Psychiatric Disorders: Is this discovery a game-changing moment?

Why can we not do more to address psychiatric disorders? We have always regretted the lack of a robust model which links biological cause to behaviour (LSS 11 5 22;14 9 24 et al) Without this treatment can never achieve the same efficacy as it has for thousands of “physical” disorders such as infectious diseases, cancers or deficiency diseases.

Today It is our earnest hope that all this may be about to change. Read this Hidden links between psychiatric condition from Nature Briefing

DNA data from more than one million people suggests that the genetic risk factors linked to many psychiatric conditions fall into five clusters that cut across current diagnostic boundaries. For example, attention deficit hyperactivity disorder and autism, which are classified as separate conditions, both fall into the neurodevelopmental category. The findings hint that the fact that people tend to be diagnosed with multiple disorders at once is a reflection of shared underlying biology, and could help to create a more biologically based way of understanding psychiatric conditions.

Nature | 5 min read
Reference: Nature paper

If this work can be confirmed and extended, then it offers a tantalising possibility: this particular observable gene cluster is associated with this set of behaviours. And not another set of behaviours, which turn have their own identifiable gene cluster. Simple. Robust. Falsifiable. Empirical.  What’s more, the clusters seem to make a curious rule-of-thumb sense.  One for neurodevelopmental disorders such as ASD and ADHD. The second for internalising disorders such as anxiety, depression and so on. A third for compulsive ones like OCD and anorexia. A fourth for psychotic ones such as bipolar and schizophrenia   And a fifth for substance abuse disorders. Simply put , each cluster may have particular underlying neurological architecture. In which case the underlying mechanism may be discerned; and treatment found.

Now for the caveats. First of all, it’s early days and we need to see how the work holds up against existing diagnostic frameworks. Secondly, only a fool would rule out epigenetic and environmental contributions to psychiatric malfunction. As for the thought of any treatments based on the new findings-well, they have to be decades away if possible at all,.

And yet….to end on a personal note. Nothing is sadder, nothing so moves us as seeing yet another lost soul, another hopeless cry for help, in the face of a victim pf psychiatric disorder. And to know the terrible sufferings imposed upon themselves, their families, carers and the professionals who come up against them, which includes anyone from emergency service workers to housing professionals. And to know that nothing can be done, despite the whole of modern science and learning. But now, just maybe, we have a real game changer on our hands, There is something to pray for this Christmas.

#psychiatric disorders #mental health #medicine #neurology #health #society

Mental Illness: Real hope at last?

Why is there no “cause and effect” model of mental disorders and problems? it’s a problem that has intrigued us for more than fifty years; and has more than once been lamented on these pages. Despite the heroic endeavours of thousands of hard working researchers and scholars, we seem little nearer tangible, reproducible solutions.

Until this week when we came across an article by Anthea Rowan of the New Scientist which honestly made our hair stand up.[1] Initially the article is about OCD.(obsessive-compulsive disorder) But in it, for the first time, we have come across what may be real hints of what is going on at a neurological and molecular level in the unfortunate victims of many mental abnormalities. And from that emerges the first possibility of real and lasting cures for their suffering.

We won’t steal Andrea’s thunder (you’ll need a paywall jump if you use the link), But we will try to summarise some of her salient points, and urge you to read further.

It’s the genes Get this quote from her:

“…half of the risk of developing OCD is down to our genes..[a study]…examined genomes of nearly 40000 people with OCD and identified 15 genetic signatures associated with the conditio including ones for proteins that influence brain function and development ….one of the signatures…. was associated with genes for the major histocompatibility complex(MHC)[2] ….a region of DNA that plays an important role in the immune system and has also been linked to other mental health conditions such as schizophrenia and bipolar disorder “(our bold)

It’s in the immune system

“…….a case in point is two related conditions called PANS and PANDAs in which children can suddenly develop OCD symptoms anxiety or tics seemingly in response to an infection….”

It’s in the gut

“… a team at Shanghai Jiao Tong University….transplanted faecal gut microbiota from humans with OCD into mice. Two weeks later the mice began to exhibit repetitive behaviours and signs of anxiety..….

Why are we so excited? Because here at last are three tangible, well defined pathways for research. Each contains definable, repeatable units like molecules, tissues and nerve ganglia. No more hard to prove social theories or endlessly debated diagnoses. Instead a chance to start again from the bottom up. And maybe find a pattern of molecular-level abnormalities which can be identified, defined and remedied in a controlled and repeatable manner. The research will be long. Cures are still very far away. But the right paths have now been identified. And that is some cause for hope.

[1]https://www.newscientist.com/article/mg26335082-600-a-fresh-understanding-of-ocd-is-opening-routes-to-new-treatments/

[2]https://en.wikipedia.org/wiki/Major_histocompatibility_comple

#mental illness #OCD #personality disorder #MHC #infection #immunology #infection #health #medicine