Depression and Long-Term Prescription Opioid Use and Opioid Use Disorder: Implications for Pain Management in Cancer

Long-term opioid prescribing and healthcare encounters in metastatic cancer: observational population study

BACKGROUND

Although opioids are effective for cancer pain management, long-term use may result in adverse effects which are understudied among patients with metastatic disease.

OBJECTIVES

To describe long-term opioid prescribing among patients with metastatic cancer and investigate how long-term prescribing practices are associated with the incidence of opioid-related hospitalisations and emergency department visits.

METHODS

This retrospective cohort study included all opioid-naïve patients diagnosed with solid metastatic cancer in Alberta, Canada from 2004 to 2017 who had ≥1 year of follow-up. Patients were identified and followed using linked administrative health data. Long-term prescribing was defined as receiving a ≥90-day supply of opioids with a <30-day gap in supply within a 180-day period. The incidence rate of opioid-related healthcare encounters was compared based on characteristics of long-term prescribing (timing, dosage, duration and concurrent medications).

RESULTS

The study included 10 927 patients, 2521 (23%) of whom received long-term opioid prescribing. These practices became more common near the end of life, with 53% of cases initiated during patients' last year of life. Opioid-related healthcare encounters were experienced by 85 (3.4%) recipients of long-term prescribing. Higher dosage (p<0.001) and concurrent prescribing of anxiolytics (p=0.001), benzodiazepines (p=0.001), antidepressants (p=0.027) and neuroleptics (p<0.001) were associated with a higher incidence of opioid-related healthcare encounters.

CONCLUSIONS

Long-term opioid prescribing is common, and patients receiving long-term prescriptions with high dosage or concurrent psychoactive medications may benefit from interventions aimed at reducing opioid-related adverse effects. Further research is needed to determine strategies to minimise opioid-related harms for these patients while providing appropriate pain and symptom management.

Depression, non-medical pain prescriptions, and suicidal behavior in cancer survivors

PURPOSE

A cancer diagnosis results in significant distress and adverse psychosocial sequelae, including suicide, the 10th leading cause of death in the USA. Primary risks for death by suicide include depression and opioid abuse, which are prevalent among cancer survivors. Yet, it remains unclear whether they are also associated with other suicidal outcomes, such as ideation, planning, and suicidal attempt.

METHODS

We used cross-sectional data from the National Survey on Drug Use and Health (2015-2019, N = 214,271), a nationwide study in the USA that provides data on mental health and other health concerns. Outcome of interest was suicidality (suicidal ideation, planning, and attempt). Main exposures were history of depression and non-medical use of pain prescriptions. Using weighted logistic regression analyses adjusted for sociodemographic factors and substance use, we estimated odds of suicidal ideation, planning, and attempt.

RESULTS

There were 7635 cancer survivors in our study, which was our analytic sample. We found an associations between a history of cancer and suicidal ideation (aOR = 1.32, 95% CI 1.10, 1.58). Among cancer survivors, depression and non-medical use of pain prescriptions were consistently associated with suicidal ideation (aORdepression = 7.37, 95% CI 4.52, 12.03; aORpain prescriptions = 3.36, 95% CI 1.27, 8.91, planning (aORdepression = 10.31, 95% CI 5.79, 18.34; and aORpain prescriptions = 3.77, 95% CI 1.20, 11.85), and attempt (aORdepression = 4.29, 95% CI 1.41, 13.06).

CONCLUSION

Both depression and non-medical pain prescriptions are independently associated with increased odds of suicidal behavior among cancer survivors. Routinely assessing for depression and history of non-medical use of pain prescriptions could be an important suicide prevention strategy in oncology.

IMPLICATIONS FOR CANCER SURVIVORS

Given the increased risk of suicide mortality among cancer survivors, it is critical that risk factors for suicidal behavior, such as depression and use of non-medical pain prescriptions, are routinely screened for as part of cancer care.

The contribution of nonmedical opioid use to healthcare encounters for opioid overdose and use disorders among long-term users with metastatic cancer

PURPOSE

Opioid misuse is increasingly recognized as a relevant problem among patients with cancer. However, the applicability of these concerns for patients with metastatic disease is complicated by shorter prognoses and greater symptom burden. This study aimed to investigate whether nonmedical opioid use (NMOU) was identified as contributing to opioid-related healthcare encounters among patients with metastatic cancer receiving long-term prescribing.

METHODS

The study included patients with stage IV cancer diagnosed from 2004-2017 in Alberta, Canada who 1) received long-term opioid prescribing and 2) experienced ≥ 1 hospitalization or emergency department visit relating to opioid overdose or use disorder. Records from visits to cancer centres and opioid-related hospital encounters were reviewed to identify any documentation of NMOU. Patient characteristics were compared between those with and without documented NMOU.

RESULTS

Charts of 46 patients were reviewed. Although NMOU contributed to opioid-related encounters, these events were often related to poorly controlled pain, declining functional status, and disease progression. NMOU behaviors were documented for 16 (35%) patients. The most common NMOU behaviour was overuse of prescribed medications, which was documented for 12 patients. For 7 patients, there were indications of use of opioids for psychological coping, including 3 encounters caused by intentional overdoses with suicidal intent. Patients with NMOU were significantly more likely to have a history of substance use and limited social support.

CONCLUSION

Approximately 1-in-3 patients experiencing opioid-related hospitalizations/emergency department visits had indications of NMOU. Further psychosocial care and interdisciplinary pain management are warranted to improve safe prescribing for these patients.

Top Ten Tips Palliative Care Clinicians Should Know About the Psychiatric Manifestations of Nonpsychiatric Serious Illness and Treatments

Mental health issues are widespread and significant among individuals with serious illness. Among patients receiving palliative care (PC), psychiatric comorbidities are common and impact patient quality of life. Despite their prevalence, PC clinicians face challenges in effectively addressing the intricate relationship between medical and psychiatric disorders due to their complex, intertwined and bidirectionally influential nature. This article, created collaboratively with a team of psychiatric-palliative care experts, is the second in a two-part series examining the bidirectional relationship between medical and psychiatric illness in PC. This article explores 10 prevalent psychiatric manifestations associated with severe illness and its treatment. Building upon the first article, which focused on 10 common physical manifestations of psychiatric illness among patients receiving PC, these two articles advocate for an integrated approach to PC that prioritizes mental and emotional wellbeing across the continuum of serious illness.

Music therapy in hemodialysis patients: Systematic review and meta-analysis

BACKGROUND

Patients undergoing hemodialysis (HD) face significant challenges; however, non-pharmaceutical interventions hold potential for enhancing their quality of life. This paper evaluates the effects of music therapy on various mental and physiological outcomes in patients undergoing HD.

METHODS

This systematic review and meta-analysis followed the PRISMA 2020 guidelines. A comprehensive database search conducted up to May 21, 2024, identified studies for inclusion based on PICOS criteria. The methodological quality of these studies was assessed using the Cochrane risk-of-bias tool and Review Manager 5.4. For the meta-analysis, R and Stata/SE 15.1 were used, applying a random-effects model in cases of significant heterogeneity, and a fixed-effects model when heterogeneity was minimal.

RESULTS

Twenty-four studies involving 1703 participants were analyzed. Music therapy significantly decreased anxiety (SMD: -0.72, 95 % CI: -0.97 to -0.46, I²: 83 %), pain (SMD: -1.22, 95 % CI: -1.68 to -0.75, I²: 93 %), depression (SMD: -0.85, 95 % CI: -1.31 to -0.39, I²: 77 %), stress (SMD: -0.93, 95 % CI: -1.17 to -0.68, I²: 41 %), and adverse reactions associated with HD (SMD: -0.67, 95 % CI: -0.88 to -0.46, I²: 0 %), all showing strong effect sizes (p < 0.001 for all). However, no significant changes were observed in sleep quality, fatigue, satisfaction with HD, systolic or diastolic blood pressure, heart rate, or finger temperature. A slight reduction in respiration rate (p = 0.0072) and an increase in oxygen saturation (p = 0.0056) were noted. While music therapy showed promising results, the notable heterogeneity in pain and anxiety outcomes suggests careful interpretation, although no significant publication bias was detected.

CONCLUSION

Music therapy has demonstrated encouraging outcomes in improving the well-being of patients undergoing HD, particularly in reducing anxiety, pain, and stress. However, due to notable heterogeneity and methodological issues such as small sample sizes and inconsistent blinding, further high-quality research is needed to confirm these findings and establish more robust evidence.

The Efficacy of Ketamine for Acute and Chronic Pain in Patients with Cancer: A Systematic Review of Randomized Controlled Trials

Managing cancer-related pain poses significant challenges, prompting research into alternative approaches such as ketamine. This systematic review aims to analyze and summarize the impact of ketamine as an adjuvant to opioid therapy for cancer-related pain. We conducted a literature review in MEDLINE, EMBASE, and Scopus from 1 January 1982 to 20 October 2023. Abstracts were screened against inclusion criteria, and eligible studies underwent a full-text review. Data was extracted from the included studies, and a framework analysis approach summarized the evidence regarding ketamine's use in patients with cancer. A total of 21 randomized clinical trials were included, and the quality of all the included studies was good or fair. Significant improvements in pain scores and reduced morphine consumption were consistently observed with intravenous ketamine administration for postoperative pain control, particularly when combined with other analgesics such as morphine. Ketamine was less effective when used as an analgesic for chronic pain management, with several studies on neuropathic pain or chemotherapy-induced neuropathy finding minimal significant effect on reduction of pain scores or morphine requirements. The efficacy of ketamine in pain management appears to depend on factors such as dosage, route of administration, and patient population.

From Perspective of Hippocampal Plasticity: Function of Antidepressant Chinese Medicine Xiaoyaosan

The hippocampus is one of the most commonly studied brain regions in the context of depression. The volume of the hippocampus is significantly reduced in patients with depression, which severely disrupts hippocampal neuroplasticity. However, antidepressant therapies that target hippocampal neuroplasticity have not been identified as yet. Chinese medicine (CM) can slow the progression of depression, potentially by modulating hippocampal neuroplasticity. Xiaoyaosan (XYS) is a CM formula that has been clinically used for the treatment of depression. It is known to protect Gan (Liver) and Pi (Spleen) function, and may exert its antidepressant effects by regulating hippocampal neuroplasticity. In this review, we have summarized the association between depression and aberrant hippocampal neuroplasticity. Furthermore, we have discussed the researches published in the last 30 years on the effects of XYS on hippocampal neuroplasticity in order to elucidate the possible mechanisms underlying its therapeutic action against depression. The results of this review can aid future research on XYS for the treatment of depression.

The Impact of Chronic Diseases on Mental Health: An Overview and Recommendations for Care Programs

PURPOSE OF REVIEW

The current achievement of medical advancement is noteworthy; however, the occurrence of chronic diseases is increasing day by day, with a significant percentage of affected people are suffering from a mental health crisis. This article aims to present a thorough yet brief review of methods that can be employed to build the emotional wellness of chronic patients.

RECENT FINDINGS

The mental health care strategies include resilience-building, coping skills training, professional counseling, and lifestyle adaptations. Additionally, the article highlights the efficacy of several modern interventions, such as mindfulness-based therapies, cognitive behavioral therapy, eye movement desensitization, and recovery from stress therapy. The global burden of chronic illness emphasizes the pressing need to mitigate mental health problems among chronic patients. By providing actionable insights, our study clears the path for targeted interventions and holistic approaches for chronic disease patients. Moreover, the article suggests to policymakers and clinicians the need for collaboration and multifaceted interventions.

Investigating the association of opioid prescription with the incidence of psychiatric disorders: nationwide cohort study in South Korea

BACKGROUND

The relationship between opioid use and the incidence of psychiatric disorders remains unidentified.

AIMS

This study examined the association between the incidence of psychiatric disorders and opioid use.

METHOD

Data for this population-based cohort study were obtained from the National Health Insurance Service of South Korea. The study included all adult patients who received opioids in 2016. The control group comprised individuals who did not receive opioids in 2016, and were selected using a 1:1 stratified random sampling procedure. Patients with a history of psychiatric disorders diagnosed in 2016 were excluded. The primary end-point was the diagnosis of psychiatric disorders, evaluated from 1 January 2017 to 31 December 2021. Psychiatric disorders included schizophrenia, mood disorders, anxiety and others.

RESULTS

The analysis included 3 505 982 participants. Opioids were prescribed to 1 455 829 (41.5%) of these participants in 2016. Specifically, 1 187 453 (33.9%) individuals received opioids for 1-89 days, whereas 268 376 (7.7%) received opioids for ≥90 days. In the multivariable Cox regression model, those who received opioids had a 13% higher incidence of psychiatric disorder than those who did not (hazard ratio 1.13; 95% CI 1.13-1.14). Furthermore, both those prescribed opioids for 1-89 days and for ≥90 days had 13% (hazard ratio 1.13, 95% CI 1.12-1.14) and 17% (hazard ratio 1.17, 95% CI 1.16-1.18) higher incidences of psychiatric disorders, respectively, compared with those who did not receive opioids.

CONCLUSIONS

This study revealed that increased psychiatric disorders were associated with opioid medication use. The association was significant among both short- and long-term opioid use.

Efficacy and Safety of Ketamine to Treat Cancer Pain in Adult Patients: A Systematic Review

CONTEXT

Ketamine is a well-characterized anesthetic agent, and subanesthetic ketamine possesses analgesic effects in both acute and chronic pain.

OBJECTIVES

A systematic review was performed to ascertain the efficacy and safety of ketamine in treating pain for cancer patients.

METHODS

Eight databases were searched from the inception to March 20th, 2023 to obtain randomized controlled trials (RCTs) on ketamine for treating pain in cancer patients. Two reviewers independently screened studies, extracted the data and assessed the risk of bias of included studies; then, meta-analysis was performed by using Revman 5.3 software and Stata 14.0 software.

RESULTS

Thirty-five studies were included, involving 2279 patients with cancer pain. The results of meta-analysis showed that ketamine could significantly reduce pain intensity. Subgroup analysis revealed that, when compared with control group, ketamine decreased markedly visual analogue scale (VAS) scores in two days after the end of treatment with ketamine, and ketamine administrated by patient controlled epidural analgesia (PCEA) was effective. Meanwhile, ketamine could significantly reduce the number of patient-controlled analgesia (PCA) compressions within 24 hours and morphine dosage. Ketamine could not decrease Ramsay sedation score. Additionally, the adverse events significantly decreased in the ketamine group, including nausea and vomiting, constipation, pruritus, lethargy, uroschesis, hallucination, and respiratory depression. In addition, compared with the control group, ketamine could reduce Hamilton depression scale (HAMD) score and relieve depressive symptoms.

CONCLUSION

Ketamine may be used as an effective therapy to relieve cancer pain. However, more rigorously designed RCTs with larger sample sizes are required to verify the above conclusions.

Molecular mechanisms of cholinergic neurotransmission in visceral smooth muscles with a focus on receptor-operated TRPC4 channel and impairment of gastrointestinal motility by general anaesthetics and anxiolytics

Acetylcholine is the primary excitatory neurotransmitter in visceral smooth muscles, wherein it binds to and activates two muscarinic receptors subtypes, M2 and M3, thus causing smooth muscle excitation and contraction. The first part of this review focuses on the types of cells involved in cholinergic neurotransmission and on the molecular mechanisms underlying acetylcholine-induced membrane depolarisation, which is the central event of excitation-contraction coupling causing Ca2+ entry via L-type Ca2+ channels and smooth muscle contraction. Studies of the muscarinic cation current in intestinal myocytes (mICAT) revealed its main molecular counterpart, receptor-operated TRPC4 channel, which is activated in synergy by both M2 and M3 receptors. M3 receptors activation is of permissive nature, while activation of M2 receptors via Gi/o proteins that are coupled to them plays a direct role in TRPC4 opening. Our understanding of signalling pathways underlying mICAT generation has vastly expanded in recent years through studies of TRPC4 gating in native cells and its regulation in heterologous cells. Recent studies using muscarinic receptor knockout have established that at low agonist concentration activation of both M2 receptor and the M2/M3 receptor complex elicits smooth muscle contraction, while at high agonist concentration M3 receptor function becomes dominant. Based on this knowledge, in the second part of this review we discuss the cellular and molecular mechanisms underlying the numerous anticholinergic effects on neuroactive drugs, in particular general anaesthetics and anxiolytics, which can significantly impair gastrointestinal motility. This article is part of the Special Issue on "Ukrainian Neuroscience".

Patients with Chronic Pain: Are Mindfulness Traits Protective Against Distress, Anxiety and Depression?

OBJECTIVE

To investigate mindfulness traits/attitudes as protective factors against chronic pain related distress, depression and anxiety.

METHOD

Fifty patients (25 with chronic non-oncologic pain-NOP; 25 with chronic oncologic pain-COP) were administered with the following scales: Visual Analogue Scale (VAS), Pain Disability Index (PDI), Italian Questionnaire for Pain (QUID), Perceived Stress Scale (PSS), State and Trait Anxiety Scale (STAY-y1 module), Beck Depression Inventory II (BDI-II), Pittsburgh Sleep Quality Index (PSQI), Psychological General Well Being Index (PGWBI), Mindful Attention Awareness Scale (MAAS).

RESULTS

MAAS value ≥ 4.38 was adopted as cut-off to compare 'high level of mindfulness' (HM) vs. 'normal level of mindfulness' (NM) attitudes. Twenty-six patients (52%) scored ≥4.38, with no different distribution between NOP and COP. HM patients scored significantly lower than NM patients on PDI 'family/home responsibilities' domain (4.5±3.2 vs. 6.4±2.8; p<.037), and on PSS (17.8±2.6 vs. 20.9±2.5; p<.0001), STAY-y1 (9.4±1.8 vs. 10.3±2.1; p<.0001), BDI-II (7.8±5.0 vs. 17.6±8.6; p<.0001) total scores. HM scored significantly higher than NM patients in all PGWBI domains. A multiple regression analysis was carried out to analyze the predictor variables of PGWB. The most complete model considered the variables MAAS, STAIy and VAS (F=42.21; p<.0001), that accounted for the 71.6% of PGWB variance. MAAS score was the only variable positively predicting for PGWB; STAIy and VAS scores predicted negatively.

CONCLUSIONS

Chronic pain patients with high levels of mindfulness attitudes experienced less distress, anxiety, depressive symptoms, and more physical and general wellbeing than patients with low levels of mindfulness attitudes.

Nanomaterial-Based Drug Delivery Systems for Pain Treatment and Relief: From the Delivery of a Single Drug to Co-Delivery of Multiple Therapeutics

The use of nanomaterials in drug delivery systems for pain treatment is becoming increasingly common. This review aims to summarize how nanomaterial-based drug delivery systems can be used to effectively treat and relieve pain, whether via the delivery of a single drug or a combination of multiple therapeutics. By utilizing nanoformulations, the solubility of analgesics can be increased. Meanwhile, controlled drug release and targeted delivery can be realized. These not only improve the pharmacokinetics and biodistribution of analgesics but also lead to improved pain relief effects with fewer side effects. Additionally, combination therapy is frequently applied to anesthesia and analgesia. The co-encapsulation of multiple therapeutics into a single nanoformulation for drug co-delivery has garnered significant interest. Numerous approaches using nanoformulation-based combination therapy have been developed and evaluated for pain management. These methods offer prolonged analgesic effects and reduced administration frequency by harnessing the synergy and co-action of multiple targets. However, it is important to note that these nanomaterial-based pain treatment methods are still in the exploratory stage and require further research to be effectively translated into clinical practice.

Cancer Pain Management: A Narrative Review of Current Concepts, Strategies, and Techniques

Pain is frequently reported during cancer disease, and it still remains poorly controlled in 40% of patients. Recent developments in oncology have helped to better control pain. Targeted treatments may cure cancer disease and significantly increase survival. Therefore, a novel population of patients (cancer survivors) has emerged, also enduring chronic pain (27.6% moderate to severe pain). The present review discusses the different options currently available to manage pain in (former) cancer patients in light of progress made in the last decade. Major progress in the field includes the recent development of a chronic cancer pain taxonomy now included in the International Classification of Diseases (ICD-11) and the update of the WHO analgesic ladder. Until recently, cancer pain management has mostly relied on pharmacotherapy, with opioids being considered as the mainstay. The opioids crisis has prompted the reassessment of opioids use in cancer patients and survivors. This review focuses on the current utilization of opioids, the neuropathic pain component often neglected, and the techniques and non-pharmacological strategies available which help to personalize patient treatment. Cancer pain management is now closer to the management of chronic non-cancer pain, i.e., "an integrative and supportive pain care" aiming to improve patient's quality of life.

Is depression the missing link between inflammatory mediators and cancer?

Patients with cancer are at greater risk of developing depression in comparison to the general population and this is associated with serious adverse effects, such as poorer quality of life, worse prognosis and higher mortality. Although the relationship between depression and cancer is now well established, a common underlying pathophysiological mechanism between the two conditions is yet to be elucidated. Existing theories of depression, based on monoamine neurotransmitter system dysfunction, are insufficient as explanations of the disorder. Recent advances have implicated neuroinflammatory mechanisms in the etiology of depression and it has been demonstrated that inflammation at a peripheral level may be mirrored centrally in astrocytes and microglia serving to promote chronic levels of inflammation in the brain. Three major routes to depression in cancer in which proinflammatory mediators are implicated, seem likely. Activation of the kynurenine pathway involving cytokines, increases tryptophan catabolism, resulting in diminished levels of serotonin which is widely acknowledged as being the hallmark of depression. It also results in neurotoxic effects on brain regions thought to be involved in the evolution of major depression. Proinflammatory mediators also play a crucial role in impairing regulatory glucocorticoid mediated feedback of the hypothalamic-pituitary-adrenal axis, which is activated by stress and considered to be involved in both depression and cancer. The third route is via the glutamatergic pathway, whereby glutamate excitotoxicity may lead to depression associated with cancer. A better understanding of the mechanisms underlying these dysregulated and other newly emerging pathways may provide a rationale for therapeutic targeting, serving to improve the care of cancer patients.