View source for Parahuman

[[Image:The Young Family.jpg|thumb|250px|right|Australian artist [[Patricia Piccinini]]'s concept of what human-animal hybrids might look like are provocative creatures which are part of a sculpture entitled ''The Young Family''.]]

A '''parahuman''' or '''para-human''' is a [[human]]-[[animal]] [[Hybrid (biology)|hybrid]]. Scientists have done extensive research into the combination of [[gene]]s from different species, e.g. adding human (and other animal) genes to [[bacteria]] and farm animals to mass-produce [[insulin]] and [[spider silk]] [[protein]]s. Note that individual genes can be transplanted between species without the transplantation of whole [[cell (biology)|cell]]s.

==Human-animal hybrids==
Parahumans are also referred to as "human-animal hybrids". The term ''parahuman'' is not used in scientific publications. The term is sometimes used to sensationalize research that involves mixing biological materials from humans and other species. It was used in a ''National Geographic'' article to describe an experiment in 2003, during which Chinese scientists at the Shanghai Second Medical University successfully fused human cells with rabbit eggs.<ref name="natgeo">{{cite web| url=http://news.nationalgeographic.com/news/2005/01/0125_050125_chimeras.html| title=Animal-Human Hybrids Spark Controversy| first=Maryann| last=Mott| publisher=National Geographic News| month=January 25| year=2005| accessdate=2006-03-22}}</ref>

==Rationale==
There are several possible reasons that parahumans or chimeras might be created. The current forms of [[chimera (genetics)|chimera]] exist for medical and industrial purposes, e.g., production of drugs and of organs suitable for [[organ transplantation]]. Other experiments aim to reveal knowledge about the function of the human body, e.g., by creating mice with a human-like [[immune system]] to study [[AIDS]] or with a brain incorporating human [[nerve cells]]. Restrictions on [[cloning]] and [[stem cell]] research makes chimera research a more attractive alternative in some researchers' eyes.

If parahumans are created using [[germline engineering]], they breed true, and are different enough from ordinary humans to be unable to breed with them, this would qualify them as being a distinct [[species]]. Parahumans created using only [[somatic]] genetic engineering would have "normal" children. Another key difference is that a germ-line parahuman would most likely be modified before birth, while a somatic parahuman could be an adult human who chooses to be modified. The latter is sometimes seen as more ethical because the changes are made with [[informed consent]]; a counterargument is that no harm is done to a person born with modified genes because the person had no control over their genetics in the first place.

==Human-animal hybrids for scientific research==

Scientists in Britain have been granted permission to create human-animal hybrid embryos by injecting human DNA into cows' eggs for stem cell research.<ref>[http://web.archive.org/web/20071103051707/http://www.cbc.ca/health/story/2007/09/05/hybrid-embryos.html?ref=rss British regulators say yes to human-animal (hybrid) embryo research - CBC News, Canada, September 5, 2007]</ref><ref>[http://www.cbc.ca/news/story/2006/11/07/hybrid-embryos.html British scientists plan to create human-cow embryos - CBC News, Canada, November 8, 2006]</ref><ref>[http://news.bbc.co.uk/1/hi/health/6661717.stm Ministers bow to hybrid pressure - Ministers have bowed to pressure to allow the creation of human-animal hybrid embryos for research. – BBC News, 17 May 2007, UK]</ref><ref name="natgeo"/> Researchers from Newcastle University and King's College London submitted the application to the Human Fertilization and Embryology Authority (HFEA), an independent regulatory body that oversees embryo research and fertility treatment in Britain. The scientists said the hybrid human-bovine embryos could prove useful in pursuing treatments to prevent Parkinson's disease and Alzheimer's, as well as spinal cord injuries, diabetes and arthritis. Instead of using human eggs, the researchers will remove the nuclei from cows' eggs and replace them with cells from the patients to create cloned stem cell lines that contain the same genetic mutation that results in these neurological disorders.

"We feel that the development of disease-specific human embryonic stem cell lines from individuals suffering from genetic forms of neurodegenerative disorders will stimulate both basic research and the development of new treatments for devastating brain diseases," Dr. Stephen Minger, of the stem cell biology laboratory at King's College London, said in a release.

Minger cited the short supply of human eggs left over from in vitro fertilization, which have been used for stem cell research but have to be acquired through surgery on the women. "The hybrid embryo would be 99.9 percent human. The only bovine element would be found in DNA outside the nucleus of the cell."

The proposal has appalled critics of stem cell research, who criticize the idea of creating so-called "chimera" (see: [[Chimera (genetics)]]) embryos as an unethical and potentially dangerous practice.

==Ethics==
There is no scientific field of parahuman research. Ethical, moral, and legal issues of parahuman research are speculative extensions of existing issues that arise in [[Chimera (genetics)#Chimeras in research|actual research]]. Some individuals see the creation of chimeras to devalue the uniqueness of human life or to be tampering with a divine plan.

In contrast, some [[transhumanists]] see this technology as one of many ways to overcome fundamental human limitations, such as disease and aging, and point out the many potential commercial and medical benefits.<ref>{{cite web| url=http://www.transhumanism.org/index.php/WTA/more/636/| title=Position on Human Germline Genetic Modification| month=December 24| year=2005| accessdate=2006-12-14}}</ref> The debate can also be seen in terms of individual freedom to use [[germinal choice technology]] or [[reprogenetics]].

Other ethical issues (shared with [[genetic engineering]] in general) involve the legal and moral status of a hybrid individual or race, whether the decision-making power over its creation should lie with governments or individuals, whether a distinction should be drawn between strictly medical treatments (restoring lost function) and those enhancing humans above some "normal" standard, whether [[medical ethics]] allow doctors to offer parahuman-related treatments, and whether [[xenotransplantation]] poses risks of cross-species disease transfer.

The developmental biologist [[Stuart Newman]] applied for a patent on a human-nonhuman chimera in 1997 as a challenge to the [[U.S. Patent and Trademark Office]] and the [[U.S. Congress]] on the patentability of organisms.<ref>{{cite web| url=http://www.washingtonpost.com/wp-dyn/articles/A19781-2005Feb12.html| title=U.S. Denies Patent for a Too-Human Hybrid| month=February 13| year=2005| accessdate=2008-04-02}}</ref>

==Parahumans in fiction==
[[Science fiction]] authors sometimes use the term ''parahuman'' to refer to distinct "races" of human-like creatures created through [[genetic engineering]]. A parahuman created starting from a nonhuman-animal template could be considered a [[biological uplift]], as in the works of [[David Brin]], while a parahuman based more closely on the human form and genome might also be called [[posthuman]] or [[transhuman]]. The [[role-playing game]] [[Transhuman Space]] and the related book "[[GURPS]] Bio-Tech" use the term ''parahuman'' interchangeably with ''variant human'' to refer to a wide array of heavily modified racial templates. These range from a "Gilgamesh-Series" resembling normal humans but with increased lifespan; a "Lepus-Series" resembling [[anthropomorphic]] rabbits; to a "Tek Rat" described as a mix of human, raccoon, and possum. The television series ''[[Dark Angel (TV series)|Dark Angel]]'' featured a group of parahumans (referred to in the series as "[[transgenic]]s") with animal DNA selected to enhance their abilities to serve as [[supersoldier]]s.  In [[Chapterhouse: Dune]], by [[Frank Herbert]], there is a species called [[Futar]]; they are a genetically egineered human/feline hybrid trained to kill the [[Honored Matres]].

Parahumans are a useful concept for the science fiction writer, because they offer ways to explore issues such as racism, alienation, religion, and freedom and to justify colonization of exotic environments such as the ocean or planets with non-Earthlike properties.

One famous work involving parahumans (though not referred to as such) is ''[[The Island of Doctor Moreau]]'' by [[H.G. Wells]]. During the Golden Age of Science Fiction, [[Cordwainer Smith]]'s parahuman underpeople (humans derived from animal stock) were an important part of his ''Instrumentality'' stories.  More recently, [[Caitlín R. Kiernan]], who has described herself as a parahumanist,{{Fact|date=March 2008}} has explored the subject of parahumans in a number of science fiction stories, including ''[[The Dry Salvages (novella)|The Dry Salvages]]'', "Riding the White Bull", and "Faces in Revolving Souls". [[John Crowley]], in his novel ''[[Beasts (John Crowley)|Beasts]]'', centered his plot around lion-human hybrids, with a lone fox-human hybrid acting as a kingmaker.

Humor authors such as [[Lewis Carroll]] in [[English language|English]] and [[Sukumar Ray]] in [[Bangla]] have had parahuman characters in their writings. More recently, ''[[Teenage Mutant Ninja Turtles]]'', ''[[Maximum Ride]]'' and ''[[Full Metal Alchemist]]'' are themed around human-animal hybrids.

==See also==
*[[Anthropomorphism]]
*[[Chimera (genetics)]]
*[[Genetic pollution]]
*[[High Evolutionary]]
*[[Speciesism]]
*[[Therianthropy]]
*[[Transhuman]]
*[[Transhumanism]]
*[[Uplift Universe]]

==References==
<references/>

==External links==
*[http://www.reason.com/rb/rb112404.shtml Reason: What Is Too Human?]
*[http://www.the-aps.org/publications/tphys/2003html/Oct03/randall.htm Linda MacDonald Glenn: When Pigs Fly?]
*[http://news.nationalgeographic.com/news/2005/01/0125_050125_chimeras.html Animal-Human Hybrids Spark Controversy] from [http://news.nationalgeographic.com/ National Geographic News]
*[http://www.nochimera.com/chimera_ethics.html Chimera Ethics]
*[http://www.australasianbioethics.org/Newsletters/144-2004-11-30.html Scientists grappling with chimera ethics]
* [http://www.cambridgenetwork.co.uk/views/biolines What is a human admix embryo?]

[[Category:Human evolution]]
[[Category:Mammal hybrids]]
[[Category:Transhumanism]]

[[it:paraumano]]
[[scn:paraumana]]