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2.
No Shinkei Geka ; 45(8): 677-683, 2017 Aug.
Artigo em Japonês | MEDLINE | ID: mdl-28790213

RESUMO

Cervical carotid aneurysms are rare, and surgical treatment should be planned for each patient. The authors report 9 cases of cervical carotid aneurysm in 9 patients(mean age, 53.7 years;5 men)who were treated surgically between 2005 and 2014. The aneurysm was located in the internal carotid artery in 6 patients, the common carotid artery in 2 patients, and the carotid bifurcation in 1 patient. Four aneurysms were recurrences after a previous endovascular intervention(parent artery coil embolization, covered stent placement, or stent with coil embolization). The mean interval between the endovascular therapy and the onset of the present illness was 6 years. All the patients presented a mass effect at the neck, including lower cranial nerve dysfunction in 1 patient. Two patients presented with ischemic events presumably due to thromboembolism from the target aneurysms. Surgical treatments included local vascular reconstruction procedures in 6 patients(interposition vein or artificial graft bypass in 5 patients and in situ bypass in 1 patient). Four aneurysms were then resected. Two patients with rich collateral blood flow were treated with ligation of the parent artery proximal to the aneurysm. Surgical complications included embolic stroke and cranial nerve dysfunction in 2 patients, respectively, both presumably due to surgical manipulation. The modified Rankin scale(mRS)score at discharge was 0 in 5 patients, 1 in 1 patient, 2 in 2 patients, and 6 in 1 patient(vascular tumor). Surgical treatment of cervical carotid aneurysms seems a reasonable treatment of choice, but lower nerve dysfunction and embolism from the aneurysm should be avoided.


Assuntos
Aneurisma/cirurgia , Doenças das Artérias Carótidas/cirurgia , Adolescente , Adulto , Idoso , Aneurisma/diagnóstico por imagem , Angiografia , Doenças das Artérias Carótidas/diagnóstico por imagem , Feminino , Humanos , Imageamento Tridimensional , Masculino , Pessoa de Meia-Idade , Tomografia Computadorizada por Raios X
3.
J Am Chem Soc ; 126(2): 432-3, 2004 Jan 21.
Artigo em Inglês | MEDLINE | ID: mdl-14719917

RESUMO

Hexagonal or tetragonal packing of columnar stacks in crystals and liquid crystals has been observed for a series of molecules possessing a fullerene apex and an aromatic cone that are connected with a Si-C connection. The columnar stacking of the new shuttlecock molecules is constitutionally stable but conformationally flexible due to the large cavity created on the top of the fullerene molecule.

4.
J Am Chem Soc ; 124(27): 7892-3, 2002 Jul 10.
Artigo em Inglês | MEDLINE | ID: mdl-12095320

RESUMO

A three-dimensional packed vesicular assembly was successfully prepared by using an organic-inorganic hybrid, the Cerasome. This assembly was achieved by using an alternate layer-by-layer adsorption technique with the anionic and the cationic Cerasome derived from corresponding organoalkoxysilane amphiphiles. Adsorption quantities of each Cerasome layer were evaluated by employing a quartz crystal microbalance. The surface structure of the Cerasome paving on a substrate obtained in this way was observed by atomic force microscopy. The Cerasome particles closely packed like a stone pavement were clearly observed in both layers. In addition, the difference in the particle size for each layer indicates the cationic and anionic Cerasomes undoubtedly formed the layer-by-layer assembly. The layered paving of the vesicular nanoparticles was seen in every layer at least up to ten adsorption steps.


Assuntos
Cerâmica/química , Bicamadas Lipídicas/síntese química , Bicamadas Lipídicas/química , Lipossomos/química , Nanotecnologia , Tamanho da Partícula
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