G. Georgiev

ORCID: 0000-0003-0584-415X
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About
Contact & Profiles
Research Areas
  • Advanced Radiotherapy Techniques
  • Radiation Dose and Imaging
  • Breast Cancer Treatment Studies
  • Radiation Therapy and Dosimetry
  • Circadian rhythm and melatonin
  • Endometriosis Research and Treatment
  • Reproductive System and Pregnancy
  • Cytokine Signaling Pathways and Interactions
  • Medical Imaging Techniques and Applications
  • Genetics, Aging, and Longevity in Model Organisms
  • Lipid metabolism and biosynthesis
  • Radiation Detection and Scintillator Technologies
  • Childhood Cancer Survivors' Quality of Life
  • Pluripotent Stem Cells Research
  • Gut microbiota and health
  • Adipose Tissue and Metabolism
  • Acute Myeloid Leukemia Research
  • Endoplasmic Reticulum Stress and Disease
  • Neuroendocrine regulation and behavior
  • Spectroscopy and Quantum Chemical Studies
  • Nuclear reactor physics and engineering
  • Birth, Development, and Health
  • Lipid Membrane Structure and Behavior
  • Sphingolipid Metabolism and Signaling
  • Nuclear Materials and Properties

Sofia University "St. Kliment Ohridski"
1989-2024

Deutsches Elektronen-Synchrotron DESY
2024

Jacobs (United States)
2023

University of Arizona
2011-2016

Kozloduy Nuclear Power Plant
2012

Memorial Sloan Kettering Cancer Center
2011

The University of Texas MD Anderson Cancer Center
2009

Krankenhaus Jerusalem
2007

Institute of Mechanics
2006

Bulgarian Academy of Sciences
1976

Abstract A method for determination of molecular quantum yields fluorescent compounds in solution by internal calibration with the signal spontaneous Raman scattering solvent is proposed. An experimental verification carried out substances known and satisfactory agreement between results literature values obtained.

10.1080/00387018208067999 article EN Spectroscopy Letters 1982-01-01

Combinations of anti-cancer drugs can overcome resistance to therapy and provide new more effective treatments. In this work we have analyzed the effect polyphenol quercetin sphingosine analog fingolimod on sphingolipid metabolism in HepG2 cells, since sphingolipids are recognized as mediators cell proliferation apoptosis cancer cells. Treatment hepatocellular carcinoma cells with fingolimod, alone or combination, induced different degrees sphingomyelin (SM) reduction a corresponding...

10.3390/ijms232213916 article EN International Journal of Molecular Sciences 2022-11-11

Nonhealing wounds are a common complication in patients suffering from diabetes with hyperglycemia being the most deteriorating factor for this serious pathological condition. Despite great body of data, molecular mechanisms by which high glucose affects cellular physiology still poorly defined. Here we used primary human foreskin fibroblasts cultured normo- and hyperglycemic conditions to study leading altered cell contractility. Our results demonstrated that 25 mmol/L effectively reduced...

10.1080/13102818.2022.2041486 article EN cc-by Biotechnology & Biotechnological Equipment 2022-03-21

Melatonin (MEL) may influence the efficiency of reprogramming both by somatic cell nuclear transfer and direct induction pluripotent stem cells (iPSC) through a yet unidentified mechanism. Transcription factors linked to signalling be differentially expressed according differentiation status. To address effect MEL on expression transcription reprogramming, we used two distinct in vitro models cellular plasticity: human foreskin fibroblasts (HFF) primary granulosa-lutein (GLC). Real-time...

10.1080/13102818.2019.1571440 article EN cc-by Biotechnology & Biotechnological Equipment 2019-01-01

Human bestrophin-1 protein (hBest1) is a transmembrane channel associated with the calcium-dependent transport of chloride ions in retinal pigment epithelium as well glutamate and GABA nerve cells. Interactions between hBest1, sphingomyelins, phosphatidylcholines cholesterol are crucial for hBest1 association cell membrane domains its biological functions. As plays key role formation lipid rafts, motional ordering lipids modeling/remodeling lateral structure, we examined effect different...

10.3390/membranes11010052 article EN cc-by Membranes 2021-01-13

The polyphenol quercetin is associated with numerous beneficial health effects in various pathologies such as oxidative stress, neurodegenerative disorders, inflammation, neoplastic processes, age-related diseases, and so on. However, the molecular mechanisms underlying of its implication pharmaceutical practice require additional clarification. In this study we analyzed biochemical effect on membrane lipids fibroblasts cultured three-dimensional (3D) cultures, which resemble living tissues...

10.1080/13102818.2021.1939785 article EN cc-by Biotechnology & Biotechnological Equipment 2021-01-01

Abstract An R&D platform for electron FLASH radiation therapy and biology is being prepared at the Photo Injector Test facility DESY in Zeuthen (FLASH lab @PITZ). This based on unique beam parameters available PITZ: ps scale bunches of up to 22 MeV with 5 nC bunch charge MHz repetition rate trains 1 ms length repeating 10 Hz. It works together Technical University Applied Sciences Wildau (TH Wildau) as partner close vicinity biological resources. A startup beamline has been installed...

10.1088/1742-6596/2687/9/092006 article EN Journal of Physics Conference Series 2024-01-01

The studies of rejuvenation are important for promoting health and longevity, preventing age-related diseases, reducing economic burdens, improving quality life addressing the challenges posed by an aging global population. This review explores intersection aging, regeneration bioelectric fields examining emerging role membrane potential in processes like cell proliferation, differentiation, limb potentially aging. Manipulation opens a novel dimension to landscape offering alternative or...

10.1080/13102818.2024.2358999 article EN cc-by-nc Biotechnology & Biotechnological Equipment 2024-05-28

Immunological risk factors in recurrent pregnancy loss include autoantibodies, alterations NK cell number and function, regulatory T cells, the human leukocyte antigen system (HLA), etc., where treatment options aim to regulate immune dysfunction. Intralipid is a synthetic product traditionally used as dietary supplement consisting of soybean oil combined with refined egg phospholipids. It has been shown that intralipid exerts physiologic activities, including altering immunological...

10.3390/targets2040017 article EN Targets 2024-10-08
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