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  • 1
    Electronic Resource
    Electronic Resource
    Synaptic organization of the dorsal lateral geniculate nucleus in the adult hamster (1985)
    Springer
    Anatomy and embryology 171 (1985), S. 223-234 
    Details
    ISSN: 1432-0568
    Keywords: Lateral geniculate nucleus ; Retinal axons ; Horseradish peroxidase ; Hamster ; Synaptic organization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The synaptic organization of the α sector of the dorsal lateral geniculate nucleus has been examined by electron microscopy in normal adult hamsters and in adult hamsters subjected to unilateral eye enucleation or intravitreal injection of horseradish peroxidase. Two types of neuropil are apparent. Islands of complex neuropil partially enclosed by astrocyte processes (synaptic glomeruli) are surrounded by a sea of simpler non-glomerular neuropil. The latter is dominated by small axon terminals with spherical synaptic vesicles and Gray type 1 axodendritic contacts (SR-boutons) and also contains axon terminals with flattened synaptic vesicles (F-boutons). The glomerular neuropil contains (i) exclusively postsynaptic dendrites and dendritic protrusions of presumptive projection cells; (ii) pre- and postsynaptic pleomorphic-vesiclecontaining P-boutons (interpreted as appendages of the dendrites of interneurons); (iii) large axon terminals containing spherical synaptic vesicles and large pale mitochondria (R-boutons) which were experimentally identified as retinal terminals and which are presynaptic to both projection cell dendrites and P-boutons at Gray type 1 contacts; (iv) F-boutons (minority component). F-boutons and P-boutons are presynaptic to both projection cell dendrites and P-boutons and P-boutons are the intermediate elements of various serial synapses including triplet (triadic) synapses. Medium-large terminals with spherical synatpic vesicles and dark mitochondria (RLD-boutons) which were commonly invaginated by dendritic spines of projection cells in small glomerulus-like formations were also identified. The origin of RLD-boutons is unknown but SR-boutons probably derive chiefly from ipsilateral visual cortex and possibly also from superior colliculus, and non-glomerular F-boutons probably originate in the ipsilateral thalamic reticular nucleus. No differences in synaptic organization were found between the part of the nucleus which receives uncrossed retinal input and the part which receives crossed input, nor were differences seen in the size, fine structure or relationships between the terminals of identified crossed and uncrossed retinal axons.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00341417
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  • 2
    Electronic Resource
    Electronic Resource
    Lexical and conceptual representation in beginning and proficient bilinguals
    Amsterdam : Elsevier
    Journal of Verbal Learning and Verbal Behavior 23 (1984), S. 23-38 
    Details
    ISSN: 0022-5371
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Education , Psychology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0022-5371(84)90489-4
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  • 3
    Electronic Resource
    Electronic Resource
    Heparan sulphates upregulate regeneration of transected sciatic nerves of adult guinea-pigs (1999)
    Oxford, UK : Blackwell Science Ltd
    European journal of neuroscience 11 (1999), S. 0 
    Details
    ISSN: 1460-9568
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The increased content of soluble glycosaminoglycan-containing forms in sciatic nerves during recovery from crush injury [Shum & Chau (1996) J. Neurosci. Res., 46, 465] suggests that the glycosaminoglycans modulate the environment for post-traumatic tissue remodelling and axonal regrowth. To test this, defined amounts of soluble heparan sulphates from bovine kidney or guinea-pig nerve were introduced into the regenerating environment via silicone conduits that bridged 8-mm gaps of transected sciatic nerves of adult guinea-pigs. Controls were bridged using the phosphate-buffered saline (PBS) vehicle or a chondroition sulphate preparation from whale cartilage. After timed periods of recovery, the animals were assessed for electromyographic signals at the target gastrocnemius muscle to determine the conduction velocity across the bridged nerve. Sections of the bridge were also histologically examined for nerve fibres. Transected sciatic nerves bridged with heparan sulphates or chondroitin sulphate showed earlier stimulated myelination of axons (week 5–6) than PBS-bridged nerves (week 9). Initial electromyographic indication of reconnection with the target was at week 9 post-transection. In the course of 20 weeks, transected sections of the bridge indicated similar numbers of unmyelinated axons irrespective of bridge material, but distinctly higher numbers of myelinated axons in heparan sulphate-bridged nerves than either PBS- or chondroitin sulphate-bridged nerves. At the end of the same period, heparan sulphate-bridged nerves resumed normal conduction velocities, but both PBS- and chondroitin sulphate-bridged nerves remained at 50% of that of the intact contralateral nerves. These results are the first to demonstrate that supplementation of soluble heparan sulphate to the fluid regenerative neural environment can restore functional, axonal reconnection of the severed nerve with the target muscle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1460-9568.1999.00615.x
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  • 4
    Electronic Resource
    Electronic Resource
    Influence of occlusal contact on cervical muscle activity during submaximal clenching (2004)
    Oxford, UK : Blackwell Science Ltd
    Journal of oral rehabilitation 31 (2004), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary  The aim of this study was to clarify the relationship between changes in the occlusal contact area and cervical muscle activity. A decreases in the occlusal contact area using bite planes (stage 1: full contact bite plane, stage 2: bilateral molar removed from contact, and stage 3: bilateral molar and premolar removed from contact) was experimentally simulated in seven subjects (aged 23–25 years) with normal dentition, and muscle activity of the sternocleidomastoid muscle (SCM) and trapezius muscle (TRM) during 50 and 10% of maximum voluntary contraction (MVC) was measured by surface electromyography. The SCM activity during 50% MVC was stage 1: 31·2 ± 9·4 μV and stage 3: 35·3 ± 12·3 μV. The TRM activity during 50% MVC was stage 1: 15·2 ± 0·7 μV and stage 3: 18·3 ± 2·9 μV. At the 50% MVC, stage 3 showed significant differences in comparison with stage 1 (P 〈 0·05, anova). These findings suggested that the sternocleidomastoid and TRM play roles in the exertion of occlusal force, and decreases in the occlusal contact area influence the amount of SCM and TRM activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2842.2004.01265.x
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  • 5
    Electronic Resource
    Electronic Resource
    Cytokine profile of patients with bullous pemphigoid (1994)
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 130 (1994), S. 0 
    Details
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2133.1994.tb06902.x
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  • 6
    Electronic Resource
    Electronic Resource
    Detection of low energy pions at a tagged photon beam
    Amsterdam : Elsevier
    Nuclear Instruments and Methods in Physics Research Section A: 276 (1989), S. 233-236 
    Details
    ISSN: 0168-9002
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0168-9002(89)90638-4
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  • 7
    Electronic Resource
    Electronic Resource
    Purification and properties of β-amylase from Bacillus circulans S31 (1994)
    Springer
    World journal of microbiology and biotechnology 10 (1994), S. 597-598 
    Details
    ISSN: 1573-0972
    Keywords: Amylases ; Bacillus ; enzyme ; maltose ; starch ; thermotolerant
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract A thermotolerant β-amylase was purified from Bacillus circulans S31 isolated from soil in Hong Kong. The purified enzyme has an M r of 64 kDa and was stable at 50°C and pH 7.0 for 30 min. Its K m for starch was 0.9 mg/ml with a V max of 0.3 mg/min. It was not activated by any metal ion although sulphydrys reagents were inhibitory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00367677
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  • 8
    Electronic Resource
    Electronic Resource
    Production of thermotolerant β-amylase byBacillus circulans (1993)
    Springer
    World journal of microbiology and biotechnology 9 (1993), S. 50-52 
    Details
    ISSN: 1573-0972
    Keywords: β-Amylase ; Bacillus ; soil isolate ; thermotolerant enzyme
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract An isolate from a Hong Kong soil sample which produced β-amylase was identified as a thermotolerant strain ofBacillus circulans with a growth range of 35 to 55δC. The β-amylase was stable at 45°C for 30 min but lost half of its activity after 30 min at 50°C. Maximum specific activity of β-amylase (36.2 units/mg protein) in the culture broth was detected after 36 h of cultivation at 45°C in a medium containing soluble starch, beef extract, coconut water and inorganic salts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00656515
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  • 9
    Electronic Resource
    Electronic Resource
    Lower gastrointestinal tract perforation in preterm infants treated with dexamethasone for bronchopulmonary dysplasia (1997)
    Springer
    Pediatric surgery international 12 (1997), S. 211-212 
    Details
    ISSN: 1437-9813
    Keywords: Key words Dexamethasone ; Ileum ; Perforation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Two cases of ileal perforation in preterm infants treated with high-dose dexamethasone for bronchopulmonary dysplasia are described. Corticosteroid-induced gastroduodenal haemorrhage or perforation has been well documented, but less known to most clinicians is that the lower gastrointestinal tract can also be involved. Unlike previous reported cases in which affected infants deteriorated rapidly and became moribund within hours of onset of symptoms, “silent” perforations detected on routine radiograph or escaping clinical recognition until at an advanced stage can be the initial presentation. The need for greater vigilance and a low threshold for abdominal investigations are emphasised in preterm infants treated with dexamethasone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003830050111
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  • 10
    Electronic Resource
    Electronic Resource
    Lower gastrointestinal tract perforation in preterm infants treated with dexamethasone for bronchopulmonary dysplasia (1997)
    Springer
    Pediatric surgery international 12 (1997), S. 211-212 
    Details
    ISSN: 1437-9813
    Keywords: Dexamethasone ; Ileum ; Perforation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Two cases of ileal perforation in preterm infants treated with high-dose dexamethasone for bronchopulmonary dysplasia are described. Corticosteroid-induced gastroduodenal haemorrhage or perforation has been well documented, but less known to most clinicians is that the lower gastrointestinal tract can also be involved. Unlike previous reported cases in which affected infants deteriorated rapidly and became moribund within hours of onset of symptoms, “silent” perforations detected on routine radiograph or escaping clinical recognition until at an advanced stage can be the initial presentation. The need for greater vigilance and a low threshold for abdominal investigations are emphasised in preterm infants treated with dexamethasone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01350007
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