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Related Concept Videos

Genomics02:02

Genomics

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Genomics is the science of genomes: it is the study of all the genetic material of an organism. In humans, the genome consists of information carried in 23 pairs of chromosomes in the nucleus, as well as mitochondrial DNA. In genomics, both coding and non-coding DNA is sequenced and analyzed. Genomics allows a better understanding of all living things, their evolution, and their diversity. It has a myriad of uses: for example, to build phylogenetic trees, to improve productivity and...
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Nuclear Stability03:18

Nuclear Stability

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Protons and neutrons, collectively called nucleons, are packed together tightly in a nucleus. With a radius of about 10−15 meters, a nucleus is quite small compared to the radius of the entire atom, which is about 10−10 meters. Nuclei are extremely dense compared to bulk matter, averaging 1.8 × 1014 grams per cubic centimeter. If the earth’s density were equal to the average nuclear density, the earth’s radius would be only about 200 meters.
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RNA Stability01:53

RNA Stability

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Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
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Power01:08

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The concept of work involves force and displacement; meanwhile, the work-energy theorem relates the net work done on a body to the difference in its kinetic energy, calculated between two points on its trajectory. While none of these quantities or relations involves time explicitly, we know that the time available to accomplish work is often just as important as the amount of work itself. For example, sprinters in a race may have achieved the same velocity at the finish, therefore,...
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Stability01:28

Stability

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The time response of a linear time-invariant (LTI) system can be divided into transient and steady-state responses. The transient response represents the system's initial reaction to a change in input and diminishes to zero over time. In contrast, the steady-state response is the behavior that persists after the transient effects have faded.
The stability of an LTI system is determined by the roots of its characteristic equation, known as poles. A system is stable if it produces a bounded...
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Genomic Imprinting and Inheritance02:30

Genomic Imprinting and Inheritance

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Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
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Laser-heating and Radiance Spectrometry for the Study of Nuclear Materials in Conditions Simulating a Nuclear Power Plant Accident
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Low power lasers on genomic stability.

Larissa Alexsandra da Silva Neto Trajano1, Luiz Philippe da Silva Sergio2, Ana Carolina Stumbo3

  • 1Laboratório de Pesquisa em Células Tronco, Departamento de Histologia e Embriologia, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro, Avenida 28 de Setembro, 87, fundos, Vila Isabel, Rio de Janeiro 20551030, Brazil; Laboratório de Biomorfologia e Patologia Experimental, Mestrado Profissional em Diagnóstico Clínico e Laboratorial em Medicina Veterinária, Universidade Severino Sombra, Avenida Expedicionário Oswaldo de Almeida Ramos, 280, Vassouras, Rio de Janeiro 27700000, Brazil.

Journal of Photochemistry and Photobiology. B, Biology
|February 18, 2018
PubMed
Summary
This summary is machine-generated.

Low power lasers may enhance cellular defenses against DNA damage by modulating DNA repair and telomere maintenance. This review explores their potential to improve therapeutic strategies against genotoxic agents.

Keywords:
Base excision repairGenomic stabilityLow power laserNucleotide excision repairTelomere

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Area of Science:

  • Molecular Biology
  • Genetics
  • Biophysics

Background:

  • Genotoxic agents induce DNA modifications, leading to genomic instability.
  • Cells possess DNA damage responses, including base excision repair and nucleotide excision repair pathways, to counteract lesions.
  • Telomere shortening is linked to diseases like cancer, highlighting the importance of genomic and telomere stability.

Purpose of the Study:

  • To review the effects of low power lasers on genomic and telomere stabilization.
  • To explore the potential of low power lasers in improving therapeutic protocols against DNA-damaging agents.

Main Methods:

  • Review of existing studies on laser-induced effects on genome and telomere stabilization.
  • Analysis of how low power lasers modulate DNA repair mechanisms and telomere maintenance.

Main Results:

  • Low power laser exposure appears to modulate DNA repair mechanisms, telomere maintenance, and genomic stabilization.
  • Studies suggest these lasers can induce DNA repair pathways and influence telomere stability.

Conclusions:

  • Low power lasers show potential as therapeutic agents against DNA-harmful agents.
  • Modulation of DNA repair, telomere maintenance, and genomic stability are key mechanisms targeted by low power lasers.