Showing posts with label stem cell research. Show all posts
Showing posts with label stem cell research. Show all posts

Friday, September 25, 2015

Kidneys, Experiments, and Ethics

Kidney failure isn't always fatal these days. Hemodialysis or peritoneal dialysis can keep someone alive until a transplant donor shows up. Even so, kidney problems kill about a million folks each year.

It's not the leading cause of death for my 7,250,000,000-plus neighbors, but that's still a lot of deaths.

Scientists in Japan grew working kidneys in rats and pigs. We're years away from grow-your-own kidneys for patients: but I think that's coming.

Meanwhile, a scientist in England wants permission to collect people for genetic experiments. The Francis Crick Institute, Human Fertilization and Embryology Authority, and BBC News describe the proposal more discretely.
  1. Kidneys and Stem Cells
  2. Human Experimental Subjects: Disposable People

Doing the Right Thing: Eventually


America has changed since this was written:
"...'...We blowed out a cylinder-head.'

" 'Good gracious! anybody hurt?'

" 'No'm. Killed a [redacted].'

" 'Well, it's lucky; because sometimes people do get hurt....'..."
("The Adventures of Huckleberry Finn," Part 2 (1885), Chapter XXXII, Mark Twain; via gutenberg.org)
"Huckleberry Finn" is fiction, but I'm pretty sure that Mark Twain knew folks who shared Aunt Sally's belief that some folks weren't "people."

Aunt Sally was a nice enough person, with no more than the usual human failings. But she lived in a society which treated some people as if they were property.

Several decades later, Harper's Weekly explained differences between the presumably-superior "Anglo-Teutonic" race and many of my ancestors.

Many Americans eventually accepted the Irish and other folks "of low type." We've even had an Irish president.

These days some 'regular Americans' see folks from the Middle East threats to our country. I'm pretty sure we'll get over that, too. (September 18, 2015; July 6, 2014)
"Americans will always do the right thing — after exhausting all the alternatives."
Winston Churchill, 1980 or earlier

"Men and nations behave wisely when they have exhausted all other resources."
Abba Eban, March 1967

"You can depend on Americans to do the right thing when they have exhausted every other possibility."
Some Irishman
(Wikiquote)

Remembering Tuskegee


The Hippocratic Oath has been rewritten — and ignored — quite a few times.

But the basic idea, that doctors should behave ethically, won't go away.

The World Medical Association put the Declaration of Geneva together in 1948, after embarrassments like Josef Mengele and Sigmund Rascher.

A few decades later, Irwin Schatz, Peter Buxtun, and other troublemakers finally ended the Tuskegee syphilis experiment.

Hepatitis studies at Willowbrook State School were also shut down around that time. Too many folks got squeamish over using mentally disabled children as lab animals.

Acknowledgement of Unit 731's alternatively-ethical human experiments is starting to trickle through official channels: after more than a half-century. I suppose 'better late than never' applies here.

There's still lively debate over whether anyone should use data from those experiments. Some of the arguments 'against' are ethical. Others point out that sloppy methodology makes the data useless. It's a thorny issue that I'll leave for another post.

Today I'll focus on why I think curiosity isn't a good reason for subjecting folks to occasionally-lethal experiments.

Love, Science, and Being Human


I've been over this before. Human beings are people; all of us, no matter who our ancestors are, where we live, what we look like, or how old we are. (Catechism of the Catholic Church, 357, 361, 369-370, 1700, 1730, 1929, 2273-2274, 2276-2279)

We're not all alike, and we're not supposed to be. But we have equal dignity. (Catechism, 33, 366, 1934-1938, 2232, 2393)

People are not property. (Catechism, 2373-2379, 2414)

I must respect local, regional, and national, authorities; and be a responsible, active, citizen. (Catechism, 1897-1904, 1913-1917)

That does not mean blindly following orders. (Catechism, 1905-1912, 2242)

Loving God, loving my neighbors, seeing everyone as my neighbor, and treating others as I'd like to be treated, is a high priority. (Matthew 5:43-44, 7:12, 22:36-40, Mark 12:28-31; Luke 6:31 10:25-27, 29-37; Catechism of the Catholic Church, 1789)

Learning how the universe works and using that knowledge to make new tools, is part of being human. It's what we're supposed to do. Science and technology are fine. Ignoring ethics isn't. (Catechism, 159, 2292-2296, 2375-2377, 2414)

I'm expected to love all neighbors, no exceptions: and follow the 'friends don't let friends drive drunk' principle. (September 6, 2015; March 15, 2015)


1. Kidneys and Stem Cells



(From Science Photo Library, via BBC News, used w/o permission.)
"Lab-grown kidneys work in animals"
Michelle Roberts, BBC News (September 22, 2015)

"Scientists say they are a step closer to growing fully functioning replacement kidneys, after promising results in animals.

"When transplanted into pigs and rats, the kidneys worked, passing urine just like natural ones.

"Getting the urine out has been a problem for earlier prototypes, causing them to balloon under the pressure.

"The Japanese team got round this by growing extra plumbing for the kidney to stop the backlog, PNAS reports.

"Although still years off human trials, the research helps guide the way towards the end goal of making organs for people, say experts...."
The Jikei University School of Medicine's Dr. Takashi Yokoo and others tested their technique on rats, then pigs — successfully. Rats and pigs aren't human, so as Michelle Roberts said: we're years from growing human kidneys.

But we already have folks "walking around with body parts which have been designed and built by doctors out of a patient's own cells." (BBC News (2012))

Kidneys are much more complex than the bladders mentioned in that 2012 article. But I'm pretty sure we'll add 'artificial' kidneys to the growing list of available replacement parts. I'm also pretty sure that we'll have ethical questions about the new tech. (February 13, 2015; August 29, 2014)

Stem Cells, Organ Transplants, and Ethics


I don't see problems with the Jikei University School research, but my guess is that some folks might.

They used stem cells and cloned pig fetuses in their research. Stem cells are undifferentiated cells. They'll become muscle tissue, nerves, or whatever, depending on which bit of genetic code gets used.

My bone marrow, adipose tissue, and blood, contains stem cells. Umbilical cord blood is another source for stem cells. Extracting stem cells from my tissues would probably hurt a bit, but wouldn't disable or kill me.

Using my stem cells for stem cell transplantation would be okay, just as organ transplants are ethically justified — usually. Killing someone and breaking the body down for parts wouldn't be. Not even if I didn't know the victim, and someone I liked needed the spare parts. (Catechism, 2296)

If this research leads to 'grow your own' kidneys for humans, someone will be the first patient: a human test subject.

Experimentation on humans is okay unless it involves "disproportionate or avoidable risks," or experiments are done without informed consent. (Catechism, 2295)

The rules aren't as strict for animals — but we can't 'do anything we like' to critters. We shouldn't anyway. (Catechism, 2416-2418)

More:

2. Human Experimental Subjects: Disposable People


Medical research is a good idea. But ethics still apply. (March 6, 2015; February 13, 2015)
"UK scientists seek permission to edit the genes of human embryos"
Kate Kelland, Reuters (September 18, 2015)

"British scientists have applied for permission to edit the genes of human embryos in a series of experiments aimed at finding out more about the earliest stages of human development.

"Just months after Chinese scientists caused an international furor by saying they had genetically modified human embryos, Kathy Niakan, a stem cell scientist from London's Francis Crick Institute, has asked the British government's fertility regulator for a license to carry out similar experiments.

"In a statement about her application, which was made to the Human Fertilization and Embryology Authority (HFEA), Niakan said she had no intention of genetically altering embryos for use in human reproduction, but aimed to deepen scientific understanding of how a healthy human embryo develops.

" 'This knowledge may improve embryo development after in vitro fertilization (IVF) and might provide better clinical treatments for infertility,' she said in a statement, adding that any donated embryos would be used for research purposes only...."
Wanting to "deepen scientific understanding of how a healthy human embryo develops" is, I think, a good idea.

Growing or collecting people to be used "for research purposes only," on the other hand, is not a good idea. At all.

As I said earlier, I think human beings are people: all human beings. Even those who don't have my legal or social status.1

I'll admit to a bias, since a doctor used me for a scientific study without my parents' knowledge. The experiment was non-lethal, obviously, but probably contributed to several decades of somewhat-avoidable pain. (February 3, 2009)

The Crick Institute is following British law and customs, getting official permission to experiment on people. But 'legal' isn't necessarily 'right.'

Cultural Values, Rules, and Principles


There is no one 'correct' culture. We're not all alike. That's how it's supposed to be.

But cultural values which do not honor human dignity, freedom, and justice, are wrong — no matter how cherished those values are. (Catechism, 814, 1740, 1882-1883, 1901, 1915, 1928-1948, 1950-1960, 1957, 2524)

I've talked about positive law, rules we make up and change as our circumstances change; and natural law, unchanging principles, before. (August 31, 2014; August 29, 2014)

"For Research Purposes Only"



(From SPL/Science Photo Library, via BBC News, used w/o permission.)
"Scientists seek permission to genetically modify embryos"
BBC News (September 18, 2015)

"UK scientists are seeking permission to genetically modify human embryos for the first time.

"Researchers at The Francis Crick Institute in London want to use a controversial genetic technique to carry out research into infertility.

"The embryos would be destroyed after the research and not implanted into the womb....

"...Research leader, Dr Kathy Niakan, said the aim was to understand the genes that human embryos need to develop successfully.

" 'Importantly, in line with HFEA regulations, any donated embryos would be used for research purposes only,' she said.

" 'These embryos would be donated by informed consent and surplus to IVF treatment.'...

"...'UK scientists are poised to make a world-leading contribution to this exciting field,' she said.

" 'At the same time, we should be reassured to know that this work is being carried out under a robust regulatory scheme that ensures high scientific and ethical standards."
I suppose it's nice that folks at the Francis Crick Institute are going through proper channels, getting government approval before asking parents to donate their kids for these experiments.

But I do not think that a parent, informed or not, should hand a child over to killed. Not even if scientists might discover something useful — and boost England's international reputation a leader in human experimentation.

I understand that some residents of the UK don't like the Crick proposal. I think the British government will probably approve, anyway.

Genetics is an exciting study today, national pride is at stake, and we're not supposed to think of embryos as people. Not 'real' people.

Delaying recognition of a person's humanity until a fixed age is convenient, of course. But convenience does not justify classifying some folks as non-persons. (February 13, 2015)

Faith, Reason, and Ethics


It's not faith or reason: it's faith and reason. ("Fides et Ratio," John Paul II (September 14, 1998); Catechism, 35)

Thinking is not a sin. Neither is curiosity. (Catechism, 159, 283, 1778)

Learning how our genes work is okay. Killing people in the process is not: even if the victims are not, legally, people.

As a Catholic, I must believe that human life is sacred: all human life, including folks who are very young. (Catechism, 2258, 2270, 2273, 2276-2279)

Life and health are "precious gifts." Healing the sick is a good idea. But killing one person to get parts for another is wrong. So are experiments that cause someone's death. (Catechism, 2258, 2288-2296)

More, mostly about science, tech, and thinking:

1 Slavery finally became illegal in America and quite a few other nations, but human trafficking is still a problem. (January 18, 2015; August 31, 2014)

No matter what you call it, slavery is a bad idea, and we shouldn't do it. (Catechism, 2414)

More:

Friday, August 29, 2014

Regeneration: Getting Closer to Growing Lost Organs

Too many folks die, waiting for a compatible donor organ. We can't coax a patient's body into growing a new heart or kidney: yet.

But we can build made-to-order bladders, and scientists have grown a new thymus: inside a mouse. It's a first step.
  1. Growing a Thymus from Scratch
  2. First Steps: Growing Liver Buds
  3. Replacement Parts, Grown to Order: Bladders Today; Hands — Eventually, Maybe
This post has a sort of epilogue about what changes, what doesn't, and why I like living in 'the future.'

Starfish Do It - - -



(From Natural History Museum in London, via Wikimedia Commons, used w/o permission.)
(" 'Comet' of Linckia guildingi, showing starfish body regrowing from a single arm"
(Wikipedia))

Some starfish eat clams. So do humans. Folks whose livelihood depended on the clam harvest sometimes got frustrated when starfish got at the clams before they did: and killed the echinoderms by cutting them to pieces. and tossing the pieces back into the ocean.

I don't think they were being vindictive. Starfish earned a reputation for being tough critters.

We don't do that as much these days: partly because folks noticed that starfish grow new limbs: and sometimes severed limbs grow new starfish.

- - - Skinks Do It - - -


Some geckos, skinks, lizards, salamanders and tuatara, can 'shed' a tail or limb: escaping while a predator catches the severed part. Scientists call this startling ability autotomy. At least two species of African spiny mice have breakaway skin. (Apathetic Lemming of the North (June 13, 2013)

Those amphibians and reptiles regrow their limbs. Remarkably, the mice grow new skin: complete with hair follicles, sweat glands, and little to no scarring.

Humans occasionally regrow lost fingertips and toes, and can sometimes regrow injured parts of our liver. But the new toes and fingers look odd, without fingerprints and with squarish nails: or no nails at all.

More:

- - - Why Can't We?


If starfish and some mice can regenerate complete missing parts: why can't we?

Right now, we don't know. Not for sure. It probably has something to do with our immune system, and the way our bodies deal with injury.

At least some amphibians have a lot fewer lymphocytes (white blood cells) while they're regrowing missing parts, and don't grow connective tissue over wounds the way we do.

The good news is that we've got really effective immune systems. Even plagues like the Black Death didn't manage to kill off more than about half the population in Europe.

We still have influenza epidemics, and there's an ongoing Ebola outbreak in West Africa: but we've learned a lot since the 1300s, and are learning more. (June 13, 2014; February 12, 2014; January 13, 2013)

Regenerating severed limbs is still a long way off, but like I said: we're learning.


1. Growing a Thymus from Scratch



(From SPL/Science Photo Library, via BBC News; used w/o permission.)
("The thymus produces T-cells, a part of the immune system"
(BBC News))
"Whole organ 'grown' in world first"
James Gallagher, BBC News (August 24, 2014)

"A whole functional organ has been grown from scratch inside an animal for the first time, say researchers in Scotland.

"A group of cells developed into a thymus - a critical part of the immune system - when transplanted into mice.

"The findings, published in Nature Cell Biology, could pave the way to alternatives to organ transplantation.

"Experts said the research was promising, but still years away from human therapies.

"The thymus is found near the heart and produces a component of the immune system, called T-cells, which fight infection...."
Until we're able to regenerate lost or damaged organs, some of us will need transplants.

That's why I'm excited about this research. It looks like someone needing a new organ may be able to grow one. We're already able to grow replacements for the body's simpler parts:
"...There are already patients with lab-grown blood vessels, windpipes and bladders. These have been made by 'seeding' a patient's cells into a scaffold which is then implanted."
(James Gallagher, BBC News)
The technique used to grow the mouse thymus involves cells from embryos. Doing the same for humans presents problems: some technical, one ethical.

Technical Issues


Since its DNA is from another critter, the little mousy thymus isn't compatible with the host mouse. On top of that, researchers aren't quite certain that the new thymus will stop growing when it should.

For humans, a replacement thymus grown with this technique would be subject to transpalant rejection. Our immune systems are pretty good at killing off anything inside us that's not on the body's 'approved' list: including many transplanted organs.

That's why doctors are so fussy about getting a good match for transplants, and why my replacement parts are biologically inert.

Ethics


The big problem with this technique is where researchers would get cells for the new thymus. Killing a very young human to help an older one is not right. We can't "...do evil that good may come of it...." (Romans 3:8)

Actually, we can. We've got free will. But we shouldn't.

Since I'm a Catholic, I have no problem with organ transplants: provided that someone isn't disabled or killed in the process. Health is a "precious gift." We're expected to take care of our health: within reason. (Catechism of the Catholic Church, 2288-2296)

Bottom line, doing something bad so that something good will happen isn't right. (Catechism, 1756)

I'm not upset that one mouse had to be killed to give another mouse a new thymus. I like animals, recognize that humans are animals, but know that we're not just animals; and that's another topic. Topics. (July 27, 2012; August 31, 2011)


2. First Steps: Growing Liver Buds

"Tiny stem-cell livers grown in laboratory"
James Gallagher, BBC News (July 3, 2013)

"Tiny functioning human livers have been grown from stem cells in the laboratory by scientists in Japan.

"They said they were 'gobsmacked' when liver buds, the earliest stage of the organ's development, formed spontaneously.

"The team, reporting their findings in Nature, hope that transplanting thousands of liver buds could reverse liver failure.

"Experts welcomed the findings, describing them as 'exciting'.

"Scientists around the world are trying to grow organs in the lab to overcome a shortage of organ donors.

"Some patients already have bladders made from their own cells, but dense solid organs such as the liver and kidneys are much harder to produce...."
The little liver buds hooked themselves into the circulatory system of the host mice and started acting like miniature livers. This is good news for folks who might need a new liver: decades from now.

There's a lot more research to be done before this is ready for humans, though. Again, one of the problems is that the scientists aren't sure that the liver buds would stop growing when they're supposed to.

There may be other technical issues, including the possibility that medications used in this procedure are toxic for humans. We've got quite a bit in common with mice: but we're not mice.

I trust that the human stem cells they used came from someone who survived the extraction.

We're expected to learn more about how things work. Using science and developing new technology are part of being human. Ethics apply, of course, just like anything else we do. (Catechism, 2292-2295)

Using stem cells isn't wrong. Killing someone to get their stem cells, kidneys, or anything else: that's what's wrong.


3. Replacement Parts, Grown to Order: Bladders Today; Hands — Eventually, Maybe



(From BBC News, used w/o permission.)
((left) "Is the idea of growing hands a myth or a far-off reality?" (right) "A bladder scaffold is used to hold together the new structure"
(BBC News))
"Will we ever grow replacement hands?"
James Gallagher, BBC News (March 20, 2012)

"It might seem unbelievable, but researchers can grow organs in the laboratory. There are patients walking around with body parts which have been designed and built by doctors out of a patient's own cells.

"Over the past few weeks on the BBC News website we have looked at the potential for bionic body parts and artificial organs to repair the human body. Now we take a look at 'growing-your-own'.

"There is a pressing need. A shortage of available organs means many die on waiting lists and those that get an organ must spend a lifetime on immunosuppressant drugs to avoid rejection.

"The idea is that using a patient's own stem cells to grow new body parts avoids the whole issue of rejection as well as waiting for a donor.

"Dr Anthony Atala, director of the Institute for Regenerative Medicine at the Wake Forest Baptist Medical Center in North Carolina, US, has made breakthroughs in building bladders and urethras...."
Besides sidestepping dangers of tissue rejection, "using a patient's own stem cells" means that the donor is also the patient: avoiding some ethical complications.

I'm an adult, in moderately good health — diabetes and a few neurological glitches aside — so I've got stem cells in my bone marrow, intestines, and a few other places. I can afford to lose a fraction of that supply: just as I get along fine after medicos take another blood sample.

I suppose someone might have religious objections to now-routine medical procedures like taking blood samples or biopsies: but I don't. Not if it's part of health maintenance or therapy, and doesn't expose someone to unreasonable risk.

More:

Four Levels of Complexity

"...He breaks tissue-building into four levels of complexity.
  • "Flat structures, such as the skin, are the simplest to engineer as they are generally made up of just the one type of cell.
  • Tubes, such as blood vessels and urethras, which have two types of cells and act as a conduit.
  • Hollow non-tubular organs like the bladder and the stomach, which have more complex structures and functions.
  • Solid organs, such as the kidney, heart and liver, are the most complex to engineer. They are exponentially more complex, have many different cell types, and more challenges in the blood supply.
" 'We've been able to implant the first three in humans. We don't have any examples yet of solid organs in humans because its much more complex,' Dr Atala told the BBC...."
(James Gallagher, BBC News)
James Gallagher's article outlines Dr. Atala's technnique for growing bladders, one of the third-most-complex items from that list.

They start with a tissue sample from the bladder being repaired. The sample is about half the size of a U.K. postage stamp. A supply of cells is grown from that sample. The process takes about a month. Meanwhile, a scaffold or mold shaped like the bladder gets built.

Once they've got enough cells on hand, they coat the scaffold: one layer of cells at a time. The coated scaffold goes into what Mr. Gallagher called an oven for two weeks. Since the "oven" mimics conditions inside the human body, I'd think "aquarium" might be slightly more accurate.

Either way, after two weeks the bladder is ready to be implanted into the patient: scaffold and all. The patient's body eventually absorbs the scaffold, leaving a working bladder.

Bladders and Growing a Rat Heart


A bladder looks and acts like a balloon: sort of. What make growing a bladder tricky is getting the little spirals, lines, and circles of muscle fibers working properly; and connecting them to blood vessels and the parasymathetic nervous system.

The parasympathetic nervous system is part of the autonomic nervous system. We generally aren't aware of that part of our body's operating system, until something goes wrong: and that's another topic.

Alexis Carrel started growing a sample from a chicken embryo's heart January 17, 1929. He died November 5, 1944. The tissue lived until September 1946. So far, nobody's managed to repeat Carell's experiment.

But scientists are still learning. Dr Doris Taylor's team grew a rat's heart that kept beating for eight days. Granted, the heart worked at 2% capacity: but that it worked at all is remarkable.

More:


Brand-New Tech, Same Old Challenges


I'm pretty sure that someone will find ways to misuse regenerative medicine. We humans have a knack for getting into trouble. "But man himself begets mischief, as sparks fly upward," as Job 5:7 puts it.

We also have a knack for evading responsibility: or trying to. After our first parents broke the deal they had with God, Adam tried blaming his wife: and God. (Genesis 3:12)

That didn't end well.


("Expulsion from the Garden of Eden," Thomas Cole, via Wikimedia Commons, used w/o permission.)

New Tech, New Rules, Same Old Principles



(Commercial ad of the Dormans of Stafford engine company in The Times, via Dormans and Wikimedia Commons, used w/o permission.)
(Ad in The Times, February 24, 1919.)

Back in my 'good old days,' a half-century back, some folks claimed that science and technology made the 'outmoded morality' we'd been working with obsolete.

Others apparently believed that moral decay was caused by newfangled gadgets like the telephone and television: and, of course, that 'religion of the antichrist,' evolution.

Folks who claimed that science and technology made 'conventional morality' obsolete were right: sort of.

For example, social conventions and laws that worked when a horse was the fastest thing on the road don't necessarily apply when you add motorized vehicles to the mix.

The United Kingdom's Locomotive Acts of the 1860s and 1870s, and their equivalents in America, weren't completely daft. We still have vehicle registration, registration plates, speed limits, and maximum vehicle weights.

Eventually, legislators realized that making automobiles stay below four miles an hour in the country, two miles an hour in cities, and have a man carrying a red flag walk in front of road vehicles hauling multiple wagons was — daft.

Some things haven't changed, though, and won't. For example, theft was wrong and aiding strangers was right in Abraham's day: and now. The Decalog wouldn't show until Moses' time, but I think we see hospitality as a virtue in Genesis 18 — and that's another topic.

Positive Law, Isus Positum: Human-Made Rules


The Roman Republic's five-tier status system worked pretty well. Someone could have status civitatis, status libertatis, status familiae, or be alieni iuris. We'd think there was a sixth tier, slaves: but they weren't persons, legally.

Remember, I said the Republic's system worked "pretty well." It wasn't perfect, but the Republic lasted for five centuries before the Senate bollixed things up to the point where they needed an emperor — and that's another topic.

The Roman Republic's laws and constitution are an example of ius positum, or positive law: human-made laws that define how folks may act, and what rights they have.

The 'conventional morality' that some folks got fed up with in 'the good old days' was positive law: something that folks who were mostly Anglo-Saxon Protestant men in America had concocted. Like Roman law, it had worked pretty well. But by the 1960s, parts of that set of positive law were long overdue for overhaul.

I do not miss living in a society where "she's as smart as a man" was supposed to be a compliment, and a person had to look like me to get a decent job. I remember the 'good old days:' and they weren't.

Natural Law, Lex Naturalis: Universal Principles, Changing Applications


Folks at least as far back as Plato and Aristotle discussed what we call natural law, lex naturalis.

I'm Catholic, so I accept St. Thomas Aquinas' idea that natural law is universal, unchanging, and designed by God.

Natural law is 'programmed' into us, part of reality that we can understand through reason. It lets us recognize good and evil, truth and lies. (Catechism, 1954)

Natural law does not change: doing evil so that good will follow is never acceptable; the Golden Rule always applies; we must always respect our neighbor, and our neighbor's conscience. (Matthew 7:12; Catechism, 1789, 1958)

How natural law is applied varies a great deal. Folks in different cultures and eras face different circumstances. But the underlying principles of natural law do not change. (Catechism, 1957)

The Catechism has a bit more to say about natural law: 1954-1960, 2259-2262, 2268-2270.

When our first parents decided to break God's rule we lost the harmony we had with God and with this world. But we were still human: made in the image of God, with dominion over this world — and the responsibility that goes with that power.

Are free to choose what we do, or do not do. Then, for good or ill, we live with the consequences of our decisions: and so do all generations that follow. 1

Living in 'The Future'


A few years or decades from now, we may be debating whether it's okay for someone to grow an extra brain, or marry his/her clone. Maybe that sounds like "science fiction," but —

I'm seeing my computer monitor through clip-on lenses, a surgeon replaced my original hip joints with metal-and-synthetic replacement parts, and my brain's neurochemistry is maintained by high-strength antidepressants. Although quite a bit of me artificial, I'm not quite a cyborg.

However, some of my internal and clip-on tech didn't exist when I was born, so I'm hardly in a position to rant about the supposed evils of science and technology.

I like being able to walk and think without fighting my body. That doesn't bother me, since the replacement parts and chemical tweaking are strictly therapeutic, the contemporary equivalent of licking a wound.

Maintaining or restoring health and normal function is okay. Making fitness or appearance my top priority: not so much. (Catechism, 2288-2291)

As I've said before, God gave us brains: and expects us to use them. (February 25, 2010)

I've been living in "the future" for quite a while now: and loving it. And that's — what else? Another topic. (February 9, 2014; June 14, 2013)

Yet more of my take on the importance of not being daft:
A bit of what the Church says about ethics and medicine:

1 You guessed it. There's more about free will in the Catechism: 31, 355-361, 373-379, 386-390, 396-409, 1730-1738, 1778, 2402.

Friday, February 14, 2014

Getting a Grip About Dr. Moreau, Pigs, and Human Dignity

Mystery aphids attack Texas crops while scientists experiment with human DNA. There's an old-school sci-fi movie scenario or two there: but the issues are real.
  1. Rise of the — Aphids?
  2. Serious News, Sensationalist Prose
  3. The Pancreas of Pig 29
As I said yesterday, it might be easier to either denounce all new ideas as Satanic plots, or any criticism of new technology as superstitious ignorance. I don't think easier is always better, so I try to think about the ethics involved.

"...Things Man was Not Supposed to Know..."

The only places I've run into the phrase "tampering with things man was not supposed to know" are in complaints about 'those ignorant people over there,' and the occasional freewheeling spoof of mad-scientist tales.

Ignorance isn't really bliss, that's not what Thomas Gray meant, and that's another topic. (September 2, 2012)

I think the notion that science and technology will solve all our problems is as silly as assuming that science and technology will kill us all.

New ideas aren't necessarily good, or bad: and neither are old ones. I've been over this sort of thing before:
Most folks have probably gotten used to the idea that lightening rods won't provoke God's wrath, that powered flight doesn't flout the laws of God and nature, and that inoculation will not trigger plagues of Biblical proportions.

We still see the familiar 'it's new, therefore it's evil' reaction, though: which occasionally gets in the way of noticing that something bad really is happening. My opinion.

Olive Trees, Parapets, and All That

I don't share the fear and loathing some folks apparently feel toward taking genes from one plant or animal and inserting them in another. That's partly because I know a little about the history of agriculture, and partly because I don't see a significant difference between grafting genes and grafting branches: apart from the scale of the processes.

Romans 11:19-24 uses grafting olive trees as a metaphor, but doesn't seem to condemn the practice.

Someone's probably assumed that Deuteronomy 22:9 forbids grafting, or condemns marrying someone outside your village, or whatever. I don't: particularly since it's about seeds, and is sandwiched between a rule about parapets and another about using draft animals.

I could assume that I've violated the unchanging laws of God by not having a parapet on my roof: but I live in Minnesota, and nobody's likely to try standing between the ridge and the eaves.

1. Rise of the — Aphids?


(From AgriLife Extension, photo by Dr. Raul Villanueva, via Houston Chronicle, used w/o permission.)
"Populations of the sugarcane aphid are seen on the underside of grain sorghum leaves. They decrease yields and secrete a sticky waste called honeydew that gums up combine harvesters."
"Mysterious pest threatening billion-dollar Texas crop"
Carol Christian, Houston Chronicle (February 11, 2014 (updated February 12))

"A tiny bug that has mystified Texas farmers and agriculture researchers is threatening to eat a big hole in the state's economy.

"According to a news release from Texas A&M University, the insect of unknown origin - which measures about 1/16 inch - is poised to inflict big damage to the billion-dollar Texas grain sorghum crop.

" 'For now, we're calling this pest the sugarcane aphid,' Raul Villanueva, an entomologist with A&M's AgriLife Research and Extension Center at Weslaco, said in the release...."
Researchers first noticed this pest last year. It's either a new sort of aphid — or sugarcane aphids that switched to feeding on grain sorghum.

Either way, these aphids are eating their way through this year's crop. Some fields were completely wiped out. That's very serious, since the crop is worth $974,000,000 to Texas growers.

Grain sorghum is used as cattle feed, so folks who raise cattle are affected when aphids eat their herds' food supply. An AgriLife Extension agricultural economist said that the total economic impact in Texas will be around $2,000,000,000.

Good News, Bad News, and Aphid-Eaters

The good news is that Transform WG® is an insecticide that's proven effective against aphids.

The bad news is that farmers in Texas need permission from the U.S. Environmental Protection Agency to use Transform WG® on grain sorghum. Frustrating as the bureaucratic process is, I understand why we have these rules.

Sulfoxaflor, the active ingredient in the insecticide, plays hob with the nervous system of insects. It's less toxic to mammals, but is corrosive and can cause permanent eye damage.

Understandably, Texas researchers are looking at alternatives: like encouraging ladybugs, lacewings, sweat flies, or other aphid-eaters to set up housekeeping near grain sorghum crops. Not that sweat flies build houses, of course.

The problem with using biological controls like aphid-eating lacewings is that these aphids reproduce fast.

The Houston Chronicle didn't say, but my guess is that tweaking aphid-eaters so that they reproduce as fast as the aphids might create another sort of problem when the aphid supply ran out. Maybe before.

That reminded me of "There Was an Old Lady Who Swallowed a Fly," and that's yet another topic.

2. Serious News, Sensationalist Prose

"Human-animal hybrids, disasters in the making"
The Voice of Russia (February 4, 2014)

"Scientists worldwide are creating bizarre human-animal hybrids that could wreak havoc on society. In the past ten years alone, unforgettable advances in the field of genetic modifications have left researchers and on-lookers stunned.

"Nowadays, it is possible for a couple of university-age students to concoct...."
The article keeps going: 589 more words of emotion-drenched prose, including:
"... the entities being created are not at all illegal but by all means could pose a risk to society by and large. There is no telling what may happen if these life forms are allowed to mate...."

"...transferring cells from human embryos into the brains of mice. These very cells began to grow, and in time made the mice more intelligent...."

"...The consequences of creating such hybrids could pose a hazard to communities near and far...."
(The Voice of Russia)
I don't blame The Voice of Russia for the sensationalistic style. They probably have bills to pay, like everyone else, and need to sell advertising: or, if they have a print version, newsstand copies.

Folks get excited by news about the machinations of mad scientists and irresponsible college kids: particularly if the news includes a few solid facts. I found this article thanks to someone sharing it on Google Plus the next day: which in turn led to me writing this post.

Beware the Mutants: Movie Science

I enjoy movies like "Them!," "Godzilla," 1954 and 1998; and "Teenage Mutant Ninja Turtles:" but don't take their "science" seriously.

I am not overly concerned that mutant mice or other "entities" may take over the world. For that matter, I'd be astonished if a rabid squirrel-man breaks out of a campus lab and wreaks havoc on the terrified citizenry.

The risk of a giant mutant safflower ravaging Tokyo is (very) slightly more probable. Scientists grafted genes that humans use for producing insulin into safflower plants.

Although "Kusumbha! — Attack of the Demon Weed" might make a dandy movie title: no, I really do not believe that we need to fear mutant safflowers.

I do, however, realize that ethics matter. We need to think about new technology: not let either fear or fascination outvote reason.

3. The Pancreas of Pig 29


(From BBC News, used w/o permission.)
"Pig number 29 is a white pig, but has black hair"
"Quest to grow human organs inside pigs in Japan"
Rupert Wingfield-Hayes, BBC News (January 2, 2014)

"I am standing in a fully functioning operating theatre. A surgeon and team of specialists in green smocks are preparing to operate. But I'm not in a hospital. I am on a farm deep in the Japanese countryside. On the gurney about to undergo the knife is a six-month-old female pig.

"Standing over her, scalpel in hand, is Professor Nagashima. He carefully cuts open her abdomen and pulls out her uterus. To me, it looks more like intestines - but he assures me this is what a pig's uterus looks like. Then with a syringe and a catheter, he begins to inject 40 embryos into the uterus.

"The unconscious pig is about to become a surrogate mother - and the embryos she is now carrying are very special. They are chimeric, that is, they carry genetic material from two different species....

"...Halfway down the long white shed, I am introduced to pig number 29 - a large, hairy male with jutting tusks. Number 29 is a white pig, but he is covered in coarse, black hair. More importantly, inside, he has the pancreas of a black pig...."
The BBC article doesn't say, but I'm guessing that pig 29 is a Ukrainian White Steppe, Welsh pig, or other breed that's usually white. Then again, maybe not.

Genetic code for the black pig pancreas inside Number 29 might be a Beijing Black, or not. Again, the article doesn't say.

Although grafting genes for a specific organ from one pig to another is a remarkable achievement, I'm not sure that the 127 or so domestic pig breeds are different species.

Professor Nagashima's work probably doesn't violate ethics. Swapping parts between pigs is new, but grafting from one creature to another isn't.

The Clonus Horror Meets Dr. Moreau

The basic rules are simple: love God, love your neighbor; everybody's your neighbor. (Matthew 5:43-44, 22:36-40, Mark 12:28-31, Luke 10:25-30; Catechism of the Catholic Church, 1825)

Those rules haven't changed. But after two millennia of folks trying to weasel out of loving God and neighbor, discussions of how we apply the rules got complicated: detailed, anyway.

As I've said before, scientific research can help folks; but ethics still apply. (Catechism, 2292-2295)

Organ transplants, for example, are okay: but we're not allowed to kill one person to save another's life. And because human life is sacred, we shouldn't produce a 'test tube baby' to serve as spare parts for someone else. (Catechism, 2258, 2274-2275, 2296)

Oddly enough, a comparatively action-packed commercial product called "The Clonus Horror" (1979) dramatized serious ethical issues: partly from the viewpoint of an escaped clone.

The BBC article mentions "The Island of Doctor Moreau." It makes sense, in context.

H. G. Wells' 1896 novel centers around a scientist's creation of human-like beings from animals via vivisection: and discusses "moral responsibility, human identity, and human interference with nature." (Wikipedia)

One of the movie versions of H. G. Wells' tale may have offered profound philosophical insights. The 1977 version I saw, not so much. Good story, though:
Project Gutenberg has text of H. G. Wells' novel in HTML, EPUB, and other formats, by the way. (www.gutenberg.org/ebooks/159)

Pigs are Not People

I have found no indication that producing "artificial" organisms like dogs and macaroni wheat is evil. All that's changed recently is the technology we use for modifying creatures.

We're expected to use the animals, plants, and mineral resources of this creation: ethically, with kindness, taking future generations into account. But animals other than humans are not people. (Catechism, 2415-2418)

That's why I do not see a problem with swapping genes between pigs. So far, professor Nagashima's research seems to be ethical.

The ultimate goal of this research is isolating specific genes from a human being, grafting that code into an animal embryo, and eventually harvesting a custom-grown human organ.

A donor organ grown this way would be an exact match: because the organ would be grown using their own gene. Waiting until the host animal grew to maturity might be a practical issue.

So far, Nagashima's research sounds beneficial. Unhappily, there's a thorny ethical issue involved.

Safflowers, Insulin, and Ethics

Developing techniques for custom-grown donor organs is a good intention. But "I meant well" doesn't excuse an evil act. (Catechism, 1759)

It looks like inserting human genetic code in non-human creatures is wrong. Those safflowers that produce human insulin represent a violation of ethics.

That does not, as far as I can tell, mean that any "artificial" insulin is morally wrong. Mixing human and safflower genes: that's probably wrong. I'm assuming that a principle which applies to animal and human DNA extends to plants.

This is where it gets a bit technical.

Oocytes, Somatic Cells, and Human Dignity

"Instruction Dignitas Personae on Certain Bioethical Questions" (2008), 33., starts with: "Recently animal oocytes have been used for reprogramming the nuclei of human somatic cells...."

We generally don't hear "oocyte" and "somatic cell" in everyday conversation. An oocyte "is a female gametocyte or germ cell involved in reproduction...." (Wikipedia) A somatic cell is any cell that's not a gamete, germ cell, gametocyte or undifferentiated stem cell. (Wikipedia)

Most cells in our bodies are somatic cells.

I think a reasonable summary of "Dignitas Personae," 33., English translation, is that mixing human and animal DNA is "an offense against the dignity of human beings." I put a copy of that section at the end of this post.1

Bioethics and International Law: Work in Progress

As I've said before, right now we do not have an international authority with the necessary competence to act as a world government. (January 6, 2012; September 11, 2011)

Until and unless we build something like Tennyson's "Parliament of Man," we have to make do with outfits like UNESCO's International Bioethics Committee. (IBC)

I don't trust the United Nations and its committees any more than I trust America's Congress. But right now, organizations like that are what we must work with: and improve.

The IBC's Universal Declaration on Human Genome and Human Rights, International Declaration on Human Genetic Data, and Universal Declaration on Bioethics and Human Rights, apparently are more suggestions than laws.

Specific facets of bioethics, like cloning, are covered by a patchwork of national laws in more than a half-dozen countries, and by a non-binding United Nations Declaration on Human Cloning.

Once legislators and diplomats start thinking about cloning, most seem to think it's a bad idea. I'm inclined to agree.

We're far from seeing this nascent sense of ethics grow into the sort of awareness that's made traditions like genocide a comparative rarity.

But we're making progress in that direction. It's a start.

Related posts:
More:

1 Excerpt from "Instruction Dignitas Personae on Certain Bioethical Questions," Congregation for the Doctrine of the Faith (June 20, 2008)
"33. Recently animal oocytes have been used for reprogramming the nuclei of human somatic cells – this is generally called hybrid cloning – in order to extract embryonic stem cells from the resulting embryos without having to use human oocytes.

"From the ethical standpoint, such procedures represent an offense against the dignity of human beings on account of the admixture of human and animal genetic elements capable of disrupting the specific identity of man. The possible use of the stem cells, taken from these embryos, may also involve additional health risks, as yet unknown, due to the presence of animal genetic material in their cytoplasm. To consciously expose a human being to such risks is morally and ethically unacceptable."

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Marian Apparition: Champion, Wisconsin

Background:Posts in this blog: In the news:

What's That Doing in a Nice Catholic Blog?

From time to time, a service that I use will display links to - odd - services and retailers.

I block a few of the more obvious dubious advertisers.

For example: psychic anything, numerology, mediums, and related practices are on the no-no list for Catholics. It has to do with the Church's stand on divination. I try to block those ads.

Sometime regrettable advertisements get through, anyway.

Bottom line? What that service displays reflects the local culture's norms, - not Catholic teaching.