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Related Concept Videos

Gene-Environment Interactions01:20

Gene-Environment Interactions

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Gene expression is a dynamic process that is significantly influenced by environmental factors. This interaction underlies the complex nature of biological development and the phenotypic differences observed among individuals, even among those with identical genetic makeups. Factors such as radiation, temperature, behavior, nutrition, and stress play pivotal roles in determining how genes are expressed. The concept of the reaction range is central to understanding this interaction. It posits...
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Renal clearance plays a pivotal role in drug elimination from the body and can be influenced by drug distribution and interactions. Understanding these factors is crucial in pharmacology as they impact the effectiveness and duration of drug therapy.
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Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.
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The volume of distribution refers to the theoretical volume necessary to contain the entire amount of an administered drug at the same concentration observed in the blood plasma. The body's intracellular fluid compartment, which makes up two-thirds of the total body water, is contrasted with the extracellular fluid compartment—comprising plasma and interstitial fluid—that accounts for one-third. The volume of distribution can vary depending on the characteristics of the drug.
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F Distribution01:19

F Distribution

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The F distribution was named after Sir Ronald Fisher, an English statistician. The F statistic is a ratio (a fraction) with two sets of degrees of freedom; one for the numerator and one for the denominator. The F distribution is derived from the Student's t distribution. The values of the F distribution are squares of the corresponding values of the t distribution. One-Way ANOVA expands the t test for comparing more than two groups. The scope of that derivation is beyond the level of this...
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Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
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Vinyl Chloride and High-Fat Diet as a Model of Environment and Obesity Interaction
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Gene-Environment Interactions on Body Fat Distribution.

Xiang Li1, Lu Qi2,3

  • 1Department of Epidemiology, School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA 70112, USA.

International Journal of Molecular Sciences
|July 31, 2019
PubMed
Summary
This summary is machine-generated.

Rising obesity rates worldwide are linked to environmental factors and genetics. Gene-environment interactions significantly influence obesity and abdominal fat accumulation, impacting overall health.

Keywords:
body fat distributiongene–environment interactionobesity

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Area of Science:

  • Genetics and Environmental Health
  • Obesity Research
  • Human Physiology

Background:

  • Global obesity prevalence has surged, characterized by increased adiposity and harmful abdominal fat accumulation.
  • Obesogenic environments, marked by poor diet and sedentary lifestyles, drive obesity epidemics and detrimental fat distribution.
  • Genomics research is illuminating the genetic underpinnings of obesity and body fat distribution patterns.

Purpose of the Study:

  • To review recent discoveries concerning gene-environment interactions in obesity.
  • To summarize findings from observational studies and clinical trials on genetic and environmental influences on body fat.
  • To highlight the interplay between genetic variations and lifestyle factors in obesity and abdominal obesity.

Main Methods:

  • Review of recent observational studies.
  • Analysis of randomized clinical trials.
  • Synthesis of evidence on gene-environment interactions related to obesity.

Main Results:

  • Growing evidence supports interactions between genetic variations and environmental factors (diet, lifestyle) in obesity.
  • These interactions influence both overall adiposity and central (abdominal) obesity.
  • Recent research provides a deeper understanding of the genetic basis for body fat distribution.

Conclusions:

  • Gene-environment interactions are crucial determinants of obesity and body fat distribution.
  • Understanding these interactions is key to addressing the global obesity epidemic.
  • Future research should continue to explore genetic predispositions and environmental triggers for obesity.