Κυριακή 19 Φεβρουαρίου 2023

Multifunctional Two-Dimensional Bi2Se3 Nanodiscs for Anti-Inflammatory Therapy of Inflammatory Bowel Diseases

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Publication date: Available online 17 February 2023

Source: Acta Biomaterialia

Author(s): Cong Zhang, Qingrong Li, Jie Shan, Jianghao Xing, Xiaoyan Liu, Yan Ma, Haisheng Qian, Xulin Chen, Xianwen Wang, Lian-Ming Wu, Yue Yu

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LRRK2 Quantification in Cerebrospinal Fluid of Patients with Parkinson's Disease and Atypical Parkinsonian Syndromes

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Abstract

Background

The alteration of leucine-rich repeat kinase 2 (LRRK2) kinase activity is thought to be involved in Parkinson's disease (PD) pathogenesis beyond familiar cases, and LRRK2 inhibitors are currently under investigation. Preliminary data suggest a relationship between LRRK2 alteration and cognitive impairment in PD.

Objective

To investigate cerebrospinal fluid (CSF) LRRK2 levels in PD and other parkinsonian disorders, also correlating them with cognitive impairment.

Methods

In this study, we retrospectively investigated by means of a novel highly sensitive immunoassay the levels of total and phosphorylated (pS1292) LRRK2 in CSF of cognitively unimpaired PD (n = 55), PD with mild cognitive impairment (n = 49), PD with dementia (n = 18), dementia with Lewy bodies (n = 12), atypical parkinsonian syndromes (n = 35), and neurological controls (n = 30).

Results

Total and pS1292 LRRK2 levels were significantly higher in PD with dementia with respect to PD with mild cognitive impairment and PD, and also showed a correlation with cognitive performances.

Conclusions

The tested immunoassay may represent a reliable method for assessing CSF LRRK2 levels. The results appear to confirm an association of LRRK2 alteration with cognitive impairment in PD. © 2023 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.

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Frequent EGFR exon 20 insertion in the so‐called peripheral‐type squamous cell neoplasm of uncertain malignant potential: a variant of bronchiolar adenoma or underrecognized entity?

AlexandrosSfakianakis shared this article with you from Inoreader
Frequent EGFR exon 20 insertion in the so-called peripheral-type squamous cell neoplasm of uncertain malignant potential: a variant of bronchiolar adenoma or underrecognized entity?


Introduction

Herein we describe a series of rare peripheral pulmonary neoplasms temporarily termed "peripheral type squamous cell neoplasm of uncertain malignant potential(PSCN-UMP)" and investigate their relationship to bronchiolar adenoma (BA) and squamous cell carcinoma (SCC).

Materials and methods

The histologic and immunohistochemical features of ten PSCN-UMPs and six BAs were compared. Whole exome sequencing (WES) and bioinformatics analysis were performed to further compare the genetic features of PSCN-UMPs, BAs, and NSCLCs.

Results

All PSCN-UMPs were peripherally located and histologically characterized by the lepidic, nested, and papillary proliferation of relatively bland squamous cells, accompanied by entrapped hyperplastic reactive pneumocytes. The basal squamous cells co-expressed TTF1 and squamous markers. Both cellular components exhibited bland morphology and a low proliferative activity. The six BAs met the morphologic and immunophenotypic features of proximal-type BA. Genetically, driver mutations, including frequent EGFR exon 20 insertions, were found in PSCN-UMPs, while the KRAS mutation, BRAF mutation, and ERC1::RET fusion were detected in BAs. PSCN-UMPs also shared some alterations with BAs in mutational signatures, while copy number variants (CNV) were enriched in MET and NKX2-1 in PSCN-UMP and MCL1, MECOM, SGK1, and PRKAR1A in BA.

Conclusion

PSCN-UMPs exhibited the proliferation of bland squamous cells accompanied by entrapped pneumocytes and frequent EGFR exon 20 insertions, which showed distinct features from BAs and SCCs. Recognition of this specific entity will help to expand the morphologic and molecular spectrum of peripheral lung squamous neoplasms.

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Central odontogenic fibroma with amyloid: a diagnostically challenging case

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Odontogenic fibroma is a rare benign mesenchymal odontogenic tumor, with its histological diversity possibly posing diagnostic challenges. A case of the amyloid variant of central odontogenic fibroma, with epithelial cells in perineural and intraneural locations, is reported herein. The 46-year-old female patient had experienced discomfort related to her anterior right hard palate for approximately 25 years. Clinical examination revealed a depression in the anterior hard palate, and radiographic examination showed a well-defined radiolucent lesion with root resorption of the adjacent teeth. (Source: International Journal of Oral and Maxillofacial Surgery)
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Xenogeneic collagen matrix versus connective tissue graft for soft tissue augmentation at immediately placed implants: a prospective clinical trial

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The advantages of immediate implant placement for patients include a reduced number of surgical procedures and a shorter overall treatment time. Disadvantages include a higher risk of aesthetic complications. The aim of this study was to compare xenogeneic collagen matrix (XCM) versus a subepithelial connective tissue graft (SCTG) used for soft tissue augmentation in combination with immediate implant placement without provisionalization. Forty-eight patients requiring a single implant-supported rehabilitation were selected and assigned to one of two surgical procedures: immediate implant with SCTG (SCTG group) or immediate implant with XCM (XCM group). (Source: International Journal of Oral and Maxillofacial Surgery)
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Recombinant measles virus encoding the spike protein of SARS-CoV-2 efficiently induces Th1 responses and neutralizing antibodies that block SARS-CoV-2 variants

AlexandrosSfakianakis shared this article with you from Inoreader
via Vaccine

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In this study, we developed a recombinant MeV expressing the full-length SARS-CoV-2 spike protein (rMeV-S) and tested its efficacy using mouse and hamster models. In hCD46Tg mice, two-dose rMeV-S vaccination induced higher Th1 secretion and humoral responses than one-dose vaccination. Interestingly, neutralizing antibodies induced by one-dose and two-dose rMeV-S immunization effectively blocked the entry of the α, β, γ, and δ variants of SARS-CoV-2. Furthermore, two-dose rMeV-S immunization provided complete protection against SARS-CoV-2 in the hamster model. These results suggest the potential of rMeV-S as a vaccine candidate for targeting SARS-CoV-2 and its variants.PMID:3679 2434 | DOI:10.1016/j.vaccine.2023.02.005 (Source: Vaccine)
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Characterization of protein-based risk signature to predict prognosis and evaluate the tumor immune environment in breast cancer

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CONCLUSION: This study established an effective prognostic proteomics signature with reliable predictive performance for survival, immune activity, and drug sensitivity. It might provide a novel perspective into the protein function in BC, and guide the individual treatment strategies for BC patients.PMID:36732487 | DOI:10.1007/s12282-023-01435-8 (Source: Breast Cancer)
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Acute Posterior Multifocal Placoid Pigment Epitheliopathy: A Rare Presentation of Anklylosing Spondylitis or a Paradoxical Reaction to Secukinumab?

AlexandrosSfakianakis shared this article with you from Inoreader
CONCLUSION: In AS patients, posterior uveitis can manifest as APMPPE. It should be recorded as an entity to be considered in the differential diagnosis.PMID:36608284 | DOI:10.1080/09273948.2022.2150225 (Source: Ocular Immunology and Inflammation)
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Πέμπτη 16 Φεβρουαρίου 2023

Onychomycosis associated with diabetic foot syndrome: a systematic review

AlexandrosSfakianakis shared this article with you from Inoreader
via Mycoses

Abstract

Background

A systematic review was conducted to investigate the prevalence of onychomycosis in patients with diabetes. The association of onychomycosis with risk factors in patients with diabetic foot syndrome was also examined.

Methods

The recommendations in the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) checklist were applied, and the included studies were assessed using the Strengthening the Reporting of Observational studies in Epidemiology (STROBE) method. Searches were conducted in October 2022 using PubMed (Medline) and Scopus for clinical studies, clinical trials, comparative studies, observational studies, and randomised clinical trials or controlled clinical trials addressing the prevalence and consequences of onychomycosis in patients with diabetes, diagnoses, or treatments. Two authors performed the study selection and data extraction, and any discrepancies between the two reviewers were resolved through discussion with a third reviewer.

Results

The systematic review included nine studies that met the inclusion criteria, and these studies enrolled 5426 patients with diabetes. Among these patients, 28.55% had onychomycosis that was mainly caused by Trichophyton rubrum. A significant association was found between the occurrence of onychomycosis and the presence of diabetic neuropathy (p=0.012) and elevated glycosylated haemoglobin values (p=0.039). There was no significant association between onychomycosis and ulceration (p=0.185). Eight studies had a grade 4 level of evidence and a grade C recommendation, and one study had a grade 1b level of evidence and a grade A recommendation.

Conclusion

The information described in the literature is insufficient and heterogeneous regarding the association of risk factors and ulceration in patients with diabetic foot compared with developing onychomycosis. There is also a need to implement onychomycosis diagnostic testing instead of relying only on a clinical diagnosis. Additional prospective, randomised, comparative studies are needed to increase the quality of studies in the literature.

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Risky business: Understanding the association between objective COVID‐19 occupational risk features and worker subjective risk perceptions

AlexandrosSfakianakis shared this article with you from Inoreader

Abstract

Many workers are at risk of contracting COVID-19 through work, and subjective perceptions of COVID-19 risk are important predictors of worker attitudes and behaviours. However, little to no research provides comprehensive examination of objective COVID-19 occupational risk factors and how, or under what conditions, these factors relate to subjective risk perceptions. Using two wave survey data matched with archival data from the Occupational Information Network (O*Net) and county-level COVID-19 case data (N = 295), we examine how objective COVID-19 occupational risk relates to workers' subjective risk of contracting COVID-19 at work. We also examine the moderating roles of financial frailty, adherence to governmental workplace safety recommendations, and local COVID-19 threat. Results indicate that objective COVID-19 occupational risk significantly predicts subjective risk of contracting COVID-19 at work. Moreover, factors representing in-person work conducted in close proximity to others accounted for a large proportion of explained variance in subjective risk. There was no support for moderation; however, financial frailty and workplace safety had independent main effects on subjective risk perceptions. Our results have theoretical implications for the Economic Stress and COVID-19 Occupational Risk model (Sinclair et al., Appl. Psychol., 70, 2021, 85), individual models of subjective risk perceptions, and practical implications for mitigating occupational risk at work.

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PPAR-γ activation promotes xenogenic bioroot regeneration by attenuating the xenograft induced-oxidative stress

AlexandrosSfakianakis shared this article with you from Inoreader

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International Journal of Oral Science, Published online: 16 February 2023; doi:10.1038/s41368-023-00217-4

PPAR-γ activation promotes xenogenic bioroot regeneration by attenuating the xenograft induced-oxidative stress
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