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Biomedical subjects

E Tüzün

Publications and source records attributed to E Tüzün.

10 recordsLinked to original sources
PubMed2004

Etanercept treatment in corticosteroid-dependent myasthenia gravis.

The authors report a prospective pilot trial of etanercept in corticosteroid-dependent autoimmune myasthenia gravis. Eleven patients were enrolled, with eight completing the 6-month trial. Two patients were withdrawn owing to disease worsening, and one patient was withdrawn because of an erythematous skin rash. Six of the eight patients who completed the trial improved, based on quantitative measures of muscle strength and lowering of corticosteroid requirement.

Adult↗
PubMed2001

Potassium channel antibodies in two patients with reversible limbic encephalitis.

Limbic encephalitis (LE) is often associated with lung, thymic, or testicular tumours and antibodies to Hu, CV2, or Ma2 (Ta) antigens. In these cases, it generally has a poor prognosis. Here we describe two patients with symptoms of LE, negative for typical paraneoplastic antibodies, in whom antibodies to voltage-gated potassium channels (VGKC) were detected retrospectively in serial serum samples. Patient 1 had a thymoma recurrence, but in patient 2 no tumour has been detected in the years following presentation. Plasma exchange was effective in reducing VGKC antibody levels, with substantial improvement in mental symptoms in patient 1. In patient 2, the VGKC antibodies fell spontaneously over two years, with almost complete recovery of mental function. Although neither patient had obvious neuromyotonia at presentation, both showed excessive secretions. We suggest that patients with limbic symptoms and excessive secretions should be tested for VGKC antibodies, and, if they are present, prompt and effective immunosuppressive treatment should be considered.

Aged↗
PubMed2001

Paroxysmal attacks in multiple sclerosis.

Paroxysmal attacks are short, frequent and stereotyped symptoms that can be observed in multiple sclerosis (MS) patients. We evaluated retrospectively the clinical and neuroradiological findings of patients, who developed any paroxysmal attacks during the course of their disease. EDSS scores, MS clinical types and disease durations of 59 patients with paroxysmal attacks (Group 1) were compared to 586 consecutive patients without paroxysmal attacks recorded in our MS database (Group 2). Anatomical and clinical correlation was attempted in 31 of the patients who had MRI examinations performed within 6 months of the paroxysmal attacks. EDSS scores of patients in Group 1 at the time of the paroxysmal attacks were significantly lower than the scores at their last clinic visit whereas there were no significant differences for other parameters. Our results demonstrate that paroxysmal attacks occur early in the course of the disease, when there is little or no neurologic disability and associated tissue damage.

Brain↗
PubMed2000

Longterm follow-up of electroencephalographic and clinical findings of a case with Gaucher's disease type 3a.

Among three recognised clinical phenotypes, type 3a Gaucher's disease is characterised by mild to severe systemic disease, neurological manifestations and myoclonic seizures. We report the long term clinical and electrophysiological follow-up of a 27-year old man with a diagnosis of type 3a Gaucher's disease, which was confirmed by bone marrow biopsy examination and leukocyte glucocerebrosidase level measurement. His neurological examination was normal throughout the follow-up period. EEG examination, recorded five days after the first seizure, revealed generalised nonrhythmic paroxysmal rapid spikes with occipital predominance increased by photic stimulation and normal background activity. The frequency of seizures increased from 3-4/year to 1-2/month within a follow-up period of 12 years and a repeat EEG examination on the eight year of diagnosis revealed additional background slowing. A giant potential was obtained in somatosensory evoked potential (SEP) examination. EEG findings of this case demonstrate a specific pattern with rapid spike activity, photosensitivity, eye closure sensitivity and gradual background slowing.

Adolescent↗
PubMed2000

Possible role of gangliosides in salivary gland complications of diabetes.

Gangliosides have previously been considered to be possible antigenic sites in Type 1 diabetes. Lymphocytic infiltration of Langerhans islands is the pathologic hallmark of autoimmune diabetes and may also be observed in salivary glands in experimental diabetes. Diabetic complications of parotid and submaxillary glands may therefore be related with an autoimmune process against sialoglycoconjugates of salivary gland tissue.

Diabetes Mellitus, Type 1↗
PubMed1998

Anterior choroidal artery territory infarction: a case report and review.

A patient was admitted with frequent episodes of transient neurologic symptoms formerly described as "capsular warning syndrome". The neurologic examination revealed right-sided hemiplegia, diminished pinprick, decreased light touch and extensor right plantar response. The only documented risk factor was hypertriglyceridemia, and diagnosis was anterior choroidal artery territory infarction. This report critically reviews the clinical features of this vascular lesion and the MRI findings.

Adult↗
PubMed1998

Intracavernosal endothelin levels of impotent men before and after papaverine induced penile erection.

OBJECTIVES: Endothelin and nitric oxide (NO) are modulating factors of vascular tonus. Recent data have given support to the assumption that penile erection is the consequence of competition of vasodilator NO and vasoconstrictor endothelin on penis. Reported that atherosclerotic vascular disease is presented with increased endothelin and decreased NO release, this study was designed to search for a similar endothelin alteration in corpus cavernosum of penis. METHODS: Intracavernosal entothelin levels of 33 important men with arteriogenic impotence before and after papaverine-induced penile erection were examined by using radioimmunoassay kits. RESULTS: The intracavernosal endothelin levels of arteriogenic impotent men in our study were not altered both in the flaccid and papaverine-induced erectile state. CONCLUSIONS: The lack of alteration was concluded to be the possible result of cavernosal damage in arteriogenic impotence leading to diminished release of NO and increased release of endothelin.

Adult↗
PubMedDate not supplied

F wave parameters and F tacheodispersion in mild diabetic neuropathy.

F tacheodispersion and some F wave parameters have previously been suggested to be useful in the detection of peripheral nerve involvement in diabetic patients with normal nerve conduction studies. In this study, ulnar and tibial F wave parameters of diabetic cases with normal motor and sensory nerve conduction studies (Group 1) were calculated, F tacheodispersion histograms were constructed and compared with the same parameters obtained from the normal controls (Control group) and diabetic cases with abnormal motor and sensory nerve conduction examinations (Group 2). There was a tendency towards lower conduction velocities in ulnar and tibial tacheodispersion histograms of Group 1 and Group 2, as compared to Control group. Most of the F wave values were significantly abnormal in Group 2 in comparison to other two groups, whereas statistically significant differences between Group 1 cases and Control group were found in minimum ulnar F wave conduction velocity (FCVmin), mean ulnar FCV (FCVmean), tibial FCVmin and tibial FCVmean values. Unlike other methods, F waves give information about the entire length of the motor nerve fiber. In mild neuropathies, in which nerve fibers are damaged uniformly, testing the whole length of a nerve with this method may be beneficial in detection of a mild conduction abnormality.

Adult↗