[Likely degenerative affection with predominant sensory systems involvement (anosmia, agueusia, deafness) (author's transl)].
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The authors illustrate the technical characteristics of a low cost, pocket electrogustometer, which works on batteries and offers complete safety both for the patient and for the examiner; this model is able to carry out, both in normal and selected patients, the same functions as can be carried out with more sophisticated and costly equipment, currently available.
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This study completes a previous one in which the authors tested the electrogustometric threshold in 300 normal subjects used as controls. The collected datas has been computerized on a programable calculator according to a lognormal model. Comparison between the electrogustometric threshold in diabetic patients, ethylic ones and controls demonstrate that they are statistically different. More than a half of the diabetics and ethylics have abnormaly high electrogustometric thresholds. The responses have been studied as a function of the evolution of the disease, of the clinical form and of gravity. Diabete and chronic ethylism do not disturb the gustatic function at the same speed and with the same intensity: one year evolution is at least necessary for diabetics, and ten years for ethylics in order to detect abnormal electrogustometric thresholds. But if the action of ethylic intoxication is slower, it determines the most important gustometric deteriorations.
For the first time in clinical routine testings impulse-gustometry was used in comparison to normal chemical or electrogustometric methods. Loss of taste caused by tympanoplasty, radiation of tumors in head and neck and accompanying facial nerve palsies was tested. The exactly defined location of the stimulus is known advantage in electrogustometry. Impulse-gustometry, however, is able to stimulate different taste sensations like the chemical methods. The sensible sensation, therefore, is eliminated. The stimulating pulses ranged between 0,5 and 2,0 ms at frequencies of 10 to 300 cps. Like with Krarup's method in impulsegustometry there is not always a taste sensation.
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The relation between age and taste threshold in populations living both in Istanbul and Resadiye, a town located in eastern part of Turkey, was investigated. In Turkey the nontaster/taster ratio has been found lower than in the other countries of Europe and Asia (3 ,4 ,8 ,9). With aging the taste sensitivity of tasters does diminish. However, the differences in the taste threshold levels of nontasters, in different age groups, have been found as being statistically not significant.
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Chemosensory disorders have been receiving increasing clinical attention but remain a difficult diagnostic problem. With the development of several well-standardized testing methods, taste or smell loss can now be verified, and this has added to knowledge concerning the common causes of dysfunction. Diagnosis typically rests upon the history and physical examination, but, except in the case of obstructive nasal and sinus pathologic conditions, therapy usually remains elusive.
The present study introduces a novel measure of adenosine receptor sensitivity that is based on the action of specific receptor blockers (e.g., caffeine) to potentiate the ability to detect threshold quinine concentrations. The test is used to compare gustatory adenosinergic responses to caffeine challenges in normal controls and patients with panic disorder or posttraumatic stress disorder (PTSD). Panic disorder patients had an exaggerated response to the caffeine challenge that was not found in controls or PTSD patients, although the latter had higher anxiety scores on psychometric tests. The results are related to a model in which A1-adenosine receptors up-regulate in an attempt to modulate hyperactive excitatory neuronal systems.
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Olfactory and gustatory function can be reiably studied in patients with craniofacial anomalies over the age of 7 years. In our unoperated patients with orbital hypertelorism or craniofacial dysostosis, preoperative evaluation of the olfactory and gustatory functions showed normal values. The same techniques were employed to study any changes in these modalities following reconstructive craniofacial surgery, and the results are presented.
The olfactory, auditory, and gustatory functions of 20 women with gonadal dysgenesis were studied. Various abnormalities of these functions were found, and they occurred principally in patients with mosaicism of the sex chromosomes. This is further evidence of the increased likelihood of various somatic abnormalities among women with gonadal dysgenesis, and particularly among those who carry more than one line of sex chromosomes.
In spite of the normal clinical appearance of the oral mucosa, BMS subjects do have demonstrated changes in sensory perception and salivary factors in addition to alterations in psychologic features. Although some of these changes may be suggestive of a peripheral or central dysfunction of small afferent nerve fibres, the extent of this alteration and its cause both remain unclear. The existence of changes other than psychologic, however, do weaken the proposition that BMS has a primarily psychogenic origin and suggests instead that future research should address the question of other organic changes in BMS.