Publications by authors named "Cohen Y"

Background: Future expansion of corn-derived ethanol raises concerns of sustainability and competition with the food industry. Therefore, cellulosic biofuels derived from agricultural waste and dedicated energy crops are necessary. To date, slow and incomplete saccharification as well as high enzyme costs have hindered the economic viability of cellulosic biofuels, and while approaches like simultaneous saccharification and fermentation (SSF) and the use of thermotolerant microorganisms can enhance production, further improvements are needed.

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FMR1 premutation (55-200 CGG repeats) results in fragile X-associated primary ovarian insufficiency (FXPOI). We evaluated expression levels of folliculogenesis-related mediators, follicle-stimulating hormone (FSH) receptor and anti-Mullerian hormone (AMH), to gain insights into the mechanisms underlying the reduced ovarian function. Mural granulosa cells (MGCs) were collected from FMR1 premutation carriers and noncarriers undergoing IVF treatments.

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Multiple myeloma (MM) patients are at excess risk for clinically significant COVID19 infection. BNT162b2 mRNA COVID19 (BNT162b2) vaccine provides effective protection against COVID19 for the general population, yet its effect in MM patients may be compromised due to disease and therapy-related factors and was not yet evaluated. This single-centre prospective study included MM patients tested for serological response 14-21 days post second vaccine.

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  • This study analyzed the impact of the COVID-19 pandemic on cardiovascular procedure volumes in the U.S. compared to non-U.S. institutions, finding significant declines across both areas.
  • In April 2020, U.S. facilities experienced a 68% reduction in procedures, similar to the 63% decline in non-U.S. locations, but U.S. invasive coronary angiography procedures dropped more steeply (69% vs. 53%).
  • The study also noted more U.S. facilities adopted telehealth and patient screening measures, with volume reductions varying by region—most significantly in the Northeast and Midwest.
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Novel protein-based nanovehicles offer alternatives to fat for delivery of lipophilic bioactives (nutraceuticals and drugs), yet they raise important questions regarding the bioavailability and absorption mechanism of the bioactive without fat. To provide answers, we chose vitamin D (VD) as a model lipophilic-nutraceutical, re-assembled casein-micelles (rCM) as model protein-based nanovehicles, and non-fat yoghurt as a model food. We prepared three yoghurt formulations: 3% fat with VD dissolved in milk-fat, non-fat and 3% fat, both latter enriched with VD within rCM.

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About 20% of MM patients have T2DM. We assessed the impact of T2DM/pre-T2DM on MM progression and OS. We collected retrospective data of newly diagnosed MM patients in Maccabi health services, Israel, between 2012 and 2016.

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  • The INCAPS COVID Oceania study investigated how the COVID-19 pandemic affected the volume of cardiac procedures in the Oceania region by comparing data from March 2019 to April 2020.
  • A significant reduction of 52.2% in cardiac diagnostic procedures was noted in Oceania, which was less severe than the global reduction of 75.9%.
  • The decrease varied by procedure type, with transthoracic echocardiography down 51.6% and transoesophageal echocardiography decreased by 74%; overall, recommendations to limit COVID-19 spread likely influenced these drops.
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Background: Reduced mortality at 28 days in patients treated with corticosteroids was demonstrated, but this result was not confirmed by certain large epidemiological studies. Our aim was to determine whether corticosteroids improve the outcomes of our patients hospitalized with COVID-19 pneumonia.

Methods: Our retrospective, single centre cohort study included consecutive patients hospitalized for moderate to severe COVID-19 pneumonia between March 15 and April 15 2020.

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Objective: Hemato-oncology patients are at high risk for morbidity and mortality from coronavirus disease (COVID-19). The resultant heightened anxiety among these patients may negatively affect adherence to therapy and treatment-related outcome. We aimed to assess whether the adoption of precautionary measures provided by the medical team led to a reduction in COVID-19-related anxiety and, consequently, to successful execution of treatment plans.

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  • The study investigates the link between vaccine-associated hypermetabolic lymphadenopathy (VAHL) and humoral immune response post-BNT162b2 vaccination in patients with hematologic malignancies.
  • The research found that patients treated with B cell depleting therapy had significantly lower rates of VAHL compared to those who weren't, suggesting treatment may impact the lymph node's response to vaccination.
  • Higher levels of anti-spike antibodies were correlated with increased incidence of VAHL, highlighting a strong relationship between immune response and observed lymphatic changes after vaccination.
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Our institution established a Fontan surveillance plan, which included ambulatory rhythm monitoring (ARM) at 6, 10, 13, 16 and 19 years old, for early detection of Fontan-associated complications. We conducted a retrospective chart review of Fontan patients followed at our institution 2014-2018 to determine the utility of surveillance ARMs. 139 ARMs from 83 patients were included.

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  • Some vaccines, including those for SARS-CoV-2, can trigger or worsen immune-mediated diseases (IMDs) due to their unique mechanisms of action involving TLR agonism.
  • A study evaluated 27 cases of new-onset or flare-up of IMDs within 28 days of receiving SARS-CoV-2 vaccines across five major medical centers in Israel, the UK, and the USA, with most cases linked to the BNT-162b2 vaccine.
  • The majority of cases were mild to moderate in severity, with notable recovery in over 80% of patients, often with corticosteroid treatment, and a large number of IMD occurrences could not be directly linked to the specific vaccine administered.
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Substantial COVID-19 research investment has been allocated to randomized clinical trials (RCTs) on hydroxychloroquine/chloroquine, which currently face recruitment challenges or early discontinuation. We aim to estimate the effects of hydroxychloroquine and chloroquine on survival in COVID-19 from all currently available RCT evidence, published and unpublished. We present a rapid meta-analysis of ongoing, completed, or discontinued RCTs on hydroxychloroquine or chloroquine treatment for any COVID-19 patients (protocol: https://osf.

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For the last three decades, enzyme replacement therapy (ERT) for Gaucher disease (GD) has been available. We aimed to evaluate the effect of ERT on the pregnancy and obstetric outcome in a unique group of multiparous women with type 1 GD (GD1) who had pregnancies with and without ERT. The Gaucher Unit database (1987-2019) was searched for multiparous women who had pregnancies before and after the institution of ERT.

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In mango ( L.), fruitlet abscission limits productivity. The INFLORESCENCE DEFICIENT IN ABSCISSION (IDA) peptide acts as a key component controlling abscission events in Arabidopsis.

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Conducting numerous, rapid, and reliable PCR tests for SARS-CoV-2 is essential for our ability to monitor and control the current COVID-19 pandemic. Here, we tested the sensitivity and efficiency of SARS-CoV-2 detection in clinical samples collected directly into a mix of lysis buffer and RNA preservative, thus inactivating the virus immediately after sampling. We tested 79 COVID-19 patients and 20 healthy controls.

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This report introduces the concept of large-scale surgery and reconstruction when all other medical means of treatment have failed. In select cases, this may act as a mode of buying time and allowing the patient to receive second- or third-line treatments.

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Despite the highly strained nature of cyclopropanes possessing three vicinal quaternary carbon stereocenters, the regio- and diastereoselective copper-catalyzed carbomagnesiation reaction of cyclopropenes provides an easy and efficient access to these novel persubstituted cyclopropyl cores with a complete regio- and diastereoselectivity.

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Carbon nanotubes (CNTs) are stiff, all-carbon macromolecules with diameters as small as one nanometer and few microns long. Solutions of CNTs in chlorosulfonic acid (CSA) follow the phase behavior of rigid rod polymers interacting via a repulsive potential and display a liquid crystalline phase at sufficiently high concentration. Here, we show that small-angle X-ray scattering and polarized light microscopy data can be combined to characterize quantitatively the morphology of liquid crystalline phases formed in CNT solutions at concentrations from 3 to 6.

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