- Introduction to Forskolin
- Where Does Forskolin Come From?
- Why Is cAMP So Important?
- Where to Buy Forskolin
- Health Benefits of Forskolin
- Forskolin Helps To Lose Weight
- Forskolin Can Be Used To Treat Diabetes
- Forskolin Influences Immune System
- Forskolin Kills Cancer Cells
- Forskolin Is Good For The Heart
- Forskolin Relaxes Muscles In Blood Vessels
- Forskolin Can Prevent Different Types Of Surgical Complications
- Forskolin Helps Breathing
- Forskolin Is Used For Skin Treatment
- Forskolin Influences Egg Cells And Sperm
- Forskolin Is Good For Nerve Cells
- Forskolin Is Used To Treat Glaucoma
- Forskolin Can Be Used For Treatment Of X-Adrenoleukodystrophy
- Forskolin Can Help With HIV Infection
- Forskolin Can Be Toxic And Can Interfere With Other Drugs
- There Are Novel Ways Of Forskolin Synthesis
- Amazon’s Bestsellers
Introduction to Forskolin
Forskolin is a popular supplement, therapeutic drug and research tool that entered medical practice from ayurvedic medicine [R1].
It is obtained from an Indian plant known as Plecthranthus barbatus or Coleus forskohli [R2].
Forskolin has many potentially useful properties:
- It stimulates cyclic AMP
- Lowers blood pressure
- Prevents blockage of blood vessels
- Promotes weight loss
- Relaxes muscles
- Influences hormone release
- Restores function of heart cells
- Lowers inflammation
- Kills different types of cancer cells
The following article will discuss potential uses and side effects of cyclic AMP, forskolin and forskolin derivatives.
Where Does Forskolin Come From?
As was mentioned earlier, forskolin is a plant-derived substance
Forskolin is obtained primarily from dried root [R5].
Analogues of forskolin have also been investigated:
Why Is cAMP So Important?
It activates several proteins, including protein kinase A, exchange protein activated by cAMP (Epac) and AMP-activated protein kinase (AMPKA) [R18]
Through these proteins cAMP determines the reaction of the cells to hormones and maintains energy balance [R19].
It was also reported to be involved in immune reactions [R20].
It is also because of cAMP that forskolin has such diverse effect on the organism and is a promising therapy for many diseases.
Where to Buy Forskolin
Health Benefits of Forskolin
Forskolin Helps To Lose Weight
It was also shown that forskolin taken together with rolipram induced fat destruction and prevented weight gain [R25].
The latter study has also shown that these effects were connected to the increase of cAMP levels [R25].
cAMP also influences fat storage R27].
Thus we can conclude that forskolin and forskolin-containing extract are scientifically proven to help fight obesity.
Forskolin Can Be Used To Treat Diabetes
Diabetic retinopathy is caused by high levels of sugar that damage small eye vessels and cause blood to leak into the eye and damage vision [R32].
Forskolin Influences Immune System
There are several articles showing the influence of forskolin on different parts of immune system.
It was recently found that forskolin helps killer immune cell development [R34].
It is known to destroy the relationship between proteins that carry information into the cell and activate the development of appropriate changes [R36].
It is also known that cAMP can reduce inflammation by suppressing RAGE protein, which initiates the development of inflammation [R37].
There is also a report showing that cAMP elevating drugs, including forskolin, are able to block production of potentially inflammatory protein GM-CSF [R38].
There is also evidence that forskolin induces immune cell production of a number of substances beneficial in treating chronic inflammation [R39].
It should be noted that while the immune cells produce some useful proteins, their activity is partly blocked by forskolin [R40].
The dual effect of forskolin may be explained by the fact that cAMP selectively drives the development of immune cells in favour of certain types, blocking other types of cells and reactions [R41]
Forskolin Kills Cancer Cells
Forskolin can influence cancer cells through a number of mechanisms and is now viewed as a promising assisting drug in cancer therapy.
First of all, forskolin activates protein phosphatase 2A (PP2A), that is blocked in some cancers especially leukemias – cancers of blood cells [R42].
PP2A is an important protein that activates many enzymes in the cell [R43].
Restoration of PP2A activity with forskolin blocks cancer cell development and induces cancer cell death [R43].
It can also enhance the effect of standart anti-cancer drugs such as Idarubicin and Ara-c [R43].
Activation of PP2A also causes cell death in cancer of the prostate [R44].
Forskolin also enhances the action of chemotherapy drugs 5-fluorouracil and oxaliplatin when treating colon cancer and causes cancer cell death due to the same mechanism [R45].
Forskolin is also know to block Hedgehog – a protein crucially important in early development, as it determines the fate of all the organs in the newly formed embryo [R45].
In a grown organism Hedgehog can help cancer cells move to other locations and form metastases [R46].
By inhibiting hedgehog forskolin prevents development of new cancer cells and tumour growth [R46].
It also prevents the invasion of cancer cells into other organs [R47].
It was also shown that by increasing the level of cAMP and activating PKA forskolin blocks a gene called gli1 besides Hedgehog [R48].
Research on brain cancer cell lines also shows that forskolin block editing of gene products thus preventing the development of new cancer cells from brain cells [R50].
This makes glucocorticoid cancer therapy more effective [R52].
Forskolin Is Good For The Heart
According to recent research, forskolin can be used to treat heart disease.
First of all, forskolin blocks movement of Ca2+ into muscle cells, thus preventing contraction of muscle cells in the heart and blood vessels [R53].
Muscle relaxation is very important in preventing heart attacks [R53].
It was also proposed that new forskolin derivative, NKH477, can reverse damage to the heart in rats with heart attack [R54].
NKH477 at present is viewed as a promising drug that can make the heart to work at a proper pace [R55]
It was also shown in experiments on heart cells that forskolin reverses some defects associated with a type of heart failure called mitral deficiency, which may improve outcomes after heart operations for this type of problem [R56].
Forskolin derivatives NKH77 and DMAPD increase the level of cAMP in heart cells better than forskolin itself and are more effective for heart therapy [R58].
Forskolin Relaxes Muscles In Blood Vessels
The same effect was observed a decade later for forskolin derivative, NKH477 [R61].
Coleus forskohli extract is shown to lower blood pressure in older patients due to forskolin ability to relax muscle cells in blood vessels [R62].
Forskolin Can Prevent Different Types Of Surgical Complications
Drugs used during surgery can cause problems with the heart, breathing and kidney. Using forskolin before operations can prevent such complications, as is shown below.
Pretreatment of sheep before surgery with forskolin prevents the blockage of blood vessels and relaxes vessel muscles, thus improving blood flow [R63].
Another forskolin derivative, colforsin daropate, prevents complications by improving blood flow when taken before undergoing surgery for blood vessel transplants [R64].
Also synthetic blood vessel grafts coated with forskolin are better accepted into patients organism as there is no immune cell attachment on their surface and they do not get rejected by the patient’s immune system [R65].
Forskolin Helps Breathing
Forskolin also relaxes muscles in the lung, helping breathing. Injection or inhalation of forskolin derivative NKH477 prevents the constriction of lungs during surgery and may be also used against asthma [R67].
It also lowers blood pressure during surgery, which may prevent bleeding [R68].
Colforsin daropate, a forskolin derivative, prevents tightening of the lungs in humans, which is useful for asthma attacks [R69].
As for beclomethasone, no significant differences were found [R71].
It should be noted, that cAMP alone actually can cause asthma attacks [R72].
Forskolin Is Used For Skin Treatment
Forskolin and C. forskohli extract is often used for skin treatments.
For example, it was shown that forskolin can induce migration of skin cells to the place of the wound helping its healing [R73].
Application of forskolin to skin cell culture repairs such damage and prevents skin cell death [R74]
It was shown in the lab setting that in animals that do not possess an active melanin gene, forskolin increases production of a protein similar to melanin-eumelanin, thus activating an alternative mechanism of protection [R76].
Comparison of skin treatment with forskolin and C.forskohli extract has shown that forskolin gets into the skin faster if it a part of the plant extract [R78].
Forskolin Influences Egg Cells And Sperm
Forskolin can also influence reproductive cells both in men and women.
In case of women, forskolin in combination with ciclostamide improved the development of human egg cells [R79].
Even without the presence of other drugs forskolin increases the rate of egg cell division and makes them more likely to be fertilized and develop into an embryo [R80].
In course of laboratory research on pig egg cells it was found that forskolin is able to control the development of pig oocytes and increases production of progesterone, a protein important for development of the embryo [R81].
Forskolin can also play a role in male reproduction. Forskolin in low doses can increase testosterone production by testes cells as well as production of cAMP, but in high doses it can block the same processes [R82, R83].
Also forskolin is able to increase the level of cAMP in appropriate part of the sperm cell and make the cell more likely to get inside the egg cell [R84]. ]
Forskolin Is Good For Nerve Cells
There is a number of research reports that show the influence of forskolin and P.barbatus/C.forskohli extract on nerve cells in different conditions.
This protein can be toxic for the organism, so P. barbatus tea is a potential antidote against this type of poisoning [R85].
It was also discovered in rats with brain injury that forskolin derivative NKH477 prevents complications in affected animals by elevating cAMP [R86].
cAMP is involved in many other processes of nerve cell development and protection. For example, cAMP can be used to protect nerve cells from toxic proteins in some diseases that involve nerve cells destruction by initiating ubiquitin protein production [R87].
cAMP is also important for the activity of pituitary gland, which is a part of the brain. Pituitary gland controls a wide array of processes, mainly those controlled by hormones [R88].
By increasing cAMP level, forskolin makes nerve cells of pituitary gland produce electrical impulses and regulatory chemical substances [R88].
cAMP can be also used in therapy after nerve injuries. For instance, combination of drugs promoting cell growth together with cAMP injections promote nerve cell growth and regeneration after injury [R90].
Forskolin can even reprogram cancer cells into the certain type of nerve cells called astrocytes [R91].
cAMP is so crucial in nerve development, that normal development of the eye retina depends on regulation of cAMP level inside the cell [R92].
Forskolin is also found to be influencing the activity of the nerve cells responsible for hearing in the brain [R93].
Forskolin can be also used indirectly for treating nerve disorders such as autism, epilepsy and schizophrenia, as it is used together with a protein Ascl1 to reprogram connective tissue cells into certain type of neurons [R95].
Forskolin Is Used To Treat Glaucoma
Forskolin and cAMP influence on the eye nerve cells is so profound that forskolin – containing substances are actively reviewed for treatment of glaucoma and other eye diseases.
Here it was already mentioned that forskolin can be used for treatment of diabetic retinopathy [R31].
cAMP is also known to be very important in the retina development [R92].
It is known that soluble adenylyl cyclase, an enzyme directly making cAMP, active in different parts of the eye and plays an important role in their function [R96].
Food supplements containing forskolin and other useful substances have improved the condition of patients with glaucoma [R97].
In case of injuries to the eye blood vessels, complex injections into the eye with forskolin, homotaurine, and L-carnosine prevents nerve cell death in the eye after elevating of the intraocular blood pressure [R99].
Forskolin Can Be Used For Treatment Of X-Adrenoleukodystrophy
x-ALD or x-adrenoleukodystrophy is a disease caused by faulty transformation of molecules called long chain fatty acids [R100].
cAMP helps lower the level of such acids and also blocks a number of cytokines driving the disease progress [R100].
Forskolin Can Help With HIV Infection
Unfortunately, there are no more reports that corroborate or refute this statement.
Forskolin Can Be Toxic And Can Interfere With Other Drugs
Here is the review of literature concerning this topic.
C. forskohli extract can potentially damage the liver [R105]. It was shown on laboratory animals that Coleus forskohli extract increases the level of a number of proteins in the liver which may result in damage to the organ [R105].
It should be noted that forskolin itself has negligible effect in the worsening of liver condition [R106].
It also should be said that the diet of the patient is of importance. C. forskohli extract was shown to be most toxic in cases where the animals were fed products with the high level of starch (is present in high quantities in grain and potatoes) [R107].
C. forskohli extract also interacts badly with tolbutamide that lowers the level of sugar in the blood [R108].
Besides activating potentially damaging proteins in the liver, C.forskohli also leads to the increase in the size of the liver and quantity of fat it contains .
Considering contradictory effects of forskolin described above, it is understandable that both the dietary plant extract and forskolin itself should be taken carefully.
There Are Novel Ways Of Forskolin Synthesis
One method uses genetically engineered yeast to make 11β-hydroxy-manoyl oxide, a similar copound which can be used to make forskolin [R111].
Another biosynthetic method introduces C. forskholi genetic material to E.coli in order to produce manoyl oxide, another forskolin precursor [R112].
The wide array of forskolin properties already known makes it a certainty more ways of forskolin applications are to be discovered in the nearest future: new, safer and more effective derivatives would be made and the laboratory successes would be used in real therapy, especially in case of cancer. But the very same reasons for forskolin research and success make the drug also dangerous when taken indiscriminately. Please consult your doctor even about taking forskolin containing extracts or dietary supplements.
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