The Risk of Presarcopenia Is Increased Among Female Patients With Primary Sjögren's Syndrome.

OBJECTIVES: Sarcopenia is a progressive and generalized loss of muscle mass and function. The aim of this study was to evaluate the frequency of sarcopenia among patients with primary Sjögren's syndrome (SS) and the factors related with sarcopenia. METHODS: Forty-four female patients with primary SS and 44 female control subjects were included in this cross-sectional study between February and August 2019. Sarcopenia was evaluated by the handgrip test, Skeletal Muscle Mass Index, and gait speed test. RESULTS: Eleven patients (25.0%) had presarcopenia in the SS group and 2 (4.5%) in the control group (p = 0.007). Compared with control subjects, SS patients had lower results of hand grip and gait speed tests (p = 0.005 and p < 0.001, respectively). According to the Mini Nutritional Assessment Short Form, patients with presarcopenia had higher risk of malnutrition compared with patients without sarcopenia (p = 0.043). Patients with presarcopenia had higher scores in the European League Against Rheumatism Sjögren's Syndrome Patient-Reported Index pain domain and patient visual analog scale for global disease activity compared with patients without sarcopenia (p = 0.044 and p = 0.036, respectively). In multivariate regression analysis, European League Against Rheumatism Sjögren's Syndrome Patient-Reported Index pain was associated with hand grip strength (p = 0.016, R2 = 0.13) and Mini Nutritional Assessment Short Form was associated with Skeletal Muscle Mass Index (p = 0.005). CONCLUSIONS: Risk of sarcopenia is increased in patients with SS. Pain and malnutrition may contribute to presarcopenia. Evaluating pain and patient's global disease activity may help physicians to determine patients with increased risk of sarcopenia. Controlling disease activity and pain and preventing malnutrition may reduce the risk of development of sarcopenia.

Sarcopenia in rheumatoid arthritis: Is it a common manifestation?

OBJECTIVE: To evaluate the presence of sarcopenia in patients with rheumatoid arthritis (RA). METHOD: This cross-sectional study included 100 patients with RA and 100 gender-matched healthy individuals. Sarcopenia was assessed by performing tests evaluating muscle strength, muscle mass, and physical performance, using the criteria determined by The European Working Group on Sarcopenia. Sarcopenia is defined as a decrease in muscle strength and muscle mass. On the other hand, presarcopenia is defined as a decrease in muscle strength with a normal muscle mass. RESULTS: The participants comprised of 70 females and 30 males. The frequency of presarcopenia was 35% in the RA group and 9% in the control group (P < .001). Results of handgrip and gait speed tests were lower in the RA group than in the healthy control group (P = .002 and P < .001, respectively). Presarcopenia was seen at higher rates among female and older patients, and patients with longer disease duration. Disease activity scores were higher in patients with presarcopenia than in patients without sarcopenia (P < .05). In multivariate regression analysis for presarcopenia; a statistically significant association was found between handgrip test results and age, gender, and disease activity (P < .001, R2  = .62). CONCLUSIONS: Longer disease duration and higher disease activity may provoke the development of sarcopenia due to chronic inflammation in patients with RA. Physicians should be aware of the development of sarcopenia during the course of disease and take into account the preservative and preventive methods against sarcopenia by encouraging them about exercise along with controlling disease activity.