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Related Concept Videos

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.
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation,...
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Cystic Fibrosis: Management01:24

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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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Liver Histology01:27

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The microscopic anatomy of the liver is a complex and intricate system that comprises numerous structural units known as liver lobules, each of which is comparable in size to a sesame seed. These hexagonal structures consist of plates of liver cells or hepatocytes, which are characterized by their versatility and abundance of cellular apparatus like rough and smooth ER, Golgi apparatus, peroxisomes, and mitochondria.
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Liver Physiology01:30

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The liver, an essential organ in the human body, performs over 200 vital functions that can be broadly categorized into metabolic, hematological, endocrine regulation, and bile production.
Metabolic Regulation:
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The liver is an important organ in vertebrates that plays an essential role in metabolism. It is also responsible for storing and redistributing nutrients such as carbohydrates, fats, and vitamins in the body. Additionally, the liver releases bile salts which are critical for digesting food and eliminating toxic metabolites from the body.
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Rate laws describe the relationship between the rate of a chemical reaction and the concentration of its reactants. In a rate law, the rate constant k and the reaction orders are determined experimentally by observing how the rate of reaction changes as the concentrations of the reactants are changed. A common experimental approach to the determination of rate laws is the method of initial rates. This method involves measuring reaction rates for multiple experimental trials carried out using...
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The Dimethylnitrosamine Induced Liver Fibrosis Model in the Rat
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Liver Fibrosis Determination.

Michelle Lai1, Nezam H Afdhal1

  • 1Department of Medicine, Liver Center, Beth Israel Deaconess Medical Center, Harvard Medical School, 110 Francis Street, Suite 4A, Boston, MA 02215, USA.

Gastroenterology Clinics of North America
|May 4, 2019
PubMed
Summary
This summary is machine-generated.

Noninvasive lab tests can identify patients with low risk of advanced liver fibrosis, avoiding the need for invasive liver biopsies. These accessible methods aid clinical decisions in managing chronic liver disease.

Keywords:
APRIELFFIB-4FibrosureFibrotestHepascoreLiver fibrosisNAFLD fibrosis score

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Area of Science:

  • Hepatology
  • Biomarker Discovery
  • Diagnostic Medicine

Background:

  • Chronic liver disease universally progresses to liver fibrosis.
  • Accurate fibrosis assessment is crucial for patient management.
  • Liver biopsy, while definitive, presents risks and limitations.

Purpose of the Study:

  • To evaluate accessible, noninvasive methods for liver fibrosis assessment.
  • To identify alternatives to liver biopsy for fibrosis staging.
  • To improve the identification of patients not requiring invasive procedures.

Main Methods:

  • Review of laboratory-based liver fibrosis determination methods.
  • Analysis of general clinical scoring systems for fibrosis.
  • Evaluation of combination biomarker panels for fibrosis detection.

Main Results:

  • Laboratory tests are broadly accessible to clinicians.
  • Clinical scoring systems and biomarker panels can identify low-risk patients.
  • These methods reduce the need for liver biopsies in select populations.

Conclusions:

  • Accessible laboratory tests offer a viable alternative to liver biopsy for fibrosis assessment.
  • Noninvasive biomarker panels can effectively stratify patients by fibrosis risk.
  • Wider implementation of these tests can improve chronic liver disease management.