The effect of stress factors on the spontaneous photon emission from microorganisms

Tilbury, R. N.

doi:10.1007/bf01947991

Cited by 32 publications

(28 citation statements)

References 55 publications

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“…This ultraweak photon emission comprises various ranges of wavelengths including infrared, visible, and ultraviolet ranges. Visible region biophoton emission is attributed to excited carbonyl groups and singlet oxygen dimers formed during the decomposition of lipid hydroperoxides (Tilbury, 1992). Moreover, chromophoric aromatic amino acids (tryptophan, tyrosine, etc.…”

Section: Introductionmentioning

confidence: 99%

Visual perception and imagery: A new molecular hypothesis

Bókkon

2009

Biosystems

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Here, we put forward a redox molecular hypothesis about the natural biophysical substrate of visual perception and visual imagery. This hypothesis is based on the redox and bioluminescent processes of neuronal cells in retinotopically organized cytochrome oxidaserich visual areas. Our hypothesis is in line with the functional roles of reactive oxygen and nitrogen species in living cells that are not part of haphazard process, but rather a very strict mechanism used in signaling pathways. We point out that there is a direct relationship between neuronal activity and the biophoton emission process in the brain. Electrical and biochemical processes in the brain represent sensory information from the external world. During encoding or retrieval of information, electrical signals of neurons can be converted into synchronized biophoton signals by bioluminescent radical and non-radical processes. Therefore, information in the brain appears not only as an electrical (chemical) signal but also as a regulated biophoton (weak optical) signal inside neurons.During visual perception, the topological distribution of photon stimuli on the retina is represented by electrical neuronal activity in retinotopically organized visual areas. These retinotopic electrical signals in visual neurons can be converted into synchronized biophoton signals by radical and non-radical processes in retinotopically organized mitochondrial-rich areas. As a result, regulated bioluminescent biophotons can create intrinsic pictures (depictive representation) in retinotopically organized cytochrome oxidase-rich visual areas during visual imagery and visual perception. The long-term visual memory is interpreted as epigenetic information regulated by free radicals and redox processes. This hypothesis does not claim to solve the secret of consciousness, but proposes that the evolution of higher levels of complexity made the intrinsic picture representation of the external visual world possible by regulated redox and bioluminescent reactions in the visual system during visual perception and visual imagery.

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Section: Introductionmentioning

confidence: 99%

Visual perception and imagery: A new molecular hypothesis

Bókkon

2009

Biosystems

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“…Thus two series of experiments were planned searching for evidence of fatty acid peroxidation . The aim was to quantify peroxide value and lipoperoxide breakdown products such as accumulation of malonyl dialdehyde (MDA) or photo-emissive species associated with the final stage of lipid peroxidation in microorganisms (reviewed by Tilbury 1992) .…”

Section: Resultsmentioning

confidence: 99%

UV-A Oxidative Damage Modified by Environmental Conditions inEscherichia Coli

Pizarro

1995

International Journal of Radiation Biology

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The effect of sublethal fluences (50-200 kJ m-2) of UV-A radiation (320-400 nm) in bacterial cells is a transient growth inhibition related to photo-modified tRNA and is associated with changes in membrane structure and function. Higher UV-A fluences result in cell death due to the production of reactive oxygen species, so far undetected at sublethal doses. Oxidative mechanisms of toxicity induced by 120 kJ m-2 UV-A radiation can be recorded by ultra-weak chemiluminescence, useful in quantifying oxidative reactions. When Escherichia coli was exposed to UV-A stress at a fluence rate equivalent to that of the Sun in the biosphere (33 W m-2), chemiluminescence levels were proportional to the photodamage. Chemiluminescence and photo-damage are linearly proportional and dependent on environmental conditions of the cells. It is postulated that in addition to tRNA photo-modification, UV-A alters the membrane structure of E. coli by oxidative damage, since changes in the membrane structure under different environmental conditions play a key role in the cell's response to UV-A injury.

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“…lactis SÜSSMUTH, 1998aSÜSSMUTH, , 1998bSÜSSMUTH, , , 1999aSÜSSMUTH, , 1999bGUO;SÜSSMUTH, 1998). Outros trabalhos discorrem sobre mecanismos de defesa dos micro-organismos quando submetidos ao estresse físico-químico (TILBURY, 1992) e à origem da emissão de luz (TRUSHIN, 2003b(TRUSHIN, , 2003c(TRUSHIN, , 2003d.…”

Section: Cescens Deinococcus Radiodurans Proteus Vulgaris E Lactocounclassified

“…Investigações realizadas por Tilbury (1992) NMP/100 mL de coliformes totais e 4,65x10 6 NMP/100 mL de Escherichia coli) e no ensaio t03 (com 6,83x10 7 NMP/100 mL coliformes totais e 1,00x10 7 NMP/100 mL de Escherichia coli) verifica-se que os comportamentos foram semelhantes.…”

Section: Comportamentos Biofotônicos Em Amostras De Esgoto Sanitáriounclassified

Detecção de emissão espontânea de luz em ensaios de colimetria aplicados ao monitoramento de efluentes sanitários

Santos

Paterniani

Gallep

2011

Eng. Sanit. Ambient.

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No presente trabalho avaliou-se o potencial do emprego da técnica biofotônica ao monitoramento da qualidade microbiológica de efluentes sanitários, por meio da detecção de emissão ultrafraca de luz em testes envolvendo bactéria do grupo coliforme. Foram acompanhados os padrões de emissão de luz em câmara escura com o uso de efluente doméstico, antes e após tratamento, incubados em meio nutritivo à base de lactose e lauril triptose. O controle foi efetuado com o uso de cepa de Escherichia coli (ATCC 25.922), tendo seu crescimento sido monitorado por emissão de luz em câmara escura com fotomultiplicador acoplado. Os dados demonstraram que o monitoramento microbiológico pode ser efetuado por meio técnica biofotônica, podendo ser aplicado, com respostas rápidas, ao monitoramento microbiológico de efluentes, por meio de testes envolvendo coliformes.

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The effect of stress factors on the spontaneous photon emission from microorganisms

Cited by 32 publications

References 55 publications

Visual perception and imagery: A new molecular hypothesis

Visual perception and imagery: A new molecular hypothesis

UV-A Oxidative Damage Modified by Environmental Conditions inEscherichia Coli

Detecção de emissão espontânea de luz em ensaios de colimetria aplicados ao monitoramento de efluentes sanitários

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