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Musculoskeletal (MSK) sarcoidosis presents with a variety of clinical phenotypes. Four subtypes of MSK sarcoidosis have been identified to date Lofgren syndrome, chronic sarcoid arthritis, osseous sarcoidosis, sarcoid myopathy. Each subtype has been reported with varying incidence mainly due to lack of universal classification criteria.
We performed a retrospective chart review of patients with MSK sarcoidosis at a single academic center between January 2000 and December 2014. Descriptive statistics were used to describe the proportion of patients with sarcoidosis who had the 4 MSK syndromes of interest, demographic characteristics and therapeutic agents used.
A cohort of 58 patients with MSK manifestations were identified among 1016 patients with sarcoidosis. Frequency of subtypes include Lofgren syndrome 46.6%, osseous sarcoidosis 25.9%, chronic sarcoid arthritis 24.1% and sarcoid myopathy 6.9%. The cohort was predominantly female (43/58 patients, 74%) and Caucasian (48/58 patients, 82.8%). check details Mean age was 47.2years. One patient had overlap of osseous sarcoidosis and chronic sarcoid arthritis, another patient initially had Lofgren syndrome and later developed chronic sarcoid arthritis. Sarcoid myopathy patients presented with myalgia more often than muscle weakness.
We identified a large cohort of MSK sarcoidosis and determined the prevalence of all 4 subtypes. In patients who do develop MSK manifestations of sarcoidosis, they are commonly a part of the initial presentation of sarcoidosis. There is an unmet need to establish standardized classification criteria for the 4 MSK sarcoidosis syndromes.
We identified a large cohort of MSK sarcoidosis and determined the prevalence of all 4 subtypes. In patients who do develop MSK manifestations of sarcoidosis, they are commonly a part of the initial presentation of sarcoidosis. There is an unmet need to establish standardized classification criteria for the 4 MSK sarcoidosis syndromes.
Interleukin (IL)-36, including IL-36α, IL-36β, and IL-36γ in the IL-1 family, are agonists of their receptors. IL-36 expression is associated with inflammation, including lung infection in humans. However, there is no information on its role in the inflammation of different types of chronic obstructive pulmonary disease (COPD).
This study focused on the sputum IL-36α, IL-36β, and IL-36γ levels in stable COPD patients and their relationship with lung function and other cytokines in different inflammatory types of COPD patients.
Sputum specimens were collected from 73 stable COPD patients and 20 age- and gender-matched healthy controls. The levels of sputum IL-36α, IL-36β, and IL-36γ and other cytokines were quantified and sputum cells were characterized. The potential relationship between the levels of sputum IL-36α, IL-36β, or IL-36γ and lung functional measures, inflammatory cells, and cytokines was analyzed.
In comparison with the healthy controls, sputum IL-36α and IL-36γ levels significantly increased in COPD (106.8pg/mL vs. 76.9pg/mL P=.001, 397.9pg/mL vs. 359.5pg/mL P=.006). The sputum IL-36α and IL-36γ levels were significantly higher in the neutrophilic and mixed granulocytic types than that in the eosinophilic and paucigranulocytic types of COPD patients. The sputum IL-36α levels were positively correlated with sputum IL-36γ levels and the numbers of sputum neutrophils, and the sputum IL-36γ levels were positively correlated with the numbers of sputum lymphocytes in COPD patients.
Elevated levels of sputum IL-36α and IL-36γ were detected in COPD patients and may provide insights into the inflammatory pathways in neutrophilic COPD.
Elevated levels of sputum IL-36α and IL-36γ were detected in COPD patients and may provide insights into the inflammatory pathways in neutrophilic COPD.
As part of network-specific neurodegeneration, changes in cerebellar gray matter (GM) volume and impaired cerebello-cerebral functional networks have been reported in Alzheimer disease (AD). Compared with healthy controls, a volume loss in the cerebellum has been observed in patients with continuum of AD. However, little is known about the anatomical or functional changes in patients with clinical AD but no brain amyloidosis. We aimed to identify the relationship between cerebellar volume and dementia conversion of amyloid-negative mild cognitive impairment (MCI).
This study was a retrospective cohort study of patients over the age 50 years with amyloid-negative amnestic MCI who visited the memory clinic of Asan Medical Center with no less than a 36-month follow-up period. All subjects underwent detailed neuropsychological tests, 3 T brain magnetic resonance imaging scans including three-dimensional T1 imaging, and fluorine-18[F
]-florbetaben amyloid positron emission tomography scans. A spatially unbiased atlas template of the cerebellum and brainstem was used for analyzing cerebellar GM volume.
During the 36months of follow-up, 39 of 107 (36.4%) patients converted to dementia from amnestic MCI. The converter group had more severe impairments in all visual memory tasks. In terms of volumetric analysis, reduced crus I/II volume adjusted with total intracranial volume, and age was observed in the converter group.
Significant cerebellar GM atrophy involving the bilateral crus I/II may be a novel imaging biomarker for predicting dementia progression in amyloid-negative amnestic MCI patients.
Significant cerebellar GM atrophy involving the bilateral crus I/II may be a novel imaging biomarker for predicting dementia progression in amyloid-negative amnestic MCI patients.
Systemic lupus erythematosus (SLE) involves kidney damage, and the inflammasome-caspase-1 axis had been demonstrated to promote renal pathogenesis. The current study was designed to explore the function of Aim2 in SLE.
Female WT, Aim2
, Aim2
Ifnar1
, Aim2
Rag1
, and Asc
mice at 8-10 weeks of age received one intraperitoneal injection of 500μl pristane or saline, and survival was monitored twice a week for 6 months.
The absence of Aim2 but not Asc led to enhanced SLE in pristane-injected mice. Increased immune cell infiltration and type I interferon (IFN-I) signatures in the kidneys of Aim2
mice coincided with lupus severity, which was alleviated by blockade of Ifnar1-mediated signal. Adaptive immune cells were also involved in the glomerular lesions of Aim2
mice after pristane challenge. Importantly, even in the absence of pristane, plasmacytoid dendritic cells in the kidneys of Aim2
mice were significantly increased compared with control animals. Accordingly, transcriptome analysis revealed that Aim2 deficiency led to enhanced expression of IFN-I-induced genes in the kidney even at an early developmental stage.
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