Relevance of gastrointestinal manifestations in a large Spanish cohort of patients with systemic lupus erythematosus: what do we know?

Gastrointestinal manifestations in systemic lupus erythematosus: data from an Indian multi-institutional inception (INSPIRE) cohort

OBJECTIVES

To study the prevalence, correlates, and outcomes of GI manifestations in a prospectively enrolled nationwide cohort of SLE in India (INSPIRE).

METHODS

It is an observational cohort study with analysis of the baseline database of the INSPIRE cohort with early outcomes assessed till 10 April 2023. Cases with GI manifestations as per the BILAG index were selected, pertinent clinical and laboratory data were retrieved for analysis. Patients with GI manifestations were compared with the rest of the cohort and factors associated with death were determined.

RESULTS

Of the 2503 patients with SLE enrolled in the INSPIRE cohort, 243 (9.7%) had GI manifestations observed early in the disease course (1, 0-3 months). Ascites (162, 6.5%), followed by enteritis (41,1.6%), pancreatitis (35, 1.4%) and hepatitis (24, 0.9%) were the most prevalent manifestations. All patients received immunosuppressive therapy, and four patients required surgery. Twenty-nine patients died (11.9%), with uncontrolled disease activity (17, 58.6%) and infection (6, 20.7%) accounting for the majority of deaths. Low socioeconomic class [lower Hazard Ratio (95% confidence intervals, CI) 2.8 (1.1-7.9); upper lower 7.5 (2-27.7); reference as upper class] and SLEDAI 2K [1.06 (1.02-1.11)] were associated with death in the GI group. GI manifestations were significantly associated with age [odds ratio and 95% CI 0.97 (0.96-0.99)], pleural effusion [4.9 (3.6-6.7)], thrombocytopenia [1.7 (1.2-2.4)], myositis [1.7 (1.1-2.7)], albumin [0.7 (0.5-0.8)], alkaline phosphatase (ALP) [1.01 (1.0-1.002)], low C3 [1.9 (1.3-2.5)], total bilirubin [1.2 (1.03-1.3)], alopecia [0.62 (0.5-0.96], elevated anti-dsDNA [0.5 (0.4-0.8)], and anti-U1RNP antibody [0.8 (0.5-0.7)] in model one; and age [0.97 (0.96-0.99)], creatinine [1.2 (1.03-1.4)], total bilirubin [1.2 (1.03-1.3)], ALP [1.01 (1.0-1.002)], albumin [0.6 (0.5-0.7)], andanti-U1RNP antibody [0.6 (0.5-0.8)] in model two in multivariate analysis compared with patients without GI features. The mortality was higher in the GI group (11.9% and 6.6%, P = 0.01) as compared with controls.

CONCLUSION

GI manifestations were observed in 9.7% of the cohort and were always associated with systemic disease activity and had higher mortality.

Systematic review of treatments for the gastrointestinal manifestations of systemic lupus erythematosus

OBJECTIVES

To comprehensively assess and present the evidence for treatments used in the management of the gastrointestinal manifestations of SLE.

METHODS

A systematic search of the literature from January 1990 to June 2022 was performed using the following databases: MEDLINE, EMBASE, PubMed and Cochrane. Key words relating to the gastrointestinal system, SLE, and treatment were used. Where there was sufficient evidence for the treatment of a manifestation, we excluded case series with <10 cases and case reports. However, for rarer manifestations with insufficient higher-level evidence, smaller case series and case reports were included.

RESULTS

A total of 29 studies including 767 patients were included in the review; six cohort studies, 11 case-control studies, and 11 case series. Specific gastrointestinal manifestations included enteritis (5 studies), mesenteric vasculitis (3 studies), acute pancreatitis (5 studies), chronic pancreatitis (1 study), intestinal pseudo-obstruction (IPO) (2 studies), hepatitis (4 studies), protein-losing enteropathy (PLE) (6 studies), acute acalculous cholecystitis (2 studies), and Budd-Chiari Syndrome (1 study). Evidence for the treatment of Ascites (13 case reports), peritonitis (3 case reports), and miscellaneous GI manifestations (11 case reports) are included as a supplemental file. Most studies demonstrated a benefit from pulsed intravenous methylprednisolone (IVMP) in severe or life-threatening manifestations, and oral prednisolone for less severe manifestations. However, the quality of evidence was low, with a high risk of bias in all studies.

CONCLUSION

This review highlights the need for standardised disease definitions and terminology, as well as consideration of including gastrointestinal manifestations in disease scoring systems. There is a significant need for high-quality clinical trials in the treatment of the gastrointestinal manifestations of SLE, which will likely need to be multi-centre. We hope that this review will promote awareness of the gastrointestinal manifestations of SLE, and serve as a practical guide for evidence-based treatment.

Investigation of Nutritional Factors and Malnutrition Risk Prediction Model in Hospitalized Patients with Systemic Lupus Erythematosus in China

Introduction

Nutritional status is a critical indicator of overall health and immune function, significantly influencing treatment outcomes. Despite its importance, the nutritional status of patients with systemic lupus erythematosus (SLE) often receives insufficient attention. This study aims to evaluate the nutritional status of patients with SLE, identify factors associated with malnutrition, and develop a risk prediction model for malnutrition in this population.

Methods

We collected clinical data from a convenience sample of SLE patients at a general hospital in Ningxia Province, China, between January and December 2022. Univariate and multivariate logistic regression analyses were performed to determine the independent risk factors for malnutrition. A risk prediction model was constructed and evaluated using the receiver operating characteristic (ROC) curve.

Results

This study included 420 patients with SLE (mean age: 41.43 years, 91.7% women), of whom 46.2% were malnourished based on their serum albumin levels. Multivariate logistic regression analysis identified monthly income (OR=0.192, P<0.05), sleep quality (OR=2.559, P<0.05), kidney involvement (OR=4.269, P<0.05), disease activity (OR=2.743, P<0.05), leukocyte count (OR=1.576, P<0.05), lymphocyte count (OR=0.393, P<0.05), hemoglobin (OR=0.972, P<0.05), complement C3 (OR=0.802, P<0.05), and complement C4 (OR=0.493, P<0.05) as independent risk factors for malnutrition. The prediction model showed good predictive value with an area under the ROC curve of 0.895 (95% CI: 0.823-0.840), sensitivity of 0.907, and specificity of 0.827. The Hosmer-Lemeshow test indicated a good model fit (χ²=10.779, P=0.215).

Discussion

Malnutrition is a significant concern among SLE patients, influenced by a range of socioeconomic and clinical factors. Our risk prediction model, with its high sensitivity and specificity, provides a robust tool for early identification of malnutrition in this population. Implementing this model in clinical practice can guide healthcare providers in prioritizing at-risk patients, enabling proactive nutritional interventions that could potentially improve clinical outcomes, enhance quality of life, and reduce healthcare costs associated with SLE.

Prevalence of coeliac disease in patients with systemic lupus erythematosus: a systematic review and meta-analysis

BACKGROUND

There is some evidence of a higher prevalence of coeliac disease (CD) among patients with SLE than in the general population. However, the prevalence estimates vary substantially.

OBJECTIVE

To investigate the prevalence of CD among patients with SLE through systematic review and meta-analysis.

METHODS

We performed searches in the databases of Medline, Embase, Cochrane and Web of Science Core Collection between 1 January 1990 and 9 July 2023. A total of 2053 publications were rendered in the searches, of which 68 were reviewed in full text and 14 included in the analyses. Primary analysis estimated the pooled prevalence of biopsy-verified CD in patients with SLE. In the secondary analysis, the prevalence of serological markers indicative of CD was investigated. The quality of studies was appraised using the Joanna Briggs Institute Critical Appraisal Tool. We conducted meta-regression analyses to investigate associations between the prevalence of CD in individuals with SLE and publication year, study population size, CD prevalence in the general population, proportion of females and quality assessment score.

RESULTS

A total of 14 studies met the inclusion criteria, of which 11 were included in the primary analysis of biopsy-verified CD. Among 1238 patients with SLE, 14 had CD. The weighted pooled prevalence of CD was 0.7% (95% CI 0.0 to 1.8). The weighted pooled prevalence of CD serological markers in 1063 patients with SLE was 3.7% (95% CI 1.4 to 6.7). In meta-regression analyses, no associations between CD prevalence and study characteristics, demographics and quality assessment scores were found.

CONCLUSIONS

In this meta-analysis, we found a weighted pooled prevalence of biopsy-verified CD in patients with SLE comparable with the prevalence in the general population. Our findings do not support routine screening for CD in patients with SLE. However, individual screening could be considered in cases of clinical suspicion and additional risk factors for CD.

PROSPERO REGISTRATION NUMBER

CRD42022339594.

Akkermansia muciniphila and Lactobacillus plantarum ameliorate systemic lupus erythematosus by possibly regulating immune response and remodeling gut microbiota

Systemic lupus erythematosus (SLE), characterized by persistent inflammation, is a complex autoimmune disorder that affects all organs, challenging clinical treatment. Dysbiosis of gut microbiota promotes autoimmune disorders that damage extraintestinal organs. Modulating the gut microbiome is proposed as a promising approach for fine-running parts of the immune system, relieving systematic inflammation in multiple diseases. This study demonstrated that the administration of Akkermansia muciniphila and Lactobacillus plantarum contributed to an anti-inflammatory environment by decreasing IL-6 and IL-17 and increasing IL-10 levels in the circulation. The treatment of A. muciniphila and L. plantarum restored the intestinal barrier integrity to a different extent. In addition, both strains reduced the deposit of IgG in the kidney and improved renal function significantly. Further studies revealed distinct remodeling roles of A. muciniphila and L. plantarum administration on the gut microbiome. This work demonstrated essential mechanisms of how A. muciniphila and L. plantarum remodel gut microbiota and regulate the immune responses in the SLE mice model. IMPORTANCE Several pieces of research have demonstrated that certain probiotic strains contribute to regulating excessive inflammation and restoring tolerances in the SLE animal model. More animal trials combined with clinical studies are urgently needed to further elucidate the mechanisms for the effect of specific probiotic bacteria in preventing SLE symptoms and developing novel therapeutic targets. In this study, we explored the role of A. muciniphila and L. plantarum in ameliorating the SLE disease activity. Both A. muciniphila and L. plantarum treatment relieved the systemic inflammation and improved renal function in the SLE mouse model. We demonstrated that A. muciniphila and L. plantarum contributed to an anti-inflammatory environment by regulating cytokine levels in the circulation, restoring the intestinal barrier integrity, and remodeling the gut microbiome, however, to a different extent.

Gastrointestinal Manifestations in Patients with Systemic Lupus Erythematosus

Systemic lupus erythematosus (SLE) is an autoimmune disorder of unknown etiology. Women of childbearing age are affected approximately nine times more often than men. Its presentation and course are highly variable, ranging from mild to fulminant systemic disease. Any organ can be affected by SLE. Although less common than in other systems, such as the skin, joints, and kidneys, 40%–60% of SLE patients have gastrointestinal (GI) involvement. SLE can affect any part of the GI tract, from the mouth to the anus. GI manifestations can be caused by SLE, medication-related side effects, or non-SLE causes including infection. This article reviews the most common types of GI involvement associated with SLE.