[Etanercept in routine German clinical practice to treat rheumatoid arthritis patients : A one-year observational study on effectiveness, safety and health economics]. / Etanercept in der klinischen Routinebehandlung von Patienten mit rheumatoider Arthritis : Eine einjährige nichtinterventionelle Studie zur Bewertung der Wirksamkeit und Sicherheit.

BACKGROUND: The efficacy and safety of the TNF­α inhibitor etanercept (ETA) as a treatment for rheumatoid arthritis (RA) is well established by randomized controlled trials. The purpose of this study was to evaluate the benefit yielded by ETA within the regular outpatient care. PATIENTS AND METHODS: This prospective non-interventional trial included patients being treated with ETA. Data concerning efficacy, safety and life quality were collected over a period of 52 weeks. Statistical evaluation was done on a solely descriptive level. RESULTS: From 329 specialized medical centres, 4945 patients were enrolled. Of all patients, 94.4% received a co-medication for RA, additionally to their treatment with ETA. At baseline, 22.1% of all patients fulfilled the criteria for functional remission according to the Funktionsfragebogen Hannover (FFbH) questionnaire (95% CI: 21.0-23.3%); at 52 weeks, functional remission rate accounted for 41.1% (last observation carried forward [LOCF], 95% CI: 39.4-42.9%). The disease activity score (DAS) DAS28 declined from 5.4 ± 1.3 (N = 4304) to 3.3 ± 1.4 (as observed; N = 2608). EuroQol EQ-5D, a measurement of health-related life quality issues, indicated an improvement on the visual analogue scale (VAS) from 53.1 ± 21.3 mm (N = 4718) at baseline to 70.0 ± 20.5 mm (as observed; N = 3036). Generally, ETA has been tolerated well. With regard to the safety profile specified by previous studies, no meaningful deviations concerning the nature, frequency or severity of adverse events were detected. CONCLUSION: Based on a large number of patients and in a treatment context that is representative of routine outpatient care in Germany, it was confirmed that patients with RA may benefit from a treatment with ETA.

[Therapeutic approaches of general practitioners and rheumatologists in South Germany in rheumatoid arthritis and gonarthrosis]. / Therapieprinzipien von Hausärzten und Rheumatologen in Süddeutschland bei rheumatoider Arthritis und Gonarthrose.

Using "paper patients" we compared the therapeutic approaches of general practitioners and rheumatologists to rheumatoid arthritis and to osteoarthritis of the knee. The mailed survey contained a mild, a moderate and a severe case of rheumatoid arthritis (RA) and a case of osteoarthritis (OA) of the knee. 111 out of 252 general practitioners and 78 out of 132 rheumatologists selected at random participated in the study. We found that rheumatologists would choose more non-steroidal anti-inflammatory drugs (NSAID), disease modifying antirheumatic drugs (DMARD), steroids and physical therapy. In case 4 (OA of the knee) rheumatologists would more frequently recommend analgesics, local steroids, occupational therapy, surgery and ortheses. Primary care physicians on the other hand prescribed more chondroprotective agents. Patients with RA and OA of the knee would be treated differently by primary care physicians and rheumatologists. In order to develop a more uniform therapeutical concept and therefore to reach a better management of the rheumatic patient, a close co-operation of the two physician groups is needed.

Therapeutic approaches of German and Turkish physicians to rheumatoid arthritis and to osteoarthritis of the knee.

Our objective was to compare the therapeutic approaches of German and Turkish physicians to rheumatoid arthritis (RA) and to osteoarthritis (OA) of the knee, by means of a mailed survey. The survey contained four case histories representing a mild, a moderate and a severe case of RA and a case of OA of the knee. One hundred and thirty-two physicians from Germany (internal medicine based (IR) and orthopaedics based (OR) rheumatologists) and thirty-three from Turkey (rheumatologists and physical medicine and rehabilitation specialists (PT)) participated in the study. German respondents would give more disease-modifying drugs (DMARD) in early RA (48.7% vs 18.2%, p < 0.05), whereas their Turkish colleagues would prescribe more analgesics, ultrasound and kryotherapy in OA of the knee (63.6% vs 22.1%, 30.3% vs 6.5% and 24.2% vs 0.0% respectively p < 0.05). German physicians chose more exercise, physical and occupational therapy, radiation synovectomy and surgery in all cases. In OA of the knee German OR's would recommend less analgesics, but more local steroids, chondroprotective agents and surgery than the other groups. We may conclude that clinical practice of RA and OA of the knee differs considerably in Germany and Turkey. Cultural, social, educational and economic factors could influence the decisions of the physicians.

Quantitative evaluation of ototoxic side effects of furosemide, piretanide, bumetanide, azosemide and ozolinone in the cat--a new approach to the problem of ototoxicity.

A new method for the quantitative assessment of acute ototoxic side effects of drugs is described. It is suitable for screening purposes. The method is based on the determination of the toxic dose (TD50) which causes a defined hearing loss in 50% of the animals tested. The hearing loss is defined as a complete suppression of the compound action potential (CAP) of the auditory nerve, elicited by clicks 30 dB above threshold. This is approximately equivalent to a clinical hearing loss of 30 dB. The TD50 is used to estimate the therapeutic range. With this approach ototoxic side effects of furosemide, piretanide and bumetanide were compared quantitatively in cats. The TD50 values for CAP suppression were 18.37 mg/kg for furosemide; 4.29 mg/kg for piretanide and 2.21 mg/kg for bumetanide. As equipotent diuretic doses are 2.61 mg/kg for furosemide, 0.26 mg/kg for piretanide and 1.16 mg/kg for bumetanide, it appears that the relative ototoxicity is least for piretanide and highest for bumetanide. Plasma concentrations, determined initially and when recovery of CAP to 50% of control had occurred, indicate that bumetanide may be more slowly eliminated from the cochlear spaces than furosemide and piretanide. In addition azosemide and ozolinone were tested. The TD50 for azosemide was less than 10 mg/kg. With ozolinone where there are two isomers, only the diuretic (-)ozolinone was ototoxic; the TD50 was less than 100 mg/kg.(ABSTRACT TRUNCATED AT 250 WORDS)

Interaural attenuation in the cat, measured with single fibre data.

Acoustic crosstalk was measured in the pentobarbital anesthetized cat using the responses of single units in the auditory nerve to ipsilateral and contralateral sound stimuli. The mean interaural attenuation (IATT) was found to be 76 dB between 350 and 18,000 Hz. No systematic variation of IATT with frequency was found although a large variation between different units with similar characteristic frequencies could be seen. We suggest that this scatter is due to the complex fine structure of the bone conduction pathways (Tonndorf (1966) Bone conduction. Acta Otolaryngol. Suppl. 213, 1-132). There are large discrepancies between these data and values obtained using cochlear microphonic potentials as an indicator. We suggest that cochlear microphonic crosstalk data in the literature should be treated with caution as it is extremely difficult to exclude the effect or direct electrical crosstalk on these analog signals.