Lipoprotein (a), thrombophilia and inflammatory bowel disease

Gastrointestinal complications of hepatic glycogen storage disease: a national survey questionnaire study in China

BACKGROUND

Hepatic glycogen storage diseases (GSD) are inborn errors of metabolism with abnormal storage or utilization of glycogen, a complex disease with significant genetic heterogeneity and similar clinical manifestations. This study aimed to describe the gastrointestinal symptoms and endoscopic features of hepatic GSD, including types Ia, Ib, III, VI, and IX, to provide evidence for etiology and treatment.

METHODS

A national cohort survey questionnaire was distributed to patients diagnosed with GSD type Ia, Ib, III, VI, and IX through genetic testing or their parents in mainland China in May 2022. Expert gastroendoscopists performed endoscopic examinations and evaluations in 10 hospitals. Descriptive statistics were used for analysis.

RESULTS

A total of 315 patients with hepatic GSD were included in the study, including 191 males and 124 females, the median age at diagnosis was 1.42 years (range = 0.08-36.08 years), with a median age of 5.42 years at the time of investigation (range = 0.58-38.08 years). 95% of patients relied on uncooked corn starch (UCCS) for blood glucose maintenance, and the median age of initiation was 18.5 months (range = 4-360 months). The common characteristics of these GSDs were hypoglycemia, lactic acidosis, anemia, liver enlargement, hyperlipidemia, hyperuricemia, and weakness. More than 60% of patients reported gastrointestinal symptom including anorexia, nausea/vomiting, abdominal pain, abdominal bloating, diarrhea, and mucus or bloody stool. The incidence of gastrointestinal symptoms in patients with GSD type Ia, Ib, III, VI and IX were 68%, 68%, 48%, 59% and 48%, respectively. A total of 48 GSD patients underwent gastroenteroscopy, 54% (26/48, 24 patients with type Ib, 1 patient with type Ia and 1 with III) were diagnosed with GSD-associated inflammatory bowel disease (IBD), the endoscopic images showed mucosal edema, erythema, erosions, single or scattered multiple large, deep, round ulcers and strictures, without linear ulcers and cobblestone mucosal lesions.

CONCLUSION

Patients with GSD type Ia, Ib, III, VI and IX had different degrees of gastrointestinal complications, among which patients with type Ia, Ib and III were the most prominent, and the proportion of GSD-Ib patients had a higher proportion of GSD-associated IBD.

Venous and arterial thromboembolism in patients with inflammatory bowel diseases

The risk of thromboembolism (TE) is increased in patients with inflammatory bowel disease (IBD), mainly due to an increased risk of venous TE (VTE). The risk of arterial TE (ATE) is less pronounced, but an increased risk of cardiovascular diseases needs to be addressed in IBD patients. IBD predisposes to arterial and venous thrombosis through similar prothrombotic mechanisms, including triggering activation of coagulation, in part mediated by impairment of the intestinal barrier and released bacterial components. VTE in IBD has clinical specificities, i.e., an earlier first episode in life, high rates during both active and remission stages, higher recurrence rates, and poor prognosis. The increased likelihood of VTE in IBD patients may be related to surgery, the use of medications such as corticosteroids or tofacitinib, whereas infliximab is antithrombotic. Long-term complications of VTE can include post-thrombotic syndrome and high recurrence rate during post-hospital discharge. A global clot lysis assay may be useful in identifying patients with IBD who are at risk for TE. Many VTEs occur in IBD outpatients; therefore, outpatient prophylaxis in high-risk patients is recommended. It is crucial to continue focusing on prevention and adequate treatment of VTE in patients with IBD.

Thrombophilic Risk Factors in Patients With Inflammatory Bowel Disease

Background

Inflammatory bowel disease (IBD) patients have an increased risk for thromboembolism. The aim of this study was to assess the presence of thrombophilic risk factors in IBD patients and to assess the associations of these factors with disease activity.

Methods

Forty-eight patients with IBD (24 ulcerative colitis, 24 Crohn’s disease) and 40 matched healthy control individuals were enrolled. In addition to routine biochemical analysis, fasting blood samples were studied for prothrombin time (PT), activated partial thromboplastin time (aPTT), fibrinogen, protein-C, protein-S, antithrombin III, factor VII, factor VIII, D-dimer, vitamin B₁₂, folic acid and homocysteine.

Results

Levels of erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), fibrinogen, D-dimer and the number of platelets were significantly higher in patients with IBD. When compared to control group, in patients with Crohn’s disease serum homocystein levels were significantly higher (p = 0.025) while serum folic acid levels were significantly lower (p < 0.019). Levels of fibrinogen, D-dimer, protein C, factor VIII, total homocystein and the number of platelets were found to be significantly higher in Crohn’s disease patients who were in active period of the disease.

Conclusions

Thrombophilic defects are multifactorial and might be frequently seen in IBD patients. They might contribute to thrombotic complications of this disease.

[Neurological complications of inflammatory bowel disease]

Although ulcerative colitis and Crohn's disease have traditionally been considered to be inflammatory diseases limited to the gastrointestinal tract, it has been shown that both pathologies are frequently accompanied by various extraintestinal disorders. There is an increasing evidence that they may also manifest in the nervous system, including the peripheral and the central parts. Although some of these neurological complications have been known for a long time, such as cerebrovascular disease, vasculitis and autoinmune processes including neuropathies and cerebral demyelination, others have been recently described. With the exception of some of this complications such as the thromboembolism, evidence for a casual relationship relies merely on single case reports or case series. In this article, we try to review the existing evidence on neurological manifestations of both variants of inflammatory bowel disease.