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Related Concept Videos

Continuous Renal Replacement Therapy01:30

Continuous Renal Replacement Therapy

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Continuous Renal Replacement Therapy, also known as CRRT, is a procedural treatment for acute kidney injury (AKI) that gradually removes uremic toxins and fluids while maintaining acid-base balance and stabilizing electrolytes. It is particularly useful for hemodynamically unstable patients. Unlike intermittent hemodialysis, which is faster, CRRT provides a gentler approach over 24 hours, closely mimicking the function of natural kidneys. However, CRRT is not ideal for patients with...
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Extracorporeal Removal of Drugs: Continuous Renal Replacement Therapy01:26

Extracorporeal Removal of Drugs: Continuous Renal Replacement Therapy

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Continuous Renal Replacement Therapy (CRRT) is an essential intervention for patients experiencing severe kidney dysfunction. This therapy offers a continuous mechanism for removing fluids and toxins from the bloodstream, leveraging the patient’s blood pressure to facilitate filtration through a specialized filter. This method contrasts with intermittent dialysis, providing a gentler and more consistent removal of waste products and excess fluid, which is particularly beneficial in...
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Animal Mitochondrial Genetics02:59

Animal Mitochondrial Genetics

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Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...
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Comparing Mitochondrial, Chloroplast, and Prokaryotic Genomes02:16

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The present-day mitochondrial and chloroplast genomes have retained some of the characteristics of their ancestral prokaryotes and also have acquired new attributes during their evolution within eukaryotic cells. Like prokaryotic genomes, mitochondrial and chloroplast genomes neither bind with histone-like proteins nor show complex packaging into chromosome-like structures, as observed in eukaryotes. Unlike mitotic cell divisions observed in eukaryotic cells, mitochondria and chloroplasts...
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Export of Mitochondrial and Chloroplast Genes02:19

Export of Mitochondrial and Chloroplast Genes

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A eukaryotic cell can have up to three different types of genetic systems: nuclear, mitochondrial, and chloroplast. During evolution, organelles have exported many genes to the nucleus; this transfer is still ongoing in some plant species. Approximately 18% of the Arabidopsis thaliana nuclear genome is thought to be derived from the chloroplast’s cyanobacterial ancestor, and around 75% of the yeast genome derived from the mitochondria’s bacterial ancestor. This export has occurred...
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Tumor Progression02:07

Tumor Progression

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Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
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Related Experiment Video

Updated: Feb 15, 2026

Preparation of Plasma Membrane Vesicles from Bone Marrow Mesenchymal Stem Cells for Potential Cytoplasm Replacement Therapy
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Progress in mitochondrial replacement therapies.

Mary Herbert1, Doug Turnbull1

  • 1Wellcome Centre for Mitochondrial Research, Institute of Genetic Medicine and Institute of Neurosciences, Newcastle University, Newcastle upon Tyne, UK.

Nature Reviews. Molecular Cell Biology
|January 24, 2018
PubMed
Summary
This summary is machine-generated.

Mitochondrial DNA mutations cause serious diseases and are passed down from mothers. Reproductive technologies offer a way to prevent the transmission of these harmful mutations to future generations.

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Related Experiment Videos

Last Updated: Feb 15, 2026

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Area of Science:

  • Genetics
  • Reproductive Medicine
  • Mitochondrial Biology

Background:

  • Mitochondrial DNA (mtDNA) is exclusively inherited from the mother.
  • Pathogenic mutations in mtDNA can lead to severe, life-limiting genetic disorders.
  • Current understanding of mtDNA inheritance patterns is crucial for genetic counseling.

Purpose of the Study:

  • To explore the potential of reproductive technologies to prevent the transmission of pathogenic mitochondrial DNA mutations.
  • To review recent advancements in mitochondrial replacement therapies.

Main Methods:

  • Review of current scientific literature on mitochondrial genetics and reproductive technologies.
  • Analysis of studies investigating mitochondrial replacement techniques.

Main Results:

  • Mitochondrial DNA is maternally inherited.
  • Pathogenic mutations in mtDNA are responsible for various debilitating conditions.
  • Reproductive technologies, such as mitochondrial replacement, show promise in preventing mutation transmission.

Conclusions:

  • Mitochondrial replacement therapies offer a potential strategy to avoid the inheritance of disease-causing mtDNA mutations.
  • These advanced reproductive techniques could prevent a range of serious genetic disorders in offspring.
  • Further research and clinical application of these technologies are warranted.