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Biomedical subjects

F C Rose

Publications and source records attributed to F C Rose.

At least 91 records · Page 5Linked to original sources

Food related antibodies in headache patients.

Highly sensitive and specific methods for assaying IgE and IgG4 for antibodies in serum have been developed in order to test a recent suggestion that food allergy is a major cause of migraine. Sera were collected from 208 adults--74 with dietary migraine, 45 with non-dietary migraine, 29 with cluster headache and 60 controls. No significant differences were identified between any of the groups with the one exception that cluster headache patients had significantly raised levels of total serum IgE: this difference may be explained by the high proportion of smokers. Mean IgG4 titres to cheese, milk and chocolate were very similar in the dietary and non-dietary migraine patients and the control subjects, though lower in the cluster headache patients. There was, therefore, no evidence that the food intolerance often associated with migraine headaches is associated with a conventional allergic mechanism.

Cluster Headache↗

Pressor sensitivity to tyramine in patients with headache: relationship to platelet monoamine oxidase and to dietary provocation.

The pressor responses to oral and intravenous tyramine were not different from controls in migrainous patients with or without a history of attacks triggered by foods. However, patients who reported a dietary trigger were more likely to develop headache after tyramine administration than those without such a dietary history. Pressor responses to intravenous tyramine in patients with cluster headache were indistinguishable from controls. A group of five males with platelet monoamine oxidase activity one standard deviation or more below that of male controls required less intravenous tyramine to raise blood pressure by 30 mm Hg than males with monoamine oxidase levels within one standard deviation of the controls. This finding suggests that platelet monoamine oxidase activity to some extent reflects that of total body monoamine oxidase A plus B.

Administration, Oral↗

Paroxysmal language disturbance in an epileptic treated with clobazam.

An 18-year-old male student had a 3-month history of partial seizures with cognitive symptomatology, with occasional secondary generalization. After 3 weeks of treatment with clobazam 20 mg a day, the patient developed, in association with his seizures, a neologistic jargon dysphasia but with loss of inflection, volume, and rhythm of speech, presumably as a result of the effect of the clobazam.

Adolescent↗

Platelet monoamine oxidase: specific activity and turnover number in headache.

Monoamine oxidase turnover numbers (molecules of substrate converted to product per minute per active site) have been calculated for the human platelet enzyme using [3H]pargyline. Headache patients with high and low monoamine oxidase specific activities relative to controls were found to have turnover numbers very close to those for controls. This finding suggests that their specific activities vary because of differences in the concentration of active monoamine oxidase molecules, rather than differences in the ability of those enzyme molecules to catalyse the deamination reaction.

Binding Sites↗

Platelet phenolsulphotransferase deficiency in dietary migraine.

Patients with dietary migraine were found to have significantly lower levels of platelet phenolsulphotransferase activity than either migrainous patients without a history of dietary provocation or normal controls. Of the two known human variants of this enzyme, the phenol-inactivating P form, for which no endogenous substrate has so far been identified, was more severely involved than the M enzyme, which inactivates monoamines (including tyramine). Such commonly implicated dietary triggering agents as chocolate and cheese may contain as-yet-unidentified phenolic substrates of phenolsulphotransferase P; if the platelet enzyme deficiency were mirrored by low gut activity, abnormally large amounts of potentially toxic substances might gain access to the circulation in consequence.

Adult↗

A comparison of phenytoin and pheneturide in patients with epilepsy: a double-blind cross-over trial.

A double-blind cross-over trial between pheneturide and phenytoin in ninety-four outpatients with epilepsy is described. There was no significant difference between the frequency of seizures in the two groups. The difficulties in comparing two anticonvulsants of similar efficacy are discussed particularly in relation to ethical problems, the selection of patients and trial design.

Adolescent↗

Migraine patients exhibit abnormalities in the visual evoked potential.

An experiment is described which compared visual evoked potential (VEP) amplitudes and latencies in normal subjects and migraine patients. Several VEP abnormalities were found: at vertex and to a lesser extent at temporal sites, P100-N120 amplitudes were larger in patients; at vertex and temporal sites N120 amplitudes were larger in patients; at temporal sites patents had larger N120-P200 amplitudes but smaller P100 amplitudes. Peak latencies of the VEP were also found to be abnormal in patients. At vertex, patients had delayed N120 peak latencies while at temporal sites delays were found in the P200 latencies. Patients were subdivided according to side of headache. Right-sided headache patients showed larger temporal P100 amplitudes and larger left temporal P100-N120 amplitudes than bilateral headache patients.

Adult↗

Platelet size: no correlation with migraine or monoamine oxidase activity.

A Coulter Model "S Plus" counter has been used to study platelets from 39 migrainous patients between attacks, six during attacks, eight with active cluster headache and 26 controls. None of the patient groups showed any abnormality in platelet size profile. There was no correlation between platelet monoamine oxidase activity and mean platelet volume in any of the groups.

Adult↗

Posture and lumbar puncture headache: a controlled trial in 50 patients.

A prospective single blind trial in 50 patients was performed to investigate the effect of posture on post lumbar puncture headache (LPH). A difference between the frequency of headache at five hours between the two groups (prone for four hours, versus 30 degrees head down tilt for 30 minutes followed by supine posture for 3 1/2 hours) did not reach significance. These findings do not support the suggestion that a prone posture, by possibly reducing cerebrospinal fluid (CSF) leakage, significantly reduces the frequency of this common clinical problem. The value of bed rest after lumbar puncture remains equivocal. Other methods used for reducing LPH are reviewed.

Clinical Trials as Topic↗

North West Thames registry of neurological disease.

A feasibility study has been carried out to determine whether a population-based registry of neurological disease can be established using the Hospital (Inpatient) Activity Analysis (HAA) records for England and Wales. The study provides a valuable opportunity to use and test the HAA system. The neurological disease chosen was the Guillain-Barré-Strohl syndrome (GBS), because it would be expected that most patients would be admitted to hospital, and recurrent attacks or chronicity are rare. In this study it has been demonstrated that, for GBS, a neurological registry, based on HAA records, provided an excellent source of data to measure the incidence of the disease and potentially any change of incidence over time. The proportion of coding errors was found to be under 5%.

England↗

Dysarthria.

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Adult↗