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Mismatch Repair01:36

Mismatch Repair

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Mismatch Repair01:20

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Organisms are capable of detecting and fixing nucleotide mismatches that occur during DNA replication. This sophisticated process requires identifying the new strand and replacing the erroneous bases with correct nucleotides. Mismatch repair is coordinated by many proteins in both prokaryotes and eukaryotes.
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Overview of DNA Repair02:25

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In order to be passed through generations, genomic DNA must be undamaged and error-free. However, every day, DNA in a cell undergoes several thousand to a million damaging events by natural causes and external factors. Ionizing radiation such as UV rays, free radicals produced during cellular respiration, and hydrolytic damage from metabolic reactions can alter the structure of DNA. Damages caused include single-base alteration, base dimerization, chain breaks, and cross-linkage.
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One of the common DNA damages is the chemical alteration of single bases by alkylation, oxidation, or deamination. The altered bases cause mispairing and strand breakage during replication. This type of damage causes minimal change to the DNA double helix structure and can be repaired by the base excision repair (BER) pathways. BER corrects damaged DNA sequences by removing the damaged base and restoring the original base sequence using the complementary strand as a template.
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Murine Flexor Tendon Injury and Repair Surgery
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Blepharoptosis repair.

Catherine Y Liu1, Priyanka Chhadva, Pete Setabutr

  • 1Department of Ophthalmology, University of Illinois at Chicago, Chicago Illinois, USA.

Current Opinion in Otolaryngology & Head and Neck Surgery
|May 11, 2018
PubMed
Summary
This summary is machine-generated.

Recent advances in acquired aponeurotic blepharoptosis management focus on refining surgical techniques and understanding the underlying biomechanical and neurostimulatory mechanisms for improved ptosis repair outcomes.

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Area of Science:

  • Ophthalmology
  • Surgical Innovation

Background:

  • Acquired aponeurotic blepharoptosis is a common condition affecting eyelid function.
  • Current management strategies are continually evolving.

Purpose of the Study:

  • To review recent advancements in the understanding of acquired aponeurotic blepharoptosis mechanisms.
  • To summarize innovations in the surgical management of this condition.

Main Methods:

  • Literature review of recent studies on blepharoptosis.
  • Analysis of new surgical techniques and biomechanical research.

Main Results:

  • Refinement of established ptosis repair methods.
  • Expansion of techniques for complex and severe cases.
  • New insights into the biomechanical and neurostimulatory aspects of ptosis and its treatment.

Conclusions:

  • Recent innovations enhance current treatment paradigms for acquired aponeurotic blepharoptosis.
  • Understanding of ptosis mechanisms is advancing alongside surgical techniques.