Inflammatory myopathy with anti-Golgi antibody and anti-SS-A/Ro antibody

Elevated levels of anti-Golgi antibodies: An early sign of seronegative rheumatoid arthritis

Anti-Golgi antibodies are uncommon antibodies that exhibit specific, polarized cytoplasmic staining on the Hep-2 substrate. The objective of our study was to identify the clinical and laboratory features associated with anti-Golgi antibodies. We examined 4.5 years of data from a Turkish tertiary hospital in this retrospective cohort analysis. The indirect immunofluorescence staining patterns, antinuclear antibody (ANA) titres and clinical data of all patients were obtained from the hospital record system. A total of 146,055 ANAs were detected, of which 224 patients (0.15%) exhibited anti-Golgi antibody staining. In total, 39.4% of diagnosed patients had autoimmune diseases (AIDs). Of the AIDs, 26 (46.4%) were rheumatoid arthritis (RA). This is a very high rate and another remarkable point is that 17 (65.3%) of these patients had seronegative RA. High-titre results (1 ≥ 1/320) were more common in patients with AID. Anti-Ro52 was prevalent in 50% of extractable nuclear antigen (ENA)-positive patients, making it a remarkable finding. The majority of individuals with high-titre anti-Golgi antibodies had AID, particularly RA. The majority of these patients also tested negative for anti-cyclic citrullinated peptide (anti-CCP) and rheumatoid factor (RF). Finally, high-titre anti-Golgi antibodies may be an important serologic marker for seronegative RA in the Turkish population.

Anti-golgi antibodies: Prevalence and disease association in Chinese population

OBJECTIVE

Anti-golgi antibodies (AGAs) are rarely encountered and often considered in relation to autoimmune diseases in clinical practice. This research was performed for studying the prevalence and clinical significance of AGAs in Chinese population.

METHODS

We retrospectively reviewed 22,619 laboratory reports of AGAs detected by indirect immunofluorescence (IIF) were consecutively collected from the First People's Hospital of Wenling between June 2012 and June 2017. Eight patients with AGAs were followed up for relevant clinical and laboratory characteristics.

RESULT

A total of 22,619 laboratory reports were collected. Of 19 patients with AGAs, 7 cases (all females) had autoimmune diseases (AID) and 12 cases (6 females and 6 males) had non-AID. High titer AGAs ranging from 1:1000 to 1:3200 were persistently present in AID patients, while low-titer AGAs ranging from 1:100 to 1:320 were transient in non-AID patients.

CONCLUSION

This is the first study to assess the AGA positive rate and relevant clinical manifestations in a hospitalized Chinese population. AGAs were rare and occurred in a variety of diseases. They were persistently strongly positive in AID, whereas low-titered and transient in non-AID.

Coexistence of Autoantibodies against the Golgi Complex and Ro52 Antigen in a Patient with Nonspecific Interstitial Pneumonia

Nonspecific interstitial pneumonia (NSIP) is often associated with connective tissue diseases (CTD). The diagnosis of NSIP was confirmed in a 63-year-old man by high-resolution computed tomography and an open lung biopsy. Anti-Golgi complex autoantibodies (AGA) and anti-Ro52 antibodies were simultaneously detected at high concentrations. Autoantibodies to aminoacyl-tRNA synthetases (ARS) were negative. The patient was treated with corticosteroids for six months. During the seven-year follow-up, NSIP had a slow progression and patient had not developed the clinical features of CTD. The present study potentially demonstrates that the autoimmune process elicited by AGA and/or Ro/SSA may play a role in promoting idiopathic NSIP independently of the typical ARS routes, which has not been reported thus far.