Publications by authors named "Eng T"

Horizontal gene transfer (HGT) is a major process by which genes are transferred between microbes in the rhizosphere. However, examining HGT remains challenging due to the complexity of mimicking conditions within the rhizosphere. Fabricated ecosystems (EcoFABs) have been used to investigate several complex processes in plant-associated environments.

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Unlabelled: Diazotrophic bacteria can reduce atmospheric nitrogen into ammonia enabling bioavailability of the essential element. Many diazotrophs closely associate with plant roots increasing nitrogen availability, acting as plant growth promoters. These associations have the potential to reduce the need for costly synthetic fertilizers if they could be engineered for agricultural applications.

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Effective transport of biological systems as cargo during space travel is a critical requirement to use synthetic biology and biomanufacturing in outer space. Bioproduction using microbes will drive the extent to which many human needs can be met in environments with limited resources. Vast repositories of biological parts and strains are available to meet this need, but their on-site availability requires effective transport.

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Writing is usually integrated in the curriculum of science studies. However, students often lack the skills to write for various audiences or, to produce a well written manuscript. We developed a concise project of 15 European Credits to improve the writing skills in an early phase of the bachelor study.

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Unlabelled: The industrial amino acid production workhorse, Corynebacterium glutamicum naturally produces low levels of 2,3,5,6-tetramethylpyrazine (TMP), a valuable flavor, fragrance, and commodity chemical. Here, we demonstrate TMP production (∼0.8 g L-1) in C.

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Article Synopsis
  • Preclinical models of osteochondral defects (OCDs) in rats are used to study treatment effects and disease progression for osteoarthritis before moving to human trials.* -
  • Two OCD rat models with the same defect size were created in different areas of the femur: one in the trochlea and one in the medial condyle, revealing only minor gait changes and no pain difference in the trochlear defect.* -
  • Evaluations indicated that the trochlear defects led to more severe osteoarthritis changes over time, suggesting that future treatments should focus on both repairing the defects and addressing the joint degeneration.*
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  • Exercise is a key treatment for post-traumatic osteoarthritis (PTOA) and may help clear inflammatory substances from the joints, potentially providing therapeutic benefits.
  • This study involved inducing PTOA in rats through surgery, followed by a mild treadmill exercise regimen, which helped assess its effects on joint health and function.
  • Results showed that exercise reduced joint damage, improved gait, and increased the rate of joint clearance, indicating it could be an effective approach to managing PTOA progression.
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Purpose: The present study aimed to evaluate the associations between the gut microbiome and psychoneurological symptoms (PNS) cluster in women with gynecologic cancers over time.

Methods: In this secondary data analysis, 19 women with cervical and endometrial cancers treated with radiotherapy were followed at pre-treatment, 6-8 weeks, and 6 months post-treatment. To measure symptoms, Functional Assessment of Cancer Therapy-General (FACT-G) and Patient Health Questionnaire-9 (PHQ-9) were used.

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Objectives: To evaluate the associations between social determinants of health (SDOH) and psychoneurologic symptom (PNS) clusters in women with gynecologic cancers during cancer treatment.

Sample & Setting: 67 women with gynecologic cancers who received radiation therapy were assessed at baseline, six to eight weeks after treatment, and six months after treatment at oncology clinics in Georgia.

Methods & Variables: Fatigue, pain, sleep disturbances, cognitive impairment, and depressive symptoms were measured to determine a PNS cluster score.

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  • Scientists are trying to make more of a special substance called indigoidine using a bacteria called Pseudomonas putida.
  • They used a method that links the bacteria's growth to how much indigoidine it makes, testing over 4,100 possible ways to do this.
  • After many experiments, they created a version of the bacteria that makes a lot of indigoidine using a plant chemical called para-coumarate, showing that their approach works well for different settings and products.
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Background: Psoriasis imposes a substantial burden on patients' social, emotional, physical, and family life. Although psoriasis has no complete cure, various treatments are available to control its symptoms and improve a patients' quality of life.

Objective: We aimed to compare the effectiveness of biologic versus non-biologic treatments on health-related quality of life among patients with psoriasis in Malaysia.

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Pseudomonas putida has emerged as a promising host for the conversion of biomass-derived sugars and aromatic intermediates into commercially relevant biofuels and bioproducts. Most of the strain development studies previously published have focused on P. putida KT2440, which has been engineered to produce a variety of non-native bioproducts.

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Engineered cyanobacterium Synechococcus elongatus can use light and CO to produce sucrose, making it a promising candidate for use in co-cultures with heterotrophic workhorses. However, this process is challenged by the mutual stresses generated from the multispecies microbial culture. Here we demonstrate an ecosystem where S.

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Corynebacterium glutamicum, a natural glutamate-producing bacterium adopted for industrial production of amino acids, has been extensively explored recently for high-level biosynthesis of amino acid derivatives, bulk chemicals such as organic acids and short-chain alcohols, aromatics, and natural products, including polyphenols and terpenoids. Here, we review the recent advances with a focus on biosystem design principles, metabolic characterization and modeling, omics analysis, utilization of nonmodel feedstock, emerging CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats) tools for Corynebacterium strain engineering, biosensors, and novel strains of C. glutamicum.

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Purpose/objective: Given the rarity of vulvar cancer, data on the incidence of acute and late severe toxicity and patients' symptom burden from radiotherapy (RT) are lacking.

Materials/methods: This multi-center, single-institution study included patients with vulvar squamous cell carcinoma treated with curative intent RT between 2009 and 2020. Treatment-related acute and late grade ≥ 3 toxicities and late patient subjective symptoms (PSS) were recorded.

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In this study, a 14-gene edited KT2440 strain for heterologous indigoidine production was examined using three distinct omic datasets. Transcriptomic data indicated that CRISPR/dCpf1-interference (CRISPRi) mediated multiplex repression caused global gene expression changes, implying potential undesirable changes in metabolic flux. C-metabolic flux analysis (C-MFA) revealed that the core flux network after CRISPRi repression was conserved, with moderate reduction of TCA cycle and pyruvate shunt activity along with glyoxylate shunt activation during glucose catabolism.

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Rhabdomyosarcoma (RMS) is a common childhood cancer that shares features with developing skeletal muscle. Yet, the conservation of cellular hierarchy with human muscle development and the identification of molecularly defined tumor-propagating cells has not been reported. Using single-cell RNA-sequencing, DNA-barcode cell fate mapping and functional stem cell assays, we uncovered shared tumor cell hierarchies in RMS and human muscle development.

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Background: Emerging critical care systems have gained little attention in low- and middle-income countries. In sub-Saharan Africa, only 4% of the healthcare workforce is trained in critical care, and mortality rates are unacceptably high in this patient population.

Objectives: We sought to retrospectively describe the knowledge acquisition and confidence improvement of practitioners who attend the Fundamental Critical Care Support (FCCS) course in Rwanda.

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Single-use plastic production is higher now than ever before. Much of this plastic is released into aquatic environments, where it is eventually weathered into smaller nanoscale plastics. In addition to potential direct biological effects, nanoplastics may also modulate the biological effects of hydrophobic persistent organic legacy contaminants (POPs) that absorb to their surfaces.

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Article Synopsis
  • The study focuses on a genetically engineered microbial strain (BRC-JBEI 1.1.2) that efficiently produces bioproducts such as amino acids and biofuels.
  • Researchers resequenced the strain and analyzed how gene expression changes when transitioning from shake flasks to bioreactors, especially when exposed to an ionic liquid called cholinium lysinate.
  • Findings revealed distinct metabolic and regulatory responses essential for growth in industrial settings, along with variations in the accumulation of organic acids and bioproducts, enhancing our understanding of the engineered strain's performance in bioproduction.
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  • Postmenopausal women and gynecologic cancer survivors frequently face vaginal issues, like pain and dysfunction, which can be aggravated by cancer treatments and lead to long-term problems.
  • The study revealed that gynecologic cancer patients have distinct vaginal microbiome (VM) profiles, characterized by lower lactobacilli levels and more pathological bacteria, and these differences become more pronounced over time post-treatment.
  • Symptoms such as vaginal pain and inflammation were common among cancer patients, with 24% experiencing persistent symptoms, compared to 12% of healthy women, highlighting the need for understanding the impact of the vaginal microbiome on these issues.
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Background: Hand hygiene is paramount in preventing the spread of healthcare-associated infections especially during disease epidemics. Compliance rates with hand hygiene policies remain below 50% internationally and may be lower in the outpatient care setting. This study assessed the impact of the patient empowerment model on hand hygiene compliance among healthcare providers.

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