Search Results for: transgenerational

An evolutionary view of transgenerational epigenetic inheritance

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This 2020 Swiss/German review mainly cited weed, worm, and yeast studies: “RNA interference-related mechanisms can mediate the deposition and transgenerational inheritance of specific chromatin modifications in a truly epigenetic fashion. Epigenetics was initially defined as any heritable change in gene expression patterns without changes in the DNA sequence. Now, epigenetic phenomena are often characterized as … Continue reading An evolutionary view of transgenerational epigenetic inheritance

An out-of-date review of epigenetic transgenerational inheritance

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This December 3, 2019, French review title was “Transgenerational Inheritance of Environmentally Induced Epigenetic Alterations during Mammalian Development”: “We attempt to summarize our current knowledge about the transgenerational inheritance of environmentally induced epigenetic changes. While the idea that information can be inherited between generations independently of the DNA’s nucleotide sequence is not new, the outcome … Continue reading An out-of-date review of epigenetic transgenerational inheritance

A transgenerational view of the rise in obesity

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This 2019 Washington State University rodent study found epigenetically inherited transgenerational effects in great-grand offspring due to their great-grandmothers’ toxicant exposures during pregnancy: “Previous studies found an increased susceptibility to obesity in F3 generation rats ancestrally exposed to the pesticide DDT, and an increase in a lean phenotype in the F3 generation rats ancestrally exposed … Continue reading A transgenerational view of the rise in obesity

Epigenetic transgenerational inheritance extends to the great-great-grand offspring

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This 2019 rodent study by the Washington State University labs of Dr. Michael Skinner continued to F4 generation great-great-grand offspring, and demonstrated that epigenetic inheritance mechanisms are similar to imprinted genes: “Epigenetic transgenerational inheritance potentially impacts disease etiology, phenotypic variation, and evolution. An increasing number of environmental factors from nutrition to toxicants have been shown … Continue reading Epigenetic transgenerational inheritance extends to the great-great-grand offspring

Transgenerational epigenetic inheritance of thyroid hormone sensitivity

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My 500th curation is a 2019 Portuguese human study of Azorean islanders: “This study demonstrates a transgenerational epigenetic inheritance in humans produced by exposure to high TH [thyroid hormone] in fetal life, in the absence of maternal influences secondary to thyrotoxicosis. The inheritance is along the male line. The present work took advantage of the … Continue reading Transgenerational epigenetic inheritance of thyroid hormone sensitivity

Transgenerational diseases caused by great-grandmother DDT exposure

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This 2019 rodent study from the labs of Dr. Michael Skinner at Washington State University found: “The exposure of a gestating female during fetal gonadal sex determination to DDT can promote the epigenetic transgenerational inheritance of obesity and disease. Transgenerational pathologies (F3 generation) of late puberty, obesity, testis, prostate, and multiple disease were observed in … Continue reading Transgenerational diseases caused by great-grandmother DDT exposure

Another important transgenerational epigenetic inheritance study

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This 2019 Washington State University rodent study from Dr. Michael Skinner’s lab found: “A cascade of epigenetic alterations initiated in the PGCs [primordial germ cells of F3 males] appears to be required to alter the epigenetic programming during spermatogenesis to modify the sperm epigenome involved in the transgenerational epigenetic inheritance phenomenon. Following fertilization there is … Continue reading Another important transgenerational epigenetic inheritance study

The transgenerational impact of Roundup exposure

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This 2019 Washington rodent study from Dr. Michael Skinner’s lab found adverse effects in the grand-offspring and great-grand-offspring following their ancestor’s exposure during pregnancy to the world’s most commonly used herbicide: “Using a transient exposure of gestating F0 generation female rats found negligible impacts of glyphosate on the directly exposed F0 generation, or F1 generation … Continue reading The transgenerational impact of Roundup exposure

Epigenetic transgenerational inheritance mechanisms that lead to prostate disease

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This 2019 Washington rodent study found: “Ancestral exposure to the toxicant vinclozolin induces an epigenetic transgenerational increase in susceptibility to prostate pathology in F3 [male great-grandchildren] generation rats. These results are in agreement with previous studies which found a transgenerational increase in rates of prostatic epithelial atrophy, cystic hyperplasia, and prostatitis in the transgenerational F3 … Continue reading Epigenetic transgenerational inheritance mechanisms that lead to prostate disease

Burying human transgenerational epigenetic evidence

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The poor substitutes for evidence in this 2018 US study guaranteed that human transgenerational epigenetically inherited effects wouldn’t be found in the generations that followed after prenatal diethylstilbestrol (DES) exposure: “A synthetic, nonsteroidal estrogen, DES was administered to pregnant women under the mistaken belief it would reduce pregnancy complications and losses. From the late 1930s … Continue reading Burying human transgenerational epigenetic evidence