Prevalencia del desarrollo de entesofito en la Protuberancia Occipital Externa en población de paraguayos / Prevalence of enthesophyte development in External Occipital Protuberance in Paraguayan population

Introducción.La Protuberancia Occipital Externa (POE) es una superficie convexa y lisa que tradicionalmente no presenta ningún tipo de irregularidades. La aparición de un entesofito en individuos ha llamado la atención de los investigadores. Objetivo.Determinar la prevalencia, longitud, edad y sexo de una exostosis en forma de gancho desarrollada a nivel de la POE. Metodología.Estudio observacional descriptivo realizado en radiografías laterales de cráneo de individuos jóvenes. De 5065 radiografías, 4017 radiografías cumplieron con los criterios. Se procedió a la detección de la presencia de un gancho óseo en la POE y su medición. Resultados.Se incluyeron personas de ambos sexos entre 13 a 45 años: 2902 mujeres y 1115 varones. De las 4017 radiografías observadas, el 67% presentó la excrecencia en la POE, con rangos desde 5 a 24 mm en longitud, 511 tenían una longitud de 5 mm o mayor, 903 entre 9 a 12 mm de longitud y 253 de 13 a 24mm. Se observó enmayor proporción en el sexo masculino que el femenino(68% vs 32%). En los individuos de 40 años y más, solo un paciente de sexo masculino mostró la presencia del entesofito. Conclusión.Se ha encontrado una alta frecuencia del desarrollo de una protuberancia ósea a nivel del POE en jóvenes y adultos jóvenesde sexo masculino. Este es el primer estudio de este tipo realizado en la población del Paraguay. Para comprender la razón del desarrollo de esta excrecencia ósea, es necesario ampliar el área de investigación. Palabras Clave:ganchos óseos;protuberancia; exostosis; entesopatía.

Introduction.The external occipital protuberance (EOP) is a smooth convex surface which commonly does not present any type of irregularities. The development of an enthesophyte in young population has attracted the attention of researchers. Objective.To determine the prevalence, size, age, and sex of individuals with bony projections that resembles a hook developed in EOP. Methodology.Descriptive observational study. 5065 lateral skull x-rays were observed. 4017 fulfilled all the criteria. The x-rays were reviewed for the presence of a bony excrescence in EOP, and they were measured. Results. From a both sexes population between 13 to 45 years old 2902 were female and 1115 were male. 67% X-rays presented the enthesophyte ranging from 5 ­24mm in length. 511 out of 1667 had an enthesophyte at or above 5 mm. There were 903 patients with an enthesophyte ranging from 9 ­12 mm in length and 254 had the protuberance ranging from 13 ­24 mm. Statistically significant range of 68% vs 32% between males and females were observed. From individuals of 40 years and above, just 1 male patient out of 32 showedthe enthesophyte. Conclusion.Significant association with the development of a bony protuberance at the POE in young and young adult male population has been found. This is the first study of this type in Paraguayan individuals. To expand the field of studies, future research is needed to better examine and understand the reason forthe development of this bony excrescence. Key words:bone hooks; protuberance;exostoses; enthesopathies.

Enthesitis in patients with psoriatic arthritis: A nationwide data from the Chinese Registry of Psoriatic Arthritis (CREPAR) / 中华医学杂志(英文版)

BACKGROUND@#The clinical features of enthesitis in patients with psoriatic arthritis (PsA) have been reported in some Western countries, but data in China are very limited. This study aimed to describe the characteristics of enthesitis in Chinese patients with PsA and compared them with those in other cohorts.@*METHODS@#Patients with PsA enrolled in the Chinese Registry of Psoriatic Arthritis (CREPAR) (December 2018 to June 2021) were included. Data including demographics, clinical characteristics, disease activity measures, and treatment were collected at enrollment. Enthesitis was assessed by the Spondyloarthritis Research Consortium of Canada (SPARCC), Maastricht ankylosing spondylitis enthesitis score (MASES), and Leeds enthesitis index (LEI) indices. A multivariable logistic model was used to identify factors related to enthesitis. We also compared our results with those of other cohorts.@*RESULTS@#In total, 1074 PsA patients were included, 308 (28.7%) of whom had enthesitis. The average number of enthesitis was 3.3 ± 2.8 (range: 1.0-18.0). More than half of the patients (165, 53.6%) had one or two tender entheseal sites. Patients with enthesitis had an earlier age of onset for both psoriasis and arthritis, reported a higher proportion of PsA duration over 5 years, and had a higher percentage of axial involvement and greater disease activity. Multivariable logistic regression showed that axial involvement (odds ratio [OR] 2.21, 95% confidence interval [CI], 1.59-3.08; P <0.001), psoriasis area and severity index (PASI) (OR: 1.03, 95% CI: 1.01-1.04; P = 0.002), and disease activity score 28-C reactive protein (DAS28-CRP) (OR: 1.25, 95% CI: 1.01-1.55; P = 0.037) were associated with enthesitis. Compared with the results of other studies, Chinese patients with enthesitis had a younger age, lower body mass index (BMI), a higher rate of positive human leukocyte antigen (HLA)-B27, more frequent dactylitis, and a higher proportion of conventional synthetic disease-modifying antirheumatic drugs' (csDMARDs) use.@*CONCLUSIONS@#Enthesitis is a common condition among Chinese patients with PsA. It is important to evaluate entheses in both peripheral and axial sites.

Diagnóstico de espondiloartrite axial em pacientes com fibromialgia / Axial spondyloarthritis diagnosis in fibromyalgia patients

Objetivo: Avaliar pacientes com fibromialgia e dor lombar, bus- cando características clínicas de espondiloatrites axiais. Méto- dos: Neste estudo transversal, cem pacientes com fibromialgia e idades entre 18 e 65 anos foram avaliados. A avaliação consis- tiu em um questionário baseado no braço clínico dos critérios Assessment of Spondyloarthritis International Society para diag- nóstico de espondiloatrites axiais e um questionário de impacto da fibromialgia (Revised Fibromyalgia Impact Questionnaire). Re- sultados: Quando o braço clínico da Assessment of Spondyloar- thritis International Society foi aplicado em pacientes com fibro- mialgia e dor lombar, 80% dos pacientes preencheram os critérios para diagnóstico de espondiloatrites axiais. As principais carac- terísticas de espondiloatrite axial foram dor lombar inflamatória, boa resposta a drogas anti-inflmatórias não esteroidais, artrite e entesite. Pacientes com critérios de espondiloatrites axiais posi- tivos apresentaram maiores níveis séricos de proteína C-reativa (p=0,00035). O valor médio do Revised Fibromyalgia Impact Ques- tionnaire para todos os pacientes avaliados foi 63,6, e não houve di- ferença entre os pacientes que preencheram os critérios e aqueles que não preencheram. Conclusão: Pacientes com fibromialgia e dor lombar frequentemente apresentam características clínicas de espondiloatrite axial, e aqueles que preencheram os crité- rios clínicos para espondiloatrites axiais também apresentaram maiores níveis séricos de proteína C-reativa.

Objective: To evaluate patients with fibromyalgia and back pain for clinical features of axial spondyloarthritis. Methods: In this cross-sectional study, one hundred fibromyalgia patients between 18 and 65 years old were assessed. The assessment consisted of a questionnaire based on the clinical arm ofthe Assessment of Spondyloarthritis International Society criteria for the diagnosis of axial spondyloarthritis and a questionnaire on the impact of fibromyalgia (Revised Fibromyalgia Impact Questionnaire). Re- sults: When the clinical arm of the Assessment of Spondyloarthri- tis International Society was applied in patients with fibromyal- gia and back pain, 80% of the patients met the clinical criteria for diagnosis of axial spondyloarthritis. The main features of axial spondyloarthritis in fibromyalgia patients were inflammatory back pain, good response to non-steroidal anti-inflammatory drugs (NSAIDs), arthritis, and enthesitis. Patients with positive axial spondyloarthritis criteria presented with higher C- reac- tive protein levels (p=0.00035). The mean value of the Revised Fibromyalgia Impact Questionnaire for all patients assessed was 63.6 and there was no difference between patients that met the criteria for axial spondyloarthritis and those who did not. Con- clusion: Patients with fibromyalgia and back pain often present clinical features of axial spondyloarthritis, and those who met the clinical criteria for axial spondyloarthritis also presented with higher levels of C-reactive protein.

Depression and anxiety in patients with psoriatic arthritis: Prevalence and associated factors / 北京大学学报(医学版)

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.

Entesis, entesopatía y espondiloartritis / Entheses, enthesopathy and spondyloarthritis

Las espondiloartritis (SpA) comprenden un grupo heterogéneo de enfermedades inflamatorias articulares que comparten varias características clínicas y de laboratorio, una fuerte tendencia a la asociación familiar dada por una susceptibilidad genética relacionada con la presencia del antígeno de histocompatibilidad HLA-B27, compromiso de las entesis, afectación predominante del esqueleto axial, artritis asimétrica de grandes articulaciones en los miembros inferiores y relación con la infección como factor desencadenante de las mismas. Las SpA incluyen varios subtipos: la artropatía psoriásica (PsA), las espondiloartritis no definidas (uSpA), la artritis asociada a enfermedades inflamatorias intestinales (EII), la artritis reactiva (ReA) y la espondilitis anquilosante (EA). La característica histopatológica fundamental de las SpA es la entesitis, la cual está dada por la inflamación patológica de las entesis comprometidas, que son los sitios de inserción de los tendones, ligamentos, fascias y cápsulas articulares al hueso; así como también el sitio de unión del cartílago al hueso subcondral.

Spondyloarthritis are a heterogeneous group of inflammatory joint diseases, which share clinic and laboratory characteristics, a strong relation to hereditary factors (mainly antigen HLA-B27), enthesesitis (most commonly affecting axial skeleton), large joints asymmetric arthritis mostly in lower limbs, and its relationship with infections as a triggering factor. Spondyloarthitis include various subtypes: Psoriatic Arthropathy (PsA), Undifferentiated Spondiloarthritis (uSpA), Arthritis related to inflammatory bowel disease (IBD), Ankylosing Spondylitis (AS) and Reactive Arthritis (ReA). Fundamental histopathologic characteristic of the Spondyloarthritis is enthesitis on the sites of attachment of tendons, ligaments, joint capsules and fascias to the bone, but also over the cartilage at the subchondral bone.