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- Newsgroups: bionet.neuroscience
- Path: sparky!uunet!spool.mu.edu!yale.edu!news.yale.edu!news
- From: YHADEISH@biomed.med.yale.edu (Yukiharu Hadeishi)
- Subject: Re: Schizophrenia and the immune system
- Message-ID: <1993Jan24.010801.1523@news.yale.edu>
- Sender: news@news.yale.edu (USENET News System)
- Nntp-Posting-Host: biomed.med.yale.edu
- Organization: Yale University
- Date: Sun, 24 Jan 1993 01:08:01 GMT
- X-News-Reader: VMS NEWS 1.20
- Lines: 48
-
- In a previous article, jxj24@po.CWRU.Edu (Jonathan Jacobs) says that:
- > In a previous article, mitchm@casbah.acns.nwu.edu (Mitchell Maltenfort) says:
- >>
- >> I was recently watching a PBS "Frontline" on schizophrenia, and was
- >>struck by an idea when it was mentioned that schizophrenics have certain
- >>white blood cell abnormalities. Is it possible that schizophrenia is an
- >>autoimmune disease?
- > ...
- >It is an interesting question alright. It certainly seems plausible
- >enough, and god knows that there are about a zillion ways your immune
- >system can turn on you when you least expect it. And there are about
- >a zillion more ways that your brain can unravel on you when you least
- >realize it.
-
- I couldn't agree more. In fact, there are probably many more ways than a
- merely a zillion for the immune system to go wrong--- but my understanding is
- that it cannot be a conventional, plain vanilla, lymphocyte-mediated autoimmune
- response, if schitzophrenia is an autoimmune-mediated disease. I may very well
- be wrong here, not being directly involved in research in this area, but my
- understanding is that there are no post-capillary venules feeding into the
- brain, and thus no way for immune cells to penetrate into brain tissue (don't
- ask me how microglia do it; maybe they truly are resident monocytes...). Since
- lymphocytes are unable to cross the blood-brain barrier, there is no way
- (within the current model, of course... ;-) ) for there to be an autoimmune
- reaction.
-
- The fact that the brain is an immune-privileged area makes sense, from a
- teleological perspective: since the fine connectivity of the brain is
- extremely important, and since most of your brain cells are no longer dividing
- for most of your life, one cannot afford to have bloody wars going on in there,
- pushing neurons this way and that, or worse, killing off neurons in the heat of
- phagocytosis--- it would be a real mess. We, meaning all life forms advanced
- enough to have brains, are better off suffering from the occasional slow brain
- virus than going through repeated inflammation responses and who knows what all
- causing irreparable damage in the effort to save the brain from minor mishap.
-
- Anyway, that's my understanding of the situation. Please correct me if I am
- wrong, all those who know more than I out there, I beg of you.
-
- -- yh.
-
-
- ------------------------------------------------------------------------------
- Yukiharu "Yuki" Hadeishi --- Lurker at Large
- Internet: yhadeish@biomed.med.yale.edu
- The Interdepartmental Neuroscience Program will have
- absolutely nothing to do with any of my opinions...
-
-