It was later found that scopolamine impairment in learning was caused by an increase in benzodiazepine/GABA activity (and that benzodiazepines were not associated with the cholinergic system). In tests of various benzodiazepine compounds, chlordiazepoxide was found to cause the most profound reduction in the turnover of 5HT (serotonin) in rats. Serotonin is closely involved in regulating mood and may be one of the causes of feelings of depression in rats using chlordiazepoxide or other benzodiazepines. In September 2020, the U.S. Food and Drug Administration (FDA) required the boxed warning be updated for all benzodiazepine medicines to describe the risks of abuse, misuse, addiction, physical dependence, and withdrawal reactions consistently across all the medicines in the class. Tolerance and dependence
Tolerance
Chronic use of benzodiazepines, such as chlordiazepoxide, leads to the development of tolerance, with a decrease in number of benzodiazepine binding sites in mouse forebrain. The Committee of Review of Medicines, who carried out an extensive review of benzodiazepines including chlordiazepoxide, found—and were in agreement with the Institute of Medicine (USA) and the conclusions of a study carried out by the White House Office of Drug Policy and the National Institute on Drug Abuse (USA)—that there was little evidence that long-term use of benzodiazepines were beneficial in the treatment of insomnia due to the development of tolerance.
Research
Mogamulizumab is being explored as a treatment for HTLV-1–Associated Myelopathy. An early Phase 1-2a study showed decreased in proviral loads, as well as inflammatory markers in the CSF. 79% of the patients showed reduction in spasticity and 32% showed decrease in motor disability. References
External links
"Mogamulizumab". Drug Information Portal. U.S. National Library of Medicine. "Mogamulizumab-kpkc". National Cancer Institute. 30 August 2018. "Mogamulizumab-kpkc". NCI Drug Dictionary. National Cancer Institute.