Drug-induced Adverse Events

Oral adverse events following COVID-19 and influenza vaccination in Australia

Thu, 2023-09-21 06:00

Hum Vaccin Immunother. 2023 Aug;19(2):2253589. doi: 10.1080/21645515.2023.2253589. Epub 2023 Sep 21.

ABSTRACT

Vaccine hesitancy, spurred by misinterpretation of Adverse Events (AEs), threatens public health. Despite sporadic reports of oral AEs post-COVID-19 vaccination, systematic analysis is scarce. This study evaluates these AEs using the Australian Database of Adverse Event Notifications (DAEN). A secondary analysis of DAEN data was conducted, with the analysis period commencing from the start of the COVID-19 vaccination rollout in February 2021 and the inception of the influenza vaccine database in 1971, both through until December 2022. The focus of the analysis was on oral AEs related to COVID-19 and influenza vaccines. Reports were extracted according to a predefined schema and then stratified by vaccine type, sex, and age. Oral paresthesia was the most common oral AE after COVID-19 vaccination (75.28 per 10,000 reports), followed by dysgeusia (73.96), swollen tongue (51.55), lip swelling (49.43), taste disorder (27.32), ageusia (25.85), dry mouth (24.75), mouth ulceration (18.97), oral hypoaesthesia (15.60), and oral herpes (12.74). While COVID-19 and influenza vaccines shared most oral AEs, taste-related AEs, dry mouth, and oral herpes were significantly more common after COVID-19 vaccination. mRNA vaccines yielded more oral AEs than other types. Females had higher oral AE incidence. Most oral AEs did not differ significantly between COVID-19 and influenza vaccination. However, specific oral AEs, particularly taste-related, dry mouth, and oral herpes, were more prevalent after COVID-19 vaccination compared with seasonal influenza, especially in females and mRNA vaccine recipients.

PMID:37734344 | DOI:10.1080/21645515.2023.2253589

Categories: Literature Watch

Missing information in US accelerated approval drug labels

Thu, 2023-09-21 06:00

Drug Ther Bull. 2023 Sep 21:dtb-2023-000047. doi: 10.1136/dtb.2023.000047. Online ahead of print.

NO ABSTRACT

PMID:37734922 | DOI:10.1136/dtb.2023.000047

Categories: Literature Watch

Efficacy and Safety of Esaxerenone in Hypertensive Patients with Diabetes Mellitus Undergoing Treatment with Sodium-Glucose Cotransporter 2 Inhibitors (EAGLE-DH)

Thu, 2023-09-21 06:00

Adv Ther. 2023 Sep 21. doi: 10.1007/s12325-023-02633-8. Online ahead of print.

ABSTRACT

INTRODUCTION: The EAGLE-DH study assessed the efficacy and safety of esaxerenone in hypertensive patients with diabetes mellitus receiving sodium-glucose cotransporter 2 (SGLT2) inhibitors.

METHODS: In this multicenter, open-label, prospective, interventional study, esaxerenone was started at 1.25 or 2.5 mg/day and could be gradually increased to 5 mg/day on the basis of blood pressure (BP) and serum potassium levels. Oral hypoglycemic or antihypertensive medications prior to obtaining consent was continued. Data were evaluated in the total population and creatinine-based estimated glomerular filtration rate (eGFR) subcohorts (eGFR ≥ 60 mL/min/1.73 m2 [G1-G2 subcohort] and 30 to < 60 mL/min/1.73 m2 [G3 subcohort]).

RESULTS: In total, 93 patients were evaluated (G1-G2, n = 49; G3, n = 44). Morning home systolic/diastolic BP values (SBP/DBP) were significantly reduced from baseline to week 12 (- 11.8 ± 10.8/- 5.1 ± 6.3 mmHg, both P < 0.001) and week 24 (- 12.9 ± 10.5/- 5.7 ± 6.3 mmHg, both P < 0.001). Similar results were observed in both eGFR subcohorts. The urinary albumin-to-creatinine ratio significantly decreased from baseline to week 24 in the total population (geometric percentage change, - 49.1%, P < 0.001) and in both eGFR subcohorts. The incidences of treatment-emergent adverse events (TEAEs) and drug-related TEAEs were 45.2% and 12.9%, respectively; most were mild or moderate. Serum potassium levels increased over the first 2 weeks of esaxerenone treatment, gradually decreased by week 12, and remained constant to week 24. One patient in the G1-G2 subcohort had serum potassium levels ≥ 5.5 mEq/L. No patients had serum potassium ≥ 6.0 mEq/L.

CONCLUSION: Esaxerenone effectively lowered BP, was safe, and showed renoprotective effects in hypertensive patients with diabetes mellitus receiving treatment with SGLT2 inhibitors. Esaxerenone and SGLT2 inhibitors did not interfere with either drug's efficacy and may reduce the frequency of serum potassium elevations, suggesting they are a compatible combination.

CLINICAL TRIAL REGISTRATION: jRCTs031200273.

PMID:37733211 | DOI:10.1007/s12325-023-02633-8

Categories: Literature Watch

Safety and Efficacy of Oral Nalbuphine on Postoperative Pain in Hemorrhoidectomy Patients: A Randomized, Double-blind, Placebo-controlled, Pivotal Trial

Thu, 2023-09-21 06:00

Clin J Pain. 2023 Sep 19. doi: 10.1097/AJP.0000000000001160. Online ahead of print.

ABSTRACT

OBJECTIVES: Severe postoperative pain requiring opioid treatment has been reported in 20-40% of hemorrhoidectomy patients. Compared to morphine, nalbuphine offers better hemodynamic stability, a lower risk of respiratory depression, and a lower potential for addiction. Nalbuphine was developed from intravenous form into an oral form (PHN131) to alleviate moderate-to-severe pain.

METHODS: A randomized, double-blind, placebo-controlled, multiple-dose, parallel-design trial was conducted to evaluate the safety and efficacy of PHN131 in patients undergoing hemorrhoidectomy. Eligible patients were randomly assigned to receive either PHN131 soft capsules containing nalbuphine hydrochloride 60 mg or placebo capsules. Intramuscular diclofenac was the rescue analgesic. Pain was measured by the area under the curve of mean Visual Analog Scale (VAS) pain intensity scores.

RESULTS: VAS results in patients receiving PHN131 were significantly lower than placebo group scores through 48 hours postoperatively (149.2±75.52 vs. 179.6±65.97; P=0.0301). According to Brief Pain Inventory Short Form scores, the impact of pain on quality of life was significantly smaller for the PHN131 group than for the placebo group. Time to the first use of diclofenac postoperatively was significantly longer in the PHN131 group than in the placebo group. The cumulative dosage of diclofenac in the PHN131 group was only around half of that in the placebo group (P<0.0001). Drug-related adverse events were mild-to-moderate and resolved by treatment end. No drug-related severe adverse events were observed.

DISCUSSION: Our findings demonstrate that PHN131 is effective and well-tolerated in the treatment of moderate-to-severe pain and may provide another option for patients to control their pain.

PMID:37732966 | DOI:10.1097/AJP.0000000000001160

Categories: Literature Watch

Graph generative and adversarial strategy-enhanced node feature learning and self-calibrated pairwise attribute encoding for prediction of drug-related side effects

Thu, 2023-09-21 06:00

Front Pharmacol. 2023 Sep 4;14:1257842. doi: 10.3389/fphar.2023.1257842. eCollection 2023.

ABSTRACT

Background: Inferring drug-related side effects is beneficial for reducing drug development cost and time. Current computational prediction methods have concentrated on graph reasoning over heterogeneous graphs comprising the drug and side effect nodes. However, the various topologies and node attributes within multiple drug-side effect heterogeneous graphs have not been completely exploited. Methods: We proposed a new drug-side effect association prediction method, GGSC, to deeply integrate the diverse topologies and attributes from multiple heterogeneous graphs and the self-calibration attributes of each drug-side effect node pair. First, we created two heterogeneous graphs comprising the drug and side effect nodes and their related similarity and association connections. Since each heterogeneous graph has its specific topology and node attributes, a node feature learning strategy was designed and the learning for each graph was enhanced from a graph generative and adversarial perspective. We constructed a generator based on a graph convolutional autoencoder to encode the topological structure and node attributes from the whole heterogeneous graph and then generate the node features embedding the graph topology. A discriminator based on multilayer perceptron was designed to distinguish the generated topological features from the original ones. We also designed representation-level attention to discriminate the contributions of topological representations from multiple heterogeneous graphs and adaptively fused them. Finally, we constructed a self-calibration module based on convolutional neural networks to guide pairwise attribute learning through the features of the small latent space. Results: The comparison experiment results showed that GGSC had higher prediction performance than several state-of-the-art prediction methods. The ablation experiments demonstrated the effectiveness of topological enhancement learning, representation-level attention, and self-calibrated pairwise attribute learning. In addition, case studies over five drugs demonstrated GGSC's ability in discovering the potential drug-related side effect candidates. Conclusion: We proposed a drug-side effect association prediction method, and the method is beneficial for screening the reliable association candidates for the biologists to discover the actual associations.

PMID:37731739 | PMC:PMC10507253 | DOI:10.3389/fphar.2023.1257842

Categories: Literature Watch

Interprofessional Approach to Fall Risk Screening in Patients Undergoing Radiation Therapy

Wed, 2023-09-20 06:00

Clin J Oncol Nurs. 2023 Sep 15;27(5):565-570. doi: 10.1188/23.CJON.565-570.

ABSTRACT

Patients receiving radiation therapy (RT) for cancer are at greater risk for falls because of age, treatment, pharmacologic side effects, and cognitive or motor deficits. The Timed Up and Go (TUG) Test is a validated, objecti.

PMID:37729459 | DOI:10.1188/23.CJON.565-570

Categories: Literature Watch

Enhancing Oncology Side Effect Management Using a Remote Monitoring System

Wed, 2023-09-20 06:00

Clin J Oncol Nurs. 2023 Sep 15;27(5):491-495. doi: 10.1188/23.CJON.491-495.

ABSTRACT

IV oncology treatments are associated with severe side effects (SEs) that can decrease patients' quality of life and lead to increased hospitalizations. However, improved reporting with remote monitoring systems (RMSs) may.

PMID:37729457 | DOI:10.1188/23.CJON.491-495

Categories: Literature Watch

Triple M Syndrome: Implications for Hematology-Oncology Advanced Practice Providers

Wed, 2023-09-20 06:00

Clin J Oncol Nurs. 2023 Sep 15;27(5):463-467. doi: 10.1188/23.CJON.463-467.

ABSTRACT

During the past decade, immune checkpoint inhibitors (ICIs) have revolutionized the landscape of cancer treatment. ICI-related side effects occur via direct overactivation of the immune system, and patients can experience sym.

PMID:37729456 | DOI:10.1188/23.CJON.463-467

Categories: Literature Watch

Chemotherapy-Induced Taste Alteration

Wed, 2023-09-20 06:00

Clin J Oncol Nurs. 2023 Sep 15;27(5):479-485. doi: 10.1188/23.CJON.479-485.

ABSTRACT

Taste alteration is a common side effect of chemotherapy and can have a direct impact on patients' quality of life. Consistent evaluation of alteration in taste is lacking in clinical practice. The literature strongly suppo.

PMID:37729452 | DOI:10.1188/23.CJON.479-485

Categories: Literature Watch

Migraine headache: When to consider these newer agents

Wed, 2023-09-20 06:00

J Fam Pract. 2023 Sep;72(7):292-303. doi: 10.12788/jfp.0657.

ABSTRACT

These agents are as effective as traditional acute and preventive treatments, cause fewer adverse effects, and can simplify regimens.

PMID:37729144 | DOI:10.12788/jfp.0657

Categories: Literature Watch

Antipsychotic prescribing in adults : what to watch out for ?

Wed, 2023-09-20 06:00

Rev Med Suisse. 2023 Sep 20;19(842):1707-1712. doi: 10.53738/REVMED.2023.19.842.1707.

ABSTRACT

Antipsychotics are known to produce frequent and/or potentially serious adverse effects, including neurological, cardiovascular, metabolic and endocrine effects. The side-effects of antipsychotics vary according to their affinity for different central and peripheral receptors, and individual vulnerabilities. Some of these side-effects are dose-dependent, while others are little or not ; thus, management strategies need to be adapted. Good management of adverse events is important to encourage patients' medication adherence and to reduce the cardiovascular morbidity and mortality of side effects. Good collaboration between psychiatrists and general practitioners or specialists is essential.

PMID:37728265 | DOI:10.53738/REVMED.2023.19.842.1707

Categories: Literature Watch

Algae: A Robust Living Material Against Cancer

Wed, 2023-09-20 06:00

Int J Nanomedicine. 2023 Sep 14;18:5243-5264. doi: 10.2147/IJN.S423412. eCollection 2023.

ABSTRACT

Cancer is the second leading cause of death worldwide. Its incidence has been increasing in recent years, and it is becoming a major threat to human health. Conventional cancer treatment strategies, including surgery, chemotherapy, and radiotherapy, have faced problems such as drug resistance, toxic side effects and unsatisfactory therapeutic efficacy. Therefore, better development and utilization of biomaterials can improve the specificity and efficacy of tumor therapy. Algae, as a novel living material, possesses good biocompatibility. Although some reviews have elucidated several algae-based biomaterials for cancer treatment, the majority of the literature has focused on a limited number of algae. As a result, there is currently a lack of comprehensive reviews on the subject of anticancer algae. This review aims to address this gap by conducting a thorough examination of algal species that show potential for anticancer activity. Furthermore, our review will also elucidate the engineering strategies of algae and discuss the challenges and prospects associated with their implementation.

PMID:37727650 | PMC:PMC10506609 | DOI:10.2147/IJN.S423412

Categories: Literature Watch

Effect of medication therapy management services on medication-burden quality of life in hemodialysis patients

Wed, 2023-09-20 06:00

BMC Nephrol. 2023 Sep 20;24(1):277. doi: 10.1186/s12882-023-03332-w.

ABSTRACT

BACKGROUND: Hemodialysis (HD) patients commonly receive polypharmacy leading to increased likelihood of drug related problems (DRPs) and poor quality of life. Medication Therapy Management (MTM) services discover and resolve DRPs and may specifically improve Medication-burden Quality of life (MBQoL) in HD patients. We aimed to assess the effect of MTM services on DRPs and MBQoL among HD patients.

METHODS: A prospective pre-post study was conducted on 104 patients in an HD unit in Alexandria, Egypt. MBQoL was assessed at baseline and after three months of MTM sessions, using the Arabic, validated version of the Patient Reported Outcomes Measure of Pharmaceutical Therapy (PROMPT) questionnaire. Cohen's d test and multiple linear regression were used to assess the effect size of MTM and the factors affecting MBQoL, respectively. DRPs, adverse events and adherence were also monitored.

RESULTS: MBQoL improved significantly after the implementation of MTM (Cohen's d=0.88, p < 0.01) with the largest effect size in the "medicine information and relation with healthcare providers" domain. DRPs decreased significantly after MTM implementation (11.97 ± 4.65 versus 7.63 ± 3.85 per patient, p<0.001). The mean adverse events per patient were also reduced (9.69 ± 4.12 versus 6.56 ± 3.77, p < 0.001).

CONCLUSION: Applying MTM services presents an opportunity to improve care for HD patients by improving MBQoL, decreasing DRPs and adverse events.

PMID:37730586 | DOI:10.1186/s12882-023-03332-w

Categories: Literature Watch

Incidence, risk factors and outcomes of checkpoint inhibitor-induced liver injury: A 10-year real-world retrospective cohort study

Wed, 2023-09-20 06:00

JHEP Rep. 2023 Jul 18;5(10):100851. doi: 10.1016/j.jhepr.2023.100851. eCollection 2023 Oct.

ABSTRACT

BACKGROUND & AIMS: Checkpoint inhibitors (CPI) account for increasing numbers of drug-induced liver injury (DILI) cases. We aimed to determine the incidence rate and risk factors associated with checkpoint inhibitor-induced liver injury (ChILI).

METHODS: Prescription event monitoring was performed on all melanoma and renal cancer patients who received CPI at a tertiary centre between 2011 and 2021. ChILI cases were identified using the definitions, grading, and causality assessment methods validated for DILI. We assessed risk factors associated with ChILI in CPI-naive patients using multivariable logistic regression model. Consecutive patients with suspected ChILI from two other tertiary centres were adjudicated and combined for case characterisation and outcomes of ChILI.

RESULTS: Out of 432 patients who received CPI over 10 years, ChILI occurred in 38 (8.8%) with an overall incidence rate of 11.5 per 1,000 person-months (95% CI 8.2-15.8). Probability of ChILI was highest in combination therapy (32%) and no new events occurred beyond 135 days of treatment. Risk factor analysis showed that combination therapy, female sex, higher baseline alanine transferase level and lower baseline alkaline phosphatase level were independently associated with higher risk of ChILI. In total, 99 patients were adjudicated to have ChILI from three centres. Although Common Terminology Criteria for Adverse Events classified 20 patients (20.2%) to have 'life-threatening' grade 4 hepatitis, ChILI severity was graded as mild in 45 (45.5%) and moderate in the remaining 54 (54.5%) cases.

CONCLUSIONS: The real-world risk of ChILI is higher than previously reported. Among patients receiving dual CPI, this risk falls markedly after 4.5 months. As Common Terminology Criteria for Adverse Events overestimates its clinical severity, case-definition, evaluation and management of ChILI should be revised to harmonise care.

IMPACT AND IMPLICATIONS: Using prescription event monitoring over a 10-year period, the incidence rate of checkpoint inhibitor induced liver injury (ChILI) based on established case definitions for drug-induced liver injury (DILI) is 11.5 per 1,000 person-months. Formal causality assessment identified an alternative cause in 19% of patients with suspected ChILI highlighting the importance of systematic evaluation by clinicians to minimise unnecessary immunosuppression. Intensity of monitoring in patients receiving combination therapy regime after 4.5 months of therapy can be reduced as the risk of new onset ChILI beyond this point is minimal. Current Common Terminology Criteria for Adverse Events (CTCAE) grading overestimates clinical severity of ChILI and hence contributes to avoidable hospitalisation.

PMID:37727807 | PMC:PMC10505983 | DOI:10.1016/j.jhepr.2023.100851

Categories: Literature Watch

Acquisition of temporal patterns from electronic health records: an application to multimorbid patients

Tue, 2023-09-19 06:00

BMC Med Inform Decis Mak. 2023 Sep 19;23(1):189. doi: 10.1186/s12911-023-02287-0.

ABSTRACT

BACKGROUND: The exponential growth of digital healthcare data is fueling the development of Knowledge Discovery in Databases (KDD). Extracting temporal relationships between medical events is essential to reveal hidden patterns that can help physicians find optimal treatments, diagnose illnesses, detect drug adverse reactions, and more. This paper presents an approach for the extraction of patient evolution patterns from electronic health records written in Catalan and/or Spanish.

METHODS: We propose a robust formulation for extracting Temporal Association Rules (TARs) that goes beyond simple rule extraction by considering the sequence of multiple visits. Our highly configurable algorithm leverages this formulation to extract Temporal Association Rules from sequences of medical instances. We can generate rules in the desired format, content, and temporal factors while accounting for different levels of abstraction of medical instances. To demonstrate the effectiveness of our methodology, we applied it to extract patient evolution patterns from clinical histories of multimorbid patients suffering from heart disease and stroke who visited Primary Care Centers (CAP) in Catalonia. Our main objective is to uncover complex rules with multiple temporal steps, that comprise a set of medical instances.

RESULTS: As we are working with real-world, error-prone data, we propose a process of validation of the results by expert practitioners in primary care. Despite our limited dataset, the high percentage of patterns deemed correct and relevant by the experts is promising. The insights gained from these patterns can inform preventive measures and help detect risk factors, ultimately leading to better treatments and outcomes for patients.

CONCLUSION: Our algorithm successfully extracted a set of meaningful and relevant temporal patterns, especially for the specific type of multimorbid patients considered. These patterns were evaluated by experts and demonstrated the ability to predict risk factors that are commonly associated with certain diseases. Moreover, the average time gap between the occurrence of medical events provided critical insight into the term of these risk factors. This information holds significant value in the context of primary healthcare and preventive medicine, highlighting the potential of our method to serve as a valuable medical tool.

PMID:37726756 | PMC:PMC10510308 | DOI:10.1186/s12911-023-02287-0

Categories: Literature Watch

The mental health impact of the COVID-19 pandemic on older adults: a systematic review and meta-analysis

Tue, 2023-09-19 06:00

Age Ageing. 2023 Sep 1;52(9):afad170. doi: 10.1093/ageing/afad170.

ABSTRACT

BACKGROUND: Early in the COVID-19 pandemic, many experts pointed to potential adverse mental health effects for older adults. By contrast, many studies in young to middle-aged adults found older age to be associated with reduced mental burden. However, a systematic review on older adults is missing.

OBJECTIVES: To comprehensively assess the pandemic's mental health impact on older adults.

DATA SOURCES: We searched nine databases from December 2019 to April 2022.

STUDY SELECTION: We included longitudinal and repeated cross-sectional studies assessing pre- and/or peri-pandemic mental distress and/or positive mental health indicators (e.g. wellbeing) on at least two occasions.

DATA SYNTHESIS: We identified 108 studies comprising 102,136 participants (≥60 years). After removal of outliers, there was a small increase in mental distress from pre-to-peri-pandemic assessments, standardised mean difference (SMD) = 0.10, 95% confidence interval (CI) [0.01, 0.18]. Furthermore, a small peri-pandemic decrease in anxiety symptoms was observed, whereas other symptoms remained unchanged. For positive mental health indicators, wellbeing and quality of life showed an initial decrease, whereas overall positive mental health increased during the pandemic, SMD = 0.08, 95% CI [0.01, 0.15]. Being female was related to larger peri-pandemic increases in mental distress.

CONCLUSIONS: Based on many studies, this review demonstrated small decreases in mental health during early stages of the pandemic in older adults, with evidence for later recovery. These findings are similar to those for younger adults and correct earlier claims that older adults are at particular risk for negative mental health consequences. The results ask for further research into resilience and adaptation processes in older adults.

PMID:37725975 | DOI:10.1093/ageing/afad170

Categories: Literature Watch

Delirium in Older Persons: Prevention, Evaluation, and Management

Tue, 2023-09-19 06:00

Am Fam Physician. 2023 Sep;108(3):278-287.

ABSTRACT

Delirium is an acute disturbance in attention, cognition, and awareness that fluctuates over time. Delirium is characterized by three subtypes: hyperactive, hypoactive, and mixed. It occurs in 11% to 25% of older adults in inpatient settings and is associated with a significant financial burden. Older age, multiple comorbidities, recent surgery, and polypharmacy are independent risk factors for delirium. The diagnosis is clinical but can be challenging due to overlapping symptoms with dementia and depression. The Confusion Assessment Method is a screening tool that is 94% to 100% sensitive haloperidol because of their faster onset of action and fewer adverse effects. Patients hospitalized with prolonged delirium have approximately three times the chance of dying in the following year compared with patients with a quick resolution of delirium or no symptoms; therefore, prevention and early detection should be emphasized.

PMID:37725462

Categories: Literature Watch

Benzodiazepine Use Disorder: Common Questions and Answers

Tue, 2023-09-19 06:00

Am Fam Physician. 2023 Sep;108(3):260-266.

ABSTRACT

In the United States, more than 30 million adults have reported taking a benzodiazepine within the past year. Misuse-use of a drug in a way that a doctor did not direct-accounts for 17.2% of all benzodiazepine use. Family physicians face challenges when balancing the patient's perceived benefits of benzodiazepines with known risks and lack of evidence supporting their use. Benzodiazepines cause significant central nervous system-related adverse effects including sedation, confusion, memory loss, depression, falls, fractures, and motor vehicle crashes. Factors that increase the risk of adverse effects and misuse are other substance use disorders, using concomitant central nervous system medications, and central nervous system or pulmonary diseases. Compared with intermittent use, chronic daily use in older adults is associated with a higher risk of falls, fractures, hospitalizations, and death. Withdrawal symptoms such as anxiety, sleep disturbances, and agitation are common and often prolonged. Adjunctive treatment with antiepileptics, antidepressants, and pregabalin has been shown to lessen withdrawal symptoms. Deprescribing benzodiazepines for patients who use them chronically should be individualized with slow tapering over weeks to months, or longer, to minimize the intensity of withdrawal symptoms. Incorporating behavioral interventions, such as cognitive behavior therapy, improves deprescribing outcomes.

PMID:37725458

Categories: Literature Watch

Automating Detection of Drug-Related Harms on Social Media: Machine Learning Framework

Tue, 2023-09-19 06:00

J Med Internet Res. 2023 Sep 19;25:e43630. doi: 10.2196/43630.

ABSTRACT

BACKGROUND: A hallmark of unregulated drug markets is their unpredictability and constant evolution with newly introduced substances. People who use drugs and the public health workforce are often unaware of the appearance of new drugs on the unregulated market and their type, safe dosage, and potential adverse effects. This increases risks to people who use drugs, including the risk of unknown consumption and unintentional drug poisoning. Early warning systems (EWSs) can help monitor the landscape of emerging drugs in a given community by collecting and tracking up-to-date information and determining trends. However, there are currently few ways to systematically monitor the appearance and harms of new drugs on the unregulated market in Canada.

OBJECTIVE: The goal of this work is to examine how artificial intelligence can assist in identifying patterns of drug-related risks and harms, by monitoring the social media activity of public health and law enforcement groups. This information is beneficial in the form of an EWS as it can be used to identify new and emerging drug trends in various communities.

METHODS: To collect data for this study, 145 relevant Twitter accounts throughout Quebec (n=33), Ontario (n=78), and British Columbia (n=34) were manually identified. Tweets posted between August 23 and December 21, 2021, were collected via the application programming interface developed by Twitter for a total of 40,393 tweets. Next, subject matter experts (1) developed keyword filters that reduced the data set to 3746 tweets and (2) manually identified relevant tweets for monitoring and early warning efforts for a total of 464 tweets. Using this information, a zero-shot classifier was applied to tweets from step 1 with a set of keep (drug arrest, drug discovery, and drug report) and not-keep (drug addiction support, public safety report, and others) labels to see how accurately it could extract the tweets identified in step 2.

RESULTS: When looking at the accuracy in identifying relevant posts, the system extracted a total of 584 tweets and had an overlap of 392 out of 477 (specificity of ~84.5%) with the subject matter experts. Conversely, the system identified a total of 3162 irrelevant tweets and had an overlap of 3090 (sensitivity of ~94.1%) with the subject matter experts.

CONCLUSIONS: This study demonstrates the benefits of using artificial intelligence to assist in finding relevant tweets for an EWS. The results showed that it can be quite accurate in filtering out irrelevant information, which greatly reduces the amount of manual work required. Although the accuracy in retaining relevant information was observed to be lower, an analysis showed that the label definitions can impact the results significantly and would therefore be suitable for future work to refine. Nonetheless, the performance is promising and demonstrates the usefulness of artificial intelligence in this domain.

PMID:37725410 | DOI:10.2196/43630

Categories: Literature Watch

Intravesical liposomal tacrolimus for hemorrhagic cystitis: a phase 2a multicenter dose-escalation study

Tue, 2023-09-19 06:00

Int Urol Nephrol. 2023 Sep 19. doi: 10.1007/s11255-023-03783-y. Online ahead of print.

ABSTRACT

BACKGROUND: Hemorrhagic cystitis (HC) is an inflammatory disease of the bladder with sustained hematuria for which there is currently no approved drug treatment. We evaluated a liposomal tacrolimus preparation (LP-10) in patients with refractory moderate to severe sterile HC.

METHODS: This phase 2a dose-escalation study assessed the safety and efficacy of up to 2 intravesical instillations of LP-10 (2, 4, or 8 mg tacrolimus) in 13 patients with HC. Primary efficacy outcomes were changes from baseline in the number of bleeding sites on cystoscopy, microscopic urine analysis for red blood cells (RBCs), and hematuria on dipstick. Additional efficacy measures included urinary incontinence, frequency, and urgency on a 3-day diary and cystoscopy global response assessment (GRA). Blood samples for pharmacokinetic (PK) assessment were obtained in all patients.

RESULTS: Intravesical LP-10 was well tolerated, with no treatment-related severe or serious adverse events (AEs) and only 3 drug-related AEs (artificial urinary sphincter malfunction, dysuria, and bladder spasms). LP-10 blood levels showed short durations of minimal systemic uptake. Treatment resulted in significant improvements in bleeding on cystoscopy, RBC counts in urine, hematuria on dipstick, and urinary incontinence. Bleeding on cystoscopy and urinary incontinence showed dose-dependent improvements that were more pronounced in the 4 mg and 8 mg dose groups. All dose groups showed a significant improvement in cystoscopy GRA.

CONCLUSION: LP-10 was well tolerated, with clinically relevant efficacy seen in improvements in cystoscopic bleeding, hematuria, and urinary incontinence. The benefit-risk profile supports the further clinical development of LP-10 at a tacrolimus dose of 4 mg.

PMID:37725274 | DOI:10.1007/s11255-023-03783-y

Categories: Literature Watch

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