Xanthomatous erosive arthritis: A new disease entity?

alexandrossfakianakis shared this article with you from Inoreader Xanthomatous erosive arthritis: A new disease entity? via Pediatric Blood & Cancer View on Web

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Concurrence of a kinase‐dead BRAF and an oncogenic KRAS gain‐of‐function mutation in juvenile xanthogranuloma

alexandrossfakianakis shared this article with you from Inoreader Concurrence of a kinase‐dead BRAF and an oncogenic KRAS gain‐of‐function mutation in juvenile xanthogranuloma via Pediatric Blood & Cancer View on Web

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Acute In Vitro and In Vivo Effects of Dexamethasone in the Vocal Folds: a Pilot Study

alexandrossfakianakis shared this article with you from Inoreader Acute In Vitro and In Vivo Effects of Dexamethasone in the Vocal Folds: a Pilot Study via The Laryngoscope Atrophy has been reported following dexamethasone injection into the vocal folds. Dexamethasone increased MuRF-1 gene expression in TA myoblasts. A single injection of dexamethasone, however, did not alter atrogene expression, TA morphology, or epithelial thickness in vivo. Objectives/Hypothesis Glucocorticoids (GC)s are commonly employed to treat vocal fold (VF) pathologies. However, VF atrophy has been associated with intracordal GC injections. Dexamethasone-induced skeletal muscle atrophy is well-documented in other tissues and believed to be mediated by increased muscle proteolysis via upregulation of Muscle Ring Finger (MuRF)-1 and Atrogin-1. Mechanisms of dexamethasone-mediated VF atrophy have not been described. This pilot study employed in vitro and in vivo models to investigate the effects of dexamethasone on VF epithelium, thyroarytenoid (TA) muscle, and TA-derived myoblasts. We hypothesized that dexamethasone will increase atrophy-associated gene expression in TA muscle and myoblasts and decrease TA muscle fiber size and epithelial thickness. Study Design In vitro, pre-clinical. Methods TA myoblasts were isolated from a female Sprague–Dawley rat and treated with 1 μM dexamethasone for 24-h. In vivo, 15 New Zealand white rabbits were randomly assigned to three treatment groups: (1) bilateral intracordal injection of 40 μL dexamethasone (10 mg/ml; n = 5), (2) volume-matched saline (n = 5), and (3) untreated controls (n = 5). Larynges were harvested 7-days post-injection. Across in vivo and in vitro experimentation, MuRF-1 and Atrogin-1 mRNA expression were measured via RT-qPCR. TA muscle fiber cross-sectional area (CSA) and epithelial thickness were also quantified in vivo. Results Dexamethasone increased MuRF-1 gene expression in TA myoblasts. Dexamethasone injection, however, did not alter atrophy-associated gene expression, TA CSA, or epithelial thickness in vivo. Conclusion Dexamethasone increased atrogene expression in TA myoblasts, providing foundational insight into GC induced atrophic gene transcription. Repeated dexamethasone injections may be required to elicit atrophy in vivo. Level of Evidence N/A Laryngoscope, 2022 View on Web

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Spatial‐temporal dynamics and time series prediction of HFRS in mainland China: a long‐term retrospective study

alexandrossfakianakis shared this article with you from Inoreader Spatial‐temporal dynamics and time series prediction of HFRS in mainland China: a long‐term retrospective study via Journal of Medical Virology Abstract Hemorrhagic fever with renal syndrome (HFRS) is highly endemic in mainland China. The current study aims to characterize the spatial-temporal dynamics of HFRS in mainland China during a long-term period (1950-2018). A total of 1,665,431 cases of HFRS were reported with an average annual incidence of 54.22 cases/100,000 individuals during 1950-2018. The joint regression model was used to define the global trend of the HFRS cases with an increasing-decreasing-slightly increasing-decreasing-slightly increasing trend during the 68 years. Then spatial correlation analysis and wavelet cluster analysis were used to identify four types of clusters of HFRS cases located in central and northeastern China. Lastly, the Prophet model predicts that 14,223 cases of HFRS will occur in mainland China during 2019-2038. Our findings will help reduce the knowledge gap on the transmission dynamics and distribution patterns of the HFRS in mainland China and facilitate to take rel evant preventive and control measures for the high-risk epidemic area. This article is protected by copyright. All rights reserved. View on Web

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Wound healing in endoscopic sinus surgery ‐ Phase 1 clinical trial evaluating the role of Chitogel with adjuvants

alexandrossfakianakis shared this article with you from Inoreader Wound healing in endoscopic sinus surgery ‐ Phase 1 clinical trial evaluating the role of Chitogel with adjuvants via Clinical Otolaryngology Abstract Background & Objectives Ostial stenosis and persistent inflammation are the main reasons for revision endoscopic sinus surgery (ESS). Post-operative (PO) dressings can improve PO wound healing and patient outcomes after ESS. This study aimed to determine the safety and efficacy of Chitogel, with and without Deferiprone (Def) and Gallium Protoporphyrin (GaPP), as a promoter of wound healing to improve surgical outcomes. Design, Setting & Outcome A double-blinded, randomized control human clinical trial was conducted in patients undergoing ESS as treatment for CRS. Participants underwent functional endoscopic sinus surgery (1) or FESS with drill out (DO) as required and were randomised to receive test product Chitogel, Chitogel in combination with Def or Def-GaPP versus no packing (control). Patients were followed up at 2, 6 and 12 weeks PO, outcome scores such as SNOT-22, VAS and LKS, pre and post-surgery (12 weeks) were compared. Results 79 patients completed the study, there was a significant reduction in SNOT-22 score and improvement of VAS at 12-week in patients treated with Chitogel compared to control (p<0.05). In those patients, the mean ostium area for the Chitogel and the Chitogel + Def + GaPP groups were higher across all 3 sinuses compared to the no-treatment control group, without statistical significance. Sphenoid sinus ostium was significantly more patent in patients treated with Chitogel compared to control at the 12-week time point (p < 0.05). Conclusion Chitogel as a post-operative dressing after ESS results in the best patient reported symptom scores and objective measurements. The combination of Def and GaPP to Chitogel though proving safe, had no effect on the ostium patency or mucosal healing. View on Web

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Comparison of clinical features and surgical outcomes between hypopnea‐ and apnea‐predominant obstructive sleep apnea

alexandrossfakianakis shared this article with you from Inoreader Comparison of clinical features and surgical outcomes between hypopnea‐ and apnea‐predominant obstructive sleep apnea via Clinical Otolaryngology Abstract Objectives This study is aimed to investigate the differences in the clinical features and surgical outcomes between hypopnea- and apnea-predominant obstructive sleep apnea (OSA). Design Cohort study Setting Single tertiary care center Participants This study included 190 patients with OSA who underwent multilevel upper airway surgery between September 2012 and September 2021. The patients were divided into two groups according to the proportion of each respiratory event: hypopnea-predominant (n = 102) and apnea-predominant (n = 88). Main outcome measures The primary outcome measure was the percentage improvement in the apnea-hypopnea index (AHI) from baseline AHI after surgery. Results The apnea-predominant group included more male patients and had higher AHI, respiratory disturbance index (RDI), and oxygen desaturation index (ODI) than the hypopnea-predominant group. Both groups showed significant improvements in AHI, apnea index, RDI, supine AHI, REM AHI, non-REM AHI, ODI, lowest O2 saturation, and Epworth Sleepiness Scale scores following the surgery. Notably, hypopnea index increased after surgery in the apnea-predominant OSA group. Although the improvement in the absolute value of AHI by surgery was significantly greater in the apnea-predominant group than in the hypopnea-predominant group, the two groups showed no significant difference in the percentage improvement in AHI from baseline AHI. Conclusion Patients with apnea-predominant OSA had more severe disease than those with hypopnea-predominant OSA; however, surgical outcomes, as evaluated by percentage AHI improvement, were comparable between the two groups. In addition, multilevel upper airway surgery may induce the transition from apnea to hypopnea in patients with apnea-predominant OSA. View on Web

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