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  • 1
    Electronic Resource
    Electronic Resource
    Central projections of the sensory innervation to the middle cerebral artery in the squirrel monkey (1992)
    Springer
    Acta neurochirurgica 119 (1992), S. 104-110 
    Details
    ISSN: 0942-0940
    Keywords: Brainstem projections of the trigeminal nerve ; cerebral vessels ; Squirrel monkey
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary To analyze the brainstem projections of the innervation to the middle cerebral artery (MCA) in the squirrel monkey, transganglionic tracing of wheat germ agglutinin conjugated with horseradish peroxidase (WGA-HRP) was used. After application of WGA-HRP to the middle cerebral artery (MCA), labelled cell bodies were identified in the ipsilateral trigeminal and superior cervical ganglia. In the brainstem, positive labelling indicative of preterminals and terminals occurred in a discontinuous pattern throughout the trigeminal brainstem nuclear complex. At the level of the obex, nerve terminations were identified in the nucleus tractus solitarius, nucleus motorius dorsalis nervi vagi and the nucleus nervi hypoglossi. Positive WGA-HRP profiles were also observed in the periaqueductal gray matter.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01541792
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    A primate model for acute and late cerebral vasospasm: Angiographic findings (1992)
    Springer
    Acta neurochirurgica 118 (1992), S. 130-136 
    Details
    ISSN: 0942-0940
    Keywords: Angiography ; squirrel monkey ; subarachnoid haemorrhage ; vasospasm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A subarachnoid haemorrhage (SAH) in the squirrel monkey was produced by injection of blood via a permanently implanted catheter connected to the cisterna magna and a cannula stereotactically inserted into the interpeduncular cistern. Repeated angiographic examinations of the vertebro-basilar and right internal carotid arteries revealed a biphasic vasospasm with a maximal acute spasm at ten minutes and maximal late spasm at six days after blood injection. The present study has shown that a reproducible biphasic vasospasm can be produced in the squirrel monkey and evaluated by repeated angiographic examinations. The model is suitable in the study of basic mechanisms underlying vasospasm in a primate and, due to the size of the animal, autoradiographic evaluation of the cerebral blood flow and metabolism can be performed at an acceptable cost.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01401298
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Effect of lesioning of medullary catecholamine neurons or the median eminence on the development of cerebral vasospasm in the squirrel monkey (1992)
    Springer
    Acta neurochirurgica 118 (1992), S. 137-145 
    Details
    ISSN: 0942-0940
    Keywords: A 2 nucleus ; median eminence ; cerebral vasospasm ; squirrel monkey
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Injections of blood into the interpeduncular fossa and cisterna magna in the squirrel monkey produce an angiographically demonstrable, biphasic cerebral vasospasm with a maximal acute spasm at ten minutes and a maximal late spasm at six days after the subarachnoid haemorrhage (SAH). Selective lesioning of the A 2 nucleus in the medulla oblongata or the median eminence in the hypothalamus prior to the SAH prevents the development of both the acute and late cerebral vasospasm. The present data indicate that the A 2 nucleus and the median eminence participate in the development of vasospasm in the squirrel monkey.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01401299
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  • 4
    Electronic Resource
    Electronic Resource
    Brain stem haemorrhage during transsphenoidal surgery (1993)
    Springer
    Acta neurochirurgica 125 (1993), S. 188-191 
    Details
    ISSN: 0942-0940
    Keywords: Brain stem haemorrhage ; dural arteriovenous malformation ; pituitary adenoma ; transsphenoidal surgery
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The authors report a case of pituitary adenoma associated with dural arteriovenous malformation (AVM), which caused brain stem haemorrhage during transsphenoidal surgery. The manoeuvre of increasing the endexpiratory pressure in order to push the suprasellar component of the adenoma down to the sella turcica could be the reason of this bleeding. The authors therefore recommend that in cases of such a combination any manoeuvres which are likely to increase the intracranial venous pressure or otherwise affect the intracranial pressure, are avoided. The dural AVM spontaneously regressed after haemorrhage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01401851
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Combined contralateral pterional and interhemispheric approach to a subchiasmal carotid-ophthalmic aneurysm (1988)
    Springer
    Acta neurochirurgica 93 (1988), S. 154-158 
    Details
    ISSN: 0942-0940
    Keywords: Carotid-ophthalmic aneurysm ; clipping ; contralateral pterional approach ; interhemispheric approach
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A subchiasmal carotid-ophthalmic aneurysm was clipped through a combined contralateral pterional and interhemispheric approach. This combined approach seems very useful for some particular aneurysms of this portion because of no dead angle around the aneurysm and the minimum retraction required for the brain and optic nerve. Surgical approaches to subchiasmal carotidophthalmic aneurysms are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01402900
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  • 6
    Electronic Resource
    Electronic Resource
    Effect of spantide, a substance-P antagonist, on cerebral vasospasm in primates (1993)
    Springer
    Acta neurochirurgica 122 (1993), S. 122-126 
    Details
    ISSN: 0942-0940
    Keywords: Vasospasm ; subarachnoid haemorrhage ; squirrelm monkey ; substance P
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Experimental SAH in the squirrel monkey induces an angiographically demonstrable late spasm of about 23% at six days post subarachnoid haemorrhage (SAH). The late spasm is associated with a generalized reduction in cerebral blood flow (CBF) of about 30%. Intracisternal administration of the substance P (SP) antagonist spantide two hours and three days post SAH significantly reduces the degree of late spasm and also decreases the degree of CBF reduction. The findings suggest that SP is involved in the development of both angiographical spasm and CBF changes post SAH.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01446998
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  • 7
    Electronic Resource
    Electronic Resource
    Cerebral blood flow and glucose metabolism in the squirrel monkey during the late phase of cerebral vasospasm (1993)
    Springer
    Acta neurochirurgica 121 (1993), S. 166-173 
    Details
    ISSN: 0942-0940
    Keywords: Cerebral blood flow ; cerebral glucose metabolism ; subarachnoid haemorrhage ; squirrel monkey
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A double-isotope autoradiography technique was used to evaluate cerebral blood flow (CBF) and cerebral glucose metabolism (CMRglu) during the late phase of vasospasm in a squirrel monkey subarachnoid haemorrhage (SAH) model. Cisternal blood injections induced both global and focal changes in CBF and CMRglu six days following SAH, the timepoint of maximal late spasm in this model. There was a global decrease in CBF of about 30% accompanied by an increase in deoxyglucose uptake of about 50%. Four of seven animals also had foci with flow decreased to 40% of control and deoxyglucose uptake increased to 300% of control. There was an altered but still present interdependence between flow and metabolism post SAH.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01809270
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  • 8
    Electronic Resource
    Electronic Resource
    The temporo-polar approach to basilar artery aneurysms with or without zygomatic arch translocation (1994)
    Springer
    Acta neurochirurgica 130 (1994), S. 14-19 
    Details
    ISSN: 0942-0940
    Keywords: Basilar artery aneurysm ; temporo-polar approach ; zygomatic approach
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Since the publication of the temporo-polar approach to basilar artery aneurysms by Sano (1980 and 1987), various modifications of the approach were reported. The approach provides a better view and a wider operating field than the subtemporal or pterional ones. Usually the approach does not need temporary removal of the zygomatic arch. If however, a basilar tip aneurysm is located very high above the posterior clinoid, temporary removal of the zygomatic arch is necessary which is sutured back to its original position at the end of the operation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01405498
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  • 9
    Electronic Resource
    Electronic Resource
    A volatile thallium chelate, (2,2,6,6-tetramethyl-3,5-heptanedionato)Tl(I)
    Amsterdam : Elsevier
    Inorganica Chimica Acta 203 (1993), S. 9-10 
    Details
    ISSN: 0020-1693
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0020-1693(00)82897-2
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  • 10
    Electronic Resource
    Electronic Resource
    Spin-glass behavior with short-range antiferromagnetic order in Nd2AgIn3 (2001)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 79 (2001), S. 4183-4185 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We present experimental results of complex susceptibility, static magnetization, magnetic relaxation, specific heat, and electrical resistivity measurements on an intermetallic compound Nd2AgIn3. The results indicated that Nd2AgIn3 undergoes a spin-glass transition at a freezing temperature Tf=12.6 K accompanied with the formation of short-range antiferromagnetic order. The mechanism of formation of spin-glass state in Nd2AgIn3 is different from that in diluted metallic spin-glass or uranium intermetallic compound. The existences of frustrated moments due to the triangles of nearest neighbors in Nd atomic layers and randomly distributed Ruderman–Kittle–Kasuya–Yosida interactions may be responsible for the spin glass state formed in Nd2AgIn3. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1428114
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