The high prevalence of abnormal magnetic resonance imaging findings in non-neuropsychiatric patients with persistently positive anti-phospholipid antibodies

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Abstract

Objectives

Thrombosis occurring in the central nervous system is common in APS patients, leading to neuropsychiatric symptoms. We investigated the prevalence of silent brain abnormalities on MRI in primary APS (PAPS) patients and aPL carriers and assessed the association between the vascular risk factors, aPL profile, clinical manifestations and MRI abnormalities.

Methods

We consecutively included 44 PAPS patients, 24 aPL carriers and 23 healthy controls with comparable age and gender in a single-centre, observational, cross-sectional study. None of the patients had a history of stroke, transient ischaemic attack, migraine, dementia, epilepsy or bipolar disorders. On cerebral MRI, we assessed the imaging features and location of abnormality. Multivariate analysis was performed to identify the risk factors contributing to the MRI abnormalities.

Results

A total of 38 (55.88%) patients had abnormal MRI findings, while only one healthy control showed some abnormalities. Lacunes were the most frequent MRI abnormality in the aPL-positive group [31/68 (45.59%)], which were followed by white matter hyperintensities [20/68 (29.41%)]. In the study population, age [odds ratio (OR) 1.086, P = 0.016] and LA positivity (OR 5.191, P = 0.002) were independent associated factors with brain MRI abnormalities. When analysed in only the aPL-positive group, age (OR 1.116, P = 0.007), female gender (OR 7.519, P = 0.025) and thrombocytopenia (OR 8.336, P = 0.047) were the significant independent risk factors with abnormal MRI.

Conclusions

PAPS patients and aPL carriers showed a high prevalence of brain MRI abnormalities, indicating an increased cerebrovascular risk, which emphasized attention to silent cerebral lesions in persistently aPL-positive patients.

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Most cited references 45

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Neuroimaging standards for research into small vessel disease and its contribution to ageing and neurodegeneration

Joanna M. Wardlaw, Eric E Smith, Geert J Biessels … (2014)

Summary Cerebral small vessel disease (SVD) is a common accompaniment of ageing. Features seen on neuroimaging include recent small subcortical infarcts, lacunes, white matter hyperintensities, perivascular spaces, microbleeds, and brain atrophy. SVD can present as a stroke or cognitive decline, or can have few or no symptoms. SVD frequently coexists with neurodegenerative disease, and can exacerbate cognitive deficits, physical disabilities, and other symptoms of neurodegeneration. Terminology and definitions for imaging the features of SVD vary widely, which is also true for protocols for image acquisition and image analysis. This lack of consistency hampers progress in identifying the contribution of SVD to the pathophysiology and clinical features of common neurodegenerative diseases. We are an international working group from the Centres of Excellence in Neurodegeneration. We completed a structured process to develop definitions and imaging standards for markers and consequences of SVD. We aimed to achieve the following: first, to provide a common advisory about terms and definitions for features visible on MRI; second, to suggest minimum standards for image acquisition and analysis; third, to agree on standards for scientific reporting of changes related to SVD on neuroimaging; and fourth, to review emerging imaging methods for detection and quantification of preclinical manifestations of SVD. Our findings and recommendations apply to research studies, and can be used in the clinical setting to standardise image interpretation, acquisition, and reporting. This Position Paper summarises the main outcomes of this international effort to provide the STandards for ReportIng Vascular changes on nEuroimaging (STRIVE).

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International consensus statement on an update of the classification criteria for definite antiphospholipid syndrome (APS).

S Miyakis, M Lockshin, T Atsumi … (2006)

New clinical, laboratory and experimental insights, since the 1999 publication of the Sapporo preliminary classification criteria for antiphospholipid syndrome (APS), had been addressed at a workshop in Sydney, Australia, before the Eleventh International Congress on antiphospholipid antibodies. In this document, we appraise the existing evidence on clinical and laboratory features of APS addressed during the forum. Based on this, we propose amendments to the Sapporo criteria. We also provide definitions on features of APS that were not included in the updated criteria.

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Antiphospholipid syndrome: clinical and immunologic manifestations and patterns of disease expression in a cohort of 1,000 patients.

Ricard Cervera, Jean-Charles Piette, Josep Font … (2002)

To analyze the clinical and immunologic manifestations of antiphospholipid syndrome (APS) in a large cohort of patients and to define patterns of disease expression. The clinical and serologic features of APS (Sapporo preliminary criteria) in 1,000 patients from 13 European countries were analyzed using a computerized database. The cohort consisted of 820 female patients (82.0%) and 180 male patients (18.0%) with a mean +/- SD age of 42 +/- 14 years at study entry. "Primary" APS was present in 53.1% of the patients; APS was associated with systemic lupus erythematosus (SLE) in 36.2%, with lupus-like syndrome in 5.0%, and with other diseases in 5.9%. A variety of thrombotic manifestations affecting the majority of organs were recorded. A catastrophic APS occurred in 0.8% of the patients. Patients with APS associated with SLE had more episodes of arthritis and livedo reticularis, and more frequently exhibited thrombocytopenia and leukopenia. Female patients had a higher frequency of arthritis, livedo reticularis, and migraine. Male patients had a higher frequency of myocardial infarction, epilepsy, and arterial thrombosis in the lower legs and feet. In 28 patients (2.8%), disease onset occurred before age 15; these patients had more episodes of chorea and jugular vein thrombosis than the remaining patients. In 127 patients (12.7%), disease onset occurred after age 50; most of these patients were men. These patients had a higher frequency of stroke and angina pectoris, but a lower frequency of livedo reticularis, than the remaining patients. APS may affect any organ of the body and display a broad spectrum of manifestations. An association with SLE, the patient's sex, and the patient's age at disease onset can modify the disease expression and define specific subsets of APS.