Tagged: dogfish shark

Squalamine begets Trodusquemine

Researchers at Cambridge University published a new report this week that extends on a very interesting line of Parkinson’s research. The studies focus on a compound (and derivatives of that compound) that has been derived from the dogfish shark.

The protein – called Squalamine – has an amazing ability to prevent the Parkinson’s-associated protein alpha synuclein from clustering (or aggregating) together. The aggregation of alpha synuclein is considered to be a key component of the biology underlying Parkinson’s, and thus any compound that block/reduce this aggregation is viewed with therapeutic applications in mind.

Unfortunately there is a problem with squalamine: it does not cross the blood brain barrier (the protective membrane surrounding the brain).

But a derivative of squalamine – called Trodusquemine – does!

In today’s post, we will look at what Squalamine and Trodusquemine are, we will review the new research, and look at current clinical research efforts involving these compounds.


The effects of aggregated Alpha Synuclein protein in a neuron. Source: R&D

We often talk about one particular protein on this website. It is called alpha synuclein. It is one of the most common proteins in the human brain, and it appears to be centrally involved with Parkinson’s.

In the Parkinsonian brain, alpha synuclein clumps (or aggregates) together, which is believed to lead to the appearance of Lewy bodies.

What are Lewy bodies?

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Objective measures: Getting smart about pills

There has been a lot of discussion on this site (and elsewhere on the web) regarding the need for more objective systems of measuring Parkinson’s – particularly in the setting of clinical trials.

Yes, subjective reports of patient experience are important, but they can easily be biased by ‘placebo responses’.

Thus, measures that are beyond the clinical trial participants conscious control – and focused on biological outcomes – are needed. 

In today’s post, we will consider one possible approach: Smart pills. We will discuss what they are, how they work, and how they could be applied to Parkinson’s research.


Source: Chicagotribune

In order to encourage a growing discussion regarding objective measures of Parkinson’s (and to follow up on previous rants – Click here and here for examples), I have decided to regularly (once a month) highlight new technologies that could provide the sort of unbiased methods of data collection that are required for assessing whether a treatment is having an impact on Parkinson’s.

Today, we will look at smart pills.

What is a smart pill?

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2017 – Year in Review: A good vintage

At the end of each year, it is a useful practise to review the triumphs (and failures) of the past 12 months. It is an exercise of putting everything into perspective. 

2017 has been an incredible year for Parkinson’s research.

And while I appreciate that statements like that will not bring much comfort to those living with the condition, it is still important to consider and appreciate what has been achieved over the last 12 months.

In this post, we will try to provide a summary of the Parkinson’s-related research that has taken place in 2017 (Be warned: this is a VERY long post!)


The number of research reports and clinical trial studies per year since 1817

As everyone in the Parkinson’s community is aware, in 2017 we were observing the 200th anniversary of the first description of the condition by James Parkinson (1817). But what a lot of people fail to appreciate is how little research was actually done on the condition during the first 180 years of that period.

The graphs above highlight the number of Parkinson’s-related research reports published (top graph) and the number of clinical study reports published (bottom graph) during each of the last 200 years (according to the online research search engine Pubmed – as determined by searching for the term “Parkinson’s“).

PLEASE NOTE, however, that of the approximately 97,000 “Parkinson’s“-related research reports published during the last 200 years, just under 74,000 of them have been published in the last 20 years.

That means that 3/4 of all the published research on Parkinson’s has been conducted in just the last 2 decades.

And a huge chunk of that (almost 10% – 7321 publications) has been done in 2017 only.

So what happened in 2017? Continue reading