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Gangliosides in human gliomas were investigated and found to have an altered composition and concentration as compared to normal grey and white matter of brain. The major gangliosides GM1, GD1a, and GT1b were markedly reduced in the tumour tissue and in contrast there was an increase of gangliosides GM3 and GD3, which often appeared as the dominating ones.(More)
The proximal migration of a ventriculoperitoneal shunt into the ventricles is very rate. Only 5 cases have been previously reported [4, 8, 10, 11]. We believe that this unusual phenomenon has not been well-studied in the literature. We report a case of a 16-month-old baby girl who suffered a shunt malfunction due to complete migration of the VP shunt into(More)
A technique for skull base dural defect repair is presented, using two layers of periosteum and biological (Tisseel glue), one on either side of the defect. The method is reliable and relatively simple, and was used to repair a recurrent skull base encephalocoele with great success. The method has application in the reconstruction of any dural defect,(More)
The present status and future needs of four coral reef sites (Taba, Nuweiba , Dahab and Sharm El-Sheikh) along the Gulf of Aqaba, Egypt were evaluated. A total of 60 quadrats, distributed at different depths or different patches were surveyed at each site during the year 2007. Three mooring buoys were reported only in Ras Umm Seid but nothing was found in(More)
Energy harvesting devices have been proposed for sensor networking applications where batteries cannot be replaced, and cooperative communication schemes have been used to increase energy efficiency for wireless systems. Here, we develop transmission scheduling schemes for multi-terminal cooperative energy harvesting networks that maximize the packet(More)
Teflon is utilized in neurosurgery as well as in plastic, vascular and heart surgery. Although the effect of Teflon on different types of cells and tissues has been previously studied, we are not aware of any study in which the effect of Teflon was tested on cells of the central nervous system. We have therefore examined the tissue compatibility of spongy(More)
Tissue compatibility of different intracranial implant materials was studied by a tissue culture method using fibroblasts. The same materials were implanted in the crania of rabbits for two months. Undecalcified sections of rabbit crania, including the materials, were stained with Fuchsin and Methylene Blue and Masson-Goldner methods. Soft X-ray was used to(More)
Advances in diagnostic procedures to detect intrauterine hydrocephalus have compelled neurosurgeons to intervene in order to preserve precious neural tissue. We present the first case (to the best of our knowledge) of a successful decrease in intracranial pressure and head circumference by repeated transabdominal intrauterine external drainage. The mother(More)
Among bone marrow cells, hematopoietic and mesenchymal components can contribute to repair damaged organs. Such cells are usually used in acute diseases but few options are available for the treatment of chronic disorders. In this study, we have used a laser-induced model of open angle glaucoma (OAG) to evaluate the potential of bone marrow cell populations(More)
On a global scale, the value of the total economic goods and services provided by coral reefs have been estimated to be US$375 billion per year with most of this coming from recreation, sea defence services and food production, this equates to an average value of around US$6,075 per hectare of coral reef per year. Degradation of reefs means the loss of(More)