Use of antipsychotic medication in chemotherapy-induced nausea and vomiting

Exhaustive in silico design and screening of novel antipsychotic compounds with improved pharmacodynamics and blood-brain barrier permeation properties

Antipsychotic drugs or neuroleptics are widely used in the treatment of psychosis as a manifestation of schizophrenia and bipolar disorder. However, their effectiveness largely depends on the blood-brain barrier (BBB) permeation (pharmacokinetics) and drug-receptor pharmacodynamics. Therefore, in this study, we developed and implemented the in silico pipeline to design novel compounds (n = 260) as leads using the standard drug scaffolds with improved PK/PD properties from the standard scaffolds. As a result, the best candidates (n = 3) were evaluated in molecular docking to interact with serotonin and dopamine receptors. Finally, haloperidol (HAL) derivative (1-(4-fluorophenyl)-4-(4-hydroxy-4-{4-[(2-phenyl-1,3-thiazol-4-yl)methyl]phenyl}piperidin-1-yl)butan-1-one) was identified as a "magic shotgun" lead compound with better affinity to the 5-HT2A, 5-HT1D, D2, D3, and 5-HT1B receptors than the control molecule. Additionally, this hit substance was predicted to possess similar BBB permeation properties and much lower toxicological profiles in comparison to HAL. Overall, the proposed rational drug design platform for novel antipsychotic drugs based on the BBB permeation and receptor binding might be an invaluable asset for a medicinal chemist or translational pharmacologist.Communicated by Ramaswamy H. Sarma.

End-of-life and hospice care for neurologic illness

Systems for end of life care around the world vary in availability, structure, and funding. When available, most end of life care is in the hospice model with an interdisciplinary team approach to care of people who are expected to die within months and whose primary goal is to maximize quality of life. Symptom management near the end of life is guided by prognosis and individual priorities. People dying with neurologic disease are likely to have impaired communication or mobility that adds to the complexity of prognostication and symptom management. Neurologic specialists have important roles to play in end of life care due to their unique understanding of disease prognosis as well as end of life symptom burden and management. Neurologic specialists need to become strong advocates for the importance of end of life care by being actively involved in the hospice movement and by addressing current disparities in access to care.

Incidence and drug treatment of emotional distress after cancer diagnosis: a matched primary care case-control study

BACKGROUND

Emotional distress is common in cancer patients. This study aimed to describe, in the year after a cancer diagnosis: the incidence of anxiety, depression and excessive alcohol use; the pattern of these diagnoses and treatment over time; and the nature and duration of the prescribed treatment.

METHODS

A matched case-control study was conducted using routinely collected primary care data from 173 Scottish general practices. A presumptive diagnosis of emotional distress (anxiety, depression and/or excessive alcohol use) was based on prescription data or diagnostic code. Prescriptions for psychotropic drugs were described in terms of drug class, volume and treatment duration.

RESULTS

In total, 7298 cancer cases and 14 596 matched-controls were identified. Overall, 1135 (15.6%) cases and 201 (1.4%) controls met criteria for emotional distress (odds ratio 13.7, 95% confidence interval 11.6-16.1). Psychotropic drugs were prescribed in the 6 months following initial cancer diagnosis for 1066 (14.6%) cases and 161 (1.1%) controls. The volume and duration of anxiolytic and antipsychotic prescribing was significantly different between cases and controls.

CONCLUSION

This study quantified the higher incidence of new emotional distress in cancer patients in the first year post diagnosis. Clinicians should be aware of the possibility of emotional distress at any time in the year after cancer diagnosis.