Publications by authors named "Hammer K"

Introduction: In recent years, numerous hospitals have established in-house three-dimensional (3D) printing centers, enabling health-care facilities to leverage the transformative capabilities of additive manufacturing technology on their premises. With this emerging opportunity arises a necessity to undertake a thorough assessment of the manufactured tools employed in clinical practice. The objectives of this article are to describe the pathway of in-house printing and evaluate the accuracy of 3D-printed specific instruments.

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Background: The Alere PBP2a SA Culture Colony Test is an FDA-cleared immunochromatographic assay for rapid detection of penicillin-binding protein2a (PBP2a) in .

Methods: We investigated the performance of the PBP2a SA Culture Colony Test with 78 coagulase-negative (CoNS) isolates from different body sites, with the Vitek 2 Antimicrobial Susceptibility Test (AST) as a reference standard.

Results: The CoNS species were 62 ; 6 ; 3 ; 2 ; 2 ; and 1 each of and .

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With the steady rise in antifungal resistance amongst clinically important yeasts, antifungal drug discovery remains of the utmost importance. To determine the potential of some honeys as alternative antifungal agents, we quantified the antifungal activity of 12 Western Australian honey samples, two Manuka honey samples and an artificial honey against 10 yeast isolates including clinical and reference strains. Results showed that the tested honeys varied in activity, and yeasts species also differed in susceptibility, with minimum inhibitory concentrations (MICs) determined by broth microdilution ranging from 8% to >44% w/v honey.

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Background: Many United States veterans utilize prescription opioids to treat chronic pain symptoms and are subsequently at risk for opioid and alcohol misuse. As more states legalized the use of cannabis for medical use, increasing numbers of people are using cannabis pharmacotherapy for pain. The veterans Health Administration (VHA) Directive 1315, July 28, 2023 prohibits any medical staff on recommending, making referral to, and complete forms for a state approved program.

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  • * A systematic review included nine studies with 407 patients; results indicated a significantly higher SIBO prevalence (6x) in patients receiving parenteral nutrition (PN) compared to those not on PN.
  • * The findings suggest that while PN and possibly the use of acid-suppressing medications increase SIBO risk in IF patients, the quality of evidence is low due to variability in the studies and a lack of robust case-control research.
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This study is the first to report on the presence of oestrogenic compounds in different clover flower nectar samples, in bee-deposited nectars collected from hive combs (unripe honey) and in mature honeys harvested from the same hives. The clover species investigated were two red clover () cultivars, bred specifically for high isoflavone content, alongside a sainfoin () and a purple clover () cultivar. A total of eight isoflavones, four of them non-glycosidic (biochanin A, formononetin, genistein and daidzein) the others glycosidic (sissotrin, ononin, genistin and daidzin), were targeted for identification and quantification in this study using high-performance thin-layer chromatography (HPTLC).

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  • This paper examines the physicochemical and phytochemical properties of monofloral honeys from five legume species, focusing on factors like pH, moisture content, and antioxidant activity.
  • Major sugars like glucose and fructose were identified, with pH levels conforming to food safety standards but with some moisture content slightly exceeding recommended limits.
  • The study found red clover honey had the highest total phenolic content, while purple clover showed superior antioxidant activity, establishing a method for producing these honeys in controlled environments.
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The aim of this study was to examine a collection of 79 honeys derived from plants endemic to several Western Australian unique bioregions for bioactivity and physicochemical characteristics. For physicochemical analyses, total phenolic content, high performance thin layer chromatography (HPTLC) fingerprints, pH, Brix, colour and hydrogen peroxide generation were examined. Brix (82.

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Background: Clostridioides difficile (C. difficile) is a common hospital-acquired infection which can lead to major implications for patients and our health care system. In this study, we examine a policy change at a single-site Veterans Affairs Healthcare system that allowed bedside nurses to order C.

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  • The study aimed to assess the relationship between thymus size during the second trimester and low birth weight in fetuses, comparing those who were small for gestational age (SGA) to normal weight fetuses.
  • Researchers measured the fetal thymic-thoracic ratio (TT-ratio) using echocardiograms from a sample of 105 SGA and 533 control fetuses and analyzed the statistical significance of the results.
  • The findings indicated that a higher TT-ratio in SGA fetuses correlated with increased odds of low birth weight, suggesting that this measure could be a useful tool for prenatal screening, although further prospective studies are needed for validation.
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We report the outcomes of a comprehensive study of the potential consequences of the implementation of the EU Maritime Spatial Planning Directive (MSPD) in Danish waters. The analyses are anchored in a framework developed in support of data-driven Ecosystem-Based Maritime Spatial Planning. The data for the models include not only human stressors but also information on the distribution of ecosystem components ranging from planktonic communities over benthic communities to fish, seabirds and marine mammals.

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The aim of this study was to assess the release profile of components in five different honeys (a New Zealand Manuka and two Western Australian honeys, a Jarrah honey and a Coastal Peppermint honey) and their corresponding honey-loaded gel formulations using a custom-designed Franz-type diffusion cell in combination with High-Performance Thin-Layer Chromatography (HPTLC). To validate the suitability of the customised setup, release data using this new approach were compared with data obtained using a commercial Franz cell apparatus, which is an established analytical tool to monitor the release of active ingredients from topical semisolid products. The release profiles of active compounds from pure honey and honey-loaded formulations were found to be comparable in both types of Franz cells.

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Background: Infectious diseases consultation improves outcomes in patients with candidemia, although some facilities lack access to consultation. This multisite health care system study compared in-hospital mortality in patients with candidemia across 3 groups-those who received on-site consultation, telemedicine consultation, or no consultation. All patients were reviewed by an antimicrobial stewardship pharmacist.

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Aims: This study aimed to evaluate the effects of storage and different temperatures on the antibacterial activity and physicochemical characteristics of several types of honey.

Methods And Results: Honeys stored for 16 weeks at 37 and 45°C showed significant declines in antibacterial activity determined by minimum inhibitory concentrations, the loss of hydrogen peroxide, decreases in honey pH, and increases in honey colour, with changes most pronounced at 45°C. In contrast, honeys stored for 16 weeks at ambient (∼22°C) and cold (4, -20, and -80°C) temperatures showed only minor changes.

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Introduction: Frozen sperm utilization might negatively impact cycle outcomes in animals, implicating cryopreservation-induced sperm damage. However, fertilization and intrauterine insemination (IUI) in human studies are inconclusive.

Methods: This study is a retrospective review of 5,335 IUI [± ovarian stimulation (OS)] cycles from a large academic fertility center.

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Honey has widespread use as a nutritional supplement and flavouring agent. Its diverse bioactivities, including antioxidant, antimicrobial, antidiabetic, anti-inflammatory, and anticancer properties, have also made it an aspirant natural product for therapeutic applications. Honey is highly viscous and very sticky, and its acceptance as a medicinal product will require formulation into products that are not only effective but also convenient for consumers to use.

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Background: Instrumental activities of daily living (IADL) are neuropsychological-driven tasks that are linked to cognitive dysfunction. Examining population-based IADL deficits may reveal insights for the presence of these impairments in the United States.

Objective: This investigation sought to evaluate the prevalence and trends of IADL impairments in Americans.

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Objectives: Patient-reported outcome measures facilitate evaluation of patients and allow to better assess treatment effects. Validated tools are lacking for pediatric gastroenterological patients. We thus aimed to adapt and validate for pediatric populations a self-administered Structured Assessment of Gastrointestinal Symptoms (SAGIS) tool that previously has been validated in adult cohorts.

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Despite decades of development of treatments and the successful application of targeted therapies for multiple myeloma, clinical challenges remain for patients with relapsed/refractory disease. A drug designed for efficient delivery of an alkylating payload into tumor cells that yields a favorable therapeutic window can be an attractive choice. Herein we describe melphalan flufenamide (melflufen), a drug with a peptide carrier component conjugated to an alkylating payload, and its cellular metabolism.

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Methylglyoxal (MGO) is considered to be one of the vital components responsible for the anti-bacterial activity of spp. (Manuka) honey. While many studies have demonstrated a dose-dependent antibacterial activity for MGO in vitro, from a therapeutic viewpoint, it is also important to confirm its release from Manuka honey and also from Manuka honey-based formulations.

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is a parasite of wild canids and dogs that serve as definite hosts, harboring the adult cestode, whereas rodents are the intermediate hosts in which the metacestode/cysticercus/larval stage occurs. Fecal-oral transmission ensures the parasite's lifecycle. At times, dogs and humans act as accidental intermediate hosts.

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Purpose: To study the association, if any, between anti-Müllerian hormone (AMH) and pre-ovulatory endometrial thickness (ET) in gonadotropin/intrauterine insemination (IUI) cycles.

Methods: This retrospective cohort study included a total of 964 patients undergoing 1926 gonadotropin/IUI cycles at an academic fertility center. Primary outcome measure was the association between serum AMH and measured ET on the day of and the day before human chorionic gonadotropin hormone (hCG) ovulation trigger.

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This study reports on the total phenolic content and antioxidant activity as well as the phenolic compounds that are present in spp. (Red Bell), (Coastal Peppermint), (Marri) and (Jarrah) honeys from Western Australia. The honey's total phenolic content (TPC) was determined using a modified Folin-Ciocalteu assay, while their total antioxidant activity was determined using FRAP and DPPH assays.

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Honeys are commonly subjected to a series of post-harvest processing steps, such as filtration and/or radiation treatment and heating to various temperatures, which might affect their physicochemical properties and bioactivity levels. Therefore, there is a need for robust quality control assessments after honey processing and storage to ensure that the exposure to higher temperatures, for example, does not compromise the honey's chemical composition and/or antioxidant activity. This paper describes a comprehensive short-term (48 h) and long-term (5 months) study of the effects of temperature (40 °C, 60 °C and 80 °C) on three commercial honeys (Manuka, Marri and Coastal Peppermint) and an artificial honey, using high-performance thin-layer chromatography (HPTLC) analysis.

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Regulation of the rate of stem cell division is one of the key determinants of the abundance of differentiating progeny in stem cell-supported tissues, and mis-regulation can lead to tumorigenesis. The well-studied Drosophila testis niche is an excellent model system to study the regulation of stem cell division in vivo. This niche supports two stem cell populations-the germline stem cells (GSCs) and cyst stem cells (CySCs), which cluster around a group of cells called the hub.

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