214,117 results match your criteria: "Department of Molecular Genetics and Microbiology; Stony Brook University; Stony Brook[Affiliation]"

Recovery of Phenolic Compounds with Antioxidant Capacity Through Solid-State Fermentation of Pistachio Green Hull.

Microorganisms

December 2024

Biotechnology and Bioengineering Laboratory, Centro de Investigación en Alimentación y Desarrollo, Delicias 33089, Chihuahua, Mexico.

Pistachio green hull (PGH) represents the non-edible fraction obtained after the seed is harvested and is an important source of phenolic compounds. Solid-state fermentation (SSF) is a viable biotechnological and economical technique for extracting phenolic compounds. This study aimed to evaluate the SSF with GH1 to recover total phenolic compounds (TPC) with antioxidant capacity (AC) from PGH.

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Male reproductive health is governed by an intricate interplay of genetic, epigenetic, and environmental factors. Epigenetic mechanisms-encompassing DNA methylation, histone modifications, and non-coding RNA activity-are crucial both for spermatogenesis and sperm maturation. However, oxidative stress, driven by excessive reactive oxygen species, disrupts these processes, leading to impaired sperm function and male infertility.

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Arid ecosystems constitute a promising source of actinobacteria producing new bioactive molecules. This study aimed to explore different biological activities of actinomycetes isolated from the rhizosphere of L. in the Ghardaia region, Algeria.

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HBV cccDNA: The Molecular Reservoir of Hepatitis B Persistence and Challenges to Achieve Viral Eradication.

Biomolecules

January 2025

Department of Gastroenterology and Hepatology, Erasmus Medical Center, Wytemaweg 80, 3015CN Rotterdam, The Netherlands.

Hepatitis B virus (HBV) is a major global health issue, with an estimated 254 million people living with chronic HBV infection worldwide as of 2022. Chronic HBV infection is the leading cause of cirrhosis and liver cancer. Current treatment with nucleos(t)ide analogs is effective in the suppression of viral activity but generally requires lifelong treatment.

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The species (Cuvier, 1829) is the only representative of the family Niphonidae and the genus , and its taxonomic history is complicated; it is still unclear in a phylogenetic sense. In this study, we report the complete mitochondrial genome of (OP391482), which was determined to be 16,503 bp long with biased A + T contents (53.8%) using next-generation technology.

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The Difference a Year Can Make: How Antibiotic Resistance Mechanisms in Have Changed in Northwestern Transylvania.

Biomolecules

December 2024

Department of Molecular Biology and Biotechnology, Faculty of Biology and Geology, Babeș-Bolyai University, 1 M. Kogalniceanu Street, 400084 Cluj-Napoca, Romania.

This study examines the prevalence and the mechanisms of antibiotic resistance in isolates collected from healthcare units in Northwestern Transylvania, Romania, between 2022 and 2023. Given the alarming rise in antibiotic resistance, the study screened 34 isolates for resistance to 10 antibiotics, 46 ARGs, and integrase genes using PCR analysis. The results reveal a concerning increase in multidrug-resistant (MDR) and extensively drug-resistant (XDR) isolates over the two-year period.

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Antimicrobial-producing strains and their bacteriocins hold great promise for the control of bacterial diseases, being an attractive alternative to antibiotics. Thus, the aim of this study was to evaluate the inhibitory activity of 15 bacteriocin-producing staphylococci and mammaliicocci (BP-S/M) strains and their pre-purified extracts with butanol (BT) against a collection of 27 harmful or zoonotic strains (including Gram-positive/-negative bacteria and molds) with relevance in the public health and agro-food fields. These indicators (excluding Gram-negative strains) were grouped into seven categories based on their potential application areas: dairy livestock mastitis, avian pathogen zoonoses, swine zoonoses, food safety, aquaculture, wine making, and mushroom cultivation.

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A Predicted Helix-Turn-Helix Core Is Critical for Bacteriophage Kil Peptide to Disrupt Cell Division.

Antibiotics (Basel)

January 2025

Department of Microbiology and Molecular Genetics, UTHealth-Houston, Houston, TX 77030, USA.

: FtsZ, a eukaryotic tubulin homolog and an essential component of the bacterial divisome, is the target of numerous antimicrobial compounds as well as proteins and peptides, most of which inhibit FtsZ polymerization dynamics. We previously showed that the Kil peptide from bacteriophage λ inhibits cell division by disrupting FtsZ ring assembly, and this inhibition requires the presence of the essential FtsZ membrane anchor protein ZipA. : To investigate Kil's molecular mechanism further, we employed deletions, truncations, and molecular modeling to identify the minimal residues necessary for its activity.

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Background/objectives: This study aims to characterize antibiotic resistance (AR) and virulence markers in spp. isolated from Romanian outpatients' stool samples.

Methods: In 2019, community-acquired strains were collected and identified using MALDI-TOF mass spectrometry, antibiotic susceptibility profiles have been determined with the MicroScan system, and soluble virulence factors were evaluated using specific culture media, while biofilm formation was quantified in 96-well plates.

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: Infections caused by multidrug-resistant (MDR)bacteria pose a significant public health threat by worsening patient outcomes, contributing to hospital outbreaks, and increasing health and economic burdens. Advanced genomic tools enhance the detection of resistance genes, virulence factors, and high-risk clones, thus improving the management of MDR infections. In the Autonomous Community of Aragon, the diversity and incidence of carbapenemase-producing Enterobacteriaceae (CPE) have increased during the last years.

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Standardization of the Agar Plate Method for Bacteriophage Production.

Antibiotics (Basel)

December 2024

Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 08826, Republic of Korea.

The growing threat of antimicrobial resistance (AMR), exacerbated by the COVID-19 pandemic, highlights the urgent need for alternative treatments such as bacteriophage (phage) therapy. Phage therapy offers a targeted approach to combat bacterial infections, particularly those resistant to conventional antibiotics. This study aimed to standardize an agar plate method for high-mix, low-volume phage production, suitable for personalized phage therapy.

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The epidermal growth factor receptor (EGFR) regulates gene expression through two primary mechanisms: as a growth factor in the nucleus, where it translocates upon binding its ligand, or via its intrinsic tyrosine kinase activity in the cytosol, where it modulates key signaling pathways such as RAS/MYC, PI3K, PLCγ, and STAT3. During tumorigenesis, these pathways become deregulated, leading to uncontrolled proliferation, enhanced migratory and metastatic capabilities, evasion of programmed cell death, and resistance to chemotherapy or radiotherapy. The and oncogenes are pivotal in tumorigenesis, driving processes such as resistance to apoptosis, replicative immortality, cellular invasion and metastasis, and metabolic reprogramming.

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: Metered-dose inhalers (MDIs) and dry powder inhalers (DPIs) are common inhaled corticosteroid (ICS) inhaler devices. The difference in formulation and administration technique of these devices may influence oral cavity microbiota composition. We aimed to compare the saliva microbiome in children with moderate-to-severe asthma using ICS via MDIs versus DPIs.

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Sepsis is a major cause of patient death in intensive care units (ICUs). Rapid diagnosis of sepsis assists in optimizing treatments and improves outcomes. Several biomarkers are employed to aid in the diagnosis, prognostication, severity grading, and sub-type discrimination of severe septic infections (SSIs), including current diagnostic parameters, hemostatic measures, and specific organ dysfunction markers.

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Performance analysis of Leica Biosystems p16 monoclonal antibody in oropharyngeal squamous cell carcinoma.

Diagn Pathol

January 2025

Medical and Scientific Affairs, Leica Biosystems Richmond Inc. 5205 US, Highway 12, Richmond, IL, 60071, US.

Background: Head and neck squamous cell carcinoma (HNSCC) is the sixth leading cause of cancer death globally, with newly diagnosed oropharyngeal squamous cell carcinoma (OPSCC) cases rising to 54,000 in the US alone in the year 2022. Recently, human papilloma virus (HPV) infection was more prevalent in OPSCC patients than the traditionally known carcinogens such as tobacco or alcohol. HPV 16 is the most common causative HPV strain, which is found in 5-10% of HNSCC patients.

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Background: Fungal invasive infections caused by Candida species pose a substantial public health risk with limited therapeutic options. Antifungal susceptibility testing (AFST) is necessary to optimize the therapy. The study aimed to compare different AFST methods of Candida spp.

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Engineering the future of medicine: Natural products, synthetic biology and artificial intelligence for next-generation therapeutics.

Clin Transl Med

February 2025

Synthetic Biology of Microbial Natural Products, Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), PharmaScienceHub (PSH), Saarbrücken, Germany.

The eXchange Unit between Thiolation domains approach and artificial intelligence (AI)-driven tools like Synthetic Intelligence are transforming nonribosomal peptide synthetase and polyketide synthase engineering, enabling the creation of novel bioactive compounds that address critical challenges like antibiotic resistance and cancer. These innovations expand chemical space and optimize biosynthetic pathways, offering precise and scalable therapeutic solutions. Collaboration across synthetic biology, AI, and clinical research is essential to translating these breakthroughs into next-generation treatments and revolutionizing drug discovery and patient care.

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Amoebas: the omnipotent organism and silent assassin.

Mol Biol Rep

January 2025

Exercise Applied Physiology Laboratory, Biomedical Department, Research Center in High Altitude Medicine and Physiology, Faculty of Health Sciences, University of Antofagasta, Antofagasta, Chile.

Amoebas are characterized by their unique ability to exist both as free-living organisms and, occasionally, as parasites within host tissues, earning them the designation 'amphizoic amoebae'. While amoebic infections are less prevalent, their health impact can be tremendous, leading to several diseases. In low-income countries, poor sanitation and socioeconomic conditions significantly increase the risk of amoebic infections, particularly E.

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We investigated the role of uric acid in the pathogenesis of severe malaria (SM) in two independent cohorts of children with SM. Hyperuricemia (blood uric acid ≥ 7 mg dl) was present in 25% of children with SM and was associated with increased in-hospital mortality and postdischarge mortality in both cohorts. Increased blood uric acid levels were also associated with worse scores in overall cognition in children with SM < 5 years old in both cohorts.

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Curcumin enhances the anti-obesogenic activity of orlistat through SKN-1/NRF2-dependent regulation of nutrient metabolism in Caenorhabditis elegans.

Int J Obes (Lond)

January 2025

Laboratory of Metabolomics, Department of Biotechnology, Institute of Microbiology, Bulgarian Academy of Sciences, 139 Ruski Blvd., 4000, Plovdiv, Bulgaria.

Background: Metabolic dysregulation, a defining feature of obesity, disrupts essential signalling pathways involved in nutrient sensing and mitochondria homeostasis. The nuclear factor erythroid 2-related factor 2 (NRF-2) serves as a pivotal regulator of the cellular stress response, and recent studies have implicated it in the pathogenesis of obesity, diabetes, and metabolic syndrome. Curcumin, a polyphenolic compound derived from turmeric, has been identified as a potent activator of NRF-2.

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Roles of human papillomavirus in cancers: oncogenic mechanisms and clinical use.

Signal Transduct Target Ther

January 2025

Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China.

Human papillomaviruses, particularly high-risk human papillomaviruses, have been universally considered to be associated with the oncogenesis and progression of various cancers. The genome of human papillomaviruses is circular, double-stranded DNA that encodes early and late proteins. Each of the proteins is of crucial significance in infecting the epithelium of host cells persistently and supporting viral genome integrating into host cells.

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Cestodes of the genus Spirometra are multi-host parasites that are the causative agents of spirometrosis in domestic and wild carnivores and sparganosis in humans, endemic diseases in tropical and subtropical regions. In domestic animals, the infection is usually asymptomatic or produces gastrointestinal signs such as vomiting and chronic diarrhoea. In humans, an incidental parasitosis develops where the plerocercoid can lodge in tissues and cause a variety of symptoms, including neuropathies, blindness, paralysis, and death.

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Dermanyssus gallinae (D. gallinae) is a nocturnal, blood-feeding ectoparasite that primarily infests poultry, causing significant economic losses. This study aimed to identify poultry red mites and detect associated pathogens using morphological and molecular techniques.

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Objective: Molecular testing for high-risk human papillomavirus (hrHPV) genotypes is important for cervical cancer screening. In this study, we compared the HPV detection rates using real-time PCR in cervical samples collected using two different liquid-based cytology (LBC) kits.

Methods: Cervical swab specimens were prospectively collected using the SurePath and EASYPREP collection kits.

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Plant secondary metabolites against biotic stresses for sustainable crop protection.

Biotechnol Adv

January 2025

State Key Laboratory of Crop Gene Resources and Breeding/Key laboratory for Grain Crop Genetic Resources Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, PR China; Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China. Electronic address:

Sustainable agriculture practices are indispensable for achieving a hunger-free world, especially as the global population continues to expand. Biotic stresses, such as pathogens, insects, and pests, severely threaten global food security and crop productivity. Traditional chemical pesticides, while effective, can lead to environmental degradation and increase pest resistance over time.

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