Πέμπτη 28 Απριλίου 2022

Single nucleotide polymorphisms as a predisposing factor for the development of apical periodontitis ‐ an umbrella review

alexandrossfakianakis shared this article with you from Inoreader

Abstract

Background

The interaction between heredity and different environmental factors in the modification of apical periodontitis (AP) susceptibility and prediction of its progression remain poorly elucidated.

Objectives

This umbrella review aimed to (i) analyse the available relevant systematic reviews in an attempt to determine the association between genotype and allelic distribution of different single nucleotide polymorphisms (SNPs) and the development of AP, (ii) report deficiencies and gaps in knowledge in this area, and (iii) present recommendations to conduct future clinical studies and systematic reviews.

Methods

A literature search was conducted using Clarivate Analytics' Web of Science, Scopus, PubMed, and Cochrane Database of Systematic Reviews, from inception to October 2021, with no language restrictions, including a grey literature search. Systematic reviews with/without meta-analysis evaluating genotype and allelic distribution of different SNPs between adult patients with/ without AP were included. All other type of studies were excluded. The methodological quality was assessed using the A MeaSurement Tool to Assess systematic Reviews (AMSTAR) - 2 tool. Two independent reviewers were involved in study selection, data extraction, and appraising the included reviews; disagreements were resolved by a third reviewer.

Results

The current study includes five systematic reviews. Three reviews performed meta-analysis. Three reviews were graded by AMSTAR 2 as 'critically low' quality, whereas other two were graded as 'low' and 'moderate' quality. Two reviews indicated that carriers of specific genotypes and alleles of tumour necrosis factor – alpha (TNF-α) -308 G>A and interleukin 1-beta (IL-1β) +3954 C/T gene polymorphisms are more susceptible to an acute and persistent form of AP. However, high heterogeneity was observed.

Discussion

The statistical heterogeneity within included systematic reviews was a consequence of clinical and methodological diversity amongst primary studies. Although some of included reviews suggested that carriers of specific genotype and/or allele of TNF-α -308 G>A and IL-1β +3954 C/T SNPs are more susceptible to AP, their conclusions should be interpreted with caution.

Conclusions

No candidate genes could be identified as a definitive genetic risk or protective factor for the development and progression of AP, and further high-quality genome-wide association studies are warranted.

View on the web

Prognostic and therapeutic significance of XPO1 in T-cell lymphoma

alexandrossfakianakis shared this article with you from Inoreader

1-s2.0-S0014482722X00104-cov150h.gif

Publication date: Available online 27 April 2022

Source: Experimental Cell Research

Author(s): Danian Nie, Xiaohui Xiao, Jiaoting Chen, Shuangfeng Xie, Jie Xiao, Wenjuan Yang, Hongyun Liu, Jieyu Wang, Liping Ma, Yumo Du, Kezhi Huang, Yiqing Li

View on the web

Accumulated bladder wall dose is correlated with patient-reported acute urinary toxicity in prostate cancer patients treated with stereotactic, daily adaptive MR-guided radiotherapy

alexandrossfakianakis shared this article with you from Inoreader

1-s2.0-S0167814022X00030-cov150h.gif

Publication date: Available online 28 April 2022

Source: Radiotherapy and Oncology

Author(s): Thomas Willigenburg, Joanne M. van der Velden, Cornel Zachiu, Frederik R. Teunissen, Jan J.W. Lagendijk, Bas W. Raaymakers, Johannes C.J. de Boer, Jochem R.N. van der Voort van Zyp

View on the web

Airflow patterns in double occupancy patient rooms may contribute to roommate-to-roommate transmission of severe acute respiratory syndrome coronavirus 2

alexandrossfakianakis shared this article with you from Inoreader
Abstract
Background
Hospitalized patients are at risk to acquire severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) from roommates with unrecognized coronavirus disease 2019 (COVID-19). We hypothesized that airflow patterns might contribute to SARS-CoV-2 transmission in double occupancy patient rooms.
Methods
A device emitting condensed moisture was used to identify airflow patterns in double occupancy patient rooms. Simulations were conducted to assess transfer of fluorescent microspheres, 5% sodium chloride aerosol, and aerosolized bacteriophage MS2 between patient beds 3 meters apart and to assess the effectiveness of privacy curtains and portable air cleaners in reducing transfer.
Results
Air flowed from inlet vents in the center of the room to an outlet vent near the door, resulting in air currents flowing toward the bed adjacent to the outlet vent. Fluorescent microspheres (212-250 µm diameter), 5% sodium chlor ide aerosol, and aerosolized bacteriophage MS2 released from the inner bed were carried on air currents toward the bed adjacent to the outlet vent. Closing curtains between the patient beds reduced transfer of each of the particles. Operation of a portable air cleaner reduced aerosol transfer to the bed adjacent to the outlet vent but did not offer a benefit over closing the curtains alone, and in some situations resulted in an increase in aerosol exposure.
Conclusion
Airflow patterns in double occupancy patient rooms may contribute to risk for transmission of SARS-CoV-2 between roommates. Keeping curtains closed between beds may be beneficial in reducing risk.
View on the web

KDR genetic predictor of toxicities induced by sorafenib and regorafenib

alexandrossfakianakis shared this article with you from Inoreader

The Pharmacogenomics Journal, Published online: 28 April 2022; doi:10.1038/s41397-022-00279-3

KDR genetic predictor of toxicities induced by sorafenib and regorafenib
View on the web

Cochlear Fluid Spaces and Structures of the  Gerbil High-Frequency Region Measured Using Optical Coherence Tomography (OCT)

alexandrossfakianakis shared this article with you from Inoreader
In this study, optical coherence tomography was employed to obtain volumetric images of the high-frequency hook region of the gerbil cochlea, as viewed through the round window, with far better resolution capability than had been possible before. The anatomical structures and fluid spaces of the organ of Corti were segmented and quantified in vivo and over a 90-min postmortem period. We find that the arcuate-zone and pectinate-zone widths change very little postmortem. The volume of the scala tympani between the round-window membrane and basilar membrane and the volume of the inner spiral sulcus decrease in the first 60-min postmortem. While textbook drawings of the  mammalian organ of Corti and cortilymph prominently depict the tunnel of Corti, the outer tunnel is typically missing. This...
View on the web

Evidence for Loss of Activity in Low-Spontaneous-Rate Auditory Nerve Fibers of Older Adults

alexandrossfakianakis shared this article with you from Inoreader
This study is the first to successfully assess forward-masked recovery functions in both younger and older adults and provides important insights into the structural and functional changes occurring in the AN with increasing age. (Source: JARO - Journal of the Association for Research in Otolaryngology)
View on the web

Effect of Selective Carboplatin-Induced Inner Hair Cell Loss on Temporal Integration

alexandrossfakianakis shared this article with you from Inoreader
AbstractIntegration of acoustic information over time is essential for processing complex stimuli, such as speech, due to its continuous variability along the time domain. In both humans and animals, perception of acoustic stimuli is a function of both stimulus intensity and duration. For brief acoustic stimuli, as duration increases, thresholds decrease by approximately 3  dB for every doubling in duration until stimulus duration reaches 500 ms, a phenomenon known as temporal integration. Although hearing loss and damage to outer hair cells (OHC) have been shown to alter temporal integration in some studies, the role of cochlear inner hair cells (IHC) on temporal i ntegration is unknown. Because IHC transmit nearly all acoustic information to the central auditory system and are believed...
View on the web

Blinatumomab overcomes poor prognostic impact of measurable residual disease in pediatric high‐risk first relapse B‐cell precursor acute lymphoblastic leukemia

alexandrossfakianakis shared this article with you from Inoreader

Abstract

Background

Blinatumomab, a CD3/CD19 BiTE® (bispecific T cell engager) molecule, was superior to high-risk third course consolidation chemotherapy (HC3) in prolonging event-free survival (EFS) in children with high-risk first relapse B-cell precursor acute lymphoblastic leukemia (B-ALL). Here, we report results from a post hoc measurable residual disease (MRD) analysis of this phase 3 study (NCT02393859).

Procedure

Children >28 days and <18 years with high-risk first-relapse B-ALL in cytomorphological complete remission (M1 marrow, <5% blasts) or with M2 marrow (≥5% and <25% blasts) after induction and two cycles of high-risk consolidation chemotherapy (baseline) were enrolled in this trial. Patients received one cycle of blinatumomab (15 μg/m2/day, 4 weeks, continuous intravenous infusion) or HC3. The primary endpoint was EFS. In this post hoc analysis, patients with MRD <10–4 by PCR were grouped as having positive but not quantifiable (pbnq) or undetectable disease.

Results

A higher proportion of patients with MRD <10–4 had undetectable versus pbnq disease after blinatumomab (day 29) than after HC3 (p = 0.0367). Of the 22 patients with MRD ≥10–4 at baseline who achieved MRD remission after blinatumomab, 20 (91%) achieved MRD <10–4 remission by day 15. Patients treated with blinatumomab had improved EFS and overall survival compared with those treated with HC3 independent of end-of-induction or baseline (end-of-second consolidation) MRD levels.

Conclusions

Blinatumomab was more efficacious than HC3 regardless of MRD status before treatment. These data support the role of blinatumomab in inducing deep MRD remission, negating the poor prognostic value of MRD.

View on the web

Τετάρτη 27 Απριλίου 2022

Impact of SARS‐CoV‐2 Mu variant on vaccine effectiveness: a comparative genomics study at the peak of the third wave

alexandrossfakianakis shared this article with you from Inoreader

Abstract

We assessed the circulation of SARS-CoV-2 variants amongst vaccinated military personnel in Bogotá, Colombia to evaluate the mutations of certain variants and their potential for breakthrough infection in vaccinated subjects. We observed that in vaccinated individuals the most frequent infecting lineage was Mu (B.1.621 and B.1.621.1). The above possibly associated with specific mutations that confers it with vaccine-induced immune escape ability. Our findings highlight the importance of how genomic tracking coupled with epidemiological surveillance can assist in the study of novel emerging variants (e.g. Omicron) and their impact on vaccination efforts worldwide.

This article is protected by copyright. All rights reserved.

View on the web

Cell pyroptosis in picornavirus and its potential for treating viral infection

alexandrossfakianakis shared this article with you from Inoreader

Abstract

Cell pyroptosis has received increased attention due to the associations between innate immunity and disease, and it has become a major focal point recently due to in-depth studies of cancer. With increased research on pyroptosis, scientists have discovered that it has an essential role in viral infections, especially in the occurrence and development of some picornavirus infections. Many picornaviruses, including Coxsackievirus, a71 enterovirus, human rhinovirus, encephalomyocarditis virus, and foot-and-mouth disease virus induce pyroptosis to varying degrees. This review summarized the mechanisms by which these viruses induce cell pyroptosis, which can be an effective defense against pathogen infection. However, excessive inflammasome activation or pyroptosis also can damage the host's health or aggravate disease progression. Careful approaches that acknowledge this dual effect will aid in the exploration of picornavirus infections and the mechanisms that produce the inflammatory response. This information will promote the development of drugs that can inhibit cell pyroptosis and provide new avenues for future clinical treatment.

This article is protected by copyright. All rights reserved.

View on the web

Evaluation of A NEW “All in One” SARS‐CoV‐2 antigen‐detecting rapid diagnostic test AND self‐test: diagnostic performance and usability in child and adult populationS

alexandrossfakianakis shared this article with you from Inoreader

Abstract

The control of the COVID-19 epidemics has been one global health priorities for the last two years. To that end, more reliable and easy-to-use, regardless of age, diagnostic tests are necessary. Considering that, we evaluated an innovative two-step self-test, the AAZ COVID-VIRO ALL IN®, switching from the classic nasal swab to a nasal sponge. We performed a multicentre study, on 124 adults and children, in a point-of-care setting. Sensitivity, specificity and overall acceptance of the COVID-VIRO ALL IN® self-test compared to RT-PCR on nasopharyngeal samples were of 93.0%, 100% and 97.5%, respectively. We then performed a multicentre, usability study to evaluate the ease of use of COVID-VIRO ALL IN® on 68 laypersons adults. A vast majority of participants correctly executed and interpreted the test. The usability was then specifically investigated on 40 children and teenagers, comparing COVID-VIRO® first generation to the new COVID-VIRO ALL IN®. They all found COVID-VIRO ALL IN® more comfortable and easier to use. For young children, the new self-test seems safer (less risk of trauma, no liquid exposure), and faster than saliva-based RT-PCR. Moreover, the COVID-VIRO ALL IN® can easily be adapted as a multiplex self-test for other respiratory viruses, opening new perspectives of simultaneous, rapid and massive detection of respiratory infections, especially among vulnerable populations like children and elderly people.

This article is protected by copyright. All rights reserved.

View on the web