Sensitisation to House Dust Mite Component Der p 23 Is Associated with Severe Symptoms and Asthma in Allergic Rhinitis Patients.

Introduction: House dust mite (HDM) is an important source of airborne allergens in China as it contains several allergenic components that can cause allergic rhinitis (AR) and other allergic diseases. This study aimed to determine the clinical characteristics and disease severity in AR patients sensitised to different allergenic HDM components.

Methods: This was a retrospective study, which examined 129 patients who were first diagnosed with only HDM-induced AR at the Department of Allergy of Beijing Tongren Hospital from December 2019 to April 2021.

Long-term efficacy of HDM-SCIT in pediatric and adult patients with allergic rhinitis.

Background: Subcutaneous immunotherapy (SCIT) is a well-validated and effective disease modification treatment for house dust mites (HDM)-induced allergic rhinitis (AR). Long-term post-treatment comparisons in children and adults treated with SCIT have rarely been published. This study aimed to evaluate the long-term efficacy of HDM-SCIT administered under a cluster schedule in children compared to adults.

Establishing a novel 3D printing bioinks system with recombinant human collagen.

Bioinks are one of the key elements in realizing three-dimensional (3D) bioprinting. However, bioinks prepared from conventional collagen are hindered to their further applications due to concerns of collagen purity, unstable mechanical properties, and low solubility under neutralized conditions. This study aimed to develop a reliable UV-curable bioink system from a novel water-soluble recombinant human collagen (RHC).

Construction of a BMP-2 gene delivery system for polyetheretherketone bone implant material and its effect on bone formation in vitro.

Polyetheretherketone (PEEK) has been widely investigated for improving its biological inert to enable it to achieve stronger osteogenic capability and to be a promising material in implant fields. The most important mechanism that makes a successful implantation is osteointegration. Surface modification is an appropriate method to maintain the excellent mechanical properties of PEEK and simultaneously endow PEEK certain biological characters.

Omalizumab is effective in the preseasonal treatment of seasonal allergic rhinitis.

Background: To date no study has evaluated the efficacy of preseasonal omalizumab therapy with cost effective dose and at appropriate time point compared with standard medication in seasonal allergic rhinitis (SAR) patients.

Methods: This was a prospective randomized controlled open-label single-centre trial. 32 SAR patients were randomized to receive a single injection of omalizumab 300-mg approximately two weeks before start of the pollen period (PP) or medication therapy.

Upregulation of Basonuclin1 Is Associated with p63-Involved Epithelial Barrier Impairment and Type-2 Helper T-cell Inflammation in Chronic Rhinosinusitis with Nasal Polyps.

Background: Tumor protein p63 has been shown to be important for epithelial dysfunction, including epithelial barrier defects and mucosal inflammation, in the development of chronic rhinosinusitis with nasal polyps (CRSwNP). Basonuclin1 (BNC1), an epithelial-specific transcriptional factor, is a direct downstream target of p63 and thus might be involved in the pathogenesis of CRSwNP.

Objective: We sought to investigate whether BNC1 was associated with p63-mediated epithelial barrier defects and nasal mucosal inflammation in CRSwNP.

Construction and performance evaluation of a sustained release implant material polyetheretherketone with antibacterial properties.

Objective: This study aimed to construct a tightly binding antibiotic sustained release system on the polyetheretherketone (PEEK) surface and investigate the cellular activity and antibacterial properties of the new oral implant materials.

Methods: Low-temperature argon plasma under certain parameters was used to prepare P-PEEK with nano-topology, and chemical deposition technology was adopted to form a polydopamine (PDA) coating on the PEEK surface to build a biological binding platform, PDA/P-PEEK. Subsequently, vancomycin gelatin nanoparticles (Van-GNPs) were prepared by two-step desolvation method.

Replication study of susceptibility variants associated with allergic rhinitis and allergy in Han Chinese.

Background: Allergic rhinitis (AR) is believed to be a complex genetic disease. The last decade has been marked by the publication of more than 20 genome-wide association studies (GWASs) of AR and associated allergic phenotypes and allergic diseases, which have shown allergic diseases and traits to share a large number of genetic susceptibility loci. The aim of present study was therefore to investigate the highly replicated allergy related genes and variants as candidates for AR in Han Chinese subjects.

Association between methylation in nasal epithelial gene and chronic rhinosinusitis with nasal polyps.

Background: This study was performed to determine whether there was any association between abnormal DNA methylation of a thymic stromal lymphopoietin (TSLP) locus and pathogenesis of chronic rhinosinusitis (CRS).

Methods: A total of 48 CRS patients with nasal polyps (CRSwNP), 28 CRS patients without nasal polyps (CRSsNP) and 21 control subjects were enrolled into the study; and evaluated for serum total IgE level, olfactory score and nasal resistance. Samples were obtained from nasal polyps of CRSwNP patients, ethmoid mucosae of CRSsNP patients and inferior turbinate (IT) mucosa of control subjects during surgery, and used to isolate purified primary human nasal epithelial cells (HNECs).

Hypomethylation of the IL8 promoter in nasal epithelial cells of patients with chronic rhinosinusitis with nasal polyps.

Background: IL-8 is an important chemokine implicated in the pathogenesis of chronic rhinosinusitis (CRS), but little is known about epigenetic regulation of IL8 in the pathogenesis of CRS.

Objective: We sought to investigate the relationship between the DNA methylation level in the IL8 proximal promoter and CRS in Han Chinese subjects.

Methods: Patients with chronic rhinosinusitis with nasal polyps (CRSwNP; n = 187), patients with chronic rhinosinusitis without nasal polyps (CRSsNP; n = 89), and control subjects (n = 57) were enrolled in 2 independent cohorts.