Time to redefine hyperuricemia? The serum uric acid cut-off level for precipitation might be lower: a pilot study.

BACKGROUND: Hyperuricemia is classically defined as serum uric acid (SUA) value higher than 6.8 mg∕dL; between hyperuricemic patients, only 15-20% will develop gout. Our first goal was to find if there is a specificity of the "snowstorm" feature on ultrasound (US) for hyperuricemia. Moreover, we aimed to determine if there is a level of SUA from which the urates tend to appear in the synovial fluid, without generating a typical clinical gouty flare. PATIENTS, MATERIALS AND METHODS: We conducted a cross-sectional, transverse study, including 108 consecutive patients that displayed a set of clinical and imaging features, such as swollen knee and US proof for knee joint effusion. RESULTS: Performing binary logistic regression, the relation between the explanatory variable (hyperechogenic spots) and the response variable (SUA) was demonstrated to be a significant one (p=0.005). The value of 0.397 for the statistical phi coefficient suggests a medium intensity association between the diagnosis of gout or asymptomatic hyperuricemia and whether the patients have hyperechogenic spots or not. We found the cut-off value for SUA equal to 4.815 mg∕dL, regardless of gender, from which, the urate starts to precipitate. Values for men tend to be higher in comparison to the ones found for women (4.95 mg∕dL vs. 3.9 mg∕dL). CONCLUSIONS: The "snowstorm" aspect of the fluid might be the result of an increased level of SUA and more than this, the cut-off level for SUA to precipitate might be lower than the fore used values.

Entheseal involvement in a group of psoriatic arthritis patients: An ultrasonographic study.

Psoriatic arthritis (PsA) is an inflammatory potentially destructive disease that requires early diagnosis and therapeutic approach. Its main pathogenic event and the condition's hallmark is considered to be enthesitis. Clinical examination of the enthesis can be a challenge in the clinical practice; thus, ultrasonography (US) has emerged as an indispensable imaging tool for evaluating both structural and inflammatory changes of this structure. In the present study, we aimed to analyze the type and frequency of entheseal involvement in PsA patients by US examination, performing a retrospective study on 41 patients diagnosed with PsA. Ultrasonographically confirmed enthesitis, identified according to Outcome Measures in Rheumatology group (OMERACT, initially Outcome Measures in Rheumatoid Arthritis Clinical Trials) definitions, was present in 26 of the included patients, Achilles enthesis being the most common site involved. The prevalence of tendon structure abnormalities and the presence of entesophytes underlines the importance of chronic inflammation on entheseal sites. US examination has proven to be a reliable imaging method, with significant and continuous improvement, which is clearly a requisite part for current understanding and diagnosis of enthesitis and more than this, for the patient follow-up algorithm.

Staphylococcus aureus-induced septic arthritis of the ankle related to malum perforans in a diabetes patient.

Septic arthritis (SA) is a less common joint pathology with potentially fatal outcome. It is considered a medical emergency, in which prompt diagnosis and differentiation of bacterial etiology is essential for appropriate management. The knee is the most prevalent site for SA (~50% of cases), followed by hip, shoulder, and elbow. Early intervention requires an accurate diagnosis and imaging techniques enable both a positive diagnosis, as well as arthrocentesis and liquid analysis, the "gold standard" criteria. We report the case of a 70-year-old patient, with history of rheumatoid arthritis (RA), diabetes mellitus (DM) and persistent left malum perforans in the last year, with development of a severe and debilitating Staphylococcus aureus-related SA of the left ankle, which posed significant therapeutic challenges. He developed a plantar lesion at the ball of the left foot, in the past one year, which was labeled as malum perforans in the setting of DM. Musculoskeletal ultrasound was the primary imaging technique used to define the location and extent of the infectious process. Cultures drawn from the tissue were positive for S. aureus. After an antibiotic course, the apparent infectious features were remitted but the long-lasting open wound failed to improve. Antibiotic therapy was initiated in accordance with culture sensibility tests but short- and long-term outcome was unfavorable with both treatment unresponsiveness and comorbidity burden posing considerable difficulties. The association and interrelation between different comorbidities (such as hypertension, diabetes, or obesity), chronic systemic inflammation (e.g., C-reactive protein level, disease activity), and RA medication is sometimes difficult to understand and to address in daily practice, and this case report highlights multiple toils encountered in a SA patient with RA on immunosuppressive therapy and complicated DM.

Facing the Unseen - Metabolic Syndrome in Psoriatic Arthritis.

Psoriatic arthritis (PsA) is a heterogeneous multifaceted inflammatory artropathy, associated or not with psoriasis, part of the spondyloarthropaties group. Beyond articular and skin manifestations, patients with psoriatic disease are prone to associated comorbidities, including cardiovascular disease (CVD), obesity and metabolic syndrome, diabetes, or fatty liver disease; in order to improve the prognosis and the quality of life for these patients, it is mandatory to prevent, identify and properly manage any of the comorbidities. We aimed to assess the presence of traditional CV risk factors and MetS in a group of PsA patients, compared to controls and their possible inter-relation. We performed an observational study on 41 consecutive patients diagnosed with PsA based on CASPAR established criteria. Our subjects met the criteria of MetS in a percentage of 43.90% of the cases and AHT, frequently reported in higher percentages for PsA or psoriasis patients, compared to general population was also revealed in significant percentages by our data. Regarding dyslipidemia, it is confirmed and validated by several studies that patients diagnosed with PsA or psoriasis associate an altered lipid metabolism and our study noticed data accordingly. As PsA is a condition characterized by chronic inflammation, a non-traditional CV risk factor, each patient should benefit from a periodic close evaluation in order to approach a compete and early therapeutic intervention and reduce further CV morbidity and mortality rates.

New insights into IL-17/IL-23 signaling in ankylosing spondylitis (Review).

Ankylosing spondylitis (AS) is a progressive common autoimmune inflammatory disease, part of the spondylarthritis group, characterized, besides clinical spinal and peripheral joint inflammation, by enthesitis and new bone formation, that can lead to severe functional impairment. Beyond intensive and continuous research on the pathogenic process extensively performed in recent years, their impact on therapeutic management remains open to future development. Better knowledge of AS pathogenesis have shown results progressively and studies are being performed to advance our current understanding of the disease. It is well known that tumor necrosis factor (TNF) exerts a central role, along with interleukin-17 (IL-17) and interleukin-23 (IL-23), demonstrated by several clinical studies. Similar to other rheumatic inflammatory conditions, SA is associated with an early process of systemic bone loss, both trabecular and cortical, consecutive osteopenia, osteoporosis, and high fracture risk. Current personalized therapeutic options benefit from new published data, to prevent future complications and to improve quality of life.

Neuroinflammation in systemic lupus erythematosus - a review.

Neuroinflammation is a complex process that contributes to the pathogenesis of both immune mediated and neurodegenerative pathologies. Systemic lupus erythematosus (SLE) is the prototype of connective tissue diseases that can present the complete spectrum of neurological and psychiatric dysfunctions. The precise etiological diagnosis of neuropsychiatric systemic lupus erythematosus (NPSLE) is rather difficult to be established and it is still controversial the exact timing of neuropsychiatric (NPS) events: either central nervous system (CNS) is the initial target of autoimmune abnormalities, either NPS symptoms are a part of multisystem involvement. Ischemic and inflammatory mechanisms have an important input on NPSLE pathogenesis. Neuroinflammation, consequent to blood-brain barrier (BBB) damage, local and systemic production of autoantibodies, determine neuronal injury and apoptosis, further responsible for diffuse cerebral events, mostly cognitive dysfunction and psychotic disorder. Moreover, SLE complications or therapy complications can interfere and contribute to complex clinical manifestations that can be present in SLE patients. Understanding the role of each pathogenic way can provide not only an early diagnosis, but a more accurate therapeutic approach of these patients.

The role of skin and muscle biopsy in the diagnosis of main connective tissue diseases.

Systemic involvement in autoimmune diseases is often unclear and organ changes are confounding, thus making it difficult to have an early accurate diagnosis. In those situations, both clinical and paraclinical findings might orientate the diagnosis, but only histological or immunohistochemistry changes might be accurate enough. The skin histological changes are relevant and sometimes might have a tremendous role in the accurate diagnosis of autoimmune rheumatic diseases, due to the correlation with the clinical systemic manifestations of the diseases and through the accessibility of biopsy. In the same time, muscle biopsy can provide important support for physicians improving diagnosis and optimizing management of connective tissue diseases.

High frequency ultrasonography of the hand versus anti-RA33 evaluation in early rheumatoid arthritis - a pilot study.

AIM: Accurate diagnosis and early treatment in rheumatoid arthritis (RA) can lead to a good outcome and a correct management of the disease. We aimed toinvestigate the prognostic value of anti-RA33 antibodies, by evaluating the relationship with ultrasonographic (US) findings in patients with early RA. MATERIAL AND METHODS: We performed a prospective study which included 29 patients, diagnosed with early RA according to the ACR/EULAR 2010 criteria and 21 sex and age-matched control subjects. All patients underwent clinical and biological assessment, followed by US examination in grayscale (GS) and power Doppler (PD) at baseline and after 12 months [from the second to the fifth metacarpophalangeal (MCP) and proximal interphalangeal (PIP) joints and wrists (RCC), in dorsal aspect]. The second and fifth MCP joints were scanned also in lateral aspects. RESULTS: The initial GS evaluation revealed the presence of synovitis in all 29 patients; PD found at least one joint with a PD grade higher than 1 in 23 patients, higher than 2 in 20 patients, and grade 3 in 6 patients; at 12 months, we revealed the presence of GSUS synovitis in 25 patients and PDUS examination found active synovitis in 12 subjects. In those patients, the anti-RA33 titre was significantly lower compared to those without PDUS active synovitis (p=0.031), with a moderately negative correlation (r=-0.519, p=0.0039). CONCLUSIONS: The current study shows that anti-RA33 antibodies might constitute an additional tool for diagnosing early RA patients and can help identify patients with mild disease and a low level of activesynovitis.

Intramuscular hemangioma of the arm: ultrasonography and pathology features.

Hemangiomas are between the most frequent soft tissue masses and despite the vascular origin, they do not generate metastases and do not have malignant evolution. They are frequent in childhood and female sex is more frequently affected. If deeply located, these tumors are difficult to diagnose and thus an imaging method is often needed, but conventional radiology is not sufficient. If superficially located, it frequently involves the skin and subcutaneous tissues, but in the deeper layer, they are often intramuscular. Clinical findings of intramuscular hemangioma include swelling, pain and sometimes loss of muscle function.

Ultrasonography role in the evaluation of a giant cell tumor of the flexor pollicis longus tendon.

Hand tendons lesions represent a challenge for an accurate diagnosis, an optimal treatment strategy, the description of the lesion and its location being an important step. The non-invasive ultrasound evaluation was demonstrated to be an important diagnostic method in these types of lesions, especially in those situations where clinical evaluation failed to reveal the pathological changes and therefore has an important role in the adequate management.

Ultrasonography in the diagnosis and management of non inflammatory conditions of the hand and wrist.

High resolution ultrasonography has already become an important tool in the diagnosis and management of inflammatory arthritis of the hand and wrist but lately it has been proven to be the method of choice in the evaluation of traumatic lesions of tendons, annular pulleys, nerves, and ligaments and at the same time in detecting foreign bodies. The objective of this paper is to review and describe the current knowledge on these US findings and to highlight the ultrasonography role in the evaluation of non-inflammatory conditions of the hand and wrist.