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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 103 (1981), S. 5459-5466 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Diabetologia 19 (1980), S. 114-117 
    ISSN: 1432-0428
    Keywords: Insulin secretion ; human islets of Langerhans ; pancreatic β-cell ; tissue culture
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Islets of Langerhans were isolated by collagenase digestion from the pancreas of a 39 year-old female renal transplant donor. The islets were subjected to three consecutive periods of tissue culture, after each of which they were incubated in vitro with various agents whose effects on insulin release from islets of laboratory animals have previously been established. After the first culture period, the basal insulin secretion rate of 5.2 μU/islet/h seen with 2 mmol/l glucose was increased approx. 5-fold on raising the glucose concentration to 20 mmol/l. The islets retained the insulin-secretory response to 20 mmol/l glucose throughout the period of study. Insulin secretion was also stimulated by mannose, leucine, α-ketoisocaproate, dihydroxyacetone and 3-hydroxybutyrate, but not by fructose or N-acetyl-glucosamine. Fructose however increased insulin release in the presence of 4 mmol/l glucose. Caffeine elicited insulin release in the absence of glucose and enhanced insulin release in response to 10 mmol/l glucose. Glucose-stimulated insulin release was inhibited by trifluoperazine (25 μmol/l).
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Diabetologia 25 (1983), S. 31-35 
    ISSN: 1432-0428
    Keywords: Morphometry ; endocrine cells ; human fetal pancreas ; immunocytochemistry ; pancreatic polypeptide-rich lobules
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Sections of pancreas from human fetuses, 6–20 weeks gestation, were stained with immunoperoxidase for insulin (B cells), glucagon (A cells), pancreatic polypeptide or somatostatin (D cells). Morphometric analyses were performed on sections from head and tail regions of each fetus. No stained cells were found at 7 weeks. A, B, pancreatic polypeptide and D cells were found at 9 weeks in primitive islets or as isolated cells adjacent to duct cells. There was no relationship between the density of each endocrine cell type and fetal age, but there was a significant increase in the relative density (percentage total endocrine cells) of D cells from 10–20 weeks (p〈0.01). The tail contained significantly more A cells (p〈 0.05) and less pancreatic polypeptide cells (p〈0.01) than the head but similar densities of B and D cells. Lobules containing a high density of pancreatic polypeptide cells and few A cells were found in the posterior part of the head in six fetuses, aged 10–20 weeks.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-1041
    Keywords: phenoperidine ; diazepam ; endoscopy ; pre-medication ; random and double blind ; upper gastrointestinal endoscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary A variety of agents are used as premedication for upper gastrointestinal endoscopy (U.G.E.). To our knowledge, no double blind studies have been performed to compare their value. In this study phenoperidine (2 mg i.v.) was compared with diazepam (5 mg i.v.) in 200 consecutive patients undergoing elective U.G.E. The study was randomized and double blind in regard to both endoscopists and patients. All patients were given atropine (0.4 mg i.v.) and a throat spray with 2% amethocaine. Patients who needed supplemental medication were given diazepam and excluded from final analysis. A graded questionnaire was recorded by endoscopists and patients after U.G.E., and a further anonymous questionnaire was returned by patients four days later. Statistical analysis revealed that phenoperidine was superior at facilitating intubation and providing more relaxation as judged by the endoscopist. Patient questionnaires, four days after U.G.E., indicated less distress during intubation and examination with phenoperidine. Nausea, vomiting, amnesia and phlebitis were uncommon after either phenoperidine or diazepam.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral rehabilitation 10 (1983), S. 0 
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Mechanical attachments used to improve retention of overdentures have their limitations. With the recent development of the cobalt-samarium magnet an alternative method of achieving increased overdenture retention is offered. The most suitable form of magnet appears to be of a reverse split pole design with a ferromagnetic disc or keeper which will ensure a closed magnetic field. Clinical techniques involve conventional endodontic therapy, and the basic method of overdenture construction can be followed with only minor modification.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral rehabilitation 10 (1983), S. 0 
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: It has been suggested that masticatory efficiency is directly related to the area of the occlusal surfaces that make contact. However, little work has been carried out to determine if occlusal wear increases the area of contact, and controversy exists as to whether this would be an advantage. Using a wax registration method, occlusal contact area was measured in a group of individuals with either local or generalized wear, before and after treatment. The changes in occlusal contact area were statistically significant for the group exhibiting generalized wear but not for the group exhibiting localized wear.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral rehabilitation 9 (1982), S. 0 
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Mechanical and adhesive properties of polycarboxylate and glass ionomer cements were studied. Water had an adverse effect on the compressive and tensile strengths of both materials. Both cements showed good bonding to enamel and dentine. Bonds between polycarboxylate cement and sterling silver were strong enough to cause cohesive failure of the cement rather than adhesive failure, when the specimens were tested. Surface cleaning and conditioning with 5% sodium hypochlorite solution showed an improvement in the bonds of the cements to dentine and they were significantly stronger than the bonds formed after the use of 50% citric acid solution (ASPA conditioner.)
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral rehabilitation 8 (1981), S. 0 
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A new group of dental cements for cavity lining and pulp capping is reported. The mechanical and adhesive properties of the cements, which were designated cement I, II and III, were assessed and compared with a commercially available polycarboxylate cement and calcium hydroxide containing material. The experimental cements were mechanically suitable for use as base materials and proved to be adhesive to dentine, especially cement I which gave adhesive bond values comparable to those of the polycarboxylate cement.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary. The effect of cervical suture on pregnancy outcome was studied in 194 women with a high risk (approximately 30%) of having a late abortion or a preterm delivery. The women were randomly allocated either to have a cervical suture inserted (n=96) or to be managed without a suture (n=98). There was no evidence that cervical cerclage either prolonged gestation or improved survival. Patients allocated to receive cerclage spent significantly longer in hospital, even when the period of admission for insertion was excluded. The patients in the cerclage group were more likely to receive tocolytic drugs, and more of them experienced puerperal pyrexia, although these differences between the groups were not statistically significant.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Clinical and experimental pharmacology and physiology 9 (1982), S. 0 
    ISSN: 1440-1681
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: 1 [3H]-Clonidine binds to membranes prepared from guinea-pig spleen with high affinity.2 Kinetic experiments indicated that [3H]-clonidine associates rapidly to the binding site and that the binding is reversible. A study of the dissociation of [3H]-clonidine from splenic membranes revealed two components. The slowly dissociating component corresponded to a high affinity process (Kd= 2.1 nmol/1) in good agreement to that obtained by saturation analysis.3 Over the concentration range used, saturation experiments revealed only a single population of sites with a dissociation constant (Kd) of 2.4 nmol/1 and a density of 5.1 pmol/g wet weight tissue.4 Examination of the relative potency of a series of α-adrenoceptor agonists and antagonists indicates that [3H]-clonidine binding is to (α2-adrenoceptors.5 High levels of binding were obtained to lymphocytes prepared from guinea-pig spleen and to membranes from the splenic capsule. Pretreatment of animals with 6-hydroxydopamine produced changes in apparent affinity of binding with little change in the number of receptor sites.6 It is concluded that [3H]-clonidine labels a site resembling the a2-adrenoceptor in guinea-pig spleen. Few if any of these sites are located prejunctionally and a significant fraction are associated with lymphocytes.
    Type of Medium: Electronic Resource
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