9.14.2011

Synaptol ingredients


I have seen a new supplement advertised on the internet. It is called Synaptol. Maybe you've seen it. Here it is:


It is marketed to treat symptoms of ADD/ADHD. I wanted to know the mechanism of this product as it is not FDA regulated. So after some search I came across its ingredients. They are many and listed below:

Synaptol

Synaptol Ingredients: Official US Homeopathic Pharmacopoeia Aconitum Ferox, Adrenalinum, Apis Mellifica, Argentum Nitricum, Avena Sativa, Baptisia Tinctoria, Cochlearia Armoracia, Medorrhinum, Phosphorus, Scutellaria Laterifolia, Sumbulus Moschatus, Viola Odorata



It seems to be marketed as a Homeopathic remedy. Interested as I am in plant based pharmaceuticals, I have put together a quick review of the ingredients taken from referenced sources Wiki, Pubmed, and various chemical databases.


So here we go...




Aconitum Ferox (aka wolfsbane) - perennial that is indigenous to India (West Bengal). Very poisonous!



Well known in Ayurvedic medicine - poison bikh, or bish, contains a alkaloid in the roots called pseudaconitine or nepaline pictured here:


Mechanism of action: cholinesterase inhibitor - keep in mind this is the same mechanism of action of approved Alzheimer's treatments donepezil and galantamine




Adrenalinum

Somewhat alarming, but it appears as though this ingredient adrenalinum is what I thought, epinephrine. For sale online by several different homeopathic remedy listings, this ingredient is treatment for "muscle pains" and marketed as "extract of suprarenal bodies". It does not mention whose suprarenal bodies.




Apis mellifica

apis (latin for bee), melli- (latin for "sweet", think diabetes mellitus), gound up honeybee. Used as therapy for bee stings, rashes, even carpal tunnel. The active ingredient in this preparation has not been isolated. Bee venom (which is sometimes removed from these preparations), out of curiosity (and off topic), is also called apitoxin, and is a combination of:


Apamin (pictured left)- blocks CNS and smooth muscle Ca++ activated K+ channels, so called SK channels. These channels control afterpolarizations, inhibiting them makes the neuron more excitable because presumably you reduce the neurons post-firing hyperpolarization. What is interesting about this compound is its potential therapeutic uses, including ataxia, epilepsy, memory disorders. SK channels are found in the hippocampus too!












Adolapin (not pictured) - an 11kD (103 AA residue) polypeptide found to be a potent anti-inflammatory (inhbits cat spleen cyclo-oxygenase) and analgesic. Isolated in 1982 by Shkenderov and Koburova. PMID7080045


Phopholipases

Hyauronidases - dilates and chews through capillary glycocalyx so toxins can spread.

Histamine!

Dopamine/norepinephrine

Non-specific protease inhibitors



Argentum Nitricum (silver nitrate)


Uses: antiseptic/antibiotic (think newborn baby drops!), however this compound is an oxidant and therefore corrosive/toxic and can lead to silver deposition and staining.




Avena Sativa - the common cereal oat. Its extract has medicinal uses that are many however mechanisms are not worked out. a short list includes, food ingredient, brewery, soluble fiber, improvement of cholesterol profile, increased libido. Its benefits are marketed without pharmacologic mechanisms.






Baptisia tinctoria



perennial wildflower, aka yellow wild indigo. used commercially as a dye, however extracts are also marketed for health purposes; stimulating healing and digestion, also reported to have antiviral properties. Active ingredients listed in marketing materials are:


cytisine - an alkaloid, a nictonic acetylcholine agonist


anagyrine - another alkaloid, a nicotinic acetylcholine agonist (found to have teratogenic effects in cattle, PMID 20116429),



genistein - an isoflavone (i.e. anti-oxidant), found in plants, getting a lot of attention as anti-tumor agent (has topoisomerase inhibitory action, as well as estrogen receptor agonism - see pubmed review PMID 21844907





Cochlearia Armoracia



well known as the horseradish plant, i tried to find any compounds within this plant that would have nervous system activity, but I have found that it is mainly its oils which can be broken into thiocyanates which become irritants and possess antibiotic activity. it can be used for sinusitis, and is also listed as a diuretic to treat UTI, although I need to dig more to find a mechansim, many of the primary literature is in German, and sadly mein Übersetzer verfolgt nur eine Richtung auf einmal. Very hardy, famous plant.






Medorrhinum

In homeopathy, where this ingredient originates, there exists the concept of nosodes. Nosodes, much like vaccines, are very small portions of diseased material introduced to the body by practitioner's of homeopathy in order to provoke a response to the larger threat, the quote, "like cures like". According the Materia Medica of the Nosodes by Henry Clay Allen MD, medorrhinum are "potencies made from the gonorrheal virus". Gonorrhea is in fact a bacterium. I really cannot find any reliable source (albeit a cursory search), on the composition of this ingredient. Do you want to surf a strange wave on the internet? Google medorrhinum.




Scutellaria Laterifolia - an herb, aka Blue/Virginian/Mad-dog Skullcap



this plant has been receiving a lot of attention, wikipedia provides a concise referenced summary, but in short- almost 300 pharmacologically active compounds have been identified in this plant. Many of them flavonoids (plant pigments), terpenes (a type of basic hydrocarbon C5H8- upon which more complex lipids are synthesized), and phenols. Among the functions listed of these are anti-tumor, anti-inflammatory, anxiolytic (via benzodiazepine receptor binding site). Interesting, chrysin, pictured below, is a flavone (plant pigment) extract of this plant that was described to be an aromatase inhbitor in Science PMID: 6474163







Sumbulus Moschatus


seems to be homeopathic remedy, derived from a Eurasian plant Muskroot, another nosode, it is listed for many specific complaints which sound like neuropathy/nerve compression ("shooting tingling down arms") to possibly a-fib ("palpitations"), and according to Encyclopedia Britannica, believed to be similar to asafoetida, a dried root resin from the Ferula plant, an herb native to Iran and India. Either one of these plants are not well characterized. Sumbulus (muskroot) is definitely not well characterized.



and finally...



Viola Odorata


- well known as Sweet/English/Common/Garden Violet. Used in Ayurvedic medicine for sore throat/tonsilliits. Used primarily in perfumes and food colorings. The medicinal component of this plant may relate to anthocyanins (cyan- blue) a type of flavonoid which has been shown to have, anti tumor, anti inflammatory, anti oxidant acitivities. There are many papers published on the effects of anthocyanins, a complete review is not possible in this space. But to bring it back to Synaptol, this article PMID 20041802, out of Regenburg Germany, shows anthocyanins with affinity to cannabinoid receptors, moderate as the Ki for there top two anthocyanins (cyanidin and delphinidin) was between 16-23 uM (moderate) for the CB1.



Well, it seems that synaptol contains many active ingredients that in the right doses could amount to polypharmacy. There are known Ach esterase inhbitors, nAchR agonists, homogenized adrenals not otherwise specified, delayed Ca activated K+ channel inhibitors, "nosodes" (new term for me) of "the gonorrhea virus", possibly an aromatase inhibitor, GABA receptor agonists, potientially CB1 receptor agonists, possibly antibiotic compounds, and many many more still completely unknown, altogether in doses unknown. There is only one way to find out if this stuff works. I will sprinkle some into my friends morning coffee and observe him present on rounds. Just kidding, I am piqued enough to try some myself. I will report an anecdotal unbiased cognitive and physiological (vital signs) review of the effects Synaptol at some future point.


The problem with these products is that they have too many ingredients, it is impossible to sort out all of these different compounds and there many effects on all the body's systems. We'll see.

9.04.2011

more wisdom mcnuggets

fulfillment consists in activity. it is a running steam, not a stagnant pool.

-Oliver Wendell Holmes


A stout heart breaks bad luck

-Cervantes


Science without religion is lame, religion without science is blind.

-Einstein


The gem cannot be polished without friction, nor man without trials.

-Confucius


What you do not want done to yourself, do not do to others.

-Confucius


The young man knows the rules, the old man knows the exceptions.

-Holmes


If a man empties his purse into his head, no one can take it from him.

-Ben Franklin


He's the best physician that knows the worthlessness of most medicines.

-Ben Franklin


Imagination is more important than knowledge.

-Einstein


Three marks of superior man: Being virtuous, free from anxiety. Being wise, free from perplexity. Being brave, free from fear.

-Confucius


Every man takes the limits of his own field of vision for the limits of the world.

-Schopenhauer


Weakness on both sides is the motto of all quarrels.

-Voltaire


It is better to be deceived by one's friends than to deceive them.

-Goethe


I'm a little wounded, but I am not slain; I will lay down to bleed awhile. Then I'll rise and fight again.

-John Dryden


An excuse is worse than a lie, for an excuse is a lie guarded.

-Pope


An explanation of cause is not justification by reason.

-CS Lewis


The safest road to hell is the gradual one; gentle slope, soft underfoot, without sudden turning, without milestones or signpost.

-CS Lewis


What the mother sings to the cradle goes all the way down to the coffin.

-Henry Ward Beecher


A proverb is no proverb to you till life has illustrated it.

-Keats


It is easier to build strong children than to repair broken men.

-Frederick Douglass


The man who will use his skill and imagination to see how much he can give for a dollar instead of how little he can give for a dollar is bound to succeed.

-Ford


The bookful blockhead, ignorantly read, with loads of learned lumber in his head.

-Pope


As long as you can start, you are all right. The juice will come.

-Hemmingway


Looking at small advantages prevents great affairs from being accomplished.

-Confucius


Defining intelligence in order to improve it.

Nootropic (nous - mind, tropos -twist) drugs are meant to increase/enhance cognitive function, intelligence, creativity, motivation, attention etc... ie make you a better version of yourself. The most recent popular exposition of this classic Faustian bargain (pictured left) this very interesting and relevant topic was the film adaptation of Alan Glynn's novel the Dark Fields, Limitless. The bottom line is; if the risk/reward profile of such a drug were acceptable to your values, would you take it?

I would answer yes because, I already do in the form of caffeine, which has been shown to increase alertness and concentration, especially in sleep deprived states. However its unclear if caffeine ever gave me a comparative advantage, I would argue yes, but I couldn't prove it. Developing "smart pills" is more difficult than other medications because standardized methods for assessing its effects are not as predictive. Take for example blood pressure meds. The final common pathway for antihypertensive medications is measured by a blood pressure cuff. This is a workable metric, easy to monitor, and reasonably predictive (taking nothing away from the very interesting complex, and challenging concepts of cardiovascular physiology). On the other hand, there is no reliable way to measure "smartness", which confounds efforts to develop agents to improve this capacity. Therefore, I think its necessary to define what I'm after in a smart pill. Increased intelligence. What is that? Intelligence is a very hard concept to define, and there is no agreed upon definition to date. Also, I don't think there ever will be consensus. And I think that if ever a drug were developed that increased intelligence in radical meaningful ways, it would not have come about by focusing on more accurate definitions or "measurements" of intelligence. What tests that exist now are enough to capture what effect I'm after, and even if they were incapable of doing so, if the effect were bona fide, then it would not matter. Therefore, I have arranged a working definition of intelligence that is suitable for me, and so now I can start tackling specific topics related to it.


Intelligence - an emergence from a series of interacting collection of abilities used together to create awareness to and solutions for drives (whatever the origin- socio-, biological, spiritual, or cosmically otherwise)


the functions that matter-


abstract thought (abstract - ab meaning "from" , -stract -from latin trahere "to draw off") abstracting - separating or dissociating an idea, relationship, or presumably a truth from the object it inhabits.

for example use abstract reasoning to find one similarity between a gardener's hoe and a bow and arrow...

reasoning - the ability to order or arrange connections between what is thought or observed, (can be anything -concrete or abstract) into new or pre-existing abstract arrangements

learning - the ability to acquire abstractions, concepts, sensory/perceptual phenomena

memory - very closely related to learning, memory is the capacity to retain and recall learned information

explicit memory - fact recall, working memory, semantic memory, episodic memory, your mind's eye

implicit memory - motor tasks that are not conscious, procedural

emotional intelligence - identify, control, and apply the emotional states of self and others for a desired outcome



no actual agreed upon definition of intelligence. even more difficult to "measure" it, but certain agreed upon approaches are the best options available right now.


IQ (intelligence quotient) tests:

Stanford-Binet

Raven's Progressive Matrix

Wechsler Adult Intelligence Scale

Kaufman Assessment

...many many many more


Gardner's theory - multiple different intelligences. He subdivides intelligence into

logical - the mathematician

spatial - engineering/design

interpersonal - politician, clergy, teacher

linguistic - writer of course

musical - the list goes on...

kinesthetic - athletes, dancers, craftsmen


Triarchic theory

analytic intelligence

creative intelligence

practical intelligence


Then came the unifying theory.


The g factor-

Defined by Spearmen (psychologist) who analyzed the results of children's test scores and found unrelated areas of positive correlation in certain individuals. He dubbed this ability the "g factor" or general intelligence factor, it is the Holy Grail of intelligence. It is widely accepted.


Cattell-Horn-Carroll then subdivided g into 10 abilities -

fluid g - reasoning, concept formation, problem solving

crystal g - acquired knowledge and the ability to access it

quantitative g - comprehension and manipulation of numerical symbols

read/writing - the ability to read and write

short term memory- holding concepts in awareness

long term memory- efficient storage and retrieval of retained information

visual g - applying visual memory to aid in thinking

auditory g - applying auditory memory to aid in thinking

processing speed - maintaining attention in tasks under time pressure

reaction time- speed at which one reacts to stimuli


Not included among this, and something I think central to all intelligence is creativity - I would add creative g to this list, but figuring out how to measure this would take a lot more creative g! I think creative is what comes through in real life anyhow, thus testing doesn't matter if one possesses ample amounts of this. Already it is clear that there are several domains of function. But I find the central concept of g (general intelligence) appealing if for no other reason than its singularity. I wonder what it is and how to increase it, if it is increasable.

8.01.2011

multiple system atrophy vs parkinsons

multiple system atrophy - group of three overlapping neurodegenerative disorders

striatonigral degeneration - predominant parkinsonism

autonomic dysfunction (shy drager)

olivopontocereballar degeneration - predominant cerebellar ataxia



now categorized

MSA - P - predominant parkinson's - brady, rigid, post instability, tremor (can also get dystonia)

MSA - C - predominant cerebellar - nystagmus, dysarthria, impaired smooth pursuit,

dysphagia, increased urinary frequency, urgency, incomplete emptying

sleeping and breathing disorders (involuntary sighs/gasps)

cognitive function - typically spared

Raynaud's


Imaging - atrophy of putamen, pons, cerebellar peduncle (middle), "hot cross bun" sign -T2 hyperintense signal within pons (degeneration of transverse pontocerebellar fibers)


pathology - intracytoplasmic inclusions of alpha-synuclein, tau, ubiquitin


autonomic symptoms come from loss of neurons in the intermediolateral cell column or catechol C1 neurons of ventral lateral medulla


urinary symptoms can be result of loss of inhibitory pontine micturition neurons or Onuf's sacral nucleus (cause of erectile dysfunction in men)


KEY DIFFERENTIAL FOR MSA VS. IDIOPATHIC PARKINSON'S

response to L-dopa - MSA does not have sustained responses to L-dopa

MSA - C secondary to cerebellar, inf. olivary neucleus, basis pontins, pontine nuclei


Diagnosis is clinical. Levodopa dx MSA from idiopathic Parkinson's (above),

-must use HIGH dose to avoid false negative (lack of response)

-L-dopa can create false positive if trial doesn't last long enough (MSA can manifests after brief period of L-dopa responsiveness) trial period is 3 months

- use Ldopa w/carbidopa (peripheral decarboxylase inhbitor)

+ response is >30% increase in UPDRS score (unified parkinson disease rating scale

unilateral facial dystonias after L-dopa treatment suggest MSA over idiopathic parkinson




7.31.2011

mri notes

order MR if question about age of hemorrhage

(classically in child abuse cases)


hemorrhage on CT

white 2/2 Hgb/protein concentratino ~56 HU, anemic patient may appear isodense


hyper acute blood 0-72 hyperdense

Early subacute 3 days 1 week still hyperdense

Late subacute hypodense 1 week to months


MRI

2 factors affect MR: oxygenation state of hemoglobin, lysi of initially intact RBC


hyperacute 3-6hours - contains oxyhemoglobin (diamagnetic) - will not see it on GRE/SWI


acute 8-72 hrs - ^ deoxyhemoglobin (paramagnetic) will see on SWI/GRE


chronic hemorrhage - months to years, iron atoms deposited and cannot exit


hyper acute

oxy - isointense T1, bright on T2

acute 1-3 days

deoxy - iso on T1 dark on T2


subacute )3-7days)

bright on TI, dardk on T2

late 7-14 days bright bright - extracellular methemoglobin

chronic >14 days - dark dark T1T2


intracranial vasculature

digital subtractio angiography - gold standard, catheter angiography

do each vessel individually

bolus injection 100ml at 4-6ml/sec

large bore 18guage antecubital to get good cta


MRA/V

TOF - no contrast - moving spins experience different excitations (flow related), slow flow may appear as if vessel is occluded - can see >1.5mm on 1.5T

2D limitations - need adequate flow, aneurysms poorly visualized, underestimated because of slow moving spins

Phase contrast -

TRICKS - time resolved iagin of contrast kinetics: needs contast -time resolved imaging of contrast


giant aneurysm >2.5cm presents w/mass effect


http://www.youtube.com/watch?v=_OJ5qnErsTc&NR=1

7.15.2011

ipab

IPAB notes


the independent payment advisory board - us gov agency created in 2010 by ACA (affordable care act)


task

-reduce rate of growth in medicare to target levels w/o adversely impacting coverage/quality

priveleges

-IPAB has the ability to set medicare reimbursement rates independently, only congress has ability overrule IPAB decisions

thesis

-orginally MedPAC (medicare payment advisory commission) could advise congress on proper medicare spending but MedPAC could not legislate, however congress never made MedPAC's suggested cuts. it is believed congressional members were beholden to special interest groups from medical device/supply makers to keep spending high, IPAB was proposed as a way to remove power from congress with these financial conflicts of interest and put medicare spending policy decisions in the hands of healthcare policy experts


IPAB guidelines

-proposals must not involve "rationing" of care

-proposals must not raise medicare premiums

-proposals must not increase cost sharing (deductibles, copayments, coinsurance)

-proposals must not restrict benefits

-proposals must not alter eligibility criteria


who makes up IPAB

-15 members appointed by president, confirmed by senate

-composed of healthcare administrators, physicians, hospital managers, healthcare IT managers, consumer group representatives

-member salary 165,000

-total funding $15 million


notable organizations against IPAB

-pharmaceutical research and manufacturers of america -

-american hospital association

-american medical association - wants "working" physicians to be included as board members

-american academy of neurology - concerned reimbursements will be cut, believes there will not be physician representation on the IPAB board

-nursing home associations - IPAB would adversely impact their ability to lobby congress (this is as i understand it the whole purpose the board was created)


those for it

-medicare benficiaries stand to benefit, provided they can access care

-washington post editorial - reject criticism of IPAB essentially by saying that the current political system is failing greatly


numbers

-IPAB goal- decrease by $28 billion by 2019 - total medicare spending for this period will be 7 trillion!!, thus the savings will amount to 0.04% of total spending



my opinion is that this panel could probably be a benefit to healthcare reform and i support its formation. i understand opposition to IPAB probably stems from the loss of revenue and pre-existing political relationships between special interest lobbyists and congress. disrupting this channel of communication definitely adversely impacts these institutions' profit equilibrium and political position, and those who have spoken out against IPAB probably feel that their interests will be adversely impacted by IPAB proposals. but i happen to believe that congress would sell out the interests of physicians in order to maintain ties with private insurance and hospital lobbying groups who are more integral to their re-election, and because of the inherent instability that those relationships place on my standing as a future physician taken together with the good faith effort of our president and healthcare reform analysts comprising the IPAB (who may be more aligned with interests of office based/general practice physicians), i see more reason to support the formation of the IPAB then to maintain the status quo of medicare reimbursement defined in my eyes by annual emergency medicare reimbursement reduction stopgaps passed at the eleventh hour which continuously place the reimbursement system for physicians in precarious straits.

7.13.2011

chest radiology notes

pulmonary edema


cardiogenic

LV failure

valvular -

pulmonary veno-occlusive

12-19 pulmonary hypertension

20-25 interstitial edema (interlobular septa, bronchovascular bundle, subpleural compartment) - kerley lines (septal thickening), pleural effusion

>25 alveolar edema - (25mmhg is normal oncotic pressure of plasma)

batwing pattern, airbronchograms (ARDS), fluid leaks into the alveoli (50% begin in RUL because associated w/mitral regurg b/c r superior pulm vein right above mitral valve and it receives regurg jet _ this is the leading idea


non cardiogenic - high capillary perm - tends to be more permanent when onset (associated with high mortality) toxin

drug

trauma

sepsis


kerley A lines - long emanate from the hila, best seen in upper lobes

B lines short thick extend to pleural base

C lines fine very short, criss cross

no real difference between A B C, merely a historical note


rt pleural effusion predominates in CHF because patient sleeps rt side down! right usually larger than left

re-expansion pulmonary edema - re-exanpsion edema more sever w/chronic edema being drained,


some radiology notes

brain mra no contast

resolution is 3mm (CT angio is better than this)


petrous cavernouse supraclinoid -path of carotid


diffusion of water is restricted (restricted diffusion) in acute infarct (hi on dwi) cytotoxic edema, low on ADC,


dont have a use for contrast on T2 MR


T2 Flair good for fluid containing pathology


corpus callosal lesion

gbm

ms

lymphoma (likes periventricular white matter)




signs in chest radiology

butterfly pattern of cardiogenic pulmonary edema

air bronchogram - parencyhmal process (air blood pus cells tumor) - you can see bronchi,

bronchus cut off sign -atelectasis

veil sign - left lobe atelectsasis

golden s sign - right upper lobe atelectasis

comet tail and crow feet on CT - pleural fibrosis round atelectasis (need to have pleural disease)

juxtaphrenic peak sign - tenting of diaphragm upperwards in cases of upper lobe volume loss (atelectasis or surgical removal)



water bottle shaped heart - pericardial effusion (blood, fluid,etc)

oreo cookie sign - pericardial effusion on lateral radiograph, seen best with patient who has lot of fat

dense calcification in radiograph in center of heart aortic stenosis


reverse 3 sign - coarctation


continuous diaphragm sign - 3 things

- pneumomediastinum/pericardium/peritoneum


air crescent sign - invasive aspergillosis (necrotic consolidation) not an aspergilloma (classically)


deep sulcus sign - deep costophrenic angle in supine patient, classic sign of pneumothorax

scimitar sign - - sign of hypogenic lung syndrome lung will be bi-mono lobed (lung malformation) associated with abberant pulmonary venous return


hampton's hump - wedge shaped opacity sign of infarct from PE

westermark's sign - oligemia (shift in perusion) enlargement of ipsi pulmonary artery


fallen lung sign - ct sign of pneumothorax


halo sign - frquently see in bleeding met (angiosarc) and aspergillos

reverse halo - high density surround normal lung - classically described in COP (cryptogenic organizing pneumonia) - not pathognomonic though, resolves w/steroids


crazy aving - alveolar proteinosis