Background: Rheumatoid arthritis (RA) is a chronic autoimmune disease that causes inflammation and deformity of the joints. Objectives: The study have two purposes: (1) Identify the sensitivity of anti - CCP2 antibodies in rheumatoid arthritis. (2) Identify the correlation between anti - CCP2 antibodies and clinical manifestations, laboratory features of rheumatoid arthritis. Subjects and method: The study was carried out on 70 patients with rheumatoid arthritis from March to July 2006 in rheumatology department at Bach Mai hospital. All they were diagnosed according to the criteria of American College of Rheumatology 1987. Results: Results of study showed that: (1) The sensitivity of anti - CCP2 antibodies is 67.1% (2) The sensitivity of anti - CCP2 antibodies in patients with rheumatoid arthritis is 67.1 % and is as high as the sensitivity of rheumatoid factor. In early stage of disease (the duration of disease under 12 months) the sensitivity of anti - CCP2 antibodies is higher than rheumatoid factor (70% versus 57.5%). There are no significant differences between the group having anti - CCP2 antibodies and the group who did not have anti - CCP2 anti- bodies in any stages of disease about Ritchie index, DAS - 28 index, X - rays, erythrocyte sedimentation rate in the first hour, CRP ratio. Conclusions: The sensitivity of anti - CCP2 antibodies in patients with rheumatoid arthritis is 67.1 %. There is the relation between anti - CCP2 antibodies and the severity of the inflammation and the severity of X - rays.
Arthritis ; Rheumatoid/ pathology ; epidemiology ; Antibodies/ adverse effects

OBJECTIVE: To determine the prevalence of depression and anxiety in patients with psoriatic arthritis (PsA), to investigate whether there is a difference in the prevalence of depression and anxiety between PsA and rheumatoid arthritis (RA) patients and to identify associated risk factors for depression and anxiety in PsA patients. METHODS: PsA and RA patients who visited Department of Rheumatology and Clinical Immunology in Peking University First Hospital from May 2018 to Sep 2019 were recruited. Self-rating anxiety scale and self-rating depression scale were surveyed and compared between PsA and RA patients. Demographics and clinical features including age, gender, disease duration, disease activity score, psoriasis area and severity index (PASI), and medical application were collected. Power Doppler and grey-scale ultrasound of joints, tenosynovitis and enthesis were performed. Multivariate Logistic regression was used to identify the factors associated with mood disorders and the odds ratio of depression and anxiety between the PsA and RA patients. RESULTS: Among the 114 enrolled PsA patients, 37 (32.5%) had mood disorders, in which 36 (31.6%) with depression and 15 (13.2%) with anxiety. Compared with 201 RA patients, PsA patients showed greater odds for depression [adjusted OR (95%CI): 2.7 (1.1-6.4)]. Depression was more often observed in the PsA than in the RA patients (31.6% vs. 18.9%, P=0.011). The similar trend for anxiety was also observed, although the difference was insignificant (13.2% vs. 8.5%, P=0.185). Age (OR=0.95, P=0.008), psoriasis duration (OR=0.94, P=0.018), pain visual analogue scale (OR=1.47, P=0.011), PASI score (OR=1.07, P=0.007) and presence of ultrasound enthesitis (OR=4.13, P=0.009) were identified as factors associated with depression in the PsA patients. PASI score (OR=1.07, P=0.001) was identified as associated factor for anxiety in the PsA patients. CONCLUSION The prevalence of depression and anxiety is elevated in PsA patients. Depression is significantly more prevalent in PsA patients than in RA patients. Younger age, shorter psoriasis duration, worse pain and presence of ultrasound enthesitis are associated with depression, while severe psoriasis rash is associated with both depression and anxiety in PsA patients.
Anxiety/etiology* ; Arthritis, Psoriatic/epidemiology* ; Depression/etiology* ; Enthesopathy ; Humans ; Prevalence

BACKGROUND: Reports on the prevalence of psoriatic arthritis (PsA) among Chinese patients with psoriasis are very limited. This study, conducted by rheumatologists, estimated the prevalence of PsA in a large number of Chinese patients with psoriasis. METHODS: Consecutive patients with a confirmed diagnosis of psoriasis attending nine dermatology clinics in five hospitals were recruited. All psoriasis patients were asked to complete a questionnaire comprising 16 questions to identify possible cases of PsA. All patients with one or more positive answers to the questionnaire were evaluated by two experienced rheumatologists. RESULTS: A total of 2434 psoriasis patients, including 1561 males and 873 females, were enrolled. Both the questionnaire and rheumatologists' examinations were completed in the dermatology clinics. The results identified 252 patients with PsA, comprising 168 males and 84 females. The overall prevalence of PsA among psoriasis patients was 10.4% (95% confidence interval [95% CI], 9.1%-11.7%). By sex, the prevalence was 10.8% (95% CI, 9.2%-12.5%) for males and 9.6% (95% CI, 7.7%-11.9%) for females and there was no significant sex difference in the prevalence of PsA (P = 0.38). Of the 252 PsA patients, 125 (49.6%, 95% CI, 41.3%-59.1%) were newly diagnosed by rheumatologists. Consequently, the prevalence of undiagnosed PsA among psoriasis patients was 5.2% (95% CI, 4.4%-6.2%). CONCLUSION The prevalence of PsA in the Chinese population with psoriasis is about 10.4%, which is almost double that of previous reports in the Chinese population, but lower than that in Caucasians.
Humans ; Female ; Male ; Arthritis, Psoriatic/epidemiology* ; Rheumatologists ; Prevalence ; East Asian People ; Psoriasis/epidemiology*

Humans ; Cross-Sectional Studies ; East Asian People ; Psoriasis/epidemiology* ; Arthritis, Psoriatic/epidemiology* ; Registries ; Surveys and Questionnaires

Juvenile rheumatoid arthritis (JRA) is basically the same disease as rheumatoid arhritis in the adult. However juvenile rheumatoid arthritis has many features that differ from rheumatoid arthritis in the adult, and since the onset of the disease occurs before the age of puberty, variable alterations in growth may occur. In this study, fifty cases of juvenile rheumatoid arthritis treated at Severance Hospital from January 1970 to December 1977 were analysed clinically and the following results were obtained. 1. By classification, the polyarticular type (46%) was most frequent, followed by the pauciarticular type (34%) and systemic type (20%) in order. 2. The most frequent joint affected was the knee (82%) followed by the ankle (60%), hand (22%), wrist (20%), etc. 3. The extra-articular manifestations on admission were high fever (40%), rash (16%), carditis (14%), lymphadenopathy (14%), etc. 4. Laboratory findings on admission showed increased ESR (88%), positive rheumatoid factor (15.5%), positive ANA (16.6%), etc. 5. Clinical symptoms were managed medically and surgically with aspirin, salicylates and steroids, physical therapy, and synovectomy.
Adolescent ; Arthritis, Juvenile Rheumatoid/classification ; Arthritis, Juvenile Rheumatoid/epidemiology* ; Child ; Child, Preschool ; Female ; Follow-Up Studies ; Human ; Korea ; Male

This study was undertaken to evaluate the clinical features of a cohort of Behcet's disease (BD) followed up from January 1997 to July 2001 in Yongdong districts in Korea, and to compare the results with the literature. Overall features of clinical manifestations were similar to those described in the literature. However, the frequency of gastrointestinal (GI) ulcerations was much higher than those of other Korean studies. The Korean studies including ours revealed a lower frequency of vascular lesions and epididymitis compared with studies of other countries. The most common site and pattern of inflammatory arthritis were knees and monoarticular involvement, respectively. In addition, in most patients, the ocular lesions involved the posterior uveal tract, and the terminal ileum and cecum were the most common sites of GI involvement. Patients with ocular lesions or GI lesions showed a good prognosis during the follow-up. The HLA-B51 antigen was positive in 50.7% of patients, and it was more commonly found in patients with a familial BD.
Adult ; Age Factors ; Arthritis/*epidemiology ; Behcet Syndrome/*epidemiology ; Cohort Studies ; Eye Diseases/epidemiology ; Female ; Follow-Up Studies ; Gastrointestinal Diseases/epidemiology ; Humans ; Korea ; Male ; Middle Aged ; Sex Factors

OBJECTIVETo study the prevalence rate of rheumatoid arthritis in Zhuang nationality population of Nanning, Guangxi.

METHODSA total of 7407 people with Zhuang nationality, aged 16 and over were surveyed. Questionnaire was administered to each subject under survey, while X-ray and serum rheumatoid factor were carried out to all those who gave positive answers. Physical examinations were done to the suspicious cases by experts on rheumatism.

RESULTSwere compared with those in 6826 people of Han ethnicity living in the same district.

RESULTSThe prevalence rates of rheumatoid arthritis in Zhuang nationality population was 0.27% when comparing to the Han population which was 0.28% (P > 0.05). Rates of awareness on rheumatoid arthritis in Zhuang and Han population were 5.0% and 10.5% (P > 0.05). After the diagnosis of rheumatoid arthritis was made and among patients who had received the treatment, the rates were 0% vs. 5.25%.

CONCLUSIONThe prevalence rate of rheumatoid arthritis in Zhuang nationality population of Nanning, Guangxi was not significantly different than that in Han ethnic group. However, the rates on awareness and the treatment of rheumatoid arthritis were still under satisfaction.

Adult ; Aged ; Arthritis, Rheumatoid ; epidemiology ; Asian Continental Ancestry Group ; ethnology ; China ; epidemiology ; Female ; Humans ; Male ; Middle Aged ; Prevalence

OBJECTIVE: To investigate the population distribution of cervical spine instability in rheumatoid arthritis (RA) patients, and to analyze the clinical characteristics in RA patients with cervical spine instability. METHODS: A total of 439 RA patients who had completed cervical spine X-ray examination from Department of Rheumatology and Immunology of Peking University Shenzhen Hospital and Peking University Third Hospital from August 2015 to March 2019 were enrolled. The clinical data, laboratory data and cervical radiographic data were collected and analyzed by t-test, rank sum test and Chi-square test to clarify the clinical characteristics in the RA patients with cervical spine instability. RESULTS: Of the 439 RA patients, 80.9% (355/439) were female, with an average age of (52.9±13.9) years, a median duration of the disease was 60 months, the shortest history was 2 weeks, and the longest history was up to 46 years. 29.6% (130/439) of the RA patients showed cervical spine instability. Among them, 20 RA patients were complicated with two different types of cervical instability, the atlantoaxial subluxation (AAS) accounted for 24.6% (108/439), the vertical subluxation (VS) accounted for 7.3% (32/439) and the subluxial subluxations (SAS) accounted for 2.3% (10/439). The patients with cervical spine instability had a longer duration of disease [120 (36, 240) months vs. 48 (12, 120) months], a higher proportion of peripheral joint deformity (56.9% vs. 29.9%), and a higher visual analog scale (VAS) measuring general health score (4.89±2.49 vs. 3.93±2.38), a lower hemoglobin [(111.31±19.44) g/L vs. (115.56±16.60) g/L] and a higher positive rate of anti-cyclic citrullina-ted peptide (CCP) antibody (90.8% vs. 76.6%). There were no significant differences in gender, age, number of swollen joints, number of tenderness joints, erythrocyte sedimentation rate, rheumatoid factor level, 28-joint disease activity score, positive rate of anti keratin antibody, duration of glucocorticoid use and duration of disease modifying anti-rheumatic drugs use between the two groups. CONCLUSION In the study, 29.6% of the RA patients showed cervical spine instability. RA patients with cervical spine instability had a long-term disease, a higher proportion of peripheral joint deformity, a higher VAS measuring general health score, a lower hemoglobin and a higher positive rate of anti-CCP antibody.
Adult ; Aged ; Arthritis, Rheumatoid/epidemiology* ; Autoantibodies ; Cervical Vertebrae/diagnostic imaging* ; Demography ; Female ; Humans ; Joint Instability/epidemiology* ; Middle Aged

OBJECTIVE: To investigate the clinical and serological features of rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE) overlap syndrome (Rhupus syndrome). METHODS: We retrospectively reviewed the medical records of 21 patients with Rhupus syndrome who were hospitalized at Department of Rheumatology and Immunology, People's Hospital of Xinjiang Uygur Autonomous Region between January 2010 and January 2018. We compared the joint involvement, autoantibodies and clinical manifestations of Rhupus syndrome with 81 cases of RA-alone and 51 cases of SLE-alone. RESULTS: In 21 patients with Rhupus syndrome, there are 3 males and 18 females. Compared with the SLE-alone group, the patients with Rhupus syndrome were older [(49.43±11.66) vs. (40.59±12.73), P=0.008]. The median age of the patients with Rhupus syndrome at RA onset was significantly younger than that of the RA-alone patients [(32.58±11.14) vs. (43.11±11.83), P=0.010]. Of the 21 patients with Rhupus syndrome, the initial diagnosis was RA in 57% (12/21), except 2 male patients, the other 10 patients with SLE manifestations were menopause, the mean age of amenorrhea or menopause was (44.30±5.33) (36-50) years. The mean interval between the onset of SLE and RA was 10.83 years. Two patients started with SLE manifestations. Moreover, both diseases simultaneously developed in 33.3% of the patients. Except one male patient, 3 patients were in menopause stage when RA and SLE appeared. The positive rate of specific antibody Rhupus syndrome was similar to that of RA. Renal damage was relatively rare in SLE related manifestations, but the incidence of interstitial lung disease was higher. There were no significant differences in the prevalence of complements C3 and C4, antinuclear antibody (ANA), anti-double-stranded DNA (anti-dsDNA), anti-SSA or anti-SSB antibody between the Rhupus syndrome and SLE-alone group. CONCLUSION Rhupus syndrome is an overlapping syndrome in which RA and SLE coexist. Most of the diseases occur in RA and the related manifestations of RA are more serious than those of SLE. The incidence of Rhupus syndrome may be related to the change of sex hormone levels.
Adult ; Antibodies, Antinuclear ; Arthritis, Rheumatoid/epidemiology* ; Autoantibodies ; Female ; Humans ; Lupus Erythematosus, Systemic/epidemiology* ; Male ; Middle Aged ; Retrospective Studies

Rheumatoid arthritis (RA) is the most common chronic inflammatory joint disease. The prevalence of RA is between 0.5~1% and annual incidence of RA is approximately 0.2~0.4/1,000 persons. The prevalence and incidence of RA appear to have fallen in the last 50 years. Risk factors for the development of RA include genetic factors, hormonal factors, reproductive factors, environmental factors and life-style factors. The currently accepted classification scheme for RA is the 1987 American Rheumatism Association (ARA) criteria. This criteria is both sensitive and specific, but it has limitation in classifying early disease.
Arthritis, Rheumatoid* ; Classification ; Diagnosis* ; Epidemiology* ; Humans ; Incidence ; Joint Diseases ; Prevalence ; Rheumatic Diseases ; Risk Factors