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Related Concept Videos

Human Genetics01:28

Human Genetics

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Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
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Obesity01:24

Obesity

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The Body Mass Index (BMI) is a numerical value derived from a person's weight and height, used to categorize individuals into weight ranges. It is calculated using the formula: weight in kilograms divided by height in meters squared. Obesity is a health condition characterized by excessive accumulation of adipose tissue that poses health risks, often diagnosed with a BMI ≥ 30. This excess fat storage occurs when surplus dietary calories are converted into triglycerides and stored in...
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Inborn Errors of Metabolism01:20

Inborn Errors of Metabolism

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Phenylketonuria (PKU) is a protein metabolism disorder characterized by high blood levels of the amino acid phenylalanine. This results from a mutation in the gene responsible for phenylalanine hydroxylase, an enzyme that converts phenylalanine into tyrosine. When this enzyme is deficient, phenylalanine builds up in the blood, leading to symptoms such as vomiting, rashes, seizures, growth deficiency, and severe mental retardation. An early diagnosis and a diet restricting phenylalanine intake...
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Genomic Imprinting and Inheritance02:30

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Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
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Bulimia Nervosa01:30

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Bulimia nervosa is a complex and severe eating disorder characterized by a cyclical pattern of binge-and-purge eating pattern. It generally involves an episode of binge eating, followed by compensatory behaviors such as vomiting, excessive exercise, laxative use, or fasting, to prevent weight gain. Despite often maintaining a normal weight, individuals with bulimia are intensely preoccupied with their body image and harbor an overwhelming fear of gaining weight. This can contribute to the...
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Incomplete Dominance01:43

Incomplete Dominance

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Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
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Related Experiment Video

Updated: May 29, 2025

Segmentation and Measurement of Fat Volumes in Murine Obesity Models Using X-ray Computed Tomography
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Management of Obesity-Related Genetic Disorders.

Romina Esbati1, Omid Yazdani2, Juliana Simonetti3

  • 1Department of Medicine, Division of Endocrinology, Diabetes and Hypternsion, Brigham and Women's Hospital, Boston, MA 02115, USA.

Endocrinology and Metabolism Clinics of North America
|February 7, 2025
PubMed
Summary

Genetic obesity disorders cause severe early-onset obesity due to mutations affecting hunger and energy balance. Improved diagnostics and treatments are crucial for managing these conditions.

Keywords:
Bardet-biedl syndromeHyperphagiaLEPRMC4RMetreleptinPOMCPrader-willi syndromeSetmelanotide

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Area of Science:

  • Genetics
  • Endocrinology
  • Metabolism

Background:

  • Obesity-related genetic disorders are characterized by severe, early-onset obesity.
  • Mutations disrupt biological mechanisms regulating hunger, energy balance, and fat storage.
  • The hypothalamic leptin-melanocortin signaling network, particularly the melanocortin-4 receptor (MC4R) pathway, is commonly affected.

Purpose of the Study:

  • To review current management strategies for genetic obesity disorders.
  • To explore emerging therapies for these conditions.
  • To emphasize the importance of expanded genetic diagnostics and tailored treatments.

Main Methods:

  • Literature review of genetic obesity disorders.
  • Analysis of current and novel therapeutic approaches.
  • Discussion of diagnostic advancements.

Main Results:

  • Genetic mutations significantly impact appetite regulation and energy homeostasis.
  • The MC4R pathway is a key target in genetic obesity.
  • Current management focuses on lifestyle and pharmacotherapy, with emerging targeted treatments.

Conclusions:

  • Effective management requires a combination of early diagnosis and personalized treatment strategies.
  • Advancements in genetic diagnostics are vital for identifying affected individuals.
  • Emerging therapies offer new hope for improving outcomes in genetic obesity.