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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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Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...
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Cannabis and Paternal Epigenetic Inheritance.

Filomena Mazzeo1,2, Rosaria Meccariello3,4

  • 1Dipartimento di Scienze Economiche, Giuridiche, Informatiche e Motorie, Università di Napoli Parthenope, Nola, 80035 Naples, Italy.

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Cannabis use, particularly delta-9-tetrahydrocannabinol (Δ⁹-THC), may harm male reproductive health. Emerging evidence suggests potential long-term epigenetic risks for users and their offspring.

Keywords:
cannabisendocannabinoid systemepigeneticsreproductionspermatozoatestis

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Area of Science:

  • Reproductive Biology
  • Endocrinology
  • Toxicology

Background:

  • Cannabis is a widely used illicit substance, with high abuse rates among young males.
  • The primary psychoactive component, delta-9-tetrahydrocannabinol (Δ⁹-THC), impacts the endogenous endocannabinoid system.
  • This system regulates crucial biological functions, including male gamete formation.

Purpose of the Study:

  • To review current understanding of cannabis's effects on male reproduction.
  • To highlight potential long-term reproductive health risks associated with cannabis use.
  • To discuss the role of epigenetic mechanisms in these effects.

Main Methods:

  • Literature review of studies on cannabis and male reproduction.
  • Analysis of research on Δ⁹-THC's impact on the endocannabinoid system.
  • Examination of evidence for epigenetic alterations.

Main Results:

  • Direct adverse effects of Δ⁹-THC on male reproductive health are established in animal models and humans.
  • Recent findings indicate potential for long-term consequences via epigenetic modifications.
  • These epigenetic changes may affect the reproductive health of cannabis users.

Conclusions:

  • Cannabis use poses known direct risks to male fertility.
  • Emerging research points to significant, long-term epigenetic risks for male reproductive health.
  • Further attention is needed regarding the transgenerational epigenetic health impacts on offspring.