Palliation and liver failure: palliative medications dosage guidelines

Curcumin and analogues in mitigating liver injury and disease consequences: From molecular mechanisms to clinical perspectives

BACKGROUND

Liver injury is a prevalent global health concern, impacting a substantial number of individuals and leading to elevated mortality rates and socioeconomic burdens. Traditional primary treatment options encounter resource constraints and high costs, prompting exploration of alternative adjunct therapies, such as phytotherapy. Curcumin demonstrates significant therapeutic potential across various medical conditions, particularly emerging as a promising candidate for liver injury treatment.

PURPOSE

This study aims to provide current evidence maps of curcumin and its analogs in the context of liver injury, covering aspects of biosafety, toxicology, and clinical trials. Importantly, it seeks to summarize the intricate mechanisms modulated by curcumin.

METHODS

We conducted a comprehensive search of MEDLINE, Web of Science, and Embase up to July 2023. Titles and abstracts were reviewed to identify studies that met our eligibility criteria. The screening process involved three authors independently assessing the potential of curcumin mitigating liver injury and its disease consequences by reviewing titles, abstracts, and full texts.

RESULTS

Curcumin and its analogs have demonstrated low toxicity in vitro and in vivo. However, the limited bioavailability has hindered their advanced use in liver injury. This limitation can potentially be addressed by nano-curcumin and emerging drug delivery systems. Curcumin plays a role in alleviating liver injury by modulating the antioxidant system, as well as cellular and molecular pathways. The specific mechanisms involve multiple pathways, such as NF-κB, p38/MAPK, and JAK2/STAT3, and the pro-apoptosis Bcl-2/Bax/caspase-3 axis in damaged cells. Additionally, curcumin targets nutritional metabolism, regulating the substance in liver cells and tissues. The microenvironment associated with liver injury, like extracellular matrix and immune cells and factors, is also regulated by curcumin. Initial evaluation of curcumin and its analogs through 12 clinical trials demonstrates their potential application in liver injury.

CONCLUSION

Curcumin emerges as a promising phytomedicine for liver injury owing to its effectiveness in hepatoprotection and low toxicity profile. Nevertheless, in-depth investigations are warranted to unravel the complex mechanisms through which curcumin influences liver tissues and overall physiological milieu. Moreover, extensive clinical trials are essential to determine optimal curcumin dosage forms, maximizing its benefits and achieving favorable clinical outcomes.

Hospital Opioid Usage and Adverse Events in Patients With End-Stage Liver Disease

CONTEXT

Patients with end-stage liver disease (ESLD) commonly experience pain and other symptoms that result in a poor quality of life. Few studies have examined opioid usage, adverse events (AEs), and other outcomes in ESLD patients receiving opioid analgesia.

OBJECTIVES

This study aimed to compare outcomes in ESLD patients who received opioids to those who did not and to determine risk factors for AEs.

METHODS

This was a retrospective case-cohort study of 270 hospitalized patients with ESLD that used administrative and clinical data from the electronic medical record.

RESULTS

Two-thirds of patients with ESLD admitted during the study period received at least one opioid analgesic. Patients who received opioids presented with a greater number of liver related complications and higher rates of anxiety (32% vs. 17%, P= 0.007), had substantially worse initial and average pain scores (both P< 0.001), and received more palliative care consultations. The opioid group had somewhat more respiratory (22.2% vs. 11.1%, P= 0.02) and gastrointestinal (38.5% vs. 25.2%, P= 0.03) AEs, but no increase in CNS adverse events which included hepatic encephalopathy. Anxiety and disease severity (i.e., the number of liver related complications) but not opioid administration were risk factors for the number of AEs.

CONCLUSION

Opioid administration was not an independent risk factor for the number of AEs in hospitalized patients with ESLD, whereas anxiety and more liver-related complications increased AE risk. Our findings suggest that opioids have an appropriate and reasonably safe role in alleviation of pain in patients with ESLD.

Hepatic impairment as a risk factor of adverse drug reactions

There are a lot of clinical variants of hepatic impairment ranging from asymptomatic increase in transaminases to acute liver failure and fulminant hepatitis. Hepatic impairment is a polietiologic syndrome. According to the epidemiological study conducted in the United States (19982008), the main causes of hepatic impairment were paracetamol overdose (46%), idiopathic liver dysfunction (14%), other drugs (excluding paracetamol, 11%), viral hepatitis B (7%), other infectious and non-infectious diseases with liver damage (except for viral hepatitis) 7%, autoimmune hepatitis (5%), ischemic hepatitis (syn. hypoxic hepatitis, liver infarction) 4%, viral hepatitis A (3%) and Wilson's disease (2%). Hepatic impairment have a direct impact on the pharmacokinetics and pharmacodynamics of drugs decreasing clearance, elimination and excretion of drugs. Also Transjugular intrahepatic porto-systemic shunts, which are often used to treat portal hypertension in patients with liver cirrhosis, can significantly reduce the presystemic elimination of drugs, thereby increasing their absorption. Moreover, in patients with liver cirrhosis, concomitant renal dysfunction also requires an adjustment of the dose of drugs. Correction of pharmacotherapy in accordance to pharmacokinetic and pharmacodynamic changes of drugs ingested by patients with impaired liver function will improve the quality of medical care and reduce the risks of adverse drug reactions.

Pain and Self-Care Behaviours in Adult Patients with End-Stage Liver Disease: A Longitudinal Description

This prospective descriptive study investigated pain characteristics in 20 outpatients with end-stage liver disease (ESLD) who were approaching the end of life, described variability in pain between and within patients, and described the pharmacological and nonpharmacological pain management strategies used. The instruments we utilized were the Brief Pain Inventory (BPI) and the self-care behaviour (SCB) log for pain. Data were collected once a month over a six-month period. BPI severity of, and interference from pain mean scores ranged from 5.52 to 6.03 and 5.36 to 6.64, respectively. The top three pain-relieving behaviours reported by patients were “taking pain medication,” “taking a nap,” and “asking for help.” Pain medication intake differed between patients who were pursuing a liver transplant and those who were not eligible for one. If we are to effectively improve care for ESLD patients, it is essential that we understand the ways in which these patients experience pain and the pain management strategies they employ.

A Survey of Knowledge and Attitudes of Nurses About Pain Management in End-Stage Liver Disease in a Geriatric Palliative Care Unit

BACKGROUND

Palliative care is often initiated late for patients with end stage liver disease (ESLD) with pain being a common morbidity that is under-treated throughout the disease trajectory. When admitted to a palliative care unit (PCU), nurses play a pivotal role and must be highly informed to ensure effective pain management. The aim of this study is to determine the baseline level of knowledge and attitudes of PCU nurses regarding pain management in patients with ESLD.

METHODS

A descriptive, cross-sectional self-administered survey design was used for this study. The sample comprised 35 PCU nurses working at a continuing chronic care facility in Toronto, Ontario, Canada. Data on the knowledge and attitudes of the nurses regarding pain management in patients with ESLD, was obtained using a modified version of the "Nurses Knowledge and Attitudes Survey Regarding Pain" (NKASRP) tool.

RESULTS

Thirty-one PCU nurses were included for the analysis, giving a response rate of 89%. The mean total percentage score for the nurses on the modified version of the NKASRP was 72%. Only 26% of the nurse participants obtained a passing score of 80% or greater. There were no significant differences in mean total scores by age, gender, years of nursing experience or education level.

CONCLUSIONS

The findings of this study provide important information about the inadequate knowledge and attitude in nurses regarding pain management for patients with ESLD. It is suggested that targeted educational programs and quality improvement initiatives in pain management for patients with ESLD could improve knowledge and attitudes for PCU nurses.

Opioid Drugs in Patients With Liver Disease: A Systematic Review

CONTEXT

The liver, one of the most important organs of the body, is known to be responsible for several functions. The functional contribution of the liver to the metabolism of carbohydrates, protein, drugs and toxins, fats and cholesterol and many other biological processes are still unknown. Liver disorders are classified into two types: acute and chronic. Different drugs are used in liver diseases to treat and control pain. Most pain relief medications such as opioids are metabolized via the liver; therefore, the adverse reactions of drugs are probably higher for patients with liver disease. The current study aimed to evaluate the effects of opioid drugs on patients with liver disease; therefore, it is necessary to select suitable opioids for such patients.

EVIDENCE ACQUISITION

This review was written by referring to research literature including 70 articles and four textbooks published from 1958 to 2015 on various reputable sites. Searches were carried out on the key phrases of narcotic pain relievers (opioids), acute and chronic hepatic failure, opioid adverse drug reactions, drug-induced liver injury (DILI) and other similar keywords. References included a variety of research papers (descriptive and analytical), intervention and review articles.

RESULTS

In patients with liver disease, administration of opioid analgesics should be observed, accurately. As a general rule, lower doses of drugs should be administered at regular intervals based on the signs of drug accumulation. Secondly, the interactions of opioid drugs with different levels of substrates of the P450 cytochrome enzyme should be considered.

CONCLUSIONS

Pain management in patients with liver dysfunction is always challenging to physicians because of the adverse reactions of drugs, especially opioids. Opioids should be used cautiously since they can cause sedation, constipation and sudden encephalopathy effects. Since the clearance of these drugs in patients with hepatic insufficiency is decreased, the initial dose must be decreased, the intervals between doses should be increased and some patients need to be continuously assessed.

Are strong opioids equally effective and safe in the treatment of chronic cancer pain? A multicenter randomized phase IV 'real life' trial on the variability of response to opioids

BACKGROUND

Guidelines tend to consider morphine and morphine-like opioids comparable and interchangeable in the treatment of chronic cancer pain, but individual responses can vary. This study compared the analgesic efficacy, changes of therapy and safety profile over time of four strong opioids given for cancer pain.

PATIENT AND METHODS

In this four-arm multicenter, randomized, comparative, of superiority, phase IV trial, oncological patients with moderate to severe pain requiring WHO step III opioids were randomly assigned to receive oral morphine or oxycodone or transdermal fentanyl or buprenorphine for 28 days. At each visit, pain intensity, modifications of therapy and adverse drug reactions (ADRs) were recorded. The primary efficacy end point was the proportion of nonresponders, meaning patients with worse or unchanged average pain intensity (API) between the first and last visit, measured on a 0-10 numerical rating scale. (NCT01809106).

RESULTS

Forty-four centers participated in the trial and recruited 520 patients. Worst pain intensity and API decreased over 4 weeks with no significant differences between drugs. Nonresponders ranged from 11.5% (morphine) to 14.4% (buprenorphine). Appreciable changes were made in the treatment schedules over time. Each group required increases in the daily dose, from 32.7% (morphine) to 121.2% (transdermal fentanyl). Patients requiring adjuvant analgesics ranged from 68.9% (morphine) to 81.6% (oxycodone), switches varied from 22.1% (morphine) to 12% (oxycodone), discontinuation of treatment from 27% ( morphine) to 14.5% (fentanyl). ADRs were similar except for effects on the nervous system, which significantly prevailed with morphine.

CONCLUSION

The main findings were the similarity in pain control, response rates and main adverse reactions among opioids. Changes in therapy schedules were notable over time. A considerable proportion of patients were nonresponders or poor responders.

CLINICAL TRIAL REGISTRATION

NCT01809106 (https://clinicaltrials.gov/ct2/show/NCT01809106?term=cerp&rank=2).

Integration of palliative care in end-stage liver disease and liver transplantation

BACKGROUND

Patients with end-stage liver disease (ESLD) have a life-limiting illness that causes multiple distressing symptoms and negatively affects quality of life (QOL). This population traditionally has not had much attention within the palliative care community.

DISCUSSION

This article provides an evidence-based review of palliative care issues that patients with ESLD and those awaiting liver transplant face, including approaches to prognosis, symptom management, advance care planning, and end-of-life care.

CONCLUSION

Tremendous opportunity exists to integrate palliative medicine into the care of these patients.

Palliative care for patients with end-stage liver disease

Liver disease results in over four million physician visits and over 750,000 hospitalizations per year in the USA. Those with chronic liver disease frequently progress to cirrhosis, end-stage liver disease (ESLD), and death. Patients with ESLD experience numerous complications, including muscle cramps, confusion (hepatic encephalopathy), protein calorie malnutrition, muscle wasting, fluid overload (ascites, edema), bleeding (esophagogastric variceal hemorrhage), infection (spontaneous bacterial peritonitis), fatigue, anxiety, and depression. Despite significant improvements in palliation of these complications, patients still suffer reduced quality of life and must confront the fact that their disease will often inexorably progress to death. Liver transplantation is a valid option in this setting, increasing the duration of survival and palliating many of the symptoms. However, many patients die waiting for an organ or are not candidates for transplantation due to comorbid illness. Others receive a transplant but succumb to complications of the transplant itself. Patients and families must struggle with simultaneously hoping for a cure while facing a life-threatening illness. Ideally, the combination of palliative care with life-sustaining therapy can maximize the patients' quality and quantity of life. If it becomes clear that life-sustaining therapy is no longer an option, these patients are then already in a system to help them with end-of-life care.