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  • Electronic Resource  (18)
  • Polymer and Materials Science  (12)
  • Cytoskeleton  (3)
  • Living donor  (3)
  • 1
    ISSN: 0014-5793
    Keywords: Cytoskeleton ; Erbstatin ; Fibronectin ; Morphology ; Sre ; Tyrosine kinase
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0942-0940
    Keywords: Cytoskeleton ; delayed neuronal death ; nerve growth factor (NGF) ; neurofilament (NF)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We investigated the protective action of nerve growth factor (NGF) on delayed neuronal death, and we also studied the involvement of the 200 kDa neurofilament (NF 200) cytoskeletal proteins. Wistar rats were divided into three groups: Group I, in which transient forebrain ischaemia was produced; Group II, ischaemic group which received intraventricular administration of artificial cerebrospinal fluid (CSF); and Group III, ischaemic group which received intraventricular administration of 2 Μg of 2.5 S NGF. Forebrain ischaemia in these rats was produced by causing transient bilateral occlusion of the common carotid arteries and lowering the mean blood pressure to 50 mmHg for 8 minutes. On the 1st and 7th day after ischaemia we histologically examined neuronal death in the hippocampal CA1 sector. On the 7th day after ischaemia, mean cell death (degenerative cell number/total cell number) was 87±9% in group I (n=7), 51±36% in group II (n=7), and 14±16% in group III (n=8) (p〈0.05 vs. group II). The concentration of NF 200 in the hippocampal homogenate was measured by the Western blotting method on the 1st and 7th day after ischaemia. On the 1st day it was found to be 67±11% of that in the control group in group I (n=6), 73±21% in group II (n=6), and 84±7% in group III (n=6) (p〈0.05 vs. group II). The concentration of NF 200 in all groups remained at the same level until the 7th day after ischaemia (each group, n=6). These results suggest that 1) intraventricular NGF has a protective effect on delayed neuronal death, 2) these protective actions occur within one day after ischaemia, and 3) these effects may be mediated by the suppressed degradation and/or promoted restoration of neuronal cytoskeletal proteins.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-2277
    Keywords: Key words Liver transplantation ; Living donor ; Adult patient ; Right lobe graft ; Small-for-size graft ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-2277
    Keywords: Key words Small bowel transplantation ; Small intestinal transplantation ; Living donor ; Short bowel syndrome ; Portal drainage ; Liver dysfunction ; Pediatric patient
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A living-related small bowel transplantation (SBT) was performed in two pediatric patients with short bowel syndrome. In both cases, the donor was the patient's mother. The distal ileum (100 cm, 120 cm) was harvested and the ileocolic vessels, ileocecal valve, and terminal ileum were left intact. The two donors were discharged from the hospital on postoperative days 15 and 6, respectively. Recipient 1 was a 2 year 6 month-old boy with short bowel syndrome who underwent SBT due to loss of venous access. The graft vein was anastomosed to the recipient's infrarenal inferior vena cava. Despite triple immunosuppression (tacrolimus, steroid, and azathioprine), there were four episodes of rejection. The patient had been on total parenteral nutrition for almost his entire post-transplant course. He died from Pneumocystis carinii pneumonia 16 months after the transplantation. Recipient 2 was a 4 year 5 month-old girl with short bowel syndrome who underwent an isolated small bowel transplantation because of recurrent line sepsis. Her pretransplant bilirubin was 8.0 mg/dl and a biopsy showed severe fibrosis. The graft vein was anastomosed to the recipient's inferior mesenteric vein. After transplantation, her bilirubin level became normal within 10 days. Triple immunosuppression (tacrolimus, steroid, and cyclophosphamide) together with a 3-day course of OKT-3 made her post-transplant course feasible. After overcoming a single episode of rejection she left the hospital 4 months after SBT. The patient is currently (10 months after transplantation) hospitalized due to rejection, which is being successfully controlled, and she is off total parenteral nutrition. From our experience, harvesting of the distal ileum for use as a bowel graft can be safely performed. The advantages of living-related grafts, optimal graft length, and choice of vascular reconstruction in SBT are yet to be explored.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-2277
    Keywords: Key words One-way matching ; Human leukocyte antigen ; Graft-versus-host disease ; Living donor ; Liver transplantation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Although one-way matching between an HLA-homozygous donor and a haploidentical recipient is a recognized risk factor in transfusion-associated graft-versus-host disease (GVHD), its impact in living-related liver transplantation (LRLT) has so far not been investigated. We present a case of fatal acute GVHD in our LRLT program that was attributed to one-way HLA matching between donor and recipient. Although the disappearance of donor cells in peripheral blood was suggested by genetic analysis, severe septicemia led to a fatal outcome. We further reviewed 280 LRLT cases and correlated one-way HLA matching with outcome. A total of 8 out of 280 donors (2.9 %) and 11 out of 278 recipients (4.0 %) were completely HLA homozygous in our LRLT program. Complete one-way HLA matching linked to GVHD was observed in four cases, including the present case. Although other contributing factors also need to be clarified, one-way HLA matching is a definite risk factor for GVHD in LRLT. We advocate caution before proceeding with one-way HLA donor-recipient combinations.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1615-6102
    Keywords: Actin ; Cytoskeleton ; Schizosaccharomyces pombe ; Freeze substitution ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Actin distribution and ultrastructure of the fission yeastSchizosaccharomyces pombe treated with cytochalasin A (CA) were investigated by fluorescence microscopy using rhodamine-conjugated phalloidin (rh-ph) and freeze substitution electron microscopy. Among the cytochalasins tested, CA was most effective and at 5 μg/ ml inhibited the appearance of the actin ring at the cell equator at the stage prior to septum formation and the accumulation of actin dots at the septum-forming site both in wild-type cells and the mutantcdc 11, which is defective in septum formation at restrictive temperature. Freeze substitution electron microscopy of CA-treated cells revealed the displacement and morphological alteration of cytoplasmic vesicles and dictyosomes within 30 min and the appearance of dense bodies in the cytoplasm. A sub-population of cytoplasmic vesicles and dictyosomes were insensitive to CA and maintained their original structure. An electron less dense layer containing filamentous material was noted beneath the plasma membrane and thought to be the area of heavy actin patches stained with rh-ph at the cells ends. These results suggest that CA disrupted an actin network that normally maintains the organization of the secretory pathway involving dictyosomes and vesicles.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 180 (1979), S. 527-532 
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A-2: Polymer Physics 9 (1971), S. 2043-2060 
    ISSN: 0449-2978
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: In order to elucidate the relations between morphological habits and chemical structure of polymers, poly(ethylene sebacate), poly(hexamethylene sebacate) and poly(decamethylene 1,16-hexadecanedicarboxylate) were crystallized from dilute solutions in n-hexanol, isoamyl acetate etc., and were studied with the electron microscopy and x-ray diffraction. The crystal structure of these polyesters are tentatively determined. Morphological “regularity” and “simplicity” of the single crystals are correlated with the chemical structure of the polymers. The crystallization conditions under which “regular” and “simple” single crystals are obtained are relaxed with increase of methylene sequence length in chemical repeat unit. The Bragg extinction bands in the single crystals of poly(hexamethylene sebacate) and poly(decamethylene 1,16-hexadecanedicarboxylate) suggest nonplanar nature of these crystals. The molecular chains in the poly(ethylene sebacate) single crystals are inclined from the normal of the basal plane; the fold surface corresponds to the (001) plane.
    Additional Material: 14 Ill.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 30 (1992), S. 19-24 
    ISSN: 0887-6266
    Keywords: ultrasonic waves ; electrochemical polymerization ; polythiophene ; potential ; current density ; Tafel plot ; conductivity ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The electrochemical polymerization of thiophene was carried out both in the presence and absence of ultrasonic waves. Without irradiation, the anode potential increased with increasing current density. Polymerization at high potential gave a low polymer yield and produced macroscopically heterogeneous films. Ultrasonic irradiation resulted in an improvement of polymer yield and in a lowering of the anode potential during polymerization. The effects were especially marked when the polymerizations were carried out at low temperature, low monomer concentration, and high current density. These results are explained by the formation of diffusion layer in the vicinity of the electrode during electrochemical reactions.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: A matrix effect correction is required to improve the accuracy of quantitative AES analysis. The correction includes terms involving the atomic density (n), electron back-scattering factor (R) and electron escape depth (L). Many schemes have been proposed by various people for corrections of the R and L terms. However, up to now, there have been no systematic investigations of the correction accuracy of the proposed schemes. We have evaluated the correction accuracy, based on measured intensity data for Au—Cu alloys of different compositions. Comparison was made between the observed intensity ratio K (=Iunk/Istd) and the calculated intensity, ratio K′ (= C(nunk/nstd)(Runk/Rstd)(Lunk/Lstd)), where C and I represent the concentration and intensity, respectively. The superscripts ‘unk’ and ‘std’ denote that the parameters are for unknown and standard specimens, here the pure elements. If the correction works well, the error Er (= K′ — K)/(K) will become smaller. Evaluations were carried out on three schemes for the R correction and on seven schemes for the L correction using the Au 239 eV, Au 2024 eV and Cu 920 eV transitions. The root mean square (RMS) of the calculated errors showed several per cent for the best case and 20-30% for the worst case. The RMS error varied a few per cent between schemes for the R correction but it varied ∼30% for the L correction.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
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