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Biomedical subjects

S Bahar

Publications and source records attributed to S Bahar.

28 records · Page 2Linked to original sources
PubMed1993

Spontaneous dissection of the extracranial vertebral artery with spinal subarachnoid haemorrhage in a patient with Behçet's disease.

A 40-year-old man with known definite Behçet's disease (BD) was admitted with confusional state which had started 4 days before admission with an acute headache and vomiting. Neurological examination revealed confusion, stiff neck, right facial weakness, left hemiparesis, dysartria and truncal ataxia. CSF was haemorrhagic and xanthochromic. Cranial CT scans were negative, but MRI showed a right pontine hyperintense lesion on T2-weighted images. Bilateral carotid angiograms were normal. Right vertebral angiogram showed findings consistent with a dissection at the V2 segment of the artery. At the level of the fifth cervical vertebra, a radiculomedullary branch of the vertebral artery with an aneurysmal dilatation in its intradural portion was notable. This case shows that, in BD, aneurysm formation can also occur in a spinal artery and spontaneous vertebral artery dissection can be seen.

Adult↗
PubMed1989

Neurologic involvement in Behçet's syndrome. A prospective study.

We investigated the prevalence and type of neurologic involvement in Behçet's syndrome in a prospective protocol. Of 323 consecutive patients with Behçet's syndrome seen during a 12-month period, 46 underwent neurologic evaluation because of headaches and/or neurologic symptoms and signs. Only 17 (5.3%) were found to have involvement of the nervous system. Hemispheric lesions were as common as brain-stem involvement. Headaches were of no clinical importance unless accompanied by other neurologic findings. Computed tomographic scans were of little diagnostic help. After 12 +/- 4 (SD) months of follow-up, only three patients showed worsening of their neurologic findings.

Adult↗
PubMed1989

Production of intracellular alpha-glucosidase in brewery waste by Saccharomyces carlsbergenesis.

Saccharomyces carlsbergensis strain ATCC 9080 was grown on acid hydrolyzed brewery waste. The substrate contains 22 mg/ml of total carbohydrates of which approximately 60% represents reducing sugars such as maltose and glucose. Optimal conditions for substrate hydrolysis were 1.5% w/v sulfuric acid, 20 minutes and temperature of 110 degrees C. Maximum enzyme production was obtained in a medium containing 0.05% w/v yeast extract at 35 degrees C and at an initial pH of 6. Addition of nitrogen sources was unnecessary. Optimal conditions for alpha-glucosidase extraction from yeast included pH 7.5, 30 degrees C, and 10 minutes of sonication. Maximum hydrolysis of PNPG occurred at pH 7.5, temperature between 30 degrees C and 25 minutes of incubation. Michaelis-Menten constants and Vmax were 1 mM, 0.56 mol/min/mg of protein on P-nitrophenly-alpha-D-glucophyra-noside and 5 mV, 5 mol/min/mg of protein on maltose respectively.

Culture Media↗
PubMed1983

Aneurysmal bone cysts of the occipital bone.

Two cases of aneurysmal bone cysts are reported. Each patient presented with a palpable mass in the occipital region and signs of compression of structures in the posterior fossa. One of the cases is unique, in that the aneurysmal bone cyst was associated with an epidural hematoma in the posterior fossa. The pertinent literature is reviewed.

Adolescent↗