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Age-associated alterations to sperm ...

Jenkins, Timothy Gerald.

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Age-associated alterations to sperm DNA methylation and possible consequences on the offspring.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Age-associated alterations to sperm DNA methylation and possible consequences on the offspring./
作者:	Jenkins, Timothy Gerald.
面頁冊數:	82 p.
附註:	Source: Dissertation Abstracts International, Volume: 75-04(E), Section: B.
Contained By:	Dissertation Abstracts International75-04B(E).
標題:	Biology, Physiology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3607708
ISBN:	9781303653773

Age-associated alterations to sperm DNA methylation and possible consequences on the offspring.
Jenkins, Timothy Gerald.

Age-associated alterations to sperm DNA methylation and possible consequences on the offspring. - 82 p.

Source: Dissertation Abstracts International, Volume: 75-04(E), Section: B.

Thesis (Ph.D.)--The University of Utah, 2013.

The effects of advanced paternal age have received little attention in the past. However, recent data from multiple groups suggesting an association between advanced paternal age and various disorders in the offspring have sparked a great deal of interest. Specifically, offspring of older fathers have an increased risk of autism, bipolar disorder, and schizophrenia among other issues. Further fueling this interest is the striking trend of delayed parenthood in developed countries, likely a result of socioeconomic pressures and increasing divorce rates with subsequent remarriage. Increased interest in the "paternal age effect" has driven some private tissue banks to promote cryopreservation of sperm at a young age to avoid the detrimental impacts of aging. Taken together, there is a great need for further investigation into this phenomenon.

ISBN: 9781303653773Subjects--Topical Terms:

1017816
Biology, Physiology.

Age-associated alterations to sperm DNA methylation and possible consequences on the offspring.
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245 1 0 $a Age-associated alterations to sperm DNA methylation and possible consequences on the offspring.
300 $a 82 p.
500 $a Source: Dissertation Abstracts International, Volume: 75-04(E), Section: B.
500 $a Adviser: Douglas Carrell.
502 $a Thesis (Ph.D.)--The University of Utah, 2013.
520 $a The effects of advanced paternal age have received little attention in the past. However, recent data from multiple groups suggesting an association between advanced paternal age and various disorders in the offspring have sparked a great deal of interest. Specifically, offspring of older fathers have an increased risk of autism, bipolar disorder, and schizophrenia among other issues. Further fueling this interest is the striking trend of delayed parenthood in developed countries, likely a result of socioeconomic pressures and increasing divorce rates with subsequent remarriage. Increased interest in the "paternal age effect" has driven some private tissue banks to promote cryopreservation of sperm at a young age to avoid the detrimental impacts of aging. Taken together, there is a great need for further investigation into this phenomenon.
520 $a Although there is solid epidemiological evidence to substantiate the impacts of advanced paternal age on the offspring, the etiological mechanisms that drive this process remain poorly defined. Among the most plausible contributing factors to the increased incidence of various diseases in the offspring of older fathers are age-associated alterations to the sperm epigenome. Specifically, sperm DNA methylation perturbations may have the capacity to affect offspring phenotype through transcription inhibition/activation but have yet to be explored in the context of advancing age.
520 $a To investigate age-associated sperm DNA methylation alterations, we have analyzed sperm from 17 donors who collected samples between 9 and 19 years apart. DNA methylation was analyzed in all samples at both the global and cytosine phosphate guanine (CpG) level. The results indicate that global sperm DNA methylation increases with age while regional alterations are strongly biased toward hypomethylation, a finding in stark contrast to somatic cell age-associated methylation alterations. Intriguingly, many of the genes affected by regional methylation alteration have been previously suggested to be associated with many types of neuropsychiatric disorders, including schizophrenia, bipolar disorder, developmental delay, personality disorders, and autism.
520 $a These data provide the first direct evidence that age-associated epigenetic alterations to the sperm represent a plausible mechanism for the increased incidence of various abnormalities in offspring of older fathers.
590 $a School code: 0240.
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