20,657 results match your criteria: "Ben-Gurion University of the Negev; akabayov@bgu.ac.il.[Affiliation]"

Cell-free DNA Levels in Herpes Zoster: A Cross-sectional Longitudinal Study.

Acta Derm Venereol

January 2025

Ben Gurion University of the Negev, Faculty of Health Sciences, Beer-Sheva, Israel; Pediatric Dermatology Service, Soroka University Medical Center, Beer-Sheva, Israel.

This study investigates serum cell-free DNA fluctuations in patients with herpes zoster or post-herpetic neuralgia, offering insight into the tissue damage and inflammatory dynamics associated with these conditions. A single-centre combined cross-sectional and longitudinal study was conducted with 59 patients to assess cell-free DNA levels in herpes zoster and post-herpetic neuralgia. Cell-free DNA was extracted from blood samples of patients with herpes zoster or post-herpetic neuralgia and compared with healthy controls.

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Background: Disorders of gut-brain interaction (DGBI) predominate in women, but little is known about sex differences in menses-related or menopause symptoms.

Methods: Using data from the Rome Foundation Global Epidemiology Survey, we assessed Rome IV DGBI symptoms in individuals in 26 countries who met criteria for ≥ 1 of 5 DGBI: irritable bowel syndrome (IBS), functional dyspepsia (FD), functional constipation (FC), functional diarrhea (FDr), or functional bloating (FB). Participants included pre- and post-menopausal women with DGBI and age-matched men.

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Purpose: Diffusing alpha-emitters Radiation Therapy ("Alpha DaRT") is a new cancer treatment modality that employs radium-224-loaded metal sources implanted in solid tumors to disperse alpha-emitting atoms within a therapeutic "kill-zone" of a few millimeters around each source. Preclinical studies have demonstrated tumor growth delay in various cancer types, including glioblastoma multiforme, and the method is used in clinical trials for patients with skin and head and neck cancer. This study aims to assess the safety and feasibility of implementing Alpha DaRT for brain tumor treatment in a large animal model.

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Propagation of membrane tension mediates mechanical signal transduction along surfaces of live cells and sets the time scale of mechanical equilibration of cell membranes. Recent studies in several cell types and under different conditions revealed a strikingly wide variation range of the tension propagation speeds including extremely low ones. The latter suggests a possibility of long-living inhomogeneities of membrane tension crucially affecting mechano-sensitive membrane processes.

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Epilepsy, a neurological disorder characterized by recurrent unprovoked seizures, significantly impacts patient quality of life. Current classification methods focus primarily on clinical observations and electroencephalography (EEG) analysis, often overlooking the underlying dynamics driving seizures. This study uses surface EEG data to identify seizure transitions using a dynamical systems-based framework-the taxonomy of seizure dynamotypes-previously examined only in invasive data.

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In soil polluted with benzene, toluene, ethylbenzene, and xylenes (BTEX), oxygen is rapidly depleted by aerobic respiration, creating a redox gradient across the plume. Under anaerobic conditions, BTEX biodegradation is then coupled with fermentation and methanogenesis. This study aimed to characterize this multi-step process, focusing on the interactions and functional roles of key microbial groups involved.

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Enhanced cyanophycin accumulation in diazotrophic cyanobacterium through random mutagenesis and tailored selection under varying phosphorus availability.

Bioresour Technol

December 2024

Microalgal Biotechnology Laboratory, The French Associates Institute for Agriculture and Biotechnology of Drylands, The J. Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, 8499000, Israel. Electronic address:

This study explored a sustainable alternative to the Haber-Bosch process by enhancing the production of the nitrogen-rich polymer cyanophycin (CGP) in the diazotrophic cyanobacterium Nostoc sp. PCC 7120. Applying UV-mutagenesis followed by canavanine selection, we isolate an initial mutant with enhanced CGP accumulation.

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The development of new protocols for stereospecific and stereoselective halogenation transformations by mild reaction conditions is a highly desirable research target for the chemical and pharmaceutical industries. Following the straightforward methodology for directly transforming a wide scope of alcohols to alkyl bromides and chlorides using substoichiometric amounts of thioureas and N-halo succinimides (NXS) as a halogen source in a single step, we noticed that in apolar solvents bromination of chiral secondary alcohols did not produce the expected racemates. In this study, the stereochemical aspects of the bromination reaction were examined.

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Synthetic ion channels made of DNA.

Curr Opin Chem Biol

December 2024

Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel. Electronic address:

Natural ion channels have long inspired the design of synthetic nanopores with protein-like features. A significant leap towards this endeavor has been made possible using DNA origami. The exploitation of DNA as a building material has enabled the construction of biomimetic DNA nanopores with a range of pore dimensions and stimuli-responsive capabilities.

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Topical antibiotic application and occlusive dressings stand as the current standard of care for partial thickness burn (PTB) treatment. Silver sulfadiazine (SSD) is the most widely used topical antimicrobial agent for acute burn management worldwide. Despite its antimicrobial benefits, there is emerging evidence that SSD might delay wound reepithelialization.

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Engineering of the genetic code.

Curr Opin Biotechnol

December 2024

Department of Life Sciences, Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel. Electronic address:

The genetic code is a universally conserved mechanism that translates genetic information into proteins, consisting of 64 codons formed by four nucleotide bases. With a few exceptions, the genetic code universally encodes 20 canonical amino acids (AAs) and three stop signals, with many AAs represented by multiple codons. Genetic engineering has expanded this system through approaches like codon reassignment and synthetic base pair introduction, allowing for the incorporation of noncanonical AAs (ncAAs) into proteins, known as genetic code expansion (GCE).

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This study proposes a novel, highly sensitive neutron detector design utilizing a unique multi-layered configuration. Each layer consists of a LiF: ZnS(Ag) scintillator coupled with a transparent neutron moderator that also functions as a light guide for the Silicon Photomultiplier (SiPM) light sensor. This design offers a cost-effective and readily available alternative for existing neutron detectors.

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It has long been speculated that the mechanical properties of the human oocyte can be an indicator for oocyte viability. Recent studies have demonstrated that embryo implantation rates, following Intra-Cytoplasmic Sperm Injection (ICSI) procedures, may be increased if the shear modulus value of the oocyte Zona Pellucida (ZP) is taken into consideration during embryo transfer. The shear modulus was determined by an iterative oocyte specific finite element (FE) analysis based on the clinical ICSI data.

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GeniePool 2.0: advancing variant analysis through CHM13-T2T, AlphaMissense, gnomAD V4 integration, and variant co-occurrence queries.

Database (Oxford)

December 2024

The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel.

Originally developed to meet the challenges of genomic data deluge, GeniePool emerged as a pioneering platform, enabling efficient storage, accessibility, and analysis of vast genomic datasets, enabled due to its data lake architecture. Building on this foundation, GeniePool 2.0 advances genomic analysis through the integration of cutting-edge variant databases, such as CHM13-T2T, AlphaMissense, and gnomAD V4, coupled with the capability for variant co-occurrence queries.

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Purpose: Extracellular vesicles (EVs) secreted by non-pigmented ciliary epithelial (NPCE) cells under oxidative stress may contribute to primary open-angle glaucoma (POAG) pathogenesis by altering gene expression in human trabecular meshwork (HTM) cells. This study investigated the impact of microRNAs (miRNAs) carried by NPCE-derived EVs on HTM cell gene expression under oxidative stress conditions.

Methods: NPCE cells were exposed to oxidative stress, and EVs were isolated from control and stressed cells.

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Impact of Baseline Hypoalbuminemia on Long-Term Survival Following Acute Myocardial Infarction According to Body Mass Index.

J Cardiovasc Dev Dis

November 2024

Department of Nursing, Recanati School for Community Health Professions, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel.

Serum albumin and body mass index (BMI, kg/m) have been associated with outcomes following acute myocardial infarction (AMI). Aiming to assess whether the mortality risk inflicted by hypoalbuminemia (<3.5 g/dL) in this context is influenced by BMI, we conducted a retrospective analysis of AMI survivors hospitalized during 2004-2017.

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Background: Previous studies on the association of adolescent obesity with comorbid diseases in Israel were conducted predominantly in the Israeli Jewish population.

Goal: To compare associations of adolescent obesity with Hypertension (HTN), Diabetes Mellitus type 2 (DM2), and Polycystic ovaries (PCO), singly or in combination, between Arabs and Jews in Israel.

Methods: A cross-sectional study of 313,936 Arab adolescents aged 14-19 years between the years 2007-2022, and 289,616 adolescents in a matched Jewish comparison group.

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Staphylococcus aureus is a major cause of infections like bacteremia, pneumonia, and endocarditis. These infections are often linked to the ability of S. aureus to form biofilms.

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Article Synopsis
  • Using MRI-fusion guided prostate biopsy (PB) leads to better agreement with prostatectomy histopathology results compared to traditional 12-core TRUS biopsy, especially in patients with higher-risk prostate cancer.
  • In a study involving 218 men diagnosed with prostate cancer, those who underwent MRI-fusion PB had a significantly higher concordance rate (73.1% vs. 42.9%) with the final pathology from surgery.
  • The research highlighted that the number of cancer-involved regions in the prostate is an important factor influencing concordance, indicating that MRI-fusion techniques enhance diagnostic accuracy and treatment planning for patients.
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Reusing treated wastewater (TWW) for crop irrigation has shown to provide environmental and economic benefits as well as drawbacks. This study was conducted using soils collected from a wastewater reuse facility in Tallahassee, FL, mainly to elucidate the long-term impact(s) of TWW irrigation on soil microbiome and nutrient status. Approximately 890 ha of land have been spray-irrigated with TWW since the 1980's to grow fodder crops.

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Preadmission systemic antibiotic treatment in necrotizing otitis externa (NOE).

Eur Arch Otorhinolaryngol

December 2024

Department of Otolaryngology, Head and Neck Surgery, Sheba Medical Center, Tel Hashomer, Israel.

Purpose: Necrotizing otitis externa (NOE) is a serious life-threatening infection, with Pseudomonas (PA) aeruginosa being the primary causative agent. Over the last two decades the use of systemic anti-PA antibiotics expanded substantially and are now prescribed regularly by physicians. Meanwhile, studies indicate shifting trends in the incidence of the offending pathogen in NOE.

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Long-term outcome of pediatric acute severe colitis: A prospective 5-year follow-up of the PRASCO trial.

J Pediatr Gastroenterol Nutr

December 2024

Juliet Keidan Institute of Pediatric Gastroenterology and Nutrition, The Eisenberg R&D Authority, Shaare Zedek Medical Center, The Hebrew University of Jerusalem, Jerusalem, Israel.

Objectives: The PRASCO trial reported the short-term superiority of an antibiotic cocktail plus intravenous corticosteroids (IVCS) over IVCS alone in children with acute severe colitis (ASC). Here, we report the extension of the PRASCO trial and the long-term outcomes of the antibiotic cocktail in ASC.

Methods: This prospective follow-up of the PRASCO trial documented disease outcomes and treatments annually through 5 years.

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Aim: C-reactive protein (CRP) is commonly used to assess the probability of bacterial infection and the need for empiric antibiotic treatment. We assessed the relationship between CRP levels and bacterial infection in the paediatric emergency room (PER) setting.

Methods: A retrospective cohort study.

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