Increased risk of depressive disorder following diagnosis with bladder pain syndrome/interstitial cystitis

An integrated machine learning framework for developing and validating a diagnostic model of major depressive disorder based on interstitial cystitis-related genes

BACKGROUND

Major depressive disorder (MDD) and interstitial cystitis (IC) are two highly debilitating conditions that often coexist with reciprocal effect, significantly exacerbating patients' suffering. However, the molecular underpinnings linking these disorders remain poorly understood.

METHODS

Transcriptomic data from GEO datasets including those of MDD and IC patients was systematically analyzed to develop and validate our model. Following removal of batch effect, differentially expressed genes (DEGs) between respective disease and control groups were identified. Shared DEGs of the conditions then underwent functional enrichment analyses. Additionally, immune infiltration analysis was quantified through ssGSEA. A diagnostic model for MDD was constructed by exploring 113 combinations of 12 machine learning algorithms with 10-fold cross-validation on the training sets following by external validation on test sets. Finally, the "Enrichr" platform was utilized to identify potential drugs for MDD.

RESULTS

Totally, 21 key genes closely associated with both MDD and IC were identified, predominantly involved in immune processes based on enrichment analyses. Immune infiltration analysis revealed distinct profiles of immune cell infiltration in MDD and IC compared to healthy controls. From these genes, a robust 11-gene (ABCD2, ATP8B4, TNNT1, AKR1C3, SLC26A8, S100A12, PTX3, FAM3B, ITGA2B, OLFM4, BCL7A) diagnostic signature was constructed, which exhibited superior performance over existing MDD diagnostic models both in training and testing cohorts. Additionally, epigallocatechin gallate and 10 other drugs emerged as potential targets for MDD.

CONCLUSION

Our work developed a diagnostic model for MDD employing a combination of bioinformatic techniques and machine learning methods, focusing on shared genes between MDD and IC.

This pain drives me crazy: Psychiatric symptoms in women with interstitial cystitis/bladder pain syndrome

BACKGROUND

Interstitial cystitis/bladder pain syndrome (IC/BPS) is an at least 6-mo noninfectious bladder inflammation of unknown origin characterized by chronic suprapubic, abdominal, and/or pelvic pain. Although the term cystitis suggests an inflammatory or infectious origin, no definite cause has been identified. It occurs in both sexes, but women are twice as much affected.

AIM

To systematically review evidence of psychiatric/psychological changes in persons with IC/BPS.

METHODS

Hypothesizing that particular psychological characteristics could underpin IC/BPS, we investigated in three databases the presence of psychiatric symptoms and/or disorders and/or psychological characteristics in patients with IC/BPS using the following strategy: ("interstitial cystitis" OR "bladder pain syndrome") AND ("mood disorder" OR depressive OR antidepressant OR depression OR depressed OR hyperthymic OR mania OR manic OR rapid cycl^asterisk OR dysthymi^asterisk OR dysphori^asterisk).

RESULTS

On September 27, 2023, the PubMed search produced 223 articles, CINAHL 62, and the combined PsycLIT/ PsycARTICLES/PsycINFO/Psychology and Behavioral Sciences Collection search 36. Search on ClinicalTrials.gov produced 14 studies, of which none had available data. Eligible were peer-reviewed articles reporting psychiatric/psychological symptoms in patients with IC/BPS, i.e. 63 articles spanning from 2000 to October 2023. These studies identified depression and anxiety problems in the IC/BPS population, along with sleep problems and the tendency to catastrophizing.

CONCLUSION

Psychotherapies targeting catastrophizing and life stress emotional awareness and expression reduced perceived pain in women with IC/BPS. Such concepts should be considered when implementing treatments aimed at reducing IC/BPS-related pain.

Validation study of new clinical scoring - "Apollo Clinical Scoring system" for bladder pain syndrome/interstitial cystitis and comparison of outcome with standard "O'Leary-Sant score"

AIM

Validation of the recently published newer clinical scoring system for bladder pain syndrome/interstitial cystitis and comparison of the results with the pre-existing standard O'Leary-Sant score.

INTRODUCTION

The symptoms are our primary guide to disease severity analysis, treatment, and response monitoring. The combined ICSI/ICPI (O'Leary-Sant Interstitial Cystitis Symptom and Problem Index) consist of a four-item symptom and problem index focusing on urgency, frequency, nocturia, and pain. A new scale, assigning more weight to pain and nocturia and adding the domains of sexual dysfunction and psychological impact, has been published by one of the authors (El Khoudary et al. J Women's Health 2002. 18:1361-1368; 7).

MATERIAL AND METHODS

This is a prospective study conducted to validate a newer clinical scoring system, namedht e 'Apollo Clinical Scoring' (ACS) system for patients with bladder pain syndrome/ interstitial cystitis (BPS/IC), and to compare its outcome with the simultaneously applied standard O'Leary-Sant (OLS) score. Thirty-five patients of BPS/IC diagnosed using the ESSIC definition were enrolled in the study and followed for 6 months. Intraclass correlation coefficient (ICC) for test-retest reliability, and Cronbach's α for measure of internal consistency, were applied to both scoring systems.

RESULTS

Intraclass correlation coefficient for ACS was 0.715 and for OLS was 0.689. Cronbach's α for ACS was 0.736 and for OLS was 0.698.

CONCLUSION

The present study suggests that the recently devised Apollo Clinical Scoring (ACS) system for patients of BPS/IC is internally consistent and a reliable scoring system. When compared with OLS in parallel setting, the newer ACS appeared to be marginally better.

Comorbidities in a Nationwide, Heterogenous Population of Veterans with Interstitial Cystitis/Bladder Pain Syndrome

OBJECTIVE

To examine the prevalence of comorbid conditions in a nationwide population of men and women with IC/BPS utilizing a more heterogeneous sample than most studies to date.

METHODS

Using the Veterans Affairs Informatics and Computing Infrastructure, we identified random samples of male and female patients with and without an ICD-9/ICD-10 diagnosis of IC/BPS. Presence of comorbidities (NUAS [chronic fatigue syndrome, fibromyalgia, irritable bowel syndrome, migraines], back pain, diabetes, and smoking) and psychosocial factors (alcohol abuse, post-traumatic stress disorder, sexual trauma, and history of depression) were determined using ICD-9 and ICD-10 codes. Associations between these variables and IC/BPS status were evaluated while adjusting for the potential confounding impact of race/ethnicity, age, and gender.

RESULTS

Data was analyzed from 872 IC/BPS patients (355 [41%] men, 517 [59%] women) and 558 non-IC/BPS patients (291 [52%] men, 267 [48%] women). IC/BPS patients were more likely than non-IC/BPS patients to have a greater number of comorbidities (2.72+/-1.77 vs 1.73+/-1.30, P < 0.001), experience one or more NUAS (chronic fatigue syndrome, fibromyalgia, irritable bowel syndrome, and migraines) (45% [388/872] vs. 18% [101/558]; P < 0.001) and had a higher prevalence of at least one psychosocial factor (61% [529/872] v. 46% [256/558]; P < 0.001). Differences in the frequencies of comorbidities between patients with and without IC/BPS were more pronounced in female patients.

CONCLUSION

These findings validate the findings of previous comorbidity studies of IC/BPS in a more diverse population.

Safety, tolerability, and efficacy of LiRIS 400 mg in women with interstitial cystitis/bladder pain syndrome with or without Hunner lesions

AIMS

Two phase 2 studies were conducted to assess the efficacy and safety of lidocaine-releasing intravesical system (LiRIS) in patients with interstitial cystitis/bladder pain syndrome (IC/BPS) with (Study 001; NCT02395042) or without, (Study 002; NCT02411110) Hunner lesions (HL).

METHODS

Both were multicenter, randomized, double-blind, placebo-controlled, and enrolled women aged ≥18 years. In Study 001, patients were randomized 2:1:1 to LiRIS 400 mg/LiRIS 400 mg, placebo/LiRIS 400 mg, or placebo/placebo for a continuous 28 (2 × 14)-day period. In Study 002, patients were randomized 1:1 to LiRIS 400 mg or placebo for a continuous (single treatment) 14-day period.

RESULTS

In total, 59 and 131 patients received treatment in Studies 001 and 002, respectively. There was no statistically significant difference in the primary endpoint, the change from baseline to Week 4 of follow-up post-removal in mean daily average bladder numeric rating scale (NRS) pain score in either study (Study 001: placebo/placebo, -1.6; LiRIS/LiRIS, -2.7, p = 0.142; placebo/LiRIS, -2.5, p = 0.319; Study 002: LiRIS -1.2; placebo, -1.5, p = 0.505). There was no statistically significant difference between groups in daily worst NRS pain score, number of micturitions/day or urgency episodes/day. There was no clear trend for reduction in number of HL for LiRIS vs placebo. The frequency of treatment-emergent adverse events was similar between treatment groups in both studies; most were mild or moderate intensity.

CONCLUSION

These studies did not demonstrate a treatment effect of LiRIS 400 mg compared with placebo, either in patients with IC/BPS with HL, or in those without HL.

Evaluation of the efficacy of Chinese herbal medicine and acupuncture for the prevention of mental disorders in interstitial cystitis patients: A nationwide population-based study

Traditional Chinese medicine (TCM) is commonly used for urinary symptoms in Eastern countries. Since there are few effective treatments available for patients with interstitial cystitis/bladder pain syndrome (IC/BPS), the psychological burden leads to increased healthcare-seeking behavior. Some patients may therefore seek TCM treatment for related urinary symptoms. Due to limited clinical research evaluating the effects of TCM on IC/BPS, we conducted a nationwide population-based cohort study to investigate the relationship between TCM and mental disorders among these patients. The IC/BPS cohort and its matched non-IC/BPS comparison cohort were recruited from the National Health Insurance (NHI) Research Database between 2000 and 2011. Patients with the use of Chinese herbal medicine (CHM) granules or acupuncture over 90 days per year were enrolled as the TCM users. Multivariable Cox proportional hazards models were used to evaluate the hazard ratio (HR) of mental disorders related to interstitial cystitis. The incidence of mental disorders in the 2 cohorts was assessed with Kaplan-Meier curves. A total of 1123 patients with IC/BPS and 4492 matched non-IC/BPS subjects were included in this study. The IC/BPS cohort demonstrated higher incidence rate of mental disorders than the cohort without IC/BPS (adjusted HR: 2.21, 95% confidence interval [CI]: 1.73-2.81). There was no statistically significant difference in the risk of mental disorders between IC/BPS patients with and without CHM granules or acupuncture treatment (adjusted HR: 0.99, 95% CI: 0.58-1.68). Our results indicated that CHM and acupuncture showed insignificant efficacy in the prevention of mental disorders in IC/BPS patients.

A modified clinical scoring system for bladder pain syndrome: Long term experience

PURPOSE

To document a modified clinical scoring system in patients with bladder pain syndrome that increases weightage to pain and nocturia and includes measures for sexual dysfunction and psychological impact. The clinical outcome of a set combination of treatment modalities linked to the clinical score at entry was also made.

METHODS

The new proposed scale was used to assess and treat 190 enrolled patients from January 2009 to September 30, 2017. The patients were evaluated using the new scoring system at the time of induction, after 1, 3 and 6 months after commencement of treatment. Thereafter, they were followed every 6 months. The new scoring system included increased weightage to pain and nocturia and added domains of sexual dysfunction and psychological impact. The patients were treated with a protocol followed by the authors and published in the year 2007. A pictorial linkage of treatment modalities used with the clinical score of the patient was also described.

RESULTS

A total of 174 evaluable patients had a follow up between 6 and 105 months (mean 64 months). The patients had age distribution between 24 and 76 years and included 19 male patients. 154 out of 174 patients (88.5%) had good or excellent response to treatment using the proposed scale at the end of 6 months.

CONCLUSIONS

The proposed clinical scale appeared to aid clinical stratification of severity of the disease at the induction and during follow up. The treatment protocol could be linked with the clinical score at the time of induction.

Female Veterans With Diagnoses of Both Chronic Pelvic Pain and Overactive Bladder; How Do They Compare to Women Diagnosed With Interstitial Cystitis?

OBJECTIVE

The objective of this study was to compare women with a known diagnosis of interstitial cystitis (IC) to a population that might be at risk for the diagnosis of IC, women with diagnoses of both chronic pelvic pain (CPP) and overactive bladder (OAB).

METHODS

We conducted a retrospective study of data from the Veterans Affairs Corporate Data Warehouse. The cohort included all female veterans who had established care with a primary care provider from 1997 to present. International Classification of Diseases, Ninth Revision codes were used to identify women with a diagnosis of IC, CPP, and OAB. Demographic data and comorbidities were compared between groups.

RESULTS

A total of 596,815 women were identified. Two thousand three hundred one women (0.4%) were diagnosed with IC; 4459 women (0.7%) were diagnosed with CPP and OAB. At baseline, women with OAB and CPP were more likely to identify as minority (P < 0.001). Anxiety (57.3% vs 49.5%), depression (39.0% vs 46.0%), and posttraumatic stress disorder (29.7 vs 26.4%) were all more common in the CPP and OAB group than in the IC group. In the multivariable model, women with CPP and OAB were more likely to identify as a minority, use tobacco, and carry a diagnosis of anxiety.

CONCLUSIONS

There were more patients diagnosed with CPP and OAB compared with patients diagnosed with IC in this population of female veterans. Given the high rate of comorbid anxiety and depression in both groups, further study is warranted to determine whether these women are misdiagnosed.

Important role of physicians in addressing psychological aspects of interstitial cystitis/bladder pain syndrome (IC/BPS): a qualitative analysis

INTRODUCTION

Interstitial cystitis/bladder pain syndrome (IC/BPS) is a poorly understood source of chronic pain causing significant morbidity, with variable treatment success. Despite the need to understand patient perspectives in chronic pain, there is a paucity of qualitative data for IC/BPS. We aimed to acquire information regarding patient experience with IC/BPS symptoms and with their medical care to elicit suggestions to improve patient satisfaction with that care.

METHODS

Fifteen women with IC/PBS participated in a total of four focus groups. Sessions were recorded and transcribed and information deidentified. Focus groups were conducted until thematic saturation was reached. All transcripts were coded and analyzed by a minimum of three independent physician reviewers. Investigators identified emergent themes and concepts using grounded-theory methodology.

RESULTS

Participant's mean age was 52.6 years, with an average IC/BPS duration of 6.3 years. Thematic saturation was reached after four focus groups. We identified three emergent patient experience concepts: IC/PBS is debilitating, the disease course is unpredictable and unrelenting, and patients experience significant isolation. Importantly, suicidal ideation was expressed in each group. Patients voiced strong preference for physicians who provided education regarding the condition, an array of treatment options, organized treatment plans, and optimism and hope regarding treatment outcomes.

CONCLUSIONS

Our study presents novel findings of the importance of patient-physician interaction in IC/BPS and reinforces the tremendous disability and burden of this disease, which frequently manifests in suicidal ideation. Patients preferred organized treatment plans with diverse choices and providers who offered hope in dealing with their condition.