Der Schmerz
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Review Comparative Study
[Serotonin receptor 1A-modulated dephosphorylation of glycine receptor α3: a new molecular mechanism of breathing control for compensation of opioid-induced respiratory depression without loss of analgesia].
To control the breathing rhythm the medullary respiratory network generates periodic salvo activities for inspiration, post-inspiration and expiration. These are under permanent modulatory control by serotonergic neurons of the raphe which governs the degree of phosphorylation of the inhibitory glycine receptor α3. ⋯ Our physiological investigations show that this 5-HTR(1A)-GlyRα3 modulation allows treatment of respiratory depression due to opioids without affecting the desired analgesic effects of opioids. The molecular mechanism presented here opens new pharmacological possibilities to treat opioid-induced respiratory depression and respiratory disorders due to disturbed inhibitory synaptic transmission, such as hyperekplexia.
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Comparative Study
[Back pain and social status among the working population: what is the association? Results from a German general population survey].
Little empirical evidence is available on differential associations between social status indicators and back pain in Germany. This study therefore systematically evaluated associations between different indicators of social status and back pain. ⋯ Back pain cannot generally be regarded as a symptom of a low social status. However, social inequality is of major importance regarding the prediction of severe back problems. A better understanding of mediating factors is essential for the prevention and therapy.
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There is evidence on the importance of fear avoidance beliefs (FAB) as prognostic risk factors in elderly patients suffering from chronic low back pain (CLBP). However, so far there is no validated German instrument for measuring FAB in elderly CLBP patients. The aim of the study presented was to evaluate the psychometric properties of the Catastrophizing Avoidance Scale D-65+ (CAS-D-65+) within a population of elderly patients with CLBP. ⋯ As shown in this study the CAS-D-65+ is a reliable and a valid instrument for the assessment of FAB in older patients with CLBP.
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Meta Analysis Comparative Study
Meta-analysis of dropout rates in randomized controlled clinical trials: opioid analgesia for osteoarthritis pain.
The interpretation of opioid studies in patients with chronic pain due to osteoarthritis is limited by a high dropout rate. Therefore, the implication of dropouts on the recommendation of opioids in chronic osteoarthritis pain was analyzed. ⋯ In spite of analgesic effects, many osteoarthritis patients prefer to stop chronic opioid use, because of adverse events. Therefore, opioids are not generally recommended in osteoarthritis.