues, sicheres Anästhetikum für die Kinderanästhesie zur Verfügung, das bei vergleichbar geringer Atemwegsirritation wegen der höheren Induktions- und Aufwachgeschwindigkeit dem Halothan überlegen ist. Die Fluoridwerte unter S lassen eine wesentliche Beeinträchtigung der Nierenfunktion nicht erwarten.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Inorganic phosphate (Pi) uptake by the marine cyanophyte Synechococcus sp. NIBB 1071 was studied using cells grown in an artificial seawater medium. The phosphate uptake was markedly enhanced in cells grown in the medium of low phosphate concentrations (phosphate-limited cells) than in cells grown in the phosphate-rich medium (phosphate-replete cells). The diagnosis of kinetics of instantaneous phosphate-uptake showed that V max of the former was more than two orders of magnitude greater than that of the latter, and the k m of the former was about 1/20 of that of the latter. The enhancement of the phosphate uptake was completed after a 40-h incubation of phosphate-replete cells in the phosphate-free medium. The activation was suppressed by chloramphenicol, an inhibitor of protein synthesis. The uptake developed in phosphate-limited cells was energy dependent and susceptive to osmotic shock, which suggests the involvement of a periplasmic phosphate-binding protein, analogous to that found in heterotrophic gram-negative eubacterial cells. The relationship between phosphate quota and growth rate, together with the kinetical data for phosphate uptake, predicted that ambient phosphate as low as 0.5 nM could support cell growth at a rate of one division per day. Results indicate that cells can grow rapidly even at phosphate concentrations as low as nanomolar levels. A possible regulatory mechanism of phosphate uptake in marine Synechococcus spp. is discussed in relation to a wide distribution of this picophytoplankton in the ocean environment.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    ISSN: 1432-1238
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A new facility using 6 MeV/n heavy-ion beams is described along with preliminary results of its applications to biophysical investigations. The beams are obtained at the terminal of the injector linac installed in the heavy-ion medical accelerator in Chiba. Various ion species (He–Xe) having different charge states are accelerated to the same velocity, which is suitable for comparing the charge effects of heavy ions. An attempt has been made for investigations of the track structure by using pBR322 plasmid DNA and spores as targets. Newly constructed equipment with the molecular beam source (H2O) placed on this beam line is also described. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 67 (1996), S. 2000-2004 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A new accelerator facility and two irradiation methods using 6 MeV/n heavy-ion beams are described along with preliminary results concerning their applications to biophysical investigations. The beams are obtained from the injector linac installed at the Heavy Ion Medical Accelerator in Chiba. Various ion species (He–Xe) having different charge states are accelerated to the same velocity, which is suitable for comparing the charge effects of heavy ions in the high linear energy transfer region. An attempt has been made to test the usefulness of the apparatus for studying track structure by using pBR322 plasmid DNA and spores as targets in vacuum. Newly constructed equipment with a molecular-beam source (water vapor) placed on this beam line is also described. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 53 (1998), S. 0 
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    ISSN: 1365-2958
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: We have shown previously that induction of the stringent response in Bacillus subtilis resulted in the arrest of chromosomal replication between 100 and 200 kb either side of oriC at distinct stop sites, designated LSTer and RSTer, left and right stringent terminators respectively. This replication checkpoint was also shown to involve the RTP protein, normally active at the chromosomal terminus. In this study, we show that the replication block is absolutely dependent upon RelA, correlated with high levels of ppGpp, but that efficient arrest at STer sites also requires RTP. DNA–DNA hybridization data indicated that one or more such LSTer sites mapped to gene yxcC (−128 kb from oriC ). A 7.75 kb fragment containing this gene was cloned into a theta replicating plasmid, and plasmid replication arrest, requiring both RelA and RTP, was demonstrated. This effect was polar, with plasmid arrest only detected when the fragment was orientated in the same direction with respect to replication, as in the chromosome. This LSTer2 site was further mapped to a 3.65 kb fragment overlapping the next40 probe. Remarkably, this fragment contains a 17 bp sequence (B′-1) showing 76% identity with an RTP binding site (B sequence) present at the chromosomal terminus. This B′-1 sequence, located in the gene yxcC, efficiently binds RTP in vitro, as shown by DNA gel retardation studies and DNase I footprinting. Importantly, precise deletion of this sequence abolished the replication arrest. We propose that this modified B site is an essential constituent of the LSTer2 site. The differences between arrest at the normal chromosomal terminus and arrest at LSTer site are discussed.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...