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Cystic Fibrosis: Pathogenesis01:23

Cystic Fibrosis: Pathogenesis

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Cystic fibrosis (CF), an autosomal recessive disorder, significantly affects the function of exocrine glands. This genetically inherited disease is characterized by the production of thick and sticky mucus, which can severely affect various organs and systems in the body.
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Cystic fibrosis (CF) is an autosomal recessive disorder that predominantly affects individuals of Northern European descent, occurring at a rate of 1 in 3500. It is caused by a genetic mutation in a gene on chromosome 7, most commonly the ΔF508 mutation, that codes for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. This results in thicker mucus secretions and obstruction pathologies in multiple organs, including the lungs and sinuses.
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Initiation of Translation02:33

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Initiating translation is complex because it involves multiple molecules. Initiator tRNA, ribosomal subunits, and eukaryotic initiation factors (eIFs) are all required to assemble on the initiation codon of mRNA. This process consists of several steps that are mediated by different eIFs.
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Before a cell can divide, it must accurately replicate all of its chromosomes, including the DNA and its associated histone and non-histone proteins.  This process begins at numerous origins of replication during the S phase of the cell cycle in each of a cell’s chromosomes simultaneously. Certain nucleotides can act as origins of replication, but these sequences are not well defined - especially in complex, multi-cellular, eukaryotic species. The length of DNA that spans an origin...
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Brazilian consensus on non-cystic fibrosis bronchiectasis.

Mônica Corso Pereira1, Rodrigo Abensur Athanazio2, Paulo de Tarso Roth Dalcin3,4

  • 1. Departamento de Clínica Médica, Faculdade de Ciências Médicas, Universidade Estadual de Campinas - UNICAMP - Campinas (SP) Brasil.

Jornal Brasileiro De Pneumologia : Publicacao Oficial Da Sociedade Brasileira De Pneumologia E Tisilogia
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Summary

This expert consensus document provides a comprehensive overview of non-cystic fibrosis bronchiectasis in Brazil. It synthesizes current knowledge on diagnosis, pathophysiology, and treatment for this chronic airway condition.

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Area of Science:

  • Pulmonology
  • Respiratory Medicine
  • Medical Consensus

Background:

  • Bronchiectasis is increasingly diagnosed via chest HRCT.
  • It is categorized into cystic fibrosis and non-cystic fibrosis types.
  • Patients typically present with chronic airway symptoms and recurrent infections.

Purpose of the Study:

  • To systematize accumulated knowledge on non-cystic fibrosis bronchiectasis in Brazil.
  • To provide an expert consensus document due to insufficient evidence for recommendations.
  • To critically assess scientific evidence and international guidelines.

Main Methods:

  • A nonsystematic literature review was conducted by 10 expert pulmonologists.
  • Focus was on original articles, review articles, and systematic reviews.
  • The review covered pathophysiology, diagnosis, monitoring, treatment, and exacerbation management.

Main Results:

  • The document addresses key aspects of bronchiectasis heterogeneity.
  • It offers insights into diagnostic and therapeutic management strategies.
  • Expert consensus was reached on various topics related to the condition.

Conclusions:

  • This consensus document represents the first review of its kind in Brazil.
  • It aims to guide the understanding and management of non-cystic fibrosis bronchiectasis.
  • It highlights the need for continued research and evidence-based recommendations.