DNA Methylation subclass Receptor Tyrosine Kinase II (RTK II) is predictive for seizure development in glioblastoma patients

alexandrossfakianakis shared this article with you from Inoreader DNA Methylation subclass Receptor Tyrosine Kinase II (RTK II) is predictive for seizure development in glioblastoma patients Via Neuro-Oncology Advance Access Abstract Background Seizures can present at any time before or after the diagnosis of a glioma. Roughly, 25-30 % of glioblastoma (GBM) patients initially present with seizures, and an additional 30 % develop seizures during the course of the disease. Early studies failed to show an effect of general administration of anti-epileptic drugs for glioblastoma patients, since they were unable to stratify patients into high- or low-risk seizure groups. Methods 111 patients, who underwent surgery for a GBM, were included. Genome-wide DNA methylation profiling was performed, before methylation subclasses and copy number changes inferred from methylation data were correlated with clinical characteristics. Independently, global gene expression was analyzed in GBM methylation subclasses from TCGA datasets (n=68). Results Receptor tyrosine Kinase (RTK) II GBM showed a significantly higher incidence of seizures than RTK I and mesenchymal (ME S) GBM (p<0.01). Accordingly, RNA expression datasets revealed an upregulation of genes involved in neurotransmitter synapses and vesicle transport in RTK II glioblastomas. In a multivariate analysis, temporal location (p=0.02, OR 5.69) and RTK II (p=0.03, OR 5.01) were most predictive for preoperative seizures. During postoperative follow-up, only RTK II remained significantly associated with the development of seizures (p<0.01, OR 8.23). Consequently, the need for antiepileptic medication and its increase due to treatment failure was highly associated with the RTK II methylation subclass (p<0.01). Conclusion Our study shows a strong correlation of RTK II glioblastomas with preoperative and long-term seizures. These results underline the benefit of molecular glioblastoma profiling with important implications for postoperative seizure control. View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

Artificial Enamel – Stronger and Durable finds other uses beyond Medicine

alexandrossfakianakis shared this article with you from Inoreader Artificial Enamel – Stronger and Durable finds other uses beyond Medicine Via Junior Dentist Researchers have successfully designed artificial Enamel in their lab, which might not be used in repairing or replacing lost Enamel on natural teeth but can be used in other areas beyond medicine. Artificial Enamel can be used in creating Body armor, stronger body for Vehicles, hardening surfaces of many appliances and even in building materials which can help in protecting against Earthquakes as wel l. The Artificial or Lab grown Enamel has been found to out perform the natural enamel in six different areas such as Elasticity, absorbing vibrations, strength etc. Scientists Develop Gel which repairs Damaged Enamel Enamel is a Complex structure and to replicate it and mimic all its properties is a big step in the right direction. Natural Enamel is the hardest tissue in the human body which is strong enough to not crack on applying hard forces for lifetime and also elastic enough to bear all types of forces. Natural Enamel has many nested modes of organization like wool fibers spun into yarn and then knitted in to a cable knit sweater, Calcium, phosphorus and oxygen atoms must come together in a complex repeating pattern to form crystalline wires. To achieve artificial enamel structure, researchers used extreme temperature to arrange the wires in an orderly formation to achieve the required arrangement. Earlier scientists unsuccessfully used peptides - short chains of amino acids which help in building proteins to mimic enamel. With the new attempt Researchers used malleable metal based coating to encase the wires to give extra strength According to Nicholas Kotov, a chemical engineer at the University of Michigan, Ann Arbor, said - What makes the artificial Enamel more like Natural Enamel is the coating on the crystalline wires which makes the Artificial Enamel more resilient and less likely to break, the soft material covering the wires can absorb high amount of pressures and shock. The magnesium rich coating of the Natural Enamel has been replaced with Zirconium Oxide giving it more strength and also non toxic. The use of these materials helped in achieving a material which was hard and could be cut into desired shapes using a diamond based saw. The team of Researchers have tested the hardness and elasticity of the new Artificial Enamel material by making a small notch on the surface and applied pressure on it until it gave in and formed a fracture. The toughness of the material was determined by seeing the pressure applied and the length of the crack, it also helped in determining the strain resistance of the enamel. The researchers even tried Artificial Enamel against Natural Enamel where the results where in favor of lab grown enamel outperforming the Natural one. The cells (Ameloblasts) which form Enamel die as soon as the tooth emerges from the gums hence Enamel cannot repair itself. Most dental visits are due to Caries in the Enamel and n neglecting, it might lead to tooth loss as well. To replace damaged Enamel, Dentists use artificial filling materials such as GIC, Composite, Dental Amalgam, etc which do not have the same properties such as Natural Enamel to withstand the Oral forces for decades. Use of this Artificial Enamel in repairing natural Enamel might still take some time as bonding Artificial Enamel to Natural Enamel needs to first heated to 300 degrees C first, Frozen and then cut into the required shape which is not so easy in a Clinical practice. References:  Science.org View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

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

alexandrossfakianakis shared this article with you from Inoreader Single nucleotide polymorphisms as a predisposing factor for the development of apical periodontitis ‐ an umbrella review Via International Endodontic Journal 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 Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

Crescent‐shaped skin paddle for a fibular flap: Avoiding skin grafting at the donor site

alexandrossfakianakis shared this article with you from Inoreader Crescent‐shaped skin paddle for a fibular flap: Avoiding skin grafting at the donor site Via Head & Neck Abstract A fibular osteocutaneous flap is the mainstay of oromandibular reconstruction. This report aimed to present a crescent-shaped skin paddle, a novel fibular skin paddle designed to achieve both sufficient intraoral lining and primary closure of the donor site. A 3–5-cm-wide crescent-shaped skin paddle was harvested according to the locations of the distal septocutaneous perforators on preoperative color Doppler sonography. This narrow skin paddle fits well morphologically into the mucosal defect, enabling a reliable intraoral lining. This advantage becomes more evident when the mandibular defect crosses the midline or extends posteriorly to the maxillary tuberosity as the shape of the mucosal defect becomes arcuate. Primary closure of the donor site is easier to achieve because the required width of the crescent-shaped skin paddle is minimized. This method reduces donor-site morbidity associated with skin grafting while ensuring safe intraoral closure with a fibular osteocutaneous flap. View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

Prognostic and therapeutic significance of XPO1 in T-cell lymphoma

alexandrossfakianakis shared this article with you from Inoreader Prognostic and therapeutic significance of XPO1 in T-cell lymphoma Via ScienceDirect Publication: Experimental Cell Research 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 Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

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 Accumulated bladder wall dose is correlated with patient-reported acute urinary toxicity in prostate cancer patients treated with stereotactic, daily adaptive MR-guided radiotherapy Via radiotheraphy 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 Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

Is inhaled zanamivir non-inferior to oral oseltamivir in the treatment of outpatients with influenza?

alexandrossfakianakis shared this article with you from Inoreader Is inhaled zanamivir non-inferior to oral oseltamivir in the treatment of outpatients with influenza? Via Clinical Infectious Diseases Advance Access View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

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 Airflow patterns in double occupancy patient rooms may contribute to roommate-to-roommate transmission of severe acute respiratory syndrome coronavirus 2 Via Clinical Infectious Diseases Advance Access 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 Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

KDR genetic predictor of toxicities induced by sorafenib and regorafenib

alexandrossfakianakis shared this article with you from Inoreader <i>KDR</i> genetic predictor of toxicities induced by sorafenib and regorafenib Via The Pharmacogenomics Journal - Issue - nature.com science feeds 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 Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

Potentiation of antibiotic activity, and efflux pumps inhibition by (2E)‐1‐(4‐aminophenyl)‐3‐(4‐fluorophenyl)prop‐2‐en‐1‐one

alexandrossfakianakis shared this article with you from Inoreader Potentiation of antibiotic activity, and efflux pumps inhibition by (2E)‐1‐(4‐aminophenyl)‐3‐(4‐fluorophenyl)prop‐2‐en‐1‐one Via Fundamental & Clinical Pharmacology Abstract In recent years, bacterial resistance to traditional drugs has increased, and the need to find new effective antibiotics to treat infections caused by multidrug-resistant bacteria has consequently become more important. The current study aimed to evaluate the potentiation of antibiotic activity and efflux pumps inhibition by (2E)-1-(4-aminophenyl)-3-(4-fluorophenyl)prop-2-en-1-one (PA-Fluorine) against the standard and resistant bacterial strains of Staphylococcus aureus and Escherichia coli. The association between PA-Fluorine and ampicillin reduced the MIC, showing a synergistic effect against Staphylococcus aureus. For Escherichia coli, PA-Fluoride did not show any significant results when associated with ampicillin. Ciprofloxacin and chlorpromazine showed synergy with PA-Fluorine on the two studied strains. An efflux pump mechanism was involved in the mechanism of action of chlorpromazine, norfloxacin, and ethidium bromide. PA-Fluorine synerg istically modulated norfloxacin and bromide. It was thus concluded that PA-Fluorine has the potential to enhance antibacterial activity when combined with antibiotics. Molecular docking studies showed the effect of intermolecular interactions of PA-Fluorine on the NorA and MepA efflux pumps. Physicochemical and pharmacokinetic properties were also obtained by ADMET studies for this chalcone, which presents be a strong candidate as an efflux pump inhibitor. View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

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 Cochlear Fluid Spaces and Structures of the  Gerbil High-Frequency Region Measured Using Optical Coherence Tomography (OCT) Via JARO - Journal of the Association for Research in Otolaryngology via MedWorm.com 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 Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

Electrical and Immunohistochemical Properties of Cochlear Fibrocytes in 3D Cell Culture and in the Excised Spiral Ligament of Mice

alexandrossfakianakis shared this article with you from Inoreader Electrical and Immunohistochemical Properties of Cochlear Fibrocytes in 3D Cell Culture and in the Excised Spiral Ligament of Mice Via JARO - Journal of the Association for Research in Otolaryngology via MedWorm.com AbstractFibrocyte degeneration in the cochlear lateral wall is one possible pathology of age-related metabolic hearing loss (presbycusis). Within the lateral wall fibrocytes play a role in potassium recycling and maintenance of the endocochlear potential. It has been proposed that cell replacement therapy could prevent fibrocyte degeneration in the CD/1 mouse model of hearing loss. For this to work, the replacement fibrocytes would need to take over the structural and physiological role of those lost. We have grown lateral wall fibrocytes from neonatal CD/1 mice in a 3D-collagen gel culture with the aim of assessing their functional similarity to native lateral wall fibrocytes, the latter in a slice preparation and in excised spiral ligament pieces. We have compared cultured and native fib... View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.