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Neglected extra-articular manifestations in rheumatoid arthritis patients with normal body mass index: reduced skeletal muscle overlapping overfat.

ABSTRACT: Background: Chronic inflammation in rheumatoid arthritis (RA) can induce reduced muscle mass (myopenia) and ectopic fat deposition probably showing normal body mass index (BMI). We aimed to investigate their body composition (BC) characteristics and clinical significance.

Methods: BMI and BC were collected in consecutive RA patients and control subjects. Myopenia was defined by appendicular skeletal muscle mass index (ASMI) ?7.0?kg/m² in men and ?5.7?kg/m² in women. Overfat was defined by body fat percentage (BF%) as ?25% for men and ?35% for women.

Results: There were 620 RA patients (57.6% with normal BMI) and 2537 control subjects (62.5% with normal BMI) recruited. After 1:1 age and sex matching with control subjects, RA patients with normal BMI (n?=?240) showed significantly higher prevalence of myopenia (43.3% versus 22.1%) and overfat (19.2% versus 7.1%) as well as myopenia overlapping overfat (17.1% versus 3.3%). In all RA patients with normal BMI (n?=?357), there were 18.2% patients with myopenia overlapping overfat who had the worst radiographic scores and highest rates of previous glucocorticoid treatment and hypertension. Compared with those without, normal BMI RA patients with previous glucocorticoid treatment (24.4% versus 10.3%) or hypertension (27.8% versus 13.6%) had a higher rate of myopenia overlapping overfat. Previous glucocorticoid treatment [odds ratio (OR)?=?2.844, 95% confidence interval (CI) 1.441-5.614] and hypertension (OR?=?2.452, 95% CI 1.283-4.685) were potential associated factors of myopenia overlapping overfat in RA patients with normal BMI.

Conclusion: Myopenia overlapping overfat is an important extra-articular manifestation which should not be ignored in RA patients with normal BMI, especially with glucocorticoid treatment and hypertension.

SUBMITTER: Lin JZ

PROVIDER: S-EPMC7705189 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Neglected extra-articular manifestations in rheumatoid arthritis patients with normal body mass index: reduced skeletal muscle overlapping overfat.

Lin Jian-Zi JZ Chen Chu-Tao CT Ma Jian-Da JD Mo Ying-Qian YQ Li Qian-Hua QH Chen Le-Feng LF Yang Ze-Hong ZH Cheng Wan-Mei WM He Xiao-Ling XL Zheng Dong-Hui DH Dai Lie L

Therapeutic advances in chronic disease 20201127

<h4>Background</h4>Chronic inflammation in rheumatoid arthritis (RA) can induce reduced muscle mass (myopenia) and ectopic fat deposition probably showing normal body mass index (BMI). We aimed to investigate their body composition (BC) characteristics and clinical significance.<h4>Methods</h4>BMI and BC were collected in consecutive RA patients and control subjects. Myopenia was defined by appendicular skeletal muscle mass index (ASMI) ⩽7.0 kg/m<sup>2</sup> in men and ⩽5.7 kg/m<sup>2</sup> in w ...[more]

PMID: 33294150

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Project description:BACKGROUND:METARTHROS (Metabolic impact on joint and bone disease) is a nationwide German network to investigate the overlap between inflammatory and metabolic diseases. The objective of this study was to compare the body mass index (BMI) distribution in patients with early and established rheumatoid arthritis (RA) with data from the general population, and to evaluate the association of BMI with patient characteristics and clinical markers. METHODS:The BMI distribution was examined with data collected at inclusion of patients in the early arthritis cohort CAPEA, the biologics register RABBIT, and the National database of the German Collaborative Arthritis Centers. A data source with a representative sample of the German population (German Ageing Survey) was used as a comparator. BMI categories of <18.5 kg/m(2) (underweight), 18.5 to <25 kg/m(2) (normal weight), 25 to <30 kg/m(2) (overweight), and ?30 kg/m(2) (obese) were used. Patients were stratified by age and sex, and compared to controls from the German Ageing Survey. Associations between BMI and markers of disease activity were analysed with non-parametric tests and linear models. RESULTS:Data from 1207 (CAPEA), 12,230 (RABBIT), and 3424 (National database) RA patients and 6202 population controls were evaluated. The mean age was 56, 56, 62, and 62 years, respectively, the mean disease duration was 13 weeks, 9.9 years, and 13.5 years, respectively, and the mean disease activity score (DAS28) was 5.1, 5.2, and 3.1, respectively. In all RA cohorts, obesity was more frequent (23.8 %, 23.4 %, 21.4 %, respectively) than in controls (18.2 %). This applied to all age groups <70 years, was independent of disease duration, and was more pronounced in females. In all cohorts, the age at RA onset was associated with BMI, being higher in overweight/obese patients compared to normal-weight patients. Current smoking was negatively associated with BMI. Linear analyses revealed increased erythrocyte sedimentation rate (ESR) values in underweight and obese females, and an increasing disparity between tender joint counts (TJCs) and swollen joint counts (SJCs) in higher BMI categories. CONCLUSIONS:Compared to the general population, a higher prevalence of obesity was observed in all RA cohorts. The dominance of obesity in females and the different behaviour of disease activity markers in relation to the BMI in females indicate that additional parameters need to be considered when analysing the impact of obesity on inflammation in RA.

Project description:Cutaneous manifestations are fairly common in rheumatoid arthritis (RA) and they can help in early diagnosis, prompt treatment, and hence reduced morbidity from the disease.The objective of the present study was to find out the different patterns of dermatoses in a group of patients with RA from Eastern India.Consecutive patients fulfilling the American Rheumatism Association 1987 revised criteria for the classification of RA and who had different dermatoses were included in this cross-sectional study done over a period of 8 years in a tertiary care hospital in Eastern India. Thorough clinical examination and appropriate laboratory investigations were performed as needed. Data were recorded in a predesigned schedule, and appropriate statistical analysis was done.We studied 111 evaluable patients with an age range of 19-71 years and a female to male ratio of 7:1. The mean disease duration of RA was 6.5 years. Cutaneous infections as a group was the most common mucocutaneous manifestation (34.2%) followed by xerosis including ichthyotic skin changes (27%), pigmented purpuric dermatoses (14.4%), leg ulcer (9.9%), periungual telangiectasia (9.9%), rheumatoid nodules (RNs) (8.1%), purpura and ecchymoses (7.2%), small vessel vasculitis in (7.2%), corn and callosities (6.3%), palmar erythema (4.5%), and neutrophilic dermatosis (4.5%). Raynaud's phenomenon was found in 3.6% patients and panniculitis in (3.6%) patients. Rheumatoid factor (RF) and anti-cyclic citrullinated peptides antibody were positive in 74.8% and 88.3% patients, respectively. No statistically significant difference of incidence of leg ulcer, small vessel vasculitis, RN, or Raynaud's phenomenon could be noted between RF positive and negative groups.Being an institution-based study, the study findings may not reflect the true situation in the community which remained a limitation of this study.While some of the features of this study were analogous to Western data, other features showed discordance which may be due to ethnic variations among the patients with RA.

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Neglected extra-articular manifestations in rheumatoid arthritis patients with normal body mass index: reduced skeletal muscle overlapping overfat.

Publications

Neglected extra-articular manifestations in rheumatoid arthritis patients with normal body mass index: reduced skeletal muscle overlapping overfat.

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