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Isotopes and Radioisotopes01:28

Isotopes and Radioisotopes

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In the early 1900s, English chemist Frederick Soddy realized that an element could have atoms with different masses that were chemically indistinguishable. These different types are called isotopes — atoms of the same element that differ in mass. Isotopes differ in mass because they have different numbers of neutrons but are chemically identical because they have the same number of protons. Soddy was awarded the Nobel Prize in Chemistry in 1921 for this discovery.
An isotope containing...
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Radioactivity is a spontaneous disintegration of an unstable nuclide and is a random process, as all the nuclei in the sample do not decay simultaneously. The number of disintegrations per unit time is called the activity (A), which is directly proportional to the number of nuclei in the sample. The decay constant (λ) is an average probability of decay per nucleus in unit time.
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Nuclear Transmutation03:20

Nuclear Transmutation

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Nuclear transmutation is the conversion of one nuclide into another. It can occur by the radioactive decay of a nucleus, or the reaction of a nucleus with another particle. The first manmade nucleus was produced in Ernest Rutherford’s laboratory in 1919 by a transmutation reaction, the bombardment of one type of nuclei with other nuclei or with neutrons. Rutherford bombarded nitrogen-14 atoms with high-speed α particles from a natural radioactive isotope of radium and observed...
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Nuclear Export of mRNA02:31

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Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...
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Targeted Cancer Therapies02:57

Targeted Cancer Therapies

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The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
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Introduction to Nuclear Reprogramming01:14

Introduction to Nuclear Reprogramming

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Nuclear reprogramming is the process of switching gene expression of one cell type to that of another cell type, usually from a differentiated cell state to an undifferentiated cell state. Differentiation occurs during processes such as development and morphogenesis, tissue regeneration, and malignancy. Cells can also be artificially induced to reprogram their gene expression by techniques such as nuclear transfer, induced pluripotency, and cell fusion. Such techniques have many applications in...
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Radioactive Molecules 2021-2022.

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  • 1Department of Nuclear Medicine, Aalborg University Hospital, 9000 Aalborg, Denmark.

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Summary

This review covers radioactive molecules, focusing on their synthesis and applications. It highlights recent advancements in radiopharmaceutical development and imaging agents.

Area of Science:

  • Radiochemistry
  • Medicinal Chemistry
  • Molecular Imaging

Background:

  • Overview of radioactive molecules and their significance in scientific research.
  • Focus on publications within the journal *Molecules* during 2019-2020.
  • Editorial review scope encompassing synthesis and applications.

Discussion:

  • Analysis of trends in radioactive molecule research.
  • Exploration of novel synthetic methodologies for radiolabeling.
  • Discussion of emerging applications in diagnostics and therapeutics.

Key Insights:

  • Identification of key research areas and breakthroughs in the field.
  • Highlighting the growing importance of radiopharmaceuticals.
  • Summarizing advancements in molecular imaging agents.

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Outlook:

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  • The evolving role of *Molecules* in disseminating radiochemistry research.