Navigation Links
Sons of cocaine-using fathers may resist addiction to drug, Penn Medicine study suggests

SAN DIEGO A father's cocaine use may make his sons less sensitive to the drug and thereby more likely to resist addictive behaviors, suggests new findings from an animal study presented by Penn Medicine researchers at Neuroscience 2013, the annual meeting of the Society for Neuroscience.

The study, led by Mathieu Wimmer, PhD, a post-doctoral researcher in the laboratory of R. Christopher Pierce, PhD, associate professor of Neuroscience in Psychiatry at the Perelman School of Medicine at the University of Pennsylvania, found that sons, but not females, of male rats on cocaine were not only less likely to want the drug, but also resistant to effects of it. This suggests cocaine causes epigenetic changesthat is alterations to DNA that do not involve changing the sequencein sperm in which reprogrammed information is transmitted down to the next generation of men.

Last year, Dr. Pierce and colleagues found that cocaine abuse in a male rat rendered the next generation of animals resistant to the rewarding properties of the drugthose offspring were less likely to take cocaine. They found changes in the brain-derived neurotrophic factor (BDNF), which is a molecule known to be important for the rewarding efficacy of cocaine, but only by looking at molecular signaling pathways in progeny that had never experienced cocaine.

In the current study, the authors focused on the physiology of neurons before and after taking cocaine in the offspring of cocaine-experienced fathers, and found that they were less sensitive to the drug and less likely to succumb to addictive behaviors.

In short, not only are rat offspring of cocaine-abusing fathers less likely to take the drug on their own volition, they are less likely to become addicted to it if they are administered it.

In male rats whose fathers used cocaine, the neurons in the nucleus accumbens were less sensitive to cocaine. That is, repeated cocaine use in the sons of cocaine-experienced fathers did not cause remodeling of excitatory AMPA receptors, which is thought to be critical for the development of addiction and cocaine craving.

"This adds to the growing body of evidence that cocaine abuse in a father rat can affect how his sons may respond to the drugand point to potential mechanisms that contribute to this phenomenon," said Wimmer. "Further research is needed to better understand how these behavior changes are passed down from one animal generation to the next, and eventually if the same holds true for humans."


Contact: Steve Graff
University of Pennsylvania School of Medicine

Related biology news :

1. First paternity study of southern right whales finds local fathers most successful
2. The old primates club: Even male monkeys ride their fathers coattails to success
3. Researchers attempt to solve problems of antibiotic resistance and bee deaths in one
4. BRG1 mutations confer resistance to hormones in lung cancer
5. Genetic variation in East Asians found to explain resistance to cancer drugs
6. Team discovers how bacteria resist a Trojan horse antibiotic
7. New paper examines poison resistance in snakes around the world
8. Hot on the trail of metabolic diseases and resistance to antibiotics
9. Notre Dame researchers using novel method to combat malaria drug resistance
10. MicroRNA controls malignancy and resistance of breast cancer cells
11. Scientists discover new type of cell with a key role in treatment-resistant asthma
Post Your Comments:
(Date:11/4/2015)... York , November 4, 2015 ... a new market report published by Transparency Market Research "Home ... Growth, Trends and Forecast 2015 - 2022", the global home ... US$ 30.3 bn by 2022. The market is estimated ... forecast period from 2015 to 2022. Rising security needs ...
(Date:10/29/2015)... RESTON, Va. , Oct. 29, 2015 ... announced today that it has released a new version ... Daon customers in North America ... gains. IdentityX v4.0 also includes a FIDO UAF ... customers are already preparing to activate FIDO features. These ...
(Date:10/29/2015)... , Oct. 29, 2015 Today, ... a partnership with 2XU, a global leader in ... a smart hat with advanced bio-sensing technology. The ... athletes to monitor key biometrics to improve overall ... partnership, the two companies will bring together the most ...
Breaking Biology News(10 mins):
(Date:11/30/2015)... 30, 2015 /PRNewswire/ - Zenith Epigenetics Corp. ("Zenith" or the ... C.W. Wong to its Board of Directors to replace ... with a wealth of experience as co-founder of Resverlogix, with ... --> --> Dr. Wong remarked, ... of directors. Zenith,s long standing expertise in epigenetics and the ...
(Date:11/30/2015)... -- TapImmune, Inc. (TPIV), a clinical-stage ... and gene-based immunotherapeutics and vaccines for the treatment of ... presenting at the 8 th Annual LD Micro ... PT. Dr. John N. Bonfiglio a TapImmune ... presentation and will join TapImmune management in meeting with ...
(Date:11/30/2015)... 2015  Northwest Biotherapeutics (NASDAQ: NWBO ) ("NW ... therapies for solid tumor cancers, announced today that the ... and the Company welcomes Neil Woodford,s call ... anonymous internet report on NW Bio.  The Company,s Board ... Powers stated, "We agree with Mr. Woodford that, ...
(Date:11/27/2015)... , ... November 27, 2015 , ... ... that includes over 2,000 technical presentations offered in symposia, oral sessions, workshops, ... applied spectroscopy, covers a wide range of applications such as, but not limited ...
Breaking Biology Technology: