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Biomedical subjects

R Arold

Publications and source records attributed to R Arold.

36 records · Page 2Linked to original sources
PubMed1975

The effect of clonidine treatment on the salivary glands of the rat. Results of biochemical and histological investigations.

The side-effects of clonidine, dryness of the mouth and parotid pain, as displayed by this clinically frequently used antihypertensive drug prompted us to investigate its effect on the salivary glands of the rat. After daily intraperitoneal injections for 3 weeks clonidine decreased the specific amylase content of the submaxillary glands caused by fall of activity in 2 of the 4 isoamylases. On the other hand, both activity of alpha-amylase and its isoenzyme pattern remained unchanged in the parotid glands as did their histological and histochemical appearance. The lymph nodes situated in front of the submaxillary glands, however, were considerably affected showing large abscesses. In the adjacent glandular parenchyma, round cell infiltrations and, occasionally, acinic cell necroses were observed.

Amylases↗
PubMedDate not supplied

Comparison of the TEMPO+ ear-level speech processor and the cis pro+ body-worn processor in adult MED-EL cochlear implant users.

A study was conducted to compare the new MED-EL TEMPO+ ear-level speech processor with the CIS PRO+ body-worn processor in the COMBI 40/COMBI 40+ implant system. Speech tests were performed in 46 experienced subjects in two test sessions approximately 4 weeks apart. Subjects were switched over from the CIS PRO+ to the TEMPO+ in the first session and used only the TEMPO+ in the time between the two sessions. Speech tests included monosyllabic word tests and sentence tests via the telephone. An adaptive noise method was used to adjust each subject's scores to approximately 50%. Additionally, subjects had to complete a questionnaire based on their 4 weeks of experience with the TEMPO+. The speech test results showed a statistically significant improvement in the monosyllabic word scores with the TEMPO+. In addition, in the second session, subjects showed a significant improvement when using the telephone with the TEMPO+, indicating some learning in this task. In the questionnaire, the vast majority of subjects found that the TEMPO+ allows equal or better speech understanding and rated the sound quality of the TEMPO+ higher. All these objective and subjective results indicate the superiority of the TEMPO+ and are mainly attributed to a new coding strategy called CIS+ and its implementation in the TEMPO+. In other words, based on the results of this study, it appears that after switching over from the CIS PRO+ to the TEMPO+, subjects are able to maintain or even improve their own speech understanding capability.

Adult↗